form EMhub: a web platform for data management and on-the-fly processing in scientific facilities By journals.iucr.org Published On :: 2024-10-07 Most scientific facilities produce large amounts of heterogeneous data at a rapid pace. Managing users, instruments, reports and invoices presents additional challenges. To address these challenges, EMhub, a web platform designed to support the daily operations and record-keeping of a scientific facility, has been introduced. EMhub enables the easy management of user information, instruments, bookings and projects. The application was initially developed to meet the needs of a cryoEM facility, but its functionality and adaptability have proven to be broad enough to be extended to other data-generating centers. The expansion of EMHub is enabled by the modular nature of its core functionalities. The application allows external processes to be connected via a REST API, automating tasks such as folder creation, user and password generation, and the execution of real-time data-processing pipelines. EMhub has been used for several years at the Swedish National CryoEM Facility and has been installed in the CryoEM center at the Structural Biology Department at St. Jude Children's Research Hospital. A fully automated single-particle pipeline has been implemented for on-the-fly data processing and analysis. At St. Jude, the X-Ray Crystallography Center and the Single-Molecule Imaging Center have already expanded the platform to support their operational and data-management workflows. Full Article text
form Conformation–aggregation interplay in the simplest aliphatic ethers probed under high pressure By journals.iucr.org Published On :: 2024-01-01 The structures of the simplest symmetric primary ethers [(CnH2n+1)2O, n = 1–3] determined under high pressure revealed their conformational preferences and intermolecular interactions. In three new polymorphs of diethyl ether (C2H5)2O, high pressure promotes intermolecular CH⋯O contacts and enforces a conversion from the trans–trans conformer present in the α, β and γ phases to the trans–gauche conformer, which is higher in energy by 6.4 kJ mol−1, in the δ phase. Two new polymorphs of dimethyl ether (CH3)2O display analogous transformations of the CH⋯O bonds. The crystal structure of di-n-propyl ether (C3H7)2O, determined for the first time, is remarkably stable over the whole pressure range investigated from 1.70 up to 5.30 GPa. Full Article text
form Transferable Hirshfeld atom model for rapid evaluation of aspherical atomic form factors By journals.iucr.org Published On :: 2024-03-01 Form factors based on aspherical models of atomic electron density have brought great improvement in the accuracies of hydrogen atom parameters derived from X-ray crystal structure refinement. Today, two main groups of such models are available, the banks of transferable atomic densities parametrized using the Hansen–Coppens multipole model which allows for rapid evaluation of atomic form factors and Hirshfeld atom refinement (HAR)-related methods which are usually more accurate but also slower. In this work, a model that combines the ideas utilized in the two approaches is tested. It uses atomic electron densities based on Hirshfeld partitions of electron densities, which are precalculated and stored in a databank. This model was also applied during the refinement of the structures of five small molecules. A comparison of the resulting hydrogen atom parameters with those derived from neutron diffraction data indicates that they are more accurate than those obtained with the Hansen–Coppens based databank, and only slightly less accurate than those obtained with a version of HAR that neglects the crystal environment. The advantage of using HAR becomes more noticeable when the effects of the environment are included. To speed up calculations, atomic densities were represented by multipole expansion with spherical harmonics up to l = 7, which used numerical radial functions (a different approach to that applied in the Hansen–Coppens model). Calculations of atomic form factors for the small protein crambin (at 0.73 Å resolution) took only 68 s using 12 CPU cores. Full Article text
form Comprehensive encoding of conformational and compositional protein structural ensembles through the mmCIF data structure By journals.iucr.org Published On :: 2024-06-25 In the folded state, biomolecules exchange between multiple conformational states crucial for their function. However, most structural models derived from experiments and computational predictions only encode a single state. To represent biomolecules accurately, we must move towards modeling and predicting structural ensembles. Information about structural ensembles exists within experimental data from X-ray crystallography and cryo-electron microscopy. Although new tools are available to detect conformational and compositional heterogeneity within these ensembles, the legacy PDB data structure does not robustly encapsulate this complexity. We propose modifications to the macromolecular crystallographic information file (mmCIF) to improve the representation and interrelation of conformational and compositional heterogeneity. These modifications will enable the capture of macromolecular ensembles in a human and machine-interpretable way, potentially catalyzing breakthroughs for ensemble–function predictions, analogous to the achievements of AlphaFold with single-structure prediction. Full Article text
form The crystal structure of olanzapine form III By journals.iucr.org Published On :: 2024-07-29 The antipsychotic drug olanzapine is well known for its complex polymorphism. Although widely investigated, the crystal structure of one of its anhydrous polymorphs, form III, is still unknown. Its appearance, always in concomitance with forms II and I, and the impossibility of isolating it from that mixture, have prevented its structure determination so far. The scenario has changed with the emerging field of 3D electron diffraction (3D ED) and its great advantages in the characterization of polyphasic mixtures of nanosized crystals. In this study, we show how the application of 3D ED allows the ab initio structure determination and dynamical refinement of this elusive crystal structure that remained unknown for more than 20 years. Olanzapine form III is monoclinic and shows a similar but shifted packing with respect to form II. It is remarkably different from the lowest-energy structures predicted by the energy-minimization algorithms of crystal structure prediction. Full Article text
form Structure–property relationship of a complex photoluminescent arylacetylide-gold(I) compound. I: a pressure-induced phase transformation caught in the act By journals.iucr.org Published On :: 2024-08-23 A pressure-induced triclinic-to-monoclinic phase transition has been caught `in the act' over a wider series of high-pressure synchrotron diffraction experiments conducted on a large, photoluminescent organo-gold(I) compound. Here, we describe the mechanism of this single-crystal-to-single-crystal phase transition, the onset of which occurs at ∼0.6 GPa, and we report a high-quality structure of the new monoclinic phase, refined using aspherical atomic scattering factors. Our case illustrates how conducting a fast series of diffraction experiments, enabled by modern equipment at synchrotron facilities, can lead to overestimation of the actual pressure of a phase transition due to slow transformation kinetics. Full Article text
form From formulation to structure: 3D electron diffraction for the structure solution of a new indomethacin polymorph from an amorphous solid dispersion By journals.iucr.org Published On :: 2024-08-28 3D electron diffraction (3DED) is increasingly employed to determine molecular and crystal structures from micro-crystals. Indomethacin is a well known, marketed, small-molecule non-steroidal anti-inflammatory drug with eight known polymorphic forms, of which four structures have been elucidated to date. Using 3DED, we determined the structure of a new ninth polymorph, σ, found within an amorphous solid dispersion, a product formulation sometimes used for active pharmaceutical ingredients with poor aqueous solubility. Subsequently, we found that σ indomethacin can be produced from direct solvent evaporation using dichloromethane. These results demonstrate the relevance of 3DED within drug development to directly probe product formulations. Full Article text
form Unity gives strength: combining Bertaut's and Belov's concepts and the formalism of aperiodic crystals to solve magnetic structures of unprecedented complexity By journals.iucr.org Published On :: 2024-10-29 Full Article text
form Crystal structures of two formamidinium hexafluoridophosphate salts, one with batch-dependent disorder By journals.iucr.org Published On :: 2024-01-01 Syntheses of the acyclic amidinium salts, morpholinoformamidinium hexafluoridophosphate [OC4H8N—CH=NH2]PF6 or C5H11N2O+·PF6−, 1, and pyrrolidinoformamidinium hexafluoridophosphate [C4H8N—CH= NH2]PF6 or C5H11N2+·PF6−, 2, were carried out by heating either morpholine or pyrrolidine with triethyl orthoformate and ammonium hexafluoridophosphate. Crystals of 1 obtained directly from the reaction mixture contain one cation and one anion in the asymmetric unit. The structure involves cations linked in chains parallel to the b axis by N—H⋯O hydrogen bonds in space group Pbca, with glide-related chains pointing in opposite directions. Crystals of 1 obtained by recrystallization from ethanol, however, showed a similar unit cell and the same basic structure, but unexpectedly, there was positional disorder [occupancy ratio 0.639 (4):0.361 (4)] in one of the cation chains, which lowered the crystal symmetry to the non-centrosymmetric space group Pca21, with two cations and anions in the asymmetric unit. In the pyrrolidino compound, 2, cations and anions are ordered and are stacked separately, with zigzag N—H⋯F hydrogen-bonding between stacks, forming ribbons parallel to (101), extended along the b-axis direction. Slight differences in the delocalized C=N distances between the two cations may reflect the inductive effect of the oxygen atom in the morpholino compound. Full Article text
form Crystal structure and Hirshfeld surface analysis of (E)-2-[2-(2-amino-1-cyano-2-oxoethylidene)hydrazin-1-yl]benzoic acid N,N-dimethylformamide monosolvate By journals.iucr.org Published On :: 2024-01-05 In the title compound, C10H8N4O3·C3H7NO, the asymmetric unit contains two crystallographically independent molecules A and B, each of which has one DMF solvate molecule. Molecules A and B both feature intramolecular N—H⋯O hydrogen bonds, forming S(6) ring motifs and consolidating the molecular configuration. In the crystal, N—H⋯O and O—H⋯O hydrogen bonds connect molecules A and B, forming R22(8) ring motifs. Weak C—H⋯O interactions link the molecules, forming layers parallel to the (overline{2}12) plane. The DMF solvent molecules are also connected to the main molecules (A and B) by N—H⋯O hydrogen bonds. π–π stacking interactions [centroid-to-centroid distance = 3.8702 (17) Å] between the layers also increase the stability of the molecular structure in the third dimension. According to the Hirshfeld surface study, O⋯H/H⋯O interactions are the most significant contributors to the crystal packing (27.5% for molecule A and 25.1% for molecule B). Full Article text
form Crystal structure and Hirshfeld surface analysis of (Z)-N-{chloro[(4-ferrocenylphenyl)imino]methyl}-4-ferrocenylaniline N,N-dimethylformamide monosolvate By journals.iucr.org Published On :: 2024-02-02 The title molecule, [Fe2(C5H5)2(C23H17ClN2)]·C3H7NO, is twisted end to end and the central N/C/N unit is disordered. In the crystal, several C—H⋯π(ring) interactions lead to the formation of layers, which are connected by further C—H⋯π(ring) interactions. A Hirshfeld surface analysis of the crystal structure indicates that the most important contributions for the crystal packing are from H⋯H (60.2%) and H⋯C/C⋯H (27.0%) interactions. Hydrogen bonding, C—H⋯π(ring) interactions and van der Waals interactions dominate the crystal packing. Full Article text
form Crystal structure of 2,4-diamino-5-(4-hydroxy-3-methoxyphenyl)-8,8-dimethyl-6-oxo-6,7,8,9-tetrahydro-5H-chromeno[2,3-b]pyridine-3-carbonitrile–dimethylformamide–water (1/1/1) By journals.iucr.org Published On :: 2024-03-26 In the structure of the title compound, C22H22N4O4·C3H7NO·H2O, the entire tricyclic system is approximately planar except for the carbon atom bearing the two methyl groups; the methoxyphenyl ring is approximately perpendicular to the tricycle. All seven potential hydrogen-bond donors take part in classical hydrogen bonds. The main molecule and the DMF combine to form broad ribbons parallel to the a axis and roughly parallel to the ab plane; the water molecules connect the residues in the third dimension. Full Article text
form Dimeric ethyltin(IV)–dibromide–hydroxide–N,N-dimethylformamide By journals.iucr.org Published On :: 2024-04-26 Di-μ-hydroxido-bis[dibromido(dimethylformamide-κO)ethyltin(IV)], [Sn2Br4(C2H5)2(OH)2(C3H7NO)2], was prepared from ethyltin(IV) bromide and N,N-dimethylformamide (DMF) in air. The crystal structure exhibits the typical structural features of dimeric Lewis-base-stabilized monoorganotin(IV)–dihalide–hydroxides, RSnHal2(OH), i.e. two octahedrally coordinated Sn atoms are linked together via two bridging hydroxide groups, resulting in a centrosymmetric four-membered rhomboid-like Sn–OH ring with acute angles at the Sn atom, obtuse angles at the O atoms and two different tin–oxygen bond lengths. With the shorter bond trans to the ethyl group, this observation underlines once more the so-called trans-strengthening effect in monoorganotin(IV) compounds with octahedrally coordinated Sn atoms. Differences and similarities in the bond lengths and angles in the four-membered Sn–OH rings have been worked out for the rings in dimeric diorganotin(IV)–halide–hydroxides, [R2SnHal(OH)]2, and hydrates of dimeric tin(IV)–trihalide–hydroxide–aqua–hydrates, [SnHal3(OH)(H2O)]2·nH2O. Full Article text
form Structural characterization and comparative analysis of polymorphic forms of psilocin (4-hydroxy-N,N-dimethyltryptamine) By journals.iucr.org Published On :: 2024-05-14 The title compound, C12H16N2O, is a hydroxy-substituted monoamine alkaloid, and the primary metabolite of the naturally occurring psychedelic compound psilocybin. Crystalline forms of psilocin are known, but their characterization by single-crystal structure analysis is limited. Herein, two anhydrous polymorphic forms (I and II) of psilocin are described. The crystal structure of polymorphic Form I, in space group P21/c, was first reported in 1974. Along with the redetermination to modern standards and unambiguous location of the acidic H atom and variable-temperature single-crystal unit-cell determinations for Form I, the Form II polymorph of the title compound, which crystallizes in the monoclinic space group P21/n, is described for the first time. The psilocin molecules are present in both forms in their phenol–amine tautomeric forms (not resolved in the 1974 report). The molecules in Forms I and II, however, feature different conformations of their N,N-dimethyl ethylene substituent, with the N—C—C—C link in Form I being trans and in Form II being gauche, allowing the latter to bend back to the hydroxyl group of the same molecule, leading to the formation of a strong intramolecular O—H⋯N hydrogen bond between the hydroxyl moiety and ethylamino-nitrogen group. In the extended structure of Form II, the molecules form one-dimensional strands through N—H⋯O hydrogen bonds from the indole group to the oxygen atom of the hydroxyl moiety of an adjacent molecule. Form II exhibits whole-molecule disorder due to a pseudo-mirror operation, with an occupancy ratio of 0.689 (5):0.311 (5) for the two components. In contrast, Form I does not feature intramolecular hydrogen bonds but forms a layered structure through intermolecular N—H⋯O and O—H⋯N hydrogen bonds. Full Article text
form Crystal structures of seven gold(III) complexes of the form LAuX3 (L = substituted pyridine, X = Cl or Br) By journals.iucr.org Published On :: 2024-07-31 The structures of seven gold(III) halide derivatives of general formula LAuX3 (L = methylpyridines or dimethylpyridines, X = Cl or Br) are presented: trichlorido(2-methylpyridine)gold(III), [AuCl3(C6H7N)], 1 (as two polymorphs 1a and 1b); tribromido(2-methylpyridine)gold(III), [AuBr3(C6H7N)], 2; tribromido(3-methylpyridine)gold(III), [AuBr3(C6H7N)], 3; tribromido(2,4-dimethylpyridine)gold(III), [AuBr3(C7H9N)], 4; trichlorido(3,5-dimethylpyridine)gold(III), [AuCl3(C7H9N)], 5; tribromido(3,5-dimethylpyridine)gold(III), [AuBr3(C7H9N)], 6, and trichlorido(2,6-dimethylpyridine)gold(III), [AuCl3(C7H9N)], 7. Additionally, the structure of 8, the 1:1 adduct of 2 and 6, [AuBr3(C6H7N)]·[AuBr3(C7H9N)], is included. All the structures crystallize solvent-free, and all have Z' = 1 except for 5 and 7, which display crystallographic twofold rotation symmetry, and 4, which has Z' = 2. 1a and 2 are isotypic. The coordination geometry at the gold(III) atoms is, as expected, square-planar. Four of the crystals (1a, 1b, 2 and 8) were non-merohedral twins, and these structures were refined using the ‘HKLF 5’ method. The largest interplanar angles between the pyridine ring and the coordination plane are observed for those structures with a 2-methyl substituent of the pyridine ring. The Au—N bonds are consistently longer trans to Br (average 2.059 Å) than trans to Cl (average 2.036 Å). In the crystal packing, a frequent feature is the offset-stacked and approximately rectangular dimeric moiety (Au—X)2, with antiparallel Au—X bonds linked by Au⋯X contacts at the vacant positions axial to the coordination plane. The dimers are connected by further secondary interactions (Au⋯X or X⋯X contacts, `weak' C—H⋯X hydrogen bonds) to form chain, double chain (`ladder') or layer structures, and in several cases linked again in the third dimension. Only 1b and 7 contain no offset dimers; these structures instead involve C—H⋯Cl hydrogen bonds combined with Cl⋯Cl contacts (1b) or Cl⋯π contacts (7). The packing patterns of seven further complexes LAuX3 involving simple pyridines (taken from the Cambridge Structural Database) are compared with those of 1–8. Full Article text
form Puckering effects of 4-hydroxy-l-proline isomers on the conformation of ornithine-free Gramicidin S By journals.iucr.org Published On :: 2024-08-09 The cyclic peptide cyclo(Val-Leu-Leu-d-Phe-Pro)2 (peptide 1) was specifically designed for structural chemistry investigations, drawing inspiration from Gramicidin S (GS). Previous studies have shown that Pro residues within 1 adopt a down-puckering conformation of the pyrrolidine ring. By incorporating fluoride-Pro with 4-trans/cis-isomers into 1, an up-puckering conformation was successfully induced. In the current investigation, introducing hydroxyprolines with 4-trans/cis-isomer configurations (tHyp/cHyp) into 1 gave cyclo(Val-Leu-Leu-d-Phe-tHyp)2 methanol disolvate monohydrate, C62H94N10O12·2CH4O·H2O (4), and cyclo(Val-Leu-Leu-d-Phe-cHyp)2 monohydrate, C62H94N10O12·H2O (5), respectively. However, the puckering of 4 and 5 remained in the down conformation, regardless of the geometric position of the hydroxyl group. Although the backbone structure of 4 with trans-substitution was asymmetric, the asymmetric backbone of 5 with cis-substitution was unexpected. It is speculated that the anticipated influence of stress from the geometric positioning, which was expected to affect the puckering, may have been mitigated by interactions between the hydroxyl groups of hydroxyproline, the solvent molecules, and peptides. Full Article text
form Crystal structure and Hirshfeld surface analysis of dichlorido[2-(3-cyclopentyl-1,2,4-triazol-5-yl-κN4)pyridine-κN]palladium(II) dimethylformamide monosolvate By journals.iucr.org Published On :: 2024-08-16 This study presents the synthesis, characterization and Hirshfeld surface analysis of the title mononuclear complex, [PdCl2(C12H14N4)]·C3H7NO. The compound crystalizes in the P21/c space group of the monoclinic system. The asymmetric unit contains one neutral complex Pd(HLc-Pe)Cl2 [HLc-Pe is 2-(3-cyclopentyl-1,2,4-triazol-5-yl)pyridine] and one molecule of DMF as a solvate. The Pd atom has a square-planar coordination. In the crystal, molecules are linked by intermolecular N—H⋯O and C—H⋯N hydrogen bonds, forming layers parallel to the bc plane. A Hirshfeld surface analysis showed that the H⋯H contacts dominate the crystal packing with a contribution of 41.4%. The contribution of the N⋯H/H⋯N and H⋯O/O⋯H interactions is somewhat smaller, amounting to 12.4% and 5%, respectively. Full Article text
form Crystal structures of seven mixed-valence gold compounds of the form [(R1R2R3PE)2AuI]+[AuIIIX4]− (R = tert-butyl or isopropyl, E = S or Se, and X = Cl or Br) By journals.iucr.org Published On :: 2024-09-30 During our studies of the oxidation of gold(I) complexes of trialkylphosphane chalcogenides, general formula R1R2R3PEAuX, (R = tert-butyl or isopropyl, E = S or Se, X = Cl or Br) with PhICl2 or elemental bromine, we have isolated a set of seven mixed-valence by-products, the bis(trialkylphosphane chalcogenido)gold(I) tetrahalogenidoaurates(III) [(R1R2R3PE)2Au]+[AuX4]−. These correspond to the addition of one halogen atom per gold atom of the AuI precursor. Compound 1, bis(triisopropylphosphane sulfide)gold(I) tetrachloridoaurate(III), [Au(C9H21PS)2][AuCl4] or [(iPr3PS)2Au][AuCl4], crystallizes in space group P21/n with Z = 4; the gold(I) atoms of the two cations lie on twofold rotation axes, and the gold(III) atoms of the two anions lie on inversion centres. Compound 2, bis(tert-butyldiisopropylphosphane sulfide)gold(I) tetrachloridoaurate(III), [Au(C10H23PS)2][AuCl4] or [(tBuiPr2PS)2Au][AuCl4], crystallizes in space group P1 with Z = 4; the asymmetric unit contains two cations and two anions with no imposed symmetry. A least-squares fit of the two cations gave an r.m.s. deviation of 0.19 Å. Compound 3, bis(tri-tert-butylphosphane sulfide)gold(I) tetrachloridoaurate(III), [Au(C12H27PS)2][AuCl4] or [(tBu3PS)2Au][AuCl4], crystallizes in space group P1 with Z = 1; both gold atoms lie on inversion centres. Compound 4a, bis(tert-butyldiisopropylphosphane sulfide)gold(I) tetrabromidoaurate(III), [Au(C10H23PS)2][AuBr4] or [(tBuiPr2PS)2Au][AuBr4], crystallizes in space group P21/c with Z = 4; the cation lies on a general position, whereas the gold(III) atoms of the two anions lie on inversion centres. Compound 4b, bis(tert-butyldiisopropylphosphane selenide)gold(I) tetrabromidoaurate(III), [Au(C10H23PSe)2][AuBr4] or [(tBuiPr2PSe)2Au][AuBr4], is isotypic with 4a. Compound 5a, bis(tri-tert-butylphosphane sulfide)gold(I) tetrabromidoaurate(III), [Au(C12H27PS)2][AuBr4] or [(tBu3PS)2Au][AuBr4], is isotypic with compound 4a. Compound 5a, bis(tri-tert-butylphosphane sulfide)gold(I) tetrabromidoaurate(III), [Au(C12H27PS)2][AuBr4] or [(tBu3PS)2Au][AuBr4], crystallizes in space group P1 with Z = 1; both gold atoms lie on inversion centres. Compound 5b, bis(tri-tert-butylphosphane selenide)gold(I) tetrabromidoaurate(III), [Au(C12H27PSe)2][AuBr4] or [(tBu3PSe)2Au][AuBr4], is isotypic with 5a. All AuI atoms are linearly coordinated and all AuIII atoms exhibit a square-planar coordination environment. The ligands at the AuI atoms are antiperiplanar to each other across the S⋯S vectors. There are several short intramolecular H⋯Au and H⋯E contacts. Average bond lengths (Å) are: P—S = 2.0322, P—Se = 2.1933, S—Au = 2.2915, and Se—Au = 2.4037. The complex three-dimensional packing of 1 involves two short C—Hmethine⋯Cl contacts (and some slightly longer contacts). For 2, four C—Hmethine⋯Cl interactions combine to produce zigzag chains of residues parallel to the c axis. Additionally, an S⋯Cl contact is observed that might qualify as a ‘chalcogen bond’. The packing of 3 is three-dimensional, but can be broken down into two layer structures, each involving an S⋯Cl and an H⋯Cl contact. For the bromido derivatives 4a/b and 5a/b, loose associations of the anions form part of the packing patterns. For all four compounds, these combine with an E⋯Br contact to form layers parallel to the ab plane. Full Article text
form Form factor of helical structures and twisted fibres By journals.iucr.org Published On :: 2023-11-07 A general formalism is presented for the isotropically averaged single-chain scattering function (form factor) of single, double, triple and higher-order helices, as well as twisted fibres consisting of concentric layers of strands. Form factors for double and triple helices with differently sized grooves have also been derived. The formulas include the longitudinal and transverse interference over the pitch and radius of the helices, respectively. The results may be useful for the analysis of small-angle scattering data of (bio)macromolecules or molecular assemblies exhibiting a helical arrangement. Full Article text
form Refinement of X-ray and electron diffraction crystal structures using analytical Fourier transforms of Slater-type atomic wavefunctions in Olex2 By journals.iucr.org Published On :: 2024-02-01 An implementation of Slater-type spherical scattering factors for X-ray and electron diffraction for elements in the range Z = 1–103 is presented within the software Olex2. Both high- and low-angle Fourier behaviour of atomic electron density and electrostatic potential can thus be addressed, in contrast to the limited flexibility of the four Gaussian plus constant descriptions which are currently the most widely used method for calculating atomic scattering factors during refinement. The implementation presented here accommodates the increasing complexity of the electronic structure of heavier elements by using complete atomic wavefunctions without any interpolation between precalculated tables or intermediate fitting functions. Atomic wavefunctions for singly charged ions are implemented and made accessible, and these show drastic changes in electron diffraction scattering factors compared with the neutral atom. A comparison between the two different spherical models of neutral atoms is presented as an example for four different kinds of X-ray and two electron diffraction structures, and comparisons of refinement results using the existing diffraction data are discussed. A systematic but slight improvement in R values and residual densities can be observed when using the new scattering factors, and this is discussed relative to effects on the atomic displacement parameters and atomic positions, which are prominent near the heavier elements in a structure. Full Article text
form FLEXR GUI: a graphical user interface for multi-conformer modeling of proteins By journals.iucr.org Published On :: 2024-03-27 Proteins are well known `shapeshifters' which change conformation to function. In crystallography, multiple conformational states are often present within the crystal and the resulting electron-density map. Yet, explicitly incorporating alternative states into models to disentangle multi-conformer ensembles is challenging. We previously reported the tool FLEXR, which, within a few minutes, automatically separates conformational signal from noise and builds the corresponding, often missing, structural features into a multi-conformer model. To make the method widely accessible for routine multi-conformer building as part of the computational toolkit for macromolecular crystallography, we present a graphical user interface (GUI) for FLEXR, designed as a plugin for Coot 1. The GUI implementation seamlessly connects FLEXR models with the existing suite of validation and modeling tools available in Coot. We envision that FLEXR will aid crystallographers by increasing access to a multi-conformer modeling method that will ultimately lead to a better representation of protein conformational heterogeneity in the Protein Data Bank. In turn, deeper insights into the protein conformational landscape may inform biology or provide new opportunities for ligand design. The code is open source and freely available on GitHub at https://github.com/TheFischerLab/FLEXR-GUI. Full Article text
form Program VUE: analysing distributions of cryo-EM projections using uniform spherical grids By journals.iucr.org Published On :: 2024-05-10 Three-dimensional cryo electron microscopy reconstructions are obtained by extracting information from a large number of projections of the object. These projections correspond to different `views' or `orientations', i.e. directions in which these projections show the reconstructed object. Uneven distribution of these views and the presence of dominating preferred orientations may distort the reconstructed spatial images. This work describes the program VUE (views on uniform grids for cryo electron microscopy), designed to study such distributions. Its algorithms, based on uniform virtual grids on a sphere, allow an easy calculation and accurate quantitative analysis of the frequency distribution of the views. The key computational element is the Lambert azimuthal equal-area projection of a spherical uniform grid onto a disc. This projection keeps the surface area constant and represents the frequency distribution with no visual bias. Since it has multiple tunable parameters, the program is easily adaptable to individual needs, and to the features of a particular project or of the figure to be produced. It can help identify problems related to an uneven distribution of views. Optionally, it can modify the list of projections, distributing the views more uniformly. The program can also be used as a teaching tool. Full Article text
form Formulation of perfect-crystal diffraction from Takagi–Taupin equations: numerical implementation in the crystalpy library By journals.iucr.org Published On :: 2024-10-29 The Takagi–Taupin equations are solved in their simplest form (zero deformation) to obtain the Bragg-diffracted and transmitted complex amplitudes. The case of plane-parallel crystal plates is discussed using a matrix model. The equations are implemented in an open-source Python library crystalpy adapted for numerical applications such as crystal reflectivity calculations and ray tracing. Full Article text
form A study of structural effects on the focusing and imaging performance of hard X-rays with 20–30 nm zone plates By journals.iucr.org Published On :: 2024-10-28 Hard X-ray microscopes with 20–30 nm spatial resolution ranges are an advanced tool for the inspection of materials at the nanoscale. However, the limited efficiency of the focusing optics, for example, a Fresnel zone plate (ZP) lens, can significantly reduce the power of a nanoprobe. Despite several reports on ZP lenses that focus hard X-rays with 20 nm resolution – mainly constructed by zone-doubling techniques – a systematic investigation into the limiting factors has not been reported. We report the structural effects on the focusing and imaging efficiency of 20–30 nm-resolution ZPs, employing a modified beam-propagation method. The zone width and the duty cycle (zone width/ring pitch) were optimized to achieve maximum efficiency, and a comparative analysis of the zone materials was conducted. The optimized zone structures were used in the fabrication of Pt-hydrogen silsesquioxane (HSQ) ZPs. The highest focusing efficiency of the Pt-HSQ-ZP with a resolution of 30 nm was 10% at 7 keV and >5% in the range 6–10 keV, whereas the highest efficiency of the Pt-HSQ-ZP with a resolution of 20 nm was realized at 7 keV with an efficiency of 7.6%. Optical characterization conducted at X-ray beamlines demonstrated significant enhancement of the focusing and imaging efficiency in a broader range of hard X-rays from 5 keV to 10 keV, demonstrating the potential application in hard X-ray focusing and imaging. Full Article text
form Tide expands platform with acquisition of UK payroll solution Onfolk By thepaypers.com Published On :: Tue, 22 Oct 2024 13:15:00 +0100 Tide, a UK-based business... Full Article
form Fintech for Marketplaces and Platforms Report 2024 By thepaypers.com Published On :: Tue, 28 May 2024 07:24:00 +0100 The 1st edition of the Fintech for Marketplaces and Platforms Report covers essential ecommerce trends and future perspectives. Full Article
form Co. Completes Earn-In to Form JV at Advanced Stage Uranium Project in Athabasca Basin By www.streetwisereports.com Published On :: Thu, 24 Oct 2024 00:00:00 PST Source: Streetwise Reports 10/24/2024 Skyharbour Resources Ltd. (SYH:TSX.V; SYHBF:OTCQX; SC1P:FSE) has completed its earn-in requirements for a 51% interest at the Russell Lake Uranium Project in the central core of Canada's Eastern Athabasca Basin in Saskatchewan. This comes as the need for more net-zero power is sparking a rebirth of the nuclear industry.Skyharbour Resources Ltd. (SYH:TSX.V; SYHBF:OTCQX; SC1P:FSE) announced that it has completed its earn-in requirements for a 51% interest at its co-flagship Russell Lake Uranium Project in the central core of Canada's Eastern Athabasca Basin in Saskatchewan. The company and Rio Tinto have formed a joint venture (JV) to further explore the property, with Skyharbour holding 51% ownership interest and Rio Tinto holding 49%. This summer, Skyharbour announced that in the first phase of drilling it had found what was historically the best uranium intercept mineralization at the project when hole RSL24-02 at the recently identified Fork Target returned a 2.5-meter-wide intercept of 0.721% U3O8 at a relatively shallow depth of 338.1 meters, including 2.99% U3O8 over 0.5 meters at 339.6 meters. The second phase of drilling included three holes totaling 1,649 meters, with emphasis "at the MZE (M-Zone Extension) target, approximately 10 km northeast of the Fork target, identified prospective faulted graphitic gneiss accompanied by anomalous sandstone and basement geochemistry," Skyharbour said. "The discovery of multi-percent, high-grade, sandstone-hosted uranium mineralization at a new target is a major breakthrough in the discovery process at Russell — something that hasn't been seen before at the project with the potential to quickly grow with more drilling," President and Chief Executive Officer Jordan Trimble said at the time. ANT Survey, Upcoming Drilling Program The company also announced on Thursday that it had completed an Ambient Noise Tomography (ANT) survey in preparation for further drilling at the Russell Lake Project, set to commence in the fall. The survey used Fleet Space Technologies' Exosphere technology to acquire 3D passive seismic velocity data over the highly prospective Grayling and Fork target areas, where previous drilling has intersected high-grade uranium mineralization. "The ANT technology has been successfully employed in mapping significant sandstone and basement structures and associated alteration zones related to hydrothermal fluids pathways in the Athabasca Basin," the company said. Results from the survey will be used to further refine drill targets for the upcoming drilling program. Skyharbour is fully funded and permitted for the follow-up fall drill campaign consisting of approximately 7,000 metres of drilling at its main Russell and Moore Projects, with 2,500 meters of drilling at Moore and 4,500 meters of drilling at Russell. A Great Neighborhood Russell Lake is a large, advanced-stage uranium exploration property totaling 73,294 hectares strategically located between Cameco's Key Lake and McArthur River projects and Denison's Wheeler River Project to the west, and Skyharbour's Moore project to the east. "Skyharbour's acquisition of a majority interest in Russell Lake creates a large, nearly contiguous block of highly prospective uranium claims totaling 108,999 hectares between the Russell Lake and the Moore uranium projects," the company said. Most of the historical exploration at Russell Lake was conducted before 2010, prior to the discovery of several major deposits in/around the Athabasca Basin, Skyharbour said. Notable exploration targets on the property include the Grayling Zone, the M-Zone Extension target, the Little Man Lake target, the Christie Lake target, the Fox Lake Trail target and the newly identified Fork Zone target. "More than 35 kilometers of largely untested prospective conductors in areas of low magnetic intensity also exist on the property," the company noted. In an updated research note in July, Analyst Sid Rajeev of Fundamental Research Corp. wrote that Skyharbour "owns one of the largest portfolios among uranium juniors in the Athabasca Basin." "Given the highly vulnerable uranium supply chain, we anticipate continued consolidation within the sector," wrote Rajeev, who rated the stock a Buy with a fair value estimate of CA$1.21 per share. "Additionally, the rapidly growing demand for energy from the AI (artificial intelligence) industry is likely to accelerate the adoption of nuclear power, which should, in turn, spotlight uranium juniors in the coming months." The Catalyst: Uranium is 'BACK!' The growth of AI, new data centers, electric vehicle (EV) adoption, and the need for more net-zero power means more nuclear energy and the uranium needed to fuel it. Uranium prices are expected to move higher by the end of this quarter, when Trading Economics' global macro models and analyses forecast uranium to trade at US$84.15 per pound, Nuclear Newswire reported on Oct. 3. In another year, the site estimates that the metal will trade at US$91.80 per pound. Just last month, Microsoft Corp. (MSFT:NASDAQ) announced a deal with Constellation Energy Group (CEG:NYSE) to restart and buy all of the power from one of the shut-down reactors at its infamous Three Mile Island plant in Pennsylvania and the Biden administration also announced a plan to restart the Palisades plant in Michigan. Chris Temple, publisher of The National Investor, recently noted that with the Three Mile Island deal, "uranium/nuclear power is BACK!"[OWNERSHIP_CHART-6026] "I've watched as the news has continued to point to uranium being in the early innings of this new bull market," Temple wrote. "Yet the markets have been yawning . . . until now." Ownership and Share Structure Management, insiders, and close business associates own approximately 5% of Skyharbour. According to Reuters, President and CEO Trimble owns 1.6%, and Director David Cates owns 0.70%. Institutional, corporate, and strategic investors own approximately 55% of the company. Denison Mines owns 6.3%, Rio Tinto owns 2.0%, Extract Advisors LLC owns 9%, Alps Advisors Inc. owns 9.91%, Mirae Asset Global Investments (U.S.A) L.L.C. owns 6.29%, Sprott Asset Management L.P. owns 1.5%, and Incrementum AG owns 1.18%, Reuters reported. There are 182.53 million shares outstanding with 178 million free float traded shares, while the company has a market cap of CA$88.53 million and trades in a 52-week range of CA$0.31 and CA$0.64. Sign up for our FREE newsletter at: www.streetwisereports.com/get-newsImportant Disclosures: Skyharbour Resources Ltd. is a billboard sponsor of Streetwise Reports and pays SWR a monthly sponsorship fee between US$4,000 and US$5,000. Steve Sobek wrote this article for Streetwise Reports LLC and provides services to Streetwise Reports as an employee. This article does not constitute investment advice and is not a solicitation for any investment. Streetwise Reports does not render general or specific investment advice and the information on Streetwise Reports should not be considered a recommendation to buy or sell any security. Each reader is encouraged to consult with his or her personal financial adviser and perform their own comprehensive investment research. By opening this page, each reader accepts and agrees to Streetwise Reports' terms of use and full legal disclaimer. Streetwise Reports does not endorse or recommend the business, products, services or securities of any company. For additional disclosures, please click here. ( Companies Mentioned: SYH:TSX.V; SYHBF:OTCQX; SC1P:FSE, ) Full Article
form Network International, Ant International to transform digital payments By thepaypers.com Published On :: Tue, 29 Oct 2024 10:08:00 +0100 Network... Full Article
form Boxo and Nium launch white-label remittance platform for apps By thepaypers.com Published On :: Fri, 08 Nov 2024 08:18:00 +0100 Boxo has partnered with global payments infrastructure firm Full Article
form Marine Mineral Formations in the Arctic Ocean Challenge Existing Geologic Theories By www.usgs.gov Published On :: Tue, 12 Nov 2024 14:02:54 EST A new study from USGS describes a previously unknown process of marine mineral formation in the Arctic Ocean, driven by frictional heating along tectonic faults rather than by hydrothermal activity. Full Article
form Lawmakers Reach A Bipartisan Agreement On Police Reform By www.scpr.org Published On :: Thu, 24 Jun 2021 18:20:09 -0700 Alana Wise | NPR Updated June 24, 2021 at 8:46 PM ET Lawmakers in Washington, D.C., have reached a preliminary, bipartisan agreement on police reform after months of closely watched debate on the topic. Sens. Tim Scott, R-S.C., and Cory Booker, D-N.J., and Rep. Karen Bass, D-Calif., announced the agreement on Thursday evening. "After months of working in good faith, we have reached an agreement on a framework addressing the major issues for bipartisan police reform," the lawmakers said in a joint statement. "There is still more work to be done on the final bill, and nothing is agreed to until everything is agreed to. Over the next few weeks we look forward to continuing our work toward getting a finalized proposal across the finish line." The exact details of the plan were not immediately clear. The issue of reforming qualified immunity, to make it easier to sue police officers over allegations of brutality, had been a sticking point in negotiations. The police use of chokeholds was another debated provision. The effort to reform U.S. policing comes after several years of increasing pressure to better understand and regulate the way officers interact with the communities they patrol. The high-profile deaths of several Black people — many unarmed — at the hands of police — who have in some notable instances been white — have been the catalyst for the police reform movement. The Democratic-led House had approved the George Floyd Justice in Policing Act — named after one of those Black people killed by police — in early March, and President Biden had hoped Congress would pass the reform effort by the first anniversary of Floyd's death in late May. But Bass had said then that getting "a substantive piece of legislation" is "far more important than a specific date." Floyd's murderer, former Minneapolis police officer Derek Chauvin, is set to be sentenced to prison on Friday. White House press secretary Jen Psaki said in a statement Thursday that Biden "is grateful to Rep. Bass, Sen. Booker, and Sen. Scott for all of their hard work on police reform, and he looks forward to collaborating with them on the path ahead." The topic of police reform has divided the nation across party lines, with progressives accusing the right of seeking to maintain an antiquated and all-too-powerful law enforcement apparatus. Conservatives say the left has blamed the actions of some officers on the institution itself, turning the topic of police support and "blue lives" into more ammunition for the ongoing culture war. Copyright 2021 NPR. To see more, visit https://www.npr.org. This content is from Southern California Public Radio. View the original story at SCPR.org. Full Article
form Mike Gravel, Former Alaska Senator And Anti-War Advocate, Dies At Age 91 By www.scpr.org Published On :: Sun, 27 Jun 2021 09:20:07 -0700 Former Alaska Sen. Mike Gravel, who read the Pentagon Papers into the Congressional Record and confronted Barack Obama about nuclear weapons during a later presidential run, has died. He was 91.; Credit: Charles Dharapak/AP The Associated Press | NPRSEASIDE, Calif. — Mike Gravel, a former U.S. senator from Alaska who read the Pentagon Papers into the Congressional Record and confronted Barack Obama about nuclear weapons during a later presidential run, has died. He was 91. Gravel, who represented Alaska as a Democrat in the Senate from 1969 to 1981, died Saturday, according to his daughter, Lynne Mosier. Gravel had been living in Seaside, California, and was in failing health, said Theodore W. Johnson, a former aide. Gravel's two terms came during tumultuous years for Alaska when construction of the trans-Alaska oil pipeline was authorized and when Congress was deciding how to settle Alaska Native land claims and whether to classify enormous amounts of federal land as parks, preserves and monuments. He had the unenviable position of being an Alaska Democrat when some residents were burning President Jimmy Carter in effigy for his measures to place large sections of public lands in the state under protection from development. Gravel feuded with Alaska's other senator, Republican Ted Stevens, on the land matter, preferring to fight Carter's actions and rejecting Stevens' advocacy for a compromise. In the end, Congress passed the Alaska National Interest Lands Conservation Act of 1980, a compromise that set aside millions of acres for national parks, wildlife refuges and other protected areas. It was one of the last bills Carter signed before leaving office. Gravel's Senate tenure also was notable for his anti-war activity. In 1971, he led a one-man filibuster to protest the Vietnam-era draft and he read into the Congressional Record 4,100 pages of the 7,000-page leaked document known as the Pentagon Papers, the Defense Department's history of the country's early involvement in Vietnam. Gravel reentered national politics decades after his time in the Senate to twice run for president. Gravel, then 75, and his wife, Whitney, took public transportation in 2006 to announce he was running for president as a Democrat in the 2008 election ultimately won by Obama. He launched his quest for the 2008 Democratic presidential nomination as a critic of the Iraq war. "I believe America is doing harm every day our troops remain in Iraq — harm to ourselves and to the prospects for peace in the world," Gravel said in 2006. He hitched his campaign to an effort that would give all policy decisions to the people through a direct vote, including health care reform and declarations of war. Gravel garnered attention for his fiery comments at Democratic forums. In one 2007 debate, the issue of the possibility of using nuclear weapons against Iran came up, and Gravel confronted then-Sen. Obama. "Tell me, Barack, who do you want to nuke?" Gravel said. Obama replied: "I'm not planning to nuke anybody right now, Mike." Gravel then ran as a Libertarian candidate after he was excluded from later Democratic debates. In an email to supporters, he said the Democratic Party "no longer represents my vision for our great country." "It is a party that continues to sustain war, the military-industrial complex and imperialism — all of which I find anathema to my views," he said. He failed to get the Libertarian nomination. Gravel briefly ran for the Democratic nomination for president in 2020. He again criticized American wars and vowed to slash military spending. His last campaign was notable in that both his campaign manager and chief of staff were just 18 at the time of his short-lived candidacy. "There was never any ... plan that he would do anything more than participate in the debates. He didn't plan to campaign, but he wanted to get his ideas before a larger audience," Johnson said. Gravel failed to qualify for the debates. He endorsed Vermont Sen. Bernie Sanders in the contest eventually won by now-President Joe Biden. Gravel was born Maurice Robert Gravel in Springfield, Massachusetts, on May 13, 1930. In Alaska, he served as a state representative, including a stint as House speaker, in the mid-1960s. He won his first Senate term after defeating incumbent Sen. Ernest Gruening, a former territorial governor, in the 1968 Democratic primary. Gravel served two terms until he was defeated in the 1980 Democratic primary by Gruening's grandson, Clark Gruening, who lost the election to Republican Frank Murkowski. Copyright 2021 NPR. To see more, visit https://www.npr.org. This content is from Southern California Public Radio. View the original story at SCPR.org. Full Article
form Medical Co. Ready for a Transformative F2025 By www.streetwisereports.com Published On :: Tue, 05 Nov 2024 00:00:00 PST Source: Dr. Douglas Loe 11/05/2024 The Leede Financial Inc. analyst also noted that while F2024 is a transition year for Profound Medical Corp. (PROF:NASDAQ; PRN:TSX), F2025 is expected to be transformative for U.S. TULSA-PRO adoption. rates.Leede Financial Inc. analyst Dr. Douglas Loe, in a research report published on November 4, 2024, maintained a Buy rating on Profound Medical Corp. (PROF:NASDAQ; PRN:TSX) with a price target of US$18.00. The report follows Profound's announcement that its TULSA-PRO device will receive a Category One CPT code from the U.S. Centers for Medicare & Medicaid Services (CMS). Loe highlighted the significance of the reimbursement update, stating, "We have long viewed device-specific U.S. reimbursement codes for TULSA-PRO to be integral to its broader adoption in urology/oncology markets, and today's update thus solidifies TULSA-PRO's status on that theme." The analyst emphasized the favorable reimbursement rates, noting, "Hospitals/ASCs will be reimbursed at the Medicare average of US$12,992/US$10,728 per procedure. This is sufficient economic incentive in our view to drive TULSA-PRO installed base and procedure volume growth in F2025 and thereafter." Regarding growth projections, Loe stated, "Our model assumes that consolidated revenue/EBITDA/EPS in F2025 of US$34.9M/(US$3.9M)/(US$0.20/shr), but then lifting substantially on all metrics to US$59.1M/US$14.7M/US$0.10/shr in F2026 and then to US$95.5M/US$38.1M/US$1.05/shr in F2027." The report highlighted potential strategic interest, with Loe noting, "We expect urology-focused suitors to show tangible interest in Profound as the annual top-line performance approaches US$100M on a run-rate basis, which our model projects by FH227." Leede Financial's valuation methodology combines multiple approaches. Loe explained, "Our valuation still based on NPV (20% discount rate) and multiples of our F2027 EBITDA/fd EPS forecasts (US$38.1M & US$1.05/shr, respectively), with our EV calculation incorporating FQ224 balance sheet data (cash of US$34.1M, total debt of US$6.0M) and fully-diluted S/O of 26.0M." The analyst also noted that while F2024 is a transition year, F2025 is expected to be transformative for U.S. TULSA-PRO adoption rates. In conclusion, Leede Financial's maintenance of its Buy rating and US$18 price target reflects confidence in Profound Medical's growth potential following the favorable reimbursement update. The share price at the time of the report of US$7.35 represents a potential return of approximately 145% to the analyst's target price, highlighting the significant upside potential as the company advances its commercialization efforts. Sign up for our FREE newsletter at: www.streetwisereports.com/get-newsImportant Disclosures: This article does not constitute investment advice and is not a solicitation for any investment. Streetwise Reports does not render general or specific investment advice and the information on Streetwise Reports should not be considered a recommendation to buy or sell any security. Each reader is encouraged to consult with his or her personal financial adviser and perform their own comprehensive investment research. By opening this page, each reader accepts and agrees to Streetwise Reports' terms of use and full legal disclaimer. Streetwise Reports does not endorse or recommend the business, products, services or securities of any company. This article does not constitute medical advice. Officers, employees and contributors to Streetwise Reports are not licensed medical professionals. Readers should always contact their healthcare professionals for medical advice. For additional disclosures, please click here. Disclosures for Leede Financial Inc., Profound Medical Corp., November 4, 2024 Important Information and Legal Disclaimers Leede Financial Inc. (Leede) is a member of the Canadian Investment Regulatory Organization (CIRO) and a member of the Canadian Investor Protection Fund (CIPF). This document is not an offer to buy or sell or a solicitation of an offer to buy or sell any security or instrument or to participate in any particular investing strategy. Data from various sources were used in the preparation of these documents; the information is believed but in no way warranted to be reliable, accurate and appropriate. All information is as of the date of publication and is subject to change without notice. Any opinions or recommendations expressed herein do not necessarily reflect those of Leede. Leede cannot accept any trading instructions via e-mail as the timely receipt of e-mail messages, or their integrity over the Internet, cannot be guaranteed. Dividend yields change as stock prices change, and companies may change or cancel dividend payments in the future. All securities involve varying amounts of risk, and their values will fluctuate, and the fluctuation of foreign currency exchange rates will also impact your investment returns if measured in Canadian Dollars. Past performance does not guarantee future returns, investments may increase or decrease in value, and you may lose money. Leede employees may buy and sell shares of the companies that are recommended for their own accounts and for the accounts of other clients. Disclosure codes are used in accordance with Policy 3600 of CIRO. Dissemination All final research reports are disseminated to existing and potential institutional clients of Leede Financial Inc. (Leede) in electronic form to intended recipients thorough e-mail and third-party aggregators. Research reports are posted to the Leede website and are accessible to customers who are entitled to the firm’s research. Reproduction of this report in whole or in part without permission is prohibited. Research Analyst Certification The Research Analyst(s) who prepare this report certify that their respective report accurately reflects his/her personal opinion and that no part of his/her compensation was, is, or will be directly or indirectly related to the specific recommendations or views as to the securities or companies. Leede Financial Inc. (Leede) compensates its research analysts from a variety of sources and research analysts may or may not receive compensation based upon Leede investment banking revenue. Canadian Disclosures This research has been approved by Leede Financial Inc. (Leede), which accepts sole responsibility for this research and its dissemination in Canada. Leede is registered and regulated by the Canadian Investment Regulatory Organization (CIRO) and is a member of the Canadian Investor Protection Fund (CIPF). Canadian clients wishing to effect transactions in any designated investment discussed should do so through a Leede Registered Representative. U.S. Disclosures This research report was prepared by Leede Financial Inc. (Leede). Leede is registered and regulated by the Canadian Investment Regulatory Organization (CIRO) and is a member of the Canadian Investor Protection Fund (CIPF). This report does not constitute an offer to sell or the solicitation of an offer to buy any of the securities discussed herein. Leede is not registered as a broker-dealer in the United States and is not subject to U.S. rules regarding the preparation of research reports and the independence of research analysts. Any resulting transactions should be effected through a U.S. broker-dealer. ( Companies Mentioned: PROF:NASDAQ; PRN:TSX, ) Full Article
form Information Security: Harnessing the Overlooked Source for SMB Competitive Advantage By www.itsecurity.com Published On :: Wed, 09 Jun 2010 19:43:36 +0000 On-Demand Webinar > Watch Now!>>SPONSORED BY: AT&TWatch this FREE on-demand webinar to learn how to make the connections between information security and competitive success for yo... Full Article
form Boost Performance & Efficiency with Your Data Center Infrastructure By www.itsecurity.com Published On :: Wed, 07 Jul 2010 19:54:12 +0000 On-Demand Webinar > Watch Now!>>SPONSORED BY: Juniper NetworksWatch this FREE on-demand webinar to learn how you and your company can get started down the road to reach the pinnacle ... Full Article
form Co. Completes Earn-In to Form JV at Advanced Stage Uranium Project in Athabasca Basin By www.streetwisereports.com Published On :: Thu, 24 Oct 2024 00:00:00 PST Skyharbour Resources Ltd. (SYH:TSX.V; SYHBF:OTCQX; SC1P:FSE) has completed its earn-in requirements for a 51% interest at the Russell Lake Uranium Project in the central core of Canada's Eastern Athabasca Basin in Saskatchewan. This comes as the need for more net-zero power is sparking a rebirth of the nuclear industry. Full Article SYH:TSX.V; SYHBF:OTCQX; SC1P:FSE
form Burning Man Canceled: 'Relief' As Burners, Locals See Bright Side Of Informal Events By www.scpr.org Published On :: Thu, 29 Apr 2021 19:00:10 -0700 The pandemic has once again felled Burning Man. Some burners still plan to gather for informal events on the dusty Black Rock Desert Playa this summer.; Credit: Bernard Friel/Education Images/Universal Images Group via Getty Images Emma Bowman | NPRAnd so it goes: Burning Man 2021 is canceled. It's the second year in a row, the popular arts festival won't be held in Nevada's Black Rock Desert due to the pandemic. "We have decided to set our sights on Black Rock City 2022," event officials announced in a blog post on Tuesday. In a frequently-asked-questions section, organizers added: "We've heard from many who don't feel ready to come to Black Rock City. While we're confident in our ability to get a permit and to safeguard public health, we know that co-creating Black Rock City in 2021 would put tremendous strain on our community while we are still ironing out uncertainty." Many would-be attendees praised the decision in comments on the Burning Man website and on social media as a safe one; others are anxiously anticipating a bigger and better 2022 Burn. But the cancellation has put many people in the event's host community at ease. Wary of a trend of rising coronavirus cases in some parts of the region, Washoe County's district health officer Kevin Dick said "the right call was made," in order to lower the risk of spreading infection. "The event draws thousands of people from all over the world," Dick said in an email. "We are seeing large outbreaks of COVID-19 occurring in a number of countries, areas where very contagious COVID-19 variants of concern are prevalent and where low rates of vaccination are occurring." The head of a local Paiute tribe is also feeling less burdened knowing there won't be the annual pilgrimage. The main highway to get to the Black Rock Desert playa, which normally draws tens of thousands of people to the summer event, cuts through tribal lands. "For us it is a sigh of relief," said Janet Davis, chairwoman of the Pyramid Lake Paiute Tribe. Although the event — which brings in about $63 million to the state annually — gives the tribal community a welcome financial boost, Davis said. "We don't know who's vaccinated and who's not," she said. "We've been trying to keep our reservation safe and that happening was too soon for us to open." As with last year, the organization will offer virtual programming during Burn Week, from Aug. 29 through Sept. 7, an experience they say drew 165,000 participants in 2020. In response to a request for more details on the reasons for the cancellation, Burning Man organizers declined to comment further. Earlier this month, though, CEO Marian Goodell said the organization was "weighing the gravity" of implementing a vaccination requirement that she said challenged "radical inclusion," one of the group's 10 principles. Still, for many burners, the news won't extinguish their plans to trek to the desert in droves. Just like last year, revelers are preparing to hold unofficial gatherings on public land in place of the annual event. Last summer, those events — the so-called "rogue" and "free" burns or, unmistakably, "Not Burning Man" — drew an estimated 3,000 people to Black Rock Desert during the time Burning Man is normally held, according to the Bureau of Land Management, the federal agency that approves the organization's permits each year. Kevin Jervis, one such attendee who now lives in Gerlach — a tiny desert town near the event site — welcomed this year's cancellation. He called it "more of a relief than anything. ... A lot of us liked it better the way it happened last year." During the informal festivities, Jervis spent a few days between the playa and its outskirts. He said he and his fellow burners felt like it represented the festival's freewheeling roots. "I've had friends that have been going since '94 and they said it was a lot more like it used to be. We didn't have to go by regulations," he said. "We could have guns, dogs ... it was a lot freer." Even before the pandemic, burners increasingly saw an annual gathering under siege. Event-goers who adhere to Burning Man's counterculture beginnings say the festival's explosion in popularity in the past decade has welcomed a host of bad actors who trash the desert and surrounding communities and disregard the event's founding principles, including "decommodification" and the eco-friendly philosophy of "leave no trace." Some of those perceived threats come from festival officials themselves, he said. A ticket to the main event alone cost over $400 in 2019 — a financial hurdle critics say goes against another tenet long espoused, that "everyone is invited." "People that have never been before came out last year because they either couldn't get a ticket other years or they were just kind of curious. Or they didn't have the money to go to the actual Burn," said Jervis. As for the Pyramid Lake Paiute community, with the reservation largely closed during that period last year, Davis said, "we really didn't see the impact" from a public health standpoint. "You're not talking about 65 — 75,000 people." While there was more traffic, she said, "they moseyed on through and moseyed on out." In the years leading up to the pandemic, BLM had been cracking down on the event's growth. Were the festival to return this year, Burning Man organizers said they would have had to meet a population cap of 69,000, down from its 80,000 limit for previous events. Jervis says he won't miss what he describes as organizers' leniency toward "elites" who set up VIP areas at their camps and hire out to construct their art creations instead of making their own. "A lot of people have gotten sick of what Burning Man's kind of become," he said. Even if this year was a go, he said, burners would still be setting up their own Burning Man-adjacent happenings. Following the announcement of the event's cancellation, people are taking to Facebook groups to reminisce about last year's unsanctioned burns and discuss preparations for their own this summer. "So it seems that as of today there isn't going to be an official [Burning Man Ceremony] this year," James Zapata wrote. "So who's joining me in the dust?" Copyright 2021 NPR. To see more, visit https://www.npr.org. This content is from Southern California Public Radio. View the original story at SCPR.org. Full Article
form Biden Taps A Former Top Scientist At NOAA To Lead The Weather And Climate Agency By www.scpr.org Published On :: Sun, 25 Apr 2021 13:00:17 -0700 The logo of National Oceanic and Atmospheric Administration is seen at the Nation Hurricane Center in Miami on Aug. 29, 2019. President Biden has nominated Rick Spinrad to head NOAA.; Credit: Eva Marie Uzcategui/Getty Images Eric McDaniel | NPRPresident Biden is nominating Rick Spinrad to lead the National Oceanic and Atmospheric Administration, the government's premier agency on climate science which oversees the National Weather Service. Prior to his current role as a professor of oceanography at Oregon State University, Spinrad served as NOAA's top scientist under President Obama and the U.S. representative to the United Nations' Intergovernmental Oceanographic Commission. The nomination comes at a difficult moment in NOAA's history. The agency has been without an official, Senate-confirmed leader since former President Donald Trump took office in January 2017, after his two nominees to lead the agency failed to garner enough support to win a full vote before the Senate. If Spinrad manages to win over the Senate, he will have to contend with a challenge beyond the agency's already-rigorous scientific mandate: restoring public confidence in a traditionally apolitical agency marred by political scandal. In September 2019, then-President Trump wrongly said Alabama was in the projected path of Hurricane Dorian. He continued to reassert the claim for several days, including during an Oval Office briefing on the storm — in which he displayed what appeared to be an official National Weather Service map in which the storm's projected path was extended to Alabama by someone using a black marker. After a National Weather Service office in Birmingham put out a tweet correctly stating that Alabama would not feel the effects of the storm, NOAA published an unsigned defense of the president's claims and rebuking its professional staff who posted the message. Dan Sobien, then-president of the National Weather Service Employees Organization, said at the time that "the hard working employees of the NWS had nothing to do with the utterly disgusting and disingenuous tweet sent out by NOAA management." If confirmed, Spinrad will lead a 12,000-person agency charged with a diverse portfolio that spans daily weather forecasts, climate monitoring, fisheries management and coastal restoration. In a statement, the Environmental Defense Fund's Eric Schwaab applauded Spinrad's nomination, saying that NOAA's workers "couldn't ask for a better leader to restore scientific integrity and honor the agency's mission." Biden, whose administration has made climate action a central focus, has proposed the largest budget in NOAA's history — $6.9 billion, a $1.5 billion increase over the 2021 budget allocated by Congress. It remains to be seen whether Congress will agree to the increase. Copyright 2021 NPR. To see more, visit https://www.npr.org. This content is from Southern California Public Radio. View the original story at SCPR.org. Full Article
form Catawba County makes information on traffic incident locations available via Twitter. By www.catawbacountync.gov Published On :: Wed, 22 Sep 2010 13:57:00 EST Catawba County has upgraded a feed from its 911 Center of the information on calls regarding traffic incidents. The feed shows the type of incident reported, such as a vehicle accident, stranded motorist or vehicle fire, and gives the location of the incident. Only traffic related incidents are reported through this feed. Full Article News Release FYI Public Notice
form Catawba County Children's Agenda Planning Committee releases report after two years of gathering information. By www.catawbacountync.gov Published On :: Thu, 12 May 2011 13:33:00 EST The committee compiled existing information about the status of children in the county. It also held public meetings and surveyed members of the public about their priorities and ideas. The committee found that most children in the county are well-cared for, but that a substantial number are falling through the cracks. A major cause of concern is the large number of children living in poverty. Full Article News Release FYI Please Choose
form Catawba County Facts and Figures page gives wealth of information in many categories By www.catawbacountync.gov Published On :: Tue, 18 Dec 2012 12:30:00 EST Catawba County has launched a performance dashboard, a program that will be the gateway for hundreds of pieces of data on dozens of topics related to the County government, demographics and quality of life. Catawba County Facts and Figures, offers users a choice of exploring data grouped into eight broad categories. Full Article News Release FYI Public Notice
form Randy Cress named Catawba County's new Chief Information Officer. By www.catawbacountync.gov Published On :: Wed, 4 Dec 2013 15:25:00 EST Randy Cress, currently the Systems and Network Manager for Rowan County, North Carolina, is named Catawba County's new Chief Information Officer. Full Article News Release FYI Please Choose
form Reforms Needed to Improve Childrens Reading Skills By Published On :: Wed, 18 Mar 1998 06:00:00 GMT Widespread reforms are needed to ensure that all children are equipped with the skills and instruction they need to learn to read, according to a new report from a committee of the National Research Council. Full Article
form New Report Proposes Framework To Encourage Fluency With Information Technology By Published On :: Thu, 08 Apr 1999 05:00:00 GMT The explosive growth of information technology is having a profound impact on our lives. Full Article
form Opening Statement by Paul Tang on Reducing Medical Errors Requires National Computerized Information Systems - Data Standards Are Crucial to Improving Patient Safety By Published On :: Thu, 20 Nov 2003 06:00:00 GMT Welcome to the public release of the latest Institute of Medicine report on the quality of health care in America. Full Article
form Reducing Medical Errors Requires National Computerized Information Systems - Data Standards Are Crucial to Improving Patient Safety By Published On :: Thu, 20 Nov 2003 06:00:00 GMT To significantly reduce the tens of thousands of deaths and injuries caused by medical errors every year, health care organizations must adopt information technology systems that are capable of collecting and sharing essential health information on patients and their care, says a new report by the Institute of Medicine of the National Academies. Full Article
form Most Social Security Representative Payees Perform Duties Well But Changes Needed to Better Prevent and Detect Misuse of Funds By Published On :: Mon, 30 Jul 2007 05:00:00 GMT Although most people who receive and manage Social Security benefits on behalf of other individuals perform their duties well. Full Article
form New Report on Science Learning at Museums, Zoos, Other Informal Settings By Published On :: Wed, 14 Jan 2009 06:00:00 GMT Each year, tens of millions of Americans, young and old, choose to learn about science in informal ways -- by visiting museums and aquariums, attending after-school programs, pursuing personal hobbies, and watching TV documentaries, for example. Full Article
form Health Care Reform and Increased Patient Needs Require Transformation of Nursing Profession By Published On :: Tue, 05 Oct 2010 05:00:00 GMT Nurses roles, responsibilities, and education should change significantly to meet the increased demand for care that will be created by health care reform and to advance improvements in Americas increasingly complex health system, says a new report from the Institute of Medicine. Full Article
form IOM Report Calls for Cultural Transformation of Attitudes Toward Pain and Its Prevention and Management By Published On :: Wed, 29 Jun 2011 05:00:00 GMT Every year, approximately 100 million* adult Americans experience chronic pain, a condition that costs the nation between $560 billion and $635 billion annually, says a new report from the Institute of Medicine. Full Article