Apple выпустила новую версию программы для видеомонтажа Final Cut Pro 11, которая стала первым обновлением за 13 лет.

Kiss, F. Geological Survey of Canada, Open File 8728, 2020, 10 sheets, https://doi.org/10.4095/326147
<a href="https://geoscan.nrcan.gc.ca/images/geoscan/gid_326147-1.jpg"><img src="https://geoscan.nrcan.gc.ca/images/geoscan/gid_326147-1.jpg" title="Geological Survey of Canada, Open File 8728, 2020, 10 sheets, https://doi.org/10.4095/326147" height="150" border="1" /></a>

Thomas, M D. Geological Survey of Canada, Bulletin 618, 2022, 33 pages, https://doi.org/10.4095/329250
<a href="https://geoscan.nrcan.gc.ca/images/geoscan/gid_329250.jpg"><img src="https://geoscan.nrcan.gc.ca/images/geoscan/gid_329250.jpg" title="Geological Survey of Canada, Bulletin 618, 2022, 33 pages, https://doi.org/10.4095/329250" height="150" border="1" /></a>

Thomas, M D. Geological Survey of Canada, Current Research (Online) 2022-1, 2022, 22 pages, https://doi.org/10.4095/328244
<a href="https://geoscan.nrcan.gc.ca/images/geoscan/gid_328244.jpg"><img src="https://geoscan.nrcan.gc.ca/images/geoscan/gid_328244.jpg" title="Geological Survey of Canada, Current Research (Online) 2022-1, 2022, 22 pages, https://doi.org/10.4095/328244" height="150" border="1" /></a>

Coyle, M; Fortin, R. Geological Survey of Canada, Open File 9053, 2023, 1 sheet, https://doi.org/10.4095/332249
<a href="https://geoscan.nrcan.gc.ca/images/geoscan/gid_332249.jpg"><img src="https://geoscan.nrcan.gc.ca/images/geoscan/gid_332249.jpg" title="Geological Survey of Canada, Open File 9053, 2023, 1 sheet, https://doi.org/10.4095/332249" height="150" border="1" /></a>

Coyle, M; Fortin, R. Geological Survey of Canada, Open File 9052, 2023, 1 sheet, https://doi.org/10.4095/332248
<a href="https://geoscan.nrcan.gc.ca/images/geoscan/gid_332248.jpg"><img src="https://geoscan.nrcan.gc.ca/images/geoscan/gid_332248.jpg" title="Geological Survey of Canada, Open File 9052, 2023, 1 sheet, https://doi.org/10.4095/332248" height="150" border="1" /></a>

Coyle, M; Fortin, R. Geological Survey of Canada, Open File 9043, 2023, 1 sheet, https://doi.org/10.4095/332239
<a href="https://geoscan.nrcan.gc.ca/images/geoscan/gid_332239.jpg"><img src="https://geoscan.nrcan.gc.ca/images/geoscan/gid_332239.jpg" title="Geological Survey of Canada, Open File 9043, 2023, 1 sheet, https://doi.org/10.4095/332239" height="150" border="1" /></a>

Coyle, M; Fortin, R. Geological Survey of Canada, Open File 9042, 2023, 1 sheet, https://doi.org/10.4095/332238
<a href="https://geoscan.nrcan.gc.ca/images/geoscan/gid_332238.jpg"><img src="https://geoscan.nrcan.gc.ca/images/geoscan/gid_332238.jpg" title="Geological Survey of Canada, Open File 9042, 2023, 1 sheet, https://doi.org/10.4095/332238" height="150" border="1" /></a>

Coyle, M; Fortin, R. Geological Survey of Canada, Open File 9033, 2023, 1 sheet, https://doi.org/10.4095/332229
<a href="https://geoscan.nrcan.gc.ca/images/geoscan/gid_332229.jpg"><img src="https://geoscan.nrcan.gc.ca/images/geoscan/gid_332229.jpg" title="Geological Survey of Canada, Open File 9033, 2023, 1 sheet, https://doi.org/10.4095/332229" height="150" border="1" /></a>

Coyle, M; Fortin, R. Geological Survey of Canada, Open File 9032, 2023, 1 sheet, https://doi.org/10.4095/332228
<a href="https://geoscan.nrcan.gc.ca/images/geoscan/gid_332228.jpg"><img src="https://geoscan.nrcan.gc.ca/images/geoscan/gid_332228.jpg" title="Geological Survey of Canada, Open File 9032, 2023, 1 sheet, https://doi.org/10.4095/332228" height="150" border="1" /></a>

Coyle, M; Fortin, R. Geological Survey of Canada, Open File 9023, 2023, 1 sheet, https://doi.org/10.4095/332219
<a href="https://geoscan.nrcan.gc.ca/images/geoscan/gid_332219.jpg"><img src="https://geoscan.nrcan.gc.ca/images/geoscan/gid_332219.jpg" title="Geological Survey of Canada, Open File 9023, 2023, 1 sheet, https://doi.org/10.4095/332219" height="150" border="1" /></a>

Coyle, M; Fortin, R. Geological Survey of Canada, Open File 9022, 2023, 1 sheet, https://doi.org/10.4095/332218
<a href="https://geoscan.nrcan.gc.ca/images/geoscan/gid_332218.jpg"><img src="https://geoscan.nrcan.gc.ca/images/geoscan/gid_332218.jpg" title="Geological Survey of Canada, Open File 9022, 2023, 1 sheet, https://doi.org/10.4095/332218" height="150" border="1" /></a>

Coyle, M; Fortin, R. Geological Survey of Canada, Open File 9013, 2023, 1 sheet, https://doi.org/10.4095/332209
<a href="https://geoscan.nrcan.gc.ca/images/geoscan/gid_332209.jpg"><img src="https://geoscan.nrcan.gc.ca/images/geoscan/gid_332209.jpg" title="Geological Survey of Canada, Open File 9013, 2023, 1 sheet, https://doi.org/10.4095/332209" height="150" border="1" /></a>

Coyle, M; Fortin, R. Geological Survey of Canada, Open File 9012, 2023, 1 sheet, https://doi.org/10.4095/332208
<a href="https://geoscan.nrcan.gc.ca/images/geoscan/gid_332208.jpg"><img src="https://geoscan.nrcan.gc.ca/images/geoscan/gid_332208.jpg" title="Geological Survey of Canada, Open File 9012, 2023, 1 sheet, https://doi.org/10.4095/332208" height="150" border="1" /></a>

Coyle, M; Fortin, R. Geological Survey of Canada, Open File 9003, 2023, 1 sheet, https://doi.org/10.4095/332199
<a href="https://geoscan.nrcan.gc.ca/images/geoscan/gid_332199.jpg"><img src="https://geoscan.nrcan.gc.ca/images/geoscan/gid_332199.jpg" title="Geological Survey of Canada, Open File 9003, 2023, 1 sheet, https://doi.org/10.4095/332199" height="150" border="1" /></a>

Coyle, M; Fortin, R. Geological Survey of Canada, Open File 9002, 2023, 1 sheet, https://doi.org/10.4095/332198
<a href="https://geoscan.nrcan.gc.ca/images/geoscan/gid_332198.jpg"><img src="https://geoscan.nrcan.gc.ca/images/geoscan/gid_332198.jpg" title="Geological Survey of Canada, Open File 9002, 2023, 1 sheet, https://doi.org/10.4095/332198" height="150" border="1" /></a>

Kabanov, P B; Abdi, W; Biggin, A J; Bilot, I; van der Boon, A; Gouwy, S; Grasby, S; Minions, N; Percival, J; Thallner, D; Twemlow, C; VandenBerg, R. Geological Survey of Canada, Open File 8940, 2023, 13 pages, https://doi.org/10.4095/331201
<a href="https://geoscan.nrcan.gc.ca/images/geoscan/gid_331201.jpg"><img src="https://geoscan.nrcan.gc.ca/images/geoscan/gid_331201.jpg" title="Geological Survey of Canada, Open File 8940, 2023, 13 pages, https://doi.org/10.4095/331201" height="150" border="1" /></a>

I like the convenience of a charger for my phone in my car or by my desk at the office. The constant plugging and unplugging a micro-usb cord is a bit harsh though, a least from a first world problem perspective. I ran across a post on the XDA-Developers forum that described modding a Wireless Charger […]

Fr. John Oliver reflects on forgiveness, and the energies of the heart.

LifeSafety Power’s ProWire now includes magnetic, LED light strips for the E6, E8 and E12 products — a component that brings instant illumination to enclosures to assist with installing, managing and servicing power solutions.

Electromagnetic and radio frequency interference (EMI-RFI) can disrupt the performance of sensitive communications systems and devices, potentially compromising confidential data.

The high value of honey and perceived cachet surrounding its provenance makes it a vulnerable target, whether through fraudsters claiming false geographical origin, declaring false botanical variety or diluting it with cheaper sugar syrups.

BGS leads update to maps of the Earth’s magnetic field  British Geological Survey

Electromagnetic geophysics in Japan: a conference experience  British Geological Survey

We show that the interplay of multiple magnetic sublattices in Er2CuMnMn4O12 leads to four magnetic phase transitions characterized by the onset of ferrimagnetic order, spin-reorientation, spin canting, and the polarization of Er ions. While we elucidate numerous features of this complex magnetic system, the exact nature of the low-temperature coupling between erbium and manganese, and the origin of a k = (0, 0, ½) modulation, remain intriguing topics for future studies.

A comparative description is presented of the symmetry and the magnetic structures found in the family of double perovskites A2MnB'O6 (mainly B' = Co and some Ni compounds for comparative purposes).

Through a combination of magnetic susceptibility, specific heat, and neutron powder diffraction measurements we have revealed a sequence of four magnetic phase transitions in the columnar quadruple perovskite Er2CuMnMn4O12. A key feature of the quadruple perovskite structural framework is the complex interplay of multiple magnetic sublattices via frustrated exchange topologies and competing magnetic anisotropies. It is shown that in Er2CuMnMn4O12, this phenomenology gives rise to multiple spin-reorientation transitions driven by the competition of easy-axis single ion anisotropy and the Dzyaloshinskii–Moriya interaction; both within the manganese B-site sublattice. At low temperature, one Er sublattice orders due to a finite f-d exchange field aligned parallel to its Ising axis, while the other Er sublattice remains non-magnetic until a final, symmetry-breaking phase transition into the ground state. This non-trivial low-temperature interplay of transition metal and rare-earth sublattices, as well as an observed k = (0, 0, ½) periodicity in both manganese spin canting and Er ordering, raises future challenges to develop a complete understanding of the R2CuMnMn4O12 family.

Superconducting undulators (SCUs) can offer a much higher on-axis undulator field than state-of-the-art cryogenic permanent-magnet undulators with the same period and vacuum gap. The development of shorter-period and high-field SCUs would allow the free-electron laser and synchrotron radiation source community to reduce both the length of undulators and the dimensions of the accelerator. Magnetic measurements are essential for characterizing the magnetic field quality of undulators for operation in a modern light source. Hall probe scanning is so far the most mature technique for local field characterization of undulators. This article focuses on the systematic error caused by thermal contraction that influences Hall probe measurements carried out in a liquid helium cryostat. A novel procedure, based on the redundant measurement of the magnetic field using multiple Hall probes at known relative distance, is introduced for the correction of such systematic error.

Calculations and measurements of polarization-dependent soft X-ray scattering intensity are presented during a magnetic hysteresis cycle. It is confirmed that the dependence of the intensity on the magnetic moment can be linear, quadratic or a combination of both, depending on the polarization of the incident X-ray beam and the direction of the magnetic moment. With a linearly polarized beam, the scattered intensity will have a purely quadratic dependence on the magnetic moment when the magnetic moment is parallel to the scattering plane. However, with the magnetic moment perpendicular to the scattering plane, there is also a linear component. This means that, when measuring the hysteresis with linear polarization during a hysteresis cycle, the intensity will be an even function of the applied field when the change in the magnetic moment (and field) is confined within the scattering plane but becomes more complicated when the magnetic moment is out of the scattering plane. Furthermore, with circular polarization, the dependence of the scattered intensity on the moment is a combination of linear and quadratic. With the moment parallel to the scattering plane, the linear component changes with the helicity of the incident beam. Surprisingly, in stark contrast to absorption studies, even when the magnetic moment is perpendicular to the scattering plane there is still a dependence on the moment with a linear component. This linear component is completely independent of the helicity of the beam, meaning that the hysteresis loops will not be inverted with helicity.

Nanoscale structural and electronic heterogeneities are prevalent in condensed matter physics. Investigating these heterogeneities in 3D has become an important task for understanding material properties. To provide a tool to unravel the connection between nanoscale heterogeneity and macroscopic emergent properties in magnetic materials, scanning transmission X-ray microscopy (STXM) is combined with X-ray magnetic circular dichroism. A vector tomography algorithm has been developed to reconstruct the full 3D magnetic vector field without any prior noise assumptions or knowledge about the sample. Two tomographic scans around the vertical axis are acquired on single-crystalline Nd2Fe14B pillars tilted at two different angles, with 2D STXM projections recorded using a focused 120 nm X-ray beam with left and right circular polarization. Image alignment and iterative registration have been implemented based on the 2D STXM projections for the two tilts. Dichroic projections obtained from difference images are used for the tomographic reconstruction to obtain the 3D magnetization distribution at the nanoscale.

The synthesis, crystal structure and magnetic properties of an ox­am­ate-con­taining erbium(III) com­plex, namely, tetra­butyl­ammonium aqua­[N-(2,4,6-tri­methyl­phen­yl)oxamato]erbium(III)–di­methyl sulfoxide–water (1/3/1.5), (C16H36N)[Er(C11H12NO3)4(H2O)]·3C2H6OS·1.5H2O or n-Bu4N[Er(Htmpa)4(H2O)]·3DMSO·1.5H2O (1), are reported. The crystal structure of 1 reveals the occurrence of an erbium(III) ion, which is surrounded by four N-phenyl-substituted ox­am­ate ligands and one water mol­ecule in a nine-coordinated environment, together with one tetra­butyl­ammonium cation acting as a counter-ion, and one water and three dimethyl sulfoxide (DMSO) mol­ecules of crystallization. Variable-temperature static (dc) and dynamic (ac) magnetic mea­sure­ments were carried out for this mononuclear com­plex, revealing that it behaves as a field-induced single-ion magnet (SIM) below 5.0 K.

The orientation ordering and assembly behavior of silica–nickel Janus particles in a static external magnetic field were probed by ultra small-angle X-ray scattering (USAXS). Even in a weak applied field, the net magnetic moments of the individual particles aligned in the direction of the field, as indicated by the anisotropy in the recorded USAXS patterns. X-ray photon correlation spectroscopy (XPCS) measurements on these suspensions revealed that the corresponding particle dynamics are primarily Brownian diffusion [Zinn, Sharpnack & Narayanan (2023). Soft Matter, 19, 2311–2318]. At higher fields, the magnetic forces led to chain-like configurations of particles, as indicated by an additional feature in the USAXS pattern. A theoretical framework is provided for the quantitative interpretation of the observed anisotropic scattering diagrams and the corresponding degree of orientation. No anisotropy was detected when the magnetic field was applied along the beam direction, which is also replicated by the model. The method presented here could be useful for the interpretation of oriented scattering patterns from a wide variety of particulate systems. The combination of USAXS and XPCS is a powerful approach for investigating asymmetric colloidal particles in external fields.

Three solid solutions of [CH3NH3]CoxNi1−x(HCOO)3, with x = 0.25 (1), x = 0.50 (2) and x = 0.75 (3), were synthesized and their nuclear structures and magnetic properties were characterized using single-crystal neutron diffraction and magnetization measurements. At room temperature, all three compounds crystallize in the Pnma orthorhombic space group, akin to the cobalt and nickel end series members. On cooling, each compound undergoes a distinct series of structural transitions to modulated structures. Compound 1 exhibits a phase transition to a modulated structure analogous to the pure Ni compound [Cañadillas-Delgado, L., Mazzuca, L., Fabelo, O., Rodríguez-Carvajal, J. & Petricek, V. (2020). Inorg. Chem. 59, 17896–17905], whereas compound 3 maintains the behaviour observed in the pure Co compound reported previously [Canadillas-Delgado, L., Mazzuca, L., Fabelo, O., Rodriguez-Velamazan, J. A. & Rodriguez-Carvajal, J. (2019). IUCrJ, 6, 105–115], although in both cases the temperatures at which the phase transitions occur differ slightly from the pure phases. Monochromatic neutron diffraction measurements showed that the structural evolution of 2 diverges from that of either parent compound, with competing hydrogen bond interactions that drive the modulation throughout the series, producing a unique sequence of phases. It involves two modulated phases below 96 (3) and 59 (3) K, with different q vectors, similar to the pure Co compound (with modulated phases below 128 and 96 K); however, it maintains the modulated phase below magnetic order [at 22.5 (7) K], resembling the pure Ni compound (which presents magnetic order below 34 K), resulting in an improper modulated magnetic structure. Despite these large-scale structural changes, magnetometry data reveal that the bulk magnetic properties of these solid solutions form a linear continuum between the end members. Notably, doping of the metal site in these solid solutions allows for tuning of bulk magnetic properties, including magnetic ordering temperature, transition temperatures and the nature of nuclear phase transitions, through adjustment of metal ratios.

A few real case examples are presented on how to report magnetic structures, with precise step-by-step explanations, following the guidelines of the IUCr Commission on Magnetic Structures [Perez-Mato et al. (2024). Acta Cryst. B80, 219–234]. Four examples have been chosen, illustrating different types of single-k magnetic orders, from the basic case to more complex ones, including odd-harmonics, and one multi-k order. In addition to acquainting researchers with the process of communicating commensurate magnetic structures, these examples also aim to clarify important concepts, which are used throughout the guidelines, such as the transformation to a standard setting of a magnetic space group.

A polycrystalline sample LuCrO3 has been characterized by neutron powder diffraction (NPD) and magnetization measurements. Its crystal structure has been Rietveld refined from NPD data in space group Pnma; this perovskite contains strongly tilted CrO6 octahedra with extremely bent Cr—O—Cr superexchange angles of ∼142°. The NPD data show that below Néel temperature (TN ≃ 131 K), the magnetic structure can be defined as an A-type antiferromagnetic arrangement of Cr3+ magnetic moments, aligned along the b axis, with a canting along the c axis. A noticeable magneto­strictive effect is observed in the unit-cell parameters and volume upon cooling down across TN. The AC magnetic susceptibility indicates the onset of magnetic ordering below 112.6 K; the magnetization isotherms below TN show a nonlinear behaviour that is associated with the described canting of the Cr3+ magnetic moments. From the Curie–Weiss law, the effective moment of the Cr3+ sublattice is found to be μeff = 3.55 μB (calculated 3.7 μB) while the ΘCW parameter yields a value of −155 K, indicating antiferromagnetic interactions. There is a conspicuous increase of TN upon the application of external pressure, which must be due to shortening of the Cr—O bond length under compression that increases the orbital overlap integral.

In recent decades, sustained theoretical and software developments have clearly established that representation analysis and magnetic symmetry groups are complementary concepts that should be used together in the investigation and description of magnetic structures. Historically, they were considered alternative approaches, but currently, magnetic space groups and magnetic superspace groups can be routinely used together with representation analysis, aided by state-of-the-art software tools. After exploring the historical antagonism between these two approaches, we emphasize the significant advancements made in understanding and formally describing magnetic structures by embracing their combined use.

The magnetic and crystal structures of manganese and nickel monoxides have been studied using high-resolution neutron diffraction. The known 1k-structures based on the single propagation vector [½ ½ ½] for the parent paramagnetic space group Fm3m are forced to have monoclinic magnetic symmetry and are not possible in rhombohedral symmetry. However, the monoclinic distortions from the rhombohedral crystal metric allowed by symmetry are very small, and the explicit monoclinic splittings of the diffraction peaks have not been experimentally observed. We analyse the magnetic crystallographic models metrically compatible with our experimental data in full detail by using isotropy subgroup representation approach, including rhombohedral solutions based on the propagation vector star {[½ ½ ½], [−½ ½ ½], [½−½ ½], [½ ½ −½]}. Although the full star rhombohedral RI3c structure can equally well fit our diffraction data for NiO, we conclude that the best solution for the crystal and magnetic structures for NiO and MnO is the 1k monoclinic model with the magnetic space group Cc2/c (Belov–Neronova–Smirnova No. 15.90, UNI symbol C2/c.1'c[C2/m]).

JANA2020 is a program developed for the solution and refinement of regular, twinned, modulated, and composite crystal structures. In addition, JANA2020 also includes a magnetic option for solving magnetic structures from powder and single-crystal neutron diffraction data. This tool uses magnetic space and superspace symmetry to describe commensurate and incommensurate magnetic structures. The basics of the underlying formulation of magnetic structure factors and the use of magnetic symmetry for handling modulated and non-modulated magnetic structures are presented here, together with the general features of the magnetic tool. Examples of structures solved in the magnetic option of JANA2020 are given to illustrate the operation and capabilities of the program.

The embedded call to a special version of the web-based Bilbao Crystallographic Server tool k-SUBGROUPSMAG from within GSAS-II to form a list of all possible commensurate magnetic subgroups of a parent magnetic grey group is described. It facilitates the selection and refinement of the best commensurate magnetic structure model by having all the analysis tools including Rietveld refinement in one place as part of GSAS-II. It also provides the chosen magnetic space group as one of the 1421 possible standard Belov–Neronova–Smirnova forms or equivalent non-standard versions.

The Australian Synchrotron Imaging and Medical Beamline (IMBL) uses a superconducting multipole wiggler (SCMPW) source, dual crystal Laue monochromator and 135 m propagation distance to enable imaging and computed tomography (CT) studies of large samples with mono-energetic radiation. This study aimed to quantify two methods for CT dose reduction: wiggler source operation at reduced magnetic field strength, and beam modulation with spatial filters placed upstream from the sample. Transmission measurements with copper were used to indirectly quantify the influence of third harmonic radiation. Operation at lower wiggler magnetic field strength reduces dose rates by an order of magnitude, and suppresses the influence of harmonic radiation, which is of significance near 30 keV. Beam shaping filters modulate the incident beam profile for near constant transmitted signal, and offer protection to radio-sensitive surface organs: the eye lens, thyroid and female breast. Their effect is to reduce the peripheral dose and the dose to the scanned volume by about 10% for biological samples of 35–50 mm diameter and by 20–30% for samples of up to 160 mm diameter. CT dosimetry results are presented as in-air measurements that are specific to the IMBL, and as ratios to in-air measurements that may be applied to other beamlines. As CT dose calculators for small animals are yet to be developed, results presented here and in a previous study may be used to estimate absorbed dose to organs near the surface and the isocentre.

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Earth's magnetic field seems steady and true -- reliable enough to navigate by. Yet, largely hidden from daily life, the field drifts, waxes and wanes. The magnetic North Pole is currently shifting toward Siberia, forcing the Global Positioning System that underlies modern navigation to update its software sooner than expected. Every several hundred thousand years, the magnetic field dramatically shifts and reverses its polarity. Magnetic north flips to the geographic South Pole and, eventually, back again. This reversal has happened countless times over Earth's history, but scientists' understanding of why and how the field reverses is limited. The researchers find that the most recent field reversal 770,000 years ago took at least 22,000 years to complete, several times longer than previously thought. The results call into question controversial findings that some reversals could occur within a human lifetime.

Image credit: Brad Singer

Installing the magnetic filter will increase energy efficiency, significantly prolong boiler life, protect pipework and considerably reduce maintenance calls, the company notes.

FDA-cleared depression treatment is a non-invasive procedure that does not require sedation or drugs, and has minimal to no side effects.

How do powerful geomagnetic storms from the Sun influence the Earth’s atmosphere? This is what two separate studies (Karan et al. (2024) and Evans et

What processes provide energy to the solar wind as it travels away from the Sun and throughout the solar system? This is what a recent study published in S