elo Smoking vapes develops EVALI, cancer and dental problems By english.pravda.ru Published On :: Thu, 29 Aug 2024 17:58:00 +0300 Smoking vapes and electronic cigarettes may lead to the development of a new lung disease that was dubbed as EVALI (E-cigarette and Vaping use-Associated Lung Injury). Research works to study EVALI slowed down with the onset of the coronavirus pandemic due to the similarity of symptoms, whereas the detection rate stopped growing, the Russian Health Ministry said. Symptoms of EVALI similar to those of COVID-19 Symptoms of the new disease are in many ways similar to symptoms of COVID-19. They include: Full Article Health
elo KRISS Partners with Domestic University Hospitals to Develop Disease Diagnosis and Treatment Technology, Alleviating Patient Burden By www.newswise.com Published On :: Wed, 13 Nov 2024 00:00:34 EST The Korea Research Institute of Standards and Science (KRISS) announced that they have developed an advanced disease diagnosis and treatment system based on nanomaterials. Full Article
elo Discovery of 2,586 Orphan Genes in Rosa Chinensis Provides Insights Into Stress Adaptation and Flower Development By www.newswise.com Published On :: Wed, 13 Nov 2024 01:50:12 EST A research team has identified 2,586 orphan genes (OGs) in Rosa chinensis, offering new insights into the role of these unique genes in flower development, stress response, and environmental adaptation. Full Article
elo KRISS Partners with Domestic University Hospitals to Develop Disease Diagnosis and Treatment Technology, Alleviating Patient Burden By www.newswise.com Published On :: Wed, 13 Nov 2024 00:00:34 EST The Korea Research Institute of Standards and Science (KRISS) announced that they have developed an advanced disease diagnosis and treatment system based on nanomaterials. Full Article
elo Discovery of 2,586 Orphan Genes in Rosa Chinensis Provides Insights Into Stress Adaptation and Flower Development By www.newswise.com Published On :: Wed, 13 Nov 2024 01:50:12 EST A research team has identified 2,586 orphan genes (OGs) in Rosa chinensis, offering new insights into the role of these unique genes in flower development, stress response, and environmental adaptation. Full Article
elo Quarantine Agency Develops Differential Diagnosis Technology for Lumpy Skin Disease By world.kbs.co.kr Published On :: Wed, 25 Sep 2024 16:57:36 +0900 [Science] : The Animal and Plant Quarantine Agency says it has developed, for the first time in the world, a differential diagnosis technology for lumpy skin disease(LSD), a viral disease that affects cattle. With the technology, jointly developed with Median Diagnostics, it can be determined within eight hours if a ...[more...] Full Article Science
elo Space Agency to Develop Lunar Module to be Sent to Moon by 2032 By world.kbs.co.kr Published On :: Mon, 04 Nov 2024 17:44:41 +0900 [Science] : The Korea AeroSpace Administration and the Korea Aerospace Research Institute are set to proceed with the development of a lunar module after signing an agreement on the second phase of the nation’s moon exploration project. According to the state agency on Monday, some 530 billion won, or around 386 ...[more...] Full Article Science
elo PM Han in Hangeul Day Speech: Nation Has Duty to Further Develop Korean Alphabet By world.kbs.co.kr Published On :: Wed, 09 Oct 2024 14:17:51 +0900 [Culture] : Prime Minister Han Duck-soo said the nation has a duty to further develop the Korean alphabet, hangeul, which has gained worldwide recognition as a unique writing system. At a government ceremony marking the 578th Hangeul Day on Wednesday, Han raised concerns about “indifference to the Korean language” ...[more...] Full Article Culture
elo KOSPI Slips below 2,500 Threshold for First Time since Black Monday in August By world.kbs.co.kr Published On :: Tue, 12 Nov 2024 17:55:50 +0900 [Economy] : South Korea’s benchmark Korea Composite Stock Price Index(KOSPI) slipped below the two-thousand-500 threshold on Tuesday for the first time since August’s “Black Monday.” The KOSPI dipped 49-point-09 points, or one-point-94 percent, on Tuesday to close at two-thousand-482-point-57. In the ...[more...] Full Article Economy
elo KOSDAQ Falls below 700 for First Time in 2 Months By world.kbs.co.kr Published On :: Wed, 13 Nov 2024 11:20:48 +0900 [Economy] : South Korea’s tech-laden KOSDAQ fell below the 700 mark during trading for the first time in two months. As of 10:12 a.m. Wednesday, the secondary KOSDAQ market stood at 697-point-94, down 12-point-58 points or one-point-77 percent from the previous day. It marks the first time the KOSDAQ has ...[more...] Full Article Economy
elo Product development: properties and resources - British Geological Survey By news.google.com Published On :: Wed, 23 Sep 2020 13:28:59 GMT Product development: properties and resources British Geological Survey Full Article
elo First national-scale groundwater model in Great Britain developed - British Geological Survey By news.google.com Published On :: Tue, 14 May 2024 10:50:37 GMT First national-scale groundwater model in Great Britain developed British Geological Survey Full Article
elo International geoscience research and development - British Geological Survey By news.google.com Published On :: Sat, 20 Jan 2024 09:25:00 GMT International geoscience research and development British Geological Survey Full Article
elo Local MP checks in on development of new geothermal 'living laboratory' in Nottinghamshire - British Geological Survey By news.google.com Published On :: Thu, 19 Sep 2024 07:00:00 GMT Local MP checks in on development of new geothermal 'living laboratory' in Nottinghamshire British Geological Survey Full Article
elo A new modular framework for high-level application development at HEPS By journals.iucr.org Published On :: 2024-02-01 As a representative of the fourth-generation light sources, the High Energy Photon Source (HEPS) in Beijing, China, utilizes a multi-bend achromat lattice to obtain an approximately 100 times emittance reduction compared with third-generation light sources. New technologies bring new challenges to operate the storage ring. In order to meet the beam commissioning requirements of HEPS, a new framework for the development of high-level applications (HLAs) has been created. The key part of the new framework is a dual-layer physical module to facilitate the seamless fusion of physical simulation models with the real machine, allowing for fast switching between different simulation models to accommodate the various simulation scenarios. As a framework designed for development of physical applications, all variables are based on physical quantities. This allows physicists to analytically assess measurement parameters and optimize machine parameters in a more intuitive manner. To enhance both extensibility and adaptability, a modular design strategy is utilized, partitioning the entire framework into discrete modules in alignment with the requirements of HLA development. This strategy not only facilitates the independent development of each module but also minimizes inter-module coupling, thereby simplifying the maintenance and expansion of the entire framework. To simplify the development complexity, the design of the new framework is implemented using Python and is called Python-based Accelerator Physics Application Set (Pyapas). Taking advantage of Python's flexibility and robust library support, we are able to develop and iterate quickly, while also allowing for seamless integration with other scientific computing applications. HLAs for both the HEPS linac and booster have been successfully developed. During the beam commissioning process at the linac, Pyapas's ease of use and reliability have significantly reduced the time required for the beam commissioning operators. As a development framework for HLA designed for the new-generation light sources, Pyapas has the versatility to be employed with HEPS, as well as with other comparable light sources, due to its adaptability. Full Article text
elo Development of the multiplex imaging chamber at PAL-XFEL By journals.iucr.org Published On :: 2024-03-22 Various X-ray techniques are employed to investigate specimens in diverse fields. Generally, scattering and absorption/emission processes occur due to the interaction of X-rays with matter. The output signals from these processes contain structural information and the electronic structure of specimens, respectively. The combination of complementary X-ray techniques improves the understanding of complex systems holistically. In this context, we introduce a multiplex imaging instrument that can collect small-/wide-angle X-ray diffraction and X-ray emission spectra simultaneously to investigate morphological information with nanoscale resolution, crystal arrangement at the atomic scale and the electronic structure of specimens. Full Article text
elo Development of dual-beamline photoelectron momentum microscopy for valence orbital analysis By journals.iucr.org Published On :: 2024-04-15 The soft X-ray photoelectron momentum microscopy (PMM) experimental station at the UVSOR Synchrotron Facility has been recently upgraded by additionally guiding vacuum ultraviolet (VUV) light in a normal-incidence configuration. PMM offers a very powerful tool for comprehensive electronic structure analyses in real and momentum spaces. In this work, a VUV beam with variable polarization in the normal-incidence geometry was obtained at the same sample position as the soft X-ray beam from BL6U by branching the VUV beamline BL7U. The valence electronic structure of the Au(111) surface was measured using horizontal and vertical linearly polarized (s-polarized) light excitations from BL7U in addition to horizontal linearly polarized (p-polarized) light excitations from BL6U. Such highly symmetric photoemission geometry with normal incidence offers direct access to atomic orbital information via photon polarization-dependent transition-matrix-element analysis. Full Article text
elo Developing an in situ LED irradiation system for small-angle X-ray scattering at B21, Diamond Light Source By journals.iucr.org Published On :: 2024-05-31 Beamline B21 at the Diamond Light Source synchrotron in the UK is a small-angle X-ray scattering (SAXS) beamline that specializes in high-throughput measurements via automated sample delivery systems. A system has been developed whereby a sample can be illuminated by a focused beam of light coincident with the X-ray beam. The system is compatible with the highly automated sample delivery system at the beamline and allows a beamline user to select a light source from a broad range of wavelengths across the UV and visible spectrum and to control the timing and duration of the light pulse with respect to the X-ray exposure of the SAXS measurement. The intensity of the light source has been characterized across the wavelength range enabling experiments where a quantitative measure of dose is important. Finally, the utility of the system is demonstrated via measurement of several light-responsive samples. Full Article text
elo Mapping of lithium ion concentrations in 3D structures through development of in situ correlative imaging of X-ray Compton scattering-computed tomography By journals.iucr.org Published On :: 2024-06-05 Understanding the correlation between chemical and microstructural properties is critical for unraveling the fundamental relationship between materials chemistry and physical structures that can benefit materials science and engineering. Here, we demonstrate novel in situ correlative imaging of the X-ray Compton scattering computed tomography (XCS-CT) technique for studying this fundamental relationship. XCS-CT can image light elements that do not usually exhibit strong signals using other X-ray characterization techniques. This paper describes the XCS-CT setup and data analysis method for calculating the valence electron momentum density and lithium-ion concentration, and provides two examples of spatially and temporally resolved chemical properties inside batteries in 3D. XCS-CT was applied to study two types of rechargeable lithium batteries in standard coin cell casings: (1) a lithium-ion battery containing a cathode of bespoke microstructure and liquid electrolyte, and (2) a solid-state battery containing a solid-polymer electrolyte. The XCS-CT technique is beneficial to a wide variety of materials and systems to map chemical composition changes in 3D structures. Full Article text
elo Development of a portable and cost-effective femtosecond fibre laser synchronizable with synchrotron X-ray pulses By journals.iucr.org Published On :: 2024-06-20 This study introduces a compact, portable femtosecond fibre laser system designed for synchronization with SPring-8 synchrotron X-ray pulses in a uniform filling mode. Unlike traditional titanium–sapphire mode-locked lasers, which are fixed installations, our system utilizes fibre laser technology to provide a practical alternative for time-resolved spectroscopy, striking a balance between usability, portability and cost-efficiency. Comprehensive evaluations, including pulse characterization, timing jitter and frequency stability tests revealed a centre wavelength of 1600 nm, a pulse energy of 4.5 nJ, a pulse duration of 35 fs with a timing jitter of less than 9 ps, confirming the suitability of the system for time-resolved spectroscopic studies. This development enhances the feasibility of experiments that combine synchrotron X-rays and laser pulses, offering significant scientific contributions by enabling more flexible and diverse research applications. Full Article text
elo Development and commissioning of a broadband online X-ray spectrometer for the SXFEL Facility By journals.iucr.org Published On :: 2024-07-29 A broadband online X-ray spectrometer has been designed and commissioned at the SUD beamline of the Shanghai Soft X-ray Free-Electron Laser Facility, which can deliver both SASE and seeded FEL pulses to user experiments, spanning the photon energy range of 50–620 eV. The resolving powers of the spectrometer calibrated via online measurement at 92 eV and 249 eV are ∼20000 and ∼15000, respectively, and the absolute photon energy is characterized by an electron time-of-flight spectrometer. The high energy resolution provided by the spectrometer can differentiate the fine structure in the FEL spectrum, to determine its pulse length. Full Article text
elo Development of a high-performance and cost-effective in-vacuum undulator By journals.iucr.org Published On :: 2024-08-01 In-vacuum undulators (IVUs), which have become an essential tool in synchrotron radiation facilities, have two technical challenges toward further advancement: one is a strong attractive force between top and bottom magnetic arrays, and the other is a stringent requirement on magnetic materials to avoid demagnetization. The former imposes a complicated design on mechanical and vacuum structures, while the latter limits the possibility of using high-performance permanent magnets. To solve these issues, a number of technical developments have been made, such as force cancellation and modularization of magnetic arrays, and enhancement of resistance against demagnetization by means of a special magnetic circuit. The performance of a new IVU built upon these technologies has revealed their effectiveness for constructing high-performance IVUs in a cost-effective manner. Full Article text
elo Development of an X-ray ionization beam position monitor for PAL-XFEL soft X-rays By journals.iucr.org Published On :: 2024-07-29 The Pohang Accelerator Laboratory X-ray Free-Electron Laser (PAL-XFEL) operates hard X-ray and soft X-ray beamlines for conducting scientific experiments providing intense ultrashort X-ray pulses based on the self-amplified spontaneous emission (SASE) process. The X-ray free-electron laser is characterized by strong pulse-to-pulse fluctuations resulting from the SASE process. Therefore, online photon diagnostics are very important for rigorous measurements. The concept of photo-absorption and emission using solid materials is seldom considered in soft X-ray beamline diagnostics. Instead, gas monitoring detectors, which utilize the photo-ionization of noble gas, are employed for monitoring the beam intensity. To track the beam position at the soft X-ray beamline in addition to those intensity monitors, an X-ray ionization beam position monitor (XIBPM) has been developed and characterized at the soft X-ray beamline of PAL-XFEL. The XIBPM utilizes ionization of either the residual gas in an ultra-high-vacuum environment or injected krypton gas, along with a microchannel plate with phosphor. The XIBPM was tested separately for monitoring horizontal and vertical beam positions, confirming the feasibility of tracking relative changes in beam position both on average and down to single-shot measurements. This paper presents the basic structure and test results of the newly developed non-invasive XIBPM. Full Article text
elo Development and performance simulations of a soft X-ray and XUV split-and-delay unit at beamlines FL23/24 at FLASH2 for time-resolved two-color pump–probe experiments By journals.iucr.org Published On :: 2024-08-05 The split-and-delay unit (SDU) at FLASH2 will be upgraded to enable the simultaneous operation of two temporally, spatially and spectrally separated probe beams when the free-electron laser undulators are operated in a two-color scheme. By means of suitable thin filters and an optical grating beam path a wide range of combinations of photon energies in the spectral range from 150 eV to 780 eV can be chosen. In this paper, simulations of the spectral transmission and performance parameters of the filter technique are discussed, along with a monochromator with dispersion compensation presently under construction. Full Article text
elo Development of a flat jet delivery system for soft X-ray spectroscopy at MAX IV By journals.iucr.org Published On :: 2024-08-22 One of the most challenging aspects of X-ray research is the delivery of liquid sample flows into the soft X-ray beam. Currently, cylindrical microjets are the most commonly used sample injection systems for soft X-ray liquid spectroscopy. However, they suffer from several drawbacks, such as complicated geometry due to their curved surface. In this study, we propose a novel 3D-printed nozzle design by introducing microscopic flat sheet jets that provide micrometre-thick liquid sheets with high stability, intending to make this technology more widely available to users. Our research is a collaboration between the EuXFEL and MAX IV research facilities. This collaboration aims to develop and refine a 3D-printed flat sheet nozzle design and a versatile jetting platform that is compatible with multiple endstations and measurement techniques. Our flat sheet jet platform improves the stability of the jet and increases its surface area, enabling more precise scanning and differential measurements in X-ray absorption, scattering, and imaging applications. Here, we demonstrate the performance of this new arrangement for a flat sheet jet setup with X-ray photoelectron spectroscopy, photoelectron angular distribution, and soft X-ray absorption spectroscopy experiments performed at the photoemission endstation of the FlexPES beamline at MAX IV Laboratory in Lund, Sweden. Full Article text
elo Development of an advanced in-line multilayer deposition system at Diamond Light Source By journals.iucr.org Published On :: 2024-08-09 A state-of-the-art multilayer deposition system with a 4200 mm-long linear substrate translator housed within an ultra-high vacuum chamber has been developed. This instrument is engineered to produce single and multilayer coatings, accommodating mirrors up to 2000 mm in length through the utilization of eight rectangular cathodes. To ensure the quality and reliability of the coatings, the system incorporates various diagnostic tools for in situ thickness uniformity and stress measurement. Furthermore, the system features an annealing process capable of heating up to 700°C within the load-lock chamber. The entire operation, including pump down, deposition and venting processes, is automated through user-friendly software. In addition, all essential log data, power of sputtering source, working pressure and motion positions are automatically stored for comprehensive data analysis. Preliminary commissioning results demonstrate excellent lateral film thickness uniformity, achieving 0.26% along the translation direction over 1500 mm in dynamic mode. The multilayer deposition system is poised for use in fabricating periodic, lateral-graded and depth-graded multilayers, specifically catering to the beamlines for diverse scientific applications at Diamond Light Source. Full Article text
elo Crystal clear: the impact of crystal structure in the development of high-performance organic semiconductors By journals.iucr.org Published On :: 2024-10-31 Full Article text
elo Time-series analysis of rhenium(I) organometallic covalent binding to a model protein for drug development By journals.iucr.org Published On :: 2024-04-19 Metal-based complexes with their unique chemical properties, including multiple oxidation states, radio-nuclear capabilities and various coordination geometries yield value as potential pharmaceuticals. Understanding the interactions between metals and biological systems will prove key for site-specific coordination of new metal-based lead compounds. This study merges the concepts of target coordination with fragment-based drug methodologies, supported by varying the anomalous scattering of rhenium along with infrared spectroscopy, and has identified rhenium metal sites bound covalently with two amino acid types within the model protein. A time-based series of lysozyme-rhenium-imidazole (HEWL-Re-Imi) crystals was analysed systematically over a span of 38 weeks. The main rhenium covalent coordination is observed at His15, Asp101 and Asp119. Weak (i.e. noncovalent) interactions are observed at other aspartic, asparagine, proline, tyrosine and tryptophan side chains. Detailed bond distance comparisons, including precision estimates, are reported, utilizing the diffraction precision index supplemented with small-molecule data from the Cambridge Structural Database. Key findings include changes in the protein structure induced at the rhenium metal binding site, not observed in similar metal-free structures. The binding sites are typically found along the solvent-channel-accessible protein surface. The three primary covalent metal binding sites are consistent throughout the time series, whereas binding to neighbouring amino acid residues changes through the time series. Co-crystallization was used, consistently yielding crystals four days after setup. After crystal formation, soaking of the compound into the crystal over 38 weeks is continued and explains these structural adjustments. It is the covalent bond stability at the three sites, their proximity to the solvent channel and the movement of residues to accommodate the metal that are important, and may prove useful for future radiopharmaceutical development including target modification. Full Article text
elo Biophysical and structural study of La Crosse virus endonuclease inhibition for the development of new antiviral options By journals.iucr.org Published On :: 2024-04-24 The large Bunyavirales order includes several families of viruses with a segmented ambisense (−) RNA genome and a cytoplasmic life cycle that starts by synthesizing viral mRNA. The initiation of transcription, which is common to all members, relies on an endonuclease activity that is responsible for cap-snatching. In La Crosse virus, an orthobunyavirus, it has previously been shown that the cap-snatching endonuclease resides in the N-terminal domain of the L protein. Orthobunyaviruses are transmitted by arthropods and cause diseases in cattle. However, California encephalitis virus, La Crosse virus and Jamestown Canyon virus are North American species that can cause encephalitis in humans. No vaccines or antiviral drugs are available. In this study, three known Influenza virus endonuclease inhibitors (DPBA, L-742,001 and baloxavir) were repurposed on the La Crosse virus endonuclease. Their inhibition was evaluated by fluorescence resonance energy transfer and their mode of binding was then assessed by differential scanning fluorimetry and microscale thermophoresis. Finally, two crystallographic structures were obtained in complex with L-742,001 and baloxavir, providing access to the structural determinants of inhibition and offering key information for the further development of Bunyavirales endonuclease inhibitors. Full Article text
elo 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
elo Current developments and trends in quantum crystallography By journals.iucr.org Published On :: 2024-06-18 Quantum crystallography is an emerging research field of science that has its origin in the early days of quantum physics and modern crystallography when it was almost immediately envisaged that X-ray radiation could be somehow exploited to determine the electron distribution of atoms and molecules. Today it can be seen as a composite research area at the intersection of crystallography, quantum chemistry, solid-state physics, applied mathematics and computer science, with the goal of investigating quantum problems, phenomena and features of the crystalline state. In this article, the state-of-the-art of quantum crystallography will be described by presenting developments and applications of novel techniques that have been introduced in the last 15 years. The focus will be on advances in the framework of multipole model strategies, wavefunction-/density matrix-based approaches and quantum chemical topological techniques. Finally, possible future improvements and expansions in the field will be discussed, also considering new emerging experimental and computational technologies. Full Article text
elo Development of MHz X-ray phase contrast imaging at the European XFEL By journals.iucr.org Published On :: The development of instrumentation as well as applications for megahertz X-ray phase contrast imaging at the Single Particles, Clusters, and Biomolecules and Serial Femtosecond Crystallography instrument of the European XFEL are introduced here. Full Article text
elo Development and testing of a dual-frequency, real-time hardware feedback system for the hard X-ray nanoprobe beamline of the SSRF By journals.iucr.org Published On :: we introduce a novel approach for a real-time dual-frequency feedback system, which has been firstly used at the hard X-ray nanoprobe beamline of SSRF. The BiBEST can then efficiently stabilize X-ray beam position and stability in parallel, making use of different optical systems in the beamline. Full Article text
elo BioXTAS RAW 2: new developments for a free open-source program for small-angle scattering data reduction and analysis By journals.iucr.org Published On :: 2024-02-01 BioXTAS RAW is a free open-source program for reduction, analysis and modelling of biological small-angle scattering data. Here, the new developments in RAW version 2 are described. These include improved data reduction using pyFAI; updated automated Guinier fitting and Dmax finding algorithms; automated series (e.g. size-exclusion chromatography coupled small-angle X-ray scattering or SEC-SAXS) buffer- and sample-region finding algorithms; linear and integral baseline correction for series; deconvolution of series data using regularized alternating least squares (REGALS); creation of electron-density reconstructions using electron density via solution scattering (DENSS); a comparison window showing residuals, ratios and statistical comparisons between profiles; and generation of PDF reports with summary plots and tables for all analysis. Furthermore, there is now a RAW API, which can be used without the graphical user interface (GUI), providing full access to all of the functionality found in the GUI. In addition to these new capabilities, RAW has undergone significant technical updates, such as adding Python 3 compatibility, and has entirely new documentation available both online and in the program. Full Article text
elo Determination of the average crystallite size and the crystallite size distribution: the envelope function approach EnvACS By journals.iucr.org Published On :: 2024-09-17 A procedure is presented to exactly obtain the apparent average crystallite size (ACS) of powder samples using standard in-house powder diffraction experiments without any restriction originating from the Scherrer equation. Additionally, the crystallite size distribution within the sample can be evaluated. To achieve this, powder diffractograms are background corrected and long-range radial distribution functions G(r) up to 300 nm are calculated from the diffraction data. The envelope function fenv of G(r) is approximated by a procedure determining the absolute maxima of G(r) in a certain interval (r range). Fitting of an ACS distribution envelope function to this approximation gives the ACS and its distribution. The method is tested on diffractograms of LaB6 standard reference materials measured with different wavelengths to demonstrate the validity of the approach and to clarify the influence of the wavelength used. The latter results in a general description of the maximum observable average crystallite size, which depends on the instrument and wavelength used. The crystallite site distribution is compared with particle size distributions based on transmission electron microscopy investigations, providing an approximation of the average number of crystallites per particle. Full Article text
elo Development of crystal optics for X-ray multi-projection imaging for synchrotron and XFEL sources By journals.iucr.org Published On :: 2024-10-21 X-ray multi-projection imaging (XMPI) is an emerging experimental technique for the acquisition of rotation-free, time-resolved, volumetric information on stochastic processes. The technique is developed for high-brilliance light-source facilities, aiming to address known limitations of state-of-the-art imaging methods in the acquisition of 4D sample information, linked to their need for sample rotation. XMPI relies on a beam-splitting scheme, that illuminates a sample from multiple, angularly spaced viewpoints, and employs fast, indirect, X-ray imaging detectors for the collection of the data. This approach enables studies of previously inaccessible phenomena of industrial and societal relevance such as fractures in solids, propagation of shock waves, laser-based 3D printing, or even fast processes in the biological domain. In this work, we discuss in detail the beam-splitting scheme of XMPI. More specifically, we explore the relevant properties of X-ray splitter optics for their use in XMPI schemes, both at synchrotron insertion devices and XFEL facilities. Furthermore, we describe two distinct XMPI schemes, designed to faciliate large samples and complex sample environments. Finally, we present experimental proof of the feasibility of MHz-rate XMPI at the European XFEL. This detailed overview aims to state the challenges and the potential of XMPI and act as a stepping stone for future development of the technique. Full Article text
elo X-ray ghost imaging with a specially developed beam splitter By journals.iucr.org Published On :: 2024-09-30 X-ray ghost imaging with a crystal beam splitter has advantages in highly efficient imaging due to the simultaneous acquisition of signals from both the object beam and reference beam. However, beam splitting with a large field of view, uniform distribution and high correlation has been a great challenge up to now. Therefore, a dedicated beam splitter has been developed by optimizing the optical layout of a synchrotron radiation beamline and the fabrication process of a Laue crystal. A large field of view, consistent size, uniform intensity distribution and high correlation were obtained simultaneously for the two split beams. Modulated by a piece of copper foam upstream of the splitter, a correlation of 92% between the speckle fields of the object and reference beam and a Glauber function of 1.25 were achieved. Taking advantage of synthetic aperture X-ray ghost imaging (SAXGI), a circuit board of size 880 × 330 pixels was successfully imaged with high fidelity. In addition, even though 16 measurements corresponding to a sampling rate of 1% in SAXGI were used for image reconstruction, the skeleton structure of the circuit board can still be determined. In conclusion, the specially developed beam splitter is applicable for the efficient implementation of X-ray ghost imaging. Full Article text
elo Development of hard X-ray photoelectron spectroscopy in liquid cells using optimized microfabricated silicon nitride membranes By journals.iucr.org Published On :: 2024-10-15 We present first hard X-ray photoelectron spectroscopy (HAXPES) results of aqueous salt solutions and dispersions of gold nanoparticles in liquid cells equipped with specially designed microfabricated thin silicon nitride membranes, with thickness in the 15–25 nm range, mounted in a high-vacuum-compatible environment. The experiments have been performed at the HAXPES endstation of the GALAXIES beamline at the SOLEIL synchrotron radiation facility. The low-stress membranes are fabricated from 100 mm silicon wafers using standard lithography techniques. Platinum alignment marks are added to the chips hosting the membranes to facilitate the positioning of the X-ray beam on the membrane by detecting the corresponding photoemission lines. Two types of liquid cells have been used, a static one built on an Omicron-type sample holder with the liquid confined in the cell container, and a circulating liquid cell, in which the liquid can flow in order to mitigate the effects due to beam damage. We demonstrate that the membranes are mechanically robust and able to withstand 1 bar pressure difference between the liquid inside the cell and vacuum, and the intense synchrotron radiation beam during data acquisition. This opens up new opportunities for spectroscopic studies of liquids. Full Article text
elo Mirakl partners with Mangopay to accelerate development of European marketplaces By thepaypers.com Published On :: Tue, 12 Nov 2024 13:09:00 +0100 Mirakl has announced its partnership with Full Article
elo Searching for Ruth Batchelor: founder of the LA Film Critics Association By www.scpr.org Published On :: Fri, 23 Jun 2017 08:20:48 -0700 The back cover photo splash from Ruth Batchelor's album "Songs for Women's Liberation: Reviving a Dream"; Credit: R. H. Greene | Off-Ramp®I’ve been a member of the LA Film Critics Association since 1999. LAFCA is a good group - collegial and filled with real movie lovers. But it has a problem. It's a professional organization, meaning a baseline for membership is you have to have a job, and film criticism is overwhelmingly white and male. 78 percent of the top critics listed on RottenTomatoes are male, and women write only 18 percent of the major reviews. So LAFCA is like the profession itself: overwhelmingly a platform for white men. It's trying to diversify. It has been for years. But how do you do that when the pool you draw from has a huge institutional bias? According to film critic Claudia Puig, "Criticism has been a white male dominated field for very long. And it continues to be. And not just white males, but middle aged." Claudia is the current LAFCA president - and a legendary critic, who wrote lead reviews for 14 years at USA Today, and now appears regularly on KPCC’s Film Week. "Very few movies pass the Bechdel Test. Women are often just girlfriends, wives, mothers. They don't get to have a story arc of their own. But if you had more women reviewing these movies, they would point out certain things that people might not notice as potentially offensive. Because we have been harassed, or we have experienced any number of things. It's something I've grappled with through my entire career." - Claudia Puig I'm on a committee with Claudia for the LA Film Critics. The concept is to mentor young writers - to generate diversity, from the ground up. One idea is to have a scholarship for aspiring female film critics. We thought it would be good to name it after a prominent woman from the group's past. So I went to Myron Meisel, who joined LAFCA in 1979, just four years after it formed, and I asked him, "Is there a woman you can think of who played an especially prominent role in the history of the LA Film Critics Association?" "Oh!," Myron said. "Ruth Batchelor was the founder and driving force..." "Wait, what?" I asked. "LAFCA was founded by a woman?" "We weren't shocked. You had Ruth, who was very much concerned with creating a Los Angeles equivalent to the New York Film Critics Association. Which she largely pulled together by force of will. While Ruth was the moving force, you really can't discount her ability to martial the enthusiastic support of Charles Champlin as a co-founder, and the imprimatur of the Los Angeles Times behind him. Ruth had an enviable ability to make everything she undertook seem inevitable." - Myron Meisel It's poignant, isn't it? And a little creepy. A prestigious group commits to gender diversity, and somehow, it doesn't have the institutional memory to know that the pivotal figure in its history was a woman. How could we forget Ruth? Batchelor was nothing if not memorable. Before she became a pundit, she was a successful pop songwriter in the style of Neil Sedaka, or Goffin and King. She wrote dozens of songs, recorded by everybody from Phil Spector to the Partridge Family. She wrote Elvis Presley numbers, including "Cotton Candy Land," which might be the most hated track in the Presley catalogue. But Batchelor also wrote "Where Do You Come From?", which is beautiful. Elvis Presley performing Ruth Batchelor's "Where do you come from?" Where do you come from, Ruth? It wasn't easy to find out. Batchelor's New York Times obituary was full of false leads. It said she was a critic for National Public Radio. She wasn't, but when NPR searched their archives, they unearthed a lead: a Film Comment article from 1982, where Batchelor is described as "Ruth Batchelor of National Public Radio's 'As it Happens.'" "As It Happens" airs on Canada's CBC. So I placed a call. And I waited. Meanwhile, I found a blog post about Batchelor as a songwriter on an excellent site called "Zero to 180 - 3 Minute Magic." The title of the post was riveting: "First 'Women's Liberation LP.'" It turns out in 1971, Ruth Batchelor self-produced and financed a concept album called "Songs for Women's Liberation: Reviving a Dream." Myron Meisel told me about Ruth's earthy sense of humor, and it's right there in the first write-up's, where her working title is "A Quarter for the Ladies Room." A Billboard article from August 1971 quotes Batchelor about the album: "Right now I have an album of dirty Women's Liberation poems recorded, and I'm trying to sell the master." Then she laughs. "The last record company I recorded for folded." Batchelor shopped her record. There were no takers. But Batchelor proved unstoppable. She created her own record company and called it Femme Records. Then she put out what the leftist journal Broadside called "the first feminist record album," all by herself. "Reviving a Dream" is forgotten, bordering on lost. It's never been available for streaming, or released on CD. Batchelor's record is a pastiche of radio styles from her era. There's Joan Baez folk, two drawling country laments, even some call and response stuff Batchelor probably learned from Phil Spector and his girl groups. Are Batchelor's songs any good? They're amazing. Amazing just because they exist. She fits into the churning sea of anonymous faces so seamlessly it takes awhile to realize: She's Ruth Batchelor. The woman who founded the LA Film Critics. A group currently struggling with gender diversity. LAFCA prez Claudia Puig agreed to an interview knowing it had to do with LAFCA, but not what it was about. I played her Batchelor's song "Drop the Mop." Batchelor intended it as an anthem, scored to a tempo of marching feet. The listen was awkward - like force feeding a roommate your iTunes playlist. Claudia took notes the whole time, to occupy her critical mind, but I could see when it ended that she was moved. "Yeah, it's a really interesting song," Claudia said. "My reaction is sort of...ummm..." Claudia hesitated, looking for words. "And this was the origin of the group. Yeah. It really kind of... It is really interesting. I'd never heard of her. She was right there, fighting that fight." "And here, we were looking for an avatar," I said. "Right. Right. It means something. This is a really important discovery that you made." A piece of the portrait was missing - an essential one. It came courtesy of Kevin Robertson, a producer for "As It Happens" at the CBC. Batchelor had been the show's "Hollywood Correspondent" in the early 1980s. There was audio in the archives. Kevin provided me with five MP3s. Batchelor's CBC brand was gender traditional. She was the tinseltown gadfly, a niche created by Hedda Hopper and Louella Parsons in the 1930s. There was gossip about Burt Reynolds and Loni Anderson. Richard Burton's widow. Marvin Hamlisch. TV's "Gomer Pyle." It was kitsch heaven, so I wasn't disappointed. Not exactly. But it was still a bit like listening to Wonder Woman try to be ordinary, because hey, we all gotta eat. Ruth Batchelor's "Mr. Principal" The LA Film Critics get a cameo in Batchelor's Oscar season broadcast, when she mentions her LAFCA Awards vote. For awhile, I thought that would be the only audio connecting the "As It Happens" Ruth Batchelor to the feminist fireball she wanted to be. Then Batchelor starts riffing on "Partners," a buddy cop farce about a straight cop who goes undercover as a gay man. The film had sparked protests from the gay community. Batchelor is unsympathetic, which is surprising in a civil rights pioneer. Her reasoning is devastating. "You know if women got angry every time there was a movie against women," Batchelor says, "there wouldn't be any movies." Batchelor died of cancer early - she was just 58. 25 years later, men still direct most mainstream movies - 93 percent as of 2015. They have 70 percent of the speaking parts, and play 88 percent of the leads. While women get to be naked twice as often in American movies. Men review almost all movies too. Maybe that's why Ruth Batchelor founded the LA Film Critics. Because she lived in that world. She covered it. Spoke to it. Fought hard against it. And then left behind a hidden legacy. "She is our avatar," Claudia says, as our interview time runs out. "It sort of makes me want to redouble our efforts to honor her spirit." This content is from Southern California Public Radio. 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