rem Pro-life leaders react to Trump victory: 'Clear rejection of extreme abortion agenda' By www.christianpost.com Published On :: Fri, 08 Nov 2024 08:25:56 -0500 Leaders of pro-life advocacy groups are celebrating former President Donald Trump’s victory in the 2024 presidential election, citing his win as evidence that the American people do not support the unfettered abortion access endorsed by the Democrats. Full Article
rem Christian counselor asks Supreme Court to block Colorado’s 'gay conversion therapy' ban By www.christianpost.com Published On :: Tue, 12 Nov 2024 10:40:00 -0500 A Christian counselor is asking the U.S. Supreme Court to block enforcement of a Colorado law that regulates what licensed professionals can say while discussing unwanted same-sex attractions with clients, arguing that the state government censors speech it disfavors. Full Article
rem Workshop 28: Supreme Court Justice Stephen Breyer By audioboom.com Published On :: Wed, 05 Oct 2016 10:00:00 -0000 Legal decisions are rarely read for pleasure. And though read and re-read and excerpted and quoted, they are not always quotable. Clocking in at an average of just under 5000 words, they can sound jargony, pompous and bone-dry in the wrong hands. Today's 10-Minute Writers Workshop asks an Associate Justice of the Supreme Court of the United States about what goes into writing an opinion. Justice Stephen Breyer was appointed to the Supreme Court in 1994 and is an exuberant advocate for participatory democracy, animated explainer of the reasoning behind decisions and author of several books. I spoke with Justice Breyer in the green room at The Music Hall in Portsmouth, New Hampshire, just before talking with him about his most recent, The Court and the World - American Law and the New Global Realities for Writers On A New England Stage. Learn more about your ad choices. Visit podcastchoices.com/adchoices Full Article
rem conditions and requirements: By classical-music-online.webnode.page Published On :: Fri, 16 Aug 2013 10:43:00 +0200 Have the opportunity to download free sound files in "Products" , but to get the musical material they require registration fen.She required to have at Vip Account whose year value is 50 euros. Full Article News
rem Color Therapy: Everyday Remedies By english.pravda.ru Published On :: Mon, 06 Jun 2022 03:08:00 +0300 Experiments with colors are very interesting and useful Pensioner Valentina Aleksina from Moscow is a real enthusiast; she is an expert in color therapy. The woman believes that the color with which a person contacts can influence his state of health and spirits. But how is it possible? Ancient healers of the East believed that color had the unique capability of healing people's bodies and souls. The medicines of Ancient India, China, Egypt, Laos and other eastern countries had a trend called ra-therapy which cured people with the help of the rainbow colors. The ancient wise were not Orthodox and believed that energetic peculiarities of each person are unique. This in its turn means that each person has colors and shades that are particularly favorable for him. The ancient wise men made up a reasonable system revealing the influence of different colors upon the human organism; the system is based upon the individual properties of each color. Full Article Health
rem Kremlin: Russia is not confronting Americans. Russia is confronting their ideology By english.pravda.ru Published On :: Fri, 17 Nov 2023 14:00:00 +0300 Kremlin's official spokesman Dmitry Peskov gave an interview to the MGIMO 360 news channel, in which he answered questions about the presidential election, Russia's nuclear rhetoric and enemies. According to Peskov, Russia's next president should be "the same as [Vladimir] Putin… or different, but the same." "Putin has not announced his intention to run. But I sincerely want to believe that he will do it. I have no doubt that he will win the election, I have no doubt that he will continue to be our president. We'll see," Peskov said. Full Article Russia
rem Iconic monument to be removed from Moscow's Red Square By english.pravda.ru Published On :: Fri, 31 Aug 2018 13:03:00 +0300 The State Historical Museum and the Russian Historical Society announced the all-Russian campaign to raise funds to restore the monument to Kuzma Minin and Prince Dmitry Pozharsky. The iconic monument, commonly known as Monument to Minin and Pozharsky, stands in front of the St. Bazil's Cathedral on Moscow's Red Square. The monument was the first sculptural piece that was erected in Moscow on Red Square 200 years ago in honour of the victory of the Russian militia over foreign interventionists in 1612.On February 20, 1818 in a solemn atmosphere, Emperor Alexander I and members of the imperial family unveiled the Monument to Minin and Pozharsky on Red Square. In the summer of 1931, the monument became a hindrance to demonstrations and parades, so it was moved from its historical site, from opposite the Upper trading rows, to the facade of the Intercession Cathedral. During this movement, the structure of the monument was damaged.In late 2016, the maintenance of the monument was delivered to the State Historical Museum. Experts examined the monument and came to conclusion that it required serious restoration is required. The works were preliminary evaluated at 46 million rubles.Within a year, the sculptural group will be dismantled from the pedestal on Red Square to be transported to workshops, where the sculptures and the bas-reliefs of the monument will be restored. Full Article History traditions
rem Kamila Valieva's doping test still remains a mystery to all By english.pravda.ru Published On :: Wed, 16 Feb 2022 14:46:00 +0300 Kamila Valieva's doping test revealed the presence of three substances to improve the heart function, the US Anti-Doping Agency (USADA) said. According to The New York Times, these drugs can be aimed at increasing endurance, if used in combination. According to USADA's chief Travis Tygart, Kamila Valieva's doping test revealed the presence of trimetazidine, L-carnitine and hypoxen. Of these three drugs, it is only trimetazidine that is included in the list of drugs prohibited for athletes. "It's a trifecta of substances — two of which are allowed, and one that is not allowed. The benefits of such a combination "seem to be aimed at increasing endurance, reducing fatigue and promoting greater efficiency in using oxygen," Travis Tygart said. Full Article Sport
rem Conor McGregor calls Islam Makhachev 'gombeen' for his UFC remarks By english.pravda.ru Published On :: Thu, 19 Oct 2023 14:04:00 +0300 Jon Jones, US champion of the Ultimate Fighting Championship (UFC) responded to Russian mixed martial arts (MMA) fighter Islam Makhachev, who criticised promotion's ratings. "Heavy is the head that wears the crown. Criticism comes with territory. I want to encourage the young fighters to beat some of my records instead of using their lips. Now thats gangsta,” Jones wrote in a message posted on social media. Jones is the current UFC heavyweight champion. He tops the ranking of the promotion's best fighters regardless of weight categories (P4P). During his career, the fighter won 27 victories and suffered one loss. Another fight with his participation was declared invalid. Full Article Sport
rem Putin celebrates his 72nd birthday working in the Kremlin By english.pravda.ru Published On :: Mon, 07 Oct 2024 16:03:00 +0300 Russian President Vladimir Putin celebrates his 72nd birthday on October 7. The politician is expected to spend the day working. The head of Chechnya Ramzan Kadyrov was one of the first to congratulate the Russian leader. He wished him good health, prosperity, happiness, long life, good luck and success in his difficult work. As the press secretary of the Russian leader Dmitry Peskov said, Putin will spend his birthday working. Full Article Russia
rem Putin takes part in ceremony to launch new nuclear icebreaker By english.pravda.ru Published On :: Wed, 06 Nov 2024 17:18:00 +0300 Russian President Vladimir Putin took part in the ceremony to launch the Chukotka nuclear icebreaker built at the Baltic Shipyard in St. Petersburg. Putin participated from Moscow via video link. The footage shows the head of state giving the command "Launch cleared!" A bottle of champagne was traditionally smashed against the side of the vessel before launch. Three best workers of the Baltic Shipyard cut the detent that secured the ship to the land. The multi-ton vessel then slowly slid along the rails into the water. Full Article Russia
rem Designated Doctor Case-Based Webinar Series: Module 4 - Lower Extremity MMI and IR By www.tdi.texas.gov Published On :: Wed, 09 Apr 2025 17:00:00 GMT Designated Doctor Case-Based Webinar Series: Module 4 - Lower Extremity MMI and IR Full Article
rem Designated Doctor Case-Based Webinar Series: Module 3 - Upper Extremity MMI and IR By www.tdi.texas.gov Published On :: Mon, 07 Apr 2025 17:00:00 GMT Designated Doctor Case-Based Webinar Series: Module 3 - Upper Extremity MMI and IR Full Article
rem Docket No. 2851 - Consideration of a Request to Change the Title Insurance Basic Premium Rates By www.tdi.texas.gov Published On :: Tue, 21 Jan 2025 20:00:00 GMT TLTA's petition to change basic title rates Full Article
rem Tech experts reveal how to stop your phone from overheating, including removing your phone case By www.retailtechnologyreview.com Published On :: With the UK facing the hot temperatures, many of us will be wondering how to protect tech items from overheating and facing long lasting damage. Full Article Mobile Computers Critical Issues
rem New Forter report finds UK consumer ‘Trust Premium’ rises, but checkout friction and unfriendly policies are costing British retailers By www.retailtechnologyreview.com Published On :: Forter, the Trust Platform for digital commerce, has released findings from its 2024 Consumer Trust Premium Report, which explores the evolving relationship between consumer shopping habits and brand trust, based on 2,000 survey respondents in the US and UK. Full Article Internet Retailing Retail Supply Chain Critical Issues
rem Kremlin explains Putin's decision to cancel nationalisation of Danone By english.pravda.ru Published On :: Thu, 14 Mar 2024 15:51:00 +0300 The Russian authorities lifted temporary state management from the assets of French food giant Danone in Russia. The decision was made for reasons of expediency, Kremlin's official spokesman Dmitry Peskov said. On March 13, Russian President Vladimir Putin signed a decree to cancel the nationalisation of Danone's business and its transfer to Russia's Federal Property Management Agency. According to Peskov, all factors and conditions need to be weighed accordingly in every situation like this. Therefore, it does not mean that the Russian leadership will make similar decisions in relation to other foreign companies. Full Article Business
rem Over the next 10 years, the market for 3D printing powder will expand tremendously. By www.retailtechnologyreview.com Published On :: According to a report from Adroit Market Research, 3D printing powder market is projected to grow at a CAGR of 26.6% between 2021 and 2031. Full Article Critical Issues Print and Label
rem Ukraine's Kursk operation failure will lead to tremendous consequences By english.pravda.ru Published On :: Wed, 14 Aug 2024 18:35:00 +0300 The Ukrainian Foreign Ministry stated that Kyiv was not interested in appropriating the territories of the Kursk region of Russia. This means that the march of the Ukrainian Armed Forces "to Kursk and Voronezh" is over with. "Ukraine is not interested in appropriating the territories of the Kursk region" — Ukrainian Foreign Ministry 'Ukraine does not need what is foreign' Ukrainian Foreign Ministry spokesman Georgy Tykhy said that the offensive of the Ukrainian Armed Forces in the Kursk region was needed "to protect the lives of our people" rather than to capture Russian territories. Full Article Incidents
rem Kremlin: Russia continues fighting By english.pravda.ru Published On :: Mon, 11 Nov 2024 15:56:00 +0300 Russia will continue military operations if Western countries let the Armed Forces of Ukraine to strike deep into the country, Kremlin's official spokesman Dmitry Peskov said, TASS reports. "This once again demonstrates that European leaders (…) continue to seek the strategic defeat of the Russian Federation. We, in turn, continue the special military operation until all set goals are achieved," the Kremlin representative said. Sending any new types of weapons to Ukraine will not let Kyiv take an advantage of the situation on the front, Peskov added. Full Article World
rem Ukrainian truck driver killed in Germany for his remarks about Putin By english.pravda.ru Published On :: Mon, 11 Nov 2024 20:42:00 +0300 A Ukrainian truck driver was killed in Germany because of his words about Russian President Vladimir Putin, Bild wrote. "During a fight on a parking lot in front of a sawmill in Oberroth [in the federal state of Baden-Württemberg], three truck drivers apparently killed a colleague of theirs on Saturday evening at around 8:15 p.m. They were arguing about Russia's role in the conflict in Ukraine,” the newspaper said. The Ukrainian citizen was 34 years old. The men were drinking alcoholic beverages at the time when the incident occurred. The police detained three of his colleagues, each of whom is suspected of the murder. One of them is a citizen of Uzbekistan, two others are from Eastern European countries. Full Article Society
rem Itaewon Tragedy Remembered Nationwide on Second Anniversary By world.kbs.co.kr Published On :: Tue, 29 Oct 2024 16:39:14 +0900 [Domestic] : Memorial events are taking place across the country to honor the victims of the Itaewon crowd crush on Tuesday, the second anniversary of the tragedy. Earlier in the day, a memorial event at the National Assembly brought together survivors, members of the bereaved families, the National Assembly ...[more...] Full Article Domestic
rem Annual 'Turn Toward Busan' Ceremony Held to Honor UN Troops during Korean War By world.kbs.co.kr Published On :: Mon, 11 Nov 2024 15:40:08 +0900 [Domestic] : An annual commemorative ceremony honoring the sacrifices of United Nations Forces during the Korean War was held on Monday at the UN Memorial Cemetery in the southeastern port city of Busan. This year's "Turn Toward Busan" event began with a burial of an unknown soldier of the UN Forces, whose remains were ...[more...] Full Article Domestic
rem World Asked to ‘Turn toward Busan’ to Remember UN Korean War Veterans By world.kbs.co.kr Published On :: Mon, 11 Nov 2024 17:23:38 +0900 [Domestic] : Anchor: On Monday at 11 a.m., the world was asked to “Turn toward Busan,” where Korean War veterans gathered at the United Nations Memorial Cemetery of Korea to honor the fallen soldiers who fought under the UN flag. The annual event in South Korea’s southern port city drew some 800 people, including ...[more...] Full Article Domestic
rem 2024 Paris Paralympics Ends with Closing Ceremony By world.kbs.co.kr Published On :: Mon, 09 Sep 2024 10:42:05 +0900 [Sports] : The 2024 Paris Paralympics came to a close on Sunday after a 12-day run. The global sports festival wrapped up Sunday night with a glitzy closing ceremony at the Stade de France in Saint-Denis, near Paris. About 44-hundred athletes with disabilities competed in 22 sporting events, representing 169 ...[more...] Full Article Sports
rem Son Heung-min Earns First Two Assists of Season in Premier League Win By world.kbs.co.kr Published On :: Sun, 22 Sep 2024 12:19:36 +0900 [Sports] : South Korean forward Son Heung-min of the Tottenham Hotspur has picked up his first two assists of the season, helping his club with the second win of the season. Son set up Brennan Johnson's 28th-minute goal in a match against Brentford on Saturday at Tottenham Hotspur Stadium in London, breaking ...[more...] Full Article Sports
rem Why the V Engine Remains a Top Choice for Car Enthusiasts By auto.howstuffworks.com Published On :: Fri, 18 Oct 2024 10:05:02 -0400 The V engine has been a favorite among car lovers for many years. Known for its unique design and powerful performance, it is the engine of choice for many vehicles today. Full Article
rem How to Remove Deodorant Stains From Clothing By home.howstuffworks.com Published On :: Tue, 23 Jan 2024 17:35:32 -0500 You've noticed that your deodorant leaves stains on your shirt and you don't know how to take the deodorant out of your clothing. Well have no fear, you're at the right spot to learn how. Full Article
rem Astro's Jinjin drops new single in remembrance of Moonbin By world.kbs.co.kr Published On :: 2024-04-22 Jinjin of Astro has dropped a single in remembrance of bandmate Moonbin who passed away one year ago.The digital single “Fly”, which features Moonbin’s voice, was co-written by the two members of...[more...] Full Article
rem Improving the reliability of small- and wide-angle X-ray scattering measurements of anisotropic precipitates in metallic alloys using sample rotation By journals.iucr.org Published On :: Rotations of small- and wide-angle X-ray scattering samples during acquisition are shown to give a drastic improvement in the reliability of the characterization of anisotropic precipitates in metallic alloys. Full Article text
rem Characterization and calibration of DECTRIS PILATUS3 X CdTe 2M high-Z hybrid pixel detector for high-precision powder diffraction measurements By journals.iucr.org Published On :: The performance of a high-Z photon-counting detector for powder diffraction measurements at high (>50 keV) energies is characterized, and the appropriate corrections are described in order to obtain data of higher quality than have previously been obtained from 2D detectors in these energy ranges. Full Article text
rem High accuracy, high resolution measurements of fluorescence in manganese using extended-range high-energy-resolution fluorescence detection By journals.iucr.org Published On :: We explain analysis of RIXS, HERFD and XR-HERFD data to discover new physical processes in manganese and manganese-containing materials, by applying our new technique XR-HERFD, developed from high resolution RIXS and HERFD. Full Article text
rem Improving the reliability of small- and wide-angle X-ray scattering measurements of anisotropic precipitates in metallic alloys using sample rotation By journals.iucr.org Published On :: 2024-11-04 Nanometric precipitates in metallic alloys often have highly anisotropic shapes. Given the large grain size and non-random texture typical of these alloys, performing small- and wide-angle X-ray scattering (SAXS/WAXS) measurements on such samples for determining their characteristics (typically size and volume fraction) results in highly anisotropic and irreproducible data. Rotations of flat samples during SAXS/WAXS acquisitions are presented here as a solution to these anisotropy issues. Two aluminium alloys containing anisotropic precipitates are used as examples to validate the approach with a −45°/45° angular range. Clear improvements can be seen on the SAXS I(q) fitting and the consistency between the different SAXS/WAXS measurements. This methodology results in more reliable measurements of the precipitate's characteristics, and thus allows for time- and space-resolved measurements with higher accuracy. Full Article text
rem Treatment of multiple-beam X-ray diffraction in energy-dependent measurements By journals.iucr.org Published On :: 2024-01-01 During X-ray diffraction experiments on single crystals, the diffracted beam intensities may be affected by multiple-beam X-ray diffraction (MBD). This effect is particularly frequent at higher X-ray energies and for larger unit cells. The appearance of this so-called Renninger effect often impairs the interpretation of diffracted intensities. This applies in particular to energy spectra analysed in resonant experiments, since during scans of the incident photon energy these conditions are necessarily met for specific X-ray energies. This effect can be addressed by carefully avoiding multiple-beam reflection conditions at a given X-ray energy and a given position in reciprocal space. However, areas which are (nearly) free of MBD are not always available. This article presents a universal concept of data acquisition and post-processing for resonant X-ray diffraction experiments. Our concept facilitates the reliable determination of kinematic (MBD-free) resonant diffraction intensities even at relatively high energies which, in turn, enables the study of higher absorption edges. This way, the applicability of resonant diffraction, e.g. to reveal the local atomic and electronic structure or chemical environment, is extended for a vast majority of crystalline materials. The potential of this approach compared with conventional data reduction is demonstrated by the measurements of the Ta L3 edge of well studied lithium tantalate LiTaO3. Full Article text
rem Submillisecond in situ X-ray diffraction measurement system with changing temperature and pressure using diamond anvil cells at BL10XU/SPring-8 By journals.iucr.org Published On :: 2024-02-19 Recently, there has been a high demand for elucidating kinetics and visualizing reaction processes under extreme dynamic conditions, such as chemical reactions under meteorite impact conditions, structural changes under nonequilibrium conditions, and in situ observations of dynamic changes. To accelerate material science studies and Earth science fields under dynamic conditions, a submillisecond in situ X-ray diffraction measurement system has been developed using a diamond anvil cell to observe reaction processes under rapidly changing pressure and temperature conditions replicating extreme dynamic conditions. The development and measurements were performed at the high-pressure beamline BL10XU/SPring-8 by synchronizing a high-speed hybrid pixel array detector, laser heating and temperature measurement system, and gas-pressure control system that enables remote and rapid pressure changes using the diamond anvil cell. The synchronized system enabled momentary heating and rapid cooling experiments up to 5000 K via laser heating as well as the visualization of structural changes in high-pressure samples under extreme dynamic conditions during high-speed pressure changes. Full Article text
rem Novel correction procedure for compensating thermal contraction errors in the measurement of the magnetic field of superconducting undulator coils in a liquid helium cryostat By journals.iucr.org Published On :: 2024-02-22 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. Full Article text
rem A sub-100 nm thickness flat jet for extreme ultraviolet to soft X-ray absorption spectroscopy By journals.iucr.org Published On :: 2024-04-09 Experimental characterization of the structural, electronic and dynamic properties of dilute systems in aqueous solvents, such as nanoparticles, molecules and proteins, are nowadays an open challenge. X-ray absorption spectroscopy (XAS) is probably one of the most established approaches to this aim as it is element-specific. However, typical dilute systems of interest are often composed of light elements that require extreme-ultraviolet to soft X-ray photons. In this spectral regime, water and other solvents are rather opaque, thus demanding radical reduction of the solvent volume and removal of the liquid to minimize background absorption. Here, we present an experimental endstation designed to operate a liquid flat jet of sub-micrometre thickness in a vacuum environment compatible with extreme ultraviolet/soft XAS measurements in transmission geometry. The apparatus developed can be easily connected to synchrotron and free-electron-laser user-facility beamlines dedicated to XAS experiments. The conditions for stable generation and control of the liquid flat jet are analyzed and discussed. Preliminary soft XAS measurements on some test solutions are shown. Full Article text
rem Iterative Bragg peak removal on X-ray absorption spectra with automatic intensity correction By journals.iucr.org Published On :: 2024-04-09 This study introduces a novel iterative Bragg peak removal with automatic intensity correction (IBR-AIC) methodology for X-ray absorption spectroscopy (XAS), specifically addressing the challenge of Bragg peak interference in the analysis of crystalline materials. The approach integrates experimental adjustments and sophisticated post-processing, including an iterative algorithm for robust calculation of the scaling factor of the absorption coefficients and efficient elimination of the Bragg peaks, a common obstacle in accurately interpreting XAS data, particularly in crystalline samples. The method was thoroughly evaluated on dilute catalysts and thin films, with fluorescence mode and large-angle rotation. The results underscore the technique's effectiveness, adaptability and substantial potential in improving the precision of XAS data analysis. While demonstrating significant promise, the method does have limitations related to signal-to-noise ratio sensitivity and the necessity for meticulous angle selection during experimentation. Overall, IBR-AIC represents a significant advancement in XAS, offering a pragmatic solution to Bragg peak contamination challenges, thereby expanding the applications of XAS in understanding complex materials under diverse experimental conditions. Full Article text
rem Self-calibration strategies for reducing systematic slope measurement errors of autocollimators in deflectometric profilometry By journals.iucr.org Published On :: 2024-06-05 Deflectometric profilometers are used to precisely measure the form of beam shaping optics of synchrotrons and X-ray free-electron lasers. They often utilize autocollimators which measure slope by evaluating the displacement of a reticle image on a detector. Based on our privileged access to the raw image data of an autocollimator, novel strategies to reduce the systematic measurement errors by using a set of overlapping images of the reticle obtained at different positions on the detector are discussed. It is demonstrated that imaging properties such as, for example, geometrical distortions and vignetting, can be extracted from this redundant set of images without recourse to external calibration facilities. This approach is based on the fact that the properties of the reticle itself do not change – all changes in the reticle image are due to the imaging process. Firstly, by combining interpolation and correlation, it is possible to determine the shift of a reticle image relative to a reference image with minimal error propagation. Secondly, the intensity of the reticle image is analysed as a function of its position on the CCD and a vignetting correction is calculated. Thirdly, the size of the reticle image is analysed as a function of its position and an imaging distortion correction is derived. It is demonstrated that, for different measurement ranges and aperture diameters of the autocollimator, reductions in the systematic errors of up to a factor of four to five can be achieved without recourse to external measurements. Full Article text
rem Diamond sensors for hard X-ray energy and position resolving measurements at the European XFEL By journals.iucr.org Published On :: 2024-07-30 The diagnostics of X-ray beam properties has a critical importance at the European X-ray Free-Electron Laser facility. Besides existing diagnostic components, utilization of a diamond sensor was proposed to achieve radiation-hard, non-invasive beam position and pulse energy measurements for hard X-rays. In particular, with very hard X-rays, diamond-based sensors become a useful complement to gas-based devices which lose sensitivity due to significantly reduced gas cross-sections. The measurements presented in this work were performed with diamond sensors consisting of an electronic-grade single-crystal chemical-vapor-deposition diamond with position-sensitive resistive electrodes in a duo-lateral configuration. The results show that the diamond sensor delivers pulse-resolved X-ray beam position data at 2.25 MHz with an uncertainty of less than 1% of the beam size. To our knowledge this is the first demonstration of pulse-resolved position measurements at the MHz rate using a transmissive diamond sensor at a free-electron laser facility. It can therefore be a valuable tool for X-ray free-electron lasers, especially for high-repetition-rate machines, enabling applications such as beam-based alignment and intra-pulse-train position feedback. Full Article text
rem Double-edge scan wavefront metrology and its application in crystal diffraction wavefront measurements By journals.iucr.org Published On :: 2024-07-29 Achieving diffraction-limited performance in fourth-generation synchrotron radiation sources demands monochromator crystals that can preserve the wavefront across an unprecedented extensive range. There is an urgent need for techniques of absolute crystal diffraction wavefront measurement. At the Beijing Synchrotron Radiation Facility (BSRF), a novel edge scan wavefront metrology technique has been developed. This technique employs a double-edge tracking method, making diffraction-limited level absolute crystal diffraction wavefront measurement a reality. The results demonstrate an equivalent diffraction surface slope error below 70 nrad (corresponding to a wavefront phase error of 4.57% λ) r.m.s. within a nearly 6 mm range for a flat crystal in the crystal surface coordinate. The double-edge structure contributes to exceptional measurement precision for slope error reproducibility, achieving levels below 15 nrad (phase error reproducibility < λ/100) even at a first-generation synchrotron radiation source. Currently, the measurement termed double-edge scan (DES) has already been regarded as a critical feedback mechanism in the fabrication of next-generation crystals. Full Article text
rem Toward a quantitative description of solvation structure: a framework for differential solution scattering measurements By journals.iucr.org Published On :: 2024-05-01 Appreciating that the role of the solute–solvent and other outer-sphere interactions is essential for understanding chemistry and chemical dynamics in solution, experimental approaches are needed to address the structural consequences of these interactions, complementing condensed-matter simulations and coarse-grained theories. High-energy X-ray scattering (HEXS) combined with pair distribution function analysis presents the opportunity to probe these structures directly and to develop quantitative, atomistic models of molecular systems in situ in the solution phase. However, at concentrations relevant to solution-phase chemistry, the total scattering signal is dominated by the bulk solvent, prompting researchers to adopt a differential approach to eliminate this unwanted background. Though similar approaches are well established in quantitative structural studies of macromolecules in solution by small- and wide-angle X-ray scattering (SAXS/WAXS), analogous studies in the HEXS regime—where sub-ångström spatial resolution is achieved—remain underdeveloped, in part due to the lack of a rigorous theoretical description of the experiment. To address this, herein we develop a framework for differential solution scattering experiments conducted at high energies, which includes concepts of the solvent-excluded volume introduced to describe SAXS/WAXS data, as well as concepts from the time-resolved X-ray scattering community. Our theory is supported by numerical simulations and experiment and paves the way for establishing quantitative methods to determine the atomic structures of small molecules in solution with resolution approaching that of crystallography. Full Article text
rem High-accuracy measurement, advanced theory and analysis of the evolution of satellite transitions in manganese Kα using XR-HERFD By journals.iucr.org Published On :: 2024-06-21 Here, the novel technique of extended-range high-energy-resolution fluorescence detection (XR-HERFD) has successfully observed the n = 2 satellite in manganese to a high accuracy. The significance of the satellite signature presented is many hundreds of standard errors and well beyond typical discovery levels of three to six standard errors. This satellite is a sensitive indicator for all manganese-containing materials in condensed matter. The uncertainty in the measurements has been defined, which clearly observes multiple peaks and structure indicative of complex physical quantum-mechanical processes. Theoretical calculations of energy eigenvalues, shake-off probability and Auger rates are also presented, which explain the origin of the satellite from physical n = 2 shake-off processes. The evolution in the intensity of this satellite is measured relative to the full Kα spectrum of manganese to investigate satellite structure, and therefore many-body processes, as a function of incident energy. Results demonstrate that the many-body reduction factor S02 should not be modelled with a constant value as is currently done. This work makes a significant contribution to the challenge of understanding many-body processes and interpreting HERFD or resonant inelastic X-ray scattering spectra in a quantitative manner. Full Article text
rem Reducing heat load density with asymmetric and inclined double-crystal monochromators: principles and requirements revisited By journals.iucr.org Published On :: The major principles and requirements of asymmetric and inclined double-crystal monochromators are re-examined and presented to guide their design and development for significantly reducing heat load density and gradient on the monochromators of fourth-generation synchrotron light sources and X-ray free-electron lasers. Full Article text
rem Texture measurements on quartz single crystals to validate coordinate systems for neutron time-of-flight texture analysis By journals.iucr.org Published On :: 2023-11-24 In crystallographic texture analysis, ensuring that sample directions are preserved from experiment to the resulting orientation distribution is crucial to obtain physical meaning from diffraction data. This work details a procedure to ensure instrument and sample coordinates are consistent when analyzing diffraction data with a Rietveld refinement using the texture analysis software MAUD. A quartz crystal is measured on the HIPPO diffractometer at Los Alamos National Laboratory for this purpose. The methods described here can be applied to any diffraction instrument measuring orientation distributions in polycrystalline materials. Full Article text
rem Automated pipeline processing X-ray diffraction data from dynamic compression experiments on the Extreme Conditions Beamline of PETRA III By journals.iucr.org Published On :: 2024-07-04 Presented and discussed here is the implementation of a software solution that provides prompt X-ray diffraction data analysis during fast dynamic compression experiments conducted within the dynamic diamond anvil cell technique. It includes efficient data collection, streaming of data and metadata to a high-performance cluster (HPC), fast azimuthal data integration on the cluster, and tools for controlling the data processing steps and visualizing the data using the DIOPTAS software package. This data processing pipeline is invaluable for a great number of studies. The potential of the pipeline is illustrated with two examples of data collected on ammonia–water mixtures and multiphase mineral assemblies under high pressure. The pipeline is designed to be generic in nature and could be readily adapted to provide rapid feedback for many other X-ray diffraction techniques, e.g. large-volume press studies, in situ stress/strain studies, phase transformation studies, chemical reactions studied with high-resolution diffraction etc. Full Article text
rem In situ/operando method for energy stability measurement of synchrotron radiation By journals.iucr.org Published On :: 2024-10-15 A novel in situ/operando method is introduced to measure the photon beam stability of synchrotron radiation based on orthogonal diffraction imaging of a Laue crystal/analyzer, which can decouple the energy/wavelength and Bragg angle of the photon beam using the dispersion effect in the diffraction process. The method was used to measure the energy jitter and drift of the photon beam on BL09B and BL16U at the Shanghai Synchrotron Radiation Facility. The experimental results show that this method can provide a fast way to measure the beam stability of different light sources including bending magnet and undulator with meV-level energy resolution and ms-level time response. Full Article text
rem Celebrating JSR's 30th anniversary: reminiscences of a Main Editor By journals.iucr.org Published On :: 2024-10-01 Full Article text
rem PayComplete research shows cash remains a widely used payment method By thepaypers.com Published On :: Tue, 12 Nov 2024 14:40:00 +0100 PayComplete has unveiled a report that... Full Article
rem Africhange secures IMTO licence to streamline remittance to Nigeria By thepaypers.com Published On :: Fri, 08 Nov 2024 14:45:00 +0100 Africhange has announced that its Nigerian branch, Currenzo,... Full Article