Bragg coherent X-ray diffraction imaging (BCDI) has emerged as a powerful technique for strain imaging and morphology reconstruction of nanometre-scale crystals. However, BCDI often suffers from angular distortions that appear during data acquisition, caused by radiation pressure, heating or imperfect scanning stages. This limits the applicability of BCDI, in particular for small crystals and high-flux X-ray beams. Here, we present a pre-processing algorithm that recovers the 3D datasets from the BCDI dataset measured under the impact of large angular distortions. We systematically investigate the performance of this method for different levels of distortion and find that the algorithm recovers the correct angles for distortions up to 16.4× (1640%) the angular step size dθ = 0.004°. We also show that the angles in a continuous scan can be recovered with high accuracy. As expected, the correction provides marked improvements in the subsequent phase retrieval.

This article describes a correction procedure for the removal of indirect background contributions to measured small-angle X-ray scattering patterns. The high scattering power of a sample in the ultra-small-angle region may serve as a secondary source for a window placed in front of the detector. The resulting secondary scattering appears as a sample-dependent background in the measured pattern that cannot be directly subtracted. This is an intricate problem in measurements at ultra-low angles, which can significantly reduce the useful dynamic range of detection. Two different procedures are presented to retrieve the real scattering profile of the sample.

Processing of single-crystal X-ray diffraction data from area detectors can be separated into two steps. First, raw intensities are obtained by integration of the diffraction images, and then data correction and reduction are performed to determine structure-factor amplitudes and their uncertainties. The second step considers the diffraction geometry, sample illumination, decay, absorption and other effects. While absorption is only a minor effect in standard macromolecular crystallography (MX), it can become the largest source of uncertainty for experiments performed at long wavelengths. Current software packages for MX typically employ empirical models to correct for the effects of absorption, with the corrections determined through the procedure of minimizing the differences in intensities between symmetry-equivalent reflections; these models are well suited to capturing smoothly varying experimental effects. However, for very long wavelengths, empirical methods become an unreliable approach to model strong absorption effects with high fidelity. This problem is particularly acute when data multiplicity is low. This paper presents an analytical absorption correction strategy (implemented in new software AnACor) based on a volumetric model of the sample derived from X-ray tomography. Individual path lengths through the different sample materials for all reflections are determined by a ray-tracing method. Several approaches for absorption corrections (spherical harmonics correction, analytical absorption correction and a combination of the two) are compared for two samples, the membrane protein OmpK36 GD, measured at a wavelength of λ = 3.54 Å, and chlorite dismutase, measured at λ = 4.13 Å. Data set statistics, the peak heights in the anomalous difference Fourier maps and the success of experimental phasing are used to compare the results from the different absorption correction approaches. The strategies using the new analytical absorption correction are shown to be superior to the standard spherical harmonics corrections. While the improvements are modest in the 3.54 Å data, the analytical absorption correction outperforms spherical harmonics in the longer-wavelength data (λ = 4.13 Å), which is also reflected in the reduced amount of data being required for successful experimental phasing.

Despite the importance of eyesight, millions of people grapple with undiagnosed or untreated vision impairments — ranging from mild conditions to total blindness — and eye and vision health remain relatively absent from national health priority lists, says a new report from the National Academies of Sciences, Engineering, and Medicine.

The National Academies of Sciences, Engineering, and Medicine started work on a new study last month that will provide advice to policymakers, corrections officials, and public health officials on best practices for mitigating the spread of COVID-19 in correctional facilities through large-scale release and decarceration efforts.

Have you remodeled a bathroom recently? If so, maybe you’ve noticed problems with the toilet.
To get more specific: Is it rocking noisily when the homeowner takes a seat? Or maybe they've noticed water pooling at the base. Perhaps the flooring surrounding the toilet feels soft. Or water spots have appeared on the ceiling located directly below the toilet.

Experts weigh in on the various forms of packaging inspection equipment used in the beverage industry.

Dr. Barbara Morrell channels years of expertise into her work with St. Joseph's University

M. Glenn Baxter's spiritual journey over last 5 years has opened his eyes through the laws of nature into the metaphysical life force vibrational resonance to connect and flow in Oneness with The Absolute Trinity Creator of Universe.

The universally used Advanced Encryption Standard (AES) encryption can now be dramatically upgraded and customized by a patented technology called the Finite Lab-Transform (FLT)

With a variety of features geared for speed and efficiency, ColorFast is a one-stop shop where video editors can quickly fix exposure problems and create the look they want across an entire production.

Eye Candy, Inc. adds Digital Vision's 2013 rev2 grading and mastering suite, including ACES (ST 2065-1-2012)

The partnership between Aptos and Jump.trade is expected to onboard a lot of users into the MCL game and the Web3 ecosystem at large.

PepperBall® proudly features its latest innovations in non-lethal response tools at SHOT Show 2024 – the PepperBall BLAST™ and its advanced variation, the BLAST-GB™ with a glass-breaking tip.

Sarah Fineran, MA lends years of expertise to her work with the Iowa Department of Corrections

The South Carolina Court of Appeals ruled that an injured nurse was entitled to benefits for a closed period and that the Workers’ Compensation Commission erred in calculating her average weekly wage. Rachel…

The Order for Miata Holdings Inc. published October 31, 2024 in (2024), 47 OSCB 8430 contained a typographical error. The lettered list following the second paragraph should be numbered as follows:

Corrected Address - Extended Partial Alley Closure for the alley west of 5600 thru 5614 N. Winthrop Avenue & 1114 W. Bryn Mawr Avenue for alley reconstruction.

Nikon has announced the launch of Scatter Correction CT, a software solution that enhances image quality and measurement accuracy in industrial computed tomography (CT) scanning by correcting scatter artifacts.

The air duct calculator, or “ductulator,” is a commonly used tool for designing and installing duct systems. Unfortunately, many designers and technicians receive limited instructions on its correct use.

Best-selling author adrienne maree brown’s new book offers tools to navigate the difficult conversations and dynamics of organizing and belonging.

Nowadays, if you do not consider harmonics distortion when designing a new network, you missed the whole point of the network design. Yes, really. The sooner you realize that harmonics problems are on the rise, the better. Modern power networks... Read more

The post Practical design knowledge in harmonics distortion and power factor correction (PFC) appeared first on EEP - Electrical Engineering Portal.

Electrical systems normally use current and voltage transformers for protection and measurement purposes. They represent the power system’s eyes and ears, and it’s essential to fully understand how they work, how to make the correct specification and most importantly, the... Read more

The post What steps should be taken to avoid choosing the incorrect current and voltage transformers? appeared first on EEP - Electrical Engineering Portal.

Generally speaking, there are four ‘Poors’ that can lead to incorrectly installing instrumentation sensors: Poor placement Poor control Poor protection Poor grounding Each of above sensor ‘poors’ are described below, and by the way… have you read what is the mistake No.1... Read more

The post Installing Sensors Incorrectly As a Mistake #2 In Instrumentation appeared first on EEP - Electrical Engineering Portal.

Why reactive power and power factor correction are so important? Well, for experienced engineers, this is not the question but the fact. For young students who meet this matter and terms for the first time, it’s important to explain the... Read more

The post Reactive power and power factor correction essentials to ALWAYS keep on mind appeared first on EEP - Electrical Engineering Portal.

Correction of stream_type value

Error-correcting procedures for DCEs using asynchronous-to-synchronous conversion

Error-correcting procedures for DCEs using asynchronous-to-synchronous conversion

Profit must be calculated as a percentage not of cost, but of the final selling price.

Las acciones de Merlin Properties se han dejado más de un 7% en la sesión y las de Colonial un 5% tras conocerse la intención del Ejecutivo de cambiar su tributación. El Ibex retrocede al nivel de hace dos meses y pierde los 11.400 puntos Leer

By Natalia Spitsyna, International animal transport specialist.

Among all cargoes that are transported by air, there is a special category of cargoes that causes a lot of questions during registration, and also puts airlines and their employees in a state of shock. This category of special cargo is "live animals".

Public servants join government because they believe in making it better, but we also need to trust in each other’s ability to grow and learn through feedback.

The post Correction to connection: Making federal performance review season less spooky first appeared on Federal News Network.

More secure and better at correcting typos on your phone, can this Swiss start-up take on Google?

Location: Government Information - J 16.1:929-30/SUPP.

Location: Government Information - J 1.42/3:SD-JD-2

Undoubtedly WordPress has been excellently set up to get the best of Search Engine Optimization. That’s the reason why most of us are always reluctant to get away from the cozy comfort of WordPress and get the site hosted with third party. Also, transition to a third party means increased responsibility starting from the need […]

Panelistas plantearon que programas son acertados, no obstante, advirtieron que hace falta programas de fondo como un plan de empleo de emergencia.

Panelistas consideran que en varias ciudades del país la regulación que prohíbe consumo de drogas puede terminar siendo inconstitucional.

¿Cómo cuidar correctamente tu riñón?

¿Cómo aislar moléculas de manera correcta?

¿Cómo usar correctamente los antibióticos?

La escritora chilena, Carola Martínez Arroyo, y la editora de Babel Libros, María Osorio, se suman a las voces críticas de la polémica reescritura de los textos del novelista británico

El antioqueño Steven Rodríguez, nuevo jugador del Junior de Barranquilla, contó a El Alargue de Caracol Radio cómo ha sido su proceso de adaptación a la ciudad y a sus nuevos compañeros. Rodríguez, quien llega procedente de Alianza Petrolera, habló del técnico Bolillo Gómez y de la lucha por la titularidad con Carlos Bacca y Gonzalo Lencina.

The Corporation of Hamilton said they will be correcting the “Kerp Clear” road marking located on Front Street, and explained that what happened was an “oversight” as the “worker only had one ‘E’ stencil so he used the ‘R’ as a place-marker when laying out the word with the intent to re-use the ‘E’ after […]

With the internet changing everyday staying on top of new trends and changes surrounding SEO should be a top priority of any professional SEO Company. Within the last year or more the SEO industry has changed immensely. Some of these changes include the Panda and Penguin filters and the recent changes of the exact match […]

T. A. Suslina
St. Petersburg Math. J. 35 (), 537-570.
Abstract, references and article information

If the response variable is in the CLASS statement variable list before the class variables that also appear in the MODEL statement, and an OM-data-set is used, least squares means results for several of the statistical procedures are incorrect.