Serial crystallography, born from groundbreaking experiments at the Linac Coherent Light Source in 2009, has evolved into a pivotal technique in structural biology. Initially pioneered at X-ray free-electron laser facilities, it has now expanded to synchrotron-radiation facilities globally, with dedicated experimental stations enhancing its accessibility. This review gives an overview of current developments in serial crystallography, emphasizing recent results in time-resolved crystallography, and discussing challenges and shortcomings.

The interpretation of cryo-EM maps often includes the docking of known or predicted structures of the components, which is particularly useful when the map resolution is worse than 4 Å. Although it can be effective to search the entire map to find the best placement of a component, the process can be slow when the maps are large. However, frequently there is a well-founded hypothesis about where particular components are located. In such cases, a local search using a map subvolume will be much faster because the search volume is smaller, and more sensitive because optimizing the search volume for the rotation-search step enhances the signal to noise. A Fourier-space likelihood-based local search approach, based on the previously published em_placement software, has been implemented in the new emplace_local program. Tests confirm that the local search approach enhances the speed and sensitivity of the computations. An interactive graphical interface in the ChimeraX molecular-graphics program provides a convenient way to set up and evaluate docking calculations, particularly in defining the part of the map into which the components should be placed.

Cryogenic electron microscopy (cryo-EM) is a pivotal technique for imaging macromolecular structures. However, despite extensive processing of large image sets collected in cryo-EM experiments to amplify the signal-to-noise ratio, the reconstructed 3D protein-density maps are often limited in quality due to residual noise, which in turn affects the accuracy of the macromolecular representation. Here, crefDenoiser is introduced, a denoising neural network model designed to enhance the signal in 3D cryo-EM maps produced with standard processing pipelines. The crefDenoiser model is trained without the need for `clean' ground-truth target maps. Instead, a custom dataset is employed, composed of real noisy protein half-maps sourced from the Electron Microscopy Data Bank repository. Competing with the current state-of-the-art, crefDenoiser is designed to optimize for the theoretical noise-free map during self-supervised training. We demonstrate that our model successfully amplifies the signal across a wide variety of protein maps, outperforming a classic map denoiser and following a network-based sharpening model. Without biasing the map, the proposed denoising method leads to improved visibility of protein structural features, including protein domains, secondary structure elements and modest high-resolution feature restoration.

Conformational change mediates the biological functions of macromolecules. Crystallographic measurements can map these changes with extraordinary sensitivity as a function of mutations, ligands and time. A popular method for detecting structural differences between crystallographic data sets is the isomorphous difference map. These maps combine the phases of a chosen reference state with the observed changes in structure factor amplitudes to yield a map of changes in electron density. Such maps are much more sensitive to conformational change than structure refinement is, and are unbiased in the sense that observed differences do not depend on refinement of the perturbed state. However, even modest changes in unit-cell properties can render isomorphous difference maps useless. This is unnecessary. Described here is a generalized procedure for calculating observed difference maps that retains the high sensitivity to conformational change and avoids structure refinement of the perturbed state. This procedure is implemented in an open-source Python package, MatchMaps, that can be run in any software environment supporting PHENIX [Liebschner et al. (2019). Acta Cryst. D75, 861–877] and CCP4 [Agirre et al. (2023). Acta Cryst. D79, 449–461]. Worked examples show that MatchMaps `rescues' observed difference electron-density maps for poorly isomorphous crystals, corrects artifacts in nominally isomorphous difference maps, and extends to detecting differences across copies within the asymmetric unit or across altogether different crystal forms.

A deep-learning algorithm is proposed for the inpainting of Bragg coherent diffraction imaging (BCDI) patterns affected by detector gaps. These regions of missing intensity can compromise the accuracy of reconstruction algorithms, inducing artefacts in the final result. It is thus desirable to restore the intensity in these regions in order to ensure more reliable reconstructions. The key aspect of the method lies in the choice of training the neural network with cropped sections of diffraction data and subsequently patching the predictions generated by the model along the gap, thus completing the full diffraction peak. This approach enables access to a greater amount of experimental data for training and offers the ability to average overlapping sections during patching. As a result, it produces robust and dependable predictions for experimental data arrays of any size. It is shown that the method is able to remove gap-induced artefacts on the reconstructed objects for both simulated and experimental data, which becomes essential in the case of high-resolution BCDI experiments.

The design and first results of a high-transmission soft X-ray spectrometer operated at the X-SPEC double-undulator beamline of the KIT Light Source are presented. As a unique feature, particular emphasis was placed on optimizing the spectrometer transmission by maximizing the solid angle and the efficiencies of spectrometer gratings and detector. A CMOS detector, optimized for soft X-rays, allows for quantum efficiencies of 90% or above over the full energy range of the spectrometer, while simultaneously offering short readout times. Combining an optimized control system at the X-SPEC beamline with continuous energy scans (as opposed to step scans), the high transmission of the spectrometer, and the fast readout of the CMOS camera, enable the collection of entire rapid resonant inelastic soft X-ray scattering maps in less than 1 min. Series of spectra at a fixed energy can be taken with a frequency of up to 5 Hz. Furthermore, the use of higher-order reflections allows a very wide energy range (45 to 2000 eV) to be covered with only two blazed gratings, while keeping the efficiency high and the resolving power E/ΔE above 1500 and 3000 with low- and high-energy gratings, respectively.

The USGS is pleased to announce the release of new US Topo maps for Puerto Rico and the U.S. Virgin Islands. These updated topographic maps offer valuable, current geographic information for residents, visitors, and professionals, providing essential resources for communities in these areas.

President Biden plans to visit the Champlain Towers condo collapse later this week.; Credit: Lynne Sladky/AP

The White House says President Biden and first lady Jill Biden will travel to Florida Thursday to view first hand the partial collapse of the Champlain Towers condominium.

Asked by reporters if he planned to visit Surfside, Biden said, "Yes I hope so, as soon as we can. Maybe as early as Thursday." The White House issued a formal announcement of the trip shortly afterward.

The official death toll in the collapse has risen to 11, with some 150 people unaccounted for.

The Biden administration has responded to the disaster, dispatching FEMA administrator Deanne Criswell to the scene earlier this week.

"[The agency] has deployed an Incident Management Assistance Team, as well as building science experts, structural engineers and geotechnical experts to support search-and-rescue operations, and a mobile command center," White House press secretary Jen Psaki said Monday.

Psaki said the U.S. Army Corps of Engineers is also providing technical assistance for debris removal. Two FEMA-supported search-and-rescue teams are also involved in the response to the collapse.

Florida Gov. Ron DeSantis has praised FEMA and the Biden administration for "stepping up to the plate" in providing assistance in the search and recovery effort. Miami-Dade Mayor Daniella Levine Cava said Biden's upcoming trip would be "an important reminder that our county, our state and our nation are giving everything we have to search for the victims of this tragedy and support the families in this incredibly devastating time."

Here's what we know about what led to the collapse. Follow more coverage on the aftermath here.

Florida Division of Emergency Management is urging people with information about loved ones who are either unaccounted for or known to be safe to call 305-614-1819.

This content is from Southern California Public Radio. View the original story at SCPR.org.

The logo of National Oceanic and Atmospheric Administration is seen at the Nation Hurricane Center in Miami on Aug. 29, 2019. President Biden has nominated Rick Spinrad to head NOAA.; Credit: Eva Marie Uzcategui/Getty Images

President Biden is nominating Rick Spinrad to lead the National Oceanic and Atmospheric Administration, the government's premier agency on climate science which oversees the National Weather Service.

Prior to his current role as a professor of oceanography at Oregon State University, Spinrad served as NOAA's top scientist under President Obama and the U.S. representative to the United Nations' Intergovernmental Oceanographic Commission.

The nomination comes at a difficult moment in NOAA's history. The agency has been without an official, Senate-confirmed leader since former President Donald Trump took office in January 2017, after his two nominees to lead the agency failed to garner enough support to win a full vote before the Senate.

If Spinrad manages to win over the Senate, he will have to contend with a challenge beyond the agency's already-rigorous scientific mandate: restoring public confidence in a traditionally apolitical agency marred by political scandal.

In September 2019, then-President Trump wrongly said Alabama was in the projected path of Hurricane Dorian. He continued to reassert the claim for several days, including during an Oval Office briefing on the storm — in which he displayed what appeared to be an official National Weather Service map in which the storm's projected path was extended to Alabama by someone using a black marker.

After a National Weather Service office in Birmingham put out a tweet correctly stating that Alabama would not feel the effects of the storm, NOAA published an unsigned defense of the president's claims and rebuking its professional staff who posted the message.

Dan Sobien, then-president of the National Weather Service Employees Organization, said at the time that "the hard working employees of the NWS had nothing to do with the utterly disgusting and disingenuous tweet sent out by NOAA management."

If confirmed, Spinrad will lead a 12,000-person agency charged with a diverse portfolio that spans daily weather forecasts, climate monitoring, fisheries management and coastal restoration.

In a statement, the Environmental Defense Fund's Eric Schwaab applauded Spinrad's nomination, saying that NOAA's workers "couldn't ask for a better leader to restore scientific integrity and honor the agency's mission."

Biden, whose administration has made climate action a central focus, has proposed the largest budget in NOAA's history — $6.9 billion, a $1.5 billion increase over the 2021 budget allocated by Congress. It remains to be seen whether Congress will agree to the increase.

This content is from Southern California Public Radio. View the original story at SCPR.org.

As search and rescue efforts at the site of the Surfside, Fla., condo collapse stretch into day nine, officials have said that the number of confirmed fatalities has risen to 20, while the number of people unaccounted for has dropped from 145 to 128.

Miami-Dade County Mayor Daniella Levine Cava told reporters Friday that one of the two fatalities recovered overnight was the 7-year-old daughter of a firefighter for the city of Miami.

"It goes without saying that every night since this last Wednesday has been immensely difficult for everybody, particularly the families that have been impacted," Levine Cava said. "But last night was truly different and more difficult for our first responders. These men and women are paying an enormous human toll each every day, and I ask that all of you please keep all of them in your thoughts and prayers."

"They truly represent the very best in all of us, and we need to be there for them as they are here for us," she said.

The number of people who have been accounted for has grown to 188, officials also confirmed Friday. In many cases, detectives followed leads regarding individuals who were unaccounted for but then reached them and discovered they were safe.

They even discovered additional family members who were safe and who could have been in the building, and added them to the tally of accounted for individuals.

Officials have not yet released the names of all of the dead and missing people, and asked Friday that the privacy of the families be respected.

This content is from Southern California Public Radio. View the original story at SCPR.org.

The information was developed and compiled by the Children's Agenda Planning Committee, appointed by the Catawba County Board of Commissioners. The committee's vision is to ensure a safe community where all children are engaged, enriched and equipped to reach their full potential.

Police officers are perhaps the most visible faces of the law, and one of the few groups authorized to use force when dealing with the public. But despite the pivotal role that officers play in preventing and controlling crime, and in promoting justice, the science base is often inadequate regarding the value, fairness, and legitimacy of police practices and policies.

Ovarian cancer should not be categorized as a single disease, but rather as a constellation of different cancers involving the ovary, yet questions remain on how and where various ovarian cancers arise, says a new congressionally mandated report from the National Academies of Sciences, Engineering, and Medicine.

Improved understanding of the coupled natural-human coastal system will help promote resilience of coastal communities and ecosystems under rapidly changing environmental conditions and support informed decision-making, says a new report from the National Academies of Sciences, Engineering, and Medicine.

Research funded by NIH that uses nonhuman primates is critical to the nation’s ability to respond adequately to public health emergencies and carry out high-impact biomedical research, but gaps in the systems that support research using these animal models are undermining national health emergency readiness.

Big IT firms such as Accenture, Infosys and IBM along with many midcaps like Persistent, Cyient, Global Logic and others have acquired smaller firms working in cutting-edge technologies.

New plant-based snack features smooth, creamy taste and green peas as first ingredient.

To meet growing demand for sprouted grain foods, Angelic Bakehouse has added Sprouted Artisan Seven-Grain Premium Wraps to its flatbread line.

Givaudan has published initial insights and the first commercial innovation inspired by the fifth savory edition of its global Chef’s Council event – The Protein Challenge.

Since identifying the novel coronavirus and COVID-19 in Wuhan, China in late December 2019 until press time for our April issue of SF&WB at the end of March, the virus is known to have infected over 750,000 people, tragically causing over 36,200 deaths.

Second Nature Brands LLC will acquire the Voortman cookie brand from The J.M. Smucker Co. in an all-cash transaction worth $305 million.

The brand is undergoing a packaging redesign for its three Harvest Snaps flavors: Honey Dijon, Loaded Taco, and White Cheddar Jalapeno.

The snacks consist of a baked base of green peas and are flavored with a touch of sweetness and heat.

The snack cakes and loaves sector showed great promise over the last 12 months, presumably because consumers are now out and about more, and they want individual servings or on-the-go bakery snacks to fit their busy lifestyles.

The McKee Foods brand’s 2024 Christmas lineup includes a pair of new items and several returning products.

The World Food Championships has announced St. Pierre as the Official Burger Category Sponsor for its 2024 competition in Indianapolis, taking place Nov. 8-12.

Bromberg's return to the pizza industry marks a full-circle moment, building on her previous experience as director of core brand marketing at Pizza Hut.

Producers can harness the supplier’s maple syrup and sugar for pastries and other items.

Gluten has become Public Enemy Number One. Countless people follow a gluten-free diet, and just about everyone knows someone avoiding foods made with the gluten-containing grains wheat, rye and barley

When 2015 began, most Washington, D.C. observers predicted more gridlock in Washington.

From being able to get things done to staying on track, distractions can sabotage productivity in ways that we don’t even realize.

A Boston waterproofing contractor exposed employees to life-threatening cave-ins and excavation hazards at worksites.

The knowledge gap within utilities, construction, and related industries is more of a growing concern than ever — especially when it comes to serious injuries and exposures. 

As plastic caps and closures rise in demand, companies continue to innovate, improving on the performance and sustainability of beverage packaging, driving more adoption of recyclability and reusability.

Alpek Polyester offers CaPETall, a sustainable solution that allows for PET to be used in caps and closures to achieve a 100% PET packaging solution.

Esteemed educator, author, and podcaster, Barbara Taber, EdD, has delivered the highly anticipated season finale of Take It Or Leave It, against impossibly high expectations, following the landmark achievement of her previous three episodes.

Engel led marketing strategy and subscriber growth at Warner Bros. Discovery and A+E Networks.

SmartBuyGlasses is proud to announce a successful year in 2022 thanks to its customers and numerous achievements and partnerships

24-7PressRelease.com Selected as Top Source For Press Release Distribution

LogicalDOC is proud to wrap up Q1 2024 with huge success and accolades from the Gartner Digital Markets brands - Software Advice, and GetApp. Our product was recognized in various flagship reports in Q1

Board-Certified Plastic Surgeon, Dr. Kaveh Alizadeh, the creator of the NaturaBra™ Breast Lift is set to present on two surgical topics at the ISAPS World Congress this June in Colombia.

New limited release set for late March.

Colorado Rural Health Center Snapshot of Rural Health Explores Demographics, Population Health, Education, Economy, COVID-19, and more.

Where Podcasting Meets Interior Design

Hammer Head makes Sensory Friendly Solutions' "Favourite Things" list as the world's only in its category. Delivering a much improved aquatic experience and quality of life.

Scores of Businesses and Workers Losing Money In The Wake of the Francis Scott Key Bridge Collapse

The report illustrates parallels between the two events and speculates on the ramifications that FTX's collapse may have on the real estate sector.

Dr. Nicholas Franco Discusses Medicolegal Concerns Surrounding Surgical Devices and Mesh for Vaginal Prolapse and Urinary Incontinence

The first FIX Innovation Awards Media Day: IR pitches and Q&A sessions from 8 FIX Innovation Award-winning companies, 11 representatives from 9 global news media, and reporters from 5 Korean news outlets.

Global media outlets attended the media session hosted by the Incheon Free Economic Zone Authority.