Single crystals of NbF5, niobium(V) fluoride, have been obtained by the reaction of niobium metal in a stream of dilute elemental fluorine at 473 K and subsequent sublimation. The as-obtained bulk phase compound was shown to be pure by powder X-ray diffraction at 293 K and by IR and Raman spectroscopy. A single-crystal X-ray analysis was conducted at 100 K. In comparison to the previously reported structure model [Edwards (1964). J. Chem. Soc. pp. 3714–3718], the lattice parameters and fractional atom coordinates were determined to much higher precision and individual, anisotropic displacement parameters were refined for all atoms.

The re-investigation of [Bi2O2(OH)](NO3), dioxidodibismuth(III) hydroxide nitrate, on the basis of single-crystal X-ray diffraction data revealed an apparent structural phase transition of a crystal structure determined previously (space group Cmc21 at 173 K) to a crystal structure with lower symmetry (space group Pna21 at 100 K). The Cmc21 → Pna21 group–subgroup relationship between the two crystal structures is klassengleiche with index 2. In contrast to the crystal structure in Cmc21 with orientational disorder of the nitrate anion, disorder does not occur in the Pna21 structure. Apart from the disorder of the nitrate anion, the general structural set-up in the two crystal structures is very similar: [Bi2O2]2+ layers extend parallel to (001) and alternate with layers of (OH)− anions above and (NO3)− anions below the cationic layer. Whereas the (OH)− anion shows strong bonds to the BiIII cations, the (NO3)− anion weakly binds to the BiIII cations of the cationic layer. A rather weak O—H⋯O hydrogen-bonding inter­action between the (OH)− anion and the (NO3)− anion links adjacent sheets along [001].

The title compound dipotassium gadolinium(III) phosphate(V) molybdate(VI), K2Gd(PO4)(MoO4), was synthesized from a high-temperature melt starting from GdF3 as a source of gadolinium. Its structure is isotypic with other MI2MIII(MVIO4)(PO4) compounds, where MI = Na, K or Cs, and MIII = rare-earth cation, MVI = Mo or W. The three-dimensional framework is built up from [Gd(PO4)(MoO4)] anionic sheets, which are organized by adhesion of [GdPO4] layers and [MoO4] tetra­hedra stacked above and below these layers. The inter­stitial space is occupied by K cations having eightfold oxygen coordination. The polyhedron of GdO8 was estimated to be a triangular dodeca­hedron by the continuous shape measurement method.

The complex, tri­chlorido­(1,4,11-tri­aza-8-azonia­tetra­cyclo­[6.6.2.04,16.011,15]hexa­decane 1-oxide-κO)zinc(II) monohydrate, [ZnCl3(C12H23N4O)]·H2O, (I), has monoclinic symmetry (space group P21/n) at 120 K. The zinc(II) center adopts a slightly distorted tetra­hedral coordination geometry and is coordinated by three chlorine atoms and the oxygen atom of the oxidized tertiary amine of the tetra­cycle. The amine nitro­gen atom, inside the ligand cleft, is protonated and forms a hydrogen bond to the oxygen of the amine oxide. Additional hydrogen-bonding inter­actions involve the protonated amine, the water solvate oxygen atom, and one of the chloro ligands.

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.

Developing semiconductor devices requires a fast and reliable source of strain information with high spatial resolution and strain sensitivity. This work investigates the strain in an axially heterostructured 180 nm-diameter GaInP nanowire with InP segments of varying lengths down to 9 nm, simultaneously probing both materials. Scanning X-ray diffraction (XRD) is compared with Bragg projection ptychography (BPP), a fast single-projection method. BPP offers a sufficient spatial resolution to reveal fine details within the largest segments, unlike scanning XRD. The spatial resolution affects the quantitative accuracy of the strain maps, where BPP shows much-improved agreement with an elastic 3D finite element model compared with scanning XRD. The sensitivity of BPP to small deviations from the Bragg condition is systematically investigated. The experimental confirmation of the model suggests that the large lattice mismatch of 1.52% is accommodated without defects.

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.

INSIGHT is a Python-based software tool for processing and reducing 2D grazing-incidence wide- and small-angle X-ray scattering (GIWAXS/GISAXS) data. It offers the geometric transformation of the 2D GIWAXS/GISAXS detector image to reciprocal space, including vectorized and parallelized pixel-wise intensity correction calculations. An explicit focus on efficient data management and batch processing enables full control of large time-resolved synchrotron and laboratory data sets for a detailed analysis of kinetic GIWAXS/GISAXS studies of thin films. It processes data acquired with arbitrarily rotated detectors and performs vertical, horizontal, azimuthal and radial cuts in reciprocal space. It further allows crystallographic indexing and GIWAXS pattern simulation, and provides various plotting and export functionalities. Customized scripting offers a one-step solution to reduce, process, analyze and export findings of large in situ and operando data sets.

Serial crystallography experiments at synchrotron and X-ray free-electron laser (XFEL) sources are producing crystallographic data sets of ever-increasing volume. While these experiments have large data sets and high-frame-rate detectors (around 3520 frames per second), only a small percentage of the data are useful for downstream analysis. Thus, an efficient and real-time data classification pipeline is essential to differentiate reliably between useful and non-useful images, typically known as `hit' and `miss', respectively, and keep only hit images on disk for further analysis such as peak finding and indexing. While feature-point extraction is a key component of modern approaches to image classification, existing approaches require computationally expensive patch preprocessing to handle perspective distortion. This paper proposes a pipeline to categorize the data, consisting of a real-time feature extraction algorithm called modified and parallelized FAST (MP-FAST), an image descriptor and a machine learning classifier. For parallelizing the primary operations of the proposed pipeline, central processing units, graphics processing units and field-programmable gate arrays are implemented and their performances compared. Finally, MP-FAST-based image classification is evaluated using a multi-layer perceptron on various data sets, including both synthetic and experimental data. This approach demonstrates superior performance compared with other feature extractors and classifiers.

Propagation-based phase contrast, for example in the form of edge enhancement contrast, is well established within X-ray imaging but is not widely used in neutron imaging. This technique can help increase the contrast of low-attenuation samples but may confuse quantitative absorption measurements. Therefore, it is important to understand the experimental parameters that cause and amplify or dampen this effect in order to optimize future experiments properly. Two simulation approaches have been investigated, a wave-based simulation and a particle-based simulation conducted in McStas [Willendrup & Lefmann (2020). J. Neutron Res. 22, 1–16], and they are compared with experimental data. The experiment was done on a sample of metal foils with weakly and strongly neutron absorbing layers, which were measured while varying the rotation angle and propagation distance from the sample. The experimental data show multiple signals: attenuation, phase contrast and reflection. The wave model reproduces the sample attenuation and the phase peaks but it does not reproduce the behavior of these peaks as a function of rotation angle. The McStas simulation agrees better with the experimental data, as it reproduces attenuation, phase peaks and reflection, as well as the change in these signals as a function of rotation angle and distance. This suggests that the McStas simulation approach, where the particle description of the neutron facilitates the incorporation of multiple effects, is the most convenient way of modeling edge enhancement in neutron imaging.

Predicting crystal symmetry simply from chemical composition has remained challenging. Several machine-learning approaches can be employed, but the predictive value of popular crystallographic databases is relatively modest due to the paucity of data and uneven distribution across the 230 space groups. In this work, virtually all crystallographic information available to science has been compiled and used to train and test multiple machine-learning models. Composition-driven random-forest classification relying on a large set of descriptors showed the best performance. The predictive models for crystal system, Bravais lattice, point group and space group of inorganic compounds are made publicly available as easy-to-use software downloadable from https://gitlab.com/vishsoft/cosy.

Small-angle neutron scattering is a widely used technique to study large-scale structures in bulk samples. The largest accessible length scale in conventional Bragg scattering is determined by the combination of the longest available neutron wavelength and smallest resolvable scattering angle. A method is presented that circumvents this limitation and is able to extract larger length scales from the low-q power-law scattering using a modification of the well known Porod law connecting the scattered intensity of randomly distributed objects to their specific surface area. It is shown that in the special case of a highly aligned domain structure the specific surface area extracted from the modified Porod law can be used to determine specific length scales of the domain structure. The analysis method is applied to study the micrometre-sized domain structure found in the intermediate mixed state of the superconductor niobium. The analysis approach allows the range of accessible length scales to be extended from 1 µm to up to 40 µm using a conventional small-angle neutron scattering setup.

This article presents a web-based framework to build a database without in-depth programming knowledge given a set of CIF dictionaries and a collection of CIFs. The framework consists of two main elements: the public site that displays the information contained in the CIFs in an ordered manner, and the restricted administrative site which defines how that information is stored, processed and, eventually, displayed. Thus, the web application allows users to easily explore, filter and access the data, download the original CIFs, and visualize the structures via JSmol. The modulated structures open database B-IncStrDB, the official International Union of Crystallography repository for this type of material and available through the Bilbao Crystallographic Server, has been re-implemented following the proposed framework.

Here, a morphologically based approach is used for the in situ characterization of 3D growth rates of facetted crystals from the solution phase. Crystal images of single crystals of the β-form of l-glutamic acid are captured in situ during their growth at a relative supersaturation of 1.05 using transmission optical microscopy. The crystal growth rates estimated for both the {101} capping and {021} prismatic faces through image processing are consistent with those determined using reflection light mode [Jiang, Ma, Hazlehurst, Ilett, Jackson, Hogg & Roberts (2024). Cryst. Growth Des. 24, 3277–3288]. The growth rate in the {010} face is, for the first time, estimated from the shadow widths of the {021} prismatic faces and found to be typically about half that of the {021} prismatic faces. Analysis of the 3D shape during growth reveals that the initial needle-like crystal morphology develops during the growth process to become more tabular, associated with the Zingg factor evolving from 2.9 to 1.7 (>1). The change in relative solution supersaturation during the growth process is estimated from calculations of the crystal volume, offering an alternative approach to determine this dynamically from visual observations.

Conic sections are commonly used in reflective X-ray optics. Hyperbolic mirrors can focus a converging light source and are frequently paired with elliptical or parabolic mirrors in Wolter type configurations. This paper derives the closed-form expression for a mirror-centered hyperbolic shape, with zero-slope at the origin. Combined with the slope and curvature, such an expression facilitates metrology, manufacturing and mirror-bending calculations. Previous works consider ellipses, parabolas, magnifying hyperbolas or employ lengthy approximations. Here, the exact shape function is given in terms of the mirror incidence angle and the source and image distances.

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

Chinese fast-fashion retailer Shein has introduced its first...

BuzzAR has launched BuzzPay,...

"Red Band Society," premieres on Fox September 17th, starring Octavia Spencer, Charlie Rowe and Nolan Sotillo.; Credit: Fox Television Studios

The Los Angeles County Metropolitan Transportation Authority is pulling ads for the Fox television show "Red Band Society" from nearly 200 buses amid complaints they are racist and offensive to women.

The ads show the ensemble cast's members in front of a wall with graffiti describing their characters.

A denigrating word for a woman is used to describe the show's star, Octavia Spencer's character.

The Los Angeles Times reports transit officials began pulling the ads on Wednesday. They had been up for five weeks.

The Red Band Society also shared the ad on its Facebook page in August. 

Facebook: #RedBandSociety ad

But it's since edited it to look like this.

Photo: New ad via Facebook

Protesters who attended Thursday's transit agency board meeting complained the depiction of Spencer's character is racist and offensive to women.

The actress, who plays a nurse in the hospital drama, is black.

She won a supporting actress Oscar for her role in "The Help."

Full Text:

The molecular mechanism used by many bacteria to kill neighboring cells has redundancy built into its genetic makeup, which could allow for the mechanism to be expressed in different environments, say researchers at Penn State and the University of Wisconsin-Madison. Their new study provides insights into the molecular mechanisms of competition among bacteria. "Many organisms, including humans, acquire bacteria from their environment," said Tim Miyashiro, a biochemist and molecular biologist at Penn State and the leader of the research team. "These bacteria can contribute to functions within the host organism, like how our gut bacteria help us digest food. We're interested in the interactions among bacteria cells, and between bacteria and their hosts, to better understand these mutually beneficial symbiotic relationships." Cells of the bioluminescent bacteria Vibrio fisheri take up residence in the light organ of newly hatched bobtail squid. At night, the bacteria produce a blue glow that researchers believe obscures a squid's silhouette and helps protect it from predators. The light organ has pockets, or crypts, in the squid's skin that provide nutrients and a safe environment for the bacteria. "When the squid hatches, it doesn't yet have any bacteria in its light organ," said Miyashiro. "But bacteria in the environment quickly colonize the squid's light organ." Some of these different bacteria strains can coexist, but others can't. "Microbial symbioses are essentially universal in animals, and are crucial to the health and development of both partners," says Irwin Forseth, a program director in the National Science Foundation's Division of Integrative Organismal Systems, which funded the research. "The results from this study highlight the role small genetic changes can play in microbe interactions. Increased understanding will allow us to better predict organisms' performance in changing environments."

Image credit: Andrew Cecere

The graphics in my post about R^2 were produced by an updated version of a sixty-year old program involving the U.S. census. Originally, the program was based on census data from 1900 to 1960 and sought to predict the population in 1970. The software back then was written in Fortran, the predominate technical programming language a half century ago. I have updated the MATLAB version of the program so that it now uses census data from 1900 to 2020.... read more >>

I didn't know anything about these topics until a couple of weeks ago. Now I can't stop thinking about them.... read more >>

Shortly after I posted Redheffer, Mertens and One-Million Dollars a few days ago, Mathworks' Pat Quillen made an important observation about computing the Mertens function.... read more >>

Shortly after I published the second post about the Mertens conjecture, a reader's comment suggested a new approach to computing Redheffer determinants and the Mertens function. It is now possible to compute a half-million values of the Mertens function in about five hours.... read more >>

Recently, I have made a series of blog posts about Redheffer matrices and the Mertens conjecture. After each of the posts, readers and colleagues offered suggestions to speed up the calculations. Here is a summary of what I have learned.... read more >>

USGS groundwater and surface water monitoring data contributed to the Pennsylvania Department of Environmental Protection's (PaDEP) November 1, 2024, declarations of drought watches and warnings for 35 Pennsylvania counties.

Live-event spaces, like the Sound Nightclub in Los Angeles, have been waiting months for emergency relief.; Credit: Mario Tama/Getty Images

Owners of live-music venues, theaters, museums and other businesses covered under the Shuttered Venue Operators Grant, or SVOG, can expect to see money by the end of May. This is according to an update from the Small Business Administration, which has been handling the SVOG program's bumpy rollout.

An SBA spokesperson said in an email that since the portal to apply for these grants opened a week ago, 10,300 applications have been submitted (another 12,000 have been started but not completed). The vast majority of those applications were from "Live venue operators or promoters," followed by performing arts organizations and then movie theaters.

The SBA has been reviewing applications and said in a statement that "applicants will receive notice of awards this month," with disbursement by the end of May if the applicant responds in a "timely manner to the notice of award."

The SVOG program is a $16 billion emergency relief program that then-President Donald Trump signed into law in late December 2020. It was a bipartisan effort to get aid money to struggling music venues and other arts and live-event spaces that have been hit hard by the coronavirus struggles. But for an emergency relief program, it has taken months to get money in the hands of business owners holding off landlords, insurance companies and other creditors. Those owners spent early 2021 waiting on an official announcement of when they could apply for the grant money while compiling any documents and paperwork they thought they might need. Then once the application site was up and running, it crashed and was closed.

Even as large festivals roll out throughout the U.S. and bands announce tours for later in the year, many small live-event spaces are still at risk of closing. The National Independent Venue Association, one of the most vocal groups lobbying for support for live-music venues, has long stated that 90% of its members would be forced to close without any aid — which would hurt nearby bars, restaurants and shops, not to mention the large apparatus that is the live touring-arts industry.

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

Tim Cook, chief executive officer of Apple Inc., speaks during an event in 2018. Apple is one of 310 companies calling on the Biden administration to slash carbon emissions.; Credit: David Paul Morris/Bloomberg via Getty Images

More than 300 businesses have signed an open letter calling on the Biden administration to reduce greenhouse gas emissions in the United States to at least half of 2005 levels by 2030. That would nearly double a previous target set by former President Barack Obama in 2015, who pledged a 25 to 28% reduction by 2025.

The United States is not currently on track to meet either goal.

The signatories include some of largest companies in the United States, including Walmart, Apple, McDonald's and Starbucks. "A bold 2030 target is needed to catalyze a zero-emissions future, spur a robust economic recovery, create millions of well-paying jobs, and allow the U.S. to 'build back better' from the pandemic," the letter said, echoing the president's economic recovery slogan.

A 50% reduction target would put the Biden administration in line with what groups such as the United Nations and National Academies of Science say is necessary to mitigate the worst impacts of climate change.

In a March statement calling for the same reductions target, the environmental advocacy group Natural Resources Defense Council said such a plan would "help pull the country out of the pandemic-induced recession by putting millions of Americans to work" and inspire more ambitious international climate action ahead of a major United Nations climate conference this November.

Like President Joe Biden's campaign promise to guide the United States to carbon-neutrality by the middle of the century, a 50% emissions reduction target would require steeper emissions cuts than the country has ever achieved.

In 2019, greenhouse gas emissions were approximately 13% below 2005 levels, a decrease of just 1.8% from the previous year.

The Biden administration has identified climate action as one of its top four priorities and has named prominent, experienced Washington insiders, including former Secretary of State John Kerry and former EPA administrator Gina McCarthy, to oversee climate policy efforts at the White House.

As NPR's Danielle Kurtzleben has previously reported, activists on the left are cautiously optimistic about the administration's climate plan after expressing doubts about Biden's climate record during the Democratic primary.

Sunrise Movement, a youth-led climate group that champions the Green New Deal, gave candidate Biden's initial climate plan an "F" grade. Now, the group's executive director Varshini Prakash is publicly celebrating his administration's latest climate-focused $2 trillion infrastructure bill — including its commitment to spend 40% of the infrastructure plan's money on disadvantaged communities and launch a jobs program called the Civilian Climate Corps.

New York Democratic Rep. Alexandria Ocasio-Cortez told NPR earlier this month that she feels that Biden has ultimately come around to the side of progressives on climate issues. She said: "As much as I think some parts of the party try to avoid saying 'Green New Deal' and really dance around and try to not use that term, ultimately, the framework I think has been adopted."

The emphasis on climate comes as a sharp departure from the Trump administration, which withdrew the United States from the Paris Agreement and set no emissions reductions targets.

Signatories to the Paris deal, which Biden rejoined on the day he was sworn into office, are all required to set these targets — formally known as nationally determined contributions, or NDCs.

The agreement also encourages nations to revise their goals every five years, in hopes that the proposals become more ambitious as the cost of environmental reform goes down.

Since the Paris agreement was first agreed to in 2015, though, just fifty of the deal's nearly 200 signatories have submitted revised targets. A recent U.N. analysis of international climate action found that many countries were doing far too little to reduce emissions for the world to avoid the worst effects of climate change.

So far, the White House has not indicated exactly how ambitious their plan will be. An announcement is expected in the coming days as the White House prepares for its Earth Day climate summit with world leaders, scheduled for Thursday, April 22.

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

Washington State Department of Agriculture entomologist Chris Looney displays a dead Asian giant hornet, a sample sent from Japan and brought in for research last year in Blaine, Wash.; Credit: Elaine Thompson /AFP via Getty Images

Murder hornets. They're back.

Authorities in Washington state have announced that they've confirmed the first U.S. report this year of an Asian giant hornet, or Vespa mandarinia, in a town north of Seattle.

"Basically the only information we have is that a slightly dried out, dead specimen was collected off of a lawn in Marysville," said Sven Spichiger, managing entomologist with the state agriculture department, during a press conference.

"There really isn't even enough information to speculate on how it got there or how long it had been there," Spichiger added.

Because of its withered condition and the fact that male giant hornets don't typically emerge until July, agriculture officials believe the hornet discovered in early June was likely from a previous season and just recently found.

So-called "murder hornets" are native to Asia but have been spotted in Washington state and Canada over the past two years. The sting of the Vespa mandarinia can be life-threatening to humans, and the killer insects are known to wipe out the colonies of their fellow bugs, particularly honey bees.

According to genetic testing of the specimen discovered in Washington this month, the dead hornet was not the same as the other giant hornets discovered in North America since 2019. The hornet's coloration, which indicates it came from southern Asia, also suggested it arrived in "probably a separate event" than the ones previously known, Spichiger said.

But he emphasized that that was not necessarily cause for alarm.

"I want to very much clarify that a single dead specimen does not indicate a population," Spichiger said.

Washington agriculture officials are now setting murder hornet traps in the area of the discovery and are encouraging "citizen scientists" to do the same.

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

Micromax forays in the race of in-house mobile launcher driven by Machine Learning and AI to enhance the user experience.

Commissioner Barger was recognized as �a leader with insight and determination� and a person of �trust, integrity, responsibility, and concern for fellow citizens� in a Distinguished Public Service Award presented to him during the meeting.

Cyndy Benson, who recently retired as Family and Children�s Services program manager in the Department of Social Services, has received the Kimberly F. Crews Memorial Award from the N.C. Professional Society on the Abuse of Children. This award is presented annually to honor a person who works directly with children suspected of having been abused.

Residents and businesses affected by severe storms and tornado on Oct. 26 in Catawba County can apply for low-interest disaster loans from the U.S. Small Business Administration, SBA Administrator Karen G. Mills announced today. Mills made the loans available in response to a letter from North Carolina Gov. Beverly E. Perdue on Nov. 12, requesting a disaster declaration by the SBA. The declaration covers Lincoln County and the adjacent counties of Burke, Catawba, Cleveland, Gaston, Iredell and Mecklenburg in North Carolina.

The Catawba County Finance Department is a winner of the Certificate of Achievement for Excellence in Financial Reporting from the Government Finance Officers Association (GFOA), for its Comprehensive Annual Financial Report for the fiscal year that ended on June 30, 2010. Catawba County has now won the award for 29 consecutive years.

County programs which developed QR (Quick Response) codes for building permits; reach families affected by economic distress, and serve as an ongoing, immediate source of food for students during weekends and extended breaks from school; and promote healthy, sustainable policies that improve physical activity and nutrition in schools were honored.

A team of students from Hickory High School's Student Council won the Grand Prize. The team included Will McCarrick, Anne Orgain, Taylor Panzer and Lexie Reeves. Their video, "Do You Drive Distracted?", was judged the best by a panel of judges.

The EcoComplex is a system that recovers all useable products and by-products from a group of private and public partners located in a close-knit defined area. This group of partners works together to use each other�s waste products either as a source of energy (electricity, steam, or heat) or as a raw material for the production of their own product (pallets, lumber, compost, brick shapes/art). The EcoComplex is also focused on making and using �green� energy and on economic development.

New State food rules recently put in place are expected to enforce safe food handling and reduce transmission of food-borne illness.

Catawba County Assistant County Manager Dewey Harris has earned the International City/County Management Association's (ICMA) Credentialed Manager designation. Established in 2002, the ICMA Credentialed Manager program recognizes professional government managers whom the ICMA certifies as having a "commitment to continuous learning and professional development".

The Catawba County Board of Commissioners took action at its meeting on February 4, 2013, to dedicate the entrance area of the Catawba County Justice Center in honor of retired Sheriff L. David Huffman and his 32 years of services to the county, including four as a county commissioner and 28 as Sheriff.

"Catawba County Facts and Figures" web page, the gateway for hundreds of pieces of data on dozens of topics related to the County government, demographics and quality of life, has been named winner of a 2013 National Association of Counties (NACo) Achievement Award.

Catawba County Public Health's annual report, emergency preparedness outreach have won national honors from the National Association of County Information Officers.

Adult Services Social Worker Chandra Henson with Catawba County Social Services has been honored by the North Carolina Adult Foster Care Association.

Catawba County Public Health has earned reaccreditation from the North Carolina Local Health Department Accreditation Board.

Dental care was recently provided for hundreds of children by Catawba County Public Health.

; Credit: /Ryan Raphael for NPR

To say Leah Juelke is an award-winning teacher is a bit of an understatement. She was a top 10 finalist for the Global Teacher Prize in 2020; she was North Dakota's Teacher of the Year in 2018; and she was awarded an NEA Foundation award for teaching excellence in 2019.

But Juelke, who teaches high school English learners in Fargo, N.D., says nothing prepared her for teaching during the pandemic.

"The level of stress is exponentially higher. It's like nothing I've experienced before."

It's a sentiment NPR heard from teachers across the country. After a year of uncertainty, long hours and juggling personal and work responsibilities, many told NPR they had reached a breaking point.

Heidi Crumrine, a high school English teacher in Concord, N.H., says this has been the most challenging year she's ever encountered in her two decades of teaching.

"And I say [that] as someone who started her first day of teaching on 9/11 in the Bronx in New York City."

Teaching is one of the most stressful occupations in the U.S., tied only with nurses, a 2013 Gallup poll found. Jennifer Greif Green, an education professor at Boston University, says the additional stress teachers are reporting during the pandemic is worrying because it doesn't only affect educators — it also affects students.

"The mental health and well-being of teachers can have a really important impact on the mental health and well-being of the children who they're spending most of their days with," Green explains. "Having teachers feel safe and supported in their school environments is essential to students learning and being successful."

Lisa Sanetti, a professor of educational psychology at the University of Connecticut, says, "Chronically stressed teachers are just less effective in the classroom."

All that stress can also lead to burnout, which leads to teachers leaving the profession, Sanetti says. "And we have a huge teacher turnover problem in our country."

Districts are trying to help — with yoga classes, counseling sessions and webinars on mental health. Some teachers have organized trivia nights or online happy hours where colleagues can just vent. Teachers told NPR they force themselves to take breaks and go for a bike ride or call a friend. Some have started therapy.

But most of the educators NPR spoke with say they're so exhausted, that even self-care feels like one additional thing to do.

"The reality is, when you're living it, you're just trying to get to the end of the day successfully and try again tomorrow," Crumrine says.

"It feels like we're building the plane while we're flying it"

In March 2020, when schools moved online, teachers across the U.S. had to completely reimagine their approach to education, often with no training or time to prepare. For many, it was a rough transition.

Teachers told NPR they've spent the past year experimenting with different methods of online and hybrid teaching, while also providing tech support for their students and families. Many say they routinely work 12-hour days and on weekends, yet struggle to form relationships with children virtually. Answering emails can take two hours a day.

Rashon Briggs, who teaches high school special education in Los Angeles, spent a lot of time worrying about his students during remote learning (his district only recently started offering in-person options). "One of the biggest challenges is knowing that the kids were not getting the same level of service that they were getting in person," he says.

Teachers in districts that opened earlier for in-person learning say they have additional responsibilities now, such as sanitizing desks between classes, making sure children follow school safety protocols and keeping track of students who have had to quarantine.

"I have a calendar and it says who's quarantined, who is cleared to return on what day, who was absent," explains Rosamund Looney, who teaches first grade in Jefferson Parish, La. "Then I follow up with those families to see: 'Are you OK?' So there's just so much space taken up by that monitoring."

Looney also worries about her students' learning. Everyone in her district has to wear masks in class, which she says she completely agrees with. But those masks mean she can't see her first graders' mouths as they learn phonics.

"You are watching your teacher sound out words and then figuring out how to do that. And it's really hard for me to gauge what they are and aren't able to say." She says she's especially concerned about students who are more at risk of falling behind academically, like English learners.

In New Hampshire, Crumrine says quarantines and positive cases among school staff have led to a constant shifting between fully online and hybrid classes. The fluctuations have been exhausting for her. "We started the year remote. Then we went back to school in October, then we were remote again in November, December. We went back to hybrid [in early February]," she says. New Hampshire's governor has now ordered all schools reopen for full-time, in-person classes by this week.

"It feels like we're building the plane while we're flying it and the destination keeps changing on us," Crumrine says.

Balancing work and home life

In addition to worrying about their students, many teachers are also concerned about their own children. Crumrine, whose husband is also a teacher, has three children and says she feels pulled by competing demands.

"I feel this sense of guilt that I'm not a good enough teacher for my students and I'm not a good mother for my own kids. It just feels like a constant wave of never feeling like I can do what I know I'm good at."

Juelke, in North Dakota, is a single mom with a 9- and 3-year-old. "I'm juggling the children and making sure my daughter is in her class and my 3-year-old is entertained. And that is definitely taking a toll."

Many teachers say they are eating and drinking more, and exercising and sleeping less.

Briggs, in L.A., says his sleeping patterns are completely off. "Being awake all hours of the night, going to bed at 2, 3 a.m., drinking coffee late at night and try to finish work so I can be more prepared the next day."

He's stressed, in part, because there are no clear work-life boundaries anymore. "When you're waking up in the same space that you're on Zoom, that you're grading papers, that you're watching Netflix, those lines are blurred very easily."

Others say they're not as active at home, and they're eating more junk food and putting on weight. The tight schedules means they don't always move between classes, or even remember to drink water.

"There are a lot of dehydrated teachers out there," says Looney.

Many, like Juelke, say they miss having personal time. "That time where I could sit in the car and drive to work and just kind of relax a little, or my prep time at school alone. That's gone now. And so I feel like my mental health has struggled in that way."

She says even though it breaks her heart, she's started looking for another profession.

Leonda Archer, a middle school math teacher in Arlington, Va., says she's usually a very upbeat person, but the pandemic — coupled with the racial turmoil in the country — has taken a toll. She's African American, and says reports of Black men and women being killed by police makes her fear for her husband's safety.

"There were some points of lowness that I hadn't experienced before. There are some days where I feel like it's hard to keep going."

Archer says she has had difficulty sleeping, and doesn't have an appetite. "And right when I get into a groove, another traumatic experience happens."

Briggs says it was hard not being able to process events like George Floyd's death and the Black Lives Matter protests with his colleagues. In the past, those conversations informed what he would say in the classroom to help his own students make sense of the news.

"The teachers were not able to talk to each other about 'How do you talk about this? How do you present that?' " he says. "There was a lack of ability for us to communicate a message about social justice and rights and the wrongs."

Crumrine says she misses the social aspect of being with her students, and other teachers. "We're not eating lunch together. We're not popping into each other's classrooms. We're all in our little silos."

The school reopening divide

Teachers told NPR they feel a growing chasm in their communities: Parents want schools to open, but teachers first want to make sure it's safe. Many feel they are not being included in these conversations, and their concerns aren't being taken seriously.

Crumrine says it's been devastating hearing elected officials and parents criticize teachers, insisting that schools need to open, even though teachers are concerned about their own health. She says some community members acted like online classes meant teachers weren't working at all. In fact, she says, they were working harder than ever. "It just makes it feel so much worse when you read these horrible things that people say about us or these assumptions that they make about what we are or are not doing."

She says many states, including her own, didn't prioritize vaccines for teachers, which to her revealed just "how deep that lack of value of educators is."

Sarahi Monterrey, who teaches English learners in Waukesha, Wisc., says she's felt a "huge divide" in the community. "It almost seems like us against them." She was in a Zoom school board meeting where parents and students were present, and a teacher testified that her husband had COVID-19. "And a parent in the room said, 'Who cares?' And I was blown away. Just blown away."

In Virginia, Archer says, at the beginning of the pandemic, "We were seen as angels. Like, 'Oh my God, I've been home with my child for two months, how do teachers do it?' And now the narrative has totally flip-flopped."

She says she also misses "the vibe of school, the energy, all of that. But I don't want people to be sick."

Archer works 12-hour days, and says people need to remember that teachers are people too. "Our profession is a nurturing one, but we also are humans that need to be poured into. We need to be nurtured, too."

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

; Credit: LA Johnson/NPR

Writing a graduation speech is a tricky task. Should you be funny, or sincere? Tell a story — or offer advice? For Yusef Pierce, a graduating senior in California, the job of putting together his public address was a bit more challenging.

"Being inside, I can't really refer to other graduation speeches," Pierce says. He's speaking by phone from inside the California Rehabilitation Center, a medium-security prison in Norco. "I was just trying to come up with what sounded like a graduation speech."

He is the first person to graduate with a bachelor's degree from the Inside-Out program at Pitzer College, a liberal arts school outside Los Angeles. In a normal year, the school would bring traditional students by bus to the prison to take classes alongside the students who are in prison.

Because of the coronavirus pandemic, those classes are happening online. Pierce shared his Zoom square with 10 other guys, all wearing the CRC's blue uniforms and seated at those classic classroom desks, where the chair and the table are attached. This spring, his classes included topics like feminism for men, microeconomics and mass incarceration.

In one of those classes on a recent evening this spring, professor Nigel Boyle goes around asking each student what they're looking forward to doing that week. Pierce replies: "I'm looking forward to doing a lot of homework!"

"Every professor wants a Yusef in your class," says Boyle, who leads the Inside-Out program and teaches Pierce's Wednesday night class about mass incarceration. "You want that student who's bright, does the work, but is also helping to bring along the others."

It was only natural then that Pierce would be one of the college's graduation speakers.

"We don't label the student speaker as a valedictorian," explains Boyle. "But it happens that Yusef has a 4.0, and he's got a really interesting story to tell."

Pierce is in his early 30s and is a bit of a nerd and a class leader. He also writes poetry and paints. "It is true that oppression often requires that individuals make themselves extraordinary in order to simply survive," reads his artist's statement in an online exhibit of his work. "My paintings are entire conversations on canvas."

Eventually, he says, he wants to be a college professor, working with formerly incarcerated students.

"So he wants my job," says Boyle, laughing, "and he'd be much better at it than I am."

Boyle serves as the academic adviser to all of the incarcerated students, and he has become a mentor to Pierce, navigating him through the graduation process. In one of the last classes of the semester, Boyle hosts an impromptu fashion show, wearing his own blue cap and gown, backing away from the camera to give the onlooking students a full view of his outfit.

The guys inside cheer and whistle. "Do a spin," one guy shouts. "Beautiful! Beautiful!" another yells.

As the cheering dies down, Boyle looks for Pierce on the screen. "He doesn't know this, so it may be a slight surprise," he tells the class, "but, Yusef, you will also be receiving these cords." He drapes dark orange cords around his shoulders. "These cords are for students who graduate with honors in their degrees. Congratulations, Yusef, you are going to graduate with honors."

***

The story of how Yusef Pierce wound up in these college classes, wound up inside prison at all, starts with trauma. When he was a teen, his older brother was shot and killed. "He was murdered in the front yard of our home, right in front of my face," he explains, "and so I had to call my mom and let her know what had happened." All these years later, it's still something he doesn't like to talk about. He considered putting it in his graduation speech, but took it out, worried it might be too much for his mom to hear.

"It had a traumatic effect on all of us," Drochelle Pierce tells me over the phone, from her house in Victorville, Calif. She remembers a change in Yusef around that time.

"It was just kind of one thing after another. He got into a little bit of trouble. He allowed people that he associated with to kind of influence him in a direction that really wasn't him." Yusef finished high school, but in his early 20s he was arrested and convicted of armed robbery. Drochelle Pierce says she was beside herself when she learned his sentence would be nearly 20 years. "I tell you, honestly, I never envisioned that Yusef would ever go to prison. Never, never. Never."

A few months into Yusef's prison sentence, she wrote him a letter. "What's done is done," she wrote. "You, now more than ever, must diligently seek and obtain higher education."

It wasn't a new message. Education had always been at the center of her relationship with Yusef. When he was young, he remembers riding in the car with his mom, a sociology textbook open on his lap. "She wouldn't let me turn on the radio," he says. "She would make me read to her."

"Oh, I made [my kids] read everything," Drochelle Pierce says. "If they read it out loud, I knew they were reading it. That's the only way I would know that they were actually reading anything."

Today, the two talk on the phone nearly every day. "He was always a deep thinker," says Pierce. She knows she sounds like a typical proud mother, but she can't help it: "Yusef is very smart."

In California, college classes can shorten a prison sentence. So when the opportunity first arose for Yusef Pierce to take courses in prison, it felt like simply a means to an end. "I just want to get home sooner," he remembers joking with a friend at the time. "If they gave us time off for going to college, I would walk out of here with a Ph.D.!"

But by the time Pitzer College started offering classes for a bachelor's degree, Pierce found to his surprise that he really liked college.

"I loved it because it gave me validation," he says. "To know that somebody was reading my stuff and that somebody felt like the things that I was thinking about and writing were worth something. I got really addicted to that validation, and it just really turned me into an overachiever. And I just took class after class after class."

That drive paid off.

After writing and rewriting a number of drafts, on May 15 Pierce delivered his final graduation speech to hundreds of Pitzer graduates and their family members and friends. The content he landed on? That letter his mom sent him all those years ago.

"I realize now that I've saved this letter because it was meant for me way back then to share it with you all today," he says, dressed in his white cap and gown, draped in a kente stole, with the prison classroom where he has spent so much time in the background. "It reads, 'Dear son, I was so glad to see you Monday ...' "

As he reads the letter aloud, he gets to the part where his mother, a big poetry fan, included the lines from Invictus, a poem by William Ernest Henley. Pierce looks directly into the camera as he reads; he knows this part by heart.

Out of the night that covers me,
Black as the Pit from pole to pole,
I thank whatever gods may be
For my unconquerable soul.

In the fell clutch of circumstance
I have not winced nor cried aloud.
Under the bludgeonings of chance
My head is bloody, but unbowed.

Beyond this place of wrath and tears
Looms but the Horror of the shade,
And yet the menace of the years
Finds, and shall find, me unafraid.

It matters not how strait the gate,
How charged with punishments the scroll,
I am the master of my fate:
I am the captain of my soul.

Drochelle Pierce watched the speech on her laptop at home, with family gathered around. "We were all crying. We were just boohooing. It was just so sweet," she says.

The final line of the poem:

It matters not how strait the gate, / How charged with punishments the scroll, / I am the master of my fate: / I am the captain of my soul.

"I love that so much," she says. "I sent that to my son because I wanted him to think in terms of 'OK, here you are now. What happens to you from this point going forward, it really depends on you.' "

She is proud of her son and inspired by him too. "Look what he did. He turned a bad situation into something very, very positive. Here he is, graduating with his degree."

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

Although there is evidence of harmful health and ecological effects associated with exposure to high doses of chemicals known as hormonally active agents – or endocrine disrupters – little is understood about the harm posed by exposure to the substances at low concentrations, such as those that typically exist in the environment, says a new report from a National Research Council committee.

Insufficient evidence exists to support claims that taking megadoses of dietary antioxidants, such as selenium and vitamins C and E, or carotenoids, including beta-carotene, can prevent chronic diseases, says the latest report on Dietary Reference Intakes (DRIs) from the Institute of Medicine of the National Academies.

To meet the bodys daily energy and nutritional needs while minimizing risk for chronic disease, adults should get 45 percent to 65 percent of their calories from carbohydrates, 20 percent to 35 percent from fat, and 10 percent to 35 percent from protein.