Two methods for reconstructing intragranular strain fields are developed for scanning three-dimensional X-ray diffraction (3DXRD). The methods are compared with a third approach where voxels are reconstructed independently of their neighbours [Hayashi, Setoyama & Seno (2017). Mater. Sci. Forum, 905, 157–164]. The 3D strain field of a tin grain, located within a sample of approximately 70 grains, is analysed and compared across reconstruction methods. Implicit assumptions of sub-problem independence, made in the independent voxel reconstruction method, are demonstrated to introduce bias and reduce reconstruction accuracy. It is verified that the two proposed methods remedy these problems by taking the spatial properties of the inverse problem into account. Improvements in reconstruction quality achieved by the two proposed methods are further supported by reconstructions using synthetic diffraction data.

Single-crystalline-like thin films composed of crystallographically aligned grains are a new prototype of 2D materials developed recently for low-cost and high-performance flexible electronics as well as second-generation high-temperature superconductors. In this work, significant texture improvement in single-crystalline-like materials is achieved through growth of a 330 nm-thick silver layer.

An algorithm, based on the matching of q-vectors pairs, is combined with three-dimensional pattern matching using a nearest-neighbors approach to index Laue and monochromatic serial crystallography data recorded on small unit cell samples.

A software package for Grazing Incident Wide Angle X-ray Scattering (GIWAXS) geared toward weakly ordered materials, including: scattering intensity normalization/uncertainty, scattering pattern indexing, and refractive shift correction.

Structural investigations of amorphous and nanocrystalline phases forming in solution are historically challenging. Few methods are capable of in situ atomic structural analysis and rigorous control of the system. A mixed-flow reactor (MFR) is used for total X-ray scattering experiments to examine the short- and long-range structure of phases in situ with pair distribution function (PDF) analysis. The adaptable experimental setup enables data collection for a range of different system chemistries, initial supersaturations and residence times. The age of the sample during analysis is controlled by adjusting the flow rate. Faster rates allow for younger samples to be examined, but if flow is too fast not enough data are acquired to average out excess signal noise. Slower flow rates form older samples, but at very slow speeds particles settle and block flow, clogging the system. Proper background collection and subtraction is critical for data optimization. Overall, this MFR method is an ideal scheme for analyzing the in situ structures of phases that form during crystal growth in solution. As a proof of concept, high-resolution total X-ray scattering data of amorphous and crystalline calcium phosphates and amorphous calcium carbonate were collected for PDF analysis.

This work studies the elastic scattering behavior of electron vortices when propagating through amorphous samples. A formulation of the multislice approach in cylindrical coordinates is used to theoretically investigate the redistribution of intensity between different angular momentum components due to scattering. To corroborate and elaborate on our theoretical results, extensive numerical simulations are performed on three model systems (Si3N4, Fe0.8B0.2, Pt) for a wide variety of experimental parameters to quantify the purity of the vortices, the net angular momentum transfer, and the variability of the results with respect to the random relative position between the electron beam and the scattering atoms. These results will help scientists to further improve the creation of electron vortices and enhance applications involving them.

The Trump administration asked the Supreme Court to block Congress from seeking the materials, saying, "The government will suffer irreparable harm absent a stay."; Credit: Andrew Harnik/AP

The Supreme Court has temporarily put on hold the release of redacted grand jury material from the Russia investigation to a House panel.

The Trump administration is trying to block the release.

Last October, a district court judge ruled the Justice Department had to turn over the materials, which were blacked out, from former special counsel Robert Mueller's report into Russian interference in the 2016 election.

An appeals court upheld the decision, but the Trump administration, hoping to keep the evidence secret, appealed to the Supreme Court.

Chief Justice John Roberts' order temporarily stops the process. Lawyers for the House Judiciary Committee have until May 18 to file their response to the Justice Department's attempts to keep the materials from the House panel.

The Justice Department had until Monday to turn over the material following the appeals court order. But on Thursday, the Trump administration asked the Supreme Court to block Congress from seeking it, saying, "The government will suffer irreparable harm absent a stay."

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

A 2018 exhibit at the Billy Ireland Cartoon Library & Museum at Ohio State University celebrated the artistic legacy of MAD magazine.; Credit: Andrew Welsh-Huggins/AP

The funny, freckled face of Alfred E. Neuman is more or less retiring.

One of the last widely circulated print satirical magazines in America will leave newsstands after this year, according to sources at DC Comics, which publishes MAD magazine.

While the Harvard Lampoon remains in business, The Onion hasn't been in print since 2013. The once-influential Spy was a casualty of the 1990s.

At MAD's peak in the early 1970s, more than 2 million people subscribed to it, both for its pungent political humor and deeply adolescent jokes.

In 2017, that number had reportedly dropped to 140,000.

MAD isn't completely shutting down, but it will be radically downsized and changed.

Readers will only be able to find the 67-year-old humor magazine at comic book stores and through subscriptions.

After issue No. 10 this fall, there will no longer be new content, except for end-of-year specials which will be all new. Starting with issue No. 11, the magazine will feature classic, best-of and nostalgic content, repackaged with new covers.

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

The Trump administration asked the Supreme Court to block Congress from seeking the materials, saying, "The government will suffer irreparable harm absent a stay."; Credit: Andrew Harnik/AP

The Supreme Court has temporarily put on hold the release of redacted grand jury material from the Russia investigation to a House panel.

The Trump administration is trying to block the release.

Last October, a district court judge ruled the Justice Department had to turn over the materials, which were blacked out, from former special counsel Robert Mueller's report into Russian interference in the 2016 election.

An appeals court upheld the decision, but the Trump administration, hoping to keep the evidence secret, appealed to the Supreme Court.

Chief Justice John Roberts' order temporarily stops the process. Lawyers for the House Judiciary Committee have until May 18 to file their response to the Justice Department's attempts to keep the materials from the House panel.

The Justice Department had until Monday to turn over the material following the appeals court order. But on Thursday, the Trump administration asked the Supreme Court to block Congress from seeking it, saying, "The government will suffer irreparable harm absent a stay."

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

Using ???cool??? materials to construct roads and walkways is an effective way of lowering urban temperatures to make cities more comfortable in hot weather. According to a recent study, surface temperatures were reduced by 12??C and ambient temperatures were reduced by 1.9??C after cool pavements were installed in a city park in Greece.

A recent study has described a simple method to screen the toxicity of materials used in consumer products. Using utility meter products as examples, the study found, for example, that stainless steel and polyvinyl chloride (PVC) had high toxicity potentials and suggests less toxic, but equally effective and priced, alternatives that could be used instead.

A recent study has compared the environmental impact of a range of building materials. Energy consumption, carbon dioxide emissions and water demand can all be reduced by switching to renewable sources of energy, improving technologies and promoting eco-friendly alternative materials.

Nanomaterials – at a scale of one thousand times smaller than a millimetre – offer the promise of radical technological development. Many of these will improve our quality of life, and develop our economies, but all will be measured against the overarching principle that we do not make some error, and harm ourselves and our environment by exposure to new forms of hazard. This Thematic Issue explores recent developments in nanomaterials research, and possibilities for safe, practical and resource-efficient applications.

A recent study has analysed risks to European renewable industries from the Chinese supply of critical raw materials. The offshore wind sector was found to be the most vulnerable of the renewable industries to supply risks. EU and industry strategies should be able to deal with these supply risks in the short term, but there are potential long-term risks to solar and wind sectors. The development of alternative technologies less reliant on these raw materials, and methods to recycle these materials is, therefore, a priority.

A recent study has investigated how taxes on virgin raw materials used in construction, such as gravel and sand, have reduced the use of these resources, based on experiences in Denmark, Sweden and the UK. However, greater incentives to recycle these materials are still needed, says the study.

Recycled waste material could play a major role in the construction of roads in Europe, bringing both environmental and economic benefits. A new study proposes a scenario where 50% of the asphalt for Europe’s roads consists of recycled materials, leading to significant reductions in costs, energy use and greenhouse gas emissions.

The development of future recycling technologies must be informed by data about products and materials that will enter the waste stream, but such forecasts are subject to a high level of uncertainty. In this study, researchers have proposed a methodology for predicting emerging waste materials, applying it to silicon-based photovoltaic (PV) panels. The findings show that closed-loop recycling — when post-consumer waste is recycled to make new products — of PV panel materials could mitigate up to 0.2% of the annual environmental impact of Flanders1, Belgium, if suitable technology was developed.

Researchers have found that natural materials, such as plant fibres or wool, can be used to construct sustainable sound absorbers that help prevent noise pollution, which are as effective as conventional absorbers made from combinations of minerals and plastics.

A new review examines the potential uses and scientific, technical and manufacturing problems facing ‘van der Waals heterostructures’ - an emerging science which uses building block-like nanomaterials. Van der Waals heterostructures are nanomaterials built by layering different materials, each one atom thick, on top of each other, to create materials with unique properties and uses.

A new study lists 10 factors to help create a closed-loop supply chain for critical materials. However, interviews with key actors in supply chains for photovoltaic (PV) panels and wind turbines suggest that manufacturers and recyclers hold different perspectives on these factors. The research highlights the importance of cooperation between supply-chain actors, as well as investment in technologies and infrastructure for closed-loop supply chains.

In the automobile industry, the development and manufacture of increasingly complex technological components — catalytic converters, LEDs, electric motors, batteries — requires increasingly complex and diverse raw materials with specific qualities. The technological and economic importance of these materials, combined with their vulnerability to supply shortages and likelihood of supply interruptions, indicates their ‘criticality’. This study uses a new methodology to explore the criticality of 27 key metals used in the automotive industry and other sectors, and highlights six that are especially vulnerable: rhodium, dysprosium, neodymium, terbium, europium and praseodymium. The researchers found there was limited recycling and substitution of these metals and a high possibility of restrictions to their supply.

Kraus, Edward Henry, 1875-1973

The extraction, trade and consumption of materials, such as biomass, minerals, metals and fossil fuels, are the main drivers of most global environmental problems, according to a new report. Action must be taken now to achieve the policy target of a global ‘green economy’.

The extraction, trade and consumption of materials, such as biomass, minerals, metals and fossil fuels, are the main drivers of most global environmental problems, according to a new report. Action must be taken now to achieve the policy target of a global ‘green economy’.

With ever-increasing global consumption, the impacts of resource depletion, land use change and pollution are being felt worldwide. A new study reveals how international trade is shifting the environmental burden from the consuming nation to other parts of the world, and calls for changes in the way national material use is accounted for.

An overview of ‘material efficiency’ is provided in a recent study, which assesses a range of technical and sociological approaches to material efficiency. The need for drastic efficiency improvements is highlighted by the researchers, as well as cuts in the total amount of materials used.

A new tool to help planners choose urban designs that positively influence flows of energy, carbon, water and pollutants in cities is presented in a recent study. It is designed to integrate scientific knowledge into the planning process and support cities in achieving sustainability objectives.

When broken down, ships can release hazardous substances into the environment. This study investigated the environmental impact of shipbreaking in one of Europe’s few ship recycling yards, based in Portugal. The results reveal large differences between assessment methods and show that environmental impact depends on composition rather than size or class.

An inventory of materials used in ship construction could minimise waste and increase ships’ recycling rates and resale value, according to the Sustainable Shipping Initiative (SSI). Although extra data management would be required on the part of suppliers, manufacturers and owners, it would help make the industry more efficient and future-proof with regard to developments in international legislation on ship building.

International trade has increasingly relied on material resources since the 1990s, according to a new study. The research used the most detailed global computer model available for capturing the effects of international trade on the environment and on the efficiency of resource use between 1995–2011. Sharp increases in the trade of cheap ‘fast fashion’ and mass market electronics are highlighted as two of the fastest growing drivers of this change in material inefficiency.

A more circular economy could reduce global levels of raw material extraction by 10% by 2030, a new study suggests. It could also drive a slight increase in overall employment levels, but the types of jobs available would change significantly, moving away from low- and medium-skilled work in the manufacturing and mining sectors and opening up more opportunities for medium- and high-skilled jobs in the service sector.

A low cost, low energy method to disinfect water using electricity has been developed by researchers by combining carbon nanotubes (CNTs) and silver nano-wires with existing materials. The technology has the potential to be used in portable disinfection devices in developing countries.

Initial batches have been supplied in Chennai, while some were in the process of being scaled up towards mass production for use in hospitals and clinics across the country.

A new study by Swiss researchers has attempted to predict nanomaterial concentrations in the environment. However, the researchers say more data on environmental toxicity are needed before we can make accurate assessments of potential environmental risks from nanomaterials.

Electronic waste (e-waste) contains a large variety of heavy metals which threaten the environment and human health. New research has assessed environmental and technological preferences for materials in products of individuals within the US electronics industry. Strict international legislation, such as the EU's RoHS Directive, was found to reduce the use of lead for companies that market their products abroad.

A new study has examined contamination of fully grown soybean plants by two nanomaterials – nano-cerium oxide and nano-zinc oxide. The results could be concerning, as they indicate that the nanomaterials are absorbed by plants, possibly affecting growth, yield, and the fixation of nitrogen in soil, an important ecosytem service.

A recent study has described a simple method to screen the toxicity of materials used in consumer products. Using utility meter products as examples, the study found, for example, that stainless steel and polyvinyl chloride (PVC) had high toxicity potentials and suggests less toxic, but equally effective and priced, alternatives that could be used instead.

The overall ecological impact of 10 engineered nanomaterials has been modelled for the first time using toxicity data from multiple living species. These models will allow researchers to assess the effect nanomaterials may have on both ecosystems and people.

Weathering of treated wood and other construction materials can lead to the release of chemicals into the environment. Researchers have investigated the release of biocides from wood and roof paints, demonstrating that the amount of water in contact with exposed surfaces is a key factor in determining the level of active chemicals released. The study provides guidance for testing biocidal products in line with the European Biocidal Products Regulation.

A recent study has evaluated frameworks and tools used in Europe to assess the potential health and environmental risks of manufactured nanomaterials. The study identifies a trend towards tools that provide protocols for conducting experiments, which enable more flexible and efficient hazard testing. Among its conclusions, however, it notes that no existing frameworks meet all the study’s evaluation criteria and calls for a new, more comprehensive framework.

Judging whether to replace a hazardous conventional chemical in a product with a nanomaterial — i.e. to assess which is the safer alternative — is challenging for many reasons. A new study suggests that chemical-alternative assessment frameworks could be adapted to better assess engineered nanomaterials with the help of new tools which provide data on hazards of, and exposure to, nanomaterials.

Neonicotinoids are pesticides applied to plants to protect them from insects. The use of neonicotinoids may lead to contamination of aquatic environments through, among other routes, the input of contaminated plant material into waterways. While it is well established that direct exposure to contaminated water endangers aquatic invertebrates, scientists have now published findings indicating that dietary exposure through the consumption of contaminated plant material puts leaf-shredding species at increased risk. The researchers recommend that policymakers registering systemic insecticides (those whose active ingredients are transported throughout the plant tissues) consider dietary exposure, and its potential implications for ecosystem integrity, in addition to other exposure pathways.

If the EU is to combat resource scarcity, it is necessary to develop and refine strategies for substituting raw materials with sustainable alternatives, such as recovered by-products from waste. A recent study presents a new approach for evaluating the sustainability of raw materials’ substitutions, based on the quantification of the embodied energy (energy required to produce the material from ores and feedstock) and carbon dioxide footprint (greenhouse gasses produced and released into the atmosphere during the production of the material) of both the raw material and its proposed substitute. The evaluation method has been applied to a real case, where it indicates that substituting a raw material (calcite) with stabilised fly ash for use as a filler in polypropylene composites in plastic manufacturing may be sustainable. The study also highlights the need for additional policy tools and legislation to encourage Europe’s transition towards a circular economy.

Researchers have presented an extensive analysis of the role of nanomaterials in environmental remediation and monitoring. Nanomaterials can be used to clean up toxins and bacteria from natural waters, wastewaters and the air.

European buildings built in the 1950s, 60s and 70s may contribute towards levels of toxins in the body, a new study suggests. Polychlorinated biphenyls (PCBs) were found at elevated levels in children that lived in houses and studied in schools built during this period, before PCBs were more thoroughly regulated in the construction industry. Although food is generally a more concentrated source of these toxins, the authors say exposure through these environments should be minimised wherever possible.

Engineering at the nanoscale brings the promise of radical technological development — clean energy, highly effective medicines and space travel. But technology at this scale also brings safety challenges. Nano-sized particles are not inherently more toxic than larger particles, but the effects are complex and vary based on particle properties as well as chemical toxicity. This Report brings together the latest science on environmental safety considerations specific to manufactured nanoscale materials, and some possible implications for policy and research.

Researchers have analysed the ability of two organic nanomaterials to remove the heavy metal chromium from water. In the laboratory, the nanomaterials successfully took up around 95% of the chromium. Further work is needed to confirm the feasibility of using these nanomaterials to purify water in real-world conditions.

Although nanomaterials are already in widespread use, their risk to the environment is not completely understood. Researchers in the US have developed a next-generation risk-assessment model to better understand nanomaterials’ environmental impact. Applied to the San Francisco Bay area, the model predicted that even soluble nanomaterials could accumulate at toxic levels.

A 45-year-old man will face Melbourne Magistrate’s Court today, charged in relation to child abuse material offences.