Smithsonian scientists have discovered two new gecko species—the Lenya banded bent-toed gecko (Cyrtodactylus lenya) and Tenasserim Mountain bent-toed gecko (C. payarhtanesnsis)—in the little-studied lowland forests […]

The post Smithsonian Scientists Discover Two New Gecko Species in Vanishing Myanmar Rainforest appeared first on Smithsonian Insider.

In the structure of the title salt, second-order Jahn–Teller distortion of the coordination octa­hedra around V ions is reflected by coexistence of short V—O bonds and trans-positioned long V—F bonds, with four equatorial V—F distances being inter­mediate in magnitude. Hydrogen bonding of the anions is restricted to F-atom acceptors only, with particularly strong N–H⋯F inter­actions [N⋯F = 2.5072 (15) Å] established by axial and cis-positioned equatorial F atoms.

The crystal structure of vanthoffite, Na6Mg(SO4)4, was redetermined and refined with anisotropic displacement parameters for all atoms. Here, for the first time, we give its detailed description.

The crystal structure of vanthoffite {hexasodium magnesium tetrakis[sulfate(VI)]}, Na6Mg(SO4)4, was solved in the year 1964 on a synthetic sample [Fischer & Hellner (1964). Acta Cryst. 17, 1613]. Here we report a redetermination of its crystal structure on a mineral sample with improved precision. It was refined in the space group P21/c from a crystal originating from Surtsey, Iceland. The unique Mg (site symmetry overline{1}) and the two S atoms are in usual, only slightly distorted octahedral and tetrahedral coordinations, respectively. The three independent Na atoms are in a distorted octahedral coordination (1×) and distorted 7-coordinations intermediate between a `split octahedron' and a pentagonal bipyramid (2×). [MgO6] coordination polyhedra interchange with one half of the sulfate tetrahedra in <011> chains forming a (100) meshed layer, with dimers formed by edge-sharing [NaO7] polyhedra filling the interchain spaces. The other [NaO7] polyhedra are organized in a parallel layer formed by [010] and [001] chains united through edge sharing and bonds to the remaining half of sulfate groups and to [NaO6] octahedra. The two types of layers interconnect through tight bonding, which explains the lack of morphological characteristics typical of layered structures.

In the structure of the title salt, (C7H12N6)[VOF5], second-order Jahn–Teller distortion of the coordination octahedra around V ions is reflected by coexistence of short V—O bonds [1.5767 (12) Å] and trans-positioned long V—F bonds [2.0981 (9) Å], with four equatorial V—F distances being intermediate in magnitude [1.7977 (9)–1.8913 (9) Å]. Hydrogen bonding of the anions is restricted to F-atom acceptors only, with particularly strong N–H...F interactions [N...F = 2.5072 (15) Å] established by axial and cis-positioned equatorial F atoms. Hirshfeld surface analysis indicates that the most important interactions are overwhelmingly H...F/F...H, accounting for 74.4 and 36.8% of the contacts for the individual anions and cations, respectively. Weak CH...F and CH...N bonds are essential for generation of three-dimensional structure.

Yaya Wang
Apr 7, 2020; 133:jcs228072-jcs228072
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Recent strides in biotechnology offer the promise of new and innovative applications -- from edible vaccines to protein-based electronics components.

High schools that successfully engage students in learning have many things in common.

On average, Americans die sooner and experience higher rates of disease and injury than people in other high-income countries, says a new report from the National Research Council and Institute of Medicine.

A new report from the National Academies of Sciences, Engineering, and Medicine identifies six promising practices to improve health care for individuals with social risk factors for poor health care outcomes, such as people who are in a low socio-economic position, reside in disadvantaged neighborhoods, identify as a racial or ethnic minority, or possess limited health literacy.

A new report from the National Academies of Sciences, Engineering, and Medicine says that Medicare’s value-based payment programs could take into account social risk factors – such as low socio-economic position, residence in disadvantaged neighborhoods, or race and ethnicity – but any proposal to do so will entail both advantages and disadvantages that need to be carefully considered.

The burdens of poor health and the benefits of good health and well-being are inequitably distributed in the U.S. due to factors that range from poverty and inadequate housing to structural racism and discrimination, says a new report from the National Academies of Sciences, Engineering, and Medicine.

The U.S. DRIVE Partnership – a government-industry partnership that fosters the development of precompetitive and innovative technologies for clean and efficient light-duty vehicles – has made significant progress in many technical areas including advanced combustion technologies, durability and cost of hydrogen fuel cells, and electric drive systems such as motors, power electronics, and batteries, says a new report by the National Academies of Sciences, Engineering, and Medicine.

Synthetic biology expands the possibilities for creating new weapons — including making existing bacteria and viruses more harmful — while decreasing the time required to engineer such organisms, concludes a new report by the National Academies of Sciences, Engineering, and Medicine.

A new report from the National Academies of Sciences, Engineering, and Medicine identifies the most promising scientific breakthroughs that are possible to achieve in the next decade to increase the U.S. food and agriculture system’s sustainability, competitiveness, and resilience.

The Gulf Research Program (GRP) of the National Academies of Sciences, Engineering, and Medicine today announced awards for nine new grant projects totaling $3.2 million.

The Gulf Research Program (GRP) of the National Academies of Sciences, Engineering, and Medicine today announced it will award up to $10 million through a new funding opportunity to support research projects that will advance understanding and facilitate improvement of safety culture in the offshore oil and gas industry.

Following recommendations from a National Academies of Sciences, Engineering, and Medicine report released earlier this year, the National Academies’ Gulf Research Program (GRP) is developing a long-term research campaign to improve understanding and prediction of the Gulf of Mexico Loop Current System (LCS).

The Gulf Research Program (GRP) of the National Academies of Sciences, Engineering, and Medicine today announced a new funding opportunity to provide up to $2.5 million in grants to foster innovative approaches that support its ongoing efforts to improve understanding and prediction of the Gulf of Mexico Loop Current System (LCS).

The Gulf Research Program (GRP) of the National Academies of Sciences, Engineering, and Medicine today announced a new funding opportunity under its Healthy Ecosystems Initiative.

Summer is a chance for children and youth to continue developing, but for those living in disadvantaged communities, summertime experiences can lead to worse health, social, emotional, academic, and safety outcomes, says a new report from the National Academies of Sciences, Engineering, and Medicine.

The Gulf Research Program (GRP) of the National Academies of Sciences, Engineering, and Medicine today announced $7.25 million in grant awards for eight projects focused on strengthening safety culture in the offshore oil and gas industry.

The National Academy of Sciences, in partnership with The Kavli Foundation and the Alfred P. Sloan Foundation, will host a symposium to consider the future of science in the U.S. and how it can best serve society in the 21st century.

Peter Epstein of Epstein Research discusses the macro picture for precious metals prices and one junior that he believes will benefit from higher prices.

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Millions of years ago, Africa's savannas were covered with thick, ancient forests, which disappeared and turned into the grassy ecosystems that they are today.

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A successful circular economy for valuable metals needs more than just effective recycling technologies, as a new study shows. The research, which explored the governance of recovering vanadium from steel-industry waste, revealed that industry stakeholders feel the prospect of financial gain, or reduced costs, through recovery is too distant at present. This perception could hinder a circular economy for critical materials from industrial residue, the study warns.

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.

The environmental benefits of cleaner, more efficient transport may be offset by increasing distances travelled by passengers and goods, according to a new report by the European Environmental Agency (EEA). The report suggests that technology needs to go hand-in-hand with a policy package that improves, avoids and shifts transport emissions.

Wenz, John, author

To believe that China will have a significant advantage due to its population size requires us to believe that each additional user adds as much to an informational ecosystem as the first one.

With the emerging synergy between hybrid cloud and AI, we will witness tremendous innovation and business value in the enterprise IT world.

A risk-based tool built using multi-criteria decision analysis has been developed to rank environmental contaminants, giving each a level of concern. It can be used by decision makers to prioritise areas for further assessments, based on expected human health impacts.

To assess the risk posed by metals in the aquatic environment, Biotic Ligand Models (BLMs) were developed, and are now considered suitable for use in regulatory risk assessments. This study reviews the advantages of BLMs and BLM-based software tools, providing examples from across the EU, and offers recommendations for their widespread implementation.

VAUXHALL has released the first pictures of the Vivaro-e, its first factory-built, fully-electric van, set to arrive in the market as more and more UK cities welcome emissions-free vehicles.

VAUXHALL has released the first pictures of the Vivaro-e, its first factory-built, fully-electric van, set to arrive in the market as more and more UK cities welcome emissions-free vehicles.

FREDERICKSBURG, Va. – The Virginia Department of Transportation (VDOT) will open the new overpass on Mudd Tavern Road tomorrow , Oct. 23  in...

Join Copper House on Saturday, November 2, for a colourful celebration at their Day of the Dead Party.

Watford’s survival hopes have suffered another blow after they threw away a two-goal lead to lose 3-2 to ten-man Everton at the death at Vicarage Road.

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NTU Singapore, the Singapore National Eye Centre (SNEC), and the Singapore Eye Research Institute (SERI) have launched a joint laboratory that will develop advanced eye imaging technologies and drug delivery systems....

Shell has agreed to sell its Appalachia shale gas position to National Fuel Gas Co. for $541 million.

A new generation of do-it-yourselfers is bringing back a trend that started long ago with classic Volkswagens: turning standard vans into full-featured campers.

The melting was part of an annual summer thaw, typical in size and timing for the season.

Max, in exchange for a bit of household help, resides part-time on his elderly mother's rural property in a converted school bus.

The R.W. Lindholm Residence is the newest, but certainly not the first, Wright-designed structure to be relocated in its entirety.

Make its debut at the Ideal Home Show in London, the Quiet Treehouse includes an array of features that drown out modern life's most irritating noises.

Despite leading the charge for voluntary disclosure of fracking chemicals, Chesapeake Energy is now resisting revealing what was spilled during a blowout in Pen