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Science News for August 2, 2017


UC Nephrology director addresses acute kidney injury as journal guest editor

Charuhas Thakar, a leading expert on acute kidney injury (AKI), has addressed the treatment challenges of AKI as a guest editor for the Advances in Chronic Kidney Disease Journal. Thakar emphasizes the need to view AKI not only as a patient-centric issue but also as a systems quality issue that affects the entire healthcare system.

SourceUniversity of Cincinnati·JournalAdvances in Chronic Kidney Disease·DateAug 2, 2017

Deciphering potent DNA toxin's secrets

A team of Vanderbilt University researchers has worked out the molecular details of Yatakemycin (YTM), a potent bacterial toxin that prevents DNA replication. The study reveals how YTM stabilizes DNA, making it resistant to repair mechanisms, and could be used to fine-tune its antimicrobial properties.

SourceVanderbilt University·JournalNature Chemical Biology·DateAug 2, 2017

Food fight: Children's temperaments help predict dinnertime struggles

A study found that infants with inhibited temperaments are more likely to be hesitant when trying new foods, while those with exuberant temperaments tend to accept new foods. Researchers observed infant reactions to new toys and food throughout the first 18 months, finding a consistent relationship between temperament and eating behavior.

SourcePenn State·JournalChild Development·DateAug 2, 2017

Alkaline soil, sensible sensor

Researchers developed a portable x-ray fluorescence spectrometry (PXRF) device to measure calcium levels in soils. The device provides accurate data on 20 elements in 60 seconds, improving field assessments for soil scientists.

SourceAmerican Society of Agronomy·JournalSoil Science Society of America Journal·DateAug 2, 2017

An app for the perfect selfie

A smartphone app developed by computer scientists at the University of Waterloo uses an algorithm to direct users on camera positioning for optimal photos. The app, which has shown a 26% improvement in selfie quality, teaches users about composition principles and can be expanded to include additional factors.

Clarifiying complex chemical processes with quantum computers

Researchers from ETH Zurich and Microsoft Research demonstrate that quantum computers can evaluate complex chemical reactions scientifically relevant results. Quantum computers can potentially calculate the reaction mechanism of nitrogenase step by step, but they will serve as a supplement to classical computers.

SourceETH Zurich·JournalProceedings of the National Academy of Sciences·DateAug 2, 2017

Cracking the code of megapests

Scientists have identified over 17,000 protein coding genes in the genomes of two closely related megapests, providing a detailed understanding of their genetics and potential weaknesses. This information could lead to the development of new pest management strategies and reduce control costs by billions of dollars annually.

Millions may face protein deficiency as a result of human-caused carbon dioxide emissions

A new study from Harvard T.H. Chan School of Public Health finds that rising CO2 levels may lead to a decline in the nutritional value of staple crops, increasing the risk of dietary deficiencies among vulnerable populations. The study estimates that up to 150 million people may be at risk of protein deficiency due to elevated CO2 levels.

SourceHarvard T.H. Chan School of Public Health·JournalEnvironmental Health Perspectives·DateAug 2, 2017

Where there's fire, there's smoke -- and social media

A Colorado State University study shows a strong correlation between Facebook posts about visible smoke and commonly used datasets for estimating smoke exposure. The researchers found that Facebook was a better tool than satellite data in pinpointing smoke exposure, with daily maps of Facebook posts matching standard smoke monitoring s...

SourceColorado State University·JournalAtmospheric Chemistry and Physics·DateAug 2, 2017

Marriage of microscopy techniques reveals 3-D structure of critical protein complex

Researchers at the Stowers Institute have solved the three-dimensional structure of the synaptonemal complex, a critical protein complex that ensures proper chromosome sorting during meiosis. The structure is composed of two railroad tracks stacked on top of each other, connecting homologous chromosomes and ensuring smooth cell division.

SourceStowers Institute for Medical Research·JournalProceedings of the National Academy of Sciences·DateAug 2, 2017

From a memory too strong to a memory too weak

Researchers at the University Medical Center Goettingen identified a molecular link between PTSD and Alzheimer's disease, specifically Formin 2. Formin 2 mutant mice show PTSD phenotypes at an early age and develop age-related memory decline.

SourceEMBO·JournalThe EMBO Journal·DateAug 2, 2017

'Sherlock' and the case of narrative perception

The study found that brain activity in regions called the default mode network represent a kind of higher-level processing, building up representations of what's happening in the world around us. Participants who had previously watched the 'Sherlock' episode could anticipate events and recall them in the same order, suggesting that chu...

SourceCell Press·JournalNeuron·DateAug 2, 2017

A dolphin diet

Marine biologists analyzed three dolphin species' diets, revealing overlap in feeding ecology despite differences in hunting strategies. The research provides valuable insights for conservation and management of dolphin populations worldwide.

What flowers looked like 100 million years ago

A new study reconstructs the evolution of flowers and sheds light on what the earliest flowers might have looked like. The ancestral flower was bisexual, with both female and male parts, and multiple whorls of petal-like organs. This new model offers a plausible scenario to explain the spectacular diversity of floral forms.

SourceUniversity of Vienna·JournalNature Communications·DateAug 2, 2017

Update on the Larsen-C iceberg breakaway

The largest remaining ice shelf on the Antarctic Peninsula has lost 10% of its area after a giant iceberg four times the size of London broke free. Dr Anna Hogg and Dr Hilmar Gudmundsson tracked the iceberg using satellite technology, revealing that it has started to drift away from the Larsen-C and formed smaller icebergs.

SourceUniversity of Leeds·JournalNature Climate Change·DateAug 2, 2017

Prescription opioids often go unused after surgery

A study published in JAMA Surgery found that more than two-thirds of patients reported unused prescription opioids after surgery, highlighting an important source for nonmedical use. The study also revealed low rates of safe storage and disposal practices, contributing to opioid-related injuries and deaths.

SourceJAMA Network·JournalJAMA Surgery·DateAug 2, 2017