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Science News for September 7, 2015


Molting elephant seals add mercury to coastal seawater

Researchers found that elephant seals shed significant amounts of mercury during molting, resulting in high concentrations of the toxic metal in coastal waters. The study reveals a previously unrecognized source of mercury contamination in coastal waters, highlighting the need for further monitoring and mitigation efforts.

SourceUniversity of California - Santa Cruz·JournalProceedings of the National Academy of Sciences·DateSep 7, 2015
Apple iPad Pro 11-inch (M4)

Apple iPad Pro 11-inch (M4) runs demanding GIS, imaging, and annotation workflows on the go for surveys, briefings, and lab notebooks.

Estrogen, shrubbery, and the sex ratio of suburban frogs

A Yale study reveals that suburban ponds experience a gender revolution due to elevated levels of estrogen in shrubbery and lawn areas. The research shows that female frogs outnumber males, likely caused by endocrine disruption from phytoestrogens produced by plants commonly found in lawns.

SourceYale University·JournalProceedings of the National Academy of Sciences·DateSep 7, 2015

Silicon nanoparticle is a new candidate for an ultrafast all-optical transistor

Physicists have developed a single silicon nanoparticle as an ultrafast all-optical transistor, enabling ultrafast switching and promising for optical computing. The study found that the nanoparticle's properties can be dramatically changed by irradiating it with intense laser pulses, allowing for control of light scattering direction.

SourceITMO University·JournalNano Letters·DateSep 7, 2015

Molecular bodyguards for immature membrane proteins

Scientists at University of Basel have shown how chaperones stabilize immature bacterial membrane protein FhuA and guide it in the right folding direction, preventing misfolding. This discovery has significant implications for diseases caused by misfolded proteins like Alzheimer's and cystic fibrosis.

SourceUniversity of Basel·JournalNature Structural & Molecular Biology·DateSep 7, 2015

Researchers in Basel develop ideal single-photon source

Physicists at the University of Basel have created a new type of light source that emits identical single photons, a crucial step towards quantum information technology. The breakthrough uses a semiconductor quantum dot to control nuclear spin, allowing for indistinguishable photons.

SourceUniversity of Basel·JournalNature Communications·DateSep 7, 2015
Apple iPhone 17 Pro

Apple iPhone 17 Pro delivers top performance and advanced cameras for field documentation, data collection, and secure research communications.

Policy recommendations for use of telemedicine in primary care

The American College of Physicians recommends policies for the use of telemedicine in primary care settings, aiming to improve access to care while balancing benefits and risks. The position paper offers more than a dozen policy statements and recommendations for utilization and reimbursement.

SourceAmerican College of Physicians·JournalAnnals of Internal Medicine·DateSep 7, 2015

Dangerous bacterial enzymes become important tools for protein chemistry

A Umeå University research group has identified two bacterial enzymes that can be used to modify proteins for use in medical drugs. The AnkX-Lem3 system allows for the addition and removal of a phosphocholine moiety, enabling fine-tuned control over protein function.

SourceUmea University·JournalAngewandte Chemie International Edition·DateSep 7, 2015

2015 International Balzan Prizes awarded to 3 Americans

Three American scientists have been awarded the prestigious International Balzan Prizes for their outstanding contributions to the fields of art history, economic history, astroparticle physics, and oceanography. Hans Belting, Joel Mokyr, Francis Halzen, and David Karl will share a total prize amount of $3 million.

SourceGold Communications·DateSep 7, 2015
Sony Alpha a7 IV (Body Only)

Sony Alpha a7 IV (Body Only) delivers reliable low-light performance and rugged build for astrophotography, lab documentation, and field expeditions.

Nanoparticles -- small but unique

Researchers at Chalmers University of Technology have developed a new experimental approach called plasmonic nanospectroscopy to study individual nanoparticles. This method reveals significant differences in properties between seemingly identical particles, which could lead to improved hydrogen sensors for fuel cell cars.

SourceChalmers University of Technology·JournalNature Materials·DateSep 7, 2015

Mobile phone records may predict epidemics of mosquito-borne dengue virus

A new study uses mobile phone records to predict the geographical spread and timing of dengue epidemics, providing critical early warning to policymakers. The model accurately forecasts outbreaks in locations of recent epidemics and emerging trouble spots, enabling national control programs to plan in near real time.

SourceHarvard T.H. Chan School of Public Health·JournalProceedings of the National Academy of Sciences·DateSep 7, 2015

Indications of the origin of the Spin Seebeck effect discovered

Scientists found thermally excited magnetic waves generate electricity in insulators with thin metallic layers. This breakthrough explains the Spin Seebeck effect, enabling heat recovery and conversion into electrical energy.

SourceJohannes Gutenberg Universitaet Mainz·JournalPhysical Review Letters·DateSep 7, 2015

Is old rock really as 'solid as a rock'?

Researchers used data from the Earth's gravity field, topography, seismology, and crustal structure to create a 3D model of the North American craton. The study found that the lower part of the craton's root has shifted by approximately 850 kilometers towards the west-southwest due to mantle flow.

SourceGFZ GeoForschungsZentrum Potsdam, Helmholtz Centre·JournalNature Geoscience·DateSep 7, 2015

Paper tubes make stiff origami structures

Researchers developed a new 'zippered tube' configuration that makes paper structures stiff enough to hold weight yet can fold flat. This technique could be applied to other thin materials to transform structures from furniture to buildings to microscopic robots.

SourceUniversity of Illinois at Urbana-Champaign, News Bureau·JournalProceedings of the National Academy of Sciences·DateSep 7, 2015
Aranet4 Home CO2 Monitor

Aranet4 Home CO2 Monitor tracks ventilation quality in labs, classrooms, and conference rooms with long battery life and clear e-ink readouts.

Widespread convergence in toxin resistance by predictable molecular evolution

A study by Liverpool School of Tropical Medicine researchers reveals that evolution can be highly predictable in terms of developing toxin resistance. Convergent evolution of two amino acid changes in a specific gene leads to the development of toxin resistance in various animals, including insects, reptiles, and mammals.

SourceLiverpool School of Tropical Medicine·JournalProceedings of the National Academy of Sciences·DateSep 7, 2015

Ancient genomes link early farmers to Basques

A team of researchers has discovered that early Iberian farmers are the closest ancestors to modern-day Basques, contradicting previous hypotheses. The study also reveals that farming was brought to Iberia by groups migrating to northern and central Europe, leading to admixture with local hunter-gatherer populations.

SourceUppsala University·JournalProceedings of the National Academy of Sciences·DateSep 7, 2015

PolyU develops novel efficient and low-cost semitransparent solar cells

Researchers at PolyU have created high-efficiency, low-cost semitransparent perovskite solar cells with graphene electrodes for BIPV applications. The PCEs reach up to 12% and show potential cost savings of over 50% compared to existing silicon-based solar panels.

SourceThe Hong Kong Polytechnic University·JournalAdvanced Materials·DateSep 7, 2015

'Clever adaptation' allows yeast infection fungus to evade immune system attack

Researchers discovered that Candida albicans, a deadly fungus, uses copper to fuel an enzyme designed to neutralize free radical attacks, but can switch to manganese when copper levels drop. This clever adaptation allows the fungus to survive in tissues like the kidney.

SourceJohns Hopkins Bloomberg School of Public Health·JournalProceedings of the National Academy of Sciences·DateSep 7, 2015
GQ GMC-500Plus Geiger Counter

GQ GMC-500Plus Geiger Counter logs beta, gamma, and X-ray levels for environmental monitoring, training labs, and safety demonstrations.

The right tree for the right place

The new vegetationmap4africa version provides a smartphone application and website to help users identify tree species and their uses. It aids in agroforestry and landscape restoration by providing information on suitable tree species for specific goods and services, as well as tools for regenerating degraded land.

SourceWorld Agroforestry Centre (ICRAF)·DateSep 7, 2015

Did grandmas make people pair up?

A recent study suggests that grandmothering played a crucial role in the development of human pair bonds, which distinguish us from other primates. With increasing human longevity, grandmothers helped feed their weaned children, allowing their daughters to have more kids and passing on genes.

SourceUniversity of Utah·JournalProceedings of the National Academy of Sciences·DateSep 7, 2015

Study shows common molecular tool kit shared by organisms across the tree of life

A study published in Nature has identified nearly 1,000 common protein complexes shared by most kinds of animals, revealing deep evolutionary relationships. These findings have significant implications for understanding the genetic basis of diseases such as Alzheimer's, Parkinson's, and cancer across different species.

SourceUniversity of Texas at Austin·JournalNature·DateSep 7, 2015

Poison in the Arctic and the human cost of 'clean' energy

Research from Harvard University suggests that flooding for hydroelectric development can increase methylmercury levels in Arctic ecosystems by up to 200 percent. The study found that freshwater from melting ice mixing with salt water creates a feeding zone for plankton that accumulates mercury and magnifies its effects on the food chain.

SourceHarvard John A. Paulson School of Engineering and Applied Sciences·JournalProceedings of the National Academy of Sciences·DateSep 7, 2015
Fluke 87V Industrial Digital Multimeter

Fluke 87V Industrial Digital Multimeter is a trusted meter for precise measurements during instrument integration, repairs, and field diagnostics.

Slipping and sliding to major tennis success

Engineers at the University of Sheffield are working with the ITF to create a handheld device that measures friction on tennis courts. This will enable professional players to understand and adjust their sliding movements, giving them an edge over their opponents.

SourceUniversity of Sheffield·DateSep 7, 2015

Tree of life study unveils inner workings of a cell

A multinational team of scientists created the world's largest protein map, revealing tens of thousands of new protein interactions that account for about a quarter of all estimated protein contacts in a cell. The map is helping researchers spot individual proteins that could be at the root of complex human disorders.

SourceUniversity of Toronto·JournalNature·DateSep 7, 2015

First superconducting graphene created by UBC researchers

UBC physicists successfully induce superconductivity in single-layer graphene by coating it with lithium atoms, opening up new possibilities for graphene electronics and nanoscale quantum devices. The breakthrough has significant cross-disciplinary impacts, with potential applications in computing, medicine, and sustainable energy.

SourceUniversity of British Columbia·JournalProceedings of the National Academy of Sciences·DateSep 7, 2015

Success combating multi-resistant bacteria in stables

Researchers at the University of Bonn successfully eliminated multi-resistant bacteria from a pig stable using radical hygiene measures, including frequent hand washing and quarantine. While MRSA was not eradicated, overall health improvement led to reduced antibiotic use, highlighting potential applications for hospitals

SourceUniversity of Bonn·JournalApplied and Environmental Microbiology·DateSep 7, 2015
SAMSUNG T9 Portable SSD 2TB

SAMSUNG T9 Portable SSD 2TB transfers large imagery and model outputs quickly between field laptops, lab workstations, and secure archives.

Dually noted: New CRISPR-Cas9 strategy edits genes 2 ways

Researchers at Harvard and MIT have developed a new approach that allows for both genome editing and gene regulation to be achieved using the same Cas9 protein, opening up possibilities for understanding diseases and designing synthetic gene circuits. The method uses engineered guide RNAs to control gene expression.

SourceWyss Institute for Biologically Inspired Engineering at Harvard·JournalNature Methods·DateSep 7, 2015

IASLC issues new statement on tobacco control and smoking cessation

The International Association for the Study of Lung Cancer (IASLC) has issued a new statement on tobacco control and smoking cessation, calling for increased taxes on tobacco products to reduce cigarette smoking. The organization also emphasizes comprehensive advertising and promotion bans and product regulation, including pack warnings.

SourceInternational Association for the Study of Lung Cancer·DateSep 7, 2015

Researchers use laser to levitate, glowing nanodiamonds in vacuum

Researchers have successfully levitated individual nanodiamonds in a vacuum, enabling the creation of extremely sensitive instruments and potentially even larger-scale quantum systems. The system combines optical, spin, and mechanical degrees of freedom, allowing for precise control over the nanodiamond's motion and spin state.

SourceUniversity of Rochester·JournalNature Photonics·DateSep 7, 2015
DJI Air 3 (RC-N2)

DJI Air 3 (RC-N2) captures 4K mapping passes and environmental surveys with dual cameras, long flight time, and omnidirectional obstacle sensing.

Negative symptoms of schizophrenia linked to poor clinical outcomes

Researchers have identified a link between negative symptoms of schizophrenia and adverse clinical outcomes, including increased hospital admission rates and longer hospital stays. Patients with two or more negative symptoms were 24% more likely to be admitted to hospital, with an average extra 21-day stay duration.

SourceKing's College London·JournalBMJ Open·DateSep 7, 2015

MicroRNAs are digested, not absorbed

A recent study has found that microRNAs, previously thought to be digested and absorbed by the body, are actually broken down in the small intestine, rendering them ineffective for modifying physiological functions.

SourceETH Zurich·JournalJournal of Biological Chemistry·DateSep 7, 2015

Improved stability of electron spins in qubits

Physicists at the University of Basel have demonstrated that electron exchange limits the stability of quantum information in qubits. By controlling this exchange process, they can extend coherence times and improve quantum computing performance.

SourceUniversity of Basel·JournalPhysical Review Letters·DateSep 7, 2015