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1,541 articles from PhysOrg

Surprising mammal diversity discovered in Bidoup Nui Ba National Park

New surveys have revealed surprising mammal biodiversity in Bidoup Nui Ba National Park (Bidoup Nui Ba NP), a large protected area located in the southern part of the Annamites range. The presence of numerous rare and endangered mammals in Bidoup Nui Ba NP provides a ray of hope for the long-term conservation of Vietnam's unique biodiversity.

Whale sharks found to have tiny teeth around their eyes

A team of researchers working at Japan's Okinawa Churashima Research Center has found that whale sharks have thousands of dermal denticles (tiny teeth) in the skin surrounding their eyeballs. In their paper posted on the open access site PLOS ONE, the group describes their study of the teeth and suggest possible functions.

Astronomers see unexpected molecule in exoplanet atmosphere

SRON-astronomers have found the signature for aluminum oxide (AlO) in the spectrum of exoplanet WASP-43b. This came as a surprise because AlO is expected to stay hidden in the lower atmospheric layers. It is only the second time that astronomers have observed the molecule in an exoplanet's atmosphere. The results are published in Astronomy & Astrophysics on July 1.

Building better electron sources with graphene

Photocathodes that produce electron beams for electron microscopes and advanced accelerators can be refreshed and rebuilt repeatedly without opening the devices that rely on them, provided the electron emitting materials are deposited on single-atom-thick layers of carbon known as graphene, according to a new study published in the journal Applied Physics Letters.

Q&A: Researchers investigate a plague of locusts in East Africa

A plague of locusts has descended on East Africa, devouring crops, trees, and pasture as they move. The first generation, which emerged at the end of last year, numbered in the hundreds of billions. Left unchecked, locusts multiply by a factor of 20 per generation, according to the UN Food and Agriculture Organization (FAO), meaning that the second generation that took flight in March and April...

How to build a better Canada after COVID-19: Launch a fossil-free future

Demand for fossil fuels collapsed during the COVID-19 pandemic as lockdown measures were introduced. In the second quarter of 2020, experts predict that global oil demand will be down 20 percent from this time last year. Although demand is likely to recover somewhat in the next two years, some major oil company executives believe that it may never return to pre-2020 levels.

Strategies found for protecting island scrub jays from West Nile virus

In Channel Islands National Park off the coast of California lives the island scrub jay, a vivid blue and gray songbird with a species population of around 1,700. The rare species makes its home exclusively on Santa Cruz Island, about 18 miles off the coast of Santa Barbara in a lush nature preserve of oak woodland and chaparral vegetation.

N-carbamylglycinate in late gestation improves reproductive performance in sows

Recently, a research team led by Dr. Wan Dan from the Institute of Subtropical Agriculture (ISA) of the Chinese Academy of Sciences investigated effects of N-carbamylglycinate (CGly) on reproductive performance of sows in the late gestation. CGly is a derivative of glycine and an analog of N-carbamylglutamate. The study was published in Food & Function.

Multi-focal Fibonacci sieve advances single-shot multi-planar wavefront measurement

Wavefront measurement has various applications in high power amplifiers, adaptive optical system, and phase microscopy. Among methods for high-precision wavefront measurement, the coherent diffraction imaging (CDI) is a technique that employs iterative algorithms to reconstruct the phase and amplitude information of the test object from its diffraction intensities. However, it requires multiple...

Scientists reveal void-confinement effects of hollow nanoreactors

Hollow nanoreactors have attracted attention in catalysis research due to their unique catalytic properties, especially their void-confinement effects. Many factors affect catalytic performance, especially in the liquid phase hydrogenation reaction, such as the catalyst structure and reaction conditions.

Gene fate after single whole-genome duplication in angiosperm

Multiple whole-genome duplications (WGDs) are found in most sequenced angiosperms. WGDs help plants to survive in extreme environments and contribute to phenotypic innovations. Duplicated genes following WGD often have different fates: They can quickly disappear again, be retained for long(er) periods, or subsequently undergo small-scale duplications. But why do different genes have different...

Shrimp shells to produce electrodes for large storage batteries

A project by Spanish researchers and other collaborators at the Massachusetts Institute of Technology (MIT) suggests the use of chitin from shrimp shells to produce electrodes for vanadium flow batteries. The results of the work have recently been published in ACS Sustainable Chemistry & Engineering.

Researchers building a harder diamond, called pentadiamonds

Researchers at the University of Tsukuba used computer calculations to design a new carbon-based material even harder than diamond. This structure, dubbed "pentadiamond" by its creators, may be useful for replacing current synthetic diamonds in difficult cutting manufacturing tasks.