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water rotation;ion specificity;ionic solution;molecular dynamics;femtosecond infrared;structure dynamics

Researchers Find Molecular Mechanism of Water Reorientational Slowing Down in Concentrated Ionic Solutions[Sep 07, 2017]

Recently, Prof. ZHUANG Wei and his colleagues at Fujian Institute of Research on the Structure of Matters of Chinese Academy of Sciences investigated water reorientational motion in different ionic solutions theoretically, and carried out massive amount of molecular dynamics simulations to generate the statistically comprehensive ensemble of water hydrogen bond switching events.

ice crystal;ice growth;surface wettability;antiicing;ice

【Nature】 Water-repellent Coatings Could Make De-icing a Breeze[Oct 12, 2017]

When water droplets suspended in the air freeze, they generate snowflakes. But when ice grows along a solid surface, it can take on an almost infinite range of different shapes. These crystalline patterns are affected by whether a surface repels or absorbs water, says the researchers. They showed that when a surface tends to repel water, ice crystals can be cultivated to grow away from the surface at an angle, resembling a clover with six leaves.

glycolaldehyde;ethylene glycol;Galactic center;Sgr B2;Shanghai Tian Ma Radio Telescope;Shanghai Astronomical Observatory;complex organic moecule

Shanghai TMRT Discovers Abundant Complex Organic Molecules in the Galactic Center[Oct 11, 2017]

Using Shanghai Tian Ma Radio Telescope (TMRT), a 65 meter diameter fully-steerable radio telescope located in the western suburbs of Shanghai, China, a research team led by Prof. SHEN Zhiqiang from Shanghai Astronomical Observatory (SHAO) of Chinese Academy of Sciences carried out mapping observation of glycolaldehyde and ethylene glycol in Sgr B2 with 200 hrs observing time.

photosynthesis parameters;chlorophyll fluorescence;water ecological environment

AIOFM Develops New Methods for Plant Photosynthesis Parameters Measurement[Oct 11, 2017]

Scientists at Anhui Institute of Optics and Fine Mechanics (AIOFM), Hefei Institutes of Physical Science of the Chinese Academy of Sciences manages to develop new methods for measuring plant photosynthesis parameters.

whole brain neural activity;larval zebrafish;whole brain imaging;fast 3D tracking;whole brain

Advanced Imaging and Tracking Techniques Help to Monitor Whole Brain Neural Activity in Freely Swimming Larval Zebrafish[Oct 12, 2017]

A new research carried out by the Optical Neuroimaging Group led by Dr. WANG Kai at the Institute of Neuroscience of Chinese Academy of Sciences collaborating with the Biophysical and Computational Neuroscience group led by Dr. WEN Quan at University of Science and Technology of China reported a novel volume imaging and 3D tracking technique that monitors whole brain neural activity in freely swimming larval zebrafish.

ice;methane hydrate;nucleation;molecular dynamics

Researchers Reveal the Effects of Ice on Methane Hydrate Nucleation[Oct 12, 2017]

The effect of ice on the nucleation of methane hydrate was investigated using microsecond constant energy molecular dynamics simulation by Prof. GUO Guangjun‘s lab at IGGCAS. They found that methane hydrate can nucleate either on the ice surface heterogeneously or in the bulk solution phase homogeneously. However, the efficiency of ice as a promoter and as an inhibitor for heterogeneous nucleation is different. It is estimated that the former is larger than the latter under the working conditions. Utilizing the benefit of ice to absorb heat, the microcanonical molecular dynamics simulation of hydrate formation with ice can mimic the phenomenon of ice shrinking during the heterogeneous nucleation of hydrates and lower the overly large temperature increase during homogeneous nucleation.

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