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metamaterial;acoustic bend;impedance match

Impedance-Matching Acoustic Bend Improves Impedance Ratio and Increases Transmission[Sep 18, 2017]

A research team from the Institute of Acoustics (IOA) of the Chinese Academy of Sciences designs an impedance-matching acoustic bend with perforated plates and side pipes, which can improve impedance ratio and increases energy transmission.

micro-perforated plate;perforated plate;porous sound absorptive material;sound absorption

New Compound Sound Absorber Improves Sound Absorptive Performance in Low- to Mid-Frequency Range[Sep 18, 2017]

Researchers LI Dengke and CHANG Daoqing from the Institute of Acoustics, Chinese Academy of Sciences investigate and propose a compound sound absorber, which comprised of perforated plates with extended tubes (PPET) and porous sound absorptive material (PSAM), to improve the sound absorption in the low- to mid- frequency range (100-1600 Hz) under the space constraint of about 100 mm depth.

facilitation;leguminous shrub;precipitation

The Facilitation of Leguminous Shrub to Its Neighbors Increase with Precipitation[Sep 18, 2017]

Scientists from Ecological Stoichiometry Research Group of Institute of Applied ecology (IAE) of the Chinese Academy of Sciences synthesized a global dataset from 66 studies and evaluated how shrubs affected soil organic carbon and nitrogen in grasslands along a precipitation gradient.


Uncommon P450 Reactions Expand Natural Products Chemical Space[Sep 15, 2017]

Recently, Professor LI's group was invited to write a review to summarize the uncommon P450 reactions. The review was published in issue 9 (2017) of Natural Product Reports as a cover article.


Nanocomposite to Immobilize Arsenic and Copper Ions in Manure[Sep 15, 2017]

Prof. WU Zhengyan and the his research team at theInstitute of Technical Biology and Agriculture Engineering, Hefei institutes of physical science, Chinese Academy of Sciences reported their success of developing a nanocomposite to immobilize As and Cu ions in organic fertilizer.

algae monitoring;monitoring;Fluorescence Spectrum On-line Analyzer;water ecological environment

AIOFM Scientists Develop Algae Monitoring System[Sep 14, 2017]

Scientists at Anhui Institute of Optics and Fine Mechanics (AIOFM), Hefei Institutes of Physical Science of the Chinese Academy of Sciences have completed an effective Algae Fluorescence Spectrum On-line Analyzer.


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