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Study on Screening and Cultivation Conditions of Xylanase-Producing Alkalophilic Bacterial

Wuhan University Journal of Natural Sciences 2004年第1期9卷 125-128页

作者： HanXiao-fang zhenglian-shuang XieYi-min DepartmentofChemicalEngineering WuhanUniversityofTechnologyWuhan430070HubeiChina TheStateKeyLaboratoryofPulpandPaperEngineering SouthChinaUniversityofTechnologyGuangzhou510640GuangdongChina

An xylanase producting alkalophilic Bacillus NT-9 was obtaind by the screening method of transparent zone on the selective medium, and the effects of carbon source and nitrogen source on xylanase production were studied. The medium composed of xylose 1.5%, (NH 4) 2SO 4 0.25%, K 2HPO 4 0.1%, MgSO 457H 2O 0.02%, with the initial pH of 10, was suggested to be optimal for the enzyme production in this study. When cultivatied at 37 ℃ for 72 h, the enzyme activity elaborated by the strain may reach as high as 10.5 U/mL. The xylanase produced by Bacillus NT-9 was a constituent enzyme.

关键词： alkalophilic Bacillus xylanase xylose constituent enzyme

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An ultralight,flexible,and biocompatible all-fiber motion sensor for artificial intelligence wearable electronics

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npj Flexible Electronics 2022年第1期6卷 235-242页

作者： Sen Lin shuang Hu Wei Song Miaoqing Gu Junchen Liu Jianan Song zhenglian Liu Ziwei Li Kun Huang Yufeng Wu Ming Lei Hui Wu School of Physical Science and Technology Guangxi UniversityNanning 530004China Advanced Institute for Brain and Intelligence Guangxi UniversityNanning 530004China State Key Laboratory of Information Photonics and Optical Communications and School of Science Beijing University of Posts and TelecommunicationsBeijing 100876China State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China

New-generation human body motion sensors for wearable electronics and intelligent medicine are required to comply with stringent requirements in terms of ultralight weight,flexibility,stability,biocompatibility,and extreme ***,conventional sensors are hard to fulfill all these criteria due to their rigid structure,high-density sensing materials used as the constituents,as well as hermetical and compact assembly ***,we report an ultralight sensing material based on radial anisotropic porous silver fiber(RAPSF),which has been manufactured by phase separation and temperature-controlled grain growth strategy on a modified blow-spinning *** resistance of RAPSF could be dynamically adjusted depending on the deflected ***,an all-fiber motion sensor(AFMS)with an ultra-low density of 68.70 mg cm^(−3) and an overall weigh of 7.95 mg was fabricated via layer-by-layer *** sensor exhibited outstanding flexibility,breathability,biocompatibility,and remarkable body motion recognition ***,the AFMS was shown to have great potential as an artificial intelligence throat sensor for throat state identification at the accuracy above 85%,allowing one to spot the early onset of the viral throat illness.

关键词： fiber artificial motion

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