A micromachined test structure was used to measure the etch rate of silicon in potassium hydroxide (KOH) as a function of surface orientation, which quantifies etchant anisotropy. By adding multidentate ligands, containing hydroxyl groups, to etchant solutions, the effects of these ligands on etch rate were determined. Bidentate ligands 1,2-ethanediol, 1,3-propanediol, and 1,4-butanediol each s...

The properties ofpyruvate kinase from soybean ( Glycinemax L.) nodule cytosol were examind to determine what influence the N2 fixation process might have on this supposed key control enzyme. A crude enzyme preparation was prepared by chromatography of cytosol extract on a diethylaminoethyl-cellulose column. ATP and citrate at 5 mm concentrations inhibited pyruvate kinase 27 and 34%, respectivel...

Reactive ion etching lag is used to fabricate capacitance sensor to detect vertical movement in a gyroscope. Aspect ratio of each trenches are controlled by inlet opening width. In comparison to present gap closing-type sensors, the sensor structure fabricated with RIE lag on silicon on insulator wafer shows bigger sensitivity. INTRODUCTION Micromachined gyroscopes for measuring the rate and/or...

Open AccessCCS ChemistryRESEARCH ARTICLE1 May 2021An Activatable Nanoenzyme Reactor for Coenhanced Chemodynamic and Starving Therapy Against Tumor Hypoxia Antioxidant Defense System Zhihe Qing, Ailing Bai, Lifang Chen, Shuohui Xing, Zhen Zou, Yanli Lei, Junbin Li, Juewen Liu Ronghua Yang Qing *Corresponding authors: E-mail Address: [email protected] Hunan Provincial Key Laboratory of Cytochemis...

Structural interventions are key components of a combination approach to HIV prevention. While global guidance for HIV prevention recognises this key role, evidence for the effectiveness of structural interventions, and their implementation, are lagging behind other areas of prevention. Over the past several years, ‘structural prevention’ has received significant academic and intellectual atten...