本传感器可用于测量样品的O 2 的浓度及流速，使用时间大于60小时, 每盒1支。 本传感器可用于测量样品的H 2 O 2 的浓度及流速，使用时间大于40小时, 每盒1支。 本传感器可用于测量样品的IAA流速，使用时间不少于8小时, 每盒1支。 流速传感器（O2、H2O2、IAA）货号 ...

Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...

Balancing chemical equations is a fundamental skill in chemistry, essential for understanding stoichiometry and predicting the quantities of reactants and products involved in chemical reactions. When ...

针对病原体感染威胁全球公共卫生的难题，研究人员开发了FeMoS4/MXene生物异质结酶(FM BioHJzyme)。该材料在近红外光(NIR)激发下 ...

本研究揭示了活性氧物种(ROS)在美洲黑杨木质部发育中的关键作用。研究人员通过对比分析速生型(Wimco-109)和慢生型(Wimco-83)克隆株系发现，超氧阴离子(O2•?)促进生长而H2O2导致木质化增强。研究证实NADPH氧化酶(NOX)活性差异调控ROS平衡，为造纸工业选育低木质素 ...

The Nature Index 2025 Research Leaders — previously known as Annual Tables — reveal the leading institutions and countries/territories in the natural and health sciences, according to their output in ...

The Nature Index 2025 Research Leaders — previously known as Annual Tables — reveal the leading institutions and countries/territories in the natural and health sciences, according to their output in ...

The production of hydrogen peroxide (H2O2) via the two-electron oxygen reduction reaction (ORR) has emerged as a promising alternative to the conventional anthraquinone process. However, achieving ...

IT之家 10 月 3 日消息，科技媒体 newatlas 昨日（10 月 2 日）发布博文，科学家首次在分子尺度上实时观察到氢和氧原子结合形成微小的纳米水泡。 氢气（H₂）和氧气（O₂）反应生成水（H₂O）这一化学方程式，帮助我们更好地认识水的形成过程以及化学反应的 ...

Abstract: This paper proposes inductor flux-balance equation based topology derivation of single phase single stage transformer-less boost-buck inverter. To utilise the intermediate capacitor for ...