Abstract: This paper describes a theory to synthesize nonisolated dc-dc converters. It uses the fundamental flux balance equation across the inductors of a converter as a starting point in this ...

Hydrothermal experiments were conducted to evaluate the kinetics of H-2(aq) oxidation in the homogeneous H-2-O-2-H2O system at conditions reflecting subsurface/near-seafloor hydrothermal environments ...

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材料 ...

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 ...

Developing a quantitative understanding of wave plasma processes in the lower ionosphere requires a reasonably accurate theoretical description of the underlying physical processes. For such a highly ...

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 ...

H+O2 = O+OH 2.644E+16 -0.6707 17041.00 !GRI3.0 * 1.00 O+H2 = H+OH 4.589E+04 2.700 6260.00 !GRI3.0 * 1.19 OH+H2 = H+H2O 1.734E+08 1.510 3430.00 !GRI3.0 * 0.80 OH+OH = O+H2O 3.973E+04 2.400 -2110.00 ...

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 ...

光合成过氧化氢（H2O2）是太阳能的收集和转化的一种有效策略，但光合成H2O2的高效过程是由光生成的电子-空穴对重组导致的H2O2产率降低所驱动的，特别是在没有牺牲剂的情况下。基于此，厦门大学黄小青教授和韩佳甲助理教授、广东工业大学徐勇教授等人报道 ...