d) The indirect spin-spin coupling is a magnetic interaction between at least two NMR nuclei which is transmitted by bonding electrons. This interaction (sometimes also called J coupling) is only ...

引言棕色脂肪组织（BAT）在哺乳动物能量代谢中扮演着重要角色，尤其在寒冷环境下，它通过非颤栗性产热帮助维持体温。BAT的产热过程由去甲肾上腺素激活，依赖线粒体内膜上的解偶联蛋白1（UCP1），通过消耗线粒体内的电化学质子梯度，将能量转化为热量，从而实 ...

References: Dydak U, Jiang YM, Long LL, Zhu H, Chen J, Li WM, et al. In Vivo Measurement of Brain GABA Concentrations by Magnetic Resonance Spectroscopy in Smelters Occupationally Exposed to Manganese ...

Can kinesin keep efficiency high by altering the coupling between its biochemical and mechanical cycles (the number of ATP molecules consumed per step)? Or must it always break down one ATP for ...

海归发起人的公益学术平台分享信息，整合资源交流学术，偶遇风月科技兴则民族兴，科技强则国家强。在过去的一年里，我国科技事业取得的历史性成就、所发生的历史性变革在不断显现。在量子科技、生命科学、物质科学、空间科学等领域取得一批重大原创成果，微分几何学两大 ...

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Magnetic couplings are non-contact couplings that use a magnetic field to transfer torque, force or movement from one rotating member to another. The transfer takes place through a non-magnetic ...

Fluid couplings are torque-transmitting couplings that use hydraulic oil or water to transmit power. They differ from torque converters in that the input torque is equal to the output torque (no ...

When CCAR was founded by Dr. George Born in 1985, its focus was in the traditional astrodynamics fields of navigation and orbit determination. Over the years, the center’s research focus has evolved ...

Black hole formation could be a little Big Bang in reverse, coupling the matter of a dying star with dark energy, the ...

This study provides convincing evidence for functional subpopulations of β-cells responsible for Ca2+ signal initiation and maintenance using novel three-dimensional light sheet microscopy imaging and ...