搜索结果: 1-15 共查到“理学 hydrogen”相关记录234条 . 查询时间(0.118 秒)
Touted as clean, ‘blue’ hydrogen may be worse than gas or coal
氢气 气候学 天然气 煤炭
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2023/5/23
“Blue” hydrogen – an energy source that involves a process for making hydrogen by using methane in natural gas – is being lauded by many as a clean, green energy to help reduce global warming. But Cor...
Protection of Bovine Mammary Epithelial Cells from Hydrogen Peroxide-Induced Oxidative Cell Damage by Selenium
selenomethionine selenoprotein synthesis arachidonic acid metabolism mitogen-activated protein kinase
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2018/3/5
The uncontrolled release of arachidonic acid (ARA) and its metabolism by lipoxygenase (LOX) pathway can induce
and aggravate cellular oxidative stress. Selenium (Se) is an integral part of some antio...
Hydrogen diffusion in the apatite-water system: Fluorapatite parallel to the c-axis
apatite hydrogen diffusion H-D exchange H2O SIMS
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2017/4/10
Many studies in the past decade have sought to explore the origin and evolution of water in planetary bodies based on
the hydrogen isotopic compositions of apatite. However, no investigation has stud...
Four-Stroke Engine Cycle Produces Hydrogen from Methane and Captures CO2
Four-Stroke Engine Cycle Produces Hydrogen Methane CO2
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2017/3/14
When is an internal combustion engine not an internal combustion engine? When it’s been transformed into a modular reforming reactor that could make hydrogen available to power fuel cells wherever the...
第二届氢原子转移国际会议（2nd International Conference on Hydrogen Atom Transfer）
第二届 氢原子转移 国际会议
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2017/1/20
The 2nd International Conference on Hydrogen Atom Transfer (iCHAT 2017) will be held from July 2-6 2017 in Monteporzio Catone, a small village in the “Castelli romani” area about 20 km south of Rome. ...
New Findings Boost Promise of Molybdenum Sulfide for Hydrogen Catalysis
Boost Promise Molybdenum Sulfide Hydrogen Catalysis
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2016/12/13
MoS2 presents a promising low-cost catalyst for the hydrogen evolution reaction (HER), but the understanding about its active sites has remained to be limited. Here we present an unambiguous study for...
Galactic Fireworks Illuminate Monster Hydrogen Blob
Galactic Fireworks Monster Hydrogen Blob
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2016/9/29
An international team of researchers using the Atacama Large Millimeter/submillimeter Array (ALMA) and other telescopes has discovered the power source illuminating a so-called Lyman-alpha Blob – a ra...
Dissecting Proton Delocalization in an Enzyme’s Hydrogen Bond Network with Unnatural Amino Acids
Dissecting Proton Delocalization Enzyme’s Hydrogen Bond Network Unnatural Amino Acids
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2016/5/25
Extended hydrogen bond networks are a common structural motif of enzymes. A recent analysis proposed quantum delocalization of protons as a feature present in the hydrogen bond network spanning a tria...
Short Hydrogen Bonds and Proton Delocalization in Green Fluorescent Protein (GFP)
Short Hydrogen Bonds Proton Delocalization Green Fluorescent Protein GFP
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2016/5/25
Short hydrogen bonds and specifically low-barrier hydrogen bonds (LBHBs) have been the focus of much attention and controversy for their possible role in enzymatic catalysis. The green fluorescent pro...
Quantum delocalization of protons in the hydrogen-bond network of an enzyme active site
ab initio path integral molecular dynamics enzyme hydrogen bonding nuclear quantum effects proton delocalization
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2016/5/25
Enzymes use protein architectures to create highly specialized structural motifs that can greatly enhance the rates of complex chemical transformations. Here, we use experiments, combined with ab init...
Putative Hydrogen Bond to Tyrosine M208 in Photosynthetic Reaction Centers from Rhodobacter capsulatus Significantly Slows Primary Charge Separation
Coagulation Nano TiO2 Nano Al2O3 Breakage Fractal dimension
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2016/5/25
Slow, ～50 ps, P* → P(+)HA(-) electron transfer is observed in Rhodobacter capsulatus reaction centers (RCs) bearing the native Tyr residue at M208 and the single amino acid change of isoleucine at M20...
A conserved water-mediated hydrogen bond network defines bosutinib’s kinase selectivity
Humans Water Quinolines Nitriles Aniline Compounds src-Family Kinases Amino Acid Substitution Conserved Sequence Substrate Specificity Hydrogen Bonding
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2016/5/25
Kinase inhibitors are important cancer drugs, but they tend to display limited target specificity, and their target profiles are often challenging to rationalize in terms of molecular mechanism. Here ...
Measuring Electrostatic Fields in Both Hydrogen Bonding and non-Hydrogen Bonding Environments using Carbonyl Vibrational Probes
Ribonucleases Molecular Probes Protein Conformation Vibration Acetophenones Molecular Dynamics Simulation Static Electricity Hydrogen Bonding Solvents
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2016/5/25
Vibrational probes can provide a direct readout of the local electrostatic field in complex molecular environments, such as protein binding sites and enzyme active sites. This information provides an ...
Quantitative Dissection of Hydrogen Bond-Mediated Proton Transfer in the Ketosteroid Isomerase Active Site
active site environment computational modeling enzyme catalysis protein electrostatics protein semisynthesis
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2016/5/25
Hydrogen bond networks are key elements of protein structure and function but have been challenging to study within the complex protein environment. We have carried out in-depth interrogations of the ...
Experimental quantification of electrostatics in X-H⋅⋅⋅π hydrogen bonds
Experimental quantification electrostatics X-H⋅ ⋅ ⋅ π hydrogen bonds
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2016/5/25
Hydrogen bonds are ubiquitous in chemistry and biology. The physical forces that govern hydrogen-bonding interactions have been heavily debated, with much of the discussion focused on the relative con...