搜索结果: 1-15 共查到“理学 Photolysis”相关记录28条 . 查询时间(0.046 秒)
A Photolysis-Triggered Heme Ligand Switch in H93G Myoglobin
Animals Carbon Monoxide Iron Ferrous Compounds Heme Glycine Myoglobin Ligands Mutagenesis, Insertional Lasers
2016/5/23
Resonance Raman spectroscopy and step-scan Fourier transform infrared (FTIR) spectroscopy have been used to identify the ligation state of ferrous heme iron for the H93G proximal cavity mutant of myog...
On the Origin of Heme Absorption Band Shifts and Associated Protein Structural Relaxation in Myoglobin Following Flash Photolysis
transhydrogenase NAD NADP Escherichia coli proton pump metal ion
2016/5/23
The role of the protein structural change monitored by absorption band shifts following flash photolysis of CO from myoglobin is discussed in terms of structure-function relationships. Evidence is pre...
The photolysis module JVAL-14, compatible with the MESSy standard, and the JVal PreProcessor (JVPP)
photolysis module JVAL-14 JVal PreProcessor
2014/12/19
We present version 14 of the photolysis module JVAL. Taking atmospheric conditions as input, JVAL calculates photolysis rate coefficients, i.e. the speed of dissociation of atmospheric molecules in th...
Implementation of the Fast-JX Photolysis scheme (v6.4) into the UKCA component of the MetUM chemistry-climate model (v7.3)
the Fast-JX Photolysis scheme UKCA component MetUM chemistry-climate model
2014/12/17
Atmospheric chemistry is driven by photolytic reactions, making their modelling a crucial component of atmospheric models. We describe the implementation and validation of Fast-JX, a state of the art ...
UV Photolysis of N2O Isotopomers: Isotopic Fractionations and Product Rotational Quantum State Distributions
Time-dependent wavepacket Isotopic fractionation Product rotational distri-bution
2012/4/5
The time-dependent quantum wave packet method is used to study the dynamics of the pho-todissociation processes for the isotopomers 14N14N16O, 14N15N16O, 15N15N16O, 15N15N16O, 14N14N17O, and 14N14N18O...
Modeling of photolysis rates over Europe: impact on chemical gaseous species and aerosols
photolysis rates Europe chemical gaseous species and aerosols
2011/2/25
This paper evaluates the impact of photolysis rate calculation on simulated European air composition and air quality. In particular, the impact of the cloud parametrisation and the impact of aerosols ...
Different photolysis kinetics at the surface of frozen freshwater vs. frozen salt solutions
Different photolysis kinetics frozen freshwater frozen salt solutions
2010/11/30
Reactions at air-ice interfaces can proceed at very different rates than those in aqueous solution, due to the unique disordered region at the ice surface known as the quasi-liquid layer (QLL) . The p...
Photolysis frequencies for NO2 are modeled for the conditions in urban streets, which are taken into account as canyons with variable height and width. The effect of a street canyon is presented with ...
Pressure dependence of the deuterium isotope effect in the photolysis of formaldehyde by ultraviolet light
the deuterium isotope effect the photolysis of formaldehyde ultraviolet light
2010/8/12
The pressure dependence of the relative photolysis rate of HCHO vs. HCDO has been investigated for the first time, using a photochemical reactor at the University of Copenhagen. The dissociation of HC...
Photolysis imprint in the nitrate stable isotope signal in snow and atmosphere of East Antarctica and implications for reactive nitrogen cycling
nitrate stable isotope signal snow atmosphere East Antarctica reactive nitrogen cycling
2009/11/19
The nitrogen (δ15N) and triple oxygen (δ17O and δ18O) isotopic composition of nitrate (NO3−) was measured year-round in the atmosphere and snow pits at Dome C, Antarctica (DC, 75.1° S, 123.3° E)...
Clouds, photolysis and regional tropospheric ozone budgets
Clouds photolysis regional tropospheric ozone budgets
2009/11/19
We use a three-dimensional chemical transport model to examine the shortwave radiative effects of clouds on the tropospheric ozone budget. In addition to looking at changes in global concentrations as...
Relationship between the NO2 photolysis frequency and the solar global irradiance
Relationship NO2 photolysis frequency solar global irradiance
2010/2/8
Representative values of the atmospheric NO2 photolysis frequency j(NO2) are required for the adequate calculation and interpretation of NO and NO2 concentrations and exchange fluxes near the surface....
Upgrading photolysis in the p-TOMCAT CTM:model evaluation and assessment of the role of clouds
Upgrading photolysis p-TOMCAT CTM model evaluation assessment role of clouds
2010/2/5
A new version of the p-TOMCAT Chemical Transport Model (CTM) which includes an improved photolysis code, Fast-JX, is validated. Through offline testing we show that Fast-JX captures well the observed ...
Sensitivity studies of the recent new data on O（1D）quantum yields in O3 Hartley band photolysis in the stratosphere
O（1D）quantum yields O3 Hartley band photolysis stratosphere
2009/3/11
The production yields of excited oxygen O(1D) atoms from the near ultraviolet O3 photolysis are essential quantities for atmospheric chemistry calculations because of its importance as major sources o...
OH in the coastal boundary layer of Crete during MINOS: Measurements and relationship with ozone photolysis
OH coastal boundary layer MINOS ozone photolysis
2009/3/10
Hydroxyl radical (OH) concentrations were measured in August 2001 at Finokalia Station on the northeastern coast of Crete during the Mediterranean Intensive Oxidant Study (MINOS). OH was measured base...