搜索结果: 1-15 共查到“理学 VOC”相关记录16条 . 查询时间(0.12 秒)
庚糖是细菌多糖、糖蛋白和许多天然产物的重要组成部分，它在细菌的免疫识别和毒力以及天然产物的生物活性中发挥着重要作用。目前已知含庚糖的细菌天然产物，根据庚糖的结构分为含呋喃庚糖、高度还原呋喃庚糖、D-吡喃庚糖和L-吡喃庚糖的四大类。Septacidins（SEPs）、anicemycin和spicamycins是一类结构中包含L-吡喃庚糖的核苷类抗生素，它们均由独特的N6位L-氨基庚糖-腺嘌呤核心和...
中国科学院微生物所研究人员发现VOC家族糖异构酶参与庚糖的生物合成（图）
糖异构酶 生物合成 真菌
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2023/7/4
庚糖是细菌多糖、糖蛋白和许多天然产物的重要组成部分，它在细菌的免疫识别和毒力以及天然产物的生物活性中发挥着重要作用。目前已知含庚糖的细菌天然产物，根据庚糖的结构分为含呋喃庚糖、高度还原呋喃庚糖、D-吡喃庚糖和L-吡喃庚糖的四大类。Septacidins（SEPs）、anicemycin和spicamycins是一类结构中包含L-吡喃庚糖的核苷类抗生素，它们均由独特的N6位L-氨基庚糖-腺嘌呤核心和...
由SARS-CoV-2病毒引发的新冠肺炎(COVID-19)仍在全球范围大流行。虽然已经有不同类型的疫苗及单克隆抗体(简称“单抗”)上市，但是新冠受关注突变体(Variants of Concern, VOCs)可通过疫苗突破(Vaccine breakthrough)及抗体逃逸等方式感染个体[1]。因此，筛选针对新冠VOCs的广谱（Broadly neutralizing）或全谱(Pan-neu...
中国科学院上海有机化学研究所和天华化工机械及自动化研究设计院有限公司合作在口罩熔喷聚丙烯树脂深度脱除挥发性有机化合物（VOC）方面取得重要进展。2020年初国内疫情爆发，中国石化集团接受国家紧急任务，加紧生产防护口罩的上游原料熔喷聚丙烯（PP）树脂。为此，中国石化燕山石化公司紧急联合中国化工集团天华化工机械及自动化研究设计院有限公司和中国科学院上海有机化学研究所成立工作团队，三方联动边开发熔喷聚丙...
Photochemical grid model implementation and application of VOC, NOx, and O3 source apportionment
model implementation application
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2015/3/5
. For the purposes of developing optimal emissions
control strategies, efficient approaches are needed to identify the major sources or groups of sources that contribute to
elevated ozone (O3/...
Eddy covariance VOC emission and deposition fluxes above grassland using PTR-TOF
VOC grassland PTR-TOF
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2011/2/24
Eddy covariance (EC) is the preferable technique for flux measurements since it is the only direct flux determination method. It requires a continuum of high time resolution measurements (e.g. 5–20 Hz...
VOC measurements within a boreal forest during spring 2005: on the occurrence of elevated monoterpene concentrations during night time intense particle concentration events
VOC measurements boreal forest monoterpene concentrations
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2009/11/19
In this study we present measurements of selected trace gases and aerosols made in a boreal forest during the BACCI-QUEST IV intensive field campaign in Hyytiälä, Finland in April 2005. Spri...
Statistical analysis of anthropogenic non-methane VOC variability at a European background location（Jungfraujoch, Switzerland）
anthropogenic non-methane VOC European background location Jungfraujoch Switzerland
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2009/6/2
In-situ measurements of 7 volatile hydrocarbons, CxHy, and 3 chlorinated organic compounds, CxHyClz, were performed at Jungfraujoch (Switzerland) during eight years (2000–2007). The analysis of 4-h re...
Assessment of the reduction methods used to develop chemical schemes: building of a new chemical scheme for VOC oxidation suited to three-dimensional multiscale HOx-NOx-VOC chemistry simulations
chemical schemes VOC oxidation three-dimensional multiscale HOx-NOx-VOC chemistry simulations
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2009/2/17
The objective of this work was to develop and assess an automatic procedure to generate reduced chemical schemes for the atmospheric photooxidation of volatile organic carbon (VOC) compounds. The proc...
Temperature and light dependence of the VOC emissions of Scots pine
Temperature light VOC emissions Scots pine
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2009/2/8
The volatile organic compound (VOC) emission rates of Scots pine (Pinus sylvestris L.) were measured from trees growing in a natural forest environment at two locations in Finland. The observed total ...
The SOA/VOC/NOx system: an explicit model of secondary organic aerosol formation
SOA/VOC/NOx system explicit model secondary organic aerosol formation
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2008/12/24
Our current understanding of secondary organic aerosol (SOA) formation is limited by our knowledge of gaseous secondary organics involved in gas/particle partitioning. The objective of this study is t...
The weekend effect within and downwind of Sacramento – Part 1: Observations of ozone, nitrogen oxides, and VOC reactivity
Sacramento ozone nitrogen oxides VOC reactivity
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2008/12/23
Day-of-week patterns in human activities can be used to examine the ways in which differences in primary emissions result in changes in the rates of photochemical reactions, and the production of seco...
Technical Note: Quantitative long-term measurements of VOC concentrations by PTR-MS – measurement, calibration, and volume mixing ratio calculation methods
VOC PTR-MS volume mixing ratio
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2008/11/26
Proton transfer reaction mass spectrometry (PTR-MS) is a technique for online measurements of atmospheric concentrations, or volume mixing ratios, of volatile organic compounds (VOCs). This paper giv...
Volatile Organic Compound (VOC) measurements in the Pearl River Delta (PRD) region, China
volatile organic compound pearl piver delta China
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2008/11/3
We measured levels of ambient volatile organic compounds (VOCs) at seven sites in the Pearl River Delta (PRD) region of China during the Air Quality Monitoring Campaign spanning 4 October to 3 Novembe...
VOC reactivity in central California: comparing an air quality model to ground-based measurements
VOC reactivity central California air quality model ground-based measurements
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2008/10/27
Volatile organic compound (VOC) reactivity in central California is examined using a photochemical air quality model (the Community Multiscale Air Quality model; CMAQ) and ground-based measurements to...