搜索结果: 1-12 共查到“理学 OC”相关记录12条 . 查询时间(0.05 秒)
【目的】油蚕oc突变体是家蚕Bombyx mori油蚕突变体的一种，经典遗传学连锁图谱已经将oc突变基因定位在5号染色体40.8 cM座位。本研究旨在对oc突变体候选基因进行精细定位并克隆，探究oc性状形成的分子机制。【方法】以油蚕oc突变品系和野生型家蚕品系大造(Dz)为亲本，其杂交产生的F1代雄性个体与oc突变的雌性个体进行回交得到的1 397头BC1代个体为定位材料，以家蚕已经报道的基因组序...
低温(150 oC) 纳米催化水解纤维素
低温(150 oC) 纳米催化 水解纤维素
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2011/10/18
近日，版纳植物园生物能源组在纤维素高选择性水解葡萄糖技术领域上取得新进展，相关研究成果在国际著名生物能源期刊《Bioresource Technology》发表，并申请专利1项。
Size distributions of dicarboxylic acids, ketoacids, α-dicarbonyls, sugars, WSOC, OC, EC and inorganic ions in atmospheric particles over Northern Japan: implication for long-range transport of Siberian biomass burning and East Asian polluted aerosols
atmospheric particles Northern Japan Siberian biomass burning and East Asian polluted aerosols
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2010/8/13
To better understand the size-segregated chemical composition of aged organic aerosols in the western North Pacific rim, day- and night-time aerosol samples were collected in Sapporo, Japan during sum...
Observations of OM/OC and specific attenuation coefficients (SAC) in ambient fine PM at a rural site in central Ontario,Canada
Observations OM/OC and specific attenuation coefficients ambient fine PM rural site
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2010/3/16
Ambient particulate matter (PM) samples were collected on quartz filters at a rural site in central Ontario during an intensive study in 2007. The concentrations of organic carbon (OC), pyrolysis orga...
MIVDO/3方法研究RC(X)OC(O)CH3热分解反应
热分解 酸酐和硫代酸酐 内禀反应坐标 MIVDO/3方法
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2009/12/10
MIVDO/3方法研究RC(X)OC(O)CH3热分解反应。
Positive sampling artifact of carbonaceous aerosols and its influence on the thermal-optical split of OC/EC
carbonaceous aerosols thermal-optical split OC/EC
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2009/10/9
Accurate measurement of carbonaceous aerosols is challenging, due to the sampling artifact and the problems of the split of OC/EC. Two approaches have been used to account for the positive artifact: b...
Fossil and non-fossil sources of organic carbon（OC）and elemental carbon（EC）in Göteborg, Sweden
Fossil and non-fossil sources organic carbon OC elemental carbon EC Gö teborg
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2009/3/13
Particulate matter was collected at an urban site in Göteborg (Sweden) in February/March 2005 and in June/July 2006. Additional samples were collected at a rural site for the winter period. Total...
Size distribution of EC and OC in the aerosol of Alpine valleys during summer and winter
Size distribution EC OC aerosol of Alpine valleys
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2009/1/14
Collections of samples were conducted for the determination of the size distributions of EC and OC during the intensive sampling campaigns of the POVA program, in two Alpine valleys of the French Alps...
A TGA/FT-IR study for measuring OC and EC in aerosol samples
TGA/FT-IR study OC EC aerosol samples
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2008/12/30
Carbon analysis consists in the evaluation of the carbonaceous content of the aerosol (TC) but, more importantly, of its distribution between the two components EC (Elemental Carbon) and OC (Organic C...
Seasonal variation of PM10 main constituents in two valleys of the French Alps. I: EC/OC fractions
Seasonal variation valley French Alps. I: EC/OC fractions
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2008/12/1
Daily PM10 samples were collected at two urban sites within two valleys in the French Alps (Chamonix and St Jean de Maurienne) during a period of two and a half years. The carbonaceous species EC (ele...
白条草晰的染色体组型oC带和Ag-NOR。分析
白条草晰I核型 奥色休带型
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2008/1/15
白条草晰为2n二34T -I- 2m＋7.W，即常染色体中17对为端部着丝点大型染色体，I对为点状．性染色体为zw 型。经BSG显带处理后，全部染色体的著丝点区都有职显的C带，同时还显示了10条端粉C带，表明核型演化过程可能与染色体易位重组有关。银染结果仪显示1对NOR，它位于No. 17染色体的末端。
[Cp2Ln(m-h1:h2-OC(SR)=CPh2 )]2 的合成和表征
稀土金属有机化合物 插入反应 烯酮 结构 环戊二烯基
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2007/12/19
摘要 二茂稀土烃硫基[Cp2Ln(m-SR)]2与二苯基烯酮（Ph2C=C=O）在室温下反应，高选择性生成烯酮单插入稀土-硫键产物[Cp2Ln(m-h1:h2-OC(SR)=CPh2)]2[R = Bn, Ln = Yb (1), Er(2), Y(3)及R = Ph, Ln = Yb (4)]。研究结果显示，改变配体烃硫基性质和增加烯酮的计量对反应没有影响，该反应为含a-烃硫基取代烯醇配体的稀土...