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- Novel methods for the carbonylation are introduced of olefins,halides,paraffins,and arenes under ambient conditions and UV irradiation catalyzed by transition metal complexes. 介绍了以烯烃、卤代烃、烷烃及芳烃为底物,在光促进和温和条件下,用过渡金属催化进行羰基合成的新方法。
- Effects of plasma composite parameter (W/FM), plasma pretreatment time, AAm monomer concentration and UV irradiation time on grafting yields were investigated systematically. 探讨了等离子体复合参数(W/FM)、等离子体预处理时间、AAm单体浓度以及紫外照射时间对AAm接枝反应的影响。
- Influences of immersion time of film in the solution of initiator, monomer concentration,reaction temperature and UV irradiation time on grafting effect are studied. 研究了膜在光引发剂溶液中的浸泡时间、单体溶液的浓度、反应温度和紫外光照射时间等对接枝效果的影响。
- In the system the effects of photoinitiator and monomer concentration on grafting are not distinct,while photo-reduction time, UV irradiated polymerization time and UV light intensity have more effects on grafting yield. 实验发现,光敏剂浓度对接枝率有一定影响;光还原时间增加,接枝率明显增加;聚合前期接枝率提高较快,反应后期增加缓慢;紫外光照射强度的改变会影响接枝率。
- Methods:Morphological, microscopical and UV spectral methods. 方法:形态学、组织学和紫外光谱方法。
- Human skin receptive solar UV irradiation comprises mainly UVB and UVA. 人体皮肤接受的日光紫外线辐射主要为UVA和UVB。
- The effective prevention of UV irradiation, skin moisture content increase. 有效防止紫外线的照射,提升肌肤含水量。
- Extensible features: computer piercing and UV, ticheting die-cutting, etc. 可扩充功能:电脑冲孔、UV干燥、吊牌模切等。
- Some companies sell UV test strips and UV dosimeters, which you attach to your skin. 一些公司出售可以贴在皮肤上的紫外线测试带和紫外线测试仪。
- A small dish used for baking and serving. 小模子一种用于烤食物和盛食物的小盘子
- Under UV irradiation, bidentate nitrites were oxidized to monodentate or bidentate nitrates. 此超氧化物会将双齿亚硝酸基氧化成硝酸基。
- Come with metal rack for baking and steaming. 内附金属架,可烘烤或清蒸食物。
- The photodegradation behavior of STCO, PS and PS/STCO blends under the UV irradiation was investigated respectively. 结果表明,由于STCO的加入,可以明显加快PS的光降解速度。
- It becomes a potential problem for the photostability of amino acids upon UV irradiation. 因此,胺基酸分子被紫外光照射后,所走的光稳定路径很值得探讨。
- Treatment of H_2O_2 or UV irradiation significantly decreased cell viability,GSH and SOD activity in cytoplasm,while increased MDA in cytoplasm. H2O2或紫外线照射损伤的Hela细胞活性明显下降;胞浆中的GSH、SOD活性显著降低;MDA含量升高;与对照组比有显著性差异(P<0.;05或P<0
- The photopolymerization of propargyl alcohol by UV irradiation in the presence of triphenylphosphine was carried out for the first time. 本文首次应用三苯膦引发丙炔醇光聚合,制得黄色粉末状、具有共轭双键结构的聚丙炔醇。
- Some dirt and ice samples will be baked and their vapors analyzed. 一些泥土和冰层样品将被烤及其蒸汽分析。
- Variables parameters the degree of grafting(DG),such as UV irradiation time and the(concen)-(trations) of the acrylic acid monomer and p. 在均相溶液体系下,运用紫外光辐射引发合成了聚砜与丙烯酸的接枝共聚物。
- NEWLAND EnTech possesses the only million-tons UVC water disinfection test channel in Asia, as well as the advanced bio-chemical laboratory center and UV lamp test center. 新大陆环保拥有亚洲惟一可进行数百万吨水量紫外C消毒系统实验验证渠及设备性能测试渠、先进的生化实验中心和紫外灯管性能测试中心。
- The photo-polymerization(PPM)of triclosan under UV irradiation and effects of light sources were investigated by using LC-ESI-MS and HPLC. 本文采用高效液相色谱-电喷雾质谱研究了三氯生在紫外光照射下的光聚合反应,通过对产物的准分子离子分析,初步确定了7种光聚合产物。