芳香
- 与 芳香 相关的网络例句 [注:此内容来源于网络,仅供参考]
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The gasification efficiency increased and the molar fraction of H2 decreased with an increase in the reaction temperature. The decomposition of PVA was more complete at higher temperatures. At 24 MPa, 500℃ and 120 s, the TOC remove rate, the carbon gasification rate and the hydrogen gasification rate were up to 71.46%, 67.97% and 157.24% respectively. A change in the residence time had no significant effect on the molar fraction of gas production but an increase in the residence time could enhance the gasification efficiency of PVA. It was found that the intermediates were mainly alkane, cycloparaffin, aromatic hydrocarbons, and low-molecular weight acids. It was supposed that PVA was degraded into small molecules through breaking of C-C bonds. Parts of the molecules were converted into H2, CO, CH4 and CO2 while some was converted into aromatic hydrocarbons.
过程探索发现:反应温度的升高能提高PVA气化效率,但气体产物中H2的含量随反应温度的升高有所下降;随着反应温度的升高,PVA分解趋于彻底,在压力24MPa、温度500℃、停留时间120s的条件下,TOC去除率、有机碳气化率和氢气化率分别达到71.46%,67.97%和157.24%;停留时间的变化对气体产物含量没有明显的影响,但延长停留时间能提高PVA的气化效率;PVA气化反应中间产物主要为链状烷烃、环烷烃、芳香烃及小分子酸,根据中间产物出现的顺序推测PVA的降解为由C-C键断裂形成小分子物质,这些小分子物质一部分转化为H2,CO,CH4和CO2,一部分形成难降解的芳香族化合物。
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A series of diazonium salts of 4-(N-methyl-N-phenylamino)-3-amino-1,8-naphthalic anhydride 5a, its naphthalimide derivative 5b, and 5e were designed and synthesized,and it was the first time to discover that aromatic radical-induced intramolecular aromatic 1, 5-hydrogen transfer was also involved in the nitrogen-contianed system during Pschorr cyclization.
实验设计合成了4--3-氨基-1,8-萘酐的重氮盐5a、其衍生物N-丁基-4--3-氨基-1,8-萘酰亚胺的重氮盐5b和N--4--3-氨基-1,8-萘酰亚胺的重氮盐5c,并首次发现了通过普朔尔环化反应以氮甲基化的氮为桥原子的体系存在着芳香自由基诱导的芳香1,5-氢转移。
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Brandy quality could be evaluated through the measurement of pH value, total phenol, colority, catechin, aromatic aldehyde and aromatic acids, Cu content, flavoring compositions, Einstein shift in ultraviolet spectrum, and non-alcohol volatile substances content in Brandy.
可通过测定白兰地的pH、总酚、色调以及儿茶素;芳香醛及芳香酸类物质;紫外光谱的"红移"现象;白兰地中的铜;白兰地中的香气成分;非酒精挥发物总量来评价酒质量。
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Upon CV and DPV experiments, the reduction and oxidation potential of these porphyrins were shown to be similar to each other. This suggests that different PAHs ethynyl substitutes would have similar effects on electrochemical properties of the porphyrin molecule.
在电化学探讨部份,接上不同多环芳香族取代基的紫质分子之氧化还原电位彼此都相当类似,表示这些紫质光敏剂的能隙相当接近,不同的多环芳香族取代基对於紫质分子的电化学性质影响程度相当接近。
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Reaction Chemistry of Aromatic Compounds - Electrophilic Aromatic Substitution: Halogenation, Nitration, Sulfonylation and Friedel-Crafts Alkylation and Acylation.
芳香化合物的化学反应--亲电芳香取代反应:卤化,硝基化,磺基化和Friedel-Crafts 烷基化和醯基化。
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Six kinds of phenyl hydrazone s were synthesized by the reaction of ice bath using aromatic dia- zonium salt and active methylene compounds.
在冰盐浴条件下,芳香族重氮盐与活泼亚甲基化合物反应,合成了六种新芳香族腙类衍生物。
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The molecular charge distribution of the reactivator is affect the reactivating efficacy directly. Moreover its association with hydroximic acid dissociation constant pAa closely, and it will have a great impact on reactivating ability indirectly.(3) There is likely to exist front molecular interaction between Cholinesterase Reactivators and OPC-inhibited AChE, the action sites mainly lie on the aromatic ring, the substitute R and the hydroixic acid group. They act on the aromatic residues of AChE by Π-Π conjugation .(4) The reached results by Comparative Molecular Field Analysis is useful to design new higher efficacy derivatives for 1, 2, 4-oxadiazole class nonquaternary Cholinesterase Reactivators.
2复能剂分子的电荷分布直接影响复活活性,同时对肟酸解离常数pKa具有重要影响,间接影响复活能力;(3)复能剂与磷酰化酶可能存在前线轨道作用,作用部位可能主要在芳香环及其取代基R和肟基上,与AchE的芳香族残基发生л-л电子作用;(4)通过比较分子力场法研究可以指导1,2,4-oxadiazole类非季铵肟胆碱酯酶重活化剂新化合物的合成,可能得到活性更高的复能剂。
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Bouquet and taste: intense vinous scent with notes of marasca cherry, violets and soft fruit.
酒香及口感:有着宜人的花香及成熟果实的芳香,樱桃等水果的芳香。
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Delicious mineral character with citrus fruit, fresh pear and floral aromas of jasmine and orange blossom.
美味的矿物味并伴有柑橘和新鲜梨子的芳香,茉莉和橙花的芳香也很诱人。
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Aromatic Chinese medicine herb had the effects of outthrust evils from the exterior, transforming dampness, repelling foulness, rectifying qi, opening the orifices, circulation and pain-relieving.
芳香性中药辛香走窜具有透邪解表、化湿辟秽、理气开窍、活血止痛等功效;精油因为分子小渗透力高,能有效地进出身体,正符合传统中医理论认为芳香类药物辛香走窜之特性。
- 推荐网络例句
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The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.
采用不同浓度K2CrO4(0,0.4,0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗,测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。
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By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.
通过分析数学形态学在图像中的理论基础,研究二值图像的形态分析算法,探讨最小结构元素的两种基本形态:膨胀和腐蚀;分析了数学形态学复杂算法的基本原理,把数学形态学的部分并行处理理念引入到家实际应用中。
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Have a good policy environment, real estate, secondary and tertiary markets can develop more rapidly and improved.
有一个良好的政策环境,房地产,二级和三级市场的发展更加迅速改善。