二分子

ABSTRACT Trehalose is a nonreducing disaccharide with two glucose residues.

海藻糖是由二个葡萄糖分子组成的非还原性双糖。

Trehalose is a disaccharide consisted of two subunits of glucose withα-1,1 glucosidc bond .It has biology functions of unique anti-frozen and anti-dehydration.

海藻糖是由2分子的葡萄糖经α-1，1糖苷键结合而成的非还原性二糖，具有独特的抗冷冻和抗脱水的生物学功能。

Polyfluoroalkyl iodides could react with unsaturated olefin acids in the presence of sodium dithionite by radical addition to give adducts. It was found that these adducts could form polyfluoroalkyl substituted γ or δ-lactones due to intramolecular nucleophilic substitution in the alkali solution.

研究发现：多氟烷基碘化物在连二亚硫酸钠存在下与不饱和烯酸经自由基加成得到的产物，能在碱性条件下进行分子内亲核取代反应形成五元或六元环的含氟内酯类化合物。

Each Ln ion adopts a dodecahedron coordination environment with eight coordinated oxygen atoms from two terminal monodentate coordinated FcC6H4COO- units, two terminal monodentate coordinated H2O molecules, and fourμ_2-η~2--OOCH_4C_6Fc units.

稀土离子都是八配位的三角十二面体构型，其中两个来自单齿配位的FcC6H4COO-，两个来自配位的水分子，四个来自双齿桥联的μ_2-η~2--OOCH_4C_6Fc。

X-ray crystal diffraction reveals that complex 1 displays one-dimensional double chain structure; complex 2 is a two-dimensional supramolecule formed by hydrogen bonds.

其中，配合物1呈一维链状结构；配合物2是一个通过氢键作用而形成的二维超分子。

The calculated IC times of chl-a in ethyl acetate, tetrahydrofuran and dimethyl formamide are 141, 147, and 241 fs, respectively.

计算得到的叶绿素a分子在乙酸乙酯、四氢呋喃和二甲基甲酰胺溶剂中的内转换时间分别是141、147和241 fs。

To examinate the thermal properties by TGA、DSC and figure out the maximum decompose temperature which survey the range of liquid crystal temperature. We synthesize conjugated polymer successfully and these emitted blue fluorescence. Hope this experiments will supply well-contribution in field of organic light-emitting diodes.

以TGA、DSC测定其热性质，并了解到由TGA的5%热重损失温度再进行测出液晶温度范围，我们成功的合成出具有良好的加工性的共轭性分子，发光性质都出现在蓝光领域，愿在有机发光二极体的领域上有重大的贡献。

Wesynthesized (2E, 6E)-farnesol 12 starting from compound 24 by three steps.The optical sesquiterpenoid 14 was synthesized starting from--citronellol with a 28% overall yield, and the absolute configuration of 14 wasinfered (3R, 7S)-3, 7, 11-trimethyl-10-oxododecanoic acid on the basis of thechirality of starting material and biogenic relation.

以手性--香茅醇为原料，经七步反应也合成了旋光活性的目标分子14，结合生源关系，推测天然产物14的立体结构为(3R，7S)-3，7，11-三甲基-10 氧代-十二碳酸；对手性中间体34经脱除羰基得到手性天然产物(3R.7RS)-六氢法呢醇13。

Ribose 5-phosphate and its derivatives are components of important cellular molecules such as RNA, DNA, NAD+, flavine adenine dinucleotide, ATP and coenzyme A.

5-磷酸核糖和它的衍生物是细胞内分子如RNA、DNA、NAD+、黄素腺嘌呤二核苷酸、ATP和辅酶A的主分成分。

Due to its linear chain structure, polyacrylamide, combined with DDA, tends to form the high molecular collector with more surface activities. In addition, with the high molecular weight, polyacrylamides (with the exception of hydroxamic acid polyacrylamide) can strongly flocculate kaolinite, which can increase the adsorptive density of collector and activate the kaolinite flotation.

由于分子的直链结构，聚丙烯酰胺药剂易与捕收剂十二胺形成表面活性更高的高分子捕收剂，同时由于聚丙烯酰胺具有较高的分子量，对高岭石显示很好的絮凝作用，增加了捕收剂的吸附密度，活化了高岭石的浮选。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新