色质

After MS interpretation, three decomposed products, trichloroacetaldehyde, dimethyl phosphite and dichlorvos were identified.

利用气相色谱-质谱联用技术对敌百虫在气相色谱分析过程中产生的分解产物进行定性研究。

Retinogenesis; photoreceptors; visual pigments; color vision; photoreception; phototransduction; visual purple; opsin; rhodopsin; retina; 11-cis-retinal; vitamin A; chromophores; fovea centralis; macula lutea; recoverin; guanylate cyclase

retinogenesis；光感受器；视色素；色视觉；光感受；光传导；视紫红质；视蛋白；视紫质；视网膜；11 - cis -视网膜的；抗干眼醇；发色团；中央凹；黄斑；恢复蛋白；鸟苷酸环化酶首页上一页共有 15 条记录，本页从第 11 到第 15 条。

objectiveto predict the promoting effect of chinese medicine on proliferation of rat bone marrow mesenchymal stem cells by bioactivity fingerprint in vitro.methodsthe ointment of plastrum testudinis was extracted by petroleum ether,ether and dichloromethane in burn to gain the extracts.the effects on the proliferation of bmmscs were examined by mtt assay and flow cytometry analysis, and each sample was studied by gc-ms.

目的运用生物活性指纹图谱预测其它中药能否促进骨髓间充质干细胞（bone marrow mesenchymal stem cells，bmmscs）。方法龟版浸膏依次用石油醚、乙醚、二氯甲烷提取，得到溶剂提取物，用mtt 比色法及流式细胞仪器研究了溶剂提取物干细胞活性，采用gc-ms 技术研究每一个提取物，根据总离子流色谱图的相同保留时间和相应峰面积，获得龟版浸膏 gc-ms 生物活性指纹图谱。

Membrane affinity quantified by IAM and liposome/buffer systems was a more efficient predicator of α values than hydrophobicity from n-octanol/buffer system. Consequently, not only hydrophobic force but also attractive polar extra-interactions involved in the binding to IAM and liposomal membranes but not in an n-octanol phase, ascribed to the binding process within AM. The binding to ordered lipid membrane in the larger part determined drugs'binding to AM intracellular compositions, and the ordered phospholipid plasma membrane was a potential site for drugs'binding in AM.

脂质体／水系统和磷脂膜色谱所测定的膜亲和性比正辛醇／水系统的疏水性更好的预测巨噬细胞内药物的α值，因此包含在磷脂膜色谱中但并不体现在正辛醇／水系统中药物与磷脂膜之间的额外吸引性极性作用力对药物在细胞内结合有着重要贡献；药物与有序磷脂膜的结合在很大程度上决定着药物与巨噬细胞内成分的结合，有序磷脂分子膜可能是巨噬细胞内部潜在的结合部位。

Based on GC and GC-MS analyses, the geochemical characteristics of these typical deep viscous oils are listed as follows:(1) strong preference of even n-alkanes over odd n-alkanes;(2) strong preference of phytane over pristane, i. e. Pr/Ph ratio＜＜1;(3) high abundance of gammacerane relative to C〓hopanes;(4) much more amounts of C〓 pentakishomohopanes than C〓 tetrakishomohopanes and even C〓 trishomohopanes.

罗家—垦西地区稠油饱和烃色谱、色谱-质谱分析结果展示：(1)正构烷烃具有明显的偶奇优势；(2)类异戊二烯烷烃具有较强的植烷优势，姥姣烷/植烷比值远小于1；(3)伽玛蜡烷相对含量(相对于C30藿烷)普遍很高；(4)C35升藿烷明显高于C34、甚至C33升藿烷；表现出膏盐湖相生物标志物的组成特征。

Identification, synthesis,and biology of the sex pheromone for Holcocerusinsularis Staudinger(Lepidoptera:Cossidae)were studied by means of gaschromatography,gas chromatography-mass spectrometry,electroantennogram,microchemical analysis,electron microscope,transmission electron microscope,and field tests in this dissertation.

本学位论文以危害白蜡、国槐等园林树木的重要蛀干害虫小线角木蠹蛾Holcocerus insularis Staudinger为对象，利用气相色谱、气相色谱-质谱联用、微量化学反应、触角电位、电镜技术和田间试验等技术与方法，完成了小线角木蠹蛾性信息素的鉴定、合成与生物学研究。

ABSTRACT Bacillus subtilis tryptophanyl-tRNA synthetase was expressed and purified by the aid of the high-level expr...

利用枯草杆菌色氨酰tRNA合成酶的高表达质粒pKSW1表达和纯化了枯草杆菌色氨酰tRNA合成酶。

Basing on the equation of state and the thermodynamic properties of an ideal Bose gas, one can obtain the general expressions of the efficiency and work output of a Brayton power cycle using an ideal Bose gas as the working substance.

根据态方程和玻色气体的热力学性质，获得以理想玻色气体为工质的布雷顿热机效率和输出功的普遍表达式，分析气体的量子简并性对布雷顿热机性能的影响。

Anthocyanidin extract in methanol showed 3 absorption peaks, at 270, 340 and 520 nm, in the UV-vis spectrum, with bathochromic and hypsochromic shift with methanol+AlCl3 and methanol+AlCl3+HCl, respectively; the ratio of the absorbance at 440 nm to that at 520 nm was 0.29. No fluorescence occurred under UV irradiance, and 5 absorption peaks occurred at 270 nm after HPLC. Five molecular ion peaks occurred on MS: 595, 381, 611, 587 and 571, respectively, and monosaccharides in the extract were identified as rhamuose and glucose on HPLC.

一品红花色素的甲醇溶液分别在270、340 和520 nm 处有 3 个吸收峰；在 440 nm 吸光度与可见光最大吸收波长 520 nm 吸光度的比值为0.29；花色素的甲醇溶液中加入AlCl3后发生红移，再加入HCl后发生蓝移；色素溶液在紫外光下无荧光；色素样品经液相色谱分离后在 270 nm检测有 5 个比较明显的吸收峰；质谱中得到 595、611、381、571 和 589 等对应的分子离子峰；花色素酸解液高效液相色谱图谱和鼠李糖、葡萄糖的出峰时间一致。

The volatile organic compounds produced in the laser-sculpture process of bicolor board were studied using cold trap condensation-gas chromatography-mass spectrometry.

研究了冷阱浓缩气相色谱－质谱法检测双色板在激光工艺雕刻过程产生的挥发性有机污染物的组成。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐