合成物质

To prevent the comingling of organic and nonorganic materials, the program forbids the use of packaging and containers exposed to prohibited substances, such as synthetic fungicides or preservatives.

为防止有混杂不清的有机及无机材料，该计划禁止使用包装和容器接触违禁物质，例如合成杀菌剂或防腐剂。

Methods The plasma levels of CGRP in 59 cases of normal pregnant women, 57 cases of PIH, and 10 cases of nonpregnant women were determined with a sensitive radioimmunoassay.

是由周围血管神经纤维末梢和甲状腺C细胞合成、分泌的，广泛分布在神经组织以及某些器官中，是体内较强的血管舒张物质，参与血压动态平衡的维持及器官血流的调节［2，3］。

Thus, in order to attain acetal can be used as precursor of its matrix olefine aldehyde, 2-undecental glycol acetal was synthesized, and the corresponding optimum reaction conditions as: 2-undecental 0.2mol, glycol 0.3mol, cyclohexane as solvent, catalysed by vitamin C, the optium reaction time was 6h, its reaction yield could reach over 77.25%.

为了进一步探求效果更理想的前体化合物，本文继续合成了2-十一烯醛乙二醇缩醛，通过单因素优化实验得到最佳反应条件为：环己烷作溶剂，VC作催化剂，用量0.42%，醛醇物质的量之比0.2：0.3，反应时间6h，此条件下产品收率达77.25%。

HAP could be synthesized and used as a artificial bone replacement material, which acted as a scaftold for the skeletal ingrowth; and autogenous red bone marrow had the osteogenous cells and substances which could form new bone.

国外文献报道可采用人工合成HAP并用作骨的替代物，起到骨生长的支架作用；而自体红骨髓（Bone-Ma-rrow简称BM）含有成骨功能的细胞和物质，起成骨作用。

All dates were analyzed by the principal component analysis through using the SIMCA-P 10.0 software. Result: The PCA demonstrated that the metabolome between treated group and control group had difference in rat urine sample after of 22 days administrated, for treated group 169 kinds of biomarkers were found including oxalacetic acid, malic acid, 2-ketoglutaric acid, NE, arachidonic acid, 5-HIAA and other compounds, the result was consistent with pharmacological effects of R.coptidis , such as antiinflammatory, inhibiting biosynthesis of CA biosynthesis, anti-central nerve and energy metabolism inhibition.

结果：给药22 d，黄连组与对照组大鼠尿样代谢组有较大差异，发现了169个生物标记物，其中可能的化合物为草酰乙酸、苹果酸、2-酮戊二酸、去甲肾上腺素、花生四烯酸、5-羟吲哚乙酸等物质，这与黄连抗炎、阻止儿茶酚胺的生物合成、抑制中枢神经、降低能量代谢的药理作用相一致。

In the cardiovascular system, the endogenous NO, CO, and H2S form three specific and relevant pathways with their corresponding enzymes including nitric oxide syntheses, the home oxygenize and cystathionine-r-lyric enzyme, whose affect can relieve the atherosclerosis.

血管系统中内源性气体信号分子NO、CO、H2S作为一种独特的血管活性物质，分别与其相应的合成酶一氧化氮合酶、血红素加氧酶和胱硫醚－r-裂解酶形成独立而又相互关联的体内重要抗氧化系统，可以减少动脉粥样硬化的严重度。

There are four kind of isoforms of endothelin in human and other mammals named ET-1, ET-2, ET-3 and ET-β, which are slightly different in construction and pharmacological effect. In human beings, ET-1 is the dominative subtypes. ET-1 remains in blood at a low level about 5ng per liter on physical state. It is synthesized, stored, released and metabolized locally. The half-life of ET-1 is about 1 hour. ET-1 is the most potent vasoconstrictive factor till now, and it is more functional in vein than in artery. In vascular bed, there are two kind of ET receptors. Type A mainly located in smooth muscle cells, whereas type B in endothelial cells. The latter can stimulate intimal hyperplasia via a parasecretion way and activate some oncogenes such as c-fos and c-myc and then enhance their expression. These alterations result in constriction of blood vessels, thus the SMC steps into proliferate state from silent state.

人及哺乳动物体内有四种结构及药理学性质略有差异的异物体，分别为ET-1、ET-2、ET-3、ET-β，而在人主要是ET-1，在生理条件下，ET-1在血浆中含量较低，约为5ng〓，故ET-1不是一个循环激素，而是局部合成释放，局部起作用的活性物质，半衰期约1小时，ET-1是目前已知的最强的血管收缩剂，对静脉的作用比动脉强，在血管床，ET受体有A、B两型，A型主要分布在平滑肌细胞，B型主要分布在内皮细胞，它可以通过旁分泌途径刺激内膜增生，具有有丝分裂原效应，可以激活某些癌基因如C-fos、C-myc使其表达增强引起血管收缩，使静止期SMC进入增殖期，还可以通过信号传导途径，与bFGF、GTF-β、PDGF等生长因子协同作用，起共有丝分裂原作用。

The separation of 1-(2,6-dichlorophenyl)-2 - indolone and related materials in the synthesis of medical intermediate DC I from 2,6-dichlorophenol and phenylamine was investigated with high performanc e liquid chrom atography under different chromatographic conditions.

应用高效液相色谱方法研究了以2，6-二氯苯酚和苯胺为起始原料合成药物中间体1-(2 ，6-二氯苯基)-2-吲哚酮过程中，DCI及相关物质在不同色谱条件下的分离情况。

The mature egg cell was an inactive cell with only a few polysomes. At the early zygote stage, a large number of ribosomal precursors were produced by the nucleolus, and many polysomes appeared in the cytoplasm, which suggests a high level of metabolism. Zygote at the dormancy stage had a small nucleolus and marked decrease in ribosomes, as shown by a few polysomes, which suggests decreased metabolism. Zygotes in the prophase of mitosis and two-celled proembryo became active again in metabolism, for a prominent nucleolus, high density of ribosomes and increased number of polysomes in the cytoplasm.

结果如下：在成熟卵细胞中多聚核糖体数量不多，且细胞代谢活性较弱；初期合子内，核仁大量合成核糖体前体物质，胞质中多聚核糖体数目众多，细胞代谢活性较强；休眠期合子的核仁变小，胞质中核糖体数量急剧减少，仅有少量多聚核糖体，细胞代谢活性较弱；合子分裂前期和二细胞原胚期，核仁显著，胞质中核糖体的密度增加，出现大量多聚核糖体，细胞代谢活性较强。

Injured cells appear to require synthesis of some essential cell materials, that is, ribonucleic acid or enzymes before recovery is accomplished.

受杀伤的细胞似乎要合成一些必不可少的细胞物质，如核糖核酸或酶类，然后才能达到完全复原。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！