酸化剂

Methods: Separate and abstract the effective components of Huangqi (Omni-Saponin、total-flavone) and Danshen (Danshen-ketone、 Danshen-Quinone). Applying L-Arginine methyl ester to pregnant rats by I. P to make Nitrogen Oxide Synthesis blocking models (uterus-placenta-fetus lacking blood and oxygen model or pregnant hypertension syndrome model). On day 12, 18 of pregnancy paunched the rats and took out the fetus and placenta/uterus. Measured the basal BP during pregnant period and BP、protein、basal activity each day. Observed placenta/deciduas ultramicroscopic structure by electron microscope and took count of languishment cells. Measured the expressive intensity of bcl-2、Bax of placental nutrient cells by SABC method.

一氧化氮合成酶阻滞剂L-精氨酸甲酯妊娠大鼠腹腔给药，制作一氧化氮合成阻滞模型（子宫-胎盘-胎儿缺血缺氧或妊娠高血压模型），妊娠第12、18天剖腹取胎、胎盘／子宫，妊娠期测基础血压，每日测血压、蛋白质量、基本生理活动；电镜观察胎盘／蜕膜超微形态结构，并进行细胞凋亡计数；免疫组化检测胎盘滋养细胞bcl-2、Bax表达强度；原位杂交法检测胎盘滋养细胞、血管内皮细胞VEGF、eNOS、iNOS、MCP-1、MMP9（基质金属蛋白酶9）mRNA表达。

The results indicated that at the inhibitor dosage of 0.4%, mole ratio of methacrylic acid to MPEG of 1.5:1 and reaction temperature of 120 ℃, the yield of MPEGMA could reach 92.3%.

结果表明：阻聚剂质量分数为0.4%、酸醇摩尔比为1.5：1、反应温度为120℃时，酯化率可达到92.3%。

We demonstrate that both the IL-5 mRNA expression and IL-5 protein production were stimulated by TSA and NaBu treatments. Chromatin immunoprecipitation assays showed that treatments of TSA and NaBu caused hyperacetylation of histones H3 and H4 at the IL-5 gene promoter in Jurkat cells, which consequently promoted the exogenous luciferase activity driven by this promoter.

TSA和丁酸钠能促进IL-5基因的mRNA和蛋白的表达水平，并增强该基因启动子所介导的外源荧光素酶报告基因的活性，这一增强作用与两种抑制剂介导的IL-5基因启动子上组蛋白H3和H4的高乙酰化有关。

The first and second insert organophilic montmorillonite are prepared from sodium dodecylsulfonate and cetyltrimethylammonium bromide.

采用十二烷基磺酸钠及十六烷基三甲基溴化铵对蒙脱土进行了一次、二次插层改性，红外光谱和X射线衍射表明，两种有机插层剂均已进入蒙脱土的层间，有机蒙脱土的层间距由1.22 nm增加到3.64 nm；沉降实验结果表明这种改性蒙脱土在有机介质中表现出很好的分散性。

During these years (1997-2000) in the research area of annonaceous acetogenins 5 natural products and a number of chiral-pure analogs of annonaceous acetogenins have been synthesized using sugars as the starting materials. Their high activity and selectivity against cell line of colon tumor and a relationship between activity and configuration have been found too. In the respect of inhibitor of sialidase two new methodologies for the synthesis of chiral-pure 3-deoxy-ulosonic acid using hetero-Diels-Alder reaction or asymmetric propargylation as the key reaction were developed. On the topic of anti-leukemia marine natural product clavulactone a synthetic method based on the free radical cyclization and starting from sugar has been developed. In other title of PKC inhibited agent sphingosine a new synthetic route with SN2' as the key reaction has also been disclosed.

项目期间（1997-2000）在番荔枝内酯方面从糖出发合成了五个天然产物和一批手性纯的类似物，它们对肠癌细胞有很高的活性和选择性，并与构型有关；在唾液酸酶抑制剂方面发展了二类全新手性纯高碳糖的合成方法－杂原子D－A反应或丙炔基不对称加成为关键的反应；抗白血病海洋天然产物群柱虫内酯方面研究了由糖出发和自由基环化反应的合成方法；对PKC 起抑制作用的鞘氨醇方面也开创了新的合成途径－由糖出发并以SN2'反应为关键反应。

In all tests,the boronised sulfonate detergents showed better performances in comparison with the conv ...

在所有的对比试验中，硼化磺酸盐清净剂均显示了较好的特性。

Radiation crosslinking; PE foam; Flame-retardation. Capsulated red phosphorus; Titanate coupling agent

辐射交联；聚乙烯泡沫塑料；阻燃；微胶囊化红磷；钛酸酯偶联剂

Benzyl bromide was synthesized from dibenzyl ether and hydrobromic acid with SO42-/ TiO2 as catalyst and cyclohexane as dehydrant.

以二苄醚和氢溴酸为原料，SO42-/TiO2为催化剂，环已烷为带水剂，合成了溴化苄。

In this paper, the thermally reversible crosslinking reaction and the properties of synthesized TPE based on the reactions of chlorine containing polymers such as PVC , chlorined polyethylene , epichlorohydrin rubber and acrylic rubber with salts of dicyclopenladienyl dicarboxylate crosslinking agents were studied.

本研究以环戊二烯二酸盐衍生物作热可逆共价交联剂，通过与聚氯乙烯、氯化聚乙烯、氯醚橡胶和丙烯酸酯橡胶等含氯聚合物的脱MX酯化反应来实现共价关联，并制取相应的新型TPE。

The results showed that pectinase activity can retained up to 95.2% when prepared with 4.0% sodium alginate, 0.20 % glutaric acid, 0.10 mol/L CaCl2, 0.50 mL pectinase. The recovery activity of the immobilized pectinase was more than 76% after repeated 10 times.

结果表明，以4.0%的海藻酸钠为载体、0.20%的戊二醛为交联剂、0.10mol/L的CaCl2为凝聚剂、用酶量为0.50mL时所得的固定化果胶酶活力保存率可达95.2%，回收使用10次以后，酶的活力回收率为76.1%。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。