抑制的

It is existed competitiveness inhibition of 6APA, non-competitiveness inhibition of PAA and substrate inhibition of Penicillin on the hydrolysis of benzylpenicillin to 6APA and PAA by an immobilized penicillin amidase. The heat conductive coefficients were determined on the vacuum elevation liquid membrane concentration. The thermodynamics and kinetics of PAA extraction were studied on the organic solvent extraction of the above solution.

研究证明固定化青霉素酰化酶裂解反应是典型的底物、产物抑制酶反应，其反应动力学数据表明，青霉素、苯乙酸以及6APA对反应分别存在底物抑制、非竞争性抑制和竞争性抑制；真空升膜浓缩适应热敏性以及粘度不大的物系，对于6APA水溶液的真空升膜浓缩过程研究得到了浓缩实验的传热系数；浓缩液萃取主要是提取出其中的苯乙酸，本文测定了不同温度以及溶剂条件下的苯乙酸溶解度，并观测了苯乙酸萃取动力学。

Populations inhibitory effect of two kinds of bitter almond oil against Sitophilus zeamais Mots showed that the populations inhibitory effect of F1 and F′is decreased with the decrease of concentration, the populations inhibitory rate of F1 and F′is between 30% and 100%, 29.39% and 58.19% respectively.

种群抑制活性结果表明苦杏仁精油对玉米象F1代以及F′代的种群抑制活性随着处理浓度的降低而逐渐降低，两种处理的苦杏仁精油对玉米象F1代的种群抑制率范围在30%～100%之间，对F′代的种群抑制率范围在29.39%-58.19%之间。

Results The extract remarkably inhibited the contraction caused by histamine and acetylcholine, as well as the ovalbumin sensitized allergic constriction of isolated ileum smooth muscle of guinea pigs. It could inhibit the increase of capillary permeability induced by acetic acid in mice, inhibit the mice paw edema produced by carrageenin and reduce the production of PGE 2 in inflammatory tissues.

结果：辛夷二氯甲烷提取物对组胺、乙酰胆碱（Ach引起的豚鼠离体回肠收缩具有显著的抑制作用，并能抑制卵白蛋白所致的豚鼠离体回肠过敏性收缩，对HAc引起的小鼠腹腔毛细血管通透性增高具有抑制作用，能显著抑制角叉菜胶引起的小鼠足肿胀，并减少前列腺素E2（PGE2）在炎症组织中产生。

The results indicated that the actual inhibition ratio and the theoretical inhibition ratio of net photosynthate and stomatal conductance of glyphosate-ammonium and fluroxypr-mepthyl (4:1) mixture against Altemanthera philoxeroider were from 80% to 100%, and those of intercellular CO2 concentration, content of chlorophyll and malondialdehyde were above more than 110%, and strong synergism.

结果表明，该配比混剂处理对空心莲子草净光合速率和气孔导度的实际抑制率与理论抑制率的百分比在80%~100%之间，表现出相加作用；而对胞间CO2浓度、叶绿素含量及丙二醛含量的实际抑制率与理论抑制率的百分比均在110%以上，表现出较强的增效作用。

objective to observe the antitumor activities of different solution extracts of plumbago zeylanica l.in vitro.method mtt method was used to detect the inhibitory effects on four kinds of cancer cells.results chloroform extracts had significant inhibitory effects on the breast cancer cell(bre-04),the nerve cancer cell(n-04) and the lung cancer cell(lu-04),ic50 were 0.2699mg/ml and 0.2634mg/ml,0.4961mg/ml respectively.ic50 of chloroform extract on the hepg2 was 0.9379mg/ml.ic50 of petroleum ether extracts on bre-04,n-04,lu-04 and hepg2 was 0.5902mg/ml,0.5725mg/ml,0.7938mg/ml,0.6374mg/ml;ethyl acetate extracts had fairly inhibitory effects on the lu-04,ic50 was 0.7343mg/ml;n-butanol extracts and water-solubility extracts had notsignificant inhibitory effects on the four kinds of cancer cells.conclusion the antineoplastic effective parts of plumbago zeylanica l.were chloroform and petroleum ether extracts.

目的 探讨白花丹体外抗肿瘤作用的活性部位。方法 mtt染色法对白花丹五种溶剂提取物体外抗肿瘤活性进行了初步的研究。结果氯仿提取物对乳腺癌细胞（bre-04）、神经癌细胞（n-04）、肺癌细胞（lu-04）有较好的抑制生长作用，ic50分别为0.269 9 mg/ml、0.263 4 mg/ml、0.496 1 mg/ml，对肝癌细胞hepg2抑制作用差， ic50为0.937 9 mg/ml；白花丹石油醚提取部位对乳腺癌细胞（bre-04）、神经癌细胞（n-04）、肺癌细胞（lu-04）、肝癌细胞hepg2的ic50分别为0.590 2 mg/ml、0.572 5 mg/ml、0.793 8 mg/ml、0.637 4 mg/ml；乙酸乙酯提取物对肺癌细胞（lu-04）有一定的抑制作用，ic50为0.734 3 mg/ml；水溶性提取物以及正丁醇提取物无明显抑制肿瘤作用。结论白花丹氯仿提取部位、石油醚提取部位体外抗肿瘤作用较好，值得对其提取部位进一步分离纯化并研究其抗肿瘤作用机制。

The experimental results showed that the crude toxin of Phytophthora capsici could inhibit the germination of seeds, the growth of seedlings, and the growth of pepper radicel and the callus of pepper extremely.

结果表明，粗毒素能使辣椒叶片产生与疫病病原菌侵染类似的水渍状褐腐斑，抑制辣椒种子的发芽率，抑制辣椒幼苗和胚根的生长，抑制辣椒愈伤组织生长，并且粗毒素的这些抑制作用随着其浓度的升高而变强，不同品种所得出的实验结果一致。

Thirdly, we also examine the effect of these extracts on maize seed germination rate, maize seeding height and fresh weight, and the results show that three extracts are safe to maize at the concentration of 1:20, with a inhibit rate under 4 %.We further identified and purified organic acids, alkaloids hydroxybenzenes and neutral materials from extract and examined their effects on Amaranthus retroflexus L. seeds.

实验结果表明在干样：水为1：50以内，这三种向日葵的叶片提取液对反枝苋种子萌发和幼苗株高、鲜重及出叶数的抑制效果都非常显著；随着提取液浓度的下降抑制作用也呈明显的下降趋势；通过实验数据比较，这三种向日葵叶片提取液对反枝苋种子萌发抑制和对反枝苋幼苗株高、鲜重及出叶数的抑制效果略有差异。

PPARα ligands suppressed OPN promoter actiity, and an actiator protein-1 consensus site conferred this repression. Oerexpression of c-Fos and c-Jun reersed the inhibitory effect of PPARα ligands on OPN transcription, and, in chromatin immunoprecipitation assays, PPARα ligands inhibited c-Fos and phospho–c-Jun binding to the OPN promoter.

PPARα配体可抑制OPN启动子活性，一个激活蛋白-1的一致序列位点与这种抑制有关。c-Fos和c-Jun的过表达可逆转 PPARα配体对OPN转录的抑制作用，并且在免疫沉淀实验中，PPARα配体可抑制c-Fos及磷酸化c-Jun与OPN启动子的结合。

The result expressed that under the concentration of 0.2mg/mL, the 6 compounds are all active to Sarcina lutea, ME-1, MT-6, MT-land MT-7 are active to Bacillus megaterium, to Escherichia coli, only MT-2 is active. The dimeric natural products are intensively existed in botany, most of them have the obvious biological activities. They have been concentrated on in recent years, and they are one of the compounds to which are enjoyed great popularity in natural product.

结果表明，在浓度为0.2mg/mL的条件下，六种化合物对藤黄八叠球菌均具有明显抑制作用，ME-1、MT-6、MT-1、MT-7对巨大芽孢杆菌有抑制作用，MT-2对大肠杆菌有抑制作用，对绿脓杆菌和枯草芽孢杆菌六种成分均无抑制作用；二聚体化合物在植物界广泛存在，多数二聚体天然产物具有显著的生物活性，引起人们的重视，是天然产物化学界研究的热门化合物之一。

The inhibitory effect of the volatilizable metabolites of two antagonists to P.funerea was analyzed in contrast with the inhibitory rate of the control . Gvirens , with the highest inhibitory rate of 59.7%, had more excellent and stable inhibitory activity and the effect was more relative with the time, but the inhibitory rate of B.firmus was less relative with the time and the inhibitory effect of B.firmus became stable after 72 hours.

两种颉抗菌代谢物中不同成份的抑菌效应试验表明，G.virens产生的多糖、粗脂肪、蛋白质对P.funerea孢子萌发有抑制作用，粗脂肪、蛋白质更明显，其中蛋白质抑制效果较稳定；B.firmus产生的粗脂肪可完全抑制P.funerea的孢子萌发，多糖、蛋白质抑制效果也较稳定，但多糖效果更好。

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。