精素

Population variation and differences in serum leptin independent of adiposity: a comparison of Ache Amerindian men of Paraguay and lean American male distance runners - Background: Serum leptin variation is commonly associated with fat percentage, body mass index, and activity.

人口变化和差异瘦素独立肥胖：比较酸痛精益美洲印第安人和巴拉圭男子中长跑男-背景：瘦素变化都与脂肪百分比，身体质量指数、活性。

The results of our research showed that the chinaberry seed oil, two emulsion formulations of crude toosendanin, Margosan-O, azadirachtin, AZT(NR-2), AZAL-S, petrolem ether extract of the leaf of Tagetes erecta, methyl extract of the root of Tagetes erecta, methyl extract of the whole plant of Bidens pilosa, the oil of Ageratum conyazoides and polygodial had potent toxicity to the larvae of Anopheles sinensis, Culex quinquefasciatus and Aedes albopitus.

中华按蚊Anopheles sinensis、致倦库蚊Culex quinquefa-sciatus和白纹伊蚊Aedes albopictus都是我国重要的传病蚊种。本研究首次证实下列植物的提取物对上述三种蚊虫有毒杀作用：(1)苦楝：苦楝油；(2)川楝：川楝素乳剂、蔬果净；(3)印楝：Margosan-O、印楝素、AZT(NR-2)、AZAL-S；(4)万寿菊：叶石油醚提取物、根甲醇提取物；(5)三叶鬼针草：整株植物甲醇提取物；(6)百花草：精油；(7)水蓼：Polygodial。

A rapid capillary electrophoresismethod has been developed for the determination of eleven bioactive flavonoids in bee propolis:acacetin,apigenin,cinnamic acid,galangin,ferulic acid,hesperidin,luteolin,naringenin,quercetin,resveratrol,and rutin.

使用毛细管电泳法检测蜂胶中11种黄酮类化合物：金合欢素、芹菜配基、兰肉桂酸、黄良姜精、阿魏酸、橙皮甙、毛地黄黄酮、柑桔黄素、槲皮素、白藜芦醇、芦丁。

Five kinds of bacteria were isolated from disease Meretrix meretrix and culture water (two isolated from the M. meretrix, three from the culture water) in Lvsi harbor, Jiangsu province. The results of infection showed that strain WG1702 can cause disease with the mortality rate 100 percent and the same symptoms as original. It was cued that strain WG1702 was the pathogenic bacteria and caused the death in large scare, a preliminary research was done on the bacteria including morphological, physiological, biochemical characteristics, phylogenetic position and pathogenic. Strain WG1702 was a straight-rod gram negative bacterium, the physiological and biochemical indicators were lysine decarboxylase, ornithine decarboxylase, reduction of NO3- to NO2-, mannitose, oxidase and methylred reaction positive, arginine decarboxylase, arginine dihydrolase, salicin and voges-proskauer negative.

本文从江苏吕泗文蛤养殖区发病文蛤和养殖水体中分离到5株优势菌(病蛤中分离到3株优势菌，养殖水体中分离到2株优势菌)，人工感染实验结果显示，菌株WG1702能引起供试文蛤发病，死亡率为100%，且发病症状与原发病症状相同，提示该菌是引起文蛤大面积死亡的主要致病菌，对其形态、生理生化特征、分类地位及致病性进行了初步研究，菌株WG1702为革兰氏阴性菌，直杆状，生理生化指标为：赖氨酸脱羧酶、鸟氨酸脱羧酶、硝酸盐还原、甘露糖、氧化酶、甲基红阳性，精氨酸脱羧酶、精氨酸双水解酶、水杨素、V.P阴性。

The observations came from patient with healthy reproductive function enrolled in artificial insemination clinic where in semination attempts were well-timed for each menstrual cycle The data had been aligned by the day of ovulation (Day0).determined by serum luteinizing hormone

来自患者健康观察招收人工生殖功能授精诊所输精尝试很及时每次月经周期的数据已对准了一天排卵(day0)。由血清黄体素

Tf in the seminal plasma level of determination, inhibin B Determination is the observation of Sertoli cells and the specific target in evaluated seminiferous speimatogenesis, and can be guide the diagnosis of male infertility treatment.

精浆中Tf水平的测定、抑制素B含量测定是观察睾丸支持细胞功能，评价曲细精管生精功能的一个特异性的指标，对男性不孕的诊断治疗具有指导意义。

In addition, the silica-precipitating and templating roles of protamine were elucidated, and the mediation mechanism of organic molecules in biomimetic silicification was also tentatively analyzed.

最终确定以羧甲基纤维素钠为仿生微囊的液核，制备出具有海藻酸/精蛋白壳膜和精蛋白/氧化硅杂化壳壁的微囊，并用于包埋GUS，催化黄芩苷转化为黄芩素。

It indicated that the yield of tetraploidy not more than 25% induced by inhibiting the first mitosis with CB, colchicine and 6-DMAP, respectively, while it can be induced with higher percentage by blocking PB1releasing with CB. The tetraploidy percentage of groups shock began at 15—22min after fertilization are higher than that shock began at 42min, and the yield of tetraploidy also increased with the CB density and time lasting.

结果表明，CB、6-DMAP和秋水仙素抑制扇贝第一次卵裂诱发四倍体的比例低于25%；采用CB抑制PB1可有效地诱导产生四倍体，从授精后42min提前到15—22min开始处理，抑制PB1的放出有助于提高四倍体的比例，在12℃，处理开始和终止时间分别在授精后20—22min和62—67min时(即PB2始出现时)，面盘幼虫四倍体率最高，为56.5%。

14 Essential oils from Lauraceae in Yinbin area of Sichuan province were determined with GC-MS and retention index of GC for qualitative analysis and microcomputer at on-line real-time sampling for relative content of the components.

为开发四川省宜宾地区樟科植物精油资源，采用GC—MS与气相色谱保留指数定性，微机在线实时采样测定各成分相对含量。结果表明樟属的几种植物其根部精油都主含黄樟油素。

A rat model induced by injecting acetic acid into the subserosa of stomach was used.Uicer index was measured,the level of nitri oxide in serum and plasma endothelin-1(ET-1) was examined.

采用大鼠乙酸性胃溃疡模型，分别以消溃灵灌胃和左旋精氨酸、亚硝基左旋精氨酸腹腔内注射治疗7 d和14 d后，测定溃疡指数、溃疡抑制率，检测血清一氧化氮及血浆内皮素(ET-1)含量。

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。