等浓度

The effect of six chemical disinfectants of different quality concentrations, namely, povidone iodine、dibromohydantoin、formalin、trichloroisocyanuric acid、calcium hypochlorine and sodium hypochlorite, on the species and quantities of plankton in cultured water were studied.

采用不同质量浓度的聚维酮碘、二溴海因、福尔马林、富氯、漂粉精和次氯酸钠等6种化学消毒剂，对蓄水沉淀池养殖海水进行消毒处理，处理前后分别测定浮游生物种类和数量变化。

The measurement of carboxyl end group content in PBT was discussed with an automatic potentiometric titrator.

采用全自动电位滴定仪测定PBT切片的端羧基含量，对称样量、溶剂的配比、滴定剂的浓度等进行了正交优化。

In order to decolorize the polysaccharide from Cardamine enshiensis ,the hydrogen peroxide was used to be reagent for decolorizing the polysaccharide,and the time,temperature,pH as well as the concentration of hydrogen peroxide were selected to be factors for the experiment of single factor,then the orthogonal test with four factors and four levels was carried out on the aforementioned basis.

为了脱除碎米荠多糖液中的色素，以过氧化氢(H2O2)为脱色剂，选择脱色时间、脱色温度、pH值和过氧化氢的质量百分比浓度等因素为试验因素，进行单因素试验，以此为基础进行4因素4水平的正交试验。

The influence of the relevant parameters such as temperature, water content, the concentration of castor oil and the enzyme was investigated.

考察了在微乳液中温度、含水量、底物和酶浓度等对该反应的影响。

32Suaeda salsa plants grown in the intertidal zone and high salinity soils at elevation and land far from the seaside of the Yellow River Delta were used to study the relations of leaf succulence to ionic contents in cell sap and in saline soils.

以黄河三角洲内地重盐碱地和海边潮间带两种生境下的盐地碱蓬为材料，比较叶片肉质化及叶片细胞液和土壤中离子浓度等内外因素，探讨影响盐地碱蓬叶片肉质化的主要因素。

But when the cholesterol was substituted by its oxide result, the membrane life time extended to nearly 60 hrs ;besides the diameter of the hole on which the membrane exists 、temperature、PH value cause great effects to the life time of the membrane, and the diameter was the most important element. When the diameter larger than 3mm it is almost no way to form a membrane on the hole under experiment condition. Between 1mm and 3mm it has a better result by change the prescription of the membrane. when it is 0.5mm all the membrane can last more than 40 hrs ,and the prescription like Och : phosphatidylcholine / cephalin＝4:1; 3:1; 2:1; 1:1; 2:3 need the request of the experiment basically, when cooperate with multi hole structure it is very to detect the concentration and found the model.

研究结果说明，成膜在普通胆固醇/磷脂配方下不能达到满意的结果，无论如何改变外界条件成膜始终超不过7小时，而将胆固醇换成氧化胆固醇再和磷脂按照一定配比的时候，成膜时间则大大延长，可达60h左右；另外除成膜配方，成膜孔径、温度、PH值等因素对成膜有着很重要的影响，成膜孔径对膜的影响最为关键，在3mm以上的孔径时成膜比较困难，在1－3mm适当提高成膜液浓度可以改善，孔径为0.5mm左右成膜比较稳定基本都能达到40h以上，合适的几个配方如卵/脑磷脂：氧化胆固醇＝4：1；3：1；2：1；1：1；2：3基本满足实验要求，配合一板多孔结构，可以保证单位时间的离子传输量的检测和计算。

Objective: To study osteogenic capability of rabbit bone marrow stromal cells and biological characteristical identification in vitro in order to explore the appropriate methods of osteoblast culture in vitro and to select an idea source of seed cells for bone tissue engineer.

目的：研究兔骨髓基质细胞在体外培养条件下的成骨能力及生物学特性，探讨简便易行的成骨细胞体外培养方法，为组织工程选择理想的种子细胞来源。方法：取新西兰白兔骨髓液经离心后得骨髓单个核细胞，以1× 106／ml的细胞浓度进行培养，经传代培养，选择条件培养液培养(1640完全培养液中加入地塞米松10-8Smol／l，β-甘油磷酸钠10mmol／l，VitC 50μg／ml)作为骨髓基质细胞增殖和成骨的调节因子，通过倒置显微镜、HE染色、扫描电镜、碱磷酸酶(alkaline phosphatase，ALP)测定、Ⅰ型胶原免疫组化染色和四环素荧光钙染色等手段对获得的细胞进行生物学特性研究。

The effects of different concentrations of terramycin and chloromycetin on biomass, size, and contents of chlorophyll and carotenoid in alga Platymonas subcordiformis were studied under room temperature.

在室温下。研究了不同浓度的土霉素和氯霉素对亚心形扁藻细胞的数量、大小以及叶绿素、类胡萝卜素含量等方面的影响。

The concentrations of cefoperazone sodium, chloromycetin, ciprofloxacin lactate and gentamycin sulfate showed significant influence on the coagulation time and detection rate of fibrinogen in plasma.

结论头孢哌酮钠、氯霉素、乳酸环丙沙星、硫酸庆大霉素等抗菌素及其浓度变化对血浆中纤维蛋白原的凝固时间和检出率有显著影响。

Objective: To discuss the influences of the concentrations of sodium cholate, cholesterol and drug, preparation temperature, ultrasonic time and power on the particle size and encapsulation efficiency of Flos Magnoliae volatile oil nano-liposome through film-ultrasonic wave technique together with membrane filter method.

目的：采用薄膜分散-超声-膜过滤法制备辛夷挥发油纳米脂质体，考察胆酸钠、胆固醇、药物浓度、超声功率和超声时间等因素对辛夷挥发油纳米脂质体粒径及包封率的影响，并对纳米脂质体的形貌、稳定性进行分析。

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