浓度

The variables considered in this study were the metallic substrate (cold rolled steel and phosphatized cold rolled steel), the thickness (20 and 25 mm), and finally the deposition potential in the cataphoretic cell...

红外光谱显示，作为材料老化的标志，羰基浓度随照射时间的增加而增加，但是紫外线结果显示羰基峰值随照射的增加而降低。光程长度、羰基浓度的变化以及C–H。。。

The third passage chondrocytes were divided into blank group, different desity PAP groups, different desity glucosaminsalfate groups which were passaged to 4th generation and contrast to the 2nd passage group. The chondrocytes of different groups were detected with the method of histochemistry for S-A-β-gal,and with alcian blue test for the content and constructure of GAG of ECM, immuocytochemistry for type Ⅱcollagen and PCNA, MTT assay for proliferation, RT-PCR for type Ⅱcollagen and Aggrecan, flow cytometry for cell life cycle and proliferation index,by which to observe PAP's function regarding to the appearance and functional status in the process of chondrocyte's cataplasia and senescence.

将P3软骨细胞分为空白对照组、鹿茸多肽不同浓度组、硫酸氨基葡萄糖不同浓度组进行传代培养，同时以P2代软骨细胞为对照组，进行组化检测老化相关β-半乳糖苷酶，阿力新蓝染色检测胞外基质硫酸GAG含量和结构，MTT比色检测增殖，免疫细胞化检测PCNA和Ⅱ型胶原，RT-PCR检测Ⅱ型胶原、Aggrecan蛋白，流式细胞仪分析细胞周期和增殖指数等方法，对鹿茸多肽抗软骨细胞退变老化进行分子生物学研究。4。

The 3rdpassage chondrocytes were divided into blank group, different concentration PAP groups,different concentration glucosaminsalfate groups and were sequently passaged to 4thgeneration. The 2nd passage chondrocytes was contrasted as young cells group. Thechondrocytes of different groups were detected with the methods of histochemistry forS-A-β-gal, and with alcian blue test for the content and constructure of GAG of ECM,immuocytochemistry for typeⅡcollagen and PCNA, MTT assay for proliferation, RT-PCRfor typeⅡcollagen and Aggrecan, flow cytometry for cell life cycle and proliferationindex,by which to observe PAP"s function regarding to the appearance and functional status inthe process of chondrocyte"s cataplasia and senescence.

将P3软骨细胞分为空白对照组、鹿茸多肽不同浓度组、硫酸氨基葡萄糖不同浓度组进行传代培养，同时以P2代软骨细胞为对照组，进行组化检测老化相关β-半乳糖苷酶，阿力新蓝染色检测胞外基质硫酸GAG含量和结构，MTT比色检测增殖，免疫细胞化检测PCNA和Ⅱ型胶原，RT-PCR检测Ⅱ型胶原、Aggrecan蛋白，流式细胞仪分析细胞周期和增殖指数等方法，对鹿茸多肽抗软骨细胞退变老化进行分子生物学研究。4。

Because hypocretin-1 levels were not significantly influenced by the use of psychotropic medications or by the presence of other sleep disorders, this testing "may therefore be most useful in cataplectic patients in whom treatment has been initiated, and/or when other sleep disorders may confound the MSLT," the authors write."The MSLT remains the test of choice in patients without cataplexy since very few subjects in this category had low CSF hypocretin-1 levels."

因为hypocretin-1浓度不会明显地受到精神药物或其它睡眠障碍的影响，因此这项检查「可能对那些已经开始治疗的猝倒症患者，或当其它睡眠障碍混淆了多重入睡时间检查的测量时非常有用」，「多重入睡时间检查目前仍然是无猝倒症的最佳检查方式，因为这类患者的脑脊液中，hypocretin-1极少会有低浓度的现象」。

Rarely, subjects without cataplexy or HLA-DQB1*0602, or those with secondary narcolepsy, had low CSF levels of hypocretin-1. Healthy controls, neurological controls without sleep disorders, and subjects with other sleep disorders all had normal or intermediate levels.

然而罕见的是，没有猝倒症也没有HLA-DQB1*0602的患者，或其它次发性猝睡症患者，他们在脑脊液中的hypocretin-1浓度都很低；而在健康的对照组中，不管有没有任何睡眠障碍，他们脑脊液中的hypocretin-1浓度皆正常或为中等含量。

All geothermal water samples show high concentration of F, Si, Sr and Fe.Concentration of Fe, Si, and Sr ions is mainly controlled by solubility of fluorite, quartz andchalcedony, and celestite, respectively.

其中，F离子浓度主要受控于萤石的溶解；硅含量主要受控于石英和玉髓矿物的溶解；锶离子浓度主要受控于天青石矿物的溶解。

Corn stalk pretreated by dilute sulfuric acid was hydrolyzed by the dosages of 20 FPIU/g Trichoderma reesei cellulase and 4 IU/g β-glucosidase at the substrate concentration of 100 g/L for 48 h, the concentration of cellobiose and glucose in hydrolysate were 1.12 and 42.68 g/L, respectively, the yield of enzymatic hydrolysis and the ratio of fermentable sugar were 62.85% and 97.44% respectively.

底物质量浓度为100g/L的稀硫酸预处理玉米秸秆，经酶用量为20 FPIU/g的里氏木霉纤维素酶和4IU/g的β-葡萄糖苷酶水解48h，水解糖液中纤维二糖和葡萄糖质量浓度分别为1.12和42.68g/L，纤维素水解得率和可发酵性糖的比例分别为62.85%和97.44%。

It was found that sodium hydroxide concentration of alkalizing tobacco stem,the amount of carbon disulfide,the reaction time of carbon disulfide,and the amount of magnesium chloride had greater impact on the cellulose xanthate property of Cu2+removal.

实验结果表明，烟梗碱化的NaOH浓度、CS2的加入量、CS2的反应时间、MgCl2的浓度等4个因素对纤维素黄原酸酯去除Cu2+的性能影响较大。

The IR spectra of NDA-800 and NDA-90 resins showed that there only small changes of the wavelength and strength of the characteristical adsorption peaks took place and without new peaks appearing after they were loaded with phenol, salicylic acid, p-hydroxybenzoic acid and 2, 6-bihydroxybenzoic acid.

在该研究试验的浓度范围内，苯酚、水杨酸、对羟基苯甲酸和2，6-二羟基苯甲酸等物质在NDA-800和NDA-90超高交联吸附树脂上的吸附符合Langmuir、Frundlich和R-P吸附等温方程，吸附为优惠吸附，吸附量随着吸附质溶液浓度的增加而增大，随着温度的升高而减小。

To examine the microvascular actions of tanshinone IIA researchers applied it topically to the hamsters' cheek pouch or mice cremaster muscles to achieve the final concentration of one μg/ml or five μg/ml. After the application of tanshinone IIA, the experiment was continued for an additional 60-minute period in order to measure arteriolar diameter and peri-arteriolar nitric oxide concentration.

为研究丹参酮ⅡA对微血管的作用，研究者将丹参酮ⅡA应用于金仓鼠颊囊以及小鼠睾提肌使局部血管内药物浓度达到1μg/ml和5μg/ml，实验继续进行60分钟后测量微动脉管径及外周微动脉中一氧化氮浓度。

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