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The results show that the optimum mole percent of Al3+ to Yb3+ is 9—11 for high concentration of ytterbium-doped silica-based fiber at which low concentration quenching probability, high absorption coefficient and proper numerical aperture can be obtained.

揭示出在高掺Yb3+的石英基光纤中，共掺Al3+的摩尔浓度为Yb3+摩尔浓度的9—11倍时既可以减小Yb3+的浓度猝灭概率，又可以获得高吸收系数，同时还可更好地满足数值孔径的要求的结论。

The best concentration of scavenging was 0.2mg/ml. In the lipid self-oxidation experiment, the product showed a strong inhibition of oxidant at low concentration (.2%). Furthermore, VC can enhance the antioxidant ability of the pigment.

Zmg/m1。在猪油自氧化实验中，在低浓度范围(。2%)南瓜色素同样表现出了良好的抑制作用，而且在不超过VC浓度的时候与VC具有良好的协同抗氧化作用。

Through doing thermodynamic simulation on the relationships among equilibrium concentration of gangue heap exhausted gas to temperature,pressure ratio and proportion of vapor in air and gas concentration of self-combustion gangue heap,the thermodynamic condition of spontaneous gangue heap to explode was got.

通过对自燃煤矸石山内部烟气的平衡浓度与温度、压力比、水-空比之间关系的热力学模拟，得到了自燃煤矸石山发生爆炸的热力学条件。当α=100，p/pθ=100，T=800~1 200 K时，煤矸石燃烧烟气中CO，CO2，H2，CH4和水蒸气的平衡浓度分别为：0.002~0.422，0.034~0.170，0.049~0.126，0.005~0.355和0.004~0.904，CO，H2，CH4爆炸性气体可发生化学爆炸。

This experiment that 75 mg / L concentration of the most appropriate for future experiments in the screening of the large concentration of rye grass seed.

所以。本实验的认为75mg/L的浓度最适宜作为今后实验中筛选黑麦草种子大的浓度。

Methods Explore the optimal concentration of phurbol-12-myristate-acetate and calcium ionophore (A23817) inducing time, and optimal concentration of biotinyl sheep anti mouce IgG (bio-SAM-IgG) and horse radish peroxidasestreptavidin. The CD4(superscript +) cell enriched from peripheral blood mononuclear cells using solid phase anti-CDs monoclonal antibodies were induced by PMA and A23817 under influence of monensin and harvested in vary hours.

从健康人外周血单个核细胞中富集CD4细胞，加入莫能霉素，用不同浓度的佛波醇酯和钙离子载体(A23817)诱导CD4细胞不同时间，比较其胞内表达白细胞介素－2(IL-2)/白细胞介素－4(IL-4)的细胞百分率，确定最适诱生条件；用不同稀释度的IL-2McAb、IL-4McAb、不同浓度的生物素化羊抗鼠IgG(bio-SAM IgG)和辣根过氧化物酶标记的链霉亲和素作棋盘配比试验，确认McAb、bio-SAM IgG和HRP-SA的最适浓度，根据上述结果建立了检测细胞内细胞因子的BSA-ICC法。

Tea which composed of fructus jujubea, black bean and Jew's ear. The antioxidative study showed dose dependence of C.Q. tea concentration with scavenging effect of 2, 2-diphenyl-1-picrylhydrazyl free radicals and the protective effect of liposomes from ferric chloride. At the concentration of 78 μg/mL, C.Q. tea acted similar scavenging effect as 0.1 μg/mL Vitamin C. The DPPH scavenging activity of C.Q.

在抗氧化实验方面，釆坤茶清除取2，2-diphenyl-1-Picrylhydrazyl自由基的能力，与保护御脂粒不被三氯化铁氧化的能力随采坤茶浓度的上升而增加，在浓度为78 μg/mL时，清除DPPH的能力可达到与0.1 μg/mL的Vitamin C相近，且采坤茶的清除DPPH能力比红枣、黑大豆或黑木耳其中任一种药物单独使用时都高。

The titrant is a mixture of EDTA and sodium fluoride, both mercury film electrode and fluorinion selective electrode are inserted in the titration solution. In a process of titration, both the added volume of titrant and the concentration of mercury ion at each titration point can be obtained simultaneously from the potentials of two electrodes, and then the concentration of each component in the alloy can be obtained from the titration curves by multivariate calibration.

用ED-TA与氟化钠的混合溶液作为滴定剂，被滴定液中同时插入了汞膜电极和氟离子选择电极，在滴定过程中的任一滴定点，溶液中汞离子的浓度和滴定剂的加入体积可由两个电极的电位测定值同时获得，从而可应用多元校正法由相应的滴定曲线求得混合金属中每一种组分的含量。

According to the observation of the number concentration spectrum and the mass concentration of atmospheric aerosol, TSP and its particle size distribution,micrometeorology,and the solar spectroscopic radiation,even the neutron activation treatment of sand dust samples in Helan Mountainous area, the formation law of sandstrom, dust and sand blowing weather and the characteristics of climatic variation in this area and the influence of Helan Mountain are counted and analysed.

利用贺兰山地区沙尘暴历史资料和综合观测资料，对大气背景、浮尘、扬沙和沙尘暴发生期间的大气气溶胶数浓度谱、质量谱、大气总悬浮颗粒及粒径分布、微气象、分光日射观测以及沙尘样品进行中子活化处理，分析了该地区浮尘、扬沙和沙尘暴形成规律，气候变化特征和贺兰山的影响。

By chicken embryo, minimum concentration of medicine of directly inactivated test、 treatment test and preventive test is 7.5mg/ml、 62.5mg/mland 31.25mg/ml;By CEF, minimum concentration of resiting NDVF_(48)E_8 and moderate virulence strain is 10mg/ml、 50mg/ml and 25mg/ml. However,the result of complex prescriptionpreventing and curing NDVF48Ej$ is not ideal.

在鸡胚上抗病毒试验中，对三株病毒起直接灭活、治疗和预防作用的最低药物浓度分别为7.5mg/ml、62.5mg/ml和31.25mg/ml；在鸡胚成纤维细胞上抗病毒试验中，对强强毒株和中等毒力株起直接灭活、治疗和预防作用不引起细胞病变的最低药物浓度分别为10mg/ml、50mg/ml和25mg/ml。

Japonicus.Nerve extraction substance of sea star and dithiothreitol has been reported to be effectively to induce oocyte maturation in sea cucumbers. In this study we tested their effects on oocyte maturation induction in sea cucumber A. japonicus. The results are as follows, oocyte of A. japonicus does not get mature spontaneously. Neither NES alone nor NES with follicle suspension can induce oocyte maturation. While DTT can prominently increase the percentages of germinal vesicle break down. When the concentration of DTT is between10-1 mol/L and 10-3 mol/L, the effect of maturation induction is more sufficient. When the concentration is about 10-2 mol/L, the percentage of GVBD can reach up to more than 90%.

分别利用在海参中有诱导作用的海星神经提取液和二硫苏糖醇对从成熟卵巢解剖出的刺参卵母细胞进行诱导成熟试验，结果显示，刺参的卵母细胞在海水中不会发生自发成熟，海星神经提取液以及神经提取液加滤泡悬浮液对卵母细胞没有诱导成熟的作用，而二硫苏糖醇处理可以诱导卵母细胞生发泡破裂，当DTT溶液的浓度处于10-1 mol/L到10-3 mol/L之间时，对刺参卵母细胞的促熟作用较为明显，在10-2 mol/L左右时，卵母细胞的诱导成熟率可以达到90%以上。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！