The activity of cell adsorbed on the surface containing calcium was higher than that containing phosphorus . this is possible because the surface containing calcium with positive charge was more beneficial to the adsorption of bovine albumin serum and the ligant proteins of cell onto the s urfaces 在含钙的钛表面，蛋白质和细胞更容易吸附，并且吸附的细胞有更高活性，这可能是含钙表面的正电荷有利于血清蛋白的吸附和细胞的配体蛋白吸附。
The research is being dedicated to developing for that new cephalosporin drugs with high antibacterial activities against gram - positive ( g ( superscript + ) ) , especially against methicillin - resistant staphylococcus aureus ( mrsa ) , and prodrugs with improving pharmaceutical properties 目前头孢菌素类药物的研究热点在于寻找对耐药的革兰氏阳性致病菌敏感，尤其是对耐甲氧西林金葡萄球菌( mrsa )敏感的头孢烯酸类化合物及对高活性化合物进行结构修饰，改善其药学性质。
Catalyst for ethanol synthesis . the results show that the reactive metals rh and mn are fixed on the catalyst surface by the interaction with si - oh , which can enhance the stability of highly dispersed metals . rh and mn interact with each other to form the acitve site with high ethanol synthesis activity . the surface si - oh was found to be of significance on the preparation of catalyst with high catalytic activity 的性质，结果表明，活性金属铑及锰经浸渍法担载于载体上后即与表面羟基作用使金属固定在氧化硅的表面上，保证了高度分散活性金属的稳定性高度分散中的铑锰相互结合，构成了乙醇合成中的高活性位研究发现表面硅羟基在催化剂制备过程中起着重要作用。
. from the direct mutant of spirulina platensis ( sp - d ) , we got high purity and activity phycobiliprotein which could grow crystals . the algae fluorescent probe prepared by coupling the above polyclonal antibody to phycobilipotein not only keeps the property of stronger anti - fluorescence quenching but also has the lower fluorescent background when it was used for labeling stoma cells of pea tendril 以原核表达的peac1为抗原制备了免疫活性较好的抗豌豆肌动蛋白的多克隆抗体，从螺旋藻中纯化了高纯度、高活性、能结晶的藻胆蛋白，将两者偶联制备的藻荧光探针，不仅保持了藻胆蛋白很强的抗荧光淬灭能力，而且用于豌豆卷须气孔细胞荧光标记时有更低的荧光背景。
The influence of nano - al2o3 on the sintering and the properties of the si3n4 ceramics was researched in this paper . the samples with different amount of nano - al2o3 were obtained by using pressureless sintering at 1600 , 1650 , 1700 in the nitrogen atmosphere . the microstructure and the composition of the ceramics were determined by the means of x - ray , sem , micro - hardness meter etc . it is show that the sisty ceramics can be densified at 1650c to % percent of the theory density through the addition of nano - al2o3 ( the value could be 90 percent by other technique ) . the crystalline growth of the cylindrical - si3n4 and the ratio of its longitude to its diameter are increased with the addition of nano - al2o3 . a uniform microstructure and an fined crystal as well as more sialon phases can be obtained in the si3n4 ceramics through the addition of that 实验结果表明：在碳管炉中、氮气保护下进行烧结，添加剂为纳米al _ 2o _ 3粉末时，由于纳米粉末的高活性、高烧结驱动力，在1650就可使si _ 3n _ 4完全地烧结，并使其致密度可达理论密度的96以上(比其它工艺高6左右) ；同时，纳米al _ 2o _ 3地加入大大促进了长柱状? si _ 3n _ 4的生长和发育及柱状晶长径比的提高，使微观结构均匀、细化，形成了更多力学性能优异的固体? sialon相，减少了不利于陶瓷材料性能的晶间玻璃相，净化了晶界。
Effect of medium components on enzyme production and characterization of anaerobic fungal crude enzymes were also investigated . this thesis was described in the following three sections . in the first section , twelve anaerobic fungal strains isolated from rumen and faeces of ruminants were screened for xylanase and cmcase production 本研究从黑白花种公牛、水牛、山羊粪样及山羊瘤胃内容物中分离到12株厌氧真菌，并对其进行了产高活性羧甲基纤维素酶和木聚糖酶菌株的筛选，同时还就培养基主要组分对厌氧真菌产酶的影响和厌氧真菌的粗酶性质进行了研究。
It can get the best effection when carbon fibre content at 0 . 2 % and sulfate sodium content at 2 % . at this circumstance it can improve the utilization of pam by 4 - 7 % than that use carbon fibre only at different discharge current . sulfate calcium has some bad effects to the performance of the anode when it was used as pam additive singly 碳纤维和硫酸钠作为正极活性物质的复合添加剂比单独添加碳纤维的效果更好，碳纤维的含量为0 . 2而硫酸钠的含量在2左右的时候效果最佳，这种情况下在各种不同放电电流下能提正极高活性物质利用率4 7 。
The cultural conditions such as temperature , fermentation period and the compound of medium are studied . the result of test show that suitable factors for both bacterium to grow and active substance to produce are 28 , 200rpm and 72 hours . the bacterium is gotten through centrifuge with 8000rpm for 20min . then the bacteria is diluted and colophony named s - 8 is put into and used to absorbed active substance for 4 hours 对该菌株发酵条件的研究表明：该菌株用马铃薯葡萄糖液体培养基发酵培养， 28 ， 200rpm摇瓶中振荡培养72h可获得高活性的发酵产物，用苏云金芽孢杆菌hd - 1做指示菌，将发酵液稀释40倍生测仍可形成明显的抑菌圈。
The main research projects have the synthesizing development and deep processing technology of bitter buckwheat 、 the producing technology of the low calories oils by bio - technology 、 the development and application technology of fruit - vegetable dietetic fiber 、 the comprehensive utilization technology of the sweet potato and the soybean 、 the development and producing technology of food additive , etc 主要研究项目有：苦荞麦的综合开发及深加工技术、生物法低热量油脂生产技术、天然高活性果蔬膳食纤维开发及应用、红薯全价产业化开发、大豆综合开发技术、食品添加剂开发与生产技术等。
The influence of preparing conditions on aluminum titanate composing was inquired . by analyzing element content of alumina and titania source , arranging a stoichiometric dosage , and keeping the chemical homogeneity from sol to mixed ti - al oxide precursor , a high activity powder was prepared . after calcining the precursor powder at 1250 for 2h , aluminum titanate phase is formed 本试验通过准确测定起始物的ti 、 al含量，严格化学配比，采取适当措施将微尺度上的组成均匀性从溶胶一直保持到混合铝钛氧化物前驱体的生成，使该粉体具有高活性，将其在1250煅烧2h ，已合成出以钛酸铝为主晶相的产物，比文献报道的钛酸铝相的最低生成温度降低了50 。
