Abstract:A new method named principal component projection method for multiindices and evaluation was presented in the paper. The new method is a kind of additive weighting methods essentially. However, there is different mathematic and economic meaning between th

Abstract:In this paper, the ratio estimates in cluster sampling with the PPS sampling were compared and the condition that the ratio estimator is superior to PPS estimator was obtained in the paper.

Abstract:采用紫外分光光度法对太湖蓝藻提取液中的胰蛋白酶抑制剂进行了含量测定，测定的线性范围在4～40μg/mL.此法简单方便，精密度和回收率均较理想.

Abstract:The medium of raw starch enzyme was optimized with neural networks and genetic algorithms. A good result was obtained. After optimization, the raw starch enzyme activity was improved obviously.

Abstract:Critical micelle concentration (CMC) was one of the mark of the formation of micelles in the surfactant's aqueous solutions.In this paper, Du Nony method was selected to measure the CMC of Tween80 in aqueous solutions, and the effects of temperature, the

Abstract:The fragrance compounds of Michelia alba were isolated by solid phase microextraction and analyzed with GC/MS. The GC profile showed 114 peaks, within which 75 compounds were determined,which occupied 97.26%.

Abstract:The new problems met the architecture designers using CAD Technology now were analyzed. The whole and the function designs of the architecture data management system (ADM system) and the methods of some technology problems were recommended in the pa

Abstract:This article recites the basic expressive methods of picture visual effect and the action of picture visual effect in CAI courseware.

Abstract:Fermentation is the processes in which microbial population functions. Those processes are supported and maintained by the three kinds of flows: the electron flows which operate along with energy form transformation, the metabolite flows which operate

Abstract:The possible mechanism and process of chlorophyll degradation in green vegetable during the processing and storage were summarized. The factors (chlorophyll derivatives, metal ions and concentration, chlorophyllase, pH value, heated temperature and time,

Abstract:High quality data about protein structures and their gene sequences are essential to the understanding the relation between protein folding and protein coding sequences. By query about Escherichia coli proteins in SWISS PROT,a cross reference table

Abstract:脂肪酸和脂肪酸酯是呈“酸性”的，它是使发酵法生产丙三醇的NaOH滴定值超标的一类杂质.为分析其产生来源及进一步提出控制策略，确定了显“酸性”的关键脂肪酸酯.GC－MS分析发现，发酵法生产工业级丙三醇中脂肪酸及脂肪酸酯为乙酸、丙酸、丁酸甘油酯及甘油单乙酸酯等，其中甘油单乙酸酯含量最高.HPLC法测定了不同厂家发酵生产的工业级丙三醇中甘油单乙酸酯的含量，一般在0.5～3.0g/100g丙三醇.它对工业级丙三醇的脂肪酸滴定值影响最大，是发酵法生产工业级丙三醇显“酸性”的关键物质.

Abstract:通过对一株粪产碱杆菌WX-C12(Alcaligenes

Abstract:This paper expounded about how to use the separation technology of nanofiltration, chromatography,and yeast fermentation to produce high purity isomaltooligosacchride IMO 90.

Abstract:选择122树脂用于丙酮酸发酵液的脱色，在发酵液丙酮酸质量浓度为60g/L、pH3.0、脱色空间流速为1.8mL/(mL*h)的条件下可取得较好的脱色效果，丙酮酸损失率低于6%.从8种碱性阴离子交换树脂中筛选出330弱碱性阴离子树脂(氯型)，用于从发酵液中提取丙酮酸.考察了不同操作条件对固定床离子交换效果的影响，上柱料液pH的变化对流出曲线的形状影响不大.当上柱料液的pH和丙酮酸质量浓度分别控制在4.0和40g/L时，可以获得较高的有效体积交换容量(分别为0.534mol/L树脂和0.530mol/L树脂).实验范围内体积流量对交换过程的影响不大，在较低的离子交换空间(0.44mL/(mL*h))下有效体积交换容量较高(0.604mol/L树脂).考察了固定床洗脱工艺条件对洗脱效果的影响.当洗脱剂盐酸的浓度为2mol/L、洗脱空间流速控制在0.44mL/(mL*h)左右时洗脱效果较好.采用较佳的工艺条件进行固定床单柱操作，实验得到离子交换单元的丙酮酸收率为97.0%.

Abstract:主要研究了机械破壁、pH值以及麦芽根核酸酶的作用对啤酒酵母自溶过程的影响.均质破壁能显著提高自溶速率及酵母抽提物中蛋白质和核苷酸的含量，麦芽根核酸酶的加入有效地提高了酵母抽提物中5′-核苷酸含量，而提高自溶时的pH值不能显著地提高酵母抽提物中5′-核苷酸的含量.因此，有效地提高酵母抽提物中5′-核苷酸含量的方法是啤酒废酵母经0.5%NaHCO3脱苦后，加2倍体积无菌水和5%NaCl，再加质量分数为1%的核酸酶，搅拌均匀，在40MPa下均质3次，然后升温至55℃，自溶30h，得到的酵母抽提物中5′-GMP含量高达6.37mg/g.

Abstract:对在不同破碎温度下所得番茄浆的动态流变性质以及果胶物质相对分子质量的分布和大小进行了研究.结果表明随着破碎温度的增加，番茄浆中果胶物质的平均相对分子质量增加.但当破碎温度为90℃时，果胶物质的平均相对分子质量却有所下降.在80℃和85℃破碎时，番茄浆具有相当大的贮能模量，而在75℃和90℃破碎时，贮能模量值较小.贮能模量值对振荡频率具有一定的依赖性，故番茄浆表现出弱凝胶特性.贮能模量G′和损耗模量G″交汇点的位置随着破碎温度的升高向低频区移动.这说明破碎温度越高，大分子物质被保留得愈多，体系呈较强的弹性；破碎温度越低，体系中大分子物质被保留得越少，体系呈较强的粘性.

Abstract:Hazard analysis about gong wan processing was carried out using the principle and method of HACCP. Mellow and cooking are critical control points according to the study and analysis of processing site and product quality. The sanitation and quality of go

Abstract:In this article, compared with potato starch and corn starch, rheological properties of retrogradation starch gel from the bulbs of Lilium brownii var.colchesteri and the effect of addition of sucrose on its rheological characteristics were studied by

Abstract:探讨了以脱脂奶粉为原料勾兑奶酒的工艺条件，主要研究了牛奶蛋白在乙醇存在下影响其稳定性的一个重要因素——pH值.实验表明，在以脱脂奶粉为原料勾兑奶酒时，酒精应该先进行适量的稀释再加入到复配奶中；随着复配奶pH值的升高，其牛奶蛋白的乙醇稳定性也随之升高.复配奶的pH值决定着勾兑奶酒的pH值，其最适pH值为6.5～7.3，但是酒精的pH对于勾兑奶酒的pH并没有决定性的影响.实验还研究了勾兑奶酒在储存过程中其体系的pH值的变化.

Abstract:姬松茸子实体经热水提取，乙醇沉淀，DEAE－纤维素和SephadexG-200柱分离纯化，得ABP-Ⅱ-α和ABP-Ⅱ-β两种纯多糖。研究了两种多糖对体外人白血病细胞的抗癌作用.结果表明,两种多糖对人白血病细胞均有不同程度的抑制作用，并与作用时间和作用剂量呈正相关.

Abstract:For the system of micellar solubilizing, the release of the solubilized material from the aqueous solution to the air was one of the most important things. In this paper, HSGC was selected to investigate the release of mint oil. The relation of mint oil's

Abstract:Several ways which were used in improving stability of rice wine were studied. Microfiltration and freezing technology can improve the stability, but they had different effect. In order to improve the stability of rice wine, the microfiltration with free

Abstract:采用二步反应法，合成了立体等规性聚甲基丙烯酸大分子单体.用核磁共振表征了它的同规度和末端官能团(C=C)的含量.研究了分散共聚反应体系中大分子单体浓度对纳米微球直径和形态的影响.结果表明，在乙醇/水的混合溶液中使用合适的大分子单体浓度可得到直径单分散纳米微球,同时大分子单体浓度和相对分子质量将明显影响纳米微球的形成.

Abstract:Water base ink is one of the environment protection inks. When it is used, the VOC will be cut down. It makes our environment safe and hygienic. The Water base ink is made of water type high polymer emulsion, organic developer, surfactant and addition

Abstract:Main functions of mechanism simulation (Simply Motion module) in Solid Edge V8 and its application in GYJ20 28 dryer were introduced. The key skills and methods involved in defining motion joints, simulation type, driving function, motion simulation, dyn

Abstract:In this article, the decision theory of gray incidence was introduced. One example of using this theory to judge the performance of shuttleless weaving machine has also been given. The result indicated that the air jet loom will be the best choice for ma

Abstract:By analysing a series of data, the effects of spinning process on fuzzy yarns were studied in the paper. Some measures for reduction of fuzzy yarns in production were obtained.