Analytical study of a solution-processed diode based on ZnO nanoparticles using multi-walled carbon nanotubes as Schottky contact

Journal of Materials Science: Materials in Electronics - The search for good electrodes processed by solution has interested several niches to produce printed solar cells, lighting emitting diodes,...     

筛网LAD通道液氮动态出流性能研究

为了研究筛网LAD通道结构在低温推进剂中的气液分离及输送性能,设计、加工了覆盖筛网的圆管通道并通过可视化实验获得了液氮中LAD通道有效工作时的极限排放高度,并分析了流动损失的组成.结果 表明,325×2300 Dutch Twill型编织筛网在自增压过程中发生泡破时的液氮极限排放高度为280 mm,所产生的水力静压损失...     

盐矿卤水中钙镁离子的深度净化研究

本文将化学净化与吸附净化相结合,考察其对卤水中钙镁离子的深度净化效果.实验结果表明,在一定的pH值下,TD-11吸附剂能吸附去除卤水中的钙镁杂质离子,吸附剂对钙镁离子的吸附能力与活性基团类型有关,Na型基团的吸附能力较强,而H型基团吸附能力则较弱.吸附净化作为化学净化的后道工序,能有效脱除卤水中残存的钙镁离子,有望彻底解决钙镁杂质离子对真空制盐及两碱生产过程的不利影响.     

胰酶和2709混合酶助浸水的研究

将胰酶和2 70 9混合酶应用于生皮浸水,研究其在相同温度、不同时间、不同pH值条件下的应用效果。测定了浸水后皮的含水量、浸水液中蛋白质含量和羟脯氨酸含量,并对浸水皮进行了感观评定。结果表明:胰酶和2 70 9混合酶作为黄牛盐湿皮浸水助剂,不仅可以缩短浸水时间,去除绝大部分污物和部分纤维间质、少量油脂,还可以减轻颈部皱纹,提高得革率,使浸水皮更柔软、丰满。通过探索性试验,确定了胰酶和2 70 9蛋白酶作为黄牛盐湿皮浸水助剂的使用条件为:常温,液比为3 ,pH值为9.5 ,胰酶和2 70 9蛋白酶各占5 0 % (以酶的使用量为0 .0 1 6%皮质量计) ,浸水时间为9h。     

谷氨酰胺转胺酶在搅拌型酸奶加工中的应用

主要研究了谷氨酰胺转胺酶在搅拌型酸奶加工中的应用,研究结果表明:该酶的最适添加顺序为与发酵剂同时加入到灭菌的乳中;最适添加种类为TG-K;最适添加量为3×10-4g/mL;而且还研究了在贮藏期间,加酶酸奶的质构变化情况。     

Wheat endosperm hardness. Part I. Relationships to colour of kernel cross-section

The aim of this study was to determine to what extent the measurement of wheat endosperm colour can be used to predict its hardness. The results indicate that there is no general (for all varieties) relationship between the colour of wheat endosperm and its hardness. Nevertheless, endosperm hardness tends to increase along with increasing values of b*, H and S attributes and decreasing values of a*. More promising results were obtained when the colour–hardness relationship was examined within a variety. In all cases, the results were statistically significant, but the endosperm hardnesses of Zyta, Rysa, Banti, Sakwa, and Mewa varieties were found to be more closely linked with the colour of the central part of the endosperm (r ranging from 0.53 to 0.76), whereas that of durum and Elena wheats were found to be more closely linked with the colour of the whole endosperm (r=0.70 and 0.57 respectively). It was observed that the varieties examined can be divided into three groups differing in the range of changes in hardness as a function of the b* attribute of endosperm colour. For group I (durum and Zyta), the rate of hardness increase was higher than that of group II (Rysa, Banti and Sakwa). The third group (Elena and Mewa) was characterised by the highest slope of hardness versus b*; however, it was well differentiated from group I by its low values for yellow.     

我国木工机械产品进出口贸易简析

近年来．我国木工机械产品进出口贸易快速增长．但贸易逆差进一步扩大。2003年与2004年．进出口总额分别为18．38亿美元和26．78亿美元。据有关部门分类统计木工手工工具类进口：2003年4080万美元：2004年5829万美元；出口：2003年2.4亿美元．2004年3．63亿美元。木工机械刃具及刀片类进口：2003年350万美元．2004年454万美元．出口：2003年3150万美元．2004年4284万美元。木工机械及人造板设备类进口：2003年12．32亿美元．2004年18．26亿美元：出口：2003年2．9亿美元，2004在38347美元。