泡沫比例混合器在液下喷射灭火系统中的应用

提出了环泵泡沫比例混合器和泡沫压力比例混合器在相应灭火系统中的应用、安装和操作中应注意的问题，对两种泡沫比例混合器组成的系统进行了对比，认为环泵比例混合泡沫灭火系统采用正压进水，可以克服负压进水方式存在的缺陷，比较适合油库火灾的扑救；压力比例混合泡沫灭火系统灵活性、匹配性较差，适用于泡沫混合液流量相对不变的火灾扑救。     

甘蓝型双低隐性核不育杂交种沪油杂1号的选育

沪油杂1号(原编号SH-19)是利用隐性上位互作核雄性不育系20118A育成的甘蓝型双低杂交油菜品种.20118A的育性由2对隐性重叠基因和1对隐性上位基因控制,基因型为aabbRfRf,临保系的基因型为aabbrfrf,恢复系的基因型为AA__或__BB__.沪油杂1号种子含油量42.43%,芥酸含量0.62%,硫甙含量24.23μmol/g.在上海市油菜区域试验中平均产量2 243.3kg/hm2,比双高对照汇油50增产11.9%,比双低对照沪油15增产3.8%;在上海市油菜生产试验中平均产量2 244.0kg/hm2,分别比对照汇油50增产33.6%,比对照沪油15增产15.9%.     

有初始缺陷板件超屈曲强度的半分析法研究

本文应用大挠度理论分析了初始缺陷对板件超屈曲强度的影响,并为板件后屈曲分析提出了一个样条函数半分析计算法.该法对各种载荷及位移边界条件板件均可进行计算,与有限元法等相比较,具有计算量少,精度高等显著特点.数值计算结果为冷弯型钢结构设计提供了较完善的理论依据.     

文件函数FileToStr()和StrToFile()在MIS系统中的应用

本文简要阐述了在可视化开发工具Visual foxpro6．0中，文件函数filetostr()和Strtofile()的功能和在实际当中的应用。通过Strtofile()函数，将编辑框中的字符转换为文本文件，通过filetostr()函数，将已存在的文本文件转换为编辑框的内容，以实现在MIS系统中备注字段内容的导入导出。     

Research on abalone (Haliotis midae L.) cultivation in South Africa

Although abalone fisheries in South Africa have existed since 1949, cultivation started by successful spawning of captured specimens in 1981 to produce spat and juveniles. Twelve abalone farms, with an estimated investment of US$12 million, have since been established on the coast of South Africa, with a projected production of 500–800 tons. While Haliotis midae could reach a maximum size of about 200 mm shell length at an age of over 30 years in the wild, farm production is concentrating on an average size of 100 mm after 5 years. Growth rates of 0.08–4.5% body weight day ^?1 for abalone of 10–17 mm shell length have been found under stimulated farming conditions on formulated diets, while the corresponding feed conversion ratio (FCR) was 0.9–2.4. Growth rate, FCR and protein efficiency ratio decline at water temperatures above 20 °C. Anaesthetics, for example magnesium sulphate, are used to prevent injury during removal from tanks. Prostrate diatoms, such as Cocconeis sublittoralis (Hendey), Amphora proteoides (Hustedt) and Achnanthes brevipes (Agardh) are preferred after the larval stage (5–7 days, depending on temperature) are finished. South Africa abalone growers prefer formulated feeds in pellet form, which is convenience and cost favourable to farm operations and management. Although fish meal has been found to be the most suitable protein source for inclusion in formulated diets, plant proteins such as soy bean meal, cottonseed meal and sunflower meal presented good growth and apparent protein digestibility. The parasite sabellid polychaete, Terebrasabella heterouncinata, recently named by Australian and American researchers, is indigenous to a variety of South African intertidal molluscs and impedes growth by causing irritation beneath the mantle in abalone. Prevention to some degree is possible by high standards of hygiene and husbandry of abalone in the tanks, but new techniques to control large infestations now include ultrasound. In spite of a reputation for toughness, abalone meat frozen immediately after shucking is tender relative to red meat. The success of abalone farming in South Africa has been as a result of a high degree of cooperation between the private sector and government‐backed research institutions, and it is anticipated that this collaboration will continue.     

干法生产UHT豆奶工艺技术研究及应用

以优质大豆为主要原料，经干法生产（大豆筛选、脱皮、高温灭酶、粗磨、超细研磨、浆渣分离）制得豆奶；根据QB／T2132产品分类要求（纯豆乳、调制豆乳、豆乳饮料），研究配方组成（大豆用量、加油量、乳化剂添加量）；采用UHT灭菌、复合塑料膜无菌灌装，常温下保质期达到30～90天.     

湟源县草地资源基本特点及开发利用

湟源县草地面积有 85 1 85 .1 3hm2 ,占全县土地总面积的 5 6.45 % ,草地资源丰富 ,牧草种类较多 ,农业生产秸秆来源广泛 ,但由于利用不当 ,造成了草地严重破坏和秸秆的浪费 ,如何合理利用草地和秸秆资源 ,扼制草地退化 ,是促进该县畜牧业发展的重要因素     

采种大白菜地膜复盖的研究

为了提高大白菜(B. campestris ssp pekinensis.)种子的产量和质量,我们进行了两年地膜覆盖研究。结果表明:无论直播小株、育苗小株、老株那种采种方式,凡使用地膜覆盖的均比不覆盖的产量增加30％左右,质量也明显的提高;聚乙烯、聚氯乙烯都是良好的地而覆盖材料,在大白菜种子生产中可以取得相近似的效果。     

不同方法构建磺胺二甲氧嘧啶免疫抗原的比较研究

为探讨合成磺胺二甲氧嘧啶(SDM)免疫抗原的有效途径,采用重氮偶合法和戊二醛法分别合成SDM免疫抗原,并对其结构特征、光谱特征和SDM结合比进行比较.结果表明,在合成SDM-BSA中采用重氮偶合法比戊二醛法好.     

结晶葡萄糖的生产工艺、用途及其发展前景

介绍了结晶葡萄糖的生产工艺、主要用途及其发展前景．