晚霜冻害葡萄园产量恢复的途径

1988年4月下旬,一股来自北极的冷空气团侵入摩尔达维亚境内,致使盆地土表及与其相连的坡地温度下降到-4…-6℃,葡萄主干叶幕高度上的温度下降到-1.5℃,同时还有雨加雪。此时葡萄已开始发芽。一般情况下,幼叶在-0.2,-0.3℃以下有冻害,而已萌     

注凝析油开采稠油的地质工艺

在西西伯利亚俄罗斯油田开展了注凝析油开发稠油的研究，现场实验结果表明，注入25%的凝析油，可使其混合液粘度达到原高粘油粘度的1/60，以俄罗斯油田为例，探讨了注凝析油矿场试验的可行性，预测了凝析油的用量和可能产出的油量，并对原油外输提出了一系列更换工艺设备的要求。     

让数据中心无断电之忧

企业信息化建设规模的日益扩大和新业务系统的不断加入,使得企业数据中心的规模不断扩大,同时也使得数据中心在企业中的地位日渐重要。因此,数据中心一丝一毫的闪失都将给企业带来巨大的损失。电源作为数据中心的基础设施之一,更是容不得半点疏忽。     

激励创新支撑发展引领未来

我们在深入学习《中国共产党第十六届中央委员会第五次全体会议公报》和《中共中央关于制定国民经济和社会发展第十一个五年规划的建议》，展望未来五年美好前景的日子里，迈入了具有重要历史意义的新一年——我国第十一个五年计划的第一年，再过几天传统春节又将会给带来欢庆丰收和亲人团聚的无比欢乐，我们杂志社全体同仁祝大家新年好，春节快乐。“在全面建设小康社会的进程中，‘十一五’具有承前启后的重要历史地位”。《现代制造工程》杂志社作为我国制造业的一员，学习《中共中央第五次全体会议公报》和《中共中央关于制定国民经济和…     

扫出真我风采

几年前,扫描仪在很多用户的眼里还是神秘的事物,特别是它能将相片等纸介质图像转化成数字图像,确实让许多人着迷。然而,它高昂的价格却让人望而却步。现如今,买台电脑只要额外掏少许钱就可以圆了用户的“扫描”梦。家庭的扫描梦想可以说是轻易实现了,可对于一些行业或企业用户来说,他们的扫描梦又该如何实现呢?     

强度级别X70大直径钢管用厚板钢材的生产

亚速钢公司生产名牌品种和尺寸品种众多的K52到K60强度级别大直径天然气输送管用厚板钢材，供给乌克兰和俄罗斯企业一哈尔崔兹斯克钢管厂、维克苏钢铁厂、伏尔加钢管厂和其它厂，而同时强度级别从X42到X70，主要提供给国外远方的用户一印度、墨西哥、土耳其、东南亚。     

鋁电解工艺的现状

历史資料在第二次世界大战之前,彼施涅公司的鋁厂装备的是3～5万安培的預焙阳极电解槽和2～3万安培的側部导电自焙阳极电解槽。电解槽的技术指标列于表1。     

New insights into the morphology of Trypanosoma cruzi reservosome

Reservosomes are late endosomes present only in members of the Schizotrypanum subgenus of the Trypanosoma genus and are defined as the site of storage of endocytosed macromolecules and lysosomal enzymes. They have been extensively described in Trypanosoma cruzi epimastigote: are bounded by a membrane unit, present an electron-dense protein matrix with electron-lucent lipid inclusions, being devoid of inner membranes. Here we performed a detailed ultrastructural analysis of these organelles using a variety of electron microscopy techniques, including ultrathin sectioning, uranyl acetate stained preparations, and freeze fracture, either in intact epimastigotes or in isolated reservosomes. New informations were obtained. First, both isolated and in situ reservosomes presented small profiles of inner membranes that are morphologically similar to the membrane surrounding the organelle. In uranyl acetate stained preparations, internal membrane profiles turned out to be longer than they appeared in ultrathin section images and traversed the organelle diameter. Internal vesicles were also found. Second, endocytosed cargo are not associated with internal vesicles and reach reservosomes on board of vesicles that fuse with the boundary membrane, delivering cargo directly into reservosome lumen. Third, electron-lucent bodies with saturated lipid core surrounded by a membrane monolayer and with unusual rectangular shape were also observed. Fourth, it was possible to demonstrate the presence of intramembranous particles on the E face of both internal vesicles and the surrounding membrane. Collectively, these results indicate that reservosomes have a complex internal structure, which may correlate with their multiple functions.     

DDR（2＋1）=DDR3？

相对于其他配件而言,内存的发展始终保持着非常平稳的态势,即使是初级电脑用户也知道,内存的升级换代基本上就是简单的加法关系,DDR2内存的下一代继任者就是DDR3,之后则是DDR4……实际上,DDR3并不只是DDR（2＋1）的加法运算,两者在很多地方是有差别的。