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An efficient and facile method for the synthesis of N-substituted pyrroles in moderate to good yields by the Paal–Knorr......
Comparison between the quality and function of sperm after semen processing with two different metho
Aim: To compare the recovery rate of morphologically normal and chromatin condensed spermatozoa from native se-men samp......
The modelling and experimental investigation of a thermally coupled humidification-dehumidification desalination process......
In the condensation of arylaldehydes with arylethylidenemalononitriles, it was found that, besides the normal product d......
Synthesis and Crystal Structure of 2-Methoxy-benzoic Acid 2-Oxo-3-(2,4,6-trimethyl-phenyl)-1-oxa-spi
The new title compound 2-methoxy-benzoic acid 2-oxo-3-(2,4,6-trimethyl-phenyl)-1-oxa-spiro[4.4]non-3-en-4-yl ester(3,C25......
针对空冷凝汽器上的逆流凝结管,用扩散层模型模拟管内空气–蒸汽的组分输运,用多相流理论中的VOF方法建立管内两相流的控制方程,分......
Analysis on Concentration and Source Rate of Precursor Vapors Participating in Particle Formation an
本文通过对荣华二采区10...
Analysis on Concentration and Source Rate of Precursor Vapors Participating in Particle Formation an
Concentration and source rate of precursor vapors participating in particle formation and subsequent growth were investi......
结合浙江浙能兰溪发电有限责任公司4台660 MW超临界机组凝结水泵变频改造,介绍变频调速实现水泵电机节能的工作原理,分析变频节能......
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介绍了传统喷水室用于去除微细粉尘的不足之处以及流体动力式超声波凝聚喷水室治理"煤灰纱"现象的原理.这种新方法能够充分利用原......
实验研究了管端斜口对竖直管内不互溶蒸汽冷凝液泛气速的影响,并给出了经验关系式.指出在管端加斜口是解决实际工业中竖直管内液泛......
探讨了蒸汽管道的敷设和补偿,蒸汽系统的排气和疏水,凝结水的回收....
报道了一种利用空气作为氧化剂由邻苯二胺和醛为原料合成苯并咪唑的新方法．该方法以DMF为溶剂，等物质的量的邻苯二胺和醛反应一锅合......
通过沉淀、老化、过滤、洗涤、干燥、浸渍和焙烧等过程，从TiCl4和H2SO4制备了SO4^2-／TiO2固体超强酸；用Hammett指示剂法和吡啶吸附的F......
对较大油雾颗粒流经缝隙后的粒径变化及其分布进行了分析.结果表明：缝隙长度为20 mm时,流经缝隙的较大油雾颗粒都发生了凝聚,且油雾......
以对氯氯苄和丙二酸二乙酯为原料,经缩合、碱性水解、脱羧、酰氯化、Friedel-Crafts酰基化等反应得到6-氯-1-茚酮,总收率62%,纯度9......
以乙烯基乙醚为起始原料合成得到制备菁类功能染料的中间体3-苯胺基丙烯醛缩苯胺盐酸盐，产品收率高达85％，经IR及。HNMR表征表明结构正......
在稠油热采中,不但稠油物理性质发生变化,而且会发生水热裂解化学反应.为使裂解反应更有利于降低稠油粘度,达到提高稠油开采率的目......
牙哈凝析气田采用"循环注气、保压开采"的开发方式4年多以来,已从油藏工程和数值模拟两方面证实了已有2口注气井组发生气窜,但是注......
目前有部分轮胎半钢液压热板式硫化机在热工管路设计时,上下热板和模套的蒸汽管道冷凝水排放采用活塞切断阀方式(也称A/P阀,Air Pi......
介绍了“缩合-催化氧化-生化处理”工艺处理酚醛树脂生产中产生的酚类废水的实验研究和工程实例.实验数据表明,高浓度的酚醛树脂生......
Synthesis of Novel 1-Arylsulfonyl-4-（1＇-N-2＇, 3＇, 4＇, 6＇-tetra-O-acetyl-β-D-glucopyranosyl）thiosemic
...
简要介绍了瑞金医院蒸汽凝结水回收、处理系统、锅炉排污系统、集中空调冷凝热回收的设计，重点是回收设备的综合技术经济比较，回收方......
A fiber optic sensor is developed in order to measure film thickness along a curved surface. The technique is non-invasi......
用改进的Nusselt—Rohsenow方法分析了水平螺旋管外的层流膜状冷凝换热。考虑了粘性和重力的影响以及离心力对液膜流动和换热的影......
Based on the Veneziano ghost theory of QCD, we estimate the cosmological constant Λ, which is related to the vacuum ene......
Numerical simulation on R245fa condensation inside an inner diameter of 8 mm horizontal tube is researched in this paper......
