acidizing

Based on the variation modes of operating curves of acid fracturing treatment, and the geological effects of the treatment, 4 appraisal systems have been suggested each of which corresponds to one of the acid fracturing modes, including no fracture have been created (type Ⅰ), fractures have just been created and then stop (type Ⅱ), fracture have been created.

深层碳酸盐岩储层酸压改造的目的就是让酸压裂缝与天然缝洞系统沟通。

In this study, we investigated the assembly of Asia 1 foot-and-mouth disease virus empty capsid particles in insect cells using baculovirus expression system based on this new incurred Asia 1 FMDV, and with the hope to achieve a safe, high potency subunit vaccine based on empty capsid particles for Asia 1 FMDV.

采用了三种不同的策略来研究Asia 1型FMDV空衣壳的组装:一是将P12A和3C基因序列分别插入分泌型杆状病毒表达载体pMel-Bac B中,探讨目的基因的分泌表达;二是将空衣壳组装必需的3C基因和P12A基因插入带双启动子的表达载体pFastBac? Dual中,两种基因分别置于不同的启动子控制之下,同时表达P12A和3C蛋白,在昆虫细胞内裂解组装空衣壳粒子;三是通过耐酸性改造,研究提高空衣壳酸稳定性的条件;当pH值低于7时,FMDV二十面体对称的衣壳结构就会裂解成12S的五聚体,而昆虫细胞培养基的正常pH值在6。

The influence of Ca2+、Mg2+ and NaCl content on pickling and chrome-tanning of pigskin was studied.

研究了水中Ca2+、Mg2+和NaCl的含量对猪皮浸酸铬鞣的影响。

Sodium dodecylsulfate(an anionic surfactant), dodecyl trimethylammonium chloride (a cationic surfactant) and Peregal O(a nonionic surfactant) of various dosages(based on the pickling liquor weight) were added in the pickling liquor respectively.

将十二烷基硫酸酯钠(阴离子型表面活性剂)、十二烷基三甲基氯化铵(阳离子型表面活性剂)和平平加O(非离子型表面活性剂)分别以不同用量添加到浸酸液中,观察浸酸工序完成所需要的时间,测定浸酸废液蛋白质含量和悬浮物含量,并对浸酸皮组织切片进行显微镜观察。

A great quantity of neutral salts, mainly produced during the pickling process in leather-making and difficultly separated from waste liquid, have been found in tannery effluent.

制革厂排放出污水中含有大量的中性盐 ,这些中性盐主要来自制革浸酸工序并且极难与污水分离。

Reservoir Reconstruction by Acidization of Low-permeability Reservoirs of Lower Palaeozoic System in Northern Shaanxi Area

陕北下古生界低渗储层酸压改造技术研究

Application of Cross-linking Acid Fracturing with Proppant Technique in Redevelopment of Dolomite Reservoirs;

交联酸携砂酸压在白云岩储层改造中的应用

Difficulties and countermeasures of sand fracturing in carbonate reservoirs

碳酸盐岩储层加砂压裂改造的难点及对策

Adaptation Revamp of Atmospheric-vacuum Distillation Unit for High-acidity Crude

常减压蒸馏装置加工高酸原油适应性改造

Effect of acid fluid on carbonate reservoir reconstruction

酸性流体对碳酸盐岩储层的改造作用

Reforming low eletric voltage power supply with adjustable voltage-regul ating IC;

用三端可调集成稳压IC改造低压电源

The transformation on sealing components of glass pipeline in import sulphuric acid refine device from abroad and sealing structures of the imported high pressure plunger pump is introduced.

介绍了引进硫酸精制装置中玻璃管路密封件以及高压柱塞泵密封结构的改造。

The Critical Technology Research of the Part Semi-finished Materials Based on the Hydraulic Forging;

锻造机械液压过载保护系统改造研究

Technical Transformation on Imported Extrusion Granulating Mould

长岭闲置进口挤压造粒模板技术改造

Technical Revamp of Sulfuric Acid Plant Based on Cracking Spent Sulfuric Acid for Fushun Petrochemical Company

抚顺石化公司废硫酸裂解制酸装置技术改造

Change of Compound(Mixed) Fertilizer from Rotary Drum Steam Granulation to Ammonia and Acid Granulation Process

转鼓蒸汽造粒改为氨酸法造粒生产复(混)合肥

Production Technology Reformation and Production Method Selection in Nitric Acid

硝酸生产技术改造和生产方法的选择

Production practice of enhancing gold recovery rate from sulphuric acid roasting slag

提高硫酸烧渣金回收率技术改造实践

Reconstructing dust-collector of equipment producing mono-ammonium phosphate by traditional method

传统法磷酸一铵装置收尘装置的改造

Energy-saving technology transformation of propylene glycol ether acetate products

丙二醇甲醚醋酸酯产品节能工艺改造

Reconstruction of Treatment Project of Comprehensive Wastewater from Electroplating and Pickling Processes

电镀酸洗综合废水处理工程改造实践

ON TECHNOLOGICAL REMAKING AND DEVELOPMENT OF HYDRAULIC PRESS DOWN SYSTEM OF 1700 TYPE HOT - ROLLING PLANISHER;

1700热轧平整机液压压下系统的技术改造与开发

Dynamic-static Pressure bearings for cement mill and static Pressure reformation to its oil supplying system

水泥磨动静压轴承及其供油系统的静压改造