查询词典 salt water

Key words: natural polymer; multifunction water treatment reagent; isoquinoline quaternary ammonium salt; relative viscosity.

关键词］天然高分子；多功能水处理剂；异喹啉季铵盐；相对粘度

Firstly, polyacrylamide with 26 million molecular weight was compounded in lab through establishing optimum compounding initiator proportionality of 1:1. 3 and mass concentration of 170 mgL^(-1), temperature of 10 ℃, acrylamide mass percentage of 25%, electrical conductivity of 3.6 μSm^(-1) and pH value of 6.57. The salt-resistance, thermal endurance and shear-resistance of polyacrylamide could be enhanced b introducing sulfonic acid group or styrene sulfonate group or drawing the two groups above at the same time. Secondly, chelator HEDP, bactericide isoquinoline ketone and oxygen scavenger thiourea were optimized to improve the compatibility of polyacrylamide and formation water.

在由室内试验确定了复合引发剂最佳比值1：1.3和质量浓度170 mgL^(-1)、合成最佳温度10℃、丙烯酰胺单体质量分数25%、电导率3.6μSm^(-1)和pH值6.57后，合成出相对分子质量高于2.6×10^7的聚丙烯酰胺，同时通过丙烯酰胺单体复配引入磺酸基团、苯乙烯磺酸基团或同时引入此两种基团，提高了聚合物的抗盐、抗温、抗剪切性能；后针对聚丙烯酰胺与地层水配伍性差的问题，优选出HEDP螯合剂、异噻唑烷酮杀菌剂和除氧剂硫脲，对聚合物稳定效果明显。

In order to investigate the effects of water content, curing time, cement content, salt content, organic content on the strength behavior of the cemented clays, a series of physical tests and unconfined compressive tests were performed on cemented clays which composed of reconstituted Lianyungang clays or the Yancheng lagoonal soft clays mixed with powder cement or slurry cement The quantitative methods of strength prediction are proposed for assessing the unconfined compressive strength of cemented clays.

本文通过对已有国内外水泥土研究的分析，针对连云港地区高含水量、高含盐量海相软土及盐城地区高有机质含量泻湖相软土的特点，进行了大量水泥土室内试验，提出了含水量、龄期、水泥用量、含盐量和有机质含量对水泥土强度影响的定量分析公式。

In tide of coastal waters bare and respect of laky eutrophication prevention and cure, obtain bare of the East China Sea material of whole process of tide happening, succession, confirm crucial physics process forms primary value in bare tide, consider to make clear, the Yangtse River pours fresh water or composition of salt of nutrition of area of tall hair of tide of bare of the East China Sea reachs content to be planted to bare tide choose He Chichao to form have conclusive effect.

在近海赤潮和湖泊富营养化防治方面，获得东海赤潮发生、演替全过程资料，证实关键物理过程在赤潮形成初期的重要性，探究表明，长江冲淡水或东海赤潮高发区营养盐组成及含量对赤潮种遴选和赤潮形成具有决定性功能。

The object of study was orchard limy soils in Qin'an County of Gansu Province,a laboratory simulant experiment was carried out to probe into the effects of three sodic salinity(NaHCO3,NaAc,NaCl)on limy soil salinization characteristic(soil total salt,pH,water-solubility sodium,exchangeable sodium).

以甘肃省秦安县果园石灰性土壤为研究对象，利用室内模拟的方法，探讨了三种钠盐(NaHCO3、NaAc和NaCl)对石灰性土壤盐化特性(全盐、pH、水溶性Na+和交换性Na+)的影响。

Soil secondary salinization, it can lowerer the underground water lever and ejecter the soil salt in

为了防止土壤次生盐渍化，良好的排水系统是非常重要的，它可以降低地下水位和排出土壤盐分，做到灌排配套。

Increased maltodextrin concentration leads to salt gain decrease while sugar gain and water loss increase.

麦芽糊精浓度增加，盐吸收量显著降低，糖吸收量和失水量一定程度上增大。

In order to observe the principles of grass carp osmotic dehydration, effects of temperature(5～30℃), time(2～24 h), NaCl(5%～15%) and maltodextrin concentration(0.6～1.2 g/g) and dosage of xanthan gum (0～0.004 g/g) on water loss, sugar gain and salt gain were researched during osmotic dehydration of grass carp sheets.

为了研究草鱼渗透脱水的一般规律，考察了温度(5～30℃)，时间(2～24 h)，NaCl浓度(5%～15%)，麦芽糊精浓度(0.6～1.2 g/g)以及黄原胶添加量(0～0.004 g/g)等对草鱼渗透脱水过程中鱼块失水量、糖吸收量和盐吸收量的影响。

A new water-blocking swellable particle with good temperature-tolerance and salt-tolerance was synthesized from acrylamide and 2-acrylamido -2 - methylpropane sulfonic acid , by means of aqueous solution polymerization.

水膨体是近年来中外广泛研究应用的一种调剖堵水剂，但由于陆上油田注水开发地层的复杂性，对其性能的要求也越来越高。

The method is characterized in that:(1) the reflux of the 2-[N, N- 2amino]-3-cyano-group-4-thiopheneacetic-5-carboxylic acid tetra ester is carried out in the proper sodium hydroxide aqueous solution of alcohol for 5h to 6h and the pH value is kept over 10 during hydrolysis;(2) the ethanol of 20 per cent to 60 per cent is added and then the strontium chloride aqueous solution with 2times to 2.5times molal weight is directly added, precipitates the crystal, is filtered and dried;(3) water is added to carry out the reflux and the little salt packed in the crude product is removed, and the product is collected through heat filtration.

其特征在于：①将2--3-氰基-4-羧甲基噻吩-5-羧酸四酯在适量氢氧化钠水醇溶液中回流5～6小时，水解过程保持pH值10以上；②然后再加入20-60％乙醇，随后直接加入2-2.5倍摩尔量氯化锶水溶液，析出结晶，过滤，晾干；③加水回流，除去粗品中包裹少量盐，热过滤，收集产品。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。