首先，高温下常规土酸与地层矿物反应速度极快，酸液有效作用距离短，活性酸不能到达地层深部；
First, the speed of the reaction between mud acid and rock is very fast, the effective distance of acid is short, active acid can not reach deep formation.
报道了一种以表面活性剂、丙二烯二胺和柠檬酸、EDTA为主要组分的硫化亚铁清洗剂配方和其在炼油装置应用的情况。
A detergent for cleaning iron monosulfide was formulated with surfactant, diamino-propadiene, citric and EDTA, and its cleaning mechanism was discussed.
到了1897年，一种取自柳树的活性成分柳醇(水杨苷)的衍生合成物——乙酰水杨酸诞生了。
By 1897 a synthetic derivative (acetyl salicylic acid) of the plant's active ingredient (salicin) was created.
此生产过程将带出两种有用的副产品：一是具有商业价值的聚合物高活性无机酸木质素；另外是用在染色和糖尿病患者食物中的木糖。
The process would produce two useful by-products: unsulphonated lignin, a commercially valuable polymer, and xylose, a type of wood sugar used in dyeing and in foods for diabetics.
肉由以下成分组成：蛋白质和氨基酸、矿物质、脂肪和脂肪酸、维生素和其它生物活性成分及少量的碳水化合物。
Meat is composed of protein and amino acids, minerals, fats and fatty acids, vitamins and other bioactive components, and small quantities of carbohydrates.
收集器里配有不同成分的纤维，每种纤维所含的活性分子都各异，比如有机酸、醇、胺、甲酮等。
The collectors contained fibres of different compositions, each of which absorbed a unique range of volatile molecules such as organic acids, alcohols, amines and ketones.
这种三维构造通过肽链上不同部位上的氨基酸连在一起，决定了蛋白活性。
This three-dimensional conformation is held together by the interactions of the amino acids at different parts of the polypeptide chain with each other, and determines the activity of the protein.
里卡多在用与之密切相关的活性更强更可靠的核苷酸系统进行实验。
Ricardo is experimenting with closely related, more reactive and reliable nucleotide systems.
酶的催化中心是由一组氨基酸组成，其三维结构形成活性位点，允许它高效地结合或修饰底物。
The catalytic center of an enzyme is composed of a set of amino acids whose three-dimensional arrangement forms the "active-site" that allows them to efficiently bind and modify the substrate.
因为一项新的研究表明，人类可以自己生成水杨酸，水杨酸是构成阿司匹林的大量活性成分。
Because a new study suggests that humans can make their own salicylic acid, which forms the bulk of aspirin's active ingredient.
受损的MAGL依赖性肿瘤生长能通过高脂肪饮食恢复，表明在缺乏MAGL活性的癌症中外源性脂肪酸可有助于其侵袭性。
Impairments in MAGL-dependent tumor growth are rescued by a high-fat diet, indicating that exogenous sources of fatty acids can contribute to malignancy in cancers lacking MAGL activity.
本文综述了氨基酸型两性表面活性剂应用于皮革中的研究动向，并重点介绍了其分类及合成方法。
In this paper, the classification and synthesis methods of amino-acid type amphoteric surfactant, and the progress of its application in leather industry were introduced.
着重总结了非蛋白氨基酸对生物活性肽进行修饰的方式和构效关系研究的进展。
Recent progress in modifying the bioactive peptides with non - protein amino acids and their preferences are generally reviewed.
本文介绍了脂肪酸近年来在我国的生产及合成工艺，特别介绍了脂肪酸在表面活性剂和日用化学品中的应用。
The thesis review the production of fatty acid and synthesis, especially its application in surface active agent and daily chemical inclustry etc.
目的：探讨反义寡核苷酸对胆囊癌细胞端粒酶活性的影响及对胆囊癌细胞生长增殖的作用。
Objective: To study the antisense oligonucleotide mediated inhibition on telomerase activity and cell proliferation of GBC-SD cell.
用草本植物，活性物，抗氧化剂和必需脂肪酸来滋养肌肤。
Enrich the skin with herbs, actives, antioxidants and essential fatty acids.
然后，结合丙烯酸树脂的光固化特点，从光源、活性稀释剂、引发剂体系等多方面考虑，主要是改进引发剂体系，找到了合适的抑制表面氧阻聚的方法。
Then, considering many respect such as light source, diluent and photoinitiator, mainly improving photoinitiating system, we found the solutions to oxygen inhibition of acrylic resin in uv-curing.
芦荟精华素含有相当多的水杨酸(阿司匹林的活性成份)，在芦荟的止痛功能中它起到了某些作用。
Aloe Vera contains significant levels of salicylic acid (the active ingredient in aspirin), which accounts for some of aloe's pain-killing potential.
本文对山楂酸的来源和药理活性进行了简要综述。
In this paper, the preparation and bioactivities of maslinic acid are reviewed.
采用化学及生物催化的方法合成几种具有生理活性的阿魏酸衍生物。
The advantages of ferulic acid derivatives were that they have both anti - oxidative ability and functional physiological activity.
研究了宫内乙醇暴露对新生大鼠脑唾液酸含量及唾液酸酶活性的影响。
We have investigated the effects of ethanol exposure in utero on the content of sialic acid and sialidase activity in newborn rat brain.
介绍了某些天然存在的含非蛋白氨基酸的生物活性肽及非蛋白氨基酸残基在相应活性肽中的重要作用。
Some peptides containing non - protein amino acid residues are introduced and the essential roles of these residues are discussed.
以细胞化学法测定琥珀酸脱氢酶（SDH）的活性。
The activity of succinate dehydrogenase(SDH) was assayed with cytochemical method.
磷矿中碳酸盐的含量及在磷矿晶体中的存在状况对磷矿的酸解反应活性有着较大的影响。
The content of carbonate and its presence status in phosphate ore have large effect on acid decomposition activity of phosphate ore.
采用酸、表面活性剂、碱并配以合适的脉冲清洗，有效恢复膜的渗透通量。
The permeation flux can be recovered by washing with acid, surfactant and base as well as appropriate pulse washing.
采用酸、表面活性剂、碱并配以合适的脉冲清洗，有效恢复膜的渗透通量。
The permeation flux can be recovered by washing with acid, surfactant and base as well as appropriate pulse washing.
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