高压化学

Autogenetic heat fracturing technique, which replaces fracturing pad fluid with chemicals in order to increase the backflow volume of fracturing fluid and the oil well productivity, is a technique used for remaking the low permeability reservoirs.

自生热压裂技术是应用化学药剂代替压裂前置液以提高压裂返排率和油井产能的低渗透储层压裂改造技术。

The free radical scavenging properties of six Aloe species are to be investigated in some modified chemical system. The antioxidant was purified by silica column and thin layer chromatography and analyzed by HPLC. A fraction was purified from A. brevifolia Mill showed the most effective scavenging activities on 〓 and ·OH (66. 01% and 38. 98% respectively). With the analysis of IR spectrum, UV spectrum and mass spectrum, the structure of FA was identifed as 8-C-D-glucopyranosyl-2- [2-hydroxy] propyl-5-methyl-7-hydroxychromone. Its scavenging activity on free radicals is higher than that of aloe-emodin. Its antioxidant activity may be due to the phenoxyl on glucosyl chromone which can be react with free radicals and form relatively stable free radicals.

本研究利用分别产生超氧阴离子自由基和羟自由基的化学模型体系研究比较了不同品种芦荟提取物的清除活性氧自由基的抗氧化作用，进一步利用硅胶柱结合薄层层析法和反相高压液相色谱法，从短叶芦荟叶子中首次分离了具有较强自由基清除能力（超氧阴离子自由基和羟自由基清除率分别为66.01％和38.98％）的成分FA，利用红外光谱、紫外光谱和质谱等仪器分析结果推断出该活性成分的分子结构为8-C-吡喃葡萄糖-2-[2-羟基]-丙基-5-甲基-7-羟基对氧萘酮，它的自由基清除能力高于芦荟大黄素，是一种天然抗氧化剂。

It was proved that deformation modulus, compression strength, tensile strength, shear strength and Poisson ratio of lamprophyre could not meet the design requirements after high pressure cement grouting, so chemical grouting was proposed to treat the lamprophyre. High permeable epoxy resin was employed to grout the weathered lamprophyre.

因仅靠单纯的高压水泥灌浆无法使岩体的变形模量、抗压、抗拉、抗剪强度以及泊松比等物理力学指标达到设计要求，应有针对性地采用化学灌浆方法对煌斑岩脉进行加固处理。

A simulated printing and dyeing wastewater, prepared using the undegraded azo dye 4BS and macromolecule chemical dye printing paste CMC as treatment object, the influence of initial pH value, initial concentration, and the concentrations of photocatalyst H2O2 and Fe(superscript 3+) to the photocatalytic degradation effect was investigated, and the related kinetic rule was explored.

以高压汞灯为光源，选用难降解偶氮染料4BS和高分子化学浆料CMC配制的模拟印染废水为处理对象，考察了初始pH值、初始浓度以及光助催化剂H2O2浓度、Fe(上标 3+)浓度对光催化降解效果的影响，并对有关的光催化反应动力学规律进行了探讨。

The nitrogen in fossil fuels is more refractory than sulfur, and microbial approaches for petroleum denitrogenation could be beneficial as the classical hydroprocessing methods are costly and unefficient.

化石燃料中所含的有机氮较有机硫更难以去除，常规的化学脱有机氮技术高压加氢法处理燃油能耗高，处理效果不理想等方面的缺陷使人们思考生物脱氮的可能性。

Erythematous plaques with violaceous and edematous patchesin the palms, soles, and other high-pressure areas are usuallymild and resolve in a week or 2. The problem may, however, evolve into blistering desquamation, crusting, ulceration, and epidermal necrosis if the next chemotherapy cycle is not delayed or thedose reduced. The reviewers point out that palmar-plantar erythrodysesthesia is often uncomfortable and can interfere with the abilityto carry out normal activities.

在手掌、脚跟和其它高压区域的红肿斑块，有紫色以及水肿的片状病灶，通常是轻微且会在1~2周内缓解；然而，若下一次的化学治疗疗程没有延后、或是降低剂量，这个问题可能会恶化成水泡、结痂、溃疡与表皮坏死；作者指出，手掌脚掌红肿感觉异常通常是不舒服的、且可能影响日常生活。

"Chemical explosive s are of two types: detonating explosive s (e.g., TNT, dynamite) have extremely rapid decomposition and development of high pressure; deflagrating explosive s (e.g., black powder, smokeless powder) merely burn quickly and produce relatively low pressure."

化学爆炸物有两类基本的炸药，一为爆轰炸药(如三硝基甲苯〔TNT〕和黄色炸药)，能极快分解，造成高压。二为爆燃炸药能很快燃烧，但产生的压力较低。

"Chemical explosives are of two types: detonating explosives (e.g., TNT, dynamite) have extremely rapid decomposition and development of high pressure; deflagrating explosives (e.g., black powder, smokeless powder) merely burn quickly and produce relatively low pressure."

化学爆炸物有两类基本的炸药，一为爆轰炸药(如三硝基甲苯〔TNT〕和黄色炸药)，能极快分解，造成高压。二为爆燃炸药能很快燃烧，但产生的压力较低。

We use chemical dosing and high pressure atomized water spraying to improve the efficiency.

我们在水中加入一些化学剂和采用高压水喷淋来提高效率。

Mondell engineering stone is high-technical decorating surface which is isomerized and polymerized from picked natural rimed stone ( the conpozation of Sio2 is over 99.99 percent). The stone is glittering, hard. It is not easy to fade or change the shape. It is not radiant and acid-fast. It is antibacterial and clean. It has good physical and chemic performance. This series is wildly used for its beautiful decoration in walls, floor, platform and so on. It combines features of natural stone and PMMA solid surface to get the rich and glittery colour.

蒙代尔工程石是采用精选的天然石结晶矿产为原料（石英砂Sio2的含量达到99.99%以上），在全自动生产线的高温高压状态下异构聚合而成的高科技装饰面材，具有晶莹剔透、硬度高、不变形、不退色、无辐射性、耐酸碱、易清洁、抗菌、卫生等优异的物理性能及化学性能，应用空间相当广泛，可应用于地面、外墙、台面等装饰自然美：真正的石材质感、兼顾天然石和亚克力人造石二者之优点，色彩丰富、晶莹剔透。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。