酸碱的

The research indicated that the variation of rain acidity,acid rain frequency and the equivalent concentration ratio of the chief anion ions to positive ones all presented conspicuous ascending trend,the chemical component of the rain was primarily influenced by the acidic gas and marine...

研究表明，深圳市降水酸性、酸雨频率以及酸碱离子当量浓度比值都呈显著的上升趋势，降水的化学成分主要受到社会经济活动产生的酸性气体以及海盐成分的影响，深圳及珠三角地区二氧化硫和氮氧化物排放量的增加是酸雨日益严重的重要原因。

As a new material with many functions: being light, heat insulation, bearing acid and alkali, non-toxic, incombustible, not having fetid odor, the floating bead of pulverize coal ash was firstly chosen to produce light preservation material. In the article, a suitable production way and a new method of using pulverize coal ash systematically were found, which had active effect on stove industry and the refractoriness of light preservation brick with floating bead is 1100~1300℃, the suitable temperature was 400~1150℃, thermal conductivity is 0.105~0.127W.

粉煤灰漂珠作为一种新兴多功能材料，由于它具有轻质、绝热、耐酸碱、无毒、不燃烧、无臭味等特点，将之用作生产轻质保温材料首选材料，并探索出一条合理的生产工艺路线，为粉煤灰的综合利用开辟了一条新途径，对窑炉工业的发展将产生积极的推动作用；生产的轻型漂珠保温砖的耐火度为1100~1300℃，最佳使用温度为400~1150℃，导热系数为0.105~0.127W。

objective to discuss perioperative complication and management of patient with high risk copd following esophagectomy.methods 45 patients with high risk copd underwent esophagectomy with epidural block combined with general anesthesia.perioperative treatment included smoking cessation,chest physiotherapy,prevention and control of infection of air way and appropriate bronchodilators of air way,breathing exercises,nutrition support and oxygen therapy.painkiller was instilled after surgery,early exercises,ensuring unobstruction of the air way,mechanical ventilation was applied when needed.results 3 had hypoxaemia in operation.after surgery,all patients had spo2 somewhat declined.6 had lung infection.6 were removed of bronchial secretion by bronchoscope.2 were supported by ventilator by using intubation.2 underwent tracheotomy.1 had disturbances of acid base balance and treated by using hydrochloric acid muriatic acid.all patients recovered rather smoothly and discharged from hospital.conclusion high risk copd is not the absolute contraindication of esophagectomy.active management before and after surgery ensures the safety and recovery of patients.

目的 探讨重度慢性阻塞性肺疾病简称慢阻肺病人食管切除术围手术期常见并发症及其处理。方法 45例重度慢阻肺的病人在全麻联合硬膜外阻滞下进行开胸食管切除手术，围手术期处理包括术前戒烟、胸部理疗、预防和控制呼吸道感染、解痉化痰、呼吸功能锻炼、营养支持和氧疗；术后硬膜外镇痛、早期锻炼、保持呼吸道通畅，部分病人予以呼吸支持。结果术中3例出现低氧血症。术后所有病人pao2均有不同程度的下降，6例出现肺部感染，6例行纤维支气管镜吸痰，2例通过气管插管给予呼吸机支持，2例行气管切开术，1例酸碱平衡紊乱使用盐酸精氨酸治疗。所有病人均痊愈出院。结论重度慢阻肺病人并非开胸食管切除手术的绝对禁忌证，积极的术前准备和严格的术后管理可减少和控制术后急性发作，有助于确保此类病人的围手术期安全和康复。

The study of the course can make students to understand and grasp the basic theories about periodic law of elements, modern mass structure theory, thermodynamics, chemical kinetics, four kinds of equilibriums of acid-base, oxidation-reduction, precipitation- dissolution and coordination and so on. It can also help students grasp basic chemical experimental skills. It has being tried to cultivate students with correct methods of study and research, with favorable innovation consciousness and with scientific character. And it has being expected to greatly improve students' abilities of analyzing and resolving questions.

通过本课程的学习，使学生理解并掌握元素周期律、近代物质结构理论、化学热力学、化学动力学、溶液中的酸碱平衡、氧化还原平衡、沉淀平衡和配位平衡等基本理论并掌握基本的化学实验技能；培养学生正确的学习和研究方法、良好的创新意识和科学品质，训练学生分析、解决问题的能力。

Moreover, the influence of carbonate on the adsorption process was also studied. Under the anoxic condition, the AVS in Guanting Reservoir sediments controlled the partitioning of most of the metal ions between sediments and pore water.

对于渭河潼关沉积物，由于在组成上和黄土有很大的相似性，本文建立了与黄土类似的表面络合模型，并成功的模拟了潼关沉积物的表面酸碱反应特性及其对铜和镉的吸附特性，同时探讨了碳酸盐在吸附中的影响。

The research on bound rubber and reinforcing effect of mineral filler showed that there are four kind of interactions between filler and rubber matrix in uncured mix The unbounded rubber on the surface of filler will solve in organic solvent The rubber bounded by stronger physical or chemical interaction with filler will dissolve in organic solvent The bound rubber on the surface of filler by different extent acid-base interactions will solve in basic organic solvent The bound rubber on the surface of filler by chemical action (no acid-base type) will dissolve in basic organic solvent

结合橡胶和增强作用的研究表明，在混炼胶中，硅橡胶与矿物填料的作用形式有四种。没有联结在矿物表面的非结合橡胶和仅靠物理吸附联结在填料表面的硅橡胶将溶解于有机溶剂；与填料有较强相互作用的硅橡胶不溶于有机溶剂；通过不同层次的酸碱作用联接在矿物表面的硅橡胶将溶解于碱性有机溶剂；与填料有牢固化学结合的硅橡胶不溶于碱性有机溶剂。

The Taohezhenwu Decoction has good curative effect in treating and preventing CRF of rats induced with adenine by improving the renal function, electrolyte disturbances, acid-base equilibrium, hemophthisis and the function of SOD, reducing the harm of NO, TNF-α, and lessening or delaying the deterioration of nephron.

桃核真武汤能改善腺嘌呤大鼠慢性肾衰模型的肾功能、调节电解质酸碱平衡紊乱、纠正贫血、减少尿蛋白的丢失、减少NO与TNF-α损伤、提高SOD的保护作用、一定程度上防止肾单位的恶化，对SD大鼠腺膘呤所致之CRF的防治有肯定的疗效。

The relation between accessibility of amino acids and the property of enzyme was discussed, and the relation between accessibility of amino acids and the isoelectronic point of enzyme was studied.

酶总是在一个特定的pH范围内发挥功能。酸碱性质是它的一个重要的理化性质，等电点是它的一个重要的参数，研究它有利于更好的认识酶的功能。

As to the high polarity, high boiling point resultant—trimesic acid, the analysis methods of infrared spetrum, gas chromatography-mass spectroscopy, vapour-phase chromatography, acid number titration and so on are seperately used to characterize its property. Infrared spetrum and gas chromatography-mass spectroscopy are used to have a qualitative analysis on the resultant and are compared with the stand diagram. Sulfuric acid-methanol esterification and rapid esterification are used to prepare the trimesic acid trimethyl-ester and have a FID quantitative analysis. So that we make sure the purity of trimesic acid in the resultant and also we have an acid alkali titration on the resultant to get its acid number, in order to verify the purity of trimesic acid in the resultant.

对于高极性、高沸点的固体产物均苯三甲酸，分别采用红外光谱、气质联用、气相色谱、酸值滴定等分析手段进行了表征：利用红外光谱、气质联用的方法进行产物的定性分析，并与在同一仪器、同一条件下做出的标准谱图进行比对；采用硫酸-甲醇酯化法和快速酯化法制备出均苯三甲酸三甲酯，对其进行气相色谱FID定量分析，进而确定固体产物中均苯三甲酸的纯度；用酸碱滴定法确定固体产物的酸值，以对固体产物中均苯三甲酸的纯度进行验证。

Heat sintered ZrO_2 ceramic does not react with any acids and bases except HF. It can't be coarsened by the traditional pretreatment process. Through a great deal of experiments, author found a kind of coarsened prescription which can corrode ZrO_2 ceramic, forming many holes and troughs on its surface.

高温烧结后的ZrO_2陶瓷的化学稳定性很高，除HF外不溶于任何酸碱，传统的粗化液对它没有粗化作用，笔者通过大量的实验，找到了ZrO_2陶瓷粗化液的配方，它能在ZrO_2表面腐蚀出大量均匀的微坑和凹槽。

Fancy gold-plated dangling earrings with facetted White Opal crystals.

花式镀金悬垂耳环与facetted白欧泊水晶。

This essay chooses the study aim from biology teachers in middle school in Shi Jiazhuang which tells us that most of the middle school biology teachers in Shi Jiazhuang have the"burnout", lower successfulness, individualize.

本文选取石家庄市初中生物教师作为研究对象，运用问卷调查的方法对石家庄市初中生物教师职业倦怠的现状进行调查，调查结果发现，石家庄市初中生物教师这一群体普遍存在职业倦怠，情感枯竭程度偏高，成就感偏低，去个性化程度最为严重。