化学

The iron, in which the carbide has a high chemical stability and the matrix possess a matchable oxidation resistance, can be well resistant to abrasive wear at elevated temperature. In addition, the high temperature abrasive wear resistance of the high Cr—Ni cast iron containing eutectic carbide is much better than that of 0Cr26Ni14 heat resistant steel in which no carbide exists.

结果表明，M〓C〓型碳化物的高温化学稳定性对高Cr—Ni铸铁合金的抗高温磨料磨损性能有显著的影响，碳化物的高温化学稳定性愈好，基体的抗氧化性又能与之相匹配，合金的高温抗磨性就愈好；而且，含有碳化物的高Cr—Ni铸铁合金的高温抗磨性远优于不含碳化物的0Cr26Ni14耐热钢。

We study it, in order to understand the application of mathematical formula in physics and chemistry more deeply.

在物理学上，有许多重要的物理量间的关系如大气压强随高度的变化关系，分子松弛运动与时间的关系等，均可用指数关系式或对数关系式来表示；在化学中，特别是化学反应速度与温度的关系，化学平衡常数随温度的变化等，通常也可用指数关系式或对数关系式来表示。

This is the webpage of Journal of Medicinal Chemistry, which is published by the American Chemical Society.

这是《医用化学杂志》的网页，由美国化学学会出版。

The results showed that the decomposition of 4-nitroimidazole began with the split of the C—NO2 bond in the temperature range of 185—210℃. The strongly oxidative product NO2 destroyed the instable annulus of 4-nitroimidazole instantly, all the other C＝N, C＝C, C—H and N—H bonds of the five membered ring were broken simultaneously, and the detected gas products of 4-nitroimidazole decomposition were NO2, CO2 and CO.

结果表明，4-硝基咪唑的催化热分解起始于其分子中C-NO2化学键的断裂，温度范围是185~210℃。C-NO2键的强氧化性的裂解产物NO2瞬间作用于4-硝基咪唑分子中不稳定的五员环，使化学键C=N、C=C、C-H和N-H同时被打破。4-硝基咪唑的气体分解产物包括NO2、CO2和CO。

In 8 cm grafted group , all survival dogs(n=5) were held upright with the affected hindlimb extended so that the body's weight was supported by the distal metatarsus and toes.

摘 要：［目的］研究神经长度能否影响化学去细胞神经的质量及化学去细胞异体神经修复犬神经缺损的适当长度范畴。

Phosphates ;; Glucose ;; Chemistry, Clinical ;; Biochemistry ;; Automation ;; Methemoglobin ;; Heterozygote ;; Clinical Medicine ;; Enzymes

磷酸盐类；；葡萄糖；；化学，临床；；生物化学；；自动化；；高铁血红蛋白；；杂合子；；临床医学；；酶类

Phosphate porous starch and PVA were cross linked by methenamine and boric acid Crystal area was serious destroyed by esterification and cross linked. 6 Biodegradation experiment was carried out with soil-burying method.

5红外光谱和X-射线衍射的结构分析表明：在改性淀粉的羟基上引入了磷酰基团，并未破坏原淀粉的基本化学结构；交联剂在改性淀粉和PVA之间形成了C-O-C化学交联键；酯化和交联反应均有较强的淀粉晶区破坏作用。

The supplemental environmental projects include funding for a research program to evaluate the potential for fluorotelomer biodegradation; and funding for microchemistry and green chemistry programs in certain West Virginia schools.

这两个环保项目包括：为一个评估氟调聚物生物降解性的研究计划提供资金，以及资助在西维吉尼亚州的若干个学校开展微量化学和绿色化学的项目。

Presently, the main contents for microchemistry study in cephalopod statolith are composed of inorganic and organic molecules, minor and trace elements, isotope as well as microchemical markers. Minor and trace elements were the important part among the application, which played an important role in discriminating different populations, analyzing life history and reconstructing inhabited environment condition.

目前头足类耳石微化学的研究内容主要包括无机和有机大分子、微量元素、同位素、微化学标记等方面，其中微量元素是应用研究的重点，在头足类种群识别、生活史分析及栖息环境重建等方面发挥了重要作用。

By integrating the multi-discipline methods of petroleum geochemistry, sedimentology, hydrogeology, petroleum geology and experimental geochemistry, the thesis has carried out experiments of microcline dissolution in solutions with organic acids, crude oil, brines with high total dissolved solids , and has dealt with Al distribution between the crude oil and the brines after the experiments.

综合利用油气地球化学、沉积学、水文地质学、石油地质学、实验地球化学多学科交叉方法，进行了长石在有机酸、原油、高矿化度卤水中的溶解实验，研究了溶解后元素Al在油水相中的分配；通过详细研究塔里木盆地塔中地区、和田河气田、库车坳陷和塔北隆起北部油气藏流体的化学、同位素组成，观察岩石薄片、测试流体包裹体成分和均一化温度、全岩和自生矿物同位素组成，并结合油气运移和成藏史的研究成果，分析了三地区流体的成因、流动，并探讨了烃类侵位对成岩作用的影响、微生物和热化学的硫酸盐还原作用。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。