碳

Microbial biomass in soil profile showed negative relation with soil pH value and bulk density, while positive correlation with contents of soil organic carbon, light fraction and particulate organic carbon and fine root biomass were found. There were no significant difference between soil microbial biomass and DOC, total N, total P, hydrolyzable N and available P.

土壤微生物生物量垂直分布与土壤pH和容重呈负相关，与土壤的有机碳、轻组有机碳和颗粒有机碳含量及细根生物量呈显著的正相关，但与土壤可溶性有机C和全N、全P、水解性N和速效P含量的相关性不显著。

Heat treating technology development closely connected with three large scale technology andequipment importing is reviewed, and the fbatures of hcat treating specialization and large scale production areanalyzed. Main tcchnical progresses ofgas carbonitriding instead ofliquid cyaniding, improvement ofcontrol accuracyin gear carburizing, improvement of carburizing layer unitbrmity by preoxidation, increment of raw gas purity incontrolled atmosphere use of fbrging wastc heat cooling control for normalizing,...

回顾我国汽车工业热处理技术发展与3次大规模技术引进密切相关，分析了汽车工业热处理技术发展专业化，规模生产的特点，列举了10年来在气体碳氮共渗取代液体氰化；齿轮渗碳控制精度提高；采用预氧化工艺提高渗碳层均匀性；解决可控气氛中原料气纯度以及锻造余热控冷正火和等温正火技术的应用等方面嵢〉玫闹饕删停岢龈咝＝⑷却砩璞缸ㄒ档冉ㄒ椤

In order to improve the solubility of the CNTs in solution without any structural damage, the surface-modified approach with noncovalent bond is considered. Anionic polyelectrolyte, poly(sodium 4-styrenesulfonate), used as modifier was applied to overcome the difficulty of CNT's dispersion into insoluble and infusible polymer matrix.

为了使奈米碳管在高分子基材中达到良好的分散性，又不会破坏其原始特性，本研究采用非共价键结表面改质的方式来进行奈米碳管之分散，研究中以阴离子型聚电解质，Poly(Sodium 4-Styrenesulfonate)，为奈米碳管分散剂。

The biggest effect that carbon markets have had on emissions so far, according to Kristian Tangen of Point Carbon, has been on investment in developing countries. The Kyoto protocol, a 1997 agreement on emissions, set up a "clean development mechanism" by which reductions in greenhouse gases in developing countries could generate a carbon credit that can be traded alongside the EUA.

碳点公司的克里斯蒂安·唐更说，迄今为止，碳市场对二氧化碳排放影响最大的就是对发展中国家的投资。1997年签订的关于二氧化碳排放的京都议定书建立了一个&洁净发展机制&，通过它发展中国家减少排放的温室气体所产生的碳额度可以与欧盟配额一起用作交易。

By means of molecular designing, a series of sodium branched-alkyl benzene sulfonates weresynthesized through seven process, involving Frieded-Crafts reaction, Grignard reaction, sulfonationand neutralization. Those isomers have similar structure, carbons of same quantity, but the position ofalkylaryl dissimilarity. Liner fat acid, metaxylene and halogenated hydrocarbon of different carbonnumber were used as the starting materials. Optimum processing condition was confirmed consideringinfluence of a series of reaction factors such as feed proportioning, quantity of catalysts, quantitysolvent, reaction time, temperature and pressure. Eight kinds of isomers of sodium hexadecylxylolsulfonates were finally synthesized, and characterized by FT-IR.

本文通过分子设计，以不同碳数直链脂肪酸、间二甲苯以及不同碳数的卤代烷为原料，经酰基化、格氏反应、加氢还原、磺化及中和等反应，合成了结构相似、烷烃链碳数一定、芳基在烷烃链不同位置的烷基芳基磺酸盐同分异构体；并考察了原料配比、催化剂用量、反应时间、反应温度、溶剂用量、反应压力等一系列因素对各反应的影响，进而确定最佳工艺条件，最终合成出十六烷基二甲苯磺酸钠的八种同分异构体，利用 FT-IR 对产物结构进行了分析。

Green tea contains a number of flavonols with the basic structure Specific flavonols found in tea include myricetin (hydroxyls at carbon 3', 4', and 5'), quercetin (hydroxyls at positions 3' and 4'), and kaempferol (hydroxyl at position 4'), and their glycosides.

绿茶含有一些黄酮醇，其基本化学结构为：茶中特有的黄酮醇有杨梅黄酮(3'、4'、5'碳位上羟基化)、豕草花粉苷(3'和4'碳位上羟基化)，莰非醇(4'碳位上羟基化)，以及它们的糖苷物。

The results showed that myristic acid(14∶0) and linoleic acid (18∶2) were significantly increased,and positively correlated with the levels of TC, TG, LDL-C and apoB;while the levels of docosahexaenoic acid (DHA,22∶6),arachidonic acid (20∶4) and docosatetraenoic acid (22∶4) and stearic acid(18∶0) are significantly decreased, and inversely correlated with the levels of TC, TG, LDL-C and apoB in patients with hyperlipemia.

结果表明：患者肉豆蔻酸(14∶0)和亚油酸(18∶2)明显增高，与总胆固醇、甘油三酯、低密度脂蛋白-胆固醇和载脂蛋白B水平呈正相关；而二十二碳六烯酸(DHA，22∶6)、二十碳四烯酸(AA，20∶4)和二十二碳四烯酸(22∶4)以及硬脂酸(18∶0)明显降低，与TC、TG、LDL-C和apoB水平呈负相关。

The results showed that myristic acid(14∶0) and linoleic acid (18∶2) were significantly increased,and positively correlated with the levels of TC, TG, LDLC and apoB;while the levels of docosahexaenoic acid (DHA,22∶6),arachidonic acid (20∶4) and docosatetraenoic acid (22∶4) an...

结果表明：患者肉豆蔻酸（140）和亚油酸（182）明显增高，与总胆固醇、甘油三酯、低密度脂蛋白－胆固醇和载脂蛋白B水平呈正相关；而二十二碳六烯酸（DHA，226）、二十碳四烯酸（AA，204）和二十二碳四烯酸（224）以及硬脂酸（180）明显降低，与TC、TG、LDL－C和apoB水平呈负相关。

For TRO there are a little surfacatants whose effect are not good.In this paper,content of sulfonates and composition of alkyl are decided through right design ;under control reaction conditions different alkylbenzene sulfonates are synthesized;Polyreaction catalyst is developed .non-straight high carbon olefine are made through C9-C12 Polyreaction technolgy;clear composition alkylkenzene is sulfanated in falling-film reactor by SO,product can be adjusted,recipe of the surfacate can be used for super-low interfacialtension with Daqing oil -10-3-10-4mN/m,and stablity is good too.According to method issued by Daqing Develop and Explore Research institute,EOR is over 20% in natural core .

本文研究通过烷基苯磺酸盐组成的正确设计，确定了磺酸盐的当量范围和烷基碳数组成和分布；通过对烷基化条件控制，设计合成了不同碳数的直链和支链烷基苯及烷基二甲苯，并用于制备了相应的烷基苯磺酸盐；研制出了新型的烯烃叠合络合催化剂，采用C_9、C_(12)支链烯烃叠合工艺合成了更高碳数的支链烯烃，并进一步合成出相应的烷基苯和烷基二甲苯；以SO_3为磺化剂，通过对磺化条件的选择和控制，采用已知组成的烷基苯混合物进行膜式磺化反应，使合成工艺得以简化；所得磺酸盐组成确定并且可控，最终配方可与大庆原油形成超低界面张力，达10~3～10~(-4)mN/m数量级，且稳定性良好；以合成的烷基苯磺酸盐为主体形成了三元复合驱配方，室内驱油模拟实验表明，按照大庆研究院对复合驱体系活性剂的评价方法，在天然岩芯上的驱油效率在20％以上。

The effects of the spray-drying process of the ammonium paratungstate and the carburization temperature on the formation of the precusor and WC powder were investigated.

采用喷雾干燥-固定床法制备碳化钨粉末，研究了喷雾干燥和碳化反应温度对制备偏钨酸铵前驱体以及碳化钨的影响，前驱体粉末呈现均匀的球状形态，平均粒径为10~20μm，喷雾温度对影响粒径大小和分布影响小；400℃的进口温度下进行喷雾干燥，喷雾粉末仍然保持偏钨酸铵原来的基本组成不发生分解。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。