直链

With intermediates 1,ω-hexadecanediol and ω-bromo pentadecanol as starting materials,ω-bromo hexadecanoic acid and ω-bromo octadecanoic acid were prepared in four and seven steps of reactions separately.

分别以1，ω-十五烷二酸和1，ω-十六烷二酸为原料，各经过四步有机反应，制备了ω-碘代十六烷酸及含十四、十五、十六碳原子的ω-溴代直链脂肪酸；再以中间产物15-溴代十五烷醇、1，ω-十六烷二醇为原料，各经过四步、七步有机反应，制备了ω-溴代十六烷酸及ω-溴代十八烷酸。

Two kinds of high alcohol acrylates were prepared by octadecyl alcohol and hexadecyl branched alcohol,respectively.The polymers of depressants were prepared by maleic anhydride-styrene-higher alcohol acrylates.By using these depressants,the pour points of the Liaohe crude oils were lowered form 30℃ to 20℃.

分别采用碳十八直链醇、碳十六支链醇与丙烯酸合成烷基酯，将烷基酯再与顺丁烯二酸酐、苯乙烯聚合制备的三元共聚物，对辽河油田的高凝原油的降凝效果进行了评价，实验发现这两种聚合物对凝固点为30℃原油都具有较好的效果，降幅可达10℃左右，但对凝固点为41℃的原油较差分别为3℃和6℃。

Japonic rice ; low amylose content ; tassel period

水稻；低直链淀粉含量；抽穗期

This paper introduce the character of pueraria lobata starch,chemical composition and pharmacological function of pueraria lobata.

葛根淀粉与玉米淀粉、甘薯淀粉在淀粉糊的透光率、冻溶性、凝胶强度和对酸碱的稳定性上有差别；采用正丁醇重结晶法，可以把葛根淀粉的支链淀粉和直链淀粉从整个淀粉体系中分离开来。

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。

Glucopyrone at room temperature for Ihr. Then it is leached, cooked for 5 min in 6 times boiled water immediately, followed by cooking at 90癈 for 25 min, during which mixture of sucrose fatty acid ester and monoglycerid must be added to the cooking water.

适宜的工艺参数为：将较低直链淀粉含量(＜16％)的粳米，用常法水洗后，以0.2％三聚磷酸钠与0.4％葡萄糖酸-δ-内酯混和溶液于室温浸泡1hr，沥水后投入6倍量沸水中煮制5min，再于90℃恒温水浴加热25min。

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。

Pseudanabaene sp., Microcystis aeruginosa, and Aulacoseira granulate were dominant in pumped type reservoirs, while Peridinium sp.

铜绿微囊藻和硅藻门的颗粒直链藻是抽水型水库中的优势种属，甲藻Peridinium sp。

1D-SDS-PAGE eletrophoresis and molecular markers were employed to survey the Waxy proteins and Waxy genes in 312 winter wheat cultivars and lines from Chinese winter wheat and U.S.A. and Austrilia, 60 lines selected from the cross of Baihuomai and Norin 67 which was detected preliminarily to be waxy wheat with Iodine-dyeing-seed-section , 120 F2 plants from cross of Lu935031(Jimai19) and Yumai 47 . Amylose content and RVA properties were also recorded. The major results were presented below:1 The components of waxy protein subunits could be detected precisely by 1D-SDS-PAG Eelectro- phoresis.

以国内外冬播小麦品种312份、从白火麦×Norin 67中选育出经碘染籽粒剖面初步鉴定为糯性小麦的品系60份以及鲁935031×豫麦47的F2代120个单株为材料，利用1D-SDS-PAGE电泳技术研究了Waxy蛋白亚基组成，并利用分子标记检测了相应Waxy基因；检测了部分材料的直链淀粉含量和RVA特性等，分析了国内主要麦区小麦淀粉特性；结合生化标记、分子标记和淀粉特性三者各自的优势，探讨了快速、准确、简便筛选具有优良淀粉品质的小麦资源和品种的途径。

Property : This product is a polymer composed of carboxyl, sulphonic, phosphonic . There is organophosphate in the chain and side chain, so it is of superior effect of scale-preventative and be of certain corrosion-proof effect.

5.1性能：本品是含有羧基、磺酸基、膦酸基羟基等基团的共聚物，由于它的直链上和部分支链端含有膦基酸，因此本共聚物具有优异的防垢性能，并具有一定的防腐蚀性能。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐