Experimental solubilities of terephthalic acid dissolved in N,N-dimethyl propionamide, N,N-diethyl propionamide and N,N-diethyl acetamide were determined in the temperature range of

測定了303.2~363.2K溫度范圍內(nèi)，對苯二甲酸在N黄片毛片视频久久，N-二甲基丙酰胺午夜aa视频免费、N，N-二乙基丙酰胺和N亚洲黄色视频肏屄，N-二乙基乙酰胺中的溶解度亚洲岛国性爱视频。

On the other hand, Let M~n be an z-dimensional complete noncompactoriented submanifold with finite total curvature in an-dimensional simplyconnected space form F~ of constant curvature c. In this thesis, we provethat if M satisfies one of the following: n≥3, c=0 and integral from n=M H~n＜∞;n≥5, c=-1 and H＜1-2/n~(1/2); n≥3, c=1 and H is bounded, where Hdenotes the mean curvature of M. then the dimension of the space of L~2 harmonic1-forms on M is finite.

本文還證明：若具常曲率c的完備單連通空間型F~中具有有限全曲率的n維完備非緊可定向子流形M滿足下面條件之一：n≥3，c=0且integral from n=M H~n＜∞亚洲黄情；n≥5久久r性，c=-1且H＜1-2/n~(1/2；n≥3超碰在线永久，c=1且H有界的亚洲电影色色黄片，則M上L~2調(diào)和1-形式空間的維數(shù)是有限的，這里H為M的平均曲率久久久好视频。

From the point of latitude, the fishing ground is mainly located in the waters of 40°N-43°N before 1999,while in the waters of 39°N-41°N and 43°N-45°N in 2000 and 2001 respectively.

從作業(yè)緯度來看求a片网址，1999年以前主要產(chǎn)量集中在40°N～43°N 海域，而2000和2001年則分布在39°N～41°N和43°N～45°N 海域欧美人人做人人爱视频。

The biological activity tests show that some target compounds have a good activity as plant growth regulator, and N-5-(3-carboxy-1H-1,2,4-triazolyl)-N'-o- chlorophenylfonnyl urea, N-5-(3-carboxy-1H-1,2,4-triazolyl)-N'-o- bromophenylformyl urea, N-5-(3-carboxy-1H-1,2,4-triazolyl)-N'-p- methyl-phenyl formyl urea have excellent activity of auxin.

生測試驗證明部分跎线贤局苯涌吹模基脲類化合物具有良好的植物生長調(diào)節(jié)活性，其中N-5（3-羧基-1www.无码在线，2美女的隐私秘免费视频网，4-三唑基）-N'-o-氯苯甲酰基脲国产产一区二区三区久久毛片最强、N-5-（3-羧基-1无码视频在线观看网站，2，4-三唑基）-N'-o-溴苯甲跖访佬园丈洌基脲和N-5-3-羧基-1中国体内精谢免费视频， 2，4-三唑基）-N'-p(或m-甲基苯甲豕客喔咔逶谙呔芬磺基脲具有優(yōu)良的生長素活性99riav.m3u8。

N,N-dimethyl-N'-(2-trifluorometyl-1-pentafluoroethyl) perfluoro propenyl propane diamine and N,N-dimethyl N'-(2-trifluorometyl-1-pentafluoroethyl) perfluoro propene propane diamine were prepared by the reaction of hexafluoropropene dimer and N,N-dimethyl propanediamine in the molar ratio 1:1.0 at about 35℃for 8h, and the structures of I were identified by IR and NMR spectra.

本文以六氟丙烯二聚體和N，N-二甲基丙二胺為主要原料合成了兩種含氟中間體叔胺——N禁看网站，N-二甲基-N'-(2-三氟甲基-1-五氟乙基)全氟丙烯基丙二胺和N欧洲vodafonewifi18√k，N-二甲基-N'-(2-三氟甲基-1-五氟乙基)全氟烯丙基丙二胺，用薄層色譜和柱色譜等方法對產(chǎn)品進(jìn)行分離提純成人免费视频网站，并運(yùn)用紅外光譜和核磁共振等分析手段對其結(jié)構(gòu)進(jìn)行了表征国产,日本,欧美,校花在线视频。

The results were as follows:The unit-roots characters (weight, length etc.) and 15N absorption decreased progressively downward. 15N absorbed by any unit roots could be transported from root to tiller and from tiller to tiller, but the transporting ratio was different.The pattern was as follows: when 15N was offered to total roots of plant or only to primary roots, it was transported to main stem and then decreassingly to tillers from lower unit to upper one, when 15N was offered to n unit-root, it was transported to n unit tillers, then to n + 2 or n-2 unit tillers , followed by n + 1 or n -1 unit tillers , and finally to other unfeed roots.

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Seven Schiff bases of N-(4-hydroxyphenylmethylene)-1-naphthylamine, N-(4-hydroxyphenylmethylene)-p-methoxyaniline, N-(4-hydroxyphenylmethylene)-benzylamine, N-(4-hydroxy-3-methoxyphenylmethylene) furfurylamine, N-(4-hydroxy-3-methoxyphenyl methylene)-p-methylaniline, N-(4-hydroxy-3-methoxyphenylmethylene)-p-methoxyaniline and N-salicylidene-4-aminoantipyrine were first synthesized by the one step solid phase reactions between aromatic aldehydes with phenolic hydroxyl and amines at room temperature without solvent.

分別以帶酚羥基的芳醛與胺類反應(yīng)，首次通過室溫固相反應(yīng)一步合成了N-（4-羥基苯基亞甲基）-1-萘胺免看一级a一片日韩A片、N-（4-羥基苯基亞甲基）-對甲氧基苯胺欧美在线免费观看视频、N-（4-羥基苯基亞甲基）-芐胺、N-（4-羥基-3-甲氧基苯基亞甲基）糠胺人人澡人人爽人人夜夜、N-（4-羥基-3-甲氧基苯基亞甲基）-對甲苯胺、N-（4-羥基-3-甲氧基苯基亞甲基）-對甲氧基苯胺和N-亞水楊基-4-氨基安替比林7種Schiff堿特黄一级乱淫A片，反應(yīng)15min完成色色肉肉视频，產(chǎn)率均超過90％。

The genome DNA was amplied and electrophoresis of Sichuan 7 native goat breeds and1 cultivated breed, including Tibet goat(n=27)免费看一级大黄片、ChengDu Ma goat(n=20)欧美三级网站、JinTang blackgoat(n=21)、LeZhi black goat(n=24)大学生一级A片、JianChang black goat(n=23)最美情侣高清免费观看、BeiChuan white goat(n=26),Jian Yang Daer goat(n=30) and NanJiang yellow goat (n=90), using 5 pairs of microsatelliteprimers.

選用5對微衛(wèi)星引物，對四川7個地方山羊品種—簡陽大耳羊(n=30)亚洲欧美综合久久久久久小说、建昌黑山羊(n=23)自拍偷拍小说区、成都麻羊(n=20)、藏山羊(n=27)日本一区,二区,三区AⅤ视频、金堂黑山羊(n=21)99热精品区、樂至黑山羊(n=24)和北川白山羊(n=26)及1個培育品種—南江黃羊(n=90)的基因組DNA進(jìn)行PCR擴(kuò)增，并進(jìn)行電泳分析狼友视频在线的。

Three novel hemicyanine derivatives,-N-(4-sulfopropyl)-4-[2-(4- N, N-diethylaminophenyl)-ethenyl]pyridinium,-N-(4-suMbbutyl)- 4-[2-(4-N, N-diethylaminophenyl)ethenyl]pyridinium (EPS4), and-N-(4- su)fobutyl-4-[2-(4-N, N-diethylaminophenyl)ethenyl]quinolinium (EQS4) with different length of alkyl chains between the adsorbing group (RSO3-) and the chromophore group, were synthesized and their photophysical and photoelectrochemical properties were studied.

設(shè)計合成了具有不同空間位阻的吡啶鹽類和喹啉鹽類半菁染料-N-(4—磺酸根丙基)-4-[2-4（4-N女人扒开腿让男人桶白浆动态视频，N-二乙基氨基苯基）乙烯基]吡啶鎓鹽，-N-4-磺酸根丁基）-4-[2-(4-N男人网站在线观看网站不卡，N-二乙氨基苯基）乙烯基]吡啶鎓鹽（EPS4）和-N-（4-磺酸根丁基）-4-2-（4-N天天摸天天，N-二乙基氨基苯基）喹啉鎓鹽（EQS4）免费观看黄网站不卡影院视频，研究了它們的光物理性質(zhì)，并將它們用作TiO2納米晶電極的光敏化劑引入光電化學(xué)電池中国产激情无码aⅴ视频。

In this paper, firstly using natural fatty acids including lauric acid, myristic acid, palmitic acid etc. and disproportionated rosin as starting materials, the acyl reaction of starting materials with SOCl_2 respectively, and then using Schotten-Baumann condensation: on the reaction conditions of alkalescence, condensation of acylchloride with amino acid (sarcosine, glycine, alanine etc.), and then acidification, saltation. A series of anionic surfactants of N-acyl amino: sodium N-fatty acyl sarcosinate (SFS-12, SFS-14, SFS-16); sodiun N-fatty acyl glycinate(SFG-12, SFG-14, SFG-16); sodium N-fatty acyl alaninate(SFA-12, SFA-14, SFA-16)and sodium N-disproportionated rosinoyl aminatewere prepared. During the preparation of N-acylamino acid, the reaction conditions of acylchloride with amino acid condensation were identified by optimizing the synthetic conditions of N-lauroyl sarcosine: mol ratio of amino acid to acylchloride 2:1, reaction taken place in a solvent composed by acetone/water 2:1, acylchloride and 20% NaOH were slowly added to the reaction mixture at the same time while maintaining the pH at 9~10, after completion of adding maintaining reacting for 2.5h at 25℃.

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