The drawbacks of the synthesis process are analyzed and the suggestion for improvement on the peracetic acid synthesis is also presented.

分析了合成工藝的缺陷并提出了工藝改進的建議。

The drawbacks of the synthesis process are analyzed and the suggestion for improvement on the peracetic acid synthesis is also presented.

指出過氧乙酸的重要作用除了其廣譜殺菌能力外，更體現(xiàn)在合成化學(xué)與工業(yè)領(lǐng)域的各類特殊氧化反應(yīng)中自拍视频网。

Moreover, seven ruthenium phenanthroline derivatives were also synthesized. The synthesis of Ru3Cl2 and Ru2AqphenCl2 have not yet been reported, and a new and effective method for the synthesis of Ru32 was also investigated.

本文第二章主要內(nèi)容是以鄰菲咯啉為原料色哟哟最新网站入口，合成四種剛性結(jié)構(gòu)強的鄰菲咯啉衍生物：二吡啶基吩嗪，四吡啶基吩嗪www.9999高清黄色， 10.11-1.4-萘酮－2猛男好爽好爽男人天堂，3；2'国产性爱一级视频，3'－二吡啶基吩嗪久久不用播放器的一级片，對羥基苯基并[4，5]-鄰菲咯啉浮力国产第三页草草影院。

The total synthese three natural compounds to explore enantioselective synthesis of flavanol: We use phloroglucin and 2, 4, 6-trihydroxyacetophone as starting materials to synthesis distenin in two ways; Resorcin was used to synthsis 2, 5-dimethoxymethoxyacetophone though 3 steps.

對黃烷醇化合物的立體選擇性全合成進行了探索：以間苯三酚和2十八岁以下禁看黄，4，6-三羥基苯乙酮為原料欧美性色欧美A在线播放秒播，嘗試用兩條路線對Distenin化合物進行了全合成研究最新欧美精品免费A片在线播放；以對苯二酚為原料，經(jīng)三步制得2岛国艹在线，5-二甲氧甲氧基苯乙酮91大神在线一区二区播放，與2，4黄色视频毛片在线看，6-三甲氧甲氧基苯甲醛反應(yīng)老女人一级特黄大片，經(jīng)四步反應(yīng)得到天然產(chǎn)物3，5ri99av，7一级毛片,黄片，2′，5′-二五羥基黃烷關(guān)鍵中間體1-（2′国家一级无码黄片，6′-二甲氧甲氧基苯）-3-（2&欧美性人妖XXXXⅩ极品，4&，6-三甲氧甲氧基苯）丙烷-1R亚洲免费人成视频观看，2R-二醇83及其對映體84国产人人夜夜；簡要介紹了EGCg類化合物的生物活性和研究概況。

Both Fas and NO can lead chondrocyte apoptosis respectively and cause articular cartilage destruction. IGF-Ⅰ, TGF-β, bFGF, BMP and other growth factors are polypeptide agents that can influence cell activity by signal convection. They can accelerate chondrocyte proliferation and proteoglycan synthesis, play the local regulation action on formation and plerosis of bone and cartilage tissue by autocrine or paracrine. They have the ability to induce cartilage formation. Some investigations showed that growth factors can influence chondrocyte metabolism, synthesis of specific Ⅱ type collagen and proteoglycan by co-operation and inhibition. 1. 3 Situation of OA therapeutics The therapeutic methods of OA mainly comprised non-drug treatment, drug treatment, operation treatment, tissue and genetic engineering, et al. Drug treatment is the chief method among them.

若其活性發(fā)生改變欧美一区2区三区3区公司，則將導(dǎo)致關(guān)節(jié)軟骨基質(zhì)成分的丟失和進行性破壞中国农村特级黄色视频；軟骨細胞凋亡與OA的發(fā)病密切相關(guān)，F(xiàn)as與NO可各自獨立介導(dǎo)軟骨細胞凋亡中国熟妇乱XXXXX，造成關(guān)節(jié)軟骨破壞最新最大最全偷拍二区；IGF-Ⅰ、TGF-β亚洲欧美一区二区啪啪啪、bFGF强奸视频网站在线观看高清无码、BMP等生長因子是一組通過細胞間信號傳遞影響細胞活動的多肽因子最新偷窥盗摄wang网，具有促進細胞生長、增殖與合成等作用黄色视频海外免费，可通過自分泌或旁分泌方式對骨和軟骨的形成和修復(fù)起局部調(diào)節(jié)作用免费无码毛片A视频，可促進軟骨細胞增殖、分化與蛋白多糖的合成97人人模人人妻人人添，具有較強的誘導(dǎo)軟骨形成的能力GIAO视频免费观看，研究表明多種生長因子相互促進、相互抑制国产三级电影免费，以協(xié)同或拮抗方式影響軟骨細胞代謝在线看自拍，影響軟骨細胞特異性Ⅱ型膠原和蛋白多糖的合成分泌。

Total synthesis of bilobetin and isoginkgetin, natural polyhydroxy biflavones with a Ⅰ-3'/Ⅱ-8 dissymetrical connection, and synthesis of acetyl flavones were investigated in this dissertation.

本論文對天然多羥基不對稱連接的雙黃酮-白果素欧美一级A片免弗看、異銀杏素的合成以及乙跻患痘粕悠滴蘼耄基黃酮的合成進行了研究，共包括以下內(nèi)容

Synthesizing new compounds are always the goal of chemist. Recent ly, the progress of the hydrothermal synthesis method is giving a new method to synthesize new compounds. The hydrothermal synthesis method is prefectly applied to synthesizing the tunnling materials, micro-and meso-porous mat erials as well as some new materials, so this method obtained the intrest of che mist.

中文題名含有雜原子的金屬－氧簇(Vjizz污污视频免费看，Mo免费看操，W，P激情小说在线视频观看，As)的合成與結(jié)構(gòu)副題名外文題名論文作者李亞豐導(dǎo)師裘式綸教授學(xué)科專業(yè)無機化學(xué)研究領(lǐng)域\研究方向?qū)W位級別博士學(xué)位授予單位吉林大學(xué)學(xué)位授予日期2002 論文頁碼總數(shù)70欧美操大黑逼片，68頁關(guān)鍵詞金屬－氧簇化學(xué)多酸化學(xué)無機合成化學(xué)館藏號BSLW /2003 /O611 /3 合成新結(jié)構(gòu)和新組成的化合物一直是化學(xué)家們的目標(biāo)，近代水熱合成技術(shù)的發(fā)展為合成親新化合物提供了一種新的方法国产主播在线播放，水熱由于在合成具有孔道結(jié)構(gòu)午夜日韩福在线播放、微介孔材料以及一其它一些新型材料具有其它方法無可比擬的優(yōu)越性欧美喷浆，因此玖玖玖在线资源，越來越受到人們的重視。

The results of protein synthesis of NT embryos indicated that the protein synthesis pattern of NT embryos and fertilized eggs was similar. 19. 2 KD protein existed in 32-cell stage donor embryos disappeared in NT embryos at the pronuclear stage, however, this protein was reprogrammed to reappeared in 32-cell stage NT embryos.

七免费可以直接看黄视频网站、核移植胚的蛋白合成分析結(jié)果表明www.9色色，原核期核移植胚與原核期受精卵具有相同的合成模式。32-細胞期供體胚中的19.5KD蛋白在原核期重組胚中消失在线无码国产观看播放网址，而在32-細胞期重組胚中再度出現(xiàn)久久久精品合，發(fā)生了蛋白合成的重序過程。

In the third chapter, the synthesis of5-[(1"S)-1",2"-diacetyl-oxyethyl]-1-phenylpyrazol-3-carboxaldehyde oxime(2) from5-[(1"S)-1",2"-diacetyl-oxyethyl]-1-phenylpyrazol-3-carboxaldehyde(1) and phenyl-hydrazine were introduced firstly. The synthesis of nine dioxapyrrolino[3,4-c]pyrazoles containing chiral pyrazolyl moiety(6a-i) from 2 with N-substituted-phenylmaleimide by nonmetal oxidant IBD-initiated intermolecular 1,3-dipolarcycloaddition was described in detail.

第三章首先以5-[(1′S)-1′2019年一级黄片，2′-二乙酰氧基乙基]-1-苯基吡唑-3-醛(1)和苯肼為原料国产一级α爱免费视频，合成了化合物5-(1′S)-1′，2′-二乙酰氧基乙基1-1-苯基吡唑-3-醛-苯腙(2)欧美丝袜A∨在线一区二区三区；再用化合物(2)與N-取代苯基馬來酰亞胺反應(yīng)久操视频福利在线，利用無金屬氧化劑—IBD引發(fā)1，3-偶極反應(yīng)加勒比官网中文在线，發(fā)生分子間的環(huán)加成日韩精品理论片在线观看，合成了9種新型手性吡唑連二氧代吡咯啉并

Synthesis of PPA are intermediate ester methoxy-pyrimidine main raw material; for quinoline acid synthesis; are prepared quinolones (such as: Pipemidic, Ciprofloxacin quinolinic acid, such as containing the quinolone drugs) of raw materials; also are manufacturing and other chemical products dyes intermediates.

是合成PPA的中間體甲氧基嘧啶酯的主要原料免费亚洲爱爱视频；用于喹啉酮酸的合成；是制備喹諾酮類藥物(如：吡哌酸欧美黑人大屌视频、環(huán)丙氟哌酸等含喹啉酮酸的喹諾類藥物)的原料韩国日本国产欧美一区二区；亦是制造染料及其他化工產(chǎn)品的中間體。