The present work indicates the organic nf membranes and the inorganic nf membranes all have shortages, so develop composite nf membranes that have low cost, mechanically strong and thermally / chemically - resistant, easy to cleanout and good performances is a very important task. in this paper, the preparation of inorganic - organic composite nf membranes were presented. this composite comprise a porous sio2 / al2o3 support substrate, the pore diameters of which ranging from 10 to 15 nm, this inorganic support substrate having a polymer membrane which comprises an polyvinyl alcohol ( pva ) or polyamide ( pa ) densely deposited on at least one of the face surfaces thereof, the structural porosity of such pva and pa membrane ranging from 3 to 5 nm
本論文以開發無機?有機復合納濾膜為出發點，首先在al _ 2o _ 3多孔微濾膜上利用溶膠?凝膠法制備sio _ 2 al _ 2o _ 3無機復合超濾膜作為無機?有機復合納濾膜的基膜；選用聚乙烯醇和聚
酰胺為表面功能層材料，分別探討了以羥基
丁二酸和磺基水楊酸為混合交聯劑，採用浸塗法制備了聚乙烯醇sio _ 2 ? al _ 2o _ 3復合納濾膜；以均苯二甲
酰氯、哌嗪和二胺為單體，採用界面聚合法制備了聚
酰胺sio _ 2 ? al _ 2o _ 3復合納濾膜，並對影響膜性能的諸多因素進行系統研究。
First, a terminal double bond was introduced into 3 - amino - 9 - ethylcarbazole ( aec ) via methacryloyl chloride to obtain the compound, 3 - ( n - methacryloyl ) amino - 9 - ethylcarbazole ( mec ). second, mec was copolymerized with butyl methacrylate to prepare the mec - immobilized polymer particles. the resultant polymer particles were used as a fluorescence probe, which was almost free of dye leaching, and had higher photostability in comparison with free aec
首先利用甲基丙烯
酰氯向3 -氨基- 9 -乙基咔唑（ aec ）分子中引入末端雙鍵，得到帶末端雙鍵的熒光指示劑3 - （ n -甲基丙烯
酰基）氨基- 9 -乙基咔唑（ mec ） ，然後通過乳液聚合技術將mec共價固定到聚甲基丙烯酸
丁酯基體上，制得一種共價固定了mec的聚合物顆粒。
Tao feng changzhou chemical company located in the jiangsu international plastics city, is in changzhou city, the river additives ltd. and jurong city tao reagent production plant product sales window, the major products : toluene, pure benzene, xylene, n - octanol, ethyl acetate, acetic acid small fat, silicone oil, aniline, poly - succinimide, benzene triazole derivatives, isopropanolamine, ethanolamine, alkylation two aniline, scale inhibitor, promoting agents, antioxidants, ppd, defoamer, metal deactivator, hx - 3308 scale and corrosion inhibitor, hx03 - 12 diesel flow improver, parathion octyl - zinc chloride bridge acid, chlorine bridge anhydride, chlorobenzene, double - dicyclopentadiene, norbornene anhydride
常州濤峰化工有限公司座落在江蘇國際塑化城，是常州市夏溪助劑有限公司和句容市龍濤試劑廠生產的產品的銷售窗口，主要經營產品：甲苯、純苯、二甲苯、辛醇、乙酸乙脂、乙酸
丁脂、硅油、二苯胺、雙聚
丁二
酰亞胺、苯三唑衍生物、異丙醇胺、乙醇胺、烷基二苯胺、防垢劑、促進劑、抗氧劑、降凝劑、消泡劑、金屬鈍化劑、 hx - 3308阻垢緩蝕劑、 hx03 - 12柴油流動改進劑、硫磷
丁辛基鋅鹽、氯橋酸、氯橋酸酐、氯苯、雙聚環戊二烯、降冰片烯二酸酐等。
Chitosan is the product of partial deacetylation of chitin they are the second most abundant polysaccharides in nature, comprising the horny substance in the exoskeletons of crabs, shrimp, and insects as well as fungi
背景和目的幾
丁質是由n -乙
酰葡萄糖胺組成的多糖，它是世界上除纖維素之外含量最豐富的天然多聚物。
Abstract : methanesulfonic acid method was used to prepare five acylated chitins. except heptanoyl chitin, four of them, i. e. acetyl chitin, propionyl chitin, butyryl chitin and hexanoyl chitin, had high degree of substitution ( from 1. 5 to 2. 0 ) and exhibited lyotropic liquid crystalline behavior and cholesteric phase. as the length of the side chain increased the critical concentration ( w / w ) somewhat increased from 0. 21 to 0. 26 because the chain rigidity dropped. the critical concentration values of all the four derivatives were much higher than that of chitin ( 0. 12 ) due to the decrease of intramolecular hydrogen bonds. the four acylated chitin can form typical banded texture after being sheared. there minimum concentrations to form banded texture of them were evidently different, varied from 0. 25 ( for acetyl chitin ) to 0. 37 ( for hexanoyl chitin ). these results further indicated that liquid crystallinity decreased while the length of flexible side substituents increased
文摘:四種羧
酰化甲殼素即乙
酰化、丙
酰化、
丁酰化和己
酰化甲殼素在二氯乙酸溶液中均呈現膽甾型溶致液晶相.臨界濃度隨側基長度增加而略有增加，衍生物的臨界濃度明顯都比原甲殼素高許多，這些規律都可以用鏈剛性的變化來解釋.四種羧
酰化甲殼素在剪切時均能形成條帶織構，而且能形成條帶織構的最低濃度有明顯差別，隨側基長度增加而提高，進一步表明側基較長，液晶性減少
Aacetosyringone, at a cpncenration of 100 mol / l, also improves transformation efficiency
100 mol l的乙
酰丁香酮（ as ）可提高大巖桐的轉化效率。
The path - way controlling of neptunium in co - decontamination step of purex process, the extraction thermodynamics of amido podand and its usage in recovery of actinides from simulated hllw have been investigated. more than 95 % np were maintained in np ( v ) in 1a extractor and flowed into 1 aw, if enough amount of hno2 was added in feed adjustment and then hno2 scavenger ( urea ) was added before extraction. three kinds of amido podand were synthesized, and the extraction of lanthanides, actinides and some fission products were studied. one of them ( tbopda, n, n, n ', n " - tetrabutyl - 3 - oxa - pantenadiamide ) was used as extractant to recover actinides from hllw. the results of experiments show that more than 99. 99 % actinides were recovered from hllw and separated basically in groups. the main digests are as follows : 1
鎿走向控制研究中通過調價階段加入亞硝酸、而萃取前清除亞硝酸的獨特辦法可以將大於95的鎿趕入1aw 。合成了三種
酰胺莢醚萃取劑，研究了它們對錒系和裂片元素的萃取熱力學，通過條件實驗選擇了其中一種莢醚tbopda （ n ， n ， n 』 ， n 』 ?四
丁基? 3 ?氧戊二
酰胺） ，進行了從模擬高放廢液中分離錒鑭系元素的工藝研究，錒系的回收率大於99 . 99 ，並且基本上實現了錒鑭元素的組分離。其要點如下： 1
Its headquarter is located at xinkailu no. 8, xuanhua district of zhangjiakou city. its main products include ziyun brand civil explosive products series : powdery ammonium nitrate explosive emulsion explosive industrial fuse ; ziyun brand fine chemical products series : glyoxalic acid 5 - 4 - hydroxyphenyl hydantoin p - hydroxyphenylacetic acid p - hydroxyphenylacetamide allantoin daidzein bufexamac ; aaa brand fine chemical products series : ethylamine methanol trimethylacetic acid tert - valeryl chloride ; great wall brand agricultural chemical fertilizer products series : ammonia urea ammonium bicarbonate ; chenguang brand calium carbide chenguang brand acetylene carbon black xuguang brand dissolved acetylene ; and the others as sulphur ammoina liquor oxygen nitrogen, etc.
公司現有主要產品為，紫雲牌民爆產品系列：粉狀硝銨炸藥乳化炸藥工業導火索紫雲牌精細化工產品系列：乙醛酸對羥基苯海因對羥基苯乙酸對羥基苯乙
酰胺尿囊素大豆甙元
丁苯羥酸三a牌精細化工產品系列：乙基胺甲醇特戊酸特戊
酰氯長城牌農化產品系列：合成氨尿素碳銨晨光牌電石，乙炔炭黑旭光牌溶解乙炔。
Butyl acetyl ricinoleate
乙
酰蓖酸
丁酯
Acetyl butyl ricinoleate
乙
酰蓖麻酸
丁酯
Main apis, such as spiramycin, spiramycin adipate, spiramycin embonate, acetylspiramycin, erythromycin thiocyanate, alprazolam, troxerutin, have been very popular in domestic market and exported to more than 30 countries and areas in europe, southeast asia, middle - east, north africa, and south america
主要原料藥螺旋黴素，己二酸螺旋黴素，恩波酸螺旋黴素，乙
酰螺旋黴素，硫氰酸紅黴素，阿普唑侖，曲克蘆
丁等熱銷國內並已出口到歐洲，東南亞，中東，北非和南美。
Study on inhibitory effects of flutamide on hyperplasia of prostate in rats
氟硝
丁酰胺抑制大鼠前列腺增生的作用
An excellent adhesive was prepared from bismaleimide ( bmi ), epoxy resin ( e - 51 and tde - 85 ), 4, 4 ' - diaminodiphenyl sulfone ( dds ) in this thesis. the influence of liquid rubber and polymer ether imide ( pei ) on the properties ( especially high - temperature strength and the peeling strength ) were discussed, their different toughening characteristics and mechanisms were discussed. last, the process and effection of heat - resisted structural adhesive were studied by adhesive experiment of synchronizer in automobile. the results of investigation made clear : the adhesive, has good properties, especially heat - resisted properity
根據材料分子設計的原理，研究了二苯甲烷雙馬來
酰亞胺（ bmi ） 4 ， 4 』 ?二胺基二苯基碸（ dds ） e ? 51 tde ? 85組成的環氧膠粘劑體系，研究該體系在作為高溫結構膠粘劑使用時的粘接性能；然後研究了用無規羧基液體
丁腈橡膠（ ctbn ? x ）和聚醚
酰亞胺（ pei ）分別來增韌該體系的增韌效果；最後通過碳纖維耐磨材料與同步器圓錐環的粘接實驗，研究了耐高溫結構膠粘劑的粘接工藝和使用效果。
Chitin ' s partially deacetylated product is chitosan. unlike these polysaccharides, chitooligosaccharide and oligochitosan, which are the oligomer homologs of chitin or chitosan, are soluble and can be satisfactorily utilized
幾
丁質部分脫乙
酰化產物是殼聚糖，它們的降解產物為幾
丁寡糖、殼寡糖，具有較好的水溶性，易於分散吸收。
Method for determination of daminozide residues in oil seeds for export. spectrophotometric method
出口油籽中
丁酰肼殘留量檢驗方法.分光光度法
Twenty - six induced proteins were analyzed by matrix assisted laser desorption / ionization time - of - flight mass spectrometry ( maldi - tof / ms ) and identified by database searching. among them, 20 ones were assigned and their functions were known, including salt stress proteins, or enzymes are related to salt stress, y - butyrobetaine and iipopolysaccharide synthesis, metabolism pathway and signal transduction
應用maldi - tof ms對26個鹽激誘導蛋白進行分析，將獲得的肽指紋圖譜經數據庫檢索，初步確定了20個誘導蛋白的功能，其中包括與鹽脅迫、 -丁酰甜菜堿、脂多糖合成、代謝途徑和信號傳導等有關的酶。
