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。
A novel ring - enlargement oxidation of polyphenyl substituted cyclopentadienes in air ( or molecular oxygen ) promoted by perchloric acid was described, in which an oxygen atom was inserted into the cyclopentadiene - ring, forming a six - membered pyrylium salts
摘要報導了空氣（或氧氣）存在的條件下，由高氯酸引發多苯
基取代環
戊二
烯發生新穎的碳碳鍵斷裂擴環反應，在此反應中，氧原子插人到環
戊二
烯環中形成相應的六元環吡喃鹽類化合物。
Ppsa and tkta are the key genes in central metabolism of aromatic amino acids biosynthesis. ppsa encoding phosphoenolpyrucate synthetase a ( ppsa ) which catalyzes pyruvate into pep ; tkta encoding transketolase a which plays a major role in erythrose - 4 - phosphate ( e4p ) production of pentose pathway
Ppsa
基因編碼磷酸
烯醇式丙酮酸合成酶a （ ppsa ） ，該酶催化丙酮酸合成磷酸
烯醇式丙酮酸； tkta
基因編碼轉酮酶a ，該酶在磷酸
戊糖途徑中生成4 -磷酸赤蘚糖起主要作用。
It was confirmed that the key enzyme of coq10 synthesis is p - hydroxybenzoate polyprenyltransferase, encoded by gene ubia in e. coli and lacks specificity to the aggregation length of its substrate ( polyisoprenyl pyrophosphate ). if gene ubia can be introduced into psb and is high expression in psb, a recombinant strain producing coq10 could be obtained. consequently, the productive cost will decrease sharply
業已證實coq _ （ 10 ）生物合成的關鍵酶為對羥
基苯甲酸聚異
戊二
烯焦磷酸轉移酶（在大腸桿菌中該酶由ubia
基因編碼） ，該類酶對底物聚異
戊二
烯焦磷酸（ ppp ）的聚合長度並無特殊要求。
Synthetic methods of inducing prenyl into aromatic nucleus with basic condition
堿性條件下芳環上碳代異
戊烯基的方法研究
Resistance would be developed when the activities of any of these three enzymes are increased. the three insecticide target - sites are acetylcholinesterase ( ache ) for organophosphate and carbamate insecticides, voltage - gated sodium channels : knockdown resistance ( kdr or kdr - type ) for ddt & pyrethroids and y - aminobutyric acid ( gaba ) receptors for cyclodienes
殺蟲劑的作用靶標主要有：有機磷和氨
基甲酸酯殺蟲劑的作用靶標?乙酰膽堿酯酶； ddt和擬除蟲菊酯類殺蟲劑的作用靶標?神經軸突鈉離子通道；環
戊二
烯類和吡唑類等殺蟲劑的作用靶標? -氨
基丁酸（ gaba ）受體-氯離子通道復合體。
Phase separation ( nonsolvent induced phase separation, spreading solution on water surface and so on ), melt stretch, thermally induced phase separation are included
重點介紹了聚4 -甲
基1 -
戊烯微孔膜各種制備方法的原理、過程、影響因素和膜的結構特點。
Polymethylpentene could be good membrane materials because of it ' s excellent properties
摘要聚4 -甲
基1 -
戊烯有很多優良的性能，具有作為優質膜材料的潛能。
Materials and articles in contact with foodstuffs - plastics substances subject to limitation - determination of 4 - methyl - 1 - pentene in food simulants
與食品接觸的材料和物品.受限制的塑料物質.食品模擬物中4 -甲基- 1 -戊烯的測定
