本文通过使用相转移催化剂来提高壳聚糖的脱乙酰度，使用过氧化氢降解法降低壳聚糖的分子量。
We used phase transfer catalyst to improve the deacetylation of Chitosan, and the hydrogen peroxide degradation to reduce the molecular of Chitosan.
采用正丁醇-氢氧化钠反应体系，以十六烷基三甲基溴化铵为相转移催化剂，制得脱乙酰度为92%的壳聚糖。
The chitosan was prepared with 92% deacetylation degree using n-butanol and sodium hydroxide as a reaction medium and cetyltrimethylammonium bromide as a phase transfer catalyst.
本文报导了取代芳腈氧化物和对乙酰氨基苯磺酰胺的加成反应。
The addition reaction of substituted phenyl nitrile oxide and p-Acetaminobenzenesulfamide were reported.
实验表明大多数水解单宁具有很高的抗氧化活性，而乙酰化的黄酮甙抗氧化活性很低。
Hydrolysable tannins showed much more effective antioxidant activity in DPPH assay while acetylated kaempferol glycosides displayed very low activity.
本文用苯乙酰肼与苯基异硫氰酸酯在微波辐射下以氧化铝为介质进行反应，合成1 苯乙酰基4 苯基氨基硫脲；
This paper reports the synthesis of 1 phenylacetyl 4 phenyl thiosemicarbazide from phenylacetyl hydrazine and phenyl isothiocyanate with aluminium oxide as a surpport under microwave irradiation.
目的探讨抗氧化剂N -乙酰半胱氨酸（NAC）对急慢性吸烟大鼠气道炎症的影响。
Objective To assess the effect of N-acetylcysteine (NAC, antioxidant) on the airway inflammation in rats with acute and chronic smoking.
就乙酰氨基酚如何作为一种毒性代谢产物而导致肝脏损伤的机制而言，是因为咖啡因抑制了肝内抗氧化剂，从而才增强了对乙酰氨基酚的毒性。
In terms of how acetaminophen causes damage and being a toxic metabolite, the things that would promote acetaminophen toxicity are things that inhibit antioxidants in the liver.
本论文的主要工作是基于等离子体聚合膜的优良性质，构建电位型的乙酰胆碱酯酶生物传感器和电流型的过氧化氢生物传感器。
In this paper, a potentiometric acetylcholinesterase biosensor and two kinds of ampermetric hydrogen peroxide biosensors have been developed based on plasma polymerized film.
乙酰半胱氨酸(NAC)为谷胱甘肽的前体，是一种含有巯基的抗氧化剂。
N acetylcysteine (NAC), a precursor of glutathione, is a thiol antioxidant.
本论文研究了硫辛酸和N -乙酰半胱氨酸对高脂日粮大鼠机体抗氧化能力和血脂代谢的影响，并初步探讨了其降血脂作用机理。
In present study aimed at determination the effects of Lipoic acid (LA) and N-acetylcysteine (NAC) on blood lipid and antioxidant metabolism of rats fed high-fat diet.
所述基质可以包括胶原蛋白、脱乙酰壳多糖或氧化再生纤维素，并且所述染料例如为苯胺或吖啶染料。
The substrate may comprise collagen, chitosan or oxidized regenerated cellulose, and the dyestuff may for example be an aniline or acridine dye.
鉴于大黄酚具有大黄酸分子的基本母核，本文以植物中大黄酚为起始原料，经乙酰化、氧化和脱乙酰反应后制得大黄酸。
Seeing that Chrysophanol has the same basic parent structure with Rhein, Rhein was synthesized through acetylation, oxidation and deacetylation reaction taking Chrysophanol as raw material.
在该项检测中，乙酰胆碱被乙酰胆碱脂酶水解成胆碱，而胆碱又被胆碱氧化酶氧化成甜菜碱和H2O2。
In this assay, acetylcholine is hydrolyzed by acetylcholinesterase to choline which is oxidized by choline oxidase to betaine and H2O2.
在连续流动固定床反应器上，以氧气为氧源，活性炭作为催化剂用于催化氧化三氟二氯乙烷（HCFC-123）制备三氟乙酰氯（TFAC）的反应中。
Activated carbon was used as the catalyst for catalytic oxidation of 1,1-dichloro-2,2,2-trifluoroethane(HCFC-123) to trifluoroacetyl chloride(TFAC) in fixed bed reactor.
最后，凝结(四)2-(4 -羟苯基)乙酰胺(五)的方式在氢氧化钾甲醇给人的理想产品。
Finally, condensation of (iv) with 2 - (4-hydroxyphenyl) acetamide (v) by means of KOH in MeOH gives the desired product.
介绍了用乙酰丙酮和三氧化二铁在催化剂的存在下合成乙酰丙酮铁的一种新方法。
The article introduced a novel synthesis method of acetylacetone iron which was synthesized by acetylacetone and Fe 2o 3 in presence of catalyst.
我们使用高价有机碘试剂（PIFA）做氧化剂，实现了N-乙酰基吲哚与芳香化合物的直接偶联反应，得到了吲哚3号位高选择性的偶联产物。
In the presence of hypervalent iodine reagents (PIFA), Direct coupling reaction of N-acetyl-indole with aromatic compounds provided C-3 arylated indoles in high regioselectivity.
我们使用高价有机碘试剂（PIFA）做氧化剂，实现了N-乙酰基吲哚与芳香化合物的直接偶联反应，得到了吲哚3号位高选择性的偶联产物。
In the presence of hypervalent iodine reagents (PIFA), Direct coupling reaction of N-acetyl-indole with aromatic compounds provided C-3 arylated indoles in high regioselectivity.
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