查询词典 scavenger

Extracts of Myrtus communis Linn.are effective, multifunctional natural antioxidants and radical scavenger, and are the natural products worthy of further exploitation and utilization.

香桃木叶非精油组分是有效的、多功能的天然抗氧化剂和自由基清除剂，具有综合开发利用的价值。

Chronicity maybe result from many factors with complex mechanism.HCV may evade the host immune surveillance due to the hypermutation of HCV gene; HCV has the nature of pantropic,the tissues outside liver can provide virus for repeatedly infection of liver; The HCV receptors,such as CD81,LDL receptor,scavenger receptor B type I,L-SIGN,DC-SIGN and so on,may influence organism humoral immunity and the cellular immunity function in different degrees; HCV infection also may cause the reduction of quantity of organism immune cell or functional defect,low response of humoral immune response,tolerance of cellular immunity,then,the host finally transforms into chronic infection condition.

其慢性化的机制非常复杂，是由多个因素造成的，HCV因其基因高变性可以逃避宿主的免疫监视；HCV具有泛嗜性，肝外组织又可为肝组织的反复感染提供病毒来源；CD81、LDL受体、清道夫受体B类Ⅰ型及L-SIGN、DC-SIGN等HCV受体又可不同程度地影响机体的体液免疫和细胞免疫功能；HCV感染亦可直接导致机体免疫细胞数量减少或功能缺陷，体液免疫应答水平低下、细胞免疫耐受，宿主最终转变为慢性感染状态。

Potent scavenger of superoxide and peroxyl radicals.

有效的超氧和过氧自由基清除剂。

FIZZ1 had no effect on the expression of scavenger receptor CD36 in cultured macrophages. FIZZ1 can promote the development of AS by the up-regulation of the expression of SR-A and the phagocytose of fatty substance in VSMCs.

FIZZ1不影响体外培养的巨噬细胞清道夫受体CD36的表达，FIZZ1能促进ox-LDL诱导的体外培养的平滑肌细胞SR-A表达，从而可能加速平滑肌细胞吞噬脂质，促进动脉粥样硬化进展。

At the same time, His, a specific scavenger of singlet oxygen, can remarkably inhibit the degree of destruction of photoinhibition on the components of PS Ⅱ.

同时，加入单线态氧的特异性清除剂组氨酸可明显遏制光抑制处理对PSⅡ各组分的破坏，这些结果说明单线态氧参与了PSⅡ的光破坏过程

The synthetic route starts from penicillin G, peroxyacetic acid(8.5%) as Oxidizing Agent to get penicillin G sulfoxide; esterifided with p-nitrobenzyl bromine to synthesize penicillin G sulfoxide ester; we synthesize 3-exomethylenecepham sulfoxide ester with phthalimide potassium and 4A molecular sieve as acid scavenger to open the ring, SnCl_4 as catalyzation to close the ring. The yield is over 60%.

本研究采用的合成路线为：以青霉素G钾盐为原料，选用工业过氧化氢制备的过氧乙酸(22.3%)稀释至8.5%为氧化剂，氧化得青霉素亚砜；采用对硝基溴苄为酯化试剂，制备青霉素亚砜酯；以NCP(N-氯代邻苯二甲酰亚胺)为开环试剂，酞酰亚胺钾和4A型分子筛为酸清除剂，顺利开环；再经无水SnCl_4催化闭环得3-环外亚甲基头孢亚砜酯，最终产率在60%以上。

Content : The definition and classification of functional food;The development and management of functional food;The functional compositions of food eg., polysaccharose、functional sweetner、functional lipid、free radical scavenger、probiosis、conditional essential amino acid、active peptide and protein etc.;The evaluation of functional food.

课程内容：功能食品的定义和分类；功能食品的发展和管理状况；食品的功效成分如：多糖、功能性甜味剂、功能性油脂、自由基清除剂、益生菌、条件性必需氨基酸、活性肽和蛋白质等；功能食品的功效评价。

The results indicated that the DNA damage could be accelerated by Fenton reaction in the presence of ascorbic acid but was inhibited slightly by hydroxyl free radical scavenger such as mannitol or dimethyl sulphoxide under the experimental conditions.

试验结果显示，抗坏血酸存在时可以加速Fenton反应对DNA的损伤，而在同样条件下，自由基捕获剂甘露醇或二甲基亚砜对由Fenton反应造成的DNA损伤的抑制作用却不是很大。

One of these factors encases the vegetative cells in a polymer capsule that inhibits ingestion by the immune system's macrophages and neutrophils—the scavenger cells that normally degrade disease-causing bacteria.

其中一个因子会把繁殖生长型细胞包在聚合物组成的荚膜里，以抑制巨噬细胞与嗜中性白血球的吞噬作用（上述这两种细胞是免疫系统的清道夫，可消灭致病细菌）。

This is believed to be conneeted with the depletion of Mo, a scavenger of P, in matrix due to the Mo tithed carbides formation during preaging. Therefore, more P is released and segregated to grain boundaries. Carbide coarsening perhaps contributed to the increment in transition temperature too.

Mo可抑制磷的偏析，但因时效过程中富Mo碳化物的生成和长大，使基体中Mo的含量降低，因此，磷从Mo的&束缚&下&解放&出来并偏析到晶界，使脆性转变温度升高，此外，碳化物的粗化也可能导致脆性转变温度升高。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。