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nature source
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  自然源
     The analytical results testified that grain size of aerolion dust can be divided into different two group of grain size, namely, partculate from industrical pollution are most smaller than 10 μ ms and the bigger grain are mainly from nature source of sandy dust.
     结果证明,降尘可以分为大小明显的两群,小于10μm的颗粒物以工业污染的产物为主,较大颗粒主要为自然源沙尘。
短句来源
  天然来源
     Taxol is a new kind of anti-cancer medicine having assured curative effect,but its nature source——Taxus are very exiguous and close to deracinate.
     紫杉醇是疗效确切的抗癌新药,但其天然来源——红豆杉物种稀少,濒临灭绝。
短句来源
     Because the relative coefficient (r) between the agents from nature source, such as ADM, MMC and VCR, were larger (r=0 5539~0 7208) at either 1 PPC or 5 PPC, it is shown that some of hepatomas were multidrug resistant.
     结论 结果提示 MMC对肝癌抑制作用较强 ,DDP和 TSPA剂量增加与疗效提高可能有较大的关系。 天然来源的药物 ADM、MMC和 VCR之间 ,无论在 1PPC或 5 PPC水平 ,其相关系数均较大 (r=0 .5 5 39~0 .72 0 8) ,表明部分肝癌具有多药耐药性
短句来源
  “nature source”译为未确定词的双语例句
     Characteristics of marine nature source by real data show in fellow: (1) marine nature source is affected not only by high conduction seawater but also by seawater moving(noisy frequency of this measurement: 0.084hz, 0.75hz,
     通过实测数据研究了海底大地电磁场具有如下的特征:(1)在海底大地电磁场不仅要受到高导海水影响,还要受到海水运动的干扰(本次观测受到的周期噪声干扰频率为:0.O84Hz,0.75Hz, 1.4Hz);
短句来源
     This paper attempt to study the question of nature, source, distinguishing of the homonym and same problems in the Chinese information processing.
     本文试图就同音词的性质、来源、分化问题和在中文信息处理中的一些问题进行研究。
短句来源
     This thesis makes an introduction of the safety-guard obligation of other countries' law and discusses the theoretical foundation, nature, source, and some important problems of the safety-guard obligation in tort law.
     本文对各国立法中的安全保障义务作了一定的介绍,并对安全保障义务的法理基础、性质定位、义务来源及侵权法中安全保障义务的几个重要问题进行了探讨。
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     The idea of wealth is a system of ideas, concerning the general nature, source,form,enjoyment and management of wealth.
     财富观是关于财富一般本质、源泉、形态、享用、管理的观念体系。
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     Based on the research of "academic management democratic power" and academic authority", the author explores the form and the rationality of such power from two aspects, and then sums up this power from seven aspects, i. e. , its nature, source, actors, subjects, objects, form, and the relation with "three A principle".
     在借鉴了“学术民主管理权力”和“学术权威”相关研究成果的基础上,文章从历史和学理两个方面探讨了大学基层学术权力的表现与合理性基础,得出了关于该权力的性质、来源、要素、主体、客体、形式以及与“三A原则”的关系等七个方面的归纳性认识。
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  相似匹配句对
     On the Source of the Human Nature
     论人性的源渊
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     NATURE SOURCE ELECTROMAGNETIC SOUNDING
     天然电磁场测深
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     On the Nature of Occupancy
     占有性质解读
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     On the nature productivity
     关于自然生产力问题的探讨
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     SOURCE AND VARIATION
     本源与变异 素描作品展作品选登
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Three model phenolic compounds,a known anticarcinogen BHA,a nature source of phenolic compound tea and a synthetic chemical cinnamic acid,have been used to treat male SD rats for studying the inhibitory mechanism at initiation stage of AFB1 which could induce hepatoma.The quantity of AFB1-DNA adduct in liver,glutathion S-transferase(GST) activity in hepatic cytosois and cytochrome P-450 activity of hepatic microsomal enzyme system were measured as indicators. Results showed that all of these three phenolic...

Three model phenolic compounds,a known anticarcinogen BHA,a nature source of phenolic compound tea and a synthetic chemical cinnamic acid,have been used to treat male SD rats for studying the inhibitory mechanism at initiation stage of AFB1 which could induce hepatoma.The quantity of AFB1-DNA adduct in liver,glutathion S-transferase(GST) activity in hepatic cytosois and cytochrome P-450 activity of hepatic microsomal enzyme system were measured as indicators. Results showed that all of these three phenolic compounds reduced the quantity of AFB1-DNA adduct and increased GST and P-450 activities.Results suggested that all of them could inhibit the initiation of AFB1-induced hepatoma in rats at three stages.

分别用三种有代表性的酚类化合物即己知抑癌物BHA、茶叶(云南沱茶)和人工合成的桂皮酸处理雄性SD大鼠,通过测定肝内AFB1-DNA加成物含量、GST和P-450水平的变化,探讨在AFB1诱发大鼠肝癌的启动环节,起抑癌作用的机理。结果表明:三种酚类化合物均能使AFB1-DNA加成物显著减少,同时使GST和P-450水平显著升高,说明它们均能抑制AFB1诱发大鼠肝癌的启动。

AbstractTGF-β presents widely in most normal tissues andtransformed cells,It is known that blood platelet is thebest nature source for TGF-β.The aims of the presentstudy was to extract and purify TGF-β from bovineblood platelets and to demonstrate its biologic activitiesafter injection into subperiosteum。Acidic ethanol extracts of bovine platelets werepurified to homogeneity by sequential gel filtration onBio-Gel P60 columns, first in the absence and then inthe presence of ultra-pure urea。As determined...

AbstractTGF-β presents widely in most normal tissues andtransformed cells,It is known that blood platelet is thebest nature source for TGF-β.The aims of the presentstudy was to extract and purify TGF-β from bovineblood platelets and to demonstrate its biologic activitiesafter injection into subperiosteum。Acidic ethanol extracts of bovine platelets werepurified to homogeneity by sequential gel filtration onBio-Gel P60 columns, first in the absence and then inthe presence of ultra-pure urea。As determined bysodium dodecyl sulfate polyacrlamide gel elec-trophoresis, the protein is mainly composed of the oneof 25 KD. In the presence of epidermal growth factor(2.5ng/ml),10 ng/ml of the purified protein inducednon-neoplastic normal rat kidney fibroblasts to under-go anchorage-independent growth in soft agar。Datily injection of TGF-β,purified from the bovineplatelets,into subperiosteum of adult mouse femursresulted in mesenchymal cell proliferation and differen-tiation,chOndrogenesis and endochondral osteogene-sis,After cessation of the injections,endocbondral os-sification occurred widely,resulting in replacement ofcartilage with new bone,These data demonstrate thatexogenous TGF-β stimulates mesenchymal prolifera-tion and differentiation that as occurs in early fracturehealing,suggesting the possibility of clinical applica-tion of TGF-β for the fracture repair and bone trans-plantation。

TGF-β广泛存在于多种正常组织细胞及转化细胞中,不同种属间高度同源。目前认为血小板是TGF-β最好的组织来源。本实验以牛血小板为原料,采用酸醇抽提方法,提取血小板蛋白。相继进行两次BiO-GelP60柱层析,分离纯化出其中分子量为25kDa的TGF-β。雄性昆明小鼠40只,随机分成实验组和对照组。在实验组动物股骨中下段前方骨膜下注射TGF-β溶液20μl(400ng);在对照组相应部位注射PBS溶解的牛血清白蛋白(BSA)20μl(l00μg)。结果显示,小鼠股骨干骨膜下每日注射TGF-β,导致其骨膜间充质细胞增殖、软骨生成及软骨内化骨效应;而对照组注射BSA后,在注射部位骨膜间充质细胞无明显增殖反应。实验表明,TGF-β作用于小鼠股骨干骨膜间充质细胞使之增殖,分化成软骨细胞和成骨细胞,通过软骨内化骨作用形成新的骨质。这与正常骨折愈合过程相一致;即是说,外源性的TGF-β可以启动骨生成过程,意味着TGF-β在骨折修复及骨移植方面有潜在性应用前景。

Straw fibers are natural cellulose with linen fiber properties and have more sources with low cost. They are widely used in daily articles, materials for agricultural, forestry, gardening application, medical materials and in construction and geotextile fields. They meet environmental protection ideas for their bio-degradation. As a regenerated nature source, their application has more and more attention and has a vast range of prospects.

秸杆纤维是具有一般麻类纤维性能的天然纤维素纤维,来源广、成本低,已被广泛用在日常用品,农、林、园艺用材料,医疗卫生材料,建筑和土工织物等领域,其可生物降解性适应环保要求,作为一种可再生的自然资源,其合理应用越来越受到人们的重视,具有广阔的开发应用前景。

 
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