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extracts
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  提取物
    Study on the Protective Effect of Extracts of Gingko Biloba Leaves (EGb) on Learning and Memory Disorder in Diabetic Rats
    银杏叶提取物(EGb)对糖尿病大鼠学习记忆障碍保护作用的机制研究
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    Experimental Study of Anti-tumor Function、Mechanmism and Application of Two Extracts from Pleurotus Erngii and Blackcurrant
    阿魏蘑菇、黑加仑提取物抗肿瘤作用、机制和应用的实验研究
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    Studies on Anti-HIV-1 Activity of Fungi Extracts
    真菌发酵产物提取物抗HIV-1活性研究
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    An Experimental Study of the Promoting Effects on the Extracts of the Chinese Medicinal Herb and Tung Oil
    黄芫花和桐油提取物促癌作用的实验研究
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    Antimutagenicity Screening of Water Extracts from 102 Kinds of Chinese Medicinal Herbs
    102种中药水溶性提取物的抗诱变性筛选
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    Analyses of the Main Officinal Components in Several Kinds of Medicinal Hesperidium and the Inhibition of Their Extracts to Tyrosinase
    药用柑果主要药用成分及其对酪氨酸酶抑制作用研究
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    Pharmacological Study on Si-Ji-An Extracts
    四季安干浸膏药理作用研究
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    Effect of the Extracts of Pumpkin Seeds on the Urodynamics of Rabbits:An Experimental Study
    Effect of the Extracts of Pumpkin Seeds on the Urodynamics of Rabbits:An Experimental Study
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    Effects of Sanhuang(三黄)Extracts on Transmembrane Potentials in Guinea Pigs Papillary Muscles
    三黄提取液对豚鼠心室乳头肌跨膜电位的作用
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    Studies on Metallic Elements in Boiling Water Extracts from 3 Processed Products of Concha Arcae
    瓦楞子的3种炮制品水煎液中金属元素的研究
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  extracts
The aqueous and solvent extracts when tested against 11 gram-negative and 2 gram-positive bacteria and 3 fungi expressed activity to most of the organisms.
      
Methanol extract showed more activity amongst all the solvent extracts, particularly remarkable activity recorded against gram-positive bacteria.
      
Aqueous and organic solvent extracts tested by agar-well diffusion method against 12 human pathogenic bacteria and 3 fungal strains showed activity to most of the organisms.
      
Fermentation broth and cell extracts were tested against typed test organisms.
      
The activity profiles of the intracellular and extracellular crude extracts showed that the antibiotic producing culture produces two or more compounds, one being intracellular (antifungal), other being extracellular (antibacterial).
      
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A new method for the biological assay of vegetable purgatives based on the numbers of wet faeces excreted by groups of mice after dosing is described. The relation of the number of wet faeces per group of mice to the logarithm of the dose was found to be linear. A cage has been specially designed for this assay and it has been found advantageous to incorporate a definite proportion of water in the diet during test. 40 mice divided equally into 4 groups were used in each assay. 2 groups received the standard...

A new method for the biological assay of vegetable purgatives based on the numbers of wet faeces excreted by groups of mice after dosing is described. The relation of the number of wet faeces per group of mice to the logarithm of the dose was found to be linear. A cage has been specially designed for this assay and it has been found advantageous to incorporate a definite proportion of water in the diet during test. 40 mice divided equally into 4 groups were used in each assay. 2 groups received the standard preparation and the other 2 groups received the test preparation. The standard deviation of a single determination based on 9 such assays was estimated to be 15.7 per cent. For rhubarb and its preparations, a“6-point”assay is advocated. With suitable restric-tion in the design of the assay, it is possible to calculate the potency by simple methods. Powdered crude drugs are used as laboratory standards in the assay of senna and rhubarb. The doses of cascara bark required to produce distinctive responses are too inconveniently large to be administered in suspension. It was found possible to use a potent extract of cascara in place of the powdered bark as a laboratory standard. Examples of the assay and the subsequent calculations are given. The method described is not only convenient in use but also gives a comparatively high degree of accuracy. The method has been successfully applied to senna leaf, senna fruit, rhubarb, cascara sagrada and extracts and commercial preparations made from these drugs, pure glycosides(sennosides A and B) and pure anthracene compounds(aloe emodin and aloe-emodine anthranol).

(1)本文详述植物性泻药的一种新的生物测定法,此法係用小白鼠在服药后所排出的濕粪数为基础,以定泻药的效价。(2)小白鼠服药後所排出的湿粪数与剂量指数的关係经证明为一直线。(3)本法所用鼠笼係特别设计,并证明在饲料内加入一定量的饮水,具有多种优点。(4)番泻效价的测定,每次用小白鼠4组,每组10只。2组给与标准品,另外2组给与试验品。根据9次试验的结果,试验的标准差是15.7%.(5)大黄效价的测定,以采用“6点”法为宜,即每次试验用小白鼠6组,3组给与标准品,另外3组给与试验品,所得的准确度与上述相仿。波希鼠李皮浸膏的效价测定,则用“4点”法或“6点”法均可。(6)所有试验一律采用粉状生药为实验室的比较标准,但是波希鼠李皮的效价太低,它的粉末不适於作为标准之用,可用波希鼠李皮乾浸膏来代替,作为比较标准。(7)本文对於效价测定及其计算方法都举例说明,并介绍了比较常法为简捷的相关效价计算法。(8)本法不但方便易行,而且有相当高的准确度;曾用在番泻、大黄、波希鼠李皮及其制剂,以及一些纯粹的蒽醌衍生物的效价测定,都获得了满意的结果。

The essential oil of the chinese drug, Hu-Io-po-tze, the seeds of Daucus carota L., was found to contain the following constituents: (1)a small amount of tiglic acid,(2) asarone, and(3) bisabolene which forms a trihydrochloride, melting point 77-78℃ and a hexabromide, melting point 155-157℃. From the non-volatile residue obtained by extracting the drug with benzene there have been isolated, an asaraldehyde, its semicarbazone melts at 205-207℃ and an unknown sterol having a molecule formula C_(27)H_(52)O...

The essential oil of the chinese drug, Hu-Io-po-tze, the seeds of Daucus carota L., was found to contain the following constituents: (1)a small amount of tiglic acid,(2) asarone, and(3) bisabolene which forms a trihydrochloride, melting point 77-78℃ and a hexabromide, melting point 155-157℃. From the non-volatile residue obtained by extracting the drug with benzene there have been isolated, an asaraldehyde, its semicarbazone melts at 205-207℃ and an unknown sterol having a molecule formula C_(27)H_(52)O and a melting point 87℃.

国产胡萝卜子经化学分析後,除证实共挥发油中含有细辛酮及毕纱倍半萜革外,并发现其中亦含有顺芷酸,细辛醛及一种未知固醇C_(27)H_(52)O,熔点87℃。

A saponin, m.p. 220-230°, [α]_D~(25)=-40°, has been obtained in about 9% yield from the Chinese drug, Pai-t'ou-wung, which is usually used for the treatment of fever and dysentery. During hydrolysis with 5% sulphuric acid it gives a crystalline sapogenin with a m.p. 284°, [α]_D~(17)=+35.1, and a molecular formula of C_(27)H_(44)O_4, and a crystalline acetyl derivative, C_(27)H_(43)O_4 (CH_3 CO), m.p. 253°, is prepared. Since these saponin and sapogenin differ in properties from those described in literature,...

A saponin, m.p. 220-230°, [α]_D~(25)=-40°, has been obtained in about 9% yield from the Chinese drug, Pai-t'ou-wung, which is usually used for the treatment of fever and dysentery. During hydrolysis with 5% sulphuric acid it gives a crystalline sapogenin with a m.p. 284°, [α]_D~(17)=+35.1, and a molecular formula of C_(27)H_(44)O_4, and a crystalline acetyl derivative, C_(27)H_(43)O_4 (CH_3 CO), m.p. 253°, is prepared. Since these saponin and sapogenin differ in properties from those described in literature, anemosaponin and anemosapogenin are provisionally assigned as their names. The sugar part has been confirmed to be glucose through the formation of osazone. A second principle, C_(30)H_(52)O_(10), m.p. 229-232°, has also been isolated from the ethereal extract of this drug.

從白頭翁(Anemone Chinensis Bunge)中分得一皂鹼素,熔點不明顯,約在220-230°,水解後分得結晶皂鹼配醣基,其分子式為C_(27)H_(44)O_4,熔點284°,[α]_D~(17)=+35.1°,並製得乙醯酯,熔點253°。糖的部分證實為葡萄糖。此外還分得一中性物質C_(30)H_(52)O_(10),熔點229-232°。

 
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