P - petroleum ether 中文

petroleum ether 石油醚。

石油醚。 “petroleum“ 中文翻譯： n. 石油。 crude [raw] petroleum ...“ether“ 中文翻譯： n. 1.【物理學】以太，能媒。 2.【化學】醚；乙醚。 ...“ether petroleum“ 中文翻譯：石油醚,石油精“ether from petroleum“ 中文翻譯：石油醚“petroleum ether extract“ 中文翻譯：石油醚抽提物“petroleum ether insoluble“ 中文翻譯：石油醚不溶物“petroleum ether insolubles“ 中文翻譯：石油醚不溶物“petroleum ether poisoning“ 中文翻譯：石油醚中毒“pet．et．petroleum ether“ 中文翻譯：石油醚“toxic effect of petroleum ether“ 中文翻譯：石油醚毒性作用“ether“ 中文翻譯： n. 1.【物理學】以太，能媒。 2.【化學】醚；乙醚。 3.〔詩〕上空，蒼天。 4.【哲學】靈氣；氣氛。 -ish，-like adj. “petroleum“ 中文翻譯： n. 石油。 crude [raw] petroleum 原油，重油。 “absolute ether“ 中文翻譯：絕對乙醚; 無水醋; 無水醚“acetacetic ether“ 中文翻譯：乙酰乙酸乙酯“acetic ether“ 中文翻譯：醋酸乙脂; 醋酸乙酯,乙酸乙酯,醋酸醚; 乙酸乙酯“acetoacetic ether“ 中文翻譯：乙酰醋酸乙酯; 乙酰乙酸乙酯“acetylacetic ether“ 中文翻譯：乙酰乙酸乙酯“adiethyl ether“ 中文翻譯：乙醚“alcohol ether“ 中文翻譯：醇醚; 一般醚; 羥基醚“aliphatic ether“ 中文翻譯：脂肪醚; 脂族醚“alkyl ether“ 中文翻譯：烷基醚“allyl ether“ 中文翻譯：烯丙醚“allylmelamine ether“ 中文翻譯：烯丙三聚氰胺“amidogen ether“ 中文翻譯：胺醚“amyl ether“ 中文翻譯：戊基醚; 戊醚

petroleum jelly
The anti - microbial activities of crude ethanol extract from aerial parts of sophora alopecuroides and its petroleum ether , chloroform , n - butanol and water fractions of sophora alopecuroides to pythium aphanidermatum , fusarium oxysporum f . sp . cucumerinum , fusarium oxysporum f . sp . lycopersici , alternaria solani , pseudomonas pachrymans and xanthomonas vesicatoria were tested by mycelial radial growth test and agar - well diffusion 本實驗采用帶毒平板菌絲生長法和瓊脂打孔藥劑擴散法測定了苦豆子地上部分乙醇粗提物及其石油醚、氯仿、正丁醇和水層的不同極性溶劑萃取物對瓜果腐霉、黃瓜枯萎病菌、番茄枯萎病菌、番茄早疫病菌、黃瓜角斑病菌和番茄瘡痂病菌的抗菌活性。
On one hand , the allelopathy caused by petroleum ether and ethanol extracts of s . chamaejasme leaves on the other plants germination was investigated , on the other hand , the inhibition of the 2 extracts on insects and pathogenic microorganism of crop were tested . the aim of these studies is to provide empirical foundation for the development of a new botanic pesticide 本文從化感作用的角度出發，研究了瑞香狼毒葉石油醚和乙醇兩種提取物對植物種子萌發的影響，同時研究了兩種提取物對作物病原菌和昆蟲生長的抑制作用，目的在于揭示瑞香狼毒葉是否具有化感作用，并為一種新的植物源農藥的開發提供實驗依據。
To capsicum for raw materials dissolved in ethanol and used petroleum ether , ether from the organic solvent solution extraction and purification wealthy markets prospect of food additives and with extensive medical value of the material - pepper accuracy ; and further research in ethanol concentration , saponification time , temperature under different conditions , such as the purity level of capsaicin 以辣椒精為原料溶于乙醇中，再利用石油醚、乙醚等有機溶劑從溶液中提取和純化富有市場前境的食品添加劑和具有廣泛醫用價值的物質辣椒精；并進一步研究在乙醇濃度、皂化時間、溫度等不同條件下得到的辣椒堿純度高低。
Results of experiments on antibacterial and antifungal activities showed that extracts of alcohol and acetic ester had remarkable bacteriostasis effects against 6 bacteria ; aqueous extract was more effective against fungi , and slight against bacteria ; petroleum ether extract had no effect against bacteria and fungi ; butylalcohol extract had different effects against bacteria , but had no effects against fungi 抑制活性試驗結果顯示：乙醇提取物和乙酸乙酯萃取物對供試的6種細菌有較強的抑制作用；水相對供試的5種真菌有較強的抑制作用，而且對細菌有較小抑制作用；石油醚相對真菌和細菌幾乎無抑制作用；正丁醇萃取物對細菌有不同程度的抑制作用，而對真菌無抑制作用。
According to the polarity , the residue was isolated with petroleum ether , chloroform , ethyl acetate , and n - buoh , respectively . the n - buoh fraction , confirmed as neuroactive component , was subjected to sephadex lh - 20 column chromatography to provide an extract fraction , as a buff powder , which could induce neurite outgrowth in rat pheochromocytoma pc12 cells in a dose - dependent manner up to 50 mg / l 將菟絲子干粉用75乙醇浸泡后，減壓蒸干后得到褐色漿狀物，經石油醚、氯仿、乙酸乙酯、正丁醇萃取，經柱層析后，再用葡聚糖凝膠對有效成份進一步純化，獲得了菟絲子中能誘導pc12細胞分化的活性組分。
The contents of three valepotriates in v . officinalis also varied significantly different areas , samples from nanchuan of chongqing showing the highest . it is also showed that the contents of three valepotriates in underground part of valerians plants are higher than that in aerial part and the contents of three valepotriates in valeriana jatamansi herb and v . officinal is herb collected in september is highest . valepotriates of valeriana jatamansi were obtained using petroleum ether , with content of valtrate , didrovaltrate and acetovaltrate between 70 % and 80 % 我們以采用rp - hplc法測定不同產地、部位和采收期的纈草屬植物中纈草素、二氫纈草素和乙酰纈草素的含量，結果發現纈草類生藥蜘蛛香、纈草、寬葉纈草和黑水纈草之間纈草素類成分含量差異顯著，其中以蜘蛛香含量最高，纈草次之，寬葉纈草再次，黑水纈草含量最低。
We got 4 parts from the extraction of astragalus variabilis bunge through systemic research ways of phytochemistry , which respectively are the part of petroleum ether , the part of petroleum ether , the part of etoa and the part of n - buoh the part of n - buoh are isolated by the successively methods of silica - gel column chromatography , tlc and sublimation 摘要采用植物化學成分系統研究的方法，從變異黃芪醇提總浸膏中分段萃取得到石油醚提取部分、氯仿提取部分、乙酸乙酯提取部分和正丁醇提取部分。
The antimicrobial secretion could be divided into three sections , every section had antimicrobial activity . the first could be extracted by petroleum ether , the second could be extracted by ethyl alcohol , the third could dissove in water and could be separated by sephadex g - 50 , g200 gel filtration chromatography and carbornmethyl cellulose - 1 anion - exchange chromatography and detected by a256 , . the antimicrobial secretion had wide spectrum and had strong inhitory activity against germs and fungi , they could inhibit sixteen kinds of plant pathogenic germs , eight kinds of animal germs and eight kinds of plant pathogenic fungi 粗提物經石油醚萃取可得第一個活性部分，剩余部分經無水乙醇萃取可得第二個活性部分，剩余物質再經凝膠sephadexg - 50后有兩個峰，第二峰有活性，再經凝膠sephadexg - 200后有三峰，第二峰有活性，將其經過陽離子交換柱cm - 1后有兩峰，此兩峰均有抑菌活性。
Under that condition the strain can produce the most concentration of the bioactive compounds . the physical and chemical properties of the actibacterial compounds have been studied , the results showed the bioactive substance has heat stable , acidity and weakly alkali stable . it can be dissolved in acid water , chloroform solvent , can not be dissolved in ethyl acetate , petroleum ether , alkali water . the result of thinlayer chromatography showed the bioactive compounds can give off blue and green fluorescence in the uv light . the paper chromatography demonstrate the bioactive substance may be a new construct compounds 研究表明，該活性物質具有較強的熱穩定性， ph 9的條件下能穩定存在，但ph 12的強堿性條件下活性物質的抗菌活性幾近喪失；活性物質易溶于氯仿、酸性水、不溶于乙酸乙酯、石油醚、堿性水；薄層層析顯示活性物質在紫外光下能發藍綠色熒光等特點；由捷克八溶劑系統紙層析鑒定該抗菌活性物質不屬于四大類抗生素，可能為一新的抗菌活性物質。
There existed self - poison phenomenon and the ri was up to - 1 during the germination of s . chamaejasme when the concentration of petroleum ether extract was 20 gdw . ml - 1 . furthermore , different concentrations of ethanol extract inhibited the germination of lespedeza davurica 瑞香狼毒的自毒作用明顯，其作用的主要成分是葉乙醇提取物，當濃度為20gdw ? 100ml ~ ( - 1 )時，完全抑制了瑞香狼毒種子的萌發，化感效應指數達到- 1 。
One of the experimental results indicated that different concentrations of two extracts inhibited the radicle and embryo growth of chloris virgata . different concentration of petroleum ether extract accelerated the germination of c . virgata l . at different extension 實驗結果表明，瑞香狼毒葉石油醚和乙醇不同濃度的兩種提取物對虎尾草種子胚根和胚芽的生長均有抑制。
The mixed solvent consists of solvent naphtha , decalin , and petroleum ether in a certain proportion , which was used to synthesize 3 - sulfo p - anisidine by using p - anisidine as raw material 摘要用溶劑汽油、萘烷、石油醚按一定比例復配成混合型溶劑，以對茴香胺為原料，用該溶劑合成了3 -磺酸基對茴香胺，產品中不含致癌物。
Methods the extracted liquid with petroleum ether from the geochemical samples in the north of shaanxi was spectrally analyzed by using the optimized measurement condition 方法用優化后的條件對陜北地區化探樣品中芳烴的石油醚萃取液進行了光譜分析。
Three different extracts were obtained after freeze - dried coriandrum sativum l was processed by petroleum ether , 95 % - ethanol , and water respectively 摘要分別用石油醚、 95 %乙醇、水浸提芫荽，獲得浸提液。
They are also employed to determine the density of gasoline . kerosene , vegetable oil and petroleum ether 輕于水的，用以測定甲醇、乙醇、乙醚等水溶液；以及汽油、煤油、植物油、石油醚等液體之密度。
The element sulphur was extracted with petroleum ether from the rust powder in oil tank truck , and the time of extracting was estimated 摘要用石油醚把元素硫從鐵銹粉中萃取出來，確定了萃取時間。
A comparative study of supercritical petroleum ether and carbon dioxide drying in the preparation of carbon aerogels 超臨界石油醚干燥和超臨界二氧化碳干燥在制備有機和炭氣凝膠中的比較研究
Determination of arsenic in edible oil by digestion - petroleum ether extraction and hydride generation atomic fluorescence spectrometry 原子熒光光譜法測定食用油中砷
The essential oil of s . chamaejasme was part of petroleum ether ex tract of its leaves 對于其他植物病原菌的抑制或促進作用是否存在有待作進一步的研究。

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petroleum ether

petroleum ether 石油醚。

petroleum jelly

Methods the extracted liquid with petroleum ether from the geochemical samples in the north of shaanxi was spectrally analyzed by using the optimized measurement condition 方法用優化后的條件對陜北地區化探樣品中芳烴的石油醚萃取液進行了光譜分析。

Three different extracts were obtained after freeze - dried coriandrum sativum l was processed by petroleum ether , 95 % - ethanol , and water respectively 摘要分別用石油醚、 95 %乙醇、水浸提芫荽，獲得浸提液。

They are also employed to determine the density of gasoline . kerosene , vegetable oil and petroleum ether 輕于水的，用以測定甲醇、乙醇、乙醚等水溶液；以及汽油、煤油、植物油、石油醚等液體之密度。

The element sulphur was extracted with petroleum ether from the rust powder in oil tank truck , and the time of extracting was estimated 摘要用石油醚把元素硫從鐵銹粉中萃取出來，確定了萃取時間。

A comparative study of supercritical petroleum ether and carbon dioxide drying in the preparation of carbon aerogels 超臨界石油醚干燥和超臨界二氧化碳干燥在制備有機和炭氣凝膠中的比較研究

Determination of arsenic in edible oil by digestion - petroleum ether extraction and hydride generation atomic fluorescence spectrometry 原子熒光光譜法測定食用油中砷

The essential oil of s . chamaejasme was part of petroleum ether ex tract of its leaves 對于其他植物病原菌的抑制或促進作用是否存在有待作進一步的研究。