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|  | | 为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法,我们为您准备了出自英文原文的大量英语例句,供您参考。 | |
A W/O microemulsion was prepared with Span80-PS (petroleum sulfonate) as complex emulsifier, isopropanol as cosurfactant and kerosene as oil phase.
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The optimal constituents of microemulsion were found from pseudoternary phase diagrams: the mass ratio of Span80 to PS was 4:1 and complex surfactant to cosurfactant was 1:1.
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Polystyrene-graft-polydimethylsiloxane (PS-g-PDMS) copolymers with different PDMS content were synthesized by the radical bulk copolymerization of PDMS macromonomer and styrene.
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The thermal stability of PS-g-PDMS is better than that of PS.
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Single and pauci chain aggregates of isotactic polystyrene (i-PS) were prepared by the freeze-drying process from dilute solutions with the concentration from 1×10-3 to 2×10-5 g/mL.
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| | (1) o-Amino ethylbenzene is dissolved in 10 times its weight of conc. H_2 SO_4 and nitrated with calculated amount of HNO_3 (1.42) below O°. The reaction mixture is poured into ice and the resulted solution saturated with anhydrous Na_2 SO_4, the sulphate of the nitrated base is separated out in the form of yellow precipitate. The salt treated with aq. NH_3 gives a nitro base of brilliant yellow needle form (recrystallised in alcohol), m.p. 59-60°; acetyl derivative, m.p. 151°, benzoyl derivative m.p. 165-1... | | 1.以鄰硝基乙苯)制造合霉素的付产物)的还原物——鄰氨基乙苯,在大量硫酸中进行硝化,所得的單硝基产物,经証明其硝基系代入乙基之对位,因此确认所得产物为4.硝基.2氨基乙苯。 2.我們发現此一化合物无論在合成方法方面或物理常数方面,至今在文献上尚未寻到记載,因此可認为是一个新的化合物。 3.將此一化合物重氮化后,在棉布上与納夫吐AS(即2萘酚3,甲醯苯胺)偶合,得到鮮艳美丽的大紅色,其色光較用坚牢大红G色基(又名旗紅色基,即4硝基,2氨基甲苯)的重氮鹽与納夫吐AS偶合所得之大紅色略深(即黄光較少)而相当于坚牢大紅G色基与納夫吐AS及納夫吐AS—D拼用后偶合所得之颜色。因此在实际染色工业上,如用此一化合物为重氮剂与納夫吐AS染大紅色。可较用坚牢大紅G色基省去納夫吐AS—D,其日光坚牢度及皂洗坚牢度,經証明与用坚牢大紅G色基为重氮剂所染得者相同。我們建議这一化合物在染色及染料工业上称为“坚牢大紅GE色基”。 | | 文摘来源 | | In view of some analogues of chloramphenicol show more or less in vitro activity towards quite a few species of tumour cells,the authours have examined the in vitro anti-Ehrlich ascites activity of 5 compounds prepared by one of us and Par before,namely,α-dichloroacetamido- (or acetamido)-β-hydroxy-p-nitro-o-hyrdroxy-(or methoxy)-propiophenone(Ⅰ,Ⅱ,Ⅲ),and α-dichloro- acetamido-β-hydroxy-p-amino-o-hydroxy-propiophenone(IV, V).The results(see Tab. 1)showed that the compounds carrying a nitro group in the benze... | | 1.試驗了α-二氯乙酰胺(或乙酰胺基)-β-羥基-对-硝基-邻羥基(或甲氧基)苯丙酮及其相当的氨基化合物的体外抗艾氏腹水瘤細胞的作用,表示硝基对产生活力有影响。2.合成了若干芳香脂肪硝基化合物及β-硝基苯乙烯类化合物,并試驗了該項化合物的体外抗艾氏腹水瘤細胞的活力。3.从活力与化学結构的关系看,脂肪族飽和碳原子上的硝基对产生抗瘤細胞活力无影响,而硝基連在不飽和碳原子上时对活力的增強有很大关系。故一系列的β-硝基苯乙烯类化合物均有相当好的抗肿瘤細胞作用。至于苯乙烯环上的取代基則关系不大,除非取代的基团体积較大,活力也减小。 | | 文摘来源 | | Hypertensive disease is usually treated with "ying tonics" in Chinese medicine. In this paper the hypotensive action of 4 "ying tonics" were studied: Phellodendron sachalinense (Ps), Anemarrhena asphodeloides (Aa), Rehmannia glutinosa (Rg), and Ligustrum lucidum (LI). Rats were made hypertensive by (Ⅰ) burning of left adrenal cortex, (Ⅱ) orchiectomy, (Ⅲ) s.c. injection of testosterone propionate 5 mg/day to female rats for 16 days, and (Ⅳ) s.c. injection of stilbestrol 1—2 mg/day to male rats for 16 ... | | 高血压病的治疗,根据中医辨证论治,多用滋阴药。本文用大白鼠制备4种高血压模型(肾上腺左侧烫伤、睾丸切除、雌鼠每天皮下注射丙酸睾丸酮5毫克共16天及雄鼠每天皮下注射己烯雌酚1—2毫克共16天),并试验4种滋阴药(黄蘗、知母、生地黄及女贞子)对其血压的影响,以尾容器测量大白鼠的血压。睾丸切除、丙酸睾丸酮及己烯雌酚等3型的大白鼠在手术或给性激素后第4周的血压平均值均较手术前非常显著地升高,其中升高20毫米汞柱以上的分别有38,71及88%。肾上腺烫伤型不升压,可能是因烫伤部位太小或太浅,或因未切除肾脏所致。在手术或注射性激素后第6周开始(睾丸切除型于第5周开始),每种模型的大白鼠各分为5组,分别灌服黄蘗、知母、生地黄、女贞子及水。每天剂量:黄蘗与知母为2克生药/公斤,生地黄与女贞子为20克生药/公斤,水为1毫升/鼠。服药2周期内,睾丸切除型大白鼠服4种滋阴药各组的平均收缩压均较服药前1周降低11毫米汞柱以上。黄蘗与知母降低收缩压18与15毫米汞柱;若按降压面积百分比计算,则分别为-18及-16%,与同型对照组比较,降压非常显著(P<0.01),可认为有效。其他各型服不同药的各组,血压降低均在8毫米汞柱以下,其降压面... | | 文摘来源 | |   | | << 更多相关文摘 |
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