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问:The boy was dying fast from a swordthrust.(那男孩因受剑伤快要死了。)(S.B.Z,P35)在此句中的介词from可不可以换成of? 答:一般说,因疾病、饥饿、年老、哀恸、失望等而死,用die of。例如: 相似文献
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A route for the synthesis of nefazodone is reported. Nefazodone was obtained with an overall yield of 37. 2% from phenol. The key steps involve the improved synthesis of 5-ethyl-4-(2-phenoxyethyl)-1, 2, 4-triazol-3(2H)-one, a key intermediate in the synthesis of nefazodone. The phenol was etherified with 1, 2-dichloroethane (75%), followed by iodination-amination with Nal and CH_3OH-NH_3(85.7%), acylation with ethyl chloroformate (95.7%) and cyclization with propionyl hy-drazine (83.6%). 相似文献
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ＩＮＴＲＯＤＵＣＴＩＯＮＷｅｗｉｌｌｆｉｒｓｔｒｅｃａｌｌｓｏｍｅａｌｇｅｂｒａｉｃｄｅｆｉｎｉｔｉｏｎｓｔｈａｔｗｉｌｌｂｅｕｓｅｄｉｎｔｈｅｐａｐｅｒ.ＡｈｙｐｅｒｓｔｒｕｃｔｕｒｅｉｓａｓｅｔＨｔｏｇｅｔｈｅｒｗｉｔｈａｆｕｎｃｔｉｏｎ·∶Ｈ×Ｈ→Ｐ 相似文献
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Carcinogenic and mutagenic polycyclic aromatic hydrocarbons (PAHs) generated in coal combustion have caused great environmental health concern. Seventeen PAHs (16 high priority PAHs recommended by USEPA plus Benzo[e]pyrene) present in five raw bituminous coals and released during bituminous coal combustion were studied. The effects of combustion temperature, gas atmosphere, and chlorine content of raw coal on PAHs formation were investigated. Two additives (copper and cupric oxide) were added when the coal was burned. The results indicated that significant quantities of PAHs were produced from incomplete combustion of coal pyrolysis products at high temperature, and that temperature is an important causative factor of PAHs formation. PAHs concentrations decrease with the increase of chlorine content in oxygen or in nitrogen atmosphere. Copper and cupric oxide additives can promote PAHs formation (especially the multi-ring PAHs) during coal combustion. 相似文献
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Edward.Albee’s masterpiece Who’s Afraid of Virginia Woolf?is generally considered as one of the representative works of Theatre of the Absurd.This paper will analyze the two sets of opposing power structure in the play from the perspective of New Historicism and further demonstrate the cultural and historical context implied in the play. 相似文献
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Arbutin was synthesized from glucose by two-step reaction below: (a) 2,3,4,6-tetra-O-acetyl-α-D-glucosyl chloride or bromide was prepared by glucose and acetyl halide (chloride or bromide), (b) 2,3,4,6-tetra-O-ace-tyl-α-D-glucosyl halide (Cl, Br) reacted with hydroquinone, methanol as solvent at pH=9.5-10.0. 相似文献
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Antioxidant power of phytochemicals from Psidium guajava leaf 总被引：1，自引：0，他引：1
INTRODUCTION There is a considerable epidemiological evi-dence indicating association between diets rich infresh fruits and vegetables and a decreased risk ofcardiovascular disease and certain forms of cancer.Free-radicals are generated continuously in thebody due to metabolism and disease (Yeum et al.,2003). In order to protect themselves against freeradicals, organisms are endowed with endogenous(catalase, superoxide dismutase, glutathione per-oxidase/reductase) and exogenous (C a… 相似文献
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朱芳 《读与写:教育教学刊》2010,7(3):27-29
The object of this paper is to study the translatability of culture through the enlightenment from Legge's translation of Lun Yu.A critical study of Legge's translation from a cultural angel is made before two principles peculiar to the translation of Chinese classics are proposed.The combination of classiczing and orientalizing the English language should be strived for in the translation of Chinese classics,and at the same time,it is of great significance to observe rather than break the limit of translatability. 相似文献
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"Everyday Use" is well-known story written by Alice Walker, who is a very famous black female writer. This paper will focus on using the decontructionism strategy to dismantle the binary oppositions of the story. The binary oppositions are "Pretty VS. Ugly, Civilized VS. Unenlightened, Hang VS. Use and The Mainstream Culture VS. Non-mainstream Culture". By analyzing, the paper concludes that no culture can be defeated and each culture needs to be passed on. Different cultures should respect each other. 相似文献
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Non-a-tocopherols are hydroxymethylated and hydrogenated to produce α-tocopherol in one pot process by simultaneously reacting with paraformaldehyde and hydrogen in the presence of catalysts of benzenesulfonic acid and 5% Pd/C in an autoclave. Effects of various operation conditions have been studied. The preferable reaction conditions are: temperature 180 ℃ to 200 ℃, pressure 5.0 MPa, acid concentration 0.5 g/100 ml ethanol, mass ratio of Pd/C to tocopherols 7.1 g/100 g, and reaction time 5.0 h. A product with α-tocopherol content of 80% was obtained by using a raw material with a total tocopherols content of 80.54%. The conversion of non-α-tocopherols is almost 100%, and the mole yield of a-tocopherol is more than 90%. 相似文献
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Kate Chopin,one of the most outstanding women writers in the late nineteenth century in America,focused on women’s social position,marriage and family,love and freedom to fight against patriarchalism.She wrote two novels and about a hundred short stories in the 1890s.And over a long period of time,critics have considered The Story of an Hour as a work of feminism which offers a strikingly feminist perspective on an American housewife of that time.This thesis analyzes the inner experience of the heroine within an hour and shows us that freedom is so essential to her while her marriage is a yoke to her. 相似文献
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The iron-loaded organic phase of naphthenic acid-isooctyl alcohol-kerosene was prepared, and the process kinetics of hydrothermal stripping of iron from the phase was studied. Several factors affecting hydrothermal stripping, such as the polymer of naphthenic acid, initial concentrations of iron and naphthenic acid, temperature and agitation time, were investigated, and based on experimental results and theoretical analysis, two kinetic models were established.The stripping rate equation suggests that the hydrothermal stripping process activation energy is 96.4 kJ·mol-1 and the stripping is controlled by hydrolysis of naphthenic complex of iron. The values calculated by the stripping fraction equation comparatively accord with the experimental data. 相似文献
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1 Ｉｎｔｒｏｄｕｃｔｉｏｎ Ａｑｕｅｏｕｓｅｆｆｌｕｅｎｔｓｄｉｓｃｈａｒｇｉｎｇｆｒｏｍｍｉｎｉｎｇａｎｄｏｔｈ ｅｒｉｎｄｕｓｔｒｉｅｓｃｏｎｔａｉｎｈｅａｖｙｍｅｔａｌｓｓｕｃｈａｓｌｅａｄ ,ｃａｄ ｍｉｕｍａｎｄｃｈｒｏｍｉｕｍｉｎｄｉｓｓｏｌｖｅｄａｎｄ ｐａｒｔｉｃｕｌａｔｅｆｏｒｍｓ[1] .Ｔｈｅｉｍｐａｃｔｏｆｕｎｔｒｅａｔｅｄｉｎｄｕｓｔｒｉａｌｅｆｆｌｕｅｎｔｓｏｎｔｈｅａｑｕｅｏｕｓｅｎｖｉｒｏｎｍｅｎｔｈａｓｂｅｅｎｅｘｔｅｎｓｉｖｅｌｙｓｔｕｄｉｅｄ[2 ] .Ｃｏｎｖｅｎｔｉｏ… 相似文献
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Non-α-tocopherols are hydroxymethylated and hydrogenated to produce α-tocopherol in one pot process bysimultaneously reacting with paraformaldehyde and hydrogen in the presence of catalysts of benzenesulfonic acid and 5%Pd/C in an autoclave. Effects of various operation conditions have been studied. The preferable reaction conditions are: temperature 180 ℃ to 200 ℃, pressure 5.0 MPa, acid concentration 0.5 g/100 ml ethanol, mass ratio of Pd/C to tocopherols 7.1 g/100 g, and reaction time 5.0 h. A product with α-tocopherol content of 80% was obtained by using a raw material with a total tocopherols content of 80.54%. The conversion of non-α-tocopherols is almost 100%, and the mole yield ofα-tocopherol is more than 90%. 相似文献
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John Steinbeck(1902-1968) is a famous American novelist. The Chrysanthemums was considered to be one of his finest short stories which has become progressively more influential in gender studies during the following decades. As the protagonist, Elisa unfolds herself in front of the readers about her rebellion and submission to the reigning patriarchal ideology. In the paper, I try to present Elisa’s mind journey in a male-dominating society, using gender studies analysis. The theme of this story is to describe women’s position in a male-centered and controlled culture. In order to give a most justifiable analysis of the theme of this short story, I base my study of Elisa’s mind journey on the prospective of gender studies. 相似文献