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intermediate from
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  中间体
     After drying, the wet content of the S PVC filter cake was reduced from 25% to 0.3%, and that of dipyidamole intermediate from 62% to 0.5%.
     SFD与 SMTD的直径分别为 30 0和 40 0 m m,S- PVC滤饼含湿量约 2 5 % ,双嘧达莫中间体“四羟物”约 6 2 %。
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     This article reviews the recent progress in the synthesis of 3-norcephalosporin including Shionogi route via 3-hydroxycephem and Otsuka route via allenecarboxyate intermediate from penicillin G,and Schering rote via 3-exomethene intermediate based on cephalosporin C.
     介绍了以青霉素G为原料分别经3羟基头孢烯、丙二烯氮杂环丁酮中间体的盐野义和大路线,以及以头孢菌素C为原料经3环外亚甲基中间体的Schering合成路线,并对各条工艺路线进行了评价.
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     The paper talks about the synthesis of 6-methoxy-7-benzyloxyquinoline-4-one anticancer intermediate from vanillin,which is cheap and easy to get,through five steps of benzylation,nitration,oxidation,reduction and cyclization.
     以廉价易得的香兰素为起始原料,通过苄基化、硝化、氧化、还原以及合环五个步骤合成了具有抗肿瘤活性的药物中间体6-甲氧基-7-苄氧基喹唑啉-4-酮。
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     Synthesis,Characterization and Absorption Activity of Aluminosilicate Intermediate from Coal Fly Ash
     粉煤灰合成沸石中间体的表征与性质
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     The(results) show that the intermediate from the addition reaction between the carbonyl and amine groups formed first,it was further dehydrated to form the double bond.
     研究发现,羰基和胺基将首先加成形成中间体,然后脱水形成双键。
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  “intermediate from”译为未确定词的双语例句
     The products of the reaction mainly were S 2 along with small amount (under 5%) of COS and trace CS 2.The produced COS may be the intermediate from SO 2 to S 2,and COS productivity decreased significantly as the conversion of SO 2 exceeds 50%.
     反应产物主要为单质硫,有微量COS和CS2生成,其中COS可能是CO还原SO2生成单质硫过程中的中间产物。
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     Now the (R)-3-(3-fluoro-4-acetyl phenyl)-2-oxo-5-oxazolidinyl methanol is synthesized by author based on directly cyclized intermediate from benzyloxycarbonyl aromatic amine with (R)-glycidyl butyrate and another raw material m-fluoroaniline.
     作者采用苄氧羰酰芳胺和(R)-丁酸缩水甘油酯直接环合路线,并以间氟苯胺为原料,合成了(R)-[3-(3-氟-4-乙酰基苯基)-2-氧代-5-噁唑烷基]甲醇。
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     We carry the analysis research on reservoir distribution, physical characteristics, reservoir heterogeneous characteristic and development distribution of intermediate from portrait to plane, form macro to microcosmic and from fix quantify to fix character, to ascertain mostly factor affecting reservoir physical characteristics and post radically inherence character of this reservoir.
     依据岩心分析资料及测井资料,对该区的储层由纵向到平面、从宏观到微观、从定量到定性进行储层分布特征、物性特征、非均质特征及隔夹层发育分布进行分析研究,明确影响储层物性的主要因素,从根本上揭示该套储层的内在特征。
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     By comparing two different ways to synthesis the important intermediate from the start material (S)-malic acid or ethyl 4-chloroacetoacetate, the route from the later material was regarded as economic environmental and can be industrialized.
     分别从(S)-苹果酸和氯乙酰乙酸乙酯出发以两条不同的路线进行了比较性的合成,提出从氯乙酰乙酸乙酯出发的路线是一条经济、环境友好、且比较适合于大量生产的路线。
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     The reaction of phosphorus oxychloride with ethyl acetoacetate in the presence of tributylamine yeilded specifically the E-stereoisomer as the key intermediate, from which E-stereoisomer "Mie-Ya-jing" was prepared by treating with excess of methyl alcohol.
     用三氯硫磷(或二烷氧基磷酰氯)与乙酰乙酸乙酯烯醇钠盐反应可得Z体,经核磁共振谱测定,所得灭蚜净及其类似物的E体或Z体含量均在95%以上。
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     18, intermediate.
     男18例,女22例。
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     intermediate filaments
     中间丝
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     b) the intermediate stage, from 1870's to 80's;
     ②中期(19世纪70-80年代);
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     The rock changes from intermediate to acidic.
     岩石由偏中性逐渐变化为酸性。
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  intermediate from
This large effect of porosity can be related to limitation in the desorption of the bulky and polar molecules of DPBO (and olefinic intermediate) from the micropores.
      
Evidence was obtained to support the hypothesis that 2-ketobutyric acid is the intermediate from which bothn-propanol andn-butanol are found in fermentations by mutant strains of yeast.
      
The work presented is concerned with the application and evaluation of this concept in order to isolate a certain pharmaceutical intermediate from a binary mixture.
      
The initial compounds and the intermediate from the thermal decomposition were also characterized through IR spectra and X-ray diffraction.
      
Their intermediate from the thermal decomposition found through TG/DTA curves in air indicated the presence of different kinds of calcium carbonates related to the reversibility and crystalline structure, depending on the original compounds.
      
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A stuty has been made of the chromosome number of root-tip cells and the chro- mosome configuration of PMCs in five intermediate forms of progeny of Triticum aes- tivum×Agropyron glaucum.The somatic cells in each of these intermediate forms have 28 pairs of chromosomes(2n=56)and the PMCs at diakinesis or metaphase Ⅰ of meiosis have 28 bivalents.The process of meiosis in most PMCs is regular.Lag- ging chromosomes and fragments at anaphase Ⅰ or telophase Ⅰ were observed only in few PWCs.According to our results,all...

A stuty has been made of the chromosome number of root-tip cells and the chro- mosome configuration of PMCs in five intermediate forms of progeny of Triticum aes- tivum×Agropyron glaucum.The somatic cells in each of these intermediate forms have 28 pairs of chromosomes(2n=56)and the PMCs at diakinesis or metaphase Ⅰ of meiosis have 28 bivalents.The process of meiosis in most PMCs is regular.Lag- ging chromosomes and fragments at anaphase Ⅰ or telophase Ⅰ were observed only in few PWCs.According to our results,all the five intermediate forms of progeny of T.aestivum×Ag.glaucum are allooctoploids.The application of these allooctoploids is also briefly discussed. Explanation of plates 1.Ears of the 5 intermediate forms of progeny of T.aestivum×Ag.glaucum:from left to right—No1.No2.No3.No4.and No5.2.PMC of.intermediate form No2 at diakinesis.×1028 3. PMCs of intermediate form No4:3 normal telophase 1 and 1 abnormal telophase 1 with Chromosome fragments.×665 4.mitotic chromosomes of intermediate form No 1,2n=56×1014 5.mitotic chromosomes of intermediate form No 3,2n=56×1014 6.mitotic chromosomes of intermediate form No 1,2n=56.×688 7.mitotic chromosomes of intermediate from No 2,2n=56.×688 8. mitotic chromosomes of intermediate form No 5,2n=56.×688 9.mitotic chromosomes of inter- medate form No 4,2n=56.×688

研究了小麦×天蓝冰草(Agropyron glaucum)后代五个中间类型的根端细胞染色体数和花粉母细胞染色体构型。每个中间类型的体细胞染色体数皆为28对(2n=56),而减数分裂终变期或中期Ⅰ的花粉母细胞具有28个二价体。大多数花粉母细胞减数分裂过程是正常的。只在少数花粉母细胞中看到后期Ⅰ或末期Ⅰ有落后染色体和断片。作者从观察得出结论,小麦×天蓝冰草后代这五个中间类型都是异源八倍体。对这些异源八倍体的利用作了简短讨论。

2,2-dimethyl-3-isobutenyl-cyclopropane carboxylic acid(i.e.chrysanthemic acid)is an impotent constituent of both the acid fraction of the natural esters pyrethrius and the acid moiety of most of the synthetic pyrethroids. In 1965,Martel and Huynh reported a process for the stereoselective synthesis of trans-chrysanthemic acid. In order to meet the needs of the industrial production,the following improvements have been carried out in our Laboratory.First of all,the three reactions;substitution,addition and cyclization...

2,2-dimethyl-3-isobutenyl-cyclopropane carboxylic acid(i.e.chrysanthemic acid)is an impotent constituent of both the acid fraction of the natural esters pyrethrius and the acid moiety of most of the synthetic pyrethroids. In 1965,Martel and Huynh reported a process for the stereoselective synthesis of trans-chrysanthemic acid. In order to meet the needs of the industrial production,the following improvements have been carried out in our Laboratory.First of all,the three reactions;substitution,addition and cyclization in Martel's process have been simplified so that they can take place successively without any necessity to isolate the intermediate from each step. Secondly,a suitable temperature of the reaction has been found and the reaction time can be greatly shortened from about fourty to sixteen hours.Thirdly,the same solvent has been used in the substitution,addition and cyclization reactions.By means of IR and NMR the product has been confirmed to be trans-chrysanthemic acid.

本文对Martel和Huynh报导的2,2-二甲基-3-异丁烯基环丙烷羧酸(即菊酸)立体选择的合成路线作了适合于工作生产的一些改进:首先将Martel的取代、加成环化三步反应简化为一步;其次,适当提高反应温度使加成环化反应的时间从40小时左右缩短到16小时;最后,使取代、加成环化在相同溶剂中进行反应,从而使溶剂单一化。产品经IR和NMR分析确证为反式菊酸.

The photosynthetic subpathways of five C_4 plants and one CAM plant were distinguished according to their chemical,physiological and cytological characteristics.Based on C_4 acid decarboxylation enzymes,four C_4 plants of Setaria glauca,Sporobolus indicus,Zoysia tenuifolia and Leptochloa chinensis all exhibited the functional high activities of PEP carboxykinase and aspartate aminotransferase as seen in the known PEP-CK subtype.The δ~(13)C value of-12.43% in leaves of L.chinensis was also consistent with that...

The photosynthetic subpathways of five C_4 plants and one CAM plant were distinguished according to their chemical,physiological and cytological characteristics.Based on C_4 acid decarboxylation enzymes,four C_4 plants of Setaria glauca,Sporobolus indicus,Zoysia tenuifolia and Leptochloa chinensis all exhibited the functional high activities of PEP carboxykinase and aspartate aminotransferase as seen in the known PEP-CK subtype.The δ~(13)C value of-12.43% in leaves of L.chinensis was also consistent with that range among PEP-CK subtype.So,these species were classified into PEP-CK subtype.However,their chloroplasts in bundle sheath cells were evenly distributed,not as that displayed centrifugally or centripetally in three typical subtypes.The even arrangement of chloroplasts in bundle sheath cells was likely to be an evolutional intermediate from centripetal (NAD-ME type) to centrifugal types.(NADP-ME and most PEP-CK types). The high activities of NAD-malic enzyme and aspartate aminotransferase,accompanied with the centripetally located chloroplasts,0.057 of quantum yield and the δ~(13)C value of-15.3% in leaves of C_4 dicot Euphobia hirta indicated characteristics of NAD-ME subtype.Moreover, CAM plant Aloe vera clearly fell into PEP-CK sybtype because of its high activity of PEP-CK both in whole leaf and green tissue.

C_4.植物鼠尾粟(Sporobolus indicus),金色狗尾草(Setaria glauca)、细叶结缕草(zoysia tenuifolia)、千金子(Leptochloa chinensis)和 CAM 植物芦荟(Aloe vera)属PEP 羧激酶亚型。C_4双子叶植物飞扬草(Euphorbia hirta)则为 NAD 苹果酸亚型。前面4种 PEP 羧激酶型的 C_4草本植物的维管束鞘细胞叶绿体呈均匀分布,与已知的该型的离心排列不同。认为这可为 C_4植物三种光合亚型的演化关系提供新的证据。

 
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