查询词典 2-butene

Three alicyclic dianhydrides, 1,2,3,4-cyclobutanetetracarboxylic dianhydride, 1,2,4,5-cyclopentanetetracarboxylic dianhydride, and 1,2, 4, 5-cydohexane tetracarboxylic dianhydride were polymerized with two aromatic diamines, 1,4-bis (4-amino-2-trifluoromethylphenoxy) benzene (6FAPB, a) and 4, 4'-bis(4-amino-2-trifluoromethyl phenoxy) biphenyl (6FBAB, b) respectively, via a two-step polycondensation procedure to afford two series of fluorinated semi-alicyclic polyimides.

分别将脂环族二酐单体1，2，3，4-环丁烷四酸二酐、1，2，4，5-环戊烷四酸二酐和1，2，4，5-环己烷四酸二酐与芳香族含氟二胺1，4-双（4-胺基-2-三氟甲基苯氧基）苯(6FAPB， a)和4，4'-双（4-胺基-2-三氟甲基苯氧基）联苯(6FBAB， b)反应制备两个系列的含氟半脂环族聚酰亚胺，研究了PI薄膜的热性能和光学性能。

The cytotoxicity of these compounds were valuated by MTT and SRB methods using three cancer cell lines: HL-60, A-549, P-388. Cyclo-shikonin, and cyclo-alkannin have high cytotoxicity against HL-60.The chiral center of side chain has no effect on their activity. 2- 1-(Acetyloxy-4-methyl-3-pentenyl -5, 8-dihydroxy-1, 4-naphthoquinone (105) has strong inhibition effect on P-388 cells. 2- 1-(isooctyloxy-4-methyl-3-pentenyl -5, 8-dihydroxy-1, 4-naphthoquinone (108) and 2- 1-(2-furoyloxy-4-methyl-3-pentenyl -5, 8-dihydroxy-1, 4-naphthoquinone (112) have high inhibition on A-549.Shikonin (1), alkannin (2), and their derivatives have the structural features of a planar chromophores and short side chain. We examined the ability to inhibit the telomerase.

抗肿瘤活性初步筛选测试采用小鼠白血病P-388肿瘤细胞和人肺癌A-549肿瘤细胞进行，结果表明侧链羟基的手性对抗肿瘤活性无明显影响；有数个化合物具有很好的体外抑制活性，特别是化合物2-（1-异辛酰氧基-4-甲基-3-戊烯基）-5，8-二羟基-1，4-萘醌（108）和2-[1-（2-呋喃甲酰氧基）-4-甲基-3-戊烯基]-5，8-二羟基-1，4-萘醌（112）体外显示对人肺癌A-549肿瘤细胞有强效；2-（1-乙酰氧基-4-甲基-3-戊烯基）-5，8-二羟基-1，4-萘醌（105）对小鼠白血病P-388肿瘤细胞有强效；环紫草素和环异紫草素对人白血病HL-60细胞有强烈抑制作用。

Tins article will tell us the functions of CAI in English classroom teaching:1. the functions in English classroom teaching1. 1 enrich the teaching contents and change the monotonous design of traditional teaching1. 2 arouse the students interest and stimulate the studyintention1.3 make initiative study change into passive study1.4 lighten the students schoolwork2. the functions in modern education2. 1 remedy the differences between different schoolsand areas 2. 2 improve the process of teaching management2.3 enrich the reading matter of the outside class2.4 develop the long-distance education by using the multimedia and internet technologyBecause there are so many advantages about multimedia. many schools construct campus net and multimedia classrooms. Then designing and making CAI software became an important problem for these schools, so these article can tell us how to design and make it. In order to make CAI software better, the articled also tell you how to pay attention to something .That is the content of my article , I hope I ran consult it with you .Thank you.

充分运用现代教学技术武装我们的教学，对原有的教学生产方式来一场革命，这是教育实践的呼唤，也是时代的呼唤，本论文从多媒体在英语课堂教学中的作用出发，来说明运用多媒体进行计算机辅助教学的作用： 1 在英语课堂教学中的作用 1.1 丰富教学内容改变传统教学的单调模式 1.2 激发学习兴趣促进学习动机 1.3 变被动学习为主动学习有效体现教学的个体化和因材施教 1.4 为教师提供形象的表达工具有效地减轻学生的课业负担 2 现代教育中的作用 2.1 弥补不同学校、地区之问教学质量的差异 2.2 改善教学管理过程改进教学效果 2.3 丰富的课外读物 2.4 多媒体技术与网络技术的结合可有效地开展远距离教育正因为多媒体具有这么多的优点，所以许多学校多投资兴建了校园网和多媒体教室，如何设计和制作高质量的多媒体课件是许多学校迫切需要解决的问题，所以本文接下来谈论的是如何设计和制作多媒体课件以及在设计和制作过程中如何应用心理学上的注意规律等，仅供各位同行参考。

The chelate structure was examined by AFM scaning, single strand structure at AFM gram is Ala-Gln, two combined single strand is Ala-Gln-Zn~(2+), and atomic radius of Ala-Gln-Zn~(2+)'s conjunctive atom is about 0.24 to 0.25nm, which is near to Zn~(2+), so the conjunction atom is Zn~(2+). Thus the coordination reaction and the molar ratio 2:1 is proved again.

原子力显微扫描指出，大量出现的单一弯曲链状结构是Ala-Gln分子，而两两组合连接的链状结构，则是Ala-Gln-Zn~(2+)螯合物，且连接两个链状结构、半径约为0.25nm的中心原子是Zn~(2+)，证明Ala-Gln与Zn~(2+)形成配位比为2：1稳定螯合物。

DPR of Atriplex canescens in differenttreatments are quite different, 2.87μmolm~(-2)s~(-1) under no soil water stress, 6.46μmolm~(-2)s~(-1) under light soil water stress, 6.06μmolm~(-2)s~(-1) under medium soil waterstress, 3.04μmolm~(-2)s~(-1) under heavy soil water stress. Comparing with the DPRunder light soil water stress, DPR decreased by 6.19% under medium soil waterstress, by 52.94% under heavy soil water stress and by 55.57% under no soil waterstress.

不同土壤水分胁迫下四翅滨藜的DRR表现出显著的差异，无土壤水分胁迫下DRR为2.87μmolm~(-2)s~(-1)，轻度土壤水分胁迫的DRR为6.46μmolm~(-2)s~(-1)，中度土壤水分胁迫的DRR为6.06μmolm~(-2)s~(-1)，重度土壤水分胁迫的DRR为3.04μmolm~(-2)s~(-1)，以轻度土壤水分胁迫为基础中度土壤水分胁迫下降了6.19％、重度土壤水分胁迫下降了52.94％、无土壤水分胁迫下降了55.57％。

Milene music inc Transcribed by paul gongola Whatever happened to good time sally I don't see her 'round no more She used to be all over me It ain't like that no more Sally had the best game there was in town Now the good girl just can't be found Whatever happened to good time sally I don't see her 'round no more The heat is on, everybody has gone underground The heat is on, everybody hiding out just like jesse james My old home town Lord, it don't seem the same Well, I walked in this place, I was just lookin' for a game Everybody here wanted to know my name I said hush, hush up your mouth, I'll introduce my own self To this house I was born in the back woods, I was raised up like a slave Having me a good time now is all I crave I spotted me a barroom queen, skin tight blue jeans That same old midnight show I took her to the side and I said I won't be satisfied Until you tell me everything you know Whatever happened to big time buddy I don't see him 'round no more I heard tell that they got him in jail But I don't know what they got him for They caught him with an airplane Talkin' 'bout some cocaine Nobody knows for sure Whatever happened to good time buddy I don't see hem 'round no more The heat is on, everybody has gone underground The heat is on, everybody hiding out just like jesse james My old home town Lord, it don't seem the same [size=-2][size=-2][size=-2][size=-2][size=-2]Let The Music Take Control (Hiro's Groove)- Hiro-kun's Theme Everybody needs a hero Whose not afraid to start from zero Somebody who will stand up When everyone is falling down Hiro will stand his ground Stay Hiro is on the way He's grooving, prooving He knows how to live Stay Hiro is on the way He's got a whole lot of Soul to give * Dacing like a hero HIro let your body go Dancing like a hero Let the music take control Even if you Dace 'till you're the last one standing You won't be alone Dancing like a hero When the groove is in your bones Hiro Yeah you know he's got the power To get in the groove and rock for hours He's ready and he's able Just keep turning those tables on He'll boogie all night long

这里的每个人都想知道我的名字我说：嘘，嘘你的嘴，我将介绍一下我自己这房子我出生在丛林，是我，就像一个奴隶我现在有了一段美好的时光是我渴望我发现我的王后，皮肤紧了酒吧间更蓝色牛仔裤那个老午夜表演我带她到一边和我说我不会满意直到你告诉我，你知道的一切不管发生了一次大群组我看不出他的圆我听说他们得到了他在监狱但我不知道他们得到他他们发现他和一架飞机废话'布特有些可卡因没人知道不管发生什么事，好时光好友我看不出有任何更多的圆边热是，每个人都已经在地下热是，每个人都躲就像杰西·詹姆斯我的旧的家乡耶和华阿，这似乎不太一样 [2][尺寸大小== 2][2][尺寸大小的=== 2]，[2]的大小让音乐带控制- Hiro-kun的主题每个人都需要一个英雄谁不害怕开始从零吗有人会站起来当每个人都要塌下来吗宏会忍受他的地保持宏已经在路上了他的槽，这种皮革被证明他知道如何生活保持宏已经在路上了他有一大堆灵魂*邻台铁大庆像个英雄让你的身体去。宏跳舞，像个英雄让音乐带的控制即使你戴斯直到你最后一站你不会感到孤独跳舞，像个英雄在你的槽的时候骨头呢宏是的，你知道他所拥有的权力对进入工作状态和摇滚了好几个小时他已经和他的能力只是不停地转动那些桌子上他会彻夜跳舞

Methods 4-Hydroxy- benzonitrile was treated with sodium hydrogen sulfide and anhydrous magnesium chloride in dimethyl formamide to give thioamide, which was then directly cyclized with ethyl 2-chloroacetoacetate without separation to give ethyl 2-(4-hydroxyphenyl)-4-methylthiazole-5-carboxylate(2) in one-pot; then 2 was formylated with Duff reaction adopting hexamethylenetetramine in trifluoroacetic acid to give ethyl 2-(3-formyl-4-hydroxyphenyl)-4-methylthiazole-5-carboxylate(3); finally, the target compound was obtained by the treatment of 3 with hydroxylamine hydrochloride and sodium formate in formic acid.

采用"一勺烩"方法，以4-羟基苯甲腈为起始原料，首先与硫氢化钠和无水氯化镁在N，N-二甲基甲酰胺中反应，所得中间体不经分离，直接加入2-氯乙酰乙酸乙酯进行环合反应，得到2-(4-羟基)苯基-4-甲基-5-噻唑甲酸乙酯（2）；然后通过六亚甲基四胺/三氟乙酸进行Duff反应，得到2-(3-甲酰基-4-羟基)苯基-4-甲基-5-噻唑甲酸乙酯（3）；再经盐酸羟胺/甲酸/甲酸钠体系脱水得到目标化合物。

Temporarily catheterization pulls out inside 24 H ureter, if undertake uric education or acute retention of urine wait,adopt temporarily catheterization; leaves buy catheterization to be in clinical on common, ureter needs to leave above of buy 24 H, urethral mouth is daily want clean disinfection 2 times, daily change 1 times; keeps bag of collect make water or drainage bottle the person that buy catheter exceeds 7d, change every week ureter 1, with 0 · normally according to the circumstance of fluid of eduction make water 9% physiological saline undertake bladder is rinsed. 2 common problems patient of a few males is opposite circumstance of the psychogenic disorder when 1 catheterization of 2 · nurse catheterization produces psychogenic disorder, often be flushed, next abdomen and perineal ministry muscle are nervous, shadow fugleman make water goes on wheels, impact of urgenter to the illness patient psychogenic disorder is not big, ache and bladder are bouffant the mood that held them, catheterization process is more successful. 2 · 2 see the phenomenon is cracked below road junction of female patient make water occasionally 20 old clinical nurse in the job, the female cracks a circumstance to see 4 below urethral mouth.

临时导尿在24 h内拔除尿管，如进行尿培养或急性尿潴留等采取临时导尿；留置导尿在临床上常见，尿管需留置24 h以上，尿道口每日要清洁消毒2次，每日更换集尿袋或引流瓶1次；留置导尿管超过7d者，每周更换尿管1次，根据排出尿液的情况通常以0·9%生理盐水进行膀胱冲洗。2常见新问题2·1导尿时心理障碍情况一些男性患者对护士导尿产生心理障碍，往往面红耳赤，下腹部及会阴部肌肉紧张，影响导尿顺利进行，对于病情较急的患者心理障碍影响不大，疼痛和膀胱鼓胀占据了他们的情绪，导尿过程较顺利。2·2偶见女性患者尿道口下裂现象20多年的临床护理工作中，女性尿道口下裂情况见4例。

My company can provide pesticide, medicine, veterinary medicine intermediates, have 48 kinds of products (p-Bromo-p-Bromotoluene bromoform 1 - bromo-heptane Triethyl Citrate 1,2,3 - three Bromopropane 3 - Chlorine -4 - fluoro bromobenzene Bromotoluene ethylbenzene 4 - bromo -2 - bromo-ethyl-Chloroaniline 2 - bromo--5 - chloro-toluene 3 - bromo-C methyl 1,6 - dibromo-hexane 1 - bromo --4 - p-methoxy benzaldehyde o-bromo-acetic acid propyl bromide p-fluorotoluene dodecane four bromoethane of iodine bromide toluene tert-butane Tributyl Citrate 2 - bromo-p inter - Hydroxybenzaldehyde bromine butane 2 - bromo-propionic acid bromide veratryl aldehyde inter-bromo-trifluoro-n-hexane of toluene on Bromoxynil Bromotoluene toluene ethylbenzene o-bromophenol bromide Cyclohexane Cyclopentane bran bromate bromide Malay Dibutyl Ethyl Lactate Propylene between bromine bromine bromine between aniline o-anisidine o-fluorophenol difluorobenzonitrile to aminobenzaldehyde Bromotoluene aniline on Bromobenzaldehyde Bromotoluene acid) expressed the hope that customers contact us!

我公司可提供农药，医药，兽药中间体，有四十八种产品(对溴苯酚对溴甲苯溴仿 1-溴庚烷柠檬酸三乙酯 1，2，3-三溴丙烷 3-氯-4-氟溴苯对溴乙苯 4-溴-2-氯苯胺溴乙酸乙酯 2-溴-5-氯甲苯 3-溴丙酸甲酯 1，6-二溴己烷 1-溴-4-硝基苯邻甲氧基苯甲醛溴乙酸丙酯对氟甲苯溴代十二烷对碘甲苯四溴乙烷溴代叔丁烷柠檬酸三丁酯 2-溴氯苯间羟基苯甲醛溴丁烷 2-溴丙酸黎芦醛溴已烷间溴三氟甲苯对溴苯腈对溴乙苯邻溴甲苯溴代环已烷溴代环戊烷糠溴酸马来酸二丁酯溴丙烯乳酸乙酯间溴苯胺间溴苯甲醚邻氟苯酚邻氟苯腈对氨基苯甲醛对溴苯胺对溴苯甲醛对溴苯甲酸)希望广大客户与我司联系！

The main products are: HH-01 fungicides HH-02 organic dispersant HH-03 cationic starch Wood HH-04 cationic starch Department HH-05 modified starch warp sizing agents also sell German Baker Chemical Co., Ltd. Main Products Defoamer series product: E640, T50 Surface Sizing Agent: A281, A288, K532, pesticides / medicine / veterinary medicine a variety of intermediate products (p-Bromo-p-Bromotoluene bromoform 1 - bromo-heptane triethyl citrate 1,2, 3 - Three Bromopropane 3 - chloro -4 - fluoro bromobenzene Bromotoluene ethylbenzene 4 - bromo -2 - bromo-ethyl-Chloroaniline 2 - bromo--5 - chloro-toluene 3 - bromo-methyl 1,6 C - Dibromo Hexane 1 - bromo -4 - nitrobenzene o-methoxy benzaldehyde acid propyl bromide p-fluorotoluene bromo dodecane toluene four of iodine bromide bromoethane three citric acid tert-butane n-butyl 2 - bromo-p-bromo-butane Hydroxybenzaldehyde between 2 - bromo-propionic acid bromide veratryl aldehyde inter-bromo-trifluoro-n-hexane of toluene on Bromoxynil Bromotoluene toluene ethylbenzene o-bromophenol bromide bromide Cyclohexane Cyclopentane bran acid dibutyl maleate Ethyl Lactate Propylene between bromine bromine bromine between aniline o-anisidine o-fluorophenol difluorobenzonitrile to aminobenzaldehyde Bromotoluene aniline on Bromobenzaldehyde Bromotoluene acid) and other relevant units have been in substantial promotion, and client set up a good relationship of cooperation has been the user's praise.

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By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。