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In this thesis,the AM1,MNDO,MINDO/3(mainly AM1)and INDO/S-CI semiempirical MO methods were used toinvestigate the excited-state intramolecular protontransfer reactions of salicylic acid derivatives—salicylic acid,methyl salicylate,salicylaldehyde,o-hydroxyaceto-phenone,salicylamide and 3-hydroxy-picolinamide (6 conformers and 2-3 anion species);2-(2'-hydroxy-5' methylphenyl) benzotriazole(4 conformers),2-(2' hydroxyphenyl) benzimidazole (3 conformers and 3anion species),Bis-2,5-(2-benzoxazolyl)hydroquinone(3 conformers),2-(2'-hydroxyphenyl)benzothiazole(2conformers) and 7-azaindole dimer (2 conformers).Theinvestigations were described as follows.Geometry optimization,relative stability andhydrogen bonding energy First,for sylicylic acid derivative molecules,the AM1,MNDO and MINDO/3 methods were used toinvestigate ground-state geometry optimization,energies,relative stabilities and hydrogen-bondingenergies on the five kinds of the molecules(designing 6 conformers and 2-3 anion species).Comparing with experimental data,the optimizedgeometry,the order of stability,the hydrogen-bonding energies and the distances between O-O in O-H..O hydrogen bonds by AM1 method were in agreementwith the experimental data,however,the C-C bondlengths optimized by MNDO and MINDO/3 were longer,C-O and O-H bond lengths were shorter;for C-N bondlengths,the results opitimized by MNDO method werethe same as those by AM1 method,nevertheless the C-Nbond lengths given by MINDO/3 method were muchshorter.For some sylicylic acid derivatives(e.g.methyl salicylate,salicylamide),the order ofstabilities on the conformers given by MNDO andMINDO/3 methods were not in agreement with theexisting conformers deduced by experimental methods,and the hydrogen bonding energies calculated by MNDO.and MINDO/3 methods were smaller.Second,the studyon the other systems found that the optimizedgeometry of the proton-transfered product with INDOmethod could not be obtained,only could theoptimized geometry of reactant be obtained,and thecalculated hydrogen bonding energies were greater.Many results of calculation indicated that the studyon the excited-state intramolecular proton transferreaction system using AM1 method was suitable andreliable.
本论文用AM1、MNDO、MINDO/3(主要是AM1)和INDO/S-CI半经验分子轨道方法对水杨酸衍生物系列——水杨酸、水杨酸甲酯、水杨醛、O-羟基乙酰苯酮、水杨酰胺和3-羟基吡啶酰胺(6种异构体和2-3种阴离子);2-(2'-羟基-5'-甲基苯基)苯并三〓唑(4种异构体);2-(2'-羟基苯基)苯并咪唑(3种异构体和3种阴离子);2,5-二间氮杂氧茚氢醌(3种异构体);2-(2'-羟基苯基)间〓杂硫茚(2种异构体)和7-〓吲哚二体(2种异构体)的激发态分子内质子转移反应在以下几个方面进行了较系统的理论研究:几何构型优化和相对稳定性及氢键能首先以水杨酸衍生物系列分子为例,用AM1、MNDO和MINDO/3方法考察了5种分子(每种分子设计6种异构体和2-3种阴离子)的基态几何构型优化,能量、相对稳定性和氢键能计算,通过和实验数据进行比较,AM1方法给出的优化几何构型、稳定性次序、氢键能和O—H。。。O氢键的0—0距离与实验数据吻合最好,MNDO和MINDO/3方法优化的C-C键长偏长,C-O键和O-H键长偏短;对于C-N键长,MNDO和AM1优化结果差别不大,而MINDO/3给出了过短的C-N键长,MNDO和MINDO/3方法给出的有些水杨酸衍生物分子(如水杨酸甲酯和水杨酰胺)异构体的稳定性次序和实验上推测的可存在异构体结果不一致,MNDO和MINDO/3方法给出的氢键能偏低,对其他体系的研究发现INDO方法常常不能得到质子转移产物的优化几何构型,只能得到反应物的优化构型,并且估算的氢键能偏高,大量的计算结果表明AM1方法对本论文研究的激发态分子内质子转移反应体系是适宜和可靠的。
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Isolations of the s.aureus insoluble peptidoglycan:(1) the s.aureus insoluble peptidoglycan was gained by cold, hot and hypersound affection repetat of s.aureus(ATCC25923);(2) the s.aureus insoluble peptidoglycan was gained by 10% trichloracetic acid, 5% trichloracetic acid,NH4HCO3 buffer with trypsin digestion of s.aureus(ATCC25923) in order. 2. Isolations of the s.aureus soluble peptidoglycan and quality control:(1) the s.aureus soluble peptidoglycan was released by short dose benzylpenicillin sodium and purified by sephadex G-100.(2) The quality control in the process of isolation: the soluble peptidoglycan was detected by SLP reagent kit; the LPS was detected by kinetic turbidimetric limulus test;and the protein was detected by improved LOWRY reagent kit.
金黄色葡萄球菌可溶性肽聚糖的分离提取及其质量控制(1)采用青霉素钠诱导法和葡聚糖G-100(Sephadex G-100)凝胶柱分离提取金黄色葡萄球菌可溶性肽聚糖;(2)金黄色葡萄球菌可溶性肽聚糖提取过程中的质量控制:采用SLP试剂盒对提取物定性检测,应用动态浊度法鲎试验测定提取物中内毒素含量,采用改良LOWRY试剂检测提取物中蛋白的含量;(3)采用青霉素诱导和Sephadex G-100凝胶柱分离提取金黄色葡萄球菌可溶性肽聚糖的条件:青霉素使用量、加入青霉素后孵育时间和菌液浓度等优化选择。
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Floral organ determination is best explained by the ABCDE model postulated by genetic studies of Arabidopsis thaliana. Sepals are determined by A and E class genes; petals are determined by A, B, and E; stamens by B, C, and E; and carpels by C and E class genes. A, B, C, and E class gene lineages are known having duplicated several times during the evolution of angiosperms. One of the noted major duplication events occurred in the origin of the early angiosperms, leading to the formation of subgroups of B/C/D/E class. Another one occurred near the basal eudicots and gave rise to further subgroups in A/B/C/D/E class genes among core eudicots. The phylogenetic position of the family Buxaceae is located right where the second major duplication of ABCDE genes might have occurred, which is supported by multiple gene (nuclear 18S rDNA, chloroplast rbcL and atpB) phylogenetic analyses.
目前经由模式植物阿伯芥的研究,建花部器官决定基因的调控,即花萼由A、E 群基因共同决定,花瓣由A、B、E 群基因,雄蕊由B、C、E 群基因,而心皮由C 和E 群基因决定。A、B、C、E 四群基因在被子植物的演化过程中发生过次的复制事件,其中比较重要的一次发生在早期被子植物演化出之时,形成B/C/D/E 群基因的次系群;另一次复制事件则发生在真双子植物基群附近,形成仅於核心真双子植物的A/B/C/D/E 群基因之次系群。
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What\'s more, different intervals of UV have their own characters in influencing DNA: the damage to some bases by UVA may be more serious than that by UVB, and UVB did more severe damage to some deoxyribose than UVA; however, as far as the pyrimidine bases are concerned, the damage by UVB is by far more serious than that by UVA. These results may indicate that there are preferential damaging sites on DNA molecules caused by UVA and UVB irradiation. Moreover, with UVA or UVB irradiation for a long time, the photoreactivation of DNA occurred. The serious damage to deoxyribose and bases by UVB and UVC may confirm the conformation of cyclobutane pyrimidine dimers and (6-4) photoproducts.
而不同波段紫外辐射对DNA的损伤各具特点并且差异明显,UVA对一些碱基的损伤比UVB要严重,而UVB在对脱氧核糖和磷酸盐的损伤上又比UVA要严厉,但就嘧啶碱基来说,UVB对它的损伤远大于UVA,这似乎表明了不同的紫外波段对生物大分子DNA的损伤是有选择性的。
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Furthermore, the complications detected by spiral CT and chest radiography were as follows: emphysema was detected in 11 cases by CT and six by radiography; pulmonary tuberculosis was detected in five cases by spiral CT and three by radiography; lymph node enlargement or calcification in mediastinum or pulmonary hilus were detected 21 cases by CT and 15 by radiography.
CT检出矽肺并发肺气肿11例,X线胸片检出6例;CT检出矽肺并发肺结核5例,X线胸片检出3例;CT检出矽肺并发纵隔和肺门淋巴结大或钙化21例,X线胸片检出15例。
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Furthermore, the complications detected by spiral CT and chest radiography were as follows: emphysema was detected in 11 cases by CT and six by radiography; pulmonary tuberculosis was detected in five cases by spiral CT and three by radiography; lymph node enlargement or calcification in mediastinum or pulmonary hilus were detected 21 cases by CT and 15 by radiography.
CT检出矽肺并发肺气肿11例,X线胸片检出6例;CT检出矽肺并发肺结核5例,X线胸片检出3例;CT检出矽肺并发纵隔和肺门淋巴结或钙化21例,X线胸片检出15例。
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By using two-stage separations indicates that, the content of total ketones compound by one stage separation is 12.14%, far lower than 54.95% by two-stage separations, and the content of pulegone and menthone increases from 3.37% and 3.46% by one-stage separation to 19.34% and 22.95% by two-stage separations respectively. But the content of the long chain unsaturated fatty acid and its ester ingredient reduces from 41.58% and 18.88% by one stage separation method to 29.06% and 9.86% by two-stage separations method respectively, also the phenol compound by two-stage separations method can been separated completely.
对荆芥挥发油采用两级分离的研究表明:酮类化合物的总含量由二级分离的54.95%远高于一级分离的12.14%,其中胡薄荷酮和薄荷酮的含量分别由一级分离的3.37%和3.46%增加到二级分离的19.34%和22.95%,而长链不饱和脂肪酸及其酯类成分含量分别从一级分离法的41.58%和18.88%降低到二级分离法的29.06%和9.86%,且二级分离法已完全除去酚类化合物。
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The thesis hold the viewpoints as follows: Dong zhong-shu inherited the ideology of Confucianist School in pre-Qin days by adopting the thought of "Grand Unification","Policy of Benevolence" and "Neutral Political Point", absorbed the ideology of Taoist School by accepting the thought of "Rule by Nonaction" in the relationship of monarch-ministers and monarch-people, incorporated the ideology of Mohist School by embracing the thought of "Heaven"s Will" and "Unify to One", assimilated the ideology of Legalist School by drawing the thought of "Being Dominated by Morals with the Assistance of Penalty" and "Unify to Laws, merged the ideology of Yin-Yang School by assuming the thought of Yin-Yang and the Five Elements.
本文认为:在&大一统&论、德治论、&中和&论等方面,董仲舒继承了先秦儒家的&定于一&、&施仁政&、&致中和&等思想;在君臣关系、君民关系等方面,董仲舒吸收了道家的&无为而治&思想;在&天志&论、&大一统&论等方面,董仲舒兼容了墨家的&天志&、&上同于一&等思想;在&德主刑辅&论、&大一统&论等方面,董仲舒汲取了法家的&德刑并用&、&天下统一于法&等思想;在&天&的范畴、君主独尊地位的合理性、&尊德卑刑&论、&三统说&等方面,董仲舒融合了阴阳家的阴阳五行学说。
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The CFb in blank control group was added with IMDM containing 10% FBS and those in Ang Ⅱcontrol group with Ang Ⅱ.The CFb in the 3 test groups were induced with Ang II,then added with Tau at dosages of 40,80 and 160 mmol/L respectively. Determine the proliferation of CFb by MTT method, the collagen content by oxyproline kit, the transforming growth factor- TGF-β1 (TGF TGF-β1) content by ELISA, the cell cycle by flow cytometer, the CFb NO content by nitrate reductase method, the iNOS activity by spectrophotometry, and the expression of iNOS protein by IFA.
胰酶消化法分离培养新生大鼠CFb,用Ang Ⅱ诱导促进其增殖,采用MTT法检测细胞增殖;羟脯氨酸试剂盒检测胶原含量;ELISA法测定转化生长因子β1(TGF-β1)蛋白的含量;流式细胞仪检测细胞周期;硝酸还原酶法、分光光度法和免疫荧光法检测CFb NO含量、一氧化氮合酶活性和iNOS蛋白的表达。
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After the cell growth curves was recorded, RPE cells of the 3-5th passages were utilized. 2、Three different siRNA (siRNAl,siRNA2,siRNA3) targeting against human cx43 gene and one negative control siRNA were designed and transfected into cultured human RPE cells via liposome reagent. The most effective siRNA can be determined by semi-quantitative reverse transcription PCRRT-PCR. 3、To the most effective siRNA, after transfected into human RPEs with different concentration, the cellular proliferate activities were messured by MTT colorimetry ; the percentages of RPE in different cell circle phase was assayed by FCM; the changes of phenotypical properities were observed with SCM; the protein expression of cx43 was studied through immunocytochemistry stain and Weston blot; the communication intercellular was calculated with FRAP; and the ability of recovery was assessed by using an in vitro wound healing model.4、The total proteins of siRNA1 and RPE were seperated by two-dimensional gel electrophoresis and visualized by silver staining. Proteins with significant expression alterations were selected and their peptide mass fingerprints (PMFs were obtained by matrix-assisted laser desorption/ionization time of flying mass spectrometry (MALDI-TOF-MS).The PMFs were used to search NCBInr database by Auto MS-Fit software.
实验方法:1、培养原代的人RPE细胞,经过细胞角蛋白、S-100和神经胶质原纤维酸性蛋白免疫细胞化学鉴定后,通过AO/PI染色技术确定培养细胞的存活率,描记其生长曲线,第3-5代用于以下细胞实验2、生物合成针对人cx43基因的三条小干扰RNA和一条阴性RNA通过脂质体转染RPE细胞后,通过RT-PCR的方法确定抑制效率最高的干扰片断3、将该片段以不同浓度通过阳离子脂质体转染培养的人RPE细胞后,采用MTT法观察其对细胞的增殖力的作用;通过流式细胞仪观察其对细胞周期的影响;通过扫描电镜观察其对细胞形态的影响;通过免疫细胞化学和Weston blot观察其对cx43蛋白表达的作用;采用激光共聚焦和荧光淬灭恢复技术观察荧光恢复速率平均百分率,评价其对细胞间通讯功能的影响;通过制作RPE细胞损伤模型,观察其对损伤修复能力的作用4、分离纯化转染siRNA的RPE组和正常对照组RPE细胞的全部蛋白质,应用等电聚焦电泳和SDS-PAGE双向电泳技术,银染显示分离出的蛋白质斑点,经凝胶图像分析软件对两个样本进行胶图分析,寻找差异蛋白点。
- 相关中文对照歌词
- In The Sweet By And By
- By Heart, By Soul
- By & By
- In The Sweet By And By
- By & By
- Piece By Piece, Frame By Frame
- Sweet By And By
- In The Sweet By And By
- By And By
- I Want To Be Loved By You (But Only By You)
- 推荐网络例句
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This one mode pays close attention to network credence foundation of the businessman very much.
这一模式非常关注商人的网络信用基础。
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Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.
扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。
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There is no differences of cell proliferation vitality between labeled and unlabeled NSCs.
双标记神经干细胞的增殖、分化活力与未标记神经干细胞相比无改变。