查询词典 N.G.

Main results are following: Let G be a finite solvable group and N be a normal subgroup.

即：设G是一个有限可解群，H为G的正规子群。

ResultsThe linear range of guanosine was within 0.048～0.480 μg,r=0.999 9,the RSD of recovery(n=9) was 2.94%.

结果鸟苷在0.048～0.480 μg范围内线性关系良好，r=0.999 9，腺苷在0.045～0.449 μg范围内线性关系良好，r=

We investigate the order of approximation for Gn and G*n to |x|.

当f二}xl时，我们研究G。和G二对}x{的逼近阶。

N- L c; u3 E- F3 G8 n John is such a windbag.

g j# J5 n 约翰是一个饶舌大王。

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。

Furthermore, single-point energy calculations were refined at the QCISD level of theory with the same basis set (6-311++G**). As a result, the singlet reaction of silylene with isothiocyanic acid contain S-atom abstraction channel, N—H inserted channel, and NH abstraction channel, respectively.

又用QCISD/6-311＋＋G**//B3LYP/6-311＋＋G**方法计算了各个驻点的单点能，计算结果表明单重态的硅烯与异硫氰酸的反应有抽提硫、插入、抽提亚氨基的路径。

During the ESR study of the effects of oxLDL on the ESR signal intensity of hydroxyl radicals in collagen (2 μg/ml)-activated platelets, we found that incubation of human platelets with collagen produced a typical four-line hydroxyl radical signal and a long-lived g = 2.005 radical detectable by spin trapper 5,5-dimethyl-1 pyrroline N-oxide.

在研究oxLDL降低由collagen 〈2 μg/ml〉刺激血小板产生的氢氧自由基〈OH●〉的ESR讯号强度的同时，我们发现以DMPO当自由基捕捉剂，collagen除了刺激血小板产生一个四线的典型氢氧自由基之外，还产生一个长半衰期 g = 2.005的自由基。

Ve schizophrenic inpatients will be enrolled into the 6-week, randomized, double-blind trial of sarcosine monotherapy (1000~3000 mg/day, N=75) vs. risperidone (2~6 mg/d, N=75). We will measure clinical efficacy and side effects biweekly during the treatment. At the beginning and the end of the trial, we will also measure cognitive function (e.g. intellect, attention, memory, executive function), serum amino acids, expressions of mRNA (by realtime quantitative RT-PCR) and protein of NMDA-related genes (such as SHMT2, AMT, PSAT1, ASCT1, and serine racemase) in peripheral blood lymphocytes.

第一部份将收案150位未曾治疗之精神分裂症住院患者，以双盲方式随机给予六周sarcosine (1000-3000 mg/day，N=75)或risperidone (2-6 mg/day，N=75)治疗，我们将每两周评估临床疗效与安全性，并在研究开始及结束时，评量认知功能(智能、注意力、记忆力、执行功能)并测定血清中glycine或D-serine浓度以及SHMT2、AMT、PSAT1、ASCT1、serine racemase等基因於周边淋巴球之mRNA (以realtime RT-PCR测定)与蛋白质表现量。

Methods Ninety ASA Ⅰ~Ⅱ patients undergoing UPPP surgery were randomly divided into three groups: F group (fentanyl 10 μg/kg), FL group (fentanyl 5 μg/kg + lornoxicam 0.4 mg/kg), or TL group (tramadol 5 mg/kg + lornoxicam 0.4 mg/kg). The drugs were diluted with normal saline to 100 mL (background 2 mL/h, PCIA bolos 1.5 mL, lockout time 15 min).

90例择期行UPPP的阻塞性睡眠呼吸暂停综合征（obstructive sleep apnea， syndrome， OSAS，即鼾症）患者，ASAⅠ~Ⅱ级，随机分为3组(n=30)，F组：芬太尼10μg/kg；FL组：芬太尼5μg/kg+氯诺昔康0.4mg/kg；TL组：曲马多5mg/kg+氯诺昔康0.4mg/kg；每组镇吐药物均为氟哌啶5mg，均以生理盐水稀释至100mL，背景剂量2mL/h，PCIA1.5 mL/次，锁定时间15min。

A novel guar gum-g-poly superabsorbent was synthesized by the solution copolymerization between natural guar gum and acrylic acid using ammonium persulfate as an initiator and N,N′-methylenebisacrylamide as a crosslinker.

以天然瓜尔胶和丙烯酸为原料，过硫酸铵为引发剂，N，N′-亚甲基双丙烯酰胺为交联剂，采用水溶液聚合法制备了瓜尔胶接枝聚丙烯酸高吸水性树脂。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。