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1.
《天津师范大学学报(自然科学版)》2001,(4)
· No.1·3D-QSAR Studies of Photosystem II Inhibitors LIU Xiao-lan,YANG Xia,LIU Xiao-hong,etal ( 1)………………………………………………Principle and Application of Sol-Gel Method HONG Xin-hua,LIBao-guo( 5 )………………………………………………………………………Study on Inhibition of Rh( ) for Chemiluminescence of H2 O2 -Cu( ) and Determination of Microamount RhodiumHU Cheng-wen,CHEN Jing,WANG Juan,etal( 9)………………………………………………………………………………………… 相似文献
2.
《西安交通大学学报》1988,(6)
·DePartment of Mathematies·On Bifuroation Curvoo of Sy。七em(E盆)Having Sy二二o七ry Cen七r。, Saddlo Poin七吕and Fino Foeu吕e3 D。呵Y椒落MaZ从‘肌Wa呵E娜俪介·················……1(47)The Smoo七加。吕3 of tho Solu七ion of Soeond Ordor Difforen七ial Equa毛ion with Nonnogativo Cha抓。七。过。tio。 Y‘Fa而哪“么··~···························································……7(109)The Struoturo and ExPlio… 相似文献
3.
《南京林业大学学报(自然科学版)》1991,34(1):115
NO.1Chemical Characteristics ofHumus in Forest Soils ofNanjing—ZhCnjiang Hills……………………………………………………………… ··,…L。c为aq巾。a7企Luo二“刀川旧(l)Analysis for Endogenous Hormones n Poplar Populus Dcltoides Bartr.c.v.‘Lux’(ex.I—69/55) BuddurmgDormanCy and itsKdease”…··“’··’·”’··”·”’·”Z片uyong伽us& Wb Guanmmp(7)PUrification and Properties of L—Leucinc Aminotransferasc from Black Locust Seedlings………………………… 相似文献
4.
《江西科学》1993,(4)
Vol.11 No.IMar,1993 ·THEORETICAL PAPERS·Generalized Noet1ler’s Theoreat and Inverse Problem of Nonholonomlc Dynamics………………………………………,……………·’… M占】Fengxlang(1)GIOb81 SOlttkioflS fof 8 C13SS Of NOttl巾e&f sChf砧hgtf EqustlODS………………………………………………………… ··,………………Met Ming(7) ·RESEARCH REpORTS·Further ProoS on the connectedness of Topologlcal Boolean Lathce………………………… ·,…………………………………………-l( 13)St… 相似文献
5.
此书为李嘉图经济著作之第七种.其他六种为 1.David Ricardo: On the Principles of Political Economy and Taxation,1817 2.Works of David Ricardo, edited by J.R. McCulloch,1846 3. Letters of Ricardo to Malthus (1810-1823), edited by J.Bonar, 1887 4. Letters of Ricardo to McCulloch (1816-1823),edited by J.Hollander, 1896 5. Letters of Ricardo to Trower and others (1811-1823),editedby Bonar and Hollander,1899 2b.Ricardo's Economic Essays, edited by E.C.K.Gonner,1923(根据McCulloch"Works") … 相似文献
6.
Dong-wen Xiang Feng-man Shen Jia-long Yang Xin Jiang Hai-yan Zheng Qiang-jian Gao Jia-xin Li 《矿物冶金与材料学报》2019,26(7):811-821
The combustion characteristics of two kinds of unburned pulverized coal (UPC) made from bituminous coal and anthracite were investigated by thermogravimetric analysis under air. The reaction kinetics mechanisms between UPC and CO2 in an isothermal experiment in the temperature range 1000-1100℃ were investigated. The combustion performance of unburned pulverized coal made from bituminous coal (BUPC) was better than that of unburned pulverized coal made from anthracite (AUPC). The combustion characteristic indexes (S) of BUPC and AUPC are 0.47×10-6 and 0.34×10-6%2·min-2·℃-3, respectively, and the combustion reaction apparent activation energies are 91.94 and 102.63 kJ·mol-1, respectively. The reaction mechanism of BUPC with CO2 is random nucleation and growth, and the apparent activation energy is 96.24 kJ·mol-1. By contrast, the reaction mechanism of AUPC with CO2 follows the shrinkage spherical function model and the apparent activation energy is 133.55 kJ·mol-1. 相似文献
7.
《上海师范大学学报(自然科学版)》1984,(4)
基理论实验报告卫芝一印nae五空J句(工)础nU曰Ot二冲‘甲‘匕心﹃公六O魂0内.‘ ,,.奋、确.二门几‘.二﹄1二j.二 ;:,J已J,通,J,J,汽d八0 nnn八的684 .1 .1正则图和多边偶图的色性讨论”···,……郑道朋许绍吉门且RUJ,J,户弓.勺 .龟.心‘,山弓‘J,J,J,六6及U且﹄一类线性非自治系统的一致稳定性与不稳定性 …’“‘”‘’‘’‘”..”‘’,‘·“’,·‘..’二”·……抗永珍84.1.均A汀,助波在不均匀稀薄背景等离子体内的畸变 石长和84 1 .2了一类50(14)大统一模型……陆继宗顾鸣皋84.1.34关于卫场n舰h空间中算子广义逆的某些逼近… 相似文献
8.
密度泛函理论方法研究稀土-过渡金属化合物的磁性和自旋密度图 总被引:2,自引:0,他引:2
Magnetic coupling constants J for the complete structures of rare earth\|transition metal compounds:LGdCu(NO\-3)\-3·Me\-2CO(1,Gd(Ⅲ)Cu(Ⅱ)) and [Ce(C\-4H\-7ON)\-4(H\-2O)\-3][Cr(CN)\-6]·2H\-2O(2, Ce(Ⅲ)Cr(Ⅲ)) have been calculated by the combination of the broken\|symmetry approach with the spin project method under the DFT framework.The J value for 1 is a small number in absolute value -2 4cm -1 for calculation,3 5cm -1 for experimental measurement.The spin density distributions are in detail discussed on the basis of Mulliken population analysis,taking into account the coexistence of spin delocalization and spin polarization mechanisms.For 1,the spin distribution in the ground state may be understood as a result of the competition between two mechanisms:a spin delocalization from Cu(Ⅱ) and a spin polarization of Gd(Ⅲ),and the former is dominant.In the case of 2,both transition metal Cr(Ⅲ) and rare earth Ce(Ⅲ) display a spin polarization effect on the surrounding atoms,where a counteraction of the opposite polarization effects leads a low spin density on the bridging ligand C1N1.In the ground state of 2,the stronger polarization effect of Cr(Ⅲ) even causes the positive spin density on the adjacent bridging atom N1. 相似文献
9.
《西南师范大学学报(自然科学版)》1986,(4)
第一期植物生态学专辑(英文版)’Fhe Chinese Vegetation and Its Regularities of Distribution......·....................。..................···..··.Zhong Zhangcheng et al:p固植被及其分布规律…………………………………………………钟章成缪世剁Fhe Preliminary Study On the Ecophysiology of Gordonia Acumenata Chang in Relation to Net Photosvnthesis……………Miao shili:翌川大头茶净光合作用生理生态的初步研究………………………………………缪世利气Preli minary Study on the Age Structure,and Dis… 相似文献
10.
《咸宁学院学报》1991,(4)
(括号内数字,茼者为期数后者为页码) 哲学政治思想教育 .’ ·.浅淡坚持思想领先与兼顾物质利益的关系……………………··………………胡家旷(!。8 5J在学科教学中渗透思想教育的尝试……………………………………………‘江诗宗f2‘H8)实事求是、fJ以为是、以本为是之分野……………………………………·贺祥林(3。1 L7)l 956年前后毛泽东对社会主义道路的思考………………………剐暇f:i’ ’j‘“:竹(3。1 7:-,f’’0校班集体建设的理论思考与实践…………………………··,…·………姜 儿(3‘1 j 1)服务·社会化·国情………………… 相似文献
11.
《燕山大学学报》1985,(4)
题目二L作8 14 24 31 In下上,几1几11 19曰9曰,土门︺6,士.叮J,人八︺了自月﹄n划,J 00夕钊,d,口月斗J4‘︺盛g‘,.峙‘J矛八6‘卜16扮2 2 2 2 2 2 3 3 3 33 3 4 4 44 机赫类滚铬15钢的温形变快速球化·····················……李少华陈世镇郑惕曾行星斜轧机轧辊均整段的辊形设计及试验···……赵文朱之超王刚综合变速转子平衡连杆机构惯性扭矩································”·…黄真单圆弧齿轮传动中弹性流体动力润滑油膜厚度的计算············……阎志鹏行… 相似文献
12.
Characterization and chemical surface texturization of bulk ZnTe crystals grown by temperature gradient solution growth 下载免费PDF全文
Using tellurium as a solvent, we grew ZnTe ingots of 30 mm in diameter and 70 mm in length by a temperature gradient solution growth method. Hall tests conducted at 300 K indicated that the as-grown ZnTe exhibits p-type conductivity, with a carrier concentration of approximately 1014 cm-3, a mobility of approximately 300 cm2·V-1·s-1, and a resistivity of approximately 102 Ω·cm. A simple and effective method was proposed for chemical surface texturization of ZnTe using an HF:H2O2:H2O etchant. Textures with the sizes of approximately 1 μm were produced on {100}, {110}, and {111}Zn surfaces after etching. The etchant is also very promising in crystal characterization because of its strong anisotropic character and Te-phase selectivity. 相似文献
13.
《南京大学学报(自然科学版)》1988,(4)
数学系作者张鸣琴刊物及期数或出版单位论文题目高教研究与探索87。No.1!l…一。踌一曰 一一张克民J .of GraPh Theory87。张克民Vol。11。No。3Linear Algobraa扛d itsAPPlieations 87.v二96在生物系科加强数学教学的迫切性Longes七Pathsa立d Cyelos in BIPartit。oriontod GraPhsOn Lowin and Vitek/5 Conjoetoro aboutT lie ExPonont 50七of Primitive matriees …蹂丫nst.黑穿r一飞雨一下h·J·。f·。一On tho Speetral Raditts of ma七:ieesO红Fixed Point Thoo:。ms for mtilti一Va-lued mapPingso且motrie Spaeos王… 相似文献
14.
《西安交通大学学报》1985,(6)
、J、Jq自2了、r、 题目作者一类非线性映象不动点与变分不等式解的谊历收效性 .............................····.··············……游兆永徐宗本弹性壳休的一种变分形式及其有限元通近············……黄艾香在具有可列签的Banaeh空间的基上取确定值 的有界线性泛函存在的充要亲件···········……,,·…龚怀云概率度t空间中概率直径的特征············……张文修张继国期次、、2、,产(2(23)(29)(33)(41)(55)(63)(73)、少、l/、、2、.J、.少,自O自,︺22J‘、尹‘、了‘、子百‘… 相似文献
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16.
《首都师范大学学报(自然科学版)》1991,(4)
JOURNAL OF BEIJING TEACHERSCOLLECE(Natural Seienees Edition)玩dex of Sum;nary Contets(1 991)Mathem吐让sVol .12 No.1~4The reterm加ation of a Kind of Solvable Lie Algebra.“”·”·“·“·“·“二”·,,…Cui Yimin(1):1The stable Point of Lynamical Sy滋em(X,N,f)“·”·“·“.“二””.”.“·…Yang Hongwei(1):9Regularity on Some Fouro川er Non钾mm毗eDiff份entlal OPerator……Lin Feng et al(1):16Greatest Common Divisor Matrix and Euler Matrlx”.“,“。”.”二““‘“.”,”… 相似文献
17.
Xiao-xiong Luo Hai-tao Zhang Xing Han Shi-jie Guo Dan-dan Chen Jian-zhong Cui Hiromi Nagaumi 《矿物冶金与材料学报》2016,23(6):637-644
Developments in the contents of different typical inclusions in 3104 alloy melt were described during heating and holding processing. The settling process of inclusion particles was investigated by measuring the contents of inclusions in the surface, center, and bottom layers of the molten metal. In the results, main inclusions observed and determined by Prefil and PoDFA methods are MgO, Al2O3, spinel (MgAl2O4), and TiB2 particles or thin films. It is found that some small particles of Al2O3 and MgO are transformed into spinel particles, and the formation rate increases as the temperature and the holding period of melt increase. The content of inclusions increases from 3.37 mm2·kg-1 to 7.54 mm2·kg-1 and then decreases to 3.08 mm2·kg-1 after holding for 90 min. This is attributed to a settling phenomenon and a significant increase in settling velocity after holding for 60 min. The content of inclusion particles decreases by means of settlement and flotation in liquid aluminum with an increase in holding time. The theoretical analysis and experiment results are in essential agreement with those from industrial production. 相似文献
18.
《科学通报(英文版)》1998,43(19):1621-1621
The vibrational energy transfer from highly vibrationally excited CO to H 2O molecules is studied by time-resolved Fourier transform infrared emission spectroscopy (TR FTIR). Following the 193 nm laser photolysis of CHBr 3 and O 2 the secondary reactions generate CO(v). The infrared emission of CO(v→v-1) is detected by TR FTIR. The excitation of H 2O molecules is not observed. By the method of the spectral simulation and the differential technique, 8 rate constants for CO(v)/H 2O system are obtained: (1.7±0.1), (3.4±0.2), (6.2±0.4), (8.0±1.0), (9.0±2.0), (12±3), (16±4) and (18±7) (10 -13cm 3·molecule -1·s -1). At least two reasons lead to the efficient energy transfer. One is the contributions of the rotational energy to the vibational energy defect and the other is the result of the complex collision. With the SSH and ab initio calculations, the quenching mechanism of CO(v) by H 2O is suggested. 相似文献
19.
《北京大学学报(自然科学版)》1957,(4)
Mathernatics and MechanicsN0L证0 Sa”峨。0............……Periodic Tran吐ormations an迁Fixed Point Tbeorems 1 CuP Produets and SPeeial Cobo现ology·············一1W劝份仍九g一械···········……On 11-Manifolds in Eul‘lidean Zn一Space·,·········,······……1C九乞a讹口pe一e加···········,一On Homology and Fixed point Properties of Compac七 Plane Sets·········································...···… 相似文献
20.
《贵州工业大学学报(自然科学版)》1985,(4)
(作者姓名后的数字为期数页码)·地质系云南鹅头厂层控富铁矿的成因探讨国外工程地质制图述评·········……滇中上厂铁矿矿床成因及找矿远景地质系税哲夫史别林李景阳顾悦(1):5了(1),7冬(2):16(2):47(3):93(2):1 13(4):123 nO几O通住刁上9曰刁上n甘。UO甘刀任nt)尸勺弓.︸ ..…龟……、各户了、,了廿、.古了、刀/、龟声了、.护刁.︷J‘孟,白八OJ任.月性Z矛、、Zr、2.、产矛‘、z饭了‘、滇中九道湾花岗岩含锡性的讨论及原生锡矿找矿远景的研究一 ······················……,’’··…张竹如陈世祯顾悦… 相似文献