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Studies on Thermal Conductivity of Diamond Film

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High Technology Letters 1995年第1期1卷 91-94页

作者： Jingbiao, C. Hong, ch. Jifa, zh. Dayan, B. Rongchuan, F. Univ of Science and Technology of China Hefei China

Diamond films were prepared by electron-assisted chemical vapor deposition (EACVD) system, and the thermal diffusivities of the films with or without substrate were studied by use of photothermal deflection (PTD) technique. The results show that less non-diamond component and larger crystalline size result in higher thermal conductivity of CVD diamond film. The influence of substrate on the measurement of thermal conductivity of the film was investigated, and a simple two-layer heat conduction model is given to account for the influence and used to draw the thermal conductivity of the film from the effective thermal diffusivity of film/substrate system.

关键词： Diamond film Photothermal deflection Thermal conductivity Substrate

Selective De-O-acetylation in TCP-containing Carbohydrate Structures with Magnesium Methoxide

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chinese chemical Letters 2000年第11期11卷 941-944页

作者： qin, zh.Li, H Cai, MS Li, ZJ Beijing Med Univ Sch Pharmaceut Sci Dept Bioorgan Chem Beijing 100083 Peoples R China

Magnesium methoxide can be used for TCP-containing substrates to remove acetyl group successfully while leaving the TCP-group virtually intact.

关键词： Och TCP De

chemical pattern recognition applied to materials optimal design and industry optimization

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chinese Science Bulletin 1997年第10期42卷 793-799页

作者： chen, NY Li, ch qin, P Shanghai Institute of Metallurgy Chinese Academy of Sciences Shanghai China

The multi-dimensional spaces, spanned by the dimensionless numbers describing the equilibrium states or the macroscopic chemical kinetics of complicated chemical reaction systems, have been used for the data processing of the process-es in materials preparation or industrial production. It has been found that there are four common topological types of the rela-tions between the optimization zone and the operation zone in the multi-dimensional spaces. Various computation methods us-ing pattern recognition, artificial neural network and genetic algorithm are used for model-building and optimization strategy search.ng. An integrated system named KDPAG has been built for materials optimal design or industrial optimization. Appli-cation to chemical, petrochemical and metallurgical industries and materials optimal design gives good results.

关键词： chemical pattern recognition materials design industrial optimization.

SEQUENTIAL CONVEX PROGRAMMIng METHODS FOR SOLVIng LARGE TOPOLOGY OPTIMIZATION PROBLEMS： IMPLEMENTATION AND COMPUTATIONAL RESULTS

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Journal of Computational Mathematics 2005年第5期23卷 491-502页

作者： qin Ni ch.Zillober K.Schittkowski Nanjing University of Aeronautics and Astronautics 210016 Nanjing China Department of Computer Science University of BayreuthD-95440 BayreuthGermany

In this paper, we describe a method to solve large-scale structural optimization problems by sequential convex programming （SCP）. A predictor-corrector interior point method is applied to solve the strictly convex subproblems. The SCP algorithm and the topology optimization approach are introduced. Especially, different strategies to solve certain linear systems of equations are analyzed. Numerical results are presented to show the efficiency of the proposed method for solving topology optimization problems and to compare different variants.

关键词： Large scale optimization Topology optimization Sequential convex programming method Predictor-corrector interior point method Method of moving asymptotes

Some Regularities of Continuous Solid Solutions of Alloy Systems

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Journal of Materials Science & Technology 1997年第5期13卷 431-434页

作者： Guo, JK Li, ch qin, P Liu, HL chen, NY chINESE ACAD SCI SHANGHAI INST METSHANGHAI 200050PEOPLES R CHINA

A modified Miedema model and pattern recognition technique are used to establish the criteria for the formation of continuous solid solutions in alloy systems, and to study the occurrence of the melting temperature mi... 详细信息

关键词： Binary alloys

FORMABILITY CRITERIA OF INTERMETALLIC COMPOUNDS CONTAINIng TRANSITION METAL SYSTEMS

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中国有色金属学会会刊：英文版 1997年第3期7卷 136-139页

作者： Guo, J Li, ch qin, P chen, NY Cao, Y Qiu, GF chINESE ACAD SCI SHANGHAI INST METSHANGHAI 200050PEOPLES R CHINA SUzh.U UNIV DEPT CHEMSUZHOU 215006PEOPLES R CHINA

ＦＯＲＭＡＢＩＬＩＴＹＣＲＩＴＥＲＩＡＯＦＩＮＴＥＲＭＥＴＡＬＬＩＣＣＯＭＰＯＵＮＤＳＣＯＮＴＡＩＮＩＮＧＴＲＡＮＳＩＴＩＯＮＭＥＴＡＬＳＹＳＴＥＭＳＧｕｏＪｉｎ，ＬｉＣｈｏｎｇｈｅ，ＱｉｎＰｅｉ，ＣｈｅｎＮｉａｎｙ... 详细信息

ＦＯＲＭＡＢＩＬＩＴＹＣＲＩＴＥＲＩＡＯＦＩＮＴＥＲＭＥＴＡＬＬＩＣＣＯＭＰＯＵＮＤＳＣＯＮＴＡＩＮＩＮＧＴＲＡＮＳＩＴＩＯＮＭＥＴＡＬＳＹＳＴＥＭＳＧｕｏＪｉｎ，ＬｉＣｈｏｎｇｈｅ，ＱｉｎＰｅｉ，ＣｈｅｎＮｉａｎｙｉＳｈａｎｇｈａｉＩｎｓｔｉｔｕｔ...

关键词： formability criterion intermetallic compound transition element

Absorption Spectroscopy of （8,1） Band in d^3△-a^3П System of CS Radical

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chinese Journal of chemical Physics 2012年第5期25卷 513-518,I0003页

作者： chuan-liang Li Lun-hua Deng Yan zh.ng Ji-lin Wei Ya ng-qin chen Department of Physics School of Applied ScienceTaiyuan University of Science and TechnoloEyTaiyuan 030024China State Key Laboratory of Precision Spectroscopy and Department of Physics East China NormalUniversityShanghai 200052China

The CS radical was generated by discharging the mixture gas of CS2 and Helium. The Doppler limited spectra of CS were recorded in the region of 12350-12950 cm^-1 using optical heterodyne concentration modulation absorption spectroscopy. Three hundred and twenty-six lines were recorded and assigned to the d^3△-a^3П （8,1） band, in which eighty-three transitions were first observed. A set of improved molecular constants for the d^3△（v=8） and a^3П（v=1） levels were determined by a non-linear least-squares fitting of all the lines to the effective Hamiltonian.

关键词： CS radical Concentration modulation absorption spectroscopy Molecularconstant

chylous ascites in colorectal surgery:A systematic review

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World Journal of Gastrointestinal Surgery 2021年第6期13卷 585-596页

作者： Zi qin ng Margaret Han Han Nien Beh Simon Keelan Department of General Surgery St John of God Midland HospitalMidland 6056Western AustraliaAustralia Department of General Surgery Joondalup Health CampusJoondalup 6027Western AustraliaAustralia

BACKGROUND chylous ascites is a rare complication in colorectal surgery with limited *** To systematically review all available evidence to describe the incidence,clinical presentation,risk factors and management *** The systematic review was performed through PubMed,MEDLINE,EMBASE and Cochrane and cross-checked up to November *** data collated included:Demographics,indications(benign vs malignant),site of disease,surgical approach,extent of lymphadenectomy,day to and method of diagnosis of chylous ascites and management *** A total of 28 studies were included in the final analysis(426 cases).Patient age ranged from 31 to 89 *** except one case were performed for *** the 426 cases,195 were right-colonic,121 left-colonic,103 pelvic surgeries and 7 *** majority were diagnosed during the same inpatient stay by recognition of typical drain appearance and increased *** cases were diagnosed during outpatient visits with increased abdominal distention and subsequently underwent *** cases were managed successfully non-operatively(fasting with prolonged drainage,total parenteral nutrition,somatostatin analogues or a combination of these).Only three cases required surgical intervention after failing conservative management and subsequently resolved *** factors identified include:Right-colonic surgery/tumour location,extent of lymphadenectomy and number of lymph nodes *** chylous ascites after colorectal surgery is a relatively rare *** the majority of cases resolved without surgical intervention,preventative measures should be undertaken such as meticulous dissection and clipping of lymphatics during lymphadenectomy to prevent morbidity.

关键词： chylous chyle Ascites Leak Colon Rectum Lymphadenectomy

Synthesis, Crystal Structure and Luminescence Properties of a Cadmium(Ⅱ) Complex Based on 2-Hydroxy-6-methylisonicotinic Acid

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chinese Journal of Structural chemistry 2016年第2期35卷 279-285页

作者： zh.ng Tian TIAN Ai-qin FEng Xun Seik Weng ng TIAN Pan-Hao WAng Yang College of chemistry and chemical Engineering Luoyang Normal University Basic Courses Education Department Henan Forestry Vocational College Department of chemistry University of Malaya chemistry Department Faculty of ScienceKing Abdulaziz University

A new cadmium（Ⅱ） complex[Cd（Hminic）（IP）]n（1,Hminic = 2-hydroxy-6-methylisonicotinic acid,IP = imidazo[4,5-f]-l,10-phenanthroline）,has been synthesized by the reaction of a Hminic and auxiliary N-containing ligands with Cd（Ⅱ） ion under hydrothermal *** complex was studied by elemental analysis,IR spectroscopy and X-ray *** is formulated as C（20）H（13）CdN5O3,crystallizes in monoclinic system,space group C2/c with α=9.6764（8）,b = 26.767（2）,c = 14.1332（11） A and β= 97.4510（10）°.V= 3629.7（5） A^3,Z = 8,Mr=483.75,Dc = 1.770 g/cm^3,F（000） = 1484 and μ= 1.237 mm^（-1）.The final refinement gave R = 0.0309 and wR = 0.0703 for 4151 reflections with I 〉2σ（I）.In the structure of 1,two Cd（Ⅱ） atoms are joined by a pair of μ2-hydroxyl oxygen atoms giving rise to a dinuclear Cd（Ⅱ） unit which is bridged by Hminic linkers to form a 1D ladder-like polymer *** chelating ligand IP coordinated to the Cd（Ⅱ） atom,and alternately attached to both sides of the ladder-like polymer *** chains are further bound together by strong intermolecular hydrogen bonds and face-to-face π…πinteractions,resulting in the formation of a 3D supramolecular ***,the thermal stability and luminescent properties of this complex and the free ligands have been investigated.

关键词： luminescent property 2-hydroxy-6-methylisonicotinic acid cadmium(Ⅱ) complex