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Late-model Ionic Clusters of KNO_3 and Their Configurations

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Chemical Research in Chinese Universities 2005年第5期21卷 587-591页

作者： SHI Lei YANG zhi LIU zhi-qiang LIU Shu-ying School of Public Health Jilin University Changchun 130021 P. R. China Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 P. R. China

Late-model ionic clusters of KNO3 were formed under the conditions of electrospray ionization. A series of peaks of the ionic clusters could be observed in the electrospray ionization mass spectra（ESIMS）. The general formulae of the ionic clusters were deduced to be K^ ＋（ KNO3 ） m and NO3^-（ KNO3 ）m. By referring to the crystal structure of KNOs , the possible configurations of these new typical ionic clusters were speculated based on the calculated data by means of the Gaussian-94^x computer program.

关键词： Cluster KNO3 Configuration Gaussian-94^* computer program

Optimal Design of Co/In/Cu Sputtering Target Assembly Using Finite Element Method and Taguchi Method

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Acta Metallurgica Sinica(English Letters) 2019年第11期32卷 1407-1414页

作者： Lin Jiang liang Zhang zhi-Quan Liu Institute of Metal Research Chinese Academy of SciencesShenyang 110016China School of Materials Science and Engineering University of Science and Technology of ChinaShenyang 11016China School of Mechatronic Engineering Jiangsu Normal UniversityXuzhou 221116China

Target assembly is a key consumable material for producing thin fi lm used in the electronic packaging and devices. The residual stresses induced during the process of soldering are detrimental to the performance of target assembly. In this work, the intensity and distribution of the soldering residual stress of Co/In/Cu target assembly subjected to a 20 W/(m^2 K) cooling condition corresponding to the actual air cooling process were studied, based on fi nite element simulation and Taguchi method, to optimize the sputtering target assembly. Effects of different control factors, including solder material, thickness of solder layer, target and backing plate, on the soldering residual stress of target assembly are investigated. The maximum residual stress is calculated as 9.28 MPa in the target located at 0.16 mm from target–solder layer interface and at a distance of 0.78 mm from symmetry axis. The optimal design in target assembly has the combination of indium solder material, cobalt target at 12 mm thick, solder layer at 0.8 mm thick, copper backing plate at 15 mm thick. Moreover, solder material is the most important factor among control factors in the target assembly.

关键词： Co target assembly Solder Residual stress Simulation Taguchi method Optimal design

A multithreaded parallel upwind sweep algorithm for the S_(N) transport equations discretized with discontinuous finite elements

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Nuclear Science and Techniques 2023年第12期34卷 229-241页

作者： zhi‑Wei Zong Mao‑Song Cheng ying‑Chi Yu zhi‑Min Dai Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China University of Chinese Academy of Sciences Beijing 100049China

The complex structure and strong heterogeneity of advanced nuclear reactor systems pose challenges for high-fidelity neutron-shielding calculations. Unstructured meshes exhibit strong geometric adaptability and can overcome the deficiencies of conventionally structured meshes in complex geometry modeling. A multithreaded parallel upwind sweep algorithm for S_(N) transport was proposed to achieve a more accurate geometric description and improve the computational efficiency. The spatial variables were discretized using the standard discontinuous Galerkin finite-element method. The angular flux transmission between neighboring meshes was handled using an upwind scheme. In addition, a combination of a mesh transport sweep and angular iterations was realized using a multithreaded parallel technique. The algorithm was implemented in the 2D/3D S_(N) transport code ThorSNIPE, and numerical evaluations were conducted using three typical benchmark problems:IAEA, Kobayashi-3i, and VENUS-3. These numerical results indicate that the multithreaded parallel upwind sweep algorithm can achieve high computational efficiency. ThorSNIPE, with a multithreaded parallel upwind sweep algorithm, has good reliability, stability, and high efficiency, making it suitable for complex shielding calculations.

关键词： Shielding calculation Discrete ordinates method Discontinuous Galerkin finite element method Unstructured meshes

A Method of Gene-Function Annotation Based on Variable Precision Rough Sets

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Journal of Bionic Engineering 2007年第3期4卷 177-184页

作者： zhi-li Pei Xiao-hu Shi Meng Niu Xu-ning Tang Li-sha Liu ying Kong Yan-chun liang College of Computer Science and Technology Jilin University Key Laboratory of Symbol Computation and Knowledge Engineering of the Ministry of Education Changchun 130012 P. R. China College of Mathematics and Computer Science Inner Mongolia University for NationalitiesTongliao 028043 P. R. China College of Software Jilin University Changchun 130012 P. R. China Department of Biochemistry and Molecular Biology Institution of Glycobiology Dalian Medical University Dalian 116027 P. R. China

It is very important in the field of bioinformatics to apply computer to perform the function annotation for new sequenced bio-sequences. Based on GO database and BLAST program, a novel method for the function annotation of new biological sequences is presented by using the variable-precision rough set theory. The proposed method is applied to the real data in GO database to examine its effectiveness. Numerical results show that the proposed method has better precision, recall-rate and harmonic mean value compared with existing methods.

关键词： gene function annotation variable precision rough set GO BLAST

Adaptive modulation MIMO system based on minimizing transmission power

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2006年第6期7卷 1046-1050页

作者： WANG zhi-ying HE Chen Department of Electronics Engineering Shanghai Jiao Tong University Shanghai 200240 China

Adaptive modulation (AM) is an effective technique to approach the theoretical bound of multi-input and multi-output (MIMO) channel. In most previous studies, the AM parameters were obtained by maximizing the transmission rate for a given total transmit power. In this paper, a novel AM-MIMO algorithm is presented, which is based on minimizing total transmit power when the link’s QoS requirements are given. By taking the QoS requirements into account directly, the proposed algorithm not only makes the system more flexible, but also makes the cross layer design of wireless network easier. At last, the numerical results of the proposed scheme are presented.

关键词： MIMO system Adaptive modulation (AM) QoS

Recent Advances in Cloning and Characterization of Disease Resistance Genes in Rice

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Journal of Integrative Plant Biology 2007年第1期49卷 112-119页

作者： liang-ying Dai Xiong-Lun Liu ying-Hui Xiao Guo-liang Wang Rice Genomics Laboratory Hunan Agricultural University Changsha 410128 China Department of Plant Pathology The Ohio State University Columbus OH 43210 USA

Rice diseases caused by fungi, bacteria and viruses are one of the major constraints for sustainable rice （Oryza sativa L.） production worldwide. The use of resistant cultivars is considered the most economical and effective method to control rice diseases. In the last decade, a dozen resistance genes against the fungal pathogen Magnaporthe grisea and the bacterial pathogen Xanthomonas oryzae pv. oryzae have been cloned. Approximately half of them encode nuclear binding site （NBS） and leucine rich repeat （LRR）-containing proteins, the most common type of cloned plant resistance genes. Interestingly, four of them encode novel proteins which have not been identified in other plant species, suggesting that unique mechanisms might be involved in rice defense responses. This review summarizes the recent advances in cloning and characterization of disease resistance genes in rice and presents future perspectives for in-depth molecular analysis of the function and evolution of rice resistance genes and their interaction with avirulence genes in pathogens.

关键词： rice blast bacterial blight Oryza sativa Magnaporthe grisea Xanthomonas oryzae pv. oryzae

Generalized dominance-based rough set approach to security evaluation with imprecise information

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High Technology Letters 2010年第3期16卷 254-262页

作者： Zhao liang Xue zhi School of Electronic and Electric Engineering Shanghai Jiaotong University Shanghai 200240 P.R. China

The model of grey multi-attribute group decision-making （MAGDM） is studied, in which the attribute values are grey numbers. Based on the generalized dominance-based rough set approach （G-DR- SA）, a synthetic security evaluation method is presented. With-the grey MAGDM security evaluation model as its foundation, the extension of technique for order performance by similarity to ideal solution （TOPSIS） integrates the evaluation of each decision-maker （DM） into a group＇s consensus and obtains the expected evaluation results of information system. Via the quality of sorting （QoS） of G-DRSA, the inherent information hidden in data is uncovered, and the security attribute weight and DMs＇ weight are rationally obtained. Taking the computer networks in a certain university as objects, the example illustrates that this method can effectively remove the bottleneck of the grey MAGDM model and has practical significance in the synthetic security evaluation.

关键词： security evaluation grey number multi-attribute group decision-making (MAGDM) generalized dominance-based rough set approach (G-DRSA)

Photoelectrochemical properties of BiVO4 thin films with NaOH chemical treatment

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Rare Metals 2019年第5期38卷 446-452页

作者： Dong-Dong Lv Jiao-Feng Liu Zheng Zhang ying-You Ma Yan liang zhi-Tai Zhou Wei-Chang Hao School of Physics Beihang University

BiVO4 thin films were prepared by a mature and simple electrochemical deposition method on F-doped SnO2 substrate electrode(FTO).The influence of a chemical treatment using sodium hydroxide(NaOH)on the photoelectrochemical properties of BiVO4 thin films was *** was found that NaOH can etch the crystal surface of BiVO4,which leads to the increase in specific surface area and improved photoelectrochemical *** photocurrent density of the BiVO4 thin films showed an enhancement of photoelectronic current from 0.50 to0.65 mAácm-2 at 1.23 V(***)after the treatment for5 h by NaOH,which supplies a stronger potential for H2 O oxidation.

关键词： BiVO4 Photoelectrochemical Surface treatment NaOH

Analysis of the Lignin Contents and Related Enzymes Activities in Seed Coat Between Black-Seeded and Yellow-Seeded Rapes (Brassica napus L.)

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Agricultural Sciences in China 2005年第12期4卷 890-897页

作者： RAN Xiu-zhi liang ying LI Jia-na College of Agronomy and Life Science Southwest Agricultural University Chongqing 400716 P.R.China

One pair of near isonegic yellow/black seeded rape （Brassica napus L） were used as experimental materials to study the changes of lignin contents and enzymes activities of 4-coumarate： CoA ligase （4CL）, Cinnamyl alcohol dehydrogenase （CAD） and ferulate 5-hydroxylase （F5H） in seedcoats during the stage of seed development. The variation analysis showed that the changes of lignin contents and enzyme activities of 4CL, CAD and F5H in seed coat had significant differences between black- and yellow-seeded rapes, and also between different development stages. The correlation analysis demonstrated that the lignin contents were positively correlative to the activities of all three enzymes investigated in the study, and the interactions between them in the seed coat of the two lines. For yellow-seeded rape, the correlation coefficient （0.7262018） of lignin content and the interaction between 4CL and F5H was significant, the lignin contents were highly positively correlative to the activities of CAD and F5H, the interaction between 4CL and CAD, and the interaction between CAD and F5H. For the black-seeded rape, only the lignin content was highly positively correlative to the activity of F5H （the correlation coefficient was 0.772949）, the other correlation coefficients, i. e. lignin contents to 4CL, CAD activities, the interactions between the three enzymes were not significant although all the correlation coefficients were above 0.5000. The results suggested that 4CL, CAD and F5H regulated the biosynthesis of lignin in seedcoat of rapes, leading to the lignin contents in the seedcoats of the yellow-seeded rape much lower than that of the black-seeded line, and affecting the thickness of the developing seedcoats in rapes. Therefore, it was likely to change the seedcoat ratio by overexpressing or suppressing the activities of one of the enzymes, both of them or all of them.

关键词： Brassica napus L.0 Lignin contents0 4CL CAD F5H