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Method for Processing Graph Degeneracy in Dynamic Geometry Based on Domain Design

Journal of Computer Science & Technology 2021年第4期36卷 910-921页

作者： Hao Guan Yong-sheng Rao Jing-Zhong Zhang sheng Cao Xiao-lin Qin Institute of Computing Science and Technology Guangzhou UniversityGuangzhou 510006China Chengdu Institute of Computer Applications Chinese Academy of SciencesChengdu 610041China University of Chinese Academy of Sciences Beijing 100049China School of Computer Science and Engineering University of Electronic Science and Technology of China Chengdu 61173China

A dynamic geometry system,as an important application in the field of geometric constraint solving,is widely used in elementary mathematics education;moreover,the dynamic geometry system is also a fundamental environment for automated theorem proving in *** a geometric constraint solving process,a situation involving a critical point is often encountered,and geometric element degeneracy may occur at this ***,the degeneracy situation must be substantively focused on during the learning and exploration ***,many degeneracy situations cannot be completely presented even by the well-known dynamic geometry *** this paper,the mechanisms causing the degeneracy of a geometric element are analyzed,and relevant definitions and formalized descriptions for the problem are provided according to the relevant modern Euclidean geometry *** solve the problem,the data structure is optimized,and a domain model design for the geometric element and the constraint relationships thereof in the dynamic geometry system are formed;furthermore,an update algorithm for the element is proposed based on the novel domain *** addition,instances show that the proposed domain model and the update algorithm can effectively cope with the geometric element degeneracy situations in the geometric constraint solving process,thereby achieving unification of the dynamic geometry drawing and the geometric intuition of the user.

关键词： dynamic geometry critical point degeneracy domain model

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Deletion analysis of SMN1 and NAIP genes in southern Chinese children with spinal muscular atrophy

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2009年第1期10卷 29-34页

作者： Yu-hua LIANG Xiao-ling CHEN Zhong-sheng YU Chun-yue CHEN sheng BI Lian-gen MAO Bo-lin zhou Xian-ning ZHANG Department of Bioscience Bengbu Medical College Bengbu 233000 China Department of Biochemistry and Genetics School of Medicine Zhejiang University Hangzhou 310058 China National Education Base for Basic Medical Sciences Zhejiang University Hangzhou 310058 China Children's Hospital School of Medicine Zhejiang University Hangzhou 310003 China

Spinal muscular atrophy （SMA） is a disorder characterized by degeneration of lower motor neurons and occasionally bulbar motor neurons leading to progressive limb and trunk paralysis as well as muscular atrophy. Three types of SMA are recognized depending on the age of onset, the maximum muscular activity achieved, and survivorship： SMA1, SMA2, and SMA3. The survival of motor neuron （SMN） gene has been identified as an SMA determining gene, whereas the neuronal apoptosis inhibitory protein （NAlP） gene is considered to be a modifying factor of the severity of SMA. The main objective of this study was to analyze the deletion of SMN1 and NAIP genes in southern Chinese children with SMA. Here, polymerase chain reaction （PCR） combined with restriction fragment length polymorphism （RFLP） was performed to detect the deletion of both exon 7 and exon 8 of SMN1 and exon 5 of NAIP in 62 southern Chinese children with strongly suspected clinical symptoms of SMA. All the 32 SMA1 patients and 76% （13/17） of SMA2 patients showed homozygous deletions for exon 7 and exon 8, and all the 13 SMA3 patients showed single deletion of SMNI exon 7 along with 24% （4/17） of SMA2 patients. Eleven out of 32 （34%） SMA1 patients showed NAIP deletion, and none of SMA2 and SMA3 patients was found to have NA1P deletion. The findings of homozygous deletions ofexon 7 and/or exon 8 ofSMN1 gene confirmed the diagnosis of SMA, and suggested that the deletion ofSMN1 exon 7 is a major cause of SMA in southern Chinese children, and that the NAIP gene may be a modifying factor for disease severity of SMAI. The molecular diagnosis system based on PCR-RFLP analysis can conveniently be applied in the clinical testing, genetic counseling, prenatal diagnosis and preimplantation genetic diagnosis of SMA.

关键词： Spinal muscular atrophy (SMA) Survival motor neuron (SMN) gene Neuronal apoptosis inhibitory protein (NAIP) gene Mutation

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In Situ Dissimilatory Nitrate Reduction to Ammonium in a Paddy Soil Fertilized with Liquid Cattle Waste

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Pedosphere 2012年第3期22卷 314-321页

作者： LU Wei-Wei S.RIYA zhou sheng M.HOSOMI ZHANG Hai-lin SHI Wei-Ming State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil ScienceChinese Academy of SciencesNanjing 210008(China) Graduate University of Chinese Academy of Sciences Beijing 100049(China) Graduate School of Engineering Tokyo University of Agriculture and TechnologyTokyo 184-8588(Japan) Institute of Engineering Tokyo University of Agriculture and TechnologyTokyo 184-8588(Japan) Department of Plant and Soil Sciences Oklahoma State UniversityStillwaterOK 74078(USA)

Most studies on dissimilatory nitrate reduction to ammonium （DNRA） in paddy soils were conducted in the laboratory and in situ studies are in need for better understanding of the DNRA process. In this study, in situ incubations of soil DNRA using ^15N tracer were carried out in paddy fields under conventional water （CW） and low water （LW） managements to explore the potential of soil DNRA after liquid cattle waste （LCW） application and to investigate the impacts of soil redox potential （Eh） and labile carbon on DNRA. DNRA rates ranged from 3.06 to 10.40 mg N kg 1 dry soil d-1, which accounted for 8.55%-12.36% and 3.88% 25.44% of consumption of added NO3-^15N when Eh at 5 cm soil depth ranged from 230 to 414 mV and -225 to -65 mV, respectively. DNRA rates showed no significant difference in paddy soils under two water managements although soil Eh and/or dissolved organic carbon （DOC） were more favorable for DNRA in the paddy soil under CW management 1 d before, or 5 and 7 d after LCW application. Soil DNRA rates were negatively correlated with soil Eh （P 〈 0.05, n = 5） but positively correlated with soil DOC （P 〈 0.05, n - 5） in the paddy soil under LW management, while no significant correlations were shown in the paddy soil under CW management. The potential of DNRA measured in situ was consistent with previous laboratory studies; and the controlling factors of DNRA in paddy soils might be different under different water managements, probably due to the presence of different microfioras of DNRA.

关键词： labile soil carbon livestock waste ^15N labeling soil redox potential

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Comparative Study on Debris Flow Initiation in Limestone and Sandstone Spoil

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Journal of Mountain Science 2013年第2期10卷 190-198页

作者： CHEN Ning-sheng LU Yang DENG Ming-feng HAN Da-wei zhou Hai-bo YANG Cheng-lin Key lab of mountain hazards and surface process Institute of mountain hazards and environmentChinese Academy of Sciences University of Chinese Academy of Sciences University of Bristol UK

Large spoil tips from reconstruction works as a result of the Wenchuan Earthquake in China are new debris flow hazards to the human ***,there is a lack of detailed comparative study on debris flow initiation in different spoil *** paper describes a series of tests and analyses on debris flow characteristics(initiation,scale and mechanism) at six sites with limestone and sandstone materials near the Dujiangyan *** shows the limestone spoil contains debris flow prone clay content with high concentration of montmorillonite(highly expandable).In addition,limestone spoil is of such a low permeability that water mainly concentrates in the upper surface *** factors make it easy for the increase of pore water pressure,decline of internal friction and conhesion force,leading to the occurence of large debris *** contrast,the sandstone spoil is less problematic and causes no major debris flow *** on our research on the mechanism,the"stereometric drainage"method is sucessfully applied to control limestone spoil debris flows.

关键词： Debris flows Comparative study Reconstruction spoil Initiation mechanism Mitigation measures

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Two new isoflavonoids from the rhizomes of Belamcanda chinensis

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Chinese Chemical Letters 2007年第6期18卷 694-696页

作者： Zhi Jun Song Fan Luo Yan zhou Bin Ru Bai Shu lin Peng Li sheng Ding Chengdu Institute of Biology Chinese Academy of Sciences Chengdu 610041 China College of Life Science and Technology Southwest University for Nationalities Chengdu 610041 China

Two new isoflavonoids, 6-methoxy-5,7,8,4′-tetrahydryoxyisoflavone (1) and 4′-methoxy -5,6-dihydroxyisoflavone-7-O-β-d-glucopyranoside (2), were isolated from the rhizomes of Belamcanda chinensis (L.) DC. Their stru... 详细信息

关键词： Belamcanda chinensis Isoflavanoid 6-Methoxy-5,7,8,4′-tetrahydryoxyisoflavone 4′-Methoxy-5,6-dihydroxyisoflavone-7-O-β-d-glucopyranoside

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Multi-type sensor placement and response reconstruction for building structures: Experimental investigations

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Earthquake Engineering and Engineering Vibration 2018年第1期17卷 29-46页

作者： Rong-Pan Hu You-lin Xu sheng Zhan Department of Civil and Environmental Engineering The Hong Kong Polytechnic University

Estimation of lateral displacement and acceleration responses is essential to assess safety and serviceability of high-rise buildings under dynamic loadings including earthquake excitations. However, the measurement information from the limited number of sensors installed in a building structure is often insufficient for the complete structural performance assessment. An integrated multi-type sensor placement and response reconstruction method has thus been proposed by the authors to tackle this problem. To validate the feasibility and effectiveness of the proposed method, an experimental investigation using a cantilever beam with multi-type sensors is performed and reported in this paper. The experimental setup is first introduced. The finite element modelling and model updating of the cantilever beam are then performed. The optimal sensor placement for the best response reconstruction is determined by the proposed method based on the updated FE model of the beam. After the sensors are installed on the physical cantilever beam, a number of experiments are carried out. The responses at key locations are reconstructed and compared with the measured ones. The reconstructed responses achieve a good match with the measured ones, manifesting the feasibility and effectiveness of the proposed method. Besides, the proposed method is also examined for the cases of different excitations and unknown excitation, and the results prove the proposed method to be robust and effective. The superiority of the optimized sensor placement scheme is finally demonstrated through comparison with two other different sensor placement schemes： the accelerometer-only scheme and non-optimal sensor placement scheme. The proposed method can be applied to high-rise buildings for seismic performance assessment.

关键词： experimental investigation multi-type sensors inclinometer response reconstruction optimal sensor placement

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A general pressure drop model based on liquid holdup of gas-liquid flow in micro-packed beds

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CHINESE JOURNAL OF CHEMICAL ENGINEERING 2024年第12期76卷 147-156页

作者： Wang, Junjie sheng, lin Deng, Jiang Luo, Guangsheng Tsinghua Univ Dept Chem Engn State Key Lab Chem Engn Beijing 100084 Peoples R China

The understanding of the gas-liquid flow characteristics in a micro-packed bed reactor is still immature, especially for many gas-organic working systems commonly used in industry. Accordingly, this study proposes a platform to investigate the gas-liquid flow characteristics in a micro-packed bed reactor and presents a unified expression for these characteristics of both organic and aqueous liquid phase. The influence of two-phase flow rate, working solution viscosity, and packing particle size on the liquid holdup and pressure drop were studied. The gas-organic working systems results show that the liquid holdup ranges between 0.5 and 0.8 and pressure drop ranges from 50 to 350 kPa center dot m-1. In particular, a strong correlation between the two flow characteristics parameters (liquid holdup and pressure drop) was proposed for the first time. Finally, a general pressure drop mathematical prediction model in micropacked bed were developed. (c) 2024 The Chemical Industry and Engineering Society of China, and Chemical Industry Press Co., Ltd. All rights are reserved, including those for text and data mining, AI training, and similar technologies.

关键词： Gas-liquid flow Micro-packed bed reactors Liquid holdup Pressure drop Mathematical model

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Next-generation sequencing technology for diagnosis and efficacy evaluation of a patient with visceral leishmaniasis: A case report

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World Journal of Clinical Cases 2021年第32期9卷 9903-9910页

作者： zhou-Ning lin Yong-Cheng Sun Jia-Ping Wang Yan-Li Lai Li-Xia sheng Internal Medicine School of Medicine Ningbo UniversityNingbo 315000Zhejiang ProvinceChina Department of Hematology Ningbo First HospitalNingbo 315000Zhejiang ProvinceChina

BACKGROUND Visceral leishmaniasis(VL)is a parasitic disease caused by Leishmania and transmitted by infected sand *** has a low incidence in China,and its clinical presentation is complex and *** disease is easily misdiagnosed and can become life-threatening within a short period of ***,early,rapid and accurate diagnosis and treatment of the disease are *** SUMMARY A 25-year-old male patient presented with the clinical manifestations of irregular fever,hepatosplenomegaly,increased polyclonal globulin,and *** first bone marrow puncture biopsy did not provide a clear *** order to relieve the pressure and discomfort of the organs caused by the enlarged spleen and to confirm the diagnosis,splenectomy was performed,and hemophagocytic syndrome was diagnosed by pathological examination of the spleen *** bone marrow and spleen pathological re-diagnosis and metagenomic next-generation sequencing(mNGS)technology detection,the patient was finally diagnosed with *** treatment with liposomal amphotericin B,the body temperature quickly returned to normal and the hemocytes recovered ***-treatment re-examination of the bone marrow puncture and mNGS data showed that Leishmania was not *** As a fast and accurate detection method,mNGS can diagnose and evaluate the efficacy of treatment in suspicious cases of leishmaniasis.

关键词： Visceral leishmaniasis Kala-azar Next-generation sequencing Hemophagocytic lymphohistiocytosis Diagnosis Case report

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Connes distance of 2D harmonic oscillators in quantum phase space

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Chinese Physics B 2021年第11期30卷 170-179页

作者： Bing-sheng lin Tai-Hua Heng School of Mathematics South China University of TechnologyGuangzhou 510641China Laboratory of Quantum Science and Engineering South China University of TechnologyGuangzhou 510641China School of Physics and Material Science Anhui UniversityHefei 230601China

We study the Connes distance of quantum states of two-dimensional(2D)harmonic oscillators in phase *** the Hilbert–Schmidt operatorial formulation,we construct a boson Fock space and a quantum Hilbert space,and obtain the Dirac operator and a spectral triple corresponding to a four-dimensional(4D)quantum phase *** on the ball condition,we obtain some constraint relations about the optimal *** construct the corresponding optimal elements and then derive the Connes distance between two arbitrary Fock states of 2D quantum harmonic *** prove that these two-dimensional distances satisfy the Pythagoras *** results are significant for the study of geometric structures of noncommutative spaces,and it can also help us to study the physical properties of quantum systems in some kinds of noncommutative spaces.

关键词： Connes distance noncommutative geometry harmonic oscillator

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NewBalance: Efficient Data Space Management and Algorithmic Optimization for Large-Scale Storage Systems

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Chinese Journal of Electronics 2017年第3期26卷 493-501页

作者： XU Guangping lin sheng SHI Kai ZHANG Hua Tianjin Key Laboratory of Intelligence Computing and New Software Technology Computer and Communication Engineering School Tianjin University of Technology

Fragmentation usually occurs when data space of original storage nodes has to be reallocated to new added storage nodes during the scale-out evolution of the large-scale storage *** greatly influences its performance and becomes a challenge to manage the whole *** present an efficient space management framework,called New Balance,to reduce fragmentation with the minimum data movement while keeping the storage system load *** space management framework has two phases including the collection phase and the allocation *** the collection phase,we propose a novel algorithm,called the greedy bi-direction collector,which collects enough space for the new storage *** the allocation phase,we formally represent it as a variant of the bin packing problem and then utilize some bin packing heuristics including the first fitting and the best fitting to allocate collected intervals to new added storage *** experimental results show that the amount of intervals can be reduced by 20%;5%and our algorithmic optimization improves the data lookup performance by at least 10%and the scale-out performance by 2X;X.

关键词： Large-scale storage systems Space management Algorithmic optimization Performance evaluation

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