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Effect of Nuclear Binding Energy to K Factor

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Communications in Theoretical Physics 2007年第4期47卷 690-694页

作者： hou zhao-yu GUO Ai-Qiang Department of Mathematics and Physics Shijiazhuang Railway Institute Shijiazhuang 050043 China Department of Physics Hebei Normal University Shijiazhuang 050016 China

We modify the square of virtual photon four-momentum by using nuclear binding energy formula, and calculate the effect of nuclear binding energy to K factor and Compton subprocess and annihilate subprocess in A-A collision Drell-Yan process. The outcome indicates that the effect of nuclear binding energy to K factor is obvious in little x region and it would disappear gradually as x increases.

关键词： Drell-Yan process nuclear binding energy K factor

Uncertainty Study of B_d(B_s)→γv Decays

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Communications in Theoretical Physics 2009年第7期52卷 99-102页

作者： hou zhao-yu HONG Bi-Hai Department of Mathematics and Physics Shijiazhuang Railway Institute Shijiazhuang 050043 China Department of Physics Lishui University Lishui 323000 China

B^0(B+s)→γvv decays are useful to determining the decay constants f_B(f_B_s) and B(B_s) meson *** the B meson wave function determined in hadronic B(Bs) decays,we study the uncertainties due tothe types of B meson wave *** find that the branching ratios are sensitive to the type of wave functions andinput parameters,but the energy spectrum is *** predicted branching ratios are (0.45-1.04) ×10^(-9) and(2.14-3.27) × 10^(-8) for B^0 and B_s decay,respectively.

关键词： B decay wave function branching ratio

A Study on Radiative Dileptonic Decays B^0（Bs）→γe^＋e^-

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Communications in Theoretical Physics 2007年第2期47卷 299-302页

作者： CHEN Jun-Xiao hou zhao-yu LUE Cai-Dian Institute of High Energy Physics the Chinese Academy of Sciences P.O. Box 918（4） Beijing 100049 China College of Physical Science and Information Engineering Hebei Normal University Shijiazhuang 050016 China Mathematics and Physics Department Shijiazhuang Railway Institute Shijiazhuang 050043 China

We study the rare radiative dileptonlc decays B^0（Bs）→γe^＋e^- （e = e, μ） in the standard model By using the B meson wave function constrained by non-leptonic decays, the branching ratios turn out to be of the order of 10^-9 for Bs→γe^＋e^-, γe^＋e^-, and 10^-10 for Bs→γe^＋e^-, γe^＋e^-. Based on the study, these decays are accessible at the near future LHC-b experiment, which are useful to determine the B（B,） wave function.

关键词： radiative decay B meson wave function

Non-perturbative QCD Effect on K-Factor of Drell-Yan Process

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Communications in Theoretical Physics 2006年第3期45卷 517-520页

作者： hou zhao-yu ZHI Hai-Su CHEN Jun-Xiao Mathematics and Physics Department Shijiazhuang Railway Institute Shijiazhuang 050043 China Basic Department Shijiazhuang Vocational and Technology Institute Shijiazhuang 050081 China Physics Department Hebei Normal University Shijiazhuang 050016 China

By using a non-perturbative quark propagator with the lowest-dimensional condensate contributions from the QCD vacuum, the non-perturbative egect to K-factor of the Drell-Yan process is numerically investigated for 6^12C- 6^12C collision at the center-of-mass energy √s- 200 GeV, 630 GeV respectively. Calculated results show that the non-perturbative QCD effect has just a weak influence on K-factor in the two cases.

关键词： K-factor Drell-Yan process non-perturbative QCD

Nuclear Effect Study Under K Factor's Nonconstancy

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Communications in Theoretical Physics 2002年第7期38卷 59-64页

作者： hou zhao-yu WU Wen-Wang HE Ming-Zhong ZHANG Ben-Ai Department of Physics Shijiazhuang Normal College Shijiazhuang 050801 China Graduate School the Chinese Academy of Engineering Physics Beijing 100088 China Department of Mathematics and Physics Shijiazhuang Railway College Shijiazhuang 050043 China Department of Electronics Hebei Normal University Shijiazhuang 050016 China Graduate School the Chinese Academy of Engineering Physics Beijing 100088 China

A consistent approach to estimating nuclear effect functions RA RvA (x2) and RSA(x2) based on numerical iteration technique is presented in the quark-parton model when taking into account the nonconstancy of quantum chromodynamics correction factor K. ARv (x2) and RsA(x2) correspond respectively to the valence quark distributions for one bound nucleon within the nucleus and to the sea quark ones. Related numerical analysis is given for nuclei 6 12C,20 40Ca, and 26 56Fe. As the basis, it adopts both experimental data of the high energy proton-nucleus Drell-Yan process and of the high energy lepton-nucleus deep inelastic scattering.

关键词： K-factor, Drell-Yan process, deep inelastic scattering, nuclear parton distribution

Development of diabetic complications and influencing factors among 32653 type 2 diabetes patients:retrospective cohort study using a multi-state Markov

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Medical Data Mining 2024年第2期7卷 1-8页

作者： Shu-yuan Shi hou-yu zhao Zhi-Ke Liu Ruo-Gu Meng Peng Shen Si-Yan Zhan Hong-Bo Lin Feng Sun Department of Epidemiology and Health Statistics School of Public HealthPeking UniversityBeijing 100191China China Rehabilitation Science Institute Center for Prevention and Control of Disability of China Disabled Persons FederationBeijing 100068China National Institute of Health Data Science Peking UniversityBeijing 100191China Yinzhou District Center for Disease Control and Prevention Ningbo 315100China

Background:Patients with type 2 diabetes are at high risk for developing multiple chronic ***,there is a lack of studies of the cumulative number of diabetic complications in ***:A retrospective cohort study was performed from 2009 to *** 2 diabetes patients who were first diagnosed after the age of 35 years between January 1,2009,and December 31,2017,were *** states were defined according to the number of chronic complications:no(S0),one(S1),two(S2),three(S3),and four or more complications(S4).A multi-state Markov model was constructed to estimate transition probability,transition intensity,mean sojourn time,and the possible factors for each ***:The study included 32653 type 2 diabetes patients(mean age,59.59 years;15929(48.8%)male),and mean follow-up time of 7.75 *** all,4375 transitions were *** 12-year transition probability of from state S0 to S1 was the lowest at 16.4%,while that from S2 to S3 was the highest,at 45.6%.Higher fasting blood glucose,lower high-density lipoprotein cholesterol,higher total cholesterol,and an unhealthy diet were associated with higher risk of progression from S0 to *** female,less than 60 years old,weekly physical activity,and vegetarian diet decreased this *** female and less than 60 years old reduced the likelihood of transition from S1 to S2,whereas lower high-density lipoprotein cholesterol increased this ***:Following the occurrence of two complications in type 2 diabetes patients,the risk for accumulating a third complication within a short time is significantly *** is important to take advantage of the stable window period when patients have fewer than two complications,strengthen the monitoring of blood glucose and blood lipids,and encourage patients to maintain good living habits to prevent further deterioration.

关键词： multi-state Markov model transition probability type 2 diabetes diabetic chronic complications

A real-time intelligent lithology identification method based on a dynamic felling strategy weighted random forest algorithm

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Petroleum Science 2024年第2期21卷 1135-1148页

作者： Tie Yan Rui Xu Shi-Hui Sun zhao-Kai hou Jin-yu Feng School of Petroleum Engineering Northeast Petroleum UniversityDaqing163318HeilongjiangChina Sanya Offshore Oil&Gas Research Institute Northeast Petroleum UniversitySanya572025HainanChina

Real-time intelligent lithology identification while drilling is vital to realizing downhole closed-loop drilling. The complex and changeable geological environment in the drilling makes lithology identification face many challenges. This paper studies the problems of difficult feature information extraction,low precision of thin-layer identification and limited applicability of the model in intelligent lithologic identification. The author tries to improve the comprehensive performance of the lithology identification model from three aspects: data feature extraction, class balance, and model design. A new real-time intelligent lithology identification model of dynamic felling strategy weighted random forest algorithm(DFW-RF) is proposed. According to the feature selection results, gamma ray and 2 MHz phase resistivity are the logging while drilling(LWD) parameters that significantly influence lithology identification. The comprehensive performance of the DFW-RF lithology identification model has been verified in the application of 3 wells in different areas. By comparing the prediction results of five typical lithology identification algorithms, the DFW-RF model has a higher lithology identification accuracy rate and F1 score. This model improves the identification accuracy of thin-layer lithology and is effective and feasible in different geological environments. The DFW-RF model plays a truly efficient role in the realtime intelligent identification of lithologic information in closed-loop drilling and has greater applicability, which is worthy of being widely used in logging interpretation.

关键词： Intelligent drilling Closed-loop drilling Lithology identification Random forest algorithm Feature extraction

Dynamic asymmetric mechanical responsive carbon nanotube fiber for ionic logic gate

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Chinese Chemical Letters 2024年第6期35卷 249-253页

作者： Pei Cao Yilan Wang Lejian yu Miao Wang Liming zhao Xu hou State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province(IKKEM) Xiamen 361005China The Higher Educational Key Laboratory for Biomedical Engineering of Fujian Province Department of BiomaterialsResearch Center of Biomedical Engineering of XiamenCollege of MaterialsXiamen UniversityXiamen 361005China Key Laboratory of Multifunctional Nanomaterials and Smart Systems Advanced Materials DivisionSuzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123China Institute of Artificial Intelligence Xiamen UniversityXiamen 361005China Department of Physics Research Institute for Biomimetics and Soft MatterFujian Provincial Key Laboratory for Soft Functional Materials ResearchJiujiang Research InstituteCollege of Physical Science and TechnologyXiamen UniversityXiamen 361005China Engineering Research Center of Electrochemical Technologies of Ministry of Education Xiamen UniversityXiamen 361005China

Inspired by biological ion channels,numerous artificial asymmetric ion channels have been synthesized to facilitate the fabrication of ionic ***,the creation of biomimetic asymmetric ion channels necessitates expensive scientific apparatus and intricate material processing procedures,which constrains its advancement within the realm of ionic *** this study,we have devised dynamic asymmetric ion channels with mechanical responsiveness by combining polymers of varying elastic modulus along the longitudinal axis of carbon nanotube fiber(CNTF).The ion rectification can be modulated via the disparate response of CNTF-based ion channels to mechanical *** have effectively employed these asymmetric ion channels with mechanical sensitivity in the design of a logic gate device,achieving logic operations such as“AND”and“OR”.The conception of these dynamic asymmetric ion channels with mechanical sensitivity offers a straightforward,cost-effective,and versatile approach for generating ion channels,highlighting their potential application in intricate,highly integrated ionic circuits.

关键词： Carbon nanotubes fibers Mechanical response Rectification effect Ionic logic gate

A novel Ce_(0.485)Zr_(0.485)Y_(0.03)O_(2) composite oxide with surface doping of Y and its application in Pd-only three-way catalyst

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Rare Metals 2024年第2期43卷 749-757页

作者： Zheng zhao Wei-Xin zhao Yong-Qi Zhang Mei-Sheng Cui Yong-Ke hou Dong-Ming Chen Juan-yu Yang Zong-yu Feng Xiao-Wei Huang National Engineering Research Center for Rare Earth Grirem Advanced Materials Co.Ltd.GRINM Group Corporation LimitedBeijing100088China Griem Hi-Tech Co.Ltd. Langfang065000China Rare Earth Functional Materials(Xiong’an)Innovation Venter Co.Ltd. Baoding071700China

The ceria-zirconia compound oxide-supported noble metal Pd(Pd@CZ)is widely used in three-way ***,the surface structure of CZ plays an important role in catalytic activity of ***,how to regulate the surface structure of CZ and clarify the structure–activity relationship is still a *** this paper,a strategy is proposed to develop high activity Pd@CZ nanocatalysts by tuning Y doping sites in *** precipitate-deposition method is developed to prepare the novel Ce_(0.485)Zr_(0.485)Y_(0.03)O_(2) composite with surface doping of Y(CZ-Y-S).In addition,the Pd@CZ-Y-S(Pd supported on CZ-Y-S)exhibits superior catalytic activity for HC,CO,and NO oxide,wherein,for CO and C_(3)H_(6) oxidation,the low-temperature activity of Pd@CZ-Y-S is still 20%higher than that of Pd@CZ-Y-B(Y bulk doping)and commercial Pd@CZ after 1000℃/4 h *** effect mechanism is further studied by density functional theory(DFT)*** with Pd@CZ-Y-B,Pd@CZ-Y-S shows the lower CO oxide reaction energy barriers due to the weaker adsorption strength of *** Y surface doping strategy could provide valuable insights for the development of highly efficient Pd@CZ catalyst with extensive applications.

关键词： Rare earth Ceria-zirconia-supported Pd Surface doping Experiment and theory Catalytic application