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Unified Symmetry and Conserved Quantities of Mechanical System in Phase Space

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Communications in Theoretical Physics 2006年第1X期46卷 97-100页

作者： FANG jian-hui DING ning WANG Peng College of Physics Science and Technology China University of Petroleum Dongying 257061 China

In this paper, a new symmetry and its conserved quantities of a mechanical system in phase space are studied. The defition of this new symmetry, i.e., a unified one is presented, and the criterion of this symmetry is also given. The Noether, the generalized Hojman and the Mei conserved quantities of the unified symmetry of the system are obtained. The unified symmetry contains the Noether, the Lie and the Mei symmetries, and has more generalized significance.

关键词： unified symmetry mechanical system conserved quantity phase space

Perturbation to Lie Symmetry and Hojman Exact and Adiabatic Invariants of Generalized Raitzin Canonical Equation of Motion

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Communications in Theoretical Physics 2007年第4X期48卷 615-618页

作者： WANG Peng FANG jian-hui DING ning ZHANG Xiao-Ni College of Physics and Technology China University of Petroleum Dongying 257061 China

In this paper, firstly, we get the Hojman exact invariants by Lie symmetry for an undisturbed generalized Raitzin equation of motion. Secondly, we study the perturbation to Lie symmetry of generalized Raitzin canonical equation of motion and get Hojman adiabatic invariants. Lastly, an example is given to illustrate the application of the results.

关键词： generalized mechanics symmetry Raitzin canonical equation perturbation adiabatic invariant

Connection Among Some Optimal Criteria for Symmetrical Fractional Factorial Designs

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Acta Mathematicae Applicatae Sinica 2005年第4期21卷 545-552页

作者： Hong Qin Ming-yao Ai jian-hui ning Faculty of Mathematics and Statistics Central China Normal University Wuhan 430079 China Faculty of Mathematics and Statistics Beijing University Beijing 100871 China

A fundamental and practical question for fractional factorial designs is the issue of optimal factor assignment. Recently, some new criteria, such as generalized minimum aberration, WV-criterion, NB-criterion and uniformity criterion are proposed for comparing and selecting fractions. In this paper, we indicate that these criteria agree quite well for symmetrical fraction factorial designs.

关键词： Fractional factorial designs generalized minimum aberration NB-criterion uniformity criterion,WV-criterion

Two Types of New Conserved Quantities and Mei Symmetry of Mechanical Systems in Phase Space

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Communications in Theoretical Physics 2007年第12期48卷 993-995页

作者： WANG Peng FANG jian-hui DING ning College of Physics Science and Technology,China University of Petroleum,Dongying 257061,China College of Physics Science and Technology China University of Petroleum

In this paper,two types of new conserved quantities directly deduced by Mei symmetry in phase space *** conditions under which Mei symmetry can directly lead to the two types of new conserved quantities andthe forms o... 详细信息

关键词： phase space Mei symmetry conserved quantity

Hojman Exact Invariants and Adiabatic Invariants of Hamilton System

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Communications in Theoretical Physics 2007年第12期48卷 996-998页

作者： WANG Peng FANG jian-hui DING ning ZHANG Xiao-Ni College of Physics Science and Technology,China University of Petroleum,Dongying 257061,China College of Physics Science and Technology China University of Petroleum

The perturbation to Lie symmetry and adiabatic invariants are *** on the concept of higher-order adiabatic invariants of mechanical systems with action of a small perturbation,the perturbation to Lie symmetryis studied,and Hojman adiabatic invariants of Hamilton system are *** example is given to illustrate theapplication of the results.

关键词： Hamilton system symmetry exact invariant adiabatic invariant

Loss-of-function mutations of microRNA-142-3p promote ASH1L expression to induce immune evasion and hepatocellular carcinoma progression

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World Journal of Gastroenterology 2025年第1期31卷 126-145页

作者： Xing-hui Yu Yan Xie jian Yu Kun-ning Zhang Zhou-Bo Guo Di Wang Zhao-Xian Li Wei-Qi Zhang Yu-Ying Tan Li Zhang Wen-Tao jiang School of Medicine Nankai UniversityTianjin 300192China Tianjin Key Laboratory of Molecular Diagnosis and Treatment of Liver Cancer Tianjin First Center HospitalTianjin 300192China Department of Liver Transplantation Tianjin First Center HospitalTianjin 300192China First Central Clinical School Tianjin Medical UniversityTianjin 300192China

BACKGROUND Hepatocellular carcinoma(HCC)has been a pervasive malignancy throughout the world with elevated *** therapeutic targets are beneficial to treat and predict the ***,the exact molecular mechanisms leading to the progression of HCC are still *** has shown that the microRNA-142-3p level decreases in HCC,whereas bioinformatics analysis of the cancer genome atlas database shows the ASH1L expression increased among liver tumor *** this paper,we will explore the effects and mechanisms of microRNA-142-3p and ASH1L affect the prognosis of HCC patients and HCC cell bioactivity,and the association between *** To investigate the effects and mechanisms of microRNA-142-3p and ASH1L on the HCC cell bioactivity and prognosis of HCC *** In this study,we grouped HCC patients according to their immunohistochemistry results of ASH1L with pathological tissues,and retrospectively analyzed the prognosis of HCC ***,explored the roles and mechanisms of microRNA-142-3p and ASH1L by cellular and animal experiments,which involved the following experimental methods:Immunohistochemical staining,western blot,quantitative real-time-polymerase chain reaction,flow cytometric analysis,tumor xenografts in nude mice,*** statistical methods involved in this study contained t-test,one-way analysis of variance,theχ^(2)test,the Kaplan-Meier approach and the log-rank *** In this study,we found that HCC patients with high expression of ASH1L possess a more recurrence rate as well as a decreased overall survival ***1L promotes the tumorigenicity of HCC and microRNA-142-3p exhibits reduced expression in HCC tissues and interacts with ASH1L through targeting the ASH1L 3′untranslated ***,microRNA-142-3p promotes apoptosis and inhibits proliferation,invasion,and migration of HCC cell lines in vitro via *** the exploration mechanism,we found ASH1L may promote an immunosuppressive mi

关键词： Hepatocellular carcinoma MicroRNA-142-3p ASH1L Immune evasion Tumor immune microenvironment Apoptosis

Real-world evidence on the efficacy and safety of vonoprazanamoxicillin dual therapy for Helicobacter pylori treatment in elderly patients

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World Journal of Gastroenterology 2025年第1期31卷 68-78页

作者： Wen Gao Jing-Wen Li hui Ye Xue-Zhi Zhang jian-Xiang Liu Hong Cheng Department of Gastroenterology Peking University First HospitalBeijing 100034China School of Medicine Tsinghua MedicineTsinghua UniversityBeijing 100034China Department of Traditional Chinese Medicine and Integrative Medicine Peking University First HospitalBeijing 100034China

BACKGROUND A dual therapy regimen containing amoxicillin is a common treatment option for the eradication of Helicobacter pylori(***).While substantial research supports the efficacy and safety of vonoprazan and amoxicillin(VA)dual therapy in the general population,there is still a lack of studies specifically focusing on its safety in elderly *** To evaluate efficacy and safety of VA dual therapy as first-line or rescue treatment for *** in elderly *** As a real-world retrospective study,data were collected from elderly patients aged 60 years and above who accepted VA dual therapy(vonoprazan 20 mg twice daily+amoxicillin 1000 mg thrice daily for 14 days)for *** eradication in the Department of Gastroenterology at Peking University First Hospital between June 2020 and January *** status was evaluated by^(13)C-urease breath test 6 weeks after *** adverse events(AEs)during treatment were *** In total,401 cases were ***-one cases were excluded due to loss to follow-up,lack of re-examination,or unwillingness to take *** total of 380 included cases comprised 250 who received VA dual therapy as first-line treatment and 130 who received VA dual therapy as rescue *** was successfully eradicated in 239 cases(95.6%)in the first-line treatment group and 116 cases(89.2%)in the rescue treatment *** overall incidence of AEs was 9.5%for both ***,9.2%of patients experienced an AE in the first-line treatment group and 10.0%in the rescue treatment *** patients discontinued treatment due to AE,with a discontinuation rate of 1.3%.No serious AE *** The VA dual therapy regimen as a first-line treatment and a rescue therapy was effective and safe for elderly patients aged 60 and older.

关键词： Helicobacter pylori Vonoprazan Amoxicillin Dual therapy Elderly

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基于无差拍的DVR的控制算法及仿真

系统仿真学报 2008年第20期20卷 5493-5496页

作者：张国荣张春凤丁明苏建徽汪海宁教育部光伏系统工程研究中心合肥工业大学能源研究所合肥230009

动态电压恢复器(DVR)是目前解决电压质量问题的一种最经济、最有效的电能质量调节器。针对DVR的电压补偿信号的不确定性,将无差拍控制思想应用于DVR中,通过理论分析得到了一种DVR的无差拍控制算法,给出了算法详尽的推导过程,并用MATLAB/... 详细信息

动态电压恢复器(DVR)是目前解决电压质量问题的一种最经济、最有效的电能质量调节器。针对DVR的电压补偿信号的不确定性,将无差拍控制思想应用于DVR中,通过理论分析得到了一种DVR的无差拍控制算法,给出了算法详尽的推导过程,并用MATLAB/SIMULINK就电网电压暂降和谐波问题对其进行了仿真研究,结果表明:DVR的输出电压能良好的跟踪畸变电压分量,使负荷电压在电网电压畸变时仍能恢复到正常电压水平;而且无差拍控制还具有动态响应快,实现方便等优点。

关键词：无差拍控制动态电压恢复器逆变器预测控制

Orthogonality and D-optimality of the U-type design under general Fourier regression models

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Orthogonality and D-optimality of the U-type design under ge...