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Solvability of finite groups

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Frontiers of Mathematics in China 2017年第6期12卷 1501-1514页

作者： Jia ZHANG Baijun GAO long miao School of Mathematics and Information China West Normal University Nanchong 637009 China School of Mathematics and Statistics Yili Normal University Yining 835000 China School of Mathematical Sciences Yangzhou University Yangzhou 225002 China

H is called an Mp-embedded subgroup of G, if there exists a pnilpotent subgroup B of G such that Hp E Sylp（B） and B is Mp-supplemented in G. In this paper, by considering prime divisor 3, 5, or 7, we use Mp-embedded property of primary subgroups to investigate the solvability of finite groups. The main result is follows. Let E be a normal subgroup of G, and let P be a Sylow 5-subgroup of E. Suppose that 1 〈 d ≤ ｜P｜ and d divides ｜P｜. If every subgroup H of P with ｜H｜ = d is M5-embedded in G, then every composition factor of E satisfies one of the following conditions：（1） I/C is cyclic of order 5, （2） I/C is 5＇-group, （3） I/C A5.

关键词： Composition factor Mp-embedded subgroup primary subgroup solvable

On p-CAP-subgroups of finite groups

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Frontiers of Mathematics in China 2020年第5期15卷 915-921页

作者： Zhichao GAO Shonhong QIAO Huaguo SHI long miao School of Mathematical Sciences Yangzhou UniversityYangzhou 225002China School of Applied Mathematics Guangdong University of TechnologyGuangzhou 510520China Education faculty Sichuan Vocational and Technical CollegeSuining 629000China

Suppose that G is a finite group and H is a subgroup of G.H is said to be a p-CAP-subgroup of G if H either covers or avoids each pd-chief factor of *** give some characterizations for a group G to be p-solvable under... 详细信息

关键词： Maximal subgroups 2-maximal subgroups p-CAP-subgroups

Mechanisms by which microbial enzymes degrade four mycotoxins and application in animal production:A review

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Animal Nutrition 2023年第4期15卷 256-274页

作者： Huiying Sun Ziqi He Dongwei Xiong miao long Key Laboratory of Livestock Infectious Diseases Ministry of EducationKey Laboratory of Ruminant Infectious Disease Prevention and Control(East)Ministry of Agriculture and Rural AffairsChina College of Animal Science and Veterinary Medicine Shenyang Agricultural UniversityShenyang110866China

Mycotoxins are toxic compounds that pose a serious threat to animal health and food ***,there is an urgent need for safe and efficient methods of detoxifying *** biotechnology has continued to develop,methods involving biological enzymes have shown great *** enzymatic methods,which can fundamentally destroy the structures of mycotoxins and produce degradation products whose toxicity is greatly reduced,are generally more specific,efficient,and environmentally ***-degrading enzymes can thus facilitate the safe and effective detoxification of mycotoxins which gives them a huge advantage over other *** article summarizes the newly discovered degrading enzymes that can degrade four common mycotoxins(aflatoxins,zearalenone,deoxynivalenol,and ochratoxin A)in the past five years,and reveals the degradation mechanism of degrading enzymes on four mycotoxins,as well as their positive effects on animal *** review will provide a theoretical basis for the safe treatment of mycotoxins by using biological enzyme technology.

关键词： Mechanism Microbial enzyme Degradation Mycotoxin

New Criteria for Quasi-F-Groups

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Communications in Mathematics and Statistics 2019年第1期7卷 25-32页

作者： Juping Tang Jia Zhang long miao Wuxi Institute of Technology Wuxi 214121China School of Mathematics and Information China West Normal UniversityNanchong 637009China School of Mathematical Sciences Yangzhou UniversityYangzhou 225002China

Let G be a finite group and F a saturated formation of finite *** G is a quasi-F-group if for every F-eccentric chief factor H/K of G and every x∈G,x induces an inner automorphism on H/*** this article,we obtain some... 详细信息

关键词： Quasi-F-groups Sylow subgroups M-supplemented subgroups Solubly saturated formation

Notes on Solvability and p-Supersolvability of Finite Groups

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Algebra Colloquium 2019年第1期26卷 139-146页

作者： Jia Zhang Tingting Qiu long miao Juping Tang School of Mathematics and Information China West Normal University Nanchong Sichuan 637009 China Yancheng Biological Engineering Higher Vocational Technology School Yancheng Jiangsu 224000 China School of Mathematical Sciences Yangzhou University Yangzhou Jiangsu 225002 China Wuxi Institute of Technology Wuxi Jiangsu 214121 China

A subgroup H of G is called M-supplemented in G if there exists a subgroup B of G such that G = HB and HiB < G for every maximal subgroup Hi of H. In this paper, we use M-suppiemented subgroups to study the structure of finite groups and obtain some new characterization about solvability and p-supersolvability for a fixed prime p. Some results in the literature are corollaries of our theorems.

关键词： M-supplemented subgroup composition factor solvable p-supersolvable

A global model for evaluating discharge characteristics and performance of hollow cathodes

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Chinese Journal of Aeronautics 2024年第9期37卷 72-84页

作者： Feng TIAN long miao Qimeng XIA Zhiwen WU Ningfei WANG Xiao HOU School of Aerospace Engineering Beijing Institute of TechnologyBeijing 100081China Chongqing Innovation Center Beijing Institute of TechnologyChongqing 404100China

Hollow cathode,with the highest plasma density,current density,and temperature,becomes one of the most important components in the electro-thruster *** the electric-propulsion thruster performance is directly related to the ionization rate,reliability,and lifetime of the hollow cathode,this paper develops a global model to study the effects of discharge current,gas flow rate,and gas species on the discharge characteristics in the insert and orifice regions of the hollow *** emitter wall temperatures of hollow cathodes predicted by the global model are compared with experimental results from NSTAR thruster neutralization cathodes,confirming the model's *** influence of hollow cathode emitter material and structure sizes on the plasma parameters in the internal regions was also *** simulation results show that there is an optimal matching relationship between the discharge current and gas flow rate to guarantee the maximum ionization *** optimal working region for the hollow cathode has been deter-mined under different energetic,regime and structural *** global model established in this paper can quickly determine the key structure and operating parameters of hollow cathode at the design stage,and provide the theoretical basis for hollow cathode design and development.

关键词： Hollow cathode Global model Electric propulsion Discharge characteristics Optimal matching relationship

Damage on intestinal barrier function and microbial detoxification of deoxynivalenol:A review

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Journal of Integrative Agriculture 2024年第8期23卷 2507-2524页

作者： Jia Chen Xinran Zhang Ziqi He Dongwei Xiong miao long Key Laboratory of Livestock Infectious Diseases Ministry of Education/College of Animal Science and Veterinary Medicine ShenyangAgricultural UniversityShenyang 110866China

Deoxynivalenol(DON)is a mycotoxin that is produced by various species of Fusarium and is ubiquitous in food and *** low concentrations,it can cause metabolic disorders in animals and humans and,at high concentrations,it can lead to pathological changes in the *** impact of DON on human/animal health and animal productivity has thus attracted a great deal of attention around the *** causes severe damage to the intestine,including compromised intestinal barrier,mucosal damage,weakened immune function,and alterations in gut microbiota *** effects exacerbate intestinal infections and inflammation in livestock and poultry,posing adverse effects on overall ***,research into biological methods for DON detoxification is a crucial avenue for future *** includes the utilization of adsorption,enzymatic degradation,and other biological approaches to mitigate DON's impact,offering new strategies for prevention and treatment of DON-induced *** research will focus on identifying highly efficient detoxifying microorganisms or enzymes to reduce DON levels in food and feed,thereby mitigating its risks to both animals and human health.

关键词： deoxynivalenol(DON) intestinal barrier function mucus barrier immune function flora composition biological detoxification

Transformation:how do nematode sperm become activated and crawl?

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Protein & Cell 2012年第10期3卷 755-761页

作者： Xuan Ma Yanmei Zhao Wei Sun Katsuya Shimabukuro long miao Laboratory of Noncoding RNA Institute of BiophysicsChinese Academy of SciencesBeijing 100101China Graduate University of Chinese Academy of Sciences Beijing 100049China Department of Chemical and Biological Engineering Ube National College of TechnologyUbeYamaguchi 755-8555Japan

Nematode sperm undergo a drastic physiological change during spermiogenesis(sperm activation).Unlike mammalian flagellated sperm,nematode sperm are amoeboid cells and their motility is driven by the dynamics of a cytoskeleton composed of major sperm protein(MSP)rather than actin found in other crawling *** review focuses on sperm from Caenorhabditis elegans and Ascaris suum to address the roles of external and internal factors that trigger sperm activation and power sperm *** sperm can be activated in vitro by several factors,including Pronase and ionophores,and in vivo through the TRY-5 and SPE-8 ***,protease and protease inhibitors are crucial regulators of sperm ***-based sperm motility involves a coupled process of protrusion and retraction,both of which have been reconstituted in *** motility is mediated by phosphorylation signals,as illustrated by identification of several key components(MPOP,MFPs and MPAK)in Ascaris and the characterization of GSP-3/4 in ***.

关键词： spermiogenesis major sperm protein sperm motility

Electromagnetic control of the instability in the liquid metal flow over a backward-facing step

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Chinese Physics B 2022年第12期31卷 306-314页

作者： Ya-Dong Huang Jia-Wei Fu long-miao Chen Jiangsu University Zhenjiang 212013China Nanjing University of Science and Technology Nanjing 210094China

The tile-type electromagnetic actuator(TEA)and stripe-type electromagnetic actuator(SEA)are applied to the active control of the perturbation energy in the liquid metal flow over a backward-facing step(BFS).Three control strategies consisting of base flow control(BFC),linear model control(LMC)and combined model control(CMC)are considered to change the amplification rate of the perturbation *** is the combination of BFC and *** is utilized in BFC to produce the streamwise Lorentz force thus adjusting the amplification rate via modifying the flow structures,and the magnitude of the maximum amplification rate could reach to 6 *** is used in LMC to reduce the magnitude of the amplification rate via the wall-normalwise Lorentz force,and the magnitude could be decreased by 2 *** TEA and SEA are employed in CMC where the magnitude of the amplification rate could be diminished by 3 *** other words,the control strategy of CMC could capably alter the flow instability of the liquid metal flow.

关键词： electromagnetic actuator backward-facing step flow flow instability flow control