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Transactions of Tianjin University 2021年第4期27卷 313-330页

作者： Hongli Sun yunfei ma Qitao Zhang Chenliang Su International Collaboration Laboratory of 2D materials for Optoelectronics Science and Technology of Ministry of Education Shenzhen UniversityShenzhen 518060China

Single-atom catalysts(SACs),with atomically dispersed metal atoms anchored on a typical support,representing the utmost utilization effi ciency of the atoms,have recently emerged as promising catalysts for a variety of catalytic *** electronic properties of the active center of SACs are highly dependent on the local environment constituted by the single metal atom and its surrounding coordination ***,engineering the coordination environment near single metal sites,from the fi rst coordination shell to the second shell or higher,would be a rational way to design effi cient SACs with optimized electronic structure for catalytic *** wide range of coordination confi gurations,guaranteed by the multiple choices of the type and heterogeneity of the coordination element(N,O,P,S,etc.),further off er a large opportunity to rationally design SACs for satisfactory activities and investigate the structure-performance *** this review,the coordination engineering of SACs by varying the type of coordination element was elaborated and the photocatalytic water splitting of SACs was ***,challenging issues related to the coordination engineering of SACs and their photocatalytic applications were discussed to call for more eff orts devoted to the further development of single-atom catalysis.

关键词： Single-atom catalysts Coordination engineering Coordination environment Photocatalytic water splitting

Structural design and thermal performance simulation of shade roof of double-slope greenhouse for mushroom-vegetable cultivation

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International Journal of Agricultural and Biological Engineering 2019年第3期12卷 126-133页

作者： yunfei ma Xinxing Li Zetian Fu Lingxian Zhang College of Information and Electrical Engineering China Agricultural UniversityBeijing 100083China Institute of Yantai China Agricultural UniversityYantai 264670China Key Laboratory of Agricultural Informationization Standardization Ministry of Agriculture and Rural AffairsBeijing 100083China

A new type of roof structure was developed for the shade room in a double-slope greenhouse used for mushroom-vegetable planting.A simulation model was developed to evaluate the thermal performance of the new roof with an insulation thickness of 0.12 m in Beijing,*** results showed that(1)the indoor air temperature of the shade room with the newly implemented shade roof was 2.7℃-4.9℃ higher than that of an ordinary shade room during the winter months;(2)The indoor air temperature of the solar room adjacent to the shade room with the new roof was higher than that of the ordinary solar room and the minimum indoor air temperature of the solar room was increased 1.9℃ at winter night;(3)the indoor temperature of the shade room with the new roof design was 2℃-4℃ lower than that of the ordinary shade room during the summer months;(4)Under factory production conditions,which were conducted in a controlled environment to promote the annual growth of the edible fungus,the heating energy consumption of the shade room after the implementation of the new roof structure was reduced by 69.3%,the amounted to total energy savings of 61.3% per *** new roof structure provided a significant improvement in the thermal environment compared to an ordinary shade room,improved the vegetable growth in the winter,and also significantly reduced the energy consumption and production costs.

关键词： double-slope greenhouse roof structure design thermal performance simulation mushroom-vegetable planting

EFFECTS OF TRANSPORT STRESS ON THE INTESTINES INVOLVING NEURONAL NITRIC OXIDE SYNTHASE

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Frontiers of Agricultural Science and Engineering 2023年第2期10卷 285-295页

作者： Jing LAN Tonghui ma Peng YIN Kedao TENG yunfei ma College of Veterinary Medicine China Agricultural UniversityBeijing 100193China School of Engineering Medicine Beihang UniversityBeijing 100191China

Transport stress is commonly suffered by animals with gastrointestinal dysfunction a common ***,the mechanisms of transport stress-induced intestine impairment are largely *** aim of this study was to investigate the effects of transport stress on the expression of neuronal nitric oxide synthase(nNOS)and the distribution of nNOS-positive neurons of the intestines in rats and to explore the neuroendocrine mechanism of transport *** this study,Sprague Dawley rats(n=6)were subjected on a constant temperature shaker for 1(S1d)or 3 d(S3d).Rats exhibited increased serum glucose and diminished total number of leukocytes,in which lymphocytes level was also decreased in the S1d group(Pmal intestinal morphology was disrupted in the S1d rats,and the thickness of muscle layers was decreased in duodenum,jejunum and colon of S3d *** addition,it was found that nNOS expression,as well as the number of nNOSpositive neurons in the myenteric plexus were downregulated in duodenum,jejunum and colon of S3d rats compared with that of unstressed rats(Pmage and uncovers potential action mechanisms that nNOS-positive neurons and nNOS expression might be involved in modulating this process.

关键词： intestine nNOS nNOS-positive neurons transport stress

QcReads:An Adapter and Quality Trimming Tool for Next-Generation Sequencing Reads

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Journal of Genetics and Genomics 2013年第12期40卷 639-642页

作者： yunfei ma Haibing Xie Xuman Han David M.Irwin Ya-Ping Zhang School of Life Sciences University of Science and Technology of China State Key Laboratory of Genetic Resources and Evolution Kunming Institute of ZoologyChinese Academy of Sciences University of Chinese Academy of Sciences Department of Laboratory Medicine and Pathobiology University of Toronto

With the advent of next-generation sequencing （NGS） tech-nologies, it is possible to obtain huge amount of genome or transcriptome sequence with high coverage. NGS technologies are now extensively used in various fields such as genetics （Feuillet et al., 2011; Young et al., 2012; Ling et al., 2013） and clinical medicine （Kwon and Goate, 2000; Pflueger et al., 2011;

关键词： length QcReads

Leonurine protects ischemia-induced brain injury via modulating SOD, MDA and GABA levels

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Frontiers of Agricultural Science and Engineering 2019年第2期6卷 197-205页

作者： Shilei ZHENG Jingru ZHU Jiao LI Shuang ZHANG yunfei ma College of Veterinary Medicine China Agricultural University

The present study was designed to investigate the protective effects of leonurine, a compound purified from Herba Leonuri that is active on ischemic rat behavior and cortical neurons, and explore the underlying mechanism. The general rat activity, cortical neuron morphology, superoxide dismutase (SOD), malondialdehyde (MDA),γ- aminobutyric acid (GABA) and glutamate decarboxylase 67 (GAD67) levels were measured. We found leonurine significantly improve the general activity of rats in an opefield test, which was associated with attenuated neuronal damage induced by ischemia. Moreover, serum SOD activity was significantly greater, MDA level lower in the leonurine group as compared with ischemia group. In addition, GABA content in the cerebral cortex was significantly greater in high-dose leonurine group. Correspondingly, GAD67 protein level coincided with the GABA level. Taken together, our results demonstrated that leonurine attenuated brain injury during ischemia via antioxidative and anti-excitotoxicity effects by targeting GABA and leonurine might become a useful adjuvant neuroprotective agent.

关键词： cerebral ischemia GABA neuroprotection leonurine SOD

Oral administration of Allium sativum extract protects against infectious bursal disease in chickens

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Frontiers of Agricultural Science and Engineering 2015年第4期2卷 318-326页

作者： Sufen ZHAO Yuanyuan JIA Weiwei ZHANG Lili WANG yunfei ma Kedao TENG College of Veterinary Medicine China Agricultural UniversityBeijing 100193China

Garlic(Allium sativum,Liliaceae)has been safely used for more than 5000 years,and research on garlic extract is rapidly increasing because of its multiple biological *** in vivo effects of oral administration of garlic mixture(GM,water-soluble extract)on infectious bursal disease virus(IBDV)-infected specific pathogen free male white leghorn chicken were examined through histopathological,immunohistochemical,and Western blot analyses,and enzyme-linked immunosorbent *** results confirmed the protective effects of oral administration of 5 mg·kg^(–1) BW GM(Group GM1)on bursal lesions after IBDV *** particular,protein expression of IBDV in the bursa decreased in Group GM1,indicating that GM administration decreased IBDV replication in the ***,immunoglobulin M-and A-bearing B lymphocytes significantly increased 7 days post infection in bursae in Group GM1(Pma(IFN-g)increased and peaked in Group GM1 earlier than in Group T(IBDV-exposed),demonstrating that GM administration prompted the production of IFN-g to protect against IBDV infection.

关键词： garlic infectious bursal disease virus(IBDV) antiviral effect IgM-bearing B lymphocyte

On the Influences of mark Twain’s Works in China

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语言与文化研究 2014年第1期14卷 165-168页

作者： Meng Chen ma yunfei College of Humanities Tianjin Agricultural University

mark Twain is an American writer in the late 19th *** writing style is famous for satire and *** use of local language is also a feature of his *** from underclass,he pays more attention to the *** paper focuses on ex... 详细信息

关键词： mark Twain Features of works Influences

On the Influences of mark Twain's Works in China

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On the Influences of Mark Twain's Works in China

Study on the Consumer Credit Development Path of China——From the Perspective of Supply-side Reform

作者： Meng Chen ma yunfei College of Humanities Tianjin Agricultural University

关键词： mark Twain Features of works Influences

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经济管理学刊（中英文版） 2020年第2期9卷 67-72页

作者： Ding Yifan Jiasheng Zhu Junwei Xu yunfei ma School of International Economics and Trade Anhui University of Finance and EconomicsBengbuAnhui233030

With the development of China's market economy,China's consumer credit has also developed rapidly,but there are also problems such as unbalanced credit structure and uneven regional *** on the perspective of supply-side reforms,this article analyzes the opportunities and risks of China's consumer credit development,and puts forward practical and effective suggestions for problems,which is of great significance to the promotion of the healthy development of China's consumer credit.

关键词： Consumer Credit Credit Development Risks Credit Development Opportunities Countermeasures

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“中共第一代领导集体中的刘少奇”二题

党的文献 2011年第2期 42-51页

作者：马云飞中共中央文献研究室研究员北京100017

毛泽东从遵义会议开始逐步成为中共领导核心后,通过长期观察和实践检验,得出"刘少奇是白区工作正确路线的代表"的判断,得到党内高级干部的一致认可。特别是1937年白区工作会议上刘少奇对以前白区工作上的"左"倾错误的尖锐批评,和六届六... 详细信息

毛泽东从遵义会议开始逐步成为中共领导核心后,通过长期观察和实践检验,得出"刘少奇是白区工作正确路线的代表"的判断,得到党内高级干部的一致认可。特别是1937年白区工作会议上刘少奇对以前白区工作上的"左"倾错误的尖锐批评,和六届六中全会上刘少奇强调独立自主、反驳王明"一切经过统一战线"的观点,毛泽东给予高度赞赏和支持。刘少奇从此进入中央领导核心层。在中共第一代中央领导集体中,刘少奇一直是排在毛泽东之后的"第二把手"。他几乎参与了党中央的所有重大决策,在毛泽东不能主持中央工作期间代理主席职务,在中央工作分为一线二线后主持一线工作。但不能因此认定他是毛泽东选定的"接班人"。1961年毛泽东同蒙哥马利的谈话中说刘少奇是他的接班人,应更多地是出于外交策略考虑。

关键词：刘少奇毛泽东中共第一代中央领导集体