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A New sufficient Condition for Graphs to Be Traceable

江苏教育学院学报（自然科学版） 2005年第3期21卷 62-66页

作者： SHAO Yi - xin xu xin - ping School of Science Southern Yanthze University Wuxi 214063 Department of Mathematics Jiangsu Institute of Education Nanjing 210013

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Dose-dependent Cardiac Dysfunction and Structural Damage in Rats after Shortwave Radiation

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Biomedical and Environmental Sciences 2020年第8期33卷 603-613页

作者： ZHANG Jing YU Chao YAO Bin Wei WANG Hui ZHAO Li xu xin ping DONG Ji WANG Hao Yu HAO Yan Hui PENG Rui Yun Department of Experimental Pathology Institute of Radiation MedicineAcademy of Military Medical SciencesBeijing 100850China

Objective To detect the effects of shortwave radiation on dose-dependent cardiac structure and function in rats after radiation and to elucidate the mechanism of shortwave radiation induced cardiac injury to identify sensitive indicators and prophylactic *** One hundred Wistar rats were either exposed to 27 MHz continuous shortwave at a power density of 5,10,and 30 mW/cm^2 for 6 min or undergone sham exposure for the control(the rats had to be placed in the exposure system with the same schedules as the exposed animals,but with an inactive antenna).The Ca^2+,glutamic oxaloacetic transaminase(AST),creatine kinase(CK)and lactate dehydrogenase(LDH)content in the peripheral serum of the rats were detected by an automatic blood biochemical *** electrocardiogram(ECG)of standard lead II was recorded by a multi-channel physiological recording and analysis *** cardiac structure of rats was observed by light and electron *** The results showed that the 5,10,and 30 mW/cm^2 shortwave radiation caused a significant increased in the levels of Ca2+,AST,CK,and LDH in the peripheral serum of *** cardiac structure was damaged by radiation and showed a disordered arrangement of myocardial fibres,the cavitation and swelling of myocardial *** injuries were most significant 7 d after radiation and were not restored until 28 d after *** Shortwave radiation of 5,10,and 30 mW/cm^2 can damage rat cardiac function,including damage to the tissue structure and ultrastructure,especially at the level of the myocardial fibres and *** radiation at 5,10,and 30 mW/cm^2 induced damage to rat heart function and structure with a dose-effect relationship,i.e.,the greater the radiation dose was,the more significant the damage was.

关键词： Shortwave Rat heart Function Structure Damage effect Dose dependence

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Behavioral Abnormality along with NMDAR-related CREB Suppression in Rat Hippocampus after Shortwave Exposure

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Biomedical and Environmental Sciences 2019年第3期32卷 189-198页

作者： YU Chao BAI Yan xin xu xin ping GAO Ya Bing HAO Yan Hui WANG Hui TAN Sheng Zhi LI Wen Chao ZHANG Jing YAO Bin Wei DONG Ji ZHAO Li PENG Rui Yun Department of Experimental Pathology Beijing Institute of Radiation Medicine

Objective To estimate the detrimental effects of shortwave exposure on rat hippocampal structure and function and explore the underlying mechanisms. Methods One hundred Wistar rats were randomly divided into four groups(25 rats per group) and exposed to 27 MHz continuous shortwave at a power density of 5, 10, or 30 m W/cm^2 for 6 min once only or underwent sham exposure for the control. The spatial learning and memory, electroencephalogram(EEG), hippocampal structure and Nissl bodies were analysed. Furthermore, the expressions of N-methyl-D-aspartate receptor(NMDAR) subunits(NR1, NR2 A, and NR2 B), c AMP responsive element-binding protein(CREB) and phosphorylated CREB(p-CREB) in hippocampal tissue were analysed on 1, 7, and 14 days after exposure. Results The rats in the 10 and 30 m W/cm^2 groups had poor learning and memory, disrupted EEG oscillations, and injured hippocampal structures, including hippocampal neurons degeneration, mitochondria cavitation and blood capillaries swelling. The Nissl body content was also reduced in the exposure groups. Moreover, the hippocampal tissue in the 30 m W/cm^2 group had increased expressions of NR2 A and NR2 B and decreased levels of CREB and p-CREB. Conclusion Shortwave exposure(27 MHz, with an average power density of 10 and 30 m W/cm^2) impaired rats' spatial learning and memory and caused a series of dose-dependent pathophysiological changes. Moreover, NMDAR-related CREB pathway suppression might be involved in shortwave-induced structural and functional impairments in the rat hippocampus.

关键词： Shortwave exposure Learning and memory Hippocampus NMDAR CREB

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Dose-Dependent, Frequency-Dependent, and Cumulative Effects on Cardiomyocyte Injury and Autophagy of 2.856 GHz and 1.5 GHz Microwave in Wistar Rats

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Biomedical and Environmental Sciences 2022年第4期35卷 351-355页

作者： ZHANG Bo ZHANG Jing YAO Bin Wei xu xin ping WANG Hui ZHAO Li DONG Ji WANG Hao Yu TAN Sheng Zhi PENG Rui Yun Department of Experimental Pathology Beijing Institute of Radiation MedicineBeijing 100850China Department of Pathology Beiya Orthopedic HospitalBeijing 100102China

With the in creasing use of microwave technology in wireless communication,medical research,and other fields,the risk of energy leakage and excessive human exposure requires more *** to a certain frequency of microwave has been found to have harmful effects on multiple organs,including the heart[1-3],which is an important organ for blood circulation and any injury to which can cause a series of adverse consequences.

关键词： organs microwave consequences

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Transcriptome Sequencing of mRNA and lncRNA in Hippocampal Tissues of Rats under Microwave Exposure

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Biomedical and Environmental Sciences 2022年第11期35卷 1079-1084页

作者： ZHU Rui Qing SONG Le Quan JIANG Lin LIU Yu ZHAO Li WANG Hao Yu ZHANG Jing xu xin ping DONG Ji YAO Bin Wei ZHAO xue Long WANG Hui SHI xu Liang PENG Rui Yun Beijing Institute of Radiation Medicine Beijing 100850China College of Education Hebei UniversityBaoding 071002HebeiChina

Microwave-related devices are commonly used.A certain dose of microwave might induce cognitive injuries[1].The frequency of mobile 4G communication and wireless networks is located in the L-band and C-band range,respe... 详细信息

关键词： injuries Microwave microwave

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Inhibition of Micro RNA 219 Expression Protects Synaptic Plasticity via Activating NMDAR1, Ca MKIIγ,and p-CREB after Microwave Radiation

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Biomedical and Environmental Sciences 2020年第5期33卷 359-364页

作者： ZHAO Li XIONG Lu HAO Yan Hui LI Wen Chao DONG Ji ZHANG Jing YAO Bin Wei xu xin ping WANG Li Feng ZHOU Hong Mei PENG Rui Yun Beijing Institute of Radiation Medicine Beijing 100850China Department of Pathology Beijing Zhongguancun HospitalBeijing 100190China

In recent decades,the potential health hazards of microwave exposure have been attracting increasing *** previous studies have demonstrated that microwave exposure impaired learning and memory in experimental animal m... 详细信息

关键词： and p-CREB after Microwave Radiation Ca MKII Inhibition of Micro RNA 219 Expression Protects Synaptic Plasticity via Activating NMDAR1 NMDAR RNA

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论林白水新闻伦理思想及其道德缺失

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湖南师范大学社会科学学报 2015年第5期44卷 146-153页

作者：徐新平湖南师范大学新闻与传播学院

林白水是晚清和民国时期著名的报人,资产阶级民主革命家,中国白话报的先驱。他在20余年的办报生涯中,发表了许多阐述新闻伦理思想的论文,提出了一些富有创见的观点。他认为,记者办报应有正确的动机;要具备"说人话、不说鬼话"的专业主义... 详细信息

林白水是晚清和民国时期著名的报人,资产阶级民主革命家,中国白话报的先驱。他在20余年的办报生涯中,发表了许多阐述新闻伦理思想的论文,提出了一些富有创见的观点。他认为,记者办报应有正确的动机;要具备"说人话、不说鬼话"的专业主义品格;要有敢于斗争的硬骨头精神。他的这些观点及其道德实践体现了军阀统治时期新闻记者特有的精神个性。但是,林白水在新闻活动中也有道德缺失的一面,最突出的表现就是收受津贴、公开利用报纸卖文和常常侮辱谩骂他人。他的理论主张和实践行为,为我们了解和认识当时记者的生存状态与伦理选择提供了重要的依据。

关键词：林白水新闻伦理思想道德缺失

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Microwave Exposure Impairs Synaptic Plasticity in the Rat Hippocampus and PC12 Cells through Over-activation of the NMDA Receptor Signaling Pathway

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Biomedical and Environmental Sciences 2015年第1期28卷 13-24页

作者： XIONG Lu SUN Cheng Feng ZHANG Jing GAO Ya Bing WANG Li Feng ZUO Hong Yan WANG Shui Ming ZHOU Hong Mei xu xin ping DONG Ji YAO Bin Wei ZHAO Li PENG Rui Yun Beijing Institute of Radiation Medicine

Objective The aim of this study is to investigate whether microwave exposure would affect the N-methyI-D-aspartate receptor （NMDAR） signaling pathway to establish whether this plays a role in synaptic plasticity impairment. Methods 48 male Wistar rats were exposed to 30 mW/cm^2 microwave for 10 min every other day for three times. Hippocampal structure was observed through H＆E staining and transmission electron microscope. PC12 cells were exposed to 30 mW/cm^2 microwave for 5 min and the synapse morphology was visualized with scanning electron microscope and atomic force microscope. The release of amino acid neurotransmitters and calcium influx were detected. The expressions of several key NMDAR signaling molecules were evaluated. Results Microwave exposure caused injury in rat hippocampal structure and PC12 cells, especially the structure and quantity of synapses. The ratio of glutamic acid and gamma-aminobutyric acid neurotransmitters was increased and the intracellular calcium level was elevated in PC12 cells. A significant change in NMDAR subunits （NR1, NR2A, and NR2B） and related signaling molecules （CaZ＋/calmodulin-dependent kinase II gamma and phosphorylated cAMP-response element binding protein） were examined. Conclusion 30 mW/cm^2 microwave exposure resulted in alterations of synaptic structure, amino acid neurotransmitter release and calcium influx. NMDAR signaling molecules were closely associated with impaired synaptic plasticity.

关键词： Microwave Rat hippocampus PC12 Synaptic plasticity NMDA receptor signaling pathway

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Investigation on Eperythrozoon Infection in Sheep in xinjiang Region of China

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Animal Husbandry and Feed Science 2010年第3期2卷 25-27页

作者： ZHONG Fa-gang HE Li-xiong HUANG xin xu xue-ping Key Laboratory of Sheep Reproduction Biotechnology Xinjiang Production and Construction Corps Shihhotze 832000 China

[ Objective] To understand the epidemic status of Eperythrozoon ovis in sheep in xinjiang region of China. [ Method ] A total of 850 blood samples were collected from seven sheep breeding areas in xinjiang region. The Eperythrozoon ovis infection was detected by blood tablet examination, blood smear stained with Wright＇s stain and polymerase chain reaction （PCR）. [ Result] The infection rates were 97%, 97% and 75% when the samples were detected by blood tablet examination, blood smear stained with Wright＇s stain and PCR, respectively. Sheep eperythrozooo nosis occurred in the four seasons without seasonal epidemics. No obvious difference in infection rates was observed between the sheep breeding areas. The Eperythrozoon ovis infection was slight or mild in most cases, but the infection was severe in two periods, that is, from May to June and from November to December. [ Conclusion] The Eperythrozoon ovis infection is popular in sheep in xinjiang region of China, and the main inducements may be changes in seasons and forage formula.

关键词： Eperythrozoon ovis Infection rate Sheep

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论马星野新闻伦理思想

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湖南大学学报（社会科学版） 2014年第2期28卷 135-138页

作者：徐新平湖南师范大学新闻与传播学院湖南长沙410081

马星野是我国现代著名的新闻教育家、新闻理论家和国民党党报负责人。他在担任国民党中央机关报《中央日报》社社长前后,发表了许多新闻学论文,特别是1942年代表中国新闻学会执笔起草的《中国新闻记者信条》,在中国新闻事业史上有着重... 详细信息

马星野是我国现代著名的新闻教育家、新闻理论家和国民党党报负责人。他在担任国民党中央机关报《中央日报》社社长前后,发表了许多新闻学论文,特别是1942年代表中国新闻学会执笔起草的《中国新闻记者信条》,在中国新闻事业史上有着重要的地位。在新闻伦理思想方面,他提出了许多新颖深刻的见解和主张,认为记者的事业理想要因时而变;记者的责任与使命是真真实实地报道新闻,公公正正地伸张正义,诚诚恳恳地为读者服务;为了履行好自己的职业责任,记者要有不畏威胁、不为利诱和自由独立的精神品格。他的新闻伦理思想是孙中山三民主义政治观、西方自由主义新闻伦理观和中国传统史家道德三者融合的结晶。

关键词：马星野新闻伦理中央日报记者信条

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