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500 kV智能变电站报文断链分析及处理方法的研究

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安徽电气工程职业技术学院学报 2024年第2期29卷 64-72页

作者：王晓东潘军张冬晛李梦琪国网安徽省电力有限公司超高压分公司安徽合肥231131

报文断链是智能变电站常见故障,文章介绍了GOOSE断链告警机制以及SV断链告警机制,分析了报文断链的原因,针对500 kV变电站SV及GOOSE组网方式,提出了不同类型断链的处理措施,为现场处理类似故障提供实践参考。

关键词：智能变电站 GOOSE SV 断链

基于岗位胜任力的法医临床学案例教学体系建设研究

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创新创业理论研究与实践 2024年第5期7卷 164-167页

作者：彭艳霞张冬先官莉娜杜琦洪仕君昆明医科大学法医学院云南昆明650500

该文针对目前法医临床学教学中案例教学体系存在的问题进行了研究,提出了基于岗位胜任力的法医临床学案例教学体系的建设方案。该方案以案例教学为主要形式,通过制定教学目标、设计与教学内容相匹配的案例库、教学组织方法创新融合和评... 详细信息

该文针对目前法医临床学教学中案例教学体系存在的问题进行了研究,提出了基于岗位胜任力的法医临床学案例教学体系的建设方案。该方案以案例教学为主要形式,通过制定教学目标、设计与教学内容相匹配的案例库、教学组织方法创新融合和评价教学效果等环节,构建了一套完整的法医临床学案例教学体系,以培养学生的实际操作能力和解决问题的能力为核心,旨在提高学生的综合素质和职业素养。

关键词：岗位胜任力法医临床学法医临床鉴定案例教学教学体系案例库

Bicarbonate used as a buffer for controlling nutrient solution pH value during the growth of hydroponic lettuce

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International Journal of Agricultural and Biological Engineering 2024年第3期17卷 59-67页

作者： Mengxue zhang Wenxin Wang Luming Zhong Fang Ji dongxian He Key Laboratory of Agricultural Engineering in Structure and Environment of MARA College of Water Resources&Civil EngineeringChina Agricultural UniversityBeijing 100083China

Unstable pH of nutrient solution in hydroponic systems is a major obstacle to *** simplify the management of nutrient solution pH and attenuate negative effects of pH on plant growth,this study investigated the effect of different buffer salt additions on nutrient solution pH,ion uptake,growth and photosynthesis of Yamazaki lettuce,with the equivalent concentrations of macro-element *** results indicated that the pH of nutrient solution was buffered to varying degrees by the 2 mol/L HCO_(3)^(-),1 mol/L HCO_(3)^(-),and 0.33 mol/L HPO_(4)^(2-)The 0.33 mol/L HPO_(4)^(2-)treatment fluctuated most with a pH of 1.74 units,while the addition of HCO_(3)^(-)buffered nutrient solution pH was better,with higher pH values(7.2-7.7).The CK-pH control solution,1 mol/L HCO_(3)^(-)and 0.33 mol/L HPO_(4)^(2-)treatments all promoted the uptake of ion and then the growth of lettuce was better in comparison with the CK-pH no adjustment treatment,while the 2 mol/L HCO_(3)^(-)treatment inhibited K uptake and reduced the availability of Fe,the shoot and root fresh weight of lettuce decreased by 21.3%and 10.1%,*** addition,although the chlorophyll content and net photosynthetic rate under 1 mol/L HCO_(3)^(-)and 0.33 mol/L HPO_(4)^(2-)treatments were significantly lower than the CK-pH control solution treatment,there were no significant differences in leaf length and leaf number of lettuce among them,and shoot fresh weight per plant was 83.09,82.95,and 78.92 g,*** conclusion,adding 1 mol/L HCO_(3)^(-)to the nutrient solution in a single dosage not only buffered the pH of nutrient solution better but also promoted ion uptake,it had no negative effects on the growth,photosynthesis and ion uptake of hydroponic lettuce in comparison with the CK-pH control solution ***,1 mol/L HCO_(3)^(-)can be used as a buffer during the growth of hydroponic lettuce and reduce frequent addition of acids or alkalis,and then simplify the management of nut

关键词： pH buffer nutrient solution hydroponic lettuce growth ion uptake

Identifying drivers of urban landuse changes in the Wenchuan earthquake- affected area by using night-time light data

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Journal of Mountain Science 2024年第4期21卷 1140-1159页

作者： HUANG Tao DING Mingtao GENG dongxian GAO Zemin ZHENG Hao School of Civil Engineering and Architecture Southwest University of Science and TechnologyMianyang 621010China Faculty of Geosciences and Environmental Engineering Southwest Jiaotong UniversityChengdu 611756China Analysis and Test Center of Sichuan Province Chengdu 610023China

To learn the process of urban land evolution before and after an earthquake is vital to formulate the urban reconstruction control policies and recovery measures in the earthquake-stricken ***,spatiotemporal evolution and its driving factors of urban land in earthquake-prone areas remains limited due to the scarcity of ground observation *** research,leveraging night-time light remote sensing imagery and land cover data,conducted a comprehensive analysis of the long-term evolution characteristics of urban land in earthquake-prone *** introduced methodologies for assessing the socio-economic impact and the primary natural environmental factors driving urban land evolution in these *** validate the proposed methods,the 2008 Wenchuan earthquake-affected area in China was selected as a representative study *** results indicated that the average Digital Number(DN)values in socio-economically impacted areas showed a trend of rising,falling,and then rising again after the *** values in three types of damaged areas including Type Ⅱ,Type Ⅲ,and Type Ⅳ exceeded pre-earthquake *** analysis of determinative factors influencing urban land evolution revealed that slope and elevation were key elements in controlling urban land expansion before the earthquake,whereas factors such as slope,elevation,lithology,and faults had a stronger influence on urban land expansion after the *** can be seen that,in view of the differences in the natural conditions of regions for post-disaster reconstruction,the local government need to actively adjust and adapt to urban spatial planning,so as to leverage the scale effect of large-scale inputs of funds,facilities,human resources and other factors after the disaster,thus enhancing resilience and recovery efficiency in response to disaster impacts.

关键词： Wenchuan earthquake Night-time lights Urban land Post-earthquake reconstruction

Changes of Adenylate Cyclase and Guanylate Cyclase in the Frontal Cortex,Lenticula,Corpus Amygdaloideum,and Hippocampus in Morphine‑dependent Rats

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Journal of Forensic Science and Medicine 2016年第1期2卷 1-7页

作者： Shijun Hong dongxian zhang Lihua Li School of Forensic Medicine Kunming Medical UniversityKunmingYunnanPeople’s Republic of China

To detect the changes of adenylate cyclase(AC)and guanylate cyclase(GC)in the four cerebral regions that are concerned with psychogenic dependence of morphine in rats,including the frontal cortex,lenticula,corpus amygdaloideum,and *** discuss the relation between the expressions of AC and GC with the psychogenic dependence on *** periods of morphine‑dependent rat models were established,and enzyme histochemistry was used to detect the variations of AC and GC in four cerebral *** with the control group,AC and GC in all the morphine‑dependent groups *** data indicated that the amounts of AC and GC were significantly different between the morphine‑dependent groups and the control group when tested at periods of 1 week,2 weeks,4 weeks,and 8 weeks(P<0.05 or P<0.01).There were significant differences when comparing the 1‑week group with the 2‑week,4‑week,and 8‑week groups(P<0.05 or P<0.01).There were significant differences when comparing the 2‑week dependent group with the 4‑week dependent group or the 8‑week dependent group(P<0.05 or P<0.01).The activities of AC and GC increased in four cerebral regions of morphine‑dependent *** psychogenic dependence on morphine appears to be closely linked to the upgrade of AC and GC.

关键词： Adenylate cyclase cerebral regions guanylate cyclase morphine dependence

Study on Application Effect of 6S Management Mode in Infection Control Management of Fangcang Shelter Hospital of National Exhibition and Convention Center

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Journal of Clinical and Nursing Research 2022年第5期6卷 84-93页

作者： Ting Sun Jing Feng Ning Han Ni Li Zhi Zan dongxian zhang The Third Unit of Third Branch Fangcang Shelter Hospital of National Exhibition and Convention Center(Shanghai)Xi’an 710054Shaanxi ProvinceChina Nursing Department 986 Hospital of Air ForceXi’an 710054Shaanxi ProvinceChina Department of Otolaryngology 986 Hospital of Air ForceXi’an 710054Shaanxi ProvinceChina Department of Gastroenterology 986 Hospital of Air ForceXi’an 710054Shaanxi ProvinceChina Department of Training and Rehabilitation 986 Hospital of Air ForceXi’an 710054Shaanxi ProvinceChina Department of Oncology 986 Hospital of Air ForceXi’an 710054Shaanxi ProvinceChina

Objective:In 2022,a pneumonia caused by novel coronavirus broke out in Shanghai.A large number of medical personnel were deployed nationwide to support the Fangcang Shelter Hospital of National Exhibition and Convention Center(Shanghai).Because the of the underdeveloped infrastructure and the disorganized layout process,the phenomenon of infection among medical personnel was rampant given the highly contagious nature of the Omicron *** paper discusses the effect of 6S management in infection control management of Fangcang Shelter Hospital of National Exhibition and Convention Center(Shanghai).Methods:A series of 6S management practices were carried out based on the evaluation of the control management of Fangcang Shelter Hospital of National Exhibition and Convention Center(Shanghai)during the anti-epidemic period,and the effect of the implementation of 6S management was studied based on the rapport among team members and the overall control system process,the management of wearing and stripping channels,the time of wearing protective articles and the psychological and emotional changes of the team ***:After the implementation of 6S management mode,the management of dressing room,epidemic prevention materials,and occupational protection awareness and infection control safety were significantly *** than 95.5%of the team members believed that improving the working environment in the shelter increased the confidence of victory in the fight against the epidemic,reduced the preparations before entering and leaving the cabin,improved the work efficiency and ensured occupational *** ensures the realization of the goal of“zero infection”and is set as a benchmark of control work of Fangcang Shelter Hospital of National Exhibition and Convention Center(Shanghai).Conclusion:The application of 6S management mode to the shelter infection control management can create and maintain a good working environment in the shelter,promote the implement

关键词： Mobile cabin hospital Infection control management 6S management Application effect

褪黑素对小鼠抑郁样行为和BDNF-ERK-CREB信号通路的作用

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中国病理生理杂志 2023年第12期39卷 2141-2149页

作者：严赫李雄丁佳萌张冬先昆明医科大学法医学院云南昆明650500 国家卫健委毒品依赖和戒治重点实验室云南昆明650500

目的:探讨褪黑素(MEL)对慢性束缚应激(CRS)诱导的小鼠抑郁样行为的影响及其机制。方法:将48只SPF级雄性C57BL/6J小鼠随机分成对照组(n=12)和CRS组(n=36),再将CRS组分为CRS+vehicle、CRS+氟西汀(FLX)和CRS+MEL三个亚组(n=12)。CRS组小鼠... 详细信息

目的:探讨褪黑素(MEL)对慢性束缚应激(CRS)诱导的小鼠抑郁样行为的影响及其机制。方法:将48只SPF级雄性C57BL/6J小鼠随机分成对照组(n=12)和CRS组(n=36),再将CRS组分为CRS+vehicle、CRS+氟西汀(FLX)和CRS+MEL三个亚组(n=12)。CRS组小鼠经14 d的CRS建模后明确抑郁样行为的变化,随后给予14 d的药物干预和CRS后再次检测行为学变化。取脑组织进行尼氏染色、RT-qPCR、Western blot及免疫荧光染色。结果:与对照组相比,CRS组小鼠体重增长显著下降,强迫游泳实验和悬尾实验不动时间显著增加,糖水消耗量显著减少,旷场实验中央停留时间和中央运动距离均显著缩短(P<0.01)。与CRS+vehicle组相比,CRS+FLX组和CRS+MEL组CRS诱导的小鼠抑郁样行为被显著逆转,额叶皮层和海马中脑源性神经营养因子(BDNF)、细胞外信号调节激酶(ERK)和cAMP反应元件结合蛋白(CREB)的mRNA水平,以及BDNF、磷酸化ERK1/2和CREB蛋白水平均显著升高(P<0.01)。尼氏染色结果显示,CRS+vehicle组小鼠神经元排列不规则,尼氏小体数量减少(P<0.01),而CRS+FLX组和CRS+MEL组小鼠神经元状态显著改善(P<0.01)。免疫荧光染色结果显示,与对照组相比,CRS+vehicle组小鼠额叶皮层和海马CA1区的c-Fos阳性细胞数量均显著增加(P<0.01);与CRS+vehicle组相比,CRS+FLX组和CRS+MEL组小鼠额叶皮层和海马CA1区的c-Fos阳性细胞数量均显著减少(P<0.01)。结论:MEL能够显著缓解CRS诱导的小鼠抑郁样行为,其机制可能与激活BDNF-ERK-CREB信号通路有关。

关键词：抑郁症褪黑素氟西汀 BDNF-ERK-CREB信号通路

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基于白光干涉的自稳定定量相位成像系统

光学学报 2008年第7期28卷 1279-1282页

作者：李新弘章海军张冬仙浙江大学现代光学仪器国家重点实验室浙江杭州310027

提出和建立了基于白光干涉的自稳定定量相位成像系统。该系统以柯勒照明的白光迈克耳孙干涉计为基础,使用自稳定锁相电路以减少相位噪音,引入相移装置获得定量的相位图像。实验分别以平面镜、标准测试图和聚苯乙烯小球为样品,获得了清... 详细信息

提出和建立了基于白光干涉的自稳定定量相位成像系统。该系统以柯勒照明的白光迈克耳孙干涉计为基础,使用自稳定锁相电路以减少相位噪音,引入相移装置获得定量的相位图像。实验分别以平面镜、标准测试图和聚苯乙烯小球为样品,获得了清晰的定量相位图像,实现了对样品的实时观测。该装置采用卤素灯照明,达到轴向分辨力5 nm,系统中的柯勒照明结构使其具有高空间相干性。实验结果表明,该装置能有效避免系统中其他光学表面(如系统中的透镜表面)干扰信号的影响。

关键词：白光干涉定量相位成像迈克耳孙干涉柯勒照明自稳定

双成像单元原子力显微镜及其在大范围纳米计量中的应用

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仪器仪表学报 2005年第10期26卷 991-993,997页

作者：林晓峰章海军张冬仙浙江大学现代光学仪器国家重点实验室杭州310027

为了实现大范围纳米计量,研制了双成像单元原子力显微镜,采用光栅作参考样品,同时对光栅和被测样品扫描成像,得到两幅具有相同横向尺度的图像,通过计算参考光栅的周期数,就能精确测定被测样品图像的尺寸。提出了一种实现大范围扫描和纳... 详细信息

为了实现大范围纳米计量,研制了双成像单元原子力显微镜,采用光栅作参考样品,同时对光栅和被测样品扫描成像,得到两幅具有相同横向尺度的图像,通过计算参考光栅的周期数,就能精确测定被测样品图像的尺寸。提出了一种实现大范围扫描和纳米计量的新方法,利用步进电机交替移动XY扫描器,扫描获得一系列的光栅样品图像和被测样品图像对,通过拼接对应的序列图像,可获得两幅大范围的光栅图像和被测样品图像,计数参考图像中光栅的周期数,即可测定被测图像的尺度,实现对被测图像的大范围纳米计量。

关键词：双成像单元原子力显微镜序列图像拼接大范围纳米计量