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红串红球菌感染1例报告并文献复习

中国感染控制杂志 2023年第9期22卷 1065-1071页

作者：周鹏程刘纯容鹏飞刘杨黄芳刘振国中南大学湘雅三医院感染科湖南长沙410013 中南大学湘雅三医院医院感染控制中心湖南长沙410013 中南大学湘雅三医院呼吸与危重症医学科湖南长沙410013 中南大学湘雅三医院放射科湖南长沙410013 中南大学湘雅三医院病理科湖南长沙410013

红串红球菌是低毒力的条件致病菌,人类感染罕见,国内尚缺乏报道。本文报告1例在糖尿病基础上以发热、肺结节为主要临床表现的病例,经肺穿刺活检及宏基因组二代测序证实为红串红球菌感染,在此基础上系统回顾国内外相关文献,总结该菌感染... 详细信息

红串红球菌是低毒力的条件致病菌,人类感染罕见,国内尚缺乏报道。本文报告1例在糖尿病基础上以发热、肺结节为主要临床表现的病例,经肺穿刺活检及宏基因组二代测序证实为红串红球菌感染,在此基础上系统回顾国内外相关文献,总结该菌感染的临床表现和诊治经验供国内外同行参考,以期今后对该菌感染能及时正确的诊断和治疗。

关键词：红球菌红串红球菌肺结节发热待查

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珠宝相关专业生产实习教学体系构建

教育教学论坛 2023年第30期 33-36页

作者：郭真李博房大民哈尔滨商业大学管理学院黑龙江哈尔滨150028 东北工程技术学校珠宝系黑龙江哈尔滨150030 哈尔滨市产品质量监督检测院黑龙江哈尔滨150036

珠宝相关专业的生产实习是让学生深入了解珠宝行业前沿的主要手段,为其后续深造学习或进入行业打下坚实基础。通过分析该生产实习过程中存在的主要问题,根据学校的专业特点和教学目标,从生产实习基地建设的角度梳理并整合教学内容,形成... 详细信息

珠宝相关专业的生产实习是让学生深入了解珠宝行业前沿的主要手段,为其后续深造学习或进入行业打下坚实基础。通过分析该生产实习过程中存在的主要问题,根据学校的专业特点和教学目标,从生产实习基地建设的角度梳理并整合教学内容,形成一个“以一托三,三位一体”的实习教学体系。采用多元的考核方案、外聘教师的提前介入、带队教师的素质提升,为实习教学体系提供有力的支持。结果表明该体系的实施很大程度地提高了生产实习的质量,值得借鉴。

关键词：珠宝专业宝玉石鉴定与加工生产实习实习基地建设教学体系

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基于素域构造的准循环低密度校验码

电子与信息学报 2010年第3期32卷 609-612页

作者：林国庆陈汝伟王新梅肖国镇长安大学汽车学院西安710064 西安电子科技大学综合业务网理论及关键技术国家重点实验室西安710071 桂林电子科技大学数学与计算科学学院桂林541004

该文提出一种基于素域构造准循环低密度校验码的方法。该方法是Lan等所提出基于有限域构造准循环低密度校验码的方法在素域上的推广,给出了一类更广泛的基于素域构造的准循环低密度校验码。通过仿真结果证实:所构造的这一类准循环低密... 详细信息

该文提出一种基于素域构造准循环低密度校验码的方法。该方法是Lan等所提出基于有限域构造准循环低密度校验码的方法在素域上的推广,给出了一类更广泛的基于素域构造的准循环低密度校验码。通过仿真结果证实:所构造的这一类准循环低密度校验码在高斯白噪声信道上采用迭代译码时具有优良的纠错性能。

关键词：低密度校验码准循环码素域本原元

TLR4-HMGB1-, MyD88- and TRIF-dependent signaling in mouse intestinal ischemia/reperfusion injury

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World Journal of Gastroenterology 2015年第27期21卷 8314-8325页

作者： Jie Wang Gui-zhen He Yu-Kang Wang Qian-Kun Zhu Wei Chen Tai guo Department of Parenteral and Enteral Nutrition Peking Union Medical College Hospital Centre for Translational Medicine Chinese Academy of Medical Sciences and Peking Union Medical College National Institutes for Food and Drug Control

AIM: To characterize high-mobility group protein 1-toll-like receptor 4(HMGB1-TLR4) and downstream signaling pathways in intestinal ischemia/reperfusion(I/R) ***: Forty specific-pathogen-free male C57BL/6 mice were randomly divided into five groups(n = 8 per group): sham, control, anti-HMGB1, anti-myeloid differentiation gene 88(My D88), and anti-translocatingchain-associating membrane protein(TRIF) antibody groups. Vehicle with the control Ig G antibody, antiHMGB1, anti-My D88, or anti-TRIF antibodies(all 1 mg/kg, 0.025%) were injected via the caudal vein 30 min prior to ischemia. After anesthetization, the abdominal wall was opened and the superior mesenteric artery was exposed, followed by 60 min mesenteric ischemia and then 60 min reperfusion. For the sham group, the abdominal wall was opened for 120 min without I/R. Levels of serum nuclear factor(NF)-κB p65, interleukin(IL)-6, and tumor necrosis factor(TNF)-α were measured, along with myeloperoxidase activity in the lung and liver. Inaddition,morphologic changes that occurred in the lung and intestinal tissues were evaluated. Levels of m RNA transcripts encoding HMGB1 and NF-κB were measured by real-time quantitative PCR, and levels of HMGB1 and NF-κB protein were measured by Western blot. Results were analyzed using one-way analysis of ***: Blocking HMGB 1, MyD 8 8, and TRIF expression by injecting anti-HMGB1, anti-My D88, or anti-TRIF antibodies prior to ischemia reduced the levels of inflammatory cytokines in serum; NF-κB p65: 104.64 ± 11.89, 228.53 ± 24.85, 145.00 ± 33.63, 191.12 ± 13.22, and 183.73 ± 10.81(P < 0.05); IL-6: 50.02 ± 6.33, 104.91 ± 31.18, 62.28 ± 6.73, 85.90 ± 17.37, and 78.14 ± 7.38(P < 0.05); TNF-α, 43.79 ± 4.18, 70.81 ± 6.97, 52.76 ± 5.71, 63.19 ± 5.47, and 59.70 ± 4.63(P < 0.05) for the sham, control, anti-HMGB1, anti-My D88, and anti-TRIF groups, respectively(all in pg/m L).Antibodies also alleviated tissue injury in the lung and small intestine compared with the

关键词： C57BL/6 mouse High-mobility group protein1 Intestinal ischemia-reperfusion injury Myeloid differentiationgene 88 Nuclear factor-κB translocatingchain-associating membrane protein

Design of the Radiation Baffle in Cryopanel System

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Design of the Radiation Baffle in Cryopanel System

Pressure Distribution in the Injection Line of CYCIAE-100

作者： ZHANG Su-ping PAN Gao-feng ZHANG Tian-jue LI zhen-guo

An important function of the chevron baffle in cryopanel system is to decrease the radiation heat load of ***,the motion of molecules to be pumped is baffled and the pumping speed is *** the design of the radiation baffle is a very important issue for the cyopanel system. Monte-Carlo method is used to calculate and synthetically analyze the thermal transmission coefficient and the molecular transmission coefficient of different *** calculating results could provide a reference to the design of the radiation baffle.

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Pressure Distribution in the Injection Line of CYCIAE-100

华北地区一年两熟种植模式智慧应对气候变化的水氮管理措施

作者： ZHANG Su-ping PAN Gao-feng ZHANG Tian-jue LI zhen-guo

The H external ion source will be used for CYCIAE-100,and the length of the injection line is about 2.26 *** distance from the H ion source to the median plane is about 2.77 m,1.36 m to the bottom yoke. The vacuum system layout for ion source and injection line is shown in Fig.1. A double vacuum chamber is used in the ion source *** the ion source is in operation,a quantitative hydrogen is vented into the first chamber of ion source,then pumped by two turbo molecular

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中国农业气象 2023年第6期44卷 453-468页

作者：关凯心郭尔静高继卿张文梦张镇涛周丽涛郭世博杨晓光中国农业大学资源与环境学院北京100193

基于华北地区44个气象站点1981-2020年气象、土壤和作物数据,利用农业生产系统模型(Agricultural Production Systems sIMulator,APSIM)模拟华北春玉米一年一熟和冬小麦-夏玉米一年两熟的产量、CO_(2)和N2O排放量,解析与春玉米一年一熟... 详细信息

基于华北地区44个气象站点1981-2020年气象、土壤和作物数据,利用农业生产系统模型(Agricultural Production Systems sIMulator,APSIM)模拟华北春玉米一年一熟和冬小麦-夏玉米一年两熟的产量、CO_(2)和N2O排放量,解析与春玉米一年一熟种植制度相比冬小麦-夏玉米一年两熟种植制度在周年产量提高的同时温室气体排放量的变化;在此基础上,利用APSIM模型模拟不同水氮管理措施下冬小麦-夏玉米产量和温室气体排放量,并计算氮肥农学效率和水分生产力,采取归一化方法明确各处理达到高产、高效和低排多目标协同效果的主体种植制度应对气候变化的水氮智慧管理措施,以及定量气候变化背景下华北地区不同种植制度对温室气体排放量和排放强度的影响程度,明确不同水氮管理措施下周年产量、资源利用效率和温室气体排放量的空间差异性,为华北主体种植模式智慧应对气候变化提供科学依据。结果表明:(1)1981-2020年研究区域春玉米、冬小麦-夏玉米周年单位面积温室气体排放量分别为0.48×10^(4)~1.65×10^(4)kg CO_(2)-eq·hm^(-2)和2.36×10^(4)~4.11×10^(4)kg CO_(2)-eq·hm^(-2),冬小麦-夏玉米较春玉米温室气体排放量增加了406.7%;(2)1981-2020年研究区域春玉米、冬小麦-夏玉米温室气体排放强度分别为0.08~0.35kg CO_(2)-eq·kg^(-1)和0.19~0.47kg CO_(2)-eq·kg^(-1),冬小麦-夏玉米较春玉米增加了153.8%;(3)随着冬小麦灌溉量增加,冬小麦-夏玉米周年产量和温室气体排放量均呈增加趋势,且灌溉时期对周年产量和温室气体排放量无明显影响;(4)各作物氮肥施用量在0~225kg·hm^(-2)区间时,冬小麦-夏玉米的产量和温室气体排放量随着施氮量的增加而明显增加;施氮量达到225kg·hm^(-2)之后随着施氮量增加周年产量无显著变化,但温室气体排放量显著增加。针对冬小麦-夏玉米一年两熟种植制度采取适宜的灌溉模式和施氮量,可实现周年较高产量且温室气体排放量相对较低。

关键词：气候智慧型温室气体种植制度水氮管理措施华北地区

The movement age of hidden fault and analysis on width of its effect zone from shallow seismic sounding and drilling data

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Acta Seismologica Sinica(English Edition) 2004年第Z1期17卷 94-102页

作者： YANG Xiao-ping(杨晓平) LI De-qing(李德庆) ZHAO Cheng-bin(赵成斌) LIU Bao-jin(刘保金) SUN zhen-guo(孙振国) ZHAO Jing-yao(赵景尧) Institute of Geology China Earthquake Administration Beijing 100029 China Geophysical Exploration Center China Earthquake Administration Zhengzhou 450003 China Geophysical Exploration Center China Earthquake Administration Zhengzhou 450003 China Geophysical Exploration Center China Earthquake Administration Zhengzhou 450003 China Geophysical Exploration Center China Earthquake Administration Zhengzhou 450003 China Earthquake Administration of Zhengzhou City Zhengzhou 450000 China

Field experimental seismic sounding permitted us to obtain optimal shallow seismic reflection sounding parameters. In process of data processing, we obtained a high-qualitative shallow seismic reflection sounding profile by using the techniques such as filtering, edition surgical blanking, prediction deconvolution, fitting static correlation of first arrival time, and velocity analysis. Comprehensive analysis on the information of reflection wave groups along the seismic sounding profile and the stratigraphic and neogeochronological data obtained from many drills near the sounding line reveals that the upper termination of the detected fault zone is located at depth of 75~80 m, in the Middle Pleistocene deposits dated to be about 220 ka BP. The continuity, discontinuity, in- creasing and decreasing amount of reflection wave groups and change of their configurations, in combination with geological columns of drills, permitted us to know that the width of upper termination of the fault zone is 100 m. It can be inferred from the variation of number of reflection wave groups along the profile that the scarp of hidden fault is 200 m wide and the fault is a synsedimentary active fault in the Early Pleistocene and the early stage of Middle Pleistocene. No tectonic movement, which offset the covering deposits, had occurred since the late stage of Middle Pleistocene.

关键词： shallowseismicreflectionsounding drillgeologicaldata stratumdating hiddenfault faultmovement

Transcriptional control of neurotransmitter phenotypes and their receptors in the developing dorsal spinal cord

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Transcriptional control of neurotransmitter phenotypes and t...