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基于生态系统服务的汾河源头区域生态安全格局优化

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自然资源学报 2020年第4期35卷 814-825页

作者：和娟师学义付扬军中国地质大学(北京)土地科学技术学院北京100083

生态安全格局的优化是保障区域生态安全,维护生态系统稳定和提升生态系统服务的重要空间途径。以汾河源头区域为例,定量评估产水量、生境质量、土壤保持量三种生态系统服务,利用热点分析法识别重要的生态源地,考虑到河流在生态系统中复... 详细信息

生态安全格局的优化是保障区域生态安全,维护生态系统稳定和提升生态系统服务的重要空间途径。以汾河源头区域为例,定量评估产水量、生境质量、土壤保持量三种生态系统服务,利用热点分析法识别重要的生态源地,考虑到河流在生态系统中复杂的作用机制,构建了两种模式的生态安全格局,并在此基础上提出了综合生态安全格局。研究结果表明:汾河源头区域共19个生态源地,占研究区面积的16.59%,三种模式分别构建了33条、42条、43条潜在生态廊道。网络结构评估结果表明:三种模式均可生成闭合的生态网络,优化后的生态廊道总长度为565.957 km,网络闭合度、节点连接率及网络连接度较高,成本比较小。此外,共识别了35个生态断裂点,明确了生态保护与修复建设的重点区域,以期为区域生态保护与修复规划提供空间指引。

关键词：生态系统服务热点分析生态廊道生态安全格局汾河源头区域

Periarthritis of shoulder treated with Fu’s subcutaneous needling and electroacupuncture:A controlled trail

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World Journal of Acupuncture-Moxibustion 2021年第2期31卷 89-94页

作者： ying-shuai FENG Ya-ping LIN Zi-yi ZHANG Da-wei yang jun LI Department of Traditional Chinese Medicine of Hunan Provincial People's Hospital Changsha 410005China Acu-moxibustion and Massage College of Hunan University of Chinese Medicine Changsha 410007China

Objective:To observe and compare the therapeutic effect on shoulder periarthritis between Fu’s subcutaneous needling(FSN)and electroacupuncture(EA).Methods:A total of 68 patients with periarthritis of shoulder were divided into a FSN group and an EA group according to the random number table,34 cases in each *** the FSN group,FSN was adopted,once every two days,totally for 10 *** the EA group,EA was used once daily,consecutively for 20 *** pain score and shoulder function score(Constant-Murley score)before and after treatment were compared between the two *** clinical therapeutic effect was analyzed and evaluated ***:After 20-day treatment,shoulder pain score was reduced obviously as compared with that before treatment in the patients of either group(both P<0.01).After treatment,shoulder pain score in the FSN group was lower significantly than that in the EA group(P<0.01).In 20 days of treatment,CMS was improved obviously as compared with that before treatment in the patients of both groups(both P<0.01)and CMS in the FSN group was higher significantly than that in the EA group after treatment(P<0.01).The effective rate was 94.11%in the FSN group and was 91.17%in the EA *** remarkably effective rate was 73.52%in the FSN group,significantly higher than 20.58%in the EA group(P<0.01).Conclusion:Both FSN and EA are effective in treatment of periarthritis of shoulder,but FSN obtains a much higher remarkably effective rate in treatment of periarthritis of shoulder and its effects for relieving shoulder pain and improving shoulder function are superior to *** of its effective treatment and simple operation,FSN deserves to be promoted in clinical practice for periarthritis of shoulder.

关键词： Fu’s subcutaneous needling Electroacupuncture Periarthritis of shoulder Reperfusion Joint function

Electrochemical synthesis and characterization of polydiphenylamine

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Chinese Journal of Chemistry 1992年第1期10卷 10-16页

作者： DONG,Shao-jun SONG,Fa-yi LI,Zhuang Laboratory of Electroanalytical Chemistry,Changchun Institute of Applied Chemistry,The Chinese Academy of Sciences,Changchun,Jilin 130022 Laboratory of Electroanalytical Chemistry Changchun Institute of Applied Chemistry The Chinese Academy of Sciences Changchun Jilin 130022

Electrochemical oxidation of diphenylamine(DPA)in acetonitrile solution produced an adhesive conducting polydiphenylamine(PDPA)film on the electrode,which exhibited multiple colour variation in a wide range of *** polymer was characterized by cyclic voltam- merry,FTIR and *** results indicate that the electropolymerization of diphenylamine per- forms via the 4,4＇C—C phenyl-phenyl coupling ***,ESR and conductivity mea- surements for the different states of PDPA show that polydiphenylamine can be reversibly doped and dedoped either chemically or *** is evidenced also that there are paramagnetic species—polarons in PDPA supposed to be the current carrier.

关键词： Electrochemical synthesis and characterization of polydiphenylamine PDPA

地形对贺兰山步甲群落物种多样性分布格局的影响

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昆虫学报 2017年第9期60卷 1060-1073页

作者：杨益春杨贵军王杰宁夏大学生命科学学院银川750021

【目的】步甲是主要栖息于地表的种类最丰富的昆虫类群之一,它们对生境的变化更为敏感。分析地形因子对贺兰山步甲昆虫群落物种多样性分布格局的影响,以期揭示步甲昆虫物种多样性分布格局形成和稳定的机制。【方法】2015年7-8月选取贺... 详细信息

【目的】步甲是主要栖息于地表的种类最丰富的昆虫类群之一,它们对生境的变化更为敏感。分析地形因子对贺兰山步甲昆虫群落物种多样性分布格局的影响,以期揭示步甲昆虫物种多样性分布格局形成和稳定的机制。【方法】2015年7-8月选取贺兰山山地针叶林、山地疏林、山地灌丛、山地草原和浅山荒漠5种生境98个样地,用杯诱法对步甲群落物种组成和多样性进行调查,并采用典范对应分析(CCA)分析物种多样性指数和物种分布与地形因子之间的关系,运用广义可加模型(GAM)拟合不同生境步甲群落多样性指数对海拔梯度的响应曲线,探讨贺兰山步甲群落物种多样性的垂直分布格局。【结果】共采集步甲昆虫21属65种10 989头,其中,直角通缘步甲Pterostichus gebleri和径婪步甲Harpalus salinus为优势种,其个体数量分别占总捕获个体数的44.93%和11.33%。山地疏林生境步甲物种丰富度最高,山地针叶林的步甲Shannon-Wiener多样性指数最高,浅山荒漠的步甲均匀度最高。海拔、坡向、坡度、剖面曲率和地形湿度指数的综合作用对步甲物种多样性分布格局有显著影响。其中,海拔对5种生境的步甲分布影响均显著,且解释力度最高;坡向对山地针叶林和浅山荒漠步甲分布影响显著。步甲总体丰富度和个体数量与海拔呈不对称的单峰曲线关系,Shannon-Wiener多样性指数随海拔呈先递增后保持稳定的变化,均匀度指数与海拔呈"V"型变化趋势。【结论】贺兰山山地步甲物种多样性的分布格局受海拔为主的多种地形因子综合作用的影响。

关键词：步甲物种多样性分布格局地形山地贺兰山

First-order multiples imaging aided by water bottom

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Petroleum Science 2021年第6期18卷 1650-1661页

作者： Zhen-Hua Xu Sheng-He Wu Ming-Cheng Liu jun-Shou Zhao Zhao-Hui Chen Ke Zhang Jia-Jia Zhang Zhao Liu State Key Laboratory of Petroleum Resources and Prospecting China University of Petroleum-BeijingBeijing 102249China College of Geosciences China University of Petroleum-BeijingBeijing102249China Bohai Petroleum Research Institute CNOOC Tianjin BranchTianjin300459China Sinopec Geophysical Research Institute NanjingJiangsu211103China

Surface-related multiples frequently propagate into the subsurface and contain abundant information on small reflection *** with the conventional migration of primaries,migration of multiples offers complementary illumination and a higher vertical ***,crosstalk artifacts caused by unrelated multiples during reverse time migration(RTM)using multiples severely degrade the reliability and interpretation of the final migration ***,we proposed RTM using first-order receiver-side water-bottom-related multiples for eliminating crosstalk artifacts and enhancing vertical *** first backward propagate the first-order receiver-side water-bottom-related multiples using a water-layer model,followed by saving the upper boundary *** we produce the source wavefield using a seismic wavelet and the receiver wavefield by back-extrapolating the saved ***,the cross-correlation imaging condition is applied to generate the final *** method transforms the receiver-side multiples into primaries,followed by the conventional migration processing *** examples using synthetic datasets demonstrate that our method significantly enhances the imaging quality by eliminating crosstalk artifacts and improving the resolution.

关键词： Surface-related multiples Multiples imaging Multiples elimination

2013—2022年山东省HIV/AIDS患者死亡趋势及影响因素分析

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现代预防医学 2024年第4期51卷 589-594+612页

作者：宋怡宁李亚君孙秀彬闫钰婕路真真朱晓艳李玲王国永张娜刘云霞山东大学齐鲁医学院公共卫生学院生物统计学系山东大学健康医疗大数据研究院山东省疾病预防控制中心山东大学预防医学研究院潍坊医学院

目的了解山东省2013—2022年艾滋病病毒感染者和艾滋病病人(HIV/AIDS)的死亡趋势，并探讨相关影响因素。方法以2013—2022年现住址为山东省的25 181例HIV/AIDS患者为研究对象，收集研究对象的人口学特征、抗病毒治疗以及死亡原因等信... 详细信息

目的了解山东省2013—2022年艾滋病病毒感染者和艾滋病病人(HIV/AIDS)的死亡趋势，并探讨相关影响因素。方法以2013—2022年现住址为山东省的25 181例HIV/AIDS患者为研究对象，收集研究对象的人口学特征、抗病毒治疗以及死亡原因等信息，根据生存状况将患者分为存活、艾滋病相关死亡和非艾滋病相关死亡三组，采用Kruskal-Wallis检验、χ2检验等进行组间比较，Joinpoint回归模型进行病死率趋势变化分析，并应用无序多分类logistic回归模型对HIV/AIDS患者死亡及其影响因素进行分析。结果山东省2013—2022年共报告HIV/AIDS患者死亡病例1 187例，其中艾滋病相关死亡占34.63%,非艾滋病相关死亡占65.37%,病死率呈逐年下降趋势(APC分别为-13.58,-20.29和-9.67,均P30天、WHO临床分期为Ⅱ、Ⅲ和Ⅳ是HIV/AIDS患者发生艾滋病相关死亡的危险因素，OR(95%CI)值分别为1.74(1.41～2.16)、1.93(1.38～2.70)、2.61(1.87～3.63)和4.81(3.71～6.23);确诊到开始ART时间>30天、男性、农民和异性传播是HIV/AIDS患者发生非艾滋病相关死亡的危险因素，OR(95%CI)值分别为2.10(1.79～2.46)、1.75(1.38～2.20)、1.60(1.28～2.01)和1.75(1.48～2.08)。结论 2013—2022年山东省HIV/AIDS患者开始ART后病死率呈下降趋势，死亡年龄增加，发生非艾滋病相关死亡的病死率总体高于艾滋病相关死亡。艾滋病相关死亡和非艾滋病相关死亡的影响因素存在一定差异，应制定有针对性的干预措施。

关键词： HIV/AIDS 抗逆转录病毒治疗死亡趋势影响因素 Joinpoint回归

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非强占型优先权的M/M/N可修排队系统

系统工程与电子技术 2009年第6期31卷 1500-1505页

作者：朱翼隽鲍媛媛江苏大学理学院江苏镇江212013

研究一类带有非强占型优先权、服务台忙时与闲时故障率不同的M/M/N可修排队系统,在画出系统状态转移图的基础上,得到系统瞬态概率密度满足的微分方程组。利用拟生灭过程的方法求出系统稳态条件,并在此基础上得到系统的稳态平衡方程组。... 详细信息

研究一类带有非强占型优先权、服务台忙时与闲时故障率不同的M/M/N可修排队系统,在画出系统状态转移图的基础上,得到系统瞬态概率密度满足的微分方程组。利用拟生灭过程的方法求出系统稳态条件,并在此基础上得到系统的稳态平衡方程组。通过对稳态方程组的分析得到系统中关键的N(N+1)/2个稳态概率值的求解思路,使用Mathematica软件编程实现了稳态概率值的求取过程,并举出一个具体实例。在得到稳态概率值的基础上给出了有效服务台数的稳态分布、稳态队长的母函数这两个系统指标。

关键词：可修排队优先权稳态概率值母函数

Abdominal paracentesis drainage attenuates intestinal inflammation in rats with severe acute pancreatitis by inhibiting the HMGB1-mediated TLR4 signaling pathway

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World Journal of Gastroenterology 2021年第9期27卷 815-834页

作者： Shang-Qing Huang yi Wen Hong-Yu Sun Jie Deng Yao-Lei Zhang Qi-Lin Huang Bing Wang Zhu-Lin Luo Li-jun Tang Department of General Surgery&Pancreatic Injury and Repair Key Laboratory of Sichuan Province The General Hospital of Western Theater Command(Chengdu Military General Hospital)Chengdu 610083Sichuan ProvinceChina Basic Medical Laboratory The General Hospital of Western Theater Command(Chengdu Military General Hospital)Chengdu 610083Sichuan ProvinceChina Department of Clinical Pharmacy The General Hospital of Western Theater Command(Chengdu Military General Hospital)Chengdu 610083Sichuan ProvinceChina

BACKGROUND Our previous studies confirmed that abdominal paracentesis drainage(APD)attenuates intestinal mucosal injury in rats with severe acute pancreatitis(SAP),and improves administration of enteral nutrition in patients with acute pancreatitis(AP).However,the underlying mechanisms of the beneficial effects of APD remain poorly *** To evaluate the effect of APD on intestinal inflammation and accompanying apoptosis induced by SAP in rats,and its potential *** SAP was induced in male adult Sprague-Dawley rats by 5%sodium *** AP was induced by intraperitoneal injections of cerulein(20μg/kg body weight,six consecutive injections).Following SAP induction,a drainage tube connected to a vacuum ball was placed into the lower right abdomen of the rats to build *** changes,serum inflammatory mediators,serum and ascites high mobility group box protein 1(HMGB1),intestinal barrier function indices,apoptosis and associated proteins,and toll-like receptor 4(TLR4)signaling molecules in intestinal tissue were *** APD significantly alleviated intestinal mucosal injury induced by SAP,as demonstrated by decreased pathological scores,serum levels of D-lactate,diamine oxidase and *** reduced intestinal inflammation and accompanying apoptosis of mucosal cells,and normalized the expression of apoptosis-associated proteins in intestinal *** significantly suppressed activation of the intestinal TLR4 signaling pathway mediated by HMGB1,thus exerting protective effects against SAP-associated intestinal *** APD improved intestinal barrier function,intestinal inflammatory response and accompanying mucosal cell apoptosis in SAP *** beneficial effects are potentially due to inhibition of HMGB1-mediated TLR4 signaling.

关键词： Abdominal paracentesis drainage Severe acute pancreatitis High mobility group box 1 Toll-like receptor 4 Nuclear factor-κB

氟离子掺杂和吸附对二氧化钛光催化活性的影响

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物理化学学报 2012年第3期28卷 641-646页

作者：高岳君许宜铭浙江大学化学系杭州310027

已有文献报道,在二氧化钛的体相和表面分别掺杂和吸附氟离子,都能加快水中有机化合物的光催化降解.前者归结于表面形成的三价钛离子促进光生载流子分离,后者归结于双电层中的氟离子促进羟基自由基脱附.但是,有关它们之间的活性差异未见... 详细信息

已有文献报道,在二氧化钛的体相和表面分别掺杂和吸附氟离子,都能加快水中有机化合物的光催化降解.前者归结于表面形成的三价钛离子促进光生载流子分离,后者归结于双电层中的氟离子促进羟基自由基脱附.但是,有关它们之间的活性差异未见有文献报道.本文采用水热法,以钛酸丁酯和氟化铵为原料,合成出具有不同氟离子掺杂量的光催化剂.通过苯酚降解反应,研究氟化钠和硝酸银外部加入对这些催化剂光催化性能的影响.结果表明:无论是处于二氧化钛的体相,还是处于二氧化钛的双电层外层和内层,这些氟离子都能促进苯酚的光催化降解.但是,它们的相对活性依次降低.此外,在催化剂的水悬浮液中,同时加入硝酸银和氟化钠,能进一步加快苯酚的光催化降解,且该反应的速率远远大于单独加入氟化钠或硝酸银时的速率总和.这说明将导带电子的还原过程和价带空穴的氧化过程耦合起来,是提高二氧化钛光催化量子效率的有效途径.

关键词：光催化二氧化钛氟离子掺杂吸附