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碎石含量影响下紫色土坡面径流流速变化过程及土壤侵蚀的阶段性

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中国农业大学学报 2016年第10期21卷 102-108页

作者：韩珍王小燕李馨欣西南大学资源环境学院/三峡库区生态环境教育部重点实验室重庆400716 中国科学院水利部水土保持研究所/黄土高原土壤侵蚀与旱地农业国家重点实验室陕西杨陵712100

在室内人工模拟降雨条件下,对6种不同碎石含量(0,5%,10%,20%,30%,40%)的土壤侵蚀产流产沙的过程进行模拟研究。结果表明:碎石含量对径流流速的影响不显著,随着碎石含量的增加,平均径流流速呈减小的趋势。碎石含量对坡面侵蚀径流含沙率... 详细信息

在室内人工模拟降雨条件下,对6种不同碎石含量(0,5%,10%,20%,30%,40%)的土壤侵蚀产流产沙的过程进行模拟研究。结果表明:碎石含量对径流流速的影响不显著,随着碎石含量的增加,平均径流流速呈减小的趋势。碎石含量对坡面侵蚀径流含沙率影响显著(F=30.076,P<0.05),随着碎石含量的增加,径流含沙率呈降低的趋势。累积产沙量与降雨历时具有对数相关关系,碎石含量为5%时相关性最大,碎石含量越大累积产沙量递增速率越小。土壤中碎石混合通过改变土壤的物质组成和结构,增强土壤的抗蚀性和抗冲性,随着碎石含量的增加,土壤流失量逐渐减少,土壤侵蚀速率显著降低。

关键词：碎石平均流速径流含沙率累积产沙量侵蚀速率

温和条件下制备形貌可控的羟基磷灰石（英文）

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无机化学学报 2016年第2期32卷 289-296页

作者：肖鑫礼孔德艳张巨生哈尔滨工业大学化学系哈尔滨150001

在温和条件下采用简单的实验方法成功制备出不同结构和形貌的羟基磷灰石(HAP)纳米粒子。采用沉淀-水解两步法,以PEG和PVP为表面活性剂,在沉淀步骤制备出前驱体CaHPO_4粒子,然后在100℃、常压条件下水解获得高结晶度的HAP纳米棒。采用PE... 详细信息

在温和条件下采用简单的实验方法成功制备出不同结构和形貌的羟基磷灰石(HAP)纳米粒子。采用沉淀-水解两步法,以PEG和PVP为表面活性剂,在沉淀步骤制备出前驱体CaHPO_4粒子,然后在100℃、常压条件下水解获得高结晶度的HAP纳米棒。采用PEG制备的纳米棒形貌均匀、纵横比高;采用PVP制备的纳米棒尺寸范围较宽且尺寸较小。直接采用一步沉淀法也能够成功制备出HAP纳米粒子。采用PEG制备出麦穗状的纳米粒子;采用PVP制备出尺寸小的纳米棒和纳米粒子混合物。HAP纳米晶的结构和形貌因制备条件不同发生很大变化,故而控制其合成,有望用于生物医药领域。

关键词：沉淀水解法一步沉淀法形貌控制羟基磷灰石

腺伴随病毒载体介导Kringle5-GFP基因在眼组织中的表达

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国际眼科杂志 2012年第7期12卷 1251-1253页

作者：宋哲黎晓新北京中医药大学东方医院眼科中国北京市100078 北京大学人民医院眼科中国北京市100078

目的:探寻腺伴随病毒载体介导Kringle5基因注入玻璃体腔后,在眼球组织中的分布规律,为基因治疗视网膜病变提供实验依据。方法:将已经构建包装好的rAAV-Kringle5-GFP,滴度为2.5×1012vg/mL10μL注入SD大鼠玻璃体腔后,分别在1,5,10,20,40,... 详细信息

目的:探寻腺伴随病毒载体介导Kringle5基因注入玻璃体腔后,在眼球组织中的分布规律,为基因治疗视网膜病变提供实验依据。方法:将已经构建包装好的rAAV-Kringle5-GFP,滴度为2.5×1012vg/mL10μL注入SD大鼠玻璃体腔后,分别在1,5,10,20,40,60,90d处死SD大鼠,在荧光显微镜下观察GFP在玻璃体、视网膜、脉络膜、虹膜等眼组织分布及表达情况。根据表达强度从无表达到强表达分别记为-,+,++,+++,++++。结果:在注射后第1d,玻璃体中有轻度表达,随着时间的推移表达缓慢增强,分布较广泛;在玻璃体注射后第5d视网膜有表达,分布范围从视盘到周边部视网膜组织均出现且随着时间的推移表达增强;在虹膜、脉络膜组织表达也有较强表达;甚至在角膜内皮及晶状体组织也有表达。结论:选用腺伴随病毒载体介导目的基因能够在视网膜组织和色素膜组织有较强表达,腺伴随病毒载体介导目的基因是治疗ROP视网膜新生血管较为理想的载体。

关键词： rAAV—Kringle5-GFP 眼组织动物实验

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基于按需和贪婪转发的移动自组网路由协议

工程科学学报 2017年第5期39卷 778-785页

作者：黄金科樊晓光向新李帅空军工程大学航空航天工程学院西安710038

移动自组网的动态拓扑特性给路由协议的设计带来了一定的挑战,尤其是在高动态的网络环境中.本文针对该问题,提出了一种新的基于按需和贪婪转发的路由协议,该协议是在RGR模式的基础上提出以下三点改进,即:(1)通过受限的洪泛机制降低网络... 详细信息

移动自组网的动态拓扑特性给路由协议的设计带来了一定的挑战,尤其是在高动态的网络环境中.本文针对该问题,提出了一种新的基于按需和贪婪转发的路由协议,该协议是在RGR模式的基础上提出以下三点改进,即:(1)通过受限的洪泛机制降低网络在路由发现阶段的控制开销;(2)通过移动预测机制,在被动寻路阶段监视被动路径的状态和在GGF阶段帮助节点选取适当的邻居作为下一跳节点;(3)通过路径请求延迟机制以减少不必要的资源浪费.仿真结果表明:改进的RGR协议与现有的RGR、AODV、Modified-RGR和Optimized-RGR相比,不仅具有较高的数据包接收成功率,而且平均路由开销和端到端时延也相对较低.

关键词：移动自组织网路由协议受限洪泛移动预测路由请求延迟性能分析

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Effects of GABAB receptors in the insula on recognition memory observed with behavioural test

2012中国中西医结合学会急救医学专业委员会学术年会

作者： Zhan Hong Ruang Hui-Fen liang Yan-Bing Tang Hao Xiong Yan Jing li xin xiao-li liao xiao-xing Ma Zhong-Fu Department of Emergency the first hospital of Sun Yan-sen University

Objective:Understand the changes in the genes of oxidative stress and the process of cell toxic with myocardial IRI due to before and after operative of PCI in STEMI patients. Observe in a dynamic environment the changes in the mRNA expression of TNFSF6 and CYP1A1 resulting from myocardial IRI and clinical *** and methods:Study subjects:STEMI:Patients admitted to our ER and CCU from November 2007 to February *** of 11 patients,7 males and 4 females,mean age 61.44±13.70 years with a range from 33 to 75 *** cases are diagnosed based on the AMI diagnosis criteria under Chinese Medical Association in 1999,ST segment elevations myocardial infarction (meet the following requirements:a typical chest pain for 30 minutes,ECG chest guide league ST segment elevations≥0.2 mV or two adjacent body guided league ST segment elevations≥0.1 mV,elevated serum CK-MB more than normal,upper of two times).Exclusion standard:AMI merge following disease:old history of myocardial infarction of shock or pump failure and heart valve failure,autoimmune disease,cancer,and infectious diseases of serious kidney *** patients with normal controls with age,sex matching healthy volunteers 10 people,7 male and 3 female,the average age 53.00±6.55 (32-61).All patients were not accept antineoplastic drugs,radioactive and immunosuppressive agents,all the patients,the human immunodeficiency virus(HIV) patients or *** onset in STEMI group hospital diagnosed after extracting cubits 10ml were immediately into containing 0.05 ml of heparin without bacteria. After acute onset of emergency PCI and conventional treatment,the third day and the seventh day each pump once again were cubits 10ml;The comparison group:morning,fasting extraction method 10ml were cubits under the same approach as that for the patients group. Experiment Methods PBMCs separation adopts the lymphocyte separate liquid density gradient *** Human Stress & Toxicity

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Effects of GABAB receptors in the insula on recognition memo...

中国神经科学学会第十二届全国学术会议

作者： Nan Wu Feng Wang Zhen Zhang Xi Yang xiao-peng Zhao xin-xiao li Zhen-quan He Tao Sun Ningxia Key Laboratory of Cerebrocranial Disease Incubation Base of National Key Laboratory Ningxia Medical University Department of Neurosurgery General Hospital of Ningxia Medical University

Objective To compare the effects of intellicage and water maze test on effects of GABABR in insula on recognition memory of rats. Methods: Male Sprague-Dawley rats were randomly divided into control, sham, saline, baclofen（selective GABABR agonist） and CGP35348（GABABR antagonist） groups. Different testing procedures were employed using Intellicage and Morris water-maze test to detect changes in rat’s recognition memory. The expression of GABABR（GB1, GB2） in the insulars of rats was determined by immunofluorescence and Western Blotting at protein ***: the results of intellicage test showed that recognition of memory was impaired in position learning, punitive learning and punitive reversal learning by using baclofen and CGP 35348 compared with the control groups. In position reversal learning, there was no significant difference was found in the cognitive memory ability between the control groups with groups of CGP and baclofen. The results of Morris water-maze test showed that recognition of memory was impaired in the testing time. Data from immunofluorescence showed that GABABR（GB1, GB2） expression in the insular while the data of RT-PCR and Western blot showed that the relative expression of GB1 and GB2 was significantly increased in the baclofen group compared with the other control groups. The CGP35348 expression of GB1 and GB2 was significantly decreased. But there was no significant difference between the control groups. Conclusion（1） GABABR of insular plays an important role on the formation of recognition memory in rats.（2）Intellicage can add the lack of Morris water-maze test, and this behavioral system can provide more objective and accurate data.

关键词： GABABR insular recognition of memory intellicage water maze test

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藜麦蛋白提取工艺优化及抗氧化活性研究

现代化工 2019年第7期39卷 83-88页

作者：田格张炜雷蕾于小栋辛小丽青海师范大学化学化工学院

研究了藜麦蛋白提取的最佳工艺条件及抗氧化活性。以藜麦种子为原料,通过纤维素酶和糖化酶对其蛋白质进行复合酶解提取。以蛋白质的提取率为考察指标,在单因素试验的基础上,固定酶配比,利用响应面试验进行优化。得到最佳提取条件为:酶配... 详细信息

研究了藜麦蛋白提取的最佳工艺条件及抗氧化活性。以藜麦种子为原料,通过纤维素酶和糖化酶对其蛋白质进行复合酶解提取。以蛋白质的提取率为考察指标,在单因素试验的基础上,固定酶配比,利用响应面试验进行优化。得到最佳提取条件为:酶配比[m(纤维素酶)∶m(糖化酶)]为4∶6、酶解时间为70.59min、酶解温度为50.06℃、pH为5.03、总加酶量为427.18U/g,通过验证实验得到的蛋白质提取率为76.82%。在此条件下得到的藜麦蛋白具有清除DPPH自由基、羟自由基的能力,说明藜麦蛋白具有一定的抗氧化活性。

关键词：藜麦蛋白复合酶解响应面法抗氧化活性

Advances in Graphene‑Based Electrode for Triboelectric Nanogenerator

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Nano-Micro Letters 2025年第1期17卷 378-403页

作者： Bin Xie Yuanhui Guo Yun Chen Hao Zhang Jiawei xiao Maoxiang Hou Huilong liu li Ma xin Chen Chingping Wong State Key Laboratory of Precision Electronic Manufacturing Technology and Equipment Guangdong University of TechnologyGuangzhou 510006People’s Republic of China School of Electromechanical Engineering Guangdong University of TechnologyGuangzhou 510006People’s Republic of China School of Materials Science and Engineering Georgia Institute of TechnologyAtlantaGA 30332USA

With the continuous development of wearable electronics,wireless sensor networks and other micro-electronic devices,there is an increasingly urgent need for miniature,flexible and efficient nanopower generation *** nanogenerator(TENG)technology can convert small mechanical energy into electricity,which is expected to address this *** the core component of TENG,the choice of electrode materials significantly affects its *** metal electrode materials often suffer from problems such as durability,which limits the further application of ***,as a novel electrode material,shows excellent prospects for application in TENG owing to its unique structure and excellent electrical *** review systematically summarizes the recent research progress and application prospects of TENGs based on graphene *** precision processing methods of graphene electrodes are introduced,and the applications of graphene electrode-based TENGs in various scenarios as well as the enhancement of graphene electrodes for TENG performance are *** addition,the future development of graphene electrode-based TENGs is also prospectively discussed,aiming to promote the continuous advancement of graphene electrode-based TENGs.

关键词： Triboelectric nanogenerator Precision processing Graphene electrode Self-powered sensor

Syntheses,structures and proton-conducting properties of a new inorganic-organic hybrid material based on ε-Zn Keggin units {ε-PMo8ⅥMo4ⅤO40Zn4}

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Syntheses,structures and proton-conducting properties of a n...