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Characteristics of recent temperate glacier fluctuations in the Parlung Zangbo River basin,southeast Tibetan Plateau

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Chinese Science Bulletin 2010年第20期55卷 2097-2102页

作者： YANG Wei YAO TanDong XU BaiQing ma linglong WANG ZhiHui WAN Ming Key Laboratory of Tibetan Environment Changes and Land Surface Processes Institute of Tibetan Plateau Research Chinese Academy of Sciences Beijing 100085 China State Key Laboratory of Cryosphere Chinese Academy of Sciences Lanzhou 730000 China Beibei Meteorological Bureau Chongqing 400700 China

Little is known about recent variation of temperate glaciers on the Tibetan Plateau,although they are of particular theoretical and practical interests in terms of climate change and water *** study of glacier mass balance and terminus variation for six temperate glaciers in the Parlung Zangbo River basin,southeast Tibetan Plateau,shows the facts of the overall negative mass balance and the continued terminus retreat from 2005/2006 to 2007/*** mass balances of smaller glaciers were more negative compared to larger *** the trend of glacier mass balance in the Hengduan Mountains,the Himalayas and glacier shrinkage in southeast Tibetan Plateau,the mass loss and recession of temperate glacier in this region are expected if the current climate condition continues.

关键词：青藏高原东南部冰川波动流域冰川物质平衡特征喜马拉雅山脉水资源供应西藏高原

Quick ice mass loss and abrupt retreat of the maritime glaciers in the Kangri Karpo Mountains, southeast Tibetan Plateau

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Chinese Science Bulletin 2008年第16期53卷 2547-2551页

作者： YANG Wei YAO TanDong XU BaiQing WU GuangJian ma linglong XIN XiaoDong Institute of Tibetan Plateau Research Chinese Academy of Sciences Beijing 100085 China National Key Laboratory of Cryospheric Science Chinese Academy of Sciences Lanzhou 730000 China Graduate University of the Chinese Academy of Sciences Beijing 100049 China

The maritime glaciers are sensitive to climate change because of high annual precipitation and high air temperature in the region. A combined comprehensive study was carried out based on glacier mass balance observation, GPS-based glacier terminus position survey, glacier Ground Penetrating Radar, topography maps and RS satellite images in the Kangri Karpo Mountains, Southeast Tibet. The study revealed a strong ice mass loss and quick glacier retreat since the 1970s. Ata Glacier, one glacier from the south slope of the Kangri Karpo Mountains, has formed a 6-km-long terminal moraine zone at the end of the glacier since the 1970s, and the accelerating retreat is largely due to the strong glacier sur- face melting. mass balance study on the other four glaciers on the northern side of the Kangri Karpo Mountains shows that they are in large negative mass balance and the glaciers had retreated 15―19 m from may 2006 to may 2007. The in-situ glacier observation also shows that the glacier retreat is more obvious in small glaciers. The enhanced ice mass deficit caused by climate warming and the ongoing extinction of many small glaciers in this region could seriously affect the water resources, environ- ments, local climate and regional sustainable development in the near future.

关键词：西藏高原海上冰川山脉气候变化

Seasonal variations of stable isotope in precipitation and moisture transport at Yushu,eastern Tibetan Plateau

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Science China Earth Sciences 2008年第8期51卷 1121-1128页

作者： TIAN LiDe ma linglong YU WuSheng LIU ZhongFang YIN ChangLiang ZHAO ZhongPing TANG Wei WANG Yu Laboratory of Tibetan Environment Changes and Land Surface Processes Institute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100085China State Key Laboratory of Cryosphere Sciences Chinese Academy of SciencesLanzhou 730000China

Precipitation δ 18O at Yushu, eastern Tibetan Plateau, shows strong fluctuation and lack of clear seasonality. The seasonal pattern of precipitation stable isotope at Yushu is apparently different from either that of the southwest monsoon region to the south or that of the inland region to the north. This different seasonal pattern probably reflects the shift of different moisture sources. In this paper, we present the spatial comparison of the seasonal patterns of precipitation δ 18O, and calculate the moisture transport flux by using the NCAR/NCEP reanalysis data. This allows us to discuss the relation between moisture transport flux and precipitation δ 18O. This study shows that both the southwest monsoon from south and inland air mass transport from north affected the seasonal precipitation δ 18O at Yushu, eastern Tibetan Plateau. Southwest monsoon brings the main part of the moisture, but southwest transport flux is weaker than in the southern part of the Tibetan Plateau. However, contribution of the inland moisture from north or local evaporation moisture is enhanced. The combined effect is the strong fluctuation of summer precipitation δ 18O at Yushu and comparatively poor seasonality.

关键词： Tibetan Plateau Yushu precipitation stable isotope moisture transport

HARDY基因的克隆、原核表达及其植物表达载体的构建

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麦类作物学报 2014年第3期34卷 292-297页

作者：马玲珑林国梁赖勇马小乐孟亚雄李葆春王化俊甘肃省作物遗传改良与种质创新重点实验室/甘肃省干旱生境作物学重点实验室甘肃兰州730070 甘肃农业大学农学院甘肃兰州730070 甘肃农业大学生命科学技术学院甘肃兰州730070

为了给转HARDY(HRD)基因小麦研究奠定基础,利用PCR技术从拟南芥中克隆HRD基因,进行生物信息学分析,预测其编码的蛋白质结构与功能,构建原核表达载体pET28a(+)-HRD,转化大肠杆菌BL21(DE3),IPTG诱导蛋白的表达,同时构建pBin-HRD植物表达... 详细信息

为了给转HARDY(HRD)基因小麦研究奠定基础,利用PCR技术从拟南芥中克隆HRD基因,进行生物信息学分析,预测其编码的蛋白质结构与功能,构建原核表达载体pET28a(+)-HRD,转化大肠杆菌BL21(DE3),IPTG诱导蛋白的表达,同时构建pBin-HRD植物表达载体。测序分析结果表明,克隆的HRD与NCBI发布的拟南芥核苷酸序列的同源性为99%,其开放阅读框长555bp,可编码184个氨基酸,具有许多重要功能位点;成功构建了原核表达载体pET28a(+)-HRD和植物表达载体pBin-HRD,诱导表达出大小约为23.3kD的蛋白,与理论值相近。

关键词： HARDY(HRD) 基因克隆原核表达植物表达载体 HARDY(HRD)

山奈酚-3’,8-二磺酸钠及其铜(Ⅱ)配合物的制备与抗氧化活性研究

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食品科技 2020年第4期45卷 206-212页

作者：马玲龙熊亚红付银莲陈实乐学义华南农业大学应用化学系广东广州510642 华南农业大学应用数学系广东广州510642

黄酮类化合物是一类具有广泛生物活性的植物次生代谢产物,具有潜在的应用前景。然而,因大多数黄酮存在水溶性差、透水性差而导致生物利用率低,限制了其应用。文章以常见的黄酮类化合物山奈酚为原料,制备了新型具有良好水溶性的山奈酚磺... 详细信息

黄酮类化合物是一类具有广泛生物活性的植物次生代谢产物,具有潜在的应用前景。然而,因大多数黄酮存在水溶性差、透水性差而导致生物利用率低,限制了其应用。文章以常见的黄酮类化合物山奈酚为原料,制备了新型具有良好水溶性的山奈酚磺基衍生物(山奈酚-3’,8-二磺酸钠)及其铜(Ⅱ)配合物。采用核磁共振氢谱和电喷雾质谱确定了山奈酚-3’,8-二磺酸钠分子结构,用元素分析、红外光谱、紫外可见光谱以及热重分析等方法对配合物进行了表征,揭示配合物的配位比为1:1,且具有变形五配位结构。同时,着重研究了山奈酚-3’,8-二磺酸钠及其铜(Ⅱ)配合物对DPPH自由基、羟基自由基、超氧阴离子自由基和脂质过氧化的抑制作用。结果表明,主题铜(Ⅱ)配合物较山奈酚-铜配合物具有更优良的抗氧化活性。

关键词：山奈酚磺化衍生物铜(Ⅱ)配合物抗氧化活性

SDN可编程数据面中的DDoS攻击检测研究

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内蒙古科技大学学报 2021年第4期40卷 388-394页

作者：童永娟顾瑞春马玲珑内蒙古科技大学信息工程学院内蒙古包头014010

软件定义网络(Software Defined Networking,SDN)是一种新型的网络架构,SDN将数据面与控制面分离,从而实现网络的集中控制.但当SDN控制器在受到诸如分布式拒绝服务(Distributed Denial of Service,DDoS)之类的恶意攻击时,将成为整个网... 详细信息

软件定义网络(Software Defined Networking,SDN)是一种新型的网络架构,SDN将数据面与控制面分离,从而实现网络的集中控制.但当SDN控制器在受到诸如分布式拒绝服务(Distributed Denial of Service,DDoS)之类的恶意攻击时,将成为整个网络的关键故障点.为此,文章在SDN数据面中对网络异常流量监控进行了探索,通过P4(Programming Protocol-Independent Packet Processors)语言在数据面实现了基于信息熵的DDoS攻击检测原型.

关键词： SDN 数据面 P4 信息熵 DDoS攻击检测

芹菜素-铜(Ⅱ)配合物研制及其清除自由基活性

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食品科技 2019年第6期44卷 275-281页

作者：马玲龙李小爽陆仲坤朱丽陈实付银莲乐学义华南农业大学应用化学系

黄酮类化合物是一类天然的抗氧化剂,有着广泛的药理活性,但大部分黄酮的生物活性与生物利用率都比较低,而大量的研究发现黄酮类金属配合物能提升黄酮稳定性、水溶性及清除自由基能力。实验在乙醇-水混合溶剂中合成了芹菜素-铜(Ⅱ)配合物... 详细信息

黄酮类化合物是一类天然的抗氧化剂,有着广泛的药理活性,但大部分黄酮的生物活性与生物利用率都比较低,而大量的研究发现黄酮类金属配合物能提升黄酮稳定性、水溶性及清除自由基能力。实验在乙醇-水混合溶剂中合成了芹菜素-铜(Ⅱ)配合物[Cu(AP)2(H2O)]·H2O(AP=芹菜素阴离子),采用元素分析、红外光谱、紫外可见光谱、热重分析、电导率测定、铜(Ⅱ)滴定等方法确定其组成及结构,推断出芹菜素与铜(Ⅱ)的配位点为4-羰基及5-羟基,配位比为2:1,配合物分子为一变形的四方锥结构。同时着重分别通过NBT光照还原、Fenton反应和抗脂质过氧化方法研究了该配合物对超氧阴离子自由基、羟基自由基及过氧自由基的清除作用。结果表明,相对于芹菜素,配合物具有较强的清除自由基能力。

关键词：芹菜素铜配合物抗氧化活性

Research Progress on Photocatalytic/Photoelectrocatalytic Oxidation of Nitrogen Oxides

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Transactions of Tianjin University 2021年第4期27卷 295-312页

作者： Shuangjun Li linglong Chen Zhong ma Guisheng Li Dieqing Zhang Key Laboratory of Resource Chemistry of Ministry of Education Shanghai Key Laboratory of Rare Earth Functional MaterialsJoint International Research Laboratory of Resource ChemistryMinistry of EducationShanghai Normal UniversityShanghai 200234China School of Environmental and Geographical Sciences Wetland Ecosystem Observation and Research Field StationShanghai Normal UniversityShanghai 200234China

The emission of nitrogen oxides(NO_(x))increases year by year,causing serious problems to our *** photocatalytic oxidation of NO_(x)has attracted more attention recently because of its effi cient removal of NO_(x),especially for low concentra-tions of NO_(x).In this review,the mechanism of the photocatalytic oxidation of NO_(x)is ***,the recent progress on the development of photocatalysts is reviewed according to the categories of inorganic semiconductors,bismuth-based compounds,nitrogen carbide polymer,and metal organic frameworks(MOFs).In addition,the photoelectrocatalytic oxida-tion of NO_(x),a method involving the application of an external voltage on the photocatalytic system to further increase the removal effi ciency of NO_(x),and its progress are ***,we outline the remaining challenges and provide our perspectives on the future directions for the photocatalytic oxidation of NO_(x).

关键词： NO_(x) Photocatalytic Photoelectrocatalytic Mechanism ·Photocatalyst

2D organic semiconductors, the future of green nanotechnology

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Nano materials Science 2019年第4期1卷 246-259页

作者： Guru Prakash Neupane Wendi ma Tanju Yildirim Yilin Tang linglong Zhang Yuerui Lu Research School of Electrical Energy and Materials EngineeringCollege of Engineering and Computer ScienceThe Australian National UniversityCanberraACT2601Australia College of Chemistry and Environmental Engineering Shenzhen UniversityShenzhen518052GuangdongChina

The discovery of 2D organic semiconductors of atomically thin structures has attracted great attention due to their emerging optical, electronic, optoelectronic and mechatronic properties. Recent progress in such organic nanostructures has opened new opportunities for engineering material properties in many ways, such as, 0D/1D/2D nanoparticles hybridization, strain engineering, atomic doping etc. Moreover, 2D organic nanostructures exhibit a unique feature of bio–functionality and are highly sensitive to bio-analytes. Such peculiar behavior in 2D organics can be utilized to design highly-efficient bio-sensors. Also, a bio-molecular integrated electronic/optoelectronic device with enhanced performance can be attained. Furthermore, the bio-degradable, biocompatible, biometabolizable, non-toxic behaviour and natural origin of organic nanomaterials can address the current ecological concerns of increasing inorganic material based electronic waste. This review highlights the benefits of 2D organic semiconductors. Considering the importance of strategic techniques for growing thin 2D organic layers,this review summarizes progress towards this direction. The possible challenges for long-time stability and future research directions in 2D organic nano electronics/optoelectronics are also discussed. We believe that this review article provides immense research interests in organic 2D nanotechnology for exploiting green technologies in the future.

关键词： 2D organic semiconductor Green nanotechnology OTFTs OLEDs Photo-diodes Organic solar cell Optical wave guide