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The Journal of China Universities of Posts and Telecommunications 2012年第4期19卷 122-128页

作者： Tariq Aziz Nasir Saleem Muhammad iqba School of Information and Communication Beijing University of Posts and Telecommunications

In this paper, we have compared the performance of joint network channel coding （JNCC） for multicast relay network using low density parity check （LDPC） codes and Convolutional codes as channel codes while exclusive or （XOR） network coding used at the intermediate relay nodes. Multicast relay transmission is a type of transmission scheme in which two fixed relay nodes contribute in the second hop of end-to-end transmission between base transceiver station （BTS） and a pair of mobile stations. We have considered one way and two way multicast scenarios to evaluate the bit error rate （BER） and throughput performance. It has been shown that when using XOR network coding at the intermediate relay nodes, the same transmission becomes possible in less time slots hence throughput performance can be improved. Moreover we have also discussed two possible scenarios in the proposed system model, in which both diversity and multiplexing gain has been considered. It is worth notifying that BER and throughput achieved for LDPC codes is better than Convolutional codes for all the schemes discussed.

关键词： cooperative relaying network coding multicast relay networks LDPC codes convolutional codes

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马来西亚的自然资源的开发战略

国外地质技术经济 1989年第1期5卷 41-43页

作者： iqba.,BA 韩红

Effects of loose deposits on debris flow processes in the Aizi Valley, southwest China

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Journal of Mountain Science 2020年第1期17卷 156-172页

作者： LIU Mei ZHANG Yong TIAN Shu-feng CHEN Ning-sheng MAHFUZR Rahman JAVED iqba Key Lab of Mountain Hazards and Surface Processes Institute of Mountain Hazards and EnvironmentChinese Academy of SciencesChengdu 610041China University of Chinese Academy of Sciences Beijing 100049China Department of Civil Engineering International University of Business Agriculture and TechnologyDhaka 1230Bangladesh Department of geology The university ofHaripurHaripur 22620Pakistan

Loose deposits, rainfall and topography are three key factors that triggering debris ***, few studies have investigated the effects of loose deposits on the whole debris flow *** June 28, 2012, a catastrophic debris flow occurred in the Aizi Valley, resulting in 40 *** Aizi Valley is located in the Lower Jinsha River,southwestern Sichuan Province, China. The Aizi Valley debris flow has been selected as a case for addressing loose deposits effects on the whole debris flow process through remote sensing, field investigation and field experiments. Remote sensing interpretation and laboratory experiments were used to obtain the distribution and characteristics of the loose deposits, respectively. A field experiment was conducted to explore the mechanics of slope debris flows, and another field investigation was conducted to obtain the processes of debris flow formation, movement and amplification. The results showed that loose deposits preparation, slope debris flow initiation,gully debris flow confluence and valley debris flow amplification were dominated by the loose *** droughts and earthquake activities may have increased the potential for loose soil sources in the Aizi Valley, which laid the foundation for debris flow formation. Slope debris flow initiated under rainfall, and the increase in the water content as well as the pore water pressure of the loose deposits were the key factors affecting slope failure. The nine gully debris flows converged in the valley, and the peak discharge was amplified 3.3 times due to a blockage and outburst caused by a large boulder. The results may help in predicting and assessing regional debris flows in dry-hot and seismic-prone areas based on loose deposits, especially considering large boulders.

关键词： Aizi Valley Loose deposits Debris flow process Slope debris flow Boulder blockage Discharge amplification

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蛋白磷酸酯酶在Alzheimer氏病tau蛋白异常磷酸化中的作用

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基础医学与临床 1999年第4期19卷 74-78页

作者：王建枝 iqba.,IG 同济医科大学病理生理教研室武汉武汉430030 美国纽约州立基础研究所化学病理实验室

用蛋白磷酸酯酸PP-2A、-2B和-1型分别处理的Alzheimer病（AD）异常磷酸化tau蛋白可不同程度恢复其促微管聚集和组装功能。PP－2A的恢复作用比PP－2B和PP－1更强．PP－2A，PP－2B和PP－1使异常tau蛋白水解释放磷酸的量分别为其总量的57％... 详细信息

用蛋白磷酸酯酸PP-2A、-2B和-1型分别处理的Alzheimer病（AD）异常磷酸化tau蛋白可不同程度恢复其促微管聚集和组装功能。PP－2A的恢复作用比PP－2B和PP－1更强．PP－2A，PP－2B和PP－1使异常tau蛋白水解释放磷酸的量分别为其总量的57％，36％和30％。tau蛋白Ser－235位的磷酸化不是决定其功能的关键位点，而Thr－231的磷酸化可能与微管组装早期的成核聚集作用有关。该研究证明：体内蛋白磷酸酯酶PP－2A，PP－2B和PP－1可能参与tau蛋白异常磷酸化过程，保持这些磷酸酯酶的活性有可能抑制AD神经原纤维退化．

关键词：蛋白磷酸酯酶去磷酸化作用 tau蛋白早老性痴呆

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阿尔茨海默病患者神经细丝蛋白的过度磷酸化和聚集

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中国病理生理杂志 2000年第10期16卷 244-244页

作者：汪义朋,王建枝,魏泽兰,夏若寒,王群,Tung YC,Grundke-iqba. I,iqba. K 同济医科大学病理生理教研室!湖北武汉430030 同济医科大学病理生理教研室!湖北武汉430030 同济医科大学病理生理教研室!湖北武汉430030 同济医科大学病理生理教研室!湖北武汉430030 同济医科大学病理生理教研室!湖北武汉430030 美国纽约州立基础研究所!纽约10314 美国纽约州立

细胞骨架蛋白tau的异常修饰在阿尔茨海默病(AD)的发病中起重要作用.神经细丝(NF)也是重要的细胞骨架,由轻(NF-L),中(NF-M)和重(NF-H)三种亚基组成.NF的正常功能是维持神经细胞的构架和轴突的口径.在AD患者,NF结构消失,被神经原纤维缠结... 详细信息

细胞骨架蛋白tau的异常修饰在阿尔茨海默病(AD)的发病中起重要作用.神经细丝(NF)也是重要的细胞骨架,由轻(NF-L),中(NF-M)和重(NF-H)三种亚基组成.NF的正常功能是维持神经细胞的构架和轴突的口径.在AD患者,NF结构消失,被神经原纤维缠结所取代,然而,关于NF在AD发病中的作用尚不清楚.本研究应用一系列特异性识别磷酸化和非磷酸化NF亚基的单克隆抗体(SMI31, SMI32,SMI33, SMI34和NR4)以及定量放免印迹技术,发现AD患者大脑灰质中NF-H和NF-M的磷酸化程度比年龄匹配的神经性舞蹈病(HD)患者显著增高;NF-L只在去垢剂抽提级分被检测,且其含量也显著高于HD对照者;此外,从AD和HD脑灰质的不同级分或用不同抗体所检测到的NF各亚基的分布及其表达特性均存在多样性.上述研究结果不但为AD发病机制提供了新资料,还为深入探讨NF在AD发病中的作用奠定了基础.

关键词：阿尔茨海默病磷酸化患者