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作者： sikandar ali 北京化工大学

学位级别：硕士

1970年代后期,出现了新型聚合物,即有机导电聚合物（OCP）,由于其独特的热,电和光学特性以及其广泛的应用,吸引了许多材料科学家,物理学家和化学家的研究人员对其进行深入研究。聚（3,4-乙撑二氧噻吩）（PEDOT）是迄今为止热,电和光学... 详细信息

1970年代后期,出现了新型聚合物,即有机导电聚合物（OCP）,由于其独特的热,电和光学特性以及其广泛的应用,吸引了许多材料科学家,物理学家和化学家的研究人员对其进行深入研究。聚（3,4-乙撑二氧噻吩）（PEDOT）是迄今为止热,电和光学稳定性最好的OCP之一。我们通过循环伏安法在取向高密度聚乙烯（HDPE）薄膜上制备高取向PEDOT薄膜。在乙腈溶液中,采用氧化铟锡涂层玻璃（IT0）电极上进行了电化学合成并用5%的HCI掺杂PEDOT。扫描电子显微镜,傅里叶红外光谱,偏光显微镜,偏振拉曼光谱和紫外光谱表明获得了各向异性的PEDOT薄膜。PEDOT薄膜表现出各向异性的导电率。垂直于HDPE膜的拉伸方向的电导率是5.2 S · cm-1,高于水平方向的0.28 S · cm-1。两个方向之间电导率的显著差异表明:外延电化学沉积是获得高性能导电聚合物的有效方法。PEDOT薄膜已显示出具有最紧凑的形态,较小的表面粗糙度。电化学研究表明,PEDOT具有较高的电容电流。这些特性使PEDOT适合用作全固态离子选择电极中的固体触点。

关键词：有机导电聚合物电化学聚合聚(3,4-乙撑二氧噻吩)(PEDOT) 取向电导率

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Detection of Babesia bovis in blood samples and its effect on the hematological and serum biochemical profile in large ruminants from Southern Punjab

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Asian Pacific Journal of Tropical Biomedicine 2012年第2期2卷 104-108页

作者： Samreen Zulfiqar Sadia Shahnawaz Muhammad ali Arif Mahmood Bhutta Shahid Iqbal sikandar Hayat Shazia Qadir Muhammad Latif Nazia Kiran ali Saeed Muhammad ali Furhan Iqbal Institute of Pure and Applied Biology.Zoology Division Bahauddin Zakariya University Faculty of Veterinary Sciences Bahauddin Zakariya University Institute of Biotechnology Bahauddin Zakariya University

Objective:To determine the presence of Babesia bovis(***) in large ruminants in southern Punjab and its effect on hematological and serum biochemical profile of host ***:Blood samples were collected from 144 large ruminants,including 105 cattle and 39 buffaloes,from six districts in southern Punjab including Multan,Layyah,Muzaffar Garh,Bhakar,Bahawalnagar and *** on the characteristics of animals and herds were collected through *** blood(hemoglobin,glucose) and serum(ALT,AST,LDH,cholesterol)parameters of calves and cattle were measured and compared between parasite positive and negative samples to demonstrate the effect of *** on the blood and serological profile of infected ***:27 out of 144 *** 5 out of 6 sampling districts,produced the541-bp fragment specific for *** of animals(P=0.02).presence of ticks on animals(P=0.04)and presence of ticks on dogs associated with herds(P=0.5) were among the major risk factors involved in the spread of bovine babesiosis in the study *** concentrations were the only serum biochemical values that significantly varied between parasite positive and negative ***:This study has reported for the first time the presence of *** in large ruminant and the results can lead to the prevention of babesiosis in the region to increase the livestock output.

关键词： Babesia bovis PCR amplification Cattle Hematology Serum biochemistry Ruminant Babesiosis Serological profile Cattle

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基于关节空时特征融合的人体行为识别

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计算机工程与设计 2020年第1期41卷 246-252页

作者：吕洁李洪奇赵艳红 sikandar ali 刘艳芳中国石油大学(北京)石油数据挖掘北京市重点实验室北京102249 中国石油大学(北京)信息科学与工程学院北京102249

针对现有人体行为识别技术存在的准确率不高和易受环境干扰等缺点,提出一种基于空时特征融合的人体行为识别方法。通过OpenPose提取人体骨骼关节的位置信息用于构造空时融合特征,该特征综合各类行为的空域和时域信息,使得特征表示更具... 详细信息

针对现有人体行为识别技术存在的准确率不高和易受环境干扰等缺点,提出一种基于空时特征融合的人体行为识别方法。通过OpenPose提取人体骨骼关节的位置信息用于构造空时融合特征,该特征综合各类行为的空域和时域信息,使得特征表示更具区分度。利用核化主成分分析算法进行特征维度缩减,利用XGBoost算法进行特征分类,获得识别结果。该方法在Multiview Action 3D数据集上进行测试,得到了94.52%的识别率,较现有的其它许多人体行为识别方法表现更好。

关键词：行为识别空时融合特征梯度树提升核化线性降维人体骨架

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Aloe vera Coating Efficiency on Shelf Life of Eggplants at Differential Storage Temperatures

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Journal of Northeast Agricultural University(English Edition) 2016年第4期23卷 15-25页

作者： sikandar Amanullah Mtthammad Muzammil Jahangir Rao Muhammad Ikram Mateen Sajid Farhat Abbas ali Inayat Mallano College of Horticulture Northeast Agricultural University Harbin 150030 China Department of Horticulture University of Agriculture Faisalabad Pakistan Department of Agronomy Muhammad Nawaz Shareef University of Agriculture Multan Pakistan Horticulture College South China Agricultural University Guangzhou 510642 China Department of Biotechnology Sindh Agriculture University Tandojam Pakistan

The core objective of instant study was to check the effectiveness of Aloe vera edible coating on postharvest life and physicochemical characteristics of eggplants under different storage temperatures. For this purpose, different formulations of Aloe vera based coating （non-poisonous） was applied at concentration of 0, 0.1%, 0.5%, and 1.0%, respectively on eggplants. The coated eggplants were stored at two different temperatures [10℃ and （30±2）℃] and examined for weight loss, firmness, stem color, shriveling, total soluble solids, pH, acidity, vitamin C, sugar （total sugar, reducing sugar and non-reducing sugar） and N, P, K, Ca and Na for two weeks. The obtained results showed that weight loss, shriveling, total soluble solids, pH, sugar （total sugar and non-reducing sugar） increased and firmness, stem color, acidity, reducing sugar, vitamin C minimized during the storage period. The 0.5% Aloe coating at 10℃ showed significant effect and delayed the changes in above parameters. Aloe vera coating remained almost ineffective in altering nutrient homeostasis （N, P, K, Ca and Na） of eggplants. The optimistic results gained in the current study could additionally investigate in larger market experiments and also could extensive to other tropical/subtropical fruits and vegetables.

关键词： eggplant Aloe vera coating storage temperature shelf life physico-chemical parameter

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Allelochemicals of garlic stimulate defense priming,modulate hormones and ameliorate stress conditions during seed germination of tomato

Allelochemicals of garlic stimulate defense priming,modulate...

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中国第九届植物化感作用学术研讨会

作者： sikandar Hayat Husain Ahmad Mubasher Nasir Muhammad ali Yongqing Ma Zhihui Cheng College of Environment and Resource Northwest A&F University Horticultural College Northwest A&F University Institute of Soil and Water Conservation Chinese Academy of Sciences and Ministry of Water Resources

Previously,aqueous garlic extracts are reported to alter the physiological responses and growth of numerous *** role in the seed germination and early seedling growth however,is less *** a series of experiments,the role of AGE and two known allelochemicals diallyl disulfide(DADS) and Allicin to stimulate the germination process and early seedling growth in tomato under control and saline conditions were *** experiments were performed to study the bioactivity of aqueous garlic extracts(AGE) and the primary garlic allelochemicals diallyl disulfide(DADS) and Allicin in seed germination and early seedling growth of tomato with and without salt *** priming,direct germination and germination under the volatile provision of these chemicals significantly influenced the germination responses and early seedling growth in a dose-dependent *** analysis revealed noticeable changes in the antioxidant machinery,soluble proteins abundance and certain phytohormones such as IAA,GA3,ABA and *** seed germination and early seedling growth indicated stimulated responses and the treated seeds successfully thrived through salt stress conditions with significantly lowered H2 O2 *** findings are among the first to report bioactivity of garlic derived compounds as seed priming to stimulate germination potential and early seedling growth of ***,the results provide understanding about the mode of action of garlic allelochemicals inside plant biological growth during early stages and may be used as the bases for advanced research *** hereby report potential of garlic allelochemicals as seed priming agents to enhance seed germination and ameliorate stress conditions during early seedling *** results thereby lay foundation for the development of garlic-based preparations to enhance seed germination and early seedling growth of tomato.

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A STUDY OF GENOTYPIC FREQUENCY OF VARIOUS BLOOD GROUP ALLELES

A STUDY OF GENOTYPIC FREQUENCY OF VARIOUS BLOOD GROUP ALLELE...

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The 1st Session of 2004 Workshop of Pakistan Academy of Sciences

作者： Mohammad Shoaib Khan Faheem Tahir Mubashir Ahmed Sheikh Fazli Subhan Birjees Mazhar Kazi Athar Saeed Dil Fariyal Deepa sikandar Sultan Irshad ali Musa Kaleem Baloch Public Health Division National Institute of HealthIslamabadPakistan Department of Clinical Pathology Jinnah Postgraduate Medical CentreKarachiPakistan Department of Chemistry Gomal UniversityD.I. KhanPakistan

A random population sample from urban and rural areas of Bannu region, Northwest Frontier Province（NWFP） of Pakistan was screened for distribution of blood groups. The objective was to identify the genotypic frequency of blood groups in the region, in order to comprehend the allelic diversity. Blood grouping was carried out over a period of 16 months from January 2002 to April 2003, and encompassed 2581 subjects, in which 57.09% were male and 42.9% female. These were categorized according to ABO/Rh system. Allele frequency was computed according to HardyWeinberg law. The distribution of phenotypes in the total sample was 0.3623, 0.3103, 0.2507 and0.0767 for groups B, A, O and AB, respectively, with 0.672 Rh-positive（R） and 0.328 Rh-negative（r）. B group was dominant in both the genders, and AB was rare in both males as well as females. The distribution of the alleles in the total sample was 0.345, 0.378 and 0.277 for I A, I B and i, *** studied population exhibited a predominance of group B, in the order of B＞A＞O＞AB, as well as Rh-positive antigen for both male（90.26%） and female（87.98%） subjects within the population,with Rh-negative men and women being 9.74% and 12.02% respectively.

关键词： Alleles gene frequency blood groups Rh factor transfusion Bannu Pakistan

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大蒜化感物质刺激番茄种子萌发过程中的防御性启动、调节激素和改善应激条件

大蒜化感物质刺激番茄种子萌发过程中的防御性启动、调节激素和改...

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中国第九届植物化感作用学术研讨会

作者： sikandar Hayat Husain Ahmad Mubasher Nasir Muhammad ali Yongqing Ma Zhihui Cheng 西北农林科技大学资源与环境学院西北农林科技大学园艺学院中国科学院水利部水土保持研究所

以前,大蒜水提取物被报道改变生理反应和生长的许多蔬菜。然而,它在种子萌发和幼苗早期生长中的作用却鲜为人知。在一系列实验中,评价了AGE和两种已知的化感物质二烯丙基二硫醚(DADS)和大蒜素在控制和生理盐水条件下刺激番茄萌发过程和...

以前,大蒜水提取物被报道改变生理反应和生长的许多蔬菜。然而,它在种子萌发和幼苗早期生长中的作用却鲜为人知。在一系列实验中,评价了AGE和两种已知的化感物质二烯丙基二硫醚(DADS)和大蒜素在控制和生理盐水条件下刺激番茄萌发过程和早期幼苗生长的作用。通过独立实验研究了大蒜水提取物(AGE)和天然大蒜化物化学物质二烯丙基二硫醚(DADS)和大蒜素在番茄种子萌发和早期幼苗生长中的生物活性,并对其进行了研究。在这些化学物质的挥发性条件下,种子萌发、直接萌发和萌发对萌发反应和早期幼苗生长有显著影响,以剂量依赖性的方式。植物分析显示,抗氧化机械、可溶性蛋白质丰度和某些植物激素(如IAA、GA3、ABA和CTK)发生了显著变化。种子萌发和幼苗早期生长表现出刺激反应,经处理的种子通过盐胁迫条件成功生长,H2O2水平显著降低。我们的研究结果是最早报告大蒜衍生化合物的生物活性作为种子启动,以刺激萌发潜力和番茄的早期幼苗生长。此外,研究结果还为了解大蒜化感物质在植物早期生物生长中的作用模式提供了依据,可作为推进研究的依据。现报告大蒜化感物质作为种子启动剂在提高种子萌发和改善幼苗生长过程中的应激条件的潜力。研究结果为大蒜基制剂的开发奠定了基础,以提高番茄种子萌发和幼苗的早期生长。

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离散型Hopfield神经网络学习算法

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计算机工程与设计 2018年第3期39卷 831-835页

作者：朱丽萍王锋辉李洪奇吕洁 sikandarali 中国石油大学(北京)石油数据挖掘北京市重点实验室北京102249 中国石油大学(北京)地球物理与信息工程学院北京102249

为使得离散型Hopfield神经网络(DHNN)具备更强的联想记忆功能,基于替换函数f(x),权值求取采用提出的学习算法。通过设计比sgn更强约束能力的函数f(x),在满足sgn函数要求的同时连续可导,由于f(x)连续可导,可根据能量最低点网络状态不再... 详细信息

为使得离散型Hopfield神经网络(DHNN)具备更强的联想记忆功能,基于替换函数f(x),权值求取采用提出的学习算法。通过设计比sgn更强约束能力的函数f(x),在满足sgn函数要求的同时连续可导,由于f(x)连续可导,可根据能量最低点网络状态不再发生变化的特性定义损失函数,用梯度下降算法来求解。使用Matlab编程验证效果,验证结果表明,该学习算法比传统的外积法、正交设计法具有更好的效果,对原始信息还原率提高了5%-11%。

关键词：离散型Hopfeld神经网络外积和法损失函数梯度下降算法联想记忆

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