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New high-resolution 2D seismic imaging of fluid escape structures in the Makran subduction zone,Arabian Sea

China Geology 2020年第2期3卷 269-282页

作者： Bin Liu Jiang-xin Chen syed Waseem haider Xi-guang Deng Li Yang Min-liang Duan Key Laboratory of Marine Mineral Resources Ministry of Natural ResourcesGuangzhou Marine Geological SurveyGuangzhou 510760China Key Laboratory of Gas Hydrate Ministry of Natural ResourcesQingdao Institute of Marine GeologyQingdao 266071China Laboratory for Marine Mineral Resources Qingdao National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266071China National Institute of Oceanography Karachi 75600Pakistan Key Laboratory of Submarine Geosciences and Prospecting Techniques MOEOcean University of ChinaQingdao 266100China

Seabed fluid escape is active in the Makran subduction zone,Arabian *** on the new highresolution 2D seismic data,acoustic blanking zones and seafloor mounds are *** blanking zones include three kinds of geometries:Bell-shaped,vertically columnar and tilted *** bellshaped blanking zone is characterized by weak and discontinuous reflections in the interior and upbending reflections on the top,interpreted as gas *** columnar blanking zone is interpreted as side-imaged gas chimneys associated with focused fluid flow and topped by a seafloor anomaly expressed as a localized reflection discontinuity,which may together serve as a vent *** acoustic blanking zone could be induced by accretionary thrust activity and rapid sedimentation surrounding *** mounds occur at the sites of bell-shaped acoustic blanking zone and may be associated with the material *** simulating refectors(BSRs)are widely distributed and exhibit a series of characteristics including diminished amplitude,low continuity as well as local shoaling overlapping with these acoustic blanking *** large amount of gases dissociated from the gas hydrates migrated upwards and then arrived at the near-seafloor sediments,followed by the formation of the gas hydrates and hence the seafloor mound.

关键词： Makran Fluid escape structure Gas hydrate Gas chimney Seafloor mound Marine geological survey engineering Pakistan Arabian Sea

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Biotechnology: A Comprehensive Training Guide for the Biotechnology Industry

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2009年

作者： haider, syed Imtiaz Ashtok, Anika

ISBN: (数字)9781420084498

ISBN: (纸本)9781420084481

All manufacturing companies face the daunting task of designing an employee training matrix that meets the gamut of national and international regulatory standards. Answering the call for a one-stop training resource that focuses exclusively on this multi-faceted, high-tech industry, Biotechnology: A Comprehensive Training Guide for the Biotechnolo

关键词： Biotechnology

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Characteristics of major and trace elements in surface sediments of the Makran Accretionary Prism, Pakistan and their implications for natural gas hydrates

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China Geology 2021年第2期4卷 299-310页

作者： Jian-ming Gong Jing Liao Yu-xi Zhang Jie Liang Jian-wen Chen Nuzhat Khan syed Waseem haider Qingdao Institute of Marine Geology China Geological SurveyQingdao 266071China Laboratory for Marine Mineral Resources Pilot National Laboratory for Marine Science and TechnologyQingdao 266071China Shandong University of Science and Technology Qingdao 266071China National Institute of Oceanography ST-47Block-1CliftonKarachi-75600Pakistan

To accurately identify the natural gas hydrates(NGH)in the sea area of the Makran Accretionary Prism,Pakistan,this paper presents the testing and analysis of major and trace elements in sediment samples taken from two stations(S2 and S3)in the area by the China Geological *** shown by testing results,all major elements are slightly different in content between the two stations except SiO2 and *** also applies to the trace elements that include Sr and Ba primarily and Cr,Ni and Zn *** can be concluded in this study that the tectonic setting of the Makran Accretionary Prism is dominated by oceanic island arc and that provenance of the Makran Accretionary Prism is dominated by felsic igneous provenance,which is at the initial weathering stage and mainly consists of *** terrigenous detritus,there are sediments possibly originating from Makran-Bela Ophiolite from the northwestern part and Murray Ridge igneous rocks from the southeastern *** V/Cr,Ni/Co,and V/(V+Ni)ratios indicate that sediments of the two stations are in an oxidation-suboxidation ***,the authors infer that the sedimentary environment of the sediments 3.0 m below the seafloor tends to be gradually transformed into a reduction environment by comparison with the Qiongdongnan Basin in the South China Sea where NGH has been *** sediments in the Makran Accretionary Prism are rich in organic matter,with total organic carbon(TOC)content greater than 1%.According to comprehensive research,the organic matter in the sediments mainly originates from marine algae and has high TOC content,which is favorable for the formation of NGH.

关键词： Characteristics of major and trace elements Natural gas hydrates Marine algae Total organic carbon Makran Accretionary Prism NGH exploration trial engineering Arabian Sea Pakistan

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超高敏感度和高响应微波湿度传感器

超高敏感度和高响应微波湿度传感器

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作者： haider syed Kashan 哈尔滨工业大学

学位级别：硕士

本文设计并制作了一款用带状纳米材料修饰的基于微波带阻滤波器的超高速、高灵敏度湿度传感器。应用所设计的交指电容,在2 GHz到12 GHz的频段内确定了两个水蒸汽敏感检测频率。优化后的双频段微带带阻滤波器获得了更高的响应和更好的品... 详细信息

本文设计并制作了一款用带状纳米材料修饰的基于微波带阻滤波器的超高速、高灵敏度湿度传感器。应用所设计的交指电容,在2 GHz到12 GHz的频段内确定了两个水蒸汽敏感检测频率。优化后的双频段微带带阻滤波器获得了更高的响应和更好的品质因数,提高了湿度传感器灵敏度。为了研究微波湿度传感器的性能,将修饰了氧化钼敏感材料的传感元件置于湿度测试腔中,在室温环境下实现了对五个湿度等级的测试。测量结果表明,插入损耗从10%RH到90%RH的湿度水平呈线性变化,其7.3 GHz和9.1 GHz双频段的灵敏度分别为0.022 dB/%RH和0.069 dB/%RH。此外,湿度传感器对两个敏感频率的检测灵敏度分别为2.06MHz/%RH和2.08 MHz/%RH。并且反应恢复时间小于5 s,湿度滞后特性小于0.25%RH。本论文还从分子极化的角度探讨了微波湿敏传感的机理。这为实现高灵敏度、快速响应的微波湿度传感器提供了一种简便易行的方法。

关键词：湿度传感器带阻滤波器微波传感

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坐骑式割草机侧翻驾驶员损伤研究

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中国农机化学报 2019年第1期40卷 91-97页

作者：杨茜王新彦张权 syed Zeeshan haider 江苏科技大学机械学院江苏镇江212000

为进一步研究坐骑式割草机翻滚保护装置(Roll-Over Protective Structures,简称为ROPS)的安全保护性能,以某坐骑式割草机为研究对象,分别建立坐骑式割草机失稳后无初速度沿15°斜坡自由翻滚的几何非线性有限元模型和多刚体有限元模型,... 详细信息

为进一步研究坐骑式割草机翻滚保护装置(Roll-Over Protective Structures,简称为ROPS)的安全保护性能,以某坐骑式割草机为研究对象,分别建立坐骑式割草机失稳后无初速度沿15°斜坡自由翻滚的几何非线性有限元模型和多刚体有限元模型,得到坐骑式割草机侧翻过程中ROPS变形和驾驶员分别在两点式安全带和三点式安全带约束系统保护下的动态响应和损伤值。以上两种有限元结合仿真的结果表明:(1)两点式安全带驾驶员与三点式安全带驾驶员在侧翻过程中均未被坐骑式割草机甩出;两点式安全带驾驶员在15°坡侧翻过程中相较于其他部位,颈部受到的伤害更大;三点式安全带由于肩带的作用,驾驶员的颈部受到很好地保护。(2)验证了ISO21299标准要求的坐骑式割草机侧翻后地面上的任何物体以及ROPS变形过程中的任何部位不侵入容身空间(Deformation Limiting Volume,简称为DLV),不能作为驾驶员安全的唯一评价标准。

关键词：割草机侧翻 MADYMO 乘员损伤

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Exploration prospects of oil and gas in the Northwestern part of the Offshore Indus Basin, Pakistan

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China Geology 2020年第4期3卷 633-642页

作者： Jian-ming Gong Jing Liao Jie Liang Bao-hua Lei Jian-wen Chen Muhammad Khalid syed Waseem haider Ming Meng Qingdao Institute of Marine Geology China Geological SurveyQingdao 266071China Laboratory for Marine Mineral Resources Pilot National Laboratory for Marine Science and TechnologyQingdao 266061China College of Earth Science and Engineering Shandong University of Science and TechnologyQingdao 266590China Pakistan Hydrographic Department 11 Liaquat Barracks Shahrae Faisal KARACHI-75530Pakistan National Institute of Oceanography St-47Block-1CliftonKarachiPakistan School of Ocean Sciences China University of Geosciences(Beijing)Beijing 100083China

Oil and gas resources are short in Pakistan and no commercially viable oil and gas sources have been yet discovered in its offshore areas up to *** this study,the onshore-offshore stratigraphic correlation and seismic data interpretation were conducted to determine the oil and gas resource potential in the Offshore Indus Basin,*** on the comprehensive analysis of the results and previous data,it is considered that the Cretaceous may widely exist and three sets of source rocks may be developed in the Offshore Indus *** presence of Miocene mudstones has been proven by drilling to be high-quality source rocks,while the Cretaceous and Paleocene–Eocene mudstones are potential source ***-lithologic traps are developed in the northwestern part of the basin affected by the strike-slip faults along Murray ***,the Cretaceous and Paleocene–Eocene source rocks are thick and are slightly affected by volcanic ***,it can be inferred that the northwestern part of Offshore Indus Basin enjoys good prospects of oil and gas resources.

关键词： Oil and gas Cretaceous Offshore Indus Basin Oil storage structure Oil and gas engineering Pakistan

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Copper-based oxygen carriers supported with alumina/lime for the chemical looping conversion of gaseous fuels

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Journal of Energy Chemistry 2017年第5期26卷 891-901页

作者： syed K haider María Erans Felix Donat Lunbo Duan Stuart A Scott Vasilije Manovic Edward J Anthony Combustion and CCS Centre Cranfield UniversityBedfordshire MK43 0ALUK Key Laboratory of Energy Thermal Conversion and Control Ministry of EducationSchool of Energy and EnvironmentSoutheast UniversityNanjing 210096JiangsuChina Department of Engineering University of CambridgeTrumpington StreetCambridgeUK

Copper（Ⅱ） oxide in varying ratios was combined with either an alumina-based cement（Al300）, or CaO derived from limestone as support material in a mechanical pelletiser. This production method was used to investigate its influence on possible mechanical and chemical improvements for oxygen carriers in chemical looping processes. These materials were tested in a lab-scale fluidised bed with CO or CH;as a reducing gas at 950 °C. As expected, the oxygen carriers containing a greater ratio of support material exhibited an enhanced crushing strength. Oxygen carriers comprised of a 1:3 ratio of support material to active CuO exhibited increased crushing strength by a minimum of 280% compared to pure CuO *** oxygen carriers exhibited a high CO conversion yield and were fully reducible from CuO to Cu. For the initial redox cycle, Al300-supported oxygen carriers showed the highest fuel and oxygen carrier conversion. The general trend observed was a decline in conversion with an increasing number of redox *** the case of CaO-supported oxygen carriers, all but one of the oxygen carriers suffered *** agglomeration was more severe in carriers with higher ratios of CuO. Oxygen carrier Cu25Al75（75 wt% aluminate cement and 25 wt% CuO）, which did not suffer from agglomeration, showed the highest attrition with a loss of approximately 8% of its initial mass over 25 redox cycles. The reducibility of the oxygen carriers was limited with CH;in comparison to CO. CH;conversion were 15%-25% and 50% for Cu25Ca75（25 wt% CuO and 75 wt% CaO） and Cu25Al75, respectively. Cu25Ca75 demonstrated improved conversion, whereas Cu25Al75 exhibited a trending decrease in conversion with increasing redox cycles.

关键词： Chemical-looping Oxygen carrier Copper Carbon capture

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Property-performance relationship of core-shell structured black TiO_(2) photocatalyst for environmental remediation

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Frontiers of Environmental Science & Engineering 2023年第9期17卷 177-195页

作者： Sajjad haider Rab nawaz Muzammil Anjum Tahir Haneef Vipin Kumar Oad Salah Uddinkhan Rawaiz Khan Muhammad Aqif Chemical Engineering Department College of EngineeringKing Saud UniversityRiyadh 11421Saudi Arabia Department of Environmental Sciences Institute of Soil and Environmental SciencesPir Mehr Ali Shah Arid Agriculture University ShamsabadRawalpindi 46300Pakistan Centre of Innovative Nanostructures and Nanodevices(COINN) Institute of Autonomous SystemUniversiti Teknologi PETRONASBandar Seri Iskandar 32610Malaysia Civil and Environmental Engineering Department The University of Alabama in HuntsvilleHuntsvilleAL 35899USA Faculty of Civil and Environmental Engineering Gdansk University of TechnologyGdansk 80-233Poland College of Engineering King Saud UniversityRiyadh 11421Saudi Arabia Restorative Dental Sciences Department College of DentistryKing Saud UniversityRiyadh 11545Saudi Arabia Faculty of Materials and Chemical Engineering Department of Chemical EngineeringGhulam Ishaq Khan InstituteKhyber Pakhtunkhwa Topi 23460Pakistan

Understanding the relationship between the properties and performance of black titanium dioxide with core-shell structure(CSBT)for environmental remediation is crucial for improving its prospects in practical *** this study,CSBT was synthesized using a glycerol-assisted sol-gel *** effect of different water-to-glycerol ratios(W:G=1:0,9:1,2:1,and 1:1)on the semiconducting and physicochemical properties of CSBT was *** effectiveness of CSBT in removing phenolic compounds(PHCs)from real agro-industrial wastewater was *** CSBT synthesized with a W:G ratio of 9:1 has optimized properties for enhanced removal of *** has a distinct coreshell structure and an appropriate amount of Ti3+cations(11.18%),which play a crucial role in enhancing the performance of *** exposed to visible light,the CSBT performed better:48.30%of PHCs were removed after 180 min,compared to only 21.95%for TiO_(2) without core-shell *** CSBT consumed only 45.5235 kWh/m^(3) of electrical energy per order of magnitude and cost$2.4127 per unit volume of treated agro-industrial *** the conditions tested,the CSBT demonstrated exceptional stability and *** CSBT showed promising results in the treatment of phenols-containing agro-industrial wastewater.

关键词： Black TiO_(2) Core-shell structure Property-performance relationship Agro-industrial effluent Environmental remediation

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Molecular detection of Leishmania species in human and animals from cutaneous leishmaniasis endemic areas of Waziristan, Khyber Pakhtunkhwa, Pakistan

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Asian Pacific Journal of Tropical Medicine 2018年第8期11卷 495-500页

作者： Mubashir Hussain Shahzad Munir Abdullah Jalal Taj Ali Khan Niaz Muhammad Bahar Ullah Khattak Abdullah Khan Irfan Ahmed Zulqarnain Baloch nawaz haider Bashir Muhammad Ameen Jamal Kashif Rahim Humaira Mazhar Maira Riaz Noha Watany Vector Borne Diseases Lab Department of Microbiology Kohat University of Science and Technology Kohat Faculty of Plant Protection Yunnan Agricultural University Institute of Biotechnology and Genetic Engineering The University of AgriculturePeshawar Pakistan Yunnan Provincial Key Laboratory of Animal Nutrition and Feed Yunnan Agricultural University College of Veterinary Medicine South China Agricultural University Department of Animal Breeding Genetics and Reproduction Yunnan Agricultural University Beijing Key Laboratory of Genetic Engineering Drug and Biotechnology Institute of Biochemistry and Biotechnology College of Life Sciences Beijing Normal University Vector Biology Research Lab US Naval Medical Research Unit 3

Objectives: To detect Leishmania species in human patients, animal reservoirs and Phlebotomus sandflies in Waziristan, Pakistan. Methods: Tissue smears and aspirates from 448 cutaneous leishmaniasis(CL) suspected patients were analyzed. To sort out role of the reservoir hosts, skin scrapings, spleen and liver samples from 104 rodents were collected. Furthermore, buffy coat samples were obtained from 60 domestic animals. Sandflies were also trapped. All human, animals and sandfly samples were tested by microscopy, kinetoplastic PCR and internal transcribed spacer 1(ITS1) PCR followed by restriction fragment length polymorphism for detection of Leishmania species. Results: An overall prevalence of 3.83% and 5.21% through microscopy and ITS1 PCR respectively was found. However, the statistically non-significant correlation was found between area, gender, and number of lesions. The presence of rodents, sandflies, domestic animals and internally displaced people increased the risk of CL. Using ITS1-PCR-RFLP, Leishmania tropica(L. tropica) was confirmed in 106 samples while 25 of the isolates were diagnosed as Leishmania major(L. major). Similarly, 3/104 rodents were positive for L. major and 14 pools of DNA samples containing Phlebotomus sergenti sandflies were positive for L. tropica. None of samples from domestic animals were positive for leishmaniasis. Conclusions: In the present study, L. tropica and L. major are found to be the main causative agents of CL in study area. Movement of internally displaced people from CL endemic areas presents a risk for nearby CL free areas. To the best of our knowledge, we report for the first time L. major infection in rodents(Rattus rattus) and L. tropica in Phlebotomus sergenti sandflies trapped in Waziristan, Pakistan.

关键词： Leishmania major Rodents Cutaneous leishmaniasis Domestic animals ITS 1 PCR Waziristan

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Implementation of Variable Tone Variable Bits Gray-Scale Image Stegnography Using Discrete Cosine Transform

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Journal of Signal and Information Processing 2013年第4期4卷 343-350页

作者： Sahib Khan Muhammad nawaz Khan Somia Iqbal syed Yaqoob Shah Nasir Ahmad Department of Electrical Engineering University of Engineering & Technology Peshawar Pakistan

Secure exchange of information is the basic need of modern digital world of e-communication which is achieved either by encrypting information or by hiding information in other information called cover media. Concealing information requires a well designed technique of Stegnography. This work presents a technique, variable tone variable bits (VTVB) Stegnography, to hide information in a cover image. The VTVB Stegnography hides variable data in discrete cosine transform (DCT) coefficients of the cover image. VTVB Stegnography provides variable data hiding capacity and variable distortion. Additional large data hiding this technique provide extra security due to the large key size making VTVB Stegnography technique much more immune to steganalysis. The hiding makes the existence of information imperceptible for steganalysis and the key of keeping a secret makes the recovering of information difficult for an intruder. The key size is depending on cover image and numbers of bits of discrete cosine transform (DCT) coefficients used for information embedding. This is a very flexible technique and can be used for low payload applications, e.g. watermarking to high payload applications, e.g. network Stegnography.

关键词： Information Security Image Processing Stegnography Steganalysis Discrete Cosine Transform (DCT)

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