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Cryogenian and Ediacaran integrative stratigraphy,biotas,and paleogeographical evolution of the Qinghai-Tibetan Plateau and its surrounding areas

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Science China Earth Sciences 2024年第4期67卷 919-949页

作者： Lang SUN malik Muhammad Saud Sajid KHAN Chuan YANG Zhixin SUN Bing PAN Shehryar AHMED Lanyun MIAO Weichen SUN Chunlin HU Xiaojuan SUN Cui LUO Bo CHEN Zongjun YIN Fangchen ZHAO Guoxiang LI Maoyan ZHU State Key Laboratory of Palaeobiology and Stratigraphy Nanjing Institute of Geology and PalaeontologyChinese Academy of SciencesNanjing 210008China College of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijing 100049China

The complex evolutionary history of the Qinghai-Tibetan Plateau and its surrounding areas,including the continental blocks(Indian,Lhasa,South Qiangtang,Tarim,Olongbuluk,Central Qilian,Alxa,North China,Yangtze,Central Iran and Oman)and the orogenic belts between them,has long been the frontier in Earth science *** Cryogenian and Ediacaran strata are extensively distributed in these ***,relatively complete Cryogenian and Ediacaran successions have been discovered in Oman,Indian,Yangtze,and Tarim blocks,while only the Ediacaran successions have been reported in Iran,the South Qiangtang,Central Qilian,Alxa,and North China *** on previous studies together with the integration of new materials and advancement obtained through the Second Tibetan Plateau Scientific Expedition and Research,this review aims to synthesize a correlative stratigraphic framework of the representative Cryogenian and Ediacaran sequences from the Qinghai-Tibetan Plateau and its surrounding ***,the Cryogenian and Ediacaran biotas and major geological events in these areas are comprehensively discussed in aspects of current research *** results indicate that,in general,Ediacaran fossils of each area exhibit distinct features in preservation and assemblage composition,but the typical late Ediacaran fossils Cloudina and Shaanxilithes have been reported from most of these *** addition to the two global Cryogenian glaciations,late Ediacaran glaciogenic deposits are extensively recorded in the areas within and around the northern QinghaiTibetan Plateau(including the North China,Alxa,Central Qilian,Olongbuluk,and Tarim blocks,and the North Qilian Accretionary Belt),as well as central and southern ***,further research is required to determine the age,distribution,and origin of these late Ediacaran glaciogenic ***,the middle Ediacaran DOUNCE/Shuram Excursion is widely documented in the Qinghai-Tibetan Plateau and its surroundi

关键词： Qinghai-Tibetan Plateau Cryogenian Ediacaran Stratigraphy Palaeogeography Biota Gondwana

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成功与安全苹果崛起;雇主重新思考网络安全

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空中英语教室（高级版．彭蒙惠英语） 2024年第7期 30-31,47,48页

作者： Yuvraj malik 不详

苹果超越三星成为全世界智能手机销量排行第一国际数据公司的一份报告指出,苹果公司终结了三星电子连续12年来作为全球最大智能手机销售商的地位,在2023年占据了20%的市场份额。根据国际数据公司的全球手机季度追踪报告的初步数据显示,... 详细信息

苹果超越三星成为全世界智能手机销量排行第一国际数据公司的一份报告指出,苹果公司终结了三星电子连续12年来作为全球最大智能手机销售商的地位,在2023年占据了20%的市场份额。根据国际数据公司的全球手机季度追踪报告的初步数据显示,同年三星的市场占有率是19.4%,其次是中国的小米、OPPO与传音。此排名变化是历经艰难的一年所产生的结果,期间因消费者面对了高通货膨胀以及经济不确定性而放缓了升级智能手机的脚步,改为选择比较平价的手机。

关键词：国际数据公司三星电子智能手机苹果公司市场占有率初步数据网络安全销售商

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Impact of ethnicity on the outcomes of acute pancreatitis: insights from US National Inpatient Sample

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胰腺病学杂志(英文) 2024年第1期7卷 86-89页

作者： Jaan Ali malik Sheza McFarland Joel E. Olson Erik T. Cryer Byron Department of Internal Medicine Rochester General Hospital Rochester NY Department of Gastroenterology Rochester General Hospital Rochester NY Department of Gastroenterology Baylor University Medical Center Dallas TX

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硅硼碳氮陶瓷前驱体聚硼硅氮烷的合成与表征

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Journal of Donghua University(English Edition) 2024年第3期41卷 257-262页

作者： malik Hamza 申键唐滋成刘勇东华大学材料科学与工程学院纤维材料改性国家重点实验室上海201620 东华大学高性能纤维及制品教育部重点实验室上海201620

以三氯化硼(BCl3)、三氯硅烷(HSiCl3)和六甲基二硅氮烷(Me6Si2NH)为原料,通过聚合物前驱体转化陶瓷(polymer-derived ceramics,PDCs)法成功合成了硅硼碳氮(SiBNC)陶瓷前驱体--聚硼硅氮烷(PBSZ)。采用傅里叶变换红外光谱、核磁共振、X射... 详细信息

以三氯化硼(BCl3)、三氯硅烷(HSiCl3)和六甲基二硅氮烷(Me6Si2NH)为原料,通过聚合物前驱体转化陶瓷(polymer-derived ceramics,PDCs)法成功合成了硅硼碳氮(SiBNC)陶瓷前驱体--聚硼硅氮烷(PBSZ)。采用傅里叶变换红外光谱、核磁共振、X射线光电子能谱、热重分析和差示扫描量热对PBSZ的结构和热性能进行分析。结果表明,PBSZ结构中存在硅氮硼(Si—N—B)网络和六元硼氮(B—N)环。在氮气中,800℃时PBSZ的陶瓷产率为53.9%。

关键词：硅硼碳氮(SiBNC)陶瓷陶瓷前驱体聚硼硅氮烷(PBSZ) 聚合物前驱体转化陶瓷(PDCs)法

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Cryogenian and Ediacaran integrative stratigraphy, biotas, and palaeogeographical evolution of the Qinghai-Tibetan Plateau and its surrounding areas

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Science China Earth Sciences 2024年

作者： Lang SUN malik Muhammad Saud Sajid KHAN Chuan YANG Zhixin SUN Bing PAN Shehryar AHMED Lanyun MIAO Weichen SUN Chunlin HU Xiaojuan SUN Cui LUO Bo CHEN Zongjun YIN Fangchen ZHAO Guoxiang LI Maoyan ZHU State Key Laboratory of Palaeobiology and Stratigraphy Nanjing Institute of Geology and PalaeontologyChinese Academy of Sciences College of Earth and Planetary Sciences University of Chinese Academy of Sciences

The complex evolutionary history of the Qinghai-Tibetan Plateau and its surrounding areas, including the continental blocks (Indian, Lhasa, South Qiangtang, Tarim, Olongbuluk, Central Qilian, Alxa, North China, Yangtze, Central Iran and Oman) and the orogenic belts between them, has long been the frontier in Earth science research. The Cryogenian and Ediacaran strata are extensively distributed in these blocks. Specifically, relatively complete Cryogenian and Ediacaran successions have been discovered in Oman, Indian, Yangtze, and Tarim blocks, while only the Ediacaran successions have been reported in Iran,the South Qiangtang, Central Qilian, Alxa, and North China blocks. Based on previous studies together with the integration of new materials and advancement obtained through the Second Tibetan Plateau Scientific Expedition and Research, this review aims to synthesize a correlative stratigraphic framework of the representative Cryogenian and Ediacaran sequences from the Qinghai-Tibetan Plateau and its surrounding areas. Furthermore, the Cryogenian and Ediacaran biotas and major geological events in these areas are comprehensively discussed in aspects of current research status. The results indicate that, in general,Ediacaran fossils of each area exhibit distinct features in preservation and assemblage composition, but the typical late Ediacaran fossils Cloudina and Shaanxilithes have been reported from most of these areas. In addition to the two global Cryogenian glaciations, late Ediacaran glaciogenic deposits are extensively recorded in the areas within and around the northern QinghaiTibetan Plateau (including the North China, Alxa, Central Qilian, Olongbuluk, and Tarim blocks, and the North Qilian Accretionary Belt), as well as central and southern Iran. However, further research is required to determine the age, distribution, and origin of these late Ediacaran glaciogenic deposits. Meanwhile, the middle Ediacaran DOUNCE/Shuram Excursion is widely documented in

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Economic and Social Impact Assessment of Chronic Diseases Among the Low-Income Population in Southern Punjab,Pakistan

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Proceedings of Anticancer Research 2024年第4期8卷 67-74页

作者： Mehran Khan Muhammad Arbab Nasir Muhammad Umar Asadullah Faiz Mirza Muhammad Abdul Bari Ayesha Saeed Fiza Nazeer Khan Saliha Mehboob malik Akashah Usama Tayyab Bahawalpur College of Pharmacy BMDC Complex63100BahawalpurPunjabPakistan

Introduction:Chronic diseases are becoming more prevalent *** effects of chronic illnesses are disastrous not only for the diagnosed person but also for their entire *** study explores chronic diseases’social and economic impact on low-income *** study aims to determine the economic and social implications of various chronic diseases and the loss of income due to these conditions among low-income individuals in Southern Punjab,***:A sample of 424 patients was selected from different areas of Southern *** were collected using a questionnaire that included questions about economic status,self-reported health status,social status,management strategies,and health insurance,among other ***:The mean monthly income of the respondents was found to be 57,097.6 Pakistani rupee(PKR),and the mean monthly expenses for treatment were 8,256.1 *** loss of income was calculated at 15%.Additionally,62%of patients spent more than 10%of their monthly income on managing their *** 85%of the respondents reported that chronic diseases affected their social ***,80%of patients lacked health ***:Chronic diseases impose significant economic and social burdens on patients and their families in Southern *** reduce the burden of chronic diseases,the government should enhance healthcare services in this region and provide health insurance to low-income families.

关键词： Chronic diseases Low-income families Economic impact Punjab Pakistan

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青藏高原及其周边寒武纪综合地层、生物群与古地理演化

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中国科学：地球科学 2024年第4期54卷 968-991页

作者：孙智新孙郎赵方臣潘兵 malik Muhammad Saud Sajid KHAN Shehryar AHMED 杨传苗兰云殷宗军李国祥朱茂炎中国科学院南京地质古生物研究所现代古生物学和地层学国家重点实验室南京210008 中国科学院大学地球与行星科学学院北京100049

青藏高原及其周边地区具有漫长且复杂的构造演化历史.印度北部、拉萨、羌塘、柴达木、中祁连等大小不同的克拉通和地块,以及位于它们之间的造山带构成了青藏高原的主体.寒武纪时期,这些克拉通和地块大多位于冈瓦纳大陆的西北缘,并以发... 详细信息

青藏高原及其周边地区具有漫长且复杂的构造演化历史.印度北部、拉萨、羌塘、柴达木、中祁连等大小不同的克拉通和地块,以及位于它们之间的造山带构成了青藏高原的主体.寒武纪时期,这些克拉通和地块大多位于冈瓦纳大陆的西北缘,并以发育与原特提斯洋有关的复杂岩浆-构造运动而与周边的阿拉伯、中伊朗、阿富汗、塔里木、阿拉善、华北、华南和滇缅马等构造单元相关联.从地层记录上看,这一时期区域内的大部分稳定陆块上发育了由陆源碎屑岩和碳酸盐岩组成的浅水陆棚沉积,其中包含面貌相近的典型浅水相三叶虫组合.而在原特提斯洋中的祁连构造带,寒武系则是一套在大洋扩张环境下形成的、以中基性火山岩和硅质岩为主的复杂地层序列,其中包含的碳酸盐岩含有斜坡相三叶虫组合.本文在广泛文献调研的基础上,结合第二次青藏高原综合科学考察中的野外观察及新获得的化石证据,对青藏高原及其周边地区不同构造单元上寒武纪地层发育的总体特征进行了概述.在此基础上,利用可获得的生物地层学和同位素年代学等资料,总结了不同构造单元上寒武纪地层的划分和年代地层对比,编制了岩石和生物地层的综合对比表.此外,从生物古地理的角度,简要讨论了寒武纪研究区内主要构造单元的古地理相关性,以及与原特提斯构造带演变有关的问题.

关键词：青藏高原寒武系地层古地理生物群冈瓦纳大陆原特提斯洋

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Novel concept of tailorable magnetic field and electron pressure distribution in a magnetic nozzle for effective space propulsion

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Propulsion and Power Research 2023年第1期12卷 59-68页

作者： Lohit malik Department of Manufacturing Processes and Automation Engineering Netaji Subhas University of Technology(formerly Netaji Subhas Institute of Technology)New DelhiIndia Department of Mechanical and Aerospace Engineering Princeton UniversityPrincetonNJ 08540United States

Magnetic nozzle appears to be a practical solution for prolonged space *** efficient handling of the spaceship,an in-flight solution to customize the thrust from the magnetic nozzle is *** a new concept of three-thick coils system is proposed for tailoring the magnetic field in-flight in accordance with electron pressure *** role of peak position of the pressure and its axial gradient is also uncovered for realizing higher *** three-fold increase in thrust is observed when the electron temperature is raised to w2.5 times of its original value at the exit *** set-up is optimized for its best performance and efficient use in the electric space propulsion sector with thrust approaching 5 *** particular,this can contribute to the attitude control or the precision pointing of the spacecraft,the technology for removal of space debris and manipulating the ion momentum flux lost to a wall or unsteady laser produced plasma flow in a magnetic nozzle.

关键词： Tailorable magnetic field Magnetic nozzle Electron pressure Thrust Effective space propulsion

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Tapered coils system for space propulsion with enhanced thrust: a concept of plasma detachment

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Propulsion and Power Research 2022年第2期11卷 171-180页

A concept for plasma detachment in a magnetic nozzle is developed based on the detachment region which is found to decrease with the taper angle of the coils employed in the proposed flexible three coil *** tapering the coils while resulting in the same crosssectional area,the plasma plume outside the throat grows radially that leads to an enhancement in the thrust from 2.67 mN to 5 mN at the final detachment plane for a rise in the taper angle from 0 to 13.The maximum thrust can reach about 9 mN when the middle coil is shifted closer to the right coil along with increasing middle-to-outer-coil diameter(inner)ratio from 1 to *** three-tapered-coils arrangement for a magnetic nozzle turns out to be a robust candidate for space propulsion offering the ability to control plasma detachment and tune thrust in-flight simply via mechanical movements without changing the current.

关键词： Tapered coil Magnetic field topology Magnetic nozzle Thrust Plasma detachment Space propulsion

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Complex Network Formation and Analysis of Online Social Media Systems

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Computer Modeling in Engineering & Sciences 2022年第3期130卷 1737-1750页

作者： Hafiz Abid Mahmood malik Faculty of Computer Studies Arab Open UniversityA’aliKingdom of Bahrain

To discover and identify the influential nodes in any complex network has been an important *** is a significant factor in order to control over the *** control on a network,any information can be spread and stopped in a short span of *** targets can be achieved,since network of information can be extended and as well ***,information spread and community formation have become one of the most crucial issues in the world of SNA(Social Network Analysis).In this work,the complex network of twitter social network has been formalized and results are *** this purpose,different network metrics have been *** of the network is provided in its original form and then filter out(different percentages)from the network to eliminate the less impacting nodes and edges for better *** network is analyzed according to different centrality measures,like edge-betweenness,betweenness centrality,closeness centrality and eigenvector *** nodes are detected and their impact is observed on the *** communities are analyzed in terms of network coverage considering theMinimum Spanning Tree,shortest path distribution and network *** is found that these are the very effective ways to find influential and central nodes from such big social networks like Facebook,Instagram,Twitter,LinkedIn,etc.

关键词： Complex network data extraction nodes and edges network visualization social media network main hubs centrality measures

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