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辽东半岛复州湾剖面寒武系第二统光合作用生物膜建造的核形石

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古地理学报 2019年第1期21卷 31-48页

作者：梅冥相 Muhammad riaz 刘丽孟庆芬中国地质大学(北京)地球科学与资源学院北京100083 中国地质大学(北京)生物地质与环境地质国家重点实验室北京100083

作为一种经常大于鲕粒的包覆颗粒类型,核形石以其不平滑的圈层被解释为微生物成因,区别于成因存在较大争议的鲕粒,而且常与鲕粒和其他类型的碳酸盐颗粒相互共生;作为一种在围绕着生物碎屑和非生物碎屑核心的序列式纹层化作用过程中形成... 详细信息

作为一种经常大于鲕粒的包覆颗粒类型,核形石以其不平滑的圈层被解释为微生物成因,区别于成因存在较大争议的鲕粒,而且常与鲕粒和其他类型的碳酸盐颗粒相互共生;作为一种在围绕着生物碎屑和非生物碎屑核心的序列式纹层化作用过程中形成的球形或假球型生物沉积构造,核形石还常常单独产出和分布,所以又被解释为微生物碳酸盐岩,或者被归为球状叠层石。在辽东半岛寒武系第二统碱厂组和馒头组之中,厘米级别大小的核形石密集发育在三级层序的顶部,成为一种时间特化的相。另外,以下重要特征将辽东半岛寒武系第二统的核形石特征化,包括:(1)与凝块和微凝块共生;(2)多为球状和椭球状;(3)由不均一的非纹层状致密泥晶和微亮晶构成;(4)核形石皮层以及核形石间凝块中发育特别的蓝细菌鞘钙化化石等。尽管穿越成岩作用过滤器去解释古代核形石复杂的形成机理存在着巨大的挑战,也尽管形成这些核形石的复杂生物膜钙化作用细节需要更加深入地研究才能得到更好地了解,但是,辽东半岛第二统碱厂组和馒头组核形石中直接的微生物化石证据,尤其是核形石内较为丰富的钙化蓝细菌鞘化石,使其成为一个了解光合作用生物膜建造核形石的典型实例。

关键词：核形石光合作用生物膜寒武系第二统复州湾剖面辽东半岛

VMR:Virtual Machine Replacement Algorithm for QoS and Energy Efficiency in Cloud Data Centers

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VMR:Virtual Machine Replacement Algorithm for QoS and Energy...

作者： riaz ALI 上海交通大学

学位级别：硕士

The Cloud computing paradigm facilitates customers to have on demand access to cloud *** leads to a large amount of physical machines and data centers in order to satisfy the requirements of customers,which are constantly on the *** progress in the quantity of running physical machines is directly proportionate to the rise in the energy ***,saving of energy utilization has become one of the foremost challenges of Cloud data *** minimize the energy consumption,a new technique with an adaptive threshold virtual machine replacement（VMR）algorithm that decreases the number of active physical machines in the Cloud data center was *** scheme is being broadly applied across Information Technology infrastructure owing to its many benefits such as efficient resource utilization,ease of management,minimized energy *** machine is the basic unit of scheduling for saving energy consumption in Cloud data *** replacement algorithm expands the performance of the whole system by efficiently balancing the load through physical *** is an important feature for Cloud computing data centers that has recently attracted considerable *** consumption is not measured in most of the migration *** our thesis,we design a novel energy efficient approach that aims to minimize the energy consumption without reducing the Quality of Service（QoS）for users deadline requirements in Cloud data *** also propose a VM replacement algorithm for QoS and energyawareness in cloud data *** experimentally match the performance of our algorithm with other advanced algorithms（i.e.,the random algorithm and the first-fit algorithm）.The experimental results illustrate that our solution improves first fit and random algorithms by twice and four times respectively,and is also energy efficient with reliable QoS while ensuring high level of Service Level Agreement（SLA）.

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Overexpression of inhibinα(1-32)fusion protein promotes apoptosis and cell cycle arrest in a cervical cancer cell model(Hela cells)

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BIOCELL 2014年第1期38卷 17-24页

作者： Yanhong ZHEN Li HAN Kailai CAI Lijun HUO Hasan riaz Canjie WU Aixin LIANG Lei SANG Liguo YANG Key laboratory of Agricultural Animal Genetics Breeding and Reproduction of Ministry of Education.Huazhong Agricultural UniversityWuhan430070HubeiChina College of Animal Science and Veterinary Medicine Huazhong Agricultural UniversityWuhanHubei 430070China

Inhibins play important roles in the reproductive system. To evaluate whether inhibin α (1-32) fusion protein plays a role in cervical cancer growth, the plasmid pVAX-inhα was constructed and its effect on proliferation and apoptosis of the human cervical cancer cell line (Hela) was checked by flow cytometry and real-time PCR. The expression and localization of inhibin α protein were detected by RT-PCR and confocal mi- croscopy which showed that inhibin α protein was expressed and localized in the nucleus of Hela cells. Over ex- pression of inhibin α gene significantly induced cell apoptosis and ceased S phase of cell cycle. Furthermore, cell proliferation was significantly suppressed 96 h post-transfection and mRNA level of anti-apoptosis genes (Bcl-2, NFκB) were decreased but pro-apoptosis genes (Bax, wild type p53) and inhibin co receptor (TGFβR3) were increased, indicating that inhibin, through its co-receptor, might activate apoptotic and cell growth cascades which regulate proliferation and apoptosis in Hela cells. These results suggest that inhibin α (1-32) fusion pro- tein, located in the cell nucleus, can regulate Hela cells growth and apoptosis by induction of apoptotic pathways such as NFκB, Bcl-2 and p53 families. These findings may have a significant impact on future research regarding cervical cancer cell lines.

关键词： inhibinα(1-32) Hela cells proliferation apoptosis overexpression

A Spectral Characterization of the S-clique Extension of the Square Grid Graphs

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A Spectral Characterization of the S-clique Extension of the...

作者： Muhammad riaz 中国科学技术大学

学位级别：硕士

This thesis focuses simultaneously on two problems in spectral graph theory,known as spectral characterization of graphs and characterization of distance regular graphs from their intersection *** particular,we show that any co-edge-regular graph which is cospectral with the s-clique extension of the t × t-grid is the s-clique extension of the t × t-grid,if t ≥ 11（S + 1）3（s + 2）,（s ≥ 2）.Gavrilyuk and Koolen used a weaker version of this result to show that the Grassmann graph Jq（2D,D）is determined by its intersection array as a distance-regular graph,if D＞20 and if q ≥ 9,then D＞*** thesis consist on four chapters and are organized as follows:In Chapter 1,we discuss the origin and motivation of our *** results are provided to understand its *** 2 focuses on defining all the necessary termi-nologies and *** important concepts such as interlacing,equitable partitions,clique extension of square grid graphs are *** upper bound on the order of a clique in a graph cospectral with the s-clique extension of the square grid graphs,say（?）,is *** Chapter 3,we present the proof of our *** 4 comprises conclusion and future work.

关键词： Co-edge-regular graph Eigenvalue Few eigenvalues Spectral characterization

One-pot Synthesis,Characterization and Crystal Structure Determination of Novel 1,4,5-Trisubstituted 1,2,3-Triazole with Two Conformational Isomers:1-Benzyl-5-((4-methoxyphenyl)ethynyl)-4-phenyl-1H-1,2,3-triazole

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Chinese Journal of Structural Chemistry 2016年第1期35卷 55-60页

作者： AHMED Muhammad Naeem YASIN Khawaja Ansar KHAN Bilal Ahmad riaz Muhammad SADIQ-UR-REHMAN LO Kong Mun NASEER Muhammad Moazzam ARSHAD Ifzan IRSHAD Muhammad Department of Chemistry The University of Azad Jammu and Kashmir Department of Chemistry University of Malaya Department of Chemistry Quaid-i-Azam University Department of Chemistry University of Poonch Rawalakot Azad Kashmir

The title compound l-benzyl-5-（（4-methoxyphenyl）ethynyl）-4-phenyl-1H-1,2,3-triazole（C24H19N3O） was designed and synthesized using one-pot strategy and structural characterization was done by single-crystal X-ray diffraction,NMR,IR and *** compound was crystallized out from an ethanolic solution in triclinic system,space group P1 with a =9.9038（9）,b = 10.2928（9）,c = 18.8715（19）A°,α = 103.541（6）,β = 90.507（7）,γ = 97.157（7）°,V =1854.2（3） A°3,Z = 4,crystal size（mm） = 0.25 × 0.1 × 0.1 and R（int） = *** asymmetric unit contains two independent *** crystal structure of the title compound is stabilized by intramolecular interactions of types C-H…N and C-H…***,X-ray analysis reveals obvious C-H…π,π-π stacking interactions between two adjacent aromatic ring planes.

关键词： click chemistry trisubstituted triazole alkyne crystal structure C–H…π interactions

Verification of Substring Searches on the Untrusted Cloud

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ZTE Communications 2016年第B6期14卷 10-20页

作者： Faizal riaz-ud-Din Robin Doss School of Information Technology Deakin University

Ensuring the correctness of answers to substring queries has not been a concern for consumers working within the traditional confines of their own organisational infrastructure. This is due to the fact that organisations generally trust their handling of their own data hosted on their own servers and networks. With cloud computing however, where both data and processing are delegated to unknown servers, guarantees of the correctness of queries need to be available. The verification of the results of substring searches has not been given much focus to date within the wider scope of data and query, verification. We present a verification scheme for existential substring searc, hes on text files, which is the first of its kind to satisfy the desired properties of authenticity, completeness, and freshness. The scheme is based on suffix arrays, Merkle hash trees and cryptographic hashes to provide strong guarantees of correctness for the consumer, even in fully untrusted environments. We provide a description of our scheme, along with the results of experiments conducted on a fully-working prototype.

关键词： substring search query verification cloud

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采用控制理论方法制备量子门

采用控制理论方法制备量子门

作者： Bilal riaz 中国科学技术大学

学位级别：硕士

本论文的重点是利用控制理论和工程方法实现量子门。由于量子门的实现对于实现量子计算机的实现非常重要,控制量子门系统的量子系统方法对量子计算机的实现非常重要。本文基于Lyapunov方法研究了—个量子比特量子门的实现,并采用最优控... 详细信息

本论文的重点是利用控制理论和工程方法实现量子门。由于量子门的实现对于实现量子计算机的实现非常重要,控制量子门系统的量子系统方法对量子计算机的实现非常重要。本文基于Lyapunov方法研究了—个量子比特量子门的实现,并采用最优控制方法实现了两个量子比特量子门。为了实现—个量子位量子门,我们采用了基于Lyapunov的方法,这是因为—个量子位系统是最简单的量子系统,—个量子位系统的演化要么位于布洛赫球体上要么在其内部,这非常简单,几何结构,这类系统的演化类似于球体上或球体内的经典旋转。多量子比特量子系统不同于—个量子比特系统,因为我们不能将它们的演化看作是球上的演化,这是由于相互作用的结果导致多量子比特量子系统的纠缠,这是我们的主要原因没有将我们的Lyapunov方法扩展到多量子位系统。为了实现多量子比特量子系统的相干控制,最广泛采用的方法是最优量子控制。基于最优控制的策略具有的优点是,在实现中也可以考虑诸如控制频带限制和幅度限制的实验性约束。因此,对于两个量子位量子门合成,我们应用了最佳控制方法如Krotov方法,GRAPE,CRAB以及CRAB和GRAPE的组合。在本论文中,对于具有Ising型漂移的封闭两个量子比特量子系统的可控非门的制备,所有这些方法都进行了研究和比较。本文还表明,基于梯度的量子门设计优化控制方法比非梯度方法有更好的表现。

关键词： Lyapunov Method Quantum Gate CRAB GRAPE Krotov Method

Impact of Trade on Quality of Economic Growth in Developing Countries

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Impact of Trade on Quality of Economic Growth in Developing ...

作者： Ayesha riaz 山东大学

学位级别：硕士

关于贸易与增长关系的讨论并不简单。长期来看,贸易会促进经济增长和繁荣,但增长质量和数量之间存在广泛的非一致性,在增长质量层面贸易是否产生了积极的作用?本研究分析了贸易对发展中国家经济增长质量的影响。主要目标国家是非洲,拉... 详细信息

关于贸易与增长关系的讨论并不简单。长期来看,贸易会促进经济增长和繁荣,但增长质量和数量之间存在广泛的非一致性,在增长质量层面贸易是否产生了积极的作用?本研究分析了贸易对发展中国家经济增长质量的影响。主要目标国家是非洲,拉丁美洲和亚太地区,使用(1990-2009)的面板数据。本研究从三个指标衡量经济增长的质量:效率,稳定性和增长的可持续性。我通过主成分分析法(PCA)测算经济增长的综合质量指标和增长效率、稳定性、可持续性3个分类质量指标。然后利用静态和动态面板考察了国际贸易对增长质量的作用,并考察了政府干预的影响。实证结果表明,贸易并不直接影响经济增长质量,但政府干预会改善贸易的作用,联合项对经济增长质量产生积极和显著增强。在分类指标回归中,贸易和政府干预在增长效率,稳定性和可持续性渠道也产生了积极作用。

关键词：国际贸易增长质量政府因素

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基于切削力的内冷铣削研究

基于切削力的内冷铣削研究

作者： Umair riaz 广东海洋大学

学位级别：硕士

在机械加工中,为了从刀具和工件中带走热量,必须采用冷却处理。不正确的冷却方式可能会降低加工质量和刀具寿命。外冷是通常采用的冷却方式,然而,外冷的冷却液有时不能很好地接触到切削表面,从而达不到所需的冷却效果,在内孔铣削时这一... 详细信息

在机械加工中,为了从刀具和工件中带走热量,必须采用冷却处理。不正确的冷却方式可能会降低加工质量和刀具寿命。外冷是通常采用的冷却方式,然而,外冷的冷却液有时不能很好地接触到切削表面,从而达不到所需的冷却效果,在内孔铣削时这一问题尤其突出。为解决这一问题,切削液从刀具内孔喷出的内冷方式得到了研究应用,以提升冷却效果。作者所在课题组在前期工作中已开发出了一种内冷铣刀,本研究采用这种内冷铣刀开展了内冷铣削研究,以测试铣削加工中的内冷方式相对于外冷方式的优点,并揭示内孔铣削时的切削力特征。本研究的主要工作和研究结果为:(1)采用不同直径的刀具、不同的主轴转速、相同的进给量、相同的切削宽度和切削深度做了zig-zag铣削实验。实验结果表明外冷方式的切削力显著大于内冷方式的切削力,而且刀具直径越大,两者的差异越大。(2)开展了内孔铣削的切削力理论分析,分析结果表明,x向和y向的切削分力数学表示式接近于正弦函数。(3)采用不同直径的刀具和不同的主轴转速做不同直径内孔的铣削实验。实验结果表明:内冷铣削的切削力小于外冷铣削的切削力;z向力在切削力的三维分力中最大;随着刀具铣削深度增大,切削力也增大,外冷时切削力增大得很显著,而内冷时切削力相对增大较少,z向切削分力比x向和y向切削分力增大得更为显著。从这些结果中可得出如下结论:(1)作者所在课题组前期开发的内冷铣刀的切削性能较好;(2)内冷方式优于外冷方式,与zig-zag铣削相比,在内孔铣削中应用内冷方式效果更显著;(3)内孔铣削的切削力有如下规律:切削力与孔和刀具的直径相关;z向切削分力远大于x、y向切削分力;随着刀具下降,切削力将显著增大,其原因可能在于切屑难于从孔中排出,在外冷时这一现象更加明显,这表明在铣孔深度较大时,内冷的工况明显优于外冷的工况。本研究结果可供铣削相关的生产和科研工作人员参考。

关键词：切削力内孔铣削 zig-zag铣削内冷外冷