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狂犬病病毒入胞途径的初步探索

中国兽医学报 2018年第3期38卷 502-507页

作者：王新宇郭艺迪高洁赵铭昕刘恩华段铭关振宏 waqas ahmad 张茂林吉林大学人兽共患病研究所、人兽共患病研究教育部重点实验室吉林长春130062 吉林大学动物医学学院吉林长春130062 Section of Epidemiology and Public Health College of Veterinary and Animal SciencesJhang 35200 Pakistan

狂犬病病毒（rabies virus,RABV）具有高度嗜神经性,通过识别细胞膜上特异性受体并借助内吞途径侵入细胞。为了探究其入胞途径,本研究在人神经瘤细胞（SH-SY5Y）和非洲绿猴肾上皮细胞（Vero）上,应用氯丙嗪（chlorpromazine）、制霉菌素... 详细信息

狂犬病病毒（rabies virus,RABV）具有高度嗜神经性,通过识别细胞膜上特异性受体并借助内吞途径侵入细胞。为了探究其入胞途径,本研究在人神经瘤细胞（SH-SY5Y）和非洲绿猴肾上皮细胞（Vero）上,应用氯丙嗪（chlorpromazine）、制霉菌素（nystatin）、巴弗洛霉素a1（bafilomycin a1）、dynasore等抑制剂处理细胞后,进行RABV感染,通过检测病毒N基因拷贝数和RABV效价,对RABV入胞途径进行初步探究。结果显示,RABV通过网格蛋白介导、低pH值和发动蛋白（dynamin）依赖途径侵入SH-SY5Y和Vero细胞,但不通过小窝蛋白依赖途径入胞。这些结果为进一步研究狂犬病病毒感染机制和药物靶点研究提供了新的数据。

关键词：狂犬病病毒入胞途径抑制剂网格蛋白低pH值 dynamin 小窝蛋白

腐植酸施用方法对绿豆产量及其构成因子的影响

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腐植酸 2016年第6期 36-40页

作者： Muhammad waqas Bashir ahmad Muhammad Arif Fazal Munsif Abdul Latif Khan Muhammad Amin Sang-Mo Kang Yoon-Ha Kim In-Jung Lee 刘雪娇茹雪峰高同国韩国庆北大学应用生物科学学院巴基斯坦开伯尔-普什图农业大学白沙瓦25000 巴基斯坦开伯尔-普什图农业推广学院布内尔999010 阿曼尼兹瓦大学生物科学与化学学院尼兹瓦518103 美国密苏里大学植物科学学院和大豆生物技术国家中心(NCSB) 哥伦比亚999076 河北农业大学生命科学学院保定071001 保定市清苑区第一中学保定071100

为了探索腐植酸(HA)的施用方法,在白沙瓦开伯尔-普什图省农业大学的农业研究农场内进行了完全随机区组设计试验,并设置3次重复。HA的施用方法分为浸种、叶片喷施和土壤施用3种。HA的施用方法对绿豆单株结荚数、每荚粒数、千粒重和籽粒... 详细信息

为了探索腐植酸(HA)的施用方法,在白沙瓦开伯尔-普什图省农业大学的农业研究农场内进行了完全随机区组设计试验,并设置3次重复。HA的施用方法分为浸种、叶片喷施和土壤施用3种。HA的施用方法对绿豆单株结荚数、每荚粒数、千粒重和籽粒产量具有显著影响,而对绿豆生物量影响不大。每公顷土地施用3 kg HA能显著提高绿豆结荚率、千粒重和产量;而土壤中加入1 kg/hm^2和2 kg/hm^2 HA,浓度为0、1%、2%的HA浸种和0.01%、0.05%、0.1%的HA叶面喷施3种方法所得到的结果在统计学上相似。由此得出结论:3种施用HA的方法均能显著提高绿豆产量及其构成因子。

关键词：绿豆腐植酸浸种叶面喷施土壤施用产量

A unified approach of energy and data cooperation in energy harvesting WSNs

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Science China(Information Sciences) 2018年第8期61卷 170-182页

作者： Roomana YOUSAF Rizwan ahmad waqas AHMED Fu-chun ZHENG School of Electrical Engineering and Computer Science National University of Sciences and Technology Department of Electrical Engineering Pakistan Institute of Engineering and Applied Sciences School of Electronic and Information Engineering Harbin Institute of Technology

Energy harvesting(EH) provisioned wireless sensor nodes are key enablers to increase network life time in modern wireless sensor networks(WSNs). However, the intermittent nature of the EH process necessitates management of nodes’ limited data and energy buffer capacity. In this paper, a unified mathematical model for a cooperative EHWSN with an opportunistic relay is presented. The energy and data causality constraints are expressed in terms of throughput, available energy, delay and transmission *** finite energy buffers, data buffers and discrete transmission rates(as defined in the standard IEEE 802.15.4) at the nodes, different intuitive online power allocation policies at the relay are *** results show that a policy achieving high throughput is less fair and vice versa. Therefore, a joint rate and power allocation policy(JRPAP) is proposed in this study which provides a better trade off between fairness, throughput and energy over intuitive policies. Based on the JRPAP results, we propose to use data aggregation(DA) to achieve throughput gain at lower buffer sizes. In addition, the notion of energy aggregation(EA) is introduced to achieve throughput gain at higher buffer sizes. Combining both EA and DA further improves the overall throughput at all buffer sizes.

关键词： energy harvesting energy causality data causality energy aggregation data aggregation opportunistic relay

Transmit Power Optimization for Relay-Aided Multi-Carrier D2D Communication

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Tsinghua Science and Technology 2018年第1期23卷 65-74页

作者： Muhammad waqas Guftaar ahmad Sardar Sidhu Tayyaba Jabeen Muhammad Afaq ahmad Muhammad Awais Javed Department of Electrical Engineering COMSATS Institute of Information Technology (CIIT) Islamabad 44000 Pakistan Transmission Department Pakistan Telecommunication Company Limited (PTCL) Islamabad 44000 Pakistan

In this paper, we consider the power optimization problem in Orthogonal Frequency Division Multiplexing （OFDM）-based relay-enhanced device-to-device （D2D） communication. In a single cell transmission scenario, dual- hop communication is assumed in which each D2D user re-uses the spectrum of just one Cellular User （CU）. In this work, we formulate a joint optimization scheme under a Decode-and-Forward （DF） relaying protocol to maximize the sum throughput of D2D and cellular networks via power allocation over different sub-carriers. The problem is thus transformed into a standard convex optimization, subject to individual power constraints at different transmitting nodes. We exploit the duality theory to decompose the problem into several sub-problems and use Karush-Kuhn- Tucker （KKT） conditions to solve each sub-problem. We provide simulation results to validate the performance of our proposed scheme.

关键词： device-to-device communication Orthogonal Frequency Division Multiplexing (OFDM) Decode-and-Forward (DF) relay transmission power optimization

Evaluation of microstructure and mechanical properties of squeeze overcast Al7075-Cu composite joints

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China Foundry 2023年第1期20卷 29-39页

作者： Muhammad waqas Hanif ahmad Wasim Muhammad Sajid Salman Hussain Muhammad Jawad Mirza Jahanzaib Department of Industrial Engineering University of Engineering and Technology TaxilaPunjabPakistan

Al7075-Cu composite joints were prepared by the squeeze overcast *** effects of melt temperature,die temperature,and squeeze pressure on hardness and ultimate tensile strength(UTS)of squeeze overcast Al7075-Cu composite joints were *** experimental results depict that squeeze pressure is the most significant process parameter affecting the hardness and *** optimal values of UTS(48 MPa)and hardness(76 HRB)are achieved at a melt temperature of 800℃,a die temperature of 250℃,and a squeeze pressure of 90 *** electron microscopy(SEM)shows that fractured surfaces show flatfaced morphology at the optimal experimental ***-dispersive spectroscopy(EDS)analysis depicts that the atomic weight percentage of Zn decreases with an increase in melt temperature and squeeze *** optimal mechanical properties of the Al7075-Cu overcast joint were achieved at the Al2Cu eutectic phase due to the large number of copper atoms that dispersed into the aluminum melt during the solidification process and the formation of strong intermetallic *** relational analysis integrated with the Taguchi method was used to develop an optimal set of control variables for multi-response parametric *** tests were performed to validate the effectiveness of the employed *** manufacturing of squeeze overcast Al7075-Cu composite joints at optimal process parameters delivers a great indication to acknowledge a new method for foundry practitioners to manufacture materials with superior mechanical properties.

关键词： squeeze overcast joints Al7075-Cu composite joints mechanical properties gray relational analysis Taguchi method

IRS-enabled NOMA communication systems:A network architecture primer with future trends and challenges

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Digital Communications and Networks 2024年第5期10卷 1503-1528页

作者： Haleema Sadia ahmad Kamal Hassan Ziaul Haq Abbas Ghulam Abbas Muhammad waqas Zhu Han Faculty of Electrical Engineering and Telecommunications and Networking (TeleCoN) Research Center Ghulam Ishaq Khan Institute of Engineering and Technology (GIKI) Faculty of Computer Science and Engineering GIKI Department of Computer Engineering College of Information Technology University of Bahrain School of Engineering Edith Cowan University Department of Electrical and Computer Engineering University of Houston Department of Computer Science and Engineering Kyung Hee University

Non-Orthogonal Multiple Access(NOMA) has already proven to be an effective multiple access scheme for5th Generation(5G) wireless *** provides improved performance in terms of system throughput,spectral efficiency,fairness,and energy efficiency(EE).However,in conventional NOMA networks,performance degradation still exists because of the stochastic behavior of wireless *** combat this challenge,the concept of Intelligent Reflecting Surface(IRS) has risen to prominence as a low-cost intelligent solution for Beyond 5G(B5G) *** this paper,a modeling primer based on the integration of these two cutting-edge technologies,i.e.,IRS and NOMA,for B5G wireless networks is *** in-depth comparative analysis of IRS-assisted Power Domain(PD)-NOMA networks is provided through 3-fold ***,a primer is presented on the system architecture of IRS-enabled multiple-configuration PD-NOMA systems,and parallels are drawn with conventional network configurations,i.e.,conventional NOMA,Orthogonal Multiple Access(OMA),and IRS-assisted OMA *** by this,a comparative analysis of these network configurations is showcased in terms of significant performance metrics,namely,individual users' achievable rate,sum rate,ergodic rate,EE,and outage ***,for multi-antenna IRS-enabled NOMA networks,we exploit the active Beamforming(BF) technique by employing a greedy algorithm using a state-of-the-art branch-reduceand-bound(BRB) *** optimality of the BRB algorithm is presented by comparing it with benchmark BF techniques,i.e.,minimum-mean-square-error,zero-forcing-BF,and ***,we present an outlook on future envisioned NOMA networks,aided by IRSs,i.e.,with a variety of potential applications for 6G wireless *** work presents a generic performance assessment toolkit for wireless networks,focusing on IRS-assisted NOMA *** comparative analysis provides a solid foundation for

关键词： Intelligent reflecting surface Non-orthogonal multiple access 6G Beamforming Sum rate Energy efficiency

A low complexity online controller using fuzzy logic in energy harvesting WSNs

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Science China(Information Sciences) 2019年第4期62卷 167-176页

作者： Talha AZFAR waqas AHMED Abdul HASEEB Rizwan ahmad Sufi Tabassum GUL Fu-Chun ZHENG Department of Electrical Engineering Pakistan Institute of Engineering and Applied Sciences (PIEAS) School of Electrical Engineering and Computer Science National University of Sciences and Technology (NUST) School of Electronic and Information Engineering Harbin Institute of Technology

In this paper, we present a fuzzy logic based scheme for a two hop energy harvesting(EH)wireless sensor network(WSN). Incorporating data and energy causality constraints, discrete transmission rates, finite energy and data buffers, a fuzzy model is developed which uses network throughput, battery level and channel gain as inputs. The fuzzy scheme is then compared with optimum, modified optimum, and Markov decision process(MDP) schemes in terms of computational complexity, throughput, battery level and data buffer capacity. The throughput results show that the fuzzy online scheme preforms closely to the compared schemes and avoids battery depletion even when the number of discrete transmission rates are increased.

关键词： wireless sensor networks energy harvesting cooperative communications fuzzy logic

Multiplicity dependence of the freezeout parameters in high energy hadron-hadron collisions

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Chinese Physics C 2024年第5期48卷 124-133页

作者： Muhammad Ajaz Majid Shehzad Muhammad waqas Haifa I.Alrebdi Mohammad Ayaz ahmad Antalov Jagnandan Shawn Jagnandan Murad Badshah Jalal Hasan Baker Abdul Mosawir Quraishi Department of Physics Abdul Wali Khan University MardanMardan 23200Pakistan School of Mathematics Physics and Optoelectronic EngineeringHubei University of Automotive TechnologyShiyan 442002China Department of Physics College of SciencePrincess Nourah bint Abdulrahman UniversityP.O.Box 84428Riyadh 11671Saudi Arabia Department of Mathematics Physics and StatisticsFaculty of Natural SciencesUniversity of Guyana101110 GeorgetownGuyananSouth America Department of Physics Faculty of ScienceUniversity of TabukTabukKingdom of Saudi Arabia Department of Electrical Engineering College of EngineeringQassim UniversityUnaizahSaudi Arabia

We examined the transverse momentum(pT)spectra of various identified particles,encompassing both light-flavored and strange hadrons(π++π−,K++K−,p+p¯,ϕ,K0s,Λ+Λ¯,Ξ−+Ξ¯+,andΩ−+Ω¯+),across different multiplicity classes in proton-proton collisions(p-p)at a center-of-mass energy of s√=7 *** the Tsallis and Hagedorn models,parameters relevant to the bulk properties of nuclear matter were *** models exhibit good agreement with experimental *** our analyses,we observed a consistent decrease in the effective temperature(T)for the Tsallis model and the kinetic or thermal freeze-out temperature(T0)for the Hagedorn model,as we transitioned from higher multiplicity(class-I)to lower multiplicity(class-X).This trend is attributed to the diminished energy transfer in higher multiplicity ***,we observed that the transverse flow velocity(βT)experiences a decline from class-I to *** normalization constant,which represents the multiplicity of produced particles,was observed to decrease as we moved toward higher multiplicity *** the effective and kinetic freeze-out temperatures,as well as the transverse flow velocity,show a mild dependency on multiplicity for lighter particles,this dependency becomes more pronounced for heavier *** multiplicity parameter for heavier particles was observed to be smaller than that of lighter particles,indicating a greater abundance of lighter hadrons compared to heavier *** particle species were observed to undergo decoupling from the fireball at distinct temperatures:lighter particles exhibit lower temperatures,while heavier ones show higher temperatures,thereby supporting the concept of multiple freeze-out ***,we identified a positive correlation between the kinetic freeze-out temperature and transverse flow velocity,a scenario where particles experience stronger collective motion at a higher freeze-out *** reason for this positive correlation is th

关键词： multiplicity dependence collective properties thermal energy

Pancreatic necrosis:Complications and changing trend of treatment

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World Journal of Gastrointestinal Surgery 2019年第4期11卷 198-217页

作者： Mamoon Ur Rashid Ishtiaq Hussain Sundas Jehanzeb waqas Ullah Saeed Ali Akriti Gupta Jain Neelam Khetpal Sarfraz ahmad Department of Internal Medicine Advent Health Graduate Medical Education Department of Gastroenterology Cleveland Clinic Internal Medicine Abington Hospital Department of Gynecologic Oncology Advent Health Cancer Institute

Incidence of acute pancreatitis seems to be increasing in the Western countries and has been associated with significantly increased morbidity. Nearly 80% of the patients with acute pancreatitis undergo resolution; some develop complications including pancreatic necrosis. Infection of pancreatic necrosis is the leading cause of death in these patients. A significant portion of these patients needs surgical interventions. Traditionally, the "gold standard" procedure has been the open surgical necrosectomy, which is now being completed by the relatively lesser invasive interventions. Minimally invasive surgical(MIS) procedures include endoscopic drainage, percutaneous image-guided catheter drainage, and retroperitoneal drainage. This review article discusses the open and MIS interventions for pancreatic necrosis with each having its own respective benefits and disadvantages are covered.

关键词： Pancreatic necrosis Necrosectomy Open surgery Minimally invasive surgery Complications Treatment Review article