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Snowmelt runoff prediction under changing climate in the Himalayan cryosphere: A case of Gilgit River Basin

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Geoscience Frontiers 2017年第5期8卷 941-949页

作者： muhammad Adnan Ghulam Nabi muhammad Saleem Poomee arshad Ashraf Climate Change Alternate Energy and Water Resources Institute (CAEWRI) National Agricultural Research Center Park Road Chakshahzad Islamabad Pakistan Center of Excellence in Water Resources (CEWR) Lahore Pakistan

There are serious concerns of rise in temperatures over snowy and glacierized Himalayan region that may eventually affect future river flows of Indus river system. It is therefore necessary to predict snow and glacier melt runoff to manage future water resource of Upper Indus Basin(UIB). The snowmelt runoff model(SRM) coupled with MODIS remote sensing data was employed in this study to predict daily discharges of Gilgit River in the Karakoram Range. The SRM was calibrated successfully and then simulation was made over four years i.e. 2007, 2008, 2009 and 2010 achieving coefficient of model efficiency of 0.96, 0.86, 0.9 and 0.94 respectively. The scenarios of precipitation and mean temperature developed from regional climate model PRECIS were used in SRM model to predict future flows of Gilgit River. The increase of 3 C in mean annual temperature by the end of 21 th century may result in increase of 35-40% in Gilgit River flows. The expected increase in the surface runoff from the snow and glacier melt demands better water conservation and management for irrigation and hydel-power generation in the Indus basin in future.

关键词： Snowmelt runoff model Climate change Gilgit River Himalayan region

Cloud-based ***-based IoT:a comparative survey and way forward

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Frontiers of Information Technology & Electronic Engineering 2020年第4期21卷 563-586页

作者： Raheel Ahmed MEMON Jian Ping LI junaid AHMED muhammad Irshad NAZEER muhammad ISMAIL Khursheed ALI School of Computer Science and Technology University of Electronic Science and Technology of ChinaChengdu 610031China Department of Computer Science Sukkur IBA UniversitySukkur 65200Pakistan School of Automation University of Electronic Science and Technology of ChinaChengdu 610031China

The Internet of Things(IoT)has been evolving for more than a *** advancements have increased its popularity,but concerns and risks related to IoT are growing considerably along with the increased number of connected *** 2013,a new cryptography-based infrastructure called blockchain emerged with the potential to replace the existing cloud-based infrastructure of IoT through *** this article,we provide a taxonomy of the challenges in the current IoT infrastructure,and a literature survey with a taxonomy of the issues to expect in the future of the IoT after adopting blockchain as an *** two architectures are compared based on their strengths and *** a brief survey of ongoing key research activities in blockchain is presented,which will have considerable impact on overcoming the challenges encountered in the applicability of blockchain in ***,considering the challenges and issues in both infrastructures and the latest research activities,we propose a high-level hybrid IoT approach that uses the cloud,edge/fog,and blockchain together to avoid the limitations of each infrastructure.

关键词： Internet of Things(IoT) Cloud Blockchain Data center Taxonomy

Heterogeneous Expansion of End-moraine Dammed Lakes in the Hindukush-Karakoram-Himalaya Ranges of Pakistan during 2001-2013

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Journal of Mountain Science 2015年第5期12卷 1113-1124页

作者： arshad ASHRAF Rozina NAZ muhammad Bilal IQBAL Climate Change Alternate Energy and Water Resources Institute (CAEWRI) National Agricultural Research Center

Global climate change during the twentieth century had a significant impact on the glaciers that resulted in creation of new lakes and expansion of existing ones, and ultimately an increase in the number of glacial lake outburst floods(GLOFs) in the Himalayan region. This study reports variation of the end-moraine dammed lakes in the high altitude Hindukush-Karakoram-Himalaya(HKH) region of Pakistan to evaluate future floods hazard under changing climate in this region. An integrated temporal remote sensing and Geographic information system(GIS) based approach using satellite images of Landsat-7 and 8 was adopted to detect 482 endmoraine dammed lakes out of which 339 lakes(>0.02 km2) were selected for temporal change analysis during the 2001-2013 period. The findings of the study revealed a net expansion in the end-moraine dammed lakes area in the Karakoram(about 7.7%) and in the Himalayas(4.6%), while there was a net shrinkage of about 1.5% in the lakes area in the Hindukush range during this period. The percentage increase in the lakes' area was highest above 4500 m asl in the Hindukush, within 3500-4000 m asl in the Himalayas and below 3500 m asl in the Karakoram range. The overall positive change in the lakes' area appears to prevail in various altitudinal ranges of the region. The heterogeneous areal changes in the endmoraine dammed lakes might be attributed to different climate regimes and glacial hydrodynamics in the three HKH ranges. A periodic monitoring of the glacial lakes and their associated glaciers is essential for developing effective hazard assessment and risk reduction strategies for this high altitude Himalayan region.

关键词： End-moraine glacial lakes GLOF Karakoram Himalayan region

From Molecular Pathology of COVID-19 to Nigella Sativum as a Treatment Option:Scientific Based Evidence of Its Myth or Reality

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Chinese Journal of Integrative Medicine 2022年第1期28卷 88-95页

作者： muhammad Atif Farrah Naz junaid Akhtar muhammad Imran Sidrah Saleem Javed Akram muhammad Imran muhammad Ikram Ullah Department of Clinical Laboratory Sciences College of Applied Medical SciencesJouf UniversitySakaka(75471)Saudi Arabia Department of Microbiology Government College UniversityFaisalabad(38000)Pakistan Department of Microbiology University of Health SciencesLahore(54600)Pakistan Department of Allied Health Sciences Sargodha Medical CollegeUniversity of SargodhaSargodha(40100)Pakistan University of Health Sciences Lahore(54600)Pakistan University Institute of Diet and Nutritional Sciences Faculty of Allied Health SciencesThe University of LahoreLahore(54590)Pakistan

COVID-19 virus is a causative agent of viral pandemic in human beings which specifically targets respiratory system of humans and causes viral *** unusual viral pneumonia is rapidly spreading to all parts of the world,currently affecting about 105 million people with 2.3 million *** review described history,genomic characteristics,replication,and pathogenesis of COVID-19 with special emphasis on Nigella sativum(***)as a treatment *** seeds are historically and religiously used over the centuries,both for prevention and treatment of different *** review summarizes the potential role of *** seeds against COVID-19 infection at levels of in silico,cell lines and animal models.

关键词： coronavirus nCoV-19 COVID-19 Nigella sativum review

Stochastic Computational Approach for Complex Nonlinear Ordinary Differential Equations

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Chinese Physics Letters 2011年第2期28卷 20-23页

作者： junaid Ali Khan muhammad Asif Zahoor Raja Ijaz Mansoor Qureshi Department of Electronic Engineering International Islamic UniversityIslamabadPakistan Department of Electrical Engineering Air UniversityIslamabadPakistan

We present an evolutionary computational approach for the solution of nonlinear ordinary differential equations(NLODEs).The mathematical modeling is performed by a feed-forward artificial neural network that defines an unsupervised *** training of these networks is achieved by a hybrid intelligent algorithm,a combination of global search with genetic algorithm and local search by pattern search *** applicability of this approach ranges from single order NLODEs,to systems of coupled differential *** illustrate the method by solving a variety of model problems and present comparisons with solutions obtained by exact methods and classical numerical *** solution is provided on a continuous finite time interval unlike the other numerical techniques with comparable *** the advent of neuroprocessors and digital signal processors the method becomes particularly interesting due to the expected essential gains in the execution speed.

关键词： technique methods ordinary

Process development for green part printing using binder jetting additive manufacturing

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Frontiers of Mechanical Engineering 2018年第4期13卷 504-512页

作者： Hadi MIYANAJI Morgan ORTH junaid muhammad AKBAR Li YANG Department of Industrial Engineering University of Louisville Louisville KY 40292 USA Department of Mechanical Engineering University of LouisvilleLouisville KY 40292 USA

Originally developed decades ago, the binder jetting additive manufacturing （B J-AM） process possesses various advantages compared to other additive manufacturing （AM） technologies such as broad material compat- ibility and technological expandability. However, the adoption of B J-AM has been limited by the lack of knowledge with the fundamental understanding of the process principles and characteristics, as well as the relatively few systematic design guideline that are available. In this work, the process design considerations for B J-AM in green part fabrication were discussed in detail in order to provide a comprehensive perspective of the design for additive manufacturing for the process. Various process factors, including binder saturation, in- process drying, powder spreading, powder feedstock characteristics, binder characteristics and post-process curing, could significantly affect the printing quality of the green parts such as geometrical accuracy and part integrity. For powder feedstock with low flowability, even though process parameters could be optimized to partially offset the printing feasibility issue, the qualities of the green parts will be intrinsically limited due to the existence of large internal voids that are inaccessible to the binder. In addition, during the process development, the balanced combination between the saturation level and in-process drying is of critical importance in the quality control of the green parts.

关键词： binder jetting additive manufacturing green part process optimization process development

Genomic insights into citrus domestication and its important agronomic traits

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Plant Communications 2021年第1期2卷 29-44页

作者： muhammad junaid Rao Hao Zuo Qiang Xu Key Laboratory of Biology and Genetic Improvement of Horticultural Crops Ministry of AgricultureKey Laboratory of Horticultural Plant Biology(Ministry of Education)Huazhong Agricultural UniversityWuhanHubei 430070P.R.China

Citrus originated in Southeast Asia,and it has become one of the most important fruit crops *** has a long and obscure domestication history due to its clonal propagation,long life cycle,wide sexual compatibility,and complex genetic *** the genomic information of both wild and cultivated citrus becomes available,their domestication history and underlying traits or genes are becoming *** review outlines the genomic features of wild and cultivated *** propose that the reduction of citric acid is a critical trait for citrus *** genetic model representing the change during domestication may be associated with a regulatory complex known as WD-repeat-MYB-bHLH-WRKY(WMBW),which is involved in acidification and anthocyanin *** reduction in or loss of anthocyanins may be due to a hitchhiking effect of fruit acidity selection,in which mutation occurs in the common regulator of these two pathways in some domesticated ***,we have summarized the domestication traits and candidate genes for breeding *** review represents a comprehensive summary of the genes controlling key traits of interest,such as acidity,metabolism,and disease *** also sheds light on recent advances in early flowering from transgenic studies and provides a new perspective for fast breeding of *** review lays a foundation for future research on fruit acidity,flavor,and disease resistance in citrus.

关键词： citrus domestication fruit acidity genome wild germplasm

Novel Approach for a van der Pol Oscillator in the Continuous Time Domain

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Chinese Physics Letters 2011年第11期28卷 16-19页

作者： junaid Ali Khan muhammad Asif Zahoor Raja Ijaz Mansoor Qureshi Department of Electronic Engineering International Islamic UniversityIslamabadPakistan

We investigate the continuous time domain numerical treatment of a van der Pol oscillator,applying the trial solution as an artificial feed-forward neural network model containing unknown adjustable *** optimization of the network is performed by simulated annealing in an unsupervised *** proposed scheme is tested successfully by its application in both non-stiff and stiff *** reliability and effectiveness is validated through comprehensive statistical *** obtained results are in good agreement with the classical RK45 method.

关键词： artificial neural stiff

Green corrosion inhibitors intercalated Mg:Al layered double hydroxide coatings to protect Mg alloy

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Rare Metals 2021年第8期40卷 2254-2265页

作者： muhammad junaid Anjum Jing-Mao Zhao Vahdat Zahedi Asl muhammad Uzair Malik Ghulam Yasin Waheed Qamar Khan College of Materials Science and Engineering Beijing University of Chemical TechnologyBeijing100029China Beijing Key Laboratory of Electrochemical Process and Technology for Materials Beijing100029China Institute of Advanced Materials Bahauddin Zakariya UniversityMultan60800Pakistan

Mg alloy was protected with Mg:Al layered double hydroxide(LDH)coating intercalated with three green corrosion inhibitors(sodium benzoate,3-aminopropyltriethoxysilane and 8-hydroxyquinoline).The in-situ hydrothermal approach was adopted to intercalate corrosion inhibitors into Mg:Al LDH *** intercalated Mg:Al LDH coating was successfully acquired,and the crystalline structure of Mg:Al LDH coating was verified with X-ray diffraction(XRD).The organic functional groups of corrosion inhibitors were identified with the help of Fourier transform infrared spectroscopy(FTIR)and X-ray photoelectron spectroscopy(XPS).The compact and uniform morphology was confirmed by scanning electron microscopy(SEM).The electrochemical measurement revealed better corrosion resistance of corrosion inhibitorintercalated Mg:Al LDH coatings as compared to that of pristine Mg *** corrosion protection mechanism of corrosion inhibitors was described and unearthed the corrosion inhibitor with the best performance.

关键词： Magnesium Layered double hydroxide coating Organic inhibitors Intercalation Corrosion resistance