Articles
256 open-access articles · page 12 of 13
ArticlesSOLUTION TO BERMAN’S MODEL OF VISCOUS FLOW IN POROUS CHANNEL BY OPTIMAL HOMOTOPY ASYMPTOTIC METHOD
Murad Ullah Khan, S. Zuhra, M. Alam, R. Nawaz
Berman developed the fourth-order nonlinear differential equation with initial and boundary conditions. This model is based on two-dimensional, steady, incompressible viscous fluids that flow through the permeable channel with wall suction/Injection. The solut…
30 Jul 2020- Articles
A TWO-WAREHOUSE SUPPLY CHAIN NETWORK DESIGN AND OPTIMIZATION WITH CROSS-ROUTE COSTS AND BUDGET, MAXIMUM FLOW AND CAPACITY CONSTRAINTS
Razaullah, Iftikhar Hussain
Supply chain optimization techniques for modelling the behavior of manufacturing supply chains have been used for long in order to allow better planning, minimize total cost and improve efficiency. In this paper, a systematic approach is presented for the faci…
30 Jul 2020 - Articles
DEVELOPMENT OF PROJECT EXECUTION COMPLEXITY INDEX
Ebtisam Mirza, Nadeem Ehsan
Growing complexity is one of the main reasons behind failure of many projects. Project management academicians have conceived a few complexity characterization models but a comprehensive complexity measurement model encompassing factors of important project co…
30 Jul 2020 - Articles
FACTORS IDENTIFICATION FOR COAL BRIQUETTES MANUFACTURING USING STATISTICAL EXPERIMENTAL DESIGN APPROACH
Misbah Ullah, Rehman Akhtar, Sikandar Bilal Khattak, Khawar Naeem, Khizar Azam
Coal briquettes are mostly manufactured through conventional methods in developing countries including Pakistan. Shortages of energy resources across the globe have pushed companies to manufacture those products with least possible costs by using signifi…
30 Jul 2020 - Articles
PARAMETRIC SENSITIVITY ANALYSIS OF CONVEX STAR PORT PROPELLANT GRAIN FOR SOLID ROCKET MOTOR
Aqeel Nawaz, Muhammad Ali Kamran
Grain design takes the central place in a solid rocket motor design activity. Ballistic quality of a designed grain can be evaluated by two vital indexes known as neutrality and sliver content. Sliver content results in tail-off of the thrust-time curve. These…
30 Jul 2020 - Articles
STUDY OF POLLUTION LAOD IN PAPER MILL EFFLUENTS AND ITS RECYCLING BY SUNDRY PLANTS AT HAYATABAD INDUSTRIAL ESTATE, PESHAWAR
Nazish Huma Khan, Mohammad Nafees, Adila Bashir, Farooq Ahmad
This study was initiated to explore the concept of recycling of paper mill effluents at Hayatabad Industrial Estate, Peshawar. The objective was to reduce pollution load of paper mill effluents via recycling of sundry plants. For this purpose a detail study wa…
30 Jul 2020 - Articles
DESIGN OF A LOW NOISE, LOW POWER AND SPURIOUS FREE PHASE FREQUENCY DETECTOR AND CHARGE PUMP FOR PHASE-LOCKED LOOPS
Muneeb Abrar, Shabbir Majeed Chaudhry
This paper presents a very simple approach to design effective PFD (Phase Frequency Detector) and charge pump (CP)circuitsfor high frequency Phase-Locked Loop (PLL) applications. ThePFD design uses only six transistors for the detection process, which reduces…
30 Jul 2020 - Articles
PROJECTION ETCHING OF KERATIN THIN FILMS FOR FABRICATION OF SKIN STRUCTURE USING ARF EXCIMER LASER
Bibi Safia Haq, Hidayat Ullah Khan, Abdul Shakoor, Shahnaz Attaullah, Ishrat Rahim
In this study the ablation efficiency and the phenomenology of the etched keratin patterns have been investigated and the surface modification was analysed. For effective studies of skin treatments, large areas of model skin need to be generated. Therefore an…
30 Jul 2020 - Articles
IRRIGATION EFFICIENCIES POTENTIAL UNDER SURFACE IRRIGATED FARMS IN PAKISTAN
Ghani Akbar, Muhammad Munir Ahmad, Abdul Ghafoor, Matiullah Khan, Zafar Islam
The conventional surface irrigation systems, border, level basin and furrow bed, are inherently inefficient in Pakistan, while the suboptimal field sizes (length and width) are considered as one of the main reasons of poor performance. Addressing these issues,…
30 Jul 2020 - Articles
ENVIRONMENTAL IMPACT ASSESSMENT OF POTENTIAL MINING CONCERNS AT THAR COAL FIELDS AND THEIR REMEDIES
Naeem A. Mughal, Yasmin Nergis
1*Environmental Research Center, Department of Earth and Environmental Science, Bahria University, Karachi Campus, Pakistan.
30 Jul 2020 - Articles
INVESTIGATION THE TRIBOLOGICAL CHARACTERISTICS OF CASTOR OIL WITH MINERAL OIL BLENDS
Ahmad Hussain, Syed Murtuza Mehdi, Amjad Ali, Muhammad Adeel, Mohammed Hassan Jabal, Farid Nasir Ani
Vegetable oil can be a possible substitute for petroleum-based products for many applications and is the focus of research in this study. Besides being a renewable energy resources with instant and perpetual availability, vegetable oil based products can…
30 Jul 2020 - Articles
COST VERSUS RELIABILITY ANALYSIS OF NEW TREE-BASED HYBRID PROTECTION ARCHITECTURE FOR OPTICAL CODE DIVISION MULTIPLE ACCESS SYSTEM
Waqas, A. Imtiaz, Yousaf Khan, Syed Waqar Shah
Conventional optical code division multiple access (OCDMA) system for passive optical network (PON) has limited applications in providing protection to network components. This increases the overall downtime of PON, and reduce its feasibility for deployment at…
30 Jul 2020 - Articles
IDENTIFICATION OF THE OPTIMAL OPERATING PARAMETERS OF LOCALLY AVAILABLE COAL FOR USE IN PAKISTANI INDUSTRIES
Muhammad Alam Zeb Khan, Muhammad Ali Kamran, Khan Muhammad, Khizar Azam
A parametric study intended to determine optimum burning parameters of locally available coal from mines in Darra Adam Khel is being reported. The coal samples were tested in a cyclone combustor using the pulverized coal combustion technique. Effect of m…
30 Jul 2020 - Articles
THE EFFECTS OF TANGIBLE AND INTANGIBLE ASPECTS ON EMPLOYEES’ PERFORMANCE
Muhammad Nafees Khan, Iftikhar Hussain, Muhammad Tahir, Misbah Ullah, Shehzad Ali Jamshed
Manufacturing sector of Pakistan is facing tough competition from national & international organizations. In such a competitive environment, organizations can compete effectively by utilizing the potential of its human resource. While managing human resour…
30 Jul 2020 - Articles
IMPACTS OF CLIMATE CHANGE ON CROP WATER REQUIREMENT UNDER MULTI - REPRESENTATIVE CONCENTRATION PATHWAYS DURING MID-CENTURY: A CASE STUDY OF D. I. KHAN
Muhammad Shahzad Khattak, Barkatullah, Ayesha Aziz, Jamil Ahmad, Mohammad Sharif, Mukand Singh Babel et al.
Climate change is a major problem which directly affects agricultural economy of a region as the crop water requirements of major crops is increased. This study was conducted to estimate evapotranspiration (ETo) and crop water requirements (CWR) of wheat and m…
30 Jul 2020 - Articles
AN EFFICIENT AND SECURE SESSION KEY ESTABLISHMENT SCHEME FOR HEALTH-CARE APPLICATIONS IN WIRELESS BODY AREA NETWORKS
Gulzar Mehmood, M. Zahid Khan, Haseeb Ur Rahman, Sohail Abbas
Wireless Body Area Network (WBAN) is special breed of Wireless Sensor Network (WSN). Due to the increasing interest and the tremendous advancement in miniaturization and sensor technology, WBAN has emerged as an active filed of research. WBAN has many un…
30 Jul 2020 - Articles
PRODUCTIVITY MEASUREMENT AND ANALYSIS OF A PUBLIC SECTOR AUTOMOBILE REBUILD ORGANIZATION
Muhammad Qasim Khan, Syed Athar Masood
Public sector automobile rebuild organizations have comparatively low productivity as compared to private sector organizations especially in developing countries. Despite gigantic budgetary allotments, public sector rebuild organizations remain non-produ…
30 Jul 2020 - Articles
EFFECT OF POROSITY ON MECHANICAL PROPERTIES OF DIE CAST ALUMINUM ENGINE BLOCK
Feroz Shah, Mohammad A. Irfan, Kareem Akhtar, Abdul Shakoor, Naeem Khan
Casting imperfections, especially porosity in Aluminum alloy engine block plays a major role in determining the mechanical properties. An experimental study was carried out to investigate porosity in samples taken from different locations of the engine b…
30 Jul 2020 - Articles
EVALUATION OF FLEXURAL RIGIDITY AND ABRASION RESISTANCE OF POST AND META-FINISHED PIGMENT DYED P/C FABRICS
Shabana Rafique, Shahnaz Parveen Khattak, Tanveer Hussain, Faiza Tauqeer, Bashir Ahmad
The present study was conducted to explore the pigment colouration system in conjunction with functional finishing treatments for polyester/cotton (P/C) blended fabrics; further to assess its effect on flexural rigidity and abrasion resistance. The simultaneou…
30 Jul 2020 - Articles
EXPERIMENTAL ANALYSIS OF BRIDGE PIER SCOUR PATTERN
Mujahid Khan, Mohammad Tufail, Muhammad Fahad, Hazi Muhammad Azmathullah, Muhammad Sagheer Aslam, Fayaz Ahmad Khan et al.
Being an important component of a transportation system, bridge piers needs to be properly designed for scouring around its piers. For proper design of bridge piers, appropriate investigation of scouring patterns is extremely important for various sizes and sh…
30 Jul 2020