Natural Sciences: Recent submissions

Now showing items 461-480 of 6213

Encryption Schemes Based on General Linear Groups and Grouprings

Inam, Saba (Capital University of Science and Technology, Islamabad, 2019)

Security of some present day public key cryptosystems is based on general linear groups as it is a good choice for developing such type of cryptosystems. This study presents various public key encryption schemes based ...
Applications of Orthogonal Polynomials for the Numerical Solutions of Higher Order Boundary Value Problems

Elahi, Zaffer (University of the Punjab, Lahore, 2018)

A differential equation along with a set of additional constraints (called boundary conditions) form a boundary value problem. Boundary value problems (linear or nonlinear) are found mostly in engineering, applied ...
Asymmetric Cryptographic Schemes Based on Noncommutative Structures

Kanwal, Shamsa (Capital University of Science and Technology, Islamabad, 2019)

Asymmetric cryptography based on groups is mainly concerned with the role of noncommutative groups. The origin of group based cryptography goes back in the 1980s. Since then, numerous cryptographic proposals based on ...
Deposition of Indium and Aluminum Nitrides Thin Films Using Plasma

Anjum, Faiza (Government College University, Lahore, 2019)

Indium nitride (InN) thin films are deposited by using pulsed DC magnetron sputtering technique on glass substrates. The power range is varied from 100 W to 150 W. The structural evaluation of deposited films is carried ...
Fabrication and Characterization of Metallic Multilayers for Advanced Applications

Saher, Sobia (Government College University, Lahore, 2019)

Metallic Multilayer Thin Films and Nanowires containing magnetic layers of Ni, Fe, Co or their Alloys, separated by non-magnetic spacer layer of Cu or Pt were prepared by Magnetron Sputter Deposition and Electrodeposition ...
Fabrication and Characterization of Metallic Multilayers for Advanced Applications

Shafique, Muhammad Ahsan (Government College University, Lahore, 2019)

The surface properties of functional materials are often more important than the bulk properties because of its varied applications. In case of biomaterials, the surface properties become even more important because the ...
Interaction of Commercially Available Drugs with Pseudomembrane Model using Micellar Liquid Chromatography and Electronic Spectroscopy.

Azeem, Waqar (Government College University, Lahore, 2019)

Micro-heterogeneous surfactant assemblies solubilize and encapsulate the active drug molecules and consequently protect them from the adverse environmental conditions. As pseudomodel of biomembranes, the associative ...
Synthesis and Structure-Activity Relationship Studies of Some New Molecules Encompassing Thiazole Core

Ramzan, Muhammad Shahid (Government College University, Lahore, 2019)

The Chemistry and biological studies of heterocyclic compounds has been important field for a long time in Medicinal Chemistry. It is a fundamental need for the development of new drugs having potent activities. The discovery ...
Generalization of Fixed Point Theorems, Existence Results and Analytical Solutions of Fractional Differential Equations

Khan, Aziz (University of Peshawar, Peshawar, 2019)

Fractional calculus is a generalization of classical calculus. Due to the fractional order modeling in different physical fields, scientists have shown their interests in the exploration of its different features. The ...
Investigation of New Methods for the Determination of Triazine Group of Herbicides and Its Applications to Samples of Environmental Importance

Ara, Behisht (University of Peshawar, Peshawar, 2012)

Weeds are a serious challenge for crop production where increasing world population demand increasing supply of food. Chemical weed control is an efficient means of weed control, increase in crop production, decrease in ...
Synthesis, Characterization and Fabrication of Metal Organic Framework Composites for Adsorption and Electrochemical Applications

Nadeem, Muhammad (Allama Iqbal Open University, Islamabad, 2019)

Four metal organic frameworks [Zn(3-bpmh)(1,4-bdc)]n, [Cd(3-bpmh)(1,4-bdc)]n [C8H10CdO7]n.4H2O and C15H17N2NiO8 (Ni-BTC) were synthesized and characterized. N-doped nanostructured porous carbon materials coded as PCN920 ...
Analytical and Numerical Investigation of Two Dimensional Flows with Heat Transfer

Khan, Sheikh Irfan Ullah (HITEC University, Taxila, 2016)

This work is devoted to the study of squeezing flow coupled with heat transfer effects between parallel disks for some Newtonian and Non-Newtonian fluids. The effect of magnetic field has been considered to describe the ...
Synthesis, Characterization and Analytical Applications of Polypyrrole-Metal Oxide Composites

Malook, Khan (Islamia Collage Peshawar, 2018)

In the current study, PPy and its composites with V2O5 were synthesized in aqueous medium by chemical oxidation polymerization method using FeCl3.6H2O as an oxidant. The materials were characterized using FT-IR spectroscopic, ...
Molecular Characterization of Autosomal Recessive Congenital Ichthyosis

Karim, Noreen (Quaid-i-Azam University, Islamabad, 2019)

Autosomal recessive congenital ichthyosis (ARCI) is a genetically and phenotypically heterogeneous group of non-syndromic cornification disorders characterized primarily by generalized hyperkeratotic epidermal scales with ...
Genetic Variability in Some Commercially Important Carnivorous Fishes by Molecular Markers in Punjab Pakistan"

Bhatti, Ehsan Mehmood (Government College University, Faisalabad, 2013)

To conserve the fish biodiversity, there is urgent need to study the genetic diversity of natural fish stocks for successful fishery management, conservation, and rehabilitation of the species. For this purpose, the present ...
Dynamic Models of Non-Reaction and Reactive Liquid Chromatography: Derivation of Analytical and Numerical Solutions

Bashir, Seemab (COMSATS Institute of Information Technology, Islamabad, 2018)

Dynamic Models of Non-Reactive and Reactive Liquid Chromatography: Derivation of Analytical and Numerical Solutions Chromatography is an effective technique used in the analytical chemistry for separation, identification ...
Studies on Secondary Metabolites from Syzygium Aromaticum Linn. And Chemical Modification of Some Bioactive Indole Alkaloids

Sara (University of Karachi, Karachi, 2018)

The work compiled in the present dissertation consists of two parts, ‘‘Studies on secondary metabolites from Syzygium aromaticum Linn.’’ has been describe in part A, while part B describes the ‘‘Chemical modification of ...
A Study of Fuzzy Ag-Subgroups

, Amanullah (University of Malakand , Malakand, 2016)

The idea of fuzzy sets has opened new door of research in the world of contemporary Mathematics. The concept of fuzzy sets provided a new approach to model imprecision and uncertainty present in phenomena without sharp ...
Synthesis and Application of Mesoporous Silica Based Particles for Dechlorination of Trichloroehylene

Urooj, Afshan (Fatima Jinnah Women University, Rawalpindi, 2017)

Chlorinated organic compounds are released to the environment as a result of production, use and inefficient handling of these compounds. Such compounds are highly stable, toxic toward living organisms including humans and ...

Now showing items 461-480 of 6213

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