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Search Results: 1 - 10 of 725 matches for " Naveed Ahsan "
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Sedimentology of Marl and Marly Limestone Sequence of Upper Cretaceous Kawagarh Formation from Northern Kalachitta Range, Attock Hazara Fold and Thrust Belt, Pakistan  [PDF]
Saif Ur Rehman, Khalid Mehmood, Muhammad Fahad Ullah, Naveed Ahsan, Faisal Rehman, Tariq Mahmood, Mahboob Ahmed
Open Journal of Geology (OJG) , 2019, DOI: 10.4236/ojg.2019.91001
Abstract: Upper Cretaceous Kawagarh Formation is well exposed in the Attock Hazara Fold and Thrust Belt (AHFTB) and shows significant lateral and vertical variations in lithology. The present work deals with the sedimentological studies of marl and marly limestone sequence of Kawagarh Formation exposed at the Bagh Neelab, Ghariala north and Sojhanda villages in Northern Kalachitta Range. Detailed petrographic studies of marly limestone and hard marl substrate show that planktons and oysters are the main skeletal constituents of studied samples and clay and detrital quartz mainly composed the non skeletal fraction. X-Ray diffraction analyses of selected marl samples confirm the petrographic data. On the basis of skeletal and non skeletal content, two microfacies—marl microfacies and Planktonic microfacies are constructed. The faunal content, their paleoecology and detrital content of microfacies suggest that marl and marly limestone sequence of Kawagarh Formation was deposited over the mid and outer ramp settings.
In-Vivo Models for Management of Pain  [PDF]
Naveed Muhammad
Pharmacology & Pharmacy (PP) , 2014, DOI: 10.4236/pp.2014.51014
Abstract:

Natural products are mostly considered safe, effective and with fewer side effects. For testing the natural products for their analgesic potential various in-vivo methods are used including chemical induced methods and thermal induced method. In the present review article we have discussed various in-vivo paradigms along with their merits and drawbacks. This mini review will help pharmacologist in performing various analgesic experiments.

On the Effects of Complex Conjugate Medium on TM Scattering by a Strip  [PDF]
Amjad Imran, Ahsan Illahi
Journal of Electromagnetic Analysis and Applications (JEMAA) , 2011, DOI: 10.4236/jemaa.2011.37043
Abstract: In this paper, Method of Kobayashi Potential is used to determine the scattering behavior of a strip which is placed at the air-complex conjugate medium interface. And discussion is presented that how the complex conjugate medium mod-ify the scattering properties of the strip. A comparison is also given with that if we replace the conjugate medium with standard dielectric medium. E-polarized electromagnetic plane wave is supposed to be obliquely incident upon the ge-ometry. Scattered fields in both the half spaces are supposed in terms of unknown weighting functions. Discontinuous properties of Weber-Schafheitlin integral and orthogonal properties of Jacobi’s polynomials are used to determine these unknown weighting functions. Far scattered fields have been calculated using Saddle Point Method and computed for different parameters of interest.
Mammalian Fauna and Conservational Issues of the Baraiyadhala National Park in Chittagong, Bangladesh  [PDF]
Rezaul Karim, Farid Ahsan
Open Journal of Forestry (OJF) , 2016, DOI: 10.4236/ojf.2016.62011
Abstract: Mammals were studied at the Baraiyadhala National Park, Chittagong from August 2012 to July 2013. Twenty nine species of mammals belonging to 26 genera, 17 families and 9 orders were recorded. Of the recorded species, 2 were primates, 10 rodents, 1 lagomorph (hare), 5 chiropterans (bats), 1 manid, 7 carnivores and 3 ungulates. Rodentia appeared as the largest family contained 10 speices. The overall mammalian population density was 239.12/km2. Irrawardy squirrel (Callosciurus pygerythrus) scored the highest density (112.97/km2) and several species attained the lowest (1/km2 each). Local status (relative abundance) of mammals assessed where 15 (51.72%) species were rare, and according to National Conservation Status, 13 (44.82%) were remarked as threatened species of that area. There were some major threats to the park such as forest fire, encroachment of forest and forest edges by both tribal and landless people, illegal exploitation of forest resources, grazing of livestock and unavailable water reservoirs.
Distributed Analysis and Load Balancing System for Grid Enabled Analysis on Hand-held devices using Multi-Agents Systems
Naveed Ahmad,Arshad Ali,Ashiq Anjum,Tahir Azim,Julian Bunn,Ali Hassan,Ahsan Ikram,Frank van Lingen,Richard McClatchey,Harvey Newman,Conrad Steenberg,Michael Thomas,Ian Willers
Computer Science , 2004,
Abstract: Handheld devices, while growing rapidly, are inherently constrained and lack the capability of executing resource hungry applications. This paper presents the design and implementation of distributed analysis and load-balancing system for hand-held devices using multi-agents system. This system enables low resource mobile handheld devices to act as potential clients for Grid enabled applications and analysis environments. We propose a system, in which mobile agents will transport, schedule, execute and return results for heavy computational jobs submitted by handheld devices. Moreover, in this way, our system provides high throughput computing environment for hand-held devices.
Inflow Outflow Effect and Shock Wave Analysis in a Traffic Flow Simulation  [PDF]
Ahsan Ali, Laek Sazzad Andallah
American Journal of Computational Mathematics (AJCM) , 2016, DOI: 10.4236/ajcm.2016.62007
Abstract: This paper investigates the effect of inflow, outflow and shock waves in a single lane highway traffic flow problem. A constant source term has been introduced to demonstrate the inflow and outflow. The classical Lighthill Whitham and Richards (LWR) model combined with the Greenshields model is used to obtain analytical and numerical solutions. The model is treated as an IBVP and numerical solutions are presented using Lax Friedrichs scheme. Godunov method is also used to present shock wave analysis. The numerical procedures adopted in this investigation yield results which are very much consistent with real life scenario in terms of traffic density and velocity.
Some torsion theoretical characterizations of rings
Javed Ahsan
International Journal of Mathematics and Mathematical Sciences , 1984, DOI: 10.1155/s0161171284000302
Abstract: Rings whose torsion free modules are quasi-injective, quasi-projective or coflat have been characterized in the context of certain torsion theories.
Performance of Six Maize (Zea mays L.) Inbred Lines and Their all
Possible as Well as Reciprocal Cross Combinations

M. Ahsan
Pakistan Journal of Biological Sciences , 1999,
Abstract: The present work consisted of six elite, exotic and local maize inbred lines and their all possible as well as reciprocal cross combinations. This values of coefficients of variation were found to be lower for all agronomic traits except grain yield per plant (22.83%). Genotypic correlation coefficients had higher magnitude than the phenotypic correlation coefficients. Phenotypic correlation coefficients were found to significant and positive between leaf area, leaf angle, number of leaves per plant, plant height and grain yield. They were found negative and significant between days taken to tasseling, days taken to silking and grain yield. However, it is concluded from these results that grain yield can be improved by increasing leaf angle, leaf area, number of leaves per plant and plant height.
Role of Vocabulary for Semantic Interoperability in Enabling the Linked Open Data Publishing
Ahsan Morshed
International Journal of Database Management Systems , 2012,
Abstract: In spite of the explosive growth of the Internet, information relevant to users often unavailable even when using the latest browsers. At the same time, there is an ever increasing number of documents that varywidely in content, format and quality. The documents often change in content and location because they do not belong to any kind of centralized control. On the other hand, there is a huge number of unknown users with extremely diverse needs, skills, education, and cultural and language backgrounds. One of the solutions to these problems might be to use standard terms with meaning, this can be termed as controlled vocabulary (CV). Though there is no specific notion of CV, we can define it as a set of concepts or preferred terms and existing relations among them. In this paper, we focus on the role of CV for publishing the web of Data on the web.
Growth Opportunities, Earnings Permanence and the Valuation of Free Cash Flow
Ahsan Habib
Australasian Accounting Business and Finance Journal , 2011,
Abstract: This paper examines empirically the effect of firm growth opportunities and earnings quality on the market valuation of free cash flow, defined as the difference between operating cash flows and capital expenditures. Equity valuation theory prescribes that free cash flow should not be associated with stock returns because itdoes not add value. However, free cash flow could become a value-relevant construct in certain contexts. This study considers growth opportunities and transitory earnings as two such contexts and examines the valuation of free cash flow. An accounting-based valuation framework is developed where stock returns are regressed onfree cash flow interacted with growth and earnings quality proxies, after controlling for book values, dividends, and current earnings realisations. Findings reveal that firms with a positive free cash flow and attractive growth opportunities command a valuation premium. Furthermore, free cash flow is found to be positively associatedwith stock returns when earnings are transitory. The results are robust to alternative definitions of both free cash flow and growth opportunities.
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