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Search Results: 1 - 10 of 18732 matches for " Iftikhar Ali "
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NUCLEOLAR ORGANIZER REGIONS IN NORMAL BONE MARROW
Iftikhar Ali
The Professional Medical Journal , 2000,
Abstract: The silver colloid technique for nucleolar organizer regions (AgNORs) was applied to bone marrow smearsin 20 cases of normal morphology marrow. The AgNORs were recorded in the form of ‘clusters’ and ‘dots’.Each developing cell type of myeloid and erythroid series revealed a different pattern of ‘clusters’ and ‘dots’.‘Clusters’ associated with proliferation while mature, non-dividing forms contained only ‘dots’. ‘Clusters’and ‘dots’ have different biologic significance and the method should be adopted while evaluating marrowsmears.
Hilfer fractional advection-diffusion equations with power-law initial condition; a Numerical study using variational iteration method
Iftikhar Ali,Nadeem Malik
Physics , 2014,
Abstract: We propose a Hilfer advection-diffusion equation of order $0<\alpha<1$ and type $0\leq\beta\leq1$, and find the power series solution by using variational iteration method. Power series solutions are expressed in a form that is easy to implement numerically and in some particular cases, solutions are expressed in terms of Mittag-Leffler function. Absolute convergence of power series solutions is proved and the sensitivity of the solutions is discussed with respect to changes in the values of different parameters. For power law initial conditions it is shown that the Hilfer advection-diffusion PDE gives the same solutions as the Caputo and Riemann-Liouville advection-diffusion PDE. To leading order, the fractional solution compared to the non-fractional solution increases rapidly with $\alpha$ for $\alpha > 0.7$ at a given time $t$; but for $\alpha<0.7$ this factor is weakly sensitive to $\alpha$. We also show that the truncation errors, arising when using the partial sum as approximate solutions, decay exponentially fast with the number of terms $n$ used. We find that for $\alpha< 0.7$ the number of terms needed is weakly sensitive to the accuracy level and to the fractional order, $n\approx 20$; but for $\alpha>0.7$ the required number of terms increases rapidly with the accuracy level and also with the fractional order $\alpha$.
Energy Metabolism and Allocation in Selfish Immune System and Brain: A Beneficial Role of Insulin Resistance in Aging  [PDF]
Ali Almajwal, Iftikhar Alam, Falak Zeb, Sadia Fatima
Food and Nutrition Sciences (FNS) , 2019, DOI: 10.4236/fns.2019.101006
Abstract: There is relatively limited knowledge concerning our understanding of how our immune system and brain take most of the available energy in a selfish manner to compensate for their own needs on priority in high energy demanding situations. The main objective of this review is to understand the energy allocation to immune system and brain in infections and/or fight or flight situations. The immune system and brain behave in a selfish manner as they allocate themselves majority of the total available energy. Insulin resistance (IR) is used as a tool for energy allocation by these systems. The immune system is activated as a response to stress and infection. Similarly, the brain gets activated as a response to any external environmental impulse, anxiety, and/or mental factor. These situations need to be dealt in a way to minimize their adverse health effects. The immune system and the brain in such situations need enormous energy for activation which is derived from the energy quota otherwise allocated to other organs. This maximum flux of energy towards these systems is achieved by making rest of the organs less responsive to insulin, a condition known as IR. As immune system and brain do not depend upon insulin for uptake of glucose, these systems are benefited from IR. IR is indicated as a beneficial role ensuring maximum energy allocation to these systems for improving health and well-being.
A novel method of dynamic permanent caching with resourceful built up and imperative access
Ijaz Ali Shoukat,,Mohsin Iftikhar
International Journal on Computer Science and Engineering , 2010,
Abstract: Caching is built up each time when the machine starts up according to user’s application usability. This built up procedure escalates the efficiency of application’s usage for the next coming access of sameapplication. This cache history is vanished when power is switched off. Most of the time, a user uses the same common applications in his/her daily routine, particularly during the working hours. Moreover, against every new start up, the user bears the penalty of cache rebuilt to achieve better and efficient access because on first time access, the application is opened without caching which results more time to open rather than the second time after the cache has already built up.This paper proposes a novel idea of intelligent andpermanent caching which can build up dynamically and can be stored permanently in one part of cache chip according to user’s application usability. This paper describes an algorithm that how CPU can build adynamic and intelligent Electrically Editable Permanent Cache (EEPC) according to the probability of user’s application usage in a computer machine. For proposed EEPC, we implement a Probability Calculation Table (PCT) by reusing available compression techniques and through introducing some basic change in cache storage policy. On the other hand L1 and L2 implementation is also the part of this study; for example, History Table (HT) is maintained for L1 and L1 is physically addressed to the main memory. Whereas, L2 is virtually addressed with the main memory and fully associative to handle misses. We mainly focus on Cache design enhancement, improvement in cache speed and implementation issues.
Adult B lymphoblastic leukaemia/lymphoma with hypodiploidy (-9) and a novel chromosomal translocation t(7;12)(q22;p13) presenting with severe eosinophilia – case report and review of literature
Farhat Bhatti, Iftikhar Hussain, Muhammad Ali
Journal of Hematology & Oncology , 2009, DOI: 10.1186/1756-8722-2-26
Abstract: Severe eosinophilia, defined as eosinophil count > 5000/μl, can be seen in helminthic infections, allergic disorders, lymphoproliferative disorders, chronic myeloid leukemia, and chronic eosinophilic leukaemia[1]. A history of allergic disorders, exposure to helminthic infestations, passage of worms in feces, drug intake, weight loss, fever, cough, diarrhoea and skin rash need to be complemented with proper clinical examination to delineate the likely cause of eosinophilia. Extensive investigations, which include stool examination, chest X Ray, ultrasound abdomen, CT scan, bone marrow aspiration/biopsy and cytogenetic studies, are required to know the etiology and differentiate between 'reactive' or 'clonal' eosinophilia.' Severe eosinophilia may occur several years before the onset of haematological malignancy, like in Hodgkin lymphoma[2], and may pose a diagnostic dilemma.Precursor B acute lymphoblastic leukemia with exaggerated eosinophilia is a rare entity with less than 50 cases reported since 1973, when it was first described by Spitzer and Garson [3,4]. In most patients, the characteristic feature of ALL with eosinophilia is the absence of blasts in the peripheral blood film. This could lead to delay in the diagnosis, if bone marrow aspiration is not done and the patient is started on steroid therapy. The most common cytogenetic abnormality encountered in acute lymphoblastic leukemia with eosinophilia is t(5;14), and is characterized by overproduction of IL-3 [5]. The latter entity is now included as 'B lymphoblastic leukemia/lymphoma with t(5;14); IL3-IGH' in new WHO classification of lymphoid neoplasms published in 2008 [6].In the following case report, diagnosis and management of a young male is discussed who suffered from precursor B acute lymphoblastic leukemia with severe eosinophilia, and a unique cytogenetic abnormality 45,XY,t(7;12)(q22;p13),-9, reported for the first time.A 31 years old male presented with history of aches and pains in whole body es
CATALYTIC THERMAL DECOMPOSITION OF POLYETHYLENE BY PYROLYSIS GAS CHROMATOGRAPHY
NISAR,JAN; ALI,MUKHTIAR; AHMAD AWAN,IFTIKHAR;
Journal of the Chilean Chemical Society , 2011, DOI: 10.4067/S0717-97072011000200006
Abstract: an experimental study of the thermal decomposition of polyethylene in an inert atmosphere has been carried out in the temperature range 300-800°c using shimadzu pyr-2a pyrolyzer for heating the sample. the method allows the accurate control and measurement of the pyrolysis temperature. the production of hydrocarbons and the corresponding monomers of these polymeric systems were monitored. the effects of variation of temperature, sample size, pyrolysis atmosphere, residence time and catalyst on the distribution of these products were studied. as the carrier gas rapidly swept the primary products from the hot zone into the chromatographic column, so the secondary decomposition is largely eliminated and the pyrolysis products give accurate information about the nature, composition and structure of the pyrolysis material.
ASSESSMENT OF INSTRUCTIONAL OBJECTIVES IN BOARDS’ EXAMINATION PAPERS IN PHYSICS: COGNITIVE DEVELOPMENT AT SECONDARY LEVEL IN PAKISTAN
Syed Iftikhar Hussain Jafri,Amjad Ali Arain
Academic Research International , 2012,
Abstract: In secondary schools in Pakistan, the pupils are provided with the concepts of physics at higher level and opportunities to do laboratory work and experiments. The survey of journals and periodicals of inter and intra country repute, revealed that from the pre and postimplementation of the new syllabus in Physics operative from the early seventies, no research realization of objectives was conducted although its need was felt. This study is intended to find out scientifically the coverage of objectives by Boards’ examination question papers in the first three aspects of cognitive development in the subject of Physics at Secondary Level in Sindh. A random sample of 280 school teachers working as examiners in the Board of Intermediate and Secondary Education (BISE) Hyderabad and of Secondary Education (BSE) Karachi was selected. The tool for determining the weightage of objectives was developed.This included an investigation of five years Physics question papers from (1997 to 2001) to classify the concepts of knowledge, understanding and application. The data were collectedthrough tool. It was found that there was imbalance in proportion of knowledge, understanding and application; it reflected inappropriateness and unsuitability of the weightage of the objectives covered by the paper setters. On the basis of the study findings,the question papers of both the Boards’ were found to be invalid and incapacitated to cover the objectives of physics at secondary level. As a result of this study, various suggestions were put forth to streamline the process for the coverage of objectives.
Study Pertaining to the Estimation of Variability, Heritability and Genetic Advance in Upland Cotton
Basharit Ali,Iftikhar Ahmad Khan,Khalid Aziz
Pakistan Journal of Biological Sciences , 1998,
Abstract: Four cotton varieties viz. 1517-75, D2-L-9-68, M-4 and CIM-240 were crossed in 4 x 4 complete diallel fashion. Means, coefficients of variability, broad sense heritability and genetic advance for various cotton plant traits were calculated. All the characters showed low coefficients of variability except yield of seed cotton and number of bolls per plant. Broad-sense heritability estimates were prominent for number of bolls per plant, boll weight and yield of seed cotton thus suggesting that improvement for these traits can be made through selection.
Bacteriology of Dead-in-Shell Broiler Embryos and Antibiotic Sensitivity of the Isolates
Mirza Ali Khan,Muhammad Ashfaque,Iftikhar Hussain
Pakistan Journal of Biological Sciences , 1999,
Abstract: Livers of 105 dead-in-shell embryos, randomly selected from three local hatcheries of Faisalabad were bacteriological examined. The occurrence of dead-in-shell was recorded to be 9.91 per cent (8.04 to 12.09%) positive liver samples of dead-in-shell embryos. A total of 118 bacterial isolates were obtained from the 87.62 per cent livers of dead-in shell embryos. The relative occurrence of different bacterial species were: Escherichia coli 52.54 per cent, Paratyphoid salmonellae 12.7 per cent, S. gallinarum 11.86 per cent. S. pullorum 5.93 per cent, Streptococcus faecalis 5.93 per cent, Bacillus subtilis 4.2 per cent, Pseudomonas aeruginosa 3.39 per cent and Proteus mirabilis 3.39 per cent. 28.26 per cent of positive samples yielded mixed growth of two different bacterial species and E. coli was found in all of these combinations. 91.94 per cent of the E. coli isolates were found Congo red positive. The in vitro sensitivity of the isolates to the 11 antibiotics were as: norfloxacin 100 per cent, gentamicin 89 per cent, flumequine 80 per cent, neomycin 68.64 per cent, chloramphenicol 67.80 per cent, streptopenicillin 65 per cent, erythromycin 14.4 per cent and furazolidone 13.5 per cent. Multiple drug resistance was observed among the isolates, particularly against the antibiotics frequently used in poultry.
Comparative Analysis of Automatic Vehicle Classification Techniques: A Survey
Kanwal Yousaf,Arta Iftikhar,Ali Javed
International Journal of Image, Graphics and Signal Processing , 2012,
Abstract: Vehicle classification has emerged as a significant field of study because of its importance in variety of applications like surveillance, security system, traffic congestion avoidance and accidents prevention etc. So far numerous algorithms have been implemented for classifying vehicle. Each algorithm follows different procedures for detecting vehicles from videos. By evaluating some of the commonly used techniques we highlighted most beneficial methodology for classifying vehicles. In this paper we pointed out the working of several video based vehicle classification algorithms and compare these algorithms on the basis of different performance metrics such as classifiers, classification methodology or principles and vehicle detection ratio etc. After comparing these parameters we concluded that Hybrid Dynamic Bayesian Network (HDBN) Classification algorithm is far better than the other algorithms due to its nature of estimating the simplest features of vehicles from different videos. HDBN detects vehicles by following important stages of feature extraction, selection and classification. It extracts the rear view information of vehicles rather than other information such as distance between the wheels and height of wheel etc.
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