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Search Results: 1 - 10 of 135 matches for " Hameedullah Niazi "
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Genetics of Yield and Its Components in Upland Cotton (Gossypium hirsutum L.)
Mohammad subhan,M. Qasim,Riaz D. Ahmad,Hameedullah Niazi
Asian Journal of Plant Sciences , 2002,
Abstract: This study was conducted at Faculty of Agriculture, Gomal University, D. I. Khan, during 1996-99. Eight Upland cotton (Gossypium hirsutum L.) varieties were genetically analyzed to explore gene action controlling the phenotypic expression of yield of seed cotton plant-1 and lint percentage in all the generations. Additive type of gene action with partial dominance was observed for the characters mentioned in both the generations. Over dominance type of gene action was also explored specially for the character like yield of seed cotton plant-1 under study in F1 generation, which reflected the manifestation of heterotic effects.
Assessment of Genetic Mechanism in Some Important Quantitative Parameters in Upland Cotton (Gossypium hirsutum L.)
Mohammad Subhan,M. Qasim,Hameedullah Niazi,M. Ameen Khan
Asian Journal of Plant Sciences , 2002,
Abstract: Diallel cross analysis of eight parents of cotton (Gossypium hirsutum L.) was launched at Faculty of Agriculture, Gomal University, D.I.Khan, during 1996-99. Both additive and non additive effects were observed in case of number of bolls plant -1 in F1 generation, however only additive effects were significant in F2 generation. Significant additive and non additive effects were observed for boll weight in both the generations. The reciprocal differences were non significant for number of bolls plant -1 in both the generations, reflecting the absence of maternal effects or any other departure from simple autosomal inheritance. On the other hand significant reciprocal differences were concluded for boll weight, signifying the presence of maternal effects in F1 but non significant, suggesting the absence of maternal effects in F2 generation.
Graham Swift and the Ethical Self
Nozar Niazi,Siamak Niazi
Studies in Literature and Language , 2011,
Abstract: Ethical theories study the nature and criteria of right and wrong action, obligation, value and the good life, and the related principles. Peter Singer, in his book, Ethics simply states that 'Ethics is about how we ought to live.' (P-3) Graham Swift (born in 1949) is an English novelist whose work is tinged with contemporary ethical issues. He creates situations in which his characters look for better ways to relate to and with each other. These characters try to understand themselves, their place in a world that baffles them, and their relations to others. In this paper we will try to illustrate and discuss the various methods Swift’s characters adopt to wrestle with and at the same time address their contemporary problems. We will trace their problems back to modernity and its adoption of a philosophy or a system of thought that was purely rational and therefore uneven and incomplete. We will consider Swift’s work in general as postmodern with subjects and concerns reflecting some of the contemporary ethical and critical debates. We will also perceive and present Swift’s work as a response to the inadequacy of modernity and an attempt to come to terms with its shortcomings in the hope of an improved and wiser modernity. We will suggest that in Swift's work there is a visible progressive development from melancholia to mourning, meaning that Swift's latest characters are more prepared to accept their losses and move on towards a healthy mourning. We will see that in the modern epoch, which in the main, is not designed according to human values, Swift's characters endeavour to take charge of defining themselves, of writing their own stories, and their own values in their own ways. In order to sustain their identities, we will show that Swift's characters choose different methods, which, regardless of their consequences, may be considered ethically valuable and in harmony with human dignity. In order to tailor this study to the size of an article, we will be as concise as possible. In so doing, the main focus will be on Swift’s major novel, Waterland (1983) and his last two novels; Last Orders (1996), and The Light of Day (2003). Key words: Graham Swift; History; Modernity; Ethics; Self; Melancholia; Healthy mourning
EFFECT OF TOOL POLARITY ON THE MACHINING CHARACTERISTICS IN ELECTRIC DISCHARGE MACHINING OF SILVER STEEL AND STATISTICAL MODELLING OF THE PROCESS
DILSHAD AHMAD KHAN,,MOHAMMAD HAMEEDULLAH
International Journal of Engineering Science and Technology , 2011,
Abstract: Electric discharge machining (EDM) is a thermoelectric process in which electrical energy is converted into thermal energy and this thermal energy is used for the machining purpose. It is the common practice in EDM to make tool negative and work piece positive (direct polarity) , but researches shows that reverse of it is also possible in which tool is positive and work piece is negative ( reverse polarity), but not much work has been carried out on the reverse polarity till now. This paper discusses the effect of tool polarity on the machining characteristics in electric discharge machining of silver steel. High metal removal rate, low relative electrode wear and good surface finish are conflicting goals, which can not be achieved simultaneously with a particular combination of control settings. To achieve the best machining results, the goal has to be taken separately in different phases of work with different emphasis. A 32 factorial design has been used for planning of experimental conditions. Copper is used as tool material and Silver steel of 28 grade is selected as work piece material with positive and negative polarities. The effectiveness of EDM process with silver steel is evaluated in terms of metal removal rate (MRR), percent relative electrode wear (%REW) and the surface roughness (S.R) ofthe work piece produced at different current and pulse duration levels. In this experimental work spark erosion oil (trade name IPOL) is taken as a dielectric and experiments have been conducted at 50% duty factor. The study reveals that direct polarity is suitable for higher metal removal rate and lower relative electrode wear but reverse polarity gives better surface finish as compared to direct polarity. Direct polarity gives 4-11 times more MRR and 5 times less relative electrode wear as compared to reverse polarity, and reverse polarity gives 1.3-2.7 times better surface finish as compared to direct polarity. Second order regression model is also developed foroutput parameters.
EXPERIMENTAL INVESTIGATION OF MINIMUM QUANTITY LUBRICANTS IN ALLOY STEEL TURNING
L B Abhang,M. Hameedullah
International Journal of Engineering Science and Technology , 2010,
Abstract: To eliminate health and environmental problems caused by using conventional cutting fluid in the metal cutting industry, a new economical and practical approach to minimum quantity of lubrication machining technique is developed. Turning is a widely used metal removal process in manufacturing industry that involves generation of high cutting forces and temperature. Lubrication becomes critical to minimize the effects of these forces and temperature on cutting tool and work piece. Strained environment is a global problem. In metalcutting industry the use of coolant has become more problematic in terms of both employee health and environmental pollution. It is said that the use of coolant forms approximately 8-16 % of the total production costs. Development of lubricants that is eco-friendly and economically is acquiring importance. In this context, using minimum quantity of lubrication of boric acid mixed with base oil SAE 40 has proved to be a feasible alternative to the conventional cutting fluid. In the present work 10% boric acid by weight mixed with base oil SAE 40 is used as a MQL in turning process. Variations in cutting (lubricant) force, cutting temp, chip thickness and surface roughness are studied under different machining conditions. The results indicate that there is a considerable improvement in machining performance with MQL assisted machining compared to dry machining.
Statistical modeling of main cutting force produced by wet turning using soluble oil-water mixture lubricant
L B Abhang,M Hameedullah
Management Science Letters , 2011,
Abstract: In this paper, we present machining tests by turning En-31 steel alloy with tungsten carbide inserts using soluble oil-water mixture lubricant under different machining conditions. First-order and second-order cutting force prediction models were developed by using the experimental data by applying response surface methodology combined with factorial design of experiments. Analysis of variance (ANOVA) is also employed to check the adequacy of the developed models. The established equations show that feed rate and depth of cut are the main influencing factors on the cutting force followed by tool nose radius and cutting velocity. It increases with increase in the feed rate, depth of cut and tool nose radius but decreases with an increase in the cutting velocity. The predicted cutting force values of the samples have been found to lie close to that of the experimentally observed values with 95% confident levels. Moreover, the surface response counters have been generated from the model equations. Desirability function is used for single response optimization.
Power Prediction Model for Turning EN-31 Steel Using Response Surface Methodology
L. B. Abhang,M. Hameedullah
Journal of Engineering Science and Technology Review , 2010,
Abstract: Power consumption in turning EN-31 steel (a material that is most extensively used in automotive industry) with tungstencarbide tool under different cutting conditions was experimentally investigated. The experimental runs were planned accordingto 24+8 added centre point factorial design of experiments, replicated thrice. The data collected was statisticallyanalyzed using Analysis of Variance technique and first order and second order power consumption prediction models weredeveloped by using response surface methodology (RSM). It is concluded that second-order model is more accurate than thefirst-order model and fit well with the experimental data. The model can be used in the automotive industries for decidingthe cutting parameters for minimum power consumption and hence maximum productivity
Spectrophotometric simultaneous determination of uranium and thorium using partial least squares regression and orthogonal signal correction
Niazi, Ali;
Journal of the Brazilian Chemical Society , 2006, DOI: 10.1590/S0103-50532006000500029
Abstract: a simple, novel and sensitive spectrophotometric method was described for simultaneous determination of uranium and thorium. the method is based on the complex formation of uranium and thorium with arsenazo iii at ph 3.0. all factors affecting the sensitivity were optimized and the linear dynamic range for determination of uranium and thorium found. the simultaneous determination of uranium and thorium mixtures by using spectrophotometric methods is a difficult problem, due to spectral interferences. by multivariate calibration methods such as partial least squares (pls), it is possible to obtain a model adjusted to the concentration values of the mixtures used in the calibration range. orthogonal signal correction (osc) is a preprocessing technique used for removing the information unrelated to the target variables based on constrained principal component analysis. osc is a suitable preprocessing method for pls calibration of mixtures without loss of prediction capacity using spectrophotometric method. in this study, the calibration model is based on absorption spectra in the 600-760 nm range for 25 different mixtures of uranium and thorium. calibration matrices contained 0.10-21.00 and 0.25-18.50 μg ml-1 of uranium and thorium, respectively. the rmsep for uranium and thorium with osc and without osc were 0.4362, 0.4183 and 1.5710, 1.0775, respectively. this procedure allows the simultaneous determination of uranium and thorium in synthetic and real matrix samples with good reliability of the determination.
SCHOOL LEADERSHIP AND EDUCATIONAL PRACTICES IN PAKISTAN
Safia Niazi
Academic Research International , 2012,
Abstract: This research paper intends to understand the impact of leadership behaviors of principal with teachers on collaborative learning. Four hypotheses were developed to examine staff’sperformance, differences and relationships. Two survey instruments LPI & SPSLC were usedto collect data. LPI was scored using seven point Liker Scale. The location of the study was focused on 20 Government and 20 Private Schools of Karachi. Total score indicating a proper distribution in the self-ratings of the school principals and learning needs of teachers. The comparison data shows the level of mean differences among staff and heads which is greater than the critical value. The co relational data indicates that dimensions 1 to 4 are significantand negatively correlated; dimension 5 has no significance with any of the SPSLC descriptors.
FINE NEEDLE ASPIRATION CYTOLOGY (FNAC)
Shahida Niazi
The Professional Medical Journal , 2000,
Abstract: OBJECTIVES: To evaluate the diagnostic role of aspiration cytology in the preoperative management ofpatients with palpable breast lumps PATENTS & METHOD: A total of 510 Fine Needle Aspirations wereperformed on palpable breast masses. PERIOD: Jan - Dec 1999. SETTING: Department of Pathology,King Edward Medical College and Department of Pathology Allama Iqbal Medical College, Lahore.RESULTS: These included 497 (97.45%) female and 13 (2.54%) male patients. 148 aspirations (29.01%)were classified as malignant, 334 (65.49%) as benign, 11(2.15%) as suspicious and 17(3.33%) aspirates wereconsidered unsatisfactory for cytological diagnosis. 145 (29.17%) out of the total 497 female breastaspirations, and 3 (23.07%) out of 13(23.07%) male breast aspirations were classified as malignant.Fibrocystic Disease (24.54%) and Fibroadenoma (20.12%) were the most common benign female breastlesions followed by Pyogenic mastitis, tuberculous mastitis, galactocoele, traumatic fat necrosis etc. Benignmale breast lesions diagnosed by aspiration cytology included gynaecomastia, lipomas and tuberculousmastitis. CONCLUSION: FNAC is a simple sensitive & specific test for discriminating between benign& malignant lesions.
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