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Search Results: 1 - 10 of 1773 matches for " Majid Almas "
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Numerical Study of Fluid Flow over Bundle Tubes  [PDF]
Majid Almas
Journal of Electronics Cooling and Thermal Control (JECTC) , 2016, DOI: 10.4236/jectc.2016.63010
Abstract: In this paper, a bank of tubes containing a flowing fluid which is immersed in a cross flow second medium of fluid with different temperature has been studied numerically using computational fluid dynamics. Laminar steady flow with a low Reynolds number has been studied in this work. Inlet mass flow rate and the bulk temperature are known and numerical method has been implemented to study the convective heat transfer to investigate the temperature and flow fields. Effects of different inlet bulk temperatures and mass flow rates have been investigated on temperature and pressure variations.
Almas Begum
The Professional Medical Journal , 1995,
Abstract: Prostaglandins E and F " cause cervical softening and bring about uterine contractions and are used to inducelabour or abortion being given by various routes. For the past few years 3 mg vaginal tablets of Prostaglandin2 E have become available in Pakistan. To assess the efficacy of this preparation in induction of labour in Pakistaniwomen, a prospective study was carried out in 50 patients: 40 multigravida 10 primigravidas. After ascertainingthe indication for induction and ruling out any contraindication to vaginal delivery, 3 mg vaginal tablet of2 prostaglandin E was placed in the vagina. If labour did not initiate, the tablet was repeated at six hour intervalsfor a total dose of 9 mg. There was significant softening of the cervix. Thirty one of the 40 multigravida andsix of the 10 primigravida delivered within 24 hours giving a success rate of 75% and 60% respectively. The2 authors conclude that induction of labour with prostaglandin E vaginal tablets is a safe and simple methodgiving a good success rate without undue side effects.
Almas Begum
The Professional Medical Journal , 1997,
Abstract: Objective: Comparison of ovarian follicular development using hMG stimulation with and without pituitarydownregulation by a GnRH analogue. Design: A prospective study. Setting: At The Infertility AdvisoryCentre, a private setup specializing in assisted methods of conception. Subjects: Sixty women selected toundergo in vitro fertilization (IVF) treatment for infertility for various indications. Methods: The patientswere alternately assigned to one of the two protocols of ovarian stimulation. The follicular development wasmonitored by serial vaginal ultrasonography and E2 estimations. Stimulation cycles with suboptimalresponse were canceled. Results: The patients in the two groups matched for age. In the completed cyclesof treatment follicular development was comparable in both the protocols with regard to size, number andE2 levels. Follicular growth in pituitary downregulated cycles was delayed but cycle cancellation rate waslower. Conclusion: hMG stimulation of ovaries with pituitary downregulation reduces the cycle cancellationrate but requiring longer administration of hMG increases the cost of treatment.
Kausar Almas
The Professional Medical Journal , 2001,
Abstract: OBJECTIVES: To compare the efficacies of wheat and gram bran diets while seeing their effectson serum glucose and some of the lipids in alloxan-induced diabetic rats. DESIGN:Comparative study. PERIOD: May 1997 to June 1997 (A total of 5 weeks). MATERIAL &METHOD: A total of 8 mixed-sex albino rats were made diabetic by injecting 5 percent alloxan,intra-peritonially. Rats were divided into 2 groups of 4 rats each and fed separately on 5 percent wheat andgram bran diets for one month. RESULTS: Serum glucose decreased by 66.3 percent, triglycerides 38.17percent, serum cholesterol 24.17 percent and faecal cholesterol 75.47 percent in rats fed on gram bransupplemented diet, while rats fed on wheat bran supplemented diet showed serum glucose decreased by 54.5percent, triglycerides 29.2 percent, serum cholesterol 16.26 percent and faecal cholesterol 69.09 percent.CONCLUSION: Results revealed that gram bran showed more serum glucose and lipids lowering actionas compared to wheat bran.
Analysis of the Magnetic Flux Density, the Magnetic Force and the Torque in a 3D Brushless DC Motor  [PDF]
Majid Pakdel
Journal of Electromagnetic Analysis and Applications (JEMAA) , 2009, DOI: 10.4236/jemaa.2009.11001
Abstract: As permanent magnet motors and generators produce torque, vibration occurs through the small air gap due to the alternating magnetic forces created by the rotating permanent magnets and the current switching of the coils. The magnetic force can be calculated from the flux density by finite element methods and the Maxwell stress tensor in cy-lindrical coordinates. In this paper the magnetic flux density, the magnetic force and the torque of a real three dimen-sional brushless DC motor are simulated using Maxwell 3 D V 11.1.
Economies of Scale in the Tunisian Industries
Ilham Haouas,Almas Heshmati
International Journal of Economics and Finance , 2012, DOI: 10.5539/ijef.v5n1p48
Abstract: To date, empirical investigations of trade liberalization, under the conditions of increasing returns to scale (IRS) and imperfect competition (IC), have either assumed or imposed the market and productive structures necessary for such a model. However, of the recent IRS/IC models used to simulate the effects of trade liberalization, none have empirically tested for the presence of increasing return to scale prior to the analysis. With Tunisian data (1971-2004) and rigorous test procedures, we investigate evidence of IRS at the industry level. Using an econometric approach based on the estimation of the translog cost function and its associated cost share equations, we identify the sectors characterized by increasing returns to scale. Analysis of the results shows that specification of the model is sensitive to inclusion of time trend representing technology. For most sectors, the model accounting for technology did not fit the data well.Estimation results without time trend interactions are different and most sectors show signs of increasing returns to scale.
Soil Loss Prediction (Using Rusle) and Comparison With Measured Soil Loss
Almas M.,T. Jamal
Pakistan Journal of Biological Sciences , 1999,
Abstract: The main objective of this study was to predict soil loss from various field experiments and to compare the results with measured soil loss from the field to see the performance of Revised Universal Soil Loss Equation (RUSLE) in predicting the soil loss. The results of this study showed that there was no significant difference in measured and predicted soil loss with the exception of few bare plots. Therefore it can be concluded that the RUSLE model has a potential to be used for predicting soil loss under different treatments and management practices in Malaysia. Its results are more accurate at high levels of erosivity. Only the improvement need is to estimate factor values for different annual crops, fruit crops and different crop and soil management practices used under Malaysian condition. Soil loss computed with RUSLE will be the best available estimates to be used for soil conservation planning.
Use of RUSLE for Soil Loss Prediction During Different Growth Periods
Almas M.,T. Jamal
Pakistan Journal of Biological Sciences , 2000,
Abstract: Revised Universal Soil Loss Equation (RUSLE) was used for soil loss prediction from the standard erosion plots of banana, pineapple, intercrop of banana-pineapple and bare plot. The results were compared with the measured soil loss for each growth period and as an overall experimental period of nine months. The results showed that for individual periods the soil loss was over-estimated for some treatments and under-estimated for some except for banana plot. For overall experimental period the average per cent deviation from measured soil loss was only 12 per cent . The chi-square test showed that the difference in measured and predicted soil loss was not significant. On these basis it can be said that RUSLE model can be used for soil loss prediction from banana-pineapple intercropping system in Malaysia.
Pneumorrhachis, pneumomediastinum, pneumopericardium and subcutaneous emphysema as complications of bronchial asthma
Manden Prasad,Siddiqui Almas
Annals of Thoracic Medicine , 2009,
Abstract: Pneumorrhachis (PR), or epidural emphysema, denotes the presence of air in the spinal epidural space. It can be associated with a variety of etiologies, including trauma; recent iatrogenic manipulations during surgical, anesthesiological and diagnostic interventions; malignancy and its associated therapy. It usually represents an asymptomatic epiphenomenon but also can be symptomatic by itself as well as by its underlying pathology. The pathogenesis and etiology of PR are varied and can sometimes be a diagnostic challenge. As such, there are no standard guidelines for the management of symptomatic PR, and its treatment is often individualized. Frequently, multidisciplinary approach and regimes are required for its management. PR associated with bronchial asthma is extremely rare, and only very few cases are reported in the literature. Here, we report a case of a 17-year-old Saudi male patient who is a known case of bronchial asthma; he presented with extensive subcutaneous emphysema, pneumomediastinum, pneumopericardium and pneumorrhachis as complications of an acute exacerbation of his primary ailment.
Alternative Composite Lisbon Development Strategy Indices: A Comparison of EU, USA, Japan and Korea
Almas Heshmati,JongEun Oh
The European Journal of Comparative Economics , 2006,
Abstract: This study addresses the measurement of two composite Lisbon strategy indices that quantifies the level and patterns of development for ranking countries. The first index is nonparametric labelled as Lisbon strategy index (LSI). It is composed of six components: general economics, employment, innovation research, economic reform, social cohesion and environment, each generated from a number of Lisbon indicators. LSI by reducing the complexity of the set of indicators, it makes the ranking procedures quite simple. The second and parametric index is based on principal component analysis. Despite the difference in the ranking by the two indices, it is shown that the United States outperformed most EU-member states. Our investigations also show evidence of significant dynamic changes taking place, as the countries of the Union struggle to achieve the Lisbon goals. The necessity of a real reform agenda in several old and new members and candidate countries emerges from our analysis. We briefly refer to two important European phenomena emerging from our data analysis and discuss the possible lessons learned from the Korean development strategy
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