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Search Results: 1 - 10 of 401240 matches for " M. Awais "
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Laplace Transform Method for Unsteady Thin Film Flow of a Second Grade Fluid through a Porous Medium  [PDF]
M. Ali, M. Awais
Journal of Modern Physics (JMP) , 2014, DOI: 10.4236/jmp.2014.53017

In this article, we have effectively used the Numerical Inversion of Laplace transform to study the time-dependent thin film flow of a second grade fluid flowing down an inclined plane through a porous medium. The solution to the governing equation is obtained by using the standard Laplace transform. However, to transform the obtained solutions from Laplace space back to the original space, we have used the Numerical Inversion of Laplace transform. Graphical results have been presented to show the effects of different parameters involved and to show how the fluid flow evolves with time.

Preliminary studies on the production of endo-1,4-β–Dglucanases activity produced by Enterobacter cloacae
AJ Sami, M Awais, AR Shakoori
African Journal of Biotechnology , 2008,
Abstract: We report the production and characterization of endo-β-1, 4-glucanase from isolated phytopathogenic bacterium Enterobacter cloacae. The bacterium was grown on different carbon sources including carboxymethyl cellulose (CMC) and 2% Avicel, for the production of endo-1, 4-β –D-glucanases enzyme. E. cloacae produced maximum levels of cellulases after 96 h of fermentation. Higher levels of endoglucanases were produced when microbe was grown on CMC. Endo-1, 4- β-D- glucanase had optimum pH and temperature of 5.8 and 40°C. The enzyme was inactivated by calcium chloride and a reducing agent β-mercaptoethanol.
Earlier surgical intervention in congenital heart disease results in better outcome and resource utilization
Roheena Z Panni, Awais Ashfaq, Muhammad M Amanullah
BMC Health Services Research , 2011, DOI: 10.1186/1472-6963-11-353
Abstract: A prevalence based cost of illness study design was used to estimate the cost of cardiac surgery (corrective & palliative) for congenital heart defects in children ≤ 5 years of age from June 2006 to June 2009. A total of 120 patients were enrolled after obtaining an informed consent and the data was collected using a pre-tested questionnaire.The mean age at the time of surgery in group A (1-12 mo age) was 6.08 ± 2.80 months and in group B (1-5 yrs) was 37.10 ± 19.94 months. The cost of surgical admission was found to be significantly higher in the older group, p = 0.001. The total number and cost of post-operative outpatient visits was also higher in group B, p = 0.003. Pre and post operative hospital admissions were not found to be significantly different among the two groups, p = 0.166 and 0.627, respectively. The number of complications were found to be different between the two groups (p = 0.019). Majority of these were contributed by hemorrhage and post-operative seizures.This study concluded that significant expenditure is incurred by people with CHD; with the implication that resources could be saved by earlier detection and awareness campaigns.The incidence of congenital heart disease (CHD) has experienced a dramatic increase from 4 to 5 per 1,000 live births [1] among older studies to 12 to 14 per 1,000 live births, reported in the recent literature [2]. With this, the diagnosis and treatment for pediatric and congenital cardiac disease has also undergone remarkable progress over the last 60 years [3]. In less privileged regions of the world, the unavailability and high cost of cardiac surgery makes it unaffordable for the families of these children. Factors like, late presentation of cases, associated co morbid conditions, understaffing of units and limited resources contribute to suboptimal outcome in those who undergo corrective surgery [4]. Approximately 60 per cent of patients with congenital heart disease die at less than two years of age [5,6].Due to
On Computations for Thermal Radiation in MHD Channel Flow with Heat and Mass Transfer
T. Hayat, M. Awais, A. Alsaedi, Ambreen Safdar
PLOS ONE , 2014, DOI: 10.1371/journal.pone.0086695
Abstract: This study examines the simultaneous effects of heat and mass transfer on the three-dimensional boundary layer flow of viscous fluid between two infinite parallel plates. Magnetohydrodynamic (MHD) and thermal radiation effects are present. The governing problems are first modeled and then solved by homotopy analysis method (HAM). Influence of several embedded parameters on the velocity, concentration and temperature fields are described.
Evaluation of Different Radish (Raphanus sativus) Genotypes under Different Saline Regimes  [PDF]
C. M. Ayyub, Muhammad Rashid Shaheen, Samad Raza, Muhammad Sarwar Yaqoob, Rashad Waseem Khan Qadri, Muhammad Azam, M. Awais Ghani, Imran Khan, Naheed Akhtar
American Journal of Plant Sciences (AJPS) , 2016, DOI: 10.4236/ajps.2016.76084
Abstract: An effective and simple screening technique for identification of salt tolerant and salt sensitive radish genotypes was observed. Sand is used as potting media. Six genotypes of radish were used for screening against four salinity levels (0, 1, 3, 5 and 7 dS/m-1). Twenty days old seedlings of radish were salinized with salt solution (NaCl). Morphological, physiological and ionic parameters were studied. Radish genotypes Laal-Pari and 40 Days executed the best performance in all the measured attributes and categorized as salt tolerant genotype while Green Neck was the poorest in retaining normal functioning at higher salinity levels thus grouped under salt sensitive cultivar.
The Professional Medical Journal , 2008,
The Professional Medical Journal , 2004,
Abstract: Introduction: Minimal access surgery has evolved enormously andrevolutionised surgical practice. With increasing use of Minimal access surgery, safety of methods of creatingPneumoperitoneum have come under intense scrutiny. Objectives: To observe the effectiveness and intraperitoneal events of using veress needle to create pneumoperitoneum in minimal access surgery. Study design:Prospective observational study. Period: From April to June 2004. Setting: Department of Surgery at Norfolkand Norwich University Hospital. Subject & Methods: 50 patients with male to female ratio 25:1 Veress Needle14G was inserted infra umbilically through stab incision at angle of 45 degree. BMI (body mass index) andabdominal thickness was recorded. Intra peritoneal events of flow of insufflated air, intraperitoneal position ofneedle and intraperitoneal adhesions were recorded. Results: (28/50) 56% of patients achieved free flow, (18/50)36% patients achieved free flow with traction. 44% of patients had free veress needle tip and 44% had tip inomentum, 8% patients showed extra peritoneal air collection. All patients were fit enough to be discharged sameday. Discussion: Our study has revealed that body mass index (BMI) and skin fold thickness does not effect theposition of needle. With skin fold thickness increase free flow of air needs to be assisted by traction of abdominalwall. Conclusion: We conclude that Veress needle can be safely used for creating pneumoperitoneum in patientsof any BMI and skin fold thickness.
Experimental and finite element simulation of formability and failures in multilayered tubular components
Y.T. Im,H.W. Lee,H.C. Lee,M. Awais
Journal of Achievements in Materials and Manufacturing Engineering , 2007,
Abstract: Purpose: of this paper is to review the research works carried out at the national research laboratory for computer-aided materials processing at the department of mechanical engineering at KAIST.Design/Methodology/approach: The research papers published so far from the laboratory were carefully reviewed and highlights for developing simulation tools for mesh generation, 2D or 3D finite element analyses for forging, shape rolling, solidification, semi-solid forging, compression molding of thermoset composites, injection molding without or with short fibers, and expert system for multi-stage axi-symmetric cold forging, extrusion, and multi-pass shape rolling are recaptured.Findings: According to this survey, the important issues involved with program developments and their industrial applications were revisited.Research limitations/implications: Understanding of material behaviour at various processing conditions and characterization of proper boundary conditions in terms of friction and temperature should be carefully made. Handling of complex geometry and computational efficiency for such geometry should be improved as well. Further development of three dimensional design systems should be necessary.Practical implications: Proper usage of the simulation tools and interface such tools with the automatic design system with the help of artificial intelligence will be very useful at the design stage of new manufacturing products and processes. In addition, proper understanding of deformation mechanics is of importance to properly utilize such numerical tools.Originality/value: Various aspects of limitations involved with program developments and their usage are identified and some important industrial applications demonstrated.
Flexible LDPC Decoder Architectures
Muhammad Awais,Carlo Condo
VLSI Design , 2012, DOI: 10.1155/2012/730835
Abstract: Flexible channel decoding is getting significance with the increase in number of wireless standards and modes within a standard. A flexible channel decoder is a solution providing interstandard and intrastandard support without change in hardware. However, the design of efficient implementation of flexible low-density parity-check (LDPC) code decoders satisfying area, speed, and power constraints is a challenging task and still requires considerable research effort. This paper provides an overview of state-of-the-art in the design of flexible LDPC decoders. The published solutions are evaluated at two levels of architectural design: the processing element (PE) and the interconnection structure. A qualitative and quantitative analysis of different design choices is carried out, and comparison is provided in terms of achieved flexibility, throughput, decoding efficiency, and area (power) consumption. 1. Introduction With the word flexibility regarding channel decoding, we mean the ability of a decoder to support different types of codes, enabling its usage in a wide variety of situations. Much research has been done in this sense after the great increase in number of standards, standard complexity, and code variety witnessed during the last years. Next-generation wireless standards such as DVB-S2 [1], IEEE 802.11n (WiFi) [2], IEEE 802.3an (10GBASE-T) [3], and IEEE 802.16e (WiMAX) [4] feature multiple codes (LDPC, Turbo), where each code comes with various code lengths and rates. The necessity for flexible channel decoder intellectual properties (IPs) is evident and challenging due to the often unforgiving throughput requirements and narrow constraints of decoder latency, power, and area. This work gives an overview of the most remarkable techniques in context of flexible channel decoding. We will discuss design and implementation of two major functional blocks of flexible decoders: processing element (PE) and interconnection structure. Various design choices are analyzed in terms of achieved flexibility, performance, design novelty, and area (power) consumption. The paper is organized as follows. Section 2 provides a brief introduction to LDPC codes and decoding. Section 3 gives an overview of flexible LDPC decoders classifying them on the basis of some important attributes for example, parallelism, implementation platforms, and decoding schedules. Sections 4 and 5 are dedicated to PE and interconnection structure, respectively, where we depict various design methodologies and analyze some state of the art flexible LDPC decoders. Finally, Section 6 draws
The Professional Medical Journal , 2011,
Abstract: Laparoscopic cholecystectomy is the gold standard treatment for patients presenting with acute gall stone disease necessitatinghospital admission. Objective: To assess the impact of timing of laparoscopic cholecystectomy on conversion rate, hospital stay and morbidity.Period: Jan 2008-2010. Setting: Department of Surgery, Independent University Hospital, Faisalabad. Study Design: Experimental study.Material & Methods: The subjects were included by consecutive sampling technique. 81 cases were divided into 3 groups. Group A (Surgerywithin 72 hrs of onset symptoms). Group B (surgery between 72hrs to 96 hours of onset of symptoms). Group C (surgery after 96 hours of onsetof symptoms). Results: The mean age was 41-95 years. Female to male ratio was 4.5:1. The overall complication rate was 12.69%. Meanhospital stay was 2.85 days. The open conversion rate was 8.64%. In group A the complication rate was 6%, group B 11.5% and group C 12.8&.The mean hospital stay and conversion rate had no significant difference. Conclusions: The timing of laparoscopic cholecystectomy has nosignificant impact on the conversion rate and length of hospital stay in cases with acute cholecystitis. However the complication rate was higherwhen surgery performed after 72 hours of onset of symptoms.
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