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Search Results: 1 - 10 of 256 matches for " Abrar Shaukat "
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Unit Invariance as a Unifying Principle of Physics
Abrar Shaukat
Physics , 2010,
Abstract: A basic principle of physics is the freedom to locally choose any unit system when describing physical quantities. Its implementation amounts to treating Weyl invariance as a fundamental symmetry of all physical theories. In this thesis, we study the consequences of this "unit invariance" principle and find that it is a unifying one. Unit invariance is achieved by introducing a gauge field called the scale, designed to measure how unit systems vary from point to point. In fact, by a uniform and simple Weyl invariant coupling of scale and matter fields, we unify massless, massive, and partially massless excitations. As a consequence, masses now dictate the response of physical quantities to changes of scale. This response is calibrated by certain "tractor Weyl weights". Reality of these weights yield Breitenlohner-Freedman stability bounds in anti de Sitter spaces. Another valuable outcome of our approach is a general mechanism for constructing conformally invariant theories. In particular, we provide direct derivations of the novel Weyl invariant Deser--Nepomechie vector and spin three-half theories as well as new higher spin generalizations thereof. To construct these theories, a "tractor calculus" coming from conformal geometry is employed, which keeps manifest Weyl invariance at all stages. In fact, our approach replaces the usual Riemannian geometry description of physics with a conformal geometry one. Within the same framework, we also give a description of fermionic and interacting supersymmetric theories which again unifies massless and massive excitations.
The Professional Medical Journal , 2010,
Abstract: Objectives: To analyze the rate of Pneumothorax after CT guided TNAB of lung masses , and correlating it with the size of thelesion. Design: Descriptive study. Setting: Department of Radiology Mayo Hospital, Lahore. Period: From June 2002 to April 2003, Patientsand method: Seventy patients underwent CT guided FNA of the chest masses. Results: Out of Seventy, 18 patients i.e.; 26 % developedPneumothorax. Lesion less than 1 cm , out of 6 patients 3 developed pneumothorax ( 50 %), lesions 1-2 cm 5 out of 11 developedpneumothorax(45%), lesions with size of 2-3 cm 5 out of 14 patients developed pneumothorax ( 35%), lesions between 3-4 cm 2 out of 8developed pneumothorax (25%), lesion sized 4-5 cm 1 out of 15 developed pneumothorax (6%), and lesion with more than 5 cm size 1 out of 16 developed pneumothorax ( 6%) . Conclusion: The study shows that the rate of Pneumothorax after CT guided TNAB of Lung Massesincreases as the size of the lesion decreases.
The Professional Medical Journal , 2010,
Abstract: Objective: To know the findings of MDCT in cases of Abdominal Tuberculosis. Patients and Methods: Fifty eight patients withsuspicion of abdominal tuberculosis were scanned and the findings were evaluated. All the patients received IV and oral contrast. The patients were referred from the medical and surgical departments of Shalamar Hospital, Lahore. Toshiba 4 Slice Aquilion was used for scanning. The exclusion criterion was patients on Anti tuberculous drugs and urogenital tuberculosis. Results Following 6 findings were observed in 47 abnormal scans, Out of other 11 scans 9 had other diseases like diverticulitis, Appendicitis and Bowel Lymphoma. 2 were normal. Close medical and Surgical follow up was obtained in all cases. Ascites = 35, Omental / Mesenteric Thickening / Involving = 27, Small Bowel wall thickening = 07, Large bowel wall thickening including Caecal wall thickening = 06, Abdominal Lymphadenopathy= 26, Solid Organ Involvement, Liver=01, Spleen=02. Conclusion: Ascites was the most common finding in Patients with Abdominal Tuberculosis and Involvement of liver being the least common finding amongst the group.
Abrar Maqbool
The Professional Medical Journal , 2001,
Abstract: Intussusception is commonly discussed as a paediatric problem. A study of 34 cases is presented asencountered in a general surgical unit. Only 50% belonged to paediatric age group. M:F ratio is 2:1.50% had ileocaecal intussusception whereas 38% were of Ileoileal type. In isolated small bowelintussusception Meckel’s was responsible in 5 of 13 cases. 7 out of 34 cases had gangrene of gut. 2infants with ileo-caeco-colic intussusception were treated successfully with hydrostatic pressure usingbarium enema while another was found reduced at operation after the enema. All but two were explored.13 had simple operative reduction, 15 had resection anastomosis of gut whereas 4 had resectionexteriorization.
Abrar Maqbool
The Professional Medical Journal , 1995,
Abstract: A study of nine cases is presented who had previously undergone laparotomy but ended up having retainedforeign bodies. All nine were operated primarily elsewhere, four had emergency cesarian section, one hadintestinal surgery. The others had been operated for laminectomy, prostatectomy, herniorrhaphy and one hadan incision and drainage for injection abscess. Seven of them came back within six months of primary surgery,another presented months later with sub acute intestinal obstruction and one presented five years later withretention of urine. Four had complained of abdominal masses three had discharging sinuses one had sub acuteintestinal obstruction and another presented with vesical calculus. All were operated and recovery was uneventfulin all with no mortality.
Performance Evaluation to Enable Institutionalisation of Technology
Abrar Haider
Communications of the IBIMA , 2008,
Abstract: Technology implementation involves understanding of the structure of the technology, the reasons for choosing particular technology and its implementation approaches, assumptions about the context in which technology is to be used, and previous experiences with technology adoption. However, information systems implementation in engineering organizations generally disregards human, contextual, and organizational elements and is driven by the needs of individual departments rather than in response to the strategic needs of the entire organization. This paper presents an account of information systems implementation in a public sector transport organization. The case emphasizes the importance of ex-post or ex-ante evaluation of technology as well as the context of their implementation. It highlights that evaluation of information systems should not be treated as an isolated process, which is often left to auditors. In fact, it is a strategic activity that requires participation from a wider organizational community, which provides core justifications for investments in information systems as well as roadmaps for their implementation and institutionalization in the organization.
Dominant dimensions of two classes of finite dimensional algebras
Muhammad Abrar
Mathematics , 2012,
Abstract: The aim of this paper is to study the dominant dimension of two important classes of finite dimensional algebras, namely, hereditary algebras and tree algebras. We derive an explicit formula for the dominant dimension of each class.
The Professional Medical Journal , 2006,
Abstract: Objective: To evaluate the role of chemical sphincterotomy in the treatment of chronic anal fissure.To compare the effects of xylocaine gelly 5% with GTN 0.2%. Design: Comparative study. Setting: Outdoor andEmergency Department of Surgical unit II and III of Sir Ganga Ram Hospital Lahore Period During the year 2004Methods and materials: 40 patients of chronic anal fissure were included in study and was divided in a randomizedmanner into two groups and the effects, out come and side effects of the Xylocaine 5% and GTN 0.2% were noted,while treating the patients of chronic anal fissure. Results: At 4 weeks only 2 patients of Group A (xylocaine 5%)showed healing evidence while 8 patients of Group B (GTN 0.2%) had shown the healing of the anal fissure. At the endof the 6 weeks a total of 4 patients of Group A showed healing while in case of Group B 14 patients had shown thehealing of the anal fissure. Conclusion: Our study suggests that topical GTN produces successful chemicalsphincterotomy. It not only helps in relieving pain but also promotes healing of fissure. Lignocaine may help in relievingpain but it is not effective in healing of fissure.
The Professional Medical Journal , 2005,
Abstract: Background: Haemorrhoids is a common disease effecting peopleof all ages and both sexes. Though there is a consensus on the treatment of 3rd and 4th degree haemorrhoids, thereis still confusion regarding the ideal treatment for 1st and 2nd degree haemorrhoids. Objectives: To compare theInjection sclerotherapy and the Daflon for the management of the 1st and 2nd degree haemorrhoids. Design: Prospectivestudy Setting: OPD for Surgery in Sir Ganga Ram Hospital Lahore, Period: From June 2003 to July 2004, Materialand Method: 50 patients of having 1st and early second degree haemorrhoids, presenting in surgical out door, wererandomly subjected to Injection Sclerotherapy and Daflon 500, and outcome of the two groups was compared, regardingimprovement in their presenting complaints and associated symptoms as well as side effects of the treatments. Results:22 patients of Injection sclerotherapy were cured, while in case of Daflon group 18 patients were cured from theirpresenting complaints. Conclusion: our study shows that both the Injection Sclerotherapy and the Daflon are goodmanagement options for 1st and 2nd degree haemorrhoids as out door based treatment.
The Professional Medical Journal , 2005,
Abstract: Objective: To determine the affect of autonomy on clinical chemicaltesting in pathology department Quaid-i-Azam Medical College and to assess the change in the attitudes oflaboratorians and physicians Study design: Retrospective and comparative. Duration of study: 1-11-93 to 01-11-03Materials and Methods: A retrospective study was carried out from 1-11-93 to 01-11 03 in which records from 1-11-93to 1-11-03 were collected and evaluated .Separate record of each month’s revenue from clinical chemistry section wascalculated. In order to determine what changes have been brought about after autonomy a universal questionnairewas used to assess the attitudes of physicians and surgeons of hospital inquiring whether they noticed anyimprovement in the efficiency of clinical chemical test results after autonomy. 620 doctors were interviewed throughstructured questionnaire. The questionnaire was designed to assess the knowledge , attitude and practices of doctorstowards autonomy. In order to determine that who is the most beneficent of autonomy ,different records werecollected. and discussions were made with consultants. Results: Autonomy brought about a healthy change in the staffof clinical chemical section. Quality control has improved the morale of lab staff since technical deviations are morereadily identified and corrected within the lab, gross errors are rarely found by the clinicians and so their respect forand confidence in the lab has strengthened Replenishment of chemicals/reagents are timely made. The number ofavailable test has significantly increased which in turn has significantly raised the revenue generated since autonomy is awarded. Pilferage of chemicals has been stopped. Turn around time has been decreased. Clinical Chemical sectionparticipates in External Quality Assessment Scheme, NEQAPP (National External Quality Assessment ProgramPakistan),which is an essential part of the routine of a well –run lab. Patient is the most beneficent since autonomy isawarded to QMC/BVH, BWP. Conclusions: A significant improvement in the efficiency of the analytical performancehas strengthened the faith of laboratorians and physicians in the test results after autonomy.
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