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Search Results: 1 - 10 of 2211 matches for " Nayab Mahmood Sultan "
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Silicosis and Smoking: Intrinsic Phenomenon in the Respiratory System  [PDF]
Diemen Delgado Garcia, Nayab Mahmood Sultan, Oscar Ramirez Yerba, Sofia Jimenez Castro, Enmanuel Agila Palacios, Ashley Delgado Cano
Advances in Applied Sociology (AASoci) , 2018, DOI: 10.4236/aasoci.2018.810039
Abstract: Purpose of the Review: Some physiopathological mechanisms that could support the relationship between tobacco and silicosis have been postulated but exact pathogenesis remains unknown. Recent Findings: Local inflammation in workers with silicosis is a complex process characterized by an infiltration of inflammatory cells in the respiratory alveolus, accompanied by an increase in the expression of cytokines, chemokines, enzymes, growth factors and adhesion molecules. Although in smokers without silicosis a similar pattern of inflammation can be observed, in workers with silicosis this process seems to be characterized by more pronounced increases in structural damage in the lungs. Altered balance of innate and adaptive immunity both play key roles in the pathogenesis of extensive fibrosis in a molecular level, influenced by individual susceptibilities and genetic traits. Conclusion: The identification of the molecular mechanism and a potential protective genotype for silicosis opens a window for the eradication of this occupational respiratory disease. This should encourage us to continue exploring and searching for the relation between the genetic polymorphism and the inorganic silica particle.
Bangia atropurpurea (Roth)C.Ag Rhodophyta from nomal and naltar area near Gilgit, Pakistan
Sultan Mahmood Leghari
Pakistan Journal of Biological Sciences , 2000,
Abstract: The algal samples were collected from Nomal water channel and Naltar spring water about 20-25 km away from Gilgit on the right side of Hunza river. The fresh water red alga Bangia atopurpurea were identified along with association of 7 species of Chlorophyta, 9 of Cyanophyta, 6 of Bacillarophyta were recorded. Among these Chylorophyta was dominant.
RETINAL COMPLICATIONS
Muhammad Sultan Mahmood
The Professional Medical Journal , 2000,
Abstract: We studied the central and peripheral retinal lesions and their distribution in relation to age, sex and axiallength (AL) in patients of myopia greater than -6.00D. A total of 106 eyes of 53 patients with high myopiaunderwent detailed fundoscopy for central and peripheral retinal lesions. A-scan ultrasonography was doneto measure AL. Results were analyzed. Mean age was 31.00 years ranging from 14 to 65 years. Meanrefractive error was – 10.0D with a range of –6.0 D to 32.0 D. Crescent was found the most common (66%)central retinal lesion while white without pressure (WWP) was the most common (20%) peripheral retinallesion. Posterior vitreous detachment (PVD), chorioretinal atrophy (CRA), fuch’s spot, posterior staphylomaincreased with AL and age. WWP was inversely correlated with AL and age and was more common inmales. The high frequency of WWP in young patients when PVD has not yet developed and in eyes withmoderate AL suggests that these lesions are the result of vitreo-retinal tractions. The lattice is also anothercommon finding in pathologic myopia and tends to increase with age. It, however, remain unrelated to ALsupporting the idea of heredofamilial factors in its etio-pathogenesis.
INCIDENCE & PROPHYLAXIS OF CYSTOID MACULAR EDEMA
Muhammad Sultan Mahmood
The Professional Medical Journal , 2000,
Abstract: Cystoid macular edema (CME) is an important complication as a cause of reduced visual outcome afterextracapsular cataract extraction with posterior chamber lense implant (ECCE/PCL). OBJECTIVES:This paper reports the incidence of CME after ECCE with PCL implant, discusses it as a cause ofdecreased visual outcome and suggests measures for its prophylaxis. DESIGN OF STUDY ANDSETTING: A prospective study of 6 month duration (from March 1998 to September 1998) on 52patients was conducted at Ophthalmology department, Allied Hospital Punjab Medical College,Faisalabad. RESULTS: The incidence of CME after ECCE with PCL implant as a cause of unfavorablevisual outcome was found to be 1.92%. Four groups of patients were recognized in this study. The firstgroup (30.78%) included patients with visual acuity of 6/6 to 6/9 post operatively without correction. Thesecond group consisted of patients (67.3%) with visual acuity of 6/6 to 6/9 with the best possiblecorrection. The third group consisted of patients of visual acuity 6/12 or less with the best possiblecorrection and with CME as a cause of reduced VA and only one patient (i.e. 1.92%) fell in this group.The fourth group included patients with VA less than 6/12 with best possible correction but with otherexplainable causes of visual loss other than CME. None of the patient fell in this group. The single patientfalling in third group had visual acuity of 6/36 with the best correction. This patient on Fundoscopy and+90D biomicroscopy revealed cystoid macular edema in macular area. Fundus fluoresceine angiography(FFA) showed evidence of CME with leakage of fluoresceine around fovea, giving a typical flowerpattern. Thus this patient had clinically significant and angiographically proven CME. He was furtherfollowed and was treated with increased steroid therapy as a case of persistent CME. The 51 patients (i.e.98.08%) achieved a visual acuity of 6/9 to 6/6 at 12 postoperative week with or without correction.
Fresh Water Algae of Sindh. V. The Desmids from the lakes & ponds of Sindh, Pakistan
Sultan Mahmood Leghari
Journal of Biological Sciences , 2001,
Abstract: In the present survey Fifty nine taxa of Desmids representing 34 species, 7 var. and 4 forms of Cosmarium, 5 sp. and 3 var. of Euastrum, 2 species of Microsterias and 1 specie each of Arthrodesmus, Cosmocladium, and Staurastrum, were recorded from Riverian ponds , Bakar and Kinjhar lakes of Sindh. In which Cosmarium sub impressulum, C. regnelli, C. leave , C. impressulum, C. granatum, Euastrum bidentatum, E. dubium, E. spinolosum, Cosmocladium constrictum, Arthrodesmus convergens and Desmidium baileyii are very common planktonic speices through out the year.
No-wait Flowshop Scheduling Using Genetic Algorithm
Imran Ali Chaudhry,Sultan Mahmood
Lecture Notes in Engineering and Computer Science , 2012,
Abstract:
Fresh Water Algae of Sindh, VI. Charales (Charophyta) from Fresh and Brackish Water of Sindh, Pakistan
Sultan Mahmood Leghari,Anders Langangen
Journal of Biological Sciences , 2001,
Abstract: Fifteen Taxa representing 7 species of the Chara, 2 species of Ntella, and 1 species of lamprothaminum succinctum and Nitellopsis obtusa have been identified and described from fresh water lakes and ponds. It was noted that the species of chara are indicator of the presence of fish. These species were observed within pH 7.8 to 8.5 and total dissolved solids 260-580 mg/l. Chara globularis f.connivens R.D.W was present in kinjhar lake, while Nitellopsis obtusa was commonly found in kinjhar lake(Distt. Thatta) and Bakar lake (Distt Sanghar) at the depth of 3 - 20 feet.
Minimizing Makespan for Machine Scheduling and Worker Assignment Problem in Identical Parallel Machine Models Using GA
Imran Ali Chaudhry,Sultan Mahmood,Riaz Ahmad
Lecture Notes in Engineering and Computer Science , 2010,
Abstract:
Efficacy of Various Rhizobium Strains to Different Varieties of Groundnut (Arachis hypogea L.)
M. Aslam,S. Ahmad,I.A. Mahmood,T. Sultan
Pakistan Journal of Biological Sciences , 1999,
Abstract: Groundnut variety BARD-699 produced significantly the most promising yield than that of variety BARI-89 at Attock, Fatehjang and NARC, Islamabad. Rhizobium strains, NC-92 was found to be less efficient as compared to TAL-1000; TAL-1371. Nodule dry mass and number of pods per plant were much higher than that of control treatment. Although a significant difference in growth and yield of both the varieties due to Rhizobium inoculation was observed but on average basis TAL-1000 and TAL-1371 gave significantly better response for both the varieties in improving growth and yield at all sites. Nevertheless, future prospects for groundnut production are good in Pakistan if the farmers are realized to practice inoculation technology in their fields.
Efficiency of Three Weeds Control Methods Alone and in Combination with Farm Yard Manure in Potato
Muhammad Zaffar Iqbal,Muhammad Masud Mahmood,Sultan Ahmad Khan
Asian Journal of Plant Sciences , 2003,
Abstract: The efficiency of pre-emergence herbicide, post-emergence herbicide and hand weeding alone as well as in combination with farm yard manure (FYM) were studied in potato for three years. The emergence percentage was at the top (84.6) where pre-emergence herbicide was sprayed and FYM was not added followed by (84.3) hand weeding in which FYM was used. The uncontrolled weed plots gave an average of 535.8 g m ̄2 more fresh weeds weight than weeds controlled plots. The hand weeding plots gave an average of 58.9 g m ̄2 more fresh weeds weight than chemically weed controlled plots. The pre-emergence herbicide controlled plots yielded an average of 111.1 g m ̄2 more fresh weeds weight as compared to post-emergence herbicide controlled plots. The percentage of > 55 mm tubers was at the top (55.1) where post-emergence herbicide was sprayed and FYM was added followed by (50.2%) pre-emergence herbicide treated plots in which FYM was not added. The seed size (35-55 mm) tuber percentage was at the top (41.1) where weeds were not eradicated and FYM was not added followed by (40.8%) hand weeding plots in which FYM was added. The percentage of &35 mm tubers was at the bottom (11.2 ) where pre-emergence herbicide was sprayed and FYM was added. Weeds control by any methods increased potato yield an average of 7.983 t ha ̄1 (27.52%) than the uncontrolled weeds plots. The FYM increased an average of 3.687 t ha ̄1 (10.49%) yield in potato as compared to plots in which FYM was not applied. The chemically weed controlled methods produced an average of 4.482 t ha ̄1 (13.18%) more potatoes than hand weeding. The post-emergence herbicide, on an average basis yielded more potatoes than pre-emergence herbicide. The difference was 3.355 t ha ̄1 (9.11%) in the favour of post-emergence herbicide. On the basis of three years results post-emergence herbicide is recommended for effective weeds control and higher production.
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