Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99


Any time

9 ( 1 )

2019 ( 120 )

2018 ( 226 )

2017 ( 255 )

Custom range...

Search Results: 1 - 10 of 23840 matches for " Syed Waqar Ali Shah "
All listed articles are free for downloading (OA Articles)
Page 1 /23840
Display every page Item
Smith Normal Form of Matrices Associated with Differential Posets
Syed Waqar Ali Shah
Mathematics , 2015,
Abstract: We prove a conjecture of Miller and Reiner on the Smith Normal Form of the operator $DU_{n}$ associated with a differential poset under certain conditions. We do so by proving that the conjecture is equivalent to the existence of a certain decomposition of the $ \mathbb{Z}[x]$-module $ (\mathbb{Z}^{p_{n} }, DU_{n}) $, similar to the invariant factor decomposition of $ \mathbb{Q}[x]$-modules. We then use our result to verify the conjecture in certain special cases.
Anthelmintic and relaxant activities of Verbascum Thapsus Mullein
Niaz Ali, Syed Ali Shah, Ismail Shah, Ghayour Ahmed, Mehreen Ghias, Imran Khan, Waqar Ali
BMC Complementary and Alternative Medicine , 2012, DOI: 10.1186/1472-6882-12-29
Abstract: V. thapsus extracts were tested against roundworms (Ascaridia galli) and tapeworms (Raillietina spiralis). Each species of worm was placed into a negative control group, an albendazole treatment group, or a V. thapsus treatment group, and the time taken for paralysis and death was determined. In addition, relaxation activity tests were performed on sections of rabbit's jejunum. Plant extracts were tested on KCl-induced contractions and the relaxation activities were quantified against atropine. V. thapsus calcium chloride curves were constructed to investigate the mode of action of the plant extracts.We detected flavonoids, saponins, tannins, terpenoids, glycosides, carbohydrates, proteins, fats and fixed oils in V. thapsus. For both species of worm, paralysis occurred fastest at the highest concentration of extract. The relative index values for paralysis in A. galli were 4.58, 3.41 and 2.08, at concentrations of 10, 20 and 40 mg/ml of plant extract, respectively. The relative index for death in A. galli suggested that V. thapsus extract is wormicidal at high concentration. Similarly, the relative indexes for paralysis and death in R. spiralis suggested that the extract is a more potent wormicidal agent than albendazole. The mean EC50 relaxation activity values for spontaneous and KCl induced contractions were 7.5 ± 1.4 mg/ml (6.57-8.01, n = 6) and 7.9 ± 0.41 mg/ml (7.44-8.46, n = 6), respectively. The relaxation activity of the extract was 11.42 ± 2, 17.0 ± 3, 28.5 ± 4, and 128.0 ± 7% of the maximum observed for atropine at corresponding concentrations. The calcium chloride curves showed that V. thapsus extracts (3 mg/ml), had a mean EC50 (log molar [calcium]) value of -1.9 ± 0.06 (-1.87 - -1.98, n = 6) vs. control EC50 = -2.5 ± 0.12 (-2.37 - -2.56, n = 6), whereas the verapamil (0.1 μM) EC50 was -1.7 ± 0.1 (-1.6 - -1.8, n = 6) vs. control EC50 = -2.4 ± 0.09 (-2.3 - -2.47, n = 5).Our results suggest that V. thapsus, which is currently used by some tribes in the Ma
The Professional Medical Journal , 2011,
Abstract: Know the functional outcome of Intramedullary Kirschner Wire fixation of unstable Radius-Ulna fractures inchildren. Study Design: Descriptive study. Period: 27/03/2009 to 26/03/2010. Setting: Department of Orthopedic and Trauma, KhyberTeaching Hospital, Peshawar. Patients and Methods: All patients were admitted from OPD . Children less than 16 years with Unstable Radius-Ulna fractures were included in the study. Patients with open fractures and adults with polytrauma were excluded from the study. UnstableRadius-Ulna fractures were treated by Intramedullary Kirschner Wire fixation under general anesthesia and tourniquet control. Follow up tillradiological and clinical union was done. K-wires were removed after healing of fractures. Patients were assessed functionally andradiologically and results were graded according to Price et al Criteria. Results: A total of 64 children with unstable radius and ulna fractureswere included in the study. The age range was 6 to 15 years with average age of 10.41 years. 47 were male and 17 were female. The averagetime of radiological union was 7 weeks and K-wires were removed at 8 weeks time. At final assessment there were 47 Excellent, 10 Good and 7Fair results. Conclusions: Excellent results can be achieved by Intramedullary K-Wires fixation. In children with unstable Radius-Ulnafractures. It should be the method of choice for treating these fractures.
Tutorial Accounting Fundamentals: A New Look of British and American Accounting System  [PDF]
Nousheen Tariq Bhutta, Syed Zulfiqar Ali Shah
Open Journal of Accounting (OJAcct) , 2013, DOI: 10.4236/ojacct.2013.21004
Abstract: This paper aims to highlight the perception of graduate and undergraduate students regarding accounting fundamentals across British system and American system. The design of this paper is to derive a unique model which proves the both approaches are in same sense however, they are framed differently. Moreover, it provides a good justification of basic questions like why income and expense are treated as credit side and debit side of trading profit and lossaccount, respectively. Ultimately, it helps educators/instructors in influencing the perceptions of their students with regard to different accounting systems.
Corporate Entrepreneurship and Agency Cost: A Theoretical Perspective  [PDF]
Syed Zulfiqar Ali Shah, Nousheen Tariq Bhutta
Open Journal of Accounting (OJAcct) , 2013, DOI: 10.4236/ojacct.2013.23010
Abstract: The study aims to fill the gap in literature by ascertaining the link between corporate entrepreneurship and agency cost. It presents conceptual framework between corporate entrepreneurship and agency cost, on the basis of their theoretical background. Being a prelude endeavour, it provides a keystone for future studies.

Investors’ Reaction to the Implementation of Corporate Governance Mechanisms  [PDF]
Nousheen Tariq Bhutta, Syed Zulfiqar Ali Shah
Open Journal of Accounting (OJAcct) , 2014, DOI: 10.4236/ojacct.2014.31002
Abstract: The study investigates the impact of corporate governance on investor reaction. This is the first study till date that addresses this gap in literature. The design of the study comprises of corporate governance, investor reaction. Data was taken from 125 non-financial sector of Pakistani companies listed at KSE for the period of 2005-2010. Data was extracted from balance sheet analysis (SBP report), KSE website and annual reports of companies. Correlation (individual and composite) and linear regression tests were applied to validate the outcomes. The results confirm that there is no impact of corporate governance on investor reaction and relationship between them is negative. This implies the inefficiency of financial market where noise trades create sentiment.
Study on the Estrous Cycle Regularity of Cryopreserved Rat Ovarian Tissues after Heterotopic Transplantation  [PDF]
Rumana Jafarey, Syed Ali Rehan Shah Jaffri
Open Journal of Obstetrics and Gynecology (OJOG) , 2016, DOI: 10.4236/ojog.2016.65037
Abstract: Objective: To evaluate the re-initiation of ovarian function in cryopreserved ovarian grafts by means of vaginal smear of transplant rats. Methods: A total of 40 SPF-SD female rats (5 - 6 week-old) were randomly divided into three groups (blank control, castration control and transplant group). Ovaries were removed by surgical procedure then after cryopreservation and thawing procedures the ovarian tissues pushed inside the back muscles gap in transplant group. On the first PO day, vaginal smear collection was daily initiated. After 30 days, the PO day when the estrous cycle was re-initiated was considered for analysis as well as the estrous days and the number of estrous cycles. Results: Normal control group had a regular estrous cycle, while the transplant group had an estrous cycle disorder within first 2 weeks and later 2 weeks after the transplantation while the duration of diestrus cycle lasted longer. At the same time, the castration group had lost the normal estrous cycle, keeping continue in the stage of diestrus. Conclusion: In transplanted animals the re-initiated ovarian function can be predicted with alteration between estrous and diestrus phases with predominant estrous irregularity. Moreover, short autotransplanted graft duration needs time to perfuse by new blood vessels and hormone secretions, so could not directly affect its target organs to function properly.
Re-Use of Hospital Plastic Waste in Asphalt Mixes as Partial Replacement of Coarse Aggregate  [PDF]
Syed Shahan Ali Shah, Rawid Khan
Open Journal of Civil Engineering (OJCE) , 2016, DOI: 10.4236/ojce.2016.63032
Abstract: About 1.3 billion tons of waste is being generated in the world annually. This waste is a cause of various diseases. Open dumping of waste also destroys valuable agricultural land. Various researchers have beneficially used plastic waste in cement concrete and asphalt concrete in the past. This study aims at the use of aggregates, made from different types of plastic waste, as partial replacement of coarse aggregates in asphalt mixes. For this purpose waste is collected from different hospitals of the city. Sorted plastic from the waste consists of 64% low density polyethene, 32% high density polyethene and 4% of polypropylene. Plastic waste is shredded, heated and after cooling, pulverizes manually and mechanically. Specific gravity of plastic aggregates is 0.96. Water absorption and soundness values are 4.68% and 7.68% respectively. Impact, crushing and Loss Angeles values of plastic aggregates are 0.7%, 0.5%, and 1.1% respectively. Replacement of natural aggregates by plastic aggregates in asphalt mixes is done up to 25% with 5% incremental increase. Density of asphalt mixes decreases to 2060 kg/m3. Consequently flow increases to 5.73 mm. Maximum stability is at 20% replacement i.e. 34.57 KN. Cost analysis of the study indicates that 205% increase in stability are observed with 219% increase in cost.
Convex Phillips Curve Explaining Openness and Inflation Nexus  [PDF]
S. Ali Shah Syed, Helène Syed Zwick
Theoretical Economics Letters (TEL) , 2015, DOI: 10.4236/tel.2015.56086
Abstract: We study the theoretical nexus between inflation and trade openness in the presence of a non-linear Phillips curve. Phillips curve explains the inverse relationship between unemployment and inflation; however, the open economy macroeconomic models usually propose that the slope of the trade-off should be related to the extent of trade openness. The role of openness as a check on inflation has recently attracted attention of many [1]. The parallelism between the recent globalization wave and the fall in inflation has led to a perception that the determinants of the slowdown in inflation were not only the domestic ones but could partly be due to increased trade openness. This study describes this relationship considering a non-linear Phillips curve. Using the conventional Phillips curve approximated by Cobb-Douglas model we confirm the earlier observations regarding the existence of a significant impact of openness on inflation. The interesting contribution of this study is not only to establish the trade-openness and inflation nexus but also to identify the relevant channels through which openness impacts inflation. Our model predicts that in the current scenario of increased openness a non-linear symmetric loss function may still prevail, but for the policy purposes it necessitates to consider domestic and foreign propensities to import and the exchange rate sensitivity to inflation. In addition, the integration of the international markets would result into an even more important role of exchange rate dynamics as a response to the rising international trade. We find that in the presence of a convex Phillips curve any upward variation in the foreigners’ propensity to import would place a downward pressure on domestic inflation, provided that the current and the lagged rate of unemployment are less than minimum unemployment rate. Our model, while assessing the short run dynamics, also suggests that increased openness results into a complex divide among different economies, due to their sizes and structures. Investigating such a relationship as an extension of this study for different economic groups could reveal further interesting facts.
Oil Price Shocks and the US Stock Market: Slope Heterogeneity Analysis  [PDF]
Sarfaraz Ali Shah Syed, Hélène Syed Zwick
Theoretical Economics Letters (TEL) , 2016, DOI: 10.4236/tel.2016.63055
Abstract: This study investigates the oil and stock prices nexus in the US economy over the period 1980-2016. Using breakpoint regression technique, our findings are twofold: 1) we confirm the existence of the nexus as established in the existing literature on the subject; 2) while the relationship between the oil and stock prices remains intact, the slope changes over time, thus identifying a non-linear relationship.
Page 1 /23840
Display every page Item

Copyright © 2008-2017 Open Access Library. All rights reserved.