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Search Results: 1 - 10 of 8093 matches for " Zaheer Ullah Khan "
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An Efficient Network Monitoring and Management System
Rafiullah Khan,Sarmad Ullah Khan,Rifaqat Zaheer,Muhammad Inayatullah Babar
International Journal of Information and Electronics Engineering , 2013, DOI: 10.7763/ijiee.2013.v3.280
Abstract: Large organizations always require fast and efficient network monitoring system which reports to the network administrator as soon as a network problem arises. This paper presents an effective and automatic network monitoring system that continuously monitor all the network switches and inform the administrator by email or sms when any of the network switch goes down. This system also point out problem location in the network topology and its effect on the rest of the network. Such network monitoring system uses smart interaction of Request Tracker (RT) and Nagios softwares in linux environment. The network topology is built in Nagios which continuously monitor all of the network nodes based on the services defined for them. Nagios generates a notification as soon as a network node goes down and sends it to the RT software. This notification will generate a ticket in RT database with problematic node information and its effect on the rest of the network. The RT software is configured to send the ticket by email and sms to the network administrator as soon as it is created. If the administrator is busy at the moment and does not resolve the ticket within an hour, the same ticket is automatically sent to the second network responsible person depending upon the priority defined. Thus, all persons in the priority list are informed one by one until the ticket is resolved.
catena-Poly[[[pentaaquacerium(III)]-μ-pyridine-2,4,6-tricarboxylato-κ4N,O2,O6:O6′] tetrahydrate]
Shahzad Sharif,Islam Ullah Khan,Samia Zaheer,Seik Weng Ng
Acta Crystallographica Section E , 2012, DOI: 10.1107/s1600536812015887
Abstract: The CeIII atom in the title compound, {[Ce(C8H2NO6)(H2O)5]·4H2O}n, is N,O,O′-chelated by the carboxylate trianion and is coordinated by five water molecules; a carboxyl O atom from an adjacent trianion bridges the CeIII atom, resulting in a chain running along the a axis. The nine atoms surrounding the metal atom comprise a tricapped trigonal-prismatic polyhedron. The coordinated and lattice water molecules interact with each other and with the carboxyl O atoms by O—H...O hydrogen bonds, generating a three-dimensional network.
Neuroblastoma in Saudi Children: A Single Center Experience (2006-2014)  [PDF]
Zaid Al Naqib, Atif A. Ahmed, Musa Al Harbi, Fahad Al Manjomi, Zaheer Ullah Khan, Awatif Alanazi, Othman Mosleh, Walid Ballourah, Mohammed Rayis
Journal of Cancer Therapy (JCT) , 2015, DOI: 10.4236/jct.2015.610098
Abstract: Introduction: Neuroblastoma is the most common extracranial solid tumor in childhood and survival rate has improved during the last few decades. Only a few studies, related to Neuroblastoma in Saudi Arabian children, have been performed. We report epidemiologic data and our clinical experience from the department of Pediatric Hematology Oncology (PHO), King Fahad Medical City (KFMC), Riyadh, Saudi Arabia. Method: A retrospective observational study of all patients, with diagnosis of Neuroblastoma, who attended PHO-KFMC from July 2006 to June 2014 was performed. The survival periods (overall survival and disease-free survival) and the final outcomes for patients treated and followed at KFMC were recorded. The survival data were statistically correlated with the clinical, pathological and biological features of patients and tumors and compared to national and international cohorts. Results: Eight-year data were available for the 42 patients of which 22 (52.4%) were male and 20 (47.6%) were females. Age at diagnosis ranged 0 - 91 months with a mean and median of 26.3 and 18.5 months respectively. 16 (38.1%) patients were under one year and 26 (61.9%) above 1 year of age. The event-free survival (EFS) and overall survival (OS) rates were 66.5% and 71.5% respectively. EFS and OS among those who were <1 year age at presentation was 75% and 82%, whereas ≥1 yr age group had 59% and 62% survival rates respectively. Patients with tumors in the adrenal had considerably lower EFS (59%) and OS (63%); in comparison to patients with tumors sites other than the adrenal who had EFS and OS of 85% and 89% respectively. Both EFS and OS survival rates at the end of follow-up interval were 100.0%, in the low and intermediate risk groups. In contrast, patients in the high risk group had EFS and OS rates of 44% and 48% respectively. This difference was statistically significant (p < 0.05). Conclusion: Our results are very encouraging and comparable with known published international cohorts, and reveal an excellent outcome for stage 1, 2, 3 & 4 s. The prognosis for advanced (stage 4) disease remains rather poor. A collaborative Saudi-wide effort, with an emphasis on research in detecting clinical and biologic characteristics of aggressive disease and tailoring therapy, is needed.
3-Ammonio-4-hydroxybenzoate monohydrate
Sami Ullah,M. Nawaz Tahir,Durre Shahwar,Zaheer-ud-Din Khan
Acta Crystallographica Section E , 2009, DOI: 10.1107/s1600536809017462
Abstract: The title compound, C7H7NO3·H2O, which crystallized as a hydrate, was obtained from an extraction of the plant species Saussurea atkinsonii of the asteraceae family collected from the hilly area (Ayubia) of Pakistan during the flowering season. The dihedral angle between the benzene ring and the carboxylate group is 25.64 (5)°. In the crystal, the packing is consolidated by N—H...O and O—H...O hydrogen bonds, as well as weak aromatic π–π stacking [centroid–centroid separation = 3.9365 (9) ] and C=O...π interactions.
Can Simple Preoperative Hemoglobin Testing Screen Symptomatic Anemia in Patients Undergoing Ambulatory Surgeries in Third World Countries?  [PDF]
Sobia Khan, Mueen Ullah Khan, Khalid Samad
Open Journal of Anesthesiology (OJAnes) , 2012, DOI: 10.4236/ojanes.2012.24034
Abstract: Background: Patients coming for ambulatory surgeries are mostly healthy adults and asymptomatic anemia in these patients is rare. According to international standards, perioperative period is not an appropriate setting to screen and investigate the cause of asymptomatic anemia, but in third world countries where iron deficiency is rampant, it is generally required as per local hospitals policy to test hemoglobin levels prior to any surgery in order to prevent morbidity. The purpose of our study is to look at the prevalence of anemia in patient undergoing minor elective ambulatory surgeries. Method: This was a cross sectional observational study conducted at tertiary care unit, Karachi, Pakistan. A total of 385 ASA-I (American Society of Anesthesiologist) and II patient’s age ranged 18 - 60 years, scheduled for day care surgical procedures were enrolled in the study. Results: Anemia was detected in 74 (19.2%) patients and its prevalence was found to be higher in females and in patients above 50 years of age. However, the presence of anemia did not have any influence on the perioperative outcomes or management. Conclusion: The routine preoperative hemoglobin testing does not have any effect on the perioperative outcomes in asymptomatic patients who are planned for elective day care surgeries.
Impact of Fiscal Variables on Economic Development of Pakistan
Zaheer Khan KAKAR
Romanian Journal of Fiscal Policy , 2011,
Abstract: The objective of this paper is to determine the impact of the fiscal variables on economic growth in Pakistan using time series data for the period 1980-2009. Cointegration and error correction techniques are used for this analysis and Granger causality test is used to determine the direction of causality. This study will provide help in determining the importance of fiscal policy for the development of Pakistan.
Effect of Agricultural Chemicals on Reptiles: Comparison of Pyrethroid and Organophosphate with Phytopesticide on Cholinesterase Activity
M. Zaheer Khan
Pakistan Journal of Biological Sciences , 2003,
Abstract: Experiments were carried out to find the effect of three pesticides cypermethrin (pyrethroid), malathion (organophosphate) and biosal (phytopesticide) on wildlife species of reptile Calotes versicolor. Two different concentrations i.e. 0.1 and 1% for cypermethrin and malathion and 25 and 50% for biosal were used. It was observed that cholinesterase activity decreased upto 27 and 54% in kidney and 20 and 35% in liver under the effect of cypermethrin. Under the effect of malathion cholinesterase decreased upto 58.46 and 65.09% in kidney and 30.27 and 66.97% in liver while under treatment of biosal cholinesterase activity decreased upto 13.06 and 18% in kidney and 39.52 and 52.61% in liver, respectively. The results are compared with those reported in the literature todate.
Model Farm Services Center Approach: An Implication to Boost Farmer’s Yield  [PDF]
Rehmat Ullah, Muhammad Zafarullah Khan, Kalim Ullah, Tahir Munir Butt
Agricultural Sciences (AS) , 2015, DOI: 10.4236/as.2015.69092
Abstract: The instant study was conducted to estimate the Model Farm Services Center’s (MFSC) contribution in yield improvement of major crops/vegetables in district Dera Ismail Khan, Khyber Pakhtunkhwa, Pakistan, during the year 2014-15. Based on Sekaran sampling technique 306 respondents were selected and were personally interviewed through well prepared and pre-tested interview schedule. To find out the actual performance of yield improvement by Model Farm Services Center along with other repressors, step by step analysis was performed. The results of Wilcoxon Sign Rank Test showed significant improvement in yield of sugarcane, wheat, maize, rice and tomato by Model Farm Services Center. Pearson’s correlation coefficient showed highly significant positive relation of sugarcane and wheat yield difference before and after Model Farm Services Center registration with MFSC. Ordinary Least Square Multiple-Regression Model indicates that MFSC registration duration and landholding significantly define the variation in dependent variables at 1% and 5% level of significance respectively for sugarcane yield. Whereas solely Model Farm Services Center registration duration profoundly highly significantly (P ≤ 0.01) explains the variation in dependent variables in wheat yield.
Correlation and Causality between Inflation and Selected Macroeconomic Variables: Empirical Evidence from Pakistan (1990-2012)  [PDF]
Mehwish Nawaz, Muhammad Naeem, Sami Ullah, Salim Ullah Khan
iBusiness (IB) , 2017, DOI: 10.4236/ib.2017.94011

Inflation is regarded as one of the most chronic problems in Pakistan and the recent surge of inflation (10.8) in consumer price index is a matter of serious concern in the economy [1]. Inflation imposes high cost on economies and societies; disproportionately hurts the poor and fixed income groups, creates uncertainty throughout the economy and undermines macroeconomic stability. It also results in inefficient resource allocation and hence reduces potential economic growth. High inflation has always penalized the poor. Lowering inflation therefore, directly benefits the low and fixed income groups. The present study focuses to examine the impact of various macroeconomic variables on inflation in Pakistan and to find their correlation and causal relationship with economic and econometric criterion by using time series data over the period of 1990 to 2012. To achieve this objective, regression analysis, correlation coefficient and granger causality test are used. Results from regression analysis indicate that money supply, government expenditure, government revenue, foreign direct investment and gross domestic product have positive impact on inflation in Pakistan, while interest rate shows negative impact. Correlation analysis confirms that there exists a positive association of inflation with money supply, government revenue, interest rate, foreign direct investment, gross

Exchange Rate Volatility in Pakistan and Its Impact on Selected Macro Economic Variables (1980-2014)  [PDF]
Madeeha Zamir, Amjad Amin, Sami Ullah, Salim Ullah Khan
iBusiness (IB) , 2017, DOI: 10.4236/ib.2017.94012
Abstract: Among the developing countries, Pakistan experienced a unique downward trend in rupee value and frequent transitions in the exchange rate systems. These distinctive features make Pakistan economy an interesting case study for the empirical examination of the rupee exchange rate and its role in the monetary policy and macroeconomic performance. The purpose of the present study is to find out which of the macroeconomic indicators has led the Pak-rupee exchange rate volatility during the study period. Furthermore, the effect of the exchange rate volatility on foreign exchange reserves and selected macroeconomic variables has also been studied in the framework of a regression approach. Time series annual data covering the period of 1980 to 2014 has been used for the empirical analysis. Augmented Dickey Fuller test has been used for checking the unit root in the data. Ordinary Least Squares method is used for the estimation of regression equations. For avoiding the problems of spurious relationship between the variables and series implications for the standard errors, various diagnostic tests have been applied. Initially study has taken exchange rate as dependent variable and some selected macroeconomic variables as independent variables. The result show that exchange rate has negative relationship with the variables such as inflation (INF), foreign direct investment (FDI), imports (IMP) and positive with
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