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Search Results: 1 - 10 of 461879 matches for " Ajaz A. "
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A Study of Network Based Mobility Management Schemes, 6LoWPAN Mobility, Open Issues and Proposed Solutions
Riaz A Khan,Ajaz Hussain Mir
Computer Science , 2014,
Abstract: Wireless Sensor Nodes (SNs), the key elements for building Internet of Things (IOT), have been deployed widely in order to get and transmit information over the internet. With the introduction of IPv6 over Low Power Wireless Personal Area Network (6LoWPAN), it is possible to connect these constrained devices to IPv6 Networks and transmit IPv6 packets. The sensor nodes are being deployed/installed on many objects and some of them are mobile (moving) including mobile gadgets, physical objects (living or non-living) etc. These mobile objects require sufficient Mobility Management Schemes to take care of data transmission. Host based mobility protocols; MIPv6 and its extensions are not suitable for these resource constrained devices. In this paper our focus is to study PMIPv6 based mobility management and different Scenarios based on it along with sensor devices. Existing research has made many improvements in terms of HO latency but less attention has paid towards signaling cost and packet loss particularly in time critical areas. The study provides the complete survey of network based mobility management schemes, 6LoWPAN mobility, challenges associated with them and solutions to meet these challenges.
Nuclear Transparency in the lightest nuclear interactions
M. Ajaz,M. K. Suleymanov,K. H. Khan,A. Zaman
Physics , 2012,
Abstract: Some experimental results on nuclear transparency effect in pC- and dC-interaction at 4.2 A GeV/c (JINR Dubna) are presented. The "half angle" ({\theta}1/2) technique was used and the particles with emission angle greater and less than {\theta}1/2 are considered separately. The results of the experimental study have been compared with the simulation data coming from the Dubna Cascade model. The values of average multiplicity, average momentum, and average transverse momentum of charged pions and protons are analyzed as a function of the number of identified protons in an event. We observed some behaviors for the data which could be considered as some nuclear transparency effects. The lasts have been divided into three main groups depending on their probable behavior: leading effect; cascade effect; medium effect.
Study of the behavior of nuclear modification factor in freeze-out state
M. Ajaz,M. K. Suleymanov,K. H. Khan,A. Zaman
Physics , 2013, DOI: 10.1088/1674-1137/37/2/024101
Abstract: One of the latest trends in the advancement of experimental high-energy physics is to identify the quark gluon plasma (QGP) predicted qualitatively by quantum chromodynamics (QCD). We discuss whether nuclear transparency effect which is considered an important phenomenon, connected with dynamics of hadron-nuclear and nuclear-nuclear interactions could reflect some particular properties of the medium. FASTMC is used for Au-Au collision at RHIC energies. Critical change in the transparency is considered a signal on the appearance of new phases of strongly interacting matter and the QGP.
Searching for the properties of nuclear matter using proton-carbon and deuteron-carbon collisions at 4.2 a gev/c
M. Ajaz,M. K. Suleymanov,K. H. Khan,A. Zaman
Physics , 2012, DOI: 10.1142/S0218301312500954
Abstract: The present work reports the use of nuclear transparency effect of protons in proton and deuteron carbon interactions at 4.2 A GeV/c to get information about the states of nuclear matter. The half angle technique is used to extract the information on nuclear transparency. The results are compared with Dubna version of Cascade model. The average values of multiplicity, momentum and transverse momentum of protons are analyzed as a function of the number of identified protons in an event. We observed some evidence and trends in the data which could be considered as transparency effect. Analysis of the results shows that the leading effect is the basis of the observed transparency. Some contribution to the observed effect could be the existing short range correlations and the scaling power law s^-N, for exclusive two body hard scattering.
PERCUTANEOUS TRANSVENOUS MITRAL COMMISSUROTOMY
AJAZ AHMAD
The Professional Medical Journal , 2007,
Abstract: Objective: To compare the clinical, echocardiographic and angiographicvariables after PTMC in patients of mitral stenosis having echo score < 8 and $ 8. Place of study: Cardiology wardand echocardiography department of the Punjab Institute of Cardiology, Lahore. Duration of study: The study wasconducted from 15 of January 2006 till 30 th th of July 2006.Study Design: It was a comparative study. Materials &Methods Two hundred consecutive patients of mitral stenosis undergoing PTMC were studied. Patients were dividedin to two groups. Group I consisted of patient having echo score <8, while Group II contained patients having echo score$8. Results:The immediate clinical follow-up of 200 patients who underwent PTMC procedure was studied. Patientswere divided into 2 groups, Echo-Sc <8 (n=136) and Echo-Sc$8 (n=64). PTMC resulted in an increase in mitral valvearea from 1.0±0.3 to 2.0±0.6 cm2 in patients with Echo-Sc<8 and from 0.8±0.3 to 1.6±0.6 cm2 in patients with Echo-Sc$8 (P<0.0001). Procedural success was 83.5% for the overall group, with patients with Echo-Sc <8 having a higherprocedural success (93.4% versus 62.5%; P<0.0001). Thirty three (16.5%) patients had unsuccessful procedures.There was 1(0.5%) in-hospital death. Severe post- PTMC MR ($3 grade) occurred in 19(9.4%) patients, with grade IIIin 12 (6%) and grade IV in 7(3.5%). Emergent MVR was required in 3(1.5%) of 200 patients. Pericardial tamponadeoccurred in 2(1%) patients. Thromboembolic events (stroke) occurred in 2(1%) patients in the overall population. Finally1(0.5%) patient developed complete atrioventricular block. Conclusions: Patients with echo score less than 8 havea favourable outcome in terms of procedural success and post procedure complications as compared to patients withecho score $8.
Idiopathic Hypereosinophilic Syndrome Presenting as IgA Nephropathy with Nephrotic Range Proteinuria  [PDF]
Tajamul H. Shah, Ajaz N. Koul, Sonaullah Shah, Umar H. Khan, Parvaiz A. Koul, Fayaz A. Sofi, Mufti S., Rafi Ahmed Jan
Open Journal of Nephrology (OJNeph) , 2013, DOI: 10.4236/ojneph.2013.32017
Abstract:

Idiopathic hypereosinophilic syndrome (IHES) is a disorder characterized by increased eosinophil count (eosinophilia) along with organ dysfunction secondary to organ infiltration of eosinophils and release of inflammatory markers [1-4], with no obvious cause for eosinophilia. The onset of symptoms is insidious in most of the cases and eosinophilia is detected incidentally. However, in others, the initial manifestations are severe and life-threatening due to the rapid evolution of cardiac or neurologic complications [5]. Renal involvement is rarely reported [6] in IHES. Herein we reported a case of IHES with predominant renal involvement as nephrotic syndrome with focal necrotizing IgA nephropathy.

Voltage Mode Universal Filter Using Current Differencing Buffered Amplifier as an Active Device  [PDF]
Sheikh Ajaz Bashir, Nisar Ahmed Shah
Circuits and Systems (CS) , 2012, DOI: 10.4236/cs.2012.33038
Abstract: Integrated filter circuit design resulted in desire for replacement of Inductors by active elements like Operational Amplifiers which led to the introduction of active filters. Active filter design has evolved over a period of time. Starting with OP AMPs, we have witnessed phenomenal growth of active component usage in filter design and development catering to varying requirements. This has contributed greatly in emergence of circuits with minimal limitations and advantages in terms of wide Bandwidth and High slew rates. Current Differencing Buffered Amplifier (CDBA) based active filter design has resulted in introduction of many novel circuits .This paper proposes a new Voltage-mode three input and Single output (TISO) multifunction filter based on single CDBA, four resistors and two capacitors. This second order filter circuit is capable of realizing various filter functions by choosing values of the three inputs variably. The natural frequency (ω0) can be tuned with passive components and the Q of the circuit is independent of (ω0) .The higher cascading capability of the circuit is ensured because of its low - output impedance. Further PSPICE-simulated results are in conformity with theoretical values.
Use of response surface methodology for development of new microwell-based spectrophotometric method for determination of atrovastatin calcium in tablets
Tanveer A Wani, Ajaz Ahmad, Seema Zargar, Nasr Y Khalil, Ibrahim A Darwish
Chemistry Central Journal , 2012, DOI: 10.1186/1752-153x-6-134
Abstract: The present research study describes the use of in optimization and validation of a new microwell-based UV-Visible spectrophotometric method of for determination of ATR-Ca in its tablets. By the use of quadratic regression analysis, equations were developed to describe the behavior of the response as simultaneous functions of the selected independent variables. Accordingly, the optimum conditions were determined which included concentration of 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ), time of reaction and temperature. The absorbance of the colored-CT complex was measured at 460 nm by microwell-plate absorbance reader. The method was validated, in accordance with ICH guidelines for accuracy, precision, selectivity and linearity (r2 = 0.9993) over the concentration range of 20–200 μg/ml. The assay was successfully applied to the analysis of ATR-Ca in its pharmaceutical dosage forms with good accuracy and precision.The assay described herein has great practical value in the routine analysis of ATR-Ca in quality control laboratories, as it has high throughput property, consumes minimum volume of organic solvent thus it offers the reduction in the exposures of the analysts to the toxic effects of organic solvents, environmentally friendly "Green" approach) and reduction in the analysis cost by 50-fold.Atorvastatin calcium (ATR-Ca); [(R-(R*,R*)]-2-(4-fluorophenyl)-β,δ,dihydroxy-5-(1-methylethyl)-3-phenyl-4-[(phenyl-amino)-carbonyl]-1H-pyrrole-1-heptanoic acid calcium salt (Figure 1), is a second generation synthetic 3-hydroxy-3-methylglutaryl-coenzyme A (HMG-CoA) reductase inhibitor [1]. It exerts its action by specifically inhibiting the HMG-CoA reductase, the enzyme that catalyzes the conversion of HMG-CoA to mevolanate, which is the early rate-limiting step in the biosynthesis of cholesterol in the body. ATR-Ca decreases the amount of LDL-cholesterol in the blood and also reduces blood levels of triglycerides and slightly increases levels of HDL-cholesterol. ATR
CURRENT FEEDBACK AMPLIFIER BASED VOLTAGE MODE MULTI FUNCTION FILTER
SHEIKH AJAZ BASHIR,N. A. SHAH,F.A.KHANDAY
International Journal of Engineering Science and Technology , 2012,
Abstract: Here we propose a new Voltage - mode biquadratic three input and Single output (TISO) multifunction filter based on two current eedback amplifiers (CFAs) four resistors and two capacitors. This second order filter circuit is capable of realizing various filter functions by choosing values of the three inputs variably. The natural frequency (ω0) can be tuned with passive components and the Q of the circuit is independent of the higher cascading capability of the circuit is ensured because of its low - output impedance. Further PSPICE-simulated results are in conformity with theoretical values.
ADHD presenting as recurrent epistaxis: a case report
Rather Yasir H,Sheikh Ajaz A,Sufi Aalia R,Qureshi Ateeq A
Child and Adolescent Psychiatry and Mental Health , 2011, DOI: 10.1186/1753-2000-5-13
Abstract: Epistaxis is an important otorhinolaryngological emergency, which usually has an apparent etiology, frequently local trauma in children. Here we present a case report wherein the epistaxis was recalcitrant, and proved to have a psychiatric disorder as an underlying basis. The child was diagnosed with Attention Deficit/Hyperactivity Disorder, hyperactive type, which led to trauma to nasal mucosa due to frequent and uncontrolled nose picking. Treatment with atomoxetine controlled the patient's symptoms and led to a remission of epistaxis.
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