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Search Results: 1 - 10 of 11 matches for " Awhad Mueed "
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Laparoscopic Surgery for Meckel’s Diverticulum Presenting as Small Bowel Obstruction: A Case Report  [PDF]
Mushtaq Chalkoo, Mumtaz-Din Wani, Hilal Makhdoomi, Ankush Banotra, Yassar Arafat, Awhad Mueed, Syed Shakeeb
Surgical Science (SS) , 2016, DOI: 10.4236/ss.2016.711067
Abstract: Meckel’s diverticulum is not commonly encountered surgical entity and presents unique challenges for a pediatric surgeon, as it is prone to varied complications. A 14-year-old boy was admitted with us with a 48-hour history of lower abdominal pain and multiple episodes of vomiting. Radiological imaging studies revealed a high-grade partial small bowel obstruction. A fleeting conservative management was tried. The diagnostic laparoscopy revealed a small bowel obstruction secondary to a Meckel’s diverticulum. The diverticulum was resected using an endovascular GIA stapler. The patient was discharged on postoperative day four, tolerating a regular diet. Laparoscopy is a useful diagnostic and therapeutic means for a patient with a small bowel obstruction due to an uncertain etiology.
An Analysis of War Weaponry Trauma Victims from a Medical College Setting in Kashmir Valley  [PDF]
Mumtazdin Wani, Mushtaq Chalkoo, Peer Hilal Ahmad Makhdoomi, Ankush Banotra, Awhad Mueed, Yassar Arafat, Syed Shakeeb
Surgical Science (SS) , 2017, DOI: 10.4236/ss.2017.81002
Abstract: Background: Kashmir valley, being a known conflict zone keeps on receiving war victims due to scuffles between civilians and the government forces. Such upsurges have been noted in the recent past in 2008 and 2010; however, a new face of upheaval took place in the month of July 2016. Herein, we present an analysis of 500 abdominal trauma victims reported to our department at Government Medical College Srinagar, Kashmir, India. Methods: Government Medical College Srinagar Kashmir is a tertiary care teaching hospital situated in the heart of Kashmir valley. Being one of the referral hospitals, for trauma, we received a total figure of 6149 trauma victims out of which 500 were purely of abdominal in nature managed by the department of surgery. The study conducted was a short analysis of these abdominal trauma patients that reported from 8th July to 8th November 2016. Results: The result of analysis of 500 abdominal trauma patients is reported herein. The male female ratio of patients was 19.8:1 (male = 95.2%, female = 4.8%). The age range was from 5 years to 65 years with majority reported in the age range of 15 - 30 years. The number of bullet injuries was =85 and the pellet injuries were =349. The commonest organs involved were small intestines, spleen, large bowel and liver in descending order. Penetrating injuries were seen in =60.4%, non-penetrating were seen in =39.6%. The patients were grouped into conservative, non operative and operative group. The commonest morbidity observed was wound sepsis and a total mortality reached to a figure of 2%. Conclusion: This short study of analysis of trauma victims has explored the newer horizons of trauma management and we believe and conclude that specialized trauma hospitals with skilled manpower and modern gadgets of handling trauma is need of an hour especially in developing countries like ours.
Positive Effects of Gossiping at Work  [PDF]
Rasha Ali Mueed Alshehre
Open Journal of Medical Psychology (OJMP) , 2017, DOI: 10.4236/ojmp.2017.62010
Abstract: Imagining the situation: twenty office-workers stay the whole day together but they cannot gossip at work. They work a day, a week, a month, and suddenly, their productivity and work spirit lowers, they begin to fall ill and refuse to work. The reason is obvious—they miss gossiping. People like to discuss other people’s lives; moreover, they cannot live without it. Moreover, if a person reveals his or her thoughts and ideas about something personal, he/she feels better, and it stimulates such a person to work better. On the contrary, when people keep too many secrets in memory and do not share them with anyone, they can fall into depression. It is doubtful whether any business owner wants to have depressive workers. In order to analyze the problem, one should consider that gossiping is a necessary type of communication at work, can benefit the working place in many effective ways, form the good atmosphere at work. Encouraging of positive gossiping can also bring efficient results into the working process.
A Computational Quadruple Laplace Transform for the Solution of Partial Differential Equations  [PDF]
Hamood Ur Rehman, Muzammal Iftikhar, Shoaib Saleem, Muhammad Younis, Abdul Mueed
Applied Mathematics (AM) , 2014, DOI: 10.4236/am.2014.521314
Abstract: In this paper, we proposed new results in quadruple Laplace transform and proved some properties concerned with quadruple Laplace transform. We also developed some applications based on these results and solved homogeneous as well as non-homogeneous partial differential equations involving four variables. The performance of quadruple Laplace transform is shown to be very encouraging by concrete examples. An elementary table of quadruple Laplace transform is also provided.
Composite Fermions with a Warped Fermi Contour
M. A. Mueed,D. Kamburov,Yang Liu,M. Shayegan,L. N. Pfeiffer,K. W. West,K. W. Baldwin,R. Winkler
Physics , 2014, DOI: 10.1103/PhysRevLett.114.176805
Abstract: Via measurements of commensurability features near Landau filling factor $\nu=1/2$, we probe the shape of the Fermi contour for hole-flux composite fermions confined to a wide GaAs quantum well. The data reveal that the composite fermions are strongly influenced by the characteristics of the Landau level in which they are formed. In particular, their Fermi contour is $\textit{warped}$ when their Landau level originates from a hole band with significant warping.
Fermi Contour Disintegration of Quasi-2D Electrons in Parallel Magnetic Fields
M. A. Mueed,D. Kamburov,M. Shayegan,L. N. Pfeiffer,K. W. West,K. W. Baldwin,R. Winkler
Physics , 2015,
Abstract: In a quasi two-dimensional electron system with non-zero layer thickness, a parallel magnetic field (B||) can couple to the out-of-plane electron motion and lead to a severe distortion and eventual disintegration of the Fermi contour. Here we directly and quantitatively probe this evolution through commensurability and Shubnikov-de Haas measurements on electrons confined to a 40-nm-wide GaAs (001) quantum well. We are able to observe the Fermi contour disintegration phenomenon, in good agreement with the results of semi-classical calculations. Experimentally we also observe intriguing features, suggesting magnetic-breakdown-type behavior when the Fermi contour disintegrates.
Composite Fermion Geometric Resonance Near ν = 1/2 Fractional Quantum Hall State
M. A. Mueed,D. Kamburov,S. Hasdemir,M. Shayegan,L. N. Pfeiffer,K. W. West,K. W. Baldwin
Physics , 2015,
Abstract: We observe geometric resonance features of composite fermions on the flanks of the even denominator {\nu} = 1/2 fractional quantum Hall state in high-mobility two-dimensional electron and hole systems confined to wide GaAs quantum wells and subjected to a weak, strain-induced, unidirectional periodic potential modulation. The features provide a measure of how close to {\nu} = 1/2 the system stays single-component and supports a composite fermion Fermi sea before transitioning into a {\nu} = 1/2 fractional quantum Hall state, presumably the two-component {\Psi}331 state.
What Determines the Fermi Wave Vector of Composite Fermions?
D. Kamburov,Yang Liu,M. A. Mueed,M. Shayegan,L. N. Pfeiffer,K. W. West,K. W. Baldwin
Physics , 2014,
Abstract: Composite fermions (CFs), exotic particles formed by pairing an even number of flux quanta to each electron, provide a fascinating description of phenomena exhibited by interacting two-dimensional electrons at high magnetic fields. At and near Landau level filling $\nu=1/2$, CFs occupy a Fermi sea and exhibit commensurability effects when subjected to a periodic potential modulation. We observe a pronounced asymmetry in the magnetic field positions of the commensurability resistance minima of CFs with respect to the field at $\nu=1/2$. This unexpected asymmetry is quantitatively consistent with the CFs' Fermi wave vector being determined by the \textit{minority} carriers in the lowest Landau level. Our data indicate a breaking of the particle-hole symmetry for CFs near $\nu=1/2$.
Anisotropic Fermi Contour of (001) GaAs Electrons in Parallel Magnetic Fields
D. Kamburov,M. A. Mueed,M. Shayegan,L. N. Pfeiffer,K. W. West,K. W. Baldwin,J. J. D. Lee,R. Winkler
Physics , 2013, DOI: 10.1103/PhysRevB.88.125435
Abstract: We demonstrate a severe Fermi contour anisotropy induced by the application of a parallel magnetic field to high-mobility electrons confined to a 30-nm-wide (001) GaAs quantum well. We study commensurability oscillations, namely geometrical resonances of the electron orbits with a unidirectional, surface-strain-induced, periodic potential modulation, to directly probe the size of the Fermi contours along and perpendicular to the parallel field. Their areas are obtained from the Shubnikov-de Haas oscillations. Our experimental data agree semi-quantitatively with the results of parameter-free calculations of the Fermi contours but there are significant discrepancies.
Determination of the Fermi Contour and Spin-polarization of $ν=3/2$ Composite Fermions via Ballistic Commensurability Measurements
D. Kamburov,M. A. Mueed,I. Jo,Yang Liu,M. Shayegan,L. N. Pfeiffer,K. W. West,K. W. Baldwin,J. J. D. Lee
Physics , 2014, DOI: 10.1103/PhysRevB.90.235108
Abstract: We report ballistic transport commensurability minima in the magnetoresistance of $\nu =3/2$ composite fermions (CFs). The CFs are formed in high-quality two-dimensional electron systems confined to wide GaAs quantum wells and subjected to an in-plane, unidirectional periodic potential modulation. We observe a slight asymmetry of the CF commensurability positions with respect to $\nu=3/2$, which we explain quantitatively by comparing three CF density models and concluding that the $\nu=3/2$ CFs are likely formed by the minority carriers in the upper energy spin state of the lowest Landau level. Our data also allow us to probe the shape and size of the CF Fermi contour. At a fixed electron density of $\simeq 1.8 \times 10^{11}$ cm$^{-2}$, as the quantum well width increases from 30 to 60 nm, the CFs show increasing spin-polarization. We attribute this to the enhancement of the Zeeman energy relative to the Coulomb energy in wider wells where the latter is softened because of the larger electron layer thickness. The application of an additional parallel magnetic field ($B_{||}$) leads to a significant distortion of the CF Fermi contour as $B_{||}$ couples to the CFs' out-of-plane orbital motion. The distortion is much more severe compared to the $\nu=1/2$ CF case at comparable $B_{||}$. Moreover, the applied $B_{||}$ further spin-polarizes the $\nu=3/2$ CFs as deduced from the positions of the commensurability minima.
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