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Outcome of Inversion 16 in TKD Positive and Negative Acute Myeloid Leukemia Patients
Shahab, Sadaf,Zahid, Danish,Ahmed, Shariq,Nadeem, Muhammad,Farzana, Tasneem,Taj, Mehwesh,Ahmed, Nuzhat,Shamsi, Tahir S Asian Pacific Journal of Cancer Prevention 2016 Asian Pacific journal of cancer prevention Vol.17 No.4
Shahab Saedi,Sayed S. Madaeni,Keyumars Hassanzadeh,Ahmad Arabi Shamsabadi,Saeed Laki 한국공업화학회 2014 Journal of Industrial and Engineering Chemistry Vol.20 No.4
In the present study, asymmetric gas separation membranes of polyethersulfone (PES) and polyethersulfone/polyurethane (PU) were prepared with different blend compositions. The prepared membranes were investigated for the separation of carbon dioxide from methane. The effect of PU on the microstructure and d-spacing of the membranes was studied by X-ray diffraction analysis and the miscibility of PES and PU was investigated using Differential Scanning Calorimetry (DSC). The thermal properties of PES and PES/PU were compared using Thermal Gravimetric Analysis (TGA). The effect of PES/PU blend composition on the morphology and porosity of the membrane was investigated by Scanning Electron Microscopy (SEM) and porosity experiments. Density Functional Theory (DFT) calculations were used to investigate the relative affinity of CO2, CH4 and H2O for PES and PU. Moreover, the effect of PU on the casting solution viscosity, gas sorption and mechanical properties of the PES membrane was investigated. For comparing gas separation performance of PES and PES/PU membranes, pure and mixed gas experiments were carried out. The obtained results indicated that the presence of PU in the casting solution increases the d-spacing and fractional free volume, and decreases the membrane porosity; Tg and thermal resistance, membrane gas sorption as well as CO2 induced plasticization by decreasing Langmuir capacity, and also increases strength at yield and elongation at yield of PES membrane. The presence of PU decreases the CO2 permeance and enhances the CO2/CH4 selectivity and plasticization pressure of the PES membrane. Furthermore, the presence of the PU changes the membrane behavior against the feed pressure, feed temperature and feed composition in the mixed gas experiments.
Survival Outcome of AML Patients with and without TKD Mutations
Shahab, Sadaf,Nisa, Khaleeq Un,Nadeem, Muhammad,Zahid, Danish,Ansari, Saqib,Farzana, Tasneem,Taj, Mehwesh,Borhany, Munira,Ahmed, Nuzhat,Shamsi, Tahir S. Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.24
Shahab, Muhammad Basit,Usman, Muhammad Arslan,Shin, Soo Young IEEE 2017 IEEE communications letters Vol.21 No.2
<P>This letter proposes a novel algorithm named bandwidth adaptation by squeezing idle traffic (BASIT), which aims at reducing the video traffic in idle tabs/windows of browsers. The algorithm is based on detecting active tabs/windows in the browsers at client end. Video data on idle tabs are intelligently compressed by the server to save network bandwidth. Bandwidth wasted on idle video traffic is reduced by either sending the lowest quality of the video or only audio throughout the idle duration of the tabs/windows. It is understandable that substantial amount of bandwidth can be saved by applying BASIT algorithm on browsers.</P>
Fundamental Bounds on the Age of Information in Multi-Hop Global Status Update Networks
Shahab Farazi,Andrew G. Klein,D. Richard Brown III 한국통신학회 2019 Journal of communications and networks Vol.21 No.3
This paper studies the “age of information” in a generalmulti-source multi-hop wireless network with explicit channelcontention. Specifically, the scenario considered in this paper assumesthat each node in the network is both a source and a monitorof information, that all nodes wish to receive fresh status updatesfrom all other nodes in the network, and that only one nodecan transmit in each time slot. Lower bounds for peak and averageage of information are derived and expressed in terms offundamental graph properties including the connected dominationnumber. An algorithm to generate near-optimal periodic status updateschedules based on sequential optimal flooding is also developed. These schedules are analytically shown to exactly achieve thepeak age bound and also achieve the average age bound within anadditive gap scaling linearly with the size of the network. Moreover,the results are sufficiently general to apply to any connectednetwork topology. Illustrative numerical examples are presentedwhich serve to verify the analysis for several canonical networktopologies of arbitrary size, as well as every connected networkwith nine or fewer nodes.
Board Structure and Likelihood of Financial Distress: An Emerging Asian Market Perspective
Shahab UD-DIN,Muhammad Yar KHAN,Anam JAVEED,Ha PHAM 한국유통과학회 2020 The Journal of Asian Finance, Economics and Busine Vol.7 No.11
This study examines the relationship between the attributes of board structure and the likelihood of financial distress for the non-financial sector of an emerging market characterized by concentrated ownership and family-controlled business. The present study utilized panel logistic regression to estimate the relationship between board structure attributes and the likelihood of financial distress. We used Altman Z-Score as a proxy for firm financial distress, as this tool measures the financial distress inversely. The study finds a significant relationship between board size and the likelihood of financial distress. The results show that a one-unit increase in board size would decrease the probability of financial distress by 3.4%. Further, we observe that a greater level of board independence is associated with a lower likelihood of financial distress. A one-unit increase in board independence would decrease the probability of financial distress by 20.4%. We also find a significant positive impact of leverage on the likelihood of financial distress. The present study contributes to the body of literature on board structure attributes and likelihood of financial distress in emerging markets, like Pakistan. Furthermore, the findings would be beneficial for corporate policymakers and investors in formulating corporate financial strategy and predicting business failure.
Chronic Infection and Nodule Formation following Deoxycholate Injection
Shahab Shahid,Fawaz Al-Hassani 대한성형외과학회 2022 Archives of Plastic Surgery Vol.49 No.3
Aqualyx (Marllor International Ltd, Rimini, Italy) was originally developed in Italy by Professor Pasquale Motolese and has been commercially available since 2009. It is a deoxycholate, aqueous gelatinous solution mixed with saline and buffering compounds. It is the only drug approved by the European Union for the reduction in localized fat. Aqualyx is sold exclusively to doctors and nurses trained in intralipotherapy. In the case of our patient, the product administered was advertised as Aqualyx, but was not administered by a trained health professional and was administered too superficially. The patient developed severe pain following the injection and was unable to sit for several weeks. There was localized skin necrosis, and palpable collections where the injection was administered. Our initial suspicion was development of an abscess or hematoma. To characterize further, we arranged an ultrasound scan that showed a “superficial hypoechoic lesion” but no deeper infection or spread. The numerous painful nodules ruptured onto the skin surface, resulting in purulent and bleeding lesions. This case demonstrates the importance of appropriate training and competence in performing cosmetic procedures including injections and fat dissolving treatments.
Numerical analysis of two and three dimensional buoyancy driven water-exit of a circular cylinder
Shahab Moshari,Amir Hossein Nikseresht,Reza Mehryar 대한조선학회 2014 International Journal of Naval Architecture and Oc Vol.6 No.2
With the development of the technology of underwater moving bodies, the need for developing the know-ledge of surface effect interaction of free surface and underwater moving bodies is increased. Hence, the two-phase flow is a subject which is interesting for many researchers all around the world. In this paper, the non-linear free sur-face deformations which occur during the water-exit of a circular cylinder due to its buoyancy are solved using finite volume discretization based code, and using Volume of Fluid (VOF) scheme for solving two phase flow. Dynamic mesh model is used to simulate dynamic motion of the cylinder. In addition, the effect of cylinder mass in presence of an ex-ternal force is studied. Moreover, the oblique exit and entry of a circular cylinder with two exit angles is simulated. At last, water-exit of a circular cylinder in six degrees of freedom is simulated in 3D using parallel processing. The simula-tion errors of present work (using VOF method) for maximum velocity and height of a circular cylinder are less than the corresponding errors of level set method reported by previous researchers. Oblique exit shows interesting results; formation of waves caused by exit of the cylinder, wave motion in horizontal direction and the air trapped between the waves are observable. In 3D simulation the visualization of water motion on the top surface of the cylinder and the free surface breaking on the front and back faces of the 3D cylinder at the exit phase are observed which cannot be seen in 2D simulation. Comparing the results, 3D simulation shows better agreement with experimental data, specially in the maximum height position of the cylinder.