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Farooq, Faheem,Zarrabi, Kevin,Sweeney, Keith,Kim, Joseph,Bandovic, Jela,Patel, Chiraag,Choi, Minsig The Korean Gastric Cancer Association 2018 Journal of gastric cancer Vol.18 No.2
Mixed neuroendocrine-nonneuroendocrine neoplasms (MiNENs) are a group of rare tumors previously known as mixed adenoneuroendocrine carcinomas (MANECs). The neuroendocrine component is high-grade and may consist of small-cell carcinoma or large-cell neuroendocrine carcinoma. The nonneuroendocrine component may consist of adenocarcinoma or squamous cell carcinoma. We report a unique case of a MiNEN with trilineage differentiation: large-cell neuroendocrine carcinoma, squamous cell carcinoma, and adenocarcinoma. The reported patient presented with symptoms of an upper gastrointestinal bleed and was ultimately diagnosed with a MiNEN with trilineage differentiation. This is the first report of this exceedingly rare tumor type to include next-generation sequencing of the 3 separate tumor entities. In addition, we review the current literature and discuss the role of next-generation sequencing in classifying and treating MiNEN tumors.
Faheem Farooq,Kevin Zarrabi,Keith Sweeney,김요셉,Jela Bandovic,Chiraag Patel,최민식 대한위암학회 2018 Journal of gastric cancer Vol.18 No.2
Mixed neuroendocrine-nonneuroendocrine neoplasms (MiNENs) are a group of rare tumors previously known as mixed adenoneuroendocrine carcinomas (MANECs). The neuroendocrine component is high-grade and may consist of small-cell carcinoma or large-cell neuroendocrine carcinoma. The nonneuroendocrine component may consist of adenocarcinoma or squamous cell carcinoma. We report a unique case of a MiNEN with trilineage differentiation: large-cell neuroendocrine carcinoma, squamous cell carcinoma, and adenocarcinoma. The reported patient presented with symptoms of an upper gastrointestinal bleed and was ultimately diagnosed with a MiNEN with trilineage differentiation. This is the first report of this exceedingly rare tumor type to include next-generation sequencing of the 3 separate tumor entities. In addition, we review the current literature and discuss the role of next-generation sequencing in classifying and treating MiNEN tumors.
QoSCM: QoS-aware Coded Multicast Approach for Wireless Networks
Mohajer, Amin,Barari, Morteza,Zarrabi, Houman Korean Society for Internet Information 2016 KSII Transactions on Internet and Information Syst Vol.10 No.12
It is essential to satisfy class-specific QoS constraints to provide broadband services for new generation networks. The present study proposes a QoS-driven multicast scheme for wireless networks in which the transmission rate and end-to-end delay are assumed to be bounded during a multiple multicast session. A distributed algorithm was used to identify a cost-efficient sub-graph between the source and destination which can satisfy QoS constraints of a multicast session. The model was then modified as to be applied for wireless networks in which satisfying interference constraints is the main challenge. A discrete power control scheme was also applied for the QoS-aware multicast model to accommodate the effect of transmission power level based on link capacity requirements. We also proposed random power allocation (RPA) and gradient power allocation (GPA) algorithms to efficient resource distribution each of which has different time complexity and optimality levels. Experimental results confirm that the proposed power allocation techniques decrease the number of unavailable links between intermediate nodes in the sub-graph and considerably increase the chance of finding an optimal solution.
Marvi, Omid,Alizadeh, Abdolhamid,Zarrabi, Saeid Korean Chemical Society 2011 Bulletin of the Korean Chemical Society Vol.32 No.11
Various 5-substituted 1H-tetrazole derivatives were synthesized in a simple and environmentally benign method from the reaction of aryl and benzyl nitriles with sodium azide in solvent-free media using montmorillonite K-10 clay as solid recyclable heterogeneous acidic catalyst and microwave irradiation in good yields and short reaction times.
Increasing the quality of reconstructed signal in compressive sensing utilizing Kronecker technique
H. Zanddizari,S. Rajan,Houman Zarrabi 대한의용생체공학회 2018 Biomedical Engineering Letters (BMEL) Vol.8 No.2
Quality of reconstruction of signals sampled using compressive sensing (CS) algorithm depends on the compression factorand the length of the measurement. A simple method to pre-process data before reconstruction of compressively sampledsignals using Kronecker technique that improves the quality of recovery is proposed. This technique reduces the mutualcoherence between the projection matrix and the sparsifying basis, leading to improved reconstruction of the compressedsignal. This pre-processing method changes the dimension of the sensing matrix via the Kronecker product and sparsitybasis accordingly. A theoretical proof for decrease in mutual coherence using the proposed technique is also presented. Thedecrease of mutual coherence has been tested with different projection matrices and the proposed recovery technique hasbeen tested on an ECG signal from MIT Arrhythmia database. Traditional CS recovery algorithms has been applied withand without the proposed technique on the ECG signal to demonstrate increase in quality of reconstruction technique usingthe new recovery technique. In order to reduce the computational burden for devices with limited capabilities, sensing iscarried out with limited samples to obtain a measurement vector. As recovery is generally outsourced, limitations due tocomputations do not exist and recovery can be done using multiple measurement vectors, thereby increasing the dimensionof the projection matrix via the Kronecker product. The proposed technique can be used with any CS recovery algorithmand be regarded as simple pre-processing technique during reconstruction process.
Omid Marvi,Abdolhamid Alizadeh,Saeid Zarrabi 대한화학회 2011 Bulletin of the Korean Chemical Society Vol.32 No.11
Various 5-substituted 1H-tetrazole derivatives weres ynthesized in a simple and environmentally benign method from the reaction of aryl and benzyl nitriles with sodium azide in solvent-free media using montmorillonite K-10 clay as solid recyclable heterogeneous acidic catalyst and microwave irradiation in good yields and short reaction times.
QoSCM: QoS-aware Coded Multicast Approach for Wireless Networks
( Amin Mohajer ),( Morteza Barari ),( Houman Zarrabi ) 한국인터넷정보학회 2016 KSII Transactions on Internet and Information Syst Vol.10 No.12
It is essential to satisfy class-specific QoS constraints to provide broadband services for new generation networks. The present study proposes a QoS-driven multicast scheme for wireless networks in which the transmission rate and end-to-end delay are assumed to be bounded during a multiple multicast session. A distributed algorithm was used to identify a cost-efficient sub-graph between the source and destination which can satisfy QoS constraints of a multicast session. The model was then modified as to be applied for wireless networks in which satisfying interference constraints is the main challenge. A discrete power control scheme was also applied for the QoS-aware multicast model to accommodate the effect of transmission power level based on link capacity requirements. We also proposed random power allocation (RPA) and gradient power allocation (GPA) algorithms to efficient resource distribution each of which has different time complexity and optimality levels. Experimental results confirm that the proposed power allocation techniques decrease the number of unavailable links between intermediate nodes in the sub-graph and considerably increase the chance of finding an optimal solution.
Vahid Vatanpour,Abbas Shockravi,Hamed Zarrabi,Zahra Nikjavan,Ali Javadi 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.30 No.-
Partially reduced graphene oxide/Ag nanocomposite (rGO/Ag) was fabricated via a green and facilemethod, from graphite oxide, AgNO3 as a precursor of Ag0, and sodium citrate as a reducing andstabilizing agent. The synthesized rGO/Ag nanocomposite was characterized by X-ray diffraction, Fouriertransform infrared spectroscopy (FT-IR) and scanning electron microscopy techniques (SEM). Theinfluence of rGO/Ag nanocomposite as a new nanofiller on the preparation of polyethersulfone (PES)mixed matrix membranes was evaluated in the cases of permeation performance, hydrophilicity, antifoulingand anti-bacterial properties. Water flux of the mixed matrix membranes was increased up to0.2 wt% rGO/Ag, reaching to 429.8 (kg/m2 h), and then reduced. The anti-bacterial activities of rGO/Agmixed matrix membranes were investigated using Gram-negative bacteria of Escherichia coli andPseudomonas aeruginosa, and Gram-positive bacteria of Staphylococcus aureus. The amount of Ag0 in thesurface of GO sheets was about 34.24 wt%. Addition of rGO/Ag nanosheets induced anti-bacterialproperties to the membranes, leading to the increase in the zone of inhibition. The flux recovery ratio(FRR) study of the membranes using bovine serum albumin (BSA) solution revealed that 0.2 wt% rGO/Agmembrane had the best fouling resistance with the FRR value of 67.2%.