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Habeeb Tamer A.A.M.,Mohammad Hatem,Wasefy Tamer,Mansour Mohamed Ibrahim 대한대장항문학회 2023 Annals of Coloproctolgy Vol.39 No.3
Purpose: The outcomes of open colorectal anastomosis of side-to-end versus end-to-end in nonemergent sigmoid and rectal cancer surgery in adults were compared. Methods: A randomized controlled trial on individuals with sigmoid and rectal cancers was conducted between September 2016 and September 2018. Results: The mean age was 62.58±12.3 years in the side-to-end anastomotic (SEA) group and 61.03±13.98 years in the end-to-end anastomotic (EEA) group. Except for the operative time, intraoperative data revealed no significant differences between the studied groups, and the SEA group revealed that the mean anastomotic time was significantly shorter. Perioperative blood loss, length of stay, reoperation, inpatient death, infection, and bleeding were significantly associated with leakage. There is a statistically significant change regarding the range of bowel frequency in the EEA group only (P=0.04). There is a statistically significant difference regarding incontinence for flatus in the SEA group only (P≤0.001). A statistically significant change in both groups regards incontinence for liquid stools (P≤0.001) and clustering of stools (P≤0.001 and P=0.043). The quality of life in the SEA group significantly dropped at 6 months and then returned to baseline as regards to physical well-being (PWB), functional well-being (FWB), and colorectal cancer symptoms (CCS) with no difference as regards SWB and EWB, while in the EEA group, the exact change happened only as regard PWB and FWB, but SWB and CCS percentage did not return to baseline. Conclusion: The SEA group offers a safe alternative approach to the EEA group.
Tamer Awad Ali,E.M.S. Azzam,M.A. Hegazy,A.F.M. El-Farargy,Ali A. Abd-Elaal 한국공업화학회 2014 Journal of Industrial and Engineering Chemistry Vol.20 No.5
In the present study newly developed potentiometric sensors for determination of zinc(II) are presented. The proposed potentiometric method was based on the fabrication of modified carbon paste (MCPE; electrode X) and modified gold nanoparticles-carbon paste (GNPs-CPE; electrode IX) sensors. A mercapto compound of 1,4-bis(5-mercaptopentyloxy)-benzene (BMPB) alone or self-assembled on gold nanoparticles was used as modifier to construct electrode (X) and electrode (IX) sensors, respectively. The prepared electrodes exhibit Nernstian slope of 29.93 ± 0.4 and 26.0 ± 1.02 mV decade-1 towards Zn(II) ion over a wide concentration range of 6.8 × 10-10 to 2.9 × 10-2 and 1.0 × 10-7 to 1.0 × 10-2 mol L-1 for electrode (IX) and electrode (X) sensors, respectively. The limit of detection of the electrode (IX) and electrode (X) sensors was found to be 6.8 × 10-10 and 1.0 × 10-7 mol L-1, respectively. The potentiometric response of the electrode (IX) and electrode (X) based on GNPs-BMPB and BMPB are independent of pH of test solution in the pH range of 2.5–8.1 and 3–7 with a response time of 6 and 8 s for electrode (IX) and electrode (X) sensors, respectively. The proposed sensors showed fairly good discriminating ability towards Zn(II) ion in comparison with many hard and soft metal ions. Finally, the proposed electrodes were successfully used as indicator electrodes in potentiometric titration of zinc ion with sodium tetraphenylborate (NaTPB) and in direct determination of Zn(II) ion in some water samples. The results obtained compared well with those obtained using atomic absorption spectrometry.
A Predictive Model on Air Entrainment by Plunging Water Jets using GEP and ANN
Tamer Bagatur,Fevzi Onen 대한토목학회 2014 KSCE JOURNAL OF CIVIL ENGINEERING Vol.18 No.1
Plunging water jet flow situations are frequently encountered in nature and environmental engineering. A plunging liquid jet has the ability to provide vigorous gas-liquid mixing and dispersion of small bubbles in the liquid, and enhances mass transfer rate by producing larger gas-liquid interfacial area. This process is called air-entrainment or aeration by a plunging water jet. Advances in field of Artificial Intelligence (AI) offer opportunities of utilizing new algorithms and models. This study presents Artificial Neural Network (ANN) and Gene-Expression Programming (GEP) model, which is an extension to genetic programming, as an alternative approach to modeling of volumetric air entrainment rate by plunging water jets. A new formulation for prediction of volumetric air entrainment rate by plunging water jets using GEP is developed. The GEP-based formulation and ANN approach are compared with experimental results, Multiple Linear/Nonlinear Regressions (MLR/NMLR) and other equations. The results have shown that the both ANN and GEP are found to be able to learn the relation between volumetric air entrainment rate and basic water jet properties. Additionally, sensitivity analysis is performed and it is found that nozzle diameter is the most effective parameter on the volumetric air entrainment rate among water jet velocity, jet length and jet impact angle.
Cupping Therapy: An Overview from a Modern Medicine Perspective
Tamer Aboushanab,Saud AlSanad 사단법인약침학회 2018 Journal of Acupuncture & Meridian Studies Vol.11 No.3
Cupping therapy is an ancient traditional and complementary medicine practice. Recently, there is growing evidence of its potential benefits in the treatment of painrelateddiseases. This article gives an overview of cupping therapy practice. Furthermore,this article suggests a new classification of cupping therapy sets, a new classificationof cupping therapy adverse events, and an updated classification of cupping therapytypes.
Tamer Mahmoud,Sanjay Gairola,Ali El-Keblawy 국립중앙과학관 2015 Journal of Asia-Pacific Biodiversity Vol.8 No.2
Large old trees are often recognized for the provision of variety of ecosystem services to humanity. This paper reports the existence of a large old Tamarix aphylla (L.) Karst. tree in the Hamriyah area of Sharjah, the United Arab Emirates. Existence of such keystone structures spans many human generations and they become a historic link between the generations. Therefore, protection and recognition of more culturally, historically, and ecologically important trees by establishing a comprehensive tree list are crucial.
Business Fixed Investment and the Structure of Adjustment Costs
Tamer Abdelgawad,Changyong Rhee 서울대학교 경제연구소 1998 Seoul journal of economics Vol.11 No.2
This paper empirically tests an irreversible investment model against the standard convex adjustment cost model using panel data from COMPUSAT. It shows that the reduced form of the optimal irreversible investment decision turns out to be a Tobit model with measurement errors in the dependent variable. Our non-nested test indicates that the evidence for the irreversible investment model is weak: Only 5 firms among our total sample of 56 firms strictly prefer the irreversibility specification.
A New Sender-Side Public-Key Deniable Encryption Scheme with Fast Decryption
( Tamer Mohamed Barakat ) 한국인터넷정보학회 2014 KSII Transactions on Internet and Information Syst Vol.8 No.9
Deniable encryption, introduced in 1997 by Canetti, Dwork, Naor, and Ostrovsky, guarantees that the sender or the receiver of a secret message is able to “fake” the message encrypted in a specific ciphertext in the presence of a coercing adversary, without the adversary detecting that he was not given the real message. Sender - side deniable encryption scheme is considered to be one of the classification of deniable encryption technique which defined as resilient against coercing the sender. M. H. Ibrahim presented a sender - side deniable encryption scheme which based on public key and uncertainty of Jacobi Symbol [6]. This scheme has several problems; (1) it can`t be able to derive the fake message M<sub>f</sub> that belongs to a valid message set, (2) it is not secure against Quadratic Residue Problem (QRP), and (3) the decryption process is very slow because it is based dramatically on square root computation until reach the message as a Quadratic Non Residue (QNR). The first problem is solved by J. Howlader and S. Basu`s scheme [7]; they presented a sender side encryption scheme that allows the sender to present a fake message M<sub>f</sub> from a valid message set, but it still suffers from the last two mentioned problems. In this paper we present a new sender-side deniable public-key encryption scheme with fast decryption by which the sender is able to lie about the encrypted message to a coercer and hence escape coercion. While the receiver is able to decrypt for the true message, the sender has the ability to open a fake message of his choice to the coercer which, when verified, gives the same ciphertext as the true message. Compared with both Ibrahim`s scheme and J. Howlader and S. Basu`s scheme, our scheme enjoys nice two features which solved the mentioned problems: (1) It is semantically secure against Quadratic Residue Problem; (2) It is as fast, in the decryption process, as other schemes. Finally, applying the proposed deniable encryption, we originally give a coercion resistant internet voting model without physical assumptions.