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FINITE TIME BLOW-UP SOLUTION FOR A CLASS OF NONLINEAR HYPERBOLIC EQUATIONS
Tahamtani, Faramarz,Mohammadi, Somayyeh The Korean Society for Computational and Applied M 2010 Journal of applied mathematics & informatics Vol.28 No.1
In this work, We consider an initial boundary value problem for a class of nonlinear hyperbolic equations. We establish a blow-up result for certain solutions with a dissipative term.
ASYMPTOTIC STABILITY AND DECAY RATE OF SOLUTIONS FOR A NONLINEAR FOURTH ORDER WAVE EQUATION
Tahamtani, F 한국전산응용수학회 1997 Journal of applied mathematics & informatics Vol.4 No.1
This paper is concerned with investigating the global as-ymptotic behavior of the zero solution of the initial-boundary value problem for a nonlinear fourth order wave equation, Moreover an esti-mate of the rate of decay of the solutions is obtained.
FINITE TIME BLOW-UP SOLUTION FOR A CLASS OF NONLINEAR HYPERBOLIC EQUATIONS
Faramarz Tahamtani,Somayyeh Mohammadi 한국전산응용수학회 2010 Journal of applied mathematics & informatics Vol.28 No.1
In this work, We consider an initial boundary value problem for a class of nonlinear hyperbolic equations. We establish a blow-up result for certain solutions with a dissipative term.
Clinicopathological Factors and Gastric Cancer Prognosis in the Iranian Population: a Meta-analysis
Somi, Mohammad Hossein,Ghojazadeh, Morteza,Bagheri, Masood,Tahamtani, Taraneh Asian Pacific Journal of Cancer Prevention 2015 Asian Pacific journal of cancer prevention Vol.16 No.3
Background: Gastric cancer is the most common cancer in the Iranian population. The aim of this study was to determine the effect of clinicopathological factors on prognosis by meta-analysis. Materials and Methods: A literature search was conducted using MEDLINE, EMBASE and Cochrane library and extensive literature search using the Persian databases until February 2011. Prospective follow up studies with multivariate analysis of overall survival of the patients with gastric cancer were included in this review. The data were analyzed by CMA.2. Publication bias are checked by funnel plot and data are shown as Forest plots. Results: From a total of 63 articles, 14 retrospective studies which examined 5 prognostic factors and involving 10,500 patients were included. Tumor size (>35mm) was the main significant factor predicting an unfavorable prognosis for the patients with gastric cancer (RR=1.829, p<0.001) followed by presence of distant metastases (RR=1.607, p<0.001), poor differentiation (RR=1.408, p<0.001) and male sex (RR=1.194, p<0.001). Lymph node metastases (RR=1.058, p=0.698) and moderate differentiation (RR=0.836, p=0.043) were not statistically significant as prognostic factors. Conclusions: This meta-analysis suggests that tumor size>35mm, poor differentiation, presence of distant metastasis and male gender are strongly associated with a poor prognosis in Iranian patients with gastric cancer.