نتایج جستجو برای: respectively overall
تعداد نتایج: 1077770 فیلتر نتایج به سال:
the effects and influences of various parameters upon the efficiency and the overall volumetric mass transfer coefficients are important subjects to be studied in most liquid-liquid extraction processes. one of these important parameters is surface active agent (surfactant). in this paper, in order to study the effect of sodium dodecyl sulfate (sds) concentration on the efficiency and the avera...
background: multifactorial regression models are frequently used in medicine to estimate survival rate of patients across risk groups. however, their results are not generalisable, if in the development of models assumptions required are not satisfied. missing data is a common problem in pathology. the aim of this paper is to address the danger of exclusion of cases with missing data, and to h...
Background: Due to limited clinical data in pediatric-type sarcomas (rhabdomyosarcoma, Ewing's sarcoma, PNET, and desmoplastic small round-cell tumor), the aim of this study was to evaluate the demographic characteristics and identifying prognostic factors for survival. Materials and Methods: We retrospectively reviewed 110 patients with pediatric-type sarcomas. Overall and disease free surviva...
Background Ewing’s sarcoma family is a group of small round cells tumors. The aim of this study is to evaluate clinicopathologic characteristics and outcome of Ewing’s sarcoma in children and adolescents in Yazd, Iran. Materials and Methods All patients under 19 years with documented pathology of Ewing’s sarcoma family tumor who referred to Shahid Ramazanzadeh Radiotherapy center between 2...
data envelopment analysis (dea) is a non-parametric technique for evaluation of relative efficiency of decision making units described by multiple inputs and outputs. it is based on solving linear programming problems. since 1978 when basic dea model was introduced many its modifications were formulated. among them are two or multi-stage models with serial or parallel structure often called net...
background: breast cancer arising in young patients (≤ 40 years) is being considered as a distinct clinical entity with more aggressive tumor features and poorer survival. our aim was to assess the impact of age on survival among a large group of iranian women diagnosed with breast cancer. methods: in a cross-sectional study, demographic and clinicopathological characteristics of patients with ...
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