Systematic reviews that collate data about the relative effects of multiple interventions via network meta-analysis are highly informative for decision-making purposes. A network meta-analysis provides two types of findings for a specific outcome: the relative treatment effect for all pairwise comparisons, and a ranking of the treatments. It is important to consider the confidence with which th...

Background: Pentoxifylline, a valuable medication with promising clinical characteristics and considerable profile of safety is used in many conditions namely chronic kidney diseases (CKD). However, the decision to prescribe pentoxifylline for anemia in CKD should be based on evidence accrued from randomized controlled trials (RCTs). Yet, substantial heterogeneity exists in studies performed to...

purpose: this paper aims to evaluate the performance of two public search ensiges, including yahoo and google in terms of their indexing coverage and the effectiveness of metadata elements on web page ranking. method: the effectiveness of the five metadata elements including html title tag, html keywords and description meta-tags, title and subject metadata elements from dublin core, which focu...

We propose a meta-meta framework architecture for supporting the behavior based integration of two business processes. The meta-meta level provides basic integration operators to the system administrator to create integration options for specific domains. Based on semantic relationships between nodes of two business processes these integration options are executed and transform parts of the bus...

Nominal sets are a sets-based first-order denotation for variables in logic and programming. In this paper we extend nominal sets to two-level nominal sets. These preserve much of the behaviour of nominal sets—including notions of variable and abstraction—but they include a denotation for variables and meta-variables. Meta-variables are interpreted as infinite lists of distinct variable symbols...

The O-methyltransferase of tobacco cell culture was resolved to its meta and para directing forms by chromatography on DEAE-cellulose. Despite similarities in molecular weights and pI values of the two forms, however, evidence from pH optima, SH-group inhibitors, methylation ratios, SDS-acrylamide gels and mixed substrate experiments indicates the existence of two discrete enzymes acting at the...

context migraine is a major dilemma and problem which affects public health and results to reduced quality of life. this study aimed to determine the prevalence of migraine in iran. evidence acquisition a systematic search was conducted using pub med, web of science, embase, scopus, ovid, google scholar, as well as iranian databases including: magiran, iranmedex and scientific information datab...