نتایج جستجو برای: samples were divided into three sections
تعداد نتایج: 5214360 فیلتر نتایج به سال:
all analytical methods are generally based on the measurement of a parameter or parameters which are somehow related to the concentration of the species.an ideal analytical method is one in which the concentration of a species can be measured to a high degree precision and accuracy and with a high sensitivity. unfortunately finding such a method is very difficult or sometimes even impossible.in...
this study investigated the potential role of age in inductive and deductive grammar learning among iranian foreign language learners. the experimental population consisted of our randomly selected samples including two groups of children (with age of exposure to english within 8-13), and two groups of adults (with age of exposure to english within 11-13). thus, the comparison was between ch...
iron deficiency is the most common form of malnutrition in developing countries. iron containing supplements have been used effectively to solve this problem. in children, because of teeth staining after taking iron drops, parents have the idea that iron drops are the cause of tooth decay; therefore, they limit this vital supplement in their children's diet. hereby, we evaluate the histologic e...
objective(s):in the present study, we evaluated immunological and immunomodulatory properties of royal jelly (rj) in 2,4,6 trinitrobenzene sulfonic acid (tnbs)-induced colitis in rats. materials and methods: eighteen adult female wistar albino rats were divided into three groups of six animals each: a control group that received only saline solution, a tnbs-induced colitis group, and a tnbs-col...
statement of problem: perforations are significant complications that can occur during root canal therapy and may result in the destruction of adjacent periodontal tissues. an ideal material for repairing a perforation should be biocompatible and have a high sealing ability. purpose: the aim of this study was to compare histologic tissue responses of experimentally induced pulp chamber perforat...
The present investigation sought to comparatively explore the effect of length of residence (LOR) as well as EFL instruction on the pragmatic competence of Iranian learners. The participants were 45 EFL learners in Iran and 45 learners in Canada selected based on snowball sampling and each group was divided into three sub-groups based on the years of learning English in an EFL or a natural sett...
Background; Fluoride is an essential nutrient for the human body. The major routes of fluoride intake include food and drinking water, though the absorption of fluoride from food is much easier. The aim of this study was to evaluate the amount of fluoride in the soil and tomato and onion crops on farms of Zanjan. Methods; Three farms of each crop (tomato and onion) were selected randomly. Ea...
flow in natural river bends is a complex and turbulent phenomenon which affects the scour and sedimentations and causes an irregular bed topography on the bed. for the reason, the flow hydralics and the parameters which affect the flow to be studied and understand. in this study the effect of bed and wall roughness using the software fluent discussed in a sharp 90-degree flume bend with 40.3cm ...
a large number of single research studies on the effects of strategy-based instruction (sbi) in teaching english as a foreign or second language has been conducted so far. however, the lack of a comprehensive meta-analysis targeting the effectiveness of english language sbi is observed. moreover, the findings of experimental studies regarding the context of the english language, proficiency lev...
objective: dermatophytosis is one of the most common pandemic fungal infections that is a major health problem in cities and villages. this study aims to evaluate pcr sensitivity and accuracy in the detection of nail dermatophytosis compared to conventional direct and culture detection methods, and performs an assessment of trichophyton rubrum in patients suspected of having nail dermatophytosi...
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