نتایج جستجو برای: iranian forest
تعداد نتایج: 145682 فیلتر نتایج به سال:
in this research, efficiency of iranian forest and rangeland decision making unit was assessed using non-parametric method. inputs and outputs determined by field research and with applying a delphi method the final input and output variables selected. forty five wood-producing units (forestry plans) in three northern iranian province were studied using data envelopment analysis. the efficiency...
the present research was conducted to accomplish two purposes. firstly, it aimed to explore and describe schematic structure or what halliday and hassan (1989, p.64) have called “generic structure potential” (gsp) of american english, iranian persian and iranian english newspaper editorials within systemic functional linguistics. secondly, a quantitative cross-comparison was made to investigate...
P. fortunei was imported into Iran from China and was planted at different spacings in the forest of the north of Iran, for wood production. In this research, physical, chemical, mechanical properties and morphological characteristics of Iranian cultivated paulownia (Paulownia fortunei L.) wood were investigated. Paulownia has acceptable Runkel, flexibility and slenderness coefficients, which a...
Background: Epidemiological study of infertility might let the related policy makers to make accurate decisions regarding the potential users’ requirements for infertility workup or management. The objective of this study was to find the incidence and etiologic factors for infertility in Iranian population. Methods: an internet based search through PubMed, Google Scholar, Iran Medex, magiran an...
Now a days the paper factories, which because of environmental issues and lack of forest sources, use waste papers, need to identify fibers in raw materials to improve quality of recycled papers. In order to evaluate feasibility of fibers identification, papers of 9 Iranian important factories (12 different papers) were sampled and the frequency of identified species in papers was recorded in m...
BACKGROUND Evaluation of sexual disorders among persons receiving methadone replacement therapy is of great importance, because these problems may lead to non-compliance and relapse. This study aimed to estimate the effect of methadone maintenance therapy (MMT) on sexual function among addicted Iranian men using met-analysis. METHODS Investigating the available data banks, relevant studies we...
while performance-based language assessment has led to an increased authenticity and content validity in the practice of writing assessment, the reliability of ratings has become a major issue. research findings have shown different reactions by native english speaker (nes) and non-native english speaker (nns) teachers to students’ writings. the focus of this study is on investigating whether i...
The aim of this study was to assess the relative efficiency of the Iranian forest management plans using the non-parametric method – Data Envelopment Analysis (DEA) as a well-known and robust technique for measuring the relative efficiency of organizations. The relative efficiency of forest management plans was calculated using the most frequency DEA models such as global technical efficiency (...
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