نتایج جستجو برای: height of 16360 469 m
تعداد نتایج: 21212028 فیلتر نتایج به سال:
association of brucella meningoencephalitis with cerebrospinal fluid shunt in a child: a case report
how to cite this article: abdinia b, barzegar m, maleki m, behbod h, oskoui sh. association of brucella meningoencephalitis with cerebrospinal fluid shunt in a child: a case report. iran j child neurol. 2013 winter:7(1):35-38. brucellosis is an endemic zoonosis in iran. it is a systemic infection that can involve any organs or systems of the body and have variable presentations. ventriculoper...
Natural regeneration ensures the survival of forest stands and sustainable forest development. The present study was conducted to investigate the natural regeneration of Persian oak (Quercus macranthera fisch. & C.A.Mey. Ex Hohen) stands in Arasbaran protected forest. Measurement of the frequency of standard and coppice regenerations was carried out in one-hectare square plots (100 × 100 m) in ...
wheat (triticum aestivum) growth and yield are depressed by physical and chemical interference of weeds. recently, wild barley (hordeum spontaneum) population has increased in wheat fields of many provinces of iran. since, little is known about the allelopathic effects of wild barley residues in soil, greenhouse studies were conducted to examine the effects of soil amended residues of wild barl...
introduction air pollution has harmful effect on human health and the environment. accordingly, considerable effort has been put to analyze the air pollutants. one important issue is the spatial distribution of these pollutants. dispersion of the pollutants released from sources on the ground is mostly driven by the planetary boundary layer where turbulent flow causes mixing of the content of t...
saluk mount is selected for devonian biostratigraphy. this area located at southwest of bojnurd. in this study three sections are selected and two sections, chahar-borj and tabar sections with a thickness of 650 m, which consist mainly of calcareous sediments was studied in detailed but third section, qelli section, with a thickness of about 450m which consist mainly of sandstone and evaporates...
acknowledgements i wish to express my gratitude to all those who have helped me in preparing this thesis. i would like to express my deep gratitude to my respected advisor dr. kourosh akef, whose advice and comments helped me in the early stages of the research and throughout the writing process. i would also like to express my gratitude to dr. hajar khanmohammad whose invaluable guidance he...
THE CENTRALITY OF LEARNING TO CHILDREN’S DEVELOPMENT 464 History 465 MICROGENETIC METHODS FOR STUDYING LEARNING 469 Essential Properties 469 Applicability 469 History 471 Methodological Issues 472 OVERLAPPING WAVES THEORY 477 THE NEW FIELD OF CHILDREN’S LEARNING 480 Variability 480 Basic Empirical Phenomena 480 Inf luences of Child and Environment 484 Theoretical Implications and Questions 486 ...
Background and Objectives: This study focused on lifting drill rods. Drilling is a repetitive and heavy mining operation with a high incidence and severity of musculoskeletal injuries. The purpose of this study was to examine how to lift a vertical drill bit (1.61m and 35kg in height) using two types of rod height and four feet positions, and finally compare them with the Lifting Index (LI). M...
Canopy height is a key variable in tropical forest functioning and for regional carbon inventories. We investigate the spatial structure of the canopy height of a tropical forest, its relationship with environmental physical covariates, and the implication for tropical forest height variation mapping. Making use of high-resolution maps of LiDAR-derived Digital Canopy Model (DCM) and environment...
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