نتایج جستجو برای: but in dry years 2000
تعداد نتایج: 17131042 فیلتر نتایج به سال:
the study of air infiltration into the buildings is important from several perspectives that may be noted to energy and design of hvac systems, indoor air quality and thermal comfort and design of smoke control systems. given the importance of this issue, an experimental and numerical study of air infiltration through conventional doors and windows has been explored in iran. to this end, at fir...
this study investigated the effects of manipulating the cognitive complexity of tasks along +/- few elements and the time limits on l2 learners writing performance. to conduct the study, 60 iranian efl learners with two levels of proficiency, low and high intermediate, were selected and assigned to three groups based on the time devoted to task completion. the participants performed both a simp...
Objective: Social problems prohibit accomplishment of social development, or at least delay its process. Child labor is one of the social problems. Poverty has a substantial effect in creation and stability of child labor. In this study, we surveyed correlations between child labor and social development at two distinct times to find the direction of their relationship. Method: This is a c...
We give an explicit polynomial of degree 14 in three real variables x, y and z such that the zero set gives the solid trefoil knot. The polynomial depends on two further parameters which enable a deformation from an embedded torus. We use only elementary methods such that the proofs are also accessible to graduate math work groups for pupils in secondary schools. The results can be easily visua...
Objective: Social problems prohibit accomplishment of social development, or at least delay its process. Child labor is one of the social problems. Poverty has a substantial effect in creation and stability of child labor. In this study, we surveyed correlations between child labor and social development at two distinct times to find the direction of their relationship. Method: This is a c...
in this study, the effects of oleothermal modification on physical and mechanical peroperties of fir wood (abeis sp.) blocks were examined. at first, some blocks of fir wood with 5 × 20 × 120 cm dimensions were prepared. the blocks were treated in soybean oil. the effects of 3 factors such as treatments temperature (180and 200 °c), holding time (12 and 15 h) and initial moisture content of wood...
Recent warming inconsistent with natural association between temperature and atmospheric circulation over the last 2000 years P. A. Mayewski and K. A. Maasch Climate Change Institute, Bryand Global Sciences Building, University of Maine, Orono, Maine 04469, USA Received: 11 November 2005 – Accepted: 24 April 2006 – Published: 30 June 2006 Correspondence to: P. A. Mayewski ([email protected])
Background: Hirsutism is a common clinical problem with different etiologic factors. Hence, clinical and laboratory studies are necessary to find these factors. Objectives: To determine the etiologic factors of hirsutism with clinical and paraclinical studies including TSH, DHEA-S, LH/FSH, testosterone, prolactin, 17-OH progesterone and sonography of ovary. Patients and Methods: This cross sect...
This work aims at understanding the state of the art in the broad contextual research area of "medical concept representation". Our data support the general understanding that the focus of research has moved toward medical ontologies, which we interpret as a paradigm shift. Both the opinion of socially active groups of researchers and changes in bibliometric data since 1988 support this opinion...
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