نتایج جستجو برای: iran n130000 by using multistage random sampling technique
تعداد نتایج: 8902842 فیلتر نتایج به سال:
BACKGROUND The fertility experience in Iran suggests that the family planning programs had an effective role in the fertility reduction. This study aimed to specify patterns of marriage in Iran and especially in a northern city of Iran and to investigate the association between patterns of marriage and contraceptive use before first pregnancy and current contraceptive use. METHODS In this cro...
"Economic analysis of production and marketing tomatoes in Raipur, Chhattisgarh" is the topic current study. The sample was chosen using a multistage random sampling technique. Raipur district's 1 Block, 5 Villages, 60 Tomato Growers were all included research. By personal interview approach, main statistics for season 2023 gathered. Different secondary sources used to gather information on reg...
in this thesis, a better reaction conditions for the synthesis of spirobarbiturates catalyzed by task-specific ionic liquid (2-hydroxy-n-(2-hydroxyethyl)-n,n-dimethylethanaminium formate), calcium hypochlorite ca(ocl)2 or n-bromosuccinimide (nbs) in the presence of water at room temperature by ultrasonic technique is provided. the design and synthesis of spirocycles is a challenging task becaus...
OBJECTIVE Iodine Deficiency (ID) was for years considered a contributing factor for endemic goiter in Iran. The present study was conducted to assess the goiter prevalence and iodine status in schoolchildren of Isfahan 16 years after the initiation of salt iodization in Iran. DESIGN 2331 schoolchildren, aged 6-13 years were selected by multistage random sampling. Thyroid size was estimated in...
BACKGROUND Head lice infestation caused by Pediculus humanus var capitis (Pediculus capitis) is a worldwide public health concern that affects mostly school aged children. This descriptive, analytical study was carried out in 2008 to determine the prevalence of pediculosis capitis and some risk factors among primary-school pupils in Bahar, Hamadan Province, Iran. METHODS We selected 900 pupil...
this research was conducted with the purpose of analyzing improvement mechanisms of human resource development (hrd) in agriculture faculties. this survey research was descriptive-explanatory. the population of this research consisted of all agricultural faculty members of iran universities (n=1178). data was collected using multi-stage random sampling method. finally, 248 questionnaires were c...
today, the route for economic development in most countries is the same as international open competitive economy. economic institutes well known that supportive public economy belonged on the past and they may compete in the global economy. it is obvious that if they have no competitive potency or not familiar with competition technique, they may be devastated. banking system aims to collect t...
in this thesis, a new optically active poly(amide-imide) (pai) was synthesized by the indirect polycondensation reaction of the l-phenylalanine based diacid chloride and 4,4?-diaminodiphenylether in the presence of triethylamine in n-methyl-2-pyrrolidone. the formation of pai was confirmed by ftir, 1h nmr and elemental analysis. in next step, the surface of titanium dioxide (tio2) nanoparticles...
INTRODUCTION Despite long standing iodine supplementation in Iran the prevalence of goiter remains high in some areas. This may suggest that causes other than iodine deficiency, such as autoimmune thyroid diseases, should also be considered. We therefore assessed the prevalence of anti-thyroid antibodies in children living in an inland area in Iran and correlated these findings with prevalence ...
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