نتایج جستجو برای: water manegment

تعداد نتایج: 550735  

Journal: :Australian and New Zealand journal of public health 2007
W Kerry Mummery Mitchell Duncan Ryan Kift

OBJECTIVE To describe public opinion relating to the fluoridation of drinking water in a sample of the Queensland population. METHOD Data were collected by means of a computer-assisted telephone interview survey from a sample of the Queensland population. Descriptive statistics and logistical regression were used to examine associations between variables. RESULTS Seventy per cent of the tot...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده مهندسی 1391

سیالات انتقال حرارت مرسوم نظیر آب و اتیلن گلایکول که به عنوان عامل خنک کننده در رادیاتور اتومبیل ها بکار می روند، دارای هدایت حرارتی نسبتا پایینی هستند. نانوسیال تکنولوژی جدیدی است که با افزودن مواد در ابعاد نانو به سیال پایه بدست می آید. این گروه جدید از سیالات می توانند به عنوان خنک کننده در رادیاتور اتومبیل ها استفاده شوند. در این مطالعه به بررسی تجربی نقش نانوسیال به عنوان سیال عامل خنک کنن...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید چمران اهواز - دانشکده مهندسی علوم آب 1393

drought is transient phenomenon , slow , repetitive and integral part of the climate of each region. drought begins with a substantial reduction in precipitation over the long-term average rainfall and over time, reduced soil moisture and surface and ground water resources will continue to decrease. this phenomenon is the most important in bakhtegan basin because of its importance in strategic ...

پایان نامه :وزارت بهداشت، درمان و آموزش پزشکی - دانشگاه علوم پزشکی و خدمات بهداشتی درمانی مشهد - دانشکده دندانپزشکی 1390

objective: the objective of this study was to investigate the invitro fluoride release of four new self-adhesive resin cements; set (sdi, australia), breeze (pentron, usa), embrace wetbond (pulpdent, usa), g-cem (gc, japan) and to assess the bonding performance of these self-adhesive resin cements for bonding of orthodontic brackets. materials and methods: for fluoride release experiment, six ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی شریف - دانشکده مهندسی عمران 1380

چکیده ندارد.

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه ارومیه - دانشکده کشاورزی 1389

چکیده ندارد.

Journal: :journal of agricultural science and technology 2015
n. sedaghati h. hokmabadi

in this research, some of the echo-physiological characteristics of pistachio trees were studied to understand crop response to drought stress and determine the best irrigation interval. this experiment was carried out in an orchard with a sandy loam textured soil and a commercial cultivar of pistachio named ouhadi grafted on pistacia vera l. rootstock for three years. the irrigation system sel...

Journal: :iranian journal of science and technology (sciences) 2015
g. mohebali

microbial demulsifiers represent a potentially important product for the petroleum industry due to their specific modes of action, relative ease of preparation, biodegradability and low toxicity. an extracellular demulsifier, capable of the rapid break up of model multiple water-crude oil emulsions was obtained from the bacterial isolate ochrobactrum anthropi ripi5-1. demulsifying activity of t...

Journal: :iran agricultural research 2016
s.m. nassiri a.r. sepaskhah m.m. maharlooei

abstract- maize production, which is ranked after wheat and barely in fars province, iran, needs a considerable amount of irrigation water that is not available in scarce water conditions in drought situations. therefore, proper planting method can improve irrigation water management. the objectives of the present study were to investigate the effects of two planting methods, on-bed and in furr...

Journal: :geopersia 2015
sakineh parhizkar khalil ajdari gholam abbas kazemi samad emamgholizadeh

it is over two decades that groundwater flow models are routinely implemented for better management of groundwater resources.modeling groundwater flow with the help of the ground water modeling system (gms) in the damghan plain aquifer in northern iran,which experiences declining levels and numerous environmental hazards, has demonstrated that, (a) in the worst case scenario theaquifer will fac...

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