نتایج جستجو برای: annual maximum level

تعداد نتایج: 1428841  

Journal: :archives of hygiene sciences 0
zahra ahmadli department of environmental health engineering, school of public health, qom university of medical sciences, qom, iran. mohammad fahiminia research center for environmental pollutants, qom university of medical sciences, qom, iran. reza ansari qom water and wastewater company, qom, iran. maryam savadkouhi department of environmental health engineering, school of public health, qom university of medical sciences, qom, iran. azita anbaz department of environmental health engineering, school of public health, qom university of medical sciences, qom, iran. akbar escandari department of environmental health engineering, school of public health, qom university of medical sciences, qom, iran.

background & aims of the study: drinking polluted water can transmit diseases, so potable water treatment is one of the most challenging and complex systems in countries. continuous monitoring for evaluation process in water treatment plant is important. this study aims to investigate performance evaluation of qom water treatment plant to remove turbidity and coliform in 2005 - 2014. materials ...

Journal: :تحقیقات جغرافیایی 0
مجتبی نساجی زواره موسسه آموزش عالی علمی کاربردی جهاد کشاورزی فاطمه رحیم زاده پژوهشکده هواشناسی

the main purpose of this article is, showing similar fluctuation of temperature series and their consistency with what happened in the global level. in addition, it determines new estimates of regional seasonal and annual temperature trends over iran, after the detection of artificial and natural non homogenous points of 33 synoptic stations for the period of 1960 2010. the 22 stations with sho...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان - دانشکده ریاضی 1390

the main objective in sampling is to select a sample from a population in order to estimate some unknown population parameter, usually a total or a mean of some interesting variable. a simple way to take a sample of size n is to let all the possible samples have the same probability of being selected. this is called simple random sampling and then all units have the same probability of being ch...

2009
Pertti Hari Pekka Nöjd

The annual photosynthetic production of Scots pine (Pinus sylvestris) was simulated for 1906–2002 for a location in northern Finland. We used the PhenPhoto model, which combines two key features of photosynthesis: the response to instantaneous radiation and the acclimation to the annual cycle. The input data for the PhenPhoto model include instantaneous photosynthetically active radiation (PAR)...

2013
Ahmet Karaburun Ali Demirci Fatih Kara

The present study is about the analysis of mean, mean maximum and mean minimum temperatures carried out on annual, seasonal and monthly time-scales examining the data from 8 meteorological stations in Istanbul for the period 1975-2006. Various spatial and statistical tools were used to display and analyze trends in temperature data. ArcGIS was used to produce the spatially distributed temperatu...

2012
Philippe Crochet

The goal of this study is to develop an objective methodology for estimating design floods, i.e. the flood peak discharge with return period T , at ungauged river catchments in Iceland. First, a regional flood frequency analysis is presented for estimating the T -year flood peak discharge with fixed duration D, Q(T,D), for poorly gauged and ungauged catchments. This is done by scaling a regiona...

2009
Wei Zhang Yixin Yan Jinhai Zheng Ling Li Xue Dong Huijuan Cai

Keyword: Pearl River Delta extreme water level sand excavation non-parameters test This paper is concerned with identifying the spatial and temporal patterns in the annual maximum and minimum water level in the Pearl River Delta (PRD) region. The Mann–Kendall test and Pettitt test are used to detect trends and abrupt change points, and the Trend Free Pre-Whitening (TFPW) approach then eliminate...

Journal: :International Journal of Health Geographics 2006
Musawenkoi LH Mabaso Penelope Vounatsou Stanely Midzi Joaquim Da Silva Thomas Smith

BACKGROUND On the fringes of endemic zones climate is a major determinant of inter-annual variation in malaria incidence. Quantitative description of the space-time effect of this association has practical implications for the development of operational malaria early warning system (MEWS) and malaria control. We used Bayesian negative binomial models for spatio-temporal analysis of the relation...

2013
Yahkat Barshep Clive D T Minton Les G Underhill Birgit Erni Pavel Tomkovich

Molt is a major component of the annual cycle of birds, the timing and extent of which can affect body condition, survival, and future reproductive success through carry-over effects. The way in which molt is fitted into the annual cycle seems to be a somewhat neglected area which is both of interest and of importance. Study of the causes of annual variation in the timing of molt and its potent...

Journal: :iranian journal of medical physics 0
zahra jomehzadeh m.sc. in medical physics, kerman university of medical science, kerman, iran ali jomehzadeh m.sc. in medical physics, rafsanjan university of medical science, rafsanjan, iran

introduction:  all of  the  people worldwide  are exposed  to  low levels  of  radiation. cancer induction  and  genetic disorders are among the hazards of low level exposure. in some cases, radiation close to hot springs is  higher than normal areas due to a high concentration and the decay products of ra-226. given the use of hot  springs by the general public  because  of their therapeutic p...

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