نتایج جستجو برای: disinfection by

تعداد نتایج: 7049288  

Journal: :Brazilian oral research 2010
Edson Yukio Komiyama Graziella Nuernberg Back-Brito Ivan Balducci Cristiane Yumi Koga-Ito

The aim of this study was to evaluate alternative methods for the disinfection of toothbrushes considering that most of the previously proposed methods are expensive and cannot be easily implemented. Two-hundred toothbrushes with standardized dimensions and bristles were included in the study. The toothbrushes were divided into 20 experimental groups (n = 10), according to microorganism conside...

Journal: :Journal of water and health 2014
Eunice C Chern Kristen Brenner Larry Wymer Richard A Haugland

The US Environmental Protection Agency has proposed the use of quantitative polymerase chain reaction (qPCR) as a rapid alternative analytical method for monitoring recreational water quality at beaches. For qPCR to be considered for other Clean Water Act purposes, such as inclusion in discharge permits and use in Total Maximum Daily Load calculations, it is necessary to understand how qPCR det...

Journal: :Environmental Health Perspectives 2010

Journal: :American Journal of Public Health and the Nations Health 1961

Journal: :Environmental Health Perspectives 2000

2014
Hassan Aslani Ramin Nabizadeh Mahmood Alimohammadi Alireza Mesdaghinia Kazem Nadafi Reza Nemati Maryam Ghani

BACKGROUND AND OBJECTIVES Water shortage problems have led to find either new water resources or improve wastewater treatment technologies in order to reuse. Due to less performance of previous units in microbial removal, disinfection has become a necessary step in wastewater treatment plants. In the present study performance of hydrogen peroxide (HP) and modified Fenton's reagent (HP + Cu(++))...

Journal: :Revue scientifique et technique 1995
J M Owen

The author presents details on the cleaning and disinfection of specialised farrowing accommodation within an intensive pig unit. Procedures are described for use in two quite different sets of circumstances, as follows: in the event of the occurrence of one of the major notifiable epizootic diseases; routine cleaning and disinfection as part of normal management procedures. In the former case,...

ژورنال: سلامت و محیط زیست 2010
امین, محمد مهدی, بینا, بیژن, فرخ زاده, حسین, موحدیان عطار, حسین, هاشمی, حسن,

Backgrounds and Objectives:Today, due to health, environmental and economical problems, of chlorine application, UV radiation is better option than chlorine for disinfection of effluent. The aim of this study was disinfection of secondary effluent with UV radiation.Materials and Methods: Two types of UV disinfection system including low pressure (LP) and medium pressure (MP) was used to disinfe...

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