نتایج جستجو برای: urban drainage

تعداد نتایج: 211112  

Journal: :Progres en urologie : journal de l'Association francaise d'urologie et de la Societe francaise d'urologie 2012
E Valgueblasse J Berger A Roux X Plainard J-P Dumas A Descazeaud

OBJECTIVE To evaluate the management of patients with long-term (>1 month) indwelling catheter by general practitioners (GP). PATIENTS AND METHODS A self-questionnaire was sent to 603 regional GP, between March and May 2010. It was composed of 12 multiple-choice questions and one open question, about management of their patients with indwelling catheter. RESULTS Two hundred and twenty-eight...

Journal: :Intek : Informasi Teknologi : Jurnal Penelitian 2021

One of the causes flooding in Makassar City is management water system that not optimal. It necessary to arrange a drainage overcome City. In this study topography on Catchment area analysis, analysis hydrology and hydraulics analysis. Modeling distribution flood performed using HEC-RAS applications. This research was conducted Tallo watershed which consists Upper sub-watershed Mangalarang sub-...

Journal: :Journal of Water Supply: Research and Technology-Aqua 2019

1999
Amr W. Sadek Hesham Ghoneim Mustafa Mossad

The present paper reports the implementation of a neural network technique to predict ground settlement as occasioned by dewatering activities of a long-term large-scale drainage project. The objective of the project is to lower and maintain the level of the ground water table in urban areas through a system of a non-stop pumping wells whose layout and operation rate are determined and implemen...

2015
Vincenza Notaro Lorena Liuzzo Gabriele Freni Goffredo La Loggia Paolo Reggiani Ezio Todini

Future projections provided by climate models suggest that the occurrence of extreme rainfall events will increase and this is evidence that the climate is changing. Because the design of urban drainage systems is based on the statistical analysis of past events, variations in the intensity and frequency of extreme rainfall represent a critical issue for the estimation of rainfall. For t...

Journal: :Water science and technology : a journal of the International Association on Water Pollution Research 2016
Malte Ahm Søren Thorndahl Jesper E Nielsen Michael R Rasmussen

Combined sewer overflow (CSO) structures are constructed to effectively discharge excess water during heavy rainfall, to protect the urban drainage system from hydraulic overload. Consequently, most CSO structures are not constructed according to basic hydraulic principles for ideal measurement weirs. It can, therefore, be a challenge to quantify the discharges from CSOs. Quantification of CSO ...

2013
Takashi Furukawa Yoshihiro Suzuki

This study aimed to identify specific river sources of fecal contamination by applying pulsed-field gel electrophoresis (PFGE) to environmental water samples from a recreational beach in Japan. The genotypes of all Enterococcus faecium and Enterococcus faecalis strains used as indicators of fecal pollution on the recreational beach and rivers were analyzed by PFGE, and the PFGE profiles of the ...

2016
Roman Maier Thomas Hofer Günter Gruber Dirk Muschalla

Late research and developments show a trend towards integrated models to simulate the urban drainage cycle to offer a complete picture of the system’s performance. However, in regard to integrated models considering water quality, only few actual case studies exist. We developed such a model for the urban drainage system of Graz, Austria containing runoff generation, a sewer system, actuators a...

Journal: :Water science and technology : a journal of the International Association on Water Pollution Research 2009
S Thorndahl

Long term prediction of maximum water levels and combined sewer overflow (CSO) in drainage systems are associated with large uncertainties. Especially on rainfall inputs, parameters, and assessment of return periods. This paper proposes a Monte Carlo based methodology for stochastic prediction of both maximum water levels as well as CSO volumes based on operations of the urban drainage model MO...

2012
Jana Caletková Michaela Klímová Dana Komínková

This article is focused on definition and identification of optimal ecological flow for macrozoobenthos communities in small urban creeks affected by urban drainage using the Physical HABitat Simulation (PHABSIM) system. It describes the process of determination of ecological flows, from field measurement to determined values. Results show that combine sewer overflows and storm water drains neg...

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