نتایج جستجو برای: pipes failure

تعداد نتایج: 379313  

2008
H. A. Visser

1. ABSTRACT It has been about fifty years ago since the first unplasticized poly(vinyl chloride) (uPVC) pipes were installed for use in gas distribution purposes. Currently, about 22,500 km of uPVC is still in use in the Dutch gas distribution network. The pipes were originally designed for a lifetime of 50 years, but due to positive experiences the question arises if (and how long) the lifetim...

Journal: :Energies 2021

Initiated by a case study to assess the effectiveness of modernisation actions undertaken in water supply system, some R&D activities were conducted construct global predictive model, based on available operational failure and recovery data. The data, regarding are pipes’ diameter, modes, materials, functional conditions, seasonality, number failures time-to-recover intervals. data provided...

2007
Christian Morbidoni Axel Polleres Giovanni Tummarello Danh Le Phuoc

This report presents Semantic Web pipes, a powerful paradigm to build RDF-based mashups. Semantic Web pipes work by fetching RDF models on the Web, operating on them, and producing an output which is itself accessible via a stable URL. We illustrate how Semantic Web pipes can solve use cases ranging from simple aggregation to complex collaborative editing and filtering of distributed RDF graphs...

Journal: :Stavební obzor 2023

In order to solve the problems existing in construction of underground structures located downtown saturated soft soil area, such as insufficient site, complex adjacent and great impact on surrounding environment, method bundled integrate tunnel(U-BIT) is proposed. this method, after steel pipes jacking completed, concrete filled into pipes, prestress tensioned make each independent pipe combin...

Journal: :international journal of environmental research 0
m. pazoki faculty of environment, university of tehran, iran m. a. abdoli faculty of environment, university of tehran, iran r. ghasemzade faculty of environment, university of tehran, iran p. dalaei faculty of environment, university of tehran, iran m. ahmadi pari faculty of environment, university of tehran, iran

corrosion makes huge economic and ecologic damage all over the world. biologic corrosion of sewer pipes is considered as a serious limitation in economic perspectives. to prevent biologic corrosive damage, lining techniques can be applied by materials and aggregate resistant to attack bacterially in sewer pipes. the role of bacteria is that they convert sulfur compounds into sulfuric acid which...

2004
JOSEPH HOLDEN

Soil pipes are common and important features of many catchments, particularly in semi-arid and humid areas, and can contribute a large proportion of runoff to river systems. They may also significantly influence catchment sediment and solute yield. However, there are often problems in finding and defining soil pipe networks which are located deep below the surface. Ground-penetrating radar (GPR...

Journal: :The Journal of experimental biology 1996
Schmidt Mangold Deitmer

Using single-electrode current-clamp and two-electrode voltage-clamp, different identified neurones of the leech (Hirudo medicinalis L.) were shown to hyperpolarize, or to exhibit outward currents (usually >2 nA), during bath application of the organic buffers Mops, Pipes and Mes (10 mmol l-1). Tris and Hepes had little or no effect on the membrane properties of neurones when they were added to...

Journal: :Revue des études slaves 2019

Journal: :Nature 1924

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