نتایج جستجو برای: porous pipes

تعداد نتایج: 57001  

Journal: :Kobunshi 1968

Journal: :Scientific American 1887

2011
Tomasz Smal

The paper presents research on expedient repairs, including battle damage repair methods of hydro-pneumatic pipes with adhesives. According to analyzed publications concerning battle damage of military equipment, various pipes and lines, which are used in military vehicles and aircrafts, are one of the most often damaged parts during combat operations. During experimental tests, the efficiency ...

2004
E.M.W. Skinner J. S. Marsh

Field and Scott Smith [Field, M., Scott Smith, B.H., 1999. Contrasting geology and near-surface emplacement of kimberlite pipes in southern Africa and Canada. Proc. 7th Int. Kimb. Conf. (Eds. Gurney et al.) 1, 214–237.] propose that kimberlite pipes can be grouped into three types or classes. Classical or Class 1 pipes are the only class with characteristic low temperature, diatreme-facies kimb...

2007
D. R. Garwood J. Ward D. R. Bowen M. Fisher D. Gent

The purpose of the air distribution system in a fluidised bed combustor is to provide a reasonably uniform spread of combustion air over the entire horizontal cross-sectional area of the bed. One of the simplest, and hence cheapest, forms of air distributor is the sparge pipe design, in which an array of horizontal pipes is fitted at the base of the bed. Combustion air is then supplied to one e...

2007
Frank Kirchner

The paper sketches KURT, an autonomous robot platform prototype that is able to navigate inside a network of sewage pipes. KURT is a six-wheeled device; it has modular, layered hardware and control architectures. Its sensor connguration consists mostly of stationary and one exible ultrasound sensors and of two inclinometers. In experiments run in a test sewerage system consisting of concrete pi...

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...

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: :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...

Journal: :IOP conference series 2021

Abstract Dry-hot rock is a kind of new geothermal energy with abundant storage. At present, the extraction dry-hot mainly through artificial fracturing mass by injecting water as working fluid. The heat extracted heat-carrying medium.This paper combines super-long gravity pipe rock, and buries carbon dioxide in Then, feasibility extracting from 2500m studied numerical simulation.The storage equ...

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