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Kazeem B. Adedeji, Yskandar Hamam, Bolanle T. Abe and Adnan M. Abu-Mahfouz
Water loss through leaking pipes constitutes a major challenge to the operational service of water utilities. In recent years, increasing concern about the financial loss and environmental pollution caused by leaking pipes has been driving the developmen...
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Kazeem B. Adedeji, Yskandar Hamam, Bolanle T. Abe, Adnan M. Abu-Mahfouz
Pág. 1 - 21
Water loss through leaking pipes constitutes a major challenge to the operational service of water utilities. In recent years, increasing concern about the financial loss and environmental pollution caused by leaking pipes has been driving the developmen...
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Ferley Castro Aranda, Rodolfo García Sierra, Andrés Felipe Cerón Piamba, Benjamin Mailhé and Luis Miguel León Gil
This paper presents an algorithm that evaluates the current state of an asset fleet containing sulphur hexafluoride (SF6) and estimates its leakage in future electrical power substation projects. The algorithm uses simple models and easy tools to facilit...
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Nara Somaratne, Saad Mustafa, Jeff Lawson
Pág. 1 - 23
The mode of vertical recharge to aquifers is important to the application of appropriate recharge estimation methods. This study identifies the origin, geochemical evolution and mode of vertical leakage to the Gambier Basin confined aquifer, south east o...
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Nara Somaratne, Saad Mustafa and Jeff Lawson
The mode of vertical recharge to aquifers is important to the application of appropriate recharge estimation methods. This study identifies the origin, geochemical evolution and mode of vertical leakage to the Gambier Basin confined aquifer, south east o...
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Nara Somaratne
The article ?Karst aquifer recharge: Comments on ?Characteristics of Point Recharge in Karst Aquifers?, by Adrian D. Werner, 2014, Water 6, doi:10.3390/w6123727? provides misrepresentation in some parts of Somaratne [1]. The description of Uley South Qua...
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Yan Xu, Huiyue Yi, Wuxiong Zhang and Hui Xu
Estimating the frequencies of multiple superimposed exponentials in noise is an important problem due to its various applications in engineering. In order to obtain good inhibition of spectral leakage and improve the estimation accuracy, an improved Chir...
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Bin Cheng, Ping Chen, Xin Zhang, Keyu Fang, Xiaoli Qin and Wei Liu
With the rapid development of ubiquitous data collection and data analysis, data privacy in a recommended system is facing more and more challenges. Differential privacy technology can provide strict privacy protection while reducing the risk of privacy ...
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Roman Varbanets, Oleksij Fomin, Václav Pí?tek, Valentyn Klymenko, Dmytro Minchev, Alexander Khrulev, Vitalii Zalozh and Pavel Kucera
The article presents the acoustic method of marine low-speed engine turbocharger parameter estimation under operating conditions when a prompt assessment of instantaneous turbocharger speed and rotor vibration level is required. The method lies in the an...
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Rongxiao Wang, Bin Chen, Sihang Qiu, Zhengqiu Zhu and Xiaogang Qiu
The accurate prediction of air contaminant dispersion is essential to air quality monitoring and the emergency management of contaminant gas leakage incidents in chemical industry parks. Conventional atmospheric dispersion models can seldom give accurate...
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João Miguel Silva, Marco António Oliveira, André Ferraz Saraiva and Aníbal J. S. Ferreira
The estimation of the frequency of sinusoids has been the object of intense research for more than 40 years. Its importance in classical fields such as telecommunications, instrumentation, and medicine has been extended to numerous specific signal proces...
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Muhammad Zahid Jiwa, Young Tae Kim, Zahiraniza Mustaffa, Seungjun Kim and Do Kyun Kim
Traditionally, subsea pipelines designed for the transportation of oil, gas, and water are constructed using carbon steel due to its strength, toughness, and ability to operate at temperatures up to 427 °C. However, polyethylene (PE), especially its high...
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Junxin Huang, Yuchuan Luo, Ming Xu, Bowen Hu and Jian Long
Online ride-hailing (ORH) services allow people to enjoy on-demand transportation services through their mobile devices in a short responding time. Despite the great convenience, users need to submit their location information to the ORH service provider...
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Jingyi Chang, Yuanyuan Li and Hailong Lu
Pyrites are widely distributed in marine sediments, the morphology of which is applied as a proxy to infer the redox conditions of bottom water, and identify diagenetic stages and hydrocarbon leakage activities. In this review, the methods used for the m...
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Johanna Merisalu, Jonas Sundell and Lars Rosén
Construction below the ground surface and underneath the groundwater table is often associated with groundwater leakage and drawdowns in the surroundings which subsequently can result in a wide variety of risks. To avoid groundwater drawdown-associated d...
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Hua Zhu, Dechao Li, Henglin Pu, Limin Wang, Yang He, Yufan Bu and Defu Che
An inherent defect of the operating rotary air preheaters (RAPH) is known as leakage, which seriously hinders the efficient and safe operation of RAPH. It is significant for the estimation of the direct leakage to determine the effects of different struc...
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Giulio Cantini, Simone Salvadori, Massimiliano Insinna, Giorgio Peroni, Gilles Simon, Duccio Griffini and Raffaele Squarcini
Regenerative pumps are characterized by a low specific speed that place them between rotary positive displacement pumps and purely radial centrifugal pumps. They are interesting for many industrial applications since, for a given flow rate and a specifie...
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Volodymyr Blintsov,Sergey Nuzhniy
Pág. 28 - 38
Assessment of the level of speech information protection from leakage through acoustic and vibration channels is carried out according to international and national standards and in compliance with regulatory documents. To assess its security level, regu...
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Marhamat Zeinali, Sarallah Abbasi, Abolfazl Hajizadeh Aghdam
Pág. 288 - 295
Commencement and development processes of unsteadiness, caused by blade row tip leakage flow in a low speed axial compressor, are investigated and results are presented in this paper. Analyses are based on results obtained through numerical simulation of...
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Dileep Kumar, Dezhan Tu, Naifu Zhu, Reehan Ali Shah, Dibo Hou, Hongjian Zhang
Pág. 1 - 16
The conventional fixed acoustic sensors leak detection methods have been demonstrated to be very practical for locating leakages in water distribution pipelines. However, these methods demand proper installation of sensors, and therefore cannot be implem...
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