نتایج جستجو برای: excavating mud

تعداد نتایج: 7260  

2011
Sema Tekin Serhat Akin

Formation temperature is an important parameter in geothermal drilling since it affects drilling fluid, operations and equipment, through mud temperatures. In this study formation temperatures of the five geothermal wells in Germencik-Omerbeyli field were estimated by using mud inlet and outlet temperatures obtained during drilling. GTEMP wellbore thermal simulation model was used to estimate t...

Journal: مهندسی دریا 2006
Ali Oveisy, Mohsen Soltanpour,

The present paper offers a numerical model which can be applied for the simulation of wave height distribution on a 2-D horizontal soft mud layer. The model is based on mild slope equations and it includes combined wave refraction, diffraction, reflection and breaking. The high energy dissipation of wave height due to the presence of fluid mud layer has also been simulated. Wave height attenuat...

Journal: :The Israel Medical Association journal : IMAJ 2017
Noémi Gyarmati Ágota Kulisch András Németh Annamária Bergmann József Horváth Zsuzsanna Mándó Ágnes Matán Erika Szakál Tímea Sasné Péter Dóra Szántó Tamás Bender

BACKGROUND Heat therapy is one of the most popular non-pharmacological treatments for osteoarthritis of the hand. OBJECTIVES To investigate the therapeutic and chemical effects of Hévíz mud on patients with hand osteoarthritis. METHODS We randomly assigned 47 patients with mild-to-moderate hand osteoarthritis to two groups. Patients in group 1 (n=23) received Hévíz mud applied directly to b...

Journal: :IEEE transactions on neural networks 2001
Sheng Chen Ahmad K. Samingan Lajos Hanzo

The problem of constructing an adaptive multiuser detector (MUD) is considered for direct sequence code division multiple access (DS-CDMA) signals transmitted through multipath channels. The emerging learning technique, called support vector machines (SVM), is proposed as a method of obtaining a nonlinear MUD from a relatively small training data block. Computer simulation is used to study this...

2012
Eric Cayeux

For complex drilling operations with narrow geo-pressure windows, it is not uncommon to have problems with formation fracturing, due to erroneous mud pump management. To assist the driller in managing the circulation, it is possible to limit both the acceleration of the mud pumps whilst changing the flow-rate as well as the actual flow-rate, to avoid generating downhole pressure above the fract...

Journal: :CoRR 2016
Yushu Zhang Kewu Peng Jian Song Shuang Chen

In uplink block-fading multiple access channel (BFMAC), the advantage of multiuser diversity (MUD) can be taken to achieve higher system throughput. In this letter, with rate constraints for all users and only channel state information available at the receiver assumed, we demonstrate that nonorthogonal multiple access (NOMA) outperforms the counterpart of orthogonal multiple access (OMA) via e...

2012
Rajiv Rastogi

Earth is one among five elements having an immense impact on human body. It has been adopted as a treatment modality, i.e. mud therapy in naturopathy. It is a simple, cost effective and efficacious treatment used in the treatment of various disorders. Mud is used as a medicine since long as various references are found available in ancient texts indicating its therapeutic uses. Mud has various ...

Kick occurrence is a possible event during a drilling process. It is required to be handled immediately using a well control method to avoid blowout, financial losses and damages to the drilling crew. Several methods including driller, wait and weight, and concurrent are applicable in the drilling industry to control a well during a kick incident. In this study, typical well control methods wer...

2013
K. Rasadurai

Multi carrier modulation (MCM) technique is essential for next generation wireless mobile communication system, which achieves high data rate with high spectral efficiency and high flexibility. Orthogonal Frequency Division multiplexing (OFDM) introduces multicarrier concept in Code Division Multiple Access (CDMA) to give rise to novel concept of MC-CDMA system. The OFDM mitigates multiple acce...

2012
Hayrunnisa Nadaroglu Ekrem Kalkan

This study on the removal of cobalt ions from aqueous solutions by red mud was conducted in batch condition. Its objective was to investigate the possibility of using red mud waste material as an alternative to high cost commercial adsorbent materials for the removal of cobalt from aqueous solution. In this study, batch experiments were carried out for the adsorption of cobalt onto red mud indu...

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