Abrtnxcl-In this contribution wa p r ~ p a ~ now1 Coded Modulation auhtad Genatic Algorithm based hrfultirwr Detection (CM-GA-MUD) scheme for synchronous CDhrIA systems. The parfonnnnce of the p r o p 4 acheme WIU invatigatad ruing QusdraturaPhsraShift-Keying (QPSK), when communiuting over AWGN m d narrowband Rqyleigh fading chnnneb. When cumpard with the optimum MUD acheme. the CA-MUD subsytta...

ABSTRACT- Over the past 50 years, oil mulching has been a common technique for sand dune stabilization in the southwest of Iran (Khuzestan province). However, concerns over the release of heavy metals from oil mulching have led to the search for alternative mulches that are capable of stabilizing sand dunes without environmental hazards. This study investigates the feasibility of using sugarcan...

In the Bayer process of extraction of alumina from bauxite, the insoluble product generated after bauxite digestion with sodium hydroxide at elevated temperature and pressure is known as ̳red mud‘ or ̳bauxite residue‘. Enormous quantity of red mud is generated worldwide every year posing a very serious and alarming environmental problem. This paper describes the production and characterization ...

There is little question that current role-playing MUD systems provide entertainment for their users. Nevertheless, experience with these systems, however entertaining, often falls short of the compelling, rich and varied experiences we associate with dramatic art. This limitation is in part due to the nature of control in MUDs. Control within a MUD is, by de nition, distributed; unlike convent...

An investigation was conducted to estimate approximate production and assess the marketing of mud crab in the south-western region of Bangladesh. Crab culture was done by hardening and fattening collected from the natural source. Most of the fattening farms were 0.2 to 2 acres. Fattening and hardening period varied from 10 to 30 days. The Sundarban mangrove, tidal rivers, estuaries, canals, shr...

Based on the minimum mean squared error (MMSE) between the data stream and the linear combiner output, a new multiuser detection (MUD) algorithm that combines space–time (ST) processing and antenna array on directsequence CDMA signals is proposed. The proposed ST-MUD algorithm is proved to be equivalent to two existing MMSE-based ST-MUD algorithms, and the theoretical BER performances for all t...

This study designed the effective fluid loss agents for controlling loss. Various polymers have been used as additives using natural polymer from cassava starch. Bulky Cassava was cleaned with water and it grounded, filtered, dried, sieved to obtain suitable starch additive size. filtration mud cake test carried out under Low Pressure Temperature (LPLT) apparatus. The sample separated accommoda...

This paper analyzes performance of optimal channel estimation and multiuser detection (MUD) in a block-fading code-division multiple-access (CDMA) channel on the assumptions of random spreading and large-system limit, by using the replica method developed in statistical mechanics. The authors find that the asymptotic spectral efficiency of the linear minimum mean-squared error (LMMSE) MUD which...

Drilling mud is a necessary component of drilling operations. There have been notable attempts to enhance the filtration and rheological properties increase cutting carrying capacity water-based (WBM) using nanoparticles (NPs). This study investigates how varying Al2O3 concentrations affect fluids. In this study, different muds were produced bentonite (2.8g) without nanoparticle, 50% (1.4g) Al2...

Abstract Rheological and filtration properties of drilling fluid contribute a vital role in successful operations. parameters such as apparent viscosity (AV), plastic (PV), yield point (YP) gel strength fluids are very essential for hydraulic calculations lifting drill cuttings during the operation. Control loss volume is also important cost effective Therefore, main goal this research to impro...