Results 251 to 260 of about 904,712 (293)
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Hydrometallurgy, 2014
Abstract In this research, chloride–hypochlorite leaching of gold from a highly refractory pyritic concentrate was conducted and effects of stirring speed, temperature and particle size on the leaching rate were investigated. Results showed that the particle size had a significant positive effect on the gold recovery.
Shahram Raygan, Fereshteh Rashchi
exaly +2 more sources
Abstract In this research, chloride–hypochlorite leaching of gold from a highly refractory pyritic concentrate was conducted and effects of stirring speed, temperature and particle size on the leaching rate were investigated. Results showed that the particle size had a significant positive effect on the gold recovery.
Shahram Raygan, Fereshteh Rashchi
exaly +2 more sources
An adaptive vector quantizer based on the Gold-Washing method for image compression
IEEE Transactions on Circuits and Systems for Video Technology, 1994The VLSI architecture for an adaptive vector quantizer is presented. The adaptive vector quantization method does not require a-priori knowledge of the source statistics and the pre-trained codebook. The codebook is generated on the fly and is constantly updated to capture local textual features of data.
Oscal T.-C. Chen +2 more
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The Gold-Washing algorithm (II): optimality for φ-mixing sources
Proceedings of 1995 IEEE International Symposium on Information Theory, 2002Two versions of tire Gold-Washing data compression algorithm, one with codebook innovation interval and the other with finitely many codebook innovations, are considered. The corresponding optimality results are proved for stationary, /spl phi/-mixing sources.
null Zhen Zhang, null En-hui Yang
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Optimization of flushing sluice flow in hydrohoist gold washing machines
Journal of Mining Science, 2012The lab and commercial tests have validated basic parameters of flow at locks of high capacity sluice box with riffles. The found relations between the Darcy coefficient, Reynolds numbers and Froude numbers allow obtaining balanced design and technology parameters for industrial sluice boxes of the type of PGSH-II-50.
V. S. Litvintsev +2 more
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Green Gold or Green Wash: Environmental Consequences of Biofuels in the Developing World*
Review of Agricultural Economics, 2008Previous articles in this session have addressed the market and food security consequences of the current rapid expansion in demand for liquid biofuels. This article explores the potential consequences for the environment in developing countries. By far, the most important impacts arise from the increase in prices of major agricultural commodities and ...
Gerald C. Nelson, Richard D. Robertson
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IEEE Transactions on Circuits and Systems for Video Technology, 2000
The gold-washing (GW) mechanism is an efficient on-line codebook refining technique for adaptive vector quantization (AVQ). However, the mechanism is essentially not suitable for hardware implementation. We propose a hardware-oriented GW-AVQ scheme based on the least-recently-used (LRU) strategy for codevector selection and the block-data-interpolation
Shaou-Gang Miaou, Wen-Song Chung
openaire +1 more source
The gold-washing (GW) mechanism is an efficient on-line codebook refining technique for adaptive vector quantization (AVQ). However, the mechanism is essentially not suitable for hardware implementation. We propose a hardware-oriented GW-AVQ scheme based on the least-recently-used (LRU) strategy for codevector selection and the block-data-interpolation
Shaou-Gang Miaou, Wen-Song Chung
openaire +1 more source
Evalutation of the applicability of the washing process in heap leaching areas in gold mining
2023Bu çalışmada,yığın liç alanlarının rehabilitasyonunda yeraltı suyu ile yıkama yaklaşımınınuygunluğu, yığın liç yöntemi (içerisinde belli derişimlerde sodyum siyanürkimyasalı bulunan çözeltinin taban geçirimsizliği sağlanmış alanlara serilencevher ile temasının sağlanması suretiyle altının çözünerek solüsyon içerisinealınmasıdır) ile altın madenciliği ...
Azgın, Şükrü Taner +1 more
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