نتایج جستجو برای: kinetics of static recovery

تعداد نتایج: 21192428  

Journal: :journal of mining and environment 2013
asghar azizi ali dehghani seyyed zioddin shafaei

abstractthe purpose of this study was to investigate the controllable operating parameters influence, including ph, solid content, collector, co-collector, and depressant dose, and conditioning time, on apatite flotation kinetics. four first order flotation kinetic models are tested on batch flotation time-recovery profiles. the results of batch flotation tests and the fitting of first-order ki...

Sulfide lead resources are being depleted and the exploitation of carbonate lead deposits is now the main focus of lead mining. Cerussite, PbCO3, is majorly discarded to tailing damps because it is difficult to be processed by flotation in lead concentration units. This paper not only investigates the optimization of cerussite flotation, but it also proposes a model for predict...

M.Ghorbani, N.Najaf- Zadeh,

The effects of carbon content on the dynamic and static softening mechanisms of Ti microalloy steels were investigated both in ferrite and austenite regions. &#10The results obtained showed that recrystallization rate decreased as the percentage of carbon content was increased from 0.0035 to 0.110. This is due to the Ti(CN) and TiC precipitates and also the free carbon content. In the ferrite r...

Journal: :روش های عددی در مهندسی (استقلال) 0
عباس نجفی زاده n.najaf- zadeh مسعود قربانی m.ghorbani

the effects of carbon content on the dynamic and static softening mechanisms of ti microalloy steels were investigated both in ferrite and austenite regions. the results obtained showed that recrystallization rate decreased as the percentage of carbon content was increased from 0.0035 to 0.110. this is due to the ti(cn) and tic precipitates and also the free carbon content. in the ferrite regio...

As part of the development of equipment and innovative technology for the process flow-sheet, a study on the selection of good resin for uranium uptake is ongoing. Both static and dynamic column equilibrium testing upon synthetic and Gattar pregnant leach solutions (PLS) were carried out to estimate the change of total capacity and breakthrough capacity of the commercial macroporous anion excha...

Journal: :journal of chemical and petroleum engineering 2011
eghbal sahraei mohammad amin safarzadeh seyyed alireza tabatabaei nejad

fractional flow analysis confirms the advantages of surfactant alternative gas injection (sag) in enhanced oil recovery, but an adsorption phenomenon that has been affected by several factors, weakens the effectiveness of sag injection. in this study, the effects of sacrificial agent, gas phase, and surfactant concentration on adsorption density on silica mineral were investigated by static and...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2011
Yuri E Nesmelov Roman V Agafonov Igor V Negrashov Sarah E Blakely Margaret A Titus David D Thomas

For many proteins, especially for molecular motors and other enzymes, the functional mechanisms remain unsolved due to a gap between static structural data and kinetics. We have filled this gap by detecting structure and kinetics simultaneously. This structural kinetics experiment is made possible by a new technique, (TR)(2)FRET (transient time-resolved FRET), which resolves protein structural ...

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The purpose of this study was to determine the relationship between changes of some of the cardiorespiratory factors during submaximal activity with slow component of Vo2 after static and dynamic stretching in 16 active women from physical education college ( Mean ± SD : age, 23.87± 1.62 yr ; weight, 57.20 ± 7.84 kg ; height, 163.46 ± 6.23 cm; body fat % ,23.96 ± 2.70 and Vo2max, 42.15 ± 3.4...

2006
D. M. Simons E. M. Gardner P. I. Lelkes

Simons, D. M., E. M. Gardner, and P. I. Lelkes. Dynamic culture in a rotating-wall vessel bioreactor differentially inhibits murine T-lymphocyte activation by mitogenic stimuli upon return to static conditions in a time-dependent manner. J Appl Physiol 100: 1287–1292, 2006. First published December 29, 2005; doi:10.1152/japplphysiol.00887.2005.— Depressed immune function is a well-documented ef...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2010
najeh alali mahmoud reza pishvaie vahid taghikhani

production of highly viscous tar sand bitumen using steam assisted gravity drainage (sagd) with a pair of horizontal wells has advantages over conventional steam flooding. this paper explores the use of artificial neural networks (anns) as an alternative to the traditional sagd simulation approach. feed forward, multi-layered neural network meta-models are trained through the back-error-propaga...

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