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| 1 | Spontaneous combustion liability between coal seams: A thermogravimetric study显示文摘The spontaneous combustion liability of coal can be determined by using different experimental techniques.These techniques are well-known in their application,but no certain test method has become a standard to prove the reliability of all of them.A general characterisation which included proximate and ultimate analyses,petrographic properties and spontaneous combustion tests(thermogravimetric analysis(TGA)and the Wits-Ehac tests)were conducted on fourteen coal and four coal-shale samples.The spontaneous combustion liability of these samples collected between coal seams(above and below)were predicted using the TGA and the Wits-Ehac tests.Six different heating rates(3,6,9,15,20 and 25C/min)were selected based on the deviation coefficient to obtain different derivative slopes and a liability index termed the TGspc index.This study found that coal and coal-shale undergo spontaneous combustion between coal seams when exposed to oxygen in the air.Their intrinsic properties and proneness towards spontaneous combustion differ considerably from one seam to the other.The Wits-Ehac test results agreed with the TGspc results to a certain extent and revealed the incidents of spontaneous combustion in the coal mines. | Moshood Onifade Bekir Genc Samson Bada | 2020 | International Journal of Mining Science and Technology2020，30，5： | 6 |
| 2 | Electrostatic concentration of phosphate flotation concentrate显示文摘The concentration of phosphate flotation concentrate with P2O5 grade lower than the commercially acceptable phosphate quality was upgraded in the use of tribo-electrostatic technique. The concentration of the flotation concentrate stream was conducted under both triboelectrification and inductive charging mechanism. Mineralogical analysis reveals that the phosphate ore utilized was dominated mainly by fluorapatite, crandallite, wavellite, and with quartz as the major gangue mineral. Flotations concentrate of about 28.87% P2O5 was obtained from the reverse flotation technique, after conditioning the phosphate ore at 80% passing 150 lm under Lilafloat. Constant parameters such as à6 kV charging voltage, 25 kV separating voltage, inlet air, different charger rotary speed and splitter distances were investigated. Commercially accepted grade of 35.50% P2O5 was attained after the second stage of separation with a recovery of 12.26%, another phosphate product of 34.02% P2O5 and 85.19% was also recovered under the same condition. Single stage of separation also shows a significant increase in the grade of the product obtained, with 33.41% P2O5 and 84.07% recovery achievable. The practicability of tribo-electrostatic separation technique for upgrading flotation concentrates resulted in a significant increase in grade for <150 lm product that do not meet the viable grade. | Bada Samson Gcanga Sandi Falcon Lionel Falcon Rosemary Makhula Mpho | 2013 | International Journal of Mining Science and Technology2013，23，3： | 4 |
| 3 | Effect of reverse flotation on magnetic separation concentrates显示文摘Reverse flotation studies on magnetite samples have revealed that the use of starch as a depressant of Fe-oxides has a hydrophilic effect on the surface of Fe-bearing silicates and significantly decreases Fe in the silica-rich stream when used in combination with an amine (Lilaflot D817M). In this study, the effect of reverse flotation on the optimization of products obtained from magnetic separation was investigated. Two different magnetic samples, zones 1 and 2, were milled to <75 μm and then subjected to low intensity magnetic separation (LIMS). The LIMS test conducted on the <75 μm shown an upgrade of 46.40wt% Fe, 28.40wt% SiO 2 and 2.61wt% MnO for zone 1 and 47.60wt% Fe, 29.17wt% SiO 2 and 0.50wt% MnO for zone 2. Further milling of the ore to <25 μm resulted in a higher magnetic-rich product after magnetic separation. Reverse flotation tests were conducted on the agitated magnetic concentrate feed, and the result shows a significant upgrade of Fe compared to that obtained from the non-agitated feed. Iron concentrations greater than 69%, and SiO 2 concentrations less than 2% with overall magnetite recoveries greater than 67% and 71% were obtained for zones 1 and 2, respectively. | S.O. Bada A.S. Afolabi M.J. Makhula | 2012 | International Journal of Minerals,Metallurgy and Materials2012，19，8： | 4 |
| 4 | Statistical analysis and concentration of iron ore using Longi LGS 500 WHIMS显示文摘A Longi LGS 500 wet high intensity magnetic separator(WHIMS) was used to concentrate a fine, low grade South African hematite ore. The ore was prepared into different size fractions and was subjected to changes in pulp density, magnetic field intensity and pulsation frequency which followed a 33 full factorial matrix. The concentrate mass yield and Fe grade were selected as the dependent responses to the changes. The analysis of variance(ANOVA) shows that the variables investigated are significant to the material's response to magnetic separation. This significance was in the order of magnetic field intensity followed by pulsation frequency and then pulp density. It was also noted that a single stage magnetic separation has a potential to upgrade a feed( 75 lm and 40% Fe) to a 55% Fe grade, as the pulsation frequency increases. In addition, the model predictions and actual data were in good agreement, reporting regression coefficients within acceptable ranges. | Makhula M.J. Falcon R.M.S. Bergmann C.P. Bada S.O. | 2016 | International Journal of Mining Science and Technology2016，26，5： | 2 |
| 5 | 6--2,4-dioxo-5-hexenoic acid ethyl ester a novel diketo acid derivative which selectively inhibits the HIV-1 viral replication in cell culture and the ribonuclease H activity in vitro显示文摘 | TRAMONTANO E ESPOSITO F BADAS R | 2005 | Antiviral Res2005，65，2： | 1 |
| 6 | Robust control and fault detection synthesis with application to tractorsemitrailer automatic steering 显示文摘 | Mammar S Bada V Koenig D | 2000 | Proceedings of the 2000 IEEE2000，19，9： | 1 |
| 7 | Subtotal corpectomy versus laminoplasty for multilevel cervical spondylotic myelopathy显示文摘 | Eiji Bada MD Shozo Suzuki MD Phi Atsunori Ka lazawa MD | 2001 | Spine2001，26，13： | 1 |
| 8 | Prognostic significance ofcerebrospinal fluid cyclic adenosine monophosphate in neonatal asphyxia显示文摘 | Pourcyrous M Bada HS Yang W | 1999 | J Pediatr1999，134，1： | 1 |
| 9 | Neu robiologicrisk score and hmg- term development al out comes of premature infants, birth weight less than 1250 grams显示文摘 | Nuntnarumit P Bada H S Korones SB | 2002 | J M ed As soc Thai( S0125 -2208 )2002，85，4： | 1 |
| 10 | Distribution and possible roles of aqua porin-9 in the brain 显示文摘 | BADA REGLI L | 2004 | Neurosciences2004，，129： | 1 |
| 11 | A Search for Endogenous amino acids in Martian Meteorite ALH-84001显示文摘 | BADA J L GLAVIN D P MCDONALD G D | 1998 | Science1998，279，： | 1 |
| 12 | Mean arterial blood pressure changes in premature infants and those at risk for intraventricular hemorrhage显示文摘 | Bada HS Korones SB Perry EH | 1990 | J Pediatr1990，117，4： | 1 |
| 13 | Prognostic significance of cerebrospinal fluid cyclic adenosine monophosphate in neonatal asphyxia显示文摘 | Pourcyrous M Bada HS Yang W J | 1999 | J Pediatr1999，134，1： | 1 |
| 14 | Frequent handling in the neonatal intensive care unit and intraventricular hemorrhage 显示文摘 | Bada HS Korones SB Perry EH | 1990 | J Pediat1990，117，11： | 1 |
| 15 | 6- -2, 4-dioxo-5-hexenoic acid ethyl ester a novel diketo acid derivative which selectively inhibits the HIV-1 viral replication in cell culture and the ribonuclease H ac- tivity in vitro 显示文摘 | Tramontano E Esposito F Badas R | 2005 | Antiviral Res2005，65，2： | 1 |
| 16 | Protective factors can mitigate behavior problems after prenatal cocaine and other drug exposures显示文摘 | Bada H S Bann C M Whitaker T M | 2012 | Pediatrics2012，130，6： | 1 |
| 17 | Marine sediments: dating by the racemization of amino acids显示文摘 | Bada J L Luyendyk B P Maynard J B | 1970 | Science1970，170，： | 1 |
| 18 | Amino acids in equatorial Pacific Ocean water 显示文摘 | LEE C BADA J L | 1975 | Earth and Planetary Science Letters1975，26，1： | 1 |
| 19 | Trimetazidine in Geriatric Patients with Stable Angina Pectoris: The Tiger Study 显示文摘 | KOlbel F Bada V | 2003 | Int J Clin Pract2003，57，10： | 1 |
| 20 | Dissolved amino acids in the equatorial Pacific, the Sargasso Sea, and Biscayne Bay 显示文摘 | LEE C BADA J | 1977 | Limnology and Oceanography1977，22，3： | 1 |
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