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| 1 | Characterization and application of tourmaline and beryl from Brazilian pegmatite in adsorption process with divalent metals显示文摘In this study,the original tourmaline and beryl mineral samples have been collected from a Brazilian pegmatite.The objective of this study was to examine the adsorption behavior of Brazilian ciclosilicate samples,towards divalent metals(Pb 2+,Mn 2+,and Zn 2+) in ethanol solution has been studies by a batch technique.The ciclosilicate samples were characterized by elemental analysis,Fourier transform infrared spectroscopy,helium picnometry,mercury porosity,and nitrogen adsorption-desorption.The Langmuir expression for adsorption isotherm was applied in order to determine the adsorption capacity to form a monolayer and the constant related to the adsorption intensity.In aqueous solution there was a significant adsorption increase with the temperature and pronounced synergistic effects were observed.The maximum number of moles adsorbed was determined to be 12.48 and 11.49 mmol/g for systems Pb 2+ /beryl and Pb 2+ /tourmaline,respectively.The energetic effects caused by metal cations adsorption were determined through calorimetric titrations.Thermodynamics indicated the existence of favorable conditions for such Pb 2+-,Mn 2+-,and Zn 2+-OH interactions. | Denis L.Guerra Silze P.Oliveira Ricardo A.R.Silva Victor Leidens Adriano C.Batista | 2012 | International Journal of Mining Science and Technology2012，22，5： | 3 |
| 2 | Gene therapy Promise, pitfalls, and prognosis显示文摘 | Leiden J | 1995 | N Engl J Med1995，333，： | 1 |
| 3 | Structure, function, and regulation of troponin C 显示文摘 | Parmacek MS Leiden JM | 1991 | Circulation1991，84，3： | 1 |
| 4 | Safe and effective regulation by gene gun administration of an erythropoietin-encoding DNA plasmid显示文摘 | Conover J Leiden JM | 1999 | Hum Gene Ther1999，10，： | 1 |
| 5 | Risk factors for incident retinopathy in a diabetic and nondiabetie population:the Hoom study 显示文摘 | van Leiden HA Dekker JM Moll AC | 2003 | Arch Ophthalmol2003，121，： | 1 |
| 6 | Blood pressure,lipids,and obesity are associated with retinopathy:the Hoorn study显示文摘 | Van Leiden HA Dekker JM Moll AC | 2002 | Diabetes Care2002，25，： | 1 |
| 7 | Current situation of donation after circulatory death in European countries 显示文摘 | Dominguez-Gil B Haase-Kromwijk B Van Leiden H | 2011 | Transpl Int2011，24，7： | 1 |
| 8 | Multidimentionality of Leader-mem- ber Exchange an Empirical Assessment Through Scale Develop- ment 显示文摘 | LEIDEN R C MARILYN J | 1998 | Journal of Management1998，，24： | 1 |
| 9 | Somatic gene therapy for cardiovascular disease: Recent advances显示文摘 | BARR E LEIDEN J | 1994 | Trends Cardiovasc Med1994，4，： | 1 |
| 10 | Gene and stem cell therapy显示文摘 | Kaji EH Leiden JM | 2001 | JAMA2001，285，： | 1 |
| 11 | Risk factors for incident retinopathy in a diabctie and nondiabetic population: the Hoorn study 显示文摘 | van Leiden HA Dekker JM Moll AC | 2003 | Arch Ophthahnol2003，121，2： | 1 |
| 12 | Transcriptional regulation of T lymphocyte development and function 显示文摘 | Kuo C T Leiden J M | 1999 | Annu Rev Immunol1999，17，： | 1 |
| 13 | Current situation of donation after circulatory death in European countries显示文摘 | Domnguez-Gil B Haase-Kromwijk B Van Leiden H | 2011 | Transpl Int2011，24，7： | 1 |
| 14 | Blood pressure, lipids, and obesity are associated with retinopathy: the hoorn study显示文摘 | Van Leiden HA Dekker JM Moll AC | 2002 | Diabetes Care2002，25，8： | 1 |
| 15 | Risk factors for incident retinopathy in a diabetic and nondiabetic population: the Hoom Study 显示文摘 | Van Leiden HA Dekker JM Moll AC | 2003 | Arch Ophthalmol2003，121，： | 1 |
| 16 | Perceived stress in medical, law and graduate student显示文摘 | Heinz M Fahey S Leiden L | 1984 | Journal of Medical Education1984，，： | 1 |
| 17 | Structure,function,and regulation of troponinC显示文摘 | Parmacek MS Leiden JM | | Circulation0，991，： | 1 |
| 18 | Risk factors for incident retinopathy in a diabetic and nondiabetic population:the hoorn study显示文摘 | van Leiden HA Dekker JM Moll AC | 2003 | Arch Ophthalmol2003，121，： | 1 |
| 19 | Function of GATA transcription factors in preadipoeyte adipocyte transition显示文摘 | Tong Q Dalgin G Xu H Ting C N Leiden J M Hotamisligil G S | 2000 | Science2000，290，： | 1 |
| 20 | Structure,function,and regulation of troponin C显示文摘 | Parmacek MS Leiden JM | 1991 | Circulation1991，84，3： | 1 |
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