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A Crossroads for Social Entrepreneurship: Profits versus Ethics
Sandrine Fuentes,
Hugo
Valenzuela
-
Garcia
Open J. Bus. Manag.
Vol.7 No.2, April 19, 2019
DOI:
10.4236/ojbm.2019.72058
(PDF 358K)
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Elaboration of an Easy Aqueous Sol-Gel Method for the Synthesis of Micro- and Mesoporous
γ
-Al
2
O
3
Supports
Vincent Claude,
Hugo
Solis
Garcia
,
Cédric Wolfs,
Stéphanie D. Lambert
Adv. Mater. Phys. Chem.
Vol.7 No.7, July 25, 2017
DOI:
10.4236/ampc.2017.77023
(PDF 2769K)
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Effect of Pretreatment of Sulfide Refractory Concentrate with Sodium Hypochlorite, Followed by Extraction of Gold by Pressure Cyanidation, on Gold Removal
Alejandro
Valenzuela
,
Jesús L. Valenzuela,
José R. Parga
Adv. Chem. Eng. Sci.
Vol.3 No.3, July 04, 2013
DOI:
10.4236/aces.2013.33021
(PDF 1005K)
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Recovery of Gold and Silver and Removal of Copper, Zinc and Lead Ions in Pregnant and Barren Cyanide Solutions
Gabriela Figueroa,
Jesus L. Valenzuela,
Jose R. Parga,
Victor Vazquez,
Alejandro
Valenzuela
Mater. Sci. Appl.
Vol.6 No.2, February 12, 2015
DOI:
10.4236/msa.2015.62020
(PDF 2481K)
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A Generalization of Cramer’s Rule
Hugo
Leiva
Adv. Linear Algebra Matrix Theory
Vol.5 No.4, December 07, 2015
DOI:
10.4236/alamt.2015.54016
(PDF 297K)
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