Mössbauer and XRD Comparative Study of Host Rock and Iron Rich Mineral Samples from Paz del Rio Iron Ore Mineral Mine in Colombia

ICAME 2003 ◽  
2004 ◽  
pp. 395-402
Author(s):  
M. Fajardo ◽  
G. A. Pérez Alcázar ◽  
A. M. Moreira ◽  
N. L. Speziali
Keyword(s):  
Comparative Study ◽  
Host Rock ◽  
Iron Ore ◽  
Del Rio

Mössbauer and XRD Comparative Study of Host Rock and Iron Rich Mineral Samples from Paz del Rio Iron Ore Mineral Mine in Colombia

2004 ◽  
Vol 156/157 (1-4) ◽  
pp. 395-402 ◽  
Author(s):  
M. Fajardo ◽  
G. A. Pérez Alcázar ◽  
A. M. Moreira ◽  
N. L. Speziali
Keyword(s):  
Comparative Study ◽  
Host Rock ◽  
Iron Ore ◽  
Del Rio

Comparative study of iron ore characterisation using a scanning electron microscope and optical image analysis

2013 ◽  
Vol 122 (4) ◽  
pp. 217-229 ◽  
Author(s):  
E. Donskoi ◽  
J. R. Manuel ◽  
P. Austin ◽  
A. Poliakov ◽  
M. J. Peterson ◽  
...  
Keyword(s):  
Image Analysis ◽  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Comparative Study ◽  
Iron Ore ◽  
Optical Image ◽  
Scanning Electron

XIII.—A Comparative Study of the Cytoplasmic Components during the Oogenesis of Dog, Cat, and Rabbit

1948 ◽  
Vol 63 (2) ◽  
pp. 200-212 ◽  
Author(s):  
I. Zlotnik
Keyword(s):  
Comparative Study ◽  
Germ Cells ◽  
Nuclear Changes ◽  
Del Rio ◽  
Detailed Work

The present paper gives an account of the behaviour of the Golgi material, mitochondria, and nucleolar extrusions during the oogenesis of dog, cat, and rabbit. So far as the writer is aware there is no previous detailed work on the cytoplasmic components of the female germ-cells of the animals investigated.R. Vander Stricht (1911) dealt with the oogenesis of the cat; O. Vander Stricht (1923) has made a comparative study of oogenesis of mammals, including the dog and the cat; P. del Rio Hortega (1913) described the behaviour of the Golgi material, and H. von Winiwarter (1900) studied the nuclear changes during oogenesis of the rabbit; H. von Winiwarter and G. Sainmont (1909) dealt with nuclear metamorphosis during the oogenesis of the cat; finally J. Nihoul (1926), in his paper on the rabbit, described the Golgi material during oogenesis. All the papers quoted, apart from those which deal with the nuclear changes, are either incomplete surveys, or the methods used are insufficiently delicate to reveal changes shown by modern techniques.

A Comparative Study of Ultra-Fine Iron Ore Tailings from Brazil

2010 ◽  
Vol 32 (1) ◽  
pp. 47-59 ◽  
Author(s):  
Ana Paula Wolff ◽  
Geraldo Magela da Costa ◽  
Flavio de Castro Dutra
Keyword(s):  
Comparative Study ◽  
Iron Ore ◽  
Iron Ore Tailings ◽  
Fine Iron

Teaching Narratives of Women’s Inner Exile in Spain and Chile

2019 ◽  
pp. 206-217
Author(s):  
Lisa DiGiovanni
Keyword(s):  
Women Writers ◽  
Comparative Study ◽  
Close Reading ◽  
Political Systems ◽  
Gendered Violence ◽  
Almudena Grandes ◽  
Del Rio ◽  
Franco Dictatorship ◽  
Chilean Women ◽  
Pinochet Dictatorship

By examining how contemporary Spanish and Chilean women writers represent dictatorial pasts and the experience of inner exile, this essay sheds light on the link between political and gendered violence underpinning the Franco dictatorship in Spain (1939-1975) and Pinochet dictatorship in Chile (1973-1989). Without collapsing difference, we address political systems and artistic movements within a wider cultural, political and historical framework. Through a close reading of El lector de Julio Verne by Spanish novelist Almudena Grandes and Óxido de Carmen by Chilean author Ana María del Río, we gain a platform to ask questions that move beyond a monocultural or national standpoint and to explore how authors have responded to similar struggles. A transatlantic comparative study of these texts not only helps us to understand how the regimes’ violence was shaped by related ideologies, but also how literature might intervene, expose and subvert such violence through the reconstruction of silenced memories of resistance.

scholarly journals Mineralogical characterization and comparative study of two processing methods of iron ore from the Anini deposit (NE Algeria)

2019 ◽  
Vol 28 (1) ◽  
pp. 11-18
Author(s):  
R. Chaabia ◽  
A. Benselhoub ◽  
M. Bounouala ◽  
A. Makhlouf ◽  
Á. G. Rodrigo ◽  
...  
Keyword(s):  
Comparative Study ◽  
Iron Content ◽  
Iron Ore ◽  
Mineral Resources ◽  
The Other ◽  
Mineralogical Characterization ◽  
Iron Mine ◽  
The One ◽  
Representative Samples ◽  
Wet Sieving

The objective of this article is to study the possibilities of enrichment of the iron ore from Jebel Anini and to develop these mineral resources in order to use them in the metallurgical complex of Annaba. Representative samples were taken from Anini iron mine located in the northwest of the Wilaya of Setif. After sampling, mineralogical, chemical and size particles’ characterization was carried out. However, the analyzes performed by (XRD, SEM and FX) show that the ore is iron type hematite clay and siliceous gangue. The average contents of Fe2O3, SiO2 and Al2O3 are respectively 55%, 26.20% and 12%. The data collected after several preliminary tests of enrichment by washing (wet sieving) of the ore reveal significant results in iron content is 62% Fe2O3, 2 to 3% of quartz and 2 to 3% of clay. The tests conducted by wet magnetic separation show, on the one hand, remarkable results in iron content of 65.11% against 2.46% SiO2 and1.73% Al2O3 and , on the other hand, that the enriched product meets the standards required by metallurgy, releases from processes can be used as an addition in the preparation of cement.

scholarly journals ANDRÉS MANUEL DEL RIO, DISCOVERER OF VANADIUM

1997 ◽  
Vol 5 (5) ◽  
pp. 1-6
Author(s):  
Lavinel G. IONESCU
Keyword(s):  
Mexico City ◽  
Iron Ore ◽  
Royal Academy ◽  
Mining Engineering ◽  
Del Rio

Andres Manuel Del Rio was born in Madrid in 1764 and died in Mexico City in 1849. He studied mineralogy, geology, metallurgy, and mining engineering at the Royal Academy of Mines of Almaden and the Patriotia Seminary of Vergara. In 1871, with a stipend from the Spanish Crown, he continued his studies in Paris, Freiberg, Chemnitz, and other scientific centers throughout Europe, particularly in metallurgy. In 1794 at the invitation of Don Fausto Delhuyar, who together with his brother Juan Jose Delhuyar discovered tungsten in 1783, Andres Manuel Del Rio went to Mexico where he was a professor at the SahooZ of Mines for more than fifty years, until his death. In 1801, while analyzing a lead mineral from Zimpan, Hidalgo, Mexico, he discovered a.mew element that he called pancuronium or erythronium, because of the red colors, aharaateris·tia of its salts. In 183Z, the Swedish chemist NiZs Gabriel Sez>fstz>IJm z>edisaovered erythronium in an iron ore from Taberg, Smaland, Sweden, and named it vanadium in honor of the Scandinavian goddess Vanadis.

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