• Title/Summary/Keyword: Peru

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Characteristics on the Occurrence of Oxidized Copper at Suparaura, Peru: Preliminary Study (페루 수빠라우라 산화동 산출지의 특성: 예비연구)

  • Kim, Eui-Jun;Heo, Chul-Ho;Koh, Sang-Mo
    • Economic and Environmental Geology
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    • v.44 no.1
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    • pp.11-20
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    • 2011
  • Geological survey on the occurrence of copper oxide in Suparaura area around Abancay in the south-central part of Peru had been carried out. Geology of the area is composed of granitoids such as granodiorite, tonalite and andesitic porphyry related to Tertiary igneous activity, Ferrobamba formation with Cretaceous limestone and sandstone in descending order. Red sandstone is widely distributed and emplaced with their attitude of $N70^{\circ}W$ strike and $60^{\circ}NE$ dip. Copper oxides were mineralized along the bedding plane of red sandstone with maximum width of 30 cm. Ore-body structure bounding red sandstone strata have different occurrence characteristics with generally known porphyry system in terms of alteration, mineral assemblage and occurrence mode. Therefore, it is thought to be stratiform sediment-hosted copper (SSC) deposits genetically corresponding to Mississippi-valley type from preliminary study.

Geology and Mineralization in Trapiche Cu-Mo Deposit, Apurimac State in Southeastern Peru (페루 남동부 아뿌리막주 트라피체 동-몰리브데늄 광상의 지질 및 광화작용)

  • Yang, Seok-Jun;Heo, Chul-Ho;Kim, You-Dong
    • Economic and Environmental Geology
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    • v.48 no.6
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    • pp.525-536
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    • 2015
  • Trapiche project corresponds to the advanced exploration stage which is thought to be a part of various porphyry copper deposits occurring in the margin of Andahuyalas-Yauri metallogenic belt. This deposit is genetically related to the monzonitic porphyry intrusion and Oligocene breccia pipe. Mineralization consists of primary sulfides such as pyrite, chalcopyrite, bornite, and molybdenite and secondary sulfides such as chalcocite, covellite and digenite. It occurs malachite, tenorite and cuprite as copper oxide. As a result of lixiviation or enrichment process, mineralization shows untypical zonation structure. Breccia and porphyry areas characterize the vertical zonation patterns. In the northern area, lixiviation zone, secondary enrichment zone, transitional zone and primary mineralized zone are distributed in northern area. In the western area of deposit, oxidation zone and mixed zones are narrowly occurred. Inferred resources of deposit is estimated to be 920 Mt @ 0.41% Cu with the cut-off grade of 0.15%.

Geology and Mineralization in Constancia Porphyry Cu-Mo Mine, Cusco State, Southeastern Peru (페루 남동부 쿠스코주 콘스탄시아 반암동-몰리브데늄 광산의 지질 및 광화작용)

  • Yang, Seok-Jun;Heo, Chul-ho
    • Economic and Environmental Geology
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    • v.49 no.3
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    • pp.193-199
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    • 2016
  • Constancia mine is a deposit developed within Andahuaylas-Yauri Cu-Mo-Au metallogenic belt, southeastern Peru and is located in the southwestern part of Abancay deformation zone structurally as the porphyry copper deposit type. Mineralized zone in Constancia mine are composed of leached zone, secondary enrichment zone(ca. 1% Cu), mixed zone, primary mineralized zone(ca. 0.5%), skarn zone(ca. 1.5% Cu) from the upper part. Main country rock is monzonitic porphyry. Leached zone are characterized by the precipitation of limonite and looks brown in the outcrop. Oxidized zone have green due to the occurrence of copper oxide and secondary enrichment zone are characterized by the occurrence of chalcocite. Skarn zone are characterized by the occurrence of magnetite and garnet. Now, Hudbay, Canadian mining company, have 100% share about Constancia mine and started to produce commercially from January, 2015.

The Historical Origin of the Conflict of the Aymara of Peru and Bolivia, Centered on Puno (페루 - 볼리비아 접경 푸노(Puno) 지역 아이마라(Aymara)원주민 종족갈등의 원인)

  • Cha, Kyung-Mi
    • Cross-Cultural Studies
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    • v.41
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    • pp.351-379
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    • 2015
  • In the Andes regions of Latin America continents, groups of diverse native tribes are intensively distributed.Among these tribes, the Aymara compose the most representative group of natives along with the Quechua. Especially, the Aymara who are concentrated on the border areas of Peru and Bolivia centered on Lake Titicaca have pursued common identity forming the same cultural area although they belong to different nations. In the meantime, the Aymara have maintained a sense of fellowship while emphasizing historicity and specialty, which are differentiated with groups of other natives based on a language constituting identity of the tribe. However, recently, focused on Puno State as the center of the border areas of both countries, the tribe's conflicts come to the surface. After being divided by the artificial boundary line, which was formed in the course of building modern countries after the independence, natives of Latin America started to emphasize differences simultaneously with cultural similarity in the frame of cooperation and competition. Together with the historical contexts, lately, focused on the border areas of Peru and Bolivia, as the same tribe came to be bound by the frameworks of different nations respectively, a new tribal conflict is being developed. Though the Aymara unite emphasizing cultural and historical specialty and recognizing them as one tribe, when they conflict with each other over inner interest, a tendency to form the identity of differentiation and distinction appeared even in the inside of the tribe. Usually, disorder between tribes seems to be originated from intertribal strife, which coexists in one region. In case of the Aymara of Peru and Bolivia, centered on Puno State where both countries maintain the border, an aspect that the fellowship of the tribe, which was established through old history changes into conflict structures by realistic conditions comes out. In understanding this point, this study analyzed the historical origin of the conflict of the Aymara and the deepened cause of the tribal disorder.

Traditional uses, phytochemistry and pharmacological profile of Bambusa arudinacea Retz

  • Soni, Vishal;Jha, Arvind Kumar;Dwivedi, Jaya;Soni, Priyanka
    • CELLMED
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    • v.3 no.3
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    • pp.20.1-20.6
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    • 2013
  • Bambusa arundinacea family Graminae, is one of the precious plant resources of the earth. It has played a significant role in human civilization since ancient times. It is tall sized tree growing throughout India, moist parts of India. It also occurs in Sri Lanka, Malaya, Peru and Myanmar. The different parts of this plant contain silica, cholin, betain, cynogenetic glycosides, albuminoids, oxalic acid, reducing sugar, resins, waxes, benzoic acid, arginine, cysteine, histidine, niacin, riboflavin, thiamine, protein, gluteline, contains lysine, methionine, betain, cholin, proteolytic enzyme, nuclease, urease. Various parts of this plant such as leaf, root, shoot and seed possess anti-inflammatory, antiulcer, anti-diabetic, anti-oxidant, anthelmintic, antifertility, antibacterial, insectisidal, antiarthritic, vessele protection etc. This review mainly focuses on the traditional, phytochemical and pharmacological information of Bambusa arundinacea.

Diversity and origin of bottle gourd, Lagenaria

  • Yuasa, Hiroshi
    • Proceedings of the Plant Resources Society of Korea Conference
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    • 2002.11b
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    • pp.13-14
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    • 2002
  • Bottle gourd, Lagenaria siceraria, is one of the oldest cultivated plants. To bigin with, its fruit was used as a complete liquid bottle or container. It was a very widespread cultivated plant in prehistoric times, for example (there) is a report from Peru as early as between 13,000 B.C and 11,000 B.C. The dug-out finds in Japan proved to be about 95,000 years old according to the $^{14}$ C analysis. The bottle grourd was the most important plant before the invention of pottery in many areas of Asia, New Guinea, Polynesia, America, and Africa. I would like to suggest that there should be “The Bottle Gourd Age” prior to the Pottery Age.(중략)

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A Comparative Study to Evaluate a Simple Method for the Management of Postoperative Bleeding Following Palatoplasty

  • Rossell-Perry, Percy;Schneider, William J.;Gavino-Gutierrez, Arquimedes M.
    • Archives of Plastic Surgery
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    • v.40 no.3
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    • pp.263-266
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    • 2013
  • Bleeding, is one of the most common postoperative complications after palatoplasty in patients with cleft palate. The purpose of this article is to present our experience using a Foley catheter balloon for perioperative palatoplasty bleeding management. A retrospective data analysis was performed for all cases of palatoplasty performed by the author from 1999 to 2012 that experienced postoperative hemorrhage. These patients were managed by utilizing posterior nasal compression with a Foley catheter balloon for the period 2006 to 2012. We have compared two methods (we use before 2006 the reoperative method) with regards to the later development of palatal fistulae and cases with reoperative hemostasis. The study found no statistically significant differences between the conventional and proposed method in relation to the development of palatal fistulae (P=0.7). These findings suggest that nasal packing using a Foley balloon is a safe and effective method for postoperative bleeding control after palatoplasty in patients with cleft palate.

A Study on the Store Compliance Verification for KT-1P Aircraft

  • Kim, Dae-wook;Kim, Chan-jo;Wu, Bong-gil
    • International Journal of Aerospace System Engineering
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    • v.2 no.2
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    • pp.87-91
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    • 2015
  • KT-1P for the Peru Air Force will be used as a utility aircraft with upgraded avionics equipment and arming capability based on KT-1 and KA-1. KT-1P should be shown for compatibility of new store loading configurations loaded with dispenser, bomb, and rocket based on aircraft-store compatibility test and evaluation procedures before KT-1P is operated as a light attack aircraft. The weapon system ground test for installation and flight test for envelope expansion including store separation are described in this paper, which was performed referring 'seek eagle program' under MIL-HDBK-1763 and MIL-HDBK-244A.

Nutritional value and the kaempferol and quercetin contents of quinoa (Chenopodium quinoa Willd.) from different regions

  • Lee, Min-Jung;Sim, Ki Hyeon
    • Korean Journal of Food Science and Technology
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    • v.50 no.6
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    • pp.680-687
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    • 2018
  • This study compared the nutritional value of quinoa cultivated in different regions, i.e., Peru (PQ), United States (UQ), and Korea (KQ), focusing on their proximate and nutrient compositions and functional components. Moisture, protein, lipid, and ash contents were highest in KQ, and the carbohydrate content was the highest in UQ. KQ had the highest amount of total amino acids, especially lysine. KQ had the lowest levels of Na but the highest levels of K, P, Fe, Mg, Zn, and Mn. The antioxidant compounds, quercetin and kaempferol were not detected in KQ, which consequently had the lowest total phenolic and total flavonoid contents (TPC and TFC, respectively). These values were comparatively higher in UQ. Meanwhile, PQ had the highest TPC and TFC values as well as kaempferol content, but lacking quercetin. These results demonstrate that the nutritional value of quinoa varies according to the region in which it is cultivated.

La Variación de /ɾ/ en Posición Posnuclear en el Español Andino del Perú

  • Kim, Kyoung-Lai
    • Iberoamérica
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    • v.21 no.1
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    • pp.127-158
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    • 2019
  • In this paper, the variation in coda /ɾ/ is analyzed in the Spanish of the Tupe district in Peru. The work was carried out on the corpus of 24 semi-structured interviews. Four variants of /-ɾ/ were distinguished and 1920 tokens were analyzed. Praat was used to recognize and describe the variants and two statistical analysis were carried out: descriptive analysis and probabilistic analysis using the statistical program Goldvarb X. The results obtained from the analysis show that the assibilated variant is favored in the prepausal position and before homorganic consonants. The frequency of occurrence was very low before other consonants. Regarding the social factor that contributes to the assimilated variant, the young and middle-aged men (from 20 to 60), those who did not live more than a year on the Peruvian coast and male speakers favor it.