Revista Espinhaço

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Authors: Revista Espinhaço

Ficha Catalográfica

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Authors: Gisela Zapata, Douglas Sathler

A Revista Espinhaço apresenta uma entrevista exclusiva com a presidenta do Colegio de México, Silvia Elena Giorguli Saucedo. A entrevista foi realizada em janeiro de 2017, e conduzida por Gisela Zapata (Cedeplar-UFMG) e Douglas Sathler (UFVJM) nas dependências do Colegio de México, na Cidade do México. Silvia Elena Giorguli Saucedo fala sobre os desafios à frente da presidência do Colegio de México, do financiamento à ciência no México e do tema migrações, tanto no contexto México-Estados Unidos quanto no contexto Latino Americano.

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Authors: Oladipo Isaac Olaposi, Akinruli Ifedayo, Joshua Adebayo Yusuf

Water resources will be more affected as the effects of climate change continues to manifest in the environment. Since agriculture in the poor countries of the world still remain largely rainfed, the effect of climate change will leave greater impact on agriculture in those countries. Any effort made to improve water use efficiency in agriculture is worthwhile. This paper presents a report of the development of nano-irrigation system using molded clay for emitter diaphragm. The clay material was sourced locally from the deposit around the pottery community in Isan-Ekiti, Nigeria. Varying quantities of sawdust was mixed with clay before molding. As a result, seven different treatments of clay: sawdust ratios were made viz; 100:0, 90:10, 80:20, 70:30, 60:40, 50:50 and 40:60. The mold samples were sundried and later fired in the kiln at 700 o C. This process helped to strengthen the molds and eliminate the sawdust burnouts. From the water discharge test conducted by connecting the emitter to the discharge end of a water-hose the 80:20 treatment showed a discharge of 8.6 x 10-6 l/s (approximately 1 liter/day). The corresponding discharges from 70:30, 60:40, 50:50 and 40:60 were 4.3 x 10-5 l/s (2 liter/day), 1.6 x 10-5 l/s (approximately 4 liter/day), 1.4 x 10-5 l/s (approximately 5 liter/day) and 1.2 x10-5 l/s (approximately 7 liter/day). Compared to the commercial drippers manufacture by Netafim Ltd the discharge was far more efficient in curtailing irrigation water loss. The 70:30 sample was found more suitable for meeting the discharge of water quantity equivalent of the water requirement of pumpkin and okra vegetables. This was confirmed in the field experiment conducted with the crop in question. On the material utilization platform, the developed emitter is 100 times cost effective when compared to cooking pot and the economic return to the rural women far outweighs that of other pottery wares.

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Authors: Michael J. Passow

Geographic Education in the United States generally receives less attention than many other subjects, and surveys have found that most students lack proficiency. The resulting level of geographic literacy in the general population carries significant implications for national and international competitiveness and decision-making. This paper reviews factors leading to deficiencies in US Geography Education, including lack of emphasis compared with subjects more prominently tested, teacher preparation and in-service training, curricula design, and high student mobility rates. We also review positive trends, including developing more rigorous sets of learning standards and geographic skills, and support from interested organizations and State educational agencies for encouraging student interest and participation in assessments and contests. We examine selective resources for teaching and learning geographic concepts and skills, many available online from federal and nongovernmental agencies. Finally, we consider the potential for learning geography through such informal science education venues as museums and mass media.

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Authors: Solano de Souza Braga, Bernardo Machado Gontijo, Úrsula Ruchkys de Azevedo, Guilherme Augusto Pereira Malta, Marina Furtado Gonçalves

Este artigo é resultado de uma reflexão sobre as possíveis formas de relacionar a gestão territorial em três dos municípios mineiros que receberam a chancela de Patrimônio Cultural da Humanidade pela United Nations Educational, Scientific and Cultural Organization (UNESCO): Ouro Preto (título concedido em 1980), Congonhas, (título concedido em 1985) e Diamantina (título concedido em 1999). No contexto espacial da Reserva da Biosfera da Serra do Espinhaço (RBSE), Ouro Preto e Congonhas estão também incluídos na proposta de criação do Geopark Quadrilátero Ferrífero, chancela concedida pelo mesmo organismo internacional. A partir do levantamento acerca dos mecanismos gestores da região da RBSE, propõe-se um sistema colaborativo entre os sítios culturais e naturais, no intuito de que esta gestão possa ser realizada de maneira mais integrada e eficiente, com o objetivo de dar mais visibilidade ao patrimônio histórico-cultural visando à conservação e o desenvolvimento da região.