منابع مشابه
Manganese minerals in geodes from Chihuahua, Mexico
Seven manganese minerals have been observed in geodes from Chihuahua, Mexico. Ramsdellite occurs in a number of different habits, but the morphology and precession X-ray patterns suggest that it is pseudomorphous after groutite. Pyrolusite is found only in association with ramsdellite and is believed to be an alteration product of that mineral. Todorokite generally occurs as a late-stage fibrou...
متن کاملVariation in the Distribution of Four Cacti Species Due to Climate Change in Chihuahua, Mexico
This study is about four cacti species in the state of Chihuahua, (Coryphantha macromeris, Mammillaria lasiacantha, Echinocereus dasyacanthus and Ferocactus wislizenii). Geographic distribution was inferred with MaxEnt. Projection was estimated under three scenarios simulated from IPCC (A2, B1 and A1B) and four periods (2000, 2020, 2050 and 2080) with 19 climatic variables. MaxEnt projects a sp...
متن کاملSeasonal characterization of municipal solid waste (MSW) in the city of Chihuahua, Mexico.
Management of municipal solid waste (MSW) has become a significant environmental problem, especially in fast-growing cities. The amount of waste generated increases each year and this makes it difficult to create solutions which due to the increase in waste generation year after year and having to identify a solution that will have minimum impact on the environment. To determine the most sustai...
متن کاملDetached from Their Homeland: The Latter-day Saints of Chihuahua, Mexico
Over the past few decades, the homeland concept has received an ever-increasing amount of attention by cultural geographers. While the debate surrounding the necessity and applicability of the concept continues, it is more than apparent that no other geographic term (including culture areas or culture regions) captures the essence of peoples’ attachment to place better than homeland. The litera...
متن کاملUranium in the Surrounding of San Marcos-Sacramento River Environment (Chihuahua, Mexico)
The main interest of this study is to assess whether uranium deposits located in the San Marcos outcrops (NW of Chihuahua City, Mexico) could be considered as a source of U-isotopes in its surrounding environment. Uranium activity concentrations were determined in biota, ground, and surface water by either alpha or liquid scintillation spectrometries. Major ions were analyzed by ICP-OES in surf...
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ژورنال
عنوان ژورنال: Smithsonian Contributions to Botany
سال: 2018
ISSN: 1938-2812
DOI: 10.5479/si.1938-2812.107