esteban molina cell andean mining
2021-5-20 · Key message Integrating genomics technologies and breeding methods to tweak core parameters of the breeder''s equation could accelerate delivery of climate-resilient and nutrient rich crops for future food security. Abstract Accelerating genetic gain in crop improvement programs with respect to climate resilience and nutrition traits, and the realization of the improved gain in farmers ...
Open-pit mining results in profound modifications at different environmental scales that may persist for very long time periods, or even indefinitely. ... Esteban Chirino. ... Tropical Andean ...
A multi-cell cellular automata model of traffic flow with emergency vehicles: effect of a corridor of life 12:00 Zixian Tang, Qiang Wang, Wenhao Li, Huaifeng Bao, Wen Wang and Feng Liu
The cell phone market in La Paz, Bolivia: reciprocity and capitalism. María Luisa López Guerrero: 24 Anthropology of work: theoretical-ethnographic challenges: 161: Trabajadores de la línea 60 de colectivos metropolitanos de Buenos Aires: procesos de organización y respuesta: Irina Stojanoff: 24 Anthropology of work: theoretical ...
2019-4-30 · More of the social world lives within electronic text than ever before, from collective activity on the web, social media, and instant messaging to online transactions, government intelligence, and digitized libraries. This supply of text has elicited demand for natural language processing and machine learning tools to filter, search, and translate text into valuable data. We survey some of ...
2015-5-1 · Artisanal miners excavate for one week and according to the type and amount of ore mined, they decide for one of the 4 options to extract gold: 1) rent "chanchas", 2) rent "quimbaletes" 3) sell to local cyanidation plants or 4) sell the ore to a processing company that takes the ore to other regions outside Piura () the two first options the whole ore is amalgamated which is the ...
2021-5-1 · The extraction of brine containing water by lithium mining configures an extractivist territoriality that overlooks other local territorialities, knowledge, and Andean cosmovisions of nature. For the area''s indigenous communities, the Salar is a natural hydric entity …
2019-6-20 · Arsenic (As) is a toxic metalloid common in coal mining soils. We evaluated a stratification treatment of 48 h of chilling imbibition (3 °C) versus control imbibition (25 °C) in seeds of the Andean tree Alnus acuminata (Kunth). Five concentrations of As: 0, 2.5, 5.0, 7.5, and 10 mg L−1 were tested in both groups of seeds to determine whether chilling imbibition affects the germination ...
Esteban Galeano Luz Maria Munoz Several Andean forests in the Guatape municipality and in the eastern Antioquia (Colombia) do not have studies related to population …
2021-8-30 · Conceptual confusion revolves around how to define, assess, and overcome land, ecosystem, and landscape degradation. Common elements link degradation and recovery processes, offering ways to advance local, regional, and global initiatives to reduce degradation and promote the recovery of ecosystems and landscapes in forest biomes. Biophysical attributes of degradation and …
Continental arc migration/expansion is recorded in Argentina in the Gondwanan magmatism south of 31 0 S (Kleiman and Japas, 2009), in the Oligocene magmatism in Puna (Coira et al., 1982; Mpodozis ...
Amazonian forests have lost ~12% of their original extent and are projected to lose another 9 to 28% by 2050 (1, 2).The consequences of ongoing forest loss in Amazonia (here all rainforests of the Amazon basin and Guiana Shield) are relatively well understood at the ecosystem level, where they include soil erosion (3, 4), diminished ecosystem services (5–8), altered climatic patterns (5, 7 ...
2021-11-10 · Understanding those processes in which snow dynamics has a significant influence requires long-term and high spatio-temporal resolution observations. While new optical space-borne sensors overcome many previous snow cover monitoring limitations, their short temporal length limits their application in climatological studies. This work describes and evaluates a probabilistic spatial …
2021-9-3 · One major health issue is the microbial and chemical contamination of natural freshwater, particularly in Latin American countries, such as Ecuador, where it is still lacking wastewater treatment ...
2021-11-1 · According to Hass et al., the Chilean copper mining electrical supply could become 100 % solar based by 2030. But also, according to Moreno-Leiva et al., copper mining needs a multi-vector system design to supply its energy (electricity, heat and fuels) and water demand, with an appropriate operational flexibility. Therefore, the current ...
Tremarctos ornatus (F.G. Cuvier, 1825) is a tremarctine bear commonly known as the Andean bear. It is a medium-sized bear with black to dark red-brown pelage with dense, long, coarse fur; creamy white marks occur on the chin, neck, and chest, and often white to creamy marks occur on the face, around the muzzle, and eyes.
moderate, and extreme halophiles are those that grow best in media containing 2 to. 5 %, 5 to 20 %, and 20 to 30 %, respectiv ely. Kushner ( 1968) then distinguished be-. tween obligate moderate ...
2021-6-1 · Artisanal Gold Mining transforms forest into novel wetlands in the Peruvian Amazon. • Abandoned AGM ponds contain high species richness of fish, invertebrate and plankton. • Their community structure is widely regulated by flood pulse activity and seasonality. • These remnant surface ponds are located in a hotspot at the Andean-Amazon rim
2021-1-7 · This article identifies homogeneous precipitation regions in Ecuador and their relationship to the El Niño-Southern Oscillation (ENSO), using monthly records from 215 rain stations for the 1968–2014 period. A k-means clustering analysis was used to divide the study area into k regions based on monthly and annual precipitation variables and geographic location (latitude, longitude, and ...
2018-12-3 · 1 Introduction. Located in the central Andes of northern Chile, the Salar de Atacama has a surface area of 3,000 km 2 (Lowenstein & Risacher, 2009) was formed in the early Late Cretaceous as a consequence of the inversion of the Mesozoic backarc and is located at an elevation of 2,300 m above sea level (Mpodozis et al., 2005).Aquatic habitats in the salar are highly saline, with brines ...
2019-11-8 · Chenopodium pallidicaule Aellen (also known as cañahua) is a species of the goosefoot family (Amaranthaceae) related to the increasingly popular seed crop, quinoa (C. quinoa Willd). Gade noted that cañahua is a partially domesticated crop that provides food security to many subsistence farmers across the Andean Altiplano—the high plateau situated at 3500–4200 m above sea level …
"In this vivid, engaging hybrid of travel and history, Kim MacQuarrie proves to be the ideal companion on a trip the length of South America—a land where past and present are inseparable." (Mark Adams, author of TURN RIGHT AT MACHU PICCHU: Rediscovering the Lost City One Step at a Time) "[MacQuarrie] writes smartly and engagingly and with a sense of populist enthusiasm about the ...
2020-7-5 · In recent algorithmic family simulates different biological processes observed in Nature in order to efficiently address complex optimization problems. In the last years the number of bio-inspired optimization approaches in literature has grown considerably, reaching unprecedented levels that dark the future prospects of this field of research. This paper addresses this problem by proposing ...
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2021-7-1 · Puya raimondii, the Queen of the Andes, is an endangered high Andean species in the Bromeliaceae family.Here, we report its first genome to promote its conservation and evolutionary study. Comparative genomics showed P. raimondii diverged from Ananas comosus about 14.8 million years ago, and the long terminal repeats were likely to contribute to the genus diversification in last 3.5 …
2021-11-5 · The Blue-throated Macaw (Ara glaucogularis) is a Critically Endangered species endemic to the Llanos de Moxos ecosystem of Beni, Bolivia. To aid conservation of the northwestern population that utilizes the Barba Azul Nature Reserve during the non-breeding season, we set out to learn the sites where these birds breed using satellite telemetry. We describe preliminary tests conducted on captive ...
Luis esteban Sarmiento. Corrado M Cilio. Organ-specific autoimmune diseases, such as type 1 diabetes, are believed to result from T-cell-mediated damage of the target tissue. The immune-mediated ...
2016-11-7 · Herein, periphyton is defined as a biofilm composed of algae, bacteria, fungi, microinvertebrates, and organic and inorganic detritus. All of it is held together by a mucopolysaccharide matrix (Lowe 1996).Periphyton is considered one of the main sources of food for aquatic organisms (invertebrates and fish) (Junk and Piedade 1997; Molina et al. 2010) as well as a major entry point of …
2015-5-1 · A new affordable column flotation designed for small-scale mining was developed with the Brazilian company DPSMS and installed in the project demonstration plant. Two larger column flotation cells were also installed in a commercial plant in Portovelo and became part of the training for artisanal miners from Peru and other Andean regions.