Skarn, Porphyry, Vein, and Replacement Mineralization in the Toqui District, Southern Chile

2010 ◽  
Author(s):  
Steven D. Bussey ◽  
Alejandro Kakarieka ◽  
Lawrence D. Meinert
Keyword(s):  
Southern Chile

Copepod community response to variable upwelling conditions off central-southern Chile during 2002-2004 and 2010-2012

2014 ◽  
Vol 515 ◽  
pp. 83-95 ◽  
Author(s):  
P Pino-Pinuer ◽  
R Escribano ◽  
P Hidalgo ◽  
R Riquelme-Bugueño ◽  
W Schneider
Keyword(s):  
Community Response ◽  
Southern Chile ◽  
Copepod Community

Late Paleozoic foraminifera from southern Chile

10.3133/pp858 ◽  
1976 ◽  
Author(s):  
Raymond Charles Douglass ◽  
Merlynd Keith Nestell
Keyword(s):  
Late Paleozoic ◽  
Southern Chile

On a new Temnocephala (Platyhelminthes) from Southern Patagonia (Chile, Argentina), with a redescription of T. chilensis and some systematic and biogeographical insights

Zootaxa ◽  
2020 ◽  
Vol 4852 (3) ◽  
pp. 383-395
Author(s):  
RODRIGO PONCE DE LEÓN ◽  
ERICH H. RUDOLPH ◽  
ODILE VOLONTERIO
Keyword(s):  
New Species ◽  
Geographic Distribution ◽  
Southern Chile ◽  
Host Preferences ◽  
Southern Patagonia ◽  
Diagnostic Key ◽  
A New Species

To date, only one species of Temnocephala is known from Chile, Temnocephala chilensis, and three from southern Argentina (Patagonia), namely T. chilensis, Temnocephala dionii, and Temnocephala mexicana. Here we describe a new species of Temnocephala and provide an updated description of T. chilensis based on material found on an anomuran crab (Aeglidae) from southern Chile. Additional hosts and localities are reported for both species in southern Argentina and Chile, and a diagnostic key for all species of Temnocephala hosted on Aegla and Parastacidae is included as well. In southern Chile, both T. chilensis and the new species were found on the crayfish Samastacus spinifrons and on the anomuran crabs Aegla abtao and Aegla alacalufi; in addition, the new species was found on Aegla manni, and T. chilensis on Aegla rostrata. In southern Argentina, T. chilensis and the new species were found on Aegla riolimayana and S. spinifrons. Based on their shared traits (morphology of the penial stylet, host preferences and geographic distribution), the temnocephalans hosted in Aegla are tentatively gathered into two clusters, the Chilensis and Axenos groups. 

scholarly journals A large calving event of Ventisquero San Rafael, southern Chile

1992 ◽  
Vol 38 (128) ◽  
pp. 208-209 ◽  
Author(s):  
Stephan Harrison
Keyword(s):  
Southern Chile ◽  
San Rafael

Water governance in rural communities of Chiloé Island, southern Chile: A multi-level analysis

2020 ◽  
Author(s):  
L.E. Delgado ◽  
R. De Ríos ◽  
M. Perevochtchikova ◽  
I.A. Marín ◽  
R. Fuster ◽  
...  
Keyword(s):  
Rural Communities ◽  
Water Governance ◽  
Southern Chile ◽  
Multi Level ◽  
Level Analysis

scholarly journals Pressurized Hot Liquid Extraction with 15% v/v Glycerol-Water as an Effective Environment-Friendly Process to Obtain Durvillaea Incurvata and Lessonia Spicata Phlorotannin Extracts with Antioxidant and Antihyperglycemic Potential

Antioxidants ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 1105
Author(s):  
Fernanda Erpel ◽  
María Salomé Mariotti-Celis ◽  
Javier Parada ◽  
Franco Pedreschi ◽  
José Ricardo Pérez-Correa
Keyword(s):  
Brown Seaweed ◽  
Dry Weight ◽  
Liquid Extraction ◽  
Southern Chile ◽  
Polyphenol Content ◽  
Glycerol Water ◽  
Environment Friendly ◽  
Dry Extract ◽  
First Time ◽  
Anatomical Part

Brown seaweed phlorotannins have shown the potential to promote several health benefits. Durvillaea incurvata and Lessonia spicata—species that are widely distributed in central and southern Chile—were investigated to obtain phlorotannin extracts with antioxidant and antihyperglycemic potential. The use of an environmentally friendly and food-grade glycerol-based pressurized hot liquid extraction (PHLE) process (15% v/v glycerol water) was assessed for the first time to obtain phlorotannins. Multiple effects were analyzed, including the effect of the species, harvesting area (Las Cruces and Niebla), and anatomical part (holdfast, stipe, and frond) on the extracts’ polyphenol content (TPC), antioxidant capacity (AC), and carbohydrate-hydrolyzing enzyme—α-glucosidase and α-amylase—inhibitory activity. Contaminants, such as mannitol, heavy metals (As, Cd, Pb, Hg, and Sn), and 5-hydroxymethylfurfural (HMF), were also determined. The anatomical part used demonstrated a significant impact on the extracts’ TPC and AC, with holdfasts showing the highest values (TPC: 95 ± 24 mg phloroglucinol equivalents/g dry extract; DPPH: 400 ± 140 μmol Trolox equivalents/g dry extract; ORAC: 560 ± 130 μmol TE/g dry extract). Accordingly, holdfast extracts presented the most potent α-glucosidase inhibition, with D. incurvata from Niebla showing an activity equivalent to fifteen times that of acarbose. Only one frond and stipe extract showed significant α-glucosidase inhibitory capacity. No α-amylase inhibition was found in any extract. Although no HMF was detected, potentially hazardous cadmium levels (over the French limit) and substantial mannitol concentrations—reaching up to 50% of the extract dry weight—were found in most seaweed samples and extracts. Therefore, further purification steps are suggested if food or pharmaceutical applications are intended for the seaweed PHLE extracts obtained in this study.

scholarly journals Place-Based STEM Education for Sustainability: A Path towards Socioecological Resilience

2021 ◽  
Vol 13 (15) ◽  
pp. 8414
Author(s):  
Martín Bascopé ◽  
Kristina Reiss
Keyword(s):  
Stem Education ◽  
Educational Experiences ◽  
Learning Experiences ◽  
Education For Sustainability ◽  
Southern Chile ◽  
Teachers And Students ◽  
Local Actors ◽  
One Year ◽  
Sustainability Challenges ◽  
Attitudinal Changes

This article analyzes STEM projects conducted in eight schools with children from 4 to 10 years old in southern Chile. The main purpose of the study was to describe and analyze how these projects can affect students’ and educators’ attitudes and create community capacities to tackle local socioecological challenges. We used an ethnographic design with an intentioned coding process of interviews and participant observations to summarize one year of collaborative and transdisciplinary project building. The results describe the main attitudinal changes of teachers and students and give evidence on how these projects create new links and foster collaborations with local actors and organizations that are usually sidelined from educational experiences. Examples of meaningful learning experiences to tackle sustainability challenges were systematized and shared, to inspire new initiatives, raise new voices, and promote active participation of the new generations to foster socioecological resilience.

scholarly journals High prevalence of CTX-M-1 group in ESBL-producing enterobacteriaceae infection in intensive care units in southern Chile

2019 ◽  
Vol 23 (2) ◽  
pp. 102-110 ◽  
Author(s):  
Mónica Pavez ◽  
Claudia Troncoso ◽  
Irma Osses ◽  
Rodrigo Salazar ◽  
Vijna Illesca ◽  
...  
Keyword(s):  
Intensive Care ◽  
Intensive Care Units ◽  
Southern Chile ◽  
High Prevalence

scholarly journals Influence of Patient Age on Streptococcus pneumoniae Serotypes Causing Invasive Disease

2001 ◽  
Vol 8 (3) ◽  
pp. 556-559 ◽  
Author(s):  
Jaime Inostroza ◽  
Ana Maria Vinet ◽  
Gloria Retamal ◽  
Pedro Lorca ◽  
Gonzalo Ossa ◽  
...  
Keyword(s):  
Age Groups ◽  
Invasive Disease ◽  
Bacterial Virulence ◽  
Host Factors ◽  
Invasive Infection ◽  
Age Group ◽  
Southern Chile ◽  
Age Related ◽  
Sterile Site ◽  
Selection Of

ABSTRACT All clinical S. pneumoniae specimens isolated from patients with invasive or sterile-site infections admitted to one regional general hospital in southern Chile were collected during a 5-year period (February 1994 to September 1999). A total of 247 strains belonging to 50 serotypes were isolated in this survey: 69 in patients under 5 years of age, 129 in patients 5 to 64 years old, and 49 from patients 65 years and older. Eight serotypes were identified in all age groups, while all other serotypes were found exclusively in one age group or in patients over 4 years of age. Serotype 3 was never found in patients under 5 years old, and serotype 14 was not found in patients >64 years of age. There was no difference in the serotypes causing infection in each one of the 5 years of the survey. Our results suggest that both bacterial virulence factors and host factors play an important role in the selection of S. pneumoniae serotypes causing invasive infection. Possible host factors include age-related differences in the immune response. Comparative studies with other areas of the world may help to further understanding of our observations in southern Chile.

Sign in / Sign up

Export Citation Format

Share Document