Results 21 to 30 of about 69,372 (225)

A high-altitude peatland record of environmental changes in the NW Argentine Andes (24 ° S) over the last 2100 years [PDF]

open access: yes, 2016
High-altitude cushion peatlands are versatile archives for high-resolution palaeoenvironmental studies, due to their high accumulation rates, range of proxies, and sensitivity to climatic and/or human-induced changes. Especially within the Central Andes,
Hense, Jonathan   +7 more
core   +3 more sources

Vog: Using Volcanic Eruptions to Estimate the Health Costs of Particulates

open access: yesThe Economic Journal, EarlyView., 2018
The negative consequences of long‐term exposure to particulate pollution are well established but a number of studies find no effect of short‐term exposure on health outcomes. The high correlation of industrial pollutants complicates the estimation of the impact of individual pollutants on health.
Timothy J. Halliday   +2 more
wiley   +1 more source

Modelling GNSS-observed seasonal velocity changes of the Ross Ice Shelf, Antarctica, using the Ice-sheet and Sea-level System Model (ISSM) [PDF]

open access: yesThe Cryosphere
The flow speeds of floating ice shelves around the Antarctic Ice Sheet exhibit clear intra-annual variability. However, the drivers of this variability remain poorly understood.
F. Baldacchino   +12 more
doaj   +1 more source

Agrostis meyenii Trin. (Poaceae, Agrostidinae): first records from Peru, including taxonomic notes and an identification key [PDF]

open access: yesCheck List, 2020
The grass Agrostis meyenii Trin. (Poaceae, Agrostidinae) is newly recorded from Peru and is found in high-Andean puna grasslands of the departments of Ancash, Ayacucho, and Huánuco, marking the northernmost known limit of this species.
Steven P. Sylvester   +1 more
doaj   +3 more sources

The Egg Yolk Content in ω-3 and Conjugated Fatty Acids Can Be Sustainably Increased upon Long-Term Feeding of Laying Hens with a Diet Containing Flaxseeds and Pomegranate Seed Oil

open access: yesFoods, 2021
Long-term feeding trials examining the incorporation of conjugated linolenic acids (CLnA) into the diet of laying hens are lacking. In the present study, we compared two diets in sixty-six red Sex-Link hens (33 hens/treatment), fed for 26 weeks.
Monique T. Ngo Njembe   +9 more
doaj   +1 more source

Special Issue “Writing Genealogy: Auto/Biographical Research, Autoethnography and Narrative Inquiry”: An Introduction

open access: yesGenealogy, 2022
Writing about genealogy within the ‘academy’ has been hindered by the perception that researching family history and genealogy belongs in the realm of hobbyists as something you might peruse in retirement [...]
Helene Connor
doaj   +1 more source

Towards a revision of the South American genus Praocis Eschscholtz (Coleoptera, Tenebrionidae), with estimation of the diversity of each subgenus [PDF]

open access: yes, 2014
A review of the subgenera of the South American genus Praocis Eschscholtz (Pimeliinae: Praociini) is presented. Praocis comprises 77 species and 8 subspecies arranged in nine subgenera distributed in arid lands from Central Peru and Bolivia to the ...
Flores, Gustavo Ernesto   +1 more
core   +4 more sources

Negotiating Discourses: A Pākehā Teacher Educator’s Exploration of Bicultural Teaching Practice

open access: yesNew Zealand Journal of Teachers' Work, 2014
Bicultural teaching practice in Aotearoa New Zealand is based on commitment to partnerships reflecting Te Tiriti o Waitangi/ The Treaty of Waitangi between Māori and non-Māori cultures, and is governed by professional standards and documents.
Alison Warren
doaj   +1 more source

High-Up: A Remote Reservoir of Microbial Extremophiles in Central Andean Wetlands [PDF]

open access: yes, 2015
The Central Andes region displays unexplored ecosystems of shallow lakes and salt flats at mean altitudes of 3700 m. Being isolated and hostile, these so-called “High-Altitude Andean Lakes” (HAAL) are pristine and have been exposed to little human ...
Albarracín, Virginia Helena   +7 more
core   +3 more sources

Geología y Metalogenia de la Puna

open access: yesEstudios Geologicos, 1987
En este trabajo se puntualizan una serie de conceptos sobre las relaciones existentes entre evolución geológica y metalogénesis de la Puna. El análisis de la sedimentación, magmatismo y metamorfismo de la provincia geológica Puna, permite diferenciarla ...
R. N. Alonso, J. G. Viramonte
doaj   +1 more source

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