Results 111 to 120 of about 494,179 (298)

Food Security Versus Environmental Health: The Nitrogen Dilemma

open access: yesJournal of Plant Nutrition and Soil Science, EarlyView.
ABSTRACT Nitrogen is an essential element for plant growth and, consequently, crop production. However, the cycling of nitrogen in the environment can have negative effects. Here, we review the historical development of scientific and public awareness of these effects and the influence this has had on political action to control them.
Henrike Mielenz   +8 more
wiley   +1 more source

Hulda Crooks Mountain Climbing

open access: yes, 2008
Hulda Crooks was affectionately called "Grandma Whitney" after her mountain climbing accomplishments. Crooks was a Seventh-day Adventist from the age of 18. She was one of 18 children of a farming couple.
Unknown
core   +1 more source

Unidentified man climbing [2]

open access: yes
Photo showing an Alpine Mountain Club member climbing, probably at Petes Rock on the east side of the Salt Lake Valley, Holladay ...

core  

‘The most advanced outpost of cultivation’: palynological evidence for cereal agriculture and population resilience in a marginal upland environment

open access: yesJournal of Quaternary Science, EarlyView.
ABSTRACT Upland farming in Europe is frequently assumed to have been limited and precarious, despite relict spade‐dug ridges providing firm evidence of past crop growing. Direct evidence for crop types in post‑Medieval to Modern (~since 1500 CE) uplands is rare; yet, in Ireland, relict spade‐dug ridges that date to this period are commonly interpreted ...
Helen Essell, Gill Plunkett
wiley   +1 more source

Motivation to Mountain Climbing and Mountaineering [PDF]

open access: yes, 2010
The Motivation to Mountain Climbing and Mountaineering The aim of the thesis was to investigate motivational aspects of mountaineering the most successful Czech mountainners today, and compare these results with international research, undertaken in the ...
Gável, Luboš
core   +1 more source

Inhibit the calpain to climb the mountain

open access: yesBlood, 2014
Who does not know about the increased risk of developing deep vein thrombosis during long air travels? Or heard about pulmonary or cerebral thrombosis causing death of people trekking Himalaya? Have you ever thought that calpains may have something to do with that?
openaire   +3 more sources

Unidentified people climbing

open access: yes
Photo showing some Alpine Mountain Club members climbing on Petes Rock near Mount Olympus trailhead in Holladay, Utah; view south toward Lone ...

core  

A mountain climbing group, ca.1930

open access: yes, 2005
Photograph of a mountain climbing group, ca.1930. A group of men and women in rugged clothes are posing while either standing or sitting down on large rectangular rocks. A man can be seen sitting on an elevated pile of rocks.

core  

First finding of Icelandic tephra in Czechia: Vedde Ash identified in palaeolake sediments of Stará Jímka

open access: yesJournal of Quaternary Science, EarlyView.
ABSTRACT In this study, we report the first documented occurrence of the Icelandic Vedde Ash (VA) in the Bohemian Forest, identified within palaeolake sediments from Stará Jímka, Czechia, representing the first Icelandic tephra layer identified in Czechia.
Verena Meier   +3 more
wiley   +1 more source

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