Results 21 to 30 of about 2,302,708 (308)

Impaired Postural Control Reduces Sit-to-Stand-to-Sit Performance in Individuals with Chronic Obstructive Pulmonary Disease [PDF]

open access: yes, 2014
Background: Functional activities, such as the sit-to-stand-to-sit (STSTS) task, are often impaired in individuals with chronic obstructive pulmonary disease (COPD).
Brumagne, S   +9 more
core   +3 more sources

Healthy aging—would cytotoxic T lymphocytes stand out?

open access: yesCell Death Discovery, 2023
Senescent cells (SnCs) accumulate in multiple tissue types with the process of individual aging, hindering tissue renewal and driving multiple aging-related disorders. Aside from senescence-associated secretory phenotype (SASP) neutralization and senolytics, there is an emerging senolysis strategy to eliminate SnCs by mobilizing the immunosurveillance ...
Tianyu Zhang, Jinjin Zhang, Shixuan Wang
openaire   +3 more sources

Clover Root Curculio Injury and Abundance in Minnesota Alfalfa of Different Stand Age [PDF]

open access: yes, 2017
Root injury and midsummer adult abundance of clover root curculio (CRC), Sitona hispidulus (Fabricius), was surveyed in 24 different aged southeastern Minnesota alfalfa fields. CRC presence was not detected in first year fields 2-3 months following stand
Cranshaw, Whitney S
core   +2 more sources

Estimating the Aboveground Biomass for Planted Forests Based on Stand Age and Environmental Variables

open access: yesRemote Sensing, 2019
Measuring forest aboveground biomass (AGB) at local to regional scales is critical to understanding their role in regional and global carbon cycles. The Three-North Shelterbelt Forest Program (TNSFP) is the largest ecological restoration project in the ...
Dailiang Peng   +12 more
doaj   +1 more source

An early Little Ice Age brackish water invasion along the south coast of the Caspian Sea (sediment of Langarud wetland) and its wider impacts on environment and people [PDF]

open access: yes, 2015
Caspian Sea level has undergone significant changes through time with major impacts not only on the surrounding coasts, but also offshore. This study reports a brackish water invasion on the southern coast of the Caspian Sea constructed from a multi ...
Aghanabati A   +19 more
core   +2 more sources

Impact of orography and stand canopy on stand volume in pure uneven-aged beech stands

open access: yesTopola, 2022
European beech is one of the most important and most common tree species in Europe, which have extremely wide amplitude in sense of horizontal and vertical distribution. In Serbia and Bosnia and Herzegovina European beech (Fagus sylvatica L.) represents one of the most important tree species from an economic and ecological point of view, because it's ...
Todor Đorem   +7 more
openaire   +1 more source

Alterations in Arbuscular Mycorrhizal Community Along a Chronosequence of Teak (Tectona grandis) Plantations in Tropical Forests of China

open access: yesFrontiers in Microbiology, 2021
Arbuscular mycorrhizal (AM) fungi play a crucial role in promoting plant growth, enhancing plant stress resistance, and sustaining a healthy ecosystem. However, little is known about the mycorrhizal status of teak plantations.
Zhi Yu   +7 more
doaj   +1 more source

Mullahingamise sesoonne dünaamika kuusikute aegreas / Seasonal dynamics of soil respiration in a chronosequence of the Norway spruce stands

open access: yesMetsanduslikud Uurimused, 2011
Soil respiration resulting from microbial and root respiration is a major component of the forest carbon cycle. The response of soil respiration to varying environmental factors (soil temperature and soil moisture) was studied in a Norway spruce ...
Kukumägi Mai, Uri Veiko, Kull Olevi
doaj   +1 more source

Attitudes to ageing and objectively-measured sedentary and walking behaviour in older people: the Lothian Birth Cohort 1936 [PDF]

open access: yes, 2018
Background:Prolonged sitting and low activity—both common in older people—are associated with increased mortality and poorer health. Whether having a more negative attitude to ageing is associated with higher levels of these behaviours is unclear ...
Chastin, Sebastian F.   +7 more
core   +4 more sources

Carbon cycling in mature and regrowth forests globally

open access: yesEnvironmental Research Letters, 2021
Forests are major components of the global carbon (C) cycle and thereby strongly influence atmospheric carbon dioxide (CO _2 ) and climate. However, efforts to incorporate forests into climate models and CO _2 accounting frameworks have been constrained ...
Kristina J Anderson-Teixeira   +7 more
doaj   +1 more source

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