Results 21 to 30 of about 35,976 (302)

Closed ecological life support systems [PDF]

open access: yes, 2020
Materially closed life support systems containing biological components that provide atmosphere, food and water for a human crew has been investigated for use in space travel since the 1960s.
Persson, Hugo
core  

Stochasticity causes high β-diversity and functional divergence of bacterial assemblages in closed systems [PDF]

open access: yes, 2023
Stochasticity is a major cause of compositional β-diversity in communities that develop under similar environmental conditions. Such communities may exhibit functional similarity due to sympatric taxa with equivalent metabolic capacities in the source ...
Pernthaler, Jakob; https://orcid.org/   +4 more
core   +1 more source

Metafizyka w ekologii? Ekosystem jako Złożony System Adaptacyjny

open access: yesScientia et Fides, 2013
Metaphysics in ecology? Ecosystem as a Complex Adaptive SystemThe metaphysical exploration regarding the origin and evolution of life is also present in ecology, however, does not refer to individual organisms, but entire ecological systems, such as ...
Magdalena Czarnecka
doaj   +1 more source

On the Way to Mars—Flagellated Algae in Bioregenerative Life Support Systems Under Microgravity Conditions

open access: yesFrontiers in Plant Science, 2020
For long-term manned interplanetary missions it is not feasible to carry the necessary oxygen, food, and water to sustain the astronauts. In addition, the CO2 exhaled by the astronauts has to be removed from the cabin air.
Donat‑P. Häder
doaj   +1 more source

Moray eels are more common on coral reefs subject to higher human pressure in the greater Caribbean

open access: yesiScience, 2021
Summary: Proximity and size of the nearest market (‘market gravity’) have been shown to have strong negative effects on coral reef fish communities that can be mitigated by the establishment of closed areas.
Gina M. Clementi   +20 more
doaj   +1 more source

Ecological engineering for controlling water pollution in Latin America [PDF]

open access: yes, 2013
Ecological engineering is a discipline that combines ecology and engineering to design, construct, restore and manage ecosystems. The design of constructed wetlands (CWs) and anaerobic digesters (ADs) are two applications of ecological engineering to ...
Maria Elizabeth Hernandez
core  

From mice to humans—divergent strategies for intestinal homeostasis and regeneration

open access: yesFEBS Letters, EarlyView.
Recent advances such as organoid genome editing, xenotransplantation, imaging, and whole‐genome sequencing have enabled direct studies of human intestinal stem cells (ISCs). These studies reveal species‐specific features, including slower ISC proliferation, distinct injury responses, slower somatic mutation accumulation in humans, and an inverse ...
Keiko Ishikawa   +2 more
wiley   +1 more source

Application of ecological criteria in selecting marine reserves and developing reserve networks [PDF]

open access: yes, 1997
Marine reserves are being established worldwide in response to a growing recognition of the conservation crisis that is building in the oceans. However, designation of reserves has been largely opportunistic, or protective measures have been implemented (
Bouwman, A.F.   +264 more
core   +1 more source

Design and analysis strategies for robust microbiome ageing research

open access: yesFEBS Letters, EarlyView.
The gut microbiome changes with age and associates with age‐related morbidity and mortality, establishing it as a potential biomarker and intervention target for ageing. Realising this potential requires methodological rigour, yet distinguishing biological signals from methodological artefacts remains challenging across cohorts. This review provides an
Mark Olenik   +5 more
wiley   +1 more source

Evolutionarily divergent DUF4465 domains have a common vitamin B12‐binding function

open access: yesFEBS Open Bio, EarlyView.
We show that DUF4465 family proteins, widespread across bacteria from gut microbiomes, hydrothermal vents, and soil, share a common vitamin B12‐binding function. These augmented β‐jellyroll proteins bind vitamin B12 via extended loops. Our findings establish sequence‐diverse DUF4465 proteins as a widespread class of B12‐binding proteins, highlighting ...
Charlea Clarke   +4 more
wiley   +1 more source

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