Results 201 to 210 of about 172,486 (346)

Caracterização molecular de cianobactérias de sistemas aquáticos portugueses

open access: yes, 2010
Doutoramento em BiologiaAs alterações climáticas favorecem a ocorrência global de episódios de precipitação e seca extremas, colocando em risco a qualidade da água em sistemas aquáticos usados consumo humano ou recreação.
Figueiredo, Daniela Rebelo de
core  

Endothelium‐ and epithelium‐derived novel endogenous catecholamines as modulators of the autonomic nervous system

open access: yesBritish Journal of Pharmacology, EarlyView.
Abstract Catecholamines are classically viewed as neuronal transmitters and adrenal hormones; however, accumulating evidence demonstrates that sources other than nerve fibres and adrenal medulla play a fundamental role in local organ regulation. Physiological paradoxes, such as preserved organ function after denervation or transplantation, challenge a ...
Mariana G. de Oliveira   +3 more
wiley   +1 more source

Scientists’ warning on the global destruction of rock outcrop ecosystems

open access: yesConservation Biology, EarlyView.
Abstract Rock outcrops are geological formations that harbor a highly specialized biota adapted to harsh environmental conditions that differ from their surrounding landscapes. They are globally distributed, especially in old, highly weathered landscapes, and can function as habitat islands containing high levels of endemism and distinct evolutionary ...
Luiza F. A. de Paula   +19 more
wiley   +1 more source

Isolation, cultivation, and molecular characterization of cyanobacteria isolated from desert soils

open access: yes
reservedLa superficie terrestre è occupata per oltre il 40% da terre aride, aree con un indice di aridità inferiore a 0,65. Nonostante siano considerate ambienti estremi, le terre aride ospitano il 28% delle specie in pericolo di estinzione e una ricca
BERTACCO, GIULIA
core  

Co‐Culture of Mammalian Cells and Photosynthetic Microorganisms for Oxygen Supply in Engineered Tissues

open access: yesCell Proliferation, EarlyView.
Continuous 28‐day light exposure alters behaviours of articular cartilage progenitor cells (ACPCs) and mesenchymal stromal cells (MSCs). Co‐culture with Leptolyngbya and Synechococcus does not adversely affect the chondrogenic capacity of ACPCs over a 28‐day period, in contrast to co‐culture with Chlorella.
Meng Wang   +10 more
wiley   +1 more source

Correlations Between a Cyanobacteria Bloom's Decline and Environmental Dynamics.

open access: yes, 2009
Lake Kainui is an ombrogenous peat lake that is eutrophic and has frequent cyanobacterial blooms. This research aimed to elucidate the factors that correlated with cyanobacterial bloom decline in Lake Kainui. Abiotic and biotic variables in Lake Kainui
O'Rorke, Richard
core  

The tryptophan prenyltransferase ComQ from Bacillus subtilis 168 can prenylate daptomycin at Trp1

open access: yesThe FEBS Journal, EarlyView.
ComQ168 from Bacillus subtilis 168 catalyzes C‐terminal tryptophan farnesylation of ComX to generate a competence‐inducing pheromone. Recombinant ComQ168 also modifies cyclic peptides, including Daptomycin, likely at the N‐terminal tryptophan. Structural modeling highlights a C‐terminal binding region, supporting substrate promiscuity and establishing ...
Yanli Xu   +2 more
wiley   +1 more source

Phanerozoic Large Igneous Province, Petroleum System, and Source Rock Links

open access: yesGeophysical Monograph Series, Page 191-228., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Steven C. Bergman   +2 more
wiley  

+1 more source

The Effects of Nutrient Additions on Kokanee in Dworshak Reservoir, Idaho

open access: yesFisheries Management and Ecology, EarlyView.
ABSTRACT We investigated the effects of whole reservoir nitrogen (N) addition on kokanee growth in Dworshak Reservoir, Idaho. We hypothesized that N addition would improve the growth of kokanee (Oncorhynchus nerka) at a given level of abundance by increasing the availability of Daphnia, an important food source.
Sean M. Wilson   +5 more
wiley   +1 more source

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