Results 91 to 100 of about 7,672 (207)

Ecosystem Size Mediates the Effects of Resource Flows on Species Diversity and Ecosystem Function at Different Scales

open access: yesEcology and Evolution, Volume 14, Issue 12, December 2024.
Ecosystem size and resource flows are key factors driving biodiversity and ecosystem function. However, the question of whether and how these drivers interact has been largely overlooked. Here, we show how ecosystem size asymmetry affects biodiversity and function of two‐patch meta‐ecosystems connected through flows of nonliving resources using a ...
Emanuele Giacomuzzo   +3 more
wiley   +1 more source

Synergistic Interactions within a Multispecies Biofilm Enhance Individual Species Protection against Grazing by a Pelagic Protozoan

open access: yesFrontiers in Microbiology, 2018
Biofilm formation has been shown to confer protection against grazing, but little information is available on the effect of grazing on biofilm formation and protection in multispecies consortia.
Prem K. Raghupathi   +6 more
doaj   +1 more source

The rotating spectrometer: New biotechnology for cell separations [PDF]

open access: yes
An instrument for biochemical studies, called the rotating spectrometer, separates previously inseparable cell cultures. The rotating spectrometer is intended for use in pharmacological studies which require fractional splitting of heterogeneous cell ...
Matsos, Helen C., Noever, David A.
core   +1 more source

Effect of SXWS/WSXWS peptides on chemotaxis and adhesion of the macrophage-like cell line J774 [PDF]

open access: yes, 2015
WSXWS motif is a conserved amino acid sequence that is present in type I cytokine receptors. This motif that can be found both in the ligand binding chains and signal transducer molecule of the receptors with different amino acids at the position “X ...
Bazan   +22 more
core   +1 more source

DNA polymerase activity from Tetrahymena pyriformis

open access: yesFEBS Letters, 1971
The DNA polymerase of Z’etrahymena pyrifomis was first isolated from crude extracts of the cells by Pearlman and Westergaard [ 1,2] . The specific activity of this polymerase was increased if, prior to extraction, the cells were treated with either ultraviolet irradiation, electron irradiation, methotrexate plus uridine or ethidium bromide [2&4]. Using
Crerar, Michael, Pearlman, Ronald E.
openaire   +2 more sources

Complex assessment of the soil of rice fields in Vietnam

open access: yesRUDN Journal of Ecology and Life Safety, 2013
The results of biological testing of soil samples, and Vietnamese rice infusoria Tetrahymena pyriformis using an automated device BioLaT and compare the results with the results of bioassay on daphnia and fitotesta, as well as the results of analyzes.
- Mai Thu Lan
doaj  

DETERMINATION OF PHYSICOCHEMICAL, IMMUNOCHEMICAL AND ANTIOXIDANT PROPERTIES, TOXICOLOGICAL AND HYGIENIC ASSESSMENT OF WHEY PROTEIN COMCENTRATE AND ITS HYDROLYSATE

open access: yesFoods and Raw Materials, 2015
Enzymatic hydrolysis of whey proteins is aimed to obtain products with low allergenic potential and high nutritional value. Whey peptides are protein fraction that possesses a variety of physicochemical, immunochemical and bioactive properties ...
Halavach T.M.   +3 more
doaj   +1 more source

Miniaturization and application of the MTT assay to evaluate metabolic activity of protozoa in the presence of toxicants [PDF]

open access: yes, 1999
This paper describes a critical evaluation of a miniaturised colorimetric assay, using MTT (3-[4,5- dimethyl-thiazol-2-yl]-2,5-diphenyl-tetrazolium bromide) reduction, applied to protozoan viability testing. The toxic substances used were copper, zinc,
Carvalho, Graça Simões de   +4 more
core   +1 more source

A Coralline Algal-Associated Bacterium, Pseudoalteromonas Strain J010, Yields Five New Korormicins and a Bromopyrrole

open access: yesMarine Drugs, 2014
The ethanol extract of Pseudoalteromonas strain J010, isolated from the surface of the crustose coralline alga Neogoniolithon fosliei, yielded thirteen natural products.
Jan Tebben   +4 more
doaj   +1 more source

Physiological responses of the ciliated protozoa tetrahymena pyriformis to toxic compounds [PDF]

open access: yes, 1998
PRAXIS ...
Carvalho, Graça Simões de   +4 more
core  

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