Results 61 to 70 of about 2,703,176 (382)

Network topology drives population temporal variability in experimental habitat networks

open access: yesPopulation Ecology, EarlyView.
Habitat patches connected by dispersal pathways form habitat networks. We explored how network topology affects population outcomes in laboratory experiments using a model species (Daphnia carinata). Central habitat nodes in complex lattice networks exhibited lower temporal variability in population sizes, suggesting they support more stable ...
Yiwen Xu   +3 more
wiley   +1 more source

Phyocyanin extraction from microalgae Spirulina platensis assisted by ultrasound irradiation: effect of time and temperature [PDF]

open access: yesSongklanakarin Journal of Science and Technology (SJST), 2016
This research was aimed to extract phycocyanin from microalgae Spirulina platensis using an extraction assisted by ultrasound irradiation. The extraction was conducted by using variable of extraction time, temperature and ultrasound frequency, while ...
Hadiyanto   +3 more
doaj  

All-Cellulose Composites: A Review of Recent Studies on Structure, Properties and Applications

open access: yesMolecules, 2020
Nowadays, there is greater demand for greener materials in societies due to environmental consciousness, depleting fossil fuels and growing ecological concerns.
Behnaz Baghaei, Mikael Skrifvars
doaj   +1 more source

Geographic variation in walking activity in the red flour beetle Tribolium castaneum

open access: yesPopulation Ecology, EarlyView.
This study examined whether there is geographic variation in field populations, focusing on the moving activity in the red flour beetle Tribolium castaneum. Results showed significant differences in moving activity among field populations but no correlation with latitude or meteorological factors.
Kentarou Matsumura
wiley   +1 more source

Comparison and thermodynamic studies on complexation of adrenaline with some metal ions in mixed solvents

open access: yesMain Group Metal Chemistry, 2012
Two methods are described for the determination of stability constants of adrenaline with metal ions. In method A, the solution equilibria of Al(III) complex formed with bidentate ligand of adrenaline in acidic media at pH ranges of ≈3 to ≈5 have been ...
Gh Azar Bagheri, Gangtalab Masome
doaj   +1 more source

Application of the level-set method to the implicit solvation of nonpolar molecules

open access: yes, 2008
A level-set method is developed for numerically capturing the equilibrium solute-solvent interface that is defined by the recently proposed variational implicit solvent model (Dzubiella, Swanson, and McCammon, Phys. Rev. Lett. {\bf 104}, 527 (2006) and J.
Allen M. P.   +8 more
core   +1 more source

Recycling of solvent used in a solvent extraction of petroleum hydrocarbons contaminated soil. [PDF]

open access: yes, 2011
The application of water washing technology for recycling an organic composite solvent consisting of hexane and pentane (4:1; TU-A solvent) was investigated for extracting total petroleum hydrocarbons (TPH) from contaminated soil. The effects of water
Coulon, Frederic   +5 more
core   +1 more source

Polder maps: improving OMIT maps by excluding bulk solvent

open access: yesActa Crystallographica Section D: Structural Biology, 2017
Residual OMIT maps can be improved by the selective exclusion of bulk solvent from the OMIT region.
D. Liebschner   +6 more
semanticscholar   +1 more source

occumb: An R package for site occupancy modeling of eDNA metabarcoding data

open access: yesPopulation Ecology, EarlyView.
This study introduces a new R package, occumb, for the convenient application of site occupancy modeling using environmental DNA (eDNA) metabarcoding data. We outline a data analysis workflow, including data setup, model fitting, model assessment, and comparison of potential study settings based on model predictions, all of which can be performed using
Keiichi Fukaya, Yuta Hasebe
wiley   +1 more source

O emprego de lipases como agentes de resolução cinética de enantiômeros em síntese orgânica: aspectos gerais sobre a influência do solvente

open access: yesQuímica Nova, 1999
In organic synthesis, lipases are the most frequently used biocatalysts. They are efficient stereoselective catalysts in the kinetic resolution of a wide variety of chiral compounds.
Costa Valentim Emilio Uberti   +1 more
doaj  

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