Results 51 to 60 of about 1,448,996 (320)

Bio‐Based Piezoelectrets from Polylactic Acid and Natural Waxes: A Sustainable Approach for Energy Harvesting

open access: yesAdvanced Energy and Sustainability Research, EarlyView.
A novel polylactic acid/wax electret composite is developed, combining biodegradability with long‐term charge stability. The study investigates charge storage behavior, structural morphology, and thermal performance. Results reveal a notable charge retention recovery after thermal stress and exhibit stable surface potential over 2 kV. This eco‐friendly
Gabriele Perna   +6 more
wiley   +1 more source

Color polymorphism in Anemone coronaria: Correlations with soil, climate, and flowering phenology

open access: yesAmerican Journal of Botany, EarlyView.
Abstract Premise Flower color polymorphism (FCP) is thought to be driven by multiple selection agents. Although widely associated with visual attraction of multiple pollinators, FCP is also often correlated with abiotic factors. We explored the links between abiotic conditions, flowering phenology, and FCP in the winter‐flowering geophyte Anemone ...
Tzlil Labin   +4 more
wiley   +1 more source

Modelling of bubble nucleation in trachy-phonolitic magmas: implications for the dynamics of ash-rich eruptions [PDF]

open access: yes, 2012
Nucleation of water gas bubbles in trachyphonolitic magmatic melts has been investigated integrating theory and numerical modelling with decompression experiments and analysis of natural ash samples of explosive eruptions.
Colucci, Simone
core   +1 more source

Bulletin / [PDF]

open access: yes, 1966
v.
Chicago Natural History Museum.
core   +1 more source

How large are departures from lithostatic pressure? Constraints from host-inclusion elasticity [PDF]

open access: yes, 2015
Minerals trapped as inclusions within other host minerals will develop non-lithostatic pressures during both prograde and retrograde metamorphism because of the differences between the thermo-elastic properties of the host and inclusion phases.
Adams   +39 more
core   +1 more source

Gypsum Gardens: Self‐Assembled Tubular Structures of Calcium Sulfate with Relevance for the Detection of Extraterrestrial Life

open access: yesAngewandte Chemie International Edition, EarlyView.
Chemical gardens are self‐assembled architectures with “life‐like” morphologies that form in the absence of any biological activity. Here we show that such structures can also be obtained by contacting reservoirs of calcium and sulfate ions, under conditions that plausibly emulate those prevailing on early Mars.
Selina Reigl   +5 more
wiley   +1 more source

On the origin of the North Pacific arcs [PDF]

open access: yes, 2004
We present a new hypothesis that relates global plate tectonics to the formation of marginal basins, island arcs, spreading ridges and arc-shaped mountain belts around the North Pacific Ocean.
Fornós, Joan J.   +3 more
core   +3 more sources

Development of Graphene Oxide@Hyperbranched Polyglycerol Nanofluids for Application in Enhanced Oil Recovery

open access: yesJournal of Applied Polymer Science, EarlyView.
Schematic representation of graphene oxide (GO) nanofluid functionalization with surfactants or hyperbranched polyglycerol (HPG) for enhanced oil recovery (EOR). The diagram highlights: (1) wettability alteration in limestone and sandstone reservoirs; (2) nanofluid injection into porous media; (3) atomic force microscopy (AFM) characterization of oil ...
Kelly C. B. Maia   +6 more
wiley   +1 more source

Sonar research conducted during the period 1 January - 31 March 1961 [PDF]

open access: yes, 1961
This is a report of activities supported under Contract NObsr-72521 for the period 1 January through 31 March 1961. It also contains mention of other reports, papers, and undertakings of the submarine geophysics group (listed under "Personnel") which ...
Woods Hole Oceanographic Institution, /
core   +1 more source

Comparing cranial biomechanics between Barbourofelis fricki and Smilodon fatalis: Is there a universal killing‐bite among saber‐toothed predators?

open access: yesThe Anatomical Record, EarlyView.
Abstract Saber‐tooths, extinct apex predators with long and blade‐like upper canines, have appeared iteratively at least five times in the evolutionary history of vertebrates. Although saber‐tooths exhibit a relatively diverse range of morphologies, it is widely accepted that all killed their prey using the same predatory behavior. In this study, we CT‐
Borja Figueirido   +2 more
wiley   +1 more source

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