Results 41 to 50 of about 1,401 (134)

Altered Phenotypic Responses of Asexual Arctic Daphnia After 10 Years of Rapid Climate Change

open access: yesGlobal Change Biology, Volume 31, Issue 3, March 2025.
Freshwater ecosystems in the Arctic are important sentinels for climate change, but not much is known about the potential for rapid adaptation of their asexually reproducing key zooplankton member. We compared thermal and hypoxia tolerance of resurrected dormant stages of Daphnia from an Arctic meromictic lake to that of their modern descendants.
Athina Karapli‐Petritsopoulou   +4 more
wiley   +1 more source

Far-and mid-infrared properties of carbon layers elaborated by plasma sputtering [PDF]

open access: yes, 2016
International audienceThe far-and mid-infrared reflectivity spectra of two carbon layers deposited on pure (100) silicon substrates by DC magnetron sputtering were investigated at room temperature in the 10-5000 cm-1 wavenumber range.
Ammar, Mohamed Ramzi   +5 more
core   +4 more sources

In Bio‐Based Self‐Healing Concrete: Effect of Nutrient Components of the Media on Mechanical Properties and Environmentally Friendly Concrete Development

open access: yesAdvances in Civil Engineering, Volume 2025, Issue 1, 2025.
More durable and eco‐friendly alternatives to concrete are needed to meet the growing global demand for this material. About 7% of all human‐caused CO2 emissions come from cement production. Integrating bacteria into concrete can prolong its lifespan, improve durability, and promote the sustainability of the concrete.
Habtamu Miju Teshome   +2 more
wiley   +1 more source

Filaments for 3D Printing of Iridescent Structural Colors

open access: yesAdvanced Optical Materials, Volume 12, Issue 34, December 3, 2024.
Structural colors are a sustainable alternative to conventional colorants, due to their longevity and flamboyant appearance. Inspired by nature, it is presented a scalable strategy to prepare polymeric filaments with iridescent‐shimmering structural color.
Lukas Siegwardt   +2 more
wiley   +1 more source

Constitutive Androstane Receptor Regulates Germ Cell Homeostasis, Sperm Quality, and Male Fertility via Akt‐Foxo1 Pathway

open access: yesAdvanced Science, Volume 11, Issue 43, November 20, 2024.
This study highlights the role of the constitutive androstane receptor (Car), a receptor of endo and xeno‐biotics, in testicular pathophysiology. The results indicate that Car inhibition impaired male fertility due to altered sperm quality, specifically histone retention, which is correlated with offspring's survival. This work demonstrates that Car is
Mélusine Monrose   +16 more
wiley   +1 more source

Biodegradation of phenol using bacteria from different brackishwater habitats [PDF]

open access: yes, 1999
The objective of this investigation was to determine the ability of specifically adapted bacteria to degrade phenol, when used as sole source of carbon in mineral salts medium at higher concentrations than that are generally present in the natural ...
Chandrika, V, Imelda, Joseph
core  

Structural Colors Derived from the Combination of Core–Shell Particles with Cellulose

open access: yesAdvanced Photonics Research, Volume 5, Issue 10, October 2024.
The melt‐shear organization technique uses tailor‐made core–shell particles to produce opal films with structural colors. Cellulose is incorporated into these films to improve the wetting behavior and the films’ mechanical properties while maintaining the composites’ structural color.
Regina Leiner   +6 more
wiley   +1 more source

Simulación numérica de procesos de compactación de pulvimateriales. Parte 2: Validación y aplicaciones industriales [PDF]

open access: yes, 1998
En la primera parte de este trabajo se describió el modelo numérico propuesto para la simuación del proceso de compactación de pulvimateriales.
Cante Terán, Juan Carlos   +2 more
core   +1 more source

Fermentation and purification strategies for the production of betulinic acid and its lupane-type precursors in Saccharomyces cerevisiae [PDF]

open access: yes, 2017
Microbial production of plant derived, biologically active compounds has the potential to provide economic and ecologic alternatives to existing low productive, plant-based processes. Current production of the pharmacologically active cyclic triterpenoid
Arnezeder   +48 more
core   +1 more source

Pig manure degradation and carbon emission: Measuring and modeling combined aerobic–anaerobic transformations

open access: yesJournal of Environmental Quality, Volume 53, Issue 5, Page 589-603, September/October 2024.
Abstract Greenhouse gas emissions from liquid livestock manure storage significantly contribute to global warming. Accurate farm‐scale models are essential for predicting these emissions and evaluating manure management strategies, but they rely on multiple parameters describing carbon loss dynamics.
Frederik R. Dalby   +3 more
wiley   +1 more source

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