Results 51 to 60 of about 8,235,247 (329)

Laser Metal Powder Deposition of Titanium Microalloyed HSLA Steel FeC0.12Si0.25Mn1.3

open access: yesAdvanced Engineering Materials, EarlyView.
This study investigates the additive manufacturing of titanium‐doped high‐strength low‐alloy (HSLA) steel via laser metal deposition. It reveals distinct process‐structure relationships for elemental powder blends compared to prealloyed feedstocks.
Olaf Stelling   +2 more
wiley   +1 more source

Life tables and demographic statistics of Russian wheat aphid (Hemiptera: Aphididae) reared at different temperatures and on different host plant growth stages

open access: yesEuropean Journal of Entomology, 2009
Laboratory experiments were used to investigate the influences of 25 combinations of temperature and barley plant growth stage (5 × 5 factorial combination of temperature and barley plant growth stage) on the development, survival and reproduction of the
Zhanshan (Sam), Edward J. BECHINSKI
doaj   +1 more source

Cultural turnover among Galápagos sperm whales [PDF]

open access: yesRoyal Society Open Science, 2016
While populations may wax and wane, it is rare for an entire population to be replaced by a completely different set of individuals. We document the large-scale relocation of cultural groups of sperm whale off the Galápagos Islands, in which two ...
Mauricio Cantor   +3 more
doaj   +1 more source

Biomass Native Structure Into Functional Carbon‐Based Catalysts for Fenton‐Like Reactions

open access: yesAdvanced Functional Materials, EarlyView.
This study indicates that eight biomasses with 2D flaky and 1D acicular structures influence surface O types, morphology, defects, N doping, sp2 C, and Co nanoparticles loading in three series of carbon, N‐doped carbon, and cobalt/graphitic carbon. This work identifies how these structural factors impact catalytic pathways, enhancing selective electron
Wenjie Tian   +7 more
wiley   +1 more source

An ecological field study of the water-rat Nectomys squamipes as a wild reservoir indicator of Schistosoma mansoni transmission in an endemic area

open access: yesMemorias do Instituto Oswaldo Cruz, 2006
Small mammals are found naturally infected by Schistosoma mansoni, becoming a confounding factor for control programs of schistosomiasis in endemic areas. The aims of this study were: to investigate the infection rates by S.
Rosana Gentile   +10 more
doaj   +1 more source

Winter Activity for Crapemyrtle Bark Scale, an Urban Landscape Pest

open access: yesHortScience, 2023
Scale insects are some of the most abundant and damaging pests of urban forests in North America. Despite their prevalence, scale insect emergence during the winter dormant season, which could contribute to their population growth and spread and thereby ...
Erika R. Wright   +4 more
doaj   +1 more source

Some statistical aspects of the long-term gill net monitoring programme for pike Esox lucius in Windermere (English Lake District) [PDF]

open access: yes, 2000
For more than 55 years, data have been collected on the population of pike Esox lucius in Windermere, first by the Freshwater Biological Association (FBA) and, since 1989, by the Institute of Freshwater Ecology (IFE) of the NERC Centre for Ecology and ...
Paxton, Charles, Winfield, Ian
core  

Cool Kitchen: Processing Starch and Eggshell Powder into Sustainable Coatings for Passive Daytime Cooling

open access: yesAdvanced Functional Materials, EarlyView.
A food‐grade cooling composite made from starch and recycled eggshell powder offers a scalable, ultra‐low‐cost solution for passive daytime radiative cooling. Easily prepared using basic kitchen tools, this material empowers communities, even in areas with limited infrastructure, to stay cooler during worsening summer heat waves.
Qimeng Song   +3 more
wiley   +1 more source

Significance of colour polymorphism in mountain populations of abundant leaf beetles (Coleoptera, Chrysomelidae)

open access: yesPirineos: Revista de Ecología de Montaña, 2001
[fr] Les Scarabées des feuilles deviennent spécialement communs, présentent de nombreuses espèces et sans doute peuvent jouer un rôle important sur le cycle de biomasse et le flux d'énergie des écosystèmes alpiens.
Y. E. Mikhailov
doaj   +1 more source

Dynamics of a map with power-law tail [PDF]

open access: yes, 2009
We analyze a one-dimensional piecewise continuous discrete model proposed originally in studies on population ecology. The map is composed of a linear part and a power-law decreasing piece, and has three parameters.
Avrutin V   +11 more
core   +3 more sources

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