Results 61 to 70 of about 3,067,292 (342)

Multiverse Predictions for Habitability: Origin of Life Scenarios

Universe, 2023
If the origin of life is rare and sensitive to the local conditions at the site of its emergence, then, using the principle of mediocrity within a multiverse framework, we may expect to find ourselves in a universe that is better than usual at creating ...
McCullen Sandora, Vladimir Airapetian, Luke Barnes, Geraint F. Lewis, Ileana Pérez-Rodríguez   +4 more
doaj   +1 more source

Constraining the Time Interval for the Origin of Life on Earth [PDF]

Astrobiology, 2018
Estimates of the time at which life arose on Earth make use of two types of evidence. First, astrophysical and geophysical studies provide a timescale for the formation of Earth and the Moon, for large impact events on early Earth, and for the cooling of
Ben K. D. Pearce, Andrew S. Tupper, R. Pudritz, P. Higgs   +3 more
semanticscholar   +1 more source

The Origin of Life from Primordial Planets

, 2010
The origin of life and the origin of the universe are among the most important problems of science and they might be inextricably linked. Hydro-gravitational-dynamics (HGD) cosmology predicts hydrogen-helium gas planets in clumps as the dark matter of ...
Gibson, Carl H., Schild, Rudolph E., Wickramasinghe, N. C.   +2 more
core   +1 more source

A Hydrothermal-Sedimentary Context for the Origin of Life

Astrobiology, 2018
Critical to the origin of life are the ingredients of life, of course, but also the physical and chemical conditions in which prebiotic chemical reactions can take place.
Frances Westall, K. Hickman‐Lewis, K. Hickman‐Lewis, N. Hinman, P. Gautret, Kathleen A. Campbell, J. Bréhéret, F. Foucher, A. Hubert, Stéphanie Sorieul, A. Dass, Terence P. Kee, Thomas Georgelin, Thomas Georgelin, A. Brack   +14 more
semanticscholar   +1 more source

Moving in the Dark: Enlightening the Spatial Population Ecology of European Cave Salamanders

Population Ecology, EarlyView.
We assessed individual interactions, movement ecology and activity patterns of a subterranean population of Speleomantes strinatii, applying spatial capture–recapture modeling to a photographic dataset of 104 individuals. ABSTRACT Space use and movement are fundamental aspects of organisms' ecology, mirroring individual fitness, behavior, and life ...
Giacomo Rosa, Andrea Costa, Sebastiano Salvidio   +2 more
wiley   +1 more source

Infection Models for Pine Wilt Disease on the Basis of Vector Behaviors

Population Ecology, EarlyView.
Infection models for pine wilt disease without vector density were built to estimate the transmission coefficient of the pathogenic nematode. The models successfully simulated the annual change in the density of infected trees for four pine stands. ABSTRACT Pine wilt disease is caused by the pinewood nematode (Bursaphelenchus xylophilus Steiner et ...
Katsumi Togashi
wiley   +1 more source

Rabbit carcasses as important vectors of multidrug-resistant Enterococcus faecalis, but not E. faecium: prevalence and molecular characterization from a study in Poland

BMC Veterinary Research
Background Numerous studies indicate that multidrug-resistant Enterococcus bacteria are widely present on the carcasses of various food-producing animal species as well as in facilities used for their production.
Przemysław Knysz, Krzysztof Szkucik, Michał Gondek   +2 more
doaj   +1 more source

Nutritional Quality and Oxidative Stability during Thermal Processing of Cold-Pressed Oil Blends with 5:1 Ratio of ω6/ω3 Fatty Acids

Foods, 2022
The growing awareness of consumers means that new products are sought after, which, apart from meeting the basic demand for macronutrients and energy, will have a positive impact on our health.
Dominik Kmiecik, Monika Fedko, Aleksander Siger, Przemysław Łukasz Kowalczewski   +3 more
doaj   +1 more source

Speciation Through the Lens of Population Dynamics: A Theoretical Primer on How Small and Large Populations Diverge

Population Ecology, EarlyView.
Population size and dynamics fundamentally shape speciation by influencing genetic drift, founder events, and adaptive potential. Small populations may speciate rapidly due to stronger drift, whereas large populations harbor more genetic diversity, which can alter divergence trajectories. We highlight theoretical models that incorporate population size
Ryo Yamaguchi, Hidaka Kubo, Tokuya Ogawa, Hayate Omura   +3 more
wiley   +1 more source

Heavy Metals as a Factor Increasing the Functional Genetic Potential of Bacterial Community for Polycyclic Aromatic Hydrocarbon Biodegradation

Molecules, 2020
The bioremediation of areas contaminated with hydrocarbon compounds and heavy metals is challenging due to the synergistic toxic effects of these contaminants.
Justyna Staninska-Pięta, Jakub Czarny, Agnieszka Piotrowska-Cyplik, Wojciech Juzwa, Łukasz Wolko, Jacek Nowak, Paweł Cyplik   +6 more
doaj   +1 more source