Results 41 to 50 of about 35,942 (282)

Single‐Cell Transcriptomic Atlases of Camels and Cattle Unravel Molecular Evolution of Digestive and Metabolic Systems

open access: yesAdvanced Science, EarlyView.
We generated multi‐tissue single‐cell transcriptomic atlases of camels and cattle, uncovering conserved and lineage‐specific cellular features across digestive and metabolic systems. Cross‐species comparisons revealed the evolutionary origin of the camel glandular sac and identified novel cell populations linked to physiological specialization ...
Tao Shi   +22 more
wiley   +1 more source

Evaluación de la satisfacción del turista y la congestión en la práctica de observación de ballenas jorobadas, el caso de Puerto López – Ecuador [PDF]

open access: yes, 2019
[EN] The effect of crowding on tourist satisfaction is a widely studied aspect. Its knowledge is valuable not only to guide ordering of tourism activity but also to ensure a satisfactory experience that contributes to its economic sustainability. However,
Molina Molina, Gina   +1 more
core   +4 more sources

Neural Network‐Based Permittivity Engineering of Magnetic Absorbers for Customizable Microwave Absorption

open access: yesAdvanced Science, EarlyView.
A neural network‐enabled permittivity engineering paradigm is introduced, transcending traditional trial‐and‐error design. By decoupling electromagnetic parameters and screening a high‐throughput feature space, an ultrathin (1.0 mm) magnetic absorber is inversely designed, experimentally achieving a superior and customizable 5.1 GHz bandwidth and ...
Chenxi Liu   +9 more
wiley   +1 more source

The economic benefits of whale watching in El Vizcaíno Biosphere Reserve, Mexico

open access: yesEconomía, Sociedad y Territorio, 2016
This paper attempts to determine the economic value generated by whale watching at El Vizcaíno Biosphere Reserve/Lower California. Based on a representative sample survey, the analysis focuses on identifying specific visitor segments, their respective ...
Ludger Brenner   +2 more
doaj   +1 more source

Spatial and Temporal Effects of Whale Watching on a Tourism-Naive Resident Population of Bottlenose Dolphins (Tursiops truncatus) in the Humboldt Penguin National Reserve, Chile

open access: yesFrontiers in Marine Science, 2021
Standardized measures of behavior can be powerful tools for assessing the impact of whale watching activities on natural populations of cetaceans. To determine the possible impact of tourism on dolphins between a period without whale watching (1989–1992)
Frederick Toro   +18 more
doaj   +1 more source

Adaptive Control of Run‐and‐Tumble Escape in Pursuit‐Evasion Dynamics of Intelligent Active Particles

open access: yesAdvanced Intelligent Systems, EarlyView.
The pursuit‐evasion game is studied for two adversarial active agents, modeled as deterministic self‐steering pursuer and stochastic, cognitive evader. For a successful evasion strategy, the motile target has to exploit all available pursuer information, e.g., by tuning the tumbling frequency with the pursuer distance.
Segun Goh   +2 more
wiley   +1 more source

An Evaluation of Ad Hoc Presence-Only Data in Explaining Patterns of Distribution: Cetacean Sightings from Whale-Watching Vessels

open access: yesInternational Journal of Zoology, 2012
The analysis of presence-only data is a problem in determining species distributions and accurately determining population sizes. The collection of such data is common from unequal or nonrandomised effort surveys, such as those surveys conducted by ...
Louisa K. Higby   +2 more
doaj   +1 more source

Observations of long-finned pilot whale (Globicephala melas) calves less than one year old, including neonates and a very recently born calf, in northern Norway

open access: yesPolar Research, 2023
Long-finned pilot whales (Globicephala melas) are a widespread, highly social deep-diving cetacean species ranging from the sub-tropics to the High Arctic. Information on this species’ life history at higher latitudes is limited.
Seán A. O’Callaghan
doaj   +1 more source

Shipping noise in whale habitat: Characteristics, sources, budget, and impact on belugas in Saguenay-St. Lawrence Marine Park hub

open access: yes, 2012
WOSInternational audienceA continuous car ferry line crossing the Saguenay Fjord mouth and traffic from the local whale-watching fleet introduce high levels of shipping noise in the heart of the Saguenay-St. Lawrence Marine Park.
Gervaise, Cedric   +4 more
core   +3 more sources

Helmeted hornbill cranial kinesis: Balancing mobility and stability in a high‐impact joint

open access: yesThe Anatomical Record, EarlyView.
Abstract Prokinesis—in which a craniofacial joint allows the rostrum to move relative to the braincase—is thought to confer diverse advantages in birds, mostly for feeding. A craniofacial joint would, however, be a weak link if cranial stability is important. Paradoxically, we have identified a craniofacial joint in helmeted hornbills (Rhinoplax vigil),
Mike Schindler   +8 more
wiley   +1 more source

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