Results 81 to 90 of about 104,496 (248)

Niche differences between two sympatric whiptail lizards (Cnemidophorus abaetensis and C. ocellifer, Teiidae) in the restinga habitat of northeastern Brazil

open access: yesBrazilian Journal of Biology
Differences among sympatric lizard species usually result from differences in the use of three resources: space, time and food or some combination of these three.
EJR. Dias, CFD. Rocha
doaj   +1 more source

Design, Modeling, and Experimentation of Polar Robot: Assisted Sail and Multimode Motion for Energy Saving

open access: yesAdvanced Intelligent Systems, EarlyView.
This article proposes a polar robot that utilizes assisted sail and multimode motion to achieve energy‐saving. The design, modeling, and experimental methods are introduced. The results show that the energy‐saving effect of the robot using a multimode energy savings control strategy reaches 21.19%, providing technical support for long‐term polar ...
Yongsheng Luo   +8 more
wiley   +1 more source

Feeding ecology of the lizard Tropidurus oreadicus Rodrigues 1987 (Tropiduridae) at Serra dos Carajás, Pará state, northern Brazil

open access: yesBrazilian Journal of Biology
Tropidurus species commonly prey on arthropods, but they may also feed on vertebrates and plant material. The lizard Tropidurus oreadicus (Tropiduridae) is common in open vegetation habitats and generally has sexual dimorphism.
CFD. Rocha, CC. Siqueira
doaj   +1 more source

CFD simulation of the wind field over a terrain with sand fences: Critical spacing for the protected soil area [PDF]

open access: green, 2018
Izael A. Lima   +5 more
openalex   +1 more source

Skin‐Like Airflow Odometry for Micro Aerial Vehicles Based on Distributed Thermal Anemometers

open access: yesAdvanced Intelligent Systems, EarlyView.
A novel bioinspired skin‐like airflow odometry system for micro aerial vehicles employs distributed thermal anemometers to enable motion estimation in GNSS‐denied environments. Computational fluid dynamics simulation validates sensor deployment feasibility, while a transformer‐enhanced gated recurrent unit network extracts high‐precision airflow ...
Weicheng Di   +7 more
wiley   +1 more source

Occurrence and distribution of the exotic lizard Hemidactylus mabouia Moreau de Jonnès, 1818 in Ilha Grande, RJ, Brazil

open access: yesBrazilian Journal of Biology
The gekkonid lizard Hemidactylus mabouia is an exotic species in Brazil and is found in different ecosystems. This species was recorded at Ilha Grande, RJ, one of the largest insular remains of the Atlantic Rainforest in Brazil.
CFD Rocha, HG Bergallo
doaj   +1 more source

Ultra‐Efficient Kidney Stone Fragment Removal via Spinner‐Induced Synergistic Circulation and Spiral Flow

open access: yesAdvanced Intelligent Systems, EarlyView.
Leveraging spinning‐induced localized suction, the spinner device enables ultra‐efficient removal of kidney stone fragments, capturing a larger quantity of fragments from distances exceeding 20 mm. The spinner significantly improves the efficiency and effectiveness of stone fragment removal by reducing operative time, increasing stone‐free rates, and ...
Yilong Chang   +3 more
wiley   +1 more source

Discrete and Continuous Adjoint-Based Aerostructural Wing Shape Optimization of a Business Jet

open access: yesFluids
This article presents single- and multi-disciplinary shape optimizations of a generic business jet wing at two transonic cruise flow conditions. The studies performed are based on two high-fidelity gradient-based optimization tools, assisted by the ...
Konstantinos Tsiakas   +7 more
doaj   +1 more source

Numerical Simulation of Flow Field around Space Reentry Capsule and Studying the Effects of Angle of Attack Variations on Flow Structure [PDF]

open access: yesفناوری در مهندسی هوافضا, 2019
In this research, the flow field around the space re-entry capsule, which has blunt and symmetric geometry has been investigated. The simulation of the flow around aerial vehicles in the hypersonic flight regime is the one of the topics discussed in ...
Mohammad Kazem Moayyedi   +1 more
doaj  

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