Results 61 to 70 of about 2,745 (210)

Quantifying CO2 Emissions From Smaller Anthropogenic Point Sources Using OCO‐2 Target and OCO‐3 Snapshot Area Mapping Mode Observations

Journal of Geophysical Research: Atmospheres, Volume 130, Issue 2, 28 January 2025.
Abstract We quantify CO2 emissions from smaller anthropogenic point sources compared with earlier satellite studies, which have mostly focused on mid‐sized (∼10 MtCO2/year) and larger fossil fuel burning power plants. Two types of Orbiting Carbon Observatory (OCO) observation modes are used: OCO‐2 Target mode and OCO‐3 Snapshot Area Mapping (SAM) mode.
Omid Moeini, Ray Nassar, Jon‐Paul Mastrogiacomo, Megan Dawson, Christopher W. O’Dell, Robert R. Nelson, Abhishek Chatterjee   +6 more
wiley   +1 more source

Serrated trailing edges for improving lift and drag characteristics of lifting surfaces [PDF]

, 1992
An improvement in the lift and drag characteristics of a lifting surface is achieved by attaching a serrated panel to the trailing edge of the lifting surface.
Bushnell, Dennis M., Holmes, Bruce J., Howard, Floyd G., Vijgen, Paul M. H. W.   +3 more
core   +1 more source

Comparative Analysis Among Different Performance Improvement Techniques for Wind Turbines in Terms of Energy and Economy for Small, Medium, and Large‐Scale Applications

International Journal of Energy Research, Volume 2025, Issue 1, 2025.
With a view to finding the best approach to maximize the wind energy harvesting from wind turbines, this research has focused towards assessing the effects of different innovative modifications to wind turbines at different wind speed conditions and comparing them in terms of aerodynamic performance, economy, and environmental impact.
Mim Mashrur Ahmed, Mahadi Hasan Masud, Md. Hasibul Hasan Himel, Mhia Md. Zaglul Shahadat, Mucahit Aydin   +4 more
wiley   +1 more source

Numerical modelling of aerodynamics for applications in sports car engineering [PDF]

, 1930
Body crematedhttps://stars.library.ucf.edu/cfm-ch-memoranda-1930/1846/thumbnail ...
Marques-Bruna, Pascual, Spiridon, Elena
core   +1 more source

Flow Control-Based Aerodynamic Enhancement of Vertical Axis Wind Turbines for Offshore Renewable Energy Deployment

Journal of Marine Science and Engineering
As wind energy development continues to expand toward nearshore and deep-sea regions, enhancing the aerodynamic efficiency of vertical axis wind turbines (VAWTs) in complex marine environments has become a critical challenge. To address this, a composite
Huahao Ou, Qiang Zhang, Chun Li, Dinghong Lu, Weipao Miao, Huanhuan Li, Zifei Xu   +6 more
doaj   +1 more source

A novel method for estimating avian roost sizes using passive acoustic recordings

Ecological Solutions and Evidence, Volume 5, Issue 4, October–December 2024.
The Javan myna, Acridotheres javanicus, is an invasive communally roosting species in Singapore (left panel, photo taken by J.J. Harrison). We deployed a passive acoustic recorder (centre panel) and analysed their roost chorus by applying machine learning methods. Our estimated bird counts over time using our acoustic model matched the automated visual
Malcolm C. K. Soh, Mandar A. Chitre, Matthias Hoffmann‐Kuhnt, Benjamin P. Y.‐H. Lee, Kenneth B. H. Er   +4 more
wiley   +1 more source

Comprehensive study of vortices interaction and blades height effect in a Darrieus vertical axis wind turbine with J‐type blades

Energy Science &Engineering, Volume 12, Issue 10, Page 4371-4393, October 2024.
This study utilizes a 3D numerical analysis to examine the influence of different vortices generated on turbine efficiency with straight and J‐type blades. The numerical simulation of this study employs the Reynolds‐averaged Navier–Stokes equations and ‎sliding ‎mesh techniques ‎to model the rotational motion of blades more accurately about the turbine
Ramin Farzadi, Derrick Gharapetian, Majid Bazargan   +2 more
wiley   +1 more source

Enhanced aerodynamic performance of NACA4412 airfoil through integrated plasma actuator and Gurney flap flow control

Results in Engineering
This study explores advanced flow control techniques for enhancing the aerodynamic efficacy of the NACA4412 airfoil. By employing a combination of passive and active flow control methods, this research aims to improve lift and reduce drag, particularly ...
K.V. Karthikeyan, R. Harish
doaj   +1 more source

Elements i dispositius aerodinàmics en la Formula 1. L'Aleró davanter. [PDF]

, 2016
Aquest projecte consisteix en l'estudi teòric dels diferents elements i dispositius aerodinàmics que incorporen els cotxes de la Fórmula 1.
Gabarró I Martín, Arnau
core  

Resisting change: Explaining education policy reforms in Ghana

Politics &Policy, Volume 52, Issue 2, Page 384-402, April 2024.
Abstract This article examines the complexities surrounding the implementation of comprehensive sexuality education (CSE) within Ghana's basic education system, exploring the intersection of religious, cultural, and political factors. Introducing CSE has sparked significant public discourse and resistance in Ghana, where religious and cultural beliefs ...
Saaka Sulemana Saaka
wiley   +1 more source