Results 91 to 100 of about 2,197 (263)

The Three-Dimensional Transient Simulation of Cross-Shaped Grains in Hybrid Rocket Motors

open access: yesAerospace
The process of spacecraft entry, deceleration, landing, and ascent requires high specific impulse, high reliability, and high-precision thrust adjustments for the power system.
Xiangyu Meng   +5 more
doaj   +1 more source

Defining Lines of Defense Against Change Propagation Using Cause‐Consequence Analysis

open access: yesSystems Engineering, EarlyView.
ABSTRACT Complex engineered systems are the core of modern society. So that engineered systems and infrastructure can be sustainable and offer value over the course of their lifespan, there is a growing need for such systems to be changeable. Yet, establishing and operationalizing changeability can be challenging due to the potential for change ...
Lindsey Jacobson, Scott Ferguson
wiley   +1 more source

Undergraduate Women Socially Develop Science Identities Through Everyday Talk and Recognition: A Mixed Methods Study

open access: yesJournal of Research in Science Teaching, EarlyView.
ABSTRACT Science identity is a key predictor of persistence in STEM. Although prior research has established the importance of social recognition for identity development, less is known about how recognition operates within informal, everyday interactions.
Jeanette Zambrano   +2 more
wiley   +1 more source

Dynamic Testing of a Hybrid-Propellant Water-Breathing Ram Rocket in Underwater Cruise Conditions

open access: yesJournal of Marine Science and Engineering
High-speed submerged marine vehicles, such as torpedoes, traveling at velocities of an order of 100 m/s and above, require powerful propulsion to overcome the tremendous hydrodynamic drag.
Sagi Dinisman   +2 more
doaj   +1 more source

Transformation of Combustion Nanocatalysts inside Solid Rocket Motor under Various Pressures. [PDF]

open access: yesNanomaterials (Basel), 2019
Li JQ   +6 more
europepmc   +1 more source

Causes, treatment and outcome of external ear canal tears and avulsions in cats and dogs: 24 cases (2008‒2024)

open access: yesVeterinary Record, EarlyView.
Abstract Background This study aimed to evaluate the causes, treatment options and associated complications of ear canal tears and avulsions in dogs and cats. Methods This retrospective clinical study includes 14 cats and 10 dogs diagnosed with external ear canal tears and avulsions using otoscopy and/or computed tomography.
Eva M. Billau, Cetina Thiel
wiley   +1 more source

Experimental Study of Polyurethane-Based Fuels with Addition of Paraffin and Aluminum for Hybrid Rocket Motors

open access: yesJournal of Aerospace Technology and Management, 2013
http://dx.doi.org/10.5028/jatm.v5i3.228 Experimental investigation was conducted to determine the relative propulsive and combustion behavior of several polyurethane-based solid-fuel formulations containing 30% w/w of paraffin or 10% of aluminum powder.
Susane Ribeiro Gomes   +3 more
doaj  

How many shots are enough? Optimizing precision measurements when testing lead‐free ammunition

open access: yesWildlife Biology, EarlyView.
Growing concern about lead exposure in scavenging wildlife and the consumers of game meat has increased interest in evaluating the performance of lead‐free rifle ammunition. Testing both accuracy and precision helps ensure reliable shot placement while reducing the risk of non‐fatal woundings.
Michael McTee   +2 more
wiley   +1 more source

Organic Representation as a Critical Media Approach to Leadership Studies in Popular Culture

open access: yesNew Directions for Student Leadership, Volume 2025, Issue 185, Page 75-80, Spring 2025.
ABSTRACT This article applies the critical media concept of organic representation to leadership studies as an analytic of how various creators in popular culture today are not just writing inclusive storytelling but, more notably, modeling new modes of production and self‐presentation that are actively challenging hegemonic industry practices and ...
Raffi Sarkissian
wiley   +1 more source

APTNet: A Condition‐Sensitive Modulation Framework for Surface Pressure Prediction on Supersonic Aircraft

open access: yesCAAI Transactions on Intelligence Technology, EarlyView.
ABSTRACT Accurate surface‐pressure prediction over broad operating envelopes is critical for supersonic aerodynamic analysis and design. To overcome the bottlenecks of traditional computational fluid dynamics (CFD) in real‐time performance and computational efficiency, data‐driven deep learning methods have emerged. However, existing data‐driven models
Hongbin Xu, Yin Long, Junlin Wu
wiley   +1 more source

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