Results 61 to 70 of about 217,272 (213)

Peak-Seeking Optimization of Trim for Reduced Fuel Consumption: Architecture and Performance Predictions

, 2013
A peak-seeking control approach for real-time trim configuration optimization for reduced fuel consumption has been developed by researchers at the National Aeronautics and Space Administration (NASA) Dryden Flight Research Center to address the goals of
J. Schaefer, N. Brown
semanticscholar   +1 more source

β‐Catenin localization in the ctenophore Mnemiopsis leidyi suggests an ancestral role in cell adhesion and nuclear function

Developmental Dynamics, EarlyView.
Abstract Background The emergence of multicellularity in animals marks a pivotal evolutionary event, which was likely enabled by molecular innovations in the way cells adhere and communicate with one another. β‐Catenin is significant to this transition due to its dual role as both a structural component in the cadherin–catenin complex and as a ...
Brian M. Walters, Lucas J. Guttieres, Mayline Goëb, Stanley J. Marjenberg, Mark Q. Martindale, Athula H. Wikramanayake   +5 more
wiley   +1 more source

A Study on Effect Analysis of Trajectory-Based Arrival Management using Continuous Descent Operations

Journal of the Korean Society for Aviation and Aeronautics, 2022
Eunmi Oh, Dae-Hoon Jeon
semanticscholar   +1 more source

Mission Planner Algorithm for Urban Air Mobility Initial Performance Characterization [PDF]

In this paper, an initial characterization was performed of the Mission Planner algorithm developed by NASA for Urban Air Mobility (UAM) operations research.
Butler, Ricky W., Guerreiro, Nelson M., Hagen, George E., Maddalon, Jeffrey M.   +3 more
core   +1 more source

History and experience of overcoming thermal barriers in rocket and space technology: 2. ballistic and sliding descent of spaceships

13TH INTERNATIONAL SCIENTIFIC CONFERENCE ON AERONAUTICS, AUTOMOTIVE AND RAILWAY ENGINEERING AND TECHNOLOGIES (BulTrans-2021), 2022
S. Reznik, P. Prosuntsov
semanticscholar   +1 more source

Wearable Multifunctional Health Monitoring Systems Enabled by Ultrafast Flash‐Induced 3D Porous Graphene

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Wearable multifunctional health monitoring system was developed for real‐time biosignal detection. Porous graphene was rapidly synthesized using a flash lamp, and defect‐free electrodes were fabricated with carbon nanotube (CNT)‐polydimethylsiloxane (PDMS) nanocomposite ink via screen printing.
Se Jin Choi, Chan Hyeok Kim, Jeong Hyeon Kim, Kang Hyeon Kim, Sang Yoon Park, Yu Jin Ko, Hosung Kang, Young Bin Kim, Yu Mi Woo, Jae Young Seok, Bongchul Kang, Chang Kyu Jeong, Kwi‐Il Park, Geon‐Tae Hwang, Jung Hwan Park, Han Eol Lee   +15 more
wiley   +1 more source

Architectural Decisions for Communications Satellite Constellations to Maintain Profitability While Serving Uncovered and Underserved Communities

International Journal of Satellite Communications and Networking, Volume 41, Issue 1, Page 82-97, January/February 2023., 2023
This paper analyzes which constellation characteristics provide the best global coverage at the lowest operational cost. Our analysis has found that geostationary and medium Earth orbit satellite constellations have the highest likelihood of profitability. LEO networks are more expensive, but if designed wisely, they can be competitive.
Inigo del Portillo, Sydney I. Dolan, Bruce G. Cameron, Edward F. Crawley   +3 more
wiley   +1 more source

Composite impact vector control based on Apollo descent guidance

Chinese Journal of Aeronautics, 2021
K. S. Erer, Raziye Tekin, M. Özgören
semanticscholar   +1 more source

Thermal and concentration analysis of two immiscible fluids flowing due to ciliary beating

Ain Shams Engineering Journal
This article explores the flow properties with mass and heat transfer of multilayered flow of two immiscible fluids (Phan-Thien-Tanner and Jeffrey fluid models) flowing due to ciliary beating in a channel, which is beneficial in different applications ...
Hulin Huang, Sidra Shaheen, Kottakkaran Sooppy Nisar, M.B. Arain   +3 more
doaj  

Contactless Conductivity Detection for Capillary Electrophoresis—Developments From 2020 to 2024

ELECTROPHORESIS, EarlyView.
ABSTRACT The review covering the development of capillary electrophoresis with capacitively coupled contactless conductivity detection from 2020 to 2024 is the latest in a series going back to 2004. The article considers applications employing conventional capillaries and planar lab‐on‐chip devices as well as fundamental and technical developments of ...
Peter C. Hauser, Pavel Kubáň
wiley   +1 more source