Results 71 to 80 of about 1,718,290 (313)

Emergence of Secondary Airports and Dynamics of Regional Airport Systems in the United States [PDF]

, 2006
With the growing demand for air transportation and limited capacity at major airports, there is a need to increase the capacity of airport systems at the metropolitan area level.
Bonnefoy, Philippe A, Hansman, R. John
core  

Advancing Research on Biomaterials and Biological Materials with Scanning Electron Microscopy under Environmental and Low Vacuum Conditions

Advanced Engineering Materials, EarlyView.
Herein, environmental scanning electron microscopy (ESEM) is discussed as a powerful extension of conventional SEM for life sciences. By combining high‐resolution imaging with variable pressure and humidity, ESEM allows the analysis of untreated biological materials, supports in situ monitoring of hydration‐driven changes, and advances the functional ...
Jendrian Riedel, Lea Dierker, Antoine Eyram Kwame, Kim Nora Wagner, Jonas J. Unterholzner, Jan‐Henning Dirks, Dorothea Brüggemann   +6 more
wiley   +1 more source

Electronic/electric technology benefits study [PDF]

The benefits and payoffs of advanced electronic/electric technologies were investigated for three types of aircraft. The technologies, evaluated in each of the three airplanes, included advanced flight controls, advanced secondary power, advanced avionic
Cronin, M. J., Howison, W. W.
core   +1 more source

The Palladium-Catalyzed Aerobic Kinetic Resolution of Secondary Alcohols: Reaction Development, Scope, and Applications [PDF]

, 2009
The first palladium-catalyzed enantioselective oxidation of secondary alcohols has been developed, utilizing the readily available diamine (-)-sparteine as a chiral ligand and molecular oxygen as the stoichiometric oxidant. Mechanistic insights regarding
Bagdanoff, Jeffrey T., Caspi, Daniel D., Ebner, David C., Ferreira, Eric M., McFadden, Ryan M., Stoltz, Brian M., Trend, Raissa M.   +6 more
core   +2 more sources

Unidirectional Tape‐Based Composites from Hemp and Pineapple Leaf Fiber: Mechanical Performance in Conventional and Bio‐Based Matrices

Advanced Engineering Materials, EarlyView.
The study investigates novel semi‐finished products made of unidirectionally arranged hemp or pineapple leaf fiber‐reinforced composites produced from different matrices. The materials are analyzed in terms of their mechanical and interfacial properties and void content.
Nina Graupner, Raja Bade, Valentin Ackermann, Roja M. Baumann, Corvin Bischoff, Jona F. Ebeling, Oskar Glenz, Marlo Groh, Jonathan Groth, Finja Hiller, Tom Hirschmüller, Felix Menke, Syntcha Ngantchou Lecdou, Mika Ohler, Daniel Rafii Vardiny, Darius Richter, Dario Röper, Henrik Schumacher, Theresa Stein, Benjamin Vorbeck, Elisabeth Wermter, Kay Kölzig, Jörg Müssig   +22 more
wiley   +1 more source

Pericardiocentesis Complicated by Pneumopericardium

JACC: Case Reports, 2019
This report presents the case of pneumopericardium with trapped air in the pericardial sac occurring after a pericardiocentesis, probably caused by air leakage secondary to a defect in the drainage system and/or accidental removal of the pericardial tube.
Tardu Özkartal, MD, Susanne A. Schlossbauer, MD, Francesco Faletra, MD, Giovanni Pedrazzini, MD   +3 more
doaj   +1 more source

Finite element transient modelling for whole engine-secondary air system thermomechanical analysis

Energy Procedia, 2017
Abstract This paper presents a new procedure developed in cooperation with Ansaldo Energia and aimed to predict metal temperatures in a gas turbine whole engine with an axisymmetric transient finite element approach. The 2D model includes a dedicated thermal fluid network where mass flow rates and pressure distributions are provided by external fluid
Giuntini, Sabrina, Andreini, Antonio, CAPPUCCINI, GIULIO, Facchini, Bruno   +3 more
openaire   +3 more sources

Advanced nozzle and engine components test facility [PDF]

A test facility for conducting scaled advanced nozzle and engine component research is described. The CE-22 test facility, located in the Engine Research Building of the NASA Lewis Research Center, contains many systems for the economical testing of ...
Beltran, Luis R., Delrosario, Ruben, Delroso, Richard L.   +2 more
core   +1 more source

Rheocasting versus Die Casting: An Insight into the Low‐Cycle Fatigue Behavior of AlSi7Mg0.6

Advanced Engineering Materials, EarlyView.
The study compares rheocast lightweight components with high‐pressure die cast materials regarding microstructure and fatigue behavior. Rheocast process offers higher efficiency due to lower casting temperatures. Despite some microstructural differences, both processes show similar strengths (yield strength 125 MPa, tensile strength 240 MPa).
Julia Richter, Thomas Wegener, Andreas Schilling, Martin Fehlbier, Thomas Niendorf   +4 more
wiley   +1 more source

Effect of a System Air Conditioner on Local Air Quality in a Four-bed Ward

Aerosol and Air Quality Research, 2020
In a ward where many patients are hospitalized, effective ventilation is important because airborne viruses may cause secondary infection. This study investigates the changes in the air quality in a four-bed ward according to the use of a ventilation ...
Jungsuk Lee, Jung-Hun Noh, Kwang-Chul Noh, Young-Won Kim, Se-Jin Yook   +4 more
doaj   +1 more source