Results 11 to 20 of about 1,574 (148)

The ROTSE-III Robotic Telescope System [PDF]

open access: yes, 2002
The observation of a prompt optical flash from GRB990123 convincingly demonstrated the value of autonomous robotic telescope systems. Pursuing a program of rapid follow-up observations of gamma-ray bursts, the Robotic Optical Transient Search Experiment (
Beatty J.   +19 more
core   +4 more sources

Smart actuation for helicopter rotorblades [PDF]

open access: yes, 2012
Successful rotorcrafts were only achieved when the differences between hovering flight conditions and a stable forward flight were understood. During hovering, the air speed on all helicopter blades is linearly distributed along each blade and is the ...
Akkerman, Remko   +6 more
core   +11 more sources

Current Methods Modeling and Simulating Icing Effects on Aircraft Performance, Stability, Control [PDF]

open access: yes, 2010
Icing alters the shape and surface characteristics of aircraft components, which results in altered aerodynamic forces and moments caused by air flow over those iced components.
Barnhart, Billy P.   +2 more
core   +2 more sources

Electricity powering combustion: hydrogen engines [PDF]

open access: yes, 2012
Hydrogen is ameans to chemically store energy. It can be used to buffer energy in a society increasingly relying on renewable but intermittent energy or as an energy vector for sustainable transportation.
Boyer, Brad   +6 more
core   +1 more source

Cardiac‐Derived ECM Microspheres for Enhanced hiPSC‐CMs Maturation

open access: yesAdvanced Functional Materials, EarlyView.
Cardiac extracellular matrix microspheres derived from decellularized porcine heart provide a biomimetic 3D microenvironment for human induced pluripotent stem cell–derived cardiomyocytes (hiPSC‐CMs). This platform supports short‐ and long‐term culture, enhances structural organization, and promotes electrophysiological and functional maturation of ...
Jiazhu Xu   +9 more
wiley   +1 more source

Ultrasonic ice protection systems [PDF]

open access: yes, 2017
Protection systems against ice on leading edge conventionally use thermal and pneumatic solutions. In case of thermal solutions with piccolo tubes (the most usual technology), the hot air is extracted from engine, which decrease its efficiency. The trend
Budinger, Marc   +2 more
core  

A brief status on condition monitoring and fault diagnosis in wind energy conversion systems [PDF]

open access: yes, 2009
International audienceThere is a constant need for the reduction of operational and maintenance costs of Wind Energy Conversion Systems (WECSs). The most efficient way of reducing these costs would be to continuously monitor the condition of these ...
Al-Ahmar, Elie   +4 more
core   +3 more sources

Atomic‐Level Ionic Displacement Polarization Enhanced Piezocatalytic Hydrogen Evolution in Covalent Organic Frameworks

open access: yesAdvanced Functional Materials, EarlyView.
Two isomorphic COFs were synthesized and compared, including an amphoteric COF (SQ‐TAPT) and a neutral COF (PDA‐TAPT). The ionic bonds in SQ‐TAPT introduce more Born effective charges, thereby enhancing its ionic displacement polarization. Experimental and theoretical calculations demonstrated that SQ‐TAPT exhibited higher polarity and stronger ...
Ge Yan   +12 more
wiley   +1 more source

The PLATO Dome A Site-Testing Observatory : instrumentation and first results [PDF]

open access: yes, 2009
The PLATeau Observatory (PLATO) is an automated self-powered astrophysical observatory that was deployed to Dome A, the highest point on the Antarctic plateau, in 2008 January.
Allen, G.   +36 more
core   +1 more source

Bioprinting Organs—Science or Fiction?—A Review From Students to Students

open access: yesAdvanced Healthcare Materials, EarlyView.
Bioprinting artificial organs has the potential to revolutionize the medical field. This is a comprehensive review of the bioprinting workflow delving into the latest advancements in bioinks, materials and bioprinting techniques, exploring the critical stages of tissue maturation and functionality.
Nicoletta Murenu   +18 more
wiley   +1 more source

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