Results 41 to 50 of about 438,725 (308)
Pico-Power Production from a Squirrel-Cage Darrieus HAMCT [PDF]
, 2017 The United Nations has recognized the need for renewable energy sources through the Sustainable Development Goals. Pico-hydrokinetic energy has the potential to be portable and far-reaching.
Harger, James +2 more
core +1 more source
Porous Iridium Oxide Inverse Opal Catalysts Enable Efficient PEM Water Electrolysis
Advanced Materials, EarlyView.Porous iridium‐based inverse opal (IrOx‐IO) structures are introduced as high‐performance, unsupported PEM‐WE anode catalysts. Their electrochemical behavior is analyzed through porosity/surface area tuning, voltage breakdown, and circuit modeling.
Sebastian Möhle +4 more
wiley +1 more source
Stirring up lessons for food activists
Journal of Agriculture, Food Systems, and Community Development, 2021 First paragraph: The book Stirrings examines the anti-hunger efforts of the food movement in the latter part of the 20th century for lessons in their successes and failures, as well as relevance to the modern food movement in America.
Robert Kluson
doaj +1 more source
Effect of Host Anisotropy on Phosphorescent Emitter Orientation and Light Outcoupling in OLEDs
Advanced Optical Materials, EarlyView.The orientation of the emissive transition dipole moment of a cage‐type Iridium complex can be tuned by the anisotropic alignment of the cohost material, which is expressed as the S$S$ parameter of the film. Thus, the external quantum efficiency of OLEDs can be further enhanced to reach values above 30%.
Bình‐Minh Nguyễn +5 more
wiley +1 more source
Spot sampling of nutrient concentrations in the Puarenga catchment, Rotorua [PDF]
, 2011 The Centre for Biodiversity and Ecology Research was approached by Tūhourangi Tribal Authority for assistance with measuring water quality in streams in the Puarenga Stream catchment. Water sampling was subsequently undertaken on 18 July 2011 and samples
Abell, Jonathan Michael +1 more
core +1 more source
Collision‐Resilient Winged Drones Enabled by Tensegrity Structures
Advanced Robotics Research, EarlyView.Based on structures of birds such as the woodpeck, this article presents the collision‐resilient aerial robot, SWIFT. SWIFT leverages tensegrity structures in the fuselage and wings which allow it to undergo large deformations in a crash, without sustaining damage. Experiments show that SWIFT can reduce impact forces by 70% over conventional structures.
Omar Aloui +5 more
wiley +1 more source
A land systems approach: Bay of Plenty
Landscape Review, 1999 Land systems have been an important scientific concept in new Zealand landscape studies for many years (Swaffield and O'Connor 1986), but have only recently been incorporated fully into landscape assessments by landscape architects.
Di Lucas, Simon Swaffield
doaj
Bayesian Magic in Asteroseismology
EPJ Web of Conferences, 2015 Only a few years ago asteroseismic observations were so rare that scientists had plenty of time to work on individual data sets. They could tune their algorithms in any possible way to squeeze out the last bit of information. Nowadays this is impossible.
Kallinger T.
doaj +1 more source
TreeSpider: In‐Canopy Exploration With Tether‐Based Aerial Modular Arms
Advanced Robotics Research, EarlyView.A tethered drone with perching arms and a 360° ring enables unprecedented maneuverability within dense forest canopies. By dynamically adjusting tether length and decoupling pitch from the frame, it navigates between branches, senses multiple trees, and interacts physically with foliage.
Luca Romanello +7 more
wiley +1 more source
Jungquartär und End-Mesolithikum in der Provinz Kerman (Iran) [PDF]
Eiszeitalter und Gegenwart, 1962 The main masses of detritus and silts („See-Löß"), deposited in water and filling the vast plateau-valleys of Kerman-area, seem to have been formed during semi-arid conditions till in older Holocene times.
R. Huckriede
doaj +1 more source