Results 61 to 70 of about 54,661 (255)
Optimising position control of a solar parabolic trough
South African Journal of Science, 2011 In today's climate of growing energy needs and increasing environmental concerns, alternatives to the use of non-renewable and polluting fossil fuels have to be investigated. One such alternative is solar energy. This study is based on the implementation
Puramanathan Naidoo, Theo van Niekerk
doaj
Constraining Solar Position and Velocity with a nearby Hypervelocity Star [PDF]
The Astrophysical Journal, 2018 Abstract Gravitational three-body interaction among binary stars and the supermassive black hole at the center of the Milky Way occasionally ejects a hypervelocity star (HVS) with a velocity of ∼ 1000
Kohei Hattori +2 more
openaire +2 more sources
Advanced Functional Materials, EarlyView.A low‐Pt catalyst supported on zeolitic imidazolate framework (ZIF‐8)‐derived porous carbon and graphite is integrated with a halide perovskite photovoltaic, yielding cathodes that achieve a high photocurrent density (∼20 mA cm−2) under simulated sunlight and exhibit remarkable stability in acidic media over several days, thereby demonstrating a ...
Na Yeong Oh +12 more
wiley +1 more source
Research on the Solar Shadow Positioning Problem
DEStech Transactions on Computer Science and Engineering, 2016 This paper is mainly about using the length changes of the shadows to determine the location while the length of the object is unknown. Using the solar elevation as a bridge, we build function models between solar declination, geographic latitude of the observing place, hour angle and the length of shadow, and then use Stephenson accelerate iterative ...
Man JIANG, Zi-yong WU, Wen-shuo ZHOU
openaire +2 more sources
Charge Generation and Recombination Pathways in All‐Polymer Bulk Heterojunction Solar Cells
Advanced Functional Materials, EarlyView.Multimodal spectroscopy and device analysis reveal how field‐dependent charge generation, transport limitations, and non‐geminate recombination govern performance losses in all polymer solar cells. The results identify the key processes controlling charge extraction and recombination, providing insights for the design of more efficient all‐polymer ...
Shahidul Alam +17 more
wiley +1 more source
Advanced Functional Materials, EarlyView.An interface‐defect co‐engineered strategy enables bias‐programmable integration of self‐powered photodetection and low‐power synaptic functionalities within a single‐material amorphous Ga2O3 device. This design achieves reversible switching via voltage modulation, supporting high‐contrast imaging and visual memory, and demonstrates a neuromorphic ...
Wanjun Li +13 more
wiley +1 more source
Bismuth‐Based Photocatalysts for Water Remediation: Design Strategies, Mechanisms, and Challenges
Advanced Functional Materials, EarlyView.This review highlights representative design strategies for bismuth‐based semiconductor photocatalysts in solar‐driven water purification. Emphasis is placed on electronic structure regulation, oxygen‐vacancy engineering, and interfacial coupling to enable efficient full‐spectrum light utilization, improved charge separation, and selective oxidation in
Shan Liu +9 more
wiley +1 more source
Advanced Functional Materials, EarlyView.This work presents a ligand‐pairing strategy that reconstructs lead sulfide quantum dot surfaces for efficient short‐wave infrared optoelectronics. A low‐reactivity thiourea precursor combined with hydrobromic acid enables monodisperse and fully passivated quantum dots.
Dongeon Kim +16 more
wiley +1 more source
Polymer Substrates for Flexible Sensors: Advances and Contributions to Smart Agriculture
Advanced Functional Materials, EarlyView.This review comprehensively summarizes recent advances in polymer‐based flexible sensors for smart agriculture, focusing on polymer substrate design, interface engineering, and applications in soil, plant, animal, aquaculture, and post‐harvest monitoring.
Yihui Li +12 more
wiley +1 more source
Rona Teknik Pertanian, 2019 Abstrak. Metode pengeringan menggunakan surya sebagai sumber energi panas adalah metode pengeringan yang banyak digunakan. Besarnya panas yang dihasilkan tergantung dari jumlah radiasi matahari yang dapat ditangkap oleh kolektor surya.
Feby Nopriandy, Suhendra Suhendra
doaj +1 more source