Results 51 to 60 of about 1,010,641 (341)
IEEE Access, 2021 Long-distance wireless energy transmission is realized by photoelectric conversion through lasers and photovoltaic cells. However, existing devices have low transmission power and low transmission efficiency.
Tiefeng He +5 more
doaj +1 more source
FEBS Letters, EarlyView.We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee +3 more
wiley +1 more source
Ballistic Energy Conversion with 78% Efficiency and System Integration
Cell Reports Physical Science, 2020 Summary: Electrokinetic energy conversion by streaming current was proposed for energy harvesting for >50 years; however, it proved to be of limited use due to low efficiencies. The recent emergence of nanomaterials and related technologies significantly
Daxiang Xu +4 more
doaj +1 more source
The role of engineering in organic farming – case energy crops [PDF]
, 2007 Energy self-reliance and a closed nutrient cycle are basic principles of organic farming ever since. Engineering sciences methods in energy accounting may support efforts to introduce these principles into praxis.
Schäfer, Winfried
core
Transport and Spectroscopic Studies of the Effects of Fullerene Structure on the Efficiency and Lifetime of Polythiophene-based Solar Cells [PDF]
, 2011 Time-dependent measurements of both power conversion efficiency and ultraviolet-visible absorption spectroscopy have been observed for solar cell blends containing the polymer poly(3-hexylthiophene-2,5-diyl) (P3HT) with two different functionalized C60 ...
Adalsteinsson, Thorsteinn +8 more
core +3 more sources
Structural biology of ferritin nanocages
FEBS Letters, EarlyView.Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley +1 more source
Optimization of an axial-flux permanent-magnet generator for a small wind energy application [PDF]
, 2011 Axial-flux permanent-magnet synchronous machines have a high torque output at low speeds and are therefore very suitable for direct drive wind energy applications.
Dupré, Luc +2 more
core +1 more source
Energy conversion in isothermal nonlinear irreversible processes - struggling for higher efficiency
, 2017 First we discuss some early work of Ulrike Feudel on structure formation in nonlinear reactions including ions and the efficiency of the conversion of chemical into electrical energy.
Ebeling, W., Feistel, R.
core +1 more source
Exceeding the solar cell Shockley-Queisser limit via thermal up-conversion of low-energy photons [PDF]
, 2013 Maximum efficiency of ideal single-junction photovoltaic (PV) cells is limited to 33% (for one sun illumination) by intrinsic losses such as band edge thermalization, radiative recombination, and inability to absorb below-bandgap photons.
Boriskina, Svetlana V., Chen, Gang
core +2 more sources
Efficiency of Negative-Illumination Photovoltaic Energy Conversion
ACS Applied Energy MaterialsInfrared diodes generate electricity from thermal radiation emitted from themselves. The negative process of photovoltaic effect has been expected for application to energy harvesting systems converting from terrestrial radiation. However, its energy conversion efficiency has been known to be very low.
Toru Matsuura +2 more
openaire +2 more sources