Results 11 to 20 of about 1,067,847 (299)

Probing green algal hydrogen production [PDF]

open access: yesPhilosophical Transactions of the Royal Society of London. Series B: Biological Sciences, 2002
The recently developed two–stage photosynthesis and H 2 –production protocol with green algae is further investigated in this work. The method employs S deprivation as a tool for the metabolic regulation of photosynthesis. In the presence of S, green algae perform normal photosynthesis, carbohydrate accumulation and
Liping, Zhang, Anastasios, Melis
openaire   +2 more sources

An alternate proton acceptor for excited-state proton transfer in green fluorescent protein: Rewiring GFP [PDF]

open access: yes, 2008
The neutral form of the chromophore in wild-type green fluorescent protein (wtGFP) undergoes excited-state proton transfer (ESPT) upon excitation, resulting in characteristic green (508 nm) fluorescence.
Jaye, Andrew A.   +5 more
core   +1 more source

Green Hydrogen in the UK: Progress and Prospects

open access: yesClean Technologies, 2022
Green hydrogen has been known in the UK since Robert Boyle described flammable air in 1671. This paper describes how green hydrogen has become a new priority for the UK in 2021, beginning to replace fossil hydrogen production exceeding 1 Mte in 2021 when
Kevin Kendall
doaj   +1 more source

A Comprehensive Spectroscopic Analysis of DB White Dwarfs [PDF]

open access: yes, 2011
We present a detailed analysis of 108 helium-line (DB) white dwarfs based on model atmosphere fits to high signal-to-noise optical spectroscopy. We derive a mean mass of 0.67 Mo for our sample, with a dispersion of only 0.09 Mo. White dwarfs also showing
A. Beauchamp   +51 more
core   +1 more source

Towards green hydrogen? – A comparison of German and African visions and expectations in the context of the H2Atlas-Africa project

open access: yesEnergy Strategy Reviews, 2023
Green hydrogen promises to be critical in achieving a sustainable and renewable energy transition. As green hydrogen is produced with renewables, green hydrogen could become an energy storage medium of the future and even substitute the current ...
S. Brauner   +4 more
doaj   +1 more source

Analysis and Development Outlook on the Typical Modes of Green Hydrogen Projects

open access: yes南方能源建设, 2023
[Introduction] The increasingly high proportion of renewable power sources raises higher requirements for the safe and stable operation of the power system and the reliable supply of electricity.
Siyu ZHANG   +4 more
doaj   +1 more source

Analysis of Coupling Effect Between Green Hydrogen Trading Market and Electricity Market Under Carbon Trading Policy

open access: yes南方能源建设, 2023
[Introduction] To achieve the "carbon peak and neutrality" goals, the ways for enterprise energy conservation and emission reduction need to fully explored, and the green and low-carbon policy tools should be fully exploited.
Haoran WANG   +3 more
doaj   +1 more source

The INGRID project: Development of Solutions for Sustainable and Highly Interconnected Grids [PDF]

open access: yes, 2015
One of the current main challenges in green-power storage and smart grids is the lack of effective solutions for accommodating the unbalance between renewable energy sources - offering intermittent electricity supply - and a variable electricity demand ...
A Zaluska   +4 more
core   +1 more source

An overview of the socio-economic impacts of the green hydrogen value chain in Southern Africa

open access: yesJournal of Energy in Southern Africa, 2022
The green hydrogen economy offers synthetic green energy with significant impacts and is environmentally friendly compared to current fossil-based fuels.
Simeon Shiweda Hamukoshi   +3 more
doaj   +1 more source

Measurement of 21 cm brightness fluctuations at z ~ 0.8 in cross-correlation

open access: yes, 2013
In this letter, 21 cm intensity maps acquired at the Green Bank Telescope are cross-correlated with large-scale structure traced by galaxies in the WiggleZ Dark Energy Survey. The data span the redshift range 0.6 < z < 1 over two fields totaling ~41 deg.
Banavar, N.   +14 more
core   +1 more source

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