Results 71 to 80 of about 5,408 (171)

The Mesolithic Hunter–Gatherer Camp Site at Sammakko in Norrbotten, Northernmost Sweden—Archeological Finds and Palaeoenvironmental Reconstruction

open access: yesGeoarchaeology, Volume 40, Issue 1, January/February 2025.
ABSTRACT A small Mesolithic camp site near Sammakko in northernmost Sweden has been identified through its abundance of burnt bone and quartz refuse from stone tool manufacturing/maintenance. Radiocarbon dating places hunter–gatherer activity here around 8900 years ago, 1800 years later than the oldest known settlement in Norrbotten, the Aareavaara ...
Per Möller   +12 more
wiley   +1 more source

Improving the Quality and Value‐Added Potential of Crude Pangasius Oil Extracted From Belly Byproducts via Rendering Methods

open access: yesScientifica, Volume 2025, Issue 1, 2025.
The high demand for Pangasius fillets in Indonesia has resulted in substantial byproduct waste, contributing to environmental concerns. To overcome this problem, it is necessary to utilize waste to create economically viable products, such as Pangasius fish byproduct oil.
Nami Lestari   +15 more
wiley   +1 more source

Advances in Catalytic Hydrogenation of Liquid Organic Hydrogen Carriers (LOHCs) Using High‐Purity and Low‐Purity Hydrogen

open access: yesChemCatChem, Volume 16, Issue 24, December 20, 2024.
This review examines liquid organic hydrogen carriers (LOHCs) as a solution for global hydrogen logistics. The LOHC process involves hydrogenation for storage and dehydrogenation for reconversion. Various LOHC materials and catalytic hydrogenation processes are discussed, focusing on high‐purity and low‐purity hydrogen feedstocks.
Safira Ramadhani   +9 more
wiley   +1 more source

International Biological Flora: Trapa natans†

open access: yesJournal of Ecology, Volume 112, Issue 10, Page 2386-2420, October 2024.
The water caltrop (Trapa natans L.) was once widely distributed in its native range, but is in some part (i.e. Europe) nowadays very rare, highly threatened and of conservation concern for still unknown reasons. It has been introduced beyond its native range (e.g.
Natalie Palm   +2 more
wiley   +1 more source

Spartan Daily, March 30, 1965 [PDF]

open access: yes, 1965
Volume 52, Issue 97https://scholarworks.sjsu.edu/spartandaily/4712/thumbnail ...
San Jose State University, School of Journalism and Mass Communications
core   +5 more sources

Performance Analysis of a Renewable‐Powered Multi‐Gas Floating Storage and Regasification Facility for Ammonia Vessels With Reconversion to Hydrogen

open access: yesEnergy Storage, Volume 6, Issue 6, September 2024.
Illustrative diagram of the renewable‐powered multi‐gas FSRU during ammonia loading/unloading process. ABSTRACT Natural gas and renewable energy carriers play critical roles in the energy supply chain due to rising energy consumption demands and a significant shift toward cleaner energy.
Dindha Andriani   +2 more
wiley   +1 more source

A spatial analysis of the economic returns to land‐use change from agriculture to renewable energy production: Evidence from Ireland

open access: yesGCB Bioenergy, Volume 16, Issue 9, September 2024.
We examine the spatial aspect of the production of renewable energy feedstocks in Ireland. Two feedstocks are looked at—grass silage and short‐rotation coppice (SRC) willow. Spatial microsimulation analysis is utilised to assess the spatial suitability for alternative land uses, simulating land‐use change to compare economic returns with the current ...
Cathal Geoghegan, Cathal O'Donoghue
wiley   +1 more source

Process Design and Optimization of LNG Subcooling Systems

open access: yes한국해양공학회지
The boil-off gas (BOG) generated during large-scale liquefied natural gas (LNG) transport increases storage-tank pressure and compromises operational safety.
Donghyun Son, Youngsub Lim
doaj   +1 more source

Dynamic simulation of fuel tank aging for LNG‐fueled ship apparatus in an X‐DF Otto cycle engine

open access: yesEnergy Science & Engineering, 2019
The increased density in a liquefied natural gas (LNG) tank caused by boil‐off gas (BOG) is a key factor to consider for LNG‐fueled ships with Otto cycle engines.
Yude Shao, Sangdeuk Yoon, Hokeun Kang
doaj   +1 more source

METHODS AND SYSTEMS FOR COOLING CRYOGENIC FLUID STORED IN A RESERVOIR [PDF]

open access: yes
On a shipping vessel, where methane is used as fuel, the fuel is stored as liquid at cooled condition due to the properties of methane. The tank storing the fuel (methane) must be isolated to ensure that methane stays as a liquid.
Lund, Claus Rarup
core   +1 more source

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