Results 191 to 200 of about 3,470,657 (295)

Reusing depleted oil and gas wells for geothermal energy: Feasibility, challenges, and a decision‐making framework for sustainable conversion

open access: yesDeep Underground Science and Engineering, EarlyView.
The graphical abstract presents a structured decision‐support framework for assessing the feasibility of converting depleted oil and gas wells into geothermal energy systems. The left panel illustrates a comprehensive, multi‐stage decision‐making framework progressing from prefeasibility screening and technical–economic analysis to policy alignment ...
Karolina Bieryt   +3 more
wiley   +1 more source

Low‐Temperature in Situ Upgrading of Ultra‐Deep Heavy Oil Using Ni–Ce/MOF–OTf Superacid Catalysts to Enhance Energy Utilization and Sustainability

open access: yesEcoEnergy, EarlyView.
A triflate‐functionalized Ni–Ce/MOF–OTf superacid enables low‐temperature (∼140°C) in situ upgrading of ultra‐deep heavy oil. It reduces viscosity by 92.11% in 12 h, maintains activity over cycles, and delivers 90.25% recovery with a lower carbon footprint by selective bond cleavage. ABSTRACT Ultra‐deep heavy oil is an important unconventional resource,
Li Wang   +5 more
wiley   +1 more source

Household food practices and implications for food security and child feeding in Timor-Leste. [PDF]

open access: yesFront Public Health
Sayeed MA   +14 more
europepmc   +1 more source

A Multi‐Software Approach to Assessing Photovoltaics Integration in Modern Enovoltaic Systems

open access: yesEnergy Science &Engineering, EarlyView.
Robust eno‐PV design methodology applied to a real case study Multi‐software 3D model developed to optimize PV panels‐vineyard configuration Energy yield nearly independent of tracker height, but reduced by wider row spacing Grape productivity improving with height and decreasing with spacing Energy generation and grape yield balanced by tuning PV ...
Erika Stracqualursi   +3 more
wiley   +1 more source

The Critical Role of Economies of Scale: A Techno‐Economic Assessment of Small‐ Versus Large‐Scale Biogas Upgrading in Rural Tanzania

open access: yesEnergy Science &Engineering, EarlyView.
Small‐scale biogas upgrading can improve methane quality but remains financially unattractive to individual rural households. Community‐scale implementation substantially lowers energy costs, demonstrating that economies of scale are critical to making purified biogas a viable clean‐cooking option in Tanzania.
Emmanuel Nsekela   +5 more
wiley   +1 more source

Shape of Yield Curves Under Instrument‐Based Parallel Shifts

open access: yesJournal of Futures Markets, EarlyView.
ABSTRACT This paper studies the shape of zero and par yield curves through the carry and convexity of zero‐bond and par–swap butterflies under instrument‐based parallel shifts: the component instruments are held fixed, and each instrument's own quote receives the same additive shock.
Jian Sun
wiley   +1 more source

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