Results 41 to 50 of about 395,556 (265)

Effect of endplates and aspect ratio on performance of a Savonius wind turbine [PDF]

E3S Web of Conferences
Wind energy plays a vital role in the current move towards sustainable and clean energy sources, thereby reducing greenhouse gas emissions. Research into turbine geometry has revealed significant effects on performance and efficiency.
Tayari Souad, Toumi Oumayma, Ennetta Ridha   +2 more
doaj   +1 more source

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

FEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe, Tanmay Kumar Mohanty, Rashna Bhandari, Dorothea Fiedler   +3 more
wiley   +1 more source

Experimental Investigation of the Effect of Palm Oil Biodiesel Blends on Emissions and Performance of a Diesel Electric Generator [PDF]

E3S Web of Conferences
This experimental investigation assesses the operational performance and exhaust emissions of a diesel generator fueled by biodiesel derived from palm oil at three different blend ratios: B0 (pure diesel), B25 (25% biodiesel blend), and B50 (50 ...
Hamdi Fakher, Yahya Ilham, Ennetta Ridha
doaj   +1 more source

NULL ENERGY CONDITION AND DARK ENERGY MODELS [PDF]

Modern Physics Letters A, 2008
Null Energy Condition (NEC) requires the equation of state (EoS) of the universe wu satisfy wu ≥ -1, which implies, for instance in a universe with matter and dark energy dominating wu = w m Ω m + w de Ω de = w de Ω de ≥ -1. In this paper we study constraints on the dark energy models from the requirement of the NEC.
Qiu, Taotao, Cai, Yi-Fu, Zhang, Xin-Min
openaire   +2 more sources

Organ‐specific redox imbalances in spinal muscular atrophy mice are partially rescued by SMN antisense oligonucleotides

FEBS Letters, EarlyView.
We identified a systemic, progressive loss of protein S‐glutathionylation—detected by nonreducing western blotting—alongside dysregulation of glutathione‐cycle enzymes in both neuronal and peripheral tissues of Taiwanese SMA mice. These alterations were partially rescued by SMN antisense oligonucleotide therapy, revealing persistent redox imbalance as ...
Sofia Vrettou, Brunhilde Wirth
wiley   +1 more source

Experimental study of temperature effects on the photovoltaic solar panels performances in Algerian desert

International Journal of Energetica, 2022
Photovoltaic panels are operated in the Algerian desert areas under high temperatures, especially, in the summer, when the temperature may be reached 70°C on the panel's surface.
Lamine Medekhel, Kamel Srairi, Chouaib Labiod   +2 more
doaj  

Techno-economic feasibility analysis of an extreme heat flux micro-cooler

iScience, 2023
Summary: An estimated 70% of the electricity in the United States currently passes through power conversion electronics, and this percentage is projected to increase eventually to up to 100%.
Ercan M. Dede, Chi Zhang, Qianying Wu, Neda Seyedhassantehrani, Muhammad Shattique, Souvik Roy, James W. Palko, Sreekant Narumanchi, Bidzina Kekelia, Sougata Hazra, Kenneth E. Goodson, Roman Giglio, Mehdi Asheghi   +12 more
doaj   +1 more source

Energy Models for Graph Clustering

Journal of Graph Algorithms and Applications, 2007
Summary: The cluster structure of many real-world graphs is of great interest, as the clusters may correspond e.g. to communities in social networks or to cohesive modules in software systems. Layouts can naturally represent the cluster structure of graphs by grouping densely connected nodes and separating sparsely connected nodes.
openaire   +1 more source

Transferrin receptor 1‐mediated iron uptake supports thermogenic activation in human cervical‐derived adipocytes

FEBS Letters, EarlyView.
In this study, we found that human cervical‐derived adipocytes maintain intracellular iron level by regulating the expression of iron transport‐related proteins during adrenergic stimulation. Melanotransferrin is predicted to interact with transferrin receptor 1 based on in silico analysis.
Rahaf Alrifai, Mizuki Seo, Gyath Karadsheh, Fachrur Rizal Mahendra, Máté Á Demény, Ferenc Győry, János András Mótyán, László Fésüs, Endre Kristóf, Rini Arianti   +9 more
wiley   +1 more source

Comparative study of materials for proton exchange membrane fuel cells bipolar plates: Electrical performance, durability, and automotive compatibility [PDF]

EPJ Web of Conferences
Bipolar plates are essential components of proton exchange membrane fuel cells because they contribute to current transport, reactant flow distribution, heat dissipation, and overall stack durability.
Elyoubi Meryem, Balli Lahcen, Atifi Adil, Hlimi Mohamed   +3 more
doaj   +1 more source