Results 1 to 10 of about 101,236 (282)

DnaA and ORC: more than DNA replication initiators [PDF]

open access: bronzeTrends in Cell Biology, 2011
Mutations in DNA replication initiator genes in both prokaryotes and eukaryotes lead to a pleiotropic array of phenotypes, including defects in chromosome segregation, cytokinesis, cell cycle regulation and gene expression. For years, it was not clear whether these diverse effects were indirect consequences of perturbed DNA replication, or whether they
Scholefield G, Veening JW, Murray H
openaire   +5 more sources

Evaluation of Using Gas Turbine to Increase Efficiency of the Organic Rankine Cycle (ORC) [PDF]

open access: goldEnergies, 2020
Power conversion systems based on the Organic Rankine Cycle (ORC) have been identified as a potential technology especially in converting low-grade renewable sources or waste heat. However, it is necessary to improve efficiency of ORC systems. This paper
Dominika Matuszewska, Piotr Olczak
doaj   +2 more sources

Performance assessment of a power/refrigeration cogeneration system driven by the waste heat of a solid oxide fuel cell [PDF]

open access: yesHydrogen, Fuel Cell & Energy Storage, 2023
In the present study, combination of a solid oxide fuel cell with two CCP subsystem to generate power and refrigeration is investigated. The proposed system consists of two combined ORC-VCR system which their input energy is supplied by the waste heat of
Armin Emamifar
doaj   +1 more source

CFD Flow Analysis of the Influence of Rotor Seals in a Cantilever Microturbine [PDF]

open access: yesMATEC Web of Conferences, 2022
The article describes the results from the research and development of a cantilever microturbine designed for ORC power plants. The main objective of the paper was to compare different types of rotor seals and their effect on the turbine efficiency and ...
Syka Tomáš   +2 more
doaj   +1 more source

Mathematical modeling of a binary ORC operated with solar collectors. Case study—Ecuador

open access: yesAIMS Energy, 2023
The present study is significant because it can contribute to developing sustainable energy strategies and expanding knowledge about renewable energies in Ecuador, specifically by modeling two modules: the thermal module (parabolic solar collectors and ...
Daniel Chuquin-Vasco   +5 more
doaj   +1 more source

Expanded range of eight orchid bee species (Hymenoptera, Apidae, Euglossini) in Costa Rica [PDF]

open access: yesBiodiversity Data Journal, 2022
The Monteverde region of Costa Rica is a hotspot of endemism and biodiversity. The region is, however, disturbed by human activities such as agriculture and urbanisation.
Elise McDonald   +3 more
doaj   +3 more sources

Can Kant tell us what to do? Intentions, dilemmas, and the long journey towards moral perfection

open access: yesRevista de Estudios Kantianos, 2023
The “received view” on Kantian ethics holds that perfect duties enjoy absolute priority over imperfect duties. More recently, several Kantian scholars have reassessed this situation, arguing that imperfect duties may remain binding even if they imply ...
Álvaro R. G. Barredo
doaj   +1 more source

Experimental investigation of a cascaded organic Rankine cycle plant for the utilization of waste heat at high and low temperature levels [PDF]

open access: yes, 2020
A power plant with two cascaded organic Rankine cycles (CORC) to exploit waste heat from a 800 kWe combined heat and power plant, fueled by biogas, is designed and tested.
Heim, André   +4 more
core   +1 more source

A Novel Exergy Indicator for Maximizing Energy Utilization in Low-Temperature ORC

open access: yesEnergies, 2020
In the last decade, particular attention has been paid to the organic Rankine cycle (ORC) power plant, a technology that implements a classical steam Rankine cycle using low-boiling fluid of organic origin.
Marcin Jankowski   +1 more
doaj   +1 more source

Comparison of waste heat recovery from a Proton Exchange Membrane fuel cell by gas turbine or Organic Rankin Cycle: a display of 3E analysis [PDF]

open access: yesHydrogen, Fuel Cell & Energy Storage, 2021
One of the most important methods for efficient hydrogen utilization is the proton exchange membrane fuel cell (PEMFC) because of its low environmental impact and easy maintenance.
Vahid Mohammadzadeh   +3 more
doaj   +1 more source

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