Results 31 to 40 of about 2,032,129 (296)

CFD simulation of partial channel blockage on plate-type fuel of TRIGA-2000 conversion reactor core

open access: yesActa Polytechnica, 2022
A nuclear reactor cooling system that has been operating for a long time can carry some debris into a fuel coolant channel, which can result in a blockage. An in-depth two-dimensional simulation of partial channel blockage can be carried out using FLUENT
Sukmanto Dibyo   +4 more
doaj   +1 more source

A dynamic PEM-fuel cell stack model for system simulation

open access: yes, 2005
A dynamic, mathematical model of a proton-exchange-membrane fuel cell stack is presented. The model is time-dependent, one-dimensional along the channel and non-isothermal.
Schumacher, Jürgen   +3 more
core   +2 more sources

CONSIDERATIONS FOR THE DEVELOPMENT OF A DEVICE FOR THE DECOMMISSIONING OF THE HORIZONTAL FUEL CHANNELS IN THE CANDU 6 NUCLEAR REACTOR PART 5 - FUEL CHANEL DECOMMISSIONING [PDF]

open access: yesFiabilitate şi Durabilitate, 2014
As many nuclear power plants are reaching their end of lifecycle, the decommissioning of these installations has become one of the 21st century’s great challenges. Each project may be managed differently, depending on the country, development policies,
Gabi ROSCA FARTAT   +2 more
doaj  

Preliminary assessment of hazelnut shell biomass as a raw material for pellet production

open access: yes, 2023
We evaluated the use of hazelnut shell (HS) for pellet production. The investigation of chemical properties, such as the calorific value, low ash, nitrogen, sulfur and chlorine content as well as low heavy metal contents, reveals that the proposed ...
Muñoz, Robinson   +10 more
core   +1 more source

PARTICULARITIES REGARDING THE OPERATING PROCESS OF THE CUTTING AND EXTRACTION DEVICE IN THE CANDU HORIZONTAL FUEL CHANNELS PRESSURE TUBE DECOMMISSIONING PART I: MOVEMENT AND FIXING DEVICE INSIDE THE PRESSURE TUBE [PDF]

open access: yesFiabilitate şi Durabilitate, 2016
This paper presents some details of operation process for a Cutting and Extraction Device (CED) in order to achieve the decommissioning of the horizontal fuel channels pressure tube in the CANDU 6 nuclear reactor.
Constantin POPESCU   +5 more
doaj  

Impact on Fuel Transport Efficiency in Anode of Planar Solid Oxide Fuel Cells

open access: yesInternational Journal of Electrochemical Science, 2013
This work establishes a mathematical model of fuel transport efficiency in anode that permeates from the surface to the triple phase boundaries through the porous electrode of solid oxide fuel cells.
Fuxing Miao
doaj   +1 more source

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

open access: yesFEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source

Mathematical model of fuel sloshing in the measuring channel of the fuel expenditure control system

open access: yesВестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2016
The problem of fuel sloshing in the measuring cylindrical channel of the system controlling fuel expenditure in the tank is considered in the paper.
Yu. A. Kryukov
doaj   +1 more source

Artificial molecular machines and motors—Design and control of nanoscale motion

open access: yesFEBS Letters, EarlyView.
Molecules are constantly moving because of thermal fluctuations, but random motion alone cannot be exploited to perform directional tasks. Artificial molecular machines use chemical, electrical, or light energy to bias this motion. Molecular shuttles, rotary motors, and supramolecular pumps illustrate how nanoscale movement can be controlled and ...
Leonardo Andreoni, Alberto Credi
wiley   +1 more source

CONSIDERATIONS FOR THE DEVELOPMENT OF A DEVICE FOR THE DECOMMISSIONING OF THE HORIZONTAL FUEL CHANNELS IN THECANDU 6 NUCLEAR REACTOR. PART 11 - PRESENTATION OF THE CUTTING AND EXTRACTING DEVICE OPERATING [PDF]

open access: yesFiabilitate şi Durabilitate, 2015
This paper presents a constructive solution proposed by the authors in order to achieve of a cutting and extracting device for the decommissioning of the horizontal fuel channels in the CANDU 6 nuclear reactor.
Constantin D. STANESCU   +2 more
doaj  

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