Results 101 to 110 of about 51,784 (297)

Optimizing Structural Parameters of a Water Distribution Device in Cylindrical High‐Flowrate Mixed Bed Using Multiobjective Genetic Algorithm

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT High‐flowrate mixed bed is the foremost desalination equipment in the condensate polishing system. The water distribution device determining the water distribution uniformity directly affects its operation stability, output water quality, and service life of the resins.
Jing Zhu   +5 more
wiley   +1 more source

Thermal Calculations for Co‐Firing of Hydrogen/Ammonia and Coal in 660‐MW Coal‐Fired Boilers

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT To achieve a clean energy transition under the dual carbon goals, blending hydrogen/ammonia into pulverized coal boilers represents a key technological pathway. Different hydrogen/ammonia co‐firing ratios (5%–50%) are investigated for their impact on the thermodynamic characteristics of 660‐MW supercritical boiler at 100% and 20% boiler ...
Yaodong Da   +7 more
wiley   +1 more source

Performance Test of Ice Storage Refrigeration System in Coal Mine Rescue Capsule

open access: yesZhileng xuebao, 2013
An Ice storage refrigeration system is proposed for application in coal mine rescue capsule. Performance test of the refrigeration system is developed in the reality survival condition.
Sheng Wei   +5 more
doaj  

POSSIBILITIES OF THE USE OF WORKING SELF-CONTAINED BREATHING APPARATUSES FILTRATING CARBON MONOXIDE IN THE PRACTICE OF MINE RESCUE SERVICES

open access: yesGeoScience Engineering, 2017
In the current practice of the Mining Rescue Service of the Czech Republic, since 2005, the insulated overpressure regenerative breathing apparatuses with a closed circuit and supply of medicinal oxygen are used as the backbone working breathing ...
Pavelek Zdeněk
doaj   +1 more source

Advanced Separation Technologies for Light Olefin and Alkane (C2‐C4): Recent Advances in Extraction, Adsorption, and Membrane Separation

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT With the rapid development of the petrochemical industry, efficient separation technology for olefins and alkanes with the same number of carbon atoms has become an important research topic to enhance the efficiency of petroleum resource utilization and optimize product quality.
Shasha Zhao, Kang Zhao, Zhen Liu
wiley   +1 more source

A Novel Green Method for Producing Medical‐Grade Chitosan From Loligo plei Squid Pens

open access: yesJournal of Applied Polymer Science, EarlyView.
This work demonstrates a sustainable and simplified process for the production of medical‐grade chitosan from the feathers of the squid Loligo plei, employing mild chemical treatments to preserve the integrity of the polymer while achieving high purity and performance.
Talita Martins   +7 more
wiley   +1 more source

Development of enclosed life support system for underground rescue employing a photocatalytic metal oxide thin film to generate oxygen from water and reduce carbon dioxide [PDF]

open access: yes, 2006
Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2006.Includes bibliographical references (p. 35-36).Despite major improvements in technology and safety regulations, coal mining continues to be a hazardous industry ...
Trivedi, Meghna S
core  

Research on path smoothing algorithm of coal mine rescue robot

open access: yesGong-kuang zidonghua, 2019
In view of problems that path planning of the coal mine rescue robot planned by A* algorithm has many path turning points and the path is not smooth enough, a path smoothing algorithm of coal mine rescue robot based on improved A* algorithm was proposed.
TAO Dejun   +4 more
openaire   +1 more source

Montana Bureau of Mines and Geology [PDF]

open access: yes
The Montana Bureau of Mines and Geology is the principal source of earth science information for the citizens of Montana. The bureau provides extensive advisory, technical, and informational services on geologic, mineral, energy, and water resources in ...

core   +2 more sources

Revisiting a long‐overlooked skull: Implications for the distribution of Dinodontosaurus brevirostris (Kannemeyeriiformes) in the Brazilian Triassic

open access: yesThe Anatomical Record, EarlyView.
Abstract Dicynodonts (Anomodontia: Dicynodontia) were one of the main groups of terrestrial tetrapods in Permian and Triassic faunas. In Brazil, the genus Dinodontosaurus is one of the most common tetrapod taxon in the Triassic Santa Maria Supersequence. This genus has a complex taxonomic history and is represented in the Triassic of both Argentina and
Julia Lara Rodrigues de Souza   +5 more
wiley   +1 more source

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