Results 1 to 10 of about 1,161,102 (152)

Real-Time Minimization of Mechanical Specific Energy with Multivariable Extremum Seeking [PDF]

open access: yesEnergies, 2021
Drilling more efficiently and with less non-productive time (NPT) is one of the key enablers to reduce field development costs. In this work, we investigate the application of a data-driven optimization method called extremum seeking (ES) to achieve more
Magnus Nystad   +2 more
doaj   +3 more sources

A New Mechanical Specific Energy Model for Composite Impact Drilling

open access: yesApplied Sciences, 2022
Composite impact drilling technology is one of the important techniques to increase drilling speeds in deep hard formations. In order to evaluate the efficiency of drilling with a composite impactor in real time and effectively, and to further improve ...
Jianyu Qin   +6 more
doaj   +2 more sources

A Survey of Application of Mechanical Specific Energy in Petroleum and Space Drilling

open access: yesEnergies, 2022
The optimization of drilling operations is an ongoing necessity since the major proportion of the terrestrial hydrocarbon reservoirs has been exhausted. Furthermore, there is a growing tendency among the space exploration agencies to drill the subsurface
Mitra Khalilidermani, Dariusz Knez
doaj   +2 more sources

Development of Monitoring and Forecasting Technology Energy Efficiency of Well Drilling Using Mechanical Specific Energy

open access: yesEnergies, 2022
This article is devoted to the development of technology for improving the efficiency of directional well drilling by predicting and adjusting the system of static and dynamic components of the actual weight on the bit, based on the real-time data ...
Andrey Kunshin   +3 more
doaj   +2 more sources

Mechanical vapor compressio--Membrane distillation hybrids for reduced specific energy consumption [PDF]

open access: yesDesalination and Water Treatment, 2016
The energy efficiency of membrane distillation (MD) systems is low when compared to other thermal desalination systems. This leads to high water production costs when conventional fuels such as natural gas are used.
Lienhard, John H   +2 more
core   +5 more sources

Extrusion parameters and physical transformations of an extrudate for fish: Effect of the addition of hydrolyzed protein flour from by-products of Oncorhynchus mykiss

open access: yesFrontiers in Sustainable Food Systems, 2023
IntroductionThe food industries play a fundamental role in feeding for the functions of animal metabolism. Fish feed extrusion cooking includes process-independent factors such as temperature (°C), screw speed (RPM), throughput, feed, and moisture ...
José Luis Hoyos-Concha   +4 more
doaj   +1 more source

Advancing Paper Industry Applications with Extruded Cationic Wheat Starch as an Environmentally Friendly Biopolymer

open access: yesPolysaccharides, 2023
Within the domain of starch modification, the study delved into cationization of wheat starch through a laboratory-scale twin-screw extruder, exploring various processing conditions.
Ahmed Tara
doaj   +1 more source

Towards Large Particle Size in Compound Feed: Using Expander Conditioning Prior to Pelleting Improves Pellet Quality and Growth Performance of Broilers

open access: yesAnimals, 2022
During the processing of compound feed for broilers, several changes occur that affect the physical and probably the nutritional properties of pellets, influencing animal performance. The effects of mill type, particle size (PS) and expander conditioning
Marco Antônio Ebbing   +5 more
doaj   +1 more source

Binding energy and specificity in the catalytic mechanism of yeast aldose reductases [PDF]

open access: yesBiochemical Journal, 1999
Derivatives of D-xylose and D-glucose, in which the hydroxy groups at C-5, and C-5 and C-6 were replaced by fluorine, hydrogen and azide, were synthesized and used as substrates of the NAD(P)H-dependent aldehyde reduction catalysed by aldose reductases isolated from the yeasts Candida tenuis, C. intermedia and Cryptococcus flavus.
B, Nidetzky   +3 more
openaire   +2 more sources

Influence of carbon black trimodal mixture on LDPE films properties: Part2 – SME

open access: yesPolímeros, 2022
In this work, the influence of Specific Mechanical Energy (SME) to disperse a trimodal distribution of carbon black (CB) by extrusion was studied to evaluating the effect on LDPE films properties (colorimetric and rheological).
Juliano Martins Barbosa   +2 more
doaj   +1 more source

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