Results 51 to 60 of about 14,095,782 (306)

Spudcan Reinstallation Close to Natural Footprints Considering Strength Reduction: Insights from Single-Factor and Orthogonal Experiments

open access: yesApplied Sciences
In offshore jack-up operations, it is common to reinstall spudcans close to existing footprints, which could result in asymmetric soil distribution and potential instability risks. This study investigates the mechanical behavior and stability of spudcans
Xin Zou   +6 more
doaj   +1 more source

A Multi-Constrained Optimization Method for THz Backward Wave Oscillators

open access: yesApplied Sciences, 2022
The current design period for various backward wave oscillators (BWOs) is still at least several months. How to find the best structure parameters with an efficient and stable optimization method is a problem facing researchers in both scientific ...
Rong Bao   +3 more
doaj   +1 more source

On the orthogonal designs of order 24

open access: yesDiscrete Applied Mathematics, 2000
Using a new method, all 18 remaining full orthogonal designs of order 24 in four variables (unsolved for more than 20 years) are constructed. The last three remaining orthogonal designs of order 24 in three variables are obtained as a special case of three of these designs.
Wolf H. Holzmann, Hadi Kharaghani
openaire   +2 more sources

Orthogonal Designs and a Cubic Binary Function [PDF]

open access: yesIEEE Transactions on Information Theory, 2013
Orthogonal designs are fundamental mathematical notions used in the construction of space time block codes for wireless transmissions. Designs have two important parameters, the rate and the decoding delay; the main problem of the theory is to construct designs maximizing the rate and minimizing the decoding delay.
Morier-Genoud, Sophie   +1 more
openaire   +4 more sources

Study on the optimization of ultrasonic-assisted extraction technology and antibacterial activity of total flavonoids from Bidens Pilosa L

open access: yesSiliao yanjiu, 2021
The article aimed to optimize the ultrasonic-assisted extraction process of total flavonoids from Bidens bipinnata L.and to study its bacteriostasis.
Xue-yan SHI, Li-hong LI, Shu-ya XU
doaj  

Orthogonal Optimal Design of Multiple Parameters of a Magnetically Controlled Capsule Robot

open access: yesMicromachines, 2021
Magnetically controlled capsule robots are predominantly used in the diagnosis and treatment of the human gastrointestinal tract. In this study, based on the permanent magnet method, magnetic driving and fluid measurement systems for in-pipe capsule ...
Puhua Tang   +4 more
doaj   +1 more source

Study on preparation of fast curing novolaks for the shell process [PDF]

open access: yesChina Foundry, 2004
To save energy and raise molding and coremaking productivity, the synthetic procedure of novolaks for the shell process was investigated. The study indicated that it was difficult to obtain fast curing novolaks under strongly acidic conditions alone. A
Rongqi LI, Yuancai LI, Haoran ZHANG
doaj  

Cold Pressing and Hot Curing Process for Assembly of Hexagonal Pre-shaped Bamboo Culm Sections

open access: yesBioResources, 2023
Bamboo is widely used in the construction industry due to its excellent mechanical properties, short production cycle, and environmental concerns.
Liang Ji   +7 more
doaj  

Optimization of Conditions for Production of Calcium Citrate from Egg Shells

open access: yesProceedings, 2020
Eggshells contain high amounts of CaCO3 (94–97%), some proteins (3–4%). [...]
Camelia Rovinaru   +2 more
doaj   +1 more source

A Mathematical Model for Predicting the Sauter Mean Diameter of Liquid-Medium Ultrasonic Atomizing Nozzle Based on Orthogonal Design

open access: yesApplied Sciences, 2021
As a new type of atomizing nozzle with superior atomizing performance, the liquid-medium ultrasonic atomization nozzle has been widely applied in the field of spray dust reduction.
Shilin Li   +5 more
doaj   +1 more source

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