Results 21 to 30 of about 918,557 (149)

Aeroacoustic analysis based on FW–H analogy to predict low-frequency in-plane harmonic noise of a helicopter rotor in hover

open access: yesArchives of Mechanics, 2022
The integral formulation of the Ffowcs-Williams and Hawkings (FW–H) analogy, developed by Farassat (known as Farassat’s formulation 1A), is implemented to study the sound generation and propagation of rotating slender bodies.
T. Suresh, O. Szulc, P. Flaszynski
doaj   +1 more source

Screening-Limited Response of NanoBiosensors [PDF]

open access: yes, 2007
Despite tremendous potential of highly sensitive electronic detection of bio-molecules by nanoscale biosensors for genomics and proteomic applications, many aspects of experimentally observed sensor response (S) are unexplained within consistent ...
Alam, Muhammad A., Nair, Pradeep R.
core   +1 more source

Incorporating Virtual Problem-Based Learning in Instrumental Chemistry during the COVID-19 Pandemic

open access: yesCOVID, 2023
The COVID-19 pandemic has presented substantial challenges to higher education, leading to economic loss and disruptions in STEM courses. This study addresses these issues through the successful implementation of a problem-based learning research project
Xiaoping Li   +3 more
doaj   +1 more source

Degradation of basalt fiber–reinforced polymer bars in seawater and sea sand concrete environment

open access: yesAdvances in Mechanical Engineering, 2020
Although numerous experimental and analytical investigations on the environmental effects on basalt fiber–reinforced polymer bars were carried out, degradation of the basalt fiber–reinforced polymer bar in seawater and sea sand concrete environment has ...
Suraksha Sharma, Daxu Zhang, Qi Zhao
doaj   +1 more source

General analytical solution expressions for analyzing Langmuir-type kinetics of sonochemical degradation of nonvolatile organic contaminants in water

open access: yesUltrasonics Sonochemistry, 2023
Detailed kinetic studies of the ultrasonic decomposition of contaminants in water are scarce. Most of the work has used a pseudo-first order kinetics law, which is unrealistic.
Oualid Hamdaoui
doaj   +1 more source

A Theory for Estuarine Delta Formation with Finite Beach Length under Sediment Supplied from the River

open access: yesJournal of Marine Science and Engineering, 2022
Analytical solutions for a one-line model for shoreline changes are employed to investigate the formation of two wave-dominated river delta coastlines, along with a small-scale laboratory experiment.
Dinh Van Duy   +3 more
doaj   +1 more source

Genetic algorithm based two-mode clustering of metabolomics data [PDF]

open access: yes, 2008
Metabolomics and other omics tools are generally characterized by large data sets with many variables obtained under different environmental conditions.
Berg, R.A., van den   +4 more
core   +9 more sources

The SIMCO containment code applied to modeling hydrogen distribution in containments of nuclear power facilities [PDF]

open access: yesNuclear Energy and Technology, 2018
The article gives a general description of the SIMCO calculation code designed to simulate thermohydraulic and physico-chemical processes in containments of nuclear power facilities.
Vyacheslav I. Dorovskikh   +4 more
doaj   +3 more sources

Dynamical response of the "GGG" rotor to test the Equivalence Principle: theory, simulation and experiment. Part I: the normal modes [PDF]

open access: yes, 2006
Recent theoretical work suggests that violation of the Equivalence Principle might be revealed in a measurement of the fractional differential acceleration $\eta$ between two test bodies -of different composition, falling in the gravitational field of a ...
A. M. Nobili   +9 more
core   +2 more sources

STUDY OF NEGATIVE INFLUENCE OF PETROLEUM PRODUCTS ON METAL ELEMENTS OF RAILWAY INFRASTRUCTURE

open access: yesNauka ta progres transportu, 2020
Purpose. The main purpose of the work is to improve the safety of railway transport operation. The implementation of this purpose is provided by assessing and preventing the negative influence of petroleum products on the structural elements of the ...
Y. V. Zelenko   +2 more
doaj   +1 more source

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