noise observation
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2022 ◽  
Vol 40 (1) ◽  
pp. 30-36
Author(s):  
Yudi N. IHSAN ◽  
◽  
Noir P. PURBA ◽  
Ibnu FAIZAL ◽  
Agnes ANYA ◽  
...  

This paper presents the effect of the COVID-19 pandemic on the Indonesian seas from April to October 2020. Data were mainly obtained through literature studies focusing on coastal and ecosystem services, noise observation in the ocean, and in-situ data for atmospheric conditions. The results of this study found that the pandemic has given the oceans and ecosystems time to recover from anthropogenic stresses even though the tourism and fisheries sectors have experienced strong economic shocks. A decrease in the amount of pollution in several major cities in Indonesia was also found during the pandemic period.


2019 ◽  
Vol 66 (5) ◽  
pp. 743-747 ◽  
Author(s):  
Maximilian Marx ◽  
Xavier Cuignet ◽  
Sebastian Nessler ◽  
Daniel De Dorigo ◽  
Yiannos Manoli

2012 ◽  
Vol 721 ◽  
pp. 120-126 ◽  
Author(s):  
Grzegorz Psuj ◽  
Tomasz Chady ◽  
Masato Enokizono

The purpose of this paper is to present the results of observation of material degradation process in steel samples under combined conditions of static and cyclic dynamic loading, using selected electromagnetic NDT methods. To evaluate damages a Barkhausen noise observation, an AC magnetization, a magnetic flux leakage and eddy current method were used.


1999 ◽  
Vol 589 ◽  
Author(s):  
D.E. Luzzi ◽  
B.W. Smith

AbstractWe report on the imaging of single C60 molecules adsorbed on the surface of carbon nanotubes. In the course of the work, the efficacy of carbon nanotubes as substrates for the high signal-to-noise observation of molecules is examined. The stability of nanotubes as a function of temperature, chemical environment and irradiation environment is explored. Carbon nanotubes are found to have a threshold energy for ballistic irradiation damage of approximately 85 keV. Finally, the use of nanotubes as in-situ reaction chambers and for other in-situ experimentation is demonstrated.


1995 ◽  
Vol 38 (11) ◽  
pp. 1203-1230 ◽  
Author(s):  
D N Klyshko ◽  
Anatolii V Masalov

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