ARTICLES

Filter  
Active filters 0
Remove
  

Refine your searches by:

Collections
Oceanography
Geology
Geography
Research
Pure sciences
Education
Electrical and electronic
Technology
Communication
Economy
all records (14)

Languages
English

Countries
Indonesia
USA
Italy
Switzerland
Canada
Philippines

Years
2022
2021
2020
2019
2018
2016
2013
2012
2006
2000

Filter  
 
28  Articles
1 of 4 pages  |  10  records  |  more records»
Conventional ceramic piezoelectric materials have been used in hydrophones for sonarapplications since 1940's. In the last few years since the discovery of polymeric piezoelectrichydrophones, the technology has matured, applications have emerged in extrao... see more

Underwater noise poses serious threats to marine mammals, which rely on underwater sound primarily for communication, orientation and foraging. In this study, underwater noise from dynamite fishing was analyzed to infer possible effects on local marine ma... see more

Cymbal is a class-V flextensional transducer that consists of thickness poled ceramic disc sandwiched between the two metal end caps which acts as a mechanical transformer. Cymbal transducers were fabricated using piezoceramic discs of compositions Pb0.98... see more

The IEEE standard on piezoelectricity recommends methods to determine the coefficientsof piezoelectric ceramics and the sizes of the samples to be used. A method to determine thedifference between the actual coefficients and the coefficients determined us... see more

ABSTRAKDalam pencarian suatu obyek di bawah air dibutuhkan metode khusus yang digunakan dengan suara (gelombang akustik), dikarenakan suara dapat merambat dalam jarak jauh pada air. Frekuensi yang dapat diterima oleh SONAR bergantung pada alat penerima ya... see more

ABSTRAKDalam pencarian suatu obyek di bawah air dibutuhkan metode khusus yang digunakan dengan suara (gelombang akustik), dikarenakan suara dapat merambat dalam jarak jauh pada air. Frekuensi yang dapat diterima oleh SONAR bergantung pada alat penerima ya... see more

Underwater Positioning System (UPS) is a system to track the existence of the position of an object by utilizing the arrival time of the signal measurement. On land, the system uses an electromagnetic signal called GPS. However, because it cannot penetrat... see more

We present the first investigation performed on the seismicity of Southern Tyrrhenian Sea, off-shore Sicilywith the contribution of data from broad-band ocean bottom seismometers and hydrophones (OBS/H). Offshoredata were recorded during the TYrrhenian De... see more

The present paper will discuss the work in progress at the Department of Physics of the University of Pisa in collaborationwith the IFAC laboratory of CNR in Florence to develop pressure sensors with outstanding sensitivityin the acoustic and ultrasonic r... see more

1 of 4 pages  |  10  records  |  more records»