Results 21 to 30 of about 359,355 (265)
Noise Measurements and Noise Measurement Systems [PDF]
The Journal of the Acoustical Society of America, 1969 Only a brief description of the measurement of sound level and sound-pressure level is given in S1.2-1962, American Standard Method for the Physical Measurement of Sound. The initial task of S1-W-51 is to prepare a partial revision of S1.2-1962, which includes recommended procedures for measuring weighted and band-limited sound-pressure levels under ...
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Study on vibration and noise influence for optimization of garden mower
Nonlinear Engineering, 2021 Advancement in engineering provides various improvement in quality life while taking consideration of important factors for safety and environment. The use of mower food maintenance of land it is very common across several parts of the world with some ...
Chen Yimin +4 more
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Probability of occurrence of health and safety risks on scaffolding caused by noise exposure
Journal of Civil Engineering and Management, 2018 The paper presents the results of measurements for one hundred and ten scaffolds located in five cities in different parts of Poland. Measurements were made between April of 2016 and October of 2017. The environmental tests performed on scaffoldings were
Marek Jabłoński +2 more
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Applied Sciences, 2021 After five decades of development, mode-locked lasers have become significant building blocks for many optical systems in scientific research, industry, and biomedicine.
Haochen Tian, Youjian Song, Minglie Hu
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Low-Frequency Noise Modeling Using EMD with Experimental Results Validation [PDF]
هوش محاسباتی در مهندسی برق, 2023 Low-frequency noise modeling and estimation is a critical issue in the design of analog and digital circuits, especially for short-channel CMOS technologies.
Zeinab Shamaee +2 more
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Vojnotehnički Glasnik, 2005 U radu su prikazane osnovne teorijske postavke i matematički modeli koji su značajni za obradu akustičkih i neakustičkih podataka u procesu određivanja buke mlaznih aviona prema međunarodnom standardu ICAO, Annex 16, za potrebe sertiflkacije.
Gordana Jurin, Milorad Pavlović
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Structural and functional pathology of the university building
Revista Ingenio, 2013 This article is a reflection of the result of the evaluation of the structural and functional pathology of the building of the Francisco de Paula Santander Ocaña University (UFPSO), finding pathological manifestations in concrete and masonry with ...
Nelson Afanador García +2 more
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Revista Latino-Americana de Enfermagem, 2005 Estudo tipo experimento não controlado. Objetivo: quantificar o ruído de impacto das 23 incubadoras em operação das unidades de cuidado intensivo e intermediário de um hospital universitário, público, de Ribeirão Preto-SP. Metodologia: medições ocorreram
Milena D. Oliveira Rodarte +5 more
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The Effects of Signal System and Traffic Flow on the Sound Level
Applied Sciences, 2020 Traffic noise is a major pollution problem in Hong Kong and many large cities throughout the world. Indeed, traffic noise and traffic flow patterns interact, however, there is a very little research effort studying it.
Chi-kwong Wong, Yiu-yin Lee
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Nature, 1936 THOSE interested in noise measurement will be aware that a new unit of equivalent loudness, the British Standard Phon, has been introduced by the British Standards Institution (Glossary of Acoustical Terms and Definitions B.S. 661—1936). The standard of reference is a plane sound wave of 1,000 cycles per sec, heard alternately with the noise to be ...
B. G. CHURCHER, A. J. KING
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