نتایج جستجو برای: vdv

تعداد نتایج: 73  

ژورنال: صوت و ارتعاش 2017

 بدن ما در تمامی وسایل نقلیه با ارتعاش تمام بدن مواجه است. ارتعاش سبب اختلالات اسکلتی – عضلانی در اندام­هایی مانند شانه­ها، گردن و کمر می­شود. در این پژوهش، مواجهه مسافرین در وضعیت نشسته در 11 قطار در خطوط فعال مترو تهران در زمان انجام مطالعه بر اساس روش­های [i]RMS و[ii]VDV استانداردهای BS 6841 و  ISO 2631-1  و با دستگاه ارتعاش سنج و آنالیزور SVAN 958 انجام گردیده است. نتایج حاصل از مطالعه نشان...

2016
Lage Burström Ville Hyvärinen Magnar Johnsen Hans Pettersson

Objectives We aimed to measure and evaluate whole-body vibration (WBV) exposure among drivers of mining vehicles in the Barents region. Study design In the period from November 2012 to August 2014, this cross-sectional study was carried out at 3 mines in Finland, Norway and Sweden as part of the MineHealth project. Methods Measurements of WBV were conducted on the surface of the driver's seat d...

Journal: :Annals of work exposures and health 2017
Luz S Marin Andres C Rodriguez Estefany Rey-Becerra Hugo Piedrahita Lope H Barrero Jack T Dennerlein Peter W Johnson

This study characterized whole-body vibration exposures in a set of vehicles that operate in open-pit mines and compared three different daily exposure parameters based on the ISO 2631-1:1997 and ISO 2631-5:2004 standards. Full-shift, 6 to 12-hour, continuous whole-body vibration measurements were collected from 11 representative types of vehicles in terms of hours of operation and number of ve...

Journal: :Virus research 2000
L N Yashina N A Patrushev L I Ivanov R A Slonova V P Mishin G G Kompanez N I Zdanovskaya I I Kuzina P F Safronov V E Chizhikov C Schmaljohn S V Netesov

To identify the hantaviruses causing hemorrhagic fever with renal syndrome (HFRS) in the Far East of Russia, blood samples collected from HFRS patients in 1994-1998, were examined by reverse transcription-polymerase chain reaction. In addition, 36 sera were tested by an immunofluorescence assay for antibodies against Hantaan, Seoul, Puumala, and Khabarovsk viruses, and 54 samples were tested by...

Journal: :Industrial health 2010
Giovanni Moschioni Bortolino Saggin Marco Tarabini

This paper describes the results of a long-term whole-body-vibration monitoring campaign performed on different cars with different drivers. The weighted and the un-weighted root-mean-square acceleration, the MTVV and the VDV have been monitored on five different cars in regular usage for over one hundred hours of measurements on urban roads and highways. The variability of the above parameters...

2015
Lynne Clay Stephan Milosavljevic Catherine Trask

Whole body vibration (WBV) exposure is recognised as a risk factor to the high prevalence of spinal musculoskeletal disorders (MSDs) experienced by farmers. The purpose of this study was to identify self-reported predictors that could be used to develop statistical models for WBV exposure (expressed as A8rms and VDV) in farmers operating agricultural quad bikes. Data were collected in the field...

2011
Ramakrishnan Mani Stephan Milosavljevic John Sullivan

Objectives: The aim of this field study was to explore the relationship between body mass and quad bike induced whole-body vibration (WBV) exposure in a group of New Zealand rural workers. Methods: WBV exposure was recorded using a seat pad mounted tri-axial accelerometer while rural workers (n=34) were driving a quad bike for approximately half an hour on a pre-marked track on farm terrain. Pe...

2003
Bojan Petek

This paper presents a corpus-based approach to determination of locus equations for Slovenian language. The SpeechDat(II) spoken language database is analyzed first for all available target VCV contexts in order to yield candidate subsets for the acoustic-phonetic measurements. Only the VCVs embedded within judiciously chosen carrier utterances are then selected for the (F2 vowel, F2 onset) mea...

Journal: :Applied sciences 2023

Vibration assessment of upland crop machinery under development is essential because high vibrational exposures affect machine efficiency, service life components, degradation the working environment, and cause health risks to operator. It intensively assessed for automobiles as well large off-road agricultural vehicles (i.e., tractors). However, it mostly overlooked in case small or medium rid...

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