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Assessment of whole body vibration among forklift drivers using ISO 2631-1 and 2631-5
No full textThesis (M.S.)--Wichita State University, College of Engineering, Dept. of Industrial & Manufacturing EngineeringThe use of forklifts to move material is very common in large manufacturing companies.
Exposure to whole body vibration from industrial vehicles such as forklifts has been associated
with low back pain and also with the degeneration of intervertebral disc. Predicted health risks,
associated with the operation of forklifts, based on ISO 2631-1 criteria are limited and have not
yet been determined according to ISO 2631-5 criteria. Therefore, the objective of this study was
to quantify the whole body vibration exposure levels during the operation of different types of
forklifts and to quantify WBV exposure levels using ISO 2631-1 and ISO 2631-5 standards.
Hence, health risks predicted by ISO 2631-1 and 2631-5 criteria are reported and compared in
this study. This research was conducted at a local aircraft manufacturing company in Wichita,
KS. Vibration exposure was measured according to procedures established in ISO 2631-1. A triaxial
seat pad accelerometer was used to measure vibration exposure at the operator/seat
interface. Vibrations were measured passively with the use of a battery-operated datalogger
while employees drove their forklifts during a normal work day. The results were compared in
accordance to frequency-weighted r.m.s values, vibration dose values, equivalent compressive
stress Sed and the R factor. According to ISO 2631-1 criteria, two forklift operators were
identified to have a high risk of exposure and three forklift operators were identified to have a
moderate risk of exposure in accordance with health guidance caution zone (HGCZ) boundaries
with A (8) as a measure. Similar results were achieved from the Sed and R factor values which
were the measure of ISO 2631-5. Adverse health effects on the lumbar spine according to ISO
2631-5 were always lower than the risks predicted by ISO 2631-1 criteria. But, VDV (a measure
of ISO 2631-1) showed similar results with ISO 2631-5 measures
Holloway, J, 2631
No full textThis record was harvested from a previous catalogue system and will be withdrawn in 2025. Information in this record may be superseded or incomplete. Visit this record in UMA's new catalogue at: https://archives.library.unimelb.edu.au/nodes/view/392946Surname: HOLLOWAY. Given Name(s) or Initials: J. Military Service Number or Last Known Location: 2631. Missing, Wounded and Prisoner of War Enquiry Card Index Number: 57221.212203
Item: [2016.0049.25239] "Holloway, J, 2631
Astronomische Nachrichten, nos 2625-2631
No full textRadau Rodolphe. Astronomische Nachrichten, nos 2625-2631. In: Bulletin astronomique, tome 1, 1884. pp. 627-632
Commento all'art. 2631 c.c., omessa convocazione del'assemblea
No full textL'autore svolge un aggiornato commento dell'illecito amministrativo di cui all'art. 2631 c.c., l'omessa convocazione dell'assemble
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Block Card 2631 Claredale Road
No full textThis image was produced by the Auditor's Office in Lucas County, Ohio for tax assessment purposes. Associated dates are approximate. Descriptive terms related to this photograph include: Dwelling | 2631 Claredale Road (Toledo, Ohio) | Ranch houses | Maxwell Place Plat Two (Toledo, Ohio) | Deveaux Area (Toledo, Ohio) | West Toledo area (Toledo, Ohio
Block Card 2631 Ivy Place
No full textThis image was produced by the Auditor's Office in Lucas County, Ohio for tax assessment purposes. Associated dates are approximate. Descriptive terms related to this photograph include: Bungalow Style | Dwelling | 2631 Ivy Place (Toledo, Ohio) | Douglas Park Addition (Toledo, Ohio) | Deveaux Area (Toledo, Ohio) | West Toledo (Toledo, Ohio
Comparing Health Risks to Load-Haul-Dump Vehicle Operators Exposed to Whole-Body Vibration Using EU Directive 2002/44EC, ISO 2631-1 and ISO 2631-5
No full textThe purpose of this study was to evaluate health risks to operators of large and small load-haul-dump (LHD) vehicles exposed to whole-body vibration (WBV), based on criteria established in ISO 2631-1, ISO 2631-5, and EU Directive 2002/44 EC. Studies simultaneously evaluating health risks based on all three standards are limited. Operator WBV exposure was measured in accordance with ISO 2631-1 using a tri-axial seat pad accelerometer. According to ISO 2631-1, four of the seven large LHD vehicle operators and three of six small LHD vehicle operators were exposed to WBV above the 8-hour vibration dose value (VDV) health guidance caution zone (HGCZ). According to the EU Directive 2002/44/EC criteria one of the seven large LHD vehicle operators and one of the six small LHD vehicle operators were exposed to WBV above the VDV daily exposure limit. However, health risks predicted by ISO 2631-5 criteria only placed one of seven large LHD vehicle operators and one of the six small LHD vehicle operators in the high probability of an adverse health effect category. Thus, the probability of adverse health effects, associated with WBV exposure during LHD vehicle operation, is suggested to be greatest based on the ISO 2631-1 8-hour VDV HGCZ and lowest based on ISO 2631-5 Sed criterion values
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