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- Geng, Qiuqing, et al.
(författare)
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Change in contact temperature of finger touching on cold surfaces
- 2001
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Ingår i: International Journal of Industrial Ergonomics. - 0169-8141 .- 1872-8219. ; 27:6, s. 387-391
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Tidskriftsartikel (refereegranskat)abstract
- This study deals with human fingers touching cold surfaces of four materials (aluminium, steel, nylon and wood) at different surface temperatures (-20°C, -15°C, -10°C, -4°C, 0°C and 2°C). Contact finger skin-surface interface temperature and subjective responses on thermal and pain sensations were determined during touching. Type of material and their surface temperature clearly affected the contact cooling of the finger. Individual variation in finger contact cooling was significant. Contact temperature limits for human fingers touching cold surfaces are suggested according to the experimental results. In addition, time to reach a critical temperature (7°C, 5°C or 0°C) when contacting a cold metallic surface is discussed.
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| 3. |
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| 4. |
- Geng, Qiuqing, et al.
(författare)
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The Effect of Protective Gloves on Manual Dexterity in the Cold Environments
- 1997
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Ingår i: International Journal of Occupational Safety and Ergonomics. - : Informa UK Limited. - 1080-3548 .- 2376-9130. ; 3:1-2, s. 15-29
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Tidskriftsartikel (refereegranskat)abstract
- This article presents a study on the effect of different protective gloves (which are commercially available and commonly used in the cold) on manual dexterity in cold environments. The experiments compared statistically four different types of gloves and two different types of gloving (outer or double) at +19 degrees C and -10 degrees C. Performance was determined both objectively and subjectively using two manual dexterity tasks: bolt-nut and pick-up tasks. The response measured was the time of performing each task. Statistical analysis showed that all independent factors such as glove type, participant, object size, and temperature had significant effects on the hand cooling reaction. A significant difference in the performance between the gloves was found in the bolt-nut task. It was also found that outer-inner combination gloving may be an approach to use for precision tasks.
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