Sökning: "White finger"

Visar resultat 1 - 5 av 11 avhandlingar innehållade orden White finger.

1. 1. Attenuation of hand-held machine vibrations. Application of non-linear tuned vibration absorber

   Författare :Hans Lindell; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Impact machine; Hand-arm vibration; High frequency vibration; ATVA; Nonlinear tuned vibration absorber; White finger; HAVS; Transient vibration; Auto Tuned Vibration Absorber; Vibration dynamics; ISO 5349;

   Sammanfattning : Vibration injury in the hand-arm system from vibrating hand-held machines is one of the most common occupational health injuries and causes severe and often chronic nerve and vascular injuries to the operator. The objective with this study is to contribute to reduce hand-arm vibration injuries, first by developing methods of redesigning machines that will lower their vibration level and second to study how high frequency vibrations (HFV) above 1250 Hz effect the finger tissue which are not included in the current standard for risk evaluation. LÄS MER

3. 2. Health effects from occupational hand-arm vibration

   Författare :Per Vihlborg; Pål Graff; Sverre Wikström; Karim Makdoumi; Magnus Svartengren; Örebro universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Hand-arm vibration; Raynaud’s phenomenon; vibration white finger; carpal tunnel syndrome; acute vibration exposure; neuropathy;

   Sammanfattning : Hand-arm vibration (HAV) is a common occupational exposure in Sweden and worldwide that causes both acute transient effects and persistent hand-arm symptoms. The health effects include vibration-induced Raynaud’s phenomenon, neuropathic symptoms, carpal tunnel syndrome (CTS), and musculoskeletal disorders. LÄS MER

4. 3. Structural and functional changes in the brain after surgically repaired median nerve injury

   Författare :Per F. Nordmark; Roland S. Johansson; Henrik Ehrsson; Umeå universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Humans; Hand; Touch; Peripheral nerve injury; Magnetic resonance imaging; Somatosensory Cortex; Cortical plasticity; fysiologi; Physiology; handkirurgi; hand surgery;

   Sammanfattning : Despite the best available surgical repair, traumatic median nerve injury within the forearm typically causes lifelong impairment in hand function. This stems from an inadequate reinnervation of the nerves supporting sensory functions of the thumb, index and long finger, and of nerves supplying intrinsic hand muscles. LÄS MER

5. 4. Neural correlates of individual differences in personality and intelligence : studies using an isochronous timing task and voxel based morphometry

   Författare :Lea J Forsman; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :;

   Sammanfattning : It is easy to imagine that humans have always noticed the differences between themselves and others and perhaps even speculated about the origins of these differences. The study of individual differences as a formal field encompasses variations in intelligence and personality as well as other dimensions. LÄS MER

7. 5. Nutritional and Microbiological Evaluation of Fermented Cereal Weaning Foods

   Författare :Wilbald S.M. Lorri; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : Protein energy malnutrition (PEM) is the most serious nutritional problem affecting pre-school children in developing countries. The low energy and nutrient density of the diet and the presence of anti-nutritional factors contribute to this condition, as do the low frequency of feeding and transmission of diarrhoea-causing pathogens via the food. LÄS MER