A New Method for the Experimental Assessment of Finger Haemodynamic Effects Induced by a Hydraulic Breaker in Operative Conditions

Valentino, Matteo; Rapisarda, Venerando; Scalise, Lorenzo; Paone, Nicola; Santarelli, Lory; Fenga, Concettina; Rossi, Gian Luca

doi:10.1539/joh.46.253

Cited by 16 publications

(18 citation statements)

References 23 publications

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“…Such systems are divided into general and personal protection devices (PPD). The former include adoption of technical and procedural measures, for instance the reduction of environmental pollutants, whereas PPD largely consist of devices worn by workers (e.g., masks, gloves), preventing direct contact with vapors, fumes and/or potentially contaminated material, e.g., biological fluids [294] . Biological risk prevention may involve mandatory vaccine prophylaxis, as in the case of HBV infection.…”

Section: Discussionmentioning

confidence: 99%

Hepatocellular carcinoma and the risk of occupational exposure

Rapisarda

Loreto

Malaguarnera

et al. 2016

WJH

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Hepatocellular carcinoma (HCC) is the most common type of liver cancer. The main risk factors for HCC are alcoholism, hepatitis B virus, hepatitis C virus, nonalcoholic steatohepatitis, obesity, type 2 diabetes, cirrhosis, aflatoxin, hemochromatosis, Wilson's disease and hemophilia. Occupational exposure to chemicals is another risk factor for HCC. Often the relationship between occupational risk and HCC is unclear and the reports are fragmented and inconsistent. This review aims to summarize the current knowledge regarding the association of infective and non-infective occupational risk exposure and HCC in order to encourage further research and draw attention to this global occupational public health problem. Core tip: Hepatocellular carcinoma (HCC) is the fifth most common human cancer. This review summarizes current knowledge regarding the occupational risk factors of HCC. In particular, we underline not only the infective but also non-infective occupational risk exposure, including chemical agents and toxic metabolites which are a major cause of liver damage.

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Section: Discussionmentioning

confidence: 99%

Hepatocellular carcinoma and the risk of occupational exposure

Rapisarda

Loreto

Malaguarnera

et al. 2016

WJH

Self Cite

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“…The transmitted vibration measured on the surface of the system is used to study the transmissibility. The major transducers used for the measurement are accelerometers and laser vibrometers 50,51) . Ksiazek and Tarnowski 52,53) reported the use of a high speed camera for the measurement, which showed reasonable results up to 150 Hz.…”

Section: Vibration Transmissibilitymentioning

confidence: 99%

“…The major limitations of this method are that the adapter may change the hand-tool coupling relation, and that the pressure distribution cannot be measured. Wafer-thin, light, and flexible force pressure sensors can be wrapped around the tool handle 50,116,122) , incorporated into a work glove 77) , or distributed on the palm 78,123) . Electromyography (EMG) has been widely used for measuring hand forces in manual tasks 124,125) .…”

Section: Applied Forcesmentioning

confidence: 99%

Recent Advances in Biodynamics of Human Hand-Arm System

Dong

Welcome

2005

INDUSTRIAL HEALTH

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The biodynamics of human hand-arm system is one of the most important foundations for the measurement, evaluation, and risk assessment of hand-transmitted vibration (HTV) exposure. This paper presents a new conceptual model relating factors influencing cause-effect relationships for HTV exposure, a new study strategy, and a comprehensive review of the recent advances in the biodynamics closely associated with HTV exposure. The review covers the following five aspects: theoretical modeling of biodynamic responses, vibration transmissibility, driving-point biodynamic responses, evaluation of anti-vibration gloves, and applied forces. This review finds that some significant advances in each of these aspects have been achieved in the recent years. Several important issues and problems in the biodynamic measurement have been identified and resolved, which has significantly helped improve the reliability and accuracy of the experimental data. The results reported in recent years suggest that, from the point of view of biodynamics, the frequency weighting specified in ISO 5349-1 (2001) overestimates the low frequency effect but underestimates the high frequency effect on the fingers and hand. The major problems, issues, and topics for further studies are also outlined in this paper. It is anticipated that the further studies of the biodynamics of the system will eventually lead to establishment of a robust vibration exposure theory. Although this review focuses on the biodynamics of the hand-arm system, the fundamental concepts and some methodologies reviewed in this paper may also be applicable for the study of whole-body vibration exposure.

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“…While such sensors may provide reasonable measurements of the pressure that is perpendicular to the contact surface, it is difficult to use such sensors to measure the tangential or friction force on the tool handles. These sensors have also been used to measure the dynamic forces 26,27) , but their reliability and accuracy have not been sufficiently proven. The further advancement of these technologies may lead to more convenient and reliable methods for the measurement.…”

Section: Introductionmentioning

confidence: 99%

“…The further advancement of these technologies may lead to more convenient and reliable methods for the measurement. So far, however, while the applied grip, push, and contact forces on several vibrating tools have been reported from a few studies 6,16,23,26) , limited information on the biodynamic force is available 27,28) . Thus, the fundamental characteristics of the biodynamic force have not been seriously investigated.…”

Section: Introductionmentioning

confidence: 99%

Estimation of Biodynamic Forces Distributed on the Fingers and the Palm Exposed to Vibration

Dong¹,

Welcome²,

Wu³

2005

Ind Health

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The hand-tool coupling force in the operation of a vibrating tool is generally composed of applied force (AF) and biodynamic force (BF). There is wide interest in quantifying the coupling force. The objectives of this study are to develop an effective method for estimating the BF and to investigate its fundamental characteristics. Using the biodynamic response of the hand-arm system, such as apparent mass or mechanical impedance, and the acceleration that can be measured on vibrating tools, this study proposed an indirect method for the BF estimation. The BFs distributed on the fingers and the palm of the hand along the forearm direction (z h -axis) in the operations of eighteen types of tool were estimated and used to identify the distributed BF characteristics. The results indicate that the BFs depend on both the tool vibration spectrum and the biodynamic properties of the hand-arm system. The dominant BF frequency component is usually at the same frequency as the dominant vibration frequency of each tool. The BF distributed on the palm (2-98 N) is much higher than that distributed on the fingers (1-30 N) at frequencies less than 100 Hz, but these biodynamic forces (2-22 N) are comparable at higher frequencies. The palm BF on several tools with relatively low dominant frequencies (≤ 40 Hz), especially in the resonant frequency range (16-40 Hz), is comparable with the applied palm force (50-100 N). Since the resonant frequency of the palm BF is also in the range of the dominant vibration frequencies of many percussive tools, the palm BF may be related to the disorders in the wrist-arm system. The BF on the fingers is likely to be closely related to the dynamic stresses and deformations in the fingers and it may thus be used to quantify the finger vibration exposure.

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A New Method for the Experimental Assessment of Finger Haemodynamic Effects Induced by a Hydraulic Breaker in Operative Conditions

Abstract: A New Method for the Experimental Assessment of Finger Haemodynamic Effects Induced by a Hydraulic Breaker in OperativeConditions: Matteo VALENTINO, et al.

Cited by 16 publications

References 23 publications

Hepatocellular carcinoma and the risk of occupational exposure

Hepatocellular carcinoma and the risk of occupational exposure

Recent Advances in Biodynamics of Human Hand-Arm System

Estimation of Biodynamic Forces Distributed on the Fingers and the Palm Exposed to Vibration

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