The problem related to the inadequate position of workers during lifting heavy loads is the everyday life of many environments, such as industrial halls or warehouses, which often results in the ...deepening of the worker's spine load problem.An analysis of such a workplace was carried out in this paper. The workloads at specific body zones were determined, whether they were within the prescribed limits or exceeded it, and on that basis a redesign of the workspace was made in accordance to the anthropological values of the model.
The action of forces in the back and abdomen under conditions of loading of different external forces at different bending angles is unexplored area. This paper presents a methodology that enables ...calculation of the magnitudes of forces in the back and abdominal muscles using the combined techniques of the CATIA software system, appropriate mathematical model and polynomial regression analysis.The person of 180cm in height and 85 kg in weight is loaded with 5 + 5 kg of cargo in both hands, and three cases of bending angles of 150, 300 and 600 relative to the vertical axis are analysed.
Various problems regarding the process of loading baggage on aircraft have been identified in terms of functioning of the “man – machine – working environment” system, causing health problems in a ...number of workers. This study tries to offer an effective solution to the problem. We have tried to prove the connection between our subjects’ health problems and their working environment. We have compared their workload before and after the improvement of their working environment, calculating energy consumption in order to show the effectiveness of the improvement. An evaluation of the study’s scientific contribution within the consistent and comprehensive approach to observing and exploring the influence of various parameters on working ability is called for.
SAŽETAK: Kako su u procesu utovara prtljage u zrakoplov uočeni brojni nedostaci u pogledu funkcioniranja sustava „čovjek-stroj-radna okolina“, zbog čega je došlo do zdravstvenih problema kod više radnika, nastojalo se u ovom radu ponuditi kvalitetno rješenje. U radu se nastojala dokazati povezanost obolijevanja naših ispitanika s radnom okolinom u kojoj oni rade, i to u funkciji opterećenja prije sanacije i poslije sanacije radne okoline, odnosno putem energetskog proračuna prikazati učinkovitost sanacije. S tim u vezi, potrebno je sagledati znanstveni doprinos rada u sustavnom i integralnom pristupu promatranja i istraživanja utjecaja svih parametara na radnu sposobnost zaposlenih.
Aim
To determine the effect of the load on the meniscus in relation to a different angle, and to present the impact of force on eventual injury of menisci.
Methods
Research included 200 males with ...average height of 178.5 cm, mass 83.5 kg, and average age of 22 years. The simulation of treadmill that was used in the evaluation of ischemic heart disease was made. Effects on the knee were evaluated by measuring at different inclinations (5°70’, 6°80’, 7°90’, 9°10’, 10°20’, 11°30’ and 12°40’).
Results
With increasing ascent of treadmill the load on the meniscus also increased. Each increase in ascent after 22% (which
corresponded to the angle of 12°40’ and seventh degree of load according to the Bruce protocol) at given anthropological values was an etiological factor for meniscus injury.
Conclusion
The seventh degree of load according to the Bruce protocol can lead to the meniscus injury.
Various problems regarding the process of loading baggage on aircraft have been identified in terms of functioning of the "man - machine - working environment" system, causing health problems in a ...number of workers. This study tries to offer an effective solution to the problem. We have tried to prove the connection between our subjects' health problems and their working environment. We have compared their workload before and after the improvement of their working environment, calculating energy consumption in order to show the effectiveness of the improvement. An evaluation of the study's scientific contribution within the consistent and comprehensive approach to observing and exploring the influence of various parameters on working ability is called for.
The problem of irregular sitting position of pupils during classes in schools occurs in everyday life, depending on the use of a workbench, which results in deepening the problems of a spinal column ...loading. Spinal load analysis was performed by a software simulation depending on a seating position in the school bench. Processing the data in Excel, the current utilization of the workbench surface was determined and then a new design offered. The results of the work offer a completely new design of the school bench with a special emphasis on the surface of the workbench, as well as the optimum seating position for pupils during classes, resulting in spinal relief and an increased seating comfort.
Investigations have shown that noise is one of the etiologic factors that leads to a risk of cardiovascular incidence.
To present effect of noise on arterial tension and heart rate of workers who ...work on machine press during period of three-years.
The study had a prospective character and included 30 subjects (n = 30) who were monitored over a three-year period (36 months). The respondents worked at the factory "Cimos" on machine press (Zenica, Bosnia and Herzegovina). Ten machine presses were monitored, and three workers worked on each press. Approximately every worker was affected by a wide range of noise between 65 and 110 dB in the workplace (via isohypse). MATLAB (version 9.4, MathWorks, Natick, Massachusetts, United States of America (USA)) software was used to estimate the possible damage caused by noise in factories that produce noise in their work.
During the three-year period, arterial tension in the subjects increased, and at the end of the observed period, they were considered as patients with a diagnosis of arterial hypertension grade I. The tension depends on the strength of the produced noise, and the values also depend on position of the respondent on the machine press.
Noise prevention has become a problem of modern medicine. The result of our work allows estimation of arterial hypertension in specified time in case of exposure to a certain strength of noise. Prevention of noise, daytime noise prevention as well as better equipment for work and preventive equipment are imposed as imperative in such or similar conditions, with the need of development of national strategies for this issue in countries where they are not present.
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