Ergonomic factors and production target evaluation in eucalyptus timber harvesting operations in mountainous terrains

There are several forest operations involved in Eucalyptus timber harvesting. This study was carried out during brush-cutting; tree felling, bucking, delimbing, piling and manual extraction operations, with the following objectives: a) analyzing, ergonomically, two systems of brush-cutting: one manual and the other semi-mechanized, using two different machines; b) ergonomically evaluating three different brands of pruner machines used in delimbing felled trees. c) determining the feasible target of productivity as a function of ergonomic factors relevant to establish the time of resting pauses for workers in manual and semi-mechanized timber harvesting systems in mountainous terrain. Brush-cutting, either manual or semimechanized, is an activity carried out prior to timber harvesting. It is usually a hard work, with low productivity when compared with mechanized systems. Pruner machines have been used by forest companies, due to the great possibilities to improve productivity, quality and the health of workers. Ergonomics is a discipline that promotes the adequacy of work to the physical and mental characteristics of human beings, seeking to design production systems and products considering relevant aspects, including social, organizational and environmental factors. Companies should consider the ergonomic factor in the determination of daily worker production targets.     

Who volunteers?

Summary The 1990 NHS and Community Care Act outlined an extended rolefor volunteers and voluntary organizations in the provisionof services for disabled adults and older people. In broad terms,the Act assumed an untapped pool of volunteers, ready to contributeat little additional cost to the provision of care. More recentpolicy developments, including Millennium Volunteers (ScottishOffice 1997) have made similar assumptions. For organizationswhich involve volunteers, the expectations of their increaseduse in service provision present considerable challenges, notleast in attracting new recruits and retaining existing volunteers.The research presented in this paper builds on previous workto explore the current practice and organization of volunteeringand to examine critically how far the reality matches the politicalrhetoric about the role of volunteers in the mixed economy ofcare. The paper begins with a critical review of recent policyand practice in volunteering to set the context which providedour key questions. The research methodology is briefly describedand the findings from a survey of 117 active volunteers workingwith adults with learning difficulties, mental health problemsand physical disabilities, and with older people in the Northof Scotland are presented. The research examines the demographyand personality profiles of the volunteers. It examines theirperceptions of volunteering as these relate to motivation, recruitment,selection, training, support, rewards and reasons for leaving.Finally, it examines volunteers' perceptions of the organizationof volunteering. The results are reviewed in relation to thepolicy assumptions about volunteering in the mixed economy ofcare.     

论姚燮的山水词

姚燮山水词有多种面貌和寄寓.居所、园林环境的山水词,多词章婉丽、情致懿雅之作.游观、羁旅中的山水词,有的写景气象阐大,展示了壮阔的境界和襟怀;有的写景清雅,心境恬适;较多的词则以写山水景物慰客愁、证鸿爪,寄偃蹇、羁旅的人生况味,骚雅微婉.题写画意的山水词,再现了画境,并在非现实的词境中展示了人格和生活理想,具有清旷、萧然、闲适之美;词中有画,擅长意象取用和意象组合,讲究色彩效果和远近高低虚实等构图技巧,并重视整体浑融的效果.     

Evaluation of thermal overload in boiler operators

The Brazilians educational institutions need a large energy demand for the operation of laundries, restaurants and accommodation of students. Much of that energy comes from steam generated in boilers with wood fuel. The laboral activity in boiler may present problems for the operator's health due to exposure to excessive heat, and its operation has a high degree of risk. This paper describes an analysis made the conditions of thermal environment in the operation of a B category boiler, located at a Higher Education Institution, located in the Zona da Mata Mineira The equipments used to collect data were Meter WBGT of the Heat Index; Meter of Wet Bulb Index and Globe Thermometer (WBGT); Politeste Instruments, an anemometer and an Infrared Thermometer. By the application of questionnaires, the second phase consisted of collecting data on environmental factors (temperature natural environment, globe temperature, relative humidity and air velocity). The study concluded that during the period evaluated, the activity had thermal overload.     

Assessment of physical workload in boiler operations

The use of boiler wood-fired is fairly common equipment utilized in steam generation for energy production in small industries. The boiler activities are considered dangerous and heavy, mainly due to risks of explosions and the lack of mechanization of the process. This study assessed the burden of physical labor that operators of boilers are subjected during the workday. Assessment of these conditions was carried out through quantitative and qualitative measurements. A heart rate monitor, a wet-bulb globe thermometer (WBGT), a tape-measure and a digital infrared camera were the instruments used to collect the quantitative data. The Nordic Questionnaire and the Painful Areas Diagram were used to relate the health problems of the boiler operator with activity. With study, was concluded that the boiler activity may cause pains in the body of intensity different, muscle fatigue and diseases due to excessive weight and the exposure to heat. The research contributed to improve the boiler operator's workplace and working conditions.     

Ergonomic evaluation of processes and products in the manufacture of upholstery

This study aimed to perform an ergonomic evaluation of industrial processes and products - upholstered sofas - produced in the furniture cluster of Ubá-MG. The used material was collected from two sofas upholstered industries associated with the union of the furniture industries of Ubá region, located in Minas Gerais estate, Brazil. As for the product were evaluated dimensionally 29 upholstered sofas, with 12 being produced by industry "A" and 17 being produced by industry "B". As for the process, were evaluated: the socioeconomic profile of the worker and environmental factors of lighting and noise. The main results of this study showed that the upholstered sofas produced by industries, in general, fulfilled to the recommendations set out in the work in relation to the backrest height and useful seat depth. All the sofas, however, proved to be inadequate in relation to the seat height to the floor and the dimensions of the armrests Regarding environmental aspects, it was observed that in both industries, the activities in most jobs are performed under adverse conditions to the health and safety of workers and nonconformity with the limits set by Brazilian regulatory standard used in this work.     

党的三代领导人与西部大开发

解放50多年来,以毛泽东、邓小平、江泽民为核心的党的三代领导人十分关注西部地区的发展。为了推动西部地区的经济发展和现代化建设,他们进行了艰辛的探索和伟大的实践,在不同的历史时期,采取了不同的政策措施,提出了不同的发展战略,时西部地区的经济发展产生了深远的影响。以江泽民为核心的第三代中央领导集体作出西部大开发的战略决策,将会进一步推动西部地区经济的腾飞。     

浅析台商投资与浙江经济发展

浙江作为长江三角洲的重要组成部分,在吸收利用台资方面具有独特的优势,为促进浙江经济和长江三角洲区域经济发展做出了应有的贡献。通过分析台商投资浙江的特点与发展趋势、台商投资对浙江经济发展的影响,就如何提高利用台资水平、加强浙台经济合作提出了建议。     

Postural analysis of workers in a typical meat processing company in Brazil

Companies have increasingly sought strategies that will ensure a more competitive position in the marketplace. Among these strategies adopted by companies include the health and welfare of the worker, factors currently valued by consumers, especially those of most demanding market. Thus, the postural analysis is of great importance and interest because it is the study of positioning related to body parts like head, torso and limbs, capable of producing loads that may be excessive or insufficient causing disturbances in the muscle skeletal system worker. The aim of this study was to perform a postural analysis of the main sectors of workers (slaughter, cutting room, special cuts, packaging and dispatch) of a typical refrigerator pig industry in Brazil during the execution of their daily activities as well as developing proposals to minimize and/or eliminate the diseases and accidents. The study followed the safety norms of Brazilian Ministry of Labor and Employment. The posture analysis used the OWAS (Ovako Working Posture Analyzing System) methodology. The postures assumed by workers in the sector of packaging were as the most in need of emergency and quick action.     

Ergonomic evaluation of the preparation of cuttings and minicuttings for eucalyptus seedling production, with the use of scissors

This study was conducted in a nursery for eucalyptus seedling production in a forest Company, located in the southern state of Bahia, Brazil. It aimed to evaluate the ergonomic conditions of the preparation of cuttings and mini-cuttings with scissors for Eucalyptus seedling production to increase well-being, satisfaction and safety and minimizing the occurrence of occupational diseases, also improving the process efficiency and final product quality. Environmental conditions, levels of noise, postures, RSI risk and physical workload were assessed. The environmental conditions complied with the recommended norms, except at certain times of day, when workers should make compensation breaks. The workers that collect minicuttings presented postures classified as normal by OWAS. On the other hand, the posture of workers dealing with cutting preparation requires corrections in a short run. The workers were subjected to moderate RSI risk due to the high degree of repeatability found. The physical workload was classified as mild, with no need for ergonomic interventions.