1,721,004 research outputs found
Vibration risk for drivers of earth-moving machinery: assessment of the seat dynamic efficiency
No full textVibrazioni trasmesse all’intero corpo dalle macchine operatrici utilizzate nei cantieri di scavo di gallerie stradali
No full textLavorare in sicurezza
No full textCD-ROM prodotto per la formazione a distanza nell’ambito del progetto Sicurezza nei luoghi di lavoro, inserito nell’Iniziativa Comunitaria ADAPT (0739/a2/Reg.). Produzione: VideoMemory srl, Nuoro, settembre 1998
Mechanical vibration transmitted by hand-held power tools used in mining, rehabilitation and construction work
No full textAccording to the European directive 44/2002/CE the occupational exposure to mechanical vibration may be assessed by using relevant information on the probable magnitude of the vibration transmitted by the equipment in use, including those information provided by the manufacturer. However, such information has to be consistent with the specific working practices considered, while the vibration emission indicated by the manufacturer refer to standard operating conditions. When considering hand-arm vibration, the number of variables which affect the actual acceleration measured at the tool handles is considerable. This article discusses the results of the vibration measurements taken from a variety of hand-held power tools used for secondary activities serving mining, mine site rehabilitation and construction work
Occupational exposure to whole-body vibration: unfavourable effects due to the use of old earth-moving machinery in mine reclamation
No full textSegnali acustici di pericolo e progettazione degli spazi di lavoro nelle attività estrattive
No full textAssessment of visual impact induced by surface mining with reference to a case study located in Sardinia (Italy)
No full textSurface mining and quarrying typically generate
a considerable number of environmental impacts
among which landscape alteration remains one of the most
significant. Although landscape alteration does not directly
affect public health, it may produce an adverse reaction
among potential observers and compromise the use and
potential growth of the surrounding territory. In order to
assess the impact produced by surface excavation, some
aspects of landscape modification can be objectively
measured, such as the extent of the visible alteration, its
shape and the chromatic contrast with the surroundings.
With reference to a case study located in Sardinia, this
article discusses the implementation of two different visual
impact assessment methods, one defined by the EC decision
272/02 (Commission Decision 2002), the other previously
proposed by the authors of the present article and
based on the estimation of the impact indicator Lvi (level of
visual impact). The comparison of the results proves that
the method established by the EC decision leads to the
underestimation of the visual impact for alterations which
are significantly wider than their height. On the other hand,
the implementation of the Lvi method clearly shows how
the indicator is affected by the quarry’s lateral extent and
suggests the possibility of calculating a global impact
factor LVI to be associated to a given route, considering
the variability of the visual impact with the curvilinear
abscissa of the route itself
Visibility of Surface Mining and Impact Perception
No full textA visual impact evaluation method specifically designed to assess landscape
alteration as a result of surface mining and quarrying would represent a
fundamental aid for both those involved in the early stages of mine planning and
design (mining companies) and those in charge of controlling and verifying
environmental impacts (government authorities). This research is based on
implementation of the visual impact indicator Lvi, which takes into account two
parameters among those physically measurable: the extent of visible alteration
in the landscape and the chromatic contrast between bare rock and the
surrounding environment. Both parameters can be quantified by processing one
or more digital images taken from the most significant viewpoints. The results of
a test applied to two samples of 60 students showed a good correlation between
the Lvi values, calculated for ten selected cases, and the impact perception
declared by the interviewees
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