Search results for "Safety"
showing 10 items of 1959 documents
Compression tests of cv. Nocellara del Belice table olives for texture evaluation during storage
2014
The influence of pasteurization temperature and time of treatment on the flesh firmness and the evolution of microbial communities was studied for table olives Cv. Nocellara del Belice, packed in glass jars and processed with a tunnel pasteurizer. Pasteurization at industrial scale was carried out within a tunnel pasteurizer applying the treatment at 75 °C for 8 min in the thermal center of the jars. Besides flesh firmness and microbial evolutions, pH, total ti-tratable acidity (TTA) and colour were evaluated for the table olives during storage at 6, 12 and 15 months from packing. Table olives showed a high stability and an acceptable flesh firmness for the entire period under observation. …
Risk exposure to vibration and noise in the use of tracklaying tractors
2014
Human exposure to mechanical vibration may represent a significant risk factor for exposed workers in the agricultural sector, with particular reference to the operators driving tractors. Also noise in agriculture is one of the risk factors to be taken into account for the evaluation of workers health and safety. In particular, one of the major sources of discomfort for the workers operating a tractor is the noise to which they are subjected during work. In Italy, Law Decree 81/2008 has defined the obligations of vibration and noise assessment and risk management.The aim of this study is to evaluate the risk of exposure to whole-body vibration for the operator driving a tracklaying tractor …
Analyzing the role of soil water retention curve in slope stability for differently structured soils
2016
We analyzed the mechanical and hydrological effects of soil water retention curve (SWRC) models on the slope stability analyses of soils with unimodal and bimodal behavior. We used three different SWRC models, two bimodal models (Ross&Smettem and Dexter) vs. the traditional van Genuchten model, to evaluate the Factor of Safety (FS) of a simple designed hillslope, based on the Bishop approach for unsaturated soils. Two formulations for term were also considered. Results indicate that in cases of clayey soils, changes in FS obtained with different SWRC models especially at soil moisture values within the residual zone. In sandy soils the choice of formulations can be more important…
Integrated production of biopolymers with industrial wastewater treatment: Effects of OLR on process yields, biopolymers characteristics and mixed mi…
2022
The production of polyhydroxyalkanoates (PHA) using industrial wastewaters as feedstocks is a current and challenging topic. This study investigated the production of biopolymers by a mixed microbial culture under different OLRs equal to 1 kgCOD m-3d-1 (Period 1), 2 kgCOD m-3d-1 (Period 2) and 3 kgCOD m-3d-1 (Period 3). The maximum PHA content was achieved in Period 2 (0.38 gPHA gTSS-1), whereas lower values were obtained in Period 1 (0.13 gPHA gTSS-1) and Period 3 (0.26 gPHA gTSS-1). Overall, the maximum PHA productivity resulted equal to 0.08 gPHA L-1h-1 (P2), 0.05 gPHA L-1h-1 (P1) and 0.04 gPHA L-1h-1 (P3), respectively. The molecular weight of the PHA increased from Period 1 (250 kDa) t…
The global comfort criteria as a tool for the optimization of the safety, quality and efficiency in the railway tracks.
2012
From the results of some memories already introduced in the VI International Conference of "Stochastic Geometry, Convex Bodies, Empirical Measure & Applications To Mechanics And Engineering Of Train-Transport", it’s improved now a criteria, based on global comfort analyses , that allows to optimize the safety of the exercise, the quality and the economic efficiency into the available resources.
Understanding Safety-Related Issues for Pedestrians at Modern Roundabouts. Journal of Sustainable Development, 5(4):23-37
2012
This paper examines the safety-related issues for pedestrians at modern roundabouts. For this purpose findings of research studies documented in the scientific literature and best practices have been examined trying to focus on roundabout installations by a pedestrians safety perspective. Whereas one of the main reasons for which roundabouts are built is related to safety benefits, roundabout design features and implications in road casualties have been commented first to evaluate the influence of roundabouts on pedestrian safety and then to identify design elements that have such a high potential for traffic safety. At last, measures and treatments that can be taken in the roundabouts desi…
Road safety audit effectiveness at urban junctions
2002
In accordance with the Road Safety National Plan recently adopted in Italy and the initiatives subsequently undertaken by the National Infrastructure and Transport Department, this paper contains proposals for implementing an urban road safety audit in Italy, Our research will aim at evaluating the possible effects of such a practice. Our more specific aim is to determine the real or potential risk on roads by examining road infrastructure and observing road user behaviour in the absence of accident data. Four urban junctions, situated on one of the main thoroughfares of urban traffic in Palermo, were studied and a comparison was made between the data obtained by observing road user behavio…
A markovian model as a tool for optimization of maintenance planning on the railway lines
2008
This paper is designed to develop a procedure which defines a planning criterion for railway superstructure maintenance by means of Markov decision processes. This methodology allows to formulate a specific policy π which carries out the best configuration of budget allocation (min. Ф), and at the same time to guarantee the highest efficiency level in the railway superstructure. Thanks to the dynamic programming technique applied to decision processes, the report has examined the possibility of establishing the best management policy in order to maintain adequate safety levels of implementation and quality speed levels, in the presence of budget constraints, thus optimizing the available re…
Road safety for the elder pedestrian in urban contexts - L'insicurezza per i pedoni anziani in ambito urbano
2011
Accidents involving elderly pedestrians are an important statistics on accidents due to vehicular traffic. So many researches investigated loss of safety of the elderly. The transition from work to quiescence period changes individuals’ lives and their concept of mobility, but car use is still prevalent during some years. Then the elderly significantly change their way of moving, preferring to walking. Over the years they become more and more fragile and they see the decline of their physical, sensory and cognitive faculties, so their safety has to lead urban Administrations to find practical solutions to improve movement and comfort of these urban users. This study aims to explore possible…
La sicurezza dei ciclisti: valutazione dei percorsi ciclabili della città di Palermo
2013
The safety of cyclists: evaluation of cycle paths in the city of Palermo Some Italian cities have developed a growing interest in the development of cycling and they are equipped with efficient network of bicycle paths. Palermo has a high potential for increasing the use of the bicycle, for both orographic characteristics of its urban center both for the highly favorable climatic conditions. Unfortunately, a lack of integration between the urban and the transport system, generated infrastructures in urban areas, which for lack of space does not offer users a high level of service in terms of comfort and safety. These conditions don’t have certainly encouraged the development of an active cy…