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101.
The purpose of this paper is to reflect on accident causation models and accident investigation methods. Theories on accident causation and the modelling of accident mechanisms, as well as a number of methods for accident investigation have been developed and described in the literature. The evolution of accident causation models over time shows a shift from the sequence of events to the representation of the whole system. Respectively, the evolution of accident investigation methods over time reveals a gradual shift from searching for a single immediate cause, to the recognition of multiple causes. In order to evaluate the accident investigation methods, specific plausible requirements were established in order to verify that a specific accident investigation method fulfils the principles of a specific accident causation model or give evidence to the degree of alignment between them. Since different models approach accident causation in different ways, methods linked to these models provide fragmentary information regarding the accident. It is therefore expected that using a combination of model-method pairs could provide a more reliable platform for accident analysis. 相似文献
102.
Hafida Bouloiz Emmanuel Garbolino Mohamed Tkiouat 《Journal of Loss Prevention in the Process Industries》2010,23(2):312-322
This paper proposes a new systemic modeling approach using the unified modeling language (UML) as an operational tool to model a complex industrial system and analyzes its risks. This approach is presented as a modeling process divided into three phases corresponding to functional analysis, structural analysis and risk analysis. This study aims to formalize the interactions within an industrial system and to identify the abnormal situations which could generate risks. The application of this approach is demonstrated with an example of a storage unit of chemical products located in Morocco. This approach provides a comprehensive view that facilitates the understanding of the organization of an industrial system and leads to more effective analysis of its safety. 相似文献
103.
In this paper, the utilisation of zeolites synthesised from fly ash (FA) and related co-disposal filtrates as low-cost adsorbent material were investigated. When raw FA and co-disposal filtrates were subjected to alkaline hydrothermal zeolite synthesis, the zeolites faujasite, sodalite and zeolite A were formed. The synthesised zeolites were explored to establish its ability to remove lead and mercury ions from aqueous solution in batch experiments, to which various dosages of the synthesised zeolites were added. The test results indicated that when increasing synthesised zeolite dosages of 5-20 g/L were added to the acid mine drainage (AMD) wastewater, the concentrations of lead and mercury in the wastewater were reduced accordingly. The lead concentrations were reduced from 3.23 to 0.38 and 0.17 microg/kg, respectively, at an average pH of 4.5, after the addition of raw FA zeolite and co-disposal filtrate zeolite to the AMD wastewater. On the other hand, the mercury concentration was reduced from 0.47 to 0.17 microg/kg at pH=4.5 when increasing amounts of co-disposal filtrate zeolite were added to the wastewater. The experimental results had shown that the zeolites synthesised from the co-disposal filtrates were effective in reducing the lead and mercury concentrations in the AMD wastewater by 95% and 30%, respectively. 相似文献
104.
105.
This paper makes a proposition that Epworth's current housing management policies, regulations and practices do not promote easy access to formal standard housing and secure tenure in peri-urban and urban areas for low-income groups. In constructing this paper, both qualitative and quantitative methodologies were used. The qualitative methods adopted include key informant interviews, observations of the environmental aspects of the study area and documentary analysis of secondary data housed in the local board (Epworth Local Board) offices. The major findings demonstrate the reasons for high levels of squatting in Epworth, the local board's housing and development control policy, the relationship between poverty and informal settlements, the informal settlers' capacity to meet the costs of planned and serviced stands and policy options for both the central government and the local board which can be adopted to alleviate poverty in informal settlements. Evidence on the ground points to the fact that perpetuated animosity among groups in a settlement hinders the growth and development of that place. Epworth is a victim of disharmony of the groups residing there. It is the group dynamics that are very influential in making or breaking development in a place. The government official position on Epworth in this study stands unconvincing regarding the jeopardy of bad stewardship by the so-called responsible authority. 相似文献
106.
Oluyinka Olutayo Abiodun Oke Emmanuel Anuoluwapo Oyelude Emmanuel Olajide Abugri James Raheem Saheed Abiola 《Journal of Material Cycles and Waste Management》2022,24(6):2089-2107
Journal of Material Cycles and Waste Management - The generation of biomass wastes is a huge concern as they have to be properly managed to ensure environmental wellbeing. This article examined... 相似文献
107.
Van Opstal Natalia Verónica Seehaus Mariela Soledad Gabioud Emmanuel Adrian Wilson Marcelo German Galizzi Flavio José Pighini Ramiro Joaquin Repetti Maria Rosa Regaldo Luciana María Gagneten Ana María Sasal María Carolina 《Environmental science and pollution research international》2022,29(38):57395-57411
Environmental Science and Pollution Research - Land use changes have led to the degradation of multiple ecosystem services and affected the quality of aquatic ecosystems. The aims of this study... 相似文献
108.
Dromard Charlotte R. Allenou Jean-Pierre Tapie Nathalie Budzinski Hélène Cimmaterra Nicolas De Rock Pauline Arkam Salim Cordonnier Sébastien Gonzalez Jean-Louis Bouchon-Navaro Yolande Bouchon Claude Thouard Emmanuel 《Environmental science and pollution research international》2022,29(54):81546-81556
Environmental Science and Pollution Research - The present study, conducted in the Galion Bay in Martinique, aims to highlight the temporal and seasonal variations of chlordecone contamination (an... 相似文献
109.
Synodontis (Mochokidae, Siluriformes) is a freshwater catfish endemic to Africa. The 118 extant species are present in almost all hydrographic
basins. Some species are restricted to a single stream, whereas others have a vast distribution. Synodontis is known in the fossil record since the Miocene, and its history depends on the connections among African basins through
time. The identification of species in the fossil record is essential to reconstruct this historical pattern. Catfish pectoral
and dorsal spines are robust, they preserve well and they form most of the fossil remains for the genus Synodontis. Unfortunately, the criteria for the identification of extant Synodontis species are not applicable to fossil specimens. Here, we define 11 original morphological characters that permit to discriminate
four extant species from the Chad-Chari hydrographic system. Six of these characters are defined on pectoral spines and five
on dorsal spines. We then show that these characters can be used successfully for identifying fossil specimens. In particular,
we present a case study in which we identify Synodontis cf. schall and Brachysynodontis cf. batensoda in the hominid-bearing sector Toros-Menalla (Late Miocene, northern Chad). We show that spine anatomy can be a powerful tool
to recognise catfish species through time and thus to identify historical diversity pattern. 相似文献
110.
Nicolas Lecysyn Aurlia Dandrieux Frdric Heymes Pierre Slangen Laurent Munier Emmanuel Lapebie Christian Le Gallic Gilles Dusserre 《Journal of Loss Prevention in the Process Industries》2008,21(6):627-634
Since the events of September 11, 2001, the possibility of an intentional act targeting the chemical process industry has become realistic. It is, therefore, a great concern to be able to predict the immediate consequences of such an act. This study is intended to improve our knowledge about the sequence of events that occurs when a high-speed bullet (>1000 m s−1) penetrates a vessel filled with toxic liquid. We find that, prior to liquid ejection, several well-defined phases occur, including the phenomenon known as the “hydraulic ram.” This paper focuses on projectile–target interactions and explains how the decay of projectile velocity is related to the initial conditions of the target. 相似文献