Status of facilities for fire safety in hotels

This paper presents the results of a research work which analysed the status of fire precaution systems in hotels in Spain.Our field research involved visits to a total of 146 hotels during 2004. In order to examine the fire safety of these facilities we made use of the official checklist of the Spanish administrative body competent on the matter. The checklist monitors documentary and technical requirements as stated by the current fire protection regulations for buildings. As far as fire precaution systems are concerned, most of the defects detected had to do with either documentary issues (for example, absence of a technical installation project or certificates of compulsory maintenance contracts for the equipment) or technical issues, such as the absence of smoke detection and alarm devices, defective signage or difficult access to firefighting equipment (fire extinguishers and hydrants). Beach hotels present a higher safety level than city hotels. The lowest safety standards are found in isolated hotels, i.e., neither beach nor city hotels, usually in small towns or away from centres of population. Of all the hotels visited, the safety level was also higher in those subject to the regulations inspiring the checklist.     

Communal roosting sites are potential ecological traps: experimental evidence in a Neotropical harvestman

Situations in which animals preferentially settle in low-quality habitat are referred to as ecological traps, and species that aggregate in response to conspecific cues, such as scent marks, that persist after the animals leave the area may be especially vulnerable. We tested this hypothesis on harvestmen (Prionostemma sp.) that roost communally in the rainforest understory. Based on evidence that these animals preferentially settle in sites marked with conspecific scent, we predicted that established aggregation sites would continue to attract new recruits even if the animals roosting there perished. To test this prediction, we simulated intense predation by repeatedly removing all individuals from 10 established roosts, and indeed, these sites continued to attract new harvestmen. A more likely reason for an established roost to become unsuitable is a loss of overstory canopy cover caused by treefalls. To investigate this scenario, without felling trees, we established 16 new communal roosts by translocating harvestmen into previously unused sites. Half the release sites were located in intact forest, and half were located in treefall gaps, but canopy cover had no significant effect on the recruitment rate. These results support the inference that communal roost sites are potential ecological traps for species that aggregate in response to conspecific scent.     

Fractionation of phosphorus biowastes: characterisation and environmental risk

Phosphorus (P) fertilizer is essential for food production and is a limiting factor in crop yields. However, the role of P in the eutrophication of surface water has long been recognised. During recent years, the input of P from agriculture to surface waters has increased and has been the focus for strategies aimed at mitigating diffuse P losses. As not all forms of P have the same availability, it is important to know the main forms of phosphorus in biowastes, and hence to develop fractionation schemes. The standards, measurements, and testing (SMT) procedure for phosphorus fractionation in freshwater sediments, developed within the framework of the Standards, Measurements, and Testing Program of the European Commission, was applied to 15 biowastes used frequently in agriculture, to obtain total P, inorganic and organic P, apatite P, and non-apatite inorganic P. The Hedley method was applied to determine the water-soluble phosphorus (WSP) in all the biowastes. In addition, the aluminium, calcium, and iron concentrations were quantified and related to the WSP. The results confirm the applicability of the SMT protocol to all kinds of waste usually applied in agriculture. The SMT protocol revealed the existence of large amounts of inorganic P and non-apatite inorganic P, the most-available forms of P for all the biowastes. The comparison of the data for total P (SMT protocol) and WSP (Huang protocol) does not show a good linear relationship between these parameters. Instead, the relationship between [aluminium+calcium+iron] and WSP is a better indication of the availability of P.     

Symptomatic profile and health‐related quality of life of persons affected by the Prestige catastrophe

This study analyses the impact of the Prestige oil spill on the mental health and the perception of physical health and functional capacity in the affected population. The sample comprised 926 residents from the section of the Spanish coast affected by the oil spill. The data was collected slightly more than one year after the accident. Scales referring to clinical symptoms (SCL‐36) and health‐related quality of life (SF‐36) were administered. The results suggest that individuals with higher degrees of exposure or residing in areas closest to the spill show lower levels of mental health in comparison to those with lower levels of exposure or living in areas farther away from the spill. This study also finds that women and fishermen tend to suffer more from the consequences of these types of disaster.     

Valuing diversity: a group‐value approach to understanding the importance of organizational efforts to support diversity

Using Leventhal's rules as well as the group‐value model of procedural justice, we first examined how the negative effects of perceived racial discrimination on procedural justice judgments can be attenuated by perceived organizational efforts to support diversity. Secondly, we examine how these effects ultimately impact affective commitment and organizational citizenship behavior. We found that employees who believe some individuals in the workplace are discriminating against them on the basis of race tend to report lower levels of procedural justice from the organization. However, this negative relationship was attenuated when employees perceived that their organization was making efforts to support diversity. Results suggest that individuals' perceptions of organizational efforts to support diversity can help restore perceptions of procedural justice for employees who experience racial discrimination at work. Improving procedural justice also positively impacts affective commitment and organizational citizenship behavior directed at the organization. Copyright © 2009 John Wiley & Sons, Ltd.     

Biodynamic modelling and the prediction of accumulated trace metal concentrations in the polychaete Arenicola marina

The use of biodynamic models to understand metal uptake directly from sediments by deposit-feeding organisms still represents a special challenge. In this study, accumulated concentrations of Cd, Zn and Ag predicted by biodynamic modelling in the lugworm Arenicola marina have been compared to measured concentrations in field populations in several UK estuaries. The biodynamic model predicted accumulated field Cd concentrations remarkably accurately, and predicted bioaccumulated Ag concentrations were in the range of those measured in lugworms collected from the field. For Zn the model showed less but still good comparability, accurately predicting Zn bioaccumulation in A. marina at high sediment concentrations but underestimating accumulated Zn in the worms from sites with low and intermediate levels of Zn sediment contamination. Therefore, it appears that the physiological parameters experimentally derived for A. marina are applicable to the conditions encountered in these environments and that the assumptions made in the model are plausible.     

Genotoxic biomonitoring of agricultural workers exposed to pesticides in the north of Sinaloa State, Mexico

Genotoxic damage was evaluated in 70 agricultural workers, 25 women and 45 men, exposed to pesticides in Las Grullas, Ahome, Sinaloa, Mexico, with an average of 7 years of exposure. The effect was detected through the sister chromatid exchanges (SCE) in lymphocytes of peripheral blood and micronuclei (MN) and other nuclear anomalies (NA) in buccal exfoliated cells. Also, the influence on cellular proliferation kinetics (CPK) was studied by means of the replication index (RI) and the cytotoxic effect was examined with the mitotic index (MI). The non-exposed group consisted of 70 other persons, 21 women and 47 men from the city of Los Mochis, Sinaloa, Mexico. Significant differences between the exposed and the non-exposed groups were observed in SCE, CPK, MI, MN and NA. Analysis of variance revealed that age, gender, smoking and alcohol consumption did not have a significant effect on genetic damage. However, there was a correlation between exposure time to pesticides and SCE frequency. These results could have been due to the exposure of workers to pesticides containing different chemical compounds. This study afforded valuable data to estimate the possible risk to health associated with pesticide exposure.     

The relation between the estimated dietary intake of PCDD/Fs and levels in blood in a Flemish population (50-65 years)

Dioxin-like activity was measured in the serum of 1425 Flemish men and women via the CALUX assay. The adults, aged between 50 and 65 years, participated in a large biomonitoring program, executed by the Flemish Center of Expertise for Environment and Health between 2002 and 2006. Within the context of this biomonitoring program also dietary intake of dioxin-like contaminants was assessed through a food frequency questionnaire. The relation between the estimated dietary intake and the dioxin-like activity in serum was evaluated using multivariate analyses: a logistic model was performed on the total population, while a linear regression analysis was done on the subsample with quantifiable dioxin activity levels in serum. Region, gender, age, BMI, smoking status, as well as dietary habits were entered in the model, with dioxin level as an outcome estimate. Both the logistic and linear model confirmed the contribution of dietary intake to the dioxin activity measured in serum. Also BMI and region were found to be associated with dioxin activity levels.     

Effect of an organic amendment on availability and bio-accessibility of some metals in soils of urban recreational areas

A composted biosolid from wastewater treatment was added to soils of two public parks of Sevilla, and successive samples were taken during one year. In one of the parks, a second addition of biosolid was carried out after the first year. The soil contents in metals (pseudo-total) and their plant-available and oral bio-accessible fractions were significantly altered when the soils were amended with biosolid. Increase of the bio-accessible metal contents represents a deterioration of the environmental quality of recreational areas, where hand-to-mouth transfer of pollutants to children is likely to occur, although part of the metals added might be leached by rainfall or irrigation. The limits established in several countries for metal contents of soils in recreational areas are often exceeded after application of the biosolid. A careful study of the metal contents of recycled wastes is thus recommended before being used for green area maintenance.     

The bioaccumulation and translocation of Fe,Zn, and Cu in species of mushrooms from <Emphasis Type="Italic">Russula</Emphasis> genus

Introduction  

Many previous studies revealed a high ability of mushrooms to accumulate heavy metals from environment. This paper concerns the capacity of some wild macromycetes belonging to Russula genus to accumulate heavy metals in natural condition of pH (between 6.5 and 6.8) and the pattern of metal translocation in the fruiting body.