The absence of species in polluted sediments does not necessarily imply exclusion due to toxicity. Other factors, like for instance food availability and oxygen content, could also partly cause their absence. Hence, knowledge of the (combinations of) factors acting on individual organisms is essential in order to understand how populations can persist in polluted sediments. In this study specie...

One of the important consequences of the climatic changes is the potential danger of increasing the concentrations of some pollutants, which may cause damages to humans, animals and plants. Therefore, it is worthwhile to study carefully the impact of future climate changes on the high pollution levels. The major topic of the discussion in this paper is the increase of some ozone levels in Bulga...

1389-1286/$ see front matter Published by Elsevie doi:10.1016/j.comnet.2011.02.006 ⇑ Corresponding author. Tel.: +1 505 6670176; fa E-mail address: [email protected] (G. Yan). 1 Los Alamos National Laboratory Publication No. L 2 This work was done when Duc T. Ha was wo National Laboratory. Botnets have emerged as one of the most severe cyber-threats in recent years. To evade detection and improve ...

In the bacterial processes involved in the mitigation of nitrogen pollution, an adequately high carbon-to-nitrogen (C : N) ratio is key to sustain denitrification. We evaluated three natural materials (woodchips, barley grains, and peanut shells) as carbon sources for low C : N wastewater. The amount of organic matter released from these materials to aqueous media was evaluated, as well as thei...

OBJECTIVE To explore the relationship between weather phenomena and pollution levels and daily hospital admissions (as an approximation to morbidity patterns) in Hong Kong Special Administrative Region (SAR), China, in 1998-2009. METHODS Generalized additive models and lag models were constructed with data from official sources on hospital admissions and on mean daily temperature, mean daily ...

e observational evidence indicates that recent regional changes in climate, particularly temperature increases, have already a ected a diverse set of physical and biological systems in many parts of the world. Allergens patterns are also changing in response to climate change and air pollution can modify the allergenic potential of pollen grains especially in the presence of speci c weather con...

Objective This paper describes analyses of health seeking behaviors from two surveillance datastreams: Poison Control Center (PCC) calls and Emergency Department (ED) visit records. These analyses were conducted in order to quantify behaviors following the development of symptoms after water contamination exposure and to understand the motivation, decision-making and timing behind healthcare se...

Introduction A number of severe soil and air pollution cases around municipal and industrial waste incinerators have recently been found in Japan. It is tme that the amount of waste incinerated in Japan is very high compared with other countries; however, it must be clarified whether the incinerators are the sole cause ofthe present dioxin pollution problem. In this study, the mass balance of d...

It has been widely accepted that there is a close relationship between the land use type and water quality. There have been some researches on this relationship from the perspective of the spatial configuration of land use in recent years. This study aims to analyze the influence of various land use types on the water quality within the Chaohu Lake Basin based on the water quality monitoring da...

A simple, rapid and sensitive spectrophotometric method has been developed for the determination of trace amounts of copper in tap water, polluted water, human hair and alloys. The proposed method is based on the reaction of copper with potassium iodide in acidic medium to liberate iodine, which bleaches violet color of azure B and the absorbance is measured at 644nm. This decrease in absorbanc...