The risk of red palm weevil Rhynchophorus ferrugineus (Olivier) (Coleoptera: Curculionidae) infestation on the native greek palm tree Phoenix theophrasti Greuter (Arecales: Arecaceae)
© Aristotle University of Thessaloniki (6/2009)
The red palm weevil (RPW), Rhynchophorus ferrugineus Olivier (Coleoptera: Curculionidae), the most important pest of palm trees in the world, has invaded during the last decade the Mediterranean basin where it caused severe damage to date palm cultivations as well as to ornamental palm trees. R. ferrugineus has been found in Greece, for the first time, in Hersonissos (Heraklion district, Crete) on November , 2005, infesting Phoenix canariensis.

Desorption of exogenous contaminants before determination of endogenous trace elements in human hair by flam and electrothermal atomic absorption spectrometry
© Aristotle University of Thessaloniki (6/2009)
Human hair has been accepted as a suitable biological sample for determination of trace elements entered the body in recent years. However, the results are reliable only if the experimental results are based on the elements deposited inside the hair and not adsorbed by it, in other words the endogenous elements. Trace metals present in the environment are adsorbed on the hair, exogenous elements and cause serious errors.

A CFD simulation study of VOC and formaldehyde indoor air pollution dispersion in an apartment as part of an indoor pollution management plan
© Aristotle University of Thessaloniki (6/2009)
This paper is a preliminary report of an indoor pollution case study in a complex of apartments as a part of an In Indoor Pollution Management Plan. It describes the calculation by CFD techniques and presents the predicted air flow and VOCs and Formaldehyde contaminant distribution in an apartment comprised of a full-scale kitchen opened to a living room, ventilated by an exhaust hood.

Effects of multiple stressors exposures on plant populations
© Aristotle University of Thessaloniki (6/2009)
The results of long-term field studies in the Bryansk region of Russia affected by the Chernobyl accident, and in the Semipalatinsk Test Site, Kazakhstan are discussed. Findings obtained clearly indicate that chronic low dose exposure appears to be an ecological factor creating preconditions for possible changes in the genetic structure of a population. Plant populations growing in areas with relatively low levels of pollution are characterized by the increased level of both cytogenetic disturbances and genetic diversity. Under conditions of chronic exposure in pine tree populations were developed seed descendants with significantly lower reproductive ability than in the reference population.

Comparative ecological quality assessment of olive oil mill effluents from three-phase and two-phase systems, treated for hydrogen production
© Aristotle University of Thessaloniki (6/2009)
By-products of a two-phase (olive oil mill solid waste - OMSW) and a three-phase (olive oil mill wastewater - OMW) olive oil mill process that were treated in an anaerobic fermentation system for hydrogen production, were evaluated by three bioassays: the zebrafish Danio rerio embryo test and two microbiotests, the Thamnotoxkit F (Thamnocephalus platyurus) and the Daphtoxkit FTM pulex (Daphnia pulex).

Acute toxicity of selected organophosphorus pesticides to the green unicellular marine alga Tetraselmis suecica
© Aristotle University of Thessaloniki (6/2009)
Acute toxicity of two organophosphorus pesticides, parathion methyl, parathion ethyl and its oxygen-analogue paraoxon ethyl, to a non target aquatic microorganism, the marine alga Tetraselmis suecica was studied.

Growth, accumulation and antioxidant response in juvenile carp (Cyprinus carpio) fed a selenium diet
© Aristotle University of Thessaloniki (6/2009)
The effects of two Se diets (HSe 1.0 mg kg-1 and LSe 0.25 mg kg-1) were investigated on growth, accumulation and antioxidant response in juveniles of Cyprinus carpio at 0, 30 and 60 days. HSe carp had slightly higher mean weight (W) values than LSe group at 60 days and the Fulton condition factor (K) indicated good fish health for both diet groups.

Metal bound to sediments bioavailability and sediment toxicity assessment using Arenicola marina in a field survey
© Aristotle University of Thessaloniki (6/2009)
In this research work, toxicity and bioavailability of metals Zn, Ni, Pb, Cd, Cu, Co and Hg bound to sediments from two sites (Guad1 and Guad2) of Guadalete River Estuary (SW Spain) were evaluated. Sediment physico-chemical characterization was undertaken and mortality and metal accumulation were determined in the species Arenicola marina after a 14 days in situ exposure in benthic cages.

Protection against Mg2+, Cu2+ and Zn2+ toxicity through siderophore in Frankia strains nodulating Hippöphae salicifolia D. Don
© Aristotle University of Thessaloniki (6/2009)
To study the role of siderophore in protecting the frankial strains from metal toxicity, Frankia strains were grown in presence of Mg2+, Cu2+ and Zn2+. Growth was observed up to (500 uM) Mg2+, (10 uM) Cu2+ and (10 uM) Zn2+ and maximum at 200 uM Mg2+, 1 uM Cu2+ and 1 uM Zn2+.

Growth inhibition and decrease of photosynthetic activity exhibited by selected Microcystis aeruginosa strains exposed to dodecylethyldimethyl-ammonium bromide
© Aristotle University of Thessaloniki (6/2009)
The growth inhibition and decrease of photosynthetic oxygen production, induced by dodecylethyldimethyl-ammonium bromide on selected Microcystis aeruginosa strains from Doñana Park, were analyzed. A concentration-dependent growth response was obtained for all strains with the presence of this quaternary ammonium compound in culture medium, and there are significant differences in the sensitive grade exhibited by each one of them.

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