Determination of benzo[alpha]pyrene in Turkish döner kebab samples cooked with charcoal or gas fire

peer-reviewedIn order to investigate the levels of the potent carcinogen benzo[a]pyrene (B(a)P), 40 samples of döner kebab were analysed. The samples tested included 20 cooked using a charcoal fire and 20 cooked using a gas fire. A liquid chromatographic method was developed using a fluorescence detector. The mean levels of B(a)P were found to be 24.2 (s.e. 0.84) g/kg for charcoal fire cooked meat samples and 5.7 (s.e. 3.48 g/kg) for gas fire cooked meat samples. Sixteen samples were found to be over the maximum level recommended by FAO/WHO (10 g/kg) and all of the samples exceeded the maximum tolerance level of the Turkish Food Codex (1 g/kg)

Fauna of Encyrtidae, parasitoids of coccids in Golcuk Natural Park

Είδη της οικογένειας Encyrtidae (Hymenoptera: Chalcidoidea), που παρασιτούν σε κοκκοειδή έντομα (Coccoidea), συλλέχθηκαν με παγίδα malaise στο φυσικό πάρκο Golcuk της Τουρκίας κατά την περίοδο Μάρτιος-Οκτώβριος 2009. Σαράντα τέσσερα είδη παρασιτοειδών της οικογένειας Encyrtidae που ανήκουν σε 24 γένη, καταγράφηκαν κατά τη διάρκεια της μελέτης. Δύο γένη και εννιά είδη είναι νέες καταγραφές για την εντομοπανίδα της Τουρκίας. Είκοσι οκτώ είδη αναγνωρίσθηκαν σε επίπεδο είδους και τα υπόλοιπα σε επίπεδο γένους ή μορφότυπου. Αυτή είναι η πρώτη προσπάθεια εκτίμησης της παρουσίας κοκκοειδών εντόμων σε μια περιοχή, χρησιμοποιώντας ως δείκτη τα παρασιτοειδή που συλλέγονται με τη βοήθεια παγίδας malaise.Species of Encyrtidae (Hymenoptera: Chalcidoidea), which are parasitoids of Coccoidea, were collected by malaise trap in Golcuk Natural Park during March-October, 2009. Forty-four species of encyrtids, belonging to 24 genera, were recorded during our survey. Two genera and nine species were found to represent new records for the Turkish fauna. Twenty-eight encyrtid species were identified to the species level and the remaining specimens to genus and morphospecies level. This was the first attempt at estimating the scale insect fauna using their parasitoids collected by malaise traps

Genotypic variation in growth and physiological responses of common bean (Phaseolus vulgaris L.) seedlings to flooding

Tolerance to flooding stress in root regions of some common bean genotypes (Beyaz Fasulye, Boncuk Sırık, Kökez, Oturak and Sırık) was investigated in terms of morphological and physiological. Plants were grown in a plant growth chamber at 26/18°C (day/night) temperature with RH 70% and 450 m-2 s-1 light intensity. Seedlings were exposed to flooding stress for 3 days when the plants had developed 3 to 4 true leaves. The results obtained showed that root dry weight and leaf area were reduced significantly by flooding treatment. The changes in leaf area showed differences between genotypes. It was found that flooding treatment did not affect the leaf relative water content (RWC) value. Flooding treatment decreased total chlorophyll content significantly. It was observed that some increases and decreases in the total sugar and lipid peroxidation (MDA) contents in root and leaf parts depend on genotypes and treatment. Beside that cell membrane injury and influence of flooding for each genotype were determined measuring the electrical conductivity. It was determined that the tolerance to flooding of five evaluated common bean genotypes, were change depending on root and leaf part. The results also showed that different genotypes responded differently to excess water in the soil, which could be linked to variation in growth and physiological responses. According to the evaluation, these results possibly suggest that ‘Boncuk Sırık’ ‘was relatively tolerant genotype, whereas ‘Sırık’ and ‘Kökez’ were determined as more sensitive genotypes.Key words: Phaseolus vulgaris L., common bean, excess water stress, flooding, lipid peroxidation, membrane injury, waterlogging

Flora planine Aydogdu (Denizli / Turska)

The floristic characteristics of Mt Aydogdu (Denizli, Turkey) are presented and the vascular plant species growing in the area are documented. The study was carried out between 2000– 2003, and 1112 vascular plant samples were collected. At the end of the study, 586 taxa (at specific and infraspecific ranks) belonging to 82 families and 314 genera were identified. Asteraceae (76 species), Fabaceae (65 species) and Brassicaceae (43 species) are the largest families and Trifolium L. (13 species), Ornithogalum L. (9 species) and Veronica L. (9 species) are the largest genera in the area. The phytogeographic elements and their proportion represented in the study area are as follows: Mediterranean 180 (30.7%), Irano-Turanian 43 (7.3%), Euro-Siberian 24 (4.0%) and multiregional or of unknown phytogeographic origin 339 (58.0%). The endemism rate of the area is 9.7%, less then one third of the mean endemism rate in Turkey.U radu su prikazane florističke osobine planine Aydogdu (Denizli, Turska) i zabilježene su vrste vaskularnih biljaka koje rastu na tom području. Istraživanje je provedeno između 2000. i 2003., a prikupljeno je 1112 uzoraka vaskularnih biljaka. Na kraju istraživanja determinirano je sveukupno 586 svojti (na razini vrste i podvrste) iz 82 porodice i 314 rodova. Najzastupljenije porodice su Asteraceae (76 vrsta), Fabaceae (65 vrsta) i Brassicaceae (43 vrste), te rodovi Trifolium L. (13 vrsta), Ornithogalum L. (9 vrsta) i Veronica L. (9 vrsta). Fitogeografski elementi i njihov omjer je sljedeći: Mediteranski 180 (30.7%), Irano-Turanski 43 (7.3%), Eurosibirski 24 (4.0%) i multiregionalni ili nepoznatog fitogeografskog porijekla 339 (58.0%). Stupanj endemizma ovog područja je 9.7%, manje od jedne trećine srednje vrijednosti endemizma za Tursku

Project PROMETHEUS: Design and Construction of a Radio Frequency Quadrupole at TAEK

The PROMETHEUS Project is ongoing for the design and development of a 4-vane radio frequency quadrupole (RFQ) together with its H+ ion source, a low energy beam transport (LEBT) line and diagnostics section. The main goal of the project is to achieve the acceleration of the low energy ions up to 1.5 MeV by an RFQ (352 MHz) shorter than 2 meter. A plasma ion source is being developed to produce a 20 keV, 1 mA H+ beam. Simulation results for ion source, transmission and beam dynamics are presented together with analytical studies performed with newly developed RFQ design code DEMIRCI. Simulation results shows that a beam transmission 99% could be achieved at 1.7 m downstream reaching an energy of 1.5 MeV. As the first phase an Aluminum RFQ prototype, the so-called cold model, will be built for low power RF characterization. In this contribution the status of the project, design considerations, simulation results, the various diagnostics techniques and RFQ manufacturing issues are discussed.Comment: 4 pages, 8 figures, Proceedings of the 2nd International Beam Instrumentation Conference 2013 (IBIC'13), 16-19 Sep 2013, WEPC02, p. 65