19 research outputs found

    AGE AND GROWTH OF BLACK-BELLIED ANGLERFISH Lophius budegassa (Spinola, 1807) FROM THE CENTRAL AEGEAN SEA, TURKEY

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    U svrhu utvrđivanja dobi i rasta, ukupno 558 primjeraka grdobine žutke Lophius budegassa (Spinola, 1807) je uzorkovano povlačnim ribarskim mrežama pri komercijalnom ribolovu u srednjem Egejskom moru u razdoblju od rujna 2017. do kolovoza 2018. Dob se određivala brojanjem prstena rasta na poprečnom presjeku illiciuma (modificirane prve dorzalne peraje). Očitavanjem illiciuma jedinke su kategorizirane u dobne skupine od II-XI. Vrijednosti totalne dužine i mase su se kretale između 12,0 – 65,0 cm, odnosno 24,5 – 4682,0 g. Von Bertalanffy parametri rasta procijenjeni su za mužjake, ženke i kombinirani spol L. budegassa. Također, rezultati su uspoređeni s prethodnim istraživanjima.A total of 558 specimens of black-bellied anglerfish Lophius budegassa(Spinola, 1807) were collected by the vessels engaged in commercial trawl fishing in the Central Aegean Sea between September 2017 and August 2018 in order to determine age and growth. Ageing was based on growth ring counts of transverse sections of the illicium (first ray of the dorsal fin). By reading the illicium, individuals were found within II-XI age groups. Total lengths and weights ranged between 12.0 – 65.0 cm and 24.5 – 4682.0 g, respectively. Von Bertalanffy growth parameters were estimated for males, females and combined sexes of L. budegassa. The results are compared with previous studies

    Wavelength Tunability of Ion-bombardment Induced Ripples on Sapphire

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    A study of ripple formation on sapphire surfaces by 300-2000 eV Ar+ ion bombardment is presented. Surface characterization by in-situ synchrotron grazing incidence small angle x-ray scattering and ex-situ atomic force microscopy is performed in order to study the wavelength of ripples formed on sapphire (0001) surfaces. We find that the wavelength can be varied over a remarkably wide range-nearly two orders of magnitude-by changing the ion incidence angle. Within the linear theory regime, the ion induced viscous flow smoothing mechanism explains the general trends of the ripple wavelength at low temperature and incidence angles larger than 30. In this model, relaxation is confined to a few-nm thick damaged surface layer. The behavior at high temperature suggests relaxation by surface diffusion. However, strong smoothing is inferred from the observed ripple wavelength near normal incidence, which is not consistent with either surface diffusion or viscous flow relaxation.Comment: Revtex4, 19 pages, 10 figures with JPEG forma

    Age and Growth of Black-Bellied Anglerfish Lophius budegassa (Spinola, 1807) from the Central Aegean Sea, Turkey

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    A total of 558 specimens of black-bellied anglerfish Lophius budegassa (Spinola, 1807) were collected by the vessels engaged in commercial trawl fishing in the Central Aegean Sea between September 2017 and August 2018 in order to determine age and growth. Ageing was based on growth ring counts of transverse sections of the illicium (first ray of the dorsal fin). By reading the illicium, individuals were found within II-XI age groups. Total lengths and weights ranged between 12.0 – 65.0 cm and 24.5 – 4682.0 g, respectively. Von Bertalanffy growth parameters were estimated for males, females and combined sexes of L. budegassa. The results are compared with previous studies

    Assessment of sociodemographic factors and socio-economic status affecting the coverage of compulsory and private immunization services in Istanbul, Turkey

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    Objectives: The primary objective of this study was to determine the coverage of the Expanded Programme of Immunization (EPI) of the Ministry of Health and the coverage of private vaccines in the Umraniye Health District in order to establish approaches for improving vaccination services. Other objectives were to define the areas that present higher risks for non-vaccination and to determine the factors that influence vaccination coverage. Methods: A '30X7' cluster sampling design was adopted as the sampling method. Thirty streets were selected at random from each healthcare region. Sociodemographic and socio-economic characteristics of the population, utilization of vaccination services and vaccination status of children under the age of 5 years were determined by face-to-face interviews. Odds ratios for the sociodemographic and socio-economic characteristics, health centre region and inner country immigration were assessed as possible related factors with the vaccination coverage rates for children under 5 years and under 1 year using the backward elimination method in logistic regression. Results: Vaccination coverage was as follows: hepatitis B third dose, 84.6%; Bacitle Calmette-Guerin, 94.8%; diphtheria, tetanus, pertussis (DPT) third dose, 90.1%; oral polio virus (OPV) third dose, 90.0%; measles, 88.7%; DPT booster dose, 79.1%; OPV booster dose, 79.0%; measles, mumps, rubella (MMR), 13.3%; haemophilus influenza type b (Hib), 9.3%; and Varicella vaccine, 3.3%. The full vaccination rates for children under 5 years and under 1 year were 68.3 and 79.5%, respectively. Higher socioeconomic status was associated with a higher rate of full vaccination and private vaccination for children under 5 years of age. Conclusions: Full vaccination rates for children aged less than 1 year and less than 5 years were higher in our district than in Istanbul. However, we did not meet the EPI aims for any of the vaccines, and differences were observed in vaccination coverage rates between different socio-economic groups in the district. Therefore, an intervention programme should be considered to achieve the EPI's goals, particularly in socio-economically disadvantaged groups. Also, the coverage of private vaccination (MMR, Hib, Varicella) is tow and more children from higher socioeconomic groups receive these vaccines. (c) 2005 The Royal Institute of Public Health. Published by Elsevier Ltd. ALL rights reserved

    Lucilia sericata Larval Secretions Stimulating Wound Healing Effects on Rat Dermal Fibroblast Cells

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    The extract from larval Lucilia sericata is used clinically to promote wound healing and tissue regeneration. However, its effect and underlying mechanisms on fibroblast cells, which are involved in the wound healing process, are still poorly understood. This study aimed to examine the effects of larval secretions on dermal fibroblast activity and gene expression and to evaluate the wound healing potential of their major components. Primary rat fibroblasts were cultured and treated with larval secretions. Following the treatment, the cells were used to extract RNA for gene profiling. In addition, migration to the injury site was studied with the scratch healing assay. Our results showed that larval secretion accelerated the migration of the fibroblasts compared to the control cells and that several mRNAs were differentially expressed during a period of 72 h incubation. Additionally, we analyzed the chemical composition of larval secretions and showed that fumaric acid, ferulic acid, and p-coumaric acid, which were selected and identified for their major components, enhanced the migration of the fibroblasts. Therefore, these results indicate that L. sericata larval secretions could modulate the mRNA expression of some wound healing-related genes of the fibroblasts and contain the effective components for wound healing
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