Celal Bayar University

About: Celal Bayar University is a education organization based out in Magnesia ad Sipylum, Turkey. It is known for research contribution in the topics: Population & Heat transfer. The organization has 2960 authors who have published 6024 publications receiving 100646 citations.

Analyses of FDI determinants in developing countries

Abstract: Purpose – The purpose of this paper is to investigate the best determinants of foreign direct investment (FDI) in developing countries.Design/methodology/approach – This paper investigates whether FDI determinants affect FDI based on both a panel of data (FMOLS‐fully modified OLS) and cross‐section SUR (seemingly unrelated regression) for 24 developing countries, over the period 1983‐2005 for FMOLS and 1976‐2005 for cross‐section SUR.Findings – The interaction of FDI with some FDI determinants have a strong positive effect on economic progress in developing countries, while the interaction of FDI with the total debt service/GDP and inflation have a negative impact. The most important determinant of FDI is the communication variable.Research limitations/implications – The limitations of the study are based on the development of data set which could be found uninterrupted for 30 years in 24 developing countries.Originality/value – The main objective of this study is to define the main FDI determinants that ...

A comparison of conventional and pulsed radiofrequency denervation in the treatment of chronic facet joint pain.

Abstract: Objectives The goal of this study was to compare the effects of conventional radiofrequency (CRF) and pulsed RF (PRF) denervation to medial branches of dorsal rami in the treatment of facet joint pain. Methods The patients greater than 17-year old, with continuous low back pain with or without radiating pain with focal tenderness over the facet joints, pain on hyperextension, absence of neurologic defect, unresponsiveness to conservative treatment, no radicular syndrome, and no indication for low back surgery were included in the study. Local anesthetic was applied in the control group (n=20), whereas 80 degrees C CRF were applied in the CRF (n=20) and 2 Hz PRF were applied in the PRF group (n=20). Pain relief was evaluated by visual analog scale (VAS) and Oswestry Disability Index (ODI) at preprocedure, at procedure, at 6 months and 1 year after the procedure. Reduction in analgesic usage, patients' satisfaction, and complications were assessed. Results Mean preprocedural VAS and ODI scores were higher than postprocedural scores in all groups. Both VAS and ODI scores of PRF and CRF groups were lower than the score of the control group at the postprocedural evaluation. Although decrease the pain score was maintained in the CRF group at 6 months and 1-year period, this decrease discontinued in the PRF group at the follow-up periods. The number of patients not using analgesics and patient satisfaction were highest in CRF group. Discussion PRF and CRF are effective and safe alternatives in the treatment of facet joint pain but PRF is not as long lasting as CRF.

Determination of heavy metals in fish, water and sediments of avsar dam lake in turkey

Abstract: In the present study, some heavy metals (Cd, Cr, Cu, Fe, Ni and Pb) were seasonally determined in water, sediment and some tissues of Cyprinus carpio from Avsar Dam Lake, which is an important water source for irrigation and drinking in Turkey. Heavy metal levels in water, sediment and fish samples were analyzed by inductively coupled plasma spectroscopy (ICP/AES). The obtained results showed that the average values of Fe in water samples were higher than the respective reference values for fresh water. Results for levels in water were compared with national and international water quality guidelines, as well as literature data reported for the lakes. The analysis of heavy metals in sediments indicated that among the six heavy metals tested, Fe was maximally accumulated, followed by Ni, Cu, Cr, Pb and Cd. Heavy metal concentrations were found to decrease in sequence of the Cyprinus carpio samples, in the muscle and stomach-intestine as Fe > Cu > Pb> Ni > Cr > Cd; in the gill, heart and liver as Fe > Cu > Ni > Pb > Cr > Cd and in the air sac as Fe > Cu > Ni > Pb > Cd >Cr. In the fish samples, cadmium, chromium, nickel and lead concentrations exceeded the tolerable values provided by international institutions.