Ondokuzmays University

Samsun, Turkey

Ondokuzmays University

Samsun, Turkey
Time filter
Source Type

PubMed | OndokuzMays University, Ondokuz Mayis University and Medical Park Hospital
Type: | Journal: Seizure | Year: 2015

To compare semiological characteristics, precipitating stress factors and psychiatric diagnoses of girls and boys with psychogenic nonepileptic seizures (PNESs).We retrospectively reviewed medical records of children diagnosed with PNES and who also underwent psychiatric evaluation. Sixty-two children (44 girls, 18 boys), aged 11-18 years (mean age 14.19 1.96 years) were included. Diagnosis of PNES was established by any of the following: (1) observation of the seizure by a neurologist and routine EEG, (2) evaluation of amateur video records of the typical seizure and routine EEG, or (3) video-EEG monitoring. Psychiatric examinations of patients were performed using the Schedule for Affective Disorders and Schizophrenia for School Age Children-Present and Lifetime Version (KSADS-PL).Tremor was the most prevalent ictal motor sign in both girls and boys. Atonic falls and longer episodes were significantly more frequent in girls than boys. Tonic-clonic-like movements of the extremities were significantly more prevalent in boys than girls. No gender-specific differences were observed in the rates of semiological types. Academic underachievement was the most prevalent precipitating stressor for boys, and was significantly more prevalent in boys than girls. The rate of major depression was significantly higher in girls than boys. The most prominent diagnosis in boys was attention deficit/hyperactivity disorder, and this was significantly more prevalent than in girls.PNES in males of juvenile age may be a distinct entity from that in girls with different semiological and psychogenic correlates. Consideration of these gender-related differences may be beneficial for the early recognition and treatment of PNES.

PubMed | Hitit University, Pamukkale University, Ondokuzmays University, Kolan International Hospital and Mustafa Kemal University
Type: | Journal: Journal of back and musculoskeletal rehabilitation | Year: 2016

Shoulder pain is frequently observed in haemodialysis patients.To compare haemodialysis patients with or without shoulder pain in terms of shoulder motion ranges, 2 microglobulin levels and magnetic resonance imaging findings.Forty-three patients undergoing dialysis were enrolled, of which 23 patients had explicit shoulder pain at night, which appeared during dialysis. Range of joint motion and impingement tests were evaluated. 2 microglobulin value was recorded. MRI was used to evaluate rotator cuff tendons for thickness, homogeneity, integrity and presence of effusion.Ranges of motion were significantly lower in the painful shoulder group. Supraspinatus tendon thickness and the number of areas with effusion were higher in the painful group. There was a positive correlation between the 2 microglobulin level and supraspinatus (r:0.352 p< 0.05) and subscapular (r:0.454 p< 0.05) tendon thicknesses. While effusion areas and pain (r:0.351 p< 0.05) showed positive correlation, there was a negative correlation between pain and shoulder motion ranges.Shoulder pain in dialysis patients can be related with tendon thickness and effusion. While the 2 microglobulin level affects tendon thickness, it has no relation to pain and movement constraint.

PubMed | Hitit University, Pamukkale University, Ondokuzmays University and Edirne Training and Research Hospital
Type: Journal Article | Journal: Renal failure | Year: 2016

We aimed to determine the incidence of osteoporosis in hemodialysis patients, to evaluate the differences due to arteriovenous fistula on bone mineral density (BMD) and to investigate whether usage of arm with fistula has an effect on BMD. In this cross-sectional study, 96 patients with chronic renal disease undergone to dialysis were included. Place of fistula (radial and brachial) and dominant hand were recorded. All patients were asked to complete Likerts scale in order to determine the frequency of their usage of arm with fistula. Patients were assigned in two groups: age >51 and<50years. Age-matched control group included 60 subjects. BMD measurements were done on lumbar vertebra, femur and both forearms. BMD measurement of proximal femur and total radius were significantly lower in patients >50years compared to healthy controls and bone density measurement of lumbar vertebra, proximal femur, 1/3 distal and total radius were significantly lower in patients <50years compared to healthy controls (p<0.05). BMD measurement was significantly lower in arms with fistula, especially with radial fistula, compared to both arms without fistula and healthy controls (p<0.05). When all patients were evaluated, BMD scores were lowering by increasing age, duration of dialysis and fistula and decreasing usage of arm with fistula. BMD in hemodialysis patients is lower than normal population. BMD of arm with fistula is lower than arm without fistula and healthy controls. Both radial and brachial fistula affect negatively ipsilateral BMD. Movement of arm with fistula has positive effects on BMD.

Al-Obaidi F.N.,The University of Mustansiriyah | Sari H.,Gaziosmanpaşa University | MacIt M.,Ondokuzmays University
Journal of Chemical and Engineering Data | Year: 2010

A potentiometic study has been carried out to reveal the coordination properties of 1,2-bis(4-benzylpiperidine)glyoxime (BPG), via its reaction with certain transition metal ions, Ni 2+, Cu 2+, and Zn 2+, and to determine the stability constants of the complexes formed. The experimental conditions were arranged to achieve all of the measurements and coordination in aqueous solution (mixed ethyl alcohol (10 %) and water (90 %)) at (25 ± 0.1) °C and an ionic background of 0.1 mol·dm -3 NaCl. The overall stability constants log β n values of all species formed in solution together with the dissociation constants of the ligand were calculated by use of the SUPERQUAD computer program. The dissociation constants of the ligand BPG are 2.830, 6.066, 6.966, and 9.510. The chemical species present in the solution under our experimental conditions were demonstrated by the use of speciation diagrams. © 2010 American Chemical Society.

Both electrical conductivity of soil saturation paste extract (ECe) and plant water consumption (ET) should be considered for assessing crop yield tolerances to salinity since ET decreases by increased salinity effects. In this study, conducted in a greenhouse under controlled conditions, it was afforded to use soil salinity and water consumption for the purpose of assessing plant responses to salinity. Additionally, growth and yield of green long pepper (Capsicum annuum L. Demre) under different saline and water regime conditions were examined. For these purposes, the green long pepper were exposed to six water salinity levels (S1= 0.65; S2= 2.0; S3= 3.0; S4= 4.0; S5= 5.0 and S6= 7.0 dS m-1) and four water application rates (IR1= 1.43; IR2= 1.0; IR3= 0.75 and IR4= 0.50 times of depleted water). The yield response factor (Ky), is 1.56 for salinity stress and 1.66 for water stress. Water consumption of the plant exponentially decreased (ET= 0.83×ECe -0.17) whereas relative fruit yield decreased linearly (7.03%) for unit increase in soil salinity after a threshold value of 1.20 dS m-1. A stronger three-dimensional relation was found among relative yield, relative water consumption and soil salinity (R2= 0.94). Using water consumption as a second factor in evaluation of plant response to salinity may be useful for reflecting effects of different climatic conditions. © Ankara Üniversitesi Ziraat Fakültesi.

Aydn Temel F.,Giresun University | Kuleyin A.,Ondokuzmays University
Desalination and Water Treatment | Year: 2016

The scope of this study is to research the removal of NH4-N from landfill leachate using natural Turkish zeolite by adsorption process. The effects of pH (2–8), contact time (5–1,440 min), adsorbent dosage (30–150 g L−1), agitation speed (100–300 rpm), initial concentration (263.2–1,363.6 mg L−1), and particle size (10–65 mesh) were examined on the adsorption process. The optimum conditions in the adsorption process were established as follows: pH (its pH value of leachate), 60 min of contact time, 100 g L−1 of adsorbent dosage, 200 rpm of agitation speed, 263.2 mg L−1 of initial concentration, and −20 + 35 mesh of particle size. The adsorption kinetics and isotherms were tested to understand the adsorption mechanism using three kinetic models, i.e. Elovich, intraparticle diffusion, the pseudo-second-order reaction kinetic models, and four isotherm models, i.e. Dubinin–Radushkevich, Langmuir, Tempkin, and Freundlich isotherm models. Correlation coefficients, kinetic, and isotherm parameters were calculated. It was shown that the best conformity kinetic model was the pseudo-second-order reaction kinetic model (R2 > 0.99) for the present study. According to the results obtained from isotherms experiments, the adsorption equilibrium was defined well by the Langmuir and Tempkin isotherm model for NH4-N adsorption onto zeolite. The thermodynamic parameters were also detected. The values of Gibbs free energy (ΔG°), enthalpy (ΔH°), and entropy of activation (ΔS°) were 5.7113–6.5018 kJ mol−1, −8.5415, and 8.8209 J mol−1 K−1, respectively. They were showed that the NH4-N adsorption process onto zeolite was an exothermic physical adsorption process, randomness, and non spontaneous in the temperature range studied (25–60°C). Results indicate that zeolite is the most efficient cation exchanger for NH4-N removal from landfill leachate. © 2016 Balaban Desalination Publications. All rights reserved.

Kalfaoglu E.,OndokuzMays University | Karabulut B.,OndokuzMays University
Journal of Magnetism and Magnetic Materials | Year: 2012

The molecular orbital coefficients and the EPR parameters of trisodium citrate dihydrate, sodium hydrogen oxalate monohydrate, potassium d-gluconate monohydrate and L-Alanine vanadyl complexes are calculated theoretically. Two d-d transition spectra and EPR parameters for the VO 2 complex are calculated theoretically by using crystal-field theory. The calculated g and A paramaters have indicated that paramagnetic center is axially symmetric. Having the relations of g∥〈 g⊥〈 ge and A∥〉 A⊥ for VO 2 ions, it can be concluded that VO 2 ions are located in distorted octahedral sites (C 4v) elongated along the z-axis and the ground state of the paramagnetic electron is d xy. © 2011 Elsevier B.V. All rights reserved.

Andac O.,Ondokuzmays University | Yolcu Z.,Ondokuzmays University | Buyukgungor O.,Ondokuzmays University
Acta Crystallographica Section E: Structure Reports Online | Year: 2010

The crystal structure of the title compound, [Co(CO3)(C 12H8N2)2]NO3· H2O, consists of CoIII complex cations, nitrate anions and uncoordinated water mol-ecules. The CoIII cation is chelated by a carbonate anion and two phenanthroline ligands in a distorted octa-hedral coordination geometry. A three-dimensional supra-molecular structure is formed by O-H⋯O and C-H⋯O hydrogen bonding, C-H⋯π and aromatic π-π stacking [centroid-centroid distance = 3.995 (1)Å] inter-actions.

PubMed | Ondokuzmays University
Type: Journal Article | Journal: Turkish neurosurgery | Year: 2015

The superficial temporal artery is one of the main terminal branches of the external carotid artery. This artery ascends through the lateralposterior margin of the zygomatic arch to reach the temporal region of the scalp. The superficial temporal artery divides its frontal and parietal branches around the zygomatic arch.The raw data of the Three-dimensional Computerized Tomography Angiography (3D-CTA) were transferred to computer and recorded in a software program. This software program created the three-dimensional images of the superficial temporal artery using these transferred raw data with volume rendering technique.Fifteen cases (5 female and 10 male, mean age 54.26 12.35 years) with intracranial aneurysm were evaluated in terms of the type, location and dimensions of the fusiform enlargements. Fusiform enlargement was bilateral in eleven of the cases. Remaining four cases have unilateral fusiform enlargement of the superficial temporal artery.Fusiform enlargement of the superficial temporal artery may be seen in the cases with intracranial aneurysms. 3D-CTA should be carefully evaluated in the demonstration of extracranial-intracranial vascular pathologies.

Kaynar A.,Ondokuz Mayis University | Kelsaka E.,Ondokuz Mayis University | Karakaya D.,Ondokuz Mayis University | Sungur M.,Ondokuzmays University | And 4 more authors.
Journal of Cardiothoracic and Vascular Anesthesia | Year: 2011

Objective The present study aimed to compare 2 different doses of remifentanil infusion on hemodynamics, recovery period, and complications in children undergoing diagnostic pediatric cardiac catheterization. Design A prospective study. Setting A university hospital. Participants Children undergoing diagnostic cardiac catheterization (n = 60). Interventions Children (2-12 years of age) scheduled for elective diagnostic cardiac catheterization under sedation were included in this study. The patients were ssigned randomly to 2 groups as follows: patients in group 1 (n = 30) received a remifentanil infusion of 0.1 μg/kg/min, and patients in group 2 (n = 30) received a remifentanil infusion of 0.2 μg/kg/min. Heart rate (HR), systolic and diastolic blood pressures (BPs), oxygen saturation (SpO 2), respiratory rate (RR), sedation, and recovery scores were recorded. Measurements and Main Results There were no significant differences between the groups in terms of systolic and diastolic BPs, HR, SpO 2, and RR during the study period. Additional drugs were required for 15 children in group 1; however, 27 patients maintained a satisfactory level of sedation with the 0.2-μg/kg/min remifentanil infusion. The time to achieve a recovery score of <5 was significantly shorter in group 2 than in group 1 (4.1 ± 0.3 minutes v 6.8 ± 0.8 minutes). No postoperative complications were reported in either group. Conclusion After oral midazolam premedication and local prilocaine infiltration, 0.2 μg/kg/min of remifentanil provided adequate sedation without any hemodynamic compromise during pediatric diagnostic cardiac catheterization. © 2011 Elsevier Inc.

Loading Ondokuzmays University collaborators
Loading Ondokuzmays University collaborators