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Search Results: 1 - 10 of 1926 matches for " Murat Aksu "
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Prevalence of Restless Legs Syndrome in Patients Treated with Peritoneal Dialysis: Clinical and Biochemical Characteristics among Patients with and without Restless Legs Syndrome  [PDF]
Selda Korkmaz, Bulent Tokgoz, Sevda Ismailogullari, Ismail Kocyigit, Merva Kocyigit, Ozgur Berkay Aksu, Murat Aksu
Open Journal of Nephrology (OJNeph) , 2013, DOI: 10.4236/ojneph.2013.31008
Abstract: Introduction and Aims:This is a prospective study identifying prevalence of Restless Legs Syndrome (RLS) in patients ongoing peritoneal dialysis (PD) due to end stage renal disease (ESRD) and comparing clinical and biochemical characteristics among patients with and without RLS. Methods: Two hundred ESRD patients who received PD at least six months assessed by neurologist and nephrologist with regards to presence of RLS. Also, clinical and biochemical features of these patients are determined. One hundred and forty four patients were excluded from study because they had other secondary causes of RLS except for ESRD. Results: Thirteen of 56 patients (23.2%) had RLS. The use of vitamin B + folic acid supplements was significantly lower in patients with RLS than in those without RLS (69.2% vs 97.7%; p = 0.008). There was no significant difference between patient groups with and without RLS in terms of age, gender, body mass index, cause of ESRD, peritoneal membrane transport characteristic, smoking, consuming alcohol, use of erythropoietin, duration of PD, hemoglobin, serum calcium, serum phosphorus, serum albumin, levels of serum iron, total iron binding capacity, ferritin, folic acid and vitamin B12, transferrin saturation, weekly Kt/V urea value, and amount of residual urine volume (p > 0.05). Conclusion: RLS is more common among PD patients than general population. Although essential cause is not exactly known, use of folic acid and vitamin B complex decrease the RLS prevalence in this particular patient group.
Determining Cognitive Structures and Alternative Conceptions on the Concept of Reproduction (The Case of Pre-Service Biology Teachers)  [PDF]
Hakan Kurt, Gülay Ekici, ?zlem Aksu, Murat Akta?
Creative Education (CE) , 2013, DOI: 10.4236/ce.2013.49083
Abstract:

Reproduction is among basic functions of living beings and one of elementary complex subjects of the biology course. This is complicated for learners to construct cognitive structures on the subject. The aim of the current study is to investigate pre-service biology teachers’ cognitive structures related to “reproduction” through the free word-association test and the drawing-writing technique. As the research design of the study, the qualitative research method was applied. The data were collected from pre-service biology teachers. The free word-association test and the drawing-writing technique were used as data collection instruments. The data were subject to content analysis and divided into categories through coding. With the help of these categories, the cognitive structures of pre-service biology teachers were explained. The data collected through the study were divided into 7 categories (structures required for reproduction, re-production in plants and sections, types of reproduction, insemination, reproduction-inheritance, defining reproduction and its importance, reproductive anatomy). In the categories obtained, it was determined that ample data could be collected using different assessment instruments. On the other hand, it was de- termined that pre-service biology teachers had alternative conceptions related to reproduction. It was observed that the pre-service teachers had imperfect cognitive structures regarding the subject of reproduction. Comprehensive suggestions related to the subject are presented at the end of this article.

Primer progressive aphasia
Yahya KARAMAN,Abdullah TALASLIO?LU,Murat AKSU
Erciyes Medical Journal , 2003,
Abstract: We report a 49-year-old male patient old with progressive motor diysphasia which developed in a period of two years. Clinical and laboratory findings suggested the case to be the syndrome of primary progressive nonfluent aphasia; the case was presented and discussed.
Significance of Postnatal Follow-Up of Infants with Vesicoureteral Reflux Having Antenatal Hydronephrosis
Murat Kangin,Nejat Aksu,Onder Yavascan,Murat Anil
Iranian Journal of Pediatrics , 2010,
Abstract: Objective: To evaluate the frequency of urinary tract infections (UTIs) and degree of renal parenchymal damage as well as the parameters of growth, development and nutritional status in antenatal hydronephrosis cases with vesicoureteral reflux (VUR).Methods: Infants, whose antenatal ultrasonography (US) showed a fetal renal pelvic diameter of 5 mm or greater were investigated. Of the 277 infants with antenatal HN, 36 [56 renal units (RUs)] were diagnosed with VUR. All cases with VUR were evaluated in terms of the frequency of UTIs, scars appearing on 99mTechnetium-dimercaptosuccinic acid scan (DMSA), growth and development [height and weight standard deviation scores (HSDS and WSDS)], and nutritional status [relative weight (RW)]. Statistical evaluation was performed using the Chi-squared test.Findings: Of these 36 patients with VUR, 25 (69.4%) were males and 11 (30.6%) females. Of the 56 RUs, 48 (85.7%) had severe VUR (≥ Grade III). The mean duration of postnatal follow-up was 37.8±24.50 months. The annual UTI frequency was found to be 1.25±0.83 episodes/year. Of these 36 infants, 32 (88.8%) recovered from VUR following either medical (17 patients, 47.2%) or surgical (15 patients, 41.6%) treatment. The initial DMSA showed parenchymal defects in 16 (44.4%) RUs, and 4 RUs showed recovery in the final DMSA. Although statistically insignificant (P>0.05), initial growth and development (HSDS: -0.17±0.86; WSDS: 0.00±0.14) and nutritional status (RW: 98.19±8.81) values gradually improved (0.05±1.06, 0.06±1.071 and 101.97±14.85, respectively).Conclusion: Postnatal early diagnosis and appropriate management of VUR in infants with antenatal hydronephrosis can prevent the occurrence of frequent UTIs, renal scarring and malnutrition, enabling normal growth and development.
A Life-Threatening Problem Occurring in the Canalis Inguinalis in Children: Incarcerated Hernia
Mustafa INAN,Umit Nusret BASARAN,Burhan AKSU,Murat DERELI
Trakya Universitesi Tip Fakultesi Dergisi , 2007,
Abstract: Objectives: Inguinal hernia is the most common surgical disorder in childhood and is associated with 5-18 % incarceration risk. The clinical features of incarcerated inguinal hernia in infants and children were assessed.Patients and Methods: The medical records of 33 pediatric cases (30 males, 3 females; mean age 2 years; range 20 days-6 years) treated and followed up in our hospital for incarcerated inguinal hernia in the period of January 1994 and June 2006 were retrospectivelye evaluated.Results: The most frequent symptoms were inguinal lump (n=33), vomiting (n=19) and crepitation of the scrotum (n=10). Manual reduction of hernia was successful in 26 cases and 7 of them underwent emergency hernia repair. Small bowel was the most frequent incarcerated organ (n=22). Testicular ischemia developed in 3 patients, partial small bowel ischemia in 2, and colon ischemia in one patient. Two patients (6%) died due to incarcerated inguinal hernia.Conclusion: We think that in our region, cases of incarcerated inguinal hernia are admitted to the hospital with delay. The children with inguinal hernia should be operated as soon as possible. Life-threatening complications of incarcerated inguinal hernia may thus be prevented.
Prediction of Effective CPAP Level in Obstructive Sleep Apnea Syndrome
Selda KORKMAZ,Sevda ?SMA?LO?ULLARI,Ay?e DUMAN,Murat AKSU
Journal of Neurological Sciences , 2012,
Abstract: Background: Prediction of effective CPAP level to treat obstructive sleep apnea syndrome (OSAS) before CPAP titration helps the effectiveness of titration. Several algorithms that predict the optimal continuous positive airways pressure (CPAP) level have been developed. However, a standard algorithm has not been composed.There are two aims of this study. First, to examine the factors that account for the variability in CPAP levels required to abolish apnea and hypopnea in patients with OSAS. Second, to obtain a formulation of predicting the lowest effective pressure from some anthropometric and polysomnographic variables for Turkish patients with OSAS.Methods: We retrospectively have evaluated 127 patients with mild-severe obstructive sleep apnea who were applied CPAP titration. Anthropometric (body mass index(BMI), age, gender) and polysomnographic (sleep efficacy, epworth sleepiness scale (ESS) score, multiple sleep latency test (MSLT) mean sleep latency, apnea hypopnea index, minimum O2 saturation) parameters in patients are determined. Then, we have evaluated the relationship between optimum CPAP level and those parameters.Results: We found a significant correlation between CPAP level and BMI (p<0.028) and AHI (p<0.001) and min O2sat (p<0.001). However, we did not find a correlation between CPAP level and BMI in presence of multiple variables. Also, there wasn't any correlation between CPAP level and sleep efficacy and ESS score and MSLT mean sleep latency.Conclusions: Predicting optimal CPAP level formulation: logCPAP=0.921-(0.002xminO2sat)+(0.001xAHI). According to this formulation, BMI is not a parameter that affect CPAP level. On the other hand, min O2sat and AHI are important that determine to CPAP level.
The Effect of an Instruction Designed by Cognitive Load Theory Principles on 7th Grade Students’ Achievement in Algebra Topics and Cognitive Load  [PDF]
Aygil Takir, Meral Aksu
Creative Education (CE) , 2012, DOI: 10.4236/ce.2012.32037
Abstract: The purpose of this study was to investigate the effect of an instruction designed by the Cognitive Load Theory (CLT) principles on 7th grade students’ achievement in Algebra topics and cognitive load. A quasi-experimental study was conducted in totally six weeks with 80 students. The instruction designed by CLT principles was used in the experimental group, while the instruction recommended by the Ministry of Education (MONE) was used in the control group. Researchers developed Teachers’ Guidelines and Students’ Booklets for using in the experimental group. At the end of each unit, the Subjective Rating Scale (SRS) was used to measure students’ cognitive load. At the end of the treatment, the Algebra Achievement Test (AAT) was administrated to both of the groups. Both descriptive and inferential statistical techniques were used for analyzing data. Results showed that instruction designed by CLT principles was effective for the Algebra teaching with the limitations of the study.
The Effects of Sugozu Power Plant on Water Quality in the Iskenderun Bay, Eastern Mediterranean
Mehmet Aksu
Journal of Animal and Veterinary Advances , 2012, DOI: 10.3923/javaa.2012.224.228
Abstract: To determine water quality of the impact area of Sugozu power plant, four samplings were carried out from 12 stations in May, August and October, 2009 and January, 2010. Water temperature, pH, salinity, dissolved oxygen, Secchi disc, nutrients (nitrate-nitrogen, ammonium-nitrogen, phosphate-phosphorus and silicate) and chlorophyll a were measured in the water column. Monitoring of water quality parameters showed that Sugozu power plant did not cause detectable changes in the water column. Variations in the investigated parameters were rather seasonal. These results are believed to be the outcome of environmental management system of the plant. By using high quality fuel and advanced burning technologies, treating flu gas and wastewater, it was possible to reduce its environmental effects.
Barbie Against Superman: Gender Stereotypes and Gender Equity in the Classroom
Bengü AKSU
Journal of Language and Linguistic Studies , 2005,
Abstract: In this age of mass media, we are surrounded with images that promote certain genderroles. These hidden forces shape us and our world view, often without us being aware thatthey are doing so. Gender stereotypes occur when generic attributes, opinions or roles havebeen applied toward either gender and the results are apparent everywhere in our society.From the point of view of education, it is important to use and/or to refuse genderstereotypes in the classroom.Since education is a significant social area where gender segregation and the reproductionof gender stereotypes are generated, there is, without doubt, much can be done in this areato prevent this phenomenon. As gender equity, is prevalent part of our society, teachersmust help their students identify where it exists in the classroom and school environment.
Fast SVM-based Feature Elimination Utilizing Data Radius, Hard-Margin, Soft-Margin
Yaman Aksu
Computer Science , 2012,
Abstract: Margin maximization in the hard-margin sense, proposed as feature elimination criterion by the MFE-LO method, is combined here with data radius utilization to further aim to lower generalization error, as several published bounds and bound-related formulations pertaining to lowering misclassification risk (or error) pertain to radius e.g. product of squared radius and weight vector squared norm. Additionally, we propose additional novel feature elimination criteria that, while instead being in the soft-margin sense, too can utilize data radius, utilizing previously published bound-related formulations for approaching radius for the soft-margin sense, whereby e.g. a focus was on the principle stated therein as "finding a bound whose minima are in a region with small leave-one-out values may be more important than its tightness". These additional criteria we propose combine radius utilization with a novel and computationally low-cost soft-margin light classifier retraining approach we devise named QP1; QP1 is the soft-margin alternative to the hard-margin LO. We correct an error in the MFE-LO description, find MFE-LO achieves the highest generalization accuracy among the previously published margin-based feature elimination (MFE) methods, discuss some limitations of MFE-LO, and find our novel methods herein outperform MFE-LO, attain lower test set classification error rate. On several datasets that each both have a large number of features and fall into the `large features few samples' dataset category, and on datasets with lower (low-to-intermediate) number of features, our novel methods give promising results. Especially, among our methods the tunable ones, that do not employ (the non-tunable) LO approach, can be tuned more aggressively in the future than herein, to aim to demonstrate for them even higher performance than herein.
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