Araştırma Çıktıları | Scopus

Permanent URI for this community

http://akademikarsiv.cbu.edu.tr:4000/handle/123456789/6

Browse

Now showing 1 - 20 of 9443

Mental health of both child and parents plays a larger role in the health-related quality of life of obese and overweight children
(Walter de Gruyter GmbH, 1985) Kızılay D.Ö.; Sapmaz Ş.Y.; Şen S.; Özkan Y.; Özyurt B.C.; Ersoy B.
Aims: A decrease in health-related quality of life (HRQOL) measures among obese (OB) and overweight (OW) children has been shown in several studies, but knowledge about the variables affecting HRQOL impairments is missing. The aim of this study was to evaluate the relationship between HRQOL and sociodemographic characteristics, anthropometric measurements, metabolic parameters, mental symptoms and parental attitudes in a sample of OB/OW children. Methods: Eighty-six OB/OW children, aged between 9 and 17 years, participated in the study. We performed sociodemographic questioning, anthropometric examinations and laboratory evaluations of the participants. HRQOL was assessed using the Pediatric Quality-of-Life Inventory (PedsQL), and levels of anxiety and depressive symptoms were measured using the Screen for Child Anxiety-Related Disorders (SCARED) questionnaire and the Children’s Depression Inventory (CDI), respectively. Parental attitudes were assessed with the Parental Attitude Research Instrument (PARI) questionnaire. Results: A statistically significant relationship was found between total scores of CDI and SCARED answered by children and the total and subscale scores of PedsQL. Scores of total quality of life subscale, physical functionality and emotional functionality subscales were significantly lower in children with a family history of mental illness. No relationship was found between PedsQL subscales, anthropometric and metabolic parameters. Conclusions: Emotional problems and parental psychological distress are important factors in models of HRQOL in the OB/OW pediatric population. © 1985 Walter de Gruyter GmbH. All rights reserved.
The proximate composition and some minor constituents of poppy seeds
(1994) Nergiz C.; Ötles S.
The proximate chemical composition of poppy seeds, along with minerals and water‐soluble vitamins content was investigated. The compositions of the fatty acids and tocopherols of the extracted oil were also determined. The proximate analysis of poppy seeds showed the following composition: (440 g kg−1), protein (211 g kg−1), moisture (50 g kg−1), ash (63 g kg−1), crude fine (62 g kg−1) and total carbohydrates (236 g kg−1). Potassium and calcium were the predominant elements in the poppy seeds. Linoleic acid was the major unsaturated fatty acid (750 g kg−1 total fatty acids) while palmitic acid was the main saturated one (86‐4 g kg−1). The amounts of α‐, β‐ and δ‐tocopherols found in poppy seed oil were 220 μg g−1, 40 μg g−1 and 20 μg g−1 respectively. Among the water‐soluble vitamins determined, pantothenic acid was found at the highest level followed by niacin and thiamin. Copyright © 1994 John Wiley & Sons, Ltd
Similarity analysis of boundary layer equations of a class of non-Newtonian fluids
(1994) Pakdemirli M.
A similarity analysis of three-dimensional boundary layer equations of a class of non-Newtonian fluids in which the stress is an arbitrary function of rates of strain is made. It is shown that under scaling transformation, for an arbitrary stress function, only 90° of wedge flow leads to similarity solutions, whereas for a specific more restricted form, similarity solutions exist for arbitrary wedge angles. In the case of spiral group transformation, no similarity solutions exist if we force the stress function to remain arbitrary after the transformation, whereas for a specific more restricted form, similarity solutions exist for arbitrary wedge angles. For both transformations, similarity equations for power-law and Newtonian fluids are presented as special cases of the analysis. Finally the conditions for invariance and the form of the stress function for a two-dimensional case are also presented. © 1994.
Trichomoniasis in non-gonococcic urethritis among male patients.
(1994) Ozbilgin A.; Ozbel Y.; Alkan M.Z.; Gürüz Y.; Atambay M.; Tasçi S.; Ozcel M.A.
Urethral discharge of 415 male patients, age 18-50, were examined for Trichomonas vaginalis by direct examination of fresh and Giemsa-stained slides and cultivation in CPLM media. In this study, 85 (20.7%) specimens out of 415, were found to be positive for trichomoniasis. Three groups consisting of 30, 29 and 26 patients each was treated with secnidazole, metronidazole and ornidazole respectively. In the follow up controls, all patients were found to be negative for trichomoniasis and all complaints were disappeared totally without a significant difference between all groups.
Nonlinear vibrations of a beam-spring-mass system
(1994) Pakdemirli M.; Nayfeh A.H.
The nonlinear response of a simply supported beam with an attached spring-mass system to a primary resonance is investigated, taking into account the effects of beam midplane stretching and damping. The spring-mass system has also a cubic nonlinearity. The response is found by using two different perturbation approaches. In the first approach, the method of multiple scales is applied directly to the nonlinear partial differential equations and boundary conditions. In the second approach, the Lagrangian is averaged over the fast time scale, and then the equations governing the modulation of the amplitude and phase are obtained as the Euler-Lagrange equations of the averaged Lagrangian. It is shown that the frequency-response and force-response curves depend on the midplane stretching and the parameters of the spring-mass system. The relative importance of these effects depends on the parameters and location of the spring-mass system. © 1994 ASME.
The effect of zinc supplementation in experimentally induced Toxoplasma gondii infection.
(1995) Tasçi S.; Sengil A.Z.; Altindis M.; Arisoy K.
The effect of zinc added diet on cellular immunity in toxoplasmosis was investigated on 50 male wistar albino rats. Total lymphocyte CB8 count were found higher in the infected group when compared to the control group (P < 0.001). The relative increase of CD8 was found to be responsible for the decrease in ratio. In the infected group, there was a slight decrease in CD4 count but it was statistically insignificant. While no significant differences in serum zinc level were observed between the groups, there was a positive correlation with CD8 count in infected group (r = 0.005, P < 0.05). As a result, zinc added diet in toxoplasmosis stimulated the cellular immunity, increased CD8 and total lymphocytes.
Performance analysis of induction motors with artificial neural networks
(IEEE, 1995) Karlik Bekir; Gulez Kayhan
Induction motors are exited machines used in a lot of areas in industry because of the features like the simpleness of the structure, the easiness of the control and the necessity of the fewer care. One of priority reasons of induction motors is that the speed adjusting can easily be done by wide ranges by means of the developing of solid-state technology. In this paper, it is put forward that ANN can firstly be used in the performance analysis of induction motors.
Computer-aided design of submarine pipelines
(1995) Gökkus Ü.
The computerization of pipeline design is relatively important for the engineering feasibility of submarine pipelines. The changing environmental conditions make difficulties for the stability calculation of each pipe segment on line. For this reason, the computer study will provide many advantages during the design of pipeline. The different environmental and functional parameters can be easily tried on line and the most suitable size of structure against the extreme environmental conditions can be determined. This study deals with the general design principles especially including the engineering studies, i.e. wave statistical analysis, transformation of waves, stability analysis, and developed computer program to achieve both the stabilization of pipeline and aid for drawing the route together with user in some stages of the design. Finally, the outline of the program is briefly described and a flow chart is presented. © 1995, International Association on Water Quality. All rights reserved.
The electrocardiogram of the Pekin duck
(American Association of Avian Pathologists, 1996) Cinar A.; Bagci C.; Belge F.; Uzun M.
In this study, standard limb lead electrocardiograms (ECG) were recorded in 50 Pekin ducks. The ECG exhibited P, R, S, and T waves. A Q wave was observed in 30% of leads aVR aVL. All waves in lead I were of very low amplitude or almost isoelectric. The P wave was 20% negative, 80% positive in lead aVR and always positive in other leads. The duration and amplitude of P wave were 0.025 sec and 0.17 mV, respectively, and the P-R interval was 0.06 sec in lead II. A Q wave was observed in 30% of leads aVR and aVL but was invisible in other leads. The duration of QRS complex was 0.036 sec and its amplitude was 0.069 mV. The S wave (rS) was greater than the R wave in leads III and aVF. The R and S waves were equal in lead III (66%). The mean duration and amplitude oft wave were 0.05 sec and 0.22 mV, respectively. The T wave was negative in leads aVR and aVL and positive in other leads. The Q- T interval was 0.10 sec. The mean heart rate was 281.3 (220-375) beats/min. The average value of the mean electrical axis was +147°(+95°to -160°).
The effect of tramadol on minimal alveolar enflurane concentrations in children; [TRAMADOL'UN COCUKLARDA MINIMAL ALVEOLER ENFLURAN KONSANTRASYONLARINA ETKISI]
(1996) Erincler T.
Laryngospasm following extubation can be quite troublesome after adenoidectomy and tonsillectomy for children. High end-tidal anesthetic concentrations may prevent the anesthetized patients from coughing or moving during and immediately after tracheal extubation, but extubating while the child is quite deeply anesthetized is uncommon in current practice. In this study it has been proved that tramadol given intravenously at a dose of 2 mg/kg following extubation is quite effective in preventing laryngospasm in children after adenoidectomy, and does not cause respiratory depression. Eighty-seven children undergoing adenoidectomy and myringotomy were divided randomly into two groups consisting of 33 and 54 children. Tramadol was given intravenously after the induction of anesthesia to the larger group. Anesthesia was maintained with enflurane, nitrous oxide and oxygen in both groups. End-tidal enflurane concentrations were sampled from a -T- piece attached to the endotracheal tube and measured continuously by mass spectrometry. Oxygen saturations were monitored by pulse oximetry. The minimum alveolar concentrations of enflurane for satisfactory tracheal extubation were found to be 1.9 ± 0.5% and 0.8 ± 0.4% in group I and group II children, respectively. In anesthetized children between ages 2 and 9, tracheal extubation may be accomplished without coughing, laryngospasm or respiratory depression with smaller end-tidal enflurane concentrations, if tramadol is administered previously.
P-36 Antidepressant choice in the outpatient department of a psychiatry clinic
(Elsevier B.V., 1996) Işelli I.; Özmen E.
[No abstract available]
EMG pattern discrimination for patient-response control of FES in paraplegics for walker supported using artificial neural network (ANN)
(IEEE, 1996) Kocyigit Yucel; Karlik Bekir; Korurek Mehmet
FES (functional electrical stimulation) encompasses the use of electricity in functioning neural substrates. FES is used to restore lower limb function to individuals paralyzed by spinal cord injury. The system determines a patient-responsive manner using above-lesion surface EMG signals to activate standing and walking functions. In this work, classification of EMG patterns which were used by FES to restore lower limb function of walker-supported walking patients was done by using ANN.
Zinc tolerance test patterns in normal children and in moderate and severe zinc deficiency states
(Springer India, 1996) Oksel F.; Köksyo H.; Taneli B.
Twenty-six normal, 38 moderately and 14 severely zinc-deficient children, aged 2-12 years, were examined by clinical and laboratory approaches. After fasting-blood sampling, 120 mg zinc sulphate (25 mg elemental zinc) were administered orally to each group of children, to obtain zinc tolerance curve patterns. Sampling proceeded to the 2nd and 4th hours of the loading test period. Plasma zinc was assessed on an atomic absorption spectrophotometer. In normal children, at the 2nd hour of loading, a significant (p < .001) elevation (1.764 ± 0.133 mg/l) in the mean (±SEM) plasma zinc level was noted; also at the 4th hour a significant (p < .001) decrease (1.506 ± 0.123 mg/l) in the mean plasma zinc level was shown. The mean plasma zinc level at the 4th hour was found higher than the mean fasting plasma zinc level (1.054 ± 0.061 mg/l), but lower than the mean level found at the 2nd hour. In moderately zinc-deficient children, tle rise in the 2nd hour and the fall in the 4th hour in the plasma zinc level were highly significant (p < .001 and p < .001, respectively) in relation to fasting blood level. However, in severely zinc deficient children, the intensity of the increase (0.746 ± 0.147 mg/l) in plasma zinc level at the 2nd hour was of lesser significance (p < .006) and the fall (0.424 ± 0.061) mg/l) at the 4th hour was not significant. Therefore, in children with normal plasma zinc levels, an increase of more than 0.50 mg/l was seen at the 2nd hour of loading. This rise was seen to persist at the 4th hour. However, in children with moderate zinc deficiency, although again an increase of 0.50 mg/l was seen at the 2nd hour this increase did not persist at the 4th hour; and the 4th-hour value showed a significant decrease in relation to the 2nd hour value. Whereas, in children with severe zinc deficiency the rise of plasma level at the 2nd hour was less than 0.5 mg/l and the fall at the 4th hour was to such a level which was not significant in relation to fasting zinc level. This could be due to enhanced uptake of zinc off the circulation by the depleted tissues in severe zinc deficiency.
The relationship of plasma zinc to lymphocyte subsets in children with chronic upper respiratory tract infections
(1996) Oksel F.; Tanell B.
Plasma zinc level (PZL) and peripheral blood lymphocyte subsets were simultaneously assessed in children with plasma zinc levels > 0.80 mg/L (Group I, 20 cases), and in children with plasma zinc levels < 0.70 mg/L, with chronic upper respiratory infection (Group II, 22 cases) during one of the silent periods; and before (Group III-A, 11 cases) and after (Group III-B) 2 mg/kg/30 days zinc sulphate supplementation. Among all the significant findings of Student's t-test and regression analysis, the outstanding significant differences were: 1) between T4/T8 ratios (P < .001, t = 3.469) in Groups I and II; and 2) between T4/T8 ratios (P < .011, t = 2.715) in Groups III-A and III-B. Significant polynomial parabolic relations were found 1) between T(S) counts and the PZL in Group II (P < .009, r = 0.626) and in Group III-A (P < .039, r = 0.746), respectively; and 2) between B lymphocyte (B lym) populations and the PZL in Group II (P < .002, r = 0.688) and in Group III-A (P < .020, r = 0.790) respectively. Significant multifactorial relations were found 1) between PZL-T8-B lym (P < .007, r = 0.636) in Group II and (P < .014, r = 0.812) in Group III-A (thus, low PZL affects both T8 and B lym counts); and 2) between PZL-T8-T4/TB8-B lym in Group II (P < .014, r = 0.660) and Group III-A (P < .023, r = 0.850). However, the same relations were not seen when the plasma-zinc value was normal or after zinc supplementation. We did not come across any report in the literature concerning regression analyses and curve illustrations in children with upper respiratory tract infection and low plasma zinc level. In conclusion, children with chronic upper respiratory tract infections presenting a low plasma zinc level would seem to benefit if zinc is supplemented.
Effects of passive exposure to tobacco, socioeconomic status and a family history of essential hypertension on lipid profiles in children
(International Heart Journal Association, 1996) Işcan A.; Uyanik B.S.; Vurgun N.; Ece A.; Yiǧitoǧlu M.R.
There is abundant evidence that the atherosclerotic process begins in childhood. Dyslipidemia is a major risk factor for atherosclerosis in adults and children. In the present study, we measured serum lipoprotein concentrations in 194 healthy children aged between 4 to 14 years. Children were grouped according to the socioeconomic status of the families, family history of essential hypertension and passive tobacco exposure. The values of total cholesterol, low density lipoprotein cholesterol and the ratio of total cholesterol/high density lipoprotein cholesterol in the low socioeconomic group were found to be significantly higher than the values obtained for the middle-high socioeconomic group. The values of total cholesterol, low density lipoprotein cholesterol, the ratio of total cholesterol/high density lipoprotein cholesterol and low density lipoprotein cholesterol/high density lipoprotein cholesterol in the passive smoker group were found to be significantly higher than those of the nonsmoker group. But, the socioeconomic level in the passive smoker group was found to be significantly lower than that of the nonsmoker group, and therefore, the impact of passive smoking on the serum lipids in children was related to socioeconomic status. A significant difference in terms of blood lipid fractions between the groups with and that without a family history of essential hypertension was not found. These results suggest that passive smoking and lower socioeconomic status are important risk factors for cardiovascular heart disease, while a positive family history of essential hypertension is not an important risk factor.
Deacidification of high acid olive oil by immobilized lipase
(1996) Makasçi A.; Arisoy K.; Telefoncu A.
The acidity reduction of high acid oils prior to refining could be an attractive application for industry. In this study the enzymatic deacidification degummed and dewaxed olive oil with a high free fatty acid content, catalysed by an immobilized lipase was optimzed (Novozym 435). The optimum amount of substrate for synthesizing trigliycerides was the necessary stoichiometric amount of fatty acid and glycerol. The mixing was performed with a mechanical stirrer and the dehydration was performed by vacuum pump or by bubbling dry nitrogen. The dehydration rate was faster than the deacidification rate. The four parameters chosen for this experimental plan: pressure, temperature, and the amounts of glycerol and enzyme in the reaction mixture. The use of glycerol more than theortical amount did not affect the rate of deacidification. The stoichiometric amount of glycerol was sufficient for the deacidification of high acid olive oil. Maintaining low pressure is very important for the removal of water which is formed during the esterification reaction. Either, the reaction is conducted at 20 mm Hg or the dehydration is performed by bubbling dry nitrogen. The optimum amount of immobilized enzyme necessary for the deacidification reaction was determined and 10:1 ratio of oil: immobilized enzyme appeared to be satisfactory. The effect of temperature on the deacidification of high acid olive oil was investigated (between 40-70°C). The reaction temperature influenced the rate of deacidification. The optimum operation temperature was found to be 60°C. At 70°C the deacidification decreased with increasing incubation time due to enzyme deactivation occuring at this temperature.
Symmetry groups of boundary layer equations of a class of non-newtonian fluids
(Elsevier Ltd, 1996) Pakdemirli M.; Yürüsoy M.; Kücükbursa A.
A non-Newtonian fluid model in which the stress is an arbitrary function of the symmetric part of the velocity gradient is considered. Symmetry groups of the two-dimensional boundary layer equations of the model are found by using exterior calculus. The complete isovector field corresponding to some cases, such as arbitrary shear function, Newtonian fluids, and power-law fluids, are found. Similarly, solutions for some special transformations are presented. Results obtained in a previous paper [M. Pakdemirli, Int. J. Non-Linear Mech. 29, 187 (1994)] using special groups of transformations (scaling, spiral) are verified in this study using a general approach. Copyright © 1996 Elsevier Science Ltd.
New approach for arrhythmia classification
(IEEE, 1996) Karlik Bekir; Ozbay Yuksel
ECG signal is formed of P wave, QRS complex and T wave. P wave appears as a result of QRS complex ventricle contraction because of electrical stimulation initiation at sinoatrial node and spreading in cardiac muscles. T wave appears as a result of ventricle relaxation. In this study ECG signal is analyzed in time domain. For this purpose, arrhythmia are determined by taking related mean time intervals of ECG as future extraction. Arrhythmia are categorized by applying time elapsed between two R waves (RR intervals), appearing in ECG signals, as the input of Artificial Neural Networks (ANN).
A comparative study of azithromycin, cephalexin and penicillin V for the treatment of streptococcal pharyngitis and tonsillitis in children; [COCUKLARDA STREPTOKOKSIK FARENJIT VE TONSILLIT TEDAVISINDE AZITROMISIN, SEFALEKSIN VE ORAL PENISILIN VNIN ETKINLIGININ KARSILASTIRILMASI]
(1996) Ece A.; Iscan A.; Sengil A.Z.; Balkan C.; Cetinkaya Z.
In this study, clinical and bacteriological efficacies of penicillin V were compared with those of azithromycin and cephalexin. Of 94 children who had group A beta hemolytic streptococcal (GABHS) pharyngitis/tonsillitis, 31 received a single daily. dose of azithromycin (10 mg/kg) for three days, 33 received cephalexin 40 mg/kg/day in three doses for 10 days, 30 received oral penicillin V 50.000 IU/kg for 10 days. At the end of the treatment, bacterial eradication was achieved in 91% of azithromycin-treated patients, 88% of cephalexin-treated patients and 83% of penicillin treated-patients (p > 0.05). Clinical cure rates were 94% in azithromycin group, 91% in cephalexin group and 90% in penicillin group (p > 0.05). At follow-up evaluation (day 30 ± 5) bacteriologic recurrence was observed in 4 patients of azithromycin-treated group (13%), in 6 of cephalexin treated group (18%) and in 6 of penicillin-treated group (20%). The results of this study indicate that oral penicillin V is clinically as effective as azithromycin and cephalexin in the treatment of GABHS pharyngotonsillitis.
Ovarian dysgerminoma with contralateral gonadoblastoma in a 46XY phenotypic female: Swyer syndrome
(1996) Taneli C.; Genc K.; Erikci V.; Balik E.; Erhan Y.; Ozdemir N.; Veral A.
A 15-year-old girl was admitted to the pediatric surgery department with primary amenorrhea and right inguinal swelling of one year duration. On physical examination, the patient presented with a female phenotype, but no breast development; somewhat hirsute with hypertrophic clitoris. Ultrasound examination disclosed a palpable mass originating from the right ovary. At operation, a right salpingo-ooferectomy was performed, and a biopsy specimen was obtained from the left ovary which did not appear normal. Histopathologic examination revealed a right ovarian disgerminoma and a left gonadoblastoma. One month after the first operation, a left gonadectomy was performed with accompanying cliteroplasty. An original case of Swyer syndrome is reported in a patient with female phenotype, dysgerminoma of the right and gonadoblastoma of the the left ovaries.

Browse

Browsing by Issue Date

Results Per Page

Sort Options