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  1. Home
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Browsing by Author "Taskin, B"

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    Transient analysis of dam-reservoir interaction including the reservoir bottom effects
    Küçükarslan, S; Coskun, SB; Taskin, B
    In this paper, time-domain transient analysis of elastic dam-reservoir interaction including the reservoir bottom effects is presented by coupling the finite element method in the infinite fluid domain and in the solid domain. An efficient coupling procedure is formulated by a substructuring method. Sommerfeld's boundary condition for the far end of the infinite domain is implemented. To verify the proposed scheme, numerical examples are given to compare with available exact solutions for rigid and elastic dam cases. Finally, a numerical example is studied to evaluate the effects of the reservoir bottom. (c) 2005 Elsevier Ltd. All rights reserved.
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    Public awareness, knowledge and sensitivity towards celiac disease and gluten-free diet is insufficient: a survey from Turkey
    Taskin, B; Savlak, N
    One of the most challenging aspects of celiac disease management is lack of awareness in public. Aim of the study was to evaluate public awareness and sensitivity on celiac disease and gluten-free diet. 501 individuals in Manisa, Turkey were subjected to a survey to obtain information on demographics, awareness of celiac disease, celiac and gluten-free diet relationship, effect on social life quality and social awareness and sensitivity. Results were analyzed by chi-square test. 43.9% of the public had never heard of celiac disease before. Females were more aware of the disease and gluten-free diet dependency. Majority of the postgraduates (79.6%) recognized the disease. 44.9% of the respondents remarked that celiac patients had hesitations on dining out, while 32.3% found those people restricted for travel and holiday activities. Above one-third of subjects indicated that gluten-free product variety in the market was inadequate. However, more than half had no idea on these. Over 50% felt that, social awareness and sensitivity towards disease was unsatisfactory. This study was conducted to mirror the society?s approach towards celiac patients. It was demonstrated that public?s awareness and sensitivity about celiac disease was scarce. Knowledge of ?celiac? needs to be raised.
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    Impact of drum drying conditions on functional properties and flow behavior of gluten-free instant fermented mung bean-rice soup
    Taskin, B; Savlak, N
    The effect of drum drying conditions on functional properties of a nutritious, gluten-free instant fermented (tarhana) soup which was developed for celiac people by a partial substitution of rice flour with mung bean flour (1:1, w/w) was investigated. Response surface method was used to optimize drum drying process conditions for development of mung bean fortified soup. Impacts of independent variables; feed moisture (45-55-65%), drum rotating speed (0.6-1.4-2.2 rpm) and steam pressure (75-85-95 psi) on water and oil absorption capacities, foam capacity, foam stability, protein solubility and flow behavior were investigated. Responses were significantly affected by process variables. Feed moisture was the main factor affecting water and oil absorption capacity and viscosity, while drum rotating speed primarily affected protein solubility, foam capacity and stability. Maximum foaming abilities were obtained at high drum speeds and low feed moistures. Optimum process conditions were determined as 62.22% feed moisture, 2.20 rpm rotating speed, 75 psi pressure, with a desirability value of 0.693. The best achievable response values predicted by numerical optimization for these combinations were water absorption capacity: 3.25 mL/g, oil absorption capacity: 0.51 mL/g, protein solubility: 2.68 mg/mL, foam capacity: 0.07 mL/mL, foam stability: 14.59 min, and consistency coefficient: 2.04. Gluten-free mung bean-rice soup with increased protein content (20.52-22.62%) and functional properties along with higher dietary fiber (2.63-3.94%) will contribute to life quality of celiac patients.
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    Functional, chemical, and sensorial properties of gluten-free fermented instant soup powders developed by use of mung bean and drum drying process
    Taskin, B; Savlak, N
    There is a potent demand to develop novel gluten-free food alternatives that are nutritious and functional. Gluten-free instant fermented soup powder was developed by partial substitution of rice flour with mung bean flour. Effect of drum drying conditions; feed moisture (45-65%), drum rotating speed (0.6-2.2 rpm), and steam pressure (75-95 psi) on functional, chemical, sensorial, and morphological properties of soup powders were investigated. Soup powders exhibited high protein content (20.52-22.62%) and remarkable amounts of dietary fibers (2.63-3.94%), total phenolics (2.23-3.64 mu g GAE/g), and antioxidant capacities (DPPH: 6.28-9.96 mu mol TEAC/g, FRAP: 26.02-42.88 mu mol/g). The instant structure of the soup powder was provided by water solubility (17.93-23.14%), water absorption (3.20-4.20 g/g), and gelatinization degree (82.92-97.60%) analyses, as well as SEM appearances and DSC thermograms. Optimized conditions were determined as 57.55% feed moisture, 1.00 rpm rotating speed, and 91.27 psi steam pressure. Developed instant soup powders had enhanced chemical, functional and bioactive properties, and can be used practically in daily and social life by celiac patients or gluten sensitive individuals. Mung bean was proven to be a valid option for novel application opportunities in gluten-free systems.
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    The effect of irradiation on antioxidant activities of sage, oregano and basil
    Bagdatlioglu, N; Taskin, B; Orman, S
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    Optimisation of microwave effect on bioactives contents and colour attributes of aqueous green tea extracts by central composite design
    Taskin, B; Özbek, ZA
    The aim of the present study was to investigate the effects of microwave-assisted extraction parameters on total phenolic content (TPC), total flavonoid content (TFC), condensed tannins content (CTC), DPPH-scavenging activity, and colour attributes of aqueous green tea extracts and to optimise the microwaving conditions using response surface methodology. Microwave power (120-360-600 W) and irradiation time (1-3-5 min) were selected as independent variables. Statistical analysis revealed that all responses were significantly affected by extraction parameters. The optimum microwave-assisted extraction conditions were 350.65 W microwave power and 5 min irradiation time to maximise TPC, TFC, CTC, DPPH-scavenging activity, and L* values and to minimise a* and b* values of aqueous green tea extracts. The predicted TPC was 116.58 mg gallic acid equivalents/g (GAE/g), TFC was 49.33 mg catechin equivalents/g (CE/g), CTC was 9.89 mg catechin equivalents/g (CE/g), DPPH-scavenging activity (IC50) was 294.46 mu g/mL, L* value was 12.31, a* value was 2.61 and b* value was 7.02 under optimum microwave-assisted extraction conditions. This study revealed that microwave extraction conditions should be controlled to obtain aqueous green tea extracts with both high bioactivity and acceptable colour quality.
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    The prevalence of childhood psychopathology in Turkey: a cross-sectional multicenter nationwide study (EPICPAT-T)
    Ercan, ES; Polanczyk, G; Ardic, UA; Yuce, D; Karacetin, G; Tufan, AE; Tural, U; Aksu, H; Aktepei, E; Arman, AR; Basgülk, S; Bilac, O; CosKunm, M; Celik, GG; Demirkaya, SK; Dursun, BO; Durukan, I; Fidan, T; Fis, NP; Gençoglan, S; Gökçen, C; Görker, I; Görmez, V; Gündogdu, OY; Gurkan, CK; Hergüner, S; Hesapçioglu, ST; Kandemir, H; Kiliç, BG; Kilinçaslan, A; Mutluer, T; Nasiroglu, S; Özcan, ÖÖ; Öztürk, M; Öztop, D; Sapmad, SY; Süren, S; Sahin, N; Tahiroglu, AY; Toros, F; Ünal, F; Vural, P; Yazici, IP; Yazici, KU; Yildirim, V; Yulaf, Y; Yüce, M; Yüksel, T; Akdemir, D; Altun, H; Ayik, B; Bilgic, A; Bozkurt, ÖH; Çakir, ED; Çeri, V; Demir, NÜ; Dinç, G; Irmak, MY; Karaman, D; Kinik, MF; Mazlum, B; Memik, NÇ; Özdemir, DF; Sinir, H; Tasdelen, BI; Taskin, B; Ugur, Ç; Uran, P; Uysal, T; Üneri, Ö; Yilmaz, S; Yilmaz, SS; Açikel, B; Aktas, H; Alaca, R; Aliç, BG; Almaidan, M; Ari, FP; Aslan, C; Atabay, E; Ay, MG; Aydemir, H; Ayranci, G; Babadagi, Z; Bayar, H; Bayhan, PÇ; Bayram, Ö; Bektas, ND; Berberoglu, KK; Bostan, R; Canli, MA; Cansiz, MA; Ceylan, C; Coskun, N; Coskun, S; Çakan, Y; Demir, I; Demir, N; Demirdögen, EY; Dogan, B; Dönmez, YE; Dönder, F; Efe, A; Eray, S; Erbilgin, S; Erden, S; Ersoy, EG; Eseroglu, T; Firat, SK; Gök, EE; Güler, G; Güles, Z; Günes, S; Günes, A; Günay, G; Özgür, BG; Güven, G; Goksoy, SC; Horozcu, H; Irmak, A; Isik, U; Kahraman, Ö; Kalayci, BM; Karaaslan, U; Karadag, M; Kilic, HT; Kiliçaslan, F; Kinay, D; Kocael, O; Koç, EB; Mutlu, RK; Lushi-San, Z; Nalbant, K; Okumus, N; Özbek, F; Özdemir, FA; Özdemir, H; Özkan, S; Özyurt, EY; Polat, B; Polat, H; Sekmen, E; Sertçelik, M; Sevgen, FH; Sevince, O; Süleyman, F; Shamkhalova, Ü; Simsek, NE; Tanir, Y; Tekden, M; Temtek, S; Topal, M; Topal, Z; Türk, T; Uçar, HN; Uçar, F; Uygun, D; Uzun, N; Vatansever, Z; Yazgili, NG; Yildiz, DM; Yildiz, N
    Aim: The aim of this study was to determine the prevalence of childhood psychopathologies in Turkey. Method: A nation-wide, randomly selected, representative population of 5830 children (6-13 years-old) enrolled as a 2nd,3rd or 4th grade student in 30 cities were evaluated for presence of a psychiatric or mental disorder by a Sociodemographic Form, Kiddie Schedule for Affective Disorders and Schizophrenia for School Age Children-Present and Lifetime Version (K-SADS-PL), and DSM-IV-Based Screening Scale for Disruptive Behavior Disorders in Children and Adolescents scales. Impairment criterion was assessed via a 3 point-Likert scale by the parent and the teacher independently. Results: Overall prevalence of any psychopathology was 37.6% without impairment criterion, and 17.1% with impairment criterion. Attention-deficit hyperactivity disorder was the most frequent diagnosis, followed by anxiety (19.5% and 16.7% without impairment, 12.4% and 5.3% with impairment, respectively). Lower education level and presence of a physical or psychiatric problem of the parents were independent predictors of any psychopathology of the offspring. Conclusion: This is the largest and most comprehensive epidemiological study to determine the prevalence of psychopathologies in children and adolescents in Turkey. Our results partly higher than, and partly comparable to previous national and international studies. It also contributes to the literature by determining the independent predictors of psychopathologies in this age group.
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    Prevalence of Childhood Affective disorders in Turkey: An epidemiological study
    Karacetin, G; Arman, AR; Fis, NP; Demirci, E; Ozmen, S; Hesapcioglu, ST; Oztop, D; Tufan, AE; Tural, U; Aktepe, E; Aksu, H; Ardic, UA; Basgul, S; Bilac, O; Coskun, M; Celik, GG; Demirkaya, SK; Dursun, OB; Durukan, I; Fidan, T; Gencoglan, S; Gokcen, C; Gokten, ES; Gorker, I; Gormez, V; Gundogdu, OY; Gurkan, CK; Herguner, S; Kandemir, H; Kilic, BG; Kilincaslan, A; Mutluer, T; Nasiroglu, S; Ozcan, OO; Ozturk, M; Sapmaz, SY; Suren, S; Sahin, N; Tahiroglu, AY; Toros, F; Unal, F; Vural, P; Yazici, IP; Yazici, KU; Yildirim, V; Yulaf, Y; Yuce, M; Yuksel, T; Akdemir, D; Altun, H; Ayik, B; Bilgic, A; Bozkurt, OH; Cakir, ED; Ceri, V; Demir, NU; Dinc, G; Irmak, MY; Karaman, D; Kinik, MF; Mazlum, B; Memik, NC; Ozdemir, DF; Sinir, H; Tasdelen, BI; Taskin, B; Ugur, C; Uran, P; Uysal, T; Uneri, OS; Yilmaz, S; Yilmaz, SS; Acikel, B; Aktas, H; Alaca, R; Alic, BG; Almbaidheen, M; Ari, FP; Aslan, C; Atabay, E; Ay, MG; Aydemir, H; Ayranci, G; Babadagi, Z; Bayar, H; Bayhan, PC; Bayram, O; Bektas, ND; Berberoglu, KK; Bostan, R; Cakan, Y; Canli, MA; Cansiz, MA; Ceylan, C; Coskun, N; Coskun, S; Demir, I; Demir, N; Demirdogen, EY; Dogan, B; Donmez, YE; Donder, F; Efe, A; Eray, S; Erbilgin, S; Erden, S; Ersoy, EG; Eseroglu, T; Firat, SK; Gok, EE; Goksoy, SC; Guler, G; Gules, Z; Gunay, G; Gunes, S; Gunes, A; Guven, G; Horozcu, H; Irmak, A; Isik, U; Kahraman, O; Kalayci, BM; Karaaslan, U; Karadag, M; Kilic, HT; Kilicaslan, F; Kinay, D; Koc, EB; Kocael, O; Mutlu, RK; San, Z; Nalbant, K; Okumus, N; Ozbek, F; Ozdemir, FA; Ozdemir, H; Ozgur, BG; Ozkan, S; Ozyurt, EY; Polat, B; Polat, H; Sekmen, E; Sertcelik, M; Sevgen, FH; Sevince, O; Shamkhalova, U; Suleyman, F; Simsek, NE; Tanir, Y; Tekden, M; Temtek, S; Topal, M; Topal, Z; Turk, T; Ucar, HN; Ucar, F; Uygun, D; Uzun, N; Vatansever, Z; Yazgili, NG; Yildiz, DM; Yildiz, N; Ercan, ES
    Aim: To determine the prevalence of affective disorders in Turkey among a representative sample of Turkish population. Methods: This study was conducted as a part of the The Epidemiology of Childhood Psychopathology in Turkey (EPICPAT-T) Study, which was designed by the Turkish Association of Child and Adolescent Mental Health. The inclusion criterion was being a student between the second and fourth grades in the schools assigned as study centers. The assessment tools used were the K-SADS-PL, and a sociodemographic form that was designed by the authors. Impairment was assessed via a 3 point-Likert type scale independently rated by a parent and a teacher. Results: A total of 5842 participants were included in the analyses. The prevalence of affective disorders was 2.5 % without considering impairment and 1.6 % when impairment was taken into account. In our sample, the diagnosis of bipolar disorder was lacking, thus depressive disorders constituted all the cases. Among depressive disorders with impairment, major depressive disorder (MDD) (prevalence of 1.06%) was the most common, followed by dysthymia (prevalence of 0.2%), adjustment disorder with depressive features (prevalence of 0.17%), and depressive disorder-NOS (prevalence of 0.14%). There were no statistically significant gender differences for depression. Maternal psychopathology and paternal physical illness were predictors of affective disorders with pervasive impairment. Conclusion: MDD was the most common depressive disorder among Turkish children in this nationwide epidemiological study. This highlights the severe nature of depression and the importance of early interventions. Populations with maternal psychopathology and paternal physical illness may be the most appropriate targets for interventions to prevent and treat depression in children and adolescents.
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    Farm to fork applications: how vibrational spectroscopy can be used along the whole value chain?
    Pandiselvam, R; Aydar, AY; Özbek, ZA; Atik, DS; Sufer, O; Taskin, B; Olum, E; Ramniwas, S; Rustagi, S; Cozzolino, D
    Vibrational spectroscopy is a nondestructive analysis technique that depends on the periodic variations in dipole moments and polarizabilities resulting from the molecular vibrations of molecules/atoms. These methods have important advantages over conventional analytical techniques, including (a) their simplicity in terms of implementation and operation, (b) their adaptability to on-line and on-farm applications, (c) making measurement in a few minutes, and (d) the absence of dangerous solvents throughout sample preparation or measurement. Food safety is a concept that requires the assurance that food is free from any physical, chemical, or biological hazards at all stages, from farm to fork. Continuous monitoring should be provided in order to guarantee the safety of the food. Regarding their advantages, vibrational spectroscopic methods, such as Fourier-transform infrared (FTIR), near-infrared (NIR), and Raman spectroscopy, are considered reliable and rapid techniques to track food safety- and food authenticity-related issues throughout the food chain. Furthermore, coupling spectral data with chemometric approaches also enables the discrimination of samples with different kinds of food safety-related hazards. This review deals with the recent application of vibrational spectroscopic techniques to monitor various hazards related to various foods, including crops, fruits, vegetables, milk, dairy products, meat, seafood, and poultry, throughout harvesting, transportation, processing, distribution, and storage.
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    Tattoos in dermatology: demographics, motivations, tattooing practices
    Altunay, IK; Gülsunay, IE; Özkur, E; Aydin, C; Manav, V; Ozden, HK; Çalikoglu, EE; Ertekin, SS; Erdogan, HK; Taskin, B; Kuru, S; Memet, B; Gürok, NG; Ermertcan, AT
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    Tattoos: Demographics, Motivations, and Regret in Dermatology Patients
    Altunay, IK; Güngör, IE; Ozkur, E; Aydin, C; Manav, V; Ozden, HK; Ertekin, SS; Calikoglu, EE; Erdogan, HK; Taskin, B; Ficicioglu, S; Memet, B; Gürok, NG; Ermertcan, AT
    Background: Tattoos are very popular in today's world. Objectives: The aim of this study was to determine the demographics, the characteristics of tattoos, motivations for getting tattoos, tattooing practices and tattoo regret. Materials and Method: This multi-centre, cross-sectional study was conducted among. 302 patients attending to the dermatology outpatient clinics and having at least one tattoo. A questionnaire form including all needed data about patients, tattoo characteristics and possible reasons for obtaining tattoos was designed and applied to all participants. Results: Of 302 patients, 140 (46,4%) were females and 162 (53,6%) were men. The mean age was28,3 +/- 8,1 years (min-max, 16-62) for all study group, 53% of participants (n = 160) had at least one tattoo involving letters or number, 80 participants (26%) stated regret for at least one of their tattoos, and 34 of them (42,5%) had their unwanted tattoo removed or camouflaged with a new tattoo. The most common reason for regret was 'not liking the tattoo anymore'. The most common motivations for having tattoos were 'to feel independent', 'to feel better about himself/herself' and 'to look good'. Women had higher scores than men regarding tattoo motivations of 'to be an individual' and 'to have a beauty mark'. Conclusion: Given the rates, tattoo regret is a significant issue and as motivations differ between genders, age groups and other demographic characteristics; tattoos are not just an ink or drawing on the body, but a tool for individuals to express themselves and to construct self-identity. Tattoos have deep symbolic meanings for emotions, and they may be a clue for behavioural patterns of individuals.
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    A computationally efficient solution of the wave equation for the transient response of infinite reservoirs
    Taskin, B; Kucukarslan, S
    In this paper, the transient response of an infinite reservoir is analyzed using the dual-reciprocity boundary element method. A vertical and an inclined-face rigid dam are analyzed under a transient loading. Sharan-type boundary-condition transmission is implemented in the formulation. The results are compared with the exact solution and those obtained by using the finite element method. It is seen that the application of the dual-reciprocity boundary element method is simpler and the results are in very good agreement with the exact solution and those obtained by using the finite element method. Keywords Dual-reciprocity boundary element method.

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