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2010

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Prey Preference, Interaction With Selected Natural Enemies, And Alternative Nutritional Sources Of The Mirid Bug Dicyphus Tamaninii Wagner, Ihab Ghabeish, Azzam Saleh, Abdulfattah Dababat Jan 2010

Prey Preference, Interaction With Selected Natural Enemies, And Alternative Nutritional Sources Of The Mirid Bug Dicyphus Tamaninii Wagner, Ihab Ghabeish, Azzam Saleh, Abdulfattah Dababat

Turkish Journal of Agriculture and Forestry

The present study aimed to investigate the prey preference of the omnivorous bug Dicyphus tamaninii Wagner (Heteroptera: Miridae) among 5 different prey species, and its interaction with 3 different natural enemies commonly used in greenhouses. Moreover, the survival duration of the predator was studied in response to different nutritional sources. In multi-choice trials all developmental stages of the predator tested, namely N_3, N_5, and adult female, showed a clear preference for Aphis gossypii Glover over other prey species offered. Nonetheless, a considerable number of Tetranychus urticae Koch, Frankliniella occidentalis (Pergande), and Trialeurodes vaporariorum (Westwood) were also consumed. Myzus persicae (Sulzer) …

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Physiological Responses Of Two Turkish Rice (Oryza Sativa L.) Varieties To Salinity, Özgür Tatar, Holger Brueck, Mi̇that Nuri̇ Gevrek, Folkard Asch Jan 2010

Physiological Responses Of Two Turkish Rice (Oryza Sativa L.) Varieties To Salinity, Özgür Tatar, Holger Brueck, Mi̇that Nuri̇ Gevrek, Folkard Asch

Turkish Journal of Agriculture and Forestry

Effects of salinity (60 mM NaCl) on 2 Turkish rice varieties (Kıral and Yavuz) were studied in comparison to 2 international check varieties (IR4630-22-2 tolerant and IR31785-58-1-2-3-3 susceptible) in 2 hydroponic and 1 outdoor soil-based pot experiments. Partitioning of dry matter, leaf chlorophyll concentration, K^+ and Na^+ uptake, and proline accumulation in the leaves were investigated under both control and salt stress conditions. Dry matter accumulation decreased with salt stress in all varieties, with the decreases being more pronounced in IR31785 and Kıral. The results showed that the varieties tested expressed different adaptation mechanisms under salt stress; however, the increase …

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Pathogen Reduction Effects Of Solar Drying And Soil Application In Sewage Sludge, Nurtaç Öğleni̇, Sai̇m Özdemi̇r Jan 2010

Pathogen Reduction Effects Of Solar Drying And Soil Application In Sewage Sludge, Nurtaç Öğleni̇, Sai̇m Özdemi̇r

Turkish Journal of Agriculture and Forestry

The responses of sludge faecal coliforms, Salmonella, and Ascaris lumbricoides to heat drying, solar dehydration, and inactivation in soil are examined in this study. The presence of Salmonella in raw sludge cake after treatment was low, and absent for most of the cases. Likewise, the viable Ascaris eggs were not determined because of absent or low prevalence. Faecal coliforms, on the other hand, drastically decreased from 4.2 × 10^7 MPN g^{-1} Dry Solid (DS) to absence by heat drying. Faecal coliform numbers in solar and non-solar drying treatments were not declined below 1.0 × 10^3 MPN g^{-1} after drying to …

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Effect Of Glycinebetaine On Proline, Water Use, And Photosynthetic Efficiencies, And Growth Of Rice Seedlings Under Salt Stress, Suriyan Chaum, Chalermpol Kirdmanee Jan 2010

Effect Of Glycinebetaine On Proline, Water Use, And Photosynthetic Efficiencies, And Growth Of Rice Seedlings Under Salt Stress, Suriyan Chaum, Chalermpol Kirdmanee

Turkish Journal of Agriculture and Forestry

The aim of this investigation was to improve salt tolerance abilities prior to rice crop harvesting, including proline accumulation, pigment stabilization, water use efficiency (WUE), photosynthetic efficiency, and growth, by using exogenous foliar-sprayed glycinebetaine (Glybet). Pathumthani 1 (PT1) is reported to be a salt-sensitive cultivar and it was selected as a model plant. The proline content of PT1 rice was enriched by 50 mM of foliar-sprayed Glybet, thereby maintaining WUE and pigment stabilization, leading to high photosynthetic performance in chlorophyll a fluorescence and CO_2 assimilation, and increasing plant height when the plant was exposed to 150 mM of NaCl salt …

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Effect Of Foliar Applied Kinetin And Indole Acetic Acid On Maize Plants Grown Under Saline Conditions, Cengi̇z Kaya, Ati̇lla Levent Tuna, Abdulkadi̇r Mustafa Okant Jan 2010

Effect Of Foliar Applied Kinetin And Indole Acetic Acid On Maize Plants Grown Under Saline Conditions, Cengi̇z Kaya, Ati̇lla Levent Tuna, Abdulkadi̇r Mustafa Okant

Turkish Journal of Agriculture and Forestry

This study examined the effects of kinetin (KIN) and indoleacetic acid (IAA) sprayed on the leaves of salinity-stressed maize (Zea mays L. cv., DK 647 F1) plants grown in field conditions. Salt stress was created by adding 100 mM NaCl to the irrigation water through a drip irrigation system during the irrigation schedule. Kinetin (KIN), indole acetic acid (IAA), and their combinations were sprayed foliarly. Salt stress (S) reduced the total dry matter, grain yield, chlorophyll content, and relative water content (RWC), but increased electrolyte leakage and proline accumulation in the maize plants. Foliar applications of both KIN and IAA …

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Distribution Of Natural Radionuclides In Anthrosol-Type Soil, Ivana Vukasinovic, Aleksandar Djordjevic, Milos Rajkovic, Dragana Todorovic, Vladimir Pavlovic Jan 2010

Distribution Of Natural Radionuclides In Anthrosol-Type Soil, Ivana Vukasinovic, Aleksandar Djordjevic, Milos Rajkovic, Dragana Todorovic, Vladimir Pavlovic

Turkish Journal of Agriculture and Forestry

Taking into account the importance of distribution and transfer of radionuclides in the soil-water-plant system, especially in agricultural fields, in this study, natural radionuclide determination in regosol-type soil was performed. The correlations between main soil properties and the contents of natural isotopes ^{238}U, ^{226}Ra, ^{232}Th, and ^{40}K in agricultural soil and their distribution through the soil depth was studied. For determination of natural radionuclide activity concentration, we used the CANBERRA HPGe detector, applying the gamma spectrometry method. The investigation was performed on an experimental peach tree field characterized by a anthrosol type of soil, derived from the chernozem type of …

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Cover And Contents Jan 2010

Cover And Contents

Turkish Journal of Agriculture and Forestry

No abstract provided.

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Cover And Contents Jan 2010

Cover And Contents

Turkish Journal of Chemistry

No abstract provided.

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Quantum Chemical Studies On Tautomerism And Basicity Behavior Of Some 1,2,4-Triazole Derivatives, Cemi̇l Öğreti̇r, Yadi̇gar Gülseven Sidir, İsa Sidir, Erol Taşal Jan 2010

Quantum Chemical Studies On Tautomerism And Basicity Behavior Of Some 1,2,4-Triazole Derivatives, Cemi̇l Öğreti̇r, Yadi̇gar Gülseven Sidir, İsa Sidir, Erol Taşal

Turkish Journal of Chemistry

The acidity constants, relative stabilities, and tautomeric equilibrium constants of some 1,2,4-triazole derivatives were determined using the density functional theory (DFT) with the B3LYP method and 6-311G(d,p) basis set. The integral equation formalism version of the polarizable continuum model (IEFPCM) was used in the calculations of the aqueous phase. The calculated tautomeric equilibrium and relative stabilities values revealed that the 4H-1,2,4 triazole form for all studied molecules was favored over the 1H-1,2,4 triazole form. Protonation processes indicated the predominance of the 1H-1,2,4 triazole form over the 2H-1,2,4 triazole form. The correlation attempt between the experimental and the calculated acidity constants, …

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Determination Of Autoregressive Model Orders For Seizure Detection, Serap Aydin Jan 2010

Determination Of Autoregressive Model Orders For Seizure Detection, Serap Aydin

Turkish Journal of Electrical Engineering and Computer Sciences

In the present study, a step-wise least square estimation algorithm (SLSA), implemented in a Matlab package called as ARfit, has been newly applied to clinical data for estimation of the accurate Auto-Regressive (AR) model orders of both normal and ictal EEG series where the power spectral density (PSD) estimations are provided by the Burg Method. The ARfit module is found to be usefull in comparison to a large variety of traditional methods such as Forward Prediction Error (FPE), Akaike's Information Criteria (AIC), Minimum Description Lenght (MDL), and Criterion of Autoregressive Transfer function (CAT) for EEG discrimination. According to tests, the …

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Stator Resistance Estimation Using Ann In Dtc Im Drives, Mustafa Aktaş, H. İbrahi̇m Okumuş Jan 2010

Stator Resistance Estimation Using Ann In Dtc Im Drives, Mustafa Aktaş, H. İbrahi̇m Okumuş

Turkish Journal of Electrical Engineering and Computer Sciences

Torque control of induction motors (IM) requires accurate estimation of the flux in the motor. But the flux estimate, when estimated from the stator circuit variables, is highly dependent on the stator resistance of the IM. As a result, the flux estimate is prone to errors due to variation in the stator resistance, especially at low stator frequencies. In this paper, an Artificial Neural Network (ANN) is used to adjust the stator resistance of an IM. A back propagation training algorithm was used in training the neural network for the simulation. The proposed ANN resistance estimator has shown good performance …

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Artificial Neural Network Based Chaotic Generator For Cryptology, İlker Dalkiran, Kenan Danişman Jan 2010

Artificial Neural Network Based Chaotic Generator For Cryptology, İlker Dalkiran, Kenan Danişman

Turkish Journal of Electrical Engineering and Computer Sciences

Chaotic systems are sensitive to initial conditions, system parameters and topological transitivity and these properties are also remarkable for cryptanalysts. Noise like behavior of chaotic systems is the main reason of using these systems in cryptology. However some properties of chaotic systems such as synchronization, fewness of parameters etc. cause serious problems for cryptology. In this paper, to overcome disadvantages of chaotic systems, the dynamics of Chua's circuit namely x, y and z were modeled using Artificial Neural Network (ANN). ANNs have some distinctive capabilities like learning from experiences, generalizing from a few data and nonlinear relationship between inputs and …

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Nonlinear Dynamic Analysis Of Mitral Valve Doppler Signals: Surrogate Data Analysis, Esma Uzunhi̇sarcikli Jan 2010

Nonlinear Dynamic Analysis Of Mitral Valve Doppler Signals: Surrogate Data Analysis, Esma Uzunhi̇sarcikli

Turkish Journal of Electrical Engineering and Computer Sciences

In our study, the nonlinear dynamics of mitral valve Doppler signals from 32 healthy and 28 patients with mitral valve stenosis was evaluated using by the computation of Lyapunov exponents, correlation dimension values and surrogate data analysis. Two chaotic features are compared for healthy and patient subjects. It was found that the largest Lyapunov exponent and correlation dimension values derived from patient subjects were larger than that of healthy subjects (\rho < 0.005). Surrogate data analysis was performed to determine the chaotic dynamics of Doppler signals. It was observed that the original and surrogate data have similar spectral features. Receiver operating characteristic (ROC) curves were used to evaluate the nonlinearity character Area Under the curve (AUC) values were obtained as 0.99 and 0.978 for the largest Lyapunov exponent and correlation dimension values, respectively. According to these results, Doppler signals have a nonlinear dynamic property and the largest Lyapunov exponent. Correlation dimension features can be used to detect the change in blood flow velocity of patients with mitral valve stenosis.

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Washout Filter Based Control For The Hodgkin-Huxley Nerve Cell Dynamics, Reşat Özgür Doruk Jan 2010

Washout Filter Based Control For The Hodgkin-Huxley Nerve Cell Dynamics, Reşat Özgür Doruk

Turkish Journal of Electrical Engineering and Computer Sciences

In this work we present a washout filter based control approach for stabilizing the oscillations in Hodgkin-Huxley type neurons. The oscillations occur due to the bifurcations that arise from the potassium and sodium channel conductance deviations. The MATCONT toolbox software environment was used for analysis of the bifurcation points in conjunction with MATLAB. The simulations of the Hodgkin-Huxley (HH) model at those points are provided to validate the results obtained from the MATCONT software. Then a washout filter is proposed to stabilize the oscillations occur at the Hopf bifurcation points where the external current injection is used to provide the …

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A Novel Method For Lung Segmentation On Chest Ct Images: Complex-Valued Artificial Neural Network With Complex Wavelet Transform, Murat Ceylan, Yüksel Özbay, Osman Nuri̇ Uçan, Erkan Yildirim Jan 2010

A Novel Method For Lung Segmentation On Chest Ct Images: Complex-Valued Artificial Neural Network With Complex Wavelet Transform, Murat Ceylan, Yüksel Özbay, Osman Nuri̇ Uçan, Erkan Yildirim

Turkish Journal of Electrical Engineering and Computer Sciences

Image segmentation is an important step in many computer vision algorithms. The objective of segmentation is to obtained an optimal region of convergences (ROC). Error in this stage will impact all higher level activities. This paper focuses on a new efficient method denoted as Complex-Valued Artificial Neural Network with Complex Wavelet Transform (CWT-CVANN) for the segmentation of lung region on chest CT images. In this combined architecture is composed of two cascade stages: feature extraction with various levels of complex wavelet transform and segmentation with complex-valued artificial neural network. Here, 32 CT images of 6 female and 26 male patients …

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Sdre Optimal Control Of Drug Administration In Cancer Treatment, Mehmet İti̇k, Meti̇n Uymaz Salamci̇, Stephen Paul Banks Jan 2010

Sdre Optimal Control Of Drug Administration In Cancer Treatment, Mehmet İti̇k, Meti̇n Uymaz Salamci̇, Stephen Paul Banks

Turkish Journal of Electrical Engineering and Computer Sciences

In this study, we apply State Dependent Riccati Equation (SDRE) based optimal control technique to a nonlinear tumor growth model. The model consists of three biological cells which are normal tissue, tumor and immune cells. The effect of chemotherapy treatment is also included in the model. Chemotherapy administration is considered as a control input to the nonlinear cancer dynamics and the amount of administered drug is determined by using SDRE optimal control. The optimal control is applied to the model in order not only to drive the tumor cells to the healthy equilibrium state but also to minimize the amount …

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Using Covariates For Improving The Minimum Redundancy Maximum Relevance Feature Selection Method, Olcay Kurşun, Cemal Okan Şakar, Oleg Favorov, Ni̇zametti̇n Aydin, Sadik Fi̇kret Gürgen Jan 2010

Using Covariates For Improving The Minimum Redundancy Maximum Relevance Feature Selection Method, Olcay Kurşun, Cemal Okan Şakar, Oleg Favorov, Ni̇zametti̇n Aydin, Sadik Fi̇kret Gürgen

Turkish Journal of Electrical Engineering and Computer Sciences

Maximizing the joint dependency with a minimum size of variables is generally the main task of feature selection. For obtaining a minimal subset, while trying to maximize the joint dependency with the target variable, the redundancy among selected variables must be reduced to a minimum. In this paper, we propose a method based on recently popular minimum Redundancy-Maximum Relevance} (mRMR) criterion. The experimental results show that instead of feeding the features themselves into mRMR, feeding the covariates improves the feature selection capability and provides more expressive variable subsets.

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Performance Analysis Of Swarm Optimization Approaches For The Generalized Assignment Problem In Multi-Target Tracking Applications, Ali̇ Önder Bozdoğan, Asim Egemen Yilmaz, Murat Efe Jan 2010

Performance Analysis Of Swarm Optimization Approaches For The Generalized Assignment Problem In Multi-Target Tracking Applications, Ali̇ Önder Bozdoğan, Asim Egemen Yilmaz, Murat Efe

Turkish Journal of Electrical Engineering and Computer Sciences

The aim of this study is to investigate the suitability of selected swarm optimization algorithms to the generalized assignment problem as encountered in multi-target tracking applications. For this purpose, we have tested variants of particle swarm optimization and ant colony optimization algorithms to solve the 2D generalized assignment problem with simulated dense and sparse measurement/track matrices and compared their performance to that of the auction algorithm. We observed that, although with some modification swarm optimization algorithms provide improvement in terms of speed, they still fall behind the auction algorithm in finding the optimum solution to the problem. Among the investigated …

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Nontrivial Periodic Solutions Of Nonlinear Functional Differential Systems With Feedback Control, Yingxin Guo Jan 2010

Nontrivial Periodic Solutions Of Nonlinear Functional Differential Systems With Feedback Control, Yingxin Guo

Turkish Journal of Mathematics

This paper examines the existence of nontrivial periodic solutions for the nonlinear functional differential system with feedback control: \{\aligned x'(t)=x(t)a(t)-\big[\sum_{i=1}^n a_i(t)\int_0^{+\infty} f(t, x(t-\theta)) d}\varphi_i(\theta) +\sum_{j=1}^m b_j(t) \int_0^{+\infty} f(t,x'(t-\theta))\,d}\phi_j(\theta)+\sum_{\mu=1}^p c_\mu(t) \int_0^{\infty} u(t-\theta)\,d}\delta_\mu(\theta)\big], u'(t)=-\rho(t)u(t)+\sum_{\nu=1}^q \beta_\nu(t) \int_0^{\infty} f(t, x(t-\theta))\,d}\psi_\nu(\theta).\endaligned Under certain growth conditions on the nonlinearity f, several sufficient conditions for the existence of nontrivial solution are obtained by using Leray-Schauder nonlinear alternative.

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Cover And Contents Jan 2010

Cover And Contents

Turkish Journal of Mathematics

No abstract provided.

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Chemical Composition And Antimicrobial Activity Of The Essential Oils Of Mosses (Tortula Muralis Hedw., Homalothecium Lutescens (Hedw.) H. Rob., Hypnum Cupressiforme Hedw., And Pohlia Nutans (Hedw.) Lindb.) From Turkey, Osman Üçüncü, Tayyi̇be Beyza Cansu, Turan Özdemi̇r, Şengül Alpay Karaoğlu, Nuretti̇n Yayli Jan 2010

Chemical Composition And Antimicrobial Activity Of The Essential Oils Of Mosses (Tortula Muralis Hedw., Homalothecium Lutescens (Hedw.) H. Rob., Hypnum Cupressiforme Hedw., And Pohlia Nutans (Hedw.) Lindb.) From Turkey, Osman Üçüncü, Tayyi̇be Beyza Cansu, Turan Özdemi̇r, Şengül Alpay Karaoğlu, Nuretti̇n Yayli

Turkish Journal of Chemistry

The essential oils of mosses [Tortula muralis Hedw. (Pottiaceae), Homalothecium lutescens (Hedw.) H. Rob. (Brachytheciaceae), Hypnum cupressiforme Hedw. (Hypnaceae), and Pohlia nutans (Hedw.) Lindb. (Mniaceae)] were investigated by means of GC-FID/MS techniques. The major components were nonanal (18.3%) and tetradecanol (4.3%) in the oil of T. muralis, nonanal (36.8%) and tricosane (6.5%) in the oil of H. lutescens, nonanal (12.5%) and 2E-tetradecen-1-ol (6.9%) in the oil of H. cupressiforme, and nonanal (7.8%) and 2E-tetradecen-1-ol (7.1%) in the oil of P. nutans. The essential oils of T. muralis, H. lutescens, H. cupressiforme, and P. nutans were rich as in non-terpenoid components …

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Cover And Contents Jan 2010

Cover And Contents

Turkish Journal of Chemistry

No abstract provided.

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Determination Of Trace Element Contents Of Thymus Species From Turkey, Fatümetüzzehra Küçükbay, Ebru Kuyumcu Jan 2010

Determination Of Trace Element Contents Of Thymus Species From Turkey, Fatümetüzzehra Küçükbay, Ebru Kuyumcu

Turkish Journal of Chemistry

Eleven mineral and trace elements (Mg, Ca, K, Fe, Mn, Al, Zn, Cu, Cd, Ni, and Pb) were determined in the Thymus species growing in Turkey. The total concentrations were measured in samples mineralized with concentrated nitric acid and hydrogen peroxide in a microwave system. The determination of mineral and trace elements in the leaves of the Thymus species was carried out by flame and graphite furnace atomic absorption spectrometry. The accuracy of the method was ensured by using standard reference material (NIST-SRM 1515 apple leaves). The concentration of elements in the Thymus species and their biological activity on humans …

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Nile Blue-Hexacyanoferrate Carbon Paste Modified Electrode As An Amperometric Sensor For Determination Of Hydrazine, Reza Sabzi, Elnaz Minaie, Khalil Farhadi, Mirmaqsoud Golzan Jan 2010

Nile Blue-Hexacyanoferrate Carbon Paste Modified Electrode As An Amperometric Sensor For Determination Of Hydrazine, Reza Sabzi, Elnaz Minaie, Khalil Farhadi, Mirmaqsoud Golzan

Turkish Journal of Chemistry

The main problem associated with metal hexacyanoferrates (MHCFs) is their instability at high pH values. We synthesized a new Prussian Blue analogue, Nile-Blue hexacyanoferrate (NBHCF), that remains stable in 0.2 M KOH. A carbon paste (CPE) chemically modified electrode (ME) containing NBHCF was prepared as a stable electrochemical sensor for measuring hydrazine. A detailed characterization of the electrochemical and electrocatalytic behavior of NBHCF was performed using cyclic voltammetric, chronoamperometric, differential pulse voltammetric (DPV) and hydrodynamic amperometric methods. The NBHCF-modified electrode produced reproducible redox peaks and resulted in a linear increase in the oxidation signal of hydrazine with increasing concentration of …

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Effects Of Adenosine A1 Receptor Agonist Ccpa And Antagonist Dpcpx On Ischemia/Reperfusion-Induced Arrhythmias In Rats*, Ömer Bozdoğan, Ersöz Gonca, Nuran Ekerbi̇çer Jan 2010

Effects Of Adenosine A1 Receptor Agonist Ccpa And Antagonist Dpcpx On Ischemia/Reperfusion-Induced Arrhythmias In Rats*, Ömer Bozdoğan, Ersöz Gonca, Nuran Ekerbi̇çer

Turkish Journal of Medical Sciences

Adenosine has been commonly used to treat supraventricular tachycardia in clinics. However, there are only a few studies on the effects of adenosine on ischemia or reperfusion induced arrhythmia and they conflict with the results of the present study. During this study, we aimed to clarify the effect of adenosine on ischemia-reperfusion induced arrhythmia. Materials and methods: Left coronary artery was ligated for 6 min and it was released for 15 min to produce reperfusion. A1 adenosine agonist CCPA (2 Chloro - N6 - Cyclopentyl-adenosine), and A1 selective antagonist DPCPX (8 - Cyclopentyl - 1,3 -dipropylxanthine) in 5 µg/kg dose …

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Marital Adjustment And Emotional Symptoms In Infertile Couples: Gender Differences, Verda Tüzer, Altuğ Tuncel, Sema Göka, Süheyla Doğan Bulut, Fati̇h Volkan Yüksel, Ali̇ Atan, Erol Göka Jan 2010

Marital Adjustment And Emotional Symptoms In Infertile Couples: Gender Differences, Verda Tüzer, Altuğ Tuncel, Sema Göka, Süheyla Doğan Bulut, Fati̇h Volkan Yüksel, Ali̇ Atan, Erol Göka

Turkish Journal of Medical Sciences

To determine the psychosocial and demographic factors related to marital adjustment and emotional symptoms in infertile couples according to gender differences. Materials and methods: The study sample, consisting of 60 primary infertile couples, was assessed using the Beck Depression Inventory, State and Trait Anxiety Inventory, and Dyadic Adjustment Scale. The scores derived from men and women were compared according to infertility factor. Multiple regression analysis models were used to explore the linkages between emotional symptoms and marital adjustment. Results: Statistically significant gender differences were noted in affectional expression and sexual satisfaction domains of the Dyadic Adjustment Scale (P < 0.05). Our analyses showed that various aspects of marital adjustment have predictive power on anxiety and depressive symptoms of infertile men, especially when the infertility is due to male factor. Conclusion: Results of this study emphasize the importance of psychological and sexual counseling in the course of infertility treatment.

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Anti-Diabetic Activity Of Tinospora Cordifolia (Willd.) In Streptozotocin Diabetic Rats; Does It Act Like Sulfonylureas?, Nagaraja Puranik, Kararashah Fakruddin Kammar, Sheela Devi Jan 2010

Anti-Diabetic Activity Of Tinospora Cordifolia (Willd.) In Streptozotocin Diabetic Rats; Does It Act Like Sulfonylureas?, Nagaraja Puranik, Kararashah Fakruddin Kammar, Sheela Devi

Turkish Journal of Medical Sciences

As an alternative medicine to treat diabetes mellitus, many herbal drugs are being studied throughout the world. In the present study, an attempt was made to investigate the anti-diabetic activity of Tinospora cordifolia (Willd.) (TC) stem extracts (both aqueous and alcoholic) in different dosages (200 and 400 mg/kg b.w.) in streptozotocin diabetic albino rats. The probable mechanism by which TC may act as an anti-hyperglycemic drug was also investigated. Materials and methods: The drug was administered orally for 10 days and 30 days in different groups of animal, with each group containing 6 animals. The efficacy of this drug was …

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Trace Elements And Physical Activity In Children And Adolescents With Depression, M. Meti̇n Donma, Orki̇de Donma Jan 2010

Trace Elements And Physical Activity In Children And Adolescents With Depression, M. Meti̇n Donma, Orki̇de Donma

Turkish Journal of Medical Sciences

Depression is a common mental health problem among adolescents. Depressive symptoms are also important and may appear even during the preschool period. Physical activity, which may improve some mental health problems, is inversely associated with depression. Due to the presence of some clinical evidence about the relation between the use of antidepressants and suicide, there is a need for supportive agents during antidepressant therapy. Within this context, essential trace elements gain importance for further consideration. Protection of the developing brain from the negative effects of iron deficiency is important because of iron deficiency's association with poor mental development. Reactions between …

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Psychological Characteristics Of Adolescent Suicide Attempters Presenting To A Pediatric Emergency Service, Di̇lek Di̇lli̇, Yildiz Dallar, İlyas Çakir Jan 2010

Psychological Characteristics Of Adolescent Suicide Attempters Presenting To A Pediatric Emergency Service, Di̇lek Di̇lli̇, Yildiz Dallar, İlyas Çakir

Turkish Journal of Medical Sciences

To determine the sociodemographic and behavioral characteristics of adolescents who attempt suicide and evaluate them by different scales. Materials and methods: The study was conducted with 116 adolescent suicide attempters and 98 age-matched healthy controls. Results: The mean age of all adolescents was 13.8 ± 1.2 years, with ages ranging from 11 to 16 years. Of these adolescents, 82.7% were girls. The total Suicide Probability Scale score was negatively correlated with the total Reasons for Living Inventory (r = -0.42, P = 0.001) and positively correlated with the Problem Solving Inventory score, which is indicative of low problem-solving capabilities (r …

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Caustic Esophageal Injury Decreases The Number Of Interstitial Cells Of Cajal In The Rat Esophagus, Tutku Soyer, Şebnem Ayva, Sali̇h Somuncu, Pinar Atasoy, Turan Kanmaz, Murat Çakmak Jan 2010

Caustic Esophageal Injury Decreases The Number Of Interstitial Cells Of Cajal In The Rat Esophagus, Tutku Soyer, Şebnem Ayva, Sali̇h Somuncu, Pinar Atasoy, Turan Kanmaz, Murat Çakmak

Turkish Journal of Medical Sciences

To evaluate the effect of caustic esophageal injury (CEI) on the number of interstitial cells of Cajal (ICC). Materials and methods: Wistar rats were divided into 3 groups: control, acid, and alkali induced CEI. CEI was performed by the injection of 1 mL of 10% hypochloric acid in the acid group, and 1 mL of 10% sodium hydroxide was injected into the alkali group. Distal esophageal segments were removed 24 h after injection. CEI was graded and the number of ICC were investigated (CD-117 staining). The number of ICC was compared in groups and correlated with CEI grades. Results: Typical …

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