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Articles 17731 - 17760 of 18793
Full-Text Articles in Entire DC Network
Determination Of Airborne Lead Contamination In Cichorium Intybus L. In An Urban Environment, Di̇lmaç Yakupoğlu, Tüli̇n Güray, Deni̇z Yurtsever Sarica, Zeki̇ Kaya
Determination Of Airborne Lead Contamination In Cichorium Intybus L. In An Urban Environment, Di̇lmaç Yakupoğlu, Tüli̇n Güray, Deni̇z Yurtsever Sarica, Zeki̇ Kaya
Turkish Journal of Botany
The major source of environmental lead (Pb) is the combustion of leaded gasoline. After emission as exhaust, lead in the air falls to earth and contaminates soil and plants. Seventeen wild chicory (Cichorium intybus L.) plant samples were collected from each of 2 urban sites in Ankara, one is located at the road side of major intercity road (heavy traffic) and the other one is located in relatively less traffic area that is about 1 km away from the first location. Lead content of chicory plants were analyzed by a flame atomic absorption spectrophotometer. The mean lead concentrations in the …
Verbascum Samniticum Ten. (Scrophulariaceae): A New Record For The Flora Of Turkey, Gülden Yilmaz, Feruzan Dane
Verbascum Samniticum Ten. (Scrophulariaceae): A New Record For The Flora Of Turkey, Gülden Yilmaz, Feruzan Dane
Turkish Journal of Botany
Verbascum samniticum Ten. (Scrophulariaceae) is recorded for the first time for the flora of Turkey with the specimen collected from A1(E) Kırklareli. A description of the species and descriptive illustrations are given based on the collected specimen. Its relationship with V. phlomoides L. is discussed.
Theodor Von Heldreich (1822-1902) And His Turkish Collections, Asuman Baytop, Kit Tan
Theodor Von Heldreich (1822-1902) And His Turkish Collections, Asuman Baytop, Kit Tan
Turkish Journal of Botany
The distinguished German botanist Theodor von Heldreich (1822-1902) visited Anatolia on at least 6 separate occasions as documented by specimens cited in Flora of Turkey and Flora Orientalis. His first visit was in 1845 and his last, to İzmir, in 1852. Within this period of less than seven years he collected c. 3000 sets of specimens. They included the types of nearly 200 new taxa and, if including syntypes and lectotypes, the figure is 207. The majority stem from the first expedition of 1845. The non-type specimens cited in the Flora are 280. It is difficult to trace Heldreich´s itinerary …
Contribution To The Empis (Subgenus Empis) (Empididae, Diptera) Fauna Of Turkey, Mustafa Cemal Çi̇ftçi̇, Abdullah Hasbenli̇
Contribution To The Empis (Subgenus Empis) (Empididae, Diptera) Fauna Of Turkey, Mustafa Cemal Çi̇ftçi̇, Abdullah Hasbenli̇
Turkish Journal of Zoology
Specimens of the subgenus Empis collected from different parts of Turkey between 1992 and 2006 were evaluated. Ten species of this genus were identified and 9 of these are the first records for the Turkish fauna.
First Record Of The Eucalyptus Seed Gall Wasp, Quadrastichodella Nova Girault, 1922, (Eulophidae: Tetrastichinae) From Turkey, Oğuzhan Doğanlar, Mi̇kdat Doğanlar
First Record Of The Eucalyptus Seed Gall Wasp, Quadrastichodella Nova Girault, 1922, (Eulophidae: Tetrastichinae) From Turkey, Oğuzhan Doğanlar, Mi̇kdat Doğanlar
Turkish Journal of Zoology
The present study was carried out during 2006 and 2007 in a eucalyptus planted area in the Mediterranean region of Turkey. The eulophid species Quadrastichodella nova Girault (Hymenoptera: Eulophidae: Tetrastichinae) was collected on Eucalyptus spp. seed capsules for the first time in Turkey. This species induces galls on the seeds, attaining low levels of infestation. The plant species Eucalyptus camaldulensis L. (Myrtaceae) is reported as new host for Q. nova.
Some Earthworm Records From Anatolia (Oligochaeta, Lumbricidae), Mete Misirlioğlu
Some Earthworm Records From Anatolia (Oligochaeta, Lumbricidae), Mete Misirlioğlu
Turkish Journal of Zoology
The goal of this study was to provide additional data on the poorly known earthworm fauna of Anatolia. During the study earthworms from 16 different localities were identified, which resulted in a list of 11 species belonging to 7 genera.
Cover And Contents
Turkish Journal of Veterinary & Animal Sciences
No abstract provided.
Cover And Contents
Turkish Journal of Veterinary & Animal Sciences
No abstract provided.
Ear Lobule Flap For Reconstruction Of A Near Total Auricle Defect, Bi̇rol Ci̇velek, Ercan Demi̇rbağ, Uğur Çakmak, Tayyar Selçuk, Seli̇m Çelebi̇oğlu
Ear Lobule Flap For Reconstruction Of A Near Total Auricle Defect, Bi̇rol Ci̇velek, Ercan Demi̇rbağ, Uğur Çakmak, Tayyar Selçuk, Seli̇m Çelebi̇oğlu
Turkish Journal of Medical Sciences
A number of surgical procedures can be performed for partial auricular defects occurring due to various causes. The most appropriate reconstruction method should be employed with regard to the defect dimensions and the status of local adjacent tissues. We present a case of near total excision of external ear due to recurrent basal cell carcinoma and the reconstruction of the defect with ear lobule flap.
My Collaboration With Raj Mittra: Contributions To The Theory Of Perfectly Matched Layers, Mustafa Kuzuoğlu
My Collaboration With Raj Mittra: Contributions To The Theory Of Perfectly Matched Layers, Mustafa Kuzuoğlu
Turkish Journal of Electrical Engineering and Computer Sciences
No abstract provided.
Cover And Contents
Turkish Journal of Electrical Engineering and Computer Sciences
No abstract provided.
Method Of Moments Solution By Using Sinc-Type Basis Functions For The Scattering From A Finite Number Of Conducting Strip Gratings, Taner Oğuzer, Fadil Kuyucuoğlu
Method Of Moments Solution By Using Sinc-Type Basis Functions For The Scattering From A Finite Number Of Conducting Strip Gratings, Taner Oğuzer, Fadil Kuyucuoğlu
Turkish Journal of Electrical Engineering and Computer Sciences
A numerical method of moments (MoM) solution is applied to the electromagnetic scattering from a periodic finite conducting strip array when the incident electromagnetic plane wave E and H polarizations illuminate the grating. For such grating strip geometry, we deal with singular integral equations arising from Neumann and Dirichlet boundary conditions. MoM is applied using band-limited sinc functions as basis and testing functions. The Galerkin approach is followed in MoM formulation. The properties of the sinc function, with the infinite integral, are exploited in the computations of the main matrix elements. Also, the error in our approach goes to zero …
A New Approach Using Temporal Radial Basis Function In Chronological Series, Mustapha Guezouri
A New Approach Using Temporal Radial Basis Function In Chronological Series, Mustapha Guezouri
Turkish Journal of Electrical Engineering and Computer Sciences
In this paper, we present an extended form of Radial Basis Function network called Temporal-RBF (T-RBF) network. This extended network can be used in decision rules and classification in Spatio-Temporal domain applications, like speech recognition, economic fluctuations, seismic measurements and robotics applications. We found that such a network complies with relative ease to constraints such as capacity of universal approximation, sensibility of node, local generalisation in receptive field, etc. For an optimal solution based on a probabilistic approach with a minimum of complexity, we propose two TRBF models (1 and 2). Application to the problem of Mackey-Glass time series has …
Cover And Contents
Turkish Journal of Electrical Engineering and Computer Sciences
No abstract provided.
Role Of Artificial Intelligence In The Reliability Evaluation Of Electric Power Systems, Chanan Singh, Lingfeng Wang
Role Of Artificial Intelligence In The Reliability Evaluation Of Electric Power Systems, Chanan Singh, Lingfeng Wang
Turkish Journal of Electrical Engineering and Computer Sciences
Every reliability analysis effort, in some way, involves searching the state space of the system for those states that represent the events of interest, typically failure of the system or a given node to meet the demand. This essentially translates into a search procedure to efficiently identify states to be examined and then using a mechanism to evaluate these states. Traditionally, reliability analysis methods are based either on an implicit or explicit enumeration process or Monte Carlo sampling. More recently, methods based on artificial intelligence have been investigated both as an alternative to Monte Carlo for the search process as …
Acute Intoxication By Endosulfan: Any Role Of N-Acetylcysteine Therapy?, Ahmet Demi̇rcan, Eli̇f Çalidağ, Murat Özsaraç, Ayfer Keleş, Fi̇kret Bi̇ldi̇k
Acute Intoxication By Endosulfan: Any Role Of N-Acetylcysteine Therapy?, Ahmet Demi̇rcan, Eli̇f Çalidağ, Murat Özsaraç, Ayfer Keleş, Fi̇kret Bi̇ldi̇k
Turkish Journal of Medical Sciences
Reactive oxygen species may play a role in the mediation of acetaminophen (APAP) hepatotoxicity. N-acetylcysteine (NAC) is the standard therapy for treatment of the APAP overdose patient. The suspected mechanism of hepatic injury appears to be similar to that of APAP and the empiric use of NAC may be justified, especially in significant endosulfan poisoning. An 18-year-old male presented to the emergency department because of unconsciousness and seizure that developed after acute intentional ingestion of endosulfan. Severe diaphoresis was noted and he had a Glasgow Coma Score of 7 (E1M4V2). Within 8 hours of his arrival in the emergency department, …
Determination Of Iridoid Glycosides From Four Turkish Lamium Species By Hplc-Esi/Ms, Funda Nuray Yalçin, Duygu Kaya, İhsan Çaliş, Tayfun Ersöz, Erhan Palaska
Determination Of Iridoid Glycosides From Four Turkish Lamium Species By Hplc-Esi/Ms, Funda Nuray Yalçin, Duygu Kaya, İhsan Çaliş, Tayfun Ersöz, Erhan Palaska
Turkish Journal of Chemistry
An HPLC-ESI/MS method that enables fast detection and identification of iridoid glycosides is described. Eleven iridoid glycosides known to occur in the genus Lamium-lamalbide, sesamoside, 6-\beta-OH ipolamiide, shanzhiside methyl ester, dehydropenstemoside, barlerin (= 8-O-acetylshanzhiside methyl ester), 6-O-syringyl-8-O- acetylshanzhiside methyl ester, lamerioside, lamiide, eriobioside, and ipolamiide, were identified by means of their retention time and ESI/MS data. This method was successfully applied to the identification of the iridoid composition of the n-butanol extracts of Lamium eriocephalum Bentham subsp. eriocephalum, L. garganicum L. subsp. pulchrum R. Mill, L. garganicum L. subsp. laevigatum Arcangeli, and L. purpureum L. var. purpureum from the Turkish …
The Kinetics And Mechanism Of Ruthenium(Iii)-Catalyzed Oxidation Of Tris(2-Amino Ethyl)Amine By Hexacyanoferrate(Iii) In Aqueous Alkaline Medium, Radhey Mohan Naik, Abhishek Srivastava, Amit Kumar Verma
The Kinetics And Mechanism Of Ruthenium(Iii)-Catalyzed Oxidation Of Tris(2-Amino Ethyl)Amine By Hexacyanoferrate(Iii) In Aqueous Alkaline Medium, Radhey Mohan Naik, Abhishek Srivastava, Amit Kumar Verma
Turkish Journal of Chemistry
The kinetics of ruthenium(III)-catalyzed oxidation of TREN, i.e. tris(2-amino ethyl)amine(3-hydrochloride) by an outer sphere electron transfer oxidant, potassium hexacyanoferrate(III), was investigated spectrophotometrically in aqueous alkaline medium. The extent of the reaction was followed by registering a decrease in absorbance at 420 nm (\lambda_{max} of Fe(CN)_6^{3-}) due to its consumption as a function of [OH^-], ionic strength, [Fe(CN)_6^{3-}], [TREN], and temperature by varying only one variable at a time and keeping all other variables constant. The rate data indicate that the reaction exhibited first order dependence in [oxidant] and at a lower concentrations of reductant. The overall reaction follows second order …
Preparation Of Palladium Composite Membranes On Pore Structure Modified And Non-Modified Supports By Electroless Plating Procedure, Sali̇ha Kiliçarslan, Osman Muzaffer Afyon, Meltem Doğan
Preparation Of Palladium Composite Membranes On Pore Structure Modified And Non-Modified Supports By Electroless Plating Procedure, Sali̇ha Kiliçarslan, Osman Muzaffer Afyon, Meltem Doğan
Turkish Journal of Chemistry
The effects of pore structure of the support on the plating morphology, thickness, and composition were investigated in an electroless plating procedure. Some of the plating studies were carried out directly on commercially available porous glass supports, while others were performed on modified supports. Two modification steps with alumina were applied on tubular supports. Formation of a 60-\mu m-thick layer on the modified support was detected by SEM analysis after the first 2 plating steps, while layer formation was not observed on the non-modified support. It was shown that the formation of a new layer started on the modified support, …
Examination Of The Electroanalytic Performance Of Carbon Nanotube (Cnt) Modified Carbon Paste Electrodes As Xanthine Biosensor Transducers, Ülkü Anik, Meli̇ha Çubukçu
Examination Of The Electroanalytic Performance Of Carbon Nanotube (Cnt) Modified Carbon Paste Electrodes As Xanthine Biosensor Transducers, Ülkü Anik, Meli̇ha Çubukçu
Turkish Journal of Chemistry
The effect of multi-walled carbon nanotube (MWCNT) and single-wall carbon nanotube (SWCNT) on carbon paste electrode (CPE) electrochemical response was examined by introducing various portions of CNT into the CPE. The optimum electrode structure was determined by comparing the prepared electrodes´ electroanalytical performance towards ferricyanide. Then these optimum compositions were modified with xanthine oxidase (XO) enzyme for obtaining a xanthine biosensor. After the optimization of biosensor working conditions, the developed systems were characterized for xanthine. Linearity was obtained in the concentration range between 1 and 100 \mu M xanthine with an RSD value of 3.35% for MWCNT-CPE, while with SWCNT-CPE …