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Neotectonic Characteristics Of The İnönü-Eskişehir Fault System In The Kaymaz (Eskişehir) Region: Influence On The Development Of The Mahmudiye-Çifteler-Emirdağ Basin, Azad Selçuk, Yaşar Ergün Gökten
Neotectonic Characteristics Of The İnönü-Eskişehir Fault System In The Kaymaz (Eskişehir) Region: Influence On The Development Of The Mahmudiye-Çifteler-Emirdağ Basin, Azad Selçuk, Yaşar Ergün Gökten
Turkish Journal of Earth Sciences
The İnönü-Eskişehir Fault System (İEFS) is a NW- to WNW-trending zone of active deformation about 15-25 km wide, 400 km long and characterized predominatly by strike-slip faulting. In this study, the Yörükkaracaören (SE of Eskişehir)-Sivrihisar section of the İEFS was investigated. The system consists of three fault zones, namely the Alpu Fault Zone (AFZ), the Eskişehir Fault Zone (EFZ) and the Orhaniye Fault Zone (OFZ) in the study area. The EFZ is made up mostly of N30°W-trending right-lateral strike-slip fault segments with normal components. However, the AFZ and OFZ are composed of E-W-trending normal and NE- to NW-trending strike-slip fault …
Estimating Wetting Front Coordinates Under Surface Trickle Irrigation, Ahad Molavi, Aliashraf Sadraddini, Amir Hossein Nazemi, Ahmad Fakheri Fard
Estimating Wetting Front Coordinates Under Surface Trickle Irrigation, Ahad Molavi, Aliashraf Sadraddini, Amir Hossein Nazemi, Ahmad Fakheri Fard
Turkish Journal of Agriculture and Forestry
In this study, wetting front or wetted bulb coordinates in soil under surface trickle irrigation were measured for 1 loam soil and 2 sandy loam soils with 2 different emitter discharges of 2 and 4 L h^{-1} by using the trenching method. A model is presented for estimating wetted bulb coordinates with a function of emitter discharge, water application time, average variation in volumetric water content, and saturated hydraulic conductivity of soil. For calculating the distance of the maximum wet surface, relationships are presented based on saturated hydraulic conductivity and water application time. By comparison of measured values of wetting …
Approximate Groups Iii: The Unitary Case, Emmanuel Breuillard, Ben Green
Approximate Groups Iii: The Unitary Case, Emmanuel Breuillard, Ben Green
Turkish Journal of Mathematics
By adapting the classical proof of Jordan's theorem on finite subgroups of linear groups, we show that every approximate subgroup of the unitary group U_n(C) is almost abelian.
Groupoids, Imaginaries And Internal Covers, Ehud Hrushovski
Groupoids, Imaginaries And Internal Covers, Ehud Hrushovski
Turkish Journal of Mathematics
Let T be a first-order theory. A correspondence is established between internal covers of models of T and definable groupoids within T. We also consider amalgamations of independent diagrams of algebraically closed substructures, and find strong relation between covers, uniqueness for 3-amalgamation, existence of 4-amalgamation, imaginaries of T^\si, and definable groupoids. As a corollary, we describe the imaginary elements of families of finite-dimensional vector spaces over pseudo-finite fields.
On \Alpha-Skew Mccoy Modules, Jian Cui, Jianlong Chen
On \Alpha-Skew Mccoy Modules, Jian Cui, Jianlong Chen
Turkish Journal of Mathematics
Let \alpha be a ring endomorphism. Extending the notions of McCoy modules and \alpha-skew McCoy rings, we introduce the notion of \alpha-skew McCoy modules, which can also be regarded as a generalization of \alpha-skew Armendariz modules. A number of illustrative examples are given. Various properties of these modules are developed, and equivalent conditions for \alpha-skew McCoy modules are established. Furthermore, we study the relationship between a module and its polynomial module.
On Some New Inequalities For Convex Functions, Mevlüt Tunç
On Some New Inequalities For Convex Functions, Mevlüt Tunç
Turkish Journal of Mathematics
In the present paper we establish some new integral inequalities analogous to the well known Hadamard's inequality by using a fairly elementary analysis.
An Oscillation Theorem For Second-Order Nonlinear Differential Equations Of Euler Type, Asadollah Aghajani, Vahid Roomi
An Oscillation Theorem For Second-Order Nonlinear Differential Equations Of Euler Type, Asadollah Aghajani, Vahid Roomi
Turkish Journal of Mathematics
We consider the nonlinear equation t^2x'' + g(x) = 0, where g(x) satisfies xg(x) > 0 for x \ne 0, but is not assumed to be sublinear or superlinear. We study the problem whether all nontrivial solutions of the equation are oscillatory in some critical cases.
A Generalization Of Banach's Contraction Principle For Some Non-Obviously Contractive Operators In A Cone Metric Space, Yingxin Guo
Turkish Journal of Mathematics
This paper investigates the fixed points for self-maps of a closed set in a space of abstract continuous functions. Our main results essentially extend and generalize some fixed point theorems in cone metric spaces. An application to differential equations is given.
Marcinkiewicz-Fejer Means Of Double Conjugate Walsh-Kaczmarz-Fourier Series And Hardy Spaces, Ushangi Goginava, Karoly Nagy
Marcinkiewicz-Fejer Means Of Double Conjugate Walsh-Kaczmarz-Fourier Series And Hardy Spaces, Ushangi Goginava, Karoly Nagy
Turkish Journal of Mathematics
In the present paper we prove that for any 0 < p \leq 2/3 there exists a martingale f in H_p such that the Marcinkiewicz-Fejér means of double conjugate Walsh-Kaczmarz-Fourier series of the martingale f is not uniformly bounded in the space L_p.
Geodesicity And Isoclinity Properties For The Tangent Bundle Of The Heisenberg Manifold With Sasaki Metric, Simona Luiza Druta, Paola Piu
Geodesicity And Isoclinity Properties For The Tangent Bundle Of The Heisenberg Manifold With Sasaki Metric, Simona Luiza Druta, Paola Piu
Turkish Journal of Mathematics
We prove that the horizontal and vertical distributions of the tangent bundle with the Sasaki metric are isocline, the distributions given by the kernels of the horizontal and vertical lifts of the contact form \omega on the Heisenberg manifold (H_3,g) to (TH_3,g^S) are not totally geodesic, and the distributions F^H=L(E_1^H,E_2^H) and F^V=L(E_1^V,E_2^V) are totally geodesic, but they are not isocline. We obtain that the horizontal and natural lifts of the curves from the Heisenberg manifold (H_3,g), are geodesics on the tangent bundle endowed with the Sasaki metric (TH_3,g^s), if and only if the curves considered on the base manifold are …
Ion Probe U-Pb Dating Of The Central Sakarya Basement: A Peri-Gondwana Terrane Intruded By Late Lower Carboniferous Subduction/Collision-Related Granitic Rocks, Petek Ayda Ustaömer, Ti̇mur Ustaömer, Alastair Robertson
Ion Probe U-Pb Dating Of The Central Sakarya Basement: A Peri-Gondwana Terrane Intruded By Late Lower Carboniferous Subduction/Collision-Related Granitic Rocks, Petek Ayda Ustaömer, Ti̇mur Ustaömer, Alastair Robertson
Turkish Journal of Earth Sciences
Ion probe dating is used to determine the relative ages of amphibolite-facies meta-clastic sedimentary rocks and crosscutting granitoid rocks within an important 'basement' outcrop in northwestern Turkey. U-Pb ages of 89 detrital zircon grains separated from sillimanite-garnet micaschist from the Central Sakarya basement terrane range from 551 Ma (Ediacaran) to 2738 Ma (Neoarchean). Eighty five percent of the ages are 90-110% concordant. Zircon populations cluster at ~550-750 Ma (28 grains), ~950-1050 Ma (27 grains) and ~2000 Ma (5 grains), with smaller groupings at ~800 Ma and ~1850 Ma. The first, prominent, population (late Neoproterozoic) reflects derivation from a source area …
Petrogenesis Of Late Cretaceous Adakitic Magmatism In The İstanbul Zone (Çavuşbaşı Granodiorite, Nw Turkey), Sabah Yilmaz Şahi̇n, Namik Aysal, Yildirim Güngör
Petrogenesis Of Late Cretaceous Adakitic Magmatism In The İstanbul Zone (Çavuşbaşı Granodiorite, Nw Turkey), Sabah Yilmaz Şahi̇n, Namik Aysal, Yildirim Güngör
Turkish Journal of Earth Sciences
The Çavuşbaşı granodiorite intrudes Ordovician sedimentary rocks in the western part of the İstanbul Zone (NW Turkey). The intrusion is made up mainly of granodiorite, and subordinate tonalite and quartz diorite, and has a granular texture and some special mixing textures such as antirapakivi, blade-shaped biotite, acicular apatite, spongy cellular dissolution/melting plagioclase textures. The main mafic minerals are hornblende and biotite. U-Pb in-situ dating of zircons from two samples via SHRIMP yielded weighted age values of ~68 Ma, suggesting emplacement during the Late Cretaceous. Geochemically the Çavuşbaşı granodiorite resembles adakites with high Sr/Y and La/Yb ratios, low Y and HREE …
The Palu-Uluova Strike-Slip Basin In The East Anatolian Fault System, Turkey: Its Transition From The Palaeotectonic To Neotectonic Stage, Serap Çolak, Ercan Aksoy, Ali̇ Koçyi̇ği̇t, Murat İnceöz
The Palu-Uluova Strike-Slip Basin In The East Anatolian Fault System, Turkey: Its Transition From The Palaeotectonic To Neotectonic Stage, Serap Çolak, Ercan Aksoy, Ali̇ Koçyi̇ği̇t, Murat İnceöz
Turkish Journal of Earth Sciences
The East Anatolian fault system (EAFS) is the 80-km-wide, 700-km-long, NE-trending sinistral strike-slip fault system forming a seismically very active intracontinental transfom fault boundary. It is located between Karlıova County in the northeast and Karataş-Samandağ counties in the southwest, and forms the southeastern boundary of the Anatolian platelet. The Palu-Uluova basin is one of several strike-slip basins located along the EAFS. It is surrounded by several push-ups such as the Karaömerdağı, Mastardağı and Askerdağı push-ups caused by the complexities peculiar to strike-slip faulting. The Palu-Uluova basin consists of three sub-sections: two are NE-trending strike-slip sub-basins, the Uluova and the Palu-Kumyazı …
Early Oligocene Continental Climate Of The Palaeogene Basin (Hungary And Slovenia) And The Surrounding Area, Boglarka Erdei, Torsten Utescher, Lilla Hably, Julia Tamás, Anita Roth-Nebelsick, Michaela Grein
Early Oligocene Continental Climate Of The Palaeogene Basin (Hungary And Slovenia) And The Surrounding Area, Boglarka Erdei, Torsten Utescher, Lilla Hably, Julia Tamás, Anita Roth-Nebelsick, Michaela Grein
Turkish Journal of Earth Sciences
This paper concentrates on the Early Oligocene palaeoclimate of the southern part of Eastern and Central Europe and gives a detailed climatological analysis, combined with leaf-morphological studies and modelling of the palaeoatmospheric CO_2 level using stomatal and \delta^1^3C data. Climate data are calculated using the Coexistence Approach for Kiscellian floras of the Palaeogene Basin (Hungary and Slovenia) and coeval assemblages from Central and Southeastern Europe. Potential microclimatic or habitat variations are considered using morphometric analysis of fossil leaves from Hungarian, Slovenian and Italian floras. Reconstruction of CO_2 is performed by applying a recently introduced mechanistic model. Results of climate analysis …
Palaeoclimate Estimates For Selected Leaf Floras From The Late Pliocene (Reuverian) Of Central Europe Based On Different Palaeobotanical Techniques, Christine Thiel, Stefan Klotz, Dieter Uhl
Palaeoclimate Estimates For Selected Leaf Floras From The Late Pliocene (Reuverian) Of Central Europe Based On Different Palaeobotanical Techniques, Christine Thiel, Stefan Klotz, Dieter Uhl
Turkish Journal of Earth Sciences
To provide quantitative palaeoclimate estimates based on different palaeobotanical techniques for three contemporaneous Pliocene leaf floras, we applied the Coexistence Approach (CoA), leaf margin analysis (LMA), the Climate Leaf Analysis Multivariate Program (CLAMP) and the European Leaf Physiognomic Approach (ELPA). Furthermore, we compared recently published estimates from an additional locality with our data. The leaf physiognomic techniques yield lower mean annual temperatures than the CoA, which is most likely caused by taphonomic biases. Due to these potential biases we are in favour of the CoA as the most reliable method, and its palaeotemperature estimates show similar temperatures for all localities. …
Carbon Isotope And Stomatal Data Of Late Pliocene Betulaceae Leaves From Sw China: Implications For Palaeoatmospheric Co2-Levels, Bainian Sun, Suting Ding, Jingyu Wu, Chong Dong, Sanping Xie, Zhicheng Lin
Carbon Isotope And Stomatal Data Of Late Pliocene Betulaceae Leaves From Sw China: Implications For Palaeoatmospheric Co2-Levels, Bainian Sun, Suting Ding, Jingyu Wu, Chong Dong, Sanping Xie, Zhicheng Lin
Turkish Journal of Earth Sciences
The cuticular \delta^1^3C values and stomatal parameters (stomatal density and stomatal index: SD and SI) of two Betulaceae species, Betula mioluminifera Hu et Chaney and Carpinus miofangiana Nathorst, from a suite of superposed horizons in West Yunnan, southwestern China, were measured in order to recover Late Pliocene CO2 levels. Correlations are given for \delta^1^3C, SD, epidermal cell density (ECD), and SI. \delta^1^3C reveals a positive trend with the SD and SI in the two species, and such a positive correlation can also be observed between the \delta^1^3C and ECD in C. miofangiana. However, \delta^1^3C has a slightly negative correlation with …
Palaeoclimate Evolution In Siberia And The Russian Far East From The Oligocene To Pliocene – Evidence From Fruit And Seed Floras, Svetlana Popova, Torsten Utescher, Dmitry Gromyko, Angela Bruch, Volker Mosbrugger
Palaeoclimate Evolution In Siberia And The Russian Far East From The Oligocene To Pliocene – Evidence From Fruit And Seed Floras, Svetlana Popova, Torsten Utescher, Dmitry Gromyko, Angela Bruch, Volker Mosbrugger
Turkish Journal of Earth Sciences
The Cenozoic continental deposits of Western Siberia, Eastern Siberia and the Russian Far East are best described on the basis of carpological records. The palaeoclimate evolution has been reconstructed quantitatively (Coexistence Approach) providing inferred data on temperature, precipitation and the mean annual range of these parameters. Climate curves document the transition from very warm and humid conditions in the Late Oligocene via the Middle Miocene Climatic Optimum to a cool temperate climate during the Pliocene. Compared with other time intervals the Miocene climate is the most comprehensively reconstructed. For the Middle Miocene the Siberian and Far Eastern data are combined …
Purification And Characterization Of Endoxylanase Xln-2 From Aspergillus Niger B03, Georgi Dobrev, Boriana Zhekova
Purification And Characterization Of Endoxylanase Xln-2 From Aspergillus Niger B03, Georgi Dobrev, Boriana Zhekova
Turkish Journal of Biology
An extracellular multiple form of endoxylanase was isolated from the xylanolytic complex of Aspergillus niger B03. The enzyme was purified to a homogenous form using ultrafiltration, anion exchange chromatography, and gel filtration. It was a nonglycosylated protein with a molecular weight of 20,000 Da as determined by sodium dodecyl sulfate-polyacrylamide gel electrophoresis, and 21,000 Da as determined by gel filtration. The optimal pH for the enzyme action was 5.0 and the optimal temperature was 55 °C. Endoxylanase stability was significantly improved in the presence of glycerol and sorbitol. The enzyme activity was activated by Mn^{2+} and Co^{2+}, and it was …
Comparison Of Three Yarrowia Lipolytica Strains For Lipase Production: Nbrc 1658, Ifo 1195, And A Local Strain, Özgür Kebabci, Ni̇lüfer Ci̇hangi̇r
Comparison Of Three Yarrowia Lipolytica Strains For Lipase Production: Nbrc 1658, Ifo 1195, And A Local Strain, Özgür Kebabci, Ni̇lüfer Ci̇hangi̇r
Turkish Journal of Biology
Lipase production was examined with 3 strains of Yarrowia lipolytica: NBRC 1658, IFO 1195, and a local strain. All strains were obtained from Hacettepe University's Department of Food Engineering. The addition of nitrogen and carbon sources and the effects of initial pH and temperature parameters were studied. For all 3 strains, the growth temperature range was 20-40 °C, and maximum growth was determined at 30 °C. The initial pH range was 6-9 for growth and 3-6 for lipase production. Maximum growth results were detected as follows: Y. lipolytica NBRC 1658 at 30 °C and pH 8, Y. lipolytica IFO 1195 …
Prevalence Of The Ivs1(+1)G->A And 35delg Mutations In The Gjb2 Gene Of Turkish Patients With Nonsyndromic Hearing Loss, Tüzün Arik Biyikli
Prevalence Of The Ivs1(+1)G->A And 35delg Mutations In The Gjb2 Gene Of Turkish Patients With Nonsyndromic Hearing Loss, Tüzün Arik Biyikli
Turkish Journal of Biology
GJB2 encodes connexin 26, a gap junction protein that is assumed to be a component of the potassium recycling pathway in the inner ear. Loss or malfunction of these gap junctions, as might be reflected by mutations in GJB2, may disrupt potassium movement from the hair cells through the supporting cell network to the endolymph, leading to hearing impairment. One mutation, the deletion of 1 guanosine residue from a stretch of 6 between nucleotide positions 30 and 35 (35delG) at codon 10, is the most common deafness-causing allelic variant of GJB2 in sporadic patients and autosomal recessive families. Mutations in …
Phosphate-Solubilizing Microbes And Their Occurrence In The Rhizospheres Of Piper Betel In Karnataka, India, Padmavathi Tallapragada, Usha Seshachala
Phosphate-Solubilizing Microbes And Their Occurrence In The Rhizospheres Of Piper Betel In Karnataka, India, Padmavathi Tallapragada, Usha Seshachala
Turkish Journal of Biology
Low phosphate solubility is one of the most important factors limiting the plant growth in Indian soils. Many microorganisms can enhance phosphate solubility, but little is known about the magnitude of their phosphorus-solubilizing ability. The native populations of phosphate-solubilizing bacteria and fungi were studied in different rhizospheric soil samples obtained from betel vine plants (Piper betel L.) in order to compare the results. The present study focuses on the phosphate-solubilizing capacity of bacteria and fungi in rhizospheric soil samples obtained from betel vine plants, revealing the dominance of Aspergillus species (26.1 mm) as major phosphate solubilizers, along with Bacillus subtilis …
Anti-Inflammatory Effects Of Different Extracts From Three Salvia Species, Eli̇f Çadirci, Hali̇s Süleyman, Peri̇han Gürbüz, Ayşe Uz, Zühal Güvenalp, Lütfi̇ye Ömür Demi̇rezer
Anti-Inflammatory Effects Of Different Extracts From Three Salvia Species, Eli̇f Çadirci, Hali̇s Süleyman, Peri̇han Gürbüz, Ayşe Uz, Zühal Güvenalp, Lütfi̇ye Ömür Demi̇rezer
Turkish Journal of Biology
Salvia L. species have been used for the treatment of various inflammatory ailments in traditional medicine. In order to evaluate this ethnobotanical information, water, methanol, n-butanol, acetone, and chloroform extracts from 3 Salvia species (S. fruticosa, S. verticillata, and S. trichoclada) were screened for their anti-inflammatory activity using in vivo experimental models in rats. For this purpose a carrageenan-induced inflammatory paw edema model was used. All extracts demonstrated anti-inflammatory activities; however, n-butanol extract of Salvia fruticosa (syn. S. triloba), which is known as Turkish sage, was found to be the most active. It can be expected that the active flavonoids, …
Protective Effects Of \Beta-Carotene And Silymarin On Human Lymphocytes, Erkan Yurtcu, Ezgi̇ Kasapoğlu, Feri̇de İffet Şahi̇n
Protective Effects Of \Beta-Carotene And Silymarin On Human Lymphocytes, Erkan Yurtcu, Ezgi̇ Kasapoğlu, Feri̇de İffet Şahi̇n
Turkish Journal of Biology
Beta-carotene and silymarin have antioxidant properties against oxidative damage and are used as dietary supplements. The aim of this study was to assess the protective effects of \beta-carotene and silymarin on healthy human lymphocytes exposed to L-arginine-induced oxidative damage. Study samples were lymphocyte cultures set up from venous blood obtained from 6 healthy individuals (3 males and 3 females). Oxidative DNA damage was induced by L-arginine. \beta-Carotene and silymarin were added to the cultures as antioxidants to observe their protective effects, if any. Alkaline single-cell gel electrophoresis (SCGE) was used to evaluate DNA damage. While L-arginine generated genotoxic damage in …
Folk Medicines In The Villages Of Ilıca District (Erzurum, Turkey), Ufuk Özgen, Yusuf Kaya, Peter Houghton
Folk Medicines In The Villages Of Ilıca District (Erzurum, Turkey), Ufuk Özgen, Yusuf Kaya, Peter Houghton
Turkish Journal of Biology
The villages of Ilıca District in Erzurum Province, Turkey, were surveyed in terms of plants and animals used traditionally for medicinal purposes. Plants were compiled according to their families, botanical names, local names, usages, and applications. A total of 70 plant species belonging to 29 families are used by village people to treat a wide range of complaints, such as hemorrhoids, urinary system infections, stomach disorders, respiratory diseases, skin diseases, rheumatism, and jaundice. In addition, 3 animal species are used for the treatment of some diseases. The collected data were compared with those formerly recorded.
Cytotoxic And Antibacterial Activities Of Leaf Extracts Of Astragalus Gombiformis Pomel (Fabaceae) Growing Wild In Tunisia, Hassen Teyeb, Nahla Zanina, Mohamed Neffati, Wahiba Douki, Mohamed Fadhel Najjar
Cytotoxic And Antibacterial Activities Of Leaf Extracts Of Astragalus Gombiformis Pomel (Fabaceae) Growing Wild In Tunisia, Hassen Teyeb, Nahla Zanina, Mohamed Neffati, Wahiba Douki, Mohamed Fadhel Najjar
Turkish Journal of Biology
Many species of the genus Astragalus have been long used in folk medicine because of their biological properties. The aim of this study was to investigate the antibacterial and cytotoxic activities of extracts from the leaves of wild Astragalus gombiformis Pomel. Antibacterial activity was assayed against several common human pathogenic bacterial strains using the paper disk-agar diffusion method. Cytotoxicity was measured against human lung carcinoma cells using the colorimetric MTT assay. The strongest cytotoxic activity against the human A549 lung epithelial carcinoma cell line was detected for dichloromethane extracts at IC_{50} = 85 ± 21.7 µg/mL. The best incubation time …
Antimicrobial And Antioxidant Properties Of Artemisia L. Species From Western Anatolia, Şüra Baykan Erel, Gottfried Reznicek, Serdar Gökhan Şenol, Nefi̇se Ülkü Karabay Yavaşoğlu, Si̇bel Konyalioğlu, Ahmet Ulvi̇ Zeybek
Antimicrobial And Antioxidant Properties Of Artemisia L. Species From Western Anatolia, Şüra Baykan Erel, Gottfried Reznicek, Serdar Gökhan Şenol, Nefi̇se Ülkü Karabay Yavaşoğlu, Si̇bel Konyalioğlu, Ahmet Ulvi̇ Zeybek
Turkish Journal of Biology
Artemisia L. taxa (A. absinthium L., A. arborescens L., A. campestris L., A. scoparia Waldst. & Kit., A. santonicum L., and A. vulgaris L.) naturally distributed through western and southwestern Turkey were chosen as experimental materials in this study. Essential oils of the aerial parts of these Artemisia species were isolated by hydrodistillation and analyzed by gas chromatography-mass spectrometry. The major components were identified as sabinene in A. absinthium (17.56%), camphor in A. arborescens (33.39%), 1,2-dehydro acenaphthylene in A. campestris and A. scoparia (20.71% and 11.80%, respectively), and \alpha-thujone in A. vulgaris and A. santonicum (56.13% and 39.46%, respectively). Essential …
Antimicrobial Activity Of Poplar Propolis On Mutans Streptococci And Caries Development In Rats, Soley Arslan, Si̇bel Si̇li̇ci̇, Duygu Perçi̇n, Ayşe Nedret Koç, Özgür Er
Antimicrobial Activity Of Poplar Propolis On Mutans Streptococci And Caries Development In Rats, Soley Arslan, Si̇bel Si̇li̇ci̇, Duygu Perçi̇n, Ayşe Nedret Koç, Özgür Er
Turkish Journal of Biology
The influence of the different extracts of propolis and chlorhexidine on mutans streptococci and the development of dental caries in rats was examined in this study. Specifically, the antimicrobial effects of propolis extracts (including ethanol, methanol, chloroform, hexane, propylene glycol, and ethyl acetate) on Streptococcus mutans UA159 and Streptococcus sobrinus 6715 were studied. Minimal inhibitory concentration and minimal bactericidal concentration were determined using the National Committee for Clinical Laboratory Standards broth macrodilution method. In the animal study, the rats were infected with S. sobrinus and fed a cariogenic diet. They were treated topically twice a day with both ethanol extract …
Determination Of Mutagenic Potencies Of Aqueous Extracts Of Thermopsis Turcica By Ames Test, Recep Li̇man, Yasi̇n Eren, Di̇lek Akyil, Muhsi̇n Konuk
Determination Of Mutagenic Potencies Of Aqueous Extracts Of Thermopsis Turcica By Ames Test, Recep Li̇man, Yasi̇n Eren, Di̇lek Akyil, Muhsi̇n Konuk
Turkish Journal of Biology
Thermopsis turcica is an endemic species of Turkey popularly known as Eber Sarısı or Piyam; it is a member of the Thermopsis genus, which contains plants considered to be medicinal throughout the world. In this study, the mutagenic effect of aqueous extracts obtained from the leaves, root, stem, and flowers of T. turcica were evaluated by the Ames test, using Salmonella typhimurium TA97, TA98, TA100, and TA102 strains with and without an S9 activation system. The results obtained were analyzed statistically using SPSS for Windows, and the Mann-Whitney test was performed for comparisons. The results showed that all of the …
Changes In Seed Reserve Composition During Germination And Initial Seedling Development Of Safflower (Carthamus Tinctorius L.), Muhammet Tonguç, Ruzi̇ye Elkoyunu, Sabri̇ Erbaş, Yaşar Karakurt
Changes In Seed Reserve Composition During Germination And Initial Seedling Development Of Safflower (Carthamus Tinctorius L.), Muhammet Tonguç, Ruzi̇ye Elkoyunu, Sabri̇ Erbaş, Yaşar Karakurt
Turkish Journal of Biology
The present study was carried out to determine the changes in some reserve molecules of safflower seeds during germination and early seedling growth. The seeds of 2 safflower cultivars were used as plant material (Dinçer 5-118 and Montola 2000). Seeds were germinated for 72 h and observations were taken every 12 h throughout the study. Changes in total oil content (%), total protein content (%), total soluble sugar contents (TSS, mg g^{-1}), and reducing sugar contents (RS, mg g^{-1}) were determined for each cultivar during germination and seedling growth. The oil content of the cultivars decreased from 54.7% and 57.4% …
The Growth And Reproduction Of White Bream (Blicca Bjoerkna L. 1758) In An Oligo-Mesotrophic Lake In Northwest Anatolia (Sapanca, Turkey), Hacer Canan Okgerman, Mahmut Elp, Si̇bel Atasağun
The Growth And Reproduction Of White Bream (Blicca Bjoerkna L. 1758) In An Oligo-Mesotrophic Lake In Northwest Anatolia (Sapanca, Turkey), Hacer Canan Okgerman, Mahmut Elp, Si̇bel Atasağun
Turkish Journal of Biology
Growth parameters and the reproduction period of white bream (Blicca bjoerkna L. 1758) sampled from Sapanca Lake were determined monthly between November 2000 and October 2001. Three hundred and fifty white bream specimens caught ranged in age from 1^+ to 9^+ years, and the majority of the samples consisted of individuals of the 5^+-year-old age group. The von Bertalanffy equation was determined as Lt = 22.169 (1 - exp {-0.215[t + 0.986]}), Ø': 2.02 for males and Lt = 31.917 (1 - exp {-0.122[t + 1.087]}), Ø': 2.10 for females. The length-weight relationship was estimated as W = 0.0046 TL …