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Morphometric and biochemical variation and the distribution of the genus Apodemus (Mammalia : Rodentia) in Turkey

Colak, R. | Colak, E. | Yigit, N. | Kandemir, I. | Soezen, M.


A total of 253 specimens belonging to the genus Apodemus were examined from 45 localities in Turkey based on morphometric and biochemical analyses. Six different Apodemus species were distributed; A. sylvalicus was recorded only from Thrace (European part of Turkey), A. iconicus throughout Turkey, except Thrace and south-eastern Anatolia, A. flavicollis from Turkey (rare in central and eastern Anatolia), A. uralensis from Marmara and Black Sea Region, A. agrarius from the northern parts of Thrace, and A. mystacinus from Asiatic Turkey. Analysis of Variance (ANOVA) of the data showed a high heterogeneity among Apodemus species. Out o . . .f 28 morphometric variables, 27 displayed significant heterogeneity among groups (p < 0.001). The first three discriminant functions explained 96.6% of the total variation. Sylvaemus species (A. flavicollis, A. iconicus, A. uralensis and A. sylvaticus) showed overlapping distribution with each other and two other species A. mystacinus and A. agrarius were formed a separate clusters. Based on ten loci, it was determined that Idh-1, Mdh-s, alpha-Gpdh and Me were distinguishing characters for A. sylvaticus, A. uralensis, A. flavicollis and A. iconicus. Idh-1, Mdh-S, alpha-Gpdh, and Me were polymorphic loci, and deviated from Hardy-Weinberg equilibrium. The greatest genetic differentiation was originated from Me, but the Idh had the smallest genetic differentiation among polymorphic loci. UPGMA dendrograms showed that A. flavicollis was genetically the closest to A. iconicus, but the most distant to A. mystacinus Daha fazlası Daha az

Fauna and flora of drilling and core data from the İznik Lake: The Marmara and the Black Sea connection

Meriç E. | Nazik A. | Yümün Z. | Büyükmeriç Y. | Avşar N. | Yildiz A. | Sagular E.K.

Article | 2018 | Quaternary International486 , pp.156 - 184

The study deals with on the Quaternary connection of the Iznik Lake between the Gemlik Gulf and the Black Sea located in the Marmara Region. The core and drilling data were evaluated. They were collected at two locations and depths from drilling cores and at the three deepest locations of the lake. A total of 510 samples were examined from the lake-bottom cores. Ostracod, mollusc, nannoplankton, ascidian spicule, and diatom assemblages observed at different levels of the drillings were studied. No foraminiferal data were recorded. Molluscan association such as Dreissena bugensis, D. caspia, Monodacna pontica, Clathrocaspia makarovi, . . . Euxinipyrgula milachevitchi, Euxinipyrgula lincta indicate Neoeuxinian age. Amnicythere olivia, A. stepanaitysae, A. striatocostata, Tyrrhenocythere amnicola and Loxoconcha immodulata of the ostracod assemblage, exhibiting Ponto-Caspian origin, were found. In addition, fossil ascidian spicules comprising various species of Bonetia, Micrascidites, Monniotia, and Rigaudia genera were encountered, probably representing Late Pleistocene to Holocene ages. Campylodiscus echeneis, Cocconeis placentula var. lineata Epithemia turgida var. granulata, Epithemia adnata, Nitzschia commutate and N. vermicularis, from the diatom assemblage are genera and species also found in the İznik Lake and in the Black Sea. Mollusc and ostracod fauna, the Ponto-Caspian origin indicates that the İznik Lake was connected with the Black Sea and the Marmara Sea in the recent period. Thus, the Ponto-Caspian assemblages indicate the early Neoeuxinian (Surozhian) brackish water inundated the study area. Geochronological ages determined by the 14C method from the deposits occurring at 53–54 m above present sea level in the İznik Lake indicate the periods of connection via Iznik Lake during 33,630 to 32,920 cal BP (SK-1) and BP 27,335 to 27,070 cal BP (SK-2). When the position of the deposits is compared with the previously available Late Pleistocene 14C data obtained from the molluscs identified in the nearby Gemlik Gulf at -76 m present water depth and also with the early Khazarian (Middle Pleistocene) age data on the molusc fauna at 130–150 m heights of uppermost terraces above present sea level to NW of the lake, we suggest the influence of a neo-tectonic regime for the occurrence of comparable age deposits at different levels in the region. It may be proposed that a vertical displacement in the order of a 100 m occurred since the late Pleistocene in the İznik Lake area and the lake acquired its present features as a result of the tectonic movements. © 2017 Elsevier Ltd and INQU Daha fazlası Daha az

Use of the red winged sticky traps for collecting bark and ambrosia beetles [Scolytinae (Coleoptera: Curculionidae)] on deciduous trees of Kasnak oak nature protection area in Isparta, Turkey

Sarikaya, Oguzhan | Sayin, Huseyin

Article | 2016 | RESEARCH JOURNAL OF BIOTECHNOLOGY11 ( 9 ) , pp.79 - 85

Kasnak Oak (Quercus vulcanica) Nature Protection Area is situated in Yukarigokdere province of Isparta city in the South-western of Turkey. This area contains Quercus vulcanica (Boiss. and Heldr.ex) Kotschy) which is endemic for Turkey. In this study bark and ambrosia beetle species (Col.: Curculionidae, Scolytinae) distributed on deciduous trees of the Kasnak Oak Nature Protection Area were determined. For this aim, the Red wing sticky traps (by mixing of ethyl alcohol 96% and toluene 1%) were set in stand and were checked periodically. Also, specimens were collected from weak trees and also broken and fallen trees by snow. As a re . . .sult, 12 Scolytinae species were determined. These species are; Hylesinus crenatus (Fabricius, 1787); Hylesinus varius Fabricius, 1775; Dryocoetes villosus (Fabricius 1792); Taphrorychus ramicola (Reitter, 1894); Taphrorychus villifrons (Dufour, 1843); Scolytus intricatus (Ratzeburg, 1837); Scolytus koenigi (Schevyrew 1890); Scolytus mali (Bechstein 1805); Scolytus rugulosus (Muller, 1818); Anisandrus dispar (Fabricius, 1792); Trypodendron signatum (Fabricius 1787) and Xyleborinus saxesenii (Ratzeburg, 1837). Among these species, X. saxesenii is the most abundant species Daha fazlası Daha az

Comparative wood anatomy of Pinus sylvestris and its var. compacta in the West Black Sea Region of Turkey

Yaman, Barbaros

Article | 2007 | IAWA JOURNAL28 ( 1 ) , pp.75 - 81

Pinus sylvestris L. subsp. hamata (Steven) Fomin var. compacta Tosun is quite different from the common form of R sylvestris in its external morphology. The size of the needles, cones and seeds of the former are significantly smaller than those of the latter. Besides, this variety branches out beginning from the ground level, and has very dense branches and needles. The present study describes the anatomical properties of the wood of P. sylvestris var. compacta and compares them with typical P. sylvestris. The woods of these taxa have the same qualitative anatomical features, but most of the quantitative anatomical characteristics s . . .how significant differences: variety compacta has lower values than common P. sylvestris in tracheid length and diameter, ray height and bordered pit diameter Daha fazlası Daha az

IRS-2 G1057D polymorphism in Turkish patients with colorectal cancer

Hulya Yukseloglu E. | Karakas Celik S. | Urhan Kucuk M. | Yalin E. | Sebnem Ozkal S. | Ates C. | Berkoz M.

Article | 2014 | Przeglad Gastroenterologiczny9 ( 2 ) , pp.88 - 92

Introduction: Gene polymorphisms have a broad range of analysis, but are of particular use in molecular medicine due to their potential in revealing the genetic tendency in diseases such as cancer, heart attack etc. These studies basically depend on mutations that can be detected by proper techniques. The genes coding the insulin receptor substrate (IRS) proteins are among the most widely analysed polymorphisms in various cancer types, in which a G1057D mutation is seen. Aim: To determine the risk of colon cancer by analysing the IRS-2 gene polymorphism in Turkish patients. Material and methods: A total of 161 newly diagnosed colore . . .ctal cancer patients were analysed and compared to 197 unrelated healthy controls. A polymerase chain reaction-based restriction fragment length polymorphism method was carried out. Results: No differences were observed between the patient and control groups for both allele and genotype frequencies of the IRS-2 G1057D gene. Conclusions: Our results demonstrated that IRS-2 G1057D polymorphism is not associated with colorectal cancer in the Turkish population. This research is a preliminary and original study in Turkish patients with colorectal cancer. It also provides population-level genetic data on IRS-2 in the Turkish population. Further studies should be performed on larger number of patients and controls for more reliable results about the genetic tendency in colorectal cancer in Turkey. The study is a collaborative work of different universities and scientists Daha fazlası Daha az

Dickkopf-1 levels in Turkish patients with bladder cancer and its association with clinicopathological features

Kaba M. | Pirincci N. | Benli E. | Gecit I. | Gunes M. | Yuksel M.B. | Tok A.

Article | 2014 | Asian Pacific Journal of Cancer Prevention15 ( 1 ) , pp.381 - 384

Background: Evidence indicates that Dickkopf-1 (DKK-1) levels may be a biomarker for cancer risk. The aim of this study was to assess DKK-1 and its correlation with clinic-pathological features in patients with bladder cancer. Materials and Methods: DKK-1 levels were determined in serum samples from 90 patients with bladder cancer before transurethral tumor resection. The concentrations of DKK-1 were determined by using enzyme linked immune-sorbent assay (ELISA). Results: Elevated preoperative DKK-1 levels were associated with tumor stage (p

The role of coal in energy policy and sustainable development of Turkey: Is it compatible to the EU energy policy?

Baris K.

Article | 2011 | Energy Policy39 ( 3 ) , pp.1754 - 1763

This paper aims to assess the current and future role of coal in energy strategy of Turkey, and evaluates the compatibility of policies to the EU energy policy and strategy. Coal is regarded as the most important indigenous energy source in Turkey together with hydropower to strengthen the supply security of the country. Turkish government set targets to fully utilize coal reserves of the country in next decades. However, the country is also in the process of becoming an EU Member State, hence, it is expected that the energy policies have to comply with the EU. Moreover, Turkey ratified Kyoto Protocol in 2009, thus the country shoul . . .d limit CO2 emission together with other greenhouse gases. The probable obstacles that Turkey may face due to the utilization of coal were determined as CO2 emissions, lack of technology and application in Carbon Capture and Storage (CCS) and health and safety issues. It is concluded that coal is a very important domestic energy source for Turkey but new policies have to be developed and adopted immediately, and more realistic targets for the country should be set accordingly. © 2011 Elsevier Ltd Daha fazlası Daha az

Nicotine dependence in outpatients with major depressive, anxiety and somatoform disorders: A cross-sectional study from Turkey

Egri M. | Ozcan M.E. | Cumurcu B.E. | Kurcer M.A.

Article | 2008 | Neurology Psychiatry and Brain Research15 ( 1 ) , pp.33 - 38

Aim: There is a positive association between smoking and sychiatric disorders. As the relationship between smoking and major depressive disorder (MDD), and anxiety disorders (AD), and somatoform disorders (SD) among psychiatric outpatients in Turkey is not well established, the authors aimed to study this relationship in a cross-sectional study. Methods: Data was obtained from 507 outpatients who met DSM-IV criteria for either MDD (n=110), or one of AD (287), or SD (110) at a university psychiatry clinic, in Turkey. Fagerstrom Test for Nicotine Dependence (FTND) was administered to all patients enrolled in the study to determine deg . . .ree of nicotine dependence. Results: The majority of the sample (72.2%) was female. The mean age was 35.8±12.4 years and ranged from 17 to 72 years. Overall, 183 subjects (36.1%) were current smokers with significant differences in prevalence rates by gender, (43.9%) among males and (33. %) among females (?2: 4.463, Daha fazlası Daha az

Antipsychotic prescriptions in a university hospital outpatient population in Turkey: A retrospective database analysis, 2005-2006

Atik L. | Erdogan A. | Karaahmet E. | Saracli O. | Atasoy N. | Kurcer M.A. | Balcioglu I.

Article | 2008 | Progress in Neuro-Psychopharmacology and Biological Psychiatry32 ( 4 ) , pp.968 - 974

Objective: The aim of this study is to document the sociodemographic and the clinical profile of patients who are on antipsychotic (AP) medication prescribed in outpatient mental health clinic of a university hospital. Methods: A retrospective chart review was conducted for all outpatient files between 2005 and 2006 at the Zonguldak Karaelmas University, Medical Faculty Hospital, Department of Psychiatry in Turkey. All patients prescribed AP with regular follow up were recruited for the study. The type of AP and the route of administration were recorded. The diagnosis, age and gender of the patients were also evaluated. Results: We . . .reviewed 1606 patients' files. APs were prescribed in 27.6% of the patients. Atypical antipsychotics (AAPs) represented 75.1% and typical antipsychotics (TAPs) represented 24.9% of all antipsychotic prescriptions in our study. The main psychiatric diagnoses associated with a TAP prescription were: psychotic disorders (6.5%), major affective disorders (49.5%), anxiety disorders (36.4%), and other psychiatric diseases (7.4%). The main psychiatric diagnoses associated with an AAP prescription were: psychotic disorders (35.1%), major affective disorders (31.1%), anxiety disorders (27.8%), somatoform disorders (2.4%) and other psychiatric diseases (6.4%). Twenty-eight of these patients (6.3%) were prescribed more than one AP, 45 patients were prescribed mood stabilizer (10.2%) and 272 patients were prescribed antidepressant agents (61.2%) in addition to AP. Conclusions: The results reflect the particular use of AAPs in present study population. In line with the published data, the results of this study show that AAPs and TAPs are widely used in those with major affective disorders and psychotic disorders. These findings also underline the widespread off-label use of APs in the treatment of other psychiatric disorders. © 2008 Elsevier Inc. All rights reserved Daha fazlası Daha az

Land cover mapping using sentinel-1 SAR data

Abdikan S. | Sanli F.B. | Ustuner M. | Calò F.

Conference Object | 2016 | International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPRS Archives41 , pp.757 - 761

In this paper, the potential of using free-of-charge Sentinel-1 Synthetic Aperture Radar (SAR) imagery for land cover mapping in urban areas is investigated. To this aim, we use dual-pol (VV+VH) Interferometric Wide swath mode (IW) data collected on September 16th 2015 along descending orbit over Istanbul megacity, Turkey. Data have been calibrated, terrain corrected, and filtered by a 5×5 kernel using gamma map approach. During terrain correction by using a 25m resolution SRTM DEM, SAR data has been resampled resulting into a pixel spacing of 20m. Support Vector Machines (SVM) method has been implemented as a supervised pixel based . . . image classification to classify the dataset. During the classification, different scenarios have been applied to find out the performance of Sentinel-1 data. The training and test data have been collected from high resolution image of Google Earth. Different combinations of VV and VH polarizations have been analysed and the resulting classified images have been assessed using overall classification accuracy and Kappa coefficient. Results demonstrate that, combining opportunely dual polarization data, the overall accuracy increases up to 93.28% against 73.85% and 70.74% of using individual polarization VV and VH, respectively. Our preliminary analysis points out that dual polarimetric Sentinel-1SAR data can be effectively exploited for producing accurate land cover maps, with relevant advantages for urban planning and management of large cities Daha fazlası Daha az

The 3-D strain patterns in Turkey using geodetic velocity fields from the RTK-CORS (TR) network

Kutoglu H.S. | Toker M. | Mekik C.

Article | 2016 | Journal of African Earth Sciences115 , pp.246 - 270

This study presents our use of GPS data to obtain and quantify the full continuous strain tensor using a 3-D velocity field in Turkey. In this study, GPS velocities improve the estimation of short-term strain tensor fields for determining the seismic hazard of Turkey. The tensorial analysis presents different aspects of deformation, such as the normal and shear strains, including their directions, the compressional and extensional strains. This analysis is appropriate for the characterizing the state of the current seismic deformation. GPS velocity data from continuous measurements (2009-2012) to estimate deformations were processed . . . using the GAMIT/GLOBK software. Using high-rate GPS data from permanent 146 GNSS stations (RTK-CORS-TR network), the strain distribution was determined and interpolated using a biharmonic spline technique. We show the strain field patterns within axial and plane form at several critical locations, and discuss these results within the context of the seismic and tectonic deformation of Turkey. We conclude that the knowledge of the crustal strain patterns provides important information on the location of the main faults and strain accumulation for the hazard assessment. The results show an agreement between the seismic and tectonic strains confirming that there are active crustal deformations in Turkey. © 2015 Elsevier Ltd Daha fazlası Daha az

Chromosome Differentiation of Four 2n=50 Chromosomal Forms of Turkish Mole Rat, Nannospalax nehringi

Matur, Ferhat | Colak, Faruk | Sevindik, Murat | Sozen, Mustafa

Article | 2011 | ZOOLOGICAL SCIENCE28 ( 1 ) , pp.61 - 67

Nannospalax is a genus of blind rodents adapted to living in underground. The species have numerous chromosomal forms in Turkey, and their taxonomic position is still unknown. In this study, 15 mole rats of four different 2n = 50 forms were used; C- and G- banding processes were applied; and a comparison was made accordingly. Karyological results showed that the 2n = 50S form is a new form for Turkish blind mole rats. 2n = 50S form is determined from Andirin (Kahramanmaras) and has NF = 70. The 2n = 50W form, on the other hand, differs from the others with NF = 74 form. C-banding results showed that heterochromatin blocks of all 2n . . .= 50 are different, while only the 2n = 50W form has telomeric heterochromatin blocks. G-banding results, however, displayed homologies and differences among the chromosomal forms. After comparison, we determined that Robertsonian fusion is an efficient force on chromosomal evolution in blind mole rats in Turkey, and that telomeric heterochromatin is a distinctive character for the 2n = 50W form. We suggest that the chromosomal changing mechanism should be independent from climatic peculiarities. These results support the theory that ancestral karyotype should have the largest distribution in a chromosomally variable species Daha fazlası Daha az

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