Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

TÜBİTAK

Discipline
Keyword
Publication Year
Publication

Articles 4651 - 4680 of 8894

Full-Text Articles in Entire DC Network

Evaluation Of Antiinflammatory And Antinociceptive Effects Of Some Juniperus Species Growing In Turkey, Ni̇lüfer Orhan, Esra Akkol, Fatma Ergun Jan 2012

Evaluation Of Antiinflammatory And Antinociceptive Effects Of Some Juniperus Species Growing In Turkey, Ni̇lüfer Orhan, Esra Akkol, Fatma Ergun

Turkish Journal of Biology

Different parts and products of Juniperus species have been used as folk medicine for various infectious diseases, rheumatism, and wounds in Turkey. In order to evaluate this traditional usage, antiinflammatory and antinociceptive activities of leaf and berry extracts of 3 Juniperus species (J. excelsa, J. foetidissima, and J. sabina) were investigated. Additionally, antiinflammatory and antinociceptive activities of subextracts of J. oxycedrus subsp. oxycedrus (Joso) berries and leaves were evaluated. The p-benzoquinone-induced writhing test for antinociceptive activity and the carrageenan-induced hind paw edema model for antiinflammatory activity in mice were employed. Ethanol extract prepared from berries of J. foetidissima provided a …


Effect Of Row Spacing On Seed And Forage Yield In Sainfoin (Onobrychis Viciifolia Scop.) Cultivars, Vladeta Stevovic, Rade Stanisavljevic, Dragan Djukic, Dragan Djurovic Jan 2012

Effect Of Row Spacing On Seed And Forage Yield In Sainfoin (Onobrychis Viciifolia Scop.) Cultivars, Vladeta Stevovic, Rade Stanisavljevic, Dragan Djukic, Dragan Djurovic

Turkish Journal of Agriculture and Forestry

A field experiment including 3 sainfoin cultivars (Makedonka, EG Norm, and the Sokobanja population) was set up in a seed production trial with the aim of determining adequate row spacing for seed and forage yield. The cultivars were sown at 3 different row spacings (20 cm, 50 cm, and 80 cm) and at a within-row spacing of 1 cm. Seed yield was determined over a 3-year period, whereas forage yield and quality were evaluated from the 2nd cut in the 2nd and 3rd years. Crop thinning through the years, distinct competitive ability of sainfoin, and a large impact of weather …


Cover And Contents Jan 2012

Cover And Contents

Turkish Journal of Biology

No abstract provided.


Cover And Contents Jan 2012

Cover And Contents

Turkish Journal of Biology

No abstract provided.


Moringa Oleifera Leaf Extract: An Innovative Priming Tool For Rangeland Grasses, Wasif Nouman, Muhammad Tahir Siddiqui, Shahzad Maqsood Ahmed Basra Jan 2012

Moringa Oleifera Leaf Extract: An Innovative Priming Tool For Rangeland Grasses, Wasif Nouman, Muhammad Tahir Siddiqui, Shahzad Maqsood Ahmed Basra

Turkish Journal of Agriculture and Forestry

Moringa oleifera leaf extract (MLE) is rich in amino acids, ascorbate, zeatin, minerals, and many other compounds known for their growth-promoting potential. This study was planned to explore the potential of MLE as a seed priming agent to increase the germination rate and plant vigor of 3 range grasses, i.e. Cenchrus ciliaris, Panicum antidotale, and Echinochloa crusgalli. The priming strategies used were hydropriming, CaCl_2, PEG-8000 (-1.1 M Pa), MLE (concentrate; 1:10, 1:20, 1:30, and 1:40 dilutions with distilled water), and matripriming using saturated jute mat for 24 h. The primed seeds were placed between 2 moist Whatman No. 1 filter …


Cover And Contents Jan 2012

Cover And Contents

Turkish Journal of Agriculture and Forestry

No abstract provided.


An Evaluation Of Seed Spacing Accuracy Of A Vacuum Type Precision Metering Unit Based On Theoretical Considerations And Experiments, İsmet Önal, Adnan Deği̇rmenci̇oğlu, Arzu Yazgi Jan 2012

An Evaluation Of Seed Spacing Accuracy Of A Vacuum Type Precision Metering Unit Based On Theoretical Considerations And Experiments, İsmet Önal, Adnan Deği̇rmenci̇oğlu, Arzu Yazgi

Turkish Journal of Agriculture and Forestry

Currently the most widely used machine for precision seeding of cotton and maize seed is vacuum type. The capture of seeds by vacuum plate and the release of seeds from the vacuum plate should be performed precisely without missing or doubling. The physical phenomena should be clarified theoretically to understand how the precision seeding mechanism works. To solve these problems, an attempt was made to develop a nomogram using equations describing the technical characteristics of the seeder used in this study and to describe the seed capture mechanism relying on basic principles of fluid mechanics and aerodynamic properties of seeds. …


The Effect Of Cadmium On Growth And Antioxidant Responses In The Safflower (Carthamus Tinctorius L.) Callus, Shahram Namjooyan, Ramezanali Khavarinejad, Franceous Bernard, Shahrokh Namdjoyan, Hamed Piri Jan 2012

The Effect Of Cadmium On Growth And Antioxidant Responses In The Safflower (Carthamus Tinctorius L.) Callus, Shahram Namjooyan, Ramezanali Khavarinejad, Franceous Bernard, Shahrokh Namdjoyan, Hamed Piri

Turkish Journal of Agriculture and Forestry

Safflower (Carthamus tinctorius L.) callus cultures grown in the presence of different concentrations (0-100 µM) of cadmium were assayed for growth, Cd accumulations, and antioxidative responses. Cadmium inhibited the growth of calli by 25% and 46% at 75 and 100 µM Cd concentrations, respectively. Cadmium concentration in the calli increased with an increased Cd supply in the growth medium. Calli accumulated 334 mg Cd kg^{-1} of their dry weight at 100 µM Cd. Cadmium induced oxidative stress, which was indicated by modulating antioxidant (glutathione and \alpha-tocopherol) levels and antioxidative enzymes. The effect of Cd on glutathione (GSH) was dose-dependent. The …


Cover And Contents Jan 2012

Cover And Contents

Turkish Journal of Agriculture and Forestry

No abstract provided.


Mating System In Natural Populations Of Taurus Cedar (Cedrus Libani A.Rich.), Behi̇ye Banu Bi̇lgen, Yusuf Kurt, Nuray Kaya Jan 2012

Mating System In Natural Populations Of Taurus Cedar (Cedrus Libani A.Rich.), Behi̇ye Banu Bi̇lgen, Yusuf Kurt, Nuray Kaya

Turkish Journal of Agriculture and Forestry

The aim of this study was to estimate patterns of the mating system in 2 natural Cedrus libani A.Rich. populations in Elmalı, Antalya, with the aid of isozyme markers. Isozyme analysis was performed on both maternal and embryo tissues of the seeds collected from Avlankuzu and Çamkuyusu populations. Eleven loci encoding 8 enzyme systems were analyzed. The Avlankuzu and Çamkuyusu populations were a homogeneous and similar gene pool for the loci studied. Based on a multilocus estimator, the proportion of viable seeds originating from outcrossing (tm) was 0.940 for the Avlankuzu population and 0.944 for the Çamkuyusu population. In other …


Cover And Contents Jan 2012

Cover And Contents

Turkish Journal of Agriculture and Forestry

No abstract provided.


Effects Of Low-Molecular-Weight Organic Acids On Phosphorus Sorption Characteristics In Some Calcareous Soils, Neda Moradi, Mirhasan Rasouli Sadaghiani, Ebrahim Sepehr, Babak Abdollahi Mandoulakani Jan 2012

Effects Of Low-Molecular-Weight Organic Acids On Phosphorus Sorption Characteristics In Some Calcareous Soils, Neda Moradi, Mirhasan Rasouli Sadaghiani, Ebrahim Sepehr, Babak Abdollahi Mandoulakani

Turkish Journal of Agriculture and Forestry

Understanding the role of organic acids in phosphorus sorption in soils is very important for economic and environmentally friendly management of soil P. Thus, calcareous surface soils (0-30 cm) from West Azerbaijan Province, Iran, were sampled to study the effect of different organic acids on P sorption. Soil samples (2.5 g) were equilibrated with 25 mL of 0.01 M CaCl_2 solution containing 0-20 mg P L^{-1} and 5 mmol L^{-1} of different organic acids (citric, oxalic, and malic acid). The sorption data were well fitted to Freundlich and linear equations but not to the Langmuir equation. The standard P requirements …


Effects Of Compatibilizer And Nanolayered Silicate On Physical And Mechanical Properties Of Pp/Bagasse Composites, Behzad Kord Jan 2012

Effects Of Compatibilizer And Nanolayered Silicate On Physical And Mechanical Properties Of Pp/Bagasse Composites, Behzad Kord

Turkish Journal of Agriculture and Forestry

Bagasse, an agricultural waste, was investigated for wood plastic nanocomposite production. The incorporation of nanolayered silicate has been considered in recent years for improving the properties of thermoplastic composite. In this study a composite of polypropylene (PP) and bagasse fiber (BF), with different concentrations of nanoclay and maleic anhydride (MA) as compatibilizer, were fabricated by injection molding. Then physical and mechanical properties of the composites were tested according to ASTM standards. The results indicated that tensile modulus and flexural strength increased with an increase in clay loading; however, impact strength and water absorption decreased with an increase in nanolayered silicates. …


Cover And Contents Jan 2012

Cover And Contents

Turkish Journal of Agriculture and Forestry

No abstract provided.


Morphological And Physiological Differences Between Bareroot And Container Juniperus Excelsa Seedlings, Ayşe Deli̇göz Jan 2012

Morphological And Physiological Differences Between Bareroot And Container Juniperus Excelsa Seedlings, Ayşe Deli̇göz

Turkish Journal of Agriculture and Forestry

The effects of stock type on morphological and physiological characteristics were compared in 1 + 0 Crimean juniper (Juniperus excelsa Bieb.) seedlings. In October 2010, the morphological characteristics of both stock types were determined. The physiological condition of both stock types was evaluated by measuring water relation, root growth potential (RGP), and root electrolyte leakage (REL) parameters in seedlings at periodic intervals from October 2010 to April 2011. Container seedlings had greater root collar diameter, higher height, and greater shoot dry weight than bareroot seedlings, but these differences were not significant. However, the shoot-to-root ratios of the container seedlings were …


Cover And Contents Jan 2012

Cover And Contents

Turkish Journal of Agriculture and Forestry

No abstract provided.


Determination Of Intraspecific Nuclear Dna Content Variation In Common Vetch (Vicia Sativa L.) Lines And Cultivars Based On Two Distinct Internal Reference Standards, İskender Ti̇ryaki̇, Meti̇n Tuna Jan 2012

Determination Of Intraspecific Nuclear Dna Content Variation In Common Vetch (Vicia Sativa L.) Lines And Cultivars Based On Two Distinct Internal Reference Standards, İskender Ti̇ryaki̇, Meti̇n Tuna

Turkish Journal of Agriculture and Forestry

The 2C nuclear DNA contents of 40 common vetch (Vicia sativa L.) lines and cultivars were determined by using both safflower (Carthamus tinctorius L.) and barley (Hordeum vulgare L.) as internal reference standards in flow cytometry analysis and correlated with plant morphological characters and 1000-seed weight. The t-test results showed a significant difference between the mean DNA values of the barley and safflower standards (t = -16.74, P = 0.0001). Data analysis also indicated significant (P < 0.01) intraspecific nuclear DNA content variation within the common vetch lines and cultivars for both internal standards used. The DNA content values ranged from 3.342 pg to 3.652 pg and from 3.600 pg to 4.002 pg for the internal standards of safflower and barley, respectively. The DNA differences within the internal standards were 0.310 pg and 0.402 pg for safflower and barley, respectively. The internal standard of barley constantly produced higher DNA content values than the values of safflower standard for all vetch lines and cultivars. Nuclear DNA content differences between 2 internal standards for the same plant material reached as high as 15.59% (0.540 pg), which is equivalent to 528.12 Mbp DNA. No significant correlations between 1000-seed weight and the nuclear DNA contents of barley (P < 0.51) or safflower (P < 0.76) were detected.


Comparison Of Hybrid Maize Obtained From Inbred Lines That Are Selected Via Top-Crossing And Discriminant Analysis, Ahmet Öz Jan 2012

Comparison Of Hybrid Maize Obtained From Inbred Lines That Are Selected Via Top-Crossing And Discriminant Analysis, Ahmet Öz

Turkish Journal of Agriculture and Forestry

This research was done at the Black Sea Agricultural Research Institute in Samsun, in 2006 and 2007. The study was conducted to determine the effectiveness of discriminant analysis in determining the parents among inbred lines in hybrid corn breeding. Grain yield and some yield components of the hybrid maize, which was obtained from inbred lines that were selected in accordance with top-crossing and discriminant analysis, was examined in the research. According to the average of 2 years, the average grain yield of 11 maize hybrids obtained via top-crossing was 9160 kg ha^{-1}, whereas the average grain yield of 8 maize …


Evaluation Of Fatty Acid Compositions And Some Seed Characters Of Common Wild Plant Species Of Turkey, Muhammet Tonguç, Sabri̇ Erbaş Jan 2012

Evaluation Of Fatty Acid Compositions And Some Seed Characters Of Common Wild Plant Species Of Turkey, Muhammet Tonguç, Sabri̇ Erbaş

Turkish Journal of Agriculture and Forestry

Seeds of 14 commonly found plant species from 3 different families (Brassicaceae, Dipsacaceae, and Asteraceae) were investigated for 1000-seed weights (g), total oil (%), total protein (%), total soluble sugar contents (TSS; mg g^{-1}), and fatty acid compositions (%). Correlation coefficients of fatty acids from different families were investigated, as well. Palmitic, stearic, oleic, linoleic, linolenic, eicosenoic, and erucic acids were present in varying amounts. Within the family Brassicaceae, only Cardaria draba did not contain eicosenoic and erucic acids, while species of the Asteraceae and Dipsacaceae did not contain linolenic, eicosenoic, or erucic acids. The 1000-seed weights ranged between 0.17 …


Cover And Contents Jan 2012

Cover And Contents

Turkish Journal of Mathematics

No abstract provided.


Cover And Contents Jan 2012

Cover And Contents

Turkish Journal of Mathematics

No abstract provided.


Chromosome Counts And Karyomorphology Of Some Species Of Artemisia (Asteraceae) From Turkey, Selma Tabur, Şemsetti̇n Ci̇velek, Si̇ğnem Öney, Şadi̇ye Betül Yilmaz Ergün, Murat Kurşat, İsmai̇l Türkoğlu Jan 2012

Chromosome Counts And Karyomorphology Of Some Species Of Artemisia (Asteraceae) From Turkey, Selma Tabur, Şemsetti̇n Ci̇velek, Si̇ğnem Öney, Şadi̇ye Betül Yilmaz Ergün, Murat Kurşat, İsmai̇l Türkoğlu

Turkish Journal of Botany

Chromosome numbers and karyotypes of some species belonging to the genus Artemisia L. (Asteraceae) were investigated, and chromosome counts of 12 species, 1 of which was counted for the first time, are presented with a thorough compilation of previously published data. All of the species studied belong to the subgenus Artemisia Chromosome numbers of 6 taxa confirmed the previous data. Additionally, karyotypes of 8 species were reported. Karyotype analyses of 6 Artemisia species are reported here for the first time. The basic chromosome numbers in the species studied were x = 8 and x = 9, with ploidy levels ranging …


A New Species Of Vinca (Apocynaceae) From Eastern Anatolia, Turkey, Mehmet Koyuncu Jan 2012

A New Species Of Vinca (Apocynaceae) From Eastern Anatolia, Turkey, Mehmet Koyuncu

Turkish Journal of Botany

Vinca soneri Koyuncu sp. nova (Apocynaceae) is described and illustrated as a new species from eastern Anatolia in Turkey. Diagnostic morphological characters of this new species from the related species V. herbacea Waldst. & Kit. are discussed.


Two New Species Of Cephalaria (Caprifoliaceae) From Turkey, Ramazan Süleyman Göktürk, Hüseyi̇n Sümbül, Ayten Çelebi̇, Leyla Açik Jan 2012

Two New Species Of Cephalaria (Caprifoliaceae) From Turkey, Ramazan Süleyman Göktürk, Hüseyi̇n Sümbül, Ayten Çelebi̇, Leyla Açik

Turkish Journal of Botany

Two new Cephalaria Schrad. ex Roem. et Schult. species (Caprifoliaceae) from Turkey, Cephalaria davisiana Göktürk & Sümbül and Cephalaria sumbuliana Göktürk, are described and illustrated. A map showing their distribution and other related taxa is given. The morphological differences of the 2 new species are discussed and comparisons are made with the similar Cephalaria speciosa Boiss. & Kotschy and Cephalaria elmaliensis Hub.-Mor. & V.A.Matthews. In addition to morphological observations, C. davisiana, C. sumbuliana, C. elmaliensis, and C. speciosa were analysed by applying RAPD-PCR techniques. RAPD methods clearly distinguished between the new species and the 2 species that they resemble.


Allium Shirnakiense, Sect. Melanocrommyum (Liliaceae), A New Species From South-Eastern Turkey, Lütfi̇ Behçet, Mustafa Rüstemoğlu Jan 2012

Allium Shirnakiense, Sect. Melanocrommyum (Liliaceae), A New Species From South-Eastern Turkey, Lütfi̇ Behçet, Mustafa Rüstemoğlu

Turkish Journal of Botany

Allium shirnakiense L.Behçet & Rüstemoğlu sp. nova (sect. Melanocrommyum Webb & Berth.) is described as a species new to science on the basis of material collected from Şırnak Province. Morphologically, it is related to A. rhetoreanum Nab., which is an species endemic to South-eastern Turkey. A diagnosis, a taxonomic description, and some illustrations are given.


The Autecological Characteristics Of Desmostachya Bipinnata In Hyper-Arid Regions, Akbar Fakhireh, Majid Ajorlo, Alireza Shahryari, Shahram Mansouri, Soheila Nouri, Ahmad Pahlavanravi Jan 2012

The Autecological Characteristics Of Desmostachya Bipinnata In Hyper-Arid Regions, Akbar Fakhireh, Majid Ajorlo, Alireza Shahryari, Shahram Mansouri, Soheila Nouri, Ahmad Pahlavanravi

Turkish Journal of Botany

This study aimed to investigate the main autecological characteristics of Desmostachya bipinnata L. (Poaceae) in a hyper-arid region. The study was carried out on Sistan plain, south-eastern Iran. The habitats of D. bipinnata were identified and then the climatic and edaphic characteristics of habitats were determined. Phenological stages, reproduction, root system, and nutritive and preference values of D. bipinnata were also studied. One single habitat of D. bipinnata was identified on Sistan plain. Average annual rainfall and temperature of the habitat were 60 mm and 21.8 °C, respectively. Loamy and loamy sand soils of the habitat had EC and pH …


The Seasonal Succession Of Diatoms In Phytoplankton Of A Soda Lake (Lake Hazar, Turkey), Mehmet Ali̇ Turan Koçer, Bülent Şen Jan 2012

The Seasonal Succession Of Diatoms In Phytoplankton Of A Soda Lake (Lake Hazar, Turkey), Mehmet Ali̇ Turan Koçer, Bülent Şen

Turkish Journal of Botany

Some physicochemical variables and climatic effects on the succession of a diatom community in the plankton of the pelagic zone of Lake Hazar, an alkaline soda lake, were investigated. Monthly diatom samples were collected from the surface water at western, central, and eastern pelagic areas of the ellipsoid-shaped lake using a plankton net from November 2004 to October 2005. When high temperature and pH levels prevailed in May and September, Epithemia, Rhopalodia, Cocconeis, and Cyclotella were dominant. Cymbella was dominant in early spring and late autumn, but was not significantly correlated with temperature or pH. The species of Gomphonema, Fragilaria, …


Synthesis Of Antipyrine/Pyridazinone Hybrids And Investigation Of Their In Vivo Analgesic And Anti-Inflammatory Activities, Sultan Baytaş, Nazan İnceler, Khatereh Fattahpour Mavaneh, Meci̇t Orhan Uludağ, Nuretti̇n Abacioğlu, Mehtap Gökçe Jan 2012

Synthesis Of Antipyrine/Pyridazinone Hybrids And Investigation Of Their In Vivo Analgesic And Anti-Inflammatory Activities, Sultan Baytaş, Nazan İnceler, Khatereh Fattahpour Mavaneh, Meci̇t Orhan Uludağ, Nuretti̇n Abacioğlu, Mehtap Gökçe

Turkish Journal of Chemistry

Eleven antipyrine/pyridazinone hybrids were synthesized and evaluated for their in vivo analgesic and anti-inflammatory activities by p-benzoquinone-induced writhing test and carrageenan-induced paw edema model, respectively. The test results indicated that compounds 6a, 6c, and 6d were equally or more potent analgesic and anti-inflammatory agents than aspirin and indomethacin, respectively. Side effects of the compounds were examined on gastric mucosa. Most of the compounds were found to be non-ulcerogenic under test conditions.


Joint Source-Channel Coding For Error Resilient Transmission Of Static 3d Models, Mehmet Oğuz Bi̇ci̇, Andrey Norkin, Gözde Akar Jan 2012

Joint Source-Channel Coding For Error Resilient Transmission Of Static 3d Models, Mehmet Oğuz Bi̇ci̇, Andrey Norkin, Gözde Akar

Turkish Journal of Electrical Engineering and Computer Sciences

In this paper, performance analysis of joint source-channel coding techniques for error-resilient transmission of three dimensional (3D) models are presented. In particular, packet based transmission scenarios are analyzed. The packet loss resilient methods are classified into two groups according to progressive compression schemes employed: Compressed Progressive Meshes (CPM) based methods and wavelet based methods. In the first group, layers of CPM algorithm are protected unequally by Forward Error Correction (FEC) using Reed Solomon (RS) codes. In the second group, embedded bitstream obtained from wavelet based coding is protected unequally with FEC as well. Both groups of methods are scalable with …


Dynamic Stability Enhancement Of A Multimachine Electric Power System Using Statcom, Hasan Fayazi Boroujeni, Reza Hemmati, Sayed Mojtaba Shirvani Boroujeni Jan 2012

Dynamic Stability Enhancement Of A Multimachine Electric Power System Using Statcom, Hasan Fayazi Boroujeni, Reza Hemmati, Sayed Mojtaba Shirvani Boroujeni

Turkish Journal of Electrical Engineering and Computer Sciences

With the expansion of electric power systems, the size and complexity of the network is increased. One of the most important drawbacks of network expansion is the reduction in the damping torque of the whole system. The lack of damping torque can lead to fluctuations and instability in the power system. With regard to this problem, power system stabilizers (PSSs) have been widely utilized to improve power system stability. However, due to some drawbacks of the conventional PSSs, the need for finding a better substitution still remains. Therefore, in this paper, the application of a static synchronous compensator (STATCOM) to …