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Articles 8431 - 8460 of 8705
Full-Text Articles in Entire DC Network
Effects Of Different Irrigation Methods And Regimes On Vegetative Growth, Fruit Yield And Quality Of Apple Trees, A. İlhami̇ Köksal, Osman Yildirim, Hati̇ce Dumanoğlu, Nurdan Tuna Güneş, Abdullah Kadayifçi
Effects Of Different Irrigation Methods And Regimes On Vegetative Growth, Fruit Yield And Quality Of Apple Trees, A. İlhami̇ Köksal, Osman Yildirim, Hati̇ce Dumanoğlu, Nurdan Tuna Güneş, Abdullah Kadayifçi
Turkish Journal of Agriculture and Forestry
This study was carried out to investigate the effects of different irrigation methods and regimes on the vegetative growth, fruit yield and quality of 'Starkspur Golden Delicious' and 'Starkrimson' apple trees on seedling rootstocks in Ankara conditions. Irrigation regimes were started to apply water when 30% (S_10) and 50% (S_20) of available water holding capacity in 120 cm soil depth were consumed and to apply water amount of 75% (S_11-S_21) and 100% (S_12-S_22) of Class A pan evaporation with the irrigation intervals of the S_10 and S_20 regimes. Irrigation water applied in drip and undertree microsprinkler irrigation methods was less …
Changes In The Stability Of Frozen Puff Pastry Doughs During The Shelf Life, Orhan Dağlioğlu, Murat Taşan, Bariş Tunçel
Changes In The Stability Of Frozen Puff Pastry Doughs During The Shelf Life, Orhan Dağlioğlu, Murat Taşan, Bariş Tunçel
Turkish Journal of Agriculture and Forestry
In this research changes in the free fatty acidity (%) and peroxide values, fatty acid composition, specific height and sensory properties of puff pastry doughs were investigated during the shelf-life (12 months) by storing them at -18 °C after being frozen at -40°C. Samples were made of puff pastry margarines belong to three different company. Free fatty acidity (%) and peroxide values were slightly increased with duration of shelf-life while the changes in the free fatty acid composition have remained at limited level. Spesific height that is an important quality criteria of baked puff pastries decreased gradually in all samples. …
Cover And Contents
Turkish Journal of Veterinary & Animal Sciences
No abstract provided.
Karyotype Analysis In Hexaploid Triticale, Meti̇n Tosun
Karyotype Analysis In Hexaploid Triticale, Meti̇n Tosun
Turkish Journal of Agriculture and Forestry
In this study, morphology of chromosomes was determined via karyotype and idiogram analysis in Nutria 7272 line of hexaploid (2n=42) triticale obtained from CIMMYT. On the bases of the presence or absence of satellites and the arm ratio, the chromosome complement was divided into four groups; satellited, median, submedian and subterminal chromosomes. Of the 42 chromosomes present in Nutria 7272 karyotype, 4 were satellited, 14 median, 18 submedian and 6 subterminal. The chromosome length and the arm ratio were 4.844 \mu (M_7) - 8.066 \mu (SM_1) and 1.091 (M_7) - 2.125 (SM_1), respectively. The satellite length of SAT_1 and SAT_2 …
Radioisotopic Evaluation Of Malignant Lung Tumors: A Technetium-99m-Methoxy-Isobutylisonitrile Study, Murathan Şahi̇n, Ayşenaz Özcan, İrem Bernay, Tarik Başoğlu, Ari̇f Engi̇n Demi̇rçali, Oğuz Uzun, Levent Erkan
Radioisotopic Evaluation Of Malignant Lung Tumors: A Technetium-99m-Methoxy-Isobutylisonitrile Study, Murathan Şahi̇n, Ayşenaz Özcan, İrem Bernay, Tarik Başoğlu, Ari̇f Engi̇n Demi̇rçali, Oğuz Uzun, Levent Erkan
Turkish Journal of Medical Sciences
Tumor imaging with myocardial perfusion agents has been a focal point for researchers. A kinetic study with 99m Technetium- methoxyisobutylisonitrile ( 99m Tc-MIBI) was performed to evaluate the tumor uptake of this radiopharmaceutical in lung cancer. Thirty-five patients with lung cancer were studied. In 21 (60%) patients, there were regions of high uptake of 99m Tc-MIBI in the lesions. Heart/tumor (H/T), heart/lung (H/L) and tumor/lung (T/L) ratios were obtained. H/T and H/L ratios were 1.66±0.22 and 2.10±0.28 in 2-3 min, and 1.69±0.25 and 2.14±0.27 in 29-30 min respectively. The T/L ratio was 1.28±0.10 in 2-3 min and 1.29±0.14 in 29-30 …
Some Characteristics Of Polyphenol Oxidase And Peroxidase From Taro (Colocasia Antiquorum), Ahmet Yemeni̇ci̇oğlu, Mehmet Özkan, Beki̇r Cemeroğlu
Some Characteristics Of Polyphenol Oxidase And Peroxidase From Taro (Colocasia Antiquorum), Ahmet Yemeni̇ci̇oğlu, Mehmet Özkan, Beki̇r Cemeroğlu
Turkish Journal of Agriculture and Forestry
The heat inactivation kinetics of taro polyphenol oxidase (PPO) and peroxidase (POD) in the temperature range of 50°-80°C followed the first-order kinetic model. Both enzymes possessed two isoenzymes with varying heat stabilities. In the range of 60°-70°C, heat stable isoenzymes accounted for 33-34% of POD and 67-72% of PPO. E a and z values of heat stable isoenzymes were, respectively, 19.4 kcal.mol -1 and 25.9°C for POD, and 21 kcal.mol -1 and 25.5°C for PPO. The pH optimum was 5.9 for POD and 6.5 for PPO. POD was densely located on the surface of taro tubers whereas PPO was located …
Cover And Contents
Turkish Journal of Veterinary & Animal Sciences
No abstract provided.
Cover And Contents
Turkish Journal of Veterinary & Animal Sciences
No abstract provided.
Studies On Extremal Segments In Random Sequences, Deniz Ertaş, Yacov Kantor
Studies On Extremal Segments In Random Sequences, Deniz Ertaş, Yacov Kantor
Turkish Journal of Physics
We review our main findings on the size distribution of the largest neutral segments in a sequence of N randomly charged monomers. Upon mapping to one--dimensional random walks (RWs), this corresponds to finding the probability distribution for the size L of the largest segment that returns to its starting position in an N--step RW. Using analytical, exact enumeration, and Monte Carlo methods, we reveal the complex structure of the probability distribution in the large N limit. In particular, the size of the longest neutral segment has a distribution with a square-root singularity at \ell\equiv L/N = 1, an essential singularity …
Cover And Contents
Turkish Journal of Veterinary & Animal Sciences
No abstract provided.
On The Global Stabilization Of Nonlinear Systems Via Switching Manifolds, Stephen P. Banks, Meti̇n U. Salamci, M. Kemal Özgören
On The Global Stabilization Of Nonlinear Systems Via Switching Manifolds, Stephen P. Banks, Meti̇n U. Salamci, M. Kemal Özgören
Turkish Journal of Electrical Engineering and Computer Sciences
The global stabilization of nonlinear systems is investigated by using switching surfaces. The nonlinear system is forced to a lower order switching manifold, which is designed to be stable by construction. Thus, the stability of the reduced-order system is guaranteed and parameter selection for the switching surface is avoided. The method is extended to a class of uncertain nonlinear systems and exemplified with some fictitious dynamic models.
A Simple Formula Obtained Using Tabu Search Algorithm For The Radiation Efficiency Of A Resonant Rectangular Microstrip Antenna, Dervi̇ş Karaboğa, Keri̇m Güney
A Simple Formula Obtained Using Tabu Search Algorithm For The Radiation Efficiency Of A Resonant Rectangular Microstrip Antenna, Dervi̇ş Karaboğa, Keri̇m Güney
Turkish Journal of Electrical Engineering and Computer Sciences
A new simple formula for the radiation efficiency of a resonant rectangular microstrip patch antenna is presented. The formula is obtained by using a tabu search algorithm, which is a quite new optimization technique based on the principles of intelligent problem solving. The formula is valid for substrates with relative permittivities between 1 and 12.8 and for the complete range of thicknesses normally used. The results obtained by using this new simple formula are in conformity with those reported elsewhere. The formula can also be used in the calculation of the radiation efficiency of dipoles.
Effects Of Parasitic Elements On Oscillation Frequency Of Ota-C Sinusoidal Oscillators, Ari̇f Nacaroğlu, Ergun Erçelebi̇
Effects Of Parasitic Elements On Oscillation Frequency Of Ota-C Sinusoidal Oscillators, Ari̇f Nacaroğlu, Ergun Erçelebi̇
Turkish Journal of Electrical Engineering and Computer Sciences
An oscillator circuit which incorporates Operational Transconductance Amplifiers is presented. The circuit is designed using three OTAs and two grounded capacitors. The frequency of oscillation is tunable over a wide frequency range. The effects of the parasitic elements on the oscillation frequency and the oscillation condition are studied. The theoretical results are compared with the experimental results for a practical oscillator circuit.
Cover And Contents
Turkish Journal of Electrical Engineering and Computer Sciences
No abstract provided.
A Program To Search For Homotopy 3-Spheres, Michael Greene, Colin Rouke
A Program To Search For Homotopy 3-Spheres, Michael Greene, Colin Rouke
Turkish Journal of Mathematics
No abstract provided.
Comparing Yield And Yield Components Of Some Selected Poppy (Papaver Somniferum L.) Lines, Ahmet Gümüşçü, Neşet Arslan
Comparing Yield And Yield Components Of Some Selected Poppy (Papaver Somniferum L.) Lines, Ahmet Gümüşçü, Neşet Arslan
Turkish Journal of Agriculture and Forestry
The aim of this study is to select desirable poppy lines introduced from different regions in terms of plant and agricultural characteristics. In the study, morphological and phenological observations on plants were done and seed, capsule yields, morphine ratio and morphine yield of each line were determined along two years. Only second year's results were evaluated for planting time as winter and spring. According to the results obtained, in the first year, flowering period varied between 79 and 116 days. While seed yield, capsule yield, morphine ratio and morphine yield varied between 8.22-76.75 kg/da, 6.14-69.72 kg/da, 0.57-1.40 %, 0.046-0.458 kg/da, …
Effects Of Ozonation On Cod Elimination Of Substituted Aromatic Compounds In Aqueus Solution, Şermi̇n Gül, Osman Seri̇ndağ, Hami̇t Boztepe
Effects Of Ozonation On Cod Elimination Of Substituted Aromatic Compounds In Aqueus Solution, Şermi̇n Gül, Osman Seri̇ndağ, Hami̇t Boztepe
Turkish Journal of Chemistry
The chemical oxygen demand (COD) change of various substituted aromatic compounds, namely benzoic acid, p-aminobenzoic acid, p-toluenesulfonic acid, sulfanilic acid, nitro benzene, resorcinol, p-cresol, o- cresol, o-toluidine, aniline and 8-hydroxyquinoline were investigated at ozone doses of 5, 10, 15 and 20 mg O_{3}\cdotmin^{-1}, respectively. Percent COD removal of initial compounds after ozonation was compared with reported biodegradation results. The pH change and percent removal of selected compounds were also evaluated in ozone does of 20 mg O_{3}\cdotmin^{-1} up to 80 min. ozonation. The results showed that high ozone doses are needed to obtain better elimination of initial compounds and also …
Determination Of Patent Blue V And Carmoisine In Gelatine Desserts By Derivative Spectrophotometry, Yüksel Özdemi̇r, Ayşe Arzu Akkan
Determination Of Patent Blue V And Carmoisine In Gelatine Desserts By Derivative Spectrophotometry, Yüksel Özdemi̇r, Ayşe Arzu Akkan
Turkish Journal of Chemistry
A first-derivative spectrophotometric method was developed for quantitative determination of two synthetic organic dyes, Carmoisine and Patent Blue V, which are under governmental regulations all over the world because of their toxicity and carcinogenity. In this study, Carmoisine and Patent Blue V were simultaneously determined in their binary mixtures by first-derivative spectrophotometry. The method was applied to different gelatine desserts. The first-derivative derivative method did not eliminate turbid background in the samples. A simple background correction procedure involving a C_{18}-cartridge sample preparation step was developed for determination of dyes in gelatine dessert by first-derivative spectrophotometry. The C_{18}-cartridge sample preparation step …