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Wyświetlanie 1-8 z 8
Tytuł:
The effects of AVG and GA3 treatments on pistillate (female) flower abortion in „Sebin” walnut cultivar
Efekty zabiegów AVG i GA3 na proces opadania kwiatów żeńskich u orzecha odmiany 'Sebin'
Autorzy:
Akca, Y.
Ozgen, M.
Erturk, U.
Ercisli, S.
Powiązania:
https://bibliotekanauki.pl/articles/11542393.pdf
Data publikacji:
2012
Wydawca:
Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Opis:
Pistillate flower abortion (PFA) in walnuts is defined as the drop of female flowers with or without pedicles within 10–15 days after flowering. This situation is commonly observed in some walnut cultivars causes dramatic yield losses. ‘Şebin’ is a popular walnut cultivar among farmers in Turkey due to the quality of its fruit, yield and ease of marketability. However, in some orchards, established with this cultivar, has a fruitlessness problem. In the present study, the effects of Aminoethoxyvinylglycine (AVG, the commercial brand name is ReTain) (0, 62.5 and 125 ppm doses) and AVG plus GA3 (45, 135 and 270 ppm doses) treatments to prevent abortion in cv. ‘Şebin’ were investigated. The experiments were conducted in two different ecologies. The treatments were carried out just before the receptivity period of female flowers of cv. ‘Şebin’. The results showed that, the female flower abortion ratio of ‘Şebin’ walnut cultivar were 87.78% in Tokat ecology and 77.78% in Niksar ecology. The fruit set ratio by 125 ppm AVG treatment was determined to be 60.89% for Niksar and 57.56% for Tokat ecological conditions. The highest fruit set was obtained from 125 ppm AVG combined 270 ppm GA3 treatment and this ratio was determined to be 93.89% for Niksar ecological conditions whereas it was determined to be 83.33% for Tokat ecological conditions. As a result, it was found that AVG alone or in combination with GA3 is effective treatments in reducing female flower abortion for ‘Şebin’ walnut cultivar.
Opadanie kwiatów żeńskich u orzechów określa się jako spadanie żeńskich kwiatów z szypułkami lub bez, w ciągu 10–15 dni po kwitnieniu. Zjawisko to, powszechnie obserwowane u pewnych odmian orzecha, powoduje znaczne straty w plonie. ‘Şebin’ jest popularną odmianą orzecha wśród farmerów w Turcji ze względu na jej owoce, plon oraz łatwość sprzedaży. Jednak niektóre sady założone z tą odmianą mają problem braku owoców. Niniejsze badanie określa wpływ zabiegów aminoetoksywinyloglicyną (AVG, nazwa handlowa ReTain) (w dawkach 0, 62,5 i 125 ppm) oraz AVG plus GA3 (dawki 45, 135 oraz 270 ppm) stosowanych, aby zapobiec opadaniu. Doświadczenia przeprowadzono w dwóch różnych lokalizacjach. Zabiegi przeprowadzono tuż przed okresem receptywności żeńskich kwiatów odmiany ‘Şebin’. Wyniki pokazały, że wskaźnik opadania kwiatów odmiany ‘Şebin’ wynosił 87,78% w uprawie w Tokat oraz 77,78% w uprawie w Niksar. Współczynnik zawiązanych kwiatów pod wpływem zabiegu 125 ppm AVG określono jako 60,89% dla Niksar oraz 57,56% dla ekologicznych warunków Tokat. Najwięcej zawiązanych kwiatów osiągnięto przy zabiegu 125 ppm AVG w połączeniu z 270 ppm GA3: 93,89% dla warunków ekologicznych Niksar oraz 83,33% dla warunków ekologicznych Tokat. W rezultacie stwierdzono, że sam AVG lub w kombinacji z GA3 jest efektywnych zabiegiem ograniczającym spadanie kwiatów dla odmiany orzecha ‘Şebin’.
Źródło:
Acta Scientiarum Polonorum. Hortorum Cultus; 2012, 11, 4; 179-185
1644-0692
Pojawia się w:
Acta Scientiarum Polonorum. Hortorum Cultus
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Physical properties of hazelnuts
Autorzy:
Ercisli, S.
Ozturk, I.
Kara, M.
Kalkan, F.
Seker, H.
Duyar, O.
Erturk, Y.
Powiązania:
https://bibliotekanauki.pl/articles/25559.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
physical property
hazelnut
mechanical property
nut
kernel
genotype
plant cultivar
Corylus avellana
orchard
Turkey
Źródło:
International Agrophysics; 2011, 25, 2
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Manufacturing of Al-Zr Thermal-resistant Alloys for Transmission Lines
Autorzy:
Erturk, A.
Guven, E.
Karabay, S.
Powiązania:
https://bibliotekanauki.pl/articles/1401363.pdf
Data publikacji:
2015-04
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
81.05.Bx
88.80.H
83.50.Uv
81.70.Jb
81.40.Ef
81.70.Bt
Opis:
The present transmission lines of populous cities will have to be changed with an ability to work at higher temperatures without any weight and cross section changes. Innovative thermal-resistant alloy conductors (T-ACSR) operate in the range of about 150-200°C instead of 75°C which is the standard ACSR type conductor service temperature. In this study, the manufacturing procedure of Al-Zr alloy wire, used as high-temperature conductor wires, have been introduced. The Al-Zr alloy has been cast in a permanent mold than being extruded to a diameter of 10 mm at 400°C. After that the extruded rods have been cold drawn to a diameter of 3.02 mm. Elongation and tensile strength values of the cold drawn wire have been achieved by tensile test at elevated temperatures. Also, microstructural analysis and dispersion hardening procedure have been investigated. The results show that tensile strength and thermal-resistant property are improved by the addition of Zr.
Źródło:
Acta Physica Polonica A; 2015, 127, 4; 1292-1294
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Vibration Noise Harshness of a Light Truck Driveshaft, Analysis and Improvement with Six Sigma Approach
Autorzy:
Ertürk, A.
Karabay, S.
Baynal, K.
Korkut, T.
Powiązania:
https://bibliotekanauki.pl/articles/1033531.pdf
Data publikacji:
2017-03
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
06.30.Gv
34.50.Ez
43.58.+z
46.40.-f
05.10.-a
Opis:
This paper deals with the application of six sigma methodology for optimization of a cardan shaft. The aim of this optimization is to reduce vibration of the drive shaft and consequently improve vibration noise harshness of the vehicle. The six sigma methodology has been applied to a light truck, which has received excessive vibration and noise complaints. The define-measure-analyze-improve-control approach has been followed to enhance the vibration noise harshness statistics. The result shows that all expected vibration noise harshness performance targets have been dramatically improved when compared to the initial values. As a conclusion, the case study on a light truck is a useful reference to improve vehicle performance for vibration noise harshness.
Źródło:
Acta Physica Polonica A; 2017, 131, 3; 477-480
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Simulation and Fabrication Works on Optimization of High Pressure Aluminum Die Casting Part
Autorzy:
Ertürk, S.
Kumruoğlu, L.
Özel, A.
Powiązania:
https://bibliotekanauki.pl/articles/1181961.pdf
Data publikacji:
2014-02
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
81.20.Hy
81.05.Bx
Opis:
High-pressure die casting offers reduced costs due to its small tolerances and smooth surface finish. Casting parts produced are consumed by the automotive industry in millions. In this study, the use of computer aided engineering applications on design of high-pressure die-casting was studied. The influence of casting process steps in die design was studied and analyzed. The casting simulation software was used to improve design and solve problems. By using the simulation software in analyses of die design, the final design was reached in a few hours and thus the design process of pre-production was shortened and mold production was carried out with no revision on die material. Radiographic test was applied on the casting parts and the result shows good correlation between simulations of solidification result data. Also the results proved that the application of squeeze pressure in the intensification phase of high-pressure die casting process could be examined in the casting simulation.
Źródło:
Acta Physica Polonica A; 2014, 125, 2; 449-451
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Design of grippers for laparoscopic surgery and optimization of experimental parameters for maximum tissue weight holding capacity
Autorzy:
Erturk, S.
Samtas, G.
Powiązania:
https://bibliotekanauki.pl/articles/202210.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Laparoscopic gripper
noncontact gripper
tissue type
Taguchi method
optimization
Opis:
Grippers are routinely used to hold, lift and move organs in laparoscopic operations. They are generally toothed to prevent organs from slipping during retention. Organs held by grippers are always at risk of being damaged by the clamping force. In this study, noncontact grippers working with the Bernoulli principle and using air pressure were developed, and vacuum performance was compared in terms of maximum tissue weight holding capacity. For this purpose, Taguchi method was employed for experimental design and optimization, and Taguchi L16 orthogonal array was selected for experimental design. The experimental parameters were 4 gripper types, 4 air-pressure levels (3.5, 4.5, 5, and 5.5 bar), 4 flow rates (2.2, 2.6, 2.8 and 3 m3/h) and two animal tissue types (ventriculus/gizzard and skin). Values from the experimental procedures were evaluated using signal-to-noise ratio, analysis of variance and three-dimension graphs. An equation was obtained by using 3rd-order polynomial regression model for weight values. Optimization reliability was tested by validation tests and the revealed test results were within the estimated confidence interval. The results obtained from this study are important for future studies in terms of organ injury prevention due to traditional grippers in laparoscopic surgery.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2019, 67, 6; 1125-1132
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Determination of Feederless Casting Limits by Thermal Analysis in Cast Iron
Autorzy:
Erturk, S.
Kumruoglu, L.
Ozel, A.
Powiązania:
https://bibliotekanauki.pl/articles/1030308.pdf
Data publikacji:
2017-03
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
81.05.Bx
81.30.-t
81.30.Fb
81.70.Pg
Opis:
In this study the determinations of melt quality was carried out by thermal analysis of ductile iron. The aim of the study was to determine the limits of feederless casting after the determination of inoculation quality in cast iron. Production method of pouring into a sand mold in the entirety and without using feeder systems has been investigated. Forms of the solidification and volume change have been investigated with simulation program as functions of inoculation quality, type of resin in the mold and mold rigidity. Results of the analysis have been compared with the results of experimental iron casting.
Źródło:
Acta Physica Polonica A; 2017, 131, 3; 370-373
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fabricating of Steel/Cast Iron Composite by Casting Route
Autorzy:
Ertürk, S.
Çakır, O.
Kumruoglu, L.
Ozel, A.
Powiązania:
https://bibliotekanauki.pl/articles/1182854.pdf
Data publikacji:
2014-02
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
47.11.-j
81.20.Hy
81.30.Fb
81.05.Ni
68.08.-p
Opis:
In this study, 1.2333 cold work tool steel and cast iron (GG 25) were simultaneously melted in different furnaces to fabricate composite die mold used in sheet metal forming industry. To enhance the metallurgical bond between two components of composite part, the pouring temperature of cast iron was assessed just above the solidus temperature, then metallurgically prepared cast iron was poured on to the cast tool steel. The temperature and casting parameters were monitored and simulated. Experimental and simulation results were compared, finally the optimum parameters and casting route were revealed.
Źródło:
Acta Physica Polonica A; 2014, 125, 2; 452-453
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-8 z 8

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