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Papers by SAADETTiN YiLDiRiM
International Journal of Natural and Engineering Sciences, 2015
Moisture and temperature of the rooting medium where plant cuttings are located are two important... more Moisture and temperature of the rooting medium where plant cuttings are located are two important environmental factors on fruit trees plant production by cuttings. In this study, measurements of moisture of the rooting medium which consisted of perlite was measured with different commonly used sensors; namely, RSU adapter tensiometer, Watermark 200SS, and Waterscout SM100 sensors. Measurements were made at three moistures levels; low (40%), moderate (60%) and high moisture (80%) levels and three temperature levels; low (18 °C), moderate (22 °C) and high temperature (26 °C) levels. Moisture readings of these sensors were compared in terms of precision and accuracy to determine the better sensor for use with computer controlled rooting system. Standard gravimetric method was used to determine moisture level of perlite media for comparison of sensor readings. As a result of the comparison, better readings were obtained from RSU tensiometer in terms of accuracy and precision. The results of the study suggested that the RSU adapter tensiometer can be used for continuous measurement along computer controlled rooting system to keep the moisture of perlite media at desired level needed for better rooting from cuttings for fruit trees reproduction in terms of yield and quality.
El-Cezeri Fen ve Mühendislik Dergisi
2020 yılında Dünya genelinde 27,5 milyon ton, Türkiye de 279,5 bin ton kuru fasulye üretilmiştir.... more 2020 yılında Dünya genelinde 27,5 milyon ton, Türkiye de 279,5 bin ton kuru fasulye üretilmiştir. Kuru fasulye geniş bir çeşitliliğe sahiptir. Bir çeşidi soğuk iklim koşullarında verimli olabilirken, bir çeşidi daha ılıman iklim koşullarında verimli olabilmektedir. Günümüzde kuru fasulye tohumları arasında farklı çeşitlere ait kuru fasulye tohumları karışabilmektedir. Bu durum kuru fasulye verimini olumsuz etkilemektedir. Bitkisel üretimde tohum kalitesi önemlidir. Bu nedenle tohum sınıflandırılması sürdürülebilir tarım ve verimlilik için önemlidir. Kuru fasulye sınıflandırılası günümüzde elekler yardımı ile yapılmaktadır. Elek ile sınıflandırma yönteminin dezavantajları fasulyenin çeşidini, kırık ve bozuk fasulyeleri tespit edememektedir. Hassas tohum seçimi yapılabilmesi için yeni teknolojilere ihtiyaç duyulmaktadır. Bu çalışmanın amacı kuru fasulyenin sınıflandırılması için yapay zekâ tabanlı bir model geliştirmektir. Çalışmada yedi çeşit 13.611 adet kuru fasulye örneği kullanılm...
Physical properties of agricultural materials are important for designing and manufacturing their... more Physical properties of agricultural materials are important for designing and manufacturing their harvest machines on farms and processing equipment in industry. Aerodynamic properties are related to their reaction to moving air as in piles or as a single seed/piece. The pressure drops occurring through apricot pit piles for the superficial air velocities ranging from 0.05 to 2.93 m 3 ·m -2 ·s -1 were experimentally determined and mathematically modeled by using Modified Shedd’s equation and Hukill-Ives equation. These experiments were replicated three times. The results of curve fitting suggested that both equations could be used adequately to predict the pressure drop of apricot pit piles with a high goodness of fitting (R 2 >0.92). The terminal velocities of apricot pits, their kernels and hulls were experimentally determined by dropping one sample into upward air flow current inside the transparent cylindrical pipe. These experiments were replicated ten times. The terminal ve...
In this study, the effect of different temperature and humidity content of rooting medium on root... more In this study, the effect of different temperature and humidity content of rooting medium on rooting percentage of black mulberry hard wood cutting was investigated. For this purpose, different temperature and humidity contents were applied. In the result of the study, the effect of interaction of temperature x humidity and temperature on rooting ratio was not significant. On the other hand, humidity content caused significant changes on rooting percentage. The highest rooting ratio (63,11%) was observed in cutting planted in medium with 40% humidity. The lowest rooting percentages were obtained from two other media contained higher humidity compared to medium with 40% humidity. Both temperature and humidity treatment caused significant changes in root length. Among humidity treatment, 80% humidity produced the longest roots. The longest roots were obtained from 22°C of basal heating treatment. In term of the number of root per cutting, significant difference was not found among hum...
The secondary metabolites of medicinal and aromatic plants show beneficial biological activities ... more The secondary metabolites of medicinal and aromatic plants show beneficial biological activities (antioxidant, antimicrobial, antidepressant, etc.). Drying is the most common process to decrease the high moisture content of the fresh plant materials to the safe storage final moisture content. Relatively low temperature drying of medicinal and aromatic plants limits the dryer capacity. There is a scientific/technological motivation to develop prototype dryers to accelerate the drying process and to maintain product quality of medicinal and aromatic plants. This article presents the preliminary results of a compressive research project being currently conducted at Gaziosmanpaşa University, Turkey. This project aims to develop/measure the effectiveness of two different prototype dryers including the rotary drum dryer to dry medicinal and aromatic plants in terms of reducing specific drying energy consumption, keeping product quality and accelerating drying process. Chopped spearmint pl...
Bu calismada yigin haldeki badem cekirdeklerinin hava akimina karsi gostermis oldugu direncin bel... more Bu calismada yigin haldeki badem cekirdeklerinin hava akimina karsi gostermis oldugu direncin belirlenmesi amaclanmistir. Gucunu 4 kW lik bir elektrik motorundan alan bir santrifuj fan, hava dagilim odasi ve silindirik depodan olusan bir deney duzeneginden faydalanilmistir. Denemelerde 0,05 ile 2,93 m3m-2s-1 hava hizi araliklarinda ortaya cikan basinc dususu deneysel olarak uc tekerrurlu olculmustur. Deneysel ortamda hava hizlarina bagli olculen basinc dususlerinin Shedd ve Hukill-Ives esitlikleri ile matematiksel olarak modellenmesi amaciyla matlab istatistik toolbox araciligi ile none-linear regression analizi yapilmistir. Deneysel olarak olculen basinc kaybinin Shedd ve Hukill-Ives esitlikleri ile tanimlanmasinda iyilik derecesi olarak tahminleme katsayisi (The coefficient of determination-R2) ve Ortalama Kareler Hatasi Koku (Root Mean Square Error-RMSE) degerleri kullanilmistir. Sonuc olarak her iki model de badem cekirdeginin hava akimi direncini denemelerde secilen 0,05 ile 2,93 m3m-2s-1 hava hizi araliklarinda yuksek iyilik dereceleriyle (R2 > 0.95 ve RMSE < 458 Pam-1) tahmin edebilmektedir.
Transactions of the ASABE, 2006
An automated electro-pneumatic soil sampling method based on pressurized air for real-time soil a... more An automated electro-pneumatic soil sampling method based on pressurized air for real-time soil analysis was developed and tested under laboratory conditions. Pressurized air was applied for 36 ms across a 2.5 cm diameter cylinder to cut a sample from a soil column and convey the sample along a delivery pipe into a container. An electro-pneumatic regulator valve was used to regulate the air pressure at 550, 690, and 830 kPa (80, 100, and 120 psi) using an analog electrical signal. A two-position solenoid valve controlled by a stand-alone microprocessor was used to control pulse duration. Laboratory tests were conducted to determine the effectiveness of positive high-pressure air as a cutting force for different soil conditions. The effects of air pressure level, soil moisture content, soil compaction, and soil type on the quantity of soil sample obtained were investigated. Moisture content and air pressure level were the most significant factors, while compaction was not significant (a = 0.05) in terms of mass of soil obtained. Laboratory test results proved that pressurized air was effective in cutting and transporting a soil sample in a short time period (36 ms) for all different soils studied in this experiment. The electro-pneumatic method was also capable of obtaining a consistent amount of soil sample with a coefficient of variation of less than 20% for any individual treatments in the experimental design. The electro-pneumatic soil sampling method is a viable candidate as a soil sampling system for on-the-go soil analysis.
Journal of Agricultural Faculty of Gaziosmanpasa University, 2016
... I thank Dr. Pasian for providing the roses used for my experiment, for teaching me about grow... more ... I thank Dr. Pasian for providing the roses used for my experiment, for teaching me about growing roses, and for serving on my ... I also wish to thank graduate students Tamer Ucar, Kamil Ekinci, Jyh-Rong Tsay, and In-Bok Lee for their support and friendship in ... Abdel-Rahman et al ...
International Journal of Natural and Engineering Sciences, 2015
Moisture and temperature of the rooting medium where plant cuttings are located are two important... more Moisture and temperature of the rooting medium where plant cuttings are located are two important environmental factors on fruit trees plant production by cuttings. In this study, measurements of moisture of the rooting medium which consisted of perlite was measured with different commonly used sensors; namely, RSU adapter tensiometer, Watermark 200SS, and Waterscout SM100 sensors. Measurements were made at three moistures levels; low (40%), moderate (60%) and high moisture (80%) levels and three temperature levels; low (18 °C), moderate (22 °C) and high temperature (26 °C) levels. Moisture readings of these sensors were compared in terms of precision and accuracy to determine the better sensor for use with computer controlled rooting system. Standard gravimetric method was used to determine moisture level of perlite media for comparison of sensor readings. As a result of the comparison, better readings were obtained from RSU tensiometer in terms of accuracy and precision. The results of the study suggested that the RSU adapter tensiometer can be used for continuous measurement along computer controlled rooting system to keep the moisture of perlite media at desired level needed for better rooting from cuttings for fruit trees reproduction in terms of yield and quality.
El-Cezeri Fen ve Mühendislik Dergisi
2020 yılında Dünya genelinde 27,5 milyon ton, Türkiye de 279,5 bin ton kuru fasulye üretilmiştir.... more 2020 yılında Dünya genelinde 27,5 milyon ton, Türkiye de 279,5 bin ton kuru fasulye üretilmiştir. Kuru fasulye geniş bir çeşitliliğe sahiptir. Bir çeşidi soğuk iklim koşullarında verimli olabilirken, bir çeşidi daha ılıman iklim koşullarında verimli olabilmektedir. Günümüzde kuru fasulye tohumları arasında farklı çeşitlere ait kuru fasulye tohumları karışabilmektedir. Bu durum kuru fasulye verimini olumsuz etkilemektedir. Bitkisel üretimde tohum kalitesi önemlidir. Bu nedenle tohum sınıflandırılması sürdürülebilir tarım ve verimlilik için önemlidir. Kuru fasulye sınıflandırılası günümüzde elekler yardımı ile yapılmaktadır. Elek ile sınıflandırma yönteminin dezavantajları fasulyenin çeşidini, kırık ve bozuk fasulyeleri tespit edememektedir. Hassas tohum seçimi yapılabilmesi için yeni teknolojilere ihtiyaç duyulmaktadır. Bu çalışmanın amacı kuru fasulyenin sınıflandırılması için yapay zekâ tabanlı bir model geliştirmektir. Çalışmada yedi çeşit 13.611 adet kuru fasulye örneği kullanılm...
Physical properties of agricultural materials are important for designing and manufacturing their... more Physical properties of agricultural materials are important for designing and manufacturing their harvest machines on farms and processing equipment in industry. Aerodynamic properties are related to their reaction to moving air as in piles or as a single seed/piece. The pressure drops occurring through apricot pit piles for the superficial air velocities ranging from 0.05 to 2.93 m 3 ·m -2 ·s -1 were experimentally determined and mathematically modeled by using Modified Shedd’s equation and Hukill-Ives equation. These experiments were replicated three times. The results of curve fitting suggested that both equations could be used adequately to predict the pressure drop of apricot pit piles with a high goodness of fitting (R 2 >0.92). The terminal velocities of apricot pits, their kernels and hulls were experimentally determined by dropping one sample into upward air flow current inside the transparent cylindrical pipe. These experiments were replicated ten times. The terminal ve...
In this study, the effect of different temperature and humidity content of rooting medium on root... more In this study, the effect of different temperature and humidity content of rooting medium on rooting percentage of black mulberry hard wood cutting was investigated. For this purpose, different temperature and humidity contents were applied. In the result of the study, the effect of interaction of temperature x humidity and temperature on rooting ratio was not significant. On the other hand, humidity content caused significant changes on rooting percentage. The highest rooting ratio (63,11%) was observed in cutting planted in medium with 40% humidity. The lowest rooting percentages were obtained from two other media contained higher humidity compared to medium with 40% humidity. Both temperature and humidity treatment caused significant changes in root length. Among humidity treatment, 80% humidity produced the longest roots. The longest roots were obtained from 22°C of basal heating treatment. In term of the number of root per cutting, significant difference was not found among hum...
The secondary metabolites of medicinal and aromatic plants show beneficial biological activities ... more The secondary metabolites of medicinal and aromatic plants show beneficial biological activities (antioxidant, antimicrobial, antidepressant, etc.). Drying is the most common process to decrease the high moisture content of the fresh plant materials to the safe storage final moisture content. Relatively low temperature drying of medicinal and aromatic plants limits the dryer capacity. There is a scientific/technological motivation to develop prototype dryers to accelerate the drying process and to maintain product quality of medicinal and aromatic plants. This article presents the preliminary results of a compressive research project being currently conducted at Gaziosmanpaşa University, Turkey. This project aims to develop/measure the effectiveness of two different prototype dryers including the rotary drum dryer to dry medicinal and aromatic plants in terms of reducing specific drying energy consumption, keeping product quality and accelerating drying process. Chopped spearmint pl...
Bu calismada yigin haldeki badem cekirdeklerinin hava akimina karsi gostermis oldugu direncin bel... more Bu calismada yigin haldeki badem cekirdeklerinin hava akimina karsi gostermis oldugu direncin belirlenmesi amaclanmistir. Gucunu 4 kW lik bir elektrik motorundan alan bir santrifuj fan, hava dagilim odasi ve silindirik depodan olusan bir deney duzeneginden faydalanilmistir. Denemelerde 0,05 ile 2,93 m3m-2s-1 hava hizi araliklarinda ortaya cikan basinc dususu deneysel olarak uc tekerrurlu olculmustur. Deneysel ortamda hava hizlarina bagli olculen basinc dususlerinin Shedd ve Hukill-Ives esitlikleri ile matematiksel olarak modellenmesi amaciyla matlab istatistik toolbox araciligi ile none-linear regression analizi yapilmistir. Deneysel olarak olculen basinc kaybinin Shedd ve Hukill-Ives esitlikleri ile tanimlanmasinda iyilik derecesi olarak tahminleme katsayisi (The coefficient of determination-R2) ve Ortalama Kareler Hatasi Koku (Root Mean Square Error-RMSE) degerleri kullanilmistir. Sonuc olarak her iki model de badem cekirdeginin hava akimi direncini denemelerde secilen 0,05 ile 2,93 m3m-2s-1 hava hizi araliklarinda yuksek iyilik dereceleriyle (R2 > 0.95 ve RMSE < 458 Pam-1) tahmin edebilmektedir.
Transactions of the ASABE, 2006
An automated electro-pneumatic soil sampling method based on pressurized air for real-time soil a... more An automated electro-pneumatic soil sampling method based on pressurized air for real-time soil analysis was developed and tested under laboratory conditions. Pressurized air was applied for 36 ms across a 2.5 cm diameter cylinder to cut a sample from a soil column and convey the sample along a delivery pipe into a container. An electro-pneumatic regulator valve was used to regulate the air pressure at 550, 690, and 830 kPa (80, 100, and 120 psi) using an analog electrical signal. A two-position solenoid valve controlled by a stand-alone microprocessor was used to control pulse duration. Laboratory tests were conducted to determine the effectiveness of positive high-pressure air as a cutting force for different soil conditions. The effects of air pressure level, soil moisture content, soil compaction, and soil type on the quantity of soil sample obtained were investigated. Moisture content and air pressure level were the most significant factors, while compaction was not significant (a = 0.05) in terms of mass of soil obtained. Laboratory test results proved that pressurized air was effective in cutting and transporting a soil sample in a short time period (36 ms) for all different soils studied in this experiment. The electro-pneumatic method was also capable of obtaining a consistent amount of soil sample with a coefficient of variation of less than 20% for any individual treatments in the experimental design. The electro-pneumatic soil sampling method is a viable candidate as a soil sampling system for on-the-go soil analysis.
Journal of Agricultural Faculty of Gaziosmanpasa University, 2016
... I thank Dr. Pasian for providing the roses used for my experiment, for teaching me about grow... more ... I thank Dr. Pasian for providing the roses used for my experiment, for teaching me about growing roses, and for serving on my ... I also wish to thank graduate students Tamer Ucar, Kamil Ekinci, Jyh-Rong Tsay, and In-Bok Lee for their support and friendship in ... Abdel-Rahman et al ...