Yazar "Marakoglu, Tamer" seçeneğine göre listele
Listeleniyor 1 - 7 / 7
Sayfa Başına Sonuç
Sıralama seçenekleri
Öğe Chemical and technological properties of European cranberrybush (Viburnum opulus L.) fruits(ASIAN JOURNAL OF CHEMISTRY, 2008) Akbulut, Mehmet; Calisir, Sedat; Marakoglu, Tamer; Coklar, HacerThe European cranberrybush (Viburnum opulus L) fruits were analyzed for selected technological properties (dimensions, geometric mean diameter, sphericity, bulk density, fruit density, volume, terminal velocity, rupture strength, porosity) and proximate composition (moisture, reducing sugar, ascorbic acid, total anthocyanin and phenolics, crude, protein, crude oil, crude energy, crude fiber, ash, pH, acidity, alcohol soluble extract and colour) properties. Mineral content of Viburnum opulus growing in Turkey were determined by inductively coupled plasma atomic emission spectrometer (ICP-AES). All materials contained high amounts of Ca, K, Mg, Na. P and S. The average pulp mass ratio, thickness. width, length, mass, volume, geometric mean diameter, sphericity and projected area were measured as 653.0 g/kg. 9.59 mm, 9.71 mm, 10.18 mm, 0.65 g, 638 mm(3). 9.82 mm, 0.96 and 0.9988 cm(2), respectively. The energy, reducing sugar. protein, cellulose. oil, ash, acidity, ascorbic acid, total phenolics, total anthocyanin and soluble solid matter values of European cranberrybush fruits were established as 256.56 kJ/g, 63.46 g/kg, 64.85 mg/kg, 180.71 g/kg, 6.70 g/kg, 12.83 g/kg, 17.92 g/kg, 595.24 mg/kg 3253.87 mg/kg, 654.23 mg/kg and 104.31 g/kg, respectively. It is very important to evaluate the technological properties of equipment used harvesting, transportation, storage and processing of fresh fruits. Also, the information supplied on the chemical properties of the European cranberrybush fruit serves as food in human nutrition.Öğe A COMPARATIVE STUDY ON ENERGY EFFICIENCY OF WHEAT PRODUCTION UNDER DIFFERENT TILLAGE PRACTICES IN MIDDLE ANATOLIA OF TURKEY(PARLAR SCIENTIFIC PUBLICATIONS (P S P), 2017) Marakoglu, Tamer; Carman, KazimConservation tillage practices results in lower energy consumption as well as soil erosion protection, structural damage control, and a reduction in time and energy required for seedbed preparation. Different soil tillage practices were examined in 2013-2014 production year on clay soil entisol. The treatments were carried out in natural field conditions with four soil tillage treatments. The tillage treatments were: moldboardplow + discharrow + roller + seeding (T1), vertical shaft rotory tiller + roller + seeding (T2), winged chisel + roller + seeding (T3) and no-till (direct seeding) (T4). Wheat yield parameters and energy indices (net energy gain, energy productivity) were recorded. There were significant differences (P < 0.01) among the treatments in terms of energy indices and for wheat yield and biomass values. It was found that T4 had the highest grain and biomass yield and T2 had the lowest. T3 had the lowest energy productivity and energy use efficiency and T4 had the highest. The least energy consumed for wheat produced was 3.63 Mj kg(-1) for T4 and the most was 4.71 Mj kg(-1) for T2. The highest energy use efficiency were in the T4 (11.56), and followed by T2 (9.80). It was concluded that T4 was the most efficient overall in the Middle Anatolia.Öğe THE EFFECTS DIFFERENT TILLAGE TREATMENTS ON SOIL SURFACE CONDITIONS AND DUST CONCENTRATION IN SEMI-ARID CENTRAL ANATOLIA(PARLAR SCIENTIFIC PUBLICATIONS (P S P), 2017) Seflek, Ali Yavuz; Marakoglu, Tamer; Carman, KazimThe traditional method of agriculture is generally harmful to the environment as it involves procedures such as burning wastes and deep soil tillage for weed control. Tillage results in the release of particulate matter (PM) from soil. Improper soil tillage methods and techniques can increase soil erosion, and ultimately cause degradation of soil. In this study, we measured dust concentration (PM10) generated by alternative soil tillage implementations and examined its relationships with mean weighted diameter, stability index, and surface roughness. Considering alternative soil tillage treatments, mean weighted diameter, shearing stress, stability index, and surface roughness values were found to be in the range of 5.25-11.57 mm, 0.34-0.618 N cm(-2), 2.24-3.80, and 8.2%-29.0%, respectively. Dust concentration generated by different soil tillage treatments were determined to be between 49.19 and 143.45 mg m(-3). The effects of tillage treatments on dust concentration were found to be significant (P < 0.01). A 22.6% increase in soil moisture resulted in 40.8% decrease in dust concentration. The correlation coefficients indicating the relationships of dust concentration with mean weighted diameter, shearing stress, and stability index were calculated as 0.94, 0.81, and 0.94, respectively.Öğe Energy balance of direct seeding applications used in wheat production in middle Anatolia(ACADEMIC JOURNALS, 2010) Marakoglu, Tamer; Carman, KazimIn the present study, which was conducted at Polatli agricultural farms, three different applications were used for wheat production. These were conventional tillage, reduced tillage and direct seeding applications. It was found that seed energy had the highest percentage of use among the portions of total input energy. Seed energy was followed by fertilizer, diesel-oil, chemicals and machinery, respectively. When the energy input/output ratio was taken into consideration, the highest rate was obtained as 2.81 through direct seeding application and this was followed by conventional tillage application with a decrease of 8.49% and reduced tillage application, with a decrease of 18.06% respectively. Consequently, it was put forth that direct seeding applications can also be used in wheat production.Öğe LONG - TERM EFFECT OF REDUCED TILLAGE ON CO2 EMISSION(PARLAR SCIENTIFIC PUBLICATIONS (P S P), 2015) Marakoglu, Tamer; Carman, KazimReduced tillage is widely used among conservation tillage treatments thanks to its reduced field traffic and lower fuel consumption. The fact that this method causes less CO2 emission when compared to conventional tillage makes reduced tillage prominent in terms of environment and sustainability of soil resources. This study analyzed the effects of conventional and reduced tillage on CO2 emission throughout wheat production period. In conventional tillage (moldboard plough-cultivator + rotary harrow combination), two horizontal axis rotary tiller and one vertical axis rotary tiller were used. After tillage applications, mean weight diameter of soil, penetration resistance, stubble burying ratio, CO2 emission after tillage varied between 9.54 - 6.53 mm, 0.91 - 1.32 MPa, 52.78% - 70.37, 0.42 - 0.84 gm(-2)h(-1) respectively. Total CO2 emission of each treatment in the period from tillage to harvest varied between 2149 - 2301 kg/da. Analysis of variance on total emission values showed that the difference between the treatments was significant (P<0.01). There was a significant relationship between penetration resistance of soil, tillage depth, and CO2 emission (P<0.01). Analysis of the treatments in terms of CO2 emission revealed that machine with horizontal axis I type tilling foot was more appropriate.Öğe Measurements and modelling of wind erosion rate in different tillage practices using a portable wind erosion tunnel(LITHUANIAN RESEARCH CENTRE AGRICULTURE & FORESTRY, 2016) Carman, Kazim; Marakoglu, Tamer; Taner, Alper; Mikailsoy, FarizArtificial intelligence systems are widely accepted as a technology providing an alternative method to solve complex and ill-defined problems. Artificial neural network (ANN) is a technique with a flexible mathematical structure, which is capable of identifying a complex nonlinear relationship between the input and output data. The objective of this study was to investigate the relationship between dust concentration and wind erosion rate, and to illustrate how ANN might play an important role in the prediction of wind erosion rate. Data were recorded via field experiments by using a portable field wind tunnel. The experiments were carried out for eight different tillage applications that include the conventional, six different reduced tillage and the direct seeding practices. Particulate matter (PM) concentration generally decreased with a decrease in number or intensity of tillage operations. Direct seeding resulted in the lowest PM,, concentration. After tillage applications, wind erosion rate varied between 113 and 1365 g m(-2) h(-1). Results showed that wind erosion rate was lower in direct seeding than in conventional and reduced tillage applications. In this paper, a sophisticated intelligent model, based on a 1-(8-5)-1 ANN model with a back-propagation learning algorithm, was developed to predict the changes in the wind erosion rate due to dust concentration occurring during tillage. In addition, the prediction of the model was made according to traditional methods of wind erosion rate by using the programme Statistica, version 5. The verification of the proposed model was carried out by applying various numerical error criteria. The ANN model consistently provided better predictions compared with the nonlinear regression-based model. The relative error of the predicted values was found to be less than the acceptable limits (10%). Based on the results of this study, ANN appears to be a promising technique for predicting wind erosion rate.Öğe SOME PHYSICOMECHANICAL AND NUTRITIONAL PROPERTIES OF BARBERRY (BERBERIS VULGARIS L.) FRUITS(WILEY-BLACKWELL PUBLISHING, INC, 2009) Akbulut, Mehmet; Calisir, Sedat; Marakoglu, Tamer; Coklar, HacerThe barberry (Berberis vulgaris L.) fruits growing wild in Turkey were analyzed for some physical (dimensions, geometric mean diameter, sphericity, bulk density, fruit density, volume, terminal velocity, hardness and porosity) and chemical (moisture, reducing sugar, ascorbic acid, total anthocyanin and phenolics, crude protein, crude oil, crude energy, crude fiber, ash, pH, acidity, alcohol-soluble extract and color) properties. Mineral content of barberry fruits growing wild in Turkey was determined by inductively coupled plasma-atomic emission spectrometry. The average pulp mass ratio, thickness, width, length, mass, volume, geometric mean diameter, sphericity and projected area were measured as 75.59%, 3.51 mm, 3.32 mm, 7.69 mm, 0.07 g, 71 mm(3), 4.46 mm, and 0.58 and 0.2535 cm(2), respectively. The energy, reducing sugar, protein, cellulose, oil, ash, acidity, ascorbic acid, total phenolics, total anthocyanin and soluble solid matter values of barberry fruits were established as 69.25 kcal/g, 6.52%, 10.32%, 9.42%, 0.84%, 1.12%, 3.10%, 256.48 mg/kg, 789.32 mg/100 g, 931.05 mg/kg and 19.4%, respectively. It is very important to evaluate the technological properties of equipment used in harvesting, transportation, storage and processing of fresh fruits. Also, the information supplied on the proximate composition of the barberry fruit is highly beneficial for human nutrition.