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Mathematical Modelling and Performance Analysis of Flat Plate Solar Dryer- CFD Simulation Approach
2021
Debela Geneti Desisa
This study focuses on the investigation of enhancing convective heat transfer between the absorber and the air inside a channel. The investigation approaches modeling different absorber through CFD simulation and validating the result with experimental data. Supplying air to both sides of the top and the bottom surfaces of the absorber increase the air mass flow rate and therefore increases the thermal efficiency of the dryer. The studies in a V-grooved absorber attain high hot air velocity; high thermal efficiency resulted from high turbulence created in the duct. For the sample taken with a flow range, 0.01kg/s to 0.06 kg/s, the high output temperature was observed in a lower temperature range and increases as the flow rate increases. At a flow rate 0.01 kg/s, the velocity of hot air passing over the V-grooved absorber attain 0.28 m/s and increased to 1.4 m/s as the mass flow rate increased to 0.06 kg/s. For the rectangular absorber, the velocity of hot air attains 0.15 m/s at a flow rate of 0.01 kg/s and increased to 1.46 m/s as the mass flow rate increases to 0.06 kg/s. The double-sided V-grooved absorber contributes 8 – 12.40% value more efficiency compared to the rectangular plate with the same flow orientation. Further investigation is recommended taking the quantitative analysis obtained in this study and generating qualitative data.
Afficher plus [+] Moins [-]The Effect of Different Phosphorus Doses Application on Yield and Nutrient Uptake of Sugar Beet (Beta Vulgaris L.) Plant
2021
Ahmet Demirbaş
In this study, the effect of different phosphorus doses application on the yield and nutrient uptake of sugar beet plant was investigated under field condition. The study was carried out in Sivas province in 3 replications according to the randomized plot design and Valentina was used as the sugar beet variety. Phosphorus doses were; 0 kg P da-1, 15 kg P da-1, 30 kg P da-1 and applied as triple super phosphate (TSP). Leaf samples were taken approximately 80 days after the planting of sugar beet plant, nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), iron (Fe), zinc (Zn), manganese (Mn), copper (Cu) concentrations and yield were determined at harvest. Research results indicated that the yield increased depending on the increasing phosphorus doses and the highest yield was obtained at 30 kg P da-1 dose with 8151.0 kg da-1. In addition, the highest nitrogen, phosphorus and potassium concentrations were found at 30 kg P da-1 dose (4.77% N, 0.74% P and 2.39% K, respectively). However, the research found that calcium and magnesium concentrations decreased with increasing phosphorus doses. While only iron concentration among microelements increased with phosphorus applications, zinc, manganese and copper concentrations decreased due to increasing phosphorus doses.
Afficher plus [+] Moins [-]Artan Dozlarda Bor Uygulamasının Antep Fıstığı (Pistacia vera L.) Çeşitlerinin Yeşil Aksam Bor Konsantrasyonu ve Diğer Besin Elementlerinin Alımı Üzerine Etkisi
2021
Ayfer Alkan Torun | Sadettin Bozgeyik | Ebru Duymuş
Antep fıstığı (Pistacia vera L.) son yıllarda Akdeniz ve Güneydoğu Anadolu bölgesinde giderek artan oranda bitki deseni içerisinde yer almaya başlayan bir bitki türüdür. Toprak ve çevre faktörleri bakımından bor (B) noksanlığının yaygın olabileceği bu bölgelerde bitkilerin özellikle B noksanlığına duyarlı Antep fıstığının B ile beslenme düzeyinin belirlenmesi oldukça önemlidir. Bu noktadan hareketle bu araştırma kapsamında büyüme dönemi olarak karagöz patlamasının %20 ve meyvenin mercimek büyüklüğü döneminde olduğu iki farklı dönemde yapraktan artan dozlarda B (%0; %0,2; %0,4; %0,6 ve %0,8) uygulamasının Antep fıstığı bitkisinin yeşil aksam B konsantrasyonu ve besin elementleri üzerine etkisi araştırılmıştır. Bu amaçla, bahçe koşullarında iki Antep fıstığı çeşidinin (Uzun ve Kırmızı) yetiştirildiği üretim alanlarındaki deneme tesadüf blokları deneme planına göre yürütülmüştür. Araştırma sonucunda bitki çeşitlerinin ve uygulanan gübre dozlarının, B konsantrasyonuna önemli düzeyde etkisinin olduğu belirlenmiştir. Bitki çeşitlerine göre tüm B uygulamaları altında B konsantrasyonunun Uzun çeşidine (%8,3) göre Kırmızı (%21) çeşidinde daha yüksek olduğu, ortalama B konsantrasyonunun Kırmızı çeşidinde 200,3 mg kg-1 iken, Uzun çeşidinde ise 176,3 mg kg-1 olduğu belirlenmiştir. Artan dozlarda B uygulaması ile bitkinin yeşil aksamındaki B konsantrasyonunun arttığı, bu artışların (%36,8) kontrole göre sadece %0,6 B doz uygulamasında istatistiksel olarak önemli düzeyde olduğu belirlenmiştir. Bor uygulamasının analizi yapılan makro (N, K) ve mikro (Zn, Fe, Mn) element konsantrasyonları üzerinde ise istatistiksel olarak önemli sayılabilecek bir etkisi saptanmamıştır.
Afficher plus [+] Moins [-]Forecasting future performance of irrigation schemes: The case of Bergama
2021
Sinan Kartal
Potential outputs of irrigation should be put forth to improve the yields in agricultural practices. Available water resources should efficiently be used to improve yields and inputs should be minimized. Performance assessment of irrigation schemes is an importance issue for improved yields and to take relevant measured. Statistical methods are used for performance assessment of irrigation schemes with the use of various indicators. Forecasts for future performance of irrigation shames will facilitate the steps to be taken by decision-makers to improve performance. In this study, time series – ARIMA method was used to forecast future performance of Bergama irrigation scheme for 2017-2021 period. The indicator values of annual irrigation water supply per unit command area, output per unit command area and total expenditure per unit command area for 2006-2017 period were used to estimate performance indicators for 2017-2021 period. In 2021, at 95% probability, the lowest annual irrigation water supply per unit-command area was calculated as 4365.10 m3 ha-1 and the highest as 16835.69 m3 ha-1; the lowest output per unit command area was calculated as -5076.10 € ha-1 and the highest as 10401.2 € ha-1; the lowest total expenditure per unit command area was calculated as -2200.41 € ha-1 and the highest as 1866.31 € ha-1. Present forecasts of time series -ARIMA method with the use of data of 2006-2016 period revealed that annual irrigation water supply per unit-command area and output per unit command area will increase and total expenditure per unit command area will decrease in years.
Afficher plus [+] Moins [-]Growth Performance and Carcass Characteristics of Slow Growing Hubbard Red JA57 in Different Raising Systems
2021
Ökkeş Akyar | Beyhan Yeter
In this study, Hubbard Red JA57 genotype, which growing slowly in mixed sex, were examined in indoor (KYS) and free-range raising systems (SYS). The study was carried out at the Kahramanmaraş Sutcu Imam University (KSU), Animal Production Application and Research Center for 12 weeks. Each treatment was represented by 3 groups containing 28 male chick (total 168 chick). During the indoor treatment, the chicks were raised in floor pens in a conventional house (3.7 birds/m2). In the free-range treatment, the chickens were housed in a similar indoor house (3.7 birds/m2); in addition, they also had a free-range clover paddock (0.9 bird/m2). All birds were provided with the same diets as ad-libitum. In two different raising systems; live weight, feed consumption, feed conversion ratio, survival rate, carcass and parts rates, edible giblets weight and rates, testicular weights and rates, rectal temperature and tonic immobility were examined. Results showed that the weekly feed conversion ratio was found to be significant at the 11th week and the additive feed conversion ratio at the 12th week. The difference between the groups in terms of rectal temperature and tonic immobility values, testicular weights and rates were found to be significant. In terms of average interaction; While the average rates of hot carcass, cold carcass, back, breast meat and neck were the same, the averages of thigh, bony breast and wing ratios were different. The highest mean abdominal fat rate was found in KYS females, the highest average gizzard rate in SYS females, the highest mean liver in KYS females, and the highest heart weight in SYS males.
Afficher plus [+] Moins [-]Propiyonik Asit Katkısının Toplam Karışım Rasyonu Yemin Aerobik Stabilite Özellikleri Üzerine Etkileri
2021
Ahmet Aslım | Berrin Okuyucu | Fisun Koç
Bu araştırmada, farklı düzeylerde propiyonik asit ilavesinin toplam karışım rasyonu yemin aerobik stabilite özellikleri üzerine etkileri araştırılmıştır. Çalışmada, propiyonik asit temeline dayalı katkı maddesinin dört farklı oranda ilavesinin (%0, 1,5, 3,0 ve 4,5), 26°C ve 30°C depolama koşullarında etkisi araştırılmıştır. Yem örnekleri her muamele grubunda 3’er tekerrür olmak üzere 7 gün süre ile depolanmıştır. Aerobik stabilite süresince yem örneklerinde kimyasal ve mikrobiyolojik parametrelere ilişkin analizler yürütülmüştür. Her muamele grubunda sıcaklık değerleri ve ortam sıcaklığı 7 gün süreyle sıcaklık sensörleri ile ölçülüp kaydedilmiştir. Araştırmada katkı maddesi ilavesi toplam karışım rasyonu yemin pH, kuru madde, nötral çözücülerde çözünmeyen lif ve maya içeriklerini düşürmüş, ham protein, ham yağ, suda çözünebilir, laktik asit ve laktik asit bakteri içeriklerini yükseltmiş, küf gelişimini ise önlemiştir. Araştırma sonucunda %4,5 oranında propiyonik asit ilavesi toplam karışım rasyonunun 26°C 7 gün, 30°C ise 5 gün süre ile stabil kalmasını sağlamıştır.
Afficher plus [+] Moins [-]Çok Değişkenli İstatistiksel Analizler ile Akkaya Gölü Rezervuar Topraklarındaki Ağır Metallerin Veri Analizi
2021
Fusun Yalçın
Tarım sahalarının çevresinde, sulama amaçlı yapılan göllerin rezervuar alanlarında biriken ağır metallerin kökeninin belirlenmesi ve toksik etkisinin anlaşılmasında, veri analizinin yapılması önemlidir. Çalışmanın amacı, Akkaya Gölü rezervuar sahasındaki toprakların kimyasal içeriklerinde çok değişkenli istatistik analizler kullanılarak Akkaya Gölü rezervuar sahasında tespit edilen ağır metallerin kendi arasındaki davranışlarını bunlar arasındaki ilişkilerinin belirlenmesi ve bu metallerin olası kökeninin açıklanması şeklindedir. Kimyasal analiz içeriklerinin bollukları Mg > Al > Fe > S > Ti > Zn > V > As > Cu > Ni > Pb > Co > Mo > Sn > Cd > Hg olarak sıralanmıştır. Fe ile Mg, Si, K, Co, V, Cu, As, Ni, Zn ve Pb arasında yüksek pozitif korelasyon bulunur. Faktör analizine göre toplam varyans 72.080 (% kümülatif) olup, 3 (üç) faktöre ayrılmıştır. Hiyerarşik kümeleme analizine göre 3 grup ve elementlerin kümeleme analizine göre 4 grup oluşmuştur. Bu grupların kendi aralarında benzer özellik sundukları anlaşılmıştır. Çok değişkenli istatistik analizleri bu çalışma için başarılı olmuştur.
Afficher plus [+] Moins [-]Determination of Some Agronomic and Fruit Quality Characteristics of Some Watermelon Accessions from Turkish Watermelon Germplasm
2021
Ercüment Atlı | İlknur Solmaz | Nebahat Sarı | Haşim Kelebek
This study has been conducted to determine the fruit quality parameters such as sugar and carotenoid content as well as plant and fruit characteristics of 11 local watermelon genotypes from watermelon genetic resources collection of Cukurova University, Department of Horticulture. First and 50% male and female flowering period, main stem length, main stem diameter, number of nodes on main stem, total yield, fruit weight, fruit length, fruit diameter, fruit rind thickness, total soluble solids (TSS), sugar and carotenoid contents were examined. Although there is no significant difference for main stem diameter and number of nodes on the main stem, significant differences were obtained for total yield, sugar and carotenoid composition of the genotypes. Carotenoid and sugar analysis were performed with a high-performance liquid chromatographic method coupled with diode-array detector (HPLC-DAD) and HPLC coupled with refractive index detector (RID), respectively. In all studied genotypes, cis-13-lycopene and β-carotene were the most abundant compounds. As expected for watermelon genotypes, the main sugar found in all studied genotypes was fructose. According to PCA analyses, genotypes were characterized by physical and chemical composition. Overall evaluation of results revealed that Kar 147 had better potential with carotenoid, sugar contents and fruit characteristics.
Afficher plus [+] Moins [-]Hygiene Practice and Protective Management in Biological and Pharmaceutical Laboratory
2021
Mst. Nasrin Banu | Md. Salauddin | Kazi Md. Al Noman | Mst. Shabnam Mostari | Md. Suruj Ahammed | Md. Masud Parvej
Throughout the world, Pharmaceutical sector is an instant component in health-care systems. It involved in invention, improvement, propagation, and trading of medicines for human health and animal health. Scientific investigation is the base of pharmaceutical industries which helps to improve of new formulation of various drugs that used to treatment of different diseases and confusions. Proper personal hygiene is mandatory in pharmaceutical sector which will be helpful to control the quality of the products and minimize various types of filth that effects virtue of medicinal product. In pharmaceutical industry hygienic and safety measures are deliberated two utmost significant sights. To ensure the safety of workers, it is compulsory to fix practices of hygienic management and monitoring filth inside the biological and pharma laboratory as well as industry. This study will help to set an occupational health of the researchers, workers in laboratory by making intimation about the bad effects of personal hygiene and less protective management.
Afficher plus [+] Moins [-]Effect of Irrigation and Fertigation Levels on Cabbage (Brassicaceae Oleracea var. capitata L. Grandslam F1)
2021
Serhat Ayas
There are very few studies on cabbage at different fertigation levels in the Marmara Region, where this study was conducted. In this respect, our study has a unique quality. This study was carried out in Bursa Uludag University Yenisehir İbrahim Orhan College application greenhouses in 2014-2015 years. Five different irrigation treatments (T1: 100% (full irrigation), T2: 75%, T3: 50%, T4: 25%, T5: 0% (non-irrigated)) and two different fertigation treatments (F1.0: 100% (100:100:100 NPK fertigation and F0.5: 50% (50:50:50 NPK) fertigation) were combined together to determine the effects on yield and quality parameters of cabbages. The amount of irrigation water in 2014 and 2015 years varied between 0.0-620.0 mm and 0.0-660 mm, respectively, while evapotranspiration values varied between 150.0-700 mm and 180.0-710 mm, respectively. It was determined that irrigation water and fertigation levels, yield and quality parameters of cabbages were affected significantly. In both application years, the highest yield was obtained from T1F1.0 treatment as 73.2 and 68.4 tons ha-1 respectively, while the lowest yield was obtained from T5F1.0 treatment as 3.0 and 3.0 tons ha-1, respectively. In 2014 and 2015 years the crop response factor values of cabbage were calculated as 1.20-1.19 and 1.23-1.18, respectively. T2F1.0 and T2F0.5 treatments can be recommended as the most effective irrigation and fertilization levels of cabbage.
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