خيارات البحث
النتائج 211 - 220 من 260
Inward Processing Regime Promotion System in Vegetable Oil Industry: A Case Study of Turkey
2017
Sinan Duru | Dilşat Bozdoğan Konuşkan | Oğuz Parlakay
This study was conducted to determine applicability of the Inward Processing Regime (IPR) in enterprises which are vegetable oil producers and exporters. The data was obtained from 26 vegetable oil producer and exporter enterprises by using survey method. Frequency tables, indices, and percentage calculating were used to analyse Data. Also, SWOT analysis was used to determine the strengths, weaknesses, opportunities and threats in the sector, and relationship among some variables were examined with correlation coefficient. According to research findings, 25 of the enterprises (96%) utilised the IPR. Since the enterprises started to use that system; availability of cheap raw material, rate of capacity utilisation, market share, and export value all have increased. In addition, raw material was found as an important expense item, and the most important problems were qualified as raw material inadequacy and high input prices.
اظهر المزيد [+] اقل [-]Determination of Malondialdehyde (MDA), Superoxide Dismutase (SOD) and Glutathione Peroxidase (GPx) Levels in Kangal Dogs with Maternal Cannibalism
2017
Nazlı Ercan | Mustafa Koçkaya
Oxidative stress, which plays an active role in the pathogenesis of various diseases, continues to be relevant in assessing the condition changes such as aggression. Some of Kangal dogs have been found to eat their own puppies during their first 24 hours following birth, as a case called maternal cannibalism. The present study aims to determine the levels of serum malondialdehyde (MDA), which is a product of lipid peroxidation, and serum glutathione peroxidase (GPx) and superoxide dismutase (SOD) enzymes, which are the parameters of antioxidant defense system, and total protein and albumin levels and to show their relationship with cannibalism. The study material consists of blood and blood serum of 30 Kangal dog breed in total, 15 of which have maternal cannibalism and 15 haven’t observed maternal cannibalism as a control group. Glutathione peroxidase, superoxide dismutase, malondialdehyde levels were investigated by means of spectrophotometric method in blood serum of these animals. The difference between the mean values of total protein, GPx, SOD, MDA and albumin was statistically significant in the results obtained. These findings conclude that oxidative stress and antioxidative metabolism plays a role in the pathogenesis of cannibalism in dogs.
اظهر المزيد [+] اقل [-]A Review on Food Production with 3 Dimensional (3D) Printing Technology
2017
Celalettin Değerli | Sedef Nehir El
Three dimensional (3D) printing technology, have been quite popular in recent years. It came out first in the area of material production, but now, it has been applied on the other possible fields like food production. In this review, historical period of 3D printing, 3D printer types and working principles, studies on 3D food printing until today and the raw materials used in this studies were investigated. Studies on food printing was also categorised according to food types. Also, the impacts of 3D printing technology on food sector from the point of producer and consumer and future needs were discussed.
اظهر المزيد [+] اقل [-]The Determination of Heat Energy Requirement for Greenhouses with Different Hardware under Climate Conditions Antalya
2017
Abdullah Nafi Baytorun | Sait Üstün | Adil Akyüz | Ali Çaylı
In Mediterranean climate region, during certain times of the year the daily average temperature decreases under 12°C. In such conditions, greenhouse heating is essential to be able to get the high quality yield that is expected from greenhouses. The cost of heating varies from 20% to 60% of the total costs depending on the climate of the region, size, type and hardware of the greenhouse and type of plant grown in the greenhouse. The heat requirement in greenhouses is calculated based on the rudiments defined by DIN 4701 standards. However, the real temperature in greenhouses is higher than the outside temperatures used in calculations. For this reason, the heat requirement in greenhouses should be calculated by taking temperature increases that are caused by ventilation temperature and heat storage capability into consideration. In this study, the heat energy need of Antalya which is located in Mediterranean region is assessed according to its climate conditions. In the calculations, the different hardware structures are considered and the level of energy that can be saved is calculated. As a result of the calculations, depending on the month of the year, 12% to 29% difference is observed between energy requirement calculations based on the indoor temperature increases and energy requirement calculations based on outside temperature values.
اظهر المزيد [+] اقل [-]Willingness to Pay Additional Water Rate and Irrigation Knowledge of Farmers in Dinar Karakuyu Irrigation Areas in Turkey
2017
Mevlüt Gül | Kutlan Uzunkaya
Water which has become commodity product which is an important product today. Turkey is not a water rich country. In this study, agricultural enterprises in the field of Irrigation Project in Dinar Karakuyu which was implemented in 1992 by DSI. The study analysed which factors affect the willingness to pay additional irrigation water rate with the help of logit model and the irrigation knowledge of farmers was determined by Likert scale. Dinar Karakuyu irrigation network has begun to lose the function in the region. It was supposed 100% irrigation rate but decreased by approximately 9% today. In this context, DSI (General Directorate of State Hydraulic Works) plans to rehabilitation work in the same area. The main material of this study was data obtained from 67 agricultural enterprises through a survey covered by the Irrigation Rehabilitation Project in the province of Afyonkarahisar Karakuyu Dinar. The data was gathered with the help of questionnaires which were answered by farmers in Karakuyu Dinar region. The results indicated that 74.6% of farmers were willingness to pay additional water charge. The data were statistically analysed with the use of the logit model. The model results show that agricultural income, farmers’ educational level, computer ownership, attendance of agricultural training activities, family size and agricultural experience were positive factors affect farmers’ willingness to pay additional water fee.
اظهر المزيد [+] اقل [-]Determination of Antimicrobial Effects of Probiotic Lactic Acid Bacteria and Garlic Extract Against Some Foodborn Pathogenic Bacteria
2017
Selin Kalkan | Elçin Taş | Zerrin Erginkaya | Emel Ünal Turhan
In this study, it was investigated that the inhibition effect of some lactic acid bacteria (Lactobacillus acidophilus NCC68, Lactobacillus casei Shirota, Lactobacillus rhamnosus (Ezal, commercial starter cultures)) which possessed with probiotic characteristics, against Bacillus cereus, Salmonella Enteritidis, Escherichia coli, Escherichia coli 0157:H7 ATCC 35150 and Staphylococcus aureus ATCC 25923. Besides, the inhibitory effect of probiotic cultures which used with meat and meat product additives that garlic extract over the antagonistic effects of sensitive pathogens were investigated in vitro. Consequently, the whole of lactic acid bacteria and garlic extract which were used in this study, showed inhibition effects against all selected pathogenic bacteria. Staphylococcus aureus ATCC 25923 was determined as the most sensitive pathogenic bacteria while Bacillus cereus was the most resistant bacteria against lactic acid bacteria and garlic extract. There was a distinctive increase in inhibition effects were observed by used of a combination with lactic acid bacteria and garlic extract.
اظهر المزيد [+] اقل [-]Influences of Packaging on Consumers’ Choice of Agricultural Products in Enugu, Nigeria
2017
Chukwuebuka Ebube Wilfred | Tobenna Valentine Onyeakusiobi
This study focused on packaging and its influence on consumers’ choice of agricultural products in Enugu metropolis, Nigeria. In addition, it also aimed to ascertain the relationship between packaging of agricultural products and their perceived quality. The study population is made up of agro-product consumers in Enugu metropolis, Nigeria. A total of 165 questionnaires were administered to respondents. Data obtained through questionnaires were tabulated and analyzed using simple percentages while the chi-square was used to test the research hypotheses. The major findings of this study were that packaging has a direct relationship both to consumers’ choice of agricultural products and their perception of the quality of such products. Accordingly, the researchers conclude and recommend that improved packaging design for agricultural products is essential in attracting consumers and positively influencing their choice of purchase.
اظهر المزيد [+] اقل [-]The Effects of Plant Secondary Compounds on Herbivorous Insects
2017
Oğuzhan Yanar | Elif Fatma Topkara
Plants have developed mechanical and chemical defense strategies that are effective against herbivores. Plants contain chemicals that are known as secondary metabolites (allelochemical) and these chemicals do not directly involve in organisms’ reproduction and growth, on the other hand, they affect survival, growth and behavior of species. These compounds usually take ecological tasks and plants use these compounds against diseases, parasites, and predators for interspecies competition. It is known through the observations on feeding of herbivorous insects that these compounds act as deterrent chemicals or they are toxic against them. Feeding is one of the most fundamental and the most important behaviors for herbivorous insects. Even though host plant preference of herbivores is partially depend on nutrients, this behavior greatly depends on secondary chemistry of plants. Effects of secondary compounds on herbivorous insects can be positive or negative.
اظهر المزيد [+] اقل [-]Bazı Yerli ve Yabancı Trabzon Hurması (Diospyros kaki L.) Çeşit ve Tiplerinin Morfolojik ve Moleküler Karakterizasyonu
2017
Turgut Yeşiloğlu | Yıldız Aka Kacar | Bilge Yılmaz | Meral İncesu | Berken Çimen
Çukurova Üniversitesi, Ziraat Fakültesi, Bahçe Bitkileri Bölümünde yürütülen bu çalışmada 20 trabzon hurması çeşit ve tiplerinde morfolojik ve moleküler karakterizasyon yapılmıştır. Çalışmada morfolojik karakterizasyon için ağaçlarının gelişme durumu, büyüme şekli, dal yapıları ile yaprak, meyve ve tohum özellikleri incelenmiştir. Morfolojik karakterizasyon sonucu elde edilen verilerde, trabzon hurması çeşit ve tiplerinden oluşan popülasyon içindeki benzerlik katsayısı, temel bileşenler analizi (TBA) ve kümeleme analizi yapılarak morfolojik dendrogram oluşturulmuştur. TBA analizi sonucunda ilk üç temel faktör grubunun popülasyon varyansının %55,11’ini tanımladığı saptanmıştır. Çeşit ve genotiplerden oluşan 20 birey içerisindeki benzerlik indeksi morfolojik özellikler bakımından %6,01 ile %67,47 arasında değişim göstermiştir. Yapılan rastgele çoğaltılmış polimorfik DNA (RAPD) analizlerine göre, çalışmada kullanılan genotipler arasındaki genetik polimorfizmin yüksek olduğu saptanmıştır. Belirtilen bu polimorfizme rağmen, bazı genotiplerin yakın genetik ilişkide olduğu da tespit edilmiştir. ‘Hana Fuyu’ (Fr) ve ‘Hachiya’ (Fr) genotipleri arasında RAPD sonuçlarına göre %82 oranında benzerlik tespit edilmiştir. ‘Fuji’ genotipinin ise belirtilen bu genotiplerle genetik benzerliğinin yaklaşık olarak %80 civarında olduğu belirlenmiştir. Ayrıca ‘Kaki Tipo’ (Fr), 07 TH 05, 07 TH 06 ve 33 TH 01 genotiplerinin aynı grup içerisinde kümelendiği ve benzerlik oranlarının %65’in üzerinde olduğu tespit edilmiştir.
اظهر المزيد [+] اقل [-]Effect of Silver Nitrate Solvent on Total Protein, Total Phenolic and Some Antioxidant Enzyme Activities in Cell Suspension Culture of Capsicum annuum L.
2017
Sinan Aydın | Cemil İşlek | Bengü Türkyılmaz Ünal
Heavy metal pollution is a significant environmental problem with negative potential impacts on agriculture and human health. In this study, calluses were obtained by using in vitro germinated hypocotyl explants of pepper seedlings and cell suspensions were prepared from these calluses. The effect of silver nitrate (AgNO3) solution added in different concentrations and times to cell suspension cultures of pepper on total protein and total phenolic compound amounts, superoxide dismutase and peroxidase enzyme activities were analysed. Total protein and total phenolic amounts, superoxide dismutase and peroxidase enzyme activities were detected by spectrophotometric methods. When the effects of silver metal on pepper plant were examined, it was determined that silver metal reduced the total protein and phenolic content in the pepper plant cells and especially at higher concentration, in the first 24 hour period, antioxidant enzyme activities increased.
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