细化搜索
结果 321-330 的 4,588
Gluten ve Gluten Metabolizması Bozukluğuna Bağlı Oluşan Hastalıklar 全文
2024
Aybüke İmik | Ceren Gezer
İnsanların beslenmesinde gluten içeren besinler önemli yer tutmaktadır. Gluten metabolizması bozukluğuna bağlı oluşan hastalıklar bulunmakta olup bunlar çölyak hastalığı, buğdaya karşı IgE aracılı alerji ve çölyak dışı gluten duyarlılığı olarak sınıflandırılabilir. Bireylerin gluten duyarlılıkları arasında farklılıklar olup gluten duyarlılığı olan bireylerin gluten içeren besinleri tüketmeleri durumunda en başta bağırsak dokusu olmak üzere birçok dokuda histopatolojik yapılarında ve otoimmun sistemlerinde önemli değişiklikler meydana gelebilir. Dokuların histopatolojik yapısındaki değişiklikler dokulara göre değişmektedir. Otoimmun sistemdeki değişiklikler ise Transglutaminaz, Gliadin, IgA, IgG, CD4 ve CD8 gibi parametrelerden en az birinin veya birkaçının incelenmesi ile tespit edilebilir. Gluten metabolizması bozukluğuna bağlı oluşan hastalıklarda etkili tedavi şekli glutensiz/gluten kısıtlı diyet olmakla birlikte bağışıklık sisteminde rol alan mekanizma ve moleküllerin saptanması yeni tedavi yöntemlerini oluşturulmasına yol gösterebilir. Bu çalışmada amaç gluten ve gluten metabolizması bozukluğuna bağlı oluşan hastalıklar arasındaki ilişkinin derlemesidir.
显示更多 [+] 显示较少 [-]Effects of Ultrasound Application on the Improvement of Probiotic Properties and Antioxidant Activity of Kluyveromyces marxianus, Saccharomyces cerevisiae var. boulardii and Saccharomyces cerevisiae 全文
2024
Hamza Goktas | Demet Turali | Cansu Agan | Osman Sagdic
The objective of this study was to ascertain the impact of ultrasound application on the probiotic characteristics and antioxidant activity of yeasts. In this context, the pH changes, probiotic properties and antioxidant activities of K. marxianus (Km), S. boulardii (Sb) and S. cerevisiae (Sc) were determined by ultrasound application at different durations (5, 15, 30 and 60 minutes at 24 kHz). The lowest pH values were determined for cultures of Km (ultrasound non-applied K. marxianus), Sb-30 (30 min. ultrasound applied S. boulardii) and Sc-5 (5 min. ultrasound applied S. cerevisiae) as 4.48, 5.15 and 5.26, respectively. The hydrophobicity values of the yeast strains varied between 6% and 24%, increased with ultrasound application. Although S. boulardii had the highest tolerance to low pH and bile salts, the resistance of all yeast to low pH and bile salts decreased with ultrasound application. K. marxianus had the least survival under in vitro conditions, but ultrasound application increased survival of K. marxianus strains and slightly affected the survival rate of S. boulardii and S. cerevisiae. Increasing of duration time of ultrasound application resulted higher antioxidant activity and so the highest antioxidant activity was determined for Sb-60. Finally, ultrasound application could be used for the development of hydrophobicity and antioxidant properties of yeast cultures.
显示更多 [+] 显示较少 [-]Çimento Yerine Sığır Gübresi Külünün Kısmi İkamesi ile Üretilen Hafif Betonun Bazı Özelliklerinin Belirlenmesi 全文
2024
Ahmet Korkmaz | Sırrı Şahin
Bu çalışmada; Türkiye'de kırsal alanlarda ısınma amaçlı olarak kullanılan yenilenebilir enerji kaynaklarından güneşte kurutulmuş sığır gübresi külünün (SGK) farklı oranlarda çimento yerine kullanılmasının, hafif betonun basınç dayanımı üzerine etkisinin araştırılması amaçlanmıştır. Araştırmada, hafif agrega olarak pomza bağlayıcı olarak da CEM I 42,5 R tipi çimento ve SGK ikamesi kullanılmıştır. Karışımlara çimento yerine ağırlıkça belirli oranlarda (%0, %5, %10, %15 ve %20) SGK ikame edilerek 5 grup halinde toplam 45 adet 150×150×150 mm’lik küp numune üretilmiştir. Taze beton deneyleri olarak-birim ağırlık deneyleri; serleşmiş beton deneyleri olarak da kuru birim ağırlık, su emme ve basınç dayanımı deneyleri yapılmıştır. SGK kullanılan numunelerde, SGK ikamesinin artması ile kontrol örneklerine göre su emme miktarında bir miktar artış, basınç dayanımlarında ise bir miktar düşüş görülmüştür. %5, %10, %15 ve %20 oranlarında SGK ikamesi ile üretilen numunelerin 28 günlük basınç dayanımı düşüş değerleri kontrol örnekleri ile karşılaştırıldığında sırasıyla %4, %4,6, %5,5 ve %6 olarak belirlenmiştir. Çimento yerine %20 SGK ikamesinin uygulanması, numunelerin 28 günlük basınç dayanımlarında %6’lık bir azalma gözlemlenmiştir.
显示更多 [+] 显示较少 [-]Synthesis of Silver Nanoparticles using Cellulose and Starch Extracted from Brewer Spent Grain: Assessment of their Antimicrobial and Preservatives Activities 全文
2023
Clement Olusola Ogidi | Ogo Philip Emmanuel | Olanrewaju Oludotun Daramola | Oyedolapo Bamigboye | Olu Malomo
Non-porous materials like cellulose and starch can be extracted from agro- industrial wastes and incorporated with nanoparticles for effective biotechnological purposes. In this study, silver nanoparticles (AgNps), silver-cellulose nanoparticles (AgNps-C) and silver-starch nanoparticles (AgNps-S) were characterized by UV-visible spectroscopy. Fourier transform infrared spectroscopy (FTIR) was used to identify viable biomolecules involved in capping and active stabilization of AgNps. Average sizes and morphologies of AgNps, AgNps-C and AgNps-S were further analyzed by scanning electron microscopy (SEM) and the percentage composition of each element was investigated by energy-dispersive X-ray spectroscopy (EDS). Antimicrobial activity of the synthesized AgNPs-C and AgNPs-S was tested against multiple antibiotic resistance microorganisms isolated from fish and meat. Zones of inhibition displayed by AgNPs-C and AgNPs-S ranged from 8.00 to 13.30 mm and 5.00 to 10.30 mm, respectively. The Minimum inhibitory concentration (MIC) for AgNPs-C and AgNPS-S ranged from 125 µg/mL to 500 µg/mL and 500 µg/mL to 1000 µg/mL, respectively. AgNPS-S and AgNPs-C inhibited the growth of microorganisms associated with spoilage of fish and meat. The bio-applications of AgNP –C and AgNP-S can be exploited in food industries as preservative agent or incorporated to packaging materials to elongate the shelf life of food products and reduce the side effects attributed to chemical preservative agents.
显示更多 [+] 显示较少 [-]Profitability and Technical Efficiency Analysis of Rice Production in Quan’ Pan Local Government Area of Plateau State, Nigeria 全文
2023
Vihi Samuel Keghter | Makwin Francis Malel | Jesse Birma | Owa Grace Tijesu | Selzing Peter Musa | Ochelle Blessing | Mwolgwan Nandom
This study investigated how profitable and technically effective rice farming was in Quan’ Pan Local Government Area of Plateau State, Nigeria. Using a multistage sample method, 120 respondents were drawn. The study’s findings proved that the farmers were 40 years old on average. The men were higher in numbers constituting 81.0% of the study population. 83% of the people were married and a greater number (81%) of them had at least some form of formal education with a typical household size of 9 persons. Findings from the study also showed that the farmers owned an average of 2.0 hectares of farmland and had acquired an average farming experience of 12 years. For the most of them (78.0%), farming was their primary occupation. The result also demonstrated that 78.0% never accessed credit or bank loans for farming as majority (63%) of the respondents acquired their farmlands through inheritance. The entire cost (total cost) of farming operation/ha incurred by the farmers was 139733 while the average output obtained per hectare was 699kg at a prevailing market/selling price of 285/kg. The total revenue (TR) measured in naira value of 199, 215 was realized. Gross margin (GM) and net farm income (NFI) stood at 70932 and 59482 respectively. The return on investment (ROI) was 0.42 meaning that for every naira spent on rice production, a profit of 0.42 is made. Age, educational level, farm size, farming experience and extension contact all had positive direct relationship with net income from rice production at 1%. The rice growers’ mean technical efficiency score was 0.659. Major constraints to rice production were high fertilizer prices (72%), inadequate capital (53%), lack of improved seeds (47%). The research suggests that government should subsidize farming inputs like recommended fertilizer and herbicides so as to reduce the over bearing cost burden of these inputs on farmers. Financial institutions should make credit facilities available and affordable to the farmers.
显示更多 [+] 显示较少 [-]Gemlik Çeşidi Zeytin Fidanının Su Stresine Bağlı Bazı Morfolojik Ve Fizyolojik Değişikliklerinin Belirlenmesi 全文
2023
Yasin Mercan | Talih Gürbüz
Bu araştırma, tarla koşullarında saksılarda yetiştirilen dört yaşlı “Gemlik” çeşidi zeytin fidanları üzerinde yapılmıştır. Araştırmada; farklı sulama uygulamalarında morfolojik ve fizyolojik parametreler göz önüne alınarak zeytin fidanlarının kuraklık stresine karşı tepkileri incelenmiştir. Araştırma, 2021 yılında, Aydın Adnan Menderes Üniversitesi Ziraat Fakültesine bağlı Araştırma ve Uygulama Çiftliğinde gerçekleştirilmiştir. Deneme tesadüf parseli deneme desenine göre 3 tekerrürlü olarak kurulmuştur. Sulama konuları, bitki su tüketiminin %20 (I20) %40 (I40) %60 (I60), %80 (I80), %100 (I100) ‘ü kadar su uygulanması şeklinde oluşturulmuştur. Çalışma sonucunda; sulama sezonu boyunca konulara uygulanan sulama suyu miktarları 16.32-81.57 L saksı-1 ve buna karşılık elde edilen bitki su tüketimi değerleri ise 19.49-85.08 L saksı-1 arasında değişmiştir. Konulara göre bitki boyunun 3.50 cm ile 11.00 cm, sürgün uzunluğunun 0.14 cm ile 12.4 cm, gövde çapının 0.70 mm ile 2.11 mm, sürgün çapının 0.53 mm ile 1.84 mm arasında değiştiği saptanmıştır. Konulara göre elde edilen yaprak oransal su içeriği değerleri %52.61 ile %71.68, stoma iletkenliği değerleri 260.29 mmol m-2 s-1 ile 535.80 mmol m-2 s-1, klorofil miktarı değerleri 78.00 ile 82.76, yaprak sıcaklığı ve hava sıcaklığı farkı ise 1.93°C ile 5.31°C arasında değiştiği belirlenmiştir. Sonuç olarak, Gemlik çeşidi zeytinin topraktaki nem eksiğine duyarlı bir bitki olduğu, morfolojik ve fizyolojik parametrelerin yetişme mevsimi boyunca sulama suyuna bağlı olarak değiştiği, bu parametrelere ilişkin elde edilen bulgular göz önüne alındığında 4 günde bir eksilen nemin %60’ının (I60) uygulanması önerilebilir.
显示更多 [+] 显示较少 [-]An Examination of the Relationship Between Agricultural Value Added and Agricultural Supports with Panel Simultaneous Equation Systems 全文
2023
Serife Ozsahin | Emel Akbal | Şerife Koç
Agricultural support is a crucial way to overcome the difficulties of long agricultural production process, lack of capital and low productivity. Moreover, the fact that increasing the supply is not possible in a short while makes agricultural support more important. Different agricultural structures of countries imply different agricultural support values. This paper examines the simultaneous relations between agricultural support and agricultural value added in the six developing countries with the highest agricultural production value. Simultaneous equation systems are estimated by Two-Stage Least Squares method using annual data for the 2002-2018 period. The findings suggest that there is a simultaneous positive and statistically significant relationship between agricultural value added and agricultural supports.
显示更多 [+] 显示较少 [-]Exploring the Efficacy of Essential Oils in Laboratory Conditions for Controlling Mediterranean Fruit Fly Ceratitis capitata (Wiedemann) (Diptera: Tephritidae) 全文
2023
Esengül Özdemir
The Mediterranean fruit fly (Medfly), Ceratitis capitata (Wiedemann) (Diptera: Tephritidae), poses a significant threat to agriculture worldwide. This study examines the potential insecticidal effects of essential oils from Mentha arvensis and Cinnamomum zeylanicum on controlling C. capitata under laboratory conditions. Even at low concentrations, toxicity assays indicated that both essential oils significantly increased the mortality of adult Medflies. The concentration-dependent effect of these oils on C. capitata mortality is demonstrated, with Mentha arvensis achieving 100% mortality within 48 hours at 1% concentration and Cinnamomum zeylanicum exhibiting rapid efficacy, reaching a low LC50 value after only 1 hour of application. The concentration and application time of essential oils were found to have a significant impact on their effectivness. This study highlights the potential of essential oils for controlling C. capitata populations. Essential oils offer a sustainable and eco-friendly alternative for managing C. capitata but further studies are necessary for their successful incorporation into integrated pest management programs.
显示更多 [+] 显示较少 [-]Molecular Characterization of Dermanyssus gallinae in Türkiye Based on 16S and 18S rDNA 全文
2023
Nafiye Koç İnak
The poultry red mite, Dermanyssus gallinae (De Geer, 1778), is widely regarded as the significant ectoparasite of egg-laying hens worldwide. Since many molecular studies on poultry red mites have focused on analyzing COI and ITS1-2 genes, the present study aimed to identify 16S rDNA and the relatively understudied nuclear 18S rDNA genes of Turkish D. gallinae populations. Twenty-eight different D. gallinae populations were collected from henhouses throughout Türkiye, and the target genes were amplified using conventional PCR after morphological analysis. Haplotype analyses of the 16S rDNA sequences revealed 14 different haplotypes, with Turkish D. gallinae grouped into two of these haplotypes. The intra-species genetic variation of the 18S rDNA and 16S rDNA sequences examined in the present study and the available sequences in public GeneBank were determined as 0.17% and 0.53%, respectively. The obtained sequences belonging to D. gallinae from Türkiye were submitted to GenBank for the first time. Given the importance of identifying genetic diversity within and between species across different geographical regions, the obtained data may contribute substantially to the genetic knowledge of the PRMs.
显示更多 [+] 显示较少 [-]Landscape Design in Hospital Gardens: The Example of Selcuk University Medical Faculty Hospital 全文
2023
Ruhugül Özge Gemici
Hospital gardens, located within urban open-green areas, are places created for patients coming to the hospital, their relatives and the staff working in the hospital to spend time in an environment where they can renew themselves. The importance of these places is increasing day by day. The purpose of this study is to examine the landscape design of the Selcuk University Faculty of Medicine hospital garden located on the Selcuk University Alaeddin Keykubad Campus. The findings show that the hospital garden was generally not designed in accordance with landscape design principles. With the suggestions developed, this hospital garden can be redesigned in accordance with landscape design principles and made more comfortable for people using the hospital garden.
显示更多 [+] 显示较少 [-]