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DESIGNING A MULTIPLE PRODUCTION SYSTEM BASED ON CO2 CAPTURE AND UTILIZATION IN GLASS INDUSTRY
No full textThis research presents a pioneering, state-of-the-art multigeneration system that is specifically designed to tackle carbon dioxide emissions in glass production plants. This innovative system utilizes monoethanolamine absorption to extract carbon dioxide from glass production processes. The hydrogen gas used in the system is created through alkaline electrolysis and is supported by wind power. A portion of the hydrogen produced is used to react with carbon dioxide, producing methanol, while the remaining amount is stored in a storage tank. The system also produces valuable outputs such as electricity, district heating, and hot water. The design of the system incorporates other renewable resources, such as solar energy, to optimize its overall functionality. The system achieved a hydrogen production rate of 0.04491 kg/s and a methanol production rate of 0.1582 kg/s. Additionally, the system boasted an energy efficiency of 75.73% and an exergy efficiency of 36.59%, respectively.</p
Türkiye'deki Bazı Ticari Kahvelerin Element İçeriklerinin Belirlenmesi ve Sağlık Riski Değerlendirmesi
No full textKahve, insanların günlük yaşamlarının ayrılmaz bir parçası haline gelen ve dünya çapında en çok tüketilen içeceklerden biridir. Kahve tüketimine yönelik artan talep, dünya çapında çeşitli kahve türleri üreten birçok kahve markasının oluşmasına yol açmıştır. Kahvenin yaygın olarak tüketilmesinin nedenlerinden biri de insan sağlığı için gerekli elementleri içermesidir. Vücutta büyük miktarlarda bulunan başlıca mineraller ve daha küçük miktarlarda bulunan eser minerallerin gıda alımıyla desteklenmesi beslenmede önemli bir parametredir. Kahvede bulunan elementlerin toplam konsantrasyonlarının belirlenmesi, kahvenin besleyici kalitesinin değerlendirilmesini sağlar ve aynı zamanda insan sağlığı üzerindeki olumsuz etkilerine karar verilebilir. Bu çalışmada, farklı markalara ait bazı kahve türlerinde esansiyel -çinko (Zn), selenyum (Se), fosfor (P), sodyum (Na), mangan (Mn), magnezyum (Mg), potasyum (K), demir (Fe), bakır (Cu), krom (Cr), kobalt (Co), kalsiyum (Ca) ve bor (B)- ve esansiyel olmayan - titanyum (Ti), antimon (Sb), kurşun (Pb), nikel (Ni), molibden (Mo), kadmiyum (Cd), baryum (Ba), arsenik (As) ve alüminyum (Al) element içeriği indüktif eşleşmiş plazma-optik emisyon spektroskopisi (ICP-OES) ile analiz edilmiş ve sonuçlar insan sağlığı açısından yorumlanmıştır. Seçilen kahve türlerinin günlük 300 mL tüketimi ile alınan element yüzdeleri de cinsiyete göre kişi bazında hesaplanmıştır. Kanserojen risk ve kanserojen olmayan risk değerlendirmesini içeren sağlık riski değerlendirmesi yapılmıştır. Tüm kahve türlerinde K elementi konsantrasyonu en yüksek element olarak rapor edilmiştir. As, Cd, Mo, Sb, Ti elementleri tüm kahve türlerinde tespit edilmemiştir. Kadınların günlük Mg elementi alım yüzdesi tüm kahve türleri için %15,561 ile en yüksek olarak belirlenmiştir (kafeinsiz kahve, P1). Erkeklerde ise Mg elementi günlük alım yüzdesinin Milicano (P2), filtre kahve (P2) ve Türk kahvesi (P4) ürünleri dışında en yüksek olduğu tespit edilmiştir. Tüm örneklerin tehlike indeksi (HI) 1'den küçüktür, bu nedenle bu kahvelerin günlük 300 mL tüketimi düşük risk grubunda tanımlanmaktadır. Hedef kanserojen risk (TCR) değeri Klasik (Ürün 1) hariç tüm kahve türleri için 1×10-4'ün altında hesaplanmıştır. Ürün 1'in klasik kahvesinin TCR değeri 1×10-4'ten yüksek olduğu için günde 300 mL'den az tüketilmelidir.Coffee is one of the most consumed beverages worldwide, which has become an integral part of people's daily lives. The increasing demand for coffee consumption has led to the creation of many coffee brands producing various types of coffee around the world. One of the reasons for the widespread consumption of coffee is that it contains elements necessary for human health. Supplementation of food intake with essential minerals, which are present in large quantities in the body, and trace minerals, which are present in smaller quantities, is an important parameter in nutrition. Determining the total concentrations of the elements in coffee allows the assessment of its nutritive quality and at the same time, its adverse effects on human health can be decided. In the present study, essential- zinc (Zn), selenium (Se), phosphorus (P), sodium (Na), manganese (Mn), magnesium (Mg), potassium (K), iron (Fe), copper (Cu), chromium (Cr), cobalt (Co), calcium (Ca) and boron (B)- and non-essential - titanium (Ti), antimony (Sb), lead (Pb), nickel (Ni), molybdenum (Mo), cadmium (Cd), barium (Ba), arsenic (As) and aluminium (Al)- element content in some coffee types from different brands was analyzed by inductively coupled plasma-optical emission spectroscopy (ICP-OES) and the results were interpreted in terms of human health. Percentages of elements ingested with daily consumption of 300 mL of selected coffee types were also calculated on a person-by-person basis according to gender. Health risk assessment was performed involving carcinogenic risk and non-carcinogenic risk evaluation. In all coffee types, K element concentration has been reported as the highest element. As, Cd, Mo, Sb, and Ti elements were not detected in all types of coffees. A female's highest daily element intake percentage is Mg for all types of coffee with the highest concentration of 15.561% (decaffeinated coffee, P1). For a male, the Mg element daily intake percentage is also the highest except Milicano and filter coffee of P2 and Turkish coffee of P4. The hazard index (HI) of all samples was less than 1, thus, daily consumption of 300 mL of these coffees is defined in a low-risk group. The target carcinogenic risk (TCR) value was calculated below 1×10-4 for all coffee types except Classic (Product 1). Classic coffee of Product 1 should be consumed less than 300 mL/day since its TCR value is higher than 1×10-4
Yapay Zekâ Kavramının Ortaokul Türkçe Dersi Öğretim Programı ve Ders Kitaplarına Yansımaları
No full textNanosize Polymeric Foams and Microparticles Prepared In Situ From Janus-Type Microbubble Constitutions.
No full textImpact of surface pre-treatment on electrochemical performance of B4C-coated nickel foam electrodes
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Search for top squarks in final states with many light-flavor jets and 0, 1, or 2 charged leptons in proton-proton collisions at TeV
No full textSeveral new physics models including versions of supersymmetry (SUSY) characterized by R-parity violation (RPV) or with additional hidden sectors predict the production of events with top quarks, low missing transverse momentum, and many additional quarks or gluons. The results of a search for top squarks decaying to two top quarks and six additional light-flavor quarks or gluons are reported. The search employs a novel machine learning method for background estimation from control samples in data using decorrelated discriminators. The search is performed using events with 0, 1, or 2 electrons or muons in conjunction with at least six jets. No requirement is placed on the magnitude of the missing transverse momentum. The result is based on a sample of proton-proton collisions at TeV corresponding to 138 fb−1 of integrated luminosity collected with the CMS detector at the LHC in 2016–2018. With no statistically significant excess of events observed beyond the expected contributions from the standard model, the data are used to determine upper limits on the top squark pair production cross section in the frameworks of RPV and stealth SUSY. Models with top squark masses less than 700 (930) GeV are excluded at 95% confidence level for RPV (stealth) SUSY scenarios
