Sürdürülebilir Kalkınma Amaçları
Yazarlar
- Gıdık, Betül(3)
- Ekincioğlu, Yavuz(2)
- Kepceoğlu, Abdullah(2)
- Akar, Bülent(1)
- Akar, Zeynep(1)
- Akpolat, Hacer(1)
- Alkan, Ozan(1)
- Alwazeer, Duried(1)
- Ayata, Ümit(1)
- Bulu, Menekşe(1)
- Can, Zehra(1)
- Demir, Çağlar(1)
- Demiroğlu Çiçek, Sümeyra(1)
- Efe, Fatih Tuncay(1)
- Gürleyen, Levent(1)
- Kaymakoğlu, Hacer(1)
- Onemli, Fadul(1)
- Tunçtürk, Yusuf(1)
- Türk, Mutlu(1)
- Türkhan, Ayşe(1)
- Yıldırım Çelik, Safinur(1)
- Çakıcıer, Nevzat(1)
- Öztürk, Bilge(1)
Yayınlar
- MakaleAçık Erişim2025Theoretical Investigation of the Molecular Properties of the Fluoroaniline and Fluoroanisole Isomers
Kepceoğlu, Abdullah; Ekincioğlu, Yavuz
This research paper aims to analyse the molecular properties of fluoroaniline and fluoroanisole isomers through a range of theoretical methods. These methods include optimization of molecular structures, conformational analysis, and calculation of nonlinear optics (NLO) properties, frontier molecular orbital (HOMO-1, HOMO/SOMO, LUMO, LUMO+1) energies, chemical reactivity descriptors (ionization potentials - vertical and adiabatic, electron affinity, chemical hardness, softness, and electronegativity), molecular electrostatic potential (MEP), natural bonding orbital (NBO), and UV-Vis spectra. To achieve this, the density functional theory method with B3LYP functional and 6-311++G (d, p) basis set were used for the calculations. Additionally, the research examines the vertical and adiabatic ionization energy parameters of the molecules by constructing singly charged cation radicals. The outcome of this study provides valuable insights into the molecular properties of fluoroaniline and fluoroanisole isomers, which can be useful in the production of pharmaceuticals and agrochemicals.
AtıfOpenAlex1
İncele - MakaleAçık Erişim2024Ab-initio Study of Structural, Spectroscopic and Electronic Properties of High Energy Explosive Molecules: DFT/TD-DFT Calculations
Kepceoğlu, Abdullah; Ekincioğlu, Yavuz
This research explores the ground state geometry and molecular properties of FOX-7 and nitroguanidine molecules, with a focus on their spectroscopic and electronic characteristics. Initially, the conformational space of each molecule was systematically scanned using molecular mechanic calculations and the most probable conformer structure was obtained for each molecule. Subsequently, geometry optimizations of molecules were conducted by using ab initio density functional theory (DFT) with Becke’s three-parameter hybrid-exchange functional, which combines the Lee–Yang–Parr correlation functional (B3LYP) method, and the standard 6-311++G(d,p) basis set. The theoretically determined geometrical parameters from optimized structure and experimental values available in the literature were compared, providing validation for the structural properties of both molecules. Furthermore, the stability and reactivity properties of both molecules are estimated in terms of HOMO-LUMO energies. Overall, this study contributes to a comprehensive understanding of the ground state geometry, molecular structure, and spectroscopic behavior of FOX-7 and nitroguanidine, paving the way for potential applications in various fields of science and technology.
AtıfOpenAlex1İncele - MakaleYalnız künye2022Öğrenme Amaçlı Yazma Aktivitelerinin 8. Sınıf Öğrencilerinin Periyodik Sistem Konusundaki Akademik Başarılarına Etkisi
Öztürk, Bilge; Kaymakoğlu, Hacer; Demiroğlu Çiçek, Sümeyra
Bu araştırmada 8. sınıf öğrencilerinin periyodik sistem konusundaki akademik başarılarına öğrenme amaçlı yazma aktivitelerinin etkisinin belirlenmesi ve bu aktivitelere ilişkin öğrenci görüşlerinin tespit edilmesi amaçlanmıştır. Karma araştırma yaklaşımlarından müdahaleli karma araştırma desenine göre planlanan araştırmanın çalışma grubunu Bayburt ili merkez ilçesinde bulunan bir ortaokulun iki farklı sınıfında öğrenim gören 37 sekizinci sınıf öğrencisi oluşturmaktadır. Araştırmada veri toplama aracı olarak araştırmacılar tarafından geliştirilmiş olan Ön Bilgi Testi (ÖBT), Periyodik Sistem Akademik Başarı Testi (PSABT) ve Görüşme Formu (GF) kullanılmıştır. Verilerin analizinde ÖBT ve PSABT için ilk olarak normallik analizleri yapılmış, sonrasında her iki testin veri dağılımlarının normal dağılım şartını sağlamamasına bağlı olarak, testlere non-parametrik testlerden Mann-Whitney U Testi yapılmıştır. GF’ndan elde edilen verilerin analizinde içerik analizi yöntemi kullanılmıştır. PSABT’den elde edilen verilerin analizi sonucunda öğrenme amaçlı yazma aktivitelerinden mektubun 8. sınıf öğrencilerinin periyodik sistem konusundaki akademik başarılarını arttırdığı belirlenmiştir. GF’den elde edilen verilerin analizinden öğrencilerin öğrenme amaçlı yazma aktivitelerine yönelik görüşlerinin olumlu olduğu tespit edilmiştir.
AtıfTR Dizin4İncele - MakaleAçık Erişim2022Comparison of the effects of accelerated aging with different lamps (UV-A and -B) on color and pendulum hardness properties of Russian olive wood treated with UV system varnish
Ayata, Ümit; Efe, Fatih Tuncay; Gürleyen, Levent; Çakıcıer, Nevzat; Türk, Mutlu
In this study, some surface changes were investigated in Russian olive (Elaeagnus angustifolia L.) wood with UV system parquet varnish (3 and 5 layers) applied indoors, after exposure to artificial aging environments with different lamps. UV-A 340 and UV-B 313 type lamps were used in the aging application. Experimental samples were exposed to 252 hours of aging. In addition, tests of color parameters [(red color (a*) tone, yellow color (b*) tone and lightness (L*)] and pendulum hardness values were performed on aged and unaged varnish layers. According to the results of the research, statistical analysis of variance results were obtained for all tests in both varnish types and both lamp types. After the layers of both varnish types were exposed to 252 hours of aging of both lamp types, L* and b* values decreased while a* values increased. It was determined that the total color difference results of UV-B 313 lamps in both varnish types were higher than that of UV-A 340 lamps. Pendulum hardness values gave different results against different lamps.
AtıfOpenAlex2TR Dizin1İncele - MakaleAçık Erişim2021Arum italicum Miller Bitkisinin Yenilebilir ve Yenmeyen Yumru Parçalarının LC–MS/MS ve RP–HPLC–UV Analizi ve Antioksidan Aktiviteleri
Can, Zehra; Akar, Zeynep; Demir, Çağlar; Alkan, Ozan; Akar, Bülent
Bu çalışmada, Arum italicum bitkisine ait yumrunun yenilebilir ve yenmeyen kısımlarından elde edilen metanolik ve sulu ekstraktların, fenolik içerikleri ve antioksidan aktiviteleri belirlenmiştir. Ek olarak, bitkinin bu kısımlarının antioksidan potansiyeli, fenolik kompoziyonu ile ilişkilendirilmiştir. Bitkinin antioksidan aktivitesini belirlemek için Toplam Fenolik Madde Miktarı, FRAP, CUPRAC ve radikal süpürme aktiviteyi belirleyen DPPH antioksidan aktivite testleri yapılmıştır. Bitki yumrusunun her iki kısmındaki fenolik profiller hazırlanan metanolik ekstraktlarında RP– HPLC–UV ve LC–MS/ MS cihazları kullanılarak belirlenmiştir. En yüksek toplam fenolik içerik, FRAP, CUPRAC ve % DPPH değerleri, yumrunun yenmeyen kısmının metanolik ekstraktında sırasıyla 164 µg GAE/mL, 878 TEAC(µM), 0.064 TEAC(µM) ve 19.41 olarak ölçülmüştür LC/MS-MS ölçümlerinde her iki yumru kısmının metanolik ekstraktlarında ferulik asit, ana fenolik bileşik olarak belirlendi. Bununla birlikte RP–HPLC–UV ölçümlerinde ise, bitki yumrusunun yenilebilir ve yenilmeyen kısımlarında sırasıyla luteolin ve rutin fenolikleri ana bileşikler olarak ölçülmüştür.
AtıfOpenAlex6TR Dizin4İncele - MakaleAçık Erişim2020A Study on Determination of The Fatty Acid Composition of Cucurbita pepo L. Seeds
Gıdık, Betül
In this study seed variety of Ürgüp Sivrisi pumpkin seeds collected from Çorumwas used as material for determination fatty acid composition. It is known that;The seed of the pumpkin has active ingredients that protect and cure diseases.From past the present, it has been traditionally used for some diseases such asprostate and parasites. The pumpkin seeds contain average of 42-54% fat, and fattyacid composition depends on factors such as location, climate and maturity.According to the results of this study stearic, pamitic acid and linoleic acidrespectively were found 0,46%, 0,52%, 0,05% degrees. In addition caprylic acidand palmitic acid were determinated at 0,37% and 0,52%. Butyric acid isimportant for inhibition of intestinal diseases. Reason of the many intestinaldiseases are low butyric acid concentrations, in the colon. It shows the importanceof using the pumpkin seeds in daily food habit.
- MakaleAçık Erişim2020Determination of Optimum Ethanolic Extraction Conditions and Phenolic Profiles of Thyme, Mint, Uckun, Grape Seeds and Green Tea Waste Fiber
Akpolat, Hacer; Türkhan, Ayşe; Tunçtürk, Yusuf; Bulu, Menekşe; Alwazeer, Duried
The objective of this study was to investigate the effect of different ethanol ratios inextraction solvent as well as the antioxidant properties of five plants. Thyme, mint, uckun, grapeseeds and green tea waste fiber was analyzed to determine total phenolic content (TPC) andantioxidant activity by ABTS and DPPH radical scavenging activity assays. Individual phenoliccomponents were analyzed with reverse phase high performance liquid chromatography (HPLC).TPC varied significantly from 2.00±0.27 to 172.68±0.19 mg GAE g-1 dw depending on the plant typeand ethanol ratio of the solvent. The effect of ethanol ratio also varied among different plants. HPLCanalysis was performed for the extracts showing highest antioxidant activity, and green tea wastefiber (699.89 mg 100 g-1 dw) had the highest concentration of phenolic compounds overall, whilemint (173.67 mg 100 g-1 dw) had the lowest amount. Correlations between TPC and antioxidantactivity was significant which is comparable to the previous report.
AtıfOpenAlex12TR Dizin1İncele - MakaleAçık Erişim2020Seed Fatty Acid Composition of Kalecik Karası Grape (Vitis vinifera L.) Cultivated in Çorum Province Ecological Conditions
Gıdık, Betül
It is stated that grape seed contains about 10-20% oil. Unsaturated fatty acids such as linoleic and oleic acid, especially with the high rate of antioxidants, show that grape seed oil should be processed as a by-product and its economic importance. In addition, it is used in cosmetic and pharmaceutical industry with the antioxidant substances it contains. In this study, the fatty acids composition of Kalecik Karası seed oil grown in Çorum ecology was determined by using GS-MS. Linoleic acid and linolenic acid values were found 0.91% and 0.21%, respectively. In addition the butyric acid content was determined as 50.83%. Butyric acid is one of the important fatty acids that can be used in nutrition because of its inhibitory and curative effect in intestinal diseases. It is thought that it will be possible to determine the usage areas of vegetable oils by illuminating the fatty acids content and thus the production methods can be grouped. The grape kernels, which are produced as a by-product from pressed or processed grapes used as raw materials for the first product such as fruit juice, molasses and wine, reveal the idea that grape seed oil can be used in the production of grape seed oil which has a higher economic yield in addition to pulp and feed production. The fatty acids it contains indicate that grape seed oil is suitable for use as edible oil.
- MakaleYalnız künye2019Brassica juncea, Brassica napus, Sinapis alba ve Camelina sativa’nın YAĞ İÇERİĞİ VE YAĞ ASİTLERİ KOMPOZİSYONUNUN BELİRLENMESİ
Onemli, Fadul; Gıdık, Betül
Bu çalışma Tekirdağ ili iklim koşullarında “Tesadüf Blokları Deneme Deseni” ne göre dört tekerrürlüolarak yürütülmüştür. Denemede yetiştirilen Brassica juncea, Brassica napus, Sinapis alba ve Camelinasativa türlerinin yağ oranları ve yağ asitleri kompozisyonları belirlenmiştir. En yüksek yağ oranı, arişidikasit içeriği ve oleik asit içeriği B. napus türüne ait Excalibur çeşidinde sırasıyla %42.34, %6.65 ve %62.1oranlarında belirlenmiştir. Yabani bir tür olan Brassica juncea tohumlarının %32.86 oranında yağ ve %0.94oranında miristik asit içeriğine sahip olduğu gözlemlenmiştir. En düşük yağ içeriğinin %26.46 ile S. albatohumlarında bulunduğu tespit edilmiştir. S. alba aynı zamanda %37.89 oranı ile en fazla erusik asitiçeriğine sahip tür olmuştur. Bu çalışmanın amacı, Brassicaceae familyasında yer alan kültüre alınmışBrassica napus ve Camelina sativa çeşitleri, ülkemizde köy popülasyonu olarak yetiştirilen Sinapis albatürü ve üretici tarlalarında yabancı ot olarak varlığı tespit edilen Brassica juncea türünün tarla koşullarındakültüre alınması ile elde edilen üründeki yağ içerikleri ve yağ asitleri kompozisyonlarını belirlemek vetürlerin aralarındaki farklılıklar ile benzerlikleri ortaya koymaktır. Ayrıca bu çalışmada ülkemiz doğalflorasında da belirlenen ve çok özel iklim istekleri olamayan Brassica juncea’nın yağlı tohum potansiyelide belirlemiştir.
AtıfTR Dizin2İncele - MakaleAçık Erişim2018Purıfıcatıon of protease enzyme from çiğdem (crocus bıflorus) tubers and ınvestıgatıon of usabılıty of the purıfıed protease enzyme ın coagulatıon of caseın
Yıldırım Çelik, Safinur
It is known that in some diseases (SARS, mad cow, pig and bird flu) that have passed from animals to humans have increased in recent years. In consumers, the use of animal proteases in the production of food products leads to concerns about the spread of these diseases. For these reasons, it has been an increase in demand for the product obtained from plant sources. The fact that only a small proportion of commercially available enzymes are herbaceous, have encouraged researchers to search for new herbal protease sources that can be used commercially. In this study, for the first time protease enzyme was purified from the tubers of a Crocus biflorus and characterized. The protease enzyme was purified 86 fold by ammonium sulfate precipitation and ion exchange chromatography. Optimum pH and temperature was found as 5.5 and 50 °C. The values of Vmax and KM were calculated as 47 mg/mL.min and 0.9 g/L, respectively. The molecular weight of the enzyme was calculated to be 35 kDa by using SDS-PAGE. It was determined that the purified enzyme can be used in the process of casein coagulation, the first step of cheese making.
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