Güncel Gönderiler: Fen Edebiyat Fakültesi
Toplam kayıt 1548, listelenen: 21-40
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Türkiye Florası'na Katkı: Tragopogon porrifolius subsp. eriospermus (Asteraceae; Cichorieae)
(Ali Nihat Gökyiğit Eğitim ve Sağlık Kültür Sanat ve Doğal Varlıkları Koruma Vakfı, 2023)Tragopogon porrifolius L., Türkiye'den İspanya'ya kadar tüm Akdeniz havzasında doğal olarak yayılış gösteren, bazı üyeleri süs ve yenilebilir bitki olarak yetiştirilen dört taksondan oluşan karmaşık bir tür grubudur. “Flora ... -
1703-1704 Gürcistan-Abaza seferi ve seferin maliyeti
(İstanbul Üniversitesi Türkiyat Araştırmaları Enstitüsü, 2023)Gürcistan coğrafyası sarp dağlara, ormanlık ve derin vadilere sahip, sel baskınlarının sıklıkla yaşandığı bir yerdi. Bu doğal yapının etkisi ile bölgeye yapılan seferler, ordular için ciddi zorluklarla karşı karşıya ... -
The presence of microplastics in Baran’s newt (Neurergus barani Öz, 1994) and the spotted newt (Neurergus strauchii Steindachner, 1887)
(Springer, 2024)Microplastics (MPs), tiny plastic particles less than 5 mm in size, have emerged as a common and worrying pollutant in marine, freshwater, and terrestrial environments worldwide. In this study, we revealed the microplastic ... -
Extension of TODIM method based on distance measures of decomposed fuzzy sets
(Springer, 2024)Fuzzy sets allow elements to have partial membership in a set, represented by a membership value between 0 and 1. This feature enables fuzzy sets to model imprecise or vague concepts. Decomposed fuzzy sets, an extension ... -
Fine-tuning the element dose in nanoparticle synthesis is the critical factor determining nanoparticle's impact on plant growth
(Elsevier, 2024)This study elucidates the impact of element dose during nanoparticle (NPs) synthesis on plant growth indices. Novel NPs containing two essential micro-nutrients, zinc (Zn) and manganese (Mn), were co-doped on cerium oxide ... -
Utilizing fractional derivatives and sensitivity analysis in a random framework: a model-based approach to the investigation of random dynamics of malware spread
(Springer, 2024)In this study, an ordinary-deterministic equation system modeling the spread dynamics of malware under mutation is analyzed with fractional derivatives and random variables. The original model is transformed into a system ... -
Four new sequence spaces obtained from the domain of quadruple band matrix operator
(Association of Mathematicians (MATDER), 2024)In this work, we construct the new sequence spaces c0 (Q), c(Q), ℓ∞ (Q) and ℓp (Q) derived by the domain of quadruple band matrix, which generalizes the matrices ∆3, B(r, s, t), ∆2, B(r, s), ∆, where ∆3, B(r, s, t), ∆2, ... -
Synthesis of novel quinazolinone-triheterocyclic hybrides as dual inhibition of urease and ache
(Springer, 2024)New triheteroyclic compounds containing quinazolinone, thiophene, andthiadiazole /thiazolidinone structureswere synthesized and characterized by FT-IR, 1H–NMR, and13C–NMRspectral data. The new compounds’ inhibitory activities ... -
Prevalence and phylogenetic network analysis of nosema apis and nosema ceranae isolates from honeybee colonies in Türkiye
(Springer, 2024)Purpose: Nosemosis is a disease that infects both Western honeybees (Apis mellifera L.) and Asian honeybees (Apis cerana) and causes colony losses and low productivity worldwide. In order to control nosemosis, it is important ... -
An inhibition potential on some metabolic enzymes (urease and xanthine oxidase), essential oil contents and antioxidant effect of Sideritis lanata L.
(Springer, 2024)While people use the aerial parts of some Sideritis species as tea and sweetener, some species are used for medicinal purposes. In this study, anti-urease, anti-xanthine oxidase, and antioxidant activity of Sideritis lanata ... -
New metallophthalocyanine (M: Ni(II) and Fe(II)) complexes as efficient catalysts for transfer hydrogenation of various ketones
(Elsevier, 2024)Hydrogen transfer reduction methods are attracting increasing attention from synthetic chemists in view of their operational simplicity. Therefore, the novel Ni(II) and Fe(II) tetra substituted metallophthalocyanines ... -
A data-driven bayes approach for investigating international safety management code-sourced detention of ships in port state controls
(Elsevier, 2024)For port authorities and shipping firms to enhance vessel quality and ensure safety of maritime, Port State Control (PSC) inspections are crucial. Notwithstanding the tremendous efforts made in recent years to improve PSC, ... -
Microplastics in honey from Türkiye: Occurrence, characteristic, human exposure, and risk assessment
(Elsevier, 2024)In this study, honey samples produced in Türkiye in 2023 were analyzed to assess occurrence of microplastics. The microplastics were physically and chemically characterised by stereomicroscope and FT-IR, respectively. ... -
Microplastic accumulation in a lizard species: Observations from the terrestrial environments
(Elsevier, 2024)Microplastics are a global environmental problem, polluting both aquatic and terrestrial environments. Terrestrial lizards are suitable model organisms to study human-induced pollution in these areas, as they can live in ... -
Misâk-ı Millî’nin kabulünden önce Osmanlı barışına i̇lişkin olarak dönemin basınında öne çıkan bazı yaklaşımlar
(Hacettepe University, 2024)Misak-ı Millî (The National Pact) is the declaration adopted by the last Ottoman Parliament on January 28, 1920, outlining the conditions for the Turks in the peace that will be made between the Allied Powers and the Ottoman ... -
Development of photovoltaic and photodetection characteristics in CdS/P3HT devices through Al-doping
(Elsevier, 2024)CdS thin films were deposited by chemical bath deposition onto FTO substrates with Al concentrations of 0, 1, 3, 5 and 6 %. X-ray diffraction revealed introduction of 1 % Al-doping reduced dislocation density and enhanced ... -
Exploring codon usage patterns and influencing factors in ranavirus DNA polymerase genes
(Wiley, 2024)Ranaviruses, members of the genus Ranavirus within the family Iridoviridae, have become a significant concern for amphibian populations globally, along with other cold-blooded vertebrates, due to their emergence as a ... -
Analysis of CeO2/SiO2 double-layer thin film stack with antireflection effect for silicon solar cells
(Springer, 2024)This study introduces CeO2/SiO2 double-layer film stacks and its antireflection coating effect. Optical properties were analyzed by spectrophotometer measurements; surface morphology and cross-sections were observed by ... -
Design, synthesis, molecular modeling, in vitro evaluation of novel piperidine-containing hydrazone derivatives as cholinesterase inhibitors
(Wiley, 2024)In an effort to develop new and effective therapeutic agents for Alzheimer's disease, a series of hydrazone derivatives bearing piperidine rings have been designed and synthesized. The chemical structures of the compounds ... -
Prevalence and molecular analysis of some important viruses in honey bee colonies in Türkiye: the status of multiple infections
(Springer, 2024)In this study, seven bee viruses of significant importance for bee health in Türkiye were investigated using one-step RT-PCR. For this purpose, larvae from 1183 hives and adult bees from 1196 hives were sampled from 400 ...
