Subjects -> CHEMISTRY (Total: 928 journals)
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    - CHEMISTRY (661 journals)
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CHEMISTRY (661 journals)            First | 1 2 3 4 | Last

Showing 201 - 400 of 735 Journals sorted alphabetically
Computational and Theoretical Chemistry     Hybrid Journal   (Followers: 11)
Computational Biology and Chemistry     Hybrid Journal   (Followers: 13)
Computational Chemistry     Open Access   (Followers: 3)
Computers & Chemical Engineering     Hybrid Journal   (Followers: 12)
Coordination Chemistry Reviews     Full-text available via subscription   (Followers: 6)
Corrosion Communications     Open Access  
Critical Reviews in Biochemistry and Molecular Biology     Hybrid Journal   (Followers: 17)
Croatica Chemica Acta     Open Access  
CrystEngComm     Hybrid Journal   (Followers: 10)
Current Catalysis     Hybrid Journal   (Followers: 2)
Current Opinion in Colloid & Interface Science     Hybrid Journal   (Followers: 8)
Current Opinion in Green and Sustainable Chemistry     Hybrid Journal  
Current Opinion in Molecular Therapeutics     Full-text available via subscription   (Followers: 8)
Current Protocols in Nucleic Acid Chemistry     Hybrid Journal  
Current Protocols in Protein Science     Hybrid Journal   (Followers: 1)
Current Research in Chemical Biology     Open Access  
Current Research in Chemistry     Open Access   (Followers: 7)
Current Research in Green and Sustainable Chemistry     Open Access  
Current Science     Open Access   (Followers: 116)
Current Topics in Medicinal Chemistry     Hybrid Journal   (Followers: 7)
Dalton Transactions     Hybrid Journal   (Followers: 23)
Detection     Open Access   (Followers: 3)
Diamond and Related Materials     Hybrid Journal   (Followers: 10)
Doklady Chemistry     Hybrid Journal  
Drying Technology: An International Journal     Hybrid Journal   (Followers: 4)
Ecological Chemistry and Engineering S     Open Access   (Followers: 2)
Educação Química en Punto de Vista     Open Access  
Educación Química     Open Access   (Followers: 1)
Education for Chemical Engineers     Hybrid Journal   (Followers: 5)
EDUSAINS     Open Access  
EJNMMI Radiopharmacy and Chemistry     Open Access  
Elements     Full-text available via subscription   (Followers: 3)
Energetic Materials Frontiers     Open Access  
EnergyChem     Hybrid Journal   (Followers: 1)
Environmental Chemistry     Hybrid Journal   (Followers: 9)
Environmental Chemistry and Ecotoxicology     Open Access  
Environmental Chemistry Letters     Hybrid Journal   (Followers: 4)
Environmental Science & Technology Letters     Hybrid Journal   (Followers: 7)
Environmental Science : Nano     Hybrid Journal   (Followers: 2)
Environmental Toxicology & Chemistry     Hybrid Journal   (Followers: 22)
Enzyme Research     Open Access   (Followers: 4)
Eurasian Chemico-Technological Journal     Open Access  
European Journal of Chemistry     Open Access   (Followers: 25)
European Journal of Histochemistry     Open Access   (Followers: 4)
European Journal of Medicinal Chemistry     Hybrid Journal   (Followers: 21)
European Journal of Medicinal Chemistry Reports     Open Access  
European Online Journal of Natural and Social Sciences     Open Access   (Followers: 4)
Faraday Discussions     Hybrid Journal   (Followers: 3)
Fine Chemical Technologies / Тонкие химические технологии     Open Access  
FirePhysChem     Open Access  
Fitoterapia     Hybrid Journal   (Followers: 4)
FlatChem : Chemistry of Flat Materials     Hybrid Journal  
Fluid Phase Equilibria     Hybrid Journal   (Followers: 4)
Folia Histochemica et Cytobiologica     Open Access  
Folia Microbiologica     Hybrid Journal   (Followers: 2)
Food Chemistry : Molecular Sciences     Open Access   (Followers: 1)
Food Digestion     Hybrid Journal   (Followers: 5)
Food Security     Open Access   (Followers: 11)
Food Structure     Hybrid Journal   (Followers: 3)
Forensic Chemistry     Hybrid Journal   (Followers: 9)
Foundations of Chemistry     Hybrid Journal   (Followers: 4)
Frontiers in Chemistry     Open Access   (Followers: 4)
Frontiers in Soil Science     Open Access  
Frontiers of Chemical Science and Engineering     Hybrid Journal   (Followers: 5)
Fullerenes, Nanotubes and Carbon Nanostructures     Hybrid Journal   (Followers: 9)
Future Medicinal Chemistry     Full-text available via subscription   (Followers: 5)
Gases     Open Access   (Followers: 1)
Gels     Open Access  
Geochemical Transactions     Open Access   (Followers: 2)
Geofluids     Open Access   (Followers: 5)
Giant     Open Access  
Graphene     Open Access   (Followers: 7)
Graphene     Full-text available via subscription   (Followers: 3)
Graphene Technology     Hybrid Journal  
Green Analytical Chemistry     Open Access   (Followers: 4)
Green and Sustainable Chemistry     Open Access   (Followers: 4)
Green Chemistry Letters and Reviews     Open Access   (Followers: 6)
Green Synthesis and Catalysis     Open Access  
GSTF Journal of Chemical Sciences (JChem)     Open Access  
Helvetica Chimica Acta     Hybrid Journal   (Followers: 32)
Heritage Science     Open Access   (Followers: 5)
Heteroatom Chemistry     Open Access   (Followers: 3)
High Energy Chemistry     Hybrid Journal  
Indian Chemical Engineer     Hybrid Journal   (Followers: 4)
Indian Journal of Chemical Technology (IJCT)     Open Access   (Followers: 9)
Indian Journal of Chemistry - Section B (IJC-B)     Open Access   (Followers: 12)
Indian Journal of Natural Products and Resources (IJNPR)     Open Access   (Followers: 1)
Indonesian Journal of Chemical Science     Open Access  
Indonesian Journal of Chemistry     Open Access   (Followers: 1)
Indonesian Journal of Pure and Applied Chemistry     Partially Free  
Industrial & Engineering Chemistry     Full-text available via subscription   (Followers: 10)
InfoMat     Open Access  
Inorganic Chemistry     Hybrid Journal   (Followers: 31)
Inorganic Chemistry Communications     Hybrid Journal   (Followers: 13)
Inorganic Materials     Hybrid Journal   (Followers: 5)
Inorganica Chimica Acta     Hybrid Journal   (Followers: 6)
Instrumentation Science & Technology     Hybrid Journal   (Followers: 7)
International Archives of Science and Technology     Open Access  
International Journal for Ion Mobility Spectrometry     Hybrid Journal   (Followers: 1)
International Journal of Adhesion and Adhesives     Hybrid Journal   (Followers: 18)
International Journal of Advanced Chemistry     Open Access   (Followers: 1)
International Journal of Agrochemistry     Full-text available via subscription  
International Journal of Analytical Mass Spectrometry and Chromatography     Open Access   (Followers: 8)
International Journal of Biological and Chemical Sciences     Open Access   (Followers: 4)
International Journal of Biological Chemistry     Open Access   (Followers: 2)
International Journal of Biological, Physical and Chemical Studies     Open Access  
International Journal of Chemical Kinetics     Hybrid Journal   (Followers: 7)
International Journal of Chemical Technology     Open Access   (Followers: 7)
International Journal of Chemistry     Open Access   (Followers: 10)
International Journal of Chemistry and Technology     Open Access   (Followers: 1)
International Journal of Chemoinformatics and Chemical Engineering     Full-text available via subscription   (Followers: 2)
International Journal of Corrosion     Open Access   (Followers: 10)
International Journal of Energetic Materials     Full-text available via subscription  
International Journal of Environmental Chemistry     Full-text available via subscription  
International Journal of Materials and Chemistry     Open Access   (Followers: 7)
International Journal of Medicinal Chemistry     Open Access   (Followers: 4)
International Journal of Minerals, Metallurgy, and Materials     Hybrid Journal   (Followers: 8)
International Journal of Molecular Sciences     Open Access   (Followers: 2)
International Journal of Nano Dimension     Open Access   (Followers: 2)
International Journal of Photoenergy     Open Access   (Followers: 3)
International Journal of Spray and Combustion Dynamics     Full-text available via subscription   (Followers: 15)
International Journal of Thermodynamics and Chemical Kinetics     Full-text available via subscription   (Followers: 2)
International Journal of Tryptophan Research     Open Access  
International Letters of Chemistry, Physics and Astronomy     Open Access   (Followers: 8)
International Research Journal of Pure and Applied Chemistry     Open Access  
Iranian Journal of Chemistry and Chemical Engineering (IJCCE)     Open Access   (Followers: 1)
Iranian Polymer Journal     Hybrid Journal   (Followers: 3)
Iraqi Journal of Pharmacy     Open Access  
Israel Journal of Chemistry     Full-text available via subscription   (Followers: 4)
IUCrData     Open Access   (Followers: 1)
JACS Au     Open Access  
JBIC Journal of Biological Inorganic Chemistry     Hybrid Journal   (Followers: 2)
JCIS Open     Open Access   (Followers: 1)
JOT Journal für Oberflächentechnik     Hybrid Journal   (Followers: 1)
JOT-International Surface Technology     Hybrid Journal   (Followers: 1)
Journal of Adhesion     Hybrid Journal   (Followers: 7)
Journal of Adhesion Science and Technology     Hybrid Journal   (Followers: 10)
Journal of Advances in Chemistry     Open Access   (Followers: 4)
Journal of Agricultural and Food Chemistry     Hybrid Journal   (Followers: 9)
Journal of Agricultural Chemistry and Environment     Open Access   (Followers: 3)
Journal of Al-Qadisiyah for Pure Science     Open Access  
Journal of Amino Acids     Open Access   (Followers: 1)
Journal of Analytical Methods in Chemistry     Open Access   (Followers: 1)
Journal of Analytical Sciences, Methods and Instrumentation     Open Access   (Followers: 4)
Journal of AOAC International     Hybrid Journal   (Followers: 4)
Journal of Applied Chemistry     Open Access   (Followers: 6)
Journal of Applied Solution Chemistry and Modeling     Hybrid Journal   (Followers: 1)
Journal of Applied Spectroscopy     Hybrid Journal   (Followers: 9)
Journal of Biomaterials and Nanobiotechnology     Open Access   (Followers: 6)
Journal of Boron     Open Access  
Journal of Carbohydrate Chemistry     Hybrid Journal   (Followers: 4)
Journal of Catalysis     Hybrid Journal   (Followers: 11)
Journal of Catalyst & Catalysis     Full-text available via subscription   (Followers: 2)
Journal of Chemical & Engineering Data     Hybrid Journal   (Followers: 10)
Journal of Chemical Education     Hybrid Journal   (Followers: 20)
Journal of Chemical Information and Modeling     Hybrid Journal   (Followers: 18)
Journal of Chemical Research     Open Access   (Followers: 6)
Journal of Chemical Reviews     Open Access  
Journal of Chemical Sciences     Partially Free   (Followers: 22)
Journal of Chemical Theory and Computation     Hybrid Journal   (Followers: 21)
Journal of Chemical Thermodynamics     Hybrid Journal   (Followers: 7)
Journal of Cheminformatics     Open Access   (Followers: 7)
Journal of Chemistry     Open Access   (Followers: 6)
Journal of Chemistry, Environmental Sciences and its Applications     Open Access   (Followers: 2)
Journal of Chemometrics     Hybrid Journal   (Followers: 9)
Journal of Chromatography A     Hybrid Journal   (Followers: 63)
Journal of Chromatography Open     Open Access   (Followers: 1)
Journal of Coating Science and Technology     Hybrid Journal  
Journal of Colloid and Interface Science     Hybrid Journal   (Followers: 17)
Journal of Computational Chemistry     Hybrid Journal   (Followers: 21)
Journal of Coordination Chemistry     Hybrid Journal   (Followers: 5)
Journal of Dispersion Science and Technology     Hybrid Journal  
Journal of Education and Science     Open Access   (Followers: 2)
Journal of Encapsulation and Adsorption Sciences     Open Access   (Followers: 1)
Journal of Energy Chemistry     Full-text available via subscription   (Followers: 3)
Journal of Flow Chemistry     Full-text available via subscription   (Followers: 2)
Journal of Fluorescence     Hybrid Journal   (Followers: 3)
Journal of Fluorine Chemistry     Hybrid Journal   (Followers: 7)
Journal of Fuel Chemistry and Technology     Full-text available via subscription   (Followers: 1)
Journal of Great Lakes Research     Hybrid Journal   (Followers: 5)
Journal of Heterocyclic Chemistry     Hybrid Journal   (Followers: 10)
Journal of Immunoassay and Immunochemistry     Hybrid Journal   (Followers: 9)
Journal of Inclusion Phenomena and Macrocyclic Chemistry     Hybrid Journal   (Followers: 1)
Journal of Inorganic Biochemistry     Hybrid Journal   (Followers: 4)
Journal of Ionic Liquids     Open Access  
Journal of Labelled Compounds and Radiopharmaceuticals     Hybrid Journal   (Followers: 4)
Journal of Macromolecular Science, Part A: Pure and Applied Chemistry     Hybrid Journal   (Followers: 1)
Journal of Mass Spectrometry     Hybrid Journal   (Followers: 41)
Journal of Materials Chemistry A : Materials for Energy and Sustainability     Hybrid Journal   (Followers: 40)
Journal of Materials Chemistry B : Materials for Biology and Medicine     Hybrid Journal   (Followers: 11)
Journal of Materials Chemistry C : Materials for Optical, Magnetic and Electronic Devices     Hybrid Journal   (Followers: 17)
Journal of Materials Physics and Chemistry     Open Access   (Followers: 7)
Journal of Materials Research     Full-text available via subscription   (Followers: 13)
Journal of Materials Science and Chemical Engineering     Open Access   (Followers: 1)
Journal of Mathematical Chemistry     Hybrid Journal   (Followers: 5)
Journal of Medicinal Chemistry     Hybrid Journal   (Followers: 135)
Journal of Membrane Science     Hybrid Journal   (Followers: 22)
Journal of Metastable and Nanocrystalline Materials     Full-text available via subscription   (Followers: 1)
Journal of Modern Chemistry & Chemical Technology     Open Access   (Followers: 2)
Journal of Molecular Graphics and Modelling     Hybrid Journal   (Followers: 1)

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International Journal of Chemistry and Technology
Number of Followers: 1  

  This is an Open Access Journal Open Access journal
ISSN (Online) 2602-277X
Published by DergiPark Homepage  [187 journals]
  • Structural and spectral properties of
           4-(4-(1-(4-Hydroxyphenyl)-1-phenylethyl)phenoxy)phthalonitrile: Analysis
           by TD-DFT method, ADME analysis and docking studies

    • Authors: Kenan ALTUN; Ümit YILDIKO, Aslıhan Aycan TANRIVERDİ, İsmail ÇAKMAK
      Abstract: Since phthalonitrile compounds have become popular lately, the focus has been on the idea that these compounds should be investigated. A unique phthalonitrile compound, 4-(4-(1-(4-hydroxyphenyl)-1-phenylethyl)phenoxy)phthalonitrile (coded as PN) was selected and molecular modeling studies were carried out on this compound to be brought to the literature. First, time-dependent density functional theory (TD-DFT) calculations (Geometry optimization, HOMO-LUMO, dipole moment calculations, MEPS maps, Mulliken atomic charges, and NBO analysis) were performed for PN. In addition, in this section, absorption, distribution, metabolism, excretion, and toxicity (ADMET) analysis for the compound belonging to the phthalonitrile group was performed and the color regions were presented separately. Finally, molecular docking studies were performed for two compounds separately with three different enzymes (AchE, BchE, α-GLY), and docking scores and receptor models were presented.
      PubDate: Fri, 31 Dec 2021 00:00:00 +030
       
  • Comparison of quality properties of the Iranian Saffron (Crocus sativus
           L.) and Saffron grown in macro and micro locations in Turkey

    • Authors: Hasan ASİL; Ersen GÖKTÜRK
      Abstract: In this study, volatile and bioactive compositions of saffron samples collected from Khorasani region in Iran Razavi and different locations in Turkey containing Hatay (Kırıkhan, Iskenderun, Hassa and Yayladağı counties), Karabük (Safranbolu county Yukarıbucak and Ovacuma villages), Ankara (Ayaş, Nallıhan and Polatlı counties), Çukurova region (Adana-Cukurova, Mersin-Tarsus and Osmaniye-Kadirli counties) and Antalya (Korkuteli county) were investigated using gas chromatography-mass spectrometry (GC-MS/FID and GC-MS/MS) for identification and quantification of volatile compounds. Ultrasound-assisted extraction method using methanol:ethyl acetate solvent mixture was used to isolate the volatile components of saffron. This study revealed that the amounts of the volatile and bioactive compounds of saffron veried between different geographical locations. The most important bioactive compounds of saffron, safranal, crocin and crocetin, were also quantitatively analyzed in all saffron samples. The highest amount of safranal and crocin were observed in Hatay yayladağı saffron with 22532.97 mg kg-1 and 647.26 mg/kg, respectively. The highest amount of crocetin was obtained with 6.73 mg/kg in Ankara Ayaş saffron. While Hatay kırıkhan saffron contained the highest fraction of fatty acid content with 23.56%, the highest fraction of bioactive components was discovered in Karabük safranbolu ovacuma saffron with 90.84%. According to the obtained outcomes, the highest qualities saffron were determined to be observed in Hatay yayladağı and Karabük safranbolu ovacuma saffron, respectively.
      PubDate: Fri, 31 Dec 2021 00:00:00 +030
       
  • The role of Lavandula sp. extract for effective inhibiting the mild steel
           corrosion in the hydrochloric acid solution

    • Authors: Demet ÖZKIR
      Abstract: The role of lavender extract in the present study is to examine the effect of inhibiting the corrosion of mild steel in the ambient conditions with its green and eco-friendly effect. It was determined the influence of inhibitor using electrochemical impedance spectroscopy (EIS) in different immersion times. From the EIS measurement results, it was observed that as the concentration of Lavandula extract in the HCl solution increased, the polarization resistance (Rp) values in the EIS diagram increased. Finally, scanning electron microscope (SEM) analysis was conducted to better clarify the surface inhibition of the electrode containing Lavandula sp. extract at the highest concentration, 0.500% (w/v), at the end of the 120 h immersion time. It has been observed that both the surface analysis and EIS findings are very compatible with each other.
      PubDate: Fri, 31 Dec 2021 00:00:00 +030
       
  • A novel nicotinoyl thiourea manganese complex: synthesis,
           characterization, and biological activity studies

    • Authors: Fatma Betül ÖZGERİŞ; Merve YILDIRIM, Arzu GÖRMEZ, Bünyamin ÖZGERİŞ
      Abstract: Bu çalışmada daha önce grubumuz tarafından sentezlenen nikotinoil tiyoüre, nikotinik asit ve 3,5-dimetoksi anilinden başlanarak sentezlenmiştir. Elde edilen ürün Mangan (II) asetat tetrahidrat ile tepkimeye sokularak 1:1 metal-ligand oranıyla nikotinoyil tiyoüre mangan kompleksi sentezlenmiştir. Sentezlenen yeni metal kompleksinin kimyasal yapısı FTIR, HRMS, XRD ve elementel analiz ile karakterize edilmiştir. Çalışmanın ikinci bölümünde sentezlenen metal kompleksin antibakteriyel ve antioksidan aktiviteleri araştırılmıştır. Elde edilen sonuçlara göre metal kompleksi herhangi bir antibakteriyel aktivite göstermemiştir. Bununla birlikte metal kompleksi DPPH, ABTS ve kuprak metotlarında standart antioksidanlara göre güçlü veya eşit potansiyelli antioksidan özellikler sergilemiştir. Bu nedenle, metal kompleksi gıdanın korunması gibi aşamalarda ve oksidatif stres ile ilişkili birçok hastalığın tedavisinde bir antioksidan ajan olarak değerlendirilebilir.
      PubDate: Fri, 31 Dec 2021 00:00:00 +030
       
  • Synthesis, spectral characterization, DFT, and molecular docking studies
           of 2 - ((2,3-Dihydrobenzo [b] [1,4] dioxin-6-yl) (1H-indol-1-yl) methyl)
           phenol compound

    • Authors: Yeliz ULAŞ
      Abstract: Synthesis of an alkylaminophenol compound used as a drug active material was carried out and the structural analysis of the compound was investigated experimentally and theoretically. For theoretical calculations, DFT / B3LYP method and 6-311 ++ G (d, p) set were used. Many properties of the compound; Spectral data, bond length, bond angle, dihedral angles, thermodynamic parameters, molecular surface, FMO analysis, nonlinear optical (NLO) properties and Natural Bond Orbital analysis were theoretically investigated. Also, a molecular docking study shows that the title compound might exhibit inhibitory activity against 2RAW protein.
      PubDate: Fri, 31 Dec 2021 00:00:00 +030
       
  • Biodegradation of chlorpyrifos by bacterial genus pseudomonas putida

    • Authors: Yakup CUCİ; Sait ÇELİK
      Abstract: Chlorpyrifos is an solid organophosphorus pesticide widely used in agriculture. It is relatively stable to hydrolysis in neutral pH and acidic aqueous solutions. Stability decreases with increasing pH. Chlorpyrifos practically insoluble in water, but highly soluble in most organic solvents such as acetone xylene and methyl bromide. It is an effective skin, stomach and respiratory insecticide and is effective against aphids, spider mites, soil bugs and house pests. It is also highly toxic bees and fish. Most pesticides are complex organic molecules and are persistent in the environment, either biota or accumulate in the environment. In pesticide-used areas, the pesticide itself or its residues are transported by rain and irrigation water and mixes into groundwater. The effects caused by the pesticide are closely related to the level of accumulation. During the studies, contamination of chlorpyrifos has been found about 24 km from the site of its application. There are many physico-chemical and biological approaches to remove organophosphorus pesticides from the ecosystem, among them most promising is biodegradation. In this study, the biodegradation potential of chlorpyrifos with P. Putida was investigated in the batch stirred reactor. In the optimum conditions, the maximum pesticide removal rate was determined as 1.51 mg/g. d. m.o.h.
      PubDate: Fri, 31 Dec 2021 00:00:00 +030
       
  • Comparison of chemical composition and nutritive values of some clover
           species

    • Authors: İbrahim ERTEKİN
      Abstract: This study was carried out to compare the chemical composition and nutritive value of some clover species, especially common in the rangelands of the Mediterranean region. For this purpose, clover species (Trifolium angustifolium, Trifolium cherleri, Trifolium hybridum, Trifolium lappaceum, Trifolium nigrescens, Trifolium pilulare, Trifolium resupinatum, Trifolium scabrum, Trifolium spumosum and Trifolium tomentosum) were collected from ten different points in Hatay Mustafa Kemal University campus pasture. To determine the chemical composition of collected clover species, crude ash (CA), crude protein (CP), neutral detergent fiber (NDF), acid detergent fiber (ADF), acid detergent lignin (ADL), hemicellulose (Hcel) and cellulose (Cel) contents were investigated. In addition, dry matter digestibility (DMD), dry matter intake (DMI), relative feed value (RFV) and net energy lactation (NEL) characteristics were calculated in order to determine the nutritional value of clovers. Differences among species in terms of all features examined were found to be statistically significant. CA, CP, NDF, ADF, ADL, Hcel and Cel contents of species varied between 5.36% and 9.85%, 18.47% and 22.05%, 30.31% and 49.80%, 21.32% and 34.28, 3.25% and 5.04, 8.99% and 15.97% and 18.07% and 30.38, respectively. It was determined that the values of DMD, DMI, RFV and NEL properties calculated for the nutritive values of these plants varied between 62.20-72.29%, 2.41-3.97%, 116.20-222.18 and 1.40-1.74%, respectively. When the results obtained from the study were evaluated collectively, it was determined that T. resupinatum and T. hybridum offered a superior nutrient content and nutritional value compared to other species.
      PubDate: Fri, 31 Dec 2021 00:00:00 +030
       
  • Production of organic light-emitting diode with fluorescence featured
           quinoline derivative

    • Authors: Mustafa DOĞAN; Ümit ERDEM, Salih ÖKTEN
      Abstract: High-priced coating devices limit producing electronic devices and circuit applications widely in laboratories. Simply In this study spin coating technique was used to create surface thin films. Also with this method, an OLED(Organic Light Emitting Diode) device was practically produced. OLED device includes mainly HTL(hole transfer layer), fluorescent layer(light-emitting layer), and an ETL(electron transfer layer). Light-emitting layers in OLED experimental studies are frequently done with commercially produced expensive fluorescence polymers. As an example, MEH-PPV (Poly[2-methoxy-5-(2’-ethyl-hexoxy)-1,4-phenylenevinylene]), Alq3 (Tris-(8-hydroxyquinolinato) aluminum) are mostly known and used fluorescent semiconductor polymers. Alternative to these fluorescent polymers, three different produced quinoline ligand products has fluorescent feature were evaluated. After comparing the fluorescence yields of the produced three complexes, it was seen that 5,7-dibromo-8-hydroxyquinoline has the highest fluorescent response from the others. OLED device production was done with a commercial MEH-PPV(commercial) fluorescent product, and produced (5,7-dibromo-8-hydroxyquinoline). Designed OLED device illumination spectrum was found in the UV(ultraviolet) region. It was concluded that this quoniline product can use as a fluorescent material to produce an OLED device.
      PubDate: Fri, 31 Dec 2021 00:00:00 +030
       
  • Variation of components in laurel (Laurus nobilis L.) fixed oil extracted
           by different methods

    • Authors: Musa TÜRKMEN; Oğuzhan KOÇER
      Abstract: In the study, it was aimed to determine the constituents of laurel fixed oil obtained from the different genotypes of laurel (Laurus nobilis L.), which is one of the natural plants of the region and which is widely found in the flora of Hatay, by traditional, cold press and soxhlet extraction methods. When the GC/MS analysis results of these obtained oils were examined, the main components of the fixed oils in the traditional method were found as capric acid (2.49%), lauric acid (1.17%), myristic acid (0.16%), palmitic acid (13.69%), stearic acid (2.39%). ), oleic acid(55.01%), linoleic acid (10.56%) and linolenic acid(0.11%). In cold press method, fixed oil components was capric acid (0.24%), lauric acid(9.24%), myristic acid(0.98%), palmitic acid (18.41%), stearic acid (2.84%), oleic acid (38.59%), linoleic acid (23.67%) and linolenic acid (2.19%), while it was determined as capric acid (0.46%), lauric acid (11.16%), myristic acid (1.54%), palmitic acid (18.39%), stearic acid (3.58%), oleic acid (36.92%), linoleic acid (23.02%) and linolenic acid (2.54%) in soxhlet extraction method. As a result, while the components of laurel fixed oil did not change according to the fixed oil extraction methods, the amounts of these components changed. Therefore, it was determined that the method of oil extraction in laurel was important.
      PubDate: Fri, 31 Dec 2021 00:00:00 +030
       
  • Resorcinol derivatives as human acetylcholinesterase inhibitor: An In
           Vitro and In Silico study

    • Authors: Uğur GÜLLER
      Abstract: Inhibitors of Acetylcholinesterase (Acetylcholine acetylhydrolase, AChE, E.C.3.1.1.7) are highly significant in the treatment of neurodegenerative diseases such as Alzheimer’s disease (AD) due to the deep relationship with memory and acetylcholine. So investigation of natural AChE inhibitors having minimal side effects has become important. In this paper human erythrocytes AChE enzyme (0.032 EU mg-1 protein) was partially isolated by using DE-52 anion exchange chromatography. Then, primer effects of resorcinol derivatives on the enzyme activity were studied and IC50 values were found in the range of 2.74-363.61 µM. Besides, inhibition profiles were elucidated by molecular docking and the highest inhibition potency was observed in 4-hexylresorcinol with the free binding energy of -6.16 kcal mol-1. In conclusion, by using both in vitro and in silico approaches it was found that 4-hexylresorcinol had the highest inhibitory potential on human AChE. So, this compound may be used in drug design in memory-lost diseases.
      PubDate: Fri, 31 Dec 2021 00:00:00 +030
       
  • Antioxidant activity of silver nanoparticles synthesized from Tagetes
           erecta L. leaves

    • Authors: Ramazan ERENLER; Esma Nur GEÇER, Nusret GENÇ, Dürdane YANAR
      Abstract: Tagetes erecta yaprakları yaklaşık 55°C de 2 saat ısıtıldı ve daha sonra filtre edildi. Ham özüt elde etmek için süzülmüş çözeltinin bir miktarının çözücüsü döner buharlaştırıcı ile uzaklaştırıldı. Diğer filtre edilmiş çözelti, gümüş nitrat çözeltisi ile 60°C da 2 saat etkileştirilerek gümüş nanopartiküller (te-AgNPs) elde edildi. te-AgNPs yapısı spektroskopik yöntemlerle aydınlatıldı. te-AgNPs’ın karakteristik hidroksil titreşimi, Fourier Transform Infrared Spektroskopisi (FTIR) spektrumunda 3214 cm-1 de gözlendi. Ultraviolet-Visible (UV-Vis) spektrofotometre ile maksimim absorbsiyon 422 nm de gözlendi. Taramalı Elektron Mikroskop (SEM) spektral analizi ile de istenilen ürünün ortalama büyüklüğü 46.26 nm olarak belirlendi. X-Işını Kırımı (XRD) spektrumu, te-AgNPs’ın yüzey merkezli kübik kristal yapısında olduğunu ortaya koydu. Özüt ve te-AgNPs örneklerinin antioksidan aktivite testleri yapıldı ve te-AgNPs örneği, 23.80 (IC50, µgml-1), 4.46 (IC50, µgml-1), ve 2.79 (µmolmg-1 örnek) değerleri ile sırasıyla önemli derecede 2,2-Difenil-1-pikrilhidraliz (DPPH), 2,2’-azinobis(3-etilbenzotiazolin-6-sulfonat) (ABTS) ve İndirgeyici Antioksidan Gücü (FRAP) aktivitesi gösterdi.
      PubDate: Fri, 31 Dec 2021 00:00:00 +030
       
  • Phytochemical and GCMS analysis on the ethanol extract of Foeniculum
           Vulgare and Petroselinum crispum leaves

    • Authors: Jamaluddeen ABUBAKAR; Great EDO, Nur PASAOGLULARİ AYDİNLİK
      Abstract: The species Petroselinum crispum (Parsley) and Foeniculum vulgare (Fennel) are aromatic herbs belonging to the Apiaceae and Lamiaceae family respectively. The leaves of both plants were consecutively extracted based on separation using ethanol and subjected to phytochemical testing that revealed the presence of biologically active compounds such as flavonoids, tannins, saponins, steroids, terpenoids, alkaloids and glycosides. The GC- MS evaluation of Foeniculum vulgare revealed two bioactive compounds (1,4 Cyclohexadiene and Metronidazole) and Petroselinum crispum revealed six bioactive compounds (Cineole, I-Limonene, Cyclohexane, Phenol, Neophytadiene and 9,12,15 octadecatrienoic). In the FTIR analysis, the Petroselinum crispum displayed strong bands at 2915.50 cm-1 which corresponds to C–H stretching and medium band at 1476.80 cm–1 which corresponds to N-H stretching vibrations due to the presence of amino acids. The Foeniculum Vulgare displayed strong bands at 2832.61 cm-1 which corresponds to C–H present in alkenes and alkanes respectively, and medium band at 1029.98 cm-1 corresponds to C–O present in esters.
      PubDate: Fri, 31 Dec 2021 00:00:00 +030
       
  • Evaluation of zero waste management system and Adana metropolitan
           municipality zero waste implementation

    • Authors: Bülent SARI; Hatice Şebnem KÜPELİ, Hakan GÜNEY, Olcayto KESKİNKAN
      Abstract: In this study, policies and regulations about the operation of the system in the world and in Turkey regarding the necessity of transitioning to the Zero Waste Management System as a waste management system were examined and a literature review was made about the studies on this subject. In line with the information obtained, the implementation of the system in the administrative service units of Adana Metropolitan Municipality was evaluated. For this purpose, the amounts of recyclable wastes and non-recyclable wastes collected separately in the service buildings, taking into account the 12-month period, were determined. In this process, a total of 137992 kg of waste was collected. 119009 kg of these wastes were included in the urban waste collection system and sent to the integrated solid waste disposal facility, while 21983 kg was delivered to licensed companies as recyclable waste. With the transition to the Zero Waste Management System, it has been determined that the amount of waste going to the integrated solid waste disposal site has decreased by 16% in a 12-month period. In addition, as a result of the statistical studies on waste data, it was determined that the recyclable wastes and the non-recyclable wastes in the 95% confidence interval showed a statistically significant difference according to the service units (p
      PubDate: Fri, 31 Dec 2021 00:00:00 +030
       
 
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