Subjects -> ENGINEERING (Total: 2688 journals)
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CHEMICAL ENGINEERING (229 journals)                  1 2 | Last

Showing 1 - 200 of 234 Journals sorted alphabetically
ACS Applied Nano Materials     Hybrid Journal   (Followers: 9)
ACS Applied Polymer Materials     Hybrid Journal   (Followers: 8)
ACS Engineering Au     Open Access   (Followers: 6)
ACS Environmental Au     Open Access   (Followers: 8)
ACS ES&T Engineering     Hybrid Journal   (Followers: 1)
ACS ES&T Water     Hybrid Journal  
ACS Sustainable Chemistry & Engineering     Hybrid Journal   (Followers: 10)
Acta Chemica Malaysia     Open Access  
Acta Crystallographica Section B: Structural Science, Crystal Engineering and Materials     Hybrid Journal   (Followers: 6)
Acta Polymerica     Hybrid Journal   (Followers: 9)
Additives for Polymers     Full-text available via subscription   (Followers: 20)
Adhesion Adhesives & Sealants     Hybrid Journal   (Followers: 10)
Advanced Chemical Engineering Research     Open Access   (Followers: 52)
Advanced Membranes     Open Access   (Followers: 3)
Advanced Powder Technology     Hybrid Journal   (Followers: 15)
Advances in Applied Ceramics     Hybrid Journal   (Followers: 4)
Advances in Chemical Engineering     Full-text available via subscription   (Followers: 24)
Advances in Chemical Engineering and Science     Open Access   (Followers: 109)
Advances in Polymer Technology     Open Access   (Followers: 14)
Aerosol Science and Engineering     Hybrid Journal  
Aerosol Science and Technology     Hybrid Journal   (Followers: 13)
African Journal of Pure and Applied Chemistry     Open Access   (Followers: 6)
All Life     Open Access  
American Journal of Polymer Science & Engineering     Open Access   (Followers: 2)
Annual Review of Analytical Chemistry     Full-text available via subscription   (Followers: 12)
Annual Review of Chemical and Biomolecular Engineering     Full-text available via subscription   (Followers: 12)
Anti-Corrosion Methods and Materials     Hybrid Journal   (Followers: 11)
Applied Petrochemical Research     Open Access   (Followers: 2)
ASEAN Journal of Chemical Engineering     Open Access  
Asia-Pacific Journal of Chemical Engineering     Hybrid Journal   (Followers: 6)
Asian Journal of Applied Chemistry Research     Open Access   (Followers: 1)
Biochemical Engineering Journal     Hybrid Journal   (Followers: 13)
Biofuel Research Journal     Open Access   (Followers: 1)
Biomass Conversion and Biorefinery     Partially Free   (Followers: 10)
Bulletin of Chemical Reaction Engineering & Catalysis     Open Access   (Followers: 3)
Bulletin of Institute of Chemistry and Chemical Technology, Mongolian Academy of Sciences     Open Access  
Bulletin of the Chemical Society of Ethiopia     Open Access   (Followers: 1)
C&EN Global Enterprise     Full-text available via subscription  
Carbohydrate Polymers     Hybrid Journal   (Followers: 9)
Carbon Capture Science & Technology     Open Access  
Case Studies in Chemical and Environmental Engineering     Open Access  
Catalysts     Open Access   (Followers: 11)
Chem Catalysis     Hybrid Journal  
ChemBioEng Reviews     Full-text available via subscription   (Followers: 3)
ChemEngineering     Open Access  
Chemical and Engineering News     Free   (Followers: 22)
Chemical and Materials Engineering     Open Access   (Followers: 54)
Chemical and Petroleum Engineering     Hybrid Journal   (Followers: 8)
Chemical and Process Engineering     Open Access   (Followers: 67)
Chemical and Process Engineering Research     Open Access   (Followers: 64)
Chemical Engineer, The     Partially Free  
Chemical Engineering & Technology     Hybrid Journal   (Followers: 28)
Chemical Engineering and Processing: Process Intensification     Hybrid Journal   (Followers: 15)
Chemical Engineering and Science     Open Access   (Followers: 58)
Chemical Engineering Communications     Hybrid Journal   (Followers: 14)
Chemical Engineering Education     Full-text available via subscription   (Followers: 2)
Chemical Engineering Journal     Hybrid Journal   (Followers: 71)
Chemical Engineering Journal Advances     Open Access   (Followers: 1)
Chemical Engineering Research and Design     Hybrid Journal   (Followers: 26)
Chemical Engineering Research Bulletin     Open Access   (Followers: 44)
Chemical Engineering Science     Hybrid Journal   (Followers: 28)
Chemical Geology     Hybrid Journal   (Followers: 31)
Chemical Papers     Hybrid Journal   (Followers: 4)
Chemical Reviews     Hybrid Journal   (Followers: 168)
Chemical Science International Journal     Open Access  
Chemical Society Reviews     Hybrid Journal   (Followers: 44)
Chemical Technology     Open Access   (Followers: 75)
ChemInform     Hybrid Journal   (Followers: 5)
Chemistry & Industry     Full-text available via subscription   (Followers: 6)
Chemistry Africa : A Journal of the Tunisian Chemical Society     Hybrid Journal  
Chemistry Central Journal     Open Access   (Followers: 4)
Chemistry of Materials     Hybrid Journal   (Followers: 161)
Chemometrics and Intelligent Laboratory Systems     Hybrid Journal   (Followers: 13)
Chempublish Journal     Open Access  
ChemSusChem     Hybrid Journal   (Followers: 7)
Chinese Chemical Letters     Full-text available via subscription   (Followers: 2)
Chinese Journal of Chemical Engineering     Full-text available via subscription   (Followers: 3)
Chinese Journal of Chemical Physics     Hybrid Journal   (Followers: 1)
Cleaner Chemical Engineering     Open Access   (Followers: 2)
Coke and Chemistry     Hybrid Journal   (Followers: 1)
Coloration Technology     Hybrid Journal  
Computational Biology and Chemistry     Hybrid Journal   (Followers: 13)
Computers & Chemical Engineering     Hybrid Journal   (Followers: 12)
CORROSION     Full-text available via subscription   (Followers: 20)
Corrosion Engineering, Science and Technology     Hybrid Journal   (Followers: 35)
Crystal Research and Technology     Hybrid Journal   (Followers: 7)
Current Opinion in Chemical Engineering     Open Access   (Followers: 5)
Current Research in Food Science     Open Access  
Designed Monomers and Polymers     Open Access   (Followers: 1)
Digital Chemical Engineering     Open Access  
Discover Chemical Engineering     Open Access  
Education for Chemical Engineers     Hybrid Journal   (Followers: 5)
Eksergi     Open Access  
Emerging Trends in Chemical Engineering     Full-text available via subscription   (Followers: 3)
EnergyChem     Hybrid Journal   (Followers: 1)
Equilibrium : Journal of Chemical Engineering     Open Access  
Eurasian Chemico-Technological Journal     Open Access  
European Polymer Journal     Hybrid Journal   (Followers: 42)
Fibers and Polymers     Full-text available via subscription   (Followers: 4)
Focusing on Modern Food Industry     Open Access   (Followers: 2)
Food and Environment Safety     Open Access   (Followers: 3)
Food Chemistry     Hybrid Journal   (Followers: 18)
Food Chemistry : Molecular Sciences     Open Access   (Followers: 1)
Food Chemistry : X     Open Access   (Followers: 1)
Food Frontiers     Open Access   (Followers: 1)
Frontiers in Chemical Engineering     Open Access  
Frontiers in Sensors     Open Access   (Followers: 6)
Frontiers in Sustainable Food Systems     Open Access   (Followers: 2)
Frontiers of Chemical Science and Engineering     Hybrid Journal   (Followers: 5)
Gases     Open Access   (Followers: 1)
Gels     Open Access  
Geochemistry International     Hybrid Journal   (Followers: 1)
Graphene Technology     Hybrid Journal  
Green Chemical Engineering     Open Access  
High Performance Polymers     Hybrid Journal   (Followers: 1)
Indian Chemical Engineer     Hybrid Journal   (Followers: 4)
Indian Journal of Chemical Technology (IJCT)     Open Access   (Followers: 9)
Indonesian Journal of Chemical Science     Open Access  
Industrial & Engineering Chemistry     Full-text available via subscription   (Followers: 10)
Industrial & Engineering Chemistry Research     Hybrid Journal   (Followers: 20)
Industrial Gases     Open Access  
Info Chimie Magazine     Full-text available via subscription   (Followers: 1)
International Journal of Ceramic Engineering & Science     Open Access  
International Journal of Chemical Engineering     Open Access   (Followers: 7)
International Journal of Chemical Technology     Open Access   (Followers: 7)
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 Food Science     Open Access   (Followers: 3)
International Journal of Industrial Chemistry     Open Access  
International Journal of Innovative Research and Scientific Studies     Open Access   (Followers: 1)
International Journal of Polymeric Materials     Hybrid Journal   (Followers: 6)
International Journal of Waste Resources     Open Access   (Followers: 5)
International Research Journal of Pure and Applied Chemistry     Open Access  
Iranian Journal of Chemistry and Chemical Engineering (IJCCE)     Open Access   (Followers: 1)
Iranian Journal of Polymer Science and Technology     Open Access   (Followers: 1)
Journal of Advanced Manufacturing and Processing     Hybrid Journal  
Journal of Aerosol Science     Hybrid Journal   (Followers: 7)
Journal of Applied Crystallography     Hybrid Journal   (Followers: 7)
Journal of Applied Electrochemistry     Hybrid Journal   (Followers: 12)
Journal of Applied Polymer Science     Hybrid Journal   (Followers: 107)
Journal of Applied Science & Process Engineering     Open Access  
Journal of Biomaterials Science, Polymer Edition     Hybrid Journal   (Followers: 9)
Journal of Biopharmaceutics Sciences     Open Access   (Followers: 3)
Journal of Chemical & Engineering Data     Hybrid Journal   (Followers: 10)
Journal of Chemical and Petroleum Engineering     Open Access   (Followers: 1)
Journal of Chemical Ecology     Hybrid Journal   (Followers: 4)
Journal of Chemical Engineering     Open Access   (Followers: 63)
Journal of Chemical Engineering and Materials Science     Open Access   (Followers: 5)
Journal of Chemical Sciences     Partially Free   (Followers: 22)
Journal of Chemical Technology & Biotechnology     Hybrid Journal   (Followers: 11)
Journal of Chemical Theory and Computation     Hybrid Journal   (Followers: 21)
Journal of CO2 Utilization     Hybrid Journal   (Followers: 1)
Journal of Coating Science and Technology     Hybrid Journal  
Journal of Coatings     Open Access   (Followers: 3)
Journal of Engineered Fibers and Fabrics     Open Access  
Journal of Engineering & Processing Management     Open Access  
Journal of Environmental Chemical Engineering     Hybrid Journal   (Followers: 5)
Journal of Food Chemistry & Nanotechnology     Open Access   (Followers: 1)
Journal of Food Measurement and Characterization     Hybrid Journal  
Journal of Food Processing & Technology     Open Access   (Followers: 1)
Journal of Fuel Chemistry and Technology     Full-text available via subscription   (Followers: 1)
Journal of Geochemical Exploration     Hybrid Journal   (Followers: 4)
Journal of Industrial and Engineering Chemistry     Hybrid Journal   (Followers: 2)
Journal of Information Display     Open Access   (Followers: 1)
Journal of Inorganic and Organometallic Polymers and Materials     Hybrid Journal   (Followers: 8)
Journal of Leather Science and Engineering     Open Access  
Journal of Materials Science and Chemical Engineering     Open Access   (Followers: 1)
Journal of Modern Chemistry & Chemical Technology     Open Access   (Followers: 2)
Journal of Non-Crystalline Solids     Hybrid Journal   (Followers: 7)
Journal of Non-Crystalline Solids : X     Open Access  
Journal of Organic Semiconductors     Open Access   (Followers: 6)
Journal of Physics and Chemistry of Solids     Hybrid Journal   (Followers: 3)
Journal of Polymer and Biopolymer Physics Chemistry     Open Access   (Followers: 7)
Journal of Polymer Research     Hybrid Journal   (Followers: 7)
Journal of Polymer Science Part C : Polymer Letters     Hybrid Journal   (Followers: 5)
Journal of Polymers     Open Access   (Followers: 7)
Journal of Polymers and the Environment     Hybrid Journal   (Followers: 1)
Journal of Powder Technology     Open Access   (Followers: 4)
Journal of Pure and Applied Chemistry Research     Open Access   (Followers: 3)
Journal of the American Chemical Society     Hybrid Journal   (Followers: 321)
Journal of The Institution of Engineers (India) : Series E     Hybrid Journal   (Followers: 2)
Journal of the Taiwan Institute of Chemical Engineers     Hybrid Journal   (Followers: 1)
Journal of the Turkish Chemical Society, Section B : Chemical Engineering     Open Access  
Journal of Water Chemistry and Technology     Hybrid Journal   (Followers: 8)
Journal on Today's Ideas - Tomorrow's Technologies     Open Access   (Followers: 1)
JSFA reports     Full-text available via subscription  
Jurnal Bahan Alam Terbarukan     Open Access  
Jurnal Inovasi Pendidikan Kimia     Open Access  
Jurnal Rekayasa Kimia & Lingkungan     Open Access  
Jurnal Teknologi Dan Industri Pangan     Open Access  
Korean Journal of Chemical Engineering     Hybrid Journal   (Followers: 5)
Kvasný Průmysl     Open Access  
Materials Advances     Open Access   (Followers: 2)
Materials Chemistry and Physics     Full-text available via subscription   (Followers: 15)
Materials Science for Energy Technologies     Open Access  
Materials Sciences and Applied Chemistry     Full-text available via subscription  
Modern Chemistry & Applications     Open Access   (Followers: 1)
Molecular Catalysis     Hybrid Journal   (Followers: 6)
Nanochemistry Research     Open Access   (Followers: 1)
Natural Volatiles & Essential Oils     Open Access  

        1 2 | Last

Similar Journals
Journal Cover
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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