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Annealing Effect Of Gold Thin Films On The Light Output Performances Of Organic Light Emitting Diodes, Seli̇n Piravadili Mucur, Emi̇ne Teki̇n
Annealing Effect Of Gold Thin Films On The Light Output Performances Of Organic Light Emitting Diodes, Seli̇n Piravadili Mucur, Emi̇ne Teki̇n
Turkish Journal of Physics
Gold thin films (GTFs) are transferred onto a nanostructured surface and their effects on the characteristics of organic light emitting diodes (OLED) are investigated. GTF deposition is realized by the physical vapor deposition technique under high vacuum. Globose gold nanostructures are successfully generated by annealing GTFs at different temperatures. Atomic force microscopy reveals morphological changes affected by film thicknesses and annealing temperatures. In the tailored device architecture, GTFs, [poly(3,4-ethylenedioxythiophene):poly (styrenesulfonate) and poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylene vinylene are used as a hole injection layer, a hole transport layer, and an emissive layer, respectively. The performances of the fabricated OLEDs are enhanced in the presence …
Plastid Dna Variation Of The Endemic Species Oxytropis Glandulosa Turcz. (Fabaceae), Alla Kholina, Marina Kozyrenko, Elena Artyukova, Denis Sandanov, Inessa Selyutina, Daba Chimitov
Plastid Dna Variation Of The Endemic Species Oxytropis Glandulosa Turcz. (Fabaceae), Alla Kholina, Marina Kozyrenko, Elena Artyukova, Denis Sandanov, Inessa Selyutina, Daba Chimitov
Turkish Journal of Botany
Oxytropis glandulosa Turcz. (Fabaceae) is a rare perennial plant endemic to Buryatia (Russia). We sequenced three intergenic spacers (the psbA−trnH, trnL−trnF, and trnS−trnG) of chloroplast DNA (cpDNA) in specimens of four populations from two geographic regions (Barguzin and Yeravna depressions) within this species range. The levels of haplotype and nucleotide diversity varied in the range of 0.133−0.911 and 0.0002−0.0059, respectively. The highest values of these parameters are characteristic of populations located in the Barguzin depression. Variable sites detected within the intergenic spacers allowed the identification of eleven haplotypes; nine of them were found in the populations from the Barguzin depression …
Predicting The Potential Distribution Area Of Solidago Xniederederi (Asteraceae), Malgorzata Jazwa, Elzbieta Jedrzejczak, Ewelina Klichowska, Artur Pliszko
Predicting The Potential Distribution Area Of Solidago Xniederederi (Asteraceae), Malgorzata Jazwa, Elzbieta Jedrzejczak, Ewelina Klichowska, Artur Pliszko
Turkish Journal of Botany
In this study, we aimed to investigate the potential distribution area of Solidago xniederederi, a natural hybrid between North American S. canadensis and European S. virgaurea, in Central and East Europe using the MAXENT modeling approach. The final MAXENT model was constructed based on 83 occurrence records from Austria, Poland, Lithuania, and Latvia and six abiotic environmental variables. The jackknife test revealed that annual temperature range, mean temperature of wettest quarter, and minimum temperature of coldest month had the highest gain for the training and test data when used alone, whereas precipitation seasonality, precipitation of coldest quarter, and precipitation of …
Properties, Variations, Roles, And Potential Applications Of Epicuticular Wax: A Review, Priyal Sharma, Shankar Lal Kothari, Mahender Rathore, Vinod Gour
Properties, Variations, Roles, And Potential Applications Of Epicuticular Wax: A Review, Priyal Sharma, Shankar Lal Kothari, Mahender Rathore, Vinod Gour
Turkish Journal of Botany
The cuticular wax layer covers the aerial surface of plants and acts as a barrier between plants and the environment. The cuticle plays a key role in the protection of plants from pathogens, UV light, and transpiration. Variation in the wax quality and quantity is influenced by factors like the solvent used for extraction, species, ontogeny, and season. Compounds isolated from the cuticle layer have been studied by various methods and were found to play an important role from the ecological and physiological points of view. These compounds include esters, alcohols, ether, alkane, and aldehydes. Nonpolar compounds help reduce water …
Phenotypic Evaluation Of Transgenic Peas (Pisum Sativum L.) Harboring Atnhx1 Demonstrates Stable Gene Expression And Conserved Morphology In Subsequent Generations, Zahid Ali, Wajeeha Saeed, Saadia Naseem, Faheem Ahmad, Ahmed Akrem, Nighat Yasmeen, Hans Joerg Jacobsen
Phenotypic Evaluation Of Transgenic Peas (Pisum Sativum L.) Harboring Atnhx1 Demonstrates Stable Gene Expression And Conserved Morphology In Subsequent Generations, Zahid Ali, Wajeeha Saeed, Saadia Naseem, Faheem Ahmad, Ahmed Akrem, Nighat Yasmeen, Hans Joerg Jacobsen
Turkish Journal of Botany
In recent years, transgenic approaches have played a significant role in improving traits that help plants overcome abiotic stresses. Combined gene discovery and functional genomics have helped identify diversified mechanisms and gene families, which improved productivity under various abiotic stresses. We report on the genetic stability and persistent morphological features of transgenic pea (Pisum sativum L.) plants harboring the dicistronic vector construct pG0229MASnhx1/luc over five generations. In addition to salt stress tolerance, the transgenic plants showed frost tolerance compared to wild-type (WT) plants. Frost tolerance of AtNHX1 transgenic pea plants was unexpected and needs further investigation. We report morphological and …
New Additions To The Turkish Pezizales, Yasi̇n Uzun, Semi̇ha Yakar, İbrahi̇m Hali̇l Karacan, Abdullah Kaya
New Additions To The Turkish Pezizales, Yasi̇n Uzun, Semi̇ha Yakar, İbrahi̇m Hali̇l Karacan, Abdullah Kaya
Turkish Journal of Botany
Twelve members of the order Pezizales are recorded for the first time from Turkey: Ascobolus carbonarius P.Karst.; A. crenulatus P.Karst.; A. foliicola Berk. & Broome; A. immersus Pers.; Saccobolus glaber (Pers.) Lambotte; Thecotheus holmskioldii (E.C.Hansen) Eckblad (Ascobolaceae Boud. ex Sacc.); Lasiobolus cuniculi Velen. (Ascodesmidaceae J.Schröt.); Barssia hellenica Kaounas, Agnello, P.Alvarado & Slavova (Helvellaceae Fr.); Marcelleina atroviolacea Brumm.; M. rickii (Rehm) Graddon (Pezizaceae Dumort.); Cheilymenia pulcherrima (P.Crouan & H.Crouan) Boud.; and Sepultariella semi-immersa (P.Karst.) Van Vooren, U.Lindem. & Healy (Pyronemataceae Corda). Three of them, S. glaber (Pers.) Lambotte; B. hellenica Kaounas, Agnello, P.Alvarado & Slavova; and S. semi-immersa (P.Karst.) Svrcek, are …
Host-Driven Morphological Variability In Orobanche Crenata (Orobanchaceae), Gianniantonio Domina
Host-Driven Morphological Variability In Orobanche Crenata (Orobanchaceae), Gianniantonio Domina
Turkish Journal of Botany
Studies on interactions between Orobanche species and their hosts are mainly focused on resistance, radical interactions, and haustorium development. The influence of the host plant on morphology of the parasite under environmental controlled conditions is not reported in the literature. With the aim of filling this gap, the results of cultivation experiments of Orobanche crenata on Vicia faba, V. sativa, Pisum sativum, Cicer arietinum, and Lathyrus clymenum are presented. The tested population of O. crenata infected all the studied hosts but showed preferences toward Vicia and Pisum and, in particular, toward a foreign V. sativa cv. The higher resistance of …
Ekimia Ozcan-Secmenii (Apiaceae), A New Species From Southwest Anatolia, Turkey, Serdar Gökhan Şenol, Volkan Eroğlu, Nazli Bahar Peli̇t, Duygu Bozyel
Ekimia Ozcan-Secmenii (Apiaceae), A New Species From Southwest Anatolia, Turkey, Serdar Gökhan Şenol, Volkan Eroğlu, Nazli Bahar Peli̇t, Duygu Bozyel
Turkish Journal of Botany
Ekimia ozcan-secmenii Şenol & Eroğlu sp. nov. (Apiaceae) is described from SW Turkey. E. ozcan-secmenii differs from its close affinity, E. bornmuelleri, by life form (monocarpic), petal and bracteole morphology, and mericarp features. These data were more supported by the results of nrDNA ITS sequences. The ML tree depicted based on phylogenetic studies aimed to reveal the closeness of the Laserpitium and Prangos species as well as the location the affinity of species in the genus Ekimia. The taxonomic situation of Prangos hulusi was also evaluated based on nrDNA ITS sequences. Since E. ozcan-secmenii is distributed in Sami Soydam Sandalcık …
The Epilithic And Epipelic Diatom Flora Of The Balikhli River, Northwest Iran, Jamileh Panahy Mirzahasanlou, Taher Nejadsattari, Zohreh Ramezanpour, Javid Imanpour Namin, Younes Asri
The Epilithic And Epipelic Diatom Flora Of The Balikhli River, Northwest Iran, Jamileh Panahy Mirzahasanlou, Taher Nejadsattari, Zohreh Ramezanpour, Javid Imanpour Namin, Younes Asri
Turkish Journal of Botany
The taxonomic composition of diatom flora of the Balikhli River (Balikhli Chay), Northwest Iran, was studied from October 2013 through September 2014. In total 109 taxa belonging to 50 genera were identified. Nitzschia (18 spp.), Navicula (9 spp.), and Gomphonema (7 spp.) were the most abundant genera. Twenty-five diatom species were found in more than half of the samples; among them, Nitzschia inconspicua, Planothidium lanceolatum, Amphora pediculus, Navicula trivialis, Gomphonema olivaceum, Nitzschia palea, and Rhoicosphenia abbreviata were the most abundant taxa, which are characteristic for alkaline and eutrophic waters. The centric diatoms constituted only 4.54% of all identified taxa. In …
Seed Structure Of Some Taxa Of The Genus Crocus L. (Iridaceae) Series Crocus, Mehmet Cengi̇z Karai̇smai̇loğlu, Levent Şik, Almila Gemi̇ci̇oğlu, Osman Erol
Seed Structure Of Some Taxa Of The Genus Crocus L. (Iridaceae) Series Crocus, Mehmet Cengi̇z Karai̇smai̇loğlu, Levent Şik, Almila Gemi̇ci̇oğlu, Osman Erol
Turkish Journal of Botany
In this study, the macro- and micromorphological seed characteristics of the genus Crocus L. series Crocus taxa, including C. pallasii , C. turcicus , C. dispathaceus , C. asumaniae , C. mathewii , C. thomasii , C. oreocreticus , and C. cartwrightianus , were observed. Morphological characteristics, such as the size, shape, color, and seed surface structures, were analyzed using stereo and scanning electron microscopes. Testa layer structures including the outer and inner testae, phytomelan layer structure and thickness, and seed endosperm cell features were studied. Differences in the seed, raphe size, seed surface patterns, inner testa features, and phytomelan …
Notes On The Genus Frondaria (Orchidaceae) With Description Of New Species, Dariusz Szlachetko, Marta Kolanowska, Max Rykaczewski
Notes On The Genus Frondaria (Orchidaceae) With Description Of New Species, Dariusz Szlachetko, Marta Kolanowska, Max Rykaczewski
Turkish Journal of Botany
The specific diversity of Neotropical orchid genus Frondaria is evaluated based on morphological data. Frondaria was considered a monospecific taxon for years; however, our recent studies on Andean orchids indicated that it is actually much more variable. Within Colombian material, we found a species which does not fit the morphological description of F. caulescens and described it here as a new species named F. colombiana . The novelty is characterized by inflorescence being three times as long as the ramicaul, the tridentate leaf apex with middle tooth as long as lateral ones, papillate apices of sepals, and oblong-ligulate lip middle …
Takayasu Arteritis: An Update, Gökhan Keser, Kenan Aksu, Rafi̇ Haner Di̇reskeneli̇
Takayasu Arteritis: An Update, Gökhan Keser, Kenan Aksu, Rafi̇ Haner Di̇reskeneli̇
Turkish Journal of Medical Sciences
Takayasu arteritis (TAK) is a challenging chronic, granulomatous, large-vessel systemic vasculitis, mostly due to difficulties in early diagnosis and assessing actual disease activity. Since there are no specific diagnostic laboratory tests, biomarkers, or autoantibodies, many patients experience considerable delay in diagnosis. Remembering the possibility of TAK together with the use of acute phase responses and appropriate imaging studies may be helpful for early diagnosis. Since there may be discrepancies between systemic and vascular wall inflammation, using only acute phase responses is not reliable in assessing current disease activity. Therefore, physical examination and new imaging findings should also be used to …
Immunohistochemical Localization Of Podoplanin In The Placentas Of Hiv-Positivepreeclamptic Women, Onankoy Onyangunga, Jagidesda Moodley, Frederick Odun-Ayo, Thajasvarie Naicker
Immunohistochemical Localization Of Podoplanin In The Placentas Of Hiv-Positivepreeclamptic Women, Onankoy Onyangunga, Jagidesda Moodley, Frederick Odun-Ayo, Thajasvarie Naicker
Turkish Journal of Medical Sciences
Background/aim: Impaired lymphatic function is associated with pathological conditions. The presence of placental lymphatics is still under debate. This study evaluates the placental podoplanin expression in normotensive and preeclamptic women with and without HIV. Materials and methods: Normotensive (n = 60) and preeclamptic (n = 120) pregnant women were stratified into early and late onset preeclampsia and further divided by HIV status. Immunostaining was performed using the podoplanin antibody prior to the morphometric image analysis. Results: Podoplanin was immunolocalized in a reticular-like stroma complex within the exchange and conducting villi. The immunoexpression of podoplanin was significantly upregulated in the exchange …
Clinicopathological Characteristics And Mutation Profile Of Braf And Nras Mutation Incutaneous Melanomas In The Western Turkish Population, Mustafa Kürşat Evrenos, Peyker Temi̇z, Fethi̇ Sirri Çam, Murat Yaman, Levent Yoleri̇, Ayli̇n Türel Ermertcan
Clinicopathological Characteristics And Mutation Profile Of Braf And Nras Mutation Incutaneous Melanomas In The Western Turkish Population, Mustafa Kürşat Evrenos, Peyker Temi̇z, Fethi̇ Sirri Çam, Murat Yaman, Levent Yoleri̇, Ayli̇n Türel Ermertcan
Turkish Journal of Medical Sciences
Background/aim: Malignant melanoma is the most common cause of death due to skin cancers. The most common mutations in RAFRAS pathway from tumor oncogenes are BRAF and NRAS. In this study, we analyzed the frequency of BRAF and NRAS gene mutations and investigated their association with clinicopathological features of melanomas in the Turkish population. Materials and methods: 65 primary cutaneous melanoma were included in the study. The mutations were evaluated with real-time PCRbased PCR-array through allele-specific amplification, and the results were correlated with various clinicopathological characteristics. Results: 52.3% of the patients were female and 47.7% were male. The mean age …
Determining The Effect Of Long-Term Dexamethasone And Prednisolone Treatment Onsugammadex, Ebru Bi̇ri̇ci̇k, Ersel Güleç, Işil Öcal, Mehmet Bertan Yilmaz, Feri̇de Karacaer, Di̇lek Özcengi̇z
Determining The Effect Of Long-Term Dexamethasone And Prednisolone Treatment Onsugammadex, Ebru Bi̇ri̇ci̇k, Ersel Güleç, Işil Öcal, Mehmet Bertan Yilmaz, Feri̇de Karacaer, Di̇lek Özcengi̇z
Turkish Journal of Medical Sciences
Background/aim: We aimed to investigate the effect of long-term use of dexamethasone and prednisolone on the reversal effect of sugammadex. Materials and methods: TTwenty-four male Wistar albino rats were divided into three groups. Dexamethasone (600 µg/kg) was given to group D, prednisolone (10 mg/kg) was given to group P, and an equivalent volume of saline per day was administered intraperitoneally to group S for 14 days, respectively. The left hemidiaphragm with attached phrenic nerve was maintained in Krebs solution. Sugammadex (30 µmol/L) was applied while rocuronium (10 µmol/L) was present in an organ bath and a single twitch was obtained. …
Resolving The Position Of Astragalus Borysthenicus Klokov Within The Astragalus L. Species, Nataliia Karpenko, Viktoriia Martyniuk, Oksana Tyshchenko, Andrii Tarieiev, Ayten Tekpinar, Vitaliia Didenko, Igor Kostikov
Resolving The Position Of Astragalus Borysthenicus Klokov Within The Astragalus L. Species, Nataliia Karpenko, Viktoriia Martyniuk, Oksana Tyshchenko, Andrii Tarieiev, Ayten Tekpinar, Vitaliia Didenko, Igor Kostikov
Turkish Journal of Botany
The present study is focused on several species from the genus Astragalus L. with the aim to clarify the taxonomic status of Ukrainian local endemic species Astragalus borysthenicus Klokov, which is sometimes considered a synonym to A. onobrychis L. In this study, the morphological features, current taxonomy, taxonomical history, and phylogenetic analysis based on rDNA Bayesian inference, as well as comparative analysis of ITS1 and ITS2 secondary structures, were investigated. It was found that A. borysthenicus is distant from A. onobrychis according to phylogenetic analysis. Moreover, A. borysthenicus has differences from the investigated taxa in its secondary structures of ITS1 …
Adsorption Of Anionic And Cationic Dyes On Biochars, Produced By Hydrothermalcarbonization Of Waste Biomass: Effect Of Surface Functionalization And Ionicstrength, Ezgi̇ Çağlar, Yusuf Osman Donar, Ali̇ Sinağ, İbrahi̇m Bi̇roğul, Selva Bi̇lge, Kivanç Aydincak, Oleksii Pliekhov
Adsorption Of Anionic And Cationic Dyes On Biochars, Produced By Hydrothermalcarbonization Of Waste Biomass: Effect Of Surface Functionalization And Ionicstrength, Ezgi̇ Çağlar, Yusuf Osman Donar, Ali̇ Sinağ, İbrahi̇m Bi̇roğul, Selva Bi̇lge, Kivanç Aydincak, Oleksii Pliekhov
Turkish Journal of Chemistry
In this work, surface-functionalization agents and various salts as auxiliaries were used to improve the adsorption capacity of biochars produced via hydrothermal carbonization of glucose, cellulose, and hazelnut shell. The effect of surface functionalization with different acids and bases as well as neutral salts on the adsorption of methylene blue and methyl orange was investigated using Boehm titration, Fourier transform infrared spectroscopy, and X-ray photoelectron spectroscopy techniques. Surface functionalization of biochars leads to an increase in the number of oxygen-containing functional groups on the surface, thus increasing the adsorption capacity. To probe the influence of ionic strength on the adsorption …
Transfer Of The Protonable Surfactant Dipalmitoyl-Phosphatidylcholine Across A Large Liquid/Liquid Interface: A Voltammetric Study, İbrahi̇m Uyanik
Transfer Of The Protonable Surfactant Dipalmitoyl-Phosphatidylcholine Across A Large Liquid/Liquid Interface: A Voltammetric Study, İbrahi̇m Uyanik
Turkish Journal of Chemistry
Adsorption behavior of the zwitterionic phospholipid dipalmitoyl-phosphatidylcholine (DPPC) at the polarizable liquid/liquid interface formed between water and 1,2-dichloroethane electrolyte solutions is studied taking into account both the pH of the aqueous phase and the concentration of the phospholipid in the organic phase by cyclic voltammetry. Experimental results showed that the adsorption of the phospholipid strongly depends on the pH of the aqueous phase, which determines the surface ionization of the polar head of the phospholipid molecule and hence the stability of the adsorbed layer of phospholipids.
Synthesis And Biological Properties Of Novel1-Methyl-2-(2-(Prop-2-Yn-1-Yloxy)Benzylidene) Hydrazine Analogues, Ari̇f Kivrak, Can Yilmaz, Meti̇n Konuş, Hali̇l Koca, Selahatti̇n Aydemi̇r, Jeger Ali Oagaz
Synthesis And Biological Properties Of Novel1-Methyl-2-(2-(Prop-2-Yn-1-Yloxy)Benzylidene) Hydrazine Analogues, Ari̇f Kivrak, Can Yilmaz, Meti̇n Konuş, Hali̇l Koca, Selahatti̇n Aydemi̇r, Jeger Ali Oagaz
Turkish Journal of Chemistry
1-Methyl-2-(2-(prop-2-yn-1-yloxy)benzylidene)hydrazine analogues were readily prepared in good yields by the reaction of 2-(prop-2-yn-1-yloxy)benzaldehydes and methyl hydrazine. The reaction tolerates a variety of substituents on the 2-hydroxybenzaldehyde to form nitro-, halo-, methoxy-, and naphthyl-substituted 1-methyl-2-(2-(prop-2-yn-1-yloxy)benzylidene)hydrazines. The in vitro antioxidant capacity measurements revealed that among all the analyzed hydrazine analogues that surpassed the Trolox standard, 1-(2-(but-3-ynyl)-5-nitrobenzylidene)-2-methylhydrazine had the maximum value, which was approximately 1.7 times that of Trolox.
Removal Of Five Cationic Dyes Using A Resin Coated With Nickel/Nickel Boride Nanoparticles, Merve Çinar, Yasemi̇n İşlek Coşkun, Tüli̇n Deni̇z Çi̇ftçi̇
Removal Of Five Cationic Dyes Using A Resin Coated With Nickel/Nickel Boride Nanoparticles, Merve Çinar, Yasemi̇n İşlek Coşkun, Tüli̇n Deni̇z Çi̇ftçi̇
Turkish Journal of Chemistry
Resins coated with nickel/nickel boride nanoparticles were used to remove brilliant green, methyl violet, methylene blue, phenosafranine, and brilliant cresyl blue from water. The effects of pH, adsorbent dose, contact time, and initial dye concentration on the adsorption efficiencies were investigated. The point of zero charge for the adsorbent was pH 9.5. Isotherm studies were conducted using Langmuir, Freundlich, and Dubinin--Radushkevich models, and thermodynamic studies were also performed. Adsorption of the five dyes was found to obey the Langmuir isotherm model and was endothermic. The maximum adsorption capacities calculated from the Langmuir isotherm were 66.7, 88.5, 144.9, 56.2, and 147.1 …
Electrochemical Behavior And Voltammetric Determination Of Some Nitro-Substituted Benzamide Compounds, Özlem Sağlam, Ferah Cömert Önder, Tuğba Güngör, Mehmet Ay, Yusuf Di̇lgi̇n
Electrochemical Behavior And Voltammetric Determination Of Some Nitro-Substituted Benzamide Compounds, Özlem Sağlam, Ferah Cömert Önder, Tuğba Güngör, Mehmet Ay, Yusuf Di̇lgi̇n
Turkish Journal of Chemistry
Voltammetric behaviors of six nitro-substituted benzamides, which are potential prodrug candidates for nitroreductase-based cancer therapy, were investigated using cyclic voltammetry (CV) and differential pulse voltammetry (DPV). The electrochemical behavior of aromatic nitro (ArNO$_{2})$ compounds by CV indicates that compounds involve various reduction/oxidation steps including the formation of aromatic nitro radical, nitroso, hydroxylamine, and amine groups. Applicability of the voltammetric determination of these prodrug candidates was studied by recording their DPVs, carried out in mixed media (Britton Robinson buffer solution $+$ DMF) at various pH values on a pencil graphite electrode (PGE). Results show that the PGE can offer a disposable, …
An Ionic Liquid/Bismuth Film-Modified Sensor For The Electrochemical Detection Of Cefixime, Yeşi̇m Tuğçe Yaman, Gülçi̇n Bolat, Ceren Yardimci, Serdar Abaci
An Ionic Liquid/Bismuth Film-Modified Sensor For The Electrochemical Detection Of Cefixime, Yeşi̇m Tuğçe Yaman, Gülçi̇n Bolat, Ceren Yardimci, Serdar Abaci
Turkish Journal of Chemistry
A highly sensitive and simple method based on an ionic liquid/ex situ bismuth film-modified single-use pencil graphite electrode (IL/Bi/PGE) was offered for the electrochemical detection of cefixime (CEF) for the first time. The synergistic effects of the ionic liquid and bismuth film combination as the surface modifier remarkably improved the electrochemical response of the modified sensor. Anodic oxidation of CEF was observed at 0.9 V vs. Ag/AgCl/3 M KCl as one well-defined irreversible oxidation peak. Under optimum experimental conditions, the IL/Bi/PGE exhibited a linear relationship for CEF concentrations in the range of 0.005--0.5 $\mu $M (R$^{2}$ = 0.996) with a …
Synthesis And Evaluation Of Novel 1,3,4-Thiadiazole--Fluoroquinolone Hybrids As Antibacterial, Antituberculosis, And Anticancer Agents, Asli Demi̇rci̇, Kaan Gökçe Karayel, Esra Tatar, Si̇nem Öktem Okullu, Ni̇han Ünübol, Paki̇ze Nesli̇han Taşli, Zühtü Tanil Kocagöz, Fi̇kretti̇n Şahi̇n, İlkay Küçükgüzel
Synthesis And Evaluation Of Novel 1,3,4-Thiadiazole--Fluoroquinolone Hybrids As Antibacterial, Antituberculosis, And Anticancer Agents, Asli Demi̇rci̇, Kaan Gökçe Karayel, Esra Tatar, Si̇nem Öktem Okullu, Ni̇han Ünübol, Paki̇ze Nesli̇han Taşli, Zühtü Tanil Kocagöz, Fi̇kretti̇n Şahi̇n, İlkay Küçükgüzel
Turkish Journal of Chemistry
A series of 5-substituted-1,3,4-thiadiazole-based fluoroquinolone derivatives were designed as potential antibacterial and anticancer agents using a molecular hybridization approach. The target compounds 16-25 were synthesized by reacting the corresponding $N$-(5-substituted-1,3,4-thiadiazol-2-yl)-2-chloroacetamides with ciprofloxacin or norfloxacin. The purity and identity of the synthesized compounds were determined by the use of chromatographic and spectral techniques (NMR, IR, MS, etc.) besides elemental analysis. Antibacterial, antituberculosis, and anticancer activity of the target compounds were evaluated against selected strains and cancer cell lines. Compound 20 was appreciated as the most active agent representing antibacterial activity against Escherichia coli and Staphylococcus aureus with MIC values of 4 …
Removal Of Toxic Metals From Canola Oil By Newly Synthesized Calixarene-Based Resin, Muhammad Afzal Kamboh, Shahabuddi̇n Memon, Liaquat Ali Zardari, Hamid Rashidi Nodeh, Syed Tufail Hussain Sherazi, Mustafa Yilmaz
Removal Of Toxic Metals From Canola Oil By Newly Synthesized Calixarene-Based Resin, Muhammad Afzal Kamboh, Shahabuddi̇n Memon, Liaquat Ali Zardari, Hamid Rashidi Nodeh, Syed Tufail Hussain Sherazi, Mustafa Yilmaz
Turkish Journal of Chemistry
This study describes the synthesis, characterization, and application of a new $p-$sulfonatocalix[4]arene-based silica resin (calix-resin 5) for the extraction of selected metals, namely Pb, Cd, Co, Ni, Cu and Fe, from canola oil. Synthesis, morphology, purity, and elemental composition of calix-resin 5 were analyzed by FT-IR spectroscopy, scanning electron microscopy, and energy-dispersive spectroscopy. The metal extraction efficiency of calix-resin 5 was evaluated through the batch-wise method with a flame and graphite furnace atomic absorption spectrometer following the wet acid digestion procedure. The results obtained showed that the newly fabricated adsorbent material calix-resin 5 is an efficient adsorbent and exhibits great …
Synthesis Of 2-Substituted 8-Propargyloxyquinoline Derivatives And Determination Of Their Antioxidant, Antibacterial, And Dna Binding Activities, Ayşegül Gümüş, Veysi̇ Okumuş, Selçuk Gümüş
Synthesis Of 2-Substituted 8-Propargyloxyquinoline Derivatives And Determination Of Their Antioxidant, Antibacterial, And Dna Binding Activities, Ayşegül Gümüş, Veysi̇ Okumuş, Selçuk Gümüş
Turkish Journal of Chemistry
2-Substituted 8-propargyloxyquinoline derivatives have been synthesized from 2-substituted-8-hydroxyquinolines by O-propargylation method (30%-98% yields). The newly synthesized compounds were tested for in vitro antioxidant activities such as DPPH radical scavenging, ferrous chelating, and reducing power activities. The maximum radical scavenging (46.5%) and reducing power activities were obtained from 1 and maximum ferrous chelating effect was obtained from 6 (72.1%) at the concentration of 500 $\mu $g/mL. To indicate DNA binding activity of the complexes calf thymus DNA was used. The compounds were also evaluated for their antimicrobial activity against three gram-positive and three gram-negative bacteria. Compounds 3 and 5 exhibited antibacterial …
Synthesis Of Acetamide Derivatives Of 1,2,4-Triazole Bearing Azinane And Their Binding Interactions With Bovine Serum Albumin Using Spectroscopic Techniques, Javed Iqbal, Aziz Ur Rehman, Muhammad Athar Abbasi, Sabahat Zahra Siddiqui, Hira Khalid, Sabina Jhaumeer Laulloo, Nausheen Joondan, Aniisah Banu Taupass, Shahid Rasool, Syed Adnan Ali Shah
Synthesis Of Acetamide Derivatives Of 1,2,4-Triazole Bearing Azinane And Their Binding Interactions With Bovine Serum Albumin Using Spectroscopic Techniques, Javed Iqbal, Aziz Ur Rehman, Muhammad Athar Abbasi, Sabahat Zahra Siddiqui, Hira Khalid, Sabina Jhaumeer Laulloo, Nausheen Joondan, Aniisah Banu Taupass, Shahid Rasool, Syed Adnan Ali Shah
Turkish Journal of Chemistry
A new series of acetamide derivatives containing 1,2,4-triazole and azinane moieties has been synthesized and characterized using $^{1}$H NMR, $^{13}$C NMR, IR, and EI-MS spectroscopic analysis. The intermediate triazole was synthesized through a sequential synthesis of carboxylate and carbohydrazide. The bovine serum albumin (BSA) binding of the newly synthesized 1,2,4-triazole derivatives was evaluated along with thermodynamics, site-selective binding, and synchronous study. The results obtained by BSA binding as well as thermodynamic studies justify that all the compounds show spontaneous interaction with BSA and could be effectively distributed and eliminated from the body. Therefore, the triazole-based analogs might be a useful …
Quantification Of Flavonoids Isolated From \Textit{Mentha Spicata} In Selected Clones Of Turkish Mint Landraces, Ramazan Erenler, İsa Telci̇, Mahfuz Elmastaş, Hüseyi̇n Akşi̇t, Fati̇h Gül, Ali̇ Riza Tüfekçi̇, İbrahi̇m Demi̇rtaş, Ömer Kayir
Quantification Of Flavonoids Isolated From \Textit{Mentha Spicata} In Selected Clones Of Turkish Mint Landraces, Ramazan Erenler, İsa Telci̇, Mahfuz Elmastaş, Hüseyi̇n Akşi̇t, Fati̇h Gül, Ali̇ Riza Tüfekçi̇, İbrahi̇m Demi̇rtaş, Ömer Kayir
Turkish Journal of Chemistry
Mint has been used extensively in traditional medicines, spices, and herbal teas throughout the world. Isolation of flavonoids from Mentha spicata and quantification of these compounds in selected clones of Turkish mints landraces were achieved. M. spicata was dried in shade and then boiled in water. After filtration, the aqueous extract was partitioned with ethyl acetate. The solvent was removed under reduced pressure to yield the extract, subjected to silica gel column chromatography to isolate 5-demethyl sinensetin (1), hesperidin (2), didymin (3), and linarin (4), the structures of which were elucidated by 1D NMR, 2D NMR, and LC-TOF/MS. The isolated …
Experimental And Theoretical Study Of Nh$_{3}$ Adsorption And Desorption Over A Cu-Chabazite Nh$_{3}$-Scr Catalyst, Selmi̇ Eri̇m Bozbağ, Mutlu Şi̇mşek, Onur Demi̇r, Deni̇z Şanli Yildiz, Hüseyi̇n Barkin Özener, Gökhan Hi̇sar, Can Erkey
Experimental And Theoretical Study Of Nh$_{3}$ Adsorption And Desorption Over A Cu-Chabazite Nh$_{3}$-Scr Catalyst, Selmi̇ Eri̇m Bozbağ, Mutlu Şi̇mşek, Onur Demi̇r, Deni̇z Şanli Yildiz, Hüseyi̇n Barkin Özener, Gökhan Hi̇sar, Can Erkey
Turkish Journal of Chemistry
NH$_{3}$ adsorption and desorption behavior of a commercial Cu-chabazite (CHA) NH$_{3}$ selective catalytic reduction (NH$_{3}$-SCR) catalyst was studied in the presence and absence of H$_{2}$O. NH$_{3}$ uptake values at various adsorption temperatures were obtained during various steps of the adsorption and temperature-programmed desorption (TPD) experiments. Total NH$_{3}$ uptake decreased from 4.6 to 1.6 g NH$_{3}$/L catalyst when the adsorption temperature was increased from 50 to 300 $^{\circ}$C. Three major adsorption sites for NH$_{3}$ adsorption could be identified and quantified using TPD experiments, namely loosely, moderately, and strongly bound NH$_{3}$ with peak centers at around 147, 266, and 447 $^{\circ}$C. The …