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Isolation And Identification Of Culturable Forms Of Bacteria From The Sweet Potato Whitefly Bemesia Tabaci Genn. (Homoptera: Aleyrodidae) In Jordan, Mazen Ahmad Ateyyat, Mohamad Shatnawi, Mohammad Al-Mazra'awi
Isolation And Identification Of Culturable Forms Of Bacteria From The Sweet Potato Whitefly Bemesia Tabaci Genn. (Homoptera: Aleyrodidae) In Jordan, Mazen Ahmad Ateyyat, Mohamad Shatnawi, Mohammad Al-Mazra'awi
Turkish Journal of Agriculture and Forestry
Homopteran insects contain bacteria in their cells and tissues known as "secondary symbionts," which under special environmental circumstances act against their host insects. In this study, both molecular- and culture-based methods were used to characterize the bacteria associated with the whitefly in Jordan. We isolated, cultured, and identified 11 species of bacteria from nymphs (6 species), adults (8 species), and parasitized pupae (2 species) of the whitefly Bemesia tabaci collected from different vegetable crops planted in different localities in Jordan. The identities of the cultured bacteria were evaluated using PCR with sequencing of 16S rRNA gene fragments and fluorescence in …
The Influence Of Fennel Feeding On Development, Survival, And Reproduction In Podisus Nigrispinus (Dallas) (Heteroptera: Pentatomidae), Jose Bruno Malaquias, Francisco De Sousa Ramalho, Jefferson Virginio Silva Souza, Karjoene Cassimiro Vieira Rodrigues, Paulo Alves Wanderley
The Influence Of Fennel Feeding On Development, Survival, And Reproduction In Podisus Nigrispinus (Dallas) (Heteroptera: Pentatomidae), Jose Bruno Malaquias, Francisco De Sousa Ramalho, Jefferson Virginio Silva Souza, Karjoene Cassimiro Vieira Rodrigues, Paulo Alves Wanderley
Turkish Journal of Agriculture and Forestry
The aim of this study was to determine the effectiveness of fennel (Foeniculum vulgare Mill.) leaves as food on development, survival, and reproduction in Podisus nigrispinus (Dallas). Newly hatched P. nigrispinus nymphs were used in this study. The prey consisted of 3rd-instar Alabama argillacea (Huebner) larvae. Fennel and cotton leaves were not sufficient to enable the full development of the predator to its adult stage. It was verified that 35% of the nymphs that fed on cotton leaves and water, and 31% of the nymphs that fed on fennel leaves and water completed their 2nd instar in 5.68 days and …
Transformation Of Some Organic Matter Components In Organic Soils Exposed To Drainage, Barbara Kalisz, Andrzej Lachacz, Roman Glazewski
Transformation Of Some Organic Matter Components In Organic Soils Exposed To Drainage, Barbara Kalisz, Andrzej Lachacz, Roman Glazewski
Turkish Journal of Agriculture and Forestry
In drained Histosols used as pastures or arable fields the muck-forming process transforms organic soil formations into muck. The rush vegetation (Caricetum acutiformis and Glycerietum maximae) covering Histosols in the organic matter accumulation stage is replaced by meadow vegetation (Molinietalia order). During sustained drainage mucks are transformed into muck-like formations that contain less than 12% organic carbon. The aim of this study was to report the changes in organic matter initiated by the muck-forming process. Soil organic matter was fractionated into humic-acid carbon, fulvic-acid carbon, and humins. The amount of carbon susceptible to oxidation with KMnO4 was also determined and, …
Prey Preference, Interaction With Selected Natural Enemies, And Alternative Nutritional Sources Of The Mirid Bug Dicyphus Tamaninii Wagner, Ihab Ghabeish, Azzam Saleh, Abdulfattah Dababat
Prey Preference, Interaction With Selected Natural Enemies, And Alternative Nutritional Sources Of The Mirid Bug Dicyphus Tamaninii Wagner, Ihab Ghabeish, Azzam Saleh, Abdulfattah Dababat
Turkish Journal of Agriculture and Forestry
The present study aimed to investigate the prey preference of the omnivorous bug Dicyphus tamaninii Wagner (Heteroptera: Miridae) among 5 different prey species, and its interaction with 3 different natural enemies commonly used in greenhouses. Moreover, the survival duration of the predator was studied in response to different nutritional sources. In multi-choice trials all developmental stages of the predator tested, namely N_3, N_5, and adult female, showed a clear preference for Aphis gossypii Glover over other prey species offered. Nonetheless, a considerable number of Tetranychus urticae Koch, Frankliniella occidentalis (Pergande), and Trialeurodes vaporariorum (Westwood) were also consumed. Myzus persicae (Sulzer) …
Pathogen Reduction Effects Of Solar Drying And Soil Application In Sewage Sludge, Nurtaç Öğleni̇, Sai̇m Özdemi̇r
Pathogen Reduction Effects Of Solar Drying And Soil Application In Sewage Sludge, Nurtaç Öğleni̇, Sai̇m Özdemi̇r
Turkish Journal of Agriculture and Forestry
The responses of sludge faecal coliforms, Salmonella, and Ascaris lumbricoides to heat drying, solar dehydration, and inactivation in soil are examined in this study. The presence of Salmonella in raw sludge cake after treatment was low, and absent for most of the cases. Likewise, the viable Ascaris eggs were not determined because of absent or low prevalence. Faecal coliforms, on the other hand, drastically decreased from 4.2 × 10^7 MPN g^{-1} Dry Solid (DS) to absence by heat drying. Faecal coliform numbers in solar and non-solar drying treatments were not declined below 1.0 × 10^3 MPN g^{-1} after drying to …
Effect Of Foliar Applied Kinetin And Indole Acetic Acid On Maize Plants Grown Under Saline Conditions, Cengi̇z Kaya, Ati̇lla Levent Tuna, Abdulkadi̇r Mustafa Okant
Effect Of Foliar Applied Kinetin And Indole Acetic Acid On Maize Plants Grown Under Saline Conditions, Cengi̇z Kaya, Ati̇lla Levent Tuna, Abdulkadi̇r Mustafa Okant
Turkish Journal of Agriculture and Forestry
This study examined the effects of kinetin (KIN) and indoleacetic acid (IAA) sprayed on the leaves of salinity-stressed maize (Zea mays L. cv., DK 647 F1) plants grown in field conditions. Salt stress was created by adding 100 mM NaCl to the irrigation water through a drip irrigation system during the irrigation schedule. Kinetin (KIN), indole acetic acid (IAA), and their combinations were sprayed foliarly. Salt stress (S) reduced the total dry matter, grain yield, chlorophyll content, and relative water content (RWC), but increased electrolyte leakage and proline accumulation in the maize plants. Foliar applications of both KIN and IAA …
Distribution Of Natural Radionuclides In Anthrosol-Type Soil, Ivana Vukasinovic, Aleksandar Djordjevic, Milos Rajkovic, Dragana Todorovic, Vladimir Pavlovic
Distribution Of Natural Radionuclides In Anthrosol-Type Soil, Ivana Vukasinovic, Aleksandar Djordjevic, Milos Rajkovic, Dragana Todorovic, Vladimir Pavlovic
Turkish Journal of Agriculture and Forestry
Taking into account the importance of distribution and transfer of radionuclides in the soil-water-plant system, especially in agricultural fields, in this study, natural radionuclide determination in regosol-type soil was performed. The correlations between main soil properties and the contents of natural isotopes ^{238}U, ^{226}Ra, ^{232}Th, and ^{40}K in agricultural soil and their distribution through the soil depth was studied. For determination of natural radionuclide activity concentration, we used the CANBERRA HPGe detector, applying the gamma spectrometry method. The investigation was performed on an experimental peach tree field characterized by a anthrosol type of soil, derived from the chernozem type of …
Synthesis, Characterization, And Optical Properties Of Novel 2,5-Bis[4-(2-(-Arylvinyl)Phenyl]-1,3,4-Oxadiazoles, Dao-Hang He, Yong-Chuang Zhu, Zhuo-Ru Yang, Ai-Xi Hu, Gao Cao
Synthesis, Characterization, And Optical Properties Of Novel 2,5-Bis[4-(2-(-Arylvinyl)Phenyl]-1,3,4-Oxadiazoles, Dao-Hang He, Yong-Chuang Zhu, Zhuo-Ru Yang, Ai-Xi Hu, Gao Cao
Turkish Journal of Chemistry
Six novel 2,5-bis[4-(2-arylvinyl)phenyl]-1,3,4-oxadiazoles were synthesized by introducing 1,3,4-oxadiazole moiety into the stilbene skeleton. The synthesis route included the cyclization of p-toluic acid and hydrazine hydrate catalyzed by polyphosphoric acid (PPA), bromination of 1,3-dibromo-5,5-dimethylhydantoin (DBDMH), esterification, and the Wittig-Horner reaction. All the title compounds were characterized by ^1H-NMR, MS, and elemental analysis. UV-Vis absorption and fluorescence emission spectra in THF solution were investigated; the compounds may have potential for use in organic optical materials.
The Effects Of Dietary Conjugated Linoleic Acid (Cla) On Fatty Acid Composition And Key Enzymes Of Fatty Acid Oxidation In Liver And Muscle Of Geese, Xuhui Zhang, Baowei Wang, Fangyu Long, Lei Wang, Zhigang Yang
The Effects Of Dietary Conjugated Linoleic Acid (Cla) On Fatty Acid Composition And Key Enzymes Of Fatty Acid Oxidation In Liver And Muscle Of Geese, Xuhui Zhang, Baowei Wang, Fangyu Long, Lei Wang, Zhigang Yang
Turkish Journal of Veterinary & Animal Sciences
The objective of this study was to determine the influence of conjugated linoleic acid (CLA) on fatty acid composition and key enzymes of fatty acid oxidation in liver and muscle of geese. A total of 192 1-day-old geese were randomly assigned to 1 of 4 dietary groups, and were fed for 56 days on diets containing 2.5% soybean oil (group A, control group) or 2.0% soybean oil with 0.5% CLA (group B), 1.0% soybean oil with 1.5% CLA (group C), and 2.5 % CLA (group D). Geese fed CLA had a decreased abdominal fat percentage (AFP) (P < 0.01) compared with the control. It was observed that dietary CLA levels had a significant effect on the body weight, weight gain, feed conversion rate (FCR) (P < 0.05), and feed intake (P < 0.01). Fatty acid composition showed a significant increase of the biologically active cis-9, trans-11 and trans-10, and cis-12 CLA isomers in both liver and muscle of geese fed CLA (P < 0.01). Dietary CLA led to an increase (P < 0.01) in saturated fatty acid (SFA) and a reduction in monounsaturated fatty acid (MUFA) (P < 0.05) concentrations in both liver and muscle. In liver, dietary CLA increased (P < 0.05) acyl CoA oxidase (ACO) activity, but did not affect carnitine palmitoyltransferase-I (CPT-I) activity compared with the control. CPT-I activity was significantly increased by 2.5% dietary CLA in muscle, where ACO activity was decreased at 1.5% CLA level. The results obtained suggested that geese can successfully incorporate CLA in both liver and muscle, which could be beneficial in the human diet, through provision of bioactive fatty acids with no detrimental effects on n-3 PUFA levels.
Variability In The Response Of Chickpea Cultivars To Short-Term Salinity, In Terms Of Water Retention Capacity, Membrane Permeability, And Osmo-Protection, Neera Garg, Ranju Singla
Variability In The Response Of Chickpea Cultivars To Short-Term Salinity, In Terms Of Water Retention Capacity, Membrane Permeability, And Osmo-Protection, Neera Garg, Ranju Singla
Turkish Journal of Agriculture and Forestry
Seedlings of 2 chickpea cultivars (Cicer arietinum L.), salt-tolerant kabuli (CSG 9651) and salt-sensitive desi (DCP 92-3), were raised under control (distilled water) and salinity (EC = 4, 6, and 8 dS m^{-1}) conditions. Salt treatments were applied once symbiosis was well established (i.e. 15 days after sowing [DAS]) and continued until the last sampling stage (i.e. 70 DAS). The experiments were terminated 70 DAS and the plants were analyzed 40 and 70 DAS. Salt stress decreased the relative water content (RWC), membrane stability index (MSI), leaf chlorophyll (CHL), plant biomass, and grain yield, and increased total soluble sugars in …
Microarray Analysis Of Late Response To Boron Toxicity In Barley (Hordeum Vulgare L.) Leaves, Mehmet Tufan Öz, Remzi̇ye Yilmaz, Füsun Eyi̇doğan, Leo De Graaff, Meral Yücel, Hüseyi̇n Avni̇ Öktem
Microarray Analysis Of Late Response To Boron Toxicity In Barley (Hordeum Vulgare L.) Leaves, Mehmet Tufan Öz, Remzi̇ye Yilmaz, Füsun Eyi̇doğan, Leo De Graaff, Meral Yücel, Hüseyi̇n Avni̇ Öktem
Turkish Journal of Agriculture and Forestry
DNA microarrays, being high-density and high-throughput, allow quantitative analyses of thousands of genes and their expression patterns in parallel. In this study, Barley1 GeneChip was used to investigate transcriptome changes associated with boron (B) toxicity in a sensitive barley cultivar (Hordeum vulgare L. cv. Hamidiye). Eight-day-old aseptically grown seedlings were subjected to 5 or 10 mM boric acid (B(OH)_3) treatments for 5 days and expression profiles were determined with DNA microarrays using total RNA from leaf tissues. Among the 22,840 transcripts - each represented with a probe set on the GeneChip - 19,424 probe sets showed intensity values greater than …
Control Of Tribolium Castaneum (Herbst) (Coleoptera: Tenebrionidae) With Spinosad Dust Formulation In Different Oilseeds, Adel Khashaveh, Masumeh Ziaee, Mohammad Hasan Safaralizadeh, Farzaneh Attighi Lorestani
Control Of Tribolium Castaneum (Herbst) (Coleoptera: Tenebrionidae) With Spinosad Dust Formulation In Different Oilseeds, Adel Khashaveh, Masumeh Ziaee, Mohammad Hasan Safaralizadeh, Farzaneh Attighi Lorestani
Turkish Journal of Agriculture and Forestry
The insecticidal effect of spinosad dust, a formulation that contains 0.125% spinosad, was evaluated against adults of Tribolium castaneum (Herbst) on 4 commodities: safflower, sunflower, sesame, and canola. Fifty grams of each commodities were treated with 3 doses of the formulation: 100, 200, and 300 ppm, (corresponding to 0.125, 0.25, and 0.375 mg kg^{-1} a.i., respectively) at 27 °C and 60 ± 5% relative humidity. The mortality of T. castaneum adults was measured after 1, 2, 7, 14, and 21 days of exposure. After the mortality count on day 21, all surviving insects were removed while the samples were kept …
The Use Of Aridity Index To Assess Implications Of Climatic Change For Land Cover In Turkey, Derya Önder, Mehmet Aydin, Süha Berberoğlu, Sermet Önder, Tomohisa Yano
The Use Of Aridity Index To Assess Implications Of Climatic Change For Land Cover In Turkey, Derya Önder, Mehmet Aydin, Süha Berberoğlu, Sermet Önder, Tomohisa Yano
Turkish Journal of Agriculture and Forestry
This study was carried out to determine the impacts of climate change on aridity and land cover in Turkey. Data for future (2070s) climate change, according to present conditions (1990s), were estimated from the prediction results of a regional climate model (RCM). The RCM, which was developed in Japan, is based on the MRI model. The potential impacts of climate change were estimated according to the A2 scenario of Special Report on Emissions Scenarios (SRES). Aridity index, the ratio of precipitation to potential evapotranspiration, was computed by using measured data for the present condition and estimated data by the RCM …
Association Of Polymorphisms In The Intron 1 Of Duck Prolactin With Egg Performance, Hui Fang Li, Wen Qi Zhu, Kuan Wei Chen, Tang Jie Zhang, Wei Tao Song
Association Of Polymorphisms In The Intron 1 Of Duck Prolactin With Egg Performance, Hui Fang Li, Wen Qi Zhu, Kuan Wei Chen, Tang Jie Zhang, Wei Tao Song
Turkish Journal of Veterinary & Animal Sciences
Gaoyou duck (Chinese indigenous breed) is famous for double-yolked egg. In the present study, SNP of prolactin (PRL) gene intron 1 of Gaoyou duck was detected by PCR-RFLP and DNA sequencing. The results indicated that there were 2 Dra I recognition sites in intron 1 of the PRL gene, but only 1 was of polymorphism. A T/C mutation at the position of the 1326 bp of the PRL gene was found by DNA sequencing, and resulted in 3 genotypes AA, AB, and BB. The frequencies of genotype BB and allele B were the highest. The association analysis between the polymorphism …
Occurrence Of Haematopinus Suis Linnaeus, 1758 (Insecta, Anopluridae) On A Wild Boar (Sus Scrofa), Oya Gi̇ri̇şgi̇n, A. Onur Gi̇ri̇şgi̇n, Fi̇gen Sönmez, Ç. Volkan Akyol
Occurrence Of Haematopinus Suis Linnaeus, 1758 (Insecta, Anopluridae) On A Wild Boar (Sus Scrofa), Oya Gi̇ri̇şgi̇n, A. Onur Gi̇ri̇şgi̇n, Fi̇gen Sönmez, Ç. Volkan Akyol
Turkish Journal of Veterinary & Animal Sciences
A wild boar (Sus scrofa) about 2 years old was brought to our parasitology laboratory from Orhaneli region, Bursa province. It was examined for ectoparasites and 32 lice collected from the animal's head were inspected and identified as Haematopinus suis. Five of them were found to be as nymphs, whereas 27 were adults. This paper is the first report of H. suis found in Bursa province, Turkey.
Fumigant Toxicity Of Plant Essential Oils And Selected Monoterpenoid Components Against The Adult German Cockroach, Blattella Germanica (L.) (Dictyoptera: Blattellidae), Hasan Tunaz, Mehmet Kubi̇lay Er, Ali̇ Arda Işikber
Fumigant Toxicity Of Plant Essential Oils And Selected Monoterpenoid Components Against The Adult German Cockroach, Blattella Germanica (L.) (Dictyoptera: Blattellidae), Hasan Tunaz, Mehmet Kubi̇lay Er, Ali̇ Arda Işikber
Turkish Journal of Agriculture and Forestry
The fumigant toxicity of various essential oils and selected monoterpenoid components were tested against the adult German cockroach, Blattella germanica (L.) (Dictyoptera: Blattellidae). Responses varied according to plant material, concentration, and exposure time. High insecticidal activity against adult B. germanica specimens was achieved with allyl isothiocyanate (component of horseradish) and the essential oil of Allium sativum (L.) (Liliales: Liliaceae) at the concentration of 2.5 and 5 \mul l^{-1} of air, respectively, while the essential oils of Thymus vulgaris (L.) (Lamiales: Lamiaceae), Oregano dubium (L.) (Lamiales: Lamiaceae), Allium cepa (L.) (Liliales: Liliaceae), and Rosemarinus officinalis (L.) (Lamiales: Lamiaceae), and the monoterpenoid …
Genetic Analysis Of Some Physical Properties Of Bread Wheat Grain (Triticum Aestivum L. Em Thell), Cemal Yücel, Faheem Shehzad Baloch, Hakan Özkan
Genetic Analysis Of Some Physical Properties Of Bread Wheat Grain (Triticum Aestivum L. Em Thell), Cemal Yücel, Faheem Shehzad Baloch, Hakan Özkan
Turkish Journal of Agriculture and Forestry
Very little information exists on the relative genetic architecture of the grain physical properties of wheat. The physical properties of grain have a direct or indirect influence on the milling and baking quality of wheat. Therefore, understanding the inheritance of grain physical properties will be useful to improve varieties with better quality. Five bread wheat cultivars were crossed in order to evaluate the mode of inheritance and combining ability and the correlation of the grain's physical properties. Analysis of variance for combining ability showed that both additive and non-additive gene actions were involved in controlling most of the traits. Magnitudes …
Synthesis, Spectral Characterization, And Antimicrobial Activity Of Arsenic(Iii) And Bismuth(Iii) Tri[3(2´-Hydroxyphenyl)-5-(4-Subsituted Phenyl)Pyrazolinates], Umesh Nath Tripathi, Afshan Siddqui, Jeeven Singh Solanki, Mohammad Safi Ahmad, Arpan Bhardwaj, Tulsi Ram Thapak
Synthesis, Spectral Characterization, And Antimicrobial Activity Of Arsenic(Iii) And Bismuth(Iii) Tri[3(2´-Hydroxyphenyl)-5-(4-Subsituted Phenyl)Pyrazolinates], Umesh Nath Tripathi, Afshan Siddqui, Jeeven Singh Solanki, Mohammad Safi Ahmad, Arpan Bhardwaj, Tulsi Ram Thapak
Turkish Journal of Chemistry
Arsenic(III) tripyrazolinates and bismuth(III) tripyrazolinates of the type M(C_{15}H_{12}N_2OX)_3 [where C_{15}H_{12}N_2OX = 3(2'-hydroxyphenyl)-5-(4-substituted phenyl)pyrazoline] have been synthesized by the reaction of MCl_3 and sodium salt of pyrazolines in 1:3 molar ratio in anhydrous benzene at elevated temperature. These newly synthesized derivatives have been characterized by elemental analysis (C, H, N, As, and Bi), molecular weight measurement, spectral [IR and multinuclear NMR (^1H & ^{13}C)] and x-ray diffraction studies. The bonding mode of pyrazolines and coordination no. of arsenic(III) and bismuth(III) in these derivatives have been discussed. Antibacterial and antifungal potential of free pyrazoline and some arsenic(III) tripyrazolinates and bismuth(III) tripyrazolinates …
Characterization And Electrochemical Study Of Nano-Composition Based Methylene Blue- And Riboflavin-Nafion On The Surface Of Gold Electrode, Saeed Rezaei-Zarchi, Aisha Javed, Hossein Mirjalili, Hossain Bari Abarghouei, Seyed Ali Hashemizadeh
Characterization And Electrochemical Study Of Nano-Composition Based Methylene Blue- And Riboflavin-Nafion On The Surface Of Gold Electrode, Saeed Rezaei-Zarchi, Aisha Javed, Hossein Mirjalili, Hossain Bari Abarghouei, Seyed Ali Hashemizadeh
Turkish Journal of Chemistry
A functional membrane, composed of the nanoparticles of methylene blue (MB) and Nafion, was constructed during the present study. The materials were characterized by the methods of scanning electron microscopy (SEM), transmission electron microscopy (TEM), and UV-Visible and FT-IR. The average diameter of new nano-particles was estimated to be about 60 nm. A novel Nafion-riboflavin membrane was also constructed and characterized by the methods of SEM, TEM and UV-Visible spectroscopy. The estimated average diameter of the new nanoparticles was about 60 nm. The functional membranes of Nafion-riboflavin and Nafion-methylene blue showed a quasi-reversible electrochemical behavior, on the gold electrode, with …
Study Of Binary Complexes Of Nickel(Ii), Copper(Ii), And Vanadium(V) With Acetazolamide In Aqueous Medium By Voltammetry, İclal Bulut
Turkish Journal of Chemistry
The voltammetric behaviour of acetazolamide, the systemic carbonic anhydrase inhibitor, in the presence of some metal ions (Cu(II), Ni(II), and V(V)) were investigated using square-wave and cyclic voltammetry in physiological pH (pH 7.4). Square-wave voltammogram of acetazolamide in the absence of metal ions gave only 1 reduction peak at -1.65 V attributed to a catalytic hydrogen peak. Three reversible peaks at -0.068, -0.262, and -0.434 V were observed for the solutions containing both copper(II) ions and acetazolamide in the SWV. The peak at -0.434 V was attributed to Cu(II)-acetazolamide complex. In the presence of acetazolamide, copper-acetazolamide complex formation was proved …
Spectroscopic Studies And Hartree-Fock Ab Initio Calculations Of A Substituted Amide Of Pyrazine-2-Carboxylic Acid - C_{16}H_{18}Cln_3o, Chacko Yohannan Panicker, Hema Tresa Vanghese, Thaha Thansani
Spectroscopic Studies And Hartree-Fock Ab Initio Calculations Of A Substituted Amide Of Pyrazine-2-Carboxylic Acid - C_{16}H_{18}Cln_3o, Chacko Yohannan Panicker, Hema Tresa Vanghese, Thaha Thansani
Turkish Journal of Chemistry
A substituted amide of pyrazine-2-carboxylic acid was prepared and the IR spectrum was recorded and analysed. The compound prepared was identified by NMR and mass spectra. The vibrational frequencies of the title compound were computed using the Hartree-Fock level of theory using the 6-31G* basis set and compared with the experimental data. The red shift of the NH stretching frequency indicates weakening of the NH bond. The splitting of the NH stretching bond is due to Davidov coupling between neighbouring units. The first hyperpolarizability, infrared intensities, and Raman activities are reported. Methyl substitution affects all the carbon-nitrogen and carbon-carbon bond …
Synthesis And Physical Studies Of Polycarbonate Of P-Tert-}Butylcalix[4]Arene: A Highly Selective Receptor For Na^+, Muhammad Ashram, Nawash Al Ghezawi, Ibrahim Abu Awaad, Gülsen Asman
Synthesis And Physical Studies Of Polycarbonate Of P-Tert-}Butylcalix[4]Arene: A Highly Selective Receptor For Na^+, Muhammad Ashram, Nawash Al Ghezawi, Ibrahim Abu Awaad, Gülsen Asman
Turkish Journal of Chemistry
The synthesis and characterization of a polycarbonate of p-tert-butylcalix[4]arene 4 are reported. It was synthesized by condensation of p-tert-butylcalix[4]arenetetraol derivative 3 with ethyl chloroformate. This new polymer possesses a hydrolyzable backbone and tunable hydrophobic/hydrophilic properties. The experimental results indicate that the polycarbonate was successfully synthesized with average molecular weight \overline{M}_{w}, (2.328 \times 10^4 g/mol), which was determined by static light scattering method using a Berry plot. The structure of this polymer was determined by IR spectroscopy. The thermal properties were investigated using differential scanning calorimetry (DSC). The degree of crystallinity was measured by means of XRD. The extraction ability of …
An Efficient One Pot Synthesis Of 1,4-Dihydropyridines Using Alumina Sulfuric Acid (Asa) Catalyst, Mustafa Arslan, Cüneyt Faydali, Mustafa Zengi̇n, Mustafa Küçüki̇slamoğlu, Hülya Demi̇rhan
An Efficient One Pot Synthesis Of 1,4-Dihydropyridines Using Alumina Sulfuric Acid (Asa) Catalyst, Mustafa Arslan, Cüneyt Faydali, Mustafa Zengi̇n, Mustafa Küçüki̇slamoğlu, Hülya Demi̇rhan
Turkish Journal of Chemistry
An efficient synthetic method for 1,4-dihydropyridines has been developed using 3 or 4 component condensation reactions of aldehydes, 1,3-dicarbonyl compounds, and ammonium acetate in the presence of alumina sulfuric acid catalyst in minimum methanol at reflux temperature. This procedure offers several advantages including high yields, an environmentally friendly procedure, short reaction times, and a simple work-up procedure.
Preparation And Characterization Of Magnetic Chitosan Nanospheres, Doina Hritcu, Marcel I. Popa, Nuculina Popa, Vasile Badescu, Vera Balan
Preparation And Characterization Of Magnetic Chitosan Nanospheres, Doina Hritcu, Marcel I. Popa, Nuculina Popa, Vasile Badescu, Vera Balan
Turkish Journal of Chemistry
A method for the preparation of magnetite/chitosan composite nanoparticles was developed. Colloidal magnetite particles (Fe_3O_4 produced by co-precipitation and stabilized in suspension by adding a non-ionic surfactant (Pluronic F127) were subsequently covered with a layer of chitosan (CS) prepared by ionotropic gelation using sodium tripolyphosphate (STPP) as a crosslinking agent. The products were characterized in terms of the following parameters: size distribution and \zeta-potential (by laser diffraction analysis), surface morphology (TEM), composition (FTIR, elemental analysis), magnetic properties (magnetic susceptibility analysis), and concentration of surface functional groups (potentiometric titration). The synthesis parameters were optimized for obtaining uniformly distributed colloidally stable, biocompatible …