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Hydrogeochemical Fingerprints Of A Mixohaline Wetland In The Mediterranean: Güllük Coastal Wetland Systems- Gcws (Muğla, Turkey), Adi̇le Meli̇s Somay Altaş
Hydrogeochemical Fingerprints Of A Mixohaline Wetland In The Mediterranean: Güllük Coastal Wetland Systems- Gcws (Muğla, Turkey), Adi̇le Meli̇s Somay Altaş
Turkish Journal of Earth Sciences
The Güllük coastal wetland system (GCWS), which is located at the contact point of the Menderes Massif and Lycian Nappe, consists of both brackish karstic [Güllük Lagoon wetland (GLW)] and saline [Boğaziçi-Tuzla (Bargylia) coastal wetland (BTW)] ecosystems in western Turkey, and is under protection as a national wetland of importance. This area is important for its unique wetland features, aquaculture, tourism, agriculture, Bodrum airport, and Güllük port facilities. The aim of this study was to evaluate the GLW and BTW, both hydrogeologically and hydrogeochemically, for the first time together. The mixohaline GCWS is recharged from precipitation, streams, and brackish karstic …
The Multidisciplinary Approaches On Facies Developments And Depositional Systems Of The Bahçecik Travertines, Gümüşhane, Ne-Turkey, Rai̇f Kandemi̇r, Ezher Tagli̇asacchi̇, Mi̇ne Sezgül Kayseri̇ Özer, Di̇lek Şaffak, Fati̇h Köroğlu, Hsun-Ming Hu, Chuan-Chou Shen
The Multidisciplinary Approaches On Facies Developments And Depositional Systems Of The Bahçecik Travertines, Gümüşhane, Ne-Turkey, Rai̇f Kandemi̇r, Ezher Tagli̇asacchi̇, Mi̇ne Sezgül Kayseri̇ Özer, Di̇lek Şaffak, Fati̇h Köroğlu, Hsun-Ming Hu, Chuan-Chou Shen
Turkish Journal of Earth Sciences
The Bahçecik travertines, located in Gümüşhane (NE-Turkey) have been investigated for the first time using a multidisciplinary approach, which included sedimentological (lithofacies, depositional system), petrographic, radiometric 230Th dating, geochemical analysis (stable isotopes), palynomorphs and geophysics (GPR). A carbonate build-up, 12 m thick, was formed with some interruptions, through the middle Pleistocene period. For this study, two travertine sections (F and D) were extensively used to figure out palaeoenvironmental and palaeoclimatic proxies. The main precipitation cycles, separated by palaeosol levels, have been described and interpreted from a sedimentological perspective. The carbonate deposits consist of shrubs, crystalline crust, reed, laminated (micritic), pisoids, …
High-Resolution Temperature And Precipitation Variability Of Southwest Anatolia Since 1730 Ce From Lake Gölcük Sedimentary Records, Iliya Bauchi Danladi, Sena Akçer Ön, Zeki̇ Bora Ön, Sabine Schmidt
High-Resolution Temperature And Precipitation Variability Of Southwest Anatolia Since 1730 Ce From Lake Gölcük Sedimentary Records, Iliya Bauchi Danladi, Sena Akçer Ön, Zeki̇ Bora Ön, Sabine Schmidt
Turkish Journal of Earth Sciences
We report high-resolution multiproxy analyses [lithology, μXRF and magnetic susceptibility (MS)] of two short gravity sediment cores from the crater Lake Gölcük, southwest Turkey. Our results provide a detailed hydroclimatic record for the last ~290 years. Aided with factor analysis of μXRF data and 210210Pb and 137Cs dating, our multiproxy data show that the Lake Gölcük records documented a series of wet and dry periods between ~ 1730 (±71) and ~ 2018 (±3) CE. Wet periods are evidenced by dark olive green mixed lithology (sandy, clay, and silts) and high values in MS and log(Sr/Ca). On the other hand, dry …
Functional Fingerprinting Estimates Renewal Opportunities For Tree Species In A Mixed Turkey Oak Forest, Éva Salamon Albert, Ágnes Csiszár, Dénes Bartha
Functional Fingerprinting Estimates Renewal Opportunities For Tree Species In A Mixed Turkey Oak Forest, Éva Salamon Albert, Ágnes Csiszár, Dénes Bartha
Turkish Journal of Agriculture and Forestry
Maintaining and managing trees with different ecological plasticity under climate conditions aggravated by short-term variability are major challenges for foresters. Our aims were to investigate species-specific ecophysiological responses of canopy trees in a mixed Turkey oak forest during their early-phase regeneration. We measured plant carbon and water exchange with portable IRGA equipment under natural field conditions (canopy gap) and in a climate-controlled (standardized) environment. We analyzed variability and differences in plant gas exchange in relation to important abiotic site parameters and the species. Assimilation, stomatal conductance, and intrinsic water use were applied as calibrating parameters for plant functional fingerprinting to …
Detection Of Varroa Mites From Honey Bee Hives By Smart Technology Var-Gor: A Hivemonitoring And Image Processing Device, Sedat Sevi̇n, Hi̇dayet Tutun, Seli̇me Mutlu
Detection Of Varroa Mites From Honey Bee Hives By Smart Technology Var-Gor: A Hivemonitoring And Image Processing Device, Sedat Sevi̇n, Hi̇dayet Tutun, Seli̇me Mutlu
Turkish Journal of Veterinary & Animal Sciences
The major honey bee parasite Varroa destructor reduces hive vitality and honey yields by preventing growth of heathy bees and causes drastic loss in apiculture. Therefore, mite infestation in honey bee needs to be constantly controlled by beekeepers. To minimize this loss, a system called Var-Gor has been developed with the aim of controlling Varroa mite infestation before/just after entering the hive instead of the late period. Var-Gor is a hive entrance attachable device box consist of bee passage tunnels (width: 25 mm, height: 15 mm, and depth: 50 mm), autofocus detection camera combined with interface (process sensor: IV-HG10) and …
Effects Of Different Selection Strategies On Subsequent Breeder Performance, Slaughter,And Carcass Traits Of Japanese Quail, Sohail Ahmad, Jibran Hussain, Hafiz Muhammad Ishaq, Athar Mahmud, Shahid Sherzada, Muhammad Usman, Abdur Rehman, Muhammad Zaid
Effects Of Different Selection Strategies On Subsequent Breeder Performance, Slaughter,And Carcass Traits Of Japanese Quail, Sohail Ahmad, Jibran Hussain, Hafiz Muhammad Ishaq, Athar Mahmud, Shahid Sherzada, Muhammad Usman, Abdur Rehman, Muhammad Zaid
Turkish Journal of Veterinary & Animal Sciences
The present study evaluated the effect of different selection strategies in four closebred flocks (CBF) at three ages on subsequent breeder performance and carcass traits. A total of 540 Japanese quails already selected for higher body weight from four CBF (Major, Kaleem, Saadat, and Zahid) at three ages (10, 12, and 14 weeks) were subjected to 3 selection strategies (i.e. pedigree, mass selection, and randombred control). In pedigree selection, 108 birds with higher body weight were selected with full pedigree record whereas, in the mass selection, 324 birds with higher body weight were selected to be the parents of the …
Effect Of Egg Weight On Development, Bone Morphology, And Breast Muscle Histology Of Embryos From Fast-And Slow-Growing Strains, Mojtaba Vafaeinia, Gamze Turgay İzzetoğlu, Zi̇şan Servet Yalçin
Effect Of Egg Weight On Development, Bone Morphology, And Breast Muscle Histology Of Embryos From Fast-And Slow-Growing Strains, Mojtaba Vafaeinia, Gamze Turgay İzzetoğlu, Zi̇şan Servet Yalçin
Turkish Journal of Veterinary & Animal Sciences
The present study aimed to determine the impact of egg weight on embryonic development, breast muscle histology, and bone morphology of fast- and slow-growing embryos and chicks. For this purpose, total 192 eggs from fast-(Ross 308) (FG) and slow-growing (Hubbard JA) (SG) broiler breeders were used. Eggs were classified as medium (64 ± 1 g, Megg) and heavy (72 ± 1 g, Hegg) eggs. At 18 days of incubation, egg weight loss, embryo weight, embryo length, breast width and length, yolk sac weight, and bone morphometric parameters were measured and breast muscle histology were studied. The same measurements were repeated …
Analysis Of Genetic Variation In An Important Pest, Tuta Absoluta, And Its Microbiota Witha New Bacterial Endosymbiont, Fariba Mehrkhou, Nurper Güz, Ertan Mahi̇r Korkmaz, Naci̇ye Sena Çağatay
Analysis Of Genetic Variation In An Important Pest, Tuta Absoluta, And Its Microbiota Witha New Bacterial Endosymbiont, Fariba Mehrkhou, Nurper Güz, Ertan Mahi̇r Korkmaz, Naci̇ye Sena Çağatay
Turkish Journal of Agriculture and Forestry
Tomato leaf miner is an aggressive and invasive pest that causes serious damage in tomato production, resulting in up to 100% yield losses during serious outbreaks. The management of tomato leaf miner with synthetic pesticides is difficult due to its leaf mining habit, short life span, high reproductive rates, and insecticide resistance problem. In this study, sequences of the mitochondrial cytochrome oxidase I (mtCOI) gene of Tuta absoluta specimens were analyzed and compared with the available COI sequence data members from GenBank. All the specimens of tomato leaf miner were clustered together in a single group with a high support …
Investigation Of Some Enthomopathogens As Biocontrol Agents Of Tinocallis (Sappocallis) Saltans (Nevsky, 1929) (Hemiptera: Aphididae), Eli̇f Tozlu, Göksel Tozlu, Recep Kotan, Önder Çalmaşur, Fati̇h Dadaşoğlu
Investigation Of Some Enthomopathogens As Biocontrol Agents Of Tinocallis (Sappocallis) Saltans (Nevsky, 1929) (Hemiptera: Aphididae), Eli̇f Tozlu, Göksel Tozlu, Recep Kotan, Önder Çalmaşur, Fati̇h Dadaşoğlu
Turkish Journal of Agriculture and Forestry
In Turkey, Tinocallis (Sappocallis) saltans (Nevsky) on Ulmus glabra Hudson was detected for the first time, and it was determined that it caused a considerable amount of damage. The study was conducted for the purpose of determining the usability of enthomopathogens in the control against it, while avoiding the negative effects of chemicals on the environment and human health. A total of 12 bacteria strains were tested for control efficacy and verified: Brevibacillus brevis (2), Bacillus thuringiensis (1), Bacillus thuringiensis subsp. kenyae (2), Bacillus thuringiensis subsp. kurstakii (2), Bacillus subtilis (1), Pseudomonas chlororaphis (1), Bacillus sphaericus GC subgroup D (1), …
Floristic Diversity Of Threatened Woodlands Of Kazakhstan Formed By Populus Pruinosa Schrenk, Tamara Stikhareva, Anna Ivashchenko, Vitaliy Kirillov, Alimzhan Rakhimzhanov
Floristic Diversity Of Threatened Woodlands Of Kazakhstan Formed By Populus Pruinosa Schrenk, Tamara Stikhareva, Anna Ivashchenko, Vitaliy Kirillov, Alimzhan Rakhimzhanov
Turkish Journal of Agriculture and Forestry
Climate aridization and increased anthropogenic pressure pose a severe threat to natural vegetation, including coastal plant communities. Those located in river basins of the desert zone of Central Asia are among the most vulnerable. Of the variety of ecosystems of the Ili-Balkhash region of Kazakhstan, forests dominated by a rare relict species Populus pruinosa Schrenk are of particular concern. This species occupies a very narrow ecological niche associated with river banks of the arid zone, which makes it very vulnerable to adverse natural and anthropogenic factors. The main objective of the research conducted was to fill the knowledge gap related …
Co2 Respiration Rates Of Einkorn Wheat At Different Temperature And Moisture Contents, Hakan Ki̇bar
Co2 Respiration Rates Of Einkorn Wheat At Different Temperature And Moisture Contents, Hakan Ki̇bar
Turkish Journal of Agriculture and Forestry
Temperature and grain moisture content are the main factors affecting grain spoilage in storage. These factors have a significant impact on the maintenance of quality, insect, fungus, and pest development. The main objective of this study was to determine the CO2 concentration and respiration rate of hulled einkorn wheat in different temperatures (5, 10, 15, 20, 25, 30, and 35 °C) and grain moisture contents (9.1%, 11.5%, 13.8%, and 15.9%, wet basis) by means of CO2 sensors. Multiple polynomial regression equation was developed to predict respiration as affected by temperature and grain moisture content. The CO2 concentrations and respiration rates …
Evaluation Of Powdery Mildew Resistance Of A Diverse Set Of Grape Cultivars And Testing The Association Between Powdery Mildew Resistance And Pr Gene Expression, Si̇nem Demi̇rel Aşci, Serpi̇l Tangolar, Kemal Kazan, Canan Yüksel Özmen, Mert Öktem, Umut Ki̇bar, Muhammad Mujtaba, Semi̇h Tangolar, Ali̇ Ergül
Evaluation Of Powdery Mildew Resistance Of A Diverse Set Of Grape Cultivars And Testing The Association Between Powdery Mildew Resistance And Pr Gene Expression, Si̇nem Demi̇rel Aşci, Serpi̇l Tangolar, Kemal Kazan, Canan Yüksel Özmen, Mert Öktem, Umut Ki̇bar, Muhammad Mujtaba, Semi̇h Tangolar, Ali̇ Ergül
Turkish Journal of Agriculture and Forestry
Powdery mildew caused by the fungal pathogen Erysiphe necator is a global disease that reduces yield and quality in grapes (Vitis vinifera L.). Most grape cultivars are susceptible to this pathogen and thus the selection of powdery mildew resistant cultivars is a major objective of grape breeding programs. In this study, we evaluated powdery mildew resistance of a diverse set of 28 commonly cultivated local and international V. Vinifera cultivars after artificial inoculations with Erysiphe necator. Of these, 7 cultivars were found to be resistant while 10 and 11, were found to be moderately resistant and susceptible to powdery mildew, …
The Comparison Of Botanical Composition And The Condition And Health Class Of Different Rangeland Sites In Forest Ecosystem, Emre Çomakli, Mehmet Keri̇m Güllap, Tuğba Çomakli, Adnan Bi̇lgi̇li̇
The Comparison Of Botanical Composition And The Condition And Health Class Of Different Rangeland Sites In Forest Ecosystem, Emre Çomakli, Mehmet Keri̇m Güllap, Tuğba Çomakli, Adnan Bi̇lgi̇li̇
Turkish Journal of Agriculture and Forestry
In this study conducted in Erzurum province's Oltu district Kırdağı location during 2015, 2016 and 2017 concerning the above forest, forest interior and forest edge rangeland sites, the botanical composition of rangeland sites, canopy coverage rate, rangeland condition scores, and comparison of the condition of rangeland and the health class were emphasized. According to the results, although the grass and legume rations in the forest edge rangeland was lower, the others families? ratio was higher than that of the other sites. Hence, it was determined that the ratio of canopy coverage rate was higher in the forest top rangelandsite compared …
Refining A Protocol For Somatic Embryogenesis And Plant Regeneration Of Phalaenopsis Amabilis Cv. Jinan From Mature Tissues, Reza Ghahremani, Shirin Dianati Daylami, Masoud Mirmasoumi, Naser Askari, Kourosh Vahdati
Refining A Protocol For Somatic Embryogenesis And Plant Regeneration Of Phalaenopsis Amabilis Cv. Jinan From Mature Tissues, Reza Ghahremani, Shirin Dianati Daylami, Masoud Mirmasoumi, Naser Askari, Kourosh Vahdati
Turkish Journal of Agriculture and Forestry
Phalaenopsis is one of the most remarkable commercial genera in Orchidaceae family. Using immature explants for tissue culture of orchid results in undesired characteristics such as genetic variation and long-lasting juvenility. In this study, we optimized a protocol for somatic embryogenesis of Phalaenopsis amabilis cv. Jinan, by using mature thin cell layer (TCL) explants to minimize immature explant limitations. We examined somatic embryogenesis from two types of mature explants, viz. leaf lTCL and flower stalk nodes tTCL at various concentrations of thidiazuron (TDZ) (0, 1, 2, and 3 mg L-1). The results demonstrated that lTCL explants cultured on medium supplemented …
Morphological And Molecular Characterization Of Croatian Carob Tree(Ceratonia Siliqua L.) Germplasm, Snjezana Bolaric, Ivna Dragojevic Müller, Ales Vokurka, Dubravka Vitali Cepo, Mirko Ruscic, Sinisa Srecec, Dario Kremer
Morphological And Molecular Characterization Of Croatian Carob Tree(Ceratonia Siliqua L.) Germplasm, Snjezana Bolaric, Ivna Dragojevic Müller, Ales Vokurka, Dubravka Vitali Cepo, Mirko Ruscic, Sinisa Srecec, Dario Kremer
Turkish Journal of Agriculture and Forestry
The results of morphological and AFLP variability of 120 plants of carob tree (Ceratonia siliqua L.), collected from 12 different locations (10 biological replicates for each location) on the coast and islands of the southern Croatian Adriatic, indicate high molecular and morphological variability among these carob populations. Analysis of molecular variance revealed significant differences among populations (26.07%; p < 0.001; a = 0.05). Out of the total variability, 22.49% refers to the variability among, and 77.51% within populations. UPGMA and STRUCTURE analysis based on AFLP genetic data clustered carob populations into three main groups representing three real genetic populations. UPGMA analysis based on morphological traits of leaves, pods, and seeds clustered carob populations into five groups. Mantel test showed significant correlation between morphological and genetic data (r = 0.58, p < 0.001; a = 0.05). According to the high genetic and morphological variability, the germplasm collection in the analysis could represent an important genetic pool for future breeding programmes. The goal of future research should be the conservation of C. siliqua in its natural habitats, and the establishment of gene banks of genetic resources with the purpose of creating new carob cultivars in breeding programmes.
The Effect Of The Metabolic Syndrome On The Histological Structure Of The Testes Tissue And The Sperm Morphology In The Rats, Ayşe Alkandurur, Şadi̇ye Kum
The Effect Of The Metabolic Syndrome On The Histological Structure Of The Testes Tissue And The Sperm Morphology In The Rats, Ayşe Alkandurur, Şadi̇ye Kum
Turkish Journal of Veterinary & Animal Sciences
In this study, we aimed to investigate the effect of metabolic syndrome on spermatozoon morphology and histological, histochemical, histomorphometric changes in the testes. Twenty-four male Sprague Dawley rats (60 day-olds) were used for this purpose. The rats in the control group were fed only water and rat food, while the rats in the experimental group were fed with water containing 20% D-fructose and rats food for 16 weeks with ad libitum. At the end of the experimental period, the testes and epididymis of the rats were removed. The testes were embedded in paraffin by performing the necessary histological procedure. In …
Effect Of Buck Existence On Some Reproductive Hormone Levels During Premating Inakkeçi Goats, Ali̇ Şenok, Erkan Pehli̇van, Fati̇n Cedden
Effect Of Buck Existence On Some Reproductive Hormone Levels During Premating Inakkeçi Goats, Ali̇ Şenok, Erkan Pehli̇van, Fati̇n Cedden
Turkish Journal of Veterinary & Animal Sciences
In this study, the effect of buck presence on serum progesterone, estrogen and FSH levels during the premating in 20 female Akkeçi goats was investigated. The goats were assigned to two groups as follows: control group (n = 10) and treatment group (n = 10). At the beginning of study, first blood samples (day 0) were taken from each goat kept isolated away from bucks at mating season. At day 13, female goats in treatment group were placed in a pen next to, that of bucks in order to provide buck effect. Second blood samples were taken from each does …
Earliness, Yield, And Fruit Quality Characteristics In Low Chill Peach-Nectarines: A Comparison Of Protected And Open Area Cultivation, Oğuzhan Çalişkan, Safder Bayazit, Kazi̇m Gündüz, Derya Kiliç, Sultan Göktaş
Earliness, Yield, And Fruit Quality Characteristics In Low Chill Peach-Nectarines: A Comparison Of Protected And Open Area Cultivation, Oğuzhan Çalişkan, Safder Bayazit, Kazi̇m Gündüz, Derya Kiliç, Sultan Göktaş
Turkish Journal of Agriculture and Forestry
This study was carried out to determine the effects of protected cultivation on the earliness, yield, and fruit quality characteristics of some lowchill peach-nectarine cultivars grown in the eastern Mediterranean region of Turkey. Phenological observations, yield parameters, and fruit quality characteristics were investigated. The chilling durations as CH (chilling hours), CU (chilling unit), and heat accumulations were determined. The `Astoria? cultivar reached the highest cumulative yield of 29.11 kg/tree and 38.72 t/ha, and fruit size was 131.89 g and 61.74 mm in protected cultivation. The CH and CU values under protected cultivation were 28% and 40% lower than in open …
Multiple Objective Optimization Of Air Assisted Liquid-Liquid Microextraction Combined With Solidified Floating Organic Drop Microextraction For Simultaneous Determination Of Trace Copper And Nickel, Fereshteh Islami-Bonab, Sanaz Sajedi-Amin, Saeed Mohammad Sorouraddin, Simin Maleknia, Abdolhossein Naseri
Multiple Objective Optimization Of Air Assisted Liquid-Liquid Microextraction Combined With Solidified Floating Organic Drop Microextraction For Simultaneous Determination Of Trace Copper And Nickel, Fereshteh Islami-Bonab, Sanaz Sajedi-Amin, Saeed Mohammad Sorouraddin, Simin Maleknia, Abdolhossein Naseri
Turkish Journal of Chemistry
he impact of rising levels of various heavy metals in the environment from multiple industrial, agriculture, domestic, and technological activities is of great concerns, as heavy metals cause serious health effects for both humans and wildlife. An effective and green chemistry procedure was used for simultaneous extraction of ultra-trace copper and nickel ions in natural waters (e.g. river and well waters) by air assisted liquid-liquid microextraction combined with solidified floating organic drop microextraction (AALLME-SFOD). The extraction of metal ions was conducted in a timescale of several minutes by conversion to metal chelates using sodium diethyldithiocarbamate (DDTC) as a chelating agent …
Turkish Perlite Supported Nickel Oxide As The Heterogeneous Acid Catalyst For A Series Of Claisen?Schmidt Condensation Reactions, Sakshi Kabra Malpani, Deepti Goyal, Stuti Katara, Ashu Rani
Turkish Perlite Supported Nickel Oxide As The Heterogeneous Acid Catalyst For A Series Of Claisen?Schmidt Condensation Reactions, Sakshi Kabra Malpani, Deepti Goyal, Stuti Katara, Ashu Rani
Turkish Journal of Chemistry
Potentially active and eco-friendly solid acid catalysts have been synthesized by loading different weight percentages (10, 15, and 50) of nickel oxide on thermally activated Turkish perlite through the deposition-precipitation method. Structural features of prepared catalysts were analyzed using BET surface area analysis, X-ray diffraction, scanning electron microscope (SEM), SEM-EDX, transmission electron microscopy (TEM), Fourier-transform infrared (FT-IR), pyridine adsorbed FT-IR, UV-Vis diffuse reflectance spectroscopy (DRS), and thermogravimetric analysis (TGA) techniques. Pyridine adsorbed FT-IR analysis confirmed the presence of the optimum amount of Bronsted acidic sites in a catalyst having 15 wt. % loading of nickel oxide, which was tested for …
Fibroin Nanofibers Production By Electrospinning Method, Derya Saltik Çi̇rki̇n, Meti̇n Yüksek
Fibroin Nanofibers Production By Electrospinning Method, Derya Saltik Çi̇rki̇n, Meti̇n Yüksek
Turkish Journal of Chemistry
Silk fibroin, which has many characteristic properties such as low inflammation reaction, biodegradation, suppleness, good antithrombogenic details, biocompatibility and high tensile strength is a very good candidate for biomedical applications. Electrospinning procures high surface area, porous, nanofiber dimension fiber generation, which is a plain method. An experimental study was carried out to produce nanofiber structure from silk fibroin by electrospinning and the electrospinning parameters for the spinning of uniform, continuous and silk fibroin fibers were optimized. As a result, the effect of variables of concentration, distance and applied voltage on the strength, thickness, surface structure, fiber diameter of nanomaterial was …
Hybrid Paper Sheets With Improved Barrier Properties, Çağla Söz
Hybrid Paper Sheets With Improved Barrier Properties, Çağla Söz
Turkish Journal of Chemistry
Hybrid paper sheets were prepared by applying a thin coating layer of cross-linked polydimethylsiloxane (PDMS) and inorganic particles onto Whatman Grade 1 filter paper substrates. Several coatings with different inorganic particle contents and types were applied onto the paper substrates to investigate the effect of the variation in the coating formulation on the (i) wetting, (ii) water barrier properties, (iii) air barrier properties, (iv) surface roughness, and (v) mechanical properties of the samples. It was revealed that the superhydrophobic hybrid paper sheets with significantly low air permeability and high water barrier properties could be prepared which is an indication that …
Structural Rearrangement Of Neisseria Meningitidis Transferrin Binding Protein A (Tbpa) Prior To Human Transferrin Protein (Htf) Binding, Gi̇zem Nur Duran, Mehmet Özbi̇l
Structural Rearrangement Of Neisseria Meningitidis Transferrin Binding Protein A (Tbpa) Prior To Human Transferrin Protein (Htf) Binding, Gi̇zem Nur Duran, Mehmet Özbi̇l
Turkish Journal of Chemistry
Gram-negative bacterium Neisseria meningitidis, responsible for human infectious disease meningitis, acquires the iron (Fe3+) ion needed for its survival from human transferrin protein (hTf). For this transport, transferrin binding proteins TbpA and TbpB are facilitated by the bacterium. The transfer cannot occur without TbpA, while the absence of TbpB only slows down the transfer. Thus, understanding the TbpA-hTf binding at the atomic level is crucial for the fight against bacterial meningitis infections. In this study, atomistic level of mechanism for TbpA-hTf binding is elucidated through 100 ns long all-atom classical MD simulations on free (uncomplexed) TbpA. TbpA protein underwent conformational …
Adsorptive Performance Of Mwcnts For Simultaneous Cationic And Anionic Dyes Removal; Kinetics, Thermodynamics, And Isotherm Study, Zaheer Aslam, Irfan Yousaf, Abdul Zahir, Adnan Akhtar
Adsorptive Performance Of Mwcnts For Simultaneous Cationic And Anionic Dyes Removal; Kinetics, Thermodynamics, And Isotherm Study, Zaheer Aslam, Irfan Yousaf, Abdul Zahir, Adnan Akhtar
Turkish Journal of Chemistry
Disposal of contaminated wastewater causes many serious problems especially when it gets mixed with the ground and seawater. It is, therefore, important to apply any remedial action to eradicate dangerous pollutants from the aqueous effluents and to avoid exposure of this wastewater to aquatic life. The research results discussed herein deal with the removal of Rhodamine B (RhB) and Congo Red (CR) dye from wastewater by using multi-walled carbon nanotubes (MWCNTs) as an adsorbent. Different factors like solid dosage, initial pH and concentration, time, and temperature were studied to understand the behavior and mechanism of adsorption. The maximum adsorption capacity …
Ultrasound Assisted Supramolecular Liquid Phase Microextraction Procedure For Sudan Iat Trace Level In Environmental Samples, Mustafa Soylak, Özgür Özalp, Furkan Uzcan
Ultrasound Assisted Supramolecular Liquid Phase Microextraction Procedure For Sudan Iat Trace Level In Environmental Samples, Mustafa Soylak, Özgür Özalp, Furkan Uzcan
Turkish Journal of Chemistry
A method based on supramolecular liquid phase microextraction has been developed for the preconcentration and determination of trace levels of Sudan I. 1-decanol and tetrahydrofuran were used as supramolecular solvent components. Trace levels of Sudan I were extracted into the extraction solvent phase at pH = 4.0 Analytical parameters such as pH value, supramolecular solvent volume, ultrasonication, centrifugation, model solution volume, matrix effects have been optimized. The limit of detection and the limit of quantification values for Sudan I were calculated as 1.74 μg L-1 and 5.75 μg L-1, respectively. In order to determine the accuracy of the method, addition …
Laccase Bound To Cryogel Functionalized With Phenylalanine For The Decolorization Oftextile Dyes, Işik Perçi̇n Demi̇rçeli̇k, Yusuf Doruk Aracagök, Nesli̇han İdi̇l, Adi̇l Deni̇zli̇, Bo Mattiasson
Laccase Bound To Cryogel Functionalized With Phenylalanine For The Decolorization Oftextile Dyes, Işik Perçi̇n Demi̇rçeli̇k, Yusuf Doruk Aracagök, Nesli̇han İdi̇l, Adi̇l Deni̇zli̇, Bo Mattiasson
Turkish Journal of Chemistry
In this study, amino acid functionalized poly(2-hydroxyethyl methacrylate-N-methacrylolyl-l-phenylalanine) [PHEMAPA] cryogel discs were prepared. In this respect, phenylalanine containing N-methacryloyl-(L)-phenylalanine methyl ester (MAPA) was polymerized with 2-hydroxyethyl methacrylate (HEMA) without requirement of any activation step. Laccase bound poly(2-hydroxyethyl methacrylate-N-methacryloyl-l-phenylalanine) [Lac-PHEMAPA] cryogel discs were applied for decolorization of Reactive Blue-247 (RB-247). The ability of Lac-PHEMAPA cryogel discs on dye decolorization was found to be as 90% in 2 h and even more within 4h. The decolorization activities of 86% and 73% were observed at relatively low (4°C) and high (60°C) temperatures, respectively. The effect of dye concentration on dye decolorization and 100% …
Antiinfective Properties Of Ursolic Acid-Loaded Chitosan Nanoparticles Againststaphylococcus Aureus, Fatemeh Ghasemzadeh, Ghasem Najafpour, Maedeh Mohammadi
Antiinfective Properties Of Ursolic Acid-Loaded Chitosan Nanoparticles Againststaphylococcus Aureus, Fatemeh Ghasemzadeh, Ghasem Najafpour, Maedeh Mohammadi
Turkish Journal of Chemistry
The present study aimed to synthesize ursolic acid-loaded chitosan nanoparticles (UA-Ch-NPs) as an antiinfective agent against 21 Staphylococcus aureus isolates. The UA-Ch-NPs were synthesized by a simple method and then characterized by TEM, FTIR, DLS-zeta potential, and XRD analyses. According to the characterization results, highly dispersed spherical nanoparticles with a mean diameter of 258 nm and a zeta potential of + 40.1 mV were developed. The antibacterial properties of UA-Ch-NPs were investigated and their inhibitory effect on biofilm formation was demonstrated by AFM. Finally, the expression levels of icaA and icaD were measured using real-time PCR. Results indicated that the …
A Survey On Surface Morphology Control Of Cross-Linked Poly(N-Vinylpyrrolidone)Polymer Particle Via Inverse Suspension Polymerization, Uğur Soykan, Sedat Çeti̇n
A Survey On Surface Morphology Control Of Cross-Linked Poly(N-Vinylpyrrolidone)Polymer Particle Via Inverse Suspension Polymerization, Uğur Soykan, Sedat Çeti̇n
Turkish Journal of Chemistry
This study mainly centers on the preparation and characterization of the cross-linked poly(NVP) microspheres by means of inverse suspension polymerization technique. The effect of the cross-linker content, the volumetric ratio of dispersed phase to suspension phase (DP/CP), agitation rate, and the reaction temperature on the characteristics of the microparticles were investigated meticulously using SEM, and the optimum preparation conditions were determined. The findings revealed that the morphological and surface properties of the obtained particles could be controlled easily by changing these parameters. Accordingly, the microparticles having the perfect spherical with smooth surface and good roundness, dumbbell-shaped, snowman besides dented, sunked …
Preparation Of G-Cuo Nps And G-Zno Nps With Mallow Leaves, Investigation Of Theirantibacterial Behavior And Synthesis Of Bis(Indolyl)Methane Compounds Under Solventfreemicrowave Assisted Dry Milling Conditions Using G-Cuo Nps As A Catalyst, Mi̇ne Sulak
Turkish Journal of Chemistry
In this study, biogenic copper and zinc oxide nanoparticles (G-ZnONPs and G-CuONPs) were synthesized by the green synthesis method using Malva parviflora L. (Millow) leaf extract and the obtained nanoparticles were characterized in detail with UVVis, FTIR, SEM, XRD. The antibacterial properties of the synthesized nanoparticles on gram-positive and gram-negative bacteria were investigated and it was found that the nanoparticles had high antimicrobial activity in the results of the experiments. With the obtained G-CuONPs, the synthesis of bis(indolyl)methanes with the "green" one-pot synthesis using microwave was achieved quickly and with high efficiency, and the thermal behavior of the obtained products …