Relevant bibliographies by topics / Furkan

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Furkan'

Author: Grafiati
Published: 4 June 2025
Last updated: 23 June 2025

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Journal articles on the topic "Furkan"

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Durucan, Furkan. "New records of Copidognathus (Acari: Halacaridae) from Antalya, Turkey." Persian Journal of Acarology 8, no. 3 (2019): 189–210. https://doi.org/10.22073/pja.v8i3.49588.

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Durucan, Furkan. "New records of marine water mites (Acari: Hydrachnidia, Pontarachnidae) from Turkey." Persian Journal of Acarology 10, no. 2 (2021): 145–53. https://doi.org/10.22073/pja.v10i2.65665.

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Durucan, Furkan. "Halacaridae (Acari: Prostigmata) of the Aegean Sea of Turkey (Çanakkale and Izmir)." Persian Journal of Acarology 10, no. 23 (2021): 341–46. https://doi.org/10.22073/pja.v10i3.67699.

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Durucan, Furkan. "Three new records and some juveniles of the genus Copidognathus (Acari, Halacaridae) from Türkiye." Persian Journal of Acarology 13 (October 15, 2024): 771–96. https://doi.org/10.22073/pja.v13i4.85812.

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Yamasaki, Hiroshi, and Furkan Durucan. "Echinoderes antalyaensis sp. nov. (Cyclorhagida: Kinorhyncha) from Antalya, Turkey, Levantine Sea, Eastern Mediterranean Sea." Species Diversity 23 (November 25, 2018): 193–207. https://doi.org/10.12782/specdiv.23.193.

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Yamasaki, Hiroshi, Durucan, Furkan (2018): Echinoderes antalyaensis sp. nov. (Cyclorhagida: Kinorhyncha) from Antalya, Turkey, Levantine Sea, Eastern Mediterranean Sea. Species Diversity 23: 193-207, DOI: 10.12782/specdiv.23.193
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Durucan, Furkan, Juan Carlos De La Paz, and David Hernández-Teixidor. "Halacaridae (Acari) from Tenerife (Canary Islands)." Persian Journal of Acarology 12, no. 1 (2023): 1–19. https://doi.org/10.22073/pja.v12i1.76823.

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Durucan, Furkan. "Contributions to the knowledge of the subfamily Simognathinae (Acari: Halacaridae) of Türkiye." Zootaxa 5570, no. 1 (2025): 151–68. https://doi.org/10.11646/zootaxa.5570.1.7.

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Durucan, Furkan (2025): Contributions to the knowledge of the subfamily Simognathinae (Acari: Halacaridae) of Türkiye. Zootaxa 5570 (1): 151-168, DOI: 10.11646/zootaxa.5570.1.7, URL: https://doi.org/10.11646/zootaxa.5570.1.7
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Chatterjee, Tapas, and Furkan Durucan. "A checklist of halacarid mites (Acari, Halacaridae) found from more than 900 m a.s.l. altitudes." Persian Journal of Acarology 10, no. 1 (2021): 29–40. https://doi.org/10.22073/pja.v10i1.63954.

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Chatterjee, Tapas, Durucan, Furkan (2021): A checklist of halacarid mites (Acari, Halacaridae) found from more than 900 m a.s.l. altitudes. Persian Journal of Acarology 10 (1): 29-40, DOI: 10.22073/pja.v10i1.63954
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Chatterjee, Tapas, and Furkan Durucan. "A checklist of halacarid and pontarachnid mites (Acari: Halacaridae and Pontarachnidae) found in seagrass habitats." Persian Journal of Acarology 11, no. 2 (2022): 187–223. https://doi.org/10.22073/pja.v11i2.70790.

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Chatterjee, Tapas, Durucan, Furkan (2022): A checklist of halacarid and pontarachnid mites (Acari: Halacaridae and Pontarachnidae) found in seagrass habitats. Persian Journal of Acarology 11 (2): 187-223, DOI: 10.22073/pja.v11i2.70790
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Durucan, Furkan. "Two new genera, Limnohalacarus and Soldanellonyx (Acari: Halacaridae) in freshwater halacarid mites with additional new records from Turkey." Persian Journal of Acarology 9, no. 1 (2020): 1–11. https://doi.org/10.22073/pja.v9i1.57733.

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Durucan, Furkan (2020): Two new genera, Limnohalacarus and Soldanellonyx (Acari: Halacaridae) in freshwater halacarid mites with additional new records from Turkey. Persian Journal of Acarology 9 (1): 1-11, DOI: 10.22073/pja.v9i1.57733
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Dissertations / Theses on the topic "Furkan"

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Özkan, Furkan [Verfasser], and B. [Akademischer Betreuer] Kraushaar-Czarnetzki. "Investigation and Modeling of Heterogeneously Catalyzed G/L Reactions in Microreactors / Furkan Özkan. Betreuer: B. Kraushaar-Czarnetzki." Karlsruhe : KIT-Bibliothek, 2013. http://d-nb.info/1047383519/34.

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Titiz, Furkan Kaan [Verfasser], Doncker Rik W. [Akademischer Betreuer] De, and Sibylle [Akademischer Betreuer] Dieckerhoff. "A three-phase low-voltage grid-connected current source inverter / Furkan Kaan Titiz ; Rik W. de Doncker, Sibylle Dieckerhoff." Aachen : Universitätsbibliothek der RWTH Aachen, 2019. http://d-nb.info/1216040907/34.

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Titiz, Furkan Kaan Verfasser], Doncker Rik W. [Akademischer Betreuer] [De, and Sibylle [Akademischer Betreuer] Dieckerhoff. "A three-phase low-voltage grid-connected current source inverter / Furkan Kaan Titiz ; Rik W. de Doncker, Sibylle Dieckerhoff." Aachen : Universitätsbibliothek der RWTH Aachen, 2019. http://d-nb.info/1216040907/34.

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Smith, Andrew W. T. "On the synthesis of furans and furan fatty acids." Thesis, Cardiff University, 2012. http://orca.cf.ac.uk/46353/.

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This thesis describes the use of silver nitrate and iodine to promote 5-endo-dig cyclisations in the synthesis of furans. The oxidation of furylethanols will be discussed as will methods to synthesise furylacetic acids. The total synthesis of a natural product, Plakorsin B will be described along with the total synthesis of the furan fatty acids F5 and F6 as well as giving an overview of their proposed role in Nature. Finally, a new methodology for methylation of halogenated heterocycles will be discussed.
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Marotta, Angela. "Résines thermodurcissables et nanocomposites époxydes renouvelables à base de furanne pour les applications de revêtement." Thesis, Université Côte d'Azur (ComUE), 2019. http://www.theses.fr/2019AZUR4003/document.

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La recherche scientifique concernant les polymères biosourcés augmente rapidement pendant les dernières années, poussée par des croissantes préoccupations écologiques et économiques, ainsi que par l'incertitude sur la disponibilité future de ressources pétrochimiques limitées. Durabilité est un mot-clé de ce processus. Dans ce cadre, des produits respectueux de l'environnement, y compris des molécules et des additifs eco-compatibles, sont maintenant recherchés pour remplacer les polymères à base de pétrole par ceux dérivés de matières premières naturelles.Les résines époxydes sont des polymères thermodurcissables très polyvalents, extrêmement résistants à la corrosion, à l'humidité et aux produits chimiques, avec une bonne force d'adhérence à la plupart des matériaux et un faible retrait lors du durcissement. En raison de leurs températures de transition vitreuse élevées et de leur excellente résistance mécanique, les résines époxydes sont largement utilisées dans une large gamme d'applications, telles que l'électronique, les adhésifs structuraux, les composites pour l'aérospatiale et les revêtements protecteurs.Actuellement, plus des deux tiers des résines époxydes sont à base de diglycidyl éther de Bisphénol A. Dans cette industrie, la tendance à remplacer les matériaux dérivés du pétrole par des matériaux biosourcés est également liée à la nécessité de remplacer le bisphénol A (BPA), une molécule controversée, reconnu comme un perturbateur endocrinien et une substance reprotoxique. En particulier en application comme revêtement, l'utilisation de BPA présente un risque pour les utilisateurs d'aliments et de boissons conditionnés dans des récipients traités avec des résines époxydes. Les effets de la contamination du corps humain causée par le BPA sont le diabète, maladies cardiovasculaires, modification des enzymes hépatiques et les lésions de l'appareil reproducteur. Pour ces raisons, cette molécule a été interdite dans de nombreux pays pour la fabrication de produits pour enfants, ainsi qu'en France et au Canada de tous les matériaux en contact direct avec les aliments. La nécessité de développer de nouvelles résines époxy est donc urgente.Les molécules bio-dérivées développées depuis maintenant présentent des structures chimiques les plus diverses, chacune d’elles produisant des propriétés différentes des polymères finaux. Les caractéristiques particulières des résines époxydes sont liées à la structure aromatique de ses composants. Les molécules aromatiques présentes dans les matières premières naturelles proviennent principalement de la lignine, un des principaux constituants des parois cellulaires naturelles. Cependant, pour extraire des fragments aromatiques de la lignine, des procédés difficiles et consommateurs d’énergie sont nécessaires. Un substitut précieux des molécules aromatiques, facilement récupérables du glucose, sont les molécules furaniques ; leur validité a été étayée par plusieurs études.À la lumière de ce qui précède, les travaux présentés ici sont focalisés sur la production de résines époxyde à base de furane comme substitut potentiel de DGEBA dans l’industrie du revêtement de boîtes de conserve. Le cycle complet du matériau a été étudié : des synthèses de monomères époxydes furaniques ont été proposées, puis des thermodurcis époxydes ont été obtenus et caractérisés à la fois dans leurs propriétés chimiques et physiques (étude de la cinétique de durcissement, des propriétés mécaniques et thermiques). En outre, l’application des matériaux thermodurcissables époxydes proposés comme revêtement interne des boîtes de conserve a été testée<br>Research on bio-based polymers is rapidly increasing in last years, pushed by growing environmental and economic concerns, as well as by the uncertainty about future availability of finite petrochemical resources. Sustainability is a keyword in this process. In this frame, products that are respectful towards the environment, including eco-compatible building blocks and additives, are now researched to replace petroleum-based polymers with those derived from naturally occurring feedstocks. Epoxy resins are very versatile thermosetting polymers, extremely resistant to corrosion, moisture and chemicals, with good adhesive strength toward most materials (wettability) and low shrinkage upon curing. Due to their high glass transition temperatures and excellent mechanical strength, epoxy resins are widely employed in a broad range of applications, such as electronics, structural adhesives, aerospace composites and protective coatings. More than two-thirds of epoxy resins nowadays are based on diglycidyl ether of bisphenol A. In this industry the trend to replace petrol-derived materials with bio-based ones is related also to the necessity to substitute the Bisphenol A (BPA), a controversial building block recognized as an endocrine disrupter and reprotoxic substance. In particular in application as coating, the use of BPA results in hazard for customers of food and beverage products packed into containers treated with epoxy resins. The effects of human body contamination caused by BPA are diabetes, cardiovascular diseases, altered liver enzymes and reproductive apparatus damages. For these reasons, this molecule has been banned in many countries for the manufacturing of child products, and in France and Canada from all the materials in direct contact with food. The necessity to develop new epoxy resins results therefore urgent.Bio-derived molecules since now developed show the most various chemical structure, each of them producing different properties of final polymers. Peculiar characteristic shown by epoxy resins are related to the aromatic structure of its components. Aromatic molecules present in natural feedstock are mainly derived from lignin, one of the principal constituents of natural cell walls. However, to extract aromatic moieties from lignin, difficult and energy consuming processes are required. A valuable replacement of aromatic molecules, easily recoverable from glucose, are furanic molecules; their validity has been supported by several studies. In the light of the above, the work here presented is focused on production of furanic bio-based epoxy resins as potential substitute of DGEBA in can coating industry. The complete cycle of the material has been studied: the synthesis of furanic epoxy monomers and epoxy thermosets, the characterization of their chemical and physical properties (study of curing kinetics, mechanical and thermal properties). Furthermore, the application of bio-based epoxy thermosets as cans internal lining has been evaluated. Experimental results demonstrated that the obtained resins have good potential to be proposed as good alternatives to the traditional BPA-containing epoxy resins
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Pedersoli, Susimaire. "Estudos sobre a síntese de furanoeliangolidos a partir da reação de Diels-Alder." Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/59/59138/tde-07122006-103949/.

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O objetivo deste trabalho foi iniciar o estudo de uma nova metodologia sintética para a obtenção do sistema 11-oxabiciclo[6.2.1]undecano, o esqueleto estrutural básico de uma classe de produtos naturais conhecidos como furanoeliangolidos. A abordagem sintética proposta envolveria a formação de um composto bicíclico através da reação de Diels-Alder com derivados de furano, seguida pela formação de um hexanel e, finalmente, ruptura de uma ligação central para formação do sistema macrocíclico. Além disso, a reação de Diels-Alder entre derivados de furano e acetileno dará origem a compostos que apresentam como esqueleto estrutural o sistema 7-oxabiciclo[2.2.1]heptano, que podem ser utilizados como material de partida para a síntese de diversos produtos naturais. Iniciamos este estudo com a reação de Diels-Alder entre o 3,4-dimetoxi-2-metil furano e o bromopropiolato de metila, onde foi obtido o produto 85, que após algumas modificações deu origem ao composto 92. Entretanto, após inúmeras tentativas não conseguimos transformar o composto 92 no triciclo desejado. Para evitar essas transformações que se mostraram problemáticas, resolvemos estudar a reação de Diels-Alder entre derivados de furano e benzoquinonas 2,5-dissubstituídas, que dará origem aos adutos devidamente funcionalizados para serem transformados no derivado do sistema 11-oxabiciclo [6.2.1]undecano. No entanto, após o estudo dessas reações de cicloadição, observamos que elas têm o equilíbrio fortemente deslocado no sentido dos materiais de partida. Por esse motivo, a continuidade desta metodologia sintética mostrou ser inviável. Iniciamos então, um estudo da reação de Diels-Alder entre os diverso derivados de furanos e acetilenos. Após o estudo dessas reações de Diels-Alder foi possível verificar que a maioria dos adutos derivados dos furanos é instável no meio reacional. Os melhores resultados obtidos nessas reações de Diels-Alder foram usando o acetilenodicarboxilato de dimetila como dienófilo. Os adutos obtidos são intermediários importantes e bem funcionalizados, que podem ser utilizados na continuidade do estudo de desenvolvimento de nova metodologia sintética para a obtenção do sistema 11-oxabiciclo[6.2.1]undecano<br>The aim of this work was to start the study of a new methodology to synthesize the 11-oxabicycle[6.2.1]undecane system, the main carbon skeleton of the furanoheliangolides. The proposed synthetic approach involves the preparation of a bicyclic compound through a Diels-Alder reaction with furan derivatives, followed by formation of a six membered ring and, finally, cleavage of the central bond to obtain of the macrocyclic system. The Diels-Alder reaction between furan and acetylene derivatives gives a compound with the 7-oxabicyclico[2.2.1]heptane system, that is a potential starting material for the synthesis of several natural products. We started this study with the Diels-Alder reaction between the 3,4-dimethoxy-2-methylfuran and methyl bromopropiolate, and obtained the product 85 that after some modifications furnished the compound 92. However, after various attempts we were unable to convert the compound 92 into the desired tricycle. We have then decided to study the Diels-Alder reaction between furan and 2,5-disubstituted benzoquinone derivatives, that could furnish the adducts properly functionalized to be transformed in the 11-oxabicyclico[6.2.1]undecane system. However, we observed that the equilibrium is strongly shifted towards the starting materials in these cycloaddition reactions. This methodology has thus showed to be impracticable. As a third alternative, we affected the study the Diels-Alder reaction between the furans derivatives and the acetylenes. The adducts obtained present 7-oxabicyclico[2.2.1]heptane system that could be used to synthesizes of structural skeleton of furanoheliangolide.
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Lee, Robert J. "A biosynthetically-inspired synthetic route to substituted furans and its application to the total synthesis of the furan fatty acid F5." Thesis, Loughborough University, 2018. https://dspace.lboro.ac.uk/2134/36252.

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Dietary fish oil supplementation has long been shown to have significant health benefits, largely stemming from the anti-inflammatory activity of the ω-3 and ω-6 polyunsaturated fatty acids (PUFAs) present in fish oils. The anti-inflammatory properties of these fatty acids has been linked to beneficial health effects, such as protecting the heart, in individuals consuming diets rich in fish, or supplemented with fish oils. These effects are highly notable in the Māori people native to coastal regions of New Zealand; the significantly lower rates of heart problems compared to the inland populous has been attributed to the consumption of the green lipped mussel Perna Canaliculus. Commercially available health supplements based on the New Zealand green lipped mussel include a freeze-dried powder and a lipid extract (Lyprinol®), the latter of which has shown anti-inflammatory properties comparable to classical non-steroidal anti-inflammatory drugs (NSAIDs) such as Naproxen. GCMS analysis of Lyprinol by Murphy et al. showed the presence of a class of ω-4 and ω-6 PUFAs bearing a highly electron rich tri- or tetra-alkyl furan ring, which were designated furan fatty acids (F-acids). Due to their instability, isolation of F-acids from natural sources cannot be carried out and a general synthetic route toward this class of natural products was required. To accomplish this, the biosynthesis of F-acids was mimicked by utilising an oxidation of 1,3-dienes, followed by a dehydration/aromatisation to generate the heterocyclic furan ring. Singlet oxygen was chosen as the means of oxidising the conjugated dienes giving endoperoxides. To mimic the biological aromatisation of the peroxide intermediates the Appel reagent was chosen and, in a novel application of the reagent, was exploited as a mild, metal free method of dehydrating the cyclic peroxides to their corresponding furans. The biomimetic furan synthesis was applied toward a selection of 1,3-diene substrates bearing a range of pre-installed functionalities and substitution patterns including alkyl, aryl, alkenes, cyclopropyl rings, silyl ethers, and esters, alongside being applied to the total synthesis of the furan fatty acid F5. A brief exploration of the possibility of performing the aromatisation reaction under catalytic conditions was carried out, to determine whether endoperoxides could be converted to furans without needing a stoichiometric quantity of Appel reagent, by harnessing a catalytic quantity of triphenylphosphine oxide and regenerating the active P(V) species via reaction with oxalyl chloride. Furthermore, an optimisation study was carried out using a simple design of experiments procedure to ascertain the ideal conditions for carrying out the Appel-type dehydration of endoperoxides. Finally, the scope of the reaction sequence was expanded to be performed in a continuous flow reactor, with telescoping of the singlet oxygen diene oxidation and Appel-type aromatisation to increase oxidation yields and to omit the requirement for isolation of peroxide intermediates, and was applied to the synthesis of a selection of 2,5-diaryl furan motifs.
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Dias, José Manuel Soares. "Implementação e validação de um método cromatográfico para a detecção e quantificação de furano em feijão enlatado." Bachelor's thesis, Universidade Técnica de Lisboa. Faculdade de Medicina Veterinária, 2009. http://hdl.handle.net/10400.5/1569.

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Dissertação de Mestrado em Segurança Alimentar<br>O furano tem sido detectado em diversos alimentos em particular nos que são sujeitos a tratamento térmico durante o processo de preparação industrial. É considerado um composto potencialmente cancerígeno para seres humanos, pelo que a sua presença nos alimentos se tornou uma questão de segurança alimentar. Desde 2007 que a Autoridade Europeia para a Segurança Alimentar tem procurado recolher o maior número de informação possível, relativa à presença de furano nos alimentos. Neste trabalho utilizou-se a técnica de Cromatografia Gasosa de Espaço de Cabeça acoplada a um espectrómetro de massa (HS-GC/MS) para avaliar os teores de furano em feijões enlatados. Foram analisadas 10 amostras (latas) independentes, seleccionadas aleatoriamente no mercado, de três marcas comercializadas em Portugal. A concentração média obtida foi de 3,27 ng/g, numa gama que variou entre 2,61 e 4,45 ng/g. Os limites de detecção calculados foram de 0,80 ng/g para as amostras PD, 1,26 ng/g para as amostras C e de 0,58 ng/g para as amostras F. Os limites de quantificação foram, respectivamente, de 2,44, 3,82 e 1,77 ng/g. Os coeficientes de variação do método foram inferiores a 10% e a percentagem de recuperação foi de 95%. Para estudar o efeito do tratamento térmico doméstico, foram também, analisadas amostras aquecidas à temperatura de 80°C, tendo-se verificado um aumento significativo na concentração do furano detectada. Comparou-se ainda a concentração média do furano obtido nos feijões em lata com a concentração média para o mesmo tipo de feijão conservado em frascos de vidro, tendose constatado não existirem diferenças significativas.<br>ABSTRACT - Furan has been detected in various foods in particular in those that suffer heat-treatment during industrial preparation. It is considered a potentially carcinogenic compound to humans, so its presence in foods has become a matter of food security. Since 2007, the European Food Safety Authority has thought to collect as much information as possible on the presence of furan in food. In this work we used the technique of head space gas chromatography coupled with mass spectrometry HS-GC/MS to assess the levels of furan in canned beans. We analyzed 10 independent samples (cans), randomly selected on the market, and from three brands sold in Portugal. The average concentration obtained was 3.27 ng/g, with a range that varied between 2.61 and 4.45 ng/g. The detection limits calculated were 0.80 ng/g for samples PD, 1.26 ng/g for samples C and 0,58 ng/g for samples F. The limits of quantification were, respectively, 2.44, 3.82 and 1,77 ng/g. The coefficients of variation of the method were less than 10% and the recovery was 95%. To study the effect of house heat treatment, samples heated at 80°C were also analyzed, and there have been a significant increase in the concentration of detected furan. It is also compared the average concentrations of furan obtained from canned beans with the average concentrations for the same type of beans stored in glass bottles. No significant differences were found.
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Furian, Robert [Verfasser]. "Wissensbasierte Softwareumgebung im Konstruktionsprozess / Robert Furian." Aachen : Shaker, 2014. http://d-nb.info/1058315722/34.

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Wang, Yamin. "Novel synthetic routes to furan fatty acids and their analogues." Thesis, Loughborough University, 2016. https://dspace.lboro.ac.uk/2134/23486.

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Furan and its derivatives are commonly found in numerous compounds such as natural products, polymers and medicines. The furan ring system is not only the core component to many natural products, but also serves as a key synthetic intermediate to access other more complex molecules. Among furan derivatives, furan fatty acids (F-acids) are an important class of natural products which are widely distributed in nature, and occupy a unique place in the field of medicinal chemistry because of their potent biological and pharmacological activity. This thesis examines the development of novel approaches towards highly substituted furans, with the ultimate goal of applying novel and high efficiency methods to the synthesis of F-acids and their derivatives. The first total synthesis of a natural product, an F-acids metabolite originally isolated from shark (Lamna ditropis) bile, was accomplished by the utilisation of an iodocyclisation of the corresponding 3-alkyne-1,2-diol to construct the furan nucleus; the synthetic route will be discussed in this thesis. Through the study of palladium-catalysis of a formal cyclisation to construct the furan ring system, a general route to access different F-acids has been developed. Splitting the F-acids into relatively simple fragments allows for easy preparation and modification of two fragments to produce a range of F-acids. The synthetic route was then applied to the formal synthesis of a natural product, F-acid F6. After optimisation of the synthetic route, total synthesis of F-acids F4, F6 and their analogues was accomplished.
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Books on the topic "Furkan"

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Mirzabeyoğlu, Salih. Furkan: Lûgat-ı salihûn. İbda Yayınları, 2006.

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Mirzabeyoğlu, Salih. Furkan: Lûgat-ı salihûn. İbda Yayınları, 2006.

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Sezgin, M. Fuad. Günümüz bilgileri ışığında Kur'an'ın tasdik ayetlerinin yorumu: İslam ulemasının müslümanlardan gizledǧ̆i gerçek : Kur'anda tasdik edilen ehli kitabın (Yahudilerin) elindeki kitap, Furkan veya Mişna. Papirüs Yayın Dağıtım, 1994.

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Arx, Johannes von. Dampfbahn Furka-Bergstrecke: Abenteuer Furka. Dampfbahn Furka-Bergstrecke, 2000.

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Tollison, Courtney L. Furman University. Arcadia Publishing, 2004.

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1935-1998, Furlan Gianluigi, and Galleria d'arte sagittaria, eds. Giannino Furlan architetto. Centro iniziative culturali Pordenone, 2001.

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Bisher, Furman. The Furman Bisher collection. Taylor Pub., 1989.

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Campolin, Luciano. Giannino Furlan: Architetto a Pordenone. Giavedoni editore, 2021.

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Maghet, Guido. El scuviarzimi furlan: Scoprirmi friulano. Hermagoras-Verl., 1991.

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L, Thompson Tommy, and Furman University, eds. Furman University: A timeless place. Harmony House, 1998.

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Book chapters on the topic "Furkan"

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Arican, Yagmur Emre. "Furan." In Food Safety. Nobel Tip Kitabevleri, 2024. http://dx.doi.org/10.69860/nobel.9786053358787.13.

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Furan, a volatile compound with a strong etheric odor and flammability, is a crucial component in the industrial context, producing various chemicals such as pyrrole, thiophene, tetrahydrofuran, pharmaceuticals, and pesticides. It is also used as a solvent for resins in organic synthesis and is present in many foods, including carbohydrates, unsaturated fatty acids, carotenoids, vitamin C, and amino acids, due to thermal processes and high-energy radiation used in the food manufacturing industry. Furan and its derivatives are utilized in the refining of tobacco and as flavoring agents in specific products. Furan can be generated and emitted into the environment due to human activities like combustion, fire, exhaust, and cigarette smoke. When heated, it enhances oxidative processes in lipids and proteins, impacting free radicals and antioxidant defense. Furan is a toxic substance that can cause skin irritation, burns, headaches, dizziness, shortness of breath, and loss of consciousness. Its vapor is narcotic and acts as a central nervous system depressant, leading to pulmonary edema and potentially death. Both acute oral or dermal exposure and chronic exposure are linked to significant toxicity. Furan is present in both professionally produced and handmade meals, contributing to their taste. In adults, susceptibility to furan exposure is due to coffee, while grains are considered the largest contributor to furan exposure in children and adolescents. High concentrations of furans are found in roasted coffee, heat-treated foods, and crispy and dry products like toast or bread crusts. Health institutions are apprehensive about furan’s deleterious characteristics, as studies conducted on rodents have demonstrated its toxicity primarily impacts the liver.
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Mogol, Burçe Ataç, and Vural Gökmen. "Furan." In Chemical Hazards in Thermally-Processed Foods. Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-8118-8_4.

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Lide, David R. "Furan." In Handbook of Organic Solvents. CRC Press, 2024. http://dx.doi.org/10.1201/9781003575191-249.

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Howard, Philip H., Gloria W. Sage, William F. Jarvis, and D. Anthony Gray. "Furan." In Handbook of Environmental Fate and Exposure Data For Organic Chemicals, Volume II. CRC Press, 2023. http://dx.doi.org/10.1201/9781003418863-41.

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Gooch, Jan W. "Furan." In Encyclopedic Dictionary of Polymers. Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_5360.

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Gooch, Jan W. "Furan Resin." In Encyclopedic Dictionary of Polymers. Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_5361.

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Gooch, Jan W. "Furan Prepreg." In Encyclopedic Dictionary of Polymers. Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_5362.

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Hargittai, István. "Árpád Furka." In Mosaic of a Scientific Life. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-34766-6_9.

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Guenther, Helmut. "Furan in Coffee." In Coffee. Wiley-Blackwell, 2012. http://dx.doi.org/10.1002/9781119949893.ch18.

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Demaison, J. "413 C4H4O Furan." In Asymmetric Top Molecules. Part 2. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-10400-8_161.

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Conference papers on the topic "Furkan"

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Gates, Joseph J., Hira S. Ahluwalia, and Norman J. Hirschey. "Proof Testing Furan Equipment While Saving Money." In CORROSION 2001. NACE International, 2001. https://doi.org/10.5006/c2001-01415.

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Abstract Lab or coupon testing is the initial step that often suggests furan is the correct material for a specific service. This paper will describe historical problems associated with furan equipment fabrication and outline proof tested solutions. Proof testing has two definitions in this paper; first, meaning proof by trial testing and second, the step by step procedure used by the fabricator to assure each phase of manufacture is acceptable. By detailing the proper inspection testing (proof testing) during &amp; after fabrication of furan and finally tallying the costs of failure for each phase, short &amp; long term savings will be shown.
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Dias, Olavo C. "Furan Flare Piping Rupture Analysis." In CORROSION 1997. NACE International, 1997. https://doi.org/10.5006/c1997-97350.

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Abstract A 12 inch (305mm) diameter FRP piping section containing Furan resin disintegrated after four years of service in a vapor relief system. External inspection of the flare stack conducted just three months earlier revealed no obvious problems. Also, during the ensuring period, there were no upsets in temperature, pressure or process operations. A detailed investigation determined that excessive mechanical stresses at the unsupported 45 degree elbow joints led to strain corrosion and subsequent crumbling of the FRP material. The remainder of the piping and flanges were in good condition. Steps necessary to minimize future problems and the need for industry wide design, inspection and maintenance guidelines are discussed.
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Pribulova, Alena, Peter Futas, Patrik Fedorko, Maria Mihalikova, and Maria Mihalikova. "THE EFFECT OF THE AMOUNT OF BINDER ON THE PROPERTIES OF BRIQUETTES PREPARED FROM FOUNDRY DUST." In 24th SGEM International Multidisciplinary Scientific GeoConference 24. STEF92 Technology, 2024. https://doi.org/10.5593/sgem2024/4.1/s18.41.

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Briquetting is the pressing of dusty materials into pieces of the same shape and size. Briquetting can be done without a binder or with the addition of a binder to the briquetting mixture. Briquettes can have any shape, but the most common is the shape of a cylinder. The briquettes must be strong enough to eliminate the possibility of damage during transport and must be strong enough even at high temperatures. The briquettes have a regular shape, have the same weight, are more durable and easier to transport. They are ecologically safe and it is possible to use carbon filling in briquettes to activate the process in metallurgical furnaces. Among the most important properties of briquettes are compressive strength and resistance to abrasion when falling. The briquettes were prepared from 4 types of dust from different parts of the foundry process. Dust from blasting castings cast into bentonite molding compounds was used. It is the dust caught in the catch box under the cyclone of the separator (B). The second dust (Bmp) was separated magnetic component of dust B. Dust (GF) captured in the collection reservoirs from the filter devices from the pendulum grinders. Dust (BF) from blasting castings cast in furan mixtures. Dust (G/Bmp) was a mixture of dust G and Bmp in a 2:1 ratio, and dust (G/BF) was a mixture of dusts G + BF in a 2:1 mass ratio. Bentonite and molasses were used as binders. The best properties were obtained from briquettes prepared from dust from grinding castings (G) and from a mixture of dust from grinding castings with dust from blasting castings cast into furan molds (G/BF)
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Lekova, Anna, Paulina Tsvetkova, Mayiana Mitevska, and Teodora Medneva. "Furhat PsychScreen Framework: Streamlining Robot-Assisted Psychological Screening Implementation." In 2024 International Conference on Software, Telecommunications and Computer Networks (SoftCOM). IEEE, 2024. http://dx.doi.org/10.23919/softcom62040.2024.10721865.

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Boova, A. A. "Decorative Protective Flooring Systems." In CORROSION 1990. NACE International, 1990. https://doi.org/10.5006/c1990-90346.

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Abstract Today's flooring systems are decorative as well as protective and are available in a multitude of colors, textures and thicknesses. Concrete sealers, hi-build compounds, monolithic toppings, polymer concretes, brick and tile will be presented. Many of these systems are formulated from such resins as acrylics, epoxies, furans, polyesters, urethanes and vinyl esters. Various attributes of the respective systems are presented.
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Kessler, Travis, Eric R. Sacia, Alexis T. Bell, and J. Hunter Mack. "Predicting the Cetane Number of Furanic Biofuel Candidates Using an Improved Artificial Neural Network Based on Molecular Structure." In ASME 2016 Internal Combustion Engine Division Fall Technical Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/icef2016-9383.

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The next generation of alternative fuels is being investigated through advanced chemical and biological production techniques for the purpose of finding suitable replacements to diesel and gasoline while lowering production costs and increasing process yields. Chemical conversion of biomass to fuels provides a plethora of pathways with a variety of fuel molecules, both novel and traditional, which may be targeted. In the search for new fuels, an initial, intuition-driven evaluation of fuel compounds with desired properties is required. Due to the high cost and significant production time needed to synthesize these materials at a scale sufficient for exhaustive testing, a predictive model would allow chemists to preemptively screen fuel properties of potentially desirable fuel candidates. Recent work has shown that predictive models, in this case artificial neural networks (ANN’s) analyzing quantitative structure property relationships (QSPR’s), can predict the cetane number (CN) of a proposed fuel molecule with relatively small error. A fuel’s CN is a measure of its ignition quality, typically defined using prescribed ASTM standards and a cetane testing engine. Alternatively, the analogous derived cetane number (DCN), obtained using an Ignition Quality Tester (IQT), is a direct measurement alternative to the CN that uses an empirical inverse relationship to the ignition delay found in the constant volume combustion chamber apparatus. DCN data points acquired using an IQT were utilized for model validation and expansion of the experimental database used in this study. The present work improves on an existing model by optimizing the model architecture along with the key learning variables of the ANN and by making the model more generalizable to a wider variety of fuel candidate types, specifically the class of furans and furan derivatives, by including specific molecules for the model to incorporate. The new molecules considered include tetrahydrofuran, 2-methylfuran, 2-methyltetrahydrofuran, 5,5′-(furan-2-ylmethylene)bis(2-methylfuran), 5,5′-((tetrahydrofuran-2-yl)methylene)bis(2-methyltetrahydrofuran), tris(5-methylfuran-2-yl)methane, and tris(5-methyltetrahydrofuran-2-yl)methane. Model architecture adjustments improved the overall root-mean-squared error (RMSE) of the base database predictions by 5.54%. Additionally, through the targeted database expansion, it is shown that the predicted cetane number of the furan-based molecules improves on average by 49.21% (3.74 CN units) and significantly for a few of the individual molecules. This indicates that a selected subset of representative molecules can be used to extend the model’s predictive accuracy to new molecular classes. The approach, bolstered by the improvements presented in this paper, enables chemists to focus on promising molecules by eliminating less favorable candidates in relation to their ignition quality.
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Lai, Zeqi, Y. Charlie Hu, Yong Cui, Linhui Sun, and Ningwei Dai. "Furion." In MobiCom '17: The 23rd Annual International Conference on Mobile Computing and Networking. ACM, 2017. http://dx.doi.org/10.1145/3117811.3117815.

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HENRIQUE FREIRE ARAUJO, LUIZ, José Augusto Rosário Rodrigues, FABIO NASARIO, and Paulo José Samenho Moran. "Biotransformation of Biomass Furan Derivatives." In XXIV Congresso de Iniciação Científica da UNICAMP - 2016. Galoa, 2016. http://dx.doi.org/10.19146/pibic-2016-51633.

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KEMPPAINEN, JOSH, IVAN GALLEGOS, AARON KRIEG, and GREGORY ODEGARD. "REACTIVE MOLECULAR DYNAMICS MECHANICAL PROPERTIES PREDICTION OF FURAN RESIN." In Proceedings for the American Society for Composites-Thirty Seventh Technical Conference. Destech Publications, Inc., 2022. http://dx.doi.org/10.12783/asc37/36391.

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During the reentry of aerospace vehicles into the earth’s atmosphere, the outer shell surface temperature can reach up to 2700°C, which would melt or degrade most materials. The high temperatures that aerospace vehicles face during reentry mean that these vehicles need a thermal protection system (TPS) to shield the rest of the structure and occupants. There are many categories of thermal protection systems and many materials have been used over the years, but the most notable are carbon-carbon composites (CCC). CCCs are usually manufactured by curing a polymer in a fiber preform and then heat-treating the composite until all non-carbon atoms are burnt out. Due to the complexity, it is desired to model the polymerization and carbonization process to fine-tune composite materials. The first step in modeling a CCC involves the polymerization of precursor material, and an atomistic model is to model the polymerization. Therefore, reactive molecular dynamics (MD) has been used to model the polymerization of precursor material. The precursor material selected for benchmarking and validation is furan resin (polyfurfuryl alcohol – PFA). Furan resin has been of interest for CCC ablatives since the 1950s due to its ability to achieve relatively high carbon yields, which reduces the number of carbonization cycles. Furan resin has also found uses in adhesives, corrosion protection, fuel propellants, and foundry molds. In this paper, you will find experimental curing of furan resin and an MD modeling approach for polymerization of furan resin.
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J. Wasowicz, Tomasz. "Cation-induced isomerization of furan molecule." In RAD Conference. RAD Centre, 2022. http://dx.doi.org/10.21175/rad.spr.abstr.book.2022.25.1.

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Reports on the topic "Furkan"

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Stern, Ariana. FLC Notable Technology Award Oleo-Furan Surfactant. Office of Scientific and Technical Information (OSTI), 2020. http://dx.doi.org/10.2172/1645079.

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Cannizzo, Louis F., R. S. Hamilton, Thomas K. Highsmith, and Andrew J. Sanderson. Furazan-Based Energetic Ingredients. Defense Technical Information Center, 1999. http://dx.doi.org/10.21236/ada405840.

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Patel, S., M. D. Kaminski, and L. Nunez. Polychlorodibenzo-p-dioxin and polychlorodibenzo-furan removal and destruction. Office of Scientific and Technical Information (OSTI), 2003. http://dx.doi.org/10.2172/816759.

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Moore, Cameron. EASIER ACCESS TO FUNCTIONAL FURANS. Office of Scientific and Technical Information (OSTI), 2021. http://dx.doi.org/10.2172/1832366.

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Larrea, Sylvia Virginia, Sergio Wilson Ferraz Fontes, Lucio Cruz, and Antonio Manuel Pereira Bernardo. PRO-Furnas: Programa de Reestructuración Organizacional: Presentación del caso de Furnas Centrais Eletricas S.A. Inter-American Development Bank, 2016. http://dx.doi.org/10.18235/0000374.

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Liu, Xiaobing, and Mini Malhotra. Case Study for the ARRA-funded GSHP Demonstration at Furman University. Office of Scientific and Technical Information (OSTI), 2017. http://dx.doi.org/10.2172/1408657.

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Smith, Jordan, Justin Teeguarden, and Thomas Weber. Proposed Occupational Exposure Limits for Furans. Office of Scientific and Technical Information (OSTI), 2019. http://dx.doi.org/10.2172/1989677.

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Cureton, LaShonda T., George Fountzoulas, and John J. La Scala. Molecular Weight Measurement of Biobased Furan Polyamides via Non-Aqueous Potentiometric Titration. Defense Technical Information Center, 2013. http://dx.doi.org/10.21236/ada586113.

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Allcock, Harry R., Jeffrey A. Dodge, Leon S. Van Dyke, and Charles R. Martin. Polyphosphazenes Bearing Polymerizable Pyrrole, Thiophene and Furan Side Groups: Synthesis and Chemical Oxidation. Defense Technical Information Center, 1992. http://dx.doi.org/10.21236/ada249747.

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Leung, Man-kit. Dimerization kinetics and products of. alpha. -substituted o-quinodimethanes derived from benzene and furan. Office of Scientific and Technical Information (OSTI), 1992. http://dx.doi.org/10.2172/7047444.

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