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Journal articles on the topic 'Furkan'

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

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1

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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2

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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3

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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4

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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5

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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6

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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7

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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8

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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9

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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10

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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11

Durucan, Furkan, Tapas Chatterjee, and Vladimir Pešić. "Two new species of the marine water mite family Pontarachnidae (Acari: Hydrachnidia) from the Gulf of Antalya, Turkey." Zootaxa 4531, no. 2 (2018): 271–78. https://doi.org/10.11646/zootaxa.4531.2.8.

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Durucan, Furkan, Chatterjee, Tapas, Pešić, Vladimir (2018): Two new species of the marine water mite family Pontarachnidae (Acari: Hydrachnidia) from the Gulf of Antalya, Turkey. Zootaxa 4531 (2): 271-278, DOI: 10.11646/zootaxa.4531.2.8
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12

Durucan, Furkan. "The genus Maracarus (Acari: Halacaridae), description of three new species and one new record from Türkiye." Zootaxa 5486, no. 4 (2024): 539–56. https://doi.org/10.11646/zootaxa.5486.4.4.

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Durucan, Furkan (2024): The genus Maracarus (Acari: Halacaridae), description of three new species and one new record from Türkiye. Zootaxa 5486 (4): 539-556, DOI: 10.11646/zootaxa.5486.4.4, URL: http://dx.doi.org/10.11646/zootaxa.5486.4.4
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13

Pešić, Vladimir, Furkan Durucan, and Andrzej Zawal. "Marine mites (Acari: Hydrachnidia) of the Mediterranean Sea: Descriptions of two new species, key for identification and future prospects." Zootaxa 4585, no. 3 (2019): 501–16. https://doi.org/10.11646/zootaxa.4585.3.6.

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Pešić, Vladimir, Durucan, Furkan, Zawal, Andrzej (2019): Marine mites (Acari: Hydrachnidia) of the Mediterranean Sea: Descriptions of two new species, key for identification and future prospects. Zootaxa 4585 (3): 501-516, DOI: 10.11646/zootaxa.4585.3.6
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14

Durucan, Furkan, Pedro Range, and Radhouane Ben-Hamadou. "Plegadognathus bonariensis (Acari: Halacaridae): First halacarid mite report from Qatar." Persian Journal of Acarology 8, no. 2 (2019): 165–68. https://doi.org/10.22073/pja.v8i2.45159.

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Durucan, Furkan, Range, Pedro, Ben-Hamadou, Radhouane (2019): Plegadognathus bonariensis (Acari: Halacaridae): First halacarid mite report from Qatar. Persian Journal of Acarology 8 (2): 165-168, DOI: 10.22073/pja.v8i2.45159, URL: https://www.mendeley.com/catalogue/95e923ff-b845-3d91-b5c7-437930f5431d/
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15

Durucan, Furkan, Juan Carlos De La Paz, and David Hernández-Teixidor. "Description of two new Rhombognathus species (Acari: Trombidiformes: Halacaridae) from Tenerife (Canary Islands)." Zootaxa 5636, no. 3 (2025): 587–96. https://doi.org/10.11646/zootaxa.5636.3.12.

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Durucan, Furkan, Paz, Juan Carlos De La, Hernández-Teixidor, David (2025): Description of two new Rhombognathus species (Acari: Trombidiformes: Halacaridae) from Tenerife (Canary Islands). Zootaxa 5636 (3): 587-596, DOI: 10.11646/zootaxa.5636.3.12, URL: https://doi.org/10.11646/zootaxa.5636.3.12
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16

Özbek, Hasan Hüseyin, and Furkan Durucan. "Two new records of the genus Macrocheles (Acari: Macrochelidae) from Türkiye, with redescription of M. similis Krantz and Filipponi." Acarological Studies 6, no. 1 (2024): 44–51. https://doi.org/10.47121/acarolstud.1385220.

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Özbek, Hasan Hüseyin, Durucan, Furkan (2024): Two new records of the genus Macrocheles (Acari: Macrochelidae) from Türkiye, with redescription of M. similis Krantz and Filipponi. Acarological Studies 6 (1): 44-51, DOI: 10.47121/acarolstud.1385220, URL: http://dx.doi.org/10.47121/acarolstud.1385220
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17

Abibulaeva, Alie, Çağri Yalçin, Furkan Durucan, and Igor Dovgal. "New record of Epistylis obliqua Sommer, 1951 (Ciliophora, Peritrichia) on aquatic mite Unionicola minor (Soar 1900) (Acari, Hydrachnidia)." Zootaxa 5352, no. 2 (2023): 279–83. https://doi.org/10.11646/zootaxa.5352.2.8.

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Abibulaeva, Alie, Yalçin, Çağri, Durucan, Furkan, Dovgal, Igor (2023): New record of Epistylis obliqua Sommer, 1951 (Ciliophora, Peritrichia) on aquatic mite Unionicola minor (Soar 1900) (Acari, Hydrachnidia). Zootaxa 5352 (2): 279-283, DOI: 10.11646/zootaxa.5352.2.8, URL: http://dx.doi.org/10.11646/zootaxa.5352.2.8
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18

UeckermannK, Edward A., Juan Carlos De La Paz K, David Hernández-TeixidorK, and Furkan Durucan K. "Rediscovery and redescription of Teneriffia quadripapillata Sig Thor (Acari: Trombidiformes: Teneriffiidae)." Acarologia 62, no. 3 (2022): 786–97. https://doi.org/10.24349/3jom-1y9d.

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UeckermannK, Edward A., K, Juan Carlos De La Paz, Hernández-TeixidorK, David, K, Furkan Durucan (2022): Rediscovery and redescription of Teneriffia quadripapillata Sig Thor (Acari: Trombidiformes: Teneriffiidae). Acarologia 62 (3): 786-797, DOI: 10.24349/3jom-1y9d, URL: https://www1.montpellier.inrae.fr/CBGP/acarologia/article.php?id=4544
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19

Durucan, Furkan. "Psammobiont halacarid mites (Acari: Halacaridae) from Türkiye: description of two new species of the genus Atelopsalis Trouessart, 1896 and Scaptognathus Trouessart, 1889 and two new records." Zootaxa 5536, no. 2 (2024): 261–76. https://doi.org/10.11646/zootaxa.5536.2.3.

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Durucan, Furkan (2024): Psammobiont halacarid mites (Acari: Halacaridae) from Türkiye: description of two new species of the genus Atelopsalis Trouessart, 1896 and Scaptognathus Trouessart, 1889 and two new records. Zootaxa 5536 (2): 261-276, DOI: 10.11646/zootaxa.5536.2.3, URL: http://dx.doi.org/10.11646/zootaxa.5536.2.3
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20

Durucan, Furkan, Published Online, and Final Version. "New record of the genus Scaptognathus (Acari: Halacaridae) from Antalya with a checklist of marine halacarid mites of Turkey." Turkish Journal of Zoology 42, no. 4 (2018): 499–507. https://doi.org/10.3906/zoo-1803-6.

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Durucan, Furkan, Online, Published, Version, Final (2018): New record of the genus Scaptognathus (Acari: Halacaridae) from Antalya with a checklist of marine halacarid mites of Turkey. Turkish Journal of Zoology 42 (4): 499-507, DOI: 10.3906/zoo-1803-6, URL: http://dx.doi.org/10.3906/zoo-1803-6
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21

Sørensen, Martin V., Maria Herranz B, Fernando Pardos B, and Furkan Durucan B. "Kinorhynchs from sandy coastal habitats in Turkey, with the description of a new pan-Mediterranean species of Echinoderes (Cyclorhagida: Echinoderidae)." Turkish Journal of Zoology 45, no. 7 (2021): 526–49. https://doi.org/10.3906/zoo-2108-20.

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Sørensen, Martin V., B, Maria Herranz, B, Fernando Pardos, B, Furkan Durucan (2021): Kinorhynchs from sandy coastal habitats in Turkey, with the description of a new pan-Mediterranean species of Echinoderes (Cyclorhagida: Echinoderidae). Turkish Journal of Zoology 45 (7): 526-549, DOI: 10.3906/zoo-2108-20, URL: http://dx.doi.org/10.3906/zoo-2108-20
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22

Fatih, KILLI, and BEYCIOGLU Tahsin. "Yield and Yield Parameters of 46 Cotton (Gossypium spp.) Cultivars under Kahramanmaras (Turkey) Conditions." International Journal of Environmental & Agriculture Research 6, no. 8 (2020): 13–18. https://doi.org/10.5281/zenodo.4009009.

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<strong><em>Abstract</em></strong><strong><em>&mdash;</em></strong> <em>Variety yield and adaptation studies are of great importance in increasing cotton production and cultivation. This work was carry out to determine yield(seed cotton and fiber) and yield parameters (plant height, sympodial branches, boll number, seed cotton weight, 100 seed weight and ginning outturn) of 46 cotton genotypes, two of which belong to barbadense and forty-four of hirsutum species, under east Mediterranean ecological conditions of Kahramanmaras &ndash; Turkey in 2013 and 2014. According to the analysis of variance yield and yield parameters showed significant differences between genotypes. Year and genotype-year interactions were not significant for all characteristics studied. Based on two-year average results, cotton cultivars BA-119, ST-468 and Furkan gave higher seed cotton and fiber yield per hectare than the others. Minimum seed cotton and fiber yield was observed in Maydos. Cotton varieties BA-119, ST-468 and Furkan can be recommended to cotton producers for production regions due to their high seed cotton and fiber yield.</em>
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23

Sørensen, Martin V., Freya E. Goetz, María Herranz, et al. "Description, redescription and revision of sixteen putatively closely related species of Echinoderes (Kinorhyncha: Cyclorhagida), with the proposition of a new species group - the Echinoderes dujardinii group." European Journal of Taxonomy 730 (December 30, 2020): 1–101. https://doi.org/10.5852/ejt.2020.730.1197.

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Sørensen, Martin V., Goetz, Freya E., Herranz, María, Chang, Cheon Young, Chatterjee, Tapas, Durucan, Furkan, Neves, Ricardo C., Yildiz, N. Özlem, Norenburg, Jon, Yamasaki, Hiroshi (2020): Description, redescription and revision of sixteen putatively closely related species of Echinoderes (Kinorhyncha: Cyclorhagida), with the proposition of a new species group - the Echinoderes dujardinii group. European Journal of Taxonomy 730: 1-101, DOI: 10.5852/ejt.2020.730.1197
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24

KAYA, Murat. "Peygamberlere Gelen İlahi Mesajı Tamamlayıcı Üç Temel Ölçü: Mîzân, Furkan ve Hik." Journal of Turkish Studies 13, Volume 13 Issue 17 (2018): 205–20. http://dx.doi.org/10.7827/turkishstudies.14016.

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25

Luo, D., and D. G. Oppenheimer. "Genetic control of trichome branch number in Arabidopsis: the roles of the FURCA loci." Development 126, no. 24 (1999): 5547–57. http://dx.doi.org/10.1242/dev.126.24.5547.

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We are using trichome (hair) morphogenesis as a model to study how plant cell shape is controlled. During a screen for new mutations that affect trichome branch initiation in Arabidopsis, we identified seven new mutants that show a reduction in trichome branch number from three branches to two. These mutations were named furca, after the Latin word for two-pronged fork. These seven recessive mutations were placed into four complementation groups that define four new genes: FURCA1, FURCA2, FURCA3 and FURCA4. The trichome branch number phenotype indicates that the FURCA genes encode positive regulators of trichome branch initiation. Analysis of double mutants suggests that primary and secondary branch initiation events are not genetically distinct, but rely on the levels of partially redundant groups of regulators of trichome branch initiation. Based on the analysis of both epistatic and additive genetic interactions between the FURCA genes and other genes that control trichome branch number, we propose a model that explains how these genes interact to control trichome branch initiation. This model successfully predicts the phenotypes of all the single and double mutants examined and suggests points of control of the trichome branch pathway.
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26

Chera Anghel, Irina Alina, and Elena Gatman. "Transformer lifetime management by analyzing the content of furan and gas dissolved in oil." E3S Web of Conferences 112 (2019): 04004. http://dx.doi.org/10.1051/e3sconf/201911204004.

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In order to see the transformer insulation status, the temperature profile, the degree of polymerization (DP), the furan compound content, the carbon dioxide, and carbon monoxide concentration are monitored. By evaluating the degree of polymerization (DP) of the cellulose paper insulation and furans in the determination of the insulating oil, it can estimate the lifetime of the transformer. Analysis of cellulose insulation paper to see the degree of polymerization (DP) can be performed safely only when the transformer is interrupted. However, being a non-invasive test, determination of furane content in an oil-insulating oil is often used as an alternative method for measuring the DP average of insulation paper. In order to analyze the technical condition of a transformer, furan content in oil should be used and interpreted as a primary chemical indicator in conjunction with the results of carbon oxide from the dissolved gas analysis, the acidity and moisture results from the chemical tests, the methanol content from the chromatographic tests and other monitoring techniques.
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27

Duc, Dau Xuan. "Recent Achievement in the Synthesis of Benzo[b]furans." Current Organic Synthesis 17, no. 7 (2020): 498–517. http://dx.doi.org/10.2174/1570179417666200625212639.

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Background: Benzo[b]furan derivatives are oxygen-containing heterocyclic compounds consisting of fused benzene and furan rings and are present in a large number of natural and non-natural compounds. This class of compounds has a wide spectrum of biological activities, such as antiarrhythmic, anticancer, inflammatory, antioxidant, antimicrobial, and antiviral. Furthermore, benzo[b]furan derivatives have also been applied in various areas, such as organic electroluminescence device materials and organic dyes, photosensitizing material, organic synthesis as building blocks or intermediates. : Because of a broad range of applicability, the synthesis of benzo[b]furan derivative has drawn great attention of chemists and many studies on the synthesis of this class of compounds have been reported recently. This review will give an overview of benzo[b]furan preparation based on studies dating back to the year 2012. Objective: In this review, recent development in the synthesis of benzo[b]furans are discussed. There has been increasingly new methodologies for the construction of benzo[b]furans skeleton to improve efficiency or develop environmentally friendly procedures. In some studies, reaction mechanisms were also outlined. Conclusion: Many methods for the synthesis of benzo[b]furans have been reported recently. Most of them involve cyclization or cycloisomerization processes. Unquestionably, more imaginative strategies for the construction of benzo[b]furan skeleton will be established in the near future. Application of known methods to natural products or drug synthesis, on industrial scale for the synthesis of economically or medicinally important benzo[ b]furans will probably be paid attention to.
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28

Albrand, Michel, René Dolmazon, and Patrick Pollet. "Synthèse, structure et études spectroscopiques RMN 1H et 13C de dérivés perhydrocyclododéca[b]furaniques." Canadian Journal of Chemistry 69, no. 3 (1991): 521–27. http://dx.doi.org/10.1139/v91-078.

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A synthetic route to perhydrocyclododeca[b]furan-3-ols, perhydrocyclododeca[b]furan-3-ones, and perhydrocyclododeca[b]furan derivatives is described. Their configurations were determined. For the perhydrocyclododeca[b]furan-3-one and perhydrocyclododeca[b]furan pairs, the cis isomer was much less stable than the trans isomer. This agrees well with results from a conformational analysis, carried out by molecular mechanics. The 1H and l3C NMR spectra are reported. Key words: perhydrocyclododeca[b]furans, conformations, force field calculations, 1H and 13C NMR.
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29

Nisa, Syeedun, and Abdullah Bin Junaid. "EHBH Pvt. Ltd – a step towards creation of a unique business model." Emerald Emerging Markets Case Studies 3, no. 6 (2013): 1–14. http://dx.doi.org/10.1108/eemcs-04-2013-0030.

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Subject area Entrepreneurship. Study level/applicability Postgraduate/graduate management programmes. Case overview EHBH is a Delhi-based healthy food and snacks company offering an effective, efficient and reliable service in the beverage/catering segment. The company has opened outlets in corporate offices and educational institutions in Delhi/NCR. Driven by quality and hygiene standards, the company's aim is to keep customer satisfaction at the core of its operations. The case on EHBH describes the entrepreneurial journey of the founder and MD, Mr Furkan Khan. The case discusses the motivation to start a new venture. The thrust of the case lies in learning how to develop and operate unique business model. The case is written at the time when the company is in its establishment stage. The case elucidates the potential in the food industry especially fruit juices. Expected learning outcomes To demonstrate specific motivating factors to enter into a new venture, to understand various entrepreneurial models and their applicability in the present case, to highlight overview, trends and the various challenges associated with Indian juice food industry, to understand the conception and implementation of new business model. Supplementary materials Teaching notes are available for educators only. Please contact your library to gain login details or email support@emeraldinsight.com to request teaching notes.
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Gui, Jinghan, and Jiachen Deng. "Alkyne-Forming Furan Fragmentation: A General Method to Convert Furans into Alkynoic Acids." Synlett 30, no. 06 (2019): 642–46. http://dx.doi.org/10.1055/s-0037-1611943.

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Furans are readily available and highly reactive heterocycles that serve as versatile four-carbon synthons in organic synthesis. Recently, we discovered that furans, upon oxidation with singlet oxygen, can be transformed into alkynes via dual C–C double-bond cleavage. This Synpacts article presents an overview of the historical context and the development of this furan fragmentation reaction. We also discuss its application in natural product synthesis and a plausible reaction mechanism.1 Introduction2 Background of Alkyne-Forming Furan Fragmentation3 Reaction Development4 Conclusion
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31

Krause, T., C. Tubbesing, K. Benzing, and H. F. Schöler. "Model reactions and natural occurrence of furans from hypersaline environments." Biogeosciences Discussions 10, no. 11 (2013): 17439–68. http://dx.doi.org/10.5194/bgd-10-17439-2013.

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Abstract. Volatile organic compounds like furan and its derivatives are important for atmospheric properties and reactions. In this paper the known abiotic formation of furan from catechol under Fenton-like conditions with Fe3+ sulphate was revised by the use of a bispidine Fe2+ complex as a~model compound for iron with well-known characteristics. While total yields were comparable to those with the Fe3+ salt, the turnover numbers of the active iron species increased. Additionally, the role of iron and pH will be discussed during furan formation from model compounds and in natural sediment and water samples collected from the Dead Sea and several salt lakes in Western Australia. Various alkylated furans and even traces of halogenated furans (3-chlorofuran and 3-bromofuran) were found in these samples. Furthermore, the emission of furans is compared to the abundance of several possible precursors such as isoprene and aromatic hydrocarbons as well as to the related thiophenes. It is assumed that the emissions of volatile organic compounds such as furans contribute to the formation of ultra fine particles in the vicinity of salt lakes and are therefore important for the local climate.
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32

Hana, Saeid1* Hadeel Al-sayed2 Marwa Bader2. "A Review on Biological and Medicinal Significance of Furan." Alq J Med App Sci 6, no. 1 (2023): 44–58. https://doi.org/10.5281/zenodo.7650255.

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An important group of heterocyclic compounds with significant biological characteristics are furan derivatives. The creation of furan derivatives and their testing for various pharmacological properties have received a lot of attention over the past few decades. Various substances with anti-bacterial properties have a fundamental skeleton made up of furan rings. These molecules are frequently used in antiviral, antifungal, anti-inflammatory, analgesic, antidepressant, anti-anxiolytic, anti-parkinsonian, anti-glaucoma, muscle relaxant, antihypertensive, diuretic, anti-ulcer, anti-ageing, and anticancer medications. The biological activity of furans can alter noticeably due to a slight modification in the pattern of substitution. In the realm of medicinal chemistry, furan derivatives have taken on a special position. An important synthetic technique in the search for new drugs is the inclusion of the furan nucleus. The great therapeutic efficacy of furan-related medicines has promoted the medicinal chemists to create large number of novel chemotherapeutic agents. The field of medicinal chemistry encompasses a diverse array of opportunities due to the different ways that furans derivatives can be synthesized as well as their various structural reactions. This article aims to review previous work on the medicinal and biological activities during past years.
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33

Fromberg, A., M. S. Mariotti, F. Pedreschi, S. Fagt, and K. Granby. "Furan and alkylated furans in heat processed food, including home cooked products ." Czech Journal of Food Sciences 32, No. 5 (2014): 443–48. http://dx.doi.org/10.17221/341/2013-cjfs.

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The occurrence of furan in home cooked food was studied. Cooking was found to reduce the level of furan in ready-to-eat foods, however on average around 50% of furan remain in the foods. The analysis of furan occurrence revealed that it is most commonly formed in foods with high levels of carbohydrates. Interestingly, breakfast cereals, dry bread products, and dried fruit products including raisins, plums and bananas contained furan at levels up to 387 &amp;micro;g/kg. Furan was also found in the dry ingredients of cookies and bread, and in snacks such as crisps and popcorn. The 2-alkylfurans, 2-methylfuran, 2,5-dimethylfuran, 2-ethylfuran, and 2-pentylfuran were present at levels in the same range as furan (885 &amp;micro;g/kg) and the level of 2-methylfuran (1328 &amp;micro;g/kg) exceeded this level in coffee. &amp;nbsp;
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34

Furkan, SENGULER, and YUMURTACI Zehra. "Hybrid Solar And Wind Energy Potential Map of Turkey and Cost Analysis of 1 MW Hybrid Power Plants Furkan SENGULER." International Journal of Engineering Research and Advanced Technology (IJERAT) 5, no. 6 (2019): 1–14. https://doi.org/10.31695/IJERAT.2019.3450.

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<em>While the need for electrical energy has increased over time, a renewable energy source alone cannot meet this increase yet. In the future, alternative ways of decreasing loyalty to fossil fuels are sought. Hybrid energy is an important step in this regard. Hybrid energy is a good alternative to fossil fuels, due to the high production capacity compared to solar or wind energy alone. In Turkey, investment of solar and wind energy increasing day by day. While solar and wind power getting crucial for Turkey it is important to know how much potential of hybrid energy exists in the country with a map. Purpose of this study is by combining solar and wind potential of Turkey, creating the hybrid energy potential map. In addition, with considering the economic conditions the establishment of a hybrid power plant scenario created. This scenario is aimed to determine whether the hybrid power plant feasible or not. In this regard, solar and wind potential in 81 provinces were determined. By combining wind and solar potential data at the same points, hybrid energy potentials were determined. Then, if a 1MW power plant was established for each province based on the determined hybrid potential data, the cost analysis of the value of the investment was made based on the appropriate economic data. According to the results of the study especially in Hatay in Turkey were found to be quite high wind potential and solar potential at an adequate level. Also, provinces such as &Ccedil;anakkale and Karaman follow Hatay as high yielding regions. After the studies, Turkey has been found to be a suitable place for hybrid energy. The hybrid power plant, which uses clean and renewable energy sources can reduce fossil fuel utilization rate. So hybrid energy can be an alternative way to save both Turkey and the World.</em>
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35

Sertaç, Tuhta, Günday Furkan, and Aydin Hakan. "Dynamic Analysis of Model Steel Structures Retrofitted with GFRP Composites under Microtremor Vibration." International Journal of Trend in Scientific Research and Development 3, no. 2 (2019): 729–33. https://doi.org/10.31142/ijtsrd21455.

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There are many varieties of the structural and architectural structures strengthened with different FRP composites are gaining popularity, and there is a growing need to understand and compare the behavior of these structures before after GFRP composite strengthening. In this study, model steel structure was tested on the bench scale earthquake simulator The Quanser Shake Table using ambient vibration, to determine the dynamic response. After this, slabs of the model steel structure was strengthened with GFRP composite, and tested on the bench scale earthquake simulator The Quanser Shake Table using ambient vibration, to determine the dynamic behavior. Finally, dynamic responses of model steel structure before and after GFRP composite strengthening, such as displacements and maximum minimum acceleration, were compared. At the end of the study, it is seen that displacements had decreased along the height of the model steel structure. Also, it is seen from the earthquake analyses that GFRP strengthening is very effective on the dynamic responses of the model steel structure. Serta&Atilde;&sect; Tuhta | Furkan G&Atilde;&frac14;nday | Hakan Aydin &quot;Dynamic Analysis of Model Steel Structures Retrofitted with GFRP Composites under Microtremor Vibration&quot; Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-3 | Issue-2 , February 2019, URL: https://www.ijtsrd.com/papers/ijtsrd21455.pdf
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36

Keay, Brian A., and Jean-Louis J. Bontront. "A facile preparation of 4-aryl-3-[(tert-butyldimethylsilyl)oxymethyl]furans." Canadian Journal of Chemistry 69, no. 8 (1991): 1326–30. http://dx.doi.org/10.1139/v91-197.

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A series of aryl bromides undergo a palladium-catalyzed coupling reaction with 3-[(tert-butyldimethylsilyl)oxymethyl]-4-(tri-n-butylstannyl)furan to provide 4-aryl-3-[(tert-butyldimethylsilyl)oxymethyl]furans in moderate to good yields. Key words: palladium, cross-couplings, stannanes, 3,4-disubstituted furans.
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37

Skowroń, Jolanta, and Katarzyna Konieczko. "Furan. Dokumentacja proponowanych dopuszczalnych wielkości narażenia zawodowego." Podstawy i Metody Oceny Środowiska Pracy 36, no. 4 (2020): 109–44. http://dx.doi.org/10.5604/01.3001.0014.5831.

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Furan jest stosowany w syntezie organicznej, przy produkcji lakierów, leków, stabilizatorów, zamienników detergentów, środków chemicznych stosowanych w rolnictwie, laminatów odpornych na temperaturę, jako rozpuszczalnik żywic i odczynnik w laboratoriach. Furan jest zaklasyfikowany do substancji rakotwórczych kategorii zagrożenia 1B. W latach 2005-2017 wzrastała liczba zakładów pracy zgłaszających furan do Centralnego Rejestru Danych o Narażeniu na Substancje, Czynniki i Procesy Technologiczne o Działaniu Rakotwórczym lub Mutagennym w Środowisku Pracy. W 2017 r. 9 zakładów zgłosiło 183 narażonych pracowników. Dotychczas w Polsce nie ustalono wartości NDS dla furanu. W warunkach narażenia zawodowego furan wchłania się do organizmu drogą inhalacyjną i dermalną. Jako skutek krytyczny narażenia na furan przyjęto działanie hepatotoksyczne. Wartość NDS na poziomie 0,05 mg/m3 powinna zabezpieczyć pracowników również przed działaniem rakotwórczym. Dodatkowe ryzyko białaczki u osób zatrudnionych przez 40 lat na furan o stężeniu 0,05 mg/m3 jest poniżej 10-3 i nie przekracza wartości ryzyka akceptowalnego w środowisku pracy. Ze względu na działanie drażniące furanu ustalono wartość chwilową NDSCh na poziomie 0,1 mg/m3. Substancja powinna być oznakowana: „Carc. 1B” (substancja rakotwórcza kategorii zagrożenia 1B), „I” (substancja o działaniu drażniącym) oraz „skóra” (wchłanianie substancji przez skórę może być tak samo istotne, jak przy narażeniu drogą oddechową). Zakres tematyczny artykułu obejmuje zagadnienia zdrowia oraz bezpieczeństwa i higieny środowiska pracy będące przedmiotem badań z zakresu nauk o zdrowiu oraz inżynierii środowiska.
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38

Krause, T., C. Tubbesing, K. Benzing, and H. F. Schöler. "Model reactions and natural occurrence of furans from hypersaline environments." Biogeosciences 11, no. 10 (2014): 2871–82. http://dx.doi.org/10.5194/bg-11-2871-2014.

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Abstract. Volatile organic compounds like furan and its derivatives are important for atmospheric properties and reactions. In this work the known abiotic formation of furan from catechol under Fenton-like conditions with Fe3+ sulfate was revised by the use of a bispidine Fe2+ complex as a model compound for iron with well-known characteristics. While total yields were comparable to those with the Fe3+ salt, the bispidine Fe2+ complex is a better catalyst as the turnover numbers of the active iron species were higher. Additionally, the role of iron and pH is discussed in relation to furan formation from model compounds and in natural sediment and water samples collected from the Dead Sea and several salt lakes in Western Australia. Various alkylated furans and even traces of halogenated furans (3-chlorofuran and 3-bromofuran) were found in some Australian samples. 3-chlorofuran was found in three sediments and four water samples, whereas 3-bromofuran was detected in three water samples. Further, the emission of furans is compared to the abundance of several possible precursors such as isoprene and aromatic hydrocarbons as well as to the related thiophenes. It is deduced that the emissions of volatile organic compounds such as furans contribute to the formation of ultra-fine particles in the vicinity of salt lakes and are important for the local climate.
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39

Eggly, Alyssa S., Namuunzul Otgontseren, Carson B. Roberts, Amir Y. Alwali, Haylie E. Hennigan, and Elizabeth I. Parkinson. "A Diels–Alder probe for discovery of natural products containing furan moieties." Beilstein Journal of Organic Chemistry 20 (May 2, 2024): 1001–10. http://dx.doi.org/10.3762/bjoc.20.88.

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Natural products (NPs) are fantastic sources of inspiration for novel pharmaceuticals, oftentimes showing unique bioactivity against interesting targets. Specifically, NPs containing furan moieties show activity against a variety of diseases including fungal infections, and cancers. However, it is challenging to discover and isolate these small molecules from cell supernatant. The work described herein showcases the development of a molecular probe that can covalently modify furan moieties via a [4 + 2] Diels–Alder cycloaddition, making them easily identifiable on liquid chromatography–mass spectrometry (LC–MS). The molecular probe, which undergoes this reaction with a variety of furans, was designed with both a UV-tag and a mass tag to enable easy identification. The probe has been tested with a variety of purified furans, including natural products, methylenomycin furan (MMF) hormones, and MMF derivatives. Moreover, the molecular probe has been tested in crude supernatants of various Streptomyces strains and enables identification of MMFs.
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40

Yadav, Maruti B., and Yeon Tae Jeong. "A one-pot ring-closure and ring-opening sequence for the cascade synthesis of dihydrofurofurans and functionalized furans." Organic & Biomolecular Chemistry 19, no. 34 (2021): 7409–19. http://dx.doi.org/10.1039/d1ob01300a.

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41

Mu, Qianqian, Fuwu Yan, Jizhou Zhang, Lei Xu, and Yu Wang. "Experimental and Numerical Study on the Sooting Behaviors of Furanic Biofuels in Laminar Counterflow Diffusion Flames." Energies 14, no. 18 (2021): 5995. http://dx.doi.org/10.3390/en14185995.

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Furanic biofuels have received increasing research interest over recent years, due to their potential in reducing greenhouse gas emissions and mitigating the production of harmful pollutants. Nevertheless, the heterocyclic structure in furans make them readily to produce soot, which requires an in-depth understanding. In this study, the sooting characteristic of several typical furanic biofuels, i.e., furan, 2-methylfuran (MF), and 2,5-dimethylfuran (DMF), were investigated in laminar counterflow flames. Combined laser-based soot measurements with numerical analysis were performed. Special focus was put on understanding how the fuel structure of furans could affect soot formation. The results show that furan has the lowest soot volume fraction, followed by DMF, while MF has the largest value. Kinetic analyses revealed that the decomposition of MF produces high amounts of C3 species, which are efficient benzene precursors. This may be the reason for the enhanced formation of polycyclic aromatic hydrocarbons (PAHs) and soot in MF flames, as compared to DMF and furan flames. The major objectives of this work are to: (1) understand the sooting behavior of furanic fuels in counterflow flames, (2) elucidate the fuel structure effects of furans on soot formation, and (3) provide database of quantitative soot concentration for model validation and refinements.
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42

Mahmoud, Ziada, and Tuhta Sertaç. "Analysis of Tunnel Form Building Retrofitted with CFRP using Finite Element Method." International Journal of Trend in Scientific Research and Development 3, no. 2 (2019): 822–26. https://doi.org/10.31142/ijtsrd21505.

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Many regions where have the earthquake risk around the world, many buildings in developing countries are ineffective in front of earthquake forces. Recent years, the fabrics which are strengthening with carbon fiber reinforced polymer CFRP have become a very common material to strengthen the reinforced concrete buildings. In our country, mostly column jacketing and partition systems are used. They are also followed with steel jacketing and trussed steel joist systems. Reinforcement with composites named FRP fiber reinforced polymer are getting common slowly by slowly in our country. Since fibers are high tensile steel, they increase the strength of joist and covering deflection. If it is used in the direction of tensile, it also saves the strength for shearing. In this study,1 mm CFRP hardware is applied to the each covering of a 16 floor reinforced concrete building which is made with tunnel formwork system. In this analysis done with SAP2000 program, increase in the frequency of a reinforced concrete building is observed structure which has less in cycle is appeared. These results show us that CFRP hardware&#39;s make and 38 increase in the rigid of structure. Mahmoud Ziada | Serta&ccedil; Tuhta | Eren Hayati Gen&ccedil;bay | Furkan G&uuml;nday | Yosra Tammam &quot;Analysis of Tunnel Form Building Retrofitted with CFRP using Finite Element Method&quot; Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-3 | Issue-2 , February 2019, URL: https://www.ijtsrd.com/papers/ijtsrd21505.pdf
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43

Newland, Mike J., Yangang Ren, Max R. McGillen, Lisa Michelat, Véronique Daële, and Abdelwahid Mellouki. "NO&lt;sub&gt;3&lt;/sub&gt; chemistry of wildfire emissions: a kinetic study of the gas-phase reactions of furans with the NO&lt;sub&gt;3&lt;/sub&gt; radical." Atmospheric Chemistry and Physics 22, no. 3 (2022): 1761–72. http://dx.doi.org/10.5194/acp-22-1761-2022.

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Abstract. Furans are emitted to the atmosphere during biomass burning from the pyrolysis of cellulose. They are one of the major contributing volatile organic compound (VOC) classes to OH and NO3 reactivity in biomass burning plumes. The major removal process of furans from the atmosphere at night is reaction with the nitrate radical, NO3. Here, we report a series of relative rate experiments in the 7300 L indoor simulation chamber at Institut de Combustion Aérothermique Réactivité et Environnement, Centre national de la recherche scientifique (ICARE-CNRS), Orléans, using a number of different reference compounds to determine NO3 reaction rate coefficients for four furans, two furanones, and pyrrole. In the case of the two furanones, this is the first time that NO3 rate coefficients have been reported. The recommended values (cm3 molec.−1 s−1) are as follows: furan, (1.49 ± 0.23) × 10−12; 2-methylfuran, (2.26 ± 0.52) × 10−11; 2,5-dimethylfuran, (1.02 ± 0.31) × 10−10; furfural (furan-2-aldehyde), (9.07 ± 2.3) × 10−14; α-angelicalactone (5-methyl-2(3H)-furanone), (3.01 ± 0.45) × 10−12; γ-crotonolactone (2(5H)-furanone), &lt;1.4 × 10−16; and pyrrole, (6.94 ± 1.9) × 10−11. The furfural + NO3 reaction rate coefficient is found to be an order of magnitude smaller than previously reported. These experiments show that for furan, alkyl-substituted furans, α-angelicalactone, and pyrrole, reaction with NO3 will be the dominant removal process at night and may also contribute during the day. For γ-crotonolactone, reaction with NO3 is not an important atmospheric sink.
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44

Warrener, RN, GM Elsey, IG Pitt, and RA Russell. "Maleimide-Fused Cyclobutadienes and Dewar Furans: Trapping With Dienes as a Route to Propellane Photosubstrates With Potential for Oxiren Production." Australian Journal of Chemistry 48, no. 2 (1995): 241. http://dx.doi.org/10.1071/ch9950241.

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N-Methylmaleimide-fused cyclobutadiene (15) and its 1,2-dimethyl derivative (41) have been generated by zinc/titanium tetrachloride treatment of the vicinal dibromide (39) and (24) respectively. Prior epoxidations of (24) and (39) produce mixtures of dibromo epoxides which yield the related N-methylmaleimide-fused Dewar furans (16) and (17) upon similar debromination (Zn/TiCl4). None of these reactive intermediates is sufficiently stable for direct observation, but each was trapped in adduct form by Diels-Alder reaction with furan. Attempts to form fused Dewar furan (17) by flash vacuum pyrolysis of the furan adduct (34) led to the production of the isomeric furo [3,4-c] pyrrole (43), the structure of which was confirmed by separate synthesis. Stereochemical assignments have been made to most adducts, and AM1 calculations have been used to predict the stereoselectivities and facial selectivities in these cycloaddition reactions. Reaction of these Dewar furans with cyclopentadienones produced propellanes which were decarbonylated to their respective cyclohexadienes and used as photosubstrates for the generation of oxiren or dimethyloxiren . Attempts to trap oxiren, generated by photolysis of propellane (12), with isobenzofuran were unsuccessful.
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45

Jurášek, Adolf, Vladimír Žvak, Jaroslav Kováč, Oľga Rajniaková та Jarmila Štetinová. "Synthesis and reactions of β-substituted derivatives of furan". Collection of Czechoslovak Chemical Communications 50, № 9 (1985): 2077–83. http://dx.doi.org/10.1135/cccc19852077.

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The 1,4-cycloaddition reaction of 4-phenyl-1,3-oxazole to 2-propinyl benzoate and dimethyl butinedioate afforded the respective 3-furylmethyl benzoate (I) and 3,4-bis(methoxycarbonyl)furan (II). These compounds served for the synthesis of 3-chloromethylfuran and 3,4-bis(chloromethyl)furan, which afforded via Wittig reaction 3-(β-arylvinyl)furans III (aryl = 5-nitro-2-furyl (IIIa), 5-nitro-2-thienyl (IIIb), 1-methyl-4-nitro-2-pyrrolyl (IIIc), and 4-nitrophenyl (IIIe)) and 3,4-bis(β-arylvinyl)furans IV (aryl = 5-nitrofuryl (IVa), 5-nitro-2-thienyl (IVc), and 4-nitrophenyl (IVd)). According to spectral evidence (1H NMR, IR, UV spectra), compound IIIa and IIIb originated as E isomers, whilst the remaining products are a mixture of E and Z isomers; some couples were succeded to separate.
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46

Reddy, Chada Raji, Siddique Z. Mohammed, and Paridala Kumaraswamy. "A [3 + 2]-annulation approach to tetrasubstituted furans from MBH-carbonates of acetylenic aldehydes via sequential substitution/cycloisomerization." Organic & Biomolecular Chemistry 13, no. 30 (2015): 8310–21. http://dx.doi.org/10.1039/c5ob00989h.

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A new organo base-mediated cascade reaction has been developed for the synthesis of uniquely substituted tetrasubstituted furans, 2-furan-3-yl acrylates, starting from MBH-carbonates of acetylenic aldehydes and keto-methylenes.
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47

Bakshi, Debanjan, and Anand Singh. "Direct Csp2–H enolization: an allenoate alkylation cascade toward the assembly of multi-substituted furans." Organic & Biomolecular Chemistry 15, no. 15 (2017): 3175–78. http://dx.doi.org/10.1039/c7ob00248c.

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48

McCallion, George D. "Benzo[b]furans: An investigation into Natural Products, Bioactivity, and Synthesis." Current Organic Chemistry 3, no. 1 (1999): 67–76. http://dx.doi.org/10.2174/1385272803666220130205823.

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Benzo[b]furans have been found to exist in Nature since the late 19th Century. Since that time their investigations have revealed many avenues of understanding their properties. Many benzo[b]furans have exuded bioactivity to certain types of environments which have in turn reveled information that may be of usage to, among others, homo sapiens. But to ascertain more data about benzo[b)furans, interesting Chemistry has also been revealed, particularly in regards to formation of the furan ring itself. This communication will attempt to discuss these three areas and their current directions thereof.
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49

Saito, Yoshinori, Koji Takiguchi, Xun Gong, Chiaki Kuroda, and Motoo Tori. "Thiophene, Furans, and Related Aromatic Compounds from Eupatorium heterophyllum." Natural Product Communications 6, no. 3 (2011): 1934578X1100600. http://dx.doi.org/10.1177/1934578x1100600312.

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A thiophene, two furans, a dihydro furan, and two acetylenic benzene derivatives were isolated from the roots of Eupatorium heterophyllum collected in China. Structures were established on the basis of spectroscopic analyses as well as chemical transformations.
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50

Konshin, Valery V., Vitaly A. Shcherbinin, Ida A. Lupanova, and Dzhamilya N. Konshina. "Convenient Synthesis of 2-(1-Adamantyl)furans." Proceedings 9, no. 1 (2018): 23. http://dx.doi.org/10.3390/ecsoc-22-05667.

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A simple method of obtaining 2-(1-adamantyl)furans using a smaller amount of catalyst, providing a higher yield of the target products, as well as the possibility of varying the substituents in the furan ring was developed. The result wasachieved by the adamantylation of furans with 1-adamantanol in a nitromethane medium in the presence of a Lewis acid, for which aluminum or bismuth triflate was used in an amount of 10 mol%.
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