Search

Your search keyword '"Kikutani, T."' showing total 47 results
Start Over Author "Kikutani, T." Search Limiters Full Text
47 results on '"Kikutani, T."'

3. Effects of clay and POSS nanoparticles on the quiescent and shear-induced crystallization behavior of high molecular weight poly(ethylene terephthalate)

Author

Lee, S.J., Hahm, W.G., Kikutani, T., and Kim, B.C.

Subjects
Crystallization -- Observations -- Measurement -- Research, Molecular weights -- Measurement -- Research, Polyethylene terephthalate -- Properties -- Measurement -- Research, Silicon compounds -- Properties -- Research -- Measurement, Clay -- Properties -- Measurement -- Research, Engineering and manufacturing industries, Science and technology, Observations, Research, Measurement, Properties
Abstract

The effects of organoclay and polyhedral oligomeric silsesquioxanes (POSS) nanoparticles on the crystallization behavior of high molecular weight poly(ethylene terephthalate) (HMWPET; inherent viscosity of 1.05) were investigated in terms of nanoparticle content and shear rate. Both nanoparticles played a role of nucleating agent for PET and increased the cold crystallization temperature by about 24° C. The half-time of crystallization was also decreased with increasing the nanoparticle content. Clay proved to be more effective than POSS; a notable nucleating effect was observed at 0.3 wt% for clay and 2 wt% for POSS. Introducing 1 wt% of clay gave the highest crystallization rate among all PET nanocomposite samples examined. Isothermal crystallization of the nanocomposites under dynamic shear exhibited similar crystallization behavior. As in the DSC measurement, clay appeared to be more effective to promote the crystallization of PET under shear. The nucleating effects were more noticeable at higher shear rate. POLYM. ENG. SCI., 49: 317-323, 2009. © 2008 Society of Plastics Engineers, INTRODUCTION Recently, organic-inorganic hybrid systems have been widely studied because of synergistic effects on the physical properties (1). The introduction of nanosized inorganic materials is expected to increase the mechanical, [...]

Published
2009

14. Abstracts

Author

Barthelemy, O., primary, Silvain, J., additional, Brieger, D., additional, Bellemain-Appaix, A., additional, Cayla, G., additional, Beygui, F., additional, Lancar, R., additional, Collet, J. P., additional, Mercadier, A., additional, Montalescot, G., additional, Cha, K. S., additional, Nam, Y. H., additional, Kim, J. H., additional, Park, S. Y., additional, Park, T. H., additional, Kim, M. H., additional, Kim, Y. D., additional, Lee, H. C., additional, Ahn, M. S., additional, Hong, T. J., additional, Blanco, R., additional, Blanco, F., additional, Szarfer, J., additional, Garcia Escudero, A., additional, Gigena, G., additional, Gagliardi, J., additional, Rodriguez, A., additional, Sarmiento, R., additional, Affatatto, S., additional, Riccitelli, M., additional, Petris, A., additional, Datcu, M. D., additional, Pop, C., additional, Radoi, M., additional, Arsenescu-Georgescu, C., additional, Petrescu, I., additional, Petrescu, L., additional, Serban, L., additional, Nechita, E., additional, Tatu-Chitoiu, G., additional, Dorobantu, M., additional, Benedek, I., additional, Craiu, E., additional, Sinescu, C., additional, Ionescu, D. D., additional, Ginghina, C., additional, Minescu, B., additional, Izzo, A., additional, Mantovani, P., additional, Tomasi, L., additional, Dall'oglio, L., additional, Bonatti, S., additional, Rosiello, R., additional, Romano, M., additional, Agostini, F., additional, Zanini, R., additional, Zhao, Z. Y., additional, Wu, Y. J., additional, Li, J. J., additional, Yany, Y. J., additional, Qian, H. Y., additional, Tang, Y. D., additional, Timoteo, A. T., additional, Toste, A., additional, Lousinha, A., additional, Ramos, R., additional, Oliveira, J. A., additional, Ferreira, M. L., additional, Ferreira, R. C., additional, Cabades, C., additional, Diez Gil, J. L., additional, Aguar, P., additional, Sanmiguel, D., additional, Lopez-March, A., additional, Marmol, R., additional, Guerra, L., additional, Girbes, V., additional, Ferrando, J., additional, Rincon De Arellano, A., additional, Patricio, L., additional, Blondal, M., additional, Ainla, T., additional, Marandi, T., additional, Eha, J., additional, Oliveira, M. M., additional, Silva, M. N., additional, Cunha, P. S., additional, Feliciano, J., additional, Silva, S., additional, Kanovsky, J., additional, Kala, P., additional, Parenica, J., additional, Poloczek, M., additional, Prymusova, K., additional, Kubkova, L., additional, Spinar, J., additional, Olinic, D., additional, Homorodean, C., additional, Ober, M., additional, Olinic, M., additional, Andrioaia, C., additional, Condac, A., additional, Masmoudi, M., additional, Berdaoui, B., additional, Labidi, S., additional, Tapia Ballesteros, C., additional, Hernandez Luis, C., additional, Sandin, M. G., additional, Vegas, J. M., additional, Andion, R., additional, Martinez, N., additional, Gonzalez, I. A., additional, Alvarado, M., additional, Amat, I. J., additional, San Roman, J. A., additional, Garcia Gonzalez, M. J., additional, Arroyo Ucar, E., additional, Hernandez Garcia, C., additional, Dorta Martin, M., additional, Marrero Rodriguez, F., additional, Dragu, R., additional, Kapeliovich, M., additional, Hammerman, H., additional, Silva, D., additional, Cortez-Dias, N., additional, Jorge, C., additional, Silva Marques, J., additional, Carilho Ferreira, P., additional, Robalo Martins, S., additional, Almeida Ribeiro, M., additional, Calisto, C., additional, Fiuza, M., additional, Lopes, M. G., additional, Milicevic, P., additional, Panic, M., additional, Stankovic, I., additional, Milicevic, D., additional, Kalezic, T., additional, Kafedzic, S., additional, Ilic, I., additional, Cerovic, M., additional, Putnikovic, B., additional, Neskovic, A., additional, Rott, D., additional, Leibowitz, D., additional, Monhart, Z., additional, Reissigova, J., additional, Grunfeldova, H., additional, Jansky, P., additional, Valente, B., additional, Villanueva Benito, I., additional, Solla, I., additional, Paredes, E., additional, Diaz Castro, O., additional, Calvo, F., additional, Baz, J. A., additional, Iniguez, A., additional, Aleksova, A., additional, Gerloni, R., additional, Belfiore, R., additional, Carriere, C., additional, Barbati, G., additional, Fabris, E., additional, Possa, F., additional, Nait, D., additional, Milo, M., additional, Sinagra, G., additional, Marques, N., additional, Mimoso, J., additional, Gomes, V., additional, Agra Bermejo, R. M., additional, Emad Abu Assi, E. A. A., additional, Sergio Raposeiras Roubin, S. R. R., additional, Pilar Cabanas Grandio, P. C. G., additional, Carlos Pena Gil, C. P. G., additional, Jose Maria Garcia Acuna, J. M. G. A., additional, Jose Ramon Gonzalez Juanatey, J. R. G. J., additional, Daly, M. J., additional, Scott, P., additional, Owens, C. G., additional, Tomlin, A., additional, Smith, B., additional, Adgey, A. A. J., additional, Alvarez-Contreras, L. R., additional, Juarez, U., additional, Altamirano, A., additional, Arias, A., additional, Alvarez-San Gabriel, A., additional, Gonzalez-Pacheco, H., additional, Martinez-Sanchez, C., additional, Rahnavardi, M., additional, Keshtkar-Jahromi, M., additional, Vakili, H., additional, Gholamin, S., additional, Razavi, S. M., additional, Gilis-Januszewski, T., additional, Mellwig, K.- P., additional, Wiemer, M., additional, Gilis-Januszewski, J., additional, Peterschroeder, A., additional, Koerfer, J., additional, Horstkotte, D., additional, Vrsalovic, M., additional, Getaldic, B., additional, Vrkic, N., additional, Pintaric, H., additional, Khan, S., additional, Wasan, B., additional, Moretti, L., additional, Grossi, P., additional, Silenzi, S., additional, Testa, M., additional, Candelori, L., additional, Clementi, L. N., additional, Forlini, M., additional, Lando, L., additional, Pezzuoli, M. L., additional, Corradetti, P., additional, Leurent, G., additional, Pennec, P. Y., additional, Filippi, E., additional, Moquet, B., additional, Hacot, J. P., additional, Druelles, P., additional, Rialan, A., additional, Rouault, G., additional, Coudert, I., additional, Le Breton, H., additional, Gevaert, S., additional, Tromp, F., additional, Vandecasteele, E., additional, De Somer, F., additional, Van Belleghem, Y., additional, Bouchez, S., additional, Martens, F., additional, Herck, I., additional, De Pauw, M., additional, Ludka, O., additional, Sepsi, M., additional, Miklik, R., additional, Dusek, L., additional, Tomcikova, D., additional, Garcia-Acuna, J. M., additional, Aguiar-Souto, P., additional, Raposeiras Roubin, S., additional, Agra-Bermejo, R., additional, Jacquet, M., additional, Abu-Assi, E., additional, Gonzalez-Juanatey, J. R., additional, Ibatov, A., additional, Labrova, R., additional, Karlik, R., additional, Lokaj, P., additional, She, Q., additional, Deng, S. B., additional, Huang, S. H., additional, Gu, L. J., additional, Rong, J. I. A. N., additional, Wu, Z. K., additional, Li, Y., additional, Zhang, J., additional, Parascan, L., additional, Campanile, A., additional, Spinelli, L., additional, Santulli, G., additional, Ciccarelli, M., additional, De Gennaro, S., additional, Assante Di Panzillo, E., additional, Trimarco, B., additional, Iaccarino, G., additional, Bobescu, E., additional, Datcu, G., additional, Dobreanu, D., additional, Doka, B., additional, Charniot, J.- C., additional, Cosson, C., additional, Albertini, J. P., additional, Bittar, R., additional, Giral, P., additional, Cherfils, C., additional, Guillerm, E., additional, Bonnefont-Rousselot, D., additional, Rusali, A., additional, Cojocaru, L., additional, Parepa, I., additional, Koizumi, T., additional, Iida, S., additional, Sato, J., additional, Kikutani, T., additional, Muramatsu, T., additional, Nishimura, S., additional, Komiyama, N., additional, Lee, W. P., additional, Ong, B. B., additional, Haralambos, K., additional, Townsend, D., additional, Rees, J. A. E., additional, Williams, E. J., additional, Halcox, J. P., additional, Mcdowell, I., additional, Damjanovic, M., additional, Koracevic, G., additional, Djordjevic-Radojkovic, D., additional, Pavlovic, M., additional, Krstic, N., additional, Ciric-Zdravkovic, S., additional, Stojkovic, A., additional, Perisic, Z., additional, Apostolovic, S., additional, Faustino, A., additional, Seca, L., additional, Barra, S., additional, Caetano, F., additional, Providencia, R., additional, Silva, J., additional, Gomes, P., additional, Costa, G., additional, Costa, M., additional, Leitao-Marques, A., additional, Volkova, A. L., additional, Arutyunov, G. P., additional, Bylova, N. A., additional, Dayter, I. I., additional, Jao, Y. T. F. N., additional, Fang, C. C., additional, Chen, Y., additional, Yu, C. L., additional, Wang, S. P., additional, Valencia, J., additional, Perez-Berbel, P., additional, Ruiz-Nodar, J. M., additional, Pineda, J., additional, Bordes, P., additional, Quintanilla, M., additional, Mainar, V., additional, Sogorb, F., additional, Santos, N., additional, Serrao, M., additional, Cafe, H., additional, Silva, B., additional, Oliveira, R., additional, Caires, G., additional, Drumond, A., additional, Araujo, J., additional, Providencia, R. A., additional, Gomes, P. L., additional, Pais, J. R., additional, Mota, P., additional, Leitao-Marques, A. M., additional, Farhan, S., additional, Jarai, R., additional, Tentzeris, I., additional, Vogel, B., additional, Freynhofer, M. K., additional, Wojta, J., additional, Huber, K., additional, Poli, M., additional, Trambaiolo, P., additional, Corsi, F., additional, De Luca, M., additional, Mustilli, M., additional, Lukic, V., additional, Simonetti, M., additional, Ferraiuolo, G., additional, Lettino, M., additional, Casella, G., additional, Conte, M. R., additional, De Luca, L., additional, Geraci, G., additional, Ceravolo, R., additional, Pani, A., additional, Fradella, G., additional, Schratter, A., additional, Thiele, H., additional, Klemm, T., additional, Demmin, K., additional, Lehmann, D., additional, Mende, M., additional, Schuler, G., additional, Pittl, U., additional, Chernova, A., additional, Nikulina, S. U., additional, Naruke, T., additional, Inomata, T., additional, Yanagisawa, T., additional, Maekawa, E., additional, Mizutani, T., additional, Shinagawa, H., additional, Nishii, M., additional, Takeuchi, I., additional, Takehana, H., additional, Izumi, T., additional, Paulo, C., additional, Mascarenhas, J., additional, Patacho, M., additional, Pimenta, J., additional, Bettencourt, P., additional, Nardai, S., additional, Szabo, G. Y., additional, Berta, B., additional, Edes, I., additional, Merkely, B., additional, Delgado Silva, J., additional, Baptista, R., additional, Faria, R., additional, Trigo, J., additional, Gago, P., additional, Gheorghe, G., additional, Nanea, I. T., additional, Cristea, A., additional, Almarichi, S., additional, Martins, H., additional, Saraiva, F., additional, Jorge, E., additional, Mendes, P. L., additional, Monteiro, P., additional, Costa, S., additional, Franco, F., additional, Providencia, L. A., additional, Nanea, T., additional, Gheorghe, G. S., additional, Visan, S., additional, Paun, N., additional, Gaber, R., additional, Delewi, R., additional, Nijveldt, R., additional, De Bruin, H. A., additional, Hirsch, A., additional, Van Der Laan, A., additional, Bouma, B. J., additional, Tijssen, J. P. G., additional, Van Rossum, A. C., additional, Zijlstra, F., additional, Piek, J. J., additional, Rus, H., additional, Donea, M., additional, Ciurea, C., additional, Ifteni, G., additional, Casolo, G., additional, Chioccioli, M., additional, Magnacca, M., additional, Del Meglio, J., additional, Comella, A., additional, Baratto, M., additional, Lera, J., additional, Salvadori, L., additional, Tessa, C., additional, Vignali, C., additional, Keca, Z., additional, Momcilov Popin, T., additional, Panic, G., additional, White, R., additional, Mateen, F., additional, Weaver, A., additional, Agmon, Y., additional, Okisheva, E., additional, Tsaregorodtsev, D., additional, Sulimov, V., additional, Amat Santos, I. J., additional, Hernandez, C., additional, Tapia, C., additional, Campo, A., additional, Fredman, D., additional, Svensson, L., additional, Rosenqvist, M., additional, Tadel-Kocjancic, S., additional, Radsel, P., additional, Knafelj, R., additional, Gorjup, V., additional, Noc, M., additional, Zima, E., additional, Jenei, Z. S., additional, Kovacs, E., additional, Osztheimer, I., additional, Molnar, L., additional, Horvath, A., additional, Becker, D., additional, Geller, L., additional, Maggi, R., additional, Furukawa, T., additional, Viscardi, V., additional, Brignole, M., additional, Leal, S. R. N., additional, Dores, H., additional, Rosario, I., additional, Monge, J., additional, Carvalho, M. J., additional, Arroja, I., additional, Leitao, A., additional, Fonseca, C., additional, Aleixo, A., additional, Silva, A., additional, Keuleers, S., additional, Herijgers, P., additional, Herregods, M. C., additional, Budts, W., additional, Dubois, C., additional, Meuris, B., additional, Verhamme, P., additional, Flameng, W., additional, Van De Werf, F., additional, Adriaenssens, T., additional, Badran, H., additional, Elnoamany, M., additional, Lolah, T., additional, Olariu, C., additional, Macarie, C., additional, Mollik, M. A. H., additional, Hassan, A. I., additional, Paul, T. K., additional, Haque, M. Z., additional, Jahan, R., additional, Rahmatullah, M., additional, Khatun, M. A., additional, Rahman, M. T., additional, Chowdhury, M. H., additional, Bustamante Munguira, J., additional, Tamayo, E., additional, Garcia-Cuenca, I., additional, Bustamante, E., additional, Gualis, J., additional, Gomez-Martinez, M. L., additional, Florez, S., additional, Gomez-Herreras, J. I., additional, Ramirez Rodriguez, R., additional, Ramirez Rodriguez, A. M., additional, Garcia-Bello, M. A., additional, Hernadez Ortega, E., additional, Caballero Dorta, E., additional, Garcia Quintana, A., additional, Piro Mastraccio, V., additional, Medina Fernandez Aceytuno, A., additional, Assanelli, E., additional, De Metrio, M., additional, Rubino, M., additional, Lauri, G., additional, Cabiati, A., additional, Campodonico, J., additional, Grazi, M., additional, Moltrasio, M., additional, Marana, I., additional, Marenzi, G., additional, Lovlien, M., additional, Schei, B., additional, Picon-Heras, R., additional, Acebal, C., additional, Garcia Rubira, J. C., additional, Vivas Balcones, D., additional, Nunez-Gil, I., additional, Ruiz-Mateos, B., additional, Ibanez, B., additional, Fernandez-Ortiz, A., additional, Vintila, V. D., additional, Enescu, O. A., additional, Stoicescu, C. I., additional, Udroiu, C., additional, Cinteza, M., additional, Tatu - Chitoiu, G., additional, Vinereanu, D., additional, Fresco, C., additional, De Biasio, M., additional, Muser, D., additional, Sappa, R., additional, Morocutti, G., additional, Bernardi, G., additional, Proclemer, A., additional, Fontanella, B., additional, Affatato, A., additional, Ciccarese, C., additional, Sacchini, M., additional, Volpini, M., additional, Bianchetti, F., additional, Verzura, G., additional, Dei Cas, L., additional, Pudil, R., additional, Blaha, V., additional, Vojacek, J., additional, Paraskevaidis, I., additional, Ikonomidis, I., additional, Parissis, J., additional, Papadopoulos, C., additional, Stasinos, V., additional, Bistola, V., additional, Anastasiou-Nana, M., additional, Shochat, M., additional, Shotan, A., additional, Kazatsker, M., additional, Gurovich, V., additional, Asif, A., additional, Noiman, E., additional, Levy, Y., additional, Blondhaim, D., additional, Rabinovich, P., additional, Meisel, S., additional, Petrovic, S., additional, Glasnovic, J., additional, Tomasevic, M., additional, Sakac, D., additional, Obradovic, S., additional, Londono Sanchez, O., additional, Pacreu, S., additional, Torres, L., additional, Mihaylov, G., additional, Shaban, G. M., additional, Trendafilova, E., additional, Krasteva, V., additional, Mudrov, T. S., additional, Didon, J. P., additional, Panageas, V., additional, Vlachos, N., additional, Pernat, A., additional, Radan, I., additional, Mozina, H., additional, Pepi, P., additional, Cionini, F., additional, Baccaglioni, N., additional, Viertel, A., additional, Havers, J., additional, Ballard, G., additional, Groenefeld, G., additional, Branco, L. M., additional, Ferreira, L., additional, Fiarresga, A., additional, Lettieri, L., additional, Reggiani, A., additional, Juarez Prera, R., additional, Blanco Palacios, G., additional, Martin, A.- C., additional, Manzo Silberman, S., additional, Chaib, A., additional, Varenne, O., additional, Allouch, P., additional, Salengro, E., additional, Jegou, A., additional, Margot, O., additional, Spaulding, C., additional, Diego, A., additional, De Miguel, A., additional, Cuellas, C., additional, Fraile, E., additional, Martin, J., additional, Vega, B., additional, Bangueses, R., additional, Fernandez-Vazquez, F., additional, Perez De Prado, A., additional, Leal, S., additional, Correia, M. J., additional, Monge, J. C., additional, Abecasis, J., additional, Garcia-Garcia, C., additional, Subirana, I., additional, Sala, J., additional, Bruguera, J., additional, Valle, V., additional, Sanz, G., additional, Fiol, M., additional, Aros, F., additional, Marrugat, J., additional, Elosua, R., additional, Barra, S. N. C., additional, Leitao Marques, A., additional, Yang, Y. J., additional, Xu, B., additional, Song, G. Y., additional, G, R. L., additional, Aleksic, A., additional, Serpytis, P., additional, Rucinskas, K., additional, Kalinauskas, A., additional, Karvelyte, N., additional, Santos De Sousa, C. I., additional, Ferreira, S., additional, Calaca, J., additional, Lousada, N., additional, Palma Reis, R., additional, Gualandro, D. M., additional, Seguro, L. F. B. C., additional, Braga, F. G. M., additional, Silvestre, O. M., additional, Lage, R. L., additional, Fabri, J., additional, Oliveira, M. T., additional, Urbano Moral, J. A., additional, Torres Llergo, J., additional, Solanilla Rodriguez, R., additional, Sanchez Gonzalez, A., additional, Martinez Martinez, A., additional, Den Uil, C. A., additional, Lagrand, W. K., additional, Van Der Ent, M., additional, Jewbali, L. S. D., additional, Cheng, J. M., additional, Spronk, P. E., additional, Simoons, M. L., additional, Mornos, C., additional, Dragulescu, D., additional, Ionac, A., additional, Guardado, J., additional, Azevedo, O., additional, Fernandes, M., additional, Canario-Almeida, F., additional, Sanfins, V., additional, Pereira, A., additional, Almeida, J., additional, Kaplunova, V. U., additional, Belenkov, Y. N., additional, Privalova, E. V., additional, Fomin, A. A., additional, Suvorov, A. Y., additional, Goodkova, A., additional, Rubakova, M. G., additional, Kuznetsova, I. A., additional, Semernin, E. N., additional, Keshavarzi, F., additional, Kojuri, J., additional, Mikhailov, V. M., additional, Vezhenkova, I. V., additional, Goodkova, A. Y. A., additional, Pavlovic, I., additional, Schwarz, M., additional, Jakl, G., additional, Smetana, P., additional, Perkmann, T., additional, Mayr, A., additional, Mair, J., additional, Klug, G., additional, Schocke, M., additional, Trieb, T., additional, Jaschke, W., additional, Pachinger, O., additional, Metzler, B., additional, Bronze Carvalho, L., additional, Azevedo, J., additional, Andrade, M. L., additional, Relvas, M. J., additional, Coucello, J., additional, Morais, G., additional, Seabra, M., additional, Afamefule, F., additional, Luaces Mendez, M., additional, Teijeiro-Mestre, R., additional, Nunez-Gil, I. J., additional, Leco-Gil, N., additional, Madronal-Cerezo, E., additional, Zannin, I., additional, Ruiz, J., additional, Orynchak, M. A., additional, Vakalyuk, I. I., additional, Vakalyuk, I. P., additional, Berezin, A., additional, Panasenko, T., additional, Cavusoglu, Y., additional, Cavusoglu, A., additional, Unluoglu, I., additional, Tek, M., additional, Demirustu, C., additional, Gorenek, B., additional, Unalacak, M., additional, Birdane, A., additional, Yuksel, F., additional, Ata, N., additional, Halcox, J. P. J., additional, Beyaztas, A., additional, Entok, E., additional, Uslu, I., additional, Schaefer, A., additional, Flierl, U., additional, Seydelmann, N., additional, Bauersachs, J., additional, Calmac, L., additional, Marinescu, S., additional, Tatu Chitoiu, G., additional, Fruntelata, A. G., additional, Hamdi, S., additional, Maazoun, Y., additional, Neji, A., additional, Farhat, O., additional, Majdoub, M., additional, Ben Hamda, K., additional, Maatouk, F., additional, Balanescu, S. M., additional, Nedelciuc, I., additional, Deleanu, D., additional, Ortan, F., additional, Mot, S., additional, Sinnaeve, P. R., additional, Moreels, S., additional, Coosemans, M., additional, Vydt, T., additional, Desmet, W., additional, Tobing, D., additional, Rifnaldi, R., additional, Juzar, D., additional, Firdaus, I., additional, Dharma, S., additional, Irmalita, I., additional, Kalim, H., additional, Bejiqi, R., additional, Retkoceri, R., additional, Bejiqi, H., additional, Kryeziu, L., additional, Kelmendi, M., additional, Borovci, S. H., additional, Victor, S. M., additional, Gnanaraj, A., additional, Deshmukh, R., additional, Mullasari, A. S., additional, Yahalom, M., additional, Kaiyal, R. S., additional, Roguin, N., additional, Bornstein, J., additional, Atar, S., additional, Farah, R., additional, Seca, L. F., additional, Leitao Marques, A. M., additional, Margato, R., additional, Sousa, P., additional, Ribeiro, H., additional, Rocha, L., additional, Correia, A., additional, Moreira, J. I., additional, Carvalho, H. C., additional, Afifi, M., additional, Abed, N., additional, Suarez-Barrientos, A., additional, Vivas, D., additional, Castro-Ferreira, F., additional, Franco, E., additional, Garcia-Rubira, J. C., additional, Fuster, V., additional, Macaya, C., additional, Ibanez Cabeza, B., additional, Salinger, S., additional, Milic, D., additional, Stanojlovic, T., additional, Kostic, T., additional, Khan, M. A., additional, Vrapi, F., additional, Naeem, K., additional, Davar, J., additional, Hristova, K., additional, Pencheva, G., additional, Radeva, R., additional, Milanov, S., additional, Fareed, A., additional, Oraby, M., additional, Nasr, G. M., additional, Maklady, F., additional, Dupouy, P., additional, Sorensen, J. T., additional, Terkelsen, C. J., additional, Lassen, J. F., additional, Trautner, S., additional, Christensen, E. F., additional, Nielsen, T. T., additional, Botker, H. E., additional, Andersen, H. R., additional, Thygesen, K. A., additional, Checco, L., additional, Usmiani, T., additional, Sbarra, P. L., additional, Boffini, M., additional, Saviolo, R., additional, Grasso, C., additional, Conrotto, F., additional, Marchetti, M., additional, Rinaldi, M., additional, Marra, S., additional, Moscoso Costa, F., additional, Ferreira, J., additional, Raposo, L., additional, Aguiar, C., additional, Trabulo, M., additional, Silva, J. A., additional, Marques, V., additional, Swiatkowski, A., additional, Kowalczyk, J., additional, Lenarczyk, R., additional, Chodor, P., additional, Honisz, G., additional, Was, T., additional, Swierad, M., additional, Sredniawa, B., additional, Polonski, L., additional, Kalarus, Z., additional, Postadzhiyan, A. S., additional, Velinov, H., additional, Velchev, V., additional, Hazarbasanov, D., additional, Apostolova, M., additional, Finkov, B., additional, Petrovic, M., additional, Jovelic, A., additional, Canji, T., additional, Srdanovic, I., additional, Popov, T., additional, Golubovic, M., additional, Pavlovic, K., additional, Cemerlic-Adjic, N., additional, Bro-Jeppesen, J., additional, Kjaergaard, J., additional, Wanscher, M. C., additional, Nielsen, S. L., additional, Rasmussen, L. S., additional, Hassager, C., additional, Khan, M., additional, Crolla, E., additional, Morley, H., additional, Akeroyd, L., additional, Beaini, Y., additional, Morley, C., additional, Bekeredjian, R. H., additional, Krumsdorf, U., additional, Rottbauer, W., additional, Katus, H. A., additional, Pleger, S., additional, Botelho, A., additional, Quintal, N., additional, Faria, P., additional, Gomes, S., additional, Roussel, J. C., additional, Senage, T., additional, Perigaud, C., additional, Habash, O., additional, Michel, M., additional, Treilhaud, M., additional, Despins, P., additional, Trochu, J. N., additional, Baron, O., additional, Duveau, D., additional, Kitsiou, A. N., additional, Giannakopoulos, K., additional, Papadimitriou, G., additional, Karas, S., additional, Babic, Z., additional, Nikolic Heitzler, V., additional, Milicic, D., additional, Bergovec, M., additional, Raguz, M., additional, Mirat, J., additional, Strozzi, M., additional, Plazonic, Z., additional, Giunio, L., additional, Steiner, R., additional, Freynhofer, M., additional, Brozovic, I., additional, Bruno, V., additional, Leherbauer, L., additional, Djurkovic, M., additional, Willheim, M., additional, Huebl, W., additional, Hahne, S., additional, Kozanli, I., additional, Kalla, K., additional, Geppert, A., additional, Unger, G., additional, Simoes Marques Assuncao Caetano, A. F., additional, Faustino, C., additional, Ariza Sole, A., additional, Sanchez Salado, J. C., additional, Lorente Tordera, V., additional, Martinez Garcia, V., additional, Salazar Mendiguchia Y Garcia, J., additional, Gomez Hospital, J. A., additional, Maristany Daunert, J., additional, Berdejo Gago, F. J., additional, Esplugas Oliveras, E., additional, Brzozowska-Czarnek, A., additional, Urbanik, A., additional, Kakouros, N., additional, Kakouros, S., additional, Lekakis, J., additional, Rizos, J., additional, Kokkinos, D., additional, Venevtseva, J., additional, Melnikov, A., additional, Valiahmetov, M., additional, Gomova, T., additional, Perelomova, I., additional, Ferrer Hita, J. J., additional, Bosa-Ojeda, F., additional, Sanchez-Grande-Flecha, A., additional, Yanes-Bowden, G., additional, Vargas-Torres, M. J., additional, Rodriguez-Gonzalez, A., additional, Rubio-Iglesias-Garcia, C., additional, Dominguez-Rodriguez, A., additional, Enjuanes-Grau, C., additional, Marrero-Rodriguez, F., additional, Suceveanu, A. I., additional, Suceveanu, A., additional, Mazilu, L., additional, Alexandrescu, L., additional, Dumitru, E., additional, Miu, V., additional, Jitari, V., additional, Voinea, F. L., additional, Balachandran, K. P., additional, Schofield, R., additional, Sankaranarayanan, R., additional, Helm, K., additional, Crowe, C., additional, Singh, R., additional, Mcdonald, J., additional, Chuen, M. J., additional, Kobusiak-Prokopowicz, M., additional, Preglowska, M., additional, Mysiak, A., additional, Doi, T., additional, Sakoda, T., additional, Akagami, T., additional, Naka, T., additional, Tsujino, T., additional, Masuyama, T., additional, Ohyanagi, M., additional, Kume, N., additional, Mitsuoka, H., additional, Hayashida, K., additional, Tanaka, M., additional, Biasucci, L. M., additional, Della Bona, R., additional, Biasillo, G., additional, Leo, M., additional, Zaninotto, M., additional, Plebani, M., additional, Crea, F., additional, Dellabona, R., additional, Gok, B., additional, Unalir, A., additional, Timuralp, B., additional, Nikulina, N., additional, Yakushin, S. S., additional, Furmenko, G. I., additional, Akinina, S. A., additional, Ingrid, R., additional, Bronze, L., additional, Djambazov, S., additional, Zhivkov, A., additional, Maznev, I., additional, Ingeliev, M., additional, Slavov, R., additional, Cvetkova, N., additional, Patarinski, V., additional, Groch, L., additional, Horak, J., additional, Dimitrov, N., additional, Hayrapetyan, H. G., additional, Cabanas-Grandio, P., additional, Pena-Gil, C., additional, Mc Keag, N. A., additional, Mc Cann, C. J., additional, Cardwell, C., additional, Young, I. S., additional, Mikhalchikova, N., additional, Burova, N., additional, Zaccaria, M., additional, Palmisano, P., additional, Palumbo, V., additional, Ciccone, M. M., additional, Favale, S., additional, Chen, K. C., additional, Yin, W. H., additional, Liu, J. H., additional, Goncalves, S., additional, Santos, J. F., additional, Amador, P., additional, Soares, L. N., additional, Zahidova, K., additional, Guliyev, F., additional, Zahidov, N., additional, Carrilho-Ferreira, P., additional, Marques, J. S., additional, Carvalho De Sousa, J., additional, Uthoff, H., additional, Thalhammer, C., additional, Potocki, M., additional, Reichlin, T., additional, Noveanu, M., additional, Aschwanden, M., additional, Staub, D., additional, Arenja, N., additional, Socrates, T., additional, Mueller, C., additional, Zhao, Y., additional, Wu, X., additional, Xue, Q., additional, Gao, L., additional, Lin, H., additional, Wang, S., additional, Watanabe, K., additional, Kawamura, A., additional, Seko, T., additional, Omura, A., additional, Sakabe, S., additional, Kasai, A., additional, Starodubova, A. V., additional, Storozhakov, G., additional, Kisliak, O., additional, Hautieva, F., additional, Tursheva, M., additional, Fedotova, N., additional, Di Maio, R. C., additional, Mclaughlin, J., additional, Allen, J. D., additional, Anderson, J. M. C., additional, Khaled Nagi, H., additional, Tayeh, O., additional, Farok, W., additional, Mousa, A., additional, Neuzil, P., additional, Skoda, J., additional, Petru, J., additional, Sediva, L., additional, Kralovec, S., additional, Holy, F., additional, Holdova, K., additional, Jehlicka, P., additional, Plasil, P., additional, Reddy, V. Y., additional, Alabakovska, S., additional, Labudovic, D., additional, Jovanova, S., additional, Tosheska, K., additional, Alabakovski, M., additional, Jeevaratnam, K., additional, Tee, S. P., additional, Zhang, Y., additional, Guzadhur, L., additional, Gurung, I. S., additional, Duehmke, R., additional, Grace, A. A., additional, Lei, M., additional, Huang, C. L., additional, Ishibashi, Y., additional, Yamauchi, M., additional, Akashi, Y., additional, Musha, H., additional, Miyake, F., additional, Hnatek, T., additional, Kamenik, L., additional, Sedlon, P., additional, Luxova, J., additional, Steuerova, B., additional, Skvaril, J., additional, Cernohous, M., additional, Zavoral, M., additional, Ratkovic, N., additional, Nemanja Djenic, N. R., additional, Aleksandra Jovelic, A. J., additional, Slobodan Obradovic, S. O., additional, Branko Gligic, B. G., additional, Kletsiou, E., additional, Giannakopoulou, M., additional, Bozas, E., additional, Iliodromitis, E. K., additional, Papathanassoglou, E. D. E., additional, Anton, M., additional, Anton, G., additional, Muraru, M., additional, Salinger Martinovic, S., additional, Radosavljevic, M., additional, Stanojevic, D., additional, Zivkovic, M., additional, Pessoa, T., additional, Aspromonte, N., additional, Ronco, C., additional, Tubaro, M., additional, Santini, M., additional, Colivicchi, F., additional, Aiello, A., additional, Cruz, D., additional, Anzoletti Boscolo, A., additional, Vianello, G., additional, Valle, R., additional, Parspour, A., additional, Watkins, S., additional, Datta, D., additional, Nikishin, A. G., additional, Pirnazarov, M. M., additional, Nurbaev, T. A., additional, Motovska, Z., additional, Fischerova, M., additional, Osmancik, P., additional, Maly, M., additional, Widimsky, P., additional, Pavli, E., additional, Dibra, A., additional, Mehilli, J., additional, Dibra, L., additional, Schoemig, A., additional, Kastrati, A., additional, Carmo, P., additional, Almeida, M., additional, Teles, R., additional, Goncalves, P., additional, Brito, J., additional, D'ascenzo, F., additional, Gonella, A., additional, Longo, G., additional, Pullara, A., additional, Moretti, C., additional, Sciuto, F., additional, Omede', P., additional, Biondi Zoccai, G., additional, Trevi, G. P., additional, Sheiban, I., additional, Cafe, H. M., additional, Pereira, D., additional, Freitas, D., additional, Ortiz Berbel, D., additional, Rabasa Baraibar, J. M., additional, Leone, A. M., additional, De Caterina, A., additional, Aurelio, A., additional, Sciahbasi, A., additional, Lioy, E., additional, Trani, C., additional, Burzotta, F., additional, Porto, I., additional, Rebuzzi, A. G., additional, Trusinskis, K., additional, Juhnevica, D., additional, Strenge, K., additional, Sondore, D., additional, Kumsars, I., additional, Jegere, S., additional, Narbute, I., additional, Grave, A., additional, Zakke, I., additional, Erglis, A., additional, Ferrari, C., additional, Bartorelli, A. L., additional, Saeed, M., additional, Cozma, D., additional, Pescariu, S., additional, Dragulescu, S. I., additional, Kamal, H. S., additional, Abdelfattah, A., additional, Abdelbary, A. M., additional, Elassar, H., additional, Naggar, A., additional, Khaled, M., additional, Fareed, A. M., additional, Pernes, J. M., additional, Gaux, J. C., additional, Prull, M. W., additional, Sasko, B., additional, Wirdemann, H., additional, Bittlinsky, A., additional, Butz, T., additional, Trappe, H. J., additional, Perazzolo Marra, M., additional, Cacciavillani, L., additional, Marzari, A., additional, De Lazzari, M., additional, Turri, R., additional, China, P., additional, Corbetti, F., additional, Iliceto, S., additional, Stazhadze, L. L., additional, Spiridonova, E. A., additional, Bulanova, N. A., additional, Ermolaev, A. A., additional, Savic, L., additional, Mrdovic, I., additional, Krljanac, G., additional, Perunicic, J., additional, Asanin, M., additional, Lasica, R., additional, Matic, M., additional, Vasiljevic, Z., additional, Ostojic, M., additional, Tichy, M., additional, Andrys, C., additional, Conti, A., additional, Poggioni, C., additional, Viviani, G., additional, Bulletti, F., additional, Boni, V., additional, Luzzi, M., additional, Vicidomini, S., additional, Donati, M., additional, Del Taglia, B., additional, Pini, R., additional, Sousa, O., additional, Fontes-Carvalho, R., additional, Caeiro, D., additional, Dias Ferreira, N., additional, Silva, G., additional, Pereira, E., additional, Ribeiro, J., additional, Albuquerque, A., additional, Gama Ribeiro, V., additional, Murai, M., additional, Takeda, Y., additional, Shinmyo, T., additional, Tanigawa, J., additional, Hazui, H., additional, Nakakohji, T., additional, Ohishi, Y., additional, Hoshiga, M., additional, Ishihara, T., additional, Hanafusa, T., additional, Belohlavek, J., additional, Rohn, V., additional, Kunstyr, J., additional, Lips, M., additional, Semrad, M., additional, Mlejnsky, F., additional, Tosovsky, J., additional, Linhart, A., additional, Lindner, J., additional, Sablik, Z., additional, Samborska-Sablik, A., additional, Drozdz, J., additional, Gaszynski, W., additional, Izquierdo-Gomez, M. M., additional, Juarez-Prera, R., additional, Blanco-Palacios, G., additional, Lakhdar, R., additional, Drissa, M., additional, Jedaida, B., additional, Drissa, H., additional, Sampaio, F., additional, Hsin, H.- T., additional, Huang, J.- H., additional, Chiu, K.- M., additional, Chen, Z.- S., additional, Lin, P.- C., additional, Chen, L.- Y., additional, Chu, S.- H., additional, Efthimiadis, I., additional, Skendros, P., additional, Sarantopoulos, A., additional, Boura, P., additional, Van Der Laan, A. M., additional, Van Der Vleuten, P. A., additional, Klees, M., additional, Tijssen, J. G. P., additional, Backus, B. E., additional, Six, A. J., additional, Kelder, J. H., additional, Mosterd, A., additional, Mast, E. G., additional, Mast, T. P., additional, Braam, R., additional, Tio, R., additional, Veldkamp, R., additional, Doevendans, P. A., additional, Paarup Dridi, N., additional, Holmvang, L., additional, Engstroem, T., additional, Rekik, S., additional, Brunet, J., additional, Hager, F. X., additional, Bayet, G., additional, Meille, L., additional, Quatre, J. M., additional, Sainsous, J., additional, Chu, P.- H., additional, Tang, C.- H., additional, Pogosova, N., additional, Koltunov, I. E., additional, Sapunova, I. D., additional, Vigodin, V. A., additional, Uhliar, R., additional, Schmidt, A., additional, Brockmeyer, B., additional, Suzuki, A., additional, Eki, Y., additional, Higuchi, H., additional, Yukawa, A., additional, Yamauchi, R., additional, Sato, Y., additional, Endo, Y., additional, Salazar Mendigucha Garcia, J., additional, Homs Vila, S., additional, Cequier Fillat, A., additional, Andion Ogando, R., additional, Sandin Fuentes, M., additional, Vegas Valle, J. M., additional, Gonzalez Garcia, I. A., additional, Duro Aguado, I. A., additional, Palomino Doza, A. J., additional, Gomez Salvador, I., additional, San Roman Calvar, J. A., additional, Mamarasulov, T. M., additional, Todorovic, L., additional, Cherneva, Z. C. H., additional, Denchev, S. D., additional, Heltai, K., additional, Boytsov, A., additional, Nikulina, N. N., additional, Zanna, D., additional, Marangelli, V., additional, Caiati, C., additional, Picon Heras, R., additional, Loureiro, M. J., additional, Urazovskaya, I., additional, Vinogradova, D., additional, Vasilieva, E., additional, Shpektor, A., additional, Conti, E., additional, Musumeci, M. B., additional, Lauri, F. M., additional, Dito, E., additional, De Giusti, M., additional, Lallo, A., additional, Fusco, D., additional, Davoli, M., additional, Volpe, M., additional, Autore, C., additional, Gamra, H., additional, Dridi, Z., additional, Hassine, M., additional, Addad, F., additional, Gherissi, I., additional, Reda, A., additional, Mahjoub, M., additional, Bouraoui, S., additional, Abdennadher, M., additional, Betbout, F., additional, Mota, P. M. F. P., additional, Silva, J. D., additional, Jankovic Tomasevic, R., additional, Djordjevic, V., additional, Djordjevic Radojkovic, D., additional, Scafa Udriste, A., additional, Fruntelata, A., additional, Gainoiu, E., additional, Bogdan, S., additional, Zamfir, D., additional, Teodorescu, C., additional, Guran, M., additional, Constantinescu, D., additional, Konopka, A., additional, Banaszewski, M., additional, Wojtkowska, I., additional, Stepinska, J., additional, Vidergold, J. V., additional, Osipova, I. V., additional, Tavrovskaya, T. V., additional, Galkina, J. V., additional, Timofeev, A. V., additional, Vorobyov, R. I., additional, Vorobyova, E. N., additional, Matos, L., additional, Carvalho, A. C. C., additional, Oliveira, W., additional, Cintra, F., additional, Poyares, D., additional, Andersen, M., additional, Martins, R., additional, Tufik, S., additional, Ostadal, P., additional, Brada, J., additional, Horakova, S., additional, Mlcek, M., additional, Hrachovina, V., additional, Kittnar, O., additional, Gorudko, I. V., additional, Buko, I. V., additional, Cherenkevich, S. N., additional, Polonetsky, L. Z., additional, Plotkin, V. Y., additional, Timoshina, M. A., additional, Azanchevskaya, S. V., additional, Chromov-Borisov, N. N., additional, Vorlat, A., additional, Snoep, L., additional, Claeys, M. J., additional, Vrints, C. J., additional, Palazzuoli, A., additional, Caputo, M., additional, Quatrini, I., additional, Calabro, A., additional, Antonelli, G., additional, Campagna, M. S., additional, Franci, B., additional, Nuti, R., additional, Maisel, A., additional, Negrini, M., additional, Minora, T., additional, Marino, P., additional, Seregni, R., additional, Tavlueva, E., additional, Barbarash, O., additional, Barbarash, L., additional, Janota, T., additional, Kudlicka, J., additional, Malik, K., additional, Wichterle, D., additional, Hradec, J., additional, Body, R., additional, Carley, S. D., additional, Mcdowell, G., additional, Nuttall, M., additional, Wibberley, C., additional, France, M., additional, Cruickshank, J. K., additional, Mackway-Jones, K., additional, Leon, M., additional, Cozma, C., additional, Mitu, F., additional, Almeida, D. R., additional, Dias, C. B., additional, Burazor, I., additional, Burazor, M., additional, Krstic, M., additional, Lazovic, M., additional, Vukmanovic, M., additional, Djordjevic, J., additional, Radovanovic, Z., additional, Ilic, D., additional, Bosnjakovic, P., additional, Ferreira, A. C., additional, Mateus, P. S., additional, Fontes, P., additional, Teixeira, T., additional, Conte, G., additional, Menozzi, A., additional, Solinas, E., additional, Bolognesi, M. G., additional, Tadonio, I., additional, Mantovani, F., additional, Cattabiani, A., additional, Vignali, L., additional, Ardissino, D., additional, Tautu, O., additional, Alexandrescu, A., additional, Niculescu, R., additional, Jankovic, R., additional, Bozinovic, N., additional, Santos, C., additional, Costa, F., additional, Cardoso, G., additional, Correia, I., additional, Fountoulaki, K., additional, Kastellanos, S., additional, Voltirakis, E., additional, Kokotos, A., additional, Michalakeas, C., additional, Kontsas, K., additional, Hasioti, K., additional, Iliodromitis, E. T., additional, Sandin Fuentes, M. G., additional, Zatarain Nicolas, E., additional, Martinez Uruena, N., additional, Alvarado Montes De Oca, M., additional, Dytrych, V., additional, Kovarnik, T., additional, Smid, O., additional, Kral, A., additional, Aroutunov, A. G., additional, Intwala, S., additional, Jegere, I., additional, Shaalan, H. S. H., additional, Pagava, Z., additional, Agladze, R., additional, Shakarishvili, R., additional, Sharashidze, N., additional, Gujejiani, L., additional, Saatashvili, G., additional, Katova, T. Z., additional, Kostova, V., additional, Simova, Y., additional, Vukotic, S., additional, Rafajlovski, S., additional, Romanovic, R., additional, Antonijevic, N., additional, Gligic, B., additional, Hutyra, M., additional, Skala, T., additional, Horak, D., additional, Vindis, D., additional, Taborsky, M., additional, Contine, A., additional, Del Pinto, M., additional, Angeli, F., additional, Verdecchia, P., additional, Borgognoni, F., additional, Grikstaite, E., additional, Pantano, P., additional, Ambrosio, G., additional, Cavallini, C., additional, Bonanad, C., additional, Sanchis, J., additional, Bodi, V., additional, Nunez, J., additional, Bosch, X., additional, Heras, M., additional, Pellicer, M., additional, Llacer, A., additional, Adao, L., additional, Oliveira, M., additional, Goncalves, H., additional, Primo, J., additional, Gama, V., additional, Lombardi, C., additional, Metra, M., additional, Bugatti, S., additional, Pasotti, E., additional, Quinzani, F., additional, Adamo, M., additional, Villa, C., additional, Rovetta, R., additional, Manerba, A., additional, Mariani, M., additional, Dushpanova, A., additional, Baroni, M., additional, Cerone, E., additional, Nardelli, A., additional, Gianetti, J., additional, Berti, S., additional, Feliciano, F., additional, Soares, R., additional, Santos, S., additional, Kruger, A., additional, Vondrakova, D., additional, Herget, J., additional, Navarro, C., additional, Cromie, N. A., additional, Adgey, J. A. A., additional, Caeiro Pereira, D., additional, Braga, P., additional, Fontes Carvalho, R., additional, Rodrigues, A., additional, Goncalves, M., additional, Simoes, L., additional, and Borisov, K. V., additional

Published
2010
Full Text
View/download PDF

22. In Situ Polymerization Electrospinning of Amine-Epoxy/Poly(vinyl alcohol) Nanofiber Webs for Direct CO 2 Capture from the Air.

Author

Okada C, Hou Z, Imoto H, Naka K, Kikutani T, and Takasaki M

Abstract

To achieve carbon neutrality by 2050, there is a growing need to actively capture carbon dioxide (CO 2 ) from the atmosphere. As a method to capture CO 2 directly from the atmosphere, direct air capture (DAC) is attracting attention and amine-based compounds have been extensively studied as CO 2 adsorbents. In this research, we developed thermosetting DAC nanofibers with excellent low-temperature desorption properties and good heat resistance by polymerizing an amine with epoxy. For the fabrication of epoxy-cross-linked amine nanofibers through the electrospinning process, poly(vinyl alcohol) (PVA) was added for the improvement of spinnability, and the direct spin-line heating was conducted for the in situ thermal polymerization. As a result, nanofiber webs with fiber diameters of approximately 300-400 nm were fabricated successfully. The investigation of the CO 2 adsorption and desorption performance of the obtained amine/epoxy/PVA (AE/PVA) nanofiber webs verified the high adsorption amount of 1.8 mmol/g at a CO 2 concentration of 400 ppm. Additionally, 93% of adsorbed CO 2 could be desorbed at a low temperature of 65 °C. These results suggested the possibility of low-energy-consumption CO 2 recovery. By improving the adsorption rate and by making desorption possible at low temperatures, the adsorption/desorption cycle can be repeated more quickly, increasing the amount of CO 2 that can be recovered in a day. The prepared webs also exhibited an excellent adsorption retention ratio of 75% after 100 h of operation at 85 °C, while general amine-filled mesoporous silica usually shows a retention ratio of only 13%. In addition, FT-IR, DSC, and elemental analysis of amine/epoxy/PVA nanofibers were carried out to analyze the reaction mechanism during fiber production. It was revealed that PVA was not involved in the reaction, and as in the bulk state, almost all primary amines were converted to secondary amines due to the in situ polymerization of amines and epoxy to form nanofibers., Competing Interests: The authors declare no competing financial interest., (© 2024 The Authors. Published by American Chemical Society.)

Published
2024
Full Text
View/download PDF

23. Oral frailty is associated with mortality independently of physical and psychological frailty among older adults.

Author

Watanabe D, Yoshida T, Watanabe Y, Yokoyama K, Yamada Y, Kikutani T, Yoshida M, Miyachi M, and Kimura M

Subjects
Humans, Aged, Female, Male, Prospective Studies, Aged, 80 and over, Japan epidemiology, Proportional Hazards Models, Risk Factors, Surveys and Questionnaires, Oral Health, Frailty mortality, Frailty psychology, Frail Elderly psychology, Geriatric Assessment methods
Abstract

Background: Although oral frailty is independently associated with an increased risk of mortality, evidence for the usefulness of screening tools for oral frailty is less than that for physical frailty screening tools. We aimed to investigate the relationship between oral frailty and mortality in older adults., Methods: This prospective cohort study included 11,374 adults aged ≥65 years, who provided valid responses to a baseline mail survey questionnaire from the Kyoto-Kameoka study. Oral frailty status was evaluated using the Oral Frailty Index-8 (range, 0 [best] to 10 [worst]). Participants were classified into four categories according to the Oral Frailty Index-8: robust (score, 0-2), oral pre-frailty (score, 3), oral frailty (score, 4-6), and oral severe frailty (score ≥ 7). Physical and psychological frailty were evaluated using the validated frailty-screening index and defined as a score of ≥3 out of a possible 5 points. Mortality data were collected from 30 July 2011 to 30 November 2016. Hazard ratios (HR) for all-cause mortality were calculated using a multivariable Cox proportional hazards model., Results: During the 5.3-year median follow-up period (57,157 person-years), 1184 deaths were recorded. After adjusting for confounders, including physical and psychological frailty, medical history, and lifestyle, in comparison with a robust oral status, oral pre-frailty (HR, 1.29; 95 % confidence interval [CI], 1.02-1.63), oral frailty (HR, 1.22; 95 % CI, 1.01-1.48), and oral severe frailty (HR, 1.43; 95 % CI, 1.16-1.76) were associated with higher HRs of mortality (p for trend = 0.002)., Conclusion: Oral frailty is associated with mortality independent of physical and psychological frailty in older adults. The Oral Frailty Index-8 may be useful for identifying individuals at high risk of mortality., Competing Interests: Declaration of competing interest None., (Copyright © 2024 The Authors. Published by Elsevier Inc. All rights reserved.)

Published
2024
Full Text
View/download PDF

24. The importance of taste on swallowing function.

Author

Okubo M, Morishita M, Odani T, Sakaguchi H, Kikutani T, and Kokabu S

Abstract

The world's population is aging. Pneumonia is the leading cause of death among the older adults, with aspiration pneumonia being particularly common. Aspiration pneumonia is caused by a decline in swallowing function. Causes can include age-related sarcopenia of swallowing muscles, cognitive decline, cerebrovascular and other diseases or even changes in individual taste preference. Currently, the main treatment approach for dysphagia is resistance training of swallowing-related muscles. This approach has not been effective and establishment of novel methods are required. In this review, we introduce and discuss the relationship between taste, taste preference, carbonation and swallowing function. Taste and preference improve swallowing function. Recently, it has been shown that a carbonated beverage that combines the functionality of a thickening agent, the appeal of taste, and the stimulation of carbonation improves swallowing function. This may be very useful in the recovery of swallowing function. It is important to note that deliciousness is based not only on taste and preference, but also on visual information such as food form. Umami taste receptors are expressed not only in taste buds but also in skeletal muscle and small intestine. These receptors may be involved in homeostasis of the amino acid metabolic network, i.e., the process of amino acid ingestion, intestine absorption, and storage in skeletal muscle. Proper stimulation of umami receptors in organs other than taste buds may help maintain nutritional status and muscle mass. Umami receptors are therefore a potential therapeutic target for dysphagia., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2024 Okubo, Morishita, Odani, Sakaguchi, Kikutani and Kokabu.)

Published
2024
Full Text
View/download PDF

25. Adherence to the food-based Japanese dietary guidelines and prevalence of poor oral health-related quality of life among older Japanese adults in the Kyoto-Kameoka study.

Author

Watanabe D, Kurotani K, Yoshida T, Nanri H, Watanabe Y, Date H, Itoi A, Goto C, Ishikawa-Takata K, Kikutani T, Yoshida M, Fujita H, Yamada Y, and Kimura M

Subjects
Aged, Humans, Cross-Sectional Studies, Prevalence, Nutrition Policy, Japan epidemiology, Quality of Life, East Asian People
Abstract

Although better diet quality is inversely related to the risk of geriatric disorders, the association of adherence to dietary guidelines with oral health-related quality of life (OHRQoL) is unclear. We aimed to investigate this association in older Japanese adults. This cross-sectional study included 7984 Japanese participants aged ≥ 65 years from the population-based Kyoto-Kameoka study. Dietary intake was estimated using a validated self-administered FFQ. The scores for adherence to the Japanese Food Guide Spinning Top (range: 0 (worst) to 80 (best)) were calculated. These scores were stratified into quartiles (Qs). Poor OHRQoL was defined as a score ≤ 50 using a 12-item Geriatric Oral Health Assessment Index. The OR and 95 % CI were calculated using multivariable logistic regression and the spline model. Higher adherence score was associated with a lower prevalence of poor OHRQoL (Q1-Q4:36·0 %, 32·1 %, 27·9 % and 25·1 %, respectively). An inverse association was found between the score for adherence to the food-based Japanese dietary guidelines and the OR of poor OHRQoL among all the participants (Q1: reference; Q2: OR, 0·87 (95 % CI: 0·75, 1·00); Q3: OR, 0·77 (95 % CI: 0·66, 0·90); Q4: OR, 0·72 (95 % CI: 0·62, 0·85); P for trend < 0·001). These relationships were similar to the results in the spline model. Higher adherence to the food-based Japanese dietary guidelines is inversely associated with the prevalence of poor OHRQoL in older adults. Our results may provide useful insights to improve and maintain oral health.

Published
2022
Full Text
View/download PDF

26. Verification of the Influence of Processing History through Comparing High-Speed Melt Spinning Behavior of Virgin and Recycled Polypropylene.

Author

Takarada W, Barique MA, Kunimitsu T, Kameda T, and Kikutani T

Abstract

A 'model' material of recycled polypropylene (PP) was prepared through the injection molding process, and the effect of processing history on the polymer characteristics was investigated through the high-speed melt spinning of virgin and recycled PP. On-line measurement of the thinning behavior of the spin-line revealed the downstream shift of solidification point for the recycled PP at the take-up velocity of 1.0 km/min, indicating the suppression of flow-induced crystallization. The difference was not clear at higher take-up velocities of up to 5 km/min. For any identical take-up velocity, no clear difference in the stress-strain curves and birefringence of the fibers from virgin and recycled PP could be observed, whereas the detailed investigation on the variation of relative amount of c -axis and a*-axis oriented crystals in the fibers prepared at varied take-up velocities suggested the deterioration of flow-induced crystallization at 1.0 km/min. It was speculated that the processing history induced the lowering of the entanglement density, which affected the melt spinning and crystallization behavior. An undistinguishable difference between the virgin and recycled PP at increased take-up velocities suggested the existence of an optimum elongational strain rate for the detection of the different states of molecular entanglement.

Published
2022
Full Text
View/download PDF

27. Laser-Assisted Melt Electrospinning of Poly(L-lactide-co-ε-caprolactone): Analyses on Processing Behavior and Characteristics of Prepared Fibers.

Author

Hou Z, Kobayashi H, Tanaka K, Takarada W, Kikutani T, and Takasaki M

Abstract

The laser-assisted melt electrospinning (LES) method was utilized for the preparation of poly(L-lactide-co-ε-caprolactone) (PLCL) fibers. During the process, a carbon dioxide laser was irradiated, and voltage was applied to the raw fiber of PLCL. In situ observation of fiber formation behavior revealed that only a single jet was formed from the swelling region under the conditions of low laser power and applied voltage and feeding rate, whereas multiple jets and shots were produced with increases in these parameters. The formation of multiple jets resulted in the preparation of thinner fibers, and under the optimum condition, an average fiber diameter of 0.77 μm and its coefficient of variation of 17% was achieved without the formation of shots. The estimation of tension and stress profiles in the spin-line was also carried out based on the result of in situ observation and the consideration that the forces originated from surface tension, electricity, air friction, and inertia. The higher peak values of tension and stress appearing near the apex of the swelling region corresponded to the formation of thinner fibers for the condition of single-jet ejection. Analyses of the molecular orientation and crystallization of as-spun fibers revealed the formation of a wide variation of higher order structure depending on the spinning conditions.

Published
2022
Full Text
View/download PDF

28. Two case reports using a proposed oral risk assessment tool for older people near the end of life.

Author

Tanaka K, Kikutani T, Tohara T, Sato S, Ichikawa Y, Takahashi N, and Tamura F

Subjects
Aged, Humans, Male, Risk Assessment, Death
Abstract

Objectives: We developed a prototype technique that expresses the need for intervention and the effectiveness of the treatment when "not being at risk of injury to the oral cavity or to general health" due to the presence of teeth or prostheses is taken as the desired outcome of dental treatment for older people near the end of life. The objective of this study was to use the prototype risk assessment matrix to identify the risk for each patient according to their course and show the effectiveness of treatment., Material and Methods: We produced a prototype Dental Risk Map (Dental R-map) based on the risk map method of risk management. Risk is classified into three levels according to the level of tolerability: (A) Risk for which watchful waiting should be included among measures to be considered; (B) risk for which intervention should be considered; or (C) risk requiring urgent intervention., Results: We report the application of this technique to two men in their 80s. Both were assessed as risk tolerability Level C, requiring immediate intervention. Dental treatment eliminated this risk in one and reduced it to Level B in the other., Conclusions: We developed the prototype Dental R-map to identify oral risks and indicate the need for intervention to address these risks and the effectiveness of treatment for older people near the end of life. We used the Dental R-map for two patients and successfully avoided oral risks that might cause physical injury in both cases until their deaths., (© 2022 The Authors. Clinical and Experimental Dental Research published by John Wiley & Sons Ltd.)

Published
2022
Full Text
View/download PDF

29. Planar or Biaxial Stretching of Poly(ethylene terephthalate) Fiber Webs Prepared by Laser-Electrospinning.

Author

Tokuda T, Tsuruda R, Hara T, Hou Z, Kobayashi H, Tanaka K, Takarada W, Kikutani T, Hinestroza JP, Razal JM, and Takasaki M

Abstract

In this work, laser-heated electrospinning (LES) process using carbon dioxide laser was explored as an eco-friendly method for producing ultrafine fibers. To enhance the thinning of fibers and the formation of fiber structure, planar or equibiaxial stretching and subsequent annealing processes were applied to poly(ethylene terephthalate) (PET) fiber webs prepared by LES. The structure and properties of the obtained webs were investigated. Ultrafine fiber webs with an average diameter of approximately 1 μm and a coefficient of variation of 20-25% were obtained when the stretch ratios in the MD (machine direction) × TD (transverse direction) were 3 × 1 and 3 × 3 for the planar and equibiaxial stretching, respectively. In the wide-angle X-ray diffraction analysis of the web samples, preferential orientation of crystalline c-axis were confirmed along the MD for planar stretching and only along the web plane for equibiaxial stretching, which was in contrast to the stretching of film samples, where additional preferential orientation of benzene ring along the film plane proceeded. The results obtained suggest that PET fiber webs fabricated through LES and subsequent planar or biaxial stretching processes have potential for a wide variety of applications, such as packaging and battery separator materials.

Published
2022
Full Text
View/download PDF

30. Bamboo Charcoal/Poly(L-lactide) Fiber Webs Prepared Using Laser-Heated Melt Electrospinning.

Author

Hou Z, Itagaki N, Kobayashi H, Tanaka K, Takarada W, Kikutani T, and Takasaki M

Abstract

Although several studies have reported that the addition of bamboo charcoal (BC) to polylactide (PLA) enhances the properties of PLA, to date, no study has been reported on the fabrication of ultrafine BC/poly(L-lactide) (PLLA) webs via electrospinning. Therefore, ultrafine fiber webs of PLLA and BC/PLLA were prepared using PLLA and BC/PLLA raw fibers via a novel laser electrospinning method. Ultrafine PLLA and BC/PLLA fibers with average diameters of approximately 1 μm and coefficients of variation of 13-23 and 20-46% were obtained. Via wide-angle X-ray diffraction (WAXD) analysis, highly oriented crystals were detected in the raw fibers; however, WAXD patterns of both PLLA and BC/PLLA webs implied an amorphous structure of PLLA. Polarizing microscopy images revealed that the webs comprised ultrafine fibers with uniform diameters and wide variations in birefringence. Temperature-modulated differential scanning calorimetry measurements indicated that the degree of order of the crystals in the fibers was lower and the molecules in the fibers had higher mobilities than those in the raw fibers. Transmittance of BC/PLLA webs with an area density of 2.6 mg/cm 2 suggested that the addition of BC improved UV-shielding efficiencies.

Published
2021
Full Text
View/download PDF

31. COVID-19 Infection-Related Weight Loss Decreases Eating/Swallowing Function in Schizophrenic Patients.

Author

Kikutani T, Ichikawa Y, Kitazume E, Mizukoshi A, Tohara T, Takahashi N, Tamura F, Matsutani M, Onishi J, and Makino E

Subjects
Aged, COVID-19 physiopathology, COVID-19 psychology, Deglutition Disorders physiopathology, Deglutition Disorders psychology, Eating physiology, Eating psychology, Feeding and Eating Disorders physiopathology, Feeding and Eating Disorders psychology, Female, Humans, Male, Middle Aged, Nutritional Status, Schizophrenia virology, COVID-19 complications, Deglutition Disorders etiology, Feeding and Eating Disorders etiology, Schizophrenia complications, Weight Loss
Abstract

Background: In older people with psychoneurological diseases, COVID-19 infection may be associated with a risk of developing or exacerbating dysphagia. The aim of the present study was to examine the relationship between eating/swallowing function and COVID-19 infection., Methods: Subjects were 44 inpatients with confirmed COVID-19 infection being treated for schizophrenia in a psychiatric ward. Eating function was assessed using the Food Intake Level Scale (FILS) before and after infection. We also evaluated age, comorbidities, COVID-19 hospital stay, obesity index, weight loss rate, and chlorpromazine equivalent., Results: Subjects had a mean age of 68.86 years. Pre-infection, 20 subjects had a FILS score of 7-9 (presence of eating/swallowing disorder) and 24 subjects had a score of 10 (normal). Eating function after infection resolution showed decreasing FILS score compared to that before infection in 14 subjects (74.14 years). Six subjects (79.3 years) transitioned from oral feeding to parenteral feeding. A ≥ 10% weight loss during infection treatment was significantly associated with decreased eating function and a transition to parenteral feeding. Chlorpromazine equivalents, comorbidities, and number of days of hospitalization showed no associations with decreased eating function., Conclusions: Preventing malnutrition during treatment for COVID-19 infection is important for improving post-infection life prognosis and maintaining quality of life (QOL).

Published
2021
Full Text
View/download PDF

32. Melt-Spun Fibers from Bio-Based Polyester-Fiber Structure Development in High-Speed Melt Spinning of Poly(ethylene 2,5-furandicarboxylate) (PEF).

Author

Takarada W, Sugimoto K, Nakajima H, Visser HA, Gruter GM, and Kikutani T

Abstract

Poly(ethylene 2,5-furandicarboxylate) (PEF) is regarded as a bio-based alternative or complementary polyester for the widely used fossil resource-based polyester, poly(ethylene terephthalate) (PET). High-speed melt spinning of PEF of low and high molecular weight (L-PEF, H-PEF) was conducted, and the structure and properties of the resultant as-spun fibers were investigated. The occurrence of orientation-induced crystallization was confirmed for the H-PEF at the take-up velocity of 6.0 km/min, the highest speed for producing PET fibers in the industry. Molecular orientation and crystallinity of the as-spun fibers increased with the increase of take-up velocity, where the H-PEF fibers always showed a higher degree of structural development than the L-PEF fibers. The tensile modulus of the high-speed spun H-PEF fibers was relatively low at 5 GPa, whereas a sufficiently high tensile strength of approximately 500 MPa was measured. These values are adequately high for the application in the general semi-engineering fiber field.

Published
2021
Full Text
View/download PDF

33. Structure and Properties of Poly(ethylene terephthalate) Fiber Webs Prepared via Laser-Electrospinning and Subsequent Annealing Processes.

Author

Tokuda T, Tsuruda R, Hara T, Kobayashi H, Tanaka K, Takarada W, Kikutani T, Hinestroza JP, Razal JM, and Takasaki M

Abstract

Melt-electrospinning is an eco-friendly method for producing ultra-fine fibers without using any solvent. We prepared webs of poly(ethylene terephthalate) (PET) through melt-electrospinning using CO 2 laser irradiation for heating. The PET webs comprised ultra-fine fibers of uniform diameter (average fiber diameter = 1.66 μm, coefficient of variation = 19%). The co-existence of fibers with high and low molecular orientation was confirmed through birefringence measurements. Although the level of high orientation corresponded to that of commercial highly oriented yarn, crystalline diffraction was not observed in the wide-angle X-ray diffraction (WAXD) analysis of the webs. The crystallinity of the webs was estimated using differential scanning calorimetry (DSC). The fibers with higher birefringence did not exhibit any cold crystallization peak. After annealing the web at 116 °C for 5 min, a further increase in the birefringence of the fibers with higher orientation was observed. The WAXD results revealed that the annealed webs showed crystalline diffraction peaks with the orientation of the c-axis along the fiber axis. In summary, the formation of fibers with a unique non-crystalline structure with extremely high orientation was confirmed.

Published
2020
Full Text
View/download PDF

34. Eye closed learning time by Japanese during an English examination.

Author

Fujita H, Sano K, Takeuchi K, Kikutani T, Azuma M, and Tanaka T

Abstract

Purpose: To examine the difference of eye closed learning (iCLOL) time (time during which vision is not required), and the interblink interval (IBI), depending on the learning content, in order to consider the possibility of applying iCLOL to learning., Methods: To examine iCLOL time during the listening, writing, and reading sections of an English examination, 19 Japanese subjects were asked to close their eyes whenever it did not interfere with their responses to the examination. Their eyes were video recorded with a video camera, and iCLOL time and the IBI were compared., Results: The percentage of iCLOL time during the listening, writing, and reading sections of the examination was 50.7 ± 10.9%, 8.0 ± 6.5%, and 0.9 ± 1.0%, respectively with significant differences among the three. The iCLOL frequency during the listening, writing, and reading sections was 1.64 ± 0.54 times/min, 0.67 ± 0.50 times/min, and 0.26 ± 0.29 times/min, respectively, with significant differences among the three. The IBI during the listening, writing, and reading sections was 3.7 ± 1.7 s, 3.7 ± 1.6 s, and 5.0 ± 2.1 s, respectively; it was significantly shorter for listening and writing than for reading., Conclusion: iCLOL time was observed during the English examination, the percentage and frequency of which differed depending on the examination content. At times during the examination when the iCLOL time percentage and frequency were greater, the IBI was shorter. These results suggest that iCLOL may be applied as a method during learning., (© 2020 The Authors. Published by Elsevier Ltd.)

Published
2020
Full Text
View/download PDF

35. Melt-Spun Fibers for Textile Applications.

Author

Hufenus R, Yan Y, Dauner M, and Kikutani T

Abstract

Textiles have a very long history, but they are far from becoming outdated. They gain new importance in technical applications, and man-made fibers are at the center of this ongoing innovation. The development of high-tech textiles relies on enhancements of fiber raw materials and processing techniques. Today, melt spinning of polymers is the most commonly used method for manufacturing commercial fibers, due to the simplicity of the production line, high spinning velocities, low production cost and environmental friendliness. Topics covered in this review are established and novel polymers, additives and processes used in melt spinning. In addition, fundamental questions regarding fiber morphologies, structure-property relationships, as well as flow and draw instabilities are addressed. Multicomponent melt-spinning, where several functionalities can be combined in one fiber, is also discussed. Finally, textile applications and melt-spun fiber specialties are presented, which emphasize how ongoing research efforts keep the high value of fibers and textiles alive.

Published
2020
Full Text
View/download PDF

36. Association between Mixing Ability of Masticatory Functions Measured Using Color-Changing Chewing Gum and Frailty among Japanese Older Adults: The Kyoto-Kameoka Study.

Author

Watanabe D, Yoshida T, Yokoyama K, Yoshinaka Y, Watanabe Y, Kikutani T, Yoshida M, Yamada Y, Kimura M, and Kyoto-Kameoka Study Group

Subjects
Aged, Checklist, Female, Humans, Japan, Male, Odds Ratio, Chewing Gum, Frailty diagnosis, Mastication
Abstract

The relationship between mixing ability of masticatory functions and frailty has not been well evaluated. This study investigated the prevalence of physical and comprehensive frailty and its association with mixing ability in 1106 older adults aged ≥65 years who underwent physical examination as part of the Japanese Kyoto-Kameoka Study. Mixing ability was assessed using color-changing chewing gum (1-5 points, 5 representing the best mixing ability). Participants were divided into four groups (5 points, 4 points, 3 points, and 1 or 2 points). The modified Japanese versions of the Cardiovascular Health Study (mJ-CHS) criteria and the validated Kihon Checklist (KCL) were used to assess physical and comprehensive frailty, respectively. Multivariate logistic regression was used to evaluate the association between frailty and mixing ability. The prevalence of physical and comprehensive frailty was 11.8% and 27.9%, respectively. After adjusting for confounders, the odds ratios of physical and comprehensive frailty comparing the highest to the lowest chewing gum score groups were 3.64 (95% confidence interval (CI): 1.62 to 8.18; p for trend = 0.001) and 2.09 (95% CI: 1.09 to 4.03; p for trend = 0.009), respectively. Mixing-ability tests involving chewing gum may be an indicator associated with both physical and comprehensive frailty.

Published
2020
Full Text
View/download PDF

37. Consumption of green tea but not coffee is associated with the oral health-related quality of life among an older Japanese population: Kyoto-Kameoka cross-sectional study.

Author

Nanri H, Yamada Y, Itoi A, Yamagata E, Watanabe Y, Yoshida T, Miyake M, Date H, Ishikawa-Takata K, Yoshida M, Kikutani T, and Kimura M

Subjects
Aged, Aged, 80 and over, Body Mass Index, Cross-Sectional Studies, Energy Intake, Female, Humans, Japan, Male, Odds Ratio, Surveys and Questionnaires, Coffee, Eating psychology, Oral Health, Quality of Life psychology, Tea
Abstract

Background/objectives: The consumption of both green tea and coffee is known to induce positive health effects; however, it remains unclear whether there is an association between the consumption of these beverages and oral health-related quality of life (OHRQoL). Thus, the present study investigated the relationship between the consumption of green tea and coffee and OHRQoL., Subjects/methods: We analyzed cross-sectional baseline data in 2012. The subjects were 7514 Japanese participants (3563 men, 3951 women; ≥65 years of age). Each subject completed a validated self-administered questionnaire that included items on the frequency of the consumption of green tea and coffee. OHRQoL was evaluated using the self-reported General Oral Health Assessment Index (GOHAI), which assesses oral health problems in older adults. A GOHAI score <50 points was defined as a poor OHRQoL., Results: Following adjustment for age, body mass index, total energy intake, alcohol, smoking, medication use, coffee, and fruit and vegetable consumption, increased consumption of green tea showed a strong positive association with the GOHAI score in both men and women (P trend  < 0.001 in both). In contrast, after adjusting for all factors, no statistically significant association was observed between coffee consumption and the GOHAI score in men (P trend  = 0.538) or women (P trend  = 0.607). The respective multivariate-odds ratios (95% confidence intervals) for a poor OHRQoL associated with green tea consumption frequencies of none, <1 cup/day, 1-2 cups/day, and ≥3 cups/day were 1.00, 1.01 (0.80-1.27), 0.95 (0.74-1.21), and 0.78 (0.61-0.99) (P trend  = 0.024) in men, and 1.00, 1.19 (0.90-1.57), 0.98 (0.74-1.29), and 0.86 (0.67-1.12) (P trend  = 0.014) in women., Conclusions: Regardless of sex, green tea consumption was positively associated with the GOHAI score. Therefore, ≥3 cups/day of green tea may reduce the risk of a poor OHRQoL, especially in men.

Published
2019
Full Text
View/download PDF

38. Survey of suspected dysphagia prevalence in home-dwelling older people using the 10-Item Eating Assessment Tool (EAT-10).

Author

Igarashi K, Kikutani T, and Tamura F

Subjects
Age Factors, Aged, Aged, 80 and over, Female, Humans, Japan epidemiology, Male, Middle Aged, Prevalence, Aging, Deglutition Disorders epidemiology, Deglutition Disorders physiopathology, Surveys and Questionnaires
Abstract

Objective: This study was carried out to determine the prevalence of suspected dysphagia and its features in both independent and dependent older people living at home., Materials and Methods: The 10-Item Eating Assessment Tool (EAT-10) questionnaire was sent to 1,000 independent older people and 2,000 dependent older people living at home in a municipal district of Tokyo, Japan. The participants were selected by stratified randomization according to age and care level. We set the cut-off value of EAT-10 at a score of ≥3. The percentage of participants with an EAT-10 score ≥3 was defined as the prevalence of suspected dysphagia. The chi-square test was used for analyzing prevalence in each group. Analysis of the distribution of EAT-10 scores, and comparisons among items, age groups, and care levels to identify symptom features were performed using the Kruskal-Wallis test and Mann-Whitney U test., Results: Valid responses were received from 510 independent older people aged 65 years or older (mean age 75.0 ± 7.2) and 886 dependent older people (mean age 82.3 ± 6.7). The prevalences of suspected dysphagia were 25.1% and 53.8%, respectively, and showed significant increases with advancing age and care level. In both groups, many older people assigned high scores to the item about coughing, whereas individuals requiring high-level care assigned higher scores to the items about not only coughing but also swallowing of solids and quality of life., Conclusion: In independent people, approximately one in four individuals showed suspected dysphagia and coughing was the most perceivable symptom. In dependent people, approximately one in two individuals showed suspected dysphagia and their specifically perceivable symptoms were coughing, difficulties in swallowing solids and psychological burden., Competing Interests: The authors have declared that no competing interests exist.

Published
2019
Full Text
View/download PDF

39. Localization of CGRP and VEGF mRNAs in the mouse superior cervical ganglion during pre- and postnatal development.

Author

Mitsuoka K, Miwa Y, Kikutani T, and Sato I

Subjects
Animals, Cell Count, Mice, RNA, Messenger metabolism, Staining and Labeling, Superior Cervical Ganglion embryology, Superior Cervical Ganglion growth & development, Vascular Endothelial Growth Factors genetics, Superior Cervical Ganglion metabolism, Vascular Endothelial Growth Factors metabolism
Abstract

The neuropeptide calcitonin gene-related peptide (CGRP) mediates inflammation and head pain by influencing the functional vascular blood supply. CGRP is a well-characterized mediator of receptor-regulated neurotransmitter release. However, knowledge regarding the role of CGRP during the development of the superior cervical ganglion (SCG) is limited. In the present study, we observed the localization of CGRP and vascular endothelial growth factor (VEGF-A) mRNAs during prenatal development at embryonic day 14.5 (E14.5), E17.5 and postnatal day 1 (P1) using in situ hybridization. The antisense probe for CGRP was detected by in situ hybridization at E14.5, E17.5, and P1, and the highest levels were detected at E17.5. In contrast, the antisense probe for VEGF-A was detected by in situ hybridization in gradually increasing intensity from E14.5 to P1. The differences in the expression of these two markers revealed specific characteristics related to CGRP concentration and release compared to those of VEGF-A during development. The correlation between CGRP and VEGF-A may influence functional stress and the vascular blood supply during prenatal and postnatal development.

Published
2018
Full Text
View/download PDF

40. Frequency of Fruit and Vegetable Consumption and the Oral Health-Related Quality of Life among Japanese Elderly: A Cross-Sectional Study from the Kyoto-Kameoka Study.

Author

Nanri H, Yamada Y, Itoi A, Yamagata E, Watanabe Y, Yoshida T, Miyake M, Date H, Ishikawa-Takata K, Yoshida M, Kikutani T, and Kimura M

Subjects
Aged, Aged, 80 and over, Body Mass Index, Cross-Sectional Studies, Female, Humans, Japan, Male, Social Class, Surveys and Questionnaires, Asian People, Diet, Fruit, Oral Health, Quality of Life, Vegetables
Abstract

Objective: Many previous studies have reported that fruit and vegetable consumption is associated with a reduced risk of various disease, but whether or not their consumption is associated with the oral health-related quality of life (OHRQoL) is unclear. The objective of this study was to examine the association between the frequency of fruit and vegetable consumption and the OHRQoL in elderly subjects by sex., Methods: We analyzed cross-sectional data from a population-based Kyoto-Kameoka Study in 2012 of 3112 men and 3439 women (age ≥ 65 years). The frequencies of fruit and vegetable consumption were assessed using a validated food frequency questionnaire. We evaluated the OHRQoL using the General Oral Health Assessment Index (GOHAI), a self-reported measure designed to assess the oral health problems in old adults., Results: After adjusting for age, body mass index, alcohol, smoking, education, socioeconomic status, history of disease, medication use, mobility disability, and total energy intake, a higher frequency of combined fruit and vegetable consumption showed a significant positive association with the GOHAI score in both men and women ( p -trend < 0.001 in both sexes). These associations remained significant after adjustment for poor mastication and denture use ( p -trend all < 0.05 in both sexes). We observed a significant positive association even when the frequencies of fruit or vegetable consumption were analyzed separately (all p -trend < 0.05 in both sexes)., Conclusions: A higher frequency of fruit and/or vegetable consumption independently showed a strong positive association with the OHRQoL in both men and women. Further prospective studies are needed to confirm these findings., Competing Interests: The authors declare no conflict of interest.

Published
2017
Full Text
View/download PDF

41. Morphological relationship between the superior cervical ganglion and cervical nerves in Japanese cadaver donors.

Author

Mitsuoka K, Kikutani T, and Sato I

Subjects
Aged, Aged, 80 and over, Cadaver, Female, Humans, Japan, Male, Middle Aged, Carotid Arteries innervation, Glossopharyngeal Nerve pathology, Superior Cervical Ganglion pathology, Vagus Nerve pathology
Abstract

Introduction: There are various communications between the superior cervical ganglion (SCG) and the vagus and glossopharyngeal nerves. However, little information exists concerning the origin of these sympathetic ganglion branches at the superior, middle, and inferior regions of the human SCG. The aim of this study was to describe the human SCG in a morphometric manner with the communication with cranial and cervical nerves and supply., Methods: This study characterized 72 SCG samples from 54 elderly Japanese human cadavers (30 males, 24 females; 65-100 years old). The SCG size (length, width, and thickness) and location were measured from the jugular foramen. We also defined the communication branches of the SCG to the vagus, glossopharyngeal, cervical, and accessory nerves at three regions (superior, middle, and inferior regions) of the SCG. Finally, we examined the arrangement and origin of the branch communications in detail and confirmed our observations, using histological sections of the SCG., Results: The SCG in all cadaver donors was detected at the C2 and C3 vertebra levels. The number of SCG branches supplied the communicating branches, such as the carotid branch, communicating branch of the vagus nerve, and glossopharyngeal nerve, were frequently detected in the superior region of the SCG (χ 2  = 587.72, df = 26, p  <   .001). The number of ganglion cells with a large number of neurons per unit area (1 mm 2 ) was most often found in the middle region with shrunken neurons of the SCG compared with other regions., Conclusion: The communication branches of the SCG are mainly connected to the vagus and glossopharyngeal nerves. Characterizing these branches can provide useful data for head and neck ganglion block and surgical treatments.

Published
2016
Full Text
View/download PDF

42. Application of simple swallowing provocation test with fiberoptic endoscopic evaluation of swallowing in a cross-sectional study.

Author

Tejima C, Kikutani T, Takahashi N, Tamura F, and Yoshida M

Subjects
Aged, 80 and over, Cross-Sectional Studies, Deglutition Disorders physiopathology, Female, Humans, Male, Severity of Illness Index, Deglutition physiology, Deglutition Disorders diagnosis, Endoscopy, Gastrointestinal methods, Fiber Optic Technology
Abstract

Background: This study aimed to develop a simultaneously swallowing provocation test for dysphagia patients undergoing fiberoptic endoscopic evaluation of swallowing (FEES), as well as to evaluate its efficacy., Methods: In this test, 0·4 and 2·0 mL volumes of water were dripped into the pharynx under endoscopic examination of swallowing, and determine the latency time (LT) of the swallowing reflex elicited by water. The subjects were 51 bed-bound patients with dysphagia and could be divided into two groups as 35 tube feeding and 16 oral intake subjects. Among the tube feeding subjects, 20 patients who started dysphagia rehabilitation were followed-up to 3 months., Results: The mean LT was 7·43 ± 7·19 seconds with 0·4 mL of test water and 5·05 ± 5·59 sec with 2·0 mL. When 0·4 mL water was dripped, LT was significantly longer in tube feeding (10·49 ± 7·97 seconds) than oral intake subgroup (5·72 ± 5·16 seconds) (p < 0·05). After the dietary intervention according to the result of FEES, 5 patients were improved in eating, and 15 patients were unchanged or even got worse among 3-months follow-up investigation. LT with 0.4 ml of test water of the Improved group was 3·16 ± 2·69 seconds and that of unchanged/worsened group was 22·6 ± 17·5 seconds, resulting in the significant difference (p < 0·05)., Conclusions: The results of this study suggest that our endoscopic swallowing test as swallowing provocation test with FEES is a useful examination for dysphagia rehabilitation.

Published
2015
Full Text
View/download PDF

43. One-leg standing time with eyes open: comparison between the mouth-opened and mouth-closed conditions.

Author

Yoshida M, Kanehisa Y, Ozaki Y, Iwasa Y, Fukuizumi T, and Kikutani T

Subjects
Aged, Aged, 80 and over, Female, Hand Strength physiology, Humans, Leg, Male, Mouth, Postural Balance physiology, Proprioception physiology
Abstract

Objective: Many studies report a significant relationship between the one-leg standing time with the eyes open and the occlusal relationship. To determine the association between proprioception (the periodontal membrane vs muscle spindle) to the one-leg standing time, the authors compared the one-leg standing time with eyes open between mouth-opened and mouth-closed conditions., Methods: The study participants were 107 healthy, elderly patients. The authors measured the one-leg standing time with eyes open between mouth-opened and mouth-closed conditions., Results: The one-leg standing time was significantly shorter with the mouth opened (21·1±19·1 seconds) than with the mouth closed (25·1±21·4 seconds). Patients whose one-leg standing time was equal or shorter with the mouth opened than with the mouth closed were not different from the other patients with regard to age, handgrip strength, BMI, and the number of remaining teeth., Discussion: The vertical mandibular position may affect body balance.

Published
2015
Full Text
View/download PDF

44. Negative pressure pulmonary edema after reversing rocuronium-induced neuromuscular blockade by sugammadex.

Author

Suzuki M, Inagi T, Kikutani T, Mishima T, and Bito H

Abstract

Negative pressure pulmonary edema (NPPE) is a rare complication that accompanies general anesthesia, especially after extubation. We experienced a case of negative pressure pulmonary edema after tracheal extubation following reversal of rocuronium-induced neuromuscular blockade by sugammadex. In this case, the contribution of residual muscular block on the upper airway muscle as well as large inspiratory forces created by the respiratory muscle which has a low response to muscle relaxants, is suspected as the cause.

Published
2014
Full Text
View/download PDF

45. Low-dose intravenous ketamine potentiates epidural analgesia after thoracotomy.

Author

Suzuki M, Haraguti S, Sugimoto K, Kikutani T, Shimada Y, and Sakamoto A

Subjects
Aged, Aged, 80 and over, Analgesics administration & dosage, Double-Blind Method, Drug Synergism, Female, Humans, Male, Middle Aged, Pain Measurement drug effects, Pain Measurement methods, Pain, Postoperative epidemiology, Pain, Postoperative pathology, Analgesia, Epidural methods, Ketamine administration & dosage, Pain, Postoperative drug therapy, Thoracotomy adverse effects
Abstract

Background: Ketamine potentiates intravenous or epidural morphine analgesia. The authors hypothesized that very-low-dose ketamine infusion reduces acute and long-term postthoracotomy pain., Methods: Forty-nine patients scheduled to undergo open thoracotomy were randomly assigned to receive one of two anesthesia regimens: continuous epidural infusion of ropivacaine and morphine, along with intravenous infusion of ketamine (0.05 mg . kg(-1) . h(-1) [approximately 3 mg/h], ketamine group, n = 24) or placebo (saline, control group, n = 25). Epidural analgesia was continued for 2 days after surgery, and infusion of ketamine or placebo was continued for 3 days. Pain was assessed at 6, 12, 24, and 48 h after surgery. Patients were asked about their pain, abnormal sensation on the wound, and inconvenience in daily life at 7 days and 1, 3, and 6 months after surgery., Results: The visual analog scale scores for pain at rest and on coughing 24 and 48 h after thoracotomy were lower in the ketamine group than in the control group (pain at rest, 9 +/- 11 vs. 25 +/- 20 and 9 +/- 11 vs. 18 +/- 13; pain on coughing, 26 +/- 16 vs. 50 +/- 17 and 30 +/- 18 vs. 43 +/- 18, mean +/- SD; P = 0.002 and P = 0.01, P < 0.0001 and P = 0.02, respectively). The numerical rating scale scores for baseline pain 1 and 3 months after thoracotomy were significantly lower in the ketamine group (0.5 [0-4] vs. 2 [0-5] and 0 [0-5] vs. 1.5 [0-6], median [range], respectively; P = 0.02). Three months after surgery, a higher number of control patients were taking pain medication (2 vs. 9; P = 0.03)., Conclusions: Very-low-dose ketamine (0.05 mg . kg(-1) . h(-1)) potentiated morphine-ropivacaine analgesia and reduced postthoracotomy pain.

Published
2006
Full Text
View/download PDF

46. Determining the plasma concentration of ketamine that enhances epidural bupivacaine-and-morphine-induced analgesia.

Author

Suzuki M, Kinoshita T, Kikutani T, Yokoyama K, Inagi T, Sugimoto K, Haraguchi S, Hisayoshi T, and Shimada Y

Subjects
Adult, Aged, Anesthetics, Dissociative administration & dosage, Anesthetics, Dissociative adverse effects, Cough complications, Dose-Response Relationship, Drug, Double-Blind Method, Drug Synergism, Female, Humans, Ketamine administration & dosage, Ketamine adverse effects, Male, Middle Aged, Pain drug therapy, Pain etiology, Pain Measurement, Thoracic Surgery, Video-Assisted, Analgesics, Opioid, Anesthesia, Epidural, Anesthetics, Dissociative blood, Anesthetics, Local, Bupivacaine, Ketamine blood, Morphine
Abstract

N-methyl-D-aspartate (NMDA) receptor antagonists enhance opioid-induced analgesia. The plasma concentration of ketamine, an NMDA receptor antagonist that enhances epidural morphine-and-bupivacaine-induced analgesia, is not known. We examined 24 patients with lung carcinoma or metastatic lung tumor who underwent video-assisted thoracic surgery in a placebo-controlled, double-blind manner 4 h after emergence from anesthesia. The morphine + ketamine group (n = 8) and morphine + placebo group (n = 8) received 5 mL volume of 2.5 mg morphine and 0.25% bupivacaine and the placebo + ketamine group (n = 8) received 5 mL volume of saline and 0.25% bupivacaine epidurally at the end of skin closure. Four hours after this anesthesia, in the morphine + ketamine and placebo + ketamine groups, ketamine was administered to successively maintain a stable plasma ketamine concentration of 0, 10, 20, 30, 40, and 50 ng/mL by a target-controlled infusion device, and patients assessed the levels of pain at rest, pain on coughing, somnolence (drowsiness), and nausea using a 100-mm visual analog scale (VAS). In the morphine + placebo group, a placebo (saline) was similarly administered instead of ketamine. In the morphine + ketamine group, the VAS scores for pain at rest and pain on coughing significantly decreased on ketamine administration at a plasma concentration of 20 ng/mL or larger compared with the respective baseline VAS scores (P < 0.05 each). In the placebo + ketamine group, the VAS scores for pain at rest and pain on coughing did not significantly change at any plasma concentration of ketamine as compared to the morphine + placebo group. In the morphine + ketamine group, a plasma concentration of ketamine larger than 20 ng/mL did not further reduce VAS scores for pain at rest and pain on coughing. The VAS scores for drowsiness were comparable among the three groups at any plasma concentration of ketamine. Ketamine at a plasma concentration of 20 ng/mL or larger may enhance epidural morphine-and-bupivacaine-induced analgesia. As an adjunct with epidural morphine-and-bupivacaine and considering the safety of small doses, the minimal plasma concentration of ketamine given IV may be approximately 20 ng/mL.

Published
2005
Full Text
View/download PDF

47. Effects of intravenous infusion rate of oxytocin on thoracic epidural pressure in parturients undregoing elective cesarean section.

Author

Kikutani T, Oshima M, Sugimoto K, and Shimada Y

Subjects
Adult, Blood Pressure drug effects, Elective Surgical Procedures, Female, Heart Rate drug effects, Humans, Infusions, Intravenous, Pregnancy, Pressure, Cesarean Section, Epidural Space drug effects, Epidural Space physiology, Oxytocin administration & dosage
Abstract

The effects of intravenous oxytocin on thoracic epidural pressure during cesarean section were studied in 90 parturients (American Society of Anesthesiologists physical atatus class I or II) after obtaining informed consent. The subjects were randomized to either a control (control group; n=30), bolus (bolus group; n=30) or drip treatment group (drip group; n=30). The subjects were anesthetized with 11 approximately 12 mg of intrathecal isobaric bupivacaine (0.5%). An epidural catheter placed at Th 11/12 was connected to a pressure transducer to continuously monitor thoracic epidural pressure. Ten units of oxytocin were administered over 30 seconds in the bolus group and over 5 minutes in the drip group after fetus delivery. We analyzed epidural pressure, mean blood pressure, and heart rate, until 5 minutes after fetus delivery. Epidural pressures in both bolus and drip groups increased after fetus delivery compared with control group (P<0.0001). Epidural pressure immediately after placental delivery in the bolus group was higher than in the control group (p<0.0001) and epidural pressure at 5 minutes after fetus delivery in the drip group was higher than in the control group (p=0.0452). There were no significant differences in changes in blood pressure and heart rate among the three groups. We concluded that the increase in epidural pressure with intravenous administration of oxytocin 10 units over 5 minutes was lower than with intravenous administration of oxytocin 10 units over 30 seconds after fetus delivery.

Published
2003
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results