1,721,018 research outputs found
Dimensional and conformational properties of pullulan tris(alkylcarbamate)s in tetrahydrofuran
Get PDFMatsumoto Yuki, Kitamura Shinichi, Takahashi Rintaro, et al. Dimensional and conformational properties of pullulan tris(alkylcarbamate)s in tetrahydrofuran. Polymer 327, 128417 (2025); 10.1016/j.polymer.2025.128417
Comb-Branched Poly(N-isopropylacrylamide) with a Polysaccharide (Amylose) Backbone: Architecture-Controlled Formation of Thermoresponsive Nanoparticles in Aqueous Solutions
No full textNagao Tatsuki, Arakawa Tomoki, Kitamura Shinichi, et al. Comb-Branched Poly(N-isopropylacrylamide) with a Polysaccharide (Amylose) Backbone: Architecture-Controlled Formation of Thermoresponsive Nanoparticles in Aqueous Solutions. Langmuir 41, 33094 (2025); https://doi.org/10.1021/acs.langmuir.5c05559
Dual thermoresponsive polysaccharide derivative – water system. Partially substituted amylose butylcarbamate in water
Get PDFNakata Yuma, Kitamura Shinichi, Terao Ken. Dual thermoresponsive polysaccharide derivative – water system. Partially substituted amylose butylcarbamate in water. Carbohydrate Polymers 325, 121587 (2024); https://doi.org/10.1016/j.carbpol.2023.121587.Partially substituted amylose n-butylcarbamate (ABC) samples were synthesized with weight-average molar mass Mw ranging between 40 kg mol−1 and 220 kg mol−1 with different degree of substitution DS. When DS was between 0.17 and 0.33, the ABC samples were soluble in water. Furthermore, both LCST and UCST type phase separations were observed for the ABC samples in water when DS is >0.26. The closed-loop phase diagrams for the dual thermoresponsive ABC samples in water were constructed by turbidity measurement. The UCST ranged from 70 °C to 77 °C and the LCST ranged from 13 °C to 17 °C. SAXS measurements were performed for dilute aqueous ABC solutions to determine the chain conformation of ABC at various temperatures. The resulting form factor at the polymer mass concentration of 3 mg mL−1 indicated that the chain conformation is almost independent of temperature, except for the chain diameter, which is influenced by the temperature-dependent hydration behavior. This result suggests that the attractive interactions between ABC chains are not very significant even between UCST and LCST, where higher concentrated polymer solutions show macroscopic phase separation
Dual thermoresponsive polysaccharide derivative – water system. Partially substituted amylose butylcarbamate in water
No full textNakata Yuma, Kitamura Shinichi, Terao Ken. Dual thermoresponsive polysaccharide derivative – water system. Partially substituted amylose butylcarbamate in water. Carbohydrate Polymers 325, 121587 (2024); https://doi.org/10.1016/j.carbpol.2023.121587.Partially substituted amylose n-butylcarbamate (ABC) samples were synthesized with weight-average molar mass Mw ranging between 40 kg mol−1 and 220 kg mol−1 with different degree of substitution DS. When DS was between 0.17 and 0.33, the ABC samples were soluble in water. Furthermore, both LCST and UCST type phase separations were observed for the ABC samples in water when DS is >0.26. The closed-loop phase diagrams for the dual thermoresponsive ABC samples in water were constructed by turbidity measurement. The UCST ranged from 70 °C to 77 °C and the LCST ranged from 13 °C to 17 °C. SAXS measurements were performed for dilute aqueous ABC solutions to determine the chain conformation of ABC at various temperatures. The resulting form factor at the polymer mass concentration of 3 mg mL−1 indicated that the chain conformation is almost independent of temperature, except for the chain diameter, which is influenced by the temperature-dependent hydration behavior. This result suggests that the attractive interactions between ABC chains are not very significant even between UCST and LCST, where higher concentrated polymer solutions show macroscopic phase separation
Correlation between conformational feature in solution and chiral separation ability of linear and nonlinear amylose tris(alkylcarbamate)s
Get PDFKishimoto Aika, Ryoki Akiyuki, Kitamura Shinichi, et al. Correlation between conformational feature in solution and chiral separation ability of linear and nonlinear amylose tris(alkylcarbamate)s. Polymer 284, 126303 (2023).Five immobilized-type chiral columns were prepared from linear, cyclic, and hyperbranched amylose tris(n-octadecylcarbamate) (ATODC) and amylose tris(n-butylcarbamate) (ATBC). A small amount of the linker site, 3-(triethoxysilyl)propylcarbamate, significantly reduced the chain dimensions of ATBC for which high chain stiffness is attained by intramolecular hydrogen bonding between butylcarbamate groups located on the neighboring glycosidic residue. This phenomenon was not found for ATODC, which is mainly stiffened by bulky side groups. While both columns have appreciable chiral recognition ability, number of separated racemates decreased with decreasing side group bulkiness. The bulkiness of the side groups thus plays a definite role in the chiral separation ability. Furthermore, chain linearity on the silica surface is an important factor for the chiral separation because no substantial chiral separation was found for the chiral columns consisting of cyclic ATODC and cyclic ATBC. The chiral column made of hyperbranched ATODC has an intermediate chiral separation ability between linear and cyclic ATODC, supporting this suggestion
Advantages of the rapid double-staining method for intraoperative detection of micrometastasis in sentinel lymph nodes
No full text博士論文本文Full 以下に掲載：Oncology Reports 30(3) pp.1067-1072 2013. Spandidos Publications. 共著者：Toshihiko Ojima, Shinichi Kinami, Keishi Nakamura, Katsunobu Oyama, Masashi Inokuchi, Hideto Fujita, Itasu Ninomiya, Sachio Fushida, Takashi Fujimura, Seiko Kitamura, Shinichi Harada, Tetsuo Oht
Advantages of the rapid double-staining method for intraoperative detection of micrometastasis in sentinel lymph nodes
Get PDF金沢大学博士（医学）博士論文本文Full 以下に掲載：Oncology Reports 30(3) pp.1067-1072 2013. Spandidos Publications. 共著者：Toshihiko Ojima, Shinichi Kinami, Keishi Nakamura, Katsunobu Oyama, Masashi Inokuchi, Hideto Fujita, Itasu Ninomiya, Sachio Fushida, Takashi Fujimura, Seiko Kitamura, Shinichi Harada, Tetsuo Ohtadoctoral thesi
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
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