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Azusa Sasaki,Yasushi Nakamura,Yukiko Kobayashi,Wataru Aoi,Takako Nakamura,Koji Shirota,Noboru Suetome,Michiaki Fukui,Tomoaki Matsuo,Shigehisa Okamoto,Yuri Tashiro,Eun Y. Park,Kenji Sato 한국식품연구원 2018 Journal of Ethnic Foods Vol.5 No.1
Background The fruit of Katsura-uri, traditionally used in the preparation of pickles in Japan, is facing an extinction crisis. In addition to the traditional dishes prepared from Katsura-uri, alternative dishes using the fruit should be devised to increase consumer demands for the protection of the heirloom vegetable. We attempted designing new Katsura-uri contemporary dishes and assessed the application of Katsura-uri juice as a functional drink without raising blood glucose levels. Methods Cooking experiments were conducted with Katsura-uri in its ripening stages, based on the advice from a licensed chef and a registered dietitian in Japan. In the questionnaire-based sensory evaluation, consumer acceptability of Katsura-uri juice was assessed. The blood glucose levels were measured after healthy volunteers consumed the juice. Results We demonstrated six new Katsura-uri dishes. In the questionnaire-based sensory evaluation of Katsura-uri juice, the assessment values for taste and fragrance were high. In human trials, the levels of incremental area under the curve and glucose spike were significantly lower after consumption of Katsura-uri juice, as compared to those after consumption of muskmelon juice. Conclusion Katsura-uri-containing contemporary dishes and juice would help continue the consumption of the vegetable. Based on the results of the questionnaire, we also concluded that the use of Katsura-uri as a functional drink without raising blood glucose levels is superior to its use as contemporary dishes. These findings provide useful strategies to protect Katsura-uri from extinction.
Cho, Yong Hwan(조용환),Nakamura, Tomoaki(나카무라 토모아키),Mizutani, Norimi(미즈타니 노리미),Lee, Kwang-Ho(이광호) 한국해안해양공학회 2013 한국해안해양공학회 논문집 Vol.25 No.6
점착성 표사의 유동 특성을 다루기 위하여 점착력을 고려한 표사유동 수치계산 모델이 제안되었다. 제안된 계산 모델에서는, 각각의 모래 입자는 점토의 얇은 층으로 둘러싸여 있는 상태를 가정했다. 모래 입자에 작용하는 점착력을 적용하기 위해 한계 Shields수와 소류사량을 결정하는 항이 수정되었다. 제안된 표사모델은 3차원 유체 구조 지형변화 연성 수치계산 모델에 적용하여, 인공여울의 지형변화특성을 파악하였다. 수치계산 결과, 각각의 점토 함유율, 단위면적당 작용하는 점착 저항력, 함수비의 증가는 한계 Shields수를 증가 시키고, 반대로 소류사량을 감소시킴으로써 지형변화 경향에는 영향을 미치지 않은 채 여울의 지형변화를 억제하는 것으로 나타났다. 점토를 모래 입자와 혼합함으로써 여울의 지형변화를 감소시킬 수 있는 것을 암시한다. A sediment transport calculation considering cohesive force is proposed to deal with the transport phenomena of cohesive sediment. In the proposed calculation, each sand particle is assumed to be surrounded by a thin layer of mud. The critical Shields parameter and bed-load sediment transport rate are modified to include the cohesive force acting on the sand particle. The proposed calculation is incorporated into a two-way coupled fluid-structure-sediment interaction model, and applied to wave-induced topographic change of artificial shallows. Numerical results show that an increase in the content ratio of the mud, cohesive resistance force per unit surface area and water content cause increases in the critical Shields parameter and decreases in the bed-load sediment transport rate, reducing the topographic change of the shallow without changing its trend. This suggests that mixing mud in the pores of the sand particles can reduce the topographic change of shallows.
Prevalence of Gastric Motility Disorders in Patients with Functional Dyspepsia
( Haruki Asano ),( Toshihiko Tomita ),( Kumiko Nakamura ),( Takahisa Yamasaki ),( Takuya Okugawa ),( Takashi Kondo ),( Tomoaki Kono ),( Katsuyuki Tozawa ),( Yoshio Ohda ),( Tadayuki Oshima ),( Hirokaz 대한소화기기능성질환·운동학회(구 대한소화관운동학회) 2017 Journal of Neurogastroenterology and Motility (JNM Vol.23 No.3
Background/Aims Gastric motility abnormalities have been considered to be pathophysiological features of functional dyspepsia (FD) that are closely related to dyspepsia symptoms, especially postprandial distress syndrome (PDS). The aims of this study are to (1) investigate the prevalence of gastric motility disorders and (2) evaluate the association between gastric motility abnormalities and dyspeptic symptoms using gastric scintigraphy in the PDS type of FD. Methods Forty healthy subjects and 94 PDS type FD patients were enrolled in the study. The volunteers and patients ingested a radiolabeled (technetium-99m) solid test meal, and scintigraphic images were recorded. Gastric accommodation and emptying were assessed by scintigraphic imaging. The patients` dyspeptic symptoms were also explored using self-completed symptom questionnaires with 10 variables (4 scales, 0-3 points) at the same time. Results In 94 Japanese FD patients, the prevalence of impaired gastric accommodation and delayed emptying were 14.9% (14/94) and 10.6% (10/94), respectively. Gastric motility abnormalities were seen in 25.5% (24/94) of FD patients. There was no association between gastric motility abnormalities and dyspeptic symptoms. Conclusions Gastric motility abnormalities were seen in 25.5% of Japanese PDS type FD patients. However, there was no association between gastric motility abnormalities and dyspeptic symptoms on gastric scintigraphy. (J Neurogastroenterol Motil 2017;23:392-399)
Yuya Yoshimitsu,Kiwamu Tanaka,Takashi Tagawa,Yasushi Nakamura,Tomoaki Matsuo,Shigehisa Okamoto 한국식물학회 2009 Journal of Plant Biology Vol.52 No.6
Tungsten particles have long been used as microcarriers in biolistic bombardment because of their cost-effectiveness compared to alternative gold particles— even if the former have several drawbacks, including their DNA-degrading activity. We characterized tungsteninduced DNA degradation to assess the value of this metal particle and to improve tungsten-based biolistic bombardment. Alkaline pH, low temperature, and high salt concentration were found to diminish tungsten-induced DNA breakdown. The pH was the most influential factor in this phenomenon, both in aqueous solutions and on the particles. Furthermore, alkaline pH greater than 9.4 of an adsorption mixture was found to be essential for DNA binding to metal particles. Based on these findings, we propose a new formula of DNA/tungsten adsorption by using TE buffers that keep alkaline pH (>9.4) of the mixture, in which tungsten-bound plasmid DNA cleavage was suppressed to half the level of that in the conventional DNA-binding condition.