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307 results on '"Yoshitomi K"'

1. Incidence of potential candidates for kidney-sparing surgery in upper tract urothelial carcinoma : Analysis using radical nephroureterectomy specimens

Author

Matsumoto, S., primary, Waseda, Y., additional, Kimura, T., additional, Suzuki, K., additional, Hasegawa, A., additional, Tanaka, H., additional, Ikeda, R., additional, Yoshitomi, K., additional, Chen, W., additional, Fan, B., additional, Kobayashi, M., additional, Fujiwara, M., additional, Nakamura, Y., additional, Ishikawa, Y., additional, Fukuda, S., additional, Yoshida, S., additional, and Fujii, Y., additional

Published
2024
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2. Real-world outcomes of first-line systematic treatment in advanced upper urinary tract urothelial carcinoma patients with renal impairment: YUSHIMA-04 study

Author

Kimura, T., primary, Fujiwara, M., additional, Matsumoto, S., additional, Yoshitomi, K., additional, Kobayashi, M., additional, Fan, B., additional, Nakamura, Y., additional, Ishikawa, Y., additional, Fukuda, S., additional, Waseda, Y., additional, Tanaka, H., additional, Yoshida, S., additional, Takazawa, R., additional, Sakai, Y., additional, Koga, F., additional, Saito, K., additional, Yano, M., additional, Tsukamoto, T., additional, Okuno, T., additional, Kageyama, Y., additional, Otsuka, Y., additional, Nagahama, K., additional, and Fujii, Y., additional

Published
2024
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4. Tetramodal bladder-preservation therapy incorporating induction chemoradiotherapy and consolidative partial cystectomy with pelvic lymphnode dissection for muscle-invasive bladder cancer: Long-term oncologic outcomes of 201 patients

Author

Tanaka, H., primary, Fujiwara, M., additional, Hasegawa, A., additional, Tanaka, H., additional, Suzuki, K., additional, Kimura, T., additional, Yasujima, R., additional, Ito, T., additional, Ikeda, R., additional, Matsumoto, S., additional, Yoshitomi, K., additional, Kobayashi, M., additional, Nakamura, Y., additional, Fan, B., additional, Chen, W., additional, Ishikawa, Y., additional, Fukuda, S., additional, Waseda, Y., additional, Yoshida, S., additional, Yoshimura, R., additional, Kihara, K., additional, and Fujii, Y., additional

Published
2024
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5. Eigenvalue asymptotics for the Schr\'odinger operator with a $\delta$-interaction on a punctured surface

Author

Exner, P. and Yoshitomi, K.

Subjects
Mathematical Physics, Condensed Matter, Quantum Physics
Abstract

Given $n\geq 2$, we put $r=\min\{i\in\mathbb{N}; i>n/2 \}$. Let $\Sigma$ be acompact, $C^{r}$-smooth surface in $\mathbb{R}^{n}$ which contains the origin. Let further $\{S_{\epsilon}\}_{0\le\epsilon<\eta}$ be a family of measurable subsets of $\Sigma$ such that $\sup_{x\in S_{\epsilon}}|x|= {\mathcal O}(\epsilon)$ as $\epsilon\to 0$. We derive an asymptotic expansion for the discrete spectrum of the Schr{\"o}dinger operator $-\Delta -\beta\delta(\cdot-\Sigma \setminus S_{\epsilon})$ in $L^{2}(\mathbb{R}^{n})$, where $\beta$ is a positive constant, as $\epsilon\to 0$. An analogous result is given also for geometrically induced bound states due to a $\delta$ interaction supported by an infinite planar curve., Comment: LaTeX 2e, 10 pages; an error in the proof corrected

Published
2003
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9. A0907 - Tetramodal bladder-preservation therapy incorporating induction chemoradiotherapy and consolidative partial cystectomy with pelvic lymphnode dissection for muscle-invasive bladder cancer: Long-term oncologic outcomes of 201 patients

Author

Tanaka, H., Fujiwara, M., Hasegawa, A., Suzuki, K., Kimura, T., Yasujima, R., Ito, T., Ikeda, R., Matsumoto, S., Yoshitomi, K., Kobayashi, M., Nakamura, Y., Fan, B., Chen, W., Ishikawa, Y., Fukuda, S., Waseda, Y., Yoshida, S., Yoshimura, R., Kihara, K., and Fujii, Y.

Published
2024
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10. A0101 - Real-world outcomes of first-line systematic treatment in advanced upper urinary tract urothelial carcinoma patients with renal impairment: YUSHIMA-04 study

Author

Kimura, T., Fujiwara, M., Matsumoto, S., Yoshitomi, K., Kobayashi, M., Fan, B., Nakamura, Y., Ishikawa, Y., Fukuda, S., Waseda, Y., Tanaka, H., Yoshida, S., Takazawa, R., Sakai, Y., Koga, F., Saito, K., Yano, M., Tsukamoto, T., Okuno, T., Kageyama, Y., Otsuka, Y., Nagahama, K., and Fujii, Y.

Published
2024
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16. The three-dimensional reconstructed virtual images improve the reliability, accuracy, and efficiency of the R.E.N.A.L. nephrometry score for preoperative assessment

Author

Yoshitomi, K., primary, Komai, Y., additional, Yamamoto, T., additional, Fukagawa, E., additional, Hamada, K., additional, Yoneoka, Y., additional, Fujiwara, M., additional, Fujiwara, R., additional, Oguchi, T., additional, Numao, N., additional, Yuasa, T., additional, Yamamoto, S., additional, Fukui, I., additional, and Yonese, J., additional

Published
2021
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24. A single-chip MPEG2 MP@HL decoder for DTV recording/playback systems

Author

Watanabe, Y., Otobe, Y., Yoshitomi, K., Takahashi, H., and Kohiyana, K.

Subjects
Consumer electronics -- Research, Decoders -- Research, Digital video -- Research, Video recording industry -- Research, Business, Electronics and electrical industries, Engineering and manufacturing industries
Abstract

This paper presents an MPEG2 MP@HL decoder LSI for use in digital TV (DTV) recording/playback systems such as a home server. It integrates the functions required in home servers on a single chip. The chip incorporates not only basic functions for image processing but also effective functions for stream recording/playback. It enables smooth execution of trick plays without complex operations in an external CPU, and makes it easy to build recording/playback systems.

Published
2001

27. AC loss of ripple current in superconducting DC power transmission cable

Author

Kyushu Institute of Technology, Chubu University, Toyohashi University of Technology, Yoshitomi, K., Otabe, E.S., Vyatkin, V.S., Kiuchi, M., Matsushita, T., Hamada, M., Yamaguchi, S., Inada, R., Kyushu Institute of Technology, Chubu University, Toyohashi University of Technology, Yoshitomi, K., Otabe, E.S., Vyatkin, V.S., Kiuchi, M., Matsushita, T., Hamada, M., Yamaguchi, S., and Inada, R.

Abstract

type:Journal Article, As a method of largely reducing the transmission loss in the electric power grid, superconducting direct current (DC) power transmission cable has been investigated. Using superconducting DC power transmission cables, large amounts of current and energy can be transferred compared to conventional copper cables. In this case, an alternating current (AC) is converted to DC and superposed AC which is known as ripple current, and the energy loss by the ripple current is generated. Therefore it is desired to estimate the energy loss density for the case of DC current and superposed AC current for a design of DC transmission cable system. In this study, the hysteresis loss for DC current of 2 kA rectified from 60 Hz alternating current is calculated using the Bean model, and coupling loss was also estimated. The diameter of the cable was 40 mm. The ripple currents generated by multi-pulse rectifiers, 6-pulse, 12-pulse, and 24-pulse were considered. It is found that the total AC loss including the hysteresis loss and the coupling loss is considerably smaller than the supposed heat loss of 0.5 W/m which is obtained with a newly developed cable., 26th International Symposium on Superconductivity (ISS 2013), November 18-20, 2013, Tokyo, Japan, source:https://doi.org/10.1016/j.phpro.2014.09.080

Published
2017

28. Evaluation of trapped magnetic field properties in superconducting MgB2 bulk magnets by finite element method

Author

Department of Computer Science and Electronics, Kyushu Institute of Technology, Mizukami, S., Otabe, E. S., Yoshitomi, K., Vyatkin, Vladimir S., Kiuchi, M., Matsushita, T., Department of Computer Science and Electronics, Kyushu Institute of Technology, Mizukami, S., Otabe, E. S., Yoshitomi, K., Vyatkin, Vladimir S., Kiuchi, M., and Matsushita, T.

Abstract

type:Journal Article, The trapped magnetic field properties in superconducting MgB2 bulk magnets with various kinds of shape such as a disk, a ring and a pair of disks were calculated by the finite element method (FEM). For simplicity, field cool magnetization was replaced by a simple magnetization process at constant temperature to obtain equivalent distribution of magnetic field, and the thermal equation in FEM was omitted. It was confirmed that the result of FEM agreed well with the result by analytical method in infinite long cylinder. We compared the trapped magnetic field property between FEM result and experimental result in reference in order to research the simple evaluation method of the trapped magnetic field of MgB2 bulk magnet. It was found that the result of FEM agreed with the experimental result and it can explain the distribution of trapped magnetic field of superconducting MgB2 bulk magnet. From these results, it was found that it was possible to be calculated in various kinds of shape with using simple evaluation by FEM. Therefore, the optimization of the maximum trapped magnetic field in superconducting MgB2 bulk magnet can be discussed., Proceedings of the 27th International Symposium on Superconductivity (ISS 2014) November 25-27, 2014, Tokyo, Japan, source:https://doi.org/10.1016/j.phpro.2015.05.134

Published
2017

35. SGLT‐1‐specific inhibition ameliorates renal failure and alters the gut microbial community in mice with adenine‐induced renal failure

Author

Hsin‐Jung Ho, Koichi Kikuchi, Daiki Oikawa, Shun Watanabe, Yoshitomi Kanemitsu, Daisuke Saigusa, Ryota Kujirai, Wakako Ikeda‐Ohtsubo, Mariko Ichijo, Yukako Akiyama, Yuichi Aoki, Eikan Mishima, Yoshiaki Ogata, Yoshitsugu Oikawa, Tetsuro Matsuhashi, Takafumi Toyohara, Chitose Suzuki, Takehiro Suzuki, Nariyasu Mano, Yoshiteru Kagawa, Yuji Owada, Takane Katayama, Toru Nakayama, Yoshihisa Tomioka, and Takaaki Abe

Subjects
chronic kidney disease, gut microbiota, phenyl sulfate, sodium glucose cotransporter 1 (SGLT1), uremic toxins, Physiology, QP1-981
Abstract

Abstract Sodium‐dependent glucose cotransporters (SGLTs) have attracted considerable attention as new targets for type 2 diabetes mellitus. In the kidney, SGLT2 is the major glucose uptake transporter in the proximal tubules, and inhibition of SGLT2 in the proximal tubules shows renoprotective effects. On the other hand, SGLT1 plays a role in glucose absorption from the gastrointestinal tract, and the relationship between SGLT1 inhibition in the gut and renal function remains unclear. Here, we examined the effect of SGL5213, a novel and potent intestinal SGLT1 inhibitor, in a renal failure (RF) model. SGL5213 improved renal function and reduced gut‐derived uremic toxins (phenyl sulfate and trimethylamine‐N‐oxide) in an adenine‐induced RF model. Histological analysis revealed that SGL5213 ameliorated renal fibrosis and inflammation. SGL5213 also reduced gut inflammation and fibrosis in the ileum, which is a primary target of SGL5213. Examination of the gut microbiota community revealed that the Firmicutes/Bacteroidetes ratio, which suggests gut dysbiosis, was increased in RF and SGL5213 rebalanced the ratio by increasing Bacteroidetes and reducing Firmicutes. At the genus level, Allobaculum (a major component of Erysipelotrichaceae) was significantly increased in the RF group, and this increase was canceled by SGL5213. We also measured the effect of SGL5213 on bacterial phenol‐producing enzymes that catalyze tyrosine into phenol, following the reduction of phenyl sulfate, which is a novel marker and a therapeutic target for diabetic kidney disease DKD. We found that the enzyme inhibition was less potent, suggesting that the change in the microbial community and the reduction of uremic toxins may be related to the renoprotective effect of SGL5213. Because SGL5213 is a low‐absorbable SGLT1 inhibitor, these data suggest that the gastrointestinal inhibition of SGLT1 is also a target for chronic kidney diseases.

Published
2021
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47. Gut microbiome-derived phenyl sulfate contributes to albuminuria in diabetic kidney disease

Author

Koichi Kikuchi, Daisuke Saigusa, Yoshitomi Kanemitsu, Yotaro Matsumoto, Paxton Thanai, Naoto Suzuki, Koki Mise, Hiroaki Yamaguchi, Tomohiro Nakamura, Kei Asaji, Chikahisa Mukawa, Hiroki Tsukamoto, Toshihiro Sato, Yoshitsugu Oikawa, Tomoyuki Iwasaki, Yuji Oe, Tomoya Tsukimi, Noriko N. Fukuda, Hsin-Jung HO, Fumika Nanto-Hara, Jiro Ogura, Ritsumi Saito, Shizuko Nagao, Yusuke Ohsaki, Satoshi Shimada, Takehiro Suzuki, Takafumi Toyohara, Eikan Mishima, Hisato Shima, Yasutoshi Akiyama, Yukako Akiyama, Mariko Ichijo, Tetsuro Matsuhashi, Akihiro Matsuo, Yoshiaki Ogata, Ching-Chin Yang, Chitose Suzuki, Matthew C. Breeggemann, Jurgen Heymann, Miho Shimizu, Susumu Ogawa, Nobuyuki Takahashi, Takashi Suzuki, Yuji Owada, Shigeo Kure, Nariyasu Mano, Tomoyoshi Soga, Takashi Wada, Jeffrey B. Kopp, Shinji Fukuda, Atsushi Hozawa, Masayuki Yamamoto, Sadayoshi Ito, Jun Wada, Yoshihisa Tomioka, and Takaaki Abe

Subjects
Science
Abstract

Diabetes is a major cause of kidney disease. Here Kikuchi et al. show that phenol sulfate, a gut microbiota-derived metabolite, is increased in diabetic kidney disease and contributes to the pathology by promoting kidney injury, suggesting phenyl sulfate could be used a marker and therapeutic target for the treatment of diabetic kidney disease.

Published
2019
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