Takuya Maekawa, Kazuya Ohara, Yizhe Zhang, Matasaburo Fukutomi, Sakiko Matsumoto, Kentarou Matsumura, Hisashi Shidara, Shuhei J. Yamazaki, Ryusuke Fujisawa, Kaoru Ide, Naohisa Nagaya, Koji Yamazaki, Shinsuke Koike, Takahisa Miyatake, Koutarou D. Kimura, Hiroto Ogawa, Susumu Takahashi, Ken Yoda,
Abstract A comparative analysis of animal behavior (e.g., male vs. female groups) has been widely used to elucidate behavior specific to one group since pre-Darwinian times. However, big data generated by new sensing technologies, e.g., GPS, makes it difficult for them to contrast group differences manually. This study introduces DeepHL, a deep learning-assisted platform for the comparative analysis of animal movement data, i.e., trajectories. This software uses a deep neural network based on an ...
Tópico(s): Wildlife Ecology and Conservation
2020 - Nature Portfolio | Nature Communications
N. Nagai, E. Maekawa, Kazuya Ono,
A new n-way planar hybrid power divider (henceforth HPD) and an n-way coaxial-type HPD are proposed, and the synthesis methods of three-way and four-way planar HPD's are shown. As for the three-way planar HPD, the isolation characteristics among three ports show more than 20 dB, and the VSWR'S of four ports show less than 1.4 in 2:1 bandwidth. The experimental characteristics are in good agreement with the theoretical analysis.
Tópico(s): Electromagnetic Compatibility and Noise Suppression
1977 - IEEE Microwave Theory and Techniques Society | IEEE Transactions on Microwave Theory and Techniques
Hideki Ueno, Yojiro Hashiguchi, Hideyuki Shimazaki, Eiji Shinto, Yoshiki Kajiwara, Kuniaki Nakanishi, Kei Kato, Kazuya Maekawa, Takahiro Nakamura, Junji Yamamoto, Kazuo Hase,
Background The aim of this study was to determine the prognostic value of peritumoral deposits (PTDs) in colorectal cancer (CRC). Methods A total of 695 patients with pT3/T4 CRC (1980 to 1999) were reviewed. Tumor deposits located ≥2 mm from the front of the direct spread in the primary tumor were evaluated as PTDs. Results PTDs were observed in 111 patients (16.0%). The incidence of PTDs increased according to increasing N stage: 7% for N0, 22% for N1, and 39% for N2 (P < .0001). Five-year disease-specific ...
Tópico(s): Colorectal Cancer Treatments and Studies
2013 - Elsevier BV | The American Journal of Surgery
Hideki Ueno, Yojiro Hashiguchi, Hideyuki Shimazaki, Eiji Shinto, Yoshiki Kajiwara, Kuniaki Nakanishi, Kei Kato, Kazuya Maekawa, Kosuke Miyai, Takahiro Nakamura, Junji Yamamoto, Kazuo Hase,
We aimed to determine semiquantitative evaluation criteria for Crohn-like lymphoid reaction (CLR). We reviewed 1,032 patients with colorectal cancer and evaluated CLR by counting all peritumoral lymphoid aggregates (LAs) and by measuring the maximum diameter of the largest LA. The maximum diameter of the largest LA, rather than the number, had a significant impact on survival. Active CLR determined by the 1-mm rule was significantly associated with MLH1/MSH2 immunohistochemical staining deficiency. ...
Tópico(s): Colorectal Cancer Screening and Detection
2013 - Oxford University Press | American Journal of Clinical Pathology
Yuki Kawahara, Kazuya Maekawa, Yoshiho Ikeda,
Since the roll damping of ships has significant effects of viscosity, it is difficult to calculate it theoretically. Therefore experimental results or some prediction methods are used to get the roll damping in design stage of ships. Among some prediction methods, Ikeda's one is widely used in many ship motion computer programs. Using the method, the roll damping of various ship hulls with various bilge keels are calculated to investigate its characteristics. Ship hull forms are systematically changed ...
Tópico(s): Structural Integrity and Reliability Analysis
2011 - Springer Nature (Netherlands) | Fluid mechanics and its applications
Produção Nacional
Marcelo Almeida Santos Neves, Vadim Belenky, Jean Otto de Kat, Kostas J. Spyrou, Naoya Umeda,
... s Method and Its Limitation, by Yuki Kawahara, Kazuya Maekawa and Yoshiho Ikeda.- A Study on the Characteristics ...
Tópico(s): Ship Hydrodynamics and Maneuverability
2011 - Springer Nature (Netherlands) | Fluid mechanics and its applications
Akira Uchiyama, Shunsuke Saruwatari, Takuya Maekawa, Kazuya Ohara, Teruo Higashino,
Context recognition is a topic that has garnered considerable interest in the ubiquitous and pervasive computing research community. A wide variety of Internet-of-things devices with micro-electromechanical system (MEMS) sensors are used to obtain sensor data (e.g., acceleration, vibration, and sound) related to target contexts. However, devices for context recognition also have limitations such as deployment cost, battery maintenance cost, and the requirement for wearing/carrying the devices. To ...
Tópico(s): Energy Efficient Wireless Sensor Networks
2021 - | Journal of Information Processing
Gonzalo A. García, Kazuya Maekawa, Kenzo Akazawa,
Tópico(s): Neural Networks and Applications
2004 - Springer Science+Business Media | Lecture notes in computer science
Sohei Yamamoto, Hitoshi Tsuda, Tsunekazu Kita, Kazunari Maekawa, Kazuyuki Fujii, Kazuya Kudoh, Kenichi Furuya, Seiichi Tamai, Johji Inazawa, Osamu Matsubara,
Tópico(s): Prenatal Screening and Diagnostics
2007 - Springer Science+Business Media | Virchows Archiv
Kimio Yoshimura, Hiroshi Koshikawa, Tetsuya Yamaki, Yasunari Maekawa, Kazuya Yamamoto, Hideyuki Shishitani, Koichiro Asazawa, Susumu Yamaguchi, Hirohisa Tanaka,
Anion exchange membranes (AEMs) having polyvinylimidazolium grafts were synthesized by radiation-induced graft polymerization of N-vinylimidazole (NVIm) or the coplymerizaiton with styrene onto poly(ethylene-co-tetrafluoro-ethylene) (ETFE) film, followed by N-alkylation and ion exchange reactions. The alkaline durability of the membranes was evaluated in 1M KOH at 60 and 80{degree sign}C. The AEM consisting of the homopolymer and copolymer (1:1 molar ratio) grafts (AEM2 and AEM3) with the ion exchange ...
Tópico(s): Conducting polymers and applications
2013 - Institute of Physics | ECS Transactions
Tao Hong, Kazuya Shinmura, Hidetaka Yamada, Masato Maekawa, Satoshi Osawa, Yasuhiro Takayanagi, Kazuya Okamoto, Tomohiro Terai, Hiroki Mori, Toshio Nakamura, Haruhiko Sugimura,
Familial adenomatous polyposis (FAP) is an autosomal dominant hereditary disease characterized by multiple colorectal adenomatous polyps and frequent extracolonic manifestations. An attenuated form of FAP (AFAP) is diagnosed based on a milder colorectal phenotype, and the colorectal phenotype of (A)FAP has been linked to germline APC mutations. The relationships between the spectrum of mutations and extracolonic manifestations are quite well known, but they need to be further defined.Nine germline ...
Tópico(s): Cholangiocarcinoma and Gallbladder Cancer Studies
2010 - BioMed Central | BMC Research Notes
Kazuya Maekawa, Kazufumi Toume, Masami Ishibashi,
Isolation of new fuzanins, carbamate-containing natural products, from Kitasatospora sp. IFM10917
Tópico(s): Synthesis of Organic Compounds
2010 - Springer Nature | The Journal of Antibiotics
Hideo Sawada, Jun-ichi Iidzuka, Tomomi Maekawa, Ryo Takahashi, Tokuzō Kawase, Kazuya Oharu, Hideki Nakagawa, Kunihiro Ohira,
Solubilization of fullerene into water was studied by the use of fluoroalkyl end-capped acryloylmorpholine oligomers, N,N-dimethylacrylamide oligomers, and acrylic acid oligomers. In these fluorinated oligomers, fluoroalkyl end-capped acryloylmorpholine oligomers were more effective in solubilizing fullerene into water. Interestingly, the aqueous solutions of fullerene were applicable to fluorescence analyses.
Tópico(s): Graphene research and applications
2003 - Elsevier BV | Journal of Colloid and Interface Science
Kazuya Ohara, Takuya Maekawa, Yasuyuki Matsushita,
Detecting the events of indoor everyday objects such as door or window open/close events has been actively studied to implement such applications as intrusion detection, adaptive HVAC control, and monitoring an independently living elderly person. This study proposes a method for detecting the events and states of indoor everyday objects such as doors and windows without using distributed sensors attached to the objects. In this study, we achieve practical and unobtrusive event detection using a ...
Tópico(s): Advanced Adaptive Filtering Techniques
2017 - Association for Computing Machinery | Proceedings of the ACM on Interactive Mobile Wearable and Ubiquitous Technologies
Takeshi Kitai, Takayuki Shimogai, W.H. Wilson Tang, K. Iwata, Αndrew Xanthopoulos, Shuto Otsuka, Fumika Nakada, Rina Yokoyama, Kentaro Kamiya, Hiroshi Saito, Kazuya Saito, Emi Maekawa, Masaaki Konishi, Yuki Ogasahara, Kentaro Jujo, Hiroshi Wada, Takatoshi Kasai, Shin‐ichi Momomura, Chayakrit Krittanawong, John Skoularigis, Filippos Triposkiadis, Nobuyuki Kagiyama, Yutaka Furukawa, Yuya Matsue,
Abstract Aims Functional decline due to skeletal muscle abnormalities leads to poor outcomes in patients with acute heart failure (AHF). The 6-minute walking test (6MWT) reliably evaluates functional capacity, but its technical difficulty for the elderly often limits its benefits. Although the Short Physical Performance Battery (SPPB) is a comprehensive measure of physical performance, its role in AHF remains unclear. This study aimed to examine the prognostic significance of SPPB compared to the 6MWT ...
Tópico(s): Cardiovascular Function and Risk Factors
2021 - Oxford University Press | European Heart Journal Open
Shunsuke Kawai, Hiroyuki Yoshitomi, Junko Sunaga, Cantas Alev, Sanae Nagata, Megumi Nishio, Masataka Hada, Yuko Koyama, Maya Uemura, Kazuya Sekiguchi, Hirotsugu Maekawa, Makoto Ikeya, Sakura Tamaki, Yonghui Jin, Yuki Harada, Kenichi Fukiage, Taiji ADACHI, Shuichi Matsuda, Junya Toguchida,
The recapitulation of bone formation via the in vitro generation of bone-like nodules is frequently used to understand bone development. However, current bone-induction techniques are slow and difficult to reproduce. Here, we report the formation of bone-like nodules within ten days, via the use of retinoic acid (RA) to induce the osteogenic differentiation of human induced pluripotent stem cells (hiPSCs) into osteoblast-like and osteocyte-like cells that create human bone tissue when implanted in ...
Tópico(s): Pluripotent Stem Cells Research
2019 - Nature Portfolio | Nature Biomedical Engineering
Ken‐ichi Uchida, S. Takahashi, K. Harii, Jun’ichi Ieda, Wataru Koshibae, Kazuya Ando, Sadamichi Maekawa, Eiji Saitoh,
Tópico(s): Magneto-Optical Properties and Applications
2008 - Nature Portfolio | Nature
Toshihiro Muraji, Chikara Tsugawa, Eiji Nishijima, Shiiki Satoh, Satoshi Takamizawa, Kazuya Ise, Takayo Maekawa,
The efficacy of antireflux surgical procedures involving the Roux-en-Y jejunal limb for cholangitis was evaluated retrospectively in patients with biliary atresia (BA).From July 1993 to December 2001, 41 patients with BA underwent hepatic portojejunostomy with Roux-en-Y reconstruction. Of these patients, 11 had intractable cholangitis that was treated by creation of a value with or without lengthening of the Roux-en-Y limb.Among the 11 patients, the first episode of cholangitis occurred within 6 ...
Tópico(s): Congenital Anomalies and Fetal Surgery
2002 - Elsevier BV | Journal of Pediatric Surgery
Hiroshi Yamamoto, Kazuya Maekawa, Yasuhiro Sakai,
An experiment was carried out to investigate the effects of a Zn-organic-compound as a new reducing agent, and SiO2 and CaO additives, on the magnetic and physical properties of SrFe2-hexagonal ferrite (W type). It was found that the magnetic properties of SrO⋅9.0Fe2O3 were considerably improved by adding 0.1 wt% of Zn-organic-compound, 0.3 wt% of SiO2, and 0.7 wt% of CaO together. The optimum conditions for making magnets and the prime properties of typical specimens are as follows: Based on chemical ...
Tópico(s): Magnetic Properties and Applications
2001 - | Journal of the Japan Society of Powder and Powder Metallurgy
Yuina Wada, Motoko Maekawa, Tetsuo Ohnishi, Shabeesh Balan, Shigeru Matsuoka, Kazuya Iwamoto, Yoshimi Iwayama, Hisako Ohba, Akiko Watanabe, Yasuko Hisano, Yayoi Nozaki, Tomoko Toyota, Tomomi Shimogori, Masanari Itokawa, Tetsuyuki Kobayashi, Takeo Yoshikawa,
BackgroundThe pathophysiology of schizophrenia, a major psychiatric disorder, remains elusive. In this study, the role of peroxisome proliferator-activated receptor (PPAR)/retinoid X receptor (RXR) families, belonging to the ligand-activated nuclear receptor superfamily, in schizophrenia, was analyzed.MethodsThe PPAR/RXR family genes were screened by exploiting molecular inversion probe (MIP)-based targeted next-generation sequencing (NGS) using the samples of 1,200 Japanese patients with schizophrenia. ...
Tópico(s): Immune Cell Function and Interaction
2020 - Elsevier BV | EBioMedicine
Makoto Kubo, Ryuichi Nagashima, Etsuro Ohta, Tatsunori Maekawa, Yumiko Isobe, Mitsue Kurihara, Koji Eshima, Kazuya Iwabuchi, Toshikuni Sasaoka, Sadahiro Azuma, Heather L. Melrose, Matthew J. Farrer, Fumiya Obata,
LRRK2 is the causal molecule of autosomal dominant familial Parkinson's disease. B2 cells express a much higher LRRK2 mRNA level than B1 cells. To reveal the function of LRRK2 in B cells, we analyzed B cell functions in LRRK2-knockout (LRRK2−/−) mice. LRRK2−/− mice had significantly higher counts of peritoneal B1 cells than wild-type mice. After BCR stimulation, phosphor-Erk1/2 of splenic B2 cells was enhanced to a higher degree in LRRK2−/− mice. LRRK2−/− mice had a significantly higher serum IgA ...
Tópico(s): Signaling Pathways in Disease
2016 - Elsevier BV | Journal of Neuroimmunology
Taku Suzuki, Takanori Tsujimura, Jin Magara, Naohito Hao, Naru Shiraishi, Kazuya Maekawa, Kazuo Matsushima, Makoto Inoue,
Tópico(s): Esophageal and GI Pathology
2021 - Springer Science+Business Media | Dysphagia
Hiroshi Yamamoto, Kazuya Maekawa,
An experiment was carried out to investigate the effects of Mg-organic-compound as a new reducing agent, and that of SiO2 and CaO additives, on the magnetic and physical properties of SrFe2-W type hexagonal ferrite. It was found that the magnetic properties of SrO·9.0Fe2O3 were considerably improved by adding 0.2 wt% Mg-organic-compound, 0.3 wt% SiO2, and 0.75 wt% CaO together. The optimum conditions for making magnets and some properties of typical specimens are as follows. Chemical analysis composition: ...
Tópico(s): Microstructure and Mechanical Properties of Steels
2000 - | Journal of the Japan Society of Powder and Powder Metallurgy
Kazuyuki Ono, Hiroshi Inagawa, Kazuya Kiyota, Taizo Terada, So Suzuki, Kazuhiko Maekawa,
Ono, Kazuyuki MD; Inagawa, Hiroshi MD; Kiyota, Kazuya MD; Terada, Taizo MD; Suzuki, So MD; Maekawa, Kazuhiko MD Author Information
Tópico(s): Trauma Management and Diagnosis
1998 - Lippincott Williams & Wilkins | Journal of Trauma and Acute Care Surgery
Tópico(s): Ancient Near East History
1989 - De Gruyter | Altorientalische Forschungen
... Crossref reports the following articles citing this article:Kazuya Maekawa, Yasunori Nihei, Toru Katayama, Ikeda Yoshiho A Practical ...
Tópico(s): Maritime Security and History
1979 - University of Chicago Press | Isis
Shuhei Yamamoto, Saeko Yamasaki, Satoko Higuchi, Kentaro Kamiya, Hiroshi Saito, Kazuya Saito, Yuki Ogasahara, Emi Maekawa, Masaaki Konishi, Takeshi Kitai, K. Iwata, Kentaro Jujo, Hiroshi Wada, Takatoshi Kasai, Hirofumi Nagamatsu, Tetsuya Ozawa, Katsuya Izawa, Naoki Aizawa, Akihiro Makino, Kazuhiro Oka, Shin‐ichi Momomura, Nobuyuki Kagiyama, Yuya Matsue,
Although evidence suggests that cognitive decline and physical frailty in elderly patients with heart failure (HF) are associated with prognosis, the impact of concurrent physical frailty and cognitive impairment, that is, cognitive frailty, on prognosis has yet to be fully investigated. The current study sought to investigate the prevalence and prognostic impact of cognitive frailty in elderly patients with HF.This study is a sub-analysis of FRAGILE-HF, a prospective multicentre observational study ...
Tópico(s): Health Systems, Economic Evaluations, Quality of Life
2022 - Wiley | ESC Heart Failure
Hiroshi Saito, Yuya Matsue, Kentaro Kamiya, Nobuyuki Kagiyama, Daichi Maeda, Yoshiko Endo, Hidenao Ueno, Kenji Yoshioka, Akira Mizukami, Kazuya Saito, Yuki Ogasahara, Emi Maekawa, Masaaki Konishi, Takeshi Kitai, K. Iwata, Kentaro Jujo, Hiroshi Wada, Masaru Hiki, Taishi Dotare, Tsutomu Sunayama, Takatoshi Kasai, Hirofumi Nagamatsu, Tetsuya Ozawa, Katsuya Izawa, Shuhei Yamamoto, Naoki Aizawa, Kazuki Wakaume, Kazuhiro Oka, Shin‐ichi Momomura, Tohru Minamino,
Abstract Background The purpose of this study was to clarify the prevalence, association with frailty and exercise capacity, and prognostic implication of sarcopenic obesity in patients with heart failure. Methods The present study included 779 older adults hospitalized with heart failure (median age: 81 years; 57.4% men). Sarcopenia was diagnosed based on the guidelines by the Asian Working Group for Sarcopenia. Obesity was defined as the percentage of body fat mass (FM) obtained by bioelectrical ...
Tópico(s): Nutritional Studies and Diet
2022 - BioMed Central | BMC Geriatrics
Shinya Tanaka, Kentaro Kamiya, Hiroshi Saito, Kazuya Saito, Yuki Ogasahara, Emi Maekawa, Masaaki Konishi, Takeshi Kitai, K. Iwata, Kentaro Jujo, Hiroshi Wada, Takatoshi Kasai, Nobuaki Hamazaki, Kohei Nozaki, Hirofumi Nagamatsu, Tetsuya Ozawa, Katsuya Izawa, Shuhei Yamamoto, Naoki Aizawa, Kazuki Wakaume, Kazuhiro Oka, Shin‐ichi Momomura, Nobuyuki Kagiyama, Yuya Matsue,
Abstract Aims There have been no investigations of the prevalence and clinical implications of coexistence of anaemia and frailty in older patients hospitalized with heart failure (HF) despite their association with adverse health outcomes. The present study was performed to determine the prevalence and prognostic value of the coexistence of anaemia and frailty in hospitalized older patients with HF. Methods and results We performed post hoc analysis of consecutive hospitalized HF patients ≥65 years ...
Tópico(s): Erythropoietin and Anemia Treatment
2020 - Wiley | ESC Heart Failure
Yuya Matsue, Kentaro Kamiya, Hiroshi Saito, Kazuya Saito, Yuki Ogasahara, Emi Maekawa, Masaaki Konishi, Takeshi Kitai, K. Iwata, Kentaro Jujo, Hiroshi Wada, Takatoshi Kasai, Hirofumi Nagamatsu, Tetsuya Ozawa, Katsuya Izawa, Shuhei Yamamoto, Naoki Aizawa, Ryusuke Yonezawa, Kazuhiro Oka, Shin‐ichi Momomura, Nobuyuki Kagiyama,
Abstract Aims To describe the prevalence, overlap, and prognostic implications of physical and social frailties and cognitive dysfunction in hospitalized elderly patients with heart failure. Methods and results The FRAGILE‐HF study was a prospective multicentre cohort study enrolling consecutive hospitalized patients with heart failure aged ≥65 years. The study objectives were to examine the prevalence, overlap, and prognostic implications of the coexistence of multiple frailty domains. Physical ...
Tópico(s): Hip and Femur Fractures
2020 - Elsevier BV | European Journal of Heart Failure