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Alkoxysilane Compound Coating on Mortar Surfaces and Evaluation of Its Anti-biofilm Properties
Hideyuki Kanematsu,Dana M. Barry,Akiko Ogawa,Takeshi Kogo,Risa Kawai,Hidekazu Miura,Nobumitsu Hirai,Akihiro Maegawa,Yuki Murakami,Kaori Omata,Katsuhiko Tsunasima,Katsuhiko Sano,Akira Suzuki,Yoshiaki S 한국표면공학회 2023 한국표면공학회 학술발표회 초록집 Vol.2023 No.11-1
Real-Time, in Situ Monitoring of the Oxidation of Graphite: Lessons Learned
Morimoto, Naoki,Suzuki, Hideyuki,Takeuchi, Yasuo,Kawaguchi, Shogo,Kunisu, Masahiro,Bielawski, Christopher W.,Nishina, Yuta American Chemical Society 2017 Chemistry of materials Vol.29 No.5
<P>Graphite oxide (GO) and its constituent layers (i.e., graphene oxide) display a broad range of functional groups and, as such, have attracted significant attention for use in numerous applications. GO is commonly prepared using the 'Hummers method' or a variant thereof in which graphite is treated with KMnO4 and various additives in H2SO4. Despite its omnipresence, the underlying chemistry of such oxidation reactions is not well understood and typically affords results that are irreproducible and, in some cases, unsafe. To overcome these limitations, the oxidation of graphite under Hummers-type conditions was monitored over time using in situ X-ray diffraction and in situ X-ray absorption near edge structure analyses with synchrotron radiation. In conjunction with other atomic absorption spectroscopy, UV vis spectroscopy and elemental analysis measurements, the underlying mechanism of the oxidation reaction was elucidated, and the reaction conditions were optimized. Ultimately, the methodology for reproducibly preparing GO on large scales using only graphite, H2SO4 and KMnO4 was developed and successfully adapted for use in continuous flow systems.</P>
A Sensor Network using Content-Aware Messaging Network Architecture
Junya Terazono,Hideyuki Fukuhara,Takuto Yamada,Toshiaki Nihei,Kazunori Suzuki,Isamu Koseda,Ryutaro Fujita,Toshiaki Miyazaki,Senroh Saito,Atsushi Kara,Takafumi Hayashi 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8
The present paper describes an approach to the construction of a sensor network using a messaging network. A messaging network is an over lay network with a set of content-aware message handling ca-pabilities. The use of a messaging network can reduce the complexity and maintenance burden of integrated sensor information systems. Message mediation(afunction of the messaging network) enables interoperation of various applications and integration of diverse sensor data. Subscription(an other concept in the messaging network) enables proper information delivery of the sensor data to each user. The proposed approach is helpful in implementing an SOA-based sensor network and enables flexible sensor network configuration and utilization.
Yeunhwa Gu,Ikukatsu Suzuki,Motoki Koide,Ikuo Hayash,Hideyuki Takai,Ahn,Kyoo-seok,Hajimu Yamamoyo INSTITUTE OF ORIENTAL MEDICINE KYUNG-HEE UNIVERSIT 1999 JOURNAL OF ORIENTAL MEDICINE Vol.4 No.1
Propolis is a resin-like material produced by honeybees, an mixture with resin and pollen in their saliva. Propolis, in Oriental medicine, has been referred to as 'Nobongbang'(露蜂房)and used for anti-pyretic, antidotal, analgesic, and anti-inflammatory purpose. The pharmacological effects of Propolis are known to be anti-bacterial, anti-inflammatory, anti-tumor, and immunopotentiating. Propolis was extracted with water, the extract was centrifuged, and the supernatant was filtered and freeze-dried. It was then gel-filtered and purified according to the increase in the ratio of mouse lymphocytes versus polymorphonuclear leukocytes(L/P activity). We previously reported the immunopotentiating effects of Propolis at the 114the General Conference of the Japan Society of Pharmacology(March, 1994 : Tokyo) and its anti-tumor effects on solid and ascitic tumors in mice bearing Ehrlich carcinoma at the 53rd General Conference of the Japanese Cancer Association(October, 1994 : Nagoya). Furthermore we reported the anti-tumor and anti-cytopenic effects of combined use of water-soluble Propolis and its gel-filtration fractions G-1, G-2, and G-3 with anti-cancer drugs(5FU and MMC) in ICR mice(5-week-old males) bearing Ehrlich carcinoma at the 115th General Conference of the Japan Society of Pharmacology(March, 1995 : Sendai). The tumor growth was inhibited, and cytopenia due to 5FU was significantly alleviated(Pr.<0.01 for WBS and RBC), when water-soluble Propolis was administered with 5FU as compared with 5FU alone(inhibition rate 83.0%). When water-soluble Propolis and its gel-filtration fractions G-1 and G-2 were administered with MMC, the tumor growth was more suppressed(inhibition rates 91.8%, 88.0%, and 82.0%, respectively) than by intraperitoneal administration of MMC alone. In addition, leukopenia was significantly alleviated(Pr.<0.05) by administration of water-soluble and G-2 with MMC as compared with MMC alone(54th General Conference of the Japan Cancer Society : Oct., 1995 : Kyoto). Aithouse, the active component responsible for the anti-tumor activity of water-soluble Propolis has been identified, and its anti-tumor effects likely to be derived from stimulation of host responses as well as direct effects on cancer cells, because water-soluble Propolis and its gel-filtration fractions increased the L/P activity and antibody-producing cells(PFC activity). Water-soluble Propolis, G-1 and G-2 had preventive effects on cytopenia induced by anti-cancer drugs, probably because they exert stimulatory effects on hemopoietic functions via cytokines such as IL-6 and IL-11. We intended to analyze components of G-1 and G-2, which showed potent anti-tumor effects, by high-performance liquid chromatography.
Kaoru Yamashita,Akira Tsuchitani,Hideyuki Murakami,Masanori Okuyama,Shigeru Arita,Tsunehisa Tanaka,Yaowu Mo,Yoshihiko Suzuki 한국물리학회 2003 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.42 No.IV
Arrayed ultrasonic microsensors using piezoelectric PZT (Pb(Zr,Ti)O3) thin lms on micromachined silicon diaphragms have been fabricated and combined with BBD (Backet Brigade Device) for signal processing. The ultrasonic sensors are designed to compose an electrical phased array for three-dimensional object detection in air. The resonant frequencies of the elements were scattered in the error range of 12 % and the objects could not be detected due to the beat in the sum of delayed element waveforms. Each element has been tuned by adequate poling less than 10 V to make its resonant frequency equal to a center value. The frequency scattering was reduced within the range of 2 % and the tuned array could give the objects by summing up of the delayed signals. Three-dimensional object detection has been demonstrated using the tuned sensor combined with the BBD delay circuit.4
Kazuki Fujimoto,Kazuhide Inage,Yawara Eguchi,Sumihisa Orita,Miyako Suzuki,Go Kubota,Takeshi Sainoh,Jun Sato,Yasuhiro Shiga,Koki Abe,Hirohito Kanamoto,Masahiro Inoue,Hideyuki Kinoshita,Masaki Norimoto 대한척추외과학회 2018 Asian Spine Journal Vol.12 No.5
Study Design: Cross-sectional observational study. Purpose: To compare measurements of appendicular skeletal muscle mass (ASMM) and whole fat mass (WFM) obtained using dualenergy X-ray absorptiometry (DXA) and bioelectrical impedance analysis (BIA) among patients with low back pain (LBP). Moreover, the study investigated the correlation between BIA-based ASMM and DXA-based bone mineral density (BMD). Overview of the Literature: If reliable, BIA may be a useful alternative to DXA as a screening tool for sarcopenia and osteoporosis among patients with LBP. Methods: Measurements were performed in 130 patients, including BMD of the lumbar spine and femoral neck. The correlation between DXA and BIA as well as between BIA-ASMM and BMD were evaluated. Results: BIA and DXA were highly correlated in both male and female patients (r =0.73–0.90, p <0.0001). However, BIA consistently overestimated ASMM by 1.5–2.5 kg on an average (p <0.0001) and underestimated WFM (−4.0 to −2.7 kg) on an average (p <0.0001). BIA-based ASMM correlated with BMD of the lumbar spine in both male and female patients (r =0.28–0.37, p ≤0.02) and that of the femoral neck (r =0.34–0.51, p ≤0.005). Regarding the calculated skeletal muscle index (SMI: ASMM/height [m2]) used as a criterion for sarcopenia, BIA-based SMI correlated with BMD of the lumbar spine in male patients (r =0.44, p =0.0004) and that of the femoral neck in female patients (r =0.33, p =0.009). Conclusions: BIA may be a favorable alternative to DXA as a screening tool for sarcopenia and osteoporosis among patients with LBP. Considering the overestimation of BIA-based ASMM and SMI, we recommend using the cutoff values for sarcopenia of 7.9 kg/m2 for males and 6.1 kg/m2 for females.