Tatsuo Yoshida, Keiji Shimizu, Yukitaka Ushio, Toru Hayakawa, H Mogami, Yukiya Sakamoto,
Tópico(s): Molecular Sensors and Ion Detection
1987 - Springer Science+Business Media | Journal of Neuro-Oncology
Tatsuo Yoshida, Keiji Shimizu, Yukitaka Ushio, Tōru Hayakawa, Norio Arita, H Mogami,
✓ Experimental models of meningeal gliomatosis (MG) have been produced by intracisternal inoculation of rat C6 and 9L glioma cells into Wistar and Fischer 344 rats, respectively. Tumor growth was steady and rapid in both MG models when more than 10 6 tumor cells were implanted. The median survival time of the rats inoculated with tumor cells was inversely related to the number of the cells inoculated. The clinicopathological features observed in both MG models were similar to those seen in diffuse leptomeningeal ...
Tópico(s): Glioma Diagnosis and Treatment
1986 - American Association of Neurological Surgeons | Journal of neurosurgery
Mitsuru Kambe, Ryo MORITA, Kazuyuki OMOTO, Yasuhiro Koji, Tatsuo YOSHIDA, Koji Noishiki,
A conceptual design of the thermoelectric power conversion system combined with open rack type LNG (liquefied natural gas) vaporizer to make use of cold heat of LNG is presented. The system performance analysis has been made based on the thermoelectric module performance data obtained at the cryogenic thermoelectric (CTE) test rig which could realize temperature and fluid dynamic condition of the open rack type LNG vaporizer. Conventional bismuth-telluride thermoelectric modules were tested, however, ...
Tópico(s): Advanced Thermodynamic Systems and Engines
2008 - Japan Society Mechanical Engineers | Journal of Power and Energy Systems
Tatsuo Yoshida, Hiroshi Murakawa, Kei Toda,
A simple and rapid method for the measurement of a neonicotinoid pesticide, nitenpyram, and its metabolites, CPMA and CPMF, was investigated. The three compounds were determined individually and simultaneously by simple ultrasonic extraction followed by hydrophilic interaction liquid chromatography-tandem mass spectrometry (HILIC-MS/MS). Good chromatograms were obtained using a non-modified silica gel column. The calibration curves were straight (R2>0.999) for each compound; they were 0.002–2 mg/kg ...
Tópico(s): Insect-Plant Interactions and Control
2013 - Pesticide Science Society of Japan | Nippon Nōyaku Gakkaishi
Tatsuo Yoshida, Hirotoshi Hamada, Hiroshi Murakawa, Hidekazu Yoshimoto, Toshiaki Tobino, Kei Toda,
A simple method was developed to determine histamine, an important compound in chemical food poisoning, by extraction followed by hydrophilic interaction chromatography-tandem mass spectrometry using a hydrophilic column with sulfobetaine-type zwitterion groups. The quantitation range in seafood products was from 0.4 to 200 mg kg(-1) for 5 g food samples. Quantitative recoveries were obtained with four types of seafood product. These results agreed well with those from the more complex, conventional ...
Tópico(s): Advanced Chemical Sensor Technologies
2012 - Springer Nature | Analytical Sciences
Tatsuo Yoshida, Keiji Shimizu, Yukitaka Ushio, H Mogami, Yukiya Sakamoto,
✓ Reserpine enhanced in vitro the cytotoxicity of 1-(4-amino-2-methyl-5-pyrimidinyl) methyl-3-(2-chloroethyl)-3-nitrosourea hydrochloride (ACNU) in both the C6 glioma and its ACNU-resistant subline, C6/ACNU. Reserpine also enhanced the chemotherapeutic effect of ACNU in C6/ACNU-bearing (C6/ACNU-meningeal gliomatosis) rats, in which ACNU resistance could be modulated by combined ACNU and reserpine therapy. When 10 μ M reserpine was added to ACNU in culture, the concentration of drug required for 50% inhibition ...
Tópico(s): Neuroscience and Neuropharmacology Research
1987 - American Association of Neurological Surgeons | Journal of neurosurgery
Kunio Yoshida, Tatsuo Yabe, Hazuki Yoshida, Chiyoe Yamanaka,
Theoretical interpretation of damage formation in coated optical glasses is given and its low damage threshold is found to be due to the energy confinement in a narrow gap between the glass substrate and the coated material. The experiments supporting this mechanism are conducted with noncoated, hard-coated, and porous-coated glasses.
Tópico(s): Glass properties and applications
1986 - American Institute of Physics | Journal of Applied Physics
Fumitake Yoshida, Tatsuo Tanaka,
... ISSUEPREVArticleNEXTAir-Water Contact Operations in a Packed ColumnFumitake Yoshida and Tatsuo TanakaCite this: Ind. Eng. Chem. 1951, 43, 6, ...
Tópico(s): Water Systems and Optimization
1951 - American Chemical Society | Industrial & Engineering Chemistry
Izumoto Yoshitaka, Takaaki Sato, Yaniamoto Tatsuo, Nobuo Yoshida, Kikuchi Norihisa, Michio Ogawa, Kenichi Matsubara,
Human pancreatic secretory trypsin inhibitor (PSTI) cDNA was expressed in Saccharomyces cerevisiae using the yeast acid phosphatase PH05 promoter. The product encoded by the PSTI-coding cDNA was correctly processed m yeast cells, and the PSTI molecules were efficiently secreted into the medium. The amino acid composition and the N-terminal amino acid sequence of the secreted PSTI molecules were identical to those of the authentic PSTI polypeptides from human pancreas, and the product exhibited trypsin- ...
Tópico(s): Peptidase Inhibition and Analysis
1987 - Elsevier BV | Gene
Mitsuru Kambe, Ryo MORITA, Kazuyuki OMOTO, Yasuhiro Koji, Tatsuo YOSHIDA, Koji Noishiki,
Performance of thermoelectric (TE) modules for the TE power conversion system combined with open rack type LNG vaporizer (ORV) is discussed. Most of the conventional BiTe TE modules suffer sudden decrease of the power at cryogenic temperature as low as -160°C. This is called as Mayer-Marschall effect. Authors investigated the cause of this effect and found TE modules that could avoid such effect. Performance data of such TE modules obtained at the cryogenic thermoelectric (CTE) test rig which could ...
Tópico(s): Spacecraft and Cryogenic Technologies
2010 - Japan Society Mechanical Engineers | Journal of Power and Energy Systems
Takashi Sakuma, Masayuki Saijo, Tatsuo Suzutani, I. Yoshida, Seiichi Saito, Masayuki Kitagawa, S Hasegawa, Miyuki Azuma,
Several new nucleosides with an oxetanosyl-N-glycoside group, named oxetanocins, were evaluated for their antiviral activities against varicella-zoster virus (VZV) in human embryo lung cells. 9-(2-deoxy-2-hydroxy-methyl-beta-D-erythro-oxetanosyl)guanine (OXT-G) and 9-(2-deoxy-2-hydroxymethyl-beta-D-erythro-oxetanosyl)-2- aminoadenine were effective against not only thymidine kinase-positive (TK+) VZV (YS strain) but also thymidine kinase-negative (TK-) VZV (YSR strain), whereas carbocyclic OXT-G was effective ...
Tópico(s): Polyomavirus and related diseases
1991 - American Society for Microbiology | Antimicrobial Agents and Chemotherapy
Tatsuo Inoue, Fusahito YOSHIDA, Nobutada OHNO, Masamichi KAWAI, Yasushi Niitsu, Shoji IMATANI,
Some of the results of the benchmark study on the evaluation of constitutive models are presented as the second phase of the project by the Subcommittee on Inelastic Analysis and Life Prediction of High Temperature Materials, JSMS. By specifying normalized and tempered 214Cr−1Mo steel at 600°C, fourteen kinds of experiments of six categories were performed in combined stress states of tension and torsion: (I) simple and cyclic plastic straining and creep under tension or torsion, (II) multiaxial loading ...
Tópico(s): Metallurgy and Material Forming
1991 - Elsevier BV | Nuclear Engineering and Design
Toshihiko Nagamura, Kyoichi Sasaki, Futoshi Iizuka, Tatsuo Adachi, Iori Yoshida,
Abstract Ultrafast all-optical reflectance control was achieved by photoinduced complex refractive index changes in thin poly(vinyl alcohol) (PVA) films containing water-soluble phthalocyanine at the incident angle corresponding to a sharp guided mode resonance upon excitation with a ns pulsed laser as a writing beam. The rise time of reflectance was less than 20 ns and the fall time was controlled by the lifetime of the excited triplet phthalocyanine, 31 ns for copper phthalocyanine (CuPcS). The ...
Tópico(s): Photonic Crystals and Applications
2002 - Elsevier BV | Optics Communications
Suji TAIRA, Tatsuo Inoue, Toshiyuki Yoshida,
Tópico(s): Fire effects on concrete materials
1969 - Japan Society Mechanical Engineers | Transactions of the Japan Society of Mechanical Engineers
Narimasa Saito, Tatsuo Horiuchi, Mitsutaka Yoshida, Toshio Imai,
The kinetic studies on the reactions of human pancreatic and salivary alpha-amylases with several maltooligosaccharides (maltotetraose, maltopentaose, maltohexaose, and maltoheptaose) were carried out. The susceptibility to hydrolysis with human pancreatic alpha-amylase decreased in the order of maltopentaose, maltohexaose, maltotetraose, and maltoheptaose, while with human salivary alpha-amylase maltopentaose was hydrolysed slightly slower than maltohexaose but fairly faster than maltotetraose or ...
Tópico(s): Microbial Metabolites in Food Biotechnology
1979 - Elsevier BV | Clinica Chimica Acta
Fukuko Kimura, Naoto Mitsugi, Jun Arita, Tatsuo Akema, Kumiko Yoshida,
The effects of intracerebral injections of brain-gut peptides in the preoptic region on the secretion of luteinizing hormone (LH) and prolactin (PRL) were examined in ovariectomized, estrogen-primed rats. Gastrin or cholecystokinin-octapeptide injection in the preoptic region induced a moderate increase of circadian rise of LH secretion in some animals but no appreciable change in PRL secretion. Secretin injection was strikingly effective in increasing circadian rise of LH and PRL secretion. Vasoactive ...
Tópico(s): Regulation of Appetite and Obesity
1987 - Elsevier BV | Brain Research
Katsuya Aoki, Akihide Hirayama, Nobumichi Tanaka, Tatsuo Yoneda, Katsunori Yoshida, Kiyohide Fujimoto, Yoshihiko Hirao,
We conducted two studies to examine the hypothesis that lower urinary tract obstruction induces excessive production of prostaglandin E2 (PGE2) in the bladder in young boys, with consequent overactive bladder (OAB) symptoms. The subjects were boys aged less than 15 years old who were scheduled to undergo surgery in our department from October 2006 to March 2008. In study 1 (n = 25), the patients were divided into two groups based on the presence or absence of lower urinary tract obstruction. In study ...
Tópico(s): Pediatric Urology and Nephrology Studies
2009 - Allied Academies | Biomedical Research
Nobumichi Tanaka, Kazunori Fujimoto, Akihide Hirayama, Tatsuo Yoneda, K Yoshida, Yoshihiko Hirao,
We assessed the variations in stage, prostate specific antigen at diagnosis, Gleason score, risk classification and primary therapy in Japanese prostate cancer patients, and compared with those of the US patients. Between 2004 and 2006, the distribution of primary therapy and clinical characteristics of 2303 newly diagnosed patients at Nara Medical University and its 23 affiliated hospitals were assessed to compare with those of the Cancer of the Prostate Strategic Urological Research Endeavor data ...
Tópico(s): Colorectal Cancer Screening and Detection
2010 - Oxford University Press | Japanese Journal of Clinical Oncology
Nobumichi Tanaka, Kiyohide Fujimoto, Isao Asakawa, Akihide Hirayama, Tatsuo Yoneda, Katsunori Yoshida, Yoshihiko Hirao, Masatoshi Hasegawa, Noboru Konishi,
Purpose The purpose of this study was to prospectively assess the variations in health-related quality of life (HR-QoL) in patients who underwent low–dose rate prostate brachytherapy using iodine-125 seed source during the first year after seed implantation. Methods and Materials Between July 2004 and December 2006, 109 patients underwent low–dose rate brachytherapy. The Medical Outcomes study 36-Item Short Form; the University of California, Los Angeles-Prostate Cancer Index; and the International ...
Tópico(s): Prostate Cancer Treatment and Research
2010 - Elsevier BV | Brachytherapy
Tatsuo Shiina, Kei Yoshida, Masafumi Ito, Yasuyuki Okamura,
Long-range propagation characteristics of an annular beam were examined from the viewpoint of lidar application. The annular beam permits to use a reflecting telescope for transmission and improves the transmission efficiency because it can pass through the telescope without the obstruction of the telescope's secondary mirror. As the annular beam can enlarge up to the telescope diameter, it can be eye-safe and its divergence is also reduced. The annular beam generated by a couple of Axicon prisms; ...
Tópico(s): Near-Field Optical Microscopy
2007 - Elsevier BV | Optics Communications
Tatsuo Igushi, Hideto Yoshida,
We first applied the Twomey iteration method to the low-angle laser light scattering (LALLS) method. The Twomey method is known by the simple iteration algorithm for Fredholm integral equation. However, the algorithm is not applied to the LALLS result itself because the kernel function pattern is not stable. We solved the unstable kernel issue by modifying the Twomey algorithm to fit the LALLS data in this study. The performance of inversion was studied by computer simulation and experimental results ...
Tópico(s): Plant Water Relations and Carbon Dynamics
2011 - American Institute of Physics | Review of Scientific Instruments
Tatsuo Ishikawa, Tomoyuki Yoshida, Kazuhiko Kandori, Takenori Nakayama, Shuichi Hara,
The specific surface area (SA) of the rusts formed by exposing various kinds of steels in different situations was determined by N2 adsorption. The SA values of the rusts increased with the increase of corrosion rate, implying that the rust layers with large SA exhibit a high resistance to corrosion. The suppression of rusting by compact rust layers was interpreted by the blockage of pores in rust layers by the adsorption and capillary condensation of water. The SA values clearly reflect the corrosion ...
Tópico(s): Corrosion Behavior and Inhibition
2006 - Elsevier BV | Corrosion Science
Tatsuo Miyadera, Kiyohide Yoshida,
Abstract The effect of water vapor and SO2 on the selective reduction of nitric oxide over alumina-supported Ag, In, Ga, Sn, and Zn catalysts has been investigated. Water vapor and SO2 had large effect on the reactivity of propene and on the reduction of NO over those catalysts.
Tópico(s): Nanomaterials for catalytic reactions
1993 - Oxford University Press | Chemistry Letters
Sayaka Nakamura, Tatsuo Terashima, Toshiyuki Yoshida, Sachiko Iseki, Yoshiro Takano, Isao Ishikawa, Tamayuki Shinomura,
Gene expression in human periodontal ligament (PDL) was examined by suppression subtractive hybridization to identify genes that are preferentially expressed in tissue compared to cultured PDL fibroblasts. The most enriched genes in a subtracted cDNA library are primarily genes for extracellular matrix components, types I and III collagen, lumican, periostin, and asporin, among others, whose expression conveys unique mechanical properties to the PDL. Also within this group is the gene for follicular ...
Tópico(s): Protease and Inhibitor Mechanisms
2005 - Elsevier BV | Biochemical and Biophysical Research Communications
Tatsuo Shiina, Kei Yoshida, Masafumi Ito, Yasuyuki Okamura,
An in-line type compact micropulse lidar (MPL) with an annular beam was developed for low-altitude cloud measurement. An optical circulator and a couple of axicon prisms for an annular beam were installed on the lidar optics. The advantage of using the in-line MPL is its ability to obtain a near-range measurement with a narrow field of view of 0.1 mrad and to obtain a depolarization measurement of the orthogonally polarized echoes caused by ice crystals of a low-altitude cloud. The total insertion ...
Tópico(s): Orbital Angular Momentum in Optics
2005 - Optica Publishing Group | Applied Optics
Tatsuo Shiina, Kei Yoshida, Masafumi Ito, Yasuyuki Okamura,
An in-line type micropulse lidar (MPL) with an annular beam was designed and the transmitting and receiving characteristics were analyzed. Because the in-line MPL utilizes a common telescope for a transmitter and a receiver and the annular beam always overlaps with the receiver's field of view (FOV), it can measure near-range lidar echoes with a narrow FOV. The transmitting annular beam changes its shape to a nearly nondiffractive beam through propagation. It improves the spatial resolution of the ...
Tópico(s): Optical measurement and interference techniques
2005 - Optica Publishing Group | Applied Optics
G. Meinrath, Yutaka Kato, Tatsuo Kimura, Zenko Yoshida,
Tópico(s): Radioactive element chemistry and processing
1996 - R. Oldenbourg Verlag | Radiochimica Acta
Shin Koyano, Tatsuo Suzutani, I. Yoshida, Miyuki Azuma,
The inhibitory activities of acyclovir (ACV), 1-beta-D-arabinofuranosyl-E-5-(2-bromovinyl)uracil (BV-araU), ganciclovir (GCV), 9-(2-deoxy-2-hydroxymethyl-beta-D-erythro-oxetanosyl)guanine (OXT-G), and (+)-9-[(1R,2R,3S)-2,3-bis(hydroxymethyl)Cyclobutyl]guanine (cOXT-G) on the replication of wild-type and thymidine kinase (TK)-negative strains of herpes simplex virus types 1 and 2 and varicella-zoster virus (VZV) and the wild-type strain of human cytomegalovirus were tested to clarity whether the phosphorylation ...
Tópico(s): Viral-associated cancers and disorders
1996 - American Society for Microbiology | Antimicrobial Agents and Chemotherapy
Hisashi Nagai, Ichiro Kuwahira, Daryl O. Schwenke, Hirotsugu Tsuchimochi, Akina Nara, Tadakatsu Inagaki, Sayoko Ogura, Yutaka Fujii, Keiji Umetani, Tatsuo Shimosawa, Kenichi Yoshida, James T. Pearson, Koichi Uemura, Mikiyasu Shirai,
In sleep apnea syndrome (SAS), intermittent hypoxia (IH) induces repeated episodes of hypoxic pulmonary vasoconstriction (HPV) during sleep, which presumably contribute to pulmonary arterial hypertension (PAH). However, the prevalence of PAH was low and severity is mostly mild in SAS patients, and mild or no right ventricular hypertrophy (RVH) was reported in IH-exposed animals. The question then arises as to why PAH is not a universal finding in SAS if repeated hypoxia of sufficient duration causes ...
Tópico(s): Pulmonary Hypertension Research and Treatments
2014 - Public Library of Science | PLoS ONE
Motoharu Uchida, Tatsuo Miyoshi, G. Yoshida, Kentaro Niwa, Mayumi Mori, Hideyuki Wakabayashi,
A screening test was conducted for environmental samples to isolate halophilic lactic acid bacteria (HLAB) that can act as a starter in a Nori (Porphyra yezoensis)-sauce culture.After 9 months of incubation of enrichment cultures added with 25 kinds of environmental samples, growth of HLAB-like microorganisms was observed in six cultures salted at a 15% w/w level, including culture samples originally from mesopelagic water taken from 321 m-depth and from mountain snow taken at 2450 m-height. Ten strains ...
Tópico(s): Polar Research and Ecology
2014 - Oxford University Press | Journal of Applied Microbiology