Search Results - (Author, Cooperation:S. Sugiyama)
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1Samuel S. Urlacher, Peter T. Ellison, Lawrence S. Sugiyama, Herman Pontzer, Geeta Eick, Melissa A. Liebert, Tara J. Cepon-Robins, Theresa E. Gildner, J. Josh Snodgrass
National Academy of Sciences
Published 2018Staff ViewPublication Date: 2018-04-25Publisher: National Academy of SciencesPrint ISSN: 0027-8424Electronic ISSN: 1091-6490Topics: BiologyMedicineNatural Sciences in GeneralPublished by: -
2Iwano, S., Sugiyama, M., Hama, H., Watakabe, A., Hasegawa, N., Kuchimaru, T., Tanaka, K. Z., Takahashi, M., Ishida, Y., Hata, J., Shimozono, S., Namiki, K., Fukano, T., Kiyama, M., Okano, H., Kizaka-Kondoh, S., McHugh, T. J., Yamamori, T., Hioki, H., Maki, S., Miyawaki, A.
American Association for the Advancement of Science (AAAS)
Published 2018Staff ViewPublication Date: 2018-02-23Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyGeosciencesComputer ScienceMedicineNatural Sciences in GeneralPhysicsKeywords: Cell BiologyPublished by: -
3Staff View
Publication Date: 2018-09-26Publisher: National Academy of SciencesPrint ISSN: 0027-8424Electronic ISSN: 1091-6490Topics: BiologyMedicineNatural Sciences in GeneralPublished by: -
4J. Pither ; L. H. Fraser ; A. Jentsch ; M. Sternberg ; M. Zobel ; J. Cahill ; C. Beierkuhnlein ; S. Bartha ; J. A. Bennett ; B. Boldgiv ; L. R. Brown ; M. Cabido ; G. Campetella ; C. N. Carlyle ; S. Chelli ; A. M. Csergo ; S. Diaz ; L. Enrico ; D. Ensing ; A. Fidelis ; H. W. Garris ; H. A. Henry ; M. Hohn ; J. Klironomos ; K. Koorem ; R. Lawrence-Lodge ; P. Manning ; R. J. Mitchell ; M. Moora ; V. D. Pillar ; G. C. Stotz ; S. Sugiyama ; S. Szentes ; R. Tungalag ; S. Undrakhbold ; C. Wellstein ; T. Zupo
American Association for the Advancement of Science (AAAS)
Published 2016Staff ViewPublication Date: 2016-01-30Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyComputer ScienceMedicineNatural Sciences in GeneralPhysicsKeywords: *Biodiversity ; *Grassland ; *Plant DevelopmentPublished by: -
5L. H. Fraser ; J. Pither ; A. Jentsch ; M. Sternberg ; M. Zobel ; D. Askarizadeh ; S. Bartha ; C. Beierkuhnlein ; J. A. Bennett ; A. Bittel ; B. Boldgiv ; Boldrini, II ; E. Bork ; L. Brown ; M. Cabido ; J. Cahill ; C. N. Carlyle ; G. Campetella ; S. Chelli ; O. Cohen ; A. M. Csergo ; S. Diaz ; L. Enrico ; D. Ensing ; A. Fidelis ; J. D. Fridley ; B. Foster ; H. Garris ; J. R. Goheen ; H. A. Henry ; M. Hohn ; M. H. Jouri ; J. Klironomos ; K. Koorem ; R. Lawrence-Lodge ; R. Long ; P. Manning ; R. Mitchell ; M. Moora ; S. C. Muller ; C. Nabinger ; K. Naseri ; G. E. Overbeck ; T. M. Palmer ; S. Parsons ; M. Pesek ; V. D. Pillar ; R. M. Pringle ; K. Roccaforte ; A. Schmidt ; Z. Shang ; R. Stahlmann ; G. C. Stotz ; S. Sugiyama ; S. Szentes ; D. Thompson ; R. Tungalag ; S. Undrakhbold ; M. van Rooyen ; C. Wellstein ; J. B. Wilson ; T. Zupo
American Association for the Advancement of Science (AAAS)
Published 2015Staff ViewPublication Date: 2015-07-18Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyComputer ScienceMedicineNatural Sciences in GeneralPhysicsKeywords: *Biodiversity ; Biomass ; *Grassland ; *Plant Development ; Stress, PhysiologicalPublished by: -
6Sugiyama, S. ; Ohgaki, H. ; Mikado, T. ; Yamada, K. ; Chiwaki, M. ; Suzuki, R. ; Sei, N. ; Ohdaira, T. ; Noguchi, T. ; Yamazaki, T. ; Isojima, S. ; Usami, H. ; Suzawa, C. ; Masuda, T. ; Keishi, T. ; Hosoda, Y.
[S.l.] : American Institute of Physics (AIP)
Published 1995Staff ViewISSN: 1089-7623Source: AIP Digital ArchiveTopics: PhysicsElectrical Engineering, Measurement and Control TechnologyNotes: The 10-T wiggler is an iron-cored superconducting wiggler destined for Electrotechnical Laboratory's 800-MeV electron storage ring to enhance the available radiation. The design and manufacturing contract for this magnet was started in April 1990 and was preceded by a feasibility study. The major features of the magnet are described in the article. Also, the effect of the superconducting wiggler with high magnetic field on the stored electron beam has been simulated. © 1995 American Institute of Physics.Type of Medium: Electronic ResourceURL: -
7Yagi, K. ; Yuri, M. ; Sugiyama, S. ; Onuki, H.
[S.l.] : American Institute of Physics (AIP)
Published 1995Staff ViewISSN: 1089-7623Source: AIP Digital ArchiveTopics: PhysicsElectrical Engineering, Measurement and Control TechnologyNotes: Calculations of the radiation from a four-period polarizing undulator by use of the general radiation equation and numerical integration including the effects of electron-beam emittance, energy spread, and finite observation distance are presented. Accurate electron-beam profiles have been experimentally determined and modeled by the Monte Carlo method. Good agreement is found in spectral intensity between the measured and calculated spectra. © 1995 American Institute of Physics.Type of Medium: Electronic ResourceURL: -
8Yokoyama, M. ; Kawai, M. ; Hamada, S. ; Owaki, K. ; Yamazaki, T. ; Mikado, T. ; Yamada, K. ; Sei, N. ; Sugiyama, S. ; Ohgaki, H. ; Noguchi, T. ; Suzuki, R. ; Chiwaki, M.
[S.l.] : American Institute of Physics (AIP)
Published 1995Staff ViewISSN: 1089-7623Source: AIP Digital ArchiveTopics: PhysicsElectrical Engineering, Measurement and Control TechnologyNotes: The system of single bunch injection (SBI) for the storage ring NIJI-IV was completed. The system was used for the injection of the short pulse beams from an electron gun into only one of the 16 rf buckets in the ring. On a compact storage ring, the multipulse beams in one pulse train can be stored into only one of many bunches by one injection. The optimum number of the grid pulse in one pulse train was determined to improve the storage efficiency and the storage current by one injection. The keeping time of the bump orbit was calculated by using the transfer matrices. The optimum pulse number obtained by the calculation is 2. In the SBI system, the number of grid pulses in one pulse train can be selected by the gate circuit. A snap off diode and a clip line are used to generate 2 ns grid pulses. The measured grid pulse was shorter than the longitudinal space 5.5 ns of the rf bucket with voltage of −80 V. The EIMAC Y-646B cathode-grid assembly is used as the electron source. It is expected that the injection system provides a higher peak current and easier free electron laser use operation in comparison with the rf-knockout system. © 1995 American Institute of Physics.Type of Medium: Electronic ResourceURL: -
9SUGIYAMA, S. ; YONEYAMA, M. ; TAKAHASHI, N. ; GOTOH, K.
Oxford, UK : Blackwell Publishing Ltd
Published 1985Staff ViewISSN: 1365-2494Source: Blackwell Publishing Journal Backfiles 1879-2005Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, NutritionNotes: Canopy structure, productivity and their relationships were examined in 2-year-old swards of fourteen tall fescue (Festuca arundinacea Schreb.) strains during the vegetative and reproductive growth stages. During the vegetative growth stage morphological characters, particularly tiller size, were closely associated with productivity. Swards with large tillers showed an effective distribution of the incoming light energy within the canopy and hence low extinction coefficient (K) value and high productivity at complete light interception. On the other hand, although there was no apparent correlation between K and the productivity or the whole crop during the reproductive growth stage, the productivities of the reproductive and vegetative tillers were positively and negatively related to K respectively. Leaf area index of the reproductive tillers and their position in the canopy had marked effects on the distribution of the incoming light energy within the canopy and on the productivity of both types of tillers. The productivity of the vegetative and the reproductive tillers is discussed in terms of the effect of the competition for incoming light energy between both types of tillers.Type of Medium: Electronic ResourceURL: -
10Nakao, M. ; Sugiyama, S. ; Hatamura, Y. ; Hamaguchi, T. ; Watanabe, K.
[S.l.] : American Institute of Physics (AIP)
Published 1996Staff ViewISSN: 1089-7550Source: AIP Digital ArchiveTopics: PhysicsNotes: Nowadays contact recording has become one of the most important mechanisms for high-density recording of HDD. The contact recording head is always subject to friction when sliding. If the friction causes vibration on the sliding head, the swaying of the head is likely to lead to some undesirable bit shifts. The authors previously measured the head movement in sliding with a Watrous-type suspension where it was verified that the front edge of the head fell down to the disk surface because the rotational center of the pitching motion of the head was located above the sliding surface, inducing a heavy sticking. In order to prevent the sticking from occurring, we have already proposed RCC (remote centered compliance) suspension (15 mm in thickness) which consists of a pair of inclined plates. With this suspension, the front edge of the head is raised up because of the enhanced location of the rotational center which is now below the sliding surface. In this article we present a newly designed micro-RCC suspension (125 μm in thickness) for an acutal small MR head (1×1×0.5 mm) of the contact recording. It has two pairs of the inclined plates structure for two-axis frictions which are caused by seeking and tracking motions of the head, respectively.This suspension is fabricated from a 125 μm thick sheet of polyimide using the ultraviolet laser beam. We evaluate its movement in sliding at low speed (50 μm/s) and at high speed (2 m/s) under a 10 mN load on a sputtered disk, respectively. The normal and frictional forces are measured by a micro two-axis force sensor (0.01 mN resolution) with parallel-plate structure and the pitching motion of the head is measured by an inclination sensor by means of laser reflection angle measurement (10 μrad resolution). From the experiment at low speed, we have clarified that the head yields a stable friction (0.15±0.02 mN) and has the nose-up attitude (0 to + 100 μrad). In addition, from the evaluation at high speed, we have observed the stable read-back signal (±7% modulation) because of the stable motion without any sticking. As a reference suspension, we prepare a micro-Winchester-type suspension. From the similar evaluation, we have identified that the reference head shows unstable friction (0.25±0.1 mN) with the nose-down attitude (0 to −500 μrad) and an unstable signal (±50% modulation). We have confirmed through these observations that the micro-RCC suspension will be an indispensable tool for contact recording in order to realize a stable recording against the friction. © 1996 American Institute of Physics.Type of Medium: Electronic ResourceURL: -
11Sugiyama, S. ; Yang, J. ; Guha, S.
Woodbury, NY : American Institute of Physics (AIP)
Published 1997Staff ViewISSN: 1077-3118Source: AIP Digital ArchiveTopics: PhysicsNotes: We have studied light-induced degradation in hydrogenated and deuterated amorphous silicon alloy solar cells. Replacing hydrogen with deuterium in the intrinsic layer of the cell improves stability against light exposure. Possible explanations for the improved stability are discussed. © 1997 American Institute of Physics.Type of Medium: Electronic ResourceURL: -
12Sugiyama, S. ; Yamazaki, T. ; Noguchi, T. ; Nakamura, T. ; Mikado, T. ; Chiwaki, M. ; Suzuki, R. ; Tomimasu, T. ; Sato, S. ; Usami, H.
[S.l.] : American Institute of Physics (AIP)
Published 1989Staff ViewISSN: 1089-7623Source: AIP Digital ArchiveTopics: PhysicsElectrical Engineering, Measurement and Control TechnologyNotes: The bunch length was measured by using a highly sensitive streak camera with a time resolution of 2 ps. It was found that fine structures appeared in the electron bunch shape and that the shapes of electron bunches were described by a Gaussian distribution on the average. The dependence of bunch length on beam current was measured for an electron beam of 607 MeV. The bunch length was well represented by a power function of beam current with an exponent of 0.197 at currents lower than 35 mA or 0.30 at high currents. The experimental results suggest that the longitudinal coupled-bunch beam instability takes place at low beam currents and the turbulent instability dominates at high currents. It was also found from the three-dimensional bunch shape measurements that the bunch shape tended to blow up at high currents.Type of Medium: Electronic ResourceURL: -
13Takada, H. ; Tsutsui, Y. ; Tomimasu, T. ; Sugiyama, S.
[S.l.] : American Institute of Physics (AIP)
Published 1989Staff ViewISSN: 1089-7623Source: AIP Digital ArchiveTopics: PhysicsElectrical Engineering, Measurement and Control TechnologyNotes: A study of high beam current storage at a low energy is being conducted on the compact electron storage ring NIJI-1. In general, it is said that the stored beam lifetime is rapidly shortened as the beam energy decreases, and the high beam current storage is difficult to obtain. However, a stored beam current above a 350 mA was obtained at an injection energy of 100 MeV, and the lifetime of the stored beam is considerably long. For example, e-folding lifetime is about 2 h at 100 MeV. In this paper, we estimate the beam current decay rate due to the residual gas scattering, the ion trapping effect, and the Touschek effect, and make clear these contributions to the beam lifetime. It was clear that the Touschek lifetime is lengthened according to the bunch size growth, which is roughly explained by the longitudinal coupled bunch instability.Type of Medium: Electronic ResourceURL: -
14Sugiyama, S. ; Ohgaki, H. ; Mikado, M. ; Noguchi, T. ; Yamada, K. ; Chiwaki, M. ; Suzuki, R. ; Koike, M. ; Yamazaki, T. ; Tomimasu, T. ; Keishi, T. ; Usami, H. ; Hosoda, Y.
[S.l.] : American Institute of Physics (AIP)
Published 1992Staff ViewISSN: 1089-7623Source: AIP Digital ArchiveTopics: PhysicsElectrical Engineering, Measurement and Control TechnologyNotes: The design of a 10-T superconducting wiggler as a synchrotron radiation source for angiography has been carried out to be installed in an 800-MeV electron storage ring, TERAS, at Electrotechnical Laboratory (ETL). Synchrotron radiation generated by the wiggler has a critical photon energy of 4.47 keV and the radiation spectrum identical to that from a 2.5-GeV storage ring with a bending radius of 8.3 m. The magnet of the wiggler consists of three pairs of iron-cored superconducting coils designed to provide a peak field of 10.5 T on the beam trajectory. The effect of the wiggler on the storage ring has been investigated and a pair of quadrupole doublets on both sides of the wiggler can compensate a large deviation of the betatron tune.Type of Medium: Electronic ResourceURL: -
15Yagi, K. ; Onuki, H. ; Sugiyama, S. ; Yamazaki, T.
[S.l.] : American Institute of Physics (AIP)
Published 1992Staff ViewISSN: 1089-7623Source: AIP Digital ArchiveTopics: PhysicsElectrical Engineering, Measurement and Control TechnologyNotes: A polarizing undulator has been constructed utilizing crossed and retarded magnetic fields that can provide arbitrary polarized radiation. The absolute brightness and polarization characteristics have been studied in the visible region from 350–700 nm at 230 MeV of stored electron energy by varying the observation angle θ. Any desired elliptically polarized radiation was obtainable by adjusting the retardation between the two pairs of magnet arrays.Type of Medium: Electronic ResourceURL: -
16Staff View
ISSN: 1365-2494Source: Blackwell Publishing Journal Backfiles 1879-2005Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, NutritionNotes: The effect of five cultivars of Festuca arundinacea on the botanical composition of mixed swards (with Dactylis glomerata and Trifolium repens singly and combined) at two soil fertility levels (moderate fertilizer application and no application) were examined. Shoot and root morphological characteristics of seedlings in each cultivar were also examined under pot conditions.Although there was little difference in the total biomass of the three mixed swards between cultivars, the cultivars showed significant differences in their relative contribution to total biomass. The relative order of competitive ability between cultivars was maintained over the different soil fertility levels and different species associations.Of the two yield components of a grass sward, tiller number and tiller size, number of tillers showed a larger response to the presence of neighbour species than mean tiller size, and thus success of F. arundinacea cultivars in mixed swards depended on the extent of reduction of number of tillers caused by the neighbour species of mixtures. The least competitive cultivar had the smallest seeds and shortest roots.Type of Medium: Electronic ResourceURL: -
17SUGIMOTO, M. ; SUGIYAMA, S. ; YANAGITA, N. ; OZAWA, T.
Oxford, UK : Blackwell Publishing Ltd
Published 1994Staff ViewISSN: 1365-2222Source: Blackwell Publishing Journal Backfiles 1879-2005Topics: MedicineNotes: This study was designed to analyse prostaglandins (PGs) in human nasal lavage- fluid using the combination of microcolumn high performance liquid chromatography and a He/Cd laser induced fluorescence detection system. Forty-seven patients with allergic rhinitis and 12 healthy volunteers were investigated. Four species of PG. i.e. PGD2, PGE2, PGF2x and 6-keto-PGF1, were detected in the nasal lavage fluid. Concentrations of PGD2; (1.33 ± 0.17 nmol/ml) and PGE2 (0.87 ± 0.11 nmol/ml) in nasal lavage fluid from patients with allergic rhinitis (the allergy group) were significantly increased compared with those of volunteers (the control group, 0.23 ± 0.16 nmol/ml, 0.29 ±0.19 nmol/ml, respectively). On the other hand, no significant differences were observed in concentrations of cither PGF2x, or 6-keto-PGF1x between the control group and the allergy group. Histamine concentration in nasal lavage fluid was significantly increased in the allergy group (53 ± 7.6 nmol/l) compared with the control group (3.4 ± 1.0 nmol/1). No significant correlation was observed between PGD2 and histamine concentration (r= 0.24), or between PGE2 and histamine concentration (r= 0.08) in nasal lavage fluid from patients with allergic rhinitis. Treatment with oxatomide, an anti-histamine and anti-allergic drug, significantly improved symptom scores, but did not alleviate them completely. Concentrations of each PG detected in nasal lavage fluid did not change significantly after oxatomide treatment. It is concluded that, not only histamine but also PGs, particularly PGD2 and PGE2, might be involved in the genesis of allergic rhinitis.Type of Medium: Electronic ResourceURL: -
18YASUEDA, H. ; MITA, H. ; AKIYAMA, K. ; SHIDA, T. ; ANDO, T. ; SUGIYAMA, S. ; YAMAKAWA, H.
Oxford, UK : Blackwell Publishing Ltd
Published 1993Staff ViewISSN: 1365-2222Source: Blackwell Publishing Journal Backfiles 1879-2005Topics: MedicineNotes: A new set of allergens from Dermatophagoides pteronyssinus and D. farinae (provisionally named DPS and DF5, respectively) was isolated from the whole culture of mites. The apparent molecular weights of both allergens were shown to be 25000 on SDS-PAGE under a reducing condition and 27000 on Sephadex G-75 gel nitration chromatography. Both DP5 and DF5, as well as Der f III, possessed proteolytic activity. The results of substrate specificity and susceptibility to various protease inhibitors of DP5 and DF5 strongly suggested that they belonged to the chymotrypsin-like serine protease family. In sera from 88 mite-allergic patients, specific IgE antibodies to DP5 and/or DF5 were detected in only 41% of the sera by radio-allergosorbent test, while 90% and 93% had specific IgE antibodies to Der p I and/or Der f I and Der p II and/or Der f II, respecti vely.Type of Medium: Electronic ResourceURL: -
19TACHI, K. ; GOTO, H. ; HAYAKAWA, T. ; SUGIYAMA, S.
Oxford, UK : Blackwell Publishing Ltd
Published 1996Staff ViewISSN: 1365-2036Source: Blackwell Publishing Journal Backfiles 1879-2005Topics: MedicineNotes: Background: Gastric mucosal microcirculation is an important factor in the protection of gastric mucosa, and nitric oxide (NO) plays a crucial role in the regulation of regional blood flow. This study was designed to evaluate the effect of cetraxate, an anti-ulcer drug, on water immersion stress-induced gastric lesions in relation to the changes in NO synthase activity. Methods: Gastric lesions were induced in rats by water immersion stress. The effects of cetraxate on NO synthase activity with or without stress was determined enzymatically. Changes in gastric mucosal prostaglandin (PG) contents with or without stress were also determined using high-performance liquid chromatography. Gastric mucosal blood flow was measured by hydrogen gas clearance technique. Results: Water immersion stress-induced gastric lesions. Cetraxate significantly mitigated the lesions but NG-monomethyl-l-arginine (l-NMMA), a specific inhibitor of NO synthase, exacerbated the lesions. The favourable effect of cetraxate was remarkably diminished by administration of l-NMMA. NO synthase activity decreased significantly by 6 h after stress. Cetraxate treatment increased NO synthase activity throughout the experiment in rats with or without stress treatment. Water immersion stress decreased all PGs detected, i.e. 6-keto-PGF1α, PGF2α PGE2 and PGD2. Cetraxate prevented stress-induced decreases in PG contents. l-NMMA showed no significant effect on PG contents. Cetraxate increased gastric mucosal blood flow significantly and l-NMMA cancelled out cetraxate-induced increase in blood flow. Conclusions: The pharmacological efficacy of anti-ulcer drugs such as cetraxate might be attributable to the enhancement of NO synthase activity resulting in an increase in gastric mucosal blood flow.Type of Medium: Electronic ResourceURL: -
20HOSHINO, H. ; GOTO, H. ; SUGIYAMA, S. ; HAYAKAWA, T. ; OZAWA, T.
Oxford, UK : Blackwell Publishing Ltd
Published 1995Staff ViewISSN: 1365-2036Source: Blackwell Publishing Journal Backfiles 1879-2005Topics: MedicineNotes: Aim: To assess the effects of FK506, a newly developed immunosuppressant, on experimental colitis in rats. Methods: Experimental colitis was induced by a single colonic instillation of hapten 2,4,6-trinitrobenzene sulphonic acid (TNB) in anaesthetized rats. Rats received 30 mg TNB dissolved in 0.25 mL of 50% ethanol, and were sacrificed on day 5 following 4 days dosing with FK506 (0.25, 0.5, 1.0, 2.0 mg/kg, s.c.) or vehicle. Mucosal prostanoid concentrations were determined using high performance liquid chromotography. Tissue myeloperoxidase activities were measured. The effects of FK506 on superoxide radical formation by neutrophils in both rats and humans were also estimated in vitro.Results: Administration of FK506 significantly reduced the colonic damage in a dose-dependent manner. Activities of myeloperoxidase and concentrations of 6-keto-prostaglandin Fl1α (6-keto-PGF1α, PGF2α and PGE2 in colonic tissue increased significantly following induction of experimental colitis, however, FK506 did not affect these changes. FK506 reduced stimulant-induced superoxide radical formation by neutrophils in rats and humans. Conclusion: FK506 decreased superoxide radical generation by neutrophils, which might contribute to the lessening of colonic damage in this model.Type of Medium: Electronic ResourceURL: