Institution
National Institute of Advanced Industrial Science and Technology
Government•Tsukuba, Ibaraki, Japan•
About: National Institute of Advanced Industrial Science and Technology is a government organization based out in Tsukuba, Ibaraki, Japan. It is known for research contribution in the topics: Catalysis & Thin film. The organization has 22114 authors who have published 65856 publications receiving 1669827 citations. The organization is also known as: Sangyō Gijutsu Sōgō Kenkyū-sho.
Topics: Catalysis, Thin film, Carbon nanotube, Hydrogen, Laser
Papers published on a yearly basis
Papers
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TL;DR: In North America and Europe, the pea aphid encompasses ecologically and genetically distinct host races, offering a model system for studies on sympatric speciation.
Abstract: In North America and Europe, the pea aphid ( Acyrthosiphon pisum ) encompasses ecologically and genetically distinct host races, offering a model system for studies on sympatric speciation ([ 1 ][1], [ 2 ][2]). One host race lives on red clover ( Trifolium pratense ) and cannot produce offspring on
506 citations
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University of Otago1, National Institute of Water and Atmospheric Research2, Fisheries and Oceans Canada3, National Institute for Environmental Studies4, University of Tokyo5, Memorial University of Newfoundland6, University of British Columbia7, Hong Kong University of Science and Technology8, Bowling Green State University9, National Institute of Advanced Industrial Science and Technology10, Hokkaido University11, Dalhousie University12, Central Research Institute of Electric Power Industry13, University of Victoria14
TL;DR: The depletion of silicic acid and the inefficient transfer of iron-increased POC below the permanent thermocline have major implications both for the biogeochemical interpretation of times of greater iron supply in the geological past, and also for proposed geo-engineering schemes to increase oceanic carbon sequestration.
Abstract: Iron supply has a key role in stimulating phytoplankton blooms in high-nitrate low-chlorophyll oceanic waters. However, the fate of the carbon fixed by these blooms, and how efficiently it is exported into the ocean's interior, remains largely unknown. Here we report on the decline and fate of an iron-stimulated diatom bloom in the Gulf of Alaska. The bloom terminated on day 18, following the depletion of iron and then silicic acid, after which mixed-layer particulate organic carbon (POC) concentrations declined over six days. Increased particulate silica export via sinking diatoms was recorded in sediment traps at depths between 50 and 125 m from day 21, yet increased POC export was not evident until day 24. Only a small proportion of the mixed-layer POC was intercepted by the traps, with more than half of the mixed-layer POC deficit attributable to bacterial remineralization and mesozooplankton grazing. The depletion of silicic acid and the inefficient transfer of iron-increased POC below the permanent thermocline have major implications both for the biogeochemical interpretation of times of greater iron supply in the geological past, and also for proposed geo-engineering schemes to increase oceanic carbon sequestration.
506 citations
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TL;DR: As monkeys perform schedules containing several trials with a visual cue indicating reward proximity, their error rates decrease as the number of remaining trials decreases, suggesting that their motivation and/or reward expectancy increases as the reward approaches.
Abstract: As monkeys perform schedules containing several trials with a visual cue indicating reward proximity, their error rates decrease as the number of remaining trials decreases, suggesting that their motivation and/or reward expectancy increases as the reward approaches. About one-third of single neurons recorded in the anterior cingulate cortex of monkeys during these reward schedules had responses that progressively changed strength with reward expectancy, an effect that disappeared when the cue was random. Alterations of this progression could be the basis for the changes from normal that are reported in anterior cingulate population activity for obsessive-compulsive disorder and drug abuse, conditions characterized by disturbances in reward expectancy.
505 citations
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TL;DR: The photoelectrochemical properties of porous BiVO4 thin-film electrodes on conducting glass for H2 production from water under visible light were investigated and it is surmised that hybridization between the O-2p and Bi-6s orbitals might contribute to the negative shift of the Bi VO4 valence band.
Abstract: The photoelectrochemical properties of porous BiVO4 thin-film electrodes on conducting glass for H2 production from water under visible light were investigated. BiVO4 films were prepared by the metal-organic decomposition method, and particles were 90-150 nm in diameter. Under visible-light irradiation, H2 and O2 evolved in a stoichiometric ratio (H2/O2 = 2) from an aqueous solution of Na2SO4 with an external bias. The photocurrent increased with addition of methanol. The band structure of BiVO4 was investigated by open-circuit potential, flat-band potential, X-ray photoelectron spectroscopy, and calculations based on density functional theory. The top of the valence-band potential of BiVO4 was shifted negatively compared to the potentials of the conventional oxide semiconductors without Bi. We surmise that hybridization between the O-2p and Bi-6s orbitals might contribute to the negative shift of the BiVO4 valence band. Treatment with an aqueous solution of AgNO3 improved the photocurrent of the BiVO4 electrode significantly. The maximum incident photon-to-current conversion efficiency at 420 nm was 44%. This value was the highest among mixed-oxide semiconductor electrodes under visible light irradiation. AgNO3 treatment also improved the stability of the photocurrent. The Ag+ ion in/on the BiVO4 catalyzed the intrinsic photogeneration of oxygen with the holes.
503 citations
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03 Dec 2003TL;DR: A method to generate whole body motion of a humanoid robot such that the resulted total linear/angular momenta become specified values gives a unified framework to generate various maneuvers of humanoid robots.
Abstract: We introduce a method to generate whole body motion of a humanoid robot such that the resulted total linear/angular momenta become specified values. First, we derive a linear equation, which gives to total momentum of a robot from its physical parameters, the base link speed and the joint speeds. Constraints between the legs and the environment are also considered. The whole body motion is calculated from a given momentum reference by using a pseudo-inverse of the inertia matrix. As examples, we generated the kicking and walking motions and tested on the actual humanoid robot HRP-2. This method, the resolved momentum control, gives us a unified framework to generate various maneuvers of humanoid robots.
503 citations
Authors
Showing all 22289 results
Name | H-index | Papers | Citations |
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Takeo Kanade | 147 | 799 | 103237 |
Ferenc A. Jolesz | 143 | 631 | 66198 |
Michele Parrinello | 133 | 637 | 94674 |
Kazunari Domen | 130 | 908 | 77964 |
Hideo Hosono | 128 | 1549 | 100279 |
Hideyuki Okano | 128 | 1169 | 67148 |
Kurunthachalam Kannan | 126 | 820 | 59886 |
Shaobin Wang | 126 | 872 | 52463 |
Ajit Varki | 124 | 542 | 58772 |
Tao Zhang | 123 | 2772 | 83866 |
Ramamoorthy Ramesh | 122 | 649 | 67418 |
Kazuhito Hashimoto | 120 | 781 | 61195 |
Katsuhiko Mikoshiba | 120 | 866 | 62394 |
Qiang Xu | 117 | 585 | 50151 |
Yoshinori Tokura | 117 | 858 | 70258 |