Asahi Kasei Corporation and Taisei Corporation | Date: 2016-08-29
[Problem to be Solved] An object of the present invention is to provide an aqueous writing tool for a food product packaging material, which can provide written products having high color developability and fixing properties upon writing on food product packaging materials. [Solution] An aqueous writing tool for a food product packaging material comprising an ink comprising two or more pigments and one or more dispersants, wherein
Asahi Kasei Corporation and Taisei Corporation | Date: 2016-08-29
[Problem to be Solved] An aqueous writing tool for a food product packaging material, comprising an ink with which writing can be done on food product packaging materials without being repelled can be provided. [Solution] An aqueous writing tool for a food product packaging material comprising an ink comprising a pigment, wherein the ink has a contact angle with a food product packaging material of 30 to 46.
Taisei Corporation, Osaka University and School Juridical Person The Kitasato Institute | Date: 2017-08-16
To provide an effective 1,4-dioxane-degrading bacteria culture method. Provided is a 1,4-dioxane-degrading bacteria culture method in which 1,4-dioxane-degrading bacteria are propagated using a medium containing diethylene glycol.
Yokoi M.,Taisei Corporation
Refrigeration Science and Technology | Year: 2015
This factory was built as base of herb medicine product, process and storage in Yubari, Hokkaido. It has three cold storages where 20m width, 60m depth and 6m height for keeping herb medicine. The Air-Conditioning system for this cold storage was planned based on three concepts, Economical, Reliability and Regionality. In order to achieve the purpose of this Air-Conditioning system such as to eliminate redundant storage space, to keep the room temperature and humidity as less than 15 degree or 60%, and to reduce the running cost, Ductless Air-Conditioning System using Coanda Effect and horizontal panel has been provided. CFD analysis has been used to determine the detail of this system, the number and layout of inducted-draft fans, the length of the horizontal panel, during design stage. And it was verified by actual measurement after the completion of construction. Compared to this system and original one, around 60% of electrical capacity was reduced.
Anderson J.G.,University of Nevada, Reno |
Uchiyama Y.,Taisei Corporation
Bulletin of the Seismological Society of America | Year: 2011
Path effects that are unique to the source-site geometry increase the uncertainties in ground-motion prediction equations (GMPEs). A methodology is proposed to deal with this issue. First a GMPE is developed, including site and event terms. A map of the logarithmic residuals may show that there are regions in which the spatial average is different from zero. The smoothed residuals become an additional correction to the GMPE. In principle, the contour maps of these corrections are unique to each strong-motion station, but maps of nearby stations should be correlated. The potential for path corrections to significantly improve ground-motion prediction at individual stations is tested first in a simplified pilot application on a small subset of Japanese peak-acceleration and peak-velocity data. For these data, the standard deviations to GMPEs without station or path corrections are in the range of 0.76 to 0.85 (in natural-log units). With the corrections the standard deviations are reduced to a range from 0.25 to 0.35. The method is also applied more strictly to the prediction of peak acceleration and peak velocity in Guerrero, Mexico. The result is reduction of the estimated standard deviation from 0.70 to 0.35 for peak acceleration and fro m 0.64 to 0.40 for peak velocity. After accounting for the path terms, the standard deviation at individual stations (single-station sigma) is estimated to be 0.51 and 0.48 for peak acceleration and peak velocity, respectively. This approach may be particularly appropriate for the design of critical structures with long lead times in their planning and design. If broadband and strong-motion stations are installed at the intended site immediately after site selection, site-specific corrections determined from background seismicity during the design stages can be used to refine and defend the design during the approval process.
Yamamoto H.,Taisei Corporation |
Doughty C.,Lawrence Berkeley National Laboratory
International Journal of Greenhouse Gas Control | Year: 2011
Potential errors caused by grid shape and resolution are investigated for numerical simulations of CO2 geologic sequestration. The spatial orientation of finite difference grids can strongly influence the calculated shapes of CO2 fronts due to so-called "grid orientation effect" A coarse vertical discretization of a reservoir can impede gravity override (i.e., less-dense CO2 flows over denser groundwater) of CO2 plumes, resulting in underestimation of the maximum plume size. It is known that injection of CO2 into a saline aquifer may cause formation dry-out and precipitation of solid salt near the injection well, which may reduce porosity and permeability of the aquifer. Numerical simulation of salt precipitation may require very fine grid size near the injection well, because dry-out would be greatly underestimated in a large grid block containing a large amount of water. In this study, these gridding effects are demonstrated using one-dimensional and two-dimensional idealized models as well as a three-dimensional field-scale simulation model of a large-volume CO2 injection in a saline formation in California's Central Valley. For the field-scale modeling, we generated a high-resolution grid model utilizing Voronoi tessellation. To solve the high-resolution model efficiently TOUGH-MP, a parallelized version of general purpose multi-phase flow simulator TOUGH2, was used. Our results indicate that (1) the use of higher-order Voronoi tessellation significantly reduces the "grid-orientation effects"; (2) coarse grids considerably underestimate gravity override, and thus the maximum lateral extent of a CO2 plume is also underestimated to a few tens of percent; (3) a fine gridding in the vicinity of the injection well may be needed to simulate near-well phenomena accurately, especially when the capillary-driven backflow to the well is significant. © 2011 Elsevier Ltd.
Matsuhisa T.,Taisei Corporation
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) | Year: 2016
This paper starts epistemic approaches of studying the Bayesian routing problem in the frame work of the network game introduced by Koutsoupias and Papadimitriou [LNCS 1563, pp.404–413. Springer (1999)]. It highlights the role of common-knowledge on the users’ individual conjectures on the others’ selections of channels in the network game. Especially two notions of equilibria are presented in the Bayesian extension of the network game; expected delay equilibrium and rational expectations equilibrium, such as each user minimizes own expectations of delay and social cost respectively. We show that the equilibria have the properties: If all users commonly know them, then the former equilibrium yields a Nash equilibrium in the based KP-model and the latter equilibrium yields a Nash equilibrium for social cost in the network game. © Springer-Verlag Berlin Heidelberg 2016.
Uno H.,Taisei Corporation
15th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, ARC 2015: New Innovations and Sustainability | Year: 2015
Due to the 2011 off the Pacific Coast of Tohoku Earthquake, a large scale tsunami hit the Pacific coast area of the Tohoku and North-Kanto Regions, Japan. As a result of the earthquake and the subsequent tsunami, the tsunami-related sediments of about 900,000 tons were generated in Kesennuma City, Miyagi Prefecture. Therefore, the tsunami-related sediments had to be properly treated from the viewpoint of being recycled as non-toxic geomaterials and certainly utilized as embankments or filling materials in reconstruction projects. Additionally, it was required that they were quickly treated in order to preserve the living environment of local inhabitants and to improve the public health. In a disaster waste management project by the Miyagi prefectural government in Kesennuma (Kesennuma treatment area), the treatment (soil modification, separation, immobilization, etc.) and recycling of tsunami-related sediments were completed in about one year. This paper summarizes the outline of the treatment of tsunami-related sediments and describes the geotechnical properties of recycled geomaterials in the Kesennuma treatment area.
Taisei Corporation | Date: 2013-08-19
A cementitious matrix in which the development of early strength is fast, the hydration heat temperature is small, and the amount of shrinkage during curing is small, while keeping the fluidity when concrete is fresh, is provided. The cementitious matrix is characterized by comprising 100 parts by weight of Portland cement, 5 to 30 parts by weight of silica fume, 5 to 25 parts by weight of limestone powder, 30 to 80 parts by weight of at least one of ground blast furnace slag or fly ash, at least one chemical admixture, water, and 70 to 150 parts by weight of aggregate having a largest aggregate diameter of 1.2 to 3.5 mm.
Taisei Corporation | Date: 2012-11-14
Provided is a fiber reinforced cement based mixed material having high tensile strength and high toughness, the mixed material comprising a cementitious composition with fast development of early strength; a small hydration heat temperature; and a small shrinkage during curing. The fiber reinforced cement based mixed material contains 100 wt. parts of cement, 5-30 wt. parts of silica fume, 30-80 wt. parts of at least one pozzolanic material excluding the silica fume, 5-25 wt. parts of limestone powder, at least one chemical admixture, water, 70-150 wt. parts of aggregate having a largest aggregate diameter of 1.2-3.5 mm, and fibers, wherein at least some of the fibers comprise a fiber having asperities formed in the surface, the fiber having asperities being formed such that a ratio (h/H) of a depth h of each of recessed portions among the asperities to a smallest cross-sectional diameter H thereof is 0.05-0.8.