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Journal of Electromagnetic Analysis and Applications 2010年第7期2卷 450-456页

作者： Nianwen Cao Tetsuo Fuckuchi takashi fujii Zhengrong Chen Jiansong Huang 不详

This paper discusses the uncertainty of ozone differential absorption lidar (DIAL) measurements due to the impact of background signal. The impact of background signal on ozone concentration profiles is proportional to the background intensity and the ratio of return signal intensities at “on” and “off” wavelength ( ) (hereinafter we call it the return signal intensity ratio). Analysis suggests that an appropriate return signal intensity ratio can make the impact of background signal very small, negligible. The simulations based on the analysis coincide with the experimental results. The experimental results show that the impact of background signal is negligible at an appropriate return signal intensity ratio of 0.96 at wavelength pair (280,285 nm). In case of unknown background intensity, we can adjust the laser pulse energy levels at the two wavelengths to obtain an appropriate return signal intensity ratio on the oscilloscope to suppress the impact of background signal and ensure the accuracy of night time ozone measurements.

关键词： Differential Absorption Lidar (DIAL) Ozone

Sorption Characteristics of CO2on Rocks and Minerals in Storing CO2Processes

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Natural Resources 2010年第1期1卷 1-10页

作者： takashi fujii Satomi Nakagawa Yoshiyuki Sato Hiroshi Inomata Toshiyuki Hashida 不详

As CO2 is injected into pore spaces of water-filled reservoir rocks, it displaces much of the pore fluids. In short terms (several to tens of years), the greater part of the injected CO2 is predicted to stay as free CO2 , i.e. in a CO2 rich dense phase that may contain some water. This paper investigates the sorption characteristics for rocks (quartzose arenite, greywacke, shale, granite and serpentine) and minerals (quartz and albite) in the CO2 rich dense phase. The measurements were conducted at 50°C and 100°C, and pressures up to 20 MPa. Our results demonstrated that significant quantities of CO2 were sorbed with all the samples. Particularly, at 50°C and 100°C, quartzose arenite showed largest sorption capacity among the other samples in higher pressures (>10 MPa). Furthermore, comparison with model prediction based on the pore filling model, which assumed that CO2 acts as filling pore spaces of the rocks and minerals, suggested the importance of the sorption mechanism in the CO2 geological storage in addition to the pore-filling mechanism. The present results should be pointed out that the sorption characteristics may have significant and meaningful effect on the assessment of CO2 storage capacity in geological media.

关键词： Sorption Characteristics Rocks Minerals Storing CO2 Processes CO2 Geological Storage

Sorption Characteristics of CO2 on Rocks and Minerals in Storing CO2 Processes

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Water Saturation Dependence on CO2Sorption Potential of Sandstones

Natural Resources 2010年第1期1卷 1-10页

作者： takashi fujii Satomi Nakagawa Yoshiyuki Sato Hiroshi Inomata Toshiyuki Hashida Fracture and Reliability Research Institute Tohoku University Research Center of Supercritical Fluid technology Tohoku University

As CO 2 is injected into pore spaces of water-filled reservoir rocks, it displaces much of the pore fluids. In short terms (several to tens of years), the greater part of the injected CO 2 is predicted to stay as free CO 2 , i.e. in a CO 2 rich dense phase that may contain some water. This paper investigates the sorption characteristics for rocks (quartzose arenite, greywacke, shale, granite and serpentine) and minerals (quartz and albite) in the CO 2 rich dense phase. The measurements were conducted at 50°C and 100°C, and pressures up to 20 MPa. Our results demonstrated that significant quantities of CO 2 were sorbed with all the samples. Particularly, at 50°C and 100°C, quartzose arenite showed largest sorption capacity among the other samples in higher pressures (>10 MPa). Furthermore, comparison with model prediction based on the pore filling model, which assumed that CO 2 acts as filling pore spaces of the rocks and minerals, suggested the importance of the sorption mechanism in the CO 2 geological storage in addition to the pore-filling mechanism. The present results should be pointed out that the sorption characteristics may have significant and meaningful effect on the assessment of CO 2 storage capacity in geological media.

关键词： Sorption Characteristics Rocks Minerals Storing CO 2 Processes CO 2 Geological Storage

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Natural Resources 2012年第2期3卷 48-55页

作者： takashi fujii Kaori Endo Satomi Nakagawa Yoshiyuki Sato Hiroshi Inomata Shinsuke Nakao Toshiyuki Hashida Fracture and Reliability Research Institute Tohoku University Sendai Japan Institute for Geo-Resources and Environment National Institute of Advanced Industrial Science and Technology (AIST) Tsukuba Japan Research Center of Supercritical Fluid Technology Tohoku University Sendai Japan Research Center of Supercritical Fluid Technology Tohoku University Sendai Japan.

For the assessment of the carbon dioxide (CO2) storage potential of water-filled reservoir rocks (i.e., saline aquifers), it should be first important step for a thorough understanding of the effect of water content on CO2/water/rock interactions during CO2 injection. The purpose of this study is to examine the CO2 sorption amount for Kimachi sandstone and Berea sandstone at different water content using the manometric method at temperature of 50?C and pressures of up to 20 MPa. Our results document that a significant quantity of CO2 was sorbed on the two types of sandstone on all water-saturated bases, which corresponded to the amount adsorbed on the air-dry basis. Also, all the wet samples had significantly higher sorption capacity than the theoretical values calculated from the solubility model based on dissolution of CO2 in pore water and the pore-filling model, which assumes that the pore volume unoccupied by water is filled with CO2. Furthermore, the observations indicated a certain degree of correlation between the sorbed amount and the water content, except at pressures below the critical point for Berea sandstone. This investigation points out that CO2 sorption is a possible mechanism in CO2 geological storage even under water-saturated conditions and that the mechanism of sorption on silica and silicate minerals plays an essential role in the reliable and accurate estimation of the CO2 storage capacity of water-saturated reservoirs.

关键词： CO2 Water Saturation Sorption Potential Sandstones

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混凝土微裂缝的力学特性和瞬时检测

陕西水力发电 1987年第2期 62-64页

作者： Hideo Yokomlchi takashi fujii 吴利言

(一)导言如果对混凝土的非弹性性质和断裂特征没有广泛的了解,就不能认清结构混凝土的抗断裂安全问题.混凝土内部结构的变化是决定其基本特性的,因此搞清这一变化是一个有实用意义的课题.这篇论文叙述了在简单压缩、持续压缩和弯曲之下... 详细信息

(一)导言如果对混凝土的非弹性性质和断裂特征没有广泛的了解,就不能认清结构混凝土的抗断裂安全问题.混凝土内部结构的变化是决定其基本特性的,因此搞清这一变化是一个有实用意义的课题.这篇论文叙述了在简单压缩、持续压缩和弯曲之下混凝土的力学特性试验,试验是采用了一种声发射接收仪器,用显微镜直接观察的方法进行的.

关键词：微裂缝力学特性微裂纹混凝土无机非金属材料

金属推块V-带型CVT的研究——Ⅲ部分:金属推块上的作用力

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传动技术 2000年第3期13卷 27-35,5页

作者： Honda R&D Co. Ltd. Shijeru Kanehara Doshisha Univ. Toru fujii takashi Kitaguwa Honda R&D Co. Ltd. Doshisha Univ.

已经用试验实测了稳定工况下推块的压缩力和环的拉力。在以前的工作中已经概要地说明了这种带型的特殊的传动机理。本文采用最近开发设计的推块测量在稳定工况下其他同时作用于推块上的力 ,这些力是推块和环之间的摩擦力 ,推块和带轮间... 详细信息

已经用试验实测了稳定工况下推块的压缩力和环的拉力。在以前的工作中已经概要地说明了这种带型的特殊的传动机理。本文采用最近开发设计的推块测量在稳定工况下其他同时作用于推块上的力 ,这些力是推块和环之间的摩擦力 ,推块和带轮间的法向力 ,推块和带轮之间径向和切向摩擦力。根据新的试验数据来详细叙述金属推块 V-带型 CVT的传动机理。本文着重提出以下结论。( 1 )在所有工况 ,推块和环结合的结合点在带轮上具有一个较大的节径 ,它与速比和传递转矩无关 ,在较小带轮上所有推块转速快于环 ,这决定着环的拉力。( 2 )由于推块挤入从动带轮槽内 ,故产生推块压缩力的一次增加现象。( 3)因作用于推块侧面的法向力变大 ,故推块在大带轮的出口处径向摩擦力变成极大。

关键词：金属推块 V-带无级变速器压缩力拉力

金属推快V-带型CVT的研究部分4:速比变化时金属块上的作用力

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传动技术 2000年第4期14卷 26-32页

作者： Doshisha Univ. takashi Kitagawa and Toru fujii Honda R&D Co. Ltd. Shigeru Kanehara

6个力作用于金属推块 V-带的推块上 ,前文我们采用测量推块和遥测装置成功地测出了稳态下这 6个作用力。本文采用相同的试验和测量装置测出速比变化从低到高或相反的不稳定状态下的 6个作用力。实验结果表示除法向力和环与推块间的摩擦... 详细信息

6个力作用于金属推块 V-带的推块上 ,前文我们采用测量推块和遥测装置成功地测出了稳态下这 6个作用力。本文采用相同的试验和测量装置测出速比变化从低到高或相反的不稳定状态下的 6个作用力。实验结果表示除法向力和环与推块间的摩擦力外其余 4个力的分布形式是与稳态不同的。

关键词：速比金属块压缩力摩擦力 CVT 无级变速传动

Sulfuric Acid Resistance of Concrete with Blast Furnace Slag Fine Aggregate

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Journal of Civil Engineering and Architecture 2014年第11期8卷 1403-1413页

作者： Paweena Jariyathitipong Kazuyoshi Hosotani takashi fujii Toshiki Ayano Research and Development Laboratory Landes Co. Ltd Okayama 719-3192 Japan Technology Center Landes Co. Ltd Okayama 701-1351 Japan Graduate School of Environmental and Life Science Okayama University Okayama 700-8530 Japan

The deterioration of concrete by sulfuric acid attack in sewage environments has become a serious problem for many existing sewage structures. In this study, the properties of concrete using the blast furnace slag have been examined. It was shown that by using the blast furnace slag fine aggregate and blast furnace slag fine powder, it is possible to enhance the resistance of mortar and concrete to sulfuric acid. The resistance to sulfuric acid of mortar and concrete can be improved by using a blast-furnace slag fine aggregate in the total amount of fine aggregate. When mortar or concrete reacts to sulfuric acid, dihydrated gypsum film is formed around the particulate of the fine aggregate. This dihydrated gypsum film could retard the penetration of sulfuric acid, thus, improving the resistance to sulfuric acid. Furthermore, it has been proved that the relationship between the erosion depth by sulfuric acid attack and the product of immersion period and concentration of sulfuric acid can be expressed linearly. However, this relationship is dependent on the type of materials of concrete.

关键词：耐硫酸混凝土细骨料高炉渣高炉矿渣微粉高炉炉渣二水石膏排污结构

经皮冠状动脉内多普勒超声技术对冠状动脉血流储备的研究

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中华超声影像学杂志 1998年第3期7卷 135-137页

作者：张梅松崎益德饭田博藤井崇史山东医科大学附属医院日本山口大学医学部

在１１例正常人和２０例冠状动脉狭窄（≥５０％）患者中，采用冠状动脉内多普勒超声血流钢丝和冠脉内注射罂粟碱测量冠状动脉血流储备（ＣＦＲ）。结果表明，冠状动脉狭窄组平均最大血流速度（ＡＰＶ）和ＣＦＲ均低于正常组测值（Ｐ值... 详细信息

在１１例正常人和２０例冠状动脉狭窄（≥５０％）患者中，采用冠状动脉内多普勒超声血流钢丝和冠脉内注射罂粟碱测量冠状动脉血流储备（ＣＦＲ）。结果表明，冠状动脉狭窄组平均最大血流速度（ＡＰＶ）和ＣＦＲ均低于正常组测值（Ｐ值＜０．００１），冠状动脉内注射罂粟碱安全、可靠。

关键词：冠状动脉狭窄介入性超声描记术 CFR

与日本中部以北松代震群(1965-1967年)相关的地壳中部流体：地球化学反演

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世界地震译丛 2017年第1期48卷 13-31页

作者： Yasuko Okuyama Takahiro Funatsu takashi fujii Naohiko Takamoto Toshiyuki Tosha 仵柯田(译) 孙凤霞(校) 杜建国(校) 朱玉萍(复校) 不详中国地质大学(北京)地球科学与资源学院中国地震局地震预测研究中国地震局地球物理研究所

日本中部长野县北部的松代地区,1965~1967年经历了一场与地面隆起、地下水上涌有关的严重震群。对该震群区域的地表水和地下水地球化学以及同位素地球化学做了调查研究,从盐泉、淡水、浅井和沿松代断层带7口深井(井深最大可达600m)采集... 详细信息

日本中部长野县北部的松代地区,1965~1967年经历了一场与地面隆起、地下水上涌有关的严重震群。对该震群区域的地表水和地下水地球化学以及同位素地球化学做了调查研究,从盐泉、淡水、浅井和沿松代断层带7口深井(井深最大可达600m)采集了水样。该断层带深井水样分析结果表明,水中溶解的Na,K,Al,Cl,Br,B及SiO_4含量与δD,δ^(18) O,δ^(13)C值呈线性增长。氢、氧同位素比率表明井水是地表水和富同位素重水(如"安山岩型水",Giggenbach,1992)的混合物。假定同位素重水中的δD与"安山岩型水"相似,根据井水的分析数据可以恢复深部卤水的地球化学特征。恢复的深部卤水组分富含Na,Ca,Cl以及HCO_3,并且总溶解固体量与海水相近。估计恢复组分的水位于断层带深处(深度>3km)。现有数据显示松代断层带地球化学体系自该震群结束后从未改变,恢复的水组分与触发震群的卤水相似。恢复水的盐度没有来源于海洋板块俯冲脱水的深部卤水的高,深部卤水的Cl含量是海水的两倍。相对于海水,低盐度比是火山区域中部地壳流体的特性之一。

关键词：震群松代地下水地壳流体稳定同位素