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Effects of Nitrogen Forms on Carbon and Nitrogen Accumulation in Tomato Seedling

Agricultural Sciences in China 2008年第11期7卷 1308-1317页

作者： GE Ti-da SONG Shi-wei CHI Ming-han HUANG Dan-feng k iwasaki key Laboratory of Subtropical Agriculture Ecology Institute of Subtropical Agriculture Chinese Academy of Sciences Changsha 410125 P.R. China Ehime University United Graduate School of Agricultural Sciences Matsuyama 790-8566 Japan School of Agriculture and Biology Shanghai Jiao Tong University Shanghai 201101 P.R. China Faculty of Agriculture Kochi University Kochi 783-8502 Japan

Utilization of organic nitrogen （N） is an important aspect of plant N assimilation and has potential application in sustainable agriculture. The aim of this study was to investigate the plant growth, C and N accumulation in leaves and roots of tomato seedlings in response to inorganic （NH4^＋-N, NO3^-N） and organic nitrogen （Gly-N）. Different forms of nitrogen （NH4^＋-N, NO3^--N, Gly-N） were supplied to two tomato cultivars （Shenfen 918 and Huying 932） using a hydroponics system. The plant dry biomass, chlorophyll content, root activity, total carbon and nitrogen content in roots and leaves, and total N absorption, etc. were assayed during the cultivation. Our results showed that no significant differences in plant height, dry biomass, and total N content were found within the first 16 d among three treatments; however, significant differences in treatments on 24 d and 32 d were observed, and the order was NO3^--N 〉 Gly-N 〉 NH4^＋-N. Significant differences were also observed between the two tomato cultivars. Chlorophyll contents in the two cultivars were significantly increased by the Gly-N treatment, and root activity showed a significant decrease in NHa^＋-N treatment. Tomato leaf total carbon content was slightly affected by different N forms; however, total carbon in root and total nitrogen in root and leaf were promoted significantly by inorganic and organic N. Among the applied N forms, the increasing effects of the NH4^＋-N treatment were larger than that of the Gly-N. In a word, different N resources resulted in different physiological effects in tomatoes. Organic nitrogen （e.g., Gly-N） can be a proper resource of plant N nutrition. Tomatoes of different genotypes had different responses under organic nitrogen （e.g., Gly-N） supplies.

关键词： tomato (Solanum lycopersicum) inorganic nitrogen organic nitrogen C and N accumulation growth

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ICP/AES法测定地质样品中的稀土元素——草酸盐沉淀和离子交换分离

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国外铀金地质 1991年第1期7卷 88-92页

作者： k.iwasaki H.Haraguchi 刘然

本文叙述了一种分离测定地质样品中14个稀土元素(REEs)的方法,它是相继以钙作载体草酸盐沉淀稀土和硝酸体系离子交换分离之后,用等离子体发射光谱测定。当仅用离子交换分离时,特别是富铁、钙样品,发现Sm、Eu、Gd的回收率低,两种分离技... 详细信息

本文叙述了一种分离测定地质样品中14个稀土元素(REEs)的方法,它是相继以钙作载体草酸盐沉淀稀土和硝酸体系离子交换分离之后,用等离子体发射光谱测定。当仅用离子交换分离时,特别是富铁、钙样品,发现Sm、Eu、Gd的回收率低,两种分离技术和结合可以使这种情况得到改善。此法已用于分析地质标准物质,NBS SRM693(玄武岩)、NBS SRM278(黑曜岩)、GSJ JB-1(玄武岩)、GS JA-2(安山岩)和CCRMP SY-3(正长岩)。在球粒陨石归一化稀土元素分布模式的基础上评价了本方法的分析结果。

关键词：地质样品稀土元素测定 ICP AES

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In Vitro Hydrodynamic Test and In Vitro Hemolysis Test for Development of Inexpensive Spiral Vortex Ventricular Assisting System Using IABP Console

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上海大学学报（自然科学版） 2004年第B10期10卷 32-36页

作者： Y.Ohnishi k.iwasaki H.Mizuta T.Sudo S.Muto T.Shima T.Tanaka k.Ito M.Umezu IntegrativeBioscienceandBiomedicalEngineeringGraduateSchoolofWasedaUniversity TokyoJapan YasuhisaBiomechanicsInc. TokyoJapan

The purpose of this research is to develop an inexpensive pulsatile blood pump system for short-term use, as a combination of the usage of IABP console and spiral vortex pump. In vitro hydrodynamic test and in vitro h... 详细信息

关键词：水力测试血泵系统螺旋涡流泵溶血测试

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Biomedical Engineering Approach to Evaluate Anastomosis Methods for Coronary Artery Bypass Grafting

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上海大学学报（自然科学版） 2004年第B10期10卷 25-28页

作者： M.Umezu J.kawai J.Suehiro M.Arita Y.Shiraishi k.iwasaki T.Tanaka H.Niinami IntegrativeBioscienceandBiomedicalEngineeringGraduateSchoolofWasedaUniversity TokyoJapan Dept.ofCardiovascularSurgery JuntendoMedicalUniversityTokyoJapan YasuhisaBiomechanics Inc.TokyoJapan

There are two different methods for coronary artery bypass grafting: end-to-side and side-to-side anastomosis. In vitro mock test, flow visualization and animal experiments were performed in parallel to compare the hemodynamic effect between two methods. Thus, bioengineers can provide practical useful information to the clinical team.

关键词：生物医学工程接合方法冠状动脉分流嫁接法面对面接合冠心病

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In Vitro Mitral Simulator to Evaluate Effectiveness of Valvoplasty Technique

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上海大学学报（自然科学版） 2004年第B10期10卷 29-31页

作者： H.Doi M.Arita M.Okuda R.Noda k.iwasaki T.Tanaka H.kasegawa M.Umezu IntegrativeBioscienceandBiomedicalEngineering GraduateSchoolofWasedaUniversityTokyoJapan YasuhisaBiomechanics TokyoJapan HanzomonCardiovascularClinic TokyoJapan

The edge-to-edge technique is one of the surgical procedures for anterior mitral leaflet prolapse. The purpose of this study is to evaluate the effect of this technique by using an in vitro mitral simulator. The resul... 详细信息

关键词：二尖瓣模拟外科技术吻合技术计算机模拟

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中药半夏厚朴汤对帕金森病吞咽反射的作用

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国外医药（植物药分册） 2001年第6期16卷 271-271页

作者： iwasaki k

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怀孕末期肉牛的能量需要

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中国畜牧兽医 1984年第4期 46-46页

作者： k.iwasaki 冀一伦

为了估测肉牛怀孕期的能量需要,利用日本黑牛作了一系列的试验。试验从头胎产前开始,延续到第四产。每一试验用六头牛。怀孕青年牛或母牛分为三组,喂以三个水平的试验饲粮,即,(1)生长或维持,(2)生长(或维持)+怀孕,(3)生长(或维持)+2×... 详细信息

为了估测肉牛怀孕期的能量需要,利用日本黑牛作了一系列的试验。试验从头胎产前开始,延续到第四产。每一试验用六头牛。怀孕青年牛或母牛分为三组,喂以三个水平的试验饲粮,即,(1)生长或维持,(2)生长(或维持)+怀孕,(3)生长(或维持)+2×怀孕需要量(日本饲养标准1975)。利用能量代谢试验所得资料,以因子与复回归公式法作了估计。由此得出用于胎儿生长的代谢能利用效率为14.9％,母牛在怀孕期维持能量需

关键词：代谢能胎儿怀孕期生物能肉牛母牛

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Preparation and Surface Layer Modification of Silicon Nanoparticles Dispersed in 2-Propanol

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Chinese Physics Letters 1998年第12期15卷 928-930页

作者： ZHU Yong S.iwasaki k.kimura ZHANG Li-de Institute of Solid State Physics Chinese Academy of SciencesHefei 230031 Department of Material Science Himeji Institute of TechnologyScience Garden CityKamigohriHyogo 678-12Japan

Silicon nanoparticles dispersed in 2-propanol were prepared by using an arc plasma with gas flow method in a new designed home-made *** particles are composed of silicon crystal core covered by oxidized amorphous silicon *** composition of the particle surface layer can be modified by preparing the sample in different *** particles can be also obtained with different core composition and different size which we need.

关键词： preparing apparatus amorphous

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A New Pregnane Glycoside from Dioscorea collettii var. hypoglauca

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Chinese Chemical Letters 1998年第8期9卷 739-742页

作者： Hu, k Dong, AJ kobayashi, H iwasaki, S Yao, XS Shenyang Pharmaceut Univ Dept Nat Prod Chem Shenyang 110015 Peoples R China NE Pharmaceut Co Inst Drug Res & Dev Shenyang 110026 Peoples R China Univ Tokyo Inst Mol & Cellular Biosci Tokyo 113 Japan

A new pregnane glycoside hypoglaucin G was isolated from Dioscorea collettii var. hypoglauca by bioactivity-guided fractionation, which showed a moderate activity of inducing morphological deformation of the Pyricularia oryzae mycelia. The structure of hypoglaucin G was established as 16 beta-(4'-methyl-5'-O-beta-D-glucopyranosyl-pentanoyloxy)-pregn-5-en-3 beta-ol-20-one 3-O-alpha-L-rhamnopyranosyl-(1-->2)-[alpha-L-rhamnopyranosyl-(1-->4)-]-beta-D-glucopyranoside by chemical evidence and spectral analysis, especially by 2D-NMR techniques.

关键词： hypoglaucin G Dioscorea collettii var. hypoglauca Pyricularia oryzae

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Quality assessment of volunteered geographic information for outdoor activities:an analysis of OpenStreetMap data for names of peaks in Japan

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Geo-Spatial Information Science 2023年第3期26卷 333-345页

作者： Jun Yamashita Toshikazu Seto Nobusuke iwasaki Yuichiro Nishimura Faculty of Social and Cultural Studies Kyushu UniversityFukuokaJapan Faculty of Letters Komazawa UniversityTokyoJapan Sciences NAROInstitute for Agro-EnvironmentalTsukubaJapan Faculty of Letters Nara Women’s UniversityNaraJapan

Geographical studies of outdoor activities have increased in recent years with the rise in popularity of these activities worldwide,including in *** geographic information(VGI)is a key tool for organizing outdoor activities as it offers a means to determine the locational information and names of *** evaluate the quality of VGI,geospatial data generated by land survey agencies and other VGI are often utilized as reference ***,since these reference data may not be available,other methods are necessary to assure the quality of *** this study,we examined five trust indicators based on the inherent characteristics of VGI through an empirical case *** used mountain names extracted from OpenStreetMap in Japan as data because there were almost no other VGI in the *** a result,we isolated three trust indicators,namely versions,users,and tag corrections,to examine the thematic accuracy of VGI because these were the only statistically significant ***,we found that the prediction rate of thematic accuracy was very *** improve thematic accuracy,this study recommends using the most accurate versions,applying correctly given tags,and considering the motivations and characteristics of the VGI contributors.

关键词： Outdoor activities volunteered geographic information(VGI) OpenStreetMap(OSM) data quality assessment trust integrated usage

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