An SOFC Cathode Composed of LaNi0.6Fe0.4O3 and Ce(Ln)O2 (Ln=Sm, Gd, Pr)

Reiichi Chiba,Takeshi Komatsu,Himeko Orui,Hiroaki Taguchi,Kazuhiko Nozawa,Hajime Arai 한국세라믹학회 2008 한국세라믹학회지 Vol.45 No.12

We fabricated single cells with a cathode consisting of a LaNi0.6Fe0.4O3-Ce0.8Sm0.2O1.9 composite (LNF-S20DC composite) active layer and an LNF current collecting layer on a 0.89ZrO2-0.10Sc2O3 -0.01Al2O3 electrolyte sheet. The cathode layers were prepared by the screen-printing method. The cathode properties of these cells were measured by the AC impedance method at 800oC. The cathodes with the ceria-LNF composite active layer exhibited high power performance prior to current loading. We investigated the influence of the mixture ratio of LNF and S20DC on the cathodes properties. The Sm in the ceria particles of the composite cathode was substituted with other rare-earth elements. Cathodes with Pr and Gd co-doped ceria in the active layer provided the better performance than those with Sm- or Gd-doped ceria. We fabricated single cells with a cathode consisting of a LaNi0.6Fe0.4O3-Ce0.8Sm0.2O1.9 composite (LNF-S20DC composite) active layer and an LNF current collecting layer on a 0.89ZrO2-0.10Sc2O3 -0.01Al2O3 electrolyte sheet. The cathode layers were prepared by the screen-printing method. The cathode properties of these cells were measured by the AC impedance method at 800oC. The cathodes with the ceria-LNF composite active layer exhibited high power performance prior to current loading. We investigated the influence of the mixture ratio of LNF and S20DC on the cathodes properties. The Sm in the ceria particles of the composite cathode was substituted with other rare-earth elements. Cathodes with Pr and Gd co-doped ceria in the active layer provided the better performance than those with Sm- or Gd-doped ceria.

An SOFC Cathode Composed of LaNi_0.6Fe_0.4O₃ and Ce(Ln)O₂ (Ln=Sm, Gd, Pr)

Chiba, Reiichi,Komatsu, Takeshi,Orui, Himeko,Taguchi, Hiroaki,Nazawa, Kazuhiko,Arai, Hajime The Korean Ceramic Society 2008 한국세라믹학회지 Vol.45 No.12

We fabricated single cells with a cathode consisting of a $LaNi_{0.6}Fe_{0.4}O_3-Ce_{0.8}Sm_{0.2}O_{1.9}$ composite (LNF-S20DC composite) active layer and an LNF current collecting layer on a ${0.89ZrO_2}-{0.10Sc_2}{O_3}-0.01{Al_2}{O_3}$ electrolyte sheet. The cathode layers were prepared by the screen-printing method. The cathode properties of these cells were measured by the AC impedance method at $800^{\circ}C$. The cathodes with the ceria-LNF composite active layer exhibited high power performance prior to current loading. We investigated the influence of the mixture ratio of LNF and S20DC on the cathodes properties. The Sm in the ceria particles of the composite cathode was substituted with other rare-earth elements. Cathodes with Pr and Gd co-doped ceria in the active layer provided the better performance than those with Sm- or Gd-doped ceria.

Effects of Emergence Time and Shading on the Seedling Growth of Sagittaria trifolia L.

Nanako Daimon,Reiichi Miura,Tohru Tominaga 한국잡초학회 2011 한국잡초학회 별책(학술대회 초록집) Vol.31 No.2

Small-scale heterogeneity in the soil environment influences the distribution of lawn grass and weeds

Tanaka, Satoru,Miura, Reiichi,Tominaga, Tohru The Korean Society of Weed Science and The Turfgra 2010 Weed Biology and Management Vol.10 No.4

The association of the micro-scale distribution of six plant species in a lawn, including the lawn grass, Zoysia japonica, with the soil's environmental factors was studied in an urban park in Kyoto, Japan. The cover of each plant species was scored in July and August. The relative elevation, depth of waterlogging after a shower, soil water content, and soil hardness were measured in 144 quadrats in a $12m{\times}12m$ plot. The subsurface soil was sampled at every fourth quadrat and was analyzed for the percentage of fine earth and the levels of total carbon, total nitrogen, and available phosphate. Three correlation criteria, namely the Pearson's, Mantel, and partial Mantel correlations, showed considerable disagreement in indicating whether or not there was a significant correlation between each plant species and environmental variable. Although the reason for the disagreement was not always clear, some unimodal or inverted unimodal responses of a plant species against an environmental factor, which was not detectable by the Pearson's correlation coefficient, were indicated to be significant by the Mantel or partial Mantel tests. There were four plant-environment pairs that had a significant correlation in all three criteria: Juncus tenuis in August had a positive correlation with the soil water content in July and August and a negative correlation with soil hardness and Z. japonica showed a negative correlation with the water content in August. The results suggest that the small patches of lawn with poor drainage are the sites of invasion by J. tenuis.

벼稻熱病의 疫學的 硏究 : Ⅱ. 自然感染病斑의 胞子形成과 離脫

CHANG-KYU KIM,REIICHI YOSHINO,EUN-JONG LEE 한국응용곤충학회 1987 한국응용곤충학회지 Vol.26 No.1

자연상태(自然狀態)에서 발현(發現)된 병반(病斑)을 이용(利用), 도열병균(稻熱病菌)의 포자형성량(胞子形成量)과 이탈량(離脫量)을 년(年)에 조사(調査)하였다. 절취(切取)한 병반(病斑)의 포자형성량(胞子形成量)과 자연상태하(自然狀態下)에서의 포자이탈량(胞子離脫量)은 병반발현후(病斑發現後) 일(日) 사이에 최고치(最高値)에 달(達)했으며 그 수(數)는 각각(各各) 16,200개(個)와 15,900개(個)였다. 자연상태하(自然狀態下)에서의 포자이탈(胞子離脫)은 30일간(日間) 지속(持續)되었다. Sporulation potential and conidia release phase of Pyricularia oryzae on lesions under the natural conditions were measured in 1985 and 1986 leaf blast seasons. The amount of conidia produced in lesions on detached leaves and conidia released under the field condition were reached peak at days after lesion appearance. The maximum numbers of conidia produced and released were 16,200 and 15,900, respectively. Conidia release under the natural conditions lasted for 30 days.

Epidemiological Studies of Rice Blast Disease Caused by Pyricularia oryzae Cavara I. Measurement of the Amount of Spores Released from a Single Lesion

김장규,길야령일,Kim Chang Kyu,Yoshino Reiichi The Korean Society of Plant Pathology 1987 Plant Pathology Journal Vol.3 No.2

자연상태하에서 잎도열병 병반으로부터 포자의 량을 측정하기 위하여 4종의 포자탐집기(금의 원형, 금의 개량형, 길야의 원형, 금$\cdot$길야의 개량형)를 검토한 결과, 원골한 포자형성 및 이탈, 포자채집, 검경에 있어서 한 두가지의 결점이 발견되었다. 따라서 위의 결점을 보완할 수 있는 새로운 포자채집기를 고찰, 성능을 검토하여 상기 4종의 채집기의 결점을 보충할 수 있는 결과를 얻었으므로 금후 자연상태하에서 포자이탈량 조사에 유용할 것으로 생각된다. Four types of spore trap (Kim's original, improved Kim's original, Yoshino's original and mixed type of Kim's and Yoshino's original) were evaluated for their efficacy to "estimate the amount of spores released from leaf blast lesions under the natural conditions. It was found that all four types had one or two defects in allowance for adequate sporulation/release, spore catch or spore counting. Thus, an improved type of spore trap was devised considering that it could cover the defects mentioned above. As a result, newly developed spore trap was quite satisfactory in above mentioned aspects and it could be used for pursuit of spore release phase under the natural conditions.

Effects of Cropping And Short Natural Fallow Rotation on Carbon Balance in the Semiarid Tropics of Africa

Kaori Ando,Hitoshi Shinjo,Hajime Kuramitsu,Reiichi Miura,Shinya Funakawa 한국토양비료학회 2014 한국토양비료학회 학술발표회 초록집 Vol.2014 No.6

Mode of Imaging Study and Endovascular Therapy for a Large Ischemic Core: Insights From the RESCUE-Japan LIMIT

Sakakibara Fumihiro,Uchida Kazutaka,Yoshimura Shinichi,Sakai Nobuyuki,Yamagami Hiroshi,Toyoda Kazunori,Matsumaru Yuji,Matsumoto Yasushi,Kimura Kazumi,Ishikura Reiichi,Inoue Manabu,Ando Kumiko,Yoshida 대한뇌졸중학회 2023 Journal of stroke Vol.25 No.3

Background and Purpose Differences in measurement of the extent of acute ischemic stroke using the Alberta Stroke Program Early Computed Tomographic Score (ASPECTS) by non-contrast computed tomography (CT-ASPECTS stratum) and diffusion-weighted imaging (DWI-ASPECTS stratum) may impact the efficacy of endovascular therapy (EVT) in patients with a large ischemic core. Methods The RESCUE-Japan LIMIT (Recovery by Endovascular Salvage for Cerebral Ultra-acute Embolism Japan–Large IscheMIc core Trial) was a multicenter, open-label, randomized clinical trial that evaluated the efficacy and safety of EVT in patients with ASPECTS of 3–5. CT-ASPECTS was prioritized when both CT-ASPECTS and DWI-ASPECTS were measured. The effects of EVT on the modified Rankin Scale (mRS) score at 90 days were assessed separately for each stratum. Results Among 183 patients, 112 (EVT group, 53; No-EVT group, 59) were in the CT-ASPECTS stratum and 71 (EVT group, 40; No-EVT group, 31) in the DWI-ASPECTS stratum. The common odds ratio (OR) (95% confidence interval) of the EVT group for one scale shift of the mRS score toward 0 was 1.29 (0.65–2.54) compared to the No-EVT group in CT-ASPECTS stratum, and 6.15 (2.46–16.3) in DWI-ASPECTS stratum with significant interaction between treatment assignment and mode of imaging study (<i>P</i>=0.002). There were significant interactions in the improvement of the National Institutes of Health Stroke Scale score at 48 hours (CT-ASPECTS stratum: OR, 1.95; DWIASPECTS stratum: OR, 14.5; interaction <i>P</i>=0.035) and mortality at 90 days (CT-ASPECTS stratum: OR, 2.07; DWI-ASPECTS stratum: OR, 0.23; interaction <i>P</i>=0.008). Conclusion Patients with ASPECTS of 3–5 on MRI benefitted more from EVT than those with ASPECTS of 3–5 on CT.