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Electrocatalytic activity for the four-electron-transfer oxygen reduction reaction ORR was examined with perovskite-type La0. 7Sr0. 5 compounds in concentrated KOH. Moreover, La0. 7Sr0. 3Mn0. 9Ni0. 1 achieved a number less than 4 in the absence of carbon cocatalysts, attributed to lowered reaction rates related to two-electron reduction from oxygen to peroxide. Combined with the results of X-ray photoelectron spectroscopy, the pronounced catalytic activity of La0. 7Sr0. 3Mn0. 9Ni0. The growth of a uniform barrier-type anodic film on aluminum is usually terminated by electric breakdown, which is controlled by the resistance of electrolyte or anion concentration. In this study, highly resistive porous layers have been introduced by anodizing aluminum in sulfuric acid electrolyte followed by boiling water treatment to examine their influence on the electric breakdown potential. The pores of the porous alumina film are sealed by forming hydrated alumina pseudo-boehmite after the boiling water treatment. The breakdown potential increases to over 1500 V for the pore-sealed aluminum specimens on anodizing in sodium tungstate electrolyte. The electrochemical impedance spectroscopy measurements revealed an increased resistance of the porous layer after the pore-sealing treatment. GDOES depth profile analysis disclosed that the sealed porous layer impedes the incorporation of tungsten species into the barrier layer. The introduction of a highly resistive layer that also suppresses the anion incorporation on aluminum is effective in increasing the breakdown potential of anodic films. As a relatively new field of research, only few studies exist describing the growth mechanism of electrodeposition from RTILs, especially for Si films. In the present work, Cyclic Voltammetry CV , Electrochemical Quartz Crystal Microbalance EQCM and potentiostatic electrodeposition techniques have been used to study the role of the applied potential, the concentration of electroactive species, the temperature, and the use of organic additive on the electrodeposition of Si from 1-butyl-1-methylpyrrolidinium bis trifluoromethanesulfonyl imide ionic liquid. The demonstrated investigation of the influence of these parameters on the purity and morphological features gives a better control over the growth of Si thin films and optimizes the technique to grow Si with structural properties suitable for specific applications. So far, Al2O3-like nanopores and TiO2-like nanotubes could be successfully synthesized on many metals and alloys. The proposed models of anodic oxide nanotubes growth, however, sacrifice from lack of evidence of the transition from nanopores to nanotubes. The present study demonstrates a missing piece of this anodizing puzzle, which is responsible for the formation of nanotubes in fluoride-containing organic electrolytes. The compositional fingerprints of this transition shed a light on the general mechanism of nanotubes growth in fluoride-containing electrolytes. KGaA, Weinheim The front cover artwork is provided by the Laboratory of Interfacial Electrochemistry, Hokkaido University Japan. The image illustrates the transition of anodic nanopores into nanotubes during the anodizing process. Read the full text of the Article at 10. 201701103. 8 and 1. 0 nanocrystalline membranes. Nanocrystalline films with a 100 orientation and crystallite sizes of a few tens of nanometers were prepared on porous alumina supports by radio frequency RF reactive sputtering. Combined spectroscopic, permeability, and microbalance analysis suggests that the nanocrystalline matrices were readily hydrogenated by the formation of Hf-H terminal groups on the internal grain surfaces at ambient temperature and thus efficient hydrogen permeation took place due to an enhanced diffusion of hydridic defects through the grain boundaries; this was further aided by the Hf-H bond exchange process. These findings establish a new concept for Pd alternatives based on the pronounced hydric conductivity of transition metal nitride nanomaterials. The negative electrode was formed on TiO2 nanotubes in two step electrochemical synthesis by means of anodizing of titanium and electrodeposition of silicon using ionic liquid electrolytes. Remarkably, it was found that the silicon grows perpendicularly to the z-axis of nanotube and therefore its thickness can be precisely controlled by the charge passed in the electrochemical protocol. Deposited silicon creates a continuous Si network on TiO2 nanotubes without grain boundaries and particle-particle interfaces, defining its electrochemical characteristics under battery testing. The nature of Si shell and presence of titania core determine stable performance as negative electrode tested in half cell of CR2032 coin cell battery. C 2017 Elsevier B. All rights reserved. Here, we report remarkable oxygen evolution reaction OER catalytic activity of brownmillerite BM -type Ca2FeCoO5. The OER activity of this oxide is comparable to or beyond those of the state-of-the-art perovskite PV -catalyst Ba0. 5Sr0. 5Co0. 8Fe0. 2O3-delta BSCF and a precious-metal catalyst RuO2, emphasizing the importance of the characteristic BM structure with multiple coordination environments of transition metal TM species. Hiroki Habazaki at Hokkaido University with their collaborators from Kanagawa University, Kyoto University, and the National Institute of Advanced Industrial Science and Technology. The image shows the oxygen evolution reaction on brownmillerite-type Ca2FeCoO5categorized as an oxygen-deficiency-ordered perovskite in a basic solution. The Communication itself is available at 10. 201700499. Self-organization of TiO2 nanotubes was studied by means of titanium anodizing in electrolytes containing 1, 2 and 3 oxyethylene units in the organic chain of solvent molecule, named mono-, di-, and tri-ethylene glycols. A fundamentally different nanostructures were formed in mono- and di-electrolytes in view of their self-organization; close pack nanotubes are formed in mono-electrolyte, whereas nanotubes with large spaceing in-between are formed in di -electrolyte. The analysis of the tube bottoms and dimples formed in substrate shows formation of conical-type alumina like and frustum-type dimples in mono- and di -electrolytes, respectively. We discuss on the formation of frustum-type dimples with the size corresponding to the space in-between the nanotubes and link their formation to the mechanism of nanostructure growth. C 2016 Published by Elsevier Ltd. The unique morphological features are a consequence of low electric field strength conditions, leading to the growth of tubes on a low population of nucleation sites. The presented work contributes to the research field by the following aspects: i the low field strength conditions have been demonstrated to have an impact on the tube spacing, ii the water content in the electrolyte allows the precise control of the interconnecting space in-between the tubes, iii the tubes separation is controlled by the presence of Ti in-between the tube cells. PEDOT nanostructures with distinct patterns can be formed by means of electrodeposition in titania nanotubes. The approach allows for synthesis of vertically aligned PEDOT-titania composites or polymer nanostructures in the form of PEDOT inverse-nanotube-arrays and PEDOT nanopore-arrays. Anodization of valve metals and alloys is a powerful tool to control nanoscale architecture for many metal oxides. Except for aluminum, the most explored system is self-organized oxide formed on titanium, namely self-organized TiO2nanotubes, because of the unique combination of geometry with the semiconductive nature of titania that is applicable in photocatalysis, light harvesting systems, electrochromic devices, batteries, matrices, templates, filtration membranes, and bio-compatible materials. In this contribution, we review recent advances in the formation of nanostructured oxides in the form of nanotubes, nanopores with a through-hole morphology, mesosponges, nanochannels and microcones grown on Ti, Nb, Ta, Zr, Hf, W, V and their alloys. We discuss mechanisms of their formation, key functional features, and describe their applications in various fields of chemistry and electrochemistry. In and out of tube: Robust poly-3,4-ethylene-dioxythiophene nanostructures in the form of nanopore arrays and inverse nanotube arrays are obtained by site-selective deposition into TiO2 nanotubes. KGaA, Weinheim. The effect of tungsten species on the incorporation and migration of phosphorus species within anodic alumina is investigated. The study employs barrier anodic films, formed on a sputtering-deposited Al-15at. The films consist of either an outer tungsten-containing region and an inner tungsten-free region, or a tungsten-containing region only. Phosphorus species are shown to migrate inward in the tungsten-containing alumina more slowly than in the tungsten-free alumina. In contrast, the outward migration of tungsten species is relatively unaffected by the presence of phosphorus species. The relevance of the results to the use of tungsten tracers for the study of porous film growth is discussed. Conducting polymer nanowires and nanopore arrays were formed by site selective filling of titania nanotubes with polypyrrole by electropolymerization using a surfactant electrolyte of dodecyl sulfate. The polymerization process can be controlled by modifications of the geometry and chemistry of a nanotubular titania framework in which the polymer is deposited to form either nanowires or nanopore arrays. The size of the polymer can be adjusted to ca. 13 nm and thus lies below the typical value of exciton-diffusion-length in organic photovoltaic systems. Aspect ratios of 200 with a length of 3000 nm can be reached for well-organized and mechanically stable polymer nanopore arrays. The preferential deposition of the polymer is discussed in view of the wetting behaviour of titania nanotubes. The present work demonstrates a new approach to self-healing polymers that have the ability to repair artificial defects and restore the passive state of an underlying metal substrate. An intrinsically conducting polymer ICP with a well designed function of doped ions possesses specific permselective properties, restricting incorporation of aggressive chlorides from corrosive electrolyte. The cation permselective membrane controls the release of healing ions to the defect zone when artificial defects are formed, efficiently inhibiting corrosion of the underlying metal substrate. A new concept for formation of nanostructured intrinsically conducting polymers ICP is demonstrated. Polypyrrole can be electropolymerized from an ionic-surfactant-solution in TiO2 nanotube framework to form a geometrical structure of self-organized nanopore arrays. Polymerization is initialized selectively in the space between nanotube walls forming a mechanically stable polymer network with controlled wall thickness from 40 to 10 nm. Such robust polymer nanostructures are very promising for application in electrochemical systems of limited charge carrier diffusion length. The practical area-specific resistivity of 0. KGaA. Amorphous Nb2O5film of 167 nm thickness was fabricated by anodic oxidation of sputter deposited niobium and characterized by TEM, GD-OES and AFM. The amorphous Nb2O5showed the character of n-type semiconductor. The conductivity of the film, following the Arrhenius behaviour, was independent of the oxygen partial pressure, but was largely dependent on hydrogen partial pressure. The conductivity of the Nb2O5film at room temperature in dry hydrogen was 2. 2 orders of magnitude as high as that in air. The addition of water vapor to hydrogen atmosphere reduced conductivity probably due to suppressing the reduction of Nb2O5. A bi-layered PPy film consisting of an inner layer doped with Keggin-structure anions of PMo12O403- and HPO42- PPy-PMo12 and an outer layer doped with organic anions of dodecyl sulfate PPy-DoS exhibited a self-healing property when coated on steel. When a defect was introduced into the PPy-coated steel immersed in 3. After a few hours, the potential was recovered to the passive region, and the passivation continued for another 20 hours. Without any damage, the release of PMo12 doped in the inner layer was inhibited by the outer PPy layer doped with DoS. When a defect was introduced into the PPy film, the inner PPy layer released phosphate and molybdate anions to the damaged zone due to their decomposition via hydrolysis. Both anions work as passivation inhibitors and helped to repassivate the damaged zone on the steel. Ultrasonic irradiation was imposed during electropolymerization of polypyrrole PPy in acid phosphate solution containing molyb-dophosphate PMo12O403- ions and pyrrole monomer. Corrosion of the steel coated by the PPy film prepared under ultrasonic irradiation was tested in 3. 5 wt. The PPy film prepared under ultrasonic irradiation kept the steel in the passive state one and a half times as long as that prepared without ultrasonic irradiation. Imposition of ultrasound enhanced the doping of PMo12O403-. and decreased the doping of HPO42-. The surface morphology of the PPy film was changed with imposition of ultrasound in electropolymerization process. Under imposition of ultrasound, a dense and compact PPy layer was formed. The structure of the PPy film obtained under ultrasonic irradiation was assumed to result from change in nucleation-growth mechanism. c 2007 Elsevier Ltd. All rights reserved. The bi-layered polypyrrole PPy coatings were investigated for corrosion prevention of a carbon F steel. The inner layer was doped with the Keggin structure anions Of PMO12O403- PMO12 and HpO 4 2- anions for stabilization of the passive oxide film at the metal-polymer interface, and the outer layer was doped with four organic anions of dihydroxynaphthalenedisulfonate DHNDS , naphthalenedisulfonate NDS , anthraquinonedisulfonate AnqDS or dodecylsulfate DoS for inhibition of the decomposition and release of PMo12. The corrosion tests were performed in 3. 5 wt. The performance of corrosion protection related to the oxidized state of the polymer was discussed. c 2007 Elsevier Ltd. All rights reserved. Bi-layered polypyrrole PPy coating was investigated for corrosion prevention of steels. The PPy coating consisted of the inner layer doped with PMo12 40 PMo12 and HPO42- ions and the outer layer doped with naphthalenedisulfonate NDS ions. PMo12 ions doped in the inner layer make the passive oxide film on steel stabilized and the outer layer doped with large organic ions of NDS restricts decomposition and release of PMo12 ions in the inner layer. Corrosion tests were made in 3. The single PPy-PMo12 and PPy-NDS coatings maintained the steel in passive state for 34h and 24h, respectively. The bi-layered coating kept the steel in passive state and prevented corrosion of the steels for the longer time period. c 2006 Elsevier Ltd. All rights reserved.

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アルスの研究者

9~12月高単価収益4割アップ 青森県産業技術センターは、アルストロメリアに赤色発光ダイオード(LED)を電照すると、採花本数が最大で8割程度増えることを確認した。 草勢の維持、向上で高単価が期待できる9~12月の採花本数が増える。 2年目以降は電照時期以外の収量増も見込め、所得向上が期待できることが分かった。 試験では畝上2メートルに、菊向けに市販するLEDを2メートル間隔で設置。 8~12月の自然日長が14時間以下の朝夕に電照し、14時間の日長を確保した。 一般的な品種「トルマリン」では1株当たりの採花本数が105本と、電照無処理の対象区より8割増加するなど、品種によって2~8割程度採花本数が増えた。 LED電照で草勢が向上し、収穫量が減少しがちな9~12月でも多くの品種で対象区を上回った。 2年目以降は電照を行わない5~8月の期間も採花本数が増え、草勢が衰える3年目ではより効果が大きくなった。 L規格以上の割合も若干増加した。 センターの試算では、電球1灯当たりの電気料金が年間140円で、132平方メートル(40坪)のハウス当たりでは約5000円だった。 同規模のハウスで定植から3年間栽培した場合、収益は電照区で約94万円と無処理区より4割増えた。 菊の栽培では赤色LEDの活用例が増えているが、アルストロメリアでの取り組みは珍しい。 他の作型や暖地でも応用できるため、同センターの加藤直幹研究管理員は「生産者の所得向上に向け、導入を進めていきたい」と話す。

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アルスの研究者

金山 弘昌. 「ガリレオと建築--17世紀フィレンツェ建築における「新科学」の影響」. 『慶應義塾大学日吉紀要 人文科学』. 2015. 1-38• イヴォンヌ・リーヴィ著, 一條和彦, 金山弘昌訳. ハインリヒ・ヴェルフリン『美術史の基礎概念』の一九一五年から二〇一五年のグローバルな受容における諸問題 ヴェルフリン『美術史の基礎概念』出版一〇〇年記念. 芸術学. 2015. 23-32• 金山 弘昌. 「妻木頼黄と日本橋の意匠」. 『慶應義塾大学日吉紀要 人文科学』. 2012. 65-94• 金山 弘昌. 「関東大震災 1923 と日本橋の近代建築」. 『日本橋学研究』. 2012. 5-22• 金山 弘昌. ガリレオと美術--近代天文学の祖における科学と美術の関係. 『芸術学』. 2012. 3-25 MISC 1件 :• 憧憬のアルストピア : パラッツォ・デル・テ「クピドとプシュケの間」からボマルツォ「聖なる森」へ ありな書房 2020 ISBN:9784756620699• クリスタルの心--ルネサンスにおける愛の談論、詩、そして肖像画 ありな書房 2017• 『魔術の生成学-ピエロ・ディ・コジモからパラッツォ・ピッティへ』 ありな書房 2016 講演・口頭発表等 6件 :• ジャック・カロが描くコンメディア・デッラルテ:版画家のレトリック 2008年度 日本演劇学会 全国大会 シンポジウム 2008• 調度としての絵画 -17世紀ピッティ宮における絵画・タペストリーの展示- 平成20年度第1回美学会東部会例会 2008• 古代ローマの都の光輝」:17世紀ローマにおける古代建築復元図とそのバロック建築への影響 建築史学会2008年度大会 2008• 16世紀フィレンツェにおける粗面仕上げ切石積みの解釈 美学会 第51回全国大会 2000• パオロ・ファルコニエーリと1681年のピッティ宮改修計画案 第51回美術史学会全国大会研究発表 1998 Works 8件 :.

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