Tetsuya Ishikawa
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View article: Anomalous bending and transmission at the Bragg condition by crystal stacking fault
Anomalous bending and transmission at the Bragg condition by crystal stacking fault Open
We observed an anomalous bending and transmission at the Bragg condition by crystal stacking fault. Two macroscopic and sharp deflections were observed in the proximity of the interface of stacking faults inside a diamond crystal due to th…
View article: Hybridized and Localized 4f Electronic States of Nd-based Intermetallic Compounds in Cubic Symmetry Probed by High-Energy Photoemission
Hybridized and Localized 4f Electronic States of Nd-based Intermetallic Compounds in Cubic Symmetry Probed by High-Energy Photoemission Open
We have performed soft and hard X-ray photoemission spectroscopies on NdTi2Al20 and NdBe13 which show antiferromagnetic ordering at low temperatures. The Nd 3d core-level photoemission and Nd 3d-4f valence-band resonant photoemission spect…
View article: Paradigm Shift in Infrastructure Inspection Technology: Leveraging High-performance Imaging and Advanced AI Analytics to Inspect Road Infrastructure
Paradigm Shift in Infrastructure Inspection Technology: Leveraging High-performance Imaging and Advanced AI Analytics to Inspect Road Infrastructure Open
Effective road infrastructure management is crucial for modern society. Traditional manual inspection techniques remain constrained by cost, efficiency, and scalability, while camera and laser imaging methods fail to capture subsurface def…
View article: High Yielding Ability of Rice Cultivar ‘Niji-no-kirameki’ under Hot Summer Condition in Southern Part of Ibaraki Prefecture
High Yielding Ability of Rice Cultivar ‘Niji-no-kirameki’ under Hot Summer Condition in Southern Part of Ibaraki Prefecture Open
View article: Mechanistic study on moisture exposure of Ti-based layered oxides for sodium storage applications
Mechanistic study on moisture exposure of Ti-based layered oxides for sodium storage applications Open
The air stability and moisture sensitivity of titanium-based layered negative electrode materials for sodium storage play a critical role in their practical applications for advanced energy storage systems.
View article: Dynamically patterning x-ray beam by a femtosecond optical laser
Dynamically patterning x-ray beam by a femtosecond optical laser Open
Modern science and technology have greatly benefitted from our ability to precisely manipulate light waves, in both their spatial and temporal degrees of freedom. In the x-ray region, however, spatial control has been virtually static main…
View article: Green upgrading of SPring-8 to produce stable, ultrabrilliant hard X-ray beams
Green upgrading of SPring-8 to produce stable, ultrabrilliant hard X-ray beams Open
SPring-8-II is a major upgrade project of SPring-8 that was inaugurated in October 1997 as a third-generation synchrotron radiation light source. This upgrade project aims to achieve three goals simultaneously: achievement of excellent lig…
View article: Dataset for: Dynamically patterning X-ray beam by a femtosecond optical laser
Dataset for: Dynamically patterning X-ray beam by a femtosecond optical laser Open
This record contains the image and plot data for the paper "Dynamically patterning X-ray beam by a femtosecond optical laser".
View article: Measurement of Vegetation Indices Using a Portable Spectrometer and Their Utilization for Diagnosis of Nitrogen Topdressing of Rice
Measurement of Vegetation Indices Using a Portable Spectrometer and Their Utilization for Diagnosis of Nitrogen Topdressing of Rice Open
View article: Revolution in Crystallography due to the Evolution of Synchrotron Radiation
Revolution in Crystallography due to the Evolution of Synchrotron Radiation Open
X-ray crystallography has significantly changed with the advancement of X-ray light sources, particularly since synchrotron radiation X-ray sources emerged in the 1970s. Over the years, the author has been proud to contribute indirectly to…
View article: Fingerprints of Mott and Slater gaps in the core-level photoemission spectra of antiferromagnetic iridates
Fingerprints of Mott and Slater gaps in the core-level photoemission spectra of antiferromagnetic iridates Open
We present Ir $4f$ core-level hard-x-ray photoemission spectroscopy (HAXPES) experiments conducted across antiferromagnetic (AFM) ordering transition in Ruddlesden-Popper iridates Sr$_2$IrO$_4$ and Sr$_3$Ir$_2$O$_7$. The Ir $4f$ spectra ex…
View article: Achieving Both Yield Increase and Farm Area Expansion in Large-scale Paddy Farming by Accumulating and Utilizing Agricultural Data and Smart Agricultural Machinery
Achieving Both Yield Increase and Farm Area Expansion in Large-scale Paddy Farming by Accumulating and Utilizing Agricultural Data and Smart Agricultural Machinery Open
本研究は,大規模水田作経営における営農データやスマート農機の活用による規模拡大への対応と増収の両立条件の解明を課題とする.茨城県の大規模水田作経営2法人における2020年から2022年の取り組みを,データ駆動型生産体系の構築,10 a当たり全刈り収量の変化,米生産費,自動運転田植機の運用について検討する.2法人は3年間で40 ha以上規模拡大しており,スマート農機の積極的導入や新規雇用の増加等の費用が増加しても,経営全体での10 a当たり生産費は削減された.ただし,急激な規…
View article: Dataset for: Dynamically patterning X-ray beam by femtosecond optical laser
Dataset for: Dynamically patterning X-ray beam by femtosecond optical laser Open
This record contains the image and plot data for the paper "Dynamically patterning X-ray beam by femtosecond optical laser".
View article: Efficient Surface Passivation of Ti-Based Layered Materials by a Nonfluorine Branched Copolymer for Durable and High-Power Sodium-Ion Batteries
Efficient Surface Passivation of Ti-Based Layered Materials by a Nonfluorine Branched Copolymer for Durable and High-Power Sodium-Ion Batteries Open
There is a crucial need for low-cost energy storage technology based on abundant sodium ions to realize sustainable development with renewable energy resources. Poly(vinylidene fluoride) (PVDF) is applied as a binder in sodium-ion batterie…
View article: Improvement of Cultivar Composition in Data-driven Large-scale Rice Cultivation with Field-specific Datasets
Improvement of Cultivar Composition in Data-driven Large-scale Rice Cultivation with Field-specific Datasets Open
茨城県南部で大規模稲作を展開する農業生産法人 (以下,経営体と略記) において,2019年から2022年までの栽培管理情報を網羅的に収集し,収量の向上を目的とした作付品種構成の最適化について検討した.この経営体では,4年間で急速に圃場の集積を進め,業務委託部分を除いた作付面積は,2019年の41.8 haから,2022年には95.9 haまで拡大し,2019年と比較して移植作業日数は17日,収穫作業日数は16日,それぞれ多くなった.4年間継続して作付した基幹品種である「ヒメ…
View article: Structural Phase Transitions in Ni/Ag/Ti and Ni/Cu/Ti Tri-Layered Thin Films
Structural Phase Transitions in Ni/Ag/Ti and Ni/Cu/Ti Tri-Layered Thin Films Open
View article: Depth analysis of local conformation in poly(methyl methacrylate) adsorbed onto SiOx studied by soft X-ray absorption spectroscopy combined with an Ar gas cluster ion beam
Depth analysis of local conformation in poly(methyl methacrylate) adsorbed onto SiOx studied by soft X-ray absorption spectroscopy combined with an Ar gas cluster ion beam Open
Using X-ray absorption spectroscopy (XAS) with linearly polarized soft X-rays, we investigated the local conformation of poly(methyl methacrylate) (PMMA) adsorbed to a SiO x /Si(111) surface. The preedge intensity of the O K-edge XAS for P…
View article: Author Correction: Structural resolution of a small organic molecule by serial X-ray free-electron laser and electron crystallography
Author Correction: Structural resolution of a small organic molecule by serial X-ray free-electron laser and electron crystallography Open
View article: Impact of the ground-state $4f$ symmetry for anisotropic $cf$-hybridization in the heavy fermion superconductor CeNi$_{2}$Ge$_{2}$
Impact of the ground-state $4f$ symmetry for anisotropic $cf$-hybridization in the heavy fermion superconductor CeNi$_{2}$Ge$_{2}$ Open
We report the ground-state symmetry of the Ce $4f$ states in the heavy fermion superconductor CeNi$_{2}$Ge$_{2}$, yielding anisotropic $cf$-hybridization between the Ce $4f$ states and conducting electrons. By analyzing linear dichroism in…
View article: Propagation-based phase-contrast imaging method for full-field X-ray microscopy using advanced Kirkpatrick–Baez mirrors
Propagation-based phase-contrast imaging method for full-field X-ray microscopy using advanced Kirkpatrick–Baez mirrors Open
We demonstrate a propagation-based phase-contrast imaging method for full-field X-ray microscopy based on advanced Kirkpatrick–Baez (AKB) mirrors to achieve high-contrast observations of weak phase objects and correct field curvature aberr…
View article: Improvement in Cultivation Practice of Cultivar 'Akidawara' in Data-driven Large-scale Rice Cultivation with Field-specific Datasets
Improvement in Cultivation Practice of Cultivar 'Akidawara' in Data-driven Large-scale Rice Cultivation with Field-specific Datasets Open
茨城県南部で大規模稲作を展開する農業生産法人 (以下,経営体と略記) において,2019年から2021年まで栽培管理情報を網羅的に収集し,圃場立地・移植日・窒素施肥法などが多収品種「あきだわら」の乾燥ロット別実収や圃場別収量スコアに及ぼす影響を検討した.この経営体では,2年間で作付面積が急速に拡大し106.0 haに到達した.圃場の集積が進む4つのエリアを「面的集積エリア」と定義すると,その圃場面積が全作付面積に占める比率は,2019年の43.2%から2021年には89.8…
View article: X-ray two-beam topography for quantitative derivation of phase shift by crystalline dislocations
X-ray two-beam topography for quantitative derivation of phase shift by crystalline dislocations Open
Quantitative evaluation of crystalline dislocations is gaining importance in order to realize functional materials with ultimate performance. X-ray topography has been an important tool to evaluate the crystalline dislocations in bulk in a…
View article: Structural resolution of a small organic molecule by serial X-ray free-electron laser and electron crystallography
Structural resolution of a small organic molecule by serial X-ray free-electron laser and electron crystallography Open
View article: CCDC 2180417: Experimental Crystal Structure Determination
CCDC 2180417: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 2119567: Experimental Crystal Structure Determination
CCDC 2119567: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 2180416: Experimental Crystal Structure Determination
CCDC 2180416: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: Deep 3D reconstruction of synchrotron X-ray computed tomography for intact lungs
Deep 3D reconstruction of synchrotron X-ray computed tomography for intact lungs Open
View article: <i>Thermus thermophilus</i> polyploid cells directly imaged by X-ray laser diffraction
<i>Thermus thermophilus</i> polyploid cells directly imaged by X-ray laser diffraction Open
Thermus thermophilus is reportedly polyploid and carries four to five identical genome copies per cell, based on molecular biological experiments. To directly detect polyploidy in this bacterium, we performed live cell imaging by X-ray fre…
View article: EXPERIMENTAL STUDY ON COMPRESSIVE FATIGUE CHARACTERISTICS OF CONCRETE FLOATING SUPPORT FOR OFFSHORE WIND PLATFORM BY USING SCALE-DOWN PARTIAL SPECIMENS
EXPERIMENTAL STUDY ON COMPRESSIVE FATIGUE CHARACTERISTICS OF CONCRETE FLOATING SUPPORT FOR OFFSHORE WIND PLATFORM BY USING SCALE-DOWN PARTIAL SPECIMENS Open
洋上風力発電設備コンクリート浮体の疲労特性を解明するため,本研究では縮小部分模型供試体を製作し,供用環境を想定した各種条件(水の有無,応力強度比など)にて常時圧縮応力下での疲労載荷実験を行った.結果,コンクリート内に湿潤する水の影響により水中では気中と比べ疲労寿命が2オーダー低下することなどが示された.また最大振幅の応力強度比が大きい場合,接合部近傍では部材中央部と比べて疲労寿命が低下する傾向にあった.具体的には最大振幅が応力強度比70%の場合,接合部近傍が中央部と比べ疲労…
View article: SYNAPSE: An international roadmap to large brain imaging
SYNAPSE: An international roadmap to large brain imaging Open