Hiroki Nagai

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Field

UT-3 Thermochemical Water-Decomposition Cycle Involving Br-Ca-Fe Compounds for Hydrogen Production. Effect of additive graphite and reaction kinetics of Fe-solid-reactants.

KAGAKU KOGAKU RONBUNSHU (1991)

Rusli Amir Tatsuya Sato Hiroki Nagai Kenya Saito Kyoko Yamamoto

水の熱化学分解を行うUT-3サイクル用の鉄系反応固体の調製法を検討し, 反応活性の高いペレットを得た.反応固体ペレットはマグネタイト粉末, シリカ微粒子にセルロース粉末とグラファイトを添加したものを原料として造粒, 焼成を行い調製した.ペレットの細孔容積はグラファイトの添加とともに0.07から0.35ml/gへと直線的に増加し, 20wt%の添加により反応活性は5倍にまで増大した.焼成直後のヘマタイトペレットを一旦臭素化, 加水分解の前処理を行い, マグネタイトにしたペレットを用いたサイクル反応ではペレット中の鉄系化合物の反応に均一反応モデルが適用できた.この前処理を行ったペレットを用いて鉄系化合物の関与する2つの鉄系の要素反応の反応速度式を決定した.

Thermochemical cycle

10.1252/kakoronbunshu.17.1130

Cite

Citations (1)

Relation between Electrical and Optical properties of p-type NiO Films

The Japan Society of Applied Physics (2017)

Mizuki Ono Takeyoshi Onuma Ryosuke Goto Kohei Sasaki Hiroki Nagai

Non-blocking I/O

Source

Cite

Citations (0)

Supplemental Legends from Alectinib Resistance in ALK-Rearranged Lung Cancer by Dual Salvage Signaling in a Clinically Paired Resistance Model

Takahiro Tsuji Hiroaki Ozasa Wataru Aoki Shunsuke Aburaya Tomoko Funazo

<p>Fig. S1. Supplementary data for Fig. 1 Fig. S2. Supplementary drug sensitivity data to ALK inhibitors in KTOR1 and KTOR1-RE. Fig. S3. Supplementary results of the phosphoproteome analysis Fig. S4. Saracatinib sensitized KTOR1-RE cells to crizotinib Fig. S5. Combined knockdown of MET and SRC inhibited proliferation and induces apoptosis Fig. S6. Supplementary data for Fig. 6 Table S1. Primer sequences for direct sequence of ALK exons Table S2. Primer sequences for detection and sequence of EML4-ALK rearrangement Table S3. Primer sequences for qRT-PCR</p>

Primer (cosmetics)

Primer extension

Alectinib

Sequence (biology)

10.1158/1541-7786.22515762

Cite

Citations (0)

Three-dimensional density measurement around a Hayabusa re-entry capsule model in the ballistic range

Experiments in Fluids (2024)

Masato Yamagishi Masanori Ota K. Ohtani Hiroki Nagai

Abstract Three-dimensional density measurement around a Hayabusa re-entry capsule model using the background-oriented schlieren (BOS) technique is carried out in the ballistic range at the Institute of Fluid Science, Tohoku University. A Hayabusa re-entry capsule model with a diameter of 15 mm is used for a projectile, and the Mach number was 1.20. A method of model Position and Pose detection from BOS images was proposed for a capsule model, and unsteady flow field measurement around a free-flight test model was conducted. From the results, we succeeded in measuring the three-dimensional density distribution around a capsule model and visualizing the detailed structure in the wake region.

10.1007/s00348-024-03943-5

Cite

Citations (0)

Embedding of copper into submicrometer trenches in a silicon substrate using the molecular precursor solutions with copper nano-powder

Materials Letters (2016)

Hiroki Nagai Tatsuya Suzuki Takayuki Nakano Mitsunobu Sato

10.1016/j.matlet.2016.06.123

Cite

Citations (6)

Fabrication of Transparent and Conductive SWCNT/SiO2 Composite Thin-Film by Photo-Irradiation of Molecular Precursor Films

Nanomaterials (2021)

N. Ogawa Hiroki Nagai Yukihiro Kudoh Takeyoshi Onuma Taichi Murayama

A single-walled carbon nanotube (SWCNT)-silica composite thin film on a quartz glass was formed by ultraviolet irradiation (20-40 °C) onto a spin-coated precursor film. With 7.4 mass% SWCNTs, the electrical resistivity reached 7.7 × 10-3 Ω·cm after UV-irradiation. The transmittance was >80% at 178-2600 nm, and 79%-73% at 220-352 nm. Heat treatment increased the transparency and pencil hardness, without affecting the low electrical resistivity. Raman spectroscopy and microscopic analyses revealed the excellent film morphology with good SWCNT dispersal. The low refractive index (1.49) and haze value (<1.5%) are invaluable for transparent windows for novel optoelectronic devices.

Ultraviolet

10.3390/nano11123404

Cite

Citations (2)

Dopant concentration dependence of surface roughness and electrical conductivity on CaF 2 -doped In 2 O 3 transparent conductive film

The Japan Society of Applied Physics (2021)

Kaito Oe Shun Mori Kotaro Watanabe Hiroki Nagai Tomohiro Yamaguchi

Source

Cite

Citations (0)

Effect ofShape ontheBiasField ofan Ni-Fe/Ti/Co-Zr-M o

Hiroki Nagai S. Tanoue

The effect ofshape on thebias field ofan Ni-Fe/Ti/Co-Zr-Mo trilayer MR element isdiscussed inrelation totheaimof controlling thebiasfield ofMR heads. Inthe caseofa single-layer Ni-Fefilm, thefield at half-maximum MR coefficient was foundto beproportional tothethickness andthere¬ ciprocal oftheheight. Inthecaseofatrilayer MR element, thesaturation biasfield was proportional totheCo-Zr-Mo thickness. The biasfield was saturated atsmaller sensecur¬ rents, andthesaturation biasfield increased astheTithickness was decreased. Theuseof aCo-Zr-Mo surface oxidation layer instead of a Tilayer inthetrilayer MR element was ef¬ fective, because itwas possible tofabricate theelement asauniform thin film.

Source

Cite

Citations (0)

Energy-storable dye-sensitized solar cell with a polypyrrole electrode

Chemical Communications (2004)

Hiroki Nagai Hiroshi Segawa

A three-electrode-type solar-rechargeable battery, energy-storable dye-sensitized solar cell (ES-DSSC), has been constructed by the hybridization of a typical Gratzel cell and a conducting polymer charge-storage electrode; efficient photo-charging can be accomplished by visible-light irradiation.

Polypyrrole

10.1039/b400439f

Cite

Citations (81)

Supplementary Figure 1B from Characterization of EGFR T790M, L792F, and C797S Mutations as Mechanisms of Acquired Resistance to Afatinib in Lung Cancer

Yoshihisa Kobayashi Koichi Azuma Hiroki Nagai Young Hak Kim Yosuke Togashi

<p>Growth inhibitory curves of Ba/F3 cells expressing EGFR L858R</p>

Afatinib

T790M

10.1158/1535-7163.22504320.v1

Cite

Citations (0)