Hirokazu Nakayama

ORCID: 0000-0001-9758-8004
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About
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Research Areas
  • Chemical Synthesis and Characterization
  • Layered Double Hydroxides Synthesis and Applications
  • Advanced NMR Techniques and Applications
  • Solid-state spectroscopy and crystallography
  • Carbohydrate Chemistry and Synthesis
  • Inorganic Chemistry and Materials
  • Radioactive element chemistry and processing
  • Organophosphorus compounds synthesis
  • Polyoxometalates: Synthesis and Applications
  • MXene and MAX Phase Materials
  • Magnesium Oxide Properties and Applications
  • Covalent Organic Framework Applications
  • Analytical Chemistry and Chromatography
  • Magnetism in coordination complexes
  • Amino Acid Enzymes and Metabolism
  • Chemical Synthesis and Reactions
  • DNA and Nucleic Acid Chemistry
  • NMR spectroscopy and applications
  • Electron Spin Resonance Studies
  • Mesoporous Materials and Catalysis
  • Organic and Molecular Conductors Research
  • Biochemical and Molecular Research
  • Synthesis of Organic Compounds
  • Metal-Organic Frameworks: Synthesis and Applications
  • Supercapacitor Materials and Fabrication

NTT Medical Center
2005-2025

Kobe Pharmaceutical University
2013-2024

Meiji Pharmaceutical University
2020

Aoyama Gakuin University
2012-2014

Osaka City University
2005-2008

Osaka University
1991-2006

Osaka Prefecture University
2006

National Academies of Sciences, Engineering, and Medicine
2003

Tokyo Institute of Technology
1994

Kwansei Gakuin University
1990

Abstract Copper(II) terephthalate absorbs a large amount of gases such as N2, Ar, O2, and Xe. The maximum amounts absorption were 1.8, 1.9, 2.2, 0.9 mole per one the copper(II) salt for Xe, respectively, indicating that not adsorbed on surface but occluded within solid. porous structure terephthalate, in which gas is occluded, deduced from temperature dependence magnetic susceptibilities linear terephthalate.

10.1246/cl.1997.1219 article EN Chemistry Letters 1997-12-01

Abstract The temperature dependence of 35 C1, 81 Br, and 127 I NQR frequencies 1 Hspin-lattice relaxation times (T ) for CH 3 NH PbX (X = Cl, I) was measured through the successive phase transitions in these solids. isotropic reorientation ions takes place higher-temperature phases (tetragonal [I4/mcm] cubic) three salts (E a 11 kJ mol -1 ). T 's lowest-temperature (orthorhombic) indicate that cations undergo correlated C -reorientation chloride 5.45 )and iodide 5.80 , whereas 2.40...

10.1515/zna-1991-0305 article EN cc-by-nc-nd Zeitschrift für Naturforschung A 1991-03-01

Eculizumab given bi-weekly is widely recommended for the treatment of paroxysmal nocturnal hemoglobinuria (PNH). We undertook a retrospective analysis on medical records 763 dosings 14 PNH patients to investigate whether threshold would exist in dosing intervals associated with breakthrough hemolysis. identified 12 events hemolysis 4 patients. Multivariate logistic regression and receiver operating characteristics (ROC) revealed significant association between increased risk prolonged 17...

10.1248/bpb.b15-00703 article EN Biological and Pharmaceutical Bulletin 2016-01-01

In studies of a series crystals layered metal phosphate compounds by magic angle spinning (MAS) NMR spectroscopy, it has been found that there is distinct correlation between the 31 P isotropic chemical shift value and type group. The shifts (H 2 PO 4 ) - , (HPO 2- (PO 3- groups appear around δ -10, -20 -30, respectively. These assignments were made unambiguously measuring MAS spectra with without 1 H high-power decoupling together cross-polarization transfer technique nuclei (CP spectra).

10.1039/a607807i article EN Journal of Materials Chemistry 1997-01-01

Abstract Background Despite numerous studies on safety, acute kidney injury (AKI) caused by vancomycin and/or gentamicin remains a persistent medical issue. However, it unclear whether AUC below 600 mg·h/L in combination with trough level at least 2 µg/mL are reliable indices to reduce the risk of AKI patients treated concomitant and gentamicin. Objective The aim was elucidate pharmacokinetic factors associated development receiving use setting therapeutic drug monitoring (TDM). Methods A...

10.1186/s40780-025-00438-1 article EN cc-by Journal of Pharmaceutical Health Care and Sciences 2025-04-14

10.1007/s10847-013-0290-5 article EN Journal of Inclusion Phenomena and Macrocyclic Chemistry 2013-02-01

Abstract Magnetic properties of oxygen physisorbed in Cu-trans-1,4-cyclohexanedicarboxylic acid having one-dimensional micropores are studied. O2 is well known as a magnetic molecule with S=1. In the case low adsorption, temperature dependence susceptibility shows Schottky-type broad peak and high-field magnetization process has step at around 34T saturation moment 2 μ B/O2. These results interpreted by dimer model S=½ an antiferromagnetic exchange interaction. Broadening increasing...

10.1080/10587259708044542 article EN Molecular crystals and liquid crystals science technology. Section A, Molecular crystals and liquid crystals/Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals 1997-10-01

We investigated the conductivity percolation mechanism of a water-in-oil (W/O) microemulsion composed sodium bis(2-ethylhexyl) sulfosuccinate (AOT), D2O, and decane using impedance spectroscopy pulsed-gradient spin-echo (PGSE) NMR technique. The electrical (σ) measured as function temperature (T) volume fraction (Φ) water droplets show marked increase near room temperature. PGSE measurements that diffusion coefficient (Dwater) is responsible for σ, implying main charge carrier cation species...

10.1021/jp020510a article EN The Journal of Physical Chemistry B 2003-10-18

Abstract The intercalation of methylene blue (MB) into layered phosphates was examined in the presence butylamine (BA) order to clarify mechanism this reaction and function alkylamine, such as BA reaction. MB not directly intercalated phosphates, but could be BA. strongly influenced by amount used; that is, it accelerated BA, inhibited too much Moreover, procedure which previously found can achieved removing from interlayer region when is formed a monolayer phase, depends on orientation...

10.1246/bcsj.70.1053 article EN Bulletin of the Chemical Society of Japan 1997-05-01

Abstract We succeeded in the first direct intercalation of an organic compound into carbonate layered double hydroxide (LDH) by using alcohol as solvent at 50 °C. Furthermore, ion LDH was easily exchanged with chloride or nitrate methanol.

10.1246/cl.2011.276 article EN Chemistry Letters 2011-02-11
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