Masami Yamada

ORCID: 0000-0002-5107-8903
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About
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Research Areas
  • Nuclear physics research studies
  • Microtubule and mitosis dynamics
  • Radioactive Decay and Measurement Techniques
  • Nuclear Physics and Applications
  • Neutrino Physics Research
  • Quantum, superfluid, helium dynamics
  • Scientific Research and Discoveries
  • Quantum chaos and dynamical systems
  • Heart Rate Variability and Autonomic Control
  • RNA Research and Splicing
  • Cellular transport and secretion
  • Quantum Chromodynamics and Particle Interactions
  • Particle physics theoretical and experimental studies
  • Atomic and Molecular Physics
  • Nuclear Structure and Function
  • Asymmetric Synthesis and Catalysis
  • Atomic and Subatomic Physics Research
  • Astro and Planetary Science
  • Advanced Chemical Physics Studies
  • Nuclear reactor physics and engineering
  • Cold Atom Physics and Bose-Einstein Condensates
  • Pulsars and Gravitational Waves Research
  • Non-Invasive Vital Sign Monitoring
  • Calpain Protease Function and Regulation
  • Synthesis of Tetrazole Derivatives

University of Fukui
2007-2025

The Jikei University Hospital
2019-2024

Saiseikai Ibaraki Hospital
2014-2024

Takenaka (Japan)
2023

Peptidream (Japan)
2022

Nippon Chemical Industrial (Japan)
2021

Kyoto Pharmaceutical University
2018-2020

Saitama Prefecture
2020

Osaka City University
2006-2018

Takeda (Japan)
1995-2017

10.1016/0092-640x(73)90015-6 article EN Atomic Data and Nuclear Data Tables 1973-08-01

A nuclidic mass formula composed of a gross term, an even-odd term and shell is presented as revised version the constructed by present authors published in 2000. The has almost same functional form previous formula, but parameter values it are somewhat different. treated more carefully, considerable improvement realized. exactly one; was obtained using spherical single-particle potentials treating deformed nucleus superposition nuclei. new applicable to nuclei with Z ≥ 2 N 2....

10.1143/ptp.113.305 article EN Progress of Theoretical Physics 2005-02-01

We analyzed the spectral components of RR interval variability under controlled respiration (15 breaths/min) in 56 patients (age range, 35-73 years) referred for coronary angiography; 14 had multivessel disease (group M), 21 one-vessel S), and nonsignificant or normal artery N). There were 43 healthy controls 36-71 C). The no clinical evidence heart failure, hypertension, diabetes mellitus, acute stage infarction taken medication 3 days. autoregressive power density contains two major...

10.1161/01.cir.81.4.1217 article EN Circulation 1990-04-01

The stable nuclear shape in very dense matter composed of protons, neutrons and electrons is investigated. It shown that, as the density increases from 1013 to 1014.5g cm−3, likely change successively sphere cylinder, board, cylindrical hole spherical before uniform neutron-star formed.

10.1143/ptp.71.320 article EN Progress of Theoretical Physics 1984-02-01

In order to investigate the many particle system by variational principle, cluster development method proposed Jastrow is systematically formulated. It a direct generalization of Hartree method, in which two functions are included trial function represent correlations between particles. The energy expectation value expanded series, each term expressed integrals. found that series converges rapidly when marked only for small separations, so this expected be useful especially particles...

10.1143/ptp.17.543 article EN Progress of Theoretical Physics 1957-04-01

The binding energies of H3 and He3 are calculated assuming two-body forces exponential type with hard cores, radii which taken equal for both the spin singlet triplet states. outside potentials supposed charge-independent, chosen so as to fit nuclear data in low energy region. following results have been obtained concerning effects core: 1) it diminishes considerably, 2) wave function is pushed out that Coulomb He3, too large without core, reasonably reduced experimental value difference between He3.

10.1143/ptp.15.222 article EN Progress of Theoretical Physics 1956-03-01

A theory for the gross properties of nuclear β-decay is developed. In order to treat features, summations over final states are replaced by integrations, and average squared absolute value matrix element times level density (this quantity denoted |MΩ(E)|2 where -E decay energy) investigated instead individual elements. First, general slowness allowed qualitatively demonstrated use sum rules. Next, a model set up in make quantitative calculations. this model, an existence "single-nucleon...

10.1143/ptp.41.1470 article EN Progress of Theoretical Physics 1969-06-01

Background and Objectives The acid‐inhibitory effect of lansoprazole depends on differences in cytochrome P450 (CYP) 2C19 genotypes. We assessed whether therapeutic effects gastroesophageal reflux disease (GERD) depended the CYP2C19 genotype status relation to grade GERD. Methods A total 65 patients with GERD (grades A‐D) completed treatment lansoprazole, by taking 30 mg orally once a day for 8 weeks. was determined polymerase chain reaction‐restriction fragment length polymorphism analysis....

10.1067/mcp.2002.127637 article EN Clinical Pharmacology & Therapeutics 2002-10-01

To investigate the diurnal variation in autonomic cardiac control, magnitudes of power spectral components supine and standing heart rate variability were measured during controlled respiration (15 breaths/min). Examination was performed hourly between 0700 2300 h eight male subjects whose activities food intake for 24 laboratory. The respiratory component (0.25 Hz) greater morning than late afternoon (P less 0.05) decreased 30 min after 0.01) position, but it unaffected by time day or while...

10.1152/ajpheart.1990.258.3.h642 article EN AJP Heart and Circulatory Physiology 1990-03-01

NDEL1 is a binding partner of LIS1 that participates in the regulation cytoplasmic dynein function and microtubule organization during mitotic cell division neuronal migration. preferentially localizes to centrosome likely target for cycle-activated kinases, including CDK1. In particular, phosphorylation by CDK1 facilitates katanin p60 recruitment triggers remodeling. Here, we show Aurora-A phosphorylates at Ser251 beginning entry. Interestingly, phosphorylated was rapidly downregulated...

10.1128/mcb.00878-06 article EN Molecular and Cellular Biology 2006-12-13

The proton and neutron separation energies the β-decay are estimated for most of nuclei that have been dis- covered or will be discovered in near future. In this estimation four semi-empirical rules used addition to available experimental data. These also eliminate wrong data correct interpretations results. “best” values thus obtained tabulated. Explanations given some which eliminated need large adjustments.

10.1143/jpsj.16.1497 article EN Journal of the Physical Society of Japan 1961-08-01

The cluster development method formulated in the first paper is applied to discussion on saturation of nuclear forces. We assume Serber type two-body forces with hard cores, which central potentials are assumed be spin independent (eqs. (1) and (2)). potential depth range determined from scattering length effective singlet state, core radius taken as D = 0.6 × 10−13 cm. Coulomb neglected. usual variational used a simple trial correlation function (eq. (6)). By using one- two-nucleon clusters...

10.1143/ptp.18.345 article EN Progress of Theoretical Physics 1957-10-01

An attempt is made to improve the gross theory of nuclear β-decay by modifying one-particle strength function. For Gamow-Teller transition, a function having peak with long tail on each side empolyed. The position, height and width parameters are adjusted so as reproduce experimental giant resonance. A method for calculating sum rules proposed get information tail, results suggest much longer length tails than that previous theory. Similar modifications also other transitions, especially...

10.1143/ptp/84.4.641 article EN Progress of Theoretical Physics 1990-10-01

The gross theory of nuclear β-decay proposed by Takahashi and Yamada is reinvestigated. A revised model for treating the even-odd mass difference set up applied to calculation squared Fermi matrix elements. results superallowed transitions agree well with those expected from isospin formalism except odd-odd even-even nuclei. isospin-forbidden are also studied. consistent existence structure in transitions.

10.1143/ptp.44.663 article EN Progress of Theoretical Physics 1970-09-01

Abstract KPNA1 is a mediator of nucleocytoplasmic transport that abundantly expressed in the mammalian brain and regulates neuronal differentiation synaptic function. De novo mutations Kpna1 have been identified using genome-wide association studies humans with schizophrenia; however, it remains unclear how contributes to schizophrenia pathogenesis. Recent suggested complex combination genetic environmental factors are closely related psychiatric disorders. Here, we found subchronic...

10.1038/s41598-024-53237-3 article EN cc-by Scientific Reports 2024-02-09

The T-SPOT.TB assay is widely used for the adjunctive diagnosis of tuberculosis (TB). However, clinicians often encounter false-negative results. extent TB spread may influence host immune functions, which can results test. few previous reports have investigated association between radiologic pulmonary (PTB) severity and test We retrospectively patients with culture-confirmed at Jikei University Daisan Hospital September 2016 December 2021. aimed to clarify PTB severity, according computed...

10.1186/s12879-025-10777-x article EN cc-by-nc-nd BMC Infectious Diseases 2025-03-20

10.1016/0092-640x(88)90026-5 article EN Atomic Data and Nuclear Data Tables 1988-07-01
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