A5083590076- Child and Adolescent Psychosocial and Emotional Development
- Mental Health Treatment and Access
- Semiconductor materials and devices
- Silicon and Solar Cell Technologies
- Silicon Nanostructures and Photoluminescence
- Suicide and Self-Harm Studies
- Thin-Film Transistor Technologies
- Magnetic and transport properties of perovskites and related materials
- Dementia and Cognitive Impairment Research
- Advancements in Semiconductor Devices and Circuit Design
- Mental Health Research Topics
- Advanced Condensed Matter Physics
- Mechanical and Optical Resonators
- Semiconductor Quantum Structures and Devices
- Maternal Mental Health During Pregnancy and Postpartum
- Integrated Circuits and Semiconductor Failure Analysis
- Youth Substance Use and School Attendance
- COVID-19 and Mental Health
- Semiconductor materials and interfaces
- Rare-earth and actinide compounds
- Multiferroics and related materials
- Iterative Methods for Nonlinear Equations
- Anxiety, Depression, Psychometrics, Treatment, Cognitive Processes
- Psychosomatic Disorders and Their Treatments
- Advanced MEMS and NEMS Technologies
Tokyo Metropolitan Institute of Medical Science
2022-2025
The University of Tokyo
1998-2025
Japan Graduate School of Education University
2019-2024
Tokyo Metropolitan Institute of Gerontology
2024
Leiden University Medical Center
2024
Hitachi (Japan)
1990-2023
Graduate School USA
2020
Tohoku University
1992-2018
Chiba Institute of Technology
2016
Nippon Medical School
2008
The spin gap energy (\ensuremath{\approx} 30 meV) associated with the low-spin ($S=0$) to high-spin ($S=2$) transition in LaCo${\mathrm{O}}_{3}$ was proved be considerably smaller than charge 0.1 eV) which estimated by optical spectroscopy. Hole doping ground state of leads formation localized magnetic polarons unusually high number ($S=10\ensuremath{-}16$), can viewed as a precursor doping-induced ferromagnetic metallic state.
Infrared spectroscopy of a ${\mathrm{LaCoO}}_{3}$ crystal has revealed anomalous splitting the phonon modes as well their intensity variation with temperature during spin-state transition. The observed results can be interpreted in terms local lattice distortion arising from Jahn-Teller effect thermally excited intermediate-spin (S=1) state ${\mathrm{Co}}^{3+}$ ions. A possible role ${\mathrm{e}}_{\mathrm{g}}$ orbital ordering is discussed analysis split Co-O stretching modes.
The thermally induced insulator-metal transition (IMT) has been investigated for single crystals of undoped and lightly doped ${\mathrm{LaCoO}}_{3}$ by measurements the optical-conductivity spectra, resistivity, Hall coefficient up to 800 K. IMT around 500 K, where spin-state from nonmagnetic $(S=0)$ ground state intermediate-spin $(S=1)$ is nearly completed, characterized a large energy-scale change electronic structure as well steep increase carrier number typical metallic value due...
Insulator-metal transitions and related electronic structures have been investigated for single crystals of perovskite-type cobalt oxides $R\mathrm{Co}{\mathrm{O}}_{3}(R=\mathrm{L}\mathrm{a},\phantom{\rule{0ex}{0ex}}\mathrm{P}\mathrm{r},\phantom{\rule{0ex}{0ex}}\mathrm{N}\mathrm{d},\phantom{\rule{0ex}{0ex}}\mathrm{S}\mathrm{m},\phantom{\rule{0ex}{0ex}}\mathrm{E}\mathrm{u},\phantom{\rule{0ex}{0ex}}\mathrm{a}\mathrm{n}\mathrm{d}\phantom{\rule{0ex}{0ex}}\mathrm{G}\mathrm{d})$ with $R$-dependent...
Abstract Background and Hypothesis Problematic internet use (PIU) is prevalent among adolescents. Past research suggested cross-sectional associations between PIU psychotic experiences, but little information available on the longitudinal association. We hypothesized that in adolescence may be longitudinally associated with adjusting for confounders. Study Design analyzed a random sample of adolescents Tokyo Teen Cohort to examine how at ages 10 (2012–2015), 12 (2014–2017), 16 (2019–2021)...
OBJECTIVE: To investigate the relation between atrophy of hippocampus and parahippocampal gyrus (the % hippocampal area) cerebral metabolic rate for glucose (CMRGlc) in Alzheimer9s disease. METHODS: 13 patients with probable disease by NINCDS-ADRDA criteria (six men; seven women, mean age 71 years, mini mental state 13.8 (SD 4.6)) matched controls were studied. T1 weighted MRI (0.5T) images used evaluation area. With a digitiser system, percentage area to brain was calculated. Eight received...
Solid-phase crystallization of Si1−xGex (x=0–1.0) alloy layers deposited on a Si (100) substrate was investigated by ellipsometric spectroscopy. From dispersion analysis dielectric spectra, we deduced crystallinity corresponding to the degree average lattice alignment composed polycrystalline and dynamical change in during crystallization. We found that temperature (TC) rapidly decreased with increasing Ge concentration (x). When x small (=0–0.3), highest ∼0.8 for single crystals while...
ObjectiveEvidence on the impact of COVID-19 pandemic adolescent mental health is mixed and does not disentangle natural age-related changes. We compared depressive symptoms among 16-year-olds surveyed, at a fourth wave, before or during pandemic, while accounting for expected trajectories within-person change based 3 prior waves.MethodIn this longitudinal cohort 3,171 adolescents in Tokyo, Japan, were grouped their age 16 survey timing: pre-pandemic (February 2019 to February 2020)...
Informal caring is associated with mental health deterioration among young people and impacts their help-seeking ability. Social network can provide social support mitigate the impact of informal care. However, carers may avoid identification withdraw from networks. Evidence regarding reciprocal associations between caring, network, scarce. We aimed to investigate directionality specificity three factors in people. This study used consecutive assessment data (2021–2023; T0–T2) Japan COVID-19...
The kinetic control of macrocyclic motions is a key aspect mechanically interlocked molecules (MIMs). Although hydrogen bonding (H‐bonding) offers high reversibility and selectivity, the use neutral H‐bonding to mobility remains limited. In this study, effects on threading dethreading kinetics linked rotaxanes containing permethylated α‐cyclodextrin unit an aniline moiety were investigated. UV‐Vis spectroscopy revealed significantly reduced reaction rates in H‐bond acceptor solvents, such as...
Magneto-optical Kerr effects have been investigated for perovskite-type hole-doped oxides ${\mathrm{La}}_{1\ensuremath{-}x}{\mathrm{Sr}}_{x}{\mathrm{MnO}}_{3} (0<~x<~0.3)$ and ${\mathrm{La}}_{1\ensuremath{-}x}{\mathrm{Sr}}_{x}{\mathrm{CoO}}_{3} in the photon energy range between 0.9 5.3 eV at room temperature. In ${\mathrm{La}}_{1\ensuremath{-}x}{\mathrm{Sr}}_{x}{\mathrm{MnO}}_{3},$ charge-transfer-type spectra are observed lowest $(\ensuremath{\sim}1.2 \mathrm{eV})$ second-lowest...
Abstract Background School teachers are well-positioned to recognize mental health problems in their students and help them seek appropriate help. Therefore, need have high levels of literacy (MHL). In East Asia, however, few studies examined MHL teachers. this study, were investigated Japanese Methods Teachers ( n = 665) from 27 schools answered a self-administered questionnaire which assessed (a) knowledge about health/illnesses, (b) correct recognition specific illnesses (depression,...
Cross-sectional studies have shown an association between lower help-seeking intentions and greater depressive symptoms among adolescents. However, no longitudinal study has examined the direction of this association. The current investigated whether are reciprocally associated at within-person (individual) level during early to mid-adolescence.Longitudinal data on in adolescents were obtained from a population-based birth cohort (Tokyo Teen Cohort; N = 3,171) four time points (10y, 12y,...
Background Glucuronic acid (GlcA) is crucial in the glucuronidation pathway, facilitating metabolism and elimination of various substances drugs. Recent studies have noted elevated GlcA levels patients with schizophrenia (SCZ) compared healthy individuals. However, it remains unclear whether this elevation contributes to SCZ pathophysiology or results from medication effects. Aims This study investigated relationship between peripheral clinical characteristics assess these associations...
A novel strategy for localized thermal history analysis using organic azides immobilized on ZnO nanowire arrays is presented. The pyrolysis of the surface azido groups followed by introduction of...
The composition ranges of Al-Ni-Co decagonal quasicrystals in superlattice-ordered and disordered states have been investigated. single-decagonal-phase region is limited to a very small area around ${\mathrm{Al}}_{71}$${\mathrm{Ni}}_{16}$${\mathrm{Co}}_{13}$ at 650 \ifmmode^\circ\else\textdegree\fi{}C, which expands along an almost Al-constant line 850 \ifmmode^\circ\else\textdegree\fi{}C. \ifmmode^\circ\else\textdegree\fi{}C entirely yields the completely ordered state, while that either...
Selectively enlarging laser crystallization (SELAX) has been proposed as a new process for use in the fabrication of thin-film transistors (TFTs). This method is capable producing large-grained and flat film poly-Si. The average grain size 0.3/spl times/5 /spl mu/m, surface roughness poly-Si layer less than 5 nm. TFTs fabricated with this have better performance are more uniform those produced conventional excimer (ELC) method. values field-effect mobility 440 cm/sup 2//Vs (n-type), 130...
Abstract Background Little information is available on the association between gender nonconformity during adolescence and subsequent mental health. While distress related to may be socially produced rather than attributed individual-level factors, further research needed better understand role of psychosocial factors in this context. Method We analyzed data from Tokyo Teen Cohort, obtained through random sampling adolescents born 2002 2004. used inverse probability weighting examine at ages...
Abstract Objectives Cognitive impairment, pain and depressive symptoms are common interrelated factors in older adults. However, the directionality specificity of their association remains unclarified. This study explored whether these prospectively increase reciprocal risk examined longitudinal between quality life (QoL). Methods used data from The Older Persons Informal Caregivers Survey Minimal Data Set (TOPICS‐MDS; Netherlands). adults self‐reported cognitive pain, QoL at baseline after...
Cancer education programs are regularly conducted in schools Japan. Previous reports on their effectiveness were based surveys several months after the education. We aimed to evaluate whether cancer for children influenced behavioral changes adulthood. targeted where Japan Society has since 2011 and program participants older than 21 years currently. Invitations sent controls who graduated one year before or participants, answers obtained using an online questionnaire. Data collected...