Publications by authors named "Kiuchi K"

We examine nucleosynthesis in the ejecta of black-hole-neutron-star mergers based on the results of long-term neutrino-radiation-magnetohydrodynamics simulations for the first time. We find that the combination of dynamical and postmerger ejecta reproduces a solarlike r-process pattern. Moreover, the enhancement level of actinides is highly sensitive to the distribution of both the electron fraction and the velocity of the dynamical ejecta.

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Atrial fibrillation (AF) is strongly associated with strokes, heart failure, and increased mortality. This study aims to identify the monocyte-macrophage heterogeneity and interactions of these cells with non-immune cells, and to identify functional biomarkers in patients with AF. Therefore, we assess the single cell landscape of left atria (LA), using a combination of single cell and nucleus RNA-seq.

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  • Alzheimer's disease (AD) not only affects memory but also impairments in visuospatial cognitive functions, with early-stage patients often receiving insufficient attention.
  • A study involving 57 AD patients and 22 cognitively normal (CN) individuals investigated the relationship between myelin integrity (measured using T1w/T2w ratios) and visuospatial abilities through the Rey-Osterrieth Complex Figure Copy Test.
  • Results revealed that lower myelin integrity in specific brain areas (right middle temporal gyrus and right praecuneus) was significantly linked to visuospatial cognitive deficits in AD patients, highlighting the importance of myelin health in cognitive function.
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  • - The study examined how consistently retentive devices made from cast titanium could reproduce their shapes using different adhesives for retention beads.
  • - Wax patterns were created and cast using two types of machines, and various imaging and measurement techniques were employed to assess the quality of the casts.
  • - Results showed that the choice of adhesive did not significantly affect the shape reproduction, but better results were achieved with a one-chamber casting machine when using a combination of two adhesives.
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Aims: Several algorithms can differentiate inferior axis premature ventricular contractions (PVCs) originating from the right side and left side on 12-lead electrocardiograms (ECGs). However, it is unclear whether distinguishing the origin should rely solely on PVC or incorporate sinus rhythm (SR). We compared the dual-rhythm model (incorporating both SR and PVC) to the PVC model (using PVC alone) and quantified the contribution of each ECG lead in predicting the PVC origin for each cardiac rotation.

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  • The study analyzed 1,402 hospitalized patients with acute heart failure (AHF) to evaluate the fibrinogen-to-albumin ratio (FAR) and categorized patients into three groups based on their FAR values.
  • It found that high FAR was linked to inflammation, diabetes mellitus, and ischemic heart disease, and these patients had a significantly poorer prognosis for all-cause mortality over 730 days compared to those with medium or low FAR.
  • In contrast, in patients with low albumin levels, low FAR was an independent predictor of multiple adverse outcomes, including 730-day mortality and heart failure events.
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Recently, the use of digital technologies, such as avatars and virtual reality, has been increasingly explored to address university students' mental health issues. However, there is limited research on the advantages and disadvantages of counselors using avatars in online video counseling. Herein, 25 university students were enrolled in a pilot online counseling session with a human counselor-controlled avatar, and asked about their emotional experiences and impressions of the avatar and to provide qualitative feedback on their communication experience.

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This study investigated the usefulness of a dental laboratory polymerization unit with light-emitting diode (LED) as a light source. The depth of cure (n=15), water absorption and solubility (n=9) of two indirect composite materials (Cesead N and Solidex Hardura) were evaluated by five dental laboratory polymerization units (LED Cure Master, Twinkle LED, α-Light V, α-Light II, and Hyper LII). Statistical analysis was performed by one-way ANOVA and Tukey test or non-parametric tests.

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Background: The aim of the present study is to elucidate prognostic impact of temporal trends of non-surgical patients requiring intensive care over a 10-year period.

Methods And Results: A total of 4276 non-surgical patients requiring intensive care from 2012 to 2021 were enrolled. Patients' backgrounds, in-hospital management, and prognoses were compared between five groups [2012-2013 (n = 825), 2014-2015 (n = 784), 2016-2017 (n = 864), 2018-2019 (n = 939), and 2020-2021 (n = 867)].

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Late kidney injury (LKI) in patients with acute heart failure (AHF) requiring intensive care is poorly understood.We analyzed 821 patients with AHF who required intensive care. We defined LKI based on the ratio of the creatinine level 1 year after admission for AHF to the baseline creatinine level.

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Objectives: This study investigated the causal effect of high stress assessment via an interview on the mental and physical health of workers 1 month later.

Methods: Stress assessment interviews and feedback were conducted with 50 Japanese workers. In addition to the interviewer, two occupational health professionals assessed participants' stress based on recordings.

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The evaluation of triglyceride-glucose (TyG) index has not been sufficient in patients requiring nonsurgical intensive care.A total of 3,906 patients who required intensive care were enrolled. We computed the TyG index using the value on admission by the following formula: ln [triglyceride (mg/dL) × glucose (mg/dL) /2].

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  • - A study involving 1,840 Japanese patients with acute coronary syndrome (ACS) identified two groups: those who experienced major bleeding and those who did not, over a 2-year follow-up period.
  • - Out of the participants, 124 patients (6.7%) had major bleeding, which was linked to a significantly higher rate of cardiovascular deaths (26.4% vs. 8.5%).
  • - Analysis through optical coherence tomography revealed that disrupted fibrous cap and calcified plaque were more common in patients who bled, with disrupted fibrous cap being a significant predictor of major bleeding.
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This study conducted an interview-based stress evaluation that considered the psychosocial models of work stress and verified the evaluation's predictive validity. A four-stage assessment comprising a pre-survey, pre-interview questionnaire, stress assessment interview, and post-survey after one month was conducted with 50 Japanese workers. Additionally, 16 occupational health professionals provided stress evaluations based on recorded interview videos.

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  • The new calibration system for cosmic microwave background (CMB) polarization uses a sparse wire grid to reflect polarized light, improving accuracy in measurements.
  • A remote-controlled feature allows for regular calibration, which was previously not possible, utilizing electric actuators to adjust the wire grid's position.
  • The system includes a motor for rotation and sensors to ensure precise monitoring, resulting in minimal systematic errors and planned installation in telescopes at Simons Observatory.
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There is a strong demand for remote monitoring systems to gather health data. This study investigated the safety, usefulness, and patient satisfaction in outpatient care using telehealth with real-time electrocardiogram (ECG) monitoring after catheter ablation. In all, 38 patients who underwent catheter ablation were followed up using telehealth.

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Background: The degree and timing of acute kidney injury (AKI) on admission and during hospitalization in patients requiring non-surgical intensive care remain unclear.

Methods and results: In this study, 3,758 patients requiring intensive care were analyzed retrospectively. AKI was defined based on the ratio of serum creatinine concentrations recorded at each time point (i.

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Animals change their behavior depending on external circumstances, internal factors, and their interactions. Locomotion state is a crucial internal factor that profoundly affects sensory perception and behavior. However, studying the behavioral impacts of locomotion state in free-moving animals has been challenging due to difficulty in reproducing quantitatively identical stimuli in freely moving animals.

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We perform a general-relativistic neutrino-radiation magnetohydrodynamic simulation of a one second-long binary neutron star merger on the Japanese supercomputer Fugaku using about 85 million CPU hours with 20 736 CPUs. We consider an asymmetric binary neutron star merger with masses of 1.2M_{⊙} and 1.

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Background: Cardiogenic shock (CS) is caused by primary cardiac dysfunction and induced by various and heterogeneous diseases (e.g., acute impairment of cardiac performance, or acute or chronic impairment of cardiac performance).

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Introduction: Intermuscular implantations of subcutaneous implantable cardioverter-defibrillators (S-ICD) have been recommended, but the position of the anterior border of the latissimus dorsi muscle (LDM) has not previously been evaluated in establishing an incision line to facilitate the intermuscular approach. The objective of this study is to evalua the position and trend of the anterior border of the LDM in patients who are candidates for implantable cardioverter-defibrillators.

Methods: The distance from the back to the anterior border of the LDM (A) and the anterior-posterior width of the chest wall (B) were measured on computed tomography retrospectively, and the ratio (=A/B) was used as the position of the anterior border of the LDM.

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Plasma xanthine oxidoreductase (XOR) activity in patients with cardiopulmonary arrest (CPA) has not yet been studied.A total of 1,158 patients who required intensive care and 231 control patients who attended a cardiovascular outpatient clinic were prospectively analyzed. Blood samples were collected within 15 minutes of admission from patients in intensive care patients, which were divided into a CPA group (n = 1,053) and a no-CPA group (n = 105).

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The time-dependent changes in the simultaneous evaluation of B-type natriuretic peptide (BNP) and N-terminal pro-BNP (NT-proBNP) levels during hospitalization for acute heart failure (AHF) remain obscure.A total of 356 AHF patients were analyzed. Blood samples were collected within 15 minutes of admission (Day 1), 48-120 hours (Day 2-5) and between days 7 and 21 (Before-discharge).

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