460 research outputs found
The volcanic and radial expansion/contraction history of the Moon simulated by numerical models of magmatism in the convective mantle
To understand the evolution of the Moon, we numerically modeled mantle
convection and magmatism in a two-dimensional polar rectangular mantle.
Magmatism occurs as an upward permeable flow of magma generated by
decompression melting through the convecting matrix. The mantle is assumed to
be initially enriched in heat-producing elements (HPEs) and compositionally
dense ilmenite-bearing cumulates (IBC) at its base. Here, we newly show that
magma generation and migration play a crucial role in the calculated volcanic
and radial expansion/contraction history. Magma is generated in the deep mantle
by internal heating for the first several hundred million years. A large volume
of the generated magma ascends to the surface as partially molten fingers and
plumes driven by melt-buoyancy to cause a volcanic activity and radial
expansion of the planet with the peak at 3.5-4 Gyr ago. Eventually, however,
the planet begins to radially contract when the mantle solidifies by cooling
from the surface boundary. As the mantle is cooled, the activity of partially
molten plumes declines but continues for billions of years after the peak
because some basal materials enriched in the dense IBC components hold HPEs.
The calculated volcanic and radial expansion/contraction history is consistent
with the observed history of the Moon. Our simulations suggest a substantial
fraction of the mantle was solid, and there was a basal layer enriched in HPEs
and the IBC components at the beginning of the history of the Moon.Comment: 36 pages, 10 figures, and 3 table
Inhibitory effects of glucocorticoids on prolactin release induced by thyrotropin-releasing hormone in man
Glucocorticoid effect on thyrotropin-releasing hormone (TRH)-induced prolactin (PRL) release was studied in female patients with collagen or autoimmune diseases. Long-term, high dose glucocorticoid therapy tended to inhibit the response of plasma PRL to TRH. A negative correlation (r=-0.40) was found between the logarithm of total dose of glucocorticoids received and the magnitude of plasma PRL response to TRH (p less than .05).</p
DeepSaucer: Unified Environment for Verifying Deep Neural Networks
In recent years, a number of methods for verifying DNNs have been developed.
Because the approaches of the methods differ and have their own limitations, we
think that a number of verification methods should be applied to a developed
DNN. To apply a number of methods to the DNN, it is necessary to translate
either the implementation of the DNN or the verification method so that one
runs in the same environment as the other. Since those translations are
time-consuming, a utility tool, named DeepSaucer, which helps to retain and
reuse implementations of DNNs, verification methods, and their environments, is
proposed. In DeepSaucer, code snippets of loading DNNs, running verification
methods, and creating their environments are retained and reused as software
assets in order to reduce cost of verifying DNNs. The feasibility of DeepSaucer
is confirmed by implementing it on the basis of Anaconda, which provides
virtual environment for loading a DNN and running a verification method. In
addition, the effectiveness of DeepSaucer is demonstrated by usecase examples
Effect of lifestyle on 6‐year periodontitis incidence or progression and tooth loss in older adults
AimTo evaluate the longitudinal association of combined healthy lifestyle factors with incidence or progression of periodontitis and tooth loss in older adults.Materials and methodsThis 6‐year study included 374 Japanese 70‐year olds with 7,157 teeth, from a source eligible baseline population of 554 individuals. Four lifestyle factors—cigarette smoking, physical activity, relative weight, and dietary quality—were scored as healthy (1 point) or unhealthy (0 point). Adding the individual scores generated the “healthy lifestyle score” (0–4 points). Multilevel mixed‐effects logistic regression models were applied to evaluate tooth‐specific associations between the baseline healthy lifestyle score and the incidence or progression of periodontitis (increase in clinical attachment loss ≥3 mm) and tooth loss.ResultsAfter 6 years, 19.0% of the teeth exhibited periodontitis incidence or progression and 8.2% were lost. Compared with a healthy lifestyle score of 0–1 (least healthy), the highest score (4 points) was associated with a significantly lower tooth‐specific risk of periodontitis (adjusted odds ratio = 0.32; 95% confidence interval: 0.16–0.62) and tooth loss (adjusted odds ratio = 0.42; 95% confidence interval: 0.23–0.77).ConclusionsSimultaneous adherence to multiple healthy lifestyle factors significantly lowers the risk of incidence or progression of periodontitis and tooth loss in older adults.Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/145573/1/jcpe12920_am.pdfhttps://deepblue.lib.umich.edu/bitstream/2027.42/145573/2/jcpe12920.pd
Development of Irradiation Techniques for Material Study in JMTR
The Oarai Branch has been carrying out the irradiation of materials using the JMTR, for these twenty years. We have made efforts to improve the irradiation conditions and to satisfy. the various demands evoked by our users. Here, we describe our efforts to improve the irradiation rigs and the irradiation techniques
Serial Assessment of Immune Status by Circulating CD8+ Effector T Cell Frequencies for Posttransplant Infectious Complications
To clarify the role of CD8+ effector T cells for infectious complications, 92 recipients were classified according to the hierarchical clustering of preoperative CD8+CD45 isoforms: Group I was naive, Group II was effector memory, and Group III was effector (E) T cell-dominant. The posttransplant infection rates progressively increased from 29% in Group I to 64.3% in Group III recipients. The posttransplant immune status was compared with the pretransplant status, based on the measure (% difference) and its graphical form (scatter plot). In Groups I and II, both approaches showed a strong upward deviation from pretransplant status upon posttransplant infection, indicating an enhanced clearance of pathogens. In Group III, in contrast, both approaches showed a clear downward deviation from preoperative status, indicating deficient cytotoxicity. The % E difference and scatter plot can be used as a useful indicator of a posttransplant infectious complication
Antiobesity Effect of Eicosapentaenoic Acid in High-Fat/High-Sucrose Diet–Induced Obesity: Importance of Hepatic Lipogenesis
Short running title: EPA prevents obesity with enhanced lipogenesis Address correspondence to
Early-stage antibody kinetics after the third dose of BNT162b2 mRNA COVID-19 vaccination measured by a point-of-care fingertip whole blood testing
Amid the Coronavirus Disease 2019 pandemic, we aimed to demonstrate the accuracy of the fingertip whole blood sampling test (FWT) in measuring the antibody titer and uncovering its dynamics shortly after booster vaccination. Mokobio SARS-CoV-2 IgM & IgG Quantum Dot immunoassay (Mokobio Biotechnology R&D Center Inc., MD, USA) was used as a point-of-care FWT in 226 health care workers (HCWs) who had received two doses of the BNT162b2 mRNA vaccine (Pfizer-BioNTech) at least 8 months prior. Each participant tested their antibody titers before and after the third-dose booster up to 14-days. The effect of the booster was observed as early as the fourth day after vaccination, which exceeded the detection limit (>30,000 U/mL) by 2.3% on the fifth day, 12.2% on the sixth day, and 22.5% after the seventh day. Significant positive correlations were observed between the pre- and post-vaccination (the seventh and eighth days) antibody titers (correlation coefficient, 0.405; p<0.001). FWT is useful for examining antibody titers as a point-of-care test. Rapid response of antibody titer started as early as the fourth day post-vaccination, while the presence of weak responders to BNT162b2 vaccine was indicated
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