96 research outputs found
Valley hydrodynamics in graphene
Recent experiments have elucidated that novel nonequilibrium states
consistent with the hydrodynamic description of electrons are realized in
graphene, which hosts the valley degrees of freedom (DOF) at the corners of the
Brillouin zone. Here, we formulate a theory of electron hydrodynamics with the
valley DOF for noncentrosymmetric graphene and find that the effective theory
has a close analogy with micropolar fluids. Our theory reveals nonlinear valley
dynamics including a longitudinal valley current and a circular dichroic valley
polarization induced by off-resonant light.Comment: 8 pages, 3 figures, and 1 tabl
Acousto-magnonic Hall effect in honeycomb antiferromagnets
The recently discovered van der Waals antiferromagnets have suffered from the
lack of a comprehensive method to study their magnetic properties. Here, we
propose a dissipationless magnon spin Hall current driven by surface acoustic
waves as a novel probe for such antiferromagnets. Our results pave the way
towards mechanical detection and manipulation of the magnetic order in
two-dimensional antiferromagnets. Furthermore, they will overcome the
difficulties with weak magnetic responses inherent in the use of
antiferromagnets and hence provide a building block for future
antiferromagnetic spintronics.Comment: 8 pages and 4 figure
<Abstract of published report>The Activation and Nuclear Translocation of Extracellular Signal-regulated Kinases (ERK-1 and -2) Appear Not to Be Required for Elongation of Neurites in PC12D Cells.
Experience over five years using a shunt placed between the right ventricle and the pulmonary arteries during initial reconstruction of hypoplasia of the left heart
Effect of heparin and related glycosaminoglycan on PDGF-induced lung fibroblast proliferation, chemotactic response and matrix metalloproteinases activity
Differential regulation of metalloproteinase production, proliferation and chemotaxis of human lung fibroblasts by PDGF, Interleukin-1β and TNF-α
Impact of glycemic control with sitagliptin on the 2‑year progression of arterial stiffness : a sub‑analysis of the PROLOGUE study
Background: No conclusive evidence has been obtained yet on the significance of the effects of dipeptidyl peptidase-4 (DPP-4 inhibitor) treatment on the arterial stiffness in clinical settings. In addition, the effects of good glycemic control on the arterial stiffness have also not been clarified yet. As a sub-analysis of the PROLOGUE study, we examined the effect of a DPP-4 inhibitor (sitagliptin) on the 2-year progression of the arterial stiffness and also to determine the effect of good glycemic control on the rate of progression of the arterial stiffness.
Methods: In the PROLOGUE study, the study participants were either allocated to add-on sitagliptin treatment or to continued treatment with conventional anti-diabetic agents. Among the 463 participants of the PROLOGUE study, we succeeded in measuring the brachial-ankle pulse wave velocity (baPWV) at least two times during the 2-year study period in 96 subjects.
Results: The changes in the baPWV during the study period were similar between the both groups (i.e., with/without staglipitin), overall. On the other hand, when the study subjects were divided into two groups according to the glycemic control status during the study period {good glycemic control group (GC) = hemoglobin (Hb)A1c <7.0 at both 12 and 24 months after the treatment randomization; poor glycemic control group (PC) = HbA1c ≥7.0 at either 12 months, 24 months, or both}, the 2-year increase of the baPWV was marginally significantly larger in the PC group (144 ± 235 cm/s) as compared to that the GC group (−10 ± 282 cm/s) (p = 0.036).
Conclusion: While the present study could not confirm the beneficial effect of sitagliptin per se on the arterial stiffness, the results suggested that good glycemic control appears to be beneficial for delaying the annual progression of the arterial stiffness
Human Sapovirus in Clams, Japan
Human sapovirus was detected in 4 of 57 clam packages by reverse transcription–PCR and sequence analysis. This represents the first finding of sapovirus contamination in food. Closely matching sequences have been detected in stool specimens from patients with gastroenteritis in Japan, which indicates a possible food-to-human transmission link
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