Publications by authors named "Kota Endo"
Rhabdomyolysis can lead to acute kidney injury (AKI), primarily due to myoglobin-induced tubular damage. We present a case of slowly progressive rhabdomyolysis following SARS-CoV-2 infection in a 28-year-old male who was monitored through serial serum creatine kinase (CK) and myoglobin levels. Despite prominent CK elevations, the patient did not develop AKI, probably due to disproportionately mild serum myoglobin elevation with distinctive cyclic spikes.
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- A new ultrasound-guided kidney biopsy method called SIGN was found to be faster and just as effective as traditional methods.
- The study involved comparing the procedure time and glomeruli obtained between two groups: one using SIGN and another using a conventional technique.
- Results showed that SIGN reduced the median procedure time (2 min vs. 3 min) and did not increase complications, making it suitable for both experienced nephrologists and trainees.
Article Synopsis
- Refraction is a key optical phenomenon that helps manipulate light, although traditional lenses are limited by material properties.
- Researchers have developed an innovative gradient-refractive-index (GRIN) metalens that operates at a very high refractive index, improving the directivity of terahertz waves from a resonant tunneling diode by 4.2 times.
- This new metalens can easily integrate with terahertz continuous-wave sources, paving the way for advanced applications in 6G wireless communications and imaging, using high refractive index metasurfaces instead of conventional materials.
Terahertz flat optics is a design concept for replacing conventional three-dimensional bulky optical components with two-dimensional ultra-thin optical components. However, high refractive index materials suitable for flat optics are frequently subject to high Fresnel reflections due to the cumbersome control of the relative permeability it requires. Here we experimentally demonstrate a reflectionless metasurface with a high refractive index of 5.
View Article and Find Full Text PDFThe entropic and energetic elasticities of natural rubber with a nanomatrix structure are investigated by measuring the viscoelastic properties of deproteinized natural rubber (DPNR)--polystyrene (PS). A nanomatrix structure is formed by graft copolymerization of styrene onto the surface of natural rubber particles, followed by coagulation. The morphology of the nanomatrix structure is observed with transmission electron microscopy.
View Article and Find Full Text PDFManipulation of electromagnetic waves from radio to visible wavelengths could lead to technology to investigate unexplored wavebands. However, flexible control of terahertz waves is difficult, because few naturally occurring, appropriate materials and sophisticated optical components exist. We propose a 2.
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