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Background
Collagen fibres in the dermis play an important structural role in the skin. Age‐related changes to these fibres cause wrinkles and slackness of facial skin. However, it is not clear how dermal collagen fibres affect skin colour. The purpose of this study was to clarify the influence of altered collagen fibres on skin colour, using both experimental measurement of fibre density and Monte...
We proposed a confocal laser scanning microscopy based on dual-comb spectroscopy, which enables the three-dimensional quantitative amplitude and phase imaging.
Some preoperative factors affecting the outcome of microdissection testicular sperm extraction (micro‐TESE) have been previously evaluated. However, other than Klinefelter syndrome (KS), no other chromosomal anomalies have been discussed in the context of sperm retrieval outcomes. The objective of this study was to describe chromosomal anomalies and their relationship with sperm retrieval outcomes...
Obesity is reported to have adverse effects on semen quality and the endocrine system. In this study, we evaluated the effect of obesity on sperm retrieval outcome and reproductive hormone levels in Japanese men with non‐obstructive azoospermia (NOA). This study is based on the clinical records of 217 men [172 with a 46,XY karyotype, 45 with Klinefelter syndrome (KS)] with NOA who underwent microdissection...
Dimensional-conversion optical frequency comb (OFC) is proposed to explore new applications of OFC. Combination of OFC with the wavelength/space conversion enables us to establish both confocal imaging and full-field imaging under the scan-less condition.
The disturbance/radio-frequency conversion in a fiber comb cavity was effectively used for static and dynamic strain sensing by combination with the null method based on the feedback control of a repletion frequency.
We compare two methods of wavefront analysis of THz pulses associated with a 2D electro-optic imaging system. The first one is the standard Hartmann sensor, and the second one is based on the well-known fact that EO sampling can record the phase variation of the THz electric field.
Frequency measurement based on dual THz frequency combs of photocarrier (dual PC-THz combs) is a promising method for the real-time measurement of the absolute frequency in CW-THz radiation without the need for cryogenic cooling. However, use of dual femtosecond lasers hinders the practicability of this method. In this paper, we generated dual PC-THz combs using a free-running, dual-wavelength mode-locked...
Topology optimization has a great potential for finding out more compact and higher performance optical waveguide devices. In past researches on topology optimization, the finite element method (FEM) or the finite difference time domain (FDTD) method has mainly been employed as a numerical analysis method [1, 2]. In the case that the longitudinal refractive index distribution varies gradually and...
Prevalence of ankle osteoarthritis (OA) is lower than that of knee OA, however, the molecular mechanisms underlying the difference remain unrevealed. In the present study, we developed mouse ankle OA models for use as tools to investigate pathophysiology of ankle OA and molecular characteristics of ankle cartilage.We anatomically and histologically examined ankle and knee joints of C57BL/6 mice, and...
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