Hiroki Yamazaki

Fracture initiation in silicate glasses via a universal shear localization mechanism

Matthieu Bourguignon, Gustavo Alberto Rosales-Sosa, Yoshinari Kato, Bruno Bresson et autres

Linking crack initiation in silicate glasses to shear banding identifies shear localization as a key driver of fracture in this archetypal brittle material. The results unify network glasses with other families of amorphous solids, such as bulk metallic glasses and glassy polymers, …

fr, jp, us (code pays fourni par la source)

Fracture initiation in silicate glasses via a universal shear localization mechanism

Matthieu Bourguignon, Gustavo Alberto Rosales-Sosa, Yoshinari Kato, Bruno Bresson et autres

Shear bands lie at the root of fracture initiation in bulk metallic glasses and amorphous polymers. For silicate glasses, in contrast, studies have largely emphasized permanent volumetric strain, commonly referred to as densification. Here we systematically investigate indentation-induced fracture in two distinct …

A Combined Microbeam and Phase-Field Approach to Identify the Toughness and Ultimate Strength of Amorphous Silica

Gustavo Alberto Rosales-Sosa, Gergely Molnár, Yoshinari Kato, Taichi Nakashima et autres

jp, fr (code pays fourni par la source)

Structural Changes upon Ambient Temperature Densification in Calcium Aluminoborosilicate Glasses: Relation to Indentation Crack Resistance

Yara Hellen Firmo Gomes, Gustavo Alberto Rosales-Sosa, Shingo Nakane, Yoshinari Kato et autres

Improving crack initiation resistance is an important objective of current glass research. High-pressure and indentation experiments are considered important predictors for the compositional design of glassy materials with optimized performances. For developing insights into the stress dissipation mechanisms, it is important to …

br, jp (code pays fourni par la source)

Spontaneous thrombosis of an unruptured recurrent artery of Heubner aneurysm within a few months: illustrative case

Naoki Irizato, Masatoshi Takagaki, Hajime Nakamura, Tomohiko Ozaki et autres

BACKGROUND: The recurrent artery of Heubner (RAH) is a branch of the anterior cerebral artery that supplies blood flow to key deep cerebral structures. Aneurysms in the main trunk of the RAH are exceedingly rare, and previous reports have only confirmed cases …

jp (code pays fourni par la source)

Outcome prediction in aneurysmal subarachnoid hemorrhage with world federation of neurological societies grade V (OPAS-V)

Shuhei Yamada, Takeo Nishida, Tomofumi TAKENAKA, Hiroki Yamazaki et autres

BACKGROUND: Aneurysmal subarachnoid hemorrhage (aSAH) with World Federation of Neurological Societies (WFNS) grade V has a high mortality rate and poor prognosis. Some patients with WFNS grade V aSAH have had good outcomes after aggressive treatment; however, outcome predictions based on routine …

jp (code pays fourni par la source)

Differences in gut microbiome between autosomal dominant polycystic kidney disease with and without intracranial aneurysms

Tatsumaru Fukuda, Masatoshi Takagaki, Jun‐Ya Kaimori, Daisuke Motooka et autres

Autosomal dominant polycystic kidney disease (ADPKD) is a genetic disorder characterized by cyst formation in the kidneys, and is associated with an elevated risk of intracranial aneurysms (IAs). Although a family history is a recognized risk factor for IAs in patients with …

jp (code pays fourni par la source)

Overheating-Dependent Heterogeneous Crystal Nucleation in a Lithium Disilicate Melt

Raschid Al-Mukadam, Tetsuya Murata, Shingo Nakane, Hiroki Yamazaki et autres

The influence of thermal history on the kinetics of liquid-solid transformations is investigated for heterogeneous crystal nucleation near the liquidus temperature in a melt with lithium disilicate composition in contact with a PtRh10 carrier. It is shown that the achieved undercooling depends …

de, jp (code pays fourni par la source)

Indentation stress fields in brittle materials: A micro-photoelastic investigation in silicate glasses

Gustavo Alberto Rosales-Sosa, Étienne Barthel, Yoshinari Kato, Matthieu Bourguignon et autres

jp, fr (code pays fourni par la source)

Sarcoid Neuropathy Presenting with Two Novel Ultrasound Findings of Increased Intraneural Blood Flow and Small Saphenous Vein Wall Thickening

Hiroki Yamazaki, Ryota Sato, Tomoyasu Matsubara, Naoko Takamatsu et autres

Diagnosing sarcoid neuropathy (SN) can be difficult because of its nonspecific symptoms and requirement for histological confirmation. We herein report a 71-year-old woman who presented with distal muscle weakness and paresthesia. Nerve conduction studies support the existence of polyneuropathy. Nerve ultrasonography revealed …

jp (code pays fourni par la source)

Indentation Stress Fields in Brittle Materials: A Micro-Photoelastic Investigation in Silicate Glasses

Gustavo Alberto Rosales-Sosa, Étienne Barthel, Yoshinari Kato, Matthieu Bourguignon et autres

jp, fr (code pays fourni par la source)

Increase in the amyotrophic lateral sclerosis age of onset:Analysis of cases originating in 2011-2020

Kenta Hanada, Shotaro Haji, Koji Fukushima, Hiroki Yamazaki et autres

The onset age of amyotrophic lateral sclerosis (ALS) has been increasing, but recent trends remain unclear. This study examined changes in ALS onset age over the past decade. We analyzed 233 ALS patients diagnosed from 2011 to 2020 at Tokushima University Hospital. …

jp (code pays fourni par la source)