A5088820793- Polymer crystallization and properties
- Material Dynamics and Properties
- Polymer Nanocomposites and Properties
- Rheology and Fluid Dynamics Studies
- biodegradable polymer synthesis and properties
- Phase Equilibria and Thermodynamics
- Food Chemistry and Fat Analysis
- Proteins in Food Systems
- Crystallization and Solubility Studies
- Pancreatitis Pathology and Treatment
- Cholangiocarcinoma and Gallbladder Cancer Studies
- Chemical Thermodynamics and Molecular Structure
- Pancreatic and Hepatic Oncology Research
- Polymer Foaming and Composites
- Microplastics and Plastic Pollution
- Pediatric Hepatobiliary Diseases and Treatments
- Metal Forming Simulation Techniques
- Liver Disease Diagnosis and Treatment
- Advanced X-ray Imaging Techniques
- Enzyme Structure and Function
- Metallurgy and Material Forming
- Material Properties and Processing
- Bone and Dental Protein Studies
- Liquid Crystal Research Advancements
- Thermal and Kinetic Analysis
Hiroshima University
2012-2024
Kyoto University
1999-2008
Fudan University
2008
University of Toronto
2008
Hamanomachi Hospital
2008
Kyushu University
2000-2008
National Hospital Organization Kyushu Cancer Center
2005-2008
Huashan Hospital
2008
Nashville Oncology Associates
2008
University Health Network
2008
Because of twisting correlation crystallites along the radial direction, polyethylene spherulites are known to develop concentric band pattern. The mechanism branching and reorientation lamellar in banded has been examined experimentally by optical atomic force microscopies associated with quenching chemical etching. microscopic observation suggests a instability crystals at growth front spherulite. We propose consecutive branches regulated inherent torsional stress expected for instability....
Microsatellite instability (MSI) is associated with defective DNA mismatch repair in various human malignancies. Using a unique fluorescent technique, we have observed two distinct modes of dinucleotide microsatellite alterations colorectal cancer. Type A are defined as length changes ≤6 bp. B more drastic and involve modifications ≥8 We show here that necessary sufficient for changes. These were cell lines tumours from gene-knockout mice. No was seen these cells or tumours. In panel...
The mechanism of instability-driven branching lamellar crystallites in the formation polymer spherulites has been examined experimentally for polyethylene-banded terms molecular weight dependence by optical and atomic force microscopies associated with quenching chemical etching. possibility suggested experimental results our previous work temperature dependences band spacing, width at growth front, rate. examination on average distribution weights enables us to differentiate possible...
We investigate the phase-transition behavior of ionic liquid crystals, namely 1-methyl-3-alkylimidazolium tetrafluoroborate, [Cnmim]BF4, confined in cylindrical nanopores using differential scanning calorimetry, x-ray scattering, and dielectric relaxation spectroscopy. Here, n is number carbon atoms alkyl part this crystal. For = 10 12, isotropic phase changes to smectic then a metastable for cooling process. During subsequent heating process, via crystalline phases. The transition...
Abstract The film thickness dependence of crystal growth is investigated for isotactic polystyrene (it-PS) in thin films thicknesses from 20 down to 4 nm. single crystals it-PS grown at 180°C the ultrathin show a morphology typical diffusion-controlled growth: dense branching and fractal seaweed. characteristic length morphology, i.e., width branch, increases with decreasing thickness. rate shows crossover around lamellar 8 dependences are discussed terms diffusion chain molecules films....
Aims : To identify the role of mucus core protein (MUC) in intrahepatic cholangiocarcinoma (ICC). Methods and results We examined expression profile MUC2, MUC5AC MUC6 by immunohistochemical staining 100 ICCs compared clinicopathological factors results. The frequency was: 9%; MUC5AC, 40%; MUC6, 21%. According to gastric mucin profile, were classified into following groups: null type ( n = 43), foveolar 36), pyloric gland 11) combined 10). Half located hilar region, but other types...
The growth rate and morphology of isotactic polystyrene crystals grown in ultrathin films have been examined experimentally terms the dependences both on film thickness crystallization temperature. We found that dependence rate, G, shows a crossover change when becomes comparable with lamellar polymer crystals, irrespective temperatures. branching typical dendrites, which is supposed to be controlled by diffusion field. tip width dendrites temperature follows expected Mullins–Sekerka...
Based on our recent proposal for the formation mechanism of polymer spherulites, correlation between morphology and crystallization kinetics has been examined it-polystyrene (itPS) spherulites grown from melt down to temperatures near glass transition, Tg. The inner structure nonbanded itPS characterized by persistence length patchy pattern observed polarizing optical microscopy. was in proportion width lamellar crystals at growth front, which atomic force result reconfirms suggestion that...
Crystallization and melting behaviors of polyethylene (PE) crystals were examined by fast-scan chip sensor calorimetry (FSC) small-angle X-ray scattering (SAXS). The point TM chain-folded thin lamellar PE was determined utilizing FSC the crystalline thickness dc SAXS. range crystallization temperature Tc from SAXS as well extended much more broadly than before examining those samples prepared on a applying deep jump for at large supercooling ΔTc. While equilibrium TM0 reconfirmed with linear...
In order to clarify the formation mechanism of polymer spherulites, we have experimentally examined effect externally applied gradient field temperature on structural evolution crystallization, especially characteristic length scales inner structures nonbanded crystallization isotactic poly(butene-1) and banded poly(vinylidene fluoride) polyethylene. The were strongly influenced by suggested important role temperature, i.e., chemical potential in general, at growth front bulk melt. results...
The isothermal crystallization from the melt state of syndiotactic polypropylene (sPP) has been studied by wide-angle X-ray diffraction (WAXD), small-angle scattering (SAXS), and optical microscopy. WAXD SAXS results show mechanism near glass transition temperature in which crystalline mesomorphic nodules cover entire sample with formation aggregation regions. For analysis, function for three-component system suggested. Furthermore, to analyze growth kinetics region sPP, time-dependent...
Fat-based soft materials generally contain different triacylglycerol (TAG) species; hence, TAG mixtures' phase behaviors determine their important physical properties. binary mixtures typically exhibit eutectic, monotectic, solid solution, and molecular compound (MC) forming phases; among them, the interactions crystallization kinetics controlling formation processes of MC-phases remain unexplored. We used thermal analysis, X-ray diffraction, optical microscopy to examine transformation...
Crystallization of it-polybutene-1 (iPB-1) in form 2 from thin films several tens nanometers thick evolves a cellular structure composed single-layered lamellar crystals. The dependences on thickness and crystallization temperature the structure, namely cell width corresponding to width, have been examined quantitatively. Temperature dependence well agrees with crystals grown bulk melt, for same order magnitude as long spacing crystal-melt stacks melt. is self-evidently controlled by mass...