Search results for: Hiroaki Yoshida

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article

Agarose Nanofiber by Electrospinning

Hiroaki Yoshida, Kiyonori Nagaoka, Hiroharu Ajiro

Macromolecular Chemistry and Physics > 225 > 18 > n/a - n/a

Agarose nanofiber with a diameter of 68 ± 33 nm is first prepared by electrospinning under an optimized condition of solvents with hexafluoroisopropanol/water (92.5/7.5, v/v). The results show the control of hydrogen bonding, which is important to prepare a nanoscale agarose material.

article

An Oxysulfide Photocatalyst Evolving Hydrogen with an Apparent Quantum Efficiency of 30 % under Visible Light

Hiroaki Yoshida, Zhenhua Pan, Ryota Shoji, Vikas Nandal, more

Angewandte Chemie International Edition > 62 > 46 > n/a - n/a

Photocatalytic water splitting is a simple means of converting solar energy into storable hydrogen energy. Narrow‐band gap oxysulfide photocatalysts have attracted much attention in this regard owing to the significant visible‐light absorption and relatively high stability of these compounds. However, existing materials suffer from low efficiencies due to difficulties in synthesizing these oxysulfides...

article

An Oxysulfide Photocatalyst Evolving Hydrogen with an Apparent Quantum Efficiency of 30 % under Visible Light

Hiroaki Yoshida, Zhenhua Pan, Ryota Shoji, Vikas Nandal, more

Angewandte Chemie > 135 > 46 > n/a - n/a

article

Validation study for in vitro skin irritation test using reconstructed human skin equivalents constructed by layer‐by‐layer cell coating technology

Takami Akagi, Tomomi Yamada, Hiromi Miyazaki, Hiroyuki Taguchi, more

Journal of Applied Toxicology > 43 > 6 > 874 - 886

The aim of this study is to validate an in vitro skin irritation test (SIT) using three‐dimensional reconstructed human epidermal (RhE) skin equivalents prepared by layer‐by‐layer (LbL) method (LbL‐3D Skin) in a series of interlaboratory studies. The goal of these validation studies is to evaluate the ability of this in vitro test to reliably discriminate skin irritant from nonirritant chemicals,...

article

Novel approach to recover copper ions using poly(ethylene imine) based layer‐by‐layer coatings on icosane particles

Steffen Seitz, Masaya Tsujimoto, Nalinthip Chanthaset, Hiroaki Yoshida, more

Journal of Applied Polymer Science > 138 > 15 > n/a - n/a

The low‐density materials are developed for the wastewater treatment, the particles could be easily recovered when floating upon water surface and be recycling of a large fraction. Simultaneously, we selected the low melting point of material, which is possible to separate easily the compounds after usage. We chose icosane as a core material with layer‐by‐layer (LbL) films as an adsorbent for wastewater...

article

Diagnostic usefulness of panoramic imaging of the pterygopalatine fossa: case of a schwannoma causing pterygopalatine fossa expansion

Shinya Kotaki, Shoko Gamoh, Hiroaki Yoshida, Chihoko Ikeda, more

Oral Radiology > 2019 > 35 > 3 > 321-325

The pterygopalatine fossa is a small area between the posterior wall of the maxillary sinus and the anterior surface of the pterygoid process of the sphenoid bone. The pterygopalatine fossa can be seen clearly on panoramic imaging. We present the case of a 57-year-old man who exhibited right pterygopalatine fossa expansion on panoramic imaging. Computed tomography (CT), magnetic resonance imaging...

article

Intracranial meningeal melanocytoma diagnosed using an interdisciplinary approach: a case report and review of the literature

Shoko Gamoh, Takaya Tsuno, Hironori Akiyama, Shinya Kotaki, more

Journal of Medical Case Reports > 2018 > 12 > 1 > 1-5

Background Meningeal melanocytoma is a rare pigmented tumor arising from leptomeningeal melanocytes. Patients with this tumor might initially consult a dentist because a mass lesion in Meckel’s cave could manifest as dental pain and malocclusion, thereby mimicking temporomandibular disorder. The diagnostic approach, especially using imaging modalities, would be challenging in such cases unless an...

article

Coarse-grained simulations of polyelectrolyte brushes using a hybrid model

Tomoyuki Kinjo, Hiroaki Yoshida, Hitoshi Washizu

Colloid and Polymer Science > 2018 > 296 > 3 > 441-449

We investigate the structure of polyelectrolyte brushes to determine the effects of the charge fraction of the polymers, grafting density, chain length, and salt concentration. A hybrid coarse-grained model is employed, where a soft potential is applied to coarse-grained particles representing the solvent, while a hard potential is used for the polymer beads, and co- and counterions. A steep increase...

article

Prediction of progression of damage to articular cartilage 2 years after anterior cruciate ligament reconstruction: use of aggrecan and type II collagen biomarkers in a retrospective observational study

Yasumori Sobue, Toshihisa Kojima, Kazutoshi Kurokouchi, Shigeo Takahashi, more

Arthritis Research & Therapy > 2017 > 19 > 1 > 1-9

Background We aimed to determine whether synovial fluid (SF) biomarkers can predict the progression of articular cartilage damage as determined by arthroscopic evaluation during and after anterior cruciate ligament (ACL) reconstruction. Methods Arthroscopic assessment of articular cartilage damage was performed twice in 62 patients, first during ACL reconstruction and then approximately 2 years...

chapter

Elixir: Effective object-oriented program repair

Ripon K. Saha, Yingjun Lyu, Hiroaki Yoshida, Mukul R. Prasad

2017 32nd IEEE/ACM International Conference on Automated Software Engineering (ASE) > 648 - 659

2017 32nd IEEE/ACM International Conference on Automated Software Engineering (ASE)

This work is motivated by the pervasive use of method invocations in object-oriented (OO) programs, and indeed their prevalence in patches of OO-program bugs. We propose a generate-and-validate repair technique, called ELIXIR designed to be able to generate such patches. ELIXIR aggressively uses method calls, on par with local variables, fields, or constants, to construct more expressive repair-expressions,...

article

Genome-wide microRNA expression profiling in placentae from frozen-thawed blastocyst transfer

Hitoshi Hiura, Hiromitsu Hattori, Norio Kobayashi, Hiroaki Okae, more

Clinical Epigenetics > 2017 > 9 > 1 > 1-12

Background Frozen-thawed embryo transfer (FET) is increasingly available for the improvement of the success rate of assisted reproductive technologies other than fresh embryo transfer (ET). There have been numerous findings that FET provides better obstetric and perinatal outcomes. However, the birth weight of infants conceived using FET is heavier than that of those conceived via ET. In addition,...

article

Fluctuations of Marchenko–Pastur limit of random matrices with dependent entries

Ayako Hasegawa, Noriyoshi Sakuma, Hiroaki Yoshida

Statistics & Probability Letters > 2017 > 127 > C > 85-96

Pfaffel and Schlemm have investigated the sample covariance matrix with dependent entries motivated from moving average. Our former paper gave free probabilistic interpretation of it. In this paper, we suggest a new statistical hypothesis testing to coefficients of the moving average model using real second order freeness, which describes fluctuations of its almost sure limiting distribution.

article

Painless exophytic mass of the anterior maxillary gingiva—Report of extremely rare case of peripheral dentinogenic ghost cell tumor and review the literature

Kaname Tsuji, Norihiro Yasuda, Mamoru Ueda, Tamaki Nakanishi, more

Journal of Oral and Maxillofacial Surgery, Medicine, and Pathology > 2017 > 29 > 4 > 321-323

We report a case of peripheral dentinogenic ghost cell tumor (DGCT) containing radiopacity mass in the left anterior maxillary region. A 69-year-old woman was referred to our hospital because of a painless exophytic mass measuring 18×14×10mm in the anterior maxillary gingiva. Radiographic examination showed a well-circumscribed, compressed, radiolucent lesion on the underlying bone, with a radiopaque...

article

A case of maxillary odontogenic myxoma with tuberous sclerosis

Tamaki Nakanishi, Hiroaki Yoshida, Mamoru Ueda, Kaori Naruse, more

Journal of Oral and Maxillofacial Surgery, Medicine, and Pathology > 2017 > 29 > 3 > 225-229

Odontogenic myxoma (OM) is a relatively rare benign tumor of mesenchymal origin. It is characterized by slowly-growing, locally aggressive, and non-metastasizing neoplasms of the jaw bone. Tuberous sclerosis complex (TSC) develops as an abnormal growth of ectodermal and mesodermal cells, producing benign tumors that extend to areas of the head, heart, brain, and kidneys. The syndrome of tuberous sclerosis...

article

KLOVER: Automatic Test Generation for C and C Programs, Using Symbolic Execution

Hiroaki Yoshida, Guodong Li, Takuki Kamiya, Indradeep Ghosh, more

IEEE Software > 2017 > 34 > 5 > 30 - 37

Fujitsu researchers have developed a methodology to automate testing of industrial-strength embedded software implemented in C or C++. The methodology’s core is a program analysis technique called symbolic execution, which the researchers have customized to automate testing. The methodology generates unit-level tests, greatly reducing test generation time and cost while providing excellent test coverage.

chapter

Human identification from brain EEG signals using advanced machine learning method EEG-based biometrics

Md. Khayrul Bashar, Ishio Chiaki, Hiroaki Yoshida

2016 IEEE EMBS Conference on Biomedical Engineering and Sciences (IECBES) > 475 - 479

2016 IEEE EMBS Conference on Biomedical Engineering and Sciences (IECBES)

EEG-based human recognition is increasingly becoming a popular modality for biometric authentication. Two important features of EEG signals are liveliness and the robustness against falsification. However, a comprehensive study on human authentication using EEG signal is still remains. On the other hand, low-cost wireless EEG recording devices are now growing in the market places. Although these devices...

chapter

Epileptic seizure classification from intracranial EEG signals: A comparative study EEG-based seizure classification

Md. Khayrul Bashar, Faruque Reza, Zamzuri Idris, Hiroaki Yoshida

2016 IEEE EMBS Conference on Biomedical Engineering and Sciences (IECBES) > 96 - 101

2016 IEEE EMBS Conference on Biomedical Engineering and Sciences (IECBES)

Epilepsy is a neurological disorder of the brain, characterized by recurrent seizures, i.e., unusual behaviors. Electroencephalogram (EEG) is a test that measures and records the electrical activity of the brain, and is widely used in the detection and analysis of epileptic seizures. However, it is often difficult to identify critical changes in the EEG waveform by visual inspection, thus opening...

article

Evaluation of environmental change in the mouth with the use of spray-type oral moisturizer containing γ-PGA

Shoichi Yamamoto, Hiroaki Yoshida, Tadashi Ohkubo, Hirohumi Sawai, more

Journal of Oral and Maxillofacial Surgery, Medicine, and Pathology > 2016 > 28 > 5 > 446-449

This study was to evaluate the effect of new spray-type oral moisturizer containing poly-γ-glutamic acid (γ-PGA). γ-PGA can be classified as a pseudopolyamino acid, which contains only repeated glutamate units. The hygroscopic and moisturizing effects of γ-PGA were compared with HA. Cross-linked γ-PGA could absorb thousands of times more water than its own weight.102 volunteers were randomly allocated...

article

A rare case of postoperative malocclusion with severe joint effusion due to mouth opening rehabilitation exercise after surgical correction of masticatory muscle tendon-aponeurosis hyperplasia

Hiroaki Yoshida, Kazuya Matsuse, Tamaki Nakanishi, Kaname Tsuji, more

Journal of Oral and Maxillofacial Surgery, Medicine, and Pathology > 2016 > 28 > 4 > 319-323

We reported a case of postoperative malocclusion with severe joint effusion due to mouth opening rehabilitation exercise after surgical correction of masticatory muscle tendon-aponeurosis hyperplasia (MMTAH). A 39-year-old female with gradually progressive trismus had been diagnosed with MMTAH. Panoramic imaging showed bilateral elongation of the coronoid process, square mandible with hyperplasia...

chapter

MuVM: Higher Order Mutation Analysis Virtual Machine for C

Susumu Tokumoto, Hiroaki Yoshida, Kazunori Sakamoto, Shinichi Honiden

2016 IEEE International Conference on Software Testing, Verification and Validation (ICST) > 320 - 329

2016 IEEE International Conference on Software Testing, Verification and Validation (ICST)

Mutation analysis is a method for evaluating the effectiveness of a test suiteby seeding faults artificially and measuringthe fraction of seeded faults detected by the test suite. The major limitation of mutation analysis is its lengthy execution time because it involves generating, compiling andrunning large numbers of mutated programs, called mutants. Our tool MuVM achieves a significant runtime...

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INFONA - science communication portal

Search results for: Hiroaki Yoshida

Agarose Nanofiber by Electrospinning

An Oxysulfide Photocatalyst Evolving Hydrogen with an Apparent Quantum Efficiency of 30 % under Visible Light

An Oxysulfide Photocatalyst Evolving Hydrogen with an Apparent Quantum Efficiency of 30 % under Visible Light

Validation study for in vitro skin irritation test using reconstructed human skin equivalents constructed by layer‐by‐layer cell coating technology

Novel approach to recover copper ions using poly(ethylene imine) based layer‐by‐layer coatings on icosane particles

Diagnostic usefulness of panoramic imaging of the pterygopalatine fossa: case of a schwannoma causing pterygopalatine fossa expansion

Intracranial meningeal melanocytoma diagnosed using an interdisciplinary approach: a case report and review of the literature

Coarse-grained simulations of polyelectrolyte brushes using a hybrid model

Prediction of progression of damage to articular cartilage 2 years after anterior cruciate ligament reconstruction: use of aggrecan and type II collagen biomarkers in a retrospective observational study

Elixir: Effective object-oriented program repair

Genome-wide microRNA expression profiling in placentae from frozen-thawed blastocyst transfer

Fluctuations of Marchenko–Pastur limit of random matrices with dependent entries

Painless exophytic mass of the anterior maxillary gingiva—Report of extremely rare case of peripheral dentinogenic ghost cell tumor and review the literature

A case of maxillary odontogenic myxoma with tuberous sclerosis

KLOVER: Automatic Test Generation for C and C Programs, Using Symbolic Execution

Human identification from brain EEG signals using advanced machine learning method EEG-based biometrics

Epileptic seizure classification from intracranial EEG signals: A comparative study EEG-based seizure classification

Evaluation of environmental change in the mouth with the use of spray-type oral moisturizer containing γ-PGA

A rare case of postoperative malocclusion with severe joint effusion due to mouth opening rehabilitation exercise after surgical correction of masticatory muscle tendon-aponeurosis hyperplasia

MuVM: Higher Order Mutation Analysis Virtual Machine for C

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