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Emulsion Graft Polymerization of Methyl Methacrylate onto Cellulose Nanofibers

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Green and Sustainable Chemistry 2021年第1期11卷 9-22页

作者： hiromu Okada Chao Zhao Yusuke Mizuta Katsumi Yoshino Ryuichi Sugimoto School of Environmental Science and Engineering Kochi University of Technology Kochi Japan Shimane Institute for Industrial Technology Matsue Japan

Methyl methacrylate (MMA) was successfully grafted onto cellulose nanofibers (CNFs) at room temperature in an emulsion system using a diethyl(1,10-phenanthroline N1,N10)zinc(II) complex (Phen-DEZ) with oxygen as the radical initiator. The effects of reaction temperature, initiator concentration, and monomer content on the grafting reaction were investigated. The molecular weight of the non-grafted PMMA, which was produced during graft polymerization, was more than 1 million, as determined by size exclusion chromatography. The PMMA-grafted CNFs were analyzed by Fourier transform infrared spectroscopy, thermogravimetric analysis, and scanning electron microscopy, which confirmed the grafting of PMMA on the nanofiber surface. The study presents a strategy for the grafting of high-molecular weight PMMA onto CNFs in an emulsion system using Phen-DEZ and O2.

关键词： Cellulose Nanofibers Graft Polymerization Methyl Methacrylate Emulsion Diethylzinc

Fabrication and Characterization of a Lead Zirconate Titanate Micro Energy Harvester Based on Eutectic Bonding

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Chinese Physics Letters 2011年第6期28卷 322-325页

作者： LI Yi-Gui SUN Jian YANG Chun-Sheng LIU Jing-Quan sugiyama Susumu TANAKA Katsuhiko Institute of Key Laboratory for Thin Film and Microfabrication Technology(Ministry of Education) Research Institute of Micro/Nano Science and TechnologyShanghai Jiao Tong UniversityShanghai 200240 Global Innovation Research Center Ritsumeikan UniversityKusatsuShiga 525-8577Japan

A lead zirconate titanate(PZT)-Si energy harvester cantilever with PZT bulk ceramics is fabricated by eutectic bonding,polishing and dicing *** feasibility of this process is studied using a successful operation of the cantilever in both actuation and harvesting *** first prototype made from a PZT-Au-Si cantiliever is *** testing results show the voltage output of 632 mV at the frequency of 815 Hz when the excitation acceleration is 0.5 *** PZT and silicon layers are bonded together to form a sandwiched structure using a gold layer as an intermediate layer.

关键词： eutectic cantilever ceramics

Boosting and margin theory

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Frontiers of Electrical and Electronic Engineering in China 2012年第1期7卷 127-133页

作者： Jufu FENG Liwei WANG Masashi sugiyama Cheng YANG Zhi-Hua ZHOU Chicheng ZHANG Key Laboratory of Machine Perception MOE School of Electron- ics Engineering and Computer Science Peking University Beijing 100871 China Department of Computer Science Tokyo Institute of TechnologyTokyo 152-8552 Japan National Key Laboratory for Novel Software Technology NanjingUniversity Nanjing 210093 China

Many researchers have worked on the ex- planation of AdaBoost＇s good experimental results in theory. Some work give an upper bound of generaliza- tion error in terms of the margin distribution function, while Breiman gave a sharper generalization error bound based on minimum margin. He also developed the arc- gv algorithm to maximize the minimum margin, then made the minimum margin larger than AdaBoost. How- ever, its empirical results are even worse than AdaBoost. Therefore, is the minimum margin bound not practi- cal？ This paper gives a new concept called Equilibrium margin （Emargin） and proves a new generalization er- ror bound using Emargin, which is always better than minimum margin bound. In addition, we show Emargin is a good indicator of generalization. Then, we conduct experiments showing that the Emargin of AdaBoost is larger than arc-gv, but the generalization error of Ada- Boost is usually better.

关键词： boosting margin explanation generalization

A Survey of Learning Needs about Oral Care for Intubated Patients among New Nursing Staff

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Open Journal of Nursing 2020年第4期10卷 462-471页

作者： Fumino sugiyama Tomoko Inoue National College of Nursing Tokyo Japan

Our aim was to understand the actual conditions of oral care for intubated patients by new nurses. This study was carried out from December 2017 to March 2018. We applied the theme of the dissipation of the dissociation between nursing skills learned in basic nursing education and nursing skills required in practice. A questionnaire survey was conducted at four facilities among new nursing staff who had acquired their nursing license in the past year. The questionnaire was composed of questions about their experiences of oral care for intubated patients, when they learned these skills, and what they wanted to learn. Answers were obtained from 118 new nurses. Learning about oral care was important for approximately 20% of the nurses, although it was not considered mandatory by all of the nurses. As infection control measures have revealed the acute needs of care for intubated patients, it is important for nursing students to learn about oral care and attitudes towards intubated patients, along with methods to make intubated patients more comfortable.

关键词： New Nurses Basic Nursing Education Ventilator-Associated Pneumonia Oral Care

Crystallization Behavior of Polypropylene Induced by Cyclodextrin-polyolefin Inclusion Compounds

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Crystallization Behavior of Polypropylene Induced by Cyclode...

Air Trapping: A Cause of Heterogeneous Attenuation

5th International Symposium on High-Tech Polymer Materials

作者： Naoe Isshiki hiromu Saito Akinori Toyota Graduate School of Engineering Tokyo University of Agriculture and Technology2-24-16 Naka-choKoganei-shiTokyo 184-8588Japan

＜正＞In recent years,inclusion compounds（ICs）formed by cyclodextrin（CD）and high molecular polymer have attracted much attention in polymer science,owing to their unique supramolecular structure and specific *** formation and properties of CD ICs with various polymers have been studied extensively to improve miscibility,biodegradability, and crystallization of polymers.

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Open Journal of Radiology 2012年第3期2卷 96-103页

作者： Keiko Morikawa Fumito Okada Yumiko Ando Asami Ono hiromu Mori Department of Radiology Faculty of Medicine Oita University Yufu Japan

Purpose: To investigate important factors affecting the frequency of air trapping through observation of normal lung attenuation, and propose a cause of heterogeneous attenuation. Materials and Methods: In this ethical committee-approved study, a total of 109 patients (30 males, 79 females;mean age, 58.2 years;range, 27 - 81 years) were included. All patients had undergone inspiratory and expiratory chest thin-section computed tomography (CT) examinations and pulmonary function tests. Air trapping on CT images was graded subjectively. Hounsfield units (HU) lung attenuation value and lung volume were measured on CT images. All variables (age, sex, indices of pulmonary function test results, air trapping score, HU value, and rate of change in lung volume) were compared by diagnoses and air trap- ping findings cohorts. The correlation between lung function test results and expiratory HU attenuation were analyzed. Results: Interstitial pneumonia showed higher and bronchiolitis obliterans showed lower HU attenuation at normal and air trapping regions. The variables affecting air trapping findings were age, a ratio of forced expiratory volume in 1 second to forced vital capacity (FEV1.0/FVC), maximal expiratory flow at 50% of forced vital capacity (MEF50), HU attenuation at normal regions, and rate of change in lung volume. Compared with expiratory HU attenuation, significant positive correlation was shown to FEV1.0/FVC and negative correlation to single-breath diffusion capacity for carbon monoxide, which was confirmed by a simple regression analysis. Conclusion: It can be suggested that lung attenuation can increase when fibrosis is advanced, and this is exaggerated when lungs are compressed.

关键词： Air Trapping CT Examination Lung Attenuation

Anticancer effect of linalool via cancer-specific hydroxyl radical generation in human colon cancer

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World Journal of Gastroenterology 2016年第44期22卷 9765-9774页

作者： Kenichi Iwasaki Yun-Wen Zheng Soichiro Murata hiromu Ito Ken Nakayama Tomohiro Kurokawa Naoki Sano Takeshi Nowatari Myra O Villareal Yumiko N Nagano Hiroko Isoda Hirofumi Matsui Nobuhiro Ohkohchi Department of Surgery and Organ Transplantation Faculty of Medicine University of Tsukuba Regenerative Medicine Research Center Jiangsu University Hospital Department of Regenerative Medicine Graduate School of Medicine Yokohama City University Department of Gastroenterology Faculty of Medicine University of Tsukuba Faculty of Life and Environmental Sciences Alliance of Research on North Africa University of Tsukuba

AIM To investigate the anticancer mechanisms of the monoterpenoid alcohol linalool in human colon cancer *** The cytotoxic effect of linalool on the human colon cancer cell lines and a human fibroblast cell line was examined using the WST-8 assay. The apoptosisinducing effect of linalool was measured using the terminal deoxynucleotidyl transferase d UTP nickend labeling assay and flow cytometry with Annexin V. Oxidative stress was investigated by staining for diphenyl-1-pyrenylphosphine, which is a cellular lipid peroxidation marker, and electron spin resonance spectroscopy. Sixteen SCID mice xenografted with human cancer cells were randomized into 3 groups for in vivo analysis: control and low-dose and high-dose linalool groups. The control group was administered tap water orally every 3 d. The linalool treatment groups were administered 100 or 200 μg/kg linalool solution orally for the same period. All mice were sacrificed under anesthesia 21 d after tumor inoculation, and tumors and organs were collected for immunohistochemistry using an anti-4-hydroxynonenal antibody. Tumor weights were measured and compared between groups. RESULTS Linalool induced apoptosis of cancer cells in vitro, following the cancer-specific induction of oxidative stress, which was measured based on spontaneous hydroxyl radical production and delayed lipid peroxidation. Mice in the high-dose linalool group exhibited a 55% reduction in mean xenograft tumor weight compared with mice in the control group(P < 0.05). In addition, tumor-specific lipid peroxidation was observed in the in vivo *** Linalool exhibited an anticancer effect via cancerspecific oxidative stress, and this agent has potential for application in colon cancer therapy.

关键词： Colorectal cancer Linalool Oxidative stress Electron spin resonance Lipid peroxidation

Chemical Biology that Controls DNA Structure and Function:DNA Origami and Artificial Genetic Switch

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Chemical Biology that Controls DNA Structure and Function:DN...

Design of Pyrrole-Imidazole Polyamides Discriminating T/A

第八届全国化学生物学学术会议

作者： Hiroshi sugiyama Department of Chemistry Graduate School of Science Institute for Integrated Cell-Material Sciences（iCeMS）Kyoto University

＜正＞Fifty years after the discovery of the double-helical structure of DNA,the complete sequence of the human genome has been *** diseases, including cancer,hereditary,and viral diseases,can now be understood at the DNA sequence ***,it has been revealed that epigenetic modification plays an important role in gene expression,which controls the gene expression through DNA methylation and histone *** is closely related to the cell reprogramming and differentiation.

关键词： DNA origami DNA nanotechnology Artificial Genetic Switch Epigenetics

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Design of Pyrrole-Imidazole Polyamides Discriminating T/A