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Mechanochemical Synthesis of Visible-light Induced Photocatalyst with Nitrogen and Carbon Doping

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过程工程学报 2006年第3期6卷 477-481页

作者：殷澍 Maskazu komatsu 张其武李锐星唐清 Fumio Saito Tsugio Sato Inst. Multidisciplinary Research for Advanced Materials Tohoku Univ.2-1-1KatahiraAoba-kuSendaiMiyagi 980-8577Japan

Nitrogen and/or carbon doped titania photocatalysts were prepared by a novel mechanochemical method. The prepared powders possessed two absorption edges around 400 and 540 nm wavelengths and showed excellent photocatalytic ability for nitrogen monoxide oxidation under visible light irradiation. Under the irradiation of visible light of wavelength >510 nm,37% of nitrogen monoxide could be continuously removed by the carbon and nitrogen co-doped titania prepared by planetary ball milling of P-25 titania–10% hexamethylenetetramine mixture followed by calcination in air at 400-C.

关键词： mechanochemical synthesis titania photocatalyst carbon and nitrogen doping nitrogen monoxide oxidation

Effects of slope gradient on runoff from bare-fallow purple soil in China under natural rainfall conditions

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Journal of Mountain Science 2018年第4期15卷 738-751页

作者： komatsu Yoshitaka KATO Hiroaki ZHU Bo WANG Tao YANG Fan RAKWAL Randeep ONDA Yuichi Graduate School of Life and Environmental Sciences University of Tsukuba Center for Research in Isotopes and Environmental Dynamics University of Tsukuba Institute of Mountain Hazards and Environment Chinese Academy of Sciences Faculty of Health and Sport Sciences University of Tsukuba

Purple soil is highly susceptible for overland flow and surface erosion, therefore understanding surface runoff and soil erosion processes in the purple soil region are important to mitigate flooding and erosion hazards. Slope angle is an important parameter that affects the magnitude of runoff and thus surface erosion in hilly landscapes or bare land area. However, the effect of slope on runoff generation remains unclear in many different soils including Chinese purple soil. The aim of this study was to investigate the relationship between different slope gradients and surface runoff for bare-fallow purple soil, using 5 m × 1.5 m experimental plots under natural rainfall conditions. Four experimental plots(10°, 16°, 20° and 26°) were established in theYanting Agro-ecological Experimental Station of Chinese Academy of Science in central Sichuan Basin. The plot was equipped with water storage tank to monitor water level change. Field monitoring from July 1 to October 31, 2012 observed 42 rainfall events which produced surface runoff from the experimental plots. These water level changes were converted to runoff. The representative eight rainfall events were selected for further analysis, the relationship between slope and runoff coefficient were determined using ANOVA, F-test, and z-score analysis. The results indicated a strong correlation between rainfall and runoff in cumulative amount basis. The mean value of the measured runoff coefficient for four experimental plots was around 0.1. However, no statistically significant relationship was found between slope and runoff coefficient. We reviewed the relationship between slope and runoff in many previous studiesand calculated z-score to compare with our experimental results. The results of z-score analysis indicated that both positive and negative effects of slope on runoff coefficient were obtained, however a moderate gradient(16°-20° in this study) could be a threshold of runoff generation for many different soils

关键词： Surface runoff Slope gradient Natural rainfall Purple soil Runoff plot

Is the magic texture of Majorana neutrinos immanent in Dirac nature?

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Chinese Physics C 2023年第4期47卷 66-73页

作者： Yuta Hyodo teruyuki Kitabayashi Graduate School of Science and Technology Tokai University4-1-1 KitakanameHiratsukaKanagawa 259-1292Japan Department of Physics Tokai University4-1-1 KitakanameHiratsukaKanagawa 259-1292Japan

Magic textures are successful candidates of the correct texture for Majorana *** this study,we demonstrate that several types of magic textures of Majorana neutrinos are approximately immanent in the flavor mass matrix of Dirac *** addition,the normal mass ordering of Dirac neutrino masses is slightly preferable to inverted mass ordering in the context of magic textures.

关键词： neutrino mixing mass matrix magic texture

Current status, problems, and perspectives of non-alcoholic fatty liver disease research

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World Journal of Gastroenterology 2019年第2期25卷 163-177页

作者： Naoki Tanaka Takefumi Kimura Naoyuki Fujimori Tadanobu Nagaya Michiharu komatsu Eiji Tanaka Department of Metabolic Regulation Shinshu University School of Medicine International Research Center for Agricultural Food Industry Shinshu University Department of Internal Medicine Shinshu University School of Medicine

Non-alcoholic fatty liver disease(NAFLD) is a major chronic liver disease that can lead to liver cirrhosis, liver cancer, and ultimately death. NAFLD is pathologically classified as non-alcoholic fatty liver(NAFL) or non-alcoholic steatohepatitis(NASH) based on the existence of ballooned hepatocytes,although the states have been known to transform into each other. Moreover,since the detection of ballooned hepatocytes may be difficult with limited biopsied specimens, its clinical significance needs reconsideration. Repeated liver biopsy to assess histological NAFLD activity for therapeutic response is also impractical, creating the need for body fluid biomarkers and less invasive imaging modalities. Recent longitudinal observational studies have emphasized the importance of advanced fibrosis as a determinant of NAFLD outcome. Thus,identifying predictors of fibrosis progression and developing better screening methods will enable clinicians to isolate high-risk NAFLD patients requiring early intensive intervention. Despite the considerable heterogeneity of NAFLD with regard to underlying disease, patient age, and fibrosis stage, several clinical trials are underway to develop a first-in-class drug. In this review, we summarize the present status and future direction of NAFLD/NASH research towards solving unmet medical needs.

关键词： Non-alcoholic steatohepatitis Fibrosis Steatosis Ballooning Biomarker Outcome Treatment

Liquid biopsy of gastric cancer patients:Circulating tumor cells and cell-free nucleic acids

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World Journal of Gastroenterology 2014年第12期20卷 3265-3286页

作者： Masahiro Tsujiura Daisuke Ichikawa Hirotaka Konishi Shuhei komatsu Atsushi Shiozaki Eigo Otsuji Division of Digestive Surgery Department of SurgeryKyoto Prefectural University of Medicine

To improve the clinical outcomes of cancer patients, early detection and accurate monitoring of diseases are necessary. Numerous genetic and epigenetic alterations contribute to oncogenesis and cancer progression, and analyses of these changes have been increasingly utilized for diagnostic, prognostic and therapeutic purposes in malignant diseases including gastric cancer (GC). Surgical and/or biopsy specimens are generally used to understand the tumor-associated alterations; however, those approaches cannot always be performed because of their invasive characteristics and may fail to reflect current tumor dynamics and drug sensitivities, which may change during the therapeutic process. Therefore, the importance of developing a non-invasive biomarker with the ability to monitor real-time tumor dynamics should be emphasized. This concept, so called “liquid biopsy”, would provide an ideal therapeutic strategy for an individual cancer patient and would facilitate the development of “tailor-made” cancer management programs. In the blood of cancer patients, the presence and potent utilities of circulating tumor cells (CTCs) and cell-free nucleic acids (cfNAs) such as DNA, mRNA and microRNA have been recognized, and their clinical relevance is attracting considerable attention. In this review, we discuss recent developments in this research field as well as the relevance and future perspectives of CTCs and cfNAs in cancer patients, especially focusing on GC.

关键词： Gastric cancer Biomarker Liquid biopsy Circulating tumor cells Cell-free nucleic acids MicroRNA

Real impact of tumor marker AFP and PIVKA-II in detecting very small hepatocellular carcinoma(≤2 cm,Barcelona stage 0)-assessment with large number of cases

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World Journal of Hepatology 2020年第11期12卷 1046-1054页

作者： Kazuo Tarao Akito Nozaki Hirokazu komatsu Tatsuji komatsu Masataka Taguri Katsuaki Tanaka Makoto Chuma Kazushi Numata Shin Maeda Department of Gastroenterology Tarao’s Gastroenterological ClinicYokohama 241-0821Japan Gastroenterological Center Yokohama City University Medical CenterYokohama 232-0024Japan Department of Gastroenterology Yokohama Municipal Citizen’s HospitalYokohama 221-0855Japan Department of Clinical Research National Hospital Organization Yokohama Medical CenterYokohama 245-8575Japan Department of Data Science Yokohama City University School of Data ScienceYokohama 236-0004Japan Department of Gastroenterology Hadano Red Cross HospitalKanagawa 221-0045Japan Department of Gastroenterology Yokohama City University Graduate School of MedicineYokohama 236-0004Japan

BACKGROUND In hepatocellular carcinoma(HCC),detection and treatment prior to growth beyond 2 cm are relevant as a larger tumor size is more frequently associated with microvascular invasion and/or *** To examine the impact of the tumor marker alpha-fetoprotein(AFP)or PIVKA-II in detecting very small HCC nodules(≤2 cm in maximum diameter,Barcelona stage 0)in the large number of very small *** difference in the behavior of these tumor markers in HCC development was also *** A total of 933 patients with single-nodule HCC were *** were subdivided into 394 patients with HCC nodules≤2 cm in maximum diameter and 539 patients whose nodules were>2 *** rates of patients whose AFP and PIVKA-II showed normal values were *** The positive ratio of the marker PIVKA-II was significantly different(P2 cm,but there was no significant difference in AFP(P=0.4254).In the patients whose tumor was≤2 cm,50.5%showed normal levels in AFP and 68.8%showed normal levels in *** 36.4%of those patients,both AFP and PIVKA-II showed normal *** PIVKA-II-positive ratio was markedly increased with an increase in the tumor *** contrast,the positivity in AFP was increased gradually and *** In the surveillance of very small HCC nodules(≤2 cm in diameter,Barcelona clinical stage 0)the tumor markers AFP and PIVKA-II are not so useful.

关键词： Hepatocellular carcinoma AFP PIVKA-II Barcelona clinical stage Tumor markers

Prediction of fuel cell performance degradation using a combined approach of machine learning and impedance spectroscopy

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Journal of Energy Chemistry 2023年第12期87卷 32-41,I0003页

作者： Zewei Lyu Yige Wang Anna Sciazko Hangyue Li Yosuke komatsu Zaihong Sun Kaihua Sun Naoki Shikazono Minfang Han Institute of Industrial Science The University of TokyoTokyo 153-8505Japan Department of Energy and Power Engineering Tsinghua UniversityBeijing 100084China Xuzhou Huatsing Jingkun Energy Co. Ltd.Xuzhou 221005JiangsuChina

Accurate prediction of performance degradation in complex systems such as solid oxide fuel cells is crucial for expediting technological ***,significant challenges still persist due to limited comprehension of degradation mechanisms and difficulties in acquiring in-situ *** this study,we propose an effective approach that integrates long short-term memory(LSTM) neural network and dynamic electrochemical impedance spectroscopy(DEIS).This integrated approach enables precise prediction of future evolutions in both current-voltage and EIS features using historical testing data,without prior knowledge of degradation *** short-term predictions spanning hundreds of hours,our approach achieves a prediction accuracy exceeding 0.99,showcasing promising prospects for diagnostic ***,for long-term predictions spanning thousands of hours,we quantitatively determine the significance of each degradation mechanism,which is crucial for enhancing cell ***,our proposed approach demonstrates satisfactory predictive ability in both time and frequency domains,offering the potential to reduce EIS testing time by more than half.

关键词： Solid oxide fuel cell Performance degradation Electrochemical impedance spectroscopy Longshort-term memory Machine learning

Efficacy and safety of dual therapy with daclatasvir and asunaprevir in elderly patients

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World Journal of Hepatology 2017年第11期9卷 544-550页

作者： Kazuo Tarao Katsuaki Tanaka Akito Nozaki Akira Sato Toshiya Ishii Hirokazu komatsu Takaaki Ikeda Tatsuji komatsu Shozo Matsushima Kenji Oshige Tarao’s Gastroenterological Clinic Gastroenterological Center Medical Center Yokohama City University Division of Gastroenterology Department of Internal Medicine St. Marianna University Yokohama City Seibu Hospital Department of Gastroenterology Yokohama Municipal Citizen’s Hospital Department of Gastroenterology Yokosuka General Hospital Uwamachi Department of Clinical Research National Hospital Organization Yokohama Medical Center Yokohama National University Center for Health Service Sciences

To survey the efficacy and safety of dual therapy with daclatasvir and asunaprevir in the elderly hepatitis C virus (HCV) patients multicentricity. METHODSInterferon-ineligible/intolerant patients and non-responders to previous pegylated-interferon/ribavirin therapy with chronic HCV genotype 1b infection were enrolled. Child B, C cirrhotic patients were excluded. Patients received oral direct acting antiviral treatment consisting of 60 mg daclatasvir once daily plus 200 mg asunaprevir twice daily for 24 wk. We divided the patients into two groups of 56 elderly patients (≥ 75 years-old) and 141 non-elderly patients (24). In the former, 1.8% experienced viral breakthrough, as compared with 3.5% in the latter (not significant). Adverse events occurred in 55.4% of the former and 56.0% of the latter. In the former, 7 cases (12.5%) were discontinued due to adverse events, and in the latter 9 cases were discontinued (6.4%, not significant). CONCLUSIONDual therapy with daclatasvir and asunaprevir achieved the same high rates of SVR24 in HCV elderly patients without more adverse events than in the non-elderly patients.

关键词： Asunaprevir Chronic hepatitis Daclatasvir Dual oral therapy Elderly patients Hepatitis C virus infection Hepatitis C virus Liver cirrhosis

A CIN-like TCP transcription factor(LsTCP4)having retrotransposon insertion associates with a shift from Salinas type to Empire type in crisphead lettuce(Lactuca sativa L.)

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Horticulture Research 2020年第1期7卷 2597-2610页

作者： Kousuke Seki Kenji komatsu Keisuke Tanaka Masahiro Hiraga Hiromi Kajiya-Kanegae Hideo Matsumura Yuichi Uno Nagano Vegetable and Ornamental Crops Experiment Station Tokoo 1066-1SougaShiojiriNagano 399-6461Japan Department of Bioresource Development Tokyo University of AgricultureFunako1737AtsugiKanagawa 243-0034Japan NODAI Genome Research Center Tokyo University of AgricultureSakuragaoka 1-1-1SetagayaTokyo 156-8502Japan Nagano Fruit Tree Experiment Station Ogawara 492SuzakaNagano 382-0072Japan Research Center for Agricultural Information Technology NAROKannondai 3-1-1TsukubaIbaraki 305-8517Japan Gene Research Center Shinshu Seki et al.Horticulture Research(2020)7:15 Page 13 of 14 UniversityTsuneta 3-15-1UedaNagano 386-8567Japan Plant Science Division Department of Bioresource ScienceGraduate School of Agricultural ScienceKobe UniversityRokkodai 1-1NadaKobeHyogo 657-8501Japan

To improve several agronomic traits in crisphead lettuce(Lactuca sativa L.)under high-temperature growth conditions,we investigated the correlation among those traits in multiple cultivars and performed genetic mapping of their causal *** a field cultivation test of Empire type(serrated leaf)and Salinas type(wavy leaf)cultivars,Empire type cultivars showed increased tipburn susceptibility and late bolting compared with Salinas type *** attempted genetic mapping of leaf shape and bolting time by ddRAD-seq using the F2 population derived from a cross between‘VI185’(Empire type)and‘ShinanoGreen’(Salinas type).These analyses suggested that both traits are controlled by a single locus in *** of 51 commercial lettuce cultivars with a tightly linked marker(LG5_v8_252.743Mbp)at this locus showed an association between its genotype and the serrated leaf *** further fine mapping and transcriptome analysis,a gene encoding putative CIN-like TCP transcription factor was determined to be a candidate gene at this locus and was designated as *** insertion of retrotransposable element was found in the allele of‘VI185’,and its transcript level in the leaves was lower than that in‘ShinanoGreen’.Because shapes of leaf epidermal cells in‘VI185’were similar to those in the TCP family mutant of Arabidopsis thaliana,the leaf shape phenotype was likely caused by reduced expression of ***,because it is known that the TCP family protein also controls flowering time via interaction with FT in ***,it was highly possible that LsTCP4 gave pleiotropic effects on both leaf shape and bolting time in lettuce.

关键词： cultivar insertion Lactuca