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Self-interstitials generated on silicon bulk surface

Progress in Natural Science:Materials International 2011年第1期21卷 17-20页

作者： yukihiro kato Ryoji FUKUDA Yuta TAKENO Toshitada SHIMOZAKI Takahisa OKINO Department of Design Engineering Semiconductor Business DivisionMitsumi Electric Co.LtdAtugi 243-0004Japan Department of Architecture and Mechatronics Faculty of EngineeringOita UniversityOita 870-1192Japan Department of Materials and Technology Kyushu Institute of TechnologyKitakyushu 804Japan

The self-interstitial atoms in silicon generated by the bulk surface oxidation diffuse into the bulk inside and affect the phenomena such as the diffusions and the stacking *** generation rate of self-interstitials(Rgen) depends on theωpower of the oxidation film growth rate dX0/*** physical quantityωis important to understand the material science relevant to self-interstitials in the silicon ***,the conclusiveωvalue is not reported,although variousωvalues to control the generation rate have been *** the present study,the chemical reaction equation is analytically solved,and using the result,the oxidation stacking fault radius(r) is analytically expressed against the oxidation time(t).Comparing the obtained relation of r=r(t) with the experimental results of the stacking faults,the analytical expression of co is determined and the physical meaning ofωis ***,the temperature dependence ofωis also numerically determined.

关键词： silicon self-interstitial vacancy oxide impurity diffusion stacking fault

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Differential effects of physical activity and sleep duration on cognitive function in young adults

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Journal of Sport and Health Science 2018年第2期7卷 227-236页

作者： Kazuko kato Kunihiro Iwamoto Naoko Kawano yukihiro Noda Norio Ozaki Akiko Noda Department of Biomedical Sciences Chubu University Graduate School of Life and Health Sciences Department of Psychiatry Nagoya University Graduate School of Medicine Institutes of Innovation for Future Society Nagoya University Division of Clinical Sciences and Neuropsychopharmacology Graduate School of PharmacyMeijo University

Purpose: Although exercise and sleep duration habits are associated with cognitive function, their beneficial effects on cognitive function remain unclear. We aimed to examine the effect of sleep duration and daily physical activity on cognitive function, elucidating the neural mechanisms using near-infrared spectroscopy(NIRS).Methods: A total of 23 healthy young adults(age 22.0 ± 2.2 years) participated in this study. Exercise amount was assessed using a uniaxial accelerometer. We evaluated total sleep time(TST) and sleep efficiency by actigraphy. Cognitive function was tested using the N-back task, the Wisconsin Card Sorting Test(WCST), and the Continuous Performance Test—Identical Pairs(CPT-IP), and the cortical oxygenated hemoglobin levels during a word fluency task were measured with ***: Exercise amount was significantly correlated with reaction time on 0- and 1-back tasks(r = —0.602, p = 0.002; r = —0.446, p = 0.033,respectively), whereas TST was significantly correlated with % corrects on the 2-back task(r = 0.486, p = 0.019). Multiple regression analysis,including exercise amount, TST, and sleep efficiency, revealed that exercise amount was the most significant factor for reaction time on 0- and 1-back tasks(b = —0.634, p = 0.002; b = —0.454, p = 0.031, respectively), and TST was the most significant factor for % corrects on the 2-back task(b = 0.542, p = 0.014). The parameter measured by WCST and CPT-IP was not significantly correlated with TST or exercise amount. Exercise amount, but not TST, was significantly correlated with the mean area under the NIRS curve in the prefrontal area(r = 0.492, p = 0.017).Conclusion: Exercise amount and TST had differential effects on working memory and cortical activation in the prefrontal area. Daily physical activity and appropriate sleep duration may play an important role in working memory.

关键词： Cortical oxygenation Executive function Exercise Sustained attention Total sleep time Working memory

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Underweight and Obesity in Low Birth Weight Children in Early Infancy in Japan

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Food and Nutrition Sciences 2015年第3期6卷 339-347页

作者： Rena kato Masaru Kubota Hiromi Saito yukihiro Takahashi Department of Human Life and Environment Nara Women’s University Nara Japan Department of Neonatal Intensive Care Unit Nara Medical University Hospital Nara Japan

Introduction: Although there are several reports on the prevalence of underweight or obesity in low birth weight (LBW, th percentile and ≥90th percentile of the body mass index (BMI), respectively, based on reference values for Japanese children. Results: LBW children had accelerated growth from birth to age 3.5 years, but at Age 5, both sexes had significantly lesser height and weight z-scores, with notably lesser BMI percentile scores for girls, compared with NBW children. The prevalence of underweight was significantly higher in the LBW children throughout the study period. There were no significant differences in the prevalence of obesity between the two groups, except for at birth. Multiple regression analysis revealed that small-for-gestational age was associated with underweight at Age 5 years. Conclusions: This study indicates that, up to Age 5, underweight is a more serious problem than obesity in LBW children. Our results suggest that careful observation of growth from early infancy is necessary to prevent the occurrence of underweight in early infancy.

关键词： Growth Low Birth Weight Obesity Small-for-Gestational Age Underweight

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Significance of timing of therapeutic line on effectiveness of nivolumab for metastatic renal cell carcinoma

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Current Urology 2023年第1期17卷 52-57页

作者： Jun Teishima Daiki Murata Kazuma yukihiro Yohei Sekino Shogo Inoue Tetsutaro Hayashi Koji Mita Yasuhisa Hasegawa Masao kato Mitsuru Kajiwara Masanobu Shigeta Satoshi Maruyama Hiroyuki Moriyama Seiji Fujiwara Akio Matsubara Department of Urology Graduate School of Biomedical and Health SciencesHiroshima UniversityHiroshimaJapan Department of Urology Hiroshima-City Asa Citizens HospitalHiroshimaJapan Department of Urology Fukuyama Medical CenterFukuyamaJapan Department of Urology Hiroshima General HospitalHatsukaichiJapan Department of Urology Hiroshima Prefectural HospitalHiroshimaJapan Department of Urology Kure Medical Center and Chugoku Cancer CenterKureJapan Department of Urology Miyoshi Central HospitalMiyoshiJapan Department of Urology Onomichi General HospitalOnomichiJapan Department of Urology Higashi-Hiroshima Medical Center Higashi-HiroshimaJapan

Objectives:This study aimed to clarify the significance of therapeutic timing on the effectiveness of nivolumab for treating metastatic renal cell *** and methods:Fifty-eight patients with metastatic renal cell carcinoma treated with nivolumab monotherapy were retrospectively *** who were treated with nivolumab as second-line therapy were included in the second-line group,while the others were included in the later-line *** clinicopathological characteristics,effects of nivolumab,and prognoses of these groups were ***:Twenty and thirty-eight patients were included in the second-line and later-line groups,*** were no significant differences in the distribution of International Metastatic Renal Cell Carcinoma Database Consotium risk and other clinicopathological characteristics between the 2 *** proportion of patients whose objective best response was progressive disease in the second-line group was significantly lower than that in the later-line group(15%vs.50%,p=0.0090).The 50%progression-free survival with nivolumab in the second-line group was significantly better than that in the later-line group(not reached and 5 months,p=0.0018).Multivariate analysis showed that the second-line setting was an independent predictive factor for better progression-free survival(p=0.0028,hazard ratio=0.108).The 50%overall survival after starting nivolumab in the second-line and later-line groups was not reached and 27.8 months,respectively(p=0.2652).Conclusions:The therapeutic efficacy of nivolumab as second-line therapy is expected to be better than that of later therapy.

关键词： Immune checkpoint inhibitor Metastatic renal cell carcinoma Nivolumab Prognostic factor Second-line treatment

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Is Dose Adjustment Based on Several Factors of Body Size Descriptors Effective for Prevention of Thrombocytopenia by Linezolid Therapy in Hemodialysis Patients?

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Pharmacology & Pharmacy 2016年第10期7卷 417-423页

作者： Hideo kato Mao Hagihara Yuka Yamagishi yukihiro Hamada Jun Hirai Naoya Nishiyama Yusuke Koizumi Katsuhiko Matsuura Hiroshige Mikamo Department of Infection Control and Prevention Aichi Medical University School of Medicine Nagakute Japan Department of Pharmacy Aichi Medical University School of Medicine Nagakute Japan

Previous study suggested that low body weight was one of the risk factors of thrombocytopenia induced by linezolid in non-hemodialysis patients. However, there have been little investigations for the linezolid-induced thrombocytopenia in hemodialysis patients. This study was to evaluate the association between several factors of body size descriptors and thrombocytopenia in hemodialysis-patients. No factor of body size descriptors showed significant correlation with linezolid-induced thrombocytopenia (patients with thrombocytopenia vs patients without thrombocytopenia: body weight;60.0 kg vs 55.3 kg, p = 0.82: body mass indices;21.1 kg/m2 vs 21.2 mg/m2, p = 0.44: ideal body weight;61.2 kg vs 59.5 kg, p = 0.21: lean body weight;50.1 kg vs 45.7 kg, p = 0.64: dosage amount;20.0 mg/kg vs 21.7 mg/kg, p = 0.74: body surface area;1.65 m2 vs 1.54 m2, p = 0.43). There were not significant differences in the body size descriptors between linezolid therapy for more than 14 days and for less than 13 days (more than 14 days vs less than 13 days: body weight;53.5 kg vs 56.8 kg, p = 0.75: body mass indices;20.9 kg/m2 vs 21.1 mg/m2, p = 0.47: ideal body weight;60.3 kg vs 59.9 kg, p = 0.17: lean body weight;44.3 kg vs 47.7 kg, p = 0.56: dosage amount;22.4 mg/kg vs 21.1 mg/kg, p = 0.67: body surface area;1.51 m2 vs 1.59 m2, p = 0.37). Our data suggested that dosage adjustment of linezolid based on body weight was not recommended in hemodialysis-patients.

关键词： Linezolid Thrombocytopenia Body Weight

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