检索结果-南通市图书馆

npj Computational Materials 2020年第1期6卷 1446-1454页

作者： Akiko Ueda Yijin Zhang nobuyuki sano Hiroshi Imamura Yoshihiro Iwasa National Institute of Advanced Industrial Science and Technology(AIST) Spintronics Research CenterTsukuba 305-8568Japan Department of Electrical Engineering Columbia UniversityNew YorkNYUSA The Institute of Scientific and Industrial Research Osaka UniversityOsaka 067-0047Japan Max Planck Institute for Solid State Research 70569 StuttgartGermany Institute of Applied Physics University of TsukubaTsukuba 305-8573Japan Department of Applied Physics and Quantum-Phase Electronics(QPEC)Center The University of TokyoTokyo 113-8656Japan RIKEN Center for Emergent Matter Science(CEMS)Wako 351-0198Japan

Ionic gating is known as a powerful tool for investigation of electronic functionalities stemming from low voltage transistor operation to gate-induced electronic phase control including ***-dimensional(2D)material is one of the archetypal channel materials which exhibit a variety of gate-induced ***,the device simulations on such iongated transistor devices have never been reported,despite its importance for the future design of device *** this paper,we developed a drift-diffusion(DD)model on a 2D material,WSe2 monolayer,attached with an ionic liquid,and succeeded in simulating the transport properties,potential profile,carrier density distributions in the transistor configuration.

关键词： transistor bipolar diffusion

Determination of a Cut-Off Point of a Scale for Achievement Motive in Geriatrics That Predicts the Frequency of Undertaking Instrumental Activities of Daily Living in Community-Dwelling Elderly People

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Advances in Aging Research 2019年第6期8卷 107-118页

作者： nobuyuki sano Hisato Nakazono Department of Occupational Therapy Fukuoka International University of Health and Welfare Fukuoka Japan

Background: Among elderly people, rehabilitation is important for reducing the risk of falls and hospitalization and to maintain an independent life for longer. Motivation is a factor for elderly people to lead an active daily life and leave home more frequently. Purpose: The purposes of this study were to determine the optimal cut-off point in the Scale for Achievement Motive in Geriatrics (SAMG) that could identify individuals as inactive or active, based on the Frenchay Activities Index (FAI), and to compare characteristics between active and inactive groups classified by the cut-off point. Methods: A cross-sectional study of 285 community-dwelling elderly people measured SAMG and FAI and physical function. Receiver operating characteristic (ROC) analysis was used to calculate the area under the curve (AUC) that was the optimal cut-off point for the SAMG total score, with the associated sensitivity and 1-specificity when compared with the FAI results. Demographic parameters and physical function were compared between two groups defined by cut-off point. Results: The AUC was 0.78, the optimal cut-off for SAMG total score for indicating inactivity was ≤48, the sensitivity was 77.98% and the 1-specificity was 75.00%. The group with SAMG score >48 was characterized by a significantly higher proportion of women, fewer people sharing a house, and participation in more hobbies. Discussion: A cut-off point of 48 in the SAMG could be a predictive index of motivation toward goals for individuals with inactive daily activities. The group with score higher than the cut-off was characterized by more women, fewer people living together, and more hobbies than the group with lower scores.

关键词： Achievement Motive Instrumental Activities of Daily Living Cut-Off Point Preventive Care Community-Dwelling Elderly People

Method to measure tree-ring width,density,elemental composition,and stable carbon and oxygen isotopes using one sample

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Forestry Research 2024年第3期35卷 167-174页

作者： Chenxi Xu Yaru Zhao Wenling An Qingyu Zhao Yucheng Liu Masaki sano Takeshi Nakatsuka Key Laboratory of Cenozoic Geology and Environment Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029People's Republic of China CAS Center for Excellence in Life and Paleoenvironment Beijing 100044People's Republic of China College of Earth Sciences University of Chinese Academy of SciencesBeijing 100049People's Republic of China Graduate School of Environment Studies Nagoya UniversityNagoya 4648601Japan

Tree-ring width(RW),density,elemental com-position,and stable carbon and oxygen isotope(δ^(13)C,δ^(18)O)are widely used as proxies to assess climate change,ecology,and environmental pollution;however,a specific pretreat-ment has been needed for each ***,we developed a method by which each proxy can be measured in the same ***,the sample is polished for ring width *** obtaining the ring width data,the sample is cut to form a 1-mm-thick wood *** sample is then mounted in a vertical sample holder,and gradually scanned by an X-ray ***,the count rates of the fluorescent photons of elements(for chemical characteriza-tion)and a radiographic grayscale image(for wood density)are obtained,*** density and the element content are ***,cellulose is isolated from the 1-mm wood plate by removal of lignin,and *** producing this cellulose plate,cellulose subsamples are separated by knife under the microscope for inter-annual and intra-annual stable carbon and oxygen isotope(δ^(13)C,δ^(18)O)*** on this method,RW,density,elemental composition,δ^(13)C,and δ^(18)O can be measured from the same sample,which reduces sample amount and treatment time,and is helpful for multi-proxy comparison and combination research.

关键词： Tree-ring width Tree-ring density Tree-ring elemental composition Tree-ring stable carbon and oxygenisotopes

维普期刊数据库

A remote sensing approach to estimate the load bearing capacity of soil

在线全文

学校读者我要写书评

暂无评论

Information Processing in Agriculture 2024年第1期11卷 109-116页

作者： Italo Rômulo Mendes de Souza Edson Eyji sano Renato Paiva de Lima Anderson Rodrigo da Silva Statistics and Geoprocessing Laboratory Instituto Federal GoianoGeraldo Silva Nascimento RoadKm 2.575790-000 UrutaíGoiásBrazil Embrapa Cerrados BR-020 RoadKm 18Mailbox 0822373310-970 PlanaltinaDFBrazil Department of Soil Science ‘Luiz de Queiroz’College of AgricultureUniversity of São PauloAv.Pádua Dias235-AgronomiaPiracicabaSP 13418-900Brazil

Preconsolidation pressure(σp)of soil can be considered as an indicator of the Load Bearing Capacity(LBC),which is the tolerated surface pressure before compaction,often caused by the traffic of agricultural *** this pioneering study,a remote sensing approach was introduced to estimate LBC throughσp from soils of the“Rio Preto”Hydrographic Basin,Bahia State,Brazil,in a monthly time lapse from 2016 to ***,σp is measured by a laborious and time demanding laboratory analysis,making it unfeasible to map large *** innovative methodology of this work consists of combining active–passive satellite data on soil moisture and pedotransfer functions of clay content and water matric potential to obtain geo-located estimates ofσ*** were analysed under different classes of soil use,land cover and slope;95%confidence intervals were built for the time series of mean values of LBC for each *** overall seasonal variation in LBC estimates is similar in areas with annual crops,grasslands and natural vegetation,and flat areas are less affected by soil moisture variations over the year(between seasons).LBC decreased,in general,at about 0.5%a year in flat ***,these areas demand attention,since they occupy 86%of the Basin and are mostly subjected to agricultural soil management and surface pressure by heavy machinery.

关键词： Soil compaction SMAP Preconsolidation stress Brazilian Cerrado

沁水盆地煤层气井排采水的地球化学特征及来源示踪

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

天然气地球科学 2024年

作者：方鲁加陈碧莹能惠 Yuji sano 徐胜 Marine Core Research Institute Kochi University 天津大学地球系统科学学院

次生生物气与地下水之间存在一定的关系，特别是在煤层气等天然气储层中，了解地下水与次生生物成因甲烷之间的关系对于天然气勘探和开发具有重要意义。基于中国沁水盆地6个区块的57个煤层气井排采水和3个河水样品的化学组成、氢氧同位... 详细信息

次生生物气与地下水之间存在一定的关系，特别是在煤层气等天然气储层中，了解地下水与次生生物成因甲烷之间的关系对于天然气勘探和开发具有重要意义。基于中国沁水盆地6个区块的57个煤层气井排采水和3个河水样品的化学组成、氢氧同位素组成(δ18OH2O和δDH2O)和溶解无机碳(DIC)碳同位素组成(δ13CDIC和Δ14CDIC)，深入剖析了地下水与次生生物成因甲烷之间的复杂关系。研究结果表明：氢氧同位素分布在大气降水线附近，煤层气井排采水主要来源于大气降雨，硫酸盐微生物还原作用是郑庄和阳泉区块氘同位素富集的主要原因。研究区煤层气井排采水化学组成以Na-HCO3型为主，其变化受到水—岩相互作用、阳离子交换等过程的控制。沁水盆地6个研究区块煤层气井排采水的稳定碳同位素呈现高δ13CDIC值(-4.19‰～34.80‰，平均为16.51‰)、且与溶解无机碳含量呈明显正相关关系可能是微生物产甲烷作用的结果。煤层气井排采水中δ13CDIC与SO42-的负相关性以及δDH2O正漂移等指标也指向沁水盆地不同成熟度煤岩中次生生物成因甲烷的广泛存在。δ13CDIC与镜质体反射率(ROmax)的负相关性进一步表明沁水盆地不同成熟度煤层中广泛存在次生生物成因甲烷，且在浅埋藏和成熟度较低的煤层中最为显著。地球化学与微生物学的结合将会进一步阐明次生生物甲烷的形成途径和机制。

关键词：煤层气井排采水水化学特征碳同位素次生生物甲烷沁水盆地

Publisher Correction:Ambipolar device simulation based on the drift-diffusion model in ion-gated transition metal dichalcogenide transistors

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

npj Computational Materials 2020年第1期6卷 1375-1375页

作者： Akiko Ueda Yijin Zhang nobuyuki sano Hiroshi Imamura Yoshihiro Iwasa National Institute of Advanced Industrial Science and Technology (AIST) Spintronics Research Center Tsukuba Japan Department of Electrical Engineering Columbia University New York USA The Institute of Scientific and Industrial Research Osaka University Osaka Japan Max Planck Institute for Solid State Research Stuttgart Germany Institute of Applied Physics University of Tsukuba Tsukuba Japan Department of Applied Physics and Quantum-Phase Electronics (QPEC) Center The University of Tokyo Tokyo Japan RIKEN Center for Emergent Matter Science (CEMS) Wako Japan

The original version of this Article contained an error in the spelling of the last word of the *** error has been corrected in both the PDF and HTML versions of the Article.

关键词： HTML Publisher diffusion

Immunohistochemical Profile of Breast Cancer: A Retrospective Study in the Democratic Republic of Congo

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Cancer Therapy 2024年第5期15卷 222-230页

作者： Rive Lukuaku Buanza Jérémie Okumadi Lukuke Fabrice Bokambandja Lolangwa Andy Mbangama Muela Teddy Mukendi Lwambwa Fabrice Bumwana Ali sano Sire Mariama Bleuvy-Justice Fayeta Mardoche Binangu Jean Isme Ngambika David Azako Tasema Dieudonné Mvumbi Faculty of Medicine Bel Campus Technological University Kinshasa Democratic Republic of Congo Department of Pathological Anatomy University Clinics of Kinshasa Kinshasa Democratic Republic of Congo Department of Gynecology and Obstetrics University Clinics of Kinshasa Kinshasa Democratic Republic of Congo Department of Oncology NGANDA Hospital Center Kinshasa Kinshasa Democratic Republic of Congo Faculty of Dentistry University of Kinshasa Kinshasa Democratic Republic of Congo Faculty of Medicine University of MBANDAKA Kinshasa Democratic Republic of Congo Department of Molecular Biology Faculty of Medicine University of Kinshasa Kinshasa Democratic Republic of Congo Institute of Medical Immunology Free University of Brussels Bruxelles Belgium

Background: The management of breast cancer increasingly requires molecular classification based on immunohistochemistry. As breast cancer is a heterogeneous disease characterized by the accumulation of multiple molecular alterations that give each tumour its own phenotype and evolutionary potential, immunohistochemistry, as a complementary technique to morphological examination, determines the status of hormone receptors and on protein in tumour cells, which are predictive and prognostic markers of breast cancer. This technique is often little used in the Democratic Republic of Congo (DRC), as this study shows. The under-use of this technique due to a lack of equipment and/or human skills explains the paucity of epidemiological data available to date. Objective: Determine the immunohistochemical profile of breast cancer. Methodology: This is a retrospective study carried out in the Anapath Department of the NGANDA Hospital from January 1, 2020 to December 31, 2022, i.e. a 3-year period. Result: A total of 736 patients were registered in the hospitalization register of the Oncology Department of CH NGANDA for the period corresponding to the present study. Breast cancer was diagnosed in 110 patients, representing 14.9% of all cases. The mean age of the patients was 58.4 ± 8.2 years, with extremes ranging from 30 to 76 years. Breast nodules were the most common reason for diagnosis in 56.3% of cases, with Luminal A dominating in 17.3%. Conclusion: Breast cancer is a major public health problem. Worldwide, it is the most frequently diagnosed cancer in women and the leading cause of cancer-related death in women. In the Democratic Republic of Congo, because of the delay in consulting our patients and the weakness of systematic screening, patients are seen at an advanced stage of the disease. Treatment is multidisciplinary, involving surgery, radiotherapy, chemotherapy (including targeted therapies) and hormone therapy. Patient awareness and screening campaigns will cont

关键词： Immunohistochemistry Cancer Breast

Improved Capon Estimator for High-Resolution DOA Estimation and Its Statistical Analysis

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

IEEE/CAA Journal of Automatica Sinica 2023年第8期10卷 1716-1729页

作者： Weiliang Zuo Jingmin Xin Changnong Liu Nanning Zheng Akira sano IEEE the National Key Laboratory of Human-Machine Hybrid Augmented Intelligence the National Engineering Research Center for Visual Information and Applicationsand the Institute of Artificial Intelligence and RoboticsXi’an Jiaotong UniversityXi’an 710049China the Data Center China Construction BankBeijing 100033China the Department of System Design Engineering Keio UniversityYokohama 223-8522Japan

Despite some efforts and attempts have been made to improve the direction-of-arrival(DOA)estimation performance of the standard Capon beamformer(SCB)in array processing,rigorous statistical performance analyses of these modified Capon estimators are still *** paper studies an improved Capon estimator(ICE)for estimating the DOAs of multiple uncorrelated narrowband signals,where the higherorder inverse(sample)array covariance matrix is used in the Capon-like cost *** establishing the relationship between this nonparametric estimator and the parametric and classic subspace-based MUSIC(multiple signal classification),it is clarified that as long as the power order of the inverse covariance matrix is increased to reduce the influence of signal subspace components in the ICE,the estimation performance of the ICE becomes equivalent to that of the MUSIC regardless of the signal-to-noise ratio(SNR).Furthermore the statistical performance of the ICE is analyzed,and the large-sample mean-squared-error(MSE)expression of the estimated DOA is *** the effectiveness and the theoretical analysis of the ICE are substantiated through numerical examples,where the Cramer-Rao lower bound(CRB)is used to evaluate the validity of the derived asymptotic MSE expression.

关键词： Capon beamformer direction-of-arrival(DOA)estimation large-sample mean-squared-error(MSE) subspace-based methods uniform linear array

维普期刊数据库

Flow fields control for bubble refinement induced by electromagnetic fields

在线全文

学校读者我要写书评

暂无评论

Journal of Iron and Steel Research(International) 2022年第4期29卷 575-587页

作者： Lian-yu Wang Ze-yi Liu Ming He Xiao-ming Liu Masamichi sano Li-jia Zhao Qiang Wang Key Laboratory of Electromagnetic Processing of Materials(Ministry of Education) Northeastern UniversityShenyang 110819LiaoningChina School of Metallurgy Northeastern UniversityShenyang 110819LiaoningChina State Key Laboratory of Rolling and Automation Northeastern UniversityShenyang 110819LiaoningChina

Large bubbles seriously reduce the efficiencies of the interactions between the bubbles and the molten steel,such as energy transfer,momentum transfer,mass transfer and chemical *** reduce the size of the bubbles and increase the gas–liquid interface area,a novel non-intrusive method of bubble refinement was proposed,which only depends on the molten steel flow field controlled by the rotating electromagnetic *** flow fields of the molten steel for bubble refinement were analyzed,and the corresponding bubble refinement was *** was found that the molten steel formed obvious rotating turbulent flow for bubble refinement under the unidirectional rotating electromagnetic ***,the large vortex in the center of the molten pool caused by the rotating flow made the bubbles aggregate and coalesce again,resulting in formation of larger bubbles and gas *** suppress the central vortex formation and enhance the bubble refinement,the forward-reverse rotating electromagnetic field for bubble refinement was *** irregular and chaotic flow occurred repeatedly because of alternating forward and reverse rotating in a short period,so that the turbulent kinetic energy and turbulent dissipation of the flow field always remained at a high level which favors bubble *** a result,the bubble diameter can decrease by more than 50%compared to that without electromagnetic ***,it is important that this non-intrusive kind of bubble refinement method completely avoids the introduction of non-metallic inclusions caused by intrusive configuration.

关键词： Bubble refinement Electromagnetic field Flow field Forward-reverse rotating Bubble Sauter

Degassing of deep-sourced CO_(2) from Xianshuihe-Anninghe fault zones in the eastern Tibetan Plateau

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China Earth Sciences 2022年第1期65卷 139-155页

作者： Sheng XU Lufeng GUAN Maoliang ZHANG Jun ZHONG Wei LIU Xian'gang XIE Congqiang LIU Naoto TAKAHATA Yuji sano Institute of Surface-Earth System Science School of Earth System ScienceTianjin UniversityTianjin 300072China Atmosphere and Ocean Research Institute The University of TokyoKashiwaChiba 277-8564Japan

A large number of gases are releasing from the medium-high temperature geothermal fields distributed along the large-scale strike-slip fault zones in the southeastern margin of the Tibetan *** this study,11 hot spring water and the associated bubbling gas samples were collected along the Xianshuihe-Anninghe fault zones(XSH-ANHFZ)and analyzed for chemical and isotopic *** δ^(18)_(H_(2)O) and δD_(H_(2)O) values indicate that hot spring waters are predominantly meteoric origin recharged from different *** water samples are significantly enriched in Na^(+) and HCO_(3) due to the dissolution of regional evaporites,carbonates and Na-silicates.^(3)He/^(4)He ratios of the gas samples are 0.025-2.73 times the atmospheric *** ^(3)He/^(4)He ratios are high in the Kangding region where the dense faults are distributed,and gradually decrease with increasing distance from Kangding towards both sides along the Xianshuihe fault zones(XSHFZ).Hydrothermal fluids have dissolved inorganic carbon(DIC)concentrations from 2 to 42 mmol L^(-1),δ^(13)C_(DIC) from -6.9‰ to 1.3‰,δ^(13)C_(CO_(2)) from -7.2‰ to -3.6‰ and Δ^(14)C from -997‰ to -909‰.Combining regional geochemical and geological information,the CO_(2)sources can be attributed to deep-sourced CO_(2)from mantle and metamorphism of marine carbonate,and shallow-sourced CO_(2)from the dissolution of marine carbonate and biogenic CO_(2).The mass balance model shows that 11±6% of the DIC is sourced from the dissolution of shallow carbonate minerals,9±8% formed by pyrolysis of sedimentary organic matter,80±9% derived from deep metamorphic origin and mantle-derived CO_(2).Among them,the deep-sourced CO_(2)in Anninghe fault zones(ANHFZ)is merely metamorphic carbon,whereas ca.12% and ca.88% of the deep-sourced CO_(2)in the XSHFZ are derived from the mantle and metamorphic carbon,*** average deep-sourced CO_(2)flux in the Kangding geothermal field is estimated to be 160 ta^(-1).If all the hot

关键词： Hot spring Fluid geochemistry Deep-sourced carbon Xianshuihe-Anninghe fault zones Tibetan Plateau

维普期刊数据库