检索结果-南通市图书馆

Density Modulation Experiments on HT-7 Tokamak

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Physics Letters 2004年第12期21卷 2458-2460页

作者： K.Tanaka 高翔揭银先 R.Sakamoto K.toi NationalInstituteforFusionScience 322-6Oroshi-choTokiJapan InstituteofPlasmaPhysics ChineseAcademyofSciencesHefei230031

Density modulation experiments are successfully conducted on HT-7 ohmic discharge to investigate particle transport coefficients: diffusion coefficients D and convection velocity V. The particle transport is studied at low (1.5 x 10(19) m(-3)) and high (3 X 10(19) m(-3)) density regimes. The clear differences are observed that D is 0.42m(2)/s and 0.17m(2)/s, V is 4.7 m/s (outward) and 1.6 m/s (inward) for low and high density plasmas respectively, where spatially constant D and V(r) = (r/a)V-0 were assumed for the analysis.

关键词： Plasma physics

Magnetic Islands Observed by a Fast-Framing Tangentially Viewing Soft X-Ray Camera on LHD and TEXTOR

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Plasma Science and Technology 2006年第1期8卷 45-49页

作者： S. OHDACHI K. toi G. FUCHS TEXTOR Team National Institute for Fusion Science Toki 509-5292 Gifu Japan Institut fiir Plasma physik Forschungszentrum Jfilich GmbH Euratom Association D-52425 Jülich Germany

The formation of magnetic islands within plasmas confined magnetically within the tori has significant influence upon their confinement and stability. To obtain an experimental insight into the formation and dynamics of such island structures we employed a fast framing camera viewing the plasma tangentially in the toroidal direction. The toroidal viewing direction gives the advantage in that the islands are viewed almost tangentially and this greatly facilitates the reconstruction of the local data from the line integrated ones. We discuss an effective method to do inversion. To study the fluctuations seen in the video images we perform a singular value decomposition, and then we use a truncated least square method to infer their pictures in space.

关键词： magnetic island, fluctuation measurement tomography

Molecular vulnerabilities and therapeutic resistance in hormone receptor positive and HER2 dependent breast cancer tumours

在线全文

学校读者我要写书评

暂无评论

Cancer Drug Resistance 2022年第2期5卷 487-497页

作者： Ravi Velaga Sunao Tanaka Masakazu toi Breast Surgery Graduate School of MedicineKyoto University HospitalKyoto University54 Shogoin-KawarachoSakyo-kuKyoto 606-8507Japan

Over the past two decades,high sensitivity to HER2-amplified primary breast cancers has been achieved with HER2-targeted ***4/6 inhibitors have long been identified as a potential treatment option for advanced breast cancer ***,acquired HER2 heterogeneity leading to resistance during the treatment has been identified as a *** review focuses on the recent resistance mechanisms identified and potential therapeutic targets for conventional and combination endocrine therapies with CDK4/6 inhibitors by various breast cancer clinical trials and research groups in HER amplified and/or mutated breast cancer *** HER2 alterations,JNK pathway,hyperactivated TORC1,co-mutations in HER2 and HER3,phenotypic changes of HER2,and few other advanced findings are identified as potential therapeutic targets in treating current HER2 endocrine therapy-resistant *** with the HER2-focused resistance mechanisms,we also describe how the microbiome may play a role in breast cancer therapy and its potential for new therapeutic strategies to overcome drug resistance in breast cancers.

关键词： HER2 CDK4/6 MONALESSA-2 trial JNK pathway HER2 and HER3 co-mutations microbiome hot and cold tumour drug resistance

Breeding wheat for drought tolerance： Progress and technologies

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 Integrative Agriculture 2016年第5期15卷 935-943页

作者： Learnmore Mwadzingeni Hussein Shimelis Ernest Dube Mark D Laing toi J Tsilo College of Agriculture Engineering and Science University of KwaZulu-Natal/African Centre for Crop Improvement Scottsville 3209 South Africa Agricultural Research Council-Small Grain Institute (ARC-SGI) Bethlehem 9700 South Africa

Recurrent drought associated with climate change is among the principal constraints to global productivity of wheat（Triticum aestivum（L.） and T. turgidum（L.））. Numerous efforts to mitigate drought through breeding resilient varieties are underway across the world. Progress is, however, hampered because drought tolerance is a complex trait that is controlled by many genes and its full expression is affected by the environment. Furthermore, wheat has a structurally intricate and large genome. Consequently, breeding for drought tolerance requires the integration of various knowledge systems and methodologies from multiple disciplines in plant sciences. This review summarizes the progress made in dry land wheat improvement, advances in knowledge, complementary methodologies, and perspectives towards breeding for drought tolerance in the crop to create a coherent overview. Phenotypic, biochemical and genomics-assisted selection methodologies are discussed as leading research components used to exploit genetic variation. Advances in phenomic and genomic technologies are highlighted as options to circumvent existing bottlenecks in phenotypic and genomic selection, and gene transfer. The prospects of further integration of these technologies with other omics technologies are also provided.

关键词： drought tolerance genomic selection genotyping phenotyping wheat

Observation of MHD Instabilities Driven by Energetic Electrons in the Large Helical Device

在线全文

学校读者我要写书评

暂无评论

Plasma Science and Technology 2015年第4期17卷 276-279页

作者： Mitsutaka ISOBE Kunihiro OGAWA Akihiro SHIMIZU Masaki OSAKABE Shin KUBO K.toi the LHD Experiment Group National Institute for Fusion Science Toki 509-5292Japan Department of Fusion Science The Graduate University for Advanced Studies(SOKENDAI)Toki 509-5292Japan Department of Energy Engineering and Science Nagoya UniversityNagoya 464-8463Japan

Coherent magnetic fluctuations in an acoustic range of frequency have been regularly observed in low-density（n_e〈0.2×10^（19）m^（-3））plasmas with strong second harmonic electron cyclotron resonance heating（ECRH）on the Large Helical *** X-ray measurements indicated that energetic electrons are generated in these ECRH *** magnetic fluctuations are suppressed in higher density discharges where energetic electrons are not *** ECRH power modulation experiment indicated that the observed magnetohydrodynamic（MHD）mode has an acoustic nature rather than an Alfvenic nature.

关键词： LHD ECRH energetic electron MHD instability

*** human visual cortex responses to flickering light using functional near infrared spectroscopy and constrained ICA

在线全文

学校读者我要写书评

暂无评论

Journal of Innovative Optical Health Sciences 2014年第6期7卷 77-89页

作者： Nguyen Duc Thang Vo Van toi Le Giang Tran Nguyen Huynh Minh Tam Lan Anh Trinh Biomedical Engineering Department International University Vietnam National Universities HCMCVietnam University of Saskatchewan Canada Electronics Engineering Department Posts and Telecommunications Institute of Technology Ho Chi Minh City Vietnam

The human visual sensitivity to the flickering light has been under investigation for *** finding of research in this area can contribute to the understanding of human visual system mechanism and visual disorders,and establishing diagnosis and treatment of *** aim of this study is to investigate the ffects of the flickering light to the visual cortex by monitoring the hemodynamic responses of the brain with the functional near infrared spectrosoopy(ENIRS)*** the acquired fNIRS signals are afected by physiological factors and measurement artifacts,constrained independent component analysis(eICA)was applied to extract the actual fNIRS responses from the obtained *** experimental results revealed significant changes(p<0.0001)of the hemodynamic responses of the visual *** the baseline when the flickering stimulation was *** the uses of cICA,the contrast to noise ratio(CNR),reflecting the contrast of hemodynamic concentration between rest and task,became *** indicated the improvement of the NIRS signals when the noise was *** subsequent studies,statistical analysis was used to infer the correlation between the NIRS signals and the visual *** found that there was a slight decrease of the oxygenated hemoglobin con-centration(about 5.69%)over four frequencies when the modulation ***,the variations of oxy and deoxy-hemoglobin were not statistically significant.

关键词： Papillometre visual stimulation functional near infrared spectroscopy constrained independent component analysis

Analysis Scheme for Density Modulation Experiments to Study Particle Confinements

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Plasma Science and Technology 2006年第1期8卷 65-71页

作者： K. TANAKA C. MICHAEL K. KAWANATA T. TOKUZAWAI M. SHOJI K. toi 高翔揭银先 National Institute for Fusion Science Toki 509-5292 Japan Institute of Plasma Physics Chinese Academy of Science Hefei 230031 China

Density modulation experiments are powerful experimental schemes for the study of particle transport. The diffusion coefficients （D） and convection velocity （V）, which cannot be evaluated from the particle balance in the equilibrium state, can be obtained separately. Further, the estimated values of D and V are determined independent of the absolute value of the particle source rate, which is difficult to obtain experimentally. However, the sensitivities and interpretation of D and V from the modulation experiments need to be considered. This paper describes numerical techniques for solving the particle balance equation of the modulation components. Examples of the analysis are shown regarding the data of LHD experiments, and the results of the modulation experiments are discussed.

关键词： density modulation, particle confinements, diffusion coefficient convection velocity

Microalgae:A potential alternative to health supplementation for humans

在线全文

学校读者我要写书评

暂无评论

Food Science and Human Wellness 2019年第1期8卷 16-24页

作者： Apurav Krishna Koyande Kit Wayne Chew Krishnamoorthy Rambabu Yang Tao Dinh-toi Chu Pau-Loke Show Department of Chemical Engineering Faculty of EngineeringUniversity of Nottingham Malaysia43500Selangor Darul EhsanMalaysia Department of Chemical Engineering School of Civil and Chemical EngineeringVIT UniversityVellore632014Tamil NaduIndia College of Food Science and Technology Nanjing Agricultural University1 Weigang RoadNanjingJiangsu210095China Institute for Research and Development Duy Tan UniversityK7/25 QuangTrungDanangViet Nam Faculty of Biology Hanoi National University of Education136 XuanThuyCauGiayHanoiViet Nam

Microalgae has been consumed in human diet for thousands of *** is an under-exploited crop for production of dietary *** cultivation does not compete with land and resources required for traditional crops and has a superior yield compared to terrestrial *** high protein content has exhibited a huge potential to meet the dietary requirements of growing *** from being a source of protein,presence of various bio-active components in microalgae provide an added health *** review describes various microalgal sources of proteins and other bio-active *** of the heavily studied group of bio-active components are pigments due to their anticarcenogenic,antioxidative and antihypertensive *** to various plant and floral species,microalgae contain higher amounts of *** derived proteins have complete Essential Amino Acids(EAA)profiles and their protein content is higher than conventional sources such as meat,poultry and dairy ***,microalgal based functional foods have not flooded the *** lack of awareness coupled with scarce incentives for producers result in under-exploitation of microalgal *** of microalgal derived components as dietary and nutraceutical supplements is discussed comprehensively.

关键词： Health Human Microalgae Protein Supplement

Density Modulation Experiments to Determine Particle Transport Coefficients on HT-7 Tokamak

在线全文

学校读者我要写书评

暂无评论

Plasma Science and Technology 2006年第2期8卷 129-132页

作者：揭银先高翔 K.TANAKA R.SAKAMOTO K.toi 刘海庆高丽 M.ASIF 刘瑾徐强童兴德程永飞 Institute of Plasma Physics Chinese Academy of Sciences Hefei 230031 China National Institute for Fusion Science 322-6 Oroshi-cho Toki Japan Huazhong University of Science and Technology Wuhan 430074China

The particle diffusion coefficient and the convection velocity were studied based on the density modulation using D2 gas puffing on the HT-7 tokamak. The density was measured by a five-channel FIR interferometer. The density modulation amplitude was 10% of the central chord averaged background density and the modulation frequency was 10 Hz in the experiments. The particle diffusion coefficient （D） and the convection velocity （V） were obtained for different background plasmas with the central chord averaged density 〈ne〉 = 1.5×10^19m^-3 and 3.0×10^19 m^-3 respectively. It was observed that the influence of density modulation on the main plasma parameters was very weak. This technology is expected to be useful for the analysis of LHW and IBW heated plasmas on HT-7 tokamak in the near future.

关键词： electron density density modulation particle transport coefficient