检索结果-南通市图书馆

Chinese Physics C 2016年第11期40卷 67-74页

作者：何庆华 H.Fujimura H.Fukasawa R.Hashimoto Y.Honda T.Ishikawa T.Iwata S.kaida J.kasagi A.kawano S.kuwasaki k.Maeda S.Masumoto M.Miyabe F.Miyahara k.Mochizuki N.Muramatsu A.Nakamura k.Nawa S.Ogushi Y.Okada Y.Onodera k.ozawa Y.Sakamoto M.Sato H.Shimizu H.Sugai k.Suzuki Y.Tajima S.Takahashi Y.Taniguchi Y.Tsuchikawa H.Yamazaki R.Yamazaki H.Y.Yoshida Research Center for Electron Photon Science Tohoku University Institute of Fluid Physics China Academy of Engineering Physics Department of Physics Wakayama Medical University Department of Physics Yamagata University Department of Information Science Tohoku Gakuin University Department of Physics Tohoku University Department of Physics University of Tokyo Accelerator Laboratory KEK Institute of Particle and Nuclear Studies KEK Wakasa-wan Energy Research Center

We have developed an event mixing technique to observe Bose-Einstein correlations （BEC） between two identical neutral pions produced in photo-induced reactions in the non-perturbative QCD energy region. It is found that the missing-mass consistency cut and the pion-energy cut are essential for the event mixing method to effectively extract BEC observables. A Monte Carlo （MC） simulation is used to validate these constraints and confirms the efficiency of this method. Our work paves the way for similar BEC studies at lower energies where the multiplicity of emitted bosons is limited.

关键词： Bose-Einstein correlations photoproduction event mixing

维普期刊数据库

在线全文

学校读者我要写书评

暂无评论

日本草地型奶牛管理结构的研究

国外畜牧科技 1984年第5期 61-61页

作者： k.ozawa 朱大海

构成奶牛管理的不同因素彼此间或多或少的相关性影响着管理的效果。此项研究试图测定各管理因素影响管理效果的程度,以便改进奶牛场的管理。这些因素可分为:1.直接影响泌乳母牛产奶量的技术结构的一些因素。2.影响管理成本的成本结构因... 详细信息

构成奶牛管理的不同因素彼此间或多或少的相关性影响着管理的效果。此项研究试图测定各管理因素影响管理效果的程度,以便改进奶牛场的管理。这些因素可分为:1.直接影响泌乳母牛产奶量的技术结构的一些因素。2.影响管理成本的成本结构因素。3.由前面两种因素产生的利润结构因素。作者力图用多因方差分析法来解析这三种管理因素的因果关系。材料来源是作者选用的156头管理结构上比较同

关键词：草地奶牛日本

Numerical analysis on element creation by nuclear transmutation of fission products

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Nuclear Science and Techniques 2015年第1期26卷 113-120页

作者： Atsunori Terashima Masaki ozawa Department of Nuclear Engineering Graduate School of Science and EngineeringTokyo Institute of Technology Research Laboratory for Nuclear Reactors Tokyo Institute of Technology

A burnup calculation was performed to analyze the Apr`es ORIENT process, which aims to create highlyvaluable elements from fission products separated from spent nuclear fuels. The basic idea is to use nuclear transmutation induced by a neutron capture reaction followed by a β-decay, thus changing the atomic number Z of a target element in fission products by 1 unit. LWR(PWR) and FBR(MONJU) were considered as the transmutation devices. High rates of creation were obtained in some cases of platinum group metals(44Ru by FBR,46 Pd by LWR) and rare earth(64Gd by LWR,66 Dy by FBR). Therefore, systems based on LWR and FBR have their own advantages depending on target elements. Furthermore, it was found that creation rates of even Z(= Z + 1) elements from odd Z ones were higher than the opposite cases. This creation rate of an element was interpreted in terms of "average 1-group neutron capture cross section of the corresponding target element σc Z defined in this work. General trends of the creation rate of an even(odd) Z element from the corresponding odd(even) Z one were found to be proportional to the 0.78th(0.63th) power of σc Z, however with noticeable dispersion. The difference in the powers in the above analysis was explained by the difference in the number of stable isotopes caused by the even-odd effect of Z.

关键词：裂变产物元素数值分析嬗变快中子增殖反应堆轻水反应堆稳定同位素 LWR

维普期刊数据库

Resourceability on nuclear fuel cycle by transmutation approach

在线全文

学校读者我要写书评

暂无评论

Science China Chemistry 2012年第9期55卷 1746-1751页

作者： ozawa Masaki SAITO Masaki Research Laboratory for Nuclear Reactors Tokyo Institute of Technology2-12-1-N1-1 OokayamaMeguro-kuTokyo 152-8550Japan

A resourceability on nuclear fuel cycle by transmutation of fission products in the spent fuel of nuclear reactors is discussed in this paper to investigate the feasibility of "creation and utilization" of Après ORIENT from Adv.-ORIENT cycle,in which chemical "separation and utilization" of nuclear rare metals(platinum group metals,Mo,Tc,rare earth,etc.) has been proposed since ***ès ORIENT research program was newly initiated in FY2011 for nuclear transmutation of fission products into stable or short-lived highly-valuable *** the resourceability of rare earth metals from fission products,non-radioactive Nd and Dy can be created from Pr and Tb,respectively,by ***,the Dy creation has a relatively high feasibility of about 10-20 %/y in creation rate.A proper moderation of neutrons in blanket of fast reactors may be required to provide a high creation rate of La from *** light platinum group metals,non-radioactive Ru can be created from Tc by transmutation,of which creation rate is about 4-5 %/y in blanket of fast *** created from Rh is almost non-radioactively depending on the isotope fraction of 107 *** creation from Ru is not feasible under the neutron irradiation of typical nuclear reactors.

关键词：核燃料循环嬗变非放射性同位素核裂变产物核反应堆铂族金属稀土金属中子照射

维普期刊数据库

Three-Dimensional Visualization of Shock Cell Structure and Screech Tone Emission in Underexpanded Circular Jet

在线全文

学校读者我要写书评

暂无评论

Journal of Flow Control, Measurement & Visualization 2022年第1期10卷 1-11页

作者： keita ozawa Takayuki Yamagata Nobuyuki Fujisawa Graduate School of Science and Technology Niigata University Niigata Japan Department of Mechanical Engineering Niigata University Niigata Japan Department of Mechanical Engineering Shinshu University Nagano Japan

The three-dimensional visualization of flow and screech-tone emission from an underexpanded circular jet is first investigated experimentally using high-speed cross-schlieren imaging and microphone measurements in the cross-sectional planes along the jet axis. This experimental technique allows the visualization of the shock-cell structure, directivity of sound intensity, and frequency spectrum in the cross-sectional planes of the screeching jet. The high-speed cross-schlieren observation of the screeching jet shows the occurrence of an asymmetrical shock-cell structure that is generated by the flapping mode in the screeching jet. This contributes to the generation of a screech tone propagating upstream along the jet axis and non-uniform sound intensities around the jet in circumferential direction. These observations by high-speed cross-schlieren imaging were validated by the microphone measurements.

关键词： Screech Tone Aeroacoustics Directivity Frequency Spectrum Underexpanded Circular Jet Schlieren Imaging

Deobfuscation,unpacking,and decoding of obfuscated malicious JavaScript for machine learning models detection performance improvement

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

CAAI Transactions on Intelligence Technology 2020年第3期5卷 184-192页

作者： Samuel Ndichu Sangwook kim Seiichi ozawa Graduate School of Engineering Kobe UniversityKobe CityJapan Center for Mathematical and Data Sciences Kobe UniversityKobe CityJapan

Obfuscation is rampant in both benign and malicious JavaScript(JS)*** generates an obscure and undetectable code that hinders comprehension and ***,accurate detection of JS codes that masquerade as innocuous scripts is *** existing deobfuscation methods assume that a specific tool can recover an original JS code *** a multi-layer obfuscation,general tools realize a formatted JS code,but some sections remain *** the detection of such codes,this study performs Deobfuscation,Unpacking,and Decoding(DUD-preprocessing)by function redefinition using a Virtual Machine(VM),a JS code editor,and a python int_to_str()function to facilitate feature learning by the FastText *** learned feature vectors are passed to a classifier model that judges the maliciousness of a JS *** performance evaluation,the authors use the Hynek Petrak’s dataset for obfuscated malicious JS codes and the SRILAB dataset and the Majestic Million service top 10,000 websites for obfuscated benign JS *** then compare the performance to other models on the detection of DUD-preprocessed obfuscated malicious JS *** experimental results show that the proposed approach enhances feature learning and provides improved accuracy in the detection of obfuscated malicious JS codes.

关键词： JavaScript editor python

Successful treatment with laparoscopic surgery and sequential multikinase inhibitor therapy for hepatocellular carcinoma:A case report

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastrointestinal Surgery 2022年第3期14卷 260-267页

作者： Yutaka Endo Motohide Shimazu Tadayuki Sakuragawa Yusuke Uchi Motonori Edanami ken Sunamura Soji ozawa Naokazu Chiba Shigeyuki kawachi Department of Surgery Tama Kyuryo HospitalTokyo 1940297Japan Department of Digestive and Transplantation Surgery Tokyo Medical University Hachioji Medical CenterTokyo 1930998Japan

BACkGROUND Hepatocellular carcinoma(HCC)with massive portal vein tumor thrombosis(PVTT)and distant metastasis is considered ***,due to recent developments in systemic chemotherapy,successful cases of conversion therapy for unresectable diseases have been ***,we report a successful multidisciplinary approach for treatment of multi-visceral recurrence with sequential multikinase inhibitor and laparoscopic *** SUMMARY A 63-year-old woman with chronic hepatitis B virus infection was diagnosed with ***,she underwent two rounds of laparoscopic partial hepatectomy,laparoscopic left adrenalectomy,and transcatheter arterial chemoembolization plus sorafenib for *** years after initial hepatectomy,she presented with a 43-mm mass in the spleen and tumor thrombus involving the main portal vein trunk with *** liver function was Child-Pugh B(8),and protein induced by vitamin k absence or antagonist II(PIVkA II)levels were elevated up to 46.291 mAU/*** initial treatment with regorafenib for three months was unsuccessful,the patient was administered *** months post-treatment,there was no contrast enhancement of PVTT or splenic *** was discontinued due to severe ***,splenic metastasis became viable,and PIVkA II ***,hand-assisted laparoscopic splenectomy was *** experienced no clinical recurrence 14 mo after *** Conversion surgery after successful multikinase inhibitor treatment might be considered an effective treatment option for advanced HCC.

关键词： Hepatocellular carcinoma Lenvatinib Portal vein Venous thrombosis Splenic neoplasms Case report

Optogenetic Control of Phosphatidylinositol (3,4,5)-Triphosphate Production by Light-Sensitive Cryptochrome Proteins on the Plasma Membrane

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 Journal of Chemistry 2021年第5期39卷 1240-1246页

作者： Lingzhi Yang Takeaki ozawa Haifeng Dong Xueji Zhang School of Pharmaceutical Sciences Health Science CenterShenzhen UniversityShenzhenGuangdong 518060China Deportment of Chemistry School of ScienceThe University of Tokyo7-3-1 HongoBunkyo-kuTokyo 113-0033Japan School of Biomedical Engineering Health Science CenterShenzhen UniversityShenzhenGuangdong 518060China

Phosphatidylinositol(3,4,5)-triphosphate(PIP3),acting as a fundamental second messenger,is emerging as a promising biomarker for disease diagnosis and ***,the real time analysis of phosphoinositide in living cells remains a key challenge owing to the low basal abundance and its fast metabolic ***,we design an optogenetic system that uses light sensitive protein-protein interaction between Arabidopsis cryptochrome 2(CRY2)and CIB1 to spatiotemporally visualize the PIP3 production with sub-second *** this system,a CIBN is anchored on the plasma membrane,whereas a CRY2 fused with a constitutively active PI3-kinase(acPI3k)would be driven from the cytosol to the membrane by the blue-light-activated CRY2-CIB1 interaction upon light *** PIP3 production is visualized via a fused fluorescent protein by the translocation of a Pleckstrin Homology(PH)domain(GRP1)from the cytosol to the plasma membrane with high *** demonstrated the fast dynamics and reversibility of the optogenetic system initiated PIP3 synthesis on the plasma ***,the real-time cell movements were also observed upon localized light *** established optogenetic method provides a novel spatiotemporal strategy for specific PIP3 visualization,which is beneficial to improve the understanding of PIP3 functions.

关键词： Protein-protein interactions Protein engineering Fluorescent probes Optogenetic control Phosphatidylinosito (3,4,5)-triphosphate

Additive Manufacturing of Metal Micro-ring and Tube by Laser-Assisted Electrophoretic Deposition with Laguerre-Gaussian Beam

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nanomanufacturing and Metrology 2021年第4期4卷 271-277页

作者： kenta Nakazawa Syunya ozawa Futoshi Iwata Graduate School of Integrated Science and Technology Shizuoka University3-5-1 Johoku.Naka-kuHamamatsu 432-8561.Japan Graduate School of Medical Photonics Shizuoka University3-5-1 JohokuNaka-kuHamamatsu 432-8011Japan Research Institute of Electronics Shizuoka University3-5-1 JohokuNaka-kuHamamatsu 432-8011Japan

We report a method for laser-assisted electrophoretic deposition using a Laguerre-Gaussian beam for maskless patterning of metal rings and *** are structures of utmost importance,particularly in photonic *** nanoparticles,which are gathered in a colloidal solution by a laser trapping technique,are deposited on a substrate via *** deposition pattern is dependent on the focused spot shape during laser *** intensity distribution of the Laguerre-Gaussian beam is *** with different inner diameters can be fabricated by varying the topological charge of the Laguerre-Gaussian *** equivalent inner diameters of the deposited rings with topological charges of 1,3,and 5 were 0.30,0.78,and 1.45μm,*** inner diameter of the deposited ring with a topological charge of 1 was smaller than the wavelength of the laser beam(532 nm).A tube was also fabricated with a topological charge of 3 by vertical displacement of the deposition *** deposition technology developed here using Laguerre-Gaussian beam will contribute to advancements in the fabrication of photonic and nano-fluidic devices.

关键词： Additive manufacturing Laguerre-Gaussian beam Laser trapping Maskless fabrication Electrophoretic deposition