检索结果-南通市图书馆

Self-calibration and Compensation of Setting Errors for Surface Profile Measurement of a Microstructured Roll Workpiece

引用

Chinese Journal of Mechanical Engineering 2014年第1期27卷 14-22页

作者： GAO Wei XU Bin TAKEISHI Toshiki SHIMIZU Yuki ito So Department of Nanomechanics Tohoku University School of Manufacturing Science and Engineering Sichuan University

Microstructured roll workpieces have been widely used as functional components in the precision industries. Current researches on quality control have focused on surface profile measurement of microstructured roll workpieces, and types of measurement systems and measurement methods have been developed. However, low measurement efficiency and low measurement accuracy caused by setting errors are the common disadvantages for surface profile measurement of microstructured roll workpieces. In order to shorten the measurement time and enhance the measurement accuracy, a method for self-calibration and compensation of setting errors is proposed for surface profile measurement of microstructured roll workpieces. A measurement system is constructed for the measurement, in which a precision spindle is employed to rotate the roll workpiece and an air-bearing displacement sensor with a micro-stylus probe is employed to scan the microstructured surface of the roll workpiece. The resolution of the displacement sensor is 0.14 nm and that of the rotary encoder of the spindle was 0.15r~. Geometrical and mathematical models are established for analyzing the influences of the setting errors of the roll workpiece and the displacement sensor with respect to the axis of the spindle, including the eccentric error of the roll workpiece, the offset error of the sensor axis and the zero point error of the sensor output. Measurement experiments are carded out on a roll workpiece on which periodic microstructures are a period of 133 i^m along the circumferential direction. Experimental results demonstrate the feasibility of the self-compensation method. The proposed method can be used to detect and compensate the setting errors without using any additional accurate artifact.

关键词： measurement profile setting error self-calibration compensation microstructure roll workpiece

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Role of androgen receptor in prostate cancer

引用

Asian Journal of Andrology 1999年第3期1卷 81-85页

作者： Hiroyoshi Suzuki Haruo ito Department of Urology Chiba University School of Medicine I-8-I Inohana Chuo-ku Chiba-shi Chiba 260-8670 JapanDepartment of Urology Chiba University School of Medicine I-8-I Inohana Chuo-ku Chiba-shi Chiba 260-8670 Japan

The growth of prostate cancer is sensitive to androgen, and hormonal therapy has been used for treatment of ad-vanced cancer. About 80% of prostate cancers initially respond to hormonal therapy, howerver, more than half of the re-sponders gradually become resistant to this therapy. Changes in tumors from an androgen-responsive to an androgen-unre-sponsive state have been widely discussed. Since androgen action is mediated by androgen receptor (AR), abnormalitiesof AR is believed to play an important role of the loss of androgen responsiveness in prostate cancer. This article focusedon the role of AR in the progression of prostate cancer. (Asian J Androl 1999 Sep; 1: 81-85)

关键词： androgen receptors prostatic neoplasms genetic change methylation

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Molecular Dynamics Simulation of Bombardment of Hydrogen Atoms on Graphite Surface

引用

Communications in Computational Physics 2008年第8期4卷 592-610页

作者： A.ito H.Nakamura Department of Physics Graduate School of ScienceNagoya UniversityFuro-choChikusa-kuNagoya 464-8602Japan Department of Simulation Science National Institute for Fusion Science322-6 Oroshi-choToki 509-5292Japan

The new potential model of interlayer intermolecular interaction was proposed to represent“ABAB”stacking of *** bombardment of hydrogen atoms on the graphite surface was investigated using molecular dynamics *** the first graphene fromthe surface side was broken,the hydrogen atoms caused the following *** the case of the incident energy of 5 eV,many hydrogen atoms were adsorbed on the front of the first *** the case of the incident energy of 15 eV,almost all hydrogen atoms were reflected by the first *** the case of the incident energy of 30 eV,the hydrogen atoms were adsorbed between the first and second *** radial distribution function and the animation of the MD simulation demonstrated that the graphenes were peeled off one by one,which is called graphite *** C2H2 was generated in such chemical *** the other yieldedmolecules often had chain structures terminated by the hydrogen *** erosion yield increased linearly with time.

关键词： Plasma surface interaction chemical sputtering graphite graphene hydrogen atom

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Long-Term Durability and Reactivation of Thermochemical Heat Storage Driven by the CaO/Ca(OH)<sub>2</sub>Reversible Reaction

引用

Journal of Materials Science and Chemical Engineering 2017年第11期5卷 23-32页

作者： Kazuki Kuwata Takehiro Esaki Daichi Iwase Hiroyuki ito Shijie Li Xixian Yang Hongyu Huang noriyuki Kobayashi Nagoya University Nagoya Japan Integrated Technology Center Guangzhou Institute of Energy Conversion Chinese Academy of Sciences Guangzhou China

Thermochemical heat storage is a promising technology for improving thermal energy efficiency. To investigate the durability of the CaO/Ca(OH)2 reaction and develop a reactivation method, repetitive charging/discharging operation of a packed bed reactor with a thick packed bed was conducted, and variations in the discharging behavior, final conversion, and reactant activity were investigated. Owing to the formation of a deactivated sintered reactant block, the discharging time halved and the final conversion ratio decreased by the 53rd discharging operation. To enhance durability, a reactivation method using high-pressure vapor was implemented during the 54th discharging operation. Following reactivation, the final conversion increased 15%, and the discharging time tripled when compared with the discharging operation before reactivation, confirming the success of this simple reactivation method.

关键词： Thermochemical Heat Storage Durability Repetitive Reaction Reactivation CaO/Ca(OH)2 Reaction

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Diffusion-weighted MRI in abdominal oncology:Clinical applications

引用

World Journal of Gastroenterology 2010年第7期16卷 832-836页

作者： Reiji Sugita Kei ito Naotaka Fujita Shoki Takahashi Department of Radiology Sendai City Medical CenterSendai 983-0824Japan Department of Gastroenterology Sendai City Medical CenterSendai 983-0824Japan Department of Diagnostic Radiology Graduate School of MedicineTohoku UniversitySendai 980-8574Japan

Diffusion-weighted magnetic resonance imaging(DWI) provides image contrast that is different from that obtained by conventional magnetic resonance *** previously,DWI has been used to evaluate various diseases of the central nervous system,several technical advances have expanded the clinical applications of DWI beyond the central nervous *** a result,many reports have been published on the use of DWI in abdominal ***,abdominal DWI has now being focused on evaluation of patients with abdominal *** can be used for pretreatment tumor detection,characterization including predicting tumor response to therapy,monitoring tumor response during therapy,and follow-up study after treatment to detect possible tumor recurrence.

关键词： Diffusion weighted magnetic resonance imaging Abdominal neoplasms

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Design and Development of Oblique-Incident Interferometer for Form Measurement of Hand-Scraped Surfaces

引用

Nanomanufacturing and Metrology 2021年第2期4卷 69-76页

作者： So ito Daiki Kameoka Kimihisa Matsumoto Kazuhide Kamiya Department of Intelligent Robotics Faculty of EngineeringToyama Prefectural University5180KurokawaImizuToyama939-0398Japan

Precision flat surfaces finished by hand-scraping are extensively used in the sliding parts of precision positioning systems or the surface plates of precision measuring *** hand-scraped surfaces are employed to improve the flatness of the machined surfaces and the motion accuracy of the *** numerous depressions of micrometer-scale depth on a scraped surface are thought to prevent wringing and improve the lubrication properties by forming oil *** measurement of the micrometer-scale features of a hand-scraped surface is one of the reasonable methods for investigating its effect on the motion accuracy of the positioning systems or the lubrication properties of the sliding *** a hand-scraped surface is a rough surface composed of micrometric complex features,it is difficult to conduct precision measurement of the three-dimensional surface form using conventional measurement instruments,such as vertical-incident interferometers or stylus-type *** this study,an oblique-incident interferometer based on Abramson interferometry is introduced to measure the form of a rough surface produced by *** this technique can detect high-intensity reflected light on a rough surface,it allows the measurement of the form of the hand-scraped surface in noncontact *** order to shorten the measurement time,the form calculation based on a five-step phase shifting method was introduced.

关键词： Oblique-incident interferometer Abramson interferometry Hand-scraped surface Rough surface Surface form measurement

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Surface Emitting THz Wave Parametrical Oscillator Using MgO：LiNbO3

引用

Chinese Physics Letters 2007年第11期24卷 3153-3156页

作者：张显斌施卫 T. Ikari H. ito Department of Physics Xi'an University of Technology Xi'an 710048 Photo Dynamics Research Center RIKEN 519-1399 Aramaki-Aoba Sendai 980-8577 Japan

Room-temperature operation terahertz （THz） wave source is demonstrated using three MgO：LiNbO3 crystals which have a noncollinear arrangement. The experimental results show that the THz wave can be tunable from 0.8 THz to 3.0 THz, and the peak energy output is 103 pJ/pulse at 1.5 THz. The noncoilinear cavity configuration makes the THz beam have Gaussian-like spatial distribution, small divergence angle, perpendicularly eradiated from the crystal surface. The beam quality factor M2 is measured to be Mx^2 = 1.15, Mx^2 = 1.25 for characterizing the THz wave beam. Experiments also show that the THz beam can be focused by using a polyethylene lens, and the focal spot size is close to the diffraction limit.

关键词： coated conductor buffer layer self-epitaxy CeO2

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Influence of normal to high stroke volume on congestive heart failure development after transcatheter aortic valve implantation:case series

引用

Journal of Geriatric Cardiology 2021年第1期18卷 83-88页

作者： Tomoko Tomioka Tomohiro ito Ryokichi Takahasi Shuhei Tanaka Department of Cardiology South Miyagi Medical CenterShibataJapan

Aortic stenosis(AS)is the most common valvular disease in the older adults'population,and its prevalence will likely continue to increase with the aging society.[1]Surgical aortic valve replacement(SAVR)for elderly patients is known as a high-risk procedure.[2-4]Transcatheter aortic valve implantation(TAVI)is a reasonable alternative to SAVR for older and inoperable patients with AS,and TAVI significantly improves outcomes in elderly patients with severe AS and serious comorbidities,[5,6]TAVI achieves a 20%relative reduction in mortality compared with SAVR.

关键词： aortic mortality implantation

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Added value of indocyanine green fluorescence imaging in liver surgery

引用

Hepatobiliary & Pancreatic Diseases International 2022年第4期21卷 310-317页

作者： Nobuyuki Takemura Kyoji ito Fuyuki Inagaki Fuminori Mihara Norihiro Kokudo Department of Surgery Hepato-Biliary Pancreatic Surgery DivisionNational Center for Global Health and Medicine1-21-1 ToyamaShinjyuku-kuTokyo162-8655Japan

Recently,indocyanine green(ICG)fluorescence imaging has been widely used as a substitute for cholangiography in hepatobiliary surgery,to detect hepatic tumors,for accurate anatomical hepatectomy,and to increase the safety and accuracy of minimally invasive(laparoscopic and robotic)*** clinical relevance of this method has been increasing gradually,as new procedures develop in this *** important roles and the latest added value of ICG fluorescence imaging in liver surgery are discussed in this report.

关键词： Florescence imaging Indocyanine green Hepatocellular carcinoma Colorectal metastasis Hepatectomy Minimally invasive surgery

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Recent advances of high-pressure generation in a multianvil apparatus using sintered diamond anvils

引用

Geoscience Frontiers 2011年第1期2卷 101-106页

作者： Shuangmeng Zhai Eiji ito Key Laboratory of Orogenic Belts and Crustal Evolution Ministry of Education School of Earth and Space Sciences Peking University Beijing 100871 China Institute for Study of the Earth＇s Interior Okayama University Misasa Tottori-ken 682-0193 Japan

The tried and tested multianvil apparatus has been widely used for high-pressure and hightemperature experimental studies in Earth science. As a result, many important results have been obtained for a better understanding of the components, structure and evolution of the Earth. Due to the strength limi- tation of materials, the attainable multianvil pressure is generally limited to about 30 GPa （corresponding to about 900 km of the depth in the Earth） when tungsten carbide cubes are adopted as second-stage anvils. Compared with tungsten carbide, the sintered diamond is a much harder material. The sintered diamond cubes were introduced as second-stage anvils in a 6--8 type multianvil apparatus in the 1980s, which largely enhanced the capacity of pressure generation in a large volume press. With the development of material synthesis and processing techniques, a large sintered diamond cube （14 ram） is now available. Recently, maximum attainable pressures reaching higher than 90 GPa （corresponding to about 2700 km of the depth in the Earth） have been generated at room temperature by adopting 14-mm sintered diamond anvils. Using this technique, a few researches have been carried out by the quenched method or combined with synchrotron radiation in situ observation. In this paper we review the properties of sintered diamond and the evolu- tion of pressure generation using sintered diamond anvils. As-yet unsolved problems and perspectives for uses in Earth Science are also discussed.

关键词： Pressure generation Sintered diamond anvil Multianvil apparatus

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：