检索结果-南通市图书馆

Mechanism of Pb Removal from Brass Scrap by Compound Separation Using Ca and NaF

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Nonferrous Metallurgy 2018年第1期7卷 1-7页

作者： Hidekazu Sueyoshi Kousaku Yamada Masashi Miyazaki Takuya Okada Nobuyuki Ashie yoshiharu kousaka Graduate School of Science and Engineering Kagoshima University Kagoshima Japan Kyushu Tabuchi Co. Ltd. Kirishima Japan San-Etsu Metals Co. Ltd. Tonami Japan

The Mechanism of Pb removal from brass scrap by compound separation using Ca and NaF addition was investigated. Because large Ca-Pb compound particles formed by Ca addition rise to the surface of the molten brass, they can be skimmed off from the molten brass. However, fine Ca-Pb compound particles remain in the molten brass because of low buoyancy. By subsequent NaF addition, the reaction between Ca-Pb compound and NaF takes place at their contact regions, resulting in the formation of solid CaF2, liquid Pb and Na gas. Pb is mainly present at the Ca-Pb compound-CaF2 interface. CaF2 acts as a binder for aggregation of fine Ca-Pb compound particles, resulting in the formation of light and large composite compounds, which rise to the surface of the molten brass. A high Pb removal rate is achieved by skimming off.

关键词： Lead Removal Brass Scrap Calcium Sodium Fluoride Compound Separation

Detecting somatisation disorder via speech:introducing the Shenzhen Somatisation Speech Corpus

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Intelligent Medicine 2024年第2期4卷 96-103页

作者： Kun Qian Ruolan Huang Zhihao Bao Yang Tan Zhonghao Zhao Mengkai Sun Bin Hu Björn W.Schuller yoshiharu Yamamoto Key Laboratory of Brain Health Intelligent Evaluation and Intervention Ministry of EducationBeijing Institute of TechnologyBeijing 100081China School of Medical Technology Beijing Institute of TechnologyBeijing 100081China The First School of Clinical Medicine Southern Medical UniversityGuangzhouGuangdong 510515China Department of Neurology Shenzhen University General HospitalShenzhenGuangdong 518055China Group on Language Audio&MusicImperial College LondonLondon SW72AZUK Embedded Intelligence for Health Care and Wellbeing University of AugsburgAugsburg 86159Germany Educational Physiology Laboratory Graduate School of EducationThe University of TokyoTokyo 113-0033Japan

Objective Speech recognition technology is widely used as a mature technical approach in many *** the study of depression recognition,speech signals are commonly used due to their convenience and ease of *** speech recognition is popular in the research field of depression recognition,it has been little studied in somatisation disorder *** reason for this is the lack of a publicly accessible database of relevant speech and benchmark *** this end,we introduced our somatisation disorder speech database and gave benchmark *** By collecting speech samples of somatisation disorder patients,in cooperation with the Shenzhen University General Hospital,we introduced our somatisation disorder speech database,the Shenzhen Somatisation Speech Corpus(SSSC).Moreover,a benchmark for SSSC using classic acoustic features and a machine learning model was proposed in our *** To obtain a more scientific benchmark,we compared and analysed the performance of different acoustic features,i.e.,the full ComPare feature set,or only Mel frequency cepstral coefficients(MFCCs),fundamental frequency(F0),and frequency and bandwidth of the formants(F1-F3).By comparison,the best result of our benchmark was the 76.0%unweighted average recall achieved by a support vector machine with formants F1–*** The proposal of SSSC may bridge a research gap in somatisation disorder,providing researchers with a publicly accessible speech *** addition,the results of the benchmark could show the scientific validity and feasibility of computer audition for speech recognition in somatization disorders.

关键词： Somatisation disorder Machine learning Healthcare Computer audition

GAS SORPTION,DIFFUSION AND PERMEATION OF ORDERED POLYMERIC MEMBRANES

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 Polymer Science 2000年第4期18卷 301-307页

作者： yoshiharu Tsujita Polymeric Materials Course Department of Materials Science and Engineering. Nagoya Institute of Technology Gokiso-cho Showa-ku Nagoya 466-8555 Japan

He, CO_2, O_2, N_2, CH_4, C_3H_8, and t-C_4H_(10) gas permeability coefficients and diffusion coefficients of poly(4-methylpentene-1) (PMP) with various degrees of crystallization were plotted against the degree of crystallization. The plotdemonstrated a linear relationship. The gas permeability coefficient and diffusion coefficient of pure amorphous and purecrystalline PMPs were evaluated by a linear extrapolation to zero and 100% crystallinity, respectively. The relationshipbetween the diffusion coefficient of crystalline parts of PMP and the kinetic diameter of penetrant gases was *** polystyrene (SPS) could exist as δ form crystals complexed with organic solvents such as benzene, toluene,xylene, and ethylbenzene. The mesophase of SPS is prepared by annealing the δ form of crystalline complexes at a certaintemperature for 1 h. The desorption of solvent during annealing almost does not result in changes of both the conformation ofbackbone chains and the crystal lattice. We could prepare the mesophase containing molecular cavities with the size andshape of the organic solvent molecules. The mesophase could sorb the same solvent after the manner of Langmuir sorption atlow vapor pressure range while this would not be the case for solvents of different size and shape. This suggests a molecularrecognition of organic solvent, and mesophase SPS might be useful for separation membrane and adsorptive material.

关键词： Gas sorption Diffusion Poly(4-methyl pentene-l) Molecular recognition

Fracture theory based on the concept of characteristic fracture length of materials

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

Science China(Physics,Mechanics & Astronomy) 2009年第12期52卷 2041-2046页

作者： MUTOH yoshiharu Department of Safety Engineering Nagaoka University of Technology

Fracture theory is a classic,but not a well-dealt with,difficulty in solid mechanics. This paper has proposed the concept of characteristic fracture length of materials from the fact that fracture happens with area failure rather than point failure in materials. A unified theory is then proposed,which can be applied both to smooth and defected materials (whether with micro or macro defects). Brittle fracture tests with specimens of different sizes of holes are carried out to examine the fracture theory. It is found that the fracture stresses obtained by experiments agree well with those predicated by the presented fracture theory. Though the brittle fracture is the focus of the paper,the concept of characteristic length can be easily extended to fatigue or other failure problems.

关键词： fracture theory strength characteristic length size effect brittle fracture

Retrieving structural information from scattering and attenuation data of transparent wood and(Nano)paper

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

Journal of Bioresources and Bioproducts 2021年第3期6卷 187-194页

作者： yoshiharu Nishiyama Univ.Grenoble Alpes CNRSCERMAVGrenoble38000France

Over the last 15 years,significant number of reports on transparent paper and transparent wood appeared in the *** light scattering data or transmission data are often given to describe the optical performance of the *** addition,the data also contains structural information that can be further analyzed based on scattering *** of the data are re-analyzed herein from structural analysis point of view related to the scattering *** analysis on the wavelength dependent optical density of nanopaper suggested that the scatterers are not isolated voids or microfibrils but rather large submicrometric and structural *** dependence of transparent wood scattering suggests the scattering units of a few micrometers such as cell wall are at the origin of high haze.

关键词： Light scattering Transparent wood Nanocellulose

PREDICTING RELEVANT EMPTY SPOTS IN SOCIAL INTERACTION

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 Systems Science & Complexity 2008年第2期21卷 161-171页

作者： yoshiharu MAENO Yukio OHSAWA Graduate School of Systems Management Tsukuba University School of Engineering University of Tokyo

An empty spot refers to an empty hard-to-fill space which can be found in the records of the social interaction, and is the clue to the persons in the underlying social network who do not appear in the records. This contribution addresses a problem to predict relevant empty spots in social interaction. Homogeneous and inhomogeneous networks are studied as a model underlying the social interaction. A heuristic predictor function method is presented as a new method to address the problem. Simulation experiment is demonstrated over a homogeneous network. A test data set in the form of market baskets is generated from the simulated communication. Precision to predict the empty spots is calculated to demonstrate the performance of the presented method.

关键词： Communication empty spot predictor function social interaction social network.

DATA CRYSTALLIZATION APPLIED FOR DESIGNING NEW PRODUCTS

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

Journal of Systems Science and Systems Engineering 2007年第1期16卷 34-49页

作者： Kenichi HORIE yoshiharu MAENO Yukio OHSAWA School of Engineering the University of Tokyo Graduate School of System Management the University of Tsukuba maeno

It is only the observable part of the real world that can be stored in data. For such incomplete and ill-structured data, data crystallizing aims at presenting the hidden structure among events including unobservable events. This is realized by data crystallization, where dummy items, corresponding to potential existence ofunobservable events, are inserted to the given data. These dummy items and their relations with observable events are visualized by applying KeyGraph to the data with dummy items, like the crystallization of snow where dusts are involved in the formation of crystallization of water molecules. For tuning the granularity level of structure to be visualized, the tool of data crystallization is integrated with human＇s process of understanding significant scenarios in the real world. This basic method is expected to be applicable for various real world domains where previous methods of chance-discovery lead human to successful decision making. In this paper, we apply the data crystallization with human-interactive annealing （DCHA） to the design of products in a real company. The results show its effect to industrial decision making.

关键词： Chance discovery data crystallization unobservable events human machine interaction,design

Does flexible small-diameter colonoscope reduce insertion pain during colonoscopy?

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 Gastroenterology 2000年第5期6卷 659-663页

作者： yoshiharu Uno Akihiro Munakata First Department of Medicine School of MedicineHirosaki University036- 8216Japan

AIM It is well known that colonoscopy can bedifficult due to abdominal pain induced duringcolonoscope insertion,if sedative agents are ***,an extra-flexible,small-diameter colonoscope(CF-SV,Olympus Inc.,Japan)was developed in order to improve safetyand *** aim of this study was toaccess the usefulness of the *** One hundred patients undergoingsigmoidoscopy were recruited and colonoscopywas performed by one ***,a routine-type colonoscope(CF-2301)was inserted into the colon *** the patient complained ofabdominal pain(even if mild),the scope wasnot advanced further and was withdrawn afterthe anatomic location of its tip was ***,the CF-SV was inserteduntil it reached the cecun or the site whereabdominal pain *** abdominalsurgery and abdominal disease were consideredas unfavorable factors(UF)and the relationshipbetween abdominal pain and UF,age and genderwere ***,the colonicinsertion pressures in 36 patients with abdominalpain were measured with a force *** Thirty-four cases(34%)felt no painwith the CF-2301 and successful pancolon-0scopies to the cecum were ***-six cases(66%)complained of abdominal *** procedure was painless for 47% of men and24% of women,*** CF-2301 scopefailed to reach the sigmoid-descending colon junctions in 59(89.4%)of the 66 patientscomplaining of abdominal ***,CF-SVreached proximal area in 94.9% of those whofailed with *** median pressure forpain-inducing was 700 g/cm^*** Unsedated patients with UFwere prone to complain of pain when thestandard-type CF-2301 scope was *** developed extra-flexible CF-SV is usefulfor the aged and for those with UF or being proneto suffer from abdominal *** agentsmay be unnecessary if this new type ofcolonoscope is used.

关键词： colonoscopy abdominal pain flexible colonoscope insertion pressure unfavorable factors sigmoidoscopy

Duodenal intussusception secondary to ampullary adenoma: 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 Clinical Cases 2019年第14期7卷 1857-1864页

作者： Masaaki Hirata yoshiharu Shirakata Kenya Yamanaka Department of Surgery Hyogo Prefectural Amagasaki General Medical CenterAmagasakiHyogo 660-0892Japan

BACKGROUND Because the duodenum is fixed onto the retroperitoneum, duodenal intussusception is usually impossible except in cases of malrotational abnormality. Although cases of duodenal intussusception without malrotational abnormalities have been reported, it is unclear whether they constitute true intussusception or simple mucosal prolapse. CASE SUMMARY A 66-year-old woman presented with whole-body edema and malaise. Blood analysis indicated severe anemia and cholestasis. Endoscopic examination revealed a pedunculate polyp on the second part of the duodenum that migrated distally with mucosal elongation. Computed tomography showed duodenal intussusception. A tumor as the lead point and retroperitoneal structure, including the head of the pancreas and fat, invaginated beyond the duodenojejunal flexure. She was diagnosed with ampullary adenoma caused repeated intussusception that reduced spontaneously and underwent pancreaticoduodenectomy. Laparotomy showed tumor prolapse beyond the duodenojejunal flexure without intussusception. There was no evidence of malrotational abnormality. She was discharged with no complications. CONCLUSION We report true duodenal intussusception without malrotational abnormality. This phenomenon was also associated with mucosal prolapse.

关键词： Duodenal intussusception Mucosal prolapse Ampullary adenoma Case report