检索结果-南通市图书馆

Identification of Heat Transfer Coefficients by Use Conditions of Quenching Oil

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

材料热处理学报 2004年第5期25卷 453-456页

作者： Katsumi Ichitani Lubricants Research Laboratory Idemitsu Kosan Co. Ltd. Chiba Japan

Heat transfer coefficients of the quench medium are necessary for heat-treatment simulation. Cooling characteristics of quenching oil vary with kinds and usage greatly. Users are selecting oil solutions that come up to their desired hardness and quenching distortion requirements. In particular cooling performance rises by agitation and decompression. Therefore we identified a heat transfer coefficient by usage and kinds of quenching oil. Cooling characteristics are different greatly by a kind of quenching oil. A difference of a cooling characteristic by a kind of oil depends on a temperature range of a boiling stage and the maximum heat transfer coefficient mainly. On the other hand, in a convection stage, there are few changes in a boiling stage. Even if quenching oil temperature is changed, heat transfer coefficients do not change greatly. When quenching oil stirred, heat transfer coefficients of vapor blanket stage and a convection stage rise, but there are a few changes in a boiling stage. When quenching oil is decompressed a temperature range of a high heat transfer coefficient moves to the low temperature side. In addition, a heat transfer coefficient in a vapor blanket stage comes down. For precision improvement of heat-treatment simulation, it is important that the heat transfer coefficient is calculated in conformity to the on-site use reality.

关键词：传热系数淬火油热处理冷却曲线

DEVELOPMENT OF DIRECT UPGRADING PROCESS FOR HEAVY CRUDE OIL

在线全文

学校读者我要写书评

暂无评论

石油学报（石油加工） 2001年第1期17卷 101-106页

作者： Masahiro YOSHIDA Nobuyuki OTA Technical cooperation project research & development dept. Idemitsu kosan Co LTD 24-4 Anesaki-Kaigan Ichihara Chiba 299-0107 Japan Central research lab. Idemitsum kosan Co LTD1280Kaini-Izumi Sodegaura-City Chiba 299-0293Japan

The direct upgrading process from heavy crude oil to sweet and light oil (IKC process) has been deve loped for about 10 years in Idemitsu kosan. Compared with conventional refinery scheme consisting of YR HDS, VGOHYC and so on, the new refinery scheme combined with IKC process and Topper was always economically feasible with lower cost and smaller energy consumption. In the existing refinery of no middle distillate HDS and residue HDS of HYC plants to supplement IKC process is expected to be one of the efficient methods to cope with the environmental regulations.

关键词：重质油直接浓缩工艺 IKC 环境管理原油处理

Standardization of New Sliver Probe for Cooling Power Test of Polymer Quenchant

在线全文

学校读者我要写书评

暂无评论

材料热处理学报 2004年第5期25卷 447-452页

作者： Hideo YOKOTA Katsumi ICHITANI Kazuyoshi YAMAMOTO Hiroyuki IKUMI Yasufumi SUGIURA Michiharu NARAZAKI Nippon Oil Corporation Yokohama JapanIdemitsu Kosan Co. Ltd. Chiba JapanDaido Chemical Industry Co. Ltd. Osaka JapanSanshin Kagaku Kogyo Co. Ltd. Tokyo JapanNippon Grease Co. Ltd. Osaka JapanUtsunomiya University Utsunomiya Japan

Technical committee for Japanese industrial standard of heat treating oils has studied on the new method for testing cooling power of aqueous quenchants. This method employed the cooling curve test of a new sliver rod probe, which has a metal-sheathed thermocouple at its geometrical center. The experimental study has clarified that this probe has the higher sensitivity and excellent durability. In order to standardize this probe for cooling power test of aqueous quenchants, the repeatability and reproducibility of test results etc. have been studied. D.O.P. (Di-2-ethylthexyl Phthalate) was used as reference quenching fluid for initial calibration and for periodic calibration verification of the probe and system. In addition, 10% brine was used to check the response capability of the probe and system to the sudden change of temperature. These procedures are established according to the experimental investigation. This new test method is going to be built in the revised version of JIS K 2242 "Heat treating oils" as the cooling power test method for aqueous quenchants.

关键词：聚合物淬火剂冷却动力试验冷却曲线银探测器

Development of New Sliver Probe for Cooling Power Test of Polymer Quenchants

在线全文

学校读者我要写书评

暂无评论

材料热处理学报 2004年第5期25卷 437-442页

作者： Michiharu NARAZAKI Mamoru TAJIMA Shigeru ASADA Katsumi ICHITANI Hideo YOKOTA Mitsugu TANAKA Youichi WATANABE Utsunomiya University Utsunomiya JapanKanagawa University Yokohama JapanNippon Grease Co. Ltd. Osaka JapanIdemitsu Kosan Co. Ltd. Chiba JapanNippon Oil Corporation Yokohama JapanNissho Engineering Co. Ltd. Kobe JapanNissan Motor Co. Ltd. Yokohama Japan

Working group on cooling power test of quenchants of Japanese Heat Treatment Society has studied on the new method for testing cooling power of aqueous quenchants. This method employed the cooling curve test of a new sliver rod probe, which has a metal-sheathed thermocouple at its geometrical center. The experimental study has clarified that the new silver probe has more excellent durability than the JIS silver probe employed for cooling power test of heat treating oils (JIS K 2242) and an aluminum alloy probe. Good repeatability and reproducibility of the cooling curves during polymer quenching have been confirmed. This new method is useful especially for cooling power test of aqueous quenchants used for solution heat treatment of aluminum alloys. This new silver rod probe is expected to be adopted for the revised version of JIS K 2242 as the cooling power test method for aqueous quenchants.

关键词：聚合物淬火剂动力试验冷却曲线银探测器

Identification of Heat Transfer Coefficients by Use Conditions of Quenching Oil

在线全文

学校读者我要写书评

暂无评论

Identification of Heat Transfer Coefficients by Use Conditio...

Carrier Dynamics of p-n Heterojunction Organic Photovoltaic Cells Analyzed by a Novel Graphic Representation of Impedance Spectroscopy

14～(th) Congress of International Federation for Heat Treament and Surface Engineering

作者： Katsumi Ichitani Lubricants Research Laboratory Idemitsu Kosan Co.Ltd.ChibaJapan

＜正＞ Heat transfer coefficients of the quench medium are necessary for heat-treatment simulation. Cooling characteristics of quenching oil vary with kinds and usage greatly. Users are selecting oil solutions that come up to their desired hardness and quenching distortion requirements. In particular cooling performance rises by agitation and decompression. Therefore we identified a heat transfer coefficient by usage and kinds of quenching oil. Cooling characteristics are different greatly by a kind of quenching oil. A difference of a cooling characteristic by a kind of oil depends on a temperature range of a boiling stage and the maximum heat transfer coefficient mainly. On the other hand, in a convection stage, there are few changes in a boiling stage. Even if quenching oil temperature is changed, heat transfer coefficients do not change greatly. When quenching oil stirred, heat transfer coefficients of vapor blanket stage and a convection stage rise, but there are a few changes in a boiling stage. When quenching oil is decompressed a temperature range of a high heat transfer coefficient moves to the low temperature side. In addition, a heat transfer coefficient in a vapor blanket stage comes down. For precision improvement of heat-treatment simulation, it is important that the heat transfer coefficient is calculated in conformity to the on-site use reality.

关键词： heat transfer coefficient quenching oil heat-treatment simulation

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Advances in Materials Physics and Chemistry 2015年第1期5卷 1-9页

作者： Ryoji Maeda Hiroshi Tokairin Hidetsugu Ikeda Jun-Ichi Takahashi Yuji Yoshida Interdisciplinary Graduate School of Science and Engineering Tokyo Institute of Technology Yokohama Japan Advanced Technology Research Laboratories Idemitsu Kosan Co. Ltd. Sodegaura Japan Research Center for Photovoltaic Technologies AIST Tsukuba Japan

The carrier dynamics in organic photovoltaic (OPV) cells were investigated by impedance spectroscopy. We introduced a novel impedance spectrum representation called dynamic modulus plot (DMP), which allowed us to observe the layer-to-layer carrier injection behavior graphically. In this work, the impedance responses were characterized in the N,N’-diphenyl-N,N’-di-m-tolyl- 4,4’-diaminobiphenyl (TPD)/C60 p-n heterostructured OPV cells against applied voltages. The dependence of impedance responses on the layer thickness revealed a constant internal electric field that disturbed the carrier transport within the OPV cells. We applied this technique to new donor materials, in which thiophene units were inserted to the center of TPD. By increasing the number of thiophene units in TPD the fill-factor (FF) improved from 33% to 59%, which increased the power conversion efficiency (PCE). Based on the DMP analysis, we assigned the improvement in device performance to the reduction of the internal electric field.

关键词： Organic Photovoltaic Cells Impedance Spectroscopy Modulus Analysis

<i>In-Situ</i>Measurements of the Photoconductivity of Multi-Layered Organic Photovoltaic Devices Using Impedance Spectroscopy

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 Materials Physics and Chemistry 2015年第2期5卷 47-52页

作者： Ryoji Maeda Hiroshi Tokairin Jun-Ichi Takahashi Yuji Yoshida Interdisciplinary Graduate School of Science and Engineering Tokyo Institute of Technology Yokohama Japan Advanced Technology Research Laboratories Idemitsu Kosan Co. Ltd. Sodegaura Japan Research Center for Photovoltaic Technologies AIST Tsukuba Japan

In-situ impedance spectroscopy (IS) observations of the photoconductivity of the carriers induced by photo-irradiation in organic hetero-junction structured photovoltaic devices are presented. In the IS measurements, the externally applied voltage and the dependence of the light intensity applied to the device were investigated. Analysis of the frequency characteristics which was measured by changing the light intensity shows there is a proportional relationship between the changes in the conductivities of the two components. The mobilities of the CuPc and C60 layers were calculated from the conductivities and were in the orders of 10﹣4 and 10﹣3 cm2/Vs, respectively.

关键词： Organic Photovoltaic Cells Impedance Spectroscopy Modulus Analysis Photoconductivity

Practical Performance of High Bulk Modulus Oil

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 Mechanics Engineering and Automation 2012年第2期2卷 119-123页

作者： Toshiyuki Tsubouchi Jitsuo Shinoda Advanced Technology Research Laboratories Idemitsu Kosan Co. Ltd. Sodegaura 299-0293 Japan Lubricants Research Laboratory Idemitsu Kosan Co. Ltd. Ichihara 299-0107 Japan

Although hydraulic drives have an advantage of high power density, volumetric shrinkage of hydraulic fluids due to pressure causes various disadvantages such as delay of hydraulic response and compression energy loss. Hydraulic fluids of new concept, high bulk modulus oils, have been developed as a new approach to improve the performance of a hydraulic servo system and verified. In this paper, practical performances of high bulk modulus oil, such as oil temperature rise during pump test, air bubbles generation by ultrasonic wave vibration, oxidation stability and anti-wear property, were studied. And the new oil was confirmed to have excellent practical performances besides advantages in pressure response and volumetric efficiency of pumps. Various new applications of the new oil are promising.

关键词：体积弹性模量实用性能液压伺服系统液压驱动反应压力高功率密度超声波振动抗磨损性能

Actinobacteria-enhanced plant growth, nutrient acquisition, and crop protection:Advances in soil, plant, and microbial multifactorial interactions

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Pedosphere 2022年第1期32卷 149-170页

作者： Debasis MITRA Rittick MONDAL Bahman KHOSHRU Ansuman SENAPATI T.K.RADHA Bhaswatimayee MAHAKUR Navendra UNIYAL Ei Mon MYO Hanane BOUTAJ Beatriz Elena GUERRA SIERRA Periyasamy PANNEERSELVAM Arakalagud Nanjundaiah GANESHAMURTHY Snežana ANÐELKOVIĆ Tanja VASIĆ Anju RANI Subhadeep DUTTA Pradeep K.DAS MOHAPATRA Department of Microbiology Raiganj UniversityRaiganjWest Bengal 733134India Department of Sericulture Raiganj UniversityRaiganjWest Bengal 733134India Department of Soil Science Faculty of AgricultureUniversity of TabrizTabriz 51664Iran Crop Production Division Indian Council of Agricultural Research(ICAR)National Rice Research InstituteCuttackOdisha 753006India Division of Soil Science and Agricultural Chemistry ICAR Indian Institute of Horticultural ResearchBengaluruKarnataka 560089India Department of Botany and Biotechnology Ravenshaw UniversityCuttackOdisha 753003India Genetics and Tree Propagation Division Forest Research InstituteUttarakhand 248003India Biotechnology Research Department Department of Research and InnovationMinistry of EducationKyaukse 05151Myanmar Laboratory of Biotechnology and Molecular Bioengineering Faculty of Sciences and TechnologyCadi Ayyad UniversityMarrakesh 40000Morocco Universidad de Santander Facultad de Ciencias Exactas Naturales y AgropecuariasGrupoMicrobiotaCampus Universitario Lagos del CaciqueBucaramanga 680002Colombia Institute for Forage Crops Kruševac 37251Republic of Serbia Plant Protection Faculty of AgricultureUniversity of NišKosančićeva 4Kruševac 37000Republic of Serbia Department of Life Sciences Graphic Era(Deemed to be University)DehradunUttarakhand 248002India Professor A.K.Bothra Environment Conservation Centre Raiganj UniversityRaiganjWest Bengal 733134India

Agricultural areas of land are deteriorating every day owing to population increase, rapid urbanization, and industrialization. To feed today’s huge populations, increased crop production is required from smaller areas, which warrants the continuous application of high doses of inorganic fertilizers to agricultural land. These cause damage to soil health and, therefore, nutrient imbalance conditions in arable soils. Under these conditions, the benefits of microbial inoculants (such as Actinobacteria) as replacements for harmful chemicals and promoting ecofriendly sustainable farming practices have been made clear through recent technological advances. There are multifunctional traits involved in the production of different types of bioactive compounds responsible for plant growth promotion, and the biocontrol of phytopathogens has reduced the use of chemical fertilizers and pesticides. There are some well-known groups of nitrogen-fixing Actinobacteria, such as Frankia, which undergo mutualism with plants and offer enhanced symbiotic *** addition to nitrogen fixation, increasing availability of major plant nutrients in soil due to the solubilization of immobilized forms of phosphorus and potassium compounds, production of phytohormones, such as indole-3-acetic acid, indole-3-pyruvic acid, gibberellins, and cytokinins, improving organic matter decomposition by releasing cellulases, xylanase, glucanases, lipases, and proteases, and suppression of soil-borne pathogens by the production of siderophores, ammonia, hydrogen cyanide, and chitinase are important features of Actinobacteria useful for combating biotic and abiotic stresses in *** positive influence of Actinobacteria on soil fertility and plant health has motivated us to compile this review of important findings associated with sustaining plant productivity in the long run.

关键词： biocontrol agents microbial inoculant metabolites mitrogen fixation plant growth promoters sustainable agriculture