WorldWideScience

Sample records for planers

  1. How Planer Settings Affect Timber Properties

    Directory of Open Access Journals (Sweden)

    Ann Axelsson

    2014-09-01

    Full Text Available There are different reasons for planing timber. One is to adjust the cross-sectional dimensions of thickness and width. Another is to adjust the timber's outer shape, usually in order to reduce warp resulting from drying and having the forms of cup, twist, bow, and crook. The end-result depends on the properties of the timber before planing and on the planer design and settings. In the present work it was found that increasing or decreasing the forces exerted on the timber by a four-sided planer does not affect the cutting depth or the twist reduction. The pressure settings do not affect the rectangularity or the amount of unplaned areas on the surfaces either. The possibility to impact the result with this type of planer, apart from the cutting depth and planed dimensions, is slim to none.

  2. A brief account of Julius Planer's life and research

    Directory of Open Access Journals (Sweden)

    R. Bilyy

    2010-01-01

    Full Text Available A brief account of the life and research activities of Julius Planer is presented. Professor Planer is a scientist who lived one and half century ago. However, his studies, in particular, during the years when he headed Department of Anatomy at Universität in Lemberg, nowadays known as the Ivan Franko National University of Lviv in Ukraine, were essential to a modern understanding of liquid crystals. While working at Lviv University, Planer also made several landmark contributions to biomedical science.

  3. On Julius Planer's 1861 paper "Notiz über das Cholestearin" in Annalen der Chemie und Pharmacie

    Directory of Open Access Journals (Sweden)

    A. Trokhymchuk

    2010-01-01

    Full Text Available Brief review of the literature on the history of thermotropic liquid crystal discovery and the role of the observations reported by Julius Planer in his note published almost 150 years ago.

  4. Tunneling planer Hall effect in Ni81Fe19/Al2O3/Nix Fe1-x junction

    Institute of Scientific and Technical Information of China (English)

    陈慧余; 冯永嘉; 熊曹水

    1999-01-01

    Tunneling planer Hall (TPH) effect in Ni81Fe19/Al2O3/NixFe1-x trilayer junction is different from general planer Hall effect in single-layer film or two-layer junction. This effect concerns the spin-polarized transport, so that the TPH voltage depends on the angle between magnetic vectors of two ferromagnetic layers. The TPH effect is reported to be influenced by composition and magnetic properties of FM layers and the thickness of the insulating layer.

  5. Modeling the Effect of P-N Junction Depth on the Output of Planer and Rectangular Textured Solar Cells

    Directory of Open Access Journals (Sweden)

    F. Jahanshah

    2009-01-01

    Full Text Available Problem statement: High cost of the solar cells is one of the important limitations in extensively using of the photovoltaic panels. Thin monocrystalline silicon solar cell could be reduce the cost but lost the absorption efficiency. Surface texturing help to enhance absorption. Using of advance texturing by diffraction grating was suggested for high absorption. It is necessary to investigate the scattering effect of diffraction grating with other solar cell parameter for optimization. In first step we concentrate on p-n junction position impact by modeling. Approach: The effect of position of p-n junction on the output current for both micro rectangular texturing and planer surface in solar cell has been investigated by ray tracing. Modeling of nine pairs solar cells with the same texture and planer surfaces but with different p-n junction position are done by using Atlas software. The output short current is a criterion for determining of efficiency performance. By comparing of the short current for each pair we was find the impacts of texturing and p-n junction depth on the monocrystalline thin film. Results: Light scattering due to diffraction grating inside the silicon with rectangular depth of 5 µm and a range of 5-40 µm p-n junction depths are investigated. The difference of short current in textured to bare silicon showed the enhancement from 4-8 µA when the p-n junction depths vary from 5-45 µm. Conclusions: Comparison of short current output confirms the correlation between p-n junction depth and texturing. Advanced texturing improve the solar cell efficiency but the effectiveness change with the p-n junction depth and need a simultaneous optimization for getting the high efficiency solar cell.

  6. Combustion characteristics of Douglas Fir planer shavings. Technical progress report No. 4, September 16, 1977--September 15, 1978

    Energy Technology Data Exchange (ETDEWEB)

    Junge, D.C.

    1978-12-01

    Significant quantities of wood residue fuels are presently being used in industrial steam generating facilities. Recent studies indicate that substantial additional quantities of wood residue fuels are available for energy generation in the form of steam and/or electricity. A limited data base on the combustion characteristics of wood residue fuels has resulted in the installation and operation of inefficient combustion systems for these fuels. This investigation of the combustion characteristics of wood residue fuels was undertaken to provide a data base which could be used to optimize the combustion of such fuels. Optimization of the the combustion process in industrial boilers serves to improve combustion efficiency and to reduce air pollutant emissions generated in the combustion process. This report presents data on the combustion characteristics of Douglas Fir planer shavings. The data were obtained in a pilot scale combustion test facility at Oregon State Univerisity. Other technical reports present data on the combustion characteristics of: Douglas Fir bark, Red Alder sawdust, Red Alder bark, Ponderosa pine bark, Hemlock bark, and Eastern White Pine bark. An executive summary report is also available which compares the combustion characteristics of the various fuel species.

  7. The Use of AC Servo in Heavy Duty Double Housing Planer%交流伺服在重型龙门刨床的使用

    Institute of Scientific and Technical Information of China (English)

    郭慧锋

    2015-01-01

    Reduce heavy planer workbench fast moving system, the impact on the reducer , heavy duty double housing plan-er workbench electrical control movement diversification, application of cost-effective, reliable operation of the control scheme has been imperative. Ac servo and speed feedback control with speed/position, etc. From two aspects of optimization design to achieve the workbench infinitely adjustable-speed.%减小重型刨床工作台快速移动换向时,对减速箱的冲击,重型龙门刨床工作台电气控制运动多样化,应用性价比高,运行可靠的控制方案已势在必行。交流伺服兼速度反馈跟速度/位置等多种控制。从2个方面优化设计来实现工作台的无级调速。

  8. Combustion characteristics of eastern white pine bark and Douglas fir planer shavings. Technical Progress Report No. 5, September 16, 1977--September 15, 1978

    Energy Technology Data Exchange (ETDEWEB)

    Junge, D.C.

    1978-12-01

    Significant quantities of wood residue fuels are presently being used in industrial steam generating facilities. Recent studies indicate that substantial additional quantities of wood residue fuels are available for energy generation in the form of steam and/or electricity. A limited data base on the combustion characteristics of wood residue fuels has resulted in the installation and operation of inefficient combustion systems for these fuels. This investigation of the combustion characteristics of wood residue fuels was undertaken to provide a data base which could be used to optimize the combustion of such fuels. Optimization of the combustion process in industrial boilers serves to improve combustion efficiency and to reduce air pollutant emissions generated in the combustion process. Data are presented on the combustion characteristics of eastern white pine bark mixed with Douglas fir planer shavings.

  9. PLC和变频器在龙门刨床控制中的应用%The Application of the PLC and Inverter In the Planer Control

    Institute of Scientific and Technical Information of China (English)

    石征锦; 孙继亮

    2011-01-01

    Requirements of the main drag control circuit in planer and design methods and procedures with PLC and Inverter are introduced. Then the PLC ladder programming procedures and Inverter parameter settings are presented. Through Machine reconstruction with PLC and Inverter, driving control is move simplified than original machine tool control. A lot of relay components is saved and maintenance and check is easy. The machine works more efficiently.%叙述了龙门刨床主拖动控制线路的控制要求及采用PLC和变频器进行改造设计的方法和步骤,给出PLC编程程序梯形图、变频器参数设置表.通过PLC和变频器对龙门刨床控制系统的改造,简化了原机床控制电路,节省大量的继电器元件,维修方便,使机床的工作效率更高.

  10. Functional MR imaging of the primary motor area in patients with brain tumors of the motor cortex. Evaluation with echo-planer imaging on a clinical 1.0 T MR imager

    Energy Technology Data Exchange (ETDEWEB)

    Hara, Yoshie; Nakamura, Mitsugu; Tamaki, Norihiko; Ehara, Kazumasa [Kobe Univ. (Japan). School of Medicine; Kitamura, Junji

    1998-04-01

    The study included 3 healthy volunteers and 8 patients with a brain tumor of the motor cortex. The fMRI study was based on the spin echo (SE) type single shot echo-planer technique. Ten contiguous axial slices consisted of 40-60 echo-planer images acquired during 80-120 seconds of repeated task performances and resting periods. Activation maps were calculated by a Z-score method with thresholding, and interpolated on T1 images and surface anatomy scans. In all cases, areas of a significant signal increase were detected as clusters of several pixels on the precentral gyrus contralateral to the motor task performance. The mean signal change was 3.6{+-}0.9% in normal subjects, and 7.2{+-}4.1% in brain tumor patients. There was no significant difference between the two groups. In 5 brain tumor patients significant displacement of the precentral gyrus was observed on T1- or T2-weighted SE images. Of these, 2 also had marked peritumoral edema spreading over the precentral gyrus. There was no significant difference in the size, or the degree, of signal change between patients with or without compression or edema, nor between patients with and without preoperative motor impairment. During surgical intervention, displacement of the precentral gyrus was observed as had been demonstrated on preoperative images of patients. In all patients the precentral gyrus was preserved in all cases, and no deterioration of motor function occurred. Resolution of the displacement and edema was detected on postoperative MRI. Using the echo-planer technique on a clinical 1.0 T imager fMRI localization of the primary motor cortex was obtained in normal and brain tumor subjects. The activated areas were detected on the precentral gyrus of both groups, and even when there was marked brain compression or edema. It is important to identify and preserve the precentral gyrus during surgery to avoid deterioration of motor function. (K.H.)

  11. ICF, individuelle planer og sociale tilbud

    DEFF Research Database (Denmark)

    Bonfils, Inge Storgaard; Wind, Thea

    Den Sociale Virksomhed i Region H. har siden 2008 arbejdet med at anvende ICF som grundlag for en funktionsevneudredning af brugerne af de sociale tilbud. Evalueringen viser, at arbejdet med ICF giver højere faglig kvalitet, et fælles sprog og er et godt værktøj til tværfagligt samarbejde....

  12. Planer for den andens liv II

    DEFF Research Database (Denmark)

    Breumlund, Anne; Hansen, Inger Bruun

    Undersøgelsen viser, hvordan den socialpædagogiske indsats på botilbuddet Højskolebakken skaber forandringer i hveragslivet for en gruppe unge med autisme, som har tillægsdiagnoser, udfordrende adfærd, misbrug eller har udøvet kriminalitet. Anden rapport fra forskningsprojektet: "Den pædagogiske og...

  13. Planer for den andens liv I

    DEFF Research Database (Denmark)

    Breumlund, Anne; Hansen, Inger Bruun

    Undersøgelsen viser, hvordan den socialpædagogiske indsats på botilbuddet Højskolebakken må udvikles i mødet med en gruppe unge med autisme, som har tillægsdiagnoser, udfordrende adfærd, misbrug eller har udøvet kriminalitet. Første rapport fra forskningsprojektet: "Den pædagogiske og sociale...

  14. Development of a new numerical method for visco-elastic flows using the GSMAC-method and the MUSCL-TVD method. Flows of Maxwell fluid through planer abrupt contraction; Kosei hoteishiki ni TVD gata MUSCL ho wo mochiita GSMAC ho ni yoru nendansei ryutai no kaiseki ni tekishita scheme kaihatsu. Maxwell ryutai no kyushuku shoheibannai nagare ni yoru kensho

    Energy Technology Data Exchange (ETDEWEB)

    Fujieda, T.; Tanahashi, T.; Okada, A. [Keio University, Tokyo (Japan). Faculty of Science and Technology; Kato, Y. [Asahi Glass Co. Ltd., Tokyo (Japan)

    1997-06-25

    In this paper, we propose a new GSMAC-FEM (generalized simplified marker and cell-finite element method) which is suited to the numerical analysis of visco-elastic fluids. The equation of continuity and the equation of momentum are solved by the GSMAC-FEM algorithm and the constitutive equation is solved by the finite volume method. This scheme employs the third order MUSCL (Monotone Upstream-centered Schemes for Conservation Law) in order to guarantee the absence of spurious oscillation near the steep gradients of the variable. This method uses a minmod limiter in order to satisfy the TVD (Total Variation Diminishing) condition. The present method employs the simultaneous relaxation of velocity and pressure for the incompressible condition. The flows of Maxwell fluid through two-dimensional planer abrupt contraction are calculated by the present method and the effects the Weissenberg number and the Reynolds number are discussed. 13 refs., 12 figs.

  15. Planering och integrering av kassaregister och övervakningssystem

    OpenAIRE

    Känsälä, Markus

    2009-01-01

    Syftet med detta arbete har varit att planera och integrera ett kassa- och övervakningssystem i en bybutik. Alla aktiviteter har utförts inom ramarna för ett projekt som haft som slutmål att skapa en obemannad bybutik. Internet har varit den primära informationskällan för arbetet. The purpose of this thesis work has been to develop and integrate a POS and surveillance system in a small grocery store. The foundation for all the activities performed has been a project aimed at developing...

  16. Flexible lithium-ion planer thin-film battery

    KAUST Repository

    Kutbee, Arwa T.

    2016-02-03

    Commercialization of wearable electronics requires miniaturized, flexible power sources. Lithium ion battery is a strong candidate as the next generation high performance flexible battery. The development of flexible materials for battery electrodes suffers from the limited material choices. In this work, we present a flexible inorganic lithium-ion battery with no restrictions on the materials used. The battery showed an enhanced normalized capacity of 146 ??Ah/cm2.

  17. Trajectory Tracking of a Planer Parallel Manipulator by Using Computed Force Control Method

    Science.gov (United States)

    Bayram, Atilla

    2017-03-01

    Despite small workspace, parallel manipulators have some advantages over their serial counterparts in terms of higher speed, acceleration, rigidity, accuracy, manufacturing cost and payload. Accordingly, this type of manipulators can be used in many applications such as in high-speed machine tools, tuning machine for feeding, sensitive cutting, assembly and packaging. This paper presents a special type of planar parallel manipulator with three degrees of freedom. It is constructed as a variable geometry truss generally known planar Stewart platform. The reachable and orientation workspaces are obtained for this manipulator. The inverse kinematic analysis is solved for the trajectory tracking according to the redundancy and joint limit avoidance. Then, the dynamics model of the manipulator is established by using Virtual Work method. The simulations are performed to follow the given planar trajectories by using the dynamic equations of the variable geometry truss manipulator and computed force control method. In computed force control method, the feedback gain matrices for PD control are tuned with fixed matrices by trail end error and variable ones by means of optimization with genetic algorithm.

  18. Accelerated Echo Planer J-resolved Spectroscopic Imaging of Putamen and Thalamus in Obstructive Sleep Apnea

    OpenAIRE

    Manoj K. Sarma; Macey, Paul M.; Rajakumar Nagarajan; Ravi Aysola; Ronald M Harper; M. Albert Thomas

    2016-01-01

    Obstructive sleep apnea syndrome (OSAS) leads to neurocognitive and autonomic deficits that are partially mediated by thalamic and putamen pathology. We examined the underlying neurochemistry of those structures using compressed sensing-based 4D echo-planar J-resolved spectroscopic imaging (JRESI), and quantified values with prior knowledge fitting. Bilaterally increased thalamic mI/Cr, putamen Glx/Cr, and Glu/Cr, and bilaterally decreased thalamic and putamen tCho/Cr and GABA/Cr occurred in ...

  19. Tunable Negative Differential Resistance in Planer Graphene Superlattice Resonant Tunneling Diode

    OpenAIRE

    Sattari-Esfahlan, S. M.; Fouladi-Oskuei, J.; S. Shojaei

    2017-01-01

    In this paper, we report on the controllable negative differential resistance (NDR) in a proposed planar graphene superlattice structure. High value of peak to valley ratio (PVR) is predicted. This is significant because of appearance of NDR with high PVR at low biases. Our finding is important since beside the other potential applications of the graphene, proposes implementation of the graphene based superlattice in electronic devices such as resonant tunneling diode and filters.

  20. Research on Initiation Sensitivity of Solid Explosive and Planer Initiation System

    Directory of Open Access Journals (Sweden)

    N Matsuo

    2016-09-01

    Full Text Available Firstly, recently, there are a lot of techniques being demanded for complex process, various explosive initiation method and highly accurate control of detonation are needed. In this research, the metal foil explosion using high current is focused attention on the method to obtain linear or planate initiation easily, and the main evaluation of metal foil explosion to initiate explosive was conducted. The explosion power was evaluated by observing optically the underwater shock wave generated from the metal foil explosion. Secondly, in high energy explosive processing, there are several applications, such as shock compaction, explosive welding, food processing and explosive forming. In these explosive applications, a high sensitive explosive has been mainly used. The high sensitive explosive is so dangerous, since it can lead to explosion suddenly. So, for developing explosives, the safety is the most important thing as well as low manufacturing cost and explosive characteristics. In this work, we have focused on the initiation sensitivity of a solid explosive and performed numerical analysis of sympathetic detonation. The numerical analysis is calculated by LS-DYNA 3D (commercial code. To understand the initiation reaction of an explosive, Lee-Tarver equation was used and impact detonation process was analyzed by ALE code. Configuration of simulation model is a quarter of circular cylinder. The donor type of explosive (SEP was used as initiation explosive. When the donor explosive is exploded, a shock wave is generated and it propagates into PMMA, air and metallic layers in order. During passing through the layers, the shock wave is attenuated and finally, it has influence on the acceptor explosive, Comp. B. Here, we evaluate the initiation of acceptor explosive and discuss about detonation pressure, reactive rate of acceptor explosive and attenuation of impact pressure.

  1. Imaging of sub-surface nanostructures by dielectric planer cavity coupled microsphere lens

    Science.gov (United States)

    Guo, Minglei; Ye, Yong-Hong; Hou, Jinglei; Du, Bintao; Wang, Tian

    2017-01-01

    In this paper, a dielectric planar cavity between an object and a microsphere lens is fabricated and its effects on the imaging of sub-surface nanostructures have been studied. Using the dielectric planar cavity combined (DPCC) silica microsphere lens, our experimental results illustrate that the nanostructures of data-recorded Blu-ray disc can be clearly resolved. Optical images of the object with higher contrast and larger field of view (FOV) can be obtained, compared to the case when only a microsphere lens is used. For the 3.4 μm diameter microsphere lens combing a planar cavity with a thickness about 2.2 μm, the FOV is about 2.4 μm and the magnification is about 1.6. With the 3.4 μm diameter microsphere lens only, the FOV and magnification is 1.5 μm and 1.4 respectively. Theoretical analysis of the imaging properties is carried out by the characteristics of electric field distribution of microsphere lenses. The simulated results indicate that the dielectric planar cavity working as a Fabry-Pérot cavity can effectively enhance the coupling of optical information.

  2. Planering och förverkligande av lunch under en temavecka

    OpenAIRE

    Bondegård, Nicolina

    2015-01-01

    Syftet med detta lärdomsprov är att planera och förverkliga lunch under en tema vecka vid Café Malmia i Jakobstad. Till min uppgift hörde att planera menyn, göra beställningslista, marknadsföra veckan, göra lunchen, samt leda arbetet under temaveckan. Temat på veckan var påsk och den ordnades under påskveckan 30.3-2.4.2015. I den teoretiska delen tar jag upp teorier som berör de uppgifter jag har under temaveckan. Sedan tar jag upp hur jag planerade och hur jag förverkligande veckan dag för d...

  3. Development of Co-Sintering Process for Effective Fabrication of Direct-Write Planer Waveguide

    Institute of Scientific and Technical Information of China (English)

    W.Jung; S.; Yoo; S.; Boo; U.-C.; Paek; W.-T.; Han

    2003-01-01

    We propose a co-sintering process for effective fabrication of three-layered structure for direct-write planar waveguide. Processing parameters and optical properties of the waveguide was investigated.

  4. Kinematic Analysis of 3-DOF Planer Robot Using Artificial Neural Network

    Directory of Open Access Journals (Sweden)

    Jolly Atit Shah

    2012-07-01

    Full Text Available Automatic control of the robotic manipulator involves study of kinematics and dynamics as a major issue. This paper involves the forward and inverse kinematics of 3-DOF robotic manipulator with revolute joints. In this study the Denavit- Hartenberg (D-H model is used to model robot links and joints. Also forward and inverse kinematics solution has been achieved using Artificial Neural Networks for 3-DOF robotic manipulator. It shows that by using artificial neural network the solution we get is faster, acceptable and has zero error.

  5. Ultra Intense Laser Pulse Interactions with Planer and Spherical Plasmas for Fast Ignitor

    Science.gov (United States)

    Tanaka, Kazuo A.

    1999-11-01

    The fast ignitor concept requires the guiding or penetration of an ultra-intense laser close to a highly compressed (1000 times solid density) core and the generation of energetic electrons (MeV). Ultra-intense laser plasma interactions have been intensively studied using the Peta Watt Module (PWM) laser system synchronized with the GEKKO XII laser system. The ultra-intense laser pulse of 50J energy, 0.5-1 psec pulse width and 1053 nm laser wavelength could be focused onto a preformed plasma created on a solid target at an intensity of 1e19 W/cm2. The preformed plasma had a cut-off density surface at around 100 micron from the surface. Changing the focus position of this 100 TW laser pulse relative to the preformed plasma, we found an anomalous mode. Side view of x-ray pinhole camera showed that there was a local tiny spot almost at the surface of the solid target which indicates the propagation of the pulse in the long scale-length plasma into an over-dense region for over 100 micorn distance. The erergy spectrum and angular distribution of more than MeV electrons were measured. Its energy transport was studied with K-a spectroscopy. The backscattered light of the ultra-intense laser light was spectrally and spatially resolved. The backscattered light image showed several hot spots within the focused region. The spatilally resolved spectra of the backscattered light were totally different at the hot spots and surrounding regions. The details of neutron spectra were measured using ``MANDALA" neutron spectormeters with a total of 841 channel photo-multiplier detectors. The data indicates that deuterium ions were accelerated by the hot electrons up to 100 keV and created beam fusion reactions within solid CD targets. Guiding channels were created utilizing a ponderomotive self-focusing in preformed plasmas created on a solid target. The self-focus channel was measured by both UV and x-ray laser probes. The details of the experiment as well as the theoretical simulation will be presented.

  6. Ud af røret? Planer, processer og paradokser omkring det Københavnske kloaksystem 1840-2001

    DEFF Research Database (Denmark)

    Lindegaard, Hanne

    Afhandlingen handler om Københavns mere en 100 år gamle kloakteknologi, der i mange år har været en usynlig, stabil og taken for granted hverdagsinstallation, som ikke i særlig høj grad er blevet diskuteret eller problematiseret, men opfattet som en fuldstændig løsning på en række af byens proble...

  7. Optimal use of UPS installations; Optimierter Einsatz von USV-Anlagen. Merkblatt fuer Planer und Betreiber von USV-Anlagen

    Energy Technology Data Exchange (ETDEWEB)

    Schnyder, G.; Mauchle, P.

    2005-07-01

    This technical bulletin for planners and operators published by the Swiss Federal Office of Energy (SFOE) is one of a set of nine documents that provide an overall review of the energy-efficiency of UPS systems. This technical bulletin lists the requirements placed on the supply and use of power provided by a UPS installation. The three basic types of UPS systems and their operating principles are described. The information contained in a quality/energy matrix is explained and the categorisation of power consumers into three rough categories is examined. Tips on the choice of a UPS system are presented. Further publications are listed.

  8. Preparedness strategy and procedures. Annual report 1996. Plans for 1997; Beredskabsstrategi og -procedure. Aarsrapport 1996. Planer for 1997

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-01-01

    EKO-3 Preparedness Strategy and Procedures, a title that covers the subjects - collection, quality assurance, and the use of data in a preparedness situation. The term data is used here in its widest sense covering measurements, samples, radioecological background information, etc. The following sub-projects are part of EKO-3: EKO-3.1 Mobile measurements; EKO-3.2 Quality Assurance in sampling and analysis; EKO-3.3 Operational intervention levels; EKO-3.4 Measurement strategy, basis for decisions, and interventions in agriculture. EKO-3.1 which was the first started project is more or less completed. The sub-project will, however, continue with reference to a common NKS-EU follow-up exercise on RESUME-95 in 1998 - RESUME-98. In 1996 most funds has been given to EKO-3.2. The different parts of the project have been launched and the first of them are approaching their conclusion, this is the case for for example Quality assurance in gamma spectroscopy with accreditation as a goal. For 1997 a number of `typical` Nordic scenarios is planned. EKO-3.4 too has proceeded as planned in 1996. Also in this project the work has partly been on planning. The project work proceeds well and a draft version of the final report is expected ultimo 1996. (EG).

  9. Plans for the NKS-program 1998-2001; Planer for NKS-programmet 1998-2001

    Energy Technology Data Exchange (ETDEWEB)

    Bennerstedt, T. [ed.

    1999-08-01

    The present report is a comprehensive compilation of the adopted NKS project plans for the sixth four-year period, 1998-2001. Most of the plans are in English. One is in both English and Danish. One is in Norwegian, with a brief summary in English. Only two of the six appendices are in English. In spite of this, it is believed that the report will serve as a valuable source of information not only to those actually active in or closely following the NKS work, but also the international scientific community, e.g., within EU and in the Baltic States. The research program incorporates reactor safety, radioactive waste, emergency preparedness, radioecology, cross-disciplinary studies, and information issues. The necessary administrative support program, including the NKS Secretariat, is not described herein. Neither is the aim, scope or organization of NKS, since this has been covered elsewhere. (EHS)

  10. Seal of quality for planners of geothermal energy installations, prize for geothermal installations; Guetesiegel fuer Planer von Geothermieanlagen, Geothermiepreis Phase I (2002)

    Energy Technology Data Exchange (ETDEWEB)

    Eugster, W. J. [Polydynamics Engineering Zuerich, Zuerich (Switzerland); Eberhard, M. [Eberhard and Partner AG, Aarau (Switzerland); Koschenz, M. [EMPA, Duebendorf (Switzerland); Morath, M. [Lippuner and Partner AG, Grabs (Switzerland); Rohner, E. [Engeo AG, Arnegg (Switzerland)

    2003-07-01

    This final report for the Swiss Federal Office for Energy describes a project that aimed to improve the awareness of planners and installers involved in geothermal energy projects for the problems encountered when dimensioning both large and small geothermal installations, and to provide the basic knowledge necessary for a correct sizing of such plants. The report's main emphasis is placed on three types of geothermal plant, bore-hole heat exchangers, groundwater use and energy pile installations. The concept of the training programme involved is described, which is to issue certificates and labels for the attainment of three levels of ability. These three levels (Labels A, B and C) cover simple, small plants for heating operation, medium sized plants within a heating capacity range of 30 to approximately 100 kW and large plants for heating and cooling operation with heat capacities greater than 100 kW, respectively. The report also includes details of the time-line aimed for and costs. Also, the idea of an annual prize for geothermal installations is briefly discussed.

  11. Seal of quality for planners of geothermal energy installations, prize for geothermal installations; Guetesiegel fuer Planer von Geothermieanlagen, Geothermiepreis Phase I (2002)

    Energy Technology Data Exchange (ETDEWEB)

    Eugster, W. J. [Polydynamics Engineering Zuerich, Zuerich (Switzerland); Eberhard, M. [Eberhard and Partner AG, Aarau (Switzerland); Koschenz, M. [EMPA, Duebendorf (Switzerland); Morath, M. [Lippuner and Partner AG, Grabs (Switzerland); Rohner, E. [Engeo AG, Arnegg (Switzerland)

    2003-07-01

    This final report for the Swiss Federal Office for Energy describes a project that aimed to improve the awareness of planners and installers involved in geothermal energy projects for the problems encountered when dimensioning both large and small geothermal installations, and to provide the basic knowledge necessary for a correct sizing of such plants. The report's main emphasis is placed on three types of geothermal plant, bore-hole heat exchangers, groundwater use and energy pile installations. The concept of the training programme involved is described, which is to issue certificates and labels for the attainment of three levels of ability. These three levels (Labels A, B and C) cover simple, small plants for heating operation, medium sized plants within a heating capacity range of 30 to approximately 100 kW and large plants for heating and cooling operation with heat capacities greater than 100 kW, respectively. The report also includes details of the time-line aimed for and costs. Also, the idea of an annual prize for geothermal installations is briefly discussed.

  12. Offshore wind power - Possibilities and shortcomings in the planning and design; Vindkraft till havs - Moejligheter och brister vid planering och projektering

    Energy Technology Data Exchange (ETDEWEB)

    Andre, Daniel

    2010-02-15

    The purpose of this report is to examine how the planning preparedness offshore unfolds. Planning conditions of municipalities have been investigated through interviews with municipal planners and representatives of the wind power stakeholders. At the same time, the problems and deficiencies that impede the expansion of offshore wind power have been identified. In the report, based on the survey of the state of planning, as well as the shortcomings of current systems, the Swedish National Board of Housing, Building and Planning presents opportunities for improvements. With these proposals the Swedish National Board of Housing, Building and Planning opens up for an increased cooperation with the aim to facilitate a future expansion of offshore wind power. The report primarily addresses central government agencies and authorities, county councils, as well as planners or other officers of the national, regional and municipal levels

  13. Kræver mindre ændringer af planer miljøvurdering, og er fredninger omfattet af miljøvurderingsloven?

    DEFF Research Database (Denmark)

    Pagh, Peter

    2016-01-01

    , hvorfor spørgsmålet er, om ændringen af planen kræver miljøvurdering og offentlig høring efter miljøvurderingsloven. I en ny dom i sag C-473/14 har EU-domstolen fastslået, at SMV-direktivets krav om miljøvurdering og offentlig høring også gælder mindre ændringer af en fredningsplan, uanset ændringen havde...

  14. Verification of plans without filter through the planer portal imaging system; Verificacion de pnaes sin filtro aplandor mediante el sistema de imagen

    Energy Technology Data Exchange (ETDEWEB)

    Pardo Perez, E.; Catro Novais, J.; Molina Lopez, M. Y.; Ruiz Maqueda, S.; Cerro Penalver, E. del

    2015-07-01

    In this paper the feasibility of conducting checks by the Portal working at higher source detector distances is analyzed. Additionally, a method is presented for generating the predicted image and retain the Portal Dosimetry application for analysis and recording the results. The results show that the method is able to predict the signal acquired by the portal both in clinical fields as test. (Author)

  15. Hötorksanläggning i södra Finland – planering och utvärdering av lönsamhet

    OpenAIRE

    Wikner, Mats

    2015-01-01

    Syftet med föreliggande arbete är dels att undersöka vilka olika alternativ som finns för att bygga en hötork till en gård i Kyrkslätt i södra Finland, dels att utvärdera hötorkens eventuella lönsamhet. Arbetet har karaktären av en fallstudie, i den meningen att lönsamhetsberäkningarna snarast gäller för den specifika modellgården, där det i dagsläget bedrivs hästverksamhet och spannmålsodling. Gården har 65 hästar och 75 ha odlingsmark. Arbetet bygger på intervjuer (med tillverkare och ...

  16. Theoretical calculations of spin-Hamiltonian parameters for the square planer CuCl4 2 - cluster in Cs2ZrCl6 crystal

    Science.gov (United States)

    Liu, Gang; Mei, Yang; Zhang, Xin-Xin; Zheng, Wen-Chen

    2015-05-01

    The high-order perturbation formulas based on a two-mechanism model (where in addition to the contributions from the crystal-field (CF) mechanism in the usually-applied CF theory, those from the generally-neglected charge-transfer (CT) mechanism are also contained) are employed to calculate the spin-Hamiltonian parameters (g factors g//, g⊥ and the hyperfine structure constants A//, A⊥) of the square planar CuCl4 2 - clusters in Cs2ZrCl6 crystal. The needed CF energy levels in the calculations are obtained from the observed optical spectra. The calculated results show reasonable agreement with the experimented values. The negative sign of A// and positive sign of A⊥ are proposed from the calculations. The calculations also suggest that one should take account of the contributions due to both the CF and CT mechanisms for the exact and rational calculations of spin-Hamiltonian parameters of Cu2+-Cl- combination in crystals.

  17. The SSI regulations on planning before and during decommissioning of nuclear facilities; Foereskrifter om planering infoer och under avveckling av kaerntekniska anlaeggningar

    Energy Technology Data Exchange (ETDEWEB)

    Efraimsson, Henrik; Lund, Ingemar

    2003-09-01

    This report describes the considerations of the SSI in connection with the promulgation of Regulations on planning before and during decommissioning of nuclear facilities (SSI FS 2002:4). A summary of received comments on the issued draft regulations, including judgements of the SSI, is included.

  18. Planning of biogas plants. A question of co-operation and negotiation; Planering av biogasanlaeggningar. En fraaga om samverkan och foerhandling

    Energy Technology Data Exchange (ETDEWEB)

    Khan, Jamil

    2003-04-01

    During the last years there has been an increased interest in Sweden to build biogas reactors. The planning of a biogas plant brings about the need for co-operation between a variety of actors. Furthermore, there are a number of different issues that need to be dealt with. To build a biogas plant is thus a rather complicated thing to do. The aim of this report is to increase the knowledge about the processes that precede a decision to build a biogas plant, in order to try to facilitate the planning of future projects. The report is based on case studies of the planning of two biogas plants in Sweden and the empirical material consists of interviews with key persons as well as written documents. In the study, three parallel processes are identified and analysed, which are all crucial to carry through a project. These are the project planning process, the political process and the application process. The most important result of the study is that there is not only one way to carry through a project and that the choice of strategy depends on the character of the project and the different questions that need to be handled. Examples of other results are: the importance of an early and continuous dialogue with the political leadership, the necessity to build an organisation for the co-operation between key actors and that the project leaders should be flexible and open to changes in the project throughout the planning process.

  19. α、β粒子在钝化注入平面硅探测器中的脉冲形状分析%Pulse Shape of Alpha and Beta Particles in Passivated Implanted Planer Silicon Detector

    Institute of Scientific and Technical Information of China (English)

    田新; 肖无云; 王善强; 梁卫平

    2011-01-01

    There is a problem of cross counting of alpha and beta when samples are measured sometime. In order to resolve the problem, the article researches into the range of alpha and beta particles in PIPS derectors. The difference in range results in difference in charge collecting time, so the pulse shape is also different. The characters of pulse shape of alpha and beta particles in PIPS derectors are studied. The rise time of voltage signal is surveied and the change of rise time in different bias is analysed. Results of the research provied some useful reference to pulse shape discrimination of alpha and beta particles in PIPS derectors.%利用钝化注入平面硅探测器(PIPS)测量α、β时,某些情况下只通过能量甄别无法区分这两种粒子,而通过脉冲形状甄别的方法可以很好地解决这一问题.通过研究α、β粒子在PIPS中脉冲形状不同的机制,分析了脉冲形状的特征;测量分析了一款PIPS探测器的电压脉冲上升时间及其随偏压的变化;分析得出了对PIPS探测器进行脉冲形状甄别的基本条件,为利用脉冲形状对α、β进行甄别提供了参考.

  20. Adjustment of algorithm of calculation Monte Carlo for Electrons (eMC) in the ECLIPSE Planer; Ajuste de algoritmo de calculo Monte Carlo para electrones (eMC) en el planificador Eclipse Planner

    Energy Technology Data Exchange (ETDEWEB)

    Verde Velasco, J. M.; Garcia Repiso, S.; Martin rincon, C.; Ramos Pacho, J. A.; Delgado Aparicio, J. M.; Perez alvarez, M. E.; Saez Beltran, M.; Gomez Gonzalez, N.; Cons Perez, N.; Sena Espinel, E.

    2013-07-01

    The implementation of a Monte Carlo algorithm requires not only a careful series of steps, but also adjust various parameters of calculation which will influence both in the goodness of the calculation of doses as in the time required for the calculation, being necessary to reach a compromise solution that get acceptable calculation accuracy in a time of calculation which is acceptable. In this paper we present our experience in this setting. (Author)

  1. Utdrag av brottsförebyggande rekommendationer för planering av rörelsestråk, rekreationsområden och andra offentliga områden

    DEFF Research Database (Denmark)

    Grønlund, Bo

    2004-01-01

    Trykt som bilag i Bo Grønlund: Synspunkter på trygghetsfrågor i Västra Eriksberg, Göteborg, augusti 2004, 28 sider, skrevet til Tryggare och Mänskligare Göteborg og Göteborgs Stadsbyggnadskontor som kommentar til aktuelt planforslag....

  2. Analys och planering av likviditet : En studie av kassaflödesanalyser och prognosers interna användbarhet inom ABB, Manpower, Gina Tricot och Västerås stad

    OpenAIRE

    Sipi, Carina; Ström, Johanna; Hamrin, Sanna

    2012-01-01

    Nyckelord: Kassaflödesanalys, kassaflöde, likviditetsplanering, likviditetsbudget, likviditetsprognos, likviditet och nyckeltal. Frågeställning: Hur och varför använder de fyra valda organisationerna kassaflödesanalyser och -prognoser internt? Vilka är skillnaderna i de fyra organisationernas sätt att ställa upp och använda sig av kassaflödesanalyserna och -prognoserna och beror skillnaderna på i vilken bransch de verkar? Syfte: Syftet med uppsatsen är att undersöka hur kassaflödesanalyser oc...

  3. Blowers in practice. A manual for planners, constructors, and vocational training. 4. rev. and act. ed.; Ventilatoren in der Praxis. Das Handbuch fuer Planer, Anlagenbauer, Meister-, Techniker- und Ingenieurschulen

    Energy Technology Data Exchange (ETDEWEB)

    Lexis, J.

    2000-07-01

    The different specific properties and applications of radial blowers with and without casings, axial flow and cross-fow blowers are described with the aid of examples, comparisons and calculations. The book takes a practical attitude, i.e. theoretical elements like dimensionless characteristics are left out. The subject matter has been revised in consideration of the European standards (''EN''). [German] Dieses Handbuch dient dem planenden wie ausfuehrenden Lueftungs- und Klimaingenieur zur Loesung von ventilatortechnischen Problemstellungen. In einer praxisnahen Form sollen mit Hilfe von konkreten Beispielen, Gegenueberstellungen und Berechnungen die unterschiedlichen spezifischen Eigenschaften und Anwendungsgebiete von Radialventilatoren mit Gehaeuse, Radialventilatoren ohne Gehaeuse, Axial- und Querstromventilatoren aufgezeigt werden. Diese unterschiedlichen spezifischen Eigenschaften sind jedoch haeufig infolge zu theoretischer Behandlung dieser Thematik fuer den Klimaingenieur nicht leicht durchschaubar und bleiben daher vielfach unberuecksichtigt. Es wurde daher ganz bewusst auf die ansonsten in der Fachliteratur uebliche praxisfremde Darstellungsform dimensionsloser Kennlinien verzichtet. Vielen wertvollen Anregungen und Verbesserungsvorschlaegen folgend, wurden unter Beruecksichtigung der Europaeischen Normen ''EN'', die einzelnen Kapitel ergaenzt und ueberarbeitet. (orig.)

  4. Blower door measurements. Guide 'Airtightness-testing' for house owners and planners; Blower-Door-Messung. Leitfaden 'Gebaeudedichtigkeits-Pruefung' fuer Bauherren und Planer. Fachtext 3.4. Maerz 2003

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2003-03-01

    To determine the air tightness of the external envelope, blower door measurements are normally carried out. The thus determined integral figure for the complete structure is an insufficient basis for carrying out specific insulation procedures in existing buildings. Within the scope of the air tightness measurements with the blower door, additional measuring methods permit the determination of additional information on the leakage distribution and the leakage routes. The expanded measuring methods that are known from the bibliography 'opening a door' and 'adding a hole' as well as the new method of 'adding a hole plus' are explained, compared by means of exemplary measurements, and are considered for their suitability during field trials. [German] Zur Bestimmung der Luftdichtheit der Gebaeudehuelle werden im allgemeinen Blower Door-Messungen durchgefuehrt. Der hierbei bestimmte integrale Wert fuer das gesamte Gebaeude stellt fuer das Ergreifen von gezielten Abdichtungsmassnahmen im Gebaeudebestand eine zu geringe Basis dar. Weiterfuehrende Messmethoden erlauben, im Rahmen von Luftdichtheitsmessungen mit der Blower Door zusaetzliche Informationen ueber die Leckageverteilung und ueber Leckagewege zu bestimmen. Die aus der Literatur bekannten erweiterten Messmethoden 'Opening A Door' und 'Adding A Hole' sowie die neue Methode 'Adding A Hole Plus' werden erlaeutert, anhand von exemplarischen Messungen verglichen und im Feldeinsatz auf ihre Anwendbarkeit hin betrachtet.

  5. Blower door measurement. Guide 'Airtightness-testing' for house owners and planners; Blower-Door-Messung. Leitfaden 'Gebaeudedichtigkeits-Pruefung' fuer Bauherren und Planer. Fachtext 3.4

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2007-08-15

    The blower door is a simple to use measuring device for determining the seal of the external surfaces of buildings. The accuracy of the measurement is dependent to a considerable extent on the external climatic conditions that prevail at the time of taking the measurement. (orig.)

  6. Blower door measurements. Guide 'Airtightness-testing' for house owners and planners; Blower-Door-Messung. Leitfaden 'Gebaeudedichtigkeits-Pruefung' fuer Bauherren und Planer. Fachtext 3.4. Mai 2006

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2006-05-15

    The blower door is a simple to use measuring device for determining the seal of the external surfaces of buildings. The accuracy of the measurement is dependent to a considerable extent on the external climatic conditions that prevail at the time of taking the measurement. (GL)

  7. Avian post-construction studies and EIA for planned extension of the Hitra wind-power plant; EIA = environmental impact assessment; Ornitologisk etterundersoekelse og konsekvensutredning i tilknytning til planer for utvidelse av Hitra vindkraftverk

    Energy Technology Data Exchange (ETDEWEB)

    Bevanger, K.; Dahl, E.L.; Gjershaug, J.O.; Halley, D.J.; Hanssen, F.O.; Nygaard, T.; Pearson, M.; Pedersen, H.C.; Reitan, O.

    2010-03-15

    The results indicate that the annual number of dead birds recorded varies, and that an annual average probably is slightly less than two dead white-tailed eagles and four willow ptarmigans as long as 24 turbines are operating in the wind-power plant. The number of dead birds recorded is minimum figures. The total collision rate has not been estimated, however, the terrain where the power plant is located is difficult to search, and thus the habitat bias will be significant. Taking into account removal rate (scavenging bias) and search efficiency of the dog (search bias) it is assumed that the real number of casualties is somewhat higher. Dead birds are particularly found near turbines located at the edge of the power plant. There is insufficient evidence to conclude whether the recorded mortality for the white- tailed eagle is or is not acceptable with regard to short- or long-term population development. As regards the willow ptarmigan population, the data, while not conclusive, in combination with population censuses suggests that the power-plant extension will not be unacceptable for population development. Both for the white-tailed eagle and the willow ptarmigan an increased mortality must be expected when the power plant turbine number is increased.It is important to clarify whether there are established breeding pairs within the planning area, particularly in connection to the planned road access from the south. By building this road a general disturbance increase will take place. Whether the routing of the road will conflict with nest sites of red-listed species like the eagle owl and grey-headed wood- pecker is unknown as the routing not was known when the fieldwork took place during spring/summer 2009. There is, however, more reason to believe that the road might threaten an eagle owl territory than the contrary. The existing data are insufficient to conclude whether the encroachments connected to the road building from the south into the power-plant area are acceptable/unacceptable with regard to short- and long-term population development and survival for the eagle owl. Apart from this, construction of the Hitra 2 wind power plant is not considered to be unacceptable for the eagle owl, however, it cannot be ruled out that eagle owls will be killed by colliding with the power lines and/or turbines that will be constructed. The final routing plans for the power line seems to generate moderate conflicts with respect to bird collisions; however a prerequisite is that the line follows depressions in the terrain lowering the wires to a height below the treetops in forested areas. This is important with regard to collision hazard, as the tree canopy frequently determines the lower limit for bird flight height. One of the final plan drafts indicates a routing of the power line high up in the terrain, making it particularly exposed in the area from the southernmost turbines and transformer towards the central part of the power plant. Here the collision risk for grouse species as well as raptors and other species will be high. The alternative routing lower into the valley should be preferred. Areas where the terrain topography, together with solar radiation and prevailing wind directions, generate upward air currents (ridge-wind) are identified. Steep slopes towards the south are easily warmed by the sun and create potential areas for ridge wind/thermals. These are frequently used by white-tailed eagles and other raptors to gain height. Locating wind turbines, power lines or other man-made air obstacles in such areas, where frequent hang-wind/thermal generation takes place, may create an increased risk for bird collisions or injuries. Based on SpacEyes viewer, the user will be able to navigate within he terrain model and view the landscape and the turbine locations from a 'birds perspective' (own DVD attached). The final draft plan for the turbine locations indicates planned locations in areas where ridge winds are generated and thus an increased collision hazard for white-tailed eagles.(AG)

  8. The Wind Power Handbook. Planning and approval of wind power plants on shore and in coastal areas; Vindkraftshandboken. Planering och proevning av vindkraftverk paa land och i kustnaera vattenomraaden

    Energy Technology Data Exchange (ETDEWEB)

    2009-01-15

    The Wind Power Handbook is designed to make it easier for municipalities and wind energy companies to plan wind power projects. It contains the issues to be considered when planning and review, both the legal bases under essentially Planning and Building Act and the Environmental Code and the environmental assessments. The manual is primarily addressed to the municipalities and various operators. There are many interests to be met at a wind power establishment, which requires knowledge and cooperation of the different actors on the planning and approval process to be effective. Here we have gathered important knowledge base to facilitate the process and to contribute to a balanced decision

  9. Overvejelser vedr. effektvurdering af det Digitale Sygehus

    DEFF Research Database (Denmark)

    Andersen, Povl Erik Rostgård; Wit, Camilla Kølsen de

    2001-01-01

    Nærværende skrift indeholder en beskrivelse af de overvejelser og planer, der er lavet på projektet 'Effektvurdering af Det Digitale Sygehus' medio dec. 2001.......Nærværende skrift indeholder en beskrivelse af de overvejelser og planer, der er lavet på projektet 'Effektvurdering af Det Digitale Sygehus' medio dec. 2001....

  10. Overvejelser vedr. effektvurdering af det Digitale Sygehus

    DEFF Research Database (Denmark)

    Andersen, Povl Erik Rostgård; Wit, Camilla Kølsen de

    2001-01-01

    Nærværende skrift indeholder en beskrivelse af de overvejelser og planer, der er lavet på projektet 'Effektvurdering af Det Digitale Sygehus' medio dec. 2001.......Nærværende skrift indeholder en beskrivelse af de overvejelser og planer, der er lavet på projektet 'Effektvurdering af Det Digitale Sygehus' medio dec. 2001....

  11. En målsättning för de Andra: Förskolepedagogers tal om barn och föräldrar under planering och utvärdering på en förskola med en kulturellt blandad barngrupp

    Directory of Open Access Journals (Sweden)

    Johannes Lunneblad

    2010-02-01

    Full Text Available This article displays how a multicultural way of working in early childhood education is articulated during planning and evaluation. The results shows that it is articulated as an objective or goal for the Other. The objectives for a multicultural way of working fall outside of the regular activities. In these discussions, the immigrant parents are articulated in ambivalent positions, linked to a specific interests and responsibilities. At the same time as the pedagogues are making clear that parents must not feel that this is a demand or a coercion. It is possible to draw parallels with how integration policies are realized in practice, where multiculturalism has become associated with non-integrated pupils and their parents, and where the responsibility for lack of integration is often placed within these groups.

  12. Plan og virkelighed

    DEFF Research Database (Denmark)

    Kaufmann, E.

    Der er dén bagside ved altid at se fremad og lægge planer, at man ikke rigtigt får tid til at se bagud og lære af sine fejl. I denne bog er det imidlertid forsøgt at se tilbage på to mindre planer, som blev lagt for 20 år siden. Hvordan svarer virkelighed til plan?......Der er dén bagside ved altid at se fremad og lægge planer, at man ikke rigtigt får tid til at se bagud og lære af sine fejl. I denne bog er det imidlertid forsøgt at se tilbage på to mindre planer, som blev lagt for 20 år siden. Hvordan svarer virkelighed til plan?...

  13. Latter, forvirring, undren og vrede

    DEFF Research Database (Denmark)

    Eskildsen, Kasper Risbjerg

    2007-01-01

    RUC har planer om at podcaste forelæsninger. Men i et auditorium gælder andre regler end i fagtidsskrifter. Man kan afprøve ideer og lufte pludselige indfald; udlevere sig selv, blive skudt i sænk. Det fordrer frihed......RUC har planer om at podcaste forelæsninger. Men i et auditorium gælder andre regler end i fagtidsskrifter. Man kan afprøve ideer og lufte pludselige indfald; udlevere sig selv, blive skudt i sænk. Det fordrer frihed...

  14. Første generation af miljøvurdering af kommune- og lokalplaner

    DEFF Research Database (Denmark)

    Larsen, A.; Lyhne, I.; Kristensen, J.N.;

    2006-01-01

    Artiklen præsenterer den første statusopgørelse på kommunernes arbejde med Lov om miljøvurdering af planer og programmer (SMV) og er den første empiriske undersøgelse af, hvad loven betyder for kommunernes planlægning.......Artiklen præsenterer den første statusopgørelse på kommunernes arbejde med Lov om miljøvurdering af planer og programmer (SMV) og er den første empiriske undersøgelse af, hvad loven betyder for kommunernes planlægning....

  15. Det midlertidiges Arkitektur og de bykulturelle rationaler

    DEFF Research Database (Denmark)

    Andersson, Lasse

    2011-01-01

    Det midlertidiges arkitektur eller Pop-up Urbanismen er en modreaktion til 00’ernes, strømlinede planer uden plads til eksperimenter i byen. Det interessante er, at modreaktionen ikke blot kommer fra ’the ususal suspects’ som ofte er kunstneriske grupperinger, ungdomskulturerne, de kreative iværk...... iværksættermiljøer samt enlige kritiske forskere. men også fra de, der står bag de store planer såsom By og Havn, Carlsberg Byen, Odense Kommune, Realdania sådan som det ses i diagrammet over det midlertidiges arkitektur og kulturens rationaler....

  16. Mars bevares

    DEFF Research Database (Denmark)

    Hendricks, Vincent Fella; Hendricks, Elbert

    2009-01-01

    2009 er femåret for Mission Mars. I den anledning opridser de to kronikører, far og søn, hvorfor man bør lade planer om en bemandet tur til Mars forblive i skrivebordsskuffen......2009 er femåret for Mission Mars. I den anledning opridser de to kronikører, far og søn, hvorfor man bør lade planer om en bemandet tur til Mars forblive i skrivebordsskuffen...

  17. Fatigue crack growth simulations of 3-D linear elastic cracks under thermal load by XFEM

    Institute of Scientific and Technical Information of China (English)

    Himanshu PATHAK[1; Akhilendra SINGH[2; I.V. SINGH[3; S. K. YADAV[3

    2015-01-01

    This paper deals with the fatigue crack growth simulations of three-dimensional linear elastic cracks by XFEM under cyclic thermal load. Both temperature and displacement approximations are extrinsically enriched by Heaviside and crack front enrichment functions. Crack growth is modelled by successive linear extensions, and the end points of these linear extensions are joined by cubic spline segments to obtain a modified crack front. Different crack geometries such as planer, non-planer and arbitrary spline shape cracks are simulated under thermal shock, adiabatic and isothermal loads to reveal the sturdiness and versatility of the XFEM approach.

  18. Investigation of Surface Phenomena in Shocked Tin in Converging Geometry

    Energy Technology Data Exchange (ETDEWEB)

    Rousculp, Christopher L. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Oro, David Michael [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Griego, Jeffrey Randall [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Turchi, Peter John [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Reinovsky, Robert Emil [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Bradley, Joseph Thomas [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Cheng, Baolian [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Freeman, Matthew Stouten [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Patten, Austin Randall [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2016-04-14

    There is a great interest in RMI as source of ejecta from metal shells. Previous experiments have explored wavelength amplitude (kA) variation but they have a small range of drive pressures and are in planer geometry. Simulations, both MD and hydro, have explored RMI in planer geometry. The ejecta source model from RMI is an area of active algorithm and code development in ASCI-IC Lagrangian Applications Project. PHELIX offers precise, reproducible variable driver for Hydro and material physics diagnoses with proton radiography.

  19. Reconstruction of less regular conductivities in the plane

    DEFF Research Database (Denmark)

    Knudsen, Kim; Tamasan, Alexandru

    2004-01-01

    We consider the inverse conductivity problem of how to reconstruct an isotropic electric conductivity distribution in a conductive body from static electric measurements on the boundary of the body. An exact algorithm for the reconstruction of a conductivity in a planer domain from the associated...

  20. Fem gode råd til motion i hverdagen

    DEFF Research Database (Denmark)

    Suhr, Lasse Kristian

    2014-01-01

    Ferietid er tid til at lade op. Det kan man blandt andet gøre ved at dyrke motion. Men måske kan du også bruge ferien på at lægge planer for, hvordan du får plads til motion på programmet, når du vender tilbage til hverdagen....

  1. Liquid crystal colloids

    Directory of Open Access Journals (Sweden)

    2010-01-01

    Full Text Available This special issue of "Condensed Matter Physics" focuses on the most recent developments in the study of a fascinating soft matter system, representing colloidal particles in a liquid crystalline environment. Furthermore, some articles address pioneering steps in the discovery of liquid crystals going back to 1861 paper by Julius Planer.

  2. Education and Koranic Literacy in West Africa

    OpenAIRE

    Easton, Peter

    1999-01-01

    The note examines the practical, and literate skills that students acquire at different levels in West African Koranic schools. It is a long-standing parallel system of education, yet, relatively unknown to development planers, thus seldom taken into explicit account in their policies, and strategies. Islamic educational systems have been present since the seventh century, and by the tenth ...

  3. Uddannelsespolitik i USA

    DEFF Research Database (Denmark)

    Bundsgaard, Jeppe

    2016-01-01

    Washington Post har stillet præsidentkandidaterne en række konkrete spørgsmål om deres planer for uddannelsesområdet. Der er mange interessante overvejelser om test, fælles mål, finansiering af skoler mv....

  4. Civile Droner i Danmark

    DEFF Research Database (Denmark)

    Lygum, Anne; Nielsen, Jakon Skjødt; Bådum, Nicklas Bang

    2014-01-01

    kreds af interessenter og myndigheder. Kortlægningen gennemgår: Dansk og international regulering på området og planer for droners integration i det generelle luftrum Aktuel og potentiel drone-anvendelse inden for områderne beredskab, inspektion, geodata, natur/miljøovervågning og landbrug, samt andre...

  5. 76 FR 17019 - List of Approved Spent Fuel Storage Casks: HI-STORM Flood/Wind Addition

    Science.gov (United States)

    2011-03-28

    ... Reactor (BWR) fuel with high initial enrichment (up to 4.8 weight percent uranium-235 planer average...) The ability to store and transport BWR fuel with high initial enrichment (up to 4.8 weight percent... part 72, entitled ``General License for Storage of Spent Fuel at Power Reactor Sites'' (55 FR...

  6. Initial education and training of adult teachers and trainers in Denmark

    DEFF Research Database (Denmark)

    Larson, Anne; Milana, Marcella

    2010-01-01

    Artiklen giver på baggrund af et studie af politiske strategier og planer fra vedtagelsen af EU's Lissabon-strategi for livslang læring i 2000 til i dag et overblik over udviklingen i den politiske interesse for uddannelse af voksenundervisere forud for og efter deres ansættelse inden for voksenu...

  7. Tunable plasmon resonance in the nanobars and split ring resonator(SRR) composite structure

    Science.gov (United States)

    Xu, Haiqing; Li, Hongjian; Xiao, Gang; Chen, Qiao

    2016-10-01

    We have proposed a multi-band metamaterials composed of bars and planer SRR. There are three sharp peaks in the transmission spectra in the visible and near-infrared region, we find that the transmission spectra are highly tunable as the coupling and geometric parameters modifying, especially the third peak in the near-infrared region. When the gap distance between the two nanobar g1<14 nm, the original first peak will split, a new dip and peak will exist, which is results from the high-order plasmon resonance. When introducing asymmetry to the planer SRR, a new sharp peak accompany with a new sharp dip exists in the original second peak, which is originated from the strong electric field resonance. We also find that the proposed structures with sensing sensitivity of ~467 nm/RIU, which can be used for plasmonic sensor.

  8. Framkomlighetsanalys av Stockholms cykelvägnät : en pendelcyklists vardag

    OpenAIRE

    Gustafsson, Louise

    2009-01-01

    Examensarbetet syftar till att inhämta kunskap om planering för cykeltrafik i städer och att identifiera problem som uppkommer när andelen cyklister ökar i städerna. Framkomligheten och trafiksäkerheten påverkas när andelen cyklister ökar och dessa problem studeras i examensarbetet. Examensarbetet grundas på en litteraturstudie där kunskap om cykeltrafik och planering för cykelplanering har inhämtas. Vidare har liknande studier om cykeltrafik i städer sökts. Då arbetet är en pilotstudie och s...

  9. Brasilien bygger sit eget internet

    DEFF Research Database (Denmark)

    Hansen, Kenneth; Føhns, Henrik

    2014-01-01

    Den brasilianske præsident Dilma Rousseff har sat blus under landets planer om at lave et internet, der ikke løber gennem USA, og hvor brasilianske borgeres data bliver på servere i Brasilien – også selvom de ligger hos Google eller Facebook. Hun vil også have det nationale postvæsen til at tilby...... brasilianerne krypteret e-mail....

  10. Technology Adoption, Socila Learning, and Economic Policy

    OpenAIRE

    Paul Heidhues; Nicolas Melissas

    2010-01-01

    We study a two-player dynamic investment model with information externalities and provide necessary and sufficient conditions for a unique switching equilibrium. When the public information is sufficiently high and a social planer therefore expects an investment boom, investments should be taxed. Conversely, any positive investment tax is suboptimally high if the public information is sufficiently unfavorable. We also show that an investment tax may increase overall investment activity.

  11. Das Bildprogramm und die Raumfunktion in den Nubischen Felstempeln Ramses'II.

    OpenAIRE

    Mohamed , Mohamed Hossam Abdel Wahab

    2014-01-01

    Die vorliegende Arbeit beschäftigt sich mit den sechs nubischen Felstempeln Ramses’II. Es wird der Frage nachgegangen, ob diese Tempelkomplexe einem bestimmten System in ihre Lage, Architektur und Darstellungen folgen. Ziel ist es zu versuchen, den Überlegungen der Planer der verschiedenen Räume zu folgen, die Systematik hinter den Darstellungsabfolgen und die Beziehung zwischen den verschiedenen Szenen darzustellen, sowie die Entwicklung der Königsideologie innerhalb dieser Reihe. Es wird ve...

  12. Brasilien bygger sit eget internet

    DEFF Research Database (Denmark)

    Hansen, Kenneth; Føhns, Henrik

    2014-01-01

    Den brasilianske præsident Dilma Rousseff har sat blus under landets planer om at lave et internet, der ikke løber gennem USA, og hvor brasilianske borgeres data bliver på servere i Brasilien – også selvom de ligger hos Google eller Facebook. Hun vil også have det nationale postvæsen til at tilbyde...

  13. Århus i Verden

    DEFF Research Database (Denmark)

    Koefoed, Nina Javette

    . Beslutningstagerne i byerne er nødt til at udtænke nye strategier for fremtiden og til at tage byens identitet op til diskussion. Men hvad er nyt, og hvad er gammelt i denne sammenhæng? Er verden udenfor en trussel eller en berigelse? Har Århus ikke altid måttet bestræbe sig på at lægge planer for fremtiden, og er...

  14. Centrifugal shot blasting. Innovative technology summary report

    Energy Technology Data Exchange (ETDEWEB)

    1999-07-01

    At the US Department of Energy (DOE) Fernald Environmental Management Project (FEMP), the Facilities Closure and Demolition Projects Integrated Remedial Design/Remedial Action (RD/RA) work plan calls for the removal of one inch (1 in) depth of concrete surface in areas where contamination with technetium-99 has been identified. This report describes a comparative demonstration between two concrete removal technologies: an innovative system using Centrifugal Shot Blasting (CSB) and a modified baseline technology called a rotary drum planer.

  15. Kan det amerikanske demokrati rejse sig fra valgkampens aske?

    DEFF Research Database (Denmark)

    Rosenbaum, Philip

    2016-01-01

    For både Trump og Clinton handler det i høj grad om at tilkendegive deres utilfredshed og intolerance overfor modparten, men i ligeså høj grad også om at definere og manifestere deres egne politiske positioner i partiernes fremadrettede planer. Sidstnævnte har vist sig at være en utrolig vanskelig...

  16. Buller : Hur planeras en bullerfri stad?

    OpenAIRE

    Milosevic, Suncica

    2015-01-01

    Milosevic, S. 2014. Buller – Hur planers en bullerfri stad?. Kulturgeografiska institutionen, Uppsatser, Uppsala universitet.   This essay is about noise pollution caused by urbanization. The field study takes place in Uppsala and explores their organization of handling problems with noise pollution caused by traffic. Noise pollution has long been neglected as an environmental hazard. Studies show that noise pollution can cause severe health problems such as increased blood pressure. Therefor...

  17. Expedient Spall Repair Methods and Equipment for Airfield Pavements Preprint

    Science.gov (United States)

    2009-08-01

    portable pneumatic jackhammer. ACI RAP Bulletin 7 recommends that jackhammers larger than 30 lbs not be used, because they may cause damage to the...cold planer, designed for restoration of asphalt and concrete surfaces for small paving jobs, has a drum width of 24 inches. The drum featured 60...Application Procedures: Spall Repair of 21 Horizontal Concrete Surfaces, ACI RAP Bulletin 7, American Concrete Institute, 2005. 5. International

  18. Nanocrystalline Mixed Ligand Complexes of Cu (II, Ni (II, Co (II with N, O Donor Ligands: Synthesis, Characterization, and Antimicrobial Activity

    Directory of Open Access Journals (Sweden)

    Kolhe Nitin H

    2016-12-01

    Full Text Available In present investigation nanocrystalline mixed ligand complexes were synthesized using 8-hydroxyquinoline, salicylaldoxime with metals like Cu (II, Ni (II and Co (II. The metal: ligand ratio was found to be 1:1:1. These complexes were characterized using electronic spectra, FTIR spectra, elemental analysis, magnetic susceptibility, thermogravimetric analysis, conductivity measurement, powder X-ray diffraction and Scanning Electron Microscopy with electron dispersive spectroscopic methods. The electronic spectra of complexes suggest that they have square planer geometries. In FTIR analysis characteristic bands of ν (M-N and ν (M-O.The Co (II and Cu (II complexes are paramagnetic in nature and these had square planer geometry. While Ni (II complexes are diamagnetic nature and having square planer geometry. The thermal analysis of complexes was studied in an attempt to assign intermediate compounds. Low molar conductance values indicate non – electrolytic nature of the complexes. The Powder X-ray diffraction study shows formation of nanocrystalline phase as well as the grain size of complexes is less than 10 nm. The EDS study is shows good agreement for formation of mixed ligand metal complexes . Complex: [C16H12CuN2O2], [C14H12N2NiO4 ], [C16H12NiN2O2] and [C16H12CoN2O2] had antimicrobial activity against four bacteria tested. Bacteria were resistant to other five complexes.

  19. Exact solution of planar and nonplanar weak shock wave problem in gasdynamics

    Energy Technology Data Exchange (ETDEWEB)

    Singh, L.P. [Department of Applied Mathematics, Institute of Technology, Bananas Hindu University, Varanasi 221 005 (India); Ram, S.D., E-mail: sram.rs.apm@itbhu.ac.in [Department of Applied Mathematics, Institute of Technology, Bananas Hindu University, Varanasi 221 005 (India); Singh, D.B. [Department of Applied Mathematics, Institute of Technology, Bananas Hindu University, Varanasi 221 005 (India)

    2011-11-15

    Highlights: > An exact solution is derived for a problem of weak shock wave in adiabatic gas dynamics. > The density ahead of the shock is taken as a power of the position from the origin of the shock wave. > For a planar and non-planar motion, the total energy carried by the wave varies with respect to time. > The solution obtained for the planer, and cylindrically symmetric flow is new one. > The results obtained are also presented graphically for different Mach numbers. - Abstract: In the present paper, an analytical approach is used to determine a new exact solution of the problem of one dimensional unsteady adiabatic flow of planer and non-planer weak shock waves in an inviscid ideal fluid. Here it is assumed that the density ahead of the shock front varies according to the power law of the distance from the source of disturbance. The solution of the problem is presented in the form of a power in the distance and the time.

  20. Den private boligfornyelse i ældre andelsboliger og private udlejningsejendomme

    DEFF Research Database (Denmark)

    Andersen, Hans Skifter

    Denne SBI-meddelelse redegør for resultaterne af en undersøgelse af den private boligfornyelsesaktivitet i private udlejningsboliger og andelsboliger i ældre flerfamiliehuse. Det drejer sig om nogle af de ældste og dårligste boliger i boligbestanden. Meddelelsen redegør for, hvor meget der er...... investeret i forbedring og vedligeholdelse i 1991-92, hvad der er investeret i, og hvorfor. Desuden belyses renoveringsbehovene, ejernes planer for 1993-94 og deres opfattelse af hvad der hindrer en øget privat boligfornyelse. Meddelelsen giver også information om de nye tilskudsordningers virkninger....

  1. Konceptframtagning av kaffebryggare för kaffeentusiaster.

    OpenAIRE

    Gunnarsson, Jacob

    2016-01-01

    Uppdragsgivaren 3TEMP AB har visionen att med en ny produkt kunna ta sig in på hemmamarknaden för kaffeutrustning. De har planer på en produkt som fungerar som en automatisk kaffebryggare som maler kaffebönor och fyller en kopp. Företaget har lösningar för hur produktens huvudfunktioner skall fungera rent tekniskt, men behöver ett konkret koncept.  Examensarbetet är genomfört som ett projekt med en projektplan innehållande tidplan, riskhantering, organisation och filhantering. Projektet besto...

  2. Beboerservice i boligområder

    DEFF Research Database (Denmark)

    Pedersen, D.O.

    Rapporten er en vejledning for beboere og andre initiativtagere i, hvordan man fremmer planer, beslutninger og samarbejde om etablering af beboerservice i boligområder. Formålet er at gøre boligområdet til et bedre sted at bo, for især ældre beboere, med hensyn til generel service, omsorg, nabosk...... og tryghed. Beboerservice kan dog med fordel rettes til alle typer beboere i et boligområde, unaset om der er tale om almene eller private boliger, etagehuse eller lav bebyggelse. Vejledningen henvender sig til boligafdelinger, lejer- og ejerforeninger samt kommuner....

  3. New computer-assisted design of blower convectors; Neue computerunterstuetzte Auslegung von Geblaesekonvektoren

    Energy Technology Data Exchange (ETDEWEB)

    Enzensperger, M. [Axair GmbH, Garching-Hochbrueck (Germany)

    1999-08-01

    The problem is well-known: in the air conditioning market, an increasing trends towards blower convectors has emerged recently. Often the devices are exactly tailored to special applications, requiring accurate rating. The design of blower convectors must correspond to planning specifications. The available technical data deviate from the standard data sheets of manufacturers. (orig.) [German] Wer kennt das Problem nicht: In letzter Zeit ist auf dem Klimamarkt ein verstaerkter Trend zu Geblaesekonvektoren festzustellen. Die Projekte werden oft speziell auf die Anwendungsfaelle zugeschnitten und erfordern eine genauere Auslegung. Gemaess den Angaben eines Planers muss ein Geblaesekonvektor ausgelegt werden. Die vorliegenden technischen Daten weichen von den Standard-Herstellerangaben ab. (orig.)

  4. Surface planarization of Cu and CuNiSn Micro-bumps embedded in polymer for below 20μm pitch 3DIC applications

    OpenAIRE

    De Preter, Inge; Derakhshandeh, Jaber; Heylen, Nancy; Van Acker, Lut; June Rebibis, Kenneth; Miller, Andy; Beyer, Gerald; Beyne, Eric

    2016-01-01

    Planarization techniques such as Surface planer (better known as Fly-cut) and chemical-mechanical polishing (CMP) can be used to improve the bump roughness and bump height uniformity within the die and wafer which can be beneficial for solder based bump stacking and Cu-Cu direct bonding [1]. In this paper the influence of both planarization techniques on 20μm pitch Cu and CuNiSn bumps embedded in polymer are studied. The polymer protects the bumps from the shearing force of the planarization ...

  5. Modeling of linear divertor plasma simulator experiments with three-dimensional target structure by using EMC3-eIRENE code

    Energy Technology Data Exchange (ETDEWEB)

    Kuwabara, T. [Institute of Materials and Systems for Sustainability, Nagoya University, Nagoya (Japan); Tanaka, H.; Kobayashi, M. [National Institute for Fusion Science, Toki (Japan); SOKENDAI (The Graduate University For Advanced Studies), Toki (Japan); Kawamura, G. [National Institute for Fusion Science, Toki (Japan); Ohno, N.; Nishikata, H. [Graduate School of Engineering, Nagoya University, Nagoya (Japan); Feng, Y. [Max-Planck-Institut fuer Plasmaphysik, Euratom Association, Garching/Greifswald (Germany)

    2016-08-15

    We have adapted the EMC3-EIRENE code for modeling of a linear divertor plasma simulator in order to demonstrate plasma-wall interactions with three-dimensional (3D) effects. 3D distributions of hydrogen plasma and neutrals can be successfully calculated for four different types of target plates: a V-shaped target, inclined targets with open and closed structures, and a planer target. Hydrogen atoms and molecules are accumulated more effectively in the V-shaped target plate, leading to a higher electron density with lower electron temperature than the planar target plate. (copyright 2016 WILEY-VCH Verlag GmbH and Co. KGaA, Weinheim)

  6. Climate to measure. Facility management for Universal Music at Berlin; Klima nach Mass. TGA-Planung fuer Universal Music in Berlin

    Energy Technology Data Exchange (ETDEWEB)

    McLead, E.A.

    2002-07-01

    Designing and constructing the technical facilities for a historical building like the 'Spreespeicher' in Berlin is a difficult but interesting task. The building is owned by Universal Music. Each department has its own office structure, and all offices and structures were integrated in a functional overall concept by the planners of Happold Ingenieure. [German] Klima, Lueftung und Elektroinstallation fuer ein historisches Gebaeude wie den Berliner Spreespeicher zu entwickeln, ist eine schwierige, aber reizvolle Aufgabe. Besonders, wenn der Nutzer Universal Music heisst: Jede Abteilung besitzt ihre eigene Buerostruktur, und alle mussten die TGA-Planer von Happold Ingenieure in ein funktionierendes Gesamtkonzept integrieren. (orig.)

  7. BIOMECHANIC EVALUATION OF CARPENTRY WORKERS IN THE DISTRITO FEDERAL, BRAZIL

    Directory of Open Access Journals (Sweden)

    Nilton Cesar Fiedler

    2010-08-01

    Full Text Available The aim of this study was the biomechanical assessment of carpentry woodworkers, located in Brasília, DF. It was filmed the profile of each worker during the performance of his activities in the carpentry and the forces involved in the work were assessed. The image of each woodworker was congealed to accomplish the measurement of articulation angles. The data were submitted to the software of posture analysis “Winowas” (OWAS Method and to the biomechanic model of posture prognosis and static forces, developed by Michigan University. The OWAS method showed that, for all machines and carpentries assessed, the worst posture occurred when the worker lifted and placed the pieces of wood on the floor and during the feeding in the smoother. The tridimensional biomechanic model registered the worst posture in different phases of the work cycle. In the first one, there were problems in all articulations, except the hips, when placing the pieces on the floor from the smoother. In the second one, there were problems in all articulations, except the elbows and the L5-S1 column disc, by feeding the surface planer. The third one, the ankles were the most injured when feeding the smoother, the surface planer, the circular saw and the band saw. According to the results, the woodworkers should try to eliminate the constant work standing upright, use auxiliary machinery to handle pieces of wood, reduce the load during feeding the machines and improve postures.

  8. Avaliação biomecânica dos trabalhadores em marcenarias no distrito federal

    Directory of Open Access Journals (Sweden)

    Nilton Cesar Fiedler

    2003-01-01

    Full Text Available The aim of this study was the biomechanical assessment of carpentry woodworkers, located in Brasília, DF. It was filmed the profile of each worker during the performance of his activities in the carpentry and the forces involved in the work were assessed. The image of each woodworker was congealed to accomplish the measurement of articulation angles. The data were submitted to the software of posture analysis “Winowas” (OWAS Method and to the biomechanic model of posture prognosis and static forces, developed by Michigan University. The OWAS method showed that, for all machines and carpentries assessed, the worst posture occurred when the worker lifted and placed the pieces of wood on the floor and during the feeding in the smoother. The tridimensional biomechanic model registered the worst posture in different phases of the work cycle. In the first one, there were problems in all articulations, except the hips, when placing the pieces on the floor from the smoother. In the second one, there were problems in all articulations, except the elbows and the L5-S1 column disc, by feeding the surface planer. The third one, the ankles were the most injured when feeding the smoother, the surface planer, the circular saw and the band saw. According to the results, the woodworkers should try to eliminate the constant work standing upright, use auxiliary machinery to handle pieces of wood, reduce the load during feeding the machines and improve postures.

  9. Effects of metallic nanoparticle doped flux on the interfacial intermetallic compounds between lead-free solder ball and copper substrate

    Energy Technology Data Exchange (ETDEWEB)

    Sujan, G.K., E-mail: sgkumer@gmail.com; Haseeb, A.S.M.A., E-mail: haseeb@um.edu.my; Afifi, A.B.M., E-mail: amalina@um.edu.my

    2014-11-15

    Lead free solders currently in use are prone to develop thick interfacial intermetallic compound layers with rough morphology which are detrimental to the long term solder joint reliability. A novel method has been developed to control the morphology and growth of intermetallic compound layers between lead-free Sn–3.0Ag–0.5Cu solder ball and copper substrate by doping a water soluble flux with metallic nanoparticles. Four types of metallic nanoparticles (nickel, cobalt, molybdenum and titanium) were used to investigate their effects on the wetting behavior and interfacial microstructural evaluations after reflow. Nanoparticles were dispersed manually with a water soluble flux and the resulting nanoparticle doped flux was placed on copper substrate. Lead-free Sn–3.0Ag–0.5Cu solder balls of diameter 0.45 mm were placed on top of the flux and were reflowed at a peak temperature of 240 °C for 45 s. Angle of contact, wetting area and interfacial microstructure were studied by optical microscopy, field emission scanning electron microscopy and energy-dispersive X-ray spectroscopy. It was observed that the angle of contact increased and wetting area decreased with the addition of cobalt, molybdenum and titanium nanoparticles to flux. On the other hand, wettability improved with the addition of nickel nanoparticles. Cross-sectional micrographs revealed that both nickel and cobalt nanoparticle doping transformed the morphology of Cu{sub 6}Sn{sub 5} from a typical scallop type to a planer one and reduced the intermetallic compound thickness under optimum condition. These effects were suggested to be related to in-situ interfacial alloying at the interface during reflow. The minimum amount of nanoparticles required to produce the planer morphology was found to be 0.1 wt.% for both nickel and cobalt. Molybdenum and titanium nanoparticles neither appear to undergo alloying during reflow nor have any influence at the solder/substrate interfacial reaction. Thus, doping

  10. Techno-economic feasibility of energy supply of remote villages in Palestine by PV-systems, diesel generators and electric grid

    Energy Technology Data Exchange (ETDEWEB)

    Mahmoud, Marwan M.; Ibrik, Imad H. [Energy Research Centre, An-Najah National University, Nablus, P.O. Box 721, West Bank (Palestine)

    2006-04-01

    As a contribution to the development program of rural areas in Palestine, this paper presents three energy supply alternatives for a remote village represented in PV system, diesel generator and electric grid. Design of these systems and the associated costs of their utilization are illustrated. A computer-aided dynamic economic evaluation method with five indicators is used to compare the economic-effectiveness of these energy systems. The results show that, utilizing of PV systems for rural electrification in Palestine is economically more feasible than using diesel generators or extension of the high voltage electric grid. The obtained results represents also a helpful reference for energy planers in Palestine and justify the consideration of PV systems more seriously. (author)

  11. Analysis and Simulation of Sierpinski Carpet Type Fractal Multiband Antenna for Wide Band Applications

    Directory of Open Access Journals (Sweden)

    Dwivedi, S.

    2015-08-01

    Full Text Available Micro strip patch antennas became very popular because of planer profile, ease of analysis and fabrication, compatibility with integrated circuit technology & their attractive radiation characteristics. Here, in this particular paper, author main focus is on fractal based rectangular microstrip patch antenna, whose thickness is 1.6mm and substrate material Flame Retardant 4 (FR-4 with a dielectric constant of approximately 4.4, is a line feed and has a partial ground plane. After simulation, the antenna performance characteristics such as antenna input impedance, VSWR, Return Loss are analysed and discussed in this paper. This antenna is used as a mobile antenna and Wi-Fi antenna for communication purposes like WiMax and WiFi. Use of fractal antenna can meet the need of all modern communication with a boom in an era of todays technologies with thin section, small size, being easy to manufacture and low price.

  12. Structure of a zinc oxide ultra-thin film on Rh(100)

    Energy Technology Data Exchange (ETDEWEB)

    Yuhara, J.; Kato, D.; Matsui, T. [Department of Materials, Physics and Energy Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603 (Japan); Mizuno, S. [Department of Molecular and Material Sciences, Kyushu University, Kasuga, Fukuoka 816–8580 (Japan)

    2015-11-07

    The structural parameters of ultra-thin zinc oxide films on Rh(100) are investigated using low-energy electron diffraction intensity (LEED I–V) curves, scanning tunneling microscopy (STM), and first-principles density functional theory (DFT) calculations. From the analysis of LEED I–V curves and DFT calculations, two optimized models A and B are determined. Their structures are basically similar to the planer h-BN ZnO(0001) structure, although some oxygen atoms protrude from the surface, associated with an in-plane shift of Zn atoms. From a comparison of experimental STM images and simulated STM images, majority and minority structures observed in the STM images represent the two optimized models A and B, respectively.

  13. A Microstripe Slotted Patch Antenna Using Amc

    Directory of Open Access Journals (Sweden)

    Manju Saini,

    2014-04-01

    Full Text Available Microstrip patch antenna offer an attractive solution to compact and ease-low-cost design of modern wireless communication system due to their many advantages as light weight and low volume, low profile, planer configuration which can be easily made conformal to low fabrication cost and capability of obtaining dual and triple frequency operations. A microstrip patch antenna with bandwidth enhancement by means of artificial magnetic conductor (AMC/electromagnetic band-gap structure (EBG is studied in this paper. The three different geometry shapes, the U, E and H are developed from rectangular patch. The antennas studied in this paper are simulated using sonnet software and results compared with the conventional rectangular patch antenna. The results obtained clearly shows that , bandwidth of conventional rectangular microstrip antenna can be enhanced has been studied

  14. Techno-economic feasibility of energy supply of remote villages in Palestine by PV-systems, diesel generators and electric grid (Case studies: Emnazeil and Atouf villages)

    Energy Technology Data Exchange (ETDEWEB)

    Ibrik, Imad [An-Najah National Univ., Nablus (PS). Energy Research Centre; Lecumberri, Marta

    2010-07-01

    The energy situation in Palestine is somewhat unique when compared to other countries in the Middle East. There are virtually no available natural resources, and due to the ongoing political situation, the Palestinians rely (or have to rely) almost totally on Israel for their energy needs. This paper presents three energy supply alternatives for a remote village represented in PV system, diesel generator and electric grid. Design of these systems and the associated costs of their utilization are illustrated. Economic evaluation methods are used to compare the economic-effectiveness of these energy systems. The results show that, utilizing of PV systems for rural electrification in Palestine is economically more useful than using diesel generators or extension of the high voltage electric grid. The obtained results represents also a helpful reference for energy planers in Palestine and justify the consideration of PV systems more seriously. (orig.)

  15. Photovoltaic energy conversion: Unlimited power supply. Optimized construction and use of grid-connected solar power systems; Fotovoltaik: Strom ohne Ende. Netzgekoppelte Solarstromanlagen optimal bauen und nutzen

    Energy Technology Data Exchange (ETDEWEB)

    Seltmann, T.

    2000-08-01

    The book presents details on PV systems: Technical features, legal and financial aspects, exemplary systems, check lists. The text is supplemented by many pictures and diagrams. [German] Haben Sie schon einmal daran gedacht, ein eigenes Solarkraftwerk zu betreiben? Dieses Buch erklaert Ihnen einfach und uebersichtlich wie das geht. Sie erfahren nicht nur technische Details, sondern bekommen auch kompetente Antworten auf rechtliche und finanzielle Fragen. Beispiele und Checklisten helfen Ihnen bei Planung, Auswahl und Kauf. Uebersichtlich gegliedet, farbig illustriert mit zahlreichen Fotos und Grafiken bietet es interessante Informationen und dem Anlagenbetreiber viele nuetzliche Tipps. Wenn Sie Nutzer oder Planer von Solaranlagen sind, sind einfach nur fuer diese faszinierende Technik interessieren oder eine eigene Solarstromanlage bauen moechten, ist dieses Buch genau das richtige fuer Sie. (orig.)

  16. High Quality Factor MBE-grown Aluminum on Silicon Planar Resonators

    Science.gov (United States)

    Megrant, Anthony; Chen, Z.; Chiaro, B.; Dunsworth, A.; Quintana, C.; Campbell, B.; Barends, R.; Chen, Y.; Fowler, A.; Hoi, I.-C.; Jeffrey, E.; Kelly, J.; Mutus, J.; Neill, C.; O'Malley, P. J. J.; Roushan, P.; Sank, D.; Vainsencher, A.; Wenner, J.; White, T.; Palmstrom, C.; Martinis, J. M.; Cleland, A. N.

    2015-03-01

    Linear arrays of planer Xmon qubit circuits fabricated using thin aluminum films on sapphire substrates have resulted in long coherence times and high fidelity gates. Scaling up to larger circuits, including two-dimensional qubit arrays, may however benefit from building circuits on silicon instead of sapphire substrates. I will present recent tests in this direction, reporting on measurements of superconducting coplanar waveguide resonators fabricated using aluminum films deposited on silicon in a molecular beam epitaxy (MBE) system. These resonators exhibit exceptional performance, with quality factors at low temperatures and single photon excitation energies exceeding 5x106. This research was funded by the Office of the Director of National Intelligence (ODNI), Intelligence Advanced Research Projects Activity (IARPA), through the Army Research Office Grant W911NF-09-1-0375.

  17. La « brutalisation » de la guerre. Des guerres d’Italie aux guerres de Religion

    OpenAIRE

    Jean-Louis Fournel

    2005-01-01

    Jean-Louis Fournel, abordant la période des guerres d’Italie, tente de montrer comment ces nouvelles guerres modifient l’intensité et le rythme de la guerre guerroyée : la conscience d’une violence et d’une rapidité inédites fait planer une menace de mort sur les États eux-mêmes et la question de la guerre est dès lors placée au cœur de la pensée politique. Trois manifestations de ces « nouvelles » guerres marquent particulièrement les contemporains et autorisent l’analyste à évoquer ici une ...

  18. Logistik och just-in-time - En utvärdering av OF Bygg i Umeå.

    OpenAIRE

    Wikner, Per

    2017-01-01

    Denna studie behandlar logistik och materialhantering med fokus på just-in-time-leveranser (JIT). Via intervjuer har data samlats in för att besvara forskningsfrågan; hur arbetar OF med JIT idag och finns det möjligheter till förbättring? Idag använder de inte JIT i någon större utsträckning, men ser en potential i metoden. Det framkom flera eventuella hinder för en renodlad implementering av JIT, främst relaterade till resurser och planering. Resultatet av studien blev att det finns möjlighe...

  19. Studier av radioaktivt cesium i svenska renar. Oversikt over pågående undersokningar 1986

    Directory of Open Access Journals (Sweden)

    Gustaf Åhman

    1986-06-01

    Full Text Available I samband med den forskning och forsöksverksamhet som bedrivits vid renforsöksavdelningen har vi arbetat med metodik och teknik som kan tillämpas vid studier av radioaktivt cesium i renbetesväxter och i renar. På betessidan har vi bl.a. arbetat med kontaminering av tungmetaller från gruvindustrin och nitrat efter kvävegödsling. Omfattande studier har utförts av renens mineralstatus och mineralämnesomsättning. Erfarenheter och kunskaper från dessa områden har utnyttjats for planering och genomförande av de studier som nu pågår beträffande radioaktivt cesium i renbetesväxter och renar.

  20. Wear and cutting performance of diamond composite material-a comparison with tungsten carbide

    Institute of Scientific and Technical Information of China (English)

    LI Xing-sheng; J. N. Boland

    2004-01-01

    A series of wear and rock cutting tests were undertaken to assess the wear and cutting performance of a thermally stable diamond composite (TSDC). The wear tests were conducted on a newly designed wear testing rig in which a rotating aluminium oxide grinding wheel is turned (also known as machined) by the testing tool element.The rock cutting tests were performed on a linear rock-cutting planer. The thrust and cutting forces acting on the tool were measured during these tests. A tungsten carbide element was also studied for comparative purposes. The wear coefficients of both materials were used to evaluate wear performance while cutting performance was assessed by tool wear and the rates of increase in forces with cutting distance.

  1. Wear behaviour of laser surface hardfaced steels with tungsten carbide powder injection

    Energy Technology Data Exchange (ETDEWEB)

    Pantelis, D. (Ecole Centrale Paris, Lab. MSS/MAT, 92 - Chatenay-Malabry (France)); Michaud, H. (IRSID-UNIEUX, Coatings Service, USINOR-SACILOR Group, 42 - Firminy (France)); Freitas, M. de (Inst. Superior Tecnico, CEMUL (INIC), Lisboa (Portugal))

    1993-05-28

    The use of a laser beam for surface alloying with carbide powder injection gives thick coatings (750-800 [mu]m) without defects such as porosity and cracks. A precise correlation between the treatment parameters and the phenomena induced during the laser-material interaction is established. Optimum treatment conditions are found and applied to laser alloying of 4140 and high speed M2 tool steels with tungsten carbide injection. The laser surface treated zones, for both steels, are strongly alloyed and present a very fine microstructure with various morphologies and very high average values of the microhardness (900 HV 50 gf and 1200 HV 50 gf) compared with those of the substrates (300 HV 50 gf and 250 HV 50 gf respectively). Friction and wear tests (using a plane-ring experimental device), revealed that the laser surface coatings on both steels present wear resistances considerably higher than that of a conventional plasma-sprayed coating. (orig.)

  2. Development and molecular modeling of Co(II, Ni(II and Cu(II complexes as high acting anti breast cancer agents

    Directory of Open Access Journals (Sweden)

    S.A. Deodware

    2017-02-01

    Full Text Available A series of cobalt, nickel and copper complexes of bidentate Schiff base derived from the condensation reaction of 4-amino-5-mercapto-3-methyl-1,2,4-triazole with 2-nitrobenzaldehyde had been synthesized. The synthesized Schiff base and their metal complexes have been characterized with the support of more than a few physicochemical techniques, elemental evaluation, magnetic moment measurements, spectroscopic, thermo gravimetric techniques and X-ray powder diffraction. Spectral analysis exhibits square planer geometry for Cu(II complex while octahedral geometry for Co(II and Ni(II complexes. The Schiff base and their complexes have been screened for their anticancer activity using MCF7 cell line. In molecular docking learn exhibits that Ni(II complex is more active confirmed quantity of interaction in particular hydrogen bond interaction with ASN142 and charge interactions with ASP97 and GLU99.

  3. Analysis of spherical thermo-acoustic radiation in gas

    Directory of Open Access Journals (Sweden)

    Hanping Hu

    2012-09-01

    Full Text Available A general solution of the spherical thermo-acoustic (TA radiation from any solid in gas is derived by using a fully thermally-mechanically coupled TA model. Therefore, the characteristics and regularities of spherical TA emission can be studied more completely. It is shown that flat amplitude-frequency response, the most important feature for planar TA emission from technical standpoint, still exists for spherical TA emission, and changes with the radius of a sphere, thickness of TA sample, and the distance from surface. This expression agrees well with experimental and theoretical results of planer TA emission for much larger sphere and lays the foundation to calculate complex TA emission problems.

  4. Study of high speed complex number algorithms. [for determining antenna for field radiation patterns

    Science.gov (United States)

    Heisler, R.

    1981-01-01

    A method of evaluating the radiation integral on the curved surface of a reflecting antenna is presented. A three dimensional Fourier transform approach is used to generate a two dimensional radiation cross-section along a planer cut at any angle phi through the far field pattern. Salient to the method is an algorithm for evaluating a subset of the total three dimensional discrete Fourier transform results. The subset elements are selectively evaluated to yield data along a geometric plane of constant. The algorithm is extremely efficient so that computation of the induced surface currents via the physical optics approximation dominates the computer time required to compute a radiation pattern. Application to paraboloid reflectors with off-focus feeds in presented, but the method is easily extended to offset antenna systems and reflectors of arbitrary shapes. Numerical results were computed for both gain and phase and are compared with other published work.

  5. Time resolved Schlieren imaging of DBD actuator flow fields

    Science.gov (United States)

    Nourgostar, Cyrus; Oksuz, Lutfi; Hershkowitz, Noah

    2009-10-01

    Schlieren imaging methods measure the first derivative of density in the direction of a knife-edge spatial filter. It has been used extensively in aerodynamic research to visualize the structure of flow fields. With a single barrier planer dielectric barrier discharge (DBD) actuator, Schlieren images clearly show the absence of significant vertical air flow normal to the surface, and no more than few millimeters thick induced boundary layer flow. A gated intensified CCD camera along with a Schlieren system can not only visualize the flow field induced by the actuator, but also temporarily resolve the images of the flow and plasma field. Our time resolved images with triangular applied voltage waveforms indicate that several separate discharge regimes occur during positive and negative going half cycles of single and double barrier DBD actuators. Time resolved Schlieren imaging of both single and double barrier DBDs with different applied waveforms, discharge parameters and electrode geometries reveal important information on the induced flow structure.

  6. Mechanisms of collective cell movement lacking a leading or free front edge in vivo.

    Science.gov (United States)

    Uechi, Hiroyuki; Kuranaga, Erina

    2017-08-01

    Collective cell movement is one of the strategies for achieving the complex shapes of tissues and organs. In this process, multiple cells within a group held together by cell-cell adhesion acquire mobility and move together in the same direction. In some well-studied models of collective cell movement, the mobility depends strongly on traction generated at the leading edge by cells located at the front. However, recent advances in live-imaging techniques have led to the discovery of other types of collective cell movement lacking a leading edge or even a free edge at the front, in a diverse array of morphological events, including tubule elongation, epithelial sheet extension, and tissue rotation. We herein review some of the developmental events that are organized by collective cell movement and attempt to elucidate the underlying cellular and molecular mechanisms, which include membrane protrusions, guidance cues, cell intercalation, and planer cell polarity, or chirality pathways.

  7. Crystal structure of O-benzyl-l-tyrosine N-carb-oxy anhydride.

    Science.gov (United States)

    Inada, Aya; Kanazawa, Hitoshi

    2017-04-01

    In the title compound, C17H15NO4 (alternative name; O-benzyl-l-tyrosine N-carb-oxy anhydride), the oxazolidine ring is planer, with an r.m.s. deviation of 0.039 Å. The benz-yloxy and benzyl rings are almost coplanar, making a dihedral angle of 0.078 (10)°, and are inclined to the oxazolidine ring by 59.16 (11) and 58.42 (11)°, respectively. In the crystal, mol-ecules are linked by N-H⋯O and C-H⋯O hydrogen bonds, forming ribbons propagating along [010]. The ribbons are linked by C-H⋯π inter-actions, forming a three-dimensional supra-molecular structure. The oxazolidine rings of adjacent ribbons are arranged into a layer parallel to the ab plane. This arrangement is favourable for the polymerization of the compound in the solid state.

  8. Optimized Solution of Two Bar Truss Design Using Intuitionistic Fuzzy Optimization Technique

    Directory of Open Access Journals (Sweden)

    Samir Dey

    2014-08-01

    Full Text Available The main goal of the structural optimization is to minimize the weight of structure or the vertical deflection of loaded joint while satisfying all design requirements imposed by design codes. In general fuzzy sets are used to analyze the fuzzy structural optimization. In this paper, a planer truss structural model in intuitionistic fuzzy environment has been developed. This paper proposes an intuitionistic fuzzy optimization approach to solve a non-linear programming problem in the context of a structural application. This approximation approach is used to solve structural optimization model with weight as objective function. This intuitionistic fuzzy optimization (IFO approach is illustrated on two-bar truss structural design problem. The result of the intuitionistic fuzzy optimization obtained is compared with the other results of optimization algorithms from the literary sources. It is shown that the proposed intuitionistic fuzzy optimization approach is more efficient than the analogous fuzzy technique for structural design.

  9. Multifunctionality of PV shells; Multifunktionalitaet von PV-Fassaden

    Energy Technology Data Exchange (ETDEWEB)

    Erban, C. [Saint-Gobain Glass Solar, Aachen (Germany)

    2000-08-01

    Integrated PV systems have come a long way since the construciton of the first solar building shell eight years ago. All technical problems have be solved, and a multitude of solar wall elements are now available that enable architects and planners to design their own customised solar building. [German] Der Einsatz von gebaeudeintegrierter Photovoltaik hat in den nunmehr acht Jahren seit dem Bau der ersten Solarfassade erhebliche Fortschritte gemacht. In technischer Hinsicht ist heute nahezu alles moeglich. Der Umsetzung der einstigen Vision 'Jedem Gebaeude seine Solaranlage' steht heute nichts mehr entgegen, zumal zahlreiche Foerdermoeglichkeiten existieren. Die Vielzahl der Einsatz- und Kombinationsmoeglichkeiten von Solar-Fassadenelementen versetzen Planer und Architekten in die Lage, ihrer individuellen Idee einer gebaeudeintegrierten Solaranlage Gestalt zu geben. (orig.)

  10. Innovations in the technical part of the Gas- und Wasserleitungskreuzungsrichtlinien 2012 (GWKR 2012); Neuerungen im technischen Teil der Gas- und Wasserleitungskreuzungsrichtlinien 2012 (GWKR 2012)

    Energy Technology Data Exchange (ETDEWEB)

    Lamprecht, Jochen [RWE Westfalen-Weser-Ems Netzservice GmbH, Dortmund (Germany)

    2013-01-15

    Throughout the course of a year nearly 1,000 crossings between natural gas and water pipelines or wastewater pipelines, respectively, and real properties of the Deutsche Bahn AG (Berlin, Federal Republic of Germany) are planned, built or modified. Existing crossings are operated and maintained with intended use. Thus, the actuality of the legal and technical conditions are of great interest for all participants on the part of grid operators, planers as well as the Deutsche Bahn AG. The contribution under consideration illustrates the significant modifications of the Gas- und Wasserleitungskreuzungsrichtlinie brought into force at 1st April, 2012, in opposite to the hitherto established regulation 2000 (for the Deutsche Bahn established as RII 180.01).

  11. Measurement of $\\beta$-decay end point energy with Planar HPGe detector

    CERN Document Server

    Bhattacharjee, T; Das, S K; Chowdhury, A; Das, P; Banerjee, D; Saha, A; Mukhopadhyay, S; Pal, S; Banerjee, S R

    2014-01-01

    The end point energies of nuclear $\\beta$ decays have been measured with a segmented planar Ge LEPS detector using both singles and coincidence techniques. The $\\beta - \\gamma$ coincidence has been performed with a segmented planar Ge LEPS and a single 10$\\%$ HPGe detector. The $\\gamma$ ray and $\\beta$ particle responses of the Segmented planer Ge LEPS detector were studied using monte carlo simulation code GEANT3. The experimentally obtained $\\beta$ spectrum was in reasonably good agreement with the simulation results. The experimental end point energies are determined with substantial accuracy for some of the known $\\beta$ decays in $^{106}$Rh, $^{210}$Bi and $^{90}$Y. The end point energies corresponding to three weak branches in $^{106}$Rh $\\rightarrow$ $^{106}$Pd decay has been measured for the first time.

  12. Metal Patch Antenna

    Science.gov (United States)

    Chamberlain, Neil F. (Inventor); Hodges, Richard E. (Inventor); Zawadzki, Mark S. (Inventor)

    2012-01-01

    Disclosed herein is a patch antenna comprises a planar conductive patch attached to a ground plane by a support member, and a probe connector in electrical communication with the conductive patch arranged to conduct electromagnetic energy to or from the conductive patch, wherein the conductive patch is disposed essentially parallel to the ground plane and is separated from the ground plane by a spacing distance; wherein the support member comprises a plurality of sides disposed about a central axis oriented perpendicular to the conductive patch and the ground plane; wherein the conductive patch is solely supported above the ground plane by the support member; and wherein the support member provides electrical communication between the planer conductive patch and the ground plane.

  13. Uavrc, a Generic Mav Flight Assistance Software

    Science.gov (United States)

    Israel, M.; Mende, M.; Keim, S.

    2015-08-01

    In this paper we present our multicopter flight assistance software uavRC, which bears on a distributed system with interchangeable MAV-drivers and a browser-based user interface that can be used on any computer, tablet or smartphone. The software components can be distributed on different computers and are even executable on a Raspberry Pi. The components communicate over a well-defined interface. One module is the browser based user interface, another module is the MAV driver. There are additional modules like a task-scheduler, a path-planer and many more. Currently the software is in beta stage, so there is still a lot of work in progress. With this paper we focus on the software architecture.

  14. Investigating the feasibility of using a grit blasting process to coat nitinol stents with hydroxyapatite.

    Science.gov (United States)

    Keady, F; Murphy, B P

    2013-01-01

    This study investigates the feasibility of utilising a grit blasting process to coat three nitinol substrates (a planer 2D surface, a circular wire and a cardiovascular stent geometry) with a hydroxyapatite coating. Surface characteristics of the coating on the three substrates were determined and additionally the durability of the coating post fatigue testing was analysed. The coating process resulted in a consistent covering of the substrate that resulted in an extremely hydrophilic stent surface. The surface roughness was dependant on grit blasting particle size. A general trend of smaller particle size resulted in a lower surface roughness, while particle size did not have an effect on the hydroxyapatite coating thickness. Fatigue integrity tests that simulated 16 months implantation demonstrated minimal damage to the coating. In conclusion we demonstrated the initial feasibility of using a grit blasting method to produce a consistent, hydrophilic, and durable HAp stent coating that has the capability of incorporating a drug eluting function.

  15. Synthesis, characterization and biocidal activities of Schiff base polychelates containing polyurethane links in the main chain

    Science.gov (United States)

    Hasnain, Sumaiya; Nishat, Nahid

    The concept of combining metallo-polymers with urethanes offers a versatile approach for the synthesis of new polymeric materials. Polyurethane containing transition metals was synthesized by the reaction of Schiff base metal complex with toluene 2,4 diisocyanate. The proposed structures were confirmed by elemental analysis, 1H NMR, 13C NMR and FT-IR. The geometry is determined by UV-Visible spectra and magnetic moment measurements, which reveals that the Mn(II), Co(II) and Ni(II) complexes have octahedral geometry while square planer geometry is reported for Cu(II) and tetrahedral for Zn(II) complex. The antimicrobial activities are determined using the agar well diffusion method with Staphylococcus aureus, Escherichia coli, Bacillus subtilis (bacteria), Aspergillus niger, Candida albicans and Aspergillus flavus (yeast). All the polymeric metal complexes show comparatively good biocidal activity, which is further enhanced after polymerization.

  16. 交流异步伺服系统在龙门刨铣磨中的应用%Application of AC asynchronous servo system in grinding-milling-planing

    Institute of Scientific and Technical Information of China (English)

    张莉军; 杜宏祺

    2012-01-01

    Using time servo control system for AC induction electric planer system technology upgrade, the use of the system within the integrated PLC, pulse, encoders, digital I/O, analog I/O, communications and other interface functions, without the configuration of PC to achieve closed-loop control. In the planer on the basis of a simplified mechanical structure to achieve a grinding-milling-planing integrated. Electronic hand wheel is applied to the non-CNC machine tool feed control, to achieve precision aligning cutter during milling and grinding. Applying specific servo position control system to achieve change without switching to improve system reliability and performance of non-NC machine tools.%使用时光交流异步伺服控制系统对龙门刨电气系统进行技术升级,利用系统内部集成的PLC、脉冲、编码器、数字I/0、模拟I/O、通讯等接口功能,不需配置上位机,实现闭环控制.在对龙门刨机械结构简化的基础上,实现了刨铣磨一体.并将电子手轮应用到非数控机床的进给控制中,达到了铣、磨加工时精确对刀的要求.应用伺服系统特有的位置控制方式,实现了无开关换向,提高了系统的可靠性和非数控机床的操控性能.

  17. Women in landscape architecture and heritage conservation

    Science.gov (United States)

    Bostenaru-Dan, Maria; Theodoridou, Magda; Hayashi, Mikiko; Anghelache, Mirela Adriana

    2017-04-01

    This contribution present research done by Marie Curie fellows in Italy. The first author investigated early landscape architecture in Italy, by Italian and by mobile Romanian landscape planers. The very first one was princess Jeanne Ghyca, who did the parterre d'eau at villa Gamberaia by Florence. This villa influenced the landscape architecture of Italy such as Piero Porcinai or Marie Teresa Parpagliolo. Maria Teresa Parpagliolo is the next name to deal as, since she designed the landscape of the EUR (Esposizione Universale Roma), in a time when Mussolini denied the contribution of women. Water characterises also this planning, with an aquarium being built currently under the lake. Maria Teresa Parpagliolo also worked with Elena Luzzatto, the first women architect in Italy, at the design of the military cemetery in Rome. This work will also be presented. Elena Luzzatto contributed to other Roman cemeteries as well, designing funerary stones for Verano and the cemetery at Prima Porta which will be presented. The work on cemeteries will be put in context of Rome (acatholic cemetery for example) and Italy (Carlo Scarpa, Aldo Rossi contributions). The investigation on the role of women will be compared to other programmes dealing with, for example the COST network genderSTE dealing with cities and climate change which are relevant for landscape, and MOMOWO, a European culture project on early woman planers. The next two authors did research on conservation issues, through the network EPISCON, and this is resulting in role models for the GEMS booklet and the Romanian role models booklet. The fourth author also was a Marie Curie fellow in Italy, at the ROSE school in Pavia, doing research on earthquake mitigation along with the first author's Marie Curie stay. The story will also be promoted in the Marie Curie Alumni chapter Romania.

  18. Experimental Technique of Two-Stage Electric Gun%二级电炮加载技术研究

    Institute of Scientific and Technical Information of China (English)

    罗斌强; 赵剑衡; 孙承纬; 莫建军; 贺佳; 张兴卫; 王桂吉; 谭福利

    2012-01-01

    利用常规电炮发射金属飞片的实验技术,将Ф10mm×0.5mm、Ф10mm×0.3mm铝飞片分别发射到300、500m/s的速度且具有较好的平面度,有效拓展了电炮在相对较低的飞片发射速度和较低应变率下的加载能力(飞片速度约100m/s、应变率小于106 s-1),使之可以在更宽的应变率和加载压力下使用。利用二级电炮技术,对Zr51Ti5Ni10Cu25Al9块体非晶合金进行了平面撞击实验,获得了较好的结果,该工作对电炮加载技术的推广应用有着重要的作用。%A newly designed configuration based on an electric gun (namely two-stage electric gun) was used to launch metallic flyer,and dimension ofФ510 mm×0.5 mm,Ф510 mm×0.3 mm aluminum flyers can be accelerated to 300 m/s and 500 m/s, respectively. Using the two stage electric gun, dynamic response of Zr-based amorphous alloy was investigated under planar impact and good results were obtained. This work extended the capability of electric gun to contain wider range of planer flyer velocity(0. 1-10 km/s) and loading strain rates(10s-106 s Z),and it may be helpful to planer-impact experiments.

  19. Radioactive contamination of the environment as a result of uranium production: a case study at the abandoned Lincang uranium mine, Yunnan Province, China

    Institute of Scientific and Technical Information of China (English)

    XU; Lechang(

    2002-01-01

    [1]Gillmore, G. K., Grattan, J., Pyatt, F. B. et al., Radon, water and abandoned metalliferous mines in the UK: Environmental and Human Health Implications, in Uranium in the Aquatic Environment, Proceedings of the International Conference Uranium Mining and Hydrogeology III and the International Mine Water Association Symposium (eds. Merkel, B. J., Planer-Friedrich, B., Wolkersdorfer, C.), Berlin: Springer, 2002, 65-76.[2]GB/T 16146-1995, Standards for Controlling Radon Concentration in Dwellings (in Chinese).[3]Kinze, M., Dose limits and maximum concentration limits (MCL's) for radionuclides--Implication on remediation of uranium mining and milling facilities in Saxony Germany, in Uranium in the Aquatic Environment, Proceedings of the International Conference Uranium Mining and Hydrogeology III and the International Mine Water Association Symposium (eds. Merkel, B. J., Planer-Friedrich, B., Wolkersdorfer, C.), Berlin: Springer, 2002, 1-7.[4]Xu, L. C., Wang, Y. X., Environmental issues and remedial actions of the abandoned Lincang uranium mine in China, in Uranium in the Aquatic Environment, Proceedings of the International Conference Uranium Mining and Hydrogeology III and the International Mine Water Association Symposium (eds. Merkel, B. J., Planer-Friedrich, B., Wolkersdorfer, C.), Berlin: Springer, 2002, 709-718.[5]International Atomic Energy Agency, Decommissioning of Facilities for Mining and Milling of Radioactive Ores and Closeout of Residues, Technical Report Series No. 362, Vienna: IAEA, 1994, 70.[6]OECD/NEA (Nuclear Energy Agency), Environment Activities in Uranium Mining and Milling, A Joint NEA/IAEA Report, Paris: Pubie en Francais Sous le Titre, 1999, 23-26.[7]Xu, L. C., Dai, X., Tan, T. et al., Environment Impact Report on Environmental Treatment Engineering of Decommissioning Lincang Uranium Mine (Feasibility studies stages) ( in Chinese), 1999.[8]Zhang Zhihui, Measurement Methods of Radon and Its Daughters in

  20. Stem cell harvesting protocol research in autologous transplantation setting: Large volume vs. conventional cytapheresis

    Directory of Open Access Journals (Sweden)

    Balint Bela

    2008-01-01

    Full Text Available Background/Aim. The use of peripheral blood as a source of hematopoietic stem cells (SCs is progressively increasing and has nearly supplanted bone marrow transplantation. Interpatient variability in the degree and kinetics of SC mobilization into peripheral blood is an expected event after conventional chemotherapy-based treatment, followed by sequential administration of recombinant granulocyte-colony- stimulating factor (rHu-CSF. In this study, specific factors associated with the application of two different SC-harvesting approaches, including the use of large volume leukapheresis (LVL vs. repetitive conventional apheresis (RCA, were analyzed. The basic goal of the study was to evaluate the influence of apheresis protocol (collection timing, processed blood volume and cell yield upon the clinical outcome of transplantation. Methods. Results obtained by LVL (76 pts and RCA (20 pts - control group were compared. The SC mobilizing regimen used was cyclophosphamide (4-7 g/m2 or polychemotherapy and rHuG-CSF 10-16 μg/kg of body mess (bm per day. Cell harvesting was performed using COBE-Spectra (Caridian-BCT, USA. The volume of processed blood in LVL setting was ≥ 3.5 - fold of the patient's circulating blood quantity (ranged from 12.7 to 37.8 l. All patients tolerated well the use of intensive treatment, without any side or adverse effects. Our original controlled-rate cryopreservation was carried out with 10% dimethyl sulfoxide (DMSO using Planer R203/200R or Planer 560-16 equipments (Planer Products Ltd, UK. Total nucleated cell (NC and mononuclear cell (MNC counts were examined by flow cytometry (Advia-2120 Bayer, Germany; Technicon H-3 System, USA. The CD34+ cell surface antigen was investigated by the EPICS XL-MCL device (Coulter, Germany. Results. Performing LVL-apheresis, high-level MNC and CD34+ cell yields (7.6±4.6 × 108/kg bm and 11.8±6.5 × 106/kg bm, respectively were obtained. As a result, rapid hematopoietic reconstitution

  1. Aquarius - A Modelling Package for Groundwater Flow and Coupled Heat Transport in the Range 0.1 to 100 MPa and 0.1 to 1000 C

    Science.gov (United States)

    Cook, S. J.

    2009-05-01

    Aquarius is a Windows application that models fluid flow and heat transport under conditions in which fluid buoyancy can significantly impact patterns and magnitudes of fluid flow. The package is designed as a visualization tool through which users can examine flow systems in environments, both low temperature aquifers and regions with elevated PT regimes such as deep sedimentary basins, hydrothermal systems, and contact thermal aureoles. The package includes 4 components: (1) A finite-element mesh generator/assembler capable of representing complex geologic structures. Left-hand, right-hand and alternating linear triangles can be mixed within the mesh. Planer horizontal, planer vertical and cylindrical vertical coordinate sections are supported. (2) A menu-selectable system for setting properties and boundary/initial conditions. The design retains mathematical terminology for all input parameters such as scalars (e.g., porosity), tensors (e.g., permeability), and boundary/initial conditions (e.g., fixed potential). This makes the package an effective instructional aide by linking model requirements with the underlying mathematical concepts of partial differential equations and the solution logic of boundary/initial value problems. (3) Solution algorithms for steady-state and time-transient fluid flow/heat transport problems. For all models, the nonlinear global matrix equations are solved sequentially using over-relaxation techniques. Matrix storage design allows for large (e.g., 20000) element models to run efficiently on a typical PC. (4) A plotting system that supports contouring nodal data (e.g., head), vector plots for flux data (e.g., specific discharge), and colour gradient plots for elemental data (e.g., porosity), water properties (e.g., density), and performance measures (e.g., Peclet numbers). Display graphics can be printed or saved in standard graphic formats (e.g., jpeg). This package was developed from procedural codes in C written originally to

  2. Progress in photonic transport network systems

    Science.gov (United States)

    Sato, Ken-Ichi

    2002-07-01

    The network paradigm is changing rapidly spurred by the dramatic increase in IP traffic and recent progress in photonic network technologies. A key requirement, enhancing the performance of existing IP-based multimedia communication networks, can be most effectively achieved by introducing optical path technologies that exploit wavelength routing. Cost effective and reliable optical cross-connection is essential. Different optical switch technologies have been proposed and tested. Among them, the PLC (Planer Lightwave Circuit) switch has demonstrated excellent performance, particularly with regard to system reliability. Network control mechanisms based on the overlay and peer model models have been developed. The presentation will highlight some of the key system technologies. To develop very large scale and robust networks, effective traffic engineering capabilities are necessary. This will be achieved through optical path control. To develop future IP-centric networks, an operation mechanism based on distributed control is important. The degree to which the necessary transport and IP routing functions are integrated will determine system cost-effectiveness. The Photonic MPLS (Multi Protocol Label Switching) router, which integrates all the functions and provides seamless operation between IP and optical layers, has been proposed and developed. The technical feasibility of a recent prototype system has been proven. Finally, some of the cutting-edge photonic transport technologies that we have recently developed are demonstrated; these technologies will enable us to achieve another level of network performance enhancement in the future.

  3. The Regional Court of Bielefeld limits the maximum office room temperature to 26 C. Documentation of the evolution and legal basis of recent case law on indoor climate in the context of the German Workplace Ordinance and workplace standards; Das Bielefelder Klimaurteil fordert maximal 26 C in Bueros. Eine Dokumentation zur Entwicklung und Begruendung der neuen Klima-Rechtsprechung im Kontext der Arbeitsstaettenverordnung und Arbeitsstaettenrichtlinien sowie dessen Folgen fuer die TGA-, Bau- und Immobilienwirtschaft

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2003-11-01

    This exhaustive documentation presents background information and discusses the reasons underlying the ruling of the Bielefeld Regional Court, on indoor climate and thermal comfort at the place of work. The labor law dimensions of this ruling are highlighted in the context of the German workplace ordinance, (ArbStaettenV), technical standards laid down in the accompanying regulations, (ASR), the resulting rights of employees (health aspects), and the implications for architects, air conditioning system vendors, the building industry and primary contractors, and real estate management companies (compliance aspects and civil liability). Additional information, such as anonymized copies of earlier rulings of various other regional courts on the same topic, newspaper clippings and statements of lawyers, underlines the significance of this ruling. (orig./CB) [German] Diese sehr umfangreiche Dokumentation befasst sich mit den Hintergruenden und der Entwicklung des 'Bielefelder Klimaurteils', dessen arbeitsrechtlichen Dimensionen im Kontext der bestehenden Arbeitsstaettenverordnung (ASV) und der Arbeitsstaettenrichtlinien und den dadurch entstehenden Rechtsanspruechen der Arbeitnehmer, (gesundheitliche Aspekte), sowie den Konsequenzen (u.a. Haftung) fuer Architekten, Planer, Anlagenbauer, Generalunternehmer, Bauunternehmer und die Immobilienwirtschaft. Anonymisierte Kopien von Gerichtsurteilen aus der Vergangenheit zum Thema Raumklima am Arbeitsplatz, Zeitungsausschnitte und Einschaetzungen von Rechtsanwaelten bieten einen guten Ueberblick ueber die Entwicklungsschritte in der Rechtsprechung und die Bedeutung dieses Gerichtsurteils. (orig./CB)

  4. Improved silica-PLC Mach-Zehnder interferometer type optical switches with error dependence compensation of directional coupler

    Science.gov (United States)

    Wang, Jun; Yi, Jia; Guo, Lijun; Liu, Peng; Hall, Trevor J.; Sun, DeGui

    2017-03-01

    For the most popular structure of planer lightwave circuit (PLC) 2×2 thermo-optic switches, Mach-Zehnder interferometer (MZI), a full range of splitting ratio errors of directional coupler (DC) are investigated. All the parameters determining the splitting ratio are the dimensions and the refractive indices of the waveguide core and cladding layers. In this work, the coherent relationships between the waveguide size and the refractive indices are analyzed and then the error compensation between the width and the refractive index of waveguide core, and the controllable effect of over clad layer refractive index error upon the MZI-type optical switch are all discovered with numerical calculation and BPM simulations. Then, an MZI-type 2×2 thermo-optic switch having a higher error tolerance is established with the efficient optimizations of all the 3 dB-DC parameters. As a result, for the symmetric MZI switch, an insertion loss of 1.5 dB and optical extinction ratio of over 20 dB are realized for the average tolerance of±5.0%. An asymmetric arm optical phase and unequal arm lengths is also employed to improve the uniformities of insertion loss. The agreements between the designs and the experiments are recognized, leading to a wide adoption of practical silica-PLC optical switch products.

  5. The magnetic properties of antiferromagnetic nanoparticles: NiO and -Fe2O3

    DEFF Research Database (Denmark)

    Bahl, Christian Robert Haffenden

    2006-01-01

    Nikkel oxid (NiO) og hematit -Fe2O3) er begge antiferromagneter med magnetiske egenskaber på nanoskala, som er forskellige fra dem i større krystaller. Med hovedvægt på nanopartikler af NiO og sammenligninger med nanopartikler af hematit studeres disse magnetiske egenskaber med en række...... egenskaber. Nanopartiklerne af NiO vises at være pladeformede med (111) planer som flader, en tykkelse på omkring 2.3 nm og en diameter på omkring 13 nm. Den magnetiske struktur er magen til den i større krystaller, med spinene holdt i (111) planerne. Målinger af spindynamikken afslører en værdi af den...... morter med hånden. Nanopartikler af antiferromagnetiske materialer vil have et ukompenseret magnetisk moment, der opstår ved endelige partikelstørrelser på grund af overskydende spin på det ene undergitter. Dette ukompenserede moment kvantiseres i NiO nanopartiklerne og findes at være uafhængigt af...

  6. L E E guide on electric power supply in high rise buildings. tot. rev. ed.; L E E. Leitfaden Elektrische Energie im Hochbau

    Energy Technology Data Exchange (ETDEWEB)

    Hennings, D.; Hinz, E.; Steinmueller, B.; Grossklos, M.

    2000-07-01

    Energy policy aiming at sustainability must take account of the noxious effects of fossil fuels. This guide will help to solve this problem. It is an easy to handle tool for integral planning and optimisation of electric power supply in administrative and office buildings, with a standard projecting procedure, a method for improving electric systems in buildings on the basis of characteristic values, and hints for planning and optimisation. It addresses builder owners and investors as well as architects, planners, engineers and energy consultants all of whom may be concerned in the planning of a building and its technical facilities. [German] Eine am Ziel der Nachhaltigkeit orientierte Energiepolitik muss Konsequenzen draus ziehen, dass der Einsatz der fossilen Energietraeger, auf denen unsere Energieversorgung bisher basiert, mit schaedlichen Umweltauswirkungen verbunden ist. Kohlendioxid und andere klimarelevante Spurengase heizen die Erdatmosphaere auf und drohen zur Klimakatastrophe zu fuehren; Stickoxid und Schwefeldioxid belasten mit dem sauren Regen Boden, Gewaesser und ganze Oekosysteme. Der vorliegende Leitfaden 'Elektrische Energie im Hochbau' will hier Abhilfe schaffen. Er stellt ein gut zu handhabendes Werkzeug dar, mit dessen Hilfe eine integrale Planung und Optimierung des rationellen Einsatzes elektrischer Energie in Dienstleistungsgebaeuden moeglich ist. Inhalte des Leitfadens sind die Darstellung des Planungsablaufs, ein Kennwertverfahren zur Verwertung und Verbesserung von elektrischen Anwendungen im Gebaeudebereich als Massnahme zur Investitions- und Betriebskostenreduzierung sowie Hinweise fuer Planung und Optimierung. Der Leitfaden richtet sich sowohl an die Bauherren bzw. Investoren als auch die an der Gebaeude- und Technikplanung Beteiligten, also die Architekten, Planer, Ingenieure und Energieberater. (orig.)

  7. Ramp-wave compression experiment with direct laser illumination on Shen Guang III prototype Laser facility

    Science.gov (United States)

    Wang, Feng; Xu, Tao; Optical Team Collaboration

    2016-10-01

    Ramp-wave compression (RWC) experiment to balance the high compression pressure generation in aluminum and x-ray blanking effect in transparent window was demonstrated on Shen Guang-III prototype laser facility. A new target concept was proposed to develop a laser-driven shocks-RWC technique for studying material behavior under dynamic, high pressure conditions. As the ``little shocks'' in our experiment cannot be avoided, the effort to diminish the shock under a special level has been demonstrated with Al/Au/Al/LiF target. The highest pressure is about 500GPa after using the multilayer target design Al/Au/Al/LiF and about 1013W/cm2 laser pulse incident on the planer Al target, instantaneously affecting ablation layer located 500 μm away. As the x-ray generated by Al layer had been prevented by the Au layer, the width abrupt onset of strong absorption of an optical probe beam (λ = 532 nm) in LiF window may be the limitation for this kind if RWC experiment during the experiment time scale for 30 μm thick step. With the design laser shape and target structure of Al/Au/Al/LiF, 500GPa may be the highest pressure after balance the preheat effect and ablation efficiency for laser direct-drive experiment.

  8. Daylight in buildings. Investigation and optimisation of external walls with side windows for daylighting of deep rooms and rooms with daylight-dependent artificial lighting; Tageslichtnuzung in Gebaeuden. Untersuchung und Optimierung von Gebaeudefassaden zur Tageslichtbeleuchtung grosser Gebaeudetiefen mit Seitenfenstern und Raeumen mit tageslichtabhaengiger Kunstlichtkontrolle

    Energy Technology Data Exchange (ETDEWEB)

    Kaase, H.; Aydinli, S.; Jakobiak, A.; Knoop, T.; Ehling, K.; Belendorf, H.; Sit, A.

    2001-07-01

    The project intended to provide scientific and technical fundamentals for room lighting with daylight. Daylight deflection systems and artificial light control systems were analyzed for this purpose, and a catalogue of criteria was established. Planners were given tools for projecting daylight control systems. Builder-owners received the fundamentals for economic assessment of combined daylight and artificial light illumination systems, while industrial producers obtained information for further development to maturity and for marketing of daylight-dependent artificial light control systems. [German] Ziel des Vorhabens war es, durch Zusammenarbeit von Lichttechnikern, Architekten und Konstrukteuren, eine anwendungsgerechte Untersuchung und Weiterentwicklung von Tageslichtlenksystemen in Verbindung mit tageslichtabhaengiger Kontrolle kuenstlicher Beleuchtung durchzufuehren, und gesicherte wissenschaftlich-technische Grundlagen fuer die Innenraumbeleuchtung mit Systemen der Tageslichtlenkung zu schaffen. Dabei waren Tageslichtlenksysteme und Kunstlichkontrollsysteme zu bewerten und weiterzuentwickeln, sowie deren Guetemerkmale herauszuarbeiten: - Fuer den Planer sind Unterlagen erstellt worden, mit deren Hilfe Tageslichtlenksysteme geplant, und deren Wirkungsweise zutreffend vorausgesagt werden koennen. - Fuer den Bauherren sind Grundlagen zur Beurteilung der Wirtschaftlichkeit von Tageslichtenksystemen in Verbindung mit Kunstlichtsystemen erarbeitet worden. - Der Industrie werden Hinweise fuer die Weiterentwicklung zur Produktreife und zur Vermarktung von Tageslicht- und tageslichtabhaengigen Kunstlichtkontrollsystemen gegeben. (orig.)

  9. Transparent thermal insulation. Products, projects, planning aids; Transparente Waermedaemmung (TWD). Produkte, Projekte, Planungshinweise

    Energy Technology Data Exchange (ETDEWEB)

    Kerschberger, A. [R und K Forschung, Planung, Beratung, Projektsteuerung, Stuttgart (Germany); Platzer, W. [Fraunhofer-Institut fuer Solare Energiesysteme (ISE), Freiburg im Breisgau (Germany); Weidlich, B. [Assmann Beraten und Planen GmbH, Dortmund (Germany)

    1998-12-31

    After a fundamental introduction on transparent thermal insulation engineering 25 projects are presented by illustration and text in detail and connection between architecture, energy concepts and construction are shown. An overview about materials, products and systems of transparent insulation with reference numbers gives readers important hints for planning and construction. Supplementary components like daylighting and shadowing, positive environmental influences and economics of thermal insulation fassades are further topics in some chapters. Hints on planning and construction, a cheklist to assess the qualification of this materials, as an adress part and a listing of sponsor possibilities are further important aids to enable planners a useful application of this futural technology.(GL) [Deutsch] Nach einer grundsaetzlichen Einfuehrung in die Technik der transparenten Waermedaemmung werden 25 Projekte in Wort und Bild ausfuehrlich vorgestellt und die Zusammenhaenge zwischen Architektur, Energiekonzepten und Konstruktion aufgezeigt. Eine Uebersicht ueber TWD-Materialien, -Produkte und -Systeme mit Kenndaten gibt dem Leser wichtige Planungs- und Bauhinweise. Ergaenzende Komponenten wie Tageslichtnutzung und Verschattung, die positiven Umweltauswirkungen und die Wirtschaftlichkeit von TWD-Fassaden sind Gegenstaende weiterer Kapitel. Hinweise fuer die Planungs- und Baupraxis, eine Checkliste zur Beurteilung der TWD-Eignung eines Bauvorhabens, ein Adressenteil und eine Auflistung von Foerdermoeglichkeiten sind weitere wichtige Hilfen, die dem Planer die sinnvolle Anwendung dieser Zukunftstechnologie ermoeglichen. (orig./GL)

  10. Das Re-entry von Kritik: Assemblageforschung nach der Kritik an der Kritik. Kommentar zu Alexa Färbers „Potenziale freisetzen“

    Directory of Open Access Journals (Sweden)

    Hanna Göbel

    2014-05-01

    Full Text Available Der Kommentar zum Beitrag von Alexa Färber diskutiert eine Vermengung von drei unterschiedlichen Kritikbegriffen sowie Orten von Kritik in der aktuellen Debatte um die Assemblageforschung im Feld der Urban Studies. Ich rekonstruiere und unterscheide zwischen einem Kritikbegriff als theoretischer Norm, wie er von der (neo-marxistischen Stadt- und Raumforschung vertreten wird, und der ontologischen Kritik dieser Norm seitens der Assemblageforscher_innen. Alexa Färbers Beitrag zeigt drittens exemplarisch eine sich einschleichende normative Ebene in der Assemblageforschung auf, die bislang als Kritikform unterbelichtet geblieben ist. Diese wird als Wiedereinführung (re-entry von empirisch vollzogener Kritik in die Assemblageforschung bezeichnet. Damit ist eine theoretische Neupositionierung von Kritik ‚innerhalb’ einer Assemblage gemeint, indem Kritik nicht mehr als theoretische Norm ‚außerhalb’ zu verorten ist. In diesem Kommentar plädiere ich dafür, in der Assemblageforschung eine differenzierte Auseinandersetzung mit unterschiedlichen Begriffen und Orten von Kritik zu pflegen, um innerhalb der Urban Studies und für interessierte städtische Akteure mit urbaner Expertise (u.a. Architekt_innen, Planer_innen, Künstler_innen, Aktivist_innen, Kultur- und Sozialarbeiter_innen, DIY-Gemeinschaften klarer adressierbar zu sein.

  11. Creation of individual ideally shaped stents using multi-slice CT: in vitro results from the semi-automatic virtual stent (SAVS) designer.

    Science.gov (United States)

    Hyodoh, Hideki; Katagiri, Yoshimi; Sakai, Toyohiko; Hyodoh, Kazusa; Akiba, Hidenari; Hareyama, Masato

    2005-08-01

    To plan stent-grafting for thoracic aortic aneurysm with complicated morphology, we created a virtual stent-grafting program [Semi Automatic Virtual Stent (SAVS) designer] using three-dimensional CT data. The usefulness of the SAVS designer was evaluated by measurement of transformed anatomical and straight stents. Curved model images (source, multi-planer reconstruction and volume rendering) were created, and a hollow virtual stent was produced by the SAVS designer. A straight Nitinol stent was transformed to match the curved configuration of the virtual stent. The accuracy of the anatomical stent was evaluated by experimental strain phantom studies in comparison with the straight stent. Mean separation length was 0 mm in the anatomical stent [22 mm outer diameter (OD)] and 5 mm in the straight stent (22 mm OD). The straight stent strain voltage was four times that of the anatomical stent at the stent end. The anatomical stent is useful because it fits the curved structure of the aorta and reduces the strain force compared to the straight stent. The SAVS designer can help to design and produce the anatomical stent.

  12. Sing English: Om sangens potensial i engelskopplæringen

    Directory of Open Access Journals (Sweden)

    Ragnhild Elisabeth Lund

    2012-03-01

    Full Text Available Sang er en åpenbar kilde til læring av fremmedspråk. Læreplaner for engelskfaget opp gjennom tidene har påpekt dette, og læreverkene i engelsk inneholder mange sanger. Men nøyaktig hva er det sang kan bidra med? Hva slags sanger er tatt med i bøkene, og hvilke målsettinger ser ut til å være knyttet til dem? Artikkelen besvarer disse spørsmålene ved å vise til læreplaner og utvalgte lærebøker fra perioden 1885 – 2008 og hvordan de legger opp til at sang skal brukes som en del av opplæringen i engelsk. Undersøkelsen er begrenset til ungdomstrinnet. Innledningsvis refererer artikkelen til ulike begrunnelser for bruk av sang i fremmedspråkopplæringen. Når sang nevnes i læreplanene eller innlemmes i lærebøkene, reflekteres enkelte av disse begrunnelsene. Samtidig er det påfallende hvor ofte planer og bøker ikke begrunner bruken av sang eller setter sangene inn i en didaktisk sammenheng. Artikkelen konkluderer derfor med at sanger ser ut til å representere et stort, men delvis uutnyttet potensial i engelskopplæringen på ungdomstrinnet.

  13. On-Chip Supercapacitor Electrode Based On Polypyrrole Deposited Into Nanoporous Au Scaffold

    Science.gov (United States)

    Lu, P.; Ohlckers, P.; Chen, X. Y.

    2016-11-01

    On-chip supercapacitors hold the potential promise for serving as the energy storage units in integrated circuit system, due to their much higher energy density in comparison with conventional dielectric capacitors, high power density and long-term cycling stability. In this study, nanoporous Au (NP-Au) film on-chip was employed as the electrode scaffold to help increase the electrolyte-accessible area for active material. Pseudo-capacitive polypyrrole (PPY) with high theoretical capacitance was deposited into the NP-Au scaffold, to construct the tailored NP-Au/PPY hybrid on-chip electrode with improved areal capacitance. Half cell test in three- electrode system revealed the improved capacitor performance of nanoporous Au supported PPY electrode, compared to the densely packed PPY nanowire film electrode on planer Au substrate (Au/PPY). The areal capacitance of 37 mF/cm2∼10 mV/s, 32 mF/cm2∼50 mV/s, 28 mF/cm2∼100 mV/s, 16 mF/cm2∼500 mV/s, were offered by NP-Au/PPY. Also, the cycling performance was enhanced via using NP-Au scaffold. The developed NP-Au/PPY on-chip electrode demonstrated herein paves a feasible pathway to employ dealloying derived porous metal as the scaffold for improving both the energy density and cycling performance for supercapacitor electrodes.

  14. Morphological Properties of z~0.5 Absorption-Selected Galaxies: The Role of Galaxy Inclination

    CERN Document Server

    Kacprzak, G G; Evans, Jessica L; Murphy, M T; Steidel, Charles C

    2011-01-01

    We have used GIM2D to quantify the morphological properties of 40 intermediate redshift MgII absorption-selected galaxies (0.03planer geometry, not necessarily disk-like, that is coupled to the galaxy inclination. It...

  15. Coordinating robot motion, sensing, and control in plans. LDRD project final report

    Energy Technology Data Exchange (ETDEWEB)

    Xavier, P.G.; Brown, R.G.; Watterberg, P.A. [Sandia National Labs., Albuquerque, NM (United States). Intelligent Systems and Robotics Center

    1997-08-01

    The goal of this project was to develop a framework for robotic planning and execution that provides a continuum of adaptability with respect to model incompleteness, model error, and sensing error. For example, dividing robot motion into gross-motion planning, fine-motion planning, and sensor-augmented control had yielded productive research and solutions to individual problems. Unfortunately, these techniques could only be combined by hand with ad hoc methods and were restricted to systems where all kinematics are completely modeled in planning. The original intent was to develop methods for understanding and autonomously synthesizing plans that coordinate motion, sensing, and control. The project considered this problem from several perspectives. Results included (1) theoretical methods to combine and extend gross-motion and fine-motion planning; (2) preliminary work in flexible-object manipulation and an implementable algorithm for planning shortest paths through obstacles for the free-end of an anchored cable; (3) development and implementation of a fast swept-body distance algorithm; and (4) integration of Sandia`s C-Space Toolkit geometry engine and SANDROS motion planer and improvements, which yielded a system practical for everyday motion planning, with path-segment planning at interactive speeds. Results (3) and (4) have either led to follow-on work or are being used in current projects, and they believe that (2) will eventually be also.

  16. Effective use of pre-job briefing as tool for the prevention of human error; Effektive Nutzung der Arbeitsvorbesprechung als Werkzeug zur Vermeidung von Fehlhandlungen

    Energy Technology Data Exchange (ETDEWEB)

    Schlump, Ansgar [KLE GmbH, Lingen (Germany). Kernkraftwerk Emsland

    2015-06-15

    There is a fundamental demand to minimise the risks for workers and facilities while executing maintenance work. To ensure that facilities are secure and reliable, any deviation from normal operation behaviour has to be avoided. Accurate planning is the basis for minimising mistakes and making work more secure. All workers involved should understand how the work should be done and what is expected to avoid human errors. Especially in nuclear power plants, the human performance tools (HPT) have proved to be an effective instrument to minimise human errors. These human performance tools consist of numerous different tools that complement each other (e.g. pre-job briefing). The safety culture of the plants is also characterised by these tools. The choice of using the right HP-Tool is often a difficult task for the work planer. On the one hand, he wants to avoid mistakes during the execution of work but on the other hand he does not want to irritate the workers with unnecessary requirements. The proposed concept uses a simple risk analysis to take into account the complexity of the task, the experience of the past and the consequences of failure in to account. One main result of this risk analysis is a recommendation of the detailing of the pre-job briefing, to reduce the risks for the involved staff to a minimum.

  17. Comparison of Fast Neutron Detector Technologies

    Energy Technology Data Exchange (ETDEWEB)

    Stange, Sy [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Mckigney, Edward Allen [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2015-02-09

    This report documents the work performed for the Department of Homeland Security Domestic Nuclear Detection O ce as the project Fast Neutron Detection Evaluation under contract HSHQDC-14-X-00022. This study was performed as a follow-on to the project Study of Fast Neutron Signatures and Measurement Techniques for SNM Detection - DNDO CFP11-100 STA-01. That work compared various detector technologies in a portal monitor con guration, focusing on a comparison between a number of fast neutron detection techniques and two standard thermal neutron detection technologies. The conclusions of the earlier work are contained in the report Comparison of Fast Neutron Detector Technologies. This work is designed to address questions raised about assumptions underlying the models built for the earlier project. To that end, liquid scintillators of two di erent sizes{ one a commercial, o -the-shelf (COTS) model of standard dimensions and the other a large, planer module{were characterized at Los Alamos National Laboratory. The results of those measurements were combined with the results of the earlier models to gain a more complete picture of the performance of liquid scintillator as a portal monitor technology.

  18. Multifunctional facades - design optimisation with CAD; Multifunktionale Fassaden - Effektive Auslegung durch CAD-Einsatz

    Energy Technology Data Exchange (ETDEWEB)

    Viotto, M. [Institut fuer Solare Energieversorgungstechnik (ISET), Kassel (Germany). Abt. fuer Anlagen- und Messtechnik

    1998-02-01

    The energetically optimal design of PV facades requires the consideration of many technical conditions (different elevations/orientations of modules; shading possibility; high and different module temperatures). It also requires the interface with architecture, civil and electrical engineering. To support this planning process, the software program PV-CAD was developed which rapidly calculates energy yield under conditions of inhomogeneous irradiance, shading, thermal behaviour of modules and electrical layout. PV-CAD is compatible with other civil and electrical engineering CAD programs and incorporates extensive databases (weather data; modules and inverter types). (orig.) [Deutsch] Fuer optimalen Energieertrag sind zahlreiche technische Randbedingungen bei der Auslegung einer Photovoltaik (PV)-Fassade zu beruecksichtigen (unterschiedliche Ausrichtungen/Neigungen der Module; moegliche Teilabschattung; hoehere und unterschiedliche Betriebstemperaturen). Installation und Betrieb einer PV-Fassade erfordern die Abstimmung zwischen Architektur, Bauwesen und Elektrotechnik. Zur Unterstuetzung der Planer wurde das Programm PV-CAD entwickelt, das den Energieertrag unter Beruecksichtigung von inhomogener Einstrahlung und Abschattung, Temperaturverhalten der Fassadenmodule sowie unterschiedlichen elektrischen Anlagenkonzepten schnell ermittelt; es fuegt sich nahtlos in CAD-Arbeitsumgebungen ein. (orig.)

  19. Characterization of residues from plant biomass for use in energy generation

    Directory of Open Access Journals (Sweden)

    Luana Elis de Ramos e Paula

    2011-06-01

    Full Text Available The use of plant residues for energy purposes is already a reality, yet in order to ensure suitability and recommend a given material as being a good energy generator, it is necessary to characterize the material through chemical analysis and determine its calorific value. This research aimed to analyze different residues from plant biomass, characterizing them as potential sources for energy production. For the accomplishment of this study, the following residues were used: wood processing residue (sawdust and planer shavings; coffee bean parchment and coffee plant stem; bean stem and pod; soybean stem and pod; rice husk; corn leaf, stem, straw and cob; and sugar cane straw and bagasse. For residue characterization the following analyses were done: chemical analysis, immediate chemical analysis, calorific value and elemental analysis. All procedures were conducted at the Laboratory of Forest Biomass Energy of the Federal University of Lavras. In general, all residues showed potential for energetic use. Rice husk was found to have higher lignin content, which is an interesting attribute as far as energy production is concerned. Its high ash content, however, led to a reduction in calorific value and fixed carbon. The remaining residues were found to have similar energetic characteristics, with corn cob showing greater calorific value, followed by coffee plant stem, both also containing higher levels of carbon and fixed carbon. A high correlation was found of higher calorific value with volatile materials, carbon and hydrogen contents.

  20. Thermal processing of animal meal and animal bodies. Conference; Thermische Verwertung von Tiermehl und Tierkoerpern. Tagung

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-07-01

    The problems of BSE and foot-and-mouth disease has shown how important it is to develop economically and ecologically acceptable processes for disposal of animal meal and animal body residues. The focus of the discussion was on co-combustion in power stations and incinerators, mono-combustion and concepts for thermal disposal. VDI-Berichte 1622 addresses planners, producers and operators of power plants, incinerators and plants for disposal of animal residues, licensing authorities, consultants and scientists. [German] Die BSE- und MKS-Problematik in den letzten Monaten hat gezeigt, wie notwendig es ist, wirtschaftliche und oekologisch vertraegliche Verfahren zur Entsorgung von Tiermehl und Tierresten zu entwickeln und umzusetzen. Im Mittelpunkt der Diskussion standen daher Hintergrundinformationen und erste Erfahrungen mit dem UBA-Leitfaden zur Tiermehlbeseitigung, die Technik der Mitverbrennung in Kraftwerken und Muellverbrennungsanlagen, die Monoverbrennung sowie Konzepte zur thermischen Verwertung in Tierkoerperbeseitigungsanlagen. Die VDI-Berichte 1622 wenden sich an Planer, Hersteller und Betreiber von Kraftwerken, Muellverbrennungs- und Tierkoerperbeseitigungsanlagen, an Genehmigungsbehoerden sowie an auf diesem Gebiet taetige Beratungsunternehmen und Wissenschaftler. (orig.)

  1. Nuclear Magnetic Resonance Study on Low-Dimensional Antiferromagnetic Oxides: VOMoO4 and (V0.56Mo0.44)2O5

    Science.gov (United States)

    Takata, Shohei; Wada, Shinji; Shiozaki, Ikuyo

    2001-04-01

    We have carried out the nuclear magnetic resonance (NMR) of 51V in VOMoO4, which contains linear chains of distorted VO6 octahedra. The temperature dependence of the resonance shift K shows a small extremum around 100 K, that can reasonably be compared with the Bonner-Fisher-type behavior of the susceptibility χ. 51V relaxation rate T1-1, on the other hand, has a complex temperature dependence: an exponential decrease down to ˜100 K, a near plateau between ˜100 and ˜34 K, and a monotonous decrease below ˜34 K. These are interpreted in terms of thermal-excitations between split t2g orbitals in energy (ΔE˜680 K) due to the local distortion of VO6 octahedra at high temperatures, one-dimensional d-spin fluctuations, and a short-range magnetic ordering at low temperatures, respectively. It is noted that the change in the a-axis length must be taken into consideration to adequately describe the broad maximum observed in both K and χ around 100 K. The 51V NMR in the related oxide (V0.56Mo0.44)2O5 was also carried out, in which the VO6 and MoO6 octahedra form a planer network sharing the corner oxygen atoms.

  2. Crystal structure, thermochromic and magnetic properties of organic-inorganic hybrid compound: (C7H7N2S)2CuCl4

    Science.gov (United States)

    Vishwakarma, Ashok K.; Kumari, Reema; Ghalsasi, Prasanna S.; Arulsamy, Navamoney

    2017-08-01

    The synthesis, thermal analysis, crystal structure and magnetic properties of (2-aminobenzothiazolium)2CuCl4, organic-inorganic hybrid compound, have been described. The compound crystallizes in the monoclinic space group P21/c with two formula units in a unit cell of dimensions a = 6.9522(4) Å, b = 9.6979(4) Å, c = 13.9633(6) Å, β = 97.849(3)° and volume 930.83(8) Å3 at 150(2) K. The structure consists of isolated nearly square planer [CuC14]2- units, with somewhat longer than normal Cusbnd Cl bond lengths [Cusbnd Cl (average) = 2.2711 Å]. The magnetic measurements of (2-aminobenzothiazolium)2CuCl4 using SQUID magnetometer show paramagnetic nature of the compound. Thermal measurements (TG-DTA and DSC) on this compound showed reversible phase transition at 83 °C. This transition is accompanied by the reversible change in colour of the prismatic crystal from green to dark brown, thermochromic behaviour. Temperature dependent EPR measurements on powdered sample ascertain change in coordination sphere around Cu(II) with shift in g|| = 2.150 and g⊥ = 2.071 at room temperature, typical of square planar, to g|| = 2.201 and g⊥ = 2.182 at 170 °C, typical of distorted tetrahedral geometry.

  3. 4. meeting on passive solar energy houses. Proceedings; 4. Passivhaus Tagung. Tagungsband

    Energy Technology Data Exchange (ETDEWEB)

    Feist, W. [ed.; Sariri, V.; Nagel, M. [comps.] [Passivhaus Institut, Darmstadt (Germany)

    2000-03-01

    This is the report on the 4th Passive Building Conference, which took place at Kassel on March 10/11, 2000. There were eight sections: (a) Planners' workshop; (b) Architecture; (c) Ventilation; (d) Construction practice; (e) Subjective users' comfort and measured results; (f) Practical implementation; (g) economic and ecological assessment; (h) Solar architecture; (i) Heat supply. It was considered particularly favourable that passive solar buildings do not only offer a solution to ecological problems but also a growing market. [German] Der Tagungsband der '4. Passivhaus Tagung', die von 10. bis 11. Maerz 2000 in Kassel stattgefunden hat, beinhalten Beitraege, die in acht Arbeitsgruppen vorgetragen worden: (a) Planer-Werkstatt; (b) Architektur; (c) Lueftungsplanung; (d) Baupraxis; (e) Wohnerfahrung, Messergebnisse; (f) Umsetzung; (g) oekonomische und oekologische Bewertung; (h) Solararchitektur; (i) Waermeversorgung. Es wird vom Herausgeber als besonders erfreulich herausgestellt, dass durch eine erfolgreiche Passivhaus-Entwicklung neben der Loesung der Klimaprobleme zugleich ein neuer Wachstumsmarkt geschaffen werde, der mit einer Mehrung von Wertschoepfung und Wohlstand verbunden ist. (AKF)

  4. Derivation of Incident Angle and Sweeping Voltage Design on Advanced Ionospheric Probe onboard FORMOSAT-5

    Science.gov (United States)

    Lin, Z. W.; Chao, C. K.; Chang, Y. S.

    2014-12-01

    Advanced Ionospheric Probe (AIP) developed by the National Central University (NCU), Taiwan, has been selected to install on FORMOSAT-5 satellite. It is an all-in-one plasma sensor with the sampling rate up to 8,192 Hz to measure ionospheric plasma concentrations, velocities, and temperatures over a wide range of spatial scales. The design of AIP sensor allows it to sequentially perform as a Retarding Potential Analyzer (RPA), an Ion Drift Meter (IDM), an Ion Trap (IT), or a Planer Langmuir Probe (PLP). Unlike the inherited payload IPEI onboard FORMOSAT-1/ROCSAT-1, the entrance opening of IDM of AIP is circular instead of square shape, causes the difference in the geometry calculation of the projection area. New method is present to obtain the incident angle from the incoming plasma beam. Meanwhile, a set of sweeping voltage pattern is defined to get a better result of plasma parameters from RPA function. Upon the requirement of the mission, several sweeping voltage patterns are designed to fit the specified species of plasma to increase the accuracy in the derivation of ram speed and temperature. A simulation is present to show the fitting result in different assumptions and conditions for each sweeping pattern.

  5. A comparative ab intio study on structural evolution, stability and electronic properties of undoped and Al-doped GaxNy ( x + y = 4-25 clusters

    Science.gov (United States)

    Shastri, Rajkamal; Kumar Yadav, Anil; Kumar, Devesh

    2017-07-01

    We present a comparative study on structure evolution, binding energies, relative stabilities, electronic and vibrational properties of size-selected GaN and Al-doped GaN clusters by employing B3LYP exchange-correlation function with double- ξ basis set LANL2DZ via the density functional theory (DFT) method. Cube, ring, and rhombus stacks are constructed, and the optimization results suggest that the evolution of basic structural entities of different morphologies from planer rings to nanotubes may be realized by taking into account the stacking mode of stable clusters. We also find that the geometry of each Al-substituted GaN cluster keeps a structure similar to that of the corresponding pure GaN clusters. The stability, IR and Raman activity vary with the growth of units and the stacking mode. The energetic analysis shows that the most stable structure is the 3-dimensional cubic structure. A blue shift in the vibrational frequency of the most intense Raman activity has been observed with variation in size and structure. Moreover, the vibrational properties are significantly affected by the introduction of Al dopants. We also consider parameters, such as HOMO-LUMO gap, ionization potential (IP), electron affinity (EA), dipole moment (DM), chemical potential (CP), chemical hardness (CH), and results were compared and critically discussed for interpretation of the enhanced stability and to extract useful information for their applications.

  6. Finite Element Analysis of Single Cavity Expansion Silencer%单腔扩张式消声器传声特性的有限元分析

    Institute of Scientific and Technical Information of China (English)

    蓝军; 杜海明

    2001-01-01

    The transfer properties of single cavity exhaust silencer are calculated using finite element method and the results are compared with one dimension planar wave calculation results.The results show that the precision is higher than that of one dimension planer wave calculation on the exhaust silencer frequency property and the muffling magnitude.The results also show that the sound pressure field distribution and the viscosity of gas also affect the properties of exhaust silencer.%对单腔扩张式消声器传声特性进行了有限元分析,与一维平面波法的分析结果进行了比较。结果表明,无论是频率成分还是消声量,二维有限元分析结果较一维平面波分析的精度有了进一步提高。另外从二维有限元消声器内声压场分布和粘滞性气体声压起伏能量耗散的角度,讨论了声压场对系统消声特性的影响。

  7. Synthesis of green nano iron particles (GnIP) and their application in adsorptive removal of As(III) and As(V) from aqueous solution

    Science.gov (United States)

    Prasad, Kumar Suranjit; Gandhi, Pooja; Selvaraj, Kaliaperumal

    2014-10-01

    The present study reports a new approach to synthesise nano iron particles using leaf extract of Mint (Mentha spicata L.) plant. The synthesised GnIPs were subjected to detailed adsorption studies for removal of arsenite and arsenate from aqueous solution of defined concentration. Iron nanoparticles synthesised using leaf extract showed UV-vis absorption peaks at 360 and 430 nm. TEM result showed the formation of polydispersed nanoparticles of size ranging from 20 to 45 nm. Nanoparticles were found to have core-shell structure. The planer reflection of selected area electron diffraction (SAED) and XRD analysis suggested that iron particles were crystalline and belonged to fcc (face centred cubic) type. Energy-dispersive X-ray analysis (EDAX) shows that Fe was an integral component of synthesised nanoparticles. The content of Fe in nanoparticles was found to be 40%, in addition to other elements like C (16%), O (19%) and Cl (23%). FT-IR study suggested that functional groups like sbnd NH, sbnd Cdbnd O, sbnd Cdbnd N and sbnd Cdbnd C were involved in particle formation. The removal efficiency of GnIP-chitosan composite for As(III) and As(V) was found to be 98.79 and 99.65%. Regeneration of adsorbent suggested that synthesised green GnIP may work as an effective tool for removal of arsenic from contaminated water.

  8. Wnt/Ca2+ signaling pathway: a brief overview

    Institute of Scientific and Technical Information of China (English)

    Antara De

    2011-01-01

    The non-canonical Wnt/Ca2+ signaling cascade is less characterized than their canonical counterpart,the Wnt/β-catenin pathway.The non-canonical Wnt signaling pathways are diverse,defined as planer cell polarity pathway,Wnt-RAP1 signaling pathway,Wnt-Ror2 signaling pathway,Wnt-PKA pathway,Wnt-GSK3MT pathway,Wnt-aPKC pathway,Wnt-RYK pathway,Wnt-mTOR pathway,and Wnt/calcium signaling pathway.All these pathways exhibit a considerable degree of overlap between them.The Wnt/Ca2+ signaling pathway was deciphered as a crucial mediator in development.However,now there is substantial evidence that the signaling cascade is involved in many other molecular phenomena.Many aspects of Wnt/Ca2+ pathway are yet enigmatic.This review will give a brief overview of the fundamental and evolving concepts of the Wnt/Ca2+ signaling pathway.

  9. Precision of cephalometric landmark identification: Cone-beam computed tomography vs conventional cephalometric views

    Science.gov (United States)

    Ludlow, John B.; Gubler, Maritzabel; Cevidanes, Lucia; Mol, André

    2009-01-01

    Introduction In this study, we compared the precision of landmark identification using displays of multi-planar cone-beam computed tomographic (CBCT) volumes and conventional lateral cephalograms (Ceph). Methods Twenty presurgical orthodontic patients were radiographed with conventional Ceph and CBCT techniques. Five observers plotted 24 landmarks using computer displays of multi-planer reconstruction (MPR) CBCT and Ceph views during separate sessions. Absolute differences between each observer’s plot and the mean of all observers were averaged as 1 measure of variability (ODM). The absolute difference of each observer from any other observer was averaged as a second measure of variability (DEO). ANOVA and paired t tests were used to analyze variability differences. Results Radiographic modality and landmark were significant at P <0.0001 for DEO and ODM calculations. DEO calculations of observer variability were consistently greater than ODM. The overall correlation of 1920 paired ODM and DEO measurements was excellent at 0.972. All bilateral landmarks had increased precision when identified in the MPR views. Mediolateral variability was statistically greater than anteroposterior or caudal-cranial variability for 5 landmarks in the MPR views. Conclusions The MPR displays of CBCT volume images provide generally more precise identification of traditional cephalometric landmarks. More precise location of condylion, gonion, and orbitale overcomes the problem of superimposition of these bilateral landmarks seen in Ceph. Greater variability of certain landmarks in the mediolateral direction is probably related to inadequate definition of the landmarks in the third dimension. PMID:19732656

  10. Limits of applicability in NDT inspections. Practical examples; Grenzen der Anwendbarkeit bei ZfP-Pruefungen. Beispiele aus der Praxis

    Energy Technology Data Exchange (ETDEWEB)

    Sodeikat, Christian [Ingenieurbuero Schiessl Gehlen Sodeikat GmbH, Muenchen (Germany); Lohse, Carsten [Bewehrungsnachweis und -analyse, Augustusburg (Germany)

    2016-05-01

    Property owners, developers, architects, planners and in many cases courts require further information regarding the state of existing and under construction buildings. In order to avoid concerns on the building structure and to avoid nuisance by noise and dirt and ultimately save costs, structural inspection should be carried out as non-destructive. NDT methods, however, always have application limits that can be very different depending on the methods used and test equipment. However, not every inspection task, the implementation of which customer want, can be solved with NDT methods. The following article presents practical examples of application limits of different NDT methods. [German] Eigentuemer, Bauherren, Architekten, Planer und vielfach auch Gerichte benoetigen weitergehende Informationen bzgl. des Zustands bestehender und auch im Bau befindlicher Bauwerke. Um die Bausubstanz nicht zu beeintraechtigen, Belaestigungen durch Laerm und Dreck zu vermeiden und letztlich Kosten zu sparen, sollen Bauwerksuntersuchungen moeglichst zerstoerungsfrei durchgefuehrt werden. ZfP-Verfahren weisen jedoch immer Anwendungsgrenzen auf, die je nach eingesetzten Verfahren und Pruefgeraeten sehr unterschiedlich sein koennen. Jedoch kann nicht jede Pruefaufgabe, deren Umsetzung sich Auftraggeber wuenschen, mit ZfP-Verfahren geloest werden. Der nachfolgende Beitrag stellt Praxisbeispiele fuer Anwendungsgrenzen verschiedener ZfP-Verfahren dar.

  11. Supersymmetry Enhancement and Junctions in S-folds

    CERN Document Server

    Imamura, Yosuke; Yokoyama, Daisuke

    2016-01-01

    We study supersymmetry enhancement from ${\\cal N}=3$ to ${\\cal N}=4$ proposed by Aharony and Tachikawa by using string junctions in S-folds. The central charges carried by junctions play a central role in our analysis. We consider planer junctions in a specific plane. Before the S-folding they carry two complex central charges, which we denote by $Z$ and $\\bar Z$. The S-fold projection eliminates $\\bar Z$ as well as one of the four supercharges, and when the supersymmetry is enhanced $\\bar Z$ should be reproduced by some non-perturbative mechanism. For the models of $\\mathbb{Z}_3$ and $\\mathbb{Z}_4$ S-folds which are expected to give $SU(3)$ and $SO(5)$ ${\\cal N}=4$ theories we compare the junction spectra with those in perturbative brane realization of the same theories. We establish one-to-one correspondence so that $Z$ coincides. By using the correspondence we also give an expression for the enhanced central charge $\\bar Z$.

  12. Synthesis, structural characterization, thermal and electrochemical studies of mixed ligand Cu(II) complexes containing 2-phenyl-3-(benzylamino)-1,2-dihydroquinazoline-4-(3H)-one and bidentate N-donor ligands.

    Science.gov (United States)

    Sawant, V A; Yamgar, B A; Sawant, S K; Chavan, S S

    2009-12-01

    Some mixed ligand Cu(II) complexes of the type [Cu(L)(en)X(2)] (1a-3a), [Cu(L)(en)](ClO(4))(2) (4a), [Cu(L)(phen)X(2)] (1b-3b) and [Cu(L)(phen)](ClO(4))(2) (4b) [where L = 2-phenyl-3-(benzylamino)-1,2-dihydroquinazoline-4-(3H)-one; en = ethylenediamine; phen = 1,10-phenanthroline; X = Cl(-), N(3)(-) and NCS(-)] have been prepared. The complexes were characterized on the basis of elemental analysis, molar conductance, magnetic moment, IR, UV-vis, mass, ESR and thermal studies. On the basis of electronic spectral data and magnetic susceptibility measurement octahedral geometry has been proposed for 1a-3a and 1b-3b and square-planer geometry for 4a and 4b. The ESR spectral data of complexes provided information about their structure on the basis of Hamiltonian parameters and degree of covalency. The electrochemical behaviour of mixed ligand Cu(II) complexes was studied which showed that complexes of phen appear at more positive potential as compared to those for corresponding en complexes.

  13. Update on PHELIX Pulsed-Power Hydrodynamics Experiments and Modeling

    Science.gov (United States)

    Rousculp, Christopher; Reass, William; Oro, David; Griego, Jeffery; Turchi, Peter; Reinovsky, Robert; Devolder, Barbara

    2013-10-01

    The PHELIX pulsed-power driver is a 300 kJ, portable, transformer-coupled, capacitor bank capable of delivering 3-5 MA, 10 μs pulse into a low inductance load. Here we describe further testing and hydrodynamics experiments. First, a 4 nH static inductive load has been constructed. This allows for repetitive high-voltage, high-current testing of the system. Results are used in the calibration of simple circuit models and numerical simulations across a range of bank charges (+/-20 < V0 < +/-40 kV). Furthermore, a dynamic liner-on-target load experiment has been conducted to explore the shock-launched transport of particulates (diam. ~ 1 μm) from a surface. The trajectories of the particulates are diagnosed with radiography. Results are compared to 2D hydro-code simulations. Finally, initial studies are underway to assess the feasibility of using the PHELIX driver as an electromagnetic launcher for planer shock-physics experiments. Work supported by United States-DOE under contract DE-AC52-06NA25396.

  14. Tool-related injuries among amateur and professional woodworkers.

    Science.gov (United States)

    Becker, T M; Trinkaus, K M; Buckley, D I

    1996-10-01

    Although woodworking is a popular hobby and the woodworking industry employs thousands of workers nationwide, few studies have examined injuries associated with this activity, especially in relation to woodshop tool use. We conducted a survey of amateur and professional woodworkers (n = 283) in New Mexico to determine histories and rates of tool-specific injuries. Injuries associated with woodshop tool use were reported by 64% of all respondents. Hammers, chisels/gouges, and table saws were most frequently reported in association with injuries, although the highest tool-specific injury rates were associated with use of jointer-planers (4.9 injuries per 1000 person-hours of use), chisels/ gouges (3.3 injuries), and drill presses (3.1 injuries). One third reported tool use-associated injuries that were severe enough to require professional medical attention; 5% of all respondents suffered partial amputations. Courses in the safe use of shop tools may help to reduce rates of injuries among woodworkers.

  15. Spectroscopic and biological studies of new binuclear metal complexes of a tridentate ONS hydrazone ligand derived from 4-amino-6-methyl-3-thioxo-3,4-dihydro-1,2,4-triazin-5(2H)-one and 4,6-diacetylresorcinol.

    Science.gov (United States)

    Adly, Omima M I; Emara, Adel A A

    2014-11-11

    The binuclear hydrazone, H2L, ligand derived from 4-amino-6-methyl-3-thioxo-3,4-dihydro-1,2,4-triazin-5(2H)-one and 4,6-diacetylresorcinol, in the molar ratio 2:1, and its copper(II), nickel(II), cobalt(II), zinc(II), cadmium(II), cerium(III), iron(III), oxovanadium(IV) and dioxouranium(VI) complexes have been synthesized. Structures of the ligand and its metal complexes were characterized by elemental analyses, spectral (infrared, electronic, mass, 1H NMR and ESR) data, magnetic susceptibility, molar conductivity measurements and thermal gravimetric analysis (TGA). The ligand acts as dibasic with two ONS tridentate sites. The bonding sites are the azomethine nitrogen, phenolate oxygen and sulfur atoms. The metal complexes exhibit different geometrical arrangements such as square planer, tetrahedral and octahedral. The Coats-Redfern equation was used to calculate the kinetic and thermodynamic parameters for the different thermal decomposition steps of some complexes. The ligand and its metal complexes showed antimicrobial activity towards Gram-positive bacteria (Staphylococcus aureus and Bacillus subtilis), Gram-negative bacteria (Salmonella typhimurium and Escherichia coli), yeast (Candida albicans) and fungus (Aspergillus fumigatus). Structural parameters of the ligand and its metal complexes were theoretically computed on the basis of semiempirical PM3 level, and the results were correlated with their experimental data.

  16. Influence of Specularly Reflected Light on Implosion Uniformity in Indirect-Drive Laser Fusion.

    Science.gov (United States)

    Nishimura, H.; Honda, H.; Fujita, K.; Ochi, Y.; Ohnuki, D.; Miyamoto, S.; Takabe, H.; Mima, K.

    1996-11-01

    At early stage of pellet heating, the collisional path length may be short and some of specularly reflected light, so called glint light, from the inner wall of the x-ray confining cavity shines on the capsule surface and imposes initial imprint on it. Effect of the glint light has been investigated. X-ray frame images of a gold coated solid sphere was obtained with Gekko XII. The cavity was either a decagonal cylinder or a circular one. Smooth emission images were obtained for the decagonal cavity whereas those for the circular cylinder were strongly nonuniform corresponding to respective laser spot. Ablation pressure distribution on a planer sample positioned equivalently to the fuel capsule was measured by shock wave velocities. Similar result was obtained, showing that, at the highest pressure portion, about a half of the drive pressure was due to the glint light. The experimental results fit with predictions with a simple 3-dimensional illumination code. It is predicted with this code that the glint effect is hard to be eliminated from the current irradiation geometry.

  17. Insulating correctly. Manual for up-to-date construction in existing buildings; Richtig daemmen. Handbuch fuer zeitgemaesses Bauen im Bestand

    Energy Technology Data Exchange (ETDEWEB)

    Gaenssmantel, Juergen; Geburtig, Gerd

    2008-07-01

    The authors show clearly what have to be taken into account during modernization or retrofitting of an existing building or during new construction an optimal planning according to energetic points of view. Content: selection of a suitable insulation materials; airtightness and thermography; overview on insulating materials; selection of manufacturers and correct contracts; ventilation by heat recovery. (GL) [German] Die beiden Autoren zeigen auf, welche Beobachtungen und Ueberlegungen anzustellen sind, bevor ein Daemmstoff in die Hand genommen wird. Das Buch hilft dem Praktiker die verschiedenen Gegebenheiten, Anforderungen und Materialien zu beurteilen. Dazu werden auch grundlegende bauphysikalische Kenntnisse vermittelt, wie sie heute fuer jeden auf einer Baustelle verantwortlich Taetigen unerlaesslich sind. Diskutiert werden neben den Moeglichkeiten auch die Grenzen des Daemmens. Die zahlreiche Uebersichten und Checklisten erhoehen den praktischen Nutzen dieses Buches. Bei konkreten Bauvorhaben helfen sie, aus dem Buendel von Anforderungen, Gebaeudedaten und Beobachtungen zu einem Urteil zu kommen. Das Buch bietet Entscheidungshilfen und Antworten zu den Fragen: - Wo lohnt es sich nachtraeglich zu daemmen? - Wie waehlt man den geeigneten Daemmstoff aus? - Welche Checklisten kann man bei der Auswahl anwenden? - Warum haben auch energetische Nachruestungen ihre Grenzen? - Weshalb muessen bauphysikalische 'Spielregeln' beachtet werden? Ein umfangreicher Adressteil mit den Angaben zu den Herstellern von Waermedaemm-Verbundsystemen, Daemmputzen und Daemmstoffen ergaenzt das Werk. Das Buch wendet sich in erster Linie an die Fachunternehmer und Handwerker, die im Bereich des Bauens im Bestand taetig sind, darueber hinaus auch an Energieberater und Planer. (orig.)

  18. The Thinking And Strategy Of Precise Plan With Big Data%大数据助推精准规划的思路与策略

    Institute of Scientific and Technical Information of China (English)

    惠西鲁

    2015-01-01

    In recent years, the development of ICT borough the big data, and the big data change the technology and thinking model. With big data, urban planer wil clear the urban status and future, advance the reform of urban plan, ofer the better service and innovation, come true the precise plan.%近年来,信息通信技术的快速发展加速了大数据时代的到来。大数据带来了技术方法和思维方式的转变,将大数据与城市规划有机结合,可以更为客观地认识城市的现状和未来,推动城市规划的变革,为城市规划提供更好的服务和创新,最终实现精准规划。

  19. Hybrid magnetoresistance in Pt-based multilayers: Effect originated from strong interfacial spin-orbit coupling.

    Science.gov (United States)

    Meng, Kangkang; Xiao, Jiaxing; Wu, Yong; Miao, Jun; Xu, Xiaoguang; Zhao, Jianhua; Jiang, Yong

    2016-02-04

    The hybrid magnetoresistance (MR) behaviors in Pt/Co90Fe10/Pt, Mn1.5Ga/Pt and Mn1.5Ga/Pt/Co90Fe10/Pt multilayers have been investigated. Both planer Hall effect (PHE) and angle-dependent MR in Pt/Co90Fe10/Pt revealed the combination of spin Hall MR (SMR) and normal anisotropic MR (AMR), indicating the large contribution of strong spin-orbit coupling (SOC) at the interfaces. When Pt contacted with perpendicular magnetic anisotropy (PMA) metal Mn1.5Ga, the strong interfacial SOC modified the effective anomalous Hall effect. The MR in Mn1.5Ga/Pt/Co90Fe10/Pt is not a simple combination of SMR and AMR, but ascribed to the complicated domain wall scattering and strong interfacial SOC when Pt is sandwiched by the in-plane magnetized Co90Fe10 and the PMA Mn1.5Ga.

  20. New Tool Creates a Big Stir

    Science.gov (United States)

    2001-01-01

    A new self-adjusting, retractable pin tool for friction stir welding is now used in the manufacturing of components for NASA Space Shuttles. Friction stir welding is a process that makes straight-line welds without bringing the parent material to a liquid state. This is accomplished through high-speed rotation, which generates frictional heat between the welding tool and the piece being welded. This heat causes the material to soften to the point of plasticity without allowing it to melt. The plasticized material is then transferred from the front edge of the welding tool to the trail edge, where it joins the pieces being welded. However, a major flaw of this method is its reliance on a single-piece pin tool. The weld is left unfinished and a hole remains where the pin was inserted. The hole must be covered with a rivet in order to preserve the integrity of the weld. The NASA-developed pin tool, however, eliminates the need for this finishing step, as its retraction allows continuous rewelding at lesser depths, until the hole is completely closed. With this NASA technology, welding of higher strength alloys, as well as non-planer and variable thickness structures can be achieved.

  1. Amylopectin-g-poly(methylacrylate-co-sodium acrylate): An efficient Cd(II) binder.

    Science.gov (United States)

    Sasmal, Dinabandhu; Kolya, Haradhan; Tripathy, Tridib

    2016-10-01

    Synthesis, characterization and Cd(II) adsorption studies of a novel biodegradable graft copolymer based on partially hydrolysed polymethylacrylate (PMA) grafted amylopectin was reported, which was prepared by first grafting of PMA chains onto the amylopectin backbone followed by partial alkaline hydrolysis. The hydrolysed graft copolymer (PHAP) was characterized by measuring saponification equivalent (SE), FTIR, (1)H NMR and (13)C NMR spectroscopy and thermal analysis (TG/DTG). The graft copolymer was biodegradable. Various operating variables affecting the metal sorption such as, amount of adsorbent, solution pH, contact time, temperature and Cd(II) solution concentration were studied which showed that the maximum adsorption of Cd(II) was found at pH 5.5, temperature 90°C, time 120min, polymer dose, 0.02g/L and initial Cd(II) concentration, 50mg/L. The adsorption data were well described by the pseudo-second-order and Langmuir isotherm model. Metal complexation studies were carried out experimentally using UV-visible, FTIR spectroscopy and theoretically using Density Functional Theory by Gaussian 09 and Gauss view 5.0 programmes which confirms a square planer geometry involving Cd(II) and COO(-) groups. Calculation of the various thermodynamic parameters was also done. The negative value of free energy change indicates the spontaneous nature of the adsorption.

  2. Polynomial Quantum Algorithms for Additive approximations of the Potts model and other Points of the Tutte Plane

    CERN Document Server

    Aharonov, D; Eban, E; Landau, Z; Aharonov, Dorit; Arad, Itai; Eban, Elad; Landau, Zeph

    2007-01-01

    In the first 36 pages of this paper, we provide polynomial quantum algorithms for additive approximations of the Tutte polynomial, at any point in the Tutte plane, for any planar graph. This includes as special cases the AJL algorithm for the Jones polynomial, the partition function of the Potts model for any weighted planer graph at any temperature, and many other combinatorial graph properties. In the second part of the paper we prove the quantum universality of many of the problems for which we provide an algorithm, thus providing a large set of new quantum-complete problems. Unfortunately, we do not know that this holds for the Potts model case; this is left as an important open problem. The main progress in this work is in our ability to handle non-unitary representations of the Temperley Lieb algebra, both when applying them in the algorithm, and, more importantly, in the proof of universality, when encoding quantum circuits using non-unitary operators. To this end we develop many new tools, that allow ...

  3. Introduction of the mining planning and control system of Saarbergwerke AG; Einfuehrung des Bergmaennischen Planungs- und Steuerungssystems der Saarbergwerke AG

    Energy Technology Data Exchange (ETDEWEB)

    Seyl, W. [Saarbergwerke AG, Saarbruecken (Germany). Projekt Bergmaennisches Planungs- und Steuerungssystem

    1996-09-12

    The mining planning and control system of Saarbergwerke AG (BPS) is a data bank-assisted program software with graphic control surface for production planning and control, which is adapted to the requirements and considerations of the deep coal mining customary in Germany. According to previous experience with the planning and control system its use offers a company many advantages with regard to design of a colliery with optimum costs. For example, the planner is able to draw up highly informative detailed plans with significant reduction of routine activities. (orig.) [Deutsch] Beim Bergmaennischen Planungs- und Steuerungssystem der Saarbergwerke AG (BPS) handelt es sich um eine datenbankgestuetzte Programmsoftware mit grafischer Bedienoberflaeche zur Produktionsplanung und -steuerung, die an die Beduerfnisse und Betrachtungsweisen des in der Bundesrepublik ueblichen Steinkohlentiefbaus angepasst ist. Nach den bisherigen Erfahrungen mit dem BPS bietet sein Einsatz auf dem Weg zur kostenoptimalen Gestaltung des Bergwerks fuer das Unternehmen eine Vielzahl von Vorteilen. So wird dem Planer die schnelle Erstellung detaillierter Plaene mit hoher Aussagekraft bei weitgehender Entlastung von Routinetaetigkeiten ermoeglicht. BPS bietet Unterstuetzung im Stadium der Entscheidungsfindung durch die Moeglichkeit der Simulation und des Vergleichs verfahrenstechnischer Alternativen sowohl von der Mengen- als auch von der Kostenseite. (orig.)

  4. High figure-of-merit SOI power LDMOS for power integrated circuits

    Directory of Open Access Journals (Sweden)

    Yashvir Singh

    2015-06-01

    Full Text Available The structural modifications in the conventional power laterally diffused metal-oxide-semiconductor field-effect transistor (LDMOS are carried out to improve the breakdown voltage, on-resistance, gate-charge and figure-of-merits of the device with reduced cell pitch. The modified device has planer structure implemented on silicon-on-insulator which is suitable for low to medium voltage power integrated circuits. The proposed LDMOS consists of two gate electrodes placed vertically in two separate trenches build in the drift region and single source and drain contacts are taken on the top. The trench structure reduces the electric field inside the drift region and allow increased drift layer doping concentration leading to higher breakdown voltage, lower specific on-resistance, reduced gate-drain charge, and substantial improvement in the figure-of-merits. Using two-dimensional simulations, the performance of the proposed LDMOS is optimized and results are compared with the conventional LDMOS. Our simulation results show that the proposed device exhibits 110% higher breakdown voltage, 40% reduction in cell pitch, 19% lower specific on-resistance, 30% lower gate-to-drain charge leading to 5.5 times improvement in Baliga's figure-of-merit and 43% reduction in dynamic figure-of-merit over the conventional device.

  5. Green Building Challenge 98 (GBC 98) - process, boundary conditions, tools of assessment, demonstration projects. Final report; Green Building Challenge 98 (GBC 98) - Prozess, Rahmenwerk, Bewertungstool, Demonstrationsgebaeude. Abschlussbericht

    Energy Technology Data Exchange (ETDEWEB)

    Loehnert, G. [Solidar Planungsgesellschaft Architekten und Ingenieure, Berlin (Germany); Luetzkendorf, T. [Bauhaus-Universitaet Weimar (DE). Inst. fuer Ressourcenschonendes Bauen (IREB); Schuler, M. [TRANSSOLAR Energietechnik GmbH, Stuttgart (Germany); Kohler, N. [ifib, Universitaet Karlsruhe (TH) (Germany)

    2000-06-01

    Project goals: (a) Establishment of general definitions for green buildings on the basis of national and regional conditions for individualized application of an assessment system; (b) Transfer of environmentally and energy-relevant planning indicators from successful projects to other projects in order to produce multiplication effects; (c) Development of internationally comparable orientation aids and standards for green buildings, identification and documentation of exceptional and standard-setting buildings; (d) Development and follow-up of a long-term development process and information exchange for providing the preconditions for advertizing and marketing of green building concepts. [German] Zielsetzung und Anlass des Vorhabens: Entwicklung und Information ueber die Fortschritte und Umsetzungsmoeglichkeiten in der Bewertung von Leistungen und Qualitaeten umweltentlastender Bauweisen fuer Wissenschaftler, Planer und Bauherren. Die Projektziele verfolgen im einzelnen die: (a) Schaffung allgemeingueltiger Definitionen umweltgerechter Bauweisen (green buildings) auf der Basis nationaler / regional-spezifischer Bedingungen fuer die individuelle Anwendung eines Bewertungssystems (b) Uebertragung von umwelt- und energierelevanten Planungsindikatoren aus erfolgreichen Einzelprojekten auf andere Projekte zur Erzeugung von Multiplikatoreneffekten (c) Entwicklung international vergleichbarer Orientierungshilfen und Massstaebe fuer das umweltgerechte Gebaeude sowie die Identifizierung und Dokumentation aussergewoehnlicher und vorbildlicher Gebaeude (d) Foerderung und Pflege eines langfristigen Entwicklungsprozesses und Informationsaustausches mit dem Ziel, Voraussetzungen zur Werbung und Marktumsetzung 'gruener' Gebaeude-/Baukonzepte zu liefern. (orig.)

  6. Wind energy utilisation. 7. enl. and compl. rev. ed.; Nutzung der Windenergie

    Energy Technology Data Exchange (ETDEWEB)

    Heier, Siegfried [Kassel Univ. (Germany)

    2016-07-01

    The use of wind energy register furthermore rapid technological advances. Intensive research efforts in scientific institutions and in industry have led to it that the plants are reliable high technology products today. An overview of these developments give the completely revised BINE reference-book. The focus is on technologies, concepts and the market development of the wind industry. Other topics include network integration, economy and current research perspectives as well as environmental balance and repowering. Planners, investors and students get an overview of the status and development of the technology, the economy and the legal framework. [German] Die Nutzung der Windenergie verzeichnet weiterhin rasante technologische Fortschritte. Intensive Forschungsanstrengungen an wissenschaftlichen Institutionen und in der Industrie haben dazu gefuehrt, dass die Anlagen heute zuverlaessige Hightech Produkte sind. Einen Ueberblick ueber diese Entwicklungen gibt das vollstaendig ueberarbeitete BINE-Fachbuch. Im Mittelpunkt stehen Technologien, Konzepte und die Marktentwicklung der Windbranche. Weitere Themen sind die Netzintegration, Wirtschaftlichkeit und aktuelle Forschungsperspektiven sowie Umweltbilanz und Repowering. Planer, Investoren und Studierende erhalten einen Ueberblick ueber Stand und Entwicklung der Technik, die Wirtschaftlichkeit sowie die rechtlichen Rahmenbedingungen.

  7. Cren(ulation)-­1,2 Preshot Report

    Energy Technology Data Exchange (ETDEWEB)

    Rousculp, Christopher L. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Oro, David Michael [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Griego, Jeffrey Randall [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Bradley, Joseph Thomas [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Hollander, Brian J. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Reinovsky, Robert Emil [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2015-12-21

    There is great interest in the behavior of the free surface of tin under shock loading. While it is known that meso-scale surface imperfections can seed the RichtmyerMeshkov Instability (RMI) for a surface that is melted on release, much less is known about a tin surface that is solid, but plastically deforming. Here material properties such as shear and yield strength come into play especially in converging geometry. Previous experiments have been driven by direct contact HE. Usually a thin, flat target coupon is fielded with various single-mode, sinusoidal, machined, profiles on the free surface. The free surface is adjacent to either vacuum or an inert receiver gas. Most of these previous driver/target configurations have been nominal planer geometry. With modern HE it has been straightforward to shock tin into melt on release. However it has been challenging to achieve a low enough pressure for solid state on release. Here we propose to extend the existing base of knowledge to include the behavior of the free surface of tin in cylindrical converging geometry. By shock loading a cylindrical tin shell with a magnetically driven cylindrical liner impactor, the free surface evolution can be diagnosed with proton radiography. With the PHELIX capacitor bank, the drive can easily be varied to span the pressure range to achieve solid, mixed, and liquid states on release.

  8. Investigation of Surface Phenomena in Shocked Tin in Converging Geometry

    Energy Technology Data Exchange (ETDEWEB)

    Rousculp, Christopher L. [Los Alamos National Laboratory; Oro, David Michael [Los Alamos National Laboratory; Griego, Jeffrey Randall [Los Alamos National Laboratory; Turchi, Peter John [Los Alamos National Laboratory; Reinovsky, Robert Emil [Los Alamos National Laboratory; Bradley, Joseph Thomas [Los Alamos National Laboratory; Cheng, Baolian [Los Alamos National Laboratory; Freeman, Matthew Stouten [Los Alamos National Laboratory; Patten, Austin Randall [Los Alamos National Laboratory

    2016-03-21

    There is great interest in the behavior of the free surface of tin under shock loading. While it is known that meso-scale surface imperfections can seed the Richtmyer- Meshkov Instability (RMI) for a surface that is melted on release, much less is known about a tin surface that is solid, but plastically deforming. Here material properties such as shear and yield strength come into play especially in converging geometry. Previous experiments have been driven by direct contact HE. Usually a thin, flat target coupon is fielded with various single-mode, sinusoidal, machined, profiles on the free surface. The free surface is adjacent to either vacuum or an inert receiver gas. Most of these previous driver/target configurations have been nominal planer geometry. With modern HE it has been straightforward to shock tin into melt on release. However it has been challenging to achieve a low enough pressure for solid state on release. Here we propose to extend the existing base of knowledge to include the behavior of the free surface of tin in cylindrical converging geometry. By shock loading a cylindrical tin shell with a magnetically driven cylindrical liner impactor, the free surface evolution can be diagnosed with proton radiography. With the PHELIX capacitor bank, the drive can easily be varied to span the pressure range to achieve solid, mixed, and liquid states on release. A conceptual cylindrical liner and target is shown in Figure 1.

  9. Investigation of Surface Phenomena in Shocked Tin in Converging Geometry

    Energy Technology Data Exchange (ETDEWEB)

    Rousculp, Christopher L. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Oro, David Michael [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Margolin, Len G. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Griego, Jeffrey Randall [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Reinovsky, Robert Emil [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Turchi, Peter John [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2015-08-06

    There is great interest in the behavior of the free surface of tin under shock loading. While it is known that meso-scale surface imperfections can seed the Richtmyer-Meshkov Instability (RMI) for a surface that is melted on release, much less is known about a tin surface that is solid, but plastically deforming. Here material properties such as shear and yield strength come into play especially in converging geometry. Previous experiments have been driven by direct contact HE. Usually a thin, flat target coupon is fielded with various single-mode, sinusoidal, machined, profiles on the free surface. The free surface is adjacent to either vacuum or an inert receiver gas. Most of these previous driver/target configurations have been nominal planer geometry. With modern HE it has been straightforward to shock tin into melt on release. However it has been challenging to achieve a low enough pressure for solid state on release. Here we propose to extend the existing base of knowledge to include the behavior of the free surface of tin in cylindrical converging geometry. By shock loading a cylindrical tin shell with a magnetically driven cylindrical liner impactor, the free surface evolution can be diagnosed with proton radiography. With the PHELIX capacitor bank, the drive can easily be varied to span the pressure range to achieve solid, mixed, and liquid states on release.

  10. Family of Quantum Sources for Improving Near Field Accuracy in Transducer Modeling by the Distributed Point Source Method

    Directory of Open Access Journals (Sweden)

    Dominique Placko

    2016-10-01

    Full Text Available The distributed point source method, or DPSM, developed in the last decade has been used for solving various engineering problems—such as elastic and electromagnetic wave propagation, electrostatic, and fluid flow problems. Based on a semi-analytical formulation, the DPSM solution is generally built by superimposing the point source solutions or Green’s functions. However, the DPSM solution can be also obtained by superimposing elemental solutions of volume sources having some source density called the equivalent source density (ESD. In earlier works mostly point sources were used. In this paper the DPSM formulation is modified to introduce a new kind of ESD, replacing the classical single point source by a family of point sources that are referred to as quantum sources. The proposed formulation with these quantum sources do not change the dimension of the global matrix to be inverted to solve the problem when compared with the classical point source-based DPSM formulation. To assess the performance of this new formulation, the ultrasonic field generated by a circular planer transducer was compared with the classical DPSM formulation and analytical solution. The results show a significant improvement in the near field computation.

  11. Synthesis, Characterization and Spectral Studies of Noble Heterobinuclear Complexes of Transition Metal Ions and their Biological Activity

    Directory of Open Access Journals (Sweden)

    Netra Pal Singh

    2011-01-01

    Full Text Available Some noble heterobinuclear complexes of transition metal ions with bis(salicylaldehydemalonyl-dihydrazone in the presence of 5-nitroindazole Cu(II / Ni(II- chloride of the type [ML1M‘L2Cl2] or [ML1FeL2Cl2]Cl, where M = Ni(II, Cu(II and M' = Mn(II, Co(II, have been prepared. All the complexes have been characterized by IR, UV vis and EPR spectroscopy, elemental analysis, magnetic moment and molar conductance measurement. Spectral studies and magnetic moment measurement in DMF suggest the covalent nature of the complexes, except the [ML1FeL2Cl2]Cl complex which is 1:1 electrolyte. An octahedral geometry is proposed for M‘ and square planer for M for the heterobinuclear complexes. The low value of magnetic moment and overlapping EPR signals are due to spin crossover since both of the metals have unpaired electrons with same molecular symmetry. The lowering of the magnetic moment has been discussed. The biological activity (antifungal and antibacterial of the represented compounds has been studied.

  12. Spectroscopic and biological studies of new binuclear metal complexes of a tridentate ONS hydrazone ligand derived from 4-amino-6-methyl-3-thioxo-3,4-dihydro-1,2,4-triazin-5(2H)-one and 4,6-diacetylresorcinol

    Science.gov (United States)

    Adly, Omima M. I.; Emara, Adel A. A.

    2014-11-01

    The binuclear hydrazone, H2L, ligand derived from 4-amino-6-methyl-3-thioxo-3,4-dihydro-1,2,4-triazin-5(2H)-one and 4,6-diacetylresorcinol, in the molar ratio 2:1, and its copper(II), nickel(II), cobalt(II), zinc(II), cadmium(II), cerium(III), iron(III), oxovanadium(IV) and dioxouranium(VI) complexes have been synthesized. Structures of the ligand and its metal complexes were characterized by elemental analyses, spectral (infrared, electronic, mass, 1H NMR and ESR) data, magnetic susceptibility, molar conductivity measurements and thermal gravimetric analysis (TGA). The ligand acts as dibasic with two ONS tridentate sites. The bonding sites are the azomethine nitrogen, phenolate oxygen and sulfur atoms. The metal complexes exhibit different geometrical arrangements such as square planer, tetrahedral and octahedral. The Coats-Redfern equation was used to calculate the kinetic and thermodynamic parameters for the different thermal decomposition steps of some complexes. The ligand and its metal complexes showed antimicrobial activity towards Gram-positive bacteria (Staphylococcus aureus and Bacillus subtilis), Gram-negative bacteria (Salmonella typhimurium and Escherichia coli), yeast (Candida albicans) and fungus (Aspergillus fumigatus). Structural parameters of the ligand and its metal complexes were theoretically computed on the basis of semiempirical PM3 level, and the results were correlated with their experimental data.

  13. Health service planning and sustainable development: considering what, where and how care is delivered through a pro-environmental lens.

    Science.gov (United States)

    Desmond, Sharon

    2017-03-02

    The aim of the present paper was to review the opportunities currently available to health service planners to advance sustainable development in their future-facing roles within health service organisation. Critical challenges and enablers to facilitate health services planners in adopting a pro-environmental lens are discussed.What is known about the topic? Despite its harmful effect on the environment, health has been slower than other industries to embrace the sustainable development agenda. The attitudes and knowledge base of health service planners with regard to environmental sustainability has not been widely studied. For health service planners, embracing pro-environmental considerations in sustainable model of care development is a powerful opportunity to review care paradigms and prepare for the implementation of meaningful, improved health and system efficiency.What does this paper add? This paper advances the case for health service planners to embrace a pro-environmental stance and guides health service leaders in the preparation and implementation of sustainable and improved health and system efficiency.What are the implications for practitioners? Health service planers are in an ideal position to champion the sustainable development agenda as they explore what care is delivered, how care is delivered and where care is delivered. External policy, health service leadership and carbon literacy are advanced as critical contextual factors to facilitate the key role that health service planners can play in building sustainable healthcare organisations.

  14. WOOD - PLASTIC COMPOSITES FROM WASTE MATERIALS RESULTED IN THE FURNITURE MANUFACTURING PROCESS

    Directory of Open Access Journals (Sweden)

    Camelia COŞEREANU

    2014-06-01

    Full Text Available The paper presents the application of waste materials resulted in the furniture manufacturing process as components for wood-plastic composites. The composites are produced from industrial byproducts, such as shavings and ABS (acrylonitrile butadiene styrene, without coupling agent. The two components are derived from industrial processes of furniture manufacturing: the first one consists of wood residues resulted from planing machine as planer shavings, and the second one from ABS edge banding operation. A wide array of mixtures varying from 100% ABS to 50% ABS: 50% shavings were used to produce eight variants of boards. Density was determined for each board and the method for the determination of ABS particle size distribution by oscillating screen method using sieve apertures up to 4mm was also applied, in order to establish the particle fractions and the distribution of their sizes. Based on ABS properties, several technologies of manufacturing wood-plastic composites from the waste materials were tested and one of them was selected. The results of the first stage analysis, when the physical integrity and the compactness of the panels’ structures were tested, have shown that a maximum proportion of 30% of wood shavings is accepted in the mixture. On the other hand, the low density of the boards and their porous structure recommend further investigations for thermal and sound insulation applications

  15. Uptake and transport of positron-emitting tracer in plants

    Energy Technology Data Exchange (ETDEWEB)

    Kume, Tamikazu; Matsuhashi, Shinpei; Shimazu, Masamitsu [Japan Atomic Energy Research Inst., Takasaki, Gunma (Japan). Takasaki Radiation Chemistry Research Establishment] [and others

    1997-03-01

    The transport of a positron-emitting isotope introduced into a plant was dynamically followed by a special observation apparatus called `Positron-Emitting Tracer Imaging System`. In the system, annihilation {gamma}-rays from the positron emitter are detected with two planer detectors (5 x 6 cm square). The water containing ca. 5 MBq/ml of {sup 18}F was fed to the cut stem of soybean for 2 min and then the images of tracer activity were recorded for 30 - 50 min. When the midrib of a leaf near the petiole was cut just before measurement, the activity in the injured leaf was decreased but detected even at the apex. This result suggests that the damaged leaf recovered the uptake of water through the lamina. Maximum tracer activities in leaves of unirradiated plant were observed within 10 min, whereas those of irradiated plant at 100 Gy were observed after over 25 min. The final activity of irradiated plant after 30 min was lower than that of unirradiated plant. In case of beans, there was a difference in the absorption behavior of the {sup 18}F-labeled water between unirradiated and irradiated samples. These results show that the system is effective to observe the uptake and transportation of water containing positron emitting tracer for the study of damage and recovery functions of plants. (author)

  16. Numerical analysis of surface plasmons excited on a thin metal grating

    Institute of Scientific and Technical Information of China (English)

    OKUNO Yoichi; SUYAMA Taikei

    2006-01-01

    The authors numerically investigated the characteristics of surface plasmons excited on a thin metal grating placed in planer or conical mounting. After formulating the problem, the solution method, Yasuura's method (a modal expansion approach with least-squares boundary matching) was described. Although the grating is periodic in one direction, coupling between TE and TM waves occurs because arbitrary incidence is assumed. This requires the employment of both TE and TM vector modal functions in the analysis. Numerical computations showed: (1) the excitation of surface plasmons with total or partial absorption of incident light; (2) the resonance character of the coefficient of an evanescent order that couples the plasmon surface wave; (3) the field profile and Poynting's vector. The plasmons excited on the surfaces of a thin metal grating are classified into three types:SISP, SRSP, and LRSP, different from each other in the feature of field profile and energy flow. In addition, the eigenvalue of a plasmon mode was obtained by solving a sequence of diffraction problems with complex-valued angles of incidence and using thequasi-Newton algorithm to predict the real angle of incidence at which the absorption occurs.

  17. A case of mushroom shape temporal bone osteoma.

    Science.gov (United States)

    Akamatsu, Tadashi; Tanaka, Rica; Fukui, Tsuyoshi; Miyasaka, Muneo; Yamada, Shinya

    2009-09-20

    A cranial vault Osteoma is relatively common benign tumor. Mushroom shaped skull osteoma is, however, extremely rare. Twenty seven years old female developed slow growing hard mass posterior to the ear. CT scan revealed a mushroom shaped osseous mass approximately 2.5 cm in diameter protruding from the temporal bone at the site of asterion. And the tumor was located over the right sigmoid sinus. The sigmoid sinus engraved approximately 4mm to the tumor and had a branching to one emissaries' vein. Operation was performed under general anesthesia. The tumor was excised first by cutting the base of the tumor, and then residual tumor was grinded using a round head cutting bar. A chisel dissection was not recommended because of underlining sinus. Histological findings were consistent with a benign osteoma. The postoperative course was uneventful. CT examination immediately done after operation revealed no evidence of intracranial hemorrhage, or injury of vessels. Osetoma was excised, and the surface of cranial bone at the operation site was smooth and cosmetically acceptable. At 6-months follow up, patient remains asymptomatic and recurrence free. CT examination with Multi Planer Reconstruction imaging or 3D reconstruction is highly recommended for the operational planning of cranial osteoma.

  18. Partial county development plans as a means for preserving wild reindeer habitats in Norway

    Directory of Open Access Journals (Sweden)

    Hans Olav Bråtå

    2008-06-01

    Full Text Available Norwegian wild reindeer habitats are threatened by human intervention. Wild reindeer habitats are joint region wide common pool resources (CPR. Municipalities may be free-riders to that resource if they prefer investments boosting municipal economy despite negative consequences for wild reindeer as a regional resource. Partial county development plans, following the rules of the Planning and Building Act (PBA, are a means that may combine preservation of habitats and development. In order to analyze such plans, theory on CPR management is applied to spatial development planning in the Rondane and Hardangervidda wild reindeer areas. It is shown that the nested system is in accordance with most of Ostrom’s principles. Still, a joint Planning Board ought to be established at Hardangervidda and a partial county plan for the whole wild reindeer area there ought to be established. It is recommended that regular monitoring of interventions and planning is established. Finally, a system or mechanism for low cost conflict resolution is needed; but is not easily included into a system based on official actors at different levels, the planning and building act and public anticipation on equal management. The last point is important for mutual acceptance of restrictions on own activity. Abstract in Norwegian / Sammendrag:Kunnskap om forvaltning av fellesressurer øker forståelsen av regionale planer for villreinområderNorske villreinområder er truet av menneskelige inngrep. Villreinområdene er en regional fellesressurs, men kommunene kan bli gratispassasjerer i forhold til utnytting av denne ressursen ettersom de kan bli fristet til å vektlegge utbygging som gir lokaløkonomiske effekter, på tross av negative konsekvenser for villreinen som en regional ressurs. Fylkesdelplaner, som er basert på plan- og bygningsloven, er et virkemiddel som kan kombinere bevaring og utvikling. For å forstå slike planers muligheter og begrensninger analyses her

  19. Synthesis of green nano iron particles (GnIP) and their application in adsorptive removal of As(III) and As(V) from aqueous solution

    Energy Technology Data Exchange (ETDEWEB)

    Prasad, Kumar Suranjit, E-mail: suranjit@gmail.com [Department of Environmental Studies, Faculty of Science, The M. S. University of Baroda, Vadodara, 390002, Gujarat (India); Gandhi, Pooja, E-mail: poojagandhi.3090@gmail.com [Department of Environmental Sciences, Ashok and Rita Patel Institute of Integrated Study and Research in Biotechnology and Allied Sciences (ARIBAS), New Vallabh Vidyanagar, Anand, Gujarat, 388121 (India); Selvaraj, Kaliaperumal, E-mail: k.selvaraj@ncl.res.in [Nano and Computational Materials Lab, Catalysis Division, National Chemical Laboratory, Council of Scientific and Industrial Research, Pune, 411008 (India)

    2014-10-30

    Graphical abstract: - Highlights: • Colloidal GnIP synthesised using extract of Mint leaves were entrapped in chitosan beads. • GnIP loaded beads were employed for removal of As ions, showed excellent removal efficiency. • Iron and chitosan are cost effective materials hence can be a good adsorbent for removal of arsenic. - Abstract: The present study reports a new approach to synthesise nano iron particles using leaf extract of Mint (Mentha spicata L.) plant. The synthesised GnIPs were subjected to detailed adsorption studies for removal of arsenite and arsenate from aqueous solution of defined concentration. Iron nanoparticles synthesised using leaf extract showed UV–vis absorption peaks at 360 and 430 nm. TEM result showed the formation of polydispersed nanoparticles of size ranging from 20 to 45 nm. Nanoparticles were found to have core–shell structure. The planer reflection of selected area electron diffraction (SAED) and XRD analysis suggested that iron particles were crystalline and belonged to fcc (face centred cubic) type. Energy-dispersive X-ray analysis (EDAX) shows that Fe was an integral component of synthesised nanoparticles. The content of Fe in nanoparticles was found to be 40%, in addition to other elements like C (16%), O (19%) and Cl (23%). FT-IR study suggested that functional groups like -NH, -C=O, -C=N and -C=C were involved in particle formation. The removal efficiency of GnIP-chitosan composite for As(III) and As(V) was found to be 98.79 and 99.65%. Regeneration of adsorbent suggested that synthesised green GnIP may work as an effective tool for removal of arsenic from contaminated water.

  20. Application of the Hot Asphalt Recycling in Highway%沥青热再生在高速公路中的应用

    Institute of Scientific and Technical Information of China (English)

    顾群

    2013-01-01

    Along with the economic development, the road maintenance is rapid developed, has entered the large-scale repair maintenance stage. Traditional maintenance way of mil-ing planer repainting, usual y wastes a lot of aggregate and as-phalt materials, a large amount of construction funds, meanwh-ile waste mixture may have a serious impact on the surroundi-ng environment. Asphalt pavement recycling technology as a resource recycling technology, is the route one must take the sustainable development of highway construction in our count-ry. Based on the thermal regeneration test of concrete, this pap-er provides reference experience for application of hot asphalt recycling technology in highway.%  随着经济的发,公路养护事业的迅速发展,目前已进入大规模的维修养护阶段。传统的铣刨重铺等养护方式,通常会耗费很多的砂石、以及沥青材料,浪费大量的建设资金,同时废弃的混合料可能会对周围的生态环境产生严重的影响。沥青路面再生技术作为一种资源循环利用技术,是我国公路建设可持续发展的必由之路。本文以具体的热再生试验为基础,为沥青热再生技术在高速公路中的应用提供了可供参考的经验。

  1. Modified TMAH based etchant for improved etching characteristics on Si{1 0 0} wafer

    Science.gov (United States)

    Swarnalatha, V.; Narasimha Rao, A. V.; Ashok, A.; Singh, S. S.; Pal, P.

    2017-08-01

    Wet bulk micromachining is a popular technique for the fabrication of microstructures in research labs as well as in industry. However, increasing the throughput still remains an active area of research, and can be done by increasing the etching rate. Moreover, the release time of a freestanding structure can be reduced if the undercutting rate at convex corners can be improved. In this paper, we investigate a non-conventional etchant in the form of NH2OH added in 5 wt% tetramethylammonium hydroxide (TMAH) to determine its etching characteristics. Our analysis is focused on a Si{1 0 0} wafer as this is the most widely used in the fabrication of planer devices (e.g. complementary metal oxide semiconductors) and microelectromechanical systems (e.g. inertial sensors). We perform a systematic and parametric analysis with concentrations of NH2OH varying from 5% to 20% in step of 5%, all in 5 wt% TMAH, to obtain the optimum concentration for achieving improved etching characteristics including higher etch rate, undercutting at convex corners, and smooth etched surface morphology. Average surface roughness (R a), etch depth, and undercutting length are measured using a 3D scanning laser microscope. Surface morphology of the etched Si{1 0 0} surface is examined using a scanning electron microscope. Our investigation has revealed a two-fold increment in the etch rate of a {1 0 0} surface with the addition of NH2OH in the TMAH solution. Additionally, the incorporation of NH2OH significantly improves the etched surface morphology and the undercutting at convex corners, which is highly desirable for the quick release of microstructures from the substrate. The results presented in this paper are extremely useful for engineering applications and will open a new direction of research for scientists in both academic and industrial laboratories.

  2. Sonochemical synthesis and DFT studies of nano novel Schiff base cadmium complexes: Green, efficient, recyclable catalysts and precursors of Cd NPs

    Science.gov (United States)

    Parsaee, Zohreh

    2017-10-01

    Novel asymmetric (N4) Schiff bases (Ln, n = 1-3) and their nanosized cadmium complexes derived of 4,4'-(pentylazanediyl) dibenzaldehyde and aminobenzaldehyde are synthesized by sonochemical method and characterized based on physicochemical analysis including 1H NMR, 13C NMR, SEM, TGA, Mass, FT-IR, UV-Vis spectroscopy, elemental analysis, magnetic moment and molar conductance measurements. According to the analytic results of the NMR, UV-Vis and magnetic moment studies, it is found that the geometrical structures of these complexes [CdII2LnCl4], (L = C45H40N5X, X = CH3, Cl, OH) are square planer. The synthesized complexes were so effective as nanocatalyst on the oxidation of primary and secondary alcohols. The oxidation reactions were carried out in ethyl-methyl-imidazolium ionic liquid in presence of NaOCl. In addition Cd NPs were synthesized through the thermal decomposition of mentioned complexes and characterized by using FT-IR, SEM, TEM, EDX and XRD methods, which indicated close accordance to the standard pattern of CdO nanoparticles and an acceptable size at the nanorange (22-27 nm). Furthermore geometrical optimization of the Cd2LnCl4 calculated using DFT/B3LYP with LanL2DZ/6-311+G (d,p) level. The electronic parameter including HOMO-LUMO orbitals, bond gap, chemical hardness-softness, electronegativity, electrophilicity, NMR chemical shifts and IR frequencies were calculated. The calculated NMR shifts and vibrational frequencies showed excellent agreement with experimental data.

  3. Study on laser welding of austenitic stainless steel by varying incident angle of pulsed laser beam

    Science.gov (United States)

    Kumar, Nikhil; Mukherjee, Manidipto; Bandyopadhyay, Asish

    2017-09-01

    In the present work, AISI 304 stainless steel sheets are laser welded in butt joint configuration using a robotic control 600 W pulsed Nd:YAG laser system. The objective of the work is of twofold. Firstly, the study aims to find out the effect of incident angle on the weld pool geometry, microstructure and tensile property of the welded joints. Secondly, a set of experiments are conducted, according to response surface design, to investigate the effects of process parameters, namely, incident angle of laser beam, laser power and welding speed, on ultimate tensile strength by developing a second order polynomial equation. Study with three different incident angle of laser beam 89.7 deg, 85.5 deg and 83 deg has been presented in this work. It is observed that the weld pool geometry has been significantly altered with the deviation in incident angle. The weld pool shape at the top surface has been altered from semispherical or nearly spherical shape to tear drop shape with decrease in incident angle. Simultaneously, planer, fine columnar dendritic and coarse columnar dendritic structures have been observed at 89.7 deg, 85.5 deg and 83 deg incident angle respectively. Weld metals with 85.5 deg incident angle has higher fraction of carbide and δ-ferrite precipitation in the austenitic matrix compared to other weld conditions. Hence, weld metal of 85.5 deg incident angle achieved higher micro-hardness of ∼280 HV and tensile strength of 579.26 MPa followed by 89.7 deg and 83 deg incident angle welds. Furthermore, the predicted maximum value of ultimate tensile strength of 580.50 MPa has been achieved for 85.95 deg incident angle using the developed equation where other two optimum parameter settings have been obtained as laser power of 455.52 W and welding speed of 4.95 mm/s. This observation has been satisfactorily validated by three confirmatory tests.

  4. Diffusion tensor analysis with nuclear magnetic resonance in human central nervous system

    Energy Technology Data Exchange (ETDEWEB)

    Nakayama, Naoki [Hokkaido Univ., Sapporo (Japan). School of Medicine

    1998-07-01

    Nuclear magnetic resonance has been used to measure the diffusivity of water molecules. In central nervous system, anisotropic diffusion, which is characterized by apparent diffusion tensor D{sub app}{sup {xi}}, is thought to be related to neuronal fiber tract orientation. For precise observation of anisotropic diffusion, it is needed to determine the diagonal and off-diagonal elements of D{sub app}{sup {xi}}. Once D{sub app}{sup {xi}} is estimated from a series of diffusion weighted images, a tissue`s orthotropic principal axes and diffusivity of each direction are determined from eigenvalues and eigenvectors of D{sub app}{sup {xi}}. There are several methods to represent anisotropic diffusion with D{sub app}{sup {xi}}. Examples are diffusion ellipsoids constructed in each voxel depicting both these principal axes and the mean diffusion length in these directions, trace invariant values and its mapping image, largest eigenvalue, and ratio of largest eigenvalue to the other eigenvalue. In this study, the author investigated practical procedure to analyze diffusion tensor D{sub app}{sup {xi}} using both of spin-echo end echo-planer diffusion weighted imagings with 3-tesla magnetic resonance machine in human brain. The ellipsoid representation provided particularly useful information about microanatomy including neuronal fiber tract orientation and molecular mobility reflective of microstructure. Furthermore, in the lesion of Wallerian degeneration, the loss of anisotropy of local apparent diffusion was observed. It is suggested that the function of axons can be observed via degree of anisotropy of apparent diffusion. Consequently, diffusion tensor analysis is expected to be a powerful, noninvasive method capable of quantitative and functional evaluation of the central nervous system. (author)

  5. Development of IBAD/PLD process for long length Y-123 conductors in Fujikura

    Energy Technology Data Exchange (ETDEWEB)

    Iijima, Y. [Fujikura Ltd., 1-5-1, Kiba, Koto-ku, Tokyo 1358512 (Japan)]. E-mail: iijimay@fujikura.co.jp; Kaneko, N. [Fujikura Ltd., 1-5-1, Kiba, Koto-ku, Tokyo 1358512 (Japan); Hanyu, S. [Fujikura Ltd., 1-5-1, Kiba, Koto-ku, Tokyo 1358512 (Japan); Sutoh, Y. [Fujikura Ltd., 1-5-1, Kiba, Koto-ku, Tokyo 1358512 (Japan); Kakimoto, K. [Fujikura Ltd., 1-5-1, Kiba, Koto-ku, Tokyo 1358512 (Japan); Ajimura, S. [Fujikura Ltd., 1-5-1, Kiba, Koto-ku, Tokyo 1358512 (Japan); Saitoh, T. [Fujikura Ltd., 1-5-1, Kiba, Koto-ku, Tokyo 1358512 (Japan)

    2006-10-01

    Long length manufacturing approach of YBa{sub 2}Cu{sub 3}O{sub 7-x} (Y-123) conductor was performed using ion-beam-assisted-deposition (IBAD) and pulsed-laser-deposition (PLD) process in Fujikura Ltd. A new set of reel-to-reel IBAD system was designed using 110 cm x 15 cm assisting ion source. The planer distribution of in-plane texture ({delta}{phi}) for Gd{sub 2}Zr{sub 2}O{sub 7} template films were studied in large deposition area of 100 cm x 25 cm. The throughput of 5.5 m/h with {delta}{phi} of 15{sup o} was obtained for Gd{sub 2}Zr{sub 2}O{sub 7} films grown on 10 mm wide tapes. Long Y-123/CeO{sub 2}/Gd{sub 2}Zr{sub 2}O{sub 7}/Hastelloy tapes were produced by using reel-to-reel vacuum apparatuses of IBAD and PLD. I {sub c} of 153 A, and 88 A were obtained in end-to-end of a 104 m long tape, and a 217 m long one, respectively. I {sub c} of 360 A was obtained in a short sample with Y-123 thickness of 2.0 {mu}m. A cryo-cooled 5-turn x 4-layer small solenoid coil with inner diameter of 60 mm was demonstrated using a Y-123 conductor formed by IBAD/PLD method. No severe heat spot was generated even the transporting current exceeded the coil I {sub c} value of 355 A at 20 K.

  6. Effects of Internal and External Hydrogen on Inconel 718

    Science.gov (United States)

    Walter, R. J.; Frandsen, J. D.

    1999-01-01

    planes. Final brittle failure occurred by hydrogen induced planer decohesion.

  7. Synthesis and evaluation of the complex-forming ability of hydroxypyranones and hydroxypyridinones with Ni (II) as possible inhibitors for urease enzyme in Helicobacter pylori.

    Science.gov (United States)

    Palizban, Abbasali; Saghaie, Lotfollah

    2016-07-01

    The complex-forming ability of 2-methyl-3-hydroxypyran-4-one (1a), 2-ethyl-3-hydroxypyran-4-one (1b), 1,2-dimethyl-3-hydroxypyridin-4-one (4a) and 1-ethyl-2-methyl-3-hydroxypyridin-4-one (4b) with nickel(Ni(II)) were characterized by infrared, ultraviolet, proton nuclear magnetic resonance spectroscopy and melting point. The mole-ratio of nickel:ligands was analyzed by atomic-absorption-spectrometry. The partition-coefficients (KOW) of the compounds were also determined. The binding of ligands with Ni(II) are through deprotonated hydroxyl group (-O(-), disapeared at 3259 cm(-1)) and ioan-pairs of carbonyl group (=CO(.), shifted from 1650 to 1510-1515 cm(-1)). The characterization of complex geometry for bis-(2-methyl-3-hydroxypyranonato)Ni(II) (5a) and bis-(2-ethyl-3-hydroxypyranonato)Ni(II) (5b) predicted to be square-planer while for bis-(1,2-dimethyl-3-hydroxypyridinonato)Ni(II) (5c) and bis-(1-ethyl-2-methyl-3-hydroxypyridinonato)Ni(II) (5d) distorted to tetrahedral-geometry. Inhibitors of Helicobacter pylori urease are nickel chelators. The compounds 1a, 4a and 4b are likely suitable ligands with complex forming-ability to make complexes of 5a, 5c and 5d with nickel. The KOW values show the compound 5c with low partition-coefficient is more suitable ligand with lower penetration from GI lumen. Future studies demand to find out the biological activity of developed compounds on H. pylori.

  8. Synthesis and evaluation of the complex-forming ability of hydroxypyranones and hydroxypyridinones with Ni (II as possible inhibitors for urease enzyme in Helicobacter pylori

    Directory of Open Access Journals (Sweden)

    Abbasali Palizban

    2016-01-01

    Full Text Available The complex-forming ability of 2-methyl-3-hydroxypyran-4-one ( 1a , 2-ethyl-3-hydroxypyran-4-one ( 1b , 1,2-dimethyl-3-hydroxypyridin-4-one ( 4a and 1-ethyl-2-methyl-3- hydroxypyridin-4-one ( 4b with nickel(Ni(II were characterized by infrared, ultraviolet, proton nuclear magnetic resonance spectroscopy and melting point. The mole-ratio of nickel:ligands was analyzed by atomic-absorption-spectrometry. The partition-coefficients (K OW of the compounds were also determined. The binding of ligands with Ni(II are through deprotonated hydroxyl group (-O - , disapeared at 3259 cm -1 and ioan-pairs of carbonyl group (=CO . , shifted from 1650 to 1510-1515 cm -1 . The characterization of complex geometry for bis-(2-methyl-3-hydroxypyranonatoNi(II ( 5a and bis-(2-ethyl-3-hydroxypyranonatoNi(II ( 5b predicted to be square-planer while for bis-(1,2-dimethyl-3-hydroxypyridinonatoNi(II ( 5c and bis-(1-ethyl-2-methyl-3-hydroxypyridinonatoNi(II ( 5d distorted to tetrahedral-geometry. Inhibitors of Helicobacter pylori urease are nickel chelators. The compounds 1a , 4a and 4b are likely suitable ligands with complex forming-ability to make complexes of 5a , 5c and 5d with nickel. The K OW values show the compound 5c with low partition-coefficient is more suitable ligand with lower penetration from GI lumen. Future studies demand to find out the biological activity of developed compounds on H. pylori.

  9. Hydraulic manipulator design, analysis, and control at Oak Ridge National Laboratory

    Energy Technology Data Exchange (ETDEWEB)

    Kress, R.L.; Jansen, J.F. [Oak Ridge National Lab., TN (United States). Robotics and Process Systems Div.; Love, L.J. [Oak Ridge Inst. for Science and Education, TN (United States); Basher, A.M.H. [South Carolina State Univ., Orangeburg, SC (United States)

    1996-09-01

    To meet the increased payload capacities demanded by present-day tasks, manipulator designers have turned to hydraulics as a means of actuation. Hydraulics have always been the actuator of choice when designing heavy-life construction and mining equipment such as bulldozers, backhoes, and tunneling devices. In order to successfully design, build, and deploy a new hydraulic manipulator (or subsystem) sophisticated modeling, analysis, and control experiments are usually needed. To support the development and deployment of new hydraulic manipulators Oak Ridge National Laboratory (ORNL) has outfitted a significant experimental laboratory and has developed the software capability for research into hydraulic manipulators, hydraulic actuators, hydraulic systems, modeling of hydraulic systems, and hydraulic controls. The hydraulics laboratory at ORNL has three different manipulators. First is a 6-Degree-of-Freedom (6-DoF), multi-planer, teleoperated, flexible controls test bed used for the development of waste tank clean-up manipulator controls, thermal studies, system characterization, and manipulator tracking. Finally, is a human amplifier test bed used for the development of an entire new class of teleoperated systems. To compliment the hardware in the hydraulics laboratory, ORNL has developed a hydraulics simulation capability including a custom package to model the hydraulic systems and manipulators for performance studies and control development. This paper outlines the history of hydraulic manipulator developments at ORNL, describes the hydraulics laboratory, discusses the use of the equipment within the laboratory, and presents some of the initial results from experiments and modeling associated with these hydraulic manipulators. Included are some of the results from the development of the human amplifier/de-amplifier concepts, the characterization of the thermal sensitivity of hydraulic systems, and end-point tracking accuracy studies. Experimental and analytical

  10. Solar thermal power systems. Practical guide for heating and air conditioning experts, electricians and roofers, planners and architects, builder-owners and training institutions; Solarthermische Anlagen. Leitfaden fuer SHK-, Elektro- und Dachdeckerhandwerk, fuer Fachplaner und Architekten, Bauherren und Weiterbildungsinstitutionen

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2002-07-01

    There is a growing market for solar thermal power systems. Builder-owners, planners, architects, fitters and heating systems experts as well as roofers require knowledge of solar thermal power generation. This includes technical and marketing information as well as the aspects of consulting, projecting, dimensioning, cost structure, and solar marketing. This guide will give decision aids and contribute to quality-minded projecting and installation of solar thermal power systems. The following aspects are discussed: Assembly and mounting, with many details to account for all possible in-situ conditions; Industrial-scale systems and solar district heating systems; Simulation tools, in detail; Solar swimming pool heating and air heating; Practical strategies for successful solar marketing; Market survey of suppliers of solar systems and components. [German] Der Markt fuer die thermische Nutzung der Sonnenenergie entwickelt sich kraeftig. Bauherren, Planer, Architekten, Gas/Wasser- und Heizungsinstallateure sowie Dachdecker werden in zunehmendem Masse mit der Solarthermie in Beruehrung kommen. Dies betrifft nicht nur die Kenntnis ueber den Stand der Technik und die aktuelle Marktsituation, sondern auch die Bereiche Beratung, Planung, Dimensionierung, Kostenstruktur und das Solarmarketing. Der vorliegende Leitfaden will Entscheidungshilfen geben und dazu beitragen, dass solarthermische Anlagen nach dem neuesten Stand der Technik qualitaetsbewusst geplant und sorgfaeltig installiert werden. Im Vergleich zu seinem Vorgaenger wurden im Leitfaden wurden folgende Schwerpunkte bearbeitet: 1 Der Montagebereich wurde erheblich ausgeweitet, um den vielfaeltigen Vor-Ort-Gegebenheiten bei der Installation gerecht zu werden 2 Der Bereich der Grossanlagen bis zu solaren Nahwaermenetzen wurde vertieft 3 Die Simulationswerkzeuge werden detailliert dargestellt 4 Den Anwendungsbereichen solare Schwimmbadwassererwaermung und Luftheizung ist jeweils ein eigenes Kapitel gewidmet worden 5

  11. Dual source and dual detector arrays tetrahedron beam computed tomography for image guided radiotherapy

    Science.gov (United States)

    Kim, Joshua; Lu, Weiguo; Zhang, Tiezhi

    2014-02-01

    Cone-beam computed tomography (CBCT) is an important online imaging modality for image guided radiotherapy. But suboptimal image quality and the lack of a real-time stereoscopic imaging function limit its implementation in advanced treatment techniques, such as online adaptive and 4D radiotherapy. Tetrahedron beam computed tomography (TBCT) is a novel online imaging modality designed to improve on the image quality provided by CBCT. TBCT geometry is flexible, and multiple detector and source arrays can be used for different applications. In this paper, we describe a novel dual source-dual detector TBCT system that is specially designed for LINAC radiation treatment machines. The imaging system is positioned in-line with the MV beam and is composed of two linear array x-ray sources mounted aside the electrical portal imaging device and two linear arrays of x-ray detectors mounted below the machine head. The detector and x-ray source arrays are orthogonal to each other, and each pair of source and detector arrays forms a tetrahedral volume. Four planer images can be obtained from different view angles at each gantry position at a frame rate as high as 20 frames per second. The overlapped regions provide a stereoscopic field of view of approximately 10-15 cm. With a half gantry rotation, a volumetric CT image can be reconstructed having a 45 cm field of view. Due to the scatter rejecting design of the TBCT geometry, the system can potentially produce high quality 2D and 3D images with less radiation exposure. The design of the dual source-dual detector system is described, and preliminary results of studies performed on numerical phantoms and simulated patient data are presented.

  12. Cross-sectional imaging with rotational panoramic X-ray machine for preoperative assessment of dental implant site. Comparisons of imaging properties with conventional film tomography and computed tomography

    Energy Technology Data Exchange (ETDEWEB)

    Makihara, Masahiro; Nishikawa, Keiichi; Kuroyanagi, Kinya [Tokyo Dental Coll., Chiba (Japan)

    2001-12-01

    To clarify the validity of cross-sectional imaging with rotational panoramic x-ray machine for preoperative assessment of the dental implant site, the imaging properties were compared with those of spiral tomography and multi-planer reconstruction (MPR) manipulation of x-ray computed tomography. Cross-sectional imaging of the maxilla and mandible of an edentulous dry skull was performed by each technique at an image layer thickness of 1 mm. Steel spheres were used to identify cross-sectional planes and measure distance. Six oral radiologists scored the image clarity of structures with 5-grade rating scales and measured the distance between images of 2 steel spheres. Each measured distance was divided by the magnification factor. The actual distance was also measured on the skull. The score and the distance were statistically compared. The Spearman's rank correlation coefficients for the score and the absolute values of the difference in distances measured by different observers were calculated as test units to compare inter-observer agreements statistically. The same observation and measurement were repeated to compare intra-observer agreement. Image clarity of the linear tomography available with a panoramic machine was comparable to spiral tomography and superior to MPR, except for the cortical bone on the lingual side. The inter- and intra-observer agreements were comparable. The accuracy for measurement of distance, the inter- and intra-observer agreements were also comparable to the spiral tomography and superior to those of MPR. Therefore, it is concluded that cross-sectional imaging with a rotational panoramic x-ray machine is useful for preoperative assessment of the dental implant site. (author)

  13. Quality of the surface of Coffea arabica wood

    Directory of Open Access Journals (Sweden)

    Pedro Paulo de Carvalho Braga

    2014-03-01

    Full Text Available The wood of Coffea arabica L. is considered a a residue of the coffee industry and is widely used as a source of energy. Few studies have shown other destinations such as the manufacture of small objects and furniture with rustic design. The objective of this work was to find the best fit in cutting speed during machining planer trowel the wood of Coffea arabica, taking into consideration the quality of the machined surface. The wood from the Coffea arabica came from an 15 years planting, spacing 3 x 2 m, of the municipality of Machado / MG. The tree was pruned, unfolded and flattened, in order for getting cut-proof of 30 mm thick, with variables length and width. The machining tests were performed at the Laboratory of Wood Machining (DCF / UFLA, varying the cutting speed in plane trowel. The qualification of the machined surface was performed by the feed per tooth (fz, visual analysis (ASTM D 1666-87 and roughness Ra and Rz. It was used a completely randomized design with 30 repetitions. We conducted the analysis of variance test and the average of Scott-Knott, at 5% significance level. It was calculated the percentage of marks obtained for the feed per tooth. The results showed that the quality of machined surface with cutting speeds of 19 and 21 m∙s-1 and forward speed of 6 m∙min-1 were satisfactory with small surveys of fiber and low values of feed per tooth ( fz and roughness Ra and Rz.

  14. Manufacturing and Reliability of Nanoscale Devices

    Science.gov (United States)

    Loh, Owen Yin

    The International Technology Roadmap for Semiconductors (ITRS) identifies emerging technologies with the potential to sustain Moore's Law. A necessary progression from conventional CMOS, to non-planer/dual gate CMOS, and ultimately to novel device architectures such as nanoelectromechanical systems (NEMS) is envisioned. The ITRS also identifies critical roadblocks which currently preclude advances beyond CMOS as a means to guide research and development efforts. Roadblocks specific to NEMS include widespread manufacturing challenges associated with manipulating one-dimensional nanostructures, and poor reliability arising from a number of prevalent failure modes. The weight of these roadblocks is evident well beyond the goals of the ITRS, where nanoelectromechanical sensors and other devices face similar obstacles. This thesis focuses on two critical challenges facing the development of robust carbon nanotube-based NEMS: scalable manufacturing methods, and understanding and eliminating prevalent failure modes. Toward the first challenge, probe-based nanomanufacturing schemes are developed to construct well-ordered arrays of individual carbon nanotubes from which NEMS can be fabricated. This work extends beyond the goals of the semiconductor industry, and demonstrates the ability to create functional sub-100-nanometer protein and drug arrays, as well as novel in vitro injection methods for single cell studies. The second part of this thesis indentifies prevalent failure modes and their point of onset within the device design space. Again, these are addressed by the ITRS but have implications reaching well beyond the semiconductor industry. It then seeks to find the underlying mechanisms for the observed failure modes, and introduces easily-implemented solutions which exhibit the ability to eliminate or greatly-suppress the prevalent failure modes, enabling numerous device actuation cycles without failure and demonstrations of functionality not possible with failure

  15. Clinically feasible NODDI characterization of glioma using multiband EPI at 7 T

    Directory of Open Access Journals (Sweden)

    Qiuting Wen

    2015-01-01

    Full Text Available Recent technological progress in the multiband echo planer imaging (MB EPI technique enables accelerated MR diffusion weighted imaging (DWI and allows whole brain, multi-b-value diffusion imaging to be acquired within a clinically feasible time. However, its applications at 7 T have been limited due to B1 field inhomogeneity and increased susceptibility artifact. It is an ongoing debate whether DWI at 7 T can be performed properly in patients, and a systematic SNR comparison for multiband spin-echo EPI between 3 T and 7 T has not been methodically studied. The goal of this study was to use MB EPI at 7 T in order to obtain 90-directional multi-shell DWI within a clinically feasible acquisition time for patients with glioma. This study included an SNR comparison between 3 T and 7 T, and the application of B1 mapping and distortion correction procedures for reducing the impact of variations in B0 and B1. The optimized multiband sequence was applied in 20 patients with glioma to generate both DTI and NODDI maps for comparison of values in tumor and normal appearing white matter (NAWM. Our SNR analysis showed that MB EPI at 7 T was comparable to that at 3 T, and the data quality acquired in patients was clinically acceptable. NODDI maps provided unique contrast within the T2 lesion that was not seen in anatomical images or DTI maps. Such contrast may reflect the complexity of tissue compositions associated with disease progression and treatment effects. The ability to consistently obtain high quality diffusion data at 7 T will contribute towards the implementation of a comprehensive brain MRI examination at ultra-high field.

  16. Les Élégies posthumes d’Ovide ou la ruse poétique d’Ernst Fischer

    Directory of Open Access Journals (Sweden)

    Patrick Hubner

    2012-08-01

    Full Text Available Cet article présente l’œuvre de l'écrivain, poète et pamphlétaire est-allemand, Ernst Fischer qui réécrit l'Exil et l'Histoire sur la ruse des prétendues Élégies posthumes d'Ovide pour énoncer sur le mode à la fois ironique et élégiaque le parallèle entre la figure antique d'Auguste ayant imposé au poète latin son exil dans la région encore barbare de l'ancienne Dacie, l'actuelle Roumanie, et l'ombre de Staline qui n'a jamais cessé de planer sur les pays de l'Est. Cela nous conduit à redéfinir l'élégie comme chant funèbre exprimant depuis l'antiquité une plainte douloureuse et des sentiments mêlant mélancolie et nostalgie mais à laquelle s'ajoutent désormais une ironie et une distance de soi à soi, comme de soi au monde, qui marquent l'avènement d'un exil non plus seulement politique mais pour ainsi dire intérieur et métaphysique. On peut lire ainsi les Élégies posthumes comme le chant du cygne de l'Homme chantant par delà le danger de l'aliénation idéologique, la menace de sa propre disparition derrière les murs désormais invisibles du totalitarisme.

  17. Ultrasonic guided wave characterization and damage detection in foam-core sandwich panel using PWAS and LDV

    Science.gov (United States)

    Chakraborty, Nibir; Roy Mahapatra, D.; Srinivasan, Gopalakrishnan

    2012-04-01

    Lamb wave type guided wave propagation in foam core sandwich structures and detectability of damages using spectral analysis method are reported in this paper. An experimental study supported by theoretical evaluation of the guided wave characteristics is presented here that shows the applicability of Lamb wave type guided ultrasonic wave for detection of damage in foam core sandwich structures. Sandwich beam specimens were fabricated with 10 mm thick foam core and 0.3 mm thick aluminum face sheets. Thin piezoelectric patch actuators and sensors are used to excite and sense guided wave. Group velocity dispersion curves and frequency response of sensed signal are obtained experimentally. The nature of damping present in the sandwich panel is monitored by measuring the sensor signal amplitude at various different distances measured from the center of the linear phased array. Delaminations of increasing width are created and detected experimentally by pitch-catch interrogation with guided waves and wavelet transform of the sensed signal. Signal amplitudes are analyzed for various different sizes of damages to differentiate the damage size/severity. A sandwich panel is also fabricated with a planer dimension of 600 mm x 400 mm. Release film delamination is introduced during fabrication. Non-contact Laser Doppler Vibrometer (LDV) is used to scan the panel while exciting with a surface bonded piezoelectric actuator. Presence of damage is confirmed by the reflected wave fringe pattern obtained from the LDV scan. With this approach it is possible to locate and monitor the damages by tracking the wave packets scattered from the damages.

  18. Analysis of Inhalable Dust Produced in Manufacturing of Wooden Furniture

    Directory of Open Access Journals (Sweden)

    Naxin Yuan

    2014-10-01

    Full Text Available To provide an in-depth understanding of preventing occupational diseases and improving working conditions, characteristics of inhalable dust were studied. The results showed that total dust concentration (TDC from mechanical sanding, portable planning and sanding, putty sanding, and painting sanding with inadequate exhaust ventilation were higher than occupational exposure limits (OELs. The more the furniture material was sanded and the worse the dust exhaust apparatus, the higher the TDC was. The TDC from portable planer sanding and dry sanding and putty sanding was in the range from 8.4 mg/m3 to 8.7 mg/m3 and from 5.3 mg/m3 to 8.4 mg/m3, respectively. The TDC from mechanical sanding and painting sanding was in the range from 4.4 to 6.4 mg/m3 and from 3.4 mg/m3 to 4.9 mg/m3, respectively. More than 90% suspended particulate matter in their TDC had a PM10 in all aforementioned results. The sanding procedure produced 6.7% to 8.2% free silica in the total particulate matter, in addition to wood dust, putty dust, or painting dust. Heavy metals in dust from putty sanding and painting exceeding the OELs were lead (Pb; > 0.3 mg/m3 and cadmium (Cd; > 0.01 mg/m3. There was a large amount of granular grinding material, cluster putty, planar painting dust, and a small amount fibroid wood dust in the dust from putty sanding and painting sanding.

  19. Review of The Latest Technology Progress of Overseas Solid Wood Processing Machines%国外实木加工机床的新技术进展综述

    Institute of Scientific and Technical Information of China (English)

    马岩

    2011-01-01

    近几年,国外木工机床行业新技术层出不穷。木工机床的设计水平有了新的进展,木工机床新技术的发展可能为我国木工机床的开发带来新灵感,我国木工机床行业应该及时抓住这个契机,推出自己的新产品。本文综合今年的几次木工机床展览会的新技术,综述带锯机、木工刨床、木工铣床、开榫机等设备的国外新技术发展,木工机床新技术的进展,在国际木工机床新成就的启示下找到我国木工机床新品种的开发方向。%In recent years, new technologies emerging in foreign woodworking machinery industry, design standards of woodworking machine have also made new progress, so the developments of new technologies of woodworking tools may bring about new inspiration of the development of woodworking machine in our country. Woodworking machinery industry in China should seize this timely opportunity to launch their new products. This article comprehensive the several woodworking machine exhibitions in this year, summary the development of new technologis abroad,such as band saw machine, woodworking planer, woodworking milling machines, mortising machines and other equipments, by reviewing the new woodworking machines progress of technology, inspired by the new achievements of the international woodworking machinery, finding new varieties of development direction of woodworking tools of our country.

  20. The Spatial Distribution and Kinematics of the Circumgalactic Medium

    Science.gov (United States)

    Churchill, Christopher W.; Nielsen, Nikole M.; Kacprzak, Glenn; Charlton, Jane C.; Muzahid, Sowgat

    2017-01-01

    We have examined the spatial distribution and kinematics of the circumgalactic medium (CGM) within 200 kpc of galaxies in the redshift range 0.1 to 1.0. The galaxies are resolved in HST images and are selected to have background quasars with sightlines that probe their CGM. We measured the cool/warm CGM in MgII absorption and the warm/hot CGM in OVI absorption using Keck/HIRES, VLT/UVES, and HST/COS. We have found that the CGM gas is highly organized such that: (1) gas is concentrated along the galaxy polar axes with high velocity dispersion, and (2) gas is concentrated along the galaxy major axes with smaller velocity dispersion. We constrain the geometry of the gas to reside between 20-40 degrees of the projected major axis and within 60 degrees of the projected minor axis, with little-to-no gas found in between. Furthermore, strongest absorption and largest velocity spreads are found for highly inclined (face on) galaxies with the bluest colors, suggesting outflows along the minor axes of star-forming galaxies. The major axis of bluer galaxies have similar velocity spreads to those of the gas surrouncding redder galaxies, which show little spatial preference in the distribution of the gas dynamics. Our results are consistent with the current view of the CGM originating from major axis (co-planer) inflows/recycled gas and from minor axis wind-driven outflows. We address how our results place strong contraints on the baryon cycle.

  1. Uncooled SWIR InGaAs/GaAsSb type-II quantum well focal plane array

    Science.gov (United States)

    Inada, H.; Miura, K.; Mori, H.; Nagai, Y.; Iguchi, Y.; Kawamura, Y.

    2010-04-01

    Low dark current photodiodes (PDs) in the short wavelength infrared (SWIR) upto 2.5μm region, are expected for many applications. HgCdTe (MCT) is predominantly used for infrared imaging applications. However, because of high dark current, MCT device requires a refrigerator such as stirling cooler, which increases power consumption, size and cost of the sensing system. Recently, InGaAs/GaAsSb type II quantum well structures were considered as attractive material system for realizing low dark current PDs owing to lattice-matching to InP substrate. Planar type PIN-PDs were successfully fabricated. The absorption layer with 250 pair-InGaAs(5nm)/GaAsSb(5nm) quantum well structures was grown on S-doped (100) InP substrates by solid source molecular beam epitaxy method. InP and InGaAs were used for cap layer and buffer layer, respectively. The p-n junctions were formed in the absorption layer by the selective diffusion of zinc. Diameter of light-receiving region was 140μm. Low dark current was obtained by improving GaAsSb crystalline quality. Dark current density was 0.92mA/cm2 which was smaller than that of a conventional MCT. Based on the same process as the discrete device, a 320x256 planar type focal plane array was also fabricated. Each PD has 15μm diameter and 30μm pitch and it was bonded to read-out IC by using indium bump flip chip process. Finally, we have successfully demonstrated the 320 x256 SWIR image at room temperature. This result means that planer type PD array with the type II InGaAs/GaAsSb quantum well structure is a promising candidate for uncooled applications.

  2. Parameters of quality of the woodworkability for determination of different usage of Eucalyptus wood

    Directory of Open Access Journals (Sweden)

    José Reinaldo Moreira da Silva

    2009-03-01

    Full Text Available Wood products used in the furniture industry need to have wood work machine surfaces quality optimized andpatronized. There are some classification methods to determine the wood quality, including visual inspection, determination of theadvance per tooth (fz, rugosimeter and laser or just touching. After the wood classification it is determined the usage of the differentwood qualities. The empiricism of the quality parameters in the indication of uses is not always ideal. This study determined the qualityof surfaces of Eucalyptus flat wood and defined appropriate uses for the different quality classes obtained. It had been worked machinedifferent Eucalyptus samples by planer with speed of advance of 3,6,15 and 30 m*min-1. To classify the wood, the determination of theadvance per tooth (calculated fz and measured fz and the visual qualification (ASTMD 1666-87, 1995 were used. Later the woodusage according to quality was determined. The percentage of good samples decreased as the speed advance increased: reaching92%, 69%, 0% and 0% for advance speed of 3,6,15 and 30 m*min-1 respectively. Samples prepared at the speed of 3 and 6 m*min-1 were used to fabricate furniture, cabinet frame and thresholds. About 54%of samples prepared at the speed of 15 m*min-1 were usedfor railing, lambris, structural panels and flooring. About 46% and 100% of samples prepared at the speed of 15 and 30 m*min-1,respectively, were used to fabricate dividers, trusses, fences and, or, exterior gates.

  3. Comparative assessment of power control of axial blowers for condensers and recirculation coolers: Phase control, frequency control, transformers, EC; Vergleich der Leistungsregelung von Axialventilatoren fuer Verfluessiger und Rueckkuehler: Phasenanschnittregler, Frequenzumformer, Transformatoren, EC Technik

    Energy Technology Data Exchange (ETDEWEB)

    Hubert, G. [Hans Guentner GmbH, Fuerstenfeldbruck (Germany)

    2003-07-01

    miteinander vergleichen. Die Schallmessungen am Verfluessiger in der Schallmesskammer decken auch die Messung des gesamten Bereiches des Volumenstromes ab und beinhalten das Luft- und Regelgeraeusch. Es werden die Summenschalldruckpegel vergleichend gegenuebergestellt. Die Ergebnisse bieten den Planer und Anlagenbauer wertvolle Informationen fuer die Auswahl der Leistungsregelung. (orig.)

  4. Design of the first optical system for real-time tomographic holography (RTTH)

    Science.gov (United States)

    Galeotti, John M.; Siegel, Mel; Rallison, Richard D.; Stetten, George

    2008-08-01

    The design of the first Real-Time-Tomographic-Holography (RTTH) optical system for augmented-reality applications is presented. RTTH places a viewpoint-independent real-time (RT) virtual image (VI) of an object into its actual location, enabling natural hand-eye coordination to guide invasive procedures, without requiring tracking or a head-mounted device. The VI is viewed through a narrow-band Holographic Optical Element (HOE) with built-in power that generates the largest possible near-field, in-situ VI from a small display chip without noticeable parallax error or obscuring direct view of the physical world. Rigidly fixed upon a medical-ultrasound probe, RTTH could show the scan in its actual location inside the patient, because the VI would move with the probe. We designed the image source along with the system-optics, allowing us to ignore both planer geometric distortions and field curvature, respectively compensated by using RT pre-processing software and attaching a custom-surfaced fiber-optic-faceplate (FOFP) to our image source. Focus in our fast, non-axial system was achieved by placing correcting lenses near the FOFP and custom-optically-fabricating our volume-phase HOE using a recording beam that was specially shaped by extra lenses. By simultaneously simulating and optimizing the system's playback performance across variations in both the total playback and HOE-recording optical systems, we derived and built a design that projects a 104x112 mm planar VI 1 m from the HOE using a laser-illuminated 19x16 mm LCD+FOFP image-source. The VI appeared fixed in space and well focused. Viewpoint-induced location errors were <3 mm, and unexpected first-order astigmatism produced 3 cm (3% of 1 m) ambiguity in depth, typically unnoticed by human observers.

  5. Complex reconstruction of the dorsal hand using the induced membrane technique associated with bone substitute: A case report

    Science.gov (United States)

    Guillier, David; Rizzi, Philippe; De Taddeo, Alice; Henault, Benoit; Tchurukdichian, Alain; Zwetyenga, Narcisse

    2016-01-01

    Introduction High-energy trauma of the hand often causes tissue loss involving bone, tendon and skin and is sometimes accompanied by devascularization of digits. Bone stabilization is the first step in the management of such injuries. Materials and methods A young patient presented composite tissue loss of the dorsum of his right (dominant) hand following an accident with a surface planer. Tissue loss involved the diaphyses of the first 4 metacarpals, tendons and skin with almost complete amputation of the 3rd finger. Bone stabilization comprised osteosynthesis using pins associated with cement to fill the bone defect. Hunter tendon rods were used for tendon repair and a pedicle groin flap (McGregor) was used to achieve skin coverage. The cement was replaced with autologous cortico-cancellous bone graft combined with bone paste (Nanostim) 3 months after the cement stabilization. Results Eleven months after the accident, the patient was able to return to work as a carpenter. Pinch and Grasp strength in the injured hand were half that in the contralateral hand, but there was no loss of sensitivity. Mobility was very satisfactory with a Kapandji score of 9 and a mean TAM of 280°. The patient can write, open a bottle and does not feel limited for everyday activities. Radiographically, the bone of the 3 reconstructed metacarpals appears consolidated. Conclusion The induced membrane technique allowed the reconstruction of small bone deficits in the long bones of the hand in a two-step procedure, the first step taking place in an emergency context of composite tissue trauma. PMID:27077131

  6. Third symposium: Solar cooling practice. Proceedings; Drittes Symposium: Solares Kuehlen in der Praxis. Tagungsband

    Energy Technology Data Exchange (ETDEWEB)

    Jakob, U. (comp.)

    2004-07-01

    The hot summer of 2003, with more than three degrees higher average daily temperatures and about 20 percent higher insolation, increased the demand for environment-friendly cooling technologies. Thermal cooling with solar energy or waste heat will prevent extreme loads on the public grids. Large-scale projects like the Umweltamt Augsburg office building and an office tower in Kosovo have shown that solar cooling is practically feasible. New developments in liquid absorption are presented both by the producer and in a pilot project involving an Amberg office building. New technologies like diffusion-absorption refrigerators or high-performance two-stage absorption refrigerators were presented at the symposium as well. Attendants were planners, architects, engineers, scientists, and engineers working in air conditioning, solar and refrigeration engineering. The programme was complemented by a general introduction to the market and technology of thermal cooling and by economic efficiency analyses. [German] Nach dem Spitzensommer 2003 mit mehr als 3 Grad hoeheren mittleren Tagestemperaturen und knapp 20% mehr Einstrahlung stellt sich verstaerkt die Frage nach umweltfreundlichen Kuehltechnologien. Um die extreme Belastung der Stromnetze zu vermeiden, bieten sich thermische Kuehlverfahren an, die mit Solarenergie oder Abwaerme betrieben werden. Betriebserfahrungen mit erprobten Technologien in grossen Bauvorhaben wie im Umweltamt Augsburg oder in einem Buerotower im Kosovo zeigen, dass schon heute solares Kuehlen in der Praxis machbar ist. Neuentwicklungen in der Fluessigsorption werden sowohl vom Hersteller praesentiert als auch in einem grosstechnischen Pilotprojekt in einem Amberger Buerobau vorgestellt. Auch neue Technologien wie Diffusions-Absorptionskaeltemaschinen oder zweistufige Absorptionskaelteanlagen mit hohen Leistungszahlen duerfen bei dem Symposium nicht fehlen. Das Symposium richtet sich an Planer, Architekten, Ingenieure, Wissenschaftler und Ingenieure

  7. Dual source and dual detector arrays tetrahedron beam computed tomography for image guided radiotherapy.

    Science.gov (United States)

    Kim, Joshua; Lu, Weiguo; Zhang, Tiezhi

    2014-02-01

    Cone-beam computed tomography (CBCT) is an important online imaging modality for image guided radiotherapy. But suboptimal image quality and the lack of a real-time stereoscopic imaging function limit its implementation in advanced treatment techniques, such as online adaptive and 4D radiotherapy. Tetrahedron beam computed tomography (TBCT) is a novel online imaging modality designed to improve on the image quality provided by CBCT. TBCT geometry is flexible, and multiple detector and source arrays can be used for different applications. In this paper, we describe a novel dual source-dual detector TBCT system that is specially designed for LINAC radiation treatment machines. The imaging system is positioned in-line with the MV beam and is composed of two linear array x-ray sources mounted aside the electrical portal imaging device and two linear arrays of x-ray detectors mounted below the machine head. The detector and x-ray source arrays are orthogonal to each other, and each pair of source and detector arrays forms a tetrahedral volume. Four planer images can be obtained from different view angles at each gantry position at a frame rate as high as 20 frames per second. The overlapped regions provide a stereoscopic field of view of approximately 10-15 cm. With a half gantry rotation, a volumetric CT image can be reconstructed having a 45 cm field of view. Due to the scatter rejecting design of the TBCT geometry, the system can potentially produce high quality 2D and 3D images with less radiation exposure. The design of the dual source-dual detector system is described, and preliminary results of studies performed on numerical phantoms and simulated patient data are presented.

  8. Effects of annealing temperature on mechanical durability of indium-tin oxide film on polyethylene terephthalate substrate

    Energy Technology Data Exchange (ETDEWEB)

    Machinaga, Hironobu, E-mail: hironobu_machinaga@gg.nitto.co.jp; Ueda, Eri; Mizuike, Atsuko; Takeda, Yuuki; Shimokita, Keisuke; Miyazaki, Tsukasa

    2014-05-30

    Effects of the annealing temperature on mechanical durability of indium-tin oxide (ITO) thin films deposited on polyethylene terephthalate (PET) substrates were investigated. The ITO films were annealed at the range from 150 °C to 195 °C after the DC sputtering deposition for the production of polycrystalline ITO layers on the substrates. The onset strains of cracking in the annealed ITO films were evaluated by the uniaxial stretching tests with electrical resistance measurements during film stretching. The results indicate that the onset strain of cracking in the ITO film is clearly increased by increasing the annealing temperature. The in-situ measurements of the inter-planer spacing of the (222) plane in the crystalline ITO films during film stretching by using synchrotron radiation strongly suggest that the large compressive stress in the ITO film increases the onset strain of cracking in the film. X-ray stress analyses of the annealed ITO films and thermal mechanical analyses of the PET substrates also clarifies that the residual compressive stress in the ITO film is enhanced with increasing the annealing temperature due to the considerably larger shrinkage of the PET substrate. - Highlights: • Indium-tin oxide (ITO) films were deposited on polyethylene terephthalate (PET). • Mechanical durability of the ITO is improved by high temperature post-annealing. • The shrinkage in the PET increases with rising the post-annealing temperature. • The shrinkage of the PET enhances the compressive stress in the ITO film. • Large compressive stress in the ITO film may improve its mechanical durability.

  9. Manual of low-capacity bioenergy systems; Handbuch Bioenergie-Kleinanlagen

    Energy Technology Data Exchange (ETDEWEB)

    Hartmann, H. (ed.); Thuneke, K.; Hoeldrich, A.; Rossmann, P.; Meier, L.; Eismann, H.; Nielsen, H.

    2003-02-01

    Brennstoffbeschaffung und -handhabung erleichtern, - die fuer die Realisierung notwendigen Kontakte vermitteln sowie - als Nachschlagewerk fuer alle Fragen rund um das Thema Kleinanlagen dienen. Durch diese Zielvorgabe richtet sich der Leitfaden grundsaetzlich an alle Personen, die sich fuer die energetische Biomassenutzung interessieren und in ihrem unmittelbaren Einflussbereich mit der Problematik in Beruehrung kommen. Damit ist fuer den Leitfaden eine sehr breite Zielgruppe gegeben; sie umfasst die privaten Haushalte im laendlichen und staedtischen Raum, kleine Gewerbebetriebe, Planer und Architekten, Brennstoffproduzenten oder -haendler, private oder oeffentliche Beratungsstellen und Andere. (orig.)

  10. Inequity in maternal health care service utilization in Gujarat: analyses of district-level health survey data

    Directory of Open Access Journals (Sweden)

    Dileep V. Mavalankar

    2013-03-01

    Full Text Available Background: Two decades after the launch of the Safe Motherhood campaign, India still accounts for at least a quarter of maternal death globally. Gujarat is one of the most economically developed states of India, but progress in the social sector has not been commensurate with economic growth. The purpose of this study was to use district-level data to gain a better understanding of equity in access to maternal health care and to draw the attention of the policy planers to monitor equity in maternal care. Methods: Secondary data analyses were performed among 7,534 ever-married women who delivered since January 2004 in the District Level Household and Facility Survey (DLHS-3 carried out during 2007–2008 in Gujarat, India. Based on the conceptual framework designed by the Commission on the Social Determinants of Health, associations were assessed between three outcomes – Institutional delivery, antenatal care (ANC, and use of modern contraception – and selected intermediary and structural determinants of health using multiple logistic regression. Results: Inequities in maternal health care utilization persist in Gujarat. Structural determinants like caste group, wealth, and education were all significantly associated with access to the minimum three antenatal care visits, institutional deliveries, and use of any modern method of contraceptive. There is a significant relationship between being poor and access to less utilization of ANC services independent of caste category or residence. Discussion and conclusions: Poverty is the most important determinant of non-use of maternal health services in Gujarat. In addition, social position (i.e. caste has a strong independent effect on maternal health service use. More focused and targeted efforts towards these disadvantaged groups needs to be taken at policy level in order to achieve targets and goals laid out as per the MDGs. In particular, the Government of Gujarat should invest more in basic

  11. 纺织工程卓越班学生金工实习的实践与探索%Practice and exploration of advanced metalworking practice to textile engineering excellence program students

    Institute of Scientific and Technical Information of China (English)

    王进美; 樊增禄; 南宏正; 卫建刚; 高养民; 刘华明; 同宏峰

    2013-01-01

    According to the requirements of Excellence Engineer T raining Program ,a series of curriculum reform of metalworking practice for textile engineering excellence program students were undertaken .In the lathe work and fitter based training part ,deepen the content of practice ,using lifting training intensi-ty ,to expand their knowledge and to temper the will .In the section of digital control technique ,caster , welder ,miller and planer ,many kinds of innovative product ,such as Chinese cruise ship ,progressional five rings ,and alarm device of anti-welding of sheet metal in welding were designed and made by team or individual .T he innovation and practice training has achieved significant results .%按照国家卓越工程师培养计划的要求,对纺织工程卓越计划班金工实习内容进行了一系列课程改革。在车工、钳工等基础实训部分,加深了实习内容,利用提升实训强度,达到拓展知识面,磨炼意志的目的。在数控、铸、焊、铣、刨等工段,在完成正常实训任务的基础上,利用时间弹性控制,实现各类创新产品的设计制作,依靠团队或个人的智慧,设计制作了中国式巡航舰、前进的五环、气焊防薄板熔穿报警装置等日用与工艺制品,取得了显著的创新实训效果。

  12. America's First Carl Sagan: Ormsby MacKnight Mitchel, Pre-Civil War Astronomer and Lecturer on the Cosmos

    Science.gov (United States)

    Osterbrock, D. E.

    2002-12-01

    In the years before television, videos, radio. movies, or even loudspeakers, Ormsby MacKnight Mitchel (1809-1862) was the best-known popularizer of astronomy and the scientific study of the universe in nineteenth-century America. Each winter he traveled the country by railroad, steamer, and stagecoach, speaking to large paying crowds in principal cities from Boston, New York, and Philadelphia through Cincinnati to New Orleans on the cosmos and our place in it, with special attention to possible inhabitants of planers orbiting other stars. Mitchel had much the same attraction as Sagan did in our time, and awakened many people's interest in astronomy through the human angle, as Carl did. His argument was simple, and according to Frank Triplett goes back thousands of years: other stars are suns, our sun has planets with people on one of them, why should not other stars also have populated planets? But first Mitchel, like Sagan, always explained clearly the discoveries of astronomy that fleshed out this argument with facts. He emphasized the ``clockwork universe", governed by gravity, that Newton, Herschel, and Laplace had investigated and found to be stable. There were many other similarities between these two great popularizers. Mitchel's base was the Cincinnati Observatory, which he had founded, raising the funds for it himself in small contributions from hundreds of ``members", which he publicised as far more democratic than support from European kings and lords. He went abroad to get a telescope, and finally found his ``Great [12-inch] Refractor" in Munich, with help from John Quincy Adams, Astronomer Royal George Biddle Airy, and Paris Observatory Director Fracois Arago, in spite of a rebuff by President John Tyler. These episodes have similarities in Sagan's lobbying NASA for close-up images of Mars. Views of other American professional astronomers on life on other worlds will also be described briefly, from Denison Olmsted, Elias Loomis, Charles A. Young (who

  13. Realizing thin electromagnetic absorbers for wide incidence angles from commercially available planar circuit materials

    Energy Technology Data Exchange (ETDEWEB)

    Glover, Brian B [Los Alamos National Laboratory; Whites, Kieth W [SDSMT; Radway, Matthew J [CU-BOULDER

    2009-01-01

    In this study, recent work on engineering R-card surface resistivity with printed metallic patterns is extended to the design of thin electromagnetic absorbers. Thin electromagnetic absorbers for wide incidence angles and both polarizations have recently been computationally verified by Luukkonen et al.. These absorbers are analytically modeled high-impedance surfaces with capacitive arrays of square patches implemented with relatively high dielectric constant and high loss substrate. However, the advantages provided by the accurate analytical model are largely negated by the need to obtain high dielectric constant material with accurately engineered loss. Fig. I(c) illustrates full-wave computational results for an absorber without vias engineered as proposed by Luukkonen et al.. Unique values for the dielectric loss are required for different center frequencies. Parameters for the capacitive grid are D=5.0 mm and w=O.l mm for a center frequency of 3.36 GHz. The relative permittivity and thickness is 9.20(1-j0.234) and 1=3.048 mm. Consider a center frequency of5.81 GHz and again 1=3.048 mm, the required parameters for the capacitive grid are D=2.0 mm and w=0.2 mm where the required relative permittivity is now 9.20(1-j0.371) Admittedly, engineered dielectrics are themselves a historically interesting and fruitful research area which benefits today from advances in monolithic fabrication using direct-write of dielectrics with nanometer scale inclusions. However, our objective in the present study is to realize the advantages of the absorber proposed by Luukkonen et al. without resort to engineered lossy dielectrics. Specifically we are restricted to commercially available planer circuit materials without use of in-house direct-write technology or materials engineering capability. The materials considered here are TMM 10 laminate with (35 {mu}lm copper cladding with a complex permittivity 9.20-j0.0022) and Ohmegaply resistor conductor material (maximum 250 {Omega

  14. 乙烯基乙酸酯合成钯-金催化剂中金的助催化作用%Promotional Effects of Au in Pd-Au Catalysts for Vinyl Acetate Synthesis

    Institute of Scientific and Technical Information of China (English)

    陈明树; D. W. GOODMAN

    2008-01-01

    硅胶负载的钯-金双金属催化剂是乙烯乙酰氧基化制乙烯基乙酸酯(VA)的高选择性催化剂,本文应用平面和负载纳米颗粒模型催化剂体系研究金的助催化作用,应用低能离子散射谱、低能电子衍射、 X射线光电子能谱、反射红外吸收光谱及程序升温脱附等技术表征这些模型催化剂. 结果表明,金的主要助催化作用是隔离催化剂表面的催化活性钯原子,形成孤立的钯活性中心,从而大大抑制或消除反应物和/或产物在毗邻多原子钯中心上的深度分解,提高VA合成的选择性及活性. 同时由于形成了孤立的钯原子活性中心,反应副产物或中间物之一的一氧化碳吸附较弱,避免了催化剂表面的一氧化碳中毒,进而提高催化活性.%Silica supported Pd-Au bimetallic catalysts are highly selective for the acetoxylation of ethylene to vinyl acetate (VA). In this study we have used model catalysts consisting of planer surfaces and supported nanoparticles to investigate the promotional effects of Au in Pd-Au bimetallic catalysts. Low energy ion scattering spectroscopy, low energy electron diffraction, X-ray photoelectron spectroscopy, infrared reflection adsorption spectroscopy, and temperature-programmed desorption et al, were used to characterize the model systems. The catalytic performance for acetoxylation of ethylene to VA was examined for these model surfaces. In this paper, we summarize the current understanding of the promotional effects of Au in Pd-Au bimetallic catalysts for VA synthesis. The key results are that Au atoms break contiguous Pd atom ensembles at the surface into isolated Pd monomers. The absence of contiguous Pd sites significantly reduces the formation of combustion by-products and suppresses the poison effects of CO, thus enhancing the VA formation selectivity and activity.

  15. 6. conference: Thermal waste management; 6. Fachtagung: Thermische Abfallbehandlung

    Energy Technology Data Exchange (ETDEWEB)

    Faulstich, M.; Urban, A.; Bilitewski, B. (eds.)

    2001-07-01

    Ersatzbrennstoffe stehen etablierte kommunale und industrielle Anlagen zur Mitverbrennung zur Verfuegung. Darueber hinaus sind etliche Unternehmen im Begriff, spezielle Heizwerke oder Heizkraftwerke fuer diese Brennstoffe zu errichten. Die klassischen Muellverbrennungsanlagen, also die Anlagen mit Rosttechnik, gehoeren damit jedoch keineswegs zum alten Eisen, im Gegenteil, sie weisen nach wie vor ein grosses Optimierungs- und Innovationspotenzial auf. Ausgewaehlte neue Konzepte fuer Feuerungen, Kessel, Korrosionsminderung und Rauchgasreinigung werden hier diskutiert. Nicht zuletzt gewinnen die Kosten in der kommunalen Abfallwirtschaft so auch bei der Abfallverbrennung seit Jahren an Bedeutung. Das Benchmarking ist dabei zu einem wichtigen Vergleichs- und Bewertungsinstrument geworden und das Internet wird die Moeglichkeit zukuenftig noch erweitern. Diese sechste Fachtagung ist fuer Hersteller und Betreiber, Planer und Berater sowie die Fachleute aus Verwaltung und Wissenschaft ein umfassendes Forum zur Thermischen Abfallbehandlung geworden. (orig.)

  16. [Backscattering Characteristics of Machining Surfaces and Retrieval of Surface Multi-Parameters].

    Science.gov (United States)

    Tao, Hui-rong; Zhang, Fu-min; Qu, Xing-hua

    2015-07-01

    For no cooperation target laser ranging, the backscattering properties of the long-range and real machined surfaces are uncertain which seriously affect the ranging accuracy. It is an important bottleneck restricting the development of no cooperation ranging technology. In this paper, the backscattering characteristics of three typical machining surfaces (vertidal milling processing method, horizontal milling processing method and plain grinding processing method) under the infrared laser irradiation with 1550 nm were measured. The relation between the surface nachining texture, incident azimuth, roughness and the backscattering distribution were analyzed and the reasons for different processing methods specific backscattering field formed were explored. The experimental results show that the distribution of backscattering spectra is greatly affected by the machined processing methods. Incident angle and roughness have regularity effect on the actual rough surface of each mode. To be able to get enough backscattering, knowing the surface texture direction and the roughness of machined metal is essential for the optimization of the non-contact measurement program in industry. On this basis, a method based on an artificial neural network (ANN) and genetic algorithm (GA), is proposed to retrieve the surface multi-parameters of the machined metal. The generalized regression neural network (GRNN) was investigated and used in this application for the backscattering modeling. A genetic algorithm was used to retrieve the multi-parameters of incident azimuth angle, roughness and processing methods of machined metal sur face. Another processing method of sample (planer processing method) was used to validate data. The final results demonstrated that the method presented was efficient in parameters retrieval tasks. This model can accurately distinguish processing methods and the relative error of incident azimuth and roughness is 1.21% and 1.03%, respectively. The inversion

  17. The implementation of cogeneration plants in new and older buildings for power generation under technical and economic aspects; Der Einsatz von Blockheizkraftwerken im Neubau und Gebaeudebestand zur Waerme-, Kaelte- sowie Elektrizitaetserzeugung unter techni-schen und betriebswirtschaftlichen Gesichtspunkten

    Energy Technology Data Exchange (ETDEWEB)

    Mauersberger, Frank; Lipski, Thomas [heima-welte Haustechnik GmbH und Co.KG, Balingen (Germany); Cibis, Dominik [Europaeische Studienakademie Kaelte-Klima-Lueftung, Maintal (Germany)

    2011-07-01

    durch die Kopplung eines BHKWs mit einer Sorptionskaelteanlage die Wirtschaftlichkeit der Kraft-Waerme-Kopplung deutlich erhoeht und das EEWaermeG in vollem Masse eingehalten werden. Diese Punkte stellen jedoch Planer, Architekten und ausfuehrende Unternehmen vor grosse Herausforderungen. Dieser Fachbeitrag soll einen Ueberblick ueber die verschiedene Moeglichkeiten der Kraft-Waerme-(Kaelte)-Kopplung geben und die jeweiligen Vor- und Nachteile anhand von Wirtschaftlichkeitsberechnungen aufzeigen.

  18. Interaction torque contributes to planar reaching at slow speed

    Directory of Open Access Journals (Sweden)

    Hoshi Fumihiko

    2008-10-01

    Full Text Available Abstract Background How the central nervous system (CNS organizes the joint dynamics for multi-joint movement is a complex problem, because of the passive interaction among segmental movements. Previous studies have demonstrated that the CNS predictively compensates for interaction torque (INT which is arising from the movement of the adjacent joints. However, most of these studies have mainly examined quick movements, presumably because the current belief is that the effects of INT are not significant at slow speeds. The functional contribution of INT for multijoint movements performed in various speeds is still unclear. The purpose of this study was to examine the contribution of INT to a planer reaching in a wide range of motion speeds for healthy subjects. Methods Subjects performed reaching movements toward five targets under three different speed conditions. Joint position data were recorded using a 3-D motion analysis device (50 Hz. Torque components, muscle torque (MUS, interaction torque (INT, gravity torque (G, and net torque (NET were calculated by solving the dynamic equations for the shoulder and elbow. NET at a joint which produces the joint kinematics will be an algebraic sum of torque components; NET = MUS - G - INT. Dynamic muscle torque (DMUS = MUS-G was also calculated. Contributions of INT impulse and DMUS impulse to NET impulse were examined. Results The relative contribution of INT to NET was not dependent on speed for both joints at every target. INT was additive (same direction to DMUS at the shoulder joint, while in the elbow DMUS counteracted (opposed to INT. The trajectory of reach was linear and two-joint movements were coordinated with a specific combination at each target, regardless of motion speed. However, DMUS at the elbow was opposed to the direction of elbow movement, and its magnitude varied from trial to trial in order to compensate for the variability of INT. Conclusion Interaction torque was important at

  19. Elastodynamic Analysis of Planar 3-RRR and 3-PRR Flexible Parallel Robots%平面3-RRR和3-PRR柔性并联机器人弹性动力学分析

    Institute of Scientific and Technical Information of China (English)

    张清华; 张宪民

    2012-01-01

    采用有限元法对柔性连杆进行离散,运用浮动坐标系、拉格朗日方程建立了平面3-RRR和3-PRR柔性并联机器人的弹性动力学模型,该模型考虑了关节、动平台的集中质量和集中转动惯量,以及刚体运动的科式力和离心力.基于所建立的弹性动力学模型,比较了两系统的动力学特性,包括系统的固有频率、动平台的弹性位移和弹性转角、各柔性连杆的最大应力.结果表明:在参数一致的情况下,平面3-RRR机器人的动力学性能优于3-PRR机器人.文中结论可为平面完全3自由度柔性并联机器人的选型提供理论依据.%In this paper, first, a flexible link is transformed into several discrete beam elements by means of the finite element method. Then, the elastodynamic models of planar 3-RRR and 3-PRR flexible parallel robots are established based on the floating coordinate system and the Lagrange equation, in which the lumped mass and the lumped moment of inertia of each joint and the moving platform, along with the Coriolis inertia forces and the centrifugal forces of rigid motion, are taken into consideration. With these models, the dynamic characteristics of the two above-mentioned robot systems, including the natural frequency, the elastic displacement and angle of the moving platform as well as the maximum stress of each flexible link, are compared. The results indicate that the dynamic performance of planer 3-RRR robot is superior to that of 3-PRR robot with the same parameters. The findings build up a theoretical foundation for the type selection of planar full 3-DOF flexible parallel robots.

  20. Health implications of radiological terrorism: Perspectives from Israel

    Directory of Open Access Journals (Sweden)

    Hagby Moti

    2009-01-01

    Full Text Available September 11 th events taught us, members of the medical community, that we need to prepared for the worst. Nuclear terror is no longer science fiction. Radiological weapons of mass terror come in three flavors: The first one is nuclear. Since 1992, there have been six known cases of highly enriched uranium or plutonium being intercepted by authorities as it passed in or out of the former Soviet Union. Constructing a nuclear fission weapon requires high-level expertise, substantial facilities, and lots of money. All three of which would be difficult, although not impossible, for a terrorist group to pull off without state support. However, terrorists could carry out potential mass destruction without sophisticated weaponry by targeting nuclear facilities using conventional bombs or hijacked aircrafts. Terror attacks could also carry out mass panic and radioactive contamination of people and environment by dispersal of radioactive materials with or without the use of conventional explosive devices. Most medical and para-medical personnel are not familiar with CBRN terror and radiation casualties. To lessen the impact of those potential attacks and provide care for the greatest number of potential survivors, the community as a whole - and the medical community in particular - must acquire the knowledge of the various signs and symptoms of exposure to irradiation and radioactive contamination as well as have a planned response once such an attack has occurred. Based on knowledge of radiation hazards, medical emergency planers should analyze the risks of each scenario, offer feasible solutions and translate them into internationally accepted plans that would be simple to carry out once such an attack took place. The planned response should be questioned and tested by drills. Those drills should check the triage, evacuation routes, decontamination posts, evacuation centers and receiving hospitals. It is crucial that the drill will consist of

  1. Effects of the technique of cryopreservation and dilution/centrifugation after thawing on the motility and vitality of spermatozoa of oligoasthenozoospermic men

    Directory of Open Access Journals (Sweden)

    Esteves Sandro C.

    2003-01-01

    Full Text Available OBJECTIVE: Comparing in human semen samples with low initial quality, the effects of 2 techniques of cryopreservation and dilution/centrifugation after thawing on the spermatic motility and vitality. MATERIALS AND METHODS: Semen samples from 15 oligo and/or asthenozoospermic individuals assisted in the infertility sector of a tertiary hospital were obtained through masturbation. The samples were divided into 2 portions of equal volume, and diluted (1:1; v/v with the cryoprotector containing glycerol (Test yolk buffer. One portion was frozen through the technique of liquid nitrogen vapor with static phases (group I - GI, while the other was frozen through a programmable biological freezer with linear speed (Planer, Kryo 10, series III (group II - GII. The following parameters were assessed before freezing and after thawing: percentage of spermatozoa with progressive motility (Prog% and percentage of live spermatozoa (Vit%. After defrosting, Prog% was assessed before and after removal of cryoprotector diluent, in different time intervals (zero, 3 h, and 24 h. The statistical analysis has been accomplished by using the non-parametric tests of Wilcoxon and Friedman. RESULTS: There was significant reduction of Prog% and Vit% from before freezing to after defrosting in both groups, I and II (p < 0.001. Values of Prog% and Vit% were not statistically different between groups, after thawing. It has been observed a significant reduction in Prog% among portions frozen with the automated technique after dilution and centrifugation for removal of cryoprotector (p = 0.006. After cryoprotector removal, Prog% has been kept unaltered, in both groups, during the first 3 hours of incubation, although being superior in group I (p = 0,04. There was a significant decrease in Prog% after 24 hours of incubation, in both groups (p < 0,01. CONCLUSION: For human semen samples with low initial quality, freezing through vapor technique or through the automated technique

  2. Inverse method for effects characterization from ultrasonic b-scan images; Caracterisation des defauts par une methode d'inversion lors d'un controle ultrasonore. Application au controle des defauts en paroi externe

    Energy Technology Data Exchange (ETDEWEB)

    Faur, M. [Paris-11 Univ., 91 - Orsay (France)

    1999-02-01

    In service inspections of French nuclear pressure water reactor vessels are carried out automatically in complete immersion from the inside by means of ultrasonic focused probes working in the pulse echo mode. Concern has been expressed about the capabilities of performing non destructive evaluation of the Outer Surface Defects (OSD), i.e. defects located in the vicinity of the outer surface of the inspected components. OSD are insonified by both a direct field that passes through the inner surface (water/steel) of the component containing the defect and a secondary field reflected from the outer surface. Consequently, the Bscan images, containing the signatures of such defects, are complicated and their interpretation is a difficult task. This work deals with extraction of the maximum available information for characterizing OSD from ultrasonic Bscan images. Our main objectives are to obtain the type of OSD and their geometric parameters by means of two specific inverse methods. The first method is used for the identification of the geometrical parameters of the equivalent planar OSD from segmented Bscan images. Ultrasonic equivalent defect sizing model-based methods may be used to size a defect in a material by obtaining a best-fit simple equivalent shape that matches the ultrasonic observed data. We illustrate the application of such an equivalent sizing OSD method that is based on a simplified direct model. The major drawback of this identification method, as used to date, is that only a part of the useful information contained into original Bscan image, i.e. segmented Bscan image, is used for defect characterization. Moreover, it requires the availability of defect classification information (i.e. if the defect is volumetric or planer, e. g. a crack or a lack of fusion), which, generally, may be as difficult to obtain as the defect parameters themselves. Therefore, we propose a parameter estimation method for extracting complementary information on the defect

  3. ETA-BEMS - Development of testing procedures for inspection of building energy management systems; ETA-BEMS - Entwicklung von Testprozeduren zur Abnahme von Building-Energy-Management-Systemen. Endbericht

    Energy Technology Data Exchange (ETDEWEB)

    Bach, H.; Grob, R.F.

    2000-07-01

    Based on the investigations of project VITE-BEMS, a computer-assisted method for commissioning and acceptance testing of complex digital building control systems is presented. Tests are classified as either open-loop or closed-loop tests. A test stand was constructed in which the control systems to be tested were connected to a building and facility simulation system in order to model the behaviour of the real facility for which the control system is intended. The models were adapted and optimized with a view to simplicity and easy convertibility. [German] Aufbauend auf dem bereits bestehenden Lebenszyklusansatz fuer die Simulation und den Arbeiten, die im Projekt VITE-BEMS /6/ durchgefuehrt wurden, wird eine computergestuetzte Vorgehensweise fuer die Inbetriebnahme und die Abnahme von komplexen digitalen Regelsystemen im Bereich der Gebaeude- und RLT-Technik vorgestellt. Nach einer kritischen Betrachtung der Abnahmeprozesse in der gaengigen Praxis, werden hierfuer zunaechst Testprozeduren entwickelt. Diese Testprozeduren fuer die Inbetriebnahme und Abnahme von digitalen Regelungssysteme koennen unterteilt werden in Tests, bei denen das jeweilige Regelungssystem mit einer virtuellen heiz- und raumlufttechnischen Anlage in Wechselwirkung steht (Closed-Loop-Tests) und solchen, bei denen Regelfunktionen ohne eine direkte Rueckkopplung zur zu regelnden Anlage ueberprueft werden (Open-Loop-Tests). Durch diese unterschiedlichen Prozeduren wird eine systematische Ueberpruefung der Regelfunktionen, die vom Planer der jeweiligen Anlage spezifiziert und gefordert werden, ermoeglicht. Entsprechend den Anforderungen dieser Testprozeduren wird auf einem ebenfalls neu entwickelten Emulationsversuchsstand eine virtuelle Testumgebung aufgebaut, auf der die Prozeduren an den zu testenden Regelgeraeten ablaufen. In dieser Testumgebung wird das zu pruefende Regelungssystem an eine Anlagen- und Gebaeudesimulation angeschlossen. Mit der Simulation wird das Verhalten der realen Anlage

  4. Spherical grating based x-ray Talbot interferometry

    Energy Technology Data Exchange (ETDEWEB)

    Cong, Wenxiang, E-mail: congw@rpi.edu, E-mail: xiy2@rpi.edu, E-mail: wangg6@rpi.edu; Xi, Yan, E-mail: congw@rpi.edu, E-mail: xiy2@rpi.edu, E-mail: wangg6@rpi.edu; Wang, Ge, E-mail: congw@rpi.edu, E-mail: xiy2@rpi.edu, E-mail: wangg6@rpi.edu [Biomedical Imaging Center, Rensselaer Polytechnic Institute, Troy, New York 12180 (United States)

    2015-11-15

    Purpose: Grating interferometry is a state-of-the-art x-ray imaging approach, which can acquire information on x-ray attenuation, phase shift, and small-angle scattering simultaneously. Phase-contrast imaging and dark-field imaging are very sensitive to microstructural variation and offers superior contrast resolution for biological soft tissues. However, a common x-ray tube is a point-like source. As a result, the popular planar grating imaging configuration seriously restricts the flux of photons and decreases the visibility of signals, yielding a limited field of view. The purpose of this study is to extend the planar x-ray grating imaging theory and methods to a spherical grating scheme for a wider range of preclinical and clinical applications. Methods: A spherical grating matches the wave front of a point x-ray source very well, allowing the perpendicular incidence of x-rays on the grating to achieve a higher visibility over a larger field of view than the planer grating counterpart. A theoretical analysis of the Talbot effect for spherical grating imaging is proposed to establish a basic foundation for x-ray spherical gratings interferometry. An efficient method of spherical grating imaging is also presented to extract attenuation, differential phase, and dark-field images in the x-ray spherical grating interferometer. Results: Talbot self-imaging with spherical gratings is analyzed based on the Rayleigh–Sommerfeld diffraction formula, featuring a periodic angular distribution in a polar coordinate system. The Talbot distance is derived to reveal the Talbot self-imaging pattern. Numerical simulation results show the self-imaging phenomenon of a spherical grating interferometer, which is in agreement with the theoretical prediction. Conclusions: X-ray Talbot interferometry with spherical gratings has a significant practical promise. Relative to planar grating imaging, spherical grating based x-ray Talbot interferometry has a larger field of view and

  5. Photovoltaic systems. A guide for electricians, roofers, projecting engineers and architects; Photovoltaische Anlagen. Leitfaden fuer Elektriker, Dachdecker, Fachplaner, Architekten und Bauherren

    Energy Technology Data Exchange (ETDEWEB)

    Haselhuhn, R.; Berger, F.; Hasenoehrl, G.; Morsch, R.; Quaschning, V.; Rauscher, S.; Seltmann, T.; Hartmann, U.

    2001-07-01

    Nachschlagewerk in die Hand zu geben, das all die oben genannten Aspekte ausfuehrlich behandelt. Der Leitfaden soll so alle Beteiligten in die Lage versetzen, Photovoltaikanlagen dem neuesten Stand der Technik entsprechend qualitaetsbewusst zu planen, zu installieren und in Betrieb zu nehmen. Schwerpunkte sind hierbei (1) Funktionsprinzipien, Aufbau, Eigenschaften und Kennwerte der Komponenten, Module und Wechselrichter (b) Vororttermin und Standortanalyse (c) Verschattungsanalyse (d) Optimale Planung, Dimensionierung und Auslegung (e) Simulationsprogramme (f) Installation, Inbetriebnahme, Fehlersuche und Wartung (g) Montagesysteme und Integrationsmoeglichkeiten (h) Foerderprogramme. Eine vollstaendige Uebersicht der auf dem Markt erhaeltichen Module, Wechselrichter und Montagesysteme erleichert dem Planer und Installateur die Vorauswahl von Komponenten. Der Leitfaden ist als Loseblattsammloung konzipiert, um die Anwendung und spaetere Aktualisierung sowie Erweiterung flexibel und einfach zu gestalten. (orig.)

  6. Health implications of radiological terrorism: Perspectives from Israel

    Science.gov (United States)

    Hagby, Moti; Goldberg, Avishay; Becker, Steven; Schwartz, Dagan; Bar-Dayan, Yaron

    2009-01-01

    September 11th events taught us, members of the medical community, that we need to prepared for the worst. Nuclear terror is no longer science fiction. Radiological weapons of mass terror come in three flavors: The first one is nuclear. Since 1992, there have been six known cases of highly enriched uranium or plutonium being intercepted by authorities as it passed in or out of the former Soviet Union. Constructing a nuclear fission weapon requires high-level expertise, substantial facilities, and lots of money. All three of which would be difficult, although not impossible, for a terrorist group to pull off without state support. However, terrorists could carry out potential mass destruction without sophisticated weaponry by targeting nuclear facilities using conventional bombs or hijacked aircrafts. Terror attacks could also carry out mass panic and radioactive contamination of people and environment by dispersal of radioactive materials with or without the use of conventional explosive devices. Most medical and para-medical personnel are not familiar with CBRN terror and radiation casualties. To lessen the impact of those potential attacks and provide care for the greatest number of potential survivors, the community as a whole – and the medical community in particular – must acquire the knowledge of the various signs and symptoms of exposure to irradiation and radioactive contamination as well as have a planned response once such an attack has occurred. Based on knowledge of radiation hazards, medical emergency planers should analyze the risks of each scenario, offer feasible solutions and translate them into internationally accepted plans that would be simple to carry out once such an attack took place. The planned response should be questioned and tested by drills. Those drills should check the triage, evacuation routes, decontamination posts, evacuation centers and receiving hospitals. It is crucial that the drill will consist of simulated casualties that

  7. 基于平纹组织模型的单色提花丝织物显像方法%Method of imaging jacquard silk fabric with single color based on plain weave model

    Institute of Scientific and Technical Information of China (English)

    鲁佳亮; 杨婷婷; 陈德超; 周乐君; 王霆; 张聿

    2012-01-01

    为表达一幅具体的绘画或其他具有灰度渐变效果的艺术作品,采用同面组织平纹,根据提花丝织物的单色显像原理,初步设计以1组平纹系列变化组织构建的单色显像提花丝织物组织模型.在此基础上,经过试织获得该平纹变化组织的实物,再通过实物图像的像素点灰度分析,将各平纹变化组织实物按明度的高低所形成的渐变效果进行排序,通过筛选建立起绘画等艺术作品中的灰度渐变层次与各平纹变化组织之间的对应关系.织造实验结果表明,基于平纹变化组织模型实现单色丝绸提花织物的显像可在提花丝织物上产生一种特殊的肌理效果,为丝织物带来全新的视觉.%In order to express a painting or other art works with gradual transition-grayscale effect, this paper, according to the principle of imaging jacquard silk fabric with single color, adopts a co-planer weave - plain weave, to preliminarily design a weave model for imaging jacquard silk fabric with single color, which was structured by a series of derivative plain weaves. And, based on it, the fabric with derivative plain weaves was achieved through trial weaving of the jacquard fabric. Then, through analyzing the pixels' brightness in the fabric, the different fabrics with derivative plain weaves were sorted according to the glossiness with gradual transition effect, which was caused by different degrees of brightness. After that, through choosing the useful plain weaves from the weave model, the corresponding relationship between derivative plain weaves and varying degrees of brightness in art works like paintings was established. Finally, the weaving experiment indicates that the imaging of jacquard silk fabric based on the derivative plain weaves model can produce a special texture effect and bring about a new sense of vision of the jacquard silk fabric.

  8. Lake Urmia disaster- a classical example of the Chemical Time Bomb phenomenon

    Science.gov (United States)

    Prohić, Esad; Prohić, Laila; Fajković, Hana

    2013-04-01

    The last years, even decades, decline of the Lake Urmia, in the West Azerbijan province of I.R. Iran, has been the main environmental concern not only for Iran but also for neighbouring countries, and, as a world heritatage, also the part of international environmental problem. The environmental scientists, planers, politicians, decision-makers of all kinds, has been faced also with challenge of the lake revival. Lake Urmia si a very complex ecosystem spreading far more then the lake itself. Together with the lake water body, other surrounding environmental compartments, such as, air, soil (sediments) and groundwater, are also affected with the change happening in the lake. The environmental parameters to be studied, whenever some environmental change happens to occur, are physical and physicochemical, chemical and biological parameters, respectively. By reviewing the literature dealing with the Lake Urmia case, one can find studies of mostly physical and topographic parameters (area of the lake) together with some physicochemical parameters such as salinity, water temperature, oxygene content. The special attention has also been given to the lost of the life in the lake, both fauna and flora, where the main attention has been given to the dissapearrances of special brackish shrimp Artemia urmiana. For our opinion, ar least not the same attention has been given to the chemical changes specially of chemistry of the neighbouring soils which, not so long ago, were fertile agricultural soils. Due to the capacity of soils and sediments to store and immobilize toxic chemicals in so-called "chemical sinks," direct effects of pollution may not be directly manifested. This positive function of soils and sediments does not guarantee, however, that the chemicals are safely stored forever. Factors influencing the storage capacity of soils and sediments or the bioavailability of the stored chemical can change and indirectly cause sudden and often unexpected mobilization of

  9. Reindeer husbandry and local planning

    Directory of Open Access Journals (Sweden)

    Lars P. Niia

    1986-06-01

    Full Text Available A central theme in the reindeer husbandry is the conflicts between this and other economic interests as tourism, community development etc. in connection with the utilization of common territory. A retrospective glance will show that this is an old problem and not a new phenomenon. The Nordic Sami Institute has carried out a research project with the following objectives: 1.to give an account of the terms of planning for the reindeer husbandry, 2.to find out how the Såmi (Lapp community's and so the reindeer husbandry's interests are taken into account in local planning. 3.find ways for how the reindeer husbandry's use of land can be described. 4.give suggestions as to how the interests of the Sami community can better be taken into account or how it can increase its influence in relation to planning. The suggestions based upon the results from the research project are: —that the Sami community aquire competence by preparing itself for the changes in its environment. —that it builds up its own organization. —that it aquires a more noticeable influence in community planning and decision making. This project and earlier experiencies have shown that the way of influencing e.g. by land-use-planning is weak and unreliable today.Renskötsel och kommunal planering.Abstract in Swedish / Sammandrag: Ett centralt tema i renskotselsammanhang ar konflikterna mellan renskotsel och andra ekonomiska intressen som turism, samhållsutbyggnad etc. vid utnyttjande av gemensamma arealer. En historisk tillbakablick visar att denna problematik inte på något sått år någon ny foreteelse utan ett gammalt tema med variationer i tid och rum. I ett forskningsprojekt vid Sami Instituhtta har en studie genomforts med syftet att: 1.soka beskriva planeringsforutsåttningarna for renskotseln. 2. soka forklara hur renskotselns intressen tas tillvara i den kommunala fysiska planeringen. 3. finna former for hur renskotselns markanvåndning kan beskrivas. 4. att l

  10. 替牙期上颌埋伏中切牙正畸疗效的锥形束CT观察%Root and alveolar bone status of maxillary labial inverted impacted incisor in mixed dentition after orthodontic treatment

    Institute of Scientific and Technical Information of China (English)

    孙超凡; 孙浩; 郑志伟; 陈怡; 陈梦铮; 胡荣党

    2012-01-01

    Objective To study the alveolar bone surrounding situation and the length of the root of the maxillary labial inverted impacted incisor in mixed dentition after orthodontic treatment. Methods Fourteen cases with maxillary labial inverted impacted incisor in mixed dentition were collected. Modified Nance arch and conventional appliance were used. Cone-bean CT(CBCT) was taken after the treatment.Simplant13.0 three-dimensional reconstruction and multi-planer reconstruction(MPR) method were used to observe the labial and lingual alveolar bone crest morphology,besides,the labial and lingual length from the alveolar bone crest to cemento-enamel junction(CEJ) of the impacted incisor and the homonym tooth after treatment,along with their root length and their labial and lingual length ratio of the root surrounded by the alveolar bone to the total root length were measured.The idependent samples t-test were used to analyze the variable differences.Results The labial and lingual alveolar bone of fourteen cases crest of the diseased tooth after treatment presented general symmetry U shape from qualitative observation through the threedimensional reconstruction.The labial and the lingual length of the diseased incisor from alveolar bone crest to CEJ[ (2.47 ± 1.35) and ( 1.47 ± 0.84) mm] was significant increased than those of the homonym incisor[ ( 1.03 ± 0.35) and (0.90 ± 0.37 )mm ] ( P < 0.05 ) ; the length of the diseased incisor's posttreatment root [ (9.82 ± 2.82) mm ] was no statistically significant decreased than that of the homonym incisor root[ ( 10.28 ± 1.38) mm,P =0.59] ; the labial and the lingual length ratio of the impacted tooth's root surrounded by the alveolar bone to the total root length[ (72.83 ± 17.16)% and (85.32 ±5.98)% ]was statistically significant decrease than those of homonym teeth [ ( 89.66 ± 3.98 ) % and ( 90.84 ±4.61 )% ] (P < 0.05 ). Conclusions The diseased tooth's root had gotten enough length after the treatment

  11. Modelling earthquake ruptures with dynamic off-fault damage

    Science.gov (United States)

    Okubo, Kurama; Bhat, Harsha S.; Klinger, Yann; Rougier, Esteban

    2017-04-01

    Earthquake rupture modelling has been developed for producing scenario earthquakes. This includes understanding the source mechanisms and estimating far-field ground motion with given a priori constraints like fault geometry, constitutive law of the medium and friction law operating on the fault. It is necessary to consider all of the above complexities of a fault systems to conduct realistic earthquake rupture modelling. In addition to the complexity of the fault geometry in nature, coseismic off-fault damage, which is observed by a variety of geological and seismological methods, plays a considerable role on the resultant ground motion and its spectrum compared to a model with simple planer fault surrounded by purely elastic media. Ideally all of these complexities should be considered in earthquake modelling. State of the art techniques developed so far, however, cannot treat all of them simultaneously due to a variety of computational restrictions. Therefore, we adopt the combined finite-discrete element method (FDEM), which can effectively deal with pre-existing complex fault geometry such as fault branches and kinks and can describe coseismic off-fault damage generated during the dynamic rupture. The advantage of FDEM is that it can handle a wide range of length scales, from metric to kilometric scale, corresponding to the off-fault damage and complex fault geometry respectively. We used the FDEM-based software tool called HOSSedu (Hybrid Optimization Software Suite - Educational Version) for the earthquake rupture modelling, which was developed by Los Alamos National Laboratory. We firstly conducted the cross-validation of this new methodology against other conventional numerical schemes such as the finite difference method (FDM), the spectral element method (SEM) and the boundary integral equation method (BIEM), to evaluate the accuracy with various element sizes and artificial viscous damping values. We demonstrate the capability of the FDEM tool for

  12. 采煤工作面轻型架间挡矸装置研究%Research on lightweight device for blocking gangue between hydraulic supports in steeply inclined coal face

    Institute of Scientific and Technical Information of China (English)

    曹树刚; 李毅; 雷才国; 刘富安

    2013-01-01

    The device for blocking gangue between hydralic supports is the important guarantee to avoid the situation that coal and gangue slide down to hurt people and destroy equipment, when assigning fully-mechanized longwall face on the strike with true-inclined or false-inclined layout in the steeply inclined coal seam. In this paper, based on assive investigation and plan comparison, a light-weight device for blocking gangue with metal net and four-door combination has been developed. The device increases the adaptability to the changes of dip angle and mining height of coal seam, and can change the advance directions of working face, by using the sliding system of ball bearing type, symmetric design and changeable size of doorframe. The numerical simulation results show that the device can meet the needs to prevent coal and gangue, the sliding system composed of guide rails, rollers and limit rails presents high flexibility, and can avoid the problem that the device for blocking gangue may fail to work under hydraulic control, after adoring manual control to close sliding door. In addition, when using metal-net frame structure in the hanging door and sliding door, can reduce the local ventilation resistance of working face, and is helpful to the ventilation stability of working face. Field tests indicate that the weight of light-weight device for blocking gangue between supports is reduced two thirds of that of the previous planer device for blocking gangue, and it is convenient to transport, install and maintain.%在大倾角、急斜煤层真倾斜或伪倾斜布置走向长壁综合机械化开采工作面,架间挡矸装置是防止顺工作面煤、矸飞窜伤人和毁坏设备的重要保证.通过大量的调查研究和方案比较,研制了带金属网的四门组合的轻型架间挡矸装置.该装置采用滚珠式滑动系统、对称式设计和变化门框尺寸,增大了对煤层倾角变化和采高变化的适应性,能满足工作面推进方向换

  13. Thermodynamics at work - on the limits and potentials of biogeochemical processes

    Science.gov (United States)

    Peiffer, Stefan

    2017-04-01

    on the Fe and S side (Peiffer & Wan, 2016; Wan et al, 2014) which will allow for the occurrence of cryptic sulphur cycles, i. e. high turnover of sulphide and sulfate without the appearance of dissolved sulphide species. References Beer, J; Blodau, C (2007): Transport and thermodynamics constrain belowground carbon turover in a northern peatland, Geochim. Cosmochim. Acta, 71, 2989-3002 Blodau, C. (2002). "Carbon cycling in peatlands: A review of processes and controls." Environmental Reviews 10(2): 111-134. Blodau, C; Hoffmann, S; Peine, A; Peiffer, S (1998): Iron and sulfate reduction in the sediments of acid mine lake 116 (Brandenburg, Germany): Rates and geochemical evaluation, Water, Air and Soil Pollution, 108, 249-270 Peiffer, S., Wan M. (2016) Reductive Dissolution and Reactivity of Ferric (Hydr)oxides, in Faivre, D., Iron Oxides: From Nature to Applications, Wiley-VCH, chapter 3, 29-51 Peine, A; Küsel, K; Tritschler, A; Peiffer, S (2000): Electron flow in an iron-rich acidic sedimant - evidence for an acidity-driven iron cycle, Limnol. Oceanogr., 45(5), 1077-1087 Stumm, W.; Morgan, J. J. (1996): Aquatic Chemistry, Wiley Wan, M., Shchukarev, A., Lohmayer, R., Planer-Friedrich, B., Peiffer, S. (2014) Occurrence of surface polysulfides during the interaction between ferric (hydr)oxides and aqueous sulfide. Environmental Science and Technology, 48, 5076-5084

  14. Molecular modelling of betalactamic antibiotic Modelación molecular de antibióticos betalactámicos

    Directory of Open Access Journals (Sweden)

    Grettel Díaz Ramón

    2010-02-01

    Full Text Available Background: The antibacterial properties of a compound are the result of its molecular structure. To establish the structural and electronic characteristics makes possible to understand the mechanisms of its action and becomes paramount for the rational design new drugs. Objective: To model some of the molecular properties of betalactamic antibiotics and inhibitors of the betalactamases and to relate them with their pharmacological actions. Method: The molecular structures were optimized with PM3• semiempiric calculus. The structure of the betalactamic ring in the different compounds was compared. The molecular properties were calculated according to the Density Functional Theory at a B3LYP/6-31G(d level. The density of the atomic charges and the frontier orbitals were analyzed. Results There are variations in the calculated properties that make possible to define two groups of compounds: one for the monobactams and the inhibitors of the betalactamases, with less planarity in the ring and less reactivity and another one with the penicillins, cephalosporins and carbapenems, planer, more structurally stable and reactive. Conclusions: The modelled molecular properties of the betalactamic antibiotics and inhibitors of the betalactamases show agreement with its pharmacological action.Fundamento: las propiedades antibacterianas de un compuesto son consecuencia de su estructura molecular. Establecer las características estructurales y electrónicas permite comprender los mecanismos de su acción y constituye premisa en el diseño racional de nuevos fármacos. Objetivo: realizar la modelación de las estructuras moleculares y propiedades electrónicas relevantes para el comportamiento químico de antibióticos betalactámicos e inhibidores de las betalactamasas. Métodos: se realizó un estudio teórico empleando m

  15. Methodological study of CBCT 3D cephalometric applied in craniofacial growth%锥形束CT三维头影测量在颅面部生长发育中的法学研究

    Institute of Scientific and Technical Information of China (English)

    阳福; 秦化祥; 胡荣党

    2012-01-01

    目的:探讨锥形束CT (cone beam computer tomography,CBCT)三维测量在颅面部生长发育中的应用和优点.方法:14例研究对象分别拍摄普通X线头影片(包括头颅侧位片、正位片)和CBCT两种图像.CBCT图像用Simplant Pro 13.0软件多平面重建方法(multi-planer reconstruction,MPR法,即轴向、矢状向、冠状向联合定点)定点和三维头影测量,普通X线片(头颅侧位片、正位片)采用winceph7.0软件进行头影测量,测量两种图像中同一名称的线性和角度指标,共31项,测量在CBCT能测量而在二维图像中无法测量的项目13项.所有对象均测量两次,测量时间间隔1周,用配对t检验分析普通X线头影片(头颅侧位片、正位片)测量和CBCT三维测量之间的差异.结果:CBCT三维图像和普通二维X线片同一名称31个项目的测量值比较差异均有统计学意义,得出了13个只能在三维图像测量项目的平均值.结论:CBCT三维头影测量与普通X线头影测量结果有差异,CBCT图像是三维立体影像,能真实地反映颅面部的解剖结构,而二维图像由于放大、重叠等原因不能完全准确地反映颅颌面结构.故CBCT是研究颅面部生长发育一种较好的工具.%Objective: To evaluate the advantage of CBCT applied in the study of craniofacial growth. Methods: CBCT scans and conventional lateral, frontal cephalometric radiographs were made in fourteen patients. Simplant Pro 13.0 was used to identify landmarks in the sagittal, coronal, and axial slices on 3D images. Standard cephalometric software winceph 7.0 was used to identify landmarks on 2D images. Thirty-one linear and angular cephalometric measurements were registered on the lateral, frontal cephalogram and compared to the same measurements on the 3D CBCT scans. Thirteen linear and angular cephalometric measurements were registered only in 3D scans, the same operator traced 3D models and lateral, frontal cephalogram two times with a time

  16. Three essays on regulated markets. Renewable energies, hospital competition and health insurance

    Energy Technology Data Exchange (ETDEWEB)

    Unfried, Matthias

    2012-11-15

    only private hospitals exist. Considering the German regulatory framework it is shown that a non-profit hospital disciplines profit maximizing ones and hence, ensures a higher treatment quality and a lower treatment fee. Furthermore, it is shown that the degree of market coverage depends on the costs of quality provision and that the existence of non-profit hospitals, ceteris paribus, ensures a higher degree of market coverage. Last, it is analyzed how the market outcome is influenced by the type of welfare function. It is distinguished between two welfare criteria: first, a utilitarian welfare function and second, a Rawlsian type of welfare function. It is shown that the welfare criterion should be chosen according to the market size. The fourth chapter examines the health insurance market for outpatient care. In several health systems, insurees of a certain insurance company have to consult physicians which are affiliated to the same insurance company. If this is the case, the insurance market features characteristics of a two-sided market where the insurance company competes on one market sides for insurees and for physicians on another market side. Once the participation decision of both sides has been made, however, the physicians of one insurance company compete for insurees of the same insurance. This intra-platform competition and its effect on the two-sided market is analyzed in this chapter. It is shown that intra-platform competition induces negative network effects, i.e., a higher number of physicians reduces the number of insurees. Moreover, the number of physicians is reduced by the insurance company if the probability of illness increases. Last, the market is compared to a market where a social planer regulates insurance fees. It is shown that regulation is not necessary since the unregulated market already results in a second-best solution.

  17. La « brutalisation » de la guerre. Des guerres d’Italie aux guerres de Religion

    Directory of Open Access Journals (Sweden)

    Jean-Louis Fournel

    2005-04-01

    Full Text Available Jean-Louis Fournel, abordant la période des guerres d’Italie, tente de montrer comment ces nouvelles guerres modifient l’intensité et le rythme de la guerre guerroyée : la conscience d’une violence et d’une rapidité inédites fait planer une menace de mort sur les États eux-mêmes et la question de la guerre est dès lors placée au cœur de la pensée politique. Trois manifestations de ces « nouvelles » guerres marquent particulièrement les contemporains et autorisent l’analyste à évoquer ici une « brutalisation » ou un ensauvagement des conflits, bien avant la Première Guerre mondiale qui a fondé récemment le développement d’une telle problématique : les sacs de ville, la mise en coupe réglée des territoires conquis avec le développement d’une véritable guerre contre les civils et, enfin, l’augmentation exponentielle du nombre de morts durant les batailles (du fait entre autres des modifications dans l’armement et du nombre de soldats constituant les nouvelles armées « nationales ». S’ensuivent des tentatives d’une nouvelle « humanisation », très relative des conflits armés fondée sur un nouvel examen du jus in bello (par opposition à une quasi disparition de la question du jus ad bellum. Il est notable à cet égard que le lexique de la « barbarie » est très peu utilisé chez les chroniqueurs et historiens des guerres d’Italie alors même qu’il a une forte présence chez les historiens et témoins des guerres de Religion en France. On peut se poser la question de savoir s’il ne faudrait pas voir là une certaine « rechristianisation » du discours sur la guerre. De la sorte, cette « rechristianisation » d’une partie de la réflexion sur la violence de guerre, au croisement du déclin de l’idéologie chevaleresque, des réflexions philosophiques, théologiques ou juridiques nées des massacres commis par les conquistadores dans le « nouveau monde » (Cortez

  18. The Norwegian curriculum in history and historical thinking: a case study of three lower secondary schools

    Directory of Open Access Journals (Sweden)

    Lisbeth Bergum Johanson

    2015-03-01

    learn and work thoroughly with the concepts of historical thinking.Sammendrag I tråd med samfunnsendringer og endringer i skolen har historiedidaktikken og læreplanene i historie blitt endret for å gjøre historiefaget mer relevant for elevene i dag. For å utvikle elevenes kritiske tenkning og historieforståelse bør elevene tilegne seg både ”vite at- kunnskap” og ”vite hvordan - kunnskap”. En måte å fremme historieforståelse på, er gjennom introduksjon av historisk tenkning. Studier utført i klasserommet viser imidlertid at historieundervisningen fortsatt er forholdsvis tradisjonell i den forstand at lærebøker i historie anvendes ukritisk, uten å problematisere hvordan historie konstrueres eller hvorfor historie er viktig både i dag og for fremtida. Denne artikkelen ser på hvorvidt og hvordan historisk tenkning fremmes og anvendes i tre ulike skoler på ungdomstrinnet. Lærebøker i historie, ukeplaner, halvårsplaner, prøver og oppgaver danner hovedgrunnlaget for empirien i denne undersøkelsen. Funnene i undersøkelsen viser at historisk tenkning er lite tydelig i lærebøker, planer eller i prøver og oppgaver. Samtidig ser det ut til at det fokuseres mer på reproduksjon enn refleksjon i klasserommet, noe som vanskeliggjør historisk forståelse. Det foreslås derfor at både lærere og studenter arbeider mer grundig med historisk tenkning. Nøkkelord: Historiedidaktikk, historieforståelse, historisk tenkning, læreplaner

  19. 锰掺杂Sr2-xCaxNaNb5O15(x=0.05~0.35)无铅压电陶瓷微观结构与电学性能的研究%Microstructure, Electrical Properties of Mn-doped Sr2-xCaxNaNb5O15 (x=0.05-0.35) Lead Free Ceramics

    Institute of Scientific and Technical Information of China (English)

    范修军; 王越

    2011-01-01

    Lead-free piezoelectric ceramics Sr2-χCaχNaNb5O15+ywt%MnO2 (χ=0.05-0.35, y=0, 0.3,0.5) (SCNN-M) were fabricated by conventional solid-state processes, and their microstructure, phase transformation, dielectric, piezoelectric and ferroelectric properties were investigated systematically. Our results reveal that Ca2+ ions have entered into the Sr2NaNb5O15 lattices to form a solid solution and the doping of MnO2 is effective in promoting the densification of the ceramics. With the MnO2 doping, all the ceramics can be well sintered at a relative low temperature and exhibit a dense and pure tungsten-bronze structure. The addition of Caz+ has no remarkable effect on the microstructure and MnO2 caused a significant promoted grain growth. Compared with the pure SCNN ceramics, the dielectric and piezoelectric properties of SCNN-M ceramics were greatly enhanced. At room temperature, the SCNN-M ceramics with χ=0.5 and y=0.5 exhibits the optimum properties: piezoelectric coefficient d33=190pC/N, mechanical quality factor Qm=1455, planer electromechanical coupling factors Kp=l3.4%, thickness electromechanical coupling factors Kt=36.5%, dielectric constant 5=2123, loss tangent tanδ=0.038, remanent polarization P^4.76μC/cm2, spontaneous polarization P8=9.36μC/cm2, coercive field Ec=12.68kV/cm, and curie temperature Tc=260℃. Therefore, the SCNN-M ceramics are a good candidate material for lead-free piezoelectric ceramics.%采用传统陶瓷制备工艺制备了Mn掺杂的钨青铜结构无铅压电陶瓷Sr2-xCaxNaNb5O15+ywt%MnO2 (x=0.05~0.35,y=0,0.3,0.5) (SCNN-M),并对SCNN-M陶瓷相组成、微观结构及介电、压电、铁电性能进行了研究.分析表明:Ca2+已进入Sr2NaNb5O15晶格之中形成固溶体;掺杂适量的锰,能够得到致密、单一的钨青铜结构陶瓷,有效降低烧结温度,促进晶粒长大,显著提高陶瓷的介电、压电、铁电性能.当x=0.05,添加0.5wt%的MnO2时,陶瓷具有较好的介电、压电

  20. Effect of MnO2 Doping on the Structure and Electrical Properties of Sr1.95 Ca0.05NaNb5O15 Lead Free Piezoelectric Ceramics%MnO2掺杂对Sr1.95Ca0.05NaNb5O15无铅压电陶瓷微观结构及电学性能的影响

    Institute of Scientific and Technical Information of China (English)

    范修军; 王越

    2011-01-01

    采用固相反应法制备了MnO2掺杂Sr.95Ca0.05.osNaNbsO15+y wt%MnO2(SCNNM)无铅压电陶瓷.研究了MnO2掺杂对SCNNM陶瓷显微结构及电学性能的影响.结果表明:当y≤0.7时,SCNNM陶瓷为单一的四方钨青铜结构,当y≥1.0时有第二相生成;少量MnO2掺杂能有效降低烧结温度,促进晶粒长大,显著提高SCNNM陶瓷的介电、压电性能,降低矫顽场和居里温度,当y>0.7时,陶瓷烧结恶化,性能降低.当y=0.5时,SCNNM陶瓷具有较好的介电、压电和铁电性能:介电系数εr=2123,介电损耗tanδ=0.038,平面伸缩振动机电耦合系数Kp=13.4%,厚度伸缩振动机电耦合系数K1=36.5%,矫顽场E.=12.68 kV/cm,剩余极化强度Pr=4.76 μC/cm2,压电系数d33=190 pC/N,机械品质引因数Qm=1455,居里温度Tc=260℃.%Piezoelectric ceramics Sr1.95 Ca0.05 NaNb5 O15 + y wt% MnO2( SCNNM ) with y ranging from 0 to 1.5 were prepared by solid-state reaction method. The results indicated that the calcined SCNNM ceramics retain a single phase of tetragonal tungsten-bronze structure with y ≤ 0.7. When y ≥ 1.0, a secondary phase was observed. The addition of a little MnO2 could decrease the sintering temperature, promote grain growth. The dielectric, piezoelectric and ferroelectric properties of the SCNNM ceramics significantly increased. At room temperature, the SCNNM ceramic with y = 0.5 exhibits the optimum properties: piezoelectric coefficient d33 = 190 pC/N, mechanical quality factor Qm = 1455, planer and thickness electromechanical coupling factors Kp = 13.4% and Kt = 36.5%, dielectric constant εr = 2123, loss tangent tanδ = 0.038, remanent polarization Pr = 4.76 μC/cm2, coercive field Ec = 12.68 kV/cm, and curie temperature Tc =260 ℃.

  1. Clinical application of little finger ulnar palmar artery perforator flaps%小指尺掌侧动脉穿支皮瓣的临床应用

    Institute of Scientific and Technical Information of China (English)

    林涧; 郑和平; 陆骅; 张天浩; 王之江; 张豪杰

    2014-01-01

    Objective To investigate the feasibility of repairing soft-tissue defects of the fifth phalange and the back of hand with ulnar palmar artery perforator flaps from the little finger.Methods Based on anatomic dissection,the fifth phalange ulnar palmar artery perforator flaps were created and transferred to repair soft-tissue defects at the little finger and the back of hand in 15 cases.Types of injury were stamping injury in 5 cases,planer injury in 4 cases,mechanical crash injury in 3 cases,blast injury in 2 cases,and cicatrical contracture following electric burn in 1 case.Injury involved in the palmar aspect near the middle segment of fifth phalange in 4 cases,dorsal aspect near the middle segment of fifth phalange in 6 cases,ulnar mesiodistal of the back of hand in 3 cases,and distal ulnar palmar aspect of hands in 2 cases.There were 6 patients wounded in left hands and 9 patients wounded in right hands.Results All flaps survived and all wounds healed by first intention.At the follow-up of 2-18 months,the flaps resurfaced the soft-tissue defects with good color and texture match and the maintenance of contour and function of donor and recipient sites were satisfactory.Conclusion The fifth phalange ulnar palmar artery perforator flap,as it has advantages of constant perforator vessels,rich blood supply and good texture and can be operated safely and easily,is considered an ideal treatment choice in repairing softtissue defects of the fifth phalange and the back of hand.%目的 探讨应用小指尺掌侧动脉穿支皮瓣修复手背、小指皮肤缺损的可行性.方法 根据术式解剖学基础,在手背尺侧设计并切取小指尺掌侧动脉穿支皮瓣移位修复手背、小指创面15例.致伤原因:冲床冲压伤5例,电刨伤4例,机器压砸伤3例,爆炸伤2例,电烧伤后瘢痕挛缩1例.损伤部位:小指近中节掌侧皮肤缺损4例,小指近中节背侧皮肤缺损6例,手背中远段尺侧皮肤缺损3例,

  2. Nondestructive Image Detection of Cracks for a Nuclear Fuel Plate by Using Active Thermal Phase

    Energy Technology Data Exchange (ETDEWEB)

    Park, Nak Kyu; Park, Seung Kyu; Baik, Sung Hoon; Lee, Yoon Sang; Cha, Byung Heon [Korea Atomic Energy Research Institute, Daejeon (Korea, Republic of); Kang, Young June [Chonbuk National University, Jeonju (Korea, Republic of)

    2012-05-15

    Nondestructive crack detection is a key process for the safety insurance of the nuclear fuel plates which are widely used in a nuclear research reactor. Among nondestructive detection techniques, X-ray inspection technique and ultrasonic inspection technique using high frequency are widely used to detect internal cracks of a nuclear fuel plate at present. Though X-ray inspection is fast and efficient technique by providing a crack image for whole specimen area, this technique hardly provides the delaminated crack information which should be detected. Ultrasonic inspection is also an efficient tool to detect internal cracks of materials. High frequency ultrasound based on the piezoelectric transducers is usually used to detect cracks of a nuclear fuel plate. Though it is useful technique, the inspection should be carried out by an immersion test in a water-tank and its signal is complex and it is time consuming technique because the inspection is scanned point by point in sequence for whole inspection area. A commercial scanning ultrasonic system using high frequency is usually adopted to detect cracks. An alternative inspection technique to overcome the disadvantages of the high frequency ultrasonic inspection technique is needed. Especially, nondestructive imaging techniques of the internal cracks will be useful because it can be easily used in the field. One of efficient nondestructive testing techniques is infrared thermo-graphic technique. Infrared thermographic is a contactless optical imaging technique by detecting the invisible infrared radiation. Pulsed and lock-in thermography are commonly used in thermo-graphic nondestructive evaluation techniques. The two techniques are distinctly different but are deployed in the inspection of similar components. In general, these techniques are suitable for the detection of shallow planer defects, e.g. delamination in composites or adhesion defect in surface coatings. The surface of a specimen is instantaneously heated

  3. PEMBANGUNAN KAPAL PERIKANAN DI GALANGAN KAPAL TRADISIONAL KALIMANTAN SELATAN

    Directory of Open Access Journals (Sweden)

    Rusmilyansari Rusmilyansari

    2016-06-01

    in the traditional shipyard. The study was conducted by Survey. Research conducted shipyard Sewangi Barito Kuala district and village Pagaruyung Tanah Bumbu Regency South Kalimantan. The study was conducted in August through October 2013. Results showed that: ( 1 The level of technology used in the construction of the ship is still relatively low , the equipment used is still using non- electronic equipment ie axes, saws, chisels, pegs, hammer, machetes, bacci, measuring instruments, planers. Only the use of an electric drill workmanship.  The level of technology in the construction of timber ships has not been completed by the calculation of shipping architecture and ship design and construction drawings ; ( 2 type of wood used is Ulin wood, Alaban, Bengkirai, Bungur and Meranti which have a high degree of strength and resistant to attack by marine organisms; ( 3 Stages of development of traditional boats to large ships began with the manufacture of the hull, keel assembly to the deck and transom beam. As for the small boat begins with the manufacture of the vessel tree seedlings. The next stage is good for big ships and small ships are mounting Linggi bow and stern, leather installation vessel up to half the height of the ship, Installation joist left and right, galar installation, installation of ship skin entirely to sheer, sheer installation, flooring installation deck, pemakalan , rig manufacturing of large vessels and final are painting.

  4. Fair play i kroppsøvingsfaget i lys av aristotelisk dydsetikk

    Directory of Open Access Journals (Sweden)

    Ove Ronny Olsen Sæle

    2013-05-01

    Full Text Available Artikkelen ønsker å gi et konstruktivt bidrag til forståelsen og anvendelsen av fair play i en kroppsøvingsfaglig kontekst. Dette er et tema som er blitt aktualisert i og med at fair play er kommet inn som et sentralt element i kroppsøvingsfagets nye reviderte læreplan. Fair play omhandler regler, normer og verdier som skal gjelde ved idrettsutøvelse, og det er et etablert verdikonsept innenfor organisert idrettsliv og idrettsetisk forskning. I skolen, derimot, er fair play mindre kjent. Kroppsøvingsplanen hevder fair play omfatter aspekter ved idrettsspillet som å overholde regler, vise hverandre respekt og gjøre hverandre gode. Hva betyr så dette? Hva vil det si å gjøre hverandre gode? Rommer det bare en teknisk eller også en sosialetisk kvalitet? Dersom det siste er tilfelle, bør det diskuteres hvilke danningskvaliteter det så ligger i det å gjøre hverandre gode i faget, og om disse har noen tilknytningspunkt til Aristoteles' klassiske dyder om rettferdighet, måtehold, mot og klokskap. Dette er de sentrale spørsmålene artikkelen reiser og prøver å gi noen svar på. Artikkelen ser først på fair play i kroppsøvingsfagets planer, for deretter å gi begrepet en nærmere etymologisk og ideologisk-historisk avklaring, med utgangspunkt i begrepene «fair» og «play». Videre drøftes fair play i lys av de aristoteliske dydene, relatert til kroppsøvingsfaglig kontekst og diskurs.Nøkkelord: kroppsøving, fair play, idrett, lek og danningEnglish summary: Fair play in Physical Education in the light of Aristotelian virtue ethicsThe aim of this article is to give a constructive contribution to the understanding and the application of the concept of fair play in the Physical Education context. This is a topic that has come into focus since fair play has been introduced as a central element in the newest revision of the subject curriculum. Fair play concerns the rules, norms, and values that apply to sports activities, and

  5. Avaliação ergonômica do ambiente de trabalho em marcenarias no sul do Espírito Santo Ergonomic analysis in joinery workplaces in the south of Espírito Santo

    Directory of Open Access Journals (Sweden)

    Nilton Cesar Fiedler

    2010-10-01

    Full Text Available Esta pesquisa foi realizada em marcenarias do Sul do Espírito Santo, com o objetivo de avaliar os fatores do ambiente de trabalho. A coleta de dados foi feita de agosto de 2006 a julho de 2007, em três marcenarias, analisando-se as condições de clima, níveis de ruído, iluminância, vibração, gases, fuligens e poeira. Foi aplicado um questionário semiestruturado para avaliar as condições humanas e de saúde do trabalhador, a segurança e as condições gerais de trabalho. Os resultados indicaram que o Índice de Bulbo Úmido e Termômetro de Globo (IBUTG estavam de acordo com a Norma Regulamentadora n° 15 (atividade moderada, com o mínimo de 25,45 °C às 8 h e o máximo de 26,92 °C às 10 h. Os maiores níveis de ruído foram encontrados no traçador (94,79 dB(A, na tupia (88,9 dB(A, na serra circular (88,66 dB(A, na desempenadeira (88,35 dB(A e na desengrossadeira (88,01dB(A. A iluminância não estava de acordo com os mínimos necessários estabelecidos pela NBR 5413/92, com níveis variando de 304,41 a 1.301,19 lux. Através dos questionários, foi unânime o descontentamento dos marceneiros quanto aos riscos a que estão expostos.This research was carried out in joineries in the South of Espírito Santo to evaluate workplace conditions. Data was colleted in three different joineries from August of 2006 to July of 2007, analyzing climate, noise level, light conditions, vibration, gases, soot and dust at the workplace. A questionnaire was given to evaluate workers´ health conditions, safety and general conditions at work. The results showed that the Index of Humid Bulb and Globe Thermometer (IBUTG was in accordance with NR 15, with a minimum of 25.45°C at 08:00 a.m. and a maximum of 26.92°C at 10:00 a.m. The highest noise levels were found for the cutter (94.79 dB(A, shaper (88.9 dB(A, buzz saw (88.66 dB(A, smoother (88.35 dB(A and planer (88.01dB(A. Light conditions were not in accordance with NBR 5413/92, with levels varying

  6. Scanning tuneeling microscopy studies of fivefold surfaces of icosahedral Al-Pd-Mn quasicrystals and of thin silver films on those surfaces

    Energy Technology Data Exchange (ETDEWEB)

    Unal, Baris [Iowa State Univ., Ames, IA (United States)

    2008-01-01

    their top planes. Hence, we name them as Pd+(with Pd) and Pd-(without Pd). Based on their planer structure and the step height, it can be said that these two families can be viable surface terminations. However, besides the Pd content, these two sets differ in terms of relative densities of their top planes as well as the gap separating the layer from the nearest atomic plane. The experimental data and other arguments lead to the conclusion that the Pd- family is favored over the Pd+. This has an important implication on the interpretation of local motifs seen in the high resolution STM images. In other words, the dark stars are not formed by cut-Bergmans rather they are formed by cut-Mackays.

  7. Cryopreservation of tench, Tinca tinca, sperm: Sperm motility and hatching success of embryos.

    Science.gov (United States)

    Rodina, M; Gela, D; Kocour, M; Alavi, S M Hadi; Hulak, M; Linhart, O

    2007-03-15

    The aim of the present study was to elaborate cryopreservation methods for ex situ conservation of tench. Success of cryopreservation was tested during two series of experiments. The first set of experiments studied the effects of two types of cryoprotectants (DMSO and a combination of DMSO with propanediol at ratio 1:1) at concentrations of 8 and 10% and three different equilibration times in two different immobilization solutions (IS) (Kurokura 180 and Kurokura) before freezing (0.0, 2.0 and 4.0h after T(0)). The K4 cooling programme was used to freeze 1ml of cryoextended sperm using 1.8ml cryotubes. Main monitored parameter was hatching rate after using of cryopreserved sperm. The second set of experiments studied the volume effect of 0.5, 1 and 5ml straws and compared these with 1.8ml cryotubes as well as the effect of the cooling programme (K4 and L1). Following the results of the first study, a combination of DMSO and propanediol (ratio 1:1) at concentration of 10% was added to extended sperm in Kurokura 180 IS. Main monitored parameter was hatching rate after using cryopreserved sperm, supplementary parameters were sperm velocity and motility percentage assessed at 10s post-activation. Sperm was collected directly into IS and stored at 4 degrees C for 2.5h. Thereafter were sperm samples pooled, equlibred in IS (first set of experiments) or directly mixed with cryoprotectants (DMSO or a mixture of DMSO with propanediol at ratio 1:1) and transferred to 1.8ml cryotubes or straws (0.5, 1 and 5ml). Then the cryotubes/straws were directly transferred to pre-programmed PLANER Kryo 10 series III and cooled using two different cooling programmes including a slow cooling programme (a) named K4 (from +4 to -9 degrees C at a rate of 4 degrees Cmin(-1) and then from -9 to -80 degrees C at a rate of 11 degrees Cmin(-1)) and a rapid cooling programme (b) named L1 (directly from +4 to -80 degrees C at a rate of 20 degrees Cmin(-1)). Both slow (K4) and rapid (L1) cooled

  8. Multivariate clustering of reindeer herding districts in Sweden according to range prerequisites for reindeer husbandry

    Directory of Open Access Journals (Sweden)

    Henrik Lundqvist

    2009-01-01

    samebyar i tio grupper. Den största gruppen, som bestod av 14 samebyar, delades vidare in i 4 undergrupper. Klusteranalyser med 4 olika linkage-varianter användes till att gruppera samebyarna. Principalkomponentsanalys användes för att kartlägga undersökta variabler och de resulterande samebygruppernas karaktär. Samebygrupperna följde inte länsgränser och tre samebyar föll ut som enskilda grupper. Denna undersökning ger underlag för jämförelser mellan samebyar med beaktande av likheter och olikheter i fråga om produktivitet och funktionella särdrag istället för länsgränser och historik. Vi föreslår en ny administrativ indelning i sex områden som skulle kunna fungera som ett alternativt underlag för planering och beslut som rör produktionsaspekter i rennäringen. Resultaten ger också underlag för förutsägelser av förändringar i samebyars produktionsförutsättningar till följd av klimatförändringar.

  9. Metallography of Battery Resistance Spot Welds

    Science.gov (United States)

    Martinez, J. E.; Johannes, L. B.; Gonzalez, D.; Yayathi, S.; Figuered, J. M.; Darcy, E. C.; Bilc, Z. M.

    2015-01-01

    pre-welded by the manufacturer. This was further complicated as the maximum electrode force was limited to low-electrode force to prevent deflection of the aluminum can during welding. Other Li-ion cells are comprised of smaller diameter cylindrical steel canisters which are inherently capable of handling greater force from the electrodes. Allowing higher-electrode forces aids greatly in insuring a consistent resistance network for the weld. Overall lessons learned: developing good jigs is critical to insure the parts and electrodes are planer to one another and the location of the weld sites remains accurate and repeatable; maintaining strict control over materials is critical--materials must be of a specific hardness and chemical composition to insure that a weld schedule is repeatable; accuracy of the die used to stamp the projections is critical and worth the investment; and proper seasoning of the electrodes is critical to producing consistent welds--once the electrodes have been properly seasoned, cleaning/dressing should be avoided until it is absolutely necessary.

  10. 术中三维超声检测二尖瓣成形前后瓣环空间构型的变化%The annulus configuration changes after mitral repair measured by three dimensional echocardiography

    Institute of Scientific and Technical Information of China (English)

    张海波; 孟旭; 郭勇; 何怡华; 韩杰; 李岩

    2014-01-01

    echocardiography was performed before the operation in the operation room.The mitral annulus configuration,the mitral prolapse and regurgitation grades were examined.The mitral annulus diameter,the distance between commisure1 and commisure2,distance between anterior and posterior annulus,the annulus height and the non-planer angel were measured.The primary repair strategies were evaluated.The same procedure was done after the surgery.Results Totally 36 cases were enrolled,fully consistent with the intraoperative findings had 26 cases (72.2%),partially coincide had 6 cases (16.7%),the gap was larger in 4 cases (11.1%).The mitral annulus appears consistently as saddle shape during the whole movement phase,the lowest height was at the commissure part and the highest part was at the annulus.During the systolic phase the non-planer angel between anterior and posterior annuls appeared bigger than in diastolic phase.Disc ring circumference the disc ring diameter and disc ring longitudinal diameter before and after operation was (12.4 ± 2.4) cm,(7.5 ± 0.5) cm; (34.8 ± 2.7) mm,(21.8 ± 1.8) mm; (34.9 ± 3.1) mm,(20.4 ± 2.1) mm,respectively.The difference of disc ring circumference the disc ring diameter and disc ring longitudinal diameter before and after operation were statistically significant (P < 0.05).The annulus circumference,transverse,longitudinal diameters decreased compared with before the surgery.Preoperative mitral transverse diameter and longitudinal diameter values are almost the same,indicating that at this time the mitral annulus was in nearly round shape.However the longitudinal/transverse ratio reached 93% after surgery also implied that the mitral annulus configuration recovery after annuloplasty.After the surgery the annulus height decreased from (8.4 ± 0.6) mm to (3.0 ± 0.1) mm while the annular height/transverse diameter ratio decreased from 24% to 14%.Non-planar angle between the anterior and posterior mitral annuls increased from (135 ± 14

  11. 二尖瓣成形术中使用二维平面人工环影响瓣环生理性空间构型%The three dimensional annulus configuration changes after application of two dimensional artificial mitral annuloplasty

    Institute of Scientific and Technical Information of China (English)

    张海波; 孟旭; 郭勇; 何怡华; 韩杰; 李岩

    2015-01-01

    Objective To investigate the mitral annular three dimensional configuration changes after application of two dimensional mitral annuloplasty.Methods Includes criteria:serious mitral prolapse without other cardiac disorders,with age ranged from 18 to 60 years old.Three dimensional echocardiography was performed before the surgery in the operation room.The mitral annular three dimensional configuration,the mitral prolapse and regurgitation grades were examined.And same procedure was done after the mitral repair.All the measure results were expressed as x ± s and the statistical analysis was performed using SPSS 19.0 software.Results Totally 42 cases were enrolled,including 28 posterior prolapse and 14 anterior prolapse cases.All the mitral repair got satisfied none or mild regurgitation.The mitral annulus moved consistently as saddle shape during the whole cardiac cycle,the lowest annulus part was at the commissure and the highest part was at the anterior and posterior annulus centers.During the systolic phase the non-planer angel between anterior and posterior annuls was bigger than in diastolic phase.The annulus circumference,transverse,longitudinal diameters decreased compared with before the surgery.Preoperative mitral transverse diameter and longitudinal diameter values are almost the equal size,indicating the mitral annulus was in nearly round shape.However the longitudinal/transverse ratio reached 0.88 after surgery which implied the annulus configuration recovery after annuloplasty.After the mitral annuloplasty the annular height decreased from (8.4 ± 0.6) mm to (3.2 ±0.1) mm while the annular height/transverse diameter ratio decreased from 0.24 to 0.15,which may be affected by the application of the two dimensional rigid artificial annulus.Non-planar angle between the anterior and posterior mitral annuls increased from(136 ± 13)degrees to(145 ± 14) degrees after mitral repair.Conclusion The mitral annulus configuration may have planarization changes due

  12. Lærerstudenters kommentatorkompetanse om flerkultur og undervisning av flerspråklige elever drøftet i lys av kritisk multikulturalisme

    Directory of Open Access Journals (Sweden)

    Wenche Elisabeth Thomassen

    2016-01-01

    Full Text Available Grunnskolelærerutdanningen har som mål å utdanne studenter med både aktør- og kommentatorkompetanse. Kommentatorkompetanse innebærer evnen til kritisk refleksjon. Planer, forskrifter og retningslinjer for grunnskolelærer-utdanningene fastslår at studentene skal ha kunnskaper om flerkultur og undervisning av minoritetsspråklige elever. Slik kompetanse er fortsatt etterspurt, også blant nyutdannede lærere.I denne undersøkelsen er “kritisk multikulturalisme” brukt som teoretisk tilnærming for å analysere gruppeintervjuer med lærerstudenter. Drøftingen inkluderer også hvordan begreper fra denne teoretiske tilnærmingen fungerer for å forstå lærerstudentenes kommentatorkompetanse. Kritisk multikulturalisme er opptatt av å gi en analyse av undertrykking og institusjonalisering av ulike maktrelasjoner innen utdanning. Begreper som er særlig framtredende, er systemmakt, definisjonsmakt og avmakt. Empirien er en del av et større forskningsprosjekt ved UiS, som studerer praksis i grunnskolelærerutdanningen.Undersøkelsen viser at lærerstudentene viser oppmerksomhet og grad av kritisk kommentatorkompetanse når det gjelder systemnivå og pedagogiske praksiser, men ikke har nødvendigvis tilstrekkelig kunnskap om lover og regler for opplæringen. De savner mer oppmerksomhet på temaet innen lærerutdanningen, særlig konkret didaktikk. Funn i materialet indikerer at det ville være av betydning med en dypere forståelse og mer faglige begreper som grunnlag for refleksjon.Analysebegrepene fra kritisk multikulturalisme kan bidra til å sette studentenes utsagn inn i en større sammenheng og peke på potensielt diskriminerende diskurser, men fanger ikke alt studentene er opptatt av. Dette er et område som det ikke er mye forskning på i Norge, artikkelen er et bidrag til økt kunnskap om flerkultur i grunnskolelærerutdanningene.Nøkkelord: lærerstudenter, flerkultur, flerspråklige elever, kritisk multikulturalisme Abstract

  13. Combustion characterization of rape seed meal and suggestions for optimal use in combustion appliances; Foerbraenningskarakterisering av rapsmjoel och foerslag till optimalt nyttjande i olika foerbraenningsanlaeggningar

    Energy Technology Data Exchange (ETDEWEB)

    Eriksson, Gunnar; Hedman, Henry; Oehman, Marcus; Bostroem, Dan; Pettersson, Esbjoern; Pommer, Linda; Lindstroem, Erica; Backman, Rainer; Oehman, Rikard

    2007-12-15

    When rape oil is chemically extracted, rape seed meal, a solid residue remains. Currently, it is used as animal feed. Several plants for the production of rape methyl ester (RME, biodiesel) are in operation or under construction. Combustion properties have been studied for rape seed meal produced as a by product to rape-methyl esther (RME, biodiesel). Composition of the material has been measured, using proximate and ultimate analysis. The lower heating value was 18.2 +- 0.3 MJ/kg d.w. and the ash content was 7-8 percent d.w. The material is rich in nitrogen and sulphur. Concentrations of K, P, Ca and Mg are high in the fuel. Rape seed meal was mixed with bark and pelletised. Bark pellets were also used as a reference fuel. Pellets with 10 and 30 percent rape seed meal were produced. Material with 80 percent rape seed meal and 20 percent planer shavings was also pelletised. Wood had to be added to provide enough friction in the pelletising process, with adapted equipment rape seed meal could probably be easily pelletised). The material was studied using Thermo-Gravimetric Analysis (TGA), and compared with data from tests with wood powder. The pyrolysis of the rape seed meal has a characteristic temperature of 320 deg C. Devolatilisation starts at 150 deg C (at a lower temperature than for wood powder), and proceeds within a rather wide temperature range. The probable cause is the difference in organic content, in particular protein content. The result does not suggest that the material will be difficult to ignite. Experiments in a bench-scale fluidised bed (5 kW) showed that pellets containing only bark, and the mixture rape seed meal/wood had a bed agglomeration temperature well over the normal operational bed temperature. For the fuel mixtures rape seed meal and bark, the agglomeration temperature was slightly over the operational temperature. Particle emissions from fluidised bed combustion and grate combustion were, the latter simulated using a commercial

  14. Mechanisms for strain localization within Archaean craton: A structural study from the Bundelkhand Tectonic Zone, north-central India

    Science.gov (United States)

    Sarkar, Saheli; Patole, Vishal; Saha, Lopamudra; Pati, Jayanta Kumar; Nasipuri, Pritam

    2015-04-01

    part of Bundelkhand Craton are characterized by the development of at least three stages of folding. The penetrative foliation in the TTG is characterized by the parallel alignment of biotite and amphibole (S2). In the low-strain domains, the S2 foliation is axial planer to the small scale root less hinges (F2) of mafic boudins and anatectic leucosomes (S1). The presence of hook-shaped fold on the mafic and anatectic leucozomal layers indicates that co-axial nature of F1 and F2 folds. In general, the F2 axial planes (S2) are oriented in NNW-SSE direction. The F2 fold axes are generally north trending with sub-vertical plunge (550 -> 0060N). The intensity and tightness of last stage of folding is prominent in the leucocratic layers and is characterized by the development of open warps with E-W trending axial planes. However, the effect of F3 is not prominent in the mafic layers. Locally, small scale E-W displacement in the mafic bands corresponds to the E-W trending F3 axial plane in the leucosomes. In contrast to the TTGs, the supracrustal rocks are devoid of melting and compositional segregation. The supracrustal units are characterized by the development of E-W trending fabric. The development of tight to isoclinal folds in the leucosomes of TTGs indicates the F1 folding in the partially molten TTG occurred in the anatectic conditions. The presence of melt decreases the effective viscosity of the rock and promotes the development of tight to isoclinal folds in the F1 and F2 phases. It is also suggested that the segregation of the melt during the first and second phases of folding again increases the strength of the restite and is manifested by the development of small scale E-W displacements. The study demonstrated the change in the strength of a segment of Archaean crust due to the limited availabiliy of melt during deformation. The presence of three stages of deformation in the TTGs and E-W trending fabric in banded iron formation and quartzite indicate the opening

  15. 安氏Ⅱ类2分类错牙合上前牙冠根形态的锥形束CT分析%A cone-beam computed tomography study on crown-root morphology of maxillary anterior teeth in Class Ⅱ,division 2 malocclusion

    Institute of Scientific and Technical Information of China (English)

    黎敏; 王斯维; 赵一姣; 刘怡

    2016-01-01

    Objective:To study crown-root morphology of maxillary anterior teeth in ClassⅡ,division 2 malocclusion using cone-beam CT (CBCT)combined with computer aided measurement technology to provide guidance for clinical treatment.Methods:The samples which consisted of 36 cases radiographed with CBCT techniques were selected and divided into two groups (1 8 each )based on the type of maloc-clusion presented:ClassⅡ,division 2 group (groupⅡ2)and ClassⅠgroup (groupⅠ).The measure-ments of crown-root morphology including crown-root angle and surface-shaft angle were got by Multiple Planer Reconstruction of CBCT data uploaded into InvivoDental software 5.0.The data were processed with SPSS 20.0 software package and t test was employed for comparison of angular measurements. Results:In group Ⅰ,crown-root angles of maxillary central incisor,maxillary lateral incisor and maxillary canines were 1 79.08°±3.31 °,1 76.55°±2.77°and 1 84.20°±2.51 °respectively, surface-shaft angles were 21 .00°±2.63°,1 9.63°±2.35°and 1 9.36°±2.30°respectively. While in group Ⅱ 2 ,crown-root angles of maxillary central incisor,maxillary lateral incisor and maxillary canines were 1 76.80°±2.62°,1 74.1 3°±3.28°and 1 81 .79°±2.88°respectively, surface-shaft angles were 23.20°±2.95°,22.29°±2.1 9°and 20.61 °±2.34°respectively. Compared with group Ⅰ,significant statistical differences were observed with the exception of sur-face-shaft angle of maxillary incisor.There was significant difference in crown-root angle between group Ⅱ2 and 1 80 °.Conclusion:The maxillary anterior teeth in ClassⅡ,division 2 malocclusion exhibited significant crown-root morphology which would influence the torque after orthodontic treat-ment.Special attention should be paid to the position of maxillary anterior teeth roots during ortho-dontic treatment for Class Ⅱ,division 2 malocclusion.The ideal position of tooth movement should be decided by the root rather than the

  16. 关节镜下经肌腱修补治疗关节侧肩袖部分损伤%Arthroscopic treatment of articular side partial tear of supraspinatus tendon by the trans-tendon approach

    Institute of Scientific and Technical Information of China (English)

    汪滋民; 李全; 王一; 沈锋; 许国星; 宋爽

    2014-01-01

    females,whose ages are from 29 to 72 years old with the average age of 52.9± 13.3 years old.9 lesions were on the right shoulder,3 on the left shoulder,and nine on the dominant shoulder.6 patients had a history of trauma on their shoulders,of which 3 patients hit their shoulders on the ground and 3 hit their hands on the ground.All patients have a pain of the inj ured shoulder, night pain and most had a problem of shoulder mobility.The patients received the preoperative functional exercise,physical therapy,non-steroidal anti-inflammatory drug therapy and local steroid injection for 1 to 17 months (average 6 months).Physical examination was as follows:11 cases had front shoulder lateral tenderness,9 cases had positive Neer impingement signs,9 cases had positive Hawkins impingement signs,7 cases had positive signs of painful arc from 60 to 120°,and the Jobe tests of 9 cases were positive.The preoperative MRIs of all the patients showed a rotator cuff tear. Surgical methods:After general anesthesia,the patient was placed in the lateral position with little abduction and anteflexion traction.After sterilization and drape,we marked the bony landmarks and the position of the surgery approach in the skin.Build a rear channel at the first step of surgery.Then we made a arthroscopic examination of the glenohumeral joint.Then build a front channel from outside to the front and examine the glenohumeral joint.Use the planer and radio frequency to repair and clear the damage at the end point of the supraspinatus muscle.Assess the extent of the damage of the joint side rotator cuff,and if the damage was up to 6 mm in width which means Ellman degree Ⅲ PASTA lesion,the damage needed to be repaired (Figure 1 A).Before the repair,we must take a subacromial decompression.Insert the arthroscope into the subacromial bursa using the same rear incision.Remove and clean the bursa tissue through the front and the lateral channel until the rotator cuff footprints besides the bursa could be