Sample records for rotating equipment applications

  1. Novel Carbon Films for Next Generation Rotating Equipment Applications

    Michael McNallan; Ali Erdemir; Yury Gogotsi


    This report describes the results of research performed on a new generation of low friction, wear resistant carbon coatings for seals and bearings in high speed rotating equipment. The low friction coatings, Near Frictionless Carbon (NFC), a high hydrogen content diamondlike carbon, and Carbide Derived Carbon (CDC), a conversion coating produced on the surfaces of metal carbides by halogenation, can be applied together or separately to improve the performance of seals and bearings, with benefits to energy efficiency and environmental protection. Because hard carbide ceramics, such as silicon carbide, are widely used in the seals industry, this coating is particularly attractive as a low cost method to improve performance. The technology of CDC has been licensed to an Illinois company, Carbide Derivative Technologies, Inc. (CDTI) to implement the commercialization of this material.

  2. Risk matrix model for rotating equipment

    Wassan Rano Khan


    Full Text Available Different industries have various residual risk levels for their rotating equipment. Accordingly the occurrence rate of the failures and associated failure consequences categories are different. Thus, a generalized risk matrix model is developed in this study which can fit various available risk matrix standards. This generalized risk matrix will be helpful to develop new risk matrix, to fit the required risk assessment scenario for rotating equipment. Power generation system was taken as case study. It was observed that eight subsystems were under risk. Only vibration monitor system was under high risk category, while remaining seven subsystems were under serious and medium risk categories.

  3. Efficiencies from Applying a Rotational Equipping Strategy


    aviation brigade CDU critical dual use CONUS continental United States DoD Department of Defense FA brigade field artillery brigade FMTV family of...use ( CDU ) items, meaning that they are important to the ARNG for both “domestic and war fighting missions.”4 CDU items are important when...fulfill their domestic responsibili- ties. Since CDU equipment will not rotate through ARNG units, the potential for reducing the total stock of CDU

  4. Influence of the wind on water application uniformity of a mechanical lateral move irrigation equipment using rotating plate sprinklers

    Lessandro Coll Faria


    Full Text Available ABSTRACT: Investigations demonstrate that the wind is the factor that causes the biggest negative influence on water application of sprinkler irrigation systems. Therefore, this paper aims to evaluate, in in-field conditions, the influence of wind on the water distribution uniformity of a mechanical lateral move sprinkler system used for irrigation in rice crop in the South of Rio Grande do Sul State, Brazil. The equipment is located at the Campo Experimental de Terras Baixas (ETB of EMBRAPA/CPACT and operates with water emitters model I-Wob installed in drop tubes in a distance of 2.8m above the soil surface, having a uniform space of 2.3m between each other and pressure regulators of 68.9kPa. Sixteen in-field evaluations were done and they permitted to infer that the higher is the wind speed, the lower are the values of Christiansen Uniformity (CU and of Distribution Uniformity (DU coefficients. Besides, it can be affirmed that even in unfavorable wind conditions, the mechanical lateral move irrigation equipment presented desirable indexes of water application uniformity.

  5. Survey of industrial coal conversion equipment capabilities: rotating components

    Williams, W. R.; Horton, J. R.; Boudreau, W. F.; Siman-Tov, M.


    At the request of the Major Facilities Project Management Division of the Energy Research and Development Administration, Fossil Energy Division, a study was undertaken to determine the capabilities of U.S. industry to supply the rotating equipment needed for future coal conversion facilities. Furthermore, problem areas were to be identified and research and development needs determined for producing advanced designs of the required equipment: Pumps, compressors, hydraulic turbines, and gas expanders. It has been concluded that equipment for essentially all clean-stream applications likely to be encountered in coal conversion facilities is generally available except high-pressure oxygen compressors. These oxygen compressors as well as slurry pumps need to be developed or significantly upgraded. Also, fans and blower for dirty-gas streams need developmental work, as do expanders for high-temperature service. Hydraulic turbines, which were not specified but which might be used for slurry applications in future coal conversion plants, are not available.

  6. Assessment of applications of conducting polymers in power equipment

    Schock, K.F.; Bennett, A.I.; Burghardt, R.R.; Cookson, A.H.; Saunders, H.E.; Smith, J.D.B (Westinghouse Electric Corp., Pittsburgh, PA (United States)); Kennedy, W.N. (ABB Power Transmission and Distribution Co., Muncie, IN (United States)); Oommen, T.V. (ABB Power Transmission and Distribution Co., Raleigh, NC (United States)); Voshall, R.E. (Gannon Coll., Erie, PA (United States)); Fort, E.M. (Westinghouse Electric Corp., Orlando, FL (United States))


    A feasibility study has been completed to assess potential applications of conducting polymers in the manufacture of power equipment. Ten areas were studied: solid and liquid dielectric cables, capacitors, rotating machinery, transformers, bushings, surge suppressors, vacuum interrupters, gas-insulated equipment, and other miscellaneous applications. Each application was rated according to technical impact, probability of success, economic impact and time frame for implementation. of the 32 potential applications proposed, the top ranking areas were: coating of dielectric films for capacitors, conducting compounds to cover conductors in rotating machines, surface coatings to dissipate charges in bushing, coatings for controlled surface conductivity in gas insulated equipment and thermal history monitors. Finally, the issues that have to be resolved before conducting polymers can find use in the identified applications are discussed in this paper.

  7. Rotating transformers in wind turbine applications

    Hylander, J. [Chalmers Univ. of Technology, Goeteborg (Sweden); Engstroem, S. [Aegir konsult AB, Lidingoe (Sweden)


    The power consumption of rotating electrical components is often supplied via slip-rings in wind turbines. Slip-ring equipment is expensive and need maintenance and are prone to malfunction. If the slip-rings could be replaced with contact-less equipment better turbines could be designed. This paper presents the design, some FE calculations and some measurements on a prototype rotating transformer. The proposed transformer consists of a secondary rotating winding and a stationary exciting primary winding. The results indicate that this transformer could be used to replace slip-rings in wind turbines. 4 refs, 3 figs

  8. Faraday Rotator Glass for Laser Application

    JIANG Ya-si; ZHOU Bei-ming; WANG Biao; HU Li-li


    Glasses with strong Faraday rotation are interest for laser applications. The principles of diamagnetic and paramagnetic Faraday rotator glasses are described theoretically and experimentally. High performance Tb-paramagnetic glass series were developed and produced at Kigre in the US and SIOM in Shanghai. Large aperture glass disks have been used for high power laser fusion systems.

  9. Assessment of conducting polymer applications in power equipment technology

    Schoch, K.F. Jr.; Bennett, A.I.; Burghardt, R.R.; Cookson, A.H.; Kennedy, W.N.; Oommen, T.V.; Saunders, H.E.; Smith, J.D.B.; Voshall, R.E. (Westinghouse Electric Corp., Pittsburgh, PA (USA)); Fort, E.M. (Westinghouse Electric Corp., Orlando, FL (USA)); Robbins, B. (Reynolds Metals Co., Richmond, VA (USA))


    This report describes for the first time the state-of-the-art in conducting polymer technology specifically relating to electric power apparatus for transmission, distribution and generation. Thirty-two new applications in power equipment are proposed and assessed. The areas of the proposed applications include solid dielectric cable, oil-filled cable, capacitors, transformers, rotating machines, bushings, surge supressors, vacuum interrupters, gas-insulated equipment, and miscellaneous applications. The best applications will result in improved reliability and efficiency, design innovations, and simpler manufacturing procedures by taking advantage of the particular characteristics of conducting polymers. These characteristics include good control of conductivity over a range of 10{sup {minus}8} to 10{sup 3} S/cm, compatibility with organic compounds, simple preparation and development of anisotropic conductivity by polymer orientation. The proposed applications were evaluated according to technical impact, probability of success, economic impact, and time frame for implementation. The state-of-the-art of conducting polymers is also reviewed and areas requiring further research for these applications are discussed. Because of substantial recent progress is developing more practical conducting polymer materials, now is an excellent time to pursue the additional research needed. 37 refs., 16 figs., 15 tabs.

  10. Antimicrobial food equipment coatings: applications and challenges.

    Bastarrachea, Luis J; Denis-Rohr, Anna; Goddard, Julie M


    Emerging technologies in antimicrobial coatings can help improve the quality and safety of our food supply. The goal of this review is to survey the major classes of antimicrobial agents explored for use in coatings and to describe the principles behind coating processes. Technologies from a range of fields, including biomedical and textiles research, as well as current applications in food contact materials, are addressed, and the technical hurdles that must be overcome to enable commercial adaptation to food processing equipment are critically evaluated.

  11. Radio telemetry equipment and applications for carnivores

    Fuller, Mark R.; Fuller, Todd K.; Boitani, Luigi; Powell, Roger A.


    Radio-telemetry was not included in the first comprehensive manual of wildlife research techniques (Mosby 1960) because the first published papers were about physiological wildlife telemetry (LeMunyan et al. 1959) and because research using telemetry in field ecology was just being initiated (Marshall et al. 1962; Cochran and Lord 1963). Among the first uses of telemetry to study wildlife, however, was a study of carnivores (Craighead et al. 1963), and telemetry has become a common method for studying numerous topics of carnivore biology. Our goals for this chapter are to provide basic information about radio-telemetry equipment and procedures. Although we provide many references to studies using telemetry equipment and methods, we recommend Kenward's (2001) comprehensive book, A manual of wildlife radio tagging for persons who are unfamiliar with radio-telemetry, Fuller et al. (2005), and Tomkiewicz et al. (2010). Compendia of uses of radio-telemetry in animal research appear regularly as chapters in manuals (Cochran 1980; Samuel and Fuller 1994), in books about equipment, field procedures, study design, and applications (Amlaner and Macdonald 1980; Anderka 1987; Amlaner 1989; White and Garrott 1990; Priede and Swift 1992; Kenward 2001; Millspaugh and Marzluff 2001; Mech and Barber 2002), and in reviews highlighting new developments (Cooke et al. 2004; Rutz and Hays 2009; Cagnacci et al. 2010). Some animal telemetry products and techniques have remained almost unchanged for years, but new technologies and approaches emerge and replace previously available equipment at an increasing pace. Here, we emphasize recent studies for which telemetry was used with carnivores.

  12. Application of advanced materials to rotating machines

    Triner, J. E.


    In discussing the application of advanced materials to rotating machinery, the following topics are covered: the torque speed characteristics of ac and dc machines, motor and transformer losses, the factors affecting core loss in motors, advanced magnetic materials and conductors, and design tradeoffs for samarium cobalt motors.

  13. An H-module linear actuator for medical equipment applications

    Liu, Xiao; Wu, Keyuan; ye, yunyue


    An H-module linear actuator (HMLA) is proposed in this paper for medical equipment applications. Compared to the existing linear actuators used in medical equipment, the proposed H-module linear actuator has much lower normal force, which makes use of an additional air-suspension system unnecessary...

  14. Stationary fuel cell applications: electrical equipment requirements

    Durand-Schmutz, C.; Buchsbaum, L.; Lacarnoy, A. [Schneider Electric, Research Center, 38 - Grenoble (France); Kuzkin, G. [US Research Center, Raleigh, NC (United States)


    Schneider Electric is a global company providing market leadership in two core businesses: Electrical Distribution, and Industrial Control and Automation. Schneider operates within four main markets: private residences, commercial buildings, industrial control, and electrical infrastructure. Schneider teams, on both sides of the Atlantic, have used their technical knowledge and global market vision to optimize fuel cell system performance and cost, and to present a power system solution that contains the best global architecture. This work includes high efficiency power conversion modules designed for low voltage / high current fuel cells, grid connection devices that integrate new functionality such as energy optimization and secure power, protection apparatus, advanced control-command strategies, and system optimization hardware. All of this equipment will provide beneficial cost and efficiency impacts to the end user. (authors)

  15. Equipment and services for worldwide applications


    The report presents a digest of geothermal energy technology. The worldwide distribution of geothermal resources is described, and the degree to which various countries are exploiting their resources estimated. Detailed information about US technologies is presented, from exploration through applications to cost factors. (ACR)

  16. 46 CFR 108.437 - Pipe sizes and discharge rates for enclosed ventilation systems for rotating electrical equipment.


    ... 46 Shipping 4 2010-10-01 2010-10-01 false Pipe sizes and discharge rates for enclosed ventilation... Systems Fixed Carbon Dioxide Fire Extinguishing Systems § 108.437 Pipe sizes and discharge rates for enclosed ventilation systems for rotating electrical equipment. (a) The minimum pipe size for the initial...

  17. Rotation Covariant Image Processing for Biomedical Applications

    Henrik Skibbe


    Full Text Available With the advent of novel biomedical 3D image acquisition techniques, the efficient and reliable analysis of volumetric images has become more and more important. The amount of data is enormous and demands an automated processing. The applications are manifold, ranging from image enhancement, image reconstruction, and image description to object/feature detection and high-level contextual feature extraction. In most scenarios, it is expected that geometric transformations alter the output in a mathematically well-defined manner. In this paper we emphasis on 3D translations and rotations. Many algorithms rely on intensity or low-order tensorial-like descriptions to fulfill this demand. This paper proposes a general mathematical framework based on mathematical concepts and theories transferred from mathematical physics and harmonic analysis into the domain of image analysis and pattern recognition. Based on two basic operations, spherical tensor differentiation and spherical tensor multiplication, we show how to design a variety of 3D image processing methods in an efficient way. The framework has already been applied to several biomedical applications ranging from feature and object detection tasks to image enhancement and image restoration techniques. In this paper, the proposed methods are applied on a variety of different 3D data modalities stemming from medical and biological sciences.

  18. The Application of Counter-Rotating Turbine in Rocket Turbopump

    Tang Fei


    Full Text Available Counter rotating turbine offers advantages on weight, volume, efficiency, and maneuverability relative to the conventional turbine because of its special architecture. Nowadays, it has been a worldwide research emphasis and has been used widely in the aeronautic field, while its application in the astronautic field is seldom investigated. Researches of counter rotating turbine for rocket turbopump are reviewed in this paper. A primary analysis of a vaneless counter rotating-turbine configuration with rotors of different diameters and rotational speeds is presented. This unconventional configuration meets the requirements of turbopump and may benefit the performance and reliability of rocket engines.

  19. Multiple-cylindrical Electrode System for Rotational Electric Field Generation in Particle Rotation Applications

    Prateek Benhal


    Full Text Available Lab-on-a-chip micro-devices utilizing electric field-mediated particle movement provide advantages over current cell rotation techniques due to the flexibility in configuring micro-electrodes. Recent technological advances in micro-milling, three-dimensional (3D printing and photolithography have facilitated fabrication of complex micro-electrode shapes. Using the finite-element method to simulate and optimize electric field induced particle movement systems can save time and cost by simplifying the analysis of electric fields within complex 3D structures. Here we investigated different 3D electrode structures to obtain and analyse rotational electric field vectors. Finite-element analysis was conducted by an electric current stationary solver based on charge relaxation theory. High-resolution data were obtained for three-, four-, six- and eight-cylindrical electrode arrangements to characterize the rotational fields. The results show that increasing the number of electrodes within a fixed circular boundary provides larger regions of constant amplitude rotational electric field. This is a very important finding in practice, as larger rotational regions with constant electric field amplitude make placement of cells into these regions, where cell rotation occurs, a simple task – enhancing flexibility in cell manipulation. Rotation of biological particles over the extended region would be useful for biotechnology applications which require guiding cells to a desired location, such as automation of nuclear transfer cloning.

  20. Application of risk-based inspection methods for cryogenic equipment

    CERN. Geneva


    Risk-based Inspection (RBI) is widely applied across the world as part of Pressure Equipment Integrity Management, especially in the oil and gas industry, to generally reduce costs compared with time-based approaches and assist in assigning resources to the most critical equipment. One of the challenges in RBI is to apply it for low temperature and cryogenic applications, as there are usually no degradation mechanisms by which to determine a suitable probability of failure in the overall risk assessment. However, the assumptions used for other degradation mechanisms can be adopted to determine, qualitatively and semi-quantitatively, a consequence of failure within the risk assessment. This can assist in providing a consistent basis for the assumptions used in ensuring adequate process safety barriers and determining suitable sizing of relief devices. This presentation will discuss risk-based inspection in the context of cryogenic safety, as well as present some of the considerations for the risk assessme...

  1. Advanced Machine learning Algorithm Application for Rotating Machine Health Monitoring

    Kanemoto, Shigeru; Watanabe, Masaya [The University of Aizu, Aizuwakamatsu (Japan); Yusa, Noritaka [Tohoku University, Sendai (Japan)


    The present paper tries to evaluate the applicability of conventional sound analysis techniques and modern machine learning algorithms to rotating machine health monitoring. These techniques include support vector machine, deep leaning neural network, etc. The inner ring defect and misalignment anomaly sound data measured by a rotating machine mockup test facility are used to verify the above various kinds of algorithms. Although we cannot find remarkable difference of anomaly discrimination performance, some methods give us the very interesting eigen patterns corresponding to normal and abnormal states. These results will be useful for future more sensitive and robust anomaly monitoring technology.

  2. [Application of information management system about medical equipment].

    Hang, Jianjin; Zhang, Chaoqun; Wu, Xiang-Yang


    Based on the practice of workflow, information management system about medical equipment was developed and its functions such as gathering, browsing, inquiring and counting were introduced. With dynamic and complete case management of medical equipment, the system improved the management of medical equipment.

  3. Clinical applications of advanced rotational radiation therapy

    Nalichowski, Adrian

    Purpose: With a fast adoption of emerging technologies, it is critical to fully test and understand its limits and capabilities. In this work we investigate new graphic processing unit (GPU) based treatment planning algorithm and its applications in helical tomotherapy dose delivery. We explore the limits of the system by applying it to challenging clinical cases of total marrow irradiation (TMI) and stereotactic radiosurgery (SRS). We also analyze the feasibility of alternative fractionation schemes for total body irradiation (TBI) and TMI based on reported historical data on lung dose and interstitial pneumonitis (IP) incidence rates. Methods and Materials: An anthropomorphic phantom was used to create TMI plans using the new GPU based treatment planning system and the existing CPU cluster based system. Optimization parameters were selected based on clinically used values for field width, modulation factor and pitch. Treatment plans were also created on Eclipse treatment planning system (Varian Medical Systems Inc, Palo Alto, CA) using volumetric modulated arc therapy (VMAT) for dose delivery on IX treatment unit. A retrospective review was performed of 42 publications that reported IP rates along with lung dose, fractionation regimen, dose rate and chemotherapy. The analysis consisted of nearly thirty two hundred patients and 34 unique radiation regimens. Multivariate logistic regression was performed to determine parameters associated with IP and establish does response function. Results: The results showed very good dosimetric agreement between the GPU and CPU calculated plans. The results from SBRT study show that GPU planning system can maintain 90% target coverage while meeting all the constraints of RTOG 0631 protocol. Beam on time for Tomotherapy and flattening filter free RapidArc was much faster than for Vero or Cyberknife. Retrospective data analysis showed that lung dose and Cyclophosphomide (Cy) are both predictors of IP in TBI/TMI treatments. The

  4. Application of integral imaging autostereoscopic display to medical training equipment

    Nagatani, Hiroyuki


    We applied an autostereoscopic display based on the integral imaging method (II method) to training equipment for medical treatment in an attempt to recover the binocular vision performance of strabismus or amblyopia (lazy eye) patients. This report summarizes the application method and results. The point of the training is to recognize the parallax using both eyes. The strabismus or amblyopia patients have to recognize the information on both eyes equally when they gaze at the display with parallax and perceive the stereo depth of the content. Participants in this interactive training engage actively with the image. As a result, they are able to revive their binocular visual function while playing a game. Through the training, the observers became able to recognize the amount of parallax correctly. In addition, the training level can be changed according to the eyesight difference between a right eye and a left eye. As a result, we ascertained that practical application of the II method for strabismus or amblyopia patients would be possible.

  5. 78 FR 40388 - Inadmissibility of Consumer Products and Industrial Equipment Noncompliant With Applicable Energy...


    ... equipment is proposed for importation that the goods meet the applicable efficiency standards and labeling... ``covered import.'' For example, products and equipment may be entered into customs bonded warehouses and... been filed, including those products and equipment withdrawn from warehouse for consumption or...

  6. Power management and distribution equipment developed for space applications

    Thornton, R. D.

    Some of the current developments in the area of dc power switching and conversion equipment are described for Space Station Freedom. The equipment includes 120-Vdc remote power controllers (RPCs) rated at 1 kW, 5 kW, and 15 kW; 25-kW and 50-kW remote bus isolators (RBIs), both uni- and bi-directional; a 1-kW 120-Vdc/28-Vdc converter; and a 250-Adc differential fault protection module. Most of this equipment was designed to allow communication with a power system controller via a full MIL-STD-1553B data bus interface. The standard interface/data acquisition card developed for the described hardware allows remote control of the equipment as well as monitoring of system loads and voltages.

  7. A rubber mount model. Application to automotive equipment suspension

    Manin, Lionel; Dufour, Régis; Thomas, Benjamin; Goge, Philippe


    International audience; In order to predict the nonlinear dynamic response of automotive equipment supported by rubber mounts, it is proposed to extend the generalized Dahl model for taking into account the visco-elastic behaviour of elastomer mount and to combine it, in a next step, with the reduced dynamic equations of the equipment supposed to exhibit a linear behaviour. To this end, the parameters of the restoring force model of the mounts are identified through a series of tests accounti...

  8. Geometric moment extraction equipment for image processing applications.

    Kumar, Ahlad; Paramesran, Raveendran


    An equipment for calculating 2nd, 3rd, and higher order geometric moments by using accumulators, adders, subtractors, and multiplier blocks has been presented. The performance analysis of the proposed equipment with the existing systems in terms of speed and power dissipation has been carried out and has been shown that the computational time to calculate the geometric moments is reduced to half and the power dissipation is reduced by a factor of about 3 at a clock frequency of 10 MHz. The hardware has been implemented in BSIM4.3.0 50 nm technology operating at 1 V and its functionality has been verified using P-Spice simulator.

  9. 77 FR 39521 - Application for a License To Export Nuclear Reactor Major Components and Equipment


    ... From the Federal Register Online via the Government Publishing Office NUCLEAR REGULATORY COMMISSION Application for a License To Export Nuclear Reactor Major Components and Equipment Pursuant to 10... Reactor internals, Components and For use in Braka nuclear power Company LLC reactor coolant equipment...

  10. Compact sensor for measuring nonlinear rotational dynamics of driven magnetic microspheres with biomedical applications

    McNaughton, Brandon H. [Department of Physics, University of Michigan, Ann Arbor, MI 48109-1040 (United States); Applied Physics Program, University of Michigan, Ann Arbor, MI 48109-1040 (United States)], E-mail:; Kinnunen, Paivo [Applied Physics Program, University of Michigan, Ann Arbor, MI 48109-1040 (United States); Department of Chemistry, University of Michigan, Ann Arbor, MI 48109-1055 (United States); Smith, Ron G.; Pei, S.N. [Department of Chemistry, University of Michigan, Ann Arbor, MI 48109-1055 (United States); Torres-Isea, Ramon [Department of Physics, University of Michigan, Ann Arbor, MI 48109-1040 (United States); Kopelman, Raoul [Department of Physics, University of Michigan, Ann Arbor, MI 48109-1040 (United States); Applied Physics Program, University of Michigan, Ann Arbor, MI 48109-1040 (United States); Department of Chemistry, University of Michigan, Ann Arbor, MI 48109-1055 (United States); Clarke, Roy [Department of Physics, University of Michigan, Ann Arbor, MI 48109-1040 (United States); Applied Physics Program, University of Michigan, Ann Arbor, MI 48109-1040 (United States)


    The nonlinear rotation response of a magnetic particle occurs when a driving magnetic field, used to rotate the magnetic particle, exceeds a critical frequency. This type of nonlinear rotational dynamic depends on several physical parameters, such as the rotational drag that the particle experiences. Shifts in this nonlinear rotational frequency offer a dynamic approach for the detection of bacteria, measurement of their growth, their response to chemical agents, and other biomedical applications. Therefore, we have developed a stand-alone prototype device that utilizes an elegant combination of a laser diode and photodiode to monitor particle rotation.

  11. 40 CFR 63.5737 - How do I demonstrate compliance with the resin and gel coat application equipment cleaning...


    ... the resin and gel coat application equipment cleaning standards? 63.5737 Section 63.5737 Protection of... Pollutants for Boat Manufacturing Standards for Resin and Gel Coat Application Equipment Cleaning Operations § 63.5737 How do I demonstrate compliance with the resin and gel coat application equipment...

  12. Implementation of a Rotational Ultrasound Biomicroscopy System Equipped with a High-Frequency Angled Needle Transducer — Ex Vivo Ultrasound Imaging of Porcine Ocular Posterior Tissues

    Tae-Hoon Bok


    Full Text Available The mechanical scanning of a single element transducer has been mostly utilized for high-frequency ultrasound imaging. However, it requires space for the mechanical motion of the transducer. In this paper, a rotational scanning ultrasound biomicroscopy (UBM system equipped with a high-frequency angled needle transducer is designed and implemented in order to minimize the space required. It was applied to ex vivo ultrasound imaging of porcine posterior ocular tissues through a minimal incision hole of 1 mm in diameter. The retina and sclera for the one eye were visualized in the relative rotating angle range of 270° ~ 330° and at a distance range of 6 ~ 7 mm, whereas the tissues of the other eye were observed in relative angle range of 160° ~ 220° and at a distance range of 7.5 ~ 9 mm. The layer between retina and sclera seemed to be bent because the distance between the transducer tip and the layer was varied while the transducer was rotated. Certin features of the rotation system such as the optimal scanning angle, step angle and data length need to be improved for ensure higher accuracy and precision. Moreover, the focal length should be considered for the image quality. This implementation represents the first report of a rotational scanning UBM system.

  13. Muon spin rotation studies of niobium for superconducting rf applications

    A. Grassellino


    Full Text Available In this work we investigate superconducting properties of niobium samples via application of the muon spin rotation/relaxation (μSR technique. We employ for the first time the μSR technique to study samples that are cut out from large and small grain 1.5 GHz radio frequency (rf single cell niobium cavities. The rf test of these cavities was accompanied by full temperature mapping to characterize the rf losses in each of the samples. Results of the μSR measurements show that standard cavity surface treatments like mild baking and buffered chemical polishing performed on the studied samples affect their surface pinning strength. We find an interesting correlation between high field rf losses and field dependence of the sample magnetic volume fraction measured via μSR. The μSR line width observed in zero-field-μSR measurements matches the behavior of Nb samples doped with minute amounts of Ta or N impurities. A lower and an upper bound for the upper critical field H_{c2} of these cutouts is found.

  14. Application and preventive maintenance of neurology medical equipment in Isfahan alzahra hospital

    Parivash Alikhani


    Conclusions: Survey of application and preventive maintenance of neurology medical equipment in Isfahan Alzahra hospital show there is no P.M system. Implementing a complete P.M system for this medical center is crucial to preventing cause problems for these medical equipment and decreasing maintenance costs and gaining uptime. Researchers of this article have tried to provide PM, use of texts, web and experts.

  15. Magnetic bearings. Theory, design, and application to rotating machinery

    Schweitzer, Gerhard [Mechatronics Consulting, Kuesnacht (Switzerland); Maslen, Eric H. (eds.) [Virginia Univ., Charlottesville, VA (United States). Dept. Mechanical and Aerospace Engineering


    Compiling the expertise of nine pioneers of the field, Magnetic Bearings - Theory, Design, and Application to Rotating Machinery offers an encyclopedic study of this rapidly emerging field with a balanced blend of commercial and academic perspectives. Every element of the technology is examined in detail, beginning at the component level and proceeding through a thorough exposition of the design and performance of these systems. The roster of authors boasts an average of twenty-five years of work developing magnetic bearing technology - a truly exceptional pool of experience. The book is organized in a logical fashion, starting with an overview of the technology and a survey of the range of applications. A background chapter then explains the central concepts of active magnetic bearings while avoiding a morass of technical details. From here, the reader continues to a meticulous, state-of-the-art exposition of the component technologies and the manner in which they are assembled to form the AMB/rotor system. These system models and performance objectives are then tied together through extensive discussions of control methods for both rigid and flexible rotors, including consideration of the problem of system dynamics identification. Supporting this, the issues of system reliability and fault management are discussed from several useful and complementary perspectives. At the end of the book, numerous special concepts and systems, including micro-scale bearings, self-bearing motors, and self-sensing bearings, are put forth as promising directions for new research and development. Newcomers to the field will find the material highly accessible while veteran practitioners will be impressed by the level of technical detail that emerges from a combination of sophisticated analysis and insights gleaned from many collective years of practical experience. An exhaustive, self-contained text on active magnetic bearing technology, this book should be a core reference for

  16. Electrochemical Machining – Special Equipment and Applications in Aircraft Industry

    Ruszaj Adam


    Full Text Available Electrochemical machining is an unique method of shaping in which, for optimal parameters tool has no wear, surface layer properties after machining are similar to the core material and surface quality and accuracy increase together with material removal rate increase. Such advantages of electrochemical machining, besides of some ecological problems, create industry interest in the range of manufacturing elements made of materials with special properties (i.e. turbine blades of flow aircrafts engines. In the paper the nowadays possibilities and recent practical application of electrochemical machining in aircraft have been presented.

  17. Application technology in coffee (Coffea arabica L.: effect of air assistance with manually driven equipment

    João Miguel Francisco Ruas


    Full Text Available Small farmers in various parts of Brazil, based the application of pesticides exclusively by a coastal manual sprayers. How it is simple equipment, there are few resources available to improve the quality of the application. The aim of this paper was to study the effect of air assistance, with manual override, in the deposition and percentage of coverage applied on the leaves of coffee plants, situated internally and externally. The equipment consisted of a sprayer coastal pressurized by CO2 attached to an air assistance equipment. At the exit of air assistance equipment a hose was adapted for driving the air flow emitted to the nozzle of the sprayer coastal (XR 110-02, expanded jet plane. It was used a solution of water + potassium chloride + fluorescent dye to the application. The levels of deposits were measured by electrical conductivity of the solution from the washing leaves and the percentage of coverage by ultraviolet light. The deposition was higher in leaves positioned externally to the plant, as well as the coverage percentage. The percentage of coverage was greater for the adaxial side of the coffee leaves. There was no difference for the use or not of the air assistance. Improvements in the generation and distribution of air in manually equipments may be necessary, in order to improve its use in the application of spray liquids.

  18. Orthopaedic Surgery Residency: Perspectives of Applicants and Program Directors on Medical Student Away Rotations.

    O'Donnell, Seth W; Drolet, Brian C; Brower, Jonathan P; LaPorte, Dawn; Eberson, Craig P


    Senior medical students frequently rotate at orthopaedic residency programs away from their home medical schools. However, to our knowledge, the perspective of program directors (PDs) and applicants on the value, objectives, and costs of these rotations has not been studied. Surveys evaluating the frequency, costs, benefits, and objectives of away rotations were distributed to all orthopaedic residency PDs in the United States and applicants in the 2014-2015 Match cycle. Data analysis was conducted to perform inferential and descriptive statistics; comparisons were made between and among PD and applicant groups using two-tailed means Student t-test and analysis of variance. A total of 74 PD (46.0%) and 524 applicant (49.3%) responses were obtained from a national distribution. Applicants completed an average of 2.4 away rotations, with an average cost of $2,799. When stratified on self-reported likelihood of Matching, there were no substantial differences in the total number of rotations performed. The only marked differences between these groups were the United States Medical Licensing Examination Step 1 score and the number of applications to residency programs. PDs reported that significantly fewer rotations should be allowed, whereas applicants suggested higher limits (2.42 rotations versus 6.24, P < 0.001). PDs and applicants had similar perspectives on the value of away rotations; both groups reported more value in finding a "good fit" and making a good impression at the program and placed less value on the educational impact. The value of orthopaedic away rotations appears more utilitarian than educational for both PDs and applicants. Rotations are performed regardless of perceived likelihood of Matching and are used by students and programs to identify a "good fit." Therefore, given the portion of an academic year that is spent on orthopaedic rotations, findings showing perceived low educational value and marked discrepancies between the expected number of

  19. Application of a two-parameter quantum algebra to rotational spectroscopy of nuclei

    Barbier, R.; Kibler, M.


    A two-parameter quantum algebra Uqp( u2) is briefly investigated in this paper. The basic ingredients of a model based on the Uqp( u2) symmetry, the qp-rotator model, are presented in detail. Some general tendencies arising from the application of this model to the description of rotational bands of various atomic nuclei are summarized.

  20. Application of electron beam equipment based on a plasma cathode gun in additive technology

    Galchenko, N. K.; Kolesnikova, K. A.; Semenov, G. V.; Rau, A. G.; Raskoshniy, S. Y.; Bezzubko, A. V.; Dampilon, B. V.; Sorokova, S. N.


    The paper discusses the application of electron beam equipment based on a plasma cathode gun for three-dimensional surface modification of metals and alloys. The effect of substrate surface preparation on the adhesion strength of gas thermal coatings has been investigated.

  1. Dosimetric study of surface applicators of HDR brachytherapy GammaMed Plus equipment

    Reyes-Rivera, E., E-mail:, E-mail:, E-mail:; Sosa, M., E-mail:, E-mail:, E-mail:; Reyes, U., E-mail:, E-mail:, E-mail:; Jesús Bernal-Alvarado, José de, E-mail:, E-mail:, E-mail:; Córdova, T., E-mail:, E-mail:, E-mail:; Gil-Villegas, A., E-mail:, E-mail:, E-mail: [División de Ciencias e Ingenierías, Universidad de Guanajuato, 37150 León, Gto. (Mexico); Monzón, E., E-mail: [Unidad de Alta Especialidad No.1, Instituto Mexicano del Seguro Social, Léon, Gto. (Mexico)


    The cone type surface applicators used in HDR brachytherapy for treatment of small skin lesions are an alternative to be used with both electron beams and orthovoltage X-ray equipment. For a good treatment planning is necessary to know the dose distribution of these applicators, which can be obtained by experimental measurement and Monte Carlo simulation as well. In this study the dose distribution of surface applicators of 3 and 3.5 cm diameter, respectively of HDR brachytherapy GammaMed Plus equipment has been estimated using the Monte Carlo method, MCNP code. The applicators simulated were placed on the surface of a water phantom of 20 × 20 × 20 cm and the dose was calculated at depths from 0 to 3 cm with increments of 0.25 mm. The dose profiles obtained at depth show the expected gradients for surface therapy.

  2. Creation of a library tour application for mobile equipment using iBeacon technology


    We describe the design, development, and deployment of a library tour application utilizing Bluetooth Low Energy devices know as iBeacons. The tour application will serve as library orientation for incoming students. The students visit stations in the library with mobile equipment running a special tour app. When the app detects a beacon nearby, it automatically plays a video that describes the current location. After the tour, students are assessed according to the defined learning objective...

  3. Rotational and spin viscosities of water: Application to nanofluidics

    Hansen, Jesper Søndergaard; Bruus, Henrik; Todd, B.D.


    In this paper we evaluate the rotational viscosity and the two spin viscosities for liquid water using equilibrium molecular dynamics. Water is modeled via the flexible SPC/Fw model where the Coulomb interactions are calculated via the Wolf method which enables the long simulation times required...

  4. Rotating cylinder drag balance with application to riblets

    Hall, T.; Joseph, D.


    Experimental results are reported and discussed for a rotating cylinder drag balance designed to predict drag reduction by surfaces like riblets. The apparatus functions by measuring the torque applied to the inner cylinder by a fluid, such as water, that is set in motion by the controlled rotation of the outer cylinder. The instrument was validated by calibration for laminar flow and comparison of turbulent flow results to the those of G. I. Taylor. The ability to predict drag reduction was demonstrated by testing 114 m symmetric sawtooth riblets, which gave a maximum reduction of about 5% and an overall drag reduction range of 5

  5. Applicability of International Harvesting Equipment Productivity Studies in Maine, USA: A Literature Review

    Patrick Hiesl


    Full Text Available Harvesting equipment productivity studies have been conducted in many countries around the world spanning over 25 years. These studies have shown that many factors influence individual machine productivity. These factors include stand and site conditions, equipment configuration, management objectives, and operator experience. Productivity can increase or decrease with slight changes in any of these factors. This literature review also highlights the variety of experimental designs and data collection methods encountered in a cross section of those studies. It further shows the variation in species composition, stand density, tree diameter, and harvest prescription. Although studies that include the influence of operator performance on harvest equipment productivity are limited, they were included in this review where appropriate and available. It is clear that productivity equations should be developed using population-level data with several operators. Some studies were conducted in stands similar to Maine, but they used harvesting equipment that is not commonly used in logging operations in this state. Therefore the applicability of existing studies to the logging industry in Maine, USA, is very limited. Our conclusion is that in order to accurately predict harvesting productivity it is necessary to develop regional harvesting productivity equations using harvesting equipment commonly used in Maine. Forest operations researchers in other regions will be able to use this summary to explore the difficulty of applying productivity information to regional logging operations.

  6. 40 CFR 63.5734 - What standards must I meet for resin and gel coat application equipment cleaning operations?


    ... 40 Protection of Environment 12 2010-07-01 2010-07-01 true What standards must I meet for resin... Pollutants for Boat Manufacturing Standards for Resin and Gel Coat Application Equipment Cleaning Operations § 63.5734 What standards must I meet for resin and gel coat application equipment cleaning...

  7. A Method of Three-Dimensional Micro-Rotational Flow Generation for Biological Applications

    Yaxiaer Yalikun


    Full Text Available We report a convenient method to create a three-dimensional micro-rotational fluidic platform for biological applications in the direction of a vertical plane (out-of-plane without contact in an open space. Unlike our previous complex fluidic manipulation system, this method uses a micro-rotational flow generated near a single orifice when the solution is pushed from the orifice by using a single pump. The three-dimensional fluidic platform shows good potential for fluidic biological applications such as culturing, stimulating, sorting, and manipulating cells. The pattern and velocity of the micro-rotational flow can be controlled by tuning the parameters such as the flow rate and the liquid-air interface height. We found that bio-objects captured by the micro-rotational flow showed self-rotational motion and orbital motion. Furthermore, the path length and position, velocity, and pattern of the orbital motion of the bio-object could be controlled. To demonstrate our method, we used embryoid body cells. As a result, the orbital motion had a maximum length of 2.4 mm, a maximum acceleration of 0.63 m/s2, a frequency of approximately 0.45 Hz, a maximum velocity of 15.4 mm/s, and a maximum rotation speed of 600 rpm. The capability to have bio-objects rotate or move orbitally in three dimensions without contact opens up new research opportunities in three-dimensional microfluidic technology.

  8. A Rotation of Admixable Operators on Abstract Wiener Space with Applications

    Jae Gil Choi


    Full Text Available We investigate certain rotation properties of the abstract Wiener measure. To determine our rotation property for the Wiener measure, we introduce the concept of an admixable operator via an algebraic structure on abstract Wiener space. As for applications, we define the analytic Fourier-Feynman transform and the convolution product associated with the admixable operators and proceed to establish the relationships between this transform and the corresponding convolution product.

  9. Mechanical design handbook for elastomers. [the design of elastomer dampers for application in rotating machinery

    Darlow, M.; Zorzi, E.


    A comprehensive guide for the design of elastomer dampers for application in rotating machinery is presented. Theoretical discussions, a step by step procedure for the design of elastomer dampers, and detailed examples of actual elastomer damper applications are included. Dynamic and general physical properties of elastomers are discussed along with measurement techniques.

  10. Standards and Best Practices Application of Standards for Equipment-Manufacturing Industries Workshop Held in Shanghai


    @@ The "Application of Standards for Equipment-Manufacturing Industry Workshop" was held for two days in Shanghai from May 25th to May 26th, 2007. Dozens of delegates from famous enterprises and organizations around the world participated, including those from Shell China Ltd., Leal China, Siemens Ltd. China Corporate, and Assurance of SAI Global and SGS . Nine experts, engaged in standardization, intellectual property, and related fields, gave speeches on "Standards and Best Practices," and many illustrative examples of the application of standards were provided.

  11. Application of Diagnostic/Prognostic Methods to Critical Equipment for the Spent Nuclear Fuel Cleanup Program

    Casazza, Lawrence O.; Jarrell, Donald B.; Koehler, Theresa M.; Meador, Richard J.; Wallace, Dale E.


    The management of the Spent Nuclear Fuel (SNF) project at the Hanford K-Basin in the 100 N Area has successfully restructured the preventive maintenance, spare parts inventory requirements, and the operator rounds data requirements. In this investigation, they continue to examine the different facets of the operations and maintenance (O&M) of the K-Basin cleanup project in search of additional reliability and cost savings. This report focuses on the initial findings of a team of PNNL engineers engaged to identify potential opportunities for reducing the cost of O&M through the application of advanced diagnostics (fault determination) and prognostics (residual life/reliability determination). The objective is to introduce predictive technologies to eliminate or reduce high impact equipment failures. The PNNL team in conjunction with the SNF engineers found the following major opportunities for cost reduction and/or enhancing reliability: (1) Provide data routing and automated analysis from existing detection systems to a display center that will engage the operations and engineering team. This display will be operator intuitive with system alarms and integrated diagnostic capability. (2) Change operating methods to reduce major transients induced in critical equipment. This would reduce stress levels on critical equipment. (3) Install a limited sensor set on failure prone critical equipment to allow degradation or stressor levels to be monitored and alarmed. This would provide operators and engineers with advance guidance and warning of failure events. Specific methods for implementation of the above improvement opportunities are provided in the recommendations. They include an Integrated Water Treatment System (IWTS) decision support system, introduction of variable frequency drives on certain pump motors, and the addition of limited diagnostic instrumentation on specified critical equipment.

  12. The application of active noise control technology to reduce noise from air pollution control equipment

    Depies, C. R.; Kapsos, D. W.


    The basic concept of active noise control, i. e. to create a noise field in a space in order to destructively interfere with an existing noise, and in the process create a quieter space, was explained. The manner in which noise control technology can be used in air pollution control equipment was described and guidelines for application were provided. A number of case studies were used to illustrate the suitability of active noise control for low frequency noise problems, especially in the area of air pollution control equipment. Impressive reduction of low frequency noise, energy efficiency, ability to retrofit into an existing duct system, and the hardware`s insensitivity to dirty exhaust environments were cited as the principal reasons for the success of active noise control technology over more traditional in-line passive silencers. 1 ref., 8 figs.

  13. 45 CFR 95.641 - Applicability of rules for charging equipment in Subpart G of this part.


    ... STATE CHILDREN'S HEALTH INSURANCE PROGRAMS) Automatic Data Processing Equipment and Services-Conditions... 45 Public Welfare 1 2010-10-01 2010-10-01 false Applicability of rules for charging equipment in Subpart G of this part. 95.641 Section 95.641 Public Welfare DEPARTMENT OF HEALTH AND HUMAN SERVICES...

  14. Investigation of the Sequential Rotation Technique and its Application in Phased Arrays

    Larsen, Niels Vesterdal


    This report documents the investigations of the sequential rotation technique in application to phased array antennas. A spherical wave expansion for the far field of sequentially phased arrays is derived for general antenna elements. This model is approximate in that it assumes that the element...... patterns are identical and it does not included the effects of mutual coupling between the elements. For this reason it is compared with more accurate numerical models which include the coupling effects. The results show that the sequential rotation technique generally improves the performance...... of the phased array also when it is scanned off bore sight. For array topologies where the elements are not positioned rotationally symmetric the performance of the sequential rotation is to some extent impaired by the mutual coupling and non-identical element patterns. These effects are not evident from...

  15. Two-axes decompositions of (pseudo-)rotations and some of their applications

    Brezov, D. S.; Mladenova, C. D.; Mladenov, I. M.


    We propose a new method for decomposing SO(3) transformations into pairs of successive rotations (about orthogonal axes) and consider some applications in rigid body kinematics and navigation. The construction is then spread to SO(2,1) by means of Wick rotation (duality of Lie algebras) and SO(3,1) by introducing the complex vector-parameter. Possible applications in the Lorentz setting are discussed in the context of special relativity, electrodynamics and scattering theory. At the end we also consider generalizations to other six-dimensional Lie groups, namely SO(4), SO(2,2) and SO*(4).

  16. Creation of a Library Tour Application for Mobile Equipment using iBeacon Technology

    Jonathan Bradley


    Full Text Available We describe the design, development, and deployment of a library tour application utilizing Bluetooth Low Energy devices know as iBeacons. The tour application will serve as library orientation for incoming students. The students visit stations in the library with mobile equipment running a special tour app. When the app detects a beacon nearby, it automatically plays a video that describes the current location. After the tour, students are assessed according to the defined learning objectives. Special attention is given to issues encountered during development, deployment, content creation, and testing of this application that depend on functioning hardware, and the necessity of appointing a project manager to limit scope, define priorities, and create an actionable plan for the experiment.

  17. Application of martensitic, modified martensitic and duplex stainless steel bar stock for completion equipment

    Bhavsar, R.B. [CAMCO Products and Services, Houston, TX (United States); Montani, R. [Foroni, S.p.A., Colombo (Italy)


    Martensitic and duplex stainless steel tubing are commonly used for oil and gas applications containing CO{sub 2}. Completion equipment manufacturing requires use of solid round bar or heavy wall hollows. Material properties for this stock are not identical in all cases. Material properties as well as corrosion characteristics are discussed for 13Cr, 13Cr-5Ni-2Mo and 25Cr alloys. Corrosion testing of modified or Enhanced 13Cr solid bar stock, UNS S41425 and other compositions in H{sub 2}S-Cl{sup {minus}} and pH is reported in coupled and uncoupled condition. Corrosion testing of various super duplex bar stock at various H{sub 2}S-chlorides and temperature in CO{sub 2} environment is reported. Impact value requirements, welding issues and special consideration required for these alloys for completion equipment is discussed. Modified 13Cr and Super Duplex Oil Country Tubular Goods (OCTG) are readily available, however, availability of completion equipment raw material compatible with these OCTG is limited.

  18. Toplam Ekipman Etkinliği ve Bir Uygulama (Overall Equipment Effectiveness and an Application

    Aslı SUCU


    Full Text Available Overall Equipment Effectiveness (OEE, which plays a key role in measuring the success of lean production and TPM applications, is a very important parameter that determines the effectiveness of machines and facilities. In this study, calculation, evaluation, and maximization of OEE values are explained. TPM concept in Lean Production System is taken into account and the OEE values of moulding lines in a foundry factory are calculated. Furthermore, an OEE information system is developed to calculate the OEE values as well as generating the reports required. With this information system at hand, the reports can be presented to operators and managers, enabling them to make the correct decisions on time.

  19. Remote Expertise for Maintenance: An Application of Telecommunications Technology to Improve Shipboard Equipment Readiness


    34°’’ ’^^"^-^ ’’’’’ shore-based’ ; xpert maintLa’nce tec’niSnf de?p ^in. th^’^ M ^^l" ■’■^"’°’^ ’’’^ troubleshooting; and (3) conducting studies to 1,1...Survey Respondents 7 2. Applicability Scores for Telecommunications Accessory Devices Within and Across Categories of Equipment Components...maintenance personnel. The two telecommunications linkage configurations tested in this study were audio plus video and audio with video as needed

  20. On the use of rotational splitting asymmetries to probe the internal rotation profile of stars. Application to $\\beta$ Cephei stars

    Suárez, J C; Goupil, M J; Janot-Pacheco, E


    Rotationally-split modes can provide valuable information about the internal rotation profile of stars. This has been used for years to infer the internal rotation behavior of the Sun. The present work discusses the potential additional information that rotationally splitting asymmetries may provide when studying the internal rotation profile of stars. We present here some preliminary results of a method, currently under development, which intends: 1) to understand the variation of the rotational splitting asymmetries in terms of physical processes acting on the angular momentum distribution in the stellar interior, and 2) how this information can be used to better constrain the internal rotation profile of the stars. The accomplishment of these two objectives should allow us to better use asteroseismology as a test-bench of the different theories describing the angular momentum distribution and evolution in the stellar interiors.

  1. Diagnostic application of magnetic islands rotation in JET

    Buratti, P.; Alessi, E.; Baruzzo, M.; Casolari, A.; Giovannozzi, E.; Giroud, C.; Hawkes, N.; Menmuir, S.; Pucella, G.; Contributors, JET


    Measurements of the propagation frequency of magnetic islands in JET are compared with diamagnetic drift frequencies, in view of a possible diagnostic application to the determination of markers for the safety factor profile. Statistical analysis is performed for a database including many well-diagnosed plasma discharges. Propagation in the plasma frame, i.e. with subtracted E  ×  B Doppler shift, results to be in the ion diamagnetic drift direction, with values ranging from 0.8 (for islands at the q  =  2 resonant surface) to 1.8 (for more internal islands) times the ion diamagnetic drift frequency. The diagnostic potential of the assumption of island propagation at exactly the ion diamagnetic frequency is scrutinised. Rational-q locations obtained on the basis of this assumption are compared with the ones measured by equilibrium reconstruction including motional Stark effect measurements as constraints. Systematic shifts and standard deviations are determined for islands with (poloidal, toroidal) periodicity indexes of (2, 1), (3, 2), (4, 3) and (5, 3) and possible diagnostic applications are indicated.

  2. Energy-Effective Rotation Equipment

    V. Kascheev


    Full Text Available The article presents invention, which allows to create compact and cheap fog-forming devices for industrial hothouses (plants, greenhouses, storehouses, testing polygons and other Objects. Besides, this invention gives the possibilities to modernize the traversers of gas-water fire-fighting type AGVS-100 or AGVS-150, using turbojet engines. Utilization of fog-forming machines among fire-fighting devices will increase the effectiveness in fire-fighting of forest and industrial Objects and oil fields.

  3. Liquid crystal chiroptical polarization rotators for the near-UV region: theory, materials, and device applications

    Saulnier, D.; Taylor, B.; Marshall, K. L.; Kessler, T. J.; Jacobs, S. D.


    The helical structure of a chiral-nematic liquid crystal (CLC) material produces a number of interesting optical properties, including selective reflection and optical rotatory power. To take advantage of the high optical rotation near the selective reflection peak for applications in the UV, either large concentrations of chiral components or those possessing very large helical twisting powers (HTP's) are necessary. It is difficult to find chiral twisting agents with high HTP that do not degrade the UV transmission. We report what we believe to be the first experimental observation of extraordinarily high optical rotation (LC) layer thickness. Using this model, the optical rotation at λ = 355 nm for the 1% CB 15/ZLI-1646 mixture is determined computationally, with the results in agreement with experimental data obtained by evaluating a series of wedged cells using an areal mapping, Hinds Exicor 450XT Mueller Matrix Polarimeter. This finding now opens a path to novel LC optics for numerous near-UV applications. One such envisioned application for this class of materials would be UV distributed polarization rotators (UV-DPR's) for largeaperture, high-peak-power lasers.

  4. Highly directional transurethral ultrasound applicators with rotational control for MRI-guided prostatic thermal therapy

    Ross, Anthony B [Thermal Therapy Research Group, UCSF Radiation Oncology, San Francisco, CA (United States); Diederich, Chris J [Thermal Therapy Research Group, UCSF Radiation Oncology, San Francisco, CA (United States); Nau, William H [Thermal Therapy Research Group, UCSF Radiation Oncology, San Francisco, CA (United States); Gill, Harcharan [Department of Urology, Stanford University, Stanford, CA (United States); Bouley, Donna M [Department of Comparative Medicine, Stanford University, Stanford, CA (United States); Daniel, Bruce [Department of Radiology, Stanford University, Stanford, CA (United States); Rieke, Viola [Department of Radiology, Stanford University, Stanford, CA (United States); Butts, R Kim [Department of Radiology, Stanford University, Stanford, CA (United States); Sommer, Graham [Department of Radiology, Stanford University, Stanford, CA (United States)


    Transurethral ultrasound applicators with highly directional energy deposition and rotational control were investigated for precise treatment of benign prostatic hyperplasia (BPH) and adenocarcinoma of the prostate (CaP). Two types of catheter-based applicators were fabricated, using either sectored tubular (3.5 mm OD x 10 mm) or planar transducers (3.5 mm x 10 mm). They were constructed to be MRI compatible, minimally invasive and allow for manual rotation of the transducer array within a 10 mm cooling balloon. In vivo evaluations of the applicators were performed in canine prostates (n 3) using MRI guidance (0.5 T interventional magnet). MR temperature imaging (MRTI) utilizing the proton resonance frequency shift method was used to acquire multiple-slice temperature overlays in real time for monitoring and guiding the thermal treatments. Post-treatment T1-weighted contrast-enhanced imaging and triphenyl tetrazolium chloride stained tissue sections were used to define regions of tissue coagulation. Single sonications with the tubular applicator ) produced coagulated zones covering a wedge of the prostate extending from 1-2 mm outside the urethra to the outer boundary of the gland (16 mm radial coagulation). Single sonications with the planar applicator (15-20 W, 10 min, {approx}8 MHz) generated thermal lesions of {approx}30 extending to the prostate boundary. Multiple sequential sonications (sweeping) of a planar applicator (12 W with eight rotations of 30 each) demonstrated controllable coagulation of a 270 contiguous section of the prostate extending to the capsule boundary. The feasibility of using highly directional transurethral ultrasound applicators with rotational capabilities to selectively coagulate regions of the prostate while monitoring and controlling the treatments with MRTI was demonstrated in this study.

  5. Unilateral rotational path removable partial dentures for tilted mandibular molars: design and clinical applications.

    Luk, K; Tsai, T; Hsu, S; Wang, F L


    This article describes the design of a unilateral rotational path removable partial denture to restore a single edentulous space with a tilted mandibular molar. It is modified from an original bilateral rotational path design and consists of several components, which are (1) the rotation axis, (2) the long occlusal rest, (3) the short bracing arms, (4) the rigid retainer and extended proximal plates, (5) the conventional direct retainer assembly, and (6) optional auxiliary rest. The stability and retention of the denture are controlled anteriorly by the buccal retentive clasp and lingual guide plate of the conventional direct retainer, and posteriorly by the rigid retainer and its buccally and lingually extended proximal plates. The clinical results of the dentures used in strictly selected situations are excellent; however, it is emphasized that a unilateral denture is only an alternative rather than a routine application. The risk of accidental aspiration is also of concern.

  6. Does nitrogen fertilizer application rate to corn affect nitrous oxide emissions from the rotated soybean crop?

    Iqbal, Javed; Mitchell, David C; Barker, Daniel W; Miguez, Fernando; Sawyer, John E; Pantoja, Jose; Castellano, Michael J


    Little information exists on the potential for N fertilizer application to corn ( L.) to affect NO emissions during subsequent unfertilized crops in a rotation. To determine if N fertilizer application to corn affects NO emissions during subsequent crops in rotation, we measured NO emissions for 3 yr (2011-2013) in an Iowa, corn-soybean [ (L.) Merr.] rotation with three N fertilizer rates applied to corn (0 kg N ha, the recommended rate of 135 kg N ha, and a high rate of 225 kg N ha); soybean received no N fertilizer. We further investigated the potential for a winter cereal rye ( L.) cover crop to interact with N fertilizer rate to affect NO emissions from both crops. The cover crop did not consistently affect NO emissions. Across all years and irrespective of cover crop, N fertilizer application above the recommended rate resulted in a 16% increase in mean NO flux rate during the corn phase of the rotation. In 2 of the 3 yr, N fertilizer application to corn (0-225 kg N ha) did not affect mean NO flux rates from the subsequent unfertilized soybean crop. However, in 1 yr after a drought, mean NO flux rates from the soybean crops that received 135 and 225 kg N ha N application in the corn year were 35 and 70% higher than those from the soybean crop that received no N application in the corn year. Our results are consistent with previous studies demonstrating that cover crop effects on NO emissions are not easily generalizable. When N fertilizer affects NO emissions during a subsequent unfertilized crop, it will be important to determine if total fertilizer-induced NO emissions are altered or only spread across a greater period of time.

  7. What is the cost per millimetre? Challenging traditional GNSS equipment for precise geosciences and engineering applications

    Hogg, William; Boreham, Nicholas; Benedetti, Elisa; Roberts, William


    Surveyors, civil and geotechnical engineers are the typical users of professional grade GNSS receiver that is capable of achieving positioning accuracies of sub-centimetre and navigation accuracies of 1-2cm. When choosing the equipment for their needs, they are often faced with a dilemma with each additional frequency, constellation and feature coming at a cost, resulting in professional GNSS equipment being regarded as high-priced specialist equipment. Indeed there are many users that have discounted GNSS on the grounds that it is too expensive and too operationally complex to warrant purchase. Having identified this situation, Nottingham Scientific Ltd (NSL) set about the development of equipment that would break down this barrier making high accuracy GNSS affordable to new users and applications and more cost effective to existing users. NSL created "STICK" which is a single frequency, multi-constellation, IMU-integrated GNSS sensor for precise movement detection of the natural and built environments and infrastructures, at approximately 1/20th of the price of a professional grade GNSS system. STICK has been developed within the context of three European Space Agency (ESA) Integrated Applications Programme Demonstration projects that use space assets to monitor the land stability and the status of different types of infrastructure, each with its own operational challenges. However through the careful selection of components, the implementation of certain operational constraints and the use of advanced statistical data processing, sub-centimetre positioning can be achieved for monitoring purposes. This paper describes STICK, the applications for which it has been developed, and the environments within which it is operating. We then explore the performance by directly comparing STICK to geodetic GNSS receivers setup in an operational, test bed environment. This test bed allows the receivers/antennas to be subjected to a three-dimensional displacement in the order

  8. Comparative analysis of numerical models of pipe handling equipment used in offshore drilling applications

    Pawlus, Witold; Ebbesen, Morten K.; Hansen, Michael R.; Choux, Martin; Hovland, Geir


    Design of offshore drilling equipment is a task that involves not only analysis of strict machine specifications and safety requirements but also consideration of changeable weather conditions and harsh environment. These challenges call for a multidisciplinary approach and make the design process complex. Various modeling software products are currently available to aid design engineers in their effort to test and redesign equipment before it is manufactured. However, given the number of available modeling tools and methods, the choice of the proper modeling methodology becomes not obvious and - in some cases - troublesome. Therefore, we present a comparative analysis of two popular approaches used in modeling and simulation of mechanical systems: multibody and analytical modeling. A gripper arm of the offshore vertical pipe handling machine is selected as a case study for which both models are created. In contrast to some other works, the current paper shows verification of both systems by benchmarking their simulation results against each other. Such criteria as modeling effort and results accuracy are evaluated to assess which modeling strategy is the most suitable given its eventual application.

  9. Rotating-bed reactor as a power source for EM gun applications

    Powell, J.; Botts, T.; Stickley, C.M.; Meth, S.


    Electromagnetic gun applications of the Rotating Bed Reactor (RBR) are examined. The RBR is a compact (approx. 1 m/sup 3/), (up to several thousand MW(th)), high-power reactor concept, capable of producing a high-temperature (up to approx. 300/sup 0/K) gas stream with a MHD generator coupled to it, the RBR can generate electric power (up to approx. 1000 MW(e)) in the pulsed or cw modes. Three EM gun applications are investigated: a rail gun thruster for orbit transfer, a rapid-fire EM gun for point defense, and a direct ground-to-space launch. The RBR appears suitable for all applications.

  10. Design guidelines for use of adhesives in hybrid microcircuits. [for electronic equipment in space applications

    Caruso, S. V.; Perkins, K. L.; Licari, J. J.


    Although it is generally accepted that the use of adhesives in the assembly of hybrid microcircuits offers advantages over other bonding methods, there currently does not exist a set of guidelines for the selection of adhesives which will insure that hybrid microcircuits assembled with them will meet the long use-life, high-reliability requirements of electronic equipment for space applications. This study was directed to the identification of the properties of electrically insulative adhesives that potentially could cause problems in such an application, and to the development of evaluation tests to quantify these properties and thus form the basis for establishing suitable guidelines and, ultimately, specifications. Bond strength, outgassing after cure, and corrosivity were selected for detailed attention since they are considered to be especially critical. Introductory discussion includes enumeration and brief comments on the properties of adhesives considered to be important for the proposed application, a general review of polymeric types of adhesives, and identification of the major types of adhesives commercially available and specifically designed for microelectronic use. The specific tests developed to evaluate bond strength, outgassing after cure, and corrosivity are discussed in detail, and comparative results obtained for selected adhesives representative of the major types are given.

  11. Applications of single-qubit rotations in quantum public-key cryptography

    Nikolopoulos, Georgios M.


    We discuss cryptographic applications of single-qubit rotations from the perspective of trapdoor one-way functions and public-key encryption. In particular, we present an asymmetric cryptosystem whose security relies on fundamental principles of quantum physics. A quantum public key is used for the encryption of messages while decryption is possible by means of a classical private key only. The trapdoor one-way function underlying the proposed cryptosystem maps integer numbers to quantum stat...

  12. Body-fixed relativistic molecular Hamiltonian and its application to nuclear spin-rotation tensor.

    Xiao, Yunlong; Liu, Wenjian


    A relativistic molecular Hamiltonian that describes electrons fully relativistically and nuclei quasi-relativistically is proposed and transformed from the laboratory to the body-fixed frame of reference. As a first application of the resulting body-fixed relativistic molecular Hamiltonian, the long anticipated relativistic theory of nuclear spin-rotation (NSR) tensor is formulated rigorously. A "relativistic mapping" between experimental NSR and NMR is further proposed, which is of great value in establishing high-precision absolute NMR shielding scales.

  13. Bifurcation suppression of nonlinear systems via dynamic output feedback and its applications to rotating stall control

    Pengnian CHEN; Huashu QIN; Shengwei MEI


    This paper deals with the problems of bifurcation suppression and bifurcation suppression with stability of nonlinear systems. Necessary conditions and sufficient conditions for bifurcation suppression via dynamic output feedback are presented;Sufficient conditions for bifurcation suppression with stability via dynamic output feedback are obtained. As an application, a dynamic compensator, which guarantees that the bifurcation point of rotating stall in axial flow compressors is stably suppressed, is constructed.

  14. Study of Rotating-Wave Electromagnetic Modes for Applications in Space Exploration

    Velazco, J. E.


    Rotating waves are circularly polarized electromagnetic wave fields that behave like traveling waves but have discrete resonant frequencies of standing waves. In JPL's Communications Ground Systems Section (333), we are making use of this peculiar type of electromagnetic modes to develop a new generation of devices and instruments for direct applications in space exploration. In this article, we present a straightforward analysis about the phase velocity of these wave modes. A derivation is presented for the azimuthal phase velocity of transverse magnetic rotating modes inside cylindrical cavity resonators. Computer simulations and experimental measurements are also presented that corroborate the theory developed. It is shown that the phase velocity of rotating waves inside cavity resonators increases with radial position within the cavity and decreases when employing higher-order operating modes. The exotic features of rotating modes, once better understood, have the potential to enable the implementation of a plethora of new devices that range from amplifiers and frequency multipliers to electron accelerators and ion thrusters.

  15. Flex Power Grid Lab, an electronic equipment test laboratory for emerging MV applications, including grid inverters

    Jong, Erik C.W. de [Flex Power Grid Lab, Arnheim (Netherlands); Vaessen, Peter T.M. [KEMA Nederland B.V., Arnheim (Netherlands)


    The success of a sustainable energy supply in a free energy market depends on proper management of the energy flows. For control and management, power electronics are indispensable. The knowledge about electromagnetic power technology and the development of components are about to undergo explosive growth. Due to the emergence of decentralised energy sources and the liberalisation of the energy market, the control and management of electrical flows is gaining in importance. Hierarchically controlled one-way traffic continues to decline in favour of (autonomous) networks supplied by large and small generating stations that provide varying electric currents in all directions within a power grid. The complexity of constantly balancing supply and demand is therefore increasing while the assets are simultaneously being utilised to their limits. Information and communication technology has given power technology a strong impulse. Power electronic technology allows network managers and operators to better guide the energy flow. It therefore also contributes to a more rapid transition to a durable energy supply. For example, the application of power electronics in network-integrated decentralised generators such as micro-CHP, wind turbines and solar cells increases the ability to intervene on an extremely local level in an intelligent manner. This increased application and penetration of grid connected power electronics also inevitably increases the demand for research, knowledge and testing of the behaviour of the equipment when integrated into the grid. (orig.)

  16. Measurements of isocenter path characteristics of the gantry rotation axis with a smartphone application

    Schiefer, H., E-mail:; Peters, S.; Plasswilm, L. [Klinik für Radio-Onkologie, Kantonsspital St.Gallen, Rorschacherstrasse 107, St.Gallen CH-9007 (Switzerland); Ingulfsen, N.; Kluckert, J. [Kantonsschule am Burggraben St.Gallen, Burggraben 21, St.Gallen CH-9000 (Switzerland)


    Purpose: For stereotactic radiosurgery, the AAPM Report No. 54 [AAPM Task Group 42 (AAPM, 1995)] requires the overall stability of the isocenter (couch, gantry, and collimator) to be within a 1 mm radius. In reality, a rotating system has no rigid axis and thus no isocenter point which is fixed in space. As a consequence, the isocenter concept is reviewed here. It is the aim to develop a measurement method following the revised definitions. Methods: The mechanical isocenter is defined here by the point which rotates on the shortest path in the room coordinate system. The path is labeled as “isocenter path.” Its center of gravity is assumed to be the mechanical isocenter. Following this definition, an image-based and radiation-free measurement method was developed. Multiple marker pairs in a plane perpendicular to the assumed gantry rotation axis of a linear accelerator are imaged with a smartphone application from several rotation angles. Each marker pair represents an independent measuring system. The room coordinates of the isocenter path and the mechanical isocenter are calculated based on the marker coordinates. The presented measurement method is by this means strictly focused on the mechanical isocenter. Results: The measurement result is available virtually immediately following completion of measurement. When 12 independent measurement systems are evaluated, the standard deviations of the isocenter path points and mechanical isocenter coordinates are 0.02 and 0.002 mm, respectively. Conclusions: The measurement is highly accurate, time efficient, and simple to adapt. It is therefore suitable for regular checks of the mechanical isocenter characteristics of the gantry and collimator rotation axis. When the isocenter path is reproducible and its extent is in the range of the needed geometrical accuracy, it should be taken into account in the planning process. This is especially true for stereotactic treatments and radiosurgery.

  17. Application of mobile GIS in special equipment inspection based on PDA

    Chen, Zhirong; Xu, Caijiang


    This paper discusses how to apply the mobile GIS technology to the common special equipment inspection business to meet the requirements of efficient management. The concepts of "special equipment" and "mobile GIS" are introduced at beginning. Then we analyze the business background and the present technique research; put forward a mobile GIS solution apply to special equipment inspection. A Special Equipment Inspection System is designed independently. The system architecture and database structure are discussed in detail. In the mobile environment, three key technologies are especially discussed in the paper, such as the interface design adapt to PDA device, data alternate mechanism and other embedded development attentions. The system has been used in Hangzhou Bureau of Quality and Technical Supervision for special equipment management, and gotten good result. So the requirements of scientifically manage the special equipment and establish e-government are completed met.

  18. Application of Pressure Equipment Standard at nuclear power plants; Aplicacion del Reglamento de Equipos a Presion a las centrales nucleares

    Mostaza, J. M.


    Regarding with the paper presented on 9{sup t}h June 2011 referred to the Industrial Security standard in Nuclear Plants, it was about the application of Pressure Equipment standard to mentioned Nuclear Plants, this article is an extract of the paper going to be exposed. (Author)

  19. HiGate (High Grade Anti-Tamper Equipment Prototype and Application to e-Discovery

    Yui Sakurai


    Full Text Available These days, most data is digitized and processed in various ways by computers. In the past, computer owners were free to process data as desired and to observe the inputted data as well as the interim results. However, the unrestricted processing of data and accessing of interim results even by computer users is associated with an increasing number of adverse events. These adverse events often occur when sensitive data such as personal or confidential business information must be handled by two or more parties, such as in the case of e-Discovery, used in legal proceedings, or epidemiologic studies. To solve this problem, providers encrypt data, and the owner of the computer performs decoding in the memory for encrypted data. The computer owner can be limited to performing only certain processing of data and to observing only the final results. As an implementation that uses existing technology to realize this solution, the processing of data contained in a smart card was considered, but such an implementation would not be practical due to issues related to computer capacity and processing speed. Accordingly, the authors present the concept of PC-based High Grade Anti-Tamper Equipment (HiGATE, which allows data to be handled without revealing the data content to administrators or users. To verify this concept, an e-Discovery application on a prototype was executed and the results are reported here.

  20. Rotating flow

    Childs, Peter R N


    Rotating flow is critically important across a wide range of scientific, engineering and product applications, providing design and modeling capability for diverse products such as jet engines, pumps and vacuum cleaners, as well as geophysical flows. Developed over the course of 20 years' research into rotating fluids and associated heat transfer at the University of Sussex Thermo-Fluid Mechanics Research Centre (TFMRC), Rotating Flow is an indispensable reference and resource for all those working within the gas turbine and rotating machinery industries. Traditional fluid and flow dynamics

  1. Applications of single-qubit rotations in quantum public-key cryptography

    Nikolopoulos, Georgios M.


    We discuss cryptographic applications of single-qubit rotations from the perspective of trapdoor one-way functions and public-key encryption. In particular, we present an asymmetric cryptosystem whose security relies on fundamental principles of quantum physics. A quantum public key is used for the encryption of messages while decryption is possible by means of a classical private key only. The trapdoor one-way function underlying the proposed cryptosystem maps integer numbers to quantum states of a qubit and its inversion can be infeasible by virtue of the Holevo’s theorem.

  2. Application of rotational atherectomy in the drug-eluting stent era

    Chun-Chi Chen; I-Chang Hsieh


    Rotational atherectomy (RA) was introduced in the interventional arena in 1988 as a dedicated device for calcified lesions. Due to the complexity of the technique, the development of alternative methods such as the cutting balloon procedure, and the high restenosis rate of subsequent bare metal stenting in long lesions, its use had later declined. However, with the increasing use of drug-eluting stents (DES) and the aggressive treatment of longer lesions, the number of procedure performed with RA has increased significantly again in recent years. In this article, we reviewed the application of RA in DES era.

  3. Geodesic equations in the static and rotating dilaton black holes: Analytical solutions and applications

    Soroushfar, Saheb; Saffari, Reza; Sahami, Ehsan


    In this paper, we consider the timelike and null geodesics around the static (GMGHS, magnetically charged GMGHS, electrically charged GMGHS) and the rotating (Kerr-Sen dilaton-axion) dilaton black holes. The geodesic equations are solved in terms of Weierstrass elliptic functions. To classify the trajectories around the black holes, we use the analytical solution and effective potential techniques and then characterize the different types of the resulting orbits in terms of the conserved energy and angular momentum. Also, using the obtained results we study astrophysical applications.

  4. Review of the Usefulness of Various Rotational Seismometers with Laboratory Results of Fibre-Optic Ones Tested for Engineering Applications

    Leszek R. Jaroszewicz


    Full Text Available Starting with descriptions of rotational seismology, areas of interest and historical field measurements, the fundamental requirements for rotational seismometers for seismological and engineering application are formulated. On the above basis, a review of all existing rotational seismometers is presented with a description of the principles of their operation as well as possibilities to fulfill formulated requirements. This review includes mechanical, acoustical, electrochemical and optical devices and shows that the last of these types are the most promising. It is shown that optical rotational seismometer based on the ring-laser gyroscope concept is the best for seismological applications, whereas systems based on fiber-optic gyroscopes demonstrate parameters which are also required for engineering applications. Laboratory results of the Fibre-Optic System for Rotational Events & Phenomena Monitoring using a small 1-D shaking table modified to generate rotational excitations are presented. The harmonic and time-history tests demonstrate its usefulness for recording rotational motions with rates up to 0.25 rad/s.

  5. In-process water quality measurement equipment applications; Aplicaciones de equipos de medida en proceso para la calidad del agua

    Serrano, E.


    This article describes applications providing real-time measurement of the parameters necessary for analysing and controlling water quality. The purpose of these applications is to monitor, protect and control the treatment carried out in a waste water treatment plant, in a drinking water treatment plant, to control a factory's water quality, to control the discharge of a factory and to control the quality of surface water. The waste water treatment plant applications include protection against toxicity load peaks, control of the nitrification-denitrification process, monitoring of the sludge levels in the reactor, real-time determination of organic contamination, control of the physicochemical phosphorus elimination process and monitoring and control of the quality of the plant's effluent. Also worthy of special attention is the use of this equipment in determining water quality indices for rivers and reservoirs, the characterisation of factory discharges and control of the eutrophication process. The decisive factors in choosing equipment of this kind are that it should be suitable for the application in question and that the maintenance costs involved, particularly in regard to reagents and time, are not too high. It is also necessary to have a technical service with adequate expertise in relation to such equipment and applications. (Author)

  6. Simulation study of irradiated Si sensors equipped with metal- overhang for applications in LHC environment

    Chatterji, Sudeep; Bhardwaj, Ashutosh; Srivastava-Ajay, K; Kumar, Ashish; Jha, Manoj Kumar; Shivpuri, R K; Khanna, S L


    The performance of metal-overhang (MO) equipped silicon micro-strip sensors, after irradiation for the preshower detector to be used in the Compact Muon Solenoid (CMS) experiment at the Large Hadron Collider (LHC), CERN, has been studied through simulations. Detailed calculations using Hamburg model have allowed the parameterization of these effects and helped to simulate the operation scenario of MO equipped sensors over ten years of LHC operation. The utility of overhanging metal extension as junction termination technique after space charge sign inversion (SCSI) has been explored in detail for the first time in this work. Several interesting results like a shift in the optimal oxide thickness in MO equipped structures after irradiation have been reported. The comparison of dielectric and semi-insulator passivated MO equipped structures after irradiation has been studied. Also, the impact of various crucial geometrical parameters like device depth (W//N), width of back N **+ layer used for ohmic contact (W/...

  7. 30 CFR 18.81 - Field modification of approved (permissible) equipment; application for approval of modification...


    ... TESTING, EVALUATION, AND APPROVAL OF MINING PRODUCTS ELECTRIC MOTOR-DRIVEN MINE EQUIPMENT AND ACCESSORIES Machines Assembled With Certified or Explosion-Proof Components, Field Modifications of Approved Machines... and Certification Center, 765 Technology Drive, Triadelphia, WV 26059. (b) Proposed...

  8. PSF Rotation with Changing Defocus and Applications to 3D Imaging for Space Situational Awareness

    Prasad, S.; Kumar, R.


    different focal depths have shown remarkable robustness of our rotating-PSF approach to achieve good transverse and longitudinal resolution even for moderate SNR. Additionally, the work seeks to clarify an important theoretical issue about 3D imaging, namely the detailed nature of the interplay between transverse and longitudinal resolutions, including 3D generalizations of the space-bandwidth product (SBP) and its dependence on image noise. An underlying transport equation, which we shall derive and analyze, describes the trade-off between the transverse and longitudinal blur processes in a manner analogous to the diffractive spreading of a light beam that is transversely confined. This work has immediate applications for space-based surveillance, particularly for 3D mapping and tracking of space debris flying in the vicinity of important AF space assets. Working with a well corrected conventional imager, our 3D computational imager can acquire with high sensitivity and speed an extended focal volume in which individual objects of interest can be subsequently probed and imaged with high resolution over smaller 2D field segments. [1] S. Prasad, Rotating Point Spread Function by Pupil Phase Engineering, Opt. Lett., vol. 38, pp. 585-587 (2013)

  9. Application of FTA Method to Reliability Analysis of Vacuum Resin Shot Dosing Equipment


    Faults of vacuum resin shot dosing equipment are studied systematically and the fault tree of the system is constructed by using the fault tree analysis(FTA) method. Then the qualitative and quantitative analysis of the tree is carried out, respectively, and according to the results of the analysis, the measures to improve the system are worked out and implemented. As a result, the reliability of the equipment is enhanced greatly.

  10. Applicability of International Harvesting Equipment Productivity Studies in Maine, USA: A Literature Review

    Patrick Hiesl; Jeffrey G. Benjamin


    Harvesting equipment productivity studies have been conducted in many countries around the world spanning over 25 years. These studies have shown that many factors influence individual machine productivity. These factors include stand and site conditions, equipment configuration, management objectives, and operator experience. Productivity can increase or decrease with slight changes in any of these factors. This literature review also highlights the variety of experimental designs and data c...

  11. Melt-growth bulk superconductors and application to an axial-gap-type rotating machine

    Zhang, Yufeng; Zhou, Difan; Ida, Tetsuya; Miki, Motohiro; Izumi, Mitsuru


    The present manuscript addresses key issues in the course of our study of materials processing of bulk high-temperature superconductors, trapped flux and its application to a prototype axial-gap-type rotating machine. The TUMSAT group has conducted a series of studies since 2003 on the growth of GdBa2Cu3O7-δ bulk material and its application in a compact low-speed high-torque rotating machine. In the stage of material growth, gaining the advantage of a large motive torque density requires large integrated flux in the motor/generators. A large grain surface might be required with sophisticated techniques for the melt-growth texture in the bulk with optimal flux pinning. In the second stage, the in situ magnetization procedure for bulk superconductors in the applied machine is a crucial part of the technology. Pulsed current excitation by using an armature copper winding has magnetized field pole bulks on the rotor. The axial-gap flux synchronous machine studied in the past decade is a condensed technology and indicates that further scientific development is required for a future compact machine to be superior to conventional ones in accordance with the cryogenic periphery and flux stabilization.

  12. 50 CFR 23.65 - What factors are considered in making a finding that an applicant is suitably equipped to house...


    ... finding that an applicant is suitably equipped to house and care for a live specimen? 23.65 Section 23.65... an applicant is suitably equipped to house and care for a live specimen? (a) Purpose. Under Article... house and care for them. (b) General principles. We will follow these general principles in making...

  13. Self-referenced, microdegree, optical rotation polarimeter for biomedical applications: an analysis

    Weissman, Zeev; Goldberg, Doron


    We comprehensively analyze the performance of a type of optical rotation (OR) polarimeter, which has been designed from the outset to fit the special requirements of two major applications: general chiral detection during the separation of optical isomers by high-pressure liquid chromatography systems in the pharmaceutical industry, and monitoring of glucose in the interstitial fluid of diabetics by a fully implanted long-term optical sensor. Both very demanding applications call for an OR polarimeter that can be miniaturized while maintaining high resolution and accuracy in the microdegree range in the face of considerable noise from various sources. These two characteristics-miniature size and immunity to noise-set this polarimeter apart from the traditional OR polarimeters currently in use, which are both bulky and very susceptible to noise. The following detailed analysis demonstrates the advantages of this polarimeter and its potential as an analytic and diagnostic tool.

  14. Application of ring lasers to determine the directions to the poles of Earth's rotation

    Golyaev, Yu D; Kolbas, Yu Yu [Open Joint-Stock Company ' M.F. Stel' makh Polyus Research and Development Institute' , Moscow (Russian Federation)


    Application of a ring laser to determine the directions to the poles of Earth's rotation is considered. The maximum accuracy of determining the directions is calculated, physical and technical mechanisms that limit the accuracy are analysed, and the instrumental errors are estimated by the example of ring He - Ne lasers with Zeeman biasing. (laser applications and other topics in quantum electronics)

  15. Advance of Hazardous Operation Robot and its Application in Special Equipment Accident Rescue

    Zeng, Qin-Da; Zhou, Wei; Zheng, Geng-Feng

    A survey of hazardous operation robot is given out in this article. Firstly, the latest researches such as nuclear industry robot, fire-fighting robot and explosive-handling robot are shown. Secondly, existing key technologies and their shortcomings are summarized, including moving mechanism, control system, perceptive technology and power technology. Thirdly, the trend of hazardous operation robot is predicted according to current situation. Finally, characteristics and hazards of special equipment accident, as well as feasibility of hazardous operation robot in the area of special equipment accident rescue are analyzed.

  16. The versatile application of cervicofacial and cervicothoracic rotation flaps in head and neck surgery

    Liu Fa-yu


    Full Text Available Abstract Background The large defects resulting from head and neck tumour surgeries present a reconstructive challenge to surgeons. Although numerous methods can be used, they all have their own limitations. In this paper, we present our experience with cervicofacial and cervicothoracic rotation flaps to help expand the awareness and application of this useful system of flaps. Methods Twenty-one consecutive patients who underwent repair of a variety of defects of the head and neck with cervicofacial or cervicothoracic flaps in our hospital from 2006 to 2009 were retrospectively analysed. Statistics pertaining to the patients' clinical factors were gathered. Results Cheek neoplasms are the most common indication for cervicofacial and cervicothoracic rotation flaps, followed by parotid tumours. Among the 12 patients with medical comorbidities, the most common was hypertension. Defects ranging from 1.5 cm × 1.5 cm to 7 cm × 6 cm were reconstructed by cervicofacial flap, and defects from 3 cm × 2 cm to 16 cm × 7 cm were reconstructed by cervicothoracic flap. The two flaps also exhibited versatility in these reconstructions. When combined with the pectoralis major myocutaneous flap, the cervicothoracic flap could repair through-and-through cheek defects, and in combination with a temporalis myofacial flap, the cervicofacial flap was able to cover orbital defects. Additionally, 95% patients were satisfied with their resulting contour results. Conclusions Cervicofacial and cervicothoracic flaps provide a technically simple, reliable, safe, efficient and cosmetic means to reconstruct defects of the head and neck.


    M.A. Ebadian, Ph.D.


    The dismantlement of radioactively contaminated process equipment is a major concern during the D&D process. There are an estimated 1,200 buildings in the DOE-EM complex that will require the dismantlement of equipment and various metal structures. As buildings undergo the D&D process, this metallic equipment contaminated with radionuclides such as uranium and plutonium must be size-reduced before final disposal. A single information source comparing dismantlement technologies in the areas of safety, cost, and performance is needed by DOE managers and is not currently available. The selection of the appropriate technologies to meet the dismantlement objectives for a given site is a difficult process in the absence of comprehensive and comparable data. Choosing the wrong technology could result in increased exposure of personnel to contaminants and an increase in D&D project costs. The purpose of this investigation was to evaluate commercially available and innovative technologies for equipment dismantlement and provide a comprehensive source of information to the D&D community in the areas of technology performance, cost, and health and safety.

  18. Applications of Matrices Multiplication to Determinant and Rotations formulas in $\\setR^n$

    Goldvard, Alex


    This note deals with two topics of linear algebra. We give a simple and short proof of the multiplicative property of the determinant and provide a constructive formula for rotations. The derivation of the rotation matrix relies on simple matrix calculations and thus can be presented in an elementary linear algebra course. We also classify all invariant subspaces of equiangular rotations in 4D.

  19. Mechanized covering application in equipment surfaces; Aplicacao mecanizada de revestimento em superficies de equipamentos

    Abreu, Billy A. de; Broering, Carlos E. [Universidade Federal de Santa Catarina (UFSC), Florianopolis, SC (Brazil). Dept. de Engenharia Mecanica


    Facing such challenges, the main objective of this work is to develop automated equipment and new welding procedures to be used to repair tank reservoirs operating in corrosive media. The equipment is expected to be applied directly in the maintenance of petrochemical plants. The project consists on a mechanical displacement device, able to move along a flexible rail, which can be fixed to a concave or convex surface and fitting itself to the geometry. A transversal arm gives it a second movement ability, allowing oscillatory displacements and the exact positioning of the pistol. As it is widely known, the automated welding process results in a considerably increase in productivity and quality, when comparing to the hand made process. Therefore, knowing the parameters involved and adjusted the welding variables to the best values, it is expected to achieve welding free of imperfections, inconsistencies and errors, and able to be repetitive. (author)

  20. Standard Work Study in Physical Logistics Area: An Application of Automotive Equipment Manufacturer

    Çağla Özkardeş, Seda Erkılıç, Cansu Şakar, Cansu Aras, Aslı Aksoy* , Nursel Öztürk


    Products are transported from depot to workstations and between workstations by milk-run vehicles in an automotive equipment manufacturer’s plant. Milk-run operators were completing routes earlier than anticipated time for each path in current state, and, also, transported quantities were non-standard. Manufacturer aims to optimization and standardization of milk-run tours. This paper presents suggestions to get over existing problems of a manufacturer. Finally...

  1. Design and Application of an Expert System for Equipment Maintenance and Forecast

    WANG Jian; PAN Kai-long; SHEN Yun-feng; LI Jie


    The maintenance and forecast expert system of equipment based on Artificial Neural Network is composed of control, measure, failure forecast, execution, data processing module and database. The data processing module obtains the change of the controlled objects′ structure and parameters, then takes correspondent measures according to the examination and diagnosis information. The failure forecast module finds the control system fault, separates the fault symptom location, tells the fault kind, estimates the magnitude and time of the fault, and finally makes evaluation and decision.

  2. Mobile Information Collection Application: Water Equipment Tracker (MICA:WET) Tool


    Processor Unit TEMF Tactical Equipment Maintenance Facility TR Technical Report TWDB Texas Water Development Board UPH Unaccompanied Personnel...1731 Trans Unaccompanied Personnel Housing ( UPH ) Advanced Individual Training (AIT) 4109 Consol Open Din (metered) 1789 AIT Barrack 10:30-12:00...1732 Trans UPH AIT 5268 Car Wash 470 Admin Gen Purpose Lunch Break 1:30-3:30 1784 DFAC 11480 Tech Eq Maintenance Facility 1607 Museum 2:30-3:30

  3. Application of Rotating Magnetic Fields to THM Growth Process: Te-CdTe

    LeClair, Mark; Worlikar, Ani; Motakef, Shariar; Gillies, Donald C.


    The numerical simulation of ongoing traveling heater method (THM) solution growth experiments of CdTe from Te solvent and the influence of a Rotating Magnetic Field (RMF) on control of convection in the solution zone is presented. The application of RMF is pursued as a means to actively control thermo-solutal convection in the solution zone which otherwise would be dominated by buoyancy forces. Numerical simulation and scaling analysis are used to generate a flow-regime map demarcating the boundary separating the buoyancy- and RMF-driven convection in the solution zone. Results indicate that whereas at low gravity levels the application of RMF can completely overwhelm buoyancy-induced convection, at normal gravity levels the successful control of convection by RMF requires use of fairly thin solvent zones. Simulation results also indicate that field strengths required to dominate natural convection on earth may lead to instabilities and transition to turbulence, and an associated deleterious effect on the quality of grown crystals. These and other simulations results are discussed in reference to experimental evidence.

  4. [The application of ISO 9000 quality control system in the medical equipment management].

    Ma, Qiao-yun


    This paper expounds the importance of the application of ISO 9000 quality control system in hospitals, introduces the program files and the relavant software established for its application, and gives its effective results.

  5. Application of Oversampling to obtain the MTF of Digital Radiology Equipment.

    Narváez, M.; Graffigna, J. P.; Gómez, M. E.; Romo, R.


    Within the objectives of theproject Medical Image Processing for QualityAssessment ofX Ray Imaging, the present research work is aimed at developinga phantomX ray image and itsassociated processing algorithms in order to evaluatethe image quality rendered by digital X ray equipment. These tools are used to measure various image parameters, among which spatial resolution shows afundamental property that can be characterized by the Modulation Transfer Function (MTF)of an imaging system [1]. After performing a thorough literature surveyon imaging quality control in digital X film in Argentine and international publications, it was decided to adopt for this work the Norm IEC 62220 1:2003 that recommends using an image edge as a testingmethod. In order to obtain the characterizing MTF, a protocol was designedfor unifying the conditions under which the images are acquired for later evaluation. The protocol implied acquiring a radiography image by means of a specific referential technique, i.e. referred either to voltage, current, time, distance focus plate (/film?) distance, or other referential parameter, and to interpret the image through a system of computed radiology or direct digital radiology. The contribution of the work stems from the fact that, even though the traditional way of evaluating an X film image quality has relied mostly on subjective methods, this work presents an objective evaluative toolfor the images obtained with a givenequipment, followed by a contrastive analysis with the renderings from other X filmimaging sets.Once the images were obtained, specific calculations were carried out. Though there exist some methods based on the subjective evaluation of the quality of image, this work offers an objective evaluation of the equipment under study. Finally, we present the results obtained on different equipment.

  6. Future trends in metal forming—equipment, materials and processes in automotive applications

    Hitz, D.; Duggirala, R.


    Global competition in the automotive market has made a significant impact in the materials, processes, tools, and equipment used to make components. Steels are being replaced by other materials, such as aluminum, composites, and plastics, that meet the demand for a higher performance per weight ratio. From a processing viewpoint, the customers demand production of parts to near-net shape with little or no machining. Competition in business depends on understanding the needs of the customer in the coming years in the area of metal forming. A workshop was conducted using a novel approach to address the above issue. This presentation describes the approach and the results of the study.

  7. Standard Work Study in Physical Logistics Area: An Application of Automotive Equipment Manufacturer

    Çağla Özkardeş, Seda Erkılıç, Cansu Şakar, Cansu Aras, Aslı Aksoy* , Nursel Öztürk


    Full Text Available Products are transported from depot to workstations and between workstations by milk-run vehicles in an automotive equipment manufacturer’s plant. Milk-run operators were completing routes earlier than anticipated time for each path in current state, and, also, transported quantities were non-standard. Manufacturer aims to optimization and standardization of milk-run tours. This paper presents suggestions to get over existing problems of a manufacturer. Finally, workload acquisition was obtained with the results of the suggestions.

  8. Dosimetric evaluation of multilumen intracavitary balloon applicator rotation in high-dose-rate brachytherapy for breast cancer.

    Kim, Yongbok; Trombetta, Mark G


    The objective of this work is to evaluate dosimetric impact of multilumen balloon applicator rotation in high-dose-rate (HDR) brachytherapy for breast cancer. Highly asymmetrical dose distribution was generated for patients A and B, depending upon applicator proximity to skin and rib. Both skin and rib spacing was ≤ 0.7 cm for A; only rib spacing was ≤ 0.7 cm for B. Thirty-five rotation scenarios were simulated for each patient by rotating outer lumens every 10° over ± 180° range with respect to central lumen using mathematically calculated rotational matrix. Thirty-five rotated plans were compared with three plans: 1) original multidwell multilumen (MDML) plan, 2) multidwell single-lumen (MDSL) plan, and 3) single-dwell single-lumen (SDSL) plan. For plan comparison, planning target volume for evaluation (PTV_EVAL) coverage (dose to 95% and 90% volume of PTV_EVAL) (D95 and D90), skin and rib maximal dose (Dmax), and normal breast tissue volume receiving 150% (V150) and 200% (V200) of prescribed dose (PD) were evaluated. Dose variation due to device rotation ranged from -5.6% to 0.8% (A) and -6.5% to 0.2% (B) for PTV_EVAL D95; -5.2% to 0.4% (A) and -4.1% to 0.7% (B) for PTV_EVAL D90; -2.0 to 18.4% (A) and -7.8 to 17.5% (B) for skin Dmax; -11.1 to 22.8% (A) and -4.7 to 55.1% (B) of PD for rib Dmax, respectively. Normal breast tissue V150 and V200 variation was < 1.0 cc, except for -0.1 to 2.5cc (B) of V200. Furthermore, 30° device rotation increased rib Dmax over 145% of PD: 152.9% (A) by clockwise 30° rotation and 152.5% (B) by counterclockwise 30° rotation. For a highly asymmetric dose distribution, device rotation can outweigh the potential benefit of improved dose shaping capability afforded by multilumen and make dosimetric data worse than single-lumen plans unless it is properly corrected.

  9. Use of riser tube rotation equipment in the Emlichheim and Landau petroleum mines of Wintershall AG Erdoelwerke; Einsatz von Steigrohrdrehvorrichtungen in den Erdoelfoerderbetrieben Emlichheim und Landau der Wintershall AG Erdoelwerke

    Caspari, R. [Wintershall AG Erdoelwerke, Emlichheim (Germany)


    Riser tube rotation equipment has been in use in the Emlichheim and Landau petroleum wells since 1994 in order to ensure longer life of the riser tubes. (orig.) [Deutsch] In den von Wintershall operierten Erdoelfoerderbetrieben Emlichheim und Landau werden ca. 90% der Bohrungen mit Gestaengetiefpumpen gefoerdert. Aufgrund der lagerstaettentechnischen Gegebenheiten, der Thermalmassnahmen in Emlichheim und der Infrastruktur der Betriebe koennen andere Foerderhilfsmittel wie Tauchkreiselpumpe, Excenterschneckenpumpe oder Gasliften nur bedingt zum Einsatz kommen. Ein wesentlicher Faktor fuer den wirtschaftlichen Betrieb dieser Bohrungen sind die Aufwaeltigungen zur Beseitigung von Schaeden an der Tiefpumpe, dem Pumpgestaenge und den Steigrohren. Waehrend die Einsatzdauer der Tiefpumpen und des Pumpgestaenges durch hoeherwertige Materialguete und geeignete Optimierungsmassnahmen erhoeht werden konnten, sind die Standzeiten der Steigrohre nahezu unveraendert geblieben. Um diese zu erhoehen, werden in den Erdoelfoerderbetrieben Emlichheim und Landau seit April 1994 Steigrohrdrehvorrichtungen eingesetzt. (orig.)

  10. Equipment Parameters Application Solution Based on the Equipment Centralized Monitoring System and the Equipment Operation and Maintenance Platform%基于设备集中监控系统和设备运维平台的设备参数应用解决方案



    ATC equipment parameters have a great significance to equipment normal operation for the reason that ATC equipment pa-rameters reflect the equipment status. Recording relevant parameters of the daily equipment operation status is an important work of the e-quipment maintenance personnel. Currently, there are many problems such as the high maintenance costs of equipment parameters and low efficiency of manual records, even some missing, mistaken fill records or inevitably appearing non-standard records. In order to solve these problems, this paper presents an equipment parameters application solution based on the equipment centralized monitoring system and the equipment operation and maintenance platform, considering the Central South ATC equipment centralized monitoring system and equipment operation and maintenance platform for the analysis and processing of the equipment parameters, providing a more intuitive graphical showing way for the maintenance personnel, and providing a more intuitive and effective analytical tools. This equipment pa-rameters application solution can help to improve the reliability and accuracy of maintenance of equipment parameters, and reduce costs of equipment operation and maintenance.%空管设备参数反映设备的运行状况,对设备的正常运行具有重要意义。记录设备日常运行的相关参数是设备维护人员的重要工作内容,设备参数的维护成本高,人工记录效率低,漏填、误填或记录不规范的情况不可避免出现等,为了解决这些问题,本文提出一种基于设备集中监控系统和设备运行维护平台的设备参数应用解决方案,综合考虑中南空管设备集中监控系统和设备运行维护平台,对设备参数进行分析处理,以更直观的图形方式展现给使用人员,提供直观有效的分析手段,有利于提高设备参数维护的可靠性和准确性、降低设备运维成本。

  11. Optimal Statistical Operations for 3-Dimensional Rotational Data: Geometric Interpretations and Application to Prosthesis Kinematics

    Øyvind Stavdahl


    Full Text Available Rotational data in the form of measured three-dimensional rotations or orientations arise naturally in many fields of science, including biomechanics, orthopaedics and robotics. The cyclic topology of rotation spaces calls for special care and considerations when performing statistical analysis of rotational data. Relevant theory has been developed during the last three decades, and has become a standard tool in some areas. In relation to the study of human kinematics and motion however, these concepts have hardly been put to use. This paper gives an introduction to the intricacies of three-dimensional rotations, and provides a thorough geometric interpretation of several approaches to averaging rotational data A set of novel, simple operators is presented. Simulations and a prosthetics-related real-world example involving wrist kinematics illuminate important aspects of the results. Finally generalizations and related subjects for further research are suggested.

  12. Handbook of thin film deposition processes and techniques principles, methods, equipment and applications

    Seshan, Krishna


    New second edition of the popular book on deposition (first edition by Klaus Schruegraf) for engineers, technicians, and plant personnel in the semiconductor and related industries. This book traces the technology behind the spectacular growth in the silicon semiconductor industry and the continued trend in miniaturization over the last 20 years. This growth has been fueled in large part by improved thin film deposition techniques and the development of highly specialized equipment to enable this deposition. The book includes much cutting-edge material. Entirely new chapters on contamination and contamination control describe the basics and the issues-as feature sizes shrink to sub-micron dimensions, cleanliness and particle elimination has to keep pace. A new chapter on metrology explains the growth of sophisticated, automatic tools capable of measuring thickness and spacing of sub-micron dimensions. The book also covers PVD, laser and e-beam assisted deposition, MBE, and ion beam methods to bring together a...

  13. Application of ATP bioluminescence for evaluation of surface cleanliness of milking equipment.

    Vilar, M J; Rodríguez-Otero, J L; Diéguez, F J; Sanjuán, M L; Yus, E


    The ATP bioluminescence method was used to evaluate the cleanliness of milking equipment surfaces (teat cup rubbers, teat dip containers, milk receivers, and pipeline joints) in dairy farms in Galicia (northwest Spain) with parlour, pipeline tie-stall or bucket tie-stall milking systems. The cleanest surfaces were teat cup rubbers. The use of non-chlorinated water for cleaning, and of pipeline or bucket tie-stall milking systems, was associated with high ATP bioluminescence values. However, ATP bioluminescence values only explained 12% of the variability in bulk-tank bacterial count; this is attributable to the importance of other factors (notably the correct functioning of the tank cooling system) for maintenance of low bacterial count.

  14. The core pipeline equipment localization process and application prospects in China

    Zejun Huang


    Full Text Available To improve the economic efficiency of gas pipelines, core equipment such as compressor sets and large-diameter valves must be localized. For this purpose, in alliance with other related enterprises, PetroChina Company Limited established an equipment localization R&D system and a new product testing system and successfully developed a 20 MW class motor-driven compressor set, a 30 MW-class gas turbine-driven compressor unit, and a high-pressure and large-diameter welded ball valve. First, the motor-driven compressor R&D focuses on three main units. The developed frequency-control device structure is a cascaded multilevel with a capacity of 25 MVA. The developed anti-explosion dynamo with a motor speed of 4800 rpm can produce a power of 22 MW. The developed compressor is PCL800 with features of a high efficiency and a wide flow-operating point-adjustment range. Second, there are two steps of the R&D of a GT-driven compressor unit (product A + product B: auxiliary supporting systems and control systems are developed for the imported GT25000 gas turbine, together with China-made compressors, to constitute product A; simultaneously, the R&D of product B of a gas turbine is carried out, which would replace the imported one. Third, aiming to solve the problems of sealing and welding, we developed the high-pressure and large-diameter all-welded ball valves in full replace of the same kind of imported products with three different sizes: NPS40 Class 600, NPS48 Class 600, and NPS48 Class 900.

  15. Effect of nanofluid on thermal performance of heat pipe with two evaporators; application to satellite equipment cooling

    Mashaei, P. R.; Shahryari, M.


    A study on the behavior of nanofluid in a cylindrical heat pipe with two heat sources is performed to analyze the nanofluid application in heat-dissipating satellite equipment cooling. Pure water, Al2O3-water and TiO2-water nanofluids are used as working fluids. An analytical modeling is presented to predict the wall temperature profile for the heat pipe assuming saturated vapor and conduction heat transfer for porous media and wall, respectively. The effects of particle concentration levels (φ=0 (distilled water), 2, 4, and 8%), particle diameters (dp=10, 20, and 40 nm) on the local wall temperature, heat transfer coefficient, thermal resistance, and the size of the heat pipe are investigated. It is observed that the better wall temperature uniformity can be achieved using nanofluid which results in lower temperature difference between evaporators and condenser sections. Results reveal that applying nanoparticle with smaller size and higher concentration level increases heat transfer coefficient remarkably by reducing thermal resistance of saturated porous media. It is also found that the presence of nanoparticles in water can lead to a reduction in weight of heat pipe, and thus satellite, under nearly identical condition. The findings of this paper prove the potential of nanofluid in satellite equipment cooling application.

  16. Lie algebraic description of the rotational spectra of linear triatomic molecules: application to CS 2

    Meng, Qingtian; Guan, Daren; Ding, Shiliang


    An algebraic construction of a Hamiltonian is used to study the rotational spectra of linear triatomic molecules on the basis of the subgroup chain of symmetry U1(4)⊗ U2(4). After considering the rotation-vibration interaction which gives the l splittings, the eigenvalue expression of the Hamiltonian has a form of the term value equation commonly used in the calculation of molecular spectra. The method is applied to calculate the rotational energy levels of vibrational transitions (0 1 10-0 0 00) for C 34S 2, (1 1 13-0 1 10) and (1 0 03-0 0 00) for C 32S 2. The obtained rotational constants can represent the rotational spectra of the three bands with small root-mean-square frequency errors. The results show that the algebraic Hamiltonian can provide an alternative description of rovibrational spectra for linear triatomic molecules.

  17. Persuasion to use personal protective equipment in constructing subway stations: application of social marketing.

    Shamsi, Mahmoud; Pariani, Abbas; Shams, Mohsen; Soleymani-nejad, Marzieh


    To study the effects of an intervention based on social marketing to persuade workers to use personal protective equipment (PPE) in constructing subway stations in Isfahan, Iran. This was a quasi-experimental study. Two stations were selected as intervention and control groups. Intervention was designed based on results of a formative research. A free package containing a safety helmet with a tailored message affixed to it, mask and gloves and an educational pamphlet was delivered to the intervention group. After 6 weeks, behaviours in the intervention and control stations were measured using an observational checklist. After the intervention, the percentage of workers who used PPE at the intervention station increased significantly. OR for helmet and mask usage was 7.009 and 2.235, respectively, in the intervention group. Social marketing can be used to persuade workers to use PPE in the workplace. Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to

  18. Effects of crop rotation, tillage, and fertilizer applications on sorghum head insects.

    Chilcutt, Charles F; Matocha, John E


    Rotations, tillage, and fertilizer treatments can affect yield, costs, and profitability in sorghum, Sorghum bicolor (L.) Moench, depending on their effects on pests. Rotation or planting different crops reduces soil erosion and pests that build up when a field is planted to the same crop each year. Minimum tillage reduces the number of trips over a field, lessening soil compaction and reducing costs. We examined the effects of fertilizer, tillage, and rotation with cotton, Gossypium hirsutum L., on sorghum head insects during three sampling periods each year from 2000 to 2003. We found that fertilizer treatments did not affect pests or predators. Also, predators were unaffected by rotation and tillage, which some years affected Helicoverpa zea (Boddie) and Oebalus pugnax (F.), both pests that feed on developing sorghum kernels, thereby reducing yield. In 2000, H. zea densities were greater in continuous sorghum, regardless of tillage practice, than in sorghum-cotton rotation. However, in 2003, H. zea densities were greater in minimum tillage plots within sorghum- cotton rotation than minimum tillage plots within continuous sorghum. In 2000, in sorghum- cotton rotation, O. pugnax densities were greater in minimum tillage than conventional tillage plots, whereas in continuous sorghum the opposite was true, O. pugnax were greater in conventional tillage. Also, O. pugnax were greater in sorghum- cotton rotation than in continuous sorghum. In 2002, O. pugnax densities were greater in conventional than minimum tillage plots. These results suggest that rotation of sorghum with cotton can sometimes reduce H. zea, but this reduction may occur with increased density of O. pugnax. Also, reducing tillage may reduce O. pugnax in some instances.

  19. Formulation of the rotational transformation of wave fields and their application to digital holography.

    Matsushima, Kyoji


    Rotational transformation based on coordinate rotation in Fourier space is a useful technique for simulating wave field propagation between nonparallel planes. This technique is characterized by fast computation because the transformation only requires executing a fast Fourier transform twice and a single interpolation. It is proved that the formula of the rotational transformation mathematically satisfies the Helmholtz equation. Moreover, to verify the formulation and its usefulness in wave optics, it is also demonstrated that the transformation makes it possible to reconstruct an image on arbitrarily tilted planes from a wave field captured experimentally by using digital holography.

  20. Application of Lie algebraic method to the calculation of rotational spectra for linear triatomic molecules


    The Hamiltonian describing rotational spectra of linear triatomic molecules has been derived by using the dynamical Lie algebra of symmetry group U1(4)U,(4). After rovibrational interactions being considered, the eigenvalue expression of the Hamiltonian has the form of term value equation commonly used in spectrum analysis. The molecular rotational constants can be obtained by using the expression and fitting it to the observed lines. As an example, the rotational levels of v2 band for transition (0200-0110) of molecules N2O and HCN have been fitted and the fitting root-mean-square errors (RMS) are 0.00001 and 0.0014 cm-1, respectively.

  1. Rotational Viscosity in Linear Irreversible Thermodynamics and its Application to Neutron Stars

    Sandoval-Villalbazo, A; García-Colin, L S; Sandoval-Villalbazo, Alfredo; Garcia-Perciante, Ana; Garcia-Colin, LS


    A generalized analysis of the local entropy production of a simple fluid is used to show that, if intrinsic angular momentum is taken into account, rotational viscosity must arise in the linear non-equilibrium regime. As a consequence, the stress tensor of dense rotating matter, such as the one present in neutron stars, posseses a significant non-vansishing antisymmetrical part. A simple argument suggests that, due to the extreme magnetic fields present in neutron stars, the relaxation time associated to rotational viscosity is large (approx 10^{21} s). The formalism leads to generalized Navier-Stokes equations useful in neutron star physics which involve vorticity in the linear regime.

  2. An efficient rotation-free triangle and its application in cloth simulations

    Zhou, Yexin.; 周晔欣.


    In this thesis, an efficient rotation-free (RF) triangle is proposed and applied to drape/cloth simulations in which the cloth often under large displacements and rotations. The RF model is a class of thin plate/shell computational models possessing only 3 translational degrees of freedom per director whilst their domains of influence are larger than their domains of integration. An important advantage of RF models is that they do not use rotational degrees of freedom and, thus, are not plag...

  3. Principles and biophysical applications of single particle super-localization and rotational tracking

    Gu, Yan [Iowa State Univ., Ames, IA (United States)


    While conventional Single Particle Tracking (SPT) techniques acquire 2D or 3D trajectories of particle probes, we have developed Single Particle Orientation and Rotational Tracking (SPORT) techniques to extract orientation and rotational information. Combined with DIC microscopy, the SPORT technique has been applied in biophysical studies, including membrane diffusion and intracellular transport. The rotational dynamics of nanoparticle vectors on live cell membranes was recorded and its influence on the fate of these nanoparticle vectors was elucidated. The rotational motions of gold nanorods with various surface modifiers were tracked continuously at a temporal resolution of 5 ms under a DIC microscope. We found that the rotational behaviors of gold nanorod vectors are strongly related to their surface charge, specific surface functional groups, and the availability of receptors on cell membranes. The study of rotational Brownian motion of nanoparticles on cell membranes will lead to a better understanding of the mechanisms of drug delivery and provide guidance in designing surface modification strategies for drug delivery vectors under various circumstances. To characterize the rotation mode of surface functionalized gold nanorods on cell membranes, the SPORT technique is combined with the correlation analysis of the bright and dark DIC intensities. The unique capabilities of visualizing and understanding rotational motions of functionalized nanoparticles on live cell membranes allow us to correlate rotational and translational dynamics in unprecedented detail and provide new insights for complex membrane processes, including electrostatic interactions, ligand-receptor binding, and lateral (confined and hopping) diffusion of membrane receptors. Surface-functionalized nanoparticles interact with the membrane in fundamentally different ways and exhibit distinct rotational modes. The early events of particle-membrane approach and attachment are directly visualized

  4. Principles and biophysical applications of single particle super-localization and rotational tracking

    Gu, Yan

    While conventional Single Particle Tracking (SPT) techniques acquire 2D or 3D trajectories of particle probes, we have developed Single Particle Orientation and Rotational Tracking (SPORT) techniques to extract orientation and rotational information. Combined with DIC microscopy, the SPORT technique has been applied in biophysical studies, including membrane diffusion and intracellular transport. The rotational dynamics of nanoparticle vectors on live cell membranes was recorded and its influence on the fate of these nanoparticle vectors was elucidated. The rotational motions of gold nanorods with various surface modifiers were tracked continuously at a temporal resolution of 5 ms under a DIC microscope. We found that the rotational behaviors of gold nanorod vectors are strongly related to their surface charge, specific surface functional groups, and the availability of receptors on cell membranes. The study of rotational Brownian motion of nanoparticles on cell membranes will lead to a better understanding of the mechanisms of drug delivery and provide guidance in designing surface modification strategies for drug delivery vectors under various circumstances. To characterize the rotation mode of surface functionalized gold nanorods on cell membranes, the SPORT technique is combined with the correlation analysis of the bright and dark DIC intensities. The unique capabilities of visualizing and understanding rotational motions of functionalized nanoparticles on live cell membranes allow us to correlate rotational and translational dynamics in unprecedented detail and provide new insights for complex membrane processes, including electrostatic interactions, ligand-receptor binding, and lateral (confined and hopping) diffusion of membrane receptors. Surface-functionalized nanoparticles interact with the membrane in fundamentally different ways and exhibit distinct rotational modes. The early events of particle-membrane approach and attachment are directly visualized

  5. Principles and biophysical applications of single particle super-localization and rotational tracking

    Gu, Yan [Iowa State Univ., Ames, IA (United States)


    While conventional Single Particle Tracking (SPT) techniques acquire 2D or 3D trajectories of particle probes, we have developed Single Particle Orientation and Rotational Tracking (SPORT) techniques to extract orientation and rotational information. Combined with DIC microscopy, the SPORT technique has been applied in biophysical studies, including membrane diffusion and intracellular transport. The rotational dynamics of nanoparticle vectors on live cell membranes was recorded and its influence on the fate of these nanoparticle vectors was elucidated. The rotational motions of gold nanorods with various surface modifiers were tracked continuously at a temporal resolution of 5 ms under a DIC microscope. We found that the rotational behaviors of gold nanorod vectors are strongly related to their surface charge, specific surface functional groups, and the availability of receptors on cell membranes. The study of rotational Brownian motion of nanoparticles on cell membranes will lead to a better understanding of the mechanisms of drug delivery and provide guidance in designing surface modification strategies for drug delivery vectors under various circumstances. To characterize the rotation mode of surface functionalized gold nanorods on cell membranes, the SPORT technique is combined with the correlation analysis of the bright and dark DIC intensities. The unique capabilities of visualizing and understanding rotational motions of functionalized nanoparticles on live cell membranes allow us to correlate rotational and translational dynamics in unprecedented detail and provide new insights for complex membrane processes, including electrostatic interactions, ligand-receptor binding, and lateral (confined and hopping) diffusion of membrane receptors. Surface-functionalized nanoparticles interact with the membrane in fundamentally different ways and exhibit distinct rotational modes. The early events of particle-membrane approach and attachment are directly visualized

  6. Preparation and Application of TiO2 Nanotube Array Gas Sensor for SF6-Insulated Equipment Detection: a Review

    Zhang, Xiaoxing; Gui, Yingang; Dong, Xingchen


    Since Zwilling and co-workers first introduced the electrochemical anodization method to prepare TiO2 nanotubes in 1999, it has attracted a lot of researches due to its outstanding gas response and selectivity, making it widely used in gas detection field. This review presents an introduction to the sensor applications of TiO2 nanotube arrays (TNTAs) in sulfur hexafluoride (SF6)-insulated equipment, which is used to evaluate and diagnose the insulation status of SF6-insulated equipment by detecting their typical decomposition products of SF6: sulfur dioxide (SO2), thionyl fluoride (SOF2), and sulfuryl fluoride (SO2F2). The synthesis and sensing properties of TiO2 nanotubes are discussed first. Then, it is followed by discussing the theoretical sensing to the typical SF6 decomposition products, SO2, SOF2, and SO2F2, which analyzes the sensing mechanism at the molecular level. Finally, the gas response of pure and modified TiO2 nanotubes sensor to SO2, SOF2, and SO2F2 is provided according to the change of resistance in experimental observation.

  7. Program evaluation and its application to equipment based on super-efficiency DEA and gray relation projection method

    Linbing Tang; Dong Guo; Jie Wu; Qingmei Tan


    For the gray attributes of the equipment program and its difficulty to carry out the quantitative assessment of the equip-ment program information, the gray relation projection method is simply reviewed. Combining the super-data envelopment analysis (DEA) model and the gray system theory, a new super-DEA for measuring the weight is proposed, and a gray relation projection model is established to rank the equipment programs. Final y, this approach is used to evaluate the equipment program. The results are verified valid and can provide a new way for evaluating the equipment program.

  8. 精细化管理在医院医疗设备管理中的运用%Application of fine Management in Hospital Medical Equipment Management



    This article briefly outlines the importance of medical equipment archives management, analyzes the application of fine management in medical equipment archives management, in order to improve the management level of medical equipment archives.%简要概述了医疗设备档案管理的重要性,详细分析了精细化管理在医疗设备档案管理工作中的应用,以期提高医疗设备档案的管理水平.

  9. Interactive push-button: elaborations main automation and miscellaneous applications equipment statements of museums of science and technology

    Osmar Henrique Moura da Silva


    Full Text Available In Brazil there is a growing trend in the number of informal education settings such as Museums of Science and Technology (MCT and others them. A recent survey indicated about 190 of them in the country, considered a relatively small number to serve over five thousand municipalities. Indeed, this represents heterogeneous group, in that, together with environments, which comparatively are still in early stages of development and expansion of their interactive activities. This activities, recognized for this differences in relation of those formal education activities, are routinely canned out by the visitors from the perspective of free choice, by handling cranks or grip buttons. In this context, this work aims to contribute to those committed with the places of informal education touting major electronic devices that can be easily mounted to the coveted automation equipment interactive push-button, whose applicability in different direction are also discussed.

  10. Application of Microprocessor-Based Equipment in Nuclear Power Plants - Technical Basis for a Qualification Methodology

    Korsah, K.


    This document (1) summarizes the most significant findings of the ''Qualification of Advanced Instrumentation and Control (I&C) Systems'' program initiated by the Nuclear Regulatory Commission (NRC); (2) documents a comparative analysis of U.S. and European qualification standards; and (3) provides recommendations for enhancing regulatory guidance for environmental qualification of microprocessor-based safety-related systems. Safety-related I&C system upgrades of present-day nuclear power plants, as well as I&C systems of Advanced Light-Water Reactors (ALWRs), are expected to make increasing use of microprocessor-based technology. The Nuclear Regulatory Commission (NRC) recognized that the use of such technology may pose environmental qualification challenges different from current, analog-based I&C systems. Hence, it initiated the ''Qualification of Advanced Instrumentation and Control Systems'' program. The objectives of this confirmatory research project are to (1) identify any unique environmental-stress-related failure modes posed by digital technologies and their potential impact on the safety systems and (2) develop the technical basis for regulatory guidance using these findings. Previous findings from this study have been documented in several technical reports. This final report in the series documents a comparative analysis of two environmental qualification standards--Institute of Electrical and Electronics Engineers (IEEE) Std 323-1983 and International Electrotechnical Commission (IEC) 60780 (1998)--and provides recommendations for environmental qualification of microprocessor-based systems based on this analysis as well as on the findings documented in the previous reports. The two standards were chosen for this analysis because IEEE 323 is the standard used in the U.S. for the qualification of safety-related equipment in nuclear power plants, and IEC 60780 is its European counterpart. In addition, the IEC



    The concepts of “confining structure” and structure light areilluminated in this paper.A laser theodolite with three freedoms of rotation,which is aimed at “confining structure”,is developed.Various scanning modes and their mathematical models based on laser theodolite with three freedoms of rotation are discussed.According to the features of a huge object,,the structure light engineering surveying based on laser theodolite with three freedoms of rotation is determined as the main method in an actual application.The observation of four sound concrete posts and forced centering plates.Subsequently,it is transformed into the huge object coordinate system.The scanning mode with plumb plane is selected as the main mode in the whole work.And other assistant methods,such as close range photogrammetry and the method of using reflection sheet,are applied to the work of “scanning dead angle”.At last,a surveying accuracy estimation of this method is done and a surveying accuracy test is finished.It can be concluded that the structure light engineering surveying based on laser theodolite with three freedoms of rotation is considered to be an effective and applied method,and has many superiority to some other surveying methods in the work of surveying “confining structure”.

  12. Culturing and applications of rotating wall vessel bioreactor derived 3D epithelial cell models.

    Radtke, Andrea L; Herbst-Kralovetz, Melissa M


    Cells and tissues in the body experience environmental conditions that influence their architecture, intercellular communications, and overall functions. For in vitro cell culture models to accurately mimic the tissue of interest, the growth environment of the culture is a critical aspect to consider. Commonly used conventional cell culture systems propagate epithelial cells on flat two-dimensional (2-D) impermeable surfaces. Although much has been learned from conventional cell culture systems, many findings are not reproducible in human clinical trials or tissue explants, potentially as a result of the lack of a physiologically relevant microenvironment. Here, we describe a culture system that overcomes many of the culture condition boundaries of 2-D cell cultures, by using the innovative rotating wall vessel (RWV) bioreactor technology. We and others have shown that organotypic RWV-derived models can recapitulate structure, function, and authentic human responses to external stimuli similarly to human explant tissues (1-6). The RWV bioreactor is a suspension culture system that allows for the growth of epithelial cells under low physiological fluid shear conditions. The bioreactors come in two different formats, a high-aspect rotating vessel (HARV) or a slow-turning lateral vessel (STLV), in which they differ by their aeration source. Epithelial cells are added to the bioreactor of choice in combination with porous, collagen-coated microcarrier beads (Figure 1A). The cells utilize the beads as a growth scaffold during the constant free fall in the bioreactor (Figure 1B). The microenvironment provided by the bioreactor allows the cells to form three-dimensional (3-D) aggregates displaying in vivo-like characteristics often not observed under standard 2-D culture conditions (Figure 1D). These characteristics include tight junctions, mucus production, apical/basal orientation, in vivo protein localization, and additional epithelial cell-type specific properties

  13. [The Application of the Fault Tree Analysis Method in Medical Equipment Maintenance].

    Liu, Hongbin


    In this paper, the traditional fault tree analysis method is presented, detailed instructions for its application characteristics in medical instrument maintenance is made. It is made significant changes when the traditional fault tree analysis method is introduced into the medical instrument maintenance: gave up the logic symbolic, logic analysis and calculation, gave up its complicated programs, and only keep its image and practical fault tree diagram, and the fault tree diagram there are also differences: the fault tree is no longer a logical tree but the thinking tree in troubleshooting, the definition of the fault tree's nodes is different, the composition of the fault tree's branches is also different.

  14. Optimization of the Robotic Joint Equipped with Epicyloidal Gear and Direct Drive for Space Applications

    Seweryn, Karol; Grassmann, Kamil; Ciesielska, Monika; Rybus, Tomasz; Turek, Michal


    One of the most critical element in the orbital manipulators are kinematic joints. Joints must be adapted to work in tough conditions of space environment and must ensure the greatest efficiency and work without backlash. At the Space Mechatronics and Robotics Laboratory (LMRS) of the Space Research Centre, PAS our team designed and built a lightweight kinematic pair based on a new concept. The new concept is based on the epicycloid two-stage gearbox with torque motor. In this paper we have focused on optimization of the joint design for space application. The optimization was focused on the minimization of the mass and backlash effects and on maximizing the joint efficiency.

  15. Guidelines for the selection and application of tantalum electrolytic capacitors in highly reliable equipment

    Holladay, A. M.


    Guidelines are given for the selection and application of three types of tantalum electrolytic capacitors in current use in the design of electrical and electronic circuits for space flight missions. In addition, the guidelines supplement requirements of existing military specifications used in the procurement of capacitors. A need exists for these guidelines to assist designers in preventing some of the recurring, serious problems experienced with tantalum electrolytic capacitors in the recent past. The three types of capacitors covered by these guidelines are; solid, wet foil, and tantalum cased wet slug.

  16. Low-metallicity massive single stars with rotation. Evolutionary models applicable to I Zwicky 18

    Szécsi, D; Yoon, S -C; Sanyal, D; de Mink, S; Evans, C J; Dermine, T


    Massive rotating single stars with an initial metal composition appropriate for the dwarf galaxy I Zw 18 ([Fe/H]=$-$1.7) are modelled during hydrogen burning for initial masses of 9-300 M$_{\\odot}$ and rotational velocities of 0-900 km s$^{-1}$. Internal mixing processes in these models were calibrated based on an observed sample of OB-type stars in the Magellanic Clouds. Even moderately fast rotators, which may be abundant at this metallicity, are found to undergo efficient mixing induced by rotation resulting in quasi chemically-homogeneous evolution. These homogeneously-evolving models reach effective temperatures of up to 90 kK during core hydrogen burning. This, together with their moderate mass-loss rates, make them Transparent Wind Ultraviolet INtense stars (TWUIN star), and their expected numbers might explain the observed HeII ionizing photon flux in I Zw 18 and other low-metallicity HeII galaxies. Our slowly rotating stars above $\\sim$80 M$_{\\odot}$ evolve into late B- to M-type supergiants during c...

  17. A microscopic derivation of nuclear collective rotation-vibration model and its application to nuclei

    Gulshani, P.


    We derive a microscopic version of the successful phenomenological hydrodynamic model of Bohr-Davydov-Faessler-Greiner for collective rotation-vibration motion of an axially symmetric deformed nucleus. The derivation is not limited to small oscillation amplitude. The nuclear Schrodinger equation is canonically transformed to collective co-ordinates, which is then linearized using a constrained variational method. The associated constraints are imposed on the wavefunction rather than on the particle co-ordinates. The approach yields three self-consistent, time-reversal invariant, cranking-type Schrodinger equations for the rotation-vibration and intrinsic motions, and a self-consistency equation. For harmonic oscillator mean-field potentials, these equations are solved in closed forms for excitation energy, cut-off angular momentum, and other nuclear properties for the ground-state rotational band in some deformed nuclei. The results are compared with measured data.

  18. Effect of heat transfer on rotating electroosmotic flow through a micro-vessel: haemodynamical applications

    Sinha, A.; Mondal, A.; Shit, G. C.; Kundu, P. K.


    This paper theoretically analyzes the heat transfer characteristics associated with electroosmotic flow of blood through a micro-vessel having permeable walls. The analysis is based on the Debye-Hückel approximation for charge distributions and the Navier-Stokes equations are assumed to represent the flow field in a rotating system. The velocity slip condition at the vessel walls is taken into account. The essential features of the rotating electroosmotic flow of blood and associated heat transfer characteristics through a micro-vessel are clearly highlighted by the variation in the non-dimensional flow velocity, volumetric flow rate and non-dimensional temperature profiles. Moreover, the effect of Joule heating parameter and Prandtl number on the thermal transport characteristics are discussed thoroughly. The study reveals that the flow of blood is appreciably influenced by the elctroosmotic parameter as well as rotating Reynolds number.

  19. Clasping system with rotational path of insertion Part 3. Clinical application.

    Yamaga, T; Nokubi, T


    This study investigated the retentive forces of rotational path clasping systems. Twelve rotational path removable partial dentures were applied in the clinical field and the retentive forces of the dentures were measured. The following results were obtained; 1. Retentive forces of the 12 dentures were varied from 187g to 1,380g. 2. As distances between abutment teeth increased from 10.9 mm to 27.7 mm, the retentive forces decreased accordingly (r = -0.56; p dentures showed movement while eating. From these results, it became clear that the distance between abutment teeth and the inclination of the proximal surfaces greatly influenced the retention of the rotational path clasping system in the clinical field.

  20. Development and applications of single particle orientation and rotational tracking in dynamic systems

    Chen, Kuangcai [Iowa State Univ., Ames, IA (United States)


    The goal of this study is to help with future data analysis and experiment designs in rotational dynamics research using DIC-based SPORT technique. Most of the current studies using DIC-based SPORT techniques are technical demonstrations. Understanding the mechanisms behind the observed rotational behaviors of the imaging probes should be the focus of the future SPORT studies. More efforts are still needed in the development of new imaging probes, particle tracking methods, instrumentations, and advanced data analysis methods to further extend the potential of DIC-based SPORT technique.

  1. A number-projected model with generalized pairing interaction in application to rotating nuclei

    Satula, W. [Warsaw Univ. (Poland)]|[Joint Institute for Heavy Ion Research, Oak Ridge, TN (United States)]|[Univ. of Tennessee, Knoxville, TN (United States)]|[Royal Institute of Technology, Stockholm (Sweden); Wyss, R. [Royal Institute of Technology, Stockholm (Sweden)


    A cranked mean-field model that takes into account both T=1 and T=0 pairing interactions is presented. The like-particle pairing interaction is described by means of a standard seniority force. The neutron-proton channel includes simultaneously correlations among particles moving in time reversed orbits (T=1) and identical orbits (T=0). The coupling between different pairing channels and nuclear rotation is taken into account selfconsistently. Approximate number-projection is included by means of the Lipkin-Nogami method. The transitions between different pairing phases are discussed as a function of neutron/proton excess, T{sub z}, and rotational frequency, {Dirac_h}{omega}.

  2. Complex rotation with internal dissipation. Applications to cosmic-dust alignment and to wobbling comets and asteroids

    Efroimsky, M; Sidorenko, V; Efroimsky, Michael; Sidorenko, Vladislav


    Neutron stars, asteroids, comets, cosmic-dust granules, spacecraft, as well as whatever other freely spinning body dissipate energy when they rotate about any axis different from principal. We discuss the internal-dissipation-caused relaxation of a freely precessing rotator towards its minimal-energy mode (mode that corresponds to the spin about the maximal-inertia axis). While the body nutates at some rate, the internal stresses and strains within the body oscillate at frequencies both higher and lower than this rate. The internal dissipation takes place mostly the second and higher harmonics. We discuss the application of our findings to asteroids. Regarding the comets, estimates show that the currently available angular resolution of spacecraft-based instruments makes it possible to observe wobble damping within year- or maybe even month-long spans of time. We also discuss cosmic-dust astrophysics; in particular, the role played by precession damping in the dust alignment. We show that this damping provide...

  3. Drilling equipment

    Voyevodin, Yu.M.; Kholosha, Ye.G.; Leshchenko, A.G.; Timchenko, A.I.


    The invention refers to units designed for extracting minerals by mechanical action on the face by a cutting tool. There is a known drills which includes a pulse device which contains a combustion chamber, cylinder, piston-percussion tool and cutting tool. The combustion chamber and the sub-piston cavity of the cylinder are connected by a channel in which there is a distributor. Its shortcoming is the fact that the pulse device does not guarantee the necessary motion of the actuating mechanism for its velocity and frequency of the shocks on the cutting tool. This reduces the efficiency of the operation and limits the area of application. The purpose of the proposed invention is to improve productivity of the device. This is achieved because the head of the drill is equipped with a 2-piston pulse device which contains 2-combustion chambers, 2 working cylinders, 2 piston percussion instruments, a rod with gas-conducting and connecting channels for interconnection of the sub-piston cavities and combustion chambers of both cylinders. The spent gases of one cylinder are used for closing the combustion chamber of the second cylinder.

  4. Exploring nonnormality in magnetohydrodynamic rotating shear flows: application to astrophysical accretion disks

    Bhatia, Tanayveer Singh


    The emergence of turbulence in shear flows is a well-investigated field. Yet, one of major issues is the apparent contradiction between linear stability analysis quoting a flow to be stable and results from experiments and simulations proving it to be otherwise. There is some success, in particular in astrophysical systems, based on Magneto-Rotational Instability (MRI). However, MRI requires the system to be weakly magnetized, which is not a feature of general magnetohydrodynamic (MHD) flows. Nevertheless, linear perturbations of such flows are nonnormal in nature which argues for an origin of nonlinearity therein. The idea is, nonnormal perturbations could produce huge transient energy growth (TEG), which may lead to non-linearity and further turbulence. However, so far, nonnormal effects in shear flows have not been explored much in the presence of magnetic fields. Here, we consider the perturbed visco-resistive incompressible MHD shear flows with rotation in general. Basically we consider the magnetized ve...

  5. Advances in Molecular Rotational Spectroscopy for Applied Science

    Harris, Brent; Fields, Shelby S.; Pulliam, Robin; Muckle, Matt; Neill, Justin L.


    Advances in chemical sensitivity and robust, solid-state designs for microwave/millimeter-wave instrumentation compel the expansion of molecular rotational spectroscopy as research tool into applied science. It is familiar to consider molecular rotational spectroscopy for air analysis. Those techniques for molecular rotational spectroscopy are included in our presentation of a more broad application space for materials analysis using Fourier Transform Molecular Rotational Resonance (FT-MRR) spectrometers. There are potentially transformative advantages for direct gas analysis of complex mixtures, determination of unknown evolved gases with parts per trillion detection limits in solid materials, and unambiguous chiral determination. The introduction of FT-MRR as an alternative detection principle for analytical chemistry has created a ripe research space for the development of new analytical methods and sampling equipment to fully enable FT-MRR. We present the current state of purpose-built FT-MRR instrumentation and the latest application measurements that make use of new sampling methods.

  6. Comment on "The motion of an arbitrarily rotating spherical projectile and its application to ball games"

    Jensen, Jens Højgaard


    In a recent paper (Robinson G and Robinson I 2013 Phys. Scr. 88 018101) the authors developed the differential equations which govern the motion of a spherical projectile rotating about an arbitrary axis in the presence of an arbitrary wind, assuming that both the drag force and the lift force are independent of the Reynolds number and proportional to the square of the projectile's velocity. In this paper, by dimensional analysis, the latter assumption is shown to be incorrect for forces depe...

  7. 木工机械设备的管理与应用%The Management and Application of Woodworking Machinery and Equipment



    Normal and effective operation of mechanical equipment plays an important role in normal development of the woodworking industry . The rational management of the mechanical equipment can reduce the possibility of danger in using process , improve efficiency in the use of equipment , but also can reduce costs for enterprises . This paper introduces the significance of application development , woodworking machinery and equipment and management , analyzes the risk factors that may have in using the equipment , and discusses on how to improve the efficiency of equipment management .%机械设备安全有效的运行对木工行业的正常发展有着重要作用。对机械设备的合理管理可以有效的减小设备使用过程中发生危险的可能性,提高设备的使用效率,还可以为企业降低成本。本文介绍了木工机械设备的发展现状、应用前景及管理意义,分析了设备使用中可能产生的危险因素,对如何提高设备管理的效率做了探讨。

  8. Using a MEMS gyroscope to measure the Earth’s rotation for gyrocompassing applications

    Iozan, L. I.; Kirkko-Jaakkola, M.; Collin, J.; Takala, J.; Rusu, C.


    In this paper, a method and system for gyrocompassing based on a low-cost micro-electro-mechanical (MEMS) gyroscope are described. The proposed setup is based on the choice of a gyroscope with specified bias instability better than 2 deg h-1 and on careful error compensation. The gyroscope is aligned parallel to the local level, which helps to eliminate the g-sensitivity effect but also sacrifices a fraction of the Earth’s rotation rate that can be observed. The additive bias is compensated for by rotating the sensor mechanically and by extended Kalman filtering. In this paper, it is demonstrated that the proposed system is capable of observing the Earth’s rotation, and the north finding results show that a two-sigma accuracy of 4.03° was attained at latitude 61°N. With current MEMS gyroscopes, the system requires hours of time to achieve this accuracy, but the results demonstrate the theoretical accuracy potential of these small self-contained, low-cost sensors.

  9. New model of relativistic slowly rotating neutron stars with surface layer crust: application to giant glitches of Vela Pulsar

    Gonzalez-Romero, L M; Blazquez-Salcedo, J L, E-mail:, E-mail: [Depto. Fisica Teorica II, Facultad de Ciencias Fisicas, Universidad Complutense de Madrid, 28040-Madrid (Spain)


    Introducing a surface layer of matter on the edge of a neutron star in slow rigid rotation, we analyze, from an intrinsic point of view, the junction conditions that must be satisfied between the interior and exterior solutions of the Einstein equations. In our model the core-crust transition pressure arise as an essential parameter in the description of a configuration. As an application of this formalism, we describe giant glitches of the Vela pulsar as a result of variations in the transition pressure, finding that these small changes are compatible with the expected temperature variations of the inner crust during glitch time

  10. The fourteenth international symposium on mine planning and equipment selection (MPES) 2005 and the fifth international conference on computer applications in the minerals industry (CAMI) 2005

    Singhal, R.J.; Fytas, K.; Chiwetelu, C. (eds.)


    The proceedings contain 122 papers on mine planning, equipment selection, and computer applications in the mining and minerals industry. Presentations cover surface and underground mining, development, coal mining, oil sands mining, risk analysis, productivity, computer modelling, and waste treatment. Selected papers have been abstracted for the Coal Abstracts database.

  11. Passive RFID Rotation Dimension Reduction via Aggregation

    Matthews, Eric

    Radio Frequency IDentification (RFID) has applications in object identification, position, and orientation tracking. RFID technology can be applied in hospitals for patient and equipment tracking, stores and warehouses for product tracking, robots for self-localisation, tracking hazardous materials, or locating any other desired object. Efficient and accurate algorithms that perform localisation are required to extract meaningful data beyond simple identification. A Received Signal Strength Indicator (RSSI) is the strength of a received radio frequency signal used to localise passive and active RFID tags. Many factors affect RSSI such as reflections, tag rotation in 3D space, and obstacles blocking line-of-sight. LANDMARC is a statistical method for estimating tag location based on a target tag's similarity to surrounding reference tags. LANDMARC does not take into account the rotation of the target tag. By either aggregating multiple reference tag positions at various rotations, or by determining a rotation value for a newly read tag, we can perform an expected value calculation based on a comparison to the k-most similar training samples via an algorithm called K-Nearest Neighbours (KNN) more accurately. By choosing the average as the aggregation function, we improve the relative accuracy of single-rotation LANDMARC localisation by 10%, and any-rotation localisation by 20%.

  12. Electronic equipment packaging technology

    Ginsberg, Gerald L


    The last twenty years have seen major advances in the electronics industry. Perhaps the most significant aspect of these advances has been the significant role that electronic equipment plays in almost all product markets. Even though electronic equipment is used in a broad base of applications, many future applications have yet to be conceived. This versatility of electron­ ics has been brought about primarily by the significant advances that have been made in integrated circuit technology. The electronic product user is rarely aware of the integrated circuits within the equipment. However, the user is often very aware of the size, weight, mod­ ularity, maintainability, aesthetics, and human interface features of the product. In fact, these are aspects of the products that often are instrumental in deter­ mining its success or failure in the marketplace. Optimizing these and other product features is the primary role of Electronic Equipment Packaging Technology. As the electronics industry continues to pr...

  13. Application of QR-Codes in Medical Equipment Management%QR码在医疗器械管理中的应用

    郭晓伟; 段丹丹


    本文以QR码(快速响应矩阵码)技术为基础,介绍了二维码技术在医疗耗材、医用设备管理中的实际应用及信息查询,为医院医疗器械的现代化管理提出新的方案。%Application of the QR-Code (Quick-Response-Code) technology in management and information search of medical equipment and consumables was introduced in this paper, which offered a new solution for modernized management of medical equipment in the hospital.

  14. Application of Lean Management in archives Management of Medical Equipment%精益管理在医疗设备档案管理中的应用

    曾冬梅; 张正军


    Through introducing importance of medical equipment archives management and content of lean management, this paper expounds effective application of lean management in medical equipment archives management, finally summarizes the achievement of using lean management.%本文通过对医疗设备档案管理重要性及精益管理内容的介绍,阐述了如何将精益管理有效应用于医疗设备档案管理中,最后总结了运用精益管理所取得的成效.

  15. Energy-related laboratory equipment (ERLE) guidelines


    This document describes the Used Energy-Related Laboratory Equipment grants, and eligibility and procedures for participation. The document contains tables identifying typical equipment that may be requested, where to review ERLE equipment lists, and where to mail applications, a description of the eligible equipment grants access data system, and a copy of the ERLE grant application and instructions for its completion and submission.

  16. Compact rotating cup anemometer

    Wellman, J. B.


    Compact, collapsible rotating cup anemometer is used in remote locations where portability and durability are factors in the choice of equipment. This lightweight instrument has a low wind-velocity threshold, is capable of withstanding large mechanical shocks while in its stowed configuration, and has fast response to wind fluctuations.

  17. Euler-like modelling of dense granular flows: application to a rotating drum

    Bonamy, D.; Chavanis, P.-H.; Cortet, P.-P.; Daviaud, F.; Dubrulle, B.; Renouf, M.


    General conservation equations are derived for 2D dense granular flows from the Euler equation within the Boussinesq approximation. In steady flows, the 2D fields of granular temperature, vorticity and stream function are shown to be encoded in two scalar functions only. We checked such prediction on steady surface flows in a rotating drum simulated through the Non-Smooth Contact Dynamics method even though granular flows are dissipative and therefore not necessarily compatible with Euler equation. Finally, we briefly discuss some possible ways to predict theoretically these two functions using statistical mechanics.

  18. Construction of adaptive redundant multiwavelet packet and its application to compound faults detection of rotating machinery

    CHEN JingLong; ZI YanYang; HE ZhengJia; WANG XiaoDong


    It is significant to detect the fault type and assess the fault level as early as possible for avoiding catastrophic accidents.Due to diversity and complexity,the compound faults detection of rotating machinery under non-stationary operation turns to be a challenging task.Multiwavelet with two or more base functions may match two or more features of compound faults,which may supply a possible solution to compound faults detection.However,the fixed basis functions of multiwavelet transform,which are not related with the vibration signal,may reduce the accuracy of compound faults detection.Moreover,the decomposition results of multiwavelet transform not being own time-invariant is harmful to extract the features of periodical impulses.Furthermore,multiwavelet transform only focuses on the multi-resolution analysis in the low frequency band,and may leave out the useful features of compound faults.To overcome these shortcomings,a novel method called adaptive redundant multiwavelet packet (ARMP) is proposed based on the two-scale similarity transforms.Besides,the relative energy ratio at the characteristic frequency of the concerned component is computed to select the sensitive frequency bands of multiwavelet packet coefficients.The proposed method was used to analyze the compound faults of rolling element beating.The results showed that the proposed method could enhance the ability of compound faults detection of rotating machinery.

  19. Equipment concept design and development plans for microgravity science and applications research on space station: Combustion tunnel, laser diagnostic system, advanced modular furnace, integrated electronics laboratory

    Uhran, M. L.; Youngblood, W. W.; Georgekutty, T.; Fiske, M. R.; Wear, W. O.


    Taking advantage of the microgravity environment of space NASA has initiated the preliminary design of a permanently manned space station that will support technological advances in process science and stimulate the development of new and improved materials having applications across the commercial spectrum. Previous studies have been performed to define from the researcher's perspective, the requirements for laboratory equipment to accommodate microgravity experiments on the space station. Functional requirements for the identified experimental apparatus and support equipment were determined. From these hardware requirements, several items were selected for concept designs and subsequent formulation of development plans. This report documents the concept designs and development plans for two items of experiment apparatus - the Combustion Tunnel and the Advanced Modular Furnace, and two items of support equipment the Laser Diagnostic System and the Integrated Electronics Laboratory. For each concept design, key technology developments were identified that are required to enable or enhance the development of the respective hardware.

  20. Application of Lie algebraic method to the calculation of rotational spectra for linear triatomic molecules

    MENG; Qingtian


    [1]Iachello, F, Levine, R. D., Algebraic approach to molecular rotation-vibration spectra, I. Diatomic molecules, J, Chem.Phys.. 1982, 77: 3046.[2]Iachello. F.. Oss, S., Overtone frequencies and intensities of bent XY2 molecules in the vibron model, J. Mol. Spectrosc.,1990,142: 85.[3]Van Roosmalen, O. S., Iachello, F., Levine, R. D. et al., Algebraic approach to molecular rotation-vibration spectra, II. Triatomic molecules, J. Chem. Phys., 1983, 79: 2515.[4]Iachello, F., Levine, R. D., Algebraic approach to molecular rotation-vibration spectra, Int. J. Quantum Chem., 1983, 23:1679.[5]Cooper, I. L., Levine, R. D., Computed overtone spectra of linear triatomic molecules by dynamical symmetry, J. Mol. Spectrosc., 1991, 148: 391.[6]Iachello. F., Manini. N., Oss, S., Quasi-linear four-atomic molecules in the vibron model, J. Mol. Spectrosc., 1992, 156:190.[7]Wiesenfeld, L.. The vibron model for methane: stretch-bend interactions, J. Mol. Spectrosc., 1997, 184: 277.[8]Zheng, Y.. Ding, S., Vibrational spectra of HCN and OCS from second-order expansion of the U1(4) U2(4) algebra,Phys. Lett. A. 1999. 256: 197.[9]Zheng, Y.. Ding. S., Algebraic method for determining the potential energy surface for nonlinear triatomic molecules, Chem. Phys., 1999, 247: 225.[10]Zheng, Y.. Ding, S.. Algebraic description of stretching and bending vibrational spectra of H2O and H2S, J. Mol. Spectrosc.,2000. 201: 109.[11]Meng. Q., Zheng, Y., Ding, S., Lie algebraic approach to Fermi resonance levels of CS2 and CO2, Int. J. Quantum Chem.,2001, 81: 154.[12]Ding, S., Zheng, Y., Lie algebraic approach to potential energy surface for symmetric triatomic molecules, J. Chem. Phys.,1999. 111: 4466.[13]Zheng. Y., Ding, S., Algebraic approach to the potential energy surface for the electronic ground state of ozone, Chem.Phys.. 2000. 255: 217.[14]Zheng. Y., Ding, S., Theoretical study of nonlinear triatomic molecular potential energy surfaces: Lie

  1. Stress wave analysis: applied to rotating machines; Stress wave analysis: aplicado a maquinas rotativas

    Souza, Paulo Garcia de [Invensys Brasil Ltda., Sao Paulo, SP (Brazil)


    Stress wave analysis is the technology of data analysis (stress profile - ultrasound spectrum) collected by high-frequency acoustic sensors. Monitoring and analysis of rotating equipment, is a crucial element in predictive maintenance and condition based maintenance projects and, in a broader context, of performance management and optimization of assets. This article discusses the application of stress wave analysis to rotating machines in the context of assets optimization and CBM. (author)


    The report gives results of demonstrations of technologies to prevent or control emissions of hazardous air pollutant (HAPs) and volatile organic compounds (VOCs) from processes with high solvent usage: (1) paint stripping using methylene chloride, (2) cleaning paint equipment wi...

  3. Application of Novel Rotation Angular Model for 3D Mouse System Based on MEMS Accelerometers

    QIAN Li; CHEN Wen-yuan; XU Guo-ping


    A new scheme is proposed to model 3D angular motion of a revolving regular object with miniature, low-cost micro electro mechanical systems (MEMS) accelerometers (instead of gyroscope), which is employed in 3D mouse system. To sense 3D angular motion, the static property of MEMS accelerometer, sensitive to gravity acceleration, is exploited. With the three outputs of configured accelerometers, the proposed model is implemented to get the rotary motion of the rigid object. In order to validate the effectiveness of the proposed model, an input device is developed with the configuration of the scheme. Experimental results show that a simulated 3D cube can accurately track the rotation of the input device. The result indicates the feasibility and effectiveness of the proposed model in the 3D mouse system.

  4. Application of EDA methodology for assessment of the rotating machines insulation system condition

    Ilić Denis


    Full Text Available The insulation system of rotating machines of high importance has always been the object of thorough screening with certified test methods that are getting constantly improved. Low-power machines and 'less important' machines like high voltage motors, are rarely subjected to detailed electrical tests because of low resources allocated for their maintenance. The introduction of the EDA methodology in practice creates the conditions for reliable and complete diagnostics of stator windings of big machines, as well as the fast, easy and inexpensive screening for low-power machines (i.e. HV motors. The aim of the paper is to present the EDA methodology and its possibilities, including the solutions within the hardware and software.

  5. The application of compressive sampling to radio astronomy II: Faraday rotation measure synthesis

    Li, Feng; Cornwell, Tim J; de Hoog, Frank


    Faraday rotation measure (RM) synthesis is an important tool to study and analyze galactic and extra-galactic magnetic fields. Since there is a Fourier relation between the Faraday dispersion function and the polarized radio emission, full reconstruction of the dispersion function requires knowledge of the polarized radio emission at both positive and negative square wavelengths $\\lambda^2$. However, one can only make observations for $\\lambda^2 > 0$. Furthermore observations are possible only for a limited range of wavelengths. Thus reconstructing the Faraday dispersion function from these limited measurements is ill-conditioned. In this paper, we propose three new reconstruction algorithms for RM synthesis based upon compressive sensing/sampling (CS). These algorithms are designed to be appropriate for Faraday thin sources only, thick sources only, and mixed sources respectively. Both visual and numerical results show that the new RM synthesis methods provide superior reconstructions of both magnitude and p...

  6. FRIST—flipping and rotation invariant sparsifying transform learning and applications

    Wen, Bihan; Ravishankar, Saiprasad; Bresler, Yoram


    Features based on sparse representation, especially using the synthesis dictionary model, have been heavily exploited in signal processing and computer vision. However, synthesis dictionary learning typically involves NP-hard sparse coding and expensive learning steps. Recently, sparsifying transform learning received interest for its cheap computation and its optimal updates in the alternating algorithms. In this work, we develop a methodology for learning flipping and rotation invariant sparsifying transforms, dubbed FRIST, to better represent natural images that contain textures with various geometrical directions. The proposed alternating FRIST learning algorithm involves efficient optimal updates. We provide a convergence guarantee, and demonstrate the empirical convergence behavior of the proposed FRIST learning approach. Preliminary experiments show the promising performance of FRIST learning for sparse image representation, segmentation, denoising, robust inpainting, and compressed sensing-based magnetic resonance image reconstruction.

  7. SYQ-3型节能清蜡机研制与应用%Development and application of model SYQ-3 energy-saving paraffin cleaning equipment

    李良青; 沈建华; 宋改春


    Model SYQ-3 paraffin cleaning equipment is a new kind of energy-saving wax removing and well flushing equipment which is designed for waxed oil well.Structure and working principle are introduced.Through field testing and application it is proved that this equipment has suitable structure and good performance.It is a ideal equipment for paraffin cleaning,and has high value for extending application.%SYQ-3型节能清蜡机是针对油井结蜡而专门研制的新型节能清蜡洗井设备,简要介绍该设备设计结构,工作原理,通过现场试验及应用,证明该设备结构合理,性能良好,是油井清蜡的一种较理想的设备,具有推广价值。

  8. Hardwood vigor and survival following applications of imazapyr in mid-rotation pine plantations

    Prabudhda Dahal Dahal; Hal O. Liechty; Bryan Rupar; Conner Fristoe; Eric Heitzman


    Tree vigor, live crown ratios, dieback, and survival of hardwood competition were monitored for 2 years following a fall application (16 ounces per acre) of imazapyr on 4 stands of loblolly pine (Pinus taeda L.) in the Gulf Coastal Plain of Louisiana and Arkansas. Assessments during the first growing season following application indicated that 87 to...

  9. Exploring non-normality in magnetohydrodynamic rotating shear flows: Application to astrophysical accretion disks

    Singh Bhatia, Tanayveer; Mukhopadhyay, Banibrata


    The emergence of turbulence in shear flows is a well-investigated field. Yet, there are some lingering issues that have not been sufficiently resolved. One of them is the apparent contradiction between the results of linear stability analysis showing a flow to be stable and yet experiments and simulations proving it to be otherwise. There is some success, in particular in astrophysical systems, based on magnetorotational instability (MRI), revealing turbulence. However, MRI requires the system to be weakly magnetized. Such instability is neither a feature of general magnetohydrodynamic (MHD) flows nor revealed in purely hydrodynamic flows. Nevertheless, linear perturbations of such flows are non-normal in nature, which argues for a possible origin of nonlinearity therein. The concept behind this is that non-normal perturbations could produce huge transient energy growth (TEG), which may lead to nonlinearity and further turbulence. However, so far, non-normal effects in shear flows have not been explored much in the presence of magnetic fields. In this spirit, here we consider the perturbed viscoresistive MHD shear flows with rotation in general. Basically we recast the magnetized momentum balance and associated equations into the magnetized version of Orr-Sommerfeld and Squire equations and their magnetic analogs. We also assume the flow to be incompressible and in the presence of Coriolis effect solve the equations using a pseudospectral eigenvalue approach. We investigate the possible emergence of instability and large TEG in three different types of flows, namely, the Keplerian flow, the Taylor-Couette (or constant angular momentum) flow, and plane Couette flow. We show that, above a certain value of magnetic field, instability and TEG both stop occurring. We also show that TEG is maximum in the vicinity of regions of instability in the wave number space for a given magnetic field and Reynolds number, leading to nonlinearity and plausible turbulence. Rotating

  10. Complex Rotation Quantum Dynamic Neural Networks (CRQDNN) using Complex Quantum Neuron (CQN): Applications to time series prediction.

    Cui, Yiqian; Shi, Junyou; Wang, Zili


    Quantum Neural Networks (QNN) models have attracted great attention since it innovates a new neural computing manner based on quantum entanglement. However, the existing QNN models are mainly based on the real quantum operations, and the potential of quantum entanglement is not fully exploited. In this paper, we proposes a novel quantum neuron model called Complex Quantum Neuron (CQN) that realizes a deep quantum entanglement. Also, a novel hybrid networks model Complex Rotation Quantum Dynamic Neural Networks (CRQDNN) is proposed based on Complex Quantum Neuron (CQN). CRQDNN is a three layer model with both CQN and classical neurons. An infinite impulse response (IIR) filter is embedded in the Networks model to enable the memory function to process time series inputs. The Levenberg-Marquardt (LM) algorithm is used for fast parameter learning. The networks model is developed to conduct time series predictions. Two application studies are done in this paper, including the chaotic time series prediction and electronic remaining useful life (RUL) prediction.

  11. 医疗设备档案管理中创新思维的运用%Exploration of creative thinking application in medical equipment archive administration



    Objective: To explore the active role of creative thinking application in medical equipment archive administration. Methods: The application of creative thinking and ability was scientifically explored through literature review and practice summary. Results: The application of creative thinking in medical equipment archives administration makes an attempt in effective medical archives usage. Conclusion: The exploration of creative thinking and ability may change the delay status quo of medical equipment archive administration.%目的:探讨创新思维在医疗设备档案管理中的积极作用.方法:通过查阅文献和实践经验总结,对创新思维和创新能力的实施进行科学探讨.结果:将创新内容应用于医疗设备档案管理中,为高效率利用医疗设备档案资源进行有益尝试.结论:通过对创新思维、创新能力的探讨,有望改变医疗设备档案管理滞后的现状和局面.

  12. Impact of 3D Rotational Angiography on Liver Embolization Procedures: Review of Technique and Applications

    Lucatelli, Pierleone, E-mail:; Corona, Mario, E-mail:; Argirò, Renato, E-mail:; Anzidei, Michele, E-mail: [Sapienza University of Rome, Vascular and Interventional Radiology Unit, Department of Radiological, Oncological and Anatomo-Pathological Sciences (Italy); Vallati, Giulio, E-mail: [Istituto Nazionale Tumori, Regina Elena, Department of Angiography and Interventional Radiology (Italy); Fanelli, Fabrizio, E-mail:; Bezzi, Mario, E-mail:; Catalano, Carlo, E-mail: [Sapienza University of Rome, Vascular and Interventional Radiology Unit, Department of Radiological, Oncological and Anatomo-Pathological Sciences (Italy)


    In the last years, the interest into interventional applications of C-arm cone-beam CT (CBCT) progressively raised, widening its clinical application from the original field of interventional neuroradiology to the field of peripheral procedures. Liver embolization procedures, due to their complexity and potential treatment-related life-threatening complications, represent one of the main clinical applications of this novel angiographic technique. CBCT has been demonstrated to render procedures safer and technically easier, and to predict outcome as well as to avoid major complications in different treatment scenarios (trans-arterial embolization, trans-arterial chemoembolization, selective internal radiation therapy, percutaneous portal vein embolization). This review summarizes all technical, dosimetric and procedural aspects of CBCT techniques, underlying all its potential clinical advantages in the field of liver embolization procedures. Moreover, the paper provides all the instructions to obtain the best diagnostic performance out of this novel angiographic technique.

  13. Morphology of the humeral insertion of the supraspinatus and infraspinatus tendons: Application to rotator cuff repair.

    Lumsdaine, William; Smith, Adam; Walker, Rowan G; Benz, Daniel; Mohammed, Khalid D; Stewart, Fiona


    In shoulder surgery, a precise understanding of anatomical relationships is required for accurate reconstruction. Reports in recent literature have challenged the traditional definitions of the humeral footprints of the supraspinatus and infraspinatus tendons. This study aims to precisely delineate these footprints. The rotator cuffs of 54 shoulders from 27 Australian Caucasoid donor cadavers were examined. The tendinous portions were dissected down to their region/footprint of attachment upon the humerus. Measurements of those footprints, upon the greater and lesser tuberosities, were made. Those measurements were statistically analyzed for any association with age, sex, height, or side. Twenty-seven cadavers had an average age at death of 74.9 (± 12.8), 56% were male, average height was 168 (± 8.6) cm. Due to premorbid fracture, or degeneration, 11 shoulders were excluded. The footprint of the supraspinatus was triangular, with a medial, anteroposterior length of 20.4 ± 4.2 mm. Its lateral anteroposterior length was 6.3 ± 1.6 mm and its maximal mediolateral width was 6.6 ± 2.7 mm. Its calculated area was 122.0 ± 66.6 mm(2). The footprint of the infraspinatus was trapezoidal, with a medial anteroposterior length 22.6 ± 3.0 mm. Its lateral anteroposterior length was 25.4 ± 3.3mm and its maximal mediolateral width was 12.0 ± 2.7 mm. Its calculated area was 294.9 ± 74.1 mm(2). There was no statistical correlation between size of the footprint and age, sex, side, or height. The humeral footprints of the supraspinatus and infraspinatus tendons upon the greater tuberosity were distinct. The lateral border of the infraspinatus' humeral attachment extended much farther anteriorly upon the highest facet of the greater tuberosity than in traditional descriptions. © 2015 Wiley Periodicals, Inc.

  14. COST Action TU1208 - Working Group 1 - Design and realisation of Ground Penetrating Radar equipment for civil engineering applications

    Pajewski, Lara; Benedetto, Andrea; D'Amico, Sebastiano; Ferrara, Vincenzo; Frezza, Fabrizio; Persico, Raffaele; Tosti, Fabio


    This work aims at presenting the main results achieved by Working Group (WG) 1 "Novel Ground Penetrating Radar instrumentation" of the COST (European COoperation in Science and Technology) Action TU1208 "Civil Engineering Applications of Ground Penetrating Radar" (, The principal goal of the Action, which started in April 2013 and is ending in October 2017, is to exchange and increase scientific-technical knowledge and experience of Ground Penetrating Radar techniques in civil engineering, whilst promoting throughout Europe the effective use of this safe non-destructive technique. The Action involves more than 300 Members from 28 COST Countries, a Cooperating State, 6 Near Neighbour Countries and 6 International Partner Countries. The most interesting achievements of WG1 include: 1. The state of the art on GPR systems and antennas was composed; merits and limits of current GPR systems in civil engineering applications were highlighted and open issues were identified. 2. The Action investigated the new challenge of inferring mechanical (strength and deformation) properties of flexible pavement from electromagnetic data. A semi-empirical method was developed by an Italian research team and tested over an Italian test site: a good agreement was found between the values measured by using a light falling weight deflectometer (LFWD) and the values estimated by using the proposed semi-empirical method, thereby showing great promises for large-scale mechanical inspections of pavements using GPR. Subsequently, the method was tested on a real scale, on an Italian road in the countryside: again, a good agreement between LFWD and GPR data was achieved. As a third step, the method was tested at larger scale, over three different road sections within the districts of Madrid and Guadalajara, in Spain: GPR surveys were carried out at the speed of traffic for a total of 39 kilometers, approximately; results were collected by using different GPR antennas

  15. Reducing pesticide drift by considering propeller rotation effects from aerial application and near buffer zones

    Off-target drift of chemical from agricultural spraying can damage sensitive crops, destroy beneficial insects, and intrude on human and domestic animal habitats, threatening environmental quality. Reduction of drift from aerial application can be facilitated at the edge of a field by offsetting spr...

  16. Global Dynamics of Shaft Lines Rotating in Surrounding Fluids Application to Thin Fluid Films

    David Lornage


    a disc and a thin-walled shaft mounted on a hydrodynamic bearing. The second is intended for studying a more realistic structure composed of a shaft and a wheel coupled with a fluid film between the wheel and a casing. These applications make it possible to identify trends related to fluid effects and couplings between the flexible structural parts.

  17. An improved dynamic subgrid-scale model and its application to large eddy simulation of rotating channel flows

    LIU; Nansheng; LU; Xiyun; ZHUANG; Lixian


    A new dynamic subgrid-scale (SGS) model, which is proved to satisfy the principle of asymptotic material frame indifference (AMFI) for rotating turbulence, is proposed based on physical and mathematical analysis. Comparison with direct numerical simulation (DNS) results verifies that the new SGS model is effective for large eddy simulation (LES) on rotating turbulent flow. The SGS model is then applied to the LES of the spanwise rotating turbulent channel flow to investigate the rotation effect on turbulence characteristics, budget terms in the transport equations of resolved Reynolds stresses, and flow structures near the wall regions of the rotating channel.

  18. Development and application of theoretical models for Rotating Detonation Engine flowfields

    Fievisohn, Robert

    As turbine and rocket engine technology matures, performance increases between successive generations of engine development are becoming smaller. One means of accomplishing significant gains in thermodynamic performance and power density is to use detonation-based heat release instead of deflagration. This work is focused on developing and applying theoretical models to aid in the design and understanding of Rotating Detonation Engines (RDEs). In an RDE, a detonation wave travels circumferentially along the bottom of an annular chamber where continuous injection of fresh reactants sustains the detonation wave. RDEs are currently being designed, tested, and studied as a viable option for developing a new generation of turbine and rocket engines that make use of detonation heat release. One of the main challenges in the development of RDEs is to understand the complex flowfield inside the annular chamber. While simplified models are desirable for obtaining timely performance estimates for design analysis, one-dimensional models may not be adequate as they do not provide flow structure information. In this work, a two-dimensional physics-based model is developed, which is capable of modeling the curved oblique shock wave, exit swirl, counter-flow, detonation inclination, and varying pressure along the inflow boundary. This is accomplished by using a combination of shock-expansion theory, Chapman-Jouguet detonation theory, the Method of Characteristics (MOC), and other compressible flow equations to create a shock-fitted numerical algorithm and generate an RDE flowfield. This novel approach provides a numerically efficient model that can provide performance estimates as well as details of the large-scale flow structures in seconds on a personal computer. Results from this model are validated against high-fidelity numerical simulations that may require a high-performance computing framework to provide similar performance estimates. This work provides a designer a new

  19. The motion of an arbitrarily rotating spherical projectile and its application to ball games

    Robinson, Garry; Robinson, Ian


    In this paper the differential equations which govern the motion of a spherical projectile rotating about an arbitrary axis in the presence of an arbitrary ‘wind’ are developed. Three forces are assumed to act on the projectile: (i) gravity, (ii) a drag force proportional to the square of the projectile's velocity and in the opposite direction to this velocity and (iii) a lift or ‘Magnus’ force also assumed to be proportional to the square of the projectile's velocity and in a direction perpendicular to both this velocity and the angular velocity vector of the projectile. The problem has been coded in Matlab and some illustrative model trajectories are presented for ‘ball-games’, specifically golf and cricket, although the equations could equally well be applied to other ball-games such as tennis, soccer or baseball. Spin about an arbitrary axis allows for the treatment of situations where, for example, the spin has a component about the direction of travel. In the case of a cricket ball the subtle behaviour of so-called ‘drift’, particularly ‘late drift’, and also ‘dip’, which may be produced by a slow bowler's off or leg-spin, are investigated. It is found that the trajectories obtained are broadly in accord with those observed in practice. We envisage that this paper may be useful in two ways: (i) for its inherent scientific value as, to the best of our knowledge, the fundamental equations derived here have not appeared in the literature and (ii) in cultivating student interest in the numerical solution of differential equations, since so many of them actively participate in ball-games, and they will be able to compare their own practical experience with the overall trends indicated by the numerical results. As the paper presents equations which can be further extended, it may be of interest to research workers. However, since only the most basic principles of fundamental mechanics are employed, it should be well within the grasp of first

  20. Thermal design and flight validation for laser communicator equipment

    Meng, Henghui; Geng, Liyin; Tan, Canghai; Li, Guoqiang


    Laser communicator equipment, designed for advanced optical communication, with a large capacity communication, good encryption and lightweight structures, etc., has a wide range of applications. As for the special transmission characteristic of optical communication, laser phase in the transmission path should be accurate, and less thermal deformation for the optical parts is required in the working process, so the laser communicator equipment has a high level requirement for temperature. Large power units cooling, outer two-dimensional rotating units, temperature control for rotating cable, and high temperature stability and equality, bring a challenge for thermal design. Using structure -electric-thermo-optical integration technology, active and passive thermal control methods are adopt in thermal design for laser communicator equipment: heat-conducted plate and heat pipe were adopted for heat transfer of high heat-flux parts, a new passive and active thermal control method to solve cable cryogenic problems, and high precision temperature control methods were applied for key parts. In-orbit data were analyzed, and the results prove the thermal design correct, and bring a way to thermal control for the equipment with high heat flux and running parts.

  1. Electromagnetic rotational actuation.

    Hogan, Alexander Lee


    There are many applications that need a meso-scale rotational actuator. These applications have been left by the wayside because of the lack of actuation at this scale. Sandia National Laboratories has many unique fabrication technologies that could be used to create an electromagnetic actuator at this scale. There are also many designs to be explored. In this internship exploration of the designs and fabrications technologies to find an inexpensive design that can be used for prototyping the electromagnetic rotational actuator.

  2. Application of SLE Service in TT&C Equipment%SLE服务在测控设备中的应用研究

    朱宏涛; 黄薇; 庄德安; 冯炜; 贾林巧


    针对CCSDS(空间数据系统咨询委员会)建议的SLE(空间链路扩展)服务并不完全适应现有测控设备运行管理体系和数据交互体系的问题,在介绍SLE服务体系和我国航天测控设备运行管理体系的基础上,对测控设备接口关系、SLE业务对现有测控设备的要求以及SLE服务在测控通信领域的发展等方面进行了重点研究,提出了应用SLE服务的测控设备接口方案和相关设备设计要求,并建议逐步在深空站等具备条件的地面站配置和使用自主开发的SLE服务.%This paper studies issues of incompatibility between SLE (Space Link Extension) services of CCSDS (Consultative Committee for Space Data Systems) and the current operation and management system and data exchange system of China's TT&-C equipment. Discussions are given to inter梖acility links of TTc>-C equipment, requirements of SLE services on TT&-C equipment and future development of SLE services in the field of TT&.C and communication. A schematic of interfaces of TT&C equipment and equipment design requirements are proposed for application of SLE services. It is suggested that self-developed SLE service should be first used in deep space stations, which are under construction at the moment.

  3. Vibration attenuation of rotating machines by application of magnetorheological dampers to minimize energy losses in the rotor support

    Zapoměl, J.; Ferfecki, P.


    A frequently used technological solution for minimization of undesirable effects caused by vibration of rotating machines consists in placing damping devices in the rotor supports. The application of magnetorheological squeeze film dampers enables their optimum performance to be achieved in a wide range of rotating speeds by adapting their damping effect to the current operating conditions. The damping force, which is produced by squeezing the layer of magnetorheological oil, can be controlled by changing magnetic flux passing through the lubricant. The force acting between the rotor and its frame is transmitted through the rolling element bearing, the lubricating layer and the squirrel spring. The loading of the bearing produces a time variable friction moment, energy losses, uneven rotor running, and has an influence on the rotor service life and the current fluctuation in electric circuits. The carried out research consisted in the development of a mathematical model of a magnetorheological squeeze film damper, its implementation into the computational models of rotor systems, and in performing the study on the dependence of the energy losses and variation of the friction moment on the damping force and its control. The new and computationally stable mathematical model of a magnetorheological squeeze film damper, its implementation in the computational models of rigid rotors and learning more on the energy losses generated in the rotor supports in dependence on the damping effect are the principal contributions of this paper. The results of the computational simulations prove that a suitable control of the damping force enables the energy losses to be reduced in a wide velocity range.

  4. 速度编码器在港口设备中的应用%The Application of the Speed Coder in Port's Equipments



    As the important part of speed-adjustment system of port's equipment, the application of speed coder cause more and more attention of equipment and technical department of each port. This paper introduces the working pr/nciple of the speed coder. It analyzes in detail the accident nnd ~t~te~ th~ rn~nt~ 4 ~ .~ ^_-I__%速度编码器作为港口设备调速系统的重要组成部分,它的应用已逐渐被各港口设备技术部门所关注。介绍了速度编码器的工作原理,并进行了详细的故障解析。阐述了速度编码器的维护经验。

  5. 激光治疗设备的发展现状与应用前景%Current development and application of laser therapy equipment



    简要回顾了激光治疗技术的发展历史;介绍了在临床应用上具有代表性的激光治疗设备的现状和最新研究进展;给出了笔者对激光医疗设备发展趋势和应用前景的看法.%The principal and technique of laser therapy are discoursed upon in chief, current development and application of laser therapy equipment are described by introducing some lasers applied in surgery and medicine such as ophthalmology and photodynamic therapy. Finally, individual view to evolution trend of laser therapy equipment is presented.

  6. 金属矿磨矿设备研究与应用新进展%The Research in the Research & Application of Metal Mine Grinding Equipment



    阐述了近年来国内外金属矿山磨矿设备的研究和应用进展,涉及自磨(半自磨)机、球磨机和搅拌磨机等,主要综述了磨矿设备在大型化方面的研究与发展,介绍了国内外典型的应用情况。%This article elaborates the progress in the application and research of metal mine grinding equipment at home and abroad in recent years. The involved equipments are (semi) autogeneous mill, ball mill, agitating mill, vertical mill and Isa mill. We mainly talk about the achievement of grinding attachment in large-scale and introduce the typical examples at home and abroad.

  7. Effect of rotation on a rotating hot-wire sensor

    Hah, C.; Lakshminarayana, B.


    An investigation was conducted to discern the effects of centrifugal and Coriolis forces on a rotating hot-wire. The probe was calibrated in a wind tunnel as well as in a rotating mode. The effect of rotation was found to be negligibly small. A small change in cold resistance (1.5%) was observed in the rotating wire. The rotation seems to have a negligible effect on the fluid mechanics, heat transfer and material characteristics of the wire. This is a significant conclusion in view of the potential application of the hot-wire probe in a rotating passage (such as turbomachinery).

  8. Calculation of patient effective dose and scattered dose for dental mobile fluoroscopic equipment: application of the Monte Carlo simulation.

    Lee, Boram; Lee, Jungseok; Kang, Sangwon; Cho, Hyelim; Shin, Gwisoon; Lee, Jeong-Woo; Choi, Jonghak


    The objective of this study was to evaluate the patient effective dose and scattered dose from recently developed dental mobile equipment in Korea. The MCNPX 2.6 (Los Alamos National Laboratory, USA) was used in a Monte Carlo simulation to calculate both the effective and scattered doses. The MCNPX code was constructed identically as in the general use of equipment and the effective dose and scattered dose were calculated using the KTMAN-2 digital phantom. The effective dose was calculated as 906 μSv. The equivalent doses per organ were calculated via the MCNPX code, and were 32 174 and 19 μSv in the salivary gland and oesophagus, respectively. The scattered dose of 22.5-32.6 μSv of the tube side at 25 cm from the centre in anterior and posterior planes was measured as 1.4-3 times higher than the detector side of 10.5-16.0 μSv.

  9. Changes in non-pine woody species density, composition, and diversity following herbicide and fertilization application to mid-rotation loblolly pine stands

    Hal O. Liechty; Conner Fristoe


    We monitored woody vegetation (dbh>1.0 in) response for up to six years following a herbicide (16 ounces imazapyr /acre), a fertilizer (365 pounds urea and 175 pounds diammonium phosphate/acre ) and a combined fertilizer and herbicide application in four mid-rotation loblolly pine stands located within the Upper Gulf Coastal Plain in Arkansas. Approximately 60-80%...

  10. 阻旋式料位计在电石料仓上的应用%Application of damped rotation material level meter in calcium carbide bunker



    Thc requirements of type of matcrial level meter for calcium carbide bunker were intro- duced as well as the application of damped rotation material level meter in calcium carbide bunker.%介绍了电石料仓料位计的选型要求及阻旋式料位计在电石料仓的应用情况。

  11. A Compact Two-Level Sequentially Rotated Circularly Polarized Antenna Array for C-Band Applications

    Stefano Maddio


    Full Text Available A compact circular polarized antenna array with a convenient gain/bandwidth/dimension trade-off is proposed for applications in the C-band. The design is based on the recursive application of the sequential phase architecture, resulting in a 4 × 4 array of closely packed identical antennas. The 16 antenna elements are disc-based patches operating in modal degeneration, tuned to exhibit a broad while imperfect polarization. Exploiting the compact dimension of the patches and a space-filling design for the feeding network, the entire array is designed to minimize the occupied area. A prototype of the proposed array is fabricated with standard photoetching procedure in a single-layer via less printed board of overall area 80 × 80 mm2. Adequate left-hand polarization is observed over a wide bandwidth, demonstrating a convenient trade-off between bandwidth and axial ratio. Satisfying experimental results validate the proposed design, with a peak gain of 12.6 dB at 6.7 GHz maintained within 3 dB for 1 GHz, a very wide 10 dB return loss bandwidth of 3 GHz, and a 4 dB axial ratio bandwidth of 1.82 GHz, meaning 31% of fractional bandwidth.

  12. Web application for the control and management of radioprotection equipment in the Cadarache centre; Application WEB pour le controle et la gestion des appareils de radioprotection sur le centre de Cadarache



    The author describes a web 2-type application which has been developed for the periodic calibration controls of radioprotection equipment in Cadarache. This application aims at offering an easy and immediate and even remote access to information, at selecting information with respect to uses (radioprotection department, administrator, and so on), at securing and safeguarding homogeneous data, at editing control statistics. The different functionalities are briefly presented with their displayed interface

  13. Data center equipment location and monitoring system


    , and runs a software application program that communicates with the equipment rack controllers. The software application program of the central control computer stores IDs of the equipment rack controllers and each of its connected electronic ID tags in a database.; The software application program......A data center equipment location system includes both hardware and software to provide for location, monitoring, security and identification of servers and other equipment in equipment racks. The system provides a wired alternative to the wireless RFID tag system by using electronic ID tags...... connected to each piece of equipment, each electronic ID tag connected directly by wires to a equipment rack controller on the equipment rack. The equipment rack controllers then link over a local area network to a central control computer. The central control computer provides an operator interface...

  14. Increasing the Usage of Personal Protective Equipments in Constructing Subway Stations: An Application of Social Marketing Model

    M Shams


    Full Text Available Abstract Background & aim: Although the relationship between the use of personal protective equipment and the reduction of workplace injuries is well-known the use of these devices during operation by the staff is not so desirable. This study was based on a model of social marketing interventions to increase the use of safety devices and personal protection on the subway-station staff. Methods: The present quasi-experimental study was based on the results of a formative research consisted of a qualitative (exploring employees’ views through focus group discussions and a quantitative study (measuring attitudes and behaviors by questionnaire and checklist. Based on the formative research findings, a free package includes a helmet with a label containing the message, an anti-cut safety gloves, a dust mask, and an educational pamphlet were delivered to intervention group. After four weeks, the check list of observational behaviors in two constructing stations was completed and the results were compared with before intervention. The data were analyzed by paired t-test, t-test and logistic regression. Results: Three common behaviors were observed among staff not using caps, masks and gloves. The odds ratio for helmet and mask usage in the intervention group was more than other groups. After the intervention, the use of safety helmets and masks significantly increased (p < 0.05. The odds ratio for the use of helmets and masks after intervention in the intervention group was significantly higher than other groups (p < 0.05. Conclusion: The experimental basis of the safety devices and personal protection needs and demands of the audience, material and immaterial costs of the equipment, supplies, and promoting their use in the right place, can encourage the staff to continuously use the safety devices at workplace. Key Words: Workplace, Injuries, Personal Protective Equipment, Social Marketing

  15. Application of free rotational models of molecular reorientation to the explanation of high frequency effects in dielectric relaxation

    Coffey, W. T.; Déjardin, P. M.; Walsh, M. E.


    Exact solutions obtained by Gross [J. Chem. Phys. 23, 1415 (1955)] and Sack [Proc. Phys. Soc. London, Sect. B 70, 402 (1957)] for the complex polarizability of assemblies of nonelectrically interacting rotators subjected to a variety of collisions and various approximations to that quantity, specifically the Rocard equation are reappraised in view of recent attempts to use a variety of forms of that equation for the interpretation of far infrared resonance absorption spectra. It is shown that for small values of the inertial parameter (heavy damping) the Rocard equation yields a really good approximation for the complex polarizability only for the small collision model considered by Gross and Sack. In the case of large inertial parameter values it is emphasized by means of plots of the complex polarizability that such an approximation always exhibits behavior characteristic of a sharply resonant system, i.e., a pronounced absorption peak well in excess of the Debye peak and a strongly negative real part, while the exact complex polarizability spectrum for the same parameter values merely displays inertia corrected Debye relaxation. Therefore, an explanation of the resonant term other than that based on a Rocard equation with a large inertial parameter must be sought as that equation strictly applies to inertia corrected Debye (heavily damped) relaxation only. The application of the itinerant oscillator model and the three variable Mori theory to the problem is discussed in view of this conclusion.

  16. A note on the application of the Prigogine theorem to rotation of tokamak-plasmas in absence of external torques

    Sonnino, Giorgio, E-mail: [Department of Physics, Université Libre de Bruxelles (U.L.B.), Campus de la Plaine C.P. 231-Bvd du Triomphe, 1050 Brussels (Belgium); Royal Military Academy (RMA), Laboratory for Plasma Physics, Avenue de la Renaissance, 30, 1000 Brussels (Belgium); Cardinali, Alessandro; Zonca, Fulvio [EURATOM-ENEA Fusion Association, Via E.Fermi 45, C.P. 65-00044 Frascati, Rome (Italy); Sonnino, Alberto [Université Catholique de Louvain (UCL), Ecole Polytechnique de Louvain (EPL), Rue Archimède, 1 bte L6.11.01, 1348 Louvain-la-Neuve (Belgium); Nardone, Pasquale [Department of Physics, Université Libre de Bruxelles (U.L.B.), Campus de la Plaine C.P. 231-Bvd du Triomphe, 1050 Brussels (Belgium); Steinbrecher, György [EURATOM-MEdC Fusion Association, University of Craiova, Faculty of Exact Sciences, Str.A.I.Cuza Street 13, 200585 Craiova (Romania)


    Rotation of tokamak-plasmas, not at the mechanical equilibrium, is investigated using the Prigogine thermodynamic theorem. This theorem establishes that, for systems confined in rectangular boxes, the global motion of the system with barycentric velocity does not contribute to dissipation. This result, suitably applied to toroidally confined plasmas, suggests that the global barycentric rotations of the plasma, in the toroidal and poloidal directions, are pure reversible processes. In case of negligible viscosity and by supposing the validity of the balance equation for the internal forces, we show that the plasma, even not in the mechanical equilibrium, may freely rotate in the toroidal direction with an angular frequency, which may be higher than the neoclassical estimation. In addition, its toroidal rotation may cause the plasma to rotate globally in the poloidal direction at a speed faster than the expression found by the neoclassical theory. The eventual configuration is attained when the toroidal and poloidal angular frequencies reaches the values that minimize dissipation. The physical interpretation able to explain the reason why some layers of plasma may freely rotate in one direction while, at the same time, others may freely rotate in the opposite direction, is also provided. Invariance properties, herein studied, suggest that the dynamic phase equation might be of the second order in time. We then conclude that a deep and exhaustive study of the invariance properties of the dynamical and thermodynamic equations is the most correct and appropriate way for understanding the triggering mechanism leading to intrinsic plasma-rotation in toroidal magnetic configurations.

  17. Generating a Crop Rotation Dataset for the U.S and its Application in Inferring Land Use Change Induced Wetland Losses in the Prairie Pothole Region

    Sahajpal, R.; Zhang, X.; Izaurralde, R. C.; Hurtt, G. C.


    Agricultural management practices plays a major role in the global fluxes of greenhouse gases, soil carbon sequestration and production of ecosystem services. A key component of these practices are the crop rotations selected by the farmer. Here, we present an algorithm to create a crop rotation dataset for the U.S and demonstrate the tradeoffs between the number and accuracy of rotations comprising a state. To generate the rotations, we use the USDA Cropland Data Layer (CDL) available for the entire U.S at a resolution of 30 m from 2010 to 2012. Several studies have generated rotations simply by merging several years of CDL data, resulting in thousands of rotations per state. Alternatively, they tend to aggregate the rotations into a few predefined categories. This over simplification can lead to erroneous acreage values impacting both biogeochemical model estimates and land use change studies. Our algorithm uses the edit distance metric to combine similar rotations to obtain a product which retains the accuracy of CDL while minimizing the number of rotations. We find that 180 unique rotations are needed to represent the entire U.S with an accuracy exceeding 80% when compared to the underlying CDL datasets for rotations from 2010 to 2012. For the agriculturally important and diverse Western corn belt, the number of rotations needed to represent each state with an accuracy exceeding 90% when compared to the CDL dataset, ranges from 3 unique rotations for Iowa to more than 50 for North Dakota. As an application of the dataset, we examine the findings of Wright and Wimberly (1), who reported in a recent issue of PNAS that recent grassland conversion to corn and soybean cropping (GRCS) from 2006 to 2011 in the Prairie Pothole Region (PPR) is concentrated in the vicinity of wetlands. Their analysis implicitly assumes that all wetlands affected by GRCS in the PPR existed in or after 2006. However, the areal extent of wetlands was based on National Wetland Inventory maps

  18. Development of an enzyme fluidized bed reactor equipped with static mixers: application to lactose hydrolysis in whey

    Fauquex, P.F.; Flaschel, E.; Renken, A.


    Reactor operation with immobilized enzymes in fixed bed arrangement is often impaired due to the presence of finely divided solid matter, adsorbing substances or gas. The fluidized bed reactor would be applied in such cases owing to a limited pressure drop, a controlled voidage, and the avoidance of perforated plates for catalyst retention. Since enzymic reactions are often slow processes, catalysts of high external surface area should be provided together with sufficient time. However, classical fluidized beds suffer from hydrodynamic instability under these conditions. Therefore, a new reactor design was developed which used motionless mixers as internals. Fluidized bed reactors equipped with internals exhibit an outstanding hydrodynamic stability accompanied by an increase of the operating range in terms of flow rate by a factor of 4 compared to the classical fluidized bed. Results are presented, with emphasis on the backmixing and expansion characteristics. Various motionless mixers were investigated in columns of 39 and 150 mm in diameter. The fluidized bed equipped with internals was used for lactose hydrolysis in partially deproteinized whey. The lactase from Aspergillus niger immobilized on silica gel particles of 125-160 molm had a half-life of approximately 1 mo.

  19. Fundamentals of Cavity-Enhanced Polarimetry for Parity-Nonconserving Optical Rotation Measurements: Application to Xe, Hg and I

    Bougas, L; von Klitzing, W; Rakitzis, T P


    We present the theoretical basis of a cavity-enhanced polarimetric scheme for the measurement of parity-nonconserving (PNC) optical rotation. We discuss the possibility of detecting PNC optical rotation in accessible transitions in metastable Xe and Hg, and ground state I. In particular, the physics of the PNC optical rotation is presented, and we explore the lineshape effects on the expected PNC optical rotation signals. Furthermore, we present an analysis of the eigenpolarizations of the cavity-enhanced polarimeter, which is necessary for understanding the measurement procedure and the ability of employing robust background subtraction procedures using two novel signal reversals. Using recent atomic structure theoretical calculations, we present simulations of the PNC optical rotation signals for all proposed transitions, assuming a range of experimentally feasible parameters. Finally, the possibility of performing sensitive measurements of the nuclear-spin-dependent PNC effects is investigated, for the odd...

  20. Optimizing of Culture Conditionin Horizontal Rotating Bioreactor


    1 IntroductionBioreactor is the most important equipment in tissue engineering. It can mimic the micro-environment of cell growth in vitro. At present, horizontal rotating bioreactor is the most advanced equipment for cell culture in the world. 2 Rotating bioreactors2.1 Working principleThere are two kinds of horizontal rotating bioreactor: HARV(high aspect ratio vessel) and RCCS (rotary cell culture system). It is drived by step motor with horizontal rotation, the culture medium and cell is filled between ...

  1. Optimizing of Culture Condition in Horizontal Rotating Bioreactor

    Yan-Fang ZHANG; Huai-Qing CHEN; Hua HUANG


    @@ 1 Introduction Bioreactor is the most important equipment in tissue engineering. It can mimic the micro-environment of cell growth in vitro. At present, horizontal rotating bioreactor is the most advanced equipment for cell culture in the world.

  2. Experience of high-nitrogenous steel powder application in repairs and surface hardening of responsible parts for power equipment by plasma spraying

    Kolpakov, A. S.; Kardonina, N. I.


    The questions of the application of novel diffusion-alloying high-nitrogenous steel powders for repair and surface hardening of responsible parts of power equipment by plasma spraying are considered. The appropriateness of the method for operative repair of equipment and increasing its service life is justified. General data on the structure, properties, and manufacture of nitrogen-, aluminum-, and chromium-containing steel powders that are economically alloyed using diffusion are described. It is noted that the nitrogen release during the decomposition of iron nitrides, when heating, protects the powder particles from oxidation in the plasma jet. It is shown that the coating retains 50% of nitrogen that is contained in the powder. Plasma spraying modes for diffusion-alloying high-nitrogenous steel powders are given. The service properties of plasma coatings based on these powders are analyzed. It is shown that the high-nitrogenous steel powders to a nitrogen content of 8.9 wt % provide the necessary wear resistance and hardness of the coating and the strength of its adhesion to the substrate and corrosion resistance to typical aggressive media. It is noted that increasing the coating porosity promotes stress relaxation and increases its thickness being limited with respect to delamination conditions in comparison with dense coatings on retention of the low defectiveness of the interface and high adhesion to the substrate. The examples of the application of high-nitrogenous steel powders in power engineering during equipment repairs by service companies and overhaul subdivisions of heat power plants are given. It is noted that the plasma spraying of diffusion-alloyed high-nitrogenous steel powders is a unique opportunity to restore nitrided steel products.

  3. Mathematical modeling of electro-rotation spectra of small particles in liquid solutions: Application to human erythrocyte aggregates

    A. Zehe


    Full Text Available Electro-rotation can be used to determine the dielectric properties of cells, as well as to observe dynamic changes in both dielectric and morphological properties. Suspended biological cells and particles respond to alternating-field polarization by moving, deforming or rotating. While in linearly polarized alternating fields the particles are oriented along their axis of highest polarizability, in circularly polarized fields the axis of lowest polarizability aligns perpendicular to the plane of field rotation. Ellipsoidal models for cells are frequently applied, which include, beside sphere-shaped cells, also the limiting cases of rods and disks. Human erythrocyte cells, due to their particular shape, hardly resemble an ellipsoid. The additional effect of rouleaux formation with different numbers of aggregations suggests a model of circular cylinders of variable length. In the present study, the induced dipole moment of short cylinders was calculated and applied to rouleaux of human erythrocytes, which move freely in a suspending conductive medium under the effect of a rotating external field. Electro-rotation torque spectra are calculated for such aggregations of different length. Both the maximum rotation speeds and the peak frequencies of the torque are found to depend clearly on the size of the rouleaux. While the rotation speed grows with rouleaux length, the field frequency nup is lowest for the largest cell aggregations where the torque shows a maximum.

  4. Electromechanical design and construction of a rotating radio-frequency coil system for applications in magnetic resonance.

    Trakic, Adnan; Weber, Ewald; Li, Bing Keong; Wang, Hua; Liu, Feng; Engstrom, Craig; Crozier, Stuart


    While recent studies have shown that rotating a single radio-frequency (RF) coil during the acquisition of magnetic resonance (MR) images provides a number of hardware advantages (i.e., requires only one RF channel, avoids coil-coil coupling and facilitates large-scale multinuclear imaging), they did not describe in detail how to build a rotating RF coil system. This paper presents detailed engineering information on the electromechanical design and construction of a MR-compatible RRFC system for human head imaging at 2 T. A custom-made (bladeless) pneumatic Tesla turbine was used to rotate the RF coil at a constant velocity, while an infrared optical encoder measured the selected frequency of rotation. Once the rotating structure was mechanically balanced and the compressed air supply suitably regulated, the maximum frequency of rotation measured ~14.5 Hz with a 2.4% frequency variation over time. MR images of a water phantom and human head were obtained using the rotating RF head coil system.

  5. Remote detection of rotating machinery with a portable atomic magnetometer.

    Marmugi, Luca; Gori, Lorenzo; Hussain, Sarah; Deans, Cameron; Renzoni, Ferruccio


    We demonstrate remote detection of rotating machinery, using an atomic magnetometer at room temperature and in an unshielded environment. The system relies on the coupling of the AC magnetic signature of the target with the spin-polarized, precessing atomic vapor of a radio-frequency optical atomic magnetometer. The AC magnetic signatures of rotating equipment or electric motors appear as sidebands in the power spectrum of the atomic sensor, which can be tuned to avoid noisy bands that would otherwise hamper detection. A portable apparatus is implemented and experimentally tested. Proof-of-concept investigations are performed with test targets mimicking possible applications, and the operational conditions for optimum detection are determined. Our instrument provides comparable or better performance than a commercial fluxgate and allows detection of rotating machinery behind a wall. These results demonstrate the potential for ultrasensitive devices for remote industrial and usage monitoring, security, and surveillance.

  6. Operator dermal exposure and protection provided by personal protective equipment and working coveralls during mixing/loading, application and sprayer cleaning in vineyards.

    Thouvenin, Isabelle; Bouneb, Françoise; Mercier, Thierry


    The efficiency of a working coverall combined with personal protective equipment to protect operators against dermal exposure to plant protection products under field conditions was studied. Operators wore a non-certified water-repellent finish polyester/cotton coverall plus a certified gown during the mixing/loading and the cleaning phases. Insecticide foliar application to a vineyard was selected as the exposure scenario. The overall dermal residue levels measured in this study were in the range of data recently collected in Europe. The water-repellent finish working coverall reduced body exposure by a factor of approximately 95%. Wearing a Category III Type 3 partial body gown during mixing/loading and cleaning of the application equipment led to a further protective effect of 98.7%. The combination of a water-repellent finish working coverall and partial body protection during specific tasks provided satisfactory levels of protection and can be considered as suitable protection for the conditions of use studied.

  7. Application of Step Control Technology on Rolling Lines Equipment System%步进控制技术在绕线设备系统中的应用



    In order to satisfy the requirements of stable and precise rolling for the rolling lines equipment sys-tem, the rolling lines equipment system based on step control technology is developed .After brief description the technology characteristics of step motor , step driver and step controller , the application of the step control technology on the rolling lines equipment system is discussed .The system constitution , working principle , technology characteristics and software and hardware implementation methods of the rolling lines equipment are introduced , and the electrical system wiring diagram and part of the control program block are given .Practical use indicates that the rolling lines equipment control system using step control technology has good real time property .The auto-parameters can be configured flexibly .The system has stable performance and high rolling precision , satisfying the technical requirements .%为了满足绕线设备系统的稳定精密绕制要求,研制了基于步进控制技术的绕线设备系统。在简述步进电机、步进驱动器及步进控制器技术特点的基础上,讲述了步进控制技术在绕线设备系统中的应用,介绍了绕线设备的系统组成、工作原理、技术特点和软硬件实现方法,并给出了设备电气系统接线图和部分系统控制程序段。使用结果表明,采用步进控制技术的绕线设备控制系统实时性好,自动参数可以灵活设置。系统性能稳定,绕线精度高,能满足工艺使用要求。

  8. Rotating Machinery Predictive Maintenance Through Expert System

    M. Sarath Kumar


    Full Text Available Modern rotating machines such as turbomachines, either produce or absorb huge amount of power. Some of the common applications are: steam turbine-generator and gas turbine-compressor-generator trains produce power and machines, such as pumps, centrifugal compressors, motors, generators, machine tool spindles, etc., are being used in industrial applications. Condition-based maintenance of rotating machinery is a common practice where the machine's condition is monitored constantly, so that timely maintenance can be done. Since modern machines are complex and the amount of data to be interpreted is huge, we need precise and fast methods in order to arrive at the best recommendations to prevent catastrophic failure and to prolong the life of the equipment. In the present work using vibration characteristics of a rotor-bearing system, the condition of a rotating machinery (electrical rotor is predicted using an off-line expert system. The analysis of the problem is carried out in an Object Oriented Programming (OOP framework using the finite element method. The expert system which is also developed in an OOP paradigm gives the type of the malfunctions, suggestions and recommendations. The system is implemented in C++.

  9. Aquatic Equipment Information.

    Sova, Ruth

    Equipment usually used in water exercise programs is designed for variety, intensity, and program necessity. This guide discusses aquatic equipment under the following headings: (1) equipment design; (2) equipment principles; (3) precautions and contraindications; (4) population contraindications; and (5) choosing equipment. Equipment is used…

  10. Dairy Equipment Lubrication


    Lake To Lake Dairy Cooperative, Manitowoc, Wisconsin, operates four plants in Wisconsin for processing milk, butter and cheese products from its 1,300 member farms. The large co-op was able to realize substantial savings by using NASA information for improved efficiency in plant maintenance. Under contract to Marshall Space Flight Center, Midwest Research Institute compiled a handbook consolidating information about commercially available lubricants. The handbook details chemical and physical properties, applications, specifications, test procedures and test data for liquid and solid lubricants. Lake To Lake's plant engineer used the handbook to effect savings in maintenance labor and materials costs by reducing the number of lubricants used on certain equipment. Strict U.S. Department of Agriculture and Food and Drug Administration regulations preclude lubrication changes n production equipment, but the co-op's maintenance chief was able to eliminate seven types of lubricants for ancillary equipment, such as compressors and high pressure pumps. Handbook data enabled him to select comparable but les expensive lubricants in the materials consolidation process, and simplified lubrication schedules and procedures. The handbook is in continuing use as a reference source when a new item of equipment is purchased.

  11. Rotating Wavepackets

    Lekner, John


    Any free-particle wavepacket solution of Schrodinger's equation can be converted by differentiations to wavepackets rotating about the original direction of motion. The angular momentum component along the motion associated with this rotation is an integral multiple of [h-bar]. It is an "intrinsic" angular momentum: independent of origin and…

  12. Nano-micro composite magnetic fluids: Magnetic and magnetorheological evaluation for rotating seal and vibration damper applications

    Marinică, Oana; Susan-Resiga, Daniela; Bălănean, Florica; Vizman, Daniel; Socoliuc, Vlad; Vékás, Ladislau


    In this paper, static magnetic properties and magnetorheological behavior of a set of 12 nano-micro composite magnetic fluids (CMFs) were studied. The samples with a ferromagnetic particle volume fraction ranging in a large interval φFe = (1 ÷ 44) % were prepared by adding carbonyl iron powder in a highly concentrated transformer oil-based ferrofluid (FF). The ferrofluid has the magnetite volume fraction of φFe3O4 = 22.90 % and saturation magnetization of Ms = 74 kA / m (930 Gs). No further additives were used in order to prevent sedimentation. It was noticed an increase of the static yield stress, of about 3 orders of magnitude, with the increase of the total solid volume fraction of samples and with the increase of the magnetic field, which varied between 0 kA/m and 950 kA/m. The dynamic yield stress (Herschel-Bulkley model) τHB of the samples strongly increases with the magnetic field and shows a slight tendency of saturation for higher intensities of the magnetic field. There is a less pronounced increase of τHB, about an order of magnitude with the increasing volume fraction of the iron particles. The relative viscosity increase induced by the magnetic field reaches a maximum for both considered shear rates: γ ṡ = 7.85s-1 and γ ṡ = 88.41s-1 and it was revealed an optimal volume fraction of Fe particles, φFe = 20 % , corresponding to a total volume fraction of φtot ≈ 38 % , at which the magnetoviscous effect has its maximum value. The magnetic properties and also the magnetorheological and the magnetoviscous behavior of highly concentrated ferrofluid-based CMFs can be controlled by the addition of iron microparticles in order to attain the optimal concentration for the envisaged engineering applications, rotating seals and magnetorheological vibration dampers.

  13. Relating Changes in Cometary Rotation to Activity: Current Status and Applications to Comet C/2012 S1 (ISON)

    Samarasinha, Nalin


    We introduce a parameter, X, to predict the changes in the rotational period of a comet in terms of the rotational period itself, the nuclear radius, and the orbital characteristics. We show that X should be a constant if the bulk densities and shapes of nuclei are nearly identical and the activity patterns are similar for all comets. For four nuclei for which rotational changes are well documented, despite the nearly factor 30 variation observed among the effective active fractions of these comets, X is constant to within a factor two. We present an analysis for the sungrazing comet C/2012 S1 (ISON) to explore what rotational changes it could undergo during the upcoming perihelion passage where its perihelion distance will be ~2.7 solar radii. When close to the sun, barring a catastrophic disruption of the nucleus, the activity of ISON will be sufficiently strong to put the nucleus into a non-principal-axis rotational state and observable changes to the rotational period should also occur. Additional causes ...

  14. Rotational elasticity

    Vassiliev, Dmitri


    We consider an infinite three-dimensional elastic continuum whose material points experience no displacements, only rotations. This framework is a special case of the Cosserat theory of elasticity. Rotations of material points are described mathematically by attaching to each geometric point an orthonormal basis that gives a field of orthonormal bases called the coframe. As the dynamical variables (unknowns) of our theory, we choose the coframe and a density. We write down the general dynamic variational functional for our rotational theory of elasticity, assuming our material to be physically linear but the kinematic model geometrically nonlinear. Allowing geometric nonlinearity is natural when dealing with rotations because rotations in dimension three are inherently nonlinear (rotations about different axes do not commute) and because there is no reason to exclude from our study large rotations such as full turns. The main result of the talk is an explicit construction of a class of time-dependent solutions that we call plane wave solutions; these are travelling waves of rotations. The existence of such explicit closed-form solutions is a non-trivial fact given that our system of Euler-Lagrange equations is highly nonlinear. We also consider a special case of our rotational theory of elasticity which in the stationary setting (harmonic time dependence and arbitrary dependence on spatial coordinates) turns out to be equivalent to a pair of massless Dirac equations. The talk is based on the paper [1]. [1] C.G.Boehmer, R.J.Downes and D.Vassiliev, Rotational elasticity, Quarterly Journal of Mechanics and Applied Mathematics, 2011, vol. 64, p. 415-439. The paper is a heavily revised version of preprint


    J.K. Visser


    Full Text Available

    ENGLISH ABSTRACT: Mechanical equipment used on process plants can be categorised into two main types, namely static and rotating equipment. A brief survey at a number of chemical process plants indicated that a number of maintenance strategies exist and are used for rotating equipment. However, some of these strategies are not directly applicable to static equipment, although the risk-based inspection (RBI methodology has been developed for pressure vessels. A generalised risk-based maintenance strategy for all types of static equipment does not currently exist. This paper describes the development of an optimised model of inspection methodologies, maintenance strategies, and risk management principles that are generically applicable for static equipment. It enables maintenance managers and engineers to select an applicable maintenance strategy and inspection methodology, based on the operational and business risks posed by the individual pieces of equipment.

    AFRIKAANSE OPSOMMING: Meganiese toerusting wat op prosesaanlegte gebruik word kan in twee kategorieë verdeel word, naamlik statiese en roterende toerusting. 'n Bondige ondersoek by 'n aantal chemiese prosesaanlegte het aangedui dat 'n aantal strategieë vir instandhouding van roterende toerusting gebruik word, terwyl die risikogebaseerde inspeksiemetodologie wel vir drukvate gebruik word. 'n Algemene risikogebaseerde instandhoudingstrategie vir alle tipes statiese toerusting is egter nie tans beskikbaar nie. Hierdie artikel beskryf die ontwikkeling van 'n geoptimeerde model van inspeksiemetodologieë, instandhoudingstrategieë, en risikobestuursbeginsels wat algemeen gebruik kan word vir statiese toerusting. Dit stel die instandhouding-bestuurders en -ingenieurs in staat om 'n instandhoudingstrategie en inspeksie-metodologie te kies, gebaseer op die operasionele en besigheidsrisiko's van die individuele toerusting.

  16. 大型机械设备融资租赁应用研究%Application of Finance Lease for the Large Mechanism Equipment



    大型机械设备是许多企业生产经营的核心,融资租赁作为一种新型的金融工具,可实现融资、融物的有机结合,逐渐成为企业添置大型设备的主流方式之一。首先,分析了融资租赁的特点;其次,分析了融资租赁应用过程中存在的风险;最后,提出了企业应用融资租赁的对策建议。%The large mechanism equipment is the core of many enterprise production and business operation .As a new type of fi‐nancial tool ,finance lease can realize the combination of financing ,and it gradually becomes the mainstream of enterprise acquire large equipment .Firstly ,this paper analyzes the characteristics of finance lease ;Secondly ,the risks existing in application of fi‐nance lease are analyzed ;Finally ,this paper puts forward the suggestions on enterprise finance lease .

  17. Development of an application to control the dose delivered by digital radiology equipment; Elaboracion de una aplicacion para el control de la dosis impartida por equipos de radiologia digital

    Andres Rodriguez, C.; Torres Cabrera, R.; Aguila Otero, M.; Hernando Gonzalez, I.


    One of the advantages associated with the incorporation of digital X-ray equipment in diagnostic imaging services is the ability to access the vast amount of information stored in the header of the images themselves. This work shows the experience in the development of an application to the calculation and control of the dose given to patients by general radiology digital equipment from such information.

  18. 静压轴承在球磨机改造中的应用%Application of Hydrostatic Bearing in Renovation of Ball-Grinding Equipment Device

    徐广普; 吴晓元; 陈忠基; 王安清


    By analysing 3231 case about ball-grinding equipment of Anshanmine corportion and discussing about hydrostatic bearing design and the implement of renovation. It is showed that the hydrostatic bearings have wide application in the low speed and heavy loads, meanwhile the considerable profit for enterprises can be brought.%通过对东烧厂3231球磨机的工况分析、静压轴承设计方案讨论和实施球磨机静压轴承改造的总结,表明静压轴承在低速重载设备上的应用前景广阔,可为企业带来十分可观的经济效益.

  19. Overseas Coal Gasification Equipment Technology and Its Application in China%国外煤气化设备技术及在中国的应用



    对几种煤气化炉炉型进行了技术对比。论述了煤气化技术的选用原则。分析了我国煤气化技术装备需要解决的一些问题。通过实例较详细地介绍了国外煤气化技术在中国的应用。%The technical comparison between different types of the coal gasification furnaces is presented and the selection principal of the coal gasification technology is discussed. Furthermore, the unsolved problems in the coal gasification equipment of Chinese enterprises are analyzed. The applications of the overseas coal gasification technology in China are introduced through case study.

  20. RIA Technology Application in Medical Equipment Repair System%RIA技术在医疗设备报修系统中的应用

    蒋友好; 彭文; 蒋宁峰; 孔令伟; 马力; 殷佩浩; 孙成


      RIA富互联网应用具有高度互动性、丰富用户体验以及功能强大的客户端。在介绍R IA技术的概念、特点以及技术平台的基础上,指出RIA方式应该是医院医疗设备管理信息系统建设的最优先考虑方案。%RIA(Rich Internet Applications) have highly interactive,rich user experience and powerful clients. Based on introducing the concept, features, and technology platform of the RIA technology, we proposed that RIA should be the highest priority in hospital medical equipment management information system construction.

  1. Research and application of medical equipment quality management%医疗设备质量管理信息化的应用研究



    目的:探索和研究如何利用信息化进行医疗设备应用质量管理。方法:通过对现有医疗设备应用质量管理工作存在的问题进行分析,找出利用信息化解决的办法,并设计出信息化软件系统的功能模块、工作流程等。结果:设计和开发出一套用于医疗设备应用质量管理的软件系统,实现了包括医疗设备的维修管理、计量管理、风险管理、不良事件、操作规程、技术培训、预防性维护(PM)以及使用评价等多个功能。结论:该系统将医疗设备应用质量管理的各个环节有机地结合在一起,体现出医疗设备生命周期全过程质量控制的管理理念,符合生物医学工程学科的未来发展方向,可满足医院医疗设备应用质量管理工作的新要求。%Objective: To explore and study how to use information technology to carry out quality management of medical device applications. Methods:The medical device applications through the existing problems in quality management analysis to identify the use of information technology solutions, and design information software system functional modules, workflow and so on. Results:The design and development of a set of used medical equipment application of quality management file system, including the realization of medical equipment maintenance management, measurement and management, risk management, adverse events, procedures, technical training, preventive maintenance (PM), use of evaluation and many other functions. Conclusion:The system of medical device applications of organic quality management of all aspects together, reflecting the quality control throughout the life cycle management concept, conform biomedical engineering disciplines in the future development direction of the hospital to meet the quality management of medical device applications work of the new requirements.

  2. Body-fixed relativistic molecular Hamiltonian and its application to nuclear spin-rotation tensor: linear molecules.

    Xiao, Yunlong; Liu, Wenjian


    The relativistic molecular Hamiltonian written in the body-fixed frame of reference is the basis for high-precision calculations of spectroscopic parameters involving nuclear vibrations and/or rotations. Such a Hamiltonian that describes electrons fully relativistically and nuclei quasi-relativistically is just developed for semi-rigid nonlinear molecules [Y. Xiao and W. Liu, J. Chem. Phys. 138, 134104 (2013)]. Yet, the formulation should somewhat be revised for linear molecules thanks to some unusual features arising from the redundancy of the rotation around the molecular axis. Nonetheless, the resulting isomorphic Hamiltonian is rather similar to that for nonlinear molecules. Consequently, the relativistic formulation of nuclear spin-rotation (NSR) tensor for linear molecules is very much the same as that for nonlinear molecules. So is the relativistic mapping between experimental NSR and NMR.

  3. The long-term rotational stability of terrestrial planets with viscoelastic lithospheres: A new theory with application to Mars

    Moore, K.; Chan, N. H.; Daradich, A.; Mitrovica, J. X.


    The long-term rotational stability of terrestrial planets is a classic problem in geophysics and planetary science. Modern theoretical treatments stem from Gold (1955) and Goldreich and Toomre (1969) who: (1) argued that the rotation axis orientation of terrestrial planets is inherently unstable since any stabilization due to the rotational bulge is transient; and (2) established conditions for rapid, large-scale reorientation of the axis relative to the surface geography (true polar wander, TPW). Willemann (1984) and Matsuyama et al. (2006) extended this work, demonstrating that an elastic lithosphere stabilizes the rotation axis through elastic stresses induced in the lithosphere by planetary reorientation. In this case, the magnitude of load-induced TPW can be significantly more muted. The above studies describe equilibrium theories concerned with the final state of the rotation axis. More recent studies (e.g., Ricard et al., 1993; Tsai & Stevenson, 2007; Harada, 2012; Chan et al., 2014) incorporate time dependence into the governing theory. We build on this earlier work to derive a new theory of time-dependent TPW on terrestrial planets with viscoelastic lithospheres. Our formalism more realistically models the time evolution of TPW by bridging the two end-member cases: an infinite viscosity (elastic) lithosphere; and a fully relaxed, finite viscosity lithosphere that provides no stabilization. On short timescales the rotation axis is stabilized by the lithosphere (the Willemann case), but on timescales longer than the relaxation time of the lithosphere the axis becomes unstable (the Gold case). We illustrate our theory with numerical simulations for Mars. Published work suggests that Martian TPW would not continue for any significant time after the addition of a load, and thus that an equilibrium theory is adequate. Our results demonstrate, in contrast, that the slow relaxation of a high viscosity lithosphere can lead to TPW on Mars that continues for billions

  4. Application of the rotational path design concept to a removable partial denture with a distal-extension base.

    Asher, M L


    Biomechanical considerations for use of the rotational path design concept to construct a removable partial denture for a patient with a tooth-bounded ridge on one side and a distal-extension ridge on the opposite side are presented. The various axes and arcs of rotation that occur during masticatory function are identified and their effects on the prosthesis and supporting structures are analyzed. Sequential steps in the necessary surveys of the master cast are enumerated. Critical details for the most effective and least deleterious placement of the rigid retentive element on the mesial surface of the posterior molar abutment (on the tooth-bounded ridge) are described.

  5. Cell culture for three-dimensional modeling in rotating-wall vessels: an application of simulated microgravity

    Schwarz, R. P.; Goodwin, T. J.; Wolf, D. A.


    High-density, three-dimensional cell cultures are difficult to grow in vitro. The rotating-wall vessel (RWV) described here has cultured BHK-21 cells to a density of 1.1 X 10(7) cells/ml. Cells on microcarriers were observed to grow with enhanced bridging in this batch culture system. The RWV is a horizontally rotated tissue culture vessel with silicon membrane oxygenation. This design results in a low-turbulence, low-shear cell culture environment with abundant oxygenation. The RWV has the potential to culture a wide variety of normal and neoplastic cells.

  6. Integration of crop rotation and arbuscular mycorrhiza (AM) inoculum application for enhancing AM activity to improve phosphorus nutrition and yield of upland rice (Oryza sativa L.).

    Maiti, Dipankar; Toppo, Neha Nancy; Variar, Mukund


    Upland rice (Oryza sativa L.) is a major crop of Eastern India grown during the wet season (June/July to September/October). Aerobic soils of the upland rice system, which are acidic and inherently phosphorus (P) limiting, support native arbuscular mycorrhizal (AM) activity. Attempts were made to improve P nutrition of upland rice by exploiting this natural situation through different crop rotations and application of AM fungal (AMF) inoculum. The effect of a 2-year crop rotation of maize (Zea mays L.) followed by horse gram (Dolichos biflorus L.) in the first year and upland rice in the second year on native AM activity was compared to three existing systems, with and without application of a soil-root-based inoculum. Integration of AM fungal inoculation with the maize-horse gram rotation had synergistic/additive effects in terms of AMF colonization (+22.7 to +42.7%), plant P acquisition (+11.2 to +23.7%), and grain yield of rice variety Vandana (+25.7 to +34.3%).

  7. Application of RFID in inventory management about experimental equipment%RFID 在实验设备库存管理中的应用研究

    王艳; 孟勤; 刘昕; 王睿


    为了提高实验设备库存管理的工作效率和资源的合理化配置水平,对射频识别技术(RFID)在实验设备库存管理中的应用进行了研究。首先,对基于 RFID 的实验设备库存管理业务流程进行了分析与优化,接着,设计了基于 B/S 与 C/S 分层混合结构的 RFID 实验设备库存管理系统总体架构,然后,提出了 RFID 系统与现有实验设备库存管理系统的集成方案,最后,采用多读头单工作站网络系统模型完成对 RFID 数据采集系统的实施部署,并成功地应用于吉林大学实验设备管理中心。实践结果表明,RFID 系统的应用极大地提高了管理效率和设备资源的利用率。%In order to improve the efficiency of inventory management about the experimental equipment,the application of radio frequency identification (RFID)technology in inventory management is researched.First, the business process of the inventory management is analyzed and optimized based on RFID.Then,the overall architecture of layered hybrid structures about RFID inventory management system is designed based on C/S and B/S .Then the integration scheme is proposed about the RFID system and the inventory management system.Last,the network system model of multi read head and single workstation is adopted to implement the RFID data acquisition system,and the RFID system is successfully applied by the Experimental Equipment Management Center of Jilin University.The practice shows that the application of RFID system has improved the efficiency of management and utilization ratio of the experimental equipment.

  8. DNA微阵列数据判别的旋转森林方法%The Application of Rotation Forest for the Classification of DNA Microarray Data

    陈金瓯; 柳青


    Objective To research the application of rotation forest for the classification of DNA microarray data. Methods The rota-tion forest algorithm applied to four classic microarray data then compared the discriminate results with other classification methods. The results also show the effect of classification with changing the parameters of the rotation forest algorithm. Results The rotation forest performs high accuracy in classification of gene expression data. Except the linear transformation methods and the size of ensemble, the classification accuracy keeping stable while changing other parameters of the algorithm. Conclusion The rota-tion forest show excellent performance in classification of gene expression data.%目的 探讨旋转森林算法在DNA微阵列数据分类中的应用.方法 通过对四个经典基因表达数据的分析考察旋转森林的分类效果,并与其他分类器进行比较,进一步调整算法参数并研究其对分类效果产生的影响.结果 旋转森林对基因表达数据有较高且稳定的分类准确性,除了线性变换方式和集成规模对分类性能影响较大,分类效果不随算法其他几个主要参数变化.结论 旋转森林在基因表达谱数据分类中有较好的判别结果.

  9. Type Selection and the Applicated Condition Evaluation on New Weaving Equipment%新型织造设备选型及使用情况评估

    瞿才新; 林元宏; 刘华; 陈桂春


    According to the collecting of some related technical datas,byusing the curve planimetry and making a comparition on the differences among every loom's targets,the ideal type of looms was found by calculating the area of the close curve.According to the comparition of the differences between using level and the ideal level on new type looms,by the analyses and the evaluation of application condition on new type looms,a simple and a effective method on type selection,applicated condition evaluation and making further management and application of equipments was showed,it means curve planimetry.%通过收集有关技术指标数据,采用曲线求积法,比较各种织机指标差异,求得其封闭曲线的面积,找出理想的机型;通过比较新型织造设备的使用水平与理想水平的差异,分析评估新型织造设备的使用情况,说明:曲线求积法可作为设备选型和使用情况评估以及进一步用好、管好设备的一种简单而有效的方法。

  10. 浅谈大数据在装备保障中的应用%Research on Big Data Applications in Equipment Support

    张雯皓; 王学智


    近两年,大数据在各行业中的应用层出不穷。在今年召开的“两会”上,有关大数据的提案如“井喷”,尤其是民建中央的提案直言应将大数据发展上升为国家战略。在国家如此重视大数据应用的情况下,军事领域的应用也将成为必然趋势。在此针对大数据应用于装备保障领域提出一些个人观点,希望对大数据技术在军事上的应用提供一些参考。%For the past two years, big data has been in application in various businesses. In this year’s “two sessions”, the proposals on the big data emerged in large numbers, specially some representative’s proposal suggested that big data should be seen as a national strategy. Big data applications in military field will become an inevitable trend. This paper puts forward some personal views about big data applications in equipment support, hoping to provide a favorable reference to the big data technology in the military field.

  11. 快速响应二维码在医院医疗设备管理中的应用%Research on QR code in the application of the hospital medical equipment management

    黄润达; 谭剑; 黄煌镜; 廖生武; 吴汉新; 刘萍山


    Objective:To strengthen the hospital medical equipment information management level by the application of QR code technology.Methods: Using QR code technology, through the QR code generator and phone WeChat platform, making medical equipment QR code label assets, setting up medical equipment information website, the medical equipment information networking, and dynamic management of hospital medical equipment.Results: On the basis of electronic archives in medical equipment by using of QR code asset tag, it realizes real-time tracking in the mobile WeChat platform and remote medical equipment management. Conclusion: Medical equipment resources reasonable application and effective regulation and improve the management level of hospital medical equipment.%目的:通过快速响应(QR)二维码技术在医院医疗设备管理中的应用,提高医院医疗设备信息化管理水平.方法:运用QR二维码技术,通过QR二维码生成器和手机微信平台,制作医疗设备QR二维码资产标签,建立医疗设备信息化网站,实行医疗设备信息联网,从而进行医院医疗设备动态管理.结果:在医疗设备电子档案的基础上利用QR二维码资产标签,实现在手机微信平台实时跟踪,进而实施医院医疗设备的远程管理.结论:QR二维码技术的应用可使医疗设备资源合理使用与调控,并可有效提高医院医疗设备的管理水平.

  12. 浅谈麻醉机的应用管理%Brief Talk on Anesthetic Equipment Application Management



    随着科学技术的发展,高新技术的应用,麻醉机在功能上亦趋于多样化,精密化及智能化.麻醉机的应用管理是临床麻醉工作及设备管理过程中不可缺少的重要环节.本文阐述了麻醉机应用管理的具体做法,以达到麻醉机更好地为临床服务的目的.%The anesthetic is one kind of the life support medical device. With the development of science technology and the introduction of hi-tech, the anesthetic become more variable, precision and intelligentized. The application management of anesthetic is very important in anesthesia and medical device management. This paper expatiate the application management which will be benefit to the clinical practice.

  13. Spectroastrometry of rotating gas disks for the detection of supermassive black holes in galactic nuclei. II. Application to the galaxy Centaurus A (NGC 5128)

    Gnerucci, A; Capetti, A; Axon, D J; Robinson, A; Neumayer, N


    We measure the black hole mass in the nearby active galaxy Centaurus A (NGC 5128) using a new method based on spectroastrometry of a rotating gas disk. The spectroastrometric approach consists in measuring the photocenter position of emission lines for different velocity channels. In a previous paper we focused on the basic methodology and the advantages of the spectroastrometric approach with a detailed set of simulations demonstrating the possibilities for black hole mass measurements going below the conventional spatial resolution. In this paper we apply the spectroastrometric method to multiple longslit and integral field near infrared spectroscopic observations of Centaurus A. We find that the application of the spectroastrometric method provides results perfectly consistent with the more complex classical method based on rotation curves: the measured BH mass is nearly independent of the observational setup and spatial resolution and the spectroastrometric method allows the gas dynamics to be probed down...

  14. Design and testing of Ground Penetrating Radar equipment dedicated for civil engineering applications: ongoing activities in Working Group 1 of COST Action TU1208

    Pajewski, Lara; Manacorda, Guido; Persico, Raffaele


    This work aims at presenting the ongoing research activities carried out in Working Group 1 'Novel GPR instrumentation' of the COST (European COoperation in Science and Technology) Action TU1208 'Civil Engineering Applications of Ground Penetrating Radar' ( The principal goal of the COST Action TU1208 is to exchange and increase scientific-technical knowledge and experience of GPR techniques in civil engineering, simultaneously promoting throughout Europe the effective use of this safe and non-destructive technique in the monitoring of infrastructures and structures. Working Group 1 (WG1) of the Action focuses on the development of innovative GPR equipment dedicated for civil engineering applications. It includes three Projects. Project 1.1 is focused on the 'Design, realisation and optimisation of innovative GPR equipment for the monitoring of critical transport infrastructures and buildings, and for the sensing of underground utilities and voids.' Project 1.2 is concerned with the 'Development and definition of advanced testing, calibration and stability procedures and protocols, for GPR equipment.' Project 1.3 deals with the 'Design, modelling and optimisation of GPR antennas.' During the first year of the Action, WG1 Members coordinated between themselves to address the state of the art and open problems in the scientific fields identified by the above-mentioned Projects [1, 2]. In carrying our this work, the WG1 strongly benefited from the participation of IDS Ingegneria dei Sistemi, one of the biggest GPR manufacturers, as well as from the contribution of external experts as David J. Daniels and Erica Utsi, sharing with the Action Members their wide experience on GPR technology and methodology (First General Meeting, July 2013). The synergy with WG2 and WG4 of the Action was useful for a deep understanding of the problems, merits and limits of available GPR equipment, as well as to discuss how to quantify the reliability of GPR results. An

  15. Rotation grazing as a conservation management tool : Vegetation changes after six years of application in a salt marsh ecosystem

    Lagendijk, D. D. Georgette; Howison, Ruth A.; Esselink, Peter; Ubels, Richard; Smit, Christian


    Grazing is commonly used in conservation to promote biodiversity, but the search for a grazing management regime that optimises biodiversity is still ongoing. Rotation grazing, where grazing is followed by a relatively long period of non-grazing, is a relative new tool in conservation management,

  16. A study on heat-flow analysis of friction stir welding on a rotation affected zone

    Kang, Sung Wook; Jang, Beom Seon [Seoul National University, Seoul (Korea, Republic of); Kim, Jae Woong [Daewoo Shipbuilding and Marine Engineering Co., Soeul (Korea, Republic of)


    In recent years, as interest in environmental protection and energy conservation rose, technological development for lightweight efficiency of transport equipment, such as aircrafts, railcars, automobiles and vessels, have been briskly proceeding. This has led to an expansion of the application of lightweight alloys such as aluminum and magnesium. For the welding of these lightweight alloys, friction stir welding has been in development by many researchers. Heat-flow analysis of friction stir welding is one such research. The flow and energy equation is solved using the computational fluid dynamic commercial program 'Fluent'. In this study, a rotation affected zone concept is imposed. The rotation affected zone is a constant volume. In this volume, flow is rotated the same as the tool rotation speed and so plastic dissipation occurs. Through this simulation, the temperature distribution results are calculated and the simulation results are compared with the experimental results.

  17. The rotating quantum vacuum

    Davies, Paul Charles William; Manogue, C A; Davies, Paul C W; Dray, Tevian; Manogue, Corinne A


    We derive conditions for rotating particle detectors to respond in a variety of bounded spacetimes and compare the results with the folklore that particle detectors do not respond in the vacuum state appropriate to their motion. Applications involving possible violations of the second law of thermodynamics are briefly addressed.

  18. Application of 3D Printing Technology in Electronic Equipment Industry%3D打印技术在电子设备行业的应用



    3D打印是最近几年开始流行的,以成形速度快为特点的打印新技术,最基本的组成元件,就是数字模型,能够按照实物本身的特点和结构,进行分层次的打印,最终形成实际产品,这项技术涉及信息技术、材料科学、精密机械等多个学科领域。在电子设备行业中,3D打印技术也得到了广泛的应用,文章将对3D打印技术进行简单介绍,并对3D技术在电子设备行业中所发挥的作用和应用进行简单探讨。%3D printing is the most popular in recent years, with the characteristics of forming speed printing new technology, the most basic components, is the digital model, can be in accordance with the characteristics and structure of the material itself, the level of printing, eventually forming the actual product, the technology involved in information technology, materials science, precision machinery and other ifelds. In the electronic equipment industry, 3D printing technology has been widely used, the article will be a brief introduction to 3D printing technology, and the role and application of 3D technology in the electronic equipment industry is simply discussed.

  19. Rotation of the planet mercury.

    Jefferys, W H


    The equations of motion for the rotation of Mercury are solved for the general case by an asymptotic expansion. The findings of Liu and O'Keefe, obtained by numerical integration of a special case, that it is possible for Mercury's rotation to be locked into a 2:3 resonance with its revolution, are confirmed in detail. The general solution has further applications.

  20. Application of quasi-degenerate perturbation theory to the calculation of rotational energy levels of methane vibrational polyads

    Cassam-Chenaï, P., E-mail:; Rousseau, G.; Ilmane, A. [University Nice Sophia Antipolis, CNRS, LJAD, UMR 7351, 06100 Nice (France); Bouret, Y. [University Nice Sophia Antipolis, CNRS, LPMC, UMR 7336, 06100 Nice (France); Rey, M. [Groupe de Spectrométrie Moléculaire et Atmosphérique, CNRS UMR 6089, BP 1039, F-51687 Reims Cedex 2 (France)


    In previous works, we have introduced an alternative perturbation scheme to find approximate solutions of the spectral problem for the rotation-vibration molecular Hamiltonian. An important feature of our approach is that the zero order Hamiltonian is the direct product of a purely vibrational Hamiltonian with the identity on the rotational degrees of freedom. The convergence of our method for the methane vibrational ground state was very satisfactory and our predictions were quantitative. In the present article, we provide further details on the implementation of the method in the degenerate and quasi-degenerate cases. The quasi-degenerate version of the method is tested on excited polyads of methane, and the results are assessed with respect to a variational treatment. The optimal choice of the size of quasi-degenerate spaces is determined by a trade-off between speed of convergence of the perturbation series and the computational effort to obtain the effective super-Hamiltonian.

  1. Application of SVM and SVD Technique Based on EMD to the Fault Diagnosis of the Rotating Machinery

    Junsheng Cheng


    Full Text Available Targeting the characteristics that periodic impulses usually occur whilst the rotating machinery exhibits local faults and the limitations of singular value decomposition (SVD techniques, the SVD technique based on empirical mode decomposition (EMD is applied to the fault feature extraction of the rotating machinery vibration signals. The EMD method is used to decompose the vibration signal into a number of intrinsic mode functions (IMFs by which the initial feature vector matrices could be formed automatically. By applying the SVD technique to the initial feature vector matrices, the singular values of matrices could be obtained, which could be used as the fault feature vectors of support vector machines (SVMs classifier. The analysis results from the gear and roller bearing vibration signals show that the fault diagnosis method based on EMD, SVD and SVM can extract fault features effectively and classify working conditions and fault patterns of gears and roller bearings accurately even when the number of samples is small.

  2. The Local Instability of Steady Astrophysical Flows with non Circular Streamlines with Application to Differentially Rotating Disks with Free Eccentricity

    Papaloizou, J C B


    We carry out a general study of the stability of astrophysical flows that appear steady in a uniformly rotating frame. Such a flow might correspond to a stellar pulsation mode or an accretion disk with a free global distortion giving it finite eccentricity. We consider perturbations arbitrarily localized in the neighbourhood of unperturbed fluid streamlines.When conditions do not vary around them, perturbations take the form of oscillatory inertial or gravity modes. However, when conditions do vary so that a circulating fluid element is subject to periodic variations, parametric instability may occur. For nearly circular streamlines, the dense spectra associated with inertial or gravity modes ensure that resonance conditions can always be satisfied when twice the period of circulation round a streamline falls within. We apply our formalism to a differentially rotating disk for which the streamlines are Keplerian ellipses, with free eccentricity up to 0.7, which do not precess in an inertial frame. We show tha...

  3. A New Continuous Rotation IMU Alignment Algorithm Based on Stochastic Modeling for Cost Effective North-Finding Applications

    Yun Li


    Full Text Available Based on stochastic modeling of Coriolis vibration gyros by the Allan variance technique, this paper discusses Angle Random Walk (ARW, Rate Random Walk (RRW and Markov process gyroscope noises which have significant impacts on the North-finding accuracy. A new continuous rotation alignment algorithm for a Coriolis vibration gyroscope Inertial Measurement Unit (IMU is proposed in this paper, in which the extended observation equations are used for the Kalman filter to enhance the estimation of gyro drift errors, thus improving the north-finding accuracy. Theoretical and numerical comparisons between the proposed algorithm and the traditional ones are presented. The experimental results show that the new continuous rotation alignment algorithm using the extended observation equations in the Kalman filter is more efficient than the traditional two-position alignment method. Using Coriolis vibration gyros with bias instability of 0.1°/h, a north-finding accuracy of 0.1° (1σ is achieved by the new continuous rotation alignment algorithm, compared with 0.6° (1σ north-finding accuracy for the two-position alignment and 1° (1σ for the fixed-position alignment.

  4. A New Continuous Rotation IMU Alignment Algorithm Based on Stochastic Modeling for Cost Effective North-Finding Applications

    Li, Yun; Wu, Wenqi; Jiang, Qingan; Wang, Jinling


    Based on stochastic modeling of Coriolis vibration gyros by the Allan variance technique, this paper discusses Angle Random Walk (ARW), Rate Random Walk (RRW) and Markov process gyroscope noises which have significant impacts on the North-finding accuracy. A new continuous rotation alignment algorithm for a Coriolis vibration gyroscope Inertial Measurement Unit (IMU) is proposed in this paper, in which the extended observation equations are used for the Kalman filter to enhance the estimation of gyro drift errors, thus improving the north-finding accuracy. Theoretical and numerical comparisons between the proposed algorithm and the traditional ones are presented. The experimental results show that the new continuous rotation alignment algorithm using the extended observation equations in the Kalman filter is more efficient than the traditional two-position alignment method. Using Coriolis vibration gyros with bias instability of 0.1°/h, a north-finding accuracy of 0.1° (1σ) is achieved by the new continuous rotation alignment algorithm, compared with 0.6° (1σ) north-finding accuracy for the two-position alignment and 1° (1σ) for the fixed-position alignment. PMID:27983585

  5. 某核电厂调试期间立式转动设备结构性共振问题分析及探讨%Analysis and Discussion on the Structural Resonance of Vertical Rotating Equipment During the Commissioning of a Nuclear Power Plant

    徐伟祖; 王有勇; 陈伟民


    The vibrations of vertical rotating equipment expending bounds in period of commissioning and operation are common Faults. There are a lot of reasons which can cause vibration. At present, spectrum analysis is a conventional method to analyses vibration in domes-tic nuclear power counterparts. The same spectrum usually corresponds to different fault phenomena. How to accurately locate the excitation source puts higher requirements on the theoretical level and working experience of vibration diagnosis workers. According to the structural resonance cases of rotating machinery during commissioning of a nuclear power plant, this paper describes and discusses structural reso-nance of vertical rotating machinery from the fault phenomenon, diagnostic procedures, treatment plan and treatment results, in order to pro-vide experience and reference for the following plant commissioning and operation.%立式转动设备振动超标在机组调试及试运行期间较为常见,导致设备振动的原因种类较多,目前国内核电厂同行常用的故障诊断手段为频谱分析,同一个频谱对应的故障现象较多,实际工作中,如何准确定位激振源,对振动诊断工作者的理论水平及工作经验提出较高的要求.该文结合国内某核电厂调试期间旋转机械结构性共振处理案例,从故障现象、诊断过程、处理方案及处理结果四个方面进行说明及探讨,为后续机组调试及运行提供经验及参考.

  6. Spatial variability of soil total and DTPA-extractable cadmium caused by long-term application of phosphate fertilizers, crop rotation, and soil characteristics.

    Jafarnejadi, A R; Sayyad, Gh; Homaee, M; Davamei, A H


    Increasing cadmium (Cd) accumulation in agricultural soils is undesirable due to its hazardous influences on human health. Thus, having more information on spatial variability of Cd and factors effective to increase its content on the cultivated soils is very important. Phosphate fertilizers are main contamination source of cadmium (Cd) in cultivated soils. Also, crop rotation is a critical management practice which can alter soil Cd content. This study was conducted to evaluate the effects of long-term consumption of the phosphate fertilizers, crop rotations, and soil characteristics on spatial variability of two soil Cd species (i.e., total and diethylene triamine pentaacetic acid (DTPA) extractable) in agricultural soils. The study was conducted in wheat farms of Khuzestan Province, Iran. Long-term (27-year period (1980 to 2006)) data including the rate and the type of phosphate fertilizers application, the respective area, and the rotation type of different regions were used. Afterwards, soil Cd content (total or DTPA extractable) and its spatial variability in study area (400,000 ha) were determined by sampling from soils of 255 fields. The results showed that the consumption rate of di-ammonium phosphate fertilizer have been varied enormously in the period study. The application rate of phosphorus fertilizers was very high in some subregions with have extensive agricultural activities (more than 95 kg/ha). The average and maximum contents of total Cd in the study region were obtained as 1.47 and 2.19 mg/kg and DTPA-extractable Cd as 0.084 and 0.35 mg/kg, respectively. The spatial variability of Cd indicated that total and DTPA-extractable Cd contents were over 0.8 and 0.1 mg/kg in 95 and 25 % of samples, respectively. The spherical model enjoys the best fitting and lowest error rate to appraise the Cd content. Comparing the phosphate fertilizer consumption rate with spatial variability of the soil cadmium (both total and DTPA extractable) revealed the high

  7. Equipment. Out of order.

    Connolly, C


    The NHS has underinvested in equipment for more than 20 years. Most hospitals have inadequate equipment inventories. More than half the anaesthetic machines in use are more than five years old and should be replaced. Almost a fifth of the equipment used in cancer treatment is obsolete. Current accounting systems act as a disincentive to replacing old equipment.

  8. MUSICA参数在口腔曲面全景CR摄影中的应用%Application of MUSICA to Oral Rotational Panoramic Radiography

    王鑫; 田岚; 常冬梅; 赵春阳; 张博; 苏晓娟


    目的:通过多级图像对比度放大技术(multi-scale image contrast amplification,MUSICA)的运用,提高口腔曲面全景摄影的影像质量.方法:随机抽取50例口腔曲面全景图像,经MUSICA处理后,获得原始组、处理组图像共100幅,由2位主管技师和一位诊断医师对100幅图像牙列区和下颌骨切牙区作主观评价,对统计数据应用SPSS12.0进行分析,P<0.05有统计学意义.结果:卡方检验结果x2=6.797,P=0.033<0.05,2组数据对比有统计学意义.结论:MU-SICA可以明显提高口腔曲面全景摄影的影像质量.%Objective To improve the image quality of oral rotational panoramic radiography by using multi-scale image contrast amplification (MUSIA) algorithm. Methods Fifty cases were chosen at random and treated with MUSICA algorithm, then 100 images were obtained, including 50 raw ones of the control group and 50 treated ones of the treatment group. The subjective evaluation was made by two supervising technicians. Data were analyzed by chi-square of SPSS 12.0', Results Chi-square test, with x2 equal to 6.797 and P less than 0.05, indicated that there was statistically significant difference between two groups. Coacbjsiari MUSICA algorithm can significantly improve the image quality of oral rotational panoramic radiography.[Chinese Medical Equipment Journal ,2012,33(7) :66,68

  9. Influencia del alineamiento en frío. Análisis y métodos de corrección // Influence in rotating equipment of alignment in cool stage. Analysis and corrections methods.

    Y. M. Abreu-Rivero


    Full Text Available En trabajos realizados por el autor sobre la indisponibilidad de equipos auxiliares de turbina, en unacentral Termoeléctrica de 125 Mw, de procedencia checa, se detectó que uno de los equipos quemayor incidencia tenía en salidas de líneas, en los últimos años, ha sido el conjunto de alimentar. Elmismo está compuesto por una bomba principal de múltiples etapas, un variador de velocidad (deacoplamiento hidráulico, un motor, un reductor de velocidades y una bomba auxiliar o bombabúster. [1]. Excesivos valores de vibraciones caracterizaron durante un período de tiempo, laexplotación del conjunto de alimentar, hasta que el estudio y análisis de las representacionesespectrales y temporales de las mediciones de vibraciones tomadas en los apoyos del equipo,permitieron identificar que los defectos que las provocaban provenían de desalineamiento en losárboles del conjunto, manifestándose principalmente en valores de amplitudes altos del segundoarmónico.Luego de un estudio se llegó a la conclusión de que la desalineación era debido al incorrectoproceso de alineación en frío, ya que, hasta la fecha no se tenían en cuenta las dilataciones quesufrían los equipos en condiciones normales de trabajo, esta corrección se describe de forma brevey concisa en el siguiente trabajo, determinado los valores a los cuales se debe alinear este equipo.Palabras claves: desalineación, vibraciones, bomba de múltiples etapas, central termoeléctrica.________________________________________________________________________AbstractIn works done by the author about needs in auxiliary turbine equipment, in an electric powerstation of 125 Mw (Czechoslovak made, it was detected that one of the greatest incidence over theunit line output in these last years was given by the group of feeding water to de boilers. This groupconsisted of the following pieces of equipment: a principal pump, a velocity changer (hydrauliccoupled, a motor, a velocity reducer, and an

  10. Spectroastrometry of rotating gas disks for the detection of supermassive black holes in galactic nuclei. II. Application to the galaxy Centaurus A (NGC 5128)

    Gnerucci, A.; Marconi, A.; Capetti, A.; Axon, D. J.; Robinson, A.; Neumayer, N.


    We measure the black hole mass in the nearby active galaxy Centaurus A (NGC 5128) using a new method based on spectroastrometry of a rotating gas disk. The spectroastrometric approach consists in measuring the photocenter position of emission lines for different velocity channels. In a previous paper we focused on the basic methodology and the advantages of the spectroastrometric approach with a detailed set of simulations demonstrating the possibilities for black hole mass measurements going below the conventional spatial resolution. In this paper we apply the spectroastrometric method to multiple longslit and integral field near infrared spectroscopic observations of Centaurus A. We find that the application of the spectroastrometric method provides results perfectly consistent with the more complex classical method based on rotation curves: the measured BH mass is nearly independent of the observational setup and spatial resolution and the spectroastrometric method allows the gas dynamics to be probed down to spatial scales of ~0.02″, i.e. 1/10 of the spatial resolution and ~1/50 of BH sphere of influence radius. The best estimate for the BH mass based on kinematics of the ionised gas is then log (MBH sin i2/M⊙) ≃ 7.5 ± 0.1 which corresponds to MBH= 9.6-1.8+2.5 × 107 M⊙ for an assumed disk inclination of i = 35°. The complementarity of this method with the classic rotation curve method will allow us to put constraints on the disk inclination which cannot be otherwise derived from spectroastrometry. With the application to Centaurus A, we have shown that spectroastrometry opens up the possibility of probing spatial scales smaller than the spatial resolution, extending the measured MBH range to new domains which are currently not accessible: smaller BHs in the local universe and similar BHs in more distant galaxies.

  11. Advances in Rotational Seismic Measurements

    Pierson, Robert [Applied Technology Associates, Albuquerque, NM (United States); Laughlin, Darren [Applied Technology Associates, Albuquerque, NM (United States); Brune, Robert [Applied Technology Associates, Albuquerque, NM (United States)


    Rotational motion is increasingly understood to be a significant part of seismic wave motion. Rotations can be important in earthquake strong motion and in Induced Seismicity Monitoring. Rotational seismic data can also enable shear selectivity and improve wavefield sampling for vertical geophones in 3D surveys, among other applications. However, sensor technology has been a limiting factor to date. The US Department of Energy (DOE) and Applied Technology Associates (ATA) are funding a multi-year project that is now entering Phase 2 to develop and deploy a new generation of rotational sensors for validation of rotational seismic applications. Initial focus is on induced seismicity monitoring, particularly for Enhanced Geothermal Systems (EGS) with fracturing. The sensors employ Magnetohydrodynamic (MHD) principles with broadband response, improved noise floors, robustness, and repeatability. This paper presents a summary of Phase 1 results and Phase 2 status.

  12. Comment on ‘The motion of an arbitrarily rotating spherical projectile and its application to ball games’

    Højgaard Jensen, Jens


    In a recent paper (Robinson G and Robinson I 2013 Phys. Scr. 88 018101) the authors developed the differential equations which govern the motion of a spherical projectile rotating about an arbitrary axis in the presence of an arbitrary wind, assuming that both the drag force and the lift force are independent of the Reynolds number and proportional to the square of the projectile’s velocity. In this paper, by dimensional analysis, the latter assumption is shown to be incorrect for forces dependent on the angular velocity of the projectile, e.g. the lift force.

  13. Rapidly rotating red giants

    Gehan, Charlotte; Michel, Eric


    Stellar oscillations give seismic information on the internal properties of stars. Red giants are targets of interest since they present mixed modes, which behave as pressure modes in the convective envelope and as gravity modes in the radiative core. Mixed modes thus directly probe red giant cores, and allow in particular the study of their mean core rotation. The high-quality data obtained by CoRoT and Kepler satellites represent an unprecedented perspective to obtain thousands of measurements of red giant core rotation, in order to improve our understanding of stellar physics in deep stellar interiors. We developed an automated method to obtain such core rotation measurements and validated it for stars on the red giant branch. In this work, we particularly focus on the specific application of this method to red giants having a rapid core rotation. They show complex spectra where it is tricky to disentangle rotational splittings from mixed-mode period spacings. We demonstrate that the method based on the id...

  14. Effects of long term rice straw application on the microbial communities of rapeseed rhizosphere in a paddy-upland rotation system.

    Peng, Caijuan; Lai, Songsong; Luo, Xuesong; Lu, Jianwei; Huang, Qiaoyun; Chen, Wenli


    The influence of the rice straw application on rhizosphere microbial communities in the long-term rotation system remains unclear. Two experimental sites (Jingzhou and Wuxue) with the same straw fertilization have been cultivated under the rapeseed-rice rotation mode for 7years. Eco-plate data indicated that the microbial metabolic potential at both sites was enhanced in the cores applied with rice straw. Rhizosphere microbial communities at the two fields could be well distinguished by phospholipid fatty acid data. Redundancy analysis showed that the rapeseed rhizosphere microbial communities in Jingzhou were influenced by soil moisture content, available potassium and available nitrogen, whereas those in Wuxue were influenced by soil available phosphorous, available potassium, total soil carbon and available nitrogen. Variation in soil enzyme activities could be mainly explained by available potassium in Jingzhou, and it was significantly affected by total soil carbon, available nitrogen, available potassium, available phosphorous, total soil nitrogen, moisture content and total phosphorous in Wuxue. The two rapeseed rhizosphere microbial communities are differently affected by the rice-straw application. Rhizosphere with more fungi was passively influenced by the rice-straw, while that with more Gram-negative bacteria was actively in response to the treatment.

  15. 红外热像仪船用数据采集方法应用%Applications on method of ship equipments temperature data gathering by infrared thermography

    孙朝斌; 石明华; 马卫民; 郭海生


    基于红外热像仪数据采集方法和国内外仪器设备无损检测方法应用研究,以热像仪船舶应用为案例,提出了集热像图采集、处理、存贮和利用的热像图图文信息采集管理方案.该方案规范了热像图的采集、处理过程,使热像图真正起到在船用设备隐患预警中的指导作用.%In this paper, based on studies of temperature data gathering with infrared therniography and applications in non-loss equipments testing method, illustrating with some successful cases about its usages for ship electronic facilities, gives a useful method or plan of temperature data gathering, processing, management, as well as data storage with the infrared thermography. As this plan would standardize the process of data gathering and management, it could make best use of infrared thermography maps and gives some necessary indicates in advance in testing of shipfittings.

  16. A unified normal mode approach to dynamic tides and its application to rotating Sun-like stars

    Ivanov, P B; Chernov, S V


    We determine the response of a uniformly rotating star to tidal perturbations due to a companion. General periodic orbits and parabolic flybys are considered. We evaluate energy and angular momentum exchange rates as a sum of contributions from normal modes allowing for dissipative processes. We consider the case when the response is dominated by the contribution of an identifiable regular spectrum of low frequency modes, such as gravity modes and evaluate it in the limit of very weak dissipation. Our formalism may be applied both to Sun-like stars with radiative cores and convective envelopes and to more massive stars with convective cores and radiative envelopes. We provide general expressions for transfer of energy and angular momentum valid for an orbit with any eccentricity. Detailed calculations are made for Sun-like stars in the slow rotation regime where centrifugal distortion is neglected in the equilibrium and the traditional approximation is made for the normal modes. We use both a WKBJ procedure a...

  17. Spectroscopic analysis of asymmetric top free radicals --Application to pure rotational spectra of NO2 in the ground vibronic state

    LIU; Yuyan


    [1]Sears, T. J., The calculation of the energy levels of an asymmetric top free radical in a magnetic field, Comput. Phys. Rep., 1984, 2: 1..[2]Davies, P. B., Liu, Y., Liu, Z., Far infrared LMR spectra of monobromomethyl radicals, Chem. Phys. Lett., 1993, 214: 305.[3]Nolte, J., Wagner, H. G., Sears, T. J. et al., The far-infrared laser magnetic resonance spectrum of CH2F, J. Mol. Spec-trosc., 1999, 195: 43.[4]Sears, T. J., ASYTOP--A program for detailed analysis of gas phase magnetic resonance spectra of asymmetric top molecules, Comput. Phys. Commun., 1984, 34: 123.[5]Papousek, D., Aliev, M. R., Molecular Vibrational Rotational Spectra, Prague: Academia, 1982, 72.[6]Matsushima, F., Nagase, H., Nakauchi, T. et al., Frequency measurement of pure rotational transitions of H2O, J. Mol. Spectrosc., 1999, 193: 217.[7]Bowater, I. C., Brown, J. M., Carrington, A., Microwave spectroscopy of nonlinear free radicals, Proc. R. Soc. Lond. A, 1973, 333: 265.[8]Castellano, S., Bothner-by, A. A., Analysis of NMR spectra by least squares, J. Chem. Phys., 1964, 41: 3863.[9]Bird, G. R., Microwave spectrum of NO2, J. Chem. Phys., 1956, 25: 1040.[10]Bird, G. R., Baird, J. C., Jache, A. W. et al., Microwave spectrum of NO2: fine structure and magnetic coupling, J. Chem. Phys., 1964, 40: 3378.[11]Lees, R. M., Curl, R. F., Baker, J. G., Millimeter-wavelength microwave spectrum of nitrogen dioxide, J. Chem. Phys., 1966, 45: 2037.[12]Baron, P. A., Godfrey, P. D., Harris, D. O., Microwave spectrum of NO2 at 70 GHz, J. Chem. Phys., 1974, 60: 3723.[13]Bowman, W. C., De Lucia, F. C., The millimeter and submillimeter spectrum of NO2, J. Chem. Phys., 1982, 77: 92.[14]Semmoud-Monnanteuil, N., Colmont, J. M., Perrin, A. et al., New measurements in the millimeter-wave spectrum of NO2, J. Mol. Spectrosc., 1989, 134: 176.[15]Baskakov, O. I., Moskienko, M. V., Dyubko, S. F., Submillimeter rotational spectrum of nitrogen dioxide, Opt

  18. Application of powder recovery equipment in Maanshan artificial aggregate processing system%石粉回收设备在马鞍山人工砂石加工系统中的应用

    毕荣君; 沈国毓


    以重庆马鞍山人工砂石加工系统为例,分析石粉回收设备在人工砂石加工系统中的应用。经过近4a的生产运行,证明该设备回收效果较好。%Taking Chongqing Maanshan artificial aggregate processing system as the example, we analyzed the application of power recovery equipment used in the artificial processing system. It shows that the recovery equipment effect is good after nearly four years of operation.

  19. 电力设备传统检修的弊端与状态检修方式的应用%The Defects of the Traditional Maintenance of Electric Power Equipment and the Application of the Condition Based Maintenance



    In this paper, the concept of power equipment fault is described, the shortcomings of the traditional maintenance method, and the power equipment condition based maintenance mode of the application and state maintenance way of thinking.%本文对电力设备故障概念进行了阐述,分析了传统检修方法的弊端,探讨了电力设备状态检修方式的应用和状态检修的思维方式.

  20. Common NICU Equipment

    ... newborn intensive care unit (NICU) > Common NICU equipment Common NICU equipment E-mail to a friend Please ... Baby Caring for your baby Feeding your baby Common illnesses Family health & safety Complications & Loss Pregnancy complications ...

  1. 介入放射线诊疗设备应用及不良事件检测%Interventional radiological equipment application and adverse event detection

    芦静; 尹今扬; 胡良运


    目的:介绍介入放射学的设备、材料及其在临床中的应用,更好地掌握介入放射治疗的方法,减少介入放射治疗在临床应用中不良事件的发生。方法:介绍各种影像设备DSA、CT、MRI等的性能及使用方法以及介入放射线设备防护知识,分析产生介入治疗不良事件的原因,给出避免介入治疗不良事件的方案。结果:介入放射医生在介入放射线诊疗中增强了放射线设备防护意识,减少了不良事件的发生。结论:介入放射治疗应用中存在不良事件发生的潜在因素,会损害医生与患者的身体健康以及导致临床诊断事故,为此应做好防犯工作,使介入放射治疗工作得以顺利开展。%Objective:Application of interventional radiology equipment, through the introduction and materials in clinic,to better grasp the method of interventional radiotherapy and interventional radiology treatment,reduce adverse events in clinical application. Methods: Various imaging devices such as DSA, CT, MRI etc, imaging within the body structure, the size of the lesion and its relationship with the surrounding tissue by these devices can be very good;and the development of medical devices that need not operation, can accurately reach the lesion site for treatment. Results:At present, the interventional radiology doctors has to catheters or devices"interventional"vascular branches, the digestive tract and other specific parts, used in the treatment of disease. Conclusion:Interventional radiology is an emerging treatment method as the development of modern science and technology. Interventional also has some adverse events radiotherapy applications, will damage the doctor and the patient's health and the impact of clinical diagnosis and other accidents, so do the crime prevention work is very important, so as to carry out the interventional radiology treatment.

  2. Theoretical volume profiles for conformational changes: Application to internal rotation of benzene ring in 1,12-dimethoxy-[12]-paracyclophane.

    Wiebe, Heather; Louwerse, Miranda; Weinberg, Noham


    Identification of the transition state is an important step in the study of reaction kinetics and mechanisms. However, for non-rigid chemical systems where multiple viable reaction pathways may exist, enumeration of all possible transition states quickly becomes computationally expensive, if at all feasible. As an alternative approach, we recently proposed a methodology where the volumetric properties of a flexible reaction system are used to locate its transition state ensemble through a comparison of its theoretically determined volume profile and experimental activation volumes derived from high pressure kinetic data. In this work, we apply this method to internal rotation of the benzene ring in 1,12-dimethoxy-[12]-paracyclophane. For this system, the transition state ensemble was found to be the state with the lowest volume, where the benzene ring and the flexible methylene tether are coplanar. This result was verified by comparison with a Gibbs free energy profile obtained via umbrella sampling.

  3. Fate of heavy metals after application of sewage sludge and wood-ash mixtures to short-rotation willow coppice.

    Dimitriou, I; Eriksson, J; Adler, A; Aronsson, P; Verwijst, T


    Short-rotation willow coppice (SRWC), grown on farmland in Sweden for energy-biomass production, was fertilised with sewage sludge and wood-ash mixtures on the basis of the permitted annual phosphorus supply. Two identical experiments were conducted in central Sweden, on two newly harvested commercial SRWC fields. The maximum legally permitted amount of the sludge-ash mixture, sludge only, ash only, and twice the maximum permitted sludge-ash amount, were applied. The aim was to assess the effect of pH changes following treatment, on the ability of SRWC to take up large amounts of Cd and other metals. The remediation effect of SRWC was also studied. Under the experimental conditions applied, uptake by SRWC was unaffected by pH changes. The differences between the amounts of metals experimentally applied, less the uptake by SRWC after a potential harvest, were broadly within the permitted limits. For Cd, a reduction of total amounts in soil was observed.

  4. Spectroscopic analysis of asymmetric top free radicals --Application to pure rotational spectra of NO2 in the ground vibronic state


    Several key problems involved in the analyses of spectra ofasymmetric top molecules, i.e., the effective Hamiltonian, the representation and basis vector, identification of energy levels, the selection rules, the relative intensity, and Zeeman tuning rate, were elucidated systematically. Introducing the high-order centrifugal distortion terms into the effective Hamiltonian, the precision for calculation has been improved substantially, which allows us to analyze the high-lying rotational transitions. A global analysis of all available spectra of 14N16O2 in the ground vibronic state has been made to obtain a set of molecular constants of 14N16O2 in the ground vibronic state which is the most precise and extensive so far. Using the improved parameters, some FIR LMR lines left unassigned hitherto have been identified successfully.

  5. Incidence of Peroneal Tendinopathy After Application of a Posterior Antiglide Plate for Repair of Supination External Rotation Lateral Malleolar Fractures.

    Ahn, Jungtae; Kim, Sehun; Lee, Jung-Soo; Woo, Kyungjei; Sung, Ki-Sun


    Posterior antiglide plating is widely used to treat lateral malleolar fractures caused by supination-external rotation injuries. Despite its widespread use, this technique can be associated with postoperative peroneal tendinopathy. The purpose of the present observational review was to report the incidence of peroneal tendinopathy after the use of posterior antiglide plating to treat lateral malleolar fractures caused by a supination-external rotation injury. A total of 70 patients were followed up for a minimum of 12 (mean 55, range 12 to 109) months. Bony union was obtained in all cases after a mean of 57 (range 37 to 81) days. The median number of screw holes in the plate was 4.9 (range 4 to 7), and the median number of screws used to fixate the fibula was 6.58 (range 5 to 10). The mean American Orthopaedic Foot and Ankle Society hindfoot-ankle score at the final follow-up examination was 90.8 (range 55 to 100). Clinically, 3 (4.29%) of the 70 patients had lateral or posterolateral ankle pain indicative of peroneal tendinopathy after the index surgery, without any objective evidence. Of the 70 patients, 41 (58.57%) underwent surgical removal of the fibular hardware, 2 (4.87%) because of lateral ankle discomfort. At removal, inspection of the peroneal tendon sheath and/or tendons showed no gross evidence of tendinopathy in any of the patients. We concluded that the incidence of clinically evident peroneal tendon symptoms associated with posterior antiglide plating is low (4.3%), and direct operative inspection revealed no gross evidence of tendinopathy. Copyright © 2016 American College of Foot and Ankle Surgeons. Published by Elsevier Inc. All rights reserved.

  6. Spectral Characteristics of CN Radical(B→X)and Its Application in Determination of Rotational and Vibrational Temperatures of Plasma

    PENG Zhi-Min; DING Yan-Jun; ZHAI Xiao-Doug; YANG Qian-Suo; JIANG Zong-Lin


    The aim is to resolve the difficulties of measurement of temperature at several thousands of Celsius degrees for some unstable non-equilibrium gas flows. Based on the molecular spectroscopy theory and inherent molecular structure characteristics of the CN radical, the dependence of the spectral profile on the rotational temperature (RT), vibrational temperature (VT) and optical apparatus function are numerically explored within some certain ranges. Meanwhile, by comparing the numerically calculated spectra with the experimental spectra of the CN radical, the corresponding RT and VT of the plasma induced by the interaction of the laser pulse from an oscillated Nd: YAG laser with the coal target are determined, respectively. In addition, a short discussion on the thermodynamic state and the energy transfer process of the CN radical is also given.%@@ The aim is to resolve the difficulties of measurement of temperature at several thousands of Celsius degrees for some unstable non-equilibrium gas flows.Based on the molecular spectroscopy theory and inherent molecular structure characteristics of the CN radical, the dependence of the spectral profile on the rotational temperature (RT), vibrational temperature(VT)and optical apparatus function are numerically explored within some certain ranges.Meanwhile, by comparing the numerically calculated spectra with the experimental spectra of the CN radical, the corresponding RT and VT of the plasma induced by the interaction of the laser pulse from an oscillated Nd:YAG laser with the coal target are determined, respectively.In addition, a short discussion on the thermodynamic state and the energy transfer process of the CN radical is also given.

  7. Bearing fault diagnosis under variable rotational speed via the joint application of windowed fractal dimension transform and generalized demodulation: A method free from prefiltering and resampling

    Shi, Juanjuan; Liang, Ming; Guan, Yunpeng


    The conventional way for bearing fault diagnosis under variable rotational speed generally includes prefiltering, resampling based on shaft rotating frequency and order spectrum analysis. However, its application is confined by three major obstacles: a) knowledge-demanding parameter determination required by prefiltering, b) unavailable shaft rotating frequency for resampling as it is coupled with instantaneous fault characteristic frequency (IFCF) by a fault characteristic coefficient (FCC) which cannot be decided without knowing what fault actually exists, and c) complicated and error-prone resampling process. As such, we propose a new method to address these problems. The proposed method free from prefiltering and resampling mainly contains the following steps: a) extracting envelope by windowed fractal dimension (FD) transform, requiring no prefiltering, b) with the envelope signal, performing short time Fourier transform (STFT) to get a clear time frequency representation (TFR), from which the IFCF and the basic demodulator for generalized demodulation (GD) can be obtained, c) applying the generalized demodulation to the envelope signal with the current demodulator, converting the trajectory of the current time-frequency component into a linear path parallel to the time axis, d) frequency analyzing the demodulated signal, followed by searching the amplitude of the constant frequency where the linear path is situated. Updating demodulator via multiplying the basic demodulator by different real numbers (i.e., coefficient λ) and repeating the steps (c)-(d), the resampling-free order spectrum is then obtained. Based on the resulting spectrum, the final diagnosis decision can be made. The proposed method for its implementation on the example of simulated data is presented. Finally, experimental data are employed to validate the effectiveness of the proposed technique.

  8. 基于RFID的电力通信设备管理系统的设计与应用%Design and Application of Management System of Power Communication Equipment Based on RFID Technology

    王阳; 张正文


      针对目前电力通信设备仓库管理中存在的问题,设计应用基于RFID的B/S模式通信设备管理系统,实现对电力通信设备的动态管理,节约人力和物资成本,提高精益集约化管理水平。%Power communications equipment for the current problems in warehouse management was discussed. Designing RFID-based applications B/S mode communication device management system, automatically collect information communication equipment, to achieve the dynamic management of power communication equipment, saving manpower and material costs, increase lean intensive management level.

  9. 无损检测技术在煤矿机械设备安全检测中的应用%Application of non-destructive testing to safety inspection of mechanical equipments in collieries



    分析了无损检测技术在煤矿机械关键零部件的安全检测中的研究和应用现状,归纳了不同机械的关键零部件适合采用的无损检测技术,探讨了在煤矿机械中推广无损检测技术时应关注的问题。%The paper analyzed the current study and application status of non-destructive testing to the safety inspection of key parts of mechanical equipments in collieries, and concluded the non-destructive testing techniques suitable for key parts of different equipments. It also discussed the matters should be pay attention to during the spread of non-destructive testing in safety inspection of mechanical equipments in collieries.

  10. Research on the Framework and Application of Equipment Material Support Internet of Things%装备器材保障物联网构架及应用研究

    牛星星; 王铁宁; 刘大伟


    The technology of the internet of things is another new information tide following the technology of internet. It plays a role in promoting to the equipment supportability. The equipment material support internet of things (EMS-IOT) is the internet of things application on the equipment material support, the author comprehends the concept of equipment material support internet of things through analyzing, sets up the theory model and researches technology of internet of things in the application of concrete business specifically, thus excavates enormous potentiality and research focal point that the equipment material support internet of things, analyzes pros and cons, and plays certain suggestion function to the development of equipment material support internet of things.%物联网技术是继互联网技术之后又一次新的信息浪潮。正确合理将物联网技术运用到装备器材保障领域,将对我军的装备器材保障能力起到快速提升作用。装备器材保障物联网就是将物联网技术在装备器材保障里的综合应用,作者通过分析理解装备保障物联网的概念,针对具体保障业务建立理论模型以及研究物联网技术在具体业务应用,从而挖掘物联网在装备保障当中的巨大潜力以及研究重点,并分析利弊,为我军发展装备器材保障物联网起了一定的建言作用。

  11. 无线心电监护设备在医院的应用%Application of Wireless ECG Monitoring Equipment in Hospital



    目的:目前医院患者日益增多,为了减少了医护人员的工作负担,提高医护人员工作效率和服务质量,设计了一种基于无线传感网络的心电监护设备。方法采用Zigbee、嵌入式C语言和visual studio等技术进行硬件和软件开发。结果通过测试表明,无线心电监护系统具有传输距离远、消耗功率低的特点。结论无线心电监护系统为医院的推广应用提供了基础,同时指出了该系统有待解决的问题,以及进一步研究的方向。%Objective At present, the number of patients is increasing. In order to reduce the burden for health care workers and improve work ef iciency and quality of health care services, an ECG monitoring equipment was designed based on wireless sensor networks. Methods Zigbee was used for hardware development. Software was developed using embedded C language and visual studio. Results The test showed that the wireless ECG monitoring system had the characteristics of long transmission distance and low power consumption. Conclusion Wireless ECG monitoring system provided the basis for the hospital's application. Also the problem which the system needs to be solved and the direction for further research was pointed out.

  12. Equipment energy efficiency energy-saving control technology and application%设备能效控制节能技术及实践应用



    Saving energy and reducing consumption, building a resource-saving and environment-friendly society have an important role, and it can also promote the development of enterprises, improve the economic efficiency of enterprises. We took the benefits of six Sigma as the guiding ideology, from “value” perspective, examined equipment energy consumption. Through innovative thinking, we reviewed the “waste heat recovery and utilization”,“centralized energy supply”,“eliminate transition waste”,“eliminate the design margin”,“excellent process energy saving”,“frequency conversion control application of”,“new technology”as the 7 major technical methods of energy saving energy, we realized saving goals, played a good role in promotion.%  节能降耗,对建设资源节约型和环境友好型社会具有重要的推动作用,同时也是促进企业发展、提高企业经济效益的有效措施。我公司以精益六西格玛为指导思想,从“价值”角度,审视设备能耗点,通过创新思维,梳理总结了“余热回收利用”、“中央集中供能”、“消除过渡浪费”、“消除设计余量”、“优化工艺节能”、“变频控制应用”、“新技术引进”等7大技术节能方法,为节能降耗目标的实现,起到了良好的推动作用。

  13. 一种压差式油水界面仪的设计与应用%Design and Application of Pressure Differential Oil-Water Interface Equipment

    王永亮; 邱宏安; 尚娟


    This paper develops a new oil-water interface equipment based on the microchip MSC1210 and pressure differential transmitter. The pressure transmitter with high-precision was used for pressure measurement, and, it applies high precision A/D converter to data collection. To measure and display the height of the oil-water separate interface, relevant software is used to modify parameters. The whole process can indicate and control the discharge time. The application shows that this system runs stably and accurately under industry field environment. The system is practical and worthy of using abroad.%针对目前国内某些油田中油水分离的检测技术仍较为落后的现状,提出一种采用MSC1210单片机为核心的油水界面仪的设计;系统使用高精度的压力变送器进行压力侧量,通过MSC1210的高精度A/D转换器对数据进行采集,使用软件对现场参数进行修正,完成油田开采中对油水界面高度的侧量和显示,指示或控制排放废水或排放油品的时间;应用结果表明,该检测系统在工业现场环境下运行稳定,检测精度高,具有一定的实用和推广价值.

  14. Mine substation electrical equipment virtual reality application platform development and Application%矿井采区变电所常用电气设备虚拟现实应用平台的开发及应用



    采区变电所是煤矿井下的区域供电中枢,担负着变电、配电、保护等多重任务,在矿井供电系统和安全生产中具有极为重要的作用。采区变电所设备集中,且新型设备应用越来越多,如何让员工尽快认识和掌握这些设备,提高培训效果和效率,成为迫切需要解决的课题。鉴于此,笔者针对采区变电所主要电气设备创建了相应的三维模型,并运用虚拟现实技术进一步提升应用水平,提高培训效果,实现三维自主交互式培训,同时开发了相应的程序,实现了系统集成,形成了一整套操作方便、生动形象、自主交互的解决方案,针对性、实用性强,适应了煤矿生产的需要,取得了很好的效果。%mining area substation of coal mine underground power supply is regional central, bears a substation, distribution, protection, multitasking, and safety production in mine power supply system has a very important role. Mining area substation equipment centralized, and the new equipment is applied more and more, how to make the staff as soon as possible to know and master these equipment, improve the training effect and efficiency, it is urgent to solve. In view of this, the author aimed at mining area substation electrical equipment to create a corresponding three-dimensional model, and the use of virtual reality technology to further enhance the application level, enhance the training effect, to achieve three-dimensional interactive training, while the development of the corresponding procedures, realize the system integration, formed a complete set of convenient operation, vivid image, independent interaction solution, pertinence, practicability, adapted to the needs of mining production, and achieved very good results.

  15. Performance of spring barley varieties and variety mixtures as affected by manure application and their order in an organic crop rotation

    Askegaard, Margrethe; Thomsen, Ingrid Kaag; Berntsen, Jørgen


    In order to obtain a high and stable yield of organic spring barley, production should be optimized according to the specific environment. To test the performance of spring barley varieties under varying cropping conditions, a field experiment was carried out in 2003 and 2004 in a six-field mixed...... organic crop rotation. We investigated the choice of variety, the order in a rotation, and the application of manure (slurry and farmyard manure; 0 to 120 total-N ha−1) on grain yields of six selected varieties with different characteristics grown in either pure stands or in two spring barley mixtures......, each consisting of three varieties. Average grain yield of the barley varieties varied between 3.3 t DM ha−1 and 4.1 t DM ha−1. Grain yields of the two mixtures were 4.0 and 3.6 t DM ha−1, respectively. The varieties/mixtures interacted with crop order and year. Foliar diseases were more severe...

  16. Application of the rotating cylinder electrode in molten LiCl-KCl eutectic containing uranium(III)- and magnesium(II)-chloride

    Rappleye, Devin; Simpson, Michael F.


    The application of the rotating cylinder electrode (RCE) to molten LiCl-KCl eutectic mixtures for electroanalytical measurements is presented. This enabled the measurement of the limiting current which was observed to follow a linear trend with the rotational rate raised to 0.64-0.65 power on average, which closely agrees with existing RCE mass-transfer correlations. This is the first publication of electroanalytical RCE measurements in LiCl-KCl eutectic based molten salt mixtures, to our knowledge. These measurements were made in mixtures of molten LiCl-KCl eutectic containing UCl3 and MgCl2. Kinetic parameters were calculated for Mg2+ in LiCl-KCl eutectic. The exchange current density (io) of Mg2+ deposition varied with mole fraction (x) according to io(A cm-2) = 1.64x0.689. The parameters from RCE measurements were also applied in an electrochemical co-deposition model entitled DREP to detect and predict the deposition rate of U and Mg. DREP succeeded in detecting the co-deposition of U and Mg, even when Mg constituted less than 0.5 wt% of the deposit.


    The overall objective of the Environmental Testing and Verification Coatings and Coating Equipment Program is to verify pollution prevention and performance characteristics of coating technologies and make the results of the testing available to prospective coating technology use...

  18. [Metrological software of laser medical equipment].

    Romashkov, A P; Glazov, A I; Tikhomirov, S V


    The paper considers the laser medical equipment situation that has established in Russia and that is characterized by the wide medical application of laser technologies and appropriate software and by inadequate development and imperfection of required metrological software and maintenance of laser equipment.

  19. Bidirectional optical rotation of cells

    Jiyi Wu


    Full Text Available Precise and controlled rotation manipulation of cells is extremely important in biological applications and biomedical studies. Particularly, bidirectional rotation manipulation of a single or multiple cells is a challenge for cell tomography and analysis. In this paper, we report an optical method that is capable of bidirectional rotation manipulation of a single or multiple cells. By launching a laser beam at 980 nm into dual-beam tapered fibers, a single or multiple cells in solutions can be trapped and rotated bidirectionally under the action of optical forces. Moreover, the rotational behavior can be controlled by altering the relative distance between the two fibers and the input optical power. Experimental results were interpreted by numerical simulations.

  20. Bidirectional optical rotation of cells

    Wu, Jiyi; Zhang, Weina; Li, Juan


    Precise and controlled rotation manipulation of cells is extremely important in biological applications and biomedical studies. Particularly, bidirectional rotation manipulation of a single or multiple cells is a challenge for cell tomography and analysis. In this paper, we report an optical method that is capable of bidirectional rotation manipulation of a single or multiple cells. By launching a laser beam at 980 nm into dual-beam tapered fibers, a single or multiple cells in solutions can be trapped and rotated bidirectionally under the action of optical forces. Moreover, the rotational behavior can be controlled by altering the relative distance between the two fibers and the input optical power. Experimental results were interpreted by numerical simulations.

  1. Optomechanics for absolute rotation detection

    Davuluri, Sankar


    In this article, we present an application of optomechanical cavity for the absolute rotation detection. The optomechanical cavity is arranged in a Michelson interferometer in such a way that the classical centrifugal force due to rotation changes the length of the optomechanical cavity. The change in the cavity length induces a shift in the frequency of the cavity mode. The phase shift corresponding to the frequency shift in the cavity mode is measured at the interferometer output to estimate the angular velocity of absolute rotation. We derived an analytic expression to estimate the minimum detectable rotation rate in our scheme for a given optomechanical cavity. Temperature dependence of the rotation detection sensitivity is studied.

  2. Modeling rigid magnetically rotated microswimmers: rotation axes, bistability, and controllability.

    Meshkati, Farshad; Fu, Henry Chien


    Magnetically actuated microswimmers have recently attracted attention due to many possible biomedical applications. In this study we investigate the dynamics of rigid magnetically rotated microswimmers with permanent magnetic dipoles. Our approach uses a boundary element method to calculate a mobility matrix, accurate for arbitrary geometries, which is then used to identify the steady periodically rotating orbits in a co-rotating body-fixed frame. We evaluate the stability of each of these orbits. We map the magnetoviscous behavior as a function of dimensionless Mason number and as a function of the angle that the magnetic field makes with its rotation axis. We describe the wobbling motion of these swimmers by investigating how the rotation axis changes as a function of experimental parameters. We show that for a given magnetic field strength and rotation frequency, swimmers can have more than one stable periodic orbit with different rotation axes. Finally, we demonstrate that one can improve the controllability of these types of microswimmers by adjusting the relative angle between the magnetic field and its axis of rotation.

  3. Application of the 3D Printing Technology in the Maintenance of Medical Equipment%三维打印技术在医疗器械维修中的应用

    徐路钊; 张华伟; 吴书铭; 刘成友; 蒋红兵


    The application of the three-dimensional printing technology in the medical ifeld has become widely used. The technology can be used in the production of customer-specified surgical models, implants, prosthesesand customized surgical equipment for a particular surgery. Yet the application of three-dimensional printing technology in the maintenance of the medical equipment is not common. In the daily maintenance of equipment, the deifciency and the high price of the spare parts has brought much inconvenience to the maintenance work. By analyzing the different cases in routine equipment maintenance, this paper used different modeling methods to conduct three-dimensional reduction of the existing or missing parts. The paper also compared the three-dimensional molded parts with the original parts and veriifed the effectiveness of the application in the medical equipment maintenance.%三维打印技术在医疗领域的应用范围越来越广泛,能够定制特定手术模型、植入物、假肢和个性化手术设备等,但三维打印技术在医疗设备维修中的应用却较少。在日常的设备维修保养中,设备零配件的缺失和高昂的价格给维修工作带来了诸多不便。本文结合日常维修实例,对已有或缺失的零配件使用不同的建模方法进行三维还原,比较了三维成型件与原零配件的特性,并通过实验验证了三维打印技术在医疗设备维修中的应用价值。

  4. Inelastic Scattering of Identical Molecules within Framework of the Mixed Quantum/Classical Theory: Application to Rotational Excitations in H2 + H2.

    Semenov, Alexander; Babikov, Dmitri


    Theoretical foundation is laid out for description of permutation symmetry in the inelastic scattering processes that involve collisions of two identical molecules, within the framework of the mixed quantum/classical theory (MQCT). In this approach, the rotational (and vibrational) states of two molecules are treated quantum-mechanically, whereas their translational motion (responsible for scattering) is treated classically. This theory is applied to H2 + H2 system, and the state-to-state transition cross sections are compared versus those obtained from the full-quantum calculations and experimental results from the literature. Good agreement is found in all cases. It is also found that results of MQCT, where the Coriolis coupling is included classically, are somewhat closer to exact full-quantum results than results of the other approximate quantum methods, where those coupling terms are neglected. These new developments allow applications of MQCT to a broad variety of molecular systems and processes.

  5. 精益管理在手术室腹腔镜设备管理中的应用%Application of lean management in laparoscopic equipment management in the operating room

    华靖; 李霞; 杨贤云


    Objective To explore the application and effects of lean management in laparoscopic equipment management in operating room. Methods Measures included establishing operation process, implementing 5S management and four levels of quality control. Results The incidences of equipment defects of laparoscopic operation and nurses operating defects were reduced ( P < 0. 01 ), and the satisfaction of operation doctors was improved (P < 0.01). Conclusion Application of lean management can promote standardized management of laparoscopic equipment, increase the serviceability rate of e-quipment, and improve the operation efficiency and safety.%目的 探讨精益管理在手术室腹腔镜设备管理中的应用效果.方法 建立操作流程,实施5S管理,并进行四级质量控制.结果 腹腔镜手术设备缺陷和护士操作缺陷发生率下降(P<0.01),手术医生满意度提高(P<0.01).结论 精益管理促进了手术室腹腔镜设备规范化管理,提高设备完好率,有利于提高手术效率和安全性.

  6. Integrated polymer polarization rotator based on tilted laser ablation

    Poulopoulos, Giannis; Kalavrouziotis, Dimitrios; Missinne, Jeroen; Bosman, Erwin; Van Steenberge, Geert; Apostolopoulos, Dimitrios; Avramopoulos, Hercules


    The ubiquitous need for compact, low-cost and mass production photonic devices, for next generation photonic enabled applications, necessitates the development of integrated components exhibiting functionalities that are, to date, carried out by free space elements or standard fiber equipment. The polarization rotator is a typical example of such tendency, as it is a crucial part of the PBS operation of future transceiver modules that leverage polarization multiplexing schemes for increasing the optical network capacity. Up to now, a variety of integrated polarization rotating concepts has been proposed and reported, relying, mainly, on special waveguide crossection configurations for achieving the rotation. Nevertheless, most of those concepts employ SiPh or III-V integration platforms, significantly increasing the fabrication complexity required for customizing the waveguide crossection, which in turn leads to either prohibitively increased cost or compromised quality and performance. In this manuscript we demonstrate the extensive design of a low-cost integrated polymer polarization rotator employing a right-trapezoidal waveguide interfaced to standard square polymer waveguides. First the crossection of the waveguide is defined by calculating and analyzing the components of the hybrid modes excited in the waveguide structure, using a Finite Difference mode solver. Mode overlaps between the fundamental polymer mode and each hybrid mode reveal the optimum lateral offset between the square polymer and the trapezoidal waveguide that ensures both minimum interface loss and maximized polarization rotation performance. The required trapezoidal waveguide length is obtained through EigenMode Expansion (EME) propagation simulations, while more than 95% maximum theoretical conversion efficiency is reported over the entire C-band, resulting to more than 13dB polarization extinction ratio. The polarization rotator design relies on the development of angled polymer waveguide

  7. Renewal of radiological equipment.


    In this century, medical imaging is at the heart of medical practice. Besides providing fast and accurate diagnosis, advances in radiology equipment offer new and previously non-existing options for treatment guidance with quite low morbidity, resulting in the improvement of health outcomes and quality of life for the patients. Although rapid technological development created new medical imaging modalities and methods, the same progress speed resulted in accelerated technical and functional obsolescence of the same medical imaging equipment, consequently creating a need for renewal. Older equipment has a high risk of failures and breakdowns, which might cause delays in diagnosis and treatment of the patient, and safety problems both for the patient and the medical staff. The European Society of Radiology is promoting the use of up-to-date equipment, especially in the context of the EuroSafe Imaging Campaign, as the use of up-to-date equipment will improve quality and safety in medical imaging. Every healthcare institution or authority should have a plan for medical imaging equipment upgrade or renewal. This plan should look forward a minimum of 5 years, with annual updates. Teaching points • Radiological equipment has a definite life cycle span, resulting in unavoidable breakdown and decrease or loss of image quality which renders equipment useless after a certain time period.• Equipment older than 10 years is no longer state-of-the art equipment and replacement is essential. Operating costs of older equipment will be high when compared with new equipment, and sometimes maintenance will be impossible if no spare parts are available.• Older equipment has a high risk of failure and breakdown, causing delays in diagnosis and treatment of the patient and safety problems both for the patient and the medical staff.• Every healthcare institution or authority should have a plan for medical imaging equipment upgrade or replacement. This plan should look forward a

  8. Investigation of the Unsteady Total Pressure Profile Corresponding to Counter-Rotating Vortices in an Internal Flow Application

    Gordon, Kathryn; Morris, Scott; Jemcov, Aleksandar; Cameron, Joshua


    The interaction of components in a compressible, internal flow often results in unsteady interactions between the wakes and moving blades. A prime example in which this flow feature is of interest is the interaction between the downstream rotor blades in a transonic axial compressor with the wake vortices shed from the upstream inlet guide vane (IGV). Previous work shows that a double row of counter-rotating vortices convects downstream into the rotor passage as a result of the rotor blade bow shock impinging on the IGV. The rotor-relative time-mean total pressure distribution has a region of high total pressure corresponding to the pathline of the vortices. The present work focuses on the relationship between the magnitude of the time-mean rotor-relative total pressure profile and the axial spacing between the IGV and the rotor. A survey of different axial gap sizes is performed in a two-dimensional computational study to obtain the sensitivity of the pressure profile amplitude to IGV-rotor axial spacing.

  9. Reply to Comment on ‘The motion of an arbitrarily rotating spherical projectile and its application to ball games’

    Robinson, Garry; Robinson, Ian


    Jensen (2014 Phys. Scr. 89 067001) presents arguments that the expressions that we have used in our recent paper (Robinson and Robinson 2013 Phys. Scr. 88 018101) for the lift force and possibly the drag force acting on a rotating spherical projectile are dimensionally incorrect and therefore cannot be valid. We acknowledge that the alternative equations suggested by Jensen are dimensionally correct, and may well be borne out by future experimental results. However, we demonstrate that our equations are in fact also dimensionally correct, the key concept being that of having the appropriate dimensions for the multiplying constants, an extensively used practice with experimentally determined laws. After a detailed discussion of the situation, a simple illustrative example of Hooke's law for the restoring force, F, due to a mass attached to a spring displaced by a distance x from its equilibrium position is presented, where the spring constant, k, has such units as to render the equation dimensionally correct. Finally we discuss the implications of some relevant existing experimental results for the lift force.

  10. Proceedings of the 14. international symposium on mine planning and equipment selection (MPES) 2005 and the 5. international conference on computer applications in the minerals industries (CAMI 2005). CD ed.

    Singhal, R.J. [Government of Canada, Ottawa, ON (Canada)]|[Laval Univ., Ste-Foy, PQ (Canada). Dept. of Mining, Metallurgical and Materials Engineering]|[International Journal of Surface Mining, Reclamation and Environment, Calgary, AB (Canada); Fytas, K. [Laval Univ., Ste-Foy, PQ (Canada). Dept. of Mining, Metallurgical and Materials Engineering; Chiwetelu, C. [Government of Canada, Ottawa, ON (Canada)] (eds.)


    This conference provided a forum to discuss leading and emerging technologies in the field of mining, mine planning and computer applications in the minerals industries. Participants from government, industry and academia from more than 15 countries contributed to the proceedings which will be of interest to engineers, scientists, consultants and government personnel responsible for the development and application of innovative technologies in the minerals industries. The conference contributes to the development of high-tech methods and technologies for various segments of the mining and processing industries. The session on coal mining technologies addressed issues associated with process equipment and quality control; open pit mine planning, design, and productivity gains; underground mine planning; drilling, blasting and excavation engineering; mining equipment selection, automation and information technology; mine maintenance and production management; e-maintenance, e-diagnostics, and prognostics; tunneling and other excavation equipment; case histories from coal mining, industrial minerals and metalliferous mining; cost effective methods of mine reclamation, mine closure and waste disposal; advances in mine design, mine optimization and reclamation planning technologies. The session on mine equipment focused on design, selection, and real-time health and performance monitoring; mine and machine automation; and GIS, GPS, telecommunications, artificial intelligence, and Internet application. The final session on rock mechanics and geotechnical applications focused on underground and surface mine stability, groundwater, tailings and waste disposal; computer simulation; real-time mine management systems; and computer applications in mining education. The conference featured 126 presentations of which 18 have been catalogued separately for inclusion in this database. refs., tabs., figs.

  11. [Mechanisms for the increased fertilizer nitrogen use efficiency of rice in wheat-rice rotation system under combined application of inorganic and organic fertilizers].

    Liu, Yi-Ren; Li, Xiang; Yu, Jie; Shen, Qi-Rong; Xu, Yang-Chun


    A pot experiment was conducted to study the effects of combined application of organic and inorganic fertilizers on the nitrogen uptake by rice and the nitrogen supply by soil in a wheat-rice rotation system, and approach the mechanisms for the increased fertilizer nitrogen use efficiency of rice under the combined fertilization from the viewpoint of microbiology. Comparing with applying inorganic fertilizers, combined application of organic and inorganic fertilizers decreased the soil microbial biomass carbon and nitrogen and soil mineral nitrogen contents before tillering stage, but increased them significantly from heading to filling stage. Under the combined fertilization, the dynamics of soil nitrogen supply matched best the dynamics of rice nitrogen uptake and utilization, which promoted the nitrogen accumulation in rice plant and the increase of rice yield and biomass, and increased the fertilizer nitrogen use efficiency of rice significantly. Combined application of inorganic and organic fertilizers also promoted the propagation of soil microbes, and consequently, more mineral nitrogen in soil was immobilized by the microbes at rice early growth stage, and the immobilized nitrogen was gradually released at the mid and late growth stages of rice, being able to better satisfy the nitrogen demand of rice in its various growth and development stages.

  12. Acromiohumeral distance measurement in rotator cuff tendinopathy: is there a reliable, clinically applicable method? A systematic review.

    McCreesh, Karen M; Crotty, James M; Lewis, Jeremy S


    Narrowing of the subacromial space has been noted as a common feature of rotator cuff (RC) tendinopathy. It has been implicated in the development of symptoms and forms the basis for some surgical and rehabilitation approaches. Various radiological methods have been used to measure the subacromial space, which is represented by a two-dimensional measurement of acromiohumeral distance (AHD). A reliable method of measurement could be used to assess the impact of rehabilitation or surgical interventions for RC tendinopathy; however, there are no published reviews assessing the reliability of AHD measurement. The aim of this review was to systematically assess the evidence for the intrarater and inter-rater reliability of radiological methods of measuring AHD, in order to identify the most reliable method for use in RC tendinopathy. An electronic literature search was carried out and studies describing the reliability of any radiological method of measuring AHD in either healthy or RC tendinopathy groups were included. Eighteen studies met the inclusion criteria and were appraised by two reviewers using the Quality Appraisal for reliability Studies checklist. Eight studies were deemed to be of high methodological quality. Study weaknesses included lack of tester blinding, inadequate description of tester experience, lack of inclusion of symptomatic populations, poor reporting of statistical methods and unclear diagnosis. There was strong evidence for the reliability of ultrasound for measuring AHD, with moderate evidence for MRI and CT measures and conflicting evidence for radiographic methods. Overall, there was lack of research in RC tendinopathy populations, with only six studies including participants with shoulder pain. The results support the reliability of ultrasound and CT or MRI for the measurement of AHD; however, more studies in symptomatic populations are required. The reliability of AHD measurement using radiographs has not been supported by the studies

  13. 仪器管理与护士技能培训一体化在急诊护理管理中的应用%The application of unifying equipment management and skill training in emergency nursing management



    Objective To explore the effect of unifying equipment management and skill training in emergency nursing management. Methods The equipment management system was established to manage and maintain equipments systematically. All the 28 nurses were trained on the operational skills and the effect was evaluated by skill competition. Results The performance of theory and skill of 28 nurses were increased significantly ( P < 0.01 ), and the rate of equipment maintenance reduced (P < 0.05 ). Conclusion The application of unifying equipment management and skill training in emergency nursing management can improve nursesoperational skills and reduce the rate of equipment maintenance.%目的 探讨仪器管理与护士技能培训一体化管理在急诊护理管理中的应用与效果.方法 建立仪器管理制度,对全科所有仪器统一管理与维护,对全科28名护士进行仪器使用技能的培训与考核,并进行仪器使用的技能比赛.结果 护士仪器使用的理论与操作技能的考核成绩均提高(P<0.01),仪器维修率降低(P<0.05).结论 仪器管理与技能培训一体化管理有助于提高护士对仪器设备的应用技能,并降低仪器的维修率.

  14. A Security Application of IoT——Design of Information Equipment Intelligent Warehouse%一种物联网的安全应用——信息装备智慧仓库设计



    面对物联网的大势所趋,提出了一种物联网的安全应用:信息装备智慧仓库,为军队、党政或企事业单位的重要信息装备保障提供一种智能化的保障手段。这里以军事信息装备管理为例,从安全信息装备入库管理、出库管理、远程维护支持和安全防护等多个环节阐述了系统功能,并进行了初步设想。以"装备感知,智慧管理"为目标,提供一套全新的安全信息装备保障和管理手段。%Facing the irresistible trend of IoT(the Internet of Things),a security application of IoT is proposed,that is,Information Equipment Intelligence Warehouse. This warehouse provides a kind of intelligent assurance means for the important information equipments of the army,Party and Government,enterprises or business units. With military equipment information management as an example,this paper discusses the system functions,including entering or exiting warehouse management,remote maintenance support and safety protection of the security information and equipments. In order to achieve the goal of "equipment-aware,intelligent management" a new set of assurance and management means for security and information equipments are provided.

  15. Preparation of an application for the control of the dose delivered by equipment of computed tomography (CT); Elaboracion de una aplicacion para el control de la dosis impartida por equipos de tomografia computerizada (TC)

    Torres Cabrera, R.; Agulla Otero, M.; Hernando Gonzalez, I.


    Although TC are native digital equipment, the collection and treatment of the doses given to the patients it continues to present difficulties to date, especially in the still very large number of teams that do not produce a formal report of dose (SR). This work shows the experience gained in the development of an application that allows the calculation, monitoring and control of the dose given to patients by teams of TC. (Author)

  16. Application Prospect of BIM Technology in the Construction of Building Equipment Management System%BIM技术在建筑设备管理系统中的应用前景分析

    潘爱群; 莫世峰


    This article discuss the applications of "Building Information Modeling" (BIM) in the visualization management of equipment and pipeline, energy-saving control of air-conditioning system , BAS integration and so on.%本文对建筑信息模型(BIM)在设备与管道可视化管理、空调系统节能控制、BAS集成等方面的应用进行了探讨。


    J. Steinhoff


    The objective and the scope of this document are to list and briefly describe the major mobile equipment necessary for waste package (WP) retrieval from the proposed subsurface nuclear waste repository at Yucca Mountain. Primary performance characteristics and some specialized design features of the equipment are explained and summarized in the individual subsections of this document. There are no quality assurance requirements or QA controls in this document. Retrieval under normal conditions is accomplished with the same fleet of equipment as is used for emplacement. Descriptions of equipment used for retrieval under normal conditions is found in Emplacement Equipment Descriptions, DI: BCAF00000-01717-5705-00002 (a document in progress). Equipment used for retrieval under abnormal conditions is addressed in this document and consists of the following: (1) Inclined Plane Hauler; (2) Bottom Lift Transporter; (3) Load Haul Dump (LHD) Loader; (4) Heavy Duty Forklift for Emplacement Drifts; (5) Covered Shuttle Car; (6) Multipurpose Vehicle; and (7) Scaler.

  18. Application in the Equipment Manufacturing Industry of Lean Production%浅谈精益生产在装备制造业中的应用

    张晋文; 郭广沁


    The paper summarizes the present situation of equipment manufacturing industry, and analysis of the lean produc-tion theory in the equipment manufacturing industry, in order to provide a the oretical reference and practical guidance on the implementation of lean production for the majority of the equipment manufacturing industry.%文中总结了装备制造业的现状,并以精益生产理论为基础,对该理论在装备制造业中的应用进行详细分析和说明,以期为广大装备制造业推行精益生产提供理论借鉴及实际指导。

  19. Evaluation on Application Effect of Quality Management System in the Medical Equipment Management in Hospitals%质量管理体系在医院医疗设备管理中的应用效果评价



    Objective To analyze the application ef ect of quality management system in medical equipment in hospitals. Methods We had implemented ISO9001:2000quality management system in our hospital since 2002,to control the various elements in the management of medical equipment,to improve the quality system documents,then recorded the management ef ectiveness. Results After the implementation of the quality management system,the management level of medical equipment in our hospital had improved,and achieved a virtuous circle of social management. Conclusion The application of quality management system in the management of medical equipment in hospital can standardize equipment management,and promote the comprehensive development of the hospital.%目的:分析研究质量管理体系在医院医疗设备管理工作中的实际应用效果。方法我院从2002年开始实施ISO9001:2000质量管理体系,对医疗设备管理工作中的各个要素进行控制,完善设备管理质量体系文件,并对管理成效进行记录。结果在实施质量管理体系之后,我院的医疗设备管理水平得到很大程度的提高,实现社会管理工作的良性循环。结论在医院医疗设备管理工作中应用质量管理体系,能够规范设备管理、促进医院全面发展。

  20. 2007 special equipment safety


    @@ The General Administration of Quality Supervision, Inspection and Quarantine of P.R.China (AQSIQ) issued a notice on May 28, 2007,requiring various locations to rectify their procedures for checking special equipment and hoisting machines for hidden problems. To further clarify and implement responsibility in the safety management of special equipment in enterprises, inspection responsibilities and test organizations related to technical assurance are to be established. Further, quality inspection departments will be supervised by law in order to improve special equipment safety.

  1. Rotational application of bioinsecticide with deltamethrin-An antilarval measure for the control of filarial vector, Culex quinquefasciatus (Culicidae: Diptera).

    Gayathri, V; Jeyalakshmi, T; Shanmugasundaram, R; Murthy, P Balakrishna


    A laboratory investigation was undertaken to study the cyclic usage of field recommended doses of Bacillus thuringiensis israelensis (Bti), Bacillus sphaericus (Bsp) and combination of Bti and Bsp (half the recommended dose of each) with deltamethrin 2.8 EC to attain better control of mosquito larvae. To understand the susceptibility status of the Culex quinquefasciatus larvae in the field, early fourth instar field collected larvae were exposed to the above treatments of biopesticides and were monitored for their persistency till 50% mortality was obtained. The larvae those survived in each treatment were transferred to the concentration of deltamethrin that gave 50% mortality. Observations on larval mortality after the treatment with deltamethrin were recorded after 24 h. The results revealed that Bti excels Bsp, as it recorded 54% mortality only on 17th day after application. The other salient finding of this study is LC50 of deltamethrin is sufficient to follow the biopesticides application for an effective control of Culex larvae.

  2. Numerical computation of gravitational field of general extended body and its application to rotation curve study of galaxies

    Fukushima, Toshio


    Reviewed are recently developed methods of the numerical integration of the gravitational field of general two- or three-dimensional bodies with arbitrary shape and mass density distribution: (i) an axisymmetric infinitely-thin disc (Fukushima 2016a, MNRAS, 456, 3702), (ii) a general infinitely-thin plate (Fukushima 2016b, MNRAS, 459, 3825), (iii) a plane-symmetric and axisymmetric ring-like object (Fukushima 2016c, AJ, 152, 35), (iv) an axisymmetric thick disc (Fukushima 2016d, MNRAS, 462, 2138), and (v) a general three-dimensional body (Fukushima 2016e, MNRAS, 463, 1500). The key techniques employed are (a) the split quadrature method using the double exponential rule (Takahashi and Mori, 1973, Numer. Math., 21, 206), (b) the precise and fast computation of complete elliptic integrals (Fukushima 2015, J. Comp. Appl. Math., 282, 71), (c) Ridder's algorithm of numerical differentiaion (Ridder 1982, Adv. Eng. Softw., 4, 75), (d) the recursive computation of the zonal toroidal harmonics, and (e) the integration variable transformation to the local spherical polar coordinates. These devices succesfully regularize the Newton kernel in the integrands so as to provide accurate integral values. For example, the general 3D potential is regularly integrated as Φ (\\vec{x}) = - G \\int_0^∞ ( \\int_{-1}^1 ( \\int_0^{2π} ρ (\\vec{x}+\\vec{q}) dψ ) dγ ) q dq, where \\vec{q} = q (√{1-γ^2} cos ψ, √{1-γ^2} sin ψ, γ), is the relative position vector referred to \\vec{x}, the position vector at which the potential is evaluated. As a result, the new methods can compute the potential and acceleration vector very accurately. In fact, the axisymmetric integration reproduces the Miyamoto-Nagai potential with 14 correct digits. The developed methods are applied to the gravitational field study of galaxies and protoplanetary discs. Among them, the investigation on the rotation curve of M33 supports a disc-like structure of the dark matter with a double-power-law surface

  3. Medical equipment management

    Willson, Keith; Tabakov, Slavik


    Know What to Expect When Managing Medical Equipment and Healthcare Technology in Your Organization As medical technology in clinical care becomes more complex, clinical professionals and support staff must know how to keep patients safe and equipment working in the clinical environment. Accessible to all healthcare professionals and managers, Medical Equipment Management presents an integrated approach to managing medical equipment in healthcare organizations. The book explains the underlying principles and requirements and raises awareness of what needs to be done and what questions to ask. I

  4. Photon type ultraviolet detection management system in the application of high voltage electrical equipment%光子型紫外检测管理系统在高压电气设备的应用

    黄荣辉; 张宏钊; 姚森敬; 向阳; 段生鹏


    With the continuous expansion of grid, power load requirements are constantly improve, the corresponding preventive maintenance requirements and continuously improve. Electrical equipment work in atmospheric environment, with the loss of the insulation performance, can produce corona discharge phenomenon, electrochemical corrosion in the equipment surface, its long time effect on will pose a threat to the safe operation of lines or equipment. At the same time, the abnormal of corona discharge of small discharge phenomenon and the early signs of failure part defects. Electrical equipment in the process of discharge, the radiation of ultraviolet photons outward. Quantitative detection of corona discharge intensity can be used to indirectly assess the status of the equipment operation, real-time control of electric power equipment running status. Photon type ultraviolet imaging system was applied to high voltage electrical equipment inspection work, can make the high voltage electrical equipment maintenance staff to find loopholes, and help the maintenance staff on-site maintenance, has the very good application value.%随着电网规模的不断扩大,电力负荷要求的也不断提高,相应预防性维护的要求也不断提高。电气设备在大气环境下工作,随着绝缘性能的降低,会产生电晕放电现象,使设备表面发生电化学腐蚀,其长时间作用对线路或设备的安全运行会造成威胁。同时,异常的电晕放电发生的微弱放电现象又是部分缺陷故障的早期征兆。电气设备在放电过程中,会向外辐射大量紫外光子。可以利用定量检测电晕放电强度来间接评估运行设备的状况,实时掌握电力设备的运行状态。将光子型紫外成像管理系统应用于高压电气设备的检测工作当中,可使高压电气设备检修工作人员及时发现设备漏洞,并帮助检修工作人员进行现场维修,具有很好的应用价值。

  5. A contribution on the investigation of the dynamic behavior of rotating shafts with a Hybrid Magnetic Bearing Concept (HMBC) for blower application

    Gronek, Martin, E-mail: MGronek@hs-zigr.d [HOCHSCHULE ZITTAU/GOERLITZ-University of Applied Sciences, Institute of Process Technology, Process Automation and Measuring Technology (IPM), Department Mechatronical Systems, Theodor-Koerner-Allee 16, 02763 Zittau (Germany); Rottenbach, Torsten; Worlitz, Frank [HOCHSCHULE ZITTAU/GOERLITZ-University of Applied Sciences, Institute of Process Technology, Process Automation and Measuring Technology (IPM), Department Mechatronical Systems, Theodor-Koerner-Allee 16, 02763 Zittau (Germany)


    Within a subproject of the RAPHAEL-Program, which was part of the 6th EURATOM Framework Program supervised by the European Commission, it was investigated whether the use of a Hybrid Magnetic Bearing Concept (HMBC) will be beneficial for a blower application. Within the RAPHAEL program, the subproject 'Component Development' is dealing with R and D of components of High Temperature Reactor Technology (HTR), where a major focus is on safety- and reliability-related issues. That implies special requirements for the support of high speed rotating shafts in HTR-Applications that only can be satisfied by using Active Magnetic Bearings (AMB). Regarding safety and competitiveness, AMBs are considered to be key components for the support of rotating HTR-components due to their technical features. AMBs are characterized by an electromagnetic actuator that is generating the bearing force depending on the clearance between stator and rotor, in which the rotor is levitated. Therefore an active control of the coil current is necessary. Furthermore, Touch Down Bearings (TDB) are needed to avoid damages in case of an emergency shut down or in case of energy supply losses. This contribution provides an internal insight on the advantages of a Hybrid Magnetic Bearing Concept that is characterized by a completely Active Magnetic Bearing-supported vertical arranged rotor and an additional permanent magnetic radial orientated bearing. One benefit of the HMBC is an additional radial guidance of the shaft that may reduce the loads while dropping into the Touch Down Bearings e.g. in case of energy supply losses of the AMBs. Reduced loads on the TDBs will increase their life cycle and the availability of the AMB supported component. The scope of this R and D-Project, which will be described more detailed in this contribution, includes: the analytical modeling and simulation of the dynamic behavior of the Hybrid Magnetic Bearing System; the modification of the completely AMB

  6. Effects of Long Term Application of Inorganic and Organic Fertilizers on Soil Organic Carbon and Physical Properties in Maize–Wheat Rotation

    Babbu Singh Brar


    Full Text Available Balanced and integrated use of organic and inorganic fertilizers may enhance the accumulation of soil organic matter and improves soil physical properties. A field experiment having randomized complete block design with four replications was conducted for 36 years at Punjab Agricultural University (PAU, Ludhiana, India to assess the effects of inorganic fertilizers and farmyard manure (FYM on soil organic carbon (SOC, soil physical properties and crop yields in a maize (Zea mays–wheat (Triticum aestivum rotation. Soil fertility management treatments included were non-treated control, 100% N, 50% NPK, 100% NP, 100% NPK, 150% NPK, 100% NPK + Zn, 100% NPK + W, 100% NPK (-S and 100% NPK + FYM. Soil pH, bulk density (BD, electrical conductivity (EC, cation exchange capacity, aggregate mean weight diameter (MWD and infiltration were measured 36 years after the initiation of experiment. Cumulative infiltration, infiltration rate and aggregate MWD were greater with integrated use of FYM along with 100% NPK compared to non-treated control. No significant differences were obtained among fertilizer treatments for BD and EC. The SOC pool was the lowest in control at 7.3 Mg ha−1 and increased to 11.6 Mg ha−1 with 100%NPK+FYM. Improved soil physical conditions and increase in SOC resulted in higher maize and wheat yields. Infiltration rate, aggregate MWD and crop yields were positively correlated with SOC. Continuous cropping and integrated use of organic and inorganic fertilizers increased soil C sequestration and crop yields. Balanced application of NPK fertilizers with FYM was best option for higher crop yields in maize–wheat rotation.

  7. 浅谈增材制造技术在电子设备结构研制中的应用%Application of Additive Manufacturing Technique in Developing of Electronic Equipment Structure



    随着技术的发展,电子设备结构正在向集成化、小型化发展,而增材制造技术是一项革命性的加工制造技术。对增材制造技术的定义、分类、优势以及其在电子设备结构研制中的应用进行了分析阐述,增材制造技术可从样件的快速生产、新结构的研制、提高设备的整体性能和新材料的使用四个方面得到应用。%Along with the development of technology, electronic equipment structure is developed to be integrated and minia-turized, and the additive manufacturing technology is a revolutionary manufacturing technology. This article has analyzed and presented the definition, classification, advantages of additive manufacturing technology as well as its application in the devel-oping of electronic equipment structure. The additive manufacturing technology can be applied in the developing of electronic equipment structure from four aspects of quick manufacturing of sample product, development of new structures, improving the whole performance of equipment and the use of new materials.

  8. 以高新医疗设备推动技术创新提升服务质量%Promoting Technological Innovation and Improving Service Quality with the Application of High-tech Medical Equipments

    李永昌; 汪春晖; 干振华; 杨国斌


    The role of medical equipments for diagnosis has transformed from assistant tools to important means. With the development of medical equipments, technological innovation has been promoted, which improves the quality of medical services. The important roles of high-lech medical equipments in promoting technological innovation and improving the quality of medical services will be discussed in this article. The problems which should be paid attention to during the introduction and application of the medical equipments with high technology will also be presented in terms of innovation promotion and quality improvement of medical services.%医疗设备已从过去作为疾病诊治的辅助工具,逐渐变为重要手段.医疗设备的发展,推动了技术创新,促进了医疗服务质量提升.本文主要阐述了高新医疗设备在推动技术创新、提升服务质量中的意义,剖析了各类高新医疗设备的作用,以及它们发挥作用的主要体现,并从推动技术创新、提升服务质量视角,对引进和应用高新医疗设备应注意的问题进行了探讨.

  9. 7 CFR 3300.64 - Application for certificate for new equipment produced or assembled in the United States or in a...


    ... case of a unit of equipment (i.e., the insulated body with its mechanical refrigerating appliance... insulated body have been tested separately: (1) For the reference mechanical refrigerating appliance: (i... reference insulated body. See paragraph (3)(iii) below. (2) For the identical mechanical...


    A. I. Kotlabay


    Full Text Available Study of directions concerning development of military equipment, its modernization with the purpose to improve its military efficiency is an actual problem for the Armed Forces, military science, designers and researchers.The paper analyzes and estimates possibilities to use civil equipment for military purpose. Problems pertaining to technologies of double application, diversification of civil equipment in military engineering machinery are considered in the paper.

  11. Technology Equipment Rooms.

    Day, C. William


    Examines telecommunications equipment room design features that allow for growth and can accommodate numerous equipment replacements and upgrades with minimal service disruption and with minimal cost. Considerations involving the central hub, power and lighting needs, air conditioning, and fire protection are discussed. (GR)

  12. Universal machine ''Shtrek'' and the tractor-lifter with pneumatic-equipment control. [Auxiliary multipurpose materials handling equipment

    Bal' bert, B.M.; Borumenskiy, V.A.; Lishenko, A.P.; Mitchenko, G.A.


    The machine ''Shtrek'' is described. It makes it possible to mechanize over 20 auxiliary operations: loading-unloading operations: extraction of old and deformed timbering; dissmantling of obstructions; erection of different types of timbering; making and restoring of drainage channels; laying and straightening of a drift and its leveling; assembly and disassembly of pipelines and mine equipment, etc. Depending on the type of operation, the machine has the corresponding suspended equipment. The elementary variant has a limited area of application at mines of the central region of the Dunbass. Currently a pneumatic variant of the machine ''Shtrek'' has been developed. The electric motor and the starter of the pumping equipment of the machine have been replaced by a pneumatic motor and pneumatically controlled valve KTM-50. In this case there was significant reduction in the weight of the pumping equipment and in its overall dimensions; the electric drive of the hydraulic distributors for controlling the mechanisms were replaced by simpler pneumatic ones; the logical circuit of the control system was constructed on the USEPPA elements. A specialized tractor-lifter designed for moving suspended loads is described for auxiliary operations in the near-face zone of the preparatory drifts. The machine also lifts and lowers the boom, rotates the boom by 270/sup 0/ and additionally lifts and lowers the weight-lifting hook.

  13. Application of a computer-based zero-one methodology to the assignment of nurses to a clinical rotation schedule.

    Reid, W M; Seavor, C; Taylor, R G


    This article discusses the application of a zero-one approach to the development of a total program schedule that assigns students to all required clinical courses in an academic nursing program. The approach is based on an operations research technique, zero-one programming. Unlike zero-one programming, the objective function in this formulation is arbitrary; any solution that meets the constraints of the system is acceptable. Also described in this article are the constraints that limit flexibility of student assignments (i.e., available clinical sites and units, instructors, day or evening, maximum class sizes, order of courses), a solution to the scheduling problem at Saint Joseph's (which involves 1,067 equations), and suggestions for the general utility of a zero-one approach for similar administrative problems.

  14. Rotator cuff exercises

    ... this page: // Rotator cuff exercises To use the sharing features on this ... gov/pubmed/25560729 . Read More Frozen shoulder Rotator cuff problems Rotator cuff repair Shoulder arthroscopy Shoulder CT scan Shoulder ...

  15. 故障数据在科研试验装备维修保障中的应用%Application of Fault Data in Maintenance of Scientific Test Equipments

    刘广军; 雷伶俐; 张亮; 柴俊敏


    针对科研试验装备可修系统故障数据的特点,对故障数据在科研试验装备维修保障中的应用进行研究.介绍应用于可修系统故障数据分析的时齐泊松过程和非时齐泊松过程模型及其在故障数据分析中的适用性检验方法,并通过实例介绍可修系统故障数据分析的步骤.结果表明:该方法能判断科研试验装备可靠性发展趋势,在一定程度上克服主观臆断,为装备维修保障决策提供科学依据.%Aiming at the characteristic of the fault data which belongs to the repairable scientific test equipments, the application of the fault data in maintenance of the scientific being studied. Models of homogeneous Possion process and non-homogeneous Possion process and their usability in fault data analysis of repairable equipments be introduced, the steps of the fault data analysis of the repairable equipments illustrated through an example, it shows that the reliability trend of the scientific test equipment can be judged through the fault data analysis, to a certain extent, the supposition can be avoided and the scientific basis for the decision of equipment maintenance be provided.

  16. Application of Laser Tracker in Maintenance Equipment for Nuclear Power Plant%三维激光跟踪仪在核电维修设备制造检验中的应用



    The maintenance equipment of reactor internals is very important for maintenance in service in nuclear power plant. As its size is large and its operation is highly accurate, the equipment is difficult to be manufactured and tested.The problem can be solved through taking advantage of laser tracker.Meanwhile, the application also provides evidence for manufacturing quality.%堆内构件专用维修设备在核电厂在役维修中占有重要地位,其尺寸庞大、运行精度高,在制造检验中存在一定困难。通过三维激光跟踪仪的应用,解决了这些难题,也对其制造质量提供了检验依据。

  17. Application Prospect of Near Field Communication in Medical Equipment Management%近距离无线通讯技术在医疗设备管理中的应用展望



    It has become an inevitable trend in hospital evolution that hospital information system and its management model are wireless, mobile and intelligent. Based on current situation of medical equipment management and combined with the principle, advantages and disadvantages of NFC, this paper discusses the application prospect of near field communication (NFC) in medical equipment assets management.%医疗行业信息系统及管理模式的无线化、移动化、智能化已成医院发展的必然态势.本文在分析医疗设备资产管理现状的基础上,结合近距离无线通讯技术(NFC)的原理及优缺点,探讨NFC在医疗设备资产管理中的应用及前景.

  18. KTE5型矿山救援可视化指挥装置的应用与改进%Improvement and Application of KTE5 Visual Command Equipment Used in Mine



    结合矿山救护队的工作特点,阐述了KTE5型矿山救援可视化指挥装置的工作原理,论述了设备的功能特点。通过设备在处理灾害事故中的应用分析,提出了完善与改进意见。%This article introduces the characteristics of mine rescue team,elaborated work principle of KTE5 visual command equipment used in mine, discusses the equipment features. Through the device disposed in the disaster accident in application analysis, put forward to perfect and improve an opinion.

  19. Geometric Collocation Method on SO(3 with Application to Optimal Attitude Control of a 3D Rotating Rigid Body

    Xiaojia Xiang


    Full Text Available The collocation method is extended to the special orthogonal group SO(3 with application to optimal attitude control (OAC of a rigid body. A left-invariant rigid-body attitude dynamical model on SO(3 is established. For the left invariance of the attitude configuration equation in body-fixed frame, a geometrically exact numerical method on SO(3, referred to as the geometric collocation method, is proposed by deriving the equivalent Lie algebra equation in so(3 of the left-invariant configuration equation. When compared with the general Gauss pseudo-spectral method, the explicit RKMK, and Lie group variational integrator having the same order and stepsize in numerical tests for evolving a free-floating rigid-body attitude dynamics, the proposed method is higher in accuracy, time performance, and structural conservativeness. In addition, the numerical method is applied to solve a constrained OAC problem on SO(3. The optimal control problem is transcribed into a nonlinear programming problem, in which the equivalent Lie algebra equation is being considered as the defect constraints instead of the configuration equation. The transcription method is coordinate-free and does not need chart switching or special handling of singularities. More importantly, with the numerical advantage of the geometric collocation method, the proposed OAC method may generate satisfying convergence rate.

  20. Rotating Cavitation Supression Project

    National Aeronautics and Space Administration — FTT proposes development of a rotating cavitation (RC) suppressor for liquid rocket engine turbopump inducers. Cavitation instabilities, such as rotating...

  1. Application of BFDA in Maintenance Task Scheduling of Ordnance Equipments%BFOA在军械装备维修任务调度中的应用

    姚双印; 韩庆田


    分析了军械装备维修任务调度问题的特点,给出了细菌觅食优化算法(Bacteria Foraging Optimization Algorithm)的操作流程,针对军械装备维修任务调度问题建立了数学建模,设计了编码策略并应用Matlab工具软件进行了仿真计算。%Firstly, the characters of maintenance task scheduling of ordnance equipment were analyzed. Then the BFOA programming flows were given out. According to the problem of maintenance task scheduling of ordnance equipment, the mathematic model was established, the coding strategy was designed, and the simulation calculation was carried out using Matlab

  2. 智能监控系统在压装设备中的应用%Application of Intelligent Monitoring System in the Press-fit Equipment

    张乐平; 李美玲; 薛鹏; 邹立文; 史旭洲


    The Interference assembly process was applied widely in the industrial production line,its rationality had a direct im-pact on product performance,but the ordinary press-fit equipment could not detect whether the assembly had been placed in place or not and the amount of interference between the assembly. The intelligent press-fit equipment was described,through the using of the feature that the fitting force and stroke had corresponding coordinate relations in the work process of the press-fit equipment,the intelli-gent control system was used. The problems of the ordinary press-fit equipment are solved,the quality of products is improved,and re-duced the rejection rate of the press-fitted products is reduced.%在工业化生产线上,过盈装配工艺应用广泛,其合理性直接影响产品的性能,而普通压机无法检测装配件是否放置到位和装配件之间的过盈量。文中所述的智能压机通过利用压装设备工作过程中压装力和行程有对应坐标关系的特点,应用智能化的控制系统,解决了普通压机存在的问题,提高了压装产品的质量、降低了产品的废品率。

  3. 林木花卉水培实验设备制备与应用%Preparation and application of hydroponic experimental equipment for trees and flowers

    杨振德; 玉舒中


    水培是现代农业的一项关键技术,学生掌握这一技术对于推进现代农业的精确化栽培具有极为重要的意义.能自动提供营养、水分、氧气、光照等且适合林木花卉的水培实验设备尚未见报道.为满足林学、园林等专业实验教学改革与创新需要,制备了林木花卉水培实验设备.该设备由支架、栽培容器、贮液箱、水泵、光源和定时控制器等构成,该设备可为多个学科领域的教学与科研工作提供良好的实验条件.%Hydroponic culture is one of key technologies in modern agriculture, and it is very important for students to master this technology to promote the precise cultivation of modern agriculture. But the hydroponic experimental equipment has not been reported which is suitable for trees and flowers and can automatically provide nutrition, water, oxygen, illumination, etc. In order to meet the needs of reform and innovation in special experimental teaching of forestry, landscape and other disciplines, the hydroponics experimental equipment for trees and flowers are developed. This equipment is composed of stent, cultivation container, liquid storage container, water pump, light source, timing controller, etc. This equipment can provide a good experimental condition for teaching and research work in multiple disciplinary fields.

  4. X射线成像系统辅助设备的研发与应用%Development and application on auxiliary equipment of X-ray imaging system

    马飞越; 王博


    Because the installation position of vertical layout switching equipments including GIS (gas insulated switch gear) equipment,tank circuit-breaker and live tank circuit-breaker are higher,the function at height and angle of the X-ray imaging system equipment cannot meet the imaging inspection requirements. The paper developes a height and angle adjustable and mobile X-ray imaging auxiliary equipment,and successfully applies to X-ray imaging inspection of 330 kV live tank circuit-breaker. The application result shows that the device not only improves the efficiency of x-ray imaging inspection,but also ensures the safety of test staff,provides help for the application and popularization of X-ray imaging inspection technology.%由于垂直布置的GIS设备、罐式断路器及瓷柱式断路器等开关类设备安装位置较高,现有X射线成像系统自带辅助装置在高度和角度上不能满足现场X射线成像检测需求。本文开发了一种高度、角度可调的移动式X射线成像系统辅助设备,并成功应用于330 kV瓷柱式断路器X射线成像检测中。应用结果表明:该装置不仅提高了X射线成像检测的效率,而且保证了试验人员安全性,为X射线成像检测技术的推广应用提供了帮助。

  5. Open-Source Assisted Laboratory Automation through Graphical User Interfaces and 3D Printers: Application to Equipment Hyphenation for Higher-Order Data Generation.

    Siano, Gabriel G; Montemurro, Milagros; Alcaráz, Mirta R; Goicoechea, Héctor C


    Higher-order data generation implies some automation challenges, which are mainly related to the hidden programming languages and electronic details of the equipment. When techniques and/or equipment hyphenation are the key to obtaining higher-order data, the required simultaneous control of them demands funds for new hardware, software, and licenses, in addition to very skilled operators. In this work, we present Design of Inputs-Outputs with Sikuli (DIOS), a free and open-source code program that provides a general framework for the design of automated experimental procedures without prior knowledge of programming or electronics. Basically, instruments and devices are considered as nodes in a network, and every node is associated both with physical and virtual inputs and outputs. Virtual components, such as graphical user interfaces (GUIs) of equipment, are handled by means of image recognition tools provided by Sikuli scripting language, while handling of their physical counterparts is achieved using an adapted open-source three-dimensional (3D) printer. Two previously reported experiments of our research group, related to fluorescence matrices derived from kinetics and high-performance liquid chromatography, were adapted to be carried out in a more automated fashion. Satisfactory results, in terms of analytical performance, were obtained. Similarly, advantages derived from open-source tools assistance could be appreciated, mainly in terms of lesser intervention of operators and cost savings.

  6. Analysis of Current Application and Development of Milking Equipment%我国挤奶设备的应用现状与发展分析

    李源源; 许桢子; 陈蕾


    The rapid development of the dairy industry has promoted the rise of the milking equipment industry. This article reviews the present situation of China's milking equipment, points out the existing problems in this line, and makes analysis of the development trend of the milking equipment in China in light of its development in other countries in a bid to provide reference for mechanized milk pro-duction.%近年来,我国奶业的快速发展促进了挤奶设备行业的兴起。概述我国挤奶设备应用现状,指出我国挤奶设备在发展中存在的主要问题,并参照国外挤奶设备发展情况,分析我国挤奶设备未来的发展趋势,为奶业生产机械化提供参考。

  7. Application of layered poly (L-lactic acid cell free scaffold in a rabbit rotator cuff defect model

    Inui Atsuyuki


    Full Text Available Abstract Background This study evaluated the application of a layered cell free poly (L-lactic acid (PLLA scaffold to regenerate an infraspinatus tendon defect in a rabbit model. We hypothesized that PLLA scaffold without cultivated cells would lead to regeneration of tissue with mechanical properties similar to reattached infraspinatus without tendon defects. Methods Layered PLLA fabric with a smooth surface on one side and a pile-finished surface on the other side was used. Novel form of layered PLLA scaffold was created by superimposing 2 PLLA fabrics. Defects of the infraspinatus tendon were created in 32 rabbits and the PLLA scaffolds were transplanted, four rabbits were used as normal control. Contralateral infraspinatus tendons were reattached to humeral head without scaffold implantation. Histological and mechanical evaluations were performed at 4, 8, and 16 weeks after operation. Results At 4 weeks postoperatively, cell migration was observed in the interstice of the PLLA fibers. Regenerated tissue was directly connected to the bone composed mainly of type III collagen, at 16 weeks postoperatively. The ultimate failure load increased in a time-dependent manner and no statistical difference was seen between normal infraspinatus tendon and scaffold group at 8 and 16 weeks postoperatively. There were no differences between scaffold group and reattach group at each time of point. The stiffness did not improve significantly in both groups. Conclusions A novel form of layered PLLA scaffold has the potential to induce cell migration into the scaffold and to bridge the tendon defect with mechanical properties similar to reattached infraspinatus tendon model.

  8. 29 CFR 1926.603 - Pile driving equipment.


    ... 29 Labor 8 2010-07-01 2010-07-01 false Pile driving equipment. 1926.603 Section 1926.603 Labor... Operations § 1926.603 Pile driving equipment. (a) General requirements. (1) Boilers and piping systems which are a part of, or used with, pile driving equipment shall meet the applicable requirements of...

  9. Dimensionality constraints of light induced rotation

    Oroszi, László; Galajda, Péter; Kelemen, Lóránd; Mathesz, Anna; Vicsek, Tamás; Vizsnyiczai, Gaszton; Ormos, Pál


    We have studied the conditions of rotation induced by collimated light carrying no angular momentum. Objects of different shapes and optical properties were examined in the nontrivial case where the rotation axis is perpendicular to the direction of light propagation. This geometry offers important advantages for application as it fundamentally broadens the possible practical arrangements to be realised. We found that collimated light cannot drive permanent rotation of 2D or prism-like 3D objects (i.e. fixed cross-sectional profile along the rotation axis) in the case of fully reflective or fully transparent materials. Based on both geometrical optics simulations and theoretical analysis, we derived a general condition for rotation induced by collimated light carrying no angular momentum valid for any arrangement: Permanent rotation is not possible if the scattering interaction is two-dimensional and lossless. In contrast, light induced rotation can be sustained if partial absorption is present or the object ...

  10. 清洗质量指标在清洗质量持续改进中的应用%The application of equipment cleaning criteria in continuous quality improvement

    曾月英; 何慰英; 李艳珊; 潘爱萍; 冯秀兰


    目的:探讨清洗质量指标在提高器械清洗质量、技术水平和有效实施质量控制中的作用。方法:通过确定器械清洗质量指标,科学分析和控制器械清洗不合格的影响因素,运用持续质量改进的手段,合理配置人力资源并加强培训,建立器械清洗质量控制的运行机制。结果:与实施持续质量改进措施前比较,器械清洗总不合格率、管腔类器械清洗不合格率、结构复杂类器械清洗不合格宰均降低,P<0.01,有统计学意义。节假日去污区工作岗位人员配置数与确定清洗质量指标前人数相比减少。结论:确定清洗质量指标体系,通过数据能更准确客观地反映器械的清洗质量情况,为持续质量改进、及时检测工作方法有效性、流程的合理性,合理配置人力资源提供了科学的依据。%Objective: To explore the effect of equipment cleaning criteria on improving the quality of the cleaning equipment, technical level and effective quality controls. Method: We took some effective measures to improve the quality of cleaning equipment by establishing the criteria for the cleaning equipment, scientifically analyzing the influencing factors of equipments cleaning failure, utilizing continious quality improvement methods, properly arranging and training staffs and building equipment cleaning quality control mechanism. Results: There was significant improvement after the application of continuous quality improvement in the overall cleaning failure rates and failure rates of cleaning lumen and complex structure equipment (P < 0.01). The number of staffs needed during holidays is decreased by 25% when compared with the number before the application of improvement method. Conclusion: Through setting up equipment cleaning criteria, we could precisely and objectively master the situation of equipment cleaning quality and establish scientifical foundation for analyzing the results

  11. A novel no-insulation winding technique of high temperature-superconducting racetrack coil for rotating applications: A progress report in Korea university

    Choi, Y. H.; Song, J. B.; Yang, D. G.; Kim, Y. G.; Hahn, S.; Lee, H. G.


    This paper presents our recent progress on core technology development for a megawatt-class superconducting wind turbine generator supported by the international collaborative R&D program of the Korea Institute of Energy Technology Evaluation and Planning. To outperform the current high-temperature-superconducting (HTS) magnet technology in the wind turbine industry, a novel no-insulation winding technique was first proposed to develop the second-generation HTS racetrack coil for rotating applications. Here, we briefly report our recent studies on no-insulation (NI) winding technique for GdBCO coated conductor racetrack coils in the following areas: (1) Charging-discharging characteristics of no-insulation GdBCO racetrack coils with respect to external pressures applied to straight sections; (2) thermal and electrical stabilities of no-insulation GdBCO racetrack coils encapsulated with various impregnating materials; (3) quench behaviors of no-insulation racetrack coils wound with GdBCO conductor possessing various lamination layers; (4) electromagnetic characteristics of no-insulation GdBCO racetrack coils under time-varying field conditions. Test results confirmed that this novel NI winding technique was highly promising. It could provide development of a compact, mechanically dense, and self-protecting GdBCO magnet for use in real-world superconducting wind turbine generators.

  12. Application of response surface methodology and central composite rotatable design for modeling the influence of some operating variables of a Multi-Gravity Separator for coal cleaning

    N. Aslan [Cumhuriyet University, Sivas (Turkey). Mining Engineering Department


    In this study, the application of response surface methodology (RSM) and central composite rotatable design (CCRD) for modeling the influence of some operating variables on the performance of a Multi-Gravity Separator (MGS) for coal cleaning was discussed. Four operating variables of MGS, namely drum speed, tilt angle, wash water and feed solids were changed during the tests based on the CCRD. In order to produce clean coal with MGS, mathematical model equations were derived by computer simulation programming applying least squares method using MATLAB 7.1. These equations that are second-order response functions representing ash content and combustible recovery of clean coal were expressed as functions of four operating parameters of MGS. Predicted values were found to be in good agreement with experimental values (R{sup 2} values of 0.84 and 0.93 for ash content and combustible recovery of clean coal, respectively). This study has shown that the CCRD and RSM could efficiently be applied for the modeling of MGS for coal and it is economical way of obtaining the maximum amount of information in a short period of time and with the fewest number of experiments. 12 refs., 5 figs., 4 tabs.

  13. 净现值法在医疗设备采购中的应用%Research on the application of Net Present Value method in medical equipment procurement

    查磊; 蔡军


    net present value for 1.061918 million yuan; project net present value of 5.74608 million yuan; scheme 2 net present value, the second scheme, the net present value of the maximum. Net present value method is an important guarantee for hospital equipment purchase and scientific investment and improved management. Conclusion: Application of net present value method in the purchase of medical equipment show that in equipment procurement program diversification, multiple choice, with net present value method were quantified in order to provide the basis for decision-making, the use of net present value method and the traditional procurement scheme option compared to standards and the scientific nature of medical equipment procurement management, accuracy and objectivity of data analysis.

  14. Reliable Electronic Equipment

    N. A. Nayak


    Full Text Available The reliability aspect of electronic equipment's is discussed. To obtain optimum results, close cooperation between the components engineer, the design engineer and the production engineer is suggested.

  15. Office equipment energy use and trends

    Piette, M.A.; Eto, J.H.; Harris, J.P.


    Office information technologies are using an increasing amount of energy in commercial buildings. During recent forecasting hearings in California, the office equipment end use has been a major source of differences among forecasts of commercial sector energy use. Not only are there major differences in forecasted load growth resulting from the energy use of office equipment, but there are also differences in interpretations of historical and base-year estimates. Understanding office equipment energy use is particularly important because office equipment is widely believed to be the fastest growing electrical end use in the fastest growing sector. This report describes the development and application of a spreadsheet to estimate current and future energy use by office equipment. We define the term office equipment'' to mean information processing technologies used in buildings. The seven categories of office equipment relate to categories found in our analysis of utility surveys and industry sales reports. These seven categories of equipment are examined for eleven types of commercial buildings.

  16. Office equipment energy use and trends

    Piette, M.A.; Eto, J.H.; Harris, J.P.


    Office information technologies are using an increasing amount of energy in commercial buildings. During recent forecasting hearings in California, the office equipment end use has been a major source of differences among forecasts of commercial sector energy use. Not only are there major differences in forecasted load growth resulting from the energy use of office equipment, but there are also differences in interpretations of historical and base-year estimates. Understanding office equipment energy use is particularly important because office equipment is widely believed to be the fastest growing electrical end use in the fastest growing sector. This report describes the development and application of a spreadsheet to estimate current and future energy use by office equipment. We define the term ``office equipment`` to mean information processing technologies used in buildings. The seven categories of office equipment relate to categories found in our analysis of utility surveys and industry sales reports. These seven categories of equipment are examined for eleven types of commercial buildings.

  17. Cooling of electronic equipment

    A. Kristensen, Anders Schmidt


    Cooling of electronic equipment is studied. The design size of electronic equipment decrease causing the thermal density to increase. This affect the cooling which can cause for example failures of critical components due to overheating or thermal induced stresses. Initially a pin fin heat sink...... is considered as extruded profiles are inadequate for compact designs. An optimal pin fin shape and configuration is sought also taking manufacturing costs into consideration. Standard methods for geometrical modeling and thermal analysis are applied....

  18. Quarry Equipment Yearbook 2003



    This issue of the journal is devoted to an annual review of developments in the equipment used for minerals extraction and recycling. For each of 12 types of equipment, an editorial review is presented of developments and a tabular presentation of suppliers' ranges and contact information, including e-mail addresses and websites. The sections are: asphalt plants, conveyors, crushers and screens, drill rigs, dump trucks, excavators, hammers, pumps, tyres, weighbridges, wheel loaders and wheel washers.

  19. Rotating Drive for Electrical-Arc Machining

    Fransen, C. D.


    Rotating drive improves quality of holes made by electrical-arc machining. Mechanism (Uni-tek, rotary head, or equivalent) attached to electrical-arc system. Drive rotates electrode as though it were mechanical drill, while an arc disintegrates metal in workpiece, thereby creating hole. Rotating electrode method often used in electric-discharge machining. NASA innovation is application of technique to electrical-arc machining.

  20. Optical rotation sensors

    Rotge, J. R.; Simmons, B. J.; Kroncke, G. T.; Stech, D. J.


    Research efforts were concentrated on passive ring laser rotation sensor technology. Initial efforts were performed on supportive projects, e.g., laser stabilization, followed by a 0.62 sq m passive resonant ring laser gyro (PRRLG), leading to the development of a 60 sq m system mounted on the pneumatically supported isolation test platform (Iso-Pad) at FJSRL. Numerous sub-system tasks and a feasibility 0.62 sq m PRRLG were completed, supporting projections of very high resolution performance by a large 60 sq m PRRLG. The expected performance of the large PRRLG, on the order of 10 to the minus 10th power ERU (earth rate units), would provide an accurate error model applicable to Air Force operational ring laser gyros, a new source of geophysical data, e.g., earth wobble and variations in earth rotation, a proven design concept applicable to Air Force sensor needs as reference to MX instruments tests, and relativity experiments. This report documents the many accomplishments leading to, and the status of the large PRRLG at the date of the PRRLG stop order, November 1985.

  1. Jupiter and Saturn Rotation Periods

    Helled, Ravit; Anderson, John D


    Anderson & Schubert (2007, Science,317,1384) proposed that Saturn's rotation period can be ascertained by minimizing the dynamic heights of the 100 mbar isosurface with respect to the geoid; they derived a rotation period of 10h 32m 35s. We investigate the same approach for Jupiter to see if the Jovian rotation period is predicted by minimizing the dynamical heights of its isobaric (1 bar pressure level) surface using zonal wind data. A rotation period of 9h 54m 29s is found. Further, we investigate the minimization method by fitting Pioneer and Voyager occultation radii for both Jupiter and Saturn. Rotation periods of 9h 55m 30s and 10h 32m 35s are found to minimize the dynamical heights for Jupiter and Saturn, respectively. Though there is no dynamical principle requiring the minimization of the dynamical heights of an isobaric surface, the successful application of the method to Jupiter lends support to its relevance for Saturn. We derive Jupiter and Saturn rotation periods using equilibrium theory in ...

  2. Rotation of cometary meteoroids

    Čapek, D.


    Aims: The rotation of meteoroids caused by gas drag during the ejection from a cometary nucleus has not been studied yet. The aim of this study is to estimate the rotational characteristics of meteoroids after their release from a comet during normal activity. Methods: The basic dependence of spin rate on ejection velocity and meteoroid size is determined analytically. A sophisticated numerical model is then applied to meteoroids ejected from the 2P/Encke comet. The meteoroid shapes are approximated by polyhedrons, which have been determined by a 3D laser scanning method of 36 terrestrial rock samples. These samples come from three distinct sets with different origins and characteristics, such as surface roughness or angularity. Two types of gas-meteoroid interactions and three gas ejection models are assumed. The rotational characteristics of ejected meteoroid population are obtained by numerical integration of equations of motion with random initial conditions and random shape selection. Results: It is proved that the results do not depend on a specific set of shape models and that they are applicable to the (unknown) shapes of real meteoroids. A simple relationship between the median of meteoroid spin frequencies bar{f} (Hz), ejection velocities vej (m s-1), and sizes D (m) is determined. For diffuse reflection of gas molecules from meteoroid's surface it reads as bar{f≃ 2× 10-3 v_ej D-0.88}, and for specular reflection of gas molecules from meteoroid's surface it is bar{f≃ 5× 10-3 v_ej D-0.88}. The distribution of spin frequencies is roughly normal on log scale, and it is relatively wide: a 2σ-interval can be described as (0.1, 10)× bar{f}. Most of the meteoroids are non-principal axis rotators. The median angle between angular momentum vector and spin vector is 12°. About 60% of meteoroids rotate in long-axis mode. The distribution of angular momentum vectors is not random. They are concentrated in the perpendicular direction with respect to the gas

  3. Energy saving by means of air conditioning equipment replacement and the household application of thermal insulation; Ahorro de energia electrica por reemplazo de equipos de aire acondicionado y aplicacion de aislamiento termico en viviendas

    Peralta Solorio, Jose Luis [Fideicomiso para el Ahorro de la Energia (Mexico)


    An extension study of the Financing Program for Energy Saving looked for the evaluation of the electric energy saving potential obtained by the replacement of air conditioning equipment and the application of thermal insulation in 30 houses of two Mexican cities with warmth climate. In a joint effort with Comision Federal de Electricidad the consumption files of the users were analyzed and field measurements of electric demand and of refrigeration were made. As a following step the change of the refrigeration necessities derived from the application of thermal insulation were evaluated as well as the energy efficiency improvement obtained by the substitution of the air conditioning equipment and the favorable results obtained by the implementation of both measures - thermal insulation and change of air conditioning equipment in a joint form. This way, as a conclusion, the optimum sequence of application of these measures is revealed. [Spanish] Un estudio extension del Programa de Financiamiento para el Ahorro de Energia Electrica busco evaluar el potencial de ahorro de energia electrica alcanzado por el reemplazo de equipos de aire acondicionado y la aplicacion de aislamiento termico en 30 viviendas de dos ciudades mexicanas con clima calido. En un esfuerzo conjunto con la Comision Federal de Electricidad se analizaron los historiales de consumo de los usuarios y se efectuaron las mediciones de campo de demanda electrica y de refrigeracion. Como paso siguiente se valoro el cambio en las necesidades de refrigeracion derivado de la aplicacion de aislamiento termico al igual que la mejora en eficiencia energetica obtenida por la sustitucion de aire acondicionado y se identificaron los resultados favorecedores arrojados por la implementacion de ambas medidas -aislamiento termico y cambio de equipo de aire acondicionado- en forma conjunta. De esta manera, como conclusion, se devela la mas optima secuencia de aplicacion de estas medidas.

  4. OPC UA技术在冶金设备监测系统中的应用%Application of OPC UA Technology in Monitoring System for Metallurgical Equipment

    姜泽苗; 孔庆奎; 范瑜


    OPC UA技术在工业控制方面有着不可替代的优势,主要体现在其跨平台性和实时性上,可以方便地解决工业现场监控过程中各个子系统和底层设备之间互操作以及互通信的难题。结合冶金现场设备监测系统的搭建,对OPC UA技术规范进行了研究,开发了OPC UA客户端和服务器,实现了对冶金设备运行状态的实时监测并及时制定故障应对方案的目的。 OPC UA技术在信息建模与跨平台方面的强大优势预示着基于OPC UA技术的集成系统必将成为今后的开发热点。%The technology of OPC UA has irreplaceable superior in industrial control area, especially its cross platform and real time performance;the difficulties of the interoperability and intercommunication among all the subsystems and bottom layer equipment in industrial field monitoring. The specifications of OPC US technology is researched combining with the establishment of monitoring system for metallurgy field equipment;and client and server of OPC UA are developed for implementing real time monitoring for the operation status of metallurgy equipment and failure timely responded scheme. The outstanding superior of OPC UA in information modeling and cross-platform indicates that the integrated systems based on OPC UA will definitely become the hot spots of development in the future.

  5. 洁净厂房夹层电击防护措施应用%Application of Protection Measures against Electric Shock at Equipment Layer of Clean Workshop



    Due to multiple pipelines and narrow space, the electric shock risk of equipment layer of clean workshop is rather high. From the aspect of protection against electric shock, several suggestions are proposed as follows: ①For fix installed lightings, Class Ⅰ luminaire shall be generally adopted. Both the SELV power and 220 V power can be adopted for power supply. When SELV is adopted, power type selection and wiring system shall meet with the requirements of relevant specifications. ②For portable lamp, portable electric equipment and stationary electric equipment, full consideration shall be given to the risks of electric shock and suitable protection measures against electric shock like SELV, electrical separation and RCD shall be adopted.%洁净厂房设备夹层内管线多,空间狭小,电击危险性较高,从电击防护的角度提出一些建议:①固定安装的照明灯具一般采用Ⅰ类灯具,可采用特低电压(SELV),也可以采用220 V供电,当采用SELV供电时电源选型及布线系统应满足相关规范要求;②手提行灯、移动式用电设备、固定用电设备应充分考虑其电击危险性,选取适当的电击防护措施,如特低电压(SELV)、电气分隔、 RCD附加保护措施等。

  6. Remanufacturing Technology in Continuous Casting Core Equipment and Its Application%连铸关键设备再制造技术及应用

    侯峰岩; 任乔华; 高锦岩


    连铸关键设备的再制造是高效、绿色钢铁发展的重要方向.介绍了连铸结晶器和连铸辊的失效形式、表面处理技术以及结构设计技术在结晶器和连铸辊上的研究与应用;分析总结了各种表面涂层的热稳定性能、耐磨损性能和实际应用寿命;运用有限元解析技术对结晶器铜板和连铸辊的结构、服役条件进行分析,并对其进行各种优化设计,与优异的表面处理技术相配合,提高连铸设备的整体使用寿命.实践表明借助再制造工程体系的先进表面技术和先进设计与管理方法,可以使连铸设备不断得到性能恢复和技术改造升级,延长其寿命和报废期限,提高连铸设备的档次和附加值,具有良好的经济和社会效益.%Remanufacturing of continuous casting core equipment is an important direction for efficient devel-opment of green steel. The failure mode of continuous casting mold and roller was described. Surface technol-ogy and structural design techniques for continuous casting core equipment were introduced. Thermal stabili-ty, wear resistant and life of all type coatings were analyzed. Finite element analytical techniques were used to analyze the structure and service condition of continuous casting mold and roller. Designs were optimized and matched the excellent surface technology to improve the overall life of the continuous casting equipment. Prac-tice show that the performance and technology of continuous casting equipment are improved through advanced surface technology, design and management of the remanufacturing engineering system. The life expectancy and retirement period are extended and the quality and added value are improved, resulting in good social and economical benefits.

  7. Study and application of harmonic mitigation technology of electrical and mechanical equipment%机电加工设备谐波抑制方法的研究和应用



    随着电力电子技术的迅速发展,大量新型电力电子设备在机电加工行业获得了广泛应用,给电网带来了严重的谐波污染,引起一系列用电质量问题,严重地危害了电网的安全可靠运行.为解决电力电子装置应用中带来的谐波污染问题,介绍了利用数字有源电力滤波器装置来治理谐波污染的方法,很好地解决了电力电子设备对机电设备的谐波污染问题.%With the development of the technology of power electronics, plenty of power electronic equipments have been widely used in the field of the electrical and mechanical manufacture today. It has brought a series of power quality problem and heavy harmonic pollution to power systems, and has lessened the security running of power systems. For the purpose of solving the harmonic pollution by the application of power electronic devices, this paper introduces a method of using digital active power filter, therefore the harmonic pollution problem of power electronic equipment to the electrical and mechanical equipment is well solved.

  8. [Fabrication of improved multi-slit equipment to obtain the input-output characteristics of computed radiography systems: correction of the heel effect, and application to high tube-voltage experiments].

    Maehata, Itsumi; Hayashi, Hiroaki; Takegami, Kazuki; Ujita, Syohei; Kimoto, Natsumi; Konishi, Yuki; Fukuda, Ikuma


    Multi-slit equipment is a new experimental apparatus that can measure the input-output characteristics of a CR (computed radiography) system with limited influence of the fading effect. Kimoto et al. recently proposed a new type of multi-slit apparatus in which the multi-slit setup, the insertion region of the phosphor plate, and plate shielding are integrated to create a single handy-type item (an all-in-one type multi-slit apparatus). However, some problems remained unsolved. The aims of this study were to devise a setup for application to high tube voltage conditions, and to improve the all-in-one type multi-slit equipment so as to correct the heel effect. We examined the capabilities of our improved multi-slit equipment using diagnostic X-ray apparatus and found that it can obtain input-output characteristics with 5% accuracy for tube voltages of 40-140 kV and SID (source to image receptor distances) of 50-200 cm.

  9. Study and analysis on the demand degree of different medical staff for the application knowledge of medical equipment%不同医务人员对医疗设备应用知识需求程度分析



    Objective To analyze and study the demand degree of different medical staff for the application knowledge of medical equipment. Methods 75 medical staff in our hospital from October 2011 to May 2013 were selected as research object,and of application knowledge of medical equipment demand degree of all the medical staff were alll evaluated by questionnaire,then the evaluation results of all the medical staff with different operating post,positional title,work seniority and educational attainments were compared. Results The demand degree of nurses,staff with lower positional title,shorter work seniority and lower educational attainments for the application knowledge of medical equipment were all obviously higher than those of other medical staff,all P<0.05,there were all significant differences. Conclusion The demand degree of different medical staff for the application knowledge of medical equipment have obvious differences,so the demand of medical staff with different operating post,positional title,work seniority and educational attainments should be paid to targeted intervention.%目的:分析不同医务人员对医疗设备应用知识需求程度。方法选取2011年10月~2013年5月本院的75名医务人员为研究对象,采用问卷调查对所有医务人员进行医疗设备应用知识需求程度评估,然后将其中不同岗位、职称、工作年限及文化程度者的评估结果进行比较。结果护理人员、职称较低、工作年限较短及文化程度较低的医务人员对于医疗设备应用知识需求程度明显高于其他医务人员,差异有统计学意义(P<0.05)。结论不同医务人员对医疗设备应用知识需求程度存在明显的差异,故在干预的过程中应注意对不同岗位、职称、工作年限及文化程度者的需求进行针对性干预。

  10. Project scheduling with resources constraints: application in the equipment production for the oil industry; Scheduling de projetos com restricao de recursos: aplicacao na producao de equipamentos para a industria de petroleo

    Cruz, Carolina A.O.; Ferreira Filho, Virgilio J.M. [Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, RJ (Brazil). Coordenacao dos Programas de Pos-graduacao de Engenharia (COPPE)


    One of the essential steps in the main scope Project Management is the Time Management made by the planning and control of the project schedule. In this work is presented the resource constrained scheduling problem beyond its mathematical formulation and a review of papers about this issue. In sequence is presented a practical example of this model considering a simplified model of an engineering project schedule of oil production equipment. The results obtained with the model application are shown and the conclusions about the work with resource constrained scheduling problems. (author)

  11. The application of risk management to using electrosurgical equipment safely in operating room%风险管理在手术室电外科中的安全应用

    赵海璇; 王洁贞; 安福丽; 赵金丹; 李光霞


    目的:探讨风险管理在手术室电外科设备中的应用.方法:应用风险管理理念和方法,对手术中使用电外科设备的各环节存在的风险进行识别、评估,强化护士的法制观念和风险意识,营造安全文化氛围,制定安全、有效的电外科设备管理措施,对护士进行相关知识培训及考核,加强薄弱环节管理及全面监控.结果:手术室护士对使用电外科设备安全意识及防范意外伤害增强,手术患者安全完成手术,未发生电外科相关意外伤害.结论:应用风险管理增强护士对电外科设备安全使用的意识,可确保护理质量及手术安全.%Objective:To investigate the application of risk management to using electrosunpcal equipment safely in operating room. Methods;The risks of all aspects while electrosurgical equipment is being used in surgery are identified and assessed by the concepts and methods of risk management. The measures also would be taken as follows: strengthen the nurses' legal concept and riak awareness, and create the safety culture atmosphere, and enact safe and effective management measures of electrosurgical equipment. The training and assessment of the relevant knowledge to nurses should be conducted to enhance the management of weak links and comprehensive monitoring. Results: The safety awareness and the ability to prevent accidental injury of operating room nurses on the use of electrosurgical equipment was enhanced. The patients' operations were completed safely and the electrosurgery related accidental injury doesn't occur. Conclusion:The application of risk management can enhance the awareness of nurses on the safety use of electrosurgical equipment and ensure that the quality of care and safety of operation.

  12. CERN computing equipment for Senegal

    Anaïs Schaeffer


    On 26 May, CERN once again had the honour of donating computing equipment to a foreign institute.   This time, around 100 servers and five network hubs were sent to Senegal, making it the seventh country, after Morocco, Ghana, Bulgaria, Serbia, Egypt and the Philippines, to receive a donation of computing equipment from the Organization. The official ceremony was held at CERN on 26 May in the presence of the Director-General, Rolf Heuer, and Senegal's ambassador to Geneva, Fodé Seck, who both expressed their enthusiasm for the project. The equipment is intended for Cheikh Anta Diop University (UCAD) in Dakar and will be of particular use to students attending the African School of Fundamental Physics and its Applications (ASP 2014) taking place from 3 to 23 August, for which CERN is a partner. The ASP allows a large number of African students to hone their skills in high-energy physics and to forge professional links with fellow physicists in Africa and Europe. ...

  13. Application of Quality Control Circle Activitiesi n Reducing Risk of Medical Equipment%品管圈活动在降低医疗设备应用风险中的应用

    路鹤晴; 王文刚; 严浩; 苏琦


    To reduce the error rate and application risk, as well as to increase the safety and quality of medical equipment in work, a quality control circle with PDCA method was performed in the study.Based on prac-tical situation analysis in hospitals and some methodological measures, we made perfections and improvement for maintenance species and items of medical equipment in hospital following the basic steps:group ringing, theme se-lecting, planning, situation confirming, goals setting and analyzing, countermeasures proposing, implementing and discussing, results confirming, standardization, reviewing and improving.Based on the quality control circle we performed, the maintenance and perfectness rate of medical equipment was improved, and ultimately a medical equipment maintenance and quality control system was established.%为降低医疗设备的故障率和应用风险,提高医疗设备的应用安全与质量,本文通过品管圈活动,采用PDCA方法,结合医院医疗设备的实际情况,按照组圈、主题选定、计划拟定、现状把握、目标设定、解析、对策拟定、对策实施与讨论、效果确认、标准化、检讨与改进等品管圈活动的基本步骤,对全院医疗设备维护种类和维护项目进行完善和改进,提高医疗设备的维护保养率和完好率,构建医疗设备维护保养和质量控制体系。

  14. 沼气工程上料设备应用现状及前景分析%Application Status and Prospect of biogas projects feeding equipment

    张小英; 贺丽琴


      China's biogas industry has developed rapidly the biogas project from the overall process, methane fermentation, gas production is tech-nically already quite mature, but feeding equipment on the biogas project ubiquitous liquid material through the ability of small, gas production is low, easy to wound easy to plug, the cost of shortcomings, it is in urgent need of a new equipment to replace.%  我国的沼气行业发展迅速,沼气工程从整体工艺、沼气发酵、产气技术上已经相当成熟,但目前沼气工程上料设备普遍存在液料通过能力小、产气率低、易缠绕易堵塞、成本高等缺点,故急需一种新型设备来替代。

  15. 智能移动设备在植物病理学教学中的应用%Application of Intelligent Mobile Equipment in Plant Pathology Teaching

    沈凤英; 吴伟刚; 吴成巍; 班秀萍


    Based on the investigation of plant pathology course in Hebei North University ,and adopt the method of the questionnaire for the class of 2011 students ,the implementation plan for the construction of teaching in‐formation platform based on digital equipment was put forward .The intelligent mobile equipment was applied to teaching ,should give full play to the function of the digital devices ,in order to meet the teaching need of the theory teaching ,practice teaching ,teaching management of plant pathology .%在对河北北方学院植物病理学课程调研的基础上,采用针对2011级学生的调查问卷的方法,提出基于数字化设备的教学信息化平台建设的实施方案,将智能移动设备应用于教学,充分发挥数字化设备的功能,以满足植物病理学理论教学、实践教学、教学管理的需要。

  16. Design and Application of Auto-continuous Steering Dough Press Equipment%自动折叠连续轧面机的设计与应用

    杨业栋; 闫金成; 胡冬泉; 柴松敏


    Research and develop an equipment which can continuous press dough.A series of circulate pressing process including delivering the dough into feeder using press roller,swerving of conveyor belts,fold-ing the dough using bi-directional interval folding belts and transferring of the dough back to feeder.The dough can form thousands to millions of layers of gluten structure through those processes.Practicals show that if dough processed using this equipment were used for steamed bread product,the quality is beyond the conven-tional products,even the hand-made product.%研制开发了一种可以对面团进行连续压延,使之形成均匀完善面筋网络的设备,并用于馒头生产提高产品品质。利用入口压辊滚压进面、转向输送带转向、正反运转输送带折叠、翻转压辊滚压转向、再通过输送带送回到入口压辊实现连续循环压延。应用表明本设备所加工的馒头品质优于普通机制及手工制作馒头。

  17. 便携式输油滤油设备的研制与应用%Development and Application of Portable Oil Delivery and Filtering Equipment

    任晓莉; 尚雪梅; 杜彦亭; 樊琛


    According to the cleanness of the oil in the hydraulic machinery problem and oil transportation problem, developed a portable oil transmission, multi-stage filtration equipment. Firstly the hydraulic circuit is designed , then integrated design is adopted for hydraulic system and the whole structure and the structure of each part are developed; Practice shows that the device was applied to production meets the requirement; At the same time, the equipment used as a teaching device applied to hydraulic course teaching has improved the teaching effect.%针对液压机械中油液的清洁问题及油液输送问题,研制了便携式油液输送、多级过滤设备.首先对该设备液压回路进行了设计;然后对液压系统采用集成化设计,并对该设备整体结构及相关零部件进行了研制;实践表明将该设备应用于生产中,满足使用要求;同时该设备可作为示教装置应用于液压课程的现场教学,提高了教学效果.

  18. On spin-rotation contribution to nuclear spin conversion in $C_{3v}$-symmetry molecules Application to $CH_{3}F$

    Guskov, K I


    The symmetrized contribution of $E$-type spin-rotation interaction to conversion between spin modifications of $E$- and $A_1$-types in molecules with ${\\rm C}_{3{\\rm v}}$-symmetry is considered. Using the high-$J$ descending of collisional broadening for accidental rotational resonances between these spin modifications, it was possible to co-ordinate the theoretical description of the conversion with (updated) experimental data for two carbon-substituted isotopes of fluoromethane. As a result, both $E$% -type spin-rotation constants are obtained. They are roughly one and a half times more than the corresponding constants for (deutero)methane.

  19. Slowly rotating Curzon-Chazy Metric

    Montero-Camacho, Paulo; Gutierrez-Chaves, Carlos


    A new rotation version of the Curzon-Chazy metric is found. This new metric was obtained by means of a perturbation method, in order to include slow rotation. The solution is then proved to fulfill the Einstein field equations using a REDUCE program. Furthermore, the applications of this new solution are discussed.

  20. Seismic SMHD -- Rotational Sensor Development and Deployment

    Laughlin, Darren [Applied Technology Associates; Pierson, Bob [Applied Technology Associates; Brune, Bob [Consultant


    The U.S. Department of Energy (DOE) and Applied Technology Associates (ATA) are funding development and deployment of a new generation of rotational sensors for validation of rotational seismic applications. The sensors employ Magnetohydrodynamic (MHD) principles with broadband response, high dynamic range, low noise floor, proven ruggedness, and high repeatability. This paper presents current status of sensor development and deployment opportunities.

  1. The rigid orthogonal Procrustes rotation problem

    Ten Berge, JMF


    The problem of rotating a matrix orthogonally to a best least squares fit with another matrix of the same order has a closed-form solution based on a singular value decomposition. The optimal rotation matrix is not necessarily rigid, but may also involve a reflection. In some applications, only rigi

  2. 33 CFR 149.535 - What are the requirements for rotating beacons on platforms?


    ... rotating beacons on platforms? 149.535 Section 149.535 Navigation and Navigable Waters COAST GUARD... EQUIPMENT Aids to Navigation Lights on Platforms § 149.535 What are the requirements for rotating beacons on... rotating beacon that distinguishes the deepwater port from other surrounding offshore structures....

  3. Application of Equipment Condition Monitoring and Fault Diagnosis%设备状态监测与故障诊断技术的应用

    蒋弦弋; 孙启阔; 殷丽娟; 唐晓军


    With the features of high running speed, high frequency of load change and low rolling temperature of roll piece, the high-speed wire rod mill device's main faults are focused on the bearing failure and gear failure of main driving equipments, which account for above 50 percent of total fault time. Taking a pre-finishing mill in a high-speed wire rod mill factory as a research object, its condition was monitored and fault diagnosis was made according to the obtained spectrum. The on-site practical inspection results were basically in consistent with the diagnosis results. It is indicated that to apply the technology of equipment condition monitoring and fault diagnosis to high-speed wire rod mill, the purpose of prevention is achieved, the over and less maintenance are effectively avoided. Not only equipment failures are reduced, but also the maintenance cost is reduced. The operating rate is improved greatly. It provides a reliable guarantee for smooth production.%高速线材厂轧机具有运转速度高、载荷变化频繁、所轧制轧件温度低的特点,设备的主要故障是主传动设备的轴承、齿轮失效故障,占总设备故障时间的50%以上.以某高速线材厂的一台预精轧机为研究对象,对其状态进行监测,并根据得到的频谱图进行故障诊断.现场实际检查结果与诊断结果基本一致,说明:将设备状态监测与故障诊断技术应用于高速线材轧机,能达到预防为主的目的,有效避免了过维修和欠维修,既减少了设备故障又降低了维修费用,大大提高了作业率,为生产的顺利进行提供了可靠的保障.

  4. Equipamentos de pulverização aérea e taxas de aplicação de fungicida na cultura do arroz irrigado Spraying equipment and rates of fungicide application in irrigated rice

    Tânia Bayer


    Full Text Available O controle eficiente de doenças na cultura do arroz irrigado depende da seleção correta do equipamento, da taxa de aplicação e da indicação certa do produto químico. O objetivo deste trabalho foi verificar a deposição de gotas na cultura do arroz comparando-se bicos hidráulicos no sistema convencional, eletrostático e atomizador rotativo de disco, em diferentes taxas de aplicação por via aérea; para tanto, foram estudadas a densidade e a penetração de gotas nos estratos médio e inferior, produtividade e rendimento de engenho do arroz. Os tratamentos avaliados foram: bico hidráulico 20 e 30 L ha-1, eletrostático 5 e 10 L ha-1 e atomizador rotativo de disco 6, 10 e 15 L ha-1. Não foram verificadas diferenças de produtividade e os equipamentos bico hidráulico 20 L ha-1 e atomizador rotativo de disco 15 L ha-1 proporcionaram maior rendimento de engenho. Maiores taxas de aplicação usando-se bicos hidráulicos e atomizador rotativo proporcionaram maior penetração e, consequentemente, também maior densidade de gotas nos dois estratos avaliados.The efficient chemical control in irrigated rice depends on the correct selection of equipment, rates of application and correct statement of the chemical product. The objective of this study was to evaluate the hydraulic nozzle equipment, electrostatic system and rotary-disk atomizer for aerial application of fungicides, relating to penetration and density of droplets with application rates and equipment in the middle and lower strata, in addition to the productivity and hulling yield in irrigated rice. The treatments were: nozzle hydraulic 20 and 30 L ha-1, electrostatic system 5 and 10 L ha-1, rotary-disk atomizer 6, 10 and 15 L ha-1. There was no difference in productivity and equipment hydraulic nozzle 20 L ha-1 and rotary-disk atomizer 15 L ha-1 showed a higher hulling yield. On average, higher rates had higher penetration and density in both the evaluated canopy strata.

  5. Equipment Operational Requirements

    Greenwalt, B; Henderer, B; Hibbard, W; Mercer, M


    The Iraq Department of Border Enforcement is rich in personnel, but poor in equipment. An effective border control system must include detection, discrimination, decision, tracking and interdiction, capture, identification, and disposition. An equipment solution that addresses only a part of this will not succeed, likewise equipment by itself is not the answer without considering the personnel and how they would employ the equipment. The solution should take advantage of the existing in-place system and address all of the critical functions. The solutions are envisioned as being implemented in a phased manner, where Solution 1 is followed by Solution 2 and eventually by Solution 3. This allows adequate time for training and gaining operational experience for successively more complex equipment. Detailed descriptions of the components follow the solution descriptions. Solution 1 - This solution is based on changes to CONOPs, and does not have a technology component. It consists of observers at the forts and annexes, forward patrols along the swamp edge, in depth patrols approximately 10 kilometers inland from the swamp, and checkpoints on major roads. Solution 2 - This solution adds a ground sensor array to the Solution 1 system. Solution 3 - This solution is based around installing a radar/video camera system on each fort. It employs the CONOPS from Solution 1, but uses minimal ground sensors deployed only in areas with poor radar/video camera coverage (such as canals and streams shielded by vegetation), or by roads covered by radar but outside the range of the radar associated cameras. This document provides broad operational requirements for major equipment components along with sufficient operational details to allow the technical community to identify potential hardware candidates. Continuing analysis will develop quantities required and more detailed tactics, techniques, and procedures.

  6. The Application of CNC Technology in Pipe Bending Equipment%多轴数控技术在弯管设备中的应用



    本文主要针对普及型数控弯管机的技术原理进行研究分析,成功将高性价比的嵌入式多轴数控系统应用于老旧故障弯管机,实现了机器控制系统的升级改造,为车间盘活了闲置设备,提升生产力。%This paper mainly studies and analyzes the technology of general CNC pipe bender. In order to rehab the idle equipment and increase the plant productivity, it successfully uses the multi-axis CNC system which has high per-formance price ratio for broken-downpipe bender. It is carried out to rebuild the control system of machine.

  7. 红外感应节电器在教室照明中的应用%Application of infrared illumination automatic control equipment in university classroom

    洪涛; 王力军


    某校教学楼宇和教室多,学生上课或者上自习没有固定教室,长明灯等浪费电导致电能损耗过大,为解决这一问题,引入了红外感应照明自动控制设备,通过制定相应控制策略,使得耗电量下降,而且减少了后期和电工管理成本.%The university teaching buildings and classrooms lamp waste electrical leads electric energy loss too large due to the students attend classes or study having no fixed classroom, in order to solve this problem, the paper introduces the infrared illumination automatic control equipment, through the development of the corresponding control strategy, decreasing power consumption and electrician management cost.

  8. Application of RFID Technology in the Medical Equipment Information Management%RFID技术在医疗设备信息化管理中的应用



    医疗设备信息化管理是医院管理的重要组成部分,直接关系到诊疗水平高低和医疗技术安全与否。本研究重点分析目前医疗设备信息化管理面临的问题,针对性地提出利用RFID技术予以解决,并指出相关注意事项。%This research focuses on the problems of medical equipment information management, and proposals how to solve these problems with RFID technology, and points out the possible risks we should pay attention.

  9. Refined finite element modelling for the vibration analysis of large rotating machines: Application to the gas turbine modular helium reactor power conversion unit

    Combescure, D.; Lazarus, A.


    This paper is aimed at presenting refined finite element modelling used for dynamic analysis of large rotating machines. The first part shows an equivalence between several levels of modelling: firstly, models made of beam elements and rigid disc with gyroscopic coupling representing the position of the rotating shaft in an inertial frame; secondly full three-dimensional (3D) or 3D shell models of the rotor and the blades represented in the rotating frame and finally two-dimensional (2D) Fourier model for both rotor and stator. Simple cases are studied to better understand the results given by analysis performed using a rotating frame and the equivalence with the standard calculations with beam elements. Complete analysis of rotating machines can be performed with models in the frames best adapted for each part of the structure. The effects of several defects are analysed and compared with this approach. In the last part of the paper, the modelling approach is applied to the analysis of the large rotating shaft part of the power conversion unit of the GT-MHR nuclear reactor.

  10. The development and application of DST testing equipment in CBM well%煤层气井专用DST测试设备研制及应用

    杨新辉; 刘昌益; 王彦龙; 黑磊


    Conventional DST tester is inadaptable to CBM well, in order to solve the problem and to avoid the wrong operation, through research on DST theory and analysis of the properties of coal reservoir, special DST equipment composed of external inflatable packer and downhole electromagnetic switching valve was developed, and was used to conduct DST in target seams. The result shows that the equipment is simple in structure, convenient for operation, the testing results are reliable, duration is short and cost is low, suitable to test seams in open well and cased well.%常规DST地层测试工具不适用于煤层气井。为了解决煤层气井DST测试中的难题,避免井下开关井困难和动作管柱误操作,通过对DST测试理论及煤储层特征的分析,研制出外膨胀式封隔器和井下电磁开关阀组成的煤层气井 DST 测试专用设备,并对目标煤层进行了 DST 测试。研究结果表明:煤层气井DST测试专用设备结构简单,操作方便;其测试结果可靠,工期短,成本低;适用于煤层裸眼测试和套管测试。

  11. Boundary layer control of rotating convection systems.

    King, Eric M; Stellmach, Stephan; Noir, Jerome; Hansen, Ulrich; Aurnou, Jonathan M


    Turbulent rotating convection controls many observed features of stars and planets, such as magnetic fields, atmospheric jets and emitted heat flux patterns. It has long been argued that the influence of rotation on turbulent convection dynamics is governed by the ratio of the relevant global-scale forces: the Coriolis force and the buoyancy force. Here, however, we present results from laboratory and numerical experiments which exhibit transitions between rotationally dominated and non-rotating behaviour that are not determined by this global force balance. Instead, the transition is controlled by the relative thicknesses of the thermal (non-rotating) and Ekman (rotating) boundary layers. We formulate a predictive description of the transition between the two regimes on the basis of the competition between these two boundary layers. This transition scaling theory unifies the disparate results of an extensive array of previous experiments, and is broadly applicable to natural convection systems.

  12. Temperature field simulation of laser homogenizing equipment

    Juanjuan WANG; Yunshan WANG; Fudong ZHU


    The laser homogenizing equipment was devised using the ring scanning principle. Its working principle is explained. A laser scanning ring facula is obtained when the laser beam goes through the equipment's optical system rotating with high-frequency. The scanning ring facula's mathematic model is established based on the temperature field's superposing principle. The ring facula's light intensity distribution and temperature distribution characteristics are achieved by simulating its temperature field. By studying the effect of parameters on the temperature field, the best parameters can be found. Results show that favorable temperature distribution characteristics can be attained by choosing appropriate parameters, and even the thermal effect can be realized by utilizing the circumference power compensating for the heat exchange lost in the horizontal direction. The uniform hardness layer and better process quality can be attained using the ring facula optimized for metal laser heat treatment.

  13. Liquid-Liquid Extraction Equipment

    Jack D. Law; Terry A. Todd


    Solvent extraction processing has demonstrated the ability to achieve high decontamination factors for uranium and plutonium while operating at high throughputs. Historical application of solvent extraction contacting equipment implies that for the HA cycle (primary separation of uranium and plutonium from fission products) the equipment of choice is pulse columns. This is likely due to relatively short residence times (as compared to mixer-settlers) and the ability of the columns to tolerate solids in the feed. Savannah River successfully operated the F-Canyon with centrifugal contactors in the HA cycle (which have shorter residence times than columns). All three contactors have been successfully deployed in uranium and plutonium purification cycles. Over the past 20 years, there has been significant development of centrifugal contactor designs and they have become very common for research and development applications. New reprocessing plants are being planned in Russia and China and the United States has done preliminary design studies on future reprocessing plants. The choice of contactors for all of these facilities is yet to be determined.

  14. Education Demonstration Equipment

    Nagy, A.; Lee, R. L.


    The General Atomics fusion education program ``Scientist in the Classroom" (SIC) now in its sixth year, uses scientists and engineers to present plasma as a state of matter to students in the classroom. Using hands-on equipment, students see how magnets, gas pressure changes, and different gases are turned into plasmas. A piston, sealed volume, and vacuum chamber illuminate ideal gas laws. Liquid nitrogen is used to explore thermodynamic temperature effects and changes in states of matter. Light bulbs are excited with a Tesla coil to ionize gases, thus becoming an inexpensive plasma devices and a plasma tube shows magnetic interactions with plasma. The demonstration equipment used in this program is built with simple designs and common commercial equipment keeping in mind a teacher's tight budget. The SIC program ( ˜25 school presentations per year) has become very popular and has acquired an enthusiastic group of regular teacher clientele requesting repeat visits. In addition, three very popular and successful ``Build-It" days, sponsored by the General Atomics Fusion Education Outreach Program, enables teachers to build and keep in their classroom some of this equipment. The demonstration devices will be presented along with their ``build-it" details.

  15. Shipboard and laboratory equipment

    Shyamprasad, M.; Ramaswamy, V.

    bed, and a digital clock and a transponder helped to locate the camera. Equipment for the analysis of the nodules such as x-ray fluorescence and atomic absorption spectrophotometers were installed aboard MV Skandi Surveyor and MV Fernella and MV G A...

  16. Lifetime of Mechanical Equipment

    Leland, K.


    The gas plant at Kaarstoe was built as part of the Statpipe gas transport system and went on stream in 1985. In 1993 another line was routed from the Sleipner field to carry condensate, and the plant was extended accordingly. Today heavy additional supply- and export lines are under construction, and the plant is extended more than ever. The main role of the factory is to separate the raw gas into commercial products and to pump or ship it to the markets. The site covers a large number of well-known mechanical equipment. This presentation deals with piping, mechanical and structural disciplines. The lifetime of mechanical equipment is often difficult to predict as it depends on many factors, and the subject is complex. Mechanical equipment has been kept in-house, which provides detailed knowledge of the stages from a new to a 14 years old plant. The production regularity has always been very high, as required. The standard of the equipment is well kept, support systems are efficient, and human improvisation is extremely valuable.

  17. Field application. Selective stimulation of reservoirs or perforated intervals with use of coiled tubing equipped with real-time data communication system in combination with straddle packer assemblies

    Oberascher, R.; Breimer, G. [GDF SUEZ E and P Deutschland GmbH, Lingen (Germany); Jonge, R.M. de [Baker Hughes (Netherlands)


    In two German gas wells a decline in production and wellhead pressures had been observed. Production logging data obtained by PLT surveys were evaluated, which showed that certain intervals within the reservoir section did not contribute, or showed a restricted contribution to the overall gas production. The restricted contribution was suspected to be caused by near-wellbore damage. To restore or enhance the production of the perforated intervals an acid treatment was considered in these wells in order to remove skin damage. To restore or enhance the production of the wells, an acid treatment of the perforated intervals was designed. For obtaining the required selective placement of the acid across the zones of interest, the use of coiled tubing (CT) in combination with a resettable straddle packer assembly was selected. The accuracy of the setting depth of the straddle packer was a critical issue for the execution of the well intervention operations. In order to obtain the required depth accuracy, the CT string was equipped with an intelligent CT communication system, which transfers real-time downhole data to surface. For the first time, a reservoir stimulation project was executed by combining CT equipped with a real-time data communication system (TeleCoil) and the Inflatable Straddle Acidizing Packer (ISAP) assembly. Inside the CT an encapsulated monoconductor cable was installed to transmit real-time data from the CT Bottom Hole Assembly (BHA) to surface. The BHA consists of a Casing Collar Locator (CCL) and downhole pressure and temperature gauges. Due to the protective jacket of the monoconductor cable, there are no restrictions in the use of different fluids in combination with the system. Information provided by the CCL monitoring tool ensures accurate depth correlations, whereas differential pressure measurements from the down-hole pressure gauges provide positive information about the setting and sealing conditions of the straddle packer assembly. The

  18. Rotator cuff repair - slideshow

    ... this page: // Rotator cuff repair - series—Normal anatomy To use the sharing ... to slide 4 out of 4 Overview The rotator cuff is a group of muscles and tendons that ...

  19. A model for developing job rotation schedules that eliminate sequential high workloads and minimize between-worker variability in cumulative daily workloads: Application to automotive assembly lines.

    Yoon, Sang-Young; Ko, Jeonghan; Jung, Myung-Chul


    The aim of study is to suggest a job rotation schedule by developing a mathematical model in order to reduce cumulative workload from the successive use of the same body region. Workload assessment using rapid entire body assessment (REBA) was performed for the model in three automotive assembly lines of chassis, trim, and finishing to identify which body part exposed to relatively high workloads at workstations. The workloads were incorporated to the model to develop a job rotation schedule. The proposed schedules prevent the exposure to high workloads successively on the same body region and minimized between-worker variance in cumulative daily workload. Whereas some of workers were successively assigned to high workload workstation under no job rotation and serial job rotation. This model would help to reduce the potential for work-related musculoskeletal disorders (WMSDs) without additional cost for engineering work, although it may need more computational time and relative complex job rotation sequences. Copyright © 2016 Elsevier Ltd and The Ergonomics Society. All rights reserved.

  20. New indication for a dichotomy in the interior structure of Uranus and Neptune from the application of modified shape and rotation data

    Nettelmann, N; Fortney, J J; Redmer, R


    Since the Voyager fly-bys of Uranus and Neptune, improved gravity field data have been derived from long-term observations of the planets' satellite motions, and modified shape and solid-body rotation periods were suggested. A faster rotation period (-40 min) for Uranus and a slower rotation period (+1h20) of Neptune compared to the Voyager data were found to minimize the dynamical heights and wind speeds. We apply the improved gravity data, the modified shape and rotation data, and the physical LM-R equation of state to compute adiabatic three-layer structure models, where rocks are confined to the core, and homogeneous thermal evolution models of Uranus and Neptune. We present the full range of structure models for both the Voyager and the modified shape and rotation data. In contrast to previous studies based solely on the Voyager data or on empirical EOS, we find that Uranus and Neptune may differ to an observationally significant level in their atmospheric heavy element mass fraction Z1 and nondimensiona...

  1. On Averaging Rotations

    Gramkow, Claus


    In this article two common approaches to averaging rotations are compared to a more advanced approach based on a Riemannian metric. Very offten the barycenter of the quaternions or matrices that represent the rotations are used as an estimate of the mean. These methods neglect that rotations belong...... approximations to the Riemannian metric, and that the subsequent corrections are inherient in the least squares estimation. Keywords: averaging rotations, Riemannian metric, matrix, quaternion...

  2. DeviceNet现场总线在MOCVD设备上的应用%Application of DeviceNet Field Bus in MOCVD Equipment

    肖慧; 林博奇


    以MOCVD设备为例,介绍一种基于DeviceNet现场总线标准,采用远程DeviceNet扫描仪SST-END-1-C2与流量控制器、压力控制器构成现场总线控制网络。给出了DeviceNet软件设计与控制实现。使用效果表明DeviceNet是基于CAN总线技术的一种低成本的通信链接,是一种低端网络系统,具有低成本、高效率、高可靠性的特点。%Taking MOCVD equipment for example, this paper introduced a kind of standard based on DeviceNet field bus. The field bus control network consisted of the remote DeviceNet scanner, SST-END-1-C2, flow controllers and pressure controllers. This paper gave the software design of DeviceNet and control implementation. The use effectiveness of DeviceNet shows that DeviceNet is a kind of low cost communication link based on CAN bus technology, a kind of low network system with low cost, high efficiency and high reliability characteristics.

  3. Prediction and analysis model of temperature and its application to a natural ventilation multi-span plastic greenhouse equipped with insect-proof screen

    LIU Shu-zhen; HE Yong; ZHANG Yu-bao; MIAO Xiang-wen


    The natural ventilation widely used in greenhouses has advantages of saving energy and reducing expense. In order to provide information for climate control of greenhouse, a model was developed to predict the variation of air temperature in the naturally ventilated greenhouse equipped with insect-proof screen. Roof ventilation and combined roof and sidewall ventilation were considered in the model. This model was validated against the results of experiments conducted in the greenhouse when the wind was parallel to the gutters. The model parameters were determined by the least squares method. In the used model, effects of wind speed and window opening height on the air temperature variation were analyzed. Comparison between two types of ventilation showed that there existed a necessary ventilation rate which results in air temperature decrease in natural ventilation under special climatic conditions. In our experiments when wind speed was less than 3.2ms-1, wind had a more gradual effect on greenhouse temperature for roof ventilation, compared with combined roof and sidewall ventilation, which had greater air temperature decrease than roof ventilation only.

  4. 精益生产在某涂装设备车间的应用%The Application of Lean Manufacturing in a Painting Equipment Workshop



    运用精益生产理论与方法对某起重机生产企业的涂装车间进行规划研究。在对该企业涂装车间现状及存在的问题进行分析的基础上,对现有的生产线平衡、喷漆工艺路线进行了一系列的改善。对企业实施精益生产后的结果进行了系统分析,对提高企业技术水平和适应当前的市场竞争有较强的指导意义。%Appling the lean manufacturing theory and method ,it presents the planning of painting workshop in a crane manufacturers .It analyzes present situation and existing problems in coating equipment workshop , puts for-ward some improvement ways on production lines balance and painting process route , summarizes the result of lean production realization .This has great guiding significance to improve the level of enterprise technology and adapt to the current market competition .

  5. Rotations with Rodrigues' Vector

    Pina, E.


    The rotational dynamics was studied from the point of view of Rodrigues' vector. This vector is defined here by its connection with other forms of parametrization of the rotation matrix. The rotation matrix was expressed in terms of this vector. The angular velocity was computed using the components of Rodrigues' vector as coordinates. It appears…

  6. On Averaging Rotations

    Gramkow, Claus


    In this paper two common approaches to averaging rotations are compared to a more advanced approach based on a Riemannian metric. Very often the barycenter of the quaternions or matrices that represent the rotations are used as an estimate of the mean. These methods neglect that rotations belong...

  7. 紫外成像检测技术在高压电力设备带电检测中的应用%Application of Ultraviolet Imaging Detection Technology in Electrification Detection for High Voltage Power Equipments

    钱金菊; 王锐; 黄振; 彭向阳; 林茂


    Combining vast data information obtained from ultraviolet imaging detection in present years,this paper discusses characteris-tics of ultraviolet imaging detection technology in fault diagnosis for power system.Proceeding from basic principles of ultraviolet ima-ging detection technology,it analyzes main factors affecting ultraviolet imaging detection results and states operational approach of using ultraviolet imaging detection technology to detect corona discharge defect of high voltage power equipment.It also analyzes main rea-sons for causing corona discharge by combining actual cases of ultraviolet imaging detection for power transmission and transformation equipments and proposes corresponding overhaul suggestions.Actual application cases indicate that this method is able to effectively complete electrification detection for high voltage power equipments.%结合近年来获得的大量紫外成像检测诊断的数据资料,探讨了紫外成像检测技术在电力系统故障诊断应用中的特点。基于此,从紫外成像检测技术的基本原理出发,分析影响紫外成像检测结果的主要因素,并阐述了利用紫外成像检测技术检测高压电力设备电晕放电缺陷的操作方法;结合输变电电力设备紫外成像检测的实际案例,分析了引起设备电晕放电的主要原因,并给出相应的检修建议。实际应用案例表明该方法可有效地对高压电力设备进行带电检测。

  8. 超效率数据包络分析模型在装备维修保障方案评估中的应用%Application of SE-DEA model on the Equipment Maintenance Support Scheme Evaluation

    王秀华; 李忠光; 何志桂


    针对传统数据包络分析方法在方案评估中不能对多个有效决策单元进一步排序的问题,采用超效率数据包络分析对装备维修保障方案进行评估。分析构建了评估指标体系,建立了基于超效率数据包络分析的装备维修保障方案评估模型;运用MATLAB编程,得到各方案的目标函数值θ*,依据θ*值大小对装备维修保障方案的优劣进行排序,并对无效方案提出改进办法。实际应用表明了方法的有效性。%To tackle the issue that traditional data envelopment analysis cannot further sort multi-ple effective decision units in the scheme evaluation,the paper conducts evaluation on the equipment maintenance support plan with super efficiency data envelopment analysis (SE-DEA).The analysis is used to build up an evaluation indicator system and then an equipment maintenance support scheme based on super efficiency data envelopment analysis;it draws the obj ective function value of each scheme by MATLAB programming. The paper also sorts the equipment maintenance support schemes according to the advantages and disadvantages in terms of value and proposes improvement approaches for ineffective schemes.The practical applications demonstrate the effectiveness of the ap-proaches.

  9. Instabilities of MHD Waves Produced by Coupling of Rotation and Gradient of Magnetic Field and its Possible Application in the Galactic Central Region

    Das, Ipsita


    An analysis of MHD wave propagating in a gravitating and rotating medium permeated by non-uniform magnetic field has been done. It has been found that the Gradient of Magnetic Field when coupled with Rotation becomes capable to generate few instabilities (Temporal or Spatial) leading to the damping or amplification of MHD waves. The Jean's criterion is not sufficient for stability always. Rather, the waves will suffer instability unless their wave length (frequency) is less (greater) than certain critical values. Otherwise, those will smoothly propagate outward. Out of different scenarioes depending on the direction of the magnetic field, its gradient, rotation and wave propagation three important Special Cases have been discussed and different stability criteria have been derived. Finally, using the above theory we have obtained the stability/instability criteria for the waves moving parallel and perpendicular to the galactic plane in the Core and Periphery of the Central Region of Galaxy (C.R.G.) due to the...

  10. Rotation speed measurement for turbine governor: torsion filtering by using Kalman filter; Mesure de la vitesse de rotation d`un groupe turboalternateur: application de la theorie de kalman au probleme du filtrage des oscillations torsionnelles

    Houry, M.P.; Bourles, H.


    The rotation speed of a turbogenerator is disturbed by its shaft torsion. Obtaining a filtered measure of this speed is a problem of a great practical importance for turbine governor. A good filtering of this speed must meet two requirements: it must cut frequencies of the shaft torsion oscillation and it must not reduce or delay the signal in the pass-band, i.e. at lower frequencies. At Electricite de France, the speed measure is used to set in motion the fast valving system as quickly as possible, after a short circuit close to the unit or rather an islanding. It is difficult to satisfy these two requirements by using conventional filtering methods. The standard solution consists in a first order filter: at Electricite de France, its time constant is equal to 80 ms. We have decided to improve this filtering by designing a new filter which cuts the frequencies of the shaft torsion oscillation without reducing the bandwidth to the speed measure. If one uses conventional methods to obtain a band stop filter, it is easy to obtain the desired magnitude but not a phase near zero in the whole pass-band. Therefore, we have chosen to design the filter by using Kalman`a theory. The measurement noise is modeled as a colored one, generated by a very lightly damped system driven by a while noise. The resulting Kalman filter is an effective band stop filter, whose phase nicely remains near zero in the whole pass-band. The digital simulations we made and the tests we carried out with the Electricite de France Micro Network laboratory show the advantages of the rotation speed filter we designed using Kalman`s theory. With the proposed filter, the speed measure filtering is better in terms of reduction and phase shift. the result is that there are less untimely solicitations of the fast valving system. Consequently, this device improves the power systems stability by minimizing the risks of deep perturbations due to a temporary lack of generation and the risks of under-speed loss

  11. 物联网技术在输变电设备状态监测中的应用%Application of the internet of things technology in power transmission equipments condition monitoring

    曹一家; 何杰; 黄小庆; 张志丹


    Smart grid is one of the most important application fields in the internet of things (IOT). On the basis of integrated analysis of basic concept and research hotspot of IOT, the paper preliminary studies the application prospects of IOT in on-line monitoring of power transmission and distribution equipment, electric vehicle and smart home. Then, with intelligent monitoring, condition assessment and life cycle management of transmission and distribution equipment as background, architecture of the internet of power transmission and distribution equipment is proposed, including intelligent perception layer, data communication layer, information integration layer, smart application layer. Key technologies, such as integrated intelligent monitoring device, coding and labeling system, communication technology, panoramic information modeling, information processing, life cycle management, security problems and standardization, are further discussed in detail. And then research directions and existing problems of these technologies are finally given.%智能电网是物联网应用的最重要领域之一.在分析物联网概念及研究热点的基础上,初步探讨物联网在智能电网中输变电设备在线监测、电动汽车和智能家居的应用前景,以输变电设备智能监测、状态评估和全寿命周期管理为背景,提出包括智能感知层、数据通信层、信息整合层和智能应用层的输变电设备物联网体系架构,并详细探讨体系架构中所涉及到的若干关键技术,主要包括一体化智能监测装置、编码和标识体系、通信技术、全景信息建模、信息处理技术、全寿命周期管理、安全威胁与措施以及标准化,指出这些技术的研究方向和存在问题.


    S. L. Rovin


    Full Text Available This article presents an automated cupola complex, developed by scientific-production enterprise «Technolit» together with GSTU named after P. O. Sukhoi, launched in the spring of 2015 at the plant «Stroiex» in the city of Chelyabinsk (the Russian Federation. The old cupolas (open type have been replaced by the new cupolas of the closed type, equipped with automatic control and management system and multistage wet gas treatment system. Cupolas are equipped with systems of post-combustion gases and the batch charging, the separate systems of air blast, systems of sludge removal and recirculation of water, the slag granulation installations, mechanized cleaning of cupola furnace and automatic safety system. These activities allowed the company to increase production and improve the quality of cast iron, reduce the coke consumption by 20% and reducing emissions of pollutants into the atmosphere almost 30 times.

  13. A user`s perspective on the selection and application of equipment and techniques to deal with harmonics and other power quality issues

    Stebbins, W.L. [Hoechst Celanese Corp., Rock Hill, SC (United States)


    The proliferation of personal computers (PCs), programmable logic controllers (PLCs), energy management systems (EMS), microprocessor-based instrumentation, and other state-of-the-art electronic devices in an industrial plant setting has prompted a new awareness of the impact of power quality issues on the reliability of these systems and the ability to perform the desired tasks in an interruption-free manner. While it is common to consider the local power company as the source of all power quality problems, investigation has revealed that in many cases a significant portion originate in the plant itself from adjustable speed dries (ASDs), heater and lighting controls, copy machines, and even the switching power supplies of the computers and controllers themselves. Two of the greatest causes of harmonic distortion in today`s power systems are diode rectifiers and SCR switching devices. This distortion can be created by large solid state power supplies for AC and DC drive motors, small solid state controllers, and instrumentation and computer power supplies. Historically, most electrical motor and lighting loads were linear in nature, where current and voltage vary directly together. Electronic devices are now becoming a larger part of today`s total system load and with their non-linear nature, have become a large enough factor to have serious consequences in power distribution systems. Overheated neutral conductors, failed transformers, malfunctioning generators, false tripping of circuit breakers, and motor burnouts have been experienced, even though loads were apparently well within equipment ratings. Established maintenance procedures must be revised to reflect new techniques for dealing with these power quality issues.

  14. A user`s perspective on the selection and application of equipment and techniques to deal with harmonics and other power quality issues

    Stebbins, W.L.


    The proliferation of personal computers (PCs), programmable logic controllers (PLCs), energy management systems (EMS), microprocessor-based instrumentation, and other state-of-the-art electronic devices in an industrial plant setting has prompted a new awareness of the impact of power quality issues on the reliability of these systems and the ability to perform the desired tasks in an interruption-free manner. While it is common to consider the local power company as the source of all power quality problems, investigation has revealed that in many cases a significant portion originate in the plant itself from adjustable speed drives (ASDs), heater and lighting controls, copy machines, and even the switching power supplies of the computers and controllers themselves. Two of the greatest causes of harmonic distortion in today`s power systems are diode rectifiers and SCR switching devices. This distortion can be created by large solid state power supplies for AC and DC drive motors, small solid state controllers, and instrumentation and computer power supplies. Historically, most electrical motor and lighting loads were linear in nature, where current and voltage vary directly together. Electronic devices are now becoming a larger part of today`s total system load and with their non-linear nature, have become a large enough factor to have serious consequences in power distribution systems. Overheated neutral conductors, failed transformers, malfunctioning generators, false tripping of circuit breakers, and motor burnouts have been experienced, even though loads were apparently well within equipment ratings. Established maintenance procedures must be revised to reflect new techniques for dealing with these power quality issues.

  15. The Application of Flexible Machining Equipment and Robo-rail in Knuckle Machining Automatic Line%柔性加工设备及轨道机器人在转向节加工自动线中的运用

    郑金来; 熊昌秀; 丁海方; 戴启峰


    Present application of flexible machining equipment and Robo-rail in knuckle machining automatic line, which is a solution for traditional knuckle processing problem such as long processing cycle, unstable precision, labor intensity, low production efficiency. Come up with adding flexible machining equipment and Robo-rail in knuckle machining automatic line. Optimized automatic line parts can produce stable quality parts, improve production efficiency significantly, save investment and operation cost, make good economic benefits, which has been verified by use of production line.%介绍柔性加工设备及轨道机器人在转向节加工自动线中的运用,解决了传统转向节加工中加工周期长,精度不稳定,劳动强度大,生产效率低等问题。提出了在加工自动线中增加柔性加工设备和轨道机器人。生产线的投产使用验证了优化后的自动线零件加工质量稳定,生产效率显著提高,节约了投资和运行成本,取得了好的经济效益。

  16. 浅谈《化学反应过程与设备》的多媒体教学%The Application of Multimedia Technology in the Teaching of Chemical Reaction Process and Equipment

    胡春玲; 朱开宪


    The Chemical Reaction Process and Equipment was the main course of chemical engineering professional.The advantages,with introduction of multimedia technology in teaching,turning abstract contents to intuitive,and making theory and practice close integration,were described,which can meet the requirements of training new model chemical personnel.Finally,the broad prospects of this application in chemical reaction process and equipment teaching were specified.%化学反应过程与设备是化工类专业的主要课程,针对该学科的特点及学生的学习状态阐述了在教学中引入多媒体技术具有化抽象为直观、理论与实践紧密结合的优点,能够适应对化工类人才培养模式对新型化工人才的要求,多媒体技术在本课程教学中具有广阔的应用前景。

  17. Analysis of Research and Application of Solar Greenhouse Technology and Equipment at Home and Abroad%国内外日光温室技术装备的研究与应用分析



    Solar greenhouse is the unique type of a greenhouse in north China;it is a major component of facilities agriculture industry in our country. This paper examines the present state of research on and application of sunlight greenhouse technology and equipment both at home and abroad, analyzes the problems existing in the development of solar greenhouse technology and equipment in China, and defines the development direction so as to promote the sustained and rapid development of solar greenhouse industry in China.%日光温室是我国北方地区独有的一种温室类型,是我国设施农业产业中的主体。阐述国内外日光温室技术装备研究与应用现状,借鉴国外发达国家经验,分析我国日光温室技术装备发展中存在的问题,并指出发展方向,为促进我国日光温室产业持续快速发展提供参考。

  18. 基于物联网技术的输变电设备模型的研究%Research and Application of Power Transmission and Transformation Equipment Based on CIM Model and Internet of Thing



    输变电设备CIM模型构建是输变电物联网关键技术实施的基础,关系着设备智能管理与其他高级应用的数据交互与共享、业务的变更与增加。本文研究了IEC 61850和基于IEC 61970的CIM模型特点及使用范围,对两种模型统一与映射方法进行了探讨。%Power transmission and transformation equipment CIM model building is a key technology to implement the basis of power transmission and transformation of things, the relationship between the equipment of intelligent management and other advanced applications, business change and increase interaction and sharing data After studied IEC 61850 and IEC 61970 series standard based on IEC 61850 and IEC 61970 CIM model characteristics and use scope, the uniifed two models and mapping methods are discussed in this paper.

  19. Soviet equipment flies in

    CERN PhotoLab


    End of February 1977 a Soviet Ilyushin-76 heavy freight aircraft landed at Cointrin airport having on board fifty large wire proprtional chambers and associated apparatus, together weighing 10 tons, supplied by the Joint Institute for Nuclear Research, Dubna, USSR. The equipment was for the CERN- Dubna-Munich-Saclay experiment NA4 on deep inelastic muon scattering being set up in the North Area of SPS. See Weekly Bulletin 11/78.

  20. Energy to the Edge (E2E) Equipment Assessment U.S. Army Rapid Equipping Force


    USCENTCOM 12 TOC UPS, REAP, TALS USPACOM 1 11 Power Surety for NetZero Camp (Lite Camps) TS & HOA USSOUTHCOM 3 Power Surety for NetZero Camp (Lite Camps...Deployment AOR LOCATION APPLICATIONS SUPPORTED CAPABILITIES Lite Camp USCENTCOM 10* Mobile Kitchen, Dining Building , Mortar Fire Control USSOUTHCOM Power...Surety for NetZero Camp (Lite Camps) * six awaiting installation Appendixes U.S. Army Rapid Equipping Force | 35 Demonstrated Capabilities Equipment

  1. Equipment Obsolescence Management Program

    Redmond, J.


    Nuclear Power Plant (NPP) Operators are challenged with securing reliable supply channels for safety related equipment due to equipment obsolescence. Many Original Equipment Manufacturers (OEMs) have terminated production of spare parts and product life-cycle support. The average component life cycles are much shorter than the NPP design life, which means that replacement components and parts for the original NPP systems are not available for the complete design life of the NPPs. The lack or scarcity of replacement parts adversely affects plant reliability and ultimately the profitability of the affected NPPs. This problem is further compounded when NPPs pursue license renewal and approval for plant-life extension. A reliable and predictable supply of replacement co components is necessary for NPPs to remain economically competitive and meet regulatory requirements and guidelines. Electrical and I and C components, in particular, have short product life cycles and obsolescence issues must be managed pro actively and not reactively in order to mitigate the risk to the NPP to ensure reliable and economic NPP operation. (Author)

  2. Equipment for gas conversion

    Tabata, K.; Matsumoto, I.


    Equipment is proposed for vapor conversion of hydrocarbons (Uv), possibly in a mixture with air, in order to produce an inorganic gas, which chiefly consists of H2 and COx. It consists of a reaction pipe made of an inorganic refractory ceramic and equipped along the wall circumference with heaters. The reaction pipe is filled with a combined, multilayer catalyst (Kt) carrier, made of gamma-A1203 which in the transverse cross section has a multipore reticular or fibrous structure. Replacement of the traditional steel (St) materials for the walls of the reaction pipe with ceramic materials reduces the output of the hydrocarbon which contaminates the surface (Pv) of the catalyst; the use of a multilayer carrier for the catalyst made of gamma-A1203 with a porous reticular or fibrous structure reduces the pressure losses in the reactor and facilitates the replacement of the spent catalyst. The equipment is designed for vapor conversion of natural gas, C3H8, and vapors of kerosene, naphtha and so on.

  3. Predictors of human rotation.

    Stochl, Jan; Croudace, Tim


    Why some humans prefer to rotate clockwise rather than anticlockwise is not well understood. This study aims to identify the predictors of the preferred rotation direction in humans. The variables hypothesised to influence rotation preference include handedness, footedness, sex, brain hemisphere lateralisation, and the Coriolis effect (which results from geospatial location on the Earth). An online questionnaire allowed us to analyse data from 1526 respondents in 97 countries. Factor analysis showed that the direction of rotation should be studied separately for local and global movements. Handedness, footedness, and the item hypothesised to measure brain hemisphere lateralisation are predictors of rotation direction for both global and local movements. Sex is a predictor of the direction of global rotation movements but not local ones, and both sexes tend to rotate clockwise. Geospatial location does not predict the preferred direction of rotation. Our study confirms previous findings concerning the influence of handedness, footedness, and sex on human rotation; our study also provides new insight into the underlying structure of human rotation movements and excludes the Coriolis effect as a predictor of rotation.

  4. Equipment and techniques for carbon nanotube research

    Vorob' eva, Alla I [Belarusian State University of Informatics and Radioelectronics, Minsk (Belarus)


    Many nanotube applications, in particular those in nanoelectronic systems, require nanotubes with strictly defined electrophysical parameters. This paper reviews equipment and techniques for studying and measuring the most important of these parameters. Theoretical and experimental parameter values obtained from different techniques are compared. Ways of preparing nanotube-containing samples for investigation and measurement purposes are examined. (instruments and methods of investigation)

  5. The spatial rotator

    Rasmusson, Allan; Hahn, Ute; Larsen, Jytte Overgaard


    to identify the specific tissue region under study. In order to use the spatial rotator in practice, however, it is necessary to be able to identify intersection points between cell boundaries and test rays in a series of parallel focal planes, also at the peripheral parts of the cell boundaries. In cases......This paper presents a new local volume estimator, the spatial rotator, which is based on measurements on a virtual 3D probe, using computer assisted microscopy. The basic design of the probe builds upon the rotator principle which requires only a few manual intersection markings, thus making...... the spatial rotator fast to use. Since a 3D probe is involved, it is expected that the spatial rotator will be more efficient than the the nucleator and the planar rotator, which are based on measurements in a single plane. An extensive simulation study shows that the spatial rotator may be more efficient...

  6. Experimental study of the application of micro-PIV on the flow characteristics detection of micro-gap rotational flow field

    Tang, Fei; Wang, Chunze; Shi, Yupeng; Wang, Xiaohao


    For a micro-gap rotational flow field with a large horizontal extent, tiny gap and fast flow velocity, the two-dimensional images shot by the micro-scale Particle ImageVelocimetry(Micro-PIV) technique are not sufficient for the study of local or whole flow characteristics. In this paper, by establishing a test bench of a rotational flow field with the functions of driving, positioning, adjustment and sensing, all the local states of the micro-gap rotational flow field can be obtained by horizontally moving the rotating axis to observe point by point. While measuring some local flow fields, two-dimensional pictures are taken by adjusting the focusing height of the objective lens, and then superposed and interpolated according to their shooting order to obtain a quasi-three-dimensional distribution image of the local flow fields, thus obtaining the flow condition of the vertical section of the flow field. The position of the focusing plane and mutual distance are adjusted to realize the measurement of wall shear force in the flow field, providing a feasible reference method for detecting the rheological property of the gap flow field and the effect of surface drag reduction.

  7. Experimental study of the application of micro-PIV on the flow characteristics detection of micro-gap rotational flow field

    Fei Tang


    Full Text Available For a micro-gap rotational flow field with a large horizontal extent, tiny gap and fast flow velocity, the two-dimensional images shot by the micro-scale Particle ImageVelocimetry(Micro-PIV technique are not sufficient for the study of local or whole flow characteristics. In this paper, by establishing a test bench of a rotational flow field with the functions of driving, positioning, adjustment and sensing, all the local states of the micro-gap rotational flow field can be obtained by horizontally moving the rotating axis to observe point by point. While measuring some local flow fields, two-dimensional pictures are taken by adjusting the focusing height of the objective lens, and then superposed and interpolated according to their shooting order to obtain a quasi-three-dimensional distribution image of the local flow fields, thus obtaining the flow condition of the vertical section of the flow field. The position of the focusing plane and mutual distance are adjusted to realize the measurement of wall shear force in the flow field, providing a feasible reference method for detecting the rheological property of the gap flow field and the effect of surface drag reduction.

  8. Development of a Equipment to Measure Gas Transport Properties: Application to Study Mixtures of Candidates Buffer Materials for Low-Medium Level Waste Repositories

    Martin, P.L.; Barcala, J.M.; Oller, J.C.


    This report describes the design, the construction and a testing of a system set-up for the measurement of gas transport, created at CIEMAT, and its application to study mixtures of candidate buffer materials for Low-Medium Level Waste Repertories. The measure of the gas flows is carried on by mass flow meters of several ranges, white the pressure of the applied within the sample is controlled. Two National l Instrument's acquisition system that permits the control and recording of the parameters. A specific application developed for this test, with National Instruments LabWIEW DSC, permits to mange the system. A client interface lets to follow the experiment course from a remote location through Internet. (Author) 21 refs.

  9. Development of a new type of high pressure calorimetric cell, mechanically agitated and equipped with a dynamic pressure control system: Application to the characterization of gas hydrates

    Plantier, F., E-mail:; Missima, D.; Torré, J.-P. [Univ Pau and Pays Adour, CNRS, TOTAL - UMR 5150 – LFC-R - Laboratoire des Fluides Complexes et leurs Réservoirs, BP 1155 – PAU, F-64013 (France); Marlin, L. [Univ Pau and Pays Adour, IPRA FR2952 - Fédération de Recherche- Atelier de Physique Générale, BP 1155 – PAU, F-64013 (France)


    A novel prototype of calorimetric cell has been developed allowing experiments under pressure with an in situ agitation system and a dynamic control of the pressure inside the cell. The use of such a system opens a wide range of potential practical applications for determining properties of complex fluids in both pressurized and agitated conditions. The technical details of this prototype and its calibration procedure are described, and an application devoted to the determination of phase equilibrium and phase change enthalpy of gas hydrates is presented. Our results, obtained with a good precision and reproducibility, were found in fairly good agreement with those found in literature, illustrate the various interests to use this novel apparatus.

  10. Review of CNPC Petroleum Equipment Manufacturing Industry during the Tenth Five-Year Plan Period

    Liu Bingyi


    @@ Major problems in petroleum equipment manufacturing Difference of petroleum equipment manufacturing technology between China and foreign countries (1) Drilling equipment. The gap between Chinese drilling equipment and that of other countries is still large in its quality and the application of high-level technology.

  11. Application of instrument intelligent equipment management system in air separation plant%仪表智能设备管理系统在空分设备中的应用



    简介仪表智能设备管理系统,介绍35000m。/h空分设备的控制系统网络结构,以及仪表智能设备管理系统在其中的结构和实现功能,阐述仪表智能设备管理系统在空分行业中的应用前景。%Here, the net structure of control equipment management system, its structure, industry are described. system for 35000 ma/h air separation plant, instrument intelligent realizable functions, and prospects of its application in air separation

  12. Application maintenance outsourcing of training center's equipment%实训中心数控机床社会化维修模式的探索与实践



    The main task of CNC training center is to provide a workplace, where students can learn and practise how to applicate CNC machine. Outsourcing equipment maintenance can keep machine working normal so that the teaching can carry out smoothly. And it also can reduce maintenance costs and human resource costs.%数控实训基地是训练学生数控技术应用能力的实践场所.采用专业化、市场化的设备维修保养模式,可以保持数控机床良好运行状态,保证实践教学顺利进行,又可以降低设备的维修成本和人力资源成本.

  13. Strategy for conformity of non-standard cryogenic equipment

    CERN. Geneva


    CERN as an intergovernmental organization establishes its own Safety Rules as necessary for its proper functioning. In particular, the CERN General Safety Instruction for cryogenic equipment requires that cryogenic pressure equipment at CERN shall comply with the European Pressure Equipment Directive (PED). However, due to the particular features of some of the cryogenic equipment required for the accelerators, as well as the existence of international collaborations with in-kind contributions from non-EU countries, full compliance with the PED may not always be achieved. This situation is foreseen in the Safety Rules, where CERN HSE will define the Safety requirements applicable to such equipment as well as any eventual additional compensatory measure as to ensure a commensurate level of Safety for our pressure equipment. Where compliance with PED may not be achieved, CERN HSE will become the de facto Notified Body and therefore be in charge of the assessment of the conformity of the equipment to the applica...

  14. Practical application of the benchmarking technique to increase reliability and efficiency of power installations and main heat-mechanic equipment of thermal power plants

    Rimov, A. A.; Chukanova, T. I.; Trofimov, Yu. V.


    facilitating the analysis of the benchmarking results permitting to represent the quality loss of this power installation in the form of the difference between the actual value of the key indicator or comparison indicator and the best quartile of the existing distribution. The uncertainty of the obtained values of the quality loss indicators was evaluated by transforming the standard uncertainties of the input values into the expanded uncertainties of the output values with the confidence level of 95%. The efficiency of the technique is demonstrated in terms of benchmarking of the main thermal and mechanical equipment of the extraction power-generating units T-250 and power installations of the thermal power plants with the main steam pressure 130 atm.

  15. Rotation speed measurement for turbine governor: torsion filtering by using Kalman filter; Mesure de la vitesse de rotation d`un groupe turboalternateur: application de la theorie de Kalman au filtrage des oscillations torsionnelles

    Houry, M.P.; Bourles, H.


    The rotation speed of a turbogenerator is disturbed by its shaft torsion. Obtaining a filtered measure of this sped a problem of a great practical importance for turbine governor. A good filtering of this speed must meet two requirements: it must cut frequencies of the shaft torsion oscillation and it must not reduce or delay the signal in the pass-band. i.e. at lower frequencies. At Electricite de France, the speed measure is used to set in motion the fast valving system as quickly as possible, after a short circuit close to the unit (to contribute to the stability) or after an islanding (to quickly reach a balance with the house load). It is difficult to satisfy these two requirements by using conventional filtering methods. The standard solution consists in a first order filter: at Electricite de France, its time constant is equal to 80 ms; We have decided to improve this filtering by designing a new filter which cuts the frequencies of the shaft torsion oscillation without reducing the bandwidth of the speed measure. If one uses conventional methods to obtain a band-stop filter (for instance a Butterworth, a Chebyshev or an elliptic band-stop filter),it is easy to obtain the desired magnitude but not a phase near zero in the whole pass-band. Therefore, we have chosen to design the filter by using Kalman`s theory. The measurement noise is modeled as a colored one, generated by a very lightly damped system driven by a white noise. The resulting Kalman filter is an effective band-stop filter, whose phase nicely remains near zero in the whole pass-band. (authors). 13 refs., 12 figs.

  16. Vibration Test Requirements and Application Analysis of Civil Aircraft Equipment (Ⅱ) Vibration Test Requirements of Civil Fixed-wing Aircraft Equipment in DO 160F/G%民用飞机机载设备振动试验要求和应用分析(二)DO 160F/G民用固定翼飞机机载设备振动试验要求

    祝耀昌; 李韻; 徐俊; 王星皓


    阐述了民用飞机机载设备振动环境的特点和振动试验分类,归纳和汇总了DO 160 F/G中的各类民用飞机机载设备的振动试验要求,包括振动谱、振动量值和试验持续时间等,并进行了分析和说明,以便于查阅和使用。最后对民用飞机机载设备振动试验方法的应用进行了概括,介绍了民用固定翼飞机的机载设备振动试验要求,按设备在机上的区域不同进行分类,详细地对比说明各个位置上设备的振动试验要求;介绍了民用直升机的机载设备振动试验要求。%ABSTRACT:The paper set forth the characteristics of the vibration environment of civil aircraft equipment and the classifica-tion of vibration tests. The vibration test requirements of various civil aircraft equipment in DO 160 F/G were concluded and summarized, including vibration spectrum, magnitude and duration, and then were analyzed and explained accordingly, so as to facilitate the reference and application thereof. At last, the application of vibration test method for civil aircraft equipment was generalized. Vibration test requirements of civil fixed-wing aircraft equipment was described and classified according to the different sections of the equipment in the aircraft. The vibration test requirements of the equipment at each position were de-scribed in details by contrast; and the vibration test requirements of the airborne equipment of civil helicopters was presented.

  17. 医疗设备质量检测及风险评估软件的设计与应用%Design and application of a software in medical equipment detecting and risk assessment

    杨俊; 潘其明; 金伟


    Objective: Regulations and requirements of application security and quality assurance will merged into software module design, and then guide and develop the medical equipment detect and risk assessment. Methods: We compiled software by C/S architecture, SQL Server 2000 database, Delphi 7 and windows operating system. Results: It could provide guarantee by the software which is integrated by maintenance, measurement and quality control. Conclusion: The development and application of medical equipment information management system promote the management, construction and improve the security.%目的:将医疗设备应用安全和质量保证有关规定和要求,融入软件系统模块设计中,以此来指导和开展医疗设备质量检测和风险评估工作.方法:采用C/S体系结构,以MS SQL Server 2000作为后台数据库,采用Delphi7作为客户端开发工具,以Windows系统作为操作平台,编制医疗设备质量检测及风险评估软件.结果:将维修、计量以及质量检测整合成为一个软件平台,使管理更加规范.为医院的医疗设备质量检测及风险评估提供了有力的保障.结论:通过对医院医疗仪器设备信息管理系统的开发与应用,推进了医疗设备管理的规范化和标准化,加快了医院信息化建设的步伐,提高了医疗设备的安全性.

  18. Folding retractable protective dome for space vehicle equipment

    Clark, Paul R. (Inventor); Messinger, Ross H. (Inventor)


    A folding, retractable dome for protecting a feature, such as a docking mechanism, a hatch or other equipment at an exterior surface of a space vehicle, includes a plurality of arcuate ribs, each having opposite ends respectively pinioned at opposite sides of the feature at the surface of the vehicle for rotational movement about an axis of rotation extending through the opposite ends and through an arcuate path of revolution extending over the feature, and a flexible cover attached to each of the ribs such that, in a deployed configuration of the dome, in which adjacent ribs are rotated apart from each other at a maximum relative angle therebetween, the cover is stretched generally tangentially between the adjacent ribs to form a generally arcuate shield over the feature, and in a retracted position of the dome, in which adjacent ribs are rotated together at a minimum relative angle therebetween, the cover is collapsed to define folded pleats between the adjacent ribs.

  19. Agro-ecological zonation, characterization and optimization of rice-based cropping systems : proceedings of the SARP applications workshop on the application programs 'Agro-ecological zonation and characterzation' and 'Crop rotation optimization', held at the International Rice Research Institute (IRRI), Los Banos, Philippines, 18 April - 6 May, 1994

    Lansigan, F.P.; Bouman, B.A.M.; Laar, van H.H.


    In this volume of the SARP research proceedings two 'Application Programs' are introduced. Five papers are presented on agro-ecological zonation and characterization, dealing with rainfall mapping, GIS and soil data base investigation. Nine papers are presented on crop rotation optimization, having

  20. Heat recovery equipment for engines

    Segaser, C.L.


    The recovery and use of waste heat from prime movers is an important consideration for evaluating an on-site power system, since it is the basic factor that makes possible a substantial increase in fuel-use efficiency. The equipment usually employed to recover waste heat can be categorized as: (a) shell-and-tube type heat exchangers, (b) radiator-type heat exchangers, (c) exhaust gas boilers for the generation of pressurized hot water and/or steam, (d) steam separators, and (e) combined packaged units for ebulliently cooled internal combustion piston engines. The functional requirements and cost considerations involved in applying these devices for the recovery of waste heat from various types of prime-movers considered for application in the ICES Systems Engineering Program are examined.

  1. Galaxy cluster's rotation

    Manolopoulou, Maria


    We study the possible rotation of cluster galaxies, developing, testing and applying a novel algorithm which identifies rotation, if such does exits, as well as its rotational centre, its axis orientation, rotational velocity amplitude and, finally, the clockwise or counterclockwise direction of rotation on the plane of the sky. To validate our algorithms we construct realistic Monte-Carlo mock rotating clusters and confirm that our method provides robust indications of rotation. We then apply our methodology on a sample of Abell clusters with z<~0.1 with member galaxies selected from the SDSS DR10 spectroscopic database. We find that ~35% of our clusters are rotating when using a set of strict criteria, while loosening the criteria we find this fraction increasing to ~48%. We correlate our rotation indicators with the cluster dynamical state, provided either by their Bautz-Morgan type or by their X-ray isophotal shape and find for those clusters showing rotation that the significance and strength of their...


    Sorin Adrian Achim


    Full Text Available In this paper we put in discussion some ethical aspects of plant, machinery and equipment valuation. After a presentation of the general issues of ethics in valuation domain, we analyze the application of the fundamental ethical principles in plant, machinery and equipment valuation domain. To support our conclusions we use some findings of a study that we conducted to identify the particularities of the plant, machinery and equipment valuation activity in Romania.

  3. Energy Transfer in Rotating Turbulence

    Cambon, Claude; Mansour, Nagi N.; Godeferd, Fabien S.; Rai, Man Mohan (Technical Monitor)


    The influence or rotation on the spectral energy transfer of homogeneous turbulence is investigated in this paper. Given the fact that linear dynamics, e.g. the inertial waves regime tackled in an RDT (Rapid Distortion Theory) fashion, cannot Affect st homogeneous isotropic turbulent flow, the study of nonlinear dynamics is of prime importance in the case of rotating flows. Previous theoretical (including both weakly nonlinear and EDQNM theories), experimental and DNS (Direct Numerical Simulation) results are gathered here and compared in order to give a self-consistent picture of the nonlinear effects of rotation on tile turbulence. The inhibition of the energy cascade, which is linked to a reduction of the dissipation rate, is shown to be related to a damping due to rotation of the energy transfer. A model for this effect is quantified by a model equation for the derivative-skewness factor, which only involves a micro-Rossby number Ro(sup omega) = omega'/(2(OMEGA))-ratio of rms vorticity and background vorticity as the relevant rotation parameter, in accordance with DNS and EDQNM results fit addition, anisotropy is shown also to develop through nonlinear interactions modified by rotation, in an intermediate range of Rossby numbers (Ro(omega) = (omega)' and Ro(omega)w greater than 1), which is characterized by a marco-Rossby number Ro(sup L) less than 1 and Ro(omega) greater than 1 which is characterized by a macro-Rossby number based on an integral lengthscale L and the micro-Rossby number previously defined. This anisotropy is mainly an angular drain of spectral energy which tends to concentrate energy in tile wave-plane normal to the rotation axis, which is exactly both the slow and the two-dimensional manifold. In Addition, a polarization of the energy distribution in this slow 2D manifold enhances horizontal (normal to the rotation axis) velocity components, and underlies the anisotropic structure of the integral lengthscales. Finally is demonstrated the

  4. Application Experience of Stepper Motor in Equipment Manufacturing Industry%步进电动机在装备制造业中的应用经验

    黄捷建; 王军; 肖哲之


    Stepper motor selection and application experience have begun to attract attention from industry. The stepper control theory, the stepper main parameters, and the process for motor selection were introduced. The selection of stepper power supply volt and current, the volt influence on torque-speed curve, comparison of different performance caused by different wire diagram, high speed application improving, temperature rise lowering, vibration and noise level lowering were introduced.%如何选择合适步进电动机,用好步进电动机,是业界非常关注的问题.文章从步进电动机的控制原理、电机主要参数、电机选型方法等方面进行阐述,重点论述步进电动机的供电电压、电流选择,不同电压对矩频曲线的影响原理及程度,电机不同接线方式的性能对比,电机高速性能提升办法,电机温升降低办法,电机低频共振降低方法.

  5. The application of Audio technology in household equipment%音响技术在家用设备中的应用



    The article analyzes the use of audio technology in broadcasting,as timbre processing a major example ,to illustrate the use and development of audio technology. Bass replay technology and the standing wave suppression technology are used in HDTV, the Sound effects of HDTV have been significantly improved. Finally,this article used the audio technology In TV applications,listed Surround sound technology,SPS-3D,Surround biomimetic approach,Dolby Pro Logic surround sound manner,Fully digital Dolby Surround AC-3 technology in TV applications.%  文章分析了音响技术在广播中的运用,以音色处理为主要例子来说明了音响技术的运用和发展。在HDTV中运用了低音重放技术和驻波抑制技术,对HDTV的音响效果有了显著提高。最后以音响技术在电视中的应用为例,列举了环绕声技术、SPS一3D环绕声仿生方式、杜比定向逻辑环绕声方式、全数字杜比环绕声AC-3等技术在电视中的运用。

  6. How to Use Equipment Therapeutically.

    Bowne, Douglas


    Shares therapeutic and economic practices surrounding equipment used in New York's Higher Horizons adventure program of therapy for troubled youth. Encourages educators, therapists, and administrators to explore relationship between equipment selection, program goals, and clients. (NEC)

  7. Fault Diagnosis for Rotating Machinery: A Method based on Image Processing.

    Lu, Chen; Wang, Yang; Ragulskis, Minvydas; Cheng, Yujie


    Rotating machinery is one of the most typical types of mechanical equipment and plays a significant role in industrial applications. Condition monitoring and fault diagnosis of rotating machinery has gained wide attention for its significance in preventing catastrophic accident and guaranteeing sufficient maintenance. With the development of science and technology, fault diagnosis methods based on multi-disciplines are becoming the focus in the field of fault diagnosis of rotating machinery. This paper presents a multi-discipline method based on image-processing for fault diagnosis of rotating machinery. Different from traditional analysis method in one-dimensional space, this study employs computing method in the field of image processing to realize automatic feature extraction and fault diagnosis in a two-dimensional space. The proposed method mainly includes the following steps. First, the vibration signal is transformed into a bi-spectrum contour map utilizing bi-spectrum technology, which provides a basis for the following image-based feature extraction. Then, an emerging approach in the field of image processing for feature extraction, speeded-up robust features, is employed to automatically exact fault features from the transformed bi-spectrum contour map and finally form a high-dimensional feature vector. To reduce the dimensionality of the feature vector, thus highlighting main fault features and reducing subsequent computing resources, t-Distributed Stochastic Neighbor Embedding is adopt to reduce the dimensionality of the feature vector. At last, probabilistic neural network is introduced for fault identification. Two typical rotating machinery, axial piston hydraulic pump and self-priming centrifugal pumps, are selected to demonstrate the effectiveness of the proposed method. Results show that the proposed method based on image-processing achieves a high accuracy, thus providing a highly effective means to fault diagnosis for rotating machinery.

  8. Fault Diagnosis for Rotating Machinery: A Method based on Image Processing

    Lu, Chen; Wang, Yang; Ragulskis, Minvydas; Cheng, Yujie


    Rotating machinery is one of the most typical types of mechanical equipment and plays a significant role in industrial applications. Condition monitoring and fault diagnosis of rotating machinery has gained wide attention for its significance in preventing catastrophic accident and guaranteeing sufficient maintenance. With the development of science and technology, fault diagnosis methods based on multi-disciplines are becoming the focus in the field of fault diagnosis of rotating machinery. This paper presents a multi-discipline method based on image-processing for fault diagnosis of rotating machinery. Different from traditional analysis method in one-dimensional space, this study employs computing method in the field of image processing to realize automatic feature extraction and fault diagnosis in a two-dimensional space. The proposed method mainly includes the following steps. First, the vibration signal is transformed into a bi-spectrum contour map utilizing bi-spectrum technology, which provides a basis for the following image-based feature extraction. Then, an emerging approach in the field of image processing for feature extraction, speeded-up robust features, is employed to automatically exact fault features from the transformed bi-spectrum contour map and finally form a high-dimensional feature vector. To reduce the dimensionality of the feature vector, thus highlighting main fault features and reducing subsequent computing resources, t-Distributed Stochastic Neighbor Embedding is adopt to reduce the dimensionality of the feature vector. At last, probabilistic neural network is introduced for fault identification. Two typical rotating machinery, axial piston hydraulic pump and self-priming centrifugal pumps, are selected to demonstrate the effectiveness of the proposed method. Results show that the proposed method based on image-processing achieves a high accuracy, thus providing a highly effective means to fault diagnosis for rotating machinery. PMID

  9. Electrical Design and Application of Equipment IP Network Based on TCP / IP%基于TCP/IP的设备IP网的电气设计与应用



    针对现有弱电系统在大型建筑应用中存在的不足.探讨具有TCP/IP连接功能的弱电系统和相对应的综合布线与网络系统.提出运用TCP/IP网络技术构建设备IP网的可行性和重要性.并给出实际应用案例。%With respect to the deficiencies of existing weak current system in the application for largescale buildings, this paper discusses a weak current system with the function of TCP/IP connection and the corresponding generic cabling and network system, propo

  10. NIH Standard. Animal Care Equipment.

    National Institutes of Health (DHEW), Bethesda, MD. Office of Administrative Management.

    The National Institutes of Health standardized animal care equipment is presented in this catalog. Each piece of equipment is illustrated and described in terms of overall dimensions, construction, and general usage. A price list is included to estimate costs in budgeting, planning, and requisitioning animal care equipment. The standards and…

  11. Abyssal soil investigation equipment

    Smits, F.P.; Maggioni, W.; Mainardi, U. [ISMES, Bergamo (Italy)


    The present paper deals with the development of a testing device for quick offshore geotechnical investigations. The equipment, at present, consists of a penetrometer, mounted on a sea bed platform, a handling frame and a control cabin; a further development includes a drill rig and a geotechnical laboratory. All this is designed so as to be an autonomous unit that can be handled by various types of non-specialized ships which have the necessary deck space. The sea bed platform can operate in 2,000 m of waterdepth and is provided with a hydraulic penetrometer, with a thrust capacity of 400 kN, able to carry out cone penetration type testing until a depth of more than 100 m, as well as shallow depth continuous sampling. The penetrometer can be equipped with a series of probes (piezocone, pressiocone, total radial pressure transducer, seismic cone) allowing the execution of the wide range of direct geotechnical measurements normally performed during on-land penetration tests.

  12. Spectroastrometry of rotating gas disks for the detection of supermassive black holes in galactic nuclei. II. Application to the galaxy Centaurus A (NGC 5128)

    Gnerucci, A.; Marconi, A.; Capetti, A.; Axon, D. J.; Robinson, A.; Neumayer, N.


    We measure the black hole mass in the nearby active galaxy Centaurus A (NGC 5128) using a new method based on spectroastrometry of a rotating gas disk. The spectroastrometric approach consists in measuring the photocenter position of emission lines for different velocity channels. In a previous paper we focused on the basic methodology and the advantages of the spectroastrometric approach with a detailed set of simulations demonstrating the possibilities for black hole mass measurements going...

  13. Application of precise altimetry to the study of precise leveling of the sea surface, the Earth's gravity field, and the rotation of the Earth

    Segawa, J.; Ganeko, Y.; Sasaki, M.; Mori, T.; Ooe, M.; Nakagawa, I.; Ishii, H.; Hagiwara, Y.


    Our program includes five research items: (1) determination of a precision geoid and gravity anomaly field; (2) precise leveling and detection of tidal changes of the sea surface and study of the role of the tide in the global energy exchange; (3) oceanic effect on the Earth's rotation and polar motion; (4) geological and geophysical interpretation of the altimetry gravity field; and (5) evaluation of the effectiveness of local tracking of TOPEX/POSEIDON by use of a laser tracker.

  14. 点源模型在旋转声源声场计算中的推广应用%Extended application of the point source model for the acoustic field solution of the rotating source

    付建; 王永生


    In order to forecast the noise of circumvolve machines such as propellers, waterjets or pumps, the method of the point source model is studied to predict the loading noise of the rotating source in the frequency domain. The rotating source can be replaced by finite stationary sources distributing along the rotating trace, and the time differ-ence between sources can be transformed into phase differences in the frequency domain. The sound field of the ro-tating source is equal to the summation of all of the point sources. The veracity of the discretization method is vali-dated by the freedom sound field simulation of the rotating point source and rotating force source. And the require-ment of the number of discrete points of the rotating source with a different radius and frequency is analyzed. Final-ly, taking the single propeller blade as the object, two discretization methods of blade rotating force are put forward. One method is to take each acoustic mesh as a single force source, and the other method is to divide the blade into segments and each segment can be taken as a single force source. The validity of these discretization methods has been validated, which can provide the precondition for the extended application of the point source model for the sound field calculation of the rotating source.%针对螺旋桨、喷水推进器、风扇等旋转机械,研究了基于点源模型的旋转声源负载噪声频域预报方法。结合点源模型理论,将旋转声源离散为均匀分布在运动轨迹上的有限个固定声源,各声源间时域的迟滞时间转换为频域的相位差,所有点声源声场的总和即为旋转声源的声场。结合自由空间旋转点源和旋转力源声场仿真计算,验证了旋转声源离散方法的准确性;计算分析了不同半径、不同频率旋转声源对离散点数的要求;以单个螺旋桨叶片为对象,提出了叶片表面旋转力源按声场网格离散和分块离散的方

  15. R-mode oscillations of rapidly rotating Newtonian stars - A new numerical scheme and its application to the spin evolution of neutron stars

    Karino, S; Eriguchi, Y; Karino, Shigeyuki; Yoshida, Shin'ichirou; Yoshida, Shijun; Eriguchi, Yoshiharu


    We have developed a new numerical scheme to solve r-mode oscillations of {\\it rapidly rotating polytropic stars} in Newtonian gravity. In this scheme, Euler perturbations of the density, three components of the velocity are treated as four unknown quantities together with the oscillation frequency. For the basic equations of oscillations, the compatibility equations are used instead of the linearized equations of motion. By using this scheme, we have solved the classical r-mode oscillations of rotational equilibrium sequences of polytropes with the polytropic indices $N = 0.5, 1.0$ and 1.5 for $m = 2, 3$ and 4 modes. Here $m$ is the rank of the spherical harmonics $Y_l^m$. These results have been applied to investigate evolution of uniformly rotating hot young neutron stars by considering the effect of gravitational radiation and viscosity. We have found that the maximum angular velocities of neutron stars are around 10-20% of the Keplerian angular velocity irrespective of the softness of matter. This confirm...

  16. On the Coupling between Helium Settling and Rotation-Induced Mixing in Stellar Radiative Zones II- Application to light elements in population I main-sequence stars

    Théado, S; Theado, Sylvie; Vauclair, Sylvie


    In the two previous papers of this series, we have discussed the importance of t he $\\mu$-gradients due to helium settling on rotation-induced mixing, first in a n approximate analytical way, second in a 2D numerical simulation. We have found that, for slowly rotating low mass stars, a process of ``creeping paralysis" in which the circulation and the diffusion are nearly frozen may take place below the convective zone. Here we apply this theory to the case of lithium and beryll ium in galactic clusters and specially the Hyades. We take into account the rota tional braking with rotation velocities adjusted to the present observations. We find that two different cells of meridional circulation appear on the hot side of the "lithium dip" and that the "creeping paralysis" process occurs, not dir ectly below the convective zone, but deeper inside the radiative zone, at the to p of the second cell. As a consequence, the two cells are disconnected, which ma y be the basic reason for the lithium increase with effecti...

  17. Identifying Broadband Rotational Spectra with Neural Networks

    Zaleski, Daniel P.; Prozument, Kirill


    A typical broadband rotational spectrum may contain several thousand observable transitions, spanning many species. Identifying the individual spectra, particularly when the dynamic range reaches 1,000:1 or even 10,000:1, can be challenging. One approach is to apply automated fitting routines. In this approach, combinations of 3 transitions can be created to form a "triple", which allows fitting of the A, B, and C rotational constants in a Watson-type Hamiltonian. On a standard desktop computer, with a target molecule of interest, a typical AUTOFIT routine takes 2-12 hours depending on the spectral density. A new approach is to utilize machine learning to train a computer to recognize the patterns (frequency spacing and relative intensities) inherit in rotational spectra and to identify the individual spectra in a raw broadband rotational spectrum. Here, recurrent neural networks have been trained to identify different types of rotational spectra and classify them accordingly. Furthermore, early results in applying convolutional neural networks for spectral object recognition in broadband rotational spectra appear promising. Perez et al. "Broadband Fourier transform rotational spectroscopy for structure determination: The water heptamer." Chem. Phys. Lett., 2013, 571, 1-15. Seifert et al. "AUTOFIT, an Automated Fitting Tool for Broadband Rotational Spectra, and Applications to 1-Hexanal." J. Mol. Spectrosc., 2015, 312, 13-21. Bishop. "Neural networks for pattern recognition." Oxford university press, 1995.

  18. Relativistic Rotating Vector Model

    Lyutikov, Maxim


    The direction of polarization produced by a moving source rotates with the respect to the rest frame. We show that this effect, induced by pulsar rotation, leads to an important correction to polarization swings within the framework of rotating vector model (RVM); this effect has been missed by previous works. We construct relativistic RVM taking into account finite heights of the emission region that lead to aberration, time-of-travel effects and relativistic rotation of polarization. Polarizations swings at different frequencies can be used, within the assumption of the radius-to-frequency mapping, to infer emission radii and geometry of pulsars.




    The International Atomic Energy Agency's (IAEA) Department of Safeguards uses complex instrumentation for the application of safeguards at nuclear facilities around the world. Often, this equipment is developed through cooperation with member state support programs because the Agency's requirements are unique and are not met by commercially available equipment. Before approving an instrument or system for routine inspection use, the IAEA subjects it to a series of tests designed to evaluate its reliability. In 2000, the IAEA began to observe operational failures in digital surveillance systems. In response to the observed failures, the IAEA worked with the equipment designer and manufacturer to determine the cause of failure. An action plan was developed to correct the performance issues and further test the systems to make sure that additional operational issues would not surface later. This paper addresses the steps taken to address operation issues related to digital image surveillance systems and the lessons learned during this process.

  20. Application of Rotating Liner Cementing Technology in WZ12-2 Oilfield in South China Sea%旋转尾管固井技术在南海WZ12-2油田的应用∗

    阮臣良; 张瑞; 张国安; 李建业; 马开华


    Rotating liner cementing technology can effectively improve the efficiency of cement displacement and cementing quality. Considering the practical situation of the WZ12-2 Oilfield in South China Sea, the main technical difficulties of rotating liner cementing operation has been analyzed. The key technical measures like the liner cementing tool selection, tool’ s parameter setting, stabilizer selection and rotating liner cementing operation have been introduced. The rotating liner cementing operations of 8 directional wells on platform A have been com-pleted and have attained much better cementing quality compared with conventional liner cementing operation. The field application practices have presented important significance for rotating liner cementing process optimization and its application promotion in highly deviated wells. The technology provides a new solution to improving the cemen-ting quality of highly deviated wells and small casing-wellbore annulus well.%WZ12-2油田目的层段存在异常高压和裂缝性泥岩,钻井液密度高,断层交错,极易发生漏失,限制了固井时的泵压和排量,导致固井质量一直很难保证。而旋转尾管固井技术能够有效提高水泥浆顶替效率和固井质量。鉴于此,结合南海WZ12-2油田的实际情况,分析了旋转尾管固井施工的主要技术难点,阐述了尾管固井工具选择、工具参数设定、扶正器的选择和旋转尾管固井操作等关键技术措施,完成了A平台8口定向井的旋转尾管固井作业。与常规尾管固井作业对比结果表明,旋转尾管固井作业固井质量明显较高。本次现场应用实践对于旋转尾管固井工艺优化及其在大斜度井中的推广应用具有重要的意义,也为提高大斜度井和小间隙井固井质量提供了新的解决方法。

  1. Rotational nuclear models and electron scattering

    Moya de Guerra, E.


    A review is made of the basic formalism involved in the application of nuclear rotational models to the problem of electron scattering from axially symmetric deformed nuclei. Emphasis is made on the use of electron scattering to extract information on the nature of the collective rotational model. In this respect, the interest of using polarized beam and target is discussed with the help of illustrative examples. Concerning the nuclear structure four rotational models are considered: Two microscopic models, namely the Projected Hartree-Fock (PHF) and cranking models; and two collective models, the rigid rotor and the irrotational flow models. The problem of current conservation within the different models is also discussed.

  2. Enhancing Rotational Diffusion Using Oscillatory Shear

    Leahy, Brian D.


    Taylor dispersion - shear-induced enhancement of translational diffusion - is an important phenomenon with applications ranging from pharmacology to geology. Through experiments and simulations, we show that rotational diffusion is also enhanced for anisotropic particles in oscillatory shear. This enhancement arises from variations in the particle\\'s rotation (Jeffery orbit) and depends on the strain amplitude, rate, and particle aspect ratio in a manner that is distinct from the translational diffusion. This separate tunability of translational and rotational diffusion opens the door to new techniques for controlling positions and orientations of suspended anisotropic colloids. © 2013 American Physical Society.

  3. Enhancing Rotational Diffusion Using Oscillatory Shear

    Leahy, Brian D.; Cheng, Xiang; Ong, Desmond C.; Liddell-Watson, Chekesha; Cohen, Itai


    Taylor dispersion—shear-induced enhancement of translational diffusion—is an important phenomenon with applications ranging from pharmacology to geology. Through experiments and simulations, we show that rotational diffusion is also enhanced for anisotropic particles in oscillatory shear. This enhancement arises from variations in the particle’s rotation (Jeffery orbit) and depends on the strain amplitude, rate, and particle aspect ratio in a manner that is distinct from the translational diffusion. This separate tunability of translational and rotational diffusion opens the door to new techniques for controlling positions and orientations of suspended anisotropic colloids.

  4. Waste Handling Equipment Devleopment Test and Evaluation

    R.L. Tome


    The purpose of this study is to identify candidate Monitored Geologic Repository (MGR) surface waste handling equipment for development testing. This study will also identify strategies for performing the development tests. Development testing shall be implemented to support detail design and reduce design risks. Development testing shall be conducted to confirm design concepts, evaluate alternative design concepts, show the availability of needed technology, and provide design documentation. The candidate equipment will be selected from MGR surface waste handling equipment that is the responsibility of the Management and Operating Contractor (M&O) Surface Design Department. The equipment identified in this study is based on Viability Assessment (VA) design. The ''Monitored Geologic Repository Test and Evaluation Plan'' (MGR T&EP), Reference 5.1, was used as a basis for this study. The MGR T&EP reflects the extent of test planning and analysis that can be conducted, given the current status of the MGR requirements and latest VA design information. The MGR T&EP supports the appropriate sections in the license application (LA) in accordance with 10 CFR 60.2 1(c)(14). The MGR T&EP describes the following test activities: site characterization to confirm, by test and analysis, the suitability of the Yucca Mountain site for housing a geologic repository; development testing to investigate and document design concepts to reduce risk; qualification testing to verify equipment compliance with design requirements, specifications, and regulatory requirements; system testing to validate compliance with MGR requirements, which include the receipt, handling, retrieval, and disposal of waste; periodic performance testing to verify preclosure requirements and to demonstrate safe and reliable MGR operation; and performance confirmation modeling, testing, and analysis to verify adherence to postclosure regulatory requirements. Development test activities can be

  5. Simulation Gaming in Construction: ER, The Equipment Replacement Game.

    Nassar, Khaled


    The Equipment Replacement simulation game can be used to explain the different effects of various equipment buy/sell strategies on the economic performance of construction companies. The probabilistic aspect of demand in the construction market is incorporated. The game is implemented using Excel and Visual Basic for Applications. (Author/SK)

  6. Installation and Assembly, Electrical Ground Support Equipment (GSE), Specification for

    Denson, Erik C.


    This specification covers the general workmanship requirements and procedures for the complete installation and assembly of electrical ground support equipment (EGSE) such as terminal distributors, junction boxes, conduit and fittings, cable trays and accessories, interconnecting cables (including routing requirements), motor-control equipment, and necessary hardware as specified by the applicable contract and drawings.

  7. Remanufacturing strategy for chemical equipment

    ZHANG Xian-cheng; XU Bin-shi; WANG Hai-dou; JIANG Yi; WU Yi-xiong; GONG Jian-ming; TU Shan-dong


    Failure, especially induced by cracks, usually occurred in the service process of chemical equipment, which could cause the medium leakage, fire hazard and explosion and induced the personnel casualty and economic losses. To assure the long-term and safety service, it is necessary to apply the remanufacturing technology on the chemical equipment containing cracks. The recent research advances on the remanufacturing, the failure modes and the life extension technology for chemical equipment were reviewed. The engineering strategy of the remanufacturing for the chemical equipment was proposed, which could provide a reasonable and reliable technical route for the remanufacturing operation of chemical equipment. In the strategy, the redesign was also been considered.

  8. Resistance welding equipment manufacturing capability for exports

    Sastry, V.S.; Raju, Y.S.; Somani, A.K.; Setty, D.S.; Rameswara Raw, A.; Hermantha Rao, G.V.S.; Jayaraj, R.N. [Nuclear Fuel Complex, Dept. of Atomic Energy, Hyderbad (India)


    Indian Pressurised Heavy Water Reactor (PHWR) fuel bundle is fully welded and is unique in its design. Appendage welding, end closure welding, and end plate welding is carried out using resistance welding technique. Out of many joining processes available, resistance-welding process is reliable, environment friendly and best suitable for mass production applications. Nuclear Fuel Complex (NFC), an industrial unit is established in Hyderabad, under the aegis of the Dept of Atomic Energy to manufacture fuel for Pressurised Heavy Water Reactors. From inception, NFC has given importance for self-reliance and indigenization with respect to manufacturing process and equipment. Sintering furnaces, centreless grinders, appendage-welding machines, end-closure welding equipment and end-plate welding equipments, which were initially imported, are either indigenized or designed and manufactured in house. NFC has designed, manufactured a new appendage-welding machine for manufacturing 37 element fuel bundles. Recently NFC has bagged an order from IAEA through international bidding for design, manufacture, supply, erection and commissioning of end-closure welding equipment. The paper gives in detail the salient features of these welding equipment. (author)

  9. Desenvolvimento e avaliação de um controlador eletrônico para equipamentos de aplicação de insumos Development and evaluation of electronic control system in equipments for application of fertilizer

    Claudio K. Umezu


    Full Text Available Com este trabalho, objetivou-se o desenvolvimento e avaliação de um sistema de controle para compensar a variação na rotação de acionamento dos dosadores de fertilizantes sólidos de um equipamento para formulação, dosagem e aplicação de fertilizantes sólidos no sulco, a taxas variáveis, em função da alteração da temperatura do óleo hidráulico. Desenvolveram-se controladores do tipo PID, para assegurar a manutenção precisa das rotações desejadas nos motores hidráulicos de acionamento dos dosadores de fertilizante. O equipamento foi testado em laboratório, utilizando-se sinais de testes padronizados, onde foi avaliado o seu comportamento em função do aquecimento do óleo hidráulico. Os testes realizados mostraram que o sistema de controle de rotação implementado foi adequado, mantendo inalterado o comportamento do sistema hidráulico, mesmo na ocorrência de variação da temperatura do óleo hidráulico.The objective of this research was the development and evaluation of a control system used to compensate variation on angular speed of dosers in an equipment for formulation, dosing and application of solid fertilizers in the furrow, at variable rates, by monitoring the hydraulic oil temperature changes. PID controllers were designed to guarantee the desired angular speed of the hydraulic motors dosing shaft. The equipment was tested in laboratory using standard signal tests procedure, being able to analyze the machine behavior as a function of the hydraulic oil temperature variations. The accomplished tests showed that the implemented control system was suitable and exhibited a steady behavior even during hydraulic oil temperature changes.

  10. 金融机具销售组合预测方法的研究与应用%Study and Application of Sales Combination Prediction method for Financial Equipment

    刘智; 刘洪


    In this dissertation, one Financial Equipment Co, Ltd is taken as a practical background; the thorough research of some sales prediction problems is based on modern prediction theory and relying on science and technology foundation project of Liaoning province called "Study on enterprises and markets prediction system". Firstly, it applies quantitative and qualitative forecasting methods to predict individual. Secondly, it applies the combined forecasting method to amend predictive value. Finally, using the qualitative factors to amend the quantitative forecast results. And the application of this method JL302 micro Currency Sorter 2009 sales forecast, the results show that this method is better than the previous ways. Amended with qualitative and quantitative method is more suitable for financial equipment products sales forecast.%本文以省科学技术基金项目"企业市场预测系统的研究"为依托,以鞍山某金融机具公司为背景,对金融机具销售组合预测进行了深入的研究.首先,应用定量和定性预测方法进行单项预测,然后应用组合预测方法进一步修正预测值,最后运用定性影响因素修正定量预测结果.并且应用此方法对JL302微型纸币清分机2009年销售量进行预测,结果表明此方法优于以往各种方法.用定性修正定量的方法更适用于金融机具产品的销售量预测.

  11. 磁悬浮轴承技术在风机与泵类设备中的应用现状%Application Status of Magnetic Bearings in Fan and Pump Equipments

    汤士明; 梅磊; 欧阳慧珉


    阐述了磁悬浮轴承的基本原理与优点,详细比较了与磁悬浮轴承技术相关的国内外最新研究动态,并研究了其在风机和泵类设备中的应用现状,最后通过分析磁悬浮轴承在空调应用中的技术性和经济性问题得出了其在空调风机、压缩机等设备上具有良好的市场应用前景的结论.%The basic principles of magnetic bearings and its advantages were explained.Its related new developments in home and board were compared in details,and the application status of magnetic bearings in fan and pump equipments was researched.The conclusion that magnetic bearings have a good prospect in air conditioning fans and compressors was gotten through the analysis of technical and economic problems of magnetic bearings application in air conditioning.

  12. Evaluation of the Effect of Rotation and Application Rate of Nitrogen on Yield, Yield Components and Nitrogen Efficiency Indexes in wheat

    R Nasri


    seeding rate of 200 kg ha-1. Soil samples were collected after harvest of each crop from 0 to 30 cm and 31 to 60 cm soil depths using a soil auger. Wheat grain yield (according to 14% moisture obtained by harvesting the central area of 3 in 10 m in each plot. Yield components were determined from two randomly selected areas (2m2 within each plot. Plant samples collected at harvest were separated into grain and straw and oven-dried at 60˚C for 72hr. Biomass and grain sub samples analyzed for total N content using a micro-Kjeldahl digestion with sulfuric acid. The terminology of N efficiency parameters was considered according to Delogu et al, (11 and Lopez-Bellido & Lopez-Bellido, (22, Rahimizadeh et al. (30, Limon-Ortega et al. (20 methods. Results and Discussion The results showed that there were highly significant differences (P ≤ 0.01 in forage yield. There were also significant differences (P ≤ 0.05 in total dry weight, protein content and protein yield between treatments. Perko varieties produced higher fresh and dry matter yield with 69,586 (kg ha-1 and 7147 (kg ha-1, respectively compared to other varieties. Buko varieties showed greater protein percentage with 23.36 compared to the rest of the varieties. The highest and lowest grain yield, with 8345, and 4491 (kg ha-1 were obtained for Buko; wheat rotation and fallow, wheat rotation, respectively. The highest and lowest nitrogen uptake was obtained for Buko; wheat and clover, wheat rotation, respectively. The differences between the rotations were significant for various agronomic nitrogen efficiency. The rotation of oilseed radish and wheat showed greater nitrogen economic performance with 36.20 kg ha-1. By increasing nitrogen rate agronomic performance decreased with the exception in fallow- wheat. Physiological efficiency of nitrogen in fallow-wheat rotation was more than 39 (kg kg-1 of nitrogen. The maximum efficiency of nitrogen recovery was obtained for oilseed radish: wheat and Perko PVH; wheat

  13. A visual understanding of optical rotation using corn syrup

    Nixon, M.; Hughes, I. G.


    In this paper a visual demonstration of optical rotation is presented, with content appropriate for use in a lecture demonstration as well as quantitative techniques suitable for an undergraduate-laboratory experiment. Linearly polarised lasers of various wavelengths are propagated through a glass tube containing corn syrup. The rotation of the plane of polarisation of the light is visible with the naked eye, making the experiment dramatic and engaging and aiding understanding of the phenomenon of optical rotation. In addition, we present a simple approach to quantitatively analyse data using only equipment commonly found in undergraduate teaching laboratories.

  14. Studying rotational dynamics with a smartphone—accelerometer versus gyroscope

    Braskén, Mats; Pörn, Ray


    The wide-spread availability of smartphones makes them a valuable addition to the measurement equipment of both the physics classroom and the instructional physics laboratory, encouraging an active interaction between measurements and modeling activities. Two useful sensors, available in most modern smartphones and tablets, are the 3-axis acceleration sensor and the 3-axis gyroscope. We explore the strengths and weaknesses of each type of sensor and use them to study the rotational dynamics of objects rotating about a fixed axis. Care has to be taken when interpreting acceleration sensor data, and in some cases the gyroscope will allow for rotational measurements not easily replicated using the acceleration sensor.

  15. The Facility and Process Technics of Polyethylene Rotational Molding


    @@ 1. Introduction Rotational molding is the process by which hollow plastic parts are formed. It mainly processes the product which Injection molding and Blow molding can not process medium-sized, large-sized and super large-sized plastic parts. The technics may turn out a tub, dustbin, stock tank, sailboat. The research institute of Lanzhou introduces a suit of RS-16 Rotational Molding Machine from Germany Reinhadt Co. on 1990. It mainly put up experiment and smallscale production. RS-16 rotational molding machine is a single arm and di-axial equipment. It is consisting of a gas heated sintering oven, cooling chamber, mouldcarrying carriage and a controlling unit.

  16. Electric Deflection of Rotating Molecules

    Gershnabel, E


    We provide a theory of the deflection of polar and non-polar rotating molecules by inhomogeneous static electric field. Rainbow-like features in the angular distribution of the scattered molecules are analyzed in detail. Furthermore, we demonstrate that one may efficiently control the deflection process with the help of short and strong femtosecond laser pulses. In particular the deflection process may by turned-off by a proper excitation, and the angular dispersion of the deflected molecules can be substantially reduced. We study the problem both classically and quantum mechanically, taking into account the effects of strong deflecting field on the molecular rotations. In both treatments we arrive at the same conclusions. The suggested control scheme paves the way for many applications involving molecular focusing, guiding, and trapping by inhomogeneous fields.

  17. Faraday rotation system. Topical report

    Bauman, L.E.; Wang, W.


    The Faraday Rotation System (FRS) is one of the advanced laser-based diagnostics developed at DIAL to provide support for the demonstration of prototype-scale coal-fired combustion magnetohydrodynamic (MHD) electrical power generation. Intended for application in the MHD channel, the system directly measures electron density through a measurement of the induced rotation in the polarization of a far infrared laser beam after passing through the MHD flow along the magnetic field lines. A measurement of the induced polarization ellipticity provides a measure of the electron collision frequency which together with the electron density gives the electron conductivity, a crucial parameter for MHD channel performance. The theory of the measurements, a description of the system, its capabilities, laboratory demonstration measurements on seeded flames with comparison to emission absorption measurements, and the current status of the system are presented in this final report.

  18. Alignment of suprathermally rotating grains

    Lazarian, A.


    It is shown that mechanical alignment can be efficient for suprathermally rotating grains, provided that they drift with supersonic velocities. Such a drift should be widely spread due to both Alfvenic waves and ambipolar diffusion. Moreover, if suprathermal rotation is caused by grain interaction with a radiative flux, it is shown that mechanical alignment may be present even in the absence of supersonic drift. This means that the range of applicability of mechanical alignment is wider than generally accepted and that it can rival the paramagnetic one. We also study the latter mechanism and re-examine the interplay between poisoning of active sites and desorption of molecules blocking the access to the active sites of H_2 formation, in order to explain the observed poor alignment of small grains and good alignment of large grains. To obtain a more comprehensive picture of alignment, we briefly discuss the alignment by radiation fluxes and by grain magnetic moments.

  19. Deconstructing Mental Rotation

    Larsen, Axel


    A random walk model of the classical mental rotation task is explored in two experiments. By assuming that a mental rotation is repeated until sufficient evidence for a match/mismatch is obtained, the model accounts for the approximately linearly increasing reaction times (RTs) on positive trials...... alignment take place during fixations at very high speed....

  20. Short-rotation plantations

    Philip E. Pope; Jeffery O. Dawson


    Short-rotation plantations offer several advantages over longer, more traditional rotations. They enhance the natural productivity of better sites and of tree species with rapid juvenile growth. Returns on investment are realized in a shorter period and the risk of loss is reduced compared with long term investments. Production of wood and fiber can be maximized by...

  1. Faraday rotation measure synthesis

    Brentjens, MA; de Bruyn, AG


    We extend the rotation measure work of Burn ( 1966, MNRAS, 133, 67) to the cases of limited sampling of lambda(2) space and non-constant emission spectra. We introduce the rotation measure transfer function (RMTF), which is an excellent predictor of n pi ambiguity problems with the lambda(2) coverag

  2. SMAP Faraday Rotation

    Le Vine, David


    Faraday rotation is a change in the polarization as signal propagates through the ionosphere. At L-band it is necessary to correct for this change and measurements are made on the spacecraft of the rotation angle. These figures show that there is good agreement between the SMAP measurements (blue) and predictions based on models (red).

  3. A Rotating Quantum Vacuum

    De Lorenci, V A


    We investigate which mapping we have to use to compare measurements made in a rotating frame to those made in an inertial frame. Using a "Lorentz-like" coordinate transformation we obtain that creation-anihilation operators of a massless scalar field in the rotating frame are not the same as those of an inertial observer. This leads to a new vacuum state (a rotating vacuum) which is a superposition of positive and negative frequency Minkowski particles. After this, introducing an apparatus device coupled linearly with the field we obtain that there is a strong correlation between number of rotating particles (in a given state) obtained via canonical quantization and via response function of the rotating detector. Finally, we analyse polarization effects in circular accelerators in the proper frame of the electron making a connection with the inertial frame point of view.

  4. Uniformly rotating neutron stars

    Boshkayev, Kuantay


    In this chapter we review the recent results on the equilibrium configurations of static and uniformly rotating neutron stars within the Hartle formalism. We start from the Einstein-Maxwell-Thomas-Fermi equations formulated and extended by Belvedere et al. (2012, 2014). We demonstrate how to conduct numerical integration of these equations for different central densities ${\\it \\rho}_c$ and angular velocities $\\Omega$ and compute the static $M^{stat}$ and rotating $M^{rot}$ masses, polar $R_p$ and equatorial $R_{\\rm eq}$ radii, eccentricity $\\epsilon$, moment of inertia $I$, angular momentum $J$, as well as the quadrupole moment $Q$ of the rotating configurations. In order to fulfill the stability criteria of rotating neutron stars we take into considerations the Keplerian mass-shedding limit and the axisymmetric secular instability. Furthermore, we construct the novel mass-radius relations, calculate the maximum mass and minimum rotation periods (maximum frequencies) of neutron stars. Eventually, we compare a...

  5. Synchronous states of slowly rotating pendula

    Kapitaniak, Marcin [Division of Dynamics, Technical University of Lodz, Stefanowskiego 1/15, 90-924 Lodz (Poland); Centre for Applied Dynamics Research, School of Engineering, University of Aberdeen, AB24 3UE Aberdeen, Scotland (United Kingdom); Czolczynski, Krzysztof; Perlikowski, Przemysław; Stefanski, Andrzej [Division of Dynamics, Technical University of Lodz, Stefanowskiego 1/15, 90-924 Lodz (Poland); Kapitaniak, Tomasz, E-mail: [Division of Dynamics, Technical University of Lodz, Stefanowskiego 1/15, 90-924 Lodz (Poland)


    Coupled systems that contain rotating elements are typical in physical, biological and engineering applications and for years have been the subject of intensive studies. One problem of scientific interest, which among others occurs in such systems is the phenomenon of synchronization of different rotating parts. Despite different initial conditions, after a sufficiently long transient, the rotating parts move in the same way — complete synchronization, or a permanent constant shift is established between their displacements, i.e., the angles of rotation — phase synchronization. Synchronization occurs due to dependence of the periods of rotating elements motion and the displacement of the base on which these elements are mounted. We review the studies on the synchronization of rotating pendula and compare them with the results obtained for oscillating pendula. As an example we consider the dynamics of the system consisting of n pendula mounted on the movable beam. The pendula are excited by the external torques which are inversely proportional to the angular velocities of the pendula. As the result of such excitation each pendulum rotates around its axis of rotation. It has been assumed that all pendula rotate in the same direction or in the opposite directions. We consider the case of slowly rotating pendula and estimate the influence of the gravity on their motion. We classify the synchronous states of the identical pendula and observe how the parameters mismatch can influence them. We give evidence that synchronous states are robust as they exist in the wide range of system parameters and can be observed in a simple experiment.

  6. Modeling Rotating Turbulent Flows with the Body Force Potential Model.

    Bhattacharya, Amitabh; Perot, Blair


    Like a Reynolds Stress Transport equation model, the turbulent potential model has an explicit Coriolis acceleration term that appears in the model that accounts for rotation effects. In this work the additional secondary effects that system rotation has on the dissipation rate, return-to-isotropy, and fast pressure strain terms are also included in the model. The resulting model is tested in the context of rotating isotropic turbulence, rotating homogeneous shear flow, rotating channel flow, and swirling pipe flow. Many of the model changes are applicable to Reynolds stress transport equation models. All model modifications are frame indifferent.

  7. Assessing the carbon sequestration potential of poplar and black locust short rotation coppices on mine reclamation sites in Eastern Germany - Model development and application.

    Quinkenstein, A; Jochheim, H


    In the temperate zone short rotation coppice systems for the production of woody biomass (SRC) have gained great interest as they offer a pathway to both sustainable bioenergy production and the potential sequestration of CO2 within the biomass and the soil. This study used the carbon model SHORTCAR to assess the carbon cycle of a poplar (Populus suaveolens Fisch. x Populus trichocarpa Torr. et Gray cv. Androscoggin) and a black locust (Robinia pseudoacacia L.) SRC. The model was calibrated using data from established SRC plantations on reclaimed mine sites in northeast Germany and validated through the determination of uncertainty ranges of selected model parameters and a sensitivity analysis. In addition to a 'reference scenario', representing the actual site conditions, 7 hypothetical scenarios, which varied in climate conditions, rotation intervals, runtimes, and initial soil organic carbon (SOC) stocks, were defined for each species. Estimates of carbon accumulation within the biomass, the litter layer, and the soil were compared to field data and previously published results. The model was sensitive to annual stem growth and initial soil organic carbon stocks. In the reference scenario net biome production for SRC on reclaimed sites in Lusatia, Germany amounted to 64.5 Mg C ha(-1) for R. pseudoacacia and 8.9 Mg C ha(-1) for poplar, over a period of 36 years. These results suggest a considerable potential of SRC for carbon sequestration at least on marginal sites. Copyright © 2015 Elsevier Ltd. All rights reserved.

  8. Symbolic derivation of high-order Rayleigh-Schroedinger perturbation energies using computer algebra: Application to vibrational-rotational analysis of diatomic molecules

    Herbert, John M. [Kansas State Univ., Manhattan, KS (United States). Dept. of Chemistry


    Rayleigh-Schroedinger perturbation theory is an effective and popular tool for describing low-lying vibrational and rotational states of molecules. This method, in conjunction with ab initio techniques for computation of electronic potential energy surfaces, can be used to calculate first-principles molecular vibrational-rotational energies to successive orders of approximation. Because of mathematical complexities, however, such perturbation calculations are rarely extended beyond the second order of approximation, although recent work by Herbert has provided a formula for the nth-order energy correction. This report extends that work and furnishes the remaining theoretical details (including a general formula for the Rayleigh-Schroedinger expansion coefficients) necessary for calculation of energy corrections to arbitrary order. The commercial computer algebra software Mathematica is employed to perform the prohibitively tedious symbolic manipulations necessary for derivation of generalized energy formulae in terms of universal constants, molecular constants, and quantum numbers. As a pedagogical example, a Hamiltonian operator tailored specifically to diatomic molecules is derived, and the perturbation formulae obtained from this Hamiltonian are evaluated for a number of such molecules. This work provides a foundation for future analyses of polyatomic molecules, since it demonstrates that arbitrary-order perturbation theory can successfully be applied with the aid of commercially available computer algebra software.

  9. Direct navigation on 3D rotational x-ray data acquired with a mobile propeller C-arm: accuracy and application in functional endoscopic sinus surgery.

    van de Kraats, Everine B; Carelsen, Bart; Fokkens, Wytske J; Boon, Sjirk N; Noordhoek, Niels; Niessen, Wiro J; van Walsum, Theo


    Recently, three-dimensional (3D) rotational x-ray imaging has been combined with navigation technology, enabling direct 3D navigation for minimally invasive image guided interventions. In this study, phantom experiments are used to determine the accuracy of such a navigation set-up for a mobile C-arm with propeller motion. After calibration of the C-arm system, the accuracy is evaluated by pinpointing divots on a special-purpose phantom with known geometry. This evaluation is performed both with and without C-arm motion in between calibration and registration for navigation. The variation caused by each of the individual transformations in the calibration and registration process is also studied. The feasibility of direct navigation on 3D rotational x-ray images for functional endoscopic sinus surgery has been evaluated in a cadaver navigation experiment. Navigation accuracy was approximately 1.0 mm, which is sufficient for functional endoscopic sinus surgery. C-arm motion in between calibration and registration slightly degraded the registration accuracy by approximately 0.3 mm. Standard deviations of each of the transformations were in the range 0.15-0.31 mm. In the cadaver experiment, the navigation images were considered in good correspondence with the endoscopic images by an experienced ENT surgeon. Availability of 3D localization information provided by the navigation system was considered valuable by the ENT surgeon.

  10. Application of an Aligned and Unaligned Signal Processing Technique to Investigate Tones and Broadband Noise in Fan and Contra-Rotating Open Rotor Acoustic Spectra

    Miles, Jeffrey Hilton; Hultgren, Lennart S.


    The study of noise from a two-shaft contra-rotating open rotor (CROR) is challenging since the shafts are not phase locked in most cases. Consequently, phase averaging of the acoustic data keyed to a single shaft rotation speed is not meaningful. An unaligned spectrum procedure that was developed to estimate a signal coherence threshold and reveal concealed spectral lines in turbofan engine combustion noise is applied to fan and CROR acoustic data in this paper (also available as NASA/TM-2015-218865). The NASA Advanced Air Vehicles Program, Advanced Air Transport Technology Project, Aircraft Noise Reduction Subproject supported the current work. The fan and open rotor data were obtained under previous efforts supported by the NASA Quiet Aircraft Technology (QAT) Project and the NASA Environmentally Responsible Aviation (ERA) Project of the Integrated Systems Research Program in collaboration with GE Aviation, respectively. The overarching goal of the Advanced Air Transport (AATT) Project is to explore and develop technologies and concepts to revolutionize the energy efficiency and environmental compatibility of fixed wing transport aircrafts. These technological solutions are critical in reducing the impact of aviation on the environment even as this industry and the corresponding global transportation system continue to grow.

  11. Direct navigation on 3D rotational x-ray data acquired with a mobile propeller C-arm: accuracy and application in functional endoscopic sinus surgery

    van de Kraats, Everine B.; Carelsen, Bart; Fokkens, Wytske J.; Boon, Sjirk N.; Noordhoek, Niels; Niessen, Wiro J.; van Walsum, Theo


    Recently, three-dimensional (3D) rotational x-ray imaging has been combined with navigation technology, enabling direct 3D navigation for minimally invasive image guided interventions. In this study, phantom experiments are used to determine the accuracy of such a navigation set-up for a mobile C-arm with propeller motion. After calibration of the C-arm system, the accuracy is evaluated by pinpointing divots on a special-purpose phantom with known geometry. This evaluation is performed both with and without C-arm motion in between calibration and registration for navigation. The variation caused by each of the individual transformations in the calibration and registration process is also studied. The feasibility of direct navigation on 3D rotational x-ray images for functional endoscopic sinus surgery has been evaluated in a cadaver navigation experiment. Navigation accuracy was approximately 1.0 mm, which is sufficient for functional endoscopic sinus surgery. C-arm motion in between calibration and registration slightly degraded the registration accuracy by approximately 0.3 mm. Standard deviations of each of the transformations were in the range 0.15-0.31 mm. In the cadaver experiment, the navigation images were considered in good correspondence with the endoscopic images by an experienced ENT surgeon. Availability of 3D localization information provided by the navigation system was considered valuable by the ENT surgeon.

  12. Direct navigation on 3D rotational x-ray data acquired with a mobile propeller C-arm: accuracy and application in functional endoscopic sinus surgery

    Kraats, Everine B van de [Image Sciences Institute, University Medical Center Utrecht (Netherlands); Carelsen, Bart [Academic Medical Center Amsterdam, Medical Physics Department (Netherlands); Fokkens, Wytske J [Academic Medical Center Amsterdam, Department of Otorhinolaryngology (Netherlands); Boon, Sjirk N [Philips Medical Systems, Best (Netherlands); Noordhoek, Niels [Philips Medical Systems, Best (Netherlands); Niessen, Wiro J [Image Sciences Institute, University Medical Center Utrecht (Netherlands); Walsum, Theo van [Image Sciences Institute, University Medical Center Utrecht (Netherlands)


    Recently, three-dimensional (3D) rotational x-ray imaging has been combined with navigation technology, enabling direct 3D navigation for minimally invasive image guided interventions. In this study, phantom experiments are used to determine the accuracy of such a navigation set-up for a mobile C-arm with propeller motion. After calibration of the C-arm system, the accuracy is evaluated by pinpointing divots on a special-purpose phantom with known geometry. This evaluation is performed both with and without C-arm motion in between calibration and registration for navigation. The variation caused by each of the individual transformations in the calibration and registration process is also studied. The feasibility of direct navigation on 3D rotational x-ray images for functional endoscopic sinus surgery has been evaluated in a cadaver navigation experiment. Navigation accuracy was approximately 1.0 mm, which is sufficient for functional endoscopic sinus surgery. C-arm motion in between calibration and registration slightly degraded the registration accuracy by approximately 0.3 mm. Standard deviations of each of the transformations were in the range 0.15-0.31 mm. In the cadaver experiment, the navigation images were considered in good correspondence with the endoscopic images by an experienced ENT surgeon. Availability of 3D localization information provided by the navigation system was considered valuable by the ENT surgeon.

  13. Continuous preparation of nanoscale zero-valent iron using impinging stream-rotating packed bed reactor and their application in reduction of nitrobenzene

    Jiao, Weizhou; Qin, Yuejiao; Luo, Shuai; Feng, Zhirong; Liu, Youzhi


    Nanoscale zero-valent iron (nZVI) was continuously prepared by high-gravity reaction precipitation through a novel impinging stream-rotating packed bed (IS-RPB). Reactant solutions of FeSO4 and NaBH4 were conducted into the IS-RPB with flow rates of 60 L/h and rotating speed of 1000 r/min for the preparation of nZVI. As-prepared nZVI obtained by IS-RPB were quasi-spherical morphology and almost uniformly distributed with a particle size of 10-20 nm. The reactivity of nZVI was estimated by the degradation of 100 ml nitrobenzene (NB) with initial concentration of 250 mg/L. The optimum dosage of nZVI obtained by IS-RPB was 4.0 g/L as the NB could be completely removed within 10 min, which reduced 20% compared with nZVI obtained by stirred tank reactor (STR). The reduction of NB and production of aniline (AN) followed pseudo-first-order kinetics, and the pseudo-first-order rate constants were 0.0147 and 0.0034 s-1, respectively. Furthermore, the as-prepared nZVI using IS-RPB reactor in this work can be used within a relatively wide range pH of 1-9.

  14. Thermal analysis and control of electronic equipment

    Kraus, A. D.; Bar-Cohen, A.

    The application of thermal control techniques to the cooling of electronic components is examined from theoretical and practical points of view. The electronic-thermal-control (ETC) problem and the physical and conceptual restraints on its solution are characterized, with a focus on the goal of system reliability. The fundamentals of heat transfer and fluid mechanics are discussed, including steady-state and transient conduction, convection, radiation, phase-change processes, contact resistance, heat exchangers, air handling, and dimensional analysis. Mathematical models and empirical correlations are explored for such ETC techniques as direct air cooling, extended surfaces, cold plates, immersion cooling, heat pipes, and thermoelectric coolers. Specific ETC applications to inertial equipment, transistors, vacuum tubes, microwave equipment, microelectronics, and printed-circuit boards are considered.

  15. Miscellaneous equipment in commercial buildings: The inventory, utilization, and consumption by equipment type

    Pratt, R.G.; Williamson, M.A.; Richman, E.E.


    The nature of the miscellaneous equipment (devices other than permanently installed lighting and those used for space conditioning) in commercial buildings is diverse, comprising a wide variety of devices that are subject to varied patterns of use. This portion of the commercial load is frequently underestimated, and widely hypothesized to be growing. These properties make it a particularly difficult load to characterize for purposes of demand-side management. In the End-Use Load and Consumer Assessment Program (ELCAP), over 100 commercial sites in the Pacific Northwest have been metered at the end-use level for several years. Detailed inspections of the equipment in them have also been conducted. This paper describes how the ELCAP data have been used to estimate three fundamental properties of the various types of equipment in several classes of commercial buildings: (1) the installed capacity per unit floor area, (2) utilization of the equipment relative to the installed capacity, and (3) the resulting energy consumption by building type and for the Pacific Northwest commercial sector as a whole. Applications for the results include assessment of conservation potential, prediction of equipment loads from survey data, estimating equipment loads for energy audits, targeting of conservation technology development, and disaggregating building total or mixed end-use data. 4 tabs., refs.

  16. Rotating Reverse-Osmosis for Water Purification

    Lueptow, RIchard M.


    A new design for a water-filtering device combines rotating filtration with reverse osmosis to create a rotating reverse- osmosis system. Rotating filtration has been used for separating plasma from whole blood, while reverse osmosis has been used in purification of water and in some chemical processes. Reverse- osmosis membranes are vulnerable to concentration polarization a type of fouling in which the chemicals meant not to pass through the reverse-osmosis membranes accumulate very near the surfaces of the membranes. The combination of rotating filtration and reverse osmosis is intended to prevent concentration polarization and thereby increase the desired flux of filtered water while decreasing the likelihood of passage of undesired chemical species through the filter. Devices based on this concept could be useful in a variety of commercial applications, including purification and desalination of drinking water, purification of pharmaceutical process water, treatment of household and industrial wastewater, and treatment of industrial process water. A rotating filter consists of a cylindrical porous microfilter rotating within a stationary concentric cylindrical outer shell (see figure). The aqueous suspension enters one end of the annulus between the inner and outer cylinders. Filtrate passes through the rotating cylindrical microfilter and is removed via a hollow shaft. The concentrated suspension is removed at the end of the annulus opposite the end where the suspension entered.

  17. A magnetic levitation rotating plate model based on high-Tc superconducting technology

    Zheng, Jun; Li, Jipeng; Sun, Ruixue; Qian, Nan; Deng, Zigang


    With the wide requirements of the training aids and display models of science, technology and even industrial products for the public like schools, museums and pleasure grounds, a simple-structure and long-term stable-levitation technology is needed for these exhibitions. Opportunely, high temperature superconducting (HTS) technology using bulk superconductors indeed has prominent advantages on magnetic levitation and suspension for its self-stable characteristic in an applied magnetic field without any external power or control. This paper explores the feasibility of designing a rotatable magnetic levitation (maglev) plate model with HTS bulks placed beneath a permanent magnet (PM) plate. The model is featured with HTS bulks together with their essential cryogenic equipment above and PMs below, therefore it eliminates the unclear visual effects by spray due to the low temperature coolant such as liquid nitrogen (LN2) and additional levitation weight of the cryogenic equipment. Besides that, a matched LN2 automation filling system is adopted to help achieving a long-term working state of the rotatable maglev plate. The key low-temperature working condition for HTS bulks is maintained by repeatedly opening a solenoid valve and automatically filling LN2 under the monitoring of a temperature sensor inside the cryostat. With the support of the cryogenic devices, the HTS maglev system can meet all requirements of the levitating display model for exhibitions, and may enlighten the research work on HTS maglev applications.

  18. A prototype harvester for short-rotation plantations

    James A. Mattson; Michael A. Wehr


    A promising approach to increasing the supply of wood fiber for pulp and energy is short-rotation intensively cultured (SRIC) forestry. To apply the principles of agriculture to the growing of wood fiber, designers of harvesting equipment must consider a unique set of operating criteria. This paper summarizes the design criteria relevant to the SRIC concept and...

  19. Laboratory Equipment Type Fiber Optic Refractometer

    E. F. Carome; M. Benca; L. Ovsenik; J. Turan


    Using fiber optics and micro optics technologies we designed an innovative fiber optic index of refraction transducer that has unique properties. On the base of this transducer a laboratory equipment type fiber optic refractometer was developed for liquid index of refraction measurements. Such refractometer may be used for medical, pharmaceutical, industrial fluid, petrochemical, plastic, food, and beverage industry applications. For example, it may be used for measuring the concentrations of...

  20. Delaying an Overhaul & Ship’s Equipment.


    Virginia A. "Survival Distributions: Reliability Applications in the Biomedical Sciences, John Wiley & Sons, Inc., New York, 197r, H. i~bs, Norma ...Daniel ani Hibbs, Norma , "Facturs Underlying Recent Trends in the Operational Availability of Shipboard Equipment (Material Support Study...School, Feb 23 25, 1978). AD A071 472 ChesaePaek Plane Hotel . St Los Missouri, March 1&20. 1977). AD A042 222 -2- 1r PR 214 PP 226 PP 241 Weinland

  1. Information technology equipment cooling system

    Schultz, Mark D.


    According to one embodiment, a system for removing heat from a rack of information technology equipment may include a sidecar indoor air to liquid heat exchanger that cools warm air generated by the rack of information technology equipment. The system may also include a liquid to liquid heat exchanger and an outdoor heat exchanger. The system may further include configurable pathways to connect and control fluid flow through the sidecar heat exchanger, the liquid to liquid heat exchanger, the rack of information technology equipment, and the outdoor heat exchanger based upon ambient temperature and/or ambient humidity to remove heat from the rack of information technology equipment.

  2. Tax Adjusted for Imported Equipment


    @@ Ministry of Finance, Central Administration of Customs, and State Administration of Taxation of P.R. of China jointly issued a "Notice on the Lists Related to the Interim Provisions on the Adjustment of Import Tax Policy on Major Technical Equipment" (the Notice) on April 13rd to adjust the list of equipment catalog and merchandise attached to the "Interim Provisions on the Import Tax Policy on Major Technical Equipment", as well as the preferential scope and extent of the import tax on a number of major technical equipment.

  3. Chaotic rotation of Hyperion?

    Binzel, R. P.; Green, J. R.; Opal, C. B.


    Thomas et al. (1984) analyzed 14 Voyager 2 images of Saturn's satellite Hyperion and interpreted them to be consistent with a coherent (nonchaotic) rotation period of 13.1 days. This interpretation was criticized by Peale and Wisdom (1984), who argued that the low sampling frequency of Voyager data does not allow chaotic or nonchaotic rotation to be distinguished. New observations obtained with a higher sampling frequency are reported here which conclusively show that the 13.1 day period found by Thomas et al. was not due to coherent rotation.

  4. A rotating quantum vacuum

    Lorenci, V.A. de; Svaiter, N.F. [Centro Brasileiro de Pesquisas Fisicas (CBPF), Rio de Janeiro, RJ (Brazil)


    It was investigated which mapping has to be used to compare measurements made in a rotating frame to those made in an inertial frame. Using a non-Galilean coordinate transformation, the creation-annihilation operators of a massive scalar field in the rotating frame are not the same as those of an inertial observer. This leads to a new vacuum state(a rotating vacuum) which is a superposition of positive and negative frequency Minkowski particles. Polarization effects in circular accelerators in the proper frame of the electron making a connection with the inertial frame point of view were analysed. 65 refs.

  5. Power Product Equipment Technician: Equipment Systems. Teacher Edition. Student Edition.

    Hilley, Robert

    This packet contains teacher and student editions on the topic of equipment systems, intended for the preparation of power product equipment technicians. This publication contains seven units: (1) principles of power transmission; (2) mechanical drive systems; (3) principles of fluid power; (4) hydraulic and pneumatic drive systems; (5) wheel and…

  6. Relativistic Rotation: A Comparison of Theories

    Klauber, R D


    Alternative theories of relativistic rotation considered viable as of 2004 are compared in the light of experiments reported in 2005. En route, the contentious issue of simultaneity choice in rotation is resolved by showing that only one simultaneity choice, the one possessing continuous time, gives rise, via the general relativistic equation of motion, to the correct Newtonian limit Coriolis acceleration. In addition, the widely dispersed argument purporting to justify an absolute Lorentz contraction in rotation is analyzed and found lacking for more than one reason. It is argued that only via experiment can we know whether such absolute contraction exists in rotation or not. The Coriolis/simultaneity correlation, and the results of the 2005 experiments, support the Selleri theory as being closest to the truth, though it is incomplete in a more general applicability sense, because it does not provide a global metric. Two alternatives, a modified Klauber approach and a Selleri-Klauber hybrid, are presented wh...

  7. Fourier analysis for rotating-element ellipsometers.

    Cho, Yong Jai; Chegal, Won; Cho, Hyun Mo


    We introduce a Fourier analysis of the waveform of periodic light-irradiance variation to capture Fourier coefficients for multichannel rotating-element ellipsometers. In this analysis, the Fourier coefficients for a sample are obtained using a discrete Fourier transform on the exposures. The analysis gives a generic function that encompasses the discrete Fourier transform or the Hadamard transform, depending on the specific conditions. Unlike the Hadamard transform, a well-known data acquisition method that is used only for conventional multichannel rotating-element ellipsometers with line arrays with specific readout-mode timing, this Fourier analysis is applicable to various line arrays with either nonoverlap or overlap readout-mode timing. To assess the effects of the novel Fourier analysis, the Fourier coefficients for a sample were measured with a custom-built rotating-polarizer ellipsometer, using this Fourier analysis with various numbers of scans, integration times, and rotational speeds of the polarizer.

  8. Rotational Laser Cooling of MgH+ Ions and Rotational Rate Measurements

    Hansen, Anders Kragh; Staanum, Peter; Højbjerre, Klaus

    A method of laser cooling vibrationally and translationally cold trapped MgH+ ions to the rotational ground state using optical pumping was recently demonstrated in our group [1]. This method relies on the 293 K blackbody radiation to redistribute population among the rotational states, while...... chemists making electronic structure calculations, since the electric dipole moments that can be extracted from the results will provide information not present in pectroscopic data. [1] P. F. Staanum, K. Højbjerre, P. S. Skyt, A. K. Hansen, and M. Drewsen. Rotational laser cooling of vibrationally...... exciting a single rovibrational transition within the X1Σ+ electronic ground state for optical pumping into the rovibrational ground state. To model the expected rotational state distributions after the application of the laser beam, one has to know the various rotational transitions rates in the present...

  9. 气体钻井设备在新疆煤层气项目中的应用%Application of gas drilling equipment in Xinjiang coalbed methane project



    Most coalbed methane reservoirs are featured by low pressure, low permeability and low saturation, etc. Circulation loss is a frequent problem encountered in the process of coal seam drilling. On the other hand, conventional stimulation and blowdown recovery techniques are hard to work. Application of gas drilling equipment in Xinjiang coalbed methane project for aerated underbalanced drilling and methane displacement with nitrogen has shown very good effect in coping with circulation loss problem and improving coalbed methane recovery.%大多数煤层气藏具有低压、低渗、低饱和度等特点,这使得一方面在煤层钻井过程中容易出现井漏问题,另一方面使得常规增产改造和降压开发技术难于奏效.通过对气体钻井设备在新疆煤层气项目中充气欠平衡钻井和注氮驱替甲烷施工的分析,表明气体钻井设备对于解决地层漏失和提高煤层气的采收率具有很好的现场应用效果.

  10. New weed control strategies in maize considering narrow crop rotations with maize, greater ALSresistance in common weeds and application restrictions with regard to active substance

    Ewert, Katrin


    Full Text Available Many herbicides with different HRAC-groups are available for weed control in maize. Because of narrow maize crop rotation summer weeds and warmth loving weeds are encouraged. On the other hand the new confirmed cases of an ALS target site resistance in the weed species Echinochloa crus-galli and Amaranthus retroflexus in Brandenburg, Stellaria media in Saxony and Matricaria recutita and Tripleurospermum perforatum in Brandenburg and Thuringia, warn that in the future the sulfonylureas must be used only according to the management of herbicide resistance. In this way the selection of resistant weed biotypes will be prevented. Moreover in protected water areas it may be a requirement to reduce and to substitute the input of some active substances, for example terbuthylazine and bentazon. The control of E. crus-galli and P. convolvulus with non-sulfonylurea or/and non-terbuthylazine herbicides according to management of herbicide resistance will be discussed.

  11. Enhanced Airport Surface Detection Equipment Applications,


    determined by the approach controller in the IFR room. The local controller must fit...specifically departures and arrivals under Instrument Flight Rule ( IFR ) or Special Visual Flight Rule (SVFR) conditions, and whether ASDE-3 could be utilized

  12. Improved methods for Feynman path integral calculations of vibrational-rotational free energies and application to isotopic fractionation of hydrated chloride ions.

    Mielke, Steven L; Truhlar, Donald G


    We present two enhancements to our methods for calculating vibrational-rotational free energies by Feynman path integrals, namely, a sequential sectioning scheme for efficiently generating random free-particle paths and a stratified sampling scheme that uses the energy of the path centroids. These improved methods are used with three interaction potentials to calculate equilibrium constants for the fractionation behavior of Cl(-) hydration in the presence of a gas-phase mixture of H(2)O, D(2)O, and HDO. Ion cyclotron resonance experiments indicate that the equilibrium constant, K(eq), for the reaction Cl(H(2)O)(-) + D(2)O right harpoon over left harpoon Cl(D(2)O)(-) + H(2)O is 0.76, whereas the three theoretical predictions are 0.946, 0.979, and 1.20. Similarly, the experimental K(eq) for the Cl(H(2)O)(-) + HDO right harpoon over left harpoon Cl(HDO)(-) + H(2)O reaction is 0.64 as compared to theoretical values of 0.972, 0.998, and 1.10. Although Cl(H(2)O)(-) has a large degree of anharmonicity, K(eq) values calculated with the harmonic oscillator rigid rotator (HORR) approximation agree with the accurate treatment to within better than 2% in all cases. Results of a variety of electronic structure calculations, including coupled cluster and multireference configuration interaction calculations, with either the HORR approximation or with anharmonicity estimated via second-order vibrational perturbation theory, all agree well with the equilibrium constants obtained from the analytical surfaces.

  13. Rotator Cuff Injuries

    ... cuff are common. They include tendinitis, bursitis, and injuries such as tears. Rotator cuff tendons can become ... cuff depends on age, health, how severe the injury is, and how long you've had the ...

  14. Fractal Aggregation Under Rotation

    WU Feng-Min; WU Li-Li; LU Hang-Jun; LI Qiao-Wen; YE Gao-Xiang


    By means of the Monte Carlo simulation, a fractal growth model is introduced to describe diffusion-limited aggregation (DLA) under rotation. Patterns which are different from the classical DLA model are observed and the fractal dimension of such clusters is calculated. It is found that the pattern of the clusters and their fractal dimension depend strongly on the rotation velocity of the diffusing particle. Our results indicate the transition from fractal to non-fractal behavior of growing cluster with increasing rotation velocity, i.e. for small enough angular velocity ω the fractal dimension decreases with increasing ω, but then, with increasing rotation velocity, the fractal dimension increases and the cluster becomes compact and tends to non-fractal.

  15. Fractal Aggregation Under Rotation

    WUFeng-Min; WULi-Li; LUHang-Jun; LIQiao-Wen; YEGao-Xiang


    By means of the Monte Carlo simulation, a fractal growth model is introduced to describe diffusion-limited aggregation (DLA) under rotation. Patterns which are different from the classical DLA model are observed and the fractal dimension of such clusters is calculated. It is found that the pattern of the clusters and their fractal dimension depend strongly on the rotation velocity of the diffusing particle. Our results indicate the transition from fractal to non-fractal behavior of growing cluster with increasing rotation velocity, i.e. for small enough angular velocity ω; thefractal dimension decreases with increasing ω;, but then, with increasing rotation velocity, the fractal dimension increases and the cluster becomes compact and tends to non-fractal.

  16. Solar rotation gravitational moments

    A. Ajabshirizadeh


    Full Text Available   Gravitational multipole moments of the Sun are still poorly known. Theoretically, the difficulty is mainly due to the differential rotation for which the velocity rate varies both on the surface and with the depth. From an observational point of view, the multipole moments cannot be directly measured. However, recent progresses have been made proving the existence of a strong radial differential rotation in a thin layer near the solar surface (the leptocline. Applying the theory of rotating stars, we will first compute values of J2 and J4 taking into account the radial gradient of rotation, then we will compare these values with the existing ones, giving a more complete review. We will explain some astrophysical outcomes, mainly on the relativistic Post Newtonian parameters. Finally we will conclude by indicating how space experiments (balloon SDS flights, Golf NG, Beppi-Colombo, Gaia... will be essential to unambiguously determine these parameters.

  17. Flue gas desulfurization by rotating beds

    Gardner, N.; Keyvani, M.; Coskundeniz, A.


    The operating and mass transfer characteristics of rotating foam metal beds were studied to determine the potential for flue gas desulfurization. This is a final technical report on the work supported by DOE [number sign]FG22-87-PC79924. The report is divided into two sections, Part 1 deals primarily with the operating characteristics of rotating beds, and Part 2 covers the mass transfer characteristics of S0[sub 2] absorption in water-lime slurries. Rotating foam metal beds are in essence packed towers operated in high gravitational fields. The foam metal bed is in the form of a cylindrical donut, or torus, and is rotated to produced the high centrifugal forces. The liquid phase enters the bed at the inner surface of the torus and is pulled by the field through the bed. Gas flows countercurrent to the liquid. The bed packing can have a very large specific surface areas and not flood. Possible benefits include much smaller height of a transfer unit resulting in smaller equipment and supporting structures, reduced solvent inventory, faster response with improved process control, reduced pressure drop, and shorter startup and shut-down times. This work is concerned broadly with the operating characteristics of rotating beds, the objectives being to (1) determine the pressure drop through the rotating bed; (2) determine the power required to operate the beds, (3) investigate the residence time distribution of the liquid phase in the beds; and (4) determine the mass transfer coefficients of S0[sub 2] absorption. Three packings of differing specific surface areas were studied, with areas ranging from 656 to 2952 m[sub 2]/m[sub 3]. Liquid flow rates to 36 kg/s*m[sub 2], gas flow rate to 2.2 kg/s*m[sub 2], and gravitational fields to 300 g were covered in this study.

  18. [Effects of nitrogen application rates and straw returning on nutrient balance and grain yield of late sowing wheat in rice-wheat rotation].

    Zhang, Shan; Shi, Zu-liang; Yang, Si-jun; Gu, Ke-jun; Dai, Ting-bo; Wang, Fei; Li, Xiang; Sun, Ren-hua


    Field experiments were conducted to study the effects of nitrogen application rates and straw returning on grain yield, nutrient accumulation, nutrient release from straw and nutrient balance in late sowing wheat. The results showed that straw returning together with appropriate application of nitrogen fertilizer improved the grain yield. Dry matter, nitrogen, phosphorus and potassium accumulation increased significantly as the nitrogen application rate increased. At the same nitrogen application rate (270 kg N · hm(-2)), the dry matter, phosphorus and potassium accumulation of the treatment with straw returning were higher than that without straw returning, but the nitrogen accumulation was lower. Higher-rate nitrogen application promoted straw decomposition and nutrient release, and decreased the proportion of the nutrient released from straw after jointing. The dry matter, phosphorus and potassium release from straw showed a reverse 'N' type change with the wheat growing, while nitrogen release showed a 'V' type change. The nutrient surplus increased significantly with the nitrogen application rate. At the nitrogen application rate for the highest grain yield, nitrogen and potassium were surplus significantly, and phosphorus input could keep balance. It could be concluded that as to late sowing wheat with straw returning, applying nitrogen at 257 kg · hm(-2) and reducing potassium fertilizer application could improve grain yield and reduce nutrients loss.

  19. Rotational spectrum of phenylglycinol

    Simão, Alcides; Peña, Isabel; Cabezas, Carlos; Alonso, José L.


    Solid samples of phenylglycinol were vaporized by laser ablation and investigated through rotational spectroscopy in a supersonic expansion using two different techniques: chirped pulse Fourier transform microwave spectroscopy and narrow band molecular beam Fourier transform microwave spectroscopy. One conformer, bearing an O-H···N and an N-H···π intramolecular hydrogen bonds, could be successfully identified by comparison of the experimental rotational and 14N nuclear quadruple coupling constants with those predicted theoretically.

  20. Earth rotation and geodynamics

    Bogusz Janusz; Brzezinski Aleksander; Kosek Wieslaw; Nastula Jolanta


    This paper presents the summary of research activities carried out in Poland in 2011-2014 in the field of Earth rotation and geodynamics by several Polish research institutions. It contains a summary of works on Earth rotation, including evaluation and prediction of its parameters and analysis of the related excitation data as well as research on associated geodynamic phenomena such as geocentre motion, global sea level change and hydrological processes. The second part of the paper deals wit...