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Sample records for preparing technically pure

  1. Gas solid techniques for preparation of pure lanthanum hexaboride

    Institute of Scientific and Technical Information of China (English)

    Mukherjee; A.; Gulnar; A.K.; Sahoo; D.K.; Krishnamurthy; N.

    2012-01-01

    The processes reported for the preparation of lanthanum hexaboride (LaB6) from lanthanum oxide involve the use of carbon either elemental or in the form of boron carbide or elemental boron itself as reducing agents, fused salts at high temperatures or reactions which require the product boride to be leached out. Each of these techniques either increases the process costs and/or increases chances of contamination in fi-nal product. Pure LaB6 can best be prepared by a reaction which produces a gaseous byprodu...

  2. Production of highly pure einsteinium and fermium preparations

    Energy Technology Data Exchange (ETDEWEB)

    Andreev, O.I.; Tarasov, V.A.; Zotov, E.A.; Baranov, A.Yu. [Federal State Unitary Enterprise ' ' State Scientific Center of Russian Federation Research Institute of Atomic Reactors' ' (Russian Federation)

    2004-07-01

    Highly pure einsteinium and fermium preparations are in increased demand due to the progress of the following fields of modern sciences: Fundamental and applied nuclear physics. Heavy actinides are necessary for detailed study of structure and decay of a nucleus, as well as initial material both for nuclear synthesis of new superheavy elements and for manufacturing radioactive radiation sources. Fundamental and applied radiochemistry. Einsteinium and fermium preparations are required to investigate chemical properties of these hard-to-obtain elements and to improve technology of their recovery and purification. Nuclear medicine. Biologically active compounds labeled with alpha- emitting einsteinium and fermium may be applied in prospect for a radioimmunotherapy of oncological diseases. The principal method of einsteinium and fermium production is irradiation of curium or californium isotopes in a high-flux nuclear reactor. Large-scale production of transplutonium elements at RIAR enables also to produce regularly significant quantities of einsteinium and fermium. (orig.)

  3. Preparation and characterization of free-standing pure porphyrin nanoparticles

    Indian Academy of Sciences (India)

    Arun Kumar Perepogu; Prakriti Ranjan Bangal

    2008-09-01

    Preparation and characterization of absolutely pure and stable nanoparticles of 5,10,15,20-meso-tetrakis phenyl porphyrin (TPP) and catalytically repute 5,10,15,20-meso-tetrakis pentaflurophenyl porphyrin (H2F20TPP) by improved ‘reprecipitation method’ is described. The innovation of this modified `reprecipitation method’ lies on the judicial selection of organic solvent and amount of porphyrin solution to be injected in the aqueous media. Exactly similar process produces relatively small nanoparticles for TPP than that of H2F20TPP while the stability of the H2F20TPP nanoparticles is bit higher than nanoparticles of TPP. Absorption and emission spectra reveal that the formation of nanoparticles for both the cases is induced by J- and H-type aggregation. DFT calculations predict the optimized geometries and frontier molecular orbital, which favours the strength of face-to-face interaction with neighbour molecules to be more facile for TPP than that of H2F20TPP helping the latter to form bigger and relatively more stable and free-standing nanoparticles. The use of no other compounds except dichloromethane, a highly volatile organic solvent and respective porphyrins give absolutely pure nanoparticles. This improved method will lead to produce organic nanoparticles of -conjugated systems easily and efficiently.

  4. Grain intermodal terminals: evaluation of pure technical efficiency by Data Envelopment Analysis

    Directory of Open Access Journals (Sweden)

    Maria Gabriela Mendonça Peixoto

    Full Text Available Abstract This paper aimed to verify if terminals with productive efficiency also have pure technical efficiency, using DEA (Data Envelopment Analysis technique. The research approach was the qualitative-quantitative or mixed, with exploratory purpose; the research method defined was the case study (multicases; data were collected through interviews using a structured questionnaire and non-probability for convenience sampling. While the application of Charnes, Cooper and Rhodes (CCR model observed that only three (4, 7 and 11, of the twelve analyzed Decision Making Units (DMUs have total technical efficiency, through Banker, Charnes and Cooper (BCC model, it was possible to observe that these terminals were the only ones with pure technical efficiency. The three inefficient DMUs (1, 2 and 12 showed pure technical efficiency, suggesting that these terminals might present probable scale operations’ inefficiency, aspect not addressed in this paper.

  5. Preparation for Ultra High Pure Indium Metal for Optoelectronic Applications

    Directory of Open Access Journals (Sweden)

    Shashwat V. Joshi

    2014-11-01

    Full Text Available Ultra high pure Indium metal is extensively used in optoelectronic devices. Indium and its alloys become potential candidates in aerospace, defense and communication sectors. Purification of Indium has been done by Instrolec-200 Refiner followed by Directional Melting/ Freezing and Solidification Systems. Major targeted impurities are Metallic impurities Ag, Al, As, Bi, Ca, Cu, Fe, Ga, Ge, Mg, Pb, Sb, Si, Sn, and Zn. Purified Indium is characterized by analytical techniques Inductively Coupled Plasma- Optical Emission Spectrophotometry and Inductively Coupled Plasma- Mass Spectrometry.

  6. Preparation of biocompatible structural gradient coatings on pure titanium

    Institute of Scientific and Technical Information of China (English)

    TANG Guang-xin; ZHANG Ren-ji; YAN Yong-nian

    2004-01-01

    In order to overcome the poor osteo-inductive properties of titanium implant, some methods have been used. The efforts to improve implant biocompatibility and durability by applying a hybrid technique of composite oxidation (pre-anodic and micro-arc oxidation) and hydrothermal treatment were described. Pure titanium was used as the substrate material. An oxalic acid was used as the electrolyte for the pre-anodic oxidation. A calcium and phosphate salt solution was acted as the electrolyte of micro-arc oxidation and the common pure water was used for hydrothermal treatment. X-ray diffraction (XRD), and scanning electron microscopy (SEM) have been used to investigate the microstructure and morphology of the coatings. The results show that a compact TiO2 film can be made by pre-anodic oxidation, which is effective as chemical barriers against the in-vivo release of metal ions from the implants. A porous TiO2 coating can be produced by micro-arc oxidation on titanium plate, which is beneficial to bone tissue growth and enhancing anchorage of implant to bone. De-calcium HA can be formed on the coating using hydrothermal treatment, which is similar with the primary component of bone and has a very good osteo-inductivity.The porous gradient titania coating made by the hybrid oxidation and hydrothermal treatment should show good biocompatibility in the environment of the human body.

  7. RF Sputtering for preparing substantially pure amorphous silicon monohydride

    Science.gov (United States)

    Jeffrey, Frank R.; Shanks, Howard R.

    1982-10-12

    A process for controlling the dihydride and monohydride bond densities in hydrogenated amorphous silicon produced by reactive rf sputtering of an amorphous silicon target. There is provided a chamber with an amorphous silicon target and a substrate therein with the substrate and the target positioned such that when rf power is applied to the target the substrate is in contact with the sputtering plasma produced thereby. Hydrogen and argon are fed to the chamber and the pressure is reduced in the chamber to a value sufficient to maintain a sputtering plasma therein, and then rf power is applied to the silicon target to provide a power density in the range of from about 7 watts per square inch to about 22 watts per square inch to sputter an amorphous silicon hydride onto the substrate, the dihydride bond density decreasing with an increase in the rf power density. Substantially pure monohydride films may be produced.

  8. A new nanospray drying method for the preparation of nicergoline pure nanoparticles

    Energy Technology Data Exchange (ETDEWEB)

    Martena, Valentina; Censi, Roberta [University of Camerino, School of Pharmacy (Italy); Hoti, Ela; Malaj, Ledjan [University of Tirana, Department of Pharmacy (Albania); Di Martino, Piera, E-mail: piera.dimartino@unicam.it [University of Camerino, School of Pharmacy (Italy)

    2012-06-15

    Three different batches of pure nanoparticles (NPs) of nicergoline (NIC) were prepared by spray drying a water:ethanol solution by a new Nano Spray Dryer Buechi B-90. Spherical pure NPs were obtained, and several analytical techniques such as differential scanning calorimetry and X-ray powder diffractometry permitted to assess their amorphous character. A comparison of the solubility, intrinsic dissolution, and drug release of original particles and pure amorphous NPs were determined, revealing an interesting improvement of biopharmaceutical properties of amorphous NPs, due to both amorphous properties and nanosize dimensions. Since in a previous work, the high-thermodynamic stability of amorphous NIC was demonstrated, this study is addressed toward the formulation of NIC as pure amorphous NPs.

  9. Effect of Preparation and Storage Conditions on Physical and Chemical Properties of Puree, Puree Juices and Cloudy Juices Obtained from Pumpkin with Added Japanese Quince and Strawberries

    Directory of Open Access Journals (Sweden)

    Agnieszka NAWIRSKA-OLSZAŃSKA

    2016-06-01

    Full Text Available When evaluated in terms of taste, smell or active ingredients, pumpkin in itself is not very attractive as a raw material. Hence it seems recommendable to blend pumpkin with other fruits. The pumpkin chosen for the experiments was of the variety ‘Karowita’. The aim of the study was to compare the physical and chemical properties of pumpkin samples based on different storage conditions. Pumpkin puree, puree juice and cloudy juices containing Japanese quince and strawberries were evaluated for their physical and chemical properties initially and after three months storage at temperatures of 4 °C and 30 °C. Cloudy juices were prepared with pectolytic preparation. The extract dry matter in all the samples was at a similar level. Puree and puree juice had considerably higher viscosity than cloudy juices. The highest quantities of bioactive compounds were detected in slightly processed samples (puree, puree juice and cloudy juices stored at 4 °C. Increased content of polyphenols was observed in puree and puree juice after storage. However, in the remaining samples, there was observed a decrease in the content of the compounds. A considerable decrease in carotenoids took place in samples subjected to pressing, where the amount of assayed carotenoids in puree was 5.24 mg/100 g fresh matter (FM, 4.15 mg/100 g FM in puree juice, and 0.18-0.47 mg/100 g FM in cloudy juices. The pressing also caused a significant decrease in colour parameters. Three months of storage showed markedly decreased contents of carotenoids and vitamin C.

  10. Structural properties of pure and Fe-doped Yb films prepared by vapor condensation

    Energy Technology Data Exchange (ETDEWEB)

    Rojas-Ayala, C., E-mail: chachi@cbpf.br [Centro Brasileiro de Pesquisas Físicas, Rio de Janeiro 22290-180, RJ (Brazil); Facultad de Ciencias Físicas, Universidad Nacional Mayor de San Marcos, Lima, P.O.B. 14-149, Lima 14 (Peru); Passamani, E.C. [Departamento de Física, Universidade Federal do Espírito Santo, Vitória 29075-910, ES (Brazil); Suguihiro, N.M. [Centro Brasileiro de Pesquisas Físicas, Rio de Janeiro 22290-180, RJ (Brazil); Litterst, F.J. [Centro Brasileiro de Pesquisas Físicas, Rio de Janeiro 22290-180, RJ (Brazil); Institut für Physik der Kondensierten Materie, Technische Universität Braunschweig, 38106 Braunschweig (Germany); Baggio Saitovitch, E. [Centro Brasileiro de Pesquisas Físicas, Rio de Janeiro 22290-180, RJ (Brazil)

    2014-10-15

    Ytterbium and iron-doped ytterbium films were prepared by vapor quenching on Kapton substrates at room temperature. Structural characterization was performed by X-ray diffraction and transmission electron microscopy. The aim was to study the microstructure of pure and iron-doped films and thereby to understand the effects induced by iron incorporation. A coexistence of face centered cubic and hexagonal close packed-like structures was observed, the cubic-type structure being the dominant contribution. There is an apparent thickness dependence of the cubic/hexagonal relative ratios in the case of pure ytterbium. Iron-clusters induce a crystalline texture effect, but do not influence the cubic/hexagonal volume fraction. A schematic model is proposed for the microstructure of un-doped and iron-doped films including the cubic- and hexagonal-like structures, as well as the iron distribution in the ytterbium matrix. - Highlights: • Pure and Fe-doped Yb films have been prepared by vapor condensation. • Coexistence of fcc- and hcp-type structures was observed. • No oxide phases have been detected. • Fe-clustering does not affect the fcc/hcp ratio, but favors a crystalline texture. • A schematic model is proposed to describe microscopically the microstructure.

  11. pH-responsive lyotropic liquid crystals for the preparation of pure cubic zirconia nanoparticles

    Science.gov (United States)

    He, Wei Yan; Liu, Jin Rong; He, Zhang; Cao, Zhen Zhu; Li, Cai Hong; Gao, Yan Fang

    2016-07-01

    We present a lyotropic liquid crystal system consisting of SDS/Triton X-100/water at 25 °C. This system is respond to pH variations with a phase switch. When pH is altered from alkaline (pH 13) to acidic (pH 2) conditions, phase change occurs from a bicontinuous hexagonal phase to a partially hexagonal phase until it disappears. The hexagonal phase under alkaline conditions is stable. Thus, this system is an ideal candidate for the preparation of pure cubic ZrO2 nanoparticles. XRD results confirm that the as-synthesized powder is composed of pure cubic ZrO2. These nanoparticles also exhibit a thermal stability of up to 800 °C. The size and morphological characteristics of the nanoparticles are greatly affected by ZrOCl2 concentration. The mechanism of zirconia nanoparticle synthesis in a lyotropic hexagonal phase was proposed.

  12. pH-responsive lyotropic liquid crystals for the preparation of pure cubic zirconia nanoparticles

    Energy Technology Data Exchange (ETDEWEB)

    He, Wei Yan; Liu, Jin Rong; He, Zhang; Cao, Zhen Zhu; Li, Cai Hong; Gao, Yan Fang [Inner Mongolia University of Technology, School of Chemical Engineering, Hohhot (China)

    2016-07-15

    We present a lyotropic liquid crystal system consisting of SDS/Triton X-100/water at 25 C. This system is respond to pH variations with a phase switch. When pH is altered from alkaline (pH 13) to acidic (pH 2) conditions, phase change occurs from a bicontinuous hexagonal phase to a partially hexagonal phase until it disappears. The hexagonal phase under alkaline conditions is stable. Thus, this system is an ideal candidate for the preparation of pure cubic ZrO{sub 2} nanoparticles. XRD results confirm that the as-synthesized powder is composed of pure cubic ZrO{sub 2}. These nanoparticles also exhibit a thermal stability of up to 800 C. The size and morphological characteristics of the nanoparticles are greatly affected by ZrOCl{sub 2} concentration. The mechanism of zirconia nanoparticle synthesis in a lyotropic hexagonal phase was proposed. (orig.)

  13. Preparation and mechanism study of bulk pure rare-earth metals with amorphous and nanocrystalline structures

    Institute of Scientific and Technical Information of China (English)

    LI ErDong; SONG XiaoYan; ZHANG JiuXing; LU NianDuan

    2007-01-01

    The preparation and the mechanism study of bulk pure rare-earth metals with amorphous and nanocrystalline structures, which were produced by spark plasma sintering (SPS), were carried out in this paper. With different processing parameters, the amorphous, two phases of amorphous and nanocrystalline, and complete nanocrystalline microstructures have been obtained. The nano-grain sizes in the bulk nanocrystalline materials are found smaller than the original powder particles sizes, which may change the conventional viewpoint that the grains in the sintered bulk are generally coarser than the raw powder particles. The technique developed in the present work can be extended to the preparation of many other nano bulk metal materials, and thus enables the studies of the nano-size effects on the physical, chemical and mechanical properties of bulk nano materials.

  14. Preparing arbitrary pure states of spatial qudits with a single phase-only spatial light modulator

    CERN Document Server

    Solís-Prosser, M A; Varga, J J M; Rebón, L; Ledesma, S; Iemmi, C; Neves, L

    2013-01-01

    Spatial qudits are D-dimensional ($D\\geq 2$) quantum systems carrying information encoded in the discretized transverse momentum and position of single photons. We present a proof-of-principle demonstration of a method for preparing arbitrary pure states of such systems by using a single phase-only spatial light modulator (SLM). The method relies on the encoding of the complex transmission function corresponding to a given spatial qudit state onto a preset diffraction order of a phase-only grating function addressed at the SLM. Fidelities of preparation above 94% were obtained with this method, which is simpler, less costly, and more efficient than those that require two SLMs for the same purpose.

  15. Preparation and characterization of enamel coating on pure titanium as a hydrogen penetration barrier

    Energy Technology Data Exchange (ETDEWEB)

    Tao, Jie, E-mail: taojie@nuaa.edu.cn [College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, Jiangsu 210016 (China); Guo, Xunzhong [College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, Jiangsu 210016 (China); Huang, Zhendong [Graduate School of Human and Environmental Studies, Kyoto University, oshida-Nihonmatsu-Cho, Sakyo-Ku, Kyoto shi 606-8501 (Japan); Liu, Hongbing [Shanghai Aircraft Manufacturing Co,. Ltd, Shanghai 200436 (China); Wang, Tao [College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, Jiangsu 210016 (China)

    2013-06-15

    Highlights: ► The enamel coating was prepared by spin-coating and enameling method. ► The dense enamel coatings were chemically bonded with TA1 substrate. ► The coatings possessed better thermal shock resistance property. ► The coatings had excellent ball-dropping impact properties. ► The enamel coating exhibited a good barrier effect to hydrogen isotope penetration. -- Abstract: The enamel coating with a thickness of 90–110 × 10{sup −6} m was prepared on TA1 substrate by spin-coating and enameling to solve the problems of hydrogen isotope penetration for commercial pure titanium TA1. The microstructure and the interfacial morphology of the samples were characterized respectively by X-ray diffraction, optical and scanning electron microscopy. The profiles of main elements at the interface were analyzed by EDS line-scanning. The experimental results indicated that the dense enamel coatings were chemically bonded with TA1 substrate, and possessed better thermal shock resistance and ball-dropping impact properties. It was concluded from the results of hydrogen charging test with Vickers microhardness measurement and deuterium penetration experiments that the as-prepared dense enamel coating exhibited a good barrier effect to hydrogen isotope penetration.

  16. Improving Technical, Tactical and Psychological Preparation of Freestyle Wrestlers

    Directory of Open Access Journals (Sweden)

    Pakulin Serhij

    2016-12-01

    Full Text Available Objectives: 1 to justify the ways of improvement of training free style wrestlers to improve the results of their activities and competitive sports skills; 2 to identify the areas of improvement of psychological preparation and the structure of complex psycho-pedagogical methods for optimizing mental condition of free style wrestlers. Material and methods: The following methods were used in the study: analysis and synthesis of the scientific data of methodological literature; pedagogical supervision; survey (interview, questionnaire; analysis of freestyle wrestlers competitive activity; testing of physical and psychological fitness; pedagogical experiment; methods of mathematical and statistical analysis of research results. Results: it has been demonstrated that there is a necessity to improve technical, tactical and psychological preparation of freestyle fighters; the basic problems of the process have been defined. Conclusion: 1 the method of preparation of freestyle wrestlers has been grounded and the feasibility of its use for rapid making the best technical and tactical decisions in a competitive activity has been proved. It is proposed to include specific tactical training methods for each action and various combinations of basic actions into the coach program of wrestling; 2 the directions of improving psychological preparation and the structure of complex psychological and pedagogical methods of optimizing the mental condition of free style wrestlers are substantiated.

  17. Preparation and initial characterization of fluidized bed steam reforming pure-phase standards

    Energy Technology Data Exchange (ETDEWEB)

    Missimer, D. M.; Rutherford, R. L.

    2013-03-21

    Hanford is investigating the Fluidized Bed Steam Reforming (FBSR) process for their Low Activity Waste. The FBSR process offers a low-temperature continuous method by which liquid waste can be processed with the addition of clay into a sodium aluminosilicate (NAS) waste form. The NAS waste form is mainly comprised of nepheline (NaAlSiO{sub 4}), sodalite (Na{sub 8}[AlSiO{sub 4}]{sub 6}Cl{sub 2}), and nosean (Na{sub 8}[AlSiO{sub 4}]{sub 6}SO{sub 4}). Anions such as perrhenate (ReO{sub 4}{sup -}), pertechnetate (TcO{sub 4}{sup -}), and iodine (I{sup -}) are expected to replace sulfate in the nosean structure and/or chloride in the sodalite mineral structure (atomically bonded inside the aluminosilicate cages that these mineral structures possess). In the FBSR waste form, each of these phases can exist in a variety of solid solutions that differ from the idealized forms observed in single crystals in nature. The lack of understanding of the durability of these stoichiometric or idealized mineral phases complicates the ability to deconvolute the durability of the mixed phase FBSR product since it is a combination of different NAS phases. To better understand the behavior, fabrication and testing of the individual phases of the FBSR product is required. Analytical Development (AD) of the Science and Technology directorate of the Savannah River National Laboratory (SRNL) was requested to prepare the series of phase-pure standards, consisting of nepheline, nosean, and Cl, Re, and I sodalite. Once prepared, X-ray Diffraction (XRD) analyses were used to confirm the products were phase pure. These standards are being used for subsequent characterization studies consisting of the following: single-pass flow-through (SPFT) testing, development of thermodynamic data, and x-ray diffraction (XRD) calibration curves. In addition to the above mentioned phase-pure standards, AD was tasked with fabricating a mixed Tc-Re sodalite.

  18. Preparation of radiological effluent technical specifications for nuclear power plants. a guidance manual for users of standard technical specifications

    Energy Technology Data Exchange (ETDEWEB)

    Boegli, J.S.; Bellamy, R.R.; Britz, W.L.; Waterfield, R.L. (eds.)

    1978-10-01

    The purpose of this manual is to describe methods found acceptable to the staff of the U.S. Nuclear Regulatory Commission (NRC) for the calculation of certain key values required in the preparation of proposed radiological effluent Technical Specifications using the Standard Technical Specifications for light-water-cooled nuclear power plants. This manual also provides guidance to applicants for operating licenses for nuclear power plants in the preparation of proposed radiological effluent Technical Specifications or in preparing requests for changes to existing radiological effluent Technical Specifications for operating licenses. The manual additionally describes current staff positions on the methodology for estimating radiation exposure due to the release of radioactive materials in effluents and on the administrative control of radioactive waste treatment systems.

  19. The improvement of technical preparation of sprinters on the initial stage of sport training

    Directory of Open Access Journals (Sweden)

    Maleniuk T.V.

    2010-05-01

    Full Text Available Directions of perfection of technical preparation of sprinters are examined on the initial stage of the sporting training. The basic elements of technique at run are certain 100 meters. The system of criteria of estimation of technical preparedness of sprinters is developed. The certain lacks of technical preparedness are exposed. The method of improvement of technical preparation is developed and its efficiency is tested. The system of criteria of estimation of technical preparedness of sprinters is developed. A general tendency is exposed to their finding on middle, above average and to high levels.

  20. Comparison of emitted color by pure Gd2O3 prepared by two different methods by CIE coordinates

    Science.gov (United States)

    Tamrakar, Raunak Kumar; Bisen, D. P.; Upadhyay, Kanchan; Sahu, Manjulata; Sahu, Ishwar Prasad; Bramhe, N.

    2015-12-01

    Monoclinic and cubic Gd2O3 phosphors were prepared by using two different methods solution combustion synthesis and solid state reaction method. The present paper deals with comparison of specific color emitted by the pure Gd2O3 phosphors prepared by combustion synthesis and solid state reaction methods. The Commission International de I'Eclairage (CIE) coordinates for combustion synthesized Gd2O3 phosphor and for the solid state synthesized Gd2O3 phosphor X = 0.207 and Y = 0.206, and X = 0.29 and Y = 0.29 respectively.

  1. Anti-corrosion layer prepared by plasma electrolytic carbonitriding on pure aluminum

    Energy Technology Data Exchange (ETDEWEB)

    Wu, Jie; Zhang, Yifan; Liu, Run; Wang, Bin; Hua, Ming [Key Laboratory for Beam Technology and Materials Modification of Ministry of Education, College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875 (China); Beijing Radiation Center, Beijing 100875 (China); Xue, Wenbin, E-mail: xuewb@bnu.edu.cn [Key Laboratory for Beam Technology and Materials Modification of Ministry of Education, College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875 (China); Beijing Radiation Center, Beijing 100875 (China)

    2015-08-30

    Highlights: • PEC/N can be applied to low melting point metal. • The spectroscopic characterization of plasma discharge is investigated. • Electron concentration and electron temperature are evaluated for PEC/N. • Phase composition of the carbonitrided layer is determined. • PEC/N improves the corrosion resistance of aluminum greatly. - Abstract: In this paper, plasma electrolytic carbonitriding (PEC/N) method was applied to pure aluminum for the first time. The spectroscopic characterization of plasma discharge during PEC/N process was analyzed and the electron temperature was calculated in terms of optical emission spectroscopy. The results showed the discharge plasma was in local thermal equilibrium (LTE) state. Electron concentration and electron temperature were about 6 × 10{sup 21} m{sup −3} and 4000 K, respectively. The carbonitrided layer contained Al{sub 4}C{sub 3}, AlN and Al{sub 7}C{sub 3}N{sub 3} phases. After PEC/N treatment, the corrosion resistance of pure aluminum was significantly improved, which was related to the formation of nitride phases. This work expands the application of plasma electrolysis technology on the surface modification of low melting point metal.

  2. Preparation of pure calcium carbonate by mineral carbonation using industrial byproduct FGD gypsum

    Science.gov (United States)

    Song, K.; Kim, W.; Bang, J. H.; Park, S.; Jeon, C. W.

    2015-12-01

    Mineral carbonation is one of the geological approaches for the sequestration of anthropogenic CO2 gas. Its concept is based on the natural weathering processes in which silicate minerals containing divalent cations such as Ca or Mg are carbonated to CaCO3 or MgCO3 in the reaction with CO2gas. Raw materials for the mineral carbonation have been extended to various industrial solid wastes such as steel slag, ashes, or FGD (flue gas desulfurization) gypsum which are rich in divalent cations. These materials have economic advantages when they are produced in CO2 emission sites. Flue gas desulfurization (FGD) gypsum is such a byproduct obtained in at coal-fired power plants. Recently, we carried out a research on the direct mineral carbonation of FGD gypsum for CO2sequestration. It showed high carbonation reactivity under ambient conditions and the process can be described as follows: CaSO4·2H2O + CO2(g) + 2NH4OH(aq) → CaCO3(s) + (NH4)2SO4(aq) (1) At the early stage of the process, calcium carbonate (CaCO3) exists as a dissolved ion pair during the induction period. High-purity CaCO3 could be precipitated from dissolved calcium carbonate solution extracted during the induction period. The effect of experimental parameters on pure CaCO3 was evaluated: CO2 flow rate (1-3 L/min), ammonia content (4-12%), and solid-to-liquid (S/L) ratio (5-300 g/L). FE-SEM (field-emission scanning electron microscopy) and XRD (X-ray diffraction) study revealed that the precipitated CaCO3 was round-shaped vaterite crystals. The induction time was inversely proportional to the CO2 flow rate and the yield for pure CaCO3 increased with the ammonia content. The formation efficiency for pure CaCO3 decreased with S/L (solid/liquid) ratio. It was 90% (mol/mol) when the S/L ratio was 5 g/L. However, S/L ratio didn't affect the maximum solubility limit of dissolved CaCO3.

  3. Preparations of Pure Alkaline Earth Molybdate Phases from Single Molecular Precursors

    Institute of Scientific and Technical Information of China (English)

    JIANG Ya-qi; ZHAO Hong; FANG Zhi-min; WAN Hui-lin; XIONG Ming; ZHOU Zhao-hui

    2004-01-01

    The pure phases of alkaline earth molybdates MMoO4, where M=Mg, Ca, Sr or Ba, were synthesized via the calcination of the related citrato oxomolybdate complexes. The mixed metal oxides can be highly dispersed at the atomic level due to the existence of uniform citrato oxomolybdenum precursors in definite composition. The complexing effect helps to produce the fine-grained oxides with particle size in the ultrafine scale(<100 nm) at heat-treatment temperatures below 500 ℃. The structures of the precursor complexes and the finally heat-treated particles were studied by means of IR, XRD, DSC, DTA and TG techniques. The morphologies of the particles were observed by using the SEM technique. The average particle sizes were calculated to be in the range of 30-50 nm based on X-ray diffraction line-broadening and SEM images, indicating the poor conglomeration of crystallite at low temperatures.

  4. A broadband acoustic stimulus is more likely than a pure tone to elicit a startle reflex and prepared movements.

    Science.gov (United States)

    Carlsen, Anthony N

    2015-08-01

    A loud acoustic stimulus that elicits a startle reflex has long been used to study the neurophysiology of cortical and subcortical neural circuits. More recent investigations have shown that startle can act as an early trigger for prepared actions, suggesting a brainstem role in the preparation and initiation of actions. However, in order to attribute any startle-triggered voluntary responses to activation in subcortical structures it is necessary to measure a startle-related activity in these structures. The current study investigated the most effective stimulus for eliciting a detectible startle reflex. While more intense stimuli are more likely to elicit a startle reflex, the current study examined whether broadband noise is more likely than a pure tone to produce a startle at various intensities above 100 dB. Participants performed a button release reaction time task in response to either a 1 kHz tone or a broadband noise pulse with intensities ranging from 82 to 124 dB. Reaction time and EMG from the wrist extensors and the sternocleidomastoid (SCM) were measured. Results showed that startle-related SCM EMG was elicited more frequently by broadband noise compared to pure tones. The higher proportion of startle reflexes observed in SCM was associated with a higher incidence of the voluntary task being triggered early. A higher incidence of startle following broadband noise is attributed to the activation of a larger proportion of the basilar membrane; thus, a lower intensity broadband noise stimulus may be used to elicit startle reflex at a similar rate as a higher intensity pure tone. © 2015 The Authors. Physiological Reports published by Wiley Periodicals, Inc. on behalf of the American Physiological Society and The Physiological Society.

  5. Improving the productivity of a multidimensional chromatographic preparative system by collecting pure chemicals after each of three chromatographic dimensions.

    Science.gov (United States)

    Sciarrone, Danilo; Pantò, Sebastiano; Donato, Paola; Mondello, Luigi

    2016-12-02

    The enhanced sample collection capability of a heart-cutting three-dimensional GC-prep system is reported. In its original configuration, a highly pure component can be usually collected after the last (3D) column outlet by means of a dedicated preparative station. The latter is located after the last chromatographic column, and this poses the requirement for multiple heart cuts even for those components showing satisfactory degree of purity after the first (or second) separation dimension. The feasibility to collect pure components after each chromatographic dimension is here described, employing a three-dimension MDGC system equipped with high-temperature valves, located inside the first and second GC ovens, with the aim to improve the productivity of the collection procedure. In addition to a commercial preparative collector located at the 3D outlet, two laboratory-made collection systems were applied in the first and second dimension, reached by the effluent to be collected trough a high-temperature valve switching the heart-cut fraction between either the detector (FID), or the collector. Highly pure sesquiterpene components were collected, namely: patchouli alcohol after the first column [poly(5% diphenyl/95% dimethylsiloxane)], α-bulnesene after a second column coated with high molecular weight polyethylene glycol, and α-guaiene after an ionic-liquid based column (SLB-IL60), used as the third dimension. Purity levels ranging from 85 to 95% were achieved with an average collection recovery of 90% (n=5). The following average amounts were collected per run: 160μg for α-guaiene, 295μg for α-bulnesene, and 496μg for patchouli alcohol.

  6. Preparation and characterizations of bioglass ceramic cement/Ca-P coating on pure magnesium for biomedical applications.

    Science.gov (United States)

    Zhang, Xue; Li, Xiao-Wu; Li, Ji-Guang; Sun, Xu-Dong

    2014-01-08

    Magnesium has been recently recognized as a biodegradable metal for bone substitute applications. In order to improve the biocompatibility and osteointegration of pure Mg, two kinds of coatings, i.e., the Ca-P coating and bioglass ceramic cement (BGCC)/Ca-P coating, were prepared on the pure Mg ribbons in the present work. The Ca-P coating was obtained by aqueous solution method. Subsequently, Ca-P coated Mg was immersed into the BGCC slurry, which was prepared by the mix of SiO2-CaO-P2O5 bioglass ceramic (BGC) powders and phosphate liquid with a liquid-to-solid ratio (L/S) of 1.6, to obtain BGCC/Ca-P coating by a dipping-pulling method. The microstructures, morphologies, and compositions of these coatings have been characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM) with energy-dispersive spectroscopy (EDS). The effect of these coatings on the mineralization activity of pure Mg has been investigated. The results indicated that both the Ca-P coating and BGCC/Ca-P coating could promote the nucleation of osteoconductive minerals, i.e., bone-like apatite, and the hydroxyapatite (HA) layer formed on the surface of the BGCC/Ca-P coating is obviously more dense, thick, and stable than that formed on the Ca-P coating after immersion in SBF solution for 15 days. The potentiodynamic polarization test indicated that the corrosion current density of the BGCC/Ca-P coated Mg is obviously lower than that of the Ca-P coating and 10 times lower than that of uncoated Mg. These results demonstrated that the BGCC/Ca-P coating can increase significantly the corrosion resistance of Mg and introduce a high biocompatibility of the bone-Mg substrate interface. In summary, the newly developed BGCC/Ca-P coated Mg has a good potential for biomedical applications.

  7. Optical characterization of pure and Al-doped ZnO prepared by sol-gel method

    Science.gov (United States)

    Belka, Radosław; Keczkowska, Justyna; Kasińska, Justyna

    2016-09-01

    In this paper the preparation process and optical characterization of pure and Al3+ doped zinc oxide (Al:ZnO) coatings will be presented. ZnO based materials have been studied extensively due to their potential applications in optoelectronic devices as conductive gas sensors, transparent conductive, electrodes, solar cell windows, varistors, UVfilters or photovoltaic cells. It is II-VI semiconductor with wide-band gap of 3.37 eV and large exciton binding energy of 60meV. It is possible to improve the conductivity of ZnO coating by intentionally doping ZnO with aluminium ions during preparation process. Such transparent and conducting thin films, known as AZO (Aluminium Zinc Oxide) films, are very good candidate for application as transparent conducting materials in many optoelectronic devices. The well-known sol-gel method is used for preparation of solution, coated on glass substrates by dip coating process. Prepared samples were investigated by Raman and UV-VIS spectroscopy. Transmittance as well as specular and diffuse reflectance spectroscopy methods were used for studies of optical parameters. We found that Al admixture influences on optical bandgap of ZnO.

  8. Preparing isomerically pure beams of short-lived nuclei at JYFLTRAP

    CERN Document Server

    Eronen, T; Hager, U; Hakala, J; Jokinen, A; Kankainen, A; Rahaman, S; Rissanen, J; Weber, C; Äystö, J

    2008-01-01

    A new procedure to prepare isomerically clean samples of ions with a mass resolving power of more than 100,000 has been developed at the JYFLTRAP tandem Penning trap system. The method utilises a dipolar rf-excitation of the ion motion with separated oscillatory fields in the precision trap. During a subsequent retransfer to the purification trap, the contaminants are rejected and as a consequence, the remaining bunch is isomerically cleaned. This newly-developed method is suitable for very high-resolution cleaning and is at least a factor of five faster than the methods used so far in Penning trap mass spectrometry.

  9. Fieldcrest Cannon, Inc. Advanced Technical Preparation. Statistical Process Control (SPC). PRE-SPC I. Instructor Book.

    Science.gov (United States)

    Averitt, Sallie D.

    This instructor guide, which was developed for use in a manufacturing firm's advanced technical preparation program, contains the materials required to present a learning module that is designed to prepare trainees for the program's statistical process control module by improving their basic math skills and instructing them in basic calculator…

  10. Preparing arbitrary pure states of spatial qudits with a single phase-only spatial light modulator

    Science.gov (United States)

    Varga, J. J. M.; Solís-Prosser, A. M. A.; Rebón, L.; Arias, A.; Neves, L.; Iemmi, C.; Ledesma, S.

    2015-04-01

    We present a new method for preparing multidimensional spatial qudits by means of a single phase-only spatial light modulator (SLM). This method improves previous ones that use two SLMs, one working in amplitude regime and the other in phase regime. To that end, we addressed diffraction gratings on the slits that define the state and then we performed a spatial filtering in the Fourier plane. The amplitude of the coefficients of the quantum state are determined by the modulation deep of the diffraction gratings, and the relative phase is the mean phase value of the diffraction gratings. This encoding result to be more compact, less expensive and use the photons more efficiently.

  11. Preparation of Highly Pure Vanadyl Sulfate from Sulfate Solutions Containing Impurities of Iron and Aluminum by Solvent Extraction Using EHEHPA

    Directory of Open Access Journals (Sweden)

    Dan Li

    2017-03-01

    Full Text Available The preparation of highly pure vanadyl sulfate from sulfate solutions containing impurities of iron and aluminumwas investigated by solvent extraction with 2-ethylhexyl phosphoric acid mono-2-ethylhexyl ester (EHEHPA and tri-n-butyl phosphate (TBP as the phase modifier. The extraction and stripping conditions of vanadium (IV and its separation from iron and aluminum were optimized. Under the optimal extraction conditions, the extraction of vanadium (IV and iron were 68% and 53%, respectively, while only 2% aluminum was extracted in a single contact, suggesting good separation of vanadium (IV from aluminum. Sulfuric acid solution was used for the stripping. Nearly 100% vanadium (IV and 95% aluminum were stripped, while only 10% iron was stripped under the optimal stripping conditions in a single contact, suggesting good separation of vanadium (IV from iron. After five stages of extraction and stripping, highly pure vanadyl sulfate containing 76.5 g/L V (IV with the impurities of 12 mg/L Fe and 10 mg/L Al was obtained, which is suitable for the electrolyte of a vanadium redox flow battery. Organic solution was well regenerated after stripping by oxalic acid solution to remove the remaining iron. The mechanism of vanadium (IV extraction using EHEHPA was also discussed based on the Fourier transform infrared spectroscopy (FT-IR analysis.

  12. Preparation and properties of a cerium-containing hydroxyapatite coating on commercially pure titanium by micro-arc oxidation

    Institute of Scientific and Technical Information of China (English)

    HUANG Yong; WANG Yingjun; NING Chengyun; NAN Kaihui; HAN Yong

    2008-01-01

    A porous cerium-containing hydroxyapatite coating on commercially pure titanium was prepared by micro-arc oxidation (MAO) in an electrolytic solution containing calcium acetate, β-glycerol phosphate disodium salt pentahydrate (β-GP), and cerium nitrate. The thickness, phase, composition morphology, and biocompatibility of the oxide coating were characterized by X-ray diffraction (XRD), electron probe microanalysis (EPMA), scanning electron microscopy (SEM) with energy dispersive X-ray spectrometer (EDS), and cell culture. The thickness of the MAO film is about 15-25μm, and the coating is porous and uneven, without any apparent interface to the titanium substrates. The results of XRD and EDS show that the porous coating is made up of hydroxyapatite (HA) film containing Ce. The favorable osteoblast cell affinity makes the Ce-HA film have a good biocompatibility. The Ce-HA film is expected to have significant medical applications as dental implants and artificial bone joints.

  13. Hanford Engineer Works technical manual: Section A, Metal preparation

    Energy Technology Data Exchange (ETDEWEB)

    1967-01-01

    Metal is used in the Hanford process in the form of short cylinders, or slugs, which are bonded to aluminum jackets. the jackets are necessary to prevent corrosion and the escape of radioactive materials. The bonding is required to provide adequate heat transfer. This section of the manual deals with the preparation of the jacketed slugs. 6 figs.

  14. Utilization of a Green Brominating Agent for the Spectrophotometric Determination of Pipazethate HCl in Pure Form and Pharmaceutical Preparations

    Directory of Open Access Journals (Sweden)

    Ayman A. Gouda

    2013-01-01

    Full Text Available Five simple, accurate, and sensitive spectrophotometric methods (A–E have been described for the indirect assay of pipazethate HCl (PZT either in pure form or in pharmaceutical preparations. The proposed methods are based on the bromination of pipazethate HCl with a solution of excess bromate-bromide mixture in hydrochloric acid medium and subsequent estimation of the residual bromine by different reaction schemes. In the first three methods (A–C, the determination of the residual bromine is based on its ability to bleach the color of methyl orange, indigo carmine, or thymol blue dyes and measuring the absorbance at 520, 610, and 550 nm for methods A, B, and C, respectively. Methods D and E involves treating the unreacted bromine with a measured excess of iron(II, and the remaining iron(II is complexed with 1,10-phenanthroline, and the increase in absorbance is measured at 510 nm for method D and the resulting iron(III is complexed with thiocyanate and the absorbance is measured at 480 nm for method E. The different experimental parameters affecting the development and stability of the color are carefully studied and optimized. Regression analysis of the Beer-Lambert plots showed good correlation in the concentration ranges of 0.5–8.0 μg . The apparent molar absorptivity, Sandell's sensitivity, detection and quantitation limits were evaluated. The proposed methods have been applied and validated successfully for the analysis of the drug in its pure form and pharmaceutical formulations with mean recoveries of 99.94%–100.15% and relative standard deviation ≤1.53. No interference was observed from a common pharmaceutical adjuvant. Statistical comparison of the results with the reference method shows excellent agreement and indicates no significant difference in accuracy and precision.

  15. Effect of SiO2 on the Preparation and Properties of Pure Carbon Reaction Bonded Silicon Carbide Ceramics

    Institute of Scientific and Technical Information of China (English)

    WU Qi-de; GUO Bing-jian; YAN Yong-gao; ZHAO Xiu-jian; HONG Xiao-lin

    2004-01-01

    Effect of SiO2 content and sintering process on the composition and properties of Pure CarbonReaction Bonded Silicon Carbide (PCRBSC) ceramics prepared with C - SiO2 green body by infiltrating siliconwas presented. The infiltrating mechanism of C - SiO2 preform was also explored. The experimental results indicatethat the shaping pressure increases with the addition of SiO2 to the preform, and the pore size of the body turnedfiner and distributed in a narrower range, which is beneficial to decreasing the residual silicon content in the sin-tered materials and to avoiding shock off, thus increasing the conversion rate of SiC. SiO2 was deoxidized by car-bon at a high temperature and the gaseous SiO and CO produced are the main reason to the crack of the body atan elevated temperature. If the green body is deposited at 1800℃ in vacuum before infiltration crack will not beproduced in the preform and fully dense RBSC can be obtained. The ultimate material has the following properties:a density of3.05-3.12g/cm3 ,a strength of 580±32MPa and a hardness of (HRA)91-92.3.

  16. Preparing technical text for translation: A comparison between International English and methods for simplifying language

    Energy Technology Data Exchange (ETDEWEB)

    Buican, I.; Hriscu, V.; Amador, M.

    1994-07-01

    For the past four and a half years, the International Communication Committee at Los Alamos National Laboratory has been working to develop a set of guidelines for writing technical and scientific documents in International English, that is, English for those whose native language is not English. Originally designed for documents intended for presentation in English to an international audience of technical experts, the International English guidelines apply equally well to the preparation of English text for translation. This is the second workshop in a series devoted to the topic of translation. The authors focus on the advantages of using International English, rather than various methods of simplifying language, to prepare scientific and technical text for translation.

  17. DOEGO85004_1: Final Non-proprietary Technical Report, Generating Process and Economic Data for Preliminary Design of PureVision Biorefineries DOEGO85004_2: One Original Final Proprietary Technical Report to be mailed to DOE Golden.

    Energy Technology Data Exchange (ETDEWEB)

    Kadam, Kiran L., Ph.D; Lehrburger, Ed

    2008-01-17

    The overall objective of the project was to define a two-stage reactive fractionation process for converting corn stover into a solid cellulose stream and two liquid streams containing mostly hemicellulosic sugars and lignin, respectively. Toward this goal, biomass fractionation was conducted using a small continuous pilot unit with a nominal capacity of 100 pounds per day of dry biomass to generate performance data using primarily corn stover as feedstock. In the course of the program, the PureVision process was optimized for efficient hemicellulose hydrolysis in the first stage employing autohydrolysis and delignification in the second stage using sodium hydroxide as a catalyst. The remaining cellulose was deemed to be an excellent substrate for producing fermentation sugars, requiring 40% less enzymes for hydrolysis than conventional pretreatment systems using dilute acid. The fractionated cellulose was also determined to have potential higher-value applications as a pulp product. The lignin coproduct was determined to be substantially lower in molecular weight (MW) compared to lignins produced in the kraft or sulfite pulping processes. This low-MW lignin can be used as a feed and concrete binder and as an intermediate for producing a range of high-value products including phenolic resins. This research adds to the understanding of the biomass conversion area in that a new process was developed in the true spirit of biorefineries. The work completed successfully demonstrated the technical effectiveness of the process at the pilot level indicating the technology is ready to advance to a 2–3 ton per day scale. No technical showstoppers are anticipated in scaling up the PureVision fractionation process to commercial scale. Also, economic feasibility of using the PureVision process in a commercial-scale biorefinery was investigated and the minimum ethanol selling price for the PureVision process was calculated to be $0.94/gal ethanol vs. $1.07/gal ethanol for the

  18. Rough draft of Technical Data Summary covering preparation of initial Mark IIIA plates by extrusion cladding

    Energy Technology Data Exchange (ETDEWEB)

    O`Leary, W.J.; Herries, R.R.

    1956-06-22

    This Technical Data Summary comprises the technical information that has been developed to date for the preparation by extrusion cladding of the outer plate of the contemplated Mark IIIA fuel plate bundle. The Mark IIIA fuel bundle is designed to produce plutonium at higher power levels than is possible with the Mark I or Mark VII assemblies. The Mark IIIA and Mark V designs are being developed concurrently for the same purpose. The information, however, on the Mark IIIA design is at present far more complete than for Mark V, and equipment for producing Mark IIIA in test quantities is already available. The purpose of this Technical Data Summary is to have available the facilities for cladding, by an apparently attractive process, a Mark IIIA plate.

  19. Preparation and characterization of porous bioceramic layers on pure titanium surfaces obtained by micro-arc oxidation process

    Science.gov (United States)

    Chien, Chi-Sheng; Hung, Yu-Chien; Hong, Ting-Fu; Wu, Chung-Chun; Kuo, Tsung-Yuan; Lee, Tzer-Min; Liao, Tze-Yuan; Lin, Huan-Chang; Chuang, Cheng-Hsin

    2017-03-01

    Fluorapatite (FA) has better chemical and thermal stability than hydroxyapatite (HA), and has thus attracted significant interest for biomaterial applications in recent years. In this study, porous bioceramic layers were prepared on pure titanium surfaces using a micro-arc oxidation (MAO) technique with an applied voltage of 450 V and an oxidation time of 5 min. The MAO process was performed using three different electrolyte solutions containing calcium fluoride (CaF2), calcium acetate monohydrate (Ca(CH3COO)2·H2O), and sodium phosphate monobasic dihydrate (NaH2PO4·2H2O) mixed in ratios of 0:2:1, 1:1:1, and 2:0:1, respectively. The surface morphology, composition, micro-hardness, porosity, and biological properties of the various MAO coatings were examined and compared. The results showed that as the CaF2/Ca(CH3COO)2·H2O ratio increased, the elemental composition of the MAO coating transformed from HA, A-TiO2 (Anatase) and R-TiO2 (Rutile); to A-TiO2, R-TiO2, and a small amount of HA; and finally A-TiO2, R-TiO2, CaF2, TiP2O5, and FA. The change in elemental composition was accompanied by a higher micro-hardness and a lower porosity. The coatings exhibited a similar in vitro bioactivity performance during immersion in simulated body fluid for 7-28 days. Furthermore, for in initial in vitro biocompatibility tests performed for 24 h using Dulbecco's Modified Eagle Medium (DMEM) supplement containing 10%Fetal bovine serum, the attachment and spreading of osteoblast-like osteosarcoma MG63 cells were found to increase slightly with an increasing CaF2/Ca(CH3COO)2·H2O ratio. In general, the results presented in this study show that all three MAO coatings possess a certain degree of in vitro bioactivity and biocompatibility.

  20. Sixth form pure mathematics

    CERN Document Server

    Plumpton, C

    1968-01-01

    Sixth Form Pure Mathematics, Volume 1, Second Edition, is the first of a series of volumes on Pure Mathematics and Theoretical Mechanics for Sixth Form students whose aim is entrance into British and Commonwealth Universities or Technical Colleges. A knowledge of Pure Mathematics up to G.C.E. O-level is assumed and the subject is developed by a concentric treatment in which each new topic is used to illustrate ideas already treated. The major topics of Algebra, Calculus, Coordinate Geometry, and Trigonometry are developed together. This volume covers most of the Pure Mathematics required for t

  1. Research progress of surface coating preparation on pure copper%纯铜表面涂层制备方法的研究进展

    Institute of Scientific and Technical Information of China (English)

    孙方红; 马壮; 刘亚良; 陆小龙; 鲍文杰

    2012-01-01

    The research progress of surface coating preparation on the pure copper is summarized and research results of thermal spray method, cold gas dynamic spray, electrospark deposition, laser clading, thermochemical reaction method, composite method are reviewed. The merits and demerits of different preparation method are analyzed. And the development trends of surface coating on pure copper are proposed.%总结纯铜表面涂层的研究现状,介绍热喷涂法、冷喷涂法、电火花沉积法、激光熔覆法、热化学反应法、复合法制备涂层的研究成果,分析各种制备方法的优缺点,展望今后纯铜表面涂层的发展方向.

  2. Features of 30–40 years old tourists-skiers’ technical training during before hiking preparation

    Directory of Open Access Journals (Sweden)

    Alexander Toporkov

    2016-06-01

    Full Text Available Purpose: compare the test results of the level of tourists’ technical readiness of 30–40 years old skiers in winter period of preparation. Determine the effectiveness of developed programs to improve the technical readiness of 30–40 years old tourists-skiers. Material & Methods: 14 people aged 30 to 40 years old who have a different experience in water, hiking and mountain as well as ski-sport hiking took part in research. Analysis of scientific and methodical literature, pedagogical observations, pedagogical experiment, methods of mathematical statistics is used. Results: the test results of 30–40 years old tourists skiers which are the participants in the experimental group received in winter period of preparation and preparatory period and the results after passing ski sports hiking of the third category of complexity are processed. Their comparative analysis is held. Conclusions: it was found that the developed training program can effectively influence the increase of the level of tourists’ and skiers’ technical skills and preparedness, which contributes to the successful passage of ski sports categorized hiking.

  3. Perceptions of veterinary faculty members regarding their responsibility and preparation to teach non-technical competencies.

    Science.gov (United States)

    Lane, India F; Bogue, E Grady

    2010-01-01

    The development of non-technical competencies has become an important component of veterinary education. In this study, we determined faculty perspectives regarding their perceived involvement and ability in the cultivation of these competencies. A survey was administered to faculty members at five institutions. Respondents were asked whether the competency should be taught in their own courses and how prepared they felt to teach and evaluate the competency. Responses were analyzed by participant institution, gender, terminal degree and year, discipline, rank, and teaching experience. More than 90% of faculty respondents reported a personal responsibility to teach or cultivate critical thinking skills, communication skills, self-development skills, and ethical skills, with more than 85% also agreeing to a role in skills such as interpersonal skills, creativity, and self-management. The lowest percentages were seen for crisis and incident management (64%) and business skills (56%). Perceived preparedness to teach and evaluate these competencies paralleled the preceding findings, especially for the four consensus competencies and self-management. Faculty preparedness was lowest for business skills. Junior faculty were somewhat less likely than others to perceive a responsibility to teach non-technical competencies; however, instructors were more prepared to teach and evaluate business skills than were other faculty. Institutional trends were evident in faculty preparation. Although male faculty and non-DVM faculty tended to report a higher degree of preparedness, few differences reached statistical significance. Faculty perceptions of their responsibility to teach non-technical competencies vary by competency and parallel their perceived preparedness to teach and evaluate them.

  4. Studies of ferroelectric and dielectric properties of pure and doped barium titanate prepared by sol-gel method

    Energy Technology Data Exchange (ETDEWEB)

    Bisen, Supriya; Mishra, Ashutosh; Jarabana, Kanaka M. [School of Physics, Vigyan Bhawan, Devi Ahilya University, Khandwa Road Indore-452001 (India)

    2016-05-23

    In this work, Barium Titanate (BaTiO{sub 3}) powders were synthesized via Sol-Gel auto combustion method using citric acid as a chelating agent. We study the behavior of ferroelectric and dielectric properties of pure and doped BaTiO{sub 3} on different concentration. To understand the phase and structure of the powder calcined at 900°C were characterized by X-ray Diffraction shows that tetragonal phase is dominant for pure and doped BTO and data fitted by Rietveld Refinement. Electric and Dielectric properties were characterized by P-E Hysteresis and Dielectric measurement. In P-E measurement ferroelectric loop tracer applied for different voltage. The temperature dependant dielectric constant behavior was observed as a function of frequency recorded on hp-Hewlett Packard 4192A, LF impedance, 5Hz-13Hz analyzer.

  5. Perfection of technical and tactical preparation of sportsmen of hand-to-hand fight

    Directory of Open Access Journals (Sweden)

    Serebryak V.V.

    2010-06-01

    Full Text Available Essence of innovative hike is considered to upgrading preparation of sportsmen of hand-to-hand fight. 58 sportsmen of section of hand-to-hand fight took part in research. Age of sportsmen are from 17 to 22 years. Developed and approved the most effective technical and tactical charts of construction of duel with the opponents of different styles of single combats. It is well-proven that offered approach instrumental in development of operative thought and adaptation to sparring of hand-to-hand fight.

  6. Preparation of artificial canine femoral stem with HA-Ti ladder-type coating on plasma-sprayed pure Ti substrate and its performance evaluation

    Energy Technology Data Exchange (ETDEWEB)

    Zeng Xianlin, E-mail: zxlxhh@163.com [Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022 (China); Li Jingfeng; Yang Shuhua; Zheng Qixin; Zou Zhenwei [Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022 (China)

    2012-03-01

    An ideal, biological-type, artificial femoral stem prosthesis has good stability and improved bone-prosthesis bonding capacity. In the current study, pure hydroxyapatite (HA)-coated, cementless, artificial femoral stems were prepared by adopting different plasma spray powers and distances and were tested in terms of shear strength. The pure titanium (Ti) substrates, HA coatings, and composite Ti-HA ladder-type coatings prepared under vacuum and atmospheric conditions were examined to compare the shear strengths, microscopic constitutions, and structures of the coatings. The coating was fabricated and the bond strength was improved by adopting 35 kW of spray power and an 80 mm spray distance. The comparisons show that the shear strength of the Ti coating prepared under vacuum conditions was higher than that of the coating prepared under atmospheric conditions (P < 0.05). Moreover, the pressure-shear strength of the Ti + HAG + Ti + V group coating was statistically significantly different from those of the HA + Ti + V and HA + Ti + A groups (P < 0.05). The coatings were compared using scanning electron microscopy, X-ray diffraction, and infrared spectrum analysis. The composite HA-Ti ladder-type coating group, where pure Ti substrate was sprayed onto the Ti alloy under vacuum conditions, had a successive laminate structure. In addition, the intergranular bond in the HA surface layer on the gradient coating was compact and highly crystallized. Under vacuum conditions, the plasma-sprayed layer was characterized by higher tightness, moderate porosity, higher bonding strength to HA, and higher HA crystallinity. The proposed coating can be used in new, cementless, artificial femoral stems with improved bone-prosthesis bonding capacity and stability.

  7. Fieldcrest Cannon, Inc. Advanced Technical Preparation. Statistical Process Control (SPC). PRE-SPC 11: SPC & Graphs. Instructor Book.

    Science.gov (United States)

    Averitt, Sallie D.

    This instructor guide, which was developed for use in a manufacturing firm's advanced technical preparation program, contains the materials required to present a learning module that is designed to prepare trainees for the program's statistical process control module by improving their basic math skills in working with line graphs and teaching…

  8. A Technology for Technical Preparation of Young Athletes in Team Sports

    Directory of Open Access Journals (Sweden)

    Mikhail M. Polevshchikov

    2014-03-01

    Full Text Available The author has developed a technology for technical preparation of young athletes in team sports, which facilitates one’s quick mastering rational and effective techniques and helps develop the ability to employ them, facilitates the formation of one’s individual style using these techniques, the streamlining of technical preparation at any stage – from beginners to world-class athletes, and helps boost efficiency while easing the workload for coaches. Team practice is held on a playing field equipped with a dynamic lighting system that divides the field into zones which the athletes have to stay in with a sports implement and perform specific technical actions. The position, form, and area of such zones can be changed programmatically at different speeds and unexpectedly for the athletes. The drill process is filmed with a camera stationed above the playing field; the image is transferred into a computer that records the time instants at which an athlete and/or the sports implement goes out of the bounds of a zone. An athlete is informed of his/her or the implement’s having gone out of the bounds via an additional dynamic lighting system which differs in color from the system used for the zones and/or via sound signals. The number of times the athletes and/or the sports implement go out of the bounds of preset zones is recorded and indicates the level of the athletes’ technical preparedness. To forestall the development of the dynamic stereotype of lowly depressed eyes, which narrows the vision of the field and prevents one from developing one’s playing thinking, the color of the zone of one or several athletes can be changed programmatically at random times. This serves as a signal for the athletes whose zone color does not change to pass one’s implement over to one of the athletes whose zone color has changed. In such drills, athletes get a chance to not only work on preset technical moves but have to watch for changes in zones

  9. Preparation of Pure and Stable Chitosan Nanofibers by Electrospinning in the Presence of Poly(ethylene oxide).

    Science.gov (United States)

    Mengistu Lemma, Solomon; Bossard, Frédéric; Rinaudo, Marguerite

    2016-10-26

    Electrospinning was employed to obtain chitosan nanofibers from blends of chitosans (CS) and poly(ethylene oxide) (PEO). Blends of chitosan (MW (weight-average molecular weight) = 102 kg/mol) and PEO (M (molecular weight) = 1000 kg/mol) were selected to optimize the electrospinning process parameters. The PEO powder was solubilized into chitosan solution at different weight ratios in 0.5 M acetic acid. The physicochemical changes of the nanofibers were determined by scanning electron microscopy (SEM), swelling capacity, and nuclear magnetic resonance (NMR) spectroscopy. For stabilization, the produced nanofibers were neutralized with K₂CO₃ in water or 70% ethanol/30% water as solvent. Subsequently, repeated washings with pure water were performed to extract PEO, potassium acetate and carbonate salts formed in the course of chitosan nanofiber purification. The increase of PEO content in the blend from 20 to 40 w% exhibited bead-free fibers with average diameters 85 ± 19 and 147 ± 28 nm, respectively. Their NMR analysis proved that PEO and the salts were nearly completely removed from the nanostructure of chitosan, demonstrating that the adopted strategy is successful for producing pure chitosan nanofibers. In addition, the nanofibers obtained after neutralization in ethanol-aqueous solution has better structural stability, at least for six months in aqueous solutions (phosphate buffer (PBS) or water).

  10. Purely Chemical Approach for Preparation of d-α-Amino Acids via (S)-to-(R)-Interconversion of Unprotected Tailor-Made α-Amino Acids.

    Science.gov (United States)

    Nian, Yong; Wang, Jiang; Zhou, Shengbin; Dai, Wenhao; Wang, Shuni; Moriwaki, Hiroki; Kawashima, Aki; Soloshonok, Vadim A; Liu, Hong

    2016-05-06

    Unnatural (R)-α-amino acids (α-AAs) are in growing demand in the biomedical research and pharmaceutical industries. In this work, we present development of a purely chemical approach for preparation of (R)-α-AAs via (S)-to-(R)-interconversion of natural and tailor-made (S)-α-AAs. The method can be used on free, unprotected α-AAs and features a remarkable structural generality including substrates bearing tertiary alkyl chains and reactive functional groups. These attractive characteristics, combined with simplicity of reaction conditions and virtually complete stereochemical outcome, constitute a true methodological advance in this area, rivaling previously reported chemical and biocatalytic approaches.

  11. Biocompatibility and in vitro antineoplastic drug-loaded trial of titania nanotubes prepared by anodic oxidation of a pure titanium

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    TiO2 nanotube (NT) arrays have been prepared by anodic oxidation of a Ti sheet,and carbon-deposited TiO2 NT arrays have been prepared by annealing TiO2 NT arrays in carbon atmosphere. The biocompatibility of the as-prepared NT arrays was investigated by observing the growth of osteosarcoma (MG-63) cells on the NT arrays. The application of the TiO2 NT arrays as a drug delivery vehicle was investigated. Both the TiO2 NTs and the carbon-modified TiO2 NTs have good biocompatibility supporting the normal growth and adhesion of MG-63 cells with no need of extracellular matrix protein coating. The one end-opened TiO2 NTs can be easily filled with drugs,working as an efficient drug delivery vehicle.

  12. Effect of Preparation Parameter on Microstructure and Grain Refining Behavior of In Situ AlN-TiN-TiB2/Al Composite Inoculants on Pure Aluminum

    Directory of Open Access Journals (Sweden)

    Qian Wang

    2017-02-01

    Full Text Available The formation of in situ AlN-TiN-TiB2/Al composite inoculants, which contain multi-phase refiner particles including AlN, TiN, TiB2, Al3Ti, and α-Al, was investigated using nitrogen gas injection. The effects of the main preparation parameters such as nitriding temperature, nitriding time, Ti content in melts, on the microstructure and grain refinement of in situ AlN-TiN-TiB2/Al composite inoculants were studied. The shape, content and size of different ceramic particles in the inoculants can be tuned by controlling the nitriding temperature and time, inducing excellent refining and reinforcing effects on pure aluminum. As a result, the average grain size of pure aluminum can be reduced to about 122 ± 22 μm from original 1010 ± 80 μm by adding 0.3 wt % inoculants. The mechanical properties including the tensile strength, yield strength and microhardness of the refined as-cast pure aluminum are also improved.

  13. Controllability study on the preparation of pure phase BiFeO{sub 3} thin films by liquid phase self-assembled method

    Energy Technology Data Exchange (ETDEWEB)

    Ren Xuanru, E-mail: renxuanru1986@163.com [C/C Composites Research Center, State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi' an, Shaanxi 710072 (China); Tan Guoqiang; Miao Hongyan; Li Ziyu [College of Material Science and Engineering, Shaanxi University of Science and Technology, Xi' an, Shaanxi 710021 (China)

    2012-08-01

    Pure phase BiFeO{sub 3} (BFO) thin films were prepared on the ITO/glass substrates covered with functionalized OTS self-assembled monolayers (SAMs) by controllable liquid phase self-assembled method. The hydrophobic surface of OTS-SAMs was changed into hydrophilic surface after UV irradiation, which is helpful to make BFO precursor solutions fully wet the substrate surface. A dense film was formed only on the hydrophilic silnaol group regions, which shows the selectively deposition of BFO precursors. Changing the pH value of BFO precursor solutions will affect the phase purity. The pure phase BFO thin films can be obtained under various pH values, which indicates that the liquid phase self-assembled method is controllable. All pure phase BFO films are dense, smooth, well-grown polycrystalline films, but the size of grains increased gradually along with the increase of pH values. The micropattern of BiFeO{sub 3} film has clear edges. The possible growth mechanism of BFO thin films was discussed.

  14. Prepare core–multishell CdSe/ZnS nanocrystals with pure color and controlled emission by tri-n-octylphosphine-assisted method

    Energy Technology Data Exchange (ETDEWEB)

    Ren, Cuiling, E-mail: rencl@lzu.edu.cn [College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000 (China); Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, Lanzhou 730000 (China); Hao, Junjie, E-mail: haojj@sustc.edu.cn [Department of Electrical & Electronic Engineering, South University of Science and Technology of China, Shenzhen 518055 (China); Chen, Hongli [College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000 (China); Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, Lanzhou 730000 (China); Wang, Kai, E-mail: wangk@sustc.edu.cn [Department of Electrical & Electronic Engineering, South University of Science and Technology of China, Shenzhen 518055 (China); Wu, Dan [School of Electrical and Electronic Engineering, Nanyang Technological University (Singapore)

    2015-10-30

    Graphical abstract: The core–multishell CdSe/ZnS QDs synthesized by the TOP-assisted SILAR method represent pure color, high luminescence and controlled emission wavelength, which can be continuously tuned by simply varying the emission of the core nanocrystals. - Highlights: • The prepared core–multishell QDs have pure color emission (FWHM, <25 nm) even after coating with 3-monolayer ZnS. • The emission wavelength can be continuously adjusted by simply varying the ODA:Cd ratio for preparing the core nanocrystals. • The CdSe/ZnS QDs still have good optical properties synthesized at 30 multi scales. • The knowledge gained in this study enabled us to better understand the mechanism of TOP-assisted method. - Abstract: Core–multishell semiconductor nanocrystals have great potential in light emitting devices (LEDs) display, fluorescent biomarkers and luminescent solar concentrators. However, their applications are strongly limited due to the wide full-width at half-maximum (FWHM), inaccurate controllable emission wavelength, and decreased quantum yield as the shell coverage growth. So there still remains a great challenge for improving the photoluminescence properties of core–multishell quantum dots. In this work, tri-n-octylphosphine (TOP) assisted method was used to prepare CdSe/ZnS QDs with narrow FWHM and controlled emission wavelength, the influence of experimental conditions on the photoluminescent properties of the core–multishell QDs were investigated. The experimental results indicated this is an effective method to prepare core–multishell QDs with pure color emission (FWHM value is smaller than 25 nm after coating with 3 monolayers of ZnS), accurately controlled emission and high QY (>95%). This is the smallest FWHM for core–multishell QDs. The emission wavelength of the as-prepared core–multishell QDs can be continuously tuned by simply varying the emission of the core nanocrystals. Furthermore, the knowledge gained in this study

  15. High-performance liquid chromatographic method for the determination of nicardipine in pure, pharmaceutical preparations and plasma and its application to pharmacokinetics in humans

    Directory of Open Access Journals (Sweden)

    Sheikha M. Al-Ghannam

    2009-01-01

    Full Text Available A simple, sensitive and reproducible reversed-phase liquid chromatographic method has been developed and validated for the determination of nicardipine hydrochloride (NC in pure, pharmaceutical preparations, human plasma and the study of the pharmacokinetics of the drug in human body. Nicardipine in plasma were extracted with hexane-butanol (12:1,v/v after addition of borate buffer (0.5 M, pH=9.0, and then measured by HPLC-UV using a Waters Symmetry C18 column as stationary phase and methanol– triethylamine buffer (0.01M pH 4 with acetic acid (70:30 as mobile phase. Nicardipine was quantified by ultraviolet absorbance at 353 nm. The method proved to be linear in the pure drug in the ranges of 15-200 ng/mL (r=0.9989 and 5-40 ?g/mL (r=0.9995, and for the pharmaceutical preparations and plasma for drug concentrations in the range of 5-40 ?g/mL (r =0.9992 and 25-150 ng/mL (r=0.9991, respectively. The lower limit of detection and the lower quantitation limit of NC in plasma were 11.74 and 35.57 ng/mL, respectively. The method is sensitive and reliable for harmacokineticstudies of nicardipine in humans after the oral administration of immediate-release capsules to healthy subjects.

  16. Improvement of technical training of sportswomen in rhythmic gymnastics by means of acrobatics at the stage of preliminary basic preparation

    Directory of Open Access Journals (Sweden)

    Petro Kyzim

    2016-10-01

    Full Text Available Purpose: to prove experimentally the technique of improvement of technical training of sportswomen in rhythmic gymnastics by means of acrobatics at the stage of preliminary basic preparation. Material & Methods: the following methods of the research were used: analysis and synthesis of references, pedagogical observations, pedagogical testing, pedagogical experiment, method of expert assessment (qualimetry, methods of mathematical statistics. Results: the level of technical skill of performance of pre-acrobatic elements by sportswomen of rhythmic gymnastics before carrying out the pedagogical experiment is determined. The dynamics of indicators of the level of technical preparedness of sportswomen of rhythmic gymnastics is defined. Conclusions: it is established that additional resources of acrobatics influence significantly the level of technical preparedness of sportswomen of rhythmic gymnastics at the stage of preliminary basic preparation.

  17. Low-temperature solid state synthesis and in situ phase transformation to prepare nearly pure cBN.

    Science.gov (United States)

    Lian, Gang; Zhang, Xiao; Tan, Miao; Zhang, Shunjie; Cui, Deliang; Wang, Qilong

    2011-07-14

    Cubic boron nitride (cBN) is synthesized by a low-temperature solid state synthesis and in situ phase transformation route with NH(4)BF(4), B, NaBH(4) and KBH(4) as the boron sources and NaN(3) as the nitrogen source. Furthermore, two new strategies are developed, i.e., applying pressure on the reactants during the reaction process and introducing the structural induction effect. These results reveal that the relative contents of cBN are greatly increased by applying these new strategies. Finally, almost pure cBN (∼90%) crystals are obtained by reacting NH(4)BF(4) and NaN(3) at 250 °C and 450 MPa for 24 h, with NaF as the structural induction material. The heterogeneous nucleation mechanism can commendably illuminate the structure induction effect of NaF with face center cubic structure. In addition, the induction effect results in the cBN nanocrystals presenting obvious oriented growth of {111} planes.

  18. QUANTITATIVE ASSAY OF ALMOTRIPTAN MALATE IN PURE DRUG AND PHARMACEUTICAL PREPARATIONS USING SIMPLE AND CONVENIENT VISIBLE SPECTROPHOTOMETRIC METHODS

    Directory of Open Access Journals (Sweden)

    U. VIPLOVA PRASAD

    2012-05-01

    Full Text Available Two direct, simple and sensitive visible spectrophotometric methods (M1&M2 are described for the assay of almotripan malate in pure and solid dosage forms. The method M1 involves oxidative coupling of drug with brucine in presence of sodium meta periodate and purple red colored species is formed and exhibits absorption maxima at 520nm. The method M2 is based on the formation of yellowish brown colored species by the drug with Folin reagent and exhibits absorption maxima at 450nm. Regression analysis of Beer-Lambert plots showed good correlation in the concentration ranges (8.0-24 μg/ml for method M1, (16-48 μg/ml for method M2 respectively. The proposed methods are applied to commercial available tablets and the results are statistically compared with those obtained by the reported UV reference method and validated by recovery studies. The results are found satisfactory and reproducible. These methods are applied successfully for the estimation of the almotriptan malate in the presence of other ingredients that are usually present in dosageforms. These methods offer the advantages of rapidity, simplicity and sensitivity and normal cost and can be easily applied to resource-poor settings without the need for expensive instrumentation and reagents.

  19. Double-Mesopore V-MSU-X Silica and its Pure Siliceous Derivative Prepared by One Synthesis System

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    Non-ionically templated organo-modified MSU-2 mesoporous silicas have been prepared in neutral medium by co-condensation TEOS and vinyltriexoylsiloxane (VTES) and exhibit highly symmetric bimodal mesopore systems. A bromination reaction of V-MSU-2 provides evidence for attachment of most vinyl groups to the accessible surface within the channels. Further, siliceous MSU-2 materials with double pore size have been obtained from calcination of so-produced organo-modified MSU-2 and demonstrate the immense flexibility of the non-ionic templating system.

  20. Scientific Opinion on the safety and efficacy of methionine-zinc, technically pure as amino acid for ruminants, and as compound of trace element for all species

    Directory of Open Access Journals (Sweden)

    EFSA Panel on Additives and Products or Substances used in Animal Feed (FEEDAP

    2013-01-01

    Full Text Available The additive methionine-zinc, technically pure (Met-Zinc is zinc chelated with methionine in a molar ratio 1:2. It is intended to be used as a source of the amino acid in ruminants, and as compound of trace element for all species. The additive is safe for all animal species/categories considering that its use in supplementing feed is first limited by the regulatory maximum content of zinc. However, its contribution to dietary methionine needs consideration when formulating diets. The use of the additive will not modify the methionine content in tissues/products. Zinc from Met-Zinc would not lead to higher zinc deposition in tissues/products, and hence consumer exposure, than zinc from other authorised sources. The use of Met-Zinc in animal nutrition is safe for consumers when used up to the maximum authorised zinc level. In the absence of data, the compound should be considered as a potential irritant to skin and eye and skin sensitiser. Zinc compounds are hazardous by inhalation; Met-Zinc shows high dusting potential, thus exposure by inhalation represents a hazard to persons handling the additive. The use of Met-Zinc in feed as a source of zinc does not pose an additional risk to the environment, compared with other sources of zinc for which it will substitute, as long as the maximum authorised content in feedingstuffs is not exceeded. Methionine from the additive does not represent a risk to the environment. Based on data from a balance study on piglets and from a study on zinc tissue deposition in broilers, Met-Zinc is considered an efficacious source of zinc for all animal species/categories. The weak evidence seen for Met-Zinc is insufficient to conclude on its efficacy in ruminants; however, considering also an EFSA opinion on DL-Met, the Panel concludes that Met-Zinc has some potential as an effective source of methionine for ruminants.

  1. Pure Laparoscopic Augmentation Ileocystoplasty

    Directory of Open Access Journals (Sweden)

    Rafael B. Rebouças

    2014-12-01

    or worsening of renal function. We did not experience any complication related to the intestinal anastomosis fully prepared intracorporeally. Conclusions Albeit technically challenging, pure laparoscopic enterocystoplasty was feasible and safe. Preparing the enteral anastomosis and the pouch intracoporeally may prolong surgical time and contribute to postoperative ileus. Surgical staplers can assist in the procedure, however they are not essential.

  2. CLASSIFICATION OF TECHNICAL MEANS FOR PREPARATION AND DISTRIBUTION OF FEED MIXTURES AT SMALL CATTLE FARMS

    Directory of Open Access Journals (Sweden)

    Frolov V. Y.

    2015-12-01

    Full Text Available To increase the productivity of the cattle it is demanded simultaneous distribution of all types of animal feed in the form of balanced feed mixture with a given nutritional value. Balanced feeding of animals can improve their productivity, reduce feed wastage, and include alternative components of feed mixtures in their diets, which have nourishing properties and high digestibility; make and adjust feeding rations. Researches conducted by Russian and foreign scientists, proved the prospects of full feeding of complete feed mixtures, which allow to increase the productivity of animals to 9-30 % and reduce the feed consumption in the calculation of 1 с of milk by 7-8 %. The composition of complete feed mixtures includes sunflower cake, silage, root crops and forage. The process of preparation and distribution of feeds for large horned livestock is the issue of all the necessary components of the feed mixture with a given nutritional value. Saturation of the feed product with extra energy goes during its interaction with the working bodies of technical means for preparation and distribution (TMPD of different types of food. For preparation and distribution of components of the feed mixture it is necessary to have following facilities, provided with reducing energy intensity and improving the qualitative indicators of processes: for grinding beet fodder and sunflower cake we need disk shredders; for shredding silage and roughage – bearnie and rotor shredders, respectively; for dispensing of beet fodder and sunflower cake – belt conveyor, for dispensing silage and roughage we use disc and drum dispensers, respectively; for mixing sunflower cake - rotary mixers, and for silage, beet fodder and for-age we may use paddle mixers; for distribution of sunflower cake we use rotary feeders, for silage and beet fodder – bin distributors, and for coarse feed we should use conveyor dispensers

  3. A study of PbTiO sub 3 crystallization in pure and composite nanopowders prepared by the sol-gel technique

    CERN Document Server

    Cernansky, M; Kral, K; Krupkova, R

    2002-01-01

    In this investigation the crystallization of PbTiO sub 3 upon annealing of pure nanopowders and PbTiO sub 3 -SiO sub 2 (1:1 v/v) nanocomposite powders prepared by the sol-gel technique was studied. Using x-ray diffraction phase analysis, the start of PbTiO sub 3 crystallization in pure PbTiO sub 3 powders was detected at 400 sup o C. Distinct crystallization of PbTiO sub 3 in PbTiO sub 3 -SiO sub 2 nanocomposites starts at 700 sup o C, whereas SiO sub 2 remains amorphous. There are indications that an interface interaction between the PbTiO sub 3 and the SiO sub 2 phase plays an important role in hindering the crystallization of PbTiO sub 3. The particle size (size of coherently scattering regions) was estimated from the broadening of the x-ray diffraction line profiles. The average size of PbTiO sub 3 nanocrystallites increases with temperature and time of annealing, the influence of temperature being more significant than that of the annealing time. Differential scanning calorimetry confirmed the results of...

  4. Biocatalytic preparation and absolute configuration of enantiomerically pure fungistatic anti-2-benzylindane derivatives. Study of the detoxification mechanism by Botrytis cinerea.

    Science.gov (United States)

    Pinedo-Rivilla, Cristina; Aleu, Josefina; Grande Benito, Manuel; Collado, Isidro G

    2010-08-21

    Enantiomerically pure 2-benzylindane derivatives were prepared using biocatalytic methods and their absolute configuration determined. (1R,2S)-2-Benzylindan-1-ol ((1R,2S)-2) and (S)-2-benzylindan-1-one ((S)-3) were produced by fermenting baker's yeast. Lipase-mediated esterifications and hydrolysis of the corresponding racemic substrates gave rise to the enantiopure compounds (1S,2R)-2-benzylindan-1-ol ((1S,2R)-2) and (1R,2S)-2-benzylindan-1-ol ((1R,2S)-2), respectively. The antifungal activity of these products against two strains of the plant pathogen Botrytis cinerea was tested. The metabolism of anti-(+/-)-2-benzylindan-1-ol (anti-(+/-)-2) by B. cinerea as part of the fungal detoxification mechanism is also described and revealed interesting differences in the genome of both strains.

  5. Fieldcrest Cannon, Inc. Advanced Technical Preparation. Statistical Process Control (SPC). Safety Section: Modules 1-3. Instructor Book.

    Science.gov (United States)

    Averitt, Sallie D.

    These three modules, which were developed for use by instructors in a manufacturing firm's advanced technical preparation program, contain the materials required to present the safety section of the plant's adult-oriented, job-specific competency-based training program. The 3 modules contain 12 lessons on the following topics: lockout/tagout…

  6. Fieldcrest Cannon, Inc. Advanced Technical Preparation. Statistical Process Control (SPC). Safety Section: Modules 1-3. Instructor Book.

    Science.gov (United States)

    Averitt, Sallie D.

    These three modules, which were developed for use by instructors in a manufacturing firm's advanced technical preparation program, contain the materials required to present the safety section of the plant's adult-oriented, job-specific competency-based training program. The 3 modules contain 12 lessons on the following topics: lockout/tagout…

  7. Career and Technical Education Administration: Requirements, Certification/Licensure, and Preparation

    Science.gov (United States)

    Zirkle, Christopher J.; Jeffery, Jeremy O.

    2017-01-01

    The current climate of career and technical administration requirements in all 50 states was detailed and explored. An increasing number of states are not requiring specific career-technical administration certification/licensure in order to oversee secondary career and technical education (CTE) programs, with more states moving towards a general…

  8. Study on Preparation of Pure Fulvic Acid by Ion Exchange%离子交换法制取高纯度黄腐酸的研究

    Institute of Scientific and Technical Information of China (English)

    周少丽; 贺燕

    2016-01-01

    Pure fulvic acid was prepared by strong acidic styrene type cation exchange resin and macroporous styrene type chelating resin. Effect of resin type, ion exchange time and resin quantity on FA purity was investigated. The ion exchange mechanism was analyzed. The results show that, the purity of fulvic acid prepared by one 001×7 Na+ type column, two D751 Na+ type columns and one 001×7 H+ type resin column can reach to 99%.%采用强酸性苯乙烯系阳离子交换树脂和大孔苯乙烯系螯合树脂相结合的方法制取高纯度的黄腐酸,探讨了离子类型、交换时间和树脂用量对 FA纯度的影响,分析了离子交换机理。结论:粗 FA溶液依次通过1个001×7 Na+型、2个D751 Na+型、1个001×7 H+型树脂柱,其中001×7型流速1.5 mL/min左右,D751型流速1.5 mL/min左右,FA纯度达99%以上。

  9. Pure cerium dioxide preparation for use as spectrochemical standard and analysed by inductively coupled plasma mass spectrometry (SF ICP-MS)

    Energy Technology Data Exchange (ETDEWEB)

    Queiroz, Carlos A. da S.; Abrao, Alcidio; Rocha, Soraya M.R. da; Vasconcellos, Mari E. de; Seneda, Jose A.; Forbicini, Christina A.L.G. de O. [Instituto de Pesquisas Energeticas e Nucleares (IPEN), Sao Paulo, SP (Brazil)]. E-mail: cqueiroz@ipen.br; Pedreira, Walter R.; Boaventura, Geraldo R. [Brasilia Univ., DF (Brazil). Dept. de Geociencias; Pimentel, Marcio M. [Fundacao Jorge Duprat Figueiredo de Seguranca e Medicina do Trabalho (FUNDACENTRO), Sao Paulo, SP (Brazil)]. E-mail: walter.pedreira@fundacentro.gov.br

    2005-11-15

    several years, IPEN/CNEN-SP has been working in the separation of the Rare Earth (RE) elements. A simple and economic procedure for the purification of technical grade cerium concentrate is described. The highly pure cerium dioxide is designed to be used as spectrochemical standard. It is obtained by association of the fractional precipitation technique, in the system RECl{sub 3}/NH{sub 4}OH/ Air/H{sub 2}O{sub 2}, to enrich the cerium up to 90% and then it is upgraded by ion exchange technique to 99.99% CeO{sub 2}. The quality control warranty was accomplished by inductively coupled mass spectrometry (ICP-MS) and neutron activation analysis. The collected values for the accompanying Rare Earth elements in a CeO{sub 2} sample are the following (ppm): La(36), Pr(19), Nd(161), Sm(11), Eu(5.3), Gd(113), Tb(89), Dy(2), Ho(0.05), Er(1), Tm(<0.05), Yb(11), Lu(19) and Y(2.1), respectively. The purity of this cerium oxide is comparable to the international spectrographic standards. (author)

  10. Preparation and Characterization of Pure Rutile TiO2 Nanoparticles for Photocatalytic Study and Thin Films for Dye-Sensitized Solar Cells

    Directory of Open Access Journals (Sweden)

    Huei-Siou Chen

    2011-01-01

    Full Text Available Pure rutile-phase TiO2 (r-TiO2 was synthesized by a simple one pot experiment under hydrothermal condition using titanium (IV n-butoxide as a Ti-precursor and HCl as a peptizer. The TiO2 products were characterized by XRD, TEM, ESCA, and BET surface area measurement. The r-TiO2 were rodlike in shape with average size of ∼61×32 nm at hydrothermal temperature of 220°C for 10 h. Hydrothermal treatment at longer reaction time increased the tendency of crystal growth and also decreased the BET surface area. The degradation of methylene blue was selected as a test reaction to confer the photocatalytic activity of as-obtained r-TiO2. The results showed a strong correlation between the structure evolution, particle size, and photocatalytic performance of r-TiO2. Furthermore, the r-TiO2-based solar cell was prepared for the photovoltaic characteristics study, and the best efficiency of ~3.16% was obtained.

  11. Extractive spectrophotometric determination of five selected drugs by ion-pair complex formation with bromothymol blue in pure form and pharmaceutical preparations

    Directory of Open Access Journals (Sweden)

    Sneha G. Nair

    2015-12-01

    Full Text Available Simple, precise, selective, and expeditious spectrophotometric methods have been developed for the determination of itopride (ITO, midodrine (MID, diclofenac (DIC, mesalamine (MES, and sumatriptan (SUM in their pure form as well as in pharmaceutical preparations. The method was based on ion-pair complex formation between the drugs and anionic dye, bromothymol blue in an acidic medium (pH 2.0–4.0. The yellow colored complexes formed were quantitatively extracted into chloroform and measured at 411, 410, 413, 412, and 414 nm wavelength for ITO, MID, DIC, MES, and SUM, respectively. Beer’s law was obeyed in the concentration range of 3.0–30 µg/mL for ITO, 1.0–20 µg/mL for MID, 1.5–40 µg/mL for DIC, 1.2–12 µg/mL for MES, and 0.5–15 µg/mL for SUM. The stoichiometry of the complexes formed between the drugs and the dye was 1:1 as determined by Job’s method of continuous variation. The association constant (KIP of the ion-pair complexes formed was evaluated using Benesi–Hildebrand equation. Limit of detection, limit of quantification, and Sandell’s sensitivity of the methods were also estimated. The proposed methods were successfully employed for the determination of these drugs in their pharmaceutical dosage forms.

  12. DIRECT PREPARATION OF HIGH PURE γ-ALUMINA FROM SODIUM ALUMINATE%由偏铝酸钠直接制取高纯γ-Al2O3

    Institute of Scientific and Technical Information of China (English)

    高建峰; 徐春彦; 王建中; 王久芬; 庄源益

    2003-01-01

    The purification of mother liquor containing sodium aluminate by using desilication agent and the preparation of high pure pseudo-boehmite and gamma alumina are reported. The sodium aluminate in the mother liquor coming from Shanxi Aluminium Plant is treated with home-made desilication agent, the ratios of SiO2/Al2O3 and Fe2Oa/Al2O3 in treated-solution are below 0.01%. The pseudo-boehmite is obtained with buffer solution deposition in which ammonia gas acts as a circulating medium. The specific surface area of pseudo-boehime powder reaches up to 300m2·g-1 and pore volume reaches about 0.7 ml·g-1. The content of sodium in pseudo-boehime is below 0. 005% after treating the pseudo-boehime with a sodium removal agent. The quality of this product is comparable to the SB powder made in Germany.Gamma alumina with a larger specific surface area and pore volume is obtained by temperature programmed calcination of pseudo-boehmite.

  13. TECHNICAL AND ORGANISATIONAL ASPECTS OF PRODUCTION PREPARATION ON THE EXAMPLE OF DOOR FACTORY

    Directory of Open Access Journals (Sweden)

    Anna Rudawska

    2013-12-01

    Full Text Available The aim of the work is the analysis of the organization of production, and door-producing undertaking to propose technical solutions that could improve production efficiency and reduce costs. On the basis of an analysis of the existing organizational and technical production plant a proposal of changes was presented. These changes depend on replacing a group of machines with one CNC EGURKO automatic line.

  14. Impact of Digital Tooth Preparation Evaluation Technology on Preclinical Dental Students' Technical and Self-Evaluation Skills.

    Science.gov (United States)

    Gratton, David G; Kwon, So Ran; Blanchette, Derek; Aquilino, Steven A

    2016-01-01

    The aim of this study was to evaluate the effect of digital tooth preparation imaging and evaluation technology on dental students' technical abilities, self-evaluation skills, and the assessment of their simulated clinical work. A total of 80 second-year students at one U.S. dental school were assigned to one of three groups: control (n=40), E4D Compare (n=20), and Sirona prepCheck (n=20). Students in the control group were taught by traditional teaching methodologies, and the technology-assisted groups received both traditional training and supplementary feedback from the corresponding digital system. Three outcomes were measured: faculty technical score, self-evaluation score, and E4D Compare scores at 0.30 mm tolerance. Correlations were determined between the groups' scores from visual assessment and self-evaluation and between the visual assessment and digital scores. The results showed that the visual assessment and self-evaluation scores did not differ among groups (p>0.05). Overall, correlations between visual and digital assessment scores were modest though statistically significant (5% level of significance). These results suggest that the use of digital tooth preparation evaluation technology did not impact the students' prosthodontic technical and self-evaluation skills. Visual scores given by faculty and digital assessment scores correlated moderately in only two instances.

  15. Proposed Draft Military Handbook for Preparation of View Packages in Support of Electronic Technical Manuals (IETMs)

    Science.gov (United States)

    1990-07-01

    and Charles S. Sawyer, "Test and Evaluation of The Navy Technical Information Presentation System (NTIPS), AN/SPA-25D Test Results," DTRC-88/035 (Sep...and Charles S. Sawyer, "Test and Evaluation of The Navy Technical Information Presentation System (NTIPS), AN/SPA-25D Test Results," DTRC-88/035 (Sep...F. Tittle 1 NOSC 1 EER Systems R. Smillie N. Bukowski 1 NUSC 1 EG&G A. Valm L. Snodgrass 2 NTSC I General Dynamics W. Rizzo Electronic Division IL

  16. Preparing Technical Communication Students to Function as User Advocates in a Self-Service Society

    Science.gov (United States)

    Cleary, Yvonne; Flammia, Madelyn

    2012-01-01

    The self-service nature of today's society means that technical communicators are needed more than ever before since users may find themselves struggling to make sense of online documentation with minimal support from the institutions that provide it. Certain demographics within the user population (older adults, disabled persons, non-native…

  17. Color-coded digital subtraction angiography in the management of a rare case of middle cerebral artery pure arterial malformation. A technical and case report.

    Science.gov (United States)

    Feliciano, Caleb E; Pamias-Portalatin, Eva; Mendoza-Torres, Jorge; Effio, Euclides; Moran, Yadira; Rodriguez-Mercado, Rafael

    2014-12-01

    The advent of flow dynamics and the recent availability of perfusion analysis software have provided new diagnostic tools and management possibilities for cerebrovascular patients. To this end, we provide an example of the use of color-coded angiography and its application in a rare case of a patient with a pure middle cerebral artery (MCA) malformation. A 42-year-old male chronic smoker was evaluated in the emergency room due to sudden onset of severe headache, nausea, vomiting and left-sided weakness. Head computed tomography revealed a right basal ganglia hemorrhage. Cerebral digital subtraction angiography (DSA) showed a right middle cerebral artery malformation consisting of convoluted and ectatic collateral vessels supplying the distal middle cerebral artery territory-M1 proximally occluded. An associated medial lenticulostriate artery aneurysm was found. Brain single-photon emission computed tomography with and without acetazolamide failed to show problems in vascular reserve that would indicate the need for flow augmentation. Twelve months after discharge, the patient recovered from the left-sided weakness and did not present any similar events. A follow-up DSA and perfusion study using color-coded perfusion analysis showed perforator aneurysm resolution and adequate, albeit delayed perfusion in the involved vascular territory. We propose a combined congenital and acquired mechanism involving M1 occlusion with secondary dysplastic changes in collateral supply to the distal MCA territory. Angiographic and cerebral perfusion work-up was used to exclude the need for flow augmentation. Nevertheless, the natural course of this lesion remains unclear and long-term follow-up is warranted.

  18. The relationship between purely stochastic sampling error and the number of technical replicates used to estimate concentration at an extreme dilution.

    Science.gov (United States)

    Irwin, Peter L; Nguyen, Ly-Huong T; Chen, Chin-Yi

    2010-09-01

    For any analytical system the population mean (μ) number of entities (e.g., cells or molecules) per tested volume, surface area, or mass also defines the population standard deviation (σ = square root(μ)). For a preponderance of analytical methods, σ is very small relative to μ due to their large limit of detection (>10(2) per volume). However, in theory at least, DNA-based detection methods (real-time, quantitative or qPCR) can detect ≈ 1 DNA molecule per tested volume (i.e., μ ≈ 1) whereupon errors of random sampling can cause sample means (mean) to substantially deviate from μ if the number of samplings (n), or "technical replicates", per observation is too small. In this work the behaviors of two measures of sampling error (each replicated fivefold) are examined under the influence of n. For all data (μ = 1.25, 2.5, 5, 7.5, 10, and 20) a large sample of individual analytical counts (x) were created and randomly assigned into N integral-valued sub-samples each containing between 2 and 50 repeats (n) whereupon N × n = 322 to 361. From these data the average μ-normalized deviation of σ from each sub-sample's standard deviation estimate (s(j), j = 1 to N; N = 7 [n = 50] to 180 [n = 2]) was calculated (Δ). Alternatively, the average μ-normalized deviation of μ from each sub-sample's mean estimate (mean(j)) was also evaluated (Δ'). It was found that both of these empirical measures of sampling error were proportional to ⁻²√n . μ. Derivative (∂/∂n · Δ or Δ') analyses of our results indicate that a large number of samplings (n ≈ 33 +/- 3.1) are requisite to achieve a nominal sampling error for samples with a μ ≈ 1. This result argues that pathogen detection is most economically performed, even using highly sensitive techniques such as qPCR, when some form of organism cultural enrichment is utilized and which results in a binomial response. Thus, using a specific gene PCR-based (+ or -) most probable number (MPN

  19. Technical Report (Final): Development of Solid State Reagents for Preparing Radiolabeled Imaging Agents

    Energy Technology Data Exchange (ETDEWEB)

    Kabalka, George W

    2011-05-20

    The goal of this research was on the development of new, rapid, and efficient synthetic methods for incorporating short-lived radionuclides into agents of use in measuring dynamic processes. The initial project period (Year 1) was focused on the preparation of stable, solid state precursors that could be used to efficiently incorporate short-lived radioisotopes into small molecules of use in biological applications (environmental, plant, and animal). The investigation included development and evaluation of new methods for preparing carbon-carbon and carbon-halogen bonds for use in constructing the substrates to be radiolabeled. The second phase (Year 2) was focused on developing isotope incorporation techniques using the stable, boronated polymeric precursors. The final phase (Year 3), was focused on the preparation of specific radiolabeled agents and evaluation of their biodistribution using micro-PET and micro-SPECT. In addition, we began the development of a new series of polymeric borane reagents based on polyethylene glycol backbones.

  20. Integrating occupational safety and health information into vocational and technical education and other workforce preparation programs.

    Science.gov (United States)

    Schulte, Paul A; Stephenson, Carol Merry; Okun, Andrea H; Palassis, John; Biddle, Elyce

    2005-03-01

    The high rates of injury among young workers are a pressing public health issue, especially given the demand of the job market for new workers. Young and new workers experience the highest rates of occupational injuries of any age group. Incorporating occupational safety and health (OSH) information into the more than 20 000 vocational and other workforce preparation programs in the United States might provide a mechanism for reducing work-related injuries and illnesses among young and new workers. We assessed the status of including OSH information or training in workforce preparation programs and found there is an inconsistent emphasis on OSH information.

  1. MULTIAGENT TECHNOLOGIES’ METHOD IN MANAGING BUSINESS-PROCESSES OF THE TECHNICAL PREPARING FOR PRODUCTION

    Directory of Open Access Journals (Sweden)

    P.N. Pavlenko

    2005-02-01

    Full Text Available  The method of managing the process of the extended productions technological preparation is given. The method is used for integrating the automated systems of industrial assignment of  CAD/CAM/SAPP and ERP systems.

  2. Sintering and dielectric properties of a technical porcelain prepared from economical natural raw materials

    Energy Technology Data Exchange (ETDEWEB)

    Kasrani, S.; Harabi, A.; Barama, S.-E.; Foughali, L.; Benhassine, M. T., E-mail: souad478@yahoo.fr, E-mail: harabi52@gmail.com, E-mail: sebarama@usa.com, E-mail: foughali_lazhar@yahoo.fr, E-mail: mtb25dz@gmail.com [Ceramics Lab. Mentouri University of Constantine (Algeria); Aldhayan, D.M., E-mail: aldhayan@ksu.edu.sa [Chemistry Department, Riyadh, King Saud University (Saudi Arabia)

    2016-10-15

    In this study, the production of a technical porcelain, for the ceramic dielectric applications by using economical natural raw materials, was investigated. The basic porcelain composition was selected consisting of 30 wt% kaolin, 45 wt% potash-feldspar and 25 wt% quartz. The obtained phases in the sintered samples were investigated by X-ray diffraction, Fourier transform infrared spectroscopy analysis, and scanning electron microscopy images. It has been confirmed by these techniques that the main crystalline phases were quartz and mullite. Dielectric measurements of technical porcelains have been carried out at 1 kHz from room temperature to 200 °C. The dielectric constant, loss factor, dielectric loss tangent, and resistivity of the porcelain sample sintered at 1160 °C were 22-25, 0.32-1.80, 0.006-0.07, and 0.2-9 x 10{sup 13} Ω.cm, respectively. The value of dielectric constant was significantly high when compared to that of conventional porcelains which did not exceed generally 9. (author)

  3. Sintering and dielectric properties of a technical porcelain prepared from economical natural raw materials

    Directory of Open Access Journals (Sweden)

    S. Kasrani

    Full Text Available Abstract In this study, the production of a technical porcelain, for the ceramic dielectric applications by using economical natural raw materials, was investigated. The basic porcelain composition was selected consisting of 30 wt% kaolin, 45 wt% potash-feldspar and 25 wt% quartz. The obtained phases in the sintered samples were investigated by X-ray diffraction, Fourier transform infrared spectroscopy analysis, and scanning electron microscopy images. It has been confirmed by these techniques that the main crystalline phases were quartz and mullite. Dielectric measurements of technical porcelains have been carried out at 1 kHz from room temperature to 200 °C. The dielectric constant, loss factor, dielectric loss tangent, and resistivity of the porcelain sample sintered at 1160 °C were 22-25, 0.32-1.80, 0.006-0.07, and 0.2-9 x 1013 Ω.cm, respectively. The value of dielectric constant was significantly high when compared to that of conventional porcelains which did not exceed generally 9.

  4. Technical, economic and environmental investigation of using district heating to prepare domestic hot water in Chinese multi-storey buildings

    DEFF Research Database (Denmark)

    Zhang, Lipeng; Xia, Jianjun; Thorsen, Jan Eric;

    2016-01-01

    utilizes the industrial waste heat to prepare DHW via the DH network. A building model of a multi-storey building in Beijing was developed to investigate the technical feasibility. An economic evaluation was made using net present value to compare the annualized cost for individual water heaters and flat......The development of DH (District Heating) is an environmentally friendly and energy-efficient strategy in China. Currently, the vast majority of DH systems are SH (Space Heating) only and do not provide DHW (Domestic Hot Water). DHW is mainly produced by individual water heaters due to the cost......-effective issues of the centralized DHW systems. From the perspective of long-term development, DHW produced via DH systems would be more sustainable because DH is an important precondition for an environmental safe use of domestic waste fuels. This paper presents an approach that uses flat stations meanwhile...

  5. Effect of sonochemical synthesized TiO2 nanoparticles and coagulation bath temperature on morphology, thermal stability and pure water flux of asymmetric cellulose acetate membranes prepared via phase inversion method

    Directory of Open Access Journals (Sweden)

    Abedini Reza

    2012-01-01

    Full Text Available In this study, asymmetric pure CA and CA/ TiO2 composite membranes were prepared via phase inversion by dispersing TiO2 nanopaticles in the CA casting solutions induced by immersion precipitation in water coagulation bath. TiO2 nanoparticles, which were synthesized by the sonochemical method, were added into the casting solution with different concentrations. Effects of TiO2 nanoparticles concentration (0 wt. %, 5wt.%, 10wt.%, 15wt.%, 20wt.% and 25wt.% and coagulation bath temperature (CBT= 25°C, 50°C and 75°C on morphology, thermal stability and pure water flux (PWF of the prepared membranes were studied and discussed. Increasing TiO2 concentration in the casting solution film along with higher CBT resulted in increasing the membrane thickness, water content (WC, membrane porosity and pure water flux (PWF, also these changes facilitate macrovoids formation. Thermal gravimetric analysis (TGA shows that thermal stability of the composite membranes were improved by the addition of TiO2 nanopaticles. Also TGA results indicated that increasing CBT in each TiO2 concentration leads to the decreasing of decomposition temperature (Td of hybrid membranes.

  6. TECHNICAL SHEET OF BEILSCHMIEDIA MANNII (LAURACEAE SEED PREPARATION IN IVORY COAST

    Directory of Open Access Journals (Sweden)

    Alexis Drogba Sahoré

    2013-08-01

    Full Text Available The Seed of Beilschmiedia mannii (Lauraceae is a traditional vegetable, non-timber forest product (NTFP much consumed by some populations of the forest regions in Ivory Coast. It is rich in essential nutrients (carbohydrates, protein, fat and minerals (Ca, K, Mg, Fe which are important nutritional supplements to the diet often starchy (Plantain Foutou, yam Foutou, cassava Foutou, Placali, etc. of these populations. The aim of this study is to contribute to the promotion of foodstuff non wood forest products with this simple traditional method of preparing this little-known vegetable rich in protein (5.9 % - 7.16 % d. m.

  7. Technical preparations for the in-vessel 14 MeV neutron calibration at JET

    Energy Technology Data Exchange (ETDEWEB)

    Batistoni, P., E-mail: paola.batistoni@enea.it [ENEA, Department of Fusion and Nuclear Safety Technology, I-00044, Frascati, Rome (Italy); EUROfusion Consortium, Culham Science Centre, Abingdon, Oxon, OX14 3DB (United Kingdom); Popovichev, S. [CCFE, Culham Science Centre, Abingdon, Oxon, OX14 3DB (United Kingdom); EUROfusion Consortium, Culham Science Centre, Abingdon, Oxon, OX14 3DB (United Kingdom); Crowe, R. [Remote Applications in Challenging Environments (RACE), Culham Science Centre, Abingdon, Oxon, OX14 3DB (United Kingdom); EUROfusion Consortium, Culham Science Centre, Abingdon, Oxon, OX14 3DB (United Kingdom); Cufar, A. [Reactor Physics Division, Jožef Stefan Institute, Jamova cesta 39, SI-1000, Ljubljana (Slovenia); EUROfusion Consortium, Culham Science Centre, Abingdon, Oxon, OX14 3DB (United Kingdom); Ghani, Z. [CCFE, Culham Science Centre, Abingdon, Oxon, OX14 3DB (United Kingdom); EUROfusion Consortium, Culham Science Centre, Abingdon, Oxon, OX14 3DB (United Kingdom); Keogh, K. [Remote Applications in Challenging Environments (RACE), Culham Science Centre, Abingdon, Oxon, OX14 3DB (United Kingdom); EUROfusion Consortium, Culham Science Centre, Abingdon, Oxon, OX14 3DB (United Kingdom); Peacock, A. [JET Exploitation Unit, Abingdon, Oxon, OX14 3DB (United Kingdom); Price, R. [Remote Applications in Challenging Environments (RACE), Culham Science Centre, Abingdon, Oxon, OX14 3DB (United Kingdom); EUROfusion Consortium, Culham Science Centre, Abingdon, Oxon, OX14 3DB (United Kingdom); Baranov, A.; Korotkov, S.; Lykin, P.; Samoshin, A. [All-Russia Research Institute of Automatics (VNIIA), 22, Sushchevskaya str., 127055, Moscow (Russian Federation)

    2017-04-15

    Highlights: • The JET 14 MeV neutron calibration requires a neutron generator to be deployed inside the vacuum vessel by means of the remote handling system. • A neutron generator of suitable intensity and compliant with physics, remote handling and safety requirements has been identified and procured.The scientific programme of the preparatory phase devoted to fully characterizing the selected 14 MeV neutron generator is discussed. • The aim is to measure the absolute neutron emission rate within (± 5%) and the energy spectrum of emitted neutron as a function of angles. • The physics preparations, source issues, safety and engineering aspects required to calibrate directly the JET neutron detectors are discussed. - Abstract: The power output of fusion devices is measured from their neutron yields which relate directly to the fusion yield. In this paper we describe the devices and methods that have been prepared to perform a new in situ 14 MeV neutron calibration at JET in view of the new DT campaign planned at JET in the next years. The target accuracy of this calibration is ±10% as required for ITER, where a precise neutron yield measurement is important, e.g., for tritium accountancy. In this paper, the constraints and early decisions which defined the main calibration approach are discussed, e.g., the choice of 14 MeV neutron source and the deployment method. The physics preparations, source issues, safety and engineering aspects required to calibrate directly the JET neutron detectors are also discussed. The existing JET remote-handling system will be used to deploy the neutron source inside the JET vessel. For this purpose, compatible tooling and systems necessary to ensure safe and efficient deployment have been developed. The scientific programme of the preparatory phase is devoted to fully characterizing the selected 14 MeV neutron generator to be used as the calibrating source, obtain a better understanding of the limitations of the

  8. Part II: preparing and assessing first-year radiology resident on-call readiness technical implementation.

    Science.gov (United States)

    Yam, Chun-Shan; Kruskal, Jonathan; Pedrosa, Ivan; Kressel, Herbert

    2006-06-01

    The effectiveness of using a Digital Imaging and Communications in Medicine (DICOM)-based interactive examination system in evaluating the readiness of first year radiology residents before taking overnight call in the emergency department (ED) was reported in part I of this article. This report describes technical aspects for the design and implementation of this system. The examination system consists of two modules: Data Collection and Image Viewing. The Data Collection module was a personal computer (PC)-based DICOM storage server based on a free public domain software package, the Mallinckrodt Central Test Node. The Image Viewing module was a Java-based DICOM viewer created using another freeware package: zDicom ActiveX component. The examination takes place once a year at the end of the first 6-month rotation. Cases selected for the examination were actual clinical cases according to the American Society of Emergency Radiology core curriculum. In the 3-hour timed examination, each resident was required to read the cases and provide clinical findings and recommendations. Upper-level residents also participated in the examination to serve as a control. Answers were scored by two staff radiologists. We have been using this examination system successfully in our institution since 2003 to evaluate the readiness of the first-year residents before they take overnight call in the ED. This report describes a step-by-step procedure for implementing this system into a PC-based platform. This DICOM viewing software is available as freeware to other academic radiology institutions. The total cost for implementing this system is approximately 2000 US dollars.

  9. Preparing Technical Workers for the New Industrial Era: The Need for a Fundamental Shift in Federal Policy toward Technical Education. Position Paper.

    Science.gov (United States)

    National Coalition for Advanced Manufacturing, Washington, DC.

    The United States will not be competitive in the global economy of the 21st century without a technically trained work force. Community colleges and secondary schools offering technical programs are becoming increasingly important to local businesses as companies rely on a combination of schools and on-the-job training to help their employees…

  10. Fiber-reinforced resin coating for endocrown preparations: a technical report.

    Science.gov (United States)

    Rocca, G T; Rizcalla, N; Krejci, I

    2013-01-01

    Coronal rehabilitation of endodontically treated posterior teeth is still a controversial issue. Although the use of classical crowns supported by radicular metal posts remains widespread in dentistry, their invasiveness has been largely criticized. New materials and therapeutic options based entirely on adhesion are available nowadays, from direct composite resins to indirect endocrowns. They allow for a more conservative, faster, and less expensive dental treatment. However, the absence of a metal or high-strength ceramic substructure as in full-crown restorations can expose this kind of restoration to a higher risk of irreversible fracture in case of crack propagation. The aim of this case report is to present a technique to reinforce the cavity of an endodontically treated tooth by incorporating a fiber-reinforced composite (FRC) layer into the resin coating of the tooth preparation, before the final impressions of the cavity. This technique allows the use of FRCs in combination with any kind of restorative material for an adhesive overlay/endocrown.

  11. Improving the technical preparation of football players on the basis of the control of discriminative characteristics when performing combinations of techniques during a game

    Directory of Open Access Journals (Sweden)

    Mitova Olena

    2016-06-01

    Full Text Available The paper examines the issue of improving the technical preparation of football players during initial basic training. A special attention is paid to the development and experimental substantiation of the methods of technical preparation of young football players in an annual cycle at the stage of initial basic training on the basis of the control of discriminative characteristics when performing inseparable combinations of techniques during a game. An attempt was made to uncover the underlying causes of a low technical preparedness of football players at different stages of multi-year training and to implement an integrated scientific approach to improvement of the process of technical preparation of 10-11 years old football players in an annual cycle at the stage of initial basic training on the basis of the control of discriminative characteristics when performing inseparable combinations of techniques during competitive activity, along with the peculiarities of psychophysical condition and a level of development of physical qualities. This approach in teaching technical skills will be of interest to specialists and coaches in football, since the pedagogical experiment has determined the effectiveness of the developed methodology.

  12. Integrated coal preparation and CWF processing plant: Conceptual design and costing. Final technical report

    Energy Technology Data Exchange (ETDEWEB)

    McHale, E.T.; Paul, A.D.; Bartis, J.T. [Science Applications International Corp., McLean, VA (United States); Korkmaz, M. [Roberts and Schaefer Co., Salt Lake City, UT (United States)

    1992-12-01

    At the request of the US Department of Energy (DOE), Pittsburgh Energy Technology Center, a study was conducted to provide DOE with a reliable, documented estimate of the cost of producing coal-water fuel (CWF). The approach to the project was to specify a plant capacity and location, identify and analyze a suitable coal, and develop a conceptual design for an integrated coal preparation and CWF processing plant. Using this information, a definitive costing study was then conducted, on the basis of which an economic and sensitivity analysis was performed utilizing a financial evaluation model to determine a price for CWF in 1992. The design output of the integrated plant is 200 tons of coal (dry basis) per hour. Operating at a capacity factor of 83 percent, the baseline design yields approximately 1.5 million tons per year of coal on a dry basis. This is approximately equivalent to the fuel required to continuously generate 500 MW of electric power. The CWF produced by the plant is intended as a replacement for heavy oil or gas in electric utility and large industrial boilers. The particle size distribution, particularly the top size, and the ash content of the coal in the CWF are specified at significantly lower levels than is commonly found in typical pulverized coal grinds. The particle top size is 125 microns (vs typically 300m{mu} for pulverized coal) and the coal ash content is 3.8 percent. The lower top size is intended to promote complete carbon burnout at less derating in boilers that are not designed for coal firing. The reduced mineral matter content will produce ash of very fine particle size during combustion, which leads to less impaction and reduced fouling of tubes in convective passages.

  13. A Model for Collaborative Laboratory Experiences between Higher Education and a High School Technical Preparation Program: Promoting Higher Education, Mentoring, and Research

    Science.gov (United States)

    Otterstetter, Ronald; Buser, Stacey; Kappler, Rachele; Herold, Kelly; Mullet, Nicole; Mullins, Nicole

    2011-01-01

    The Department of Sport Science and Wellness Education (SSWE) and the Athletic Health Care Technical Preparation (Tech Prep) Program (AHCTP) at The University of Akron (UA) are successfully fostering collaboration among a number of different entities (faculty members, allied health professionals, and undergraduate, graduate, and high school…

  14. Preparing to understand and use science in the real world: interdisciplinary study concentrations at the Technical University of Darmstadt.

    Science.gov (United States)

    Liebert, Wolfgang J

    2013-12-01

    In order to raise awareness of the ambiguous nature of scientific-technological progress, and of the challenging problems it raises, problems which are not easily addressed by courses in a single discipline and cannot be projected onto disciplinary curricula, Technical University of Darmstadt has established three interdisciplinary study concentrations: "Technology and International Development", "Environmental Sciences", and "Sustainable Shaping of Technology and Science". These three programmes seek to overcome the limitations of strictly disciplinary research and teaching by developing an integrated, problem-oriented approach. For example, one course considers fundamental nuclear dilemmas and uses role-playing techniques to address a controversy in the area of nuclear security. At the same time, incorporating interdisciplinary teaching into a university that is organized around mono- or multi-disciplinary faculties also poses a number of challenges. Recognition in disciplinary curricula, and appropriate organizational support and funding are examples of those challenges. It is expected that science and engineering students, empowered by such interdisciplinary study programmes, will be better prepared to act responsibly with regard to scientific and technological challenges.

  15. Preparation and Luminous Characters of High Pure Thallium Iodide%高纯碘化铊的制备及其发光特性

    Institute of Scientific and Technical Information of China (English)

    杨桂林; 何华强

    2001-01-01

    High pure thallium iodide was made through the process of dissolving thallium in nitric acid, precipitating thallium ion by potassium iodide then subliming thallium iodide in vacuum. A series of spherical composite halides containing thallium iodide was made. Thallium iodide is used as green luminous material. It is also used as addition agent contained in composite halides of thallium iodide for different forms of application. Luminous characters of thallium iodide used as luminous material in metal halide lamps are presented.%以金属铊为原料,用硝酸溶解-碘化钾沉淀-真空升华的方法制备了高纯碘化铊,并且制备出多种球形碘化铊复合卤化物。碘化铊既可以单独用作绿光材料,也可以作为添加剂与其它金属卤化物复合得到复合金属卤化物发光材料,满足不同的使用要求。文章用图表介绍了碘化铊用作金属卤化物灯发光材料时的发光特性。

  16. Extractive spectrophotometric determination of sulphonamide drugs in pure and pharmaceutical preparations through ion-pair formation with molybdenum(V thiocyanate in acidic medium

    Directory of Open Access Journals (Sweden)

    Faten A. Nour El-Dien

    2010-07-01

    Full Text Available A simple and sensitive extraction-spectrophotometric method is described for the determination of sulfonamide drugs, namely sulphamethoxazole, sulphaguanidine, sulphaquinoxaline, sulphametrole and sulphadimidine, in both pure form and in the dosage forms available in Egyptian markets. The method is based on ion-pair formation between the sulphonamides and Mo(V-thiocyanate inorganic complex in a sulphuric acid medium followed by extraction of the coloured ion-pairs with 1,2-dichloroethane. The optimum conditions are established. The method permits the determination of sulphonamide drugs over the concentration range of 5–50 μg ml−1. The Sandell sensitivity (S, molar absorptivity, correlation coefficient and regression equations, and limits of detection (LOD and quantification (LOQ are calculated. The law values of standard deviation (0.09–0.38 and relative standard deviation (0.10–0.550 reflect the accuracy and precision of the proposed method. The method is applicable for the assay of the investigated drugs in different dosage forms and the results are in good agreement with those obtained by the official pharmacopeial method.

  17. Dissipation-induced pure Gaussian state

    CERN Document Server

    Koga, Kei

    2011-01-01

    This paper provides some necessary and sufficient conditions for a general Markovian Gaussian master equation to have a unique pure steady state. The conditions are described by simple matrix equations, thus they can be easily applied to the so-called environment engineering for pure Gaussian state preparation. In particular, it is shown that for any given pure Gaussian state we can actually construct a dissipative process yielding that state as the unique steady state.

  18. Preparation of highly pure daidzin on oligo-β-cyclodextrin-Sepharose HP and investigation of chromatographic behavior of isoflavones by molecular docking.

    Science.gov (United States)

    Yang, Li; Li, Cong; Yuan, Tianhu; Tan, Tianwei; Zhang, Liqun

    2011-06-15

    A novel method using column chromatography on oligo-β-cyclodextrin-Sepharose HP for the preparation of high purity daidzin from crude soybean samples was proposed in this work. The isoflavone of daidzin in sample A and B was purified under the optimum mobile phase composed of methanol/acetic acid/water=20.0/8.0/72.0 (v/v/v) at a flow-rate of 1.0 mL/min in one-step operation with a purity of 97.2% and 98.1%, a recovery of 95.3% and 96.3% respectively. The target products in isolated fraction were detected and characterized by HPLC analysis and ESI-MS spectrum. Preparative separation with sample-load of up to 2.42 mg/mL medium gave satisfactory results for daidzin with the purities over 97% and recoveries approximately 90%. Molecular docking simulations were utilized to help demonstrate the inclusion complexation between β-cyclodextrin and the isoflavones in samples through inclusion geometries and calculations of the binding energies. The prediction of the elution orders with AUTODOCK and SURFLEX-DOCK were validated by the chromatographic results.

  19. 谈项目施工准备阶段的技术管理%On technical management at construction preparation phase of projects

    Institute of Scientific and Technical Information of China (English)

    杜晋刚

    2016-01-01

    Combining with the work experience,the paper illustrates the technical management measures at the program construction preparation from the familiarity with contracts,map checking,progress planning,special construction scheme compilation,and technical rechecking,so as to improve the economic benefits with the technical measures and realize the cost target.%结合工作经验,从熟悉合同、查看图纸、进度计划、专项施工方案编制、技术复核等方面,阐述了项目施工准备阶段的技术管理措施,旨在通过技术手段提高经济效益,从而实现目标成本。

  20. Preparation

    Directory of Open Access Journals (Sweden)

    M.M. Dardir

    2014-03-01

    Full Text Available Some hexanamide-mono and di-linoleniate esters were prepared by the reaction of linolenic acid and hexanamide (derived from the reaction of hexanoic acid and diethanolamine. The chemical structure for the newly prepared hexanamide-mono and di-linoleniate esters were elucidated using elemental analysis, (FTIR, H 1NMR and chemical ionization mass spectra (CI/Ms spectroscopic techniques. The results of the spectroscopic analysis indicated that they were prepared through the right method and they have high purity. The new prepared esters have high biodegradability and lower toxicity (environmentally friendly so they were evaluated as a synthetic-based mud (ester-based mud for oil-well drilling fluids. The evaluation included study of the rheological properties, filtration and thermal properties of the ester based-muds formulated with the newly prepared esters compared to the reference commercial synthetic-based mud.

  1. Pure drug nanoparticles in tablets: what are the dissolution limitations?

    Energy Technology Data Exchange (ETDEWEB)

    Heng, Desmond [Institute of Chemical and Engineering Sciences (Singapore); Ogawa, Keiko [Nitto Denko Co. Ltd., Medical Division (Japan); Cutler, David J.; Chan, Hak-Kim, E-mail: kimc@pharm.usyd.edu.a [University of Sydney, Advanced Drug Delivery Group, Faculty of Pharmacy, A15 (Australia); Raper, Judy A. [University of Wollongong, Vice Chancellor' s Unit (Australia); Ye Lin [University of Sydney, School of Aerospace, Mechanical and Mechatronic Engineering (Australia); Yun, Jimmy [Nanomaterials Technology Pty. Ltd. (Singapore)

    2010-06-15

    There has been increasing interests for drug companies to incorporate drug nanoparticles into their existing formulations. However, technical knowledge in this area is still in its infancy and more study needs to be done to stimulate growth in this fledging field. There is a need to scrutinize the performance of pure drug nanoparticles in tablets, particularly relating formulation variables to their dissolution performance. Application of the pure form, synthesized without the use of surfactants or stabilizers, is often preferred to maximize drug loading and also to minimize toxicity. Cefuroxime axetil, a poorly water-soluble cephalosporin antibiotic, was used as the model drug in the formulation development. Drug release rate, tablet disintegration time, tensile strength and energy of failure were predominantly influenced by the amount of super-disintegrant, amount of surfactant, compression force and diluent species, respectively. The compression rate had minimal impact on the responses. The main hurdle confronting the effective use of pure drug nanoparticles in tablets is the difficulty in controlling aggregation in solution, which could potentially be aggravated by the tabletting process. Through the use of elevated levels of surfactants (8 w/w% sodium dodecyl sulphate), drug release from the nanoparticle preparation was enhanced from 58.0 {+-} 2.7% to 72.3 {+-} 0.7% in 10 min. Hence, it is recommended that physical formulations for pure drug nanoparticles be focused on the particle de-aggregation step in solution, if much higher rates are to be desired. In conclusion, even though pure drug nanoparticles could be easily synthesized, limitations from aggregation may need to be overcome, before successful application in tablets can be fully realized.

  2. Preparation and Analysis of Pure Carbonaceous Preforms for Biomorphic Ceramics from Hemp Straw%汉麻秆基生物质陶瓷用纯炭坯体的制备与分析

    Institute of Scientific and Technical Information of China (English)

    齐景坤; 高建民

    2012-01-01

    Carbon powder from hemp straw was used as raw material, which was formed into pure carbonaceous preforms for reaction bonded silicon carbide (RB-SC) by dry pressing. These preforms were characterized according to their vertical density profile, microstructures and pore characteristics. Experimental results showed that the density of the preforms increased with increasing pressure until it reached 110 Mpa. When the pressure was 35 Mpa, pure carbonaceous performs with homogeneous pore distribution and microstructure characteristics could be obtained, and the pore size was mainly between 1 μm and 80 μm, which indicates that high quality RB-SC could be obtained by infiltrating the preforms prepared by dry pressing.%以汉麻秆芯炭粉为原料,采用干压成型工艺制备了生物质碳化硅陶瓷用多孔纯炭坯体,通过截面密度分析、SEM以及压汞测试等手段,对纯炭坯体的密度、显微结构和孔隙特征进行了分析.结果表明,成型压力在110MPa以下时,炭坯密度随压力升高而增加,达到110MPa后密度不再增加;成型坯体截面密度分布及显微分布均匀;压汞测试表明,压力为35 MPa时所得炭坯的孔径主要介于1~80 μm之间,具备制备高质量碳化硅陶瓷的理想条件.

  3. Technical support and preparations for the response to radiological emergencies; Soporte tecnico y preparativos para la respuesta a emergencias radiologicas

    Energy Technology Data Exchange (ETDEWEB)

    Cardenas H, J.; Ramos V, E.O.; Fernandez G, I.M.; Capote F, E.; Zerquera J, T.; Garcia L, O.; Lopez B, G.; Molina P, D.; Lamdrid B, A.I.; Benitez N, J.C.; Salgado M, M. [CPHR, Calle 20 No. 4113, e/41 y 47 Playa, CP 11300, La Habana (Cuba); Lopez F, Y.; Jerez V, P. [CNSN, Calle 28 e/5ta y 7ta, Playa, La Habana (Cuba)]. e-mail: cardenas@cphr.edu.cu

    2006-07-01

    The work picks up the efforts directed to elevate the technical capacity of the answer in front of the radiological emergencies. Expressing them by means of the actions carried out as for teaching, research and development and intervention before accidental radiological events. The same one reflects the leading role of the participant institutions in those marks of the answer system to radiological emergencies that for its technical level it satisfies the national and international demands in the matter. In execution of the mentioned goals research projects guided to endow to the national system of methodologies and procedures for the administration of radiological emergencies have been executed that favor the improvement of its technical and organizational capacities. As well as the postulates of the National Plan of Measures for Case of Catastrophes in the corresponding to radiological accidents. (Author)

  4. Rehabilitation of pure alexia

    DEFF Research Database (Denmark)

    Starrfelt, Randi; Ólafsdóttir, Rannveig Rós; Arendt, Ida-Marie

    2013-01-01

    Acquired reading problems caused by brain injury (alexia) are common, either as a part of an aphasic syndrome, or as an isolated symptom. In pure alexia, reading is impaired while other language functions, including writing, are spared. Being in many ways a simple syndrome, one would think...... that pure alexia was an easy target for rehabilitation efforts. We review the literature on rehabilitation of pure alexia from 1990 to the present, and find that patients differ widely on several dimensions like alexia severity, and associated deficits. Many patients reported to have pure alexia...... in the reviewed studies, have associated deficits like agraphia or aphasia and thus do not strictly conform to the diagnosis. Few studies report clear and generalisable effects of training, none report control data, and in many cases the reported findings are not supported by statistics. We can, however...

  5. Rehabilitation of pure alexia

    DEFF Research Database (Denmark)

    Starrfelt, Randi; Ólafsdóttir, Rannveig Rós; Arendt, Ida-Marie

    2013-01-01

    that pure alexia was an easy target for rehabilitation efforts. We review the literature on rehabilitation of pure alexia from 1990 to the present, and find that patients differ widely on several dimensions like alexia severity, and associated deficits. Many patients reported to have pure alexia......Acquired reading problems caused by brain injury (alexia) are common, either as a part of an aphasic syndrome, or as an isolated symptom. In pure alexia, reading is impaired while other language functions, including writing, are spared. Being in many ways a simple syndrome, one would think...... in the reviewed studies, have associated deficits like agraphia or aphasia and thus do not strictly conform to the diagnosis. Few studies report clear and generalisable effects of training, none report control data, and in many cases the reported findings are not supported by statistics. We can, however...

  6. Testing REACH draft technical guidance notes for conducting chemical safety assessments-the experience of a downstream user of a preparation.

    Science.gov (United States)

    Gade, Anne Lill; Ovrebø, Steinar; Hylland, Ketil

    2008-07-01

    The goal of REACH is the safe use of chemicals. This study examines the efficiency and usefulness of two draft technical guidance notes in the REACH Interim Project 3.2-2 for the development of the chemical safety report and exposure scenarios. A case study was carried out for a paint system for protection of structural steel. The focuses of the study were risk assessment of preparations based on Derived No Effect Level (DNEL) and Predicted No Effect Concentrations (PNEC) and on effective and accurate communication in the supply chain. Exposure scenarios and generic descriptions of uses, risk management measures, and exposure determinants were developed. The study showed that communication formats, software tools, and guidelines for chemical risk assessment need further adjustment to preparations and real-life situations. Web platforms may simplify such communication. The downstream formulator needs basic substance data from the substance manufacturer during the pre-registration phase to develop exposure scenarios for preparations. Default values need to be communicated in the supply chain because these were critical for the derivation of applicable risk management demands. The current guidelines which rely on the available toxicological knowledge are insufficient to advise downstream users on how to develop exposure scenarios for preparations.

  7. 纯聚脲技术应用于金属腐蚀防护的技术优势及展望%Technical Advantages and Prospects of Pure Polyurea Technology Applied in Metal Corrosion Protection

    Institute of Scientific and Technical Information of China (English)

    高金岗; 李晶; 黄微波; 何鑫; 陈凯华

    2014-01-01

    Several important metal corrosion mechanism were introduced. The metal corrosion protection principle of isolation,corrosion inhibitor and electrochemical protection etc. and the application situation were reviewed. The definition of pure polyurea and the technology advantage of pure polyurea technology applied in the metal corrosion protection were expounded. The applicaton technology point of the pure polyurea in the process of metal corrosion protection was introduced. It pointed out that pure polyurea technology had absolute advantages to deal with various complex environment of metal corrosion and would have more extensive application prospect in the future.%介绍了几种重要的金属腐蚀机理,并综述了隔离法、缓蚀剂法、电化学保护法等几种常见的金属腐蚀防护方法的原理以及应用情况。重点阐述了纯聚脲的定义及其应用于金属腐蚀防护的技术优势,并介绍了金属腐蚀防护过程中纯聚脲的施工工艺要领。指出纯聚脲技术对于应对各种复杂的金属腐蚀环境具有绝对优势,在未来金属腐蚀防护领域中将有更加广阔的应用前景。

  8. Preparation of a technology development roadmap for the Accelerator Transmutation of Waste (ATW) System : report of the ATW separations technologies and waste forms technical working group.

    Energy Technology Data Exchange (ETDEWEB)

    Collins, E.; Duguid, J.; Henry, R.; Karell, E.; Laidler, J.; McDeavitt, S.; Thompson, M.; Toth, M.; Williamson, M.; Willit, J.

    1999-08-12

    In response to a Congressional mandate to prepare a roadmap for the development of Accelerator Transmutation of Waste (ATW) technology, a Technical Working Group comprised of members from various DOE laboratories was convened in March 1999 for the purpose of preparing that part of the technology development roadmap dealing with the separation of certain radionuclides for transmutation and the disposal of residual radioactive wastes from these partitioning operations. The Technical Working Group for ATW Separations Technologies and Waste Forms completed its work in June 1999, having carefully considered the technology options available. A baseline process flowsheet and backup process were identified for initial emphasis in a future research, development and demonstration program. The baseline process combines aqueous and pyrochemical processes to permit the efficient separation of the uranium, technetium, iodine and transuranic elements from the light water reactor (LWR) fuel in the head-end step. The backup process is an all- pyrochemical system. In conjunction with the aqueous process, the baseline flowsheet includes a pyrochemical process to prepare the transuranic material for fabrication of the ATW fuel assemblies. For the internal ATW fuel cycle the baseline process specifies another pyrochemical process to extract the transuranic elements, Tc and 1 from the ATW fuel. Fission products not separated for transmutation and trace amounts of actinide elements would be directed to two high-level waste forms, one a zirconium-based alloy and the other a glass/sodalite composite. Baseline cost and schedule estimates are provided for a RD&D program that would provide a full-scale demonstration of the complete separations and waste production flowsheet within 20 years.

  9. 熔盐法制备单一相Bi12SiO20粉体%Preparation of Pure Bi12SiO20 Powder by Molten Salt Method

    Institute of Scientific and Technical Information of China (English)

    鲁俊雀; 王秀峰; 江红涛; 许雅琴

    2011-01-01

    A novel process for synthesizing Bi12 SiO20 powders at lower temperature was presented in this paper. Pure Bi12 SiO20, powders was successfully prepared by a molten salt method using Bi2O3 and SiO2 as raw materials and KC1-K2CO3 as flux at 635℃. XRD patterns revealed that single phase Bi12 SiO20, powders could be successfully synthesized. SEM photographs showed that the cooling rate has significant effects on the size and morphology of the particles. In addition, with the increase of the molten salt content, the grain size increased and the agglomeration of the Bi12 SiO20 powders decreased apparently.%本文报道了一种较低温度下合成单一相Bi12SiO20粉体的新方法.以Bi2O3和SiO2为原料,KCl-K2CO3为熔剂,采用熔盐法于635℃合成了Bi12SiO20粉体.XRD分析表明该粉体为单一相Bi12SiO20,SEM分析显示冷却速率对合成Bi12SiO20粉体的尺寸及形貌有重要影响;此外,合成粉体的尺寸随着盐含量的增加而增大,且粉体团聚现象明显减弱.

  10. Pure-tone Audiometer

    Science.gov (United States)

    Kapul, A. A.; Zubova, E. I.; Torgaev, S. N.; Drobchik, V. V.

    2017-08-01

    The research focuses on a pure-tone audiometer designing. The relevance of the study is proved by high incidence of an auditory analyser in older people and children. At first, the article provides information about subjective and objective audiometry methods. Secondly, we offer block-diagram and basic-circuit arrangement of device. We decided to base on STM32F407VG microcontroller and use digital pot in the function of attenuator. Third, we implemented microcontroller and PC connection. C programming language is used for microcontroller’s program and PC’s interface. Fourthly, we created the pure-tone audiometer prototype. In the future, we will implement the objective method ASSR in addition to pure-tone audiometry.

  11. Preparo de bibliografia para uma publicação técnica Preparing bibliography for a technical paper

    Directory of Open Access Journals (Sweden)

    Nelly Bolliger

    1954-01-01

    Full Text Available Este trabalho foi preparado com o fito de facilitar, aos colaboradores de BRAGANTIA, a citação de literatura, ao mesmo tempo simplificando a tarefa da redação. A citação de literatura, feita segundo as modernas regras biblioteconômicas, é simples, lógica, de fácil compreensão. Agrupadas aqui encontram-se tão sòmente as principais regras para uma correta citação bibliográfica.This paper presents some of the most practical rules concerning citation of literature in a technical paper. Articles for publication in BRAGANTIA must follow these rules.

  12. Dahlbeck and Pure Ontology

    Science.gov (United States)

    Mackenzie, Jim

    2016-01-01

    This article responds to Johan Dahlbeck's "Towards a pure ontology: Children's bodies and morality" ["Educational Philosophy and Theory," vol. 46 (1), 2014, pp. 8-23 (EJ1026561)]. His arguments from Nietzsche and Spinoza do not carry the weight he supposes, and the conclusions he draws from them about pedagogy would be…

  13. Dahlbeck and Pure Ontology

    Science.gov (United States)

    Mackenzie, Jim

    2016-01-01

    This article responds to Johan Dahlbeck's "Towards a pure ontology: Children's bodies and morality" ["Educational Philosophy and Theory," vol. 46 (1), 2014, pp. 8-23 (EJ1026561)]. His arguments from Nietzsche and Spinoza do not carry the weight he supposes, and the conclusions he draws from them about pedagogy would be…

  14. Influences of glycerol concentration on properties of natural pure cellulose membrane prepared by NMMO technology%甘油含量对NMMO工艺天然纯纤维素膜性能的影响

    Institute of Scientific and Technical Information of China (English)

    李冬娜; 马晓军; 王晓敏; 乔华

    2012-01-01

    以棉纤维素为原料,以NMMO(N-甲基吗啉-N-氧化物)为溶剂,以甘油为增塑剂制取天然纯纤维素包装膜,研究了不同甘油含量对纤维素膜性能的影响。结果表明,随着甘油含量的增加,纤维素膜的断裂伸长率随之增加,拉伸强度随之降低,二者变化幅度都很大;当甘油含量从2%增加到5%,纤维素膜的透油系数增加了13.4%,氧气透过率增加了3.0%,透湿系数增加了16.7%,透光率增加了22.4%,横向热收缩率增加了58.8%,纵向热收缩率增加了54.7%。可见,甘油含量对膜的透氧性影响较为微弱,但对力学性能、透油性、透湿性、透明度、热收缩率影响均较为显著。%Natural pure cellulose packaging films were prepared by means of the dissolution of cotton cellulose in NMMO and glycerol was used as plasticizer,the effects of different glycerol concentration on properties were studied,the results showed that elongation at break increase,but the tensile strength decrease with the increasing of glycerol concentration,and both change significantly;when the content increased from 2% to 5%,the oil transmission,oxygen permeation flux,water vapor permeability,the light transmittance,the transverse and longitudinal direction hot shrinkage rate increased by 13.4%,3.0%,16.7%,22.4%,58.8%,54.7%,respectively.It's clear that glycerol concentration had weak influence on oxygen permeation,but the mechanical properties,the oil permeability,the water vapor permeability,the transparency and hot shrinkage rate changed significantly.

  15. NaA分子筛膜渗透蒸发制备高纯糠醛%Preparation of High-Pure Furfural Through Pervaporation on NaA Zeolite Membranes

    Institute of Scientific and Technical Information of China (English)

    周志辉; 丁武龙; 王涛; 刘小青; 刘恒浪; 王金渠

    2013-01-01

    采用热浸渍晶种法制备了均匀致密的NaA分子筛膜,并用于糠醛脱水.考察了进料流量、进料温度和进料中糠醛含量对糠醛脱水性能的影响.实验结果表明,当进料温度为80℃、渗透侧压力小于100 Pa、流量为196 mL/min、进料中糠醛含量为93.7%(w)时,NaA分子筛膜对于水-糠醛的分离因数最高可达34 110;当进料温度为90℃时,分离因数约为12 000,膜的渗透通量可达1.79 kg/(m2·h);对进料中糠醛含量为89.6%(w)的水-糠醛混合液进行渗透蒸发浓缩,连续运行96 h后所得产品糠醛含量为99.5%(w),膜的平均渗透通量为0.60 kg/(m2·h).%Continuous and compact NaA zeolite membranes were synthesized by a hot dip-coating seeding method and applied to the preparation of high pure furfural by dehydration.The effects of feeding flowrate,feedstock temperature and furfural content in the feedstock on the dehydration of furfural were investigated.The results indicated that under the conditions of feedstock temperature 80 ℃,pressure of the penetrating side less than 100 Pa,feeding flowrate 196 mL/min and furfural content in the feedstock 93.7%(w),the separation factor of the NaA membranes could reach 34 110.Under the conditions of feedstock temperature 90 ℃ and separation factor 12 000,the flux could reach 1.79 kg/(m2 · h).The furfural content in the products was 99.5%(w) and the average penetration flux on the membranes was 0.60 kg/(m2 · h) when the furfural content in the feedstock was 89.6%(w) and after continuous pervaporation was carried out for 96 h.

  16. Technical Note: An improved guideline for rapid and precise sample preparation of tree-ring stable isotope analysis

    Science.gov (United States)

    Schollaen, K.; Baschek, H.; Heinrich, I.; Helle, G.

    2015-07-01

    The procedure of wood sample preparation, including tree-ring dissection, cellulose extraction, homogenization and finally weighing and packing for stable isotope analysis is labour intensive and time consuming. We present an elaborated methodical guideline from pre-analyses considerations, wood sample preparation through semi-automated chemical extraction of cellulose directly from tree-ring cross-sections to tree-ring dissection for high-precision isotope ratio mass spectrometry. This guideline reduces time and maximizes the tree-ring stable isotope data throughput significantly. The method was applied to ten different tree species (coniferous and angiosperm wood) with different wood growth rates and differently shaped tree-ring boundaries. The tree-ring structures of the cellulose cross-sections largely remained well identifiable. FTIR (Fourier transform infrared) spectrometry and the comparison of stable isotope values with classical method confirm chemical purity of the resultant cellulose. Sample homogenization is no longer necessary. Cellulose extraction is now faster, cheaper and more user friendly allowing (i) the simultaneous treatment of wood cross-sections of a total length of 180 cm (equivalent to 6 increment cores of 30 cm length) and thickness of 0.5 to 2 mm, and (ii) precise tree-ring separation at annual to high-resolution scale utilizing manual devices or UV-laser microdissection microscopes.

  17. Technical Note: An improved guideline for rapid and precise sample preparation of tree-ring stable isotope analysis

    Directory of Open Access Journals (Sweden)

    K. Schollaen

    2015-07-01

    Full Text Available The procedure of wood sample preparation, including tree-ring dissection, cellulose extraction, homogenization and finally weighing and packing for stable isotope analysis is labour intensive and time consuming. We present an elaborated methodical guideline from pre-analyses considerations, wood sample preparation through semi-automated chemical extraction of cellulose directly from tree-ring cross-sections to tree-ring dissection for high-precision isotope ratio mass spectrometry. This guideline reduces time and maximizes the tree-ring stable isotope data throughput significantly. The method was applied to ten different tree species (coniferous and angiosperm wood with different wood growth rates and differently shaped tree-ring boundaries. The tree-ring structures of the cellulose cross-sections largely remained well identifiable. FTIR (Fourier transform infrared spectrometry and the comparison of stable isotope values with classical method confirm chemical purity of the resultant cellulose. Sample homogenization is no longer necessary. Cellulose extraction is now faster, cheaper and more user friendly allowing (i the simultaneous treatment of wood cross-sections of a total length of 180 cm (equivalent to 6 increment cores of 30 cm length and thickness of 0.5 to 2 mm, and (ii precise tree-ring separation at annual to high-resolution scale utilizing manual devices or UV-laser microdissection microscopes.

  18. Efficiency of application of means of sports preparation of combat sportsmen in physical training of students of technical high school

    Directory of Open Access Journals (Sweden)

    Litvinenko A.M.

    2013-02-01

    Full Text Available The problem of efficiency of application of different volumes of trainings facilities of sporting single combats (on the example of kickboxing is considered in physical education of students. The complexity of influence of facilities of east single combats is shown on sportsmen. In an experiment took part 50 students of first-year of teaching in age 17-18 years. Tests were used: undercutting on a cross-bar, broad jumps from a place, at shuttle run of 4х9 m. Positive intercommunication of increase of volume of the training loading is shown by effectiveness of pedagogical process. It is set that increase of number of employments by students in kickboxing to three one time per a week allows for certain to improve the indexes of physical preparedness on the chosen tests. The higher level of technical preparedness of students is statistically confirmed applying the greater amount of physical exercises, sent to forming of skills of kickboxing. Distribution of students is educed on the tactical types of conduct of competition fight: 36 % is a playing manner, 44 % is a rate manner, 8 % is a manner of slog, 12 % is an universal manner. Offered to recommendation on the correction of volume of loading for the increase of didactic potential of employments on physical education.

  19. Purely Functional Structured Programming

    OpenAIRE

    Obua, Steven

    2010-01-01

    The idea of functional programming has played a big role in shaping today's landscape of mainstream programming languages. Another concept that dominates the current programming style is Dijkstra's structured programming. Both concepts have been successfully married, for example in the programming language Scala. This paper proposes how the same can be achieved for structured programming and PURELY functional programming via the notion of LINEAR SCOPE. One advantage of this proposal is that m...

  20. Purely Cortical Anaplastic Ependymoma

    Directory of Open Access Journals (Sweden)

    Flávio Ramalho Romero

    2012-01-01

    Full Text Available Ependymomas are glial tumors derived from ependymal cells lining the ventricles and the central canal of the spinal cord. It may occur outside the ventricular structures, representing the extraventicular form, or without any relationship of ventricular system, called ectopic ependymona. Less than fifteen cases of ectopic ependymomas were reported and less than five were anaplastic. We report a rare case of pure cortical ectopic anaplastic ependymoma.

  1. Purely tetrahedral quadruple systems

    Institute of Scientific and Technical Information of China (English)

    JI Lijun

    2006-01-01

    An oriented tetrahedron is a set of four vertices and four cyclic triples with the property that any ordered pair of vertices is contained in exactly one of the cyclic triples. A tetrahedral quadruple system of order n (briefly TQS(n)) is a pair (X,B), where X is an nelement set and B is a set of oriented tetrahedra such that every cyclic triple on X is contained in a unique member of B. A TQS(n) (X, B) is pure if there do not exist two oriented tetrahedra with the same vertex set. In this paper, we show that there is a pure TQS(n) if and only if n≡2,4(mod 6),n>4,or n≡1,5(mod 12). One corollary is that there is a simple two-fold quadruple system of order n if and only if n≡2,4 (mod 6) and n>4, or n≡1, 5 (mod 12).Another corollary is that there is an overlarge set of pure Mendelsohn triple systems of order n for n≡1,3(mod 6),n>3, or n≡0,4 (mod 12).

  2. Application of preparation process of high pure chlorine dioxide by electrolysis method in water treatment%电解法制高纯二氧化氯工艺在水处理中的应用

    Institute of Scientific and Technical Information of China (English)

    刘艳霞; 韩瑞雄; 赵红; 周俊波

    2011-01-01

    为了开发经济实用的二氧化氯消毒工艺,对电解法制备高纯二氧化氯工艺在水处理中的运用进行了研究.在最佳条件下,电解氯酸盐自动催化循环制备的二氧化氯纯度可达98%左右.通过二氧化氯杀菌除藻试验,讨论了二氧化氯用量以及原水pH对细菌、叶绿素a、藻类的去除率的影响.结果表明,二氧化氯用量在2 mg/L以上时,3者的去除率均达到90%以上.当二氧化氯用量为2 mg/L、原水pH为6~9时,3者的去除率不发生显著变化,并且二氧化氯的剩余质量浓度均控制在0.5 mg/L以下.消毒成本:生产1 kg二氧化氯成本可以控制在6元以内,当二氧化氯用量在0.5 ~2 mg/L时,1 t水的消毒成本为0.003~ 0.012元.%To develop an economical and practical disinfection technology of chlorine dioxide, the application of preparation process of high pure chlorine dioxide by electrolysis method in water treatment was studied. Under the best conditions, the purity of chlorine dioxide, which was prepared by electrolysis of chlorate solution with auto-catalytic cycling,can reach about 98% . Through the experiments of algae removal and sterilization,the influences of concentration of chlorine dioxide and pH of raw water on the removal rate of bacteria,chlorophyll A ,and algal were discussed. Results showed that when the mass concentration of chlorine dioxide was above 2 mg/L, the removal rates of bacteria, chlorophyll A, and algal could all reached above 90% . When the mass concentration of chlorine dioxide was 2 mg/L and pH of raw water was at 6 ~9,the removal rates of them could not occur significant change, and the mass concentration of residual chlorine dioxide was all under 0. 5 mg/L. Though accounting for the cost of water disinfection, the cost of per kilogram chlorine dioxide in the process can be controlled less than RMB 6 Yuan. When the invested amount of chlorine dioxide was at 0.5 ~2 mg/L,and the cost of per ton water disinfection

  3. Technical Advance: a new cell preparation strategy that greatly improves the yield of vital and functional Tregs and NKT cells.

    Science.gov (United States)

    Rissiek, Björn; Danquah, Welbeck; Haag, Friedrich; Koch-Nolte, Friedrich

    2014-03-01

    Release of NAD(+) during preparation of murine lymphocytes causes enzymatic ADP-ribosylation of cell-surface proteins on T cells, catalyzed by toxin-related ecto-ADP-ribosyltransferase, ARTC2. ADP-riboslyation activates the cytolytic P2X7 ion channel and affects, in particular, the vitality and function of Tregs and NKT cells. Here, we describe a simple method-injection of an ARTC2-blocking nanobody-to greatly improve Treg and NKT cell vitality and to preserve their function during in vitro assays and in adoptive-transfer experiments. Moreover, we present a method for the sorting of functional, primary NKT cells, based on coexpression of ARTC2 and NK1.1. Our results pave the way for the efficient ex vivo proliferation of Tregs and NKT cells and for new experimental and therapeutic uses of these important regulatory cells.

  4. PURE DRIVE GT

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    在2004年奥林匹克赛事中,中国的李婷,孙甜甜取得了中国网球第一个金牌一女子双打冠军。忘记不了当时李婷挥动着她的BABOLAT(百保力)网拍Pure Drive Zylon 360°激动地拥抱着孙甜甜吵闹着,幸福地哭着的情景。

  5. Pure de Sitter Supergravity

    CERN Document Server

    Bergshoeff, Eric A; Kallosh, Renata; Van Proeyen, Antoine

    2015-01-01

    Using superconformal methods we derive an explicit de Sitter supergravity action invariant under spontaneously broken local ${\\cal N}=1$ supersymmetry. The supergravity multiplet interacts with a nilpotent goldstino multiplet. We present a complete locally supersymmetric action including the graviton and the fermionic fields, gravitino and goldstino, no scalars. In the global limit when supergravity multiplet decouples, our action reproduces the Volkov-Akulov theory. In the unitary gauge where goldstino vanishes we recover pure supergravity with the positive cosmological constant. The classical equations of motion, with all fermions vanishing, have a maximally symmetric solution: de Sitter space.

  6. Conclusive discrimination among N equidistant pure states

    Energy Technology Data Exchange (ETDEWEB)

    Roa, Luis; Hermann-Avigliano, Carla; Salazar, R. [Departamento de Fisica, Universidad de Concepcion, Barrio Universitario, Casilla 160-C, Concepcion (Chile); Klimov, A. B. [Departamento de Fisica, Universidad de Guadalajara, Revolucion 1500, 44420 Guadalajara, Jalisco (Mexico)

    2011-07-15

    We find the allowed complex overlaps for N equidistant pure quantum states. The accessible overlaps define a petal-shaped area on the Argand plane. Each point inside the petal represents a set of N linearly independent pure states and each point on its contour represents a set of N linearly dependent pure states. We find the optimal probabilities of success of discriminating unambiguously in which of the N equidistant states the system is. We show that the phase of the involved overlap plays an important role in the probability of success. For a fixed overlap modulus, the success probability is highest for the set of states with an overlap with phase equal to zero. In this case, if the process fails, then the information about the prepared state is lost. For states with a phase different from zero, the information could be obtained with an error-minimizing measurement protocol.

  7. TECHNICAL COORDINATION

    CERN Multimedia

    Austin Ball

    Summary of progress since last CMS week. Ten years of construction work have been completed. CMS is closed, in very close to the ideal low luminosity configuration, and performed well in the first tests with LHC beam. Behind this encouraging news is the story of a summer of intense commitment by many teams (from the collaboration and 3 CERN departments) working together, against the clock and despite many minor setbacks, to ensure that the experiment was ready to play a leading role in the excitement of September 10. Following beampipe bakeout and refill with pure neon, a magnificent effort by the ECAL group and the pt 5 technical crew made it possible to install and commission all 4 ECAL endcap Dees before the end of August. In the shadow of this activity, the barrel and forward pixel trackers and part of the beam monitoring were installed within the vac tank. The pt 5 technical teams then succeeded in safely removing the 20t installation tables and their support blocks from beneath the already installed ...

  8. Pure laparoscopic augmentation ileocystoplasty.

    Science.gov (United States)

    Rebouças, Rafael B; Monteiro, Rodrigo C; Souza, Thiago N S de; Aragão, Augusto J de; Burity, Camila R T; Nóbrega, Júlio C de A; Oliveira, Natália S C de; Abrantes, Ramon B; Dantas Júnior, Luiz B; Cartaxo Filho, Ricardo; Negromonte, Gustavo R P; Sampaio, Rafael da C R; Britto, Cesar A

    2014-01-01

    Guillain-Barre syndrome is an acute neuropathy that rarely compromises bladder function. Conservative management including clean intermittent catheterization and pharmacotherapy is the primary approach for hypocompliant contracted bladder. Surgical treatment may be used in refractory cases to improve bladder compliance and capacity in order to protect the upper urinary tract. We describe a case of pure laparoscopic augmentation ileocystoplasty in a patient affected by Guillain-Barre syndrome. A 15-year-old female, complaining of voiding dysfunction, recurrent urinary tract infection and worsening renal function for three months. A previous history of Guillain-Barre syndrome on childhood was related. A voiding cystourethrography showed a pine-cone bladder with moderate post-void residual urine. The urodynamic demonstrated a hypocompliant bladder and small bladder capacity (190 mL) with high detrusor pressure (54 cmH2O). Nonsurgical treatments were attempted, however unsuccessfully.

  9. Pure Parsimony Xor Haplotyping

    CERN Document Server

    Bonizzoni, Paola; Dondi, Riccardo; Pirola, Yuri; Rizzi, Romeo

    2010-01-01

    The haplotype resolution from xor-genotype data has been recently formulated as a new model for genetic studies. The xor-genotype data is a cheaply obtainable type of data distinguishing heterozygous from homozygous sites without identifying the homozygous alleles. In this paper we propose a formulation based on a well-known model used in haplotype inference: pure parsimony. We exhibit exact solutions of the problem by providing polynomial time algorithms for some restricted cases and a fixed-parameter algorithm for the general case. These results are based on some interesting combinatorial properties of a graph representation of the solutions. Furthermore, we show that the problem has a polynomial time k-approximation, where k is the maximum number of xor-genotypes containing a given SNP. Finally, we propose a heuristic and produce an experimental analysis showing that it scales to real-world large instances taken from the HapMap project.

  10. Pure parsimony xor haplotyping.

    Science.gov (United States)

    Bonizzoni, Paola; Della Vedova, Gianluca; Dondi, Riccardo; Pirola, Yuri; Rizzi, Romeo

    2010-01-01

    The haplotype resolution from xor-genotype data has been recently formulated as a new model for genetic studies. The xor-genotype data is a cheaply obtainable type of data distinguishing heterozygous from homozygous sites without identifying the homozygous alleles. In this paper, we propose a formulation based on a well-known model used in haplotype inference: pure parsimony. We exhibit exact solutions of the problem by providing polynomial time algorithms for some restricted cases and a fixed-parameter algorithm for the general case. These results are based on some interesting combinatorial properties of a graph representation of the solutions. Furthermore, we show that the problem has a polynomial time k-approximation, where k is the maximum number of xor-genotypes containing a given single nucleotide polymorphisms (SNP). Finally, we propose a heuristic and produce an experimental analysis showing that it scales to real-world large instances taken from the HapMap project.

  11. New Perspective of High-Pure Silicon

    Institute of Scientific and Technical Information of China (English)

    2000-01-01

    @@The discovery in the middle of 1950s of the semi-con ducting properties of crystalline silicon has led to the impetu ous development of electric power facilities, the sun-power industry, and particularly, the microelectronic industry. The increasing demand for the high-pure silicon requires the production of synthetic crystals. The raw material for the syn thetic crystals, the so-called technical, or metallurgical silicon, is obtained from quartzite and quartz of superior quality by means of carbon-thermal reduction of silicon using an electric arc discharge. The complexity of the technological process, high cost of the related facilities, worsening environmental pollution, and narrow-mindedness of a raw material company are attributed to the rise in price of the final product-silicon plates, resulting in the fall in the production of high-pure silicon, normally used in sun storage batteries.

  12. First Batch of Topics of "Key Technical Standard Promotion Project" tarted, 270 Important National Standards or Professional Standards Will Be Prepared

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    @@ At the first working meeting of the "Key Technical Standard Promotion Project", an important project of the national scientific and technical support plan during the "11th Five Year" held recently in Beijing, the first group of 11 research topics for the "Key Technical Standard Promotion Project" was formally introduced.

  13. Summer Technical Students 2004

    CERN Multimedia

    Maximilien Brice

    2004-01-01

    About 100 technical and doctoral students arrive each year, undergraduates and post-graduates who are preparing diploma or doctoral theses in applied science and technology. They spend up to two years at the Laboratory, as technical students as part of their formal training for a recognised degree or its equivalent.

  14. Synthesis of highly phase pure BSCCO superconductors

    Science.gov (United States)

    Dorris, S.E.; Poeppel, R.B.; Prorok, B.C.; Lanagan, M.T.; Maroni, V.A.

    1995-11-21

    An article and method of manufacture (Bi, Pb)-Sr-Ca-Cu-O superconductor are disclosed. The superconductor is manufactured by preparing a first powdered mixture of bismuth oxide, lead oxide, strontium carbonate, calcium carbonate and copper oxide. A second powdered mixture is then prepared of strontium carbonate, calcium carbonate and copper oxide. The mixtures are calcined separately with the two mixtures then combined. The resulting combined mixture is then subjected to a powder in tube deformation and thermal processing to produce a substantially phase pure (Bi, Pb)-Sr-Ca-Cu-O superconductor. 5 figs.

  15. Technical Details of Sample Preparation for Inner Ear Organotypic Cultures%幼鼠内耳单个器官培养步骤及分类方法

    Institute of Scientific and Technical Information of China (English)

    于进涛; 丁大连; 李鹏; 高可雷; 蒋海燕; 孙虹; Richard J. Salvi

    2015-01-01

    In vitro culture techniques have important values in the investigation of inner ear cellular functions, organic development, cell degeneration and/or cell regeneration. Since structures of the inner ear are tiny and complex, sample prepara⁃tion for organotypic culture of the inner ear can be difficult, despite that relevant techniques have been introduced briefly in numerous earlier publications. Based upon decades of culturing practices with inner ear end-organs in this lab, this article ad⁃dresses the technical aspects of inner ear organic culturing by firstly presenting a brief review of various culture methods for different inner ear materials. Detailed step by step protocols for sample preparation, collection and culture are also described. This presentation provides detailed operative guidelines regarding useful techniques and tricks in micro-dissection of the whole membranous labyrinth, in sample preparation, collagen gel preparation and sample layer mountings with detailed illus⁃trations. We hope this article can serve as an additional reading material supplementing previous literatures that lack detailed technical information for beginners in this field.%内耳离体培养在研究内耳细胞功能、内耳组织发育再生、细胞损伤退化等方面具有重要价值。但由于内耳的组织结构微小复杂,其取材和培养具有较大难度,使该技术的普及和应用受到一定限制。本文在简要点评不同内耳离体培养方法优劣的基础上,结合本实验室多年来积累的实践经验,详细介绍了新生大鼠各个内耳终器取材及培养的具体步骤。从解剖迷路到分离终器,从凝胶制备到标本铺放,都有详细的操作指南,本文还针对各环节中的技术动作和关键事项进行了具体探讨并配以指导图例,希望这些内容能够弥补以往文献中抽象简略的条款式步骤所造成的实验困难,为开展内耳器官培养研究的初学者提供一定的帮助。

  16. TECHNICAL COORDINATION

    CERN Multimedia

    A. Ball and W. Zeuner

    2011-01-01

    In this report we will review the main achievements of the Technical Stop and the progress of several centrally-managed projects to support CMS operation and maintenance and prepare the way for upgrades. Overview of the extended Technical Stop  The principal objectives of the extended Technical Stop affecting the detector itself were the installation of the TOTEM T1 telescopes on both ends, the readjustment of the alignment link-disk in YE-2, the replacement of the light-guide sleeves for all PMs of both HFs, and some repairs on TOTEM T2 and CASTOR. The most significant tasks were, however, concentrated on the supporting infrastructure. A detailed line-by-line leak search was performed in the C6F14 cooling system of the Tracker, followed by the installation of variable-frequency drives on the pump motors of the SS1 and SS2 tracker cooling plants to reduce pressure transients during start-up. In the electrical system, larger harmonic filters were installed in ...

  17. Characterizing commercial pureed foods: sensory, nutritional, and textural analysis.

    Science.gov (United States)

    Ettinger, Laurel; Keller, Heather H; Duizer, Lisa M

    2014-01-01

    Dysphagia (swallowing impairment) is a common consequence of stroke and degenerative diseases such as Parkinson's and Alzheimer's. Limited research is available on pureed foods, specifically the qualities of commercial products. Because research has linked pureed foods, specifically in-house pureed products, to malnutrition due to inferior sensory and nutritional qualities, commercial purees also need to be investigated. Proprietary research on sensory attributes of commercial foods is available; however direct comparisons of commercial pureed foods have never been reported. Descriptive sensory analysis as well as nutritional and texture analysis of commercially pureed prepared products was performed using a trained descriptive analysis panel. The pureed foods tested included four brands of carrots, of turkey, and two of bread. Each commercial puree was analyzed for fat (Soxhlet), protein (Dumas), carbohydrate (proximate analysis), fiber (total fiber), and sodium content (Quantab titrator strips). The purees were also texturally compared with a line spread test and a back extrusion test. Differences were found in the purees for sensory attributes as well as nutritional and textural properties. Findings suggest that implementation of standards is required to reduce variability between products, specifically regarding the textural components of the products. This would ensure all commercial products available in Canada meet standards established as being considered safe for swallowing.

  18. Pure transperitoneal laparoscopic correction of retrocaval ureter

    Institute of Scientific and Technical Information of China (English)

    DING Guo-qing; XU Li-wei; LI Xin-de; LI Gong-hui; YU Yan-lan; YU Da-min; ZHANG Zhi-gen

    2012-01-01

    Background Retrocaval ureter is a rare congenital abnormality.Operative repair is always suggested in cases of significant functional obstruction.Laparoscopic procedures have been employed as the minimally invasive therapeutic option for retrocaval ureter.However,the laparoscopic techniques for retrocaval ureter might be technically challenging to some surgeons.The aim of this article was to present our experience and surgical techniques of pure transperitoneal laparoscopic pyelopyelostomy and ureteroureterostomy in nine patients with retrocaval ureter.Methods A total of nine patients of retrocaval ureter underwent pure laparoscopic pyelopyelostomy or ureteroureterostomy.The operation was performed with the patients placed in the 70-degree lateral decubitus position via a three port transperitoneal approach with two 10-mm and one 5-mm ports.The distal part of the dilated renal pelvis was transected at the ureteropelvic junction and the ureter was relocated anterior to the inferior vena cava.The tension-free pyeloureteral or ureteroureteral anastomosis was completed with the intracorporal freehand suturing and in situ knot-tying techniques combined with interrupted and continuous fashion.A double J ureteral stent was inserted in an antegrade manner during laparoscopy.Intravenous urography or computerized tomography and renal ultrasonography were performed after 3 months postoperatively.Results All operations were completed laparoscopically,and no open conversion was required.The mean operative time was 135 minutes (range,70-250 minutes),with minimal blood loss (less than 60 ml).No intra-operative complications or significant bleeding occurred.All patients presented mild postoperative pain and quick convalescence.The symptoms disappeared and hydronephrosis decreased substantially after surgery.Conclusions Pure transperitoneal laparoscopic correction for retrocaval ureter was associated with an excellent outcome,minimal invasiveness and short hospital stay.It is

  19. Visual processing in pure alexia

    DEFF Research Database (Denmark)

    Starrfelt, Randi; Habekost, Thomas; Gerlach, Christian

    2010-01-01

    Whether pure alexia is a selective disorder that affects reading only, or if it reflects a more general visual disturbance, is highly debated. We have investigated the selectivity of visual deficits in a pure alexic patient (NN) using a combination of psychophysical measures, mathematical modelling...

  20. TECHNICAL COORDINATION

    CERN Multimedia

    A. Ball and W. Zeuner

    2010-01-01

    Overview Once again, the bulk of this article reviews the intense activity of a recently completed shutdown, which, although quite unforeseeable until a few weeks before it started, proved by its success that our often advertised capability to conduct major maintenance within a two month period is real. Although safely completed, on-time to remarkable precision, the activity was not without incident, and highlighted our dependence on many experienced, specialist teams and their precise choreography. Even after the yoke was safely closed, magnet re-commissioning and beampipe pumpdown showed new and thought-provoking behaviour. The struggle to maintain adequate technical resources will be a pre-occupation over the coming months, in parallel with the start of truly sustained operation, for which various procedures are still being put in place. Planning for future shutdowns must now become a high priority, with many working groups and task forces already in existence to prepare infrastructure improvements and to...

  1. TECHNICAL COORDINATION

    CERN Multimedia

    A. Ball and W. Zeuner

    2013-01-01

    For the reporting period, the CMS common systems and infrastructure worked well, without failures that caused significant data losses. One more disconnection of the magnet cold box occurred in the shadow of interruptions in data taking, caused by a series of technical faults. The recognition during 2012 that re-connection can only safely be done at around 2 T implies a minimum magnet recovery time of 12 hours and raises serious concerns about the number of ramping cycles of the magnet these incidents cause. This has triggered studies of how to make the cryo-system of the magnet more robust against failures. The proton-proton run ended just before the end-of-year CERN closure, during which CASTOR was installed on the negative end of CMS and both ZDC calorimeters were installed in TAN absorbers the LHC tunnel, in preparation for the heavy-ion run. The installation of CASTOR was an excellent “engineering test” of procedures for working in an activated environment. Despite some technical pr...

  2. 生物酶法合成(S)-2-氨基-1-丁醇的研究%Enzymatic preparation of optically pure (S)-2-amino-1-butanol

    Institute of Scientific and Technical Information of China (English)

    程仕伟; 魏东芝; 孙爱友

    2011-01-01

    With the source of Alcaligenes faecoiis penicillin C acylase as catalyst, optically pure (S) -2-amino-1-butanol is obtained via enantioselective hydrolysis of N-phenylacetyl racemic 2-amino-1-butanol. The optimal conditions of catalytic process are as follows: 2 U/mL of enzyme, 100 mmoVL of substrate concentration, 40℃ of reaction temperature,9. 0 of pH. Under the optimal conditions,the higher optical punty ( ee > 99% ) can be obtained when the racemic substrate conversion rate of 40% is achieved.%以粪产碱杆菌来源的青霉素G酰化酶为催化剂,酶法拆分苯乙酰消旋底物转化生成(S)-2-氨基-1-丁醇.通过对催化过程中加酶量、底物浓度、反应温度、pH进行优化,确定最适酶催化条件是pH 9.0,40℃,底物浓度100 mmol/L,酶量2 U/mL,反应体积80 mL.在最适反应条件下,当消旋底物转化率达40%时终止反应可获得较高的产物光学纯度(ee>99%).

  3. DEVELOPMENT OF VEGETABLE PUREES AND DRINKS BY LACTIC ACID FERMENTATION

    Directory of Open Access Journals (Sweden)

    At. Kraevska

    2014-03-01

    Full Text Available The object of this work was to investigate the possibility for development of vegetable purees and drinks by lactic acid fermentation. It was found that by the direct lactic acid fermentation of Lb.plantarum strain 226/1 the vitamin composition of vegetable purees is preserved and the biological value is increased. Drinks, prepared from fermented vegetable purees were remarkable with the pleasant lactic acid taste, the sucrose-acid composition was stable and balanced and they can be used both in the rational and in the dietary nutrition.

  4. International Scientific and Technical Organisations; Organismos Cientifico-Tecnicos Internacionales

    Energy Technology Data Exchange (ETDEWEB)

    Nunez-Lagos Rogla, R. [Universidad de Zaragoza (Spain)

    2003-07-01

    The nuclear scientific and technical world is well aware of the EURATOM and IAEA activities but usually other international scientific and technical organisations relevant for their ordinary work are unknown. In this article three international organisations are described briefly, the International Union of Pure and Applied Physics (IUPAP). International Union of Pure and Applied chemistry (IUPAC) and the international council of Science (ICSU). (Author)

  5. Vocational-Technical Education in Massachusetts. Preparing for the 21st Century. A Strategies Conference (Milford, Massachusetts, October 23-24, 1986). Executive Summary.

    Science.gov (United States)

    Massachusetts Univ., Amherst. Inst. for Governmental Services.

    This executive summary provides an overview of activities and a listing of the recommendations and strategies developed by participants at a conference on vocational/technical education. These four major themes are highlighted: the need to improve the image of vocational education through better communication with the public and special interest…

  6. EFSA NDA Panel (EFSA Panel on Dietetic Products, Nutrition and Allergies), 2013. Scientific and technical guidance for the preparation and presentation of applications pursuant to Article 6 Paragraph 11 of Directive 2000/13/EC, as amended

    DEFF Research Database (Denmark)

    Tetens, Inge

    Following a request from the European Commission, the Panel on Dietetic Products, Nutrition and Allergies (NDA) was asked to deliver a scientific opinion on Scientific and technical guidance for the preparation and presentation of applications pursuant to Article 6 Paragraph 11 of Directive 2000....... It presents a common format for the organisation of the information to be provided and outlines the information and scientific data which must be included in the application, the hierarchy of different types of data and study designs, reflecting the relative strength of evidence which may be obtained from...

  7. Relativity of pure states entanglement

    CERN Document Server

    Zyczkowski, K; Zyczkowski, Karol; Bengtsson, Ingemar

    2002-01-01

    Entanglement of any pure state of an N times N bi-partite quantum system may be characterized by the vector of coefficients arising by its Schmidt decomposition. We analyze various measures of entanglement derived from the generalized entropies of the vector of Schmidt coefficients. For N >= 3 they generate different ordering in the set of pure states and for some states their ordering depends on the measure of entanglement used. This odd-looking property is acceptable, since these incomparable states cannot be transformed to each other with unit efficiency by any local operation. In analogy to special relativity the set of pure states equivalent under local unitaries has a causal structure so that at each point the set splits into three parts: the 'Future', the 'Past' and the set of noncomparable states.

  8. "Pure" cutaneous histiocytosis-X.

    Science.gov (United States)

    Wolfson, S L; Botero, F; Hurwitz, S; Pearson, H A

    1981-11-15

    The case histories of two young children who experienced skin rashes involving various areas of the body are reported. The diagnosis of pure cutaneous histiocytosis-X was established after extensive studies revealed no other organ involvement. The patients were treated with oral corticosteroids. Currently, both children are in good health, show no evidence of disease, and have been followed over a four-to-five-year period. Therapy with corticosteroids may not be indicated with pure cutaneous histiocytosis-X unless there is evidence of extracutaneous dissemination or rapid progression of the disease.

  9. Pure Spinors for General Backgrounds

    CERN Document Server

    Fre', Pietro

    2008-01-01

    We show the equivalence of the different types of pure spinor constraints geometrically derived from the Free Differential Algebras of N=2 d=10 supergravities. Firstly, we compute the general solutions of these constraints, using both a G_2 and an SO(8) covariant decomposition of the 10d chiral spinors. Secondly, we verify that the number of independent degrees of freedom is equal to that implied by the Poincare' pure spinor constraints so-far used for superstrings, namely twenty two. Thirdly, we show the equivalence between the FDA type IIA/B constraints among each other and with the Poincare' ones.

  10. Production of fermented chestnut purees by lactic acid bacteria.

    Science.gov (United States)

    Blaiotta, G; Di Capua, M; Coppola, R; Aponte, M

    2012-09-03

    The objective of this study was to develop a new chestnut-based puree, in order to seasonally adjust the offer and use the surplus of undersized production, providing, at the same time, a response to the growing demand for healthy and environmentally friendly products. Broken dried chestnuts have been employed to prepare purees to be fermented with six different strains of Lactobacillus (Lb.) rhamnosus and Lactobacillus casei. The fermented purees were characterized by a technological and sensorial point of view, while the employed strains were tested for their probiotic potential. Conventional in vitro tests have indicated the six lactobacilli strains as promising probiotic candidates; moreover, being the strains able to grow and to survive in chestnut puree at a population level higher than 8 log₁₀ CFU/mL along 40 days of storage at 4 °C, the bases for the production of a new food, lactose-free and with reduced fat content, have been laid.

  11. Pure robotic retrocaval ureter repair

    Directory of Open Access Journals (Sweden)

    Ashok k. Hemal

    2008-12-01

    Full Text Available PURPOSE: To demonstrate the feasibility of pure robotic retrocaval ureter repair. MATERIALS AND METHODS: A 33 year old female presented with right loin pain and obstruction on intravenous urography with the classical "fish-hook" appearance. She was counseled on the various methods of repair and elected to have a robot assisted repair. The following steps are performed during a pure robotic retrocaval ureter repair. The patient is placed in a modified flank position, pneumoperitoneum created and ports inserted. The colon is mobilized to expose the retroperitoneal structures: inferior vena cava, right gonadal vein, right ureter, and duodenum. The renal pelvis and ureter are mobilized and the renal pelvis transected. The ureter is transposed anterior to the inferior vena cava and a pyelopyelostomy is performed over a JJ stent. RESULTS: This patient was discharged on postoperative day 3. The catheter and drain tube were removed on day 1. Her JJ stent was removed at 6 weeks postoperatively. The postoperative intravenous urography at 3 months confirmed normal drainage of contrast medium. CONCLUSION: Pure robotic retrocaval ureter is a feasible procedure; however, there does not appear to be any great advantage over pure laparoscopy, apart from the ergonomic ease for the surgeon as well the simpler intracorporeal suturing.

  12. TECHNICAL COORDINATION

    CERN Multimedia

    Austin Ball

    2013-01-01

      Since the last report, much visible progress has been made, as the LS1 programme approaches the halfway point. From early October, technical and safety shift-crew have been present around the clock, allowing detectors to stay switched on overnight, ensuring that safety systems are operational and instructions for non-expert shift-crew are clear. LS1 progress Throughout the summer, whilst the solenoid vacuum tank and YB0 surfaces were accessible, an extensive installation programme took place to prepare for Tracker colder operation and the PLT installation, in 2014, the Phase 1 Pixel Tracker installation, in 2016–’17, and the HCAL Phase 1 upgrade completion, ending in LS2. This included pipework for N2 or dry air to flush the Tracker bulkhead region, many sensors to monitor temperature and dew point in the Tracker and its service channels, heating wires outside the Tracker cooling bundles, supports for the new vacuum-jacketed, concentric, CO2 Pixel cooling lines, the PLT cool...

  13. Technical report writing today

    CERN Document Server

    Riordan, Daniel G

    2014-01-01

    "Technical Report Writing Today" provides thorough coverage of technical writing basics, techniques, and applications. Through a practical focus with varied examples and exercises, students internalize the skills necessary to produce clear and effective documents and reports. Project worksheets help students organize their thoughts and prepare for assignments, and focus boxes highlight key information and recent developments in technical communication. Extensive individual and collaborative exercises expose students to different kinds of technical writing problems and solutions. Annotated student examples - more than 100 in all - illustrate different writing styles and approaches to problems. Numerous short and long examples throughout the text demonstrate solutions for handling writing assignments in current career situations. The four-color artwork in the chapter on creating visuals keeps pace with contemporary workplace capabilities. The Tenth Edition offers the latest information on using electronic resum...

  14. Rare earths: preparation of spectro chemically pure standards, study of their carbonates and synthesis of a new compound series - the peroxy carbonates; Terras-raras: obtencao de padroes espectroquimicos, estudo dos carbonatos e sintese dos peroxicarbonatos. Uma nova serie de compostos

    Energy Technology Data Exchange (ETDEWEB)

    Queiroz, Carlos Alberto da Silva

    1996-05-01

    In this work the following studies are concerned: I) preparation of lanthanum, cerium, praseodymium, neodymium and samarium oxides for use as spectro chemically pure standards; II) behavior of the rare earth (La, Ce, Pr, Nd, Sm) carbonates soluble in ammonium carbonate and mixture of ammonium carbonate/ammonium hydroxide, and III) synthesis and characterization of rare earth peroxy carbonates - a new series of compounds. Data for the synthesis and characterization of the rare earths peroxy carbonates described for the first time in this work are presented and discussed. With the aid of thermal analysis (TG-DTG) the thermal stability and the stoichiometric composition for new compounds were established and a mechanism of thermal decomposition was proposed. The peroxy carbonate was prepared by the addition of hydrogen peroxyde to the complexed soluble rare earths carbonates. These studies included also the determinations of active oxygen, the total rare earth oxide by gravimetry and complexometry and the C, H and N contents by microanalysis. The new compounds were also investigated by infrared spectroscopy. (author)

  15. Analysis of Software Design Artifacts for Socio-Technical Aspects

    OpenAIRE

    Damaševičius, Robertas; Kaunas University of Technology

    2007-01-01

    Software systems are not purely technical objects. They are designed, constructed and used by people. Therefore, software design process is not purely a technical task, but a socio-technical process embedded within organizational and social structures. These social structures influence and govern their work behavior and final work products such as program source code and documentation. This paper discusses the organizational, social and psychological aspects of software design; and formulates...

  16. Using High-Technology Simulators to Prepare Anesthesia Providers Before Implementation of a New Electronic Health Record Module: A Technical Report.

    Science.gov (United States)

    Weintraub, Ari Y; Deutsch, Ellen S; Hales, Roberta L; Buchanan, Newton A; Rock, Whitney L; Rehman, Mohamed A

    2017-06-01

    Learning to use a new electronic anesthesia information management system can be challenging. Documenting anesthetic events, medication administration, and airway management in an unfamiliar system while simultaneously caring for a patient with the vigilance required for safe anesthesia can be distracting and risky. This technical report describes a vendor-agnostic approach to training using a high-technology manikin in a simulated clinical scenario. Training was feasible and valued by participants but required a combination of electronic and manual components. Further exploration may reveal simulated patient care training that provides the greatest benefit to participants as well as feedback to inform electronic health record improvements.

  17. Thesis Preparation Manual

    OpenAIRE

    1999-01-01

    "This Thesis Preparation Manual has been written to provide you with format and procedure guidance for preparing and processing your thesis at the Naval Postgraduate School. It covers both unclassified and classified theses. All theses and thesis technical reports must be prepared in accordance with these guidelines. Please note that this manual is not written in the thesis format." form the Foreword

  18. Manifolds of interconvertible pure states

    OpenAIRE

    Sinolecka, Magdalena M.; Zyczkowski, Karol; Kus, Marek

    2001-01-01

    Local orbits of a pure state of an N x N bi-partite quantum system are analyzed. We compute their dimensions which depends on the degeneracy of the vector of coefficients arising by the Schmidt decomposition. In particular, the generic orbit has 2N^2 -N-1 dimensions, the set of separable states is 4(N-1) dimensional, while the manifold of maximally entangled states has N^2-1 dimensions.

  19. Manifolds of interconvertible pure states

    CERN Document Server

    Sinolecka, M M; Kus, M; Sinolecka, Magdalena M.; Zyczkowski, Karol; Kus, Marek

    2002-01-01

    Local orbits of a pure state of an N x N bi-partite quantum system are analyzed. We compute their dimensions which depends on the degeneracy of the vector of coefficients arising by the Schmidt decomposition. In particular, the generic orbit has 2N^2 -N-1 dimensions, the set of separable states is 4(N-1) dimensional, while the manifold of maximally entangled states has N^2-1 dimensions.

  20. Multimedia programming with pure data

    CERN Document Server

    Chung, Bryan

    2013-01-01

    A quick and comprehensive tutorial book for media designers to jump-start interactive multimedia production with computer graphics, digital audio, digital video, and interactivity, using the Pure Data graphical programming environment.An introductory book on multimedia programming for media artists/designers who like to work on interactivity in their projects, digital art/design students who like to learn the first multimedia programming technique, and audio-visual performers who like to customize their performance sets

  1. Rheology of coal-water slurries prepared by the HP roll mill grinding of coal. Quarterly technical progress report number 11, March 1--May 31, 1995

    Energy Technology Data Exchange (ETDEWEB)

    Fuerstenau, D.W.

    1995-06-01

    The objective of this research is the development of improved technology for the preparation of coal-water slurries that have potential for replacing fuel oil in direct combustion. Detailed investigations of the effect of solids content and chemical additives on the rheology of coal-water slurries, prepared with fines produced by the ball milling of Pittsburgh No. 8 coal, were conducted during the first phase of the research program. These experiments were to provide a baseline against which the rheological behavior of slurries prepared with fines produced by high-pressure roll milling or hybrid high-pressure, roll mill/ball mill grinding could be compared. The viscosity of slurries with high solids content is strongly influenced by the packing density of the feed material. The packing density can be significantly altered by mixing distributions of different median sizes, and to an extent by modifying the grinding environment. The research during this quarter was, therefore, directed towards: (1) establishing the relationship between the packing characteristic of fines and the viscosity of slurries prepared with the fines; (2) investigation of the effect of mixing distribution on the rheology; and (3) study of the effect of grinding environment in the ball mill on the rheology of coal-water slurries.

  2. Economic and Technical Comparison of Three Typical Coal Gasification Technologies for Hydrogen Preparation%3种典型煤气化技术制备氢气经济技术比较

    Institute of Scientific and Technical Information of China (English)

    潘华; 王乔炜

    2016-01-01

    According to coal quality analyzing data, this paper selects three suitable coal gasification technologies to conduct a comprehensive analysis and comparison of the technical characteristics, processing parameters, consumption indexes and techno-economics of three coal gasification technologies for hydrogen preparation, the results of which show that the crushed coal’s pressurized gasification technology for hydrogen preparation is the most competitive technology among the three coal gasification technologies for hydrogen preparation.%根据煤质分析数据,选择适宜的3种典型气化技术,对3种气化方式制氢的技术特点、工艺参数和消耗指标以及技术经济性进行全面的分析比较,结果显示碎煤加压气化制备氢气是3种煤制氢技术中最具有竞争力的技术。

  3. Isolation of pure enantiomers of Toxaphene congeners via hydrochlorination and chlorination of Pinene and composition of Soviet polychloropinene

    Energy Technology Data Exchange (ETDEWEB)

    Nikiforov, V.; Trukhin, A.; Kruchkov, F.; Kiprianova, A.; Miltsov, S. [Sankt-Peterburgskij Univ. (Russian Federation). Dept. of Chemistry; Kallenborn, R. [NILU, Kjeller (Norway)

    2004-09-15

    Toxaphene is an insecticidal mixture, produced by the controlled photochlorination of camphene1. In the USSR similar insecticide - Polychloropinene was produced by chlorination of {alpha}-pinene with AIBN (azobisisobutyronitrile) as initiator. Natural camphene occurs in different essential oils in (+)-form as well as (-)-form. Production of artificial camphene starts from natural {alpha}-pinene, which is also chiral. All noted types of camphene are used for toxaphene synthesis by different manufacturers. Some congeners in selected samples of technical Toxaphene were shown to have small deviations from racemic distribution. Nevertheless, there is no information about any enantiomerically pure congeners of toxaphene. The amount of Polychloropinene produced in the USSR is estimated to be 160 thousand tons, which is a significant contribution into the total global production. Unfortunately, there is no traceable sample of Soviet Polychloropinene available. In the present work we report on the preparation of artificial model Polychloropinene mixtures with different content of chlorine in an attempt to find the difference between Toxaphene and Soviet Polychloropinene. Another goal of our research project is to prepare pure enantiomers of important Toxaphene congeners, to establish their configuration and thus to provide more opportunities to enantiomerspecific environmental analysis of Toxaphene residues.

  4. Universality in pure gravity mediation

    Energy Technology Data Exchange (ETDEWEB)

    Evans, Jason L.; Olive, Keith A. [University of Minnesota, William I. Fine Theoretical Physics Institute, School of Physics and Astronomy, Minneapolis, MN (United States); Ibe, Masahiro [University of Tokyo, ICRR, Kashiwa (Japan); University of Tokyo, Kavli IPMU, TODIAS, Kashiwa (Japan); Yanagida, Tsutomu T. [University of Tokyo, Kavli IPMU, TODIAS, Kashiwa (Japan)

    2013-07-15

    If low-energy supersymmetry is realized in nature, the apparent discovery of a Higgs boson with mass around 125 GeV suggests a supersymmetric mass spectrum in the TeV or multi-TeV range. Multi-TeV scalar masses are a necessary component of supersymmetric models with pure gravity mediation or in any model with strong moduli stabilization. Here, we show that full scalar mass universality remains viable as long as the ratio of Higgs vevs, tan{beta}, is relatively small (

  5. Toxicological evaluation of pure hydroxytyrosol.

    Science.gov (United States)

    Auñon-Calles, David; Canut, Lourdes; Visioli, Francesco

    2013-05-01

    Of all the phenolic constituents of olives and extra virgin olive oil, hydroxytyrosol is currently being actively exploited as a potential supplement or preservative to be employed in the nutraceutical, cosmeceutical, and food industry. In terms of safety profile, hydroxytyrosol has only been investigated as the predominant part of raw olive mill waste water extracts, due to the previous unavailability of appropriate quantities of the pure compound. We report the toxicological evaluation of hydroxytyrosol and, based on the results, propose a No Observed Adverse Effects Level (NOAEL) of 500mg/kg/d.

  6. Synthesis of Enantiomerically Pure Anthracyclinones

    Science.gov (United States)

    Achmatowicz, Osman; Szechner, Barbara

    The anthracycline antibiotics are among the most important clinical drugs used in the treatment of human cancer. The search for new agents with improved therapeutic efficacy and reduced cardiotoxicity stimulated considerable efforts in the synthesis of new analogues. Since the biological activity of anthracyclines depends on their natural absolute configuration, various strategies for the synthesis of enantiomerically pure anthracyclinones (aglycones) have been developed. They comprise: resolution of racemic intermediate, incorporation of a chiral fragment derived from natural and non-natural chiral pools, asymmetric synthesis with the use of a chiral auxiliary or a chiral reagent, and enantioselective catalysis. Synthetic advances towards enantiopure anthracyclinones reported over the last 17 years are reviewed.

  7. Pure dysarthria due to an insular infarction.

    Science.gov (United States)

    Hiraga, Akiyuki; Tanaka, Saiko; Kamitsukasa, Ikuo

    2010-06-01

    Cortical infarction presenting with pure dysarthria is rarely reported. Previous studies have reported pure dysarthria due to cortical stroke at the precentral gyrus or middle frontal gyrus. We report a 72-year-old man who developed pure dysarthria caused by an acute cortical infarction in the insular cortex. The role of the insula in language has been difficult to assess clinically because of the rarity of pure insular strokes. Our patient showed pure dysarthria without aphasia, indicating that pure dysarthria can be the sole manifestation of insular infarctions.

  8. An enantioselective synthesis of optically pure azaferrocenyl anions - First general and practical approach to chiral azaferrocenes

    DEFF Research Database (Denmark)

    Seitzberg, Jimmi Gerner; Søtofte, Inger; Johannsen, Mogens

    2001-01-01

    Herein we report a very simple route that allows the construction of a variety of optically pure azaferrocenyl compounds. The key feature is the preparation of optically pure 2-azaferrocenyl anions, which can serve as precursors for the construction of novel chiral azaferrocenyl complexes....

  9. A Simplified Method for Preparation of Technical Grade Silica from Asbestos Tailings%石棉尾矿简法制备工业级白炭黑的工艺研究

    Institute of Scientific and Technical Information of China (English)

    惠贺龙; 王志国; 龙小玲; 张雪青

    2009-01-01

    According to the especial character of the asbestos tailings with high iron content from Shimian county Sichuansichuan province, the two-step acid-leaching and magnetization technology was adopted. Under a mild reaction condition the technical grade silica was prepared from asbestos tailings, which could meet the quality index of criter A in HG/T 3061-1999, the total content of amorphous silica was above 95.8%, and the specific surface area was 233m~2/g, the average aperture was 1~10μm, the DPB adsorption value was 2.42mL/g. The process flow was simplified and easy to operate, which was a feasible process for preparation of technical grade silica from the asbestos railings with high iron content.%研究针对四川石棉县石棉尾矿高铁性质,采用二步酸浸、磁化除铁工艺,在较温和的反应条件下制备得满足HG/T3061-1999中A类标准要求的工业级白炭黑:SiO_2>95.8%,比表面积为233m~2/g,平均孔径1~10μm,DPB吸油值为2.42mL/g.工艺流程设计简洁,操作便宜,为以高铁石棉尾矿为原料制备白炭黑提供切实可行的工艺.

  10. 15 CFR 1180.4 - Preparing a product for transfer.

    Science.gov (United States)

    2010-01-01

    ... (Continued) TECHNOLOGY ADMINISTRATION, DEPARTMENT OF COMMERCE TRANSFER BY FEDERAL AGENCIES OF SCIENTIFIC, TECHNICAL AND ENGINEERING INFORMATION TO THE NATIONAL TECHNICAL INFORMATION SERVICE § 1180.4 Preparing...

  11. Building technical services - Compact equipment for heating, hot water preparation, ventilation and cooling - Appendix; Haustechnik - Kompaktgeraete (Heizen, Warmwasser, Lueften, Kuehlen - alles aus einem). Erkenntnisse aus der Praxis - Anhang

    Energy Technology Data Exchange (ETDEWEB)

    Haessig, W.; Streit, S. [Haessig Sustech GmbH, Uster (Switzerland); Helfenfinger, D.; Keller, P. [Hochschule fuer Technik und Architektur Luzern (HSLU), Luzern (Switzerland)

    2009-06-15

    This comprehensive appendix to the final report for the Swiss Federal Office of Energy (SFOE) on compact equipment for heating, hot water preparation, ventilation and cooling presents detailed data on energy costs of the various apartments studied, as well as graphical representations of room temperatures and comfort, domestic hot water consumption, outdoor ambient temperatures and their influence on indoor temperatures for both summer and winter periods. System efficiency calculations and the methodologies used are described. Plans of the apartments that were examined complete this appendix.

  12. On Absence of Pure Singular Spectrum of Random Perturbations and in Anderson Model at Low Disorde

    CERN Document Server

    Grinshpun, V

    2006-01-01

    Absence of singular component, with probability one, in the conductivity spectra of bounded random perturbations of multidimensional finite-difference Hamiltonians, is for the first time rigorously established under certain conditions ensuring either absence of pure point, or absence of pure absolutely continuous component in the corresponding regions of spectra. The main technical tool applied is the theory of rank-one perturbations of singular spectra. The respective new result (the non-mixing property) is applied to establish existence and bounds of the (non-empty) pure absolutely continuous component in the spectrum of the Anderson model with bounded random potential in dimension 2 at low disorder. The new (1999) result implies, via the trace-class perturbation analysis, the Anderson model with the unbounded potential to have only pure point spectrum (complete system of localized wave-functions) with probability one in arbitrary dimension. The new technics, based on the resolvent reduction formula, and ex...

  13. ABSOLUTELY E-PURE MODULES AND E-PURE SPLIT MODULES

    Institute of Scientific and Technical Information of China (English)

    Yan Hangyu

    2011-01-01

    We first introduce the concepts of absolutely E-pure modules and Epure split modules. Then, we characterize the IF rings in terms of absolutely E-pure modules. The E-pure split modules are also characterized.

  14. Synthesis and Antioxidant Evaluation of Enantiomerically Pure Bis-(1,2,3-triazolylmethyl)amino Esters from Modified α-Amino Acids

    Science.gov (United States)

    Sarmiento-Sánchez, Juan I.; Ochoa-Terán, Adrián; Rivero, Ignacio A.

    2014-01-01

    The efforts for synthesis of enantiomerically pure bis-(1,2,3-triazolylmethyl)amino esters 6 are reported in good yields from an in situ generated α-azidomethyl ketone. Optimum experimental conditions were established for preparation of α-halomethyl ketones 10 and α-N,N-dipropargylamino esters 11, all derived from α-amino acids. The starting materials reacted under conventional click chemistry conditions, revealing a specific reactivity of bromomethyl ketones over chloromethyl ketones. The antioxidant activity of compounds 6 was assayed by DPPH method. The compound 6c with an IC50 of 75.57 ± 1.74 μg mL−1 was the most active. Technically, this methodology allows the preparation of a combinatorial library of analogues with different structural characteristics depending on the nature of the modified α-amino acids employed in the synthesis. PMID:25386592

  15. Technical Network

    CERN Multimedia

    2007-01-01

    In order to optimize the management of the Technical Network (TN), to ease the understanding and purpose of devices connected to the TN, and to improve security incident handling, the Technical Network Administrators and the CNIC WG have asked IT/CS to verify the "description" and "tag" fields of devices connected to the TN. Therefore, persons responsible for systems connected to the TN will receive email notifications from IT/CS asking them to add the corresponding information in the network database. Thank you very much for your cooperation. The Technical Network Administrators & the CNIC WG

  16. Technical Network

    CERN Multimedia

    2007-01-01

    In order to optimise the management of the Technical Network (TN), to facilitate understanding of the purpose of devices connected to the TN and to improve security incident handling, the Technical Network Administrators and the CNIC WG have asked IT/CS to verify the "description" and "tag" fields of devices connected to the TN. Therefore, persons responsible for systems connected to the TN will receive e-mails from IT/CS asking them to add the corresponding information in the network database at "network-cern-ch". Thank you very much for your cooperation. The Technical Network Administrators & the CNIC WG

  17. Pure optical dynamical color encryption

    Science.gov (United States)

    Mosso, Fabian; Tebaldi, Myrian; Fredy Barrera, John; Bolognini, Néstor; Torroba, Roberto

    2011-07-01

    We introduce a way to encrypt-decrypt a color dynamical phenomenon using a pure optical alternative. We split the three basic chromatic channels composing the input, and then each channel is processed through a 4f encoding method and a theta modulation applied to the each encrypted frame in every channel. All frames for a single channel are multiplexed. The same phase mask is used to encode all the information. Unlike the usual procedure we do not multiplex the three chromatic channels into a single encoding media, because we want to decrypt the information in real time. Then, we send to the decoding station the phase mask and the three packages each one containing the multiplexing of a single channel. The end user synchronizes and decodes the information contained in the separate channels. Finally, the decoding information is conveyed together to bring the decoded dynamical color phenomenon in real-time. We present material that supports our concepts.

  18. 76 FR 69284 - Pure Magnesium From China

    Science.gov (United States)

    2011-11-08

    ... COMMISSION Pure Magnesium From China Determination On the basis of the record \\1\\ developed in the subject... order on pure magnesium from China would be likely to lead to continuation or recurrence of material... USITC Publication 4274 (October 2011), entitled Pure Magnesium from China: Investigation No....

  19. Percutaneous vertebroplasty: technical considerations

    Institute of Scientific and Technical Information of China (English)

    Gao-jun TENG; Shi-cheng HE

    2005-01-01

    Percutaneous vertebroplasty (PVP) is a relative new interventional technique, which is widely used in treatment of vertebral collapse caused by vertebral neoplasms and osteoporotic compression fractures. The general technical considerations of PVP techniques are discussed based on authors' experience obtained over 400 patients in the past years in this article, including preparation of PMMA, instrument of PVP, guidance and puncture approaches, and technique of the procedure, etc. The conclusion is that PVP is a safe procedure if the physicians handle it properly.

  20. Solution preparation

    Energy Technology Data Exchange (ETDEWEB)

    Seitz, M.G.

    1982-01-01

    Reviewed in this statement are methods of preparing solutions to be used in laboratory experiments to examine technical issues related to the safe disposal of nuclear waste from power generation. Each approach currently used to prepare solutions has advantages and any one approach may be preferred over the others in particular situations, depending upon the goals of the experimental program. These advantages are highlighted herein for three approaches to solution preparation that are currently used most in studies of nuclear waste disposal. Discussion of the disadvantages of each approach is presented to help a user select a preparation method for his particular studies. Also presented in this statement are general observations regarding solution preparation. These observations are used as examples of the types of concerns that need to be addressed regarding solution preparation. As shown by these examples, prior to experimentation or chemical analyses, laboratory techniques based on scientific knowledge of solutions can be applied to solutions, often resulting in great improvement in the usefulness of results.

  1. Application of Super Absorbent Polymers (SAP) in Concrete Construction State-of-the-Art Report Prepared by Technical Committee 225-SAP

    CERN Document Server

    Reinhardt, Hans-Wolf

    2012-01-01

    This is the state-of-the-art report prepared by the RILEM TC “Application of Super Absorbent Polymers (SAP) in concrete construction”. It gives a comprehensive overview of the properties of SAP, specific water absorption and desorption behaviour of SAP in fresh and hardening concrete, effects of the SAP addition on rheological properties of fresh concrete, changes of cement paste microstructure and mechanical properties of concrete. Furthermore, the key advantages of using SAP are described in detail: the ability of this material to act as an internal curing agent to mitigate autogenous shrinkage of high-performance concrete, the possibility to use SAP as an alternative to air-entrainment agents in order to increase the frost resistance of concrete, and finally, the benefit of steering the rheology of fresh cement-based materials. The final chapter describes the first existing and numerous prospective applications for this new concrete additive.

  2. Biomedical effects of mushrooms with emphasis on pure compounds

    Directory of Open Access Journals (Sweden)

    R. Russell M Paterson

    2014-12-01

    Full Text Available Medicinal mushrooms show great promise for disease treatments. They have been employed in the Orient and Occident for thousands of years, although the practice has persisted in the East. They remain highly valuable. Authentic human trials and pure compounds are emphasized in this review of the most current literature. Polysaccharides from the fungi appear effective in cancer treatments and low-molecular-weight compounds also attract much interest. However, reports of toxicity must be taken seriously. Prescriptions for mushrooms and preparations need to be given by qualified medical practitioners. The reason why these preparations are not more widely used in the West is related to problems of (A intellectual property rights, (B mass production, and (C obtaining pure compounds that retain activity. Mushroom compounds require testing against infectious diseases such as those caused by bacteria, because the current antibiotics are failing from resistances. Overall, the future is assured for medicinal mushrooms.

  3. Biomedical effects of mushrooms with emphasis on pure compounds.

    Science.gov (United States)

    Paterson, R Russell M; Lima, Nelson

    2014-01-01

    Medicinal mushrooms show great promise for disease treatments. They have been employed in the Orient and Occident for thousands of years, although the practice has persisted in the East. They remain highly valuable. Authentic human trials and pure compounds are emphasized in this review of the most current literature. Polysaccharides from the fungi appear effective in cancer treatments and low-molecular-weight compounds also attract much interest. However, reports of toxicity must be taken seriously. Prescriptions for mushrooms and preparations need to be given by qualified medical practitioners. The reason why these preparations are not more widely used in the West is related to problems of (A) intellectual property rights, (B) mass production, and (C) obtaining pure compounds that retain activity. Mushroom compounds require testing against infectious diseases such as those caused by bacteria, because the current antibiotics are failing from resistances. Overall, the future is assured for medicinal mushrooms.

  4. Dual Target Search is Neither Purely Simultaneous nor Purely Successive.

    Science.gov (United States)

    Cave, Kyle R; Menneer, Tamaryn; Nomani, Mohammad S; Stroud, Michael J; Donnelly, Nick

    2017-08-31

    Previous research shows that visual search for two different targets is less efficient than search for a single target. Stroud, Menneer, Cave and Donnelly (2012) concluded that two target colours are represented separately based on modeling the fixation patterns. Although those analyses provide evidence for two separate target representations, they do not show whether participants search simultaneously for both targets, or first search for one target and then the other. Some studies suggest that multiple target representations are simultaneously active, while others indicate that search can be voluntarily simultaneous, or switching, or a mixture of both. Stroud et al.'s participants were not explicitly instructed to use any particular strategy. These data were revisited to determine which strategy was employed. Each fixated item was categorised according to whether its colour was more similar to one target or the other. Once an item similar to one target is fixated, the next fixated item is more likely to be similar to that target than the other, showing that at a given moment during search, one target is generally favoured. However, the search for one target is not completed before search for the other begins. Instead, there are often short runs of one or two fixations to distractors similar to one target, with each run followed by a switch to the other target. Thus, the results suggest that one target is more highly weighted than the other at any given time, but not to the extent that search is purely successive.

  5. Decryption of pure-position permutation algorithms

    Institute of Scientific and Technical Information of China (English)

    赵晓宇; 陈刚; 张亶; 王肖虹; 董光昌

    2004-01-01

    Pure position permutation image encryption algorithms, commonly used as image encryption investigated in this work are unfortunately frail under known-text attack. In view of the weakness of pure position permutation algorithm,we put forward an effective decryption algorithm for all pure-position permutation algorithms. First, a summary of the pure position permutation image encryption algorithms is given by introducing the concept of ergodic matrices. Then, by using probability theory and algebraic principles, the decryption probability of pure-position permutation algorithms is verified theoretically; and then, by defining the operation system of fuzzy ergodic matrices, we improve a specific decryption al-gorithm. Finally, some simulation results are shown.

  6. Spatially Encoded Pseudo-Pure States for NMR Quantum Information Processing

    CERN Document Server

    Sharf, Y; Cory, D G; Sharf, Yehuda; Havel, Timothy F.; Cory, David G.

    2000-01-01

    Quantum information processing by liquid-state NMR spectroscopy uses pseudo-pure states to mimic the evolution and observations on true pure states. A new method of preparing pseudo-pure states is described, which involves the selection of the spatially labeled states of an ancilla spin with which the spin system of interest is correlated. This permits a general procedure to be given for the preparation of pseudo-pure states on any number of spins, subject to the limitations imposed by the loss of signal from the selected subensemble. The preparation of a single pseudo-pure state is demonstrated by carbon and proton NMR on 13C-labeled alanine. With a judicious choice of magnetic field gradients, the method further allows encoding of up to 2^N pseudo-pure states in independent spatial modes in an N+1 spin system. Fast encoding and decoding schemes are demonstrated for the preparation of four such spatially labeled pseudo-pure states.

  7. Modelling socio-technical aspects of organisational security

    NARCIS (Netherlands)

    Ivanova, Marieta G.

    2016-01-01

    Identification of threats to organisations and risk assessment often take into consideration the pure technical aspects, overlooking the vulnerabilities originating from attacks on a social level, for example social engineering, and abstracting away the physical infrastructure. However, attacks on o

  8. NetView technical research

    Science.gov (United States)

    1993-01-01

    This is the Final Technical Report for the NetView Technical Research task. This report is prepared in accordance with Contract Data Requirements List (CDRL) item A002. NetView assistance was provided and details are presented under the following headings: NetView Management Systems (NMS) project tasks; WBAFB IBM 3090; WPAFB AMDAHL; WPAFB IBM 3084; Hill AFB; McClellan AFB AMDAHL; McClellan AFB IBM 3090; and Warner-Robins AFB.

  9. Installation of a stoker-coal preparation plant in Krakow, Poland. Quarterly technical progress report No. 3, November--December 1994

    Energy Technology Data Exchange (ETDEWEB)

    Rozelle, P.

    1996-01-01

    This report describes the progress made during this reporting period of a two year project to demonstrate that the air pollution from a traveling grate stoker being used to heat water at a central heating plant in Krakow, Poland can be reduced significantly by (1) substituting the unwashed, unsized coal currently being used with a mechanically cleaned, double-sized stoker fuel and by (2) optimizing the operating parameters of the stoker. It is anticipated that these improvements will prove to be cost effective and hence be adopted by the other central heating plants in Krakow and indeed, throughout Eastern European cities where coal continues to be the primary source of fuel. EFH Coal Company has formed a partnership with two Polish institutions -- MPEC, a central heating company in Krakow, and Naftokrak-Naftobudowa, preparation plant designers and fabricators, for the execution of this effort. The washability data from a 20mm x 0.5mm size fraction of raw coal from the Nikwa Modrejow Mine were evaluated. The data show that the ash content of this coal can be reduced from 34.0 percent to 9.0 percent by washing in a heavy-media cyclone at 1.725 sp.gr.; the actual yield of clean coal would be 63.1 percent. This product would meet compliance limitations of 500 a of SO{sub 2}/GJ. An evaluation of the predicted results that can be expected when washing five different candidate Polish coals shows that compliance products containing less than 640 a SO{sub 2}/GJ and 10 percent ash at attractive yields can be produced by washing the raw coals in a heavy-media cyclone. Discussions with financial institutions regarding the cost of producing a quality stoker coal in Poland and for identifying sources of private capital to help cost share the project continued. The search for markets for utilizing surplus production from the new plant continued.

  10. Bringing Planctomycetes into pure culture

    Directory of Open Access Journals (Sweden)

    Olga Maria Lage

    2012-12-01

    Full Text Available Planctomycetes have been known since the description of Planctomyces bekefii by Gimesi at the beginning of the twentieth century (1924, although the first axenic cultures were only obtained in the 1970s. Since then, eleven genera with fourteen species have been validly named and five candidatus genera belonging to the anaerobic ammonium oxidation, anammox bacteria have also been discovered. However, Planctomycetes diversity is much broader than these numbers indicate, as shown by environmental molecular studies. In recent years the authors have attempted to isolate and cultivate additional strains of Planctomycetes. This paper provides a summary of the isolation work that was carried out to obtain in pure culture Planctomycetes from several environmental sources. The following strains and planctomycetes have been successfully isolated: two freshwater strains from the sediments of an aquarium, which were described as a new genus and species, Aquisphaera giovannonii; several Rhodopirellula strains from the sediments of a water treatment recycling tank of a marine fish farm; and more than 140 planctomycetes from the biofilm community of macroalgae. This collection comprises several novel taxa that are being characterized and described. Improvements in the isolation methodology were made in order to optimize and enlarge the number of Planctomycetes isolated from the macroalgae. The existence of an intimate and an important relationship between planctomycetes and macroalgae reported before by molecular studies is therefore supported by culture dependent methods.

  11. Isomerically Pure Tetramethylrhodamine Voltage Reporters.

    Science.gov (United States)

    Deal, Parker E; Kulkarni, Rishikesh U; Al-Abdullatif, Sarah H; Miller, Evan W

    2016-07-27

    We present the design, synthesis, and application of a new family of fluorescent voltage indicators based on isomerically pure tetramethylrhodamines. These new Rhodamine Voltage Reporters, or RhoVRs, use photoinduced electron transfer (PeT) as a trigger for voltage sensing, display excitation and emission profiles in the green to orange region of the visible spectrum, demonstrate high sensitivity to membrane potential changes (up to 47% ΔF/F per 100 mV), and employ a tertiary amide derived from sarcosine, which aids in membrane localization and simultaneously simplifies the synthetic route to the voltage sensors. The most sensitive of the RhoVR dyes, RhoVR 1, features a methoxy-substituted diethylaniline donor and phenylenevinylene molecular wire at the 5'-position of the rhodamine aryl ring, exhibits the highest voltage sensitivity to date for red-shifted PeT-based voltage sensors, and is compatible with simultaneous imaging alongside green fluorescent protein-based indicators. The discoveries that sarcosine-based tertiary amides in the context of molecular-wire voltage indicators prevent dye internalization and 5'-substituted voltage indicators exhibit improved voltage sensitivity should be broadly applicable to other types of PeT-based voltage-sensitive fluorophores.

  12. Crystal Structure Refinement of Synthetic Pure Gyrolite

    Directory of Open Access Journals (Sweden)

    Arūnas Baltušnikas

    2015-03-01

    Full Text Available Pure calcium silicate hydrate – gyrolite was prepared under the saturated steam pressure at 473 K temperature in rotating autoclave. The crystal structure of synthetic gyrolite was investigated by X-ray diffraction and refined using Le Bail, Rietveld and crystal structure modelling methods. Background, peak shape parameters and verification of the space group were performed by the Le Bail full pattern decomposition. Peculiarities of interlayer sheet X of gyrolite unit cell were highlighted by Rietveld refinement. Possible atomic arrangement in interlayer sheet X was solved by global optimization method. Most likelihood crystal structure model of gyrolite was calculated by final Rietveld refinement. It was crystallographically showed, that cell parameters are: a = 0.9713(2 nm, b = 0.9715(2 nm, c = 2.2442(3 nm and alfa = 95.48(2 º, beta = 91.45(2 °, gamma = l20.05(3 °.DOI: http://dx.doi.org/10.5755/j01.ms.21.1.5460

  13. Technical planning activity: Final report

    Energy Technology Data Exchange (ETDEWEB)

    1987-01-01

    In April 1985, the US Department of Energy's (DOE's) Office of Fusion Energy commissioned the Technical Planning Activity (TPA). The purpose of this activity was to develop a technical planning methodology and prepare technical plans in support of the strategic and policy framework of the Magnetic Fusion Program Plan issued by DOE in February 1985. Although this report represents the views of only the US magnetic fusion community, it is international in scope in the sense that the technical plans contained herein describe the full scope of the tasks that are prerequisites for the commercialization of fusion energy. The TPA has developed a well-structured methodology that includes detailed definitions of technical issues, definitions of program areas and elements, statements of research and development objectives, identification of key decision points and milestones, and descriptions of facility requirements.

  14. Imagining Technicities

    DEFF Research Database (Denmark)

    Liboriussen, Bjarke; Plesner, Ursula

    2011-01-01

    The actors of the building industry have access to a range of Information and Communication Technologies (ICTs), and are constantly presented with new software and new communications platforms. Through case studies, and inspired by sociotechnical approaches to the study of emerging technologies......, this article focuses on innovative uses of virtual worlds in architecture. We interviewed architects, industrial designers and other practitioners. Conceptually supported by an understanding of technicity found in Cultural Studies, the interviews were then coded with a focus on interviewees’ references...... to the elements of taste and skill. In the final analysis those references were synthesized as five imagined technicities: the architect, the engineer, the client, the Chinese, and the Virtual World native. Because technicities are often assumed and rarely discussed as actants who influence practice, their role...

  15. Imagining Technicities

    DEFF Research Database (Denmark)

    Liboriussen, Bjarke; Plesner, Ursula

    2011-01-01

    , this article focuses on innovative uses of virtual worlds in architecture. We interviewed architects, industrial designers and other practitioners. Conceptually supported by an understanding of technicity found in Cultural Studies, the interviews were then coded with a focus on interviewees’ references......The actors of the building industry have access to a range of Information and Communication Technologies (ICTs), and are constantly presented with new software and new communications platforms. Through case studies, and inspired by sociotechnical approaches to the study of emerging technologies...... to the elements of taste and skill. In the final analysis those references were synthesized as five imagined technicities: the architect, the engineer, the client, the Chinese, and the Virtual World native. Because technicities are often assumed and rarely discussed as actants who influence practice, their role...

  16. Pure variation and organic stratification.

    Science.gov (United States)

    Rosanvallon, Jérôme

    2012-09-01

    The fundamental problem posed by Darwin distinguishes his theory from any transformism of the past as well as any evolutionism to come: since variation is inherent to the living, it is a question of explaining, not at all why the living varies, but instead why the living does not vary in all directions to the point of constituting a continuum of forms varying ad infinitum. What limits and stabilizes this intrinsically unlimited variation, allowing certain forms to subsist and multiply to the detriment of others, is natural selection. This double principle of intrinsic variation/extrinsic selection constitutes a vector for the unification of reality that underlies Jean-Jacques Kupiec's ontophylogenesis as well as Deleuze and Guattari's global philosophy of Nature. Therefore, everything would potentially tend to incessantly vary. The work of Kupiec and others identifies an intrinsic random variation within ontogenesis itself. For Deleuze and Guattari, it is nothing but the figure, already selected by the organic stratum, of a more fundamental or pure variation. But, in fact, nothing really varies incessantly: everything undergoes a selective pressure according to which nothing subsists as such except what manages to endure through invariance (physical stratum) or reproduction (organic stratum). Thus, organic stratification only retains from variation what ensures and augments this reproduction. In this sense, every organism stratifies, i.e. submits to its imperative of subsistence and reproduction, a body without organs that varies in itself and always tends to escape the organism, for better (intensifications of life) or worse (cancerous pathologies). Copyright © 2012 Elsevier Ltd. All rights reserved.

  17. Tame Kernels of Pure Cubic Fields

    Institute of Scientific and Technical Information of China (English)

    Xiao Yun CHENG

    2012-01-01

    In this paper,we study the p-rank of the tame kernels of pure cubic fields.In particular,we prove that for a fixed positive integer m,there exist infinitely many pure cubic fields whose 3-rank of the tame kernel equal to m.As an application,we determine the 3-rank of their tame kernels for some special pure cubic fields.

  18. A cleaner two-step synthesis of high purity diallyldimethylammonium chloride monomers for flocculant preparation

    Institute of Scientific and Technical Information of China (English)

    TIAN Bing-hui; FAN Bin; PENG Xian-jia; LUAN Zhao-kun

    2005-01-01

    In order to improve the flocculation efficiency of polydiallyldimethylammonium chloride (PDADMAC), high molecular weight PDADMAC should be prepared from high purity diallyldimethylammonium chloride(DADMAC) monomers. In this paper, a cleaner method with microwave irradiation and alkali solidification was proposed for preparing high pure DADMAC by selective heating under low temperature, and the prepared high purity DADMAC is characterized using FTIR and atomic absorption spectrometry. The new method provides a solution to the key technical problem of PDADMAC synthesis. Comparing with the conventional methods, the results showed that the advantages of the novel synthesis include: (a) high purity DADMAC is improved from 57% to 71%; (b) reaction time of tertiary amine preparation is shortened from 6 h to 7 min; (c) water instead of acetone was used as reaction medium; (d) toxic by-products,wastewater and waste gas are eliminated. Flocculant made from the synthesized high purity DADMAC monomers was proved more efficient in flocculation tests.

  19. TECHNICAL COORDINATION

    CERN Multimedia

    A. Ball

    2010-01-01

    Operational Experience At the end of the first full-year running period of LHC, CMS is established as a reliable, robust and mature experiment. In particular common systems and infrastructure faults accounted for <0.6 % CMS downtime during LHC pp physics. Technical operation throughout the entire year was rather smooth, the main faults requiring UXC access being sub-detector power systems and rack-cooling turbines. All such problems were corrected during scheduled technical stops, in the shadow of tunnel access needed by the LHC, or in negotiated accesses or access extensions. Nevertheless, the number of necessary accesses to the UXC averaged more than one per week and the technical stops were inevitably packed with work packages, typically 30 being executed within a few days, placing a high load on the coordination and area management teams. It is an appropriate moment for CMS Technical Coordination to thank all those in many CERN departments and in the Collaboration, who were involved in CMS techni...

  20. TECHNICAL COORDINATION

    CERN Multimedia

    A. Ball

    2010-01-01

    Operational Experience Since the closure of the detector in February, the technical operation of CMS has been quite smooth and reliable. Some minor interventions in UXC were required to cure failures of power supplies, fans, readout boards and rack cooling connections, but all these failures were repaired in scheduled technical stops or parasitically during access dedicated to fixing LHC technical problems. The only occasion when CMS had to request an access between fills was to search for the source of an alarm from the leak-detection cables mounted in the DT racks. After a few minutes of diagnostic search, a leaking air-purge was found. Replacement was complete within 2 hours. This incident demonstrated once more the value of these leak detection cables; the system will be further extended (during the end of year technical stop) to cover more racks in UXC and the floor beneath the detector. The magnet has also been operating reliably and reacted correctly to the 14s power cut on 29 May (see below). In or...

  1. Technical Training: Technical Training Seminar

    CERN Multimedia

    2004-01-01

    TECHNICAL TRAINING Monique Duval tel. 74924 technical.training@cern.ch Monday 9 February 2004 From 10:00 to 12:00 - IT Auditorium - bldg. 31, 3rd floor ANSOFT High-Frequency Seminar David Prestaux, Application Engineer, ANSOFT F-78535 BUC, France This Technical Training seminar will present two Ansoft application products: Ansoft HFSS and Ansoft Designer. Ansoft HFSS makes use of the Finite Element Method (FEM) to calculate field solutions from first principles. It can accurately predict all high-frequency behaviours such as dispersion, mode conversion, and losses due to materials and radiation. Ansoft Designer is a suite of design tools to fully integrate high-frequency, physics-based electromagnetic simulations into a seamless system-level simulation environment. Ansoft Designer uses a simple interface to give complete control over every design task, by a method allowing multiple solvers, Solver on Demand. • Introduction • Overview of the Ansoft Total solution • Ansoft HFSS 9...

  2. Entanglement dynamics of a pure bipartite system in dissipative environments

    Energy Technology Data Exchange (ETDEWEB)

    Tahira, Rabia; Ikram, Manzoor; Azim, Tasnim; Suhail Zubairy, M [Centre for Quantum Physics, COMSATS Institute of Information Technology, Islamabad (Pakistan)

    2008-10-28

    We investigate the phenomenon of sudden death of entanglement in a bipartite system subjected to dissipative environments with arbitrary initial pure entangled state between two atoms. We find that in a vacuum reservoir the presence of the state where both atoms are in excited states is a necessary condition for the sudden death of entanglement. Otherwise entanglement remains for an infinite time and decays asymptotically with the decay of individual qubits. For pure 2-qubit entangled states in a thermal environment, we observe that the sudden death of entanglement always happens. The sudden death time of the entangled states is related to the temperature of the reservoir and the initial preparation of the entangled states.

  3. The Expansion Postponement in Pure Type Systems

    Institute of Scientific and Technical Information of China (English)

    宋方敏

    1997-01-01

    The expansion postponement problem in Pure Type Systems is an open problem raised by R.Pollack in 1992.In this paper,the author presents a set of necessary and sufficient conditions for this problem and a set of sufficient conditions for it.The author also gives some properties for pure typ systems without the expansion rule.

  4. Measuring the entanglement of bipartite pure states

    CERN Document Server

    Sancho, J M

    2000-01-01

    The problem of the experimental determination of the amount of entanglement of a bipartite pure state is addressed. We show that measuring a single observable does not suffice to determine the entanglement of a given unknown pure state of two particles. Possible minimal local measuring strategies are discussed and a comparison is made on the basis of their best achievable precision.

  5. Fundamentals of the pure spinor formalism

    NARCIS (Netherlands)

    Hoogeveen, J.

    2010-01-01

    This thesis presents recent developments within the pure spinor formalism, which has simplified amplitude computations in perturbative string theory, especially when spacetime fermions are involved. Firstly the worldsheet action of both the minimal and the non-minimal pure spinor formalism is derive

  6. Marketing information: The technical report as product

    Science.gov (United States)

    Stoher, F. F.; Pinelli, T. E.

    1981-01-01

    Technical reports constitute a product, the primary means for communicating the results of research to the user. The Langley scientific and technical information (STI) review and evaluation project undertook a review of the technical report as an effective product for information communication. Style manuals describing theory and practice in technical report preparation; publication manuals covering such factors as design, layout, and type style; and copies of technical reports were obtained from industrial, academic, governmental, and research organizations. Based on an analysis of this material, criteria will be established for the report components, for the relationship of the components within the report context, and for the overall report organization. The criteria will be used as bench marks and compared with the publication standards currently used to prepare NASA technical reports.

  7. TECHNICAL COORDINATION

    CERN Multimedia

    A. Ball

    Overview From a technical perspective, CMS has been in “beam operation” state since 6th November. The detector is fully closed with all components operational and the magnetic field is normally at the nominal 3.8T. The UXC cavern is normally closed with the radiation veto set. Access to UXC is now only possible during downtimes of LHC. Such accesses must be carefully planned, documented and carried out in agreement with CMS Technical Coordination, Experimental Area Management, LHC programme coordination and the CCC. Material flow in and out of UXC is now strictly controlled. Access to USC remains possible at any time, although, for safety reasons, it is necessary to register with the shift crew in the control room before going down.It is obligatory for all material leaving UXC to pass through the underground buffer zone for RP scanning, database entry and appropriate labeling for traceability. Technical coordination (notably Stephane Bally and Christoph Schaefer), the shift crew and run ...

  8. Technical Order Managers Reference Data.

    Science.gov (United States)

    1981-05-01

    tile technical manimal . NI WdNTEN *NCEV F; IN(IN El-IING %I \\ NV KM1NT lii proces s of planniing. organizin g. staffing. directingu. anid...ACTIVITY. The activity that prepares the manual. PREVEFNTIN*E MAINTENANCE. The care and servicing by personnel for the( purpose of main- taining equipment

  9. Surprising Beauty in Technical Photography

    Science.gov (United States)

    Davidhazy, Andrew

    2009-01-01

    The Imaging and Photographic Technology area, in which the author teaches, is an applications- and technology-oriented photography program designed to prepare students for work in technical, corporate, industrial, and scientific environments. One day, the author received an e-mail message from an editor who had found his Web site and thought he…

  10. Interculturalizing the Technical or Business Communications Course.

    Science.gov (United States)

    Tippens, Dora

    1993-01-01

    Claims that technical or business communications courses need to be interculturalized to prepare students for the global marketplace. Defines three problems: ethnocentrism, language barriers, and cultural differences. Provides strategies, assignments, and resources for implementing an interculturalized communications course. (HB)

  11. Interculturalizing the Technical or Business Communications Course.

    Science.gov (United States)

    Tippens, Dora

    1993-01-01

    Claims that technical or business communications courses need to be interculturalized to prepare students for the global marketplace. Defines three problems: ethnocentrism, language barriers, and cultural differences. Provides strategies, assignments, and resources for implementing an interculturalized communications course. (HB)

  12. CA6127URE31纯电动客车总体设计%Overall Design of CA6127URE31 Pure Electric Bus

    Institute of Scientific and Technical Information of China (English)

    刘力楠; 孙红; 黄俊杰

    2013-01-01

    The authors briefly introduce the whole vehicle technical parameters, the pure electric system technical plan, the interior decoration technical scheme and the vehicle power battery layout technical scheme of CA6127URE31 pure electric bus.%简要介绍CA6127URE31纯电动客车的整车技术参数、纯电动系统的技术方案、内饰技术方案以及整车动力电池组布置技术方案。

  13. Jinzhai County Household Technical Change and Efficiency Change Analysis: Stochastic Frontier Production Function Approach

    Institute of Scientific and Technical Information of China (English)

    2003-01-01

    Stochastic frontier production function approach is adopted, 93 farmer samples have been collected, pure efficiency, technical efficiency, technical change and scale efficiency and the institutional contribution have been calculated. The results indicated that increasing productivity is the sole measurement to reduce poverty, institution and technical change are the two key factors. Therefore, stable institution, improving technical changes are required. At present, it is urgent to make technical progre...

  14. Preparation of PAC libraries. Final technical report

    Energy Technology Data Exchange (ETDEWEB)

    Pieter J. de Jong

    1997-12-31

    The goals of this project were to create P1 Artificial Chromosome (PAC) cloning vectors and use these vectors to generate, characterize, and distribute both human and mouse genomic PAC libraries to the scientific community.

  15. Leadership Skills among Technical and Vocational Educators

    Science.gov (United States)

    Zakaria, Nurazyan Zahidah; Jizat, Nor Atikah Md.; Zakaria, Normah

    2015-01-01

    The purpose of leadership skills among technical and vocational educator are to prepare them towards effective organization. Effective leadership is widely accepted as being a key constituent in achieving organization improvement and to examine. This study aimed to gauge the leadership skills among technical and vocational educators effectiveness…

  16. Cu/γ-Al2O3的制备及其对纯甘油常压氢解制备1,2-丙二醇的催化性能%Preparation of Cu/γ-Al2 O3 Catalyst and Its Catalytic Performance in Hydrogenolysis of Pure Glycerol to 1,2-Propanediol at Ambient Pressure

    Institute of Scientific and Technical Information of China (English)

    安华良; 范立攀; 耿艳楼; 赵新强; 王延吉

    2015-01-01

    The physicochemical properties of Cu/γ-Al2 O3 catalyst prepared by incipient impregnation method were studied by means of H2-TPR ,XRD ,CO chemisorption ,N2 adsorption-desorption measurement . The catalytic performance of Cu/γ-Al2 O3 for glycerol hydrogenolysis to 1 ,2-propanediol (1 ,2-PDO) was evaluated .The results showed that the suitable Cu loading of Cu/γ-Al2 O3 was 15% ,and the suitable preparation conditions were reduction atmosphere of pure hydrogen ,temperature rising rate of 2℃ /min ,reduction temperature of 250℃ and reduction time of 2 h .Under the reaction conditions of pure glycerol ,atmospheric pressure ,n(H2 )/n(Glycerol)=100 ,Cu/γ-Al2O3 volume of 3 mL ,LHSV = 0.20 h-1 and reaction temperature of 190℃ ,the conversion of glycerol was 100% ,and the selectivity of 1 ,2-PDO was 92.9% .Furthermore ,the selectivity of 1 ,2-PDO was not less than 85% during the 36 h stability test ,demonstrating that Cu/γ-Al2 O3 catalyst exhibited a good stable activity . In Cu/γ-Al2 O3 catalyst Cu particles were highly dispersed on the surface of γ-Al2 O3 .The particle size and dispersion of Cu were the main factors influencing the catalytic performance of Cu/γ-Al2 O3 .The smaller the particle size and the higher the dispersion of Cu ,the better the catalytic performance of Cu/γ-Al2 O3 was .The conversion of glycerol to acetol required both acid sites and metal sites ,and the hydrogenation of acetol to 1 ,2-PDO was the rate controlling step of glycerol hydrogenolysis to 1 ,2-PDO .%采用 H2-T PR、XRD、CO化学吸附、N2吸附-脱附等方法表征了等体积浸渍法制备的Cu/γ-Al2 O3催化剂,并评价了其催化甘油氢解制备1,2-丙二醇(1,2-PDO )反应的性能。结果表明, Cu/γ-Al2 O3的适宜Cu负载量为15%(质量分数),适宜的制备条件为,采用纯 H2还原、升温速率2℃/min、还原温度250℃、还原时间2 h。在常压氢气、甘油液时空速0.20 h-1、氢气/甘油摩尔比100

  17. Technical Training: Technical Training Seminar

    CERN Multimedia

    2004-01-01

    Tuesday 30 March TECHNICAL TRAINING SEMINAR From 9:00 to 12:00 and from 13:00 to 16:00 hrs - Council Chamber, Salle B, Salle des Pas Perdus National Instruments (NI) on Tour 2004 Claudia Jüngel, Evrem Yarkin, Joel Clerc, Hervé Baour / NATIONAL INSTRUMENTS The special event NI on Tour 2004, run in Germany, Austria and Switzerland, will be at CERN on March 30. Technical seminars and free introductory courses will be offered all day long in the Council Chamber, Salle B, and Salle des Pas Perdus (buildings 61 and 503). Technical conferences: 09:00 - 12:00 Data acquisition systems on PCs. Industrial measurement and control techniques. 13:00 - 16:00 Advanced LabVIEW software and PXI instrumentation. Measuring instruments and system components for teststand automation. Introductory courses: 09:00 - 12:00 DIAdem: Data analysis and presentation 13:00 - 16:00 Data acquisition with LabVIEW Language: English and French Free special seminar. Registration is recommended with National Instruments Swi...

  18. Technical Training: Technical Training Seminar

    CERN Multimedia

    2004-01-01

    Tuesday 30 March TECHNICAL TRAINING SEMINAR From 9:00 to 12:00 and from 13:00 to 16:00 hrs - Council Chamber, Salle B, Salle des Pas Perdus National Instruments (NI) on Tour 2004 Claudia Jüngel, Evrem Yarkin, Joel Clerc, Hervé Baour / NATIONAL INSTRUMENTS The special event NI on Tour 2004, run in Germany, Austria and Switzerland, will be at CERN on March 30. Technical seminars and free introductory courses will be offered all day long in the Council Chamber, Salle B, and Salle des Pas Perdus (buildings 61 and 503). Technical conferences: 09:00 - 12:00 Data acquisition systems on PCs. Industrial measurement and control techniques. 13:00 - 16:00 Advanced LabVIEW software and PXI instrumentation. Measuring instruments and system components for teststand automation. Introductory courses: 09:00 - 12:00 DIAdem: Data analysis and presentation 13:00 - 16:00 Data acquisition with LabVIEW Language: English and French Free special seminar. Registration is recommended with National Instruments Switzerland (please sp...

  19. Conformal pure radiation with parallel rays

    CERN Document Server

    Leistner, Thomas

    2011-01-01

    We define pure radiation metrics with parallel rays to be n-dimensional pseudo-Riemannian metrics that admit a parallel null line bundle K and whose Ricci tensor vanishes on vectors that are orthogonal to K. We give necessary conditions in terms of the Weyl, Cotton and Bach tensors for a pseudo-Riemannian metric to be conformal to a pure radiation metric with parallel rays. Then we derive conditions in terms of tractor calculus that are equivalent to the existence of a pure radiation metric with parallel rays in a conformal class. We also give an analogous result for n-dimensional pseudo-Riemannian pp-waves.

  20. Pure red cell aplasia and associated thymoma

    Directory of Open Access Journals (Sweden)

    Cristian Rosu

    2011-04-01

    Full Text Available Pure red cell aplasia is a rare cause of anemia, caused by an absence of red blood cell precursors in the bone marrow. It is usually a paraneoplastic syndrome, associated most commonly with large-cell granular lymphocyte leukemia but also thymoma. For patients who present both pure red cell aplasia and thymoma, thymectomy leads to an initial remission of the aplasia in 30% of cases. However, sustained remission may require the addition of medications such as corticosteroids, cyclospo­rine, or cyclophosphamide. We present a case of pure red cell aplasia associated with a thymoma in an otherwise healthy 80 year-old woman.

  1. Probabilistically Perfect Cloning of Two Pure States: Geometric Approach

    Science.gov (United States)

    Yerokhin, V.; Shehu, A.; Feldman, E.; Bagan, E.; Bergou, J. A.

    2016-05-01

    We solve the long-standing problem of making n perfect clones from m copies of one of two known pure states with minimum failure probability in the general case where the known states have arbitrary a priori probabilities. The solution emerges from a geometric formulation of the problem. This formulation reveals that cloning converges to state discrimination followed by state preparation as the number of clones goes to infinity. The convergence exhibits a phenomenon analogous to a second-order symmetry-breaking phase transition.

  2. TECHNICAL COORDINATION

    CERN Multimedia

    A. Ball

    Although the incident on 19th September brought an untimely, temporary close to the exciting and successful commissioning of CMS with beam, activity at point 5 resumed with barely reduced intensity once underground access was restored. The preliminary steps were to re-fill the beamipe to atmospheric pressure with pure neon gas, to de-classify the cavern for radiological risks and to get agreement for formally deferring screening and tracing of material extracted from UXC. As planned, attention was then focused on completing commissioning of the solenoid, whose progression towards nominal 3.8 Tesla operating field had been interrupted a few shifts from its conclusion. Additional mechanical restraints and shielding structures needed to be installed to control the effects of field escaping from the return yoke and finding other pathways between the magnet poles. Certain pumps, sensors, lights and cameras, absent during the extensive “MTCC” surface testing in 2006, needed to be protected, w...

  3. Atomic model of liquid pure Fe

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    Using a θ-θX-ray diffractometer, the liquid structure of pure Fewas investigated and the diffraction intensity, structure factor, pair distribution function as well as the coordination number and atomic distance were obtained. The experimental results showed that there was also a pre-peak on the curve of the structure factor of liquid pure Fe. The pre-peak is a mark of medium-range order in melts. According to the characteristics of pre-peak, an atomic model of liquid pure Fe is constructed, namely, the structure of liquid pure Fe is a combination of clusters consisting of bcc cells with shared vertexes and other atoms with random dense atom distribution.

  4. TECHNICAL COORDINATION

    CERN Multimedia

    A. Ball and W. Zeuner

    2011-01-01

      Operational experience 2011 CMS is approaching the end of a very successful year of operation. Proton- proton running ended in the late afternoon of 30th October with a stunning 5.73 fb–1 delivered by LHC, of which CMS recorded 5.22 fb–1. During heavy-ion operation, which continues until 7th December, both the accelerator and the CMS detector have also performed very well. Despite the encouraging overall reliability of technical operation, several infrastructure failures which occurred since the last Bulletin are worthy of mention, with one leading for the first time to significant data-loss. On 10th July, a CERN-wide power failure brought down essentially all services including the magnet, due to an MCS setting being left in “manual” after the recent technical stop, but there was no significant damage and the detector was operational before the LHC, despite a slow and tortuous recovery (one of several indications this year that there is room for improve...

  5. Entropy product measure for multipartite pure states

    Institute of Scientific and Technical Information of China (English)

    CAO Wancang; LIU Dan; PAN Feng; LONG Guilu

    2006-01-01

    An entanglement measure for multipartite pure states is formulated using the product of the von Neumann entropy of the reduced density matrices of the constituents.Based on this new measure, all possible ways of the maximal entanglement of the triqubit pure states are studied in detail and all types of the maximal entanglement have been culate the degree of entanglement, and an improvement is given in the area near the zero entropy.

  6. Diphenylhydantoin-induced pure red cell aplasia.

    Science.gov (United States)

    Rusia, Usha; Malhotra, Purnima; Joshi, Panul

    2006-01-01

    Pure red cell aplasia is an uncommon complication of diphenylhydantoin therapy. It has not been reported in Indian literature. Awareness of the entity helps in establishing the cause of anaemia in these patients and alerts the physicians to the need of comprehensive haematological monitoring in these patients. A case of 58-year-old male who developed pure red cell aplasia following three months of diphenylhydantoin therapy is reported here.

  7. Expander Graphs in Pure and Applied Mathematics

    OpenAIRE

    Lubotzky, Alexander

    2011-01-01

    Expander graphs are highly connected sparse finite graphs. They play an important role in computer science as basic building blocks for network constructions, error correcting codes, algorithms and more. In recent years they have started to play an increasing role also in pure mathematics: number theory, group theory, geometry and more. This expository article describes their constructions and various applications in pure and applied mathematics.

  8. Dark fermentation on biohydrogen production: Pure culture.

    Science.gov (United States)

    Lee, Duu-Jong; Show, Kuan-Yeow; Su, Ay

    2011-09-01

    Biohydrogen is regarded as an attractive future clean energy carrier due to its high energy content and environmental-friendly conversion. While biohydrogen production is still in the early stage of development, there have been a variety of laboratory- and pilot-scale systems developed with promising potential. This work presents a review of literature reports on the pure hydrogen-producers under anaerobic environment. Challenges and perspective of biohydrogen production with pure cultures are also outlined.

  9. TECHNICAL REPORT

    Energy Technology Data Exchange (ETDEWEB)

    ADAMS, RICHARD D., PhD.

    2011-04-06

    Cadmium selenide nanoparticles and nanoclusters were prepared and added to polymer solar cells to improve their photon capture ability. These nanoparticles did exhibit some beneficial effects on the photon conversion efficiencies of selected polymer solar cells. Ternary bulk heterojunction systems based on composites of methyl viologen-doped, CdSe nanoparticles blended with poly (3-hexothiopene) (P3HT) and 6, 6-phenyl C{sub 61}-butyric acid methyl ester (PCBM) were also tested. It was found that the devices with methyl viologen-doped CdSe nanoparticles do produce more photocurrent in a region surrounding the absorption peak of the particles (560 to 660nm) when compared to pristine P3HT:PCBM devices. Gold nanorods were also prepared and tested in some solar cells. These nanorods did produce a very small enhancement in photon absorbance, but the observed increase the photon conversion efficiency was not sufficient to make the effort worthwhile. Our goals were (1) to prepare cadmium sulfide and cadmium selenide clusters and nanoparticles to be tested as photon absorbers to enhance the photon conversion efficiency of polymer solar polymer solar cells and (2) to prepare gold and silver nanorods to be added to polymer solar cells to enhance their photon capture capability. The cadmium sulfide and cadmium selenide nanoparticles and some new nanoclusters were prepared. The cadmium selenide nanoparticles were also tested in solar cells and did exhibit some positive effects when they were combined with certain co-absorbing polymers. Due to solubility problems that were not solved in the available time, the new nanoclusters were not tested in solar cells. Ternary bulk heterojunction systems based on composites of methyl viologen doped, CdSe nanoparticles blended with poly (3-hexothiopene) (P3HT) and 6, 6-phenyl C61-butyric acid methyl ester (PCBM) have been examined in detail. The methyl viologen was added to promote charge separation of the initially formed excitons. It was

  10. Rehabilitation of pure alexia: A review

    Science.gov (United States)

    Starrfelt, Randi; Ólafsdóttir, Rannveig Rós; Arendt, Ida-Marie

    2013-01-01

    Acquired reading problems caused by brain injury (alexia) are common, either as a part of an aphasic syndrome, or as an isolated symptom. In pure alexia, reading is impaired while other language functions, including writing, are spared. Being in many ways a simple syndrome, one would think that pure alexia was an easy target for rehabilitation efforts. We review the literature on rehabilitation of pure alexia from 1990 to the present, and find that patients differ widely on several dimensions, such as alexia severity and associated deficits. Many patients reported to have pure alexia in the reviewed studies, have associated deficits such as agraphia or aphasia and thus do not strictly conform to the diagnosis. Few studies report clear and generalisable effects of training, none report control data, and in many cases the reported findings are not supported by statistics. We can, however, tentatively conclude that Multiple Oral Re-reading techniques may have some effect in mild pure alexia where diminished reading speed is the main problem, while Tacile-Kinesthetic training may improve letter identification in more severe cases of alexia. There is, however, still a great need for well-designed and controlled studies of rehabilitation of pure alexia. PMID:23808895

  11. Technical approach document

    Energy Technology Data Exchange (ETDEWEB)

    1989-12-01

    The Uranium Mill Tailings Radiation Control Act (UMTRCA) of 1978, Public Law 95-604 (PL95-604), grants the Secretary of Energy the authority and responsibility to perform such actions as are necessary to minimize radiation health hazards and other environmental hazards caused by inactive uranium mill sites. This Technical Approach Document (TAD) describes the general technical approaches and design criteria adopted by the US Department of Energy (DOE) in order to implement remedial action plans (RAPS) and final designs that comply with EPA standards. It does not address the technical approaches necessary for aquifer restoration at processing sites; a guidance document, currently in preparation, will describe aquifer restoration concerns and technical protocols. This document is a second revision to the original document issued in May 1986; the revision has been made in response to changes to the groundwater standards of 40 CFR 192, Subparts A--C, proposed by EPA as draft standards. New sections were added to define the design approaches and designs necessary to comply with the groundwater standards. These new sections are in addition to changes made throughout the document to reflect current procedures, especially in cover design, water resources protection, and alternate site selection; only minor revisions were made to some of the sections. Sections 3.0 is a new section defining the approach taken in the design of disposal cells; Section 4.0 has been revised to include design of vegetated covers; Section 8.0 discusses design approaches necessary for compliance with the groundwater standards; and Section 9.0 is a new section dealing with nonradiological hazardous constituents. 203 refs., 18 figs., 26 tabs.

  12. Technical presentation

    CERN Multimedia

    FP Department

    2009-01-01

    07 April 2009 Technical presentation by Leuze Electronics: 14.00 – 15.00, Main Building, Room 61-1-017 (Room A) Photoelectric sensors, data identification and transmission systems, image processing systems. We at Leuze Electronics are "the sensor people": we have been specialising in optoelectronic sensors and safety technology for accident prevention for over 40 years. Our dedicated staff are all highly customer oriented. Customers of Leuze Electronics can always rely on one thing – on us! •\tFounded in 1963 •\t740 employees •\t115 MEUR turnover •\t20 subsidiaries •\t3 production facilities in southern Germany Product groups: •\tPhotoelectric sensors •\tIdentification and measurements •\tSafety devices

  13. Technical presentation

    CERN Multimedia

    GS Department

    2010-01-01

    10 March 2010 DYNEOS 10:00 – 12:00 - Main Building, Room B, 61-1-009 Dyneos AG is active in the fields of photonics, laser and high-precision positioning. Our highly qualified engineer team has more than 30 years of experience in electro-optical solutions sales. The engineers are supported by a technical and administrative team. We are focused on the Swiss market and represent six suppliers (Coherent, PI Physik Instrumente, SIOS, Nanonics Imaging, APE, Ekspla) in order to give a qualified sales and service support to our customers. Our products are dedicated to the research field as well as to industry. In addition to standard catalog products, we offer custom designs to fulfill the specific needs of OEM customers or specific applications.

  14. Technical presentation

    CERN Multimedia

    FI Department

    2008-01-01

    RADIOSPARES, the leading catalogue distributor of components (electronic, electrical, automation, etc.) and industrial supplies will be at CERN on Friday 3 October 2008 (Main Building, Room B, from 9.00 a.m. to 3.00 p.m.) to introduce its new 2008/2009 catalogue. This will be the opportunity for us to present our complete range of products in more detail: 400 000 part numbers available on our web site (Radiospares France, RS International, extended range of components from other manufacturers); our new services: quotations, search for products not included in the catalogue, SBP products (Small Batch Production: packaging in quantities adapted to customers’ requirements); partnership with our focus manufacturers; demonstration of the on-line purchasing tool implemented on our web site in conjunction with CERN. RADIOSPARES will be accompanied by representatives of FLUKE and TYCO ELECTRONICS, who will make presentations, demonstrate materials and answer any technical questio...

  15. Technical Training: Technical Training Seminar

    CERN Multimedia

    2004-01-01

    TECHNICAL TRAINING Monique Duval tel. 74924 technical.training@cern.ch Tuesday 3 February 2004 From 09:00 to 13:30 - Training Centre Auditorium - bldg. 593, room 11 USB (Universal Serial Bus) CYPRESS Seminar Claudia Colombini, Field Application Engineer CYPRESS ActiveComp Electronic GmbH D-85077 MANCHING, Germany As a pioneer in USB, CYPRESS sets the standard for cost-effective solutions without sacrificing functionality, performance or reliability. Having shipped over 200 million USB devices, Cypress is the undisputed market leader and demonstrates unmatched USB expertise. With the industry's broadest selection of USB solutions, Cypress has the right silicon, software and support for every USB application, from Low-speed to High-Speed and USB On-The-Go (OTG). 9:00 - 10:30 Overview of USB systems. USB CYPRESS product overview. Peripherals: Low Speed, Full Speed, High Speed (1.1 and 2.0). Hub Solutions, Embedded Host Solutions, On-The-Go (OTG) and wireless USB. USB Development Tools (first part) 10:30 -...

  16. Experimentally superposing two pure states with partial prior knowledge

    Science.gov (United States)

    Li, Keren; Long, Guofei; Katiyar, Hemant; Xin, Tao; Feng, Guanru; Lu, Dawei; Laflamme, Raymond

    2017-02-01

    Superposition, arguably the most fundamental property of quantum mechanics, lies at the heart of quantum information science. However, how to create the superposition of any two unknown pure states remains as a daunting challenge. Recently, it was proved that such a quantum protocol does not exist if the two input states are completely unknown, whereas a probabilistic protocol is still available with some prior knowledge about the input states [M. Oszmaniec et al., Phys. Rev. Lett. 116, 110403 (2016), 10.1103/PhysRevLett.116.110403]. The knowledge is that both of the two input states have nonzero overlaps with some given referential state. In this work, we experimentally realize the probabilistic protocol of superposing two pure states in a three-qubit nuclear magnetic resonance system. We demonstrate the feasibility of the protocol by preparing a families of input states, and the average fidelity between the prepared state and expected superposition state is over 99%. Moreover, we experimentally illustrate the limitation of the protocol that it is likely to fail or yields very low fidelity, if the nonzero overlaps are approaching zero. Our experimental implementation can be extended to more complex situations and other quantum systems.

  17. 25 CFR 286.11 - Management and technical assistance.

    Science.gov (United States)

    2010-04-01

    ... 25 Indians 1 2010-04-01 2010-04-01 false Management and technical assistance. 286.11 Section 286... DEVELOPMENT PROGRAM § 286.11 Management and technical assistance. (a) Prior to and concurrent with the making... insure that competent management and technical assistance is available to the grantee in the preparation...

  18. Nokia PureView oversampling technology

    Science.gov (United States)

    Vuori, Tero; Alakarhu, Juha; Salmelin, Eero; Partinen, Ari

    2013-03-01

    This paper describes Nokia's PureView oversampling imaging technology as well as the product, Nokia 808 PureView, featuring it. The Nokia PureView imaging technology is the combination of a large, super high resolution 41Mpix with high performance Carl Zeiss optics. Large sensor enables a pixel oversampling technique that reduces an image taken at full resolution into a lower resolution picture, thus achieving higher definition and light sensitivity. One oversampled super pixel in image file is formed by using many sensor pixels. A large sensor enables also a lossless zoom. If a user wants to use the lossless zoom, the sensor image is cropped. However, up-scaling is not needed as in traditional digital zooming usually used in mobile devices. Lossless zooming means image quality that does not have the digital zooming artifacts as well as no optical zooming artifacts like zoom lens system distortions. Zooming with PureView is also completely silent. PureView imaging technology is the result of many years of research and development and the tangible fruits of this work are exceptional image quality, lossless zoom, and superior low light performance.

  19. Structural anatomy of pure and hemianopic alexia.

    Science.gov (United States)

    Leff, A P; Spitsyna, G; Plant, G T; Wise, R J S

    2006-09-01

    The two most common types of acquired reading disorder resulting from damage to the territory of the dominant posterior cerebral artery are hemianopic and pure alexia. Patients with pronounced hemianopic alexia have a right homonymous hemianopia that encroaches into central or parafoveal vision; they read individual words well, but generate inefficient reading saccades when reading along a line of text. Patients with pure alexia also often have a hemianopia but are more disabled, making frequent errors on individual words; they have sustained damage to a brain region that supports efficient word identification. To investigate the differences in lesion site between hemianopic alexia and pure alexia groups, as rehabilitative techniques differ between the two conditions. High-resolution magnetic resonance images were obtained from seven patients with hemianopic alexia and from six patients with pure alexia caused by a left occipital stroke. The boundary of each lesion was defined and lesion volumes were then transformed into a standard stereotactic space so that regional comparisons could be made. The two patient groups did not differ in terms of damage to the medial left occipital lobe, but those with pure alexia had additional lateral damage to the posterior fusiform gyrus and adjacent tissue. Clinicians will be able to predict the type of reading disorder patients with left occipital lesions have from simple tests of reading speed and the distribution of damage to the left occipital lobe on brain imaging. This information will aid management decisions, including recommendations for reading rehabilitation.

  20. Pure plate bending in couple stress theories

    CERN Document Server

    Hadjesfandiari, Ali R; Dargush, Gary F

    2016-01-01

    In this paper, we examine the pure bending of plates within the framework of modified couple stress theory (M-CST) and consistent couple stress theory (C-CST). In this development, it is demonstrated that M-CST does not describe pure bending of a plate properly. Particularly, M-CST predicts no couple-stresses and no size effect for the pure bending of the plate into a spherical shell. This contradicts our expectation that couple stress theory should predict some size effect for such a deformation pattern. Therefore, this result clearly demonstrates another inconsistency of indeterminate symmetric modified couple stress theory (M-CST), which is based on considering the symmetric torsion tensor as the curvature tensor. On the other hand, the fully determinate skew-symmetric consistent couple stress theory (C-CST) predicts results for pure plate bending that tend to agree with mechanics intuition and experimental evidence. Particularly, C-CST predicts couple-stresses and size effects for the pure bending of the ...

  1. Technical Support and Transfer of Geothrmal Technical Knowledge and Information

    Energy Technology Data Exchange (ETDEWEB)

    John W. Lund; Toni" Boyd

    2007-11-14

    The Geo-Heat Center (GHC) staff provided responses to 1442 technical support requests during the contract period (April 1, 2006 to September 30, 2007), which were six quarters under this contract. Our website, consisting of 1900 files, also contributes to our technical assistance activity. Downloaded files were 1,889,323 (3,448 per day) from our website, the total number of users was 1,365,258 (2,491 per day), and the total number of hits were 6,008,500 (10,064 per day). The GHC staff attended 60 workshops, short course and professional meeting and made 29 technical presentations. The staff also prepared and mailed out 2,000 copies of each of five issues of the GHC Quaterly Bulletin which contained 26 articles. We also mailed out approximately 5,000 papers and publications to interested individuals and organizations.

  2. Dynamic recrystallization behavior of commercial pure aluminum

    Institute of Scientific and Technical Information of China (English)

    LI Hui-zhong; ZHANG Xin-ming; CHEN Ming-an; LIU Zi-juan

    2006-01-01

    The flow stress feature and microstructure evolvement of a commercial pure aluminum were investigated by compression on Gleeble-1500 dynamic materials test machine. Optical microscopy (OM) and transmission electron microscopy (TEM) were applied to analyze the deformation microstructure of the commercial pure aluminum.The results show that the flow stress tends to be constant after a peak value and the dynamic recovery occurs when the deformation temperatures is 220 ℃ with the strain rate of 0.01 s-1; while the dynamic recrystallization occurs when the deformation temperature is higher than 380 ℃, and the flow stress exhibits a single peak at 460 ℃ with different strain rates from 0.001 s-1 to 1 s-1, and continuous dynamic recrystallization and geometric dynamic recrystallization occur during the hot compression of the commercial pure aluminum.

  3. DOE technical standards list: Department of Energy standards index

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-05-01

    This Department of Energy (DOE) technical standards list (TSL) has been prepared by the Office of Nuclear Safety Policy and Standards (EH-31) on the basis of currently available technical information. Periodic updates of this TSL will be issued as additional information is received on standardization documents being issued, adopted, or canceled by DOE. This document was prepared for use by personnel involved in the selection and use of DOE technical standards and other Government and non-Government standards. This TSL provides listings of current DOE technical standards, non-Government standards that have been adopted by DOE, other standards-related documents in which DOE has a recorded interest, and canceled DOE technical standards. Information on new DOE technical standards projects, technical standards released for coordination, recently published DOE technical standards, and activities of non-Government standards bodies that may be of interest to DOE is published monthly in Standards Actions.

  4. Pure neuritic leprosy: Current status and relevance

    Directory of Open Access Journals (Sweden)

    P Narasimha Rao

    2016-01-01

    Full Text Available Pure neuritic leprosy has always been an enigma due to its clinical and management ambiguities. Although only the Indian Association of Leprologist's classification recognizes 'pure neuritic leprosy' as a distinct sub group of leprosy, cases nonetheless are reported from various countries of Asia, Africa, South America and Europe, indicating its global relevance. It is important to maintain pure neuritic leprosy as a subgroup as it constitutes a good percentage of leprosy cases reported from India, which contributes to more than half of global leprosy numbers. Unfortunately, a high proportion of these patients present with Grade 2 disability at the time of initial reporting itself due to the early nerve involvement. Although skin lesions are absent by definition, when skin biopsies were performed from the skin along the distribution of the affected nerve, a proportion of patients demonstrated leprosy pathology, revealing sub-clinical skin involvement. In addition on follow-up, skin lesions are noted to develop in up to 20% of pure neuritic leprosy cases, indicating its progression to manifest cutaneous disease. Over the decades, the confirmation of diagnosis of pure neuritic leprosy has been subjective, however, with the arrival and use of high-resolution ultrasonography (HRUS for nerve imaging, we have a tool not only to objectively measure and record the nerve thickening but also to assess the morphological alterations in the nerve including echo texture, fascicular pattern and vascularity. Management of pure neuritic leprosy requires multidrug therapy along with appropriate dose of systemic corticosteroids, for both acute and silent neuritis. Measures for pain relief, self-care of limbs and physiotherapy are important to prevent as well as manage disabilities in this group of patients.

  5. Pure neuritic leprosy: Current status and relevance.

    Science.gov (United States)

    Rao, P Narasimha; Suneetha, Sujai

    2016-01-01

    Pure neuritic leprosy has always been an enigma due to its clinical and management ambiguities. Although only the Indian Association of Leprologist's classification recognizes 'pure neuritic leprosy' as a distinct sub group of leprosy, cases nonetheless are reported from various countries of Asia, Africa, South America and Europe, indicating its global relevance. It is important to maintain pure neuritic leprosy as a subgroup as it constitutes a good percentage of leprosy cases reported from India, which contributes to more than half of global leprosy numbers. Unfortunately, a high proportion of these patients present with Grade 2 disability at the time of initial reporting itself due to the early nerve involvement. Although skin lesions are absent by definition, when skin biopsies were performed from the skin along the distribution of the affected nerve, a proportion of patients demonstrated leprosy pathology, revealing sub-clinical skin involvement. In addition on follow-up, skin lesions are noted to develop in up to 20% of pure neuritic leprosy cases, indicating its progression to manifest cutaneous disease. Over the decades, the confirmation of diagnosis of pure neuritic leprosy has been subjective, however, with the arrival and use of high-resolution ultrasonography (HRUS) for nerve imaging, we have a tool not only to objectively measure and record the nerve thickening but also to assess the morphological alterations in the nerve including echo texture, fascicular pattern and vascularity. Management of pure neuritic leprosy requires multidrug therapy along with appropriate dose of systemic corticosteroids, for both acute and silent neuritis. Measures for pain relief, self-care of limbs and physiotherapy are important to prevent as well as manage disabilities in this group of patients.

  6. Comparison of Diesel Engine Characteristic Using Pure Coconut Oil, Pure Palm Oil, and Pure Jatropha Oil as Fuel

    Directory of Open Access Journals (Sweden)

    Iman K. Reksowardojo

    2009-01-01

    Full Text Available Diesel engine can be operated on either pure plant oil (PPO oil or biodiesel. Biodiesel production process is expensive due to many stages of processes, while PPO has a lower cost of production, lower energy consumption, and simpler process. There are several potential biofuel resources in Indonesia such as coconut, palm, and jatropha. They are tropical plants with large amonts of their quantity. Experiment was conducted in 17 hours engine running test (endurance test with various operating cycle conditions. Test fuels are pure coconut oil (PCO, pure palm oil (PPaO, pure jatropha oil (PJO, and diesel fuel (DF as a datum. Each PPO blends with diesel fuel with composition 50%-volume. As a result, PCO has higher BSFC (10% before endurance test in comparison with diesel fuel, also PPaO (13% and PJO (27% show a similar condition. Surprisingly, all PPO have BSFC almost similar with DF after endurance test due to decreasing of engine components friction. On the other hand, PPO produces more uncompleted combustion than DF. Phosporus content has major responsibility of deposit growth. PCO, PPaO, and PJO result more engine deposits in comparison with DF, which accounts for 139,7%, 232,9%, and 288,9% respectively. Based on wear analysis, PCO has the best antiwear property among test fuels, whereas the worst is DF.

  7. TECHNICAL COORDINATION

    CERN Multimedia

    A. Ball and W. Zeuner

    2012-01-01

      UXC + detectors As explained in detail in the November 2011 bulletin, the bellows unit at −18.5 m from the CMS interaction point was identified as a prime candidate for the regularly occurring pressure spikes which occasionally led to sustained severe background conditions in 2011, affecting dead time and data quality. Similar regions in LHC with vacuum instabilities were observed to be close to bellows, which radiography showed to have distorted RF-fingers — on removal, they proved to have been severely overheated. The plans for the Year-End Technical Stop were adapted to prioritise radiography of the bellows at 16 m to 18 m either end of CMS. Excellent work by the beam pipe, survey and heavy mechanical teams allowed the X-rays to be taken as planned on 20th December, showing that the bellow at −18.5m had an obvious non-conformity. The RF-fingers were found inside the end of the opposing flared pipe instead of outside. In addition, the overlap between fingers and...

  8. Minimal covariant observables identifying all pure states

    Energy Technology Data Exchange (ETDEWEB)

    Carmeli, Claudio, E-mail: claudio.carmeli@gmail.com [D.I.M.E., Università di Genova, Via Cadorna 2, I-17100 Savona (Italy); I.N.F.N., Sezione di Genova, Via Dodecaneso 33, I-16146 Genova (Italy); Heinosaari, Teiko, E-mail: teiko.heinosaari@utu.fi [Turku Centre for Quantum Physics, Department of Physics and Astronomy, University of Turku (Finland); Toigo, Alessandro, E-mail: alessandro.toigo@polimi.it [Dipartimento di Matematica, Politecnico di Milano, Piazza Leonardo da Vinci 32, I-20133 Milano (Italy); I.N.F.N., Sezione di Milano, Via Celoria 16, I-20133 Milano (Italy)

    2013-09-02

    It has been recently shown by Heinosaari, Mazzarella and Wolf (2013) [1] that an observable that identifies all pure states of a d-dimensional quantum system has minimally 4d−4 outcomes or slightly less (the exact number depending on d). However, no simple construction of this type of minimal observable is known. We investigate covariant observables that identify all pure states and have minimal number of outcomes. It is shown that the existence of this kind of observables depends on the dimension of the Hilbert space.

  9. Acceptability of Musa Balbisiana (Saba Banana Puree in Two Treatments in Making Ice Cream

    Directory of Open Access Journals (Sweden)

    Mario A. De Castro Jr.

    2016-11-01

    Full Text Available Musa Balbisiana or Saba is a variety of banana fruit that is nutritious and readily available in the market the whole year round. This experimental study aimed to determine the acceptability of the ice cream made from Saba banana puree in two treatments (treatment 1- cooked puree and treatment 2- uncooked puree. Data gathered were described and analyzed using a special Analysis of Variance. The sensory characteristics of the ice cream in two treatments were compared with one another based on the 9-point hedonic scale utilized by trained panelist in the education sector in secondary, tertiary and graduate school level that specialized in food related discipline such as Food Technology, Food Service Management, Technology and Livelihood Education- Food Trades and Hotel and Restaurant Management. Results indicated that in treatment 1( cooked puree the taste and texture of the ice cream were liked extremely however its color was rated liked very much, while in treatment 2 (uncooked puree the texture and color were rated liked moderately while its taste was rated liked very much. A comparison of the sensory characteristics between the two treatments revealed that there is a significant difference in terms of taste, texture and color and overall acceptability of the Saba banana ice cream. It is then recommended that in preparing Saba banana puree using treatment 1 (cooking method, the fruit should be subjected in numerous sieving process using a fine mesh siever or sifter to produce good quality puree texture.

  10. DOE technical standards list. Department of Energy standards index

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1995-08-01

    This document was prepared for use by personnel involved in the selection and use of DOE technical standards and other Government and non-Government standards. This TSL provides listing of current DOE technical standards, non-Government standards that have been adopted by DOE, other Government documents in which DOE has a recorded interest, and canceled DOE technical standards. Information on new DOE technical standards projects, technical standards released for coordination, recently published DOE technical standards, and activities of non-Government standards bodies that may be of interest to DOE is published monthly in Standards Actions.

  11. Attitude influence on performance in technical skill acquisition among formal technical trainees

    Directory of Open Access Journals (Sweden)

    Adinife Patrick Azodo

    2014-08-01

    Full Text Available This cross-sectional study analyzed attitude influence on performance in technical skill involved in a specific trade chosen among all the formal technical trainees of Don Bosco Technical Institute (DBTI, Onitsha, Nigeria. This study was carried out between May and July, 2013. The 24-item questionnaire, designed after critical examination and revision of some related studies and a combination of individual technical projects, sequence of job operation prepared by the students and written tests which cumulatively made up the school academic performance record in technical work were used to assess students’ attitude and performance respectively. Analysis of the data showed that majority of the students have positive attitudes towards technical skill involved in technical education. There is also positive relationships between students’ attitude in technical skill acquisition and their performance. This was evident from the overall attitude and performance mean scores of 4.3333 and 69.8376 representing 86.67% and 69.84% respectively. Pearson correlation coefficient (r of relationship between attitude and performance in technical skill involved in technical education gave an ‘r’ value of 0.366 which was a positive correlation. However, the good performance and knowledge of the usefulness of technical skills in life did not stimulate the students to continue their careers in a related technical profession. This demands serious attention.

  12. Pure word deafness and pure anarthria in a patient with frontotemporal dementia.

    Science.gov (United States)

    Iizuka, O; Suzuki, K; Endo, K; Fujii, T; Mori, E

    2007-04-01

    A 66-year-old right-handed man developed pure anarthria following pure word deafness. In addition to language disorders, his behavior gradually changed and finally included violence against his wife. Brain magnetic resonance imagings revealed atrophy of the left perisylvian area, which included the inferior half of the precentral gyrus and the upper portion of the superior temporal gyrus, consistent with frontotemporal dementia (FTD). It has been documented as either a disorder of expressive language or as an impaired understanding of word meaning. Unlike with pure anarthria, pure word deafness is not included in the clinical diagnostic current criteria for FTD. However, a large variety of language symptoms can appear in FTD according to the distribution of pathological changes in the frontotemporal cortices. This case suggests that pure word deafness could be a prodomal symptom of FTD.

  13. Modelling Socio-Technical Aspects of Organisational Security

    DEFF Research Database (Denmark)

    Ivanova, Marieta Georgieva

    Identification of threats to organisations and risk assessment often take into consideration the pure technical aspects, overlooking the vulnerabilities originating from attacks on a social level, for example social engineering, and abstracting away the physical infrastructure. However, attacks o...... it. We validate our approach using scenarios from IPTV and Cloud Infrastructure case studies....... on organisations are far from being purely technical. After all, organisations consist of employees. Often the human factor appears to be the weakest point in the security of organisations. It may be easier to break through a system using a social engineering attack rather than a pure technological one. The Stux......Net attack is only one of the many examples showing that vulnerabilities of organisations are increasingly exploited on different levels including the human factor. There is an urgent need for integration between the technical and social aspects of systems in assessing their security. Such an integration...

  14. Are all maximally entangled states pure?

    CERN Document Server

    Cavalcanti, D; Terra-Cunha, M O

    2005-01-01

    In this Letter we study if all maximally entangled states are pure through several entanglement monotones. Our conclusions allow us to generalize the idea of monogamy of entanglement. Then we propose a polygamy of entanglement, which express that if a general multipartite state is maximally entangled it is necessarily factorized by any other system.

  15. Implicit Reading in Chinese Pure Alexia

    Science.gov (United States)

    Shan, Chunlei; Zhu, Renjing; Xu, Mingwei; Luo, Benyan; Weng, Xuchu

    2010-01-01

    A number of recent studies have shown that some patients with pure alexia display evidence of implicit access to lexical and semantic information about words that they cannot read explicitly. This phenomenon has not been investigated systematically in Chinese patients. We report here a case study of a Chinese patient who met the criteria for pure…

  16. Pure science and the problem of progress.

    Science.gov (United States)

    Douglas, Heather

    2014-06-01

    How should we understand scientific progress? Kuhn famously discussed science as its own internally driven venture, structured by paradigms. He also famously had a problem describing progress in science, as problem-solving ability failed to provide a clear rubric across paradigm change--paradigm changes tossed out problems as well as solving them. I argue here that much of Kuhn's inability to articulate a clear view of scientific progress stems from his focus on pure science and a neglect of applied science. I trace the history of the distinction between pure and applied science, showing how the distinction came about, the rhetorical uses to which the distinction has been put, and how pure science came to be both more valued by scientists and philosophers. I argue that the distinction between pure and applied science does not stand up to philosophical scrutiny, and that once we relinquish it, we can provide Kuhn with a clear sense of scientific progress. It is not one, though, that will ultimately prove acceptable. For that, societal evaluations of scientific work are needed.

  17. Binomial Squares in Pure Cubic Number Fields

    CERN Document Server

    Lemmermeyer, Franz

    2011-01-01

    Let K = Q(\\omega) with \\omega^3 = m be a pure cubic number field. We show that the elements\\alpha \\in K^\\times whose squares have the form a - \\omega form a group isomorphic to the group of rational points on the elliptic curve E_m: y^2= x^3 - m.

  18. Nigeria Journal of Pure and Applied Physics

    African Journals Online (AJOL)

    Nigeria Journal of Pure and Applied Physics (NJPAP) is a journal dedicated to the ... Variations of surface temparature with solar activity at two stations in the tropics ... Activation energy of psuedobinary alloy of Al-Bi-Se mixed systems · EMAIL ...

  19. Evolution of Pure States into Mixed States

    CERN Document Server

    Liu, J

    1993-01-01

    In the formulation of Banks, Peskin and Susskind, we show that one can construct evolution equations for the quantum mechanical density matrix $\\rho$ with operators which do not commute with hamiltonian which evolve pure states into mixed states, preserve the normalization and positivity of $\\rho$ and conserve energy. Furthermore, it seems to be different from a quantum mechanical system with random sources.

  20. Pure Gravitational Back-Reaction Observables

    CERN Document Server

    Tsamis, N C

    2013-01-01

    After discussing the various issues regarding and requirements on pure quantum gravitational observables in homogeneous-isotropic conditions, we construct a composite operator observable satisfying most of them. We also expand it to first order in the loop counting parameter and suggest it as a physical quantifier of gravitational back-reaction in an initially inflating cosmology.

  1. A fatal case of pure metaphyseal chondroblastoma.

    Science.gov (United States)

    Binesh, Fariba; Moghadam, Reza Nafisi; Abrisham, Jalil

    2013-08-23

    The chondroblastoma (CB) is a rare cartilaginous tumour; it represents less than 1% of all bone tumours. It is mostly localised at the level of the epiphysis of long bones. We report a fatal case of pure metaphyseal CB of the tibia in a 9-year-old boy whose pulmonary metastases developed soon after operative therapy of the primary tumour.

  2. MRI of autosomal dominant pure spastic paraplegia

    DEFF Research Database (Denmark)

    Krabbe, K; Nielsen, J E; Fallentin, E

    1997-01-01

    We examined 16 patients with autosomal dominant pure spastic paraplegia (HSP) and 15 normal controls matched for age and sex using MRI of the brain and spinal cord. Images were assessed qualitatively by two independent radiologists, blinded to the clinical diagnosis. Areas of the brain and corpus...

  3. Exploring the simplest purely baryonic decay processes

    CERN Document Server

    Geng, C Q; Rodrigues, Eduardo

    2016-01-01

    We propose to search for purely baryonic decay processes at the LHCb experiment. In particular, we concentrate on the decay $\\Lambda_b^0\\to p\\bar pn$, which is the simplest purely baryonic decay mode, with solely spin-1/2 baryons involved. We predict its decay branching ratio to be ${\\cal B}(\\Lambda_b^0\\to p\\bar pn)=(2.0^{+0.3}_{-0.2})\\times 10^{-6}$, which is sufficiently large to make the decay mode accessible to LHCb. Though not considered in general, purely baryonic decays could shed light on the puzzle of the baryon number asymmetry in the universe by means of a better understanding of the baryonic nature of our matter world. As such, they constitute a yet unexplored class of decay processes worth investigating. Our study can be extended to the purely baryonic decays of $\\Lambda_b^0\\to p\\bar p \\Lambda$, $\\Lambda_b^0\\to \\Lambda \\bar p\\Lambda$ and $\\Lambda_b^0\\to \\Lambda\\bar \\Lambda\\Lambda$, as well as other similar anti-triplet $b$-baryon decays, such as $\\Xi_b^{0,-}$.

  4. Comparison of hydrogen storage properties of pure Mg and milled pure Mg

    Indian Academy of Sciences (India)

    Myoung Youp Song; Young Jun Kwak; Seong Ho Lee; Hye Ryoung Park

    2014-06-01

    Hydrogen storage properties of pure Mg were studied at 593 K under 12 bar H2. In order to increase the hydriding and dehydriding rates, pure Mg was ground under hydrogen atmosphere (reactive mechanical grinding, RMG) and its hydrogen storage properties were subsequently investigated. Pure Mg absorbed hydrogen very slowly. At the number of cycles () of 1, pure Mg absorbed 0.05 wt% H for 5 min, 0.08 wt% H for 10 min and 0.29 wt% H for 60 min at 593 K under 12 bar H2. Activation was completed at the fifth cycle. At = 6, pure Mg absorbed 1.76 wt% H for 5 min, 2.17 wt% H for 10 min and 3.40 wt% H for 60 min. The activation of pure Mg after RMG was completed at the sixth cycle. At = 7, pure Mg after RMG absorbed 2.57 wt% H for 5 min, 3.21 wt% H for 10 min and 4.15 wt% H for 60 min.

  5. TECHNICAL COORDINATION

    CERN Document Server

    Austin Ball

    The 2008-9 CMS shutdown has reached its final phase. The yoke is closed again and the HFs are being prepared for lifting to beam height. Assuming no last minute problems occur, the detector will be ready for magnetic field tests by the end of June. The commitment of all the teams involved has ensured that an ambitious programme of work, including several tasks unforeseen in November 08, is nevertheless concluding on-time and successfully. All efforts are now being made to be ready for the CRAFT09 exercise. The way to proceed after CRAFT will depend on the LHC re-start schedule (to be clarified around the end of June). Options will be discussed during this CMS week. Shutdown 2008-9 Sub-Detectors As a reminder, the major shutdown activities on the detector components are listed below; details on each point can be found elsewhere in this bulletin. •    Installation and check-out of the Preshower detector on both endcaps •    Mainten...

  6. Technical Status of Foam Insulation Material of External Wall and its Preparation with Sandstone Coal Gangue%外墙泡沫保温材料的技术现状及用砂岩质煤矸石试制

    Institute of Scientific and Technical Information of China (English)

    邢军; 李小庆; 孙晓刚; 邱景平

    2015-01-01

    砂岩质煤矸石和抛光砖泥都是工业固体废弃物,在国家提倡外墙保温材料革新升级和煤矸石资源化利用的背景下,开发煤矸石基外墙泡沫保温材料,既可以实现建筑节能和外墙的安全防火,又可以改善矿区生态环境,减少对宝贵土地资源的占用。在介绍了我国外墙保温材料产业现状和国内关于煤矸石基外墙泡沫保温材料研究现状的基础上,重点分析了试验原料的增塑性和发泡性,并进行了煤矸石基外墙泡沫保温材料的试制。结果表明,以辽宁朝阳矸石山砂岩质煤矸石和辽宁法库某陶瓷厂的抛光砖泥为主要原料,碳化硅和氧化镁为复合造孔剂,硼砂为助熔剂,经陈化—成型—烧结工序,试制出了具有一定外观和性能的煤矸石基外墙泡沫保温材料,说明本试验技术路线是可行的。但要制备满足建筑业要求的、低成本的外墙泡沫保温材料,还需后续进行系统的原料配比和烧结制度优化试验。%Under the background of external wall thermal insulation materials innovation upgrading and coal gangue re-source utilization,as industrial solid wastes,sandstone coal gangue and polishing tile waste are used to develop the external wall insulation foam material,which can achieve construction energy-efficient and fire safety,improve the ecological environment of mining area,and reduce the waste of valuable land resources. Based on the introduction of China's status of external wall insu-lation materials industry and research on coal gangue external wall foam insulation material,the plasticity and foaming of the tested material were analyzed,and the coal gangue exterior wall foam insulation material was prepared. The results show that, coal gangue exterior wall foam insulation material with a certain appearance and property can be produced through the aging, molding,and sintering process, with sandstone coal gangue in Chaoyang City and

  7. Reader-Centered Technical Writing

    Science.gov (United States)

    Narayanan, M.

    2012-12-01

    Technical writing is an essential part of professional communication and in recent years it has shifted from a genre-based approach. Formerly, technical writing primarily focused on generating templates of documents and sometimes it was creating or reproducing traditional forms with minor modifications and updates. Now, technical writing looks at the situations surrounding the need to write. This involves deep thinking about the goals and objectives of the project on hand. Furthermore, one observes that it is very important for any participatory process to have the full support of management. This support needs to be well understood and believed by employees. Professional writing may be very persuasive in some cases. When presented in the appropriate context, technical writing can persuade a company to improve work conditions ensuring employee safety and timely production. However, one must recognize that lot of professional writing still continues to make use of reports and instruction manuals. Normally, technical and professional writing addresses four aspects. Objective: The need for generating a given professionally written technical document and the goals the document is expected to achieve and accomplish. Clientele: The clientele who will utilize the technical document. This may include the people in the organization. This may also include "unintended readers." Customers: The population that may be affected by the content of the technical document generated. This includes the stakeholders who will be influenced. Environment: The background in which the document is created. Also, the nature of the situation that warranted the generation of the document. Swiss Psychologist Jean Piaget's view of Learning focuses on three aspects. The author likes to extend Jean Piaget's ideas to students, who are asked to prepare and submit Reader-Centered Technical Writing reports and exercises. Assimilation: Writers may benefit specifically, by assimilating a new object into

  8. Isolating highly pure rat spermatogonial stem cells in culture.

    Science.gov (United States)

    Hamra, F Kent; Chapman, Karen M; Wu, Zhuoru; Garbers, David L

    2008-01-01

    Methods are detailed for isolating highly pure populations of spermatogonial stem cells from primary cultures of testis cells prepared from 22- to 24-day-old rats. The procedure is based on the principle that testicular somatic cells bind tightly to plastic and collagen matrices when cultured in serum-containing medium, whereas spermatogonia and spermatocytes do not bind to plastic or collagen when cultured in serum-containing medium. The collagen-non-binding testis cells obtained using these procedures are thus approx. 97% pure spermatogenic cells. Stem spermatogonia are then easily isolated from the purified spermatogenic population during a short incubation step in culture on laminin matrix. The spermatogenic cells that bind to laminin are more than 90% undifferentiated, type A spermatogonia and are greatly enriched in genetically modifiable stem cells that can develop into functional spermatozoa. This method does not require flow cytometry and can also be applied to obtain enriched cultures of mouse spermatogonial stem cells. The isolated spermatogonia provide a highly potent and effective source of stem cells that have been used to initiate in vitro and in vivo culture studies on spermatogenesis.

  9. Surface nanocrystallization of commercial pure titanium by shot peening

    Institute of Scientific and Technical Information of China (English)

    MA Guang; LUO Yu; CHEN Chun-huan; REN Rui-ming; WU Wei; LI Zhi-qiang; ZENG Yan-song

    2004-01-01

    The surface nanostructures of commercial pure titanium was realized by the modified shot peening equipment commonly used in industry through the special treatment process. The results show that high-energy-shot-peening(HESP) commonly used to prepare nanostructured surface layers can be achieved by the increase of pill size, pill speed, and treatment time in the commercial shot peening equipment. XRD, SEM and TEM were used to characterize the surface layer microstructure of treated specimens. The analytic results show that the main deformation mode of commercial pure Ti is twinning. At the beginning of deformation, the dislocations are formed and twins occur within or on plane, then twins in intersection plane appear, and at last the twin characteristics disappear in the surface layer after longer treatment time. The deformation layer depth increases with treatment time in a certain period when the pill size and speed are unchanged. And in the severe plastic deformation (SPD) layer in which the twins are not identified easily by using SEM, the nanocrystalline microstructures are found under TEM. The finest grain size in the surface layer is about 40 nm, and the depth of nanostructured layers is over 60 μm. The microhardness of the nanostructured surface layers is enhanced significantly after shot peening compared with that of the initial simple.

  10. A study of purely astrometric selection of extragalactic point sources

    CERN Document Server

    Heintz, Kasper E; Høg, Erik

    2015-01-01

    Selection of extragalactic point sources, e.g. QSOs, is often hampered by significant selection effects causing existing samples to have rather complex selection functions. We explore whether a purely astrometric selection of extragalactic point sources, e.g. QSOs, is feasible with the ongoing Gaia mission. Such a selection would be interesting as it would be unbiased in terms of colours of the targets and hence would allow selection also with colours in the stellar sequence. We have analyzed a total of 18 representative regions of the sky by using \\textit{GUMS}, the simulator prepared for ESAs Gaia mission, both in the range of $12\\le G \\le 20$ mag and $12\\le G \\le 18$ mag. For each region we determine the density of apparently stationary stellar sources, i.e. sources for which Gaia cannot measure a significant proper motion. The density is contrasted with the density of extragalactic point sources, e.g. QSOs, in order to establish in which celestial directions a pure astrometric selection is feasible. When ...

  11. Intravesical Instillation in Pure Line LEW Rats and Nude Mice

    Institute of Scientific and Technical Information of China (English)

    ZHOU Jie; XIE Shusheng; GUO Xiaoyun; MO Zengnan

    2007-01-01

    In order to study bladder intravesical instillation methods in pure line LEW rats and nude mice, female LEW rats and nude mice aged 2 to 4 weeks were sacrificed. Their urethra and bladder were observed under anatomical microscopy. A trochar was prepared according to the outline and angle of the urethra. Ink was poured into female rats and nude mice bladder though urethra. Filling and staining of bladder were observed and evaluated under anatomical microscopy. Status and urethral injury of rats and mice were observed. The results showed that urethra anatomic structure of rats and nude mice was different from that of human urethra. When bladder was filled with ink and became blue, liquid was not seen to leak out. The success rate of intubation was high (100%). Living activities of animals weren't influenced by intravesical instillation. It was concluded that bladder irrigation might be a kind of valid and utilizable method in pure line rat and nude mouse empirical study. The model may be a more effective tool for study of bladder tumor.

  12. Applying Chosen Teaching Methods in Technical Education

    Directory of Open Access Journals (Sweden)

    Henryk Noga

    2014-10-01

    Full Text Available Education, also the technical one, is supposed to prepare students for adult life, not only by providing them with ready-made knowledge, but first of all by equipping students with an ability to learn, gather and select information. Active methods influence students’ senses, allowing for a better understanding and remembering the subject matter. The study shows some didactic methods used in technical education. The attention has been aid to inventive, exploratory, and inventive-exploratory methods.

  13. Black Hole Attractors and Pure Spinors

    Energy Technology Data Exchange (ETDEWEB)

    Hsu, Jonathan P.; Maloney, Alexander; Tomasiello, Alessandro

    2006-02-21

    We construct black hole attractor solutions for a wide class of N = 2 compactifications. The analysis is carried out in ten dimensions and makes crucial use of pure spinor techniques. This formalism can accommodate non-Kaehler manifolds as well as compactifications with flux, in addition to the usual Calabi-Yau case. At the attractor point, the charges fix the moduli according to {Sigma}f{sub k} = Im(C{Phi}), where {Phi} is a pure spinor of odd (even) chirality in IIB (A). For IIB on a Calabi-Yau, {Phi} = {Omega} and the equation reduces to the usual one. Methods in generalized complex geometry can be used to study solutions to the attractor equation.

  14. Performance of broiler fed pure glycerine

    Directory of Open Access Journals (Sweden)

    Dássia Daiane Oliveira

    2014-02-01

    Full Text Available Two experiments evaluated the pure glycerin in broiler chicken diets. Experiment 1 was a metabolism test using total feces sampling method with 96 male chickens aging from 17 to 25 d when animals were fed on two treatments: diet1 = no glycerin and diet2 = 60g/kg of glycerin. The apparent metabolized energy measured 4015 kcal/kg and the apparent metabolized corrected for nitrogen balance was 3911 kcal/kg. Experiment 2 evaluated weight gains, feed intake and feed conversion in 480 chicks at 6, 20 and 34 d old fed on diets with 0, 40, 80 and 120 g/kg of glycerin. The results indicate that pure glycerin in chicken diets, as a source of energy must take into consideration the age of the animals and it may be added up to 120 g/kg, from 20 to 41 d of age.

  15. Pure and doped boron nitride nanotubes

    Directory of Open Access Journals (Sweden)

    M. Terrones

    2007-05-01

    Full Text Available More than ten years ago, it was suggested theoretically that boron nitride (BN nanotubes could be produced. Soon after, various reports on their synthesis appeared and a new area of nanotube science was born. This review aims to cover the latest advances related to the synthesis of BN nanotubes. We show that these tubes can now be produced in larger amounts and, in particular, that the chemistry of BN tubes appears to be very important to the production of reinforced composites with insulating characteristics. From the theoretical standpoint, we also show that (BN-C heteronanotubes could have important implications for nanoelectronics. We believe that BN nanotubes (pure and doped could be used in the fabrication of novel devices in which pure carbon nanotubes do not perform very efficiently.

  16. The pure relationship and below replacement fertility

    Directory of Open Access Journals (Sweden)

    David R. Hall

    2003-12-01

    interest from demographers. Despite the fact that researchers have extensively modeled recent demographic changes such as skyrocketing divorce rates, rising common-law union formation, delayed childbearing, and the decline to belowreplacement fertility levels, our understanding of the causes of these trends, and the possible connections between them remains theoretically fragmented and incomplete. The goal of this paper is to advance our understanding in this area by exploring the insights on modern family formation of prominent sociologist Anthony Giddens. Specifically, this study examines whether Giddens’ “pure relationship” concept can shed light on the trend toward very low fertility. The results of this inquiry suggest that couples in both marriages and common-law unions who conform to key aspects of Giddens pure relationship are more likely to have uncertain or below-replacement fertility intentions, and less likely to embrace above-replacement fertility goals.

  17. Compact objects in pure Lovelock theory

    CERN Document Server

    Dadhich, Naresh; Chilambwe, Brian

    2016-01-01

    For static fluid interiors of compact objects in pure Lovelock gravity (involving ony one $N$th order term in the equation) we establish similarity in solutions for the critical odd and even $d=2N+1, 2N+2$ dimensions. It turns out that in critical odd $d=2N+1$ dimensions, there can exist no bound distribution with a finite radius, while in critical even $d=2N+2$ dimensions, all solutions have similar behavior. For exhibition of similarity we would compare star solutions for $N =1, 2$ in $d=4$ Einstein and $d=6$ in Gauss-Bonnet theory respectively. We also obtain the pure Lovelock analogue of the Finch-Skea model.

  18. Effective pure states for bulk quantum computation

    Energy Technology Data Exchange (ETDEWEB)

    Knill, E.; Chuang, I.; Laflamme, R.

    1997-11-01

    In bulk quantum computation one can manipulate a large number of indistinguishable quantum computers by parallel unitary operations and measure expectation values of certain observables with limited sensitivity. The initial state of each computer in the ensemble is known but not pure. Methods for obtaining effective pure input states by a series of manipulations have been described by Gershenfeld and Chuang (logical labeling) and Corey et al. (spatial averaging) for the case of quantum computation with nuclear magnetic resonance. We give a different technique called temporal averaging. This method is based on classical randomization, requires no ancilla qubits and can be implemented in nuclear magnetic resonance without using gradient fields. We introduce several temporal averaging algorithms suitable for both high temperature and low temperature bulk quantum computing and analyze the signal to noise behavior of each.

  19. Development of Soybean Highly Pure Powdered Lecithin

    Institute of Scientific and Technical Information of China (English)

    Li Guihua; Gu Keren; Liang Shaohua

    2002-01-01

    This project makes use ofCondensed Soybean Phospholipids (CSP) toproduce highly pure powdered soybean lecithin.In the production technology, the first step is tode-oil by continuous y delivered mater al, higheffective mixing CSP with acetone and circularextraction. The second step is to centrifugallyseparate the lecithin miscellaneous liquid intomiscellaneous oil and solid-state lecithin withacetone. Then the mixing oil can be separatedinto crude oil and acetone by vaporization andcondensation. If the acetone contains too muchwater, it should be rectified for use circularly.Solid state lecithin with acetone can be madeinto highly pure powdered soybean lecithin(acetone insoluble matter >95% ) under thefollowing conditions: vacuum 750mmHg,temperature 60℃, time 20 minutes. Theproduction not only reaches the domestic andoversea quality index, but also has favorablehydrophilic property, which makes it becomenatural food additive and sanitarian nurture.

  20. Photoionizaton of Pure and Doped Helium Nanodroplets

    CERN Document Server

    Mudrich, M

    2014-01-01

    Helium nanodroplets, commonly regarded as the "nearly ideal spectroscopic matrix", are being actively studied for more than two decades now. While they mostly serve as cold, weakly perturbing and transparent medium for high-resolution spectroscopy of embedded molecules, their intrinsic quantum properties such as microscopic superfluidity still are subject-matter of current research. This article reviews recent work on pure and doped He nanodroplets using PI spectroscopy, an approach which has greatly advanced in the past years. While the notion of the ideal spectroscopic matrix mostly no longer holds in this context, photoionization techniques provide detailed insights into the photo-physical properties of pure and doped He nanodroplets and their relaxation dynamics following electronic excitation. Exploiting nowadays available high laser fields, even highly ionized states of matter on the nanoscale can be formed. Our particular focus lies on recent experimental progress including fs time-resolved spectroscop...

  1. How Pure Components Control Polymer Blend Miscibility

    Science.gov (United States)

    White, Ronald; Lipson, Jane; Higgins, Julia

    2012-02-01

    We present insight into some intriguing relationships revealed by our recent studies of polymer mixture miscibility. Applying our simple lattice-based equation of state, we discuss some of the patterns observed over a sample of experimental blends. We focus on the question of how much key information can one determine from a knowledge of just the pure components only, and further, on the role of separate enthalpic and entropic contributions to the miscibility behavior. One interesting correlation connects the value of the difference in pure component energetic parameters with that of the mixed segment interactions, suggesting new possibilities for predictive modeling. We also show how in some cases these two parameter groupings act as separate controls determining the entropy and enthalpy of mixing. Also discussed are the different patterns exhibited for UCST-type and LCST-type blends, these being revealed in some cases by simple examination of the underlying microscopic parameters.

  2. Pure Sensory Stroke due to Lenticulocapsular Hemorrhage

    Institute of Scientific and Technical Information of China (English)

    杨益阶; 王国瑾; 潘松青

    2003-01-01

    @@ Pure sensory stroke (PSS) caused by lenticulo-capsular hemorrhage is rare. In this article, we re-ported 4 patients with PSS due to lenticulocapsularhemorrhage, including 3 men and 1 woman (mean age,58 years; range, 54 to 65 years), whose lesions couldbe identified by head computed tomographic (CT)scan and clinical findings correlated with the radio-logical lesions. All patients except 1 had hyperten-sion.

  3. Acquired pure red cell aplasia in children

    Directory of Open Access Journals (Sweden)

    Sujata R Dafale

    2012-01-01

    Full Text Available Acquired Pure Red Cell Aplasia (PRCA is a rare occurrence in children.This is a case of an eight year old girl child who developed acquired PRCA secondary to long term intake of sodium Valproate. This case is reported to review the causes of PRCA in children and to reconsider the use of drugs of longer duration in children and adults.

  4. Pure waterjet drilling of articular bone

    OpenAIRE

    Biskup, Christian; Dunnen, Steven den; Kraaij, Gert; Kerkhoffs, Gino M. M. J.; Tuijthof, Gabrielle J. M.

    2015-01-01

    The clinical application of waterjet technology for machining tough human tissues, such as articular bone, has advantages, as it produces clean sharp cuts without tissue heating. Additionally, water supply is possible via flexible tubing, which enables minimally invasive surgical access. This pilot study investigates whether drilling bony tissue with pure waterjets is feasible. Water pressures between 20 and 120 MPa with an orifice of 0.6 mm were used to create waterjets to drill blind boring...

  5. Les Problemes de l'alexie pure (Problems of Pure Alexia)

    Science.gov (United States)

    Kremin, Helgard

    1976-01-01

    This article reviews studies done on alexia and describes experiments designed to distinguish qualitatively between pure alexia (marked by the absence of oral and written problems) and other forms of alexia. (Text is in French.) (CLK)

  6. Global empirical potentials from purely rotational measurements

    CERN Document Server

    Dattani, Nikesh S; Sun, Ming; Johnson, Erin R; Roy, Robert J Le; Ziurys, Lucy M

    2014-01-01

    The recent advent of chirped-pulse FTMW technology has created a plethora of pure rotational spectra for molecules for which no vibrational information is known. The growing number of such spectra demands a way to build empirical potential energy surfaces for molecules, without relying on any vibrational measurements. Using ZnO as an example, we demonstrate a powerful technique for efficiently accomplishing this. We first measure eight new ultra-high precision ($\\pm2$ kHz) pure rotational transitions in the $X$-state of ZnO. Combining them with previous high-precision ($\\pm50$ kHz) pure rotational measurements of different transitions in the same system, we have data that spans the bottom 10\\% of the well. Despite not using any vibrational information, our empirical potentials are able to determine the size of the vibrational spacings and bond lengths, with precisions that are more than three and two orders of magnitude greater, respectively, than the most precise empirical values previously known, and the mo...

  7. On constructing purely affine theories with matter

    Science.gov (United States)

    Cervantes-Cota, Jorge L.; Liebscher, D.-E.

    2016-08-01

    We explore ways to obtain the very existence of a space-time metric from an action principle that does not refer to it a priori. Although there are reasons to believe that only a non-local theory can viably achieve this goal, we investigate here local theories that start with Schrödinger's purely affine theory (Schrödinger in Space-time structure. Cambridge UP, Cambridge, 1950), where he gave reasons to set the metric proportional to the Ricci curvature aposteriori. When we leave the context of unified field theory, and we couple the non-gravitational matter using some weak equivalence principle, we can show that the propagation of shock waves does not define a lightcone when the purely affine theory is local and avoids the explicit use of the Ricci tensor in realizing the weak equivalence principle. When the Ricci tensor is substituted for the metric, the equations seem to have only a very limited set of solutions. This backs the conviction that viable purely affine theories have to be non-local.

  8. On constructing purely affine theories with matter

    CERN Document Server

    Cervantes-Cota, Jorge L

    2016-01-01

    We explore ways to obtain the very existence of a space-time metric from an action principle that does not refer to it a priori. Although there are reasons to believe that only a non-local theory can viably achieve this goal, we investigate here local theories that start with Schroedinger's purely affine theory [21], where he gave reasons to set the metric proportional to the Ricci curvature aposteriori. When we leave the context of unified field theory, and we couple the non-gravitational matter using some weak equivalence principle, we can show that the propagation of shock waves does not define a lightcone when the purely affine theory is local and avoids the explicit use of the Ricci tensor in realizing the weak equivalence principle. When the Ricci tensor is substituted for the metric, the equations seem to have only a very limited set of solutions. This backs the conviction that viable purely affine theories have to be non-local.

  9. Needleless Electrospinning of Pure and Blended Chitosan

    Science.gov (United States)

    Grimmelsmann, Nils; Homburg, Sarah Vanessa; Ehrmann, Andrea

    2017-08-01

    Chitosan is a biopolymer with bactericidal, fungicidal, hemostatic and other interesting properties. It can be used, e.g., in medical products, as a filter medium, in biotechnological purposes etc. For these possible applications, nanofiber mats with a large inner surface will be most efficient. This is why in a recent project, the electrospinning properties of pure chitosan as well as chitosan blended with poly(ethylene oxide) were investigated. Using a needleless nanospinning process, the technology under examination can be upscaled from lab to industrial scale, enabling direct transfer of the gained experiences to the intended application.

  10. Pure spinor equations to lift gauged supergravity

    Energy Technology Data Exchange (ETDEWEB)

    Rosa, Dario; Tomasiello, Alessandro [Dipartimento di Fisica, Università di Milano-Bicocca, and INFN, sezione di Milano-Bicocca,I-20126 Milano (Italy)

    2014-01-31

    We rewrite the equations for ten-dimensional supersymmetry in a way formally identical to a necessary and sufficient G-structure system in N=2 gauged supergravity, where all four-dimensional quantities are replaced by combinations of pure spinors and fluxes in the internal space. This provides a way to look for lifts of BPS solutions without having to reduce or even rewrite the ten-dimensional action. In particular this avoids the problem of consistent truncation, and the introduction of unphysical gravitino multiplets.

  11. Are all maximally entangled states pure?

    Science.gov (United States)

    Cavalcanti, D.; Brandão, F. G. S. L.; Terra Cunha, M. O.

    2005-10-01

    We study if all maximally entangled states are pure through several entanglement monotones. In the bipartite case, we find that the same conditions which lead to the uniqueness of the entropy of entanglement as a measure of entanglement exclude the existence of maximally mixed entangled states. In the multipartite scenario, our conclusions allow us to generalize the idea of the monogamy of entanglement: we establish the polygamy of entanglement, expressing that if a general state is maximally entangled with respect to some kind of multipartite entanglement, then it is necessarily factorized of any other system.

  12. Purely cubic action for string field theory

    Science.gov (United States)

    Horowitz, G. T.; Lykken, J.; Rohm, R.; Strominger, A.

    1986-01-01

    It is shown that Witten's (1986) open-bosonic-string field-theory action and a closed-string analog can be written as a purely cubic interaction term. The conventional form of the action arises by expansion around particular solutions of the classical equations of motion. The explicit background dependence of the conventional action via the Becchi-Rouet-Stora-Tyutin operator is eliminated in the cubic formulation. A closed-form expression is found for the full nonlinear gauge-transformation law.

  13. Quantum correlations support probabilistic pure state cloning

    Energy Technology Data Exchange (ETDEWEB)

    Roa, Luis, E-mail: lroa@udec.cl [Departamento de Física, Universidad de Concepción, Casilla 160-C, Concepción (Chile); Alid-Vaccarezza, M.; Jara-Figueroa, C. [Departamento de Física, Universidad de Concepción, Casilla 160-C, Concepción (Chile); Klimov, A.B. [Departamento de Física, Universidad de Guadalajara, Avenida Revolución 1500, 44420 Guadalajara, Jalisco (Mexico)

    2014-02-01

    The probabilistic scheme for making two copies of two nonorthogonal pure states requires two auxiliary systems, one for copying and one for attempting to project onto the suitable subspace. The process is performed by means of a unitary-reduction scheme which allows having a success probability of cloning different from zero. The scheme becomes optimal when the probability of success is maximized. In this case, a bipartite state remains as a free degree which does not affect the probability. We find bipartite states for which the unitarity does not introduce entanglement, but does introduce quantum discord between some involved subsystems.

  14. Pure and Public, Popular and personal

    DEFF Research Database (Denmark)

    Eriksson, Birgit

    2013-01-01

    In the article I reexamine the traditional aesthetical and political critiques of popular culture and reevaluate the social and communicative potential of bestselling cultural artifacts such as highly popular television series. First, I sketch the alleged aesthetic and social problems of popular...... and the exclusions of the public sphere. I argue that the ideals of a pure aesthetic and a public sphere neglect issues that are crucial to the type of commonality at stake in popular cultural artifacts: personal issues, social conflicts, and what is pleasurable to the senses or has to do with emotions. Third, I...

  15. Pure seminoma: A review and update

    Science.gov (United States)

    2011-01-01

    Pure seminoma is a rare pathology of the young adult, often discovered in the early stages. Its prognosis is generally excellent and many therapeutic options are available, especially in stage I tumors. High cure rates can be achieved in several ways: standard treatment with radiotherapy is challenged by surveillance and chemotherapy. Toxicity issues and the patients' preferences should be considered when management decisions are made. This paper describes firstly the management of primary seminoma and its nodal involvement and, secondly, the various therapeutic options according to stage. PMID:21819630

  16. [XX 'pure' gonadal dysgenesis and XYY syndrome].

    Science.gov (United States)

    Itoh, Naoki; Tsukamoto, Taiji

    2004-02-01

    XX 'pure' gonadal dysgenesis is a disease related to Turner's syndrome. Patients of this disease are characterized by normal female external genitalia, bilateral streak gonads, amenorrhea and sexual infantilism. Recently, it has been reported that point mutations of the FSH receptor gene may be one of cause of this disease. The relationship between criminal behavior and XYY syndrome is still controversial. Increased incidence of disomic sperm in 47,XYY males has been reported by fluorescent in situ hybridization(FISH). Genetic counseling should be done when they undergo intracytoplasmic sperm injection.

  17. Synthesis of pure Portland cement phases

    DEFF Research Database (Denmark)

    Wesselsky, Andreas; Jensen, Ole Mejlhede

    2009-01-01

    Pure phases commonly found in Portland cement clinkers are often used to test cement hydration behaviour in simplified experimental conditions. The synthesis of these phases is covered in this paper, starting with a description of phase relations and possible polymorphs of the four main phases...... in Portland cement, i.e. tricalcium silicate, dicalcium silicate, tricalcium aluminate and tetracalcium alumino ferrite. Details of the The process of solid state synthesis are is described in general including practical advice on equipment and techniques. Finally In addition, some exemplary mix compositions...

  18. Powder injection molding of pure titanium

    Institute of Scientific and Technical Information of China (English)

    GUO Shibo; DUAN Bohua; HE Xinbo; QU Xuanhui

    2009-01-01

    An improved wax-based binder was developed for powder injection molding of pure titanium. A critical powder loading of 69 vol.% and a pseudo-plastic flow behavior were obtained by the feedstock based on the binder. The injection molding, debinding, and sintering process were studied. An ideal control of carbon and oxygen contents was achieved by thermal debinding in vacuum atmosphere (10-3 Pa). The mechanical properties of as-sintered specimens were less than those of titanium made by the conventional press-sintering process. Good shape retention and ±0.04 mm dimension deviation were achieved.

  19. Study on pure silica core optical fibers

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    An optimal refractive index profile of pure silica core optical fiber (PSCF) was designed, in combination with the characters of the modified chemical vapor deposition (MCVD) process. Techniques of preform fabrication by a new furnace round heating MCVD process and fiber drawing process were reviewed. Difficulties in doping fluorine in silica, widening the depressed-index cladding and maintaining the index of fiber core were discussed. Methods used to overcome these difficulties were given at the same time. Additionally, the optimal refractive index profiles of PSCF were presented.

  20. Purely cubic action for string field theory

    Science.gov (United States)

    Horowitz, G. T.; Lykken, J.; Rohm, R.; Strominger, A.

    1986-01-01

    It is shown that Witten's (1986) open-bosonic-string field-theory action and a closed-string analog can be written as a purely cubic interaction term. The conventional form of the action arises by expansion around particular solutions of the classical equations of motion. The explicit background dependence of the conventional action via the Becchi-Rouet-Stora-Tyutin operator is eliminated in the cubic formulation. A closed-form expression is found for the full nonlinear gauge-transformation law.

  1. The Pure Virtual Braid Group Is Quadratic

    CERN Document Server

    Lee, Peter

    2011-01-01

    If an augmented algebra K over Q is filtered by powers of its augmentation ideal I, the associated graded algebra gr_I K need not in general be quadratic: although it is generated in degree 1, its relations may not be generated by homogeneous relations of degree 2. In this paper we give a criterion which is equivalent to gr_I K being quadratic. We apply this criterion to the group algebra of the pure virtual braid group (also known as the quasi-triangular group), and show that the corresponding associated graded algebra is quadratic.

  2. Purely Four-dimensional Viable Anomaly Mediation

    CERN Document Server

    Harnik, R; Pierce, A T; Harnik, Roni; Murayama, Hitoshi; Pierce, Aaron

    2002-01-01

    Anomaly mediation of supersymmetry breaking solves the supersymmetric flavor problem thanks to its ultraviolet-insensitivity. However, it suffers from two problems: sleptons have negative masses-squared, and there are likely bulk moduli that spoil the framework. Here, we present the first fully ultraviolet-insensitive model of anomaly mediation with positive slepton masses-squared in a purely four-dimensional framework. Our model is based on the additional D-term contributions to the sparticle masses of Arkani-Hamed, Kaplan, HM, and Nomura, and the conformal sequestering mechanism of Luty and Sundrum.

  3. Measure and integral with purely ordinal scales

    CERN Document Server

    Denneberg, Dieter

    2008-01-01

    We develop a purely ordinal model for aggregation functionals for lattice valued functions, comprising as special cases quantiles, the Ky Fan metric and the Sugeno integral. For modeling findings of psychological experiments like the reflection effect in decision behaviour under risk or uncertainty, we introduce reflection lattices. These are complete linear lattices endowed with an order reversing bijection like the reflection at 0 on the real interval $[-1,1]$. Mathematically we investigate the lattice of non-void intervals in a complete linear lattice, then the class of monotone interval-valued functions and their inner product.

  4. Electrostatic Precipitation in Nearly Pure Gaseous Nitrogen

    Science.gov (United States)

    Buhler, Charles; Calle, Carlos; Clements, Sid; Cox, Bobby; Ritz, Mindy

    2008-01-01

    Electrostatic precipitation was performed in a nearly pure gaseous nitrogen system as a possible remedy for black dust contaminant from high pressure 6000 psi lines at the NASA Kennedy Space Center. The results of a prototype electrostatic precipitator that was built and tested using nitrogen gas at standard atmospheric pressures is presented. High voltage pulsed waveforms are generated using a rotating spark gap system at 30 Hz. A unique dust delivery system utilizing the Venturi effect was devised that supplies a given amount of dust per unit time for testing purposes.

  5. Defective spatial imagery with pure Gerstmann's syndrome.

    Science.gov (United States)

    Carota, Antonio; Di Pietro, Marie; Ptak, Radek; Poglia, Davide; Schnider, Armin

    2004-01-01

    Gerstmann's syndrome comprises finger agnosia, peripheral agraphia, anarithmetia, and right-left confusion. We here report a single-case study of an 85-year-old ambidextrous man who exhibited pure Gerstmann's syndrome (i.e., without aphasia) 10 weeks after a stroke involving the angular gyrus in the left parietal lobe. We hypothesize that, in this case, the main cognitive denominator of Gerstmann's tetrad was a severe dysfunction in mental rotation and translation. This report provides further evidence for the spatial nature of Gerstmann's syndrome.

  6. On the importance of PURE - Public Understanding of Renewable Energy

    Energy Technology Data Exchange (ETDEWEB)

    Broman, Lars; Kandpal, Tara C.

    2013-09-15

    Public understanding of science (PUS) is a central concept among science communicators. Public understanding of renewable energy (PURE) is proposed as an important sub-concept of PUS. The aim of this paper is to interest and invite renewable energy scientists to join a PURE research project. Four separate important questions for a PURE research project can be identified: (A) Is PURE important? (B) Which issues of PURE are the most important ones, according to renewable energy scientists? (C) What understanding of renewable energy has the general public today, worldwide? (D) How to achieve PURE?.

  7. The pure relationship and below replacement fertility

    Directory of Open Access Journals (Sweden)

    Hall, David R.

    2003-01-01

    Full Text Available Of the many changes which have characterized the second demographic transition, shifts in fertility and union formation have attracted a great deal of interest from demographers. Despite the fact that researchers have extensively modeled recent demographic changes such as skyrocketing divorce rates, rising common-law union formation, delayed childbearing, and the decline to below-replacement fertility levels, our understanding of the causes of these trends, and the possible connections between them remains theoretically fragmented and incomplete. The goal of this paper is to advance our understanding in this area by exploring the insights on modern family formation of prominent sociologist Anthony Giddens. Specifically, this study examines whether Giddens' "pure relationship" concept can shed light on the trend toward very low fertility. The results of this inquiry suggest that couples in both marriages and common-law unions who conform to key aspects of Giddens pure relationship are morel likely to have uncertain or below-replacement fertility intentions, and less likely to embrace above-replacement fertility goals.

  8. (Not so) pure Lovelock Kasner metrics

    CERN Document Server

    Camanho, Xián O; Molina, Alfred

    2016-01-01

    The gravitational interaction is expected to be modified for very short distances. This is particularly important in situations in which the curvature of spacetime is large in general, such as close to the initial cosmological singularity. The gravitational dynamics is then captured by the higher curvature terms in the action, making it difficult to reliably extrapolate any prediction of general relativity. In this note we review pure Lovelock equations for Kasner-type metrics. These equations correspond to a single $N$th order Lovelock term in the action in $d=2N+1,\\,2N+2$ dimensions, and they capture the relevant gravitational dynamics when aproaching the big-bang singularity within the Lovelock family of theories. These are classified in several isotropy types. Some of these families correspond to degenerate classes of solutions, such that their dynamics is not completely determined by the equations of pure Lovelock gravity. Instead, these Kasner solutions become sensitive to the subleading terms in the Lo...

  9. LHC Signals of Pure Gravity Mediation

    Directory of Open Access Journals (Sweden)

    Feldstein Brian

    2013-05-01

    Full Text Available Evidence is mounting that natural supersymmetry at the weak scale is not realized in nature. This evidence comes from collider searches, a lack of new flavor changing neutral current effects, and now also the size of the measured Higgs mass. On the other hand, string theory suggests that supersymmetry might be present at some energy scale, and gauge coupling unification and dark matter imply that that energy scale may be relatively low. The simplest model to address all of these hints is arguably “pure gravity mediation”, in which the scalar superpartner masses are taken to be perhaps 100 TeV, with gauginos automatically acquiring loop factor suppressed masses of order TeV. The gauginos might then be the only superpartners accessible to the LHC. Unification and LSP dark matter are maintained (with a wino LSP at the cost of a 10−5 or 10−6 fine tuning. Here I will discuss the structure and LHC phenomenology of pure gravity mediation.

  10. MRI of autosomal dominant pure spastic paraplegia

    Energy Technology Data Exchange (ETDEWEB)

    Krabbe, K.; Fallentin, E.; Herning, M. [Danish Research Center of Magnetic Resonance, Hvidovre Hospital, Kettegaard alle 30, DK-2650 Hvidovre (Denmark); Nielsen, J.E.; Fenger, K. [Institute of Medical Biochemistry and Genetics, Laboratory of Medical Genetics, Section of Neurogenetics, University of Copenhagen (Denmark)

    1997-10-01

    We examined 16 patients with autosomal dominant pure spastic paraplegia (HSP) and 15 normal controls matched for age and sex using MRI of the brain and spinal cord. Images were assessed qualitatively by two independent radiologists, blinded to the clinical diagnosis. Areas of the brain and corpus callosum on one midsagittal slice and the area of the brain on one axial slice were measured and a ``corpus-callosum index`` expressing the size of the corpus callosum relative to that of the brain was calculated. Cross-sectional areas and anteroposterior and transverse diameters of the spinal cord at the levels of C 2, C 5, T 3, T 6, T 9 and T 11 were measured. No significant differences between patients and controls were found on qualitative evaluation of the images. The patients had a significantly smaller corpus callosum and ``corpus-callosum index`` than controls. This finding, not reported previously, might indicate that the disease process in pure HSP is not confined to the spinal cord. The anteroposterior diameters of the spinal cord at T 3 and T 9 were significantly smaller in patients than in controls. This might correspond to the degeneration of the pyramidal tracts and the dorsal columns described at neuropathological examination. (orig.). With 1 fig., 3 tabs.

  11. Development of Soybean Highly Pure Powdered Lecithin

    Institute of Scientific and Technical Information of China (English)

    LiGuihua; GuKeren; LiangShaohua

    2002-01-01

    This project makes use of Condensed Soybean Phospholipids(CSP)to produce highly pure powdered soybean lecithin.In the production technology,the first step is to de-oil by continuously delivered material,high effective mixing CSP with acetone and circular extraction.The second step is to centrifugally separate the lecithin miscellaneous liquid into miscellaneous oil and solid-state lecithin with acetone.Then the mixing oil can be separated into crude oil and acetone by vaporization and condensation.If the acetone contains too much water,it shoud be rectified for use circularly.Solid state lecithin with acetone can be made into highly pure powdered soybean lecithin (acetone insoluble matter >95%)under the following conditions:vacuum 750mmHg,temperature 60℃,time 20 minutes.The production not only reaches the domestic and oversea quality index,but also has favorable hydrophilic property,which makes it become natural food additive and sanitarian nurture.

  12. Tribological and Impact Fatigue Behaviors of Pure Titanium Treated by Plasma Ni Alloying

    Institute of Scientific and Technical Information of China (English)

    WANG Zhenxia; HE Zhiyong; WANG Yingqin; LIU Xiaoping; TANG Bin

    2012-01-01

    Ni modified layer is prepared on the surface of pure titanium by plasma surface alloying technique.Surface appearance,micro-structure morphology,composition distribution,phase structure and microhardness of Ni modified layer are analyzed.Tribological performance and fatigue behaviors of Ni modified layer of pure titanium are observed using Pin-on-disc tribometer and repeated impact test.The results indicate that the surface mean Ni concentration of Ni modified layer is nearly 18% which is composed of TiNi,Ti2Ni and Ti phase.The maximum surface microhardness of Ni modified layer is approximately 580 HV which is almost two-fold of the hardness of the substrate.The wear resistance of Ni modified layer is improved obviously.The wear mechanism of Ni modified layer shows slight abrasion wearing,while pure titanium is abrasion and adhesion wearing.Ni modified layer presents better impact fatigue strength.

  13. Finding rare objects and building pure samples: Probabilistic quasar classification from low resolution Gaia spectra

    CERN Document Server

    Bailer-Jones, C A L; Tiede, C; Sordo, R; Vallenari, A

    2008-01-01

    We develop and demonstrate a probabilistic method for classifying rare objects in surveys with the particular goal of building very pure samples. It works by modifying the output probabilities from a classifier so as to accommodate our expectation (priors) concerning the relative frequencies of different classes of objects. We demonstrate our method using the Discrete Source Classifier, a supervised classifier currently based on Support Vector Machines, which we are developing in preparation for the Gaia data analysis. DSC classifies objects using their very low resolution optical spectra. We look in detail at the problem of quasar classification, because identification of a pure quasar sample is necessary to define the Gaia astrometric reference frame. By varying a posterior probability threshold in DSC we can trade off sample completeness and contamination. We show, using our simulated data, that it is possible to achieve a pure sample of quasars (upper limit on contamination of 1 in 40,000) with a complete...

  14. Infrared spectra, Raman laser, XRD, DSC/TGA and SEM investigations on the preparations of selenium metal, (Sb2O3, Ga2O3, SnO and HgO) oxides and lead carbonate with pure grade using acetamide precursors

    Indian Academy of Sciences (India)

    Moamen S Refat; Khaled M Elsabawy

    2011-07-01

    Ga2O3, Se metal, SnO, Sb2O3, HgO and PbCO3 are formed upon the reaction of acetamide aqueous solutions with Ga(NO3)3, SeO2, SnCl2, SbCl3, HgCl2 and Pb(NO3)2, respectively, at 90°C. Different amorphous or crystalline phases can be obtained depending upon the experimental conditions (molar ratios, metal salts and temperature). The chemical mechanisms for the formations of this metal, oxides or carbonate are discussed and the X-ray diffraction, scanning electron microscopy (SEM) and atomic force microscope (AFM) are described. The type of metal ions plays an important role in the decomposition of acetamide, leading to the formation of solid stable (metal, oxides or carbonate), soluble and gases species. These new precursors are more stable preventing the rapid precipitation of metal, oxides or carbonate. Furthermore, this route allows the formation of pure compounds in solutions.

  15. 2013 Technical Roundtable

    Science.gov (United States)

    On December 9, 2013, EPA reconvened the study’s Technical Roundtable. Subject-matter experts discussed the outcomes of the 2013 Technical Workshops, stakeholder engagement, and plans for draft assessment report.

  16. Technical Assistance Plan (TAP)

    Science.gov (United States)

    A Technical Assistance Plan (TAP) enables community groups to retain the services of an independent technical advisor and to provide resources for a community group to help inform other community members about site decisions.

  17. Technical training - places available

    CERN Multimedia

    2013-01-01

    If you would like more information on a course, or have any other inquiry/suggestions, please contact Technical.Training@cern.ch. Eva Stern and Elise Romero, Technical Training Administration (Tel: 74924)

  18. Technical training: places available

    CERN Multimedia

    2014-01-01

    If you would like more information on a course, or have any other inquiry/suggestions, please contact Technical.Training@cern.ch. Eva Stern and Marie Lahchimi, Technical Training Administration (Tel: 74924)

  19. Technical training: places available

    CERN Multimedia

    2013-01-01

    If you would like more information on a course, or for any other inquiry/suggestions, please contact Technical.Training@cern.ch. Eva Stern and Elise Romero, Technical Training Administration (Tel: 74924)

  20. Technical training: places available

    CERN Multimedia

    2013-01-01

    If you would like more information on a course, or for any other inquiry/suggestions, please contact Technical.Training@cern.ch. Eva Stern and Elise Romero, Technical Training Administration (Tél : 74924)  

  1. Technical training: places available

    CERN Multimedia

    2014-01-01

    If you would like more information on a course, or have any other inquiry/suggestions, please contact Technical.Training@cern.ch. Eva Stern and Elise Romero, Technical Training Administration (Tel: 74924)

  2. Chapter 12. Pure Tap Water Hydraulic Systems and Applications

    DEFF Research Database (Denmark)

    Conrad, Finn; Adelstorp, Anders

    1997-01-01

    Presentation of developed a modern pure tap water hydraulic components (Nessie), systems and industrial applications.......Presentation of developed a modern pure tap water hydraulic components (Nessie), systems and industrial applications....

  3. Pure Red Cell Aplasia Caused by Acute Hepatitis A

    OpenAIRE

    Lee, Tae Heon; Oh, Suk Joong; Hong, Soojung; Lee, Kyu Bek; Park, Hyosoon; Woo, Hee-Yeon

    2011-01-01

    Pure red cell aplasia is characterized as a normocytic anemia associated with reticulocytopenia and the absence of erythroblasts in the bone marrow. Pure red cell aplasia can be induced by various causes such as thymoma, connective tissue disease, viral infection, lymphoma, and adverse drug reactions. There have been only a few reports of pure red cell aplasia associated with acute viral hepatitis A. In Korea, no case of pure red cell aplasia caused by acute hepatitis A has yet been reported....

  4. Teaching Technical Writing - Towards Technical Writing

    DEFF Research Database (Denmark)

    Kastberg, Peter

    2000-01-01

    In this paper I will present key aspects of the curriculum for the university degree in technical translation that I have designed for and subsequently implemented at the German Department of the Aarhus School of Business, Denmark. My starting point will be a critical discussion of the norm...... that used to govern what the quality of an LSP text should be as opposed to the standpoint, which I advocate. By way of summing up, I will show how a university curriculum is designed so that - upon graduation - the technical translator could also be methodological quite well suited to take on the challenge...... of technical writing....

  5. Waste Management Technical Manual

    Energy Technology Data Exchange (ETDEWEB)

    Buckingham, J.S. [ed.

    1967-08-31

    This Manual has been prepared to provide a documented compendium of the technical bases and general physical features of Isochem Incorporated`s Waste Management Program. The manual is intended to be used as a means of training and as a reference handbook for use by personnel responsible for executing the Waste Management Program. The material in this manual was assembled by members of Isochem`s Chemical Processing Division, Battelle Northwest Laboratory, and Hanford Engineering Services between September 1965 and March 1967. The manual is divided into the following parts: Introduction, contains a summary of the overall Waste Management Program. It is written to provide the reader with a synoptic view and as an aid in understanding the subsequent parts; Feed Material, contains detailed discussion of the type and sources of feed material used in the Waste Management Program, including a chapter on nuclear reactions and the formation of fission products; Waste Fractionization Plant Processing, contains detailed discussions of the processes used in the Waste Fractionization Plant with supporting data and documentation of the technology employed; Waste Fractionization Plant Product and Waste Effluent Handling, contains detailed discussions of the methods of handling the product and waste material generated by the Waste Fractionization Plant; Plant and Equipment, describes the layout of the Waste Management facilities, arrangement of equipment, and individual equipment pieces; Process Control, describes the instruments and analytical methods used for process control; and Safety describes process hazards and the methods used to safeguard against them.

  6. Industrial Maintenance Technology. Technical Committee Report.

    Science.gov (United States)

    Idaho State Dept. of Education, Boise. Div. of Vocational Education.

    This Technical Committee Report prepared by industry representatives in Idaho lists the skills currently necessary for an employee in that state to obtain a job in industrial maintenance technology, retain a job once hired, and advance in that occupational field. (Task lists are grouped according to duty areas generally used in industry settings,…

  7. Applied Welding Technology. Technical Committee Report.

    Science.gov (United States)

    Idaho State Dept. of Education, Boise. Div. of Vocational Education.

    This Technical Committee Report prepared by industry representatives in Idaho lists the skills currently necessary for an employee in that state to obtain a job in applied welding technology, retain a job once hired, and advance in that occupational field. (Task lists are grouped according to duty areas generally used in industry settings, and are…

  8. Precision Machining Technology. Technical Committee Report.

    Science.gov (United States)

    Idaho State Dept. of Education, Boise. Div. of Vocational Education.

    This Technical Committee Report prepared by industry representatives in Idaho lists the skills currently necessary for an employee in that state to obtain a job in precision machining technology, retain a job once hired, and advance in that occupational field. (Task lists are grouped according to duty areas generally used in industry settings, and…

  9. 76 FR 64083 - Reliability Technical Conference; Notice of Technical Conference

    Science.gov (United States)

    2011-10-17

    ... Energy Regulatory Commission Reliability Technical Conference; Notice of Technical Conference Take notice that the Federal Energy Regulatory Commission will hold a Technical Conference on Tuesday, November 29... addressing risks to reliability that were identified in earlier Commission technical conferences....

  10. On The Human, Organizational, and Technical Aspects of Software Development and Analysis

    Science.gov (United States)

    Damaševičius, Robertas

    Information systems are designed, constructed, and used by people. Therefore, a software design process is not purely a technical task, but a complex psycho-socio-technical process embedded within organizational, cultural, and social structures. These structures influence the behavior and products of the programmer's work such as source code and documentation. This chapter (1) discusses the non-technical (organizational, social, cultural, and psychological) aspects of software development reflected in program source code; (2) presents a taxonomy of the social disciplines of computer science; and (3) discusses the socio-technical software analysis methods for discovering the human, organizational, and technical aspects embedded within software development artifacts.

  11. Hologram of a pure state black hole

    Science.gov (United States)

    Roy, Shubho R.; Sarkar, Debajyoti

    2015-12-01

    In this paper, we extend the Hamilton-Kabat-Lifschytz-Lowe (HKLL) holographic smearing function method to reconstruct (quasi)local anti-de Sitter bulk scalar observables in the background of a large anti-de Sitter black hole formed by null shell collapse (a "pure state" black hole), from the dual conformal field theory which is undergoing a sudden quench. In particular, we probe the near horizon and subhorizon bulk locality. First, we construct local bulk operators from the conformal field theory in the leading semiclassical limit, N →∞ . Then, we look at effects due to the finiteness of N , where we propose a suitable coarse-graining prescription involving early and late time cutoffs to define semiclassical bulk observables which are approximately local, their departure from locality being nonperturbatively small in N . Our results have important implications on the black hole information problem.

  12. Anomalous rectification in a purely electronic memristor

    Science.gov (United States)

    Wang, Jingrui; Pan, Ruobing; Cao, Hongtao; Wang, Yang; Liang, Lingyan; Zhang, Hongliang; Gao, Junhua; Zhuge, Fei

    2016-10-01

    An anomalous rectification was observed in a purely electronic memristive device Ti/ZnO/Pt. It could be due to (1) an Ohmic or quasi-Ohmic contact at the ZnO/Pt interface and (2) a Schottky contact at the Ti/ZnO interface. The Ohmic contact originates from the reduction of ZnO occurring in the whole film instead of only at the Ti/ZnO interface. The Schottky contact may come from moisture adsorbed in the nanoporous ZnO. The conduction in the electroformed device is controlled by the carrier trapping/detrapping of the trap sites, inducing a poor rectification and high nonlinearity. Furthermore, a complementary resistive switching was achieved.

  13. Momentum of the Pure Radiation Field

    Directory of Open Access Journals (Sweden)

    Lehnert B.

    2007-01-01

    Full Text Available The local momentum equation of the pure radiation field is considered in terms of an earlier elaborated and revised electromagnetic theory. In this equation the contribution from the volume force is found to vanish in rectangular geometry, and to become nonzero but negligible in cylindrical geometry. Consequently the radiated momentum is due to the Poynting vector only, as in conventional electrodynamics. It results in physically relevant properties of a photon model having an angular momentum (spin. The Poynting vector concept is further compared to the quantized momentum concept for a free particle, as represented by a spatial gradient operator acting on the wave function. However, this latter otherwise successful concept leads to difficulties in the physical interpretation of known and expected photon properties such as the spin, the negligible loss of transverse momentum across a bounding surface, and the Lorentz invariance.

  14. Evolving spacetimes with purely radial tension

    Directory of Open Access Journals (Sweden)

    B. Nasre Esfahani

    2000-12-01

    Full Text Available   In this study time-dependent and spherically symmetric solutions of the Einstein field equations in an anisotropic background with a purely radial tension are presented. There exist three classes of solutions,1 An open spacetime with a wormhole at its center. 2 A conical spacetime. 3 A closed spacetime. These inhomogeneous solutions are reduced to FRW spacetimes in matter-dominated era, asymptotically. Therefore, they can be used to describe local inhomogeneities that are not considered in the standard model. For the wormhole solution. it is explicity shown that the considered matter is non-exotic, that is, it does not violate the energy conditions. Also, static solutions are studied. There is only one static solution,a conical spacetime. In this case, the matter satisfies the energy condition critically.

  15. Pure White Cell Aplasia and Necrotizing Myositis

    Directory of Open Access Journals (Sweden)

    Peter Geon Kim

    2016-01-01

    Full Text Available Pure white cell aplasia (PWCA is a rare hematologic disorder characterized by the absence of neutrophil lineages in the bone marrow with intact megakaryopoiesis and erythropoiesis. PWCA has been associated with autoimmune, drug-induced, and viral exposures. Here, we report a case of a 74-year-old female who presented with severe proximal weakness without pain and was found to have PWCA with nonspecific inflammatory necrotizing myositis and acute liver injury on biopsies. These findings were associated with a recent course of azithromycin and her daily use of a statin. Myositis improved on prednisone but PWCA persisted. With intravenous immunoglobulin and granulocyte-colony stimulating factor therapies, her symptoms and neutrophil counts improved and were sustained for months.

  16. Fock expansion of multimode pure Gaussian states

    Energy Technology Data Exchange (ETDEWEB)

    Cariolaro, Gianfranco; Pierobon, Gianfranco, E-mail: gianfranco.pierobon@unipd.it [Università di Padova, Padova (Italy)

    2015-12-15

    The Fock expansion of multimode pure Gaussian states is derived starting from their representation as displaced and squeezed multimode vacuum states. The approach is new and appears to be simpler and more general than previous ones starting from the phase-space representation given by the characteristic or Wigner function. Fock expansion is performed in terms of easily evaluable two-variable Hermite–Kampé de Fériet polynomials. A relatively simple and compact expression for the joint statistical distribution of the photon numbers in the different modes is obtained. In particular, this result enables one to give a simple characterization of separable and entangled states, as shown for two-mode and three-mode Gaussian states.

  17. Hologram of a pure state black hole

    CERN Document Server

    Roy, Shubho R

    2015-01-01

    In this paper we extend the HKLL holographic smearing function method to reconstruct (quasi)local AdS bulk scalar observables in the background of a large AdS black hole formed by null shell collapse (a "pure state" black hole), from the dual CFT which is undergoing a sudden quench. In particular, we probe the near horizon and sub-horizon bulk locality. First we construct local bulk operators from the CFT in the leading semiclassical limit, $N\\rightarrow\\infty$. Then we look at effects due to the finiteness of $N$, where we propose a suitable coarse-graining prescription involving early and late time cut-offs to define semiclassical bulk observables which are approximately local; their departure from locality being non-perturbatively small in $N$. Our results have important implications on the black hole information problem.

  18. Purely antiferromagnetic magnetoelectric random access memory

    Science.gov (United States)

    Kosub, Tobias; Kopte, Martin; Hühne, Ruben; Appel, Patrick; Shields, Brendan; Maletinsky, Patrick; Hübner, René; Liedke, Maciej Oskar; Fassbender, Jürgen; Schmidt, Oliver G.; Makarov, Denys

    2017-01-01

    Magnetic random access memory schemes employing magnetoelectric coupling to write binary information promise outstanding energy efficiency. We propose and demonstrate a purely antiferromagnetic magnetoelectric random access memory (AF-MERAM) that offers a remarkable 50-fold reduction of the writing threshold compared with ferromagnet-based counterparts, is robust against magnetic disturbances and exhibits no ferromagnetic hysteresis losses. Using the magnetoelectric antiferromagnet Cr2O3, we demonstrate reliable isothermal switching via gate voltage pulses and all-electric readout at room temperature. As no ferromagnetic component is present in the system, the writing magnetic field does not need to be pulsed for readout, allowing permanent magnets to be used. Based on our prototypes, we construct a comprehensive model of the magnetoelectric selection mechanisms in thin films of magnetoelectric antiferromagnets, revealing misfit induced ferrimagnetism as an important factor. Beyond memory applications, the AF-MERAM concept introduces a general all-electric interface for antiferromagnets and should find wide applicability in antiferromagnetic spintronics.

  19. Synaptic devices based on purely electronic memristors

    Energy Technology Data Exchange (ETDEWEB)

    Pan, Ruobing [Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201 (China); Institute of Materials Science, School of Materials Science and Engineering, Shanghai University, Shanghai 200072 (China); Li, Jun; Zhuge, Fei, E-mail: zhugefei@nimte.ac.cn, E-mail: h-cao@nimte.ac.cn; Zhu, Liqiang; Liang, Lingyan; Zhang, Hongliang; Gao, Junhua; Cao, Hongtao, E-mail: zhugefei@nimte.ac.cn, E-mail: h-cao@nimte.ac.cn; Fu, Bing; Li, Kang [Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201 (China)

    2016-01-04

    Memristive devices have been widely employed to emulate biological synaptic behavior. In these cases, the memristive switching generally originates from electrical field induced ion migration or Joule heating induced phase change. In this letter, the Ti/ZnO/Pt structure was found to show memristive switching ascribed to a carrier trapping/detrapping of the trap sites (e.g., oxygen vacancies or zinc interstitials) in ZnO. The carrier trapping/detrapping level can be controllably adjusted by regulating the current compliance level or voltage amplitude. Multi-level conductance states can, therefore, be realized in such memristive device. The spike-timing-dependent plasticity, an important Hebbian learning rule, has been implemented in this type of synaptic device. Compared with filamentary-type memristive devices, purely electronic memristors have potential to reduce their energy consumption and work more stably and reliably, since no structural distortion occurs.

  20. Bipedal nanowalker by pure physical mechanisms

    CERN Document Server

    Cheng, Juan; Hou, Ruizheng; Efremov, Artem; Liu, Ruchuan; van der Maarel, Johan RC; Wang, Zhisong

    2013-01-01

    Artificial nanowalkers are inspired by biomolecular counterparts from living cells, but remain far from comparable to the latter in design principles. The walkers reported to date mostly rely on chemical mechanisms to gain a direction; they all produce chemical wastes. Here we report a light-powered DNA bipedal walker based on a design principle derived from cellular walkers. The walker has two identical feet and the track has equal binding sites; yet the walker gains a direction by pure physical mechanisms that autonomously amplify an intra-site asymmetry into a ratchet effect. The nanowalker is free of any chemical waste. It has a distinct thermodynamic feature that it possesses the same equilibrium before and after operation, but generates a truly non-equilibrium distribution during operation. The demonstrated design principle exploits mechanical effects and is adaptable for use in other nanomachines.

  1. 7 CFR 201.64 - Pure live seed.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 3 2010-01-01 2010-01-01 false Pure live seed. 201.64 Section 201.64 Agriculture..., Inspections, Marketing Practices), DEPARTMENT OF AGRICULTURE (CONTINUED) FEDERAL SEED ACT FEDERAL SEED ACT REGULATIONS Tolerances § 201.64 Pure live seed. The tolerance for pure live seed shall be determined...

  2. Tractable Quantification of Entanglement for Multipartite Pure States

    Institute of Scientific and Technical Information of China (English)

    JIANG Nian-Quan; WANG Yu-Jian; ZHENG Yi-Zhuang; CAI Gen-Chang

    2008-01-01

    We present kth-order entanglement measure and global kth-order entanglement measure for multipartite pure states, and extend Bennett's measure of partial entropy for bipartite pure states to a multipartite case. These measures are computable and can effectively classify and quantify the entanglement of multipartite pure states.

  3. Effect of silica coating on the bond strength of milled pure titanium to dental porcelain.

    Science.gov (United States)

    Ye, Jiantao; Ye, Xiuhua; Chang, Shaohai; Liu, Lang; Zhang, Yiping; Lin, Shiyao

    2016-10-01

    The creation of a high bond strength between machined computer-manufactured pure titanium and porcelain remains problematic, and the effects of a silica coating on the bond strength of milled pure titanium bonded to dental porcelain require further investigation. The objective of this study was to evaluate the bond strength of machined pure titanium, with an intermediate coating of silica, to dental porcelain. In this work, 24 specimens of milled pure titanium were prepared and randomly divided into test and control groups, in which the test group was coated with silica using the sol-gel dipping technique. The metal-ceramic bond strength was evaluated, according to ISO 9693 standards, using the three-point bending test, and scanning electron microscopy and energy-dispersive spectroscopy were used to study the microstructure and elemental composition of the specimens. The bonding strength of the silica-coated group was significantly higher than that of the control group, and more residual porcelain on the metal surface could be observed in the silica-coated group. Therefore, the application of a silica intermediate coating produced using the sol-gel method could significantly improve the bond strength between machined pure titanium and porcelain.

  4. Biocatalytic organic synthesis of optically pure (S)-scoulerine and berbine and benzylisoquinoline alkaloids.

    Science.gov (United States)

    Schrittwieser, Joerg H; Resch, Verena; Wallner, Silvia; Lienhart, Wolf-Dieter; Sattler, Johann H; Resch, Jasmin; Macheroux, Peter; Kroutil, Wolfgang

    2011-08-19

    A chemoenzymatic approach for the asymmetric total synthesis of the title compounds is described that employs an enantioselective oxidative C-C bond formation catalyzed by berberine bridge enzyme (BBE) in the asymmetric key step. This unique reaction yielded enantiomerically pure (R)-benzylisoquinoline derivatives and (S)-berbines such as the natural product (S)-scoulerine, a sedative and muscle relaxing agent. The racemic substrates rac-1 required for the biotransformation were prepared in 4-8 linear steps using either a Bischler-Napieralski cyclization or a C1-Cα alkylation approach. The chemoenzymatic synthesis was applied to the preparation of fourteen enantiomerically pure alkaloids, including the natural products (S)-scoulerine and (R)-reticuline, and gave overall yields of up to 20% over 5-9 linear steps.

  5. Biocatalytic Organic Synthesis of Optically Pure (S)-Scoulerine and Berbine and Benzylisoquinoline Alkaloids

    Science.gov (United States)

    2011-01-01

    A chemoenzymatic approach for the asymmetric total synthesis of the title compounds is described that employs an enantioselective oxidative C–C bond formation catalyzed by berberine bridge enzyme (BBE) in the asymmetric key step. This unique reaction yielded enantiomerically pure (R)-benzylisoquinoline derivatives and (S)-berbines such as the natural product (S)-scoulerine, a sedative and muscle relaxing agent. The racemic substrates rac-1 required for the biotransformation were prepared in 4–8 linear steps using either a Bischler–Napieralski cyclization or a C1–Cα alkylation approach. The chemoenzymatic synthesis was applied to the preparation of fourteen enantiomerically pure alkaloids, including the natural products (S)-scoulerine and (R)-reticuline, and gave overall yields of up to 20% over 5–9 linear steps. PMID:21739961

  6. Gas Sensing Performance of Pure and Modified BST Thick Film Resistor

    Directory of Open Access Journals (Sweden)

    G. H. JAIN

    2008-04-01

    Full Text Available Barium Strontium Titanate (BST-(Ba0.87Sr0.13TiO3 ceramic powder was prepared by mechanochemical process. The thick films of different thicknesses of BST were prepared by screen-printing technique and gas-sensing performance of these films was tested for various gases. The films showed highest response and selectivity to ammonia gas. The pure BST film was surface modified by surfactant CrO3 by using dipping technique. The surface modified film suppresses the response to ammonia and enhances to H2S gas. The surface modification of films changes the adsorption-desorption relationship with the target gas and shifts its selectivity. The gas response, selectivity, response and recovery time of the pure and modified films were measured and presented.

  7. Social cognition in "pure" delusional disorder.

    Science.gov (United States)

    Bömmer, Isabel; Brüne, Martin

    2006-09-01

    Introduction. Delusional disorders are characterised by monothematic, "encapsulated" and incorrigible false beliefs and misinterpretations of social signals. Due to the rarity of cases with "pure" delusional disorder (DD) in clinical settings most studies of social cognition in delusional patients have focused on patients with paranoid schizophrenia. In the present study we sought to examine emotion recognition, theory of mind abilities, and pragmatic language comprehension in patients with delusional disorder. Methods. Social cognition was assessed in 21 patients recruited over a 3-year period who were diagnosed with delusional disorder, paranoid, erotomanic, or jealous type. In addition to an emotion recognition and theory of mind test battery, we included a novel German Proverb Test, which has been found indicative of subtle theory of mind deficits in schizophrenic patients. Executive functioning was assessed using the Wisconsin Card Sorting Test (WCST). Psychopathology was measured using the Positive and Negative Symptoms Scale (PANSS). Patients' task performance was compared to a group of 22 healthy control persons paralleled for verbal intelligence, education, and age. Results. Patients with DD made significantly more perseverative errors in the WCST, they performed more poorly on the theory of mind tasks and the proverb test, but were unimpaired in basic emotion recognition abilities relative to controls. When executive functioning was co-varied out, the group differences in theory of mind disappeared, whereas the greater propensity of patients with DD to interpret proverbs literally remained significant. Conclusions. In "pure" DD the basic social cognitive abilities appear to be preserved. Difficulties in metaphorical speech comprehension and executive functioning could, however, indicate more subtle social cognitive deficits in these patients.

  8. Hole transport in pure and doped hematite

    Science.gov (United States)

    Liao, Peilin; Carter, Emily A.

    2012-07-01

    Hematite (α-Fe2O3) is a promising candidate for use in photovoltaic (PV) and photoelectrochemical devices. Its poor conductivity is one major drawback. Doping hematite either p-type or n-type greatly enhances its measured conductivity and is required for potential p-n junctions in PVs. Here, we study hole transport in pure and doped hematite using an electrostatically embedded cluster model with ab initio quantum mechanics (unrestricted Hartree-Fock theory). Consistent with previous work, the model suggests that hole hopping is via oxygen anions for pure hematite. The activation energy for hole mobility is predicted to be at least 0.1 eV higher than the activation energy for electron mobility, consistent with the trend observed in experiments. We examine four dopants—magnesium(II), nickel(II), copper(II), and manganese(II/III) in direct cation substitution sites—to gain insight into the mechanism by which conductivity is improved. The activation energies are used to assess qualitative effects of different dopants. The hole carriers are predicted to be attracted to O anions near the dopants. The magnitude of the trapping effect is similar among the four dopants in their +2 oxidation states. The multivalent character of Mn doping facilitates local hole transport around Mn centers via a low-barrier O-Mn-O pathway, which suggests that higher hole mobility can be achieved with increasing Mn doping concentration, especially when a network of these low-barrier pathways is produced. Our results suggest that the experimentally observed conductivity increase in Mg-, Ni-, and Cu-doped p-type hematite is mostly due to an increase in hole carriers rather than improved mobility, and that Mg-, Ni-, and Cu-doping perform similarly, while the conductivity of Mn-doped hematite might be significantly improved in the high doping concentration limit.

  9. Production of pure hydrogen by ethanol dehydrogenation

    Energy Technology Data Exchange (ETDEWEB)

    Santacesaria, E.; Carotenuto, G.; Tesser, R.; Di Serio, M. [Naples ' ' Federico II' ' Univ. (Italy). Dept. of Chemistry

    2010-12-30

    Hydrogen production from bio-ethanol is one of the most promising renewable processes to generate electricity using fuel cells. In this work, we have studied the production of pure hydrogen as by product of ethanol dehydrogenation reaction. This reaction is promoted by copper based catalysts and according to the catalyst used and the operative conditions gives place to acetaldehyde or ethyl acetate as main products. We studied in particular the performance of a commercial copper/copper chromite catalyst, supported on alumina and containing barium chromate as promoter that has given the best results. By operating at low pressure and temperature with short residence times, acetaldehyde is more selectively produced, while, by increasing the pressure (10-30 bars), the temperature (200-260 C) and the residence time (about 100 (grams hour/mol) of ethanol contact time) the selectivity is shifted to the production of ethyl acetate. However, in both cases pure hydrogen is obtained, as by product, that can easily be separated. Hydrogen obtained in this way is exempt of CO and can be directly fed to fuel cells without any inconvenience. In this work, runs performed in different operative conditions have been reported with the scope to individuate the best conditions. A carrier of H{sub 2} 6% in N{sub 2} has been used. The studied catalyst has also shown a good thermal stability with respect to sintering phenomena, that generally occurs during the dehydrogenation on other copper catalysts. Hydrogen productivities of 8-39 mol{sub H2} (gcat){sup -1}(h){sup -1} have been obtained for the explored temperature range 200-260 C. At last, the most accredited reaction mechanism is reported and discussed on the basis of the obtained results. (orig.)

  10. Pure Absolutely Continuous Spectrum for Random Operators on $l^2(Z^d)$ at Low Disorder

    CERN Document Server

    Grinshpun, V

    2006-01-01

    Absence of singular continuous component, with probability one, in the spectra of random perturbations of multidimensional finite-difference Hamiltonians, is for the first time rigorously established under certain conditions ensuring either absence of point component, or absence of absolutely continuous component in the corresponding regions of spectra. The main technical tool involved is the rank-one perturbation theory of singular spectra. The respective new result (the non-mixing property) is applied to establish existence and bounds of the (non-empty) pure absolutely continuous component in the spectrum of the Anderson model with bounded random potential in dimension d=2 at low disorder (similar proof holds for d>4). The new result implies, via the trace-class perturbation analysis, Anderson model with the unbounded random potential having only pure point spectrum (complete system of localized wave-functions) with probability one in arbitrary dimension. The basic idea is to establish absence of the mixed,...

  11. The Technical Communicator as Corporate Spokesperson: A Public Relations Primer.

    Science.gov (United States)

    Troester, Rod; Warburton, Terrence L.

    2001-01-01

    Examines the changing role of the technical communication professional in the rapidly evolving environment of organizational life. Presents five principles that serve as an initial step in laying a foundation for the preparation of technical communicators for the challenges and opportunities awaiting in contemporary organizations and the…

  12. Philosophical and Sociological Overview of Vocational Technical Education in Nigeria

    Science.gov (United States)

    Kennedy, Odu Oji

    2012-01-01

    Vocational Technical Education is any kind of education which has the main purpose of preparing one for employment in recognized occupation. The foundation of vocational technical education is based on philosophy which was mainly established for self-employment and self-reliance of the individual(s) who partake in it. Viewing the philosophy and…

  13. Synthesis of highly phase pure (Bi, Pb)-Sr-Ca-Cu-O superconductor

    Science.gov (United States)

    Dorris, Stephen E.; Poeppel, Roger B.; Prorok, Barton C.; Lanagan, Michael T.; Maroni, Victor A.

    1994-01-01

    An article and method of manufacture of (Bi,Pb)-Sr-Ca-Cu-O superconductor. The superconductor is manufactured by preparing a first powdered mixture of bismuth oxide, lead oxide, strontium carbonate, calcium carbonate and copper oxide. A second powdered mixture is then prepared of strontium carbonate, calcium carbonate and copper oxide. The mixtures are calcined separately with the two mixtures then combined. The resulting combined mixture is then subjected to a powder in tube deformation and thermal processing to produce a substantially phase pure (Bi,Pb)-Sr-Ca-Cu-O superconductor.

  14. Access cavity preparation.

    Science.gov (United States)

    Adams, N; Tomson, P L

    2014-03-01

    Each stage of root canal treatment should be carried out to the highest possible standard. The access cavity is arguably the most important technical stage, as subsequent preparation of the root canal(s) can be severely comprised if this is not well executed. Inadequate access can lead to canals being left untreated, poorly disinfected, difficult to shape and obturate, and may ultimately lead to the failure of the treatment. This paper highlights common features in root canal anatomy and outlines basic principles for locating root canals and producing a good access cavity. It also explores each phase of the preparation in detail and offers suggestions of instruments that have been specifically designed to overcome potential difficulties in the process. Good access design and preparation will result in an operative environment which will facilitate cleaning, shaping and obturation of the root canal system in order to maximise success.

  15. Accelerating degradation rate of pure iron by zinc ion implantation

    Science.gov (United States)

    Huang, Tao; Zheng, Yufeng; Han, Yong

    2016-01-01

    Pure iron has been considered as a promising candidate for biodegradable implant applications. However, a faster degradation rate of pure iron is needed to meet the clinical requirement. In this work, metal vapor vacuum arc technology was adopted to implant zinc ions into the surface of pure iron. Results showed that the implantation depth of zinc ions was about 60 nm. The degradation rate of pure iron was found to be accelerated after zinc ion implantation. The cytotoxicity tests revealed that the implanted zinc ions brought a slight increase on cytotoxicity of the tested cells. In terms of hemocompatibility, the hemolysis of zinc ion implanted pure iron was lower than 2%. However, zinc ions might induce more adhered and activated platelets on the surface of pure iron. Overall, zinc ion implantation can be a feasible way to accelerate the degradation rate of pure iron for biodegradable applications. PMID:27482462

  16. Combustion Diagnostics by Pure Rotational Coherent Anti-Stokes Raman Scattering

    Science.gov (United States)

    Leipertz, Alfred; Seeger, Thomas

    Since its first use in Richard Chang's laboratory in 1982 in a comparative study with vibrational coherent anti-Stokes Raman scattering (VCARS) in a flame, pure rotational coherent anti-Stokes Raman scattering (RCARS) has gained tremendous importance for gas temperature and relative species concentration measurements in combustion diagnostics. The field of application covers basic studies on diagnostics development and on flame research as well as its use in technical combustion systems, e.g., for the determination of the gas-phase temperature in the vaporizing spray of a gasoline direct injection (GDI) injector or for the simultaneous measurement of gas temperature and exhaust-gas-recirculation rate (EGR rate) in a homogeneous charge compression ignition (HCCI) engine. An overview is given on the fundamentals of the technique and on its most important technical applications.

  17. AgraPure Mississippi Biomass Project

    Energy Technology Data Exchange (ETDEWEB)

    Blackwell,D.A; Broadhead, L.W.; Harrell, W.J.

    2006-03-31

    The AgraPure Mississippi Biomass project was a congressionally directed project, initiated to study the utilization of Mississippi agricultural byproducts and waste products in the production of bio-energy and to determine the feasibility of commercialization of these agricultural byproducts and waste products as feedstocks in the production of energy. The final products from this project were two business plans; one for a Thermal plant, and one for a Biodiesel/Ethanol plant. Agricultural waste fired steam and electrical generating plants and biodiesel plants were deemed the best prospects for developing commercially viable industries. Additionally, oil extraction methods were studied, both traditional and two novel techniques, and incorporated into the development plans. Mississippi produced crop and animal waste biomasses were analyzed for use as raw materials for both industries. The relevant factors, availability, costs, transportation, storage, location, and energetic value criteria were considered. Since feedstock accounts for more than 70 percent of the total cost of producing biodiesel, any local advantages are considered extremely important in developing this particular industry. The same factors must be evaluated in assessing the prospects of commercial operation of a steam and electrical generation plant. Additionally, the access to the markets for electricity is more limited, regulated and tightly controlled than the liquid fuel markets. Domestically produced biofuels, both biodiesel and ethanol, are gaining more attention and popularity with the consuming public as prices rise and supplies of foreign crude become less secure. Biodiesel requires no major modifications to existing diesel engines or supply chain and offers significant environmental benefits. Currently the biodiesel industry requires Federal and State incentives to allow the industry to develop and become self-sustaining. Mississippi has available the necessary feedstocks and is

  18. Preparation and amendment of technical standard “Technical requirements for forgings of high-speed tool steel”%技术标准《高速工具钢锻件技术条件》的编制及解读

    Institute of Scientific and Technical Information of China (English)

    金颖

    2013-01-01

    With the rapid development of domestic forging technology,the quality of forging products is being continuously improved.Especially,the improvement of the quality of high-speed tool steel has made that more and more highperformance tool products should be guaranteed by specifying forging process and inspection standards.In order to meet the development of forging technology,it is necessary to make amendments and supplements to previous technical standards.Now absorbing and learning from the corresponding technical specifications,and considering the situation and development trend of forging technology of high-speed tool steel,the standard “Technical requirements for forgings of high-speed tool steel” was amended in the aspects of technical requirements,test methods,inspection rules,marking and quality certification documents and the standards of forgings carbide uniformity diagrams.%近年来国内锻造技术发展迅猛,锻造产品的质量在不断提高,特别是高速工具钢锻件质量的提升,使得越来越多的高性能刀具产品要求通过规范锻造工艺及检验标准来保证.为适应锻造技术的发展,有必要对以往的技术标准进行相应的修正与补充.现吸收、借鉴国内相应技术规范,并充分考虑高速工具钢锻造技术现状及发展趋势,从技术要求、检验方法、检查规则、标志及质量证明文件、锻件碳化物均匀度评级图标准等相应要素人手,对机械行业标准《高速工具钢锻件技术条件》进行编制修订.

  19. Pure Culture Fermentation of Brined Cucumbers.

    Science.gov (United States)

    Etchells, J L; Costilow, R N; Anderson, T E; Bell, T A

    1964-11-01

    The relative abilities of Pediococcus cerevisiae, Lactobacillus plantarum, L. brevis, and several other species of lactic acid bacteria to grow and produce acid in brined cucumbers were evaluated in pure culture fermentations. Such fermentations were made possibly by the use of two techniques, gamma radiation (0.83 to 1.00 Mrad) and hot-water blanching (66 to 80 C for 5 min), designed first to rid the cucumbers of naturally occurring, interfering, and competitive microbial groups prior to brining, followed by inoculation with the desired lactic acid bacteria. Of the nine species tested, strains of the three common to cucumber fermentations, P. cerevisiae, L. plantarum, and L. brevis, grew to the highest populations, and produced the highest levels of brine acidity and the lowest pH values in fermentations at 5.4 to 5.6% NaCl by weight; also, their sequence of active development in fermentations, with the use of a three-species mixture for inoculation, was in the species order just named. This sequence of occurrence was similar to that estimated by others for natural fermentations. The rates of growth and acid production in fermentations with a mixture of P. cerevisiae, L. plantarum, and L. brevis increased as the incubation temperature was increased from 21 to 27 to 32 C; however, the maximal populations and acidities attained were essentially the same for fermentations at each temperature. Further, these same three species were found to be the most salt tolerant of those tested; their upper limit for appreciable growth and measurable acid production was about 8% salt, whereas thermophilic species such as L. thermophilus, L. lactis, L. helveticus, L. fermenti, and L. delbrueckii exhibited a much lower salt tolerance, ranging from about 2.5 to 4.0%. However, certain strains of L. delbrueckii grew very rapidly in cucumbers brined at 2.5 to 3.0% salt, and produced sufficient acid in about 30 hr at 48 C to reduce the brine pH from above 7.0 to below 4.0. An inexpensive

  20. Pure Land or Pure Mind?: Locus of Awakening and American Popular Religious Culture

    Directory of Open Access Journals (Sweden)

    Richard K. Payne

    2015-03-01

    Full Text Available This essay has two sections, each with its own distinct goal, forming an interrelated whole. The first introduces “locus of awakening,” and applies it to the relative success in America of Zen and Tibetan Buddhisms, compared to Pure Land Buddhism. The explanatory power of the concept is demonstrated by also considering Soka Gakkai. The difference between popular culture treatments of Zen and Tibetan Buddhisms, and Pure Land Buddhism was the problematic leading to identifying locus of awakening as an aspect of Buddhist thought. The second section locates it in the history of Buddhist thought, demonstrating that it is not a modern conceptualization of the path, not one created in response to Euro–American religio-therapeutic culture. Locus of awakening is, instead, part of the continuity of the Buddhist tradition, and does not fall on one side or the other of the sometimes overdrawn dichotomy between Asian and American Buddhisms.

  1. Hyperbolic billiards of pure D=4 supergravities

    CERN Document Server

    Henneaux, M; Henneaux, Marc; Julia, Bernard

    2003-01-01

    We compute the billiards that emerge in the Belinskii-Khalatnikov-Lifshitz (BKL) limit for all pure supergravities in D=4 spacetime dimensions, as well as for D=4, N=4 supergravities coupled to k (N=4) Maxwell supermultiplets. We find that just as for the cases N=0 and N=8 investigated previously, these billiards can be identified with the fundamental Weyl chambers of hyperbolic Kac-Moody algebras. Hence, the dynamics is chaotic in the BKL limit. A new feature arises, however, which is that the relevant Kac-Moody algebra can be the Lorentzian extension of a twisted affine Kac-Moody algebra, while the N=0 and N=8 cases are untwisted. This occurs for N=5, N=3 and N=2. An understanding of this property is provided by showing that the data relevant for determining the billiards are the restricted root system and the maximal split subalgebra of the finite-dimensional real symmetry algebra characterizing the toroidal reduction to D=3 spacetime dimensions. To summarize: split symmetry controls chaos.

  2. Purely antiferromagnetic magnetoelectric random access memory

    Science.gov (United States)

    Kosub, Tobias; Kopte, Martin; Hühne, Ruben; Appel, Patrick; Shields, Brendan; Maletinsky, Patrick; Hübner, René; Liedke, Maciej Oskar; Fassbender, Jürgen; Schmidt, Oliver G.; Makarov, Denys

    2017-01-01

    Magnetic random access memory schemes employing magnetoelectric coupling to write binary information promise outstanding energy efficiency. We propose and demonstrate a purely antiferromagnetic magnetoelectric random access memory (AF-MERAM) that offers a remarkable 50-fold reduction of the writing threshold compared with ferromagnet-based counterparts, is robust against magnetic disturbances and exhibits no ferromagnetic hysteresis losses. Using the magnetoelectric antiferromagnet Cr2O3, we demonstrate reliable isothermal switching via gate voltage pulses and all-electric readout at room temperature. As no ferromagnetic component is present in the system, the writing magnetic field does not need to be pulsed for readout, allowing permanent magnets to be used. Based on our prototypes, we construct a comprehensive model of the magnetoelectric selection mechanisms in thin films of magnetoelectric antiferromagnets, revealing misfit induced ferrimagnetism as an important factor. Beyond memory applications, the AF-MERAM concept introduces a general all-electric interface for antiferromagnets and should find wide applicability in antiferromagnetic spintronics. PMID:28045029

  3. Reexamination of pure qubit work extraction.

    Science.gov (United States)

    Frenzel, Max F; Jennings, David; Rudolph, Terry

    2014-11-01

    Many work extraction or information erasure processes in the literature involve the raising and lowering of energy levels via external fields. But even if the actual system is treated quantum mechanically, the field is assumed to be classical and of infinite strength, hence not developing any correlations with the system or experiencing back-actions. We extend these considerations to a fully quantum mechanical treatment by studying a spin-1/2 particle coupled to a finite-sized directional quantum reference frame, a spin-l system, which models an external field. With this concrete model together with a bosonic thermal bath, we analyze the back-action a finite-size field suffers during a quantum-mechanical work extraction process and the effect this has on the extractable work and highlight a range of assumptions commonly made when considering such processes. The well-known semiclassical treatment of work extraction from a pure qubit predicts a maximum extractable work W=kTlog2 for a quasistatic process, which holds as a strict upper bound in the fully quantum mechanical case and is attained only in the classical limit. We also address the problem of emergent local time dependence in a joint system with a globally fixed Hamiltonian.

  4. Non-universalities in pure gravity mediation

    Energy Technology Data Exchange (ETDEWEB)

    Evans, Jason L.; Olive, Keith A. [University of Minnesota, William I. Fine Theoretical Physics Institute, School of Physics and Astronomy, Minneapolis, MN (United States); Ibe, Masahiro [University of Tokyo, ICRR, Kashiwa (Japan); University of Tokyo, Kavli IPMU (WPI), TODIAS, Kashiwa (Japan); Yanagida, Tsutomu T. [University of Tokyo, Kavli IPMU (WPI), TODIAS, Kashiwa (Japan)

    2013-10-15

    The simplest model of pure gravity mediation contains only two free parameters: the gravitino mass and tan{beta}. Scalar masses are universal at some high energy renormalization scale and gaugino masses are determined through anomalies and depend on the gravitino mass and the gauge couplings. This theory requires a relatively large gravitino mass (m{sub 3/2}>or similar 300 TeV) and a limited range in tan{beta}{approx_equal}1.7-2.5. Here we generalize the theory to allow for non-universality in the Higgs soft masses. This introduces zero, one or two new free parameters associated with Higgs soft masses. This generalization allows us to greatly increase the allowed range in tan{beta} and it allows one to find viable solutions with lower m{sub 3/2}. The latter is important if we hope to find a low energy signal from gluinos. Some special cases of these non-universalities are suggestive of Higgs bosons as Nambu-Goldstone bosons or a partial no-scale structure for the Higgs doublets. Thus, we probe signatures at the weak scale and structures at the GUT and/or Planck scale. (orig.)

  5. Foaming of mixtures of pure hydrocarbons

    Science.gov (United States)

    Robinson, J. V.; Woods, W. W.

    1950-01-01

    Mixtures of pure liquid hydrocarbons are capable of foaming. Nine hydrocarbons were mixed in pairs, in all possible combinations, and four proportions of each combination. These mixtures were sealed in glass tubes, and the foaming was tested by shaking. Mixtures of aliphatic with other aliphatic hydrocarbons, or of alkyl benzenes with other alkyl benzenes, did not foam. Mixtures of aliphatic hydrocarbons with alkyl benzenes did foam. The proportions of the mixtures greatly affected the foaming, the maximum foaming of 12 of 20 pairs being at the composition 20 percent aliphatic hydrocarbon, 80 percent alkyl benzene. Six seconds was the maximum foam lifetime of any of these mixtures. Aeroshell 120 lubricating oil was fractionated into 52 fractions and a residue by extraction with acetone in a fractionating extractor. The index of refraction, foam lifetime, color, and viscosity of these fractions were measured. Low viscosity and high index fractions were extracted first. The viscosity of the fractions extracted rose and the index decreased as fractionation proceeded. Foam lifetimes and color were lowest in the middle fractions. Significance is attached to the observation that none of the foam lifetimes of the fractions or residue is as high as the foam lifetime of the original Aeroshell, indicating that the foaming is not due to a particular foaming constituent, but rather to the entire mixture.

  6. Triplet Pairing in pure neutron matter

    CERN Document Server

    Srinivas, Sarath

    2016-01-01

    We study the zero temperature BCS gaps for the triplet channel in pure neutron matter using Similarity Renormalization Group (SRG) evolved interactions. We use the dependence of the results on the SRG resolution scale, as a tool to analyze medium and many-body corrections. In particular, we study the effects of including the three-body interactions at leading order, which appear at N2LO in the Chiral EFT, as well as that of the first-order self-energy corrections on the zero temperature gap. In addition we also extract the transition temperature as a function of densities and verify the BCS scaling of the zero temperature gaps to the transition temperature. We observe that the self-energy effects are very crucial in order to reduce the SRG resolution scale dependence of the results, while the three-body effects at the leading order do not change the two-body resolution scale dependence. On the other hand, the results depend strongly on the three-body cut-off, emphasizing the importance of the missing higher-o...

  7. Pure gauge spin-orbit couplings

    Science.gov (United States)

    Shikakhwa, M. S.

    2017-01-01

    Planar systems with a general linear spin-orbit interaction (SOI) that can be cast in the form of a non-Abelian pure gauge field are investigated using the language of non-Abelian gauge field theory. A special class of these fields that, though a 2×2 matrix, are Abelian are seen to emerge and their general form is given. It is shown that the unitary transformation that gauges away these fields induces at the same time a rotation on the wave function about a fixed axis but with a space-dependent angle, both of which being characteristics of the SOI involved. The experimentally important case of equal-strength Rashba and Dresselhaus SOI (R+D SOI) is shown to fall within this special class of Abelian gauge fields, and the phenomenon of persistent spin helix (PSH) that emerges in the presence of this latter SOI in a plane is shown to fit naturally within the general formalism developed. The general formalism is also extended to the case of a particle confined to a ring. It is shown that the Hamiltonian on a ring in the presence of equal-strength R+D SOI is unitarily equivalent to that of a particle subject to only a spin-independent but θ-dependent potential with the unitary transformation relating the two being again the space-dependent rotation operator characteristic of R+D SOI.

  8. Electron Acoustic Waves in Pure Ion Plasmas

    Science.gov (United States)

    Anderegg, F.; Affolter, M.; Driscoll, C. F.; O'Neil, T. M.; Valentini, F.

    2012-10-01

    Electron Acoustic Waves (EAWs) are the low-frequency branch of near-linear Langmuir (plasma) waves: the frequency is such that the complex dielectric function (Dr, Di) has Dr= 0; and ``flattening'' of f(v) near the wave phase velocity vph gives Di=0 and eliminates Landau damping. Here, we observe standing axisymmetric EAWs in a pure ion column.footnotetextF. Anderegg, et al., Phys. Rev. Lett. 102, 095001 (2009). At low excitation amplitudes, the EAWs have vph˜1.4 v, in close agreement with near-linear theory. At moderate excitation strengths, EAW waves are observed over a range of frequencies, with 1.3 v vphvph.footnotetextF. Valentini et al., arXiv:1206.3500v1. Large amplitude EAWs have strong phase-locked harmonic content, and experiments will be compared to same-geometry simulations, and to simulations of KEENfootnotetextB. Afeyan et al., Proc. Inertial Fusion Sci. and Applications 2003, A.N.S. Monterey (2004), p. 213. waves in HEDLP geometries.

  9. Photoionization Dynamics in Pure Helium Droplets

    Energy Technology Data Exchange (ETDEWEB)

    Peterka, Darcy S.; Kim, Jeong Hyun; Wang, Chia C.; Poisson,Lionel; Neumark, Daniel M.

    2007-02-04

    The photoionization and photoelectron spectroscopy of pure He droplets are investigated at photon energies between 24.6 eV (the ionization energy of He) and 28 eV. Time-of-flight mass spectra and photoelectron images were obtained at a series of molecular beam source temperatures and pressures to assess the effect of droplet size on the photoionization dynamics. At source temperatures below 16 K, the photoelectron images are dominated by fast electrons produced via direct ionization of He atoms, with a small contribution from very slow electrons with kinetic energies below 1 meV arising from an indirect mechanism. The fast photoelectrons have as much as 0.5 eV more kinetic energy than those from atomic He at the same photon energy. This result is interpreted and simulated within the context of a 'dimer model', in which one assumes vertical ionization from two nearest neighbor He atoms to the attractive region of the He2+ potential energy curve. Possible mechanism for the slow electrons, which were also seen at energies below IE(He), are discussed, including vibrational autoionizaton of Rydberg states comprising an electron weakly bound to the surface of a large HeN+ core.

  10. Shifting from preconceptions to pure wonderment.

    Science.gov (United States)

    Porr, Caroline

    2005-07-01

    The author reflects upon her role as a public health nurse striving to attain practice authenticity. Client assessment and nursing interventions were seemingly sufficient until she became curious about 'Who is this person sitting across from me?' and 'What are her experiences in the world as a lone parent living in poverty at the margins of society?' The author begins to think that she could shift from mere client investigation to pure wonderment about the Other by imagining herself as a researcher, an explorer of another's life world. Ultimately this process enables her to enhance the 'caring' in her practice with the knowledge gained of the perceptions and meanings impoverished clients assigned to their everyday lives. Jurgen Habermas' theory of communicative competence serves as the reference map guiding exploration. The author uses Habermas' theoretical principles of intersubjective mutuality--the validity claims of comprehensibility, truth, sincerity, and legitimacy. Comprehensibility embodies understanding, an attitude of unconditional acceptance, and care respect of another's individual person and self-defined reality. Intersubjective mutuality also requires that one dwell in the moment with the Other, satisfied that communication is founded on truth. Sincerity implies fostering the Other's expression of authentic self apart from oppressive distracters. Lastly, legitimacy reconciles the author's altruistic pursuit to know the Other's ontological truth with the reality of the present world.

  11. Triplet pairing in pure neutron matter

    Science.gov (United States)

    Srinivas, Sarath; Ramanan, S.

    2016-12-01

    We study the zero-temperature BCS gaps for the triplet channel in pure neutron matter using similarity renormalization group (SRG) evolved interactions. We use the dependence of the results on the SRG resolution scale as a tool to analyze medium and many-body corrections. In particular, we study the effects of including the three-body interactions at leading order, which appear at next-to-next-to leading order (N2LO) in the chiral effective field theory (EFT), as well as that of the first-order self-energy corrections on the zero-temperature gap. In addition we also extract the transition temperature as a function of densities and verify the BCS scaling of the zero-temperature gaps to the transition temperature. We observe that the self-energy effects are very crucial in order to reduce the SRG resolution scale dependence of the results, while the three-body effects at the leading order do not change the two-body resolution scale dependence. On the other hand, the results depend strongly on the three-body cutoff, emphasizing the importance of the missing higher-order three-body effects. We also observe that self-energy effects reduce the overall gap as well as shift the gap closure to lower densities.

  12. Twofold symmetries of the pure gravity action

    Science.gov (United States)

    Cheung, Clifford; Remmen, Grant N.

    2017-01-01

    We recast the action of pure gravity into a form that is invariant under a twofold Lorentz symmetry. To derive this representation, we construct a general parameterization of all theories equivalent to the Einstein-Hilbert action up to a local field redefinition and gauge fixing. We then exploit this freedom to eliminate all interactions except those exhibiting two sets of independently contracted Lorentz indices. The resulting action is local, remarkably simple, and naturally expressed in a field basis analogous to the exponential parameterization of the nonlinear sigma model. The space of twofold Lorentz invariant field redefinitions then generates an infinite class of equivalent representations. By construction, all off-shell Feynman diagrams are twofold Lorentz invariant while all on-shell tree amplitudes are automatically twofold gauge invariant. We extend our results to curved spacetime and calculate the analogue of the Einstein equations. While these twofold invariances are hidden in the canonical approach of graviton perturbation theory, they are naturally expected given the double copy relations for scattering amplitudes in gauge theory and gravity.

  13. Non-universalities in pure gravity mediation

    Science.gov (United States)

    Evans, Jason L.; Ibe, Masahiro; Olive, Keith A.; Yanagida, Tsutomu T.

    2013-10-01

    The simplest model of pure gravity mediation contains only two free parameters: the gravitino mass and tan β. Scalar masses are universal at some high energy renormalization scale and gaugino masses are determined through anomalies and depend on the gravitino mass and the gauge couplings. This theory requires a relatively large gravitino mass ( m 3/2≳300 TeV) and a limited range in tan β≃1.7-2.5. Here we generalize the theory to allow for non-universality in the Higgs soft masses. This introduces zero, one or two new free parameters associated with Higgs soft masses. This generalization allows us to greatly increase the allowed range in tan β and it allows one to find viable solutions with lower m 3/2. The latter is important if we hope to find a low energy signal from gluinos. Some special cases of these non-universalities are suggestive of Higgs bosons as Nambu-Goldstone bosons or a partial no-scale structure for the Higgs doublets. Thus, we probe signatures at the weak scale and structures at the GUT and/or Planck scale.

  14. Non-Universalities in Pure Gravity Mediation

    CERN Document Server

    Evans, Jason L; Ibe, Masahiro; Yanagida, Tsutomu T

    2013-01-01

    The simplest model of pure gravity mediation contains only two free parameters: the gravitino mass and \\tan\\beta. Scalar masses are universal at some high energy renormalization scale and gaugino masses are determined through anomalies and depend on the gravitino mass and the gauge couplings. This theory requires a relatively large gravitino mass (m_{3/2}\\gtrsim 300\\,TeV) and a limited range in \\tan \\beta \\simeq 1.7--2.5. Here we generalize the theory to allow for non-universality in the Higgs soft masses. This introduces zero, one or two new free parameters associated with Higgs soft masses. This generalization allows us to greatly increase the allowed range in \\tan \\beta and it allows one to find viable solutions with lower m_{3/2}. The latter is important if we hope to find a low energy signal from gluinos. Some special cases of these non-universalities are suggestive of Higgs bosons as Nambu-Goldstone bosons or a partial no-scale structure for the Higgs doublets. Thus, we probe signatures at the weak scal...

  15. Pure Electric and Pure Magnetic Resonances in Near-Infrared Metal Double-Triangle Metamaterial Arrays

    Institute of Scientific and Technical Information of China (English)

    CAO Zhi-Shen; PAN Jian; CHEN Zhuo; ZHAN Peng; MIN Nai-Ben; WANG Zhen-Lin

    2011-01-01

    @@ We experimentally and numerically investigate the optical properties of metamaterial arrays composed of double partially-overlapped metallic nanotriangles fabricated by an angle-resolved nanosphere lithography.We demonstrate that each double-triangle can be viewed as an artificial magnetic element analogous to the conventional metal split-ring-resonator.It is shown that under normal-incidence conditions,individual double-triangle can exhibit a strong local magnetic resonance,but the collective response of the metamaterial arrays is purely electric because magnetic resonances of the two double-triangles in a unit cell having opposite openings are out of phase.For oblique incidences the metamaterial arrays are shown to support a pure magnetic response at the same frequency band.Therefore,switchable electric and magnetic resonances are achieved in double-triangle arrays.Moreover,both the electric and magnetic resonances axe shown to allow for a tunability over a large spectral range down to near-infrared.%We experimentally and numerically investigate the optical properties of metamaterial arrays composed of double partially-overlapped metallic nanotriangles fabricated by an angle-resolved nanosphere lithography. We demonstrate that each double-triable can be viewed as an artificial magnetic element analogous to the conventional metal split-ring-resonator. It is shown that under normal-incidence conditions, individual double-triangle can exhibit a strong local magnetic resonance, but the collective response of the metamaterial arrays is purely electric because magnetic resonances of the two double-triangles in a unit cell having opposite openings are out of phase.For oblique incidences the metamaterial arrays are shown to support a pure magnetic response at the same frequency band. Therefore, switchable electric and magnetic resonances are achieved in double-triangle arrays.Moreover, both the electric and magnetic resonances are shown to allow for a tunability over

  16. Survival analysis of pure seminoma at post-chemotherapy retroperitoneal lymph node dissection.

    Science.gov (United States)

    Rice, Kevin R; Beck, Stephen D W; Bihrle, Richard; Cary, K Clint; Einhorn, Lawrence H; Foster, Richard S

    2014-11-01

    Viable seminoma encountered at post-chemotherapy retroperitoneal lymph node dissection for pure testicular seminoma is rare due to the chemosensitivity of this germ cell tumor. In this study we define the natural history of viable seminoma at post-chemotherapy retroperitoneal lymph node dissection. The Indiana University testis cancer database was queried from 1988 to 2011 to identify all patients with primary testicular or retroperitoneal pure seminoma and who were found to have pure seminoma at post-chemotherapy retroperitoneal lymph node dissection. Clinical characteristics were reviewed and survival analysis was performed. A total of 36 patients met the study inclusion criteria. All patients received standard first line cisplatin based chemotherapy and 17 received salvage chemotherapy. The decision to proceed to retroperitoneal lymph node dissection was based on enlarging retroperitoneal mass and/or positron emission positivity in the majority of cases. Seven patients had undergone previous retroperitoneal lymph node dissection. Additional surgical procedures were required in 19 patients to achieve a complete resection. The 5-year cancer specific survival rate was 54%. However, only 9 of 36 patients remained continuously free of disease and of these patients 4 received adjuvant chemotherapy. Mean time from post-chemotherapy retroperitoneal lymph node dissection to death was 6.9 months. Second line chemotherapy, reoperative retroperitoneal lymph node dissection and earlier era of treatment were associated with poorer cancer specific survival. A total of 36 patients with pure seminoma were found to have viable pure seminoma at post-chemotherapy retroperitoneal lymph node dissection. While 5-year cancer specific survival was 54%, these surgeries are technically demanding and only a minority of patients achieves a durable cure from surgery alone. Copyright © 2014 American Urological Association Education and Research, Inc. Published by Elsevier Inc. All rights

  17. Bubbles, shocks and elementary technical trading strategies

    Science.gov (United States)

    Fry, John

    2014-01-01

    In this paper we provide a unifying framework for a set of seemingly disparate models for bubbles, shocks and elementary technical trading strategies in financial markets. Markets operate by balancing intrinsic levels of risk and return. This seemingly simple observation is commonly over-looked by academics and practitioners alike. Our model shares its origins in statistical physics with others. However, under our approach, changes in market regime can be explicitly shown to represent a phase transition from random to deterministic behaviour in prices. This structure leads to an improved physical and econometric model. We develop models for bubbles, shocks and elementary technical trading strategies. The list of empirical applications is both interesting and topical and includes real-estate bubbles and the on-going Eurozone crisis. We close by comparing the results of our model with purely qualitative findings from the finance literature.

  18. DOE technical standards list: Department of Energy standards index

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-06-01

    This technical standards list (TSL) was prepared for use by personnel involved in the selection and use of US DOE technical standards and other government and non-government standards. This TSL provides listings of current DOE technical standards, non-government standards that have been adopted by DOE, other government documents in which DOE has a recorded interest, and cancelled DOE technical standards. Standards are indexed by type in the appendices to this document. Definitions of and general guidance for the use of standards are also provided.

  19. Hanford Engineer Works technical manual

    Energy Technology Data Exchange (ETDEWEB)

    1944-05-01

    The uranium metal, as discharged from the piles in the 100 Areas, contains the alpha emitting product, plutonium, in concentration in the neighborhood of 150--250 grams per metric ton, along with similar amounts of beta and gamma fission elements. It is the purpose of the Separations Plant to effect the separation of this product from the uranium metal and fission elements, and to prepare a concentrated, relatively pure solution of plutonium nitrate as the final product of the Hanford Plant. This section of the manual discusses the chemistry of the separations process, describes the buildings and equipment provided for carrying out the various steps in the operation, and presents the detailed operating procedures used. There are included, in many instances, references to other documents presenting a more detailed view of a specific point in the process.

  20. Preparing for faster filling

    CERN Multimedia

    CERN Bulletin

    2010-01-01

    Following the programmed technical stop last week, operators focussed on preparing the machine for faster filling, which includes multibunch injection and a faster pre-cycle phase.   The LHC1 screen shot during the first multibunch injection operation. The LHC operational schedule incorporates a technical stop for preventive maintenance roughly every six weeks of stable operation, during which several interventions on the various machines are carried out. Last week these included the replacement of a faulty magnet in the SPS pre-accelerator, which required the subsequent re-setting of the system of particle extraction and transfer to the LHC. At the end of last week, all the machines were handed back for operation and work could start on accommodating all the changes made into the complex systems in order for normal operation to be resumed. These ‘recovery’ operations continued through the weekend and into this week. At the beginning of this week, operators succeeded in pro...

  1. Pure analgesics in a rheumatological outpatient clinic

    Directory of Open Access Journals (Sweden)

    M.A. Cimmino

    2011-09-01

    Full Text Available Objective: Pure analgesics are only rarely used by Italian clinicians and this holds true also for rheumatologists. This work is concerned with an evaluation of the use of analgesics in a rheumatological outpatient clinic during the period 1989-1999. Methods: The records of 1705 patients consecutively seen at the clinic were downloaded on a specifically built website. Results: 4469 visits were considered. In 260 of them (5.8%, analgesics were prescribed to 234 (13.7% patients. The number of patients with a prescription of analgesics steadily increased during the years 1989-1999. The diagnoses in patients assuming analgesics were: osteoarthritis (47.1%, inflammatory arthritis (24.2%, soft tissue rheumatisms (13.7%, nonspecific arthralgia/myalgia (7.5%, and connective tissue diseases (2.6%. Peripheral analgesics were used in 188 (82.5% patients and central analgesics were used in the remaining 40 patients (17.5%. Analgesic drugs were used mainly in degenerative joint conditions. The indications for analgesics in the 55 patients with inflammatory arthrits were: (a partial or total remission of arthritis; for this reason non-steroidal anti-inflammatory drugs were no longer required in 18 patients; (b to increase the analgesic effect of NSAIDs in 23 patients; (c contraindications to NSAIDs in 14 patients (renal failure in 2 patients, gastritis in 10, allergy and bleeding in the remaining two. Conclusions: About 14% of our outpatients were treated with analgesics with an increasing trend in the examined period. The main indications for analgesics are degenerative conditions but they can be used also in selected patients with arthritis.

  2. Peccei-Quinn symmetric pure gravity mediation

    Energy Technology Data Exchange (ETDEWEB)

    Evans, Jason L.; Olive, Keith A. [University of Minnesota, William I. Fine Theoretical Physics Institute, School of Physics and Astronomy, Minneapolis, MN (United States); Ibe, Masahiro [University of Tokyo, ICRR, Kashiwa (Japan); University of Tokyo, Kavli IPMU (WPI), TODIAS, Kashiwa (Japan); Yanagida, Tsutomu T. [University of Tokyo, Kavli IPMU (WPI), TODIAS, Kashiwa (Japan)

    2014-07-15

    Successful models of pure gravity mediation (PGM) with radiative electroweak symmetry breaking can be expressed with as few as two free parameters, which can be taken as the gravitinomass and tan β. These models easily support a 125-126 GeV Higgs mass at the expense of a scalar spectrum in the multi-TeV range and a much lighter wino as the lightest supersymmetric particle. In these models, it is also quite generic that the Higgs mixing mass parameter, μ, which is determined by the minimization of the Higgs potential is also in the multi-TeV range. For μ > 0, the thermal relic density of winos is too small to account for the darkmatter. The same is true for μ < 0 unless the gravitinomass is of order 500 TeV. Here, we consider the origin of a multi-TeV μ parameter arising from the breakdown of a Peccei-Quinn (PQ) symmetry. A coupling of the PQ-symmetry breaking field, P, to the MSSM Higgs doublets, naturally leads to a value of μ ∝ left angle P right angle {sup 2}/M{sub P} ∝ O(100) TeV and of the order that is required in PGM models. In this case, axions make up the dark matter or some fraction of the dark matter with the remainder made up from thermal or non-thermal winos. We also provide solutions to the problem of isocurvature fluctuations with axion dark matter in this context. (orig.)

  3. 25 CFR 900.146 - Is technical assistance available for waiver requests?

    Science.gov (United States)

    2010-04-01

    ... 25 Indians 2 2010-04-01 2010-04-01 false Is technical assistance available for waiver requests... EDUCATION ASSISTANCE ACT Waiver Procedures § 900.146 Is technical assistance available for waiver requests? Yes. Technical assistance is available as provided in § 900.7 to prepare a waiver request or to...

  4. On the relation between hybrid and pure spinor string theory

    Energy Technology Data Exchange (ETDEWEB)

    Gerigk, Sebastian [ETH Zuerich (Switzerland). Inst. fuer Theoretische Physik; Kirsch, Ingo [Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)

    2009-12-15

    In this paper we revisit Berkovits' pure spinor formalism in lower dimensions. We are particularly interested in relating a six-dimensional pure spinor action previously constructed in the literature to other superstring formalisms. In order to gain some insight into six-dimensional pure spinors, we first derive their action by gauge-fixing the classical six-dimensional Green-Schwarz action. We then consider a hybrid pure spinor construction in which the spacetime symmetries of six of the ten dimensions are described in pure spinor variables, while the remaining four dimensions are parameterized in terms of RNS variables. We relate this pure spinor formalism to the Berkovits-Vafa-Witten hybrid formalism of string theory on R{sup 6} x T{sup 4}. (orig.)

  5. Factors contributing to the rheology of tomato puree

    OpenAIRE

    Abson, Rachael

    2013-01-01

    Tomato (Solanum Iycopersicum) puree is created by homogenising the flesh of tomato fruits. The viscosity of this material and the fibrous content is of commercial interest. Tomato puree consists of suspended particles (consisting of whole cells, broken cells and cellular fragments) in an aqueous serum. The contribution of the non-soluble and soluble material to tomato puree rheology was studied with reference to the varying composition of solids and firmness of tomato fruit at four stages of ...

  6. Are all noisy quantum states obtained from pure ones?

    CERN Document Server

    Henderson, L; Popescu, S

    2001-01-01

    We ask what type of mixed quantum states can arise when a number of separated parties start by sharing a pure quantum state and then this pure state becomes contaminated by noise. We show that not all mixed states arise in this way. This is even the case if the separated parties actively try to degrade their initial pure state by arbitrary local actions and classical communication.

  7. 21 CFR 184.1985 - Aminopeptidase enzyme preparation derived from lactococcus lactis.

    Science.gov (United States)

    2010-04-01

    ...) and other peptidases that hydrolyze milk proteins. The preparation is produced by pure culture... manufacture of cheddar cheese, in accordance with § 133.113 of this chapter, and in the preparation of...

  8. Building technical services - Compact equipment for heating, hot water preparation, ventilation and cooling - Final report; Haustechnik - Kompaktgeraete (Heizen, Warmwasser, Lueften, Kuehlen - alles aus einem). Erkenntnisse aus der Praxis - Schlussbericht

    Energy Technology Data Exchange (ETDEWEB)

    Haessig, W.; Streit, S. [Haessig Sustech GmbH, Uster (Switzerland); Helfenfinger, D.; Keller, P. [Hochschule fuer Technik und Architektur Luzern (HSLU), Luzern (Switzerland)

    2009-06-15

    This comprehensive final report for the Swiss Federal Office of Energy (SFOE) presents and discusses the knowledge gained in practice concerning compact equipment that can be used for heating, hot water preparation, ventilation and cooling. Such units combine heat-pumps and the further equipment necessary. Data on various factors were collected over a period of one year in three apartment blocks that meet Swiss Minergie-P very low energy consumption standards. Apart from the above mentioned factors, the study also considered humidity and carbon dioxide levels in the apartments and inhabitant behaviour. The authors note that the energy consumption of several apartments fell below the Minergie-P limiting, annual value of 30 kWh/m2. An increase in electricity consumption dependent on room temperatures is noted and commented on. The economic feasibility of Minergie-P and so-called passive housing is commented on.

  9. Explicit training in human values and social attitudes of future engineers in Spain : commentary on "preparing to understand and use science in the real world: interdisciplinary study concentrations at the technical University of Darmstadt".

    Science.gov (United States)

    Fabregat, Jaime

    2013-12-01

    In Spain before the 1990s there was no clear and explicit comprehensive training for future engineers with regard to social responsibility and social commitment. Following the Spanish university curricular reform, which began in the early 1990s, a number of optional subjects became available to students, concerning science, technology and society (STS), international cooperation, the environment and sustainability. The latest redefinition of the Spanish curriculum in line with the Bologna agreements has reduced the number of non-obligatory subjects, but could lead to improving preparation for social responsibility due to the requirement that the design of curricula and the assessment of students should be based on competencies, some of which include human values and attitudes.

  10. ActionScript Developer's Guide to PureMVC

    CERN Document Server

    Hall, Cliff

    2011-01-01

    Gain hands-on experience with PureMVC, the popular open source framework for developing maintainable applications with a Model-View-Controller architecture. In this concise guide, PureMVC creator Cliff Hall teaches the fundamentals of PureMVC development by walking you through the construction of a complete non-trivial Adobe AIR application. Through clear explanations and numerous ActionScript code examples, you'll learn best practices for using the framework's classes in your day-to-day work. Discover how PureMVC enables you to focus on the purpose and scope of your application, while the f

  11. Typical pure nonequilibrium steady states and irreversibility for quantum transport.

    Science.gov (United States)

    Monnai, Takaaki; Yuasa, Kazuya

    2016-07-01

    It is known that each single typical pure state in an energy shell of a large isolated quantum system well represents a thermal equilibrium state of the system. We show that such typicality holds also for nonequilibrium steady states (NESS's). We consider a small quantum system coupled to multiple infinite reservoirs. In the long run, the total system reaches a unique NESS. We identify a large Hilbert space from which pure states of the system are to be sampled randomly and show that the typical pure states well describe the NESS. We also point out that the irreversible relaxation to the unique NESS is important to the typicality of the pure NESS's.

  12. Typical pure nonequilibrium steady states and irreversibility for quantum transport

    Science.gov (United States)

    Monnai, Takaaki; Yuasa, Kazuya

    2016-07-01

    It is known that each single typical pure state in an energy shell of a large isolated quantum system well represents a thermal equilibrium state of the system. We show that such typicality holds also for nonequilibrium steady states (NESS's). We consider a small quantum system coupled to multiple infinite reservoirs. In the long run, the total system reaches a unique NESS. We identify a large Hilbert space from which pure states of the system are to be sampled randomly and show that the typical pure states well describe the NESS. We also point out that the irreversible relaxation to the unique NESS is important to the typicality of the pure NESS's.

  13. FT-IR microspectroscopy in rapid identification of bacteria in pure and mixed culture

    Science.gov (United States)

    Fontoura, Inglid; Belo, Ricardo; Sakane, Kumiko; Cardoso, Maria Angélica Gargione; Khouri, Sônia; Uehara, Mituo; Raniero, Leandro; Martin, Airton A.

    2010-02-01

    In recent years FT-IR microspectroscopy has been developed for microbiology analysis and applied successfully in pure cultures of microorganisms to rapidly identify strains of bacteria, yeasts and fungi. The investigation and characterization of microorganism mixed cultures is also of growing importance, especially in hospitals where it is common to poly-microbial infections. In this work, the rapid identification of bacteria in pure and mixed cultures was studied. The bacteria were obtained from the Institute Oswaldo Cruz culture collection at Brazil. Escherichia coli ATCC 10799 and Staphylococcus aureus ATCC 14456 were analyzed, 3 inoculations were examined in triplicate: Escherichia coli, Staphylococcus aureus and a mixed culture of them. The inoculations were prepared according to McFarland 0.5, incubated at 37 ° C for 6 hours, diluted in saline, placed in the CaF2 window and store for one hour at 50°C to obtain thin film. The measurement was performed by Spectrum Spotlight 400 (Perkin-Elmer) equipment in the range of 4000-900 cm-1, with 32 scans using a transmittance technique with point and image modes. The data were processed (baseline, normalization, calculation of first derivate followed by smoothing with 9 point using a Savitzky-Golay algorithm) and a cluster analysis were done by Ward's algorithm and an excellent discrimination between pure and mixed culture was obtained. Our preliminary results indicate that the FT-IR microspectroscopy associated with cluster analysis can be used to discriminate between pure and mixed culture.

  14. Nonisothermal reactors for the production of pure water from peritoneal dialysis waste waters.

    Science.gov (United States)

    Diano, N; Ettari, G; Grano, V; Gaeta, F S; Rossi, S; Bencivenga, U; D'Alterio, C; Ruocco, G; Mita, L; De Santo, N G; Canciglia, P; Mita, D G

    2007-01-01

    The diffusion of peritoneal dialysis (PD) at home is somewhat restricted by the difficulty of transport and storage of a large amount of dialytic solutions. This problem is exacerbated in the case of hemodialysis. With the aim of producing pure water to be used in preparing the solution for peritoneal dialysis, or for hemodialysis in general, as one example, we purified the spent dialysate solution from PD. Experiments were carried out with 24 dialysate solutions taken from 8 patients. Pure water was obtained by means of a thermodialysis process in a hollow fiber reactor operating under nonisothermal conditions. Results show that the yield of the nonisothermal process is dependent on the temperature difference applied across the hydrophobic membranes. The production of pure water per square meter of membrane and per hour was equal to 0.55 or 1.2 or 2.0 liters, with a temperature difference of 11 degrees C or 21 degrees C or 28 degrees C, respectively. These results encourage the use of the thermodialysis process in the production of pure water for clinical uses.

  15. Transformation of technical infrastructure

    DEFF Research Database (Denmark)

    Nielsen, Susanne Balslev

    1998-01-01

    article about the need of new planning forums in order to initiate transformations with in management of large technical systems for energy, waste and water supply.......article about the need of new planning forums in order to initiate transformations with in management of large technical systems for energy, waste and water supply....

  16. Technical Communication in Japan

    Institute of Scientific and Technical Information of China (English)

    Hiraku Amemiya

    2010-01-01

    @@ 1.Characteristics of Japanese Technical Communication(TC) The visual orientation of information characterizes Japanese technical communication.Manuals that have won Japan Manual Awards in the past have employed various designs with graphical presentations that evoke the style of popular magazines.

  17. Technical Manual. The ACT®

    Science.gov (United States)

    ACT, Inc., 2014

    2014-01-01

    This manual contains technical information about the ACT® college readiness assessment. The principal purpose of this manual is to document the technical characteristics of the ACT in light of its intended purposes. ACT regularly conducts research as part of the ongoing formative evaluation of its programs. The research is intended to ensure that…

  18. Technical Program, 1974,

    Science.gov (United States)

    proposed AGARD Technical Program and Budget for 1974. The report reflects the program that was unanimously approved by the AGARD National Delegates Board...required to support the proposed 1974 AGARD technical program is presented in Section 3. The separate publications summary shown in Section 4 identifies by

  19. The Research on Analytical Method of Diquat Dibromide in Diquat Technical Concentrates

    Directory of Open Access Journals (Sweden)

    Gu Bing

    2016-01-01

    Full Text Available The technical concentrates (TK is prepared by technical material (TC, the content is lower than TC, it can be used for the preparation of pesticide formulations. Diquat TK is generally brown or dark brown liquid. In recent years, it develops rapidly as herbicides. This paper mainly introduces the research on analyses of the effective components in diquat TK.

  20. Steam reforming of technical bioethanol for hydrogen production

    DEFF Research Database (Denmark)

    Rass-Hansen, Jeppe; Johansson, Roger; Møller, Martin Hulbek;

    2008-01-01

    Essentially all work on ethanol steam reforming so far has been carried out using simulated bioethanol feedstocks, which means pure ethanol mixed with water. However, technical bioethanol consists of a lot of different components including sugars, which cannot be easily vaporized and steam reformed....... For ethanol steam reforming to be of practical interest, it is important to avoid the energy-intensive purification steps to fuel grade ethanol. Therefore, it is imperative to analyze how technical bioethanol, with the relevant impurities, reacts during the steam reforming process. We show how three different...... distillation fractions of technical 2nd generation bioethanol, produced in a pilot plant, influence the performance of nickel- and ruthenium-based catalysts during steam reforming, and we discuss what is required to obtain high activity and long catalyst lifetime. We conclude that the use of technical...

  1. Pure Culture Fermentation of Green Olives1

    Science.gov (United States)

    Etchells, J. L.; Borg, A. F.; Kittel, I. D.; Bell, T. A.; Fleming, H. P.

    1966-01-01

    The method previously developed by us for the pure-culture fermentation of brined cucumbers and other vegetables has been applied successfully to Manzanillo variety olives. Field-run grade fruit was processed first by conventional procedures to remove most of the bitterness. Then the relative abilities of Lactobacillus plantarum, L. brevis, Pediococcus cerevisiae, and Leuconostoc mesenteroides to become established and produce acid in both heat-shocked (74 C for 3 min) and unheated olives, brined at 4.7 to 5.9% NaCl (w/v basis), were evaluated. The heat-shock treatment not only proved effective in ridding the fruit of naturally occurring, interfering, and competitive microbial groups prior to brining and inoculation, but also made the olives highly fermentable with respect to growth and acid production by the introduced culture, particularly L. plantarum. Of the four species used as inocula, L. plantarum was by far the most vigorous in fermentation ability. It consistently produced the highest levels of brine acidity (1.0 to 1.2% calculated as lactic acid) and the lowest pH values (3.8 to 3.9) during the fermentation of heat-shocked olives. Also, L. plantarum completely dominated fermentations when used in two-species (with P. cerevisiae) and three-species (with P. cerevisiae and L. brevis) combinations as inocula. In contrast, when L. plantarum was inoculated into the brines of unheated olives it failed to become properly established; the same was true for the other species tested, but even to a more pronounced degree. L. brevis was the only species used that failed to develop in brines of both heat-shocked and unheated olives. Modification of the curing brine by the addition of lactic acid at the outset, either with or without dextrose, led to a much earlier onset of fermentation with accompanying acid development, as compared to treatments with dextrose alone or nonadditive controls. Reasons for the marked improvement of the fermentability of Manzanillo olives

  2. Technical Agency in Practice

    DEFF Research Database (Denmark)

    Krummheuer, Antonia Lina

    2015-01-01

    The paper combines the discussion of technical agency and hybrid networks of Actor-Network Theory (ANT) with an ethnomethodological/conversation analytical (EMCA) perspective on situated practices in which participants ascribe agency to technical artefacts. While ANT works with (ethnographic......) description of hybrid networks in which human and non-human actants are granted agency without differentiating different kinds of agency, EMCA focuses on the member's perspectives and the situated construction of technical agency that is made relevant within an ongoing interaction. Based on an EMCA analysis...... of three video recordings of situations in which technical agency is made relevant by the human participants, the paper demonstrates different ways in which agency is granted to technical artefacts. Human participants can treat a technology as communication partner, as an active part (and actant...

  3. Technical Agency in Practice

    DEFF Research Database (Denmark)

    Krummheuer, Antonia Lina

    2015-01-01

    ) description of hybrid networks in which human and non-human actants are granted agency without differentiating different kinds of agency, EMCA focuses on the member's perspectives and the situated construction of technical agency that is made relevant within an ongoing interaction. Based on an EMCA analysis......The paper combines the discussion of technical agency and hybrid networks of Actor-Network Theory (ANT) with an ethnomethodological/conversation analytical (EMCA) perspective on situated practices in which participants ascribe agency to technical artefacts. While ANT works with (ethnographic...... of three video recordings of situations in which technical agency is made relevant by the human participants, the paper demonstrates different ways in which agency is granted to technical artefacts. Human participants can treat a technology as communication partner, as an active part (and actant...

  4. On a Canonical Quantization of 3D Anti de Sitter Pure Gravity

    CERN Document Server

    Kim, Jihun

    2015-01-01

    We perform a canonical quantization of pure gravity on AdS3 using as a technical tool its equivalence at the classical level with a Chern-Simons theory with gauge group SL(2,R)xSL(2,R). We first quantize the theory canonically on an asymptotically AdS space --which is topologically the real line times a Riemann surface with one connected boundary. Using the "constrain first" approach we reduce canonical quantization to quantization of orbits of the Virasoro group and Kaehler quantization of Teichmuller space. After explicitly computing the Kaehler form for the torus with one boundary component and after extending that result to higher genus, we recover known results, such as that wave functions of SL(2,R) Chern-Simons theory are conformal blocks. We find new restrictions on the Hilbert space of pure gravity by imposing invariance under large diffeomorphisms and normalizability of the wave function. The Hilbert space of pure gravity is shown to be the target space of Conformal Field Theories with continuous sp...

  5. Technical Writing in the Netherlands.

    Science.gov (United States)

    de Vet, Dominique M. W.

    1996-01-01

    Discusses the technical writing profession in the Netherlands. Bases the discussion on two studies--one directed at technical freelancers and another directed at technical writers working within organizations. Gives a profile of technical writers in the Netherlands; an impression of the problems technical writers in organizations deal with;…

  6. Optimizing the Preparation Technics forLactobacillus plantarum-fermented Medlar-carrot Juice%植物乳杆菌发酵枸杞胡萝卜汁工艺的优化

    Institute of Scientific and Technical Information of China (English)

    安兴娟; 张瑶; 姬阿美; 马翠萍; 牛天鸣; 罗学刚

    2016-01-01

    To establish the optimum technics forL.plantarum-fermented fruit-vegetable juice,the juice of medlar and car-rot was used in this research as the raw material andL.plantarumCGMCC8198,as the starter strain,and then single factor experiments and orthogonal experiments were performed.The optimum fermentation conditions were as follows:the radio of medlar juice to carrot juice was 3∶7,saccharose was 6%,,gelatin 0.03%,,carboxymethylcellulose sodium(CMC-Na)0.02%,,andL.plantarumCGMCC8198 with an inoculation amount of 5%,.The optimum fermentation was carried out at 30,℃ for 5,h and followed by mature treatment at 0~4,℃ for 20,h.The fermented fruit-vegetable juice was orangein color and homodispersed.It tastes sweet,sour and soft,and has the unique flavor of carrot and medlar.Using the plate pour-ing method,we found the living bacterium number was 7.1×107,mL-1 in the final product.In addition,the detection with the biosensor analyzer and the viscosimeter showed that the content of glucose is 0.098%.%以枸杞和胡萝卜为原料、植物乳杆菌(Lactobacillus plantarum)CGMCC8198为发酵菌株,通过单因素实验及正交实验,优化建立了植物乳杆菌发酵果蔬汁的制作工艺.发酵原料的最佳配比为枸杞汁与胡萝卜汁体积比3﹕7、蔗糖6%,、明胶0.03%,、羧甲基纤维素钠(CMC-Na)0.02%、L. plantarum CGMCC8198接种量5%,,30,℃发酵5,h后转0~4,℃熟化处理20,h.由此所得发酵果蔬汁呈橘红色,相态均匀;口感酸甜柔和、爽口,具有胡萝卜和枸杞特有的香味.利用倾注法测得活菌数为7.1×107,mL-1,生物传感分析仪测得葡萄糖含量为0.098%,.

  7. Investigation into the Advantages of Pure Perovskite Film without PbI2 for High Performance Solar Cell.

    Science.gov (United States)

    Kwon, Uisik; Hasan, Md Mehedi; Yin, Wenping; Kim, Dasom; Ha, Na Young; Lee, Soonil; Ahn, Tae Kyu; Park, Hui Joon

    2016-10-27

    In CH3NH3PbI3-based high efficiency perovskite solar cells (PSCs), tiny amount of PbI2 impurity was often found with the perovskite crystal. However, for two-step solution process-based perovskite films, most of findings have been based on the films having different morphologies between with and without PbI2. This was mainly due to the inferior morphology of pure perovskite film without PbI2, inevitably produced when the remaining PbI2 forced to be converted to perovskite, so advantages of pure perovskite photoactive layer without PbI2 impurity have been overlooked. In this work, we designed a printing-based two-step process, which could not only generate pure perovskite crystal without PbI2, but also provide uniform and full surface coverage perovskite film, of which nanoscale morphology was comparable to that prepared by conventional two-step solution process having residual PbI2. Our results showed that, in two-step solution process-based PSC, pure perovskite had better photon absorption and longer carrier lifetime, leading to superior photocurrent generation with higher power conversion efficiency. Furthermore, this process was further applicable to prepare mixed phase pure perovskite crystal without PbI2 impurity, and we showed that the additional merits such as extended absorption to longer wavelength, increased carrier lifetime and reduced carrier recombination could be secured.

  8. Investigation into the Advantages of Pure Perovskite Film without PbI2 for High Performance Solar Cell

    Science.gov (United States)

    Kwon, Uisik; Hasan, Md Mehedi; Yin, Wenping; Kim, Dasom; Ha, Na Young; Lee, Soonil; Ahn, Tae Kyu; Park, Hui Joon

    2016-10-01

    In CH3NH3PbI3-based high efficiency perovskite solar cells (PSCs), tiny amount of PbI2 impurity was often found with the perovskite crystal. However, for two-step solution process-based perovskite films, most of findings have been based on the films having different morphologies between with and without PbI2. This was mainly due to the inferior morphology of pure perovskite film without PbI2, inevitably produced when the remaining PbI2 forced to be converted to perovskite, so advantages of pure perovskite photoactive layer without PbI2 impurity have been overlooked. In this work, we designed a printing-based two-step process, which could not only generate pure perovskite crystal without PbI2, but also provide uniform and full surface coverage perovskite film, of which nanoscale morphology was comparable to that prepared by conventional two-step solution process having residual PbI2. Our results showed that, in two-step solution process-based PSC, pure perovskite had better photon absorption and longer carrier lifetime, leading to superior photocurrent generation with higher power conversion efficiency. Furthermore, this process was further applicable to prepare mixed phase pure perovskite crystal without PbI2 impurity, and we showed that the additional merits such as extended absorption to longer wavelength, increased carrier lifetime and reduced carrier recombination could be secured.

  9. Investigation into the Advantages of Pure Perovskite Film without PbI2 for High Performance Solar Cell

    Science.gov (United States)

    Kwon, Uisik; Hasan, Md Mehedi; Yin, Wenping; Kim, Dasom; Ha, Na Young; Lee, Soonil; Ahn, Tae Kyu; Park, Hui Joon

    2016-01-01

    In CH3NH3PbI3-based high efficiency perovskite solar cells (PSCs), tiny amount of PbI2 impurity was often found with the perovskite crystal. However, for two-step solution process-based perovskite films, most of findings have been based on the films having different morphologies between with and without PbI2. This was mainly due to the inferior morphology of pure perovskite film without PbI2, inevitably produced when the remaining PbI2 forced to be converted to perovskite, so advantages of pure perovskite photoactive layer without PbI2 impurity have been overlooked. In this work, we designed a printing-based two-step process, which could not only generate pure perovskite crystal without PbI2, but also provide uniform and full surface coverage perovskite film, of which nanoscale morphology was comparable to that prepared by conventional two-step solution process having residual PbI2. Our results showed that, in two-step solution process-based PSC, pure perovskite had better photon absorption and longer carrier lifetime, leading to superior photocurrent generation with higher power conversion efficiency. Furthermore, this process was further applicable to prepare mixed phase pure perovskite crystal without PbI2 impurity, and we showed that the additional merits such as extended absorption to longer wavelength, increased carrier lifetime and reduced carrier recombination could be secured. PMID:27786257

  10. Dislocation development in V-5CR-5TI and pure vanadium

    Energy Technology Data Exchange (ETDEWEB)

    Gelles, D.S. [Pacific Northwest Lab., Richland, WA (United States); Grossbeck, M.L. [Oak Ridge National Lab., TN (United States)

    1995-04-01

    The objective of this work is to explain notch sensitivity noted in the candidate alloy V-5Cr-5Ti. Microstructural examinations have been performed on deformed tensile specimens of V-5Cr-5Ti and pure vanadium in order to explain notch sensitivity noted in the candidate alloy V-5Cr-5Ti. SS-3 tensile specimens have been prepared, stress relieved and deformed to 5% strain. The resulting deformation structures have been examined by transmission electron microscopy. It is found that 5% deformation in V-5Cr-5Ti produces a higher dislocation density consisting of long straight dislocations, typical of Stage II, and many small loops, whereas in pure vanadium, the dislocation arrangements are more complex, typical of Stage III, and the small loops are at a lower density.

  11. Ultra-pure, water-dispersed Au nanoparticles produced by femtosecond laser ablation and fragmentation

    Science.gov (United States)

    Kubiliūtė, Reda; Maximova, Ksenia A; Lajevardipour, Alireza; Yong, Jiawey; Hartley, Jennifer S; Mohsin, Abu SM; Blandin, Pierre; Chon, James WM; Sentis, Marc; Stoddart, Paul R; Kabashin, Andrei; Rotomskis, Ričardas; Clayton, Andrew HA; Juodkazis, Saulius

    2013-01-01

    Aqueous solutions of ultra-pure gold nanoparticles have been prepared by methods of femtosecond laser ablation from a solid target and fragmentation from already formed colloids. Despite the absence of protecting ligands, the solutions could be (1) fairly stable and poly size-dispersed; or (2) very stable and monodispersed, for the two fabrication modalities, respectively. Fluorescence quenching behavior and its intricacies were revealed by fluorescence lifetime imaging microscopy in rhodamine 6G water solution. We show that surface-enhanced Raman scattering of rhodamine 6G on gold nanoparticles can be detected with high fidelity down to micromolar concentrations using the nanoparticles. Application potential of pure gold nanoparticles with polydispersed and nearly monodispersed size distributions are discussed. PMID:23888114

  12. Espresso beverages of pure origin coffee: mineral characterization, contribution for mineral intake and geographical discrimination.

    Science.gov (United States)

    Oliveira, Marta; Ramos, Sandra; Delerue-Matos, Cristina; Morais, Simone

    2015-06-15

    Espresso coffee beverages prepared from pure origin roasted ground coffees from the major world growing regions (Brazil, Ethiopia, Colombia, India, Mexico, Honduras, Guatemala, Papua New Guinea, Kenya, Cuba, Timor, Mussulo and China) were characterized and compared in terms of their mineral content. Regular consumption of one cup of espresso contributes to a daily mineral intake varying from 0.002% (sodium; Central America) to 8.73% (potassium; Asia). The mineral profiles of the espresso beverages revealed significant inter- and intra-continental differences. South American pure origin coffees are on average richer in the analyzed elements except for calcium, while samples from Central America have generally lower mineral amounts (except for manganese). Manganese displayed significant differences (pcountries of each characterized continent. Intercontinental and inter-country discrimination between the major world coffee producers were achieved by applying canonical discriminant analysis. Manganese and calcium were found to be the best chemical descriptors for origin.

  13. Auditory Repetition Priming Is Impaired in Pure Alexic Patients

    Science.gov (United States)

    Swick, Diane; Miller, Kimberly M.; Larsen, Jary

    2004-01-01

    Alexia without agraphia, or ''pure'' alexia, is an acquired impairment in reading that leaves writing skills intact. Repetition priming for visually presented words is diminished in pure alexia. However, it is not possible to verify whether this priming deficit is modality-specific or modality independent because reading abilities are compromised.…

  14. AdS pure spinor superstring in constant backgrounds

    Energy Technology Data Exchange (ETDEWEB)

    Chandia, Osvaldo [Departamento de Ciencias, Facultad de Artes Liberales, Universidad Adolfo Ibáñez,Facultad de Ingeniería y Ciencias, Universidad Adolfo Ibáñez,Diagonal Las Torres 2640, Peñalolén, Santiago (Chile); Bevilaqua, L. Ibiapina [Escola de Ciências e Tecnologia, Universidade Federal do Rio Grande do Norte,Caixa Postal 1524, 59072-970, Natal, RN (Brazil); Vallilo, Brenno Carlini [Facultad de Ciencias Exactas, Departamento de Ciencias Físicas, Universidad Andres Bello,Republica 220, Santiago (Chile)

    2014-06-05

    In this paper we study the pure spinor formulation of the superstring in AdS{sub 5}×S{sup 5} around point particle solutions of the classical equations of motion. As a particular example we quantize the pure spinor string in the BMN background.

  15. The study of antioxidant activity of multicomponent vegetable puree

    Directory of Open Access Journals (Sweden)

    A. V. Trushechkin

    2013-01-01

    Full Text Available Studied the antioxidant activity of multicomponent vegetable puree, consisting of 20 % of eggplant, 20 % of zucchini, 16 % of bell peppers, 15 % of tomatoes, 14 % of carrots, 10 % of onions and 5 % of garlic. These results showed an increase in concentration of the antioxidant activity of puree and, consequently, increase its quality.

  16. Keeping consumers safe: food providers' perspectives on pureed food.

    Science.gov (United States)

    Keller, Heather H; Duizer, Lisa M

    2014-01-01

    Twelve focus groups were conducted in five sites with 80 allied health providers to identify their perspectives on providing pureed food to consumers. Thematic care analysis was completed to summarize and interpret these data. Providers' greatest concern was keeping consumers safe, and the right texture was prioritized over sensory appeal and acceptance. Providers recognized that these foods impacted the quality of life of consumers and worked to rationalize these diets with residents/patients and their families. In addition, offering foods they knew to be poorly accepted affected their self-concept as providers. As a result of these challenges, they did whatever they could in the kitchen and tableside to promote intake of pureed foods. Those in the "food chain" of pureed food provision suggested several ways to further improve these products. Greater communication between those who assist consumers with eating and those who produce the pureed food they consume is needed to promote acceptable pureed products.

  17. Behavior of CaO and Calcium in pure Magnesium

    Institute of Scientific and Technical Information of China (English)

    HA Seong-Ho; LEE Jin-Kyu; JO Hyung-Ho; JUNG Seung-Boo; KIM Shae K.

    2006-01-01

    Mg alloys exhibit a number of good properties such as low density, good castability and high specific strength.However, molten Mg and Mg alloys are ignited without the melt protective gases during melting and casting process due to their high reactivity.The purpose of this study is to investigate effects of Ca and CaO on pure Mg through microstructure observation, ignition test and phase analysis.With increasing Ca and CaO contents, the ignition resistance of Ca or CaO added pure Mg is increased and the grains are refined.As results of XRD and EDS, CaO is reduced to Ca in CaO added pure Mg.Mg2Ca phase is formed even in 0.1 wt.%CaO added pure Mg by reduction mechanism, while Mg2Ca phase is formed over 1.35 wt.% Ca added pure Mg.

  18. Milestones for National Technical

    Institute of Scientific and Technical Information of China (English)

    2012-01-01

    The first session of National Technical Committee of Auto Standardization was established onApri128,1988. The first session of National Technical Committee of Auto Standardization (SAC/TC 114)was established in Beijing on April 28,1988,under the approval of the National Bureau of Standards at that time,with the official from China Association of Automobile Manufacturers as its director.It played a very impoorant role,not only in the unified management of auto standards but also in the technical work of the management of auto products.

  19. The Socio-Technical Man

    Science.gov (United States)

    Moreno, Yamir

    In the last 20 years or so, the field of complexity science has entered a new age. The combination of new theoretical insights and the data revolution has prepared the ground for a number of conceptual milestones in many disciplines as diverse as biology, physics, engineering, and economic and social sciences. At the same time, we have been able to identify new challenges whose solutions will confer the science of complex systems an unprecedented applied dimension. Here I would like to focus on one of these challenges: the socio-technical man. With the ever-increasing growth of both the world population and new technologies, it is fundamental for the well-being of humanity and our society to understand how humans interact among them and with the new technological environment...

  20. Earth-covered buildings: technical notes

    Energy Technology Data Exchange (ETDEWEB)

    Moreland, F L; Higgs, F; Shih, J [eds.

    1978-01-01

    John Cable, Architectural and Engineering Systems Branch, Division of Buildings and Community Systems, Department of Energy, kicked off the conference and spelled out the role of DOE in this area. One of his points was that the technical problems are easier than the institutional problems. A separate abstract was prepared for each of the 18 papers of this volume; all of the abstracts will appear in Energy Research Abstracts (ERA), and 16 were selected for Energy Abstractss for Policy Analysis (EAPA). (DCK)

  1. NCDC Technical Reports

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NCDC Technical Reports is a set of retrospective analyses produced by the Research Customer Service Group and the National Climatic Data Center from 1995 to 2008....

  2. Technical Agency in Practice

    DEFF Research Database (Denmark)

    Krummheuer, Antonia Lina

    2015-01-01

    ) description of hybrid networks in which human and non-human actants are granted agency without differentiating different kinds of agency, EMCA focuses on the member's perspectives and the situated construction of technical agency that is made relevant within an ongoing interaction. Based on an EMCA analysis...... of three video recordings of situations in which technical agency is made relevant by the human participants, the paper demonstrates different ways in which agency is granted to technical artefacts. Human participants can treat a technology as communication partner, as an active part (and actant...... in which the human participants orient towards the artefact in different ways; thereby, the construction of technical agency can shift from moment to moment....

  3. Superfund Technical Assistance Grants

    Data.gov (United States)

    U.S. Environmental Protection Agency — This asset includes data related to the Superfund Technical Assistance Grant program, including grant number, award amounts, award dates, period of performance,...

  4. OSH technical reference manual

    Energy Technology Data Exchange (ETDEWEB)

    1993-11-01

    In an evaluation of the Department of Energy (DOE) Occupational Safety and Health programs for government-owned contractor-operated (GOCO) activities, the Department of Labor`s Occupational Safety and Health Administration (OSHA) recommended a technical information exchange program. The intent was to share written safety and health programs, plans, training manuals, and materials within the entire DOE community. The OSH Technical Reference (OTR) helps support the secretary`s response to the OSHA finding by providing a one-stop resource and referral for technical information that relates to safe operations and practice. It also serves as a technical information exchange tool to reference DOE-wide materials pertinent to specific safety topics and, with some modification, as a training aid. The OTR bridges the gap between general safety documents and very specific requirements documents. It is tailored to the DOE community and incorporates DOE field experience.

  5. Pure or Compound Dualism? Considering Afresh the Prospects of Pure Substance Dualism

    Directory of Open Access Journals (Sweden)

    Joshua Ryan Farris

    2013-06-01

    Full Text Available Substance dualism has received much attention from philosophers and theologians in contemporary literature. Whilst it may have been fashionable in the recent past to dismiss substance dualism as an unviable and academically absurd position to hold, this is no longer the case. My contention is not so much the merits of substance dualism in general, but a more specified variation of substance dualism. My specific contribution to the literature in this article is that I argue for the viability of pure substance dualism as a more satisfactory option in contrast to compound or composite varieties of substance dualism. I put forth one argument and tease out the implications that make compound dualism less than satisfactory. I conclude that, minimally, more work is required on compound variations of dualism to make it a more appealing and a philosophically satisfactory option.

  6. Technical Report Writing Today

    DEFF Research Database (Denmark)

    Riordan, Daniel G.

    2014-01-01

    Section 1: Technical Communication Basics (8 chapters on tech com, audiences, tech com process, tech com style, researching, designing pages, using visual aids, describing). Section 2: Technical Communication Applications (7 chapters on sets of instructions, informal reports and email, developing...... websites/using social media, formal reports, recommendation and feasibility reports, proposals, user manuals). Section 3: Professional Communication (2 chapters and 2 appendices on presentations, job application materials, brief handbook for tech writers, documenting sources)....

  7. Technical Report Writing Today

    DEFF Research Database (Denmark)

    Riordan, Daniel G.

    2014-01-01

    Section 1: Technical Communication Basics (8 chapters on tech com, audiences, tech com process, tech com style, researching, designing pages, using visual aids, describing). Section 2: Technical Communication Applications (7 chapters on sets of instructions, informal reports and email, developing...... websites/using social media, formal reports, recommendation and feasibility reports, proposals, user manuals). Section 3: Professional Communication (2 chapters and 2 appendices on presentations, job application materials, brief handbook for tech writers, documenting sources)....

  8. Yucca Mountain Climate Technical Support Representative

    Energy Technology Data Exchange (ETDEWEB)

    Sharpe, Saxon E

    2007-10-23

    The primary objective of Project Activity ORD-FY04-012, “Yucca Mountain Climate Technical Support Representative,” was to provide the Office of Civilian Radioactive Waste Management (OCRWM) with expertise on past, present, and future climate scenarios and to support the technical elements of the Yucca Mountain Project (YMP) climate program. The Climate Technical Support Representative was to explain, defend, and interpret the YMP climate program to the various audiences during Site Recommendation and License Application. This technical support representative was to support DOE management in the preparation and review of documents, and to participate in comment response for the Final Environmental Impact Statement, the Site Recommendation Hearings, the NRC Sufficiency Comments, and other forums as designated by DOE management. Because the activity was terminated 12 months early and experience a 27% reduction in budget, it was not possible to complete all components of the tasks as originally envisioned. Activities not completed include the qualification of climate datasets and the production of a qualified technical report. The following final report is an unqualified summary of the activities that were completed given the reduced time and funding.

  9. [The left central gyral lesion and pure anarthria].

    Science.gov (United States)

    Tabuchi, M; Odashima, K; Fujii, T; Suzuki, K; Saitou, J; Yamadori, A

    2000-05-01

    We report a very rare case of pure anarthria with lesion analysis. A 44-year-old right-handed man suffered from a cerebral infarction with a mild right hemiparesis and speech disturbance. An MRI of the brain 1.5 months post onset revealed a lesion confined to the left central gyrus. One month after the onset, his spontaneous speech was dysprosodic and laborious. It was contaminated with dysarthria and phonological paraphasias. However, language comprehension, repetition and naming abilities were normal. Most remarkably he showed no impairment in writing with his left hand. Over the following months, his difficulties in verbal output showed general amelioration, but the isolated impairment in the domain of articulation characterized by dysprosody, dysarthria, and phonological paraphasia persisted. As for the symptomatology of pure anarthria resulting from precentral gyral lesions, there have been controversies about its pureness. Some argue that the so called pure anarthria always shows some degree of writing disturbances, albeit mild in degree. Others maintain there certainly exists the pure type without any signs of agraphia. In the present case lesions were limited to the central gyrus but spared the lowest opercular portion. The previous reports of pure anarthria that had mild agraphia all had lesions involving the opercular portion. We conclude the sparing of this area is most likely related with sparing of writing capacity in pure anarthria.

  10. 78 FR 27963 - Reliability Technical Conference; Notice of Technical Conference

    Science.gov (United States)

    2013-05-13

    ... Energy Regulatory Commission Reliability Technical Conference; Notice of Technical Conference Take notice that the Federal Energy Regulatory Commission will hold a Technical Conference on Tuesday, July 9, 2013... to the webcast. The Capitol Connection provides technical support for webcasts and offers the...

  11. CO Gas Sensing Properties of Pure and Cu-Incorporated SnO2 Nanoparticles: A Study of Cu-Induced Modifications

    OpenAIRE

    Tangirala Venkata Krishna Karthik; María de la Luz Olvera; Arturo Maldonado; Heberto Gómez Pozos

    2016-01-01

    Pure and copper (Cu)-incorporated tin oxide (SnO2) pellet gas sensors with characteristics provoking gas sensitivity were fabricated and used for measuring carbon monoxide (CO) atmospheres. Non-spherical pure SnO2 nano-structures were prepared by using urea as the precipitation agent. The resultant SnO2 powders were ball milled and incorporated with a transition metal, Cu, via chemical synthesis method. The incorporation is confirmed by high-resolution transmission electron microscope (HRTEM)...

  12. Technical study on Ag-Cu based medium temperature solder prepared by mechanical alloying method%机械合金化法制备Ag-Cu基中温合金钎料工艺研究

    Institute of Scientific and Technical Information of China (English)

    郑苗; 刘薇; 王晓蓉; 陈融; 王天根; 沈杭燕

    2016-01-01

    为研究机械合金化法制备Ag-Cu中温合金钎料的工艺过程,系统分析了球磨工艺参数对合金焊粉粒度及形貌演变的影响,确定了机械合金化制备球磨焊粉的优化工艺参数.采用X射线衍射仪(XRD)、扫描电镜(SEM)和差示扫描量热分析仪(DSC)等分析手段,对合金化过程中物相变化、微观结构及熔化特性进行了表征,并在此基础上进行了Ag-Cu基三元和四元焊粉机械合金化的研究.结果表明:Ag-Cu系合金焊粉经优化工艺(球料比20:1,转速400 r/min,无水乙醇作为工艺控制剂,球磨40 h)球磨后,合金化完全,以过饱和固溶体为基体相;不同组元的添加对于焊粉尺寸形貌和相结构的影响不同.Ag-Cu-10Sn粉末在球磨40 h后生成了以亚稳态的过饱和固溶体Ag(Cu)为主要组成相的合金粉,其金相组织细小均匀,与不锈钢基板之间形成过渡层,有利于增加接头强度.这表明,通过控制球磨工艺和多组元的添加,可改变合金粉末的形貌和相结构,能得到过饱和固溶体为主要组成相的钎料合金,有利于改善钎料的性能.%To study the preparation process of the medium temperature solder powders using mechanical alloying method, the effects of ball-milling parameters on the size and morphology evolution of the powders were systematic studied and optimized. The phase compositions, microstructure and melting properties of the powders were characterized by X-ray diffraction ( XRD ) , scanning electron microscopy ( SEM ) and differential scanning calorimetry (DSC) methods. The mechanical alloying of ternary and quaternary solder powders based on Ag-Cu was also carried out. The results show that Ag-Cu system solder powders can be completely alloyed with the optimized ball-milling parameters:20:1 ball-to-powder weight ratio, 400 r/min milling speed, ethyl alcohol as PCA, milling for 40 h, and the supersaturated solid solutions can be obtained. The different elements additions such

  13. Electrochemical biosensors: Recommended definitions and classification (Technical Report)

    OpenAIRE

    Thevenot, Daniel,; Toth, Klara; Durst, Richard; Wilson, George

    1999-01-01

    International audience; Two Divisions of the International Union of Pure and Applied Chemistry (IUPAC), namely Physical Chemistry (Commission I.7 on Biophysical Chemistry, formerly Steering Committee on Biophysical Chemistry) and Analytical Chemistry (Commission V.5 on Electroanalytical Chemistry), have prepared recommendations on the definition, classification and nomenclature related to electrochemical biosensors; these recommendations could, in the future, be extended to other types of bio...

  14. Extemporaneous clobazam suspensions for paediatric use prepared from commercially available tablets and pure drug.

    Science.gov (United States)

    Buontempo, F; Moretton, M A; Quiroga, E; Chiappetta, D A

    2013-01-01

    Objetivo: Dos suspensiones orales acuosas de clobazam para uso pediátrico (5 mg/ml) fueron evaluadas para determinar su estabilidad fisicoquimica bajo diferentes condiciones de almacenamiento. Métodos: Las formulaciones fueron conservadas a 4 y 25 °C y el contenido de clobazam fue determinado mediante Cromatografía Líquida de Alta Performance. Cada una de las muestras fue analizada por triplicado a diferentes tiempos (0, 7, 14, 28 y 56 días). Resultados: Las suspensiones fueron formuladas satisfactoriamente a partir del principio activo puro y de comprimidos disponibles comercialmente. En ambos casos, las muestras presentaron una adecuada estabilidad física. El clobazam fue químicamente estable en las suspensiones acuosas durante los 56 días de duración del estudio a las dos temperaturas elegidas para su conservación. Conclusiones: Todas las formulaciones orales líquidas formuladas y evaluadas en este estudio pueden ser conservadas a 4 y 25 °C por al menos 56 días.

  15. Preparation of Pure Copper Powder from Acidic Copper Chloride Waste Etchant

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    The method for the recycling of copper from copper chloride solution was developed. This process consists of extraction of copper, purification and particle size reduction. In the first step, reductive metal scraps were added to acidic copper chloride waste enchants produced in the PCB industry to obtain copper powder.Composition analysis showed that this powder contained impurities such as Fe, Ni, and water. So, drying and purification were carried out by using microwave and a centrifugal separator. Thereby the copper powder had a purity of higher than 99% and spherical form in morphology. The copper powder size was decreased by ball milling.

  16. A Convenient Method for Preparation of Pure Standards of Peroxyacetyl Nitrate for Atmospheric Analyses

    DEFF Research Database (Denmark)

    Nielsen, Torben; Hansen, A. M.; Lund Thomsen, E.

    1982-01-01

    Peroxyacetyl nitrate (PAN) is synthesized by nitration of peracetic acid (1.2 M), extracted by n- heptane, and purified with normal-phase high-performance liquid chromatography. The purified PAN solution is free of acetyl nitrate. The content of PAN is determined by means of hydrolysis of PAN int...

  17. Shunting arc plasma source for pure carbon ion beam.

    Science.gov (United States)

    Koguchi, H; Sakakita, H; Kiyama, S; Shimada, T; Sato, Y; Hirano, Y

    2012-02-01

    A plasma source is developed using a coaxial shunting arc plasma gun to extract a pure carbon ion beam. The pure carbon ion beam is a new type of deposition system for diamond and other carbon materials. Our plasma device generates pure carbon plasma from solid-state carbon material without using a hydrocarbon gas such as methane gas, and the plasma does not contain any hydrogen. The ion saturation current of the discharge measured by a double probe is about 0.2 mA∕mm(2) at the peak of the pulse.

  18. Shunting arc plasma source for pure carbon ion beama)

    Science.gov (United States)

    Koguchi, H.; Sakakita, H.; Kiyama, S.; Shimada, T.; Sato, Y.; Hirano, Y.

    2012-02-01

    A plasma source is developed using a coaxial shunting arc plasma gun to extract a pure carbon ion beam. The pure carbon ion beam is a new type of deposition system for diamond and other carbon materials. Our plasma device generates pure carbon plasma from solid-state carbon material without using a hydrocarbon gas such as methane gas, and the plasma does not contain any hydrogen. The ion saturation current of the discharge measured by a double probe is about 0.2 mA/mm2 at the peak of the pulse.

  19. Synthesis and characterization of pure mesoporous zirconia thin film with two-dimensional hexagonal framework

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    Pure mesoporous ZrO2 thin film with two-dimensional hexagonal framework mesostructure has been successfully prepared by using a nonionic triblock copolymer as the structure-directing agent and ZrCl4 as the zirconia source through evaporation-induced self-assembly approach. The resulting materials were characterized by X-ray diffraction, scanning electron microscope, and nitrogen adsorption measurements. The obtained mesoporous ZrO2 thin film has a nanocrystalline inorganic framework (tetragonal zirconia) and narrowly distributed mesopore size (6. 7 nm in diameter).

  20. Decoherence and thermalization of a pure quantum state in quantum field theory.

    Science.gov (United States)

    Giraud, Alexandre; Serreau, Julien

    2010-06-11

    We study the real-time evolution of a self-interacting O(N) scalar field initially prepared in a pure, coherent quantum state. We present a complete solution of the nonequilibrium quantum dynamics from a 1/N expansion of the two-particle-irreducible effective action at next-to-leading order, which includes scattering and memory effects. We demonstrate that, restricting one's attention (or ability to measure) to a subset of the infinite hierarchy of correlation functions, one observes an effective loss of purity or coherence and, on longer time scales, thermalization. We point out that the physics of decoherence is well described by classical statistical field theory.

  1. A Facile Synthesis of Enantiomerically Pure (R)-6-Arylbinols

    Institute of Scientific and Technical Information of China (English)

    王文伶; 龙玉华; 邹志富; 杨定乔

    2012-01-01

    This work reported a convenient method for the preparation of enantiomerically pure 6-aryl-2,2'-dihydroxy-1, l'- binaphthyl derivatives starting from the commercially available (R)-2,2'-hydroxy-l, l'-binaphthyl [(R)-I] via bromi- nation, hydrolysis and Suzuki cross coupling reaction. This novel synthetie method was characterized with high re- gioselectivity, simple operation, mild reaction conditions, and excellent yield (up to 73%). On the other hand, we synthesized the target unknown compounds, which were confirmed by IR, 1H NMR, 13C NMR, MS and elementary analysis.

  2. Screening for antimicrobial activity of crude drug extracts and pure natural products from Mexican medicinal plants.

    Science.gov (United States)

    Rojas, A; Hernandez, L; Pereda-Miranda, R; Mata, R

    1992-01-01

    Preliminary antimicrobial screening against Candida albicans and selected Gram-positive and Gram-negative bacteria of methanol extracts prepared from eight Mexican medicinal plants, noted for their antiseptic properties, was conducted. The significant activity exhibited for extracts of Ratibida latipalearis, Teloxys graveolens, Dodonaea viscosa, Hyptis albida, H. pectinata, H. Suaveolens and H. verticillata tends to support their traditional use as anti-infective agents. Only the extract of Hintonia latiflora was inactive. The antimicrobial activities of 44 pure natural compounds and two derivatives were determined. Of these, only 23 compounds were effective in inhibiting the growth of the tested organisms (MIC less than or equal to 100 micrograms/ml).

  3. PREPARATION OF PuF$sub 3$

    Science.gov (United States)

    Benz, R.

    1964-03-01

    A process for preparing pure plutonium trifluoride is described in which a refractory plutonium compound is contacted with ammonium fluoride in a closed container at a pressure of at least 10 atmospheres and a temperature of about 550 deg C. (AEC)

  4. Pure mechanical wear loss measurement in corrosive wear

    Indian Academy of Sciences (India)

    Yanliang Huang; Xiaoxia Jiang; Sizuo Li

    2000-12-01

    The method for the measurement of the pure mechanical wear loss for 321 stainless steel, 1045 steel and pure iron in the study of the synergy between corrosion and wear was studied. The methods studied included the measurement in distilled water, by cathodic protection and by adding inhibitor KI, and all were compared with the wear loss in air. The experiment showed that the pure mechanical wear losses and friction coefficients obtained by the three methods were close to each other and can be used to calculate the various wear components in the study of the interaction of corrosion and wear, but the measurements in distilled water for pure iron and 1045 steel are not recommended due to their corrosion.

  5. Gravitation, Electromagnetism and the Cosmological Constant in Purely Affine Gravity

    Science.gov (United States)

    Popławski, Nikodem J.

    The Eddington Lagrangian in the purely affine formulation of general relativity generates the Einstein equations with the cosmological constant. The Ferraris-Kijowski purely affine Lagrangian for the electromagnetic field, which has the form of the Maxwell Lagrangian with the metric tensor replaced by the symmetrized Ricci tensor, is dynamically equivalent to the Einstein-Maxwell Lagrangian in the metric formulation. We show that the sum of the two affine Lagrangians is dynamically inequivalent to the sum of the analogous Lagrangians in the metric-affine/metric formulation. We also show that such a construction is valid only for weak electromagnetic fields. Therefore the purely affine formulation that combines gravitation, electromagnetism and the cosmological constant cannot be a simple sum of terms corresponding to separate fields. Consequently, this formulation of electromagnetism seems to be unphysical, unlike the purely metric and metric-affine pictures, unless the electromagnetic field couples to the cosmological constant.

  6. The effect of pure state structure on nonequilibrium dynamics

    Energy Technology Data Exchange (ETDEWEB)

    Newman, C M; Stein, D L [Courant Institute of Mathematical Sciences, New York University, New York, NY 10012 (United States)], E-mail: newman@cims.nyu.edu, E-mail: daniel.stein@nyu.edu

    2008-06-18

    Motivated by short-range Ising spin glasses, we review some rigorous results and their consequences for the relation between the number/nature of equilibrium pure states and nonequilibrium dynamics. Two of the consequences for spin glass dynamics following an instantaneous deep quench to a temperature with broken spin flip symmetry are: (1) almost all initial configurations lie on the boundary between the basins of attraction of multiple pure states; (2) unless there are uncountably many pure states with almost all pairs having zero overlap, there can be no equilibration to a pure state as time t {yields} {infinity}. We discuss the relevance of these results to the difficulty of equilibration of spin glasses. We also review some results concerning the 'nature versus nurture' problem of whether the large-t behavior of both ferromagnets and spin glasses following a deep quench is determined more by the initial configuration (nature) or by the dynamics realization (nurture)

  7. Pure compared with mixed serous endometrial carcinoma: two different entities?

    NARCIS (Netherlands)

    Roelofsen, T.; Ham, M.A. van; Wiersma van Tilburg, J.M.; Zomer, S.F.; Bol, M.; Massuger, L.F.A.G.; Bulten, J.

    2012-01-01

    OBJECTIVE: : To analyze whether mixed compared with pure uterine papillary serous carcinoma histology affects clinical outcome, and to assess uterine papillary serous carcinoma for its association with the precursor lesion endometrial intraepithelial carcinoma. METHODS: : A multi-institution observa

  8. Phase Semantics for a Pure Noncommutative Linear Propositional Logic

    Institute of Scientific and Technical Information of China (English)

    YING Mingsheng

    1999-01-01

    We use a many-sorted language to remove commutativity from phasesemantics of linear logic and show that pure noncommutativeintuitionistic linear propositional logic plus two classical rulesenjoys the soundness and completeness with respect to completelynoncommutative phase semantics.

  9. Partial Hermitian Conjugate Separability Criteria for Pure Quantum States

    Institute of Scientific and Technical Information of China (English)

    ZHAO Xin; WU Hua; LI Yan-Song; LONG Gui-Lu

    2009-01-01

    We propose a criterion for the separability of quantum pure states using the concept of a partial Hermitian conjugate.It is equivalent to the usual positive partial transposition criteria,with a simple physical interpretation.

  10. Production of tomato puree: an alternative to conservation of locally ...

    African Journals Online (AJOL)

    Mo

    (TSS) at which tomato puree could be preserved for at least one year. Material and methods. The vegetative material used .... The microbiological analysis was made at each stage. ... and this denotes the adaptability of packaging material and.

  11. Preparation of semisynthetic (+)-tubocurarine chloride.

    Science.gov (United States)

    Naghaway, J; Soine, T O

    1979-05-01

    Semisynthetic (+)-tubocurarine chloride (II) was prepared by monoquaternization of (+)-tubocurine. The method involved treating (+)-tubocurine with a 0.5 M equivalent of hydrochloric acid prior to quaternization with methyl iodide, followed by neutralization and iodide-chloride ion-exchange. Column chromatography and crystallization procedures were utilized for pure semisynthetic II preparation. The neuromuscular junction blocking activities of the semisynthetic and commercial II were determined by the in vivo cat hypoglossal nerve-tongue muscle preparation. No delectable differences among physical constants, spectral data, and neuromuscular junction blocking activities were noted between the commercial product and the semisynthetic II. This result substantiates the chemical and biological data for the well-accepted new formula for II. The unexplained M + n14 mass spectral peaks shown by the curare-type bases are characteristic of the molecular species rather than a result of contaminants.

  12. Technical preparation of a 300 kWel biomass gasification plant. Report for the project: Simplification, system and operation optimization of staged gasification unit for CHP production (the Castor unit in Graested); Teknisk forberedelse af 300 kWel bioforgasningsanlaeg. En Delrapport til projektet: Forenkling, system- og driftsoptimering af trinopdelt forgasningsanlaeg til kraftvarmeproduktion (Castor anlaegget i Graested)

    Energy Technology Data Exchange (ETDEWEB)

    Houmann Jakobsen, H.

    2009-09-15

    In 2003/04 BioSynergi Proces ApS built a complete approx. 450 kWth Open Core staged gasification unit as a development / demonstration plant. The plant uses wet wood chips as fuel for generating electricity and heat. The facility, known as the Castor plant, is connected to the heat supply network in Graested District Heating. The daily operation is handled by BioSynergi Process. The cogeneration system, that the Castor plant represents, is the basis for this completed project. For technical preparation of the planned future up scaling of the cogeneration system, a test of the function of the gas generator core (reactor core) was performed in this sub-project. It is the central component of the total cogeneration system, and it is also the one who has the greatest influence on the overall gasification process. The experiments have demonstrated that the stage gasification principle, which is in operation at the Castor plant, is also possible to have in operation with the desired process steps in the tested reactor core with four times more capacity. Finalization of the total gas generator in the range of 300 kWel is now being developed in a new project. The simplified experiments, that were possible to perform with the outdoor setup of the reactor core, were, however, not suited to qualitative assessments of the gasification process. (ln)

  13. Technical Assistance to Developers

    Energy Technology Data Exchange (ETDEWEB)

    Rockward, Tommy [Los Alamos National Laboratory; Borup, Rodney L. [Los Alamos National Laboratory; Garzon, Fernando H. [Los Alamos National Laboratory; Mukundan, Rangachary [Los Alamos National Laboratory; Spernjak, Dusan [Los Alamos National Laboratory

    2012-07-17

    This task supports the allowance of technical assistance to fuel-cell component and system developers as directed by the DOE. This task includes testing of novel materials and participation in the further development and validation of single cell test protocols. This task also covers technical assistance to DOE Working Groups, the U.S. Council for Automotive Research (USCAR) and the USCAR/DOE Driving Research and Innovation for Vehicle efficiency and Energy sustainability (U.S. Drive) Fuel Cell Technology Team. Assistance includes technical validation of new fuel cell materials and methods, single cell fuel cell testing to support the development of targets and test protocols, and regular advisory participation in other working groups and reviews. This assistance is made available to PEM fuel cell developers by request and DOE Approval. The objectives are to: (1) Support technically, as directed by DOE, fuel cell component and system developers; (2) Assess fuel cell materials and components and give feedback to developers; (3) Assist the DOE Durability Working Group with the development of various new material durability Testing protocols; and (4) Provide support to the U.S. Council for Automotive Research (USCAR) and the USCAR/DOE Fuel Cell Technology Team. FY2012 specific technical objectives are: (1) Evaluate novel MPL materials; (2) Develop of startup/ shutdown protocol; (3) Test the impact of hydrophobic treatment on graphite bi-polar plates; (4) Perform complete diagnostics on metal bi-polar plates for corrosion; and (5) Participate and lead efforts in the DOE Working Groups.

  14. General and Optimal Scheme for Local Conversion of Pure States

    Institute of Scientific and Technical Information of China (English)

    JIN Rui-Bo; CHEN Li-Bing; WANG Fa-Qiang; LU Yi-Qun

    2008-01-01

    We present general and optimal schemes for local conversion of pure states, via one specific example. First, we give the general solution of the doubly stochastic matrix. Then, we find the general and optimal positive-operator-valued measure (POVM) to realize the local conversion of pure states. Lastly, the physical realization of the POVM is discussed. We show that our scheme has a more general and better effect than other schemes.

  15. Acquired pure megakaryocytic aplasia successfully treated with cyclosporine

    Directory of Open Access Journals (Sweden)

    Halima El Omri

    2010-12-01

    Full Text Available Acquired pure megakaryocytic aplasia is a rare hematological disorder characterized by thrombocytopenia with absent or markedly reduced megakaryocytes in the bone marrow. We report a case of a 25-year-old male diagnosed as acquired pure megakaryocytic aplasia. Treatment with prednisone and intravenous immunoglobulin failed, but he was successfully treated with cyclosporine, with complete remission after 90 days and normal platelet count maintained thereafter.

  16. Physics of pure and non-pure positron emitters for PET: a review and a discussion.

    Science.gov (United States)

    Conti, Maurizio; Eriksson, Lars

    2016-12-01

    With the increased interest in new PET tracers, gene-targeted therapy, immunoPET, and theranostics, other radioisotopes will be increasingly used in clinical PET scanners, in addition to (18)F. Some of the most interesting radioisotopes with prospective use in the new fields are not pure short-range β(+) emitters but can be associated with gamma emissions in coincidence with the annihilation radiation (prompt gamma), gamma-gamma cascades, intense Bremsstrahlung radiation, high-energy positrons that may escape out of the patient skin, and high-energy gamma rays that result in some e (+)/e (-) pair production. The high level of sophistication in data correction and excellent quantitative accuracy that has been reached for (18)F in recent years can be questioned by these effects. In this work, we review the physics and the scientific literature and evaluate the effect of these additional phenomena on the PET data for each of a series of radioisotopes: (11)C, (13)N, (15)O, (18)F, (64)Cu, (68)Ga, (76)Br, (82)Rb, (86)Y, (89)Zr, (90)Y, and (124)I. In particular, we discuss the present complications arising from the prompt gammas, and we review the scientific literature on prompt gamma correction. For some of the radioisotopes considered in this work, prompt gamma correction is definitely needed to assure acceptable image quality, and several approaches have been proposed in recent years. Bremsstrahlung photons and (176)Lu background were also evaluated.

  17. A preparation Penning trap for the TRAPSENSOR project with prospects for MATS at FAIR

    Science.gov (United States)

    Cornejo, J. M.; Rodríguez, D.

    2016-06-01

    Most of the Penning trap spectrometers for precision measurements at radioactive ion beam facilities make use of another Penning trap, located upstream in the experimental set up, to perform isobaric separation and deliver cooled and pure ion samples to be measured. The preparation trap for the project TRAPSENSOR at the University of Granada has been built to prepare ions, produced off-line with a laser-desorption ion source, using firstly the buffer-gas cooling technique. The system has been built following the geometrical specifications given in the Technical Design Report for the MATS Penning-trap system to be built at the future Facility for Antiprotons and Ion Research (FAIR) in Darmstadt. So far, cooling resonances have been obtained for stable nuclides, with mass-to-charge ratios ranging from 40 to about 200, with a performance similar to those systems already in operation at radioactive ion beam facilities. In this contribution, the preparation trap, built and commissioned at the University of Granada, will be briefly described. First results on buffer-gas cooling will be presented.

  18. Fracture behaviors under pure shear loading in bulk metallic glasses

    Science.gov (United States)

    Chen, Cen; Gao, Meng; Wang, Chao; Wang, Wei-Hua; Wang, Tzu-Chiang

    2016-12-01

    Pure shear fracture test, as a special mechanical means, had been carried out extensively to obtain the critical information for traditional metallic crystalline materials and rocks, such as the intrinsic deformation behavior and fracture mechanism. However, for bulk metallic glasses (BMGs), the pure shear fracture behaviors have not been investigated systematically due to the lack of a suitable test method. Here, we specially introduce a unique antisymmetrical four-point bend shear test method to realize a uniform pure shear stress field and study the pure shear fracture behaviors of two kinds of BMGs, Zr-based and La-based BMGs. All kinds of fracture behaviors, the pure shear fracture strength, fracture angle and fracture surface morphology, are systematically analyzed and compared with those of the conventional compressive and tensile fracture. Our results indicate that both the Zr-based and La-based BMGs follow the same fracture mechanism under pure shear loading, which is significantly different from the situation of some previous research results. Our results might offer new enlightenment on the intrinsic deformation and fracture mechanism of BMGs and other amorphous materials.

  19. Fuel Element Technical Manual

    Energy Technology Data Exchange (ETDEWEB)

    Burley, H.H. [ed.

    1956-08-01

    It is the purpose of the Fuel Element Technical Manual to Provide a single document describing the fabrication processes used in the manufacture of the fuel element as well as the technical bases for these processes. The manual will be instrumental in the indoctrination of personnel new to the field and will provide a single data reference for all personnel involved in the design or manufacture of the fuel element. The material contained in this manual was assembled by members of the Engineering Department and the Manufacturing Department at the Hanford Atomic Products Operation between the dates October, 1955 and June, 1956. Arrangement of the manual. The manual is divided into six parts: Part I--introduction; Part II--technical bases; Part III--process; Part IV--plant and equipment; Part V--process control and improvement; and VI--safety.

  20. Technical training - places available

    CERN Multimedia

    2012-01-01

    If you would like more information on a course, or for any other inquiry/suggestions, please contact Technical.Training@cern.ch Valeria Perez Reale, Learning Specialist, Technical Programme Coordinator (Tel.: 62424) Eva Stern and Elise Romero, Technical Training Administration (Tel.: 74924) HR Department »Electronics design Next Session Duration Language Availability Comprehensive VHDL for FPGA Design 08-Oct-12 to 12-Oct-12 5 days English 3 places available Foundations of Electromagnetism and Magnet Design (EMAG) 14-Nov-12 to 27-Nov-12 6 days English 20 places available Impacts de la suppression du plomb (RoHS) en électronique 26-Oct-12 to 26-Oct-12 8 hours French 15 places available Introduction to VHDL 10-Oct-12 to 11-Oct-12 2 days English 7 places available LabVIEW Real Time and FPGA 13-Nov-12 to 16-Nov-12 5 days French 5 places available »Mechanical design Next Se...

  1. Technical training: places available

    CERN Multimedia

    2013-01-01

    If you would like more information on a course, or for any other inquiry/suggestions, please contact Technical.Training@cern.ch Valeria Perez Reale, Learning Specialist, Technical Programme Coordinator (Tel.: 62424) Eva Stern and Elise Romero, Technical Training Administration (Tel.: 74924)   Electronics design Next Session Duration Language Introduction to VHDL 21-Feb-13 to 22-Feb-13 2 days English Mechanical design Next Session Duration Language ANSYS - Introduction à ANSYS Mechanical APDL 04-Feb-13 to 07-Feb-13 4 days English Applications de la cotation fonctionnelle et du langage ISO 06-Feb-13 to 08-Feb-13 2 days 4 hours French CATIA V5 – Surfacique 14-Jan-13 to 15-Jan-13 2 days French Office software Next Session Duration Language ACCESS 2010 - niveau 2 : ECDL 06-Feb-13 to 07-Feb-13 2 days French Dreamweaver CS3 - Niveau 1 14-Jan-13 to 15-Jan-13 2 d...

  2. Windows 10 Technical Preview

    OpenAIRE

    Jyväsjärvi, Teppo

    2015-01-01

    Tässä opinnäytetyössä tutustaan uuden kesällä 2015 virallisesti julkaistavan Windows 10 -käyttöjärjestelmän Technical Preview -kehitysversioon. Ensimmäinen Technical Preview -versio julkaistiin syksyllä 2014. Opinnäytetyössä tutustaan Windows 10:n uusin ominaisuuksiin ja tehdään vertailua aiemman Windows 8.1 -version kanssa. Työssä Windows 10 Technical Preview asennetaan virtuaalikoneelle, käydään läpi asennuksen eri vaiheet sekä suurimmat muutokset käyttöliittymässä ja sovelluksissa. Op...

  3. Technical training - Places available

    CERN Multimedia

    2012-01-01

    If you would like more information on a course, or for any other inquiry/suggestions, please contact Technical.Training@cern.ch Valeria Perez Reale, Learning Specialist, Technical Programme Coordinator (Tel.: 62424) Eva Stern and Elise Romero, Technical Training Administration (Tel.: 74924)   Electronics design Next Session Duration Language Availability Certified LabVIEW Associate Developer (CLAD) 06-Dec-12 to 06-Dec-12 1 hour English One more place available Compatibilité électromagnetique (CEM): Applications 23-Nov-12 to 23-Nov-12 3.5 hours English 3 places available Compatibilité électromagnétique (CEM): Introduction 23-Nov-12 to 23-Nov-12 3 hours English 43 places available Effets des Radiations sur les composants et systèmes électroniques 11-Dec-12 to 12-Dec-12 1 day 4 hours French 9 places available LabVIEW for beginners ...

  4. One-step solution combustion synthesis of pure Ni nanopowders with enhanced coercivity: The fuel effect

    Science.gov (United States)

    Khort, Alexander; Podbolotov, Kirill; Serrano-García, Raquel; Gun'ko, Yurii K.

    2017-09-01

    In this paper, we report a new modified one-step combustion synthesis technique for production of Ni metal nanoparticles. The main unique feature of our approach is the use of microwave assisted foam preparation. Also, the effect of different types of fuels (urea, citric acid, glycine and hexamethylenetetramine) on the combustion process and characteristics of resultant solid products were investigated. It is observed that the combination of microwave assisted foam preparation and using of hexamethylenetetramine as a fuel allows producing pure ferromagnetic Ni metal nanoparticles with enhanced coercivity (78 Oe) and high value of saturation magnetization (52 emu/g) by one-step solution combustion synthesis under normal air atmosphere without any post-reduction processing.

  5. Quantitative self-assembly of a purely organic three-dimensional catenane in water

    Science.gov (United States)

    Li, Hao; Zhang, Huacheng; Lammer, Aaron D.; Wang, Ming; Li, Xiaopeng; Lynch, Vincent M.; Sessler, Jonathan L.

    2015-12-01

    Self-assembly by means of coordinative bond formation has opened up opportunities for the high-yield synthesis of molecules with complex topologies. However, the preparation of purely covalent molecular architectures in aqueous media has remained a challenging task. Here, we present the preparation of a three-dimensional catenane through a self-assembly process that relies on the formation of dynamic hydrazone linkages in an acidic aqueous medium. The quantitative synthesis process and the mechanically interlocked structure of the resulting catenane were established by NMR spectroscopy, mass spectrometry, X-ray crystallography and HPLC studies. In addition, the labile hydrazone linkages of the individual [2]catenane components may be ‘locked’ by increasing the pH of the solution, yielding a relatively kinetically stable molecule. The present study thus details a simple approach to the creation and control of complex molecular architectures under reaction conditions that mimic biological milieux.

  6. Evidence for Argon Content in Pure Oxygen from Thermal Data

    Science.gov (United States)

    Steur, Peter P. M.; Yang, Inseok; Pavese, Franco

    2017-02-01

    Since many years it is known that argon impurities in oxygen change the temperature of the oxygen triple point by +12 K{\\cdot }mol^{-1} (positive, while most impurities decrease the temperature) without any effect on the melting range of this transition, for the impurity concentrations usually encountered in nominally pure gases. It has been hypothesized that thermal measurements on the α -β solid-to-solid transition at 23.8 K or the β -γ solid-to-solid transition at 43.8 K may give reliable evidence regarding the argon content. However, such measurements require very long times for full completion of each transition (with prohibitive costs if liquid helium is used) and for the α -β solid-to-solid transition the heat pulse method cannot be applied reliably. The availability of closed-cycle refrigerators permits the first obstacle to be surmounted. The automatic system earlier developed at INRIM during the EU Multicells project and used extensively for the project on the isotopic effect in neon is perfectly suited for such measurements. Thus, the uncertainties of the temperature measurements are similar to those obtained previously (of the order of 0.1 mK or less). Three argon-in-oxygen mixtures were prepared gravimetrically and certified at KRISS, just as was previously done for the work on the neon isotopic compositions. Results of continuous-current measurements on the α -β solid-to-solid transition, along with the triple-point data obtained with the heat pulse method, are presented for one cell with a known doped argon content, to be compared with similar data from a cell with oxygen of very high purity. In addition, some preliminary data for the β -γ solid-to-solid transition are given. The measurements on the mixture with the highest argon content, about 1002 μmol{\\cdot } mol^{-1}, imply a (linear) sensitivity of (116 ± 7) K{\\cdot }mol^{-1} for the α -β transition. This sensitivity may be different at much lower argon contents, and follow

  7. Transformation of technical infrastructure

    DEFF Research Database (Denmark)

    Nielsen, Susanne Balslev

    The scope of the project is to investigate the possibillities of - and the barriers for a transformation of technical infrastructure conserning energy, water and waste. It focus on urban ecology as a transformation strategy. The theoretical background of the project is theories about infrastructure......, the evolution of large technological systems and theories about organisational and technological transformationprocesses. The empirical work consist of three analysis at three different levels: socio-technical descriptions of each sector, an envestigation of one municipality and envestigations of one workshop...

  8. CERN Technical Training : Vista !

    CERN Multimedia

    HR Department

    2008-01-01

    You are running Vista on your new PC – or are planning to install it? The Technical Training service is organizing a half-day training course on the new features of the VISTA operating system. This course introduces the new interfaces and presents the new functionalities for people who are experienced in the use of Windows XP. The next bilingual sessions of this course will take place on 12 December 2008 and 30 January 2009. Register using our catalogue: http://cta.cern.ch/cta2/f?p=110:9 or contact us with your questions/comments at mailto:Technical.Training@cern.ch

  9. CERN Technical Training : Vista !

    CERN Multimedia

    HR Department

    2008-01-01

    Are you running Vista on your new PC – or are you planning to install it? The Technical Training service is organizing a half-day training course on the new features of the VISTA operating system. This course introduces the new interfaces and presents the new functionalities for people who are experienced in the use of Windows XP. The next bilingual sessions of this course will take place on 12 December 2008 and 30 January 2009. Register using our catalogue: http://cta.cern.ch/cta2/f?p=110:9 or contact us with your questions/comments at mailto:Technical.Training@cern.ch

  10. CERN Technical Training : Vista !

    CERN Multimedia

    HR Department

    2008-01-01

    Are you running Vista on your new PC – or are planning to install it? The Technical Training service is organizing a half-day training course on the new features of the VISTA operating system. This course introduces the new interfaces and presents the new functionalities for people who are experienced in the use of Windows XP. The next bilingual sessions of this course will take place on 12 December 2008 and 30 January 2009. Register using our catalogue: http://cta.cern.ch/cta2/f?p=110:9 or contact us with your questions/comments at Technical.Training@cern.ch

  11. CERN Technical Training : Vista !

    CERN Multimedia

    HR Department

    2009-01-01

    Are you running Vista on your new PC – or are you planning to install it? The Technical Training service is organizing a half-day training course on the new features of the VISTA operating system. This course introduces the new interfaces and presents the new functionalities for people who are experienced in the use of Windows XP. The next bilingual session of this course will take place on 30 January 2009. Register using our catalogue: http://cta.cern.ch/cta2/f?p=110:9 or contact us with your questions/comments at mailto:Technical.Training@cern.ch

  12. CERN Technical Training : Vista !

    CERN Multimedia

    HR Department

    2008-01-01

    You are running Vista on your new PC – or are planning to install it? The Technical Training service is organizing a half-day training on the new features of the VISTA operating system. This course introduces the new interfaces and presents the new functionalities for people who are experienced using Windows XP. The next bilingual sessions of this course will take place on December 12, 2008 and January 30, 2009. Register using our catalogue : http://cta.cern.ch/cta2/f?p=110:9 or contact us with your questions/comments at Technical.Training@cern.ch

  13. Core Capabilities and Technical Enhancement -- FY-98 Annual Report

    Energy Technology Data Exchange (ETDEWEB)

    Miller, David Lynn

    1999-04-01

    The Core Capability and Technical Enhancement (CC&TE) Program, a part of the Verification, Validation, and Engineering Assessment Program, was implemented to enhance and augment the technical capabilities of the Idaho National Engineering and Environmental Laboratory (INEEL). The purpose for strengthening the technical capabilities of the INEEL is to provide the technical base to serve effectively as the Environmental Management Laboratory for the Office of Environmental Management (EM). An analysis of EM's science and technology needs as well as the technology investments currently being made by EM across the complex was used to formulate a portfolio of research activities designed to address EM's needs without overlapping work being done elsewhere. An additional purpose is to enhance and maintain the technical capabilities and research infrastructure at the INEEL. This is a progress report for fiscal year 1998 for the five CC&TE research investment areas: (a) transport aspects of selective mass transport agents, (b) chemistry of environmental surfaces, (c) materials dynamics, (d) characterization science, and (e) computational simulation of mechanical and chemical systems. In addition to the five purely technical research areas, this report deals with the science and technology foundations element of the CC&TE from the standpoint of program management and complex-wide issues. This report also provides details of ongoing and future work in all six areas.

  14. Core capabilities and technical enhancement, FY-98 annual report

    Energy Technology Data Exchange (ETDEWEB)

    Miller, D.L.

    1999-04-01

    The Core Capability and Technical Enhancement (CCTE) Program, a part of the Verification, Validation, and Engineering Assessment Program, was implemented to enhance and augment the technical capabilities of the Idaho National Engineering and Environmental Laboratory (INEEL). The purpose for strengthening the technical capabilities of the INEEL is to provide the technical base to serve effectively as the Environmental Management Laboratory for the Department of Energy's Office of Environmental Management (EM). An analysis of EM's science and technology needs as well as the technology investments currently being made by EM across the complex was used to formulate a portfolio of research activities designed to address EM's needs without overlapping work being done elsewhere. An additional purpose is to enhance and maintain the technical capabilities and research infrastructure at the INEEL. This is a progress report for fiscal year 1998 for the five CCTE research investment areas: (a) transport aspects of selective mass transport agents, (b) chemistry of environmental surfaces, (c) materials dynamics, (d) characterization science, and (e) computational simulation of mechanical and chemical systems. In addition to the five purely technical research areas, this report deals with the science and technology foundations element of the CCTE from the standpoint of program management and complex-wide issues. This report also provides details of ongoing and future work in all six areas.

  15. Pure and Pseudo-pure Fluid Thermophysical Property Evaluation and the Open-Source Thermophysical Property Library CoolProp

    DEFF Research Database (Denmark)

    Bell, Ian H.; Wronski, Jorrit; Quoilin, Sylvain

    2014-01-01

    Over the last few decades, researchers have developed a number of empirical and theoretical models for the correlation and prediction of the thermophysical properties of pure fluids and mixtures treated as pseudo-pure fluids. In this paper, a survey of all the state-of-the-art formulations of the...... are included in the library, as well as properties of 40 incompressible fluids and humid air. The source code for the CoolProp library is included as an electronic annex....

  16. Content of bioactive compounds and antioxidant capacity of pumpkin puree enriched with japanese quince, cornelian cherry, strawberry and apples

    Directory of Open Access Journals (Sweden)

    Agnieszka Nawirska-Olszańska

    2011-03-01

    Full Text Available   Background. When evaluated in terms of taste, smell or active ingredients, pumpkin in itself is not very attractive as a raw material. Hence, it is recommended to blend pumpkin with other fruits, which are aromatic, have a defined taste, and contain a large quantity of active ingredients and organic acids to improve its palatibility. Material and methods. The pumpkin chosen for the experiments was of the variety Karowita, of species Cucurbita maxima. Ten different of compositions were prepared for the purpose of the study: 10, 20 and 30% (w/w of Japanese quince and cornelian cherry each, or 20 and 30% (w/w of strawberry and apple each. The puree was then analysed for dry matter, extract, viscosity, colour, vitamin C, total polyphenols, carotenoids and DPPH. Results. The highest content of vitamin C, which was in direct proportion to the quantity of the supplement added (17.88 to 23.43 mg·100 g-1, was detected in the quince-enriched puree. The lowest vitamin C content was determined in apple-enriched samples (1.36 to 1.6 mg·100 g-1. A similar pattern was observed with total polyphenols: the highest values were measured in quince-enriched puree, and the lowest in the puree supplemented with apple. Conclusion. Taking into account antioxidant properties of the samples, quince-enriched pumpkin puree was found to be the most attractive, and apple-enriched pumpkin puree the least attractive one. The results suggest a wide range of application for pumpkin puree enriched with various additives.  

  17. Ultrasmall and phase-pure W2C nanoparticles for efficient electrocatalytic and photoelectrochemical hydrogen evolution

    Science.gov (United States)

    Gong, Qiufang; Wang, Yu; Hu, Qi; Zhou, Jigang; Feng, Renfei; Duchesne, Paul N.; Zhang, Peng; Chen, Fengjiao; Han, Na; Li, Yafei; Jin, Chuanhong; Li, Yanguang; Lee, Shuit-Tong

    2016-01-01

    Earlier research has been primarily focused on WC as one of the most promising earth-abundant electrocatalysts for hydrogen evolution reaction (HER), whereas the other compound in this carbide family—W2C—has received far less attention. Our theoretical calculations suggest that such a focus is misplaced and W2C is potentially more HER-active than WC. Nevertheless, the preparation of phase pure and sintering-free W2C nanostructures represents a formidable challenge. Here we develop an improved carburization method and successfully prepare ultrasmall and phase-pure W2C nanoparticles. When evaluated for HER electrocatalysis, W2C nanoparticles exhibit a small onset overpotential of 50 mV, a Tafel slope of 45 mV dec−1 and outstanding long-term cycling stability, which are dramatically improved over all existing WC-based materials. In addition, the integration of W2C nanoparticles with p-type Si nanowires enables highly active and sustainable solar-driven hydrogen production. Our results highlight the great potential of this traditionally non-popular material in HER electrocatalysis. PMID:27752046

  18. PISA 2012 Technical Report

    Science.gov (United States)

    OECD Publishing, 2014

    2014-01-01

    The "PISA 2012 Technical Report" describes the methodology underlying the PISA 2012 survey, which tested 15-year-olds' competencies in mathematics, reading and science and, in some countries, problem solving and financial literacy. It examines the design and implementation of the project at a level of detail that allows researchers to…

  19. Routledge French technical dictionary

    CERN Document Server

    1994-01-01

    The French-English volume of this highly acclaimed set consists of some 100,000 keywords in both French and English, drawn from the whole range of modern applied science and technical terminology. Covers over 70 subject areas, from engineering and chemistry to packaging, transportation, data processing and much more.

  20. Technical Due Diligence

    DEFF Research Database (Denmark)

    Jensen, Per Anker; Varano, Mattia

    2011-01-01

    Technical Due Diligence (TDD) as an evaluation of the performance of constructed facilities has become an important new field of practice for consultants. Before the financial crisis started in autumn 2008 it represented the fastest growing activity in some consulting companies. TDD is mostly car...

  1. CATV Technical Papers.

    Science.gov (United States)

    National Cable Television Association, Inc., Washington, DC.

    Complete technical papers of the 1977 National Cable Television Association Convention are included in this report. Twenty-two of 32 papers and two abstracts cover the topics of advanced cable television techniques, human reactions to television picture impairment, special displays and services, protection from theft of service, everyday…

  2. Technical Training: Places available

    CERN Multimedia

    Monique Duval

    2005-01-01

    The number of places available may vary. Please check our Web site to find out the current availability. Places are available on the following courses: LabVIEW Migration 6 to 7: 14.6.2005 (1 day) IT3T/1 - Read your mail and more with Outlook 2003 : 14.6.2005 (IT Technical Training Tutorial, free of charge) IT3T/2 - Creating, managing and using distribution lists with Simba2 : 16.6.2005 (IT Technical Training Tutorial, free of charge) FrontPage 2003 - niveau 2 : 16 & 17.6.2005 (2 jours) size="2">(1journée) Hands-on Introduction to Python Programming: 28 - 30.6.2005 (3 days) Introduction to ANSYS: 21 - 24.6.2005 (4 days) IT3T/3 - Working remotely with Windows XP: 28.6.2005 (IT Technical Training Tutorial, free of charge) IT3T/4 - Editing Websites with Frontpage 2003: 30.6.2005 (IT Technical Training Tutorial, free of charge) LabVIEW base 1 : 4 - 6.7.2005 (3 jours) LabVIEW Basics 2: AutoCorrect, Find/Replace) : 4.7.2005 (afternoon) WORD 2003 (Shor...

  3. Technical Training: Places available

    CERN Multimedia

    Monique Duval

    2005-01-01

    The number of places available may vary. Please check our Web site to find out the current availability. Places are available on the following courses: LabVIEW Real-Time (F) : 7 - 9.6.2005 (3 jours) LabVIEW Migration 6 to 7: 14.6.2005 (1 day) IT3T/1 - Read your mail and more with Outlook 2003 : 14.6.2005 (IT Technical Training Tutorial, free of charge) IT3T/2 - Creating, managing and using distribution lists with Simba2 : 16.6.2005 (IT Technical Training Tutorial, free of charge) FrontPage 2003 - niveau 2 : 16 & 17.6.2005 (2 jours) Utilisation de fichiers PDF avec ACROBAT 6.0 : 20.6.2005 (1journée) Introduction to ANSYS: 21 - 24.6.2005 (4 days) IT3T/3 - Working remotely with Windows XP : 28.6.2005 (IT Technical Training Tutorial, free of charge) IT3T/4 - Editing Websites with Frontpage 2003 : 30.6.2005 (IT Technical Training Tutorial, free of charge) WORD 2003 (Short Course I) - HowTo... Work with repetitive tasks /AutoText, AutoFormat, AutoC...

  4. Improved technical specifications

    Energy Technology Data Exchange (ETDEWEB)

    Hoffman, D.R.

    1994-12-31

    Improved technical specifications for nuclear power plants are outlined. The objectives of this work are to improve safety, provide a clearer understanding of safety significance, and ease NRC and industry administrative burdens. Line item improvements, bases, and implementation of the specifications are discussed.

  5. Materials Technical Team Roadmap

    Energy Technology Data Exchange (ETDEWEB)

    none,

    2013-08-01

    Roadmap identifying the efforts of the Materials Technical Team (MTT) to focus primarily on reducing the mass of structural systems such as the body and chassis in light-duty vehicles (including passenger cars and light trucks) which enables improved vehicle efficiency regardless of the vehicle size or propulsion system employed.

  6. Author-Editor Guide to Technical Publications Preparation. Revision

    Science.gov (United States)

    1990-01-01

    professional authors are easy enough on themselves to let early efforts go 3.9 Equations. If there are equations, insert them final. Ernest Hemingway ... Hemingway said, "Getting the words right." numbered consecutively (enclosed in parentheses, in the right-hand margin) throughout the text. For example...Modern English Usage, 2d ed., revised by Sir Ernest Gowers, Greenwich House, New York, 1983. Gowers, Ernest , The Complete Plain Words, Penguin B(oks

  7. EAST and its technical program in preparation to ITER

    Energy Technology Data Exchange (ETDEWEB)

    Li Jiangang [Chinese Academy of Sciences (China). Inst. of Plasma Physics

    2007-07-01

    EAST is the first Tokamak using superconducting magnet technology similar to that required in ITER. The successful construction and commissioning of EAST could provide many useful experiences for ITER. EAST got its first plasma on Sept. 26, 2006. Experiments have been carried out during last October and this January. Up to 500kA divertor plasma has been obtained. Up/Down single null, double null configurations have been obtained with elongation close to 2 and elongation over 0.6. Plasma duration was close to 10s. The success in achieving various shaped diverted plasma confirms capability of the superconducting poloidal magnets and plasma control algorithm with the EAST new features. Efforts have been made for machine safety, reliability and capacity during commissioning. All design parameters of machine reached their full values, such as toroidal field 3.5 T, 20 kA/s PF coil ramping rate, in the end of commissioning. Of particular interest have been focused on the operational experience with quench detection systems, reliable interlock and safety system, the plasma control capability of the superconducting PF coils and the use of HTc current leads. The new machine shows its unique features during experiments, which are well suited to answer a number of important issues for ITER operations and developments towards DEMO. Plasma initiation, ramp up and control with constraints of superconducting coils. Very low plasma ramp rate of 0.1MA/s during start up phase have been obtained with assistant of LHW on a boronized wall condition. Effects of AC losses and disruptions on the superconducting systems have been evaluated during plasma discharges. Two wall conditioning techniques, GDC and ICR, have been used and compared. ICR technique has been extensively used for wall cleaning, recycling control, and boronization with very wide operation pressure (1 x 10-4Pa-5Pa). Further developments of EAST hardware will make more contribution for ITER construction and operation, such as investigation of particle inventory with various divertor configurations, graphite walls and development of hydrogen removal techniques, development of high performance operation in steady state condition in near future. (orig.)

  8. Extraction of distance restraints from pure shift NOE experiments

    Science.gov (United States)

    Kaltschnee, Lukas; Knoll, Kevin; Schmidts, Volker; Adams, Ralph W.; Nilsson, Mathias; Morris, Gareth A.; Thiele, Christina M.

    2016-10-01

    NMR techniques incorporating pure shift methods to improve signal resolution have recently attracted much attention, owing to their potential use in studies of increasingly complex molecular systems. Extraction of frequencies from these simplified spectra enables easier structure determination, but only a few of the methods presented provide structural parameters derived from signal integral measurements. In particular, for quantification of the nuclear Overhauser effect (NOE) it is highly desirable to utilize pure shift techniques where signal overlap normally prevents accurate signal integration, to enable measurement of a larger number of interatomic distances. However, robust methods for the measurement of interatomic distances using the recently developed pure shift techniques have not been reported to date. In this work we discuss some of the factors determining the accuracy of measurements of signal integrals in interferogram-based Zangger-Sterk (ZS) pure shift NMR experiments. The ZS broadband homodecoupling technique is used in different experiments designed for quantitative NOE determination from pure shift spectra. It is shown that the techniques studied can be used for quantitative extraction of NOE-derived distance restraints, as exemplified for the test case of strychnine.

  9. Difluoromethane preparation

    NARCIS (Netherlands)

    Wiersma, A.; Sandt, E.J.A.; Van Bekkum, H.; Makkee, M.; Moulijn, J.A.

    1996-01-01

    Abstract of NL 9401574 (A) The invention relates to a method for preparing difluoromethane, wherein dichlorodifluoromethane or monochlorodifluoromethane is brought into contact with hydrogen in the presence of palladium on activated carbon, wherein the loading of the palladium on the activated c

  10. Risk based technique for improving technical specifications

    Energy Technology Data Exchange (ETDEWEB)

    Kim, I. S.; Jae, M. S.; Kim, B. S.; Hwang, S. W.; Kang, K. M.; Park, S. S.; Yu, Y. S. [Hanyang Univ., Seoul (Korea, Republic of)

    2001-03-15

    The objective of this study is to develop the systematic guidance for reviewing the documents associated with the changes of technical specifications. The work done in this fiscal year is the following : surveys in TS requirements, TS improvements and TS regulations in foreign countries as well as Korea, surveys on the state-of-the-art of RITSs and their use in Korea, development of a decision-making framework for both the licensee and the regulation agency, description of risk measures, assessment methodology on STI/AOT, and adverse effects caused by periodic maintenance, which are explained in appendix. The results of this study might contribute to enhancing the quality of the current technical specifications and contribute to preparing the risk informed regulation program using the decision-making framework developed in this study.

  11. Petrochemical processes. Technical and economical characteristics Vol. 2 (2 ed)

    Energy Technology Data Exchange (ETDEWEB)

    Chauvel, A.; Lefebvre, G.; Castex, L.

    1986-01-01

    In this book are examined the processes for the preparation of oxygenated, chlorine or nitrogen containing compounds in petroleum chemistry. Preparation of ethylene oxide, propylene oxide, ethylene glycol, propylene glycol, acetic derivatives, alcohols (ethanol, isopropanol, butanols and higher alcohols), phenol, ketones and monomers. For each compound are described the main industrial production methods, main technical and economical characteristics (investment, market, production, capacity and consumption in various countries).

  12. Fine Needle Aspiration Cytology in Diagnosis of Pure Neuritic Leprosy

    Directory of Open Access Journals (Sweden)

    Bipin Kumar

    2011-01-01

    Full Text Available Leprosy is a chronic infection affecting mainly the skin and peripheral nerve. Pure neuritic form of this disease manifests by involvement of the nerve in the absence of skin lesions. Therefore, it can sometimes create a diagnostic problem. It often requires a nerve biopsy for diagnosis, which is an invasive procedure and may lead to neural deficit. Fine needle aspiration cytology (FNAC of an affected nerve can be a valuable and less invasive procedure for the diagnosis of such cases. We report five suspected cases of pure neuritic Hansen's disease involving the common and superficial peroneal, ulnar, and median nerve, who underwent FNAC. Smears revealed nerve fibers infiltrated by chronic inflammatory cells in all cases, presence of epithelioid cells granulomas, and Langhans giant cells in three cases, and acid fast bacilli in two cases. In conclusion, FNAC is a safe, less invasive, and time saving procedure for the diagnosis of pure neuritic leprosy.

  13. Fast word reading in pure alexia: "fast, yet serial".

    Science.gov (United States)

    Bormann, Tobias; Wolfer, Sascha; Hachmann, Wibke; Neubauer, Claudia; Konieczny, Lars

    2015-01-01

    Pure alexia is a severe impairment of word reading in which individuals process letters serially with a pronounced length effect. Yet, there is considerable variation in the performance of alexic readers with generally very slow, but also occasionally fast responses, an observation addressed rarely in previous reports. It has been suggested that "fast" responses in pure alexia reflect residual parallel letter processing or that they may even be subserved by an independent reading system. Four experiments assessed fast and slow reading in a participant (DN) with pure alexia. Two behavioral experiments investigated frequency, neighborhood, and length effects in forced fast reading. Two further experiments measured eye movements when DN was forced to read quickly, or could respond faster because words were easier to process. Taken together, there was little support for the proposal that "qualitatively different" mechanisms or reading strategies underlie both types of responses in DN. Instead, fast responses are argued to be generated by the same serial-reading strategy.

  14. Effect of vanadium carbide on commercial pure aluminum

    Science.gov (United States)

    Sun, Hua-ping; Wu, Jun; Tang, Tian; Fan, Bo; Tang, Zheng-hua

    2017-07-01

    The effect of vanadium carbide (VC) on the grain size of commercial pure aluminum was experimentally investigated by varying the content of VC, the holding time, and casting temperature. The refining efficiencies of VC and Al5Ti1B were also compared. The refined samples of commercial pure aluminum were examined using optical microscopy, scanning electron microscopy (SEM) and energy-dispersive spectroscopy (EDS). The results suggest that VC is a good refiner of commercial pure aluminum. The addition of only 0.3wt% VC can decrease the grain size of aluminum to 102 μm, whereas the casting temperature and holding time have little effect on the grain size. The refining efficiency of VC is better than that of Al5Ti1B. The VC particles in molten aluminum act as nuclei and the grain refinement of aluminum alloys by VC particles is achieved via heterogeneous nucleation.

  15. The neuroanatomy of pure apraxia of speech in stroke.

    Science.gov (United States)

    Graff-Radford, Jonathan; Jones, David T; Strand, Edythe A; Rabinstein, Alejandro A; Duffy, Joseph R; Josephs, Keith A

    2014-02-01

    The left insula or Broca's area have been proposed as the neuroanatomical correlate for apraxia of speech (AOS) based on studies of patients with both AOS and aphasia due to stroke. Studies of neurodegenerative AOS suggest the premotor area and the supplementary motor areas as the anatomical correlates. The study objective was to determine the common infarction area in patients with pure AOS due to stroke. Patients with AOS and no or equivocal aphasia due to ischemic stroke were identified through a pre-existing database. Seven subjects were identified. Five had pure AOS, and two had equivocal aphasia. MRI lesion analysis revealed maximal overlap spanning the left premotor and motor cortices. While both neurodegenerative AOS and stroke induced pure AOS involve the premotor cortex, further studies are needed to establish whether stroke-induced AOS and neurodegenerative AOS share a common anatomic substrate.

  16. Pure gravities via color-kinematics duality for fundamental matter

    Energy Technology Data Exchange (ETDEWEB)

    Johansson, Henrik [Theory Division, Physics Department, CERN, CH-1211 Geneva 23 (Switzerland); Ochirov, Alexander [Institut de Physique Théorique, CEA-Saclay, F-91191 Gif-sur-Yvette cedex (France)

    2015-11-06

    We give a prescription for the computation of loop-level scattering amplitudes in pure Einstein gravity, and four-dimensional pure supergravities, using the color-kinematics duality. Amplitudes are constructed using double copies of pure (super-)Yang-Mills parts and additional contributions from double copies of fundamental matter, which are treated as ghosts. The opposite-statistics states cancel the unwanted dilaton and axion in the bosonic theory, as well as the extra matter supermultiplets in the supergravity theories. As a spinoff, we obtain a prescription for obtaining amplitudes in supergravities with arbitrary non-self-interacting matter. As a prerequisite, we extend the color-kinematics duality from the adjoint to the fundamental representation of the gauge group. We explain the numerator relations that the fundamental kinematic Lie algebra should satisfy. We give nontrivial evidence supporting our construction using explicit tree and loop amplitudes, as well as more general arguments.

  17. Liquid structure of pure iron by X-ray diffraction

    Institute of Scientific and Technical Information of China (English)

    Jun Luo; Qijie Zhai; Pei Zhao; Xubo Qin

    2004-01-01

    The liquid structure of pure iron at 1540, 1560 and 1580℃ was studied by X-ray diffraction. The results show that near the melting point there is a medium-range order structure that fades away with the increasing temperature. The average nearest distance of atoms is almost independent of the melts temperature, but the average coordination number, the atom cluster size and the atom number in an atom cluster all decrease with the increasing temperature of the melt. Near the melting point there area lot of atom clusters in the pure iron melt. The atom cluster of pure iron has the body-centered cubic lattices, which are kept from the solid state. And the body-centered cubic lattices connect into network by occupying a same edge. The atoms in the surrounding of the atom clusters are arranged disorderly.

  18. Acquired pure red cell aplasia in a child.

    Directory of Open Access Journals (Sweden)

    Sharma R

    2002-01-01

    Full Text Available Primary acquired pure red cell aplasia is a rare occurrence in childhood. An eleven-year old boy presented to us with pallor, which required multiple packed red cell transfusions. He did not have hepatosplenomegaly, jaundice or lymphadenopathy. Bone marrow examination revealed the diagnosis of pure red cell aplasia. All possible investigations were done to exclude secondary causes of pure red cell aplasia. No secondary cause was found on investigations. Rheumatoid factor and anti-nuclear antibodies were positive. He was started on oral steroids, to which he did not respond. He was then given cyclosporine A. Response to cyclosporine was dramatic and the child now does not require any transfusions.

  19. [Anesthetic management for a patient with pure autonomic failure].

    Science.gov (United States)

    Kida, K; Mori, M; Yoshitake, S; Sendaya, K; Iwasaka, H; Taniguchi, K

    1997-06-01

    Pure autonomic failure is characterized by orthostatic hypotension, sweating disorder, urinary incontinence, and syncope. A 64 year-old man with pure autonomia failure was scheduled for suprapubic prostatectomy. We monitoring direct arterial pressure and inserted pulmonary artery catheter prior to the induction of anesthesia. General anesthesia was induced with diazepam 10 mg, fentanyl 0.3 mg, and vecuronium 8 mg for tracheal intubation. Anesthesia was maintained with sevoflurane (0.2-1.5%), 60% nitrous oxide in oxygen supplemented with intermittent epidural anesthesia. During anesthesia, blood loss was immediately replaced with banked blood because autonomic failure could not compensate hypovolemia well. Epidural anesthesia in this patient was considered to cause less hypotension than in patients with normal autonomic function. Therefore, we think epidural anesthesia is a useful anesthesia method for patients with pure autonomic failure. The emergence from anesthesia was smooth and no complications were seen during the perioperative period.

  20. Preparation and characteristics of porous ceramics

    Institute of Scientific and Technical Information of China (English)

    Dongmei SHAO; Peiping ZHANG; Liyan MA; Juanjuan LIU

    2007-01-01

    Pyrophyllite is always used for making porous ceramics. In order to design the preparation technics of porous ceramics with pyrophyllite reasonably we must know the classifications, characteristics, properties and applications of porous ceramics. The classification and characteristics of porous ceramics are reviewed in this article; and several common preparations with their advantages and disadvantages are also introduced. The authors discussed the problems existing in researching and developing process for porous ceramics, and forecasted the development prospect of porous ceramics.