WorldWideScience
 
 
1

OPERA experiment  

International Nuclear Information System (INIS)

OPERA is an accelerator experiment designed to explore Super-Kamiokande suggested ????? oscillation region in CNGS beam from CERN to LNGS. The key technique in OPERA is modern emulsion read out which applied to CHORUS and DONUT experiments. ECC technique which used in DONUT and OPERA has good modularity to enlarge apparatus for future Neutrino Factory experiments.

2003-05-01

2

OPERA experiment  

CERN Multimedia

OPERA is an accelerator experiment designed to explore Super- Kamiokande suggested nu//mu arrow left right nu//tau oscillation region in CNGS beam from CERN to LNGS. The key technique in OPERA is modern emulsion read out which applied to CHORUS and DONUT experiments. ECC technique which used in DONUT and OPERA has good modularity to enlarge apparatus for future Neutrino Factory experiments.

Komatsu, M

2003-01-01

3

OPERA experiment  

Energy Technology Data Exchange (ETDEWEB)

OPERA is an accelerator experiment designed to explore Super-Kamiokande suggested {nu}{sub {mu}}{r_reversible}{nu}{sub {tau}} oscillation region in CNGS beam from CERN to LNGS. The key technique in OPERA is modern emulsion read out which applied to CHORUS and DONUT experiments. ECC technique which used in DONUT and OPERA has good modularity to enlarge apparatus for future Neutrino Factory experiments.

Komatsu, M. E-mail: komatsu@flab.phys.nagoya-u.ac.jp

2003-05-01

4

Mixture Experiments  

Energy Technology Data Exchange (ETDEWEB)

A mixture experiment involves combining two or more components in various proportions or amounts and then measuring one or more responses for the resulting end products. Other factors that affect the response(s), such as process variables and/or the total amount of the mixture, may also be studied in the experiment. A mixture experiment design specifies the combinations of mixture components and other experimental factors (if any) to be studied and the response variable(s) to be measured. Mixture experiment data analyses are then used to achieve the desired goals, which may include (i) understanding the effects of components and other factors on the response(s), (ii) identifying components and other factors with significant and nonsignificant effects on the response(s), (iii) developing models for predicting the response(s) as functions of the mixture components and any other factors, and (iv) developing end-products with desired values and uncertainties of the response(s). Given a mixture experiment problem, a practitioner must consider the possible approaches for designing the experiment and analyzing the data, and then select the approach best suited to the problem. Eight possible approaches include 1) component proportions, 2) mathematically independent variables, 3) slack variable, 4) mixture amount, 5) component amounts, 6) mixture process variable, 7) mixture of mixtures, and 8) multi-factor mixture. The article provides an overview of the mixture experiment designs, models, and data analyses for these approaches.

Piepel, Gregory F.

2007-12-01

5

Simulated experiments  

International Nuclear Information System (INIS)

A cybernetic model has been developed to elucidate some of the main principles of the growth regulation system in the epidermis of the hairless mouse. A number of actual and theoretical biological experiments have been simulated on the model. These included simulating the cell kinetics as measured by pulse labelling with tritiated thymidine and by continuous labelling with tritiated thymidine. Other simulated experiments included steady state, wear and tear, painting with a carcinogen, heredity and heredity and tumour. Numerous diagrams illustrate the results of these simulated experiments. (JIW)

1977-01-01

6

Hydronuclear experiments  

Energy Technology Data Exchange (ETDEWEB)

Hydronuclear experiments, a method for assessing some aspects of nuclear weapon safety, were conducted at Los Alamos during the 1958 to 1961 moratorium on nuclear testing. The experiments resulted in subcritical multiplying assemblies or a very slight degree of supercriticality and, in some cases, involved a slight, but insignificant, fission energy release. These experiments helped to identify so-called one-point safety problems associated with some of the nuclear weapons systems of that time. The need for remedial action was demonstrated, although some of the necessary design changes could not be made until after the resumption of weapons testing at the end of 1961.

Thorn, R.N.; Westervelt, D.R.

1987-02-01

7

Hydronuclear experiments  

International Nuclear Information System (INIS)

[en] Hydronuclear experiments, a method for assessing some aspects of nuclear weapon safety, were conducted at Los Alamos during the 1958 to 1961 moratorium on nuclear testing. The experiments resulted in subcritical multiplying assemblies or a very slight degree of supercriticality and, in some cases, involved a slight, but insignificant, fission energy release. These experiments helped to identify so-called one-point safety problems associated with some of the nuclear weapons systems of that time. The need for remedial action was demonstrated, although some of the necessary design changes could not be made until after the resumption of weapons testing at the end of 1961

1987-01-01

8

Experimenting with a design experiment  

Digital Repository Infrastructure Vision for European Research (DRIVER)

The design experiment is an experimental research method that aims to help design and further develop new (policy) instruments. For the development of a set of guidelines for the facilitation of citizens’ initiatives by local governments, we are experimenting with this method. It offers good opportu...

Bakker, Judith; Denters, Bas

9

Educational Experiences and Experience Styles  

Directory of Open Access Journals (Sweden)

Full Text Available The on-going revival of educational processes as experiences leads to a complex reflection on the characteristics that can make such processes more meaningful, especially on a personal level. In this article we propose a cultural framework that, starting from the definition of a set of general features characterizing the 'experience', allows to correlate universalities of the adopted model of process - in our case the 'organic process' - with the characteristics of individuals, including the preferences about the mode of interaction. This framework allows to go beyond the concept of learning styles and to introduce a more comprehensive set of styles - the experience styles - starting from which, once the appropriate indicators have been identified, one can perform a more comprehensive and precise monitoring of the educational experience, and more in general of all experiences.

Carlo Giovannella; Andrea Camusi; Chiara Spadavecchia

2010-01-01

10

Antimatter Experiments  

CERN Document Server

Antimatter should behave in identical fashion to matter if a form of spacetime symmetry called CPT invariance holds. Two experiments at CERN near Geneva are testing this hypothesis using antihydrogen atoms

2004-01-01

11

Anesthesia Experience  

Science.gov (United States)

Anesthesia Experience Share PRINT Print Home > FAQs About Anesthesia and Surgery > Detail Page Are there different kinds ... Surgery Important questions seniors should ask. LEARN MORE Anesthesia Topics Quick Links Choose a topic: Featured Video: ...

12

Subsatellite experiments  

Energy Technology Data Exchange (ETDEWEB)

The history of Soviet participation in international studies of climatic and environmental change using satellite data is reviewed, including discussion of the FIFE and Kursk experiments. The results of the FIFE-1989 experiment are examined. The study was conducted with the participation of Soviet specialists in the summer of 1989 in Kansas. Objectives included the gathering of data for the interpretation of satellite observations of the ground-cover composition of a Kansas prairie.

Grin, A.M.; Kozoderov, V.V. (Institut Geografii, Moscow (USSR) Otdel Vychislitel' noi Matematiki, Moscow (USSR))

1990-12-01

13

Control experiment  

Science.gov (United States)

There is a type of experiment in which a scientist uses a control variable approach. All conditions in the experiment will be the same except for one variable. When testing water tolerance of barley plants, for example, you could not water one plant, over-water one plant, under-water another plant, and water the last plant with the optimal amount of water and observe the results.

Peggy Greb (USDA;ARS)

2006-05-23

14

Chlorine Experiments  

Science.gov (United States)

This site is provided by the American Chemistry Council's Science Center. The first experiment is called Sunscreen and Light Energy, which shows how chlorine is an ingredient in sunscreen and how it helps protect people from the sun's damage. The other experiment, called Antifreeze and the Freezing Point of Water, teaches how chlorine is an important component in antifreeze. Using antifreeze, foam cups, glass vials, and other simple ingredients, students learn how the liquid helps keep cars and other engines running during winter.

2008-01-01

15

Brightness experiments.  

UK PubMed Central (United Kingdom)

This chapter presents an overview of quantitative fluorescence brightness experiments with special emphasis on single-color measurements of protein homo-interactions inside living cells. We discuss practical considerations in the choice of the fluorescent labels and the calibration measurements necessary for quantitative interpretation of brightness experiments. Methods to identify and avoid common pitfalls, such as bleaching and saturation, are addressed. We examine the interpretation of brightness data with moment analysis. In particular, we focus on how to avoid or correct for undersampling, as well as how to characterize and adjust for photon detector effects. We conclude by describing brightness titration experiments which determine the binding curve and stoichiometry of a protein from apparent brightness data.

Macdonald PJ; Johnson J; Chen Y; Mueller JD

2014-01-01

16

Channeling experiment  

International Nuclear Information System (INIS)

Channeling of water flow and tracer transport in real fractures in a granite body at Stripa have been investigated experimentally. The experimental site was located 360 m below the ground level. Two kinds of experiments were performed. In the single hole experiments, 20 cm diameter holes were drilled about 2.5 m into the rock in the plane of the fracture. Specially designed packers were used to inject water into the fracture in 5 cm intervals all along the fracture trace in the hole. The variation of the injection flowrates along the fracture were used to determine the transmissivity variations in the fracture plane. Detailed photographs were taken from inside the hole and the visual fracture aperture was compared with the injection flowrates in the same locations. Geostatistical methods were used to evaluate the results. Five holes were measured in great detail. In addition 7 holes were drilled and scanned by simpler packer systems. A double hole experiment was performed where two parallel holes were drilled in the same fracture plane at nearly 2 m distance. Pressure pulse tests were made between the holes in both directions. Tracers were injected in 5 locations in one hole and monitored for in many locations in the other hole. The single hole experiment and the double hole experiment show that most of the fracture planes are tight but that there are open sections which form connected channels over distances of at least 2 meters. It was also found in the double hole experiment that the investigated fracture was intersected by at least one fracture between the two holes which diverted a large amount of the injected tracers to several distant locations at the tunnel wall. (authours)

1990-01-01

17

Rutherford Experiment  

Science.gov (United States)

The simulation below shows an interaction between two "particles." The interaction force is a 1/r2 force; that is, the interaction force varies as 1/r2 where r is the distance between them. However, it only "exists" when the particles are less than 0.2 m apart. This collision is similar to the type of collisions that occurred between alpha particles and gold nuclei in the famous Rutherford experiment. This experiment showed that the very massive nuclei is very small compared to the size of the atom.

Christian, Wolfgang; Belloni, Mario

2008-02-19

18

Birthday Experiment  

Science.gov (United States)

This resource consists of a Java applet and expository text. The applet is a simulation of the birthday experiment: a sample of size n is chose at random and with replacement from the first m positive integers. The random variable of interest is the number of distinct sample values. The event of interest is that all sample values are distinct.

Siegrist, Kyle

19

Dirac experiment  

CERN Document Server

The main objective of DIRAC experiment is the measurement of the lifetime tau of the exotic hadronic atom consisting of pi /sup +/ and pi /sup -/ mesons. The lifetime of this atom is determined by the decay mode pi /sup +/ pi /sup -/ to pi /sup 0/ pi /sup 0/ due to the strong interaction. Through the precise relationship between the lifetime and the S-wave pion-pion scattering length difference a/sub 0/-a/sub 2/ for isospin 0 and 2 (respectively), a measurement of tau with an accuracy of 10% will allow a determination of a/sub 0/-a/sub 2/at a 5% precision level. Pion-pion scattering lengths have been calculated in the framework of chiral perturbation theory with an accuracy below 5%. In this way DIRAC experiment will provide a crucial test of the chiral symmetry breaking scheme in QCD effective theories at low energies. (19 refs).

Gómez, F; Afanasev, L; Benayoun, M; Brekhovskikh, V; Caragheorgheopol, G; Cechák, T; Chiba, M; Constantinescu, S; Doudarev, A; Dreossi, D; Drijard, Daniel; Ferro-Luzzi, M; Gallas, M V; Gerndt, J; Giacomich, R; Gianotti, P; Goldin, D; Gorin, A; Gortchakov, O; Guaraldo, C; Hansroul, M; Hosek, R; Iliescu, M; Jabitski, M; Kalinina, N; Karpoukhine, V; Kluson, J; Kobayshi, M; Kokkas, P; Komarov, V; Koulikov, A; Kouptsov, A; Krouglov, V; Krouglova, L; Kuroda, K I; Lanaro, A; Lapshine, B; Lednicky, R; Leruste, P; Levisandri, P; López-Aguera, A; Lucherini, V; Mäki, T; Manuilov, I; Montanet, L; Narjoux, J L; Nemenov, L; Nikitin, M; Nunez Pardo, T; Okada, K; Olchevskii, V; Pazos, A; Pentia, M; Penzo, Aldo L; Perreau, J M; Petrascu, C; Pló, M; Ponta, T; Pop, D; Riazantsev, A; Rodríguez, J M; Rodriguez Fernandez, A; Rykaline, V; Santamarina, C; Saborido, J; Schacher, J; Sidorov, A; Smolik, J; Takeutchi, F; Tarasov, A; Tauscher, L; Tobar, M J; Trusov, S; Vasquez, P; Vlachos, S; Yazkov, V; Yoshimura, Y; Zrelov, P

2001-01-01

20

Dirac experiment  

International Nuclear Information System (INIS)

The main objective of DIRAC experiment is the measurement of the lifetime ? of the exotic hadronic atom consisting of ?+ and ?- mesons. The lifetime of this atom is determined by the decay mode ?+ ?- ? ?0 ?0 due to the strong interaction. Through the precise relationship between the lifetime and the S-wave pion-pion scattering length difference |a0 - a2| for isospin 0 and 2 (respectively), a measurement of ? with an accuracy of 10% will allow a determination of |a0 - a2| at a 5% precision level. Pion-pion scattering lengths have been calculated in the framework of chiral perturbation theory with an accuracy below 5%. In this way DIRAC experiment will provide a crucial test of the chiral symmetry breaking scheme in QCD effective theories at low energies.

2001-01-01

 
 
 
 
21

Polarization experiments  

International Nuclear Information System (INIS)

[en] In a theoretical review of polarization experiments two important points are emphasized: (a) their versatility and their relevance to a large variety of aspects of hadron physics (tests of basic symmetries; a probe of strong interaction dynamics; a tool for hadron spectroscopy); (b) the wealth of experimental data on polarization parameters in pp and np scattering in the Regge language and in the diffraction language. (author)

1977-01-01

22

Experiment 7  

CERN Multimedia

Over-all view of the arrangement of counters around the polarized target in the kaon-polarized proton experiment. The beam enters through the quadrupole magnet on the left, and strikes the target placed in a 18.5 kG field (one pole of the magnet is just visible above the ring of counters). The scatterred kaon and recoil proton are detected by the counters on the ring and recorded onto magnetic tape.

1968-01-01

23

Kamini experiments  

International Nuclear Information System (INIS)

The Kalpakkam MINI (KAMINI) Reactor is a 233U-fueled, light water moderated, natural convection cooled, beryllium oxide reflected, research reactor and located at the Indira Gandhi Centre for Atomic Research at Kalpakkam, India. Because of the highly efficient reflector material BeO, it has a very low fuel inventory (?612 g). The reactor is designed to operate at a nominal power of 30 kW. Cooling of the reactor is by natural convection and an external heat exchanger cools the tank water to control the inlet temperature. Two absorber type plates are used for control as well as emergency shutdown of the reactor. Experimental facilities consist of three beam tubes, two irradiation sites outside the reflector (thimble locations) and one irradiation site adjacent to the core where irradiation samples can be introduced and withdrawn fast with the help of Pneumatic Fast Transit System (PFTS). At 30 kW reactor power, the fluxes at PFTS, north thimble location and at south thimble location are 2.3x1012, 3.93x1010 and 7.20x109 n/cm2.s respectively. The built-in maximum excess reactivity of the reactor is restricted to 300 pcm, and this reactivity is apportioned to take care of various effects like coolant temperature load, irradiation sample load, operating margin, xenon load and long-term burn-up losses. Also this value is less than ? ensuring safe operation. The experiments conducted in this reactor during commissioning stage are: approach to criticality, moderator temperature coefficient of reactivity, void coefficient of reactivity, absolute power calibration measurement, neutron flux measurement at beam tube end, thimble locations and PFTS and SCP worth measurement. This paper discusses the details of these experiments and the results of the experiments. (author)

2007-01-01

24

XMASS experiment  

International Nuclear Information System (INIS)

The XMASS project utilizes ultrapure liquid xenon and aims to detect pp and 7Be solar neutrinos by means of ?+e scatterings. Our goal is a 10 t scale detector in which an ultralow background can be realized in a fiducial volume. Since it requires extremely low background, it will give great opportunities for us to search for dark matter and double beta decay signals with high sensitivity. Here we will discuss a detector design common for solar neutrino and dark matter detection and a new design devoted for the double beta decay experiment. The status of the current 100 kg xenon detector will also be shown. (author)

2004-01-01

25

Experimenting with a design experiment  

Directory of Open Access Journals (Sweden)

Full Text Available The design experiment is an experimental research method that aims to help design and further develop new (policy) instruments. For the development of a set of guidelines for the facilitation of citizens’ initiatives by local governments, we are experimenting with this method. It offers good opportunities for modeling interventions by testing their instrumental validity –the usefulness for the intended practical purposes. At the same time design experiments are also useful for evaluating the empirical validity of theoretical arguments and the further development of these arguments in the light of empirical evidence (by using e.g. the technique of pattern matching). We describe how we have applied this methodology in two cases and discuss our research approach. We encountered some unexpected difficulties, especially in the cooperation with professionals and citizens. These difficulties complicate the valid attribution of causal effects to the use of the new instrument. However, our preliminary conclusion is that design experiments are useful in our field of studyEl experimento de diseño es un método de investigación experimental que tiene como objetivo diseñar y desarrollar posteriormente nuevas herramientas (políticas). En este artículo experimentamos con este método para desarrollar un conjunto de directrices que permitan a los gobiernos locales facilitar las iniciativas ciudadanas. El método ofrece la oportunidad de modelar las intervenciones poniendo a prueba su validez instrumental (su utilidad para el fin práctico que se proponen). Al mismo tiempo, los experimentos de diseño son útiles también para evaluar la validez empírica de las discusiones teóricas y el posterior desarrollo de esas discusiones a la luz de la evidencia empírica (usando, por ejemplo, técnicas de concordancia de patrones). En este trabajo describimos cómo hemos aplicado este método a dos casos y discutimos nuestro enfoque de investigación. Hemos hallado diversas dificultades inesperadas, sobre todo en la colaboración de profesionales y ciudadanos. Esas dificultades hacen más complicado que se puedan atribuir de forma válida efectos causales al nuevo instrumento. Sin embargo, nuestra conclusión preliminar es que los experimentos de diseño son útiles en nuestro campo de estudio.

Bakker, Judith; Denters, Bas

2012-01-01

26

Operating experience  

International Nuclear Information System (INIS)

In 1987, Westinghouse Hanford Company began operating a first-generation integrated safeguards system in the Plutonium Finishing Plant storage vaults. This Vault Safety and Inventory System is designed to integrate data into a computer-based nuclear material inventory monitoring system. The system gathers, in real time, measured physical parameters that generate nuclear material inventory status data for thousands of stored items and sends tailored report to the appropriate users. These data include canister temperature an bulge data reported to Plant Operations and Material Control and Accountability personnel, item presence and identification data reported to Material Control and Accountability personnel, and unauthorized item movement data reported to Security response forces and Material Control and Accountability personnel. The Westinghouse Hanford Company's experience and operational benefits in using this system for reduce radiation exposure, increase protection against insider threat, and real-time inventory control are discussed in this paper.

1991-01-01

27

Particle physics experiments 1983  

International Nuclear Information System (INIS)

The report describes work carried out in 1983 on experiments approved by the Particle Physics Experiments Selection Panel. The contents consist of unedited contributions from each experiment. (author)

1983-01-01

28

Particle physics experiments 1987  

International Nuclear Information System (INIS)

[en] This report describes work carried out in 1987 on experiments approved by the Particle Physics Experiments Selection Panel (United Kingdom). The contents consist of unedited contributions from each experiment. (author)

1988-01-01

29

Particle physics experiments 1978  

International Nuclear Information System (INIS)

[en] This report contains descriptions of the work performed in 1978 on particle physics experiments which have been approved by the Particle Physics Experiments Selection Panel. The contents consist of the unedited contributions from each experiment. (author)

1979-01-01

30

Particle physics experiments  

International Nuclear Information System (INIS)

The report of the Rutherford Appleton Laboratory describes the work carried out in 1985 on experiments approved by the Particle Physics Experiments Selection Panel. The contents consist of unedited contributions from each experiment. (author).

1986-01-01

31

Particle physics experiments 1986  

International Nuclear Information System (INIS)

The paper presents research work carried out in 1986 on 52 elementary particle experiments approved by the Particle Physics Experiments Selection Panel. Most of the experiments were collaborative and involved research groups from different countries. About half of the experiments were conducted at CERN, the remaining experiments employed the accelerators: LAMPT, LEP, PETRA, SLAC, and HERA. The contents consist of unedited contributions from each experiment. (U.K.).

1987-01-01

32

Data acquisition. GRAAL experiment. Hybrid reactor experiment. AMS experiment; Acquisition de donnees. Experience GRAAL. Experience reacteurs hybrides. Experience AMS  

Energy Technology Data Exchange (ETDEWEB)

The main activity of the data acquisition team has consisted in hardware and software developments for the GRAAL experiment with the trigger board, for the `Reacteurs Hybrides` group with an acquisition board ADCVME8V and for the AMS experiment with the monitoring of the aerogel detector. (authors) 2 figs.

Barancourt, D.; Barbier, G.; Bosson, G.; Bouvier, J.; Gallin-Martel, L.; Meillon, B.; Stassi, P.; Tournier, M. [Inst. des Sciences Nucleaires, Grenoble-1 Univ., 38 (France)

1997-12-31

33

The User Experience  

Science.gov (United States)

User experience (UX) is about arranging the elements of a product or service to optimize how people will interact with it. In this article, the author talks about the importance of user experience and discusses the design of user experiences in libraries. He first looks at what UX is. Then he describes three kinds of user experience design: (1)…

Schmidt, Aaron

2010-01-01

34

The Swedish experience  

Science.gov (United States)

Text VersionPage 1. Rutqvist LE - The Swedish experience The Swedish experience L. E. Rutqvist, MD, Ph. D Swedish Match AB Maria Skolgata 83 ... More results from www.fda.gov/downloads/advisorycommittees/committeesmeetingmaterials

35

Future Solar Neutrino Experiments  

Energy Technology Data Exchange (ETDEWEB)

The value of future solar neutrino experiments is discussed from particle physics and astrophysics points of view based on current understanding of solar neutrino oscillations. R and D statuses of future experiments are also discussed.

Nakahata, M. [Kamioka Observatory, Institute for Cosmic Ray research, University of Tokyo, Higashi-Mozumi, Kamioka-cho, Hida-shi, Gifu, Japan, 506-1205 (Japan)]. E-mail: nakahata@suketto.icrr.u-tokyo.ac.jp

2005-08-15

36

The AMS experiment  

CERN Document Server

The Alpha Magnetic Spectrometer (AMS) detector will be installed as a particle physics experiment on the International Space Station. It will look for antimatter pockets in space. AMS is a CERN recognised experiment.

Laurent Guiraud

1999-01-01

37

SILEX Experiment System Operations.  

Science.gov (United States)

The European Space Agency is going to conduct an inter orbit link experiment which will connect a low Earth orbiting satellite and a Geostationary satellite via optical terminals. This experiment has been called SILEX (Semiconductor Inter satellite Link E...

B. Demelenne

1994-01-01

38

The ITALSAT experiment  

Science.gov (United States)

Some information is given on the ITALSAT millimetric waves propagation experiment, which is to be conducted with the ITALSAT satellite, whose launch is foreseen for the middle of 1990. The purpose of the experiment is one of experimenting with advanced technologies and techniques employing the 20/30 GHz bands in wideband telecommunications. Among the most qualified features of this system are the multispot antenna and the exchange function performed directly onboard. Details of the experiment are given.

Paraboni, A.

1989-08-01

39

COMPASS experiment and computers  

International Nuclear Information System (INIS)

The paper, dealing with the COMPASS (COmmon Muon and Proton Apparatus for Structure and Spectroscopy) experiment, is structured as follows: COMPASS experiment (preparation, run); Data acquisition (data acquisition architecture, data storage, data organization, CDR and CASTOR, COOOL, data processing, data production mechanism), System performance overview; and Experience from practical operation. (P.A.)

2005-01-01

40

Future solar neutrino experiments  

Energy Technology Data Exchange (ETDEWEB)

The status of several neutrino experiments now being constructed and others under development is reviewed. These experiments have the potential to provide higher statistics, sensitivity to all neutrino types and different energy thresholds than presently available. The results from this next generation of experiments could provide an explanation for the low solar neutrino fluxes observed to date. (orig.).

McDonald, A.B. [Queen`s Univ., Kingston (Canada). SNO Inst.

1996-05-01

 
 
 
 
41

Small experiment at ISABELLE  

International Nuclear Information System (INIS)

Two small experiments, one at ISR and one at Fermilab, are discussed. Both experiments were small by today's standards, had to be run with very limited access to the detector, and explored in detail the s dependence of a special feature of the p--p interactions. The application of these types of experiments to ISABELLE is considered

1977-07-18

42

Python Experiment Suite Implementation  

Directory of Open Access Journals (Sweden)

Full Text Available This manuscript describes the implementation of a generic experiment management tool called Python Experiment Suite, an open source software framework written in Python, that supports scientists, engineers and others to conduct automated software experiments on a larger scale with features like parameter evaluations in grid search manner, result logging and support for multiple cores, amongst others.

2010-01-01

43

Nucleon lifetime experiments  

Energy Technology Data Exchange (ETDEWEB)

Nucleon instability is considered in light of Grand Unification Theories. The subject areas include the experimental problem of observing decays in the presence of muon and neutrino background; and experimental efforts at the Homestake Mine, the Kolar Gold Field experiment, and the Case-Western-Irvine experiment. Future experiments at Frejus, and projects based on Cherenkov emission are also discussed. (GHT)

Treille, D.

1981-10-23

44

Results from hadroproduction experiments  

CERN Multimedia

The hadroproduction experiments HARP, MIPP and NA61 (SHINE) as well as their implications for neutrino physics are discussed. HARP measurements have already been used for precise predictions of neutrino beams in K2K and MiniBooNE/SciBooNE experiments and are also being used to improve the atmospheric neutrino flux predictions and to help in the optimization of neutrino factory and super-beam designs. The MIPP experiment has nearly finalized measurements of hadron production from the NuMI target used in the MINOS experiment. First measurements released recently by the NA61 (SHINE) experiment are of significant importance for a precise prediction of the J-PARC neutrino beam used for the first stage of the T2K experiment. All three experiments - HARP, MIPP and NA61 - provide also a large amount of input for validation and tuning of hadron production models in Monte-Carlo generators.

Popov, Boris A

2011-01-01

45

Neutrino experiments; Experiences sur les neutrinos  

Energy Technology Data Exchange (ETDEWEB)

After participating in a several experiments near the reactor at Bugey, at distances from 15 to 100 m from the reactor the laboratory joined a collaboration for search of effect of neutrino oscillations at longer distances (1 km) from the neutrinos` point of origin. The zone covered by this experiment raises a particular interest because the results of several underground experiments on the atmospheric neutrinos indicated that oscillation could appear in this zone. The Chooz collaboration, reported here, joined three American universities (Philadelphia, New Mexico and Irvine), two Italian universities (Pisa and Trieste), the Kurchatov Institute in Moscow and two French laboratories (the LAPP in Annecy and the College de France). The first data have been recorded during the autumn of 1996 prior to the commissioning of the reactors (2 x 4200 MW{sub th}), to measure the background noise. The detector is a target of 6 t liquid scintillator doped with Gd, sunk in 120 t non-doped liquid scintillator separated by thin transparent wall. The target is viewed by 192 photomultipliers. The scintillator liquids are carried up to the detector and then to the exterior tanks by a tunnel of 200 m length and a height gradient of 15 m. The fragility of the detector imposes a simultaneous filling of its components, with an accuracy of the order of 1 cm. A 200 MHz sampling system of the photomultiplier pulses signing the neutrino interaction was developed in order to obtain simultaneously information on the pulse-height, timing and shape. This experiment could serve as a prototype for heavier experiments conceived in US, in Russia at Rovno and Krasnoyarsk, and in France, at 15 km from the Perry reactor, at 500 m underground. Still more ambitious is the Japan project at Kamioka, at 160 m distance from a nuclear reactor. The experiment at Perry will push the electron neutrino upper mass estimates down to 0.01 eV

Kerret, H. de; Kryn, D.; Lefievre, B.; Obolensky, M.; Veron, D.; Vyrodov, V. [Lab. de Physique Corpusculaire et Cosmologie, College de France, 75 - Paris (France)

1997-12-31

46

Experience Communication and Aesthetics  

DEFF Research Database (Denmark)

In this article the term "experience communication" will be introduced and discussed. It will be illustrated how different concepts of aesthetical experiences are an integrated part of experience communication and how these concepts are produced within the industries of consumerism, branding and entertainment. With a point of departure in Immanuel Kant's "the sublime" (2005, orig. 1790); Edmund Burke's " the sublime" (1998, orig. 1757); " Jean Francois Lyotard's "the sublime" (1984); Mihaly Csikszentmihalyi's "flow ", (1997); Roland Barthes' "punctum" (1987) " and David Favrholdt's "the inexpressible experience"( 2000), a survey of different forms of aesthetical experiences in connection with the field of experience communication will be presented. In addition to the more established concepts of the aesthetical experience this article introduces a new term " the interference" which is  an aesthetical experience which is relevant in regards to some of the aesthetical experiences which we are met with within the industry of experience communication. The term "interference"  in the context of experience communication can be described as a kind of "intrusion," capable of creating a certain type of beauty in the form of a new aesthetic expression. An aesthetic expression which is based on "interference" denotes the space that may exist between what we know and what we don't know. With a point of departure in empirical studies it will be illustrated how these different concepts of the aesthetical experiences are produced within the field of experience communication. Aesthetical experiences may be a product of the concept of novelty, the unpredictable, the inexpressible, the making of identity, the self-actualization, the self-staging, the interactive aspect, the co-producer role (the prosumer role), the user to user aspect (web 2.0), the personal engagement or the community spirit. This increasing demand of experiences reflects the postmodern cultural trends where rules for how to think and behave no longer exist. Thisresults in individualism, where the identity of the human being has changed from something which was a given to something which each human being has to manage individually. As a consequence the human being experiences an increasing sense of insecurity and restless seeking after identity and recognition, which is reflected in an increasing demand of among other things self-actualization. The individualization of the human being can lead to loneliness and a need of participating in communities as a replacement of an overall fixed point in one's life. (Anthony Giddens, 1990, 1991; Zygmunt Bauman, 1997; Carsten René Jørgensen, 2002). The field of communication is consequently experiencing a great challenge in terms of creating experience based communication designs which meet the need of self-actualization and creation of own identities of the target audiences.  

Thorlacius, Lisbeth

47

Laser target experiments  

International Nuclear Information System (INIS)

The year 1980 witnessed several new directions for the Laser Target Experiments Program at KMSF. Among the highlights were the conclusion of wavelength scaling experiments at 0.53 ?m and 1.05 ?m, and the initiation of long-gradient-length interaction studies using the gas jet target. The latter experiments required the construction and outfitting of a new laboratory for target irradiation experiments which do not require spherically symmetric illumination. A number of brief experiments answered questions about scattered light spectra and neutron-yield scaling, while others raised new questions about second-harmonic generation and Z-dependent interactions. Integration of the KMSF program under the lead laboratory was exemplified by the participation of scientists from Livermore and NRL in the planning and execution of several experiments

1980-01-01

48

Michelson-Morley Experiment  

Science.gov (United States)

This web page contains a simulation that recreates the Michelson-Morley experiment. The main objective of this experiment was to prove the existence of the medium in which light propagated: the luminiferous aether. This simulation allows the user to experiment with the interferometer by changing the speed of light and rotating its plane. It also has the possibility to include the aether. At the bottom of the page a l;ink to the theory involved is provided.

Fowler, Michael; Ching, Jacquie H.

2008-07-30

49

GAMS experiment at CERN  

International Nuclear Information System (INIS)

GAMS experiment, which studies meson resonances and non-qq-bar states decaying to neutral states is now in progress in the reaction pp ? ppM0 with 450 GeV/c proton beam. The experiment is scheduled to collect data untill September in 1992. I would like to introduce the motivation, the experimental set up, the feature of collected data and the schedule of the experiment. (author)

1992-01-01

50

Future Neutrino Experiments  

International Nuclear Information System (INIS)

[en] There are a number of future neutrino experiments addressing fundamental questions about the neutrino and about what the neutrino can tell us about the universe. A class of these experiments are long baseline neutrino oscillation ve appearance searches which can measure the final unknowns of the 3x3 neutrino mixing matrix and look for CP violation in the neutrino sector. The massive detectors needed for these experiments can also search for proton decay and measure extra-terrestrial neutrino sources. There are a number of efforts worldwide to launch these experiments. These efforts, with a focus on US plans, are described.

2009-12-17

51

Moving platform experiments  

Energy Technology Data Exchange (ETDEWEB)

Proceedings from the absolute space-time theory, the effects of the drag-of-light experiments, in which medium and interferometer move inertially with respect to each other or with respect to absolute space (called by us the moving platform experiments), are calculated. An account on the performance of all four possible variants, three of which are carried out for the first time is given. The results obtained confirm the predictions and, considered together with the results of the rotating disk experiments, reveal the failure of the principles of relativity. The phenomenon of drag of light aberration is theoretically considered and experiment for its observation, is proposed. 23 refs.

Marinov, S. (Laboratory for Fundamental Physical Problems, Elin Pelin (Bulgaria))

1981-10-01

52

The Experience Factory: Packaging Software Experience  

UK PubMed Central (United Kingdom)

allow the packaging of successful experience. Because the overallsolutions are both technical and managerial, model building requires the support of a variety ofdisciplines both within and outside the discipline.The overall approach requires an approach, similar to the scientific method, that allows us toexperiment, measure, learn, build better models, and reuse past experiences. For the past 15 years, wehave been applying such an approach, the Quality Improvement Paradigm,in the Software EngineeringLaboratory (SEL) at NASA/GSFC. It adapts the scientific method to software development. As statedin the first chapter, the basic steps involve:Planning: an iterative process involving characterizing the current project and its environment, setting thequantifiable goals for successful project performance and improvement, and choosing the appropriateprocess model and supporting methods and tools for this project.Execution: a closed-loop project cycle which involves executing the pr

53

Miller-Urey Experiment  

Science.gov (United States)

This applet, from the University of California at San Diego, offers a simulation of the classic origin of life experiment as originally performed by Stanley Miller and Harold Urey in 1953. The user selects chemicals, activates a spark, and finds out what was produced in the resulting "soup." The site also offers two video explanations of the original experiments by Stanley Miller.

2008-06-06

54

A Python Experiment Suite  

Digital Repository Infrastructure Vision for European Research (DRIVER)

We introduce the Python Experiment Suite, an open source software tool written in Python, that supports scientists, engineers and others to conduct automated generic software experiments on a larger scale with numerous features: parameter ranges and combinations can be evaluated automatically, where...

55

Particle physics experiments 1992  

International Nuclear Information System (INIS)

[en] The research programs described here were carried out in 1992 at Rutherford Appleton Laboratory and funded by the United Kingdom Science and Engineering Research Council. The area covered in these experiments is particle physics. Unedited contributions from over forty experimental programs are included. Experiments are listed according to their current status, the accelerator used and its years of operation. (UK)

1993-01-01

56

Computer Science Experiments  

CERN Multimedia

Computers are more prevalent in our daily lives than ever before, yet many people are unfamiliar with the concepts and technology of computer science. Offering 20 experiments and activities based on computer research, this book aims to expand students' learning experiences in this field by covering key science concepts.

Walker, Pamela

2010-01-01

57

Experiments with microwave sensors  

Science.gov (United States)

Recent European experience with microwave sensors is reviewed. Results using facilities of the Netherlands, France, Germany, and Denmark are examined. European initiatives using non-European sensors, including the work of the SURGE group, the Marine Remote Sensing Experiment, and the SAR 580 campaign are considered.

Krul, L.; de Loor, G. P.

1992-05-01

58

Earthquake Effects and Experiences  

Science.gov (United States)

This portion of the United States Geological Survey's (USGS) frequently-asked-questions feature on earthquakes addresses what individuals might actually experience during an earthquake. Topics include earthquake motion (rolling or shaking), earthquake effects (ground shaking, surface faulting, ground failure, etc.), earthquake magnitude, what an earthquake feels like, and others. There are also links to additional resources on earthquake effects and experiences.

2010-11-23

59

Stratospheric Balloon Experiments.  

Science.gov (United States)

Three stratospheric balloon-borne experiments were conducted at the Tenente Rodolfo Marsh and Comandante Ferraz Stations in the Antarctic region to study the x-ray and gamma ray atmospheric background. The first experiment was flown in January 1984 to mea...

U. B. Jayanthi J. Braga C. D. Pritsopoulo F. S. Blanco R. V. Correa

1986-01-01

60

Future Solar Neutrino Experiments  

Energy Technology Data Exchange (ETDEWEB)

The purpose of the future solar neutrino experiments is briefly reviewed. The future experimental programs which aim to measure the low energy solar neutrinos are described. We do not cover all the projects. Experiments using noble gases are promising for the pp-neutrino measurements.

Suzuki, Y. [Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Higashi-Mozumi, Kamioka-cho, Hida-city, 506-1205 (Japan)]. E-mail: suzuki@suketto.icrr.u-tokyo.ac.jp

2005-06-15

 
 
 
 
61

Experience with MODSIM II  

Energy Technology Data Exchange (ETDEWEB)

We present results of computer simulations for Data Acquisition systems for large fixed target experiments in an object oriented simulation language, MODSIM. This paper summarizes our experiences and presents preliminary results from the simulation already completed. We also indicate the resources required for this project.

Streets, J.; Berg, D.; Oleynik, G.; Pordes, R.; Slimmer, D.

1992-02-01

62

Experimenting at HERA  

Energy Technology Data Exchange (ETDEWEB)

In 1992 the ep-collider HERA at DESY, Hamburg, started operation for physics for the new detectors H1 and ZEUS. This note summarizes a report on the collider and the two experiments. HERA-B, the fourth approved experiment, is introduced. (author) 6 refs.

Koetz, U. [Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany). Hamburger Synchrotronstrahlungslabor

1995-12-31

63

Experimenting at HERA  

International Nuclear Information System (INIS)

In 1992 the ep-collider HERA at DESY, Hamburg, started operation for physics for the new detectors H1 and ZEUS. This note summarizes a report on the collider and the two experiments. HERA-B, the fourth approved experiment, is introduced. (author) 6 refs.

1995-01-01

64

Wind resuspension experiments  

International Nuclear Information System (INIS)

The effects of wind speed, particle size, and atmospheric stability on wind resuspension rates are being determined in three field experiments using both six-micrometer and submicrometer tracer particles. The effect of long-term weathering is also being determined as part of these experiments

1978-01-01

65

DNA dynamics - Experiment proposals  

International Nuclear Information System (INIS)

We argue that a breather wave, describing DNA dynamics, behaves like a real soliton. We rely on a Peyrard-Bishop-Dauxois (PBD) model. In addition, we propose a couple of experiments to confirm or reject this statement. These experiments should study solitonic interactions using micromanipulation technique. Also, we suggest how to measure a solitonic width and its amplitude.

2009-12-07

66

Radiochemical solar neutrino experiments  

International Nuclear Information System (INIS)

This review covers the three presently running radiochemical solar neutrino experiments, namely the Chlorine, SAGE, and GALLEX experiments. The focus of the review is on a discussion of statistical consistency checks of the available data. The chlorine radiochemical experiment is conceptually simple and shows no strong indication of any statistical anomalies. It still forms the basis of the solar neutrino problem. Each of the two gallium experiments show internal statistical consistency. SAGE's recent preliminary results are consistent with the published GALLEX results. If this convergence is confirmed by a more definitive analysis, this would suggest that the combined result of the two gallium experiments, SAGE and GALLEX, be used for comparisons with theoretical expectations. 5 refs., 15 figs.

1993-01-01

67

Undergraduate reactor control experiment  

International Nuclear Information System (INIS)

A sequence of reactor and related experiments has been a central element of a senior-level laboratory course at Pennsylvania State University (Penn State) for more than 20 yr. A new experiment has been developed where the students program and operate a computer controller that manipulates the speed of a secondary control rod to regulate TRIGA reactor power. Elementary feedback control theory is introduced to explain the experiment, which emphasizes the nonlinear aspect of reactor control where power level changes are equivalent to a change in control loop gain. Digital control of nuclear reactors has become more visible at Penn State with the replacement of the original analog-based TRIGA reactor control console with a modern computer-based digital control console. Several TRIGA reactor dynamics experiments, which comprise half of the three-credit laboratory course, lead to the control experiment finale: (a) digital simulation, (b) control rod calibration, (c) reactor pulsing, (d) reactivity oscillator, and (e) reactor noise

1992-01-01

68

Undergraduate reactor control experiment  

Energy Technology Data Exchange (ETDEWEB)

A sequence of reactor and related experiments has been a central element of a senior-level laboratory course at Pennsylvania State University (Penn State) for more than 20 yr. A new experiment has been developed where the students program and operate a computer controller that manipulates the speed of a secondary control rod to regulate TRIGA reactor power. Elementary feedback control theory is introduced to explain the experiment, which emphasizes the nonlinear aspect of reactor control where power level changes are equivalent to a change in control loop gain. Digital control of nuclear reactors has become more visible at Penn State with the replacement of the original analog-based TRIGA reactor control console with a modern computer-based digital control console. Several TRIGA reactor dynamics experiments, which comprise half of the three-credit laboratory course, lead to the control experiment finale: (a) digital simulation, (b) control rod calibration, (c) reactor pulsing, (d) reactivity oscillator, and (e) reactor noise.

Edwards, R.M.; Power, M.A.; Bryan, M. (Pennsylvania State Univ., University Park (United States))

1992-01-01

69

Molybdenum solar neutrino experiment  

International Nuclear Information System (INIS)

The goal of the molybdenum solar neutrino experiment is to deduce the 8B solar neutrino flux, averaged over the past several million years, from the concentration of 98Tc in a deeply buried molybdenum deposit. The experiment is important to an understanding of stellar processes because it will shed light on the reason for the discrepancy between theory and observation of the chlorine solar neutrino experiment. Possible reasons for the discrepancy may lie in the properties of neutrinos (neutrino oscillations or massive neutrinos) or in deficiencies of the standard solar model. The chlorine experiment only measures the 8B neutrino flux in current times and does not address possible temporal variations in the interior of the sun, which are also not considered in the standard model. In the molybdenum experiment, we plan to measure 98Tc (4.2 Myr), also produced by 8B neutrinos, and possibly 97Tc (2.6 Myr), produced by lower energy neutrinos.

1984-01-01

70

Cryogenics for LHC experiments  

CERN Multimedia

Cryogenic systems will be used by LHC experiments to maximize their performance. Institutes around the world are collaborating with CERN in the construction of these very low temperature systems. The cryogenic test facility in hall 180 for ATLAS magnets. High Energy Physics experiments have frequently adopted cryogenic versions of their apparatus to achieve optimal performance, and those for the LHC will be no exception. The two largest experiments for CERN's new flagship accelerator, ATLAS and CMS, will both use large superconducting magnets operated at 4.5 Kelvin - almost 270 degrees below the freezing point of water. ATLAS also includes calorimeters filled with liquid argon at 87 Kelvin. For the magnets, the choice of a cryogenic version was dictated by a combination economy and transparency to emerging particles. For the calorimeters, liquid argon was selected as the fluid best suited to the experiment's physics requirements. High Energy Physics experiments are the result of worldwide collaborations and...

2001-01-01

71

Simulation - modeling - experiment; Simulation - modelisation - experience  

Energy Technology Data Exchange (ETDEWEB)

After two workshops held in 2001 on the same topics, and in order to make a status of the advances in the domain of simulation and measurements, the main goals proposed for this workshop are: the presentation of the state-of-the-art of tools, methods and experiments in the domains of interest of the Gedepeon research group, the exchange of information about the possibilities of use of computer codes and facilities, about the understanding of physical and chemical phenomena, and about development and experiment needs. This document gathers 18 presentations (slides) among the 19 given at this workshop and dealing with: the deterministic and stochastic codes in reactor physics (Rimpault G.); MURE: an evolution code coupled with MCNP (Meplan O.); neutronic calculation of future reactors at EdF (Lecarpentier D.); advance status of the MCNP/TRIO-U neutronic/thermal-hydraulics coupling (Nuttin A.); the FLICA4/TRIPOLI4 thermal-hydraulics/neutronics coupling (Aniel S.); methods of disturbances and sensitivity analysis of nuclear data in reactor physics, application to VENUS-2 experimental reactor (Bidaud A.); modeling for the reliability improvement of an ADS accelerator (Biarotte J.L.); residual gas compensation of the space charge of intense beams (Ben Ismail A.); experimental determination and numerical modeling of phase equilibrium diagrams of interest in nuclear applications (Gachon J.C.); modeling of irradiation effects (Barbu A.); elastic limit and irradiation damage in Fe-Cr alloys: simulation and experiment (Pontikis V.); experimental measurements of spallation residues, comparison with Monte-Carlo simulation codes (Fallot M.); the spallation target-reactor coupling (Rimpault G.); tools and data (Grouiller J.P.); models in high energy transport codes: status and perspective (Leray S.); other ways of investigation for spallation (Audoin L.); neutrons and light particles production at intermediate energies (20-200 MeV) with iron, lead and uranium targets (Le Colley F.R.); nuclear data for transmutation (Noguere G.). (J.S.)

NONE

2004-07-01

72

Experiment Assistance Service; Service Soutien aux Experiences  

Energy Technology Data Exchange (ETDEWEB)

The mission of this service is the technical preparation and assistance afforded to experiments. The report presents activities related to the groups: CMS-ECAL, MANOIR, CIBLES, CFI, CMS-Trace, EI, CAS and BIAS. The Service`s personnel was implied in the following directions of activity: detectors, thin layers, cryogenics and vacuum, electronics, computer science, electromechanics, metrology, data acquisition, project follow-up, mechanical design, CAO 2D-3D etc. The paper describe also the interventions and realizations of certain projects

Bensalah, F.; Bouvier, R.; Duclot, J.C.; Giroux, J.; Hadjout, J.P.; Jacquin, M.; Kirsch, R.; Lambert, M.; Madjar, N.; Maurelli, G.; Morier, S.; Pastor, C.; Reynaud, M.; Sahuc, P.; Vagneron, L.; Vanzetto, S. [Inst. de Physique Nucleaire, Lyon-1 Univ., 69 - Villeurbanne (France)

1998-12-31

73

Radiochemical solar neutrino experiments  

International Nuclear Information System (INIS)

Radiochemical experiments have been crucial to solar neutrino research. Even today, they provide the only direct measurement of the rate of the proton-proton fusion reaction, p+p?d+e++?e, which generates most of the Sun's energy. We first give a little history of radiochemical solar neutrino experiments with emphasis on the gallium experiment SAGE - the only currently operating detector of this type. The combined result of all data from the Ga experiments is a capture rate of 67.6±3.7 SNU. For comparison to theory, we use the calculated flux at the Sun from a standard solar model, take into account neutrino propagation from the Sun to the Earth and the results of neutrino source experiments with Ga, and obtain 67.3-3.5+3.9 SNU. Using the data from all solar neutrino experiments we calculate an electron neutrino pp flux of ?pp?=(3.41-0.77+0.76)×1010/(cm2-s), which agrees well with the prediction from a detailed solar model of ?pp?=(3.30-0.14+0.13)×1010/(cm2-s). Four tests of the Ga experiments have been carried out with very intense reactor-produced neutrino sources and the ratio of observed to calculated rates is 0.88±0.05. One explanation for this unexpectedly low result is that the cross section for neutrino capture by the two lowest-lying excited states in 71Ge has been overestimated. We end with consideration of possible time variation in the Ga experiments and an enumeration of other possible radiochemical experiments that might have been.

2011-01-01

74

Neutrino experiments at accelerators  

Energy Technology Data Exchange (ETDEWEB)

Current neutrino experiments at accelerators, and recent results, are reviewed. Accelerator experiments are today investigating fundamental properties of the neutrinos and of the Standard Model. Neutrino masses are probed, through the oscillation phenomenon, in the domain of squared mass differences {Delta}m{sup 2} above 0.1 eV{sup 2}. Six experiments are currently producing results: CHORUS, DONUT, KARMEN, LSND, NOMAD and NUTEV. Their features are critically examined, and the neutrino oscillation result claimed by LSND is confronted of the new results from KARMEN.

Zucchelli, P. [Istituto Nazionale di Fisica Nucleare, Ferrara (Italy)

1998-12-31

75

Implosion heating experiment (IHX)  

International Nuclear Information System (INIS)

The Implosion Heating Experiment is a large diameter, high voltage linear theta pinch designed to study the implosion phase of conventional theta pinch heating under the condition of a steady driving magnetic field. The main objective of the experiment is to study the physics of the plasma implosion process, with an eye towards applications to the LASL theta pinch program; therefore the experiment is operated at filling densities appropriate to this program (approx.1015 cm-3). Another objective is to increase the amount of implosion heating over that typically achieved in past LASL theta pinches, that is to implode with a higher E/sub theta/

1975-07-28

76

Experiments on gravitation  

Energy Technology Data Exchange (ETDEWEB)

The theoretical setting of the experimental study of gravitation is indicated and a brief account is given of experiments on gravitation from Newton onwards. The main content of the review comprises surveys of three groups of experiment: the investigation of the inverse square law, studies of the weak equivalence principle and determinations of the constant of gravitation. Attention is called to the reasons for the difficulties of carrying out experiments on gravitation. In summary, it is concluded that there is no evidence for deviations from general relativity and that gravitation is mainly a manifestation of the geometry of spacetime.

Cook, A.

1988-05-01

77

A Friction Experiment  

Science.gov (United States)

Force-sensor friction experiments such as the one in Vernier Software's Physics with Computers depend on an object moving with constant velocity in order to measure the force of kinetic friction; when a block is pulled by a horizontal force sensor and the block moves along a horizontal surface with constant velocity, Newton's first law ensures that the force-sensor reading is a measure of the frictional force. The difficulty in performing the experiment is that it associates kinetic friction only with constant speeds. This experiment offers a way of avoiding this difficulty.

Takahashi, Leo

2002-09-01

78

Experiments with radioactivity  

International Nuclear Information System (INIS)

The booklet describing experiments with radioactivity includes the following chapters: (1) radiation alarm (2) What is radioactivity? (3) Radioactive decay (4) Half-time (5) Alpha decay (6) Beta decay (6) Gamma decay (8) Neutron radiation (9) Measurement of radioactive radiation (1) Radiation and living tissue (11) Safety measures (12) Radiation protection during experiments (13) Radioactive sources (14) Experiments with a cloud chamber (15) Construction of a Geiger counter (16) Transistor radiation detector (17) Scintillation counter (18) Geiger counter with glow lamp with external power supply (19) Geiger counter with glow lamp with battery power supply (20) Technical dictionary.

2012-01-01

79

Thermogravimetric experiments with titanium  

International Nuclear Information System (INIS)

[en] In the process of preparing for pyrophoricity experiments involving uranium, we conducted hydriding and air-exposure experiments on titanium. In these experiments the hydriding reactions and response to air-exposure was generally within the range expected based on work reported by others. One aberrant behavior was a sudden weight gain followed by a significant weight loss. We speculate that loss may be due to hydrogen evolution from the TiH2 resulting from local heating by oxidation reactions. We verified that titanium is not pyrophoric at temperatures less than 750 degree C. 18 refs. 1 fig

1991-01-01

80

Experience in plant operation  

Energy Technology Data Exchange (ETDEWEB)

Since the unit was commissioned almost one year's operating experience with individual components. Although the plant did not run without any problems in the initial operating phase, generally speaking expectations have been realized overall.

Moeller-Jensen, B.

1981-12-01

 
 
 
 
81

Recent experiments at LEGS  

International Nuclear Information System (INIS)

[en] Experiments have been carried out at LEGS to measure few-body nuclear reactions with polarized photons. The results are sensitive to multi-nucleon absorption amplitudes and final-state interactions. (author)

1992-11-25

82

Germany's Solar Experiment  

Science.gov (United States)

This NOVA video podcast is about Germany's solar experiment. Munich's solar panel farm lines the Autobahn and countryside in a massive effort to prove solar's feasibility as a practical renewable energy source.

Nova

83

The MINOS experiment  

Energy Technology Data Exchange (ETDEWEB)

The MINOS Experiment, a long-baseline neutrino oscillation search, is nearing completion of its far detector in the Soudan mine. The construction of the neutrino beam (the NuMI project) is progressing well.

Peterson, Earl A

2003-06-30

84

Experiment R701  

CERN Multimedia

Lower streamer chamber of experiment R701, showing its close fit around the central bicone vacuum chamber at intersection I-7. The upper streamer chamber has been removed but when in use is similarly fitted around the vacuum chamber.

1974-01-01

85

The world's biggest experiment  

CERN Multimedia

According to CERN, our understanding of the Universe is about the change. Meet the Imperial alumni and staff who are involved in CERN's Large Hadron Collider, the world's biggest experiment. (3 pages)

Gregson, Liz

2008-01-01

86

The AMS experiment  

International Nuclear Information System (INIS)

An overview about physics objectives of the AMS experiment, the sub-detectors of the Alpha Magnetic Spectrometer on the Shuttle flight in 1998 (AMS01) and some preliminary experimental results are presented

2001-01-01

87

Cosmic ray underground experiments  

Energy Technology Data Exchange (ETDEWEB)

The field of 'Underground Physics' has recently come into its own as a branch of 'Non-Accelerator-Particle Physics. 'The Kolar Gold Field experiments can be considered as a prime impetus in this direction. Collaboration in the K.G.F. between Tata Institute of Fundamental Research and Osaka City University started in 1960, taking advantage of the ideal conditions of the mine. A series of experiments have been carried out over the past 27 years to study many topic areas related to cosmic ray muons, neutrinos, as well as grand unification theories. An outline of past experiments is presented, and emphasis is placed on the continuation of present experiments for at least another 5 years to establish observable results of proton decay, neutron oscillation, prompt muons, 'Kolar Events' and muon bundles.

Miyake, Saburo

1988-08-01

88

Cosmic ray underground experiments  

International Nuclear Information System (INIS)

[en] The field of 'Underground Physics' has recently come into its own as a branch of 'Non-Accelerator-Particle Physics. 'The Kolar Gold Field experiments can be considered as a prime impetus in this direction. Collaboration in the K.G.F. between Tata Institute of Fundamental Research and Osaka City University started in 1960, taking advantage of the ideal conditions of the mine. A series of experiments have been carried out over the past 27 years to study many topic areas related to cosmic ray muons, neutrinos, as well as grand unification theories. An outline of past experiments is presented, and emphasis is placed on the continuation of present experiments for at least another 5 years to establish observable results of proton decay, neutron oscillation, prompt muons, 'Kolar Events' and muon bundles. (author)

1988-01-01

89

The OPERA experiment  

Energy Technology Data Exchange (ETDEWEB)

OPERA is a long baseline neutrino oscillation experiment running in appearance mode. It was built to unambiguously settle the atmospheric neutrino anomaly observing {nu}{sub {tau}} emerging from the CNGS {nu}{sub {mu}} beam. It is a hybrid emulsion/electronic apparatus currently installed in the Hall C of the underground Gran Sasso Laboratories. We discuss the main aspects of the experiment and provide some glimpse of the August 2006 run.

Sioli, Maximiliano [Dipartimento di Fisica dell' Universita di Bologna and INFN-Sezione di Bologna, V.le C. Berti Pichat 6/2, I-40127 Bologna (Italy)

2007-06-15

90

The GLUEX Experiment  

Energy Technology Data Exchange (ETDEWEB)

The GLUEX experiment, to be constructed in the new Hall D at Jefferson Lab as part of the 12 GeV upgrade, will utilize a linearly polarized 9 GeV photon beam, produced via coherent bremsstrahlung radiation off of a diamond wafer, incident on a proton target to conduct a search for exotic hybrid mesons. A summary of the physics motivation for the experiment and the key factors that drive the design of the detector and beam line is presented.

M.R. Shepherd

2009-12-01

91

Remote earth sensing experiments  

Energy Technology Data Exchange (ETDEWEB)

Description of data devices for deriving multi-spectral measuring television measurement data of middle and high resolution through use of second generation Meteor-type satellites. Options for developing a permanent and active remote sensing system in USSR are discussed. It is noted that the present experiment is an important step in that direction. Design and structural data for this particular device and its application in the experiment are covered.

Trifonov, Yu.V.

1981-01-01

92

The OPERA Experiment  

CERN Multimedia

OPERA(Oscillation Project with Emulsion-tRacking Apparatus) is a new detector concept, iron(lead)-emulsion for a long-baseline neutrino oscillation experiment. This experiment would perform an appearance search for nu_mu-nu_tau oscillation in the parameter region indicated by the atmospheric neutrino anomaly. OPERA can run at the Gran Sasso Laboratory in the proposed NGS (Neutrino to Gran Sasso) Beam from CERN.

Iovane, G

1998-01-01

93

The MAJORANA Experiment  

Energy Technology Data Exchange (ETDEWEB)

The Majorana collaboration is actively pursuing research and development aimed at a tonne-scale {sup 76}Ge neutrinoless double-beta decay ({beta}{beta}(0{nu})-decay) experiment. The current, primary focus is the construction of the Majorana Demonstrator experiment, an R and D effort that will field approximately 40 kg of germanium detectors with mixed enrichment levels. This article provides a status update on the construction of the Demonstrator.

Aguayo Navarrete, Estanislao; Avignone, F. T.; Back, Henning O.; Barabash, Alexander S.; Bergevin, M.; Bertrand, F.; Boswell, M.; Brudanin, V.; Busch, Matthew; Chan, Yuen-Dat; Christofferson, Cabot-Ann; Collar, J. I.; Combs, Dustin C.; Cooper, R. J.; Detwiler, Jason A.; Doe, Peter J.; Efremenko, Yuri; Egorov, Viatcheslav; Ejiri, H.; Elliott, Steven R.; Esterline, James H.; Fast, James E.; Fields, N.; Finnerty, P.; Fraenkle, Florian; Gehman, Victor M.; Giovanetti, G. K.; Green, Matthew P.; Guiseppe, Vincente; Gusey, K.; Hallin, A. L.; Hazama, R.; Henning, R.; Hime, Andrew; Hoppe, Eric W.; Horton, Mark; Howard, Stanley; Howe, M. A.; Johnson, R. A.; Keeter, K.; Keillor, Martin E.; Keller, C.; Kephart, Jeremy D.; Kidd, Mary; Knecht, A.; Kochetov, Oleg; Konovalov, S.; Kouzes, Richard T.; LaFerriere, Brian D.; LaRoque, B. H.; Leon, Jonathan D.; Leviner, L.; Loach, J. C.; MacMullin, S.; Marino, Michael G.; Martin, R. D.; Mei, Dong-Ming; Merriman, Jason H.; Miller, M. L.; Mizouni, Leila; Nomachi, Masaharu; Orrell, John L.; Overman, Nicole R.; Phillips, D.; Poon, Alan; Perumpilly, Gopakumar; Prior, Gersende; Radford, D. C.; Rielage, Keith; Robertson, R. G. H.; Ronquest, M. C.; Schubert, Alexis G.; Shima, T.; Shirchenko, M.; Snavely, Kyle J.; Sobolev, V.; Steele, David; Strain, J.; Thomas, K.; Timkin, V.; Tornow, W.; Vanyushin, I.; Varner, R. L.; Vetter, Kai; Vorren, Kris R.; Wilkerson, John; Wolfe, B. A.; Yakushev, E.; Young, A.; Yu, Chang-Hong; Yumatov, Vladimir; Zhang, C.

2011-10-01

94

The Majorana Experiment  

Science.gov (United States)

The Majorana collaboration is actively pursuing research and development aimed at a tonne-scale 76Ge neutrinoless double-beta decay (??(0?)-decay) experiment. The current, primary focus is the construction of the Majorana Demonstrator experiment, an R&D effort that will field approximately 40 kg of germanium detectors with mixed enrichment levels. This article provides a status update on the construction of the Demonstrator.

Aguayo, E.; Avignone, F. T.; Poon, A. W. P.; Perumpilly, G.; Prior, G.; Radford, D. C.; Rielage, K.; Robertson, R. G. H.; Ronquest, M. C.; Schubert, A. G.; Shima, T.; Shirchenko, M.; Snavely, K. J.; Sobolev, V.; Steele, D.; Strain, J.; Thomas, K.; Timkin, V.; Tornow, W.; Vanyushin, I.; Varner, R. L.; Vetter, K.; Vorren, K.; Wilkerson, J. F.; Wolfe, B. A.; Yakushev, E.; Young, A. R.; Yu, C.-H.; Yumatov, V.; Zhang, C.

2011-12-01

95

The MAJORANA Experiment  

International Nuclear Information System (INIS)

The Majorana collaboration is actively pursuing research and development aimed at a tonne-scale 76Ge neutrinoless double-beta decay (??(0?)-decay) experiment. The current, primary focus is the construction of the Majorana Demonstrator experiment, an R and D effort that will field approximately 40 kg of germanium detectors with mixed enrichment levels. This article provides a status update on the construction of the Demonstrator.

2011-01-01

96

The LHCb experiment  

CERN Multimedia

The LHCb experiment is designed to fully exploit the large number of b hadrons expected at the LHC energy and luminosity. The experiment is equipped with particle identification devices and can efficiently trigger events with different B-meson final states, allowing systematic studies of CP violation and other rare phenomena in the b hadron system with a high precision which could reveal physics beyond the Standard Model.

Nakada, Tatsuya

2000-01-01

97

Spacelab J experiment descriptions  

Energy Technology Data Exchange (ETDEWEB)

Brief descriptions of the experiment investigations for the Spacelab J Mission which was launched from the Kennedy Space Center aboard the Endeavour in Sept. 1992 are presented. Experiments cover the following: semiconductor crystals; single crystals; superconducting composite materials; crystal growth; bubble behavior in weightlessness; microgravity environment; health monitoring of Payload Specialists; cultured plant cells; effect of low gravity on calcium metabolism and bone formation; and circadian rhythm. Separate abstracts have been prepared for articles from this report.

Miller, T.Y.

1993-08-01

98

The LHCb experiment  

CERN Multimedia

The LHCb experiment is designed to fully exploit the large number of b hadrons expected at the LHC energy and luminosity. The experiment is equipped with particle identification devices and can efficiently trigger events with different B-meson final states, allowing systematic studies of CP violation and other rare phenomena in the b hadron system with a high precision which could reveal physics beyond the standard model.

Nakada, Tatsuya

2000-01-01

99

The COBRA experiment  

Energy Technology Data Exchange (ETDEWEB)

The COBRA experiment aims to use a large array of CdZnTe semiconductor detectors to search for neutrinoless double beta decay. The COBRA collaboration are currently operating a small proto-type array of crystals in a low-background environment. This paper presents the current status of the experiment, results from current and previous proto-types and future prospects for COBRA.

Wilson, J R [Department of Physics and Astronomy, University of Sussex, Brighton, BN1 9QH (United Kingdom)], E-mail: drjeannewilson@gmail.com

2008-07-15

100

The COBRA experiment  

International Nuclear Information System (INIS)

[en] The COBRA experiment aims to use a large array of CdZnTe semiconductor detectors to search for neutrinoless double beta decay. The COBRA collaboration are currently operating a small proto-type array of crystals in a low-background environment. This paper presents the current status of the experiment, results from current and previous proto-types and future prospects for COBRA

2008-01-01

 
 
 
 
101

The MAJORANA Experiment  

CERN Multimedia

The MAJORANA collaboration is actively pursuing research and development aimed at a tonne-scale 76Ge neutrinoless double-beta decay) experiment. The current, primary focus is the construction of the MAJORANA DEMONSTRATOR experiment, an R&D effort that will field approximately 40kg of germanium detectors with mixed enrichment levels. This article provides a status update on the construction of the DEMONSTRATOR.

,

2011-01-01

102

Particle physics experiments 1980  

International Nuclear Information System (INIS)

This report describes work carried out in 1980 on experiments approved by the Particle Physics Ezperiments Selection Panel. A table of contents giving, title and collaboration, technique, accelerator used, year of running, status as at December 1980, the spokesman and experimental code, is followed by unedited contributions from each of the 54 experiments included in this annual review including lists of submitted publications. (U.K.).

1981-01-01

103

Radiochemical solar neutrino experiments  

CERN Multimedia

Radiochemical experiments have been crucial to solar neutrino research. Even today, they provide the only direct measurement of the rate of the proton-proton fusion reaction, p + p --> d + e^+ + nu_e, which generates most of the Sun's energy. We first give a little history of radiochemical solar neutrino experiments with emphasis on the gallium experiment SAGE -- the only currently operating detector of this type. The combined result of all data from the Ga experiments is a capture rate of 67.6 +/- 3.7 SNU. For comparison to theory, we use the calculated flux at the Sun from a standard solar model, take into account neutrino propagation from the Sun to the Earth and the results of neutrino source experiments with Ga, and obtain 67.3 ^{+3.9}_{-3.5} SNU. Using the data from all solar neutrino experiments we calculate an electron neutrino pp flux at the earth of (3.41 ^{+0.76}_{-0.77}) x 10^{10}/(cm^2-s), which agrees well with the prediction from a detailed solar model of (3.30 ^{+0.13} _{-0.14}) x 10^{10}/(cm^...

Gavrin, V N

2007-01-01

104

Plasma Dynamo Experiments  

Science.gov (United States)

The Madison Plasma Dynamo Experiment (MPDX) is under construction to explore the self-excitation processes of a range of astrophysical dynamos. Numerical simulations of von K'arm'an flow have shown that a two-vortex flow can produce a dynamo when the magnetic Reynolds number is sufficiently high, which, for a plasma, requires a large, hot, flowing and unmagnetized plasma. This poster discusses experimental plans for von K'arm'an flow in MPDX as well as prototype experiments on the Plasma Couette Experiment (PCX). The PCX is a cylindrical plasma experiment currently being used to optimize a multi-cusp magnetic confinement scheme for experiments on the magnetorotational instability. It also provides a platform for prototyping two types of plasma sources (electron cyclotron heating and LaB6 cathode) as well as an ExB stirring mechanism, diagnostics, and future MPDX dynamo scenarios. This poster will review recent findings from PCX involving the fabrication and operation of a new LaB6 electron source and its use in driving Dean flow. While currently attainable densities (ne 10^17 m-3, using electron cyclotron heating) require Hall MHD in calculating the plasma response to various flow profiles, the new LaB6 electron source may allow high enough densities to place the plasma in a purely MHD regime. Work supported by NSF.

Weisberg, David; Collins, Cami; Katz, Noam; Wallace, John; Khalzov, Ivan; Jara-Almonte, Jonathan; Forest, Cary

2011-11-01

105

Commercial Experiment Transporter: COMET  

Energy Technology Data Exchange (ETDEWEB)

A launch system consisting of ground-support equipment, a four-stage rocket, a service module, a recovery system and a recovery site, and an orbital operations center is being assembled. The system is designed to launch 818 kg (1800 lb) to a 552-km (300-n.mi.) low earth orbit at a 40-deg inclination. Experiment space exists in both the service module and the recovery system. The service module provides space for 68 kg (150 lb) of experiments plus telemetry services, attitude control, and power and uses no consumables to maintain attitude. Consequently, the service module can maintain orbit attitude for years. Power of 400 W is supplied by solar cells and batteries for both experiment operation and housekeeping. The recovery system houses an experiment carrier for 136 kg (300 lb) of experiments, a retro rocket, a heat shield, and a parachute. An orbital operations control center provides tracking, telemetry, and commanding for the satellite. The payloads are also briefly described. The first launch was scheduled for 1995.

Wessling, F.C.; Robinson, M.; Martinez, R.S.; Gallimore, T.; Combs, N. [Univ. of Alabama, Huntsville, AL (United States)

1994-09-01

106

Structure of aesthetic experience  

Directory of Open Access Journals (Sweden)

Full Text Available This study investigated the strructure of aesthetic experience and the relationship of this structure and other dimensions of the subjective judgements of paintings. Aesthetic experinece was defined by nine descriptors selected from relevant literature: fascinating, irresistible, unique, eternal, profound, exceptional, universal, unspeakable, I would like to have this painting. 24 paintings were judged of on nine unipolar seven-step scales that were made of the up-mentioned descriptors. The factor analysis extracted one principal component. Multiple regression has shown weak correlation between aesthetic expirience (averaged nine judgements) and the factors of the subjective judgements of paintings (the factors were measured by the instrument SDS 16; Radonji? & Markovi?, 2005). Factor Arousal was a significant predictor of aesthetic experience, but the percent of explained variance was relatively low (circa 23%). The prediction of other factors, Regularity, Atraction and Serenity, was not significant. For the purpose of this analysis we used the data from the previous study (Radonji? and Markovi?, 2005). Further regression analyses indicated the role of aesthetic experience in the similarity judgments of paintings: the distributions of the paintings within 2-D and 3-D MDS space were partially explained by the measure of aesthetic experience. The MDS data were taken from the previous study (Radonji? i Markovi?, 2004). The results of this study suggest that the aesthetic experience is a unique and relatively independent phenomenon: internally, it is not dividable into components, and externally, it is weakly correlated with the other subjective dimensions.

Polovina Marko; Markovi? Slobodan

2006-01-01

107

Future Reactor Experiments  

CERN Document Server

The measurement of the neutrino mixing angle $\\theta_{13}$ opens a gateway for the next generation experiments to measure the neutrino mass hierarchy and the leptonic CP-violating phase. Future reactor experiments will focus on mass hierarchy determination and the precision measurement of mixing parameters. Mass hierarchy can be determined from the disappearance of reactor electron antineutrinos based on the interference effect of two separated oscillation modes. Relative and absolute measurement techniques have been explored. A proposed experiment JUNO, with a 20 kton liquid scintillator detector of $3%/$$\\sqrt{E(MeV)}$ energy resolution, $\\sim$ 53 km far from reactors of $\\sim$ 36 GW total thermal power, can reach to a sensitivity of $\\Delta\\chi^{2}>16$ considering the spread of reactor cores and uncertainties of the detector response. Three of mixing parameters are expected to be measured to better than 1% precision. There are multiple detector options for JUNO under investigation. The technical challenges...

He, Miao

2013-01-01

108

Operating experience feedback  

International Nuclear Information System (INIS)

Slovenian Nuclear Safety Administration (SNSA) has developed its own system for tracking, screening and evaluating the operating experiences of the nuclear installations. The SNSA staff regularly tracks the operating experiences throughout the world and screens them on the bases of applicability for the Slovenian nuclear facilities. The operating experiences, which pass the screening, are thoroughly evaluated and also recent operational events in these facilities are taken into account. If needed, more information is gathered to evaluate the conditions of the Slovenian facilities and appropriate corrective actions are considered. The result might be the identification of the need for modification at the licensee, the need for modification of internal procedures in the SNSA or even the proposal for the modification of regulations. Information system helps everybody to track the process of evaluation and proper logging of activities. (author)

2007-01-01

109

The POLARBEAR Experiment  

CERN Multimedia

We present the design and characterization of the POLARBEAR experiment. POLARBEAR will measure the polarization of the cosmic microwave background (CMB) on angular scales ranging from the experiment's 3.5 arcminute beam size to several degrees. The experiment utilizes a unique focal plane of 1,274 antenna-coupled, polarization sensitive TES bolometers cooled to 250 milliKelvin. Employing this focal plane along with stringent control over systematic errors, POLARBEAR has the sensitivity to detect the expected small scale B-mode signal due to gravitational lensing and search for the large scale B-mode signal from inflationary gravitational waves. POLARBEAR was assembled for an engineering run in the Inyo Mountains of California in 2010 and was deployed in late 2011 to the Atacama Desert in Chile. An overview of the instrument is presented along with characterization results from observations in Chile.

Kermish, Z; Anthony, A; Arnold, K; Arnold, K; Barron, D; Boettger, D; Borrill, J; Chapman, S; Chinone, Y; Dobbs, M A; Errard, J; Fabbian, G; Flanigan, D; Fuller, G; Ghribi, A; Grainger, W; Halverson, N; Hasegawa, M; Hattori, K; Hazumi, M; Holzapfel, W L; Howard, J; Hyland, P; Jaffe, A; Keating, B; Kisner, T; Lee, A T; Jeune, M Le; Linder, E; Lungu, M; Matsuda, F; Matsumura, T; Meng, X; Miller, N J; Morii, H; Moyerman, S; Myers, M J; Nishino, H; Paar, H; Quealy, E; Reichardt, C L; Richards, P L; Ross, C; Shimizu, A; Shimon, M; Shimmin, C; Sholl, M; Siritanasak, P; Spieler, H; Stebor, N; Steinbach, B; Stompor, R; Suzuki, A; Tomaru, T; Tucker, C; Zahn, O

2012-01-01

110

The OPERA experiment  

International Nuclear Information System (INIS)

The OPERA experiment is a long baseline experiment designed to be the conclusive test of the ????? oscillation hypothesis by means of the direct observation of ?? in an initially pure ?? beam. The detector is located at the underground Gran Sasso laboratory, 730 km from CERN, on the CNGS neutrino beam and consists of a lead/emulsion film target complemented by electronic detectors. The physics motivations and the experimental technique will be reviewed. A summary of the performances will be given and the first sample of CNGS neutrino events, collected in August 2006, will be presented and discussed.

2007-01-01

111

The OPERA experiment  

International Nuclear Information System (INIS)

The OPERA (oscillation project with emulsion-tracking apparatus) experiment aims to observe an unambiguous ?? ? ?? oscillation in the parameter region allowed by previous experiments. The OPERA detector will be installed in the underground Gran Sasso Laboratory, 732 km away from CERN, where the CNGS (CERN neutrino beam to Gran Sasso) ?? beam will be produced. The signature of the presence of ??'s in the ?? beam will be the detection of ? leptons produced by ?? interactions. Nuclear emulsions will be used for precise event reconstruction, while electronic detectors will be used for triggering.

2004-01-01

112

The Opera experiment  

International Nuclear Information System (INIS)

Opera is a long baseline neutrino experiment, designed to search for ?? ? ?? oscillation through the direct observation of ?? in the almost pure CNGS ?? beam produced at CERN and detected at LNGS, the large underground Gran Sasso National Laboratory 732 Km away from CERN. The detector construction was completed at the beginning of 2008 and the data taking started in Summer 2008. In five years of data taking, the experiment is expected to collect about 10 to 15 ?? interactions. We discuss the performance of the detector, the event analysis flow and the physics potential as well as the preliminary results obtained in the 2008 run.

2009-01-01

113

The OPERA experiment  

International Nuclear Information System (INIS)

The OPERA (Oscillation Project with Emulsion-tRacking Apparatus) experiment aims to observe an ?? ? ?? oscillation in the parameter region allowed by previous experiments. The OPERA detector will be installed in the underground Gran Sasso Laboratory, where the CNGS (CERN Neutrino beam to Gran Sasso) ?? beam will be produced. The signature of the presence of ??'s in the ?? beam will be detection of ? leptons produced by ?? interactions. Nuclear emulsions will be used for precise event reconstruction, while electronic detectors will be used for triggering

2004-01-01

114

The OPERA experiment  

International Nuclear Information System (INIS)

The aim of the OPERA experiment is to provide unambiguous evidence for the ?? ? ?? oscillation by looking at the appearance of ?? in a pure ?? beam. This oscillation will be sought in the region of the oscillation parameters indicated by the atmospheric neutrino results. The experiment is part of the CNGS (CERN Neutrino beam to Gran Sasso) project. The ?? beam produced at CERN will be sent towards the Gran Sasso underground laboratory, where the OPERA detector is under construction. The detector, the physics potential, and performance for neutrino oscillation studies including the subleading ?? ? ?? search are presented.

2006-01-01

115

Laser fusion experiment  

Energy Technology Data Exchange (ETDEWEB)

The recent progress of laser fusion research has been remarkable in obtaining the high density of more than 100 times solid density and high temperature plasma producing thermonuclear neutrons of 10{sup 13} per shot (pellet gain of 0.2%) and in the understanding of the implosion physics. The data bases of the laser fusion are rapidly being accumulated and the technologies for the advanced experiments have been developed, both of which enable progress toward the fusion ignition experiment and the achievement of the breakeven conditions. (author).

Nakai, S. (Osaka Univ., Suita (Japan). Inst. of Laser Engineering)

1989-08-01

116

The OPERA experiment  

CERN Multimedia

Following the Super-Kamiokande findings on atmospheric neutrinos, accelerator neutrinos have started to be exploited to confirm the indication for neutrino oscillations and perform more complete measurements of the mass differences and mixing parameters. In Europe, the long baseline beam CERN Neutrino to Gran Sasso CNGS is aimed at direct appearance searches of nu /sub mu / to nu /sub tau /. The OPERA experiment in Gran sasso will use photographic emulsions in a large hybrid detector to point at nu , interactions coming from the CNGS beam in a "zero background" approach. The principles of the experiment and its projected performances are described. (12 refs).

Pessard, H

2001-01-01

117

Steam generator tube experience  

International Nuclear Information System (INIS)

[en] This report provides information pertaining to the status of PWR steam generator tube experience and the resolution of unresolved safety issues A-3, A-4, and A-5 regarding steam generator tube integrity. It provides an overview of the types of problems which have occurred in PWR steam generators with particular emphasis on recent operating experience. The report also discusses short- and long-term corrective actions being pursued by the industry to resolve these problems, steam generator inspection and repair requirements which have been established to ensure the continued safe operation of PWR steam generators, and occupational radiation exposures associated with the above-listed activities

1982-01-01

118

Experiments with ? hypernuclei  

International Nuclear Information System (INIS)

Recent observations of hypernuclear bound states in experiments at the Brookhaven National Laboratory Alternate Gradient Synchrotron are described. Gamma rays from hypernuclei have been observed in coincidence with a (K-,?-) energy difference spectrum. The energy resolution and purity of the (K-,?-) spectrum demonstrates the hypernuclear origin of the gamma rays. The case of /sub ?/7Li is discussed in detail as it represents the first successful application of the technique. Experiments of this kind can benefit greatly from the increased kaon beam intensity that will be available at LAMPF II

1982-07-22

119

Microwave PASER Experiment  

International Nuclear Information System (INIS)

The PASER (Particle Acceleration by Stimulated Emission of Radiation) concept for particle acceleration entails the direct transfer of energy from an active medium to a charged particle beam. The PASER was originally formulated for optical (laser) media; we are planning a PASER demonstration experiment based on an optically pumped X-band paramagnetic medium consisting of porphyrin or fullerene (C60) derivatives in a toluene solution or polystyrene matrix. We discuss the background of this project and report on the status of the experiment to measure the acceleration of electrons using the microwave PASER.

2009-01-22

120

The VIP Experiment  

International Nuclear Information System (INIS)

[en] The Pauli Exclusion Principle (PEP) is a basic principle of Quantum Mechanics, and its validity has never been seriously challenged. However, given its importance, it is very important to check it as thoroughly as possible. Here we describe the VIP (Violation of PEP) experiment, an improved version of the Ramberg and Snow experiment (Ramberg and Snow, Phys. Lett. B238 (1990) 438); VIP shall be performed at the Gran Sasso underground laboratories, and aims to test the Pauli Exclusion Principle for electrons with unprecedented accuracy, down to ?2/2 ? 10-30

2006-01-04

 
 
 
 
121

The VIP Experiment  

Science.gov (United States)

The Pauli Exclusion Principle (PEP) is a basic principle of Quantum Mechanics, and its validity has never been seriously challenged. However, given its importance, it is very important to check it as thoroughly as possible. Here we describe the VIP (Violation of PEP) experiment, an improved version of the Ramberg and Snow experiment (Ramberg and Snow, Phys. Lett. B238 (1990) 438) VIP shall be performed at the Gran Sasso underground laboratories, and aims to test the Pauli Exclusion Principle for electrons with unprecedented accuracy, down to ?2/2 ~ 10-30.

Bartalucci, S.; Bertolucci, S.; Bragadireanu, M.; Bucci, C.; Cargnelli, M.; Catitti, M.; Curceanu (Petrascu), C.; di Matteo, S.; Egger, J.-P.; Ferrari, N.; Fuhrmann, H.; Guaraldo, C.; Iliescu, M.; Ishiwatari, T.; Laubenstein, M.; Marton, J.; Milotti, E.; Pietreanu, D.; Ponta, T.; Sirghi, D.; Sirghi, F.; Sperandio, L.; Widmann, E.; Zmeskal, J.

2006-01-01

122

Photon mass experiment  

Energy Technology Data Exchange (ETDEWEB)

A Coulomb null experiment is described that enables physics students to obtain rigorous upper bounds on photon mass. The experimenter searches for subnanovolt signals that would escape a closed shell were photon mass to be positive. The approach can be adapted for several college levels. At the simplest level, a ''miniature'' low-cost experiment allows a student to verify the exponent ''-2'' in Coulomb's law to eight or more decimal places. An advanced student given a full-size apparatus (at greater cost) can obtain mass bounds very close to the established laboratory limit.

Crandall, R.E.

1983-08-01

123

Experiences with biosynthetic dressings.  

UK PubMed Central (United Kingdom)

Almost all documented clinical experience shows that occlusively dressed wounds heal more quickly and with less pain, tenderness, and swelling than undressed wounds. Clinical experience with occlusive skin dressings on acute and chronic wounds, on diseased skin, and on normal skin is reviewed. This report presents the effects of some of the newest oxygen-permeable and oxygen-nonpermeable occlusive dressings: three polyurethane adhesive films (Bioclusive, Op-Site, and Tegaderm), a polyethylene oxide hydrogel dressing (Vigilon), and a hydroactive polymer dressing (DuoDerm).

Eaglstein WH

1985-02-01

124

Experiences with biosynthetic dressings.  

Science.gov (United States)

Almost all documented clinical experience shows that occlusively dressed wounds heal more quickly and with less pain, tenderness, and swelling than undressed wounds. Clinical experience with occlusive skin dressings on acute and chronic wounds, on diseased skin, and on normal skin is reviewed. This report presents the effects of some of the newest oxygen-permeable and oxygen-nonpermeable occlusive dressings: three polyurethane adhesive films (Bioclusive, Op-Site, and Tegaderm), a polyethylene oxide hydrogel dressing (Vigilon), and a hydroactive polymer dressing (DuoDerm). PMID:3973143

Eaglstein, W H

1985-02-01

125

Experiment@Portugal  

Directory of Open Access Journals (Sweden)

Full Text Available The main goal of the Project Experiment@Portugal is to produce a complete survey of Portuguese developments in remote and virtual labs. This knowledge will provide the conditions for joining forces in order to organize a well structured national website integrating a database of available remote and virtual experiments, categorized for sharing purposes, and looking for delivering valuable contents for high schools and for higher education. It is expected that the final result will bring up a solid team able to offer in this domain a Portuguese partner at international level

Maria Teresa Restivo; Jose Carlos Alves; Alberto Cardoso

2011-01-01

126

Nucleon decay experiments  

International Nuclear Information System (INIS)

[en] As can be seen three experiments have recently either been reconstructed (KOLAR II) or significantly been improved (KAMIOKANDE II, IMB III). The total useful luminosity of the five experiments adds up to ?6,5 kty1, that is ?4x1633 nucleons (proton + neutrons) have been looked at for one year. From this year on KOLAR, IMB and Kamiokande are much improved and add luminosity at better sensitivity for some of the potential nucleon decay modes and in general with better background rejection. (orig./BBOE)

1986-01-01

127

Overview of ECRH experiments  

International Nuclear Information System (INIS)

A review of the present status of electron cyclotron heating and current drive experiments in toroidal fusion devices is presented. In addition to basic heating and current drive studies the review also addresses advances in wave physics and the application of electron cyclotron waves for instability control, transport studies, pre-ionisation/start-up assist, etc. A comprehensive over-view is given with particular emphasis on recent advances since the major review of Erckmann and Gasparino 1994, including results from the latest generation of high power, high frequency experiments. (author)

1998-01-01

128

AGS experiments: 1985, 1986, 1987  

International Nuclear Information System (INIS)

This report contains: Experimental areas layout, table of beam parameters and fluxes, experiment schedule ''as run,'' experiment long range schedule, a listing of experiments by number, two-page summaries of each experiment, also ordered by number, and publications of AGS experiments, 1982-1987

1987-01-01

129

AGS experiments, 1988, 1989, 1990  

International Nuclear Information System (INIS)

[en] This report contains: experimental areas layout; table of beam parameters and fluxes; experiment schedule ''as run''; experiment long range schedule; a listing of experiments by number; two-page summaries of each experiment begin here, also ordered by number; publications of AGS experiments; and list of experimenters

1991-01-01

130

Experiments with SIRa; Experiences avec SIRa  

Energy Technology Data Exchange (ETDEWEB)

To generate radioactive ion beams two techniques are generally used. One which is currently in use at GANIL consists in the projectile fragmentation in a thin target followed by a separation in a spectrometer (of LISE or SISSI type) and alpha spectrometry. The second method, named ISOL (Isotope Separator On-Line), briefly described in this report, is at present studied on the testing benchmark SIRa (Separateur d`Ion Radioactifs) having in view its future utilisation with SPIRaL (Source de Production d`Ions Radioactifs en Ligne).A beam of slightly accelerated ions is stopped in a thick target of hot carbon. The atoms produced in the target surface are subsequently diffused through a transfer tube up to a ECR source plasma where they are ionised and then accelerated. The originality of the GANIL project resides in the utilization of a largely extended range of heavy ions. To obtain different radioactive nuclei it is sufficient to change the incident beam and that permits the permanent utilisation of a robust carbon target. The experiments currently performed on SIRa consists in measuring the amount of different nuclei produced, aiming at optimization of the production of radioactive ions. This production depends essentially on the efficiency of the transfer from target to the ECR source, on the ionisation efficiency of this source and the efficiency of the SIRa separator. Different target-source configurations were tested. Also, a new assembly, NANOGAN II, was tested as the first to the deliver a beam for SPIRaL 2 refs.

Angelique, J.C.; Orr, N.A. [Lab. de Physique Corpusculaire, Caen Univ., 14 (France); Collaboration: Bruyeres-le-Chatel, CENBG-Bordeaux, CSNSM-Orsay, GANIL-Caen, IPN-Orsay

1997-12-31

131

The OPERA experiment  

International Nuclear Information System (INIS)

The aim of the OPERA experiment is to provide an unambiguous evidence for the ?? ? ?? oscillation by looking at the appearance of ?? in a pure ??. The ?? beam produced at CERN will be sent towards the Gran Sasso underground laboratory, where OPERA detector is under construction. The detector, the physics potential and performances for neutrino oscillation studies are presented

2006-01-01

132

The ATRAP experiment  

CERN Multimedia

Gerald Gabrielse, spokesperson, pictured in front of the Antihydrogen Trap (ATRAP) experiment, the first machine to accumulate cold antiprotons produced in the AD, and combine them with protons (antielectrons) to form antihydrogen. The study of antihydrogen in comparison with hydrogen will hopefully provide insight into the differences between matter and antimatter, especially in comparing their mass and spectra.

Laurent Guiraud

2000-01-01

133

[The AMY experiment  

International Nuclear Information System (INIS)

The AMY experiment is one of three major experiments at TRISTAN which is studying the states the matter produced in electron positron annihilations in the center of mass energy range of 50--65GeV. It provides information between the lower energy facilities such as PEP and PETRA and the new facilities SLC and LEP which are designed to operate in the region of the Z0 mass near 90GeV. In the region of the AMY experiment, interaction cross sections are near their minimum of about 100pb, making it difficult to acquire large data samples during typical running cycles. This last year has seen an accumulation of about 10---12pb-1 of integrated luminosity in the energy range from 58 to 61.7GeV. Despite this limited data sample, the AMY experiment has been extremely active in attempting to extract the minimum amount of information from the data. Some of the most significant results are discussed in this paper. 9 refs

1989-01-01

134

The MAJORANA Experiment  

Energy Technology Data Exchange (ETDEWEB)

The Majorana Collaboration is assembling an array of HPGe detectors to search for neutrinoless double-beta decay in {sup 76}Ge. Initially, Majorana aims to construct a prototype module to demonstrate the potential of a future 1-tonne experiment. The design and potential reach of this prototype Demonstrator module are presented.

Guiseppe, V.E. [Univ S Dakota; Keller, C. [Univ S Dakota; Mei, D-M [Univ S Dakota; Perevozchikov, O. [Univ S Dakota; Perumpilly, G. [Univ S Dakota; Thomas, K. [Univ S Dakota; Xiang, W. [Univ S Dakota; Zhang, C. [Univ S Dakota; Aalseth, C.E. [Pacific NW Natl Lab Richland, WA; Aguayo, E. [Pacific NW Natl Lab Richland, WA; Ely, J. [Pacific NW Natl Lab Richland, WA; Fast, J.E. [Pacific NW Natl Lab Richland, WA; Hoppe, E.W. [Pacific NW Natl Lab Richland, WA; Hossbach, T.W. [Pacific NW Natl Lab Richland, WA; Keillor, M. [Pacific NW Natl Lab Richland, WA; Kephart, J.D. [Pacific NW Natl Lab Richland, WA; Kouzes, R. [Pacific NW Natl Lab Richland, WA; Miley, H.S. [Pacific NW Natl Lab Richland, WA; Mizouni, L. [Pacific NW Natl Lab Richland, WA; Myers, A.W. [Pacific NW Natl Lab Richland, WA; Reid, D. [Pacific NW Natl Lab Richland, WA; Amman, M. [Lawrence Berkeley National Laboratory (LBNL); Bergevin, M. [Lawrence Berkeley National Laboratory (LBNL); Chan, Y-D [Lawrence Berkeley National Laboratory (LBNL); Detwiler, J.A. [Lawrence Berkeley National Laboratory (LBNL); Loach, J.C. [Lawrence Berkeley National Laboratory (LBNL); Luke, P.N. [Lawrence Berkeley National Laboratory (LBNL); Martin, R.D. [Lawrence Berkeley National Laboratory (LBNL); Poon, A.W.P. [Lawrence Berkeley National Laboratory (LBNL); Prior, G. [Lawrence Berkeley National Laboratory (LBNL); Vetter, K. [Lawrence Berkeley National Laboratory (LBNL); Yaver, H. [Lawrence Berkeley National Laboratory (LBNL); Avignone, F.T. III [University of South Carolina; Creswick, R. [University of South Carolina; Farach, H. [University of South Carolina; Mizouni, L. [University of South Carolina; Avignone, Frank Titus [ORNL; Bertrand Jr, Fred E [ORNL; Capps, Gregory L [ORNL; Cooper, Reynold J [ORNL; Radford, David C [ORNL; Varner Jr, Robert L [ORNL; Wilkerson, John F [University of North Carolina, Chapel Hill; Yu, Chang-Hong [ORNL; Back, H.O. [University of North Carolina; Leviner, L. [North Carolina State University; Young, A.R. [North Carolina State University; Back (et al.), H.O. [Triangle Universities Nuclear Laboratory, Durham, NC; Bai, X. [South Dakota School of Mines and Technology; Hong, H. [South Dakota School of Mines and Technology; Howard, S. [South Dakota School of Mines and Technology; Medlin, D. [South Dakota School of Mines and Technology; Sobolev, V. [South Dakota School of Mines and Technology; Barabash, A.S. [Inst Theort & Expt Phys, Moscow, Russia; Konovalov, S.I. [Inst Theort & Expt Phys, Moscow, Russia; Vanyushin, I. [Inst Theort & Expt Phys, Moscow, Russia; Yumatov, V. [Inst Theort & Expt Phys, Moscow, Russia; Barbeau, P.S. [University of Chicago; Collar, J.I. [University of Chicago; Fields, N. [University of Chicago; Boswell (et al.), M. [Los Alamos National Laboratory (LANL); Brudanin, V. [Joint Institute for Nuclear Research, Dubna, Russia; Egorov, V. [Joint Institute for Nuclear Research, Dubna, Russia; Gusey, K. [Joint Institute for Nuclear Research, Dubna, Russia; Kochetov, O. [Joint Institute for Nuclear Research, Dubna, Russia; Shirchenko, M. [Joint Institute for Nuclear Research, Dubna, Russia; Timkin, V. [Joint Institute for Nuclear Research, Dubna, Russia; Yakushev, E. [Joint Institute for Nuclear Research, Dubna, Russia; Bugg, W. [University of Tennessee, Knoxville (UTK); Efremenko, M. [University of Tennessee, Knoxville (UTK); Burritt (et al.), T.H. [University of Washington, Ctr Expt Nucle Phys & Astrophys; Burritt (et al.), T.H. [University of Washington, Dept Phys, Seattle, WA; Busch, M. [Duke University; Esterline, J. [Duke University; Swift, G. [Duke University; Tornow, W. [Duke University/TUNL; Ejiri, H. [Osaka University; Hazama, R. [Osaka University; Nomachi, M. [Osaka University; Shima, T. [Osaka University; Finnerty (et al.), P. [University of North Carolina; et al.

2011-01-01

135

Vapour suppression pool experiments  

International Nuclear Information System (INIS)

A report on the experiments on vapour suppression pool system for Narora Atomic Power Project is presented. The efficiency of the suppression pool in cooling the hot air passing through it and the pressure and temperature transients following a continuous flow of air -steam mixture from VI to V2 were investigated. (M.G.B.)

1975-01-01

136

The Doppler Pendulum Experiment  

Science.gov (United States)

An experiment to verify the Doppler effect of sound waves is described. An ultrasonic source is mounted at the end of a simple pendulum. As the pendulum swings, the rapid change of frequency can be recorded by a stationary receiver using a simple frequency-to-voltage converter. The experimental results are in close agreement with the Doppler…

Lee, C. K.; Wong, H. K.

2011-01-01

137

The Majorana Experiment  

Energy Technology Data Exchange (ETDEWEB)

The Majorana Collaboration is assembling an array of HPGe detectors to search for neutrinoless double-beta decay in 76Ge. Initially, Majorana aims to construct a prototype module to demonstrate the potential of a future 1-tonne experiment. The design and potential reach of this prototype Demonstrator module are presented.

Aalseth, Craig E.; Aguayo Navarrete, Estanislao; Amman, M.; Avignone, F. T.; Back, Henning O.; Bai, Xinhua; Barabash, Alexander S.; Barbeau, P. S.; Bergevin, M.; Bertrand, F.; Boswell, M.; Brudanin, V.; Bugg, William; Burritt, Tom H.; Busch, Matthew; Capps, Greg L.; Chan, Yuen-Dat; Collar, J. I.; Cooper, R. J.; Creswick, R.; Detwiler, Jason A.; Diaz, J.; Doe, Peter J.; Efremenko, Yuri; Egorov, Viatcheslav; Ejiri, H.; Elliott, S. R.; Ely, James H.; Esterline, James H.; Farach, H. A.; Fast, James E.; Fields, N.; Finnerty, P.; Fraenkle, Florian; Gehman, Victor M.; Giovanetti, G. K.; Green, M.; Guiseppe, Vincente; Gusey, K.; Hallin, A. L.; Harper, Gregory; Hazama, R.; Henning, Reyco; Hime, Andrew; Hong, H.; Hoppe, Eric W.; Hossbach, Todd W.; Howard, Stanley; Howe, M. A.; Johnson, R. A.; Keeter, K.; Keillor, Martin E.; Keller, C.; Kephart, Jeremy D.; Kidd, M. F.; Knecht, A.; Kochetov, Oleg; Konovalov, S.; Kouzes, Richard T.; LaRoque, B. H.; Leviner, L.; Loach, J. C.; Luke, P.; MacMullin, S.; Marino, Michael G.; Martin, R. D.; Medlin, D.; Mei, Dong-Ming; Miley, Harry S.; Miller, M. L.; Mizouni, Leila; Myers, Allan W.; Nomachi, Masaharu; Orrell, John L.; Peterson, David; Phillips, D.; Poon, Alan; Perevozchikov, O.; Perumpilly, Gopakumar; Prior, Gersende; Radford, D. C.; Reid, Douglas J.; Rielage, Keith; Robertson, R. G. H.; Rodriguez, Larry; Ronquest, M. C.; Salazar, Harold; Schubert, Alexis G.; Shima, T.; Shirchenko, M.; Sobolev, V.; Steele, David; Strain, J.; Swift, Gary; Thomas, K.; Timkin, V.; Tornow, W.; Van Wechel, T. D.; Vanyushin, I.; Varner, R. L.; Vetter, Kai; Vorren, Kris R.; Wilkerson, J. F.; Wolfe, B. A.; Xiang, W.; Yakushev, E.; Yaver, Harold; Young, A.; Yu, Chang-Hong; Yumatov, V.; Zhang, C.

2011-08-01

138

Chlorine solar neutrino experiment  

International Nuclear Information System (INIS)

The chlorine solar neutrino experiment in the Homestake Gold Mine is described and the results obtained with the chlorine detector over the last fourteen years are summarized and discussed. Background processes producing 37Ar and the question of the constancy of the production rate of 37Ar are given special emphasis.

1984-01-01

139

Electronics for LHC Experiments  

International Nuclear Information System (INIS)

This document gathers the abstracts of most presentations made at this workshop on electronics for the large hadron collider (LHC) experiments. The presentations were arranged into 6 sessions: 1) electronics for tracker, 2) trigger electronics, 3) detector control systems, 4) data acquisition, 5) electronics for calorimeters and electronics for muons, and 6) links, power systems, grounding and shielding, testing and quality assurance

2004-01-01

140

Hydro control experience  

Energy Technology Data Exchange (ETDEWEB)

Over the last decade, computer systems have become more widespread in the area of hydro power station control. Although this has been a big step towards improved control and operability, the next move is to realise the importance of the operator and use his experience to develop the systems still further. (author).

Horneman, Svante (ABB Generation (SE))

1990-07-01

 
 
 
 
141

Enhance Your Twitter Experience  

Science.gov (United States)

The author has been encouraging teachers, students, and others to join Twitter and build their personal learning networks (PLNs) ever since she delved into this great social networking site. In this article, she offers a few other tools and tips that can improve the Twitter experience of those who have opened up an account and dabbled a bit but…

Miller, Shannon McClintock

2010-01-01

142

Experiments with isomeric beams  

International Nuclear Information System (INIS)

The results of the search for ?s-isomers performed with 112Sn and 86Kr beams at 60 MeV/nucleon with the LISE3 spectrometer at GANIL are summarized. Planned extension of these studies to high energy fragmentation reactions with the FRS separator at GSI is described. Some perspectives for experiments with isomeric beams at GSI are mentioned. (orig.).

1996-10-04

143

Electronics for LHC Experiments  

Energy Technology Data Exchange (ETDEWEB)

This document gathers the abstracts of most presentations made at this workshop on electronics for the large hadron collider (LHC) experiments. The presentations were arranged into 6 sessions: 1) electronics for tracker, 2) trigger electronics, 3) detector control systems, 4) data acquisition, 5) electronics for calorimeters and electronics for muons, and 6) links, power systems, grounding and shielding, testing and quality assurance.

NONE

2004-07-01

144

HCDA bubble experiment, (2)  

International Nuclear Information System (INIS)

[en] An experiment simulating the behavior of the very large steam bubbles generated at the time of an accident of core collapse was carried out with a warm water tank, and the applicability of the theory of very small bubble disappearance known at present was examined. The bubbles generated in HCDA (hypothetical core disruptive accident) are expected to be very large, containing sodium, fuel, FP gas and so on, and play important role in the mechanism of emitting radioactive substances in the safety analysis of LMFBRs. In this experiment, the degree of subcool of the warm water pool, the initial radii of steam bubbles and the blowoff pressure of steam were taken as the parameters. The radius of the steam bubbles generated in the experiment was about 6.5 cm, and the state of disappearance was different above and below the degree of unsaturation of 10 deg C. Comparing the disappearance curve obtained by the experiment with the theory of disappearance of small bubbles, the experimental values were between inertia-controlled disappearance and heat transfer-controlled disappearance, and this result was able to be explained generally with the model taking the pressure change within steam bubbles into account. The rise of bubbles was also observed. (Kako, I.)

1981-01-01

145

Ongoing experiments: diagnostics requirements  

International Nuclear Information System (INIS)

The paper reviews the fuel motion diagnostics needs for ongoing LMFBR safety experiments over approximately the next five years, with the discussion centered on TREAT. Brief comments on the direction in which clad motion diagnostics requirements are expected to develop are also presented

1976-10-09

146

Lead Radius Experiment PREX.  

Science.gov (United States)

The proposed PREX experiment at Jefferson Lab will measure the parity-violating electroweak asymmetry in the elastic scattering of polarized electrons at an energy of 850 MeV and a scattering angle of 6 degrees. Since the Z0 boson couples mainly to neutro...

R. M. Chaels

2006-01-01

147

Operational experience of HFETR  

International Nuclear Information System (INIS)

Some of practical experiances obtained from the decadal operation of HFETR are described, such as the simplifide calculation method of the maximum permissible power, interference effect and relative efficiency calibration of control rods. Features of improved primary coolant system, loss of coolant monitoring during operation and so on are presented. Also, accident analysis and treatment are briefly introduced

1990-01-01

148

Mood and birth experience.  

UK PubMed Central (United Kingdom)

BACKGROUND: Those at the birth of a baby sometimes speak of the experience as significant and meaningful; an experience in which there is an atmosphere or mood that surrounds the occasion. This paper explores this mood, its recognition, disclosure and how we attune or not to it. The paper is philosophically underpinned by hermeneutic phenomenology. The Heideggerian notion of "attunement to mood" is used to interpret this phenomenon. This paper describes how such a mood becomes visible. METHODS: Using a hermeneutic phenomenological approach, 14 tape-recorded transcribed interviews, each about an hour long, were conducted over 8 months from mothers, birth partners, midwives and obstetricians. The stories crafted from these transcripts have been interpreted alongside my own preunderstandings and related literature. Appropriate ethical approval was gained. FINDINGS: Analysis suggests that there is a positively construed mood of joy at birth that can be concealed when disrupted. Disturbing this mood has the effect of exposing the world of birth and its inherent activities and feelings revealing possible meanings inherent in the lived birth experiences. Disturbances at birth provide distinctions and tensions in which a concealed constitutive mood at birth can be seen. This paper provides insight towards a deeper appreciation into how the sacred joy of birth may be protected. IMPLICATIONS FOR PRACTICE: The way in which we attune to birth may have consequences to birth outcomes and to the experience of childbirth. The consequences of these findings for those in the world of birth are discussed.

Crowther S; Smythe L; Spence D

2013-03-01

149

FLORIDA TOWER FOOTPRINT EXPERIMENTS  

Energy Technology Data Exchange (ETDEWEB)

The Florida Footprint experiments were a series of field programs in which perfluorocarbon tracers were released in different configurations centered on a flux tower to generate a data set that can be used to test transport and dispersion models. These models are used to determine the sources of the CO{sub 2} that cause the fluxes measured at eddy covariance towers. Experiments were conducted in a managed slash pine forest, 10 km northeast of Gainesville, Florida, in 2002, 2004, and 2006 and in atmospheric conditions that ranged from well mixed, to very stable, including the transition period between convective conditions at midday to stable conditions after sun set. There were a total of 15 experiments. The characteristics of the PFTs, details of sampling and analysis methods, quality control measures, and analytical statistics including confidence limits are presented. Details of the field programs including tracer release rates, tracer source configurations, and configuration of the samplers are discussed. The result of this experiment is a high quality, well documented tracer and meteorological data set that can be used to improve and validate canopy dispersion models.

WATSON,T.B.; DIETZ, R.N.; WILKE, R.; HENDREY, G.; LEWIN, K.; NAGY, J.; LECLERC, M.

2007-01-01

150

United Kingdom's experience  

International Nuclear Information System (INIS)

This is a presentation of the United Kingdom's experience with power transmission open access. The topics of the presentation include the objectives of changing, commercial arrangements and economic drivers, long term effects, the effects of moving to a more competitive environment, and factors affecting open access such as political climate and market regulation

1994-01-01

151

Experiences with polarised targets  

CERN Multimedia

The use of polarized proton target has been developed to study elementary particle reactions. After a brief survey of technical developments, the experiments realized at CERN and Serpukhov on polarization phenomena in elastic and charge exchange reactions above 6 GeV are described. (0 refs).

Ducros, Y

1974-01-01

152

DSWA calorimeter bomb experiments  

Energy Technology Data Exchange (ETDEWEB)

Two experiments were performed in which 25 grams of TNT were detonated inside an expended detonation calorimeter bomb. The bomb had a contained volume of approximately 5.28 liters. In the first experiment, the bomb was charged with 3 atmospheres of nitrogen. In the second, it was charged with 2.58 atmospheres (23.1 psi gage) of oxygen. In each experiment pressure was monitored over a period of approximately 1200 microseconds after the pulse to the CDU. Monitoring was performed via two 10,000 psi 102AO3 PCB high frequency pressure transducers mounted symmetrically in the lid of the calorimeter bomb. Conditioners used were PCB 482As. The signals from the transducers were recorded in digital format on a multi channel Tektronix scope. The sampling frequency was 10 Mhz (10 samples per microsecond). After a period of cooling following detonation, gas samples were taken and were subsequently submitted for analysis using gas mass spectrometry. Due to a late request for post shot measurement, it was only possible to make a rough estimate of the weight of debris (carbon) remaining in the calorimeter bomb following the second experiment.

Cunningham, B

1998-10-01

153

PERICLES 2D experiment  

International Nuclear Information System (INIS)

Scope of the lecture was the modelling of severe reactor accidents. The PERICLES 2D experiment was compared to CATHARE 3D simulation results considering progression of a quench front inside the reactor core, steam flow rates, heat conduction, cladding temperature. (uke)

2001-01-01

154

PERICLES 2D experiment  

Energy Technology Data Exchange (ETDEWEB)

Scope of the lecture was the modelling of severe reactor accidents. The PERICLES 2D experiment was compared to CATHARE 3D simulation results considering progression of a quench front inside the reactor core, steam flow rates, heat conduction, cladding temperature. (uke)

Morel, Christophe

2001-07-01

155

Experiment R701  

CERN Document Server

This experiment was designed by the CERN-Aachen-MPI/Munich-Heidelberg Collaboration to study inelastic proton-proton collisions with streamer chambers. The photo shows the lower streamer chamber closely fitting around the central bicone vacuum chamber at I-7. The upper chamber, here removed, was similarly fitted (Photo Archive 7401099).

1974-01-01

156

Prospects in coincidence experiments  

International Nuclear Information System (INIS)

The sensitivity of virtual photons to the local variations of the charge and magnetization densities is exploited to study the short-range part of the nucleon-nucleon interaction inside the nucleus. The possibility of varying energy, squared mass and longitudinal polarization of the photons independently enables us to disentangle the mechanisms related to the internal structure of the nucleon (e.g. quark interchange) and the contribution due to meson exchange. Coincidence experiments of the type (e,e'N) and (e,e'NN) are performed to suppress the meson contribution to the longitudinal part of the quasi-elastic peak. Four typical examples of coincidence experiments induced by virtual photons are discussed: experiments (1) on the spectroscopic structure of the quasi-elastic peak and the problem of deep lying hole states; (2) on the structure of the continuum; (3) on the low energy side of the quasi-elastic peak; and finally a three-arm coincidence experiment. (Auth.)

1984-01-01

157

A Monopoly Classroom Experiment.  

Science.gov (United States)

Uses a simple classroom experiment to develop the economic model of monopoly. Introduces students to the nature of the monopoly problem and motivates them to think of the associated effects. Highlights the role of information and fairness ideals in determining economic outcomes. (RLH)

Oxoby, Robert J.

2001-01-01

158

The CHORUS experiment  

International Nuclear Information System (INIS)

The Chorus experiment, which aims at a search for ?? ? ?? oscillations using the neutrino beam of the CERN-SPS, has successfully taken data in 1994 and 1995. The detection technique will be discussed and the performances of the apparatus as well as a status report will be given. (orig.)

1996-01-01

159

A Simple Adsorption Experiment  

Science.gov (United States)

The study of adsorption phenomenon is one of the most relevant and traditional physical chemistry experiments performed by chemistry undergraduate students in laboratory courses. In this article, we describe an easy, inexpensive, and straightforward way to experimentally determine adsorption isotherms using pieces of filter paper as the adsorbent…

Guirado, Gonzalo; Ayllon, Jose A.

2011-01-01

160

Status of MEG experiment  

International Nuclear Information System (INIS)

The MEG experiment is aiming to measure a lepton flavour violating decay ??e? with sensitivity 10-13 in order to probe the new physics beyond the standard model. Experimental setup consisted of a positron spectrometer, a liquid xenon calorimeter and a timing counter is recently completed and verified. Since a middle of 2008 a data taking is going on.

2009-01-01

 
 
 
 
161

Lidar calibration experiments  

DEFF Research Database (Denmark)

A series of atmospheric aerosol diffusion experiments combined with lidar detection was conducted to evaluate and calibrate an existing retrieval algorithm for aerosol backscatter lidar systems. The calibration experiments made use of two (almost) identical mini-lidar systems for aerosol cloud detection to test the reproducibility and uncertainty of lidars. Lidar data were obtained from both single-ended and double-ended Lidar configurations. A backstop was introduced in one of the experiments and a new method was developed where information obtained from the backstop can be used in the inversion algorithm. Independent in-situ aerosol plume concentrations were obtained from a simultaneous tracer gas experiment with SF6, and comparisons with the two lidars were made. The study shows that the reproducibility of the lidars is within 15%, including measurements from both sides of a plume. The correspondence with in-situ measurements is excellent. Finally, the new backstop method is able to reveal information which can close the lidar equation by obtaining the relation between backscatter and extinction in an aerosol cloud.

Ejsing JØrgensen, Hans; Mikkelsen, T.

1997-01-01

162

Invisalign: early experiences.  

UK PubMed Central (United Kingdom)

This article describes the Invisalign technique. It is based on the author's personal experience of over 60 cases started in the private practice setting. The technology behind Invisalign and its development is reviewed. The Invisalign clinical technique is described, and the advantages and disadvantages of using Invisalign are highlighted.

Joffe L

2003-12-01

163

Invisalign: early experiences.  

Science.gov (United States)

This article describes the Invisalign technique. It is based on the author's personal experience of over 60 cases started in the private practice setting. The technology behind Invisalign and its development is reviewed. The Invisalign clinical technique is described, and the advantages and disadvantages of using Invisalign are highlighted. PMID:14634176

Joffe, L

2003-12-01

164

RFX experiment layout  

International Nuclear Information System (INIS)

The layout of the buildings forming the site of the RFX experiment is described. The main features concerning the grounding system (both for the safety and for the operation of the machine) are discussed together with those of the screening system for the diagnostics and control areas. 6 figs.

1987-01-01

165

ATA beam director experiment  

International Nuclear Information System (INIS)

This report describes beam director elements for an experiment at the Advanced Test Accelerator. The elements described include a vernier magnet for beam aiming, an achromat magnet, and an isolation system for the beam interface. These components are built at small scale for concept testing.

1986-01-01

166

Recommending search experiences  

Digital Repository Infrastructure Vision for European Research (DRIVER)

In this paper we focus on a multi-case case-based reasoning system to support users during collaborative search tasks. In particular we describe how repositories of search experiences/knowledge can be recommended to users at search time. These recommendations are evaluated using real-world search da...

Saaya, Zurina; Smyth, Barry; Coyle, Maurice; Briggs, Peter

167

[Laparoscopic cholecystectomy. Personal experience  

UK PubMed Central (United Kingdom)

Personal experience in the treatment of 120 patients submitted to laparoscopic cholecystectomy from March 1992 to September 1993 is presented. The good results obtained suggest that VLC is the best surgical approach for the treatment of cholelithiasis in reason of diminished pain after surgery, shortened hospital stay and early return to work.

Rossi EM; Aloise F; Pastorcich A; Filosa L; Costanzo A; Franco G

1994-07-01

168

Alpha Antihydrogen Experiment  

CERN Multimedia

ALPHA is an experiment at CERN, whose ultimate goal is to perform a precise test of CPT symmetry with trapped antihydrogen atoms. After reviewing the motivations, we discuss our recent progress toward the initial goal of stable trapping of antihydrogen, with some emphasis on particle detection techniques.

Fujiwara, M C; Ashkezari, M D; Baquero-Ruiz, M; Bertsche, W; Bray, C C; Butler, E; Cesar, C L; Chapman, S; Charlton, M; Cesar, C L; Fajans, J; Friesen, T; Gill, D R; Hangst, J S; Hardy, W N; Hayano, R S; Hayden, M E; Humphries, A J; Hydomako, R; Jonsell, S; Kurchaninov, L; Lambo, R; Madsen, N; Menary, S; Nolan, P; Olchanski, K; Olin, A; Povilus, A; Pusa, P; Robicheaux, F; Sarid, E; Silveira, D M; So, C; Storey, J W; Thompson, R I; van der Werf, D P; Wilding, D; Wurtele, J S; Yamazaki, Y

2011-01-01

169

Chlorine solar neutrino experiment  

Energy Technology Data Exchange (ETDEWEB)

The chlorine solar neutrino experiment in the Homestake Gold Mine is described and the results obtained with the chlorine detector over the last fourteen years are summarized and discussed. Background processes producing /sup 37/Ar and the question of the constancy of the production rate of /sup 37/Ar are given special emphasis.

Rowley, J.K.; Cleveland, B.T.; Davis, R. Jr.

1984-01-01

170

Recent Photon Echo Experiments.  

Science.gov (United States)

A sample irradiated by resonant light pulses at t = 0 and t = tau can exhibit a macrocopic oscillating dipole moment at t = 2 tau, resulting in the emission of a burst of coherent spontaneous radiation. Experiments are described which have been performed ...

N. A. Kurnit S. R. Hartmann

1967-01-01

171

The Mobilisatsia experience  

International Nuclear Information System (INIS)

The hazards of long-duration manned space flight are real. In order to participate effectively in long duration orbital missions or to continue the exploration of space, the health of the astronaut must be secured. There is mounting evidence that changes in the immune response of an astronaut in short-term flights, resemble those occurring after acute stress, while the changes during long-term flights resemble those caused by chronic stress. This blunting of the immune system occurs concomitant with a relative increase in microbial contamination in the space cabin environment. Such a combination of events results in an increased probability of in-flight infectious events. Micro-organisms are subject to a genetic evolution, which may lead to the capacity to colonize new environments and to cause infections. Central players in this evolutionary process are mobile genetic elements. They help to mobilize and reorganize genes, be it within a given genome (intragenomic mobility) or between bacterial cells (intercellular mobility). Hence, the processes of genetic exchange can mobilize genetic elements between bacterial strains, and therefore play a role in determining the infectious potential. The specific confined environment and space-flight related factors (such as microgravity and cosmic radiation) may increase the frequency in which mobile genetic elements are exchanged between micro organisms. The aim of the Mobilisatsia experiment was to promote microbial gene transfer under space flight conditions during a short-term experiment conducted aboard the International Space Station (ISS). The efficiency of the gene exchange process was compared with a synchronously performed ground control experiment. An experiment was carried out with well-characterized Gram-negative reference strains and one experiment was done with Gram-positive reference strains.

2005-01-01

172

?????????????? ??????????? ? ???????? ????????? Computer experiment in modern geophysics ?????????????? ??????????? ? ??????????? ?????????  

Directory of Open Access Journals (Sweden)

Full Text Available  ?????????? ??????? ?????? ?????????? ??????????????? ???????????? ? ?????????. ???????? ????????? ????????? ???????????. ???????? ????? ????????? ??????? ???????????? ?? ????????? ??????. Modern planning methods of computing experiments in geophysics are considered. The factor’s experiment have been given an account in detail. The special attention is given to the experiment tactics and solution adoption. ??????????? ??????????? ?????? ???????????? ??????????????? ???????????? ? ?????????. ???????? ???????? ????????? ???????????. ?????? ???????? ??????? ??????? ???????????? ? ???????? ???????.

?.?. ??????

2009-01-01

173

Status of the MEG experiment  

International Nuclear Information System (INIS)

The phsysics motivations for this experiment are presented. A general description of the experiment and of the R and D status of each sub-detector is given. The sensitivity of the experiment and its time schedule are finally presented.

2004-10-14

174

Transformations of emotional experience.  

UK PubMed Central (United Kingdom)

In this paper the author approaches mental pain and the problems in a psychoanalytic treatment of patients with difficulties in the psychic transformation of their emotional experiences. The author is interested in the symbolic failure related to the obstruction of development of phantasies, dreams, dream-thoughts, etc. She differentiates symbolization disturbances related to hypertrophic projective identification from a detention of these primitive communications and emotional isolation. She puts forward the conjecture that one factor in the arrest of this development is the detention of projective identifications and that, when this primitive means of communication is re-established in a container-contained relationship of mutual benefit, this initiates the development of a symbolization process that can replace the pathological 'protection'. Another hypothesis she develops is that of inaccessible caesuras that, associated with the detention of projective identification, obstruct any integrative or interactive movement. This caesura and the detention of projective identifications affect mental functions needed for dealing with mental pain. The personality is left with precarious mental equipment for transforming emotional experiences. How can a psychoanalytical process stimulate the development of creative symbolization, transforming the emotional experiences and leading towards mental growth? The author approaches the clinical problem with the metaphor of the psychic birth of emotional experience. The modulation of mental pain in a container-contained relationship is a central problem for the development of the human mind. For discovering and giving a meaning to emotional experience, the infant depends on reverie, a function necessary in order to develop an evolved consciousness capable of being aware, which is different from the rudimentary consciousness that perceives but does not understand. The development of mature mental equipment is associated with the personality's attitude towards mental pain. The differentiation between psychotic, neurotic or autistic functioning depends on what defences are erected to avoid mental pain. The primary link between infant and mother is where the building of mental equipment takes place, through communicational forms that, to begin with, are not verbal. The author suggests the need for the development of an ideo-grammar (in gestures, paralinguistic forms, etc.) in primary relations, as the precursor forms that will become the matrix for the mental tools for dealing with emotional experiences in a mature way. The paper stresses the significance of the parental containing function for the development of symbolization of prenatal emotional experiences. This containment develops ideograms, transformations of sense impressions into proto-symbols, instruments that attenuate the traumatic experiences of helplessness. The author takes Bion's ideas about extending the notion of dream-work to an alpha function that goes on continually, day and night, transforming raw emotional experiences in a 'dream'. In order to acquire a meaning, facts need to be 'dreamed' in this extended sense. Meaning and truth are the nurture of the mind. Mental growth, the development of adequate tools--including reverie--for dealing with mental pain, seen from a psychoanalytic perspective including reverie, implies that the object becomes a provider of meanings. Analysis begins to aim primarily at the generation or expansion of the mental container, instead of predominantly working on unconscious contents as such.

de Cortiñas LP

2013-06-01

175

Electronics for Satellite Experiments  

Energy Technology Data Exchange (ETDEWEB)

The tracking detector for the LAT science instrument on the GLAST mission is an example of a large-scale particle detection system built primarily by particle physicists for space flight within the context of a NASA program. The design and fabrication model in most ways reflected practice and experience from particle physics, but the quality assurance aspects were guided by NASA. Similarly, most of the electronics in the LAT as a whole were designed and built by staff at a particle physics lab. This paper reports on many of the challenges and lessons learned in the experience of designing and building the tracking detector and general LAT electronics for use in the NASA GLAST mission.

Johnson, Robert P.; /UC, Santa Cruz

2006-05-16

176

The PHOBOS experiment  

Energy Technology Data Exchange (ETDEWEB)

PHOBOS is an experiment designed to study Au-Au collisions at RHIC. The apparatus consists of a 4{pi} multiplicity array and two spectrometer arms. The experiment is designed to measure the polar and azimuthal angles of most particles produced in the collisions and whether they are charged particles or photons. For approximately 1% of these particles, the two spectrometer arms will measure their properties in great detail. This includes many of the particles near mid-rapidity which are expected to show the most striking effects of any new physics which may occur. PHOBOS has proceeded from the Letter of Intent stage through Proposal and Conceptual Design Review to Construction Approval. It is anticipated that data taking will commence in 1999 when RHIC first provides beam.

Betts, R.R.

1995-08-01

177

HOCUS: hole closure experiments  

International Nuclear Information System (INIS)

[en] The free-fall penetrator is one of the conceptual disposal techniques considered by the Seabed Working Group for the disposal of heat-generating radioactive waste in the deep ocean. However, one aspect of penetrator behaviour that remains unresolved is the degree to which the sediment barrier is disturbed by the penetration event. The HOCUS experiments were therefore devised to measure the properties of the sediment filling the entry pathway of the penetrator. This paper describes the experiments which were performed in the Mediterranean in a water depth of approximately 250 m and used a sea floor platform to probe and core the entry pathways of a number of penetrators. (author)

1989-01-01

178

The OPERA experiment  

Energy Technology Data Exchange (ETDEWEB)

Following the Super-Kamiokande findings on atmospheric neutrinos, accelerator neutrinos have started to be exploited to confirm the indication for neutrino oscillations and perform more complete measurements of the mass differences and mixing parameters. In Europe, the long baseline beam CERN Neutrino to Gran Sasso CNGS is aimed at direct appearance searches of {nu}{sub {mu}} {yields}{nu}{sub {tau}}. The OPERA experiment in Gran sasso will use photographic emulsions in a large hybrid detector to point at {nu}{sub {tau}} interactions coming from the CNGS beam in a ''zero background'' approach. The principles of the experiment and its projected performances are described. (orig.)

Pessard, H. [Laboratoire d' Annecy-le-Vieux de Physique des Particules, 74 - Annecy (France)

2001-07-01

179

Operating experience with WAK  

International Nuclear Information System (INIS)

The Karlsruhe Reprocessing Plant WAK was built as a pilot plant between 1967 and 1970 and began active operation in the fall of 1971 following a commissioning program which involved several stages. The plant primarily serves the purpose of conveying operating experience and is used for the advancement of the technology of chemical reprocessing of spent fuel elements. Operating experience so far has established important preconditions to the construction of a large reprocessing plant. While at the time WAK was planned, ten years ago, different reprocessing techniques were still under discussion, the PUREX flowsheet adopted in WAK is now internationally regarded as the only technique applicable on a large technical scale. Numerous improvements of the equipment brought about in the course of operation helped to improve the results of main and auxiliary process units. (orig.)

1975-01-01

180

LASL fast liner experiment  

Energy Technology Data Exchange (ETDEWEB)

The LASL Fast Liner Experiment explores a fusion concept in which a prepared plasma is adiabatically compressed to thermonuclear temperatures and densities by a rapidly imploding solid metal liner. A prepared plasma having ..beta.. > 1 is in contact with the liner and end plugs, and contains an embedded magnetic field to inhibit thermal conduction. Cylindrical liners are magnetically imploded by a large axial current carried in the liner shell. Theoretical estimates indicate an implosion velocity of at least 10/sup 6/ cm/s is necessary for this geometry if the plasma heating rate is to be greater than the cross-field thermal conduction loss rate. Experimental work to develop this concept involves attempts to provide a suitable preplasma for liner implosions as well as studies of magnetically driven liner implosions. In the plasma preparation experiments a coaxial plasma gun was used to inject plasma into a simulated liner geometry.

Sherwood, A.R.; Cantrell, E.L.; Henins, I.; Hoida, H.W.; Jarboe, T.R.; Malone, R.C.; Marshall, J.

1980-01-01

 
 
 
 
181

Fast critical experiments  

International Nuclear Information System (INIS)

A review of fast-neutron critical experiments is presented. The history of the assemblies falls into three overlapping phases. The first, beginning in 1948, relates to simple, compact metal assemblies with extremely high-energy neutron spectra. Examples given of this type of assembly, with critical specifications, spectral indexes, and reactivity calibration are LADY GODIVA, FLATTOP, JEZEBEL and U(16). Details are also given for early experiments with TOPSY. The second phase, starting 6 years later, covers larger, more diffuse assemblies that are still simply describable because of uniform core and reflector regions. Descriptions, spectral indices and reactivity coefficients are given for Big Ten, ZPR-3, ZPR-6, VERA, FR0, ZEBRA and SNEAK assemblies. These two categories encompass the so-called benchmark assemblies. The final phase, not discussed, started in 1955 and applies to engineering mock-ups of fast reactors. (U.K.).

1981-01-01

182

Ultra cold neutron experiments  

International Nuclear Information System (INIS)

The preliminary experiment of the detection of ultra cold neutrons has been performed. The ultra cold neutrons have the energy of 10-7 eV. which is smaller than the effective potential from nuclei. Accordingly, the ultra cold neutrons are reflected from the surface of a material. It is possible to confine the ultra cold neutrons in a box with reflective inner surfaces. Neutron bottle experiment was performed by using an electron linear accelerator at Kyoto University Research Reactor Institute. The counting more than background was observed. The measurement of neutron energy by the TOF method was carried out, and it can be said that the ultra cold neutrons were detected. (Kato, T.).

1982-02-10

183

Improving the patient's experience  

Directory of Open Access Journals (Sweden)

Full Text Available When arriving at the eye care unit, patients often feel unsure of what is going to happen, anxious, and vulnerable. Many have never found themselves in a hospital setting before or have never travelled or slept away from home.It is an integral part of eye care to make sure a patient's experience is a positive one. This article offers suggestions for good, evidence-based, practice to improve this experience.Our suggestions should necessarily be adapted to local context: resource-poor settings are particularly challenging work environments and staff may need to display more ingenuity in working towards good practice, when striving to achieve the goals of VISION 2020.

C Patricia Fathers; Sue Stevens

2008-01-01

184

Gross decontamination experiment report  

Energy Technology Data Exchange (ETDEWEB)

A Gross Decontamination Experiment was conducted on various levels and surfaces of the TMI - Unit 2 reactor building in March 1982. The polar crane, D-rings, missile shields, refueling canals, refueling bridges, equipment, and elevations 305' and 347'-6'' were flushed with low pressure water. Additionally, floor surfaces on elevation 305' and floor surfaces and major pieces of equipment on elevation 347'-6'' were sprayed with high pressure water. Selective surfaces were decontaminated with a mechanical scrubber and chemicals. Strippable coating was tested and evaluated on equipment and floor surfaces. The effectiveness, efficiency, and safety of several decontamination techniques were established for the large, complex decontamination effort. Various decontamination equipment was evaluated and its effectiveness was documented. Decontamination training and procedures were documented and evaluated, as were the support system and organization for the experiment.

Mason, R.; Kinney, K.; Dettorre, J.; Gilbert, V.

1983-07-01

185

Stirling machine operating experience  

Energy Technology Data Exchange (ETDEWEB)

Numerous Stirling machines have been built and operated, but the operating experience of these machines is not well known. It is important to examine this operating experience in detail, because it largely substantiates the claim that Stirling machines are capable of reliable and lengthy lives. The amount of data that exists is impressive, considering that many of the machines that have been built are developmental machines intended to show proof of concept, and were not expected to operate for any lengthy period of time. Some Stirling machines (typically free-piston machines) achieve long life through non-contact bearings, while other Stirling machines (typically kinematic) have achieved long operating lives through regular seal and bearing replacements. In addition to engine and system testing, life testing of critical components is also considered.

Ross, B.; Dudenhoefer, J.E.

1991-01-01

186

The deconstructive experience.  

UK PubMed Central (United Kingdom)

Logocentrism was conceptualized by Jacques Derrida as connoting the assertion within Western philosophical traditions of certain assumed truths and the exclusion of alternative perspectives. In this paper, the author proposes that the concept of logocentrism may be usefully applied within the clinical situation to enrich understanding of splitting between idealized and devalued perceptions of self and others. He presents a case of a woman with borderline personality disorder to illustrate a logocentric self-structure, as well as how common psychotherapeutic models inadvertently risk reinforcing such structures through the hierarchical nature of the patient-therapist relationship. The process of deconstructing logocentric self-structures is facilitated by the patient experiencing the therapist paradoxically as an extension of the self that sometimes behaves contrary to expectations. Such a deconstructive experience challenges reified perceptions of self and others, serves to broaden the experience of self, and enhances qualities of self-reflection and empathy.

Gregory RJ

2005-01-01

187

The deconstructive experience.  

Science.gov (United States)

Logocentrism was conceptualized by Jacques Derrida as connoting the assertion within Western philosophical traditions of certain assumed truths and the exclusion of alternative perspectives. In this paper, the author proposes that the concept of logocentrism may be usefully applied within the clinical situation to enrich understanding of splitting between idealized and devalued perceptions of self and others. He presents a case of a woman with borderline personality disorder to illustrate a logocentric self-structure, as well as how common psychotherapeutic models inadvertently risk reinforcing such structures through the hierarchical nature of the patient-therapist relationship. The process of deconstructing logocentric self-structures is facilitated by the patient experiencing the therapist paradoxically as an extension of the self that sometimes behaves contrary to expectations. Such a deconstructive experience challenges reified perceptions of self and others, serves to broaden the experience of self, and enhances qualities of self-reflection and empathy. PMID:16555459

Gregory, Robert J

2005-01-01

188

Microwave Tokamak Experiment  

International Nuclear Information System (INIS)

[en] The Microwave Tokamak Experiment, now under construction at the Laboratory, will use microwave heating from a free-electron laser. The intense microwave pulses will be injected into the tokamak to realize several goals, including a demonstration of the effects of localized heat deposition within magnetically confined plasma, a better understanding of energy confinement in tokamaks, and use of the new free-electron laser technology for plasma heating. The experiment, soon to be operational, provides an opportunity to study dense plasmas heated by powers unprecedented in the electron-cyclotron frequency range required by the especially high magnetic fields used with the MTX and needed for reactors. 1 references, 5 figures, 3 tables

1988-01-01

189

Preliminary experience with mammography  

International Nuclear Information System (INIS)

[en] Radiologists with very limited practical experience in mammography initially achieved a low PVsub(pos) (0.50) and a high PVsub(neg) (0.95) in blind mammography of 80 patients with 85 excised and histologically examined breast tumours. After having read films from approximately 2500 patients the initial films were blindly reevaluated. PVsub(neg) was unchanged, whereas PVsub(pos) was elevated significantly (0.80). The intraobserver variation was 11.5 per cent. The actual interobserver variation was 3.2 per cent. These findings indicate that the reliability of blind mammography in patients with palpable tumours of the breast is considerable, also in case of only limited mammographic experience. (orig.)

1985-01-01

190

THE SCHOOL CLIMATE EXPERIENCES  

Directory of Open Access Journals (Sweden)

Full Text Available This paper analyses the quality of the school climate. One of its objectives isto define such basic terms as environment, atmosphere, climate, and selected climatevariants, above all the school climate. Attention is also paid to the following five areasof school life, which are in my opinion of significance: 1) the overall attitude to schooland the motivation to study 2) teachers` qualities and competences 3) school rules andthe discipline in class 4) the solidarity of the class as a social group 5) thearchitectural, aesthetic and hygienic aspects of the school. The thesis also wants topresent new practical methods supported by long experience of the school climategained abroad and even by similar experience lately picked up in the Czech republic.

JANA KANTOROVÁ

2011-01-01

191

Reconstruction of preverbal experiences.  

UK PubMed Central (United Kingdom)

Only a few analysts (Deutsch, 1947, 1952; Braatøy, 1954) have systematically tried to investigate how nonverbal behavior may be derived from events and experiences from the preverbal phase of development. Their approaches to the analysis of such behavior differ. Extracts of an analysis are used to illustrate basic technical and theoretical questions with regard to the possibility of making use of nonverbal material to reconstruct preverbal experiences. It is inferred that the analyst's visual observations of the patient's nonverbal behavior may be a cue to significant events and trauma from the preverbal period. Besides, the specific visual imagery of the patient that, in this case, emerged just after the appearance of nonverbal behavior, may be a valuable source of data for analytic reconstruction.

Anthi PR

1983-01-01

192

Summary on experiments  

International Nuclear Information System (INIS)

[en] Experimental studies of the atomic structures of both simple and complex atoms and ions provide crucial tests of atomic structure theory and of calculational techniques for a wide range of atomic systems. This summary is restricted to a brief discussion of some recent and current experiments in few-electron and many-electron atoms and ions which represent exciting challenges to sophisticated atomic structure calculations, discussed elsewhere. In particular the emphasis is on high-Z systems

1980-12-05

193

A humbling experience.  

UK PubMed Central (United Kingdom)

In February 2009, retired nurse Sir Stephen Moss was appointed as a non-executive board director at Mid Staffordshire NHS Foundation Trust, which was under investigation for poor care. Two weeks later a damning Healthcare Commission report revealed the full extent of Stafford Hospital's failings. Sir Stephen went on to chair the trust's board until January. He describes what the hospital was like and how it has changed, how he tackled the challenge, and how the experience affected him

Agnew T

2012-03-01

194

Red and Black Experiment  

Science.gov (United States)

This resource consists of a Java applet and expository text. The applet simulates the red and black experiment in which a player bets on a sequence of Bernoulli trials until a target fortune is reached or the player is ruined. The initial fortune, target fortune, and trial win probability can be varied, and the user can select either of two basic strategies: timid play or bold play.

Siegrist, Kyle

195

Future solar neutrino experiments  

Energy Technology Data Exchange (ETDEWEB)

The goal for future solar neutrino experiments is the determination of the neutrino oscillation parameters and the neutrino fluxes from the different solar nuclear fusion processes. This fluxes should be determined for electron neutrinos and neutrinos undergoing neutral current interaction only like muon and tauon neutrinos. With this experimental data we will have a new set of information in elementary particle physics and astrophysics which will allow us a new insight in both fields being presently ready for an epoch of fundamental discoveries.

Feilitzsch, Franz von

2000-01-01

196

Mirror Drawing Experiment  

Science.gov (United States)

This is the entry page for participation in the Mirror Drawing Experiment. This study is designed to demonstrate that for right-handed people, who comprise over 90% of the population, the right hemisphere performs visual spatial tasks better than the left hemisphere. For most right-handers, whereas the left hemisphere excels in verbal and analytical tasks, the right hemisphere specializes in emotional, nonverbal, and visual-spatial tasks.

Mccarthy, Maureen

2006-01-18

197

DIRAC experiment at CERN  

CERN Document Server

The precise measurements of $\\pi^+\\pi^-$ and $\\pi K$ atom lifetime allow to check the predictions of Chiral Perturbation Theory for the pion-pion s-wave scattering lengths with isospin 0 and 2 and for the pion-kaon scattering lengths with isospin 1/2 and 3/2. The DIRAC experiment with the latest results is presented together with the proposal for future investigations.

Benelli, Angela

2012-01-01

198

Radiotracer experiments with phytoplankton  

International Nuclear Information System (INIS)

[en] Various experimental designs for performing radiotracer uptake and loss experiments with marine phytoplankton are discussed. The preparation of the media, treatment of radiosources, sampling of seawater and isolation of phytoplankton species are described. Special attention is given to the influence of different physico-chemical states of isotopes and other important parameters on bioaccumulation and loss of radionuclides. Several suggestions for the graphical presentation of data are given. (author)

1975-01-01

199

[Ethics and animal experiments.].  

UK PubMed Central (United Kingdom)

BACKGROUND AND OBJECTIVES: This is a major subject since the aim is to grant human beings physical, mental, social and spiritual well-being without forgetting the sacred rights of all animals. Most international codes dealing with health-related research practices state that research developed in human beings should be based on previous lab animal experiments or on other scientific data. This article aimed at explaining ethics in animal experiments. CONTENTS: The concepts of dissertation and thesis, experimental thesis, experimental essay or pilot experiment and experimental animal facilities are reviewed. Then, a historical retrospective is drawn about the first attempt to develop experimental research policies during the mid 19th Century, in London. It is highlighted that some criteria defined by that time still persist. The first animal research ethical committee was created in Sweden in 1979, followed by the USA in1984. In Brazil, animal research ethical committees were created as late as in the 90s. The Federal Law 6638 was passed in May 1979 and provides for the didactic-scientific practice of animal vivisection. This law, however, is still waiting for regulation. In addition, there are some drafts being analyzed by the Congress, which provide for the use of animals for teaching and research purposes. Finally, the policies adopted by the Brazilian College of Animal Experiments and the Universal Declaration of Animal Rights are presented. CONCLUSIONS: Professors, postgraduates, residents and graduate students of a Medical School involved in animal research should be aware of the ethical principles aiming at protecting animals selected for scientific work.

Schnaider TB; Souza Cd

2003-04-01

200

Stress and Strain Experiment  

Science.gov (United States)

The Materials Science and Technology Teacher's Workshop (MAST) provides this experiment as an introduction to stress and strain. The lesson allows students the opportunity to "design and make a concrete cylinder and beam that can withstand the greatest applied load." The concepts of comprehensive and tensile stress are incorporated into the lesson plan. Links to useful video clips, diagrams and discussion questions are included. The exercise should take about 90 minutes of class time.

2012-12-24

 
 
 
 
201

"We work on experiments"  

CERN Multimedia

Short BBC (?) report on CERN. Emphasis on international collaboration, with Soviets and Chinese highlighted. At end, interview with Danish physicist (our of sync) who talks about working on Sundays and how experiments have 25 people, therefore it is a long way to glory. ISR. Comments: Film scratched and dirty. Colour pink. Looses sync at the end. Video transfer ends before the end of the film.

BBC

1975-01-01

202

Experiment Assistance Service  

International Nuclear Information System (INIS)

The mission of this service is the technical preparation and assistance afforded to experiments. The report presents activities related to the groups: CMS-ECAL, MANOIR, CIBLES, CFI, CMS-Trace, EI, CAS and BIAS. The Service's personnel was implied in the following directions of activity: detectors, thin layers, cryogenics and vacuum, electronics, computer science, electromechanics, metrology, data acquisition, project follow-up, mechanical design, CAO 2D-3D etc. The paper describe also the interventions and realizations of certain projects

1998-01-01

203

The SAMPLE experiment  

International Nuclear Information System (INIS)

The neutral weak magnetic form factor of the nucleon can be studied in parity-violating electron-nucleon scattering. The measurement of this form factor enables determination of the contribution of strange quark-antiquark to the proton's magnetic moment. We have recently obtained the first results on the neutral weak magnetic form factor using this method in the SAMPLE experiment at MIT/Bates.

1997-05-20

204

The Vinca dosimetry experiment  

International Nuclear Information System (INIS)

On 15 October 1958 there occurred a very brief uncontrolled run of the zero-power reactor at the Boris Kidric Institute of Nuclear Science, Vinca, near Belgrade, Yugoslavia. During this run six persons received various doses of radiation. They were subsequently given medical treatment of a novel kind at the Curie Hospital, Paris. In atomic energy operations to date, very few accidents involving excessive radiation exposure to human beings have occurred. In fact, the cases of acute radiation injury are limited to about 30 known high exposures, few of which were in the lethal or near-lethal range. Since direct experiment to determine the effects of ionizing radiation on man is unacceptable, information on these effects has to be based on a consideration of data relating to accidental exposures, viewed in the light of the much more extensive data obtained from experiments on animals. Therefore, any direct information on the effects of radiation on humans is very valuable. The international dosimetry project described in this report was carried out at Vinca, Yugoslavia, under the auspices of the International Atomic Energy Agency to determine the precise amount of radiation to which the persons had been exposed during the accident. These dosimetry data, together with the record of the carefully observed clinical effects, are of importance both for the scientific study of radiation effects on man and for the development of methods of therapy. The experiment and measurements were carried out at the end of April 1960. The project formed part of the Agency's research programme in the field of health and safety. The results of the experiment are made available through this report to all Member States

1958-10-15

205

The COFE experiment  

Science.gov (United States)

We describe the recent technical developments of the COsmic Foreground Explorer (COFE) experiment, a balloon-borne microwave polarimeter to measure the polarization characteristics of Galactic foregrounds at microwave frequencies below 40 GHz. Detectors and gondola designs are shown. COFE is designed for short-flights of 12 to 24 hours at a target altitude of 35 km in the Northern and Southern Hemispheres but is also being set up for possible LDB and ULDB flights.

Villela, Thyrso

206

Experiences with groundwater contamination  

Energy Technology Data Exchange (ETDEWEB)

This book discusses developments in combating groundwater contamination. The papers include: Regulation of Groundwater; Utility Experiences Related to Existing and Proposed Drinking Water Regulations; Point-of-Use Treatment Technology to Control Organic and Inorganic Contamination; Hazardous Waste Disposal Practices and Groundwater Contamination; Reverse Osmosis Treatment to Control Inorganic and Volatile Organic Contamination; The Dilemma of New Wells Versus Treatment; Characteristics and Handling of Wastes From Groundwater Treatment Systems; and Removing Solvents to Restore Drinking Water at Darien, Connecticut.

1984-01-01

207

The Aeroassist Flight Experiment  

Science.gov (United States)

The key design drivers for the Aeroassist Flight Experiment are discussed and a description is given of the flight test vehicle, its flight conditions, and instrumentation. The aeroassisted orbital transfer vehicle (AOTV) operates at higher velocities than the Space Shuttle and at higher altitudes than Apollo. Issues such as the effect of shock-layer nonequilibrium on the levels of radiative and convective heating and of viscous and real-gas effects on vehicle aerodynamic characteristics are mentioned.

Walberg, G. D.; Siemers, P. M., III; Calloway, R. L.; Jones, J. J.

1987-10-01

208

Prototype Plasma Dynamo Experiments  

Science.gov (United States)

The Madison Plasma Dynamo Experiment (MPDX) is under construction to explore the self-excitation processes of a range of astrophysical dynamos. NIMROD simulations of von K'arm'an flow, in which the upper and lower hemispheres of the plasma are spun in opposite directions, have shown that the resulting two vortex flow can produce a dynamo when the magnetic Reynolds number is sufficiently high. This poster discusses prototype experiments on the Plasma Couette Experiment (PCX) to create von K'arm'an flow. The PCX (like the MPDX) uses an axisymmetric multicusp plasma confinement scheme that works in tandem with electrodes of alternating bias to create flow at the plasma boundary via ExB drift. This poster will review the theory with an emphasis on requirements on the plasma parameters and then show that the measured plasma parameters (ne 10^17 m-3, Te˜ 10 eV) and flow speeds of 10 km/sec are high enough to self-excite, but are in a regime in which Hall MHD will likely be important. Higher densities (possible with higher power LaB6 cathodes) will be required to operate in the MHD regime. Work supported by NSF.

Weisberg, David; Forest, Cary; Collins, Cami; Katz, Noam; Khalzov, Ivan; Wallace, John; Clark, Mike

2010-11-01

209

New Zealand experience  

Energy Technology Data Exchange (ETDEWEB)

Experiences gained from the deregulation of banking, ports, airports, air traffic control, railways, telecommunications, postal services, as well as the electricity and natural gas industries were discussed. In this presentation the electricity industry was singled out as the best example of restructuring intended to achieve economic efficiency by opening the industry to market competition. The task was accomplished by separating the potentially competitive areas of generation and supply from the natural monopoly functions of transmission and distribution, and by imposing tighter controls on the latter. Some of the basic assumptions underlying efforts at privatization -- freedom for buyers and suppliers to transact business in a natural environment, effective competition among participants, ability of individual buyers to contract for security of supply at the level required, safeguards against abuses of power -- , the restructuring issues, and the remaining regulatory regime were reviewed. The outcome of the New Zealand experiment was the admission that opening up the industry to competition produced some winners, as well as some losers, but on the whole, the experience has been worthwhile and achieved its objective.

Bryant, D.

1996-11-01

210

Copenhagen Sonic Experience Map  

DEFF Research Database (Denmark)

In the wake of present European interest for mapping urban noise, it seems increasingly relevant to investigate the multiple ways in which sound intersects with the everyday experiences of urban citizens. Focusing on the polluting effects of infrastructural noise, the EU-initiated project of assessment and management of environmental noise brings forth the disturbing and potentially damaging effect of environmental sound.1 But as maps of coloured streets start to circulate, and real estate prices drop in designated blue and red areas,2 it is worth remembering that sound itself is not a killer. Most of the time sound is a trivial part of everyday life involved in interactions, experiences, atmospheres, actions, etc. Although trivial, the role of the aural in the urban life world is more complex than what is suggested by sound level maps, and as such it may be a vital part of urbanity itself. The challenge for planners, designers, and architects is to deal with the auditory not only as pollution but also as an integrated part of urban experience, promoting fellowship and liveliness as well as distress.

Kreutzfeldt, Jacob

2011-01-01

211

Digital Heritage Experiences  

DEFF Research Database (Denmark)

The evolution of the Web and the expansion of social media are transforming our heritage experiences. Social media offer an innovative element to personal travel reflections by providing digital global platforms on which tourists can create and publish their travel stories. Social media transform the traditional creative processes, distribution mechanisms and consumption patterns of these experiences. This study provides insight on how personal heritage moments are constructed, digitalized and shared. The methodological perspective adopted draws on a constructivist epistemology (Markham 2004) and netnography (Kozinets, 2002). The social media platform analysed is TripAdvisor, which is the largest networking site focusing on tourism and travel. Study findings indicate that while heritage sites tend to promote their uniqueness and the cultural value of their products, tourists are just as concerned about sensory impressions, imagination, practical issues and personal comfort in the immediate moment as they are about historical and cultural details. Social media provide the technological tools and platforms to communicate and share tourism imaginations, feelings and practical tips. The analysis discusses virtual tourism culture and also generic tourist interests characterized by sensuality, cultural jointaffirmation and immediacy of the experience.

Munar, Ana Maria; Ooi, Can-Seng

212

Kolar Gold Field experiment  

Energy Technology Data Exchange (ETDEWEB)

Meson theory was propounded to explain the nuclear force which holds neutrons and protons inside the nucleus. Subsequently, quark theory was put forward to bring some order into an enormously large number of fundamental particles discovered in the hadron family. These two theories are briefly explained. The gravitational force, the electromagnetic force, the weak nuclear force and the strong nuclear force are the basic forces which determine the behaviour of fundamental particles when they are in close proximity. If the last three of the above-mentioned four forces are one or just different aspects of a single force, quarks and leptons can be mingled in the same theoretical framework indicating the non-conservation of baryon number and the spontaneous decay of the proton into leptons. In order to test the last possibility i.e. proton decay, an experiment has been set up in the Kolar Gold Field at a depth of 2300 metres in India. 1650 gas proportional counters are sandwiched between iron plates. The total amount of iron in the form of iron plates and walls of the counters is 140 tons. In this experiment, nuclei of iron are serving as the source of protons and neutrons and the depth eliminates the background events which mimic proton decay. The amount of iron used in the experiment i.e. 140 tons is more than enough to obtain evidence of 10 proton decay events in a year, assuming that the lifetime of proton is 10/sup 30/ years or below.

Sreekantan, B.V. (Tata Inst. of Fundamental Research, Bombay (India))

1982-01-01

213

AGS Experiments: 1989, 1990, 1991  

Energy Technology Data Exchange (ETDEWEB)

This report contains: Experimental areas layout; table of beam parameters and fluxes; experiment schedule ``as run``; proposed 1992 schedule; a listing of experiments by number; two-page summaries of each experiment begin here, also ordered by number; publications of AGS Experiments begin here; and list of AGS Experimenters begins here.

Depken, J.C.

1992-02-01

214

AGS Experiments: 1989, 1990, 1991  

Energy Technology Data Exchange (ETDEWEB)

This report contains: Experimental areas layout; table of beam parameters and fluxes; experiment schedule as run''; proposed 1992 schedule; a listing of experiments by number; two-page summaries of each experiment begin here, also ordered by number; publications of AGS Experiments begin here; and list of AGS Experimenters begins here.

Depken, J.C.

1992-02-01

215

Polarized target experiments in Bonn  

International Nuclear Information System (INIS)

Spin effects are investigated using polarized target experiments at the Bonn stretcher ring ELSA. Two examples of polarized target experiments are presented: the target asymmetry measurement of pion photoproduction on nucleons, and deuteron photodisintegration. Some experimental aspects of polarized target experiments are discussed, and an experiment with the PHOENICS detection system is described. (R.P.) 13 refs., 8 figs.

1990-01-01

216

AGS experiments - 1982, 1983, 1984  

International Nuclear Information System (INIS)

The report contains layouts of experimental areas, a table of beam parameters and fluxes, the experiment schedule as run, the experiment long range schedule, a listing of experiments by number, and a section of two-page summaries of each experiment.

1983-01-01

217

Aesthetic Experience and Aesthetic Analysis  

Science.gov (United States)

|The "raw data" that aesthetics is meant to explain is the aesthetic experience. People have experiences that they class off from other experiences and label, as a class, the aesthetic ones. Aesthetic experience is basic, and all other things aesthetic--aesthetic properties, aesthetic objects, aesthetic attitudes--are secondary in their importance…

Fenner, David E. W.

2003-01-01

218

Teaching fractional factorial experiments via course delegate designed experiments.  

UK PubMed Central (United Kingdom)

Industrial experiments are fundamental in enhancing the understanding and knowledge of a process and product behavior. Designed industrial experiments assist people in understanding, investigating, and improving their processes. The purpose of a designed experiment is to understand which factors might influence the process output and then to determine those factor settings that optimize the process output. Teaching "design of experiments" using textbook examples does not fully shed light on how to identify and formulate the problem, identify factors, and determine the performance of the physical experiment. Presented here is an example of how to teach fractional factorial experiments in a course on designed experiments. Also presented is a practical, hands-on experiment that has been found to be extremely successful in instilling confidence and motivation in course delegates. The experiment provides a great stimulus to the delegates for the application of experimental design in their own work environment.

Coleman S; Antony J

1999-01-01

219

Analysis of KATS experiments  

International Nuclear Information System (INIS)

[en] In many applications the cooling process will lead to variable flow properties, e. g. variable viscosity and, consequently, to a coupled system of the temperature and flow equations. It is impossible to satisfactorily treat this problem analytically. The lubrication approximation leads to an equation for which similarity solutions for various conditions have been found by many authors (Zel'dovich and Kompaneets, 1950; Sakimoto, 1995; Huppert, 1982; Foit, 1997). Bercovici (1994) developed a model for an axisymmetric gravity current which accounts for thermoviscous effects, i. e., the spatial variation of the viscosity. The numerical results showed significant deviations from the similarity profiles of the constant viscosity (Huppert, 1982) as well as the time-dependent viscosity (Foit, 1997) case. A variety of experiments have been carried out to determine the effects of cooling on the flow of fluids with different properties. The influence of the crust formation rates on the fluid flow was explored experimentally by Fink and Griffiths (1993) with the aim of understanding and classifying small-scale flow surface morphology for a fluid with weakly temperature dependent viscosity (polythylene glycol 600). This study indicated that a crust does not greatly affect the fluid flow except for very high crust formation rates. Experiments which used a fluid with strongly temperature dependent viscosity (glucose syrup) were performed by M. V. Stasluk et al. (1993). In this case the cold, viscous fluid accumulated at the leading edge, altering the flow shape and thickness and slowing the spreading. The front became steeper and the surface behind the front was nearly horizontal. All performed experiments evolved to a stage at which the overall spreading behaviour of the flow can be approximated by a constant bulk viscosity. (orig.)

2001-01-01

220

Analysis of KATS experiments  

Energy Technology Data Exchange (ETDEWEB)

In many applications the cooling process will lead to variable flow properties, e. g. variable viscosity and, consequently, to a coupled system of the temperature and flow equations. It is impossible to satisfactorily treat this problem analytically. The lubrication approximation leads to an equation for which similarity solutions for various conditions have been found by many authors (Zel'dovich and Kompaneets, 1950; Sakimoto, 1995; Huppert, 1982; Foit, 1997). Bercovici (1994) developed a model for an axisymmetric gravity current which accounts for thermoviscous effects, i. e., the spatial variation of the viscosity. The numerical results showed significant deviations from the similarity profiles of the constant viscosity (Huppert, 1982) as well as the time-dependent viscosity (Foit, 1997) case. A variety of experiments have been carried out to determine the effects of cooling on the flow of fluids with different properties. The influence of the crust formation rates on the fluid flow was explored experimentally by Fink and Griffiths (1993) with the aim of understanding and classifying small-scale flow surface morphology for a fluid with weakly temperature dependent viscosity (polythylene glycol 600). This study indicated that a crust does not greatly affect the fluid flow except for very high crust formation rates. Experiments which used a fluid with strongly temperature dependent viscosity (glucose syrup) were performed by M. V. Stasluk et al. (1993). In this case the cold, viscous fluid accumulated at the leading edge, altering the flow shape and thickness and slowing the spreading. The front became steeper and the surface behind the front was nearly horizontal. All performed experiments evolved to a stage at which the overall spreading behaviour of the flow can be approximated by a constant bulk viscosity. (orig.)

Foit, J.J. [Forschungszentrum Karlsruhe GmbH Technik und Umwelt (Germany)

2001-07-01

 
 
 
 
221

APT radionuclide production experiment  

Energy Technology Data Exchange (ETDEWEB)

Tritium ({sup 3}H, a heavy isotope of hydrogen) is produced by low energy neutron-induced reactions on various elements. One such reaction is n+{sup 3}He {yields}>{sup 3}H+{sup 1}H in which {sup 3}He is transmuted to tritium. Another reaction, which has been used in reactor production of tritium, is the n+{sup 6}Li {yields}> {sup 3}H+{sup 4}He reaction. Accelerator Production of Tritium relies on a high-energy proton beam to produce these neutrons using the spallation reaction, in which high-energy proton beam to produce these neutrons using the spallation reaction, in which high-energy protons reacting with a heavy nucleus produce a shower of low-energy neutrons and a lower-mass residual nucleus. It is important to quantify the residual radionuclides produced in the spallation target for two reasons. From an engineering point of view, one must understand short-lived isotopes that may contribute to decay heat. From a safety viewpoint, one must understand what nuclei and decay gammas are produced in order to design adequate shielding, to estimate ultimate waste disposal problems, and to predict possible effects due to accidental dispersion during operation. The authors have performed an experiment to measure the production of radioisotopes in stopping-length W and Pb targets irradiated by a 800 MeV proton beam, and are comparing the results to values obtained from calculations using LAHET and MCNP. The experiment was designed to pay particular attention to the short half-life radionuclides, which have not been previously measured. In the following, they present details of the experiment, explain how they analyzed the data and obtain the results, how they perform the calculations, and finally, how the experimental data agree with the calculations.

Ullmann, J.L.; Gavron, A.; King, J.D. [and others

1994-07-02

222

Multiwell experiment: Overview  

Energy Technology Data Exchange (ETDEWEB)

This field laboratory has been established about 7 mi southwest of Rifle, Colorado. Here the Mesaverde formation lies at a depth of 4000 to 8250 ft. This interval contains different, distinct reservoir types depending upon their depositional environments. These different zones serve as the focus of the various testing and stimulation programs. One key to the Multiwell Experiment is three closely spaced wells. Their 110 to 215 ft separation at depth is less than the nominal dimensions of the lenses in the area. Core, log, well testing, and well-to-well seismic data are providing a far better definition of the geological setting than has been available previously. Comprehensive logging and core analysis programs were conducted. The closely spaced wells also allow interference and tracer tests to obtain in situ reservoir parameters. The vertical variation of in situ stress throughout the intervals of interest is being measured. A series of stimulation experiments is being conducted in one well and the other two wells are being used as observation wells for improved fracture diagnostics and well testing. Another key to achieving the Multiwell Experiment objectives is the synergism resulting from a broad spectrum of activities: geophysical surveys, sedimentological studies, core and log analyses, well testing, in situ stress determination, stimulation, fracture diagnostics, and reservoir analyses. The results from the various activities will define the reservoir and the hydraulic fracture. These, in turn, define the net pay stimulated: the intersection of a hydraulic fracture of known geometry with a reservoir of known morphology and properties. These definitions are further enhanced by the fact that most data will come from closely spaced wells. Thus, spatial variations in reservoir properties can be quantified. 10 refs.

Lorenz, J.C.; Sattler, A.R.; Warpinski, N.R.; Thorne, B.J.; Branagan, P.T.

1987-01-01

223

Simulation - modeling - experiment  

International Nuclear Information System (INIS)

After two workshops held in 2001 on the same topics, and in order to make a status of the advances in the domain of simulation and measurements, the main goals proposed for this workshop are: the presentation of the state-of-the-art of tools, methods and experiments in the domains of interest of the Gedepeon research group, the exchange of information about the possibilities of use of computer codes and facilities, about the understanding of physical and chemical phenomena, and about development and experiment needs. This document gathers 18 presentations (slides) among the 19 given at this workshop and dealing with: the deterministic and stochastic codes in reactor physics (Rimpault G.); MURE: an evolution code coupled with MCNP (Meplan O.); neutronic calculation of future reactors at EdF (Lecarpentier D.); advance status of the MCNP/TRIO-U neutronic/thermal-hydraulics coupling (Nuttin A.); the FLICA4/TRIPOLI4 thermal-hydraulics/neutronics coupling (Aniel S.); methods of disturbances and sensitivity analysis of nuclear data in reactor physics, application to VENUS-2 experimental reactor (Bidaud A.); modeling for the reliability improvement of an ADS accelerator (Biarotte J.L.); residual gas compensation of the space charge of intense beams (Ben Ismail A.); experimental determination and numerical modeling of phase equilibrium diagrams of interest in nuclear applications (Gachon J.C.); modeling of irradiation effects (Barbu A.); elastic limit and irradiation damage in Fe-Cr alloys: simulation and experiment (Pontikis V.); experimental measurements of spallation residues, comparison with Monte-Carlo simulation codes (Fallot M.); the spallation target-reactor coupling (Rimpault G.); tools and data (Grouiller J.P.); models in high energy transport codes: status and perspective (Leray S.); other ways of investigation for spallation (Audoin L.); neutrons and light particles production at intermediate energies (20-200 MeV) with iron, lead and uranium targets (Le Colley F.R.); nuclear data for transmutation (Noguere G.). (J.S.)

2004-01-01

224

Experience in monitoring valves  

Energy Technology Data Exchange (ETDEWEB)

To ensure the best possible monitoring, the user of valves should, from the time of ordering, give thought to the testing that is going to be done during actual operation of the valves. Consideration should be given to the testability of the welded joints, suitable physical shape, repairability, heat treatability of alloy components and should, as far as possible, exert influence to provide the necessary prerequisites. The experience a user of conventional power plant facilities has gained in the monitoring of valves is given. Possible failures are described by way of a number of examples.

Arnswald, W.

1982-08-01

225

The OPERA experiment  

Energy Technology Data Exchange (ETDEWEB)

OPERA is a neutrino oscillation experiment designed to perform a {nu}{sub {tau}} appearance search in the future CNGS beam from CERN to Gran Sasso. The identification of the {tau} lepton produced by a CC {nu}{sub {tau}} interaction is based on the use of the nuclear emulsion technique. The OPERA detector is presently under construction in the Gran Sasso underground laboratory, 730 km from CERN, and will receive its first neutrinos in 2006. The experimental technique is reviewed and the development of the project described. Foreseen performances in measuring {nu}{sub {tau}} appearance and also in searching for {nu}{sub e} appearance are discussed.

Gustavino, Carlo [INFN, Laboratori Nazionali del Gran Sasso, Assergi (Italy)

2006-05-15

226

The OPERA experiment  

International Nuclear Information System (INIS)

OPERA is a neutrino oscillation experiment designed to perform a ?? appearance search in the future CNGS beam from CERN to Gran Sasso. The identification of the ? lepton produced by a CC ?? interaction is based on the use of the nuclear emulsion technique. The OPERA detector is presently under construction in the Gran Sasso underground laboratory, 730 km from CERN, and will receive its first neutrinos in 2006. The experimental technique is reviewed and the development of the project described. Foreseen performances in measuring ?? appearance and also in searching for ?e appearance are discussed.

2006-01-01

227

Muller Lyer Experiment  

Science.gov (United States)

This is the entry page for the Muller Lyer Experiment. The study contained in this collection is a variation of the original Müller-Lyer illusion, one which enables investigators to study the effect of changes in fin angle on the apparent length of lines. Participants in the study are presented with two lines, as in the standard Müller-Lyer presentation, but one of the lines has fins and one does not. The participant's task is to adjust the plain line (without fins) to make the lengths the same.

228

Scyllac feedback stabilization experiments  

International Nuclear Information System (INIS)

For feedback stabilization experiments the magnetic field in a 1200 sector of the Scyllac torus has been lowered to 17 kG, and the plasma parameters adjusted accordingly to reduce the m = 1 instability growth rates to values which are compatible with the response time of the feedback system. Initial plasma studies have been completed and compared with MHD sharp-boundary theory. Studies of the effectiveness of l = 0 and l = 2 feedback fields are reported. Modifications of the Scyllac feedback stabilization system have resulted in improved reliability, decreased response times, and increased output currents. (auth).

1975-09-09

229

The Malaysia LNG experience  

International Nuclear Information System (INIS)

This paper summarizes the nature of the LNG trade, the essential components and characteristics of an LNG project, and relates the Malaysia LNG experience to project realization with some emphasis on the financial aspects of the project. Twelve offshore lending institutions were involved in the total project loop providing U.S. dollar equivalents of 4.0 billions with interest rates ranging from 5% to 8%. The total project was completed on schedule and within budget except for the ships which got caught in the political development of the Malaysian petroleum industry at that time.

1991-01-01

230

Experiments at FLASH  

International Nuclear Information System (INIS)

[en] FLASH, the free electron laser at DESY in Hamburg, is the first facility of its kind providing intense, femtosecond radiation pulses in the vacuum ultraviolet and soft X-ray range for user experiments. A broad science program has been started in summer 2005 with applications in atomic and molecular physics, cluster physics, the study of warm dense matter and surface dynamics, and diffraction imaging of small structures and biological samples with nanometer resolution. A selection of first experimental results is highlighted in this paper.

2009-03-21

231

The OLYMPUS experiment  

Science.gov (United States)

OLYMPUS is an experiment mounted by an international collaboration at DESY, Hamburg, Germany to provide a +/-1% measurement of the cross section ratio of positron-proton to electron-proton elastic scattering in the range 0.6 < Q2 < 2.2 (GeV/c)2. The goal is to provide a definitive experimental verification of the generally accepted explanation of the discrepancy between cross-section and recoil polarization techniques in determination of the form factor ratio GEp(Q2)/GMp(Q2).

Milner, Richard G.; OLYMPUS Collaboration

2012-04-01

232

Neutralized transport experiment  

International Nuclear Information System (INIS)

Experimental details on providing active neutralization of high brightness ion beam have been demonstrated for Heavy Ion Fusion program. A K+ beam was extracted from a variable-perveance injector and transported through 2.4 m long quadrupole lattice for final focusing. Neutralization was provided by a localized cathode arc plasma plug and a RF volume plasma system. Effects of beam perveance, emittance, convergence focusing angle, and axial focusing position on neutralization have been investigated. Good agreement has been observed with theory and experiment throughout the study.

2005-05-21

233

Proteins in the experiment  

International Nuclear Information System (INIS)

[en] The backbone of ferredoxin and hemoproteins are described by SAWs in two and three dimensions. But the spin-lattice relaxation process of Fsub(e)3+ ions cannot be described by pure fractal model. The spectral dimensions observed in experiment is defined through dsub(s)=dsub(f)/a, a is given by the scaling form of the low frequency mode ?(bL)=bsup(a)?(L) of the whole system consisting of proteins and the solvent upon a change of the length scale. (author)

1985-01-01

234

Experiments at FLASH  

Energy Technology Data Exchange (ETDEWEB)

FLASH, the free electron laser at DESY in Hamburg, is the first facility of its kind providing intense, femtosecond radiation pulses in the vacuum ultraviolet and soft X-ray range for user experiments. A broad science program has been started in summer 2005 with applications in atomic and molecular physics, cluster physics, the study of warm dense matter and surface dynamics, and diffraction imaging of small structures and biological samples with nanometer resolution. A selection of first experimental results is highlighted in this paper.

Bostedt, Christoph [Institut fuer Optik und Atomare Physik, Technische Universitaet Berlin, Hardenbergstrasse 36, 10623 Berlin (Germany); Chapman, Henry N. [Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg (Germany); Universitaet Hamburg, 22607 Hamburg (Germany); Costello, John T. [National Center for Plasma Science and Technology and School of Physical Sciences, Dublin City University, Dublin (Ireland); Crespo Lopez-Urrutia, Jose R. [Max-Planck-Institut fuer Kernphysik, Saupfercheckweg 1, 69117 Heidelberg (Germany); Duesterer, Stefan [Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg (Germany); Epp, Sascha W. [Max-Planck-Institut fuer Kernphysik, Saupfercheckweg 1, 69117 Heidelberg (Germany); Feldhaus, Josef [Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg (Germany)], E-mail: josef.feldhaus@desy.de; Foehlisch, Alexander [Universitaet Hamburg, 22607 Hamburg (Germany); Meyer, Michael [LIXAM/CNRS, Centre Universitaire Paris-Sud, Batiment 350, F-91405 Orsay Cedex (France); Moeller, Thomas [Institut fuer Optik und Atomare Physik, Technische Universitaet Berlin, Hardenbergstrasse 36, 10623 Berlin (Germany); Moshammer, Robert [Max-Planck-Institut fuer Kernphysik, Saupfercheckweg 1, 69117 Heidelberg (Germany); Richter, Mathias [Physikalisch-Technische Bundesanstalt, Abbestrasse 2-12, 10587 Berlin (Germany); Sokolowski-Tinten, Klaus [Institut fuer Experimentelle Physik, Universitaet Duisberg-Essen, 45117 Essen (Germany); Sorokin, Andrei [Physikalisch-Technische Bundesanstalt, Abbestrasse 2-12, 10587 Berlin (Germany); Tiedtke, Kai [Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg (Germany); Ullrich, Joachim [Max-Planck-Institut fuer Kernphysik, Saupfercheckweg 1, 69117 Heidelberg (Germany); Wurth, Wilfried [Universitaet Hamburg, 22607 Hamburg (Germany)

2009-03-21

235

Fundamental Experiments in Velocimetry  

Science.gov (United States)

One can understand what velocimetry does and does not measure by understanding a few fundamental experiments. Photon Doppler Velocimetry (PDV) is an interferometer that will produce fringe shifts when the length of one of the legs changes, so we might expect the fringes to change whenever the distance from the probe to the target changes. However, by making PDV measurements of tilted moving surfaces, we have shown that fringe shifts from diffuse surfaces are actually measured only from the changes caused by the component of velocity along the beam. This is an important simplification in the interpretation of PDV results, arising because surface roughness randomizes the scattered phases.

Briggs, Matthew; Holtkamp, David; Hull, Larry; Shinas, Michael

2009-06-01

236

Distribution Generation: US experience  

Energy Technology Data Exchange (ETDEWEB)

The experiences of the Citizens Power and Light Corporation in the United States of America (US) were described. The impact of deregulation on distributed generation was discussed. Factors which contribute to win-win cogeneration projects were enumerated. These factors included short-term and long-term gas prices, third party financing arrangements, good system policy, incremental self-generation development, utility support for reserve and backup power, facilitation of economic development of industrial generators, and developing the capability for wheeling. The emphasis on developing distributed generation with distributed suppliers/customers was considered to be absolutely essential to the utility`s success and profitability.

Huggins, M.J.

1995-12-31

237

Network Simulation Experiments Manual  

CERN Multimedia

Networking technologies and concepts are often difficult to explain, even through careful description and well thought out examples. One method for making this information "stick" is to create an environment where networking professionals and students can visualize how networks work by utilizing a software tool that simulates the functions within a network. The tool provides a virtual environment for an assortment of desirable features such as modeling a network based on specified criteria and predicting its performance. The Network Simulation Experiments Manual takes this instructional tool a

Aboelela, Emad

2011-01-01

238

Installation for rewetting experiments  

International Nuclear Information System (INIS)

A test facility for rewetting experiments (ITR), has been erected at the Thermalhydraulics Laboratory of Centro de Desenvolvimento da Tecnologia Nuclear (CDTN), with the objective of performing investigation of basic phenomena that occur during the reflood phase of a Loss of Coolant Accident (LOCA), in a Pressurized Water Reactor (PWR), utilizing tubular and annular test sections. The mechanical aspects of the facility, its power supply system and its instrumentation are described. The results of the calibration of the instruments and the description of two typical testes performed to verify the operational conditions are presented. A comparison with calculations using a computer code is also presented. (Author)

1986-01-01

239

The Quijote CMB Experiment  

CERN Multimedia

We present the current status of the QUIJOTE (Q-U-I JOint TEnerife) CMB Experiment, a new instrument which will start operations early 2009 at Teide Observatory, with the aim of characterizing the polarization of the CMB and other processes of galactic and extragalactic emission in the frequency range 10-30 GHz and at large angular scales. QUIJOTE will be a valuable complement at low frequencies for the PLANCK mission, and will have the required sensitivity to detect a primordial gravitational-wave component if the tensor-to-scalar ratio is larger than r=0.05.

Rubiño-Martín, J A; Tucci, M; Genova-Santos, R; Hildebrandt, S R; Hoyland, R; Herreros, J M; Gomez-Renasco, F; Caraballo, C Lopez; Martínez-González, E; Vielva, P; Herranz, D; Casas, F J; Artal, E; Aja, B; de la Fuente, L; Cano, J L; Villa, E; Mediavilla, A; Pascual, J P; Piccirillo, L; Maffei, B; Pisano, G; Watson, R A; Davis, R; Davies, R; Battye, R; Saunders, R; Grainge, K; Scott, P; Hobson, M; Lasenby, A; Murga, G; Gómez, C; Gómez, A; Arino, J; Sanquirce, R; Pan, J; Vizcarguenaga, A; Etxeita, B

2008-01-01

240

Results of railgun experiments  

Energy Technology Data Exchange (ETDEWEB)

During the 1979 Megagauss II conference the hypervelocity potential of railguns and the pulsed power technology needed to power them were discussed. Since then, many laboratories have initiated railgun R and D projects for a variety of potential applications. Los Alamos and Lawrence Livermore National Laboratories initiated a collaborative experimental railgun project which resulted in several successes in accelerating projectiles to high velocities, emphasized the limits on railgun operation, and indicated that the numerical modeling of railgun operation was in good agreement with the experiments.

Hawke, R.S.; Brooks, A.L.; Fowler, C.M.; Peterson, D.R.

1983-04-01

 
 
 
 
241

Is experience overrated?  

UK PubMed Central (United Kingdom)

Major transitions and transformations are in our future as we begin to implement the various changes in the new health care reform environment. New programs developed with old thinking and leaders who have filtered their thinking through previous models will not be successful. We need people with a variety of experience to help us see our way through the new forest of health care reform--many of those could be outsiders. Outsiders can be very successful if health care leaders can be open to different and successful models that have been effective elsewhere. e must find these people and successfully recruit them to our organizations.

Kerfoot KM

2013-01-01

242

Literature on photoproduction experiments  

International Nuclear Information System (INIS)

[en] Literature on gamma-proton, gamma-neutron, gamma-deuteron, gamma-nucleus experiments, inclusive photoproduction, particle yields in gamma-proton and gamma-nucleus, inelastic compton scattering, search for new particles, Primakoff effect, photofission, and QED-tests are compiled. (BJ)[de] Die Literatur ueber Gamma-Proton, Gamma-Neutron, Gamma-Deuteron, Gamma-Atomkern-Experimente, inklusive Photoproduktion, Teilchenausbrueten bei Gamma-Proton und Gamma-Atomkern-Reaktionen, inelastische Comptonstreuung, die Suche nach neuen Teilchen, den Primakoff Effekt, die Photospaltung und Tests der QED wurde zusammengestellt. (BJ)

1975-01-01

243

French experience with electropolishing  

International Nuclear Information System (INIS)

Following the results obtained in CHINON B1 comparing deposited activity observed on different surface finishes EDF decided to electropolish steam generator channel heads (S.G.C.H.) in order to reduce operator dose during plant maintenance. The qualification tests were performed on steam generator materials (Inconel 600 and S.S. 308 L) with the full on site operational equipment (i.e. a sealed sucker). In 1988 the 4 SGCH of NOGENT 2 were electropolished. In 1990 we observed a dose rate reduction of 45% at NOGENT 2 compared to NOGENT 1. Other French experience is electropolishing of 27 S.G.C.H., since 1988. (author)

1992-01-01

244

Experiments on Superheavy Elements  

Science.gov (United States)

An overview of present experimental investigation of superheavy elements is given. Using cold fusion reactions which are based on lead and bismuth targets, relatively neutron deficient isotopes of the elements from 107 to 113 were synthesized at GSI in Darmstadt, Germany, and/or at RIKEN in Wako, Japan. In hot fusion reactions of 48Ca projectiles with actinide targets more neutron rich isotopes of the elements from 112 to 116 and even 118 were produced at FLNR in Dubna, Russia. Recently, part of these data which represent the first identification of nuclei located on the predicted island of SHEs were confirmed in two independent experiments. The data are compared with theoretical descriptions.

Hofmann, Sigurd

245

Results of railgun experiments  

International Nuclear Information System (INIS)

During the 1979 Megagauss II conference the hypervelocity potential of railguns and the pulsed power technology needed to power them were discussed. Since then, many laboratories have initiated railgun R and D projects for a variety of potential applications. Los Alamos and Lawrence Livermore National Laboratories initiated a collaborative experimental railgun project which resulted in several successes in accelerating projectiles to high velocities, emphasized the limits on railgun operation, and indicated that the numerical modeling of railgun operation was in good agreement with the experiments

1983-01-01

246

On color transparency experiments  

Energy Technology Data Exchange (ETDEWEB)

We argue in this work that significant ambiguities exist with respect to the ([ital e],[ital e][prime][ital p]) reaction mechanism. This is based on an analysis of the systematic behavior with [ital Q][sup 2] and opening angle of new and existing ([ital e],[ital e][prime][ital p]) data. The analysis implies a consequent uncertainty in the interpretation of color transparency experiments that integrate over a large ([approx gt]50 MeV) missing energy range.

Lourie, R.W. (Institute of Nuclear and Particle Physics, Department of Physics, University of Virginia, Charlottesville, Virginia 22901 (United States)); Bertozzi, W.; Morrison, J.; Weinstein, L.B. (Laboratory for Nuclear Science, Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 01239 (United States))

1993-02-01

247

The CUORE experiment  

International Nuclear Information System (INIS)

The CUORE (Cryogenic Underground Observatory for Rare Events) experiment will be composed by one thousand TeO2 absorbers of 5x5x5 cm3 to be operated in the Gran Sasso Underground Laboratory. CUORICINO, a reduced version of CUORE, as been already approved and funded and will be in operation since the beginning of next year. A description of the CUORE setup, of the mechanical structure and of the single detector performances is shown. The physics goals of CUORE are illustrated

2002-02-05

248

Experiments with Data Layouts  

UK PubMed Central (United Kingdom)

this paper. lopt versions are obtained by either applying Li's locality optimizationapproach [18] to the program, or allowing the native compiler to derive the best order.In the experiments on multiple nodes, where possible, the coarsest granularity of parallelism is exploitedfor all versions. In fact, for row, col and dopt versions the same loops are parallelized; therefore the degreeof parallelism is the same. The degree of parallelism for lopt is either the same as or better than the otherversions.1.2 Platforms

A. Choudhary; N. Shenoy; P. Banerjee; J. Ramanujam

249

Survey of Tokamak experiments  

International Nuclear Information System (INIS)

The survey covers the following topics:- Introduction and history of tokamak research; review of tokamak apparatus, existing and planned; remarks on measurement techniques and their limitations; main results in terms of electron and ion temperatures, plasma density, containment times, etc. Empirical scaling; range of operating densities; impurities, origin, behaviour and control (including divertors); data on fluctuations and instabilities in tokamak plasmas; data on disruptive instabilities; experiments on shaped cross-sections; present experimental evidence on ? limits; auxiliary heating; experimental and theoretical problems for the future. (author)

1977-01-01

250

Postmenopausal osteoporosis: Our experience.  

UK PubMed Central (United Kingdom)

INTRODUCTION: There is very little published literature about experience with osteoporosis treatment from our country. MATERIALS AND METHODS: It is a retrospective analysis of first 50 patients enrolled in our clinic for osteoporosis. Postmenopausal women with T score of less than -2.5 or history suggestive fragility fracture with supportive bone mineral density (BMD) were included. Patients having hypercalcemia, abnormal renal function, myeloma and on long-term steroids were also excluded. RESULTS: Nearly 34% subjects were below the age of 60 years, 47% of subjects were between 60 and 70 years, whereas 18% were above 70 years. Nearly 6% had family history of osteoporosis s or history of osteoporotic fractures. Nearly 20% subjects had fracture prior to starting of any treatment. A total of 86% (40/46) had evidence of Vitamin D (VD) deficiency. Nearly 80% of patients were treated with bisphosphonates, 12% were treated with injectable bisphosphonates, and 8% were treated with teriperatide. Nearly 16% patients had duration of more than 5 years of experience with bisphosphonates. Follow up BMD was available in 25 subjects. BMD had improved significantly in 68% of subjects. In 24% the BMD was stable (the change was less than least significant change (LSC)). In 8% BMD had shown a significant decline while being on treatment. CONCLUSION: Postmenopausal osteoporosis occurs in relatively younger women in our country. Majority of them are VD deficient. Oral bisphosphonates is the most common used drug; it is fairly well tolerated and effective.

Mehrotra RN; Ranjan A; Lath R; Ratnam R

2012-12-01

251

The Aespoe TRUE experiments  

International Nuclear Information System (INIS)

SKB's concept on deep geological disposal of spent nuclear fuel is based on a multi-barrier system for isolation of the spent fuel from the biosphere. The barriers are a low-solubility waste form, encapsulation of the fuel in a copper canister, a bentonite buffer surrounding the canister, and the host rock. In case of an initial canister damage, the retention capacity of the host rock for the short lived radionuclides such as Cs and Sr is important. For the Operating Phase of the Aespoe Hard Rock Laboratory the need for a better understanding of radionuclide transport and retention processes was recognized. This included enhancement of confidence in models to be used for quantifying transport of sorbing radionuclides in performance assessment. Further, to be able to show that pertinent transport data could be obtained from site characterization or field experiments and that laboratory results could be related to retention parameters obtained in situ. To resolve these issues SKB initiated the Tracer Retention Understanding Experiments (TRUE). (author)

1997-01-01

252

Compact toroid formation experiments  

International Nuclear Information System (INIS)

We present the design and experimental performance of a compact toroid (CT) formation experiment. The device has co-axial electrode diameters of 0.9 m (inner) and 1.25 m (outer), and an electrode length of ? 1.2 m, including an expansion/drift section. The CT is formed by a 0.1--0.2 Tesla initial radial magnetic field embedded co-axial puff gas discharge. The gas puff is injected with an array of 60 pulsed solenoid driven fast valves. The formation discharge is driven by a 108 microfarad, 40 to 100 KV, 86 to 540 kilojoule 2 to 5 megamp capacitor discharge with ? 20 nanohenry initial total discharge inductance. The hardware includes transmission line connections for a Shiva Star (1300 microfarad, up to 120 KV, 0.4 megajoule) capacitor bank driven acceleration discharge. Experimental measurements include current, voltage; azimuthal, radial and axial magnetic field at numerous location; fast photography, optical spectroscopy; microwave, CO2 laser, and He-Ne laser interferometry. Auxiliary experiments include Penning ionization gauge, pressure probe, and breakdown gas trigger diagnostics of gas injection, and Hall probe measurements of magnetic field injection.

1990-01-01

253

Stirling machine operating experience  

Energy Technology Data Exchange (ETDEWEB)

Numerous Stirling machines have been built and operated, but the operating experience of these machines is not well known. It is important to examine this operating experience in detail, because it largely substantiates the claim that stirling machines are capable of reliable and lengthy operating lives. The amount of data that exists is impressive, considering that many of the machines that have been built are developmental machines intended to show proof of concept, and are not expected to operate for lengthy periods of time. Some Stirling machines (typically free-piston machines) achieve long life through non-contact bearings, while other Stirling machines (typically kinematic) have achieved long operating lives through regular seal and bearing replacements. In addition to engine and system testing, life testing of critical components is also considered. The record in this paper is not complete, due to the reluctance of some organizations to release operational data and because several organizations were not contacted. The authors intend to repeat this assessment in three years, hoping for even greater participation.

Ross, B. [Stirling Technology Co., Richland, WA (United States); Dudenhoefer, J.E. [Lewis Research Center, Cleveland, OH (United States)

1994-09-01

254

The OLYMPUS Experiment Simulation  

Science.gov (United States)

The OLYMPUS Experiment aims to measure the ratio of electron-proton to positron-proton elastic scattering cross-sections to better than 1% systematic uncertainty. Achieving this goal requires a precise understanding of a wide range of systematic effects, such as the radiative corrections internal to the reaction, the varying acceptance of the detector aparatus, and efficiency of the tracking algorithms. A detailed Geant4 simulation of the OLYMPUS experiment has been developed to study these effects, and using the Monte Carlo method, properly account for their convolution. Radiative corrections are applied by the event generator, whose events are propagated through the simulation. Simulated detector signals are produced with identical format to the raw OLYMPUS data, so that simulated data can be processed using the same analysis software. The simulation, therefore, serves as a benchmark for comparison with the final OLYMPUS results. A discussion of the radiative corrections procedure and an overview of the simulation will be presented. This work is supported by DOE Grant DE-FG02-94ER40818.

Schmidt, Axel

2013-04-01

255

Exporting the hydro experience  

Energy Technology Data Exchange (ETDEWEB)

Energy needs in developing countries throughout the world are expanding at a rate more than double that of the US. Not only is there a growing need for reliable sources of energy in developing countries, but the trend in these capital-poor countries is to build the legal framework to allow for private development. This situation provides hydropower industry organizations with unique opportunities for exporting their knowledge and experience to develop small-scale hydropower projects. The experience of the American hydro industry with small-scale facilities, financed by private entities and backed by the project itself, is definitely an [open quotes]exportable product.[close quotes] However, the road getting there is not a smooth one. As American hydro companies look at exporting their ideas and expertise, they should be aware that exporting any commodity -- including expertise in hydro development -- is a long-term proposition and requires a long-term commitment. Fifty successful exporters polled by Business America magazine in 1990 said the keys to exporting are making a commitment and sticking with it; recognizing exporting as a full-time responsibility and devoting full attention to it; and perseverance.

Rogers, W.L.; Bourgeacq, J.P. (Synergics, Inc., Annapolis, MD (United States))

1992-06-01

256

The VIP experiment  

International Nuclear Information System (INIS)

[en] The Pauli Exclusion Principle (PEP) is a basic principle of Quantum Mechanics and its validity has never been seriously challenged. However, given its significance, it is very important to check it as thoroughly as possible. The recently approved VIP (VIolation of Pauli Exclusion Principle) experiment represents an improved version of the Ramberg and Snow experiment (Ramberg and Snow, Phys. Lett. B238 (1990) 438). VIP will be performed at the Gran Sasso underground laboratories (Italy), and aims to test the Pauli Exclusion Principle for electrons with unprecedented accuracy. It uses an apparatus with CCDs (Charge Coupled Device) as detectors of X-rays, looking for PEP violating transitions in cooper: transitions from the 2p level to 1s with the 1s already occupied by 2 electrons. The characteristic of such transition is its energy - displaced with respect to the normal 2p ? 1s one by about 300 eV. VIP will bring the limit on the probability that PEP is violated by electrons to 10-30, four orders of magnitude better than the present limit, exploring so a region where new theories might allow for possible PEP violation. (authors)

2005-01-01

257

The VIP Experiment  

International Nuclear Information System (INIS)

[en] The Pauli Exclusion Principle (PEP) is a basic principle of Quantum Mechanics, and its validity has never been seriously challenged. However, given its importance, it is very important to check it as thoroughly as possible. The recently approved VIP (VIolation of Pep) experiment, represents an improved version of the Ramberg and Snow experiment (Ramberg and Snow, Phys. Lett. B238 (1990) 438). VIP shall be performed at the Gran Sasso underground laboratories, and aims to test the Pauli Exclusion Principle for electrons with unprecedented accuracy. VIP is a Collaboration among four Institutions out of three countries (LNF-INFN, and INFN Trieste Italy; SMI-Vienna, Austria; IFIN-HH, Bucharest, Romania). It uses an apparatus with CCDs (Charge Coupled Device) as detectors of X rays - looking for PEP violating transitions in Copper: transitions from the 2p level to 1s with the 1s already occupied by 2 electrons. The characteristic of such transition is the energy - displaced with respect to the normal 2p ? 1s one by about 300 eV. VIP will bring the limit on the probability that PEP is violated by electrons to 10-30, exploring so a region where new theories allow for a possible PEP violation. (authors)

2005-05-27

258

IFR guiding experiments  

International Nuclear Information System (INIS)

We have developed a new technique for electrostatically guiding high-current electron beams in accelerators and for IFR (ion focused regime) propagation experiments. The new method allows transport of IREBs over curved paths for applications in circular accelerators such as Sandia's recirculating linac. This method uses a low-energy electron beam in place of a laser to ionize the channel and thereby allows the use of any background gas desired instead of being restricted to the use of organics with high-photoionization cross sections. A weak longitudinal magnetic field is applied to confine the low-energy beam, enabling one to precisely define the ionization channel. Using this method, we have guided a 1.2 MeV beam with currents exceeding 20 kA over a 3-m straight path. In these experiments with high nu/? beams, we observed the inductive erosion and also studied the effects of ion mass on channel stability. Both effects can be important for accelerator applications. The transport of high-current beams around a 900 bend is described in a companion paper. 8 figs

1985-01-01

259

IFR guiding experiments  

Science.gov (United States)

A new technique was developed for electrostatically guiding high-current electron beams in accelerators and for IFR (ion focused regime) propagation experiments. The new method allows transport of IREEs over curved paths for applications in circular accelerators such as Sandia's recirculating linac. This method uses a low-energy electron beam in place of a laser to ionize the channel and thereby allows the use of any background gas desired instead of being restricted to the use of organics with high-photoionization cross sections. A weak longitudinal magnetic field is applied to confine the low-energy beam, enabling one to precisely define the ionization channel. Using this method, a 1.2 MeV beam with currents exceeding 20 kA was guided over a 3-m straight path. In these experiments with high nu/(GAMMA) beams, the inductive erosion and the effects of ion mass on channel stability were observed. Both effects can be important for accelerator applications.

Frost, C. A.; Shope, S. L.; Kiekel, P. D.; Poukey, J. W.; Ekdahl, C. A.; Miller, R. B.; Godfrey, B. E.; Wright, L. W.; Newberger, B. B.

260

PHOBOS experiment at RHIC  

International Nuclear Information System (INIS)

[en] The study of relativistic heavy nuclei collisions at RHIC opens a new area of physics--the physics of hadronic matter at very high energy densities. The conditions necessary to create a new state of matter, never before seen in the laboratory, may be reached. It gives a chance to study the quantum chromodynamics predictions of the phase transition from hadronic matter to a quark-gluon plasma. The PHOBOS experiment will investigate almost all predicted signals of the QGP formation. General event properties (angular distribution of charged particles, total multiplicity) will be combined with detailed information on particles emitted in the central rapidity region (particle ratios ?/K/p, pt spectra, correlations, ? meson properties). Similar studies will be done also in the other three experiments at RHIC, but there are many important observables for which PHOBOS will provide unique information. The multiplicity detector covers almost a full phase space, recording all charged particles with pseudorapidities |?| ? 5.4. In the PHOBOS spectrometer particles emitted in the central rapidity region will be measured and identified starting from lowest transverse momenta (20 MeV/c for pions). The high rate unbiased trigger gives a chance to see unpredicted phenomena and enables the study of very rare processes that require large statistics. The measurements of the converting photons planned for some runs will be used to study the ?0/(?+ + ?-) ratio in selected phase space intervals

1995-01-01

 
 
 
 
261

The EBEX Experiment  

CERN Multimedia

EBEX is a balloon-borne polarimeter designed to measure the intensity and polarization of the cosmic microwave background radiation. The measurements would probe the inflationary epoch that took place shortly after the big bang and would significantly improve constraints on the values of several cosmological parameters. EBEX is unique in its broad frequency coverage and in its ability to provide critical information about the level of polarized Galactic foregrounds which will be necessary for all future CMB polarization experiments. EBEX consists of a 1.5 m Dragone-type telescope that provides a resolution of less than 8 arcminutes over four focal planes each of 4 degree diffraction limited field of view at frequencies up to 450 GHz. The experiment is designed to accommodate 330 transition edge bolometric detectors per focal plane, for a total of up to 1320 detectors. EBEX will operate with frequency bands centered at 150, 250, 350, and 450 GHz. Polarimetry is achieved with a rotating achromatic half-wave pla...

Oxley, P; Baccigalupi, C; De Bernardis, P; Cho, H M; Devlin, M J; Hanany, S; Johnson, B R; Jones, T; Lee, A T; Matsumura, T; Miller, A D; Milligan, M; Renbarger, T; Spieler, H G; Stompor, R; Tucker, G S; Zaldarriaga, M

2004-01-01

262

Cibola flight experiment  

Energy Technology Data Exchange (ETDEWEB)

Los Alamos National Laboratory is building the Cibola Flight Experiment (CFE), a reconfigurable processor payload intended for a Low Earth Orbit system. It will survey portions of the VHF and UHF radio spectra. The experiment uses networks of reprogrammable, Field Programmable Gate Arrays (FPGAs) to process the received signals for ionospheric and lightning studies. The objective is to validate the on-orbit use of commercial, reconfigurable FPGA technology utilizing several different single-event upset mitigation schemes. It will also detect and measure impulsive events that occur in a complex background. Surrey Satellite Technology, Ltd (SSTL) is building the small host satellite, CFESat, based upon SSTL's disaster monitoring constellation (DMC) and Topsat mission satellite designs. The CFESat satellite will be launched by the Space Test Program in September 2006 on the US Air Force Evolved Expendable Launch Vehicle (EELV) using the EELV's Secondary Payload Adapter (ESPA) that allows up to six small satellites to be launched as 'piggyback' passengers with larger spacecraft.

Roussel-Dupre, D. (Diane); Caffrey, M. P. (Michael Paul)

2004-01-01

263

Experience in open markets  

International Nuclear Information System (INIS)

The topic of discussion in this session was experience in open markets. The session was led by Guido Bachman, President of the Independent Power Producers' Society of Alberta (IPPSA), assisted by panel members Richard Way, Director of Energy Risk Management at TransAlta, John O'Donnell, Professor of Finance at Michigan State University, and Kelly Lail, Manager of Power Acquisition at B.C. Hydro. Way spoke of the experiences with market restructuring in Alberta, describing the consultative and legislative process which determined the structure of the Alberta Power Pool (APP). The Pool began operations in January 1996. Currently there are 33 participants from generators, to distributors and marketers. Supply and demand are managed by APP by setting an hourly price based on offers and bids. Both generators and distributors get the hourly pool price, so the input price and export price of the pool are the same, however, generators and distributors are free to enter into 'contract for difference' agreements. O'Donnell discussed the status of competition in Michigan. He stressed the importance of Ontario to the Michigan market, echoing the conviction of U.S. regulators that a freer economy works better. Kelly Lail spoke of the unbundling of B.C. Hydro into several generating, transmission and distribution companies in preparation for moving from exclusive service to exclusive wholesale competition. He predicted that the fierce competition will lead to a an industry shakeout, leaving only one big (B.C. Hydro) and a few niche players.

1997-01-01

264

[Experience of fibromyalgia].  

UK PubMed Central (United Kingdom)

OBJECTIVE: To show the experience of people suffering from fibromyalgia, through ethnography and narrative, and a reflection to raise and question the direction of professional care. METHODOLOGY: Qualitative, and within this focused ethnography, generating information through participant observation and in-depth interviews with two women and a man suffering from fibromyalgia, with analysis emerging from five units of narrative. RESULTS: Highlight the stress generated in the waiting time to diagnosis and the vital break which means the disease, the difficulty of sharing with family and friends, the conflict with the health system and the limited presence of nurses, the interest to remain active at work and personal life, although tightly constrained by the pain and discomfort, treatment adherence, aid associations representing, and thinking the present and little for the future. CONCLUSIONS: The diagnosis represents a naming an extensive upset while freeing energy of search, the little information that accompanies it difficult to handle the uncertainty and move toward a harmonious adaptation. The affected people follow the prescribed treatment, showing great interest in staying active and their pain or discomfort hamper it, they live intensely the present and think little for the future. Some nurses taking care professional current care models are suitable for individualized care in a chronic and complex illness, and the narrative is a strategy to the knowledge of the illness experience.

Olivé Ferrer MC; Isla Pera MP

2013-07-01

265

[Laparoscopic appendectomy. Our experience].  

UK PubMed Central (United Kingdom)

The advantages and applications of the videolaparoscopic technique (VL) versus open surgery in the treatment of acute and complicated appendicitis are not well defined. Our study examined 150 patients, 67 males and 83 females. They underwent surgery for acute appendicitis in emergency. The choice between open or laparoscopic tecnique was due to patient's clinical conditions and surgeon's experience. Two of these patients had no infiammatory process. Eleven patients were affected by gynaecological diseases. The last 137 patients underwent surgery for acute appendicitis and the diagnosis was confirmed. Among them, 35 (25%) were affected by a complicated appendicitis with diffuse or clearly defined peritonitis. In 134 patients the surgery was completed laparoscopically. The conversion rate was 2%. Morbility rate was 3%, due to intra abdominal abscesses secondary to acute complicated appendicitis. The mean operative time was 76 min and the mean hospital stay was 4.8 days. The death rate was 0%. In our experience, laparoscopic appendectomy has significant advantages over traditional open surgery in both acute and complicated appendicitis, especially in young women. In this way, we can diagnose pelvic disease that could be characterized by the same symptoms of acute appendicitis, then we suggest laparoscopic appendectomy even just to complete the diagnostic iter. Laparoscopy is useful in terms of convalescence, postoperative pain, hospital stay, aesthetic outcome and an easier exploration of the peritoneal cavity.

Pezzolla A; Milella M; Lattarulo S; Barile G; Pascazio B; Ialongo P; Fabiano G; Palasciano N

2012-05-01

266

[Laparoscopic appendectomy. Our experience].  

Science.gov (United States)

The advantages and applications of the videolaparoscopic technique (VL) versus open surgery in the treatment of acute and complicated appendicitis are not well defined. Our study examined 150 patients, 67 males and 83 females. They underwent surgery for acute appendicitis in emergency. The choice between open or laparoscopic tecnique was due to patient's clinical conditions and surgeon's experience. Two of these patients had no infiammatory process. Eleven patients were affected by gynaecological diseases. The last 137 patients underwent surgery for acute appendicitis and the diagnosis was confirmed. Among them, 35 (25%) were affected by a complicated appendicitis with diffuse or clearly defined peritonitis. In 134 patients the surgery was completed laparoscopically. The conversion rate was 2%. Morbility rate was 3%, due to intra abdominal abscesses secondary to acute complicated appendicitis. The mean operative time was 76 min and the mean hospital stay was 4.8 days. The death rate was 0%. In our experience, laparoscopic appendectomy has significant advantages over traditional open surgery in both acute and complicated appendicitis, especially in young women. In this way, we can diagnose pelvic disease that could be characterized by the same symptoms of acute appendicitis, then we suggest laparoscopic appendectomy even just to complete the diagnostic iter. Laparoscopy is useful in terms of convalescence, postoperative pain, hospital stay, aesthetic outcome and an easier exploration of the peritoneal cavity. PMID:22595725

Pezzolla, Angela; Milella, Marialessia; Lattarulo, Serafina; Barile, Graziana; Pascazio, Bianca; Ialongo, Paolo; Fabiano, Gennaro; Palasciano, Nicola

267

Aesthetic experience of dance performances  

Directory of Open Access Journals (Sweden)

Full Text Available In this study the aesthetic experience of dance performances is investigated. The study includes construction of an instrument for measuring the aesthetic experience of dance performances and an investigation of the structure of both dancers’ and spectators’ aesthetic experience. The experiments are carried out during eight different performances of various dance forms, including classical ballet, contemporary dance, flamenco and folklore. Three factors of aesthetic experience of dance performances are identified: Dynamism, Exceptionality and Affective Evaluation. The results show that dancers’ aesthetic experience has a somewhat different factorial structure from that of the spectators’. Unlike spectators’ aesthetic experience, dancers’ aesthetic experience singles out the Excitement factor. The results are discussed within the context of dancers’ proprioception and spectators’ exteroception since these findings confirm the idea of a significant role of proprioception in dancers’ aesthetic experience.

Vukadinovi? Maja; Markovi? Slobodan

2012-01-01

268

Learning from Scarce Experience  

CERN Document Server

Searching the space of policies directly for the optimal policy has been one popular method for solving partially observable reinforcement learning problems. Typically, with each change of the target policy, its value is estimated from the results of following that very policy. This requires a large number of interactions with the environment as different polices are considered. We present a family of algorithms based on likelihood ratio estimation that use data gathered when executing one policy (or collection of policies) to estimate the value of a different policy. The algorithms combine estimation and optimization stages. The former utilizes experience to build a non-parametric representation of an optimized function. The latter performs optimization on this estimate. We show positive empirical results and provide the sample complexity bound.

Peshkin, L M; Peshkin, Leonid; Shelton, Christian R.

2002-01-01

269

Experience in scheduled maintenance  

Energy Technology Data Exchange (ETDEWEB)

As outage management affects both the cost and reliability of a nuclear power plant, performance of a scheduled maintenance outage in an efficient and effective manner is an important task in the operation of nuclear power plant. This paper covers the experience gained in the past ten refueling outages for the two BWR units at the First Nuclear Power Station of Taipower. The key to optimizing both the cost and schedule of a refueling outage is to maintain a high level of quality workmanship. The outage management in planning, scheduling, preparation, coordination, and cooperation, accompanied by the qualified in-house capability and sufficient outside support, have placed the refueling outages at the FNPS in a well controlled situation and have established the capacity factors of these two BWR units at a level which is 20% higher than the world average in the past years.

Tsai, M.T.

1985-01-01

270

The VIP experiment  

International Nuclear Information System (INIS)

The VIP (Violation of the Pauli Exclusion Principle) experiment is dedicated to check the validity of one of the basic principles of modern physics. This investigation is done searching for anomalous X-rays emitted by copper atoms in a conductor: any detection of these anomalous X-rays would mark a Pauli forbidden transition. VIP is currently taking data at the Gran Saso underground laboratories, and its scientific goal is to improve by three-four orders of magnitude the previous limit on the probability of Pauli violating transitions, bringing it into the 10-29 to -30 region. The new experimental results and future plans are presented. The PDF file for this article was corrected and the names and affiliations were amended on 4 September 2009.

2009-09-04

271

Wake field acceleration experiments  

Energy Technology Data Exchange (ETDEWEB)

Where and how will wake field acceleration devices find use for other than, possibly, accelerators for high energy physics. I don't know that this can be responsibly answered at this time. What I can do is describe some recent results from an ongoing experimental program at Argonne which support the idea that wake field techniques and devices are potentially important for future accelerators. Perhaps this will spawn expanded interest and even new ideas for the use of this new technology. The Argonne program, and in particular the Advanced Accelerator Test Facility (AATF), has been reported in several fairly recent papers and reports. But because this is a substantially new audience for the subject, I will include a brief review of the program and the facility before describing experiments. 10 refs., 7 figs.

Simpson, J.D.

1988-01-01

272

Tritium neutrino mass experiments  

Energy Technology Data Exchange (ETDEWEB)

The current status of the experimental search for neutrino mass is reviewed, with emphasis on direct kinematic methods, such as the beta decay of tritium. The situation concerning the electron neutrino mass as measured in tritium beta decay is essentially unchanged from a year ago, although a great deal of experimental work is in progress. The ITEP group continues to find evidence for a nonzero mass, now slightly revised to 26(5) eV. After correcting for recently discovered errors in the energy loss distribution and source thickness, however, the Z/umlt u/rich group still claims and upper limit of 18 eV. There may be evidence for neutrino mass and mixing in the SN1987a data, in the same range suggested by the ITEP experiment. 42 refs., 3 figs.

Robertson, R.G.H.

1988-01-01

273

Streamer chamber experiments  

International Nuclear Information System (INIS)

The reactions 40Ar + KCl at eight energies from 0.36 to 1.8 GeV/u, 4He + KCl at .977 and 40Ar + BaI2 and 40Ar + Pb3O4 at .772 GeV/u measured in a Streamer Chamber experiment have been analyzed to determine the stopping power of nuclei, the degree of isotropy and thermalization achieved in central collisions, to search for collective expansion effects and to obtain compressional energies of bulk nuclear matter. Observables used were pion and proton exclusive final state measurements, ratios of total transverse to longitudinal momentum per event, momentum flux and ? production. From the systematic discrepancy of the ?-multiplicities produced in central collisions with respect to an intranuclear cascade model, compressional energies are extracted which fit a parabolic form of the nuclear matter equation of state with a compressibility constant of K = 240 MeV. (orig.).

1982-01-01

274

Divertor characterization experiments  

Energy Technology Data Exchange (ETDEWEB)

Recent DIII-D experiments with enhanced Scrape-off Layer (SOL) diagnostics permit detailed characterization of the SOL and divertor plasma under various operating conditions. We observe two distinct plasma modes: attached and detached divertor plasmas. Detached plasmas are characterized by plate temperatures of only 1 to 2 eV. Simulation of detached plasmas using the UEDGE code indicate that volume recombination and charge exchange play an important role in achieving detachment. When the power delivered to the plate is reduced by enhanced radiation to the point that recycled neutrals can no longer be efficiently ionized, the plate temperature drops from around 10 eV to 1-2 eV. The low temperature region extends further off the plate as the power continues to be reduced, and charge exchange processes remove momentum, reducing the plasma flow. Volume recombination becomes important when the plasma flow is reduced sufficiently to permit recombination to compete with flow to the plate.

Porter, G.D.; Allen, S.; Fenstermacher, M.; Hill, D.; Brown, M.; Jong, R.A,; Rognlien, T.; Rensink, M.; Smith, G.; Stambaugh, R.; Mahdavi, M.A.; Leonard, A.; West, P., Evans, T.; DIII-D Team

1996-06-18

275

[Experiences with central pancreatectomy].  

UK PubMed Central (United Kingdom)

INTRODUCTION: The authors report their experience with central pancreatectomy and also summarize relevant literature data. MATERIAL AND METHODS: Central pancreatectomies were performed in 7 patients for benign or low-grade malignant pancreatic neoplasms, or pancreatic rupture in one patient. Most frequently applied anastomosis was between the distal part of the pancreas and a Roux-en-Y limb, while the proximal cut surface was closed with sutures, and the suture line was covered with a limb. RESULTS: There were three complications (37%), but reoperation didn't need to be performed and none of the patients died. We did not detect any deterioration in the exocrine or endocrine function during the follow-up period. CONCLUSIONS: Central pancreatectomy is a safe procedure with excellent functional results, if both the indication and the applied technique are chosen appropriately.

Kelemen D; Papp R; Cseke L; Horváth OP

2012-10-01

276

Customer experiences and expectations  

Energy Technology Data Exchange (ETDEWEB)

Customer experiences and expectations from competition and cogeneration in the power industry were reviewed by Charles Morton, Director of Energy at CPC International, by describing Casco`s decision to get into cogeneration in the early 1990s in three small corn milling plants in Cardinal, London and Port Colborne, Ontario, mainly as result of the threat of a 40 per cent increase in power prices. He stressed that cost competitiveness of cogeneration is entirely site-specific, but it is generally more attractive in larger facilities that operate 24 hours a day, where grid power is expensive or unreliable. Because it is reliable, cogeneration holds out the prospect of increased production-up time, as well as offering a hedge against higher energy costs, reducing the company`s variable costs when incoming revenues fall short of costs, and providing an additional tool in head-to-head competition.

Morton, C. R.

1997-05-01

277

Customer experiences and expectations  

International Nuclear Information System (INIS)

Customer experiences and expectations from competition and cogeneration in the power industry were reviewed by Charles Morton, Director of Energy at CPC International, by describing Casco's decision to get into cogeneration in the early 1990s in three small corn milling plants in Cardinal, London and Port Colborne, Ontario, mainly as result of the threat of a 40 per cent increase in power prices. He stressed that cost competitiveness of cogeneration is entirely site-specific, but it is generally more attractive in larger facilities that operate 24 hours a day, where grid power is expensive or unreliable. Because it is reliable, cogeneration holds out the prospect of increased production-up time, as well as offering a hedge against higher energy costs, reducing the company's variable costs when incoming revenues fall short of costs, and providing an additional tool in head-to-head competition.

1997-01-01

278

The Stanford experiment  

International Nuclear Information System (INIS)

The central element of the Stanford relativity experiment is a cryogenic gyroscope with a performance in space many orders of magnitude superior to that of conventional earth-bound devices. In the early phases of the program, a great deal of thought was given to the problem of achieving the performance goal, and an entirely new gyro concept was developed based on the application of cryogenic techniques to electrostatic gyroscopes. In this paper the authors describe the construction of the gyroscope, outline its development into an operational laboratory device, and present some of the results obtained with it. They also give a brief account of the torque analysis which demonstrates that it is feasible to make a gyroscope with the desired performance.

1988-01-01

279

EURATOM: Development, role, experience  

International Nuclear Information System (INIS)

Besides description of the historical development of EURATOM and its role in safeguards the paper includes the implementation experience of EURATOM safeguards. Depending on the scope of inspection a set of measures is applied according to the following verification methods: accountancy audit, visual checks, counting and identification, non-destructive measurements, sampling and destructive analysis complemented by containment and surveillance measures. The present staff of the safeguards directorate comprises about 300 persons of which two thirds are inspectors. EURATOM has a solid legal basis for performing safeguards inspections and the necessary infrastructure for inspection support, information treatment and data evaluation. It is a full scope multinational regional safeguards system fulfilling its obligations under EURATOM Treaty and contributing to the successful implementation of the Non-proliferation treaty by satisfying its obligations in the framework of the safeguards agreements with the IAEA

1998-01-01

280

Brookhaven experiment E-802  

International Nuclear Information System (INIS)

[en] Brookhaven E-802 is a magnetic spectrometer experiment which is directed towards the measurement of particle momentum spectra and particle-particle correlations following reactions with 14.5 GeV/u O and Si ions. In addition to the spectrometer there are detectors to measure the transverse energy flow, longitudinal energy flow, and the multiplicity. These detectors can be used to characterize the particle spectra or correlated between themselves. Particle spectra have been obtained for protons, pions, and kaons using targets of gold, copper, and aluminium although the data are not entirely analyzed as yet. A first result that is of great interest is the K+/?+ ratio for Si + Au reactions which is larger than expected on the basis of the known p+p data

1989-01-01

 
 
 
 
281

[Young people's sexual experience].  

UK PubMed Central (United Kingdom)

The rise in teenage pregnancy and young people's vulnerability to HIV have been a serious problem. This paper is intended to confront this statement based on its structural concepts (adolescence, youth, teenage pregnancy, and vulnerability) and by a non-exhaustive review of the relevant literature. The current paper discusses the ideas of youth and adolescence to approach the sexuality of young people and adolescents from the perspective of inequalities between different social groups and their access to health and resources for the prevention of diseases like HIV/AIDS as well as contraception. There are multiple paths leading young people to having unprotected sexual relations, and the numbers that surface on pregnancy, STDs, and HIV infection are doubtless lower than the real figures. The data presented herein indicate that the safe-sex approach is still necessary among youth, requiring efforts to produce creative strategies that make sense in different socio-cultural contexts in which young people experience sex.

Villela WV; Doreto DT

2006-11-01

282

Non-tokamak experiments  

International Nuclear Information System (INIS)

[en] The purpose of this report is to summarize the non-tokamak experiments. The non-tokamaks naturally seek to establish reactor relevance. This applies specifically to RFPs and helical systems. With LHD, a large heliotron introduced to the international fusion community at this conference, a large step toward a stellarator power plant has been taken. Another potential of non-tokamaks is that they can contribute in a unique form to the understanding of magnetic confinement and specifically to toroidal confinement because they are not tokamaks. Most of the non-tokamaks are toroidal: helical systems, RFPs, FRCs, CTs, dipoles and spheromaks. Mirrors, traps,foci are non-toroidal systems

2001-01-01

283

Moessbauer experiments, ch. 1  

International Nuclear Information System (INIS)

The magnetic properties of iron base alloys have been investigated as a function of the concentrations of the sp-elements Al, Si, Ga, Ge, As, Sn, and Sb. An extensive description of the Moessbauer Effect Spectroscopy (MES) technique is given. The results of MES experiments at room temperature for FeX alloys (X stands for one of the sp-elements) and impurity concentrations of 1, 3 and 5 a/o are presented. Through temperature dependant measurements the hyperfine fields H ((m,n)T) at iron nuclei in different surroundings are obtained. The change of the Curie temperature of the various dilute iron-base alloys, with respect to pure iron, as a function of the impurity concentration is investigated. Average magnetic hyperfine fields and isomer shifts measured at 119Sn nuclei in Fe119Sn are discussed.

1977-10-07

284

The SNO+ Experiment  

CERN Multimedia

The SNO+ experiment is the follow-up to the Sudbury Neutrino Observatory (SNO). The heavy water that was in SNO will be replaced with a liquid scintillator of linear alkylbenzene (plus fluor). SNO+ has many physics goals including detecting pep and CNO solar neutrinos, detecting geo-neutrinos, studying reactor neutrino oscillations, serving as a supernova neutrino detector and carrying out a search for neutrinoless double beta decay by adding neodymium to the liquid scintillator. Since a large amount of 150Nd isotope can be added to SNO+, a competitive search would be possible, with sensitivity below 100 meV using natural Nd and sensitivity below 40 meV with enriched neodymium.

Chen, Mark C

2008-01-01

285

Experience with IPNS targets  

Energy Technology Data Exchange (ETDEWEB)

Three targets have operated in the IPNS Neutron Scattering Facility. The first, a depleted Uranium target, served from 1981 until it was replaced in 1988 by the Enriched Uranium Booster Target. The Booster Target had operated for nearly three years when it suffered a cladding leak and was replaced with the retired depleted Uranium target. That target reached its end-of-life after less than one year`s further operation, and was replaced with an identical one newly assembled from spare components, which is still operating satisfactorily. This paper reviews the operating history of the IPNS targets and the findings reached during analysis of the failures. Similarities with ISIS target experience, preliminary conclusions and plans for providing spares and improved targets are discussed. We present some preliminary results from the hot cell examination of the failed depleted Uranium target.

Carpenter, J.M.; Hins, A.G.

1993-12-31

286

Tritium neutrino mass experiments  

International Nuclear Information System (INIS)

The current status of the experimental search for neutrino mass is reviewed, with emphasis on direct kinematic methods, such as the beta decay of tritium. The situation concerning the electron neutrino mass as measured in tritium beta decay is essentially unchanged from a year ago, although a great deal of experimental work is in progress. The ITEP group continues to find evidence for a nonzero mass, now slightly revised to 26(5) eV. After correcting for recently discovered errors in the energy loss distribution and source thickness, however, the Z/umlt u/rich group still claims and upper limit of 18 eV. There may be evidence for neutrino mass and mixing in the SN1987a data, in the same range suggested by the ITEP experiment. 42 refs., 3 figs

1988-01-01

287

Experiments of reactivity inserts  

International Nuclear Information System (INIS)

Experiments of reactivity insertion have been performed in the IPEN-MB-01 critical facility. Small Cd rods were built with control mecanisms similar to control rods, so that a wide range of reactivity could be inserted into the core. Reactivity insertions in a step fashion were obtained by dropping the Cd rods from the middle to outside of the core. The signals of two detectors monitoring the transient were analyzed through inverse kinetics after verifying that the possible spatial redistribution of the neutron flux would not invalidate such analysis. The reactivity value obtained for the perturbation via a differential control rod worth curve differed only 1.6% from the inverse kinetics estimate. (author).

1991-01-01

288

A Refined Experience Sampling Method to Capture Mobile User Experience  

CERN Multimedia

This paper reviews research methods used to understand the user experience of mobile technology. The paper presents an improvement of the Experience Sampling Method and case studies supporting its design. The paper concludes with an agenda of future work for improving research in this field. Keywords: Research methods, topology, case study, contrasting graph, Experience Sampling Method

Cherubini, Mauro

2009-01-01

289

The Digital Archive Experience  

DEFF Research Database (Denmark)

This article, as well as the book, investigates the ways in which new digital media may enhance the experience of the art-archive. Taken as a whole, the new media is a vital component of a 'transdisciplinary' and transformative field, a cultural landscape that is changing rapidly the conditions and domains of the archive and the (art)museum. How, then, should the functions and strengths of both archive and museum be shaped to meet those cultural and technological changes? When the Internet and world wide web became 'the place to be' commercially, museums followed suit and established their own sites. These can be coarsely divided into two categories: purely utilitarian websites with information about admission, hours of operation, directions, and the current show. The other - more ambitious - type of website tried to expand the exhibition area of the museum into virtual reality. The idea sounds great on paper but seldom succeeds in reality. Such websites often ignore the physical and social experience of a museum visit. Curiously, when they are most successful, websites often compete with the actual museum, possibly reducing the number of visitors and diluting the effect of seeing art first hand. The book discusses the challenges of the archive and the (art)museum in the age of digital media. It is based upon documentation from a research project, MAP - Media Art Platform, that drew upon the talents and collaboration of many institutions, artists, programmers, art historians, designers and others. The outcome of the project was presented at the exhibition TOTAL_ACTION - Art in the New Media Landscape at the Museum of Contemporary Art in Roskilde, Denmark, from October through November 2008.

SØndergaard, Morten

2009-01-01

290

The Armstrong experiment revisited  

Science.gov (United States)

When a high-voltage direct-current is applied to two beakers filled with water or polar liquid dielectrica, a horizontal bridge forms between the two beakers. This experiment was first carried out by Lord Armstrong in 1893 and then forgotten until recently. Such bridges are stable by the action of electrohydrodynamic (EHD) forces caused by electric field gradients counteracting gravity. Due to these gradients a permanent pumping of liquid from one beaker into the other is observed. At macroscopic scale several of the properties of a horizontal water bridge can be explained by modern electrohydrodynamics, analyzing the motion of fluids in electric fields. Whereas on the molecular scale water can be described by quantum mechanics, there is a conceptual gap at mesoscopic scale which is bridged by a number of theories including quantum mechanical entanglement and coherent structures in water - theories that we discuss here. Much of the phenomenon is already understood, but even more can still be learned from it, since such "floating" liquid bridges resemble a small high voltage laboratory of their own: The physics of liquids in electric fields of some kV/cm can be studied, even long time experiments like neutron or light scattering are feasible since the bridge is in a steady-state equilibrium and can be kept stable for hours. It is also an electro-chemical reactor where compounds are transported through by the EHD flow, enabling the study of electrochemical reactions under potentials which are otherwise not easily accessible. Last but not least the bridge provides the experimental biologist with the opportunity to expose living organisms such as bacteria to electric fields without killing them, but with a significant influence on their behavior, and possibly, even on their genome.

Fuchs, Elmar C.; Wexler, Adam D.; Paulitsch-Fuchs, Astrid H.; Agostinho, Luewton L. F.; Yntema, Doekle; Woisetschläger, Jakob

2013-08-01

291

The polarized SRF gun experiment  

Energy Technology Data Exchange (ETDEWEB)

An experiment is under way to prove the feasibility of a super-conducting RF gun for the production of polarized electrons. We report on the progress of the experiment and on simulations predicting the possibility of success.

Kewisch,J.; Ben-Zvi, I.; Rao, T.; Burrill, A.; Pate, D.; Todd, R.; Wang, E.; Bluem, H.; Holmes, D.; Shultheiss, T.

2008-10-01

292

THE EXPERIENCE OF ART – THE EMPIRIA OR EXPERIMENT?  

Directory of Open Access Journals (Sweden)

Full Text Available In contemporary aesthetics exists an belief, that the experience of art is the primary fact, which initiates and leads theoretical reflection, as also is the state basis of creating, valuing and the opinion on art. Present text is the test of philosophical recognition of relationship between field of products of new art as well as with context formative it experiences. Author motivates thesis, that radical changes in present art have their source in of meanings consisting on primary notion of experience changes. The present artistic practice goes away from aesthetical experience as empiria and the contemplation and used the notion of experience as experiment and investigation, which dismisses art from her proper functions and brings it rather to aggressive ideology of scientism. The recognition of this progressive change of meanings in founding the art notion of experience has the important consequences both for understanding of present art and for describing it theory.

Franciszek Chmielowski

2010-01-01

293

Experiment facilities for life science experiments in space.  

UK PubMed Central (United Kingdom)

To perform experiments in microgravity environment, there should be many difficulties compared with the experiments on ground. JAXA (Japan Aerospace Exploration Agency) has developed various experiment facilities to perform life science experiments in space, such as Cell Culture Kit, Thermo Electric Incubator, Free Flow Electrophoresis Unit, Aquatic Animal Experiment Unit, and so on. The first experiment facilities were flown on Spacelab-J mission in 1992, and they were improved and modified for the 2nd International Microgravity Laboratory (IML-2) mission in 1994. Based on these experiences, some of them were further improved and flown on another missions. These facilities are continuously being improved for the International Space Station use, where high level functions and automatic operations will be required.

Uchida S

2004-11-01

294

Demystifying the Delayed Choice Experiments  

CERN Multimedia

The delayed choice experiments are a collection of experiments where the counterintuitive laws of quantum mechanics are manifested in a very striking way. Although the delayed choice experiments can be very accurately described with the standard framework of quantum optics, a more didactical and intuitive explanation seems not to have been given so far. In this note, we fill that gap.

Gaasbeek, Bram

2010-01-01

295

Particle physics experiments report 1993  

Energy Technology Data Exchange (ETDEWEB)

This document consists of unedited contributions from each experiment carried out in 1993 under the aegis of the Particle Physics Experiments Selection Panel of the United Kingdom Science and Engineering Research Council. Proposals are listed by title and collaborating institutions, which accelerator is used, year(s) of running and what stage the experiment is currently at. (UK).

Roberts, B.A. (comp.)

1994-01-01

296

Antihydrogen Experiment Gravity Interferometry Spectroscopy  

CERN Multimedia

The AEGIS experiment (Antihydrogen Experiment: Gravity, Interferometry, Spectroscopy) has the aim of carrying out the first measurement of the gravitational interaction of antimatter to a precision of 1%, by applying techniques from atomic physics, laser spectroscopy and interferometry to a beam of antihydrogen atoms. A further goal of the experiment is to carry out spectroscopy of the antihydrogen atoms in flight.

Niinikoski, T; Allkofer, Y R; Trezzi, D; Dassa, L; Prevedelli, M; Ferrari, G; Vaccarone, R M; Perini, D; Belov, A; Boscolo, I; Nedelec, P; Testera, G; Bonomi, G; Al-qaradawi, I; De almeida simoes, J J; Brusa, R S; Prelz, F; Manuzio, G; Riccardi, C; Fontana, A; Genova, P; Haug, F; Merkt, F; Turbabin, A; Castelli, F; Lagomarsino, V E; Doser, M; Gninenko, S; Cataneo, F; Zenoni, A; Rotondi, A; Nebbia, G; Cabaret, L; Comparat, D P; Dudarev, A; Regenfus, C; Kellerbauer, A G; Eisel, W T; Carraro, C; Zavatarelli, S M; Mariazzi, S

297

Beam induced backgrounds: CDF experience  

Energy Technology Data Exchange (ETDEWEB)

We summarize the experiences of the Collider Detector at Fermilab (CDF) experiment in the presence of backgrounds originating from the counter circulating beams in the Fermilab Tevatron. These backgrounds are measured and their sources identified. Finally, we outline the strategies employed to reduce the effects of these backgrounds on the experiment.

Tesarek, R.J.; /Fermilab

2008-05-01

298

Shielding experiments for accelerator facilities  

International Nuclear Information System (INIS)

A series of shielding experiments was carried out by using AVF cyclotron accelerator of TIARA at JAERI in order to validate shielding design methods for accelerator facilities in intermediate energy region. In this paper neutron transmission experiment through thick shields and radiation streaming experiment through a labyrinth are reported. (author)

1999-01-27

299

Subterranean stress engineering experiments  

Energy Technology Data Exchange (ETDEWEB)

The state of stress in a subterranean rock mass has classically been assumed to be constant at best. In soil with a high clay content, preconsolidation and drainage methods can lead to more stable foundation material, but methods for engineering the stresses in large masses of rock are not well known. This paper shows the results from an experiment designed to alter the in situ rock stress field in an oil shale mine. This was done by hydrofracturing the rock by use of a packed-well injection system and then propping the crack open with a thixotropic gel, which slowly hardened to the consistency of cement. Successive hydrofracture and high-pressure grouting resulted in an overstressed region. Well-head injection pressures, surface tilts, injection rates, and subterranean strains were measured and recorded on floppy disk by a Z-80 microprocessor. The results were then transmitted to the large computer system at the Los Alamos Scientific Laboratory (LASL). To put the data in a more useful form, computer-generated movies of the tilts and strains were made by use of computer graphics developed at LASL. The purpose of this paper is to present results from the Single Large Instrumented Test conducted in the Colony Oil Shale Mine near Rifle, Colorado. 13 figures.

Campbell, J.R.; Colgate, S.A.; Wheat, B.M.

1980-01-01

300

Reactor shutdown experience  

International Nuclear Information System (INIS)

[en] This section presents a regular report of summary statistics relating to recent reactor shutdown experience. The information includes both numbers of events and rates of occurrence. It was compiled from data about operating events entered into the SCSS data system by the Nuclear Operations Analysis Center at the Oak Ridge National Laboratory, covering the three-month period of July, August, and September 1987. Cumulative information, since May 1, 1984, is also shown. Updates on shutdown events included in earth reports are excluded. Table 1 lists information on shutdowns as a function of reactor power at the time of the shutdown for both boiling-water reactors (BWRs) and pressurized-water reactors (PWRs). Table 2 shows data on shutdowns by shutdown type: Real Scrams are events in which the reactor was scrammed for a valid cause; Spurious Scrams are events in which an instrument failure of other fault causes a scram not actually called for by existing reactor conditions; Non-Scram shutdowns (frequently from operating power to hot standby) do not involve actuation of the scram system, either manually or automatically. Only reactors in commercial operation are included. Table 3 lists information about shutdowns by reactor age category, both total numbers and rates in that category; it also shows cumulative results

1988-01-01

 
 
 
 
301

Lithium Irradiation Experiment  

Energy Technology Data Exchange (ETDEWEB)

The subject of tritium production in the Antiproton Source Collection lens was raised in the mid-1980s during the design phase of the pbar source. Interest in it has recurred during development of the proton lens and in recent investigations to determine the feasibility of liquid lithium collection lenses for the pbar source and a muon collider project. Calculations for tritium and beryllium 7 production on lithium suffer from a lack of information on medium and high energy cross section data. In addition, knowledge of the energy spectrum within the target vault is based upon calculations. Knowledge of the low energy spectrum, important for tritium production on lithium, is limited, if not non-existent. For Collider Run II, effort is to be applied to improve the performance of the solid lithium lens. Historically, examination of failed lithium lenses has not been pursued because they have been fairly radioactive and because they are thought to contain significant quantities of the radionuclides tritium and beryllium 7. The development of methods to examine failed lithium lenses may be desirable so that the specific causes of failure can be discovered. From such studies, design improvements can be incorporated with the goal of achieving lens performances goals related to Collider Run II. The purpose of the lithium irradiation experiment is to determine the production rates of radioisotopes tritium and beryllium 7 within the lithium lens in its operating in its operating environment.

Leveling, A.F.; /Fermilab

2000-08-22

302

VISIR: Experiences and Challenges  

Directory of Open Access Journals (Sweden)

Full Text Available It is of crucial importance the integration of practical sessions in engineering curricula owing to their significant role in understanding engineering concepts and scientific phenomena. However, the lack of practical sessions due to the high costs of the equipment and the unavailability of instructors has caused a significant declination in experimentation in engineering education. Remote laboratories have tackled this issues providing online reusable and shared workbenches unconstrained by neither geographical nor time considerations. Thereby, they have extremely proliferated among universities and integrated into engineering curricula over the last decade. This contribution compiles diverse experiences based on the deployment of the remote laboratory, Virtual Instrument Systems in Reality (VISIR), on the practices of undergraduate engineering grades at various universities within the VISIR community. It aims to show the impact of its usage on engineering education concerning the assessments of students and teachers as well. In addition, the paper address the next challenges and future works carried out at several universities within the VISIR community.

Mohamed Tawfik; Elio Sancristobal; Sergio Martin; Charo Gil; Alberto Pesquera; Pablo Losada; Gabriel Diaz; Juan Peire; Manuel Castro; Javier García-Zubia; Unai Hernández; Pablo Orduña; Ignacio Angulo; M. C. Costa Lobo; M.A. Marques; M. C. Viegas; Gustavo R. Alves

2012-01-01

303

[Experience with fetal pulsoxymetry].  

Science.gov (United States)

The authors have had the opportunity to do research on an embryonic pulsoxymetre in twenty cases when traditional cardiotocographic observation and clinical symptoms had indicated intrauterine risk. The results obtained have been compared with those of a control group where embryonic pulsoxymetrical observation was not effected. The comparison was effected using the same criteria. The experiment aimed at defining how specific embryonic pulsoxymetrical observation may be if used as a screening method as well as whether its application would decrease the number of Cesarian sections. During the process of pulsoxymetrical observation, with positive change of the embryonic heart function with clear as well as meconium stained amniotic fluid, if the embryonic oxygen saturation reached levels over 30%, no Cesarian section was performed. At a saturation level under 30%, two Cesarian sections were required. In the control group without pulsoxymetrical analysis four Cesarian sections had to be performed. The oxygen saturation level of the umbilical cord artery blood of babies who underwent pulsoxymetrical observation and of those born with a Cesarian delivery were almost the same, the blood pH level was acidotic. On conclusion uterine pulsoxymetrical observation objectively reflects the intrauterine distress through fetal blood oxygenation and consequently, influences the number of Cesarian sections. PMID:10976196

Koltai, M; Csécsei, K; Kovatsits, B

2000-07-30

304

[Experience with fetal pulsoxymetry  

UK PubMed Central (United Kingdom)

The authors have had the opportunity to do research on an embryonic pulsoxymetre in twenty cases when traditional cardiotocographic observation and clinical symptoms had indicated intrauterine risk. The results obtained have been compared with those of a control group where embryonic pulsoxymetrical observation was not effected. The comparison was effected using the same criteria. The experiment aimed at defining how specific embryonic pulsoxymetrical observation may be if used as a screening method as well as whether its application would decrease the number of Cesarian sections. During the process of pulsoxymetrical observation, with positive change of the embryonic heart function with clear as well as meconium stained amniotic fluid, if the embryonic oxygen saturation reached levels over 30%, no Cesarian section was performed. At a saturation level under 30%, two Cesarian sections were required. In the control group without pulsoxymetrical analysis four Cesarian sections had to be performed. The oxygen saturation level of the umbilical cord artery blood of babies who underwent pulsoxymetrical observation and of those born with a Cesarian delivery were almost the same, the blood pH level was acidotic. On conclusion uterine pulsoxymetrical observation objectively reflects the intrauterine distress through fetal blood oxygenation and consequently, influences the number of Cesarian sections.

Koltai M; Csécsei K; Kovatsits B

2000-07-01

305

The DIMEX experiment  

International Nuclear Information System (INIS)

[en] The DIMEX (dipole plasma microwave exposure) experiment tests the feasibility of using a magnetic dipole confined plasma as a plasma cloak. A plasma is magnetically confined about a small permanent magnet that is sheathed in stainless steel to produce stabilization of MHD instabilities. The plasma is formed by firing a low-voltage electron beam down the magnetic field lines to the magnet pole, using argon gas as the chamber fill gas. A plasma shell is observed to form around the magnet, having a plasma free region near the magnet, an abrupt rise to peak density just outside of the plasma free region, and a slow, monotonically decreasing density profile outward to the chamber walls from the region of peak density. Peak electron densities of 1011/cc at electron temperatures of 1 eV, have been measured. Following beam shutoff, a quiescent period of plasma confinement, characterized by very little diffusion, is observed, lasting 1.5 msec. This period of low diffusion is followed by a period of Bohm-like diffusion with density decay times of 2 msec. Microwaves at 1 GHz are strongly absorbed at intensities up to ?10W/cm2. At intensities above this value strong reflection begins. Analyses of DIMEX experimental results are presented along with the latest experimental data

1990-01-01

306

Condensed landscape experience  

DEFF Research Database (Denmark)

‘Re-thinking interaction between landscape and urban buildings’ participates in an interdisciplinary discourse about the theoretical and practical advantages of openly juxtaposing landscape and architecture without having one more advanced in importance. Recently, the greenification of buildings is becoming a standard in contemporary architecture. Merging architecture and landscape has turned into a principle for an ecological / sustainable architecture. Yet, my aspiration is to achieve a wider interaction involving an application of a wider range of perspectives, such as: urban identity, social demands, quality of space, mixture of functions, urban complexity, public life and cultural heritage. In order to launch such an approach, an understanding of the spatial, social and environmental significance of a radical re-thinking of relationships between architecture and landscape is necessary. This paper addresses the question of whether the sensation of landscape can be condensed in function or to the size of an urban building. It also discusses the benefits and potentials of the amalgamate, by underlining the unique qualities of such a hybrid. In an attempt to define the experience of landscape, eight attributes are introduced: discover, diversity, cyclic, equality, scale, transformation, topography and wilderness. The essay analyzes the attendance of these attributes in two existing fascinating hybrid structures. The first example is The High-Line a public space in New York, and the second example is Dubiner Apartment House in Israel. Even though the examples are rather different one from the other, they embody a beneficial exchange of architectural and landscape features.

Earon, Ofri

307

Gathering positive experience  

CERN Multimedia

Last Monday, the new CERN Machine Advisory Committee (CMAC) met for the first time, and we had good news to tell its members. Over the weekend, injection tests for both LHC beams were successfully carried out. In other words, we’ve had beam in the LHC for the first time since September 2008. That’s a good feeling, but it’s no reason for complacency. There’s still a long way to go before first physics at the new energy frontier. As the Bulletin has reported over recent weeks, we’re gathering a lot of positive experience with the new quench detection and protection system (QPS), which is already allowing us to monitor the LHC far better than we were able to in the past. So far, the QPS for three of the LHC’s eight sectors has been put through its paces, and we’ve also power tested those sectors to 2000 amperes, the equivalent of around 1.2 TeV per beam. The next step is to slowly increase the current to 4000 amperes, and...

2009-01-01

308

Subterranean stress engineering experiments  

International Nuclear Information System (INIS)

The state of stress in a subterranean rock mass has classically been assumed to be constant at best. In soil with a high clay content, preconsolidation and drainage methods can lead to more stable foundation material, but methods for engineering the stresses in large masses of rock are not well known. This paper shows the results from an experiment designed to alter the in situ rock stress field in an oil shale mine. This was done by hydrofracturing the rock by use of a packed-well injection system and then propping the crack open with a thixotropic gel, which slowly hardened to the consistency of cement. Successive hydrofracture and high-pressure grouting resulted in an overstressed region. Well-head injection pressures, surface tilts, injection rates, and subterranean strains were measured and recorded on floppy disk by a Z-80 microprocessor. The results were then transmitted to the large computer system at the Los Alamos Scientific Laboratory (LASL). To put the data in a more useful form, computer-generated movies of the tilts and strains were made by use of computer graphics developed at LASL. The purpose of this paper is to present results from the Single Large Instrumented Test conducted in the Colony Oil Shale Mine near Rifle, Colorado. 13 figures

1980-05-29

309

Particle physics experiments, 1991  

International Nuclear Information System (INIS)

Data taking for this experiment was completed in December 1983. The samples include approximately 19,000 (?) and 11,000 (?-bar) charged current events. These constitute the largest data set of interactions on free protons. Work published to date includes studies of inclusive structure functions and final state properties, exclusive final states, neutral current cross sections and production of strange and charmed particles. During the past year results have been published on the production of f2 (1270) and ?0 (770) mesons in ?p and ?-barp charged current interactions. In the case of the f2 this represents the first observation of such production. It is found that the multiplicities are 0.047±0.017 in ?p and 0.17±0.018 in ?-barp. The f2 mesons are mostly produced at large hadronic invariant mass W and in the forward hemisphere. The production of ?0 mesons can be observed with high statistics in both ?p and ?-barp interactions and the differential cross section studied. The observations are compared with LUND Monte Carlo predictions, which are generally found to be too high. However qualitative features of the data are reproduced. Work continues on a precise determination of the neutral current/charged current ratio, on the study of charged and neutral current structure functions and on the production of strange particles. (author)

1992-01-01

310

Young students experience theory  

CERN Document Server

Three sixteen-year-old students from the International School of Geneva, La Chataigneraie have spent a week finding out about the life of a theoretical physicist at CERN. Student Peter Bishop at the blackboard with Robert Fleischer of Theory Division. Peter Bishop, Sam Schoenholz and Alexander Hultin spent the time with the Theory Unit of the Physics department. The visit was at the suggestion of the students themselves, who are required to undertake work experience at an organization, gaining insights into professional life, as part of their studies. After an introduction to CERN at Microcosm, each student had the opportunity to learn about physics at a level well beyond their current academic training. They were mentored by theoretical physicists who introduced them to the basics of particle physics, discussing physics in general as well as topics such as predicting the mass of the Higgs boson and cosmology. A visit to CMS, guided by Ariane Frey, proved very impressive, but the working conditions of physi...

2004-01-01

311

The LOPES experiment  

International Nuclear Information System (INIS)

[en] Cosmic ray particles hit the Earth's atmosphere and induce extensive air showers (EAS). These EAS mainly consist of electrons and positrons that produce radio emission due to their interaction with the Earth's magnetic field. Measuring this radio emission is the purpose of the LOPES (LOFAR Prototype Station) experiment. LOPES is located at Campus North of the Karlsruhe Institute of Technology at the same site as the EAS particle detector KASCADE-Grande. Since the first measurements in 2003, LOPES was improved by various experimental setups and could establish the radio technique. By now, detailed studies of the measured radio signal are performed, like the behaviour of the lateral distribution or the polarization of the electric field. Furthermore, with LOPES the dependence of the radio pulse on properties of the incoming cosmic ray, like primary energy, primary mass, or incoming direction is investigated. In this article we describe the different LOPES setups, next we explain our standard analysis procedure and then we discuss some highlights of our recent results.

2011-01-01

312

L3 + Cosmics Experiment  

CERN Multimedia

%RE4 %title\\\\ \\\\The L3+C experiment takes advantage of the unique properties of the L3 muon spectrometer to get an accurate measurement of cosmic ray muons 30 m underground. A new muon trigger, readout and DAQ system have been installed, as well as a scintillator array covering the upper surfaces of the L3 magnet for timing purposes. The acceptance amounts to 200 $m^2 sr$. The data are collected independently in parallel with L3 running. In spring 2000 a scintillator array will be installed on the roof of the SX hall in order to estimate the primary energy of air showers associated with events observed in L3+C.\\\\ \\\\The cosmic ray muon momentum spectrum, the zenith angular dependence and the charge ratio are measured with high accuracy between 20 and 2000 GeV/c. The results will provide new information about the primary composition, the shower development in the atmosphere, and the inclusive pion and kaon (production-) cross sections (specifically the "$\\pi$/K ratio") at high energies. These data will also hel...

2002-01-01

313

First experiments with POWERPLAY.  

UK PubMed Central (United Kingdom)

Like a scientist or a playing child, POWERPLAY (Schmidhuber, 2011) not only learns new skills to solve given problems, but also invents new interesting problems by itself. By design, it continually comes up with the fastest to find, initially novel, but eventually solvable tasks. It also continually simplifies or compresses or speeds up solutions to previous tasks. Here we describe first experiments with POWERPLAY. A self-delimiting recurrent neural network SLIM RNN (Schmidhuber, 2012) is used as a general computational problem solving architecture. Its connection weights can encode arbitrary, self-delimiting, halting or non-halting programs affecting both environment (through effectors) and internal states encoding abstractions of event sequences. Our POWERPLAY-driven SLIM RNN learns to become an increasingly general solver of self-invented problems, continually adding new problem solving procedures to its growing skill repertoire. Extending a recent conference paper (Srivastava, Steunebrink, Stollenga, & Schmidhuber, 2012), we identify interesting, emerging, developmental stages of our open-ended system. We also show how it automatically self-modularizes, frequently re-using code for previously invented skills, always trying to invent novel tasks that can be quickly validated because they do not require too many weight changes affecting too many previous tasks.

Srivastava RK; Steunebrink BR; Schmidhuber J

2013-05-01

314

French experience with electropolishing  

International Nuclear Information System (INIS)

Among the various techniques to minimize corrosion products deposition on out of core areas, surface polishing has been researched. The attention of French partners was drawn to this technique and a test was conducted at Chinon B1 NPP in 1984 using six manway covers with various surface finishing (mechanical polishing, electropolishing, mechanical plus electropolishing/on reference). On the basis of the good results obtained and with beneficial cost considerations the electropolishing of SGCH has been decided for new EDF reactors. Once the decision was made feasibility and qualifications programs were developed. Taking into account the promising results obtained, EDF asked FRAMATOME to perform the first electropolishing operation on one steam generator channel head at Nogent 1 in 1987. Since 1988 the French experience consists of the electropolishing of 4SG at Nogent 2, 4SG at Cattenom 3, 4SG at Penly 1 and 4SG at Golfech 1 (NPP), and is perfectly satisfactory. The industrial operation provides excellent polishing and does not create undesired effects. The French partners are now thinking of a new device which could be realised at FRAMATOME especially for steam generator replacement. (author).

1989-01-01

315

Sustained spheromak physics experiment  

Energy Technology Data Exchange (ETDEWEB)

The Sustained Spheromak Physics Experiment, SSPX, will study spheromak physics with particular attention to energy confinement and magnetic fluctuations in a spheromak sustained by electrostatic helicity injection. In order to operate in a low collisionality mode, requiring Te> 100 eV, vacuum techniques developed for tokamaks will be applied, and a divertor will be used for the first time in a spberomak. The discharge will operate for pulse lengths of several milliseconds, long compared to the time to establish a steady-state equilibrium but short compared to the L/R time of the flux conserver. The spheromak and helicity injector ("gun") are closely coupled, as shown by an ideal MHD model with force-free injector and edge plasmas. The current from the gun passes along the symmetry axis of the spheromak, and the resulting toroidal magnetic field causes the safety factor, q, to diverge on the separatrix. The q-profile depends on the ratio of the injector current to spheromak current and on the. magnetic flux coupling the injector to the spheromak. New diagnostics include magnetic field measurements by a reflectometer operating in combined 0- and X-modes and by a transient internal probe (TIP).

Hooper, E B

1998-09-29

316

RF experiments on PLT  

International Nuclear Information System (INIS)

A variety of rf experiments are being conducted on PLT in order to explore rf techniques which could improve tokamak performance parameters. Of special importance are the studies of ion Bernstein wave (IBW) heating, lower hybrid MHD stabilization and electron heating, down-shifted electron cyclotron heating, and fast wave current drive. Ion Bernstein wave heating results at modest power indicate that the particle confinement time could be enhanced relative to that for fast wave heating in the ion cyclotron range of frequencies (ICRF) and neutral beam heating. At these power levels a conclusive determination of energy confinement scaling with power cannot yet be given. Central sawtooth and m=1 MHD stabilization is being obtained with centrally peaked lower hybrid (LH) current drive and the central electron temperature is peaking to values (approx. 5 keV) well outside the bounds of 'profile consistency'. In this case the electron energy confinement is apparently increased relative to the ohmic value. The production of relativistic electrons via heating at the down-shifted electron cyclotron (EC) frequency is found to be consistent with theoretical predictions and lends support to the use of this method for heating in relatively high magnetic field devices. Finally, the study of fast wave current drive will begin in the near future to determine the efficacy of this method relative to that for the slow wave case and to determine if high density operation is feasible. (author).

1986-01-01

317

rf experiments on PLT  

Energy Technology Data Exchange (ETDEWEB)

A variety of rf experiments are being conducted on PLT in order to explore rf techniques which could improve tokamak performance parameters. Of special importance are the studies of ion Bernstein wave (IBW) heating, lower hybrid MHD stabilization and electron heating, down-shifted electron cyclotron heating, and fast wave current drive. Ion Bernstein wave heating results at modest power indicate that the particle confinement time could be enhanced relative to that for fast wave heating in the ion cyclotron range of frequencies (ICRF) and neutral beam heating. At these power levels a conclusive determination of energy confinement scaling with power cannot yet be given. Central sawtooth and m = 1 MHD stabilization is being obtained with centrally peaked lower hybrid (LH) current drive and the central electron temperature is peaking to values (approx.5 keV) well outside the bounds of ''profile consistency.'' In this case the electron energy confinement is apparently increased relative to the ohmic value. The production of relativistic electrons via heating at the down-shifted electron cyclotron (EC) frequency is found to be consistent with theoretical predictions and lends support to the use of this method for heating in relatively high magnetic field devices.

Hosea, J.; Wilson, J.R.; Hooke, W.; Ono, M.; Mazzucato, E.; Bell, R.; Bernabei, S.; Cavallo, A.; Chu, T.K.; Cohen, S.

1986-01-01

318

AGS experiments -- 1991, 1992, 1993  

International Nuclear Information System (INIS)

This report contains: (1) FY 1993 AGS schedule as run; (2) FY 1994--95 AGS schedule; (3) AGS experiments ? FY 1993 (as of 30 March 1994); (4) AGS beams 1993; (5) AGS experimental area FY 1991 physics program; (6) AGS experimental area FY 1992 physics program; (7) AGS experimental area FY 1993 physics program; (8) AGS experimental area FY 1994 physics program (planned); (9) a listing of experiments by number; (10) two-page summaries of each experiment; (11) listing of publications of AGS experiments; and (12) listing of AGS experiments.

1994-03-30

319

Welcome to the experience economy.  

UK PubMed Central (United Kingdom)

First there was agriculture, then manufactured goods, and eventually services. Each change represented a step up in economic value--a way for producers to distinguish their products from increasingly undifferentiated competitive offerings. Now, as services are in their turn becoming commoditized, companies are looking for the next higher value in an economic offering. Leading-edge companies are finding that it lies in staging experiences. To reach this higher level of competition, companies will have to learn how to design, sell, and deliver experiences that customers will readily pay for. An experience occurs when a company uses services as the stage--and goods as props--for engaging individuals in a way that creates a memorable event. And while experiences have always been at the heart of the entertainment business, any company stages an experience when it engages customers in a personal, memorable way. The lessons of pioneering experience providers, including the Walt Disney Company, can help companies learn how to compete in the experience economy. The authors offer five design principles that drive the creation of memorable experiences. First, create a consistent theme, one that resonates throughout the entire experience. Second, layer the theme with positive cues--for example, easy-to-follow signs. Third, eliminate negative cues, those visual or aural messages that distract or contradict the theme. Fourth, offer memorabilia that commemorate the experience for the user. Finally, engage all five senses--through sights, sounds, and so on--to heighten the experience and thus make it more memorable.

Pine BJ 2nd; Gilmore JH

1998-07-01

320

Mapping Bicyclists’ Experiences in Copenhagen  

DEFF Research Database (Denmark)

This paper presents an approach to the collection, mapping, and analysis of cyclists’ experiences. By spatially relating located experiences to the availability of bicycle facilities and other aspects of the urban environment, their influence on cyclists’ experiences can be analysed. 398 cyclists responded and sketched their most recent cycle route and a total of 890 points to locations along the route where they had had positive and negative cycling experiences. The survey was implemented as an online questionnaire built on Google Maps, and allowed up to three positive and three negative experience points to be mapped and classified. By relating the characteristics of the experience points and the routes to the traversed urban area in general, the significance of the preconditions for obtaining positive or negative experiences could be evaluated. Thereby urban spaces can be mapped according to the potential promotion of positive or negative experiences. Further, the method might be applied to assess the effect of proposed changes to the urban design in terms of cyclists’ experiences. Statistical analysis of the location attributes, traffic environments and conflicts, bicycle facilities, urban density, centrality, and environmental amenities indicates that positive experiences, or the absence of negative experiences, are clearly related to the presence of en-route cycling facilities, and attractive nature environments within a short distance of large water bodies or green edges along the route.

Snizek, Bernhard; Nielsen, Thomas Alexander Sick

 
 
 
 
321

Mapping bicyclists’ experiences in Copenhagen  

DEFF Research Database (Denmark)

This paper presents an approach to the collection, mapping, and analysis of cyclists’ experiences. By spatially relating located experiences to the availability of bicycle facilities and other aspects of the urban environment, their influence on cyclists’ experiences can be analysed. 398 cyclists responded and sketched their most recent cycle route and a total of 890 points to locations along the route where they had had positive and negative cycling experiences. The survey was implemented as an online questionnaire built on Google Maps, and allowed up to three positive and three negative experience points to be mapped and classified.By relating the characteristics of the experience points and the routes to the traversed urban area in general, the significance of the preconditions for obtaining positive or negative experiences could be evaluated. Thereby urban spaces can be mapped according to the potential promotion of positive or negative experiences. Further, the method might be applied to assess the effect of proposed changes to the urban design in terms of cyclists’ experiences.Statistical analysis of the location attributes, traffic environments and conflicts, bicycle facilities, urban density, centrality, and environmental amenities indicates that positive experiences, or the absence of negative experiences, are clearly related to the presence of en-route cycling facilities, and attractive nature environments within a short distance of large water bodies or green edges along the route.

Snizek, Bernhard; Sick Nielsen, Thomas Alexander

2013-01-01

322

Design of Computer Experiments  

DEFF Research Database (Denmark)

The main topic of this thesis is design and analysis of computer and simulation experiments and is dealt with in six papers and a summary report. Simulation and computer models have in recent years received increasingly more attention due to their increasing complexity and usability. Software packages make the development of rather complicated computer models using predefined building blocks possible. This implies that the range of phenomenas that are analyzed by means of a computer model has expanded significantly. As the complexity grows so does the need for efficient experimental designs and analysis methods, since the complex computer models often are expensive to use in terms of computer time. The choice of performance parameter is an important part of the analysis of computer and simulation models and Paper A introduces a new statistic for waiting times in health care units. The statistic is a measure of the extent of long waiting times, which are known both to be the most bothersome and to have the greatest impact on patient satisfaction. A simulation model for an orthopedic surgical unit at a hospital illustrates the benefits of using the measure. Another important consideration in connection to simulation models is the design of experiments, which is the decision of which of the possible configurations of the simulation model that should be tested. Since the possible configurations are numerous and the time to test a single configuration may take minutes or hours of computer time, the number of configurations that can be tested is limited. Papers B and C introduce a novel experimental plan for simulation models having two types of input factors. The plan differentiates between factors that can be controlled in both the simulation model and the physical system and factors that are only controllable in the simulation model but simply observed in the physical system. Factors that only are controllable in the simulation model are called uncontrollable factors and they correspond to the environmental factors in fluencing the physical system. Applying the experimental framework on the simulation model in Paper A shows that the effects of changes in the uncontrollable factors are better understood with the proposed design compared to the alternative and commonly used methods. In papers D and E a modeling framework for analyzing simulation models with multiple noise sources is presented. It is shown that the sources of variation of the simulation model can be divided in two components corresponding to changes in the environmental factors (the uncontrollable factor settings) and to random variation. Moreover, the structure of the environmental effects can be estimated, which can be used to put the system in a more robust operating mode. The interpolation technique called Kriging is the topic of Paper F, which is a widely applied technique for building so called models-for-the-model (metamodels). We propose a method that handles both qualitative and quantitative factors, which is not covered by the standard model. Fitting the final Kriging model is done in two stages each based on fitting regular Kriging models. It is shown that this method works well on a realistic example such as a simulation model for a surgical unit.

Dehlendorff, Christian

2010-01-01

323

CDM - the EPCOR experience  

Energy Technology Data Exchange (ETDEWEB)

A number of EPCOR-supported CDM projects that did not succeed, and a number of other projects that succeeded in reaching their objectives are discussed, along with the lessons learned from each of the projects. Among the projects that did not meet expectations was a sustainable forestry management project in Belize, where the local manager embezzled funds, resulting in the subsequent termination of the project, without benefits to the local community or offsets to EPCOR. By contrast, the 'UtiliTree' project wherein 40 utility companies from North America undertook a variety of forestry projects in North America and abroad has been very successful, resulting in reduced impact of logging of natural forests in Malaysia, and improved conservation of forest resources in Belize. The project succeeded because the large consortium shared the risk, because of the detailed analysis and ongoing inspection by experts, and because of the local presence and 'buy-in' of local authorities. The most significant lessons learned included the need for high level of due diligence effort, the clear evidence of difficulties of managing a project in foreign jurisdictions 3,000 miles from home, and the recognition that CDM projects carry much higher risks than traditional investment opportunities. The benefits of local participation and ongoing inspection and audit were very evident. Despite the mixed experiences, EPCOR recognizes that CDM presents significant opportunities to acquire offsets. Therefore, EPCOR continues to be interested in projects that promise benefits to the local community, have ongoing and trustworthy local presence and generate healthy offset streams.

Nodelman, J. [EPCOR Utilities, Inc., Edmonton, AB (Canada)

2000-07-01

324

Regulatory and operating experience  

International Nuclear Information System (INIS)

[en] Regulatory and operating experience in the disposal of radioactive waste can be divided into three time periods, World War II and its aftermath, Post World War II till the end of the cold war, and crystal ball gazing into the future. In the first period, there was little regulatory guidance and operating practices, all conducted under wartime secrecy conditions, sometimes were not even up to the norms of the times. Environmental releases resulted in some seriously contaminated sites and high dosages to some offsite populations. Failure to consider even the storage of wastes in a systems context resulted in some stocks that were difficult to recover, treat and dispose of in a final manner. In the second period, increasing civilian uses of nuclear power and isotopes for medical, research, and industrial purposes and military pressure for increased production of Pu-239 resulted in large and more dispersed disposal of radioactive wastes. Regulatory regimes, following growing environmental consciousness, came into existence that minimized exposure to environmental contamination. Practices, in most instances, increasingly conformed to these regulatory demands. The future is unknowable. However, for high level wastes, except for thermodynamically stable forms, no technology can guarantee safety and present methodologies are calculated to produce doses orders of magnitude lower than regulatory limits. Therefore, it is possible that research will be limited to no higher technology than is reasonably achievable. Whereas for low level waste, where proof is practicably possible, as high technology as is reasonably achievable will be best in the long run. (author). 24 refs, 5 figs, 3 tabs

1995-01-01

325

The isotope correlation experiment  

International Nuclear Information System (INIS)

The ESARDA working group on Isotopic Correlation Techniques, ICT and Reprocessing Input Analysis performed an Isotope Correlation Experiment, ICE with the aim to check the feasibility of the new technique. Ten input batches of the reprocessing of the KWO fuel at the WAK plant were analysed by 4 laboratories. All information to compare ICT with the gravimetric and volumetric methods was available. ICT combined with simplified reactor physics calculation was included. The main objectives of the statistical data evaluation were detection of outliers, the estimation of random errors and of systematic errors of the measurements performed by the 4 laboratories. Different methods for outlier detection, analysis of variances, Grubbs' analysis for the constant-bias model and Jaech's non-constant-bias model were applied. Some of the results of the statistical analysis may seem inconsistent which is due to the following reasons. For the statistical evaluations isotope abundance data (weight percent) as well as nuclear concentration data (atoms/initial metal atoms) were subjected to different outlier criteria before being used for further statistical evaluations. None of the four data evaluation groups performed a complete statistical data analysis which would render possible a comparison of the different methods applied since no commonly agreed statistical evaluation procedure existed. The results prove that ICT is as accurate as conventional techniques which have to rely on costly mass spectrometric isotope dilution analysis. The potential of outlier detection by ICT on the basis of the results from a single laboratory is as good as outlier detection by costly interlaboratory comparison. The application of fission product or Cm-244 correlations would be more timely than remeasurements at safeguards laboratories

1983-01-01

326

Experience with the jet chamber of the JADE-experiment  

Energy Technology Data Exchange (ETDEWEB)

The jet chamber, a pictorial drift chamber used as the central track detector of the JADE experiment at PETRA, is briefly described. The present status of the spatial and dE/dx resolutions and the experience during 4 years of operation is reported. Improvement plans for the readout electronics are described and a short review of the jet chamber designed for the proposed LEP experiment OPAL is given.

Heuer, R.D.

1984-01-01

327

Simulator experiments: effects of NPP operator experience on performance  

Energy Technology Data Exchange (ETDEWEB)

During the FY83 research, a simulator experiment was conducted at the control room simulator for a GE Boiling Water Reactor (BWR) NPP. The research subjects were licensed operators undergoing requalification training and shift technical advisors (STAs). This experiment was designed to investigate the effects of senior reactor operator (SRO) experience, operating crew augmentation with an STA and practice, as a crew, upon crew and individual operator performance, in response to anticipated plant transients. Sixteen two-man crews of licensed operators were employed in a 2 x 2 factorial design. The SROs leading the crews were split into high and low experience groups on the basis of their years of experience as an SRO. One half of the high- and low-SRO experience groups were assisted by an STA. The crews responded to four simulated plant casualties. A five-variable set of content-referenced performance measures was derived from task analyses of the procedurally correct responses to the four casualties. System parameters and control manipulations were recorded by the computer controlling the simulator. Data on communications and procedure use were obtained from analysis of videotapes of the exercises. Questionnaires were used to collect subject biographical information and data on subjective workload during each simulated casualty. For four of the five performance measures, no significant differences were found between groups led by high (25 to 114 months) and low (1 to 17 months as an SRO) experience SROs. However, crews led by low experience SROs tended to have significantly shorter task performance times than crews led by high experience SROs. The presence of the STA had no significant effect on overall team performance in responding to the four simulated casualties. The FY84 experiments are a partial replication and extension of the FY83 experiment, but with PWR operators and simulator.

Beare, A.N.; Gray, L.H.

1984-01-01

328

Simulator experiments: effects of NPP operator experience on performance  

International Nuclear Information System (INIS)

During the FY83 research, a simulator experiment was conducted at the control room simulator for a GE Boiling Water Reactor (BWR) NPP. The research subjects were licensed operators undergoing requalification training and shift technical advisors (STAs). This experiment was designed to investigate the effects of senior reactor operator (SRO) experience, operating crew augmentation with an STA and practice, as a crew, upon crew and individual operator performance, in response to anticipated plant transients. Sixteen two-man crews of licensed operators were employed in a 2 x 2 factorial design. The SROs leading the crews were split into high and low experience groups on the basis of their years of experience as an SRO. One half of the high- and low-SRO experience groups were assisted by an STA. The crews responded to four simulated plant casualties. A five-variable set of content-referenced performance measures was derived from task analyses of the procedurally correct responses to the four casualties. System parameters and control manipulations were recorded by the computer controlling the simulator. Data on communications and procedure use were obtained from analysis of videotapes of the exercises. Questionnaires were used to collect subject biographical information and data on subjective workload during each simulated casualty. For four of the five performance measures, no significant differences were found between groups led by high (25 to 114 months) and low (1 to 17 months as an SRO) experience SROs. However, crews led by low experience SROs tended to have significantly shorter task performance times than crews led by high experience SROs. The presence of the STA had no significant effect on overall team performance in responding to the four simulated casualties. The FY84 experiments are a partial replication and extension of the FY83 experiment, but with PWR operators and simulator

1984-01-01

329

Data analysis for electronic experiments  

International Nuclear Information System (INIS)

[en] In this lecture I schell attempt to cover the principal off-line software aspects in electronic experiments. Of course, this is too ambitious an undertaking for two reasons: Firstly the field is vast, and some important aspect will certainly have escaped my attention. Secondly, the choice of methods, features, algorithms, and packages presented will be biased through my personal opinion and experience, although to some extent it is influenced as well by the opinion and experience of my colleagues, who, like myself, are working in this field at CERN. Therefore, beware. Whenever I shall claim something to be evident, a matter of experience -- a fact --it ain't necessarily so. On the other hand, it will not be entirely wrong, since our experience is based on something like 30 experiments in high-energy physics using electronic for other people, and although these people are of course misled, one has to admit their existence. (orig.)

1981-03-12

330

Solar Neutrino Experiments New Physics?  

CERN Multimedia

Physics beyond the simplest version of the standard electroweak model is required to reconcile the results of the chlorine and the Kamiokande solar neutrino experiments. None of the 1000 solar models in a full Monte Carlo simulation is consistent with the results of the chlorine or the Kamiokande experiments. Even if the solar models are forced articficially to have a ${}^8 B$ neutrino flux in agreement with the Kamiokande experiment, none of the fudged models agrees with the chlorine observations. This comparison shows that consistency of the chlorine and Kamiokande experiments requires some physical process that changes the shape of the ${}^8 B$ neutrino energy spectrum. The GALLEX and SAGE experiments, which currently have large statistical uncertainties, differ from the predictions of the standard solar model by $2 \\sigma$ and $3 \\sigma$, respectively. The possibility that the neutrino experiments are incorrect is briefly discussed.

Bahcall, J N

1993-01-01

331

ITEP in H1 experiment  

International Nuclear Information System (INIS)

A group of ITEP researchers took part at all phases of H1 experiment at HERA collider. The experiment was devoted to investigation of lepton-proton interactions at high energies. A few subdetectors of H1 experiment have been developed, designed, and constructed at ITEP. ITEP researchers participated in assembling, maintenance, and commissioning of the apparatus, in service of the detector, in analysis and publication of results

2006-01-01

332

Two computer-assisted experiments  

Science.gov (United States)

Two computer-assisted experiments are described: (i) determination of the speed of ultrasound waves in water and (ii) measurement of the thermal expansion of an aluminum-based alloy. A new data-acquisition system developed by PASCO scientific is used. In both experiments, the Keep mode of recording data is employed: the data are recorded only when commanded. This allows one to record one variable automatically while the second variable is introduced by hand. The experiments are recommended for undergraduate laboratories.

Kraftmakher, Yaakov

2013-09-01

333

The theory of experience orientation  

DEFF Research Database (Denmark)

This paper describes the theory of experience orientation, which builds on the division of experiences in two categories: Goal-oriented and Omni-oriented. The theory comes from preliminary studies of userexperiences in a work-context, where I have found this distinction to be beneficial. In this paper I explain the theory behind it and the practical application of such a distinction when designing for an experience.

Jensen, Jesper Legaard

334

Experiments at CERN in 1986  

International Nuclear Information System (INIS)

This report is a compilation of the current experimental programme at CERN. The experiments listed are being performed at one of the following machines: The Super Proton Synchrotron, the Proton Synchrotron and the Synchro-Cyclotron. The four experiments planned for the Large Electron Positron machine are also listed. Each experiment is briefly described and a schematic layout of its apparatus is included, together with lists of participants and institutions. (orig./HSI).

1986-01-01

335

OSMOSE experiment representativity studies.  

Energy Technology Data Exchange (ETDEWEB)

The OSMOSE program aims at improving the neutronic predictions of advanced nuclear fuels through measurements in the MINERVE facility at the CEA-Cadarache (France) on samples containing the following separated actinides: Th-232, U-233, U-234, U-235, U-236, U-238, Np-237, Pu-238, Pu-239, Pu-240, Pu-241, Pu-242, Am-241, Am-243, Cm-244 and Cm-245. The goal of the experimental measurements is to produce a database of reactivity-worth measurements in different neutron spectra for the separated heavy nuclides. This database can then be used as a benchmark for integral reactivity-worth measurements to verify and validate reactor analysis codes and integral cross-section values for the isotopes tested. In particular, the OSMOSE experimental program will produce very accurate sample reactivity-worth measurements for a series of actinides in various spectra, from very thermalized to very fast. The objective of the analytical program is to make use of the experimental data to establish deficiencies in the basic nuclear data libraries, identify their origins, and provide guidelines for nuclear data improvements in coordination with international programs. To achieve the proposed goals, seven different neutron spectra can be created in the MINERVE facility: UO2 dissolved in water (representative of over-moderated LWR systems), UO2 matrix in water (representative of LWRs), a mixed oxide fuel matrix, two thermal spectra containing large epithermal components (representative of under-moderated reactors), a moderated fast spectrum (representative of fast reactors which have some slowing down in moderators such as lead-bismuth or sodium), and a very hard spectrum (representative of fast reactors with little moderation from reactor coolant). The different spectra are achieved by changing the experimental lattice within the MINERVE reactor. The experimental lattice is the replaceable central part of MINERVE, which establishes the spectrum at the sample location. This configuration leads to a uniform well-behaved system so that the reactor configuration is in the fundamental mode. In fact, an important property of the oscillation experiments performed in the OSMOSE program is that the neutron flux at the sample location has reached the asymptotic fundamental mode of the MINERVE lattice. This property allows the use of simple spatial methods for the analysis (e.g. a lattice code with axial buckling representing the leakage), without loss of accuracy. The computational challenge is then reduced to the need of an appropriate cross-section processing and of accurate resonance shielding algorithms. In the present study, calculations have been performed to investigate the similarity of the flux spectra at the sample position of different OSMOSE configurations with the neutron energy distributions characterizing existing thermal and fast reactors proposed under the advanced reactor programs Gen-IV, GNEP and NGNP.

Aliberti, G.; Klann, R.; Nuclear Engineering Division

2007-10-10

336

Designing experiments through compressed sensing.  

Energy Technology Data Exchange (ETDEWEB)

In the following paper, we discuss how to design an ensemble of experiments through the use of compressed sensing. Specifically, we show how to conduct a small number of physical experiments and then use compressed sensing to reconstruct a larger set of data. In order to accomplish this, we organize our results into four sections. We begin by extending the theory of compressed sensing to a finite product of Hilbert spaces. Then, we show how these results apply to experiment design. Next, we develop an efficient reconstruction algorithm that allows us to reconstruct experimental data projected onto a finite element basis. Finally, we verify our approach with two computational experiments.

Young, Joseph G.; Ridzal, Denis

2013-06-01

337

Evaluation of Saxton critical experiments  

Energy Technology Data Exchange (ETDEWEB)

As a part of International Criticality Safety Benchmark Evaluation Project (ICSBEP), SAXTON critical experiments were reevaluated. The effects of k{sub eff} of the uncertainties in experiment parameters, fuel rod characterization, soluble boron, critical water level, core structure, {sup 241}Am and {sup 241}Pu isotope number densities, random pitch error, duplicated experiment, axial fuel position, model simplification, etc., were evaluated and added in benchmark-model k{sub eff}. In addition to detailed model, the simplified model for Saxton critical experiments was constructed by omitting the top, middle, and bottom grids and ignoring the fuel above water. 6 refs., 1 fig., 3 tabs. (Author)

Joo, Hyung Kook; Noh, Jae Man; Jung, Hyung Guk; Kim, Young Il; Kim, Young Jin [Korea Atomic Energy Research Institute, Taejon (Korea, Republic of)

1997-12-31

338

Experiments at CERN in 1979  

International Nuclear Information System (INIS)

The 1979 catalogue of approved experiments at CERN has been compiled as a guide to the status of the experimental research programme at the 400 GeV Proton Synchrotron (SPS), the Intersecting Storage Rings (ISR), the 25 GeV Proton Synchrotron (PS), and the Synchrocyclotron (SC). The schematic layouts of beams and experiments at the various machines are given in the beginning of the report and are followed by descriptive material on the experiments. In general, a short summary of each of the approved experiments is given, with a description of the physics purpose, the apparatus employed, a list of the participants and the name of the collaboration. (Auth.).

1979-01-01

339

Hydrodynamic instability experiments and simulations  

Energy Technology Data Exchange (ETDEWEB)

Richtmyer-Meshkov experiments are conducted on the Nova laser with strong radiatively driven shocks (Mach > 20) in planar, two-fluid targets with Atwood number A < 0. Single mode interfacial perturbations are used to test linear theory and 3D random perturbations are used to study turbulent mix. Rayleigh-Taylor experiments are conducted on a new facility called the Linear Electric Motor (LEM) in which macroscopic fluids are accelerated electromagnetically with arbitrary acceleration profiles. The initial experiments are described. Hydrodynamic simulations in 2D are in reasonable agreement with the experiments, but these studies show that simulations in 3D with good radiation transport and equation of state are needed.

Dimonte, G.; Schneider, M.; Frerking, C.E.

1995-07-01

340

Experiment prediction for Loft Nonnuclear Experiment L1-4  

International Nuclear Information System (INIS)

A computer analysis, using the WHAM and RELAP4 computer codes, was performed to predict the LOFT system thermal-hydraulic response for Experiment L1-4 of the nonnuclear (isothermal) test series. Experiment L1-4 will simulate a 200 percent double-ended offset shear in the cold leg of a four-loop large pressurized water reactor. A core simulator will be used to provide a reactor vessel pressure drop representative of the LOFT nuclear core. Experiment L1-4 will be initiated with a nominal isothermal primary coolant temperature of 282.20C, a pressurizer pressure of 15.51 MPa, and a primary coolant flow of 270.9 kg/s. In general, the predictions of saturated blowdown for Experiment Ll-4 are consistent with the expected system behavior, and predicted trends agree with results from Semiscale Test S-01-4A, which simulated the Ll-4 experiment conditions.

1977-01-01

 
 
 
 
341

DHS Research Experience Summary  

Energy Technology Data Exchange (ETDEWEB)

I learned a great deal during my summer internship at Lawrence Livermore National Laboratory (LLNL). I plan to continue a career in research, and I feel that my experience at LLNL has been formative. I was exposed to a new area of research, as part of the Single Particle Aerosol Mass Spectrometry (SPAMS) group, and I had the opportunity to work on projects that I would not have been able to work on anywhere else. The projects both involved the use of a novel mass spectrometer that was developed at LLNL, so I would not have been able to do this research at any other facility. The first project that Zachary and I worked on involved using SPAMS to detect pesticides. The ability to rapidly detect pesticides in a variety of matrices is applicable to many fields including public health, homeland security, and environmental protection. Real-time, or near real-time, detection of potentially harmful or toxic chemical agents can offer significant advantages in the protection of public health from accidental or intentional releases of harmful pesticides, and can help to monitor the environmental effects of controlled releases of pesticides for pest control purposes. The use of organophosphate neurotoxins by terrorists is a possibility that has been described; this is a legitimate threat, considering the ease of access, toxicity, and relatively low cost of these substances. Single Particle Aerosol Mass Spectrometry (SPAMS) has successfully been used to identify a wide array of chemical compounds, including drugs, high explosives, biological materials, and chemical warfare agent simulants. Much of this groundbreaking work was carried out by our group at LLNL. In our work, we had the chance to show that SPAMS fulfills a demonstrated need for a method of carrying out real-time pesticide detection with minimal sample preparation. We did this by using a single particle aerosol mass spectrometer to obtain spectra of five different pesticides. Pesticide samples were chosen to represent four common classes of pesticides that are currently used in the US. Permethrin (a pyrethrin insecticide), dichlorvos and malathion (organophosphates), imidacloprid (a chloronicotinyl pesticide), and carbaryl (a carbamate) were selected for analysis. Samples were aerosolized either in water (using a plastic nebulizer) or in ethanol (using a glass nebulizer), and the particles entered the SPAMS instrument through a focusing lens stack. The particles then passed through a stage with three tracking lasers that were used to determine each particle's velocity. This velocity was used to calculate when to fire a desorption/ionization (D/I) laser in order to fragment the particle for analysis in a dual polarity time of flight mass spectrometer. Signals were digitized, and then analyzed using LLNL-developed software. We obtained chemical mass spectral signatures for each pesticide, and assigned peaks to the mass spectra based on our knowledge of the pesticides chemical structures. We then proved the robustness of our detection method by identifying the presence of pesticides in two real-world matrices: Raid{trademark} Ant Spray and a flea collar. To sample these, we simply needed to direct aerosolized particles into the SPAMS instrument. The minimal sample preparation required makes SPAMS very attractive as a detector. Essentially, we were able to show that SPAMS is a reliable and effective method for detecting pesticides at extremely low concentrations in a variety of matrices and physical states. The other project that I had the opportunity to be a part of did not involve data collection in the lab; it consisted of analyzing a large amount of data that had already been collected. We got to look at data collected over the course of about two months, when the SPAMS instrument was deployed to a public place. The machine sampled the air and collected spectra for over two months, storing all the spectra and associated data; we then looked at an approximately two-month subset of this data to search for patterns in the types of particles being detected. Essentially,

Venkatachalam, V

2008-10-24

342

A Classroom Experiment on Banking  

Science.gov (United States)

This classroom experiment uses double oral auction credit markets to illustrate the role of banks as financial intermediaries. The experiment demonstrates how risk affects market interest rates in the presence of asymmetric information. It provides fodder for a discussion of the moral-hazard problem of deposit insurance and its impact on depositor…

Kassis, Mary Mathewes; Hazlett, Denise; Ygosse Battisti, Jolanda E.

2012-01-01

343

Data processing in reflood experiments  

International Nuclear Information System (INIS)

[en] Data Processing in reflood experiments consists of experimental data conversion and heat transfer coefficient calculation. Described are method of data processing, principle of codes, programs, examples in each process, and also problems for the future. Improvement in data processing is proceeding along with reflood experiment. (auth.)

1978-01-01

344

Status of rare decay experiments  

International Nuclear Information System (INIS)

Some results are given for rare muon decay experiments currently running. Also, plans are discussed for rare kaon decay experiments. Some of the events sought come from processes which violate lepton flavor conservation. Several apparatuses used in the search are described. 35 references

1984-01-01

345

[On ambient experience medical products].  

Science.gov (United States)

Through the analysis on ambient experience medical products from Philips corporation, the article discusses the development trend of medical products, management strategy and design thinking as focusing on advantage industry, focusing on user experience, system integration of resources and opening and diverse design thinking. PMID:20812643

Su, Jun

2010-05-01

346

[On ambient experience medical products].  

UK PubMed Central (United Kingdom)

Through the analysis on ambient experience medical products from Philips corporation, the article discusses the development trend of medical products, management strategy and design thinking as focusing on advantage industry, focusing on user experience, system integration of resources and opening and diverse design thinking.

Su J

2010-05-01

347

Scyllac ''derated'' feedback sector experiments  

International Nuclear Information System (INIS)

[en] A 1200 sector of the Scyllac torus was ''derated'' for feedback stabilization experiments to reduce the m = 1 instability growth rates to values which are compatible with the response time of the feedback system. Initial plasma studies are given and compared with the predictions of an MHD model. Plasma stabilization experiments are reported. (U.S.)

1975-09-01

348

Experiences on IGSCC crack manufacturing  

Energy Technology Data Exchange (ETDEWEB)

The author presents his experience in manufacturing IGSCC realistic defects, mainly in INCONEL 600 MA Steam Generator Tubes. From that experience he extracts some knowledge about this cracking (influence of chemistry in the environment, stress state, crack growth rate, and occurrence in laboratory condition of break before leak).

Veron, P. [Equipos Nucleares, S.A., Maliano (Spain)

1997-02-01

349

An Undergraduate Column Chromatography Experiment.  

Science.gov (United States)

Background information, list of materials needed, and procedures used are provided for an experiment designed to introduce undergraduate students to the theoretical and technical aspects of column chromatography. The experiment can also be shortened to serve as a demonstration of the column chromatography technique. (JN)

Danot, M.; And Others

1984-01-01

350

KEK GRID for ILC Experiments  

CERN Multimedia

The LCG GRID system is the indispensable infrastructure for large scale computing required for ILC experiments. It had been used extensively for ILD LOI studies and its use will be further increased in coming DBD studies. Experiences during the LOI era and plan towards DBD study in KEK are presented.

Miyamoto, Akiya; Ikematsu, Katsumasa

2010-01-01

351

The structure of olfactory experience  

Digital Repository Infrastructure Vision for European Research (DRIVER)

In this study the structure of olfactory experience was investigated. Olfactory experience was defined by a set of attributes, i.e. elementary dimensions, which were specified empirically using Osgood's Semantic Differential methodology. A set of 42 7-step scales were generated (36 bipolar and 7 mon...

Markovi? Slobodan; Vulin Jelena

352

Status of neutrino mass experiments  

Energy Technology Data Exchange (ETDEWEB)

In 1980 two experiments ignited a fertile field of research the determination of the neutrino masses. Subsequently, over 35 experiments using a variety of techniques have probed or are probing this question. Primarily I will discuss electron antineutrino (hereafter referred to as neutrino) mass experiments. However, let me begin in Section I to discuss astronomical and terrestrial observations which motivated these experiments. In Section II, I will quote limits from muon and tau mass determinations. These limits are more thoroughly discussed in other papers. I will continue by describing the four approaches used to measure the electron neutrino mass. In Section III, tritium beta decay mass determinations will be reviewed. This section includes a general summary of previous experimental results, and discussion of the major ongoing experiments. Section IV offers concluding remarks. 24 refs., 24 figs.

Fackler, O.

1985-12-01

353

Heavy ion fusion injector experiments  

International Nuclear Information System (INIS)

We report on three experiments performed in connection with the 2 MV electrostatic quadrupole (ESQ) injector under construction at Lawrence Berkeley Laboratory. Scaled experiments have been conducted to study possible beam emittance growth due to beam aberrations in an ESQ injector. The experiment uses the SBTE (Single Beam Transport Experiment) accelerator system, quarter-scale ESQ setup and a potassium ion diode source. Measured emittance growth changes significantly with variations in current and diode energy, in good agreement with theoretical predictions. In addition, beam transport experiments were performed in a 1 MV axisymmetric electrostatic aperture column using a zeolite 1 inch diameter potassium ion source. Experimental measurements in good agreement with 2-1/2 D simulations showed that low emittance beams can be produced in axisymmetric structures. Finally, ESQ breakdown voltage tests without beam were performed at up to two times the quadrupole working voltage.

1993-01-01

354

Status of neutrino mass experiments  

International Nuclear Information System (INIS)

[en] In 1980 two experiments ignited a fertile field of research the determination of the neutrino masses. Subsequently, over 35 experiments using a variety of techniques have probed or are probing this question. Primarily I will discuss electron antineutrino (hereafter referred to as neutrino) mass experiments. However, let me begin in Section I to discuss astronomical and terrestrial observations which motivated these experiments. In Section II, I will quote limits from muon and tau mass determinations. These limits are more thoroughly discussed in other papers. I will continue by describing the four approaches used to measure the electron neutrino mass. In Section III, tritium beta decay mass determinations will be reviewed. This section includes a general summary of previous experimental results, and discussion of the major ongoing experiments. Section IV offers concluding remarks. 24 refs., 24 figs

1985-08-01

355

Implanted-tritium permeation experiments  

Energy Technology Data Exchange (ETDEWEB)

In fusion reactors, charge exchange neutral atoms of tritium coming from the plasma will be implanted into the first wall and other interior structures. EG and G Idaho is conducting two experiments to determine the magnitude of permeation into the coolant streams and the retention of tritium in those structures. One experiment uses an ion gun to implant deuterium. The ion gun will permit measurements to be made for a variety of implantation energies and fluxes. The second experiment utilizes a fission reactor to generate a tritium implantation flux by the /sup 3/He(n,p)/sup 3/H reaction. This experiment will simulate the fusion reactor radiation environment. We also plan to verify a supporting analytical code development program, in progress, by these experiments.

Longhurst, G.R.; Holland, D.F.; Casper, L.A.; Hsu, P.Y.; Miller, L.G.; Schmunk, R.E.; Watts, K.D.; Wilson, C.J.; Kershner, C.J.; Rogers, M.L.

1982-04-01

356

Implanted-tritium permeation experiments  

International Nuclear Information System (INIS)

[en] In fusion reactors, charge exchange neutral atoms of tritium coming from the plasma will be implanted into the first wall and other interior structures. EG and G Idaho is conducting two experiments to determine the magnitude of permeation into the coolant streams and the retention of tritium in those structures. One experiment uses an ion gun to implant deuterium. The ion gun will permit measurements to be made for a variety of implantation energies and fluxes. The second experiment utilizes a fission reactor to generate a tritium implantation flux by the 3He(n,p)3H reaction. This experiment will simulate the fusion reactor radiation environment. We also plan to verify a supporting analytical code development program, in progress, by these experiments

1982-04-15

357

REXIB: Remote Experiments Interface Builder  

Directory of Open Access Journals (Sweden)

Full Text Available Remote Experimentation is an educational resource that allows teachers to strengthen the practical contents of science & engineering courses. However, building up the interfaces to remote experiments is not a trivial task. Although teachers normally master the practical contents addressed by a particular remote experiment they usually lack the programming skills required to quickly build up the corresponding web interface. This paper describes the automatic generation of experiment interfaces through a web-accessible Java application. The application displays a list of existent modules and once the requested modules have been selected, it generates the code that enables the browser to display the experiment interface. The tools’ main advantage is enabling non-tech teachers to create their own remote experiments.

Jorge R. Alves; Gustavo R. Alves; Paulo A. Ferreira; Jose M. Ferreira

2006-01-01

358

TRACY transient experiment databook. 2) ramp withdrawal experiment  

International Nuclear Information System (INIS)

[en] This is a databook of TRACY ''ramp withdrawal'' experiments. TRACY is a reactor to perform supercritical experiments using low-enriched uranyl nitrate aqueous solution. The excess reactivity of TRACY is 3$ at maximum, and it is inserted by feeding the solution to a core tank or by withdrawing a control rod, which is called as the transient rod, from the core. In the ramp withdrawal experiment, the supercritical experiment is initiated by withdrawing the transient rod from the core in a constant speed using a motor drive system. The data in the present databook consist of datasheets and graphs. Experimental conditions and typical values of measured parameters are tabulated in the datasheet. In the graph, power and temperature profiles are plotted. Those data are useful for the investigation of criticality accidents with fissile solutions, and for validation of criticality accident analysis codes. (author)

2002-01-01

359

TRACY transient experiment databook. 3) Ramp feed experiment  

International Nuclear Information System (INIS)

[en] This is a databook of TRACY ''ramp feed'' experiments. TRACY is a reactor to perform supercritical experiments using low-enriched uranyl nitrate aqueous solution. The excess reactivity of TRACY is 3$ at maximum, and it is inserted by feeding the solution to a core tank or by withdrawing a control rod, which is called as the transient rod, from the core. In the ramp feed experiment, the supercritical experiment is initiated by feeding the fuel solution to the core tank in a constant feed rate. The data in the present databook consist of datasheets and graphs. Experimental conditions and typical values of measured parameters are tabulated in the datasheet. In the graph, power and temperature profiles are plotted. Those data are useful for the investigation of criticality accidents with fissile solutions, and for validation of criticality accident analysis codes. (author)

2002-01-01

360

TRACY transient experiment databook. 1) Pulse withdrawal Experiment  

International Nuclear Information System (INIS)

[en] This is a databook of TRACY ''pulse withdrawal'' experiments. TRACY is a reactor to perform supercritical experiments using low-enriched uranyl nitrate aqueous solution. The excess reactivity of TRACY is 3$ at maximum, and it is inserted by feeding the solution to a core tank or by withdrawing a control rod, which is called as the transient rod, from the core. In the pulse withdrawal experiment, the supercritical experiment is initiated by withdrawing the transient rod pneumatically from the core in about 0.2s. The data in the present databook consist of datasheets and graphs. Experimental conditions and typical values of measured parameters are tabulated in the datasheet. In the graph, power, pressure, and temperature profiles are plotted. Those data are useful for the investigation of criticality accidents with fissile solutions, and for validation of criticality accident analysis codes. (author)

2002-01-01

 
 
 
 
361

TRACY transient experiment databook. 3) Ramp feed experiment  

Energy Technology Data Exchange (ETDEWEB)

This is a databook of TRACY ''ramp feed'' experiments. TRACY is a reactor to perform supercritical experiments using low-enriched uranyl nitrate aqueous solution. The excess reactivity of TRACY is 3$ at maximum, and it is inserted by feeding the solution to a core tank or by withdrawing a control rod, which is called as the transient rod, from the core. In the ramp feed experiment, the supercritical experiment is initiated by feeding the fuel solution to the core tank in a constant feed rate. The data in the present databook consist of datasheets and graphs. Experimental conditions and typical values of measured parameters are tabulated in the datasheet. In the graph, power and temperature profiles are plotted. Those data are useful for the investigation of criticality accidents with fissile solutions, and for validation of criticality accident analysis codes. (author)

Nakajima, Ken; Yamane, Yuichi; Ogawa, Kazuhiko; Aizawa, Eiju; Yanagisawa, Hiroshi; Miyoshi, Yoshinori [Japan Atomic Energy Research Inst., Tokai, Ibaraki (Japan). Tokai Research Establishment

2002-03-01

362

Customer Experience Management in Retailing  

Directory of Open Access Journals (Sweden)

Full Text Available Survival of fittest & fastest is the mantra of today’s business game. To compete successfully in this business era, the retailer must focus on the customer’s buying experience. To manage a customer’s experience, retailers should understand what “customer experience” actually means. Customer Experience Management is a strategy that focuses the operations and processes of a business around the needs ofthe individual customer. It represents a strategy that results in a win–win valuemexchange between the retailer and its customers. The goal of customer experience management is to move customers from satisfied to loyal and then from loyal to advocate. This paper focuses on the role of macro factors in the retail environment and how they can shape customer experiences and behaviors. Several ways (e.g.,Brand, Price, Promotion, Supply Chain Management, Location, Advertising, Packaging & labeling, Service Mix, and Atmosphere) to deliver a superior customer experience are identified which should result in higher customer satisfaction, more frequent shopping visits, larger wallet shares, and higher profits.

Kamaladevi B

2009-01-01

363

Wirelessness as Experience of Transition  

Directory of Open Access Journals (Sweden)

Full Text Available The paper analyses wireless networks in terms of a concept of experience drawn from the work of William James. James' account of experience focuses closely on the effects of ongoing change, and this is particularly useful in thinking about media change. The specific experience in question here is 'wirelessness,' an experience that envelops many media, infrastructures, practices, and processes today. The paper argues that a concept of wirelessness uniquely connects together a set of perceptions, representation, materials, problems and events associated with ongoing change in contemporary media and information cultures. In analysing wirelessness as form of experience, the article examines how those feelings of ongoing change shape and inform experiences of self, otherness, place and sociality in technological-informatic environments. In describing different infrastructural and commercial dimensions of wirelessness, it pays close attention to how ‘conjunctive relations’ (James’ term) such as ‘with’, ‘between’, ‘near’, and ‘inside’ arise in wireless networks, and how different kinds of intimacy and distance stem from conjunctive relations. The paper explores how wirelessness embodies and organises networked places. In this respect, the paper inverts conventional understandings of the network as ground or platform. It treats the under-represented yet highly significant embodied experiences of relations as generative of information infrastructures.

Adrian Mackenzie

2008-01-01

364

Plasma physics experiments at GSI  

Energy Technology Data Exchange (ETDEWEB)

Experiments using high-energy/high-power lasers have being pursued for almost a decade at GSI. In the regime of ultra-intense lasers, the PHELIX (Petawatt High-Energy Laser for heavy-Ion experiments) system has reached the 20 TW level and first successful experiments have been done. In addition to the experiments on heavy-ion energy loss in laser produced plasmas, our research will focus on laser-assisted particle acceleration and the use of high-energy petawatt lasers (HEPW) for the diagnostics of dense plasmas which has raised great interest in the international community. The plasma physics group at GSI, based on experiments in France, the UK and the U.S., has contributed significantly to this field of research in recent years. Now, with the upcoming commissioning of different power levels of PHELIX our experimental activities can be performed at GSI. Due to the funding of a virtual institute by the Helmholtz Association, the opportunities for new experiments at GSI have grown significantly. The paper will give an overview of recent experimental results, show the link to the future GSI experimental program (including FAIR) and present the experiments that will be done at GSI for the years to come.

Schollmeier, M; Roth, M; Schaumann, G; Frank, A; Harres, K; Hessling, T; Nuernberg, F; Pelka, A; Schumacher, D; Hoffmann, D H H [Institut fuer Kernphysik, Technische Universitaet Darmstadt, Schlossgartenstrasse 9, 64289 Darmstadt (Germany); Blazevic, A; Witte, K; Zielbauer, B [GSI - Gesellschaft fuer Schwerionenforschung mbH, Planckstr. 1, 64291 Darmstadt (Germany); Flippo, K; Fernandez, J C; Gautier, D C; Hegelich, B M [LANL, P-24, Plasma Physics Group, PO Box 1663, MS E526, Los Alamos, NM 87545 (United States); Ruhl, H [Theoretische Physik I, Ruhr-Universitaet Bochum, 44797 Bochum (Germany); Schreiber, J [Department fuer Physik, Ludwig-Maximilians-Universitaet, Muenchen (Germany)], E-mail: m.roth@physik.tu-darmstadt.de

2008-05-01

365

An ontology of scientific experiments.  

UK PubMed Central (United Kingdom)

The formal description of experiments for efficient analysis, annotation and sharing of results is a fundamental part of the practice of science. Ontologies are required to achieve this objective. A few subject-specific ontologies of experiments currently exist. However, despite the unity of scientific experimentation, no general ontology of experiments exists. We propose the ontology EXPO to meet this need. EXPO links the SUMO (the Suggested Upper Merged Ontology) with subject-specific ontologies of experiments by formalizing the generic concepts of experimental design, methodology and results representation. EXPO is expressed in the W3C standard ontology language OWL-DL. We demonstrate the utility of EXPO and its ability to describe different experimental domains, by applying it to two experiments: one in high-energy physics and the other in phylogenetics. The use of EXPO made the goals and structure of these experiments more explicit, revealed ambiguities, and highlighted an unexpected similarity. We conclude that, EXPO is of general value in describing experiments and a step towards the formalization of science.

Soldatova LN; King RD

2006-12-01

366

Experiments at CERN in 1985  

International Nuclear Information System (INIS)

This book is a compilation of the current experimental program at CERN. The experiments listed are being performed at one of the following machines: the Super Proton Synchrotron (SPS), the Proton Synchrotron (PS) and the Synchro-Cyclotron (SC). The four experiments to be done by means of the Large Electron Positron machine (LEP) are also listed. The schematic layouts of beams and experiments at the various machines are given in the beginning of the report. The experiment goals and methods are briefly described and a schematic layout of the apparatus is included. Lists of participants and their institutions are also given. The status of the experiments (preparation, data-taking, completed) corresponds to the situation as of 1st November, 1985. ''Completed'' means only that data-taking is finished, not necessarily the analysis of the results; this status is kept for two years and then the experiment is removed from the catalogue. A complete list of all experiments published in this book since 1975 is given at the end of the catalogue. (orig./HSI).

1985-01-01

367

Customer Experience Management in Retailing  

Directory of Open Access Journals (Sweden)

Full Text Available Survival of fittest & fastest is the mantra of today,s business game. To compete successfully in this business era, the retailer must focus on the customer,s buying experience. To manage a customer,s experience, retailers should understand what "customer experience" actually means. Customer Experience Management is a strategy that focuses the operations and processes of a business around the needs of the individual customer. It represents a strategy that results in a win-win value exchange between the retailer and its customers. The goal of customer experience management is to move customers from satisfied to loyal and then from loyal to advocate. This paper focuses on the role of macro factors in the retail environment and how they can shape customer experiences and behaviors. Several ways (e.g., Brand, Price, Promotion, Supply Chain Management, Location, Advertising,Packaging & labeling, Service Mix, and Atmosphere) to deliver a superior customer experience are identified which should result in higher customer satisfaction, more frequent shopping visits, larger wallet shares, and higher profits.

Kamaladevi B

2010-01-01

368

Electron beam optics for the FEL experiment and IFEL experiment  

Energy Technology Data Exchange (ETDEWEB)

Electron beam transport system parameters for the FEL experiment and for the FEL experiment are given. The perturbation of the interaction region'' optics due to wiggler focussing is taken into account and a range of solutions are provided for relevant Twiss parameters in the FEL or IFEL region. Modifications of the transport optics in specific sections of the overall beam transport lines, for reasons of enhanced diagnostic capability or enhanced beam momentum analysis resolution, is also presented.

van Steenbergen, A.

1990-01-01

369

Electron beam optics for the FEL experiment and IFEL experiment  

Energy Technology Data Exchange (ETDEWEB)

Electron beam transport system parameters for the FEL experiment and for the FEL experiment are given. The perturbation of the ``interaction region`` optics due to wiggler focussing is taken into account and a range of solutions are provided for relevant Twiss parameters in the FEL or IFEL region. Modifications of the transport optics in specific sections of the overall beam transport lines, for reasons of enhanced diagnostic capability or enhanced beam momentum analysis resolution, is also presented.

van Steenbergen, A.

1990-12-31

370

Electron beam optics for the FEL experiment and IFEL experiment  

International Nuclear Information System (INIS)

Electron beam transport system parameters for the FEL experiment and for the FEL experiment are given. The perturbation of the ''interaction region'' optics due to wiggler focussing is taken into account and a range of solutions are provided for relevant Twiss parameters in the FEL or IFEL region. Modifications of the transport optics in specific sections of the overall beam transport lines, for reasons of enhanced diagnostic capability or enhanced beam momentum analysis resolution, is also presented

1990-01-01

371

Sketching user experiences the workbook  

CERN Multimedia

In Sketching User Experiences: The Workbook, you will learn, through step-by-step instructions and exercises, various sketching methods that will let you express your design ideas about user experiences across time. Collectively, these methods will be your sketching repertoire: a toolkit where you can choose the method most appropriate for developing your ideas, which will help you cultivate a culture of experience-based design and critique in your workplace. Features standalone modules detailing methods and exercises for practitioners who want to learn and develop their sketching skills E

Greenberg, Saul; Marquardt, Nicolai; Buxton, Bill

2012-01-01

372

Experiments at CERN in 1997  

International Nuclear Information System (INIS)

This book summarises the current experimental programme at CERN. The experiments listed are taking place at one of the following machines: the Large Electron Positron Collider (LEP), the Super Proton Synchroton (SPS), the 28 GeV Proton Synchrotron (PS), including the Antiproton Decelerator (AD) for slow antiprotons and the ISOLDE facility for short-lived ions. The three experiments now approved for installation at the Large Hadron Collider (LHC) and the R and D projects aimed at the development of new detector technologies and data acquisition systems for the LHC experiments are also listed. (orig./WL)

1997-01-01

373

Experiments Planning, Analysis, and Optimization  

CERN Document Server

Praise for the First Edition: "If you . . . want an up-to-date, definitive reference written by authors who have contributed much to this field, then this book is an essential addition to your library."-Journal of the American Statistical Association Fully updated to reflect the major progress in the use of statistically designed experiments for product and process improvement, Experiments, Second Edition introduces some of the newest discoveries-and sheds further light on existing ones-on the design and analysis of experiments and their applications in system optimization, robustness, and tre

Wu, C F Jeff

2011-01-01

374

AGS experiments: 1993 - 1994 - 1995  

International Nuclear Information System (INIS)

This report contains: FY 1995 AGS Schedule as Run; FY 1996-97 AGE Schedule (working copy); AGS Beams 1995; AGS Experimental Area FY 1993 Physics Program; AGS Experimental Area FY 1994 Physics Program; AGS Experimental Area FY 1995 Physics Program; AGS Experimental Area FY 1996 Physics Program (In progress); A listing of experiments by number; Two-page summaries of each experiment begin here, also ordered by number; Listing of publications of AGS experiments begins here; and Listing of AGS experimenters begins here. This is the twelfth edition.

1996-01-01

375

AGS experiments - 1994, 1995, 1996  

International Nuclear Information System (INIS)

This report contains the following information on the Brookhaven AGS Accelerator complex: FY 1996 AGS schedule as run; FY 1997 AGS schedule (working copy); AGS beams 1997; AGS experimental area FY 1994 physics program; AGS experimental area FY 1995 physics program; AGS experimental area FY 1996 physics program; AGS experimental area FY 1997 physics program (in progress); a listing of experiments by number; two-phage summaries of each experiment begin here, also ordered by number; listing of publications of AGS experiments begins here; and listing of AGS experimenters begins here.

1997-01-01

376

ALEPH: a particle physics experiment  

International Nuclear Information System (INIS)

One of the physics group at the Laboratoire de Physique Nucleaire des Hautes Energies de l'Ecole Polytechnique has been taking part, for ten years, in one of the large electron positron collision experiment: ALEPH. The purpose of this experiment is to install our actual knowledge of the fundamental constituents of matter on well checked grounds and to open new perspectives. The theoretical frame of the experiment, the Standard Model, is described briefly as well as the experimental techniques and the main results. The structure of the collaborations in charge of such projects is described.

1993-01-01

377

The ATLAS Positron Experiment -- APEX  

Energy Technology Data Exchange (ETDEWEB)

APEX -- the ATLAS Positron Experiment -- is designed to measure electrons and positrons emitted in heavy-ion collisions. Its scientific goal is to gain insight into the puzzling positron-line phenomena observed at the GSI Darmstadt. It is in operation at the ATLAS accelerator at Argonne National Lab. The assembly of the apparatus is finished and beginning 1993 the first positrons produced in heavy-ion collisions were observed. The first full scale experiment was carried out in December 1993, and the data are currently being analyzed. In this paper, the principles of operation are explained and a status report on the experiment is given.

Ahmad, I.; Back, B.B.; Betts, R.R.; Dunford, R.; Kutschera, W.; Rhein, M.D.; Schiffer, J.P.; Wilt, P.; Wuosmaa, A. [Argonne National Lab., IL (United States). Physics Div.; Austin, S.M.; Kashy, E.; Winfield, J.S.; Yurkon, J.E. [Michigan State Univ., East Lansing, MI (United States). NSCL; Bazin, D. [GANIL, Caen (France); Calaprice, F.P.; Young, A. [Princeton Univ., NJ (United States). Physics Dept.; Chan, K.C.; Chisti, A.; Chowhury, P.; Greenberg, J.S.; Kaloskamis, N.; Lister, C.J. [Yale Univ., New Haven, CT (United States). Wright Nuclear Structure Lab.; Fox, J.D.; Roa, E. [Florida State Univ., Tallahassee, FL (United States). Physics Dept.; Freedman, S.; Maier, M.R. [Lawrence Berkeley Lab., CA (United States); Freer, M. [Univ. of Birmingham (United Kingdom). Dept. of Physics; Gazes, S. [Univ. of Chicago, IL (United States). Dept. of Physics; Hallin, A.L.; Liu, M. [Queen`s Univ., Kingston, Ontario (Canada). Physics Dept.; Happ, T. [GSI, Darmstadt (Germany); Perera, A.; Wolfs, F.L.H. [Univ. of Rochester, NY (United States). NSRL; Trainor, T. [Univ. of Washington, Seattle, WA (United States). Nuclear Physics Lab.; Wolanski, M. [Argonne National Lab., IL (United States). Physics Div.]|[Univ. of Chicago, IL (United States). Dept. of Physics

1994-03-01

378

The ATLAS Positron Experiment -- APEX  

International Nuclear Information System (INIS)

[en] APEX -- the ATLAS Positron Experiment -- is designed to measure electrons and positrons emitted in heavy-ion collisions. Its scientific goal is to gain insight into the puzzling positron-line phenomena observed at the GSI Darmstadt. It is in operation at the ATLAS accelerator at Argonne National Lab. The assembly of the apparatus is finished and beginning 1993 the first positrons produced in heavy-ion collisions were observed. The first full scale experiment was carried out in December 1993, and the data are currently being analyzed. In this paper, the principles of operation are explained and a status report on the experiment is given

379

Narrative experiments and imaginative inquiry  

Directory of Open Access Journals (Sweden)

Full Text Available In this semi-autobiographical essay I explore the representation and performance of imaginative inquiry practices in educational inquiry and other disciplines, with particular reference to 'thought experiments' in the natural sciences and comparable practices in the arts, humanities, and social sciences. I share a number of experiences of writing as a mode of educational inquiry, with particular reference to narrative experiments inspired by Gilles Deleuze and Félix Guattari's figuration of the rhizome a process characterised as rhizosemiotic play and demonstrate the generativity of intertextual readings of selected fictions in catalysing them.

Noel Gough

2008-01-01

380

Narrative experiments and imaginative inquiry  

Scientific Electronic Library Online (English)

Full Text Available Abstract in english In this semi-autobiographical essay I explore the representation and performance of imaginative inquiry practices in educational inquiry and other disciplines, with particular reference to 'thought experiments' in the natural sciences and comparable practices in the arts, humanities, and social sciences. I share a number of experiences of writing as a mode of educational inquiry, with particular reference to narrative experiments inspired by Gilles Deleuze and Félix Guat (more) tari's figuration of the rhizome a process characterised as rhizosemiotic play and demonstrate the generativity of intertextual readings of selected fictions in catalysing them.

Gough, Noel

2008-08-01

 
 
 
 
381

Thinking of Experience, Experiencing Thinking  

Directory of Open Access Journals (Sweden)

Full Text Available The article briefly describes the relatively young field of cognitive science dedicated to the research of lived human experience – the so-called phenomenological inquiry (or first-person research). It enumerates the reasons for the renewed interest in the study of experience and outlines the field’s relation to the rest of cognitive science. With the help of an example (phenomenology of thinking), the article attempts to illustrate the importance of systematic study of experience and addresses some open questions emerging from such an enterprise.

Urban Kordeš

2012-01-01

382

Massive neutrinos in accelerator experiments  

Energy Technology Data Exchange (ETDEWEB)

The possible effects of heavy neutrinos that may be observed in experiments done at accelerators are discussed, including neutrino oscillation and neutrino decay. Massive neutrinos may be produced by mixing of the eigenstates of neutrinos or by direct production. Present searches for and indications of the massive neutrino include analysis of tritium decay, the oscillation results reported from the French Bugey reactor, and a dedicated experiment seeking neutrino decays in the PS beam at CERN. Future experiments are briefly described that seek neutrino oscillations or decays. 14 refs., 6 figs. (LEW)

Vannucci, F.

1984-08-17

383

Strangeness production experiments at Saturne  

International Nuclear Information System (INIS)

The recent results, current experiments, and future projects at SATURNE, in what concerns the measurement of strangeness production in p+p and p+A reactions at energies below 2.9 GeV are presented. (author)

1991-01-01

384

Software for the LHCb experiment  

CERN Document Server

LHCb is an experiment for precision measurements of CP-violation and rare decays in B mesons at the LHC collider at CERN. The LHCb software development strategy follows an architecture-centric approach as a way of creating a resilient software framework that can withstand changes in requirements and technology over the expected long lifetime of the experiment. The software architecture, called GAUDI, supports event data processing applications that run in different processing environments ranging from the real-time high- level triggers in the online system to the final physics analysis performed by more than one hundred physicists. The major architectural design choices and the arguments that lead to these choices will be outlined. Object oriented technologies have been used throughout. Initially developed for the LHCb experiment, GAUDI has been adopted and extended by other experiments. Several iterations of the GAUDI software framework have been released and are now being used routinely by the physicists of...

Corti, Gloria; Belyaev, Ivan; Cattaneo, Marco; Charpentier, Philippe; Frank, Markus; Koppenburg, Patrick; Mato-Vila, P; Ranjard, Florence; Roiser, Stefan

2006-01-01

385

NA63's enlightening experiments  

CERN Document Server

Using crystal targets, the NA63 experiment at CERN is investigating interaction processes in strong electromagnetic fields, with results that are relevant for a range of physics, including beam-beam effects in a future linear collider.

Uggerhoj, Ulrik I

2011-01-01

386

Experiments with moduli of quadrilaterals  

CERN Multimedia

Basic facts and definitions of conformal moduli of rings and quadrilaterals are recalled. Some computational methods are reviewed. For the case of quadrilaterals with polygonal sides, some recent results are given. Some numerical experiments are presented.

Rasila, A; Rasila, Antti; Vuorinen, Matti

2006-01-01

387

Neutrino oscillation experiments at LAMPF  

International Nuclear Information System (INIS)

The high flux of neutrinos available at the LAMPF linac beam stop has been used to search for neutrino oscillations and neutrino disappearance. Past and present experiments at the facility are described

1981-01-30

388

The ATLAS experiment: status report  

CERN Multimedia

The status of the ATLAS experiment is reviewed. Some preliminary results obtained with Cosmics on the ID, Calorimeter and the Muon Spectrometer are presented, some beam splash and halo events are presented.

Pontecorvo, L

2008-01-01

389

Flight Experiences with Laminar Flow.  

Science.gov (United States)

A review of natural laminar flow (NLF) flight experiences over the period from the 1930's to the present has been given to provide information on the achievability and maintainability of NLF in typical airplane operating environments. Significant effects ...

B. J. Holmes

1986-01-01

390

Middeck Active Control Experiment (MACE).  

Science.gov (United States)

Viewgraphs on the Middeck Active Control Experiment (MACE) are presented. Topics covered include: science program objectives and rationale; science requirements; capturing the essential physics; science development approach; development model hardware; de...

D. W. Miller

1991-01-01

391

Athens Automation and Control Experiment.  

Science.gov (United States)

The Athens Automation and Control Experiment is a hardware- and software-oriented research and development project which will be conducted on the Athens Utilities Board's electric distribution system, a distributor of the Tennessee Valley Authority (TVA),...

S. L. Purucker T. W. Reddoch

1983-01-01

392

The Lead Radius Experiment PREX  

International Nuclear Information System (INIS)

The Lead Radius Experiment PREX will run in Spring of 2010. The experiment measures the parity-violating asymmetry in the elastic scattering of polarized electrons from a lead nucleus at an energy of 1.05 GeV and a scattering angle of 5°. The Z0 boson couples mainly to neutrons, and provides a clean measurement of Rn with a projected experimental precision of ±1%. The measurement is a fundamental test of nuclear theory and pins down the density-dependence of the symmetry energy of neutron rich nuclear matter which has impacts on neutron star structure, heavy ion collisions, and atomic parity violation experiments. Recent developments in the experiment are described.

2011-01-01

393

The Lead Radius Experiment PREX  

Science.gov (United States)

The Lead Radius Experiment PREX will run in Spring of 2010. The experiment measures the parity-violating asymmetry in the elastic scattering of polarized electrons from a lead nucleus at an energy of 1.05 GeV and a scattering angle of 5°. The Z 0 boson couples mainly to neutrons, and provides a clean measurement of R n with a projected experimental precision of ±1%. The measurement is a fundamental test of nuclear theory and pins down the density-dependence of the symmetry energy of neutron rich nuclear matter which has impacts on neutron star structure, heavy ion collisions, and atomic parity violation experiments. Recent developments in the experiment are described.

Michaels, R.

2011-11-01

394

The Lead Radius Experiment PREX  

Energy Technology Data Exchange (ETDEWEB)

The Lead Radius Experiment PREX will run in Spring of 2010. The experiment measures the parity-violating asymmetry in the elastic scattering of polarized electrons from a lead nucleus at an energy of 1.05 GeV and a scattering angle of 5 Degree-Sign . The Z{sub 0} boson couples mainly to neutrons, and provides a clean measurement of R{sub n} with a projected experimental precision of {+-}1%. The measurement is a fundamental test of nuclear theory and pins down the density-dependence of the symmetry energy of neutron rich nuclear matter which has impacts on neutron star structure, heavy ion collisions, and atomic parity violation experiments. Recent developments in the experiment are described.

Michaels, R., E-mail: rom@jlab.org [Jefferson Lab (United States)

2011-11-15

395

LHCb: Self managing experiment resources  

CERN Multimedia

Within this paper we present an autonomic Computing resources management system used by LHCb for assessing the status of their Grid resources. Virtual Organizations Grids include heterogeneous resources. For example, LHC experiments very often use resources not provided by WLCG and Cloud Computing resources will soon provide a non-negligible fraction of their computing power. The lack of standards and procedures across experiments and sites generated the appearance of multiple information systems, monitoring tools, ticket portals, etc... which nowadays coexist and represent a very precious source of information for running HEP experiments Computing systems as well as sites. These two facts lead to many particular solutions for a general problem: managing the experiment resources. In this paper we present how LHCb, via the DIRAC interware addressed such issues. With a renewed Central Information Schema hosting all resources metadata and a Status System ( Resource Status System ) delivering real time informatio...

Stagni, F

2013-01-01

396

Michelson-Morley Experiment Revisited  

International Nuclear Information System (INIS)

The idea of the Michelson-Morley experiment is theoretically reanalyzed. Elementary arguments are put forward to precisely derive the most general allowable form of the directional dependence of the one-way velocity of light. (author)

2007-01-01

397

Michelson-Morley Experiment Revisited  

Science.gov (United States)

The idea of the Michelson-Morley experiment is theoretically reanalyzed. Elementary arguments are put forward to precisely derive the most general allowable form of the directional dependence of the one-way velocity of light.

Broda, Bogus?aw; Ostrowski, Marcin

2007-03-01

398

The structure of olfactory experience  

Directory of Open Access Journals (Sweden)

Full Text Available In this study the structure of olfactory experience was investigated. Olfactory experience was defined by a set of attributes, i.e. elementary dimensions, which were specified empirically using Osgood's Semantic Differential methodology. A set of 42 7-step scales were generated (36 bipolar and 7 monololar scales). 20 subjects judged 10 olfactory stimuli on this set of scales. The stimuli were specified in a preliminary study so as to cover the widest possible range of olfactory experience. Factor analysis with Varimax rotation revealed four factors, i.e. basic dimensions of olfactory experience (1) Affective factor (scales: beautiful, attractive, pleasant, etc), (2) Potency (scales: stable, impressive, strong, sharp, etc), (3) Closeness (scales: natural, warm, close, female, etc) and (4) The gustatory factor (scales: hot, sour, bitter, etc). The results have shown the primacy of Affective factor (circa 43% variance explained) in respect to the other factors (the other three factors in sum explained about 20% of the variance).

Markovi? Slobodan; Vulin Jelena

2008-01-01

399

Accordion-optimized DEPT experiments.  

UK PubMed Central (United Kingdom)

In this contribution, a pulse sequence is described for recording accordion-optimized DEPT experiments. The proposed ACCORDEPT experiment detects a wide range of one-bond coupling constants using accordion optimization. As a proof of concept, this strategy has been applied to a mesogen containing a large range of one-bond (1)J(CH) coupling constants associated with the various structural elements. The ACCORDEPT experiment afforded significant enhancements for the resonances with the larger (1)J(CH) couplings, similar SNR for aliphatic resonances, but reduced SNR for aliphatic resonances as compared with the standard DEPT experiment. In addition, the ACCORDEPT is straightforward to implement, does not require any supplementary calibration procedures and can be used under automated conditions without difficulty by inexperienced users.

Furrer J; Guerra S; Deschenaux R

2011-01-01

400

Accordion-optimized DEPT experiments.  

Science.gov (United States)

In this contribution, a pulse sequence is described for recording accordion-optimized DEPT experiments. The proposed ACCORDEPT experiment detects a wide range of one-bond coupling constants using accordion optimization. As a proof of concept, this strategy has been applied to a mesogen containing a large range of one-bond (1)J(CH) coupling constants associated with the various structural elements. The ACCORDEPT experiment afforded significant enhancements for the resonances with the larger (1)J(CH) couplings, similar SNR for aliphatic resonances, but reduced SNR for aliphatic resonances as compared with the standard DEPT experiment. In addition, the ACCORDEPT is straightforward to implement, does not require any supplementary calibration procedures and can be used under automated conditions without difficulty by inexperienced users. PMID:21162137

Furrer, Julien; Guerra, Sebastiano; Deschenaux, Robert

2010-11-29

 
 
 
 
401

Accordion-optimized DEPT experiments.  

UK PubMed Central (United Kingdom)

In this contribution, a pulse sequence is described for recording accordion-optimized DEPT experiments. The proposed ACCORDEPT experiment detects a wide range of one-bond coupling constants using accordion optimization. As a proof of concept, this strategy has been applied to a mesogen containing a large range of one-bond (1)J(CH) coupling constants associated with the various structural elements. The ACCORDEPT experiment afforded significant enhancements for the resonances with the larger (1)J(CH) couplings, similar SNR for aliphatic resonances, but reduced SNR for aliphatic resonances as compared with the standard DEPT experiment. In addition, the ACCORDEPT is straightforward to implement, does not require any supplementary calibration procedures and can be used under automated conditions without difficulty by inexperienced users. Copyright © 2010 John Wiley & Sons, Ltd.

Furrer J; Guerra S; Deschenaux R

2010-11-01

402

Cosmological experiments in superfluid helium  

International Nuclear Information System (INIS)

The author discusses the analogy between cosmological strings and vortex lines in a superfluid, and suggests a cryogenic experiment which tests key elements of the cosmological scenario for string formation. (author).

1985-01-01

403

NASA solar array flight experiment  

Energy Technology Data Exchange (ETDEWEB)

The NASA large flexible solar array space shuttle flight experiment is described. The 32 x 4 m wing is deployed from the shuttle bay, and experiments in electrical output, multiple deployment, and structural dynamics are planned. Both 2 x 4 cm and 5.9 x 5.9 cm cell assemblies on the array blanket are evaluated. Safety/hazards provisions are described, including emergency jettison provisions. Ground testing and hardware fabrication are summarized.

Turner, G.; Hill, H.

1982-06-01

404

Experiments with a quartz resonator  

Science.gov (United States)

Experiments with a quartz resonator are described: (i) the frequency response, the quality factor, and the transient processes; (ii) the temperature dependence of the resonance frequency; and (iii) the parameters of the equivalent impedance. A popular quartz resonator designed for generating oscillations of frequency 32?768 Hz (= 215) serves as an example. A new data-acquisition system from PASCO Scientific is used for the measurements. The experiments employ 1 ppm frequency resolution, but are well suited for undergraduate laboratories.

Kraftmakher, Yaakov

2013-09-01

405

Transpersonal Psychology: Mapping Spiritual Experience  

Directory of Open Access Journals (Sweden)

Full Text Available The first Journal of Transpersonal Psychology was published in 1969. Since this signal event, transpersonal psychology has emerged as a field of theory and application. A way has been made in Western psychology for the appreciation and study of interior subjective awareness, the domain of spiritual experience. One of the most recent contributions, the Wilber-Combs Lattice, offers a typology to account for both developmental processes throughout the human life span, as well as different qualities of spiritual experience.

Dwight Judy

2011-01-01

406

Handbook of critical experiments benchmarks  

International Nuclear Information System (INIS)

[en] Data from critical experiments have been collected together for use as benchmarks in evaluating calculational techniques and nuclear data. These benchmarks have been selected from the numerous experiments performed on homogeneous plutonium systems. No attempt has been made to reproduce all of the data that exists. The primary objective in the collection of these data is to present representative experimental data defined in a concise, standardized format that can easily be translated into computer code input

1978-01-01

407

Electron cooling experiments at INS  

Energy Technology Data Exchange (ETDEWEB)

An electron cooling device with a maximum energy of 110 keV was designed and constructed. The device was installed in the TARN II storage ring and electron cooling experiments have been performed for light ions. In this article, the design, construction and off-line electron beam test of the cooling device are presented. Then the electron cooling experiments on proton and the electron capture studies on H{sup +}{sub 2} are described. (orig.).

Tanabe, T.; Noda, K.; Honma, T.; Kodaira, M.; Chida, K.; Watanabe, T.; Noda, A.; Watanabe, S.; Mizobuchi, A.; Yoshizawa, M.; Katayama, T.; Muto, H. (Tokyo Univ., Tanashi (Japan). Inst. for Nuclear Study); Ando, A. (Osaka Univ., Ibaraki (Japan). Research Center for Nuclear Physics)

1991-09-15

408

Synesthetic experiences enhance unconscious learning.  

UK PubMed Central (United Kingdom)

Synesthesia  is characterized  by consistent extra perceptual experiences in response to normal sensory input. Recent studies provide evidence for a specific profile of enhanced memory performance in synesthesia, but focus exclusively on explicit memory paradigms for which the learned content is consciously accessible. In this study, for the first time, we demonstrate with an implicit memory paradigm that synesthetic experiences also enhance memory performance relating to unconscious knowledge.

Rothen N; Scott RB; Mealor AD; Coolbear DJ; Burckhardt V; Ward J

2013-10-01

409

Status of the RICE Experiment  

Energy Technology Data Exchange (ETDEWEB)

The RICE experiment (Radio Ice Cherenkov Experiment) at South Pole consists of an array of dipole antennas designed to detect the coherent radio frequency radiation produced by neutrino-induced showers in the Antarctic ice. We report updated limits on the ultra-high energy neutrino flux, based on RICE data taken between 2000 an 2005. These limits also reflect improvements in Monte Carlo simulations and detector modeling.

Besson, Dave Z [U. of Kansas Department of Physics and Astronomy, Lawrence, KS 66045-2151 (United States)

2007-09-15

410

Kochen-Specker Meets Experiments  

Science.gov (United States)

The assumption of non-contextuality is, in some scenarios, not only physically ``plausible,'' but unavoidable for any realistic theory without instantaneous actions. Any realistic non-contextual theory must satisfy some inequalities for the correlations of compatible (commeasurable) measurements, which are violated by any quantum state. Actual experiments can reveal this state-independent violation. We discuss the requirements and the advantages of these experiments.

Cabello, Adán

2009-03-01

411

NA59 experiment at CERN  

CERN Document Server

Na59 Experiment at CERN-SPS aims for obtaining circularly polarized high energy photons (~100 GeV) starting from an unpolarized electron beam. The basic principle of operation was predicted in 1962 by Cabbibo and has remained untested up to now. Among other physics goals, the Na59 collaboration investigates usage of crystals for high energy photon polarimetry. This paper presents the experiment and summarizes some of the results obtained as of Autumn 2000. (5 refs).

Ünel, G; Avakian, R O; Ballestrero, S; Biino, C; Cenci, P; Connell, S H; Eichblatt, S; Fonseca, T; Freund, A; Gianoli, A; Gross, R; Gorini, B; Ispirian, K A; Ketel, T; López, A; Luitz, S; Mikkelsen, U; Menichetti, E; Perego, A; Van Rens, B; Sellschop, J P Friedel; Sona, P; Strakhovenko, V M; Uggerhøj, Erik; Velasco, M; Vilakazi, Z Z; Wessely, O

2001-01-01

412

Status of the CHORUS experiment  

International Nuclear Information System (INIS)

The CHORUS experiment aims at the detection of ?? ? ?? oscillations through the observation of ?? induced interactions in the CERN SPS Wide Band Neutrino Beam. The ?? identification is performed in nuclear emulsions. The experiment has been running in 94 and 95 and will continue to take data in 96 and 97. A brief description of the apparatus and the status of the data collection are given. (author)

1996-01-01

413

Activation Experiments for Nuclear Astrophysics  

International Nuclear Information System (INIS)

The study of (?,n) reactions can be used to constrain the theoretical predictions of the neutron capture cross sections of short-lived branching points in the s process. The usability of the activation technique to study these (?,n) reactions is discussed as one example of an activation experiment in nuclear astrophysics. Two photon sources using bremsstrahlung and laser-Compton backscattered photons where such experiments were carried out are compared.

2009-01-28

414

GCFR thermal-hydraulic experiments  

International Nuclear Information System (INIS)

The thermal-hydraulic experimental studies performed and planned for the Gas-Cooled Fast Reactor (GCFR) core assemblies are described. The experiments consist of basic studies performed to obtain correlations, and bundle experiments which provide input for code validation and design verification. These studies have been performed and are planned at European laboratories, US national laboratories, Universities in the US, and at General Atomic Company

1980-06-06

415

Grammar: From Experience to Language  

Directory of Open Access Journals (Sweden)

Full Text Available This paper attempts to address the nature of language grammar from the perspective of personal experience. Personal experience refers to whatever an individual, situated in a particular life status and equipped with certain innate mental and physical capacities, obtains in his interaction with the natural and socio-cultural surroundings, including various events that he has experienced, knowledge that he has acquired, feelings and emotions that he has gone through, cognitive abilities that he has developed, and whatever that makes him differ from what he was and that will contribute to later processes of his experience acquisition. Personal experience is an individual’s lived experience, which enables him to understand the world, to understand what language means, and to behave appropriately in social and verbal communication. With the lived personal experience, an individual can come up with an appropriate communicative notion in a certain communicative context. The communicative notion is the consciousness or intentionality that the individual intends to communicate with the person to be addressed in the context. The communicative notion has its own meaningful structure, from which language grammar originates and develops in the process of serving the purpose of the communicative notion. Grammar is the realization of the communicative notion through the expression of language.

Zhongxin Dai; Jun Liu

2013-01-01

416

Casimir experiments showing saturation effects  

CERN Multimedia

We address several different Casimir experiments where theory and experiment disagree. First out is the classical Casimir force measurement between two metal half spaces; here both in the form of the torsion pendulum experiment by Lamoreaux and in the form of the Casimir pressure measurement between a gold sphere and a gold plate as performed by Decca et al.; theory predicts a large negative thermal correction, absent in the high precision experiments. The third experiment is the measurement of the Casimir force between a metal plate and a laser irradiated semiconductor membrane as performed by Chen et al.; the change in force with laser intensity is larger than predicted by theory. The fourth experiment is the measurement of the Casimir force between an atom and a wall in the form of the measurement by Obrecht et al. of the change in oscillation frequency of a 87 Rb Bose-Einstein condensate trapped to a fused silica wall; the change is smaller than predicted by theory. We show that saturation effects can exp...

Sernelius, Bo E

2009-01-01

417

Neutron-antineutron conversion experiments  

International Nuclear Information System (INIS)

A great deal of attention has been given in this workshop to proton decay experiments. These experiments look for a violation of baryon number ?B = 1, as predicted by Grand Unified Theories. There are many experiments searching for proton decay in deep mines and tunnels, all over the world. Some are in progress, others expect to start operating soon, and although clear positive evidence is still lacking second generation experiments are being actively proposed. All are being followed with great interest for the evidence they should provide about the validity and the nature of these theories. There is another class of experiments which bears on the same question in a different way. These also search for a violation of baryon number, but with ?B = 2. With ?B = 2 the spontaneous conversion of a neutron to an antineutron becomes possible. In a number of unified theories the predicted rate of neutron ? anti neutron conversion is within the range of experimental possibility. These experiments are reviewed.

1982-04-17

418

Electron cooling experiments at LEAR  

International Nuclear Information System (INIS)

In 1987, after a longer phase of development this frist cooler to be used in routine operation in a storage ring was built into LEAR. Thereafter cooling experiments with 6, 10, 21 and 50 MeV protons, and later on (1989) also with antiprotons, were successfully performed; the number of stored ions was some 107 to 5x109, typically. In this paper the performance of the experiments is described and the results of all cooling experiments are summarized. First of all the theory of electron cooling is described, whereby, amongst other things, the enhancement of the friction (cooling) force due to the solenoidal magnetic field is explained and whereby a possible difference in the friction force for protons and antiprotons is discussed. Thereafter a description of the LEAR cooler follows, especially of its electronic control system, together with the computer code, as it was used during the experiments. Then the beam control and diagnostic equipment is summarized, which could be used during the cooling experiments to prepare the ion beam and to determine its equilibrium properties and the friction force, respectively. Especially the analysis of the Schottky signals which showed an unusual behaviour in the case of a cold beam is explained in more detail. After describing the optimization of the cooling the presentation of the results of all cooling experiments follows. (orig./HSI).

1990-01-01

419

Southern Ocean Iron Experiment (SOFex)  

Energy Technology Data Exchange (ETDEWEB)

The Southern Ocean Iron Experiment (SOFeX) was an experiment decades in the planning. It's implementation was among the most complex ship operations that SIO has been involved in. The SOFeX field expedition was successful in creating and tracking two experimentally enriched areas of the Southern Ocean, one characterized by low silicic acid, one characterized by high silicic acid. Both experimental sites were replete with abundant nitrate. About 100 scientists were involved overall. The major findings of this study were significant in several ways: (1) The productivity of the southern ocean is limited by iron availability. (2) Carbon uptake and flux is therefore controlled by iron availability (3) In spite of low silicic acid, iron promotes non-silicious phytoplankton growth and the uptake of carbon dioxide. (4) The transport of fixed carbon from the surface layers proceeds with a C:N ratio that would indicate differential remineralization of nitrogen at shallow depths. (5) These finding have major implications for modeling of carbon export based on nitrate utilization. (6) The general results of the experiment indicate that, beyond other southern ocean enrichment experiments, iron inputs have a much wider impact of productivity and carbon cycling than previously demonstrated. Scientific presentations: Coale, K., Johnson, K, Buesseler, K., 2002. The SOFeX Group. Eos. Trans. AGU 83(47) OS11A-0199. Coale, K., Johnson, K. Buesseler, K., 2002. SOFeX: Southern Ocean Iron Experiments. Overview and Experimental Design. Eos. Trans. AGU 83 (47) OS22D-01. Buesseler, K.,et al. 2002. Does Iron Fertilization Enhance Carbon Sequestration? Particle flux results from the Southern Ocean Iron Experiment. Eos. Trans. AGU 83 (47), OS22D-09. Johnson, K. et al. 2002. Open Ocean Iron Fertilization Experiments From IronEx-I through SOFeX: What We Know and What We Still Need to Understand. Eos. Trans. AGU 83 (47), OS22D-12. Coale, K. H., 2003. Carbon and Nutrient Cycling During the Southern Ocean Iron Enrichment Experiments. Seattle, WA. Geological Society of America. Coale, K., 2003. Open Ocean Iron Enrichment Experiments: What they have told us, what they have not. American Society for Limnology and Oceanography and The Oceanography Society, Honolulu, February 2004. Coale, K., 2004. Recent Research from the Southern Ocean Iron Experiment (SOFeX), in Taking the Heat: What is the impact of ocean fertilization on climate and ocean ecology? Science of earth and sky. AAAS, February 12-16, Seattle, WA

Coale, Kenneth H.

2005-07-28

420

Subjective experience of early imprisonment.  

UK PubMed Central (United Kingdom)

BACKGROUND: Some say 'prison works', others say that it only harms. Overall, longitudinal studies of prisoners suggest some positive impact on mental state, but post-release recidivism is high. How do men at high risk for repeated imprisonment experience it? AIM: To explore prison (gaol) experience among men awaiting trial in custody. METHODS: In a prospective longitudinal study, 170 men were interviewed just after reception about their social context and mental state and again three weeks later, when each was asked to describe his current prison experience; 75% had been in prison before. Data were analysed qualitatively and quantitatively. RESULTS: Each man had views on his imprisonment. Data were saturated after 20 interviews. The core concern was its overall emotional impact, in full negative to positive range, with recognition that this could and did change in either direction, both passively and through active processes. Underpinning themes were along the dimensions of missing people to asylum from the outside world; in-prison bullying to positive staff and/or inmate relationships; boredom to relief in routine; and 'doing my head in' to salvation from drug-induced decline. Testing the model in the whole sample confirmed no association between prison impact and pre-prison factors. Negative experience was associated with severe depression within but not before this imprisonment. More positive experience related to good in-prison relationships. CONCLUSIONS: During pre-trial custodial detention, there is a greater range of experience than generally previously reported. The simple expedients of prison staff developing good relationships with prisoners, and facilitating these between prisoners, could be life-saving. Highly positive experiences may be more an indictment on community services than an endorsement of imprisonment.

Williams HK; Taylor PJ; Walker J; Plant G; Kissell A; Hammond A

2013-05-01

 
 
 
 
421

The ALICE Experiment Laboratory - Overview  

International Nuclear Information System (INIS)

Full text: The Laboratory is involved in research with ultrarelativistic heavy ions: the NA49 experiment at the CERN SPS and the preparation of the ALICE experiment at the CERN LHC. The aim of the NA49 experiment is to study the production of charged hadrons and charged and neutral strange particles in collisions of ultrarelativistic hadrons and nuclei with nuclear targets. Secondary particle multiplicities, single-particle spectra, two-pion correlations (boson interferometry) and the production of strangeness (?, ? and ? hyperons, ?-mesons, and both, neutral and charged, kaons), are investigated in a search for the phase transition of nuclear matter to the Quark-Gluon Plasma predicted by Lattice QCD. In fact, compelling evidence for this new state of matter was announced at CERN in February 2000, with the NA49 experiment listed among contributors to this achievement. The investigation of proton-proton and proton-nucleus collisions, initially meant merely as reference data for nucleus-nucleus collisions, evolved in recent years into a separate and very interesting field of research. ALICE (A Large Ion Collider Experiment) is a dedicated detector for heavy ion physics at the LHC whose goal is to pursue similar research at much higher energies. The LHC is expected to deliver lead ion beams colliding at the centre-of-mass energy of 5.5 A TeV. The experiment was approved by the CERN Management on February 6, 1997 and should be on the floor in the year 2006, when the LHC is expected to enter into operation. A more detailed description of our activities in both experiments can be found in three short articles below. (author)

2001-01-00

422

Retail Choice Experiments: Comparing Early-AdopterExperience  

Energy Technology Data Exchange (ETDEWEB)

This paper reviews the experience with retail choice of non-residential electricity customers during the period from early 1998 through the first few months of 2000. Key findings include: (1) customers in California received a significantly smaller discount from utility tariffs than customers in other competitive markets; (2) this sample of large commercial/industrial customers believed they were benefiting significantly more from commodity savings from contracts with retail electricity service providers (RESP) than from value-added services; and,(3) market rules appear to be critical to customer experiences with retail competition, yet the relationship between market rules and market development is inadequately understood.

Golove, William

2003-03-01

423

Free-electron laser experiments in the microwave tokamak experiment  

Energy Technology Data Exchange (ETDEWEB)

Microwave pulses have been injected from a free electron-laser (FEL) into the Microwave Tokamak Experiment (MTX) at up to 0.2 GW at 140 GHz in short pulses (10-ns duration) with O-mode polarization. The power transmitted through the plasma was measured in a first experimental study of high power pulse propagation in the plasma; no nonlinear effects were found at this power level. Calculations indicate that nonlinear effects may be found at the higher power densities expected in future experiments. 9 refs., 2 figs.

Allen, S.L.; Brown, M.D.; Byers, J.A.; Casper, T.A.; Cohen, B.I.; Cohen, R.H.; Cummings, J.C.; Fenstermacher, M.E.; Foote, J.H.; Hooper, E.B.; Jong, R.A.; Langdon, A.B.; Lasinski, B.F.; Lasnier, C.J.; Matsuda, Y.; Meyer, W.H.; Moller, J.M.; Nexsen, W.E.; Rice, B.W.; Rognlien, T.D.; Smith, G.R.; Stallard, B.W.; Thomassen, K.I.; Throop, A.L.; Turner, W.C.; Wood, R.D. (Lawrence Livermore National Lab., CA (USA)); Cook, D.R.

1990-08-01

424

Los Alamos beam halo experiment: comparing theory, simulation and experiment.  

Energy Technology Data Exchange (ETDEWEB)

We compare macroparticle simulations with measurements from a proton beam-halo experiment in a 52-quadrupole periodic-focusing channel. Three different initial distributions with the same Courant-Snyder parameters and emittances, but different shapes, predict different beam profiles in the transport system. Input distributions with greater population in the tails produce larger rates of emittance growth, a result that is qualitatively consistent with the particle-core model of halo formation in mismatched beams. The simulations underestimate the growth rate of halo and emittance for mismatched beams. Better agreement between simulations and experiment may require an input distribution that represents more accurately the tails of the real input beam.

Wangler, Thomas P.,; Qiang, J. (Ji)

2002-01-01

425

Free-electron laser experiments in the microwave tokamak experiment  

International Nuclear Information System (INIS)

Microwave pulses have been injected from a free electron-laser (FEL) into the Microwave Tokamak Experiment (MTX) at up to 0.2 GW at 140 GHz in short pulses (10-ns duration) with O-mode polarization. The power transmitted through the plasma was measured in a first experimental study of high power pulse propagation in the plasma; no nonlinear effects were found at this power level. Calculations indicate that nonlinear effects may be found at the higher power densities expected in future experiments. 9 refs., 2 figs

1990-01-01

426

The Knee: Theory and Experiment  

International Nuclear Information System (INIS)

[en] A review of current status of theoretical paradigm and results of direct and indirect experiments to study cosmic rays through the knee region are presented and discussed. There is general agreement that the knee is around a PeV and that it reflects a rigidity cutoff. The composition of cosmic rays in the knee region is mixed and changing with energy. The two direct experiments, JACEE and RUNJOB with measurements in the 100 TeV per particle to 1000 TeV per particle and with similar exposures do not agree. While JACEE indicates a increase in (lnA) from its low energy value of 1.5 to a value closer to 3 , the RUNJOB experiment sees no change in the composition albeit with large uncertainty. Of the indirect experiments, KASKADE, SPASEAMANDA, HEGRA-Airobic, CACTI, TUNKA and Tibet favor ''Heavy'' composition above the knee and beyond. The KASKADE energy range extends to 100 PeV where their analysis indicates iron dominance. KASKADE does not see a proton rigidity cutoff until about 3 PeV, while Tibet measures a steepening of the proton slope at a few hundred TeV. BLANCA and DICE favor little composition change or a change towards a proton dominated composition around 10 PeV. We need experiments with much better mass resolution in the energy range of the knee and a more quantitative understanding of the hadron production in the forward region at these energies to make definitive progress

2006-01-01

427

High velocity impact experiment (HVIE)  

Energy Technology Data Exchange (ETDEWEB)

The HVIE space project was conceived as a way to measure the absolute EOS for approximately 10 materials at pressures up to {approximately}30 Mb with order-of-magnitude higher accuracy than obtainable in any comparable experiment conducted on earth. The experiment configuration is such that each of the 10 materials interacts with all of the others thereby producing one-hundred independent, simultaneous EOS experiments The materials will be selected to provide critical information to weapons designers, National Ignition Facility target designers and planetary and geophysical scientists. In addition, HVIE will provide important scientific information to other communities, including the Ballistic Missile Defense Organization and the lethality and vulnerability community. The basic HVIE concept is to place two probes in counter rotating, highly elliptical orbits and collide them at high velocity (20 km/s) at 100 km altitude above the earth. The low altitude of the experiment will provide quick debris strip-out of orbit due to atmospheric drag. The preliminary conceptual evaluation of the HVIE has found no show stoppers. The design has been very easy to keep within the lift capabilities of commonly available rides to low earth orbit including the space shuttle. The cost of approximately 69 million dollars for 100 EOS experiment that will yield the much needed high accuracy, absolute measurement data is a bargain!

Toor, A.; Donich, T.; Carter, P.

1998-02-01

428

Optimizing New Dark Energy Experiments  

Energy Technology Data Exchange (ETDEWEB)

Next generation “Stage IV” dark energy experiments under design during this grant, and now under construction, will enable the determination of the properties of dark energy and dark matter to unprecedented precision using multiple complementary probes. The most pressing challenge in these experiments is the characterization and understanding of the systematic errors present within any given experimental configuration and the resulting impact on the accuracy of our constraints on dark energy physics. The DETF and the P5 panel in their reports recommended “Expanded support for ancillary measurements required for the long-term program and for projects that will improve our understanding and reduction of the dominant systematic measurement errors.” Looking forward to the next generation Stage IV experiments we have developed a program to address the most important potential systematic errors within these experiments. Using data from current facilities it has been feasible and timely to undertake a detailed investigation of the systematic errors. In this DOE grant we studied of the source and impact of the dominant systematic effects in dark energy measurements, and developed new analysis tools and techniques to minimize their impact. Progress under this grant is briefly reviewed in this technical report. This work was a necessary precursor to the coming generations of wide-deep probes of the nature of dark energy and dark matter. The research has already had an impact on improving the efficiencies of all Stage III and IV dark energy experiments.

Tyson, J. Anthony [University of California, Davis

2013-08-26

429

Rare K-decay experiments  

International Nuclear Information System (INIS)

There have been a proposal (accepted - E777) and a letter-of-intent to search for K+ ? ?+?+e- to a branching ratio better than 10-11. This motivation is to test different types of lepton number conservation - specifically, there is a boson in technicolor models which would allow such decays at a level around 10-10. This note discusses the E777 experiment, reasons for doing the experiment at the AGS, and the prospects for looking for even smaller branching ratios. A level of B.R. -9 (90% C.L.) for K+ ? ?+?+e- was achieved in a CERN experiment designed to study Ke4 decay. That experiment used a separated 8 x 104/pulse K+ beam with a PWC/spark chamber detector and no muon identification. E777 will use an unseparated beam with 2 x 107K+/pulse, PWCs, and muon identification. Cherenkovs will be designed to not misidentify particles, at a reduced efficiency. For example, two counters will be filled with H2 gas at atmospheric pressure to identify electrons. This reduces delta-ray contamination, at a cost of reduced efficiency for identifying the electrons. They chose a K+ momentum of 6 Gev/c (and, thus, to do the experiment at the AGS) for good particle identification

1982-07-16

430

Free-flyer biostack experiment  

Energy Technology Data Exchange (ETDEWEB)

The free-flyer biostack experiment is part of a radiobiological space research program that includes experiments in space as well as in accelerators on Earth. The program has been specially designed to increase knowledge concerning the importance, effectiveness, and hazards of the structured components of cosmic radiation to man and to any biological specimen in space. Up to now, our understanding of the ways in which HZE particles might affect biological matter is based on a few spaceflight experiments from the last Apollo missions and on the limited data available from heavy-ion irradiation from accelerators. In the near future, accelerators capable of accelerating particles up to higher atomic numbers and higher energies will promote increased activity in ground-based studies on biological effects of HZE particles. Comparison of data from such irradiation experiments on Earth with those from an actual spaceflight experiment will show any potential influence of the inevitably attendant spaceflight factors (e.g., weightlessness) on the radiobiological events.

Buecker, H.

1984-02-01

431

The upgraded Pegasus Toroidal Experiment  

International Nuclear Information System (INIS)

The Pegasus Toroidal Experiment was developed to explore the physics limits of plasma operation as the aspect ratio (A) approaches unity. Initial experiments on the device found that access to high normalized current and toroidal beta was limited by the presence of large-scale tearing modes. Major upgrades have been conducted of the facility to provide the control tools necessary to mitigate these resistive modes. The upgrades include new programmable power supplies, new poloidal field coils and increased, time-variable toroidal field. First ohmic operations with the upgraded system demonstrated position and current ramp-rate control, as well as improvement in ohmic flux consumption from 2.9 MA Wb-1 to 4.2 MA Wb-1. The upgraded experiment will be used to address three areas of physics interest. First, the kink and ballooning stability boundaries at low A and high normalized current will be investigated. Second, clean, high-current plasma sources will be studied as a helicity injection tool. Experiments with two such sources have produced toroidal currents three times greater than predicted by geometric field line following. Finally, the use of electron Bernstein waves to heat and drive current locally will be studied at the 1 MW level; initial modelling indicates that these experiments are feasible at a frequency of 2.45 GHz.

2006-01-01

432

The Mu2e Experiment  

Science.gov (United States)

While Charged Lepton Flavor Violating processes are heavily suppressed in the Standard Model, the rate of these reactions are enhanced to levels accessible to the next generation of experiments in many scenarios of New Physics. The Mu2e experiment is designed to search for neutrinoless muon-to-electron conversion in the Coulomb field of a nucleus with expected sensitivity of 6x10-17 at 90% confidence level. Such sensitivity, about four orders of magnitude below the current limits, will allow Mu2e to probe mass scales of New Physics up to 1000-10000 TeV, far above the range directly accessible at the LHC. We briefly describe the Mu2e experiment and its physics goals.

Echenard, Bertrand

2013-04-01

433

Preparatory experiment for space utilization  

Energy Technology Data Exchange (ETDEWEB)

Preparatory experiment to generate microgravity can be carried out by using a falling tower, airplane, small rocket, free flyer and space shuttle. This paper introduced a simple method to evaluate phenomena under microgravity in order to effectively proceed researches utilizing the space. The most important parameter to evaluate the experimenral measures is the quality of microgravity and the duration. The method to simply estimating the effect is the Order of Magnitude Analysis using the hydrodynamic dimensionless number. This method is effective to determine the gravity level and duration when selecting a preliminary experiment. Different from phenomena requiring several hours such as diffusion, solidification and building of stationary convection, Marangoni convection and phase separation are thought to become constant for s comparatively short time and can be confirmed sufficiently by the preliminary experiment. 5 refs., 2 tabs.

Ishikawa, Masamichi (Mitsubishi Research Inst. Inc., Tokyo, (Japan))

1989-10-05

434

Experiment demonstrating skeletal muscle biomechanics.  

UK PubMed Central (United Kingdom)

Many students have limited opportunities to develop scientific expertise. This is caused, in part, by the scarcity of scientific educational materials and the expense of supplies and equipment. To address these concerns, we developed an inexpensive laboratory experience that introduces students to the scientific process. Our objective was to create an interactive experiment that requires minimal equipment. To this end, we created an exercise that examines muscle biomechanics. The students conduct a hands-on experiment as researchers and as subjects by investigating the physiological concepts of muscle biomechanics using only supplies that can be found at any school. Questions are interspersed throughout the text to highlight key principles and challenge student thinking on the important concepts. This exercise not only provides an opportunity for students to interact and discuss the important physiological principles but also provides a window through which students may see a future in science.

DiCarlo SE; Sipe E; Layshock JP; Varyani S

1998-12-01

435

Results of bentonite grouting experiment  

International Nuclear Information System (INIS)

The Bentonite grouting, which will not solidify, is mainly expected to reduce the hydraulic conductivity of underground water in the expected damage zone by filling the fractures or cracks, so the evaluation of the degree of hydraulic conductivity, stability and the improvement area becomes important. The study and basic experiments for sealing of the adits have been promoted, up to now, from the aspects of the characteristics and long term stability of candidate materials, and design and construction (Pusch et al., 1987; Tanai and Masuda, 1991). However, in Japan, the application examples of clay type materials for grouting are extremely few and is limited to the construction experience of the national oil underground storage at Kuji (Miyanaga and Ebara, 1993), with the exception of some test cases (Boergesson et al., 1991) from overseas. This report summarize basic characteristics of the clay type material relevant to the hydraulic conductivity, from the result of the clay grouting experiment conducted at the rock site. (author)

1999-01-01

436

Solar neutrino experiments: An update  

International Nuclear Information System (INIS)

The situation in solar neutrino physics has changed drastically in the past few years, so that now there are four neutrino experiments in operation, using different methods to look at different regions of the solar neutrino energy spectrum. These experiments are the radiochemical 37Cl Homestake detector, the realtime Kamiokande detector, and the different forms of radiochemical 71Ga detectors used in the GALLEX and SAGE projects. It is noteworthy that all of these experiments report a deficit of observed neutrinos relative to the predictions of standard solar models (although in the case of the gallium detectors, the statistical errors are still relatively large). This paper reviews the basic principles of operation of these neutrino detectors, reports their latest results and discusses some theoretical interpretations. The progress of three realtime neutrino detectors that are currently under construction, SuperKamiok, SNO and Borexino, is also discussed

1993-01-01

437

Improving the Drupal User Experience  

Directory of Open Access Journals (Sweden)

Full Text Available Drupal is a powerful, but complex, Web Content Management System, being adopted by many libraries. Installing Drupal typically involves adding additional modules for flexibility and increased functionality. Although installing additional modules does increase functionality, it inevitably complicates usability. At the University of Houston Libraries, the Web Services department researched what modules work well together to accomplish a simpler interface while simultaneously providing the flexibility and advanced tools needed to create a successful user experience within Drupal. This article explains why particular modules were chosen or developed, how the design enhanced the user experience, how the CMS architecture was created, and how other library systems were integrated into Drupal.

Rachel Vacek; Sean Watkins; Christina M. Morris; Derek Keller

2010-01-01

438

DoubleChooz: Experiment Status  

International Nuclear Information System (INIS)

[en] The Double Chooz experiment will use electron antineutrinos produced by the Chooz nuclear power station to search for a non-vanishing value of the ?13 neutrino mixing angle. Double Chooz will be the first in a series of new generation reactor neutrino experiments using identical detectors at different distances from the neutrino source to reduce the systematic error due to uncertainties of the neutrino flux and the detector acceptance. The far detector is expected to be operative by the beginning of 2010. Installation of the near detector will follow and is expected to be completed by the beginning of 2011.

2010-03-30

439

NOM removal technologies – Norwegian experiences  

Directory of Open Access Journals (Sweden)

Full Text Available The paper gives an overview of the methods for removal of natural organic matter (NOM) in water, particularly humic substances (HS), with focus on the Norwegian experiences. It is demonstrated that humic substances may be removed by a variety of methods, such as; molecular sieving through nanofiltration membranes, coagulation with subsequent floc separation (including granular media or membrane filtration), oxidation followed by biofiltration and sorption processes including chemisorption (ion exchange) and physical adsorption (activated carbon). All these processes are in use in Norway and the paper gives an overview of the operational experiences.

H. Ødegaard; S. Østerhus; E. Melin; B. Eikebrokk

2010-01-01

440

TRIGA Accelerator Driven Experiment (TRADE)  

International Nuclear Information System (INIS)

[en] This short report is derivated from the TRADE FINAL FEASIBILITY REPORT (March 2002) that is the result of the collective effort of a Working Group composed by ENEA, CEA, CERN, ANSALDO under Carlo Rubbia (ENEA) and Massimo Salvatores (CEA) supervision. The TRADE experiment, to be performed in the TRIGA reactor of the ENEA Casaccia Centre consists in the coupling of an external proton accelerator to a target to be installed in the Central thimble of the reactor scrammed to sub-criticality. This pilot experiment, aimed at a global demonstration of the ADS concept, is based on an original idea of Carlo Rubbia, presented at CEA in October 2000. (author)

2002-01-01

 
 
 
 
441

Thermomigration experiment on board EURECA  

Science.gov (United States)

Results of thermomigration measurements in liquid tin performed on board EURECA (experiment MF067) are presented. The aims of the experiment were to measure the thermomigration coefficients of gold and of some Tin isotopes in Sn-Au alloys and more generally, to complete the previous results obtained in Spacelab flights of 1983 (FSLP) and 1985 (D1). As in those previous flights, the ``shear cell'' technique, allowing a division of the sample in the liquid state, was used. The completion of those results will allow to determine the systems for which microgravity measurements are mandatory.

Praizey, J. P.; van Vaerenberg, S.; Garandet, J. P.

1995-08-01

442

The Lead Radius Experiment PREX  

Energy Technology Data Exchange (ETDEWEB)

The proposed PREX experiment at Jefferson Lab will measure the parity-violating electroweak asymmetry in the elastic scattering of polarized electrons at an energy of 850 MeV and a scattering angle of 6 degrees. Since the Z0 boson couples mainly to neutrons, this asymmetry provides a clean measurement of R{sub n} with a projected experimental precision of 1 %. In addition to being a fundamental test of nuclear theory, a precise measurement of R{sub n} pins down the density dependence of the symmetry energy of neutron rich nuclear matter which has impacts on neutron star structure, heavy ion collisions, and atomic parity violation experiments.

Robert Michaels

2006-10-02

443

The Lead Radius Experiment PREX  

International Nuclear Information System (INIS)

The proposed PREX experiment at Jefferson Lab will measure the parity-violating electroweak asymmetry in the elastic scattering of polarized electrons at an energy of 850 MeV and a scattering angle of 6 degrees. Since the Z0 boson couples mainly to neutrons, this asymmetry provides a clean measurement of Rn with a projected experimental precision of 1 %. In addition to being a fundamental test of nuclear theory, a precise measurement of Rn pins down the density dependence of the symmetry energy of neutron rich nuclear matter which has impacts on neutron star structure, heavy ion collisions, and atomic parity violation experiments.

2006-01-01

444

First tests of CELESTE experiment  

International Nuclear Information System (INIS)

The initial test phase of the CELESTE experiment operated from October 1996 to February 1997. Two groups of three heliostats were used to reflect Cherenkov photons onto two secondary mirrors in the central tower. Fast photomultipliers in the focal plane of these secondary mirrors each 'see' only a single heliostats, allowing six-fold coincidences. We have studied coincidence rates as a function of the heliostats pointing altitude and as a function of the phototube (i.e. heliostats) threshold in photoelectrons. Pulse shape analysis and the event triggering will be a critical point and originality of the experiment

1997-01-01

445

Status of the CHORUS experiment  

Energy Technology Data Exchange (ETDEWEB)

The CHORUS experiment aims at the detection of {nu}{sub {mu}} {yields} {nu}{sub {tau}} oscillations through the observation of {nu}{sub {tau}} induced interactions in the CERN SPS Wide Band Neutrino Beam. The {nu}{sub {tau}} identification is performed in nuclear emulsions. The experiment has been running in 94 and 95 and will continue to take data in 96 and 97. A brief description of the apparatus and the status of the data collection are given. (author) 3 refs.

Dore, U. [Rome Univ. (Italy). Dipt. di Fisica]|[Istituto Nazionale di Fisica Nucleare, Roma (Italy); CHORUS Collaboration

1996-12-31

446

The Second Generation HAPPEx Experiments  

Energy Technology Data Exchange (ETDEWEB)

The HAPPEx-II experiment at Thomas Jefferson National Accelerator Facility measures the parity-violating helicity-correlated scattering asymmetry APV in elastic electron scattering from 1H and 4He. These measurements explore the strange quark contributions to the electric and magnetic vector form factors View the MathML source and View the MathML source of the nucleon. An introduction to the experimental technique and preliminary results from an initial run of these experiments in summer 2004 are presented.

Paschke, Kent

2005-06-01

447

The Second Generation HAPPEx Experiments  

International Nuclear Information System (INIS)

[en] The HAPPEx-II experiment at Thomas Jefferson National Accelerator Facility measures the parity-violating helicity-correlated scattering asymmetry APV in elastic electron scattering from 1H and 4He. These measurements explore the strange quark contributions to the electric and magnetic vector form factors View the MathML source and View the MathML source of the nucleon. An introduction to the experimental technique and preliminary results from an initial run of these experiments in summer 2004 are presented.

2005-01-01

448

Experiments on the ISIS synchrotron  

Energy Technology Data Exchange (ETDEWEB)

Injection and acceleration studies on the ISIS synchrotron are described. Though HIF related experiments have not been undertaken on ISIS, aspects of machine performance relevant for HIF are discussed, such as coasting beam instabilities and bunch formation. Recently, some rapid growth of beam has been observed shortly after injection which might be due to the longitudinal microwave instability. It is planned to study this topic as a HIF related experiment in the Fall of 1986, while operating the synchrotron as a 70.4 MeV proton storage ring.

Rees, G.H.

1986-01-21

449

Experiments in the HAW project  

International Nuclear Information System (INIS)

This data report is the eighth of a series intended to document the data obtained from the HAW in situ experiment (at Asse) and to make these data available to potential users. During this experiment a considerable number of thermocouples was damaged so that their signals are lost. In some cases it resulted in plots with no signal but empty frames. In the previous report we tried to change our procedure and remove these frames from the report. This action was not completely successful because, as it turned out, also some of the not empty plots were removed wrongly as well. (orig.)

1993-01-01

450

CANDU reactors. Experience and innovation  

International Nuclear Information System (INIS)

The title of this paper highlights two key considerations which must be properly balanced through good management in the evolution of any engineering product. Excessive reliance on experience will lead to product stagnation; excessive reliance on innovation will often lead to an unsatisfactory product, at least in the first generation of this product. To illustrate this balancing process, the paper reviews CANDU evolution and experience and the balance between proveness and innovation achieved through management of the evolution process from early prototypes to today's large-scale commercial units. A forecast of continuing evolutionary directions is included

1989-01-01

451

High-quality visual experience  

CERN Document Server

Last few years have seen rapid acceptance of high-definition television (HDTV) technology around the world. This technology has been hugely successful in delivering more realistic television experience at home and accurate imaging for professional applications. Adoption of high definition continues to grow as consumers demand enhanced features and greater quality of content. Following this trend, natural evolution of visualisation technologies will be in the direction of fully realistic visual experience and highly precise imaging. However, using the content of even higher resolution and quali

Mrak, Marta; Kunt, Murat

2010-01-01

452

Schedule and status of irradiation experiments  

Energy Technology Data Exchange (ETDEWEB)

To provide an updated summary of the status of irradiation experiments for the neutron-interactive materials program. The current status of reactor irradiation experiments is presented in tables summarizing the experimental objectives, conditions, and schedule. Currently, the program has two irradiation experiments in reactor; and 8 experiments in the planning or design stages. Postirradiation examination and testing is in progress on 18 experiments.

Rowcliffe, A.F.; Grossbeck, M.L. [Oak Ridge National Lab., TN (United States)

1997-04-01

453

Epistemic Responsibility and Perceptual Experience  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Any theory of perceptual experience should elucidate the way humans exploit it in activities proper of responsible agents, like justifying and revising their beliefs. In this paper I examine the hypothesis that this capacity requires the positing of a perceptual awareness involving a pre-doxastic ac...

Echeverri, Santiago

454

Status of the OPERA Experiment  

International Nuclear Information System (INIS)

In this article the physics motivation and the detector design of the OPERA experiment will be reviewed. The construction status of the detector, which will be situated in the CNGS beam from CERN to the Gran Sasso laboratory, will be reported. A survey on the physics performance will be given and the physics plan in 2006 will be presented. (author)

2006-01-01

455

Lidar Atmospheric Sensing Experiment (LASE)  

Science.gov (United States)

This document discusses the use of LIDAR (Laser Infrared Detection and Ranging) to detect and map water vapor in the atmosphere. Topics include research objectives, the use of airborne and space platforms, the configuration and capabilities of the instrument, and future programs. Links to LASE image files and experiment results are included.

456

Learning More Effectively from Experience  

Digital Repository Infrastructure Vision for European Research (DRIVER)

Developing the capacity for individuals to learn effectively from their experiences is an important part of building the knowledge and skills in organizations to do good adaptive management. This paper reviews some of the research from cognitive psychology and phenomenography to present a way of thi...

Ioan Fazey; John A. Fazey; Della M. A. Fazey

457

Frustration: A common user experience  

DEFF Research Database (Denmark)

The use of computer applications can be a frustrating experience. This study replicates previous studies of the amount of time users – involuntarily – spend trying to diagnose and recover from problems they encounter while using computer applications such as web browsers, email, and text processing. In the present study, 21 users self-reported their frustrating experiences during an average of 1.72 hours of computer use. As in the previous studies the amount of time lost due to frustrating experiences was disturbing. The users spent 16% of their time trying to fix encountered problems and another 11% of their time redoing lost work. Thus, the frustrating experiences accounted for a total of 27% of the time, This main finding is exacerbated by several supplementary findings. For example, the users were unable to fix 26% of the experienced problems, and they rated that the problems recurred with a median frequency of about once a week. Experiencing the same problems repeatedly is likely to add to the frustration. The users in this study were highly experienced, precluding that frustration is only a concern for novices.

Hertzum, Morten

2010-01-01

458

Adverse Childhood Experiences and Hallucinations  

Science.gov (United States)

Objective:: Little information is available about the contribution of multiple adverse childhood experiences (ACEs) to the likelihood of reporting hallucinations. We used data from the ACE study to assess this relationship. Methods:: We conducted a survey about childhood abuse and household dysfunction while growing up, with questions about health…

Whitfield, C.L.; Dube, S.R.; Felitti, V.J.; Anda, R.F.

2005-01-01

459

The TOTEM Experiment at LHC  

CERN Multimedia

The TOTEM Experiment at the CERN LHC pp collider is here presented. After a general overview on the detector components, the main features of its physics programme, focused on the measurements of the total cross section, elastic pp scattering and diffractive phenomena, are described. These measurements will be of primary importance in order to distinguish among different models of soft proton interactions.

Latino, Giuseppe

2008-01-01

460

Language Experience Changes Subsequent Learning  

Science.gov (United States)

|What are the effects of experience on subsequent learning? We explored the effects of language-specific word order knowledge on the acquisition of sequential conditional information. Korean and English adults were engaged in a sequence learning task involving three different sets of stimuli: auditory linguistic (nonsense syllables), visual…

Onnis, Luca; Thiessen, Erik

2013-01-01

 
 
 
 
461

High-energy neutrino experiments  

International Nuclear Information System (INIS)

[en] These lectures review high-energy neutrino experiments, both from the point of view of techniques and of results. This review is intended for physicists who have already an understanding of the weak interaction as manifested in ? decay and in elementary particle decay. The level is simple and directed at experimentalists. (Auth.)

1976-12-08

462

Sparse Area Stereo Matching Experiment.  

Science.gov (United States)

The algorithm used in this experiment is considered by many to be state-of-the-art for calculating x-parrallax over rural regions. Even so, its output must be refined in sparse areas in order to meet accuracy requirements. The major result of this experim...

M. A. Crombie

1986-01-01

463

SELEX experiment (Fermilab E781)  

International Nuclear Information System (INIS)

The poster presents the physics goals and experimental status of Selex (Segmented Large X Spectrometer), supported by many international institutions which has been taking data since February 1997. The principal goal of this experiment is to have a high statistics sample of charm baryons from 650 GeV ?- and ?- beams.

1998-02-01

464

Gravity Recovery and Climate Experiment  

Science.gov (United States)

The Gravity Recovery and Climate Experiment (GRACE) mission uses twin satellites to make detailed measurements of Earth's gravity field. GRACE materials include a description of the mission, research projects, and personnel. There are also links to news articles, publications, datasets, and software tools for processing gravity data.

465

Physics and experiments at RHIC  

International Nuclear Information System (INIS)

This report discusses some of the experiments that will be held at the Brookhaven RHIC. The detectors that will be used at Brookhaven RHIC are also discussed. The main purpose in building this accelerator is to produce and detect the so-called Quark-Gluon plasma. Purposes are emphasized in this paper. 12 refs., 7 figs

1991-01-01

466

Comparing PRAs with operating experience  

Energy Technology Data Exchange (ETDEWEB)

Probabilistic Risk Assessment is widely used to estimate the frequencies of rare events, such as nuclear power plant accidents. An obvious question concerns the extent to which PRAs conform to operating experience--that is, do PRAs agree with reality? The authors discuss a formal methodology to address this issue and examine its performance using plant-specific data.

Picard, R.R.; Martz, H.F.

1998-12-01

467

Comparing PRAs with operating experience.  

Science.gov (United States)

Probabilistic Risk Assessment (PRA) is widely used to estimate the frequencies of rare events, such as nuclear power plant accidents. An obvious question concerns the extent to which PRAs conform to operating experience--that is, do PRAs agree with realit...

R. R. Picard H. F. Martz

1998-01-01

468

Operational experience with process computers  

International Nuclear Information System (INIS)

All of the nuclear power stations started up in the FRG in the last few years have been equipped with process computers. These computers do not have an active control function in the process but are used as monitoring computers. Several years of operational experience have by now been gained with these process computers. (orig./AK)

1974-10-28

469

[Perforated duodenal ulcer. Personal experience  

UK PubMed Central (United Kingdom)

Reference is made to personal experience in affirming that the treatment of perforated duodenal ulcer should set out to resolve both the perforation and the ulcer at the same time. Troncular vagotomy combined with pyroloplasty is put forward as an effective way of achieving this, and long-term results on a par with those obtained electively are described.

Trancanelli V; Natalini G; Germini F; Grilli P; Burardi F; Castori AC; Leone De Magistris C; Gerli P; Mercati U