WorldWideScience

Sample records for gran sasso lab

  1. Gran Sasso, laboratorio sigillato

    CERN Multimedia

    Di Giorgio, Claudia

    2003-01-01

    The authorities closed half of the Gran Sasso Centre and the experiments were stopped yesterday after faults were discovered in the security system in one of the three halls of the Laboratory (1 page)

  2. CNGS: Opening the way to Gran Sasso

    CERN Multimedia

    2003-01-01

    The excavation and concreting of the underground structures of the CNGS (CERN Neutrinos to Gran Sasso) project has just been completed. The way to Gran Sasso is now open and, to mark the occasion, we are publishing a special two-part Bulletin report on the CNGS project. The first part, which appears this week, covers the facility which will allow a beam of neutrinos to be sent from CERN to INFN's underground laboratory at Gran Sasso in Italy in 2006. The second part, to appear in next week's issue, will feature the two CNGS experiments, OPERA and ICARUS.

  3. The Gran Sasso muon puzzle

    CERN Document Server

    Fernandez-Martinez, Enrique

    2012-01-01

    We carry out a time-series analysis of the combined data from three experiments measuring the cosmic muon flux at the Gran Sasso laboratory, at a depth of 3800 m.w.e. These data, taken by the MACRO, LVD and Borexino experiments, span a period of over 20 years, and correspond to muons with a threshold energy, at sea level, of around 1.3 TeV. We compare the best-fit period and phase of the full muon data set with the combined DAMA/NaI and DAMA/LIBRA data, which spans the same time period, as a test of the hypothesis that the cosmic ray muon flux is responsible for the annual modulation detected by DAMA. We find in the muon data a large-amplitude fluctuation with a period of around one year, and a phase that is incompatible with that of the DAMA modulation at 5.2 sigmas. Aside from this annual variation, the muon data also contains a further significant modulation with a period between 10 and 11 years and a power well above the 99.9% C.L threshold for noise, whose phase corresponds well with the solar cycle: a s...

  4. Gran Sasso, laboratori fermi per inquinamento

    CERN Multimedia

    Arachi, Alessandra

    2003-01-01

    An experimental hall at the Gran Sasso laboratory has been closed by the Courts after a river was found contaminated. The institute decided to close all the installations in order to protect the health of citizens (1 page)

  5. GRAN SASSO: Enriched germanium in action

    International Nuclear Information System (INIS)

    Anon.

    1991-01-01

    Two large crystals of carefully enriched germanium, one weighing 1 kilogram and the other 2.9 kilograms, and worth many millions of dollars, are being carefully monitored in the Italian Gran Sasso Laboratory in the continuing search for neutrinoless double beta decay

  6. Developments at the Gran Sasso laboratory

    CERN Multimedia

    2003-01-01

    The INFN Laboratory at Gran Sasso is a sanctuary for neutrinos. Located 963 metres over the sea level, it is protected by the 1400 metres of the rock of Gran Sasso mountain, next to the road tunnel of the same name, 120 km from Rome in Italy. It was from this underground location, ideal for receiving a high-energy neutrino beam from CERN, that first sprang the idea for the CNGS (CERN Neutrinos to Gran Sasso) project. However, an accident which occurred in one of the Laboratory's three experimental halls last August resulted in its temporary closure, leaving a question mark over the project's future. Today, following a legal ruling, certain scientific activities are now starting up again. Angelo Scribano, the vice-president of INFN, takes stock of the situation. "After a difficult year, it seems that an air of optimism is back in the INFN laboratories at Gran Sasso. On 17th June 2003, the competent court of the city of Teramo agreed to certain scientific activities starting up again in Hall C as requested b...

  7. DUBNA-GRAN SASSO: Satellite computer link

    International Nuclear Information System (INIS)

    Anon.

    1994-01-01

    In April a 64 kbit/s computer communication link was set up between the Joint Institute for Nuclear Research (JINR), Dubna (Russia) and Gran Sasso (Italy) Laboratories via nearby ground satellite stations using the INTELSAT V satellite. Previously the international community of Dubna's experimentalists and theorists (high energy physics, condensed matter physics, low energy nuclear and neutron physics, accelerator and applied nuclear physics) had no effective computer links with scientific centres worldwide

  8. Laboratorio Gran Sasso : riprendono le attività

    CERN Multimedia

    2003-01-01

    Tests have begun again in the Gran Sasso Laboratory after it's recent closure due to river contamination : some improvements have been made, such as insulation, and testing of water systems and storage areas (1 paragraph)

  9. Low background Ge spectrometry at Gran Sasso underground laboratories

    Energy Technology Data Exchange (ETDEWEB)

    Preusse, W. [Istituto Nazionale di Fisica Nucleare, Lab. Nazionali del Gran Sasso, Assergi (Italy); Bucci, C. [Istituto Nazionale di Fisica Nucleare, Lab. Nazionali del Gran Sasso, Assergi (Italy); Arpesella, C. [Istituto Nazionale di Fisica Nucleare, Lab. Nazionali del Gran Sasso, Assergi (Italy)

    1997-03-01

    Under the shelter of 1400 m limestone rock the Gran Sasso underground laboratories in the Apennines (110 km north-east of Rome at a turn-off inside the Gran Sasso motorway tunnel) were designed for running large experiments in the field of neutrino, particle and astrophysics by international collaborations. These experiments have in common the basic requirement to be capable to detect very rare events like e.g. neutrino interactions and double beta decays. Due to this their permanent demands for selecting radiopure materials have led to the equipping of a Ge detector laboratory - at present with 6 large detectors. (orig./DG)

  10. Gran Sasso National Laboratory: Outreach and communication activities

    Science.gov (United States)

    Antolini, R.; Di Giovanni, A.; Galeota, M.; Sebastiani, S.

    2010-01-01

    Due to its fascinating structures, the Gran Sasso National Laboratory (LNGS) offers huge opportunities for communication and outreach activities conceived for students and general public. A great effort is devoted to the organisation of the "OPEN DAY", in which the scientific staff of Gran Sasso introduces non expert people to the main relevant research topics of the laboratory through interactive demonstrations and particle detectors. In particular, a portable cosmic rays telescope has been realized: the detector is used by LNGS team in pubblic events as well as to promote the scientific activities of the Laboratory. In order to point out the importance of the scientific culture for young people, LNGS is involved in the organisation of several training courses for students and teachers focused on the improvement of the knowledge on modern physics topics. Since May 2008 is operating in Teramo the "Galileium", an interactive museum for physics and astrophysics.

  11. Multiple muon physics with the MACRO detector at Gran Sasso

    International Nuclear Information System (INIS)

    1989-01-01

    The first supermodule of the MACRO detector at the Gran Sasso Laboratory has been operating since the end of February 1989. About 245,000 muon triggers have been collected in the first three months of data taking corresponding to ∼1890 hours of live-time. Presented here are the measured vertical muon flux as well as the lateral spread and multiplicity distribution of muon bundles. 4 refs., 5 figs

  12. Origin and status of the Gran Sasso INFN Laboratory

    Science.gov (United States)

    Votano, Lucia

    2014-11-01

    The Gran Sasso National Laboratory of INFN (LNGS) is the largest underground laboratory for astroparticle physics in the world. Located in Italy between the cities of L'Aquila and Teramo, 120 km far from Rome, is a research infrastructure mainly dedicated to astroparticle and neutrino physics. It offers the most advanced underground facility in terms of dimensions, complexity and completeness of its infrastructures. LNGS is one of the four national laboratories run by the Istituto Nazionale di Fisica Nucleare (INFN). The scientific program at LNGS is mainly focused on astroparticle, particle and nuclear physics. The laboratory presently hosts many experiments as well as R&D activities, including world-leading research in the fields of solar neutrinos, accelerator neutrinos (CNGS neutrino beam from CERN to Gran Sasso), dark matter (DM), neutrinoless double beta decay (2β0ν) and nuclear cross-section of astrophysical interest. Associate sciences like earth physics, biology and fundamental physics complement the activities. The laboratory is operated as an international science facility and hosts experiments whose scientific merit is assessed by an international advisory Scientific Committee. A review of the main experiments carried out at LNGS will be given, together with the most recent and relevant scientific results achieved.

  13. A new proton spill from CERN to Gran Sasso

    CERN Multimedia

    CERN Bulletin

    2011-01-01

    Since 21 October, CERN has been sending a new type of neutrino beam to Gran Sasso. The new configuration is intended to allow the experiments to define the departure time of the neutrinos more accurately and thus check the previous results obtained using the nominal beam configuration.   The CERN Neutrino to Gran Sasso (CNGS) beam no longer operates using the standard beam time structure. Instead, a new type of proton pulse is being produced by CERN’s accelerators and sent to the graphite target to generate neutrinos. “We are now producing extremely short beam pulses,” explains Edda Gschwendtner, the physicist in charge of the CNGS secondary beam. “During a CNGS cycle we now have a LHC type bunched beam with four bunches, each about 2 ns long. Each bunch contains more than 2.5 x 1011 protons; bunches are spaced by 500 ns. In total, this makes about 1012 protons on target for each extraction from the SPS.” The CNGS beam was originally designed to m...

  14. Atmospheric neutrino oscillation results with macro at Gran Sasso laboratory

    International Nuclear Information System (INIS)

    Spinetti, M.

    1999-01-01

    It is here presented updated results of the measurement of the atmospheric neutrino flux with the Macro detector at Gran Sasso, using three data sets spread in a large energy range. In the high energy range, the upgoing throughgoing muon data set is in favor of νμ→ντ oscillation hypothesis with a probability of 36.6% against the 0.36% for the no oscillation hypothesis. In the low energy range, the two data set are also in favor to the oscillation hypothesis showing a large deficit for IU events and a reduced deficit for US+ID events, since only the US events (=50%) are expected to oscillate. Assuming a νμ→ντ oscillation scheme, the results suggest a large range of the parameter values centered around Δm 2= 0.0025 e V 2, sin 22 θ=1

  15. Time-Shift in the OPERA set-up: proof against superluminal neutrinos without the need of knowing the CERN-LNGS distance and Reminiscences on the origin of the Gran Sasso Lab, of the 3rd neutrino and of the "Teramo Anomaly"

    CERN Document Server

    Zichichi, Antonino

    2012-01-01

    The LVD time stability allows to establish a time-shift in the OPERA experiment, thus providing the first proof against Superluminal neutrinos, using the horizontal muons of the "Teramo Anomaly". This proof is particularly interesting since does not need the knowledge of the distance between the place where the neutrinos are produced (CERN) and the place where they are detected (LNGS). Since the Superluminal neutrinos generated in the physics community a vivid interest in good and bad behaviour in physics research, the author thought it was appropriate to recall the origin of the Gran Sasso Lab, of the 3rd neutrino, of the horizontal muons due to the "Teramo Anomaly" and of the oscillation between leptonic flavours, when the CERN-Gran Sasso neutrino beam was included in the project for the most powerful underground Laboratory in the world.

  16. Tidal tilts observations in the Gran Sasso underground laboratory

    International Nuclear Information System (INIS)

    Iafolla, V.; Nozzoli, S.; Milyukov, V.

    2001-01-01

    A new tilt meter, based on the technology for building a space-borne high-sensitivity accelerometer and manufactured at IFSI/CNR, has a been operating during several years in the INFN Gran Sasso underground laboratory. The results of the analysis of a three-year data set, processed with the program package ETERNA, to estimate earth tidal parameters are reported. For the best series of data (1998) tide measurement accuracies are: 0.5-1% for the M 2 (lunar principal) amplitude and 3-4% for the O 1 (lunar declination) amplitude. The tilt meter installed at a depth of 1400 m shows no clear evidence of meteorological effects. Observed tidal parameters are compared with theoretical tidal parameters predicted for a non-hydrostatic inelastic Earth model and demonstrate good agreement for the M 2 component. Due to the high accuracy of the tidal components prediction (better than 1%) tidal measurements were used to estimate the long-term stability of the instrument response

  17. The CUORE and CUORE-0 experiments at Gran Sasso

    Directory of Open Access Journals (Sweden)

    Giachero A.

    2015-01-01

    Full Text Available The Cryogenic Underground Observatory for Rare Events (CUORE is an experiment to search for neutrinoless double beta decay (0νββ in 130Te and other rare processes. CUORE is a cryogenic detector composed of 988 TeO2 bolometers for a total mass of about 741 kg. The detector is being constructed at the Laboratori Nazionali del Gran Sasso, Italy, where it will start taking data in 2015. If the target background of 0.01 counts/(keV·kg·y will be reached, in five years of data taking CUORE will have an half life sensitivity around 1 × 1026 y at 90% C.L. As a first step towards CUORE a smaller experiment CUORE-0, constructed to test and demonstrate the performances expected for CUORE, has been assembled and is running. The detector is a single tower of 52 CUORE-like bolometers that started taking data in spring 2013. The status and perspectives of CUORE will be discussed, and the first CUORE-0 data will be presented.

  18. Trent'anni di Gran Sasso = Thirty years of Gran Sasso volume in onore di Antonino Zichichi = a volume in honour of Antonino Zichichi

    CERN Document Server

    2010-01-01

    This volume - in honour of Antonino Zichichi - is a collection of papers that have appeared in various journals, proceedings and books published by the Italian Physical Society over the last few decades about the Gran Sasso National Laboratory. The articles reproduced in the book come from Il Nuovo Saggiatore, Il Nuovo Cimento and from the Proceedings of the International School of Physics "Enrico Fermi" of Varenna. A few other relevant articles from special volumes have been included for the sake of completeness.

  19. UNO STUDIO SUL TERREMOTO DEL GRAN SASSO D' ITALIA DEL 5 SETTEMBRE 1950

    Directory of Open Access Journals (Sweden)

    L. Marcelli

    1951-06-01

    Full Text Available Nel presente lavoro si espongono i risultati della prima parte diuno studio sul terremoto del Gran Sasso d'Italia avvenuto il 5 settembre10.50. Si riportano le notizie macrosismiche, e viene tracciatala rete delle isosiste. Calcolata la magnitudo, l'energia, l'epicentro incoordinate ortogonali e geografiche, le velocità delle Pg, Pn, Sg, Sncon le relative dromocrone, il tempo origine,

  20. Proposed tests for minimal SU(5) supergravity at Fermilab, Gran Sasso, SuperKamiokande, and LEP

    CERN Document Server

    López, J L; Pois, H; Zichichi, Antonino

    1993-01-01

    A series of predictions are worked out in order to put the minimal $SU(5)$ supergravity model under experimental test. Using the two-loop gauge coupling renormalization group equations, with the inclusion of supersymmetric threshold corrections, we calculate a new value for the proton decay rate in this model and find that SuperKamiokande and Gran Sasso should see the proton decay mode $p\\to\\bar\

  1. Simultaneous observation of extensive air showers and underground muons at the Gran Sasso Laboratory

    International Nuclear Information System (INIS)

    1989-01-01

    In this paper we present new combined data from the MACRO underground detector located at the Gran Sasso Laboratory and the EAS-TOP surface array located on top of the mountain above MACRO at a zenith angle of 27.5 degree and separated by 3100 meters water equivalent (mwe) of rock. Discussed are the method of the event correlation and the characteristics of the reconstructed events. 4 refs., 3 figs

  2. The Milano-Gran Sasso double beta decay experiment: toward a 20-crystal array

    International Nuclear Information System (INIS)

    Alessandrello, A.; Brofferio, C.; Bucci, C.; Cremonesi, O.; Fiorini, E.; Giuliani, A.; Nucciotti, A.; Pavan, M.; Pessina, G.; Previtali, E.; Zanotti, L.

    1996-01-01

    TeO 2 thermal detectors are being used by the Milano group to search for neutrinoless double beta decay of 130 Te. An upper limit for neutrinoless decay half life of 2.1 x 10 22 yr at 90% CL obtained with a 334 g TeO 2 detector has been previously reported. To improve the sensitivity of the experiment an array of twenty 340 g TeO 2 crystals will be realised in the next future. As a first step toward the realisation of that experiment a 4 crystal detector has been tested in the Gran Sasso refrigerator. Detector performances, data acquisition and analysis are discussed. (orig.)

  3. Operation and performance of the ICARUS-T600 cryogenic plant at Gran Sasso underground Laboratory

    CERN Document Server

    Antonello, M.; Baibussinov, B.; Boffelli, F.; Bubak, A.; Calligarich, E.; Canci, N.; Centro, S.; Cesana, A.; Cieślik, K.; Cline, D.B.; Cocco, A.G.; Dabrowska, A.; Dermenev, A.; Disdier, J.M.; Falcone, A.; Farnese, C.; Fava, A.; Ferrari, A.; Gibin, D.; Gninenko, S.; Guglielmi, A.; Haranczyk, M.; Holeczek, J.; Ivashkin, A.; Kirsanov, M.; Kisiel, J.; Kochanek, I.; Lagoda, J.; Mania, S.; Menegolli, A.; Meng, G.; Montanari, C.; Otwinowski, S.; Picchi, P.; Pietropaolo, F.; Plonski, P.; Rappoldi, A.; Raselli, G.L.; Rossella, M.; Rubbia, C.; Sala, P.R.; Scaramelli, A.; Segreto, E.; Sergiampietri, F.; Stefan, D.; Sulej, R.; Szarska, M.; Terrani, M.; Torti, M.; Varanini, F.; Ventura, S.; Vignoli, C.; Wang, H.G.; Yang, X.; Zalewska, A.; Zani, A.; Zaremba, K.

    2015-12-04

    ICARUS T600 liquid argon time projection chamber is the first large mass electronic detector of a new generation able to combine the imaging capabilities of the old bubble chambers with the excellent calorimetric energy measurement. After the three months demonstration run on surface in Pavia during 2001, the T600 cryogenic plant was significantly revised, in terms of reliability and safety, in view of its long-term operation in an underground environment. The T600 detector was activated in Hall B of the INFN Gran Sasso Laboratory during Spring 2010, where it was operated without interruption for about three years, taking data exposed to the CERN to Gran Sasso long baseline neutrino beam and cosmic rays. In this paper the T600 cryogenic plant is described in detail together with the commissioning procedures that lead to the successful operation of the detector shortly after the end of the filling with liquid Argon. Overall plant performance and stability during the long-term underground operation are discusse...

  4. Seasonal variations of the rate of multiple-muons in the Gran Sasso underground laboratory

    Directory of Open Access Journals (Sweden)

    Ronga F.

    2017-01-01

    Full Text Available It is well known that the rate of cosmic ray muons depends on the atmospheric temperature, and that for events with a single muon the peak of the rate is in summer, in underground laboratories in the northern hemisphere. In 2015 the MINOS experiment, in USA, found that, for small distances between the multiple-muons, the rate of multiple-muons peaks in the winter and that the amplitude of the modulation is smaller than in the case of a single muon. I have done a re-analysis of data of the past MACRO experiment. The result is that under Gran Sasso the rate of multiple-muons at small distances peaks in the summer. This difference with MINOS could be explained by differences in the atmospheric temperature due to latitude. This results could be of interest for dark matter experiments looking to dark matter seasonal modulation due to the Earth’s motion.

  5. The ICARUS T600 Liquid Argon Detector Operation in the Underground Gran Sasso Laboratory

    CERN Document Server

    Vignoli, C

    2014-01-01

    The ICARUS T600 Module is the largest liquid argon detector (760 t LAr mass) ever realized to study neutrino oscill ations and matter stability in the deep underground Gran Sasso Laboratory. One of t he key elements for the detector performance is the liquid argon purity: residual electronegative compounds in argon have to be kept as low as 0.1 part s per billion all over the detector run. The T600 Module design was finalized by the ICARUS Collaboration after years of R&D studies that brought to the viable and scalable industrial solutions necessary for sized experiments with severe safety prescriptions for the underground operation . We present the T600 Module successful commissioning and the 3-years efficient, stable and continuous operation with extraordinary LAr purity, high performance and zero dead time data taking . This result demonstrates for the first time the feasibility of activation and long-term run in safe conditions of sized cryogenic detectors even in a confined underground location and r...

  6. The slow control system of the GERDA double beta decay experiment at Gran Sasso

    International Nuclear Information System (INIS)

    Brugnera, R; Garfagnini, A; Gigante, G; Hemmer, S; Zinato, D; Costa, F; Lippi, I; Michelotto, M; Ur, C

    2012-01-01

    GERDA is an experiment designed and built to study double beta decays of 76 Ge. It is currently in operation at the Gran Sasso underground laboratories (LNGS). A custom slow control system has been designed to monitor and control all the critical parameters for the proper functioning of the experiment. The main sub-components of the experiment (Cryostat, Clean Room, Water Tank, electronic crates and temperatures, High Voltage Systems, Radon Monitor and Source Insertion System) are constantly monitored by several distributed clients which write acquired data to a relational database (PostgreSQL). The latter allows to maintain a history of the whole experiment and, performing correlation between different and independent components, is useful to debug possible system malfunctions. The system is complemented by a Web server, a lightweight and efficient interface to the user on shifts and to the on-call experts, and by a dedicated Alarm dispatcher which distributes the errors generated by the components to the users allowing to react in short time. The whole project has been built around open source and custom software.

  7. Test of a SiPM-scintillator-based muon detector at the Gran Sasso National Laboratory

    Science.gov (United States)

    Stark, I.; Könye, V.; Antolini, R.; Arneodo, F.; Boeltzig, A.; Candela, A.; Di Giovanni, A.; Fülöp, Zs; Junker, M.

    2018-01-01

    The aim of the present work was to determine the characteristics of a tracking scintillation detector by measuring cosmic muons above- and underground at the Gran Sasso National Laboratory (LNGS). The detector has been designed for demonstrational purposes and had never been involved in scientific research before. It is a compact, layered detector using plastic scintillator bars and silicon photomultipliers (SiPM). In the present setup no energy information is used. In the underground laboratory we had to deal with a very low rate of muons (6 orders of magnitude less than on the surface). For this reason we optimized the trigger configuration. During the evaluation process we designed and optimized a maximum likelihood line fitting method which is able to deal with the high dark count rate and the non optimized detection efficiency of the detector. We also carried out simulations to calculate the actual flux and intensity from the measured ones. Finally, we compared our results with the literature and they were found to be in agreement.

  8. Hydraulic pressure variations of groundwater in the Gran Sasso underground laboratory during Amatrice earthquake of August 24th, 2016

    Directory of Open Access Journals (Sweden)

    Gaetano De Luca

    2016-12-01

    Full Text Available Since May 2015, hydraulic pressure, temperature and electrical conductivity of groundwater are in continuos recording near the deep underground laboratories of Gran Sasso of INFN. We used the S13 borehole that have pressure varying in the range of 24-28 bar during the year; these values mean that we have at least 300 m of water table above. The sampling of these parameters was brought until to 50 Hz using a 3 channels 24-bit ADC. During the period May 2015 – September 2016 (17 months we detected hydraulic pressure signals from 12 earthquakes at different surface distances (from 12.000 to 30 km and different magnitudes (from 8.3 to 4.3 Mw. For the Amatrice mainshock, we present, as first results, the hydroseismograph recorded at the S13 hydraulic pressure device compared to the time history recorded at GIGS station located both in the deep core of the Gran Sasso chain.

  9. GRAN SASSO/GRENOBLE: Artificial neutrino source confirms solar neutrino result

    International Nuclear Information System (INIS)

    Anon.

    1995-01-01

    In 1992, the Gallex experiment announced the first observation of the neutrinos produced in the primary proton-proton fusion reaction in the core of the Sun, reaction at the origin of the energy production by our star (September 1992, page 1). The Gallex team stressed that the observed neutrino flux was only about two-thirds of the predicted level, confirming the deficit observed by the two pioneering experiments, Ray Davis' chlorine-based detector in the USA and the Kamiokande study in Japan (which are only sensitive to neutrinos from subsidiary solar fusion processes). This deficit demands explanation, and could considerably modify our understanding of how stars shine and/or of neutrino physics. But before drawing conclusions, the Gallex result had to be checked. Gallex, installed in the Italian Gran Sasso underground Laboratory, is a radiochemical experiment using neutrino interactions to transform gallium-71 into germanium-71. The latter is radioactive and decays with a half-life of 11.4 days. Counting the germanium-71 atoms extracted from the target tank measures the neutrino flux to which the detector is exposed. Neutrinos are famous for their reluctance to interact. 65 billion per square centimetre per second on the surface of the Earth produce only one germanium-71 atom in the Gallex target containing 30 tons of gallium. This is at the limit of homeopathy (extracting few atoms of germanium-71 from a solution containing 10 30 atoms) and needs careful checking. Since it is not possible to switch off the Sun, the only recourse was to build an artificial neutrino source more powerful than the Sun as a benchmark. This was done last summer. Last May, 36 kilograms of chromium grains were placed in the Siloe reactor of the French Commissariat à l'énergie atomique, Grenoble. The chromium had been previously enriched to 40% chromium-50 by the Kurchatov Institute in Moscow (natural chromium contains only 4.5% chromium-50). A dedicated core was built for

  10. Paleoseismology of silent faults in the Central Apennines (Italy: the Campo Imperatore Fault (Gran Sasso Range Fault System

    Directory of Open Access Journals (Sweden)

    M. Moro

    2003-06-01

    Full Text Available Paleoseismological analyses were performed along the Campo Imperatore Fault (part of the Gran Sasso Range Fault System in order to define the seismogenic behaviour (recurrence interval for surface faulting events, elapsed time since the last activation, maximum expected magnitude. Four trenches were excavated across secondary faults which are related to the main fault zone. The youngest event (E1 occurred after 3480-3400 years BP; a previous event (E2 occurred between 7155-7120/7035-6790 years BP and 5590-5565/5545-5475 years BP, while the oldest one (E3 has a Late Pleistocene age. The chronological interval between the last two displacement events ranges between 1995 and 6405 years. The minimum elapsed time since the last activation is 800 years, due to the absence of historical earthquakes which may have been caused by the Campo Imperatore Fault and based on the completeness of the historical catalogues for the large magnitude events in the last eight centuries. Based on the length of the fault surficial expression, earthquakes with M 6.95 may be expected from the activation of the entire Gran Sasso Range Fault System. The effects of the fault activation were investigated through the simulation of a damage scenario obtained by means of the FaCES computer code, made by the National Seismic Survey for civil protection purposes. The damage scenario shows that the activation of the Gran Sasso Range Fault System may be responsible for an earthquake with epicentral intensity I0 10.5 MCS, with a number of collapsed buildings ranging between 7900 and 31100 and a number of damaged buildings ranging between 99 000 and 234 000. The investigated case defines, therefore, a high risk level for the region affected by the Campo Imperatore Fault.

  11. A large area transition radiation detector to measure the energy of muons in the Gran Sasso underground laboratory

    International Nuclear Information System (INIS)

    Barbarito, E.; Bellotti, R.; Cafagna, F.; Castellano, M.; De Cataldo, G.; De Marzo, C.; Favuzzi, C.; Fusco, P.; Giglietto, N.; Guarnaccia, P.; Mazziotta, M.N.; Mongelli, M.; Montaruli, T.; Perchiazzi, M.; Raino, A.; Sacchetti, A.; Spinelli, P.

    1995-01-01

    We have designed and built a transition radiation detector of 36 m 2 area in order to measure the residual energy of muons penetrating in the Gran Sasso cosmic ray underground laboratory up to the TeV region. It consists of three adjacent modules, each of 2x6 m 2 area. Polystyrene square tubes, filled with a argon-carbon dioxide gas mixture, and polyethylene foam layers are used as proportional detectors and radiators respectively. We cover such a large surface with only 960 channels that provide adequate energy resolution and particle tracking for the astroparticle physics items to investigate. The detector has been calibrated using a reduced size prototype in a test beam. Results from one module exposed to cosmic rays at sea level are shown. (orig.)

  12. First results from the DarkSide-50 dark matter experiment at Laboratori Nazionali del Gran Sasso

    Directory of Open Access Journals (Sweden)

    P. Agnes

    2015-04-01

    Full Text Available We report the first results of DarkSide-50, a direct search for dark matter operating in the underground Laboratori Nazionali del Gran Sasso (LNGS and searching for the rare nuclear recoils possibly induced by weakly interacting massive particles (WIMPs. The dark matter detector is a Liquid Argon Time Projection Chamber with a (46.4±0.7 kg active mass, operated inside a 30 t organic liquid scintillator neutron veto, which is in turn installed at the center of a 1 kt water Cherenkov veto for the residual flux of cosmic rays. We report here the null results of a dark matter search for a (1422±67 kgd exposure with an atmospheric argon fill. This is the most sensitive dark matter search performed with an argon target, corresponding to a 90% CL upper limit on the WIMP-nucleon spin-independent cross section of 6.1×10−44 cm2 for a WIMP mass of 100 Gev/c2.

  13. Search for time modulations in the decay constant of 40K and 226Ra at the underground Gran Sasso Laboratory

    Science.gov (United States)

    Bellotti, E.; Broggini, C.; Di Carlo, G.; Laubenstein, M.; Menegazzo, R.

    2018-05-01

    Time modulations at per mil level have been reported to take place in the decay constant of several nuclei with period of one year (most cases) but also of about one month or one day. On the other hand, experiments with similar or better sensitivity have been unable to detect any modulation. In this letter we give the results of the activity study of two different sources: 40K and 226Ra. The two gamma spectrometry experiments have been performed underground at the Gran Sasso Laboratory, this way suppressing the time dependent cosmic ray background. Briefly, our measurements reached the sensitivity of 3.4 and 3.5 parts over 106 for 40K and 226Ra, respectively (1 sigma) and they do not show any statistically significant evidence of time dependence in the decay constant. We also give the results of the activity measurement at the time of the two strong X-class solar flares which took place in September 2017. Our data do not show any unexpected time dependence in the decay rate of 40K in correspondence with the two flares. To the best of our knowledge, these are the most precise and accurate results on the stability of the decay constant as function of time.

  14. C2GT intercepting CERN neutrinos to Gran Sasso in the Gulf of Taranto to measure $\\theta_13$

    CERN Document Server

    Ball, A E; Camilleri, L L; Catinaccio, A; Chelkov, G A; Dydak, F; Elagin, A; Frandsen, Poul Kjaer; Gostkin, M I; Grant, A; Guskov, A; Joram, C; Krumshtein, Z; Müller, H; Postema, H; Price, M; Rovelli, T; Schinzel, D; Séguinot, Jacques; Valenti, G; Voss, R; Wotschack, J; Zhemchugov, A S

    2007-01-01

    Today's greatest challenge in accelerator-based neutrino physics is to measure the mixing angle \\thonethree\\ which is known to be much smaller than the solar mixing angle \\thonetwo\\ and the atmospheric mixing angle \\thtwothree . A non-zero value of the angle \\thonethree\\ is a prerequisite for observing CP violation in neutrino mixing. In this paper, we discuss a deep-sea neutrino experiment with 1.5~Mt fiducial target mass in the Gulf of Taranto with the prime objective of measuring \\thonethree. The detector is exposed to the CERN neutrino beam to Gran Sasso in off-axis geometry. Monochromatic muon-neutrinos of $\\approx 800$~MeV energy are the dominant beam component. Neutrinos are detected through quasi-elastic, charged-current reactions in sea water; electrons and muons are detected in a large-surface, ring-imaging Cherenkov detector. The profile of the seabed in the Gulf of Taranto allows for a moveable experiment at variable distances from CERN, starting at 1100 km. From the oscillatory pattern of the dis...

  15. Neutrinos sent from CERN in Geneva "photographed" at the Gran Sasso laboratory after a travel of 730 km under the Earth Crust

    CERN Multimedia

    2007-01-01

    "There was a lot of excitement and joy among the neutrino physicists of the OPERA experiment, when the first neutrino event occurred on Tuesday October 2, at 5:04 p.m.. One of the many millions of neutrinos produced at the CERN accelerator complex (CNGS) during its operation hit the OPERA deteftor at the underground Gran Sasso Laboratory of the Italian Institute for Nuclear Research (INFN), 730 km away from CERN...." (1,5 page)

  16. Il futuro di tutto l'Universo alle pendici del Gran Sasso Un esperimento del Cern in Ginevra e dell'Istituto di Fisica nuclear a base di "neutrini"

    CERN Multimedia

    2006-01-01

    On 11 september in the morning, a neutrino beam is gone form Cern in Geneva to Gran Sasso Laboratories. It have taken 2,5 milliseconds, travelling underground, for the 732 km between the two cities. (1,5 page)

  17. Gran Sasso: Gallex underway

    International Nuclear Information System (INIS)

    Anon.

    1991-01-01

    Although the experiment actually started collecting its solar neutrino data last Summer, November 30 saw the official inauguration of the Gallex experiment. A collaboration between Heidelberg, Karlsruhe and Munich in Germany, Saclay and Nice in France, Milan and Rome in Italy, Rehovot in Israel and Brookhaven in the US, Gallex uses 30 tonnes of gallium (as gallium chloride solution) to intercept neutrinos from the sun

  18. Risk analysis and reliability of the GERDA Experiment extraction and ventilation plant at Gran Sasso mountain underground laboratory of Italian National Institute for Nuclear Physics

    Energy Technology Data Exchange (ETDEWEB)

    Lombardi, Mara; Garzia, Fabio; Guarascio, Massimo; Giovannone, Enzo Paolo; Giampaoli, Antonio; Musti, Mafalda; Ranalli, Maria Teresa; Perruzza, Roberto; Tartaglia, Roberto, E-mail: mara.lombardi@uniroma1.it, E-mail: fabio.garzia@uniroma1.it, E-mail: massimo.guarascio@uniroma1.it [Universita degli Studi di Roma La Sapienza-Engineering Roma (Italy); Corpo Nazionale Vigili del Fuoco L' Aquila (CNVF) (Italy); Istituto Nazionale di Fisica Nucleare - Laboratori del Gran Sasso L' Aquila, Abruzzo (Italy)

    2017-07-15

    The aim of this study is the risk analysis evaluation about argon release from the GERDA experiment in the Gran Sasso underground National Laboratories (LNGS) of the Italian National Institute for Nuclear Physics (INFN). The GERDA apparatus, located in Hall A of the LNGS, is a facility with germanium detectors located in a wide tank filled with about 70 m{sup 3} of cold liquefied argon. This cryo-tank sits in another water-filled tank (700 m{sup 3} ) at atmospheric pressure. In such cryogenic processes, the main cause of an accidental scenario is lacking insulation of the cryo-tank. A preliminary HazOp analysis has been carried out on the whole system. The risk assessment identified two possible top-events: explosion due to a Rapid Phase Transition - RPT and argon runaway evaporation. Risk analysis highlighted a higher probability of occurrence of the latter top event. To avoid emission in Hall A, the HazOp, Fault Tree and Event tree analyses of the cryogenic gas extraction and ventilation plant have been made. The failures related to the ventilation system are the main cause responsible for the occurrence. To improve the system reliability some corrective actions were proposed: the use of UPS and the upgrade of damper opening devices. Furthermore, the Human Reliability Analysis identified some operating and management improvements: action procedure optimization, alert warnings and staff training. The proposed model integrates the existing analysis techniques by applying the results to an atypical work environment and there are useful suggestions for improving the system reliability. (author)

  19. GRAN SASSO: Roman lead or physics experiments

    International Nuclear Information System (INIS)

    Pascolini, Alessandro

    1991-01-01

    On June 15 at Oristano (Sardinia) a formal ceremony marked the start of an underwater archaeological campaign sponsored by the Istituto Nazionale di Fisica Nucleare (INFN) to recover the load of a Roman freighter (navis oneraria) which sank off Sardinia carrying an exceptionally large load of lead

  20. Double success for neutrino lab

    CERN Multimedia

    2010-01-01

    "The Gran Sasso National Laboratory in Italy is celebrating two key developments in the field of neutrino physics. Number one is the first ever detection, by the OPERA experiement, of possible tau neutrino that has switched its identity from a muon neutrino as it travelled form its origins at CERN in Switzerland to the Italian lab. Number two is the successful start-up of the ICARUS detector, which, like OPERA, is designed to study neutrinos that "oscillate" between types" (0.5 pages)

  1. CERN to Gran Sasso An ideal distance for superbeam?

    CERN Document Server

    Minakata, H; Minakata, Hisakazu; Nunokawa, Hiroshi

    2002-01-01

    We use the CP trajectory diagram as a tool for pictorial representation of the genuine CP and the matter effects to explore the possibility of an in situ simultaneous measurement of \\delta and the sign of \\Delta m^2_{13}. We end up with a low-energy conventional superbeam experiment with a megaton-class water Cherenkov detector and baseline length of about 700 km. A picturesque description of the combined ambiguity which may arise in simultaneous determination of \\theta_{13} and the above two quantities is given in terms of CP trajectory diagram.

  2. INFN halts the activities of Gran Sasso Laboratories

    CERN Document Server

    2003-01-01

    Due to the rising doubts about the tightness of the sewers, the executive board of INFN has decided as a precaution to halt all activities requiring manipulation of any kind of liquid over the whole Laboratories (1 paragraph).

  3. The OPERA cosmic ray test facility at the Gran Sasso

    International Nuclear Information System (INIS)

    Brugnera, R.; Candela, A.; Carrara, E.; Dal Corso, F.; De Deo, M.; Degli Esposti, L.; D'Incecco, M.; Dusini, S.; Fanin, C.; Garfagnini, A.; Grianti, F.; Gustavino, C.; Lindozzi, M.; Mengucci, A.; Monacelli, P.; Moro, R.; Paoloni, A.; Stanco, L.; Tatananni, E.; Terranova, F.; Spinetti, M.; Stipcevic, M.; Ventura, M.; Votano, L.; Zauner, B.

    2004-01-01

    The OPERA experiment foresees the use of about 3000m2 of RPCs, that will be tested before the installation in a dedicated cosmic ray test facility. The test facility is composed of 2 triggering walls selecting horizontal cosmic rays muons. Each wall houses 64 glass RPCs equipped with 128 horizontal Flat Cable Strips. The z-coordinate is measured with a standard digital chain, while the x-coordinate is obtained by measuring the propagation time of the signals along the strips. In this paper the performance of the trigger walls and the first results of the RPC debug are presented

  4. The neutrino's road to Gran Sasso gets ready!

    CERN Multimedia

    2002-01-01

    The decay tunnel for CNGS has just been finished. This is a big step for the project. Since last July, some 2,700 metres have been excavated. These include access galleries, the TT41 transfer line for protons, the target chamber and the decay tunnel.

  5. Gran Torino

    Directory of Open Access Journals (Sweden)

    Manuel Gárate

    2009-02-01

    Full Text Available Las obra del ex-rudo del cine de los 70’ y 80’ no nos deja de sorprender por su sensibilidad y mirada crítica sobre la sociedad norteamericana actual. Clint Eastwood parece seguir actuando de sí mismo; siempre un duro, pero ya anciano, con achaques, dolores y tantas heridas en el cuerpo y en el alma que sólo cabe esperar su redención ante el indefectible paso del tiempo y los golpes de la vida. “Gran Torino” sigue la ruta trazada de “Million Dollar Baby” (2004 o incluso de aquel inolvidable...

  6. World's leading physics lab shut for poisoning water

    CERN Multimedia

    Popham, Peter

    2003-01-01

    Gran Sasso National Laboratory, the most advanced laboratory in the world for underground research into astroparticle physics, has been shut after polluting the environment. The laboratory, deep beneath the Apenninnes is said to have poisoned an aqueduct with waste from its equipment and committed numerous other infringements and ommissions (1 page)

  7. High-sensitivity strain measurements from underground interferometric stations: geodynamic phenomena at Gran Sasso and first records from Canfranc

    OpenAIRE

    Botta, Verdiana

    2013-01-01

    2011 - 2012 Earth's surface and interior continuously deform as a result of geological and geophys- ical processes. To study these phenomena and to understand better the rheological properties of the Earth, measurements of Earth's deformation become of fundamental importance, providing a critical link between Earth's structure and dynamics, also in order to optimize the response to natural hazards and identify potential risk areas. The study of crustal deformation is a compl...

  8. The water purification system for the low background counting test facility of the Borexino experiment at Gran Sasso

    International Nuclear Information System (INIS)

    Balata, M.; Cadonati, L.; Laubenstein, M.; Heusser, G.; Giammarchi, M.G.; Scardaoni, R.; Torri, V.; Cecchet, G.; De Bari, A.; Perotti, A.

    1996-01-01

    The Borexino experiment, for the study of solar neutrino physics, requires radiopurity at the level of 5 x 10 -16 g/g 238 U equivalent (or 6 x 10 -9 Bq/kg) on a detector mass of many tons of scintillator. Feasibility studies are performed in a counting test facility now operating at LNGS, which consists of 4 t of liquid scintillator viewed by 100 photomultipliers and shielded by 100 t of water. The accomplishment of this goal requires the shielding liquid, water, to be at the 10 -13 g/g contamination level (1.2 x 10 -6 Bq/kg) or better. This paper describes the water purification system; it consists of a combination of several purification processes to remove particulate, radioactive ions, dissolved gases and other impurities. Residual contaminations are measured by analytical or direct-counting techniques. For radon measurement, particularly challenging at this low activity levels, a low background counting method has been developed. (orig.)

  9. Crean 'antimateria' en gran cantidad

    CERN Multimedia

    Macedo, C

    2002-01-01

    "Como si se tratara de una historia de ciencia ficcion, un grupo de cientificos del Laboratorio Europeo de Fisica de Particulas (CERN), en Ginebra, anuncio que produjo por primera vez una gran cantidad de antimateria de hidrogeno, lo que representa un gran paso para entender la formacion del Universo" (1 page).

  10. Vision Lab

    Data.gov (United States)

    Federal Laboratory Consortium — The Vision Lab personnel perform research, development, testing and evaluation of eye protection and vision performance. The lab maintains and continues to develop...

  11. Results of ultra-low level 71ge counting for application in the Gallex-solar neutrino experiment at the Gran Sasso Underground Physics Laboratory

    Science.gov (United States)

    Hampel, W.; Heusser, G.; Huebner, M.; Kiko, J.; Kirsten, T.; Schneider, K.; Schlotz, R.

    1985-01-01

    It has been experimentally verified that the Ultra-Low-Level Counting System for the Gallex solar neutrino experiment is capable of measuring the expected solar up silon-flux to plus or minus 12% during two years of operation.

  12. Advanced LabVIEW Labs

    International Nuclear Information System (INIS)

    Jones, Eric D.

    1999-01-01

    In the world of computer-based data acquisition and control, the graphical interface program LabVIEW from National Instruments is so ubiquitous that in many ways it has almost become the laboratory standard. To date, there have been approximately fifteen books concerning LabVIEW, but Professor Essick's treatise takes on a completely different tack than all of the previous discussions. In the more standard treatments of the ways and wherefores of LabVIEW such as LabVIEW Graphical Programming: Practical Applications in Instrumentation and Control by Gary W. Johnson (McGraw Hill, NY 1997), the emphasis has been instructing the reader how to program LabVIEW to create a Virtual Instrument (VI) on the computer for interfacing to a particular instruments. LabVIEW is written in ''G'' a graphical programming language developed by National Instruments. In the past the emphasis has been on training the experimenter to learn ''G''. Without going into details here, ''G'' incorporates the usual loops, arithmetic expressions, etc., found in many programming languages, but in an icon (graphical) environment. The net result being that LabVIEW contains all of the standard methods needed for interfacing to instruments, data acquisition, data analysis, graphics, and also methodology to incorporate programs written in other languages into LabVIEW. Historically, according to Professor Essick, he developed a series of experiments for an upper division laboratory course for computer-based instrumentation. His observation was that while many students had the necessary background in computer programming languages, there were students who had virtually no concept about writing a computer program let alone a computer- based interfacing program. Thus the beginnings of a concept for not only teaching computer- based instrumentation techniques, but aiso a method for the beginner to experience writing a com- puter program. Professor Essick saw LabVIEW as the ''perfect environment in which to

  13. Predicting heat stress index in Sasso hens using automatic linear modeling and artificial neural network.

    Science.gov (United States)

    Yakubu, A; Oluremi, O I A; Ekpo, E I

    2018-03-17

    There is an increasing use of robust analytical algorithms in the prediction of heat stress. The present investigation therefore, was carried out to forecast heat stress index (HSI) in Sasso laying hens. One hundred and sixty seven records on the thermo-physiological parameters of the birds were utilized. They were reared on deep litter and battery cage systems. Data were collected when the birds were 42- and 52-week of age. The independent variables fitted were housing system, age of birds, rectal temperature (RT), pulse rate (PR), and respiratory rate (RR). The response variable was HSI. Data were analyzed using automatic linear modeling (ALM) and artificial neural network (ANN) procedures. The ALM model building method involved Forward Stepwise using the F Statistic criterion. As regards ANN, multilayer perceptron (MLP) with back-propagation network was used. The ANN network was trained with 90% of the data set while 10% were dedicated to testing for model validation. RR and PR were the two parameters of utmost importance in the prediction of HSI. However, the fractional importance of RR was higher than that of PR in both ALM (0.947 versus 0.053) and ANN (0.677 versus 0.274) models. The two models also predicted HSI effectively with high degree of accuracy [r = 0.980, R 2  = 0.961, adjusted R 2  = 0.961, and RMSE = 0.05168 (ALM); r = 0.983, R 2  = 0.966; adjusted R 2  = 0.966, and RMSE = 0.04806 (ANN)]. The present information may be exploited in the development of a heat stress chart based largely on RR. This may aid detection of thermal discomfort in a poultry house under tropical and subtropical conditions.

  14. Predicting heat stress index in Sasso hens using automatic linear modeling and artificial neural network

    Science.gov (United States)

    Yakubu, A.; Oluremi, O. I. A.; Ekpo, E. I.

    2018-03-01

    There is an increasing use of robust analytical algorithms in the prediction of heat stress. The present investigation therefore, was carried out to forecast heat stress index (HSI) in Sasso laying hens. One hundred and sixty seven records on the thermo-physiological parameters of the birds were utilized. They were reared on deep litter and battery cage systems. Data were collected when the birds were 42- and 52-week of age. The independent variables fitted were housing system, age of birds, rectal temperature (RT), pulse rate (PR), and respiratory rate (RR). The response variable was HSI. Data were analyzed using automatic linear modeling (ALM) and artificial neural network (ANN) procedures. The ALM model building method involved Forward Stepwise using the F Statistic criterion. As regards ANN, multilayer perceptron (MLP) with back-propagation network was used. The ANN network was trained with 90% of the data set while 10% were dedicated to testing for model validation. RR and PR were the two parameters of utmost importance in the prediction of HSI. However, the fractional importance of RR was higher than that of PR in both ALM (0.947 versus 0.053) and ANN (0.677 versus 0.274) models. The two models also predicted HSI effectively with high degree of accuracy [r = 0.980, R 2 = 0.961, adjusted R 2 = 0.961, and RMSE = 0.05168 (ALM); r = 0.983, R 2 = 0.966; adjusted R 2 = 0.966, and RMSE = 0.04806 (ANN)]. The present information may be exploited in the development of a heat stress chart based largely on RR. This may aid detection of thermal discomfort in a poultry house under tropical and subtropical conditions.

  15. The Sasso Pizzuto landslide dam and seismically induced rockfalls along the Nera River gorge (Central Italy).

    Science.gov (United States)

    Romeo, Saverio; Di Matteo, Lucio; Melelli, Laura; Cencetti, Corrado; Dragoni, Walter; Fredduzzi, Andrea; De Rosa, Pierluigi

    2017-04-01

    The seismically induced landslides are among the most destructive and dangerous effects of an earthquake. In the Italian contest, this is also documented by a national catalogue that collects data related to earthquake-induced ground failures in the last millennium (CEDIT database). In particular, Central Italy has been affected by several historical landslides triggered by significant earthquakes, the last of which occurred in August-October 2016, representing the Italian strongest event after the 1980 Irpinia earthquake (Mw 6.9). The study presents the effects of recent seismically induced rockfalls occurred within the Central Italy seismic sequence (October 30, 2016) along the Nera River gorge between Umbria and Marche. The study area is completely included in the Monti Sibillini National Park, where the highest mountain chain in the Umbrian-Marchean Apennine is located. Most of rockfalls have affected the "Maiolica" formation, a stratified and fractured pelagic limestone dating to the Early Cretaceous. The seismic sequence produced diffuse instabilities along the SP 209 road within the Nera River gorge: boulders, debris accumulations and diffuse rockfalls have been mapped. Most of boulders have size ranging from 0.3 to 2.0 m in diameter. Although several strong quakes (Mw > 5) occurred during the August-October sequence, only the main quake triggered the Sasso Pizzuto rockfall producing a landslide dam along the Nera River. The landslide appears to have originated as a wedge failure, which evolved to free fall when the rock block lost the contact with the stable rock mass. In other words, the quake produced the "explosion" of the rock wall allowing the rockfall process. Once the rock mass reached the toe of the slope, it was broken triggering a rock avalanche that obstructed both the Nera River and SP 209 road. With the aim to estimate the total volume of involved rock, a field survey was carried out by using a laser rangefinder. Remote measures were acquired

  16. Virtual Reality Lab Assistant

    Science.gov (United States)

    Saha, Hrishikesh; Palmer, Timothy A.

    1996-01-01

    Virtual Reality Lab Assistant (VRLA) demonstration model is aligned for engineering and material science experiments to be performed by undergraduate and graduate students in the course as a pre-lab simulation experience. This will help students to get a preview of how to use the lab equipment and run experiments without using the lab hardware/software equipment. The quality of the time available for laboratory experiments can be significantly improved through the use of virtual reality technology.

  17. Global model of the Gran Telescopio Canarias

    Science.gov (United States)

    Castro Lopez-Tarruella, F. Javier; Fernandez Ibarz, Jose M.

    2002-07-01

    During the conceptual design of the GTC (Gran Telescopio Canarias) it was suggested to develop a Global Model of the behaviour of the GTC system to be used as a tool for the system engineering. This Global Model should be a dynamical simulation capable to predict the pointing, tracking, guiding and image quality of the GTC system in several simulation scenarios depending on the behavior of each subsystem. It was decided to develop the simulation in the Matlab/Simulink« environment. The kernel of the Global Model was a Simulink® model of the telescope mechanics. The model included the structural dynamics, control loops of the main axis (azimuth, elevation and rotators), and load models (wind, gravity, seism). Each component included error sources inherent to it (cogging and ripple on motors, encoding errors, bearing run-out, etc). The model permitted large rotations in elevation axis, which was necessary to test pointing performances. A specific simulation was developed within the project office for the analysis of the image quality of the optical system. It includes polishing defects of the optical surfaces (M1 segments, M2 and M3), low spatial frequency distortions of the optical surfaces (due to fabrication, gravity of instability) and misalignment between the primary mirror segments.

  18. Internet de las cosas y la ingeniería de sistemas: un gran poder conlleva una gran responsabilidad

    OpenAIRE

    Luján Mora, Sergio

    2017-01-01

    Presentación de la conferencia "Internet de las cosas y la ingeniería de sistemas: un gran poder conlleva una gran responsabilidad" impartida en las IV Jornadas Informáticas UTE, celebradas el 15 y 16 de junio de 2017 y organizadas por la Universidad Tecnológica Equinoccial (Quito, Ecuador).

  19. La Supervivencia del Gran Periodismo Financiero

    Directory of Open Access Journals (Sweden)

    Calvo Gutiérrez, Elvira

    2011-06-01

    Full Text Available En español: Tradicionalmente, el periodismo económico internacional ha tenido en los grupos anglosajones Dow Jones (EE.UU. y Pearson (Gran Bretaña, editores de The Wall Street y Financial Times respectivamente, sus grandes referentes mundiales. Sin embargo, el nuevo siglo ha traído enormes convulsiones al sector de las que no se han librado ni los periódicos de élite ni las grandes agencias especializadas en información económica como Reuters, Thomson o Bloomberg. A la batalla en Internet, se suman la expansión del poder informativo económico y los cambios de mentalidad tanto de las empresas como de las audiencias. Todo ello ha derivado en una guerra encarnizada, protagonizada por los grandes líderes que, con más de un siglo de tradición algunos, han sido objeto de ventas o fusiones, operaciones financieras imprescindibles para poder adaptarse a los nuevos tiempos. El objetivo de este artículo es analizar la trayectoria del gran periodismo económico, con especial dedicación a dos frentes: uno, conocer cómo se están posicionando estos periódicos de élite en la red; otro, la disyuntiva entre continuar siendo un periodismo de calidad, riguroso, cosmopolita y caro de mantener, o cambiar hacia un periodismo ideológico, truculento o amarillista que, como en otras especialidades, también se ha extendido entre el periodismo financiero. In english: Traditionally, the economic international journalism has had in the Anglo-Saxon groups Dow Jones (USA and Pearson (Great Britain, publishers of The Wall Street and Financial Times respectively, his big world models. Nevertheless, the new century has brought enormous convulsions to the sector, to the newspapaers of elite and big agencies specialized in economic information as Reuters, Thomson or Bloomberg. To the battle in Internet, there add the expansion of the informative economic power and the changes of mentality of the companies and of the audiences. All this has derived in a fierce

  20. The Large Millimeter Telescope- Gran Telescopio Milimetrico

    Science.gov (United States)

    Irvine, W. M.; Schloerb, F. P.; Carramiñana, A.; Carrasco, L.

    2004-11-01

    The Large Millimeter Telescope/Gran Telescopio Milimetrico (LMT) project is a collaboration between the University of Massachusetts and the Instituto Nacional de Astrofisica, Óptica y Electrónica to build a 50 m diameter telescope that will have good efficiency at wavelengths as short as 1 mm. The LMT will have an overall effective surface accuracy of 70 micrometers and an ultimate pointing accuracy of better than 1 arcsec, and will thus be the largest millimeter-wavelength telescope in the world. The LMT site is Sierra Negra in the state of Puebla, at 4,640 meters above sea level in Central Mexico. At 18° 59' N latitude, it offers good sky coverage of both hemispheres. The normally low humidity will allow operation of the radio telescope at frequencies as high as 345 GHz. The LMT will make use of recent advances in structural design and active control of surface elements to achieve the required surface and pointing accuracy. At the site the alidade has been erected and the back structure for the main reflector has been assembled, while the monitor and control system has been successfully tested on another telescope. The schedule calls for acceptance tests in 2006. The initial complement of instruments will include a 32 element, heterodyne focal plane array at 3mm; a large format, focal plane bolometer array; a unique wide band receiver and spectrometer to determine the redshifts of primordial galaxies, and a 4 element receiver for the 1mm band. With its excellent sensitivity and mapping speed, the LMT/GTM will be a powerful facility for planetary science. In particular, it will enable key observations of comets, planetary atmospheres, asteroids and KBOs.

  1. Crystallization Formulation Lab

    Data.gov (United States)

    Federal Laboratory Consortium — The Crystallization Formulation Lab fills a critical need in the process development and optimization of current and new explosives and energetic formulations. The...

  2. USNA DIGITAL FORENSICS LAB

    Data.gov (United States)

    Federal Laboratory Consortium — To enable Digital Forensics and Computer Security research and educational opportunities across majors and departments. Lab MissionEstablish and maintain a Digital...

  3. Fabrication and Prototyping Lab

    Data.gov (United States)

    Federal Laboratory Consortium — Purpose: The Fabrication and Prototyping Lab for composite structures provides a wide variety of fabrication capabilities critical to enabling hands-on research and...

  4. Magnetic Media Lab

    Data.gov (United States)

    Federal Laboratory Consortium — This lab specializes in tape certification and performance characterization of high density digital tape and isprepared to support the certification of standard size...

  5. Guidelines for Urban Labs

    DEFF Research Database (Denmark)

    Scholl, Christian; Agger Eriksen, Mette; Baerten, Nik

    2017-01-01

    urban lab initiatives from five different European cities: Antwerp (B), Graz and Leoben (A), Maastricht (NL) and Malmö (S). We do not pretend that these guidelines touch upon all possible challenges an urban lab may be confronted with, but we have incorporated all those we encountered in our...

  6. Breed effect between Mos rooster (Galician indigenous breed) and Sasso T-44 line and finishing feed effect of commercial fodder or corn.

    Science.gov (United States)

    Franco, D; Rois, D; Vázquez, J A; Purriños, L; González, R; Lorenzo, J M

    2012-02-01

    The aim of this research was to study the Mos rooster breed growth performance, carcass, and meat quality. The breed effect (Mos vs. Sasso T-44) and finishing feed in the last month (fodder vs. corn) on animal growth, carcass characteristics, meat quality, and fatty and amino acid profiles were studied using a randomized block design with initial weight as covariance. In total, 80 roosters (n = 30 of Sasso T-44 line and n = 50 of Mos breed) were used. They were separated by breed and allocated to 2 feeding treatment groups (concentrate and corn). Each feeding treatment group consisted of 15 and 25 roosters, for Sasso T-44 line and Mos breed, respectively. Finishing feeding did not affect growth parameters in the 2 genotypes of rooster tested (P > 0.05). Nonetheless, the comparison between both types of roosters led to significant differences in growth parameters (P 0.05) were found, and as expected, carcass weight clearly differed between genotypes due to the lower growth rate of Mos roosters. However, drumstick, thigh, and wing percentages were greater in the Mos breed than in the hybrid line. In color instrumental traits, roosters feeding with corn showed breast meat with significantly (P < 0.001) higher a* and b* values than those of cocks feeding with commercial fodder. Values of shear force were less than 2 kg for both genotypes, thus it can be classified as very tender meat. Finishing with corn significantly increased (P < 0.001) the polyunsaturated fatty acid content in the breast; the Mos breed had a polyunsaturated to saturated fatty acid ratio of 0.73. The amino acid profile of the indigenous breed was not similar to that of the commercial strain. Finishing feeding treatment had a greater influence than breed effect on amino acid profile.

  7. OpenLabNotes

    DEFF Research Database (Denmark)

    List, Markus; Franz, Michael; Tan, Qihua

    2015-01-01

    be advantageous if an ELN was Integrated with a laboratory information management system to allow for a comprehensive documentation of experimental work including the location of samples that were used in a particular experiment. Here, we present OpenLabNotes, which adds state-of-the-art ELN capabilities to Open......LabFramework, a powerful and flexible laboratory information management system. In contrast to comparable solutions, it allows to protect the intellectual property of its users by offering data protection with digital signatures. OpenLabNotes effectively Closes the gap between research documentation and sample management...

  8. The Udall Lab

    Data.gov (United States)

    Federal Laboratory Consortium — The Udall lab is interested in genome evolution and cotton genomics.The cotton genus ( Gossypium) is an extraordinarily diverse group with approximately 50 species...

  9. LIDAR Research & Development Lab

    Data.gov (United States)

    Federal Laboratory Consortium — The LIDAR Research and Development labs are used to investigate and improve LIDAR components such as laser sources, optical signal detectors and optical filters. The...

  10. Clothing Systems Design Lab

    Data.gov (United States)

    Federal Laboratory Consortium — The Clothing Systems Design Lab houses facilities for the design and rapid prototyping of military protective apparel.Other focuses include: creation of patterns and...

  11. Secure Processing Lab

    Data.gov (United States)

    Federal Laboratory Consortium — The Secure Processing Lab is the center of excellence for new and novel processing techniques for the formation, calibration and analysis of radar. In addition, this...

  12. Guidelines for Urban Labs

    DEFF Research Database (Denmark)

    Scholl, Christian; Agger Eriksen, Mette; Baerten, Nik

    2017-01-01

    These guidelines are intended for team members and managers of urban labs and, more generally, for civil servants and facilitators in cities working with experimental processes to tackle complex challenges. They aim to support the everyday practice of collaboratively experimenting and learning ho...... the result is inspiring and instructive for all those who want to wrap their minds around experimental co-creative approaches to urban governance and city development.......These guidelines are intended for team members and managers of urban labs and, more generally, for civil servants and facilitators in cities working with experimental processes to tackle complex challenges. They aim to support the everyday practice of collaboratively experimenting and learning how...... to create more sustainable and inclusive cities. Policy-makers and urban development stakeholders may struggle to implement urban labs, and seek guidance for further development. Evidence-based guidelines and design principles are needed to decide for which types of challeng- es urban labs are most suited...

  13. Laser Research Lab

    Data.gov (United States)

    Federal Laboratory Consortium — The Laser Research lab is thecenter for the development of new laser sources, nonlinear optical materials, frequency conversion processes and laser-based sensors for...

  14. Next Practise Labs

    DEFF Research Database (Denmark)

    2016-01-01

    Klaus Thestrup explains what Next Practise Labs are and how that involves both participants, the researcher and teachers. He also talks about how the term builds upon the open laboratory and experimenting communities - and cultures of creativity.......Klaus Thestrup explains what Next Practise Labs are and how that involves both participants, the researcher and teachers. He also talks about how the term builds upon the open laboratory and experimenting communities - and cultures of creativity....

  15. El Gran Catharro de 1580 ¿gripe o pertussis?

    Directory of Open Access Journals (Sweden)

    Camaño Puig, Ramón

    2005-12-01

    Full Text Available The gran Catharro (1580 is considered the first influenza epidemic. The analysis of various testimonies of the time may offer some doubts about whether or not it was so; and data strongly support that it was a pertussis epidemic.

    El Gran Catharro (1580 es considerado como la primera epidemia de gripe. El análisis conjunto de los datos contenidos en diferentes testimonios, suscita dudas respecto a que se tratara de una epidemia de gripe y apoyan la posibilidad de que se tratara de una de tos ferina.

  16. Studying Abroad: The Fundacion Gran Mariscal de Ayacucho.

    Science.gov (United States)

    Mauch, James E.

    The Fundacion Gran Mariscal de Ayacucho, a large Venezuelan scholarship program that sends students to study in the United States and other countries, is discussed. Information on program objectives, issues, and problems was obtained from work with students at the University of Pittsburgh, the literature, program records, and interviews with…

  17. Lab Attendance and Academic Performance

    OpenAIRE

    Adair, Kirk; Swinton, Omari H.

    2012-01-01

    The benefits from attendance of lectures have been established in the literature. This paper focuses on attendance not of the lecture, but of smaller labs. These labs are 50 minutes one-day-a-week sessions to emphasis material covered during lecture. Using a 200-student Principles of Economics class that covers microeconomics with six different labs, we investigate the effect of lab attendance on exam performance by taking into account individual characteristics. We find that lab attendance b...

  18. Comparison of growth performance, carcass components, and meat quality between Mos rooster (Galician indigenous breed) and Sasso T-44 line slaughtered at 10 months.

    Science.gov (United States)

    Franco, D; Rois, D; Vázquez, J A; Lorenzo, J M

    2012-05-01

    The aim of this research was to make a full study of the meat from Mos-breed roosters (Spanish indigenous chicken). To achieve this purpose, the type of breed (Mos vs. a hybrid line, Sasso T-44) and the effect of finishing treatment in the last month (corn vs. commercial fodder) on growth performance, carcass and meat quality (physicochemical and textural traits), fatty and amino acid profile, and sensorial description were studied. The finishing feeding effect did not modify the growth, but the differences between genotypes were statistically significant (P 0.05) were found, and carcass weight clearly differed between genotypes due to the lower growth rate of Mos roosters. Drumstick, thigh, and wing percentages were greater in Mos breed than in Sasso T-44 birds, whereas breast (15.2%), that is the most highly valued piece of the chicken, was similar for both genotypes. Significant differences in pH, protein, and ash content between genotypes have been found, whereas finishing feeding treatment had an effect on myoglobin and redness index (P meat from roosters fed with corn had a higher luminosity. Despite the fact of the slaughtered age of birds, values of shear force were slightly higher than 2 kg (2.11 kg) for both genotypes, thus it can be classified as very tender meat. Mos breed showed a higher percentage of polyunsaturated fatty acids (25.90 vs. 22.74; P < 0.001) and a lower percentage of monounsaturated fatty acids (35.14 vs. 38.95; P < 0.001) than Sasso T-44 chicken muscles. Surprisingly, birds finishing with the corn diet (2 times higher in linolenic acid than fodder) did not increase their polyunsaturated fatty acid level in the breast, obtaining in the Mos breed a polyunsaturated to saturated fatty acid ratio of 0.69. The amino acid profile of the indigenous-breed breast was not similar to that of the commercial-strain breast; besides, finishing feeding treatment had more of an effect on amino acid profile, affecting the majority of amino acids, with

  19. The NOAO Data Lab

    Science.gov (United States)

    Fitzpatrick, M.; Olsen, K.; Stobie, E. B.; Mighell, K. J.; Norris, P.

    2015-09-01

    We describe the NOAO Data Lab to help community users take advantage of current large surveys and prepare them even larger surveys in the era of LSST. The Data Lab will allow users to efficiently utilize catalogs of billions of objects, combine traditional telescope image and spectral data with external archives, share custom results with collaborators, publish data products to other users, and experiment with analysis toolkits. Specific science cases will be used to develop a prototype framework and tools, allowing us to work directly with scientists from survey teams to ensure development remains focused on scientifically productive tasks.

  20. SenseLab

    Science.gov (United States)

    Crasto, Chiquito J.; Marenco, Luis N.; Liu, Nian; Morse, Thomas M.; Cheung, Kei-Hoi; Lai, Peter C.; Bahl, Gautam; Masiar, Peter; Lam, Hugo Y.K.; Lim, Ernest; Chen, Huajin; Nadkarni, Prakash; Migliore, Michele; Miller, Perry L.; Shepherd, Gordon M.

    2009-01-01

    This article presents the latest developments in neuroscience information dissemination through the SenseLab suite of databases: NeuronDB, CellPropDB, ORDB, OdorDB, OdorMapDB, ModelDB and BrainPharm. These databases include information related to: (i) neuronal membrane properties and neuronal models, and (ii) genetics, genomics, proteomics and imaging studies of the olfactory system. We describe here: the new features for each database, the evolution of SenseLab’s unifying database architecture and instances of SenseLab database interoperation with other neuroscience online resources. PMID:17510162

  1. CDC Lab Values

    Centers for Disease Control (CDC) Podcasts

    2015-02-02

    More than fifteen hundred scientists fill the lab benches at CDC, logging more than four million hours each year. CDC’s laboratories play a critical role in the agency’s ability to find, stop, and prevent disease outbreaks. This podcast provides a brief overview of what goes on inside CDC’s labs, and why this work makes a difference in American’s health.  Created: 2/2/2015 by Office of the Associate Director for Communication (OADC).   Date Released: 2/2/2015.

  2. The Crime Lab Project.

    Science.gov (United States)

    Hein, Annamae J.

    2003-01-01

    Describes the Crime Lab Project, which takes an economical, hands-on, interdisciplinary approach to studying the career of forensics in the middle or high school classroom. Includes step-by-step student requirements for the investigative procedure, a sample evidence request form, and an assessment rubric. (KHR)

  3. Physics lab in spin

    CERN Multimedia

    Hawkes, N

    1999-01-01

    RAL is fostering commerical exploitation of its research and facilities in two main ways : spin-out companies exploit work done at the lab, spin-in companies work on site taking advantage of the facilities and the expertise available (1/2 page).

  4. A Big Bang Lab

    Science.gov (United States)

    Scheider, Walter

    2005-01-01

    The February 2005 issue of The Science Teacher (TST) reminded everyone that by learning how scientists study stars, students gain an understanding of how science measures things that can not be set up in lab, either because they are too big, too far away, or happened in a very distant past. The authors of "How Far are the Stars?" show how the…

  5. Lab on paper

    NARCIS (Netherlands)

    Zhao, Weian; van den Berg, Albert

    2008-01-01

    Lab-on-a-chip (LOC) devices, which are suited to portable point-of-care (POC) diagnostics and on-site detection, hold great promise for improving global health, and other applications.1–8 While their importance and utility are widely acknowledged and extensive research has been conducted in the

  6. Gran method for end point anticipation in monosegmented flow titration

    Directory of Open Access Journals (Sweden)

    Aquino Emerson V

    2004-01-01

    Full Text Available An automatic potentiometric monosegmented flow titration procedure based on Gran linearisation approach has been developed. The controlling program can estimate the end point of the titration after the addition of three or four aliquots of titrant. Alternatively, the end point can be determined by the second derivative procedure. In this case, additional volumes of titrant are added until the vicinity of the end point and three points before and after the stoichiometric point are used for end point calculation. The performance of the system was assessed by the determination of chloride in isotonic beverages and parenteral solutions. The system employs a tubular Ag2S/AgCl indicator electrode. A typical titration, performed according to the IUPAC definition, requires only 60 mL of sample and about the same volume of titrant (AgNO3 solution. A complete titration can be carried out in 1 - 5 min. The accuracy and precision (relative standard deviation of ten replicates are 2% and 1% for the Gran and 1% and 0.5% for the Gran/derivative end point determination procedures, respectively. The proposed system reduces the time to perform a titration, ensuring low sample and reagent consumption, and full automatic sampling and titrant addition in a calibration-free titration protocol.

  7. INTERNET Y CONTROL SOCIAL. ENTRE RIZOMA Y GRAN HERMANO

    Directory of Open Access Journals (Sweden)

    Massimo Ragnedda

    2011-01-01

    Full Text Available Gran hermano y rizoma son metáforas cada vez más utilizadas cuando se habla de Internet. En la red estamos continuamente monitorizados: se recogen y catalogan datos e información como si se tratase de un cyberpanopticón: de ahí la metáfora del gran hermano electrónico. La red siente la necesidad de imponer un control cuyo objetivo es uniformar el comportamiento de los usuarios. Pero Internet es, además, una estructura rizomática difícilmente encajable en modelos rígidos. Internet rechaza, por su propia naturaleza, la centralización del poder en beneficio de la autogestión. ¿Cómo pueden coexistir un sistema de vigilancia tipo gran hermano con las características rizomáticas de la red? Estas este artículo se analizan ambas metáforas y se busca una síntesis de ambos conceptos.

  8. Digital Social Science Lab

    DEFF Research Database (Denmark)

    Svendsen, Michael; Lauersen, Christian Ulrich

    2015-01-01

    at the Faculty of Social Sciences. DSSL will host and facilitate an 80 m2 large mobile and intelligent study- and learning environment with a focus on academic events, teaching and collaboration. Besides the physical settings DSSL has two primary functions: 1. To implement relevant social scientific software......At the Faculty Library of Social Sciences (part of Copenhagen University Library) we are currently working intensely towards the establishment of a Digital Social Science Lab (DSSL). The purpose of the lab is to connect research, education and learning processes with the use of digital tools...... and hardware at the disposal for students and staff at The Faculty of Social Sciences along with instruction and teaching in the different types of software, e.g. Stata, Nvivo, Atlas.ti, R Studio, Zotero and GIS-software. 2. To facilitate academic events focusing on use of digital tools and analytic software...

  9. Nordic Study Labs

    DEFF Research Database (Denmark)

    Jørnø, Rasmus Leth Vergmann; Hestbech, Astrid Margrethe; Gynther, Karsten

    2016-01-01

    Denne rapport dokumenterer projektet Nordplus projektet The Nordic Study Lab. Projektet har haft til formål at udveksle eksisterende viden blandt projektdeltagerne om etablering og drift af distribueret uddannelse med særlig fokus på læringscentre. I løbet af en serie af studiebesøg har partnere...... med at skabe kvalificeret uddannelse på distancen. Nordic Study Labs projektet har afsløret et rigt reservoir af eksisterende erfaringer, med et stort transferpotentiale og både unikke og eksemplariske løsninger på uddannelses­ problematikker. Mange af de nordiske lande har mange års succesrige...

  10. 2 Hoteles en Almería - Gran Hotel Almería –Alcazaba Gran Hotel

    Directory of Open Access Journals (Sweden)

    Cassinello, F.

    1970-05-01

    Full Text Available This article describes the above two hotels, one of which is a town hotel, namely the «Gran Hotel Almería », and the other a touristic hotel situated near the beach and close to sporting facilities. Both hotels are of 1. A classification, and have been carefully designed; they have basic characteristics that are common to both, but have many secondary features that are specific of each, depending on their emplacement and use.En este artículo se describen dos instalaciones hoteleras: una, de carácter urbano, «Gran Hotel Almería»; otra, eminentemente deportiva y de playa, «Alcazaba Gran Hotel». Ambos edificios son de categoría cuatro estrellas y se han estudiado cuidadosamente, plasmando características básicas y fundamentales comunes, pero con detalles distintivos que las diferencian, en función de su emplazamiento y utilización.

  11. Accidente Isquémico Transitorio: la gran oportunidad

    Directory of Open Access Journals (Sweden)

    Mª Dolores Fernández Couto

    2013-09-01

    Full Text Available El ictus constituye la primera causa de muerte en mujeres y la segunda causa de muerte global en España1, así como la primera causa de discapacidad adquirida en la edad adulta y la segunda causa de demencia por detrás de la enfermedad de Alzheimer. El accidente isquémico transitorio (AIT precede al ictus isquémico en un 23% de los casos2. Esta señal de alarma, lejos de poder considerarse banal, constituye una gran oportunidad para la prevención.

  12. Hirschman: Un gran científico social

    Directory of Open Access Journals (Sweden)

    Luis Armando Blanco

    2013-06-01

    Full Text Available Albert Hirschman fue un gran científico social comprometido con la justicia y la democracia. Este artículo, un pequeño homenaje en su memoria, analiza su libro principal, La estrategia del desarrollo económico, y sus reflexiones sobre la industrialización tardía, la inflación, el déficit de balanza de pagos, la hipótesis de los eslabonamientos y la relación entre la teoría del desarrollo y la teoría económica.

  13. Radon in Groundwater of the Northeastern Gran Canaria Aquifer

    OpenAIRE

    Alonso, Héctor; Cruz-Fuentes, Tatiana; Rubiano, Jesús; González-Guerra, Jonay; Cabrera, María; Arnedo, Miguel; Tejera, Alicia; Rodríguez-Gonzalez, Alejandro; Pérez-Torrado, Francisco; Martel, Pablo

    2015-01-01

    222Rn has been detected in 28 groundwater samples from the northeast of Gran Canaria (Canary Islands, Spain) utilizing a closed loop system consisting of an AlphaGUARD monitor that measures radon activity concentration in the air by means of an ionization chamber, and an AquaKIT set that transfers dissolved radon in the water samples to the air within the circuit. Radon concentration in the water samples studied varies between 0.3 and 76.9 Bq/L. Spanish radiological protection regulations lim...

  14. Archimedes Remote Lab for Secondary Schools

    NARCIS (Netherlands)

    Garcia Zubia, J.; Angulo Martinez, I.; Martinez Pieper, G.; Lopez de Ipina Gonzalez de Artaza, D.; Hernandez Jayo, U.; Orduna Fernandez, P.; Dziabenko, O.; Rodriguez Gil, L.; van Riesen, Siswa; Anjewierden, Anjo Allert; Kamp, Ellen; de Jong, Anthonius J.M.

    2015-01-01

    This paper presents a remote lab designed for teaching the Archimedes’ principle to secondary school students, as well as an online virtual lab on the general domain of buoyancy. The Archimedes remote lab is integrated into WebLab-Deusto. Both labs are promoted for usage in frame of the Go-Lab

  15. DESY NanoLab

    Directory of Open Access Journals (Sweden)

    Andreas Stierle

    2016-06-01

    Full Text Available The DESY NanoLab is a facility providing access to nano-characterization, nano-structuring and nano-synthesis techniques which are complementary to the advanced X-ray techniques available at DESY’s light sources. It comprises state-of-the art scanning probe microscopy and focused ion beam manufacturing, as well as surface sensitive spectroscopy techniques for chemical analysis. Specialized laboratory x-ray diffraction setups are available for a successful sample pre-characterization before the precious synchrotron beamtimes. Future upgrades will include as well characterization of magnetic properties.

  16. e-Learning - Physics Labs

    Science.gov (United States)

    Mohottala, Hashini

    2014-03-01

    The general student population enrolled in any college level class is highly diverse. An increasing number of ``nontraditional'' students return to college and most of these students follow distance learning degree programs while engaging in their other commitments, work and family. However, those students tend to avoid taking science courses with labs, mostly because of the incapability of remotely completing the lab components in such courses. In order to address this issue, we have come across a method where introductory level physics labs can be taught remotely. In this process a lab kit with the critical lab components that can be easily accessible are conveniently packed into a box and distributed among students at the beginning of the semester. Once the students are given the apparatus they perform the experiments at home and gather data All communications with reference to the lab was done through an interactive user-friendly webpage - Wikispaces (WikiS). Students who create pages on WikiS can submit their lab write-ups, embed videos of the experiments they perform, post pictures and direct questions to the lab instructor. The students who are enrolled in the same lab can interact with each other through WikiS to discuss labs and even get assistance.

  17. Urban Living Labs: A living lab way of working

    OpenAIRE

    van Bueren, E.M.

    2017-01-01

    Urban living labs have become a popular phenomenon in today’s cities. The Living Lab approach would provide real life research with its multiple stakeholders in a co-innovating inclusive setting, crucial in creating metropolitan solutions with impact, that will be adopted smoothly and swiftly by all involved, and thus help achieve prosperous living environments that are more liveable, sustainable, resilient and just. With these ambitions, urban living labs are important links in the achieveme...

  18. 5 Pre-Lab and Lab Activities for Newtonian Mechanics

    Science.gov (United States)

    Mangold, James

    2010-03-01

    Key to success of a lab activity is the student's prerequisite skills. This workshop focuses on 5 pre-lab white board activities with the corresponding lab activities in Newtonian mechanics utilizing the GMLAD. The activities will cover projectile motion; kinematics, Newton's 2nd Law, Determination of Friction and its Coefficient, Conservation of Energy, Determination of the Spring Constant, and Conservation of Momentum in 2 Dimensions. Limited to 24 participants - 2 hours - Cost 5.00

  19. Tritium at Jefferson Lab

    Science.gov (United States)

    Bane, Jason; Jefferson Lab Hall A Collaboration Collaboration

    2017-09-01

    Jefferson Lab's recently upgraded accelerator will provide the perfect opportunity to increase the quality and quantity of the electron scattering world data on tritium. Tritium, the radioactive isotope of hydrogen with a half-life of 12 years, was last used in a large scale electron scattering experiment a few decades ago. This Fall Jefferson Lab will play host to a set of very exciting electron scattering experiments involving tritium. A 25 cm aluminum cell will be filled with 1 kCi of tritium with an internal pressure of approximately 200 psi at 295 kelvin. The tritium target will first see a 10.6 GeV beam to probe the deep inelastic scattering region to study the down to up quark ratio and the EMC effect. Then the beam will be set to 4.3 GeV to investigate SRCs and momentum distributions in the quasi-elastic scattering regime. If time permits, elastic scattering will be used to extract the ratio of the charge radius of tritium and helium3.

  20. Urban Living Labs : A living lab way of working

    NARCIS (Netherlands)

    van Bueren, E.M.

    2017-01-01

    Urban living labs have become a popular phenomenon in today’s cities. The Living Lab approach would provide real life research with its multiple stakeholders in a co-innovating inclusive setting, crucial in creating metropolitan solutions with impact, that will be adopted smoothly and swiftly by all

  1. The Jefferson Lab Program

    International Nuclear Information System (INIS)

    The kW-class infrared (IR) free electron laser (FEL) at the Thomas Jefferson National Accelerator Facility (Jefferson Lab) had the capability of producing intra-cavity Thomson scattering of the IR off the electron beam thus producing high average flux, sub-picosecond x-rays. We have measured these x-rays and demonstrated the energy tunability range from 3.5 keV to 18 keV. The corresponding flux and brightness have been estimated and will be discussed. In 2002, the FEL was disassembled and has been reconfigured to produce 10 kW average power IR. We present the estimated x-ray capabilities for the new FEL and discuss potential applications

  2. The lab of fame

    CERN Multimedia

    Antonella Del Rosso

    2014-01-01

    For a third time, CERN is organising the Swiss heat of Famelab, the world’s leading science communication competition that has already gathered over 5,000 young and talented scientists and engineers from all across the planet.   Besides their degrees, the scientists who participate in Famelab have another thing in common: their passion for communicating science. Coming from a variety of scientific fields, from medicine to particle physics and microbiology, the contestants have three minutes to present a science, technology, mathematics or engineering-based talk using only the props he or she can carry onto the stage; PowerPoint presentations are not permitted. The contestants are then judged by a panel of three judges who evaluate the content, clarity and charisma of their talks. What's unique about FameLab is the fact that content is an important aspect of the performance. At the end of their presentation, contestants are often questioned about the scientific relevance of...

  3. GitLab repository management

    CERN Document Server

    Hethey, Jonathan

    2013-01-01

    A simple, easy to understand tutorial guide on how to build teams and efficiently use version control, using GitLab.If you are a system administrator in a company that writes software or are in charge of an infrastructure, this book will show you the most important features of GitLab, including how to speed up the overall process

  4. Thinking Outside the Lab

    Science.gov (United States)

    Colter, Tabitha

    2017-01-01

    As an undergraduate physics major who spent 2015 deep in a quantum optics lab at Oak Ridge National Laboratory, I knew my 2016 experience with the House of Representatives Energy and Commerce Committee would be a completely new challenge. I have long had a passion for the bridge of communication between the technical and non-technical worlds but it was only through my AIP Mather internship this summer that I was able to see that passion come to life in the realm of science policy. Suddenly, I went from squeezing political philosophy classes into my packed schedule to witnessing the political process first-hand. I was thrilled to find that the skills of critical thinking and communicating complex issues I have developed throughout my training as a physicist were directly applicable to my work in Congress. Overall, my experience this summer has given me insight into the inner workings of the federal policy process, deepened my appreciation for the work of government employees to keep Congressional members informed on the pressing current issues, and exposed me to a whole range of alternative careers within science. AIP and SPS

  5. Gran colector bajo el Danubio en Linz – Austria

    Directory of Open Access Journals (Sweden)

    Editorial, Equipo

    1977-07-01

    Full Text Available The mission of this huge under-river sewer is to carry the waste water from the left bank of the Danube to the other side of the river where a large sewage treatment plant is being constructed. In order to carry out its 375 m in length and 2.4 m inside diameter, where several drain pipes and ducts for remote heating and supply of electric power are housed, a system of pressure propulsion has been sed. This system is based on a series of hydraulic presses, which gradually insert into the ground the prefabricated reinforced concrete tubular elements, 3 m in length, which form the sewer. The work on the aforementioned sewer is completed with a pumping well located on the left bank and originated by the difference in level between the connections of the respective sewers on each side of the river — as well as a collection well, situated on the right bank, which links up with the main sewer of the treatment plant. Both wells are built with reinforced concrete.La misión de este gran colector subfluvial es la de conducir las aguas residuales procedentes de la orilla izquierda del Danubio al otro lado del río, en donde se está construyendo una gran planta depuradora. Para la realización de sus 373 m de longitud y 2,40 m de diámetro interior, donde se albergan diversas tuberías de desagüe y conductos para calefacción a distancia y suministro de energía eléctrica, se ha empleado un sistema de propulsión a presión. Dicho sistema se basa en una serie de prensas hidráulicas, que van introduciendo en el terreno los elementos tubulares prefabricados de hormigón armado, de 3 m de longitud, que constituyen el colector. Los trabajos del citado colector se completan con un pozo de bombeo —situado en la orilla izquierda y originada por la diferencia de nivel existente entre las acometidas de los respectivos colectores de ambos lados del río— y otro de recogida, emplazado en la orilla derecha, que enlaza con el colector principal de la

  6. Inversores multinivel para aplicaciones de gran potencia. Estado del arte

    Directory of Open Access Journals (Sweden)

    Ivonne Yznaga Blanco

    2011-02-01

    Full Text Available Los convertidores clásicos de frecuencia construidos a partir de inversores de dos niveles como fuentesde tensión o corriente presentan una serie de inconvenientes que provocan daños a la calidad de laenergía, así como al comportamiento de los equipos eléctricos alimentados por estos, especialmentepara aplicaciones de gran potencia. El convertidor multinivel es, hasta la fecha, la mejor alternativa pararesolver estas dificultades. En el artículo se describen los principios fundamentales de operación de losprincipales tipos de convertidores multinivel y sus aplicaciones.  The classical frequency converter made up from a two level voltage or current source inverter has severalimportant drawbacks that injure the electrical system power quality and the behaviour of the electricalapparatus fed by them specially at high power applications. The multilevel converter is, up to date, thebest choice for solving these problems. This paper describe the elementary principle of operation of themain types of multilevel converters and its applications.

  7. INVERSORES MULTINIVEL PARA APLICACIONES DE GRAN POTENCIA. ESTADO DEL ARTE

    Directory of Open Access Journals (Sweden)

    Ivonne Yznaga Blanco

    2011-02-01

    Full Text Available Los convertidores clásicos de frecuencia, construidos a partir de inversores de dos niveles comofuentes de tensión o corriente, presentan una serie de inconvenientes que provocan daños a la calidadde la energía así como al comportamiento de los equipos eléctricos alimentados por los mismos,especialmente para aplicaciones de gran potencia. El convertidor multinivel es, hasta la fecha, lamejor alternativa para resolver estas dificultades. Este artículo describe los principios fundamentalesde operación de los principales tipos de convertidores multinivel y sus aplicaciones.  The classical frequency converter made up from a two level voltage or current source inverterhas several important drawbacks that injure the electrical system power quality and thebehaviour of the electrical apparatus fed by them specially at high power applications. Themultilevel converter is, up to date, the best choice for solving these problems. This paper describethe elementary principle of operation of the main types of multilevel converters and itsapplications.

  8. El empleo del yeso en Gran Bretaña

    Directory of Open Access Journals (Sweden)

    Foster, N.

    1965-03-01

    Full Text Available Not availableSección l.-Introducción Resume brevemente la historia del yeso en Gran Bretaña, yacimientos y demanda de este producto después de la guerra. Sección Il.-Tipos de yeso Describe los diferentes tipos y grados de densidad, ligeros premezclados y sus usos principales. Se comparan las características de los yesos de acabado. También se introducen los yesos para paredes delgadas. Sección lll.-Especificaciones para enlucidos Se resumen, en forma de tabla, sistemas convenientes de enlucidos de yeso para distintos soportes. Se indican las propiedades de los soportes que influencian en la elección de la especificación. También se muestran las especificaciones de recubrimientos intermedios y de acabado, teniendo en cuenta el tipo de soporte. Asimismo se incluyen especificaciones para una sola capa para fondos adecuados. Sección IV.-Revoco de hormigón denso Se examinan los factores que afectan la adherencia del yeso para alisar hormigón denso, así como los resultados del trabajo experimental y las investigaciones «in situ» dirigidas por la «Building Research Station». Además, se indican medidas para mejorar la adherencia del yeso al hormigón.

  9. Radon in Groundwater of the Northeastern Gran Canaria Aquifer

    Directory of Open Access Journals (Sweden)

    Héctor Alonso

    2015-05-01

    Full Text Available 222Rn has been detected in 28 groundwater samples from the northeast of Gran Canaria (Canary Islands, Spain utilizing a closed loop system consisting of an AlphaGUARD monitor that measures radon activity concentration in the air by means of an ionization chamber, and an AquaKIT set that transfers dissolved radon in the water samples to the air within the circuit. Radon concentration in the water samples studied varies between 0.3 and 76.9 Bq/L. Spanish radiological protection regulations limit the concentration of 222Rn for drinking water to 100 Bq/L, therefore the values obtained for all the analyzed samples are below this threshold. The hydrogeological study reveals a significant correspondence between the radon activity concentration and the material characteristics of the aquifer. For a selected group of samples with high radon concentrations, gross alpha activity has been determined to have values higher than the prescriptive screening level (0.1 Bq/L.

  10. Casa en Feock, Cornwall - Gran Bretaña

    Directory of Open Access Journals (Sweden)

    Rogers, R.

    1970-12-01

    Full Text Available This project seeks to integrate the house as much as possible with the surrounding landscape. From its interior there is an excellent view of the beautiful countryside, and the inside distribution provides facilities for exhibiting a fine collection of painting and modern sculpture, as well as a large number of books, possessed by the house owners. This building is designed round two main axes. One leads from the road and parking site, across a bridge, to the main gate; whilst the other coincides with a broad gallery, which besides connecting all the rooms, serves for the exhibition of the painting and sculptures mentioned previously.El proyecto ha sido orientado al logro de una máxima integración de la casa en el paisaje circundante. Desde su interior se disfruta de las bellas vistas panorámicas exteriores, y la distribución iennite que sus propietarios puedan lucir una excepcional colección de pinturas y esculturas modernas y gran número de libros que poseen. En esta edificación pueden distinguirse dos ejes: uno que conduce desde la carretera y la zona de aparcamiento —a través de un puente—, a la puerta principal; y otro, materializado por una galería que, además de relacionar todas las dependencias, sirve para la exhibición de cuadros y esculturas antes citados.

  11. Las remesas indianas en Gran Canaria en el primer cuarto del siglo XVII

    Directory of Open Access Journals (Sweden)

    Elisa TORRES SANTANA

    2009-12-01

    Full Text Available El estudio de las remesas indianas, del dinero que bien en efectivo o en joyas afluía a la isla de Gran Canaria procedente del continente americano, ha sido un problema que ha preocupado en gran medida a los historiadores canarios. Sin embargo, su análisis siempre ha resultado problemático, por varias razones.

  12. Valuing Water in a Changing Climate and Economy in the Gran ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Valuing Water in a Changing Climate and Economy in the Gran Chaco Americano. Climate change and deforestation are causing extreme drought, intense rainfall, and flooding in the Gran Chaco Americano. This vast plain extends through northern Argentina, southeastern Bolivia, northwestern Paraguay, and into ...

  13. Advanced Active Acoustics Lab (AAAL)

    Data.gov (United States)

    Federal Laboratory Consortium — The Advanced Active Acoustics Lab (AAAL) is a state-of-the-art Undersea Warfare (USW) acoustic data analysis facility capable of both active and passive underwater...

  14. An Annotated Math Lab Inventory.

    Science.gov (United States)

    Schussheim, Joan Yares

    1980-01-01

    A listing of mathematics laboratory material is organized as follows: learning kits, tape programs, manipulative learning materials, publications, math games, math lab library, and an alphabetized listing of publishers and/or companies offering materials. (MP)

  15. Pollution hazard closes neutrino lab

    CERN Multimedia

    Jones, Nicola

    2003-01-01

    "A leading astrophysics laboratory in Italy has closed down all but one of its experiments over concerns that toxic polluants could leak form the underground lab into the local water supply" (0.5 page)

  16. Common Systems Integration Lab (CSIL)

    Data.gov (United States)

    Federal Laboratory Consortium — The Common Systems Integration Lab (CSIL)supports the PMA-209 Air Combat Electronics Program Office. CSIL also supports development, test, integration and life cycle...

  17. Virtual Labs and Virtual Worlds

    Science.gov (United States)

    Boehler, Ted

    2006-12-01

    Virtual Labs and Virtual Worlds Coastline Community College has under development several virtual lab simulations and activities that range from biology, to language labs, to virtual discussion environments. Imagine a virtual world that students enter online, by logging onto their computer from home or anywhere they have web access. Upon entering this world they select a personalized identity represented by a digitized character (avatar) that can freely move about, interact with the environment, and communicate with other characters. In these virtual worlds, buildings, gathering places, conference rooms, labs, science rooms, and a variety of other “real world” elements are evident. When characters move about and encounter other people (players) they may freely communicate. They can examine things, manipulate objects, read signs, watch video clips, hear sounds, and jump to other locations. Goals of critical thinking, social interaction, peer collaboration, group support, and enhanced learning can be achieved in surprising new ways with this innovative approach to peer-to-peer communication in a virtual discussion world. In this presentation, short demos will be given of several online learning environments including a virtual biology lab, a marine science module, a Spanish lab, and a virtual discussion world. Coastline College has been a leader in the development of distance learning and media-based education for nearly 30 years and currently offers courses through PDA, Internet, DVD, CD-ROM, TV, and Videoconferencing technologies. Its distance learning program serves over 20,000 students every year. sponsor Jerry Meisner

  18. Teatro Nacional de Londres Gran Bretaña

    Directory of Open Access Journals (Sweden)

    Lasdun, Denys

    1979-08-01

    Full Text Available The building located by the Thames, near Waterloo Bridge, houses three theatres: the Olivier, the Lyttelton and the Cottesloe, each provided with all facilities required, such as actors' dressing rooms, rehearsal rooms, offices, costuming and wigs stores, ample lobbies, restaurants, bars, car park and other amenities. The entire structure is reinforced concrete throughout the building and the outside walls of this important complex are also a whitish concrete. The two stage towers stand out gracefully from the ample, step terraced lower body creating shadowed areas and visual facets of great beauty visible from the not too distant City: the River and Waterloo Bridge at one side, and St. Paul's Cathedral at the other.

    Situado en las orillas del Támesis y junto al puente de Waterloo comprende tres teatros: Olivier, Lyttelton y Cottesloe dotados de todos los servicios auxiliares necesarios, tales como camerinos, salas de ensayo, despachos, almacenes de vestuarios, pelucas, etc.; amplios vestíbulos, restaurantes, bares, y aparcamientos de automóviles. Toda la estructura resistente es de hormigón armado y la fisonomía exterior del importante complejo es igualmente de hormigón blanquecino. Las dos torres de escenarios destacan airosamente de la parte baja, amplía y con terrazas escalonadas, que crean zonas de sombra y facetas plásticas, de gran belleza, de cara a la ciudad, más o menos próxima: el río y el puente por un lado y la Catedral de San Pablo por otro.

  19. Repensando el Caribe: valoraciones sobre el gran Caribe hispano

    Directory of Open Access Journals (Sweden)

    Joaquín Santana Castillo

    2014-01-01

    Full Text Available Todo intento de estudiar las ideas y su evolución histórica en lo que hoy en día se denomina Caribe, exige siempre un esfuerzo adicional para el estudioso: el pensar y repensar el Caribe, debido a la diversidad de criterios y puntos de vista que existen sobre la región y los países que la integran. El problema no se hace menor cuando se reduce el referente al contexto del Caribe hispano, pues, en este caso, existe igualmente disparidad de opiniones. El presente estudio se propone explorar las diferentes interpretaciones existentes en la historiografía del concepto Caribe y determinar cuales son los elementos y factores comunes en la misma. Foco de atención principal es el Gran Caribe Hispano. Por tanto, lo que se tratará es en pensar y redefinir el Caribe.Palabras Clave: Caribe; Hispanoamérica; Historiografía; Pensamiento; Identidad y Cultura. Rethink the Caribbean: valuations on the great Hispanic CaribbeanAbstractAll attempt to study the ideas and their historical evolution in which nowadays we denominated the Caribbean, always demands an additional effort for the student: thinking and rethink the Caribbean, due to the diversity of criteria and country and points of view that exist on the region that integrate it. The problem is not made minor when the referring one to the context of the Hispanic Caribbean is reduced, then, in this case, also exists disparity of opinions. The present study sets out to explore the different existing interpretations in the historiography from the Caribbean concept and to determine as they are the elements and factors common in the same one. Main center of attention is the Great Hispanic Caribbean. Therefore, which will treat is in thinking and redefining the Caribbean.Keywords: The Caribbean; Hispano-America; Historiography; Thought; Identity and Culture. 

  20. El Chicamocha: Río del Vino de Gran Altura

    Directory of Open Access Journals (Sweden)

    Marco Quijano Rico

    2007-10-01

    Full Text Available Nuestro proyecto de viticultura tropical de calidad se inició en la Loma de Puntalarga, en el Valle del Sol en 1982. Los viñedos están situados a gran altura entre los 2400 y los 2600 metros, en terrenos inclinados, consuelos de buena vocación vitícola, bastante brillo solar, calor diurno, frío nocturno y déficit hídrico; condiciones necesarias para producir uvas de alta calidad para vinificación. El cultivo se viene extendiendo desde los años noventa por diversos lugares. En este proceso el río Chicamocha parece ejercer un efecto similar al de otros ríos del vino. Entre los ríos más representativos del hábitat tradicional de las variedades cultivadas en la región, Riesling blanca y Pinot noir, están respectivamente el Rin en Alemania y el Saona en Francia. La distribución geográfica del desarrollo vitícola sigue la dirección del curso del río Chicamocha y prácticamente recubre a la de en claves poblacionales que influenciaba el centro religioso de Sogamoso, antes de la llegada de los españoles en 1537. Algo similar sucede con la distribución de cepas descendientes de la variedad Mission, probablemente introducida por jesuitas a Firavitoba en el siglo XVII. Parece que estos fenómenos podrían relacionarse en menor o mayor grado con la historia geológica regional, en particular la del río Chicamocha. Su conocimiento puede proporcionar valiosas claves sobre los fundamentos del “terroir” y contribuir a acrecentar el carisma, asentado en la calidad, que ya revela el vino regional.

  1. HOMENAJE PÓSTUMO A UN GRAN COLOMBIANO.

    Directory of Open Access Journals (Sweden)

    Jaime Eraso López

    2016-12-01

    Full Text Available

    HOMENAJE PÓSTUMO A UN GRAN COLOMBIANO

    Jaime Eraso López

    A la edad de 99 años, falleció la semana pasada en Bogotá el Académico y maestro de la medicina Dr. Hernando Groot Liévano conocido por ser un científico e investigador de talla continental, por lo que la comunidad nacional e internacional han lamentado profundamente este aciago acontecimiento. Como su labor de investigador estuvo ligada al departamento de Nariño cuando permaneció dos meses en la ciudad de Pasto en 1939 con el fin de descubrir la causa de una epidemia que mató a más de 8.000 personas en la zona del Guáitara, en compañía de otros tres médicos que se desplazaron desde Bogotá, mientras se desempeñaba como Jefe del Laboratorio de Salud Pública el Dr. Luis Eduardo Martínez, es justo rendirle un homenaje póstumo que permita, además, trazar en pocas líneas la semblanza de su incomparable trayectoria.

    La epidemia a la que me referí, de carácter infecciosa, fue el resultado de la acción de una bacteria llamada Bartonella, de ahí el nombre de bartonelosis o enfermedad de Carrión, que se expande a través de un mosquito transmisor y produce la destrucción de los glóbulos rojos de la sangre conllevando a la aparición de una anemia severa y a la ulterior muerte. Su descubrimiento tuvo lugar en Sandoná cuando se logró identificar la bacteria bajo el lente del microscopio; bacteria parecida al parásito del paludismo.

    Hace 7 años nos visitó nuevamente el Dr. Groot y durante su magistral conferencia detalló los hallazgos de su investigación con gran dominio del tema, cualidad propia de una inteligencia superior, sin olvidar los nombres de cada uno de los médicos de la época. Aquel evento fue ocasión para que los académicos pastusos le hiciéramos entrega de una hermosa placa a madera condecorativa de agradecimiento por su amor a Nariño y como muestra de su gran calidad humana, cuando se

  2. Status of chemistry lab safety in Nepal

    Science.gov (United States)

    Kandel, Krishna Prasad; Neupane, Bhanu Bhakta

    2017-01-01

    Chemistry labs can become a dangerous environment for students as the lab exercises involve hazardous chemicals, glassware, and equipment. Approximately one hundred thousand students take chemistry laboratory classes annually in Nepal. We conducted a survey on chemical lab safety issues across Nepal. In this paper, we assess the safety policy and equipment, protocols and procedures followed, and waste disposal in chemistry teaching labs. Significant population of the respondents believed that there is no monitoring of the lab safety in their lab (p<0.001). Even though many labs do not allow food and beverages inside lab and have first aid kits, they lack some basic safety equipment. There is no institutional mechanism to dispose lab waste and chemical waste is disposed haphazardly. Majority of the respondents believed that the safety training should be a part of educational training (p = 0.001) and they would benefit from short course and/or workshop on lab safety (p<0.001). PMID:28644869

  3. GenLab, Laboratorio Virtual de Genética

    Directory of Open Access Journals (Sweden)

    Fidel Ramírez

    2000-07-01

    Full Text Available GenLab es el nombre que tiene el software diseñado por nosotros, en el cual se modela el proceso meiótico y la fecundación en organismos diploides. El objetivo de esta aplicación es ilustrar el resultado de un cruce determinado, tratando de ser lo más ajustados a la realidad. La modelación de la reproducción sexual se realiza internamente y el GenLab se limita a presentar los resultados según el número de descendencia seleccionado para un cruce específico, esto significa que se puede escoger una gran cantidad de características para los parentales y se puede estudiar la frecuencia de estos en la descendencia. El modelo cuenta con base de datos donde están almacenados algunos de los locus de Drosophila melanogaster junto con su ubicación en centimorgans 1. EI propósito de este modelo es servir como herramienta pedagógica  y didáctica tanto en universidades como en colegios, facilitando el aprendizaje de algunos principios básicos de la genética, por lo cual puede ser usado si se cuenta con una conexión a Internet y un navegador visitando http://biologia.unal.edu.co/fidel.

  4. La «Gran Depresión» versus la «Gran Recesión». Cracs financieros y crisis industriales

    OpenAIRE

    Parejo Barranco, José Antonio; Sudrià, Carles

    2017-01-01

    Este artículo analiza y compara la evolución del sector industrial durante la «Gran Depresión» de la década de 1930 y la «Gran Recesión» que comenzó en 2007, utilizando el mejor indicador sintético disponible, el Índice de la Producción Industrial. El objetivo principal es actualizar y ampliar el ejercicio presentado por Barry Eichengreen y Kevin O’Rourke en 2009 y 2010 en el sitio web voxEU. Además de ampliar el análisis de la «Gran Recesión» con los últimos datos mensuales disponibles a niv...

  5. Baroque Apocalypse in Homero Aridjis’ «Gran teatro del fin del mundo»

    Directory of Open Access Journals (Sweden)

    Laurence Pagacz

    2014-11-01

    Full Text Available The present article provides a (neobaroque reading of the dystopic and postapocalyptic universe of Homero Aridjis’ (Mexico, 1940 Gran teatro del fin del mundo. The use of dystopia and allegory subverts the Western anthropologic paradigm: utopias of continuous progress and triumphant individualism can be read in reverse. The analysis is structured in three parts: first part establishes the nature of intertextual relationship with Calderón’s baroque piece El gran teatro del mundo; second part describes ironic dystopia in Gran teatro del fin del mundo; third part highlights the logic of reversed aridjian aesthetics.

  6. Universidad de Leeds - Gran Bretaña

    Directory of Open Access Journals (Sweden)

    Chamberlin, -

    1977-11-01

    ón exclusivamente peatonal, liberándola de la distorsión del tráfico rodado y proporcionándole el grado de tranquilidad y recogimiento necesarios a su función. El gran «campus» se ve aquí subdividido en distintos núcleos ajardinados de dimensión más humana, enlazados entre sí, y en torno a cada uno de los cuales se agrupa una arquitectura homogénea y al tiempo variada, que rompe con el monolitismo convencional.

  7. Vivienda unifamiliar - Londres - Gran Bretaña

    Directory of Open Access Journals (Sweden)

    Guest, John

    1978-10-01

    Full Text Available This home, designed by the architect himself as his place of residence with his wife and two children, is sited in a large garden belonging to the former home of the family, situated in an area relatively close to the center of London. The program of the dwelling, which includes: five bedrooms, bathrooms, playroom for children, living room, dining room, kitchen and music room, is resolved in two floors and a semibasement. The house is basically oriented towards the rear garden, in order to integrate the garden areas into the interior spaces, which is achieved by means of large terraces and Windows. Other characteristics of this construction are the luminosity —achieved by means of glass facades and an adequate selection of the covering materials—, the low maintenance costs and the abundance of space, which tend to counteract the negative effects of the large city ¡n which it is immersed.

    Esta vivienda, diseñada por el propio arquitecto para vivir en ella con su mujer y sus dos hijos, se encuentra emplazada en un amplio jardín perteneciente al antiguo hogar de la familia, situado en una zona relativamente próxima al centro de Londres. El programa de la vivienda, que comprende: cinco dormitorios, cuartos de baño, sala de juego para niños, salón, comedor, cocina y sala de música, está resuelto en dos plantas y un semisótano. La casa se ha orientado fundamentalmente hacia el jardín posterior, con el fin de integrar sus zonas verdes en los espacios interiores, lo que se consigue mediante amplias terrazas y ventanales. Otras características de esta construcción son la luminosidad —obtenida mediante el acristalamiento de las fachadas y una adecuada elección de los materiales de revestimiento—, los bajos costos de mantenimiento y la abundancia de espacio, que tienden a contrarrestar los efectos negativos de la gran ciudad en la que se halla inmersa.

  8. Sistemas de control de vibraciones en estructuras de gran altura

    Directory of Open Access Journals (Sweden)

    Montanaro, Maria Inés

    2002-02-01

    Full Text Available The increasing of big cities with a great population density, flows to the multiplication of light and thin towers in very high buildings, with an small natural damping. So, those buildings are exposed to the wind oscillations and to the earthquakes. Those oscillations could produce damages in the structure, affect its functionality and/or to be a cause of discomfort. In order to reduce the structural risk of excessive deformations or accelerations, we want to bring up here a solution lied with the dissipation of vibrational energy in the structural dampers. The objective of this work is to bring a c1ear and complete c1assification and description of all isolation and vibration controls known till the moment and their main application' fields. The definition of those systems is completed with graphics, characteristics and structures examples. This c1assification will allow a real interpretation of advantages and disadvantages of all isolation and vibration controls concerning structural applications.El aumento de la densidad poblacional y de las grandes urbes ha incrementado la necesidad de las torres de edificios de gran altura, las cuales tienden a ser muy livianas y delgadas, por lo tanto poseen un amortiguamiento natural muy pequeño, lo que los hace más propensos a las oscilaciones del viento y los sismos. Dichas oscilaciones pueden causar daño a la estructura, afectar su funcionalidad y/o causar incomodidad. Una solución planteada para reducir el riesgo estructural de experimentar deformaciones excesivas o aceleraciones es la disipación de energía vibracional en los amortiguadores estructurales. El objetivo de este trabajo es brindar una clasificación clara y completa de todos los sistemas de aislación y control de vibraciones existentes hasta al momento, además de una descripción de los mismos y sus principales campos de aplicación. La definición de los sistemas incluye gráficos, características y ejemplos de estructuras

  9. Advanced Physics Lab at TCU

    Science.gov (United States)

    Quarles, C. A.

    2009-04-01

    The one semester, one credit hour Modern Physics Lab is viewed as a transition between the structured Physics 1 and 2 labs and junior/senior research. The labs focus on a variety of experiments built around a multichannel analyzer, various alpha, beta and gamma ray detectors and weak radioactive sources. Experiments include radiation safety and detection with a Geiger counter and NaI detector, gamma ray spectroscopy with a germanium detector, beta spectrum, alpha energy loss, gamma ray absorption, Compton effect, nuclear and positron annihilation lifetime, speed of gamma rays. Other experiments include using the analog oscilloscope, x-ray diffraction of diamond and using an SEM/EDX. Error analysis is emphasized throughout. The semester ends with an individual project, often an extension of one of the earlier experiments, and students present their results as a paper and an APS style presentation to the department.

  10. Lab-on-fiber technology

    CERN Document Server

    Cusano, Andrea; Crescitelli, Alessio; Ricciardi, Armando

    2014-01-01

    This book focuses on a research field that is rapidly emerging as one of the most promising ones for the global optics and photonics community: the "lab-on-fiber" technology. Inspired by the well-established 'lab on-a-chip' concept, this new technology essentially envisages novel and highly functionalized devices completely integrated into a single optical fiber for both communication and sensing applications.Based on the R&D experience of some of the world's leading authorities in the fields of optics, photonics, nanotechnology, and material science, this book provides a broad and accurate de

  11. Global Reservoir and Dam Database, Version 1 (GRanDv1): Reservoirs, Revision 01

    Data.gov (United States)

    National Aeronautics and Space Administration — The Global Reservoir and Dam (GRanD) Database, Version 1.1 contains 6,862 records of reservoirs and their associated dams with a cumulative storage capacity of 6,197...

  12. Exclusive processes at Jefferson Lab

    Indian Academy of Sciences (India)

    Exclusive processes such as proton–proton elastic scattering, meson photoproduction, and deuteron photodisintegration have been pursued extensively at many laboratories over the years in the search for such a transition, particularly at Jefferson Lab in recent years, taking the advantage of the high luminosity capability of ...

  13. The Telecom Lab is moving

    CERN Multimedia

    IT Department

    2009-01-01

    As of 2nd March 2009, the Telecom Lab will move to Building 58 R-017. The Telecom Lab is the central point for all support questions regarding CERN mobile phone services (provision of SIM cards, requests for modifications of subscriptions, diagnostics for mobile phone problems, etc.). The opening hours as well as the contact details for the Telecom Lab remain unchanged: New location: Building 58 R-017 Opening hours: Every week day, from 11 a.m. to 12 a.m. Phone number: 72480 Email address: labo.telecom@cern.ch This change has no impact on support requests for mobile services. Users can still submit their requests concerning mobile phone subscriptions using the usual EDH form (https://edh.cern.ch/Document/GSM). The automatic message sent to inform users of their SIM card availability will be updated to indicate the new Telecom Lab location. You can find all information related to CERN mobile phone services at the following link: http://cern.ch/gsm CS Section - IT/CS group

  14. A Simple, Successful Capacitor Lab

    Science.gov (United States)

    Ennis, William

    2011-01-01

    Capacitors are a fundamental component of modern electronics. They appear in myriad devices and in an enormous range of sizes. Although our students are taught the function and analysis of capacitors, few have the opportunity to use them in our labs.

  15. SuperFormLab: showing SuperFormLab

    DEFF Research Database (Denmark)

    2013-01-01

    3D-printing in clay and ceramic objects shaped by your own sounds and movements! Digital form transferred via CNC-milling to ornamental ceramic wall-cladding. Brave New World… Students and their teacher at SuperFormLab, the new ceramic workshop of the School of Design at the Royal Danish Academy...... of Fine Arts in Copenhagen, will be showing results of their investigations into the potential of combining digital technologies with ceramic materials. It is now possible to shape the most complex mathematical, virtual 3D objects through the use of advanced software-programs. And more than that – you can...... now get these objects out of the computer and be able to hold and experience them with your hands. Even made in clay. At SuperFormLab, workshop for the new education in Ceramic Design at the School of Design, the integration of digital technologies in relation to the ceramic materials and techniques...

  16. An Approach for WebLabs Analysis

    Directory of Open Access Journals (Sweden)

    Javier García Zubia

    2007-05-01

    Full Text Available The Faculty of Engineering of University of Deusto has a WebLab oriented to Microelectronics available since 2001. The first part of this paper shows several requirements that a WebLab should meet and the following sections present the WebLab-Deusto.

  17. Recent results from Jefferson Lab

    International Nuclear Information System (INIS)

    Smith, E.

    2000-01-01

    Precision measurements of the structure of nucleons and nuclei in the regime of strong interaction QCD are now possible with the availability of high current polarized electron beams, polarized targets, and recoil polarimeters, in conjunction with modern spectrometers and detector instrumentation. The authors present some recent results from the Jefferson Lab on the charge and current distributions of nucleons and nuclei. They also review measurements which relate physics at small distances to the regime where strong interaction QCD is the relevant theory

  18. Designing inquiry learning spaces for online labs in the Go-Lab platform

    NARCIS (Netherlands)

    de Jong, Ton; Gillet, Dennis; Sotiriou, Sofoklis; Agogi, Ellinogermaniki; Zacharia, Zacharias

    2015-01-01

    The Go-Lab project (http://www.go-lab-project.eu/) aims to enable the integration of online labs through inquiry-based learning approaches into science classrooms. Through the use of an advanced plug and play technological solution the Go-Lab project opens up remote science laboratories, data

  19. LabVIEW 8 student edition

    CERN Document Server

    Bishop, Robert H

    2007-01-01

    For courses in Measurement and Instrumentation, Electrical Engineering lab, and Physics and Chemistry lab. This revised printing has been updated to include new LabVIEW 8.2 Student Edition. National Instruments' LabVIEW is the defacto industry standard for test, measurement, and automation software solutions. With the Student Edition of LabVIEW, students can design graphical programming solutions to their classroom problems and laboratory experiments with software that delivers the graphical programming capabilites of the LabVIEW professional version. . The Student Edition is also compatible with all National Instruments data acquisition and instrument control hardware. Note: The LabVIEW Student Edition is available to students, faculty, and staff for personal educational use only. It is not intended for research, institutional, or commercial use. For more information about these licensing options, please visit the National Instruments website at (http:www.ni.com/academic/)

  20. Ribeiro's typology, genomes, and Spanish colonialism, as viewed from Gran Canaria and Colombia

    Directory of Open Access Journals (Sweden)

    Maria Cátira Bortolini

    2004-01-01

    Full Text Available Four biallelic and six multiallelic Y-chromosome polymorphisms were investigated in 59 Gran Canarian, 60 North African Berber and 46 Spanish subjects. These new data were merged with equivalent literature information to obtain the parental Y-chrosomomal contribution in Gran Canarians, Colombians, and Venezuelans. The results were then compared, for Gran Canarians and Colombians, to those derived from autosomal and mtDNA. In both groups, the Spanish Y-chromosome contribution was much more marked than that estimated using mtDNA. This analysis showed a usual trend in the Spanish Colonial history, characterized by a demographic collapse of the aboriginal population, but with considerable introgression of genes through native women. In accordance to D. Ribeiro's typology for peoples subjected to Colonialism, the Y-chromosomes of these admixed populations are classified as transplanted, their mtDNA as witness, and their autosome sets as new.

  1. Seroprevalence of Coxiella burnetii in domestic ruminants in Gran Canaria Island, Spain.

    Science.gov (United States)

    Rodríguez, N F; Carranza, C; Bolaños, M; Pérez-Arellano, J L; Gutierrez, C

    2010-04-01

    Coxiella burnetii is the causative agent of Q fever, a zoonosis with worldwide occurrence. In the Canary Islands, the overall seroprevalence in humans has been estimated to be 21.5%. Gran Canaria island concentrates the highest ruminant population in the archipelago and the prevalence of the human infection is 23.5%. To evaluate the seroprevalence in livestock and the affected areas in Gran Canaria island, a total of 1249 ruminants were randomly selected for this study (733 goats, 369 sheep and 147 cattle). The samples were evaluated using an indirect ELISA Kit. The results showed seroprevalences of 60.4%, 31.7% and 12.2% in goats, sheep and cattle, respectively. Based on these results, Q fever could be considered as endemic in Gran Canaria island. Sanitary measures should be taken at the farm level to minimize the risk of exposure of C. burnetii to humans.

  2. New xenophytes from Gran Canaria (Canary Islands, Spain, with emphasis on naturalized and (potentially invasive species

    Directory of Open Access Journals (Sweden)

    Verloove, F.

    2013-12-01

    Full Text Available Trabajos recientes de campo en Gran Canaria han facilitado el descubrimiento de nuevas localidades para plantas vasculares no nativas. Agave attenuata, Antigonon leptopus, Atriplex nummularia, Cascabela thevetia, Cenchrus echinatus, Cuscuta campestris, Diplachne fusca subsp. uninervia, Diplotaxis tenuifolia, Dysphania anthelmintica (hasta ahora confundida con D. ambrosioides, Eclipta prostrata, Euphorbia pulcherrima, Fagopyrum esculentum, Gossypium barbadense, Lablab purpureus, Lemna minuta, Opuntia leucotricha, Passiflora edulis, Pennisetum glaucum, Phaseolus acutifolius, Pluchea carolinensis, Prosopis juliflora, Salvia microphylla, Schinus terebinthifolius, Senna spectabilis, Solanum chrysotrichum, Tecoma stans, Tipuana tipu, Urochloa mutica, U. plantaginea y Washingtonia se citan por primera vez para las Islas Canarias, mientras que Alopecurus myosuroides, Amaranthus blitoides, Bothriochloa ischaemum var. songarica, Cardamine flexuosa subsp. debilis, Heliotropium curassavicum, Leonotis nepetifolia, Medicago lupulina, Parkinsonia aculeata, Physalis peruviana, Phytolacca americana y Turnera ulmifolia son nuevas para la flora de la isla de Gran Canaria. Finalmente, se confirma la presencia de Paspalum vaginatum, P. distichum y Cortaderia selloana en Gran Canaria.Trabajos recientes de campo en Gran Canaria han facilitado el descubrimiento de nuevas localidades para plantas vasculares no nativas. Agave attenuata, Antigonon leptopus, Atriplex nummularia, Cascabela thevetia, Cenchrus echinatus, Cuscuta campestris, Diplachne fusca subsp. uninervia, Diplotaxis tenuifolia, Dysphania anthelmintica (hasta ahora confundida con D. ambrosioides, Eclipta prostrata, Euphorbia pulcherrima, Fagopyrum esculentum, Gossypium barbadense, Lablab purpureus, Lemna minuta, Opuntia leucotricha, Passiflora edulis, Pennisetum glaucum, Phaseolus acutifolius, Pluchea carolinensis, Prosopis juliflora, Salvia microphylla, Schinus terebinthifolius, Senna spectabilis, Solanum

  3. Colección El Gran Nayar del Ini y el Cemca

    OpenAIRE

    2013-01-01

    Fotografías del Nayar y de California 1893-1900, de Léon Diguet (1991) Por tierras occidentales. Entre sierras y barrancas, de Léon Diguet (1992) Bibliografía del Gran Nayar : antropología, arqueología, historia, Jesús Jáuregui, editor (1992) Ensayos sobre El Gran Nayar: entre coras, huicholes y tepehuanos, de Philip Weigand (1992) [en este volumen fue también institución coeditora El Colegio de Michoacán] Visita de las misiones del Nayarit, de José Antonio Bugarín (1993) Los huicholes en la ...

  4. Gran minería y conflictos socioambientales : el caso del distrito de Espinar, Cusco

    OpenAIRE

    Huamaní Paccaya, Wilber

    2015-01-01

    Universidad Nacional Agraria La Molina. Escuela de Posgrado. Maestría en Ecología Aplicada Uno de los problemas que enfrenta Espinar es la presencia de conflictos relacionados con la actividad expansiva de la gran minería. El objetivo de este estudio fue conocer y determinar las causas-implicancias y las relaciones de los conflictos socio-ambientales de la gran minería en Espinar (1980- 2013). Para ello, primero se recopiló información sobre la historia de la minería, se identificó y se ca...

  5. Distribution and importance of the family anacardiaceae timber in The Gran Chaco of Argentina

    Directory of Open Access Journals (Sweden)

    Claudia Verónica Luna

    2012-09-01

    Full Text Available The Gran Chaco is the second green support continent presents an alarming loss of biodiversity, on the other hand, the short-termconservation of such valuable species as are the representatives of the family Anacardiaceae, are uncertain, in spite be invaluable participation in native forest ecosystems, lack of resource management for years has put at risk many species, moving to integrate the IUCN Red List (International Union for Conservation of Nature. This work, through an extensive literature review, aims to reassess the use and importance of the Anacardiaceae family components that are widely distributed in the Gran Chaco Argentino.

  6. Establecimiento de un procedimiento para obtener previsiones de ventas en una empresa de gran consumo

    OpenAIRE

    Cortés, Marc

    2005-01-01

    El proyecto se titula “Establecimiento de un procedimiento para obtener previsiones de ventas en una empresa de gran consumo” y pretende analizar la evolución de los procedimientos logísticos en empresas de gran consumo, centrándose en el estudio del proceso de planificación de la demanda. A tal efecto, se divide en cuatro bloques principales: Descripción y caracterización de la empresa Font Vella, S.A. y el sector al cual pertenece, tendencias del mercado de agua embotellad...

  7. Remote Lab for Robotics Applications

    Directory of Open Access Journals (Sweden)

    Robinson Jiménez

    2018-01-01

    Full Text Available This article describes the development of a remote lab environment used to test and training sessions for robotics tasks. This environment is made up of the components and devices based on two robotic arms, a network link, Arduino card and Arduino shield for Ethernet, as well as an IP camera. The remote laboratory is implemented to perform remote control of the robotic arms with visual feedback by camera, of the robots actions, where, with a group of test users, it was possible to obtain performance ranges in tasks of telecontrol of up to 92%.

  8. Laser safety in the lab

    CERN Document Server

    Barat, Ken L

    2012-01-01

    There is no more challenging setting for laser use than a research environment. In almost every other setting the laser controls count on engineering controls, and human exposure is kept to a minimum. In research, however, the user often manipulates the optical layout and thereby places him or herself in peril, but this does not mean that accidents and injury are unavoidable. On the contrary, laser accidents can be avoided by following a number of simple approaches. [i]Laser Safety in the Lab[/i] provides the laser user and laser safety officer with practical guidelines from housekeeping to ey

  9. Digital media labs in libraries

    CERN Document Server

    Goodman, Amanda L

    2014-01-01

    Families share stories with each other and veterans reconnect with their comrades, while teens edit music videos and then upload them to the web: all this and more can happen in the digital media lab (DML), a gathering of equipment with which people create digital content or convert content that is in analog formats. Enabling community members to create digital content was identified by The Edge Initiative, a national coalition of leading library and local government organizations, as a library technology benchmark. Surveying academic and public libraries in a variety of settings and sharing a

  10. Recent results from Jefferson Lab

    International Nuclear Information System (INIS)

    Volker D. Burkert

    1999-01-01

    Recent results on studies of the structure of nucleons and nuclei in the regime of strong interaction QCD are discussed. Use of high current polarized electron beams, polarized targets, and recoil polarimeters, in conjunction with modern spectrometers and detector instrumentation allow much more detailed studies of nucleon and nuclear structure than has been possible in the past. The CEBAF accelerator at Jefferson Lab was build to study the internal structure of hadrons in a regime where confinement is important and strong interaction QCD is the relevant theory. They author discusses how the first experiments already make significant contributions towards an improved understanding of hadronic structure

  11. Recent Results from Jefferson Lab

    International Nuclear Information System (INIS)

    Volker Burkert

    2000-03-01

    Recent results on studies of the structure of nucleons and nuclei in the regime of strong interaction QCD are discussed. Use of high current polarized electron beams, polarized targets, and recoil polarimeters, in conjunction with modern spectrometers and detector instrumentation allow much more detailed studies of nucleon and nuclear structure than has been possible in the past. The CEBAF accelerator at Jefferson Lab was built to study the internal structure of hadrons in a regime where confinement is important and strong interaction QCD is the relevant theory. I discuss how the first experiments already make significant contributions towards an improved understanding of hadronic structure

  12. A green chemistry lab course

    International Nuclear Information System (INIS)

    Rank, J.; Lenoir, D.; Bahadir, M.; Koning, B.

    2006-01-01

    The traditional course content of chemistry classes must change to achieve better awareness of the important issues of sustainability in chemistry within the next generation of professional chemists. To provide the necessary material for the organic chemistry teaching lab course, which is part of almost all study programs in chemistry, material was developed and collected (http://www.oc-praktikum.de/en) that allows students and teachers to assess reactions beyond the experimental set up, reaction mechanism and chemical yield. Additional parameters like atom economy of chemical transformations, energy efficiency, and questions of waste, renewable feed stocks, toxicity and ecotoxicity, as well as the safety measures for the chemicals used are discussed. (author)

  13. Jefferson Lab, a status report

    International Nuclear Information System (INIS)

    Thomas Jefferson National Accelerator Facility (Jefferson Lab; formerly known as CEBAF), operates a 4 GeV, 200 microA continuous wave (CW) electron accelerator that re-circulates the beam five times through two superconducting 400 MeV linacs. Electrons can be extracted from any of the five recirculation passes and beam can be simultaneously delivered to the three experimental halls. As the commissioning stage nears completion, the accelerator is becoming a fully operational machine. Experiments in Hall C have been underway since November 1995 with beam powers of over 300 kW at various energies. Hall A has received beam for spectrometer commissioning, while Hall B is expected to receive its first beam in the fall of 1996. Accelerator availability of greater than 70% during physics runs and excellent beam quality have contributed to making Jefferson Lab a world class laboratory for accelerator-based electromagnetic nuclear physics. With the high performance of the superconducting RF cavities, machine upgrades to 6 GeV, and eventually 8 to 10 GeV are now in the planning stages. Operational and commissioning details concerning all aspects of the machine will be discussed

  14. Jefferson Lab, a status report

    International Nuclear Information System (INIS)

    Dunham, B.M.

    1996-01-01

    Thomas Jefferson National Accelerator Facility (Jefferson Lab; formerly known as CEBAF), operates a 4 GeV, 200 μA continuous wave (CW) electron accelerator that re-circulates the beam five times through two superconducting 400 MeV linacs. Electrons can be extracted from any of the five recirculation passes and beam can be simultaneously delivered to the three experimental halls. As the commissioning stage nears completion, the accelerator is becoming a fully operational machine. Experiments in Hall C have been underway since November 1995 with beam powers of over 300 kW at various energies. Hall A has received beam for spectrometer commissioning, while Hall B is expected to receive its first beam in the fall of 1996. Accelerator availability of greater than 70% during physics runs and excellent beam quality have contributed to making Jefferson Lab a world class laboratory for accelerator-based electromagnetic nuclear physics. With the high performance of the superconducting RF cavities, machine upgrades to 6 GeV, and eventually 8 to 10 GeV are now in the planning stages. Operational and commissioning details concerning all aspects of the machine will be discussed. (author)

  15. Jefferson Lab, a status report

    International Nuclear Information System (INIS)

    Dunham, B.M.

    1996-01-01

    Thomas Jefferson National Accelerator Facility (Jefferson Lab; formerly known as CEBAF), operates a 4 GeV, 200 microA continuous wave (CW) electron accelerator that re-circulates the beam five times through two superconducting 400 MeV linacs. Electrons can be extracted from any of the five recirculation passes and beam can be simultaneously delivered to the three experimental halls. As the commissioning stage nears completion, the accelerator is becoming a fully operational machine. Experiments in Hall C have been underway since November 1995 with beam powers of over 300 kW at various energies. Hall A has received beam for spectrometer commissioning, while Hall B is expected to receive its first beam in the fall of 1996. Accelerator availability of greater than 70% during physics runs and excellent beam quality have contributed to making Jefferson Lab a world class laboratory for accelerator-based electromagnetic nuclear physics. With the high performance of the superconducting RF cavities, machine upgrades to 6 GeV, and eventually 8 to 10 GeV are now in the planning stages. Operational and commissioning details concerning all aspects of the machine will be discussed

  16. El oficio de los neveros en Gran Canaria en el siglo XVIII

    Directory of Open Access Journals (Sweden)

    Salvador Miranda Calderin

    2013-11-01

    Full Text Available A finales del s. XVII el Cabildo Catedral de Canarias, con sede en la capital de Gran Canaria, construyó en la cumbre de la Isla dos pozos de nieve. Allí la recogían y conservaban hasta que era transportada en verano a la ciudad. Las libras de nieve se vendieron en la «nevería» ubicada en la trasera de la Catedral desde 1694 hasta 1866. En este artículo estudiamos el oficio de nevero en Gran Canaria, que había sido olvidado por completo, sus salarios, alimentación y especialidades en el s. XVIII.At the end of XVIIIth century the Canary Cathedral Chapter, settled in Gran Canaria Island capital, built, up in the mountains, two snow wells. Workers collected the snow and filled the wells until it was transported, in summer time, from the top of the island (1.949 meters to the city. Snow pounds were sold in the back of the Cathedral from 1694 to 1866. In this article we study the «neveros» job (snow workers in Gran Canaria, that it had been completely forgotten nowdays, their salaries, food and specialities in XVIIIth century.

  17. New xenophytes from Gran Canaria (Canary Islands, Spain), with emphasis on naturalized and (potentially) invasive species

    OpenAIRE

    Verloove, F.

    2013-01-01

    Trabajos recientes de campo en Gran Canaria han facilitado el descubrimiento de nuevas localidades para plantas vasculares no nativas. Agave attenuata, Antigonon leptopus, Atriplex nummularia, Cascabela thevetia, Cenchrus echinatus, Cuscuta campestris, Diplachne fusca subsp. uninervia, Diplotaxis tenuifolia, Dysphania anthelmintica (hasta ahora confundida con D. ambrosioides), Eclipta prostrata, Euphorbia pulcherrima, Fagopyrum esculentum, Gossypium barbadense, Lablab purpureus, Lemna minuta,...

  18. Reconstructing Holocene vegetation on the island of Gran Canaria before and after human colonization

    DEFF Research Database (Denmark)

    de Nascimento, Lea; Nogué, Sandra; Criado, Constantino

    2016-01-01

    We provide the first fossil pollen and charcoal analysis from the island of Gran Canaria (Canary Islands). The pollen record obtained from Laguna de Valleseco (870 m a.s.l.) spans the late Holocene (c. 4500–1500 cal. yr BP) and thereby captures the impact of human colonization. During the earliest...

  19. Interfaces cerebro-máquina, un gran paso hacia la Inteligencia Artificial

    Directory of Open Access Journals (Sweden)

    Jesús Cortés

    2009-03-01

    Full Text Available Dentro de la Neurociencia Computacional, la Neuro-ingeniería desarrolla sistemas de comunicación entre una máquina y alguna parte del sistema nervioso. Sin lugar a dudas, estos sistemas constituyen un gran reto científico, ingenieril y ético. Sin embargo, su correcto funcionamiento todavía plantea muchos problemas.

  20. Interfaces cerebro-máquina, un gran paso hacia la Inteligencia Artificial

    OpenAIRE

    Jesús Cortés

    2009-01-01

    Dentro de la Neurociencia Computacional, la Neuro-ingeniería desarrolla sistemas de comunicación entre una máquina y alguna parte del sistema nervioso. Sin lugar a dudas, estos sistemas constituyen un gran reto científico, ingenieril y ético. Sin embargo, su correcto funcionamiento todavía plantea muchos problemas.

  1. MatLab Script and Functional Programming

    Science.gov (United States)

    Shaykhian, Gholam Ali

    2007-01-01

    MatLab Script and Functional Programming: MatLab is one of the most widely used very high level programming languages for scientific and engineering computations. It is very user-friendly and needs practically no formal programming knowledge. Presented here are MatLab programming aspects and not just the MatLab commands for scientists and engineers who do not have formal programming training and also have no significant time to spare for learning programming to solve their real world problems. Specifically provided are programs for visualization. The MatLab seminar covers the functional and script programming aspect of MatLab language. Specific expectations are: a) Recognize MatLab commands, script and function. b) Create, and run a MatLab function. c) Read, recognize, and describe MatLab syntax. d) Recognize decisions, loops and matrix operators. e) Evaluate scope among multiple files, and multiple functions within a file. f) Declare, define and use scalar variables, vectors and matrices.

  2. La Gran Colombia de la Gran Bretaña: la importancia del lugar en la producción de imágenes nacionales, 1819 - 1830

    Directory of Open Access Journals (Sweden)

    Lina del Castillo

    2010-01-01

    Full Text Available Este ensayo examina el caso de las imágenes producidas sobre la Gran Colombia (1819-1830 en Londres como parte de los esfuerzos por ganar reconocimiento para la nueva república en el exterior. Demuestra cómo los deseos territoriales y políticos de los líderes pro-independentistas (que a su vez no estuvieron de acuerdo en cuanto a qué forma debería tener la república en la práctica fueron además restringidos por los intereses imperiales de la Gran Bretaña. Por lo tanto, la geopolítica y los intereses diplomáticos jugaron un papel primordial a la hora de determinar la manera como se representó la extensión de la Gran Colombia durante este periodo en Londres. El considerar los materiales visuales y geográficos producidos dentro de este complejo contexto transnacional nos ayudará a entender aspectos poco examinados por los estudiosos de la historia de la ciencia y de la cultura visual sobre América a principios del siglo XIX. Al resaltar cuán complejas y provisionales fueron aquellas imágenes, el ensayo esclarece las negociaciones domésticas e internacionales que se dieron en torno a lo que debería significar una República de Colombia. Menos importante fue el codificar la república cartográficamente como un país Independiente, de y para ciudadanos, que el crear un territorio civilizado, unificado políticamente, y rico en recursos minerales de cara a los poderes imperiales internacionales que, durante este periodo, estaban en pleno proceso de reconfiguración de sus ámbitos de influencia y dominio.

  3. Spatial Tourist and Functional Diversity on the Volcanic Island of Gran Canaria

    Science.gov (United States)

    Gonda-Soroczyńska, Eleonora; Olczyk, Hanna

    2017-10-01

    The conducted research is focused on spatial, functional and landscape diversity, the existing tourist potential and the possibilities for further development of a small, volcanic island of Gran Canaria. The discussed island was compared against other islands of the Canarian archipelago (Lanzarote, Fuerteventura, Tenerife, La Palma, El Hierro). Similarly to the remaining Canary Islands, the economy of Gran Canaria is predominantly based on tourism (approx. 4,5-5,0 million tourists visit the Canary Island annually and approx. 2,8 million come to Gran Canaria). Additionally, Puerto de la Luz transhipment centre in Las Palmas plays a very important role because of the goods imported from overseas. It is one of the largest ports in Spain (it reloads almost 2 million containers per year) also being an important Atlantic refuelling station. Apart from tourism, an important role is played here by agriculture, primarily the cultivation of bananas and tomatoes, which represent the most significant export good of the archipelago. The conducted spatial research showed an extensive diversity. This situation is, to a great extent, influenced by the climate. The northern part is cooler and dominated by agriculture, whereas the southern one is much warmer and characterized by a well-developed tourism infrastructure. Site inspections performed out along the outer contour of the island resembling a circle. Numerous architectural and urban sketches, urban analyses and photographic documentation were made. Community surveys were carried out. For a researcher, it was extremely interesting to answer the questions whether Gran Canaria is different from the other Canary Islands, especially in the functional and landscape context, and if so what exactly these differences consist of. What is Gran Canaria in particular characterized by and what kind of role it plays in the economic sector of Spain?

  4. Famed lab seeks big grid

    CERN Document Server

    Lillington, K

    2001-01-01

    DUBLIN, Ireland -- CERN, the famed Swiss high-energy particle physics lab, has a problem. It's about to start generating more data than any computer or network anywhere in the world is able to analyze. That prospect has led CERN to drive a major European project to create a vast "grid" research network of computers across Europe. When completed, the 10 million euro, Linux-based endeavor called DataGRID, will become a principal European computing resource for researchers of many disciplines. "I believe grid computing will revolutionize the way we compute, in much the same way as the World Wide Web and Internet changed the way we communicate," said John Ellis, a theoretical physicist and adviser to the director general of CERN.

  5. Innovations in STEM education: the Go-Lab federation of online labs

    NARCIS (Netherlands)

    de Jong, Anthonius J.M.; Sotiriou, Sofoklis; Gillet, Dennis

    2014-01-01

    The Go-Lab federation of online labs opens up virtual laboratories (simulation), remote laboratories (real equipment accessible at distance) and data sets from physical laboratory experiments (together called “online labs”) for large-scale use in education. In this way, Go-Lab enables inquiry-based

  6. Innovation - A view from the Lab

    Science.gov (United States)

    The USDA Ag Lab in Peoria helps bridge the gap between agricultural producers and commercial manufacturers. In 2015, the Ag Lab, officially known as the Agricultural Research Service (ARS) National Center for Agricultural Utilization Research (NCAUR), is celebrating 75 years of research in Peoria. T...

  7. Latest results from FROST at Jefferson Lab

    Directory of Open Access Journals (Sweden)

    Ritchie B.G.

    2014-06-01

    Full Text Available The spectrum of broad and overlapping nucleon excitations can be greatly clarified by use of a polarized photon beam incident on a polarized target in meson photoproduction experiments. At Jefferson Lab, a program of such measurements has made use of the Jefferson Lab FROzen Spin Target (FROST. An overview of preliminary results are presented.

  8. Latest results from FROST at Jefferson Lab

    Energy Technology Data Exchange (ETDEWEB)

    Ritchie, Barry G. [Arizona State University

    2014-06-01

    The spectrum of broad and overlapping nucleon excitations can be greatly clarified by use of a polarized photon beam incident on a polarized target in meson photoproduction experiments. At Jefferson Lab, a program of such measurements has made use of the Jefferson Lab FROzen Spin Target (FROST). An overview of preliminary results are presented.

  9. Programming Arduino with LabVIEW

    CERN Document Server

    Schwartz, Marco

    2015-01-01

    If you already have some experience with LabVIEW and want to apply your skills to control physical objects and make measurements using the Arduino sensor, this book is for you. Prior knowledge of Arduino and LabVIEW is essential to fully understand the projects detailed in this book.

  10. Supercharging Lessons with a Virtual Lab

    Science.gov (United States)

    Stewart, Jefferson; Vincent, Daniel

    2013-01-01

    The authors describes their experiences incorporating the virtual lab into a simple circuit lesson during an energy unit in a sixth-grade class. The lesson included a hands-on group experiment using wire, batteries, and light bulbs to make a circuit and an online simulation, using a virtual lab. Class discussions, student inquiries, and the study…

  11. Gran Canaria temporary broadband seismic network: an study of the seismicity and Earth structure

    Science.gov (United States)

    Almendros, Javier; de Lis Mancilla, Flor; Martinez-Arevalo, Carmen; Carmona, Enrique; Sanchez, Nieves; Heit, Benjamin; Garcia, Alicia; Martin-Leon, Rosa; Buontempo, Luisa; Yuan, Xiahoui

    2010-05-01

    The present project is a joint effort between different institutions to deploy a dense seismic network at Gran Canaria island (Canary Islands, Spain). The interstation distance is around 20 km. The broadband seismic network is composed of one permanent (Guralp CMG-3T 120 s) and five temporary stations (Guralp CMG-3ESP 60 s). The permanent station is a 120 s Guralp CMG-3T and belongs to the Canary Island Seismic Network, run by the Instituto Geográfico Nacional (IGN) of Spain. The temporary stations are 60 s Guralp CMG-3ESP, provided by the GFZ seismic pool. The deployment was carried out in December 2009. The stations will be recording during two years. The improvement of the seismic network allow us to tackle the following issues: the detection and analysis of any local seismicity of tectonic and/or volcanic origin at Gran Canaria island; to contribute to the understanding of the regional seismicity with special interest in the oceanic channel between Tenerife and Gran Canaria Island in collaboration with a project running a dense temporary seismic network in Tenerife; to study the crustal and upper mantle structure, under Gran Canaria to constrain the crustal structure, the source of the volcanism, and better sample the mantle discontinuities and anisotropy. To study the Earth structure, we use receiver function analysis, ambient seismic noise and SKS anisotropy techniques, This project is part of a long-term research of the crustal and the mantle structure of the Canary Islands, which has started with Gran Canaria and Tenerife Islands and will eventually continue with the rest of the archipelago. The origin of the Canary Islands is generally attributed to a broad mantle upwelling under a slow moving plate, resulting in spatially and temporally distributed volcanic activity and a large number of seamounts and islands. A controversial discussion has been going on about the factors that control the evolution of the volcanic edifices, the type of the melting

  12. Exploring linear algebra labs and projects with Mathematica

    CERN Document Server

    Arangala, Crista

    2014-01-01

    Matrix Operations Lab 0: An Introduction to Mathematica Lab 1: Matrix Basics and Operations Lab 2: A Matrix Representation of Linear Systems Lab 3: Powers, Inverses, and Special Matrices Lab 4: Graph Theory and Adjacency Matrices Lab 5: Permutations and Determinants Lab 6: 4 x 4 Determinants and Beyond Project Set 1 Invertibility Lab 7: Singular or Nonsingular? Why Singularity Matters Lab 8: Mod It Out, Matrices with Entries in ZpLab 9: It's a Complex World Lab 10: Declaring Independence: Is It Linear? Project Set 2 Vector Spaces Lab 11: Vector Spaces and SubspacesLab 12: Basing It All on Just a Few Vectors Lab 13: Linear Transformations Lab 14: Eigenvalues and Eigenspaces Lab 15: Markov Chains, An Application of Eigenvalues Project Set 3 Orthogonality Lab 16: Inner Product Spaces Lab 17: The Geometry of Vector and Inner Product SpacesLab 18: Orthogonal Matrices, QR Decomposition, and Least Squares Regression Lab 19: Symmetric Matrices and Quadratic Forms Project Set 4 Matrix Decomposition with Applications L...

  13. The distance from CERN to LNGS

    CERN Document Server

    Jones, M; Crespi, M; Colosimo, G; Mazzoni, A; Durand, S

    2012-01-01

    The calculation of the distance from CERN to Gran Sasso involves the combination of three independent sets of measurements: the calculation of the distance between pillars included in the geodetic reference network at CERN and the Lab Nationale Gran Sasso (LNGS); and the transfer on each site of coordinates, from the geodetic surface network, underground into the tunnel or experiment hall installations. The transfer of coordinates, from the surface, underground at the two sites was not done as part of the CNGS Project. Initial survey concerns for the project were directed towards the orientation of the beamline from CERN to LNGS to within ~100 m. Gyro-theodolite measurements underground were planned at CERN so a transfer would effectively only translate the target point. Given the precision estimated for previous transfers, it was decided not to undertake expensive and time-consuming measurements campaigns for a negligible gain in accuracy. Therefore only GPS measurements at the two sites were carried out. Th...

  14. Gran Torino's Hmong Lead Bee Vang on Film, Race, and Masculinity: Conversations with Louisa Schein

    Directory of Open Access Journals (Sweden)

    Louisa Schein

    2010-01-01

    Full Text Available Bee Vang, of Minneapolis, played the Hmong lead Thao Vang Lor in Clint Eastwood's 2008 Gran Torino. He was sixteen when he shot the film and had no acting training. For 27 days on location in urban Detroit he played before a Hollywood crew opposite an icon of the filmindustry doing multiple takes of each scene and camera angle. The shoot was full of unexpected twists and turns some of which he recounts in these interchanges with Hmong media expert Louisa Schein of the Departments of Anthropology and Women's and Gender Studies at Rutgers University. Over several conversations, condensed here, Vang and Schein talk about Gran Torino, about acting and film critique, about immigrants and stereotypes, about masculinity and sexuality, and about Vang's vision for what needs to change to address problems of race and inequality in and beyond media worlds.

  15. Lab-on-a-Chip

    Science.gov (United States)

    2004-01-01

    Labs on chips are manufactured in many shapes and sizes and can be used for numerous applications, from medical tests to water quality monitoring to detecting the signatures of life on other planets. The eight holes on this chip are actually ports that can be filled with fluids or chemicals. Tiny valves control the chemical processes by mixing fluids that move in the tiny channels that look like lines, connecting the ports. Scientists at NASA's Marshall Space Flight Center (MSFC) in Huntsville, Alabama designed this chip to grow biological crystals on the International Space Station. Through this research, they discovered that this technology is ideally suited for solving the challenges of the Vision for Space Exploration. For example, thousands of chips the size of dimes could be loaded on a Martian rover looking for biosignatures of past or present life. Other types of chips could be placed in handheld devices used to monitor microbes in water or to quickly conduct medical tests on astronauts. (NASA/MSFC/D.Stoffer)

  16. Chronology of the cave interior sediments at Gran Dolina archaeological site, Atapuerca (Spain)

    Science.gov (United States)

    Parés, J. M.; Álvarez, C.; Sier, M.; Moreno, D.; Duval, M.; Woodhead, J. D.; Ortega, A. I.; Campaña, I.; Rosell, J.; Bermúdez de Castro, J. M.; Carbonell, E.

    2018-04-01

    The so-called "Gran Dolina site" (Atapuerca mountain range, N Spain) is a karstic cavity filled by sediments during the Pleistocene, some of which contain a rich ensemble of archaeological and paleontological records. These sediments have contributed significantly to our understanding of early human dispersal in Europe but, in contrast, older, interior facies deposits have received much less of attention. The stratigraphy of Gran Dolina reveals an abrupt sedimentary change of interior to entrance facies from bottom to top, reflecting a significant paleoenvironmental change that promoted the accumulation of sediments transported from the vicinity of the cave by water or "en masse". Since the major magnetic polarity reversal known as the Matuyama-Brunhes boundary (0.78 Ma) was detected within the TD7 unit in the middle of the stratigraphic section, we carried out a new combined paleomagnetic, radiometric (U-Pb), and electron spin resonance (ESR) dating study of the lower part of the sequence in order to constrain the chronology of the interior facies at Gran Dolina. U-Pb analysis of speleothems did not produce age information as the samples proved to be extremely unradiogenic. The magnetic stratigraphy of the cave interior sediments reveals a dominant reverse magnetic polarity, coherent with a Matuyama age, and interrupted by a normal polarity magnetozone interpreted as the Jaramillo Subchron (1.0-1.1 Ma). ESR ages on quartz grains from the upper part of the interior facies sediments are coherent with such an interpretation. We conclude that the fluvial deposits (interior facies) that constitute the cave floor began accumulating before 1.2 Ma. The development of large cave entrances at Gran Dolina occurred shortly after the Jaramillo Subchron but before ca 900 ka ago.

  17. Distribución en gran escala de los cúmulos globulares en Fornax

    Science.gov (United States)

    Ostrov, P. G.

    Para analizar los cúmulos globulares azules y rojos de NGC 1399 asociados con NGC 1399 en particular, o si los cúmulos azules representaban un sistema asociado con el cúmulo de Fornax en general, se obtuvieron imágenes CCD de gran formato con el telescopio de 4m del CTIO, en las bandas C y T1. Se describe el método empleado y lo encontrado.

  18. Gran Bretaña ante Europa. Tormenta en el Canal. El continente aislado

    Directory of Open Access Journals (Sweden)

    Elizalde, María Dolores

    2001-09-01

    Full Text Available Not available

    El presente artículo estudia el difícil camino de Gran Bretaña hacia la integración en la Comunidad Europea. El trabajo se inicia con un análisis de los factores que determinaron la posición británica ante Europa; explica luego el modelo de Europa deseado por los británicos; y se detiene especialmente en las distintas actitudes adoptadas por Gran Bretaña durante el proceso de integración europea, centrándose en tres ámbitos: la política, la economía y la defensa. En ese marco, el trabajo revisa las razones por las que Gran Bretaña apoyó o rechazó las distintas instituciones europeas que se fueron creando, los motivos de su alejamiento del núcleo inicial de la CEE, y las causas de su posterior incorporación a la estructura comunitaria.

  19. Modernidad y posmodernidad en El gran señor de Enrique Rosas Paravicino

    Directory of Open Access Journals (Sweden)

    Miguel Arribasplata Cabanillas

    2015-07-01

    Full Text Available En la novela El Gran Señor de Enrique Rosas Paravicino hay una confluencia de pasado histórico y presente conflictivo, donde el fervor religioso cumple un papel de nucleo integrador. En la sociedad andina ficcionalizada aparece una novedosa galería de tipos sociales, como corresponde a un país, como Perú, en pugna por integrar la modernidad con la tradición cultural. Los Andes se constituyen en el gran escenario de una épica popular, con todo el colorido de sus gentes y el paisaje de su cultura. Todo se mueve en torno a un rasgo que es predominante en la novela: el desplazamiento humano en torno a una devoción en plena Cordillera Oriental: el Cristo de la Nieve Resplandeciente. Aquí el sincretismo religioso da lugar a la presencia de personajes involucrados en el mito, la magia y la tradición oral, a la par que asoman los cambios sociales y políticos impulsados por otros actores embarcados en proyectos mundanos, acordes con ese otro gran mito: el progreso colectivo, en perspectiva al desarrollo nacional.

  20. Designing Viable Business Models for Living Labs

    Directory of Open Access Journals (Sweden)

    Bernhard R. Katzy

    2012-09-01

    Full Text Available Over 300 regions have integrated the concept of living labs into their economic development strategy since 2006, when the former Finnish Prime Minister Esko Aho launched the living lab innovation policy initiative during his term of European presidency. Despite motivating initial results, however, success cases of turning research into usable new products and services remain few and uncertainty remains on what living labs actually do and contribute. This practitioner-oriented article presents a business excellence model that shows processes of idea creation and team mobilization, new product development, user involvement, and entrepreneurship through which living labs deliver high-potential investment opportunities. Customers of living labs are identified as investors such as venture capitalists or industrial firms because living labs can generate revenue from them to create their own sustainable business model. The article concludes that living labs provide extensive support “lab” infrastructure and that it remains a formidable challenge to finance it, which calls for a more intensive debate.

  1. Baseball Physics: A New Mechanics Lab

    Science.gov (United States)

    Wagoner, Kasey; Flanagan, Daniel

    2018-05-01

    The game of baseball provides an interesting laboratory for experimenting with mechanical phenomena (there are many good examples in The Physics Teacher, available on Professor Alan Nathan's website, and discussed in Physics of Baseball & Softball). We have developed a lab, for an introductory-level physics course, that investigates many of these phenomena. The lab uses inexpensive, readily available equipment such as wooden baseball bats, baseballs, and actual Major League Baseball data. By the end of the lab, students have revisited many concepts they learned earlier in the semester and come away with an understanding of how to put seemingly disparate ideas together to analyze a fun sport.

  2. Les trois vies de Lucie de Iegor Gran, ou comment sortir du quotidien

    Directory of Open Access Journals (Sweden)

    Marie-Pascale Huglo

    2007-08-01

    Full Text Available Dossier/Issue: 1 - Raconter le quotidien aujourd'hui - Les trois vies de Lucie de Iegor Gran est un roman à contrainte qui raconte trois Vies d’un couple moyen (la troisième version étant la somme des deux premières. Caractéristiques du retour au récit dans la littérature contemporaine, les Vies de Gran associent le motif du quotidien à la catégorie du romanesque, montrant en quoi le quotidien et le romanesque constituent un couple antithétique mais indissociable. Le quotidien est ici un lieu commun qui a plus à voir avec le langage courant et les catégories littéraires qu’avec une réalité insaisissable. Par là, Gran s’écarte des revendications réalistes propres à de nombreuses explorations du quotidien dans la littérature contemporaine. Dans ce contexte, la contrainte qui gouverne le roman n’est pas une simple prouesse ludique sans intérêt : elle contribue à renforcer l’intrication entre quotidien, langage, récit et procédés littéraires.Based on a formal constraint, Iegor Gran’s Les trois vies de Lucie is a novel which recounts the three Lives of an average married couple (the third version being the sum of the first two. Gran’s Lives are quite typical of the renewed interest in narrative in contemporary literature and they demonstrate how everyday life and novelistic adventures form an antithetical but inseparable pair. According to Gran, everyday life is a commonplace which has more to do with ordinary language and literary categories than with an elusive reality. Gran thus stays away from the realistic claims typical of numerous explorations of everyday life in contemporary literature. The formal constraint which governs the novel is more than just a technical exploit, ludic but deprived of any interest : it reinforces the intricate relationship between everyday life, everyday language, narrative, and literary devices.

  3. Teachers' Perspectives on Online Virtual Labs vs. Hands-On Labs in High School Science

    Science.gov (United States)

    Bohr, Teresa M.

    This study of online science teachers' opinions addressed the use of virtual labs in online courses. A growing number of schools use virtual labs that must meet mandated laboratory standards to ensure they provide learning experiences comparable to hands-on labs, which are an integral part of science curricula. The purpose of this qualitative case study was to examine teachers' perceptions of the quality and effectiveness of high school virtual labs. The theoretical foundation was constructivism, as labs provide student-centered activities for problem solving, inquiry, and exploration of phenomena. The research questions focused on experienced teachers' perceptions of the quality of virtual vs. hands-on labs. Data were collected through survey questions derived from the lab objectives of The Next Generation Science Standards . Eighteen teachers rated the degree of importance of each objective and also rated how they felt virtual labs met these objectives; these ratings were reported using descriptive statistics. Responses to open-ended questions were few and served to illustrate the numerical results. Many teachers stated that virtual labs are valuable supplements but could not completely replace hands-on experiences. Studies on the quality and effectiveness of high school virtual labs are limited despite widespread use. Comprehensive studies will ensure that online students have equal access to quality labs. School districts need to define lab requirements, and colleges need to specify the lab experience they require. This study has potential to inspire positive social change by assisting science educators, including those in the local school district, in evaluating and selecting courseware designed to promote higher order thinking skills, real-world problem solving, and development of strong inquiry skills, thereby improving science instruction for all high school students.

  4. Labs not in a lab: A case study of instructor and student perceptions of an online biology lab class

    Science.gov (United States)

    Doiron, Jessica Boyce

    Distance learning is not a new phenomenon but with the advancement in technology, the different ways of delivering an education have increased. Today, many universities and colleges offer their students the option of taking courses online instead of sitting in a classroom on campus. In general students like online classes because they allow for flexibility, the comfort of sitting at home, and the potential to save money. Even though there are advantages to taking online classes, many students and instructors still debate the effectiveness and quality of education in a distant learning environment. Many universities and colleges are receiving pressure from students to offer more and more classes online. Research argues for both the advantages and disadvantages of online classes and stresses the importance of colleges and universities weighing both sides before deciding to adopt an online class. Certain classes may not be suitable for online instruction and not all instructors are suitable to teach online classes. The literature also reveals that there is a need for more research on online biology lab classes. With the lack of information on online biology labs needed by science educators who face the increasing demand for online biology labs, this case study hopes to provide insight into the use of online biology lab classes and the how students and an instructor at a community college in Virginia perceive their online biology lab experience as well as the effectiveness of the online labs.

  5. The Design:Lab as platform in participatory design research

    DEFF Research Database (Denmark)

    Binder, Thomas; Brandt, Eva

    2008-01-01

    The notion of laboratory or simply 'lab' has become popular in recent years in areas outside science and technology development. Learning Labs, Innovation Labs, Usability Labs, Media and Communication Labs and even Art Labs designate institutions or fora dedicated to change and experimentation...... as others have frequently used other metaphors like workshop, studio or atelier in design research. In this article we will argue that the laboratory metaphor is particularly suitable and useful for the design:lab, and we will give examples of how we have worked with the design:lab as a platform...

  6. Fulltext PDF

    Indian Academy of Sciences (India)

    the electroweak gauge group, immune to the usual strong, weak and electromagnetic in- teractions. Mixing of such sterile neutrinos with the sequential ones has also .... є CERN to Gran Sasso: The Gran Sasso laboratory with its rock shielding is ideal for neutrino experiments. It is planned to have a neutrino beam to Gran.

  7. Virtual labs in Leonardo da Vinci

    Directory of Open Access Journals (Sweden)

    Stanislaw Nagy

    2006-10-01

    Full Text Available This paper discusses the problem of virtual lab capabilities in the e-learning. Using combination of web conferencing and "virtual labs" capabilities, a new quality distance learning teaching is now in preparation and will be included in the course teaching to produce interactive, online simulations for the natural gas engineering studies. The activities are designed to enhance the existing curriculum and to include online assessments. A special care is devoted to the security problem between a server and a client computer. Several examples of the virtual labs related to the PVT thermodynamics, fluid flow, the natural gas well-testing, and thev gas network flow are prepared and tested. A major challenge for the 'CELGAS' system is in managing the delicate balance between the student collaboration and the isolation. Students may be encouraged to collaborate and work with each other, simulating their exploration of the lab material.

  8. LAB building a home for scientists

    CERN Document Server

    Fishman, Mark C

    2017-01-01

    Laboratories are both monasteries and space stations, redolent of the great ideas of generations past and of technologies to propel the future. Yet standard lab design has changed only little over recent years. Here Mark Fishman describes how to build labs as homes for scientists, to accommodate not just their fancy tools, but also their personalities. This richly illustrated book explores the roles of labs through history, from the alchemists of the Middle Ages to the chemists of the 19th and 20th centuries, and to the geneticists and structural biologists of today, and then turns to the special features of the laboratories Fishman helped to design in Cambridge, Shanghai, and Basel. Anyone who works in, or plans to build a lab, will enjoy this book, which will encourage them to think about how this special environment drives or impedes their important work.

  9. Jefferson Lab physics overview: Recent results

    International Nuclear Information System (INIS)

    I review highlights of the Jefferson Lab nucleon structure program. I shall emphasize recent results from experiments exploring the spin structure of the nucleon and from dedicated experiments aimed at accessing the generalized parton distributions (GPDs).

  10. Online labs and the MARVEL experience

    Directory of Open Access Journals (Sweden)

    Dieter Mueller

    2005-06-01

    Full Text Available MARVEL is a Leonardo da Vinci project that provides a framework to analyse the pedagogic effectiveness of online labs in various heterogeneous areas that include solar energy, robotics, electronics and electro-pneumatics. It is also used as a test bench to compare the implementation of purely remote labs, where all devices are real, versus mixed-reality environments, where real devices work together with simulation models. This paper describes the basic concepts underlying the implementation of such online labs and presents two case studies (which are openly available to the public. A final section discusses the main pedagogical implications of online labs and presents the research directions that are being considered as a follow-up from this project.

  11. Cockle Temperature Exposure Lab Experiment (2016)

    Data.gov (United States)

    U.S. Environmental Protection Agency — We carried out a lab experiment in which we exposed cockles to a range of air temperatures to simulate the physiological rigors of exposure to sunlight and air at...

  12. GeoLab Sample Handling System

    Data.gov (United States)

    National Aeronautics and Space Administration — This work builds upon the successes in developing and field testing GeoLab as part of the 2010 and 2011 Habitat Demonstration Unit (HDU) and Desert RATS activities....

  13. Photonics and Fiber Optics Processor Lab

    Data.gov (United States)

    Federal Laboratory Consortium — The Photonics and Fiber Optics Processor Lab develops, tests and evaluates high speed fiber optic network components as well as network protocols. In addition, this...

  14. Airborne Low-Frequency Sonar (ALFS) Lab

    Data.gov (United States)

    Federal Laboratory Consortium — The ALFS lab is dedicated to support acoustic data analysis and processing software support to the AN/AQS-22 dipping sonar system. It includes stand-alone Software...

  15. Berkeley Lab Laser Accelerator (BELLA) facility

    Data.gov (United States)

    Federal Laboratory Consortium — The Berkeley Lab Laser Accelerator (BELLA) facility (formerly LOASIS) develops advanced accelerators and radiation sources. High gradient (1-100 GV/m) laser-plasma...

  16. European labs fight back against cuts

    CERN Multimedia

    König, R

    1997-01-01

    Germany's 1997 budget contains cuts amounting to 3.7% in funding of domestic research programs and in contributions to international labs. Contributions will be cut to the European Space Agency, the European Synchrotron facility and CERN.

  17. Generator Inspection Report: Bio - Lab, Inc.

    Science.gov (United States)

    Contains report from Georgia Department of Natural Resources of July 21, 1999 inspection of the Bio - Lab Incorporated Plant 4 in Conyers, Rockdale County, Georgia, reporting that no violations were observed.

  18. Thanatology for Everyone: Developmental Labs and Workshops

    Science.gov (United States)

    O'Connell, Walter E.; And Others

    1977-01-01

    In an effort to "treat" the growing death concerns of many medical staffs, an experiential death and dying lab was created. Its evolution to meet changing needs is discussed, as well as future potential for work in this area. (Author)

  19. PLC Support Software at Jefferson Lab

    Energy Technology Data Exchange (ETDEWEB)

    P. Chevtsov; S. Higgins; S. Schaffner; D. Seidman

    2002-10-01

    Several Automation Direct (DirectNet) Programmable Logic Controllers (PLCs) have been integrated into the accelerator control system at Jefferson Lab. The integration is based on new software that consists of three main parts: a PLC driver with a state machine control block, a device support module, and a common serial driver. The components of new software and experience gained with the use of this software for beam dump systems at Jefferson Lab are presented.

  20. German lab wins linear collider contest

    CERN Multimedia

    Cartlidge, Edwin

    2004-01-01

    Particle physicists have chosen to base the proposed International Linear Collider on superconducting technology developed by an international collaboration centred on the DESY lab in Germany. The superconducting approach was chosen by an internatinal panel ahead of a rival technology developed at Stanford in the US and the KEK lab in Japan. The eagerly-awaited decision was announced at the International Conference on High Energy Physics in Beijing today (½ page)

  1. Evaluation of oral microbiology lab curriculum reform.

    Science.gov (United States)

    Nie, Min; Gao, Zhen Y; Wu, Xin Y; Jiang, Chen X; Du, Jia H

    2015-12-07

    According to the updated concept of oral microbiology, the School of Stomatology, Wuhan University, has carried out oral microbiology teaching reforms during the last 5 years. There was no lab curriculum before 2009 except for a theory course of oral microbiology. The school has implemented an innovative curriculum with oral medicine characteristics to strengthen understanding of knowledge, cultivate students' scientific interest and develop their potential, to cultivate the comprehensive ability of students. This study was designed to evaluate the oral microbiology lab curriculum by analyzing student performance and perceptions regarding the curriculum from 2009 to 2013. The lab curriculum adopted modalities for cooperative learning. Students collected dental plaque from each other and isolated the cariogenic bacteria with selective medium plates. Then they purified the enrichment culture medium and identified the cariogenic strains by Gram stain and biochemical tests. Both quantitative and qualitative data for 5 years were analysed in this study. Part One of the current study assessed student performance in the lab from 2009 to 2013. Part Two used qualitative means to assess students' perceptions by an open questionnaire. The 271 study students' grades on oral microbiology improved during the lab curriculum: "A" grades rose from 60.5 to 81.2 %, and "C" grades fell from 28.4 to 6.3 %. All students considered the lab curriculum to be interesting and helpful. Quantitative and qualitative data converge to suggest that the lab curriculum has strengthened students' grasp of important microbiology-related theory, cultivated their scientific interest, and developed their potential and comprehensive abilities. Our student performance and perception data support the continued use of the innovative teaching system. As an extension and complement of the theory course, the oral microbiology lab curriculum appears to improve the quality of oral medicine education and help to

  2. S'Cool LAB Summer CAMP 2017

    CERN Multimedia

    Woithe, Julia

    2017-01-01

    The S’Cool LAB Summer CAMP is an opportunity for high-school students (aged 16-19) from all around the world to spend 2 weeks exploring the fascinating world of particle physics. The 24 selected participants spend their summer at S’Cool LAB, CERN’s hands-on particle physics learning laboratory, for an epic programme of lectures and tutorials, team research projects, visits of CERN’s research installations, and social activities.

  3. Technology Roadmap: Lab-on-a-Chip

    OpenAIRE

    Pattharaporn Suntharasaj; Tugrul U Daim

    2010-01-01

    With the integration of microfluidic and MEMS technologies, biochips such as the lab-on-a-chip (LOC) devices are at the brink of revolutionizing the medical disease diagnostics industries. Remarkable advancements in the biochips industry are making products resembling Star Trek.s "tricorder" and handheld medical scanners a reality. Soon, doctors can screen for cancer at the molecular level without costly and cumbersome equipments, and discuss treatment plans based on immediate lab results. Th...

  4. LabVIEW Support at CERN

    CERN Multimedia

    HR Department

    2010-01-01

    Since the beginning of 2009, due to the CERN restructuring, LabVIEW support moved from the IT to the EN department, joining the Industrial Controls and Electronics Group (ICE). LabVIEW support has been merged with the Measurement, Test and Analysis (MTA) section which, using LabVIEW, has developed most of the measurement systems to qualify the LHC magnets and components over the past 10 years. The post mortem analysis for the LHC hardware commissioning has also been fully implemented using LabVIEW, customised into a framework, called RADE, for CERN needs. The MTA section has started with a proactive approach sharing its tools and experience with the CERN LabVIEW community. Its framework (RADE) for CERN integrated application development has been made available to the users. Courses on RADE have been integrated into the standard National Instruments training program at CERN. RADE and LabVIEW support were merged together in 2010 on a single email address:labview.support@cern.ch For more information please...

  5. Cytotaxonomic investigations in some Angiosperms collected in the Valley of Aosta and in the National Park « Gran Paradiso »

    NARCIS (Netherlands)

    Gadella, Th.W.J.; Kliphuis, E.

    1970-01-01

    The chromosome number of 53 species of Angiosperms, occurring in the Valley of Aosta and in the National Park « Gran Paradise » was determined. Some notes on the taxonomy of some species are presented in this paper.

  6. Theoretical considerations and a simple method for measuring alkalinity and acidity in low-pH waters by gran titration

    Science.gov (United States)

    Barringer, J.L.; Johnsson, P.A.

    1996-01-01

    Titrations for alkalinity and acidity using the technique described by Gran (1952, Determination of the equivalence point in potentiometric titrations, Part II: The Analyst, v. 77, p. 661-671) have been employed in the analysis of low-pH natural waters. This report includes a synopsis of the theory and calculations associated with Gran's technique and presents a simple and inexpensive method for performing alkalinity and acidity determinations. However, potential sources of error introduced by the chemical character of some waters may limit the utility of Gran's technique. Therefore, the cost- and time-efficient method for performing alkalinity and acidity determinations described in this report is useful for exploring the suitability of Gran's technique in studies of water chemistry.

  7. Striking resilience of an island endemic bird to a severe perturbation: the case of the Gran Canaria blue chaffinch

    OpenAIRE

    Moreno, Á. C.; Carrascal, Luis M.; Delgado, A.; Suárez, V.; Seoane, J.

    2018-01-01

    [ES] Striking resilience of an island–endemic bird to a severe perturbation: the case of the Gran Canaria blue chaffinch. Evidence regarding population trends of endangered species in special protection areas and their recovery ability from catastrophic disturbances is scarce. We assessed the population trend of the Gran Canaria blue chaffinch (Fringilla polatzeki), a habitat specialist endemic to the pine forest of Inagua in the Canary Islands, following a devastating wildfire in July 2007. ...

  8. Human impacts quantification on the coastal landforms of Gran Canaria Island (Canary Islands)

    Science.gov (United States)

    Ferrer-Valero, Nicolás; Hernández-Calvento, Luis; Hernández-Cordero, Antonio I.

    2017-06-01

    The coastal areas of the Canary Islands are particularly sensitive to changes, both from a natural perspective and for their potential socio-economic implications. In this paper, the state of conservation of an insular coast is approached from a geomorphological point of view, considering recent changes induced by urban and tourism development. The analysis is applied to the coast of Gran Canaria, a small Atlantic island of volcanic origin, subject to a high degree of human pressure on its coastal areas, especially in recent decades. Currently, much of the economic activity of Gran Canaria is linked to mass tourism, associated with climatic and geomorphological features of the coast. This work is addressed through detailed mapping of coastal landforms across the island (256 km perimeter), corresponding to the period before the urban and tourism development (late 19th century for the island's capital, mid-20th century for the rest of the island) and today. The comparison between the coastal geomorphology before and after the urban and tourism development was established through four categories of human impacts, related to their conservation state: unaltered, altered, semi-destroyed and extinct. The results indicate that 43% of coastal landforms have been affected by human impacts, while 57% remain unaltered. The most affected are sedimentary landforms, namely coastal dunes, palaeo-dunes, beaches and wetlands. Geodiversity loss was also evaluated by applying two diversity indices. The coastal geodiversity loss by total or partial destruction of landforms is estimated at - 15.2%, according to Shannon index (H‧), while it increases to - 32.1% according to an index proposed in this paper. We conclude that the transformations of the coast of Gran Canaria induced by urban and tourism development have heavily affected the most singular coastal landforms (dunes, palaeo-dunes and wetlands), reducing significantly its geodiversity.

  9. La Restauración del Templo I “Gran Jaguar” de Tikal (Guatemala)

    OpenAIRE

    Gaspar Muñoz Cosme

    1997-01-01

    La ciudad maya de Tikal, que alcanzó su máximo explendor en los siglos VII y VIII de nuestra era, ha sido declarada por la UNESCO Patrimonio Cultural de la Humanidad en 1979 y Monumento Universal en 1986. El Templo I de Tikal, tambien conocido con el nombre de Templo del “Gran Jaguar”, constituye hoy en día el emblema de esta ciudad maya de Guatemala. Gaspar Muñoz Cosme, arquitecto, explica los interesantes trabajos de restauración de este Templo I, desarrollados entre 1992 y 1996, planteando...

  10. Factores de riesgo en la salud mental en ancianos de la isla de Gran Canaria

    OpenAIRE

    Martínez Pascual, Beatriz

    2003-01-01

    [ES] Los trastornos psicopatológicos tienen una alta prevalencia (15-25%) y se asocian a numerosas variables. Por otro lado, el envejecimiento poblacional cada vez es mayor y los ancianos constituyen una población de riesgo donde a los factores que afectan a la población adulta se les asocian otros específicos. En este trabajo se evalúa la prevalencia de ansiedad y depresión en la población mayor de 65 años de Las Palmas de Gran Canaria y su relación con variables sociodemográficas y psicosoc...

  11. Una manera de nombrar el deseo en Toda esa gran verdad

    OpenAIRE

    List Reyes, Mauricio

    2011-01-01

    Este artículo analiza la novela Toda esa gran verdad (2006) del mexicano Eduardo Montagner. El artículo centra su atención en el tema de la sexualidad, particularmente la del personaje principal. La idea es reflexionar acerca de formas disidentes de la sexualidad que rompen con las maneras normativas y que son sancionadas socialmente. En este caso en particular, unas botas de hule son el centro de la atención de un joven de una comunidad rural que dice estar enamorado del dueño de dicho calza...

  12. Emilio Duhart: Seminario del Gran Santiago -1957. Precisiones del Proyecto Urbano

    Directory of Open Access Journals (Sweden)

    Cristián Berríos Flores

    2013-12-01

    En el año 1957 se realiza en Chile el “Seminario del Gran Santiago”, donde se convoca a diversos especialistas para abordar ampliamente los problemas urbanos que se estaban suscitando en la capital. Entre los expositores se encuentra el arquitecto Emilio Duhart Harosteguy, quien realiza un detallado análisis y propuestas urbanas para Santiago. Se puede detectar a priori una directa influencia de los principios de la arquitectura moderna en su exposición, pero también una cierta autonomía intelectual al momento de proponer estructuras urbanas sobre el espacio público.

  13. The Role of Gay Spaces for a Gay Destination : Gay Tourism in Gran Canaria

    OpenAIRE

    Fimiani, Roberta

    2014-01-01

    This thesis has the aim to evaluate the role of gay spaces in Gran Canaria as a gay tourists destination with particular reference to gay exclusive resorts. The validation of the gay identity is a key motivation for homosexuals to travel, in order to connect with other homosexuals and experience the gay life that they might not be able to experience at home. Gay spaces have been defined both as liberated areas as well as ghettos, where the homosexuals are, in a way, restrained. The method cho...

  14. El Acuífero Guaraní: un gran reservorio en la mira mundial

    OpenAIRE

    Graf Rey, Marcia

    2007-01-01

    El principal problema en torno al agua se debe a que nos encontramos frente a un recurso que antes era considerado infinito y/o renovable en el caso de ser necesario y hoy esas consideraciones han cambiado. El agua es un recurso que se encuentra en el planeta en gran cantidad, pero lo cierto es que en su mayor parte no es apta para el consumo humano. La mayor parte es agua salada y el agua dulce presenta una situación crítica. Hoy día, y desde hace ya varios años, el mundo afronta la escasez ...

  15. {Proteccion del patrimonio natural vs. derecho de los animales: en Gran Canaria

    OpenAIRE

    Viera Ruiz, Gustavo

    2016-01-01

    Las cabras asilvestradas son uno de los problemas ambientales más importantes de la zona suroeste de la isla de Gran Canaria, hecho que ha sido recogido en diferentes documentos técnicos tales como los instrumentos de ordenación de los Espacios Naturales y los planes de conservación de las diferentes especies vegetales que se encuentran en peligro de extinción, tales como la jarilla de Inagua (Helianthemum inaguae), endemismo local con una única población gravemente amenazada por este impacto...

  16. Geomorphology and hydrochemistry of 12 Alpine lakes in the Gran Paradiso National Park, Italy

    Directory of Open Access Journals (Sweden)

    Aldo MARCHETTO

    2010-08-01

    Full Text Available Twelve Alpine lakes located in the Gran Paradiso National Park, in the western Italian Alps, were sampled during the ice free period in 2008 and analysed for the main morphological, chemical and physical variables in relation to the characteristics of their watershed, with the aim to create a reference database for present and future ecological studies and to support conservation politics with scientific data. The results highlighted that weathering process and direct precipitation input are the main factors determining the hydrochemistry of the studied lakes; moreover the morphological characteristics highly affects the physical properties of the lakes starting from stratification process. The acidification status, the atmospheric input of N compounds and the supply of nutrients were considered in detail. The studied lakes seem to be well preserved by acidification risk. Comparing data from Gran Paradiso National Park with data from European mountain regions ranging in N deposition rates, allows to consider long range anthropogenic impact: the detection of relative low Total Nitrogen (TN concentration is not necessarily a synonym of a soft impact of long range pollutants, being the final nitrogen concentration dependent from retention process, closely related to catchment characteristics, besides N deposition rates; moreover the dominance of Inorganic Nitrogen (IN on Organic Nitrogen (ON highlights that the lakes are interested by N deposition and probably by long range transport of pollutants produced in the urbanized area surrounding the massif. However the Gran Paradiso National Park area is by far less affected by atmospheric pollutants than other Alpine regions, as the Central Alps. Total Phosphorus (TP concentration in Gran Paradiso lakes (1-13 μg L-1, mean level = 4 μg L-1 is an index of oligotrophic and ultraoligotrophic conditions and according to Redfield's ratio phosphorus is mainly the phytoplankton growth limiting element

  17. The occurrence of mycoplasmas in the lungs of swine in Gran Canaria (Spain)

    DEFF Research Database (Denmark)

    Assuncao, P.; De la Fe, C.; Kokotovic, Branko

    2005-01-01

    identified as Mycoplasma species. Using different species-specific PCRs, 40, 27, 11 and 7 of the isolates were identified as M hyorhinis, M. hyopneumoniae, M. hyosynoviae and M. flocculare, respectively. Nine of the M. hyopneumoniae cultures were found to be in mixed culture with M. flocculare...... as demonstrated by PCR. By use of a M. flocculare antiserum it was possible to eliminate M. flocculare from M. hyopneumoniae mixed cultures. This study is the first report on isolation of porcine mycoplasmas at Gran Canaria (Spain)....

  18. Assessing Usage and Maximizing Finance Lab Impact: A Case Exploration

    Science.gov (United States)

    Noguera, Magdy; Budden, Michael Craig; Silva, Alberto

    2011-01-01

    This paper reports the results of a survey conducted to assess students' usage and perceptions of a finance lab. Finance labs differ from simple computer labs as they typically contain data boards, streaming market quotes, terminals and software that allow for real-time financial analyses. Despite the fact that such labs represent significant and…

  19. The Design:Lab as platform in participatory design research

    DEFF Research Database (Denmark)

    Binder, Thomas; Brandt, Eva

    2008-01-01

    The notion of laboratory or simply 'lab' has become popular in recent years in areas outside science and technology development. Learning Labs, Innovation Labs, Usability Labs, Media and Communication Labs and even Art Labs designate institutions or fora dedicated to change and experimentation....... Influenced by these currents we use the expression 'Design:Lab' as a shorthand description of open collaborations between many stakeholders sharing a mutual interest in design research in a particular field. Many have reacted to the term 'laboratory' or 'lab' as foreign and awkward to design, and we as well...... as others have frequently used other metaphors like workshop, studio or atelier in design research. In this article we will argue that the laboratory metaphor is particularly suitable and useful for the design:lab, and we will give examples of how we have worked with the design:lab as a platform...

  20. eLabEL: Technology-supported living labs in primary care

    NARCIS (Netherlands)

    Vermeulen, Joan; Huygens, Martine; de Witte, Luc P.; Oude Nijeweme-d'Hollosy, Wendeline; Swinkels, Ilse; van Velsen, Lex Stefan; Jansen, Yvonne

    2015-01-01

    Telecare technologies and eHealth applications can support patients and care professionals. However, these technologies are currently not being implemented in primary care. The eLabEL project aims to contribute to a solution for this problem by establishing Living Labs in which patients, healthcare

  1. Are Virtual Labs as Effective as Hands-on Labs for Undergraduate Physics? A Comparative Study at Two Major Universities

    Science.gov (United States)

    Darrah, Marjorie; Humbert, Roxann; Finstein, Jeanne; Simon, Marllin; Hopkins, John

    2014-01-01

    Most physics professors would agree that the lab experiences students have in introductory physics are central to the learning of the concepts in the course. It is also true that these physics labs require time and money for upkeep, not to mention the hours spent setting up and taking down labs. Virtual physics lab experiences can provide an…

  2. Are Remote Labs Worth the Cost? Insights From a Study of Student Perceptions of Remote Labs

    Directory of Open Access Journals (Sweden)

    David Uttal

    2011-05-01

    Full Text Available Remote online laboratories enable students to conduct scientific investigations using real experimental equipment. However, scaling up remote labs may require significant costs in purchasing and maintaining expensive equipment compared to scaling simulated labs. While these costs are a consequence of using physical equipment, we argue that there are unique educational advantages to remote labs. This paper presents the results of a preliminary study of student perceptions of a remote lab in comparison to an identical lab experience with simulated data. The findings reveal several intriguing themes that highlight the pedagogical value of remote laboratories. In addition, we provide recommendations for the design and pedagogy of online laboratory experiences based on our findings.

  3. Gran Torino’s Boys and Men with Guns: Hmong Perspectives

    Directory of Open Access Journals (Sweden)

    Louisa Schein

    2010-01-01

    Full Text Available This article discusses the Clint Eastwood film Gran Torino in the context of American popular mis-representations of Hmong and from the perspectives of the film‘s Hmong actors and viewers. The analysis begins from the images of Hmong as ―perpetual warrior, ferocious killers ill-fit for American society, and docile fresh-off-the-boat foreigners needing help and protection by white saviors. The bulk of the article presents an interpretation of the recent box office hit Gran Torino radically different from contemporary mainstream response which has centered on Eastwood‘s character and viewed the film mainly as a vision of multicultural inclusion and understanding. This alternate ―ethnotextual approach, reflecting the conversations of a Hmong studies anthropologist and a Hmong filmmaker/activist, includes the perspectives of Hmong involved in creating the film and considers critical response to the final product within the Hmong community. Despite a script that called on them to portray violent gangbanger and hapless Hmong immigrant stereotypes, Hmong actors encourage us to value their creativity in shaping the film through enacting certain roles, no matter how conventionalized, and to expose the film as a white man‘s fantasy.

  4. Determination of free acid in U(VI)-Al(III) solution by Gran plot titration

    International Nuclear Information System (INIS)

    Suh, Moo Yul; Lee, Chang Heon; Sohn, Se Chul; Kim, Jung Suk; Kim, Won Ho; Eom, Tae Yoon

    1999-01-01

    The determination method of free acid in spent U-Al nuclear fuel solutions by Gran plot titration was described. Effect of U(VI) and Al(III) on the alkalimetric titration of nitric acid was investigation in oxalate complexing media as well as in noncomplexing media. Positive biases were observed in both titration media when the end-point was estimated by the Gran plot method. It was found that the cause of the bias was U(VI) in the oxalate complexing media, but Al(III) in the noncomplexing media. The relative error was less than 1% in the titration of 0.1 M HNO 3 at a U(VI):Al(III):H + mole ratio of up to 2:12:1 as long as the pH of the oxalate titration media was sustained to be below 5.0 at the beginning of titration. The method was successfully applied to the determination of nitric acid in a solution of HANARO reactor fuel with U:Al mole ratio of 1:6

  5. La Gran Vía y la arquitectura española contemporánea

    Directory of Open Access Journals (Sweden)

    Jesús López Díaz

    2011-01-01

    Full Text Available El centenario de la Gran Vía madrileña se ha convertido en la oportunidad de conocer con mayor detalle la mayoría de los elementos más significativos, desde el punto de vista de la arquitectura, que jalonan esta arteria, producto de la última gran reforma interior acometida en la ciudad de Madrid. En apenas veinte años, se yerguen los últimos ejemplos de la arquitectura ecléctica historicista, para pasar de un salto como pocas veces en nuestra historiografía arquitectónica, a la construcción del posiblemente mejor ejemplo de arquitectura racionalista, el Edificio Capitol, acompañado de algunos destellos de arquitectura moderna que, tras el traumático paréntesis de la Guerra Civil y la primera posguerra, se verán acompañados por elementos singulares de una arquitectura en búsqueda de un camino sin sentido, promovida por el final de una generación de arquitectos. Esta sensación de aceleración y freno se liga a algunos de los nombres más destacados de la arquitectura española de los primeros dos tercios del siglo XX: Palacios, Anasagasti, Gutiérrez Soto, Fernández-Shaw, Muguruza, Feduchi o Eced entre otros. Este artículo pretende analizar el papel jugado por la Gran Vía madrileña en cuanto a escenario de transformación de nuestra arquitectura contemporánea, así como su papel de faro hasta el despegar que se produce con los nuevos arquitectos cuyo talento es reconocido desde finales de los años 50 hasta nuestros días. El nuevo lenguaje arquitectónico surgido en las décadas de los años veinte y treinta, y mostrado como en pocos entornos en la Gran Vía, se liga necesariamente a elementos de transformación social, económica y cultural que se traducen en nuevas necesidades y nuevas tipologías edificatorias, en nuevos usos derivados de demandas y transformaciones que cambian nuestra Historia contemporánea, acompañado de un nuevo lenguaje arquitectónico, que por un breve momento, nos situó a la par de las nuevas

  6. Environment monitoring using LabVIEW

    International Nuclear Information System (INIS)

    Hawtree, J.

    1995-01-01

    A system has been developed for electronically recording and monitoring temperature, humidity, and other environmental variables at the Silicon Detector Facility located in Lab D. The data is collected by LabVIEW software, which runs in the background on an Apple Macintosh. The software is completely portable between Macintosh, MS Windows, and Sun platforms. The hardware includes a Macintosh with 8 MB of RAM; an external ADC-1 analog-to-digital converter that uses a serial port; LabVIEW software; temperature sensors; humidity sensors; and other voltage/current sensing devices. ADC values are converted to ASCII strings and entered into files which are read over Ethernet. Advantages include automatic logging, automatic recovery after power interruptions, and the availability of stand-alone applications for other locations with inexpensive software and hardware

  7. A Moodle extension to book online labs

    Directory of Open Access Journals (Sweden)

    Antonio C. Cardoso

    2005-11-01

    Full Text Available The social constructivist philosophy of Moodle makes it an excellent choice to deliver e-learning contents that require collaborative activities, such as those that are associated with online labs. In the case of online labs that enable web access to real devices (remote workbenches, access time should be reserved beforehand. A booking tool will avoid access conflicts and at the same time will help the students to organise their time and activities. This paper presents a Moodle extension that was developed within the Leonardo da Vinci MARVEL project, with the objective of meeting this requirement. The booking tool presented enables resource sharing in general and may be used to organise access to any type of scarce resources, such as to online labs and to the videoconferencing rooms that are needed to support collaborative activities.

  8. Collaborative Creation of a Lab Rubric

    Directory of Open Access Journals (Sweden)

    Carrie Miller-DeBoer

    2011-03-01

    Full Text Available While there are a number of tested rubrics in circulation, our task was to intervene in a particular situation: the lead professor was concerned because her graduate teaching assistants held negative views about student performance on the lab reports. GTAs found poor products frustrating, and admitted that their grading was thus superficial and provided no feedback to students. Specifically, GTAs did not feel equipped to evaluate writing and, as a result, simply graded on steps completed in the lab process.We have a rubric now for an Introduction to Zoology lab that could be submitted here as a pretty darn good rubric for other instructors to use. But the intent of our “Tips and Tools” is to describe the actual creation of the rubric. We believe the active “real time” development of the rubric carried as much or more value than the finished product.

  9. LabVIEW Real-Time

    CERN Multimedia

    CERN. Geneva; Flockhart, Ronald Bruce; Seppey, P

    2003-01-01

    With LabVIEW Real-Time, you can choose from a variety of RT Series hardware. Add a real-time data acquisition component into a larger measurement and automation system or create a single stand-alone real-time solution with data acquisition, signal conditioning, motion control, RS-232, GPIB instrumentation, and Ethernet connectivity. With the various hardware options, you can create a system to meet your precise needs today, while the modularity of the system means you can add to the solution as your system requirements grow. If you are interested in Reliable and Deterministic systems for Measurement and Automation, you will profit from this seminar. Agenda: Real-Time Overview LabVIEW RT Hardware Platforms - Linux on PXI Programming with LabVIEW RT Real-Time Operating Systems concepts Timing Applications Data Transfer

  10. Digital Design with KP-Lab

    Directory of Open Access Journals (Sweden)

    D. Ponta

    2007-08-01

    Full Text Available KP-Lab is an EU Integrated Project envisioning a learning system that facilitates innovative practices of sharing, creating and working with knowledge in education and workplaces. The project exploits a novel pedagogical view, the knowledge-creation metaphor of learning. According to such “trialogical” approach, cognition arises through collaborative work in systematically developing shared “knowledge artefacts”, such as concepts, plans, material products, or social practices. The paper presents the plan of a pilot course to test the KP-Lab methodologies and tools in the field of Digital Design.

  11. [Semiotic Studies Lab for Patient Care Interactions].

    Science.gov (United States)

    Nunes, Dulce Maria; Portella, Jean Cristtus; Bianchi e Silva, Laura

    2011-12-01

    The aim of this experience report is to present the Semiotic Studies Lab for Patient Care Interactions (Laboratório de Estudos Semióticos nas Interações de Cuidado - LESIC). The lab was set up at the Nursing School of the Federal University of Rio Grande do Sul (UFRGS), Brazil in 2010. It has the purpose of providing didactic and pedagogical updates, based on the Theory developed by the Paris School of Semiotics, that enable the increase of knowledge and interactive/observational skills regarding the nature and mastery of human care.

  12. Las patentes de hormigón armado. Del gran negocio al gran desarrollo tecnológico. Los antecedentes del Movimiento Moderno

    Directory of Open Access Journals (Sweden)

    Armando Valenzuela

    2015-05-01

    Full Text Available El desarrollo de la arquitectura del siglo XX no puede entenderse desasociado de la evolución de las tecnologías de la construcción y los sistemas estructurales. La revolución industrial, sobre todo el segundo período, fue un tiempo de grandes avances tecnológicos y enormes cambios sociales que supusieron la transfor­mación de las ciudades y la creación de nuevos tipos edificatorios que pudiesen dar respuestas a las nuevas necesidades sociales y productivas. Fue también en este período cuando se desarrollaron nuevas técnicas y sistemas que mejoraron los estándares de habitabilidad de los edificios. La invención del hormigón armado a mediados del siglo XIX supuso el mayor avance tecnológico y económico de la arquitectura, generando por primera vez una industria especializada y a gran escala que desarrollaba sistemas de construcción basados, primero en ensayos y posteriormente en profundos estudios científicos. Los inventos de sistemas estructurales basados en el hormigón armado se protegieron celosa­mente mediante patentes que garantizaban a sus creadores importantes ingresos económicos a nivel mundial. En las dos primeras décadas del siglo XX aparecieron las primeras normativas nacionales con el fin de evitar el monopolio de las grandes empresas constructoras, liberando los sistemas estructurales y dando paso a los proyectistas.

  13. The Portuguese Contribution for lab2go - pt.lab2go

    Directory of Open Access Journals (Sweden)

    Maria Teresa Restivo

    2013-01-01

    Full Text Available Online experimentation provides innovative and valuable tools for use in academy, in high schools, in industry and in medical areas. It has also become a precious tool for educational and training purposes in any of those areas. Looking at online experimentation as a pure distance learning tool it represents a very efficient way of sharing hands-on capabilities, for example with developing countries. In Portugal a new consortium of online experimentation was created for fostering the national potential, using the Portuguese version of lab2go web platform, pt.lab2go. The authors pretend to demonstrate some of capabilities of the consortium in sharing online labs.

  14. Electronics Lab Instructors' Approaches to Troubleshooting Instruction

    Science.gov (United States)

    Dounas-Frazer, Dimitri R.; Lewandowski, H. J.

    2017-01-01

    In this exploratory qualitative study, we describe instructors' self-reported practices for teaching and assessing students' ability to troubleshoot in electronics lab courses. We collected audio data from interviews with 20 electronics instructors from 18 institutions that varied by size, selectivity, and other factors. In addition to describing…

  15. Encouraging Creativity in the Science Lab

    Science.gov (United States)

    Eyster, Linda

    2010-01-01

    Although science is a creative endeavor (NRC 1996, p. 46), many students think they are not encouraged--or even allowed--to be creative in the laboratory. When students think there is only one correct way to do a lab, their creativity is inhibited. Park and Seung (2008) argue for the importance of creativity in science classrooms and for the…

  16. FameLab - Swiss Semi Finals

    CERN Multimedia

    Corinne Pralavorio

    2012-01-01

    Twenty-two young scientists participated in the FameLab semi-final at CERN's Globe of Science and Innovation on 4 February, supported by a large audience and by more than 100 fans following via webcast. A panel of judges chose Lemmer and four other candidates to join five other semi-finalists at the national finals in Zurich on 30 March.

  17. mQoL smart lab

    DEFF Research Database (Denmark)

    De Masi, Alexandre; Ciman, Matteo; Gustarini, Mattia

    2016-01-01

    As a base for hypothesis formulation and testing, accurate, timely and reproducible data collection is a challenge for all researchers. Data collection is especially challenging in uncontrolled environments, outside of the lab and when it involves many collaborating disciplines, where the data mu...

  18. Information at a Cost: A Lab Experiment

    NARCIS (Netherlands)

    P. Robalo (Pedro); R.S. Sayag (Rei)

    2012-01-01

    textabstractThe supposed irrelevance of historical costs for rational decision making has been the subject of much interest in the economic literature. In this paper we explore whether individual decision making under risk is affected by the cost of the supplied information. Outside of the lab, it

  19. Nonverbal Communication and Writing Lab Tutorials.

    Science.gov (United States)

    Claywell, Gina

    Writing labs should utilize the knowledge gained from a variety of fields to enhance further their programs, particularly with regard to the study of nonverbal communication. Regardless of the sincerity and importance of the tutor's suggestions, nonverbal messages often are sent to the student which undermine the session. Various channels of…

  20. Design Lab 2005 : pilk steriilsesse elektrotulevikku

    Index Scriptorium Estoniae

    2005-01-01

    Design Lab kutsub disainereid ja üliõpilasi üle terve maailma tegelema kaugemale tulevikku suunatud visioonidega. 2005. a. konkurss otsis nutikaid ja säästlikke lahendusi, mis võiksid 2020. a. kodudes olla juba juurdunud, keskenduti kodutehnikale

  1. Carleton to oversee $40 million lab grant

    CERN Multimedia

    Singer, Zev

    2003-01-01

    "Carleton University got a major gift yesterday, as the federal government announced the university will oversee a $40-million grant to run the world's deepest underground lab at the Sudbury Neutrino Observatory. Five other universities are partners in the project" (1/2 page).

  2. Displacing Media: LCD LAB Artistic Residency

    Directory of Open Access Journals (Sweden)

    Filipe Pais

    2012-12-01

    Full Text Available This review refers to an artistic residency which took place at LCD LAB -  CAAA at Guimarães, in March, exploring a strategy for media art called Media Displacement. The text introduces the strategy very briefly and describes the residency's organization, structure, processses and the results produced.

  3. Surfactant Adsorption: A Revised Physical Chemistry Lab

    Science.gov (United States)

    Bresler, Marc R.; Hagen, John P.

    2008-01-01

    Many physical chemistry lab courses include an experiment in which students measure surface tension as a function of surfactant concentration. In the traditional experiment, the data are fit to the Gibbs isotherm to determine the molar area for the surfactant, and the critical micelle concentration is used to calculate the Gibbs energy of micelle…

  4. A Hardware Lab Anywhere At Any Time

    Directory of Open Access Journals (Sweden)

    Tobias Schubert

    2004-12-01

    Full Text Available Scientific technical courses are an important component in any student's education. These courses are usually characterised by the fact that the students execute experiments in special laboratories. This leads to extremely high costs and a reduction in the maximum number of possible participants. From this traditional point of view, it doesn't seem possible to realise the concepts of a Virtual University in the context of sophisticated technical courses since the students must be "on the spot". In this paper we introduce the so-called Mobile Hardware Lab which makes student participation possible at any time and from any place. This lab nevertheless transfers a feeling of being present in a laboratory. This is accomplished with a special Learning Management System in combination with hardware components which correspond to a fully equipped laboratory workstation that are lent out to the students for the duration of the lab. The experiments are performed and solved at home, then handed in electronically. Judging and marking are also both performed electronically. Since 2003 the Mobile Hardware Lab is now offered in a completely web based form.

  5. Lab-on a-Chip

    Science.gov (United States)

    2003-01-01

    Helen Cole, the project manager for the Lab-on-a-Chip Applications Development program, and Lisa Monaco, the project scientist for the program, insert a lab on a chip into the Caliper 42 which is specialized equipment that controls processes on commercial chips to support development of lab-on-a-chip applications. The system has special microscopes and imaging systems, so scientists can process and study different types of fluid, chemical, and medical tests conducted on chips. For example, researchers have examined fluorescent bacteria as it flows through the chips' fluid channels or microfluidic capillaries. Researchers at NASA's Marshall Space Flight Center (MSFC) in Huntsville, Alabama, have been studying how the lab-on-a-chip technology can be used for microbial detection, water quality monitoring, and detecting biosignatures of past or present life on Mars. The Marshall Center team is also collaborating with scientists at other NASA centers and at universities to develop custom chip designs for not only space applications, but for many Earth applications, such as for detecting deadly microbes in heating and air systems. (NASA/MSFC/D.Stoffer)

  6. La evolución de los sistemas constructivos y estructurales en Las Palmas de Gran Canaria como instrumento de datación de la construcción en Gran Canaria (1478-1950)

    OpenAIRE

    Galtier Barroso, Gazmira

    2016-01-01

    Programa de doctorado: La restauración y rehabilitación arquitectónica. Investigación, tendencias e innovaciones. La fecha de publicación es la fecha de lectura [ES]La presente tesis doctoral analiza la historia de la implantación de los sistemas constructivos y estructurales en Las Palmas de Gran Canaria, atendiendo a los factores descritos anteriormente, como caso significativo de la arquitectura realizada en Gran Canaria, en el periodo correspondiente al desarrollo de las formas tradici...

  7. LabVIEW A Developer's Guide to Real World Integration

    CERN Document Server

    Fairweather, Ian

    2011-01-01

    LabVIEW(t) has become one of the preeminent platforms for the development of data acquisition and data analysis programs. LabVIEW(t): A Developer's Guide to Real World Integration explains how to integrate LabVIEW into real-life applications. Written by experienced LabVIEW developers and engineers, the book describes how LabVIEW has been pivotal in solving real-world challenges. Each chapter is self-contained and demonstrates the power and simplicity of LabVIEW in various applications, from image processing to solar tracking systems. Many of the chapters explore how exciting new technologies c

  8. La Restauración del Templo I “Gran Jaguar” de Tikal (Guatemala

    Directory of Open Access Journals (Sweden)

    Gaspar Muñoz Cosme

    1997-05-01

    Full Text Available La ciudad maya de Tikal, que alcanzó su máximo explendor en los siglos VII y VIII de nuestra era, ha sido declarada por la UNESCO Patrimonio Cultural de la Humanidad en 1979 y Monumento Universal en 1986. El Templo I de Tikal, tambien conocido con el nombre de Templo del “Gran Jaguar”, constituye hoy en día el emblema de esta ciudad maya de Guatemala. Gaspar Muñoz Cosme, arquitecto, explica los interesantes trabajos de restauración de este Templo I, desarrollados entre 1992 y 1996, planteando en las conclusiones los costosos problemas de conservación propios de estas arquitecturas, y los objetivos que debe contemplar un programa restaurador.

  9. ¿Estás nervioso? Las elecciones desde una villa del Gran Buenos Aires

    Directory of Open Access Journals (Sweden)

    María Cecilia Ferraudi Curto

    2011-11-01

    Full Text Available En este artículo pretendo explorar la política en el Gran Buenos Aires a partir de un análisis de las elecciones legislativas de 2009 desde mi etnografía en una villa de La Matanza en proceso de urbanización. A partir de allí, intentaré dar cuenta de una serie de perspectivas que quedan opacadas en los análisis centrados en procesos electorales. Mientras éstos enfocan hacia las estrategias de campaña de los candidatos y los entramados políticos desde los cuales construyen apoyos para explicar los resultados electorales (o intentar predecirlos, el punto central de este artículo consiste en mostrar cómo las elecciones se imponen y son apropiadas localmente a partir de una perspectiva centrada en la urbanización de la villa.

  10. El chocolate antes de la Gran Guerra: una perspectiva desde los sistemas abiertos

    Directory of Open Access Journals (Sweden)

    Oscar M. Granados

    2017-08-01

    Full Text Available Este artículo evalúa la transformación del consumo global de chocolate en el periodo previo a la Gran Guerra (1870-1914. La investigación revela que el consumo de chocolate, más allá de una relación causal del mejoramiento en el ingreso y la búsqueda de un mejor estatus social, emergió de una interacción continua de diversos elementos como la innovación chocolatera, el emprendimiento, el comercio, la banca, la economía política y la política imperial. Por lo tanto, el consumo de chocolate funcionó como un sistema abierto.

  11. El suelo urbano y los asentamientos informales en el gran resistencia. 1. Chaco, Argentina

    Directory of Open Access Journals (Sweden)

    María Cristina Magnano

    2005-01-01

    Full Text Available En el artículo se describe un creciente proceso de ocupaciones ilegales de terrenos por parte de familias sin hogar en Gran Resistencia del Chaco, Argentina. Luego la ocupación es seguida por gestiones legislativas que traspasan al Estado la responsabilidad de expropiar en beneficio de las familias ocupantes. La realidad demuestra que este último no ejecuta sus compromisos legales por carencia de recursos, con el agravante que los precarios presupuestos habitacionales locales no sólo son disminuidos, sino que en los últimos años se han suprimido varios, dejando sin atención necesidades urgentes de las familias sin casa. Los autores concluyen el artículo proponiendo un temario a debatir públicamente en torno las situaciones más críticas, urgentes y de interés local con la participación de todos los sectores vigentes de la institucionalidad.

  12. Colombia y Gran Bretaña al borde de la guerra (1836

    Directory of Open Access Journals (Sweden)

    Lucio Pabón Núñez

    1983-01-01

    Full Text Available En el siglo pasado y aún a principios del actual, los países europeos con el pretexto de proteger las vidas y los intereses de sus súbditos residentes en países hispanoamericanos, constituidos como naciones independientes, practicaron la violenta presión contra quienes eran acusados de no dar protección suficiente a tales súbditos . No fue la Gran Bretana una excepción de este régimen de atropellos y de descaradas amenazas; ni estuvo nuestra patria exenta de estos peligros. Un caso típico fue el de las reclamaciones del "procónsul" de "Su Majestad Británica" José Russell en Panamá.

  13. Contribución al estudio de los túneles ferroviarios de gran longitud

    OpenAIRE

    Beltrán Montero, Alberto

    2011-01-01

    En las últimas décadas estamos viviendo un fenómeno de expansión de las líneas ferroviarias de alta velocidad en todo el mundo. Los exigentes trazados de este tipo de líneas obligan a construir túneles de gran longitud y a grandes profundidades para poder atravesar los sistemas montañosos más importantes. La construcción de túneles de más de 20 kilómetros de longitud con coberteras superiores a los 1.000 metros, sigue siendo, a pesar del elevado número de proyectos de grandes túneles ejec...

  14. Una manera de nombrar el deseo en Toda esa gran verdad

    Directory of Open Access Journals (Sweden)

    Mauricio List

    2011-01-01

    Full Text Available Este artículo analiza la novela Toda esa gran verdad (2006 del mexicano Eduardo Montagner. El artículo centra su atención en el tema de la sexualidad, particularmente la del personaje principal. La idea es reflexionar acerca de formas disidentes de la sexualidad que rompen con las maneras normativas y que son sancionadas socialmente. En este caso en particular, unas botas de hule son el centro de la atención de un joven de una comunidad rural que dice estar enamorado del dueño de dicho calzado. Él va aprendiendo que un sujeto fetichista requiere de su objeto para disfrutar del placer erótico.

  15. The hope of the universe: Bolivarianism in the era of Gran Venezuela (1974-1983

    Directory of Open Access Journals (Sweden)

    Tomás Straka

    2017-09-01

    Full Text Available This work reviews Venezuelan Bolivarianism and its relationship with the political discourses and projects during what has been called “Gran Venezuela” (Great Venezuela, 1974- 1983. During this period, Venezuela enjoyed a combination of two decades of democratic stability and high oil prices, becoming an exceptionally prosperous, free and peaceful country in Latin-America. In this context, democratic governments used political Bolivarian historicism in order to legitimize their apparent success as proof that they were complying with the vision set out by Simón Bolívar, traditionally associated with conservative thought and dictatorship. It also used Bolivarianism to project its status as an emerging power in the Third World.

  16. Desarrollo urbano e inundaciones en la ciudad de las Palmas de Gran Canaria(1869-2000

    Directory of Open Access Journals (Sweden)

    Pablo Máyer Suárez

    2002-01-01

    Full Text Available En la ciudad de Las Palmas de Gran Canaria los episodios de lluvia facilitan la manifes-tación de riesgos geomorfológicos. El de las inundaciones constituye uno de los más impor-tantes y ha estado presente desde los orígenes de esta ciudad. Las peculiares característicasdel medio físico, tanto desde el punto de vista topográfico como desde el geológico-geomor-fológico; las distintas formas de ocupación del espacio, con áreas de crecimiento planificadasy otras de crecimiento espontáneo, y las diversas intervenciones en áreas consolidadas, quepotencian o agravan estas inundaciones, hacen de esta ciudad una amalgama en la que el aná-lisis de las causas de las inundaciones resulta un proceso complejo

  17. El feminismo y el pacifismo en tiempos de la Gran Guerra europea (1914-19181

    Directory of Open Access Journals (Sweden)

    María Himelda Ramírez

    2016-01-01

    Full Text Available Este artículo propone una reinterpretación de los cambios en la vida de las mujeres durante las movilizaciones de la Gran Guerra europea (1914-1918, desde la perspectiva de las redefiniciones de las relaciones de género. Se realiza un recorrido por una selección de historiografía feminista, por fragmentos de la historia crítica de la familia y por datos biográficos y autobiográficos de activistas de los movimientos sufragistas y pacifistas. Se aprecian las reacciones de adhesión de las mujeres a la causa beligerante suscitadas por el patriotismo, su solidaridad con los combatientes sobrevivientes y con sus familias, así como sus críticas pacifistas al militarismo.

  18. The commissioning instrument for the Gran Telescopio Canarias: made in Mexico

    Science.gov (United States)

    Cuevas, Salvador; Sánchez, Beatriz; Bringas, Vicente; Espejo, Carlos; Flores, Rubén; Chapa, Oscar; Lara, Gerardo; Chavoya, Armando; Anguiano, Gustavo; Arciniega, Sadot; Dorantes, Ariel; Gonzalez, José L.; Montoya, Juan M.; Toral, Rafael; Hernández, Hugo; Nava, Roberto; Devaney, Nicolas; Castro, Javier; Cavaller, Luis; Farah, Alejandro; Godoy, Javier; Cobos, Francisco; Tejada, Carlos; Garfias, Fernando

    2006-02-01

    In March 2004 was accepted in the site of Gran Telescopio Canarias (GTC) in La Palma Island, Spain, the Commissioning Instrument (CI) for the GTC. During the GTC integration phase, the CI will be a diagnostic tool for performance verification. The CI features four operation modes-imaging, pupil imaging, Curvature Wave-front sensing (WFS), and high resolution Shack-Hartmann WFS. This instrument was built by the Instituto de Astronomia UNAM in Mexico City and the Centro de Ingenieria y Desarrollo Industrial (CIDESI) in Queretaro, Qro under a GRANTECAN contract after an international public bid. Some optical components were built by Centro de Investigaciones en Optica (CIO) in Leon Gto and the biggest mechanical parts were manufactured by Vatech in Morelia Mich. In this paper we made a general description of the CI and we relate how this instrument, build under international standards, was entirely made in Mexico.

  19. Site acceptance of the commissioning instrument for the Gran Telescopio Canarias

    Science.gov (United States)

    Cuevas, Salvador; Sánchez, Beatriz; Bringas, Vicente; Espejo, Carlos; Flores, Rubén; Chapa, Oscar; Lara, Gerardo; Chavoya, Armando; Anguiano, Gustavo; Arciniega, Sadot; Dorantes, Ariel; Gonzalez, José Luis; Montoya, Juan Manuel; Toral, Rafael; Hernández, Hugo; Nava, Roberto; Devaney, Nicholas; Castro, Javier; Cavaller, Lluis; Farah, Alejandro; Godoy, Javier; Cobos, Francisco; Tejada, Carlos; Garfias, Fernando

    2006-06-01

    In March 2004, the Commissioning Instrument (CI) for the GTC was accepted in the site of The Gran Telescopio Canarias (GTC) located in La Palma Island, Spain. During the GTC integration phase, the CI will be a diagnostic tool for performance verification. The CI features four operation modes-imaging, pupil imaging, Curvature Wave-front sensing (WFS), and high resolution Shack-Hartmann WFS. The imaging mode permits to qualify the GTC image quality. The Pupil Mode permits estimate the GTC stray light. The segments figure, alignment and cophasing verifications are made with both WFS modes. In this work we describe the Commissioning Instrument and show some tests results obtained during the site acceptance process at the GTC site.

  20. Zooplankton biomass and indices of feeding and metabolism in island-generated eddies around Gran Canaria

    Science.gov (United States)

    Hernández-León, S.; Almeida, C.; Gómez, M.; Torres, S.; Montero, I.; Portillo-Hahnefeld, A.

    2001-08-01

    Zooplankton biomass and indices of grazing (gut fluorescence), respiration (electron transfer system, ETS), ammonia excretion (glutamate dehydrogenase, GDH) and growth (aspartate transcarbamylase, ATC) were studied around the island of Gran Canaria (Canary Islands) during the so-called "late winter bloom". Four size classes (100-200, 200-500, 500-1000 and >1000 μm) were studied to assess the contribution of each size fraction to the mesoscale plankton distribution around the island. Cyclonic and anticyclonic eddies were observed downstream the island transporting and entraining water rich in chlorophyll. Zooplankton biomass showed a high variability around the island but it was dramatically lower in the core of the cyclonic eddy induced by the island, probably due to the divergent effect produced by the physical structure. A filament of relatively cold-water was also found reaching the island from the upwelling area off northwest Africa. High zooplankton biomass was observed in association with the filament water and in the vicinity of the anticyclonic eddy shed by the island. Specific gut content showed higher values in the boundaries of the cyclonic structures, while ETS and GDH activities where higher windward of the island, in both the cyclonic and anticyclonic eddies depending on the size fraction considered. With the restrictions of using those indices, control of primary production by grazing was 11-22% and up to 41% of the calculated ingestion from the indices of metabolism and growth could be supported by nonpigmented food. Calculated excretion rates could support about 8% of primary production. The low impact of zooplankton on autotrophic production, the low values of the index of growth and the distribution of biomass in relation to the presence of eddies downstream of Gran Canaria suggest that accumulation was the causative mechanism for the presence of high zooplankton biomass leeward of the island.

  1. Violence in paradise: Cranial trauma in the prehispanic population of Gran Canaria (Canary Islands).

    Science.gov (United States)

    Delgado-Darias, Teresa; Alberto-Barroso, Verónica; Velasco-Vázquez, Javier

    2018-01-04

    This paper addresses the prevalence and pattern of physical violence in the prehispanic society of Gran Canaria and discusses its link with the social structure and insular context in which that people lived. 347 prehispanic crania from Guayadeque Ravine (575-1415 AD) have been examined in order to determine the frequency, types, location, and timing of trauma. Craniofacial injuries are present in 27.4% of the crania examined. Only 2% display perimortem trauma. Most of the injuries (84.3%) correspond to depressed blunt force trauma, with an ellipsoidal or circular shape. Most of these are in the anterior aspect of the cranium. Males are significantly more affected than females. The aboriginal population of Gran Canaria show a high frequency of traumatic injuries to the skull compared to other archaeological groups. Their frequent location in the anterior aspect suggests regular face-to-face confrontations. However, the lethal injuries typically occurring in large-scale combat are scarce. Practices such as ritualized combat, mentioned in ethnohistorical sources, would help to channel and mitigate inter-group conflict. The predominance of depressed blunt force trauma is in accordance with the weapons used by those populations: hand-thrown stones, clubs and sticks. The higher frequency in males indicates that they took part in direct violence more than females did. The hierarchical organization of their society may have led to frequent situations of conflict. The insular nature of a territory barely 1,500 m 2 in size was a determining factor in competition for access to food resources, especially at times of climate crises or population growth. © 2018 Wiley Periodicals, Inc.

  2. Upgrading of automobile shredder residue via innovative granulation process 'ReGran'.

    Science.gov (United States)

    Holthaus, Philip; Kappes, Moritz; Krumm, Wolfgang

    2017-01-01

    Stricter regulatory requirements concerning end-of-life vehicles and rising disposal costs necessitate new ways for automobile shredder residue utilisation. The shredder granulate and fibres, produced by the VW-SICON-Process, have a high energy content of more than 20 MJ kg -1 , which makes energy recovery an interesting possibility. Shredder fibres have a low bulk density of 60 kg m -3 , which prevents efficient storing and utilisation as a refuse-derived fuel. By mixing fibres with plastic-rich shredder granulate and heating the mixture, defined granules can be produced. With this 'ReGran' process, the bulk density can be enhanced by a factor of seven by embedding shredder fibres in the partially melted plastic mass. A minimum of 26-33 wt% granulate is necessary to create enough melted plastic. The process temperature should be between 240 °C and 250 °C to assure fast melting while preventing extensive outgassing. A rotational frequency of the mixing tool of 1000 r min -1 during heating and mixing ensures a homogenous composition of the granules. During cooling, lower rotational frequencies generate bigger granules with particles sizes of up to 60 mm at 300 r min -1 . To keep outgassing to a minimum, it is suggested to melt shredder granulate first and then add shredder fibres. Adding coal, wood or tyre fluff as a third component reduces chlorine levels to less than 1 wt%. The best results can be achieved with tyre fluff. In combination with the VW-SICON-Process, ReGran produces a solid recovered fuel or 'design fuel' tailored to the requirements of specific thermal processes.

  3. Awakening interest in the natural sciences - BASF's Kids' Labs.

    Science.gov (United States)

    Lang, Cinthia

    2012-01-01

    At BASF's Ludwigshafen headquarters, kids and young adults in grades 1-13 can learn about chemistry in the Kids' Labs. Different programs exist for different levels of knowledge. In the two 'Hands-on Lab H(2)O & Co.' Kids' Labs, students from grades 1-6 explore the secrets of chemistry. BASF Kids' Labs have now been set up in over 30 countries. In Switzerland alone, almost 2,000 students have taken part in the 'Water Loves Chemistry' Kids' Lab since it was started in 2011. In Alsace, 600 students have participated to date. In the Teens' Lab 'Xplore Middle School', middle school students explore five different programs with the themes 'substance labyrinth', 'nutrition', 'coffee, caffeine & co.', 'cosmetics' and 'energy'. Biotechnological methods are the focus of the Teens' Lab 'Xplore Biotech' for students taking basic and advanced biology courses. In the 'Xplore High School' Teens' Lab, chemistry teachers present their own experimental lab instruction for students in basic and advanced chemistry courses. The Virtual Lab has been expanding the offerings of the BASF Kids' Labs since 2011. The online lab was developed by the company for the International Year Of Chemistry and gives kids and young adults the opportunity to do interactive experiments outside of the lab.

  4. Striking resilience of an island endemic bird to a severe perturbation: the case of the Gran Canaria blue chaffinch

    OpenAIRE

    Moreno, A. C.; Carrascal, L. M.; Delgado, A.; Suárez, V.; Seoane, J.

    2018-01-01

    Marcada resiliencia de una especie de ave insular endémica después de una perturbación intensa: el caso del pinzón azul de Gran Canaria Son pocos los datos disponibles sobre la tendencia demográfica de las especies en peligro de extinción en zonas de protección especial y su capacidad de recuperarse de perturbaciones catastróficas. Se estudia la tendencia demográfica del pinzón azul de Gran Canaria (Fringilla polatzeki), un especialista de hábitat endémico de las Islas Canarias, restrin...

  5. Rumbo al Gran Banco: una etnohistoria de la pesca industrial del bacalao en los Bancos de Terranova

    OpenAIRE

    García Orellán, Rosa

    2006-01-01

    [ES]Rumbo al Gran Banco parte de los comienzos de la pesca industrial del bacalao española en el primer tercio del siglo XX, la situación que allí encontraron, los avatares humanos y los avances tecnológicos que se van incorporando, la Guerra Civil y la guerra mundial, la bonanza pesquera, la incorporación de las parejas, la concurrencia, así como la exploración de todo el Gran Banco. La gestión por parte de Canadá de las doscientas millas marinas y la moratoria del bacalao....

  6. Conciertos escolares de la Fundación Orquesta Filarmónica de Gran Canaria: 1992-2015

    OpenAIRE

    Alonso Santana, Sergio A.

    2017-01-01

    Programa de doctorado: Formación del Profesorado. La fecha de publicación es la fecha de lectura. [ES]La Orquesta Filarmónica de Gran Canaria siempre ha estado vinculada a lo largo de su historia con la pedagogía musical. Durante los años setenta, Gran Canaia se convirtió en un perfecto laboratorio articulando propuestas de sensibilización musical entre los jóvenes en edades escolares que sirvió de base para la futura creación de los Conciertos Escolares de la Fundación Orquesta Filarmónic...

  7. Ultrafiltration Lactic Acid Bacteria (LAB in mung Beans Broth by Mixed LAB Culture

    Directory of Open Access Journals (Sweden)

    Aspiyanto Aspiyanto

    2014-06-01

    Full Text Available Increasing Lactic Acid Bacteria (LAB concentration in fermented broth of mung beans by mixed culture of Lactobacillus sp. and Streptococcus thermophillus through ultrafiltration (UF (20,000 MWCO at flow rate of ~8.87 L/min, room temperature and pressure 5 and 7 bars for 0, 30, 60, 90 and 120 minutes was performed. The results showed that pressure and time affected on UF performance, total solids, total protein and total number of LAB. Optimal time at pressure 5 bar was reached 60 minutes with flux 11.94 L/m2.hour, total solids 13.9423%, total protein 8.95%, total LAB 6.18 log CFU/mL, Robs of total solids 3.45%, total protein  58.67%, LAB 100% and DC 1.38 folds. The best time at 7 bar was reached 30 minutes with flux 16.16 L/m2.hour, total solids 12.2879%, total protein 4.41%, total LAB 6.04 Log CFU/mL, Robs of total solids 11.98%, total protein 45.76%, LAB 99.5 and DC 1.16 folds.

  8. CELSTEC Learning Labs: Mobile App Development for Education and Training

    NARCIS (Netherlands)

    Specht, Marcus

    2011-01-01

    Specht, M. (2011). CELSTEC Learning Labs: Mobile App Development for Education and Training. Presentation given in Workshop at CELSTEC Learning Lab for Bluetea. February, 21, 2011, Heerlen, The Netherlands.

  9. Needsfinding in living labs : A structured research approach

    NARCIS (Netherlands)

    Savelkoul, L.E.M.; Peutz, M.

    Living labs enable innovations to be facilitated and implemented quickly and efficiently. A key element of the living lab approach is the active involvement of users. In this article, we examine a structured needsfinding phase of a living lab infrastructure project within the context of bicycle

  10. Experiential Learning of Digital Communication Using LabVIEW

    Science.gov (United States)

    Zhan, Wei; Porter, Jay R.; Morgan, Joseph A.

    2014-01-01

    This paper discusses the design and implementation of laboratories and course projects using LabVIEW in an instrumentation course. The pedagogical challenge is to enhance students' learning of digital communication using LabVIEW. LabVIEW was extensively used in the laboratory sessions, which better prepared students for the course projects. Two…

  11. Introduction to Computing: Lab Manual. Faculty Guide [and] Student Guide.

    Science.gov (United States)

    Frasca, Joseph W.

    This lab manual is designed to accompany a college course introducing students to computing. The exercises are designed to be completed by the average student in a supervised 2-hour block of time at a computer lab over 15 weeks. The intent of each lab session is to introduce a topic and have the student feel comfortable with the use of the machine…

  12. Cassandra - WP400 - final report of living lab 2

    NARCIS (Netherlands)

    Engler, M.; Klievink, A.J.

    2014-01-01

    This CASSANDRA LL2 final deliverable contains all information regarding the CASSANDRA Living Lab Europe – USA via Bremerhaven including information from two intermediate reports (CASSANDRA D4.21 and D4.22) about the very same Living Lab handed in during runtime of the Living Lab. CASSANDRA Living

  13. The NOAO Data Lab PHAT Photometry Database

    Science.gov (United States)

    Olsen, Knut; Williams, Ben; Fitzpatrick, Michael; PHAT Team

    2018-01-01

    We present a database containing both the combined photometric object catalog and the single epoch measurements from the Panchromatic Hubble Andromeda Treasury (PHAT). This database is hosted by the NOAO Data Lab (http://datalab.noao.edu), and as such exposes a number of data services to the PHAT photometry, including access through a Table Access Protocol (TAP) service, direct PostgreSQL queries, web-based and programmatic query interfaces, remote storage space for personal database tables and files, and a JupyterHub-based Notebook analysis environment, as well as image access through a Simple Image Access (SIA) service. We show how the Data Lab database and Jupyter Notebook environment allow for straightforward and efficient analyses of PHAT catalog data, including maps of object density, depth, and color, extraction of light curves of variable objects, and proper motion exploration.

  14. New mission for the national labs

    International Nuclear Information System (INIS)

    Weisman, J.

    1995-01-01

    As a testing moratorium takes hold, the future of the weapons laboratories may lie in a $3 billion package of science projects meant to keep the arsenal reliable-and weapons-designing talents sharp. When President Clinton declared an end to all nuclear testing a month ago, he offered the nation's three weapons laboratories an enormous, expensive pacifier-a $3 billion package of scientific projects to replace testing. The labs swallowed hard, choked back their conviction that explosive testing is the best and cheapest means of ensuring the reliability of the nation's nuclear stockpile, and took the bait. The lab directors duly issued statements embracing the test ban-providing the new program materializes

  15. New mission for the national labs

    Energy Technology Data Exchange (ETDEWEB)

    Weisman, J.

    1995-10-06

    As a testing moratorium takes hold, the future of the weapons laboratories may lie in a $3 billion package of science projects meant to keep the arsenal reliable-and weapons-designing talents sharp. When President Clinton declared an end to all nuclear testing a month ago, he offered the nation`s three weapons laboratories an enormous, expensive pacifier-a $3 billion package of scientific projects to replace testing. The labs swallowed hard, choked back their conviction that explosive testing is the best and cheapest means of ensuring the reliability of the nation`s nuclear stockpile, and took the bait. The lab directors duly issued statements embracing the test ban-providing the new program materializes.

  16. Implementation of a Mobile Accessible Remote Lab

    Directory of Open Access Journals (Sweden)

    Danilo Garbi Zutin

    2008-07-01

    Full Text Available The purpose of the proposed research is to designand implement a LabVIEW-based remote lab client to runon a TCP/IP enabled PDA (Personal Digital Assistantdevice, thus teaching using this wireless m-learning systemwill not be limited by time and location. In addition,resources and equipments can be integrated and shared tothe extent that critically events can be monitored andhandled in time. An environment will be created to trainstudents to handle factory automation, data acquisition,data management, and manufacturing processes usingmobile devices. Furthermore, the integration and sharing oflab equipments via the Internet is a kind of teachingenvironment which promotes learning interests andefficiency using mobile devices.

  17. Technology Roadmap: Lab-on-a-Chip

    Directory of Open Access Journals (Sweden)

    Pattharaporn Suntharasaj

    2010-04-01

    Full Text Available With the integration of microfluidic and MEMS technologies, biochips such as the lab-on-a-chip (LOC devices are at the brink of revolutionizing the medical disease diagnostics industries. Remarkable advancements in the biochips industry are making products resembling Star Trek.s "tricorder" and handheld medical scanners a reality. Soon, doctors can screen for cancer at the molecular level without costly and cumbersome equipments, and discuss treatment plans based on immediate lab results. This paper develops a roadmap for a hypothetical company (XI which is seeking to be successful in this market. The roadmapping process starts with gathering data through literature research and expert opinions, and progress through defining the market/product/technology layers, linking and integrating these layers, and finally creating a labon-a-chip for disease diagnostics technology roadmap.

  18. Lab-on-a-Chip Multiplex Assays.

    Science.gov (United States)

    Peter, Harald; Wienke, Julia; Bier, Frank F

    2017-01-01

    Lab-on-a-chip multiplex assays allow a rapid identification of multiple parameters in an automated manner. Here we describe a lab-based preparation followed by a rapid and fully automated DNA microarray hybridization and readout in less than 10 min using the Fraunhofer in vitro diagnostics (ivD) platform to enable rapid identification of bacterial species and detection of antibiotic resistance. The use of DNA microarrays allows a fast adaptation of new biomarkers enabling the identification of different genes as well as single-nucleotide-polymorphisms (SNPs) within these genes. In this protocol we describe a DNA microarray developed for identification of Staphylococcus aureus and the mecA resistance gene.

  19. co_LAB @ Web We Want

    OpenAIRE

    Thayne, Martyn; Cooper, Graham; Field, James; McCarthy, Clive; Vickers, Richard; Lawlor, Louise; West, Andrew

    2015-01-01

    co_LAB projects typically involve working with interdisciplinary groups of students, using discovery-based learning methods to explore questions, concerns and issues within digital culture and the incorporation of digital media into aspects of everyday life. Most recently the group participated in the 'Web We Want Festival' at the Southbank Arts Centre in London, which was part of Sir Tim Berners-Lee's campaign to develop a 'Magna Carta for the digital age'. In the week leading up to the fest...

  20. LAB bacteriocin applications in the last decade

    OpenAIRE

    Ma. del Rocío López-Cuellar; Adriana-Inés Rodríguez-Hernández; Norberto Chavarría-Hernández

    2016-01-01

    In the early 2000s, the expectations about bacteriocins produced by lactic acid bacteria (LABs) were aimed at food applications. However, the effectiveness of bacteriocins against undesirable micro-organisms opened endless possibilities for innovative research. In the present review, we collected a database including 429 published papers and 245 granted patents (from 2004 to 2015). Based on bibliometric analysis, the progress of bacteriocin research in the last 11 years was discussed in detai...

  1. Report to Lincoln Labs on TWPAs

    Energy Technology Data Exchange (ETDEWEB)

    Dubois, J. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Carosi, G. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Woollett, N. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Holland, E. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Horsley, M. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Qu, D. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Materise, N. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Drury, O. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Chapline, G. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Friedrich, S. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

    2017-09-26

    This past spring LLNL’s Quantum Sensor’s team received two TWPA amplifiers from Lincoln Labs along with a data-sheet explaining handling, operations and expected performance. Here we will outline some of the initial tests performed on this amplifiers as part of LLNL’s Quantum Sensors Strategic Initiative (QSSI). Initial testing confirmed that both amplifiers worked and provided gain and SNR improvement similar to that called out in the data-sheets provided.

  2. Berkeley's Advanced Labs for Undergraduate Astronomy Majors

    Science.gov (United States)

    Heiles, C.

    1998-12-01

    We currently offer three advanced laboratory courses for undergraduate majors: optical, IR, and radio. These courses contain both intellectual and practical content; in this talk we focus on the radio lab as a representative example. The first half of the semester concentrates on fundamentals of microwave electronics and radio astronomy techniques in four formal laboratory exercises which emphasize hands-on use of microwave devices, laboratory instruments, and computer-controlled data taking. The second half of the course emphasizes astronomy, using a horn with ~ 1 m(2) aperture to map the HI in the Galaxy and a two-element interferometer composed of ~ 1 m diameter dishes on a ~ 10 m baseline to measure accurate positions of radio sources and accurate diameters for the Sun and Moon. These experiments and observations offer ideal opportunities for teaching coordinates, time, rotation matrices, data reduction techniques, least squares, signal processing, image processing, Fourier transforms, and laboratory and astronomical instrumentation. The students can't get along without using computers as actually used by astronomers. We stay away from packaged software such as IRAF, which are ``black boxes''; rather, students learn far more by writing their own software, usually for the first time. They use the IDL language to take and reduce data and prepare them for the lab reports. We insist on quality reports---including tables, postscript graphs and images, correct grammar, spelling, and all the rest---and we strongly urge (successfully!) the students to use LATEX. The other two lab courses have the same emphasis: the guiding spirit is to place the students in a real-life research-like situation. There is too much to do, so students perform the work in small groups of 3 or 4 and groups are encouraged to share their knowledge. Lab reports are written individually. These courses are very demanding, requiring an average of 20 hours per week from the students (and probably

  3. Berkeley Lab Computing Sciences: Accelerating Scientific Discovery

    International Nuclear Information System (INIS)

    Hules, John A.

    2008-01-01

    Scientists today rely on advances in computer science, mathematics, and computational science, as well as large-scale computing and networking facilities, to increase our understanding of ourselves, our planet, and our universe. Berkeley Lab's Computing Sciences organization researches, develops, and deploys new tools and technologies to meet these needs and to advance research in such areas as global climate change, combustion, fusion energy, nanotechnology, biology, and astrophysics

  4. Mercado metropolitano de trabajo y desigualdades sociales en el Gran Santiago: ¿Una ciudad dual?

    Directory of Open Access Journals (Sweden)

    Carlos A. de Mattos

    2002-12-01

    Full Text Available Los cambios estructurales en los mercados metropolitanos de trabajo bajo los procesos de reestructuración-informacionalización-globalización, se han situado como un tema central para el estudio de la transformación de las ciudades durante las últimas décadas. Desde esta perspectiva, el presente trabajo analiza los impactos que los procesos de modernización capitalista en Chile han tenido sobre su mercado de trabajo y sobre la evolución de la distribución del ingreso, y sobre esta base, observa sus efectos sobre la estructuración socio-territorial del Gran Santiago, discutiendo especialmente la pertinencia de la tesis de la dualización para este caso particular. Para ello, en una primera parte se esbozan los rasgos fundamentales de esta tesis, se analizan los fundamentos con los que ha sido presentada y las causas que se le atribuyen. En la segunda parte se revisan las principales transformaciones producidas en esta fase de modernización capitalista en Chile, y la evolución de las desigualdades sociales y la segregación urbana en el Gran Santiago a la luz de las transformaciones producidas en su mercado de trabajo. En la tercera y última parte, se plantea la discusión sobre la aplicabilidad de la tesis de la dualización al caso chilenoStructural changes in metropolitan labour markets under the process of reestructutration-informationalization-globalization, had become a central issue for the study of the transformation of the cities during the last decades. According to this perspective, this article analizes the impacts that the capitalist modernization in Chile has had on their labor market and the evolution of income distribution, and upon this base, observes their effects on socio-territorial estructuration of the Great Santiago, specially discussing the pertinence of the dualization theory for this particular case. For that, main characteristics of this theory are drawn; at the same time, the basis with that has been

  5. Tele-Lab IT-Security: an Architecture for an online virtual IT Security Lab

    Directory of Open Access Journals (Sweden)

    Christoph Meinel

    2008-05-01

    Full Text Available Recently, Awareness Creation in terms of IT security has become a big thing – not only for enterprises. Campaigns for pupils try to highlight the importance of IT security even in the user’s early years. Common practices in security education – as seen in computer science courses at universities – mainly consist of literature and lecturing. In the best case, the teaching facility offers practical courses in a dedicated isolated computer lab. Additionally, there are some more or less interactive e-learning applications around. Most existing offers can do nothing more than impart theoretical knowledge or basic information. They all lack of possibilities to provide practical experience with security software or even hacker tools in a realistic environment. The only exceptions are the expensive and hard-to-maintain dedicated computer security labs. Those can only be provided by very few organizations. Tele-Lab IT-Security was designed to offer hands-on experience exercises in IT security without the need of additional hardware or maintenance expenses. The existing implementation of Tele-Lab even provides access to the learning environment over the Internet – and thus can be used anytime and anywhere. The present paper describes the extended architecture on which the current version of the Tele-Lab server is built.

  6. CERN neutrino project on target

    CERN Multimedia

    2005-01-01

    Scientists at CERN announced the completion of the target assembly for the CERN neutrinos to Gran Sasso project, CNGS. On schedule for start-up in May 2006, CNGS will send a beam of neutrinos through the Earth to the Gran Sasso laboratory 730 km away in Italy in a bid to unravel the mysteries of nature's most elusive particles (½ page)

  7. Horn installed in CNGS tunnel

    CERN Multimedia

    Maximilien Brice

    2005-01-01

    The horn is installed for the CERN Neutrinos to Gran Sasso (CNGS) project. Protons collide with a graphite target producing charged particles that are focussed by the magnetic field in the horn. These particles will then pass into a decay tube where they decay into neutrinos, which travel towards a detector at Gran Sasso 732 km away in Italy.

  8. Discovery Mondays - Neutrinos: journeying with the phantom particles

    CERN Multimedia

    2006-01-01

    There was a record attendance at the last Discovery Monday! Neutrinos and the CNGS facility (CERN Neutrinos to Gran Sasso). There was a record attendance at the last Discovery Monday! Neutrinos and the CNGS facility (CERN Neutrinos to Gran Sasso). A dozen physicists and engineers were stationed at six stands with models and posters.

  9. Land-use policies and corporate investments in agriculture in the Gran Chaco and Chiquitano

    Science.gov (United States)

    le Polain de Waroux, Yann; Garrett, Rachael D.; Heilmayr, Robert; Lambin, Eric F.

    2016-01-01

    Growing demand for agricultural commodities is causing the expansion of agricultural frontiers onto native vegetation worldwide. Agribusiness companies linking these frontiers to distant spaces of consumption through global commodity chains increasingly make zero-deforestation pledges. However, production and land conversion are often carried out by less-visible local and regional actors that are mobile and responsive to new agricultural expansion opportunities and legal constraints on land use. With more stringent deforestation regulations in some countries, we ask whether their movements are determined partly by differences in land-use policies, resulting in “deforestation havens.” We analyze the determinants of investment decisions by agricultural companies in the Gran Chaco and Chiquitano, a region that has become the new deforestation “hot spot” in South America. We test whether companies seek out less-regulated forest areas for new agricultural investments. Based on interviews with 82 companies totaling 2.5 Mha of properties, we show that, in addition to proximity to current investments and the availability of cheap forestland, lower deforestation regulations attract investments by companies that tend to clear more forest, mostly cattle ranching operations, and that lower enforcement attracts all companies. Avoiding deforestation leakage requires harmonizing deforestation regulations across regions and commodities and promoting sustainable intensification in cattle ranching. PMID:27035995

  10. Early Pliocene fishes (Chondrichthyes, Osteichthyes) from Gran Canaria and Fuerteventura (Canary Islands, Spain)

    Energy Technology Data Exchange (ETDEWEB)

    Betancort, J.F.; Lomoschitz, A.; Meco, J.

    2016-07-01

    Fossil fish teeth are contained in marine deposits dated at ca 4.8 Ma found on the islands of Gran Canaria and Fuerteventura (Canary Islands, Spain). These islands, situated in the North Atlantic Subtropical Gyre, can be considered a mid-way stopover point between the Caribbean Sea, with the Central American Seaway about to close in this epoch, and the Mediterranean, in the first stage of its post-Messinian Gibraltar Seaway period. Accordingly, there existed extensive pantropical communication, particularly for nektonic animals capable of travelling large distances. In this paper, we present a number of fossil fishes, most of which are identified for the first time on the basis of their teeth: the Chondrichthyes species Carcharocles megalodon, Parotodus benedeni, Cosmopolitodus hastalis, Isurus oxyrinchus, Carcharias cf. acutissima, Carcharhinus cf. leucas, Carcharhinus cf. priscus, Galeocerdo cf. aduncus, and the Osteichthyes species Archosargus cinctus, Labrodon pavimentatum, and Diodon scillae. Coincidences are observed between these ichthyofauna and specimens found in the Azores Islands, the Pacific coast of America and the Mediterranean Sea. (Author)

  11. Early Pliocene fishes (Chondrichthyes, Osteichthyes) from Gran Canaria and Fuerteventura (Canary Islands, Spain)

    International Nuclear Information System (INIS)

    Betancort, J.F.; Lomoschitz, A.; Meco, J.

    2016-01-01

    Fossil fish teeth are contained in marine deposits dated at ca 4.8 Ma found on the islands of Gran Canaria and Fuerteventura (Canary Islands, Spain). These islands, situated in the North Atlantic Subtropical Gyre, can be considered a mid-way stopover point between the Caribbean Sea, with the Central American Seaway about to close in this epoch, and the Mediterranean, in the first stage of its post-Messinian Gibraltar Seaway period. Accordingly, there existed extensive pantropical communication, particularly for nektonic animals capable of travelling large distances. In this paper, we present a number of fossil fishes, most of which are identified for the first time on the basis of their teeth: the Chondrichthyes species Carcharocles megalodon, Parotodus benedeni, Cosmopolitodus hastalis, Isurus oxyrinchus, Carcharias cf. acutissima, Carcharhinus cf. leucas, Carcharhinus cf. priscus, Galeocerdo cf. aduncus, and the Osteichthyes species Archosargus cinctus, Labrodon pavimentatum, and Diodon scillae. Coincidences are observed between these ichthyofauna and specimens found in the Azores Islands, the Pacific coast of America and the Mediterranean Sea. (Author)

  12. Early Pliocene fishes (Chondrichthyes, Osteichthyes from Gran Canaria and Fuerteventura (Canary Islands, Spain

    Directory of Open Access Journals (Sweden)

    J. F. Betancort

    2016-11-01

    Full Text Available Fossil fish teeth are contained in marine deposits dated at ca 4.8 Ma found on the islands of Gran Canaria and Fuerteventura (Canary Islands, Spain. These islands, situated in the North Atlantic Subtropical Gyre, can be considered a mid-way stopover point between the Caribbean Sea, with the Central American Seaway about to close in this epoch, and the Mediterranean, in the first stage of its post-Messinian Gibraltar Seaway period. Accordingly, there existed extensive pantropical communication, particularly for nektonic animals capable of travelling large distances. In this paper, we present a number of fossil fishes, most of which are identified for the first time on the basis of their teeth: the Chondrichthyes species Carcharocles megalodon, Parotodus benedeni, Cosmopolitodus hastalis, Isurus oxyrinchus, Carcharias cf. acutissima, Carcharhinus cf. leucas, Carcharhinus cf. priscus, Galeocerdo cf. aduncus, and the Osteichthyes species Archosargus cinctus, Labrodon pavimentatum, and Diodon scillae. Coincidences are observed between these ichthyofauna and specimens found in the Azores Islands, the Pacific coast of America and the Mediterranean Sea.

  13. Massive decline of Cystoseira abies-marina forests in Gran Canaria Island (Canary Islands, eastern Atlantic

    Directory of Open Access Journals (Sweden)

    José Valdazo

    2017-12-01

    Full Text Available Brown macroalgae within the genus Cystoseira are some of the most relevant “ecosystem-engineers” found throughout the Mediterranean and the adjacent Atlantic coasts. Cystoseira-dominated assemblages are sensitive to anthropogenic pressures, and historical declines have been reported from some regions. In particular, Cystoseira abies-marina, thriving on shallow rocky shores, is a key species for the ecosystems of the Canary Islands. In this work, we analyse changes in the distribution and extension of C. abies-marina in the last decades on the island of Gran Canaria. This alga dominated the shallow rocky shores of the entire island in the 1980s; a continuous belt extended along 120.5 km of the coastline and occupied 928 ha. In the first decade of the 21st century, fragmented populations were found along 52.2 km of the coastline and occupied 12.6 ha. Today, this species is found along 37.8 km of the coastline and occupies only 7.4 ha, mainly as scattered patches. This regression has been drastic around the whole island, even in areas with low anthropogenic pressure; the magnitude of the decline over time and the intensity of local human impacts have not shown a significant correlation. This study highlights a real need to implement conservation and restoration policies for C. abies-marina in this region.

  14. Las configuraciones sociales de la crianza en barrios populares del Gran Buenos Aires

    Directory of Open Access Journals (Sweden)

    Laura Santillán

    2010-01-01

    Full Text Available En este artículo propongo una exploración antropológica sobre la crianza y la educación infantil en contextos de desigualdad social. El interés es discutir una serie de supuestos que suelen limitar las prácticas educativas de los sectores subalternos a "pautas tradicionales" y "privativas del mundo familiar". Sin embargo, en las iniciativas domésticas sobre la crianza y el cuidado infantil que analizo, intervienen actores esperables para ello y también un conjunto de sujetos e instituciones no formalizadas pero que se tornan relevantes en la cotidianeidad de los territorios de pertenencia de los niños y niñas. Para el análisis me basaré en las entrevistas y en los registros de tipo etnográfico que llevé a cabo en asentamientos ubicados en la zona norte del Gran Buenos Aires, Argentina.

  15. Mensaje y audiencias: el programa Gran Hermano. El sueño de Orwell

    Directory of Open Access Journals (Sweden)

    Carmen Fernández Torres, Bárbara González Atienza, Esther Menacho Dorado, Luisa Noguera y Antonio Rossi - Coordinación: Dr. Ramón Reig

    2001-01-01

    Full Text Available Este trabajo analiza el formato televisivo del programa Gran Hermano, emitido entre abril y junio de 2000. La finalidad de esta investigación está relacionada con la detección de los elementos formales que convierten un espacio en un producto de éxito, así como la respuesta que puede generar en los telespectadores. La vivienda artificial enclavada en las proximidades de Soto del Real (Madrid se convirtió en una ventana que abría la vida cotidiana del prójimo a la curiosidad de millones de hogares. Este experimento televisivo, que no científico, es la excusa programada por un complejo financiero de cifras y letras que marcó un precedente en la historia de la pequeña pantalla. La filosofía del liberalismo mediático limita en unas reglas donde la intimidad forma parte del mercado. Ahora, la demanda televisiva se vende en un "mercado" orquestado por las emociones.ABSTRACTThis article analyses the elements from the Big Brother's broadcast, the TV program emited from April to June in Telecinco. The purpose of this research is explaining the key points of these production an their influence over the audience. The artificial house created for this play seems a window where people look their neighbour's life. Big Brother's experience supposes a way from th media's liberalism, because it opens a commercial behaviour that is based in emotions.

  16. La Gran Guerra y sus impactos locales. Rosario, Argentina 1914-1920

    Directory of Open Access Journals (Sweden)

    Cecilia M. Pascual

    2015-07-01

    Full Text Available Este artículo aborda el impacto de la Gran Guerra en la ciudad de Rosario, Argentina. Releva sus impactos económicos y los significados que se les asignaron. Analiza las formas en que los actores sociales intentaron hacer frente a los efectos críticos del conflicto mundial: encarecimiento de los productos primarios, desabastecimiento y desocupación. En este campo resultan importantes la producción de ferias francas, la construcción de mercados municipales y el abasto directo de productos primarios por parte del municipio. Ante la dimensión y duración del paro, las autoridades comenzaron a tejer nuevas estrategias para intervenir sobre este fenómeno. Se observa una transición de unas estrategias gubernamentales basadas en la represión y la segregación a otras emparentadas con la asistencia y la ayuda social. Si bien estas nuevas herramientas de intervención no tendieron a perdurar y manifestaron su carácter coyuntural y paliativo, una vez superada la crisis, hacia mediados de los años 1920, organizaron el debate sobre la producción de nuevas políticas municipales y del reformismo local.

  17. Contrasting recruitment seasonality of sea urchin species in Gran Canaria, Canary Islands (eastern Atlantic

    Directory of Open Access Journals (Sweden)

    S. GARCIA-SANZ

    2014-03-01

    Full Text Available Despite sea-urchins can play an important role affecting the community structure of subtidal bottoms, factors controlling the dynamics of sea-urchin populations are still poorly understood. We assessed the seasonal variation in recruitment of three sea-urchin species (Diadema africanum, Paracentrotus lividus and Arbacia lixula at Gran Canaria Island (eastern Atlantic via monthly deployment of artificial collectors throughout an entire annual cycle on each of four adjacent habitat patches (seagrasses, sandy patches, ‘urchin-grazed’ barrens and macroalgal-dominated beds within a shallow coastal landscape. Paracentrotus lividus and A. lixula had exclusively one main recruitment peak in late winter-spring. Diadema africanum recruitment was also seasonal, but recruits appeared in late summer-autumn, particularly on ‘urchin-grazed’ barrens with large abundances of adult conspecifics. In conclusion, this study has demonstrated non-overlapping seasonal recruitment patterns of the less abundant species (P. lividus and A. lixula with the most conspicuous species (D. africanum in the study area.

  18. Disease survey of free-ranging grey brocket deer (Mazama gouazoubira) in the Gran Chaco, Bolivia.

    Science.gov (United States)

    Deem, Sharon L; Noss, Andrew J; Villarroel, Richard; Uhart, Marcela M; Karesh, William B

    2004-01-01

    Samples from 17 free-ranging hunter-killed grey brocket deer (Mazama gouazoubira) in the Gran Chaco, Bolivia, were collected during June-August 1999. All 17 deer appeared to be in good condition at the time of death. Gross necropsies were performed, serum was collected for serologic evaluation of selected infectious disease agents, and feces and ectoparasites were collected for evaluation of internal and external parasites. Serologic tests were positive for antibodies against bovine respiratory syncytial virus and four Leptospira interrogans serovars, with questionable results for epizootic hemorrhagic disease virus serotypes 1 and 2. No antibodies were detected to Anaplasma marginale, Babesia bigemina, Babesia bovis, Babesia odocoilei, bluetongue virus (serotypes 2, 10, 11, 13, and 17), bovine viral diarrhea virus, Brucella abortus, foot-and-mouth disease virus, infectious bovine rhinotracheitis virus, Mycobacterium avium subsp. paratuberculosis, and parainfluenza-3 virus. Sixty-four percent (7/11) of the deer had endoparasites. Amblyomma spp. ticks were found on seven deer, flies of the family Hippoboscidae on six deer, and lice on six deer.

  19. IMPLICACIONES TERRITORIALES DE UNA GRAN OBRA HIDRÁULICA: EL EMBALSE DEL TRANCO (CABECERA DEL GUADALQUIVIR

    Directory of Open Access Journals (Sweden)

    Eduardo Araque Jiménez

    2012-01-01

    Full Text Available Situado en la cabecera del Guadalquivir, el embalse del Tranco fue durante muchos años el de mayor capacidad de almacenamiento de agua de toda Andalucía. Sus aportaciones resultaron fundamentales para el sostenimiento del regadío en el gran valle bético, al tiempo que con sus aguas pudo generarse una parte de la energía eléctrica que se precisaba para la modernización del aparato productivo andaluz y la mejora de las condiciones de vida en multitud de hogares en el valle del Guadalquivir. Frente a estas perspectivas tan halagüeñas, las aguas embalsadas en el Tranco apenas tuvieron repercusiones socioeconómicas positivas para la Sierra de Segura. Las expropiaciones masivas a las que dio origen tanto la construcción del embalse como la repoblación forestal que lo acompañó, propiciaron la emigración masiva de centenares de vecinos, muchas veces en condiciones de extrema precariedad. Por otro lado, las aguas del Tranco nunca se utilizaron para la expansión del regadío por algunos de los fértiles valles próximos al embalse, ni la electricidad generada a pie de presa llegó a los hogares serranos, que siguieron careciendo de este servicio durante muchos años.

  20. DIMENSIÓN ESPACIAL DE LA MOVILIDAD COTIDIANA UNIVERSITARIA: EL CASO DEL GRAN VALPARAÍSO

    Directory of Open Access Journals (Sweden)

    Marcela Soto C.

    2009-01-01

    Full Text Available Este trabajo obedece a la necesidad de conocer los patrones de movilidad cotidiana universitaria desde los lugares de residencia hacia el campus universitario y como estos han ido cambiando debido a la creciente infl uencia en las dinámicas de cambio del contexto urbano metropolitano del Gran Valparaíso. Estas dinámicas de cambios se caracterizan por desequilibrios funcionales al interior de la estructura metropolitana, y a un incremento sustantivo en la accesibilidad global producto de programas de inversión en infraestructura vial en sus principales corredores de transporte, llevando a desarrollos urbanos desiguales y crecientes. Estos cambios vistos desde una comunidad móvil específica como es el habitante universitario, nos permite visualizar nuevas tendencias de movilidad, asociadas a un modelo más centrífugo que "externaliza" crecientemente la residencia de los alumnos hacia el contexto urbano metropolitano, cuyas consecuencias sociales y urbano-ambientales pretende develar la investigación.

  1. Precios inflexibles y la gran depresión Inflexible prices and the great depression

    Directory of Open Access Journals (Sweden)

    Lee Frederick S.

    2000-06-01

    Full Text Available Este articulo expone la teoria y la tesis de precios administrados de Gardiner Means, analiza sus efectos sobre la gran depresion y presenta las criticas y propuestas de los defensores de la teoria neoclasica. Revisa empiricamente la propuesta de Means y señala sus limitaciones y verdaderos alcances. Por ultimo, muestra que si la tesis Means y las propuestas Keynesianas se hubiesen unido en 1940, la sintesis resultante habria dado lugar a una teoria coherente, con solidos funadamentos empiricos, alternativa a la teoria neoclasica tradicional.This article presents Gardiner Means' theory and thesis of administeredprices, analyzes their effects on the Great Depression, andpresents the critiques and proposals of the defenders of Neoclassical Theory. It reviews Means' proposal empirically, and indicates its limitations as well as its real significance. Finally, it shows thatif the Means thesis and Keynesian proposals had been joined togetherin 1940, the resulting synthesis would have provided a coherent alternative to traditional Neoclassical Theory with solid empirical foundations.

  2. The Dynamics and Facilitation of a Living Lab Construct

    DEFF Research Database (Denmark)

    Brønnum, Louise; Nielsen, Louise Møller

    2013-01-01

    During the last decade Living Labs have established itself as an attractive innovation approach. Living Labs are an interesting construction because it offers a collaboration platform for dynamic interaction with users in all the project phases. Living Labs frame knowledge about actors in their own...... settings, in which new opportunities for innovation can be discovered. However, the practical management of a Living Lab is often a great challenge. It involves managing several actors, who are working with different agendas and within very different development traditions. The managing of a Living Lab...... and the different actors, processes and methods are therefore interesting to put into perspective as it contains opportunities for staging a well‐functioning Living Lab. This paper contributes to unfolding and discussing some of the main challenges in managing a Living Lab while keeping the different actors engaged...

  3. Beyond Classroom, Lab, Studio and Field

    Science.gov (United States)

    Waller, J. L.; Brey, J. A.; DeMuynck, E.; Weglarz, T. C.

    2017-12-01

    When the arts work in tandem with the sciences, the insights of these disciplines can be easily shared and teaching and learning are enriched. Our shared experiences in classroom/lab/studio instruction and in art and science based exhibitions reward all involved. Our individual disciplines cover a wide range of content- Art, Biology, Geography, Geology- yet we connect on aspects that link to the others'. We easily move from lab to studio and back again as we teach—as do our students as they learn! Art and science education can take place outside labs and studios through study abroad, international workshops, museum or gallery spaces, and in forums like the National Academies' programs. We can reach our neighbors at local public gatherings, nature centers and libraries. Our reach is extended in printed publications and in conferences. We will describe some of our activities listed above, with special focus on exhibitions: "Layers: Places in Peril"; "small problems, BIG TROUBLE" and the in-progress "River Bookends: Headwaters, Delta and the Volume of Stories In Between". Through these, learning and edification take place between the show and gallery visitors and is extended via class visits and related assignments, field trips for child and adult learners, interviews, films and panel presentations. These exhibitions offer the important opportunities for exhibit- participating scientists to find common ground with each other about their varied work. We will highlight a recent collaborative show opening a new university-based environmental research center and the rewarding activities there with art and science students and professors. We will talk about the learning enhancement added through a project that brought together a physical geography and a painting class. We will explore how students shared the form and content of their research projects with each other and then, became the educators through paintings and text of their geoscience topics on gallery walls.

  4. E-Labs - Learning with Authentic Data

    Energy Technology Data Exchange (ETDEWEB)

    Bardeen, Marjorie G. [Fermilab; Wayne, Mitchell [Notre Dame U.

    2016-01-01

    the success teachers have had providing an opportunity for students to: • Organize and conduct authentic research. • Experience the environment of scientific collaborations. • Possibly make real contributions to a burgeoning scientific field. We've created projects that are problem-based, student driven and technology dependent. Students reach beyond classroom walls to explore data with other students and experts and share results, publishing original work to a worldwide audience. Students can discover and extend the research of other students, modeling the processes of modern, large-scale research projects. From start to finish e-Labs are student-led, teacher-guided projects. Students need only a Web browser to access computing techniques employed by professional researchers. A Project Map with milestones allows students to set the research plan rather than follow a step-by-step process common in other online projects. Most importantly, e-Labs build the learning experience around the students' own questions and let them use the very tools that scientists use. Students contribute to and access shared data, most derived from professional research databases. They use common analysis tools, store their work and use metadata to discover, replicate and confirm the research of others. This is where real scientific collaboration begins. Using online tools, students correspond with other research groups, post comments and questions, prepare summary reports, and in general participate in the part of scientific research that is often left out of classroom experiments. Teaching tools such as student and teacher logbooks, pre- and post-tests and an assessment rubric aligned with learner outcomes help teachers guide student work. Constraints on interface designs and administrative tools such as registration databases give teachers the "one-stop-shopping" they seek for multiple e-Labs. Teaching and administrative tools also allow us to track usage and assess the

  5. Charpy V, an application in Mat lab

    International Nuclear Information System (INIS)

    Castillo M, J.A.; Torres V, M.

    2003-01-01

    The obtained results with the system Charpy V V 1 designed in Mat lab for the estimate of parameters of three mathematical models are shown. The adjustment of data is used to determine the fracture energy, the lateral expansion and the percentage of ductility of steels coming from the reactor vessels of Laguna Verde, Veracruz. The data come from test tubes type Charpy V of irradiated material and not irradiated. To verify our results they were compared with those obtained by General Electric of data coming from the Laguna Verde nuclear power plant. (Author)

  6. CompTIA Network+ Lab Manual

    CERN Document Server

    Skandier, Toby

    2012-01-01

    Gain street-smart skills in network administration Think of the most common and challenging tasks that network administrators face, then read this book and find out how to perform those tasks, step by step. CompTIA Network + Lab Manual provides an inside look into the field of network administration as though you were actually on the job. You'll find a variety of scenarios and potential roadblocks, as well as clearly mapped sections to help you prepare for the CompTIA Network+ Exam N10-005. Learn how to design, implement, configure, maintain, secure, and troubleshoot a network with this street

  7. DOSAR/CalLab Operations Manual

    Energy Technology Data Exchange (ETDEWEB)

    Bogard, J.S.

    2000-03-01

    The Life Sciences Division (LSD) of Oak Ridge National Laboratory (ORNL) has a long record of radiation dosimetry research, primarily using the Health Physics Research Reactor (HPRR) and the Dosimetry Applications Research (DOSAR) Program Calibration Laboratory (CalLab), referred to formerly as the Radiation Calibration Laboratory. These facilities have been used by a broad segment of the research community to perform a variety of experiments in areas including, but not limited to, radiobiology, radiation dosimeter and instrumentation development and calibration, and the testing of materials in a variety of radiation environments.

  8. Comparative genomics of Lactobacillus and other LAB

    DEFF Research Database (Denmark)

    Wassenaar, Trudy M.; Lukjancenko, Oksana

    2014-01-01

    The genomes of 66 LABs, belonging to five different genera, were compared for genome size and gene content. The analyzed genomes included 37 Lactobacillus genomes of 17 species, six Lactococcus lactis genomes, four Leuconostoc genomes of three species, six Streptococcus genomes of two species...... that of the others, with the two Streptococcus species having the shortest genomes. The widest distribution in genome content was observed for Lactobacillus. The number of tRNA and rRNA gene copies varied considerably, with exceptional high numbers observed for Lb. delbrueckii, while these numbers were relatively...

  9. Quark Hadron Duality - Recent Jefferson Lab Results

    Energy Technology Data Exchange (ETDEWEB)

    Niculescu, Maria Ioana [James Madison Univ., Harrisonburg, VA (United States); Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)

    2016-08-01

    The duality between the partonic and hadronic descriptions of electron--nucleon scattering is a remarkable feature of nuclear interactions. When averaged over appropriate energy intervals the cross section at low energy which is dominated by nucleon resonances resembles the smooth behavior expected from perturbative QCD. Recent Jefferson Lab results indicate that quark-hadron duality is present in a variety of observables, not just the proton F2 structure function. An overview of recent results, especially local quark-hadron duality on the neutron, are presented here.

  10. Time correlations of high energy muons in an underground detector

    CERN Document Server

    Becherini, Y; Chiarusi, T; Cozzi, M; Dekhissi, H; Derkaoui, J; Esposito, L S; Giacomelli, G; Giglietto, N; Giorgini, M; Maaroufi, F; Mandrioli, G; Manzoor, S; Margiotta, A; Moussa, A

    2005-01-01

    We present the result of a search for correlations in the arrival times of high energy muons collected from 1995 till 2000 with the streamer tube system of the complete MACRO detector at the underground Gran Sasso Lab. Large samples of single muons (8.6 million), double muons (0.46 million) and multiple muons with multiplicities from 3 to 6 (0.08 million) were selected. These samples were used to search for time correlations of cosmic ray particles coming from the whole upper hemisphere or from selected space cones. The results of our analyses confirm with high statistics a random arrival time distribution of high energy cosmic rays.

  11. A fast automatic plate changer for the analysis of nuclear emulsions

    Science.gov (United States)

    Balestra, S.; Bertolin, A.; Bozza, C.; Calligola, P.; Cerroni, R.; D'Ambrosio, N.; Degli Esposti, L.; De Lellis, G.; De Serio, M.; Di Capua, F.; Di Crescenzo, A.; Di Ferdinando, D.; Di Marco, N.; Dusini, S.; Esposito, L. S.; Fini, R. A.; Giacomelli, G.; Giacomelli, R.; Grella, G.; Ieva, M.; Kose, U.; Longhin, A.; Mandrioli, G.; Mauri, N.; Medinaceli, E.; Monacelli, P.; Muciaccia, M. T.; Pasqualini, L.; Pastore, A.; Patrizii, L.; Pozzato, M.; Pupilli, F.; Rescigno, R.; Rosa, G.; Ruggieri, A.; Russo, A.; Sahnoun, Z.; Simone, S.; Sioli, M.; Sirignano, C.; Sirri, G.; Stellacci, S. M.; Strolin, P.; Tenti, M.; Tioukov, V.; Togo, V.; Valieri, C.

    2013-07-01

    This paper describes the design and performance of a computer controlled emulsion Plate Changer for the automatic placement and removal of nuclear emulsion films for the European Scanning System microscopes. The Plate Changer is used for mass scanning and measurement of the emulsions of the OPERA neutrino oscillation experiment at the Gran Sasso lab on the CNGS neutrino beam. Unlike other systems it works with both dry and oil objectives. The film changing takes less than 20 s and the accuracy on the positioning of the emulsion films is about 10 μm. The final accuracy in retrieving track coordinates after fiducial marks measurement is better than 1 μm.

  12. “La posición de la Gran Logia de la Isla de Cuba ante la crisis de 1929 a 1933: su reflejo en la revista La Gran Logia”

    Directory of Open Access Journals (Sweden)

    Haens Beltrán Alonso

    2012-01-01

    Full Text Available La Gran Logia de la Isla de Cuba, principal organismo simbólico de la masonería cubana sufrió durante los años 1929-1933 la grave crisis que afectó a la sociedad cubana. El presente trabajo aborda el posicionamiento de este gobierno masónico ante la situación política, utilizando como fuente fundamental los planteamientos vertidos en su órgano de prensa oficial la revista La Gran Logia. Se parte de la premisa de que la masonería no es una institución política, pero que su funcionamiento la obliga a adoptar una posición ante los problemas que la afectan. ¿Cuál fue la posición de la Gran Logia de la Isla de Cuba sobre la crisis imperante? ¿Cómo expresó su posición sin violar los preceptos masónicos de no discutir sobre política? Estas son las preguntas que en este trabajo se pretenden responder.

  13. A seismic waves velocity model for Gran Canaria Island from ambient noise correlations

    Science.gov (United States)

    García-Jerez, Antonio; Almendros, Javier; Martínez-Arévalo, Carmen; de Lis Mancilla, Flor; Luzón, Francisco; Carmona, Enrique; Martín, Rosa; Sánchez, Nieves

    2014-05-01

    We have analysed continuous ambient seismic noise recorded by a temporary array in Gran Canaria (Canary Islands, Spain) in order to find a velocity model for the top few kilometers. The SISTEVOTENCAN-IGN seismic array consisted of five broadband stations surrounding a sixth central one placed close to Pico de las Nieves, at the center of the island. The array had a radius of 12-14 km, with interstation distances ranging from 10 to 27 km. This network was operative from December 2009 to November 2011. The Green's functions between the 15 pairs of stations have been estimated in the time domain by stacking cross-correlations of 60-s time windows for the whole recording period (~2 years). The effects of several processing adjustments such as 1-bit normalization and spectral whitening are discussed. We observe significant differences (mainly in amplitude) between causal and acausal parts of the estimated Green's functions, which can be associated to an uneven distribution of the seismic noise sources. The application of a phase-matched filter based on an average dispersion curve allowed the effective reduction of some spurious early arrivals and the selection of fundamental-mode Rayleigh wave pulses, making possible an automatic extraction of their group velocities. Then, Rayleigh-wave dispersion curves were retrieved for the set of paths by using frequency-time analysis (FTAN) as well as by following the procedure described by Herrin and Goforth (1977, BSSA) based on the iterative fitting of a phase-matched filter which optimally undisperses the signal. Reliable curves were obtained from 1 s to 6-7 s with group velocities ranging between 1.5 and 2.2 km/s. Some lateral variations in velocity have been detected in spite of the limited spatial coverage and path density, which substantially restricted the resolution. A mean S-wave velocity model has been inverted for this area down to ~3 km.

  14. Origen de la gran industria en la comarca del Campo de Gibraltar

    Directory of Open Access Journals (Sweden)

    María José Foncubierta Rodríguez

    2010-11-01

    Full Text Available Cuando en la década de los sesenta se pusieron en marcha los Planes Nacionales de Desarrollo, la comarca del Campo de Gibraltar vivía una situación de pobreza y de analfabetismo, caracterizada por la servidumbre de su población al uso militar de gran parte de su territorio, y a la presencia de la colonia británica de Gibraltar. La calificación como Zona de Preferente Localización Industrial, hizo que en el Arco de la Bahía de Algeciras se instalara un conjunto de grandes empresas que han transformado sensiblemente la comarca, en términos de empleo, económicos e incluso de cualificación de los ciudadanos. Palabras-clave: Grandes industrias, Campo de Gibraltar, Planes de Desarrollo, Bahía de Algeciras.___________________________ABSTRACT:When in the sixties are launched the National Development Plans, in order to avoid regional imbalance, the region of Campo de Gibraltar suffered a socio-economic situation of poverty and illiteracy, which was characterized by the easement to military use of its territory, and the presence of the British colony of Gibraltar. Its classification as Industrial Location Preferred Zone was the cause of a set of large companies to be installed at the Bay of Algeciras, which have significantly transformed the situation in this area, in terms of employment, economy, and even their people´s qualification.Keywords: Large industries, Campo de Gibraltar, Development Plans, Bay of Algeciras

  15. El gran milagro... Todavía=The Great Miracle… As Yet

    Directory of Open Access Journals (Sweden)

    Paquita Suárez Coalla

    2017-06-01

    Full Text Available Resumen Este texto plantea una reflexión personal sobre las múltiples contradicciones y desafíos que la institución y la experiencia de la maternidad plantean a las mujeres, considerando un contexto muy específico: la academia norteamericana, a la que llegué como inmigrante privilegiada desde España. Si la práctica de la co-maternidad aparece en ciertos discursos como garante de la solidaridad entre las mujeres, otros factores como la raza, la clase o las puras circunstancias individuales, modulan nuestras vidas como mujeres, trabajadoras y madres. En cualquier caso, en nuestras sociedades desarrolladas e hiper-competitivas, solo gracias a las redes de apoyo formales o informales entre mujeres y a una voluntad decidida de involucrare en la crianza de l@s hij@s por parte de nuestras parejas garantiza que la experiencia de ser madres pueda ser vivida como un gran milagro.   Abstract This text proposes a personal reflection on the multiple contradictions and challenges that the institution and the experience of motherhood pose to women, considering a very specific context: the American academy, to which I arrived as a (privileged immigrant from Spain. If the practice of co-motherhood appears in certain contexts as a guarantee of solidarity among women, other factors such as race, class or purely individual circumstances modulate our lives as women, workers and mothers. In any case, in our developed and hyper-competitive societies, it is only thanks to formal or informal networks of support between women and a clear will on the part of our partners that allows us to live the experience of motherhood as a great miracle.

  16. Autopista M-1, Londres-Yorkshire - Gran Bretaña

    Directory of Open Access Journals (Sweden)

    Editorial, Equipo

    1972-10-01

    Full Text Available The two section, Wakefield-Darton and Darton-Tankersley, of 10.5 and 11.5 km respectively, complete the work on the important M-1 British motor road, which was begun twelve years ago. Apart from the road itself, these two sections include 19 bridging works: bridges, footbridges, and interchanges. Most of them are of prestressed concrete, and in some cases precast units have been extensively utilized. The first section was made by Richard Costain Ltd., and the second by Dowsett Engineering Construction Ltd. The Calder River Bridge was the object of a design competition. The others were done under the direction of Col. S. Maynard Lovell, County Inspector of West Riding for the Transport Ministry.Con los dos tramos Wakefield-Darton y Darton-Tankersley, el primero de 10,5 km y el segundo de 11,5 km, finalizan las obras de esta importante autopista inglesa, que han durado unos 12 años. Aparte de la carretera propiamente dicha, se han realizado 19 obras elevadas: puentes, pasarelas, cambios de dirección, etc.; casi todas ellas de hormigón pretensado y algunas con gran uso de elementos prefabricados. El primer tramo ha sido construido por Richard Costain Ltd., y el segundo, por Dowsett Engineering Construction Ltd. El puente de Calder River se realizó previo concurso; todo lo demás se ha llevado a cabo, bajo la dirección del Col. S. Maynard Lovell, Inspector del Condado de West Riding, para el Ministerio de Transportes.

  17. LA RECUPERACIÓN INDUSTRIAL DEL AGLOMERADO GRAN ROSARIO A INICIOS DEL SIGLO XXI

    Directory of Open Access Journals (Sweden)

    Paula J. Báscolo

    2009-01-01

    Full Text Available El abandono de la convertibilidad trajo aparejado un cambio del régimen macroeconómico que contribuyó a la recuperación de la industria nacional y regional, luego de un periodo de pérdida de participación en el producto como consecuencia de políticas que no la favorecieron. Así, la devaluación de 2002 marca un punto de inflexión en la evolución del sector industrial. En ese escenario de tipo de cambio real elevado, la recuperación de la industria se explicó fundamentalmente por el incremento de la “competitividad precio”. Si bien el cambio en el contexto macroeconómico era una condición para posibilitar una recuperación económica, ésta no es suficiente para hacer sustentable un proceso de crecimiento en el largo plazo. Desde el 2005, el aumento de los precios comenzó a erosionar sostenidamente la competitividad del tipo de cambio real, a través del incremento en los costos industriales. Dado que la industria fue el motor de desarrollo durante un largo lapso y, en los últimos años lideró la recuperación económica en la región, este trabajo busca analizar las características del crecimiento industrial en Rosario y el Aglomerado Gran Rosario (AGR a partir de la devaluación y evaluar la evolución de indicadores que podrían afectar su desempeño futuro.

  18. Analysis of population substructure in two sympatric populations of Gran Chaco, Argentina.

    Directory of Open Access Journals (Sweden)

    Federica Sevini

    Full Text Available Sub-population structure and intricate kinship dynamics might introduce biases in molecular anthropology studies and could invalidate the efforts to understand diseases in highly admixed populations. In order to clarify the previously observed distribution pattern and morbidity of Chagas disease in Gran Chaco, Argentina, we studied two populations (Wichí and Criollos recruited following an innovative bio-cultural model considering their complex cultural interactions. By reconstructing the genetic background and the structure of these two culturally different populations, the pattern of admixture, the correspondence between genealogical and genetic relationships, this integrated perspective had the power to validate data and to link the gap usually relying on a singular discipline. Although Wichí and Criollos share the same area, these sympatric populations are differentiated from the genetic point of view as revealed by Non Recombinant Y Chromosome genotyping resulting in significantly high Fst values and in a lower genetic variability in the Wichí population. Surprisingly, the Amerindian and the European components emerged with comparable amounts (20% among Criollos and Wichí respectively. The detailed analysis of mitochondrial DNA showed that the two populations have as much as 87% of private haplotypes. Moreover, from the maternal perspective, despite a common Amerindian origin, an Andean and an Amazonian component emerged in Criollos and in Wichí respectively. Our approach allowed us to highlight that quite frequently there is a discrepancy between self-reported and genetic kinship. Indeed, if self-reported identity and kinship are usually utilized in population genetics as a reliable proxy for genetic identity and parental relationship, in our model populations appear to be the result not only and not simply of the genetic background but also of complex cultural determinants. This integrated approach paves the way to a rigorous

  19. The Design of NetSecLab: A Small Competition-Based Network Security Lab

    Science.gov (United States)

    Lee, C. P.; Uluagac, A. S.; Fairbanks, K. D.; Copeland, J. A.

    2011-01-01

    This paper describes a competition-style of exercise to teach system and network security and to reinforce themes taught in class. The exercise, called NetSecLab, is conducted on a closed network with student-formed teams, each with their own Linux system to defend and from which to launch attacks. Students are expected to learn how to: 1) install…

  20. OpenLabNotes – An Electronic Laboratory Notebook Extension for OpenLabFramework

    Directory of Open Access Journals (Sweden)

    List Markus

    2015-09-01

    Full Text Available Electronic laboratory notebooks (ELNs are more accessible and reliable than their paper based alternatives and thus find widespread adoption. While a large number of commercial products is available, small- to mid-sized laboratories can often not afford the costs or are concerned about the longevity of the providers. Turning towards free alternatives, however, raises questions about data protection, which are not sufficiently addressed by available solutions. To serve as legal documents, ELNs must prevent scientific fraud through technical means such as digital signatures. It would also be advantageous if an ELN was integrated with a laboratory information management system to allow for a comprehensive documentation of experimental work including the location of samples that were used in a particular experiment. Here, we present OpenLabNotes, which adds state-of-the-art ELN capabilities to OpenLabFramework, a powerful and flexible laboratory information management system. In contrast to comparable solutions, it allows to protect the intellectual property of its users by offering data protection with digital signatures. OpenLabNotes effectively closes the gap between research documentation and sample management, thus making Open- LabFramework more attractive for laboratories that seek to increase productivity through electronic data management.

  1. Tools for application management at Jefferson Lab

    International Nuclear Information System (INIS)

    The Software Controls Group at Thomas Jefferson National Accelerator Facility (Jefferson Lab) is responsible for slow controls for many Jefferson Lab facilities. The Experimental Physics and Industrial Control System (EPICS) is used as the basis of these control systems. The Controls Group developed and maintains over 150 control applications running on over 100 I/O controllers (IOCs). With so many applications, it becomes increasingly difficult to maintain and upgrade older applications and still produce new applications. The difficulties became especially apparent this year as a major effort was undertaken to upgrade all control system applications to the newest versions of EPICS and VxWorks. Over the past few years, the Controls Group has worked on constructing a framework within which to develop and maintain applications more efficiently. As the framework has matured and applications have been structured to fit the framework, a number of tools have been developed to help with software maintenance and upgrades. This paper will describe some of these tools and how they are used to enhance the maintainability and reliability of the control system

  2. Control system reliability at Jefferson Lab

    International Nuclear Information System (INIS)

    At Thomas Jefferson National Accelerator Facility (Jefferson Lab), the availability of the control system is crucial to the operation of the accelerator for experimental programs. Jefferson Lab's control system, uses 68040 based microprocessors running VxWorks, Unix workstations, and a variety of VME, CAMAC. GPIB, and serial devices. The software consists of control system toolkit software, commercial packages, and over 200 custom and generic applications, some of which are highly complex. The challenge is to keep this highly diverse and still growing system, with over 162,000 control points, operating reliably, while managing changes and upgrades to both the hardware and software. Downtime attributable to the control system includes the time to troubleshoot and repair problems and the time to restore the machine to operation of the scheduled program. This paper describes the availability of the control system during the last year, the heaviest contributors to downtime and the response to problems. Strategies for improving the robustness of the control system am detailed and include changes in hardware, software, procedures and processes. The improvements range from the routine preventive hardware maintenance, to improving their ability to detect, predict and prevent problems. This paper also describes the software tools used to assist in control system troubleshooting, maintenance and failure recovery processes

  3. The evolution of Jefferson Lab's control system

    International Nuclear Information System (INIS)

    K. S. White; M. Bickley; W. Watson

    1999-01-01

    Thomas Jefferson National Accelerator Facility's (Jefferson Lab) accelerator controls were initially implemented as a proprietary in-house system. During machine commissioning, problems were encountered leading to a decision to migrate to the Experimental Physics and Industrial Controls System (EPICS). Since then, the accelerator and all other laboratory controls have been successfully converted. In addition to implementing Jefferson Lab's controls using EPICS, new data visualization tools have been developed and existing programs have been enhanced with new capabilities. In order to provide a more generic interface for high level applications development, a device abstraction layer, called Common DEVice (CDEV), was implemented. These additions have been made available to other laboratories and are in use at many sites, including some that do not use EPICS. Control System development is not limited to computer scientists; operators, engineers and physicists frequently add capabilities using EPICS, CDEV, Tel/tk, and other tools. These contributions have tailored the control system for many different types of customers. For the future, the authors envision more intelligent processing and more capable tools for data storage, retrieval and visualization

  4. Quality of Lab Appliances in Orthodontic Offices.

    Science.gov (United States)

    Pruzansky, D P; Park, J H

    Lab appliances are an integral part of orthodontics, from active treatment to retention. The quality and fit of an appliance can affect the treatment result and stability. This study aims to determine common points of failure in orthodontic appliances, and suggest methods to reduce this rate. A survey consisting of 23 questions was distributed to active members of the American Association of Orthodontists (AAO) via Survey Monkey. The most common appliance to need an adjustment was the wrap-around retainer, with the Hawley retainer as a close second. The least common appliance needing adjustment was the Essix/clear retainer. Respondents were asked which component of each appliance was most commonly responsible for an ill-fit. For Hawley and wrap-around retainers, clasps were the most common problem at 50%, whereas spring aligners had two components - clasps and labial bows, both at 38%. Ill-fitting Essix/clear retainers had gingival impingement (52%) closely followed by poor posterior seating (43%). Communication between the orthodontist and lab technician can be improved by establishing a quality assurance protocol for outgoing and incoming cases. The labial bow of Hawley's, wrap-arounds and spring aligners should be clearly demarcated on the casts. Impressions should be free of distortion and casts should be inspected for accuracy. Clear retainers and positioner should be trimmed to avoid gingival impingement. The type of clasp should be selected based on the anatomy of the teeth, and bands should be checked for accuracy of fit.

  5. Temperature quenching in LAB based liquid scintillator

    Science.gov (United States)

    Sörensen, A.; Hans, S.; Junghans, A. R.; Krosigk, B. v.; Kögler, T.; Lozza, V.; Wagner, A.; Yeh, M.; Zuber, K.

    2018-01-01

    The effect of temperature changes on the light output of LAB based liquid scintillator is investigated in a range from -5 to 30°C with α -particles and electrons in a small scale setup. Two PMTs observe the scintillator liquid inside a cylindrically shaped aluminum cuvette that is heated or cooled and the temperature dependent PMT sensitivity is monitored and corrected. The α -emitting isotopes in dissolved radon gas and in natural Samarium (bound to a LAB solution) excite the liquid scintillator mixtures and changes in light output with temperature variation are observed by fitting light output spectra. Furthermore, also changes in light output by compton electrons, which are generated from external calibration γ -ray sources, is analysed with varying temperature. Assuming a linear behaviour, a combined negative temperature coefficient of {(-0.29 ± 0.01)}{ %/°}C is found. Considering hints for a particle type dependency, electrons show {(-0.17 ± 0.02)}{ %/°}C, whereas the temperature dependency seems stronger for α -particles, with {(-0.35 ± 0.03)}{ %/°}C. Due to a high sampling rate, a pulse shape analysis can be performed and shows an enhanced slow decay component at lower temperatures, pointing to reduced non-radiative triplet state de-excitations.

  6. PC/104 Embedded IOCs at Jefferson Lab

    Energy Technology Data Exchange (ETDEWEB)

    Jianxun Yan, Trent Allison, Sue Witherspoon, Anthony Cuffe

    2009-10-01

    Jefferson Lab has developed embedded IOCs based on PC/104 single board computers (SBC) for low level control systems. The PC/104 IOCs run EPICS on top of the RTEMS operating system. Two types of control system configurations are used in different applications, PC/104 SBC with commercial PC/104 I/O cards and PC/104 SBC with custom designed FPGA-based boards. RTEMS was built with CEXP shell to run on the PC/104 SBC. CEXP shell provides the function of dynamic object loading, which is similar to the widely used VxWorks operating system. Standard software configurations were setup for PC/104 IOC application development to provide a familiar format for new projects as well as ease the conversion of applications from VME based IOCs to PC/104 IOCs. Many new projects at Jefferson Lab are going to employ PC/104 SBCs as IOCs and some applications have already been running them for accelerator operations. The PC/104 - RTEMS IOC provides a free open source Real-Time Operating System (RTOS), low cost/maintenance, easily installed/ configured, flexible, and reliable solution for accelerator control and 12GeV Upgrade projects.

  7. Control system reliability at Jefferson Lab

    International Nuclear Information System (INIS)

    White, K.S.; Areti, H.; Garza, O.

    1997-01-01

    At Thomas Jefferson National Accelerator Facility (Jefferson Lab), the availability of the control system is crucial to the operation of the accelerator for experimental programs. Jefferson Lab's control system, uses 68040 based microprocessors running VxWorks, Unix workstations, and a variety of VME, CAMAC. GPIB, and serial devices. The software consists of control system toolkit software, commercial packages, and over 200 custom and generic applications, some of which are highly complex. The challenge is to keep this highly diverse and still growing system, with over 162,000 control points, operating reliably, while managing changes and upgrades to both the hardware and software. Downtime attributable to the control system includes the time to troubleshoot and repair problems and the time to restore the machine to operation of the scheduled program. This paper describes the availability of the control system during the last year, the heaviest contributors to downtime and the response to problems. Strategies for improving the robustness of the control system am detailed and include changes in hardware, software, procedures and processes. The improvements range from the routine preventive hardware maintenance, to improving their ability to detect, predict and prevent problems. This paper also describes the software tools used to assist in control system troubleshooting, maintenance and failure recovery processes

  8. Chlorophyll increase due to internal waves in the shelf-break of Gran Canaria Island (Canary Islands

    Directory of Open Access Journals (Sweden)

    Pablo Sangrà

    2001-07-01

    Full Text Available This paper shows observational evidence of internal wave generation and mixing in the southwest shelf-break region of Gran Canaria Island. Signals of periodic internal motion and related mixing events were detected through large pycnocline variations and subcritical gradient Richardson events. Broad areas of homogeneous dense water over the slope, where the vertical temperature field displays a wave-like pattern, provide further evidences of internal wave mixing in this region. The observed diapycnal chlorophyll transport matches with mixing events, suggesting a periodic nutrient supply to the euphotic zone through internal wave mixing. We postulate that internal wave mixing may be an important mechanism contributing to the biological enhancement reported southwest of Gran Canaria Island.

  9. Intake of {sup 226} Ra in osteoporosis prevention and therapy with gran-white dolomite as calcium supplement

    Energy Technology Data Exchange (ETDEWEB)

    Pecequilo, B.R.S.; Campos, M.P. [Instituto de Pesquisas Energeticas e Nucleares (IPEN), Sao Paulo, SP (Brazil)]. E-mails: brigitte@net.ipen.br; mpcampos@net.ipen.br

    2002-04-01

    A {sup 226} Ra average specific activity of 4.3 Bq.kg{sup -1} was determined by passive high resolution gamma-ray spectrometry in six samples of 'Gran White' dolomite. The committed effective dose and committed equivalent dose at bone surface were calculated through the Ana Comp code, using {sup 226} Ra intake and radium metabolic model from ICRP 67. The doses were calculated for patients submitted to osteoporosis prevention and osteoporosis therapy. (author)

  10. Itinerarios del cartoneo: un estudio etnográfico de los sectores populares del Gran Buenos Aires

    Directory of Open Access Journals (Sweden)

    Nicolás Hernán Crisafi

    2015-06-01

    Full Text Available Este trabajo presenta las líneas generales de Las tramas del cartón, un libro que describe el universo de significados en los sectores cartoneros del Gran Buenos Aires, durante un particular momento de la historia argentina en el que la crisis posconvertibilidad configuraba nuevas prácticas sociales, tanto en el trabajo como en la familia.

  11. Innovative Educational Practice: Using Virtual Labs in the Secondary Classroom

    Directory of Open Access Journals (Sweden)

    Marcel Satsky Kerr, PhD

    2004-07-01

    Full Text Available Two studies investigated the effectiveness of teaching science labs online to secondary students. Study 1 compared achievement among students instructed using hands-on Chemistry labs versus those instructed using virtual Chemistry labs (eLabs. Study 2 compared the same groups of students again while both teachers instructed using hands-on Chemistry labs to determine whether teacher or student characteristics may have affected Study 1’s findings. Participants were high school Chemistry students from a Central Texas Independent School District. Results indicated that: students learn science effectively online, schools may experience cost savings from delivering labs online, and students gain valuable technology skills needed later in college and in the workplace.

  12. JAVA Implementation of the Batched iLab Shared Architecture

    Directory of Open Access Journals (Sweden)

    Lenard Payne

    2013-04-01

    Full Text Available The MIT iLab Shared Architecture is limited currently to running on the Microsoft Windows platform. A JAVA implementation of the Batched iLab Shared Architecture has been developed that can be used on other operating systems and still interoperate with the existing Microsoft .NET web services of MIT’s iLab ServiceBroker. The Batched iLab Shared Architecture has been revised and separates the Labserver into a LabServer that handles experiment management and a LabEquipment that handles experiment execution. The JAVA implementation provides a 3-tier code development model that allows code to be reused and to develop only the code that is specific to each experiment.

  13. Morphosedimentary expression of the Giant Pock Mark structure known as the "Gran Burato" (Transitional Zone, Galicia continental margin)

    Science.gov (United States)

    Lopez, Angel Enrique; Rubio, Belén; Rey, Daniel; Mohamed, Kais; Alvarez, Paula; Plaza-Morlote, Maider; Bernabeu, Ana; Druet, Maria; Martins, Virginia

    2016-04-01

    This paper presents the characterization of the sedimentary environment and other sedimentological features of the Transitional Zone of the Galicia continental margin, in the vicinity of the giant pock -mark structure known as the Gran Burato. The area is characterized by marginal platforms and a horst-graben system controlled by NW-SE oriented normal faults. In this zone, three giant pockmark structures, one of them known as the Gran Burato, were reported as associated to large-scale fluid escapes. The study area is located on the Transitional Zone (TZ) of the Galicia passive continental margin, which extends from Cape Finisterre (43o N) in the North to around 40oN in the South. This margin shows a complex structural configuration, which is reflected in the seabed, owing to tectonic movements from Mesozoic rifting phases and Eocene compression (Pyrennean Orogeny). Sedimentological, geochemical and physical properties analysis and 14C AMS-dating of a 4 m piston core extracted in the vicinity of the Gran Burato complemented by multibeam and TOPAS surveys allowed characterizing of the sedimentary environment in the study area. The interpretation of these data showed that the sedimentary and tectonic evolution of the area controlled by the activity of fluid dynamics.

  14. Respecifying lab ethnography an ethnomethodological study of experimental physics

    CERN Document Server

    Sormani, Philippe

    2014-01-01

    Respecifying Lab Ethnography delivers the first ethnomethodological study of current experimental physics in action, describing the disciplinary orientation of lab work and exploring the discipline in its social order, formal stringency and skilful performance - in situ and in vivo. In bringing together two major strands of ethnomethodological inquiry, reflexive ethnography and video analysis, which have hitherto existed in parallel, Respecifying Lab Ethnography introduces a practice-based video analysis. In doing so, the book recasts conventional distinctions to shed fresh light on methodolog

  15. Stream piracy in the Black Hills: A geomorphology lab exercise

    Science.gov (United States)

    Zaprowski, B.J.; Evenson, E.B.; Epstein, J.B.

    2002-01-01

    The Black Hills of South Dakota exhibits many fine examples of stream piracy that are very suitable for teaching geomorphology lab exercises. This lab goes beyond standard topographic map interpretation by using geologic maps, well logs, gravel provenance and other types of data to teach students about stream piracy. Using a step-by-step method in which the lab exercises ramp up in difficulty, students hone their skills in deductive reasoning and data assimilation. The first exercises deal with the identification of stream piracy at a variety of spatial scales and the lab culminates with an exercise on landscape evolution and drainage rearrangement.

  16. The History of Science and Technology at Bell Labs

    Science.gov (United States)

    Bishop, David

    2008-03-01

    Over the last 80 years, Bell Labs has been one of the most scientifically and technologically productive research labs in the world. Inventions such as the transistor, laser, cell phone, solar cell, negative feedback amplifier, communications satellite and many others were made there. Scientific breakthroughs such as discovery of the Big Bang, the wave nature of the electron, electron localization and the fractional quantum hall effect were also made there making Bell Labs almost unique in terms of large impacts in both science and technology. In my talk, I will discuss the history of the lab, talk about the present and give some suggestions for how I see it evolving into the future.

  17. EarthLabs Meet Sister Corita Kent

    Science.gov (United States)

    Quartini, E.; Ellins, K. K.; Cavitte, M. G.; Thirumalai, K.; Ledley, T. S.; Haddad, N.; Lynds, S. E.

    2013-12-01

    The EarthLabs project provides a framework to enhance high school students' climate literacy and awareness of climate change. The project provides climate science curriculum and teacher professional development, followed by research on students' learning as teachers implement EarthLabs climate modules in the classroom. The professional development targets high school teachers whose professional growth is structured around exposure to current climate science research, data observation collection and analysis. During summer workshops in Texas and Mississippi, teachers work through the laboratories, experiments, and hand-on activities developed for their students. In summer 2013, three graduate students from the University of Texas at Austin Institute for Geophysics with expertise in climate science participated in two weeklong workshops. The graduate students partnered with exemplary teacher leaders to provide scientific content and lead the EarthLabs learning activities. As an experiment, we integrated a visit to the Blanton Museum and an associated activity in order to motivate participants to think creatively, as well as analytically, about science. This exercise was inspired by the work and educational philosophy of Sister Corita Kent. During the visit to the Blanton Museum, we steered participants towards specific works of art pre-selected to emphasize aspects of the climate of Texas and to draw participants' attention to ways in which artists convey different concepts. For example, artists use of color, lines, and symbols conjure emotional responses to imagery in the viewer. The second part of the exercise asked participants to choose a climate message and to convey this through a collage. We encouraged participants to combine their experience at the museum with examples of Sister Corita Kent's artwork. We gave them simple guidelines for the project based on techniques and teaching of Sister Corita Kent. Evaluation results reveal that participants enjoyed the

  18. Jefferson Lab's Journey into the Nucleus

    International Nuclear Information System (INIS)

    Douglas Higinbotham

    2004-01-01

    The year 1969 saw the publication of the first results indicating that hard scattering centres exist deep inside protons. A collaboration between the Stanford Linear Accelerator Center (SLAC) and the Massachusetts Institute of Technology was using SLAC's new high-energy electron LINAC to pioneer a rich new field in the study of the nucleus--deep inelastic scattering. Their measurements revealed that nucleons are made up of point-like particles, which Richard Feynman dubbed ''partons''. Thirty-five years on, studies of the parton-nature of the nucleus continue, not only at the traditional high-energy centres, but also at lower-energy laboratories, and in particular at the Thomas Jefferson National Accelerator Facility (Jefferson Lab) in Virginia. Jefferson Lab is home to the Continuous Electron Beam Accelerator Facility (CEBAF). Its main mission is to explore the atomic nucleus and the fundamental building-blocks of matter. As part of this mission, researchers there study the transition from the picture of the nucleus as a bound state of neutrons and protons to its deeper structure in terms of quarks and gluons--in other words, the transition from the hadronic degrees of freedom of nuclear physics to the quark-gluon degrees of freedom of high-energy physics. In exploring this transition, a wide range of experiments has been performed, from measurements of elastic form factors at large momentum transfers to studies of deep inelastic scattering. An array of spectrometers together with electron-beam energies of up to 5.7 GeV has allowed the laboratory to make significant contributions to this field. This article describes three experiments, each aimed at improving our understanding of a different aspect of the partonic nature of matter. The first, a classic deep inelastic scattering experiment, seeks to further our understanding of the composition of nucleon spin. The second experiment studies the concept of quark-hadron duality--a link between the deep inelastic

  19. La gran red: una era nueva entre la ciencia y el mito

    Directory of Open Access Journals (Sweden)

    María del Rosario Contepomi

    2007-03-01

    Full Text Available El propósito del trabajo es relacionar concepciones en torno al concepto red adoptadas por el movimiento espiritualista "Nueva Era" de la ciudad de Posadas, Misiones, Argentina, con aquellas planteadas por teóricos de la "Era de la Información y Comunicación" en el campo de las ciencias sociales. Dadas la complejidad y amplitud que se atribuye a esta noción, hemos denominado la Gran Red a esa construcción fáctica y virtual a la que se le asignan múltiples denominaciones: interconexión, interrelación, articulación. Estos complejos y heterogéneos vínculos se desarrollan entre elementos, dimensiones y niveles diferentes, tales como materialidad y espiritualidad, hombre y naturaleza, sociedad e individuo. Conforme a ello, nos preguntamos respecto a las creencias religiosas, creaciones ideológicas, producciones científicas o construcciones mitológicas que conforman el mundo-red de la cosmovisión la Nueva Era y la cultura-red de los enfoques socio-antropológicos.The purpose of this work is to relate conceptions around the concept of net adopted by the spiritualist movement "New Era" from the city of Posadas, Misiones, Argentina, with those considered by theorists of the "Era of Information and Communication" in the field of Social Sciences. Given the complexity and range that it is attributed to this notion we have designated the Great Net to that factual and virtual construction which is assigned multiple names: interconnection, interrelation, articulation. These complex and heterogeneous links develop among elements, dimensions and different levels, such as material nature and spirituality, man and nature, society and the individual. In accordance with that we ask ourselves regarding religious beliefs, ideological creations, scientific productions or mythological constructions that constitute the world-net of the view of the world of the New Era and the culture-net of the socio-anthropological approaches.

  20. RASPBERRY PI TIEDONKERUULAITTEENA : Case: Nab Labs Oy

    OpenAIRE

    Aho, Henri

    2016-01-01

    Opinnäytetyön aiheena oli Raspberry Pi-alustalle suunnitellun etäluettavan ja -hallittavan mittausjärjes-telmän toteuttaminen Nab Labs Oy:n ilmatutkimusyksikölle. Työn tavoitteena oli automatisoida mit-taustulosten keräämistä ja käsittelyä. Rinnakkain kulkeva teorian ja käytännön kuvaus jakaantuu kolmeen eri osa-alueeseen: Raspberry Pi ja siihen liitetyt laitteet, järjestelmän toiminta ja sen ohjelmointi sekä internet-käyttöliityntä ja www-ohjelmointi. Työn tuloksena syntyi mittalaitt...

  1. Innovation Incubator: Whisker Labs Technical Evaluation

    Energy Technology Data Exchange (ETDEWEB)

    Sparn, Bethany F. [National Renewable Energy Lab. (NREL), Golden, CO (United States); Frank, Stephen M. [National Renewable Energy Lab. (NREL), Golden, CO (United States); Earle, Lieko [National Renewable Energy Lab. (NREL), Golden, CO (United States); Scheib, Jennifer G. [National Renewable Energy Lab. (NREL), Golden, CO (United States)

    2017-08-01

    The Wells Fargo Innovation Incubator (IN2) is a program to foster and accelerate startup companies with commercial building energy-efficiency and demand management technologies. The program is funded by the Wells Fargo Foundation and co-administered by the National Renewable Energy Laboratory (NREL). Whisker Labs, an Oakland, California-based company, was one of four awardees in the first IN2 cohort and was invited to participate in the program because of its novel electrical power sensing technology for circuit breakers. The stick-on Whisker meters install directly on the front face of the circuit breakers in an electrical panel using adhesive, eliminating the need to open the panel and install current transducers (CTs) on the circuit wiring.

  2. Making the Case for Jefferson Lab

    International Nuclear Information System (INIS)

    This chapter is a personal account of the initial planning and competition for a new laboratory, which eventually became known as the Thomas Jefferson National Accelerator Facility, with the official nickname 'Jefferson Lab'. The period covered starts as far back as 1964, with the introduction of quarks, and extends up to the late 1980s after the initial team was assembled, the superconducting design was in place, and construction was well underway. I describe some of the major experiments that were proposed to justify the laboratory, reflect on the present status of those initially proposed experiments, and very briefly outline some of the new ideas that emerged after the laboratory was constructed. The science is presented in a simple manner intended for a lay audience, with some of the ideas illustrated by cartoons that were often used in popular lectures given during this period.

  3. The SPARC-LAB Thomson source

    Energy Technology Data Exchange (ETDEWEB)

    Vaccarezza, C., E-mail: cristina.vaccarezza@lnf.infn.it [INFN-LNF, Via Enrico Fermi, 40 00044 Frascati, Rome (Italy); Alesini, D.; Anania, M.P. [INFN-LNF, Via Enrico Fermi, 40 00044 Frascati, Rome (Italy); Bacci, A. [INFN-MI, Via Celoria 16, 20133 Milan (Italy); Biagioni, A.; Bisesto, F.; Bellaveglia, M. [INFN-LNF, Via Enrico Fermi, 40 00044 Frascati, Rome (Italy); Cardarelli, P. [University of Ferrara and INFN-FE, via Saragat 1, 44122 Ferrara (Italy); Cardelli, F. [University La Sapienza and INFN-Roma1, Piazzale Aldo Moro, 2 00161 Rome (Italy); Cianchi, A. [University of Rome Tor Vergata, Via della Ricerca Scientifica 1, 00133 Rome (Italy); Chiadroni, E.; Croia, M.; Curcio, A. [INFN-LNF, Via Enrico Fermi, 40 00044 Frascati, Rome (Italy); Delogu, P. [University of Pisa and INFN-PI, Largo B. Pontecorvo 3, 56127 Pisa (Italy); Giovenale, D. Di [INFN-LNF, Via Enrico Fermi, 40 00044 Frascati, Rome (Italy); Domenico, G. Di [University of Ferrara and INFN-FE, via Saragat 1, 44122 Ferrara (Italy); Pirro, G. Di [INFN-LNF, Via Enrico Fermi, 40 00044 Frascati, Rome (Italy); Drebot, I. [INFN-MI, Via Celoria 16, 20133 Milan (Italy); Ferrario, M. [INFN-LNF, Via Enrico Fermi, 40 00044 Frascati, Rome (Italy); Filippi, F. [University La Sapienza and INFN-Roma1, Piazzale Aldo Moro, 2 00161 Rome (Italy); and others

    2016-09-01

    The SPARC-LAB Thomson source is a compact X-ray source based on the Thomson backscattering process presently under its second phase of commissioning at the LNF. The electron beam energy ranges between 30 and 150 MeV, the electrons collide head-on with the Ti:Sapphire FLAME laser pulse the energy of which ranges between 1 and 5 J with pulse lengths in the 25 fs–10 ps range, this provides an X-ray energy tunability in the range of 20–500 keV, with the further capability to generate strongly non-linear phenomena and to drive diffusion processes due to multiple and plural scattering effects. The experimental results of the obtained X-ray radiation are presented.

  4. Replacing textbook problems with lab experiences

    Science.gov (United States)

    Register, Trevor

    2017-10-01

    End-of-the-chapter textbook problems are often the bread and butter of any traditional physics classroom. However, research strongly suggests that students be given the opportunity to apply their knowledge in multiple contexts as well as be provided with opportunities to do the process of science through laboratory experiences. Little correlation has been shown linking the number of textbook problems solved with conceptual understanding of topics in mechanics. Furthermore, textbook problems as the primary source of practice for students robs them of the joy and productive struggle of learning how to think like an experimental physicist. Methods such as Modeling Instruction tackle this problem head-on by starting each instructional unit with an inquiry-based lab aimed at establishing the important concepts and equations for the unit, and this article will discuss ideas and experiences for how to carry that philosophy throughout a unit.

  5. Making the Case for Jefferson Lab

    Energy Technology Data Exchange (ETDEWEB)

    Gross, Franz

    2011-06-01

    This chapter is a personal account of the initial planning and competition for a new laboratory, which eventually became known as the Thomas Jefferson National Accelerator Facility, with the official nickname "Jefferson Lab." The period covered starts as far back as 1964, with the introduction of quarks, and extends up to the late 1980s after the initial team was assembled, the superconducting design was in place, and construction was well underway. I describe some of the major experiments that were proposed to justify the laboratory, reflect on the present status of those initially proposed experiments, and very briefly outline some of the new ideas that emerged after the laboratory was constructed. The science is presented in a simple manner intended for a lay audience, with some of the ideas illustrated by cartoons that were often used in popular lectures given during this period.

  6. The Jefferson Lab Frozen Spin Target

    Energy Technology Data Exchange (ETDEWEB)

    Christopher Keith, James Brock, Christopher Carlin, Sara Comer, David Kashy, Josephine McAndrew, David Meekins, Eugene Pasyuk, Joshua Pierce, Mikell Seely

    2012-08-01

    A frozen spin polarized target, constructed at Jefferson Lab for use inside a large acceptance spectrometer, is described. The target has been utilized for photoproduction measurements with polarized tagged photons of both longitudinal and circular polarization. Protons in TEMPO-doped butanol were dynamically polarized to approximately 90% outside the spectrometer at 5 T and 200-300 mK. Photoproduction data were acquired with the target inside the spectrometer at a frozen-spin temperature of approximately 30 mK with the polarization maintained by a thin, superconducting coil installed inside the target cryostat. A 0.56 T solenoid was used for longitudinal target polarization and a 0.50 T dipole for transverse polarization. Spin relaxation times as high as 4000 hours were observed. We also report polarization results for deuterated propanediol doped with the trityl radical OX063.

  7. VPPD Lab - The Chemical Product Simulator

    DEFF Research Database (Denmark)

    Kalakul, Sawitree; Hussain, Rehan; Elbashir, Nimir

    2015-01-01

    of product performance models and product-chemical property models are used to evaluate different classes of product. The product classes are single molecular structure chemicals (lipids, solvents, aroma, etc.), blended products (gasoline, jet-fuels, lubricants, etc.), and emulsified product (hand wash......In this paper, the development of a systematic model-based framework for product design, implemented in the new product design software called VPPD-Lab is presented. This framework employs its in-house knowledge-based system to design and evaluate chemical products. The built-in libraries......, detergent, etc.). It has interface to identify workflow/data-flow for the inter-related activities between knowledge-based system and model-based calculation procedures to systematically, efficiently and robustly solve various types of product design-analysis problems. The application of the software...

  8. Tough Times Ahead for Government Labs

    International Nuclear Information System (INIS)

    Ban, Stephen; Buchanan, Michelle V.; Cheeks, Nona; Funsten, Herbert; Hawsey, Robert; Lane, Monya; Whitlow, Woodrow Jr.; Studt, Tim

    2008-01-01

    Many government R and D laboratory executives face a tough couple of months ahead. These anxieties are fueled by (1) possible management, technical direction, and budgetary changes in their agencies due to changes in the federal administration; (2) frozen operating budgets until March 2009 due to the Continuing Resolution (CR) attachment to the recent banking bailout bill; and (3) the financial fallout from the economic downturn. These and other pertinent questions regarding their R and D operations were addressed in R and D Magazine's 9th Annual Government R and D Executive Roundtable held on Oct. 16, 2008, in conjunction with the 46th Annual R and D 100 Awards at Chicago's Navy Pier. Most members of this year's government executive panel were hesitant to speculate on the changes that might occur in their labs as a result of the new administration. The exception to this stand was the National Renewable Energy Laboratory's (NREL's) Robert Hawsey. ''No matter who wins (the Roundtable was held before the Nov. 4th Presidential election), we expect to see continued support,'' says Hawsey. ''All of our cooperative research facilities are over-subscribed and we're looking at how we can expand them.'' Obviously, renewable energy is a hot button in the administration and likely to get increased financial backing to help meet our country's energy independence goals. When pressed, the panel was mostly optimistic about their future support, stating that external threats to the U.S. have not changed, and research work associated with homeland security and national defense is unlikely to see drastic change. ''We have a strong portfolio in life science and don't expect any changes,'' says Oak Ridge National Laboratory's (ORNL's) Michelle Buchanan. Ongoing federally funded work at the national labs that was started before the Oct. 1st start of the FY2009 fiscal year will continue without any changes - those funds are unaffected by the CR action. This applies as well to any

  9. Characterization of Tri-lab Tantalum Plate.

    Energy Technology Data Exchange (ETDEWEB)

    Buchheit, Thomas E.; Cerreta, Ellen K.; Deibler, Lisa Anne; Chen, Shu-Rong; Michael, Joseph R.

    2014-09-01

    This report provides a detailed characterization Tri-lab Tantalum (Ta) plate jointly purchased from HCStark Inc. by Sandia, Los Alamos and Lawrence Livermore National Laboratories. Data in this report was compiled from series of material and properties characterization experiments carried out at Sandia (SNL) and Los Alamos (LANL) Laboratories through a leveraged effort funded by the C2 campaign. Results include microstructure characterization detailing the crystallographic texture of the material and an increase in grain size near the end of the rolled plate. Mechanical properties evaluations include, compression cylinder, sub-scale tension specimen, micohardness and instrumented indentation testing. The plate was found to have vastly superior uniformity when compare with previously characterized wrought Ta material. Small but measurable variations in microstructure and properties were noted at the end, and at the top and bottom edges of the plate.

  10. The Jefferson Lab High Power Light Source

    International Nuclear Information System (INIS)

    Jefferson Lab has designed, built and operated two high average power free-electron lasers (FEL) using superconducting RF (SRF) technology and energy recovery techniques. Between 1999-2001 Jefferson Lab operated the IR Demo FEL. This device produced over 2 kW in the mid-infrared, in addition to producing world record average powers in the visible (50 W), ultraviolet (10 W) and terahertz range (50 W) for tunable, short-pulse (< ps) light. This FEL was the first high power demonstration of an accelerator configuration that is being exploited for a number of new accelerator-driven light source facilities that are currently under design or construction. The driver accelerator for the IR Demo FEL uses an Energy Recovered Linac (ERL) configuration that improves the energy efficiency and lowers both the capital and operating cost of such devices by recovering most of the power in the spent electron beam after optical power is extracted from the beam. The IR Demo FEL was de-commissioned in late 2001 for an upgraded FEL for extending the IR power to over 10 kW and the ultraviolet power to over 1 kW. The FEL Upgrade achieved 10 kW of average power in the mid-IR (6 microns) in July of 2004, and its IR operation currently is being extended down to 1 micron. In addition, we have demonstrated the capability of on/off cycling and recovering over a megawatt of electron beam power without diminishing machine performance. A complementary UV FEL will come on-line within the next year. This paper presents a summary of the FEL characteristics, user community accomplishments with the IR Demo, and planned user experiments

  11. The Jefferson Lab High Power Light Source

    Energy Technology Data Exchange (ETDEWEB)

    James R. Boyce

    2006-01-01

    Jefferson Lab has designed, built and operated two high average power free-electron lasers (FEL) using superconducting RF (SRF) technology and energy recovery techniques. Between 1999-2001 Jefferson Lab operated the IR Demo FEL. This device produced over 2 kW in the mid-infrared, in addition to producing world record average powers in the visible (50 W), ultraviolet (10 W) and terahertz range (50 W) for tunable, short-pulse (< ps) light. This FEL was the first high power demonstration of an accelerator configuration that is being exploited for a number of new accelerator-driven light source facilities that are currently under design or construction. The driver accelerator for the IR Demo FEL uses an Energy Recovered Linac (ERL) configuration that improves the energy efficiency and lowers both the capital and operating cost of such devices by recovering most of the power in the spent electron beam after optical power is extracted from the beam. The IR Demo FEL was de-commissioned in late 2001 for an upgraded FEL for extending the IR power to over 10 kW and the ultraviolet power to over 1 kW. The FEL Upgrade achieved 10 kW of average power in the mid-IR (6 microns) in July of 2004, and its IR operation currently is being extended down to 1 micron. In addition, we have demonstrated the capability of on/off cycling and recovering over a megawatt of electron beam power without diminishing machine performance. A complementary UV FEL will come on-line within the next year. This paper presents a summary of the FEL characteristics, user community accomplishments with the IR Demo, and planned user experiments.

  12. LAB bacteriocin applications in the last decade

    Directory of Open Access Journals (Sweden)

    Ma. del Rocío López-Cuellar

    2016-11-01

    Full Text Available In the early 2000s, the expectations about bacteriocins produced by lactic acid bacteria (LABs were aimed at food applications. However, the effectiveness of bacteriocins against undesirable micro-organisms opened endless possibilities for innovative research. In the present review, we collected a database including 429 published papers and 245 granted patents (from 2004 to 2015. Based on bibliometric analysis, the progress of bacteriocin research in the last 11 years was discussed in detail. It was found that 164 patents were granted in 2010–2015, which is equivalent to 60% in comparison with previous years (i.e. only 81 patents were granted in 2004–2009. Currently, the research on bacteriocins is still gaining importance. In the realm of therapeutic strategies, about a 37% of the published research was focused on biomedical applications in the last decade. This vein of research is currently seeking for alternative solutions to problems such as cancer, systemic infections, oral-care, vaginal infections, contraception and skincare. On the other hand, food preservation, bio-nanomaterial and veterinary applications represent 29%, 25% and 9%, respectively. All this technology is being applied and will surely grow in the future, since about 31% of the patents granted since 2004 are focused on the biomedical area, 29% on food preservation, 5% on veterinary use; whereas 13% and 16% correspond to patents granted on production–purification systems and recombinant proteins or molecular modifications in the producer strains. This review contributes to the analysis of recent LAB bacteriocin applications and their role in safety, quality and improvement of human health.

  13. Lab-on a-Chip

    Science.gov (United States)

    1999-01-01

    Labs on chips are manufactured in many shapes and sizes and can be used for numerous applications, from medical tests to water quality monitoring to detecting the signatures of life on other planets. The eight holes on this chip are actually ports that can be filled with fluids or chemicals. Tiny valves control the chemical processes by mixing fluids that move in the tiny channels that look like lines, connecting the ports. Scientists at NASA's Marshall Space Flight Center (MSFC) in Huntsville, Alabama designed this chip to grow biological crystals on the International Space Station (ISS). Through this research, they discovered that this technology is ideally suited for solving the challenges of the Vision for Space Exploration. For example, thousands of chips the size of dimes could be loaded on a Martian rover looking for biosignatures of past or present life. Other types of chips could be placed in handheld devices used to monitor microbes in water or to quickly conduct medical tests on astronauts. The portable, handheld Lab-on-a Chip Application Development Portable Test System (LOCAD-PTS) made its debut flight aboard Discovery during the STS-116 mission launched December 9, 2006. The system allowed crew members to monitor their environment for problematic contaminants such as yeast, mold, and even E.coli, and salmonella. Once LOCAD-PTS reached the ISS, the Marshall team continued to manage the experiment, monitoring the study from a console in the Payload Operations Center at MSFC. The results of these studies will help NASA researchers refine the technology for future Moon and Mars missions. (NASA/MSFC/D.Stoffer)

  14. Reducing unnecessary lab testing in the ICU with artificial intelligence.

    Science.gov (United States)

    Cismondi, F; Celi, L A; Fialho, A S; Vieira, S M; Reti, S R; Sousa, J M C; Finkelstein, S N

    2013-05-01

    To reduce unnecessary lab testing by predicting when a proposed future lab test is likely to contribute information gain and thereby influence clinical management in patients with gastrointestinal bleeding. Recent studies have demonstrated that frequent laboratory testing does not necessarily relate to better outcomes. Data preprocessing, feature selection, and classification were performed and an artificial intelligence tool, fuzzy modeling, was used to identify lab tests that do not contribute an information gain. There were 11 input variables in total. Ten of these were derived from bedside monitor trends heart rate, oxygen saturation, respiratory rate, temperature, blood pressure, and urine collections, as well as infusion products and transfusions. The final input variable was a previous value from one of the eight lab tests being predicted: calcium, PTT, hematocrit, fibrinogen, lactate, platelets, INR and hemoglobin. The outcome for each test was a binary framework defining whether a test result contributed information gain or not. Predictive modeling was applied to recognize unnecessary lab tests in a real world ICU database extract comprising 746 patients with gastrointestinal bleeding. Classification accuracy of necessary and unnecessary lab tests of greater than 80% was achieved for all eight lab tests. Sensitivity and specificity were satisfactory for all the outcomes. An average reduction of 50% of the lab tests was obtained. This is an improvement from previously reported similar studies with average performance 37% by [1-3]. Reducing frequent lab testing and the potential clinical and financial implications are an important issue in intensive care. In this work we present an artificial intelligence method to predict the benefit of proposed future laboratory tests. Using ICU data from 746 patients with gastrointestinal bleeding, and eleven measurements, we demonstrate high accuracy in predicting the likely information to be gained from proposed future

  15. Reducing unnecessary lab testing in the ICU with artificial intelligence

    Science.gov (United States)

    Cismondi, F.; Celi, L.A.; Fialho, A.S.; Vieira, S.M.; Reti, S.R.; Sousa, J.M.C.; Finkelstein, S.N.

    2017-01-01

    Objectives To reduce unnecessary lab testing by predicting when a proposed future lab test is likely to contribute information gain and thereby influence clinical management in patients with gastrointestinal bleeding. Recent studies have demonstrated that frequent laboratory testing does not necessarily relate to better outcomes. Design Data preprocessing, feature selection, and classification were performed and an artificial intelligence tool, fuzzy modeling, was used to identify lab tests that do not contribute an information gain. There were 11 input variables in total. Ten of these were derived from bedside monitor trends heart rate, oxygen saturation, respiratory rate, temperature, blood pressure, and urine collections, as well as infusion products and transfusions. The final input variable was a previous value from one of the eight lab tests being predicted: calcium, PTT, hematocrit, fibrinogen, lactate, platelets, INR and hemoglobin. The outcome for each test was a binary framework defining whether a test result contributed information gain or not. Patients Predictive modeling was applied to recognize unnecessary lab tests in a real world ICU database extract comprising 746 patients with gastrointestinal bleeding. Main results Classification accuracy of necessary and unnecessary lab tests of greater than 80% was achieved for all eight lab tests. Sensitivity and specificity were satisfactory for all the outcomes. An average reduction of 50% of the lab tests was obtained. This is an improvement from previously reported similar studies with average performance 37% by [1–3]. Conclusions Reducing frequent lab testing and the potential clinical and financial implications are an important issue in intensive care. In this work we present an artificial intelligence method to predict the benefit of proposed future laboratory tests. Using ICU data from 746 patients with gastrointestinal bleeding, and eleven measurements, we demonstrate high accuracy in predicting the

  16. Ontology: A Support Structure for a V-Labs Network: Euronet-Lab

    Directory of Open Access Journals (Sweden)

    Raul Cordeiro Correia

    2012-11-01

    Full Text Available Our propose is to build a network of virtual laboratories, based in a Virtual Closet that will contain all the elements and parts that are needed to build the various experiences available in a v-labs network (that we call Euronet-Lab. To build this complex network we need to find a system that supports effectively this structure. This probably will be a enormous database of v-labs and independent elements, where will be possible sometimes to “recycle” some of the elements. This means “re-use” the same element several times in many experiences. To do this is necessary to have a structure that allows us to have several instances of the same element. It’s important that in our structure and virtual environment we can create several “images” of the same reality and this images can be used simultaneously in different circuits/experiments. This means that we can create several instances of the same element, to be used in different experiences and exercises.

  17. The definition of the western boundary of the Guarani Aquifer System (Gran Chaco, Argentina): technical or conventional; Definicion del limite occidental del Sistema Acuifero Guarani (Gran Chaco, Argentina): tecnico o convencional

    Energy Technology Data Exchange (ETDEWEB)

    Rodello, E. A.; Veroslavsky, G.

    2012-11-01

    Unlike the eastern, northern and southern borders of the Guarani aquifer system (GAS), which extends beneath considerable regions of Argentina, Brazil, Paraguay and Uruguay, the western boundary, within the Gran Chaco, has no clear hydrogeologic definition that can be recognized at either the surface or subsurface. For this reason, the precise location of the aquifer in this area is open to many different possibilities, depending upon the factors or interests involved. Thus technical specialists have proposed locations that include or exclude, according to their own criteria, large sections of the Argentine Gran Chaco, the management and use of which, from an administrative point of view, imply diverse economic consequences. The Lomadas de Otumpa, located near the border between the Santiago del Estero and Chaco provinces, are gently sloping hills, rising to a height of no more than 110 m above the wide expanse of surrounding plains comprising the Gran Chaco. They trend NNE and are 200 km long and from 20 to 80 km in width, reflecting the presence of the regional Otumpa alignment. The Lomadas de Otumpa are clearly defined at the surface and thus they allow a geographical boundary to be imposed on the GAS sequences according to: i) their notable structural features at the surface, and ii) the close matching of the thinning and/or absence of the associated sedimentary record underground. Because the definition of the limits of the GAS has an influence on its evaluation, management, use and conservation, both at a technical and administrative level, it is of great importance to ascertain its hydrogeologic boundaries. (Author)

  18. Living Labs als een Vehikel voor (Onderwijs)innovatie

    NARCIS (Netherlands)

    Ellen Sjoer

    2014-01-01

    Wereldwijd schieten ze als paddenstoelen uit de grond: living labs. Deze ‘levende laboratoria’ zijn er in alle soorten en maten. Meestal wordt het lab gezien als een onderzoeks- en ontwikkelomgeving om een probleem met verschillende partijen op een innovatieve manier op te lossen. De thema’s van de

  19. Incorporating a Career Planning Lab into a Managerial Communications Course

    Science.gov (United States)

    May, Gary L.

    2005-01-01

    This article describes how a small business school, as part of a strategic planning initiative to improve career services, added a self-directed career planning lab to an existing managerial communication course. The lab concept and the learning design are innovative because they met a student need without creating additional time demands on the…

  20. The Living Labs: Innovation in Real-Life Settings

    Science.gov (United States)

    Hawk, Nathan; Bartle, Gamin; Romine, Martha

    2012-01-01

    The living lab (LL) is an open innovation ecosystem serving to provide opportunities for local stakeholders to practice research and to experiment with meaningful improvements for cities and other organizations. Living labs aim at involving the user as a cocreator. In this article the relationship between the LLs and a variety of stakeholders is…

  1. Aerial view of the water reservoirs for Lab II

    CERN Multimedia

    1974-01-01

    Two large reservoirs (5000 m3 each) were built on the Swiss part of the site (Lab I is on the left). The water was drawn from the pumping station at Le Vengeron on Lac Léman, through a 10 km long pipe to be distributed over all Lab II.

  2. The Global MRIO Lab - charting the world economy

    NARCIS (Netherlands)

    Lenzen, Manfred; Geschke, Arne; Rahman, Muhammad Daaniyall Abd; Xiao, Yanyan; Fry, Jacob; Reyes, Rachel; Dietzenbacher, Hendrikus; Inomata, Satoshi; Kanemoto, Keiichiro; Los, Bart; Moran, Daniel; Schulte in den Bäumen, Hagen; Tukker, Arnold; Walmsley, Terrie; Wiedmann, Thomas; Wood, Richard; Yamano, Norihiko

    2017-01-01

    We describe the creation of the Global Multi-Region Input-Output (MRIO) Lab, which is a cloud-computing platform offering a collaborative research environment through which participants can use each other's resources to assemble their own individual MRIO versions. The Global MRIO Lab's main purpose

  3. Macromolecules Inquiry: Transformation of a Standard Biochemistry Lab

    Science.gov (United States)

    Unsworth, Elizabeth

    2014-01-01

    Identification of macromolecules in food is a standard introductory high school biology lab. The intent of this article is to describe the conversion of this standard cookbook lab into an inquiry investigation. Instead of verifying the macromolecules found in food, students use their knowledge of the macromolecules in food to determine the…

  4. European labs brace for German cuts: international collaboration

    CERN Multimedia

    Clery, D

    1996-01-01

    Germany, the largest contributor to international European research labs, announced plans to reduce its contributions an average of 8% in the nation's latest budget. CERN and other labs are worried that the cuts will endanger ongoing projects and that other countries may follow Germany's lead.

  5. Genomics Education in Practice: Evaluation of a Mobile Lab Design

    Science.gov (United States)

    Van Mil, Marc H. W.; Boerwinkel, Dirk Jan; Buizer-Voskamp, Jacobine E.; Speksnijder, Annelies; Waarlo, Arend Jan

    2010-01-01

    Dutch genomics research centers have developed the "DNA labs on the road" to bridge the gap between modern genomics research practice and secondary-school curriculum in the Netherlands. These mobile DNA labs offer upper-secondary students the opportunity to experience genomics research through experiments with laboratory equipment that…

  6. The Multisensory Sound Lab: Sounds You Can See and Feel.

    Science.gov (United States)

    Lederman, Norman; Hendricks, Paula

    1994-01-01

    A multisensory sound lab has been developed at the Model Secondary School for the Deaf (District of Columbia). A special floor allows vibrations to be felt, and a spectrum analyzer displays frequencies and harmonics visually. The lab is used for science education, auditory training, speech therapy, music and dance instruction, and relaxation…

  7. Living Labs as boundary-spanners between Triple Helix actors

    NARCIS (Netherlands)

    van Geenhuizen, M.S.

    2016-01-01

    Living labs are an increasingly popular methodology to enhance innovation. Living labs aim to span boundaries between different organizations, among others Triple helix actors, by acting as a network organization typically in a real-life environment to foster co-creation by user-groups. This paper

  8. Engineering Students' Experiences from Physics Group Work in Learning Labs

    Science.gov (United States)

    Mellingsaeter, Magnus Strøm

    2014-01-01

    Background: This paper presents a case study from a physics course at a Norwegian university college, investigating key aspects of a group-work project, so-called learning labs, from the participating students' perspective. Purpose: In order to develop these learning labs further, the students' perspective is important. Which aspects are essential…

  9. Masa muscular, fuerza muscular y otros componentes de funcionalidad en adultos mayores institucionalizados de la Gran Caracas-Venezuela Muscle mass, muscle strength, and other functionality components in institutionalized older adults from Gran Caracas-Venezuela

    OpenAIRE

    J. A. P. Barbosa Murillo; N. G. Rodríguez M.; Y. M. Hernández H. de Valera; R. A. Hernández H.; H. A. Herrera M.

    2007-01-01

    El presente estudio tiene como objetivo describir el comportamiento de los diferentes componentes de la funcionalidad y de la masa muscular, en ancianos institucionalizados. Puesto que bajos niveles de masa muscular se han asociado con reducidos niveles de fuerza, actividad, funcionalidad, depresión de la función inmune y aumento del riesgo de morbilidad y mortalidad. Se evaluaron 152 adultos mayores de 60 años, hombres y mujeres, de 14 centros geriátricos de la Gran Caracas. Se midieron vari...

  10. Consideraciones en torno a los sistemas productivos de las sociedades prehistóricas canarias: los modelos de Tenerife y Gran Canaria

    Directory of Open Access Journals (Sweden)

    Javier Velasco Vázquez

    2013-11-01

    Full Text Available En el presente trabajo se analizan diversos aspectos de los sistemas productivos aborígenes de Tenerife y Gran Canaria y su incidencia en la organización socioeconómica de ambas formaciones.In this paper we aim to analyse some aspects about aborigine productive systems of Tenerife and Gran Canaria and their incidence in the socioeconomic organisation of these communities.

  11. The Work Smart Standards process at Jefferson Lab

    International Nuclear Information System (INIS)

    The Thomas Jefferson National Accelerator Facility (Jefferson Lab) has developed a set of Work Smart Standards for the Lab. The effort incorporated the Lab's performance-based contract into the Necessary and Sufficient (N and S) Standards identification process of the DOE. A rigorous protocol identified hazards in the workplace and standards that provide adequate protection of workers, public, and the environment at reasonable cost. The intensive process was a joint effort between the Lab and DOE and it required trained teams of knowledgeable experts in three fields: (1) actual required work conditions at Jefferson Lab; (2) laws, regulations, DOE directives and performance-based contracts; and (3) Environmental Health and Safety (EH and S), Rad Con, and QA. The criteria for selection of the teams, the database designed and used for the process, and lessons learned are discussed

  12. Use of tablets for instruction and learning in microbiology labs

    DEFF Research Database (Denmark)

    Møller, Karen Louise; Jelsbak, Vibe Alopaeus; Georgsen, Marianne

    ? The empirical part of the project has been documented through field observations in the lab (in writing and with photos). We have found the following to be characteristic of the work of the students: the students use the tablets collaboratively, take more photos than requested, use the video based instructions......In the Bachelor Programme of Biomedical Laboratory Analysis at University College VIA, the students work in a classified microbiology laboratory. This means that they are not allowed to bring their personal computers into the lab. Until now the students have used paper based lab instructions...... and taken notes by hand. Use of tablets in the lab offers new opportunities. In September 2012, nine tablets were introduced into one of the labs of the college. Groups of students use the tablets to access documents, watch video instructions, and to document results and procedures digitally. The objectives...

  13. Groundwater flow in a volcanic-sedimentary coastal aquifer: Telde area, Gran Canaria, Canary Islands, Spain

    Science.gov (United States)

    Cabrera, M. C.; Custodio, E.

    Groundwater conditions in a 75- km2 coastal area around the town of Telde in eastern Gran Canaria island have been studied. Pliocene to Recent volcanic materials are found, with an intercalated detrital formation (LPDF), which is a characteristic of the area. Groundwater development has become intensive since the 1950s, mostly for intensive agricultural irrigation and municipal water supply. The LPDF is one order of magnitude more transmissive and permeable than the underlying Phonolitic Formation when median values are compared (150 and 15 m2 day-1 5 and 0.5 m day-1, respectively). These two formations are highly heterogeneous and the ranges of expected well productivities partly overlap. The overlying recent basalts constituted a good aquifer several decades ago but now are mostly drained, except in the southern areas. Average values of drainable porosity (specific yield) seem to be about 0.03 to 0.04, or higher. Groundwater development has produced a conspicuous strip where the watertable has been drawn down as much as 40 m in 20 years, although the inland watertable elevation is much less affected. Groundwater reserve depletion contributes only about 5% of ed water, and more than 60% of this is transmitted from inland areas. Groundwater discharge into the sea may still be significant, perhaps 30% of total inflow to the area is discharged to the sea although this value is very uncertain. Les conditions de gisement de l'eau souterraine d'une région de 75 km2 de la côte Est de l'île de la Grande Canarie (archipel des Canaries), dans le secteur de Telde, ont été étudiées, en utilisant seulement les données fournies par les puits d'exploitation existants. Les matériaux volcaniques, d'âge Pliocène à sub-actuel, sont séparés par une formation détritique (FDLP), qui constitue la principale singularité de cette région. L'exploitation de l'eau souterraine est devenue intensive à partir de 1950, principalement pour des besoins d'irrigation (agriculture

  14. Learning by Viewing - Nobel Labs 360

    Science.gov (United States)

    Mather, John C.

    2013-01-01

    First of all, my thanks to the Nobel Lindau Foundation for their inspiration and leadership in sharing the excitement of scientific discovery with the public and with future scientists! I have had the pleasure of participating twice in the Lindau meetings, and recently worked with the Nobel Labs 360 project to show how we are building the world's greatest telescope yet, the James Webb Space Telescope (JWST). For the future, I see the greatest challenges for all the sciences in continued public outreach and inspiration. Outreach, so the public knows why we are doing what we are doing, and what difference it makes for them today and in the long-term future. Who knows what our destiny may be? It could be glorious, or not, depending on how we all behave. Inspiration, so that the most creative and inquisitive minds can pursue the scientific and engineering discoveries that are at the heart of so much of human prosperity, health, and progress. And, of course, national and local security depend on those discoveries too; scientists have been working with "the government" throughout recorded history. For the Lindau Nobel experiment, we have a truly abundant supply of knowledge and excitement, through the interactions of young scientists with the Nobelists, and through the lectures and the video recordings we can now share with the whole world across the Internet. But the challenge is always to draw attention! With 7 billion inhabitants on Earth, trying to earn a living and have some fun, there are plenty of competing opportunities and demands on us all. So what will draw attention to our efforts at Lindau? These days, word of mouth has become word of (computer) mouse, and ideas propagate as viruses ( or memes) across the Internet according to the interests of the participants. So our challenge is to find and match those interests, so that the efforts of our scientists, photographers, moviemakers, and writers are rewarded by our public. The world changes every day, so there

  15. Kdr mutations in Triatoma infestans from the Gran Chaco are distributed in two differentiated foci: Implications for pyrethroid resistance management.

    Science.gov (United States)

    Sierra, Ivana; Capriotti, Natalia; Fronza, Georgina; Mougabure-Cueto, Gastón; Ons, Sheila

    2016-06-01

    Point mutations in the voltage-gated sodium channel, the primary target of pyrethroid insecticides, have been associated with the resistance in Triatoma infestans, an important vector of Chagas' disease. Hence, the sustainability of vector control programs requires the implementation of resistance management strategies. We determined the sensitivity of the molecular assays previously designed for early resistance detection to be used in pooled samples from a wide area of the endemic region, and validated them for their routine use in control campaigns for the monitoring of insecticide resistance in T. infestans. Consequently, we used these methods to examine the distribution of resistance-associated mutations in the sodium channel gene in populations of T. infestans from the Argentinean and Bolivian Gran Chaco. The PASA and REA assays tested proved sensitive enough to detect kdr SNPs in pooled samples, indicating these assays are suitable for routine screening in insecticide resistance surveillance. Two geographically differentiated foci were detected in T. infestans populations from the Argentinean and Bolivian Gran Chaco, with populations on the Bolivian-Argentinean border carrying L1014F mutation, and those from the Argentinean Chaco carrying L925I mutation. In all highly resistant populations analyzed, one of both kdr mutations was present, and toxicological assays determined that all pyrethroid resistant populations analyzed herein were sensitive to fenitrothion. The principal cause of pyrethroid resistance in T. infestans from the Gran Chaco ecoregion is kdr mutations in the sodium channel. Different levels of resistance occur in different populations carrying identical mutation, suggesting the existence of contributory mechanisms. Copyright © 2016 Elsevier B.V. All rights reserved.

  16. Fábrica para Frigo-Canarias, S.A. en Jinamar (Teide Gran Canaria – España

    Directory of Open Access Journals (Sweden)

    López Díaz, Luis

    1974-06-01

    Full Text Available This building is situated in Janamar (Telde, Las Palmas in Gran Canaria and to accomplish it the valuable experiences have been utilised that Frigo has collected from its other important factories, foreseeing possible enlargements, rational organization of the operational cycle and easy checking of the whole system of ducts. It has offices, wardrobes and staff diningroom, separate W.C.'s for ladies and gentlemen, fabrication zone, storage, maturation tanks, freezers, cold storage rooms, loading piers, etc. Mention should be made of the hyperbolic paraboloids of reinforced concrete that cover the storage house for cartonnage, for raw material and the big central bay as well as the steam kettle room in the shape of a revolving hyperboloid and glass cover.Este edificio está situado en Jinamar (Telde, Las Palmas de Gran Canaria, y para su organización se han recogido las valiosas experiencias que Frigo ha deducido de sus otras fábricas importantes, previendo posibles ampliaciones, organización racional del ciclo operativo y comodidad de control de todas las canalizaciones. Dispone de oficinas, vestuarios y comedor de empleados, aseos para ambos sexos, zona de fabricación, almacenes, tanques de maduración, congeladores, cámaras frigoríficas, muelles de carga, etc. Son de destacar los paraboloides hiperbólicos de hormigón armado que cubren el almacén de cartonaje, el de materias primas y la gran nave central, así como la cámara de calderas de vapor con forma de hiperboloide de revolución y cubierta de cristal.

  17. Diseño de indicadores urbanos de sustentabilidad. El caso del Gran San Juan en Argentina.

    Directory of Open Access Journals (Sweden)

    Nora Elsa Nacif

    2016-11-01

    Full Text Available Este trabajo surge de un proyecto de investigación en curso, cuya finalidad principal es contribuir al desarrollo urbano sustentable de la ciudad de Gran San Juan, entendiendo por tal, al desarrollo que considera como ejes del mismo a la equidad social, la eficiencia económica y la preservación del ambiente, a través del estudio de un cuerpo de indicadores urbanos como herramientas de monitoreo permanente y dinámico. La consideración de la sustentabilidad en Gran San Juan, es un imperativo ineludible por su carácter de “ciudad oasis de zona sísmica”, lo que implica preservar su condición de ciudad intermedia. En este marco, se sigue un esquema metodológico que ordena el trabajo en etapas generales de exploración de antecedentes e información obtenida como trabajo de campo, procesamiento y georeferenciación de resultados, para posteriormente formular lineamientos a ser considerados en planes de ordenamiento territorial. Hasta el momento los resultados obtenidos dentro de la línea investigativa, incluyen el desarrollo de un sistema de indicadores estructurado y articulado en base a tres subsistemas que se corresponden con los aspectos: Físico espacial, Socio cultural y Ambiental, que contienen a los diversos indicadores de sustentabilidad. Además de la aplicación de los indicadores del subsistema físico espacial para evaluar algunos sectores urbanos del Gran San Juan, considerados “críticos”. 

  18. The neurological work of Artur Galcerán i Granés (1850-1919).

    Science.gov (United States)

    Arboix, A; Fabregas, M G

    2011-05-01

    To analyze the neurological work of Artur Galcerán i Granés (Girona 1850-Barcelona 1919) founder of the Society of Psychiatry and Neurology of Barcelona in 1911. We performed a literature search using MEDLINE from the keywords"Galceran Granés" and "Society of Psychiatry and Neurology of Barcelona", using the doctoral thesis of M. G. Fabregas Camps: "History of Neurology in Catalonia. From 1882 to 1949 ", and original historical bibliographical sources of the Library of the Academy of Sciences Mèdiques de Catalunya i Balears. Artur Galcerán i Granés was a disciple of the school of psychiatry of Dr. Joan Giné i Partagàs. His highlighting neurological work was: 1) "Some static and dynamic inferences about the brain, which may serve to clarify the concept of localization", 2) "Treatment of epilepsy" and 3) "Neuropathology and General Psychiatry". He was editor of "Archivos de Terapeútica de las enfermedades nerviosas y mentales" and "Anales de la Sociedad de Psiquiatría y Neurología". He was director of the mental asylum in Sant Boi of Llobregat and Pere Mata of Reus. In 1911 he founded the first Catalan and Spanish neurological society in Barcelona. The neurological work of Artur Galcerán i Granes is remarkable and significant. He was the founder of the first Catalan and Spanish neurological society: The Society of Psychiatry and Neurology of Barcelona in 1911, the forerunner of the Catalan Society of Neurology. Copyright © 2010 Sociedad Española de Neurología. Published by Elsevier Espana. All rights reserved.

  19. El intento de integración de Santo Domingo a la Gran Colombia (1821-1822

    Directory of Open Access Journals (Sweden)

    Germán A. de la Reza

    2015-09-01

    Full Text Available El presente artículo analiza los factores que influyeron en la decisión del “Estado de Hayti español” de integrarse a la Gran Colombia durante su breve existencia política de diciembre de 1821 a febrero de 1822. Los resultados de la investigación ponen de relieve la complejidad de la estrategia dominicana y agregan a las hipótesis vigentes la importancia de la convocatoria unionista y la identidad de la república fundada por Simón Bolívar en 1819.

  20. Abordaje biauricular transeptal superior en el tratamiento quirúrgico del mixoma auricular izquierdo de gran tamaño

    Directory of Open Access Journals (Sweden)

    Salvador Torregrosa

    2009-01-01

    Full Text Available Evitar la fragmentación del tejido mixoide durante el acto quirúrgico y resecar todo el espesor del septo interauricular con implantación tumoral son las dos claves para evitar las graves complicaciones de embolia peroperatoria y recidiva postoperatoria en el tratamiento quirúrgico del mixoma auricular izquierdo. La vía transeptal superior nos ha permitido, en tres pacientes, la extirpación en bloque de mixomas de gran tamaño con facilidad y sin complicaciones.

  1. PEQUEÑA Y GRAN PROPIEDAD EN ALICANTE ANTE LA REFORMA AGRARIA, 1933/34. ESTUDIO PRELIMINAR

    Directory of Open Access Journals (Sweden)

    Juan Romero González

    1990-01-01

    Full Text Available El presente artículo aborda el estudio de la estructura de la distribución de la tierra en los años 30 del siglo XX en la provincia de Alacant, a partir del R.P.E. El análisis de esta fuente geohistórica pone de relieve el dilatado proceso de fragmentación de la propiedad agraria, el paralelo de consolidación y avance de la gran propiedad y la existencia de una importante oligarquía agraria.

  2. Patología oral en niños y adolescentes con VIH en tratamiento antirretroviral de gran actividad

    OpenAIRE

    Marquez Peña, George Paul; Facultad de Odontología de la Universidad Nacional Mayor de San Marcos.; Petkova-Gueorguieva, Marieta; Facultad de Odontología de la Universidad Nacional Mayor de San Marcos.

    2016-01-01

    Objetivo: Determinar patologías orales en niños y adolescentes con virus de la inmunodeficiencia humana (VIH) en tratamiento antirretroviral de gran actividad (TARGA) según su estado clínico e inmunológico y las características del TARGA que recibían. Materiales y método: Es un estudio descriptivo, transversal y observacional. Se evaluaron 20 pacientes pediátricos del Hospital Nacional Hipólito Unanue, de ambos sexos, entre 2 y 13 años. Las patologías se diagnosticaron mediante el sistema rec...

  3. Obesidad, sobrepeso y trastornos de la conducta alimentaria en Gran Canaria: estudio de la población adolescente

    OpenAIRE

    Álvarez-Malé, Mª Luisa

    2015-01-01

    Programa de doctorado: Salud pública (Epidemiología, planificación y nutrición) [ES]Los objetivos de esta tesis fueron hallar cifras de prevalencia de TCA (Trastorno de la Conducta Alimentaria), obesidad y sobrepeso en jóvenes de la isla de Gran Canaria, obtener datos de prevalencia de riesgo de TCA y estudiar los factores asociados a estos problemas. Se seleccionaron al azar 1342 alumnos de entre 12-20 años de diferentes Centros Educativos. Para hallar la prevalencia diagn&o...

  4. Análisis del comportamiento de los viajeros del transporte interurbano en la isla de Gran Canaria

    OpenAIRE

    Cristóbal Betancor, Teresa

    2014-01-01

    Máster Universitario en Sistemas Inteligentes y Aplicaciones Numéricas en Ingeniería (SIANI) [ES] En este trabajo se hace uso de técnicas de Inteligencia de Negocio y Minería de Datos para la extracción de conocimiento útil para la empresa concesionaria del servicio de transporte interurbano de la isla de Gran Canaria. El objetivo ha sido encontrar un patrón que permita predecir la cantidad de viajeros que querrán ir de un punto a otro de red de transporte en un momento dado. Para ello se ...

  5. La gran red: una era nueva entre la ciencia y el mito. En: Avá, nº 10

    OpenAIRE

    Contepomi, María del Rosario

    2007-01-01

    El propósito del trabajo es relacionar concepciones en torno al concepto red adoptadas por el movimiento espiritualista "Nueva Era" de la ciudad de Posadas, Misiones, Argentina, con aquellas planteadas por teóricos de la "Era de la Información y Comunicación" en el campo de las ciencias sociales. Dadas la complejidad y amplitud que se atribuye a esta noción, hemos denominado la Gran Red a esa construcción fáctica y virtual a la que se le asignan múltiples denominaciones: interconexión, interr...

  6. UniSchooLabs Toolkit: Tools and Methodologies to Support the Adoption of Universities’ Remote and Virtual Labs in Schools

    Directory of Open Access Journals (Sweden)

    Augusto Chioccariello

    2012-11-01

    Full Text Available The UniSchooLabs project aims at creating an infrastructure supporting web access to remote/virtual labs and associated educational resources to engage learners with hands-on and minds-on activities in science, technology and math in schools. The UniSchooLabs tool-kit supports the teacher in selecting a remote or virtual lab and developing a lab activity based on an inquiry model template. While working with the toolkit the teacher has access to three main features: a a catalogue of available online laboratories; b an archive of activities created by other users; c a tool for creating new activities or reusing existing ones.

  7. Designing virtual science labs for the Islamic Academy of Delaware

    Science.gov (United States)

    AlZahrani, Nada Saeed

    Science education is a basic part of the curriculum in modern day classrooms. Instructional approaches to science education can take many forms but hands-on application of theory via science laboratory activities for the learner is common. Not all schools have the resources to provide the laboratory environment necessary for hands-on application of science theory. Some settings rely on technology to provide a virtual laboratory experience instead. The Islamic Academy of Delaware (IAD), a typical community-based organization, was formed to support and meet the essential needs of the Muslim community of Delaware. IAD provides science education as part of the overall curriculum, but cannot provide laboratory activities as part of the science program. Virtual science labs may be a successful model for students at IAD. This study was conducted to investigate the potential of implementing virtual science labs at IAD and to develop an implementation plan for integrating the virtual labs. The literature has shown us that the lab experience is a valuable part of the science curriculum (NBPTS, 2013, Wolf, 2010, National Research Council, 1997 & 2012). The National Research Council (2012) stressed the inclusion of laboratory investigations in the science curriculum. The literature also supports the use of virtual labs as an effective substitute for classroom labs (Babateen, 2011; National Science Teachers Association, 2008). Pyatt and Simms (2011) found evidence that virtual labs were as good, if not better than physical lab experiences in some respects. Although not identical in experience to a live lab, the virtual lab has been shown to provide the student with an effective laboratory experience in situations where the live lab is not possible. The results of the IAD teacher interviews indicate that the teachers are well-prepared for, and supportive of, the implementation of virtual labs to improve the science education curriculum. The investigator believes that with the

  8. The NOAO Data Lab virtual storage system

    Science.gov (United States)

    Graham, Matthew J.; Fitzpatrick, Michael J.; Norris, Patrick; Mighell, Kenneth J.; Olsen, Knut; Stobie, Elizabeth B.; Ridgway, Stephen T.; Bolton, Adam S.; Saha, Abhijit; Huang, Lijuan W.

    2016-07-01

    Collaborative research/computing environments are essential for working with the next generations of large astronomical data sets. A key component of them is a distributed storage system to enable data hosting, sharing, and publication. VOSpace1 is a lightweight interface providing network access to arbitrary backend storage solutions and endorsed by the International Virtual Observatory Alliance (IVOA). Although similar APIs exist, such as Amazon S3, WebDav, and Dropbox, VOSpace is designed to be protocol agnostic, focusing on data control operations, and supports asynchronous and third-party data transfers, thereby minimizing unnecessary data transfers. It also allows arbitrary computations to be triggered as a result of a transfer operation: for example, a file can be automatically ingested into a database when put into an active directory or a data reduction task, such as Sextractor, can be run on it. In this paper, we shall describe the VOSpace implementations that we have developed for the NOAO Data Lab. These offer both dedicated remote storage, accessible as a local file system via FUSE, and a local VOSpace service to easily enable data synchronization.

  9. Featured Image: Making Dust in the Lab

    Science.gov (United States)

    Kohler, Susanna

    2017-12-01

    This remarkable photograph (which spans only 10 m across; click for a full view) reveals what happens when you form dust grains in a laboratory under conditions similar to those of interstellar space. The cosmic life cycle of dust grains is not well understood we know that in the interstellar medium (ISM), dust is destroyed at a higher rate than it is produced by stellar sources. Since the amount of dust in the ISM stays constant, however, there must be additional sources of dust production besides stars. A team of scientists led by Daniele Fulvio (Pontifical Catholic University of Rio de Janeiro and the Max Planck Institute for Astronomy at the Friedrich Schiller University Jena) have now studied formation mechanisms of dust grains in the lab by mimicking low-temperature ISM conditions and exploring how, under these conditions, carbonaceous materials condense from gas phase to form dust grains. To read more about their results and see additional images, check out the paper below.CitationDaniele Fulvio et al 2017 ApJS 233 14. doi:10.3847/1538-4365/aa9224

  10. BOREAS TE-1 SSA Soil Lab Data

    Science.gov (United States)

    Hall, Forrest G. (Editor); Knapp, David E. (Editor); Nerbas, Tim; Anderson, Darwin

    2000-01-01

    This data set was collected by TE-1 to provide a set of soil properties for BOREAS investigators in the SSA. The soil samples were collected at sets of soil pits in 1993 and 1994. Each set of soil pits was in the vicinity of one of the five flux towers in the BOREAS SSA. The collected soil samples were sent to a lab, where the major soil properties were determined. These properties include, but are not limited to, soil horizon; dry soil color; pH; bulk density; total, organic, and inorganic carbon; electric conductivity; cation exchange capacity; exchangeable sodium, potassium, calcium, magnesium, and hydrogen; water content at 0.01, 0.033, and 1.5 MPascals; nitrogen; phosphorus; particle size distribution; texture; pH of the mineral soil and of the organic soil; extractable acid; and sulfur. The data are stored in tabular ASCII text files. The data files are available on a CD-ROM (see document number 20010000884), or from the Oak Ridge National Laboratory (ORNL) Distributed Active Archive Center (DAAC).

  11. Di-hadron production at Jefferson Lab

    Energy Technology Data Exchange (ETDEWEB)

    Anefalos Pereira, Sergio [Lab. Naz. Frascati, Frascati, Italy; et. al.,

    2014-10-01

    Semi-inclusive deep inelastic scattering (SIDIS) has been used extensively in recent years as an important testing ground for QCD. Studies so far have concentrated on better determination of parton distribution functions, distinguishing between the quark and antiquark contributions, and understanding the fragmentation of quarks into hadrons. Hadron pair (di-hadron) SIDIS provides information on the nucleon structure and hadronization dynamics that complement single hadron SIDIS. Di-hadrons allow the study of low- and high-twist distribution functions and Dihadron Fragmentation Functions (DiFF). Together with the twist-2 PDFs ( f1, g1, h1), the Higher Twist (HT) e and hL functions are very interesting because they offer insights into the physics of the largely unexplored quark-gluon correlations, which provide access into the dynamics inside hadrons. The CLAS spectrometer, installed in Hall-B at Jefferson Lab, has collected data using the CEBAF 6 GeV longitudinally polarized electron beam on longitudinally polarized solid NH3 targets. Preliminary results on di-hadron beam-, target- and double-spin asymmetries will be presented.

  12. A new LabVIEW interface for MDSplus

    Energy Technology Data Exchange (ETDEWEB)

    Manduchi, G., E-mail: gabriele.manduchi@igi.cnr.it [Consorzio RFX, Euratom-ENEA Association, Padova (Italy); De Marchi, E. [Department of Information Engineering, Padova University (Italy); Mandelli, A. [National Instruments (Italy)

    2013-10-15

    Highlights: ► Integration object oriented data access layer in LabVIEW. ► A new component of the MDSplus data acquisition package. ► A new approach in the graphical presentation of data acquisition systems. -- Abstract: The paper presents a new interface providing full integration of MDSplus in LabVIEW, based on the recent features of MDSplus, in particular, data streaming, multithreading and Object Oriented interface. Data streaming support fits into the data driven concept of LabVIEW and multithreading is a native concept in LabVIEW. The object oriented interface of MDSplus defines a set of classes which map specific functionality, such as Tree and TreeNode to represent pulse files and data items, respectively, and fits naturally into the LabVIEW Object Oriented programming interface (LVOOP) introduced in version 8.2. MDSplus objects have been mapped onto LabVIEW objects, which act as wrappers to the underlying MDSplus object instance. This approach allows exporting the full MDSplus functionality into LabVIEW retaining the language-independent system view provided by the MDSplus object oriented interface.

  13. A new LabVIEW interface for MDSplus

    International Nuclear Information System (INIS)

    Manduchi, G.; De Marchi, E.; Mandelli, A.

    2013-01-01

    Highlights: ► Integration object oriented data access layer in LabVIEW. ► A new component of the MDSplus data acquisition package. ► A new approach in the graphical presentation of data acquisition systems. -- Abstract: The paper presents a new interface providing full integration of MDSplus in LabVIEW, based on the recent features of MDSplus, in particular, data streaming, multithreading and Object Oriented interface. Data streaming support fits into the data driven concept of LabVIEW and multithreading is a native concept in LabVIEW. The object oriented interface of MDSplus defines a set of classes which map specific functionality, such as Tree and TreeNode to represent pulse files and data items, respectively, and fits naturally into the LabVIEW Object Oriented programming interface (LVOOP) introduced in version 8.2. MDSplus objects have been mapped onto LabVIEW objects, which act as wrappers to the underlying MDSplus object instance. This approach allows exporting the full MDSplus functionality into LabVIEW retaining the language-independent system view provided by the MDSplus object oriented interface

  14. Can Direct Measurement Videos Inspire Lab-like Learning?

    Science.gov (United States)

    Vonk, M.; Bohacek, P. H.

    2014-12-01

    Hands-on labs can offer students a rare opportunity to confront the laws of physics first hand and to gain experience using science practices. As such, hands-on labs are an important learning tool which have played a foundational role in science education since the time of Galileo. But labs also have features that make them difficult to implement in practice. They are often time consuming for the instructor to plan and setup, time consuming for students to perform, expensive to implement, and fraught with potential missteps that can send confused students into a spiral of misunderstanding. Our Direct Measurement Video team is working to create several series' of videos with an interface that allows students to interact with them in a way that (we hope) will start to feel lab-like, but with fewer of the impediments that tend to undermine lab-learning in the real world. We hope that lab-like videos will soon provide a needed complement to traditional hands-on labs in science classrooms across the nation. In this talk, I will present our vision of the pedagogical possibilities of video and highlight our progress toward the goal. This work is supported by NSF TUES award #1245268

  15. Gran Malvina. Una mirada a la experiencia bélica desde los testimonios de sus oficiales

    Directory of Open Access Journals (Sweden)

    Federico Lorenz

    2014-07-01

    Full Text Available En 1982, las fuerzas argentinas fueron derrotadas por Gran Bretaña en una guerra por las Islas Malvinas, en la que pelearon en pésimas condiciones, agravadas por el escenario hostil del archipiélago. El fracaso en esta conflagración, decidida y librada por la dictadura militar que gobernaba en Argentina desde 1976, dio lugar a un proceso que culminó con la restauración democrática. Se analizan las características de la experiencia bélica en Malvinas, a partir de un fondo documental producido a pocos días de la derrota. Este fondo está constituido por las declaraciones juradas de los oficiales argentinos acerca de su actuación en la guerra. Se estudian los testimonios escritos de oficiales que sirvieron en la Isla Gran Malvina, la segunda de las dos mayores que componen el archipiélago.

  16. GeoLab: A Geological Workstation for Future Missions

    Science.gov (United States)

    Evans, Cynthia; Calaway, Michael; Bell, Mary Sue; Li, Zheng; Tong, Shuo; Zhong, Ye; Dahiwala, Ravi

    2014-01-01

    The GeoLab glovebox was, until November 2012, fully integrated into NASA's Deep Space Habitat (DSH) Analog Testbed. The conceptual design for GeoLab came from several sources, including current research instruments (Microgravity Science Glovebox) used on the International Space Station, existing Astromaterials Curation Laboratory hardware and clean room procedures, and mission scenarios developed for earlier programs. GeoLab allowed NASA scientists to test science operations related to contained sample examination during simulated exploration missions. The team demonstrated science operations that enhance theThe GeoLab glovebox was, until November 2012, fully integrated into NASA's Deep Space Habitat (DSH) Analog Testbed. The conceptual design for GeoLab came from several sources, including current research instruments (Microgravity Science Glovebox) used on the International Space Station, existing Astromaterials Curation Laboratory hardware and clean room procedures, and mission scenarios developed for earlier programs. GeoLab allowed NASA scientists to test science operations related to contained sample examination during simulated exploration missions. The team demonstrated science operations that enhance the early scientific returns from future missions and ensure that the best samples are selected for Earth return. The facility was also designed to foster the development of instrument technology. Since 2009, when GeoLab design and construction began, the GeoLab team [a group of scientists from the Astromaterials Acquisition and Curation Office within the Astromaterials Research and Exploration Science (ARES) Directorate at JSC] has progressively developed and reconfigured the GeoLab hardware and software interfaces and developed test objectives, which were to 1) determine requirements and strategies for sample handling and prioritization for geological operations on other planetary surfaces, 2) assess the scientific contribution of selective in-situ sample

  17. A mobile design lab for user-driven innovation

    DEFF Research Database (Denmark)

    Christiansen, Ellen; Kanstrup, Anne Marie

    2007-01-01

    The paper presents the history and conceptual foundation for the Mobile Design Lab, ment to support both designers and users in the acts of user-driven innovation. The Mobile Design Lab is based on Vygotsky's theory of tool- and language-mediation, and was created in 2004 to support research...... to get 'into the street'. To support these moves might seem simple, but it is in practice not at all easy. As for today the Mobile Design Lab comprises tools and techniques for categorization, articulation and concretizatoin in design projects involving lead users as well as ordinary users, and invisible...

  18. Living lab: Format for rehearsing a new (service) practice

    DEFF Research Database (Denmark)

    Yndigegn, Signe; Aakjær, Marie Kirstejn

    service platforms takes place in the format of living labs. We characterize living labs as the design of experiential spaces where ‘what is’ and ‘what could be’ are explored over a longer period of engagement. The labs are staged to integrate multiple stakeholders’ issues and resources and to create new......Citizen engagement and the citizens as a resource are key concepts in rethinking the Danish welfare system to meet the challenges of delivering better services for the elderly, while simultaneously reducing the cost of healthcare. In this method paper, we address how the co-design of new digital...

  19. [Probiotics: from the lab to the consumer].

    Science.gov (United States)

    Rodríguez, J M

    2015-02-07

    In the last years, the field of probiotics has grown notably. However, out of the thousands of strains isolated each year in the labs around the world, very few enter in a phase of industrial development and even a lower number go to the market. In this article, the main aspects that have to be taken into account in the, usually, long and winding road that a strain must follow from isolation to the market are reviewed Results and conclusions: A probiotic microorganism has to be correctly identified at the species and strain levels. The genome sequence is the gold identification standard and provides valuable information on the safety, functionality and technological properties of a strain. The cases in which a link between a probiotic and an adverse effect has been established are scarce and have involved people with underlying pathologies. There is a wide variety of in vitro, ex vivo and animal model assays for the screening of probiotics, which provide useful information throughout the selection process; however, correctly designed clinical trials are the only way to obtain direct results on the safety and efficacy of a probiotic to the target population. Probiotic companies have the need to obtain a very high bacterial biomass in an economically viable manner while preserving the concentration of live bacteria required for exerting the expected beneficial effect until the end of the probiotic's shelf life. Finally, commercial aspects play a key role in the decision of starting an industrial development and, eventually, to place a probiotic in the market. Copyright AULA MEDICA EDICIONES 2014. Published by AULA MEDICA. All rights reserved.

  20. Link Analysis in the Mission Planning Lab

    Science.gov (United States)

    McCarthy, Jessica A.; Cervantes, Benjamin W.; Daugherty, Sarah C.; Arroyo, Felipe; Mago, Divyang

    2011-01-01

    The legacy communications link analysis software currently used at Wallops Flight Facility involves processes that are different for command destruct, radar, and telemetry. There is a clear advantage to developing an easy-to-use tool that combines all the processes in one application. Link Analysis in the Mission Planning Lab (MPL) uses custom software and algorithms integrated with Analytical Graphics Inc. Satellite Toolkit (AGI STK). The MPL link analysis tool uses pre/post-mission data to conduct a dynamic link analysis between ground assets and the launch vehicle. Just as the legacy methods do, the MPL link analysis tool calculates signal strength and signal- to-noise according to the accepted processes for command destruct, radar, and telemetry assets. Graphs and other custom data are generated rapidly in formats for reports and presentations. STK is used for analysis as well as to depict plume angles and antenna gain patterns in 3D. The MPL has developed two interfaces with the STK software (see figure). The first interface is an HTML utility, which was developed in Visual Basic to enhance analysis for plume modeling and to offer a more user friendly, flexible tool. A graphical user interface (GUI) written in MATLAB (see figure upper right-hand corner) is also used to quickly depict link budget information for multiple ground assets. This new method yields a dramatic decrease in the time it takes to provide launch managers with the required link budgets to make critical pre-mission decisions. The software code used for these two custom utilities is a product of NASA's MPL.

  1. Quantitative analysis of lab-to-lab variability in Caco-2 permeability assays.

    Science.gov (United States)

    Lee, Jong Bong; Zgair, Atheer; Taha, Dhiaa A; Zang, Xiaowei; Kagan, Leonid; Kim, Tae Hwan; Kim, Min Gi; Yun, Hwi-Yeol; Fischer, Peter M; Gershkovich, Pavel

    2017-05-01

    In this study, Caco-2 permeability results from different laboratories were compared. Six different sets of apparent permeability coefficient (P app ) values reported in the literature were compared to experimental P app obtained in our laboratory. The differences were assessed by determining the root mean square error (RMSE) values between the datasets, which reached levels as high as 0.581 for the training set compounds, i.e. ten compounds with known effective human permeability (P eff ). The consequences of these differences in P app for prediction of oral drug absorption were demonstrated by introducing the P app into the absorption and pharmacokinetics simulation software application GastroPlus™ for prediction of the fraction absorbed (F a ) in humans using calibrated "user-defined permeability models". The RMSE were calculated to assess the differences between the simulated F a and experimental values reported in the literature. The RMSE for F a simulated with the permeability model calibrated using experimental P app from our laboratory was 0.128. When the calibration was performed using P app from literature datasets, the RMSE values for F a were higher in all cases except one. This study shows quantitative lab-to-lab variability of Caco-2 permeability results and the potential consequences this can have in the use of these results for predicting intestinal absorption of drugs. Copyright © 2017 Elsevier B.V. All rights reserved.

  2. Enabling miniaturised personalised diagnostics: from lab-on-a-chip to lab-in-a-drop.

    Science.gov (United States)

    Koo, Kevin M; Wee, Eugene J H; Wang, Yuling; Trau, Matt

    2017-09-26

    The concept of personalised diagnostics is to direct accurate clinical decisions based on an individual's unique disease molecular profile. Lab-on-a-chip (LOC) systems are prime personalised diagnostics examples which seek to perform an entire sample-to-outcome detection of disease nucleic acid (NA) biomarkers on a single miniaturised platform with minimal user handling. Despite the great potential of LOC devices in providing rapid, portable, and inexpensive personalised diagnosis at the point-of-care (POC), the translation of this technology into widespread use has still been hampered by the need for sophisticated and complex engineering. As an alternative miniaturised diagnostics platform free of precision fabrication, there have been recent developments towards a solution-based lab-in-a-drop (LID) system by which an entire laboratory-based diagnostics workflow could be downscaled and integrated within a singular fluid droplet for POC detection of NA biomarkers. In contrast to existing excellent reviews on miniaturised LOC fabrication and individual steps of NA biomarker sensing, we herein focus on miniaturised solution-based NA biosensing strategies suited for integrated LID personalised diagnostics development. In this review, we first evaluate the three fundamental bioassay steps for miniaturised NA biomarker detection: crude sample preparation, isothermal target amplification, and detection readout of amplicons. Then, we provide insights into research advancements towards a functional LID system which integrates all three of the above-mentioned fundamental steps. Finally, we discuss perspectives and future directions of LID diagnostic platforms in personalised medicine applications.

  3. Chapel Hill, NC Lab--Office of Research and Development

    Science.gov (United States)

    ORD scientists at the state-of-the-art lab in Chapel Hill conduct integrated research to improve our understanding of how social, economic, and health related factors affect an individual’s or com-munity’s health risks.

  4. Safety in the Chemical Laboratory: Hazards in a Photography Lab.

    Science.gov (United States)

    Houk, Cliff; Hart, Charles

    1987-01-01

    Described are case studies illustrating chemical hazards in a photography lab due to compounds containing cyanide. Suggestions for preventing problems including proper procedures, housekeeping, facilities, and ventilation are considered. (RH)

  5. VirexLab a Virtual Reality Educational System, Phase I

    Data.gov (United States)

    National Aeronautics and Space Administration — The VirexLab, the centerpiece of this Tietronix proposal offers significant innovation to NASA and to the Marshall Space Flight Center, implementing the Biological...

  6. City Labs as Vehicles for Innovation in Urban Planning Processes

    Directory of Open Access Journals (Sweden)

    Christian Scholl

    2016-12-01

    Full Text Available This paper assesses the role of urban experiments for local planning processes through a case-based analysis of the city lab of Maastricht. In conjunction with this, the article offers three contributions, as additional elements. Firstly, the paper develops a set of defining characteristics of city labs as an analytical concept which is relevant for discussions about (collaborative planning. Secondly, it refines the literature on collaborative planning by drawing attention to experimentation and innovation. Thirdly, the paper assesses the potential of city labs to contribute to the innovation of urban governance. The work draws from the literature on experimentation and learning as well as the literature on collaborative urban planning. In the conclusions, we discuss the potential of city labs as vehicles for learning about new urban planning approaches and their limitations as spaces for small-scale experimentation. The paper is based on research for the URB@Exp research project funded by JPI Urban Europe.

  7. Lab-scale hydrogen peroxide data from ECBC

    Data.gov (United States)

    U.S. Environmental Protection Agency — Data from small lab scale tests conducted at ECBC. It contains efficacy data as well as data on env conditions such as temperature, RH, and hydrogen peroxide vapor...

  8. Establishing an intelligent transportation systems (ITS) lab at LTRC.

    Science.gov (United States)

    2008-09-30

    The primary goal of this research project is to lay the foundation for establishing a state-of-the-art Intelligent Transportation Systems (ITS) : lab at the Louisiana Transportation Research Center (LTRC), where data will be collected, analyzed, and ...

  9. In silico and wet lab approaches to study transcriptional regulation

    NARCIS (Netherlands)

    Hestand, Matthew Scott

    2010-01-01

    Gene expression is a complicated process with multiple types of regulation, including binding of proteins termed transcription factors. This thesis looks at transcription factors and transcription factor binding site discovery through computational predictions and wet lab work to better elucidate

  10. Chapter 3 – VPPD-Lab: The Chemical Product Simulator

    DEFF Research Database (Denmark)

    Kalakul, Sawitree; Cignitti, Stefano; Zhang, L.

    2017-01-01

    for computer-aided chemical product design and evaluation, implemented in the software called VPPD-Lab, is presented. In the same way a typical process simulator works, the VPPD-Lab allows users to: (1) analyze chemical-based products by performing virtual experiments (product property and performance...... calculations), (2) predict the properties of products, and (3) create new product property and product performance models when needed. However, unlike process simulators, VPPD-Lab can also be used directly for (1) design of chemicals based products using design templates for various types of products......, such as single molecule products, formulations, blends, emulsions, and devices; and (2) to create new product design templates when the needed template for a desired product is not available. VPPD-Lab employs a suite of algorithms (such as database search, molecular and mixture blend design) and toolboxes (such...

  11. VirexLab a Virtual Reality Educational System Project

    Data.gov (United States)

    National Aeronautics and Space Administration — The VirexLab, the centerpiece of this Tietronix proposal offers significant innovation to NASA and to the Marshall Space Flight Center, implementing the Biological...

  12. Gail Harlamoff: Executive Director, Life Lab Science Program

    OpenAIRE

    Rabkin, Sarah

    2010-01-01

    Gail Harlamoff is Executive Director of the Life Lab Science Program, a nationally recognized, award-winning nonprofit science and environmental organization located on the UC Santa Cruz campus. Founded in 1979, Life Lab helps schools develop gardens and implement curricula to enhance students’ learning about science, math, and the natural world. The program has trained tens of thousands of educators in more than 1400 schools across the country. Life Lab’s specialized initiatives inc...

  13. Qualification Lab Testing on M1 Abrams Engine Oil Filters

    Science.gov (United States)

    2016-11-01

    OIL FILTERS FINAL REPORT TFLRF No. 483 by Kristi K. Rutta U.S...the originator. UNCLASSIFIED QUALIFICATION LAB TESTING ON M1 ABRAMS ENGINE OIL FILTERS FINAL REPORT TFLRF No. 483 by Kristi K...TITLE AND SUBTITLE Qualification Lab Testing on M1 Abrams Engine Oil Filter 5a. CONTRACT NUMBER W56HZV-15-C-0030 5b. GRANT NUMBER 5c.

  14. Implementation of Siemens USS protocol into LabVIEW.

    Science.gov (United States)

    Hosek, P; Diblik, M

    2011-10-01

    This article gives basic overview of the USS protocol as a communication interface to drive Siemens frequency inverters. It presents our implementation of this protocol into LabVIEW, as there was permanent demand from the community of the users to have native LabVIEW implementation of the USS protocol. It also states encountered problems and their solutions. Copyright © 2011 Society for Laboratory Automation and Screening. Published by Elsevier Inc. All rights reserved.

  15. A Case Study of a High School Fab Lab

    Science.gov (United States)

    Lacy, Jennifer E.

    This dissertation examines making and design-based STEM education in a formal makerspace. It focuses on how the design and implementation of a Fab Lab learning environment and curriculum affect how instructors and students see themselves engaging in science, and how the Fab Lab relates to the social sorting practices that already take place at North High School. While there is research examining design-based STEM education in informal and formal learning environments, we know little about how K-12 teachers define STEM in making activities when no university or museum partnership exists. This study sought to help fill this gap in the research literature. This case study of a formal makerspace followed instructors and students in one introductory Fab Lab course for one semester. Additional observations of an introductory woodworking course helped build the case and set it into the school context, and provided supplementary material to better understand the similarities and differences between the Fab Lab course and a more traditional design-based learning course. Using evidence from observational field notes, participant interviews, course materials, and student work, I found that the North Fab Lab relies on artifacts and rhetoric symbolic of science and STEM to set itself apart from other design-based courses at North High School. Secondly, the North Fab Lab instructors and students were unable to explain how what they were doing in the Fab Lab was science, and instead relied on vague and unsupported claims related to interdisciplinary STEM practices and dated descriptions of science. Lastly, the design and implementation of the Fab Lab learning environment and curriculum and its separation from North High School's low tech, design-based courses effectively reinforced social sorting practices and cultural assumptions about student work and intelligence.

  16. Automatic creation of LabVIEW network shared variables

    International Nuclear Information System (INIS)

    Kluge, T.; Schroeder, H.

    2012-01-01

    We are in the process of preparing the LabVIEW controlled system components of our Solid State Direct Drive experiments for the integration into a Supervisory Control And Data Acquisition (SCADA) or distributed control system. The predetermined route to this is the generation of LabVIEW network shared variables that can easily be exported by LabVIEW to the SCADA system using OLE for Process Control (OPC) or other means. Many repetitive tasks are associated with the creation of the shared variables and the required code. We are introducing an efficient and inexpensive procedure that automatically creates shared variable libraries and sets default values for the shared variables. Furthermore, LabVIEW controls are created that are used for managing the connection to the shared variable inside the LabVIEW code operating on the shared variables. The procedure takes as input an XML spread-sheet defining the required input. The procedure utilizes XSLT and LabVIEW scripting. In a later state of the project the code generation can be expanded to also create code and configuration files that will become necessary in order to access the shared variables from the SCADA system of choice. (authors)

  17. Installation and use of LabKey Server for proteomics.

    Science.gov (United States)

    Eckels, Joshua; Hussey, Peter; Nelson, Elizabeth K; Myers, Tamra; Rauch, Adam; Bellew, Matthew; Connolly, Brian; Law, Wendy; Eng, Jimmy K; Katz, Jonathan; McIntosh, Martin; Mallick, Parag; Igra, Mark

    2011-12-01

    LabKey Server (formerly CPAS, the Computational Proteomics Analysis System) provides a Web-based platform for mining data from liquid chromatography-tandem mass spectrometry (LC-MS/MS) proteomic experiments. This open source platform supports systematic proteomic analyses and secure data management, integration, and sharing. LabKey Server incorporates several tools currently used in proteomic analysis, including the X! Tandem search engine, the ProteoWizard toolkit, and the PeptideProphet and ProteinProphet data mining tools. These tools and others are integrated into LabKey Server, which provides an extensible architecture for developing high-throughput biological applications. The LabKey Server analysis pipeline acts on data in standardized file formats, so that researchers may use LabKey Server with other search engines, including Mascot or SEQUEST, that follow a standardized format for reporting search engine results. Supported builds of LabKey Server are freely available at http://www.labkey.com/. Documentation and source code are available under the Apache License 2.0 at http://www.labkey.org. © 2011 by John Wiley & Sons, Inc.

  18. Future{at}Labs.Prosperity Game{trademark}

    Energy Technology Data Exchange (ETDEWEB)

    Beck, D.F.; Boyack, K.W.; Berman, M. [Sandia National Labs., Albuquerque, NM (United States). Innovative Alliances Dept.

    1996-10-01

    Prosperity Games{trademark} are an outgrowth and adaptation of move/countermove and seminar War Games, Prosperity Games{trademark} are simulations that explore complex issues in a variety of areas including economics, politics, sociology, environment, education, and research. These issues can be examined from a variety of perspectives ranging from global, macroeconomic and geopolitical viewpoint down to the details of customer/supplier/market interactions specific industries. All Prosperity Games{trademark} are unique in that both the game format and the player contributions vary from game to game. This report documents the Future{at}Labs.Prosperity Game{trademark} conducted under the sponsorship of the Industry Advisory Boards of the national labs, the national labs, Lockheed Martin Corporation, and the University of California. Players were drawn from all stakeholders involved including government, industry, labs, and academia. The primary objectives of this game were to: (1) explore ways to optimize the role of the multidisciplinary labs in serving national missions and needs; (2) explore ways to increase collaboration and partnerships among government, laboratories, universities, and industry; and (3) create a network of partnership champions to promote findings and policy options. The deliberations and recommendations of these players provided valuable insights as to the views of this diverse group of decision makers concerning the future of the labs.

  19. Una mirada retrospectiva desde el museo escuela del CEP Las Palmas de Gran Canaria. // A retrospective look at the school museum of the CEP Las Palmas de Gran Canaria.

    Directory of Open Access Journals (Sweden)

    Antonio S. Almeida Aguiar

    2013-12-01

    Full Text Available (ES El Museo Escuela del Centro de Profesores, se encuentra en las Palmas de Gran Canaria cuyo nombre toma el centro perteneciente a la red de Centros del Profesorado del Gobierno de Canarias. Este espacio recrea tal como era una clase de la época de Franco con materiales, libros y muebles cedidos por diferentes escuelas en su mayoría rurales. También se proyecta un video con imágenes y fotos de escuelas desde 1920 hasta 1970, y costumbre canarias de los CER. Herramienta pedagógica que, en un principio, se puso a disposición del alumnado y profesorado de ámbito no universitario para el estudio e investigación de nuestra Historia de la Educación, mediante la exposición material, documental y testimonial. // (EN The school museum is in the Teacher Training Centre in Las Palmas of Gran Canaria. This institution belongs to the Canary Islands Government’s Teacher Training Centre net. This space shows us how it was a classroom during Franco’s government: with materials, books and furniture that were given up from different schools, most of them rural schools. Also, there is a video projection with pictures in it of schools from 1920 to 1970 and the customs of the CER (Rural Education Centers in the Canary Islands. In the beginning this pedagogical tool was available for students and teachers who did not belong to the university environment. Its objective was the study and research of the history of education by documentary, material and testimonial exhibition.

  20. Perfil psicológico del paciente gran quemado: prevalencia psicopatológica y variables asociadas

    Directory of Open Access Journals (Sweden)

    E. Gallach-Solano

    2015-12-01

    Full Text Available La Unidad de Grandes Quemados del Hospital La Fe de Valencia (España atiende al año aproximadamente 1.600 urgencias por quemaduras. El paciente gran quemado constituye un gran reto para los profesionales sanitarios por las implicaciones biopsicosociales que requiere su abordaje: atención médica para su supervivencia, atención psicológica por el importante riesgo de sufrir alteraciones, asistencia rehabilitadora y fisioterapéutica destinada a su activación funcional y atención social. Realizamos un estudio observacional caso-control transversal de carácter descriptivo, con pacientes hospitalizados en nuestra Unidad de Grandes Quemados con trastornos mentales previos. El objetivo general fue determinar y describir las características sociodemográficas, tipología del trauma sufrido, características y topografía de las quemaduras y la comorbilidad con trastornos mentales previos del paciente gran quemado. El 19,8% de estos pacientes presentó trastornos relacionados con el espectro ansioso, psicótico, del ánimo, tóxicos y alcohol, de la personalidad y alteraciones cognitivas previos a la lesión. Los que menor prevalencia parecen tener son los del espectro psicótico y los trastornos asociados al consumo de alcohol y tóxicos. No aparecieron diferencias significativas entre ninguna de las variables sociodemográficas y clínicas, salvo sexo, edad y grupo de convivencia. Los resultados de nuestro estudio reflejan que en este tipo de pacientes podrían estar directamente implicados diferentes trastornos psiquiátricos. Es importante considerar que la propia quemadura también puede generar trastornos psicológicos. Por ello las intervenciones psicológicas precoces y la determinación en este tipo de pacientes son imprescindibles elementos que permitan conseguir un buen ajuste adaptativo.

  1. Hybrid Reality Lab Capabilities - Video 2

    Science.gov (United States)

    Delgado, Francisco J.; Noyes, Matthew

    2016-01-01

    Our Hybrid Reality and Advanced Operations Lab is developing incredibly realistic and immersive systems that could be used to provide training, support engineering analysis, and augment data collection for various human performance metrics at NASA. To get a better understanding of what Hybrid Reality is, let's go through the two most commonly known types of immersive realities: Virtual Reality, and Augmented Reality. Virtual Reality creates immersive scenes that are completely made up of digital information. This technology has been used to train astronauts at NASA, used during teleoperation of remote assets (arms, rovers, robots, etc.) and other activities. One challenge with Virtual Reality is that if you are using it for real time-applications (like landing an airplane) then the information used to create the virtual scenes can be old (i.e. visualized long after physical objects moved in the scene) and not accurate enough to land the airplane safely. This is where Augmented Reality comes in. Augmented Reality takes real-time environment information (from a camera, or see through window, and places digitally created information into the scene so that it matches with the video/glass information). Augmented Reality enhances real environment information collected with a live sensor or viewport (e.g. camera, window, etc.) with the information-rich visualization provided by Virtual Reality. Hybrid Reality takes Augmented Reality even further, by creating a higher level of immersion where interactivity can take place. Hybrid Reality takes Virtual Reality objects and a trackable, physical representation of those objects, places them in the same coordinate system, and allows people to interact with both objects' representations (virtual and physical) simultaneously. After a short period of adjustment, the individuals begin to interact with all the objects in the scene as if they were real-life objects. The ability to physically touch and interact with digitally created

  2. MACMA: a Virtual Lab for Plate Tectonics

    Science.gov (United States)

    Grigne, C.; Combes, M.; Tisseau, C.

    2013-12-01

    MACMA (Multi-Agent Convective MAntle) is a tool developed to simulate evolutive plate tectonics and mantle convection in a 2-D cylindrical geometry (Combes et al., 2012). The model relies mainly on a force balance to compute the velocity of each plate, and on empirical rules to determine how plate boundaries move and evolve. It includes first-order features of plate tectonics: (a) all plates on Earth do not have the same size, (b) subduction zones are asymmetric, (c) plates driven by subducting slabs and upper plates do not exhibit the same velocities, and (d) plate boundaries are mobile, can collide, merge and disappear, and new plate boundaries can be created. The MACMA interface was designed to be user-friendly and a simple use of the simulator can be achieved without any prerequisite knowledge in fluid dynamics, mantle rheology, nor in numerical methods. As a preliminary study, the simulator was used by a few students from bachelor's degree to master's degree levels. An initial configuration for plate tectonics has to be created before starting a simulation: the number and types of plate boundaries (ridge, subduction, passive margins) has to be defined and seafloor ages must be given. A simple but interesting exercise consists in letting students build such an initial configuration: they must analyze a map of tectonic plates, choose a 2-D section and examine carefully a map of seafloor ages. Students mentioned that the exercise made them realize that the 3-D spherical structure of plate tectonics does not translate directly in a simple 2-D section, as opposed to what is usually shown in books. Physical parameters: e.g. mantle viscosity, number of layers to consider in the mantle (upper and lower mantle, possible asthenosphere), initial time and mantle temperature, have to be chosen, and students can use this virtual lab to see how different scenarios emerge when parameters are varied. Very importantly, the direct visualization of the mobility of plate

  3. Las crisis bancarias y el sistema monetario internacional en la Gran Depresión y en la actualidad

    Directory of Open Access Journals (Sweden)

    Richhild Moessner

    2011-12-01

    Full Text Available Identificamos las semejanzas y las diferencias en la escala y la naturaleza de las crisis bancarias de 2008-2009 y de la Gran Depresión, y analizamos las diferencias en la respuesta de política a las dos crisis a la luz de los sistemas monetarios internacionales predominantes. Encontramos que la escala de la crisis bancaria, medida por la reducción internacional del endeudamiento de corto plazo y de los depósitos bancarios totales, fue menor en 2008-2009 que en 1931. Sin embargo, la provisión de liquidez del banco central fue mayor en el contexto de tasas de cambio flexibles de 2008-2009 que en 1931, cuando estaba limitada en muchos países por el patrón oro.

  4. Final outcome of raptors admitted to the Tafira Wildlife Rehabilitation Center, Gran Canaria Island, Spain (2003–2013

    Directory of Open Access Journals (Sweden)

    Montesdeoca, N.

    2017-05-01

    Full Text Available The outcomes of wild raptors admitted to the Tafira Wildlife Rehabilitation Center in Gran Canaria Island, Spain, from 2003 to 2013 were analyzed using a quality auditing system based on the crude and stratified (by causes of admission rates of four final outcome categories, time until death and length of stay as quality indicators. The outcome categories were: euthanasia (Er = 19.78%; unassisted mortality during hospitalization (Mr = 22.20%; release (Rr = 57.57%; and permanent captivity (Cr = 0.46%. Taking into account the particular vulnerability of insular raptor species and the high Rr achieved, findings from this study emphasize the importance of wildlife rehabilitation centers for the medical management of injured raptors and the subsequent release of rehabilitated individuals into the wild.

  5. La mujer directiva en la gran empresa española: perfil, competencias y estilos de dirección

    Directory of Open Access Journals (Sweden)

    MARÍA JOSÉ CHARLO MOLINA

    2012-01-01

    Full Text Available La escasa presencia de mujeres directivas en la gran empresa española evidencia una fuerte segregación de género del mercado de trabajo, independiente del nivel formativo. El objetivo de este trabajo es proporcionar el perfil y estilos de dirección de las altas ejecutivas españolas, a partir de la realización de un cuestionario y de su tratamiento estadístico usando el análisis factorial. El marco teórico lo proporcionan la gestión de la diversidad y las teorías sobre paradigmas de liderazgo en la empresa. A la luz de las mismas se tratará de comprobar si existe congruencia entre el rol de género y el rol organizativo, para proponer un nuevo paradigma que minimice los efectos negativos de las posibles incongruencias.

  6. La mujer directiva en la gran empresa española: perfil, competencias y estilos de dirección

    Directory of Open Access Journals (Sweden)

    María José Charlo Molina, Ph.D

    2012-07-01

    Full Text Available La escasa presencia de mujeres directivas en la gran empresa española evidencia una fuerte segregación de género del mercado de trabajo, independiente del nivel formativo. El objetivo de este trabajo es proporcionar el perfil y estilos de dirección de las altas ejecutivas españolas, a partir de la realización de un cuestionario y de su tratamiento estadístico usando el análisis factorial. El marco teórico lo proporcionan la gestión de la diversidad y las teorías sobre paradigmas de liderazgo en la empresa. A la luz de las mismas se tratará de comprobar si existe congruencia entre el rol de género y el rol organizativo, para proponer un nuevo paradigma que minimice los efectos negativos de las posibles incongruencias.

  7. Helicobacter pylori and cagA seroprevalence in sub-Saharan inmigrants recently arrived to Gran Canaria (Spain).

    Science.gov (United States)

    Sanz-Peláez, Oscar; Santana-Rodríguez, Evora; Maroto, Alfonso Angel-Moreno; Carranza-Rodríguez, Cristina; Pisos-Alamo, Elena; Pérez-Arellano, José-Luis

    2008-01-01

    Non-ulcerous dyspepsia is common among sub-Saharan people migrating into Spain. Given the high prevalence of H. pylori (HP) infection in their countries of origin, we studied the prevalence of infection in this population, and specifically the prevalence of infection by the more virulent, cagA-positive strains (CAP). 140 sub-Saharan immigrants recently arrived to Gran Canaria (Canary Islands, Spain) were studied. 80.7% were male, with a mean age of 24.2 y. 90.7% tested seropositive for HP and 72.2% of them carried antibodies against the 'pathogenicity island' cagA. We did not find any relationship between the presence of these antibodies and the clinical variables studied. We can conclude that HP infection is virtually universal in this population, with a high percentage of infection by CAP strains.

  8. LLUVIAS E INUNDACIONES EN LOS CENTROS TURÍSTICOS DE GRAN CANARIA: EL CASO DE SAN BARTOLOMÉ DE TIRAJANA

    Directory of Open Access Journals (Sweden)

    Pablo Máyer Suárez

    2006-01-01

    Full Text Available El sur de Gran Canaria ha sido intensamente transformado por las instalaciones turísticas que, desde 1962, se han realizado. Entre las consecuencias ambientales de este proceso destacan las inundaciones. El objetivo de este trabajo es determinar si existe relación entre las implantaciones turísticas y el incremento, en las últimas décadas, de los daños producidos por las inundaciones. Para ello se ha realizado un análisis diacrónico entre 1962 y la actualidad, comparando la evolución entre los episodios de lluvia intensa y los problemas generados. Los resultados señalan que el reciente incremento de los perjuicios, derivados de las inundaciones, se explica por la forma en que se han realizado los crecimientos urbanos y las infraestructuras turísticas a ellos asociados.

  9. Lecciones de la Gran Depresión para la recuperación económica en 2009

    Directory of Open Access Journals (Sweden)

    Christina D. Romer

    2009-12-01

    Full Text Available Este artículo compara la Gran Depresión de los años treinta con la actual crisis mundial y presenta algunas lecciones útiles para el diseño de políticas que permitan superar la crisis y comenzar una recuperación firme. Una de esas lecciones es que una expansión fiscal pequeña sólo tiene efectos pequeños y que una expansión monetaria puede ayudar a sanear la economía aunque las tasas de interés sean cercanas a cero. Además, los diseñadores de política se deben abstener de reducir los estímulos antes de tiempo y considerar que la recuperación financiera y la recuperación real van juntas.

  10. Hymenolepis diminuta and Rodentolepis nana (Hymenolepididae: Cyclophyllidea) in urban rodents of Gran La Plata: association with socio-environmental conditions.

    Science.gov (United States)

    Fitte, B; Robles, M R; Dellarupe, A; Unzaga, J M; Navone, G T

    2017-10-11

    The aim of this survey was to study two Hymenolepididae species in urban rodents, Rattus rattus and Rattus norvegicus, and to analyse factors that favour their presence in the environment and pose a sanitary risk. Hymenolepis diminuta and Rodentolepis nana were found in R. rattus and R. norvegicus in different proportions. Values of prevalence, mean abundance and mean intensity were recorded, and new morphometric characters were described, adding to previously known information. No significant differences were found. However, the results revealed that there is a tendency for these parasites to develop in areas with deficient socio-structural conditions and in water bodies. This study thereby shows that certain areas on the periphery of the Gran La Plata favour the existence of rodents, which act as sentinels of zoonotic diseases, and stresses the need to take action to minimize them in order to avoid putting human and animal health at risk.

  11. Characterization and cancer risk assessment of VOCs in home and school environments in gran La Plata, Argentina.

    Science.gov (United States)

    Colman Lerner, Jorge Esteban; Gutierrez, Maria de Los Angeles; Mellado, Daniela; Giuliani, Daniela; Massolo, Laura; Sanchez, Erica Yanina; Porta, Andres

    2018-04-01

    Three areas are highlighted in Gran La Plata, Argentina: industrial, urban, and residential. In this work, the levels of volatile organic compounds (VOCs) in indoor air of homes and schools in those areas were analyzed, through the use of passive monitors. The study period is between 2007 and 2010. Higher levels of VOCs were found in homes and schools in the industrial zone, higher than the levels corresponding to urban and residential. Taking into account the relationship between indoor and outdoor levels of VOCs, they have ratios (I/O) between 1.5 and 10 are evidenced contributions of emission sources of VOCs both indoor and outdoor. Complementarily, we estimated the life time cancer risk (LCR) for benzene, styrene, trichloroethylene, and tetrachloroethylene in children who spend their time mostly in such indoor environments. The results show high LCR values for benzene, which exceed acceptable values for the US EPA.

  12. Optical design of FRIDA, the integral-field spectrograph and imager for the AO system of the Gran Telescopio Canarias

    Science.gov (United States)

    Cuevas, Salvador; Eikenberry, Stephen S.; Sánchez, Beatriz; Chapa, Oscar; Espejo, Carlos; Flores-Meza, Rubén; Lara, Gerardo; Álvarez, Luis C.; Keiman, Carolina

    2008-07-01

    FRIDA (inFRared Imager and Dissector for the Adaptive optics system of the Gran Telescopio Canarias) has been designed as a diffraction limited instrument that will offer broad and narrow band imaging and integral field spectroscopy (IFS) capabilities with low, intermediate and high spectral resolutions to operate in the wavelength range 0.9 - 2.5 μm. The integral field unit is based on a monolithic image slicer based on the University of Florida FISICA. Both, the imaging mode and IFS observing modes will use the same Rockwell 2K×2K detector. FRIDA will be based at a Nasmyth focus of GTC, behind the GTCAO system. The FRIDA optical design, stray light analysis, tolerance analysis and manufacturing feasibility are described in this contribution.

  13. Determination of boron as boric acid by automatic potentiometric titration using Gran plots [in pressurized water reactor coolant

    International Nuclear Information System (INIS)

    Midgley, D.; Gatford, C.

    1989-11-01

    Boron in PWR primary coolant and related waters may be determined as boric acid by titration with sodium hydroxide, using a glass electrode as a pH indicator. Earlier work has shown that this analysis can conveniently be carried out automatically with adequate precision and accuracy for routine use, although bias became apparent at the lowest concentrations tested. The latest titrators enable the titration data to be transformed mathematically to give two linear segments, before and after the end-point (Gran plots). The results are as precise as those from other titration methods (in which the end-point is found from the point of inflexion of a plot of pH against volume of titrant), but the bias at low concentrations is much reduced. This is achieved without extra time or involvement of the operator. (author)

  14. Labor conflict, general strikes and dynamics of trade union organizations in the Gran La Plata 1969-1972

    Directory of Open Access Journals (Sweden)

    Agustín Nava

    2017-07-01

    Full Text Available This paper is inscribed within studies on the history of the labor movement during the years '60 and '70 in Argentina and aims to analyze the cycle of general strikes and labor conflictivity that took place more specifically between the years 1969-1972 on a particular region: the Gran La Plata. Through a qualitative and quantitative analysis we will approach the dynamics of general strikes and their impact on our study region, as a kind of struggle that allows us to analyze the different tendencies and forms assumed by the conflict, the degrees of unity within the labor movement, the dynamics of trade unions, alliances with other social forces and the relationship with the state. Therefore, this article contributes to study not only certain specific dynamics of labor conflictivity in our study region, but also the more general cycle of social protest and political radicalization that took place in Argentina during the sixties and seventies

  15. Adubação nitrogenada de sorgo granífero consorciado com capim em sistema de plantio direto

    Directory of Open Access Journals (Sweden)

    Gustavo Pavan Mateus

    2011-10-01

    Full Text Available O objetivo deste trabalho foi avaliar o efeito do manejo da adubação nitrogenada sobre a cultura do sorgo granífero, cultivado solteiro e em consócio com capim-marandu e capim-mombaça, e determinar a produtividade de matéria seca das forrageiras, nos anos agrícolas 2003/2004 e 2004/2005, em plantio direto. Foi utilizado o delineamento experimental em blocos ao acaso, em arranjo fatorial 3x5, com quatro repetições. Os tratamentos consistiram de três sistemas de cultivo de sorgo granífero (solteiro e consorciado com capim-marandu ou capim-mombaça, na linha de semeadura e cinco manejos de adubação nitrogenada: 30-70; 70-30; 50-50; 100-0; e 0-100 kg ha-1 de N, quantidades aplicadas na semeadura e na cobertura, respectivamente. O cultivo consorciado não afetou a nutrição nem a produtividade de grãos de sorgo. Apenas no primeiro ano de cultivo, o parcelamento 50-50 kg ha-1 de N proporcionou maior produtividade de grãos. O manejo da palhada interferiu no estabelecimento do sorgo no segundo ano de cultivo, e diminuiu a produtividade de grãos. As maiores doses de N aplicadas em cobertura elevaram a produtividade de matéria seca do capim-marandu e, as aplicadas em semeadura, a elevaram no capim-mombaça.

  16. Groundwater intensive exploitation and mining in Gran Canaria and Tenerife, Canary Islands, Spain: Hydrogeological, environmental, economic and social aspects.

    Science.gov (United States)

    Custodio, Emilio; Cabrera, María Del Carmen; Poncela, Roberto; Puga, Luis-Olavo; Skupien, Elzbieta; Del Villar, Alberto

    2016-07-01

    Intensive exploitation and continuous consumption of groundwater reserves (groundwater mining) have been real facts for decades in arid and semiarid areas. A summary of experience in the hydrogeological, economic, social and ethical consequences of groundwater intensive and mining exploitation in Gran Canaria and Tenerife Islands, in the Canarian Archipelago, is presented. Groundwater abstraction is less than recharge, but a significant outflow of groundwater to the sea cannot be avoided, especially in Tenerife, due to its younger volcanic coastal formations. Consequently, the intensive aquifer groundwater development by means of wells and water galleries (tunnels) has produced a groundwater reserve depletion of about 2km(3). Should current groundwater abstraction cease, the recovery time to close-to-natural conditions is from decades to one century, except in the mid and high elevations of Tenerife, where this recovery is not possible as aquifer formations will remain permanently drained by the numerous long water galleries. The socio-economic circumstances are complex due to a long standing history of water resources exploitation, successive social changes on each island, and well-established groundwater water trading, with complex relationships that affect water governance and the resulting ethical concerns. Gran Canaria and Tenerife are in an advanced groundwater exploitation stage and have a large water demand. They are good examples that allow drawing guidelines to evaluate groundwater development on other small high islands. After presenting the hydrogeological background, the socio-economic results are discussed to derive general knowledge to guide on water governance. Copyright © 2016 Elsevier B.V. All rights reserved.

  17. [Clinical-epidemiological study of Bordetella pertussis infection in the Gran Canaria island in the period, 2008-2016].

    Science.gov (United States)

    Iglesias, Laura; Casabella Pernas, Antonio; Hernández Febles, Melisa; Colino Gil, Elena; Eisman Maraver, Alicia; Pena López, María José

    2017-12-06

    Describe the epidemiological and clinical pattern of Bordetella pertussis infection (whooping cough) among hospitalised infants less than one year-old in a paediatric hospital in Gran Canaria. A retrospective review of the patient hospital records was performed, and recording only those with a microbiological diagnosis of pertussis infection detected using polymerase chain reaction, from January 2008 to December 2016. A total of 110 patients were identified, of which 105 (95.4%) were less than 6 months-old, and 59.1% were males. The annual incidence of hospital admissions was estimated between 13.7 to 425.0 cases per 100,000 infants <12 months old, with 2peaks in 2011 and 2015. Household members were the main potential sources of infection. Main clinical features were pertussis cough associated with signs of catarrh, cyanosis, and lymphocytosis. Complications occurred in 15.4% of the patients (mainly pneumonia), but the outcome was favourable in all the cases. A lower age and non-vaccination were associated with an increased risk of developing complications (P<.05). Viral co-infection occurred in 31.6% of infants diagnosed with pertussis. The incidence of pertussis has increased in the last years in Gran Canaria, with a lower development of complications and mortality rates compared with the previous period. Lower age and non-vaccination status are considered risk factors for developing complications. Vaccination in pregnant women will probably lead to a decline in the incidence in the future, especially in infants younger than 6 months. Copyright © 2017. Publicado por Elsevier España, S.L.U.

  18. Gran propiedad y productividad agrícola en el campo del sur de España

    Directory of Open Access Journals (Sweden)

    Martín Martín, Victor O.

    2008-06-01

    Full Text Available The agrarian sector continues being very important in the Spanish regions of Andalusia and Estremadura. The strategies of the great property have organized and organize the agrarian dominant systems in both regions. We try to relate the above mentioned strategies to the scanty productivity of the agriculture of the South of Spain. The hypothesis is to demonstrate that the productive capacities of Andalusia and Estremadura are underdeveloped and that the combination of the agriculture industrialized and the new sustainable agriculture are diminishing furthermore her productivity. The great owner, the laborer "tied" to the land and the stagnation of the work strengths are three ingredients that explain the lag of the South of Spain.

    El sector agrario sigue siendo muy importante en las regiones españolas de Andalucía y Extremadura. Las estrategias de la gran propiedad han organizado y organizan los sistemas agrarios dominantes en ambas regiones. Intentamos relacionar dichas estrategias con la escasa productividad de la agricultura del Sur de España. La hipótesis de partida es demostrar que las capacidades productivas de Andalucía y Extremadura están subdesarrolladas y, además, que la combinación de la agricultura industrializada con la que incorpora los nuevos planteamientos de la agricultura sostenible están disminuyendo aún más su productividad. El gran propietario como “señorito”, el jornalero “atado” a la tierra y el estancamiento de las fuerzas productivas son los tres ingredientes que explican el atraso del sur de España.

  19. J0815+4729: A Chemically Primitive Dwarf Star in the Galactic Halo Observed with Gran Telescopio Canarias

    Science.gov (United States)

    Aguado, David S.; González Hernández, Jonay I.; Allende Prieto, Carlos; Rebolo, Rafael

    2018-01-01

    We report the discovery of the carbon-rich hyper metal-poor unevolved star J0815+4729. This dwarf star was selected from SDSS/BOSS as a metal-poor candidate and follow-up spectroscopic observations at medium resolution were obtained with the Intermediate dispersion Spectrograph and Imaging System (ISIS) at William Herschel Telescope and the Optical System for Imaging and low-intermediate-Resolution Integrated Spectroscopy (OSIRIS) at Gran Telescopio de Canarias. We use the FERRE code to derive the main stellar parameters, {T}{eff}=6215+/- 82 K, and {log}g=4.7+/- 0.5, an upper limit to the metallicity of [Fe/H] ≤ ‑5.8, and a carbon abundance of [C/Fe] ≥ +5.0, while [α /{Fe}]=0.4 is assumed. The metallicity upper limit is based on the Ca II K line, which at the resolving power of the OSIRIS spectrograph cannot be resolved from possible interstellar calcium. The star could be the most iron-poor unevolved star known and also be among the ones with the largest overabundances of carbon. High-resolution spectroscopy of J0815+4729 will certainly help to derive other important elemental abundances, possibly providing new fundamental constraints on the early stages of the universe, the formation of the first stars, and the properties of the first supernovae. Based on observations made with the Gran Telescopio Canarias (GTC), installed in the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrofísica de Canarias, on the island of La Palma. Program ID GTC90-15B and the Discretionary Director Time GTC03-16ADDT and also based on observations made with the William Herschel Telescope (WHT).

  20. Engineering students' experiences from physics group work in learning labs

    Science.gov (United States)

    Strøm Mellingsæter, Magnus

    2014-01-01

    Background: This paper presents a case study from a physics course at a Norwegian university college, investigating key aspects of a group-work project, so-called learning labs, from the participating students' perspective. Purpose: In order to develop these learning labs further, the students' perspective is important. Which aspects are essential for how the students experience the learning labs, and how do these aspects relate to the emergence of occurrences termed joint workspace, i.e. the maintenance of content-related dialogues within the group? Programme description: First year mechanical engineering students attended the learning labs as a compulsory part of the physics course. The student groups were instructed to solve physics problems using the interactive whiteboard and then submit their work as whiteboard files. Sample: One group of five male students was followed during their work in these learning labs through one term. Design and methods: Data were collected as video recordings and fieldwork observation. In this paper, a focus group interview with the students was the main source of analysis. The interpretations of the interview data were compared with the video material and the fieldwork observations. Results: The results show that the students' overall experience with the learning labs was positive. They did, however, point to internal aspects of conflicting common and personal goals, which led to a group-work dynamics that seemed to inhibit elaborate discussions and collaboration. The students also pointed to external aspects, such as a close temporal proximity between lectures and exercises, which also seemed to inhibit occurrences termed joint workspace. Conclusions: In order to increase the likelihood of a joint workspace throughout the term in the learning labs, careful considerations have to be made with regard to timing between lectures and exercises, but also with regard to raising the students' awareness about shared and personal goals.

  1. La relevancia empírica de los distritos industriales marshallianos y los sistemas productivos locales manufactureros de gran empresa en España

    Directory of Open Access Journals (Sweden)

    Rafael Boix

    2011-01-01

    Full Text Available El presente trabajo presenta la revisión de los mapas de distritos industriales y sistemas productivos locales manufactureros de gran empresa de España siguiendo la nueva metodología ISTAT 2006. El artículo presenta la metodología de identificación de sistemas locales de trabajo, distritos industriales, sistemas productivos locales manufactureros de gran empresa y los resultados completos de su aplicación para España.

  2. Proyecto básico de infraestructuras hidráulicas urbanas en la Urbanización Gran Godella, Godella (Valencia): Red de abastecimiento.

    OpenAIRE

    ALEIXANDRE BADÍA, DAVID

    2017-01-01

    [ES] La Urbanización Gran Godella es un sector urbanizable de nuevo desarrollo ubicado en el Término Municipal de Godella (Valencia) y con una superficie total de 239.531,96 m2. El objeto del presente proyecto es el diseño de la red de abastecimiento de agua para la Urbanización Gran Godella. Se debe abastecer a 1.186 viviendas, un centro comercial, un edificio de oficinas y un colegio de 500 plazas, además del riego de 38.982 m2 de jardines y el sistema contra incendios. Se diseña u...

  3. Un Gran Señor e Inmejorable Profesor. Gonzalo Esguerra Gómez (24 de enero de 1902 – 21 de diciembre de 1989)

    OpenAIRE

    Alberto Albornoz-Plata

    1991-01-01

    En esta sesión solemne de la Academia Nacional de Medicina, para recordar al ilustre académico Gonzalo Esguerra Gómez sólo me referiré en estos 15 minutos a algunas facetas de su prodigiosa personalidad, en especial su aspecto humano y su labor como gran docente y escritor médico. Su característica principal fué su gran caballerosidad, siempre afable, cordial, listo a prestar cualquier servicio y todo lo hacía con entusiasmo y optimismo.

    Su orden era proverbial y es...

  4. Análisis del mercado de productos derivados de créditos/acciones antes y durante la Gran Recesión

    OpenAIRE

    Frigola Alcalde, Hector

    2010-01-01

    La crisis que empezó el año 2007 se ha convertido en la mayor recesión desde la Gran Depresión de los años 1930, una crisis que muchos especialistas han bautizado con el nombre de Gran Recesión. Este trabajo estudia las causas que han llevado al mercado de capital a semejante colapso global, analizando tres aspectos clave en el desarrollo de la crisis: los Credit Default Swaps (CDS), la titularización y las estrategias de un hedge fund, Topaz, que utilizaba un modelo cuantitativo para la valo...

  5. A Conceptual Review of Lab-Based Aggression Paradigms

    Directory of Open Access Journals (Sweden)

    Randy J. McCarthy

    2018-01-01

    Full Text Available Aggression is often defined as a behavior that is done with the intent to harm an individual who is believed to want avoid being harmed (e.g., Baron & Richardson, 1994. Accordingly, social scientists have developed several tasks to study aggression in laboratory settings; tasks that we refer to as “lab-based aggression paradigms.” However, because of the legal, ethical, and practical issues inherent in provoking aggression within the confines of a laboratory setting, it is feasible to study only very mildly harmful aggression. The current conceptual review examines the criteria that are necessary to study aggression in a laboratory setting, discusses the strengths and weaknesses of several new and/or commonly-used lab-based aggression paradigms, and offers recommendations for the future of lab-based aggression research. Collectively, we hope the current discussion helps researchers to describe the contributions and limitations of lab-based aggression research and, ultimately, helps to improve the informativeness of lab-based aggression research.

  6. Lab-on-a-chip pathogen sensors for food safety.

    Science.gov (United States)

    Yoon, Jeong-Yeol; Kim, Bumsang

    2012-01-01

    There have been a number of cases of foodborne illness among humans that are caused by pathogens such as Escherichia coli O157:H7, Salmonella typhimurium, etc. The current practices to detect such pathogenic agents are cell culturing, immunoassays, or polymerase chain reactions (PCRs). These methods are essentially laboratory-based methods that are not at all real-time and thus unavailable for early-monitoring of such pathogens. They are also very difficult to implement in the field. Lab-on-a-chip biosensors, however, have a strong potential to be used in the field since they can be miniaturized and automated; they are also potentially fast and very sensitive. These lab-on-a-chip biosensors can detect pathogens in farms, packaging/processing facilities, delivery/distribution systems, and at the consumer level. There are still several issues to be resolved before applying these lab-on-a-chip sensors to field applications, including the pre-treatment of a sample, proper storage of reagents, full integration into a battery-powered system, and demonstration of very high sensitivity, which are addressed in this review article. Several different types of lab-on-a-chip biosensors, including immunoassay- and PCR-based, have been developed and tested for detecting foodborne pathogens. Their assay performance, including detection limit and assay time, are also summarized. Finally, the use of optical fibers or optical waveguide is discussed as a means to improve the portability and sensitivity of lab-on-a-chip pathogen sensors.

  7. Dynamics of Growth and Development of Banana (Musa AAA Simmonds cvs. Gran Enano and Valery Dinámica del Crecimiento y Desarrollo del Banano (Musa AAA Simmonds cvs. Gran Enano y Valery

    Directory of Open Access Journals (Sweden)

    Ana María Martínez Acosta

    2011-12-01

    Full Text Available This research was conducted in the banana zone on Urabá (Colombia, whith cvs. Gran Enano and Valery. Since planting, each three to four leaves sprouted, three plants per variety were sampled, each corresponding to a repetition. These were separated into its different organs and the total dry matter was estimated. Each cv. was analyzed on a growth curve. The dry matter accumulation on both cvs. is adjusted to the typical sigmoid curve of the plant growth. In the exponential phase, the corm was the main source of assimilates for the development; while in the lineal and senescence phase, the pseudo-stem and leaves were the reservoir organs; when the bunch is formed, such reserves were sent to this drain. In general, while the development progressed, the vegetative organs did not show any dry matter lost, only reduction in the assimilates accumulation rate; unlike the bunch that from its emission kept a high rate, leading the fruit to represent, in the harvest season, almost 50% of the total dry matter of the plant.El estudio se realizó en la zona bananera de Urabá (Colombia; con los cvs. Gran Enano y Valery. A partir de la siembra, cada tres a cuatro hojas emitidas, se muestrearon tres plantas por cv., cada una correspondiente a una repetición. Estas se separaron en sus diferentes órganos y se estimó la materia seca total. Se analizó cada cv. a partir de curvas de crecimiento. La acumulación de materia seca en ambos cvs. se ajustó al modelo típico de la curva sigmoidea del crecimiento vegetal. En la fase exponencial, el cormo fue la principal fuente de asimilados para el desarrollo;mientras que en la fase lineal y de senescencia,el pseudotallo y hojas fueron órganos reservorio; al formarse el racimo, tales reservas fueron enviadas a ese sumidero. En general, a medida que avanzaba el desarrollo, los órganos vegetativos no presentaron pérdidas de materia seca, solo disminución en la tasa de acumulación de asimilados;a diferencia del

  8. RiskLab - a joint Teaching Lab on Hazard and Risk Management

    Science.gov (United States)

    Baruffini, Mi.; Baruffini, Mo.; Thuering, M.

    2009-04-01

    In the future natural disasters are expected to increase due to climatic changes that strongly affect environmental, social and economical systems. For this reason and because of the limited resources, governments require analytical risk analysis for a better mitigation planning. Risk analysis is a process to determine the nature and extent of risk by estimating potential hazards and evaluating existing conditions of vulnerability that could pose a potential threat or harm to people, property, livelihoods and environment. This process has become a generally accepted approach for the assessment of cost-benefit scenarios; originating from technical risks it is being applied to natural hazards for several years now in Switzerland. Starting from these premises "Risk Lab", a joint collaboration between the Institute of Earth Sciences of the University of Applied Sciences of Southern Switzerland and the Institute for Economic Research of the University of Lugano, has been started in 2006, aiming to become a competence centre about Risk Analysis and Evaluation. The main issue studied by the lab concerns the topic "What security at what price?" and the activities follow the philosophy of the integral risk management as proposed by PLANAT, that defines the process as a cycle that contains different and interrelated phases. The final aim is to change the population and technician idea about risk from "defending against danger" to "being aware of risks" through a proper academic course specially addressed to young people. In fact the most important activity of the laboratory consists in a degree course, offered both to Engineering and Architecture students of the University of Applied Sciences of Southern Switzerland and Economy Students of the University of Lugano. The course is structured in two main parts: an introductive, theoretical part, composed by class lessons, where the main aspects of natural hazards, risk perception and evaluation and risk management are presented

  9. Lab-scale Technology for Biogas Production from Lignocellulose Wastes

    Directory of Open Access Journals (Sweden)

    Lukáš Krátký

    2012-01-01

    Full Text Available Currently-operating biogas plants are based on the treatment of lignocellulose biomass, which is included in materials such as agriculture and forestry wastes, municipal solid wastes, waste paper, wood and herbaceous energy crops. Lab-scale biogas technology was specially developed for evaluating the anaerobic biodegrability and the specific methane yields of solid organic substrates. This technology falls into two main categories – pretreatment equipments, and fermentation equipments. Pretreatment units use physical principles based on mechanical comminution (ball mills, macerator orhydrothermal treatment (liquid hot water pretreatment technology. The biochemical methane potential test is used to evaluate the specific methane yields of treated or non-treated organic substrates. This test can be performed both by lab testing units and by lab fermenter.

  10. Integration of remote lab exercises into standard course packages

    Directory of Open Access Journals (Sweden)

    T. Zimmer

    2007-08-01

    Full Text Available We propose to integrate remote lab exercises into standard course packages. A standard course package consists in classroom sessions, exercise sessions and lab sessions, the whole completed by homework for following up and preparing the different sessions. Homework is crucial in the learning process and we have developed a dedicated platform integrating four levels of activities accompanying each lesson. The first level recalls the learning objectives and learning contents of each lesson. The corresponding exercises are proposed in a second level. An auto-evaluation can be done in a third level. Finally, lab exercises are proposed for each topic in the forth level. The whole is organised in a hierarchical tree structure for easy navigation and a good overview.

  11. Living labs design and assessment of sustainable living

    CERN Document Server

    Guerra-Santin, Olivia; Lockton, Dan

    2017-01-01

    This book presents the results of a multi-annual project with sustainable Living Labs in the United Kingdom, Sweden, Germany and the Netherlands. Living Labs – as initiated by the authors – have proved to be very promising research, design, co-creation and communication facilities for the development and implementation of sustainable innovations in the home. The book provides an inspiring introduction to both the methodology and business modelling for the Living Lab facilities. Understanding daily living at home is key to designing products and services that support households in their transition to more sustainable lifestyles. This book not only explores new ways of gaining insights into daily practices, but also discusses developing and testing design methods to create sustainable solutions for households. These new methods and tools are needed because those available are either ineffective or cause rebound-effects. Intended for researchers and designers with an interest in the transition to sustainable...

  12. EUSO@TurLab: An experimental replica of ISS orbits

    Directory of Open Access Journals (Sweden)

    Bertaina M.

    2015-01-01

    Full Text Available The EUSO@TurLab project is an on-going activity aimed to reproduce atmospheric and luminous conditions that JEM-EUSO will encounter on its orbits around the Earth. The use of the TurLab facility, part of the Department of Physics of the University of Torino, allows the simulation of different surface conditions in a very dark and rotating environment in order to test the response of JEM-EUSO's sensors and sensitivity. The experimental setup currently in operation has been used to check the potential of the TurLab facility for the above purposes, and the acquired data will be used to test the concept of JEM-EUSO's trigger system.

  13. Promoting Metacognition in Introductory Calculus-based Physics Labs

    Science.gov (United States)

    Grennell, Drew; Boudreaux, Andrew

    2010-10-01

    In the Western Washington University physics department, a project is underway to develop research-based laboratory curriculum for the introductory calculus-based course. Instructional goals not only include supporting students' conceptual understanding and reasoning ability, but also providing students with opportunities to engage in metacognition. For the latter, our approach has been to scaffold reflective thinking with guided questions. Specific instructional strategies include analysis of alternate reasoning presented in fictitious dialogues and comparison of students' initial ideas with their lab group's final, consensus understanding. Assessment of student metacognition includes pre- and post- course data from selected questions on the CLASS survey, analysis of written lab worksheets, and student opinion surveys. CLASS results are similar to a traditional physics course and analysis of lab sheets show that students struggle to engage in a metacognitive process. Future directions include video studies, as well as use of additional written assessments adapted from educational psychology.

  14. Lab-on-a-chip technologies for stem cell analysis.

    Science.gov (United States)

    Ertl, Peter; Sticker, Drago; Charwat, Verena; Kasper, Cornelia; Lepperdinger, Günter

    2014-05-01

    The combination of microfabrication-based technologies with cell biology has laid the foundation for the development of advanced in vitro diagnostic systems capable of analyzing cell cultures under physiologically relevant conditions. In the present review, we address recent lab-on-a-chip developments for stem cell analysis. We highlight in particular the tangible advantages of microfluidic devices to overcome most of the challenges associated with stem cell identification, expansion and differentiation, with the greatest advantage being that lab-on-a-chip technology allows for the precise regulation of culturing conditions, while simultaneously monitoring relevant parameters using embedded sensory systems. State-of-the-art lab-on-a-chip platforms for in vitro assessment of stem cell cultures are presented and their potential future applications discussed. Copyright © 2014 Elsevier Ltd. All rights reserved.

  15. Lab on a chip technologies for algae detection: a review.

    Science.gov (United States)

    Schaap, Allison; Rohrlack, Thomas; Bellouard, Yves

    2012-08-01

    Over the last few decades, lab on a chip technologies have emerged as powerful tools for high-accuracy diagnosis with minute quantities of liquid and as tools for exploring cell properties in general. In this paper, we present a review of the current status of this technology in the context of algae detection and monitoring. We start with an overview of the detection methods currently used for algae monitoring, followed by a review of lab on a chip devices for algae detection and classification, and then discuss a case study based on our own research activities. We conclude with a discussion on future challenges and motivations for algae-oriented lab on a chip technologies. Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  16. Temperatura de emplazamiento de las ignimbritas Roque Nublo (Gran Canaria, Islas Canarias mediante técnicas paleomagneticas

    Directory of Open Access Journals (Sweden)

    Mangas, J.

    1994-04-01

    Full Text Available The main characteristic of the Pliocene volcanic phase of Gran Canaria. the Cycle 11 or Roque Nublo. is the building of a central stratovolcano. probably reaching more than 2.500 m aboye sea level. Among the most relevant deposits associated to this volcanic edifice are the pyroclastic breccia-type deposits. generally known as «Roque Nublo agglomerates or breccias». These deposits have been gene rally interpreted as pyroclastic flows. However, their emission. transport and depositional mechanisms are hitherto poorly understood. In the present work. the analysis of the paleomagnetic characteristics of the lithic and juvenile fragments and the matrix of these pyroclastic deposits have provide sorne important constraints in their evolution and depositional temperatures. The Roque Nublo ignimbrites seem to have been deposited at temperatures below 300 ºC. In such circumstances. hot water originated by the condensation of interstitial water vapor reacted with the cineritic glass fraction, giving place to zeolite neomineralizations. The relatively fast cooling experimented by the ignimbrites after their emission. as deduced from the paleomagnetic analysis, can be explained by the high proportion of lithics and the intcraction of water as an important factor in the triggering of the eruptions in which the ignimbrites were originated.En Gran Canaria, el Ciclo 11 o Roque Nublo. de edad Pliocena. se caracteriza por la construcción de un estratovolcán que pudo alcanzar al menos 2.500 m de altura. Entre los materiales emitidos por este edificio volcánico destacan unos depósitos piroclásticos de aspecto brechoide. generalmente conocidos como «aglomerados o brechas Roque Nublo». Aunque la mayoría de los autores que han estudiado estos depósitos han coincidido en asociarlos a coladas piroclásticas (por consiguiente. son depósitos ignimbríticos. no se conocían bien sus mecanismos de emisión. transporte y depósito. En este trabajo se

  17. Examination of mobile phones in a university forensic lab environment

    Science.gov (United States)

    Luttenberger, Silas; Kröger, Knut; Creutzburg, Reiner

    2011-06-01

    The aim of this article is to show forensic investigation methods for mobile phones to students in a university forensic lab environment. Students have to learn the usefulness of forensic procedures to ensure evidence collection, evidence preservation, forensic analysis, and reporting. Open source tools as well as commercial forensic tools for forensic investigation of modern mobile (smart) phones are used. It is demonstrated how important data stored in the mobile device are investigated. Different scenarios of investigations are presented that are well-suited for forensics lab work in university.

  18. Remembering the early days of the Met Lab

    International Nuclear Information System (INIS)

    Katz, J.J.

    1990-01-01

    The Met Lab was set up by the war-time Manhattan District, US Corp of Engineers to (i) find a system using normal uranium in which a chain reaction would occur; (ii) to show that if such a chain reaction did occur, it would be possible to separate plutonium chemically from the uranium matrix and the fission products formed in the chain reactions; and (iii) to prepare plans for the large-scale production of plutonium. Chemistry Section C-1 of the Met Lab was assigned the responsibility for developing separation methods for plutonium production on the industrial scale. This report describes some aspects of daily life in Section C-1

  19. Touch-enabled Programming for the Lab of Things

    OpenAIRE

    Dong, Zheng; Samuel, Arjmand

    2013-01-01

    Lab of Things (LoT, lab-of-things.com) is a research platform for interconnection, programming, and large scale deployment of devices and sensors. These devices and sensors can then be used for deployment of field studies in a variety of research areas including elderly care, energy management, and the like. LoT is built on top of HomeOS, a middle-ware component, making interconnection of a wide range of devices possible. LoT also provides cloud storage and remote monitoring capabilities. Tra...

  20. An Overview of Dark Matter Experiments at Jefferson Lab

    International Nuclear Information System (INIS)

    Boyce, James R

    2012-01-01

    Dark Matter research at Jefferson Lab started in 2006 with the LIght Pseudoscalar and Scalar Search (LIPSS) collaboration to check the validity of results reported by the PVLAS collaboration. In the intervening years interest in dark matter laboratory experiments has grown at Jefferson Lab. Current research underway or in planning stages probe various mass regions covering 14 orders of magnitude: from 10 −6 eV to 100 MeV. This presentation will be an overview of our dark matter searches, three of which focus on the hypothesized A' gauge boson.

  1. NASA Dryden: Flight Loads Lab Capabilities and Mass Properties Testing

    Science.gov (United States)

    Wolfe, David Michael; Bakalyar, John A.

    2011-01-01

    This presentation covers the basic capabilities of the Dryden Flight Loads Lab. It also covers in detail the mass properties capabilities of the loads lab, focusing on the recent mass properties testing of the X-48B, and the recent tests of the Dynamic Inertia Measurement method (DIMM). Presentation focuses on the test methods and issues discovered during the mass properties testing of the X-48B leading to the requirement of new instrumentation on all conventional mass properties testing. Presentation also focuses on development of DIMM for replacement of conventional mass properties tests.

  2. Design and Evaluation of an Instructional Solar Energy Technologies Lab

    Directory of Open Access Journals (Sweden)

    Christina B. Class

    2011-09-01

    Full Text Available This paper presents a design for a solar energy lab that allows students to plan, install and evaluate different system architectures and gain relevant practical experiences. The addressed learning outcomes are analyzed based on the 13 learning outcomes defined by the Accreditation Board for Engineering and Technology (ABET as well as based on the taxonomy levels of the cognitive domain after Bloom. In this paper we present a sample lab assignment and map its tasks to the learning outcomes and cognitive domains. First results of qualitative student feedback are equally presented.

  3. Innovative Use of a Classroom Response System During Physics Lab

    Science.gov (United States)

    Walgren, Jay

    2011-01-01

    More and more physics instructors are making use of personal/classroom response systems or "clickers." The use of clickers to engage students with multiple-choice questions during lecture and available instructor resources for clickers have been well documented in this journal.1-4 Newer-generation clickers, which I refer to as classroom response systems (CRS), have evolved to accept numeric answers (such as 9.81) instead of just single "multiple-choice" entries (Fig. 1). This advancement is available from most major clicker companies and allows for a greater variety of engaging questions during lecture. In addition, these new "numeric ready" clickers are marketed to be used for student assessments. During a test or quiz, students' answers are entered into their clicker instead of on paper or Scantron® and immediately absorbed by wireless connection into a computer for grading and analysis. I recognize the usefulness and benefit these new-generation CRSs provide for many instructors. However, I do not use my CRS in either of the aforementioned activities. Instead, I use it in an unconventional way. I use the CRS to electronically capture students' lab data as they are performing a physics lab (Fig. 2). I set up the clickers as if I were going to use them for a test, but instead of entering answers to a test, my students enter lab data as they collect it. In this paper I discuss my use of a classroom response system during physics laboratory and three benefits that result: 1) Students are encouraged to "take ownership of" and "have integrity with" their physics lab data. 2) Students' measuring and unit conversion deficiencies are identified immediately during the lab. 3) The process of grading students' labs is simplified because the results of each student's lab calculations can be pre-calculated for the instructor using a spreadsheet. My use of clickers during lab can be implemented with most clicker systems available to instructors today. The CRS I use is the e

  4. Integrated lasers for polymer Lab-on-a-Chip systems

    DEFF Research Database (Denmark)

    Mappes, Timo; Vannahme, Christoph; Grosmann, Tobias

    2012-01-01

    We develop optical Lab-on-a-Chips on different platforms for marker-based and label-free biophotonic sensor applications. Our chips are based on polymers and fabricated by mass production technologies to integrate microfluidic channels, optical waveguides and miniaturized lasers.......We develop optical Lab-on-a-Chips on different platforms for marker-based and label-free biophotonic sensor applications. Our chips are based on polymers and fabricated by mass production technologies to integrate microfluidic channels, optical waveguides and miniaturized lasers....

  5. Professional penetration testing creating and operating a formal hacking lab

    CERN Document Server

    Wilhelm, Thomas

    2009-01-01

    PART I - Setting Up. Chapter 1: Introduction. Chapter 2: Ethics and Hacking. Chapter 3: Hacking as a Career. Chapter 4: Setting up Your Lab. Chapter 5: Creating and Using PenTest Targets in Your Lab. Chapter 6: Methodologies. Chapter 7: PenTest Metrics. Chapter 8: Management of a PenTest. PART II - Running a PenTest. Chapter 9: Information Gathering. Chapter 10: Vulnerability Identification. Chapter 11: Vulnerability Verification. Chapter 12: Compromising a System and Privilege Escalation. Chapter 13: Maintaining Access. Chapter 14: Covering Your Tracks. PART III - Wrapping Everything Up. Chap

  6. Chagas' disease in Aboriginal and Creole communities from the Gran Chaco Region of Argentina: Seroprevalence and molecular parasitological characterization.

    Science.gov (United States)

    Lucero, R H; Brusés, B L; Cura, C I; Formichelli, L B; Juiz, N; Fernández, G J; Bisio, M; Deluca, G D; Besuschio, S; Hernández, D O; Schijman, A G

    2016-07-01

    Most indigenous ethnias from Northern Argentina live in rural areas of "the Gran Chaco" region, where Trypanosoma cruzi is endemic. Serological and parasitological features have been poorly characterized in Aboriginal populations and scarce information exist regarding relevant T. cruzi discrete typing units (DTU) and parasitic loads. This study was focused to characterize T. cruzi infection in Qom, Mocoit, Pit'laxá and Wichi ethnias (N=604) and Creole communities (N=257) inhabiting rural villages from two highly endemic provinces of the Argentinean Gran Chaco. DNA extracted using Hexadecyltrimethyl Ammonium Bromide reagent from peripheral blood samples was used for conventional PCR targeted to parasite kinetoplastid DNA (kDNA) and identification of DTUs using nuclear genomic markers. In kDNA-PCR positive samples from three rural Aboriginal communities of "Monte Impenetrable Chaqueño", minicircle signatures were characterized by Low stringency single primer-PCR and parasitic loads calculated using Real-Time PCR. Seroprevalence was higher in Aboriginal (47.98%) than in Creole (27.23%) rural communities (Chi square, p=4.e(-8)). A low seroprevalence (4.3%) was detected in a Qom settlement at the suburbs of Resistencia city (Fisher Exact test, p=2.e(-21)).The kDNA-PCR positivity was 42.15% in Aboriginal communities and 65.71% in Creole populations (Chi square, p=5.e(-4)). Among Aboriginal communities kDNA-PCR positivity was heterogeneous (Chi square, p=1.e(-4)). Highest kDNA-PCR positivity (79%) was detected in the Qom community of Colonia Aborigen and the lowest PCR positivity in two different surveys at the Wichi community of Misión Nueva Pompeya (33.3% in 2010 and 20.8% in 2014). TcV (or TcII/V/VI) was predominant in both Aboriginal and Creole communities, in agreement with DTU distribution reported for the region. Besides, two subjects were infected with TcVI, one with TcI and four presented mixed infections of TcV plus TcII/VI. Most minicircle signatures

  7. Reproductive phenology of 233 species from four herbaceous–shrubby communities in the Gran Sabana Plateau of Venezuela

    Science.gov (United States)

    Ramírez, Nelson; Briceño, Herbert

    2011-01-01

    Background and aims Herbaceous–shrubby communities in the Gran Sabana (Great Savanna) Plateau of Venezuela grow under non-zonal conditions. We speculated that this would produce specific patterns of reproductive phenology within these different soil–climate–vegetation associations. Specifically, we tested the hypothesis that the reproductive phenology patterns of four herbaceous–shrubby communities are determined by climate, plant life-forms and soil properties. Methodology The reproductive phenology of 233 plant species of the Gran Sabana Plateau of the Venezuelan Guayana Highlands was studied taking into account their life-forms (i.e. trees, shrubs, climbers, annual herbs, perennial herbs, epiphytes and parasites/hemiparasites) in four herbaceous–shrubby communities: (i) shrubland, (ii) secondary bush, (iii) savanna and (iv) broad-leaved meadow. Patterns of flowering, and occurrence of unripe fruit and ripe fruit were studied at two levels of intensity for 24 months within a 5-year span. Two phenological records for each month of the year and between two and four replicates for each community type were made. Randomly selected 2–3 ha plots were used. General phenological patterns were established using phenological phase. High-intensity phenological patterns were established using >25% of individuals in each plot to establish times of high abundance of flowers, and presence of unripe fruit and/or ripe fruit on individual plants. This generated phenological peaks for each species. Principal results Non-seasonality of general flowering and unripe fruiting in each of the four communities was related to non-seasonal flowering and unripe fruiting patterns in the plant life-forms studied and to low variation in precipitation throughout the year. Flowering activity in the shrubland and broad-leaved meadow peaked twice. The bush community had only one flowering peak while the savanna gave a non-seasonal flowering peak. The peak unripe fruiting pattern was not

  8. Factores asociados a la no adherencia al tratamiento antirretroviral de gran actividad en adultos infectados con el VIH-sida

    Directory of Open Access Journals (Sweden)

    Óscar Alvis

    2009-12-01

    Full Text Available Introducción: La no adherencia al tratamiento antirretroviral de gran actividad (Targa es la principal causa de fracaso terapéutico. Objetivos: Determinar la prevalencia y los factores asociados a la no adherencia al Targa en adultos infectados con el VIH-sida. Diseño: Estudio transversal. Institución: Servicio de Infectología, Hospital Nacional Arzobispo Loayza. Participantes: Pacientes infectados con el VIH que se encontraban recibiendo tratamiento antirretroviral. Intervenciones: A pacientes infectados con el VIH que se encontraban recibiendo tratamiento antirretroviral en el hospital, se aplicó un cuestionario estructurado, elaborado en función a instrumentos que evalúan la adherencia y factores asociados. Para determinar la asociación, se empleó las pruebas de chi cuadrado y t de student, se estableció un nivel de significación estadística p<0,05, y para calcular el riesgo se utilizó el OR, con intervalos de confianza de 95%. Se realizó análisis de regresión logística. Principales medidas de resultados: No adherencia al tratamiento antirretroviral de gran actividad. Resultados: Se encuestó 465 personas; la edad promedio fue 36,8±9,1 años; 64,1% era varón. El 35,9% de los encuestados resultó ser no adherente. Los factores independientemente asociados a la no adherencia fueron: ser homosexual/bisexual (OR: 3,85, IC95% 1,98 a 7,51, tener una baja calidad de vida relacionada a la salud (OR: 6,22, IC95% 3,47 a 11,13, poco apoyo social (OR: 5,41, IC95% 3,17 a 9,22, no tener domicilio fijo (OR 3,34, IC95% 1,93 a 5,79, tener morbilidad psíquica (OR 2,93, IC95% 1,78 a 4,82 y tener mayor tiempo en tratamiento (OR 1,04, IC95% 1,02 a 1,07. Conclusiones: La prevalencia de no adherencia fue mayor a la reportada previamente en este mismo hospital, pero similar a la encontrada en diferentes estudios, pese a la heterogeneidad de los mismos. Los factores de tipo psicosocial fueron los que influyeron de forma más importante en la

  9. Los trabajadores de la carne del Gran Rosario. Organización gremial y conflictividad laboral 1969-1976

    Directory of Open Access Journals (Sweden)

    Vogelmann, Verónica

    2013-09-01

    Full Text Available En este artículo se analiza la dinámica del gremio de la carne del Gran Rosario durante los años 1969-1976, período de intensificación de la lucha de clases y los conflictos laborales con el surgimiento de organizaciones y dirigentes que van a mantener una presencia significativa en el espacio gremial a lo largo de décadas. Se abordan las experiencias de lucha y las formas organizativas de los trabajadores desde una perspectiva teórico – metodológica que otorga centralidad a las relaciones laborales que se desarrollan cotidianamente en los espacios de trabajo y a los procesos de institucionalización sindical. Analizamos, entonces: 1-los conflictos laborales que adquirieron resonancia pública y otros que se produjeron en el ‘suelo de la fábrica’; 2-el surgimiento y consolidación de la dirigencia sindical; 3-la presencia de diversas agrupaciones opositoras a dicha conducción; y 4- las distintas formas de organización obrera en los lugares de trabajo, como delegados y paritarios. Para ello, se privilegia la indagación en torno a las significaciones construidas por los sujetos participantes de las experiencias de lucha y organización gremial, que recabamos a través de entrevistas, triangulándolas con fuentes secundarias como diarios locales y boletines gremiales.

  10. Organización territorial urbana y transporte público masivo: Metrópolis del Gran Mendoza

    Directory of Open Access Journals (Sweden)

    María Emilia García Schilardi

    2013-11-01

    Full Text Available Existe acuerdo entre los expertos en transporte, planificación y urbanismo que la movilidad urbana es consecuencia de la organización espacial que adopta la ciudad y viceversa. Es decir, existe una estrecha relación entre las políticas de transporte y el ordenamiento del territorio. El objetivo de este trabajo es caracterizar la relación existente en la actualidad entre la organización territorial urbana de la zona del Gran Mendoza y el sistema de transporte masivo que opera en ella. Se estudia, particularmente, la existencia o no de las condiciones urbanas que propenden al uso del transporte masivo, ya que se considera que éste es de fundamental importancia para el desarrollo sustentable de las ciudades. Con este fin se utiliza el modelo conceptual de ciudades orientadas al transporte masivo, propuesto por Julio Pozueta (2000, y se aplica al caso en estudio. Se revisan también trabajos de otros autores tanto los referidos a la zona analizada, como aquellos de carácter más general que dan luz sobre las tendencias urbanas en el mundo y en particular en las ciudades de Latinoamérica.

  11. El «Edificio Central» en las Palmas de Gran Canaria – España

    Directory of Open Access Journals (Sweden)

    Ruiz Duerto, A.

    1972-11-01

    Full Text Available A description is given of the program, characteristics, and building solutions for this unique building, situated in downtown Las Palmas. The building complex is composed of two underground levels for parking, a ground-floor and mezzanine for commercial purposes, and open plaza with swimming pool, dressing rooms, cafeteria, restaurant, dance spot, playground, and a block of 15 floors containing 137 apartments of varying size arranged so as to minimize sun overexposure and maximize privacy. The structure is of reinforced concrete and lightweight slabs, and enjoys quality fixtures which assure excellent functioning.Se describe el programa, características y solución constructiva de este edificio singular, situado en el centro cívico de Las Palmas de Gran Canaria. Se compone de: — dos plantas de sótano para estacionamiento de vehículos; planta baja comercial; — entreplanta comercial; — planta libre ajardinada con piscina, vestuarios-aseos, cafetería, restaurante, club de baile, juego de niños, guardería, etc.; — un bloque de 15 plantas con 137 apartamentos, de superficie variada, y dispuesto de forma que evite perjuicios de soleamiento y vistas a los edificios circundantes. Estructura de hormigón armado y losas aligeradas, con toda suerte de instalaciones que aseguren su perfecto funcionamiento.

  12. The Large Millimeter Telescope/El Gran Telescopio Milimétrico: A New Instrument for Astrobiology

    Science.gov (United States)

    Irvine, William M.; Carramiñana, Alberto; Carrasco, Luis; Schloerb, F. Peter

    2003-12-01

    The Instituto Nacional de Astrofísica, Óptica y Electrónica in Mexico and the University of Massachusetts in the U.S.A. are collaborating to build the world's largest radio telescope that operates at short millimeter wavelengths. This facility, known as the Large Millimeter Telescope (LMT) or el Gran Telescopio Milimétrico (GTM), is being sited at an altitude of 4600 m on Volcan Sierra Negra in the Mexican state of Puebla. The telescope will be a fully steerable dish with a diameter of 50 m and a surface consisting of 180 panels that are actively adjusted under computer control to correct for deformations due to gravity and temperature gradients. Instruments will include focal plane arrays to image both continuum and spectral line emission from celestial sources. The LMT/GTM will be an extremely powerful facility for studies encompassing almost all areas of astronomy, including astrobiology. In particular, the high sensitivity, angular resolution, and mapping speed will enable detailed investigations of the organic chemistry of interstellar molecular clouds, protoplanetary disks, and comets.

  13. Centro de Arte «Christ's Hospital» Horsham Gran Bretaña

    Directory of Open Access Journals (Sweden)

    Howell, -

    1980-05-01

    Full Text Available This work consists of a theatre and classrooms, apart from the already existing music school, which a large «U» is formed, with the theatre in the centre. The program comprises 9 history, geography and economics classrooms, a library and a seminary. The music school, for its part, contains 10 classrooms, 41 individual practice rooms, an orchestra or choir hall, a library and a small recitals centre. Finally, the theatre has a variable distribution system, which permits its capacity to be increased from 450 to 580 seats.

    Esta obra comprende un teatro y salas de clase, además de la escuela de música ya existente, con la que configuran una gran «U» que sitúa el teatro en su parte central. El programa comprende 9 salas de clase de historia, geografía, y economía, una biblioteca y un seminario. Por su parte la escuela de música contiene 10 salas de clase, 41 salas de prácticas individuales, un salón para orquesta o coros, una biblioteca y un pequeño centro de recitales. Por último el teatro dispone de un sistema de distribución variable, que permite aumentar su capacidad de 450 a 580 asientos.

  14. Groundwater salinity and hydrochemical processes in the volcano-sedimentary aquifer of La Aldea, Gran Canaria, Canary Islands, Spain.

    Science.gov (United States)

    Cruz-Fuentes, Tatiana; Cabrera, María del Carmen; Heredia, Javier; Custodio, Emilio

    2014-06-15

    The origin of the groundwater salinity and hydrochemical conditions of a 44km(2) volcano-sedimentary aquifer in the semi-arid to arid La Aldea Valley (western Gran Canaria, Spain) has been studied, using major physical and chemical components. Current aquifer recharge is mainly the result of irrigation return flows and secondarily that of rainfall infiltration. Graphical, multivariate statistical and modeling tools have been applied in order to improve the hydrogeological conceptual model and identify the natural and anthropogenic factors controlling groundwater salinity. Groundwater ranges from Na-Cl-HCO3 type for moderate salinity water to Na-Mg-Cl-SO4 type for high salinity water. This is mainly the result of atmospheric airborne salt deposition; silicate weathering, and recharge incorporating irrigation return flows. High evapotranspiration produces significant evapo-concentration leading to relative high groundwater salinity in the area. Under average conditions, about 70% of the water used for intensive agricultural exploitation in the valley comes from three low salinity water runoff storage reservoirs upstream, out of the area, while the remaining 30% derives from groundwater. The main alluvial aquifer behaves as a short turnover time reservoir that adds to the surface waters to complement irrigation water supply in dry periods, when it reaches 70% of irrigation water requirements. The high seasonality and intra-annual variability of water demand for irrigation press on decision making on aquifer use by a large number of aquifer users acting on their own. Copyright © 2014 Elsevier B.V. All rights reserved.

  15. Derivation of P-T paths from high-pressure metagranites - Examples from the Gran Paradiso Massif, western Alps

    Science.gov (United States)

    Massonne, Hans-Joachim

    2015-06-01

    Metamorphosed granites (SiO2 ≥ 70 wt.%) are, in fact, a common rock type in high pressure (HP) and ultrahigh pressure (UHP) terrains, but these rocks were rarely used to derive metamorphic P-T paths. To test the suitability of HP metagranites for such derivations, two metagranites from the Gran Paradiso Massif were studied applying elemental mapping of phengite and garnet and calculated P-T pseudosections contoured by various chemical and modal parameters. Both rocks contain phengite with maximum Si contents of about 3.42 Si per formula unit (pfu) and 3.55 Si pfu in cores, and accessory garnet which is compositionally zoned. Garnet core compositions are rich in grossular component (XCa up to 0.72). Only a rough P-T path could be derived with peak pressures below 2 GPa because, for instance, Si contents in phengite become geobarometrically insensitive at HP conditions, when biotite is not anymore stable. A test of the pseudosection approach to a metagranite from the North Qaidam UHP metamorphic belt resulted in an ambiguous finding. In fact, compositions of garnet and phengite in this rock are indicative of both UHP and specific HP conditions ( 1.3 GPa, 530 °C), but the latter conditions fit the entire mineralogical observations better.

  16. Caracterización de cyberbullying en el gran Santiago de Chile, en el año 2010

    Directory of Open Access Journals (Sweden)

    Jorge Varela T.

    Full Text Available El estudio caracteriza el cyberbullying en estudiantes del gran Santiago de Chile (2010. Se aplicó una encuesta de autorreporte (Cuestionario de Experiencias de Internet a 1.357 estudiantes entre 7º básico a IVº medio. El diseño de muestra fue no probabilístico por cuotas en 32 establecimientos educacionales, ponderados según género, curso y tipo de dependencia. El 50% fueron hombres, con un promedio de edad 15 años (DS= 1,82 años. Resultados: El 11,4% reportó haber sido víctima de algún tipo de cyberbullyingy el 12,5% victimario. No se encontraron diferencias significativas en las víctimas según sexo, curso y tipo de dependencia. Sólo los hombres reportan identificarse en forma más frecuente con los victimarios que las mujeres. Conclusiones: El cyberbullying es un fenómeno existente en la realidad chilena, siendo - mayormente - homogéneo en su presentación. Dado esto, se plantean nuevos desafíos y preguntas respecto a sus consecuencias tanto para los estudiantes como para todo el sistema escolar.

  17. New structures for goat corrals to control peridomestic populations of Triatoma infestans (Hemiptera: Reduviidae in the Gran Chaco of Argentina

    Directory of Open Access Journals (Sweden)

    David Eladio Gorla

    2013-05-01

    Full Text Available Goat production is an important economic activity for rural communities in the Gran Chaco of Argentina. Goat corrals are important for the survival of peridomestic populations of Triatoma infestans. This study evaluated the impact of modifying the traditional structure of goat corrals on T. infestans populations and goat productivity in the region of Los Llanos (La Rioja. Thirty-nine experimental corrals were constructed and 57 traditional corrals were used as controls. We evaluated the infestations of the control and experimental corrals for five years following construction of the structures. The results showed that the new structures did not prevent the colonization, although it enhanced the detection of infestation at low densities of T. infestans. No significant difference was found in T. infestans population abundance between control and experimental corrals, probably because of the different detectability in the two types of structures, especially among the small nymphs. Although goat productivity average was higher in experimental than in control corrals, no significant difference was found because of high variability. The new structures can be used as a complement to promote the development of rural communities. Acceptability and adoption of the new corrals by the owners was high, as the enclosures offered better protection for the goats, increased growth of kids and facilitated herd handling.

  18. Striking resilience of an island endemic bird to a severe perturbation: the case of the Gran Canaria blue chaffinch

    Directory of Open Access Journals (Sweden)

    Moreno, Á. C.

    2018-01-01

    Full Text Available Evidence regarding population trends of endangered species in special protection areas and their recovery ability from catastrophic disturbances is scarce. We assessed the population trend of the Gran Canaria blue chaffinch (Fringilla polatzeki, a habitat specialist endemic to the pine forest of Inagua in the Canary Islands, following a devastating wildfire in July 2007. Using a standardized census program that accounts for detectability, we have monitored the population trend of the species since Inagua was declared a Strict Nature Reserve in 1994. The breeding population density of the blue chaffinch remained stable in Inagua from the beginning of the monitoring program in 1994 until the year before the wildfire. However, in spring 2008, the population density decreased by half with respect to density in the preceding years. Since 2008, the population has gradually increased, reaching its highest recorded density in 2016 (15.8 birds/km2.This represents an average annual increase of 23.7 %, indicating impressive resilience to catastrophic events. The creation of Inagua as a strict nature reserve did not therefore increase the global population or protect the blue chaffinch against a demographic crisis but probably prevented a deepening of the demographic crisis or further declines. Except for the two years immediately after the severe wildfire of 2007, the population density of the blue chaffinch in Inagua has remained relatively stable at around 9–16 birds/km2, the lowest recorded abundance for a small woodland passerine in the Western Palearctic.

  19. Estudios arqueológicos de pre construcción del Gran Canal Interoceánico de Nicaragua

    Directory of Open Access Journals (Sweden)

    Sagrario Balladares-Navarro

    2017-03-01

    Full Text Available Los resultados obtenidos en las dos primeras jornadas de campo de los estudios arqueológicos de pre construcción del Gran Canal Interoceánico de Nicaragua (GCIN, dan cuenta de la transformación de un espacio en el litoral Pacífico sur del país, ya que en él fueron encontradas varias elevaciones artificiales alrededor de un manglar, expresión de una alta y dinámica producción de sal en el pasado, iniciada en el 800 dC. El rescate del patrimonio arqueológico en la ruta proyectada se inició en noviembre de 2015 desde la UNAN-Managua, financiado por la concesionaria HKND Group y el CNU en cumplimiento a las leyes vigentes nacionales e internacionales. Es un primer paso en contribución al Plan Nacional de Desarrollo Humano, ya que entre otras cosas, se trata de recuperar la historia de los pueblos originarios que existieron a lo largo de esta ruta y de quienes aún se conoce poco.

  20. La Gran Guerra en la historiografía argentina. Balance y perspectivas de investigación

    Directory of Open Access Journals (Sweden)

    María Inés Tato

    2014-04-01

    Full Text Available A pesar del impacto que la Gran Guerra tuvo en la sociedad argentina, esta temática ha suscitado un escaso interés entre los historiadores, que sólo ha comenzado a revertirse en la última década. Este artículo ofrece un examen de las principales líneas de investigación que han abordado la cuestión: la historia económica, la historia diplomática y, más recientemente, la historia social y la historia cultural. Asimismo, propone algunas reflexiones acerca de posibles perspectivas de investigación que contribuyan a una exploración más sistemática de esta problemática.   Abstract   Despite the impact of the Great War on Argentine society, this subject has inspired a scarce interest among historians, which has only started to be reverted in the last decade. This paper offers an examination of the main research lines that have dealt with the matter: economic history, diplomatic history, and, more recently, social history and cultural history. It also suggests some reflections on possible research perspectives which could contribute to a more systematic exploration of this problem.

  1. Causes of Admission for Raptors to the Tafira Wildlife Rehabilitation Center, Gran Canaria Island, Spain: 2003-13.

    Science.gov (United States)

    Montesdeoca, Natalia; Calabuig, Pascual; Corbera, Juan A; Orós, Jorge

    2016-07-01

    We report the causes of morbidity of 2,458 free-living raptors admitted to the Tafira Wildlife Rehabilitation Center on Gran Canaria Island, Spain, during 2003-13. The seasonal cumulative incidences were investigated while considering estimates of the wild populations in the region. These methods were used as a more accurate approach to assess the potential ecologic impact of different causes of morbidity. The most frequently admitted species were the Eurasian Kestrel ( Falco tinnunculus ; 53.0%), the Eurasian Long-eared Owl ( Asio otus canariensis; 28.1%), the Canary Islands Common Buzzard ( Buteo buteo insularum; 8.0%), and the Eurasian Barn Owl ( Tyto alba ; 4.4%). The most frequent causes of admission were trauma (33.8%), orphaned-young birds (21.7%), unknown (18.4%), and metabolic/nutritional disease (11.1%). Local morbidity caused by glue trapping and entanglement in burr bristlegrass (Setaria adhaerens) had prevalences of 5.0% and 1.8%, respectively. The highest number of admissions during the breeding and nonbreeding seasons was observed for the Eurasian Barn Owl and the Barbary Falcon ( Falco pelegrinoides ), respectively, mainly due to trauma of unknown origin.

  2. Dalla distruzione alla liberazione. L’epopea della negritud in Changó, el gran putas di Manuel Zapata Olivella

    Directory of Open Access Journals (Sweden)

    irina Bajini

    2013-06-01

    Full Text Available The African diaspora - caused by the Atlantic slave trade - presented the same historical and spiritual features of the Biblical Exodus, but it was exacerbated by the fact that the colonial system carried out a planned cancellation of the identity of the enslaved subjects. However, the American negro, through escapes and rebellions before the Independence and thereafter through a reworking of his ancestors' oral, musical and religious traditions, from an anonymous “pieza” strived to become a person again. Fernando Ortiz and Alejo Carpentier, two intellectuals of European origin, during the 20th century discovered and gave dignity to the "third root of America" in the Caribbean area. At the end of the century, the slave trade and black slave’s redemption epics have been brought back up literarily by an afro-descending and militant writer. Changó, el gran putas, by the Columbian Manuel Zapata Olivella (1920-2004, is a majestic description of the slave’s apocalypse in the Americas, in its meaning of apotastasy (i.e. the world going back to its primordial perfection, according to the prophecy of the orichas’s king, even if some Andean authors indigenistas, such as Cromwell Jara or Gregorio Martínez, have often visited the Afroamerican cosmogonic world.

  3. New foot remains from the Gran Dolina-TD6 Early Pleistocene site (Sierra de Atapuerca, Burgos, Spain).

    Science.gov (United States)

    Pablos, Adrián; Lorenzo, Carlos; Martínez, Ignacio; Bermúdez de Castro, José María; Martinón-Torres, María; Carbonell, Eudald; Arsuaga, Juan Luis

    2012-10-01

    This paper presents and describes new foot fossils from the species Homo antecessor, found in level TD6 of the site of Gran Dolina (Sierra de Atapuerca, Burgos, Spain). These new fossils consist of an almost complete left talus (ATD6-95) and the proximal three-quarters of a right fourth metatarsal (ATD6-124). The talus ATD6-95 is tentatively assigned to Hominin 10 of the TD6 sample, an adult male specimen with which the second metatarsal ATD6-70+107 (already published) is also tentatively associated. Analysis of these fossils and other postcranial remains has made possible to estimate a stature similar to those of the specimens from the Middle Pleistocene site of Sima de los Huesos (Sierra de Atapuerca, Burgos, Spain). The morphology of the TD6 metatarsals does not differ significantly from that of modern humans, Neanderthals and the specimens from Sima de los Huesos. Talus ATD6-95, however, differs from the rest of the comparative samples in being long and high, having a long and wide trochlea, and displaying a proportionally short neck. Copyright © 2012 Elsevier Ltd. All rights reserved.

  4. Conflicto y Modernización en la Gran Minería del Cobre (1950-1970

    Directory of Open Access Journals (Sweden)

    Ángela Vergara Marshall

    2004-12-01

    Full Text Available Este artículo analiza el proceso de modernización en la Gran Minería del Cobre en Chile entre 1950 y 1971. En primer lugar, se examinan las causas, nacionales e internacionales, que llevaron a las empresas del cobre a introducir cambios en la forma de producción, organización de la fuerza de trabajo y labores administrativas. En segundo lugar, se analiza el impacto que tuvo la modernización en las condiciones de vida y de trabajo de los mineros del cobre. En términos generales, este artículo plantea que aunque la modernización minera aumentó la productividad de esta industria, al mismo tiempo esta agudizó el conflicto laboral en la minería y deterioró la posición de las empresas del cobre en Chile.This article focuses on the process of modernization in the Large Scale Copper Industry between 1950 and 1971. First, it looks at the national and international factors that led copper companies to introduce substantial changes in the organization of production, the labor force, and administration. Second, it analyzes the impact of modernization on working, economic, and living conditions in the copper mines. In a time of increasing nationalism and political radicalization, these schemes not only led to intense confrontation with labor unions but also undermined the position of the US copper companies in Chile.

  5. Occurrence of eight UV filters in beaches of Gran Canaria (Canary Islands). An approach to environmental risk assessment.

    Science.gov (United States)

    Sánchez Rodríguez, A; Rodrigo Sanz, M; Betancort Rodríguez, J R

    2015-07-01

    Due to the growing concern about human health effects of ultraviolet (UV) radiation, the use of UV filters has increased in recent decades. Unfortunately, some common UV filters are bioaccumulated in aquatic organisms and show a potential for estrogenic activity. The aim of the present study is to determine the presence of some UV filters in the coastal waters of six beaches around Gran Canaria Island as consequence of recreational seaside activities. Eight commonly used UV filters: benzophenone-3 (BP-3), octocrylene (OC), octyl-dimethyl-PABA (OD-PABA), ethylhexyl methoxy cinnamate (EHMC), homosalate (HMS), butyl methoxydibenzoyl methane (BMDBM), 4-methylbenzylidene camphor (4-MBC) and diethylamino hydroxybenzoyl hexyl benzoate (DHHB), were monitored and, with the exception of OD-PABA, all were detected in the samples collected. 99% of the samples showed some UV filters and concentration levels reached up to 3316.7 ng/L for BP-3. Environmental risk assessment (ERA) approach showed risk quotients (RQ) higher than 10, which means that there is a significant potential for adverse effects, for 4-MBC and EHMC for those samples with highest levels of UV filters. Copyright © 2015 Elsevier Ltd. All rights reserved.

  6. Pabellón de química del Royal Holloway College - Egham (Gran Bretaña

    Directory of Open Access Journals (Sweden)

    Colquhoun & Miller, Arquitectos

    1972-06-01

    Full Text Available This building, situated in Egham, Surrey, has been designed and built bearing in mind its true nature, i.e. part of a large university complex in a continual state of development. For this reason it was necessary to think in terms of a structure and modulation which could be easily extended in the future without interrupting Its running too much. The unit consists of a series of blocks in step formation, which fits in perfectly with the landscape. There are offices, laboratories, research areas, etc., and at the end of these, separated from the rest, are two auditoriums or lecture theatres.Este edificio —situado en Eghatn, Surrey— ha sido proyectado y realizado teniendo en cuenta las características propias del tipo, es decir, formando parte de un gran complejo universitario en continuo desarrollo, lo que obliga a pensar en una estructura y una modulación que permitan sucesivas y fáciles ampliaciones, alterando muy poco la marcha del Centro. El conjunto está constituido por una serie de bloques escalonados —que se adaptan perfectamente al terreno— en los que se han ubicado los despachos, laboratorios, zonas de investigación, etcétera, al final de los cuales, y separados de las demás dependencias, están situados los dos auditorios o aulas magnas.

  7. Reconversión industrial, gran empresa y efectos territoriales: El caso del sector automotriz en México

    Directory of Open Access Journals (Sweden)

    José Antonio Vieyra Medrano

    2000-05-01

    Full Text Available El proceso de reconversión industrial que se desarrolla en México manifiesta un impacto diferencial, al incorporar sólo ciertos territorios y determinados sectores económicos a la "nueva lógica de producción global". Esto hace que los patrones territoriales, imperantes hasta los años setenta, se vean modificados. El estudio parte del análisis de la industria manufacturera y reconoce a las empresas de gran tamaño como las de mayor capacidad para asumir dicha reestructuración. Finalmente, se estudia al sector automotriz, asumiéndolo como uno de los más importantes dentro del fenómeno de la globalización, ya que liga realidades nacionales y regionales con el actual funcionamiento de una economía mundial.In Mexico it is developing a process of rationalization of industry. It is expressed by a diferential impact, since it incorporates only some regions and certain economic sectors to the "new global production logic". This makes changes in the land patterns prevailing until the 1970 decade. The analysis leaves from manufacturing industry, identifying the big firms as the more qualified to assume that reestructuration. At last, the automobile sector is studied taking it as a more important ones into globalization phenomenon. So, it links national and regional realities with the actual world economy function.

  8. Ionic Liquids and Green Chemistry: A Lab Experiment

    Science.gov (United States)

    Stark, Annegret; Ott, Denise; Kralisch, Dana; Kreisel, Guenter; Ondruschka, Bernd

    2010-01-01

    Although ionic liquids have been investigated as solvents for many applications and are starting to be used in industrial processes, only a few lab experiments are available to introduce students to these materials. Ionic liquids have been discussed in the context of green chemistry, but few investigations have actually assessed the degree of…

  9. ThinkSpace: Spatial Thinking in Middle School Astronomy Labs

    Science.gov (United States)

    Udomprasert, Patricia S.; Goodman, Alyssa A.; Plummer, Julia; Sadler, Philip M.; Johnson, Erin; Sunbury, Susan; Zhang, Helen; Dussault, Mary E.

    2016-01-01

    Critical breakthroughs in science (e.g., Einstein's Theory of General Relativity, and Watson & Crick's discovery of the structure of DNA), originated with those scientists' ability to think spatially, and research has shown that spatial ability correlates strongly with likelihood of entering a career in STEM. Mounting evidence also shows that spatial skills are malleable, i.e., they can be improved through training. We report early work from a new project that will build on this research to create a series of middle schools science labs called "Thinking Spatially about the Universe" (ThinkSpace), in which students will use a blend of physical and virtual models (in WorldWide Telescope) to explore complex 3-dimensional phenomena in space science. In the three-year ThinkSpace labs project, astronomers, technologists, and education researchers are collaborating to create and test a suite of three labs designed to improve learners' spatial abilities through studies of: 1) Moon phases and eclipses; 2) planetary systems around stars other than the Sun; and 3.) celestial motions within the broader universe. The research program will determine which elements in the labs will best promote improvement of spatial skills within activities that emphasize disciplinary core ideas; and how best to optimize interactive dynamic visualizations to maximize student understanding.

  10. The Jefferson Lab 12 GeV Program

    Energy Technology Data Exchange (ETDEWEB)

    Montgomery, Hugh [Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)

    2017-04-19

    The Jefferson Lab facilities have undergone a substantial upgrade, both of accelerator, CEBAF, and of the experimental installations. We will discuss the progress to completion of these facilities, the status of accelerator commissioning, and the recent first operations for physics. We will then flesh out the anticipated exciting physics program of the next several years.

  11. Head first: Living labs for ad-hoc search evaluation

    NARCIS (Netherlands)

    Balog, K.; Kelly, L.; Schuth, A.; Li, J.; Wang, X.S.

    2014-01-01

    The information retrieval (IR) community strives to make evaluation more centered on real users and their needs. The living labs evaluation paradigm, i.e., observing users in their natural task environments, offers great promise in this regard. Yet, progress in an academic setting has been limited.

  12. SHORT REPORT Practical considerations in planning a cath-lab ...

    African Journals Online (AJOL)

    This room hosts the C-arm power supply cabinets, as well as X-ray tube heat converters and any other computer hardware necessary for the vascular lab. The control room should be state of the art with huge glass windows that overlook the vascular laboratory so that effective handling of software occurs during a procedure.

  13. Fungal Culture Test: MedlinePlus Lab Test Information

    Science.gov (United States)

    ... Tools Español You Are Here: Home → Lab Test Information → Fungal Culture Test URL of this page: https://medlineplus.gov/ ... of Wisconsin Hospitals and Clinics Authority; c2017. Health Information: Fungal Culture for Athlete's Foot: Exam Overview [updated 2016 Oct ...

  14. Fermentation art and science at the Nordic Food Lab

    DEFF Research Database (Denmark)

    Reade, Benedict; de Valicourt, Justine; Evans, Joshua David

    2015-01-01

    The Nordic Food Lab (NFL) is a self-governed foundation based in Copenhagen, Denmark. The aim of NFL is to investigate food diversity and deliciousness and to share the results in an open-source format. We combine scientific and cultural approaches with culinary techniques from around the world...

  15. Formalising Living Labs to achieve organisational objectives in emerging economies

    CSIR Research Space (South Africa)

    Smit, D

    2011-05-01

    Full Text Available by the identification of four dimensions of living labs which is then used to evaluate three existing LLs to indicate the relevance for choosing a LL as methodology for doing the projects as well as the dimensions of LL within each LL at this research centre. This focus...

  16. A Lab Experience to Illustrate the Physicochemical Principles of Detergency

    Science.gov (United States)

    Poce-Fatou, J. A.; Bethencourt-Nunez, M.; Moreno, C.; Pinto-Ganfornina, J. J.; Moreno-Dorado, F. J.

    2008-01-01

    This article presents a lab experience to study detergency from a physicochemical point of view intended for undergraduate students. By means of a simple experimental device, we analyze the influence of the surfactant concentration in both distilled water and tap water. Our method is based on the measurement of diffuse reflectances of polyester…

  17. Novel applications of Lactic Acid Bacteria (LAB) and Recombinant ...

    African Journals Online (AJOL)

    Lactic acid bacteria (LAB), present in intestines of most animals and humans, plays an important role as starters of fermented food products where it acts as a biopreservative, preventing spoilage by pathogenic microorganisms through acidification, competition for essential nutrients, and / or production of inhibitory ...

  18. Do cheaters in the lab also cheat in the field?

    NARCIS (Netherlands)

    Potters, Jan; Stoop, J.T.R.

    In this paper, we study the correlation between cheating in the lab and cheating in the field. We conduct a laboratory experiment using a variant of the Mind game (Jiang, 2013). Payoffs above a certain threshold are indicative of cheating behavior. Subjects are paid their earnings by bank transfer.

  19. Towards Third-Generation Living Lab Networks in Cities

    Directory of Open Access Journals (Sweden)

    Seppo Leminen

    2017-11-01

    Full Text Available Many cities engage in diverse experimentation, innovation, and development activities with a broad variety of environments and stakeholders to the benefit of citizens, companies, municipalities, and other organizations. Hence, this article discusses such engagement in terms of next-generation living lab networks in the city context. In so doing, the study contributes to the discussion on living labs by introducing a framework of collaborative innovation networks in cities and suggesting a typology of third-generation living labs. Our framework is characterized by diverse platforms and participation approaches, resulting in four distinctive modes of collaborative innovation networks where the city is: i a provider, ii a neighbourhood participator, iii a catalyst, or iv a rapid experimenter. The typology is based on an analysis of 118 interviews with participants in six Finnish cities and reveals various ways to organize innovation activities in the city context. In particular, cities can benefit from innovation networks by simultaneously exploiting multiple platforms such as living labs for innovation. We conclude by discussing implications to theory and practice, and suggesting directions for future research.

  20. City Labs as vehicles for innovation in urban planning processes

    NARCIS (Netherlands)

    Kemp, René; Scholl, Christian

    2016-01-01

    This paper assesses the role of urban experiments for local planning processes through a case-based analysis of the city lab of Maastricht. In conjunction with this, the article offers three contributions, as additional elements. Firstly, the paper develops a set of defining characteristics of city