A discussion on advanced methods of energy conversion- Magnetohydrodynamic power generation - First results of the Électricité de France 8 MW m.h.d. experimental rig at Centre de Recherches et d’Essais des Renardieres

1967 ◽  
Vol 261 (1123) ◽  
pp. 401-428 ◽  
Keyword(s):  
Power Generation ◽  
First Year ◽  
Experimental Plant ◽  
Correct Interpretation ◽  
Paper Briefly ◽  
Research Teams ◽  
Full Size ◽  
Physical Conditions ◽  
First Results ◽  
Experimental Rig

During its first year of service the m.h.d. experimental rig at Renardieres has been used for various studies on the performance of different sized m.h.d. generators and of the technology of electrodes and insulating walls. However, these experiments are not yet finished, and this report aims only at describing the present state of the most interesting studies and at comparing the results with those published by other research teams. The paper briefly describes the characteristics of the experimental plant and the conditions under which m.h.d. experiments have been carried out. Changes in the electrical and physical conditions of ionized gases during their passage through the test section have been studied, as a knowledge of these conditions is necessary for the correct interpretation of conditions in full size m.h.d. generators. Studies on m.h.d. generator materials have included insulating walls, ‘hot’ electrodes and ‘ cold ’ electrodes. However, only the studies on ‘ cold ’ electrodes are reported in detail as they are the most advanced to date; the studies on ‘ hot ’ electrodes have not progressed far, and for insulating walls, the use of cold ' peg walls ’ developed by Avco has been adopted. Finally some results of studies on generator operation are discussed.

The Concept of Text Type and Its Relevance to Translator Training1

Target ◽  
2000 ◽  
Vol 12 (2) ◽  
pp. 283-295 ◽  
Author(s):  
Isabel García Izquierdo
Keyword(s):  
Mother Tongue ◽  
The Other ◽  
First Year ◽  
Classroom Activity ◽  
Correct Interpretation ◽  
Paper Briefly ◽  
First Year Students ◽  
Text Type ◽  
Text Types ◽  
The One

Abstract The aim of this paper is to show the relevance that a correct interpretation of text types in the mother tongue has for the correct development of the translating activity by translator trainees. This paper briefly analyzes the results of a classroom activity in which students were asked to identify the text-type ascription of two texts. They were first-year students in the Translation and Interpreting program at the Jaume I University in Castellón (Spain). The results confirm, on the one hand, existing differences in the comprehension and interpretation of text types and, on the other hand, that the confusion that exists in practice between the concepts of text type and genre (Hatim and Mason 1990) may also be observed in the case of these students.

scholarly journals JET AND HIGH PT MEASUREMENTS WITH THE ALICE EXPERIMENT

2011 ◽  
Vol 20 (07) ◽  
pp. 1533-1538
Author(s):  
◽  
CHRISTIAN KLEIN-BÖSING
Keyword(s):  
Particle Production ◽  
Center Of Mass ◽  
Heavy Ion ◽  
First Year ◽  
Alice Experiment ◽  
Elementary Reactions ◽  
Ion Collisions ◽  
New Energy ◽  
First Results ◽  
Medium Influence

Since the beginning of 2010 the LHC provides p + p collisions at the highest center of mass energies to date, allowing to study high p T particle production and jet properties in a new energy regime. For a clear interpretation and the quantification of the medium influence in heavy-ion collisions on high p T observables a detailed understanding of these elementary reactions is essential. We present first results on the observation of jet-like properties with the ALICE experiment and discuss the performance of jet reconstruction in the first year of data taking.

First results from Goddard High-Resolution Spectrograph - C I, S I, and CO toward XI Persei and the physical conditions in diffuse clouds

1991 ◽  
Vol 377 ◽  
pp. L61 ◽  
Author(s):  
Andrew M. Smith ◽  
Frederick C. Bruhweiler ◽  
David L. Lambert ◽  
Blair D. Savage ◽  
Jason A. Cardelli ◽  
...  
Keyword(s):  
High Resolution ◽  
Physical Conditions ◽  
First Results ◽  
Diffuse Clouds

Heat Transfer and Flow on the First-Stage Blade Tip of a Power Generation Gas Turbine: Part 2—Simulation Results

1999 ◽  
Vol 122 (2) ◽  
pp. 272-277 ◽  
Author(s):  
A. A. Ameri ◽  
R. S. Bunker
Keyword(s):  
Heat Transfer ◽  
Power Generation ◽  
Computational Study ◽  
Transfer Coefficients ◽  
Large Power ◽  
Heat Transfer Coefficients ◽  
Blade Tip ◽  
Convective Heat Transfer Coefficients ◽  
Edge Separation ◽  
Experimental Rig

A combined experimental and computational study has been performed to investigate the detailed distribution of convective heat transfer coefficients on the first-stage blade tip surface for a geometry typical of large power generation turbines (>100 MW). This paper is concerned with the numerical prediction of the tip surface heat transfer. Good comparison with the experimental measured distribution was achieved through accurate modeling of the most important features of the blade passage and heating arrangement as well as the details of experimental rig likely to affect the tip heat transfer. A sharp edge and a radiused edge tip was considered. The results using the radiused edge tip agreed better with the experimental data. This improved agreement was attributed to the absence of edge separation on the tip of the radiused edge blade. [S0889-504X(00)01802-X]

scholarly journals Screening and Registering Patients with Asthma and Copd in Slovenian Primary Care: First Results / Presejanje In Registriranje Bolnikov Z Astmo In Kopb V Referenčnih Ambulantah Družinske Medicine: Prvi Rezultati

2015 ◽  
Vol 54 (3) ◽  
pp. 161-167 ◽  
Author(s):  
Tonka Poplas-Susič ◽  
Igor Švab ◽  
Darinka Klančar ◽  
Davorina Petek ◽  
Vlasta Vodopivec-Jamšek ◽  
...  
Keyword(s):  
Family Medicine ◽  
First Year ◽  
Chi Square ◽  
Copd Patients ◽  
Number Of Patients ◽  
The Family ◽  
Family Practices ◽  
First Results ◽  
The Difference ◽  
Two Phases

Abstract Aim. This study aimed to evaluate a new project of the Slovene Ministry of Health - the Family Medicine Model Practices (MPs) Project in Slovenia, and to show its effectiveness in the management of asthma and COPD by family medicine practice teams, consisting of a family physician, a nurse practitioner and a practice nurse. Methods. A total of 107 family practices with 203122 patients joined the project during the first year of its initiation. The effectiveness of the program in disease management was analysed in two phases according to the registration of family practices. The number of patients registered and the number of asthma and COPD patients (existing and newly detected) by model practice teams were being reported. Descriptive analyses were used to describe the study populations. Prevalence by diseases and phases was established after the initial round of data collection. Chi square (χ2) test was used to analyse the difference between the phases. Results. The frequency of asthma was 2.12%, while the frequency of COPD was 1.15% throughout the study period. For both diseases, more than 30% of patients were newly diagnosed. Conclusions. The project of implementing Family Medicine MPs in the area of COPD has given first positive results and the project is still ongoing to its full implementation.

scholarly journals Testing of Ceramic Stator Vanes to 2500 F (1371 C)

1975 ◽  
Author(s):  
A. N. Holden ◽  
S. E. Mumford ◽  
C. R. Booher
Keyword(s):  
Power Generation ◽  
Cyclic Tests ◽  
Full Size ◽  
Test Conditions ◽  
Edge Loading ◽  
End Caps ◽  
Complete Failure

Ceramic inlet vanes were tested in a full-size, eight-vane cascade rig to simulate power generation operation at 2200 and 2500 F (1204 and 1371 C). The 2200 F (1204 C) test, using only Si3N2 vanes, successfully completed over 100 start/stop cycles, except for some out-of-tolerance parts that caused edge loading. Initial 2500 F (1371 C) tests resulted in complete failure of the four carbide parts, while the four nitride parts remained funtional. Ramps up and down were somewhat more severe than for normal turbine operation, and all parts received debris impaction from an imploded combustor. Minor cracking occurred in only one nitride airfoil and two different nitride end caps. All LAS CERVIT C-140 insulator material was badly cracked after both test conditions. New insulator materials are being evaluated and cyclic tests are continuing.

scholarly journals The Extreme Outer Regions of Disk Galaxies: Star Formation and Metal Abundances

1999 ◽  
Vol 171 ◽  
pp. 196-203
Author(s):  
Annette Ferguson ◽  
Rosemary Wyse ◽  
Jay Gallagher
Keyword(s):  
Star Formation ◽  
Gas Phase ◽  
Massive Star ◽  
Spiral Galaxies ◽  
Disk Galaxies ◽  
Physical Conditions ◽  
First Results ◽  
Disk Evolution ◽  
Metal Abundances ◽  
Optical Radius

AbstractThe extreme outer regions of disk galaxies, lying at or beyond the classical optical radius defined by R25, present an opportunity to study star formation and chemical evolution under unique physical conditions, possibly reminscent of those which existed during the early stages of disk evolution. We present here some of the first results from a large study to measure star formation rates and metallicities in the extreme outer limits of a sample of nearby spiral galaxies. Despite their low gas column densities, massive star formation is often observed in these outer parts, but at an azimuthally–averaged rate much lower than that seen in the inner disk. Gas-phase O/H abundances of roughly 10% solar characterize the gas at 1.5–2 R25. The implications of our results for star formation ‘laws’ and models of disk evolution are discussed.

Soil properties, root responses and production of irrigated pasture on a red-brown earth after subsoil modification

2002 ◽  
Vol 42 (4) ◽  
pp. 453 ◽  
Author(s):  
S. J. Blaikie ◽  
J. R. Hirth ◽  
K. L. Greenwood ◽  
K. A. Olsson ◽  
K. E. Dellow ◽  
...  
Keyword(s):  
Organic Matter ◽  
Soil Surface ◽  
First Year ◽  
Initial Surface ◽  
Pasture Production ◽  
Physical Conditions ◽  
Penetrometer Resistance ◽  
Root Responses ◽  
And Function ◽  
Modified Soil

Soils used for growing irrigated pasture in northern Victoria have shallow (0.10-0.15 m) topsoils and dense, clay subsoils. Reducing soil limitations to root growth and function has the potential to increase pasture production. Therefore, subsoil modification treatments, comprising loosening and fragmentation of the B horizon to depths of 0.2, 0.4 and 0.6 m, the incorporation of calcium ameliorants, superphosphate and application of organic matter to the soil surface, were compared with unmodified soils and a 0.4 m deep topsoil, in a red-brown earth over a 2-year period (1994-96). Subsoil modification improved the physical condition of the soil. Air-filled porosity of the deep-modified soils (0.4 and 0.6 m deep), 24 h after irrigation, exceeded 15% at 0.1 and 0.3 m depths in both years, and was always higher than in the unmodified soils. Penetrometer resistance was markedly lower in the deep-modified subsoils in both years. Greater earthworm activity was associated with these improved soil physical conditions. However, the soil treatments did not result in greater root length or root mass beneath the pasture. In the first year, pasture yield was greater on the deep-modified soils (25-31 t DM/ha) than on the unmodified soils (19 t DM/ha). In the second year, the yield advantage of the deep-modified treatments decreased to 11%, despite the maintenance of improved soil physical conditions. In both years, pasture yields were highest where there was an initial surface application of 20 t DM/ha organic matter to a modified soil. We conclude that structural modification of the B horizon can increase pasture yields on this soil. However, further research is necessary to maintain these yield increases beyond the initial year and to develop more practical systems of soil modification.

Een Onderzoek Naar De Effecten Van Luistervaardigheidstraining

1985 ◽  
Vol 23 ◽  
pp. 7-14
Author(s):  
Heiko Anceaux
Keyword(s):  
Reading Ability ◽  
Vocabulary Knowledge ◽  
First Year ◽  
Light Weight ◽  
Grammatical Knowledge ◽  
Research Project ◽  
Whole School ◽  
School Year ◽  
First Results ◽  
Positive Results

This article discusses the first results of a research project carried out in a number of first-year forms in Dutch schools for secondary education. By the side of the regular programme for French, this research project offered a light-weight extra listening programme, while for the sake of comparison other classes were offered a light-weight extra reading programme. After a few months in an interim test the pupils' reading ability, grammatical knowledge and vocabulary knowledge were evaluated. As a rough conclusion of this interim test it can be stated that the reading programme has yielded the most positive results at this level of teaching. The results of the listening-programme on the other hand are as yet hardly spectacular. At the end of the research project, which will be carried out during one whole school year, a final test will be given.

Multi-decadal variability in long-range ENSO predictions (SEAS5-20C)

2020 ◽  
Author(s):  
Antje Weisheimer ◽  
Magdalena Balmaseda ◽  
Tim Stockdale
Keyword(s):  
Time Scales ◽  
Decadal Variability ◽  
Initial Conditions ◽  
Forecast Skill ◽  
First Year ◽  
Initial State ◽  
First Results ◽  
Forecasting System ◽  
Similar Good ◽  
Ocean Observations

<p>Motivated by the high skill in predicting ENSO on seasonal time scales with ECMWF’s seasonal forecasting system SEAS5 and by previous findings of multi-decadal variability in seasonal forecast skill of extratropical dynamics, we have carried out an extensive set of 24-month long coupled hindcasts from 1901 to 2010. The hindcasts were run with SEAS5 in reduced resolution and are initialised from, and verified against, reanalyses of the 20<sup>th</sup>Century. They allow us to analyse ENSO forecast skill beyond the first year, to study how skill varies on decadal time scales and to test sensitivities to atmospheric wind forcings and the assimilation of ocean observations in the initial conditions.</p><p>First results show a substantial amount of multi-decadal variability in both ENSO mean state and forecast skill. We find periods in the early-to-mid 20<sup>th</sup>Century with much reduced levels of skill, in particular after the spring barrier in the first forecast year. Periods at the beginning and at the end of the Century show broadly similar good performances with substantial skill even after the first year spring barrier. Combined effects of the wind forcing and the assimilation of ocean data on the initial state seem to play a crucial role in understanding this behaviour.</p>

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