993 resultados para Converter DC-AC
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[Vente. Estampes. 1858-12-20 - 1858-12-22. Paris]
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[Acte pontifical. 1517-01-00]
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Stopping and turning maneuvers on high traffic volume asphalt cement concrete surfaced roads and streets often causes distortion of the pavement. Distortion may show up as excessive rutting in the wheel path, shoving of the pavement and/or rippling of the surface. Often times repeated corrective work such as cold milling or heater planing is required in these areas to maintain the pavement surface in a reasonable condition. In recent years polymer additives have been developed for asphalt cement concrete paving mixes that show promise in improving the inplace stability of the pavements. AC-13 (Styrelf 13) available from Bitucote Products Company, St. Louis, Missouri is an asphalt cement that has been modified by an additive to exhibit characteristics of very high stability in asphalt mixes.
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In Livius 1,5,1 the reading Lupercal hoc ludicrum has been interpreted with the meaning of Lupercal game or festivity; however, this interpretation goes against the use in Latin of the singular form Lupercal, wich is used to refer to the cavern and not to the games, wich are always referred to with theplural form Lupercalia. Lexical reasons suggest that Lupercal should also be interpreted here in its usual local sense.
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Colbertinus
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Es tracta duna obra fruit dun conveni de collaboraci signat lany 2004 entre la URV, lICAC i Repsol YPF, i resultat dun projecte de recerca de lICAC incls en la lnia de recerca Arqueologia del paisatge, poblament i territori, que ha comptat amb el cofinanament de Repsol YPF i la collaboraci de Codex. Aquesta obra se centra en les excavacions arqueolgiques efectuades en una villa romana situada entre la via Tarraco-Ilerda i la llera del riu Francol, a lactual terme municipal del Morell. s un assentament datat entre els segles II aC i V dC que reflecteix els patrons docupaci romana a lrea central de lager Tarraconensis i complementa, a partir duna exhaustiva anlisi, les dades histriques que, fins a lactualitat, oferien les villes de Centcelles a Constant o de Paret Delgada a la Selva del Camp. Lestudi parteix de les excavacions que lempresa Codex hi va efectuar lany 1996 arran duna actuaci durgncia motivada per la construcci duna nova planta industrial de laleshores Repsol Qumica SA. Lobra s fruit de lestudi de la documentaci, fins ara indita, elaborada per lempresa Codex i que ha estat cedida per a aquest projecte de recerca. La publicaci ha estat coordinada per Josep M. Macias Sol i Joan J. Menchon Bes i els textos sn obra del Dr. Domnec Campillo, M. Milagros Cuesta i Laura Devenat (Laboratori de Paleopatologia i Paleoantropologia, Museu dArqueologia de Catalunya), Montserrat Garca Noguera (Codex Arqueologia i Patrimoni), Miguel . Gonzlez Prez (Grup de Recerca dArqueologia Clssica, Protohistrica i Egpcia, Universitat de Barcelona), Josep M. Macias Sol (ICAC), Joan J. Menchon Bes (Museu dHistria de Tarragona), Joan S. Mestres i Torres (Laboratori de Dataci per Radiocarboni, Universitat de Barcelona), Rosario Navarro Sez (Universitat de Barcelona), Josep M. Palet Martnez (ICAC) i Jordi Principal Ponce (Museu dArqueologia de Catalunya). Amb la nova collecci Hic et nunc lICAC assumeix el comproms de difondre regularment la documentaci arqueolgica bsica generada des del camp universitari o empresarial, entenent que la publicaci daspectes ms concrets s imprescindible per a lelaboraci de sntesis ms globalitzadores.
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La villa romana del Mas den Gras s una de les villes ms interessants de lager de Trraco, ja que ens ha perms documentar un important conjunt hidrulic dpoca romana republicana (segles II-I aC) que podria correspondre ja en aquells moments a una villa romana que seria una de les ms antigues del pas. Els seus banys, datats entre finals del segle I i principis del segle II dC, molt ben conservats, sn un magnfic exemple daquest tipus destructures a casa nostra. Aquest llibre s la monografia de les excavacions durgncia del 1994. Els autors sn Ramon Jrrega (investigador de lICAC) i Eduard Snchez (Arqueocincia Serveis Culturals, SL).
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Colbertinus
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La necrpolis protohistrica de Milmanda (Vimbod, Conca de Barber, Tarragons). Un exemple del mn funerari catal durant el trnsit entre els segles VII i VI aC s una monografia que documenta els materials que es van trobar en aquest jaciment i els posa en el context del mn funerari del perode ibric antic a Catalunya.
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The major objective of this work was to evaluate the potential of image analysis for characterizing air voids in Portland cement Concrete (PCC), voids and constituents of Asphalt Concrete (AC) and aggregate gradation in AC. Images for analysis were obtained from a scanning electron microscope (SEM). Sample preparation techniques are presented that enhance signal differences so that backscattered electron (BSE) imaging, which is sensitive to atomic number changes, can be effectively employed. Work with PCC and AC pavement core samples has shown that the low vacuum scanning electron microscope (LVSEM) is better suited towards rapid analyses. The conventional high vacuum SEM can also be used for AC and PCC analyses but some distortion within the sample matrix will occur. Images with improved resolution can be obtained from scanning electron microscope (SEM) backscatter electron (BSE) micrographs. In a BSE image, voids filled with barium sulfate/resin yield excellent contrast in both PCC and AC. There is a good correlation between percent of air by image analysis and linear traverse.
