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Sample records for arco process

  1. Arco Vara laieneb Bulgaariasse

    Index Scriptorium Estoniae

    2006-01-01

    Alates juunist tegutseb Bulgaarias Arco Vara Gruppi kuuluv maaklerfirma Arco Imoti EOOD, mis tegutseb rahvusvahelise kaubamärgi ARCO Real Estate all. Bulgaariasse on Eesti ettevõtetest oma tegevust laiendanud ka varahaldusfirma Delta Imoti Capital ja Kalev Real Estate Company kinnisvaraarendusega tegelev tütarettevõte Stude REC EOOD

  2. Pau D'arco

    Science.gov (United States)

    ... is applied directly to the skin for Candida yeast infections. Commercial products containing pau d'arco are available in capsule, tablet, extract, powder, and tea forms. But sometimes it's hard ...

  3. Deposição por plasma com arco transferido Hardfacing by plasma transfer arc process

    Directory of Open Access Journals (Sweden)

    Víctor Vergara Díaz

    2010-03-01

    Full Text Available Em virtude do Processo de Soldagem Plasma com Alimentação de Pó ter similaridades com o Processo de Soldagem Plasma com Alimentação de Arame, foi realizado um estudo comparativo entre ambos os processos utilizando-se a liga a base de cobalto comercialmente conhecida como Stellite 6, como material de adição na forma de pó e arame. A pesquisa foi realizada com a expectativa de ser aplicada nas operações de revestimentos de superfícies, em especial em pás de turbinas hidráulicas desgastadas por cavitação. A seleção do material de adição a ser empregado depende da natureza do mecanismo de desgaste encontrado. No Labsolda, a liga Stellite 6 vem sendo uma das mais utilizadas, por apresentar uma excelente resistência ao desgaste erosivo por cavitação. Foi avaliada a influência da vazão de gás de plasma a partir dos valores de diluição, dimensões do cordão, dureza e microestrutura. O Processo de Soldagem Plasma com Alimentação de Pó foi o que produziu o melhor acabamento superficial, menor diluição, melhor molhamento e maior largura. Com isto abre-se uma nova perspectiva para revestimentos metálicos e neste contexto se insere a recuperação por soldagem de partes erodidas de turbinas hidráulicas.The Plasma powder transferred arc welding process, which uses feed stock in the powder form, has similarities with Plasma wire transferred arc welding. This work describes a comparative study of the two processes using a Cobalt-based alloy commercially known as Stellite 6. This Co-based alloy is recognized for its superior cavitation erosion resistance. The aim of this work is to investigate the potential of PTA coatings for the protection and refurbishiment hydraulic turbine blades. Coatings were evaluated for the influence of Plasma gas flow rate on coating dilution, geometry, hardness and microstructure. Coatings processed with the atomized Stellite 6 powder feestock showed a superior surface quality, lower dilution

  4. Arco del milenio

    Directory of Open Access Journals (Sweden)

    Adell, Josep Mª

    2005-02-01

    the most significant stages in the erection of the Millennium Arch outside the Palacio de Congresos, venue for the 12th IBMAC.
    These pictures are divided into six chapters: Background, Components, Springline, Piers, Arch, Centring Erection and Removal, and Trimming.

    A lo largo de la historia, el Arco de fábrica ha sido el componente constructivo más característico de la Arquitectura y la Ingeniería desde que después de sus inicios etruscos en la época romana fuera desarrollado adelantándose con ello a la cultura helénica.
    El Arco, desde entonces, viene empleándose como una solución constructiva eficiente para cubrir espacios con materiales que no soportan tracciones. La originalidad técnica del Arco lo ha llevado a imponerse como símbolo de las hazañas bélicas como era el Arco de Triunfo.
    En el cambio de siglo y milenio en el que nos encontramos, un salto técnico fundamental se desvela en este Congreso, el Sistema de Albañilería Integral, que abre la posibilidad de ampliar el campo de aplicación de la albañilería con la incorporación del acero, a través de las perforaciones de las piezas, lográndose por fin armar en las tres direcciones del espacio cualquier muro de fábrica que se desee.
    El Arco del Milenio conmemoró el 12th IBMAC de Madrid, mostrando en él los avances técnicos que el Sistema de Albañilería Integral permite, al tratarse de un arco inclinado en el espacio y, por tanto, el primer arco de fábrica construido fuera de la vertical, mediante fábrica de Ladriflor aparejada a tizón, reforzada con barras y cercos.
    El Arco del Milenio, diseñado por J.M. Adell (Presidente del 12th IBMAC, parte de un cilindro de 14 m de diámetro, inclinado 30º sobre el terreno, y construido con fábrica de ladrillo de un pie de grueso, alternando una hilada de color amarillo de cada seis en rojo. El hueco deja un paso libre de 10 m de lado y 5,5 m de altura. La fábrica está armada regularmente por tendeles con cerchas cada

  5. Estudo da emissão de raios infravermelho próximo em processos de soldagem a arco Study of near-infrared emission on processes of arc welding

    Directory of Open Access Journals (Sweden)

    Carolina Pimenta Mota

    2011-03-01

    Full Text Available O estudo de boa parte dos fenômenos envolvidos no processo de soldagem necessita de auxílio visual e a luminosidade emitida pelo arco pode representar uma grande barreira. Uma das formas utilizadas atualmente para se obter a visualização do processo, sem a interferência do arco, consiste em iluminar o processo com o infravermelho próximo e utilizar filtros durante a aquisição das imagens. Assim, é importante investigar o comportamento do arco de soldagem em relação à sua emissão luminosa no espectro infravermelho. Desta forma, a proposta deste trabalho foi a realização de um estudo comparativo entre a emissão do arco de soldagem de radiação infravermelha próxima em dois processos largamente utilizados, TIG e MIG/MAG, focando também sua influência por parâmetros como a corrente de soldagem e a proteção gasosa utilizada. Com o uso de um sensor de luminosidade e a utilização de um sistema de lentes ópticas, foram realizados experimentos, adquirindo o espectro luminoso emitido pelo arco voltaico. Através dos resultados obtidos, ou seja, do valor numérico de energia luminosa do arco de soldagem (integração do espectro é possível se obter, com a utilização desta mesma metodologia, a energia luminosa no infravermelho próximo e, consequentemente, a intensidade luminosa, necessária para a sobreposição do arco durante a aquisição de imagens.Most of the phenomenon studied in the welding processes needs a vision system and the arc light emission can create a great barrier. Nowadays, one of the techniques used for visualizing the process, without arc interference, is the illumination of the process with near-infrared laser and the use of optic filters during the image acquisition. Thus, it is important to investigate the welding arc behavior in respect to its light emission within the near-infrared spectrum. Therefore, this work aims to perform a comparative study of the arc near infrared emission in one of the two

  6. ARCO outlines alternative to emissions trading

    International Nuclear Information System (INIS)

    This paper reports that ARCO has proposed an alternative to southern California's proposed air emissions trading program. ARCO Products Co. Pres. George Babikian warned that unless the controversial Regional Clean Air Incentives Market (Reclaim) program under development by the South Coast Air Quality Management District (Scaqmd) is dramatically changed, many local businesses would shut down, thus driving more jobs from the state. Babikian the ARCO's plan would achieve significant emissions reductions while still encouraging business and industry development in the region

  7. Arco Vara plaanib võlakirjaemissiooni / Kristiina Randmaa

    Index Scriptorium Estoniae

    Randmaa, Kristiina

    2004-01-01

    Kinnisvarafirma Arco Vara juhid plaanivad kaasata ettevõtte edasiseks arendamiseks lisakapitali, tõenäoliselt võlakirjade emissiooniga börsil. Kommenteerib Tõnis Oja. Diagrammid: Arco Vara grupi kasv on tähelepanuväärne. Lisa: Arco Vara kinnisvaragrupi tegevusalad. Vt. samas: Arco Vara Kinnisvarafond loobus börsiplaanist

  8. Aplicabilidad del monitoreo de emisiones del arco eléctrico para el control de calidad en el proceso MAG-S Applicability of monitoring of electric arc emissions for quality control in MAG-S process

    Directory of Open Access Journals (Sweden)

    Eber Huanca Cayo

    2011-12-01

    Full Text Available Garantizar la calidad en soldadura no es una tarea trivial. Para ello diversas inspecciones de control de calidad son realizadas, en detrimento, los costos y tiempos de producción se elevan. Existen diversos sistemas automatizados de soldadura, éstos son auxiliados por sistemas de control basados en el monitoreo de parámetros de soldadura. Sin embargo son reducidos los sistemas automatizados de monitoreo de calidad que en su mayoría son diseñados para el proceso TIG. Durante la soldadura, el arco eléctrico produce emisiones acústicas y electromagnéticas que se manifiestan como sonido y luminosidad. El objetivo del presente trabajo es mostrar que estas emisiones del arco pueden ser utilizados para el monitoreo de la calidad de la soldadura para el proceso MAG-S. Se realizaron múltiples experimentos de soldadura en posición plana donde se indujeron perturbaciones consistentes presencia de grasa y ausencia de gas de protección. En cada experimento se adquirió simultáneamente señales de tensión y corriente así como señales de emisiones del arco eléctrico. A partir de las emisiones acústicas y electromagnéticas en la banda de ultravioleta, se midió la frecuencia de cortocircuitos. A partir de la emisión electromagnética en la banda infrarroja se midió la estabilidad del proceso de soldadura. Los resultados muestran que las emisiones del arco pueden ser utilizadas para el monitoreo y detección de perturbaciones en soldadura y con el entendimiento de las variaciones de cada emisión podría identificarse determinados tipos de perturbaciones.Ensuring quality in welding is not a trivial task. For this purpose several quality control checks are performed, at the expense, costs and production times are increased. There are several automated welding systems and they are assisted by control systems based on monitoring of welding parameters. However, automated quality monitoring systems are limited and they are mostly designed for the

  9. Hüvasti, Arco! / Anne Oja

    Index Scriptorium Estoniae

    Oja, Anne, 1970-

    2007-01-01

    Kinnisvarafirma Arco Vara juhatuse esimehe Viljar Araka lahkumisest ja senise nõukogu esimehe Arti Araka taandumisest nõukogu lihtliikmeks. Vt. samas: Uued juhid panustavad Balkanile ja Ukrainale. Kommenteerivad Peep Sooman, Arti Arakas ja Tõnis Oja

  10. Arco Vara vahetas majas materjalid odavama vastu / Kadi Heinsalu

    Index Scriptorium Estoniae

    Heinsalu, Kadi, 1966-

    2007-01-01

    Ilmunud ka: Delovõje Vedomosti 14. märts lk. 10. Kinnisvaraarendaja Arco Vara loobus Kodukolde elamurajooni korterite hinnatõusust, kuid kasutas kokkuhoiu nimel odavamaid materjale kui alguses lubas. Kommenteerib Arco Vara turundusjuht Merle Väli

  11. Estudo microestrutural de aço carbono soldado com o processo arco submerso e adições de Fe-Ti Microstructural study of carbon steel welded with the submerged arc process and additions of Fe-Ti

    OpenAIRE

    Aleir Fontana de Paris; Francisco Mulazzani; Jean-Michel de Paris

    2012-01-01

    Os cordões de solda apresentam normalmente uma estrutura colunar grosseira, o que diminui as propriedades mecânicas do conjunto soldado. No caso da soldagem com arco submerso, o emprego de alta energia proporciona uma solda com características peculiares como a elevada taxa de fusão e consequentemente grande volume de metal fundido. Foi comprovado que a redução no tamanho e/ou modificações na forma dos cristais obtidos aumenta a tenacidade da junta soldada. Estudos realizados mostraram que a ...

  12. Arco Vara eduloosse on tekkinud mõrad / Kadi Heinsalu

    Index Scriptorium Estoniae

    Heinsalu, Kadi, 1966-

    2006-01-01

    Mitmed Arco Vara projektid on jäänud toppama, kasum on vähenenud ja ehituspool on kahjumis. Vt. samas: Ralf-Martin Soe. Elamuehituse marginaal väheneb; Laene rohkem kui miljardi eest; Arco Vara investeeringud. Diagramm: Majandusnäitajad

  13. Miks siis Arco Vara ikkagi pudenes? / Ralf-Martin Soe

    Index Scriptorium Estoniae

    Soe, Ralf-Martin

    2007-01-01

    Ilmunud ka: Delovõje Vedomosti 19. dets. lk. 8. Viljar ja Arti Arakase lahkumine Arco Varast on äriringkondades tekitanud erinevaid arvamusi. Vt. samas: Arakas: ma ei tea, kas ma müün; Roose: müüme 40 000 aktsiat. Diagramm: Arco Vara omanikud

  14. Arco Vara radikaalne samm / Ralf-Martin Soe, Lembit Tampere

    Index Scriptorium Estoniae

    Soe, Ralf-Martin

    2009-01-01

    Arco Vara hindas neljandas kvartalis ettevõttele kuuluvaid kinnistuid alla ühe miljardi krooni väärtuses, põhjendades seda eriti drastilise keskkonna muutusega kinnisvaraturul. Vt. samas lühiinterv. Arco Vara juhi Lembit Tamperega. Diagramm

  15. Lembit Tampere: tagame Arco Vara likviidsust / Enn Tosso, Tarvo Vaarmets

    Index Scriptorium Estoniae

    Tosso, Enn, 1976-

    2009-01-01

    Arco Vara juht kommenteerib ettevõtte osaluste müüki Tallinna Olümpiaspordikeskuse AS-is, Floriston Grupp OÜ-s ja Arco Ärikeskuse OÜ-s Marcel Vichmanni ja Olav Miiliga seotud äriühinguile. Tehingu kogukahjum on 150 miljonit krooni

  16. Rahavajadus võib viia Arco Vara börsile / Raigo Neudorf

    Index Scriptorium Estoniae

    Neudorf, Raigo

    2005-01-01

    Kinnisvarafirma Arco Vara loomisest, arengust ning ettevõtte poolt arendatavatest kinnisvaraprojektidest. Vt. samas: Tallinna peaarhitekt Igor Volkov: Arco on korrektselt käitunud; Hindrek Leppsalu: Arco Vara on tugev konkurent; Nimi tuli omanikult. Diagramm: Iga kolmas käibekroon kasumiks. Lisa: Arco Vara numbrites

  17. Arco Vara küsib korteriostjatelt kolmandiku raha juurde / Kadi Heinsalu

    Index Scriptorium Estoniae

    Heinsalu, Kadi, 1966-

    2006-01-01

    Kinnisvaraarendaja Arco Vara nõuab aasta eest korteri broneerinutelt raha juurde. Kommenteerivad Viljar Arakas ja Rocco Ots. Vt. samas: See oli Arco Varal algusest peale plaanitud; Arco Vara põhjendab kuni 30% hinnatõusu ehitaja survega; Arco Vara omanikud on Rikaste Klubi liikmed

  18. Arco Vara müüs poole Riia projektist norrakatele / Agnes Ojala

    Index Scriptorium Estoniae

    Ojala, Agnes

    2007-01-01

    Arco Vara tütarettevõte Arco Investeeringute AS ja Arco Vara Läti operatsioonide juht Viktors Savins müüsid poole Riia arendusprojektist Norra ettevõttele Linstow Baltic. Vt. samas: Arco Vara ehitab tivoli kortermaju täis

  19. Influencia de la transferencia por arco sobre la microestructura de uniones soldadas usando arco pulsado//Influence of the transfer by arc on the microstructure of welded joint produced by pulsed arc

    Directory of Open Access Journals (Sweden)

    Sandra Patricia Romero-Nieto

    2012-12-01

    Full Text Available Este artículo estudia la influencia de la transferencia de arco pulsado en el proceso de soldadura por arco eléctrico con gas de protección (GMAW, Gas Metal Arc Welding, sobre la microestructura, utilizando dos composiciones de gas de protección y los modos de transferencia de arco pulsado y corto circuito. Se caracterizó la microestructura y las propiedades mecánicas y los resultados indican que se logra una mayor resistencia a la tensión y un perfil de dureza más homogéneo utilizando el modo de transferencia de arco pulsado, debido a que con esta existe una distribución más uniforme del tamaño de grano en lastres zonas de soldadura. La presencia de ferrita acicular fue una constante en todos los tratamientos evaluados, mientras la ferrita widmastatten se presentó con preferencia en la transferencia de arco pulsado.Palabras claves: transferencia en arco pulsado, proceso GMAW, mezclas de gases de protección._______________________________________________________________________________AbstractThis article studies the influence of pulsed arc transfer in the GMAW process on the microstructure, usingtwo shielding gas composition and the pulsed arc and short circuit transfer. The microstructure andmechanical properties was characterized and the results show that is achieved a greater tensile strengthand more homogeneous in the hardness profile using the pulsed arc transfer, because it creates a moreuniform size grain in the three areas of welding. The presence of a circular ferrite was constant in alltreatments tested, while widmastatten ferrite was presented preferably in the pulsed arc transfer.Key words: transfer in pulsed current, GMAW process, shielding gas mixtures

  20. Arco Vara läheb Balkanile / Virge Lahe

    Index Scriptorium Estoniae

    Lahe, Virge

    2007-01-01

    Ilmunud ka: Delovõje Vedomosti 6. juuni lk. 3. Arco Vara juhid usuvad firma edukasse tegevusse Bulgaarias ja Rumeenias. Kommenteerib Maris Lauri. Vt. samas: Peep Aaviksoo: ruumi jätkub; Diagramm: Majandusnäitajad

  1. 21 CFR 1304.33 - Reports to ARCOS.

    Science.gov (United States)

    2010-04-01

    ... with the ARCOS Unit on DEA Form 333, or on media which contains the data required by DEA Form 333 and... use in producing dosage forms. (f) Exceptions. A registered institutional practitioner who...

  2. Arco to enter European PGE production with new Rotterdam plant

    International Nuclear Information System (INIS)

    Arco Chemical (Newtown Square, PA) will enter production of propylene glycol ethers (PGEs) in Europe by building a 70,000-m.t./year plant at its Rotterdam site. Arco's board has approved the project, with construction to begin this year and completion expected in mid-1995. 'This new plant supports the company's long-standing strategy to increase its downstream integration in value-added derivatives of propylene oxide,' says Jack Oppasser, president of Arco Chemical Europe (Maidenhead, U.K.). 'It allows the company to sustain its strong position in the growing European glycol ether market.' Arco's move represents a challenge to Dow Europe (Horgen, Switzerland), which dominates the European PGE market. Dow is Europe's biggest producer of PGEs, with its Dowanol brands commanding a share greater than 50% of the estimated 90,000-m.t./year methyl-based PGE market. This was recently boosted by completion of the expansion of its plant at Stade, Germany, from 60,000 m.t./year to 110,000 m.t./year. While Arco does not currently make PGEs in Europe, it is the second-largest supplier, with about 15,000 m.t.-20,000 m.t./year, via 'third-party manufacturing arrangements' with European producers, including BP Chemicals, and imports from its 90-million lbs/year plant at Bayport, TX. However, Arco refuses to comment on this because of 'antitrust aspects.'

  3. Estudo microestrutural de aço carbono soldado com o processo arco submerso e adições de Fe-Ti Microstructural study of carbon steel welded with the submerged arc process and additions of Fe-Ti

    Directory of Open Access Journals (Sweden)

    Aleir Fontana de Paris

    2012-03-01

    Full Text Available Os cordões de solda apresentam normalmente uma estrutura colunar grosseira, o que diminui as propriedades mecânicas do conjunto soldado. No caso da soldagem com arco submerso, o emprego de alta energia proporciona uma solda com características peculiares como a elevada taxa de fusão e consequentemente grande volume de metal fundido. Foi comprovado que a redução no tamanho e/ou modificações na forma dos cristais obtidos aumenta a tenacidade da junta soldada. Estudos realizados mostraram que a adição de titânio, até certo limite, modificaria a microestrutura obtida bem como o tamanho dos grãos solidificados. Neste trabalho, foi empregada uma liga metálica de Fe-Ti adicionada no momento de soldagem, tipo bead-on-plate, sobre aço estrutural ASTM A 36, com espessura de 10 mm. As adições de titânio variaram entre 0,48 ppm e 29,1 ppm, e a soldagem foi executada com uma energia de 1170 kJ/m. Os resultados mostraram modificações da fase ferrita acicular bem como da ferrita poligonal presentes na solda.The welds usually have a coarse columnar structure, which reduces the mechanical properties of welded assembly. In the case of submerged arc welding, the use of high-energy provides a weld with specific characteristics such as high melting rate and consequently a large volume of molten metal. It was established that the reduction in size and/or changes in the shape of the crystals obtained increases the toughness of the weld. Studies have shown that the addition of titanium to a certain limit, modify the microstructure obtained and the size of the grains solidified. In this study, we used an alloy of Fe-Ti added at the time of welding-type bead-on-plate on structural steel ASTM A 36 with a thickness of 10 mm. The additions of titanium ranged between 0.48 ppm and 29.1 ppm, and welding was performed with an energy of 1170 kJ/m The results showed changes in the phase acicular ferrite and polygonal ferrite present in the weld.

  4. Arco Vara insaider ostis aktsiaid keeluajal / Annika Matson

    Index Scriptorium Estoniae

    Matson, Annika, 1976-

    2008-01-01

    Kinnisvaraettevõtte Arco Vara ühe asutaja ja omaniku Hillar-Peeter Luitsalu abikaasa Maie Luitsalu ostis ettevõtte aktsiaid keeluajal, oma ettevõtte aktsiaid on ostnud juurde ka AS-i Baltika juhatuse liikmed ja Tallinki suuromanik Enn Pant. Vt. samas: Hillar-Peeter Luitsalu; Taust

  5. Natural radioactive materials at the Arco Reactor Test Site

    Energy Technology Data Exchange (ETDEWEB)

    Singlevich, W; Healy, J W; Paas, H J; Carey, Z E

    1951-05-28

    At the request of the Division of Biology and Medicine of the AEC, the Biophysics Section of the Radiological Sciences Department at Hanford undertook the task of conducting a background survey for naturally occurring radioactive materials in the environs of the Arco Reactor Test Site in Central Idaho. This survey was part of an overall study which included meteorological measurements by the the Air Weather Service, Geological Studies by the USGS, and an ecological survey of plants and animals by members of the Idaho State College at Pocatello. In general, the measurements at Arco followed the pattern established for environmental monitoring at the Hanford Site with some additional measurements made for natural isotopes not normally of concern at Hanford. A number of analysis included materials such as plutonium and I-131 which were carried out for the purpose of establishing analytical backgrounds for the procedures used. 20 refs., 13 figs., 11 tabs.

  6. A.R.C.O.: Fuel rechanging assistant

    International Nuclear Information System (INIS)

    A.R.C.O. is a program whose objective is to assist the fuel strategy of a CANDU 600 nuclear power plant for the task of selecting channels where rechanges occur. The application of this tool implies, as a direct consequence, a notable decrease of the time employed by the professional for the task of selecting channels and, indirectly, a possible improvement of 'burn-up' extraction values and reactivity through channels selection under better conditions to carry out rechanging operations. (Author)

  7. Pulmón del soldador de arco

    Directory of Open Access Journals (Sweden)

    Luciana Molinari

    2010-12-01

    Full Text Available La siderosis del soldador o neumoconiosis siderótica fue descripta por Doig y McLaughlin en 1936 como una enfermedad pulmonar causada por la inhalación crónica de polvo de hierro en soldadores de arco eléctrico. Presentamos un caso de siderosis del soldador asociada a aumento de los niveles de ferritina, sin hallazgo de depósito de hierro en otros órganos y sin causas evidentes de hemosiderosis secundaria.

  8. Arco Vara nõukogu pillub juhte järjest üle parda / Sten-Aleks Pihlak

    Index Scriptorium Estoniae

    Pihlak, Sten-Aleks

    2008-01-01

    Arco Vara vabastas ametist juhatuse esimehe Aare Tammemäe ja juhatuse liikme Ahto Altjõe, uueks juhatuse esimeheks saab Lembit Tampere. Vt. samas: Taust; CV: Lembit Tampere; Diagrammid: Arco Vara aktsia hind; Majandusnäitajad; Arco Vara omanikud. Kommenteerib Viljar Arakas

  9. Eesti suurim ärilahutus jagas Arco-meeste vara / Ralf-Martin Soe

    Index Scriptorium Estoniae

    Soe, Ralf-Martin

    2008-01-01

    Arco Vara asutajad Richard Tomingas ja Arti Arakas jagasid omavahel vara ja lõpetasid koos äri ajamise. Vt. samas: Kaheksakuuline lahutus; Tomingase aktsiakapp kobedam; Suuromanikud küsisid pantimiseks loa

  10. Arco nõuab Hillar Tederilt hilinenud 137 miljonit krooni / Agnes Ojala

    Index Scriptorium Estoniae

    Ojala, Agnes

    2009-01-01

    Arco Vara tütarettevõte nõuab kohtu kaudu suurärimees Hillar Tederi firmalt AS Ühendatud Kapital 11 mln. dollarit, sest firma ei ole tagasi maksnud Simferopoli kaubanduskeskusse investeeritud raha

  11. Kevad turul : juba aprillis sihib börsile Arco Vara / Kadi Heinsalu, Virge Lahe

    Index Scriptorium Estoniae

    Heinsalu, Kadi, 1966-

    2007-01-01

    Kinnisvaraettevõte Arco Vara tahab viia ettevõtte börsile. Vt. samas: Arco Varal on vaja arenduseks miljardeid; Suuromanikud Arti Arakas ja Richard Tomingas; Ettevõtte CV. Diagramm: Majandusnäitajad. Kommenteerivad: Tex Vertmann, Malle Aleksius, Peeter Koppel, Rainer Änilane ja Ragnar Plees. Vt. ka Annika Matsoni ja Agnes Ojala art. 21. märtsi Äripäevas lk. 2

  12. FRATURA DO ARCO ZIGOMÁTICO NO PERÍODO DE CRESCIMENTO: ESTUDO EXPERIMENTAL EM RATOS

    Directory of Open Access Journals (Sweden)

    GOULART Alan Cruvinel

    1998-01-01

    Full Text Available O comportamento da fratura do arco zigomático no período de crescimento foi avaliado através de mensurações cefalométricas. Fratura com desvio medial no lado direito foi realizada em ratos com um mês de idade. Foi verificada tendência de retorno do arco fraturado à sua posição original, porém, com diferença estatisticamente significante para a profundidade da fossa infratemporal. Entretanto, não houve diferença significante para a distância entre o arco zigomático e a mandíbula, o que pode ser explicado pela presença de desvio significante da mandíbula.

  13. Arco Vara endine töötaja nõuab kohtu kaudu ettevõtte pankrotti / Enn Tosso

    Index Scriptorium Estoniae

    Tosso, Enn, 1976-

    2010-01-01

    Kinnisvarafirma Arco Vara endine Läti büroo juht Indrek Porila esitas ettevõtte vastu pankrotiavalduse. Arco Vara teatas, et ta on likviidne ja maksujõuline ettevõte ning see välistab vastavalt seadusele pankroti algatamise

  14. Võimuvõitlus räsib börsi staarlangejat Arco Vara / Lauri Linnamäe

    Index Scriptorium Estoniae

    Linnamäe, Lauri

    2008-01-01

    Kinnisvarafirma Arco Vara väärtus on langenud üle seitsme korra, ärimees Toomas Tool ootab väidetavalt aega, et firma üle võtta. Graafik: Arco Vara aktsia veereb arvukate vangerduste taustal järjekindlalt allamäge

  15. Arco Vara müüs nõude Tederi firma vastu / Väinu Rozental ; kommenteerinud Hillar Teder

    Index Scriptorium Estoniae

    Rozental, Väinu, 1957-

    2010-01-01

    AS-i Arco Vara tütarettevõte Arco Investeeringute AS müüs temale kuuluva nõude Hillar Tederi firma Celia Crowd AS-i (endine Ühendatud Kapital) vastu AS-ile EMF Invest. Tehingu väärtus on 52 miljonit krooni

  16. Arco Vara aktsionärideks heitsid oma töötajad ja SEB / Ralf-Martin Soe, Lemmi Kann

    Index Scriptorium Estoniae

    Soe, Ralf-Martin

    2007-01-01

    Arco Vara aktsiaid märkisid suures ulatuses ettevõtte oma töötajad ja emissiooni korraldaja SEB Eesti Ühispank. Vt. samas: Arco Vara aktsia ei olnud fondidele piisavalt atraktiivne; SEB fondid panid raha Arco Varasse; 25 töötajat osales motivatsioonipaketis. Kommenteerib Alo Vallikivi

  17. Caracterização e avaliação da resistência à corrosão na soldagem de tubulação de aço inoxidável duplex UNS S31803 pelo processo a arco submerso Characterization and evaluation of corrosion resistance of welded joint of duplex stainless steel pipe UNS S31803 by submerged arc process

    Directory of Open Access Journals (Sweden)

    Juan Manuel Pardal

    2011-12-01

    Full Text Available O presente trabalho apresenta os resultados da caracterização e avaliação da resistência à corrosão de uma junta soldada correspondente a uma tubulação de aço inoxidável duplex (AID UNS S31803 de 35 mm de espessura de parede soldada pelos processos de soldagem TIG (GTAW na raiz e arco submerso (SAW no enchimento e acabamento. Foram empregados como consumíveis de soldagem metais de adição de liga 25Cr-9Ni-4Mo (% em peso. Os resultados da caracterização das propriedades mecânicas, composição química e resistência à corrosão em diversas regiões da junta soldada foram comparados com os obtidos para o metal de base da tubulação, assim como com os valores mínimos exigidos pelas normas de projeto. Os resultados obtidos demonstram claramente a possibilidade da implementação do processo SAW na pré fabricação de tubulações de paredes espessas de AID, tendo em vista os resultados das propriedades analisadas e a grande demanda na construção e montagem de tubulações desta família de aço inoxidáveis na indústria offshore.This work presents the mechanical properties, microstructural and corrosion resistance evaluation of a welded joint of duplex stainless steel (DSS pipe with 35 mm wall thickness. The joint was welded by gas tungsten arc welding (GTAW process in the root passes and submerged arc welding (SAW in the filling and cap passes using filler metals with composition 25Cr-9Ni-4Mo (%wt.. The results of mechanical properties, chemical composition and corrosion resistance characterization in different regions of the welded joint were compared to the base metal and to the specifications required by the standards applied in the project. The main focus of this work was to show the successful utilization of SAW process in the welding of thick wall pipes of DSS. The application of high productivity process such as SAW has a crescent demand in offshore industry.

  18. Arco Vara tegi aegade nõrgima börsidebüüdi / Virge Lahe

    Index Scriptorium Estoniae

    Lahe, Virge

    2007-01-01

    Arco Vara aktsia hind langes alla emissioonihinna juba pärast esimest kahtekümmet kauplemisminutit. Diagramm: Aktsia hind; Ettevõtete aktsia hinnad esimese börsipäeva lõpuks; Aktsiate märkijad. Vt. samas: Tagasivaade - õhus oli pingutatud pidulikkus

  19. Arco Vara kempleb linnaga magusa arenduse pärast / Piret Reiljan

    Index Scriptorium Estoniae

    Reiljan, Piret, 1983-

    2008-01-01

    Arco Vara, kes koos äripartneriga on juba aastaid püüdnud läbi suruda 300 korteri ehitamist Pirita TOP-i alale, sai Pirita linnaosavanemalt eitava vastuse. Kommenteerivad Lea Nilson ja Tõnu Toompark. Vt. samas: Taust

  20. Arco ei investeeri projektidesse, mida pangad ei finantseeri / Aare Tammemäe

    Index Scriptorium Estoniae

    Tammemäe, Aare

    2007-01-01

    Ilmunud ka: Finansovõi Menedzhment : infovõpusk nr. 18 okt. lk. 6-7. Kinnisvaraettevõtte Arco Vara finantsdirektori ja juhatuse liikme sõnul on maailma finantskriis mõjutanud ettevõtte aktsiahinda, võõrvahenditega finantseerimises ei ole kriis mõju avaldanud

  1. Arco Vara nõus Kodukolde kliendi vana korteri ostma / Kadi Heinsalu

    Index Scriptorium Estoniae

    Heinsalu, Kadi, 1966-

    2007-01-01

    Ilmunud ka: Delovõje Vedomosti 24. okt. lk. 29. Arco Vara on valmis ära ostma kliendi vana korteri ja andma pangale ostja eest garantii 15protsendilisele omaosalusele. Vt. samas: Arakas: nagu autovahetus kümne aasta eest. Kommenteerivad Monica Meldo ja Olev Mait Makk

  2. Arco Vara aktsionär meenutas Aivo Pärnale tema kohustust / Tiiu Põld

    Index Scriptorium Estoniae

    Põld, Tiiu, 1945-

    2008-01-01

    Arco Vara nõukogu liikme Hillar-Peeter Luitsalu tunnistuste kuulamisest endise keskkonnaministri Villu Reiljani, vandeadvokaat Tarmo Silla ja ärimees Aivo Pärna kohtuasjas. Lisatud: segadus Rävala 8 maja müügi ümber

  3. A versatilidade clínica do arco utilidade The clinical versatility of the utility archwire

    Directory of Open Access Journals (Sweden)

    Márcio Antonio de Figueiredo

    2008-08-01

    Full Text Available INTRODUÇÃO: dentro da ciência Bioprogressiva, o arco utilidade, juntamente com o quadri-hélice, é o dispositivo mais conhecido e utilizado para o tratamento de inúmeras más oclusões. Com um desenho ao mesmo tempo simples e original, o arco utilidade tornou-se parte integrante do arsenal ortodôntico utilizado nos períodos das dentaduras mista e permanente. O nome do arco é uma referência à grande versatilidade que este dispositivo oferece, e devido aos vários efeitos que o mesmo pode promover durante o tratamento. OBJETIVO: este artigo destina-se a discutir a fabricação, a ativação e o uso clínico do arco utilidade de Ricketts no tratamento ortodôntico, além de descrever alguns dos princípios da técnica ortodôntica Bioprogressiva. CONCLUSÃO: pode-se concluir que o arco utilidade é um aparelho extremamente versátil, com inúmeras possibilidades clínicas, sendo capaz de intruir, extruir, avançar ou retrair os incisivos superiores e inferiores; manter, diminuir ou aumentar o espaço no arco inferior; além de ancorar os molares inferiores. Entretanto, uma das maiores vantagens de seu uso consiste na correção de más oclusões do tipo Classe II, com mordida profunda.INTRODUCTION: The utility archwire, along with the quad-helix, is the most widely known and used device within the Bioprogressive technique for the treatment of several malocclusions. Featuring a simple yet original design, the utility archwire has become an integral part of the orthodontic arsenal, with applications in the periods of mixed and permanent dentition. The name of this archwire refers to its great versatility, and to the multiple effects it can have during treatment. OBJECTIVE: This article aims to discuss the production, application and clinical use of the Ricketts utility archwire in orthodontic treatments, as well as to describe some of the basics aspects of the Bioprogressive orthodontic technique. CONCLUSION: It can be concluded that the

  4. Elementos finitos circulares para modelagem de arcos e anéis

    Directory of Open Access Journals (Sweden)

    Manzi Eduardo Neto

    2002-01-01

    Full Text Available Esse trabalho fornece algumas formulações de elementos finitos circulares para análise de arcos e anéis. Atenção especial é dada ao cálculo da matriz de rigidez dos elementos finitos desenvolvidos, onde os efeitos das deformações de flexão, cisalhantes e de membrana são levados em consideração. O acoplamento desses efeitos permite a análise do comportamento de arcos esbeltos e espessos. No final do artigo, através da análise de problemas estruturais encontrados na literatura, pretende-se verificar a eficiência das formulações implementadas. O objetivo é conhecer a melhor modelagem numérica para obtenção dos deslocamentos e forças resultantes de sistemas estruturais curvos.

  5. Estudo da viabilidade de construção de pontes em arco

    OpenAIRE

    Santos, P.; Morais, M.; Varum, H.

    2008-01-01

    As pontes de alvenaria em arco são o testemunho do engenho a nível de concepção, método construtivo e carácter estético. Existem inúmeros exemplos de pontes em alvenaria de pedra que atravessaram vários séculos até aos nossos dias, continuando a cumprir as suas funções com um nível de desempenho adequado. Actualmente é rara a construção desta tipologia de pontes. As reconhecidas dificuldades associadas à construção de pontes em arco, agravado pelo surgimento de novos materiais, ...

  6. Empleo de cromitas refractarias para la obtención de fundentes aglomerados utilizados en la soldadura automática por arco sumergido (SAW

    Directory of Open Access Journals (Sweden)

    Perdomo-González, L.

    2003-08-01

    Full Text Available In the present work high carbon ferrochrome (load ferrochrome and slags are obtained, starting frora the métallurgie reductive processing of refractory chromites. The obtaining of alloys and slags is studied using an experiment design based in the relationships among components. The chemical compositions of alloys and slags guarantee their application for the conformation of alloys loads and matrix fluxes amassed for the superficial filling by means of submerged arc welding (SAW. The melting-reduction process is carried out in an electric arc furnace.

    En el presente trabajo se obtienen ferrocromo de alto carbono (ferrocromo de carga y escorias a partir del proceso de reducción de cromitas refractarias. Mediante la utilización de un diseño de experimento de relaciones entre componentes, se estudia la obtención de aleaciones y escorias. La composición química de ambas garantiza su aplicación para la conformación de cargas aleantes y matrices de fundentes aglomerados, para el relleno superficial mediante soldadura automática por arco sumergido (SAW. El proceso de fusión-reducción se realiza en un horno eléctrico de arco.

  7. Surveying and Comparing the Arco Dei Gavi and its Historical Wooden Maquette

    OpenAIRE

    Francesco Guerra; Paolo Vernier

    2011-01-01

    Actually geometrics’ science offers new opportunities and interesting applications in the field of Cultural Heritage. These applications are strictly related to preservation, restoration but even to cataloging and reproducing a monument that no longer has its original integrity.  The possibility of obtaining 3D data, of such a model close to reality, enables us to realize studies that sometimes are too complex or impossible. The paper will describe the study of a monumental arch, the Arco dei...

  8. Agenesis of the posterior arch of the atlas Agenesia do arco posterior do atlas

    Directory of Open Access Journals (Sweden)

    Martin Torriani

    2002-01-01

    Full Text Available PURPOSE: To illustrate the radiological findings and review the current literature concerning a rare congenital abnormality of the posterior arch of the atlas. CASE REPORT: An adult female without neurological symptoms presented with an absent posterior arch of the atlas, examined with plain films and helical computerized tomography. Complete agenesis of the posterior arch of the atlas is a rare entity that can be easily identified by means of plain films. Although it is generally asymptomatic, atlantoaxial instability and neurological deficits may occur because of structural instability. Computerized tomography provides a means of assessing the extent of this abnormality and can help evaluate the integrity of neural structures. Although considered to be rare entities, defects of the posterior arch of the atlas may be discovered as incidental asymptomatic findings in routine cervical radiographs. Familiarity with this abnormality may aid medical professionals in the correct management of these cases.OBJETIVO: Descrever os achados radiológicos e revisar a literatura de uma anormalidade congênita rara do arco posterior do atlas. RELATO DE CASO: Uma paciente adulta sem queixas neurológicas apresentava ausência do arco posterior do atlas, examinada através de radiografias simples e tomografia computadorizada helicoidal. A agenesia completa do arco posterior do atlas é uma entidade rara que pode ser facilmente identificada através de radiografias simples. Apesar de ser geralmente assintomática, instabilidade atlanto-axial e queixas neurológicas podem ocorrer devido à instabilidade estrutural. A tomografia computadorizada possibilita a avaliação da extensão desta anormalidade e pode auxiliar na análise da integridade de estruturas neurais. Apesar de serem considerados entidades raras, os defeitos do arco posterior do atlas podem ser achados incidentais em radiografias cervicais de rotina. A familiaridade com esta anormalidade pode

  9. Features of YAG crystal growth under Ar+CO reducing atmosphere

    Science.gov (United States)

    Arhipov, P.; Tkachenko, S.; Vasiukov, S.; Hubenko, K.; Gerasymov, Ia.; Baumer, V.; Puzan, A.; Mateychenko, P.; Lebbou, K.; Sidletskiy, O.

    2016-09-01

    The influence of the reducing Ar+CO atmosphere on the stages of starting raw material preparation, growth and post-growth annealing of yttrium aluminum garnet, Y3Al5O12 (YAG) crystals was studied. The chemical reactions involving CO atmosphere and its impact on the raw material, melt, and crystal composition are determined. Modification of YAG optical properties under the reducing annealing is discussed.

  10. Bone marrow oedema on MR imaging indicates ARCO stage 3 disease in patients with AVN of the femoral head

    Energy Technology Data Exchange (ETDEWEB)

    Meier, Reinhard; Schaeffeler, Christoph; Waldt, Simone; Rummeny, Ernst J.; Woertler, Klaus [Klinikum rechts der Isar, Technische Universitaet Muenchen, Department of Diagnostic and Interventional Radiology, Munich (Germany); Kraus, Tobias M. [Klinikum rechts der Isar, Technische Universitaet Muenchen, Department of Orthopaedics, Munich (Germany); Berufsgenossenschaftliche Unfallklinik Tuebingen, Department of Trauma and Orthopaedics, Tuebingen (Germany); Torka, Sebastian [Klinikum rechts der Isar, Technische Universitaet Muenchen, Department of Orthopaedics, Munich (Germany); Berufsgenossenschaftliche Unfallklinik Murnau, Department of Trauma and Orthopaedics, Murnau (Germany); Schlitter, Anna Melissa; Specht, Katja [Klinikum rechts der Isar, Technische Universitaet Muenchen, Institute of Pathology, Munich (Germany); Haller, Bernhard [Klinikum rechts der Isar, Technische Universitaet Muenchen, Institute of Medical Statistics and Epidemiology, Munich (Germany); Rechl, Hans [Klinikum rechts der Isar, Technische Universitaet Muenchen, Department of Orthopaedics, Munich (Germany)

    2014-09-15

    To test the hypothesis that bone marrow oedema (BME) observed on MRI in patients with avascular necrosis (AVN) of the femoral head represents an indicator of subchondral fracture. Thirty-seven symptomatic hips of 27 consecutive patients (53 % women, mean age 49.2) with AVN of the femoral head and associated BME on magnetic resonance (MR) imaging were included. MR findings were correlated with computed tomography (CT) of the hip and confirmed by histopathological examination of the resected femoral head. Imaging studies were analysed by two radiologists with use of the ARCO classification. On MR imaging a fracture line could be identified in 19/37 (51 %) cases, which were classified as ARCO stage 3 (n = 15) and stage 4 (n = 4). The remaining 18/37 (49 %) cases were classified as ARCO stage 2. However, in all 37/37 (100 %) cases a subchondral fracture was identified on CT, indicating ARCO stage 3/4 disease. The extent of subchondral fractures and the femoral head collapse was graded higher on CT as compared to MRI (P < 0.05). Histopathological analysis confirmed bone necrosis and subchondral fractures. In patients with AVN, BME of the femoral head represents a secondary sign of subchondral fracture and thus indicates ARCO stage 3 disease. circle BME on MRI in AVN of femoral head indicates a subchondral fracture. (orig.)

  11. Caracterização e avaliação da resistência à corrosão na soldagem de tubulação de aço inoxidável duplex UNS S31803 pelo processo a arco submerso Characterization and evaluation of corrosion resistance of welded joint of duplex stainless steel pipe UNS S31803 by submerged arc process

    OpenAIRE

    Juan Manuel Pardal; Guttemberg C. de Souza; Sérgio Souto Maior Tavares; Maria da P. Cindra Fonseca; Miguel L. Ribeiro Ferreira; Leandro M. Martins; Omar A. Samra Filho

    2011-01-01

    O presente trabalho apresenta os resultados da caracterização e avaliação da resistência à corrosão de uma junta soldada correspondente a uma tubulação de aço inoxidável duplex (AID) UNS S31803 de 35 mm de espessura de parede soldada pelos processos de soldagem TIG (GTAW) na raiz e arco submerso (SAW) no enchimento e acabamento. Foram empregados como consumíveis de soldagem metais de adição de liga 25Cr-9Ni-4Mo (% em peso). Os resultados da caracterização das propriedades mecânicas, composiçã...

  12. SIMULACIÓN MEDIANTE REDES NEURONALES DEL ENFRIAMIENTO DEL ARCO ELÉCTRICO EN DISYUNTORES DE ALTA TENSIÓN

    Directory of Open Access Journals (Sweden)

    ALEXANDRO BRYANTSEVICH

    2010-07-01

    Full Text Available La formulación de los modelos analíticos de enfriamiento de los arcos eléctricos en disyuntores de alta tensión todavía presenta muchas dificultades, y requiere nuevas hipótesis que los simplifique sustancialmente en relación con la realidad. Desde un punto de vista técnico, la aplicación de las redes neuronales podría ser una fuente objetiva para la simulación del enfriamiento del arco eléctrico, y para obtener resultados más cercanos a las propiedades reales del interruptor. En este trabajo se describe la problemática del desarrollo de modelos analíticos vinculados al enfriamiento del arco eléctrico de disyuntores de alta tensión mediante redes neuronales.

  13. Arcos y lineamientos de dirección noroeste-sureste en las cuencas subandinas de venezuela y colombia

    OpenAIRE

    Ujueta L., Guillermo

    2012-01-01

    De tiempo atrás se han reconocido varias características estructurales en la Cuenca de los Llanos Orientales y en la Cuenca de Barinas-Apure, aproximadamente perpendiculares a la dirección general de la Cordillera Oriental de Colombia y a los Andes de Venezuela, respectivamente, que se conocen con el nombre de arcos. Tales arcos son estructuras identificadas mediante datos magnéticos, sísmicos e información estratigráfica obtenida a partir de la perforación de numerosos pozos para la explorac...

  14. Efeitos da fratura do arco zigomático no crescimento facial em ratos jovens

    Directory of Open Access Journals (Sweden)

    ROCHA Elza Maria Villanova Fernandes

    1999-01-01

    Full Text Available Os efeitos da fratura unilateral do arco zigomático no crescimento facial foram avaliados através de mensurações cefalométricas. Fratura com desvio medial no lado direito foi realizada em ratos com um mês de idade. Os animais foram sacrificados com três meses de idade e sua mandíbula foi desarticulada. O crânio foi submetido à tomada radiográfica axial e as hemimandíbulas à norma lateral. As mensurações foram realizadas através de um sistema de computador. Foi verificada diferença significante a menor para a altura do corpo e do ramo da mandíbula. Não houve diferença significante para a profundidade da fossa infratemporal, bem como para as diversas mensurações na maxila e para o comprimento mandibular. A tendência de retorno do arco zigomático com desvio à sua posição original foi confirmada.

  15. Arco Vara asutaja müüs tüki firmast Toomas Toolile / Andres Eilart

    Index Scriptorium Estoniae

    Eilart, Andres

    2008-01-01

    Arti Arakase ettevõte Greatway müüs 5,25% Arco Vara aktsiatest ärimees Toomas Toolile. A. Arakas on koos teiste ärimeestega asutanud uue kinnisvarafirma EfTEN Capital. Ärimees T. Toolist. Lisa: Ühiseid projekte pole seni olnud

  16. Duplo arco aórtico: a quebra do silêncio Double aortic arch: the break of silence

    Directory of Open Access Journals (Sweden)

    Ana Rita Abrão

    2011-03-01

    Full Text Available Anéis vasculares representam 1-2% dos casos das cardiopatias congênitas. Relatamos um caso raro de duplo arco aórtico. Mulher, 60 anos, procurou atendimento na clínica médica apresentando 1 ano de história de disfagia, 6 meses de dispneia e 2 meses de dor torácica esporádica. Raio X de tórax revelou: hiperinsuflação pulmonar difusa, alargamento mediastinal, coração com volume e configurações normais, arco aórtico à direita e alterações degenerativas vertebrais. Tomografia computadorizada do tórax: arco aórtico duplo circundando e comprimindo a traqueia e o esôfago. Arco direito mais calibroso, emergindo dele o tronco braquiocefálico. Do arco esquerdo emergem a artéria carótida comum e a subclávia esquerda. Diagnóstico: anel vascular traqueoesofagiano decorrente do duplo arco aórtico, sendo o arco direito dominante. No presente caso, optou-se por seguimento clínico da paciente, levando-se em conta a intensidade dos sintomas apresentados.Vascular rings represent 1 to 2% of cases of congenital heart disease. We report a rare case of double aortic arch. A 60-year-old woman was admitted to the hospital presenting a one-year history of dysphagia, six months of dyspnea and two months of sporadic chest pain. Radiograph of the chest revealed diffuse pulmonary hyper inflation, widening of the mediastinum, heart of normal size and shape, a right-sized aortic arch, and degenerative changes of the thoracic spine. Computed tomography of the chest showed a double aortic arch encircling and compressing the trachea and the esophagus. The right aortic arch had a larger caliber, with brachiocephalic trunk arising from it. The left common carotid artery and the left subclavian artery arose from the left aortic arch. Diagnosis: tracheoesophageal vascular ring due to double aortic arch, with dominant right arch. In this case, we chose to follow the patient medically, taking into consideration the mildness of the symptoms.

  17. Messa a punto e prove di una sonda in grafite per la caratterizzazione di una galleria ad arco per la simulazione del rientro atmosferico

    OpenAIRE

    Caso, Vincenzo

    2014-01-01

    Nelle maggior parte delle gallerie ad arco si fa passare l’azoto attraverso l’arco elettrico e si inietta l’ossigeno nel miscelatore a valle dell’arco in modo da riprodurre le proprietà dell’aria per una corretta simulazione della corrente. Di solito la miscelazione può avvenire in modo radiale (transverse) o tangenziale (swirl). La questione che si pone è sull’uniformità delle proprietà termofluidodinamiche e della composizione chimica del plasma, in particolare ci si domanda se l’azoto e l’...

  18. Efecto de la adición de caliza sobre el metal depositado por arco sumergido

    Directory of Open Access Journals (Sweden)

    Amado Cruz-Crespo

    2012-12-01

    Full Text Available Se evaluó el efecto del incremento de las adiciones de caliza en laobtención de un fundente al manganeso sobre la composición delmetal depositado por arco sumergido (proceso SAW. La adición decaliza se realizó manteniendo constante la relación porcentualMnO/SiO2 del sistema de óxidos del fundente. Con el aumento de labasicidad se logró intensificar la actividad termodinámica del MnO ydisminuir la del SiO2, favoreciéndose la transferencia del manganeso al metal depositado, a la vez que se atenúa la del silicio, el azufre, el fósforo y el carbono permanece prácticamente inalterable. Esto posibilita el empleo de un alambre de bajo manganeso durante lasoldadura de aceros de baja aleación con proceso SAW.

  19. Lipoma parosteal de arco costal: relato de caso Parosteal lipoma of the rib: a case report

    Directory of Open Access Journals (Sweden)

    Celso Montenegro Turtelli

    2005-08-01

    Full Text Available Os autores relatam o caso de um paciente com história de tumoração na região subaxilar esquerda, de crescimento progressivo, com início há vários anos. A radiografia e a tomografia computadorizada evidenciaram lesão expansiva com densidade menor do que partes moles adjacentes, com contornos bem definidos, contígua ao quinto arco costal esquerdo, com ossificações irregulares em seu interior. Histologicamente, foi diagnosticado lipoma parosteal, um raro tumor benigno de crescimento lento.The authors report a case of a patient with a progressive-growing mass in the left subaxillary region, since childhood. Chest x-ray and computed tomography showed a well-defined low attenuation mass with irregular calcifications contiguous with the left fifth rib. Histological findings were consistent with parosteal lipoma, a rare slow-growing benign tumor.

  20. Comportamiento dinámico de puentes en arco con amortiguadores viscosos

    Directory of Open Access Journals (Sweden)

    Nicolás Parra García

    2007-11-01

    Full Text Available En éste trabajo se presenta la respuesta sísmica analítica de dos puentes en arco de gran luz, sometiéndolos a un movimiento simulado que incluye efectos de fuente cercana. Para reducir la respuesta se exploró su comportamiento conectando los dos extremos del tablero con la subestructura por medio de amortiguadores viscosos. Se llevaron a cabo una serie de análisis en el plano de ambos modelos para identificar los amortiguadores óptimos. Los resultados indicaron que el uso de amortiguadores viscosos con comportamiento no lineal, ofrece una solución práctica para reducir la respuesta dinámica de estas estructuras.

  1. Pulmón del soldador de arco Arc welder's lung

    Directory of Open Access Journals (Sweden)

    Luciana Molinari

    2010-12-01

    Full Text Available La siderosis del soldador o neumoconiosis siderótica fue descripta por Doig y McLaughlin en 1936 como una enfermedad pulmonar causada por la inhalación crónica de polvo de hierro en soldadores de arco eléctrico. Presentamos un caso de siderosis del soldador asociada a aumento de los niveles de ferritina, sin hallazgo de depósito de hierro en otros órganos y sin causas evidentes de hemosiderosis secundaria.Pneumoconiosis of electric arc welder or siderotic pneumoconiosis was described by Doig and McLaughlin in 1936 as a lung disease caused by chronic inhalation of iron fumes in electric arc welders. We present a case report of electric arc welder siderosis associated with high levels of ferritin, without findings of iron deposit in any other organ.

  2. An aging study of triple GEMs in Ar-CO sub 2

    CERN Document Server

    Guirl, L; May, J; Miyamoto, J; Shipsey, I

    2002-01-01

    An aging study was performed using triple GEMs and a print circuit board (PCB) with an intense X-ray radiation source. The GEM chamber consists of three identical GEMs and a large gas gain (6000) was shared by them. The chamber and its gas circulation line was carefully cleaned and constructed with stainless steel materials. The detector was irradiated continuously about 750 h without interruption until a large amount of charge was accumulated. A single-wire counter served as a monitoring device to check the beam and ambient conditions. The quality of the Ar-CO sub 2 gas was checked by gas chromatography and no measurable amount of hydrocarbons were found. 27 mC/mm sup 2 was accumulated with no noticeable degradation and no deposit or discoloration was found in an optical check.

  3. Non-Linear MDT Drift Gases like Ar/CO2

    CERN Document Server

    Aleksa, Martin

    1998-01-01

    Detailed measurements and simulations have been performed, investigating the properties of Ar/CO2 mixtures as a MDT drift gas. This note presents these measurements and compares them to other drift gases that have been simulated using GARFIELD, HEED and MAGBOLTZ.This note also describes systematic errors to be considered in the operation of precision drift chambers using such gases. In particular we analyze effects of background rate variations, gas-density changes, variations of the gas composition, autocalibration, magnetic field differences and non-concentricity of the wire. Their impact on the reconstructed muon momentum resolution was simulated with DICE/ATRECON.The different properties of linear and non-linear drift gases and their relative advantages and disadvantages are discussed in detail.

  4. Surveying and Comparing the Arco Dei Gavi and its Historical Wooden Maquette

    Directory of Open Access Journals (Sweden)

    Francesco Guerra

    2011-12-01

    Full Text Available Actually geometrics’ science offers new opportunities and interesting applications in the field of Cultural Heritage. These applications are strictly related to preservation, restoration but even to cataloging and reproducing a monument that no longer has its original integrity.  The possibility of obtaining 3D data, of such a model close to reality, enables us to realize studies that sometimes are too complex or impossible. The paper will describe the study of a monumental arch, the Arco dei Gavi, built in Verona during the I sec. A.C., that was destroyed in 1805 by the Napoleonic army, and its wooden model that was realized in 1813 and it has a very important role concerning the monument’s reconstruction. The purpose is to realize two threedimensional models which can be comparable to each other, two models with recognizable differences, similarities and discontinuities about shapes and single elements that compose the monument. It should also be noted that some original parts of the monument have not been relocated but are badly preserved in a museum: the 3D digital model helps to identify these parts in their original location. The main steps of the work can be summarized in: collecting the historical documentation of Arco dei Gavi and its representations; identifying proper instruments (laser scanning and photogrammetric hardware and software; surveying the Arch and its wooden model; identifying a unique and shared reference system; comparing both digital models related to the same scale; choosing a three-dimensional representation to emphasize the results; reallocation of outstanding pieces (virtual anastylosis.

  5. Endovascular treatment of aortic arch aneurysms Tratamento endovascular dos aneurismas de arco aórtico

    Directory of Open Access Journals (Sweden)

    Roberto Chiesa

    2008-06-01

    dos aneurismas do arco aórtico é uma solução interessante para pacientes selecionados. OBJETIVO: Comparar os sucessos técnico e clínico registrados nas diferentes regiões anatômicas do arco aórtico após a colocação de endoprótese. MÉTODOS: Entre junho de 1999 e outubro de 2006, 178 pacientes foram tratados na nossa instituição devido a doenças da aorta torácica com a colocação de endoprótese, sendo que o arco aórtico estava envolvido em 64 casos. De acordo com a classificação proposta por Ishimaru, a zona aórtica 0 estava envolvida em 14 casos, zona 1 em 12 casos e zona 2 em 38 casos. Procedimentos de debranching do arco aórtico e revascularização extra-anatômica dos troncos supra-aórticos foram realizados em 37 casos para obter um adequado colo aórtico proximal. RESULTADOS: Zona 0. Comprimento do colo proximal: 44±6 mm. Sucesso clínico inicial de 78,6%: dois óbitos (acidente vascular cerebral, um vazamento do tipo Ia. Seguimento médio de 16,4±11 meses com sucesso clínico a médio prazo de 85,7%. Zona 1. Comprimento do colo proximal: 28±5 mm. Sucesso clínico inicial de 66,7%: 0 óbitos, quatro vazamentos do tipo Ia. Seguimento médio de 16,9±17,2 meses com sucesso clínico a médio prazo de 75%. Zona 2. Comprimento do colo proximal: 30±5 mm. Sucesso clínico inicial de 84,2%: dois óbitos (um infarto cardíaco e uma embolização de múltiplos órgãos, três vazamentos do tipo Ia, um caso de conversão para operação aberta. Dois casos de paraparesia/paraplegia transitória tardia foram observados. Seguimento médio de 28,0±17,2 meses com sucesso clínico a médio prazo de 89,5%. CONCLUSÃO: Este estudo e a análise da literatura demonstram que o procedimento híbrido para moléstia do arco aórtico é factível em pacientes selecionados com alto risco para a operação convencional. Nossa experiência ainda é limitada pelo tamanho relativamente pequeno da amostra. Sugerimos reservar a zona 1 para pacientes inadequados para

  6. Proposition of a modification to the VAR process and its application in the consolidation of pressed zircaloy chips and the evaluation of the dynamical system of the electric arc; Proposicao de um processo alternativo a fusao via forno VAR para a consolidacao de cavacos prensados de zircaloy e estudo do sistema dinamico do arco eletrico

    Energy Technology Data Exchange (ETDEWEB)

    Mucsi, Cristiano Stefano

    2005-07-01

    The objective of this work is the investigation of a new process as an alternative to the Vacuum Arc Remelting technology in the consolidation of Zircaloy chips. A procedure is proposed for the recycling of primary Zircaloy scraps by means of a modified VAR furnace. The performed studies were made in order to optimise the low cost new devices added to existing VAR furnace prototype, find ideal operational conditions, evaluate data acquisition system and the electric arc dynamical system in order to made viable the automated control of the modified VAR prototype. A funnel-crucible special device was developed and installed in a VAR prototype furnace allowing ingots to be obtained from pressed chips. This indicated the viability of creation of a new process for the consolidation of Zircaloy chips. The voltage of the electric arc during the melting runs was digitally recorded allowing the evaluation of the electric arc dynamics by using the topological invariant of the system: correlation dimension and the higher Liapunov exponent. (author)

  7. Método integral configurable y flexible de ensayo de materiales consumibles de soldadura por arco eléctrico. // Integral, flexible and shaped method for electric arc welding consumable materials test.

    Directory of Open Access Journals (Sweden)

    A. García Rodríguez

    2005-05-01

    Full Text Available La presente publicación propone un método integral configurable y flexible para facilitar el ensayo de materialesconsumibles de soldadura por arco eléctrico en las condiciones tecnológicas para las que han sido diseñados estosmateriales, en relación a la calidad de la unión soldada. Se puede llegar a conclusiones definitivas sobre la calidad de lasoldadura usando un determinado material consumible mediante: la relación operacional de técnicas de inteligencia naturaly/o artificial, el uso de sistemas expertos, el trabajo con bases de datos, la simulación y la realización práctica del procesomientras se registran ciertos parámetros del arco eléctrico, digitalmente procesados estadísticamente y relacionados a losresultados de la caracterización de la unión soldada. El método permite registrar adecuadamente la información referente acada aspecto del proceso exigida en los procesos de certificación de la calidad de los consumibles, así como en lainvestigación dirigida a optimizar la composición química y las propiedades físicas de un material, para obtener calidadesóptimas en un determinado proceso; además es posible obtener las bases de datos de parámetros del arco eléctrico útilespara investigar, desarrollar y valorar métodos y algoritmos para el monitoreo en tiempo real de la calidad de la soldaduradurante un determinado proceso tecnológico de soldadura con arco eléctrico.Palabras Clave: Ensayo, materiales, soldadura, arco eléctrico, estabilidad, calidad, simulación, optimización,unión soldada.___________________________________________________________________________Abstract.This paper presenst an integral, flexible and shaped method that make easy the electric arc welding consumable materials test at thedesigned technological conditions, related to the quality of the welding joint. It is possible to arrive to definitive conclusions about thewelding quality using a fixed material through: operational

  8. Un algoritmo para la realización de grafos con las actividades en los arcos -grafos pert-

    Directory of Open Access Journals (Sweden)

    Angel M. Gento Municio

    2005-01-01

    Full Text Available El problema de dibujar redes con las actividades en los arcos (redes PERT es un problema NP-completo. Diferentes autores (Syslo, 1984 han establecido límites al mismo. En primer lugar debemos diferenciar entre redes con actividades en los nudos y redes con actividades en los arcos. Si las actividades están en los nudos, el dibujo de la red es muy fácil, pero cuando las actividades están en los arcos, generalmente es necesaria la utilización de actividades ficticias para mantener de forma correcta las relaciones entre las actividades. En este artículo se propone un sencillo y didáctico algoritmo para el caso de un pequeño número de nodos donde es necesario un algoritmo intuitivo. En el algoritmo se definen cuatro tipos diferentes de nodos que pueden aparecer en el grafo, permitiéndonos identificar las actividades ficticias tal y como se muestra en un ejemplo.

  9. Geomorfología de la región de los lagos Moquehue y Aluminé: consideraciones acerca de las propuestas Calderas Meseta del Arco y Nacimientos del Aluminé (Neuquén Geomorphology of the Moquehue and Aluminé Lakes: Considerations about the Meseta del Arco and Nacimientos del Aluminé calderas

    Directory of Open Access Journals (Sweden)

    Emilio F. González Díaz

    2010-05-01

    located at the east of the present volcanic arc. In this sector various caldera depressions and associated domic bodies have been identified. From the nine proposed calderas only the Pino Hachado caldera has been studied in detail. The Meseta del Arco and Nacimientos del Aluminé are disregarded as calderas. The erosional genesis of the steep scarps previously interpreted as caldera margins is also identified with glacial erosion. Facies and types of the local Pleistocene glaciation, its extension, their flow direction and its quite probable diffluence (Paso del Arco through coeval glaciers situated north of the international border are also analyzed. Local characteristics of volcanic and eolian morphogenic and the mass-wasting process are described. Brief comments about pre-glacial drainage and the previous proposal of Bío Bío-Aluminé trough on the region are added. Transversal topographic-geological profiles discard west of the Bío Bío-Aluminé Fault a structural unit related to tectonic depression of Bío Bío-Aluminé trough and the Nacimientos del Aluminé and Moquehue calderas.

  10. Estandarización de valores hematológicos de trucha arco iris

    Directory of Open Access Journals (Sweden)

    Mauricio Boyacá Quintana

    2008-10-01

    Full Text Available La trucha arcoiris (Oncorhynchus mykiss es la especie más utilizada con fines piscícolas en las aguas frías continentales de Colombia. En la actualidad, en el Departamento de Boyacá hay pocos estudios relacionados con sus parámetros hematológicos. En consecuencia hallar los valores sanguíneos normales de esta especie, representa, para los sistemas de producción acuícola, la posibilidad de mejorar la producción y productividad de estos modelos de explotación pecuaria. Para efecto de este estudio, se pretende estandarizarlos valores celulares de la sangre de la trucha arcoiris encondiciones de altitud, mediante el cálculo de cada uno delos parámetros que conforman el eritrograma, leucograma, y trombograma, en el pez sano. Esto con el fin de accedera cifras absolutas y conformar indicadores de referencia en los cuales se pueda apoyar el clínico o el truchicultor, para identificar la presencia de circunstancias desfavorables para la salud de la trucha arco iris y un criterio clínico para la indicaciónde tratamientos.

  11. Cálculo independente de dose para tratamentos de arco dinâmico com colimador micromultilâminas Independent dose calculation for dynamic arc treatments delivered with micromultileaf collimator

    Directory of Open Access Journals (Sweden)

    Juan Fernando Delgado

    2006-10-01

    Full Text Available OBJETIVO: Em técnicas de tratamento como o arco dinâmico, a verificação manual dos cálculos do sistema de planejamento é muito difícil. Assim, a utilização de ferramentas computacionais é de utilidade e torna-se componente essencial do programa de controle de qualidade. MATERIAIS E MÉTODOS: Foi criado um programa computacional de tipo planilha eletrônica para realizar cálculo independente da dose, ou equivalente das unidades monitoras, nos tratamentos realizados pela técnica de arco dinâmico com micromultilâminas. Os valores de dose calculados, por arco e por tratamento completo, foram comparados aos valores obtidos do sistema de planejamento BrainScan v5.3. O programa desenvolvido foi testado com 229 campos de arco dinâmico que representam 42 tratamentos de crânio. Desses, 109 campos foram calculados em reconstrução tridimensional feita a partir das imagens de tomografia dos pacientes, 109 na reconstrução de um objeto simulador de polimetilmetacrilato e 21 na de um objeto simulador sólido equivalente à água. RESULTADOS: A diferença média de doses totais encontrada nos 42 tratamentos (compostos de um ou mais arcos dinâmicos, entre o programa de verificação e o sistema de planejamento, foi de +1,73%, com desvio-padrão de 0,76%. A diferença máxima encontrada foi de 3,32% e a mínima, de -0,20%. No caso dos 229 arcos testados um a um, a diferença média encontrada foi de 1,61%, com desvio-padrão de 1,04%. Os valores máximos e mínimos das diferenças foram de 4,01% e -2,04%, respectivamente. Em 80,35% dos arcos testados, as doses calculadas acham-se na faixa de ± 2,5% de diferença com relação às doses geradas pelo sistema de planejamento. CONCLUSÃO: O programa apresentado é recomendado para a verificação da dose pontual dos planos de tratamento, como parte do procedimento de garantia de qualidade em radioterapia e radiocirurgia estereotáxica quando se utiliza a técnica de arco dinâmico por meio de um

  12. Simulación de un horno eléctrico de arco CC para aceración: estudio de la región del arco y del baño metálico

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    Ramírez Argáez, Marco Aurelio

    2001-06-01

    Full Text Available A mathematical model was developed to describe fluid flow, heat transfer, and electromagnetic phenomena in the arc and bath regions of DC Electric Arc Furnaces (DCEAF. The model is used to examine the effect on flow patterns and temperature distribution in the bath, under the influence of both an arc and bottom argon injection in steel or steel/slag systems. Validation of the model employed experimental measurements from systems physically related to DC-EAF from literature. For the conditions analyzed, electromagnetic forces dominate the fluid motion in the bath. Buoyancy and shear forces from the arc have a negligible effect in driving the flow; however, they partially counteract the electromagnetic forces. Slag decreases fluid motion in the steel and enhances temperature stratification in the system. Stirring of the bath, using a 3-nozzle inert gas injection system, is found to promote temperature uniformity in the regions near the lateral wall of the furnace.

    Se desarrolló un modelo matemático que describe el flujo de fluidos, transferencia de calor y fenómenos electromagnéticos en las regiones del arco y baño en hornos eléctricos de arco de corriente continua (HEA-CC. El modelo predice patrones de flujo y distribuciones de temperatura bajo la influencia del arco eléctrico y del burbujeo de argón en baños monofásicos (acero ó en sistemas bifásicos (acero / escoria. Para validar, parcialmente, el modelo se usaron mediciones experimentales citadas en la literatura sobre sistemas análogos al HEA. Bajo las condiciones analizadas, el burbujeo de argón domina el flujo de fluidos promoviendo excelente homogenización dentro del baño. La escoria afecta negativamente al mezclado, fomentando la formación de zonas calientes sobre la superficie del acero. El arco eléctrico calienta al baño y lo agita mediante fuerzas electromagnéticas. Asimismo, se encontró que las fuerzas boyantes y de corte sobre la superficie del baño son

  13. Procedimiento para la obtención de cargas últimas de arcos de perfiles conformados en frío

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    Cifuentes-Bulté, H.

    2015-09-01

    Full Text Available This paper deals with a new methodology for the estimation of the strength of circular arches with cold-formed trapezoidal section. These cover elements, mainly subjected to compression stress and with circular curvature should be dimensioned taking into account the possibility of buckling instability. Currently, no standard describes a method for calculating the buckling consideration of curved elements. The methodology proposed herein shares the same philosophy of the European buckling curves method established in the Eurocodes. Thus, an experimental coefficient considering the effects of buckling and geometrical and mechanical imperfections depending on the slenderness of the considered arch have been obtained. For this, it was necessary to determine the experimental strength of at least three arcs, which radius and spans are sufficiently differentiated.En este trabajo se presenta una metodología de cálculo para la determinación de la carga última de arcos circulares con perfiles trapezoidales conformados en frío. Estos elementos de cubierta, sometidos fundamentalmente a esfuerzos de compresión y de directriz curva, deben ser dimensionados teniendo en cuenta la inestabilidad por pandeo. Actualmente, ninguna normativa describe un procedimiento de cálculo para la consideración del pandeo en elementos curvos. La metodología aquí planteada se basa en la filosofía de las curvas europeas de pandeo establecidas en los Eurocódigos. Así, se ha obtenido un coeficiente reductor empírico que considera los efectos del pandeo conjuntamente con imperfecciones geométricas y mecánicas en función de la esbeltez del arco considerado. Para ello, es necesario determinar la carga última experimental de al menos tres arcos, cuyos radios y luces se encuentren lo suficientemente diferenciados.

  14. Petrological and Geochemical data of Porphyritic Dikes from the Capo Arco Area (Eastern Elba Island, Northern Tyrrhenian Sea).

    OpenAIRE

    E. PANDELI; A.P. SANTO; Morelli, M.; L. ORTI

    2006-01-01

    New geological surveying at a 1:10.000 scale (CARG Project) allowed to refine the stratigraphic, structural and magmatic setting of the Elba Island. This paper aims at characterizing two dikes of likely Late Miocene age (Casa Carpini dikes), previously defined as lamprophyres (i.e. kersantite), outcropping in eastern Elba, on the eastern and southern slopes of the Monte Arco, close to Porto Azzurro. The grey to light-grey Casa Carpini dikes, the phyllites and metasandstones of the Ligurian-Pi...

  15. Estudio histórico-arqueológico de la muralla sureste de Arcos de la Frontera (Cádiz

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    Alonso-Ruiz, Manuel María

    2013-12-01

    Full Text Available Due to the project developed by the technicians of the Municipality of Arcos de la Frontera in order to restore the visible remains of the Medieval wall preserved in the southeastern area of this town, the authors of this paper conducted the archaeological excavation, drawing survey and study of this enclosure. As a result of these analysis have been identified eight constructive periods, grouped into three cycles. With the aim of obtaining a better understanding of this monument, these activities have been completed with the use of written sources, the urban fieldwork, the study of micro-toponymy, the analogy with other architectural elements and, to a lesser extent, with the information provided by the archaeological materials. The results of these analyses make possible to propose a reasonable hypothesis regarding the foundation of the wall and the relationship between its three southeastern gates. The conclusions mean an approach to the urban development of this area of Arcos de la Frontera from al-Andalus times until the late Modern Age.Con motivo del proyecto elaborado por los técnicos del Ayuntamiento de Arcos de la Frontera para la restauración del tramo de muralla medieval conservada en el sureste de esta localidad, los autores de este artículo realizaron la intervención arqueológica, documentación planimétrica y estudio de dicha cerca. Como resultado de estas actuaciones se han identificado ocho períodos edificatorios, agrupados en tres grandes ciclos. De cara a obtener una mayor comprensión del objeto de estudio, estas actuaciones se han completado con el recurso a las fuentes escritas, la prospección urbana, el estudio de la microtoponimia, la analogía con otros elementos arquitectónicos y, en menor medida, con la información aportada por los materiales arqueológicos. Los resultados de estos análisis permiten el planteamiento de una hipótesis razonable para la fundación de la muralla y la relación entre las tres

  16. Diseño mecánico de un sistema automático para conformar arcos correctores para ortodoncias

    OpenAIRE

    Castell Blanque, Toni

    2005-01-01

    Este proyecto presenta el diseño mecánico de una máquina cuyo objetivo es conformar arcos correctores para ortodoncia. Dicho proyecto se enmarca en uno mayor que plantea un cambio radical en el tratamiento de la ortodoncia lingual, basándose en la generación de arcos totalmente personalizados para cada paciente. El sistema automático está compuesto por un equipo de captura de imágenes de la dentadura del paciente a partir de la cual se genera un modelo digital; sobre este modelo y co...

  17. Comparación de carga inmediata frente a carga convencional de implantes inmediatos con prótesis fijas de arco completo

    OpenAIRE

    Peñarrocha Oltra, David

    2014-01-01

    Comparación de carga inmediata frente a carga convencional de implantes inmediatos con prótesis fijas de arco completo. OBJETIVOS El propósito del estudio fue evaluar las diferencias entre los protocolos de carga inmediata y carga convencional para rehabilitar a pacientes con el maxilar o la mandíbula parcialmente desdentados en los que esté indicada la extracción de todos los dientes remanentes, con prótesis fijas de arco completo sobre implantes dentales inmediatos y no inmediatos, e...

  18. Análise geométrica e capacidade de carga de pontes em arco de alvenaria do Noroeste Peninsular

    OpenAIRE

    Oliveira, Daniel V.; Lourenço, Paulo B.; Lemos, Cláudia

    2011-01-01

    Neste trabalho apresenta-se os resultados de um levantamento geométrico realizado em 59 pontes em arco de alvenaria das áreas geográficas do Norte de Portugal e Noroeste de Espanha. Com base na discussão dos resultados geométricos, foram definidas oito pontes de referência, representativas da amostra. Posteriormente, o artigo trata a avaliação da capacidade de carga das pontes de referência. Verificou-se que a espessura do arco e as propriedades físicas do material de enchimento são de primor...

  19. Os tradutores da Casa do Arco do Cego e a ciência iluminista: a conciliação pelas palavras The translators working at Casa do Arco do Cego and the enlightened science: conciliation through words

    Directory of Open Access Journals (Sweden)

    Alessandra Ramos de Oliveira Harden

    2011-12-01

    Full Text Available Entre 1799 e 1801, funcionou em Lisboa a Casa Literária do Arco do Cego. Voltada para a publicação de obras científicas e didáticas ligadas à aplicação das ciências naturais, a Arco do Cego foi dirigida pelo frei José Mariano da Conceição Veloso, naturalista brasileiro e tradutor incansável. Para realizar o objetivo de trazer o progresso para o reino português por meio da instrução, as atividades da Arco do Cego ocorreram dentro de um sistema de mecenato em que a coroa portuguesa arcava com as despesas dos projetos. Essas despesas incluíam aquelas referentes ao pagamento dos tradutores recrutados por Frei Veloso, como Manoel Jacinto Nogueira da Gama, matemático, filósofo naturalista e professor que traduziu obras nas áreas de matemática e engenharia. As traduções publicadas sob a supervisão de Veloso eram introduzidas por dedicatórias e prefácios de tom laudatório escritos pelos tradutores, que assim reconheciam seu débito com a monarquia e declaravam sua fidelidade à Coroa e às tradições portuguesas. O objetivo deste trabalho é mostrar que esses paratextos funcionaram como instrumentos para a aceitação dos princípios científicos iluministas, pois as ideias progressistas eram apresentadas aos leitores portugueses por discursos comprometidos com as tradições do antigo regime português e com a retórica escolástica.Between 1799 e 1801, the publishing house Casa Literaria do Arco do Cego was fully active in Lisbon and dedicated to publishing scientific and didactic works regarding the application of natural scientific knowledge. It was run by Friar José Mariano da Conceição Veloso, a Brazilian naturalist and tireless translator. To accomplish its aim of bringing progress to the Portuguese kingdom through instruction, Arco do Cego held its activities within a system of patronage in which the Portuguese crown would pay for all of its expenses, including the payment of the translators working for Veloso. One

  20. Obtención simultánea de ferroaleación multicomponente y escoria a partir de arenas negras, para el desarrollo de consumibles de soldadura por arco eléctrico

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    Quintana-Puchol, R.

    2004-08-01

    Full Text Available In this paper, chemical and mineralogical characterizations of the black sands of the Mejias placer of Sagua de Tánamo (the most important beach littoral placer of the northwest of oriental Cuba are exposed. Starting from these characterizations a calculation strategy is developed for the making of the metallurgical load that allows to obtain simultaneously, when processed by carbothermic reduction in an electrical arc furnace, a multicomponent ferroalloy and a useful slag for the making of electric arch welding consumables. The powder of the obtained slag is agglomerated with liquid glass. The resulting pellets, due to their behavior on the submerged arc welding (SAW present technological and metallurgical properties that correspond with the requirements of an agglomerated flux matrix. The chemical composition of the multicomponent ferroalloy is constituted by metallic elements of high metallurgical and alloyed values (V, Cr, Mo, Ti, Nb. It is appropriate for the formulation of consumables for manual welding (SMAW and SAW, as well.

    En este trabajo se expone una caracterización química y mineralógica de las arenas negras del placer Mejías de Sagua de Tánamo, el más importante placer litoral de playa del noroeste de Cuba Oriental. A partir de estas caracterizaciones se desarrolla una estrategia de cálculo para la confección de la carga metalúrgica, que permite obtener, simultáneamente, al ser procesada por reducción carbotérmica en un homo de arco eléctrico, una ferroaleación multicomponente y una escoria útil para la confección de consumibles de soldadura por arco eléctrico. El polvo de la escoria obtenida se aglomera con vidrio líquido. Los pelets resultantes y su comportamiento en la soldadura automática por arco sumergido (SAW, presentan propiedades metalúrgicas y tecnológicas que satisfacen los requisitos de una matriz de un fundente aglomerado. La composición química de la ferroaleación multicomponente est

  1. Apuntes sobre la geografía eclesiástica de Ourense: Tourém, Lama de Arcos, «Couto Mixto» y «Pueblos Promiscuos»

    Directory of Open Access Journals (Sweden)

    Hernández Figueiredo, José Ramón

    2014-12-01

    Full Text Available Meet the ecclesiastical geography of a diocese is to be a key task to understand their historical memory. The previously unknown files of the Vatican offer valuable information for knowing the lights and shadows of the Diocesan Church in the contemporary period. Presented in this article document processes of the dismemberment of the parish church of St. Peter of Tourém and St. Mary of Lama de Arcos, and the solution to the question of the “Couto Mixto” and “Pueblos Promiscuos”, and the last under the decree of the Congregation Consistorial of 1954.Conocer la geografía eclesiástica de una diócesis resulta ser una tarea fundamental para comprender su memoria histórica. Los inéditos fondos vaticanos ofrecen una valiosa información para conocer las luces y las sombras de la Iglesia diocesana en el periodo contemporáneo. En este artículo se presentan los procesos documentales del desmembramiento de las parroquias de San Pedro de Tourém y Santa María de Lama de Arcos, así como la solución a la cuestión del “Couto Mixto” y los “Pueblos Promisicuos”, y el último arreglo del decreto de la Congregación Consistorial de 1954. [gl] Coñecer a xeografía eclesiástica dunha diocese resulta ser unha tarefa fundamental para comprender a súa memoria histórica. Os inéditos fondos vaticanos ofrecen unha valiosa información para coñecer as luces e as sombras da Igrexa diocesana no periodo contemporáneo. Neste artigo preséntanse os procesos documentais do desmembramento das parroquias de San Pedro de Tourém e Santa María de Lama de Arcos, así como a solución á cuestión do “Couto Mixto” e os “Pobos Promisicuos”, e o último arranxo do decreto da Congregación Consistorial de 1954.

  2. CARACTERIZAÇÃO MORFODINÂMICA E SEDIMENTOLÓGICA DO SEMI-ARCO PRAIAL BARRA DE SÃO JOÃO-BARRA DO UNA, RJ

    Directory of Open Access Journals (Sweden)

    Fernanda Costa de Andrade

    2010-09-01

    Full Text Available Este estudo teve como principal objetivo a caracterização morfodinâmica e sedimentológica do semi-arco praial entre o Cabo Búzios e a cidade de Barra de São João, no litoral norte do Estado do Rio de Janeiro. A amostragem foi realizada em seis perfis ao longo do semi-arco praial durante onze meses consecutivos. As mudanças espaciais e temporais do perfil da praia foram associadas às analises granulométricas de 558 amostras. Os parâmetros sedimentológicos analisados foram matéria orgânica, calcário, material particulado fino e teor de umidade. Os resultados indicam que os setores norte e sul deste semi-arco possuem características morfodinâmicas e sedimentológicas distintas. Ao norte há um predomínio de areia grossa (tamanho médio de 0,66mm, entretanto a granulometria diminui em direção ao sul do semi-arco. A comparação entre perfis topográficos mostrou um perfil praial extremamente suave nas áreas ao sul, com valores variando de 1/41m a 1/18m de declive. Ao norte, observouse perfil topográfico bastante inclinado (1/6m, sem grandes variações na morfologia e largura de praia. O que se observa neste semi-arco é que a energia de onda atinge-o de maneira distinta, criando estes dois setores com características morfodinâmicas e sedimentológicas distintas.

  3. Sistema de visão por infravermelho próximo para monitoramento de processos de soldagem a arco Near-infrared vision system for arc-welding monitoring

    Directory of Open Access Journals (Sweden)

    Carolina Pimenta Mota

    2013-03-01

    Full Text Available A visão, o sentido predileto do ser humano, e sua grande capacidade de captar, processar e interpretar grandes quantidades de dados de natureza visual tem sido, ao longo dos anos, um grande estímulo para o desenvolvimento de técnicas e de dispositivos tecnológicos que a reproduzam num sistema computacional. Nos processos de soldagem, a visão pode fornecer dados na inspeção e qualidade da junta soldada, no monitoramento de parâmetros, na correção de trajetórias até, por fim, no estudo dos fenômenos envolvidos no processo. Porém, a radiação luminosa emitida pelo arco representa uma barreira para tais estudos baseados na visualização do processo. Uma das formas utilizadas atualmente para se obter a visualização do processo, sem a interferência do arco, consiste em iluminar o processo com o infravermelho próximo e utilizar filtros de interferência (passa-faixa, em torno deste mesmo comprimento de onda, durante a aquisição das imagens. Uma solução para a iluminação infravermelha, de aplicação crescente, envolve o uso de diodos laser de alta potência, com baixo custo e menor complexidade de instalação do que os lasers convencionais. Desta forma, a proposta deste trabalho foi a criação de um sistema de visão dos processos de soldagem a arco, de baixo custo e alta flexibilidade, indo desde a caracterização dos espectros de emissão luminosa do arco, passando pela criação de uma topologia de acionamento para o diodo de alta potência no infravermelho próximo, respeitando suas limitações de uso e maximizando a potência luminosa emitida, criação dos circuitos de controle, escolha dos equipamentos e componentes ópticos e, por fim, projeto e aplicação de um protótipo em processos de soldagem. As limitações do sistema de visão, como um todo, foram encontradas através de sua aplicação com soldagem TIG e MIG/MAG. Nestes ensaios, embora não tenha sido capaz de sobrepor a luz do arco, o sistema

  4. Entomofauna associada a reflorestamentos experimentais no município de Pau d'Arco, Pará Entomofauna associated with experimental reforestation in Pau d'Arco, Pará

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    Alexandre Mehl Lunz

    2011-12-01

    Full Text Available Este estudo objetivou verificar a ocorrência de insetos em reflorestamentos experimentais com paricá, Schizolobium parahyba var. amazonicum (Fabaceae; acácia, Racosperma mangium (Fabaceae e teca, Tectona grandis (Lamiaceae, na região de Pau d'Arco, PA, associando os efeitos sazonais e ontogenéticos nos plantios. O estudo foi conduzido entre os meses de maio de 2006 a junho de 2007 e constou de levantamentos mensais de insetos associados a plantios com idades de três a 16 meses. Houve associação positiva entre a ocorrência de insetos e suas respectivas injúrias com a sazonalidade e o desenvolvimento das plantas. Ao menos um pico populacional de insetos desfolhadores, sugadores e/ou polinizadores foi observado nas três espécies florestais. A análise de agrupamento confirmou a associação entre ocorrência de insetos, período chuvoso e idade da planta, destacando-se (a lepidópteros em T. grandis, (b coleópteros desfolhadores em S. parahyba; (c acridídeos e lepidópteros em R. mangium; (d cicadelídeos em S. parahyba e T. grandis; e (e apídeos em R. mangium.This study aimed to verify the occurrence of insects in experimental reforestation with Schizolobium parahyba var. amazonicum (Fabaceae known as paricá, Racosperma mangium (Fabaceae known as acacia and Tectona grandis (Lamiaceae known as teca in the region of Pau d'Arco, Pará State, Brazil associating the seasonal and ontogenetic effects in plantations. The study was conducted from May 2006 to June 2007 and consisted of monthly surveys of insects associated with plantations aging 3 to 16 months. There was a positive association between the occurrence of insects and their injuries with seasonality and plant development. At least one population peak of defoliators, sucking and / or pollinators were observed in three tree species. Cluster analysis confirmed the association between the occurrence of insects, rainy season and plant age, especially (a lepidopteran in T. grandis, (b

  5. Treatment of Allergic Rhinitis Is Associated with Improved Attention Performance in Children: The Allergic Rhinitis Cohort Study for Kids (ARCO-Kids)

    OpenAIRE

    Dong-Kyu Kim; Chae Seo Rhee; Doo Hee Han; Tae-Bin Won; Dong-Young Kim; Jeong-Whun Kim

    2014-01-01

    BACKGROUND: It has been well known that pediatric allergic rhinitis was associated with poor performance at school due to attention deficit. However, there were no cohort studies for the effect of treatment of allergic rhinitis on attention performance in pediatric population. Thus, the aim of this study was to investigate whether attention performance was improved after treatment in children with allergic rhinitis. METHODS: In this ARCO-Kids (Allergic Rhinitis Cohort Study for Kids), consecu...

  6. Aislamiento de Saprolegnia sp. (Fungi: Saprolegniaceae de Onchorhyncus mykiss (Pisces: Salmonidae “trucha arco iris” en cutiverio

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    Libertad Alzamora

    2014-06-01

    Full Text Available El objetivo del estudio fue demostrar el origen infeccioso de la mortandad de alevinos y de las lesiones presentadas en adultos de Oncorhynchus mykiss Walbaum 1792, "trucha arco iris", en la piscigranja "El Ingenio», empleando una metodología simple y efectiva. Se colectaron alevinos, ovas, adultos y muestras de agua de las pozas de alevinos. Las muestras se cultivaron sobre semillas de Cucurbita maxima ‘zapallo’, como sustrato, evidenciándose colonias típicas a los siete días. Las características microscópicas de las hilas correspondieron al patrón gráfico de Saprolegnia sp., lo que concuerda con la sintomatología observada en los adultos capturados. La presencia de este patógeno estaría relacionada con la elevada mortandad registrada en los alevinos (40%, probablemente por la importación de las ovas infectadas con el hongo. El método fue electivo, porque el sustrato empleado, favoreció el crecimiento del hongo, y es de fácil aplicación y bajo costo.

  7. Dos lienzos firmados por Alonso del Arco en la parisina iglesia Saint-François de Sales

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    Delenda, Odile

    2004-09-01

    Full Text Available El inventario detallado realizado en las iglesias de París por los conservadores des Oeuvres d'Art Religieuses et Civiles del ayuntamiento de la capital francesa, puede reservar gratas sorpresas. Muy recientemente Guénola Groud, conservateur du Patrimoine y su equipo, pudieron localizar en la «Salle des mariages» de la nueva iglesia de Saint-François-de-Sales (Paris, XVIIème dos importantes lienzos de medio punto, la Adoración de los Pastores (Fig. 2 y la Adoración de los Magos (Fig. 1 firmados por el pintor Alonso del Arco (1635-1704 colaborador y discípulo de Antonio Pereda. Existen en efecto dos iglesias Saint-François-de-Sales. La más antigua, de 1873, está situada en la calle Brémontier mientras que la más reciente, construida entre 1911 y 1913, tiene su entrada principal en la calle Ampère…

  8. Ressecção completa do arco zigomático na fase de crescimento: estudo experimental em ratos

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    Procópio Antônio Sílvio Fontão

    2002-01-01

    Full Text Available Foram avaliados, por meio de mensurações cefalométricas, os resultados decorrentes da ressecção unilateral total do arco zigomático em ratos Wistar. As ressecções foram realizadas com um mês de idade e os animais foram sacrificados com três meses de idade. O crânio e as hemimandíbulas foram submetidos, respectivamente às incidências radiográficas axial e lateral e, com base nestas, foram feitas mensurações por meio de um sistema de computador, comparando-se um lado com o outro, e os valores obtidos foram submetidos a análise estatística. Houve diferença significante na amplitude da fossa temporal mas não houve diferença significante para as demais mensurações da maxila. Houve diferença significante, a menor para a altura do corpo e comprimento da base da mandíbula no lado operado.

  9. Eficiencia de la transferencia de elementos aleantes en fundentes durante el proceso de soldadura automática por arco sumergido

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    Quintana, R.

    2003-02-01

    Full Text Available It is assessed the transfer of chromium, manganese and carbon of different agglomerate fluxes constituted by 18.75 % of alloyed load and 81.25 % of matrix during the SAW process (Submerge Arc Welding. A vitreous basic matrix corresponding to the system SiO2-Al2O3-(CaO+MgO was obtained from minerals by fusion in the electric arc furnace. The current proportions of the alloyed load components (FeCr, FeMn and graphite were carried out using a McLean Anderson experiment design. The corresponding fluxes to each experimental point were obtained by granulation with liquid glass; afterwards, their transfer coefficient for a given regimen of welding was determined. The transfer coefficients were calculated by means of a formula based on the laws of mass conservation and of distribution.

    Se realizó un estudio de la transferencia de cromo, manganeso y carbono durante el proceso SAW (Submerged Arc Welding de diferentes fundentes aglomerados constituidos por 18,75 % de carga aleante y 81,25 % de matriz. En homo eléctrico de arco, mediante la fusión de mezclas de minerales, se obtuvo una matriz básica vitrea, correspondiente al sistema SiO2-Al2O3 -(CaO+MgO. La proporción en que se encuentran los componentes de la carga aleante (FeCr, FeMn y grafito se estableció a través de un diseño de experimentos del tipo McLean Anderson. Los fundentes correspondientes a cada punto experimental se obtuvieron por rodadura, utilizando vidrio líquido como aglomerante. A los fundentes obtenidos se les determinaron los coeficientes de transferencia para un régimen de soldadura invariable, utilizando para ello una expresión de cálculo basada en las leyes de conservación de masa y de reparto.

  10. Metalogenia asociada a las ofiolitas y al arco de islas del cretácico del nordeste de Cuba

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    Roberto Díaz-Martínez

    2005-03-01

    Full Text Available Los estudios metalogénicos revelaron tres distritos mineros con yacimientos de cromitas metalúrgicas y refractarias, con o sin platinoides, asociados a la Faja Ofiolítica Mayarí-Baracoa y tres sectores con mineralizaciones de oro y plata, cobre-plomo-zinc y cupro-pirítica con oro refractarias, se ubican estructuralmente en la Zona de Transición Manto-Corteza. Los cuerpos de cromititas del distrito Moa-Baracoa, ricos en cromitas son cúmulos ultramáficos y cuerpos de gabroides. Las cromititas del distrito Mayarí están constituidas por cuerpos de cromitas metalúrgicas ubicadas estructuralmente en los niveles más profundos del manto superior; éstos se asocian a las harzburgitas del complejo de tectonitas. Los cuerpos de cromititas del distrito Sagua de Tánamo poseen cromitas de ambos tipos. El Arco de Isla del Cretácico posee una metalogenia muy variada, caracterizada por el predominio de manifestaciones de oro y plata, cobre-plomo-zinc y cupro-pirítica. Estas se asocian a diabasas, andesitas y basaltos toleíticos de las zonas de retroarco y de antearco; las de retroarco poseen tendencia boninítica. La metalogenia exógena de la región se caracteriza por la abundancia de placeres marino-costeros, eluviales y aluviales, con minerales de interés económico tales como magnetita, cromita, ilmenita, oro y minerales del grupo del platino.

  11. Stratigraphy of the Lower Bambuí Group in the Arcos Region (MG: a Contribution from Boreholes

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    Marly Babinski

    2011-08-01

    Full Text Available This study presents the fi rst results of the sample analysis of two boreholes drilled in a quarry located in the Arcos region(MG. Petrographic analysis (macro- and microscopic observations was performed and made possible to study in detailan approximately 175 meter-section, which shows the basement and 10 sedimentary units. The basement is represented bydark green to gray fi ne- to medium-grained granodiorite. At the base of the sedimentary sequence, Unit 1 is representedby a decimetric layer of polymictic diamictite and is overlain by the impure limestones of Unit 2. Unit 3 is carbonatic andcontains calcilutite and layers of carbonaceous shale. This unit gradually changes to Unit 4, which is composed of marland mudstone. Unit 5 is composed of a thick sequence of massive calcarenites, which begins to show lamellar layers andmicrobial structures in Unit 6. Unit 7 is similar to the previous one, but contains several intraclastic layers. The numberof lamellar layers decreases sharply, giving rise to a thick interval with considerable granulometric variations in Unit 8, which grades to the oolitic calcarenite of Unit 9. At the top of the sequence, Unit 10 is a thick package of stromatolitic dolarenite. Thisstratigraphic arrangement allows the identifi cation of progradational/retrogradational trends. The sedimentological features, especially those present in the basal portion, suggest that at least part of the carbonatic sequence could represent a cap carbonate, supporting a glacial origin for the diamictite. Other data also collected from the basal units suggest that changes occurred in the source area at the beginning of the fi lling of the basin.

  12. Liga NiCrSiBC: Microestrutura e Dureza de Revestimentos Processados a Arco e a Laser

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    Leandro J. da Silva

    2015-03-01

    Full Text Available A técnica de processamento é determinante sobre características de um revestimento. Isso porque o aporte térmico, que depende da técnica e dos parâmetros, tem influência sobre a diluição e a taxa de solidificação. Em ligas com baixa complexidade metalúrgica, o impacto do processamento com técnicas de deposição que impõem maior taxa de resfriamento podem se traduzir em refino da microestrutura. Espera-se que quanto mais refinada a microestrutura maior a resistência mecânica do revestimento. Entretanto, na deposição de ligas de maior complexidade metalúrgica isso nem sempre ocorre, porque a elevada taxa de resfriamento pode suprimir formação/precipitação de fases responsáveis pela resistência. Neste estudo, a influência do processamento sobre microestrutura e dureza de revestimentos da liga Colmonoy-6® foi avaliada. A liga foi processada por plasma com arco transferido (PTA e laser de diodo de alta potência (HPDL sobre chapas de AISI 304 com dois níveis de diluição. Em ambos os casos, revestimentos de boa qualidade e livres defeitos foram obtidos. O aumento do teor de Fe (diluição e as diferentes taxas de resfriamento decorrem do processamento com diferentes parâmetros e técnicas. Em consequência, ocorrem mudanças significativas na microestrutura e na dureza dos revestimentos que estão associadas à distribuição, morfologia e composição química dos carbonetos e, principalmente, dos boretos.

  13. Las arenas negras de Mejías: nueva fuente para la obtención de consumibles para la soldadura por arco eléctrico

    OpenAIRE

    Amado Cruz-Crespo; Luis Gómez-Rodríuez; Lorenzo Perdomo-González; Rafael Quintana-Puchol

    2001-01-01

    A partir de la caracterización química y mineralógica de las fracciones pesadas, magnéticas y electromagnéticas de las arenas negras del placer de Mejías, se logró confeccionar una carga metalúrgica para obtener una escoria útil como matriz de fundentes para la soldadura automática (SAW) y una ferroaleación como carga aleante para diferentes consumibles de soldadura por arco eléctrico. La escoria obtenida presenta una composición de óxidos que garantiza las propiedades metalúrgicas y tecnológ...

  14. Pautas en la fragmentación de la forma urbana en las ciudades del arco mediterráneo español

    OpenAIRE

    Martí Ciriquián, Pablo; Ponce Herrero, Gabino

    2011-01-01

    Se propone analizar las pautas de crecimiento de las principales ciudades que conforman el Arco Mediterráneo español; para ello, se plantea estudiar las características de las nuevas ocupaciones del suelo y su relación con la ciudad existente. Estas nuevas tendencias urbanas y territoriales suponen un cambio importante en la utilización del territorio que conlleva nuevas relaciones espaciales y funcionales. Los objetivos del trabajo se centran, por tanto, en la identificación y caracterizació...

  15. Atmospheric pressure plasma produced inside a closed package by a dielectric barrier discharge in Ar/CO2 for bacterial inactivation of biological samples

    DEFF Research Database (Denmark)

    Chiper, Alina Silvia; Chen, Weifeng; Mejlholm, Ole;

    2011-01-01

    The generation and evaluation of a dielectric barrier discharge produced inside a closed package made of a commercially available packaging film and filled with gas mixtures of Ar/CO2 at atmospheric pressure is reported. The discharge parameters were analysed by electrical measurements and optical...... emission spectroscopy in two modes of operation: trapped gas atmosphere and flowing gas atmosphere. Gas temperature was estimated using the OH(A–X) emission spectrum and the rotational temperature reached a saturation level after a few minutes of plasma running. The rotational temperature was almost three...

  16. Mudanças dimensionais dos arcos dentários em crianças entre 3 e 6 anos de idade Changes in dental arches dimensions of 3 to 6 year old children

    OpenAIRE

    Taís Cristina dos Santos Dinelli; Lídia Parsekian Martins; Ary dos Santos Pinto

    2004-01-01

    Para o presente trabalho, 235 crianças pertencentes às creches da Prefeitura Municipal de Araraquara foram avaliadas e moldadas com um dispositivo confeccionado com cera utilidade e palito abaixador de língua na forma dos arcos dentários. No intervalo de um ano as mesmas crianças foram remoldadas afim de se verificar se houveram ou não mudanças nas dimensões do arco dentário decíduo. A partir da obtenção dos modelos em gesso, foram realizadas medições por meio de um dispositivo digitalizador ...

  17. Influencia del modo de transferencia por arco pulsado en el proceso de soldadura GMAW con alambre compuesto con núcleo metálico sobre la soldabilidad del acero ASTM A 131 grado AH32

    OpenAIRE

    Romero Nieto, Sandra Patricia

    2012-01-01

    Este trabajo estudia la influencia de la transferencia de arco pulsado en el proceso de soldadura GMAW con alambre compuesto de núcleo metálico, en uniones soldadas de acero ASTM A131 grado AH 32 utilizando dos composiciones de gas de protección y los modos de transferencia de arco pulsado y corto circuito. Las propiedades mecánicas y la microestructura se evaluaron y los resultados indican que se logra mayor resistencia a la tensión y un perfil de dureza más homogéneo utilizando el modo de t...

  18. Expressão da enzima indoleamina-2,3-dioxigenase em truta arco-íris (Oncorhynchus mykiss

    Directory of Open Access Journals (Sweden)

    Fernanda Cardoso

    2015-10-01

    Full Text Available Resumo: A indoleamina 2,3-dioxigenase (IDO é uma enzima que cataboliza o aminoácido triptofano, levando à inibição da proliferação de linfócitos T, seja pela exaustão desse aminoácido no ambiente, ou pela indução via catabólitos induzindo-os a apoptose. Em mamíferos, esta enzima atua em diversas condições do organismo como a gestação, infecções, inflamações crônicas, transplantes e tumores, atuando na regulação imunológica. Estudos recentes identificaram a presença de moléculas homólogas a IDO em espécies filogeneticamente inferiores, cuja função parece estar restrita ao metabolismo do triptofano como fonte de energia. Este estudo teve por objetivo averiguar a expressão da IDO em células sanguíneas e órgãos hematopoiéticos de truta arco-íris pela imuno-histoquímica, buscando evidências de que a mesma poderia, nesta espécie, estar relacionada ao sistema imune. A expressão de IDO foi observada nos órgãos hematopoiéticos estudados incluindo o rim cefálico que apresentou marcação em células interrenais e leucócitos; baço, na qual a marcação restringiu à alguns leucócitos; no fígado a marcação ficou limitada à apenas algumas células dentro dos vasos sanguíneos e nas extensões sanguíneas pode-se visualizar a marcação de alguns leucócitos como os monócitos, linfócitos e neutrófilos. A predominância da marcação da IDO nesses tecidos pode constituir uma evidência de que a IDO identificada na O. mykiss esteja relacionada ao sistema imunológico nessa espécie.

  19. Las arenas negras de Mejías: nueva fuente para la obtención de consumibles para la soldadura por arco eléctrico

    Directory of Open Access Journals (Sweden)

    Amado Cruz-Crespo

    2001-03-01

    Full Text Available A partir de la caracterización química y mineralógica de las fracciones pesadas, magnéticas y electromagnéticas de las arenas negras del placer de Mejías, se logró confeccionar una carga metalúrgica para obtener una escoria útil como matriz de fundentes para la soldadura automática (SAW y una ferroaleación como carga aleante para diferentes consumibles de soldadura por arco eléctrico. La escoria obtenida presenta una composición de óxidos que garantiza las propiedades metalúrgicas y tecnológicas de la matriz de fundente deseado. La aleación compleja lograda por reducción carbotérmica en horno de arco eléctrico con crisol de grafito presenta relativamente altos contenidos de Mo (2,87 %, Nb(> 1,80 %, V(>1,20 %, entre otros elementos metálicos de alto valor metalúrgico para la soldadura manual (SMAW y automática (SAW.

  20. Edentulism and shortened dental arch in Brazilian elderly from the National Survey of Oral Health 2003 Edentulismo dental y arco dental reducido en ancianos de la Pesquisa Nacional de Salud Bucal 2003 Edentulismo e arco dental reduzido em idosos do Inquérito Nacional de Saúde Bucal 2003

    Directory of Open Access Journals (Sweden)

    Marco Túlio Freitas Ribeiro

    2011-10-01

    edentulismo y estimar la prevalencia de dentición funcional y arco dentario reducido en ancianos. MÉTODOS: Estudio epidemiológico poblacional con 5.349 individuos de 65 a 74 años del banco de datos de la pesquisa nacional de salud bucal del Ministerio de la Salud/Coordinación Nacional de Salud Bucal en 2002 y 2003. Se evaluaron pérdida dentaria; cumplimiento de la meta de la Organización Mundial de Salud para el grupo etario (50% con al menos 20 dientes; presencia de arco dental reducido, número de pares en oclusión posterior; sexo y macro-región de la residencia. La prueba de chi-cuadrado evaluó la asociación entre variables categóricas. Las pruebas Kruskal-Wallis y Mann-Whitney fueron usadas para determinar diferencias del número promedio de pares de dientes posteriores en oclusión, macro-región y sexo. RESULTADOS: Los ancianos tenían, en promedio, 5,49 dientes (DE= 7,93 (mediana =0. El porcentaje de individuos totalmente edéntulos fue de 54,7%. El edentulismo fue de 18,2% en el arco superior y 1,9% en el inferior. La meta de la Organización Mundial de la Salud fue alcanzada por 10% de los individuos, sin embargo, 2,7% tenían la función masticadora y estética aceptables (con al menos el arco dental reducido. Entre ellos, el número promedio de pares de oclusión posterior fue 6,94 (DE=2,97. La presencia de arco dental reducido fue más frecuente entre hombres, así como el alcance de la meta de la Organización Mundial de la Salud. También se observaron diferencias con relación al arco dental reducido entre las macro-regiones. CONCLUSIONES: El levantamiento epidemiológico de salud bucal brasileña presentó alto porcentaje de edentulismo y bajo arco dental reducido, sugiriendo el comprometimiento funcional y estético considerable en todas las regiones del país, especialmente entre mujeres.OBJETIVO: Descrever a distribuição de edentulismo e estimar a prevalência de dentição funcional e arco dentário reduzido entre idosos. MÉTODOS: Estudo

  1. Sistema embarcado para monitoramento sem fio de sinais em soldagem a arco elétrico com abordagem tecnológica Embedded system for wireless signal monitoring during arc welding with technological approach

    Directory of Open Access Journals (Sweden)

    Marcus Vinícius Ribeiro Machado

    2012-06-01

    Full Text Available Industrialmente, o processo de soldagem a arco é o mais importante na produção e reparo de equipamentos, e sendo um processo especial de fabricação, que não pode ser completamente inspecionado contra imperfeições somente após sua finalização, o monitoramento da produção se faz necessário. Este monitoramento é tecnologicamente requerido pelas normas ISO 3834:2005 e ISO 17662:2005, que dizem que o fabricante deve adotar medidas para garantir a qualidade necessária, além de especificarem os dados que devem ser monitorados e a correta calibração dos sistemas e equipamentos de medida. Este, portanto, pode ser usado para garantir documentação do processo e tomadas de ações corretivas. Existem sistemas que realizam o monitoramento satisfatoriamente, mas o uso de comunicação por cabos e/ou com computador dedicado dificultam suas aplicações industriais. Então, um sistema embarcado, independente, que monitore diferentes sinais do processo de soldagem e que se comunique de forma robusta e flexível a diferentes equipamentos é fundamental para a indústria. Este sistema deve ser de utilização simplificada e apresentar o estado da arte em tecnologia de comunicação. Devido a essa necessidade, foi então projetado e construído um sistema para monitoramento sem fio de sinais em soldagem a arco elétrico, denominado de MoSo Wi-Fi. Três canais de aquisição estão disponíveis (tensão, corrente e velocidade de alimentação de arame, sendo validados pela instrumentação de soldagens TIG CA e MIG/MAG (curto-circuito, goticular e pulsado, demonstrando grande aplicabilidade e robustez a um baixo custo de hardware.Industrially, arc welding process is the most important in equipment production and repair, and being a special manufacturing process, which cannot be completely inspected for flaws only after its completion, production monitoring is necessary. This monitoring is technologically required by ISO 3834:2005 and ISO 17662

  2. Sucesiones volcánico-sedimentarias tremadocianas y arenigianas en la sierra de las Planchadas-Narváez: registros evolutivos del arco magmático Famatiano

    Directory of Open Access Journals (Sweden)

    Clara Eugenia Cisterna

    2010-03-01

    Full Text Available Se analizan secciones volcano-sedimentarias ordovícicas del norte del Sistema de Famatina, aportando nuevos datos petrológicos para la comprensión de la naturaleza de sus magmas y de los procesos volcanológicos asociados con la evolución del arco magmático en la región. Información paleontológica previa, apoyada por estudios estructurales y por las relaciones de intrusividad con una granodiorita de 485 ± 7 Ma, asignaron edades del Tremadociano temprano a las sedimentitas de Las Angosturas y del Arenigiano temprano - medio a las de las secciones Vuelta de la Tolas - Chaschuil y quebrada Larga - Punta Pétrea. Los litotipos que integran la sucesión tremadociana son lavas basálticas, andesíticas, dacíticas y riodacíticas, interestratificadas con limolitas y psamitas finas, polideformadas y con importante alteración hidrotermal, habiéndose reconocido paragénesis de metamorfismo de bajo grado y de contacto. Los depósitos arenigianos, afectados por plegamiento y desarrollo de clivaje localmente, consisten en lavas basálticas, andesíticas, dacíticas y riolíticas, facies hialoclásticas, depósitos resedimentados sin-eruptivos y volcanogénicos. Si bien ambas asociaciones son subalcalinas y peraluminosas, se concluye, para los representantes tremadocianos, que sus características son consistentes con un ambiente donde fueron producidos fundidos de un manto empobrecido (MORB y enriquecidos durante eventos de subducción, asociados con la evolución de una cuenca marginal. Las volcanitas arenigianas muestran filiación geoquímica de arco magmático continental. Ambas asociaciones exhiben características similares a las observadas en la Puna occidental, lo que plantearía la posible continuación en la Puna del arco magmático ordovícico reconocido en el Sistema de Famatina.

  3. Consideraciones acerca del método de los arcos de reducción de datos VLBI astrométricos

    Science.gov (United States)

    de Biasi, M. S.; Arias, E. F.

    Con el propósito de construir un marco de referencia cuasi-inercial, desarrollamos un sistema de coordenadas inercial introduciendo un nuevo observable: el arco entre un par de radiofuentes. Este método proveerá una mejor herramienta para el análisis y reducción de observaciones VLBI. También conducirá a una solución en donde se determinarán independientemente los parámetros astrométricos y geodésicos. En este trabajo analizamos el caso ideal de observaciones simultáneas de un par de radiofuentes y el caso más realista de observaciones cuasisimultáneas.

  4. Biologia reproductiva y estimaciones de poblaciones de la trucha arco iris salmo gairdneri, en dos ríos montañosos de costa Rica

    Directory of Open Access Journals (Sweden)

    Debbie Irwin

    2016-03-01

    También los peces adultos usualmente migran río abajo después del desove y exhiben un comportamiento de territorialidad, lo cual crea mayor dispersión. Se sacrificaron de 5 a 7 individuos por semana para estudiar su biología reproductiva. La proporción de hembras a machos fue de 1,3: 1, indicando esto una distribución aproximadamente igual entre los sexos. Los meses de marzo a abril son los últimos de la época de desove, la cual se calcula comienza en enero. La mayoría de los peces muestreados tenían sus gónadas en las 3 primeras etapas de desarrollo. Unos pocos se encontraron desovando activamente o recientemente gastados. Todo indica que la trucha Arco Iris se reproduce naturalmente en Costa Rica.

  5. Caraterização geométrico-estrutural de pontes em arco de alvenaria na região de Bragança

    OpenAIRE

    Jesus, João Jorge Carrazedo de

    2013-01-01

    A importância das pontes em arco de alvenaria tem vindo a aumentar nos últimos tempos, pois estas são um marco histórico na evolução da humanidade e representam a evolução do engenho do homem ao longo dos séculos. Construídas pelos nossos antepassados, muitas revelaram-se intemporais, algumas delas milenares resistiram até aos dias de hoje, cumprindo ainda com as funções para as quais foram construídas. O salto tecnológico dado no último século permitiu o aparecimento de novos materiais...

  6. Valuación de opciones arcoíris sobre canastas de activos bajo procesos de difusión con saltos

    Directory of Open Access Journals (Sweden)

    Adriana Zambrano Reyes

    2016-01-01

    Full Text Available En este trabajo se estudia la valuación de opciones sobre el máximo o el mínimo (precio o rendimiento de 2 activos riesgosos, conocidas como opciones arcoíris. Se extiende la valuación de estos contratos al caso en que los activos presentan difusiones combinadas con saltos. Los parámetros de los procesos de saltos son estocásticos, y específicamente el tama ̃ no del salto sigue una distribución normal, lo cual hace necesario recurrir a los procesos de Lévy. Se desarrolla una metodología numérica con MATLAB para valuar una opción cesta (o canasta de venta, y un put sobre el máximo y en el mínimo de 2 activos riesgosos; los resultados se pueden extender para el caso de n activos.

  7. La Formación Balbuena, integrante del arco magmático pampeano en la sierra de Ambargasta, provincia de Santiago del Estero

    Directory of Open Access Journals (Sweden)

    M Koukharsky

    2003-12-01

    Full Text Available En un sector de las Sierras Pampeanas Orientales (29°25´ - 29°35´S y 63°43´ - 64°00´O, se estudió un conjunto de diques de acimutes entre 90 y 120° y espesores inferiores a los 10 m, que se incluyen en la Formación Balbuena. Sus composiciones abarcan dacitas, andesitas y andesitas basálticas y son interpretados como los representantes intermedios y básicos de una serie calcoalcalina cuyo extremo ácido se encontraría en los ya conocidos Pórfiros riodacíticos de Oncán aflorantes en el borde occidental del área. Son finamente porfíricos y se caracterizan por una intensa alteración de los componentes máficos y pastas, resultante de una importante actividad deutérica. Intruyen a los granitoides de las Formaciones Ojo de Agua y Ambargasta, ambos del Cámbrico medio a superior según determinaciones isotópicas. Sobre la base de edades K/Ar preexistentes, a las que se añaden dos nuevos valores, sumadas a observaciones de campo, se asignan los diques a un mismo ciclo magmático plutónico-volcánico, confirmando la vinculación ya aceptada en investigaciones anteriores para las volcanitas ácidas. Su signatura geoquímica apoya la existencia de un arco previamente postulado por otros autores y corresponden a una ubicación de arco a retroarco. Se habría desarrollado sobre corteza continental. La Formación Balbuena pertenecería al último de los eventos magmáticos importantes del ciclo Pampeano propuestos para la región.

  8. Arco aórtico derecho, divertículo de Kommerell y arteria subclavia izquierda aberrante Right aortic arch, Kommerell's diverticulum and aberrant left subclavian artery

    Directory of Open Access Journals (Sweden)

    I. Simón-Yarza

    2011-08-01

    Full Text Available La arteria subclavia derecha aberrante o «arteria lusoria» es la variante anatómica más común del desarrollo embrionario de la aorta y sus ramas, llegando a estar presente en un 0,5-2% de la población; con menos frecuencia se puede encontrar una arteria subclavia izquierda aberrante asociada al arco aórtico derecho. Estas variantes anatómicas deben incluirse en el diagnóstico diferencial del ensanchamiento mediastínico superior visible en la radiografía de tórax. Se presenta el caso clínico de un paciente que presentaba arco aórtico derecho y arteria subclavia izquierda aberrante con dilatación en su origen (divertículo de Kommerell como causa de ensanchamiento mediastínico superior de etiología incierta detectado de manera incidental en una radiografía de tórax realizada en un paciente con sintomatología respiratoria.The right aberrant subclavian artery or «arteria lusoria» is the most common anatomical variant of the embryonic development of the aorta and its branches, with a presence in 0.5-2% of the population. Less frequently, a right aortic arch with aberrant left subclavian artery may be present. These anatomical variations should be included in the differential diagnosis of superior mediastinal widening seen on chest radiographs. In this report, we present a right aortic arch with left aberrant subclavian artery dilated at its origin (Kommerell's diverticulum as a cause of superior mediastinal widening detected incidentally on a chest radiograph.

  9. Reservoirs of the basin of Guadalete river (Zahara. El Gastor, Bornos and Arcos) in Cadiz; waters quality and their influence with the drought; Embalses de la cuencia del rio Guadalete (Zahara-El Gastor, Bornos y Arcos) de la provincia de Cadiz: calidad de las aguas y su influencia con la sequia

    Energy Technology Data Exchange (ETDEWEB)

    Rodriguez Barroso, M. R.; Vidal Valderas, L.; Sales Marquez, D.; Quiroga Alonso, J. M.

    2001-07-01

    In this work the results of the limnological study of the reservoirs of the basin of Guadalete river is presented: Zahara-El Gastor, Bonos and Arcos. These reservoirs are part of the hydrography net of the county of Cadiz (south of Spain) and it belongs to the Guadalquivir Hydrography Confederation. The study of physical chemical parameters, together with the data of the climate variations have allowed to know the quality of the dammed water, as well as, to predict certain behaviour rules in the adaptation of the water, in the drinking waters treatment plant for their final destination ad water of supply. The results obtained show a similarity of the waters quality of the reservoirs of Bornos and Arcos, and different to the reservoirs of Zahara-El Gastor because are more saline content. It is showed a progressive decrees of the waters quality dammed during the drought period (1992-1995). In 1995 the water levels was alarmingly lowest. (Author) 19 refs.

  10. Mudanças dimensionais dos arcos dentários em crianças entre 3 e 6 anos de idade Changes in dental arches dimensions of 3 to 6 year old children

    Directory of Open Access Journals (Sweden)

    Taís Cristina dos Santos Dinelli

    2004-08-01

    Full Text Available Para o presente trabalho, 235 crianças pertencentes às creches da Prefeitura Municipal de Araraquara foram avaliadas e moldadas com um dispositivo confeccionado com cera utilidade e palito abaixador de língua na forma dos arcos dentários. No intervalo de um ano as mesmas crianças foram remoldadas afim de se verificar se houveram ou não mudanças nas dimensões do arco dentário decíduo. A partir da obtenção dos modelos em gesso, foram realizadas medições por meio de um dispositivo digitalizador tridimensional denominado MicroScribe-3DX nos instantes inicial (primeira moldagem e final (moldagem após um ano. Foram avaliadas medidas referentes às distâncias inter-segundos molares, interprimeiros molares, intercaninos, perímetro, comprimento de arco e espaços primatas. Consideraram-se ainda dimorfismo sexual, tipo de arco e influência de hábitos. Concluiu-se que as dimensões transversais sofreram aumento significativo na dentadura decídua, enquanto que o perímetro, o comprimento e os espaços primatas permaneceram constantes. As distâncias intermolares apresentaram dimorfismo sexual, com dimensões maiores no gênero feminino. Com relação às medidas de perímetro, comprimento e espaços primatas não ocorreram diferenças significantes em relação ao gênero. As dimensões de comprimento nos arcos não diferem nos arcos decíduos Tipo I e Tipo II de Baume, enquanto que o diâmetro dos arcos Tipo I de Baume, são maiores do que os do Tipo II. Os hábitos de sucção de dedo e chupeta não provocaram alterações nas dimensões dos arcos decíduos no período observado, de um ano.Two hundred and thirty five children enrolled in kindergarden of Araraquara public school system were evalueted and cast models were obtained. For this purpose a special apparatus was confeccioned with utility wax and exam stick following the dental arch form. After an year same children were evaluated again in order to observe possible changes in

  11. Aneurisma do arco aórtico com fístula aorto-pulmonar: tratamento cirúrgico com sucesso Aortic arch aneurysm with aorto-pulmonary fistula: successful surgical repair

    OpenAIRE

    Marcelo Luiz Peixoto Sobral; Luis Alberto Saraiva Santos; Gilmar Geraldo dos Santos; Noedir Antonio Groppo Stolf

    2004-01-01

    Aneurisma de arco aórtico com fístula aorto-pulmonar aguda é uma afecção rara e, geralmente, diagnosticada postmortem. Poucos relatos de sucesso cirúrgico foram realizados e persiste uma alta taxa de mortalidade. Os autores relatam o caso de um paciente de 78 anos, com comunicação aguda entre aneurisma de arco aórtico e artéria pulmonar com precordialgia, instabilidade hemodinâmica e congestão pulmonar. A operação foi realizada com sucesso, sendo realizada a substituição da porção proximal da...

  12. Influência da temperatura interpasse nas propriedades do aço inoxidável duplex durante a soldagem pelo processo a arco submerso

    Directory of Open Access Journals (Sweden)

    Tatiana Resende Alvarez

    2014-06-01

    Full Text Available Os aços inoxidáveis duplex (AID são materiais que apresentam elevada resistência à corrosão com altos valores de resistência mecânica motivando sua utilização em diversos componentes de processo na indústria offshore. No entanto, existem grandes desafios na soldagem destes materiais em termos de produtividade e qualidade da junta produzida, tendo em vista sua ampla utilização desde componentes de pequenas espessuras, tais como umbilicais, até de grandes espessuras, como tubulações de linhas de injeção de água salgada. No que concerne a tubulações de espessuras pequenas é empregado satisfatoriamente o processo de soldagem Gas Tungsten Arc Welding (GTAW conhecido como TIG. No que diz a respeito a tubulações de paredes espessas foi implementado, recentemente, o processo automático de soldagem por arco submerso (SAW na linha de pré-montagem de tubulações, aumentando consideravelmente a produtividade das juntas produzidas. No entanto, existe uma grande demanda de tempo para a realização de um novo passe de solda, em virtude da máxima temperatura interpasse exigida ser inferior a 150ºC. Portanto, o presente trabalho apresenta os resultados da caracterização e avaliação da resistência à corrosão de uma junta soldada correspondente a uma tubulação de aço inoxidável duplex (AID UNS S31803 de 21,4 mm de espessura de parede soldada pelos processos de soldagem MIG (GMAW na raiz e arco submerso (SAW no enchimento e acabamento, empregando-se temperaturas interpasses entre 150 e 290ºC. Os resultados da caracterização das propriedades mecânicas, composição química e resistência à corrosão em diversas regiões da junta soldada foram comparadas com os obtidos para o metal de base (MB da tubulação, assim como com os valores mínimos exigidos pelas normas de projeto. Deste modo, o presente trabalho permite avaliar a influência da temperatura interpasse nas propriedades da junta em decorrência de um poss

  13. Interrupção do arco aórtico tipo B em uma paciente com síndrome de olho de gato Interrupción del arco aórtico tipo B en una paciente con síndrome del ojo de gato Interrupted aortic arch type B in A patient with cat eye syndrome

    Directory of Open Access Journals (Sweden)

    Sintia Iole Nogueira Belangero

    2009-05-01

    Full Text Available Relatamos um caso de paciente com Síndrome do Olho de Gato (Cat Eye Syndrome-CES e interrupção do arco aórtico tipo B, um achado típico na síndrome da deleção 22q11.2. A análise cromossômica e a técnica de hibridização fluorescente in situ (FISH mostraram um cromossomo marcador isodicêntrico supranumerário com bi-satélite derivado do cromossomo 22. O segmento de 22pter a 22q11.2 no cromossomo supranumerário encontrado em nosso paciente não estava em sobreposição com a região deletada em pacientes com a síndrome da deleção 22q11.2. Entretanto, o achado de interrupção do arco aórtico tipo B não é usual na CES, mas é um defeito cardíaco freqüente na síndrome da deleção 22q11.Informamos un caso de paciente con Síndrome de Ojo de Gato (Cat Eye Syndrome-CES e Interrupción del Arco Aórtico tipo B, un hallazgo típico en el síndrome de la deleción 22q11.2. El análisis cromosómico y la técnica de hibridación in situ fluorescente (FISH mostraron un cromosoma marcador isodicéntrico supernumerario bisatelitado derivado del cromosoma 22. El segmento de 22pter a 22q11.2 en el cromosoma supernumerario encontrado en nuestro paciente no estaba en sobreposición con la región deletada en pacientes con el síndrome de la deleción 22q11.2. Con todo, el hallazgo de interrupción del arco aórtico tipo B no es usual en el CES, sino que es un defecto cardíaco frecuente en el síndrome de deleción 22q11.We report a patient with cat eye syndrome and interrupted aortic arch type B, a typical finding in the 22q11.2 deletion syndrome. Chromosomal analysis and fluorescent in situ hybridization (FISH showed a supernumerary bisatellited isodicentric marker chromosome derived from chromosome 22. The segment from 22pter to 22q11.2 in the supernumerary chromosome found in our patient does not overlap with the region deleted in patients with the 22q11.2 deletion syndrome. However, the finding of an interrupted aortic arch type B is

  14. LIBERDADE, DIVERSIDADE E EXCESSOS SOB AS CORES DO ARCO-ÍRIS: REFLEXÕES SOBRE A RAINBOW FEST JUIZ DE FORA

    Directory of Open Access Journals (Sweden)

    Carlos Eduardo Santos Maia

    2012-12-01

    Full Text Available A liberdade e a diversidade assentadas em excessos são constitutivas das paradas do orgulho gay, ou paradas LGBT, em sentido mais amplo. Destacamos tais aspectos na Rainbow Fest em Juiz de Fora (MG, na qualocorrem, além da parada, palestras, shows com artistas e DJs, exposições, peças teatrais e exibição de filmes com temática LGBT. Durante a semana da Rainbow Fest, notamos que a cidade aparentemente “se veste” com as cores do arco-íris, e espaços regidos pela égide da heteronormatividade rompem com tal padrão e agregam símbolos da cultura LGBT. As reflexões, portanto, abordam a Rainbow Fest juizforana e suas relações com a cidade, examinando a maneira como liberdade e diversidade, permeadas de excessos, demarcam aespacialidade festiva. Metodologicamente, foram consultados material bibliográfico e reportagens de jornais locais, e realizou-se o trabalho de campo com emprego de entrevistas e tomadas de fotografias.

  15. Modelo matemático para el control integrado de la enfermedad por Flexibacter branchiophilus en la trucha arco iris Oncorhynchus mykiss

    Directory of Open Access Journals (Sweden)

    Muñoz Loaiza Aníbal

    2000-12-01

    Full Text Available

    Se presentó un Modelo Matemático que describe la dinámica de la enfermedad de las branquias producida por la bacteria Flexibacter branchiophilus en la trucha arco iris Oncorhynchus mykiss. La interpretación se hace mediante tres ecuaciones diferenciales lineales ordinarias. Se incluye la tasa de mortalidad por la enfermedad, porcentaje de peces infectados que por tratamiento regresan a ser sanos y porcentaje de peces sanos que adquieren la enfermedad. En ausencia o presencia de la enfermedad y variando el tratamiento presenta un comportamiento comparable a las condiciones naturales de los cultivos truchícolas. Con tratamientos de alta efectividad las mortalidades se estabilizan a un nivel mínimo de perdida, locontrario con tratamientos de baja efectividad, los cuales permiten el incremento de la mortalidad a niveles de pérdida de la población casi a la totalidad. Se analiza además, el tiempo de vida medio de la población.

  16. Procesos metalúrgicos de aceros microaleados de alta resistencia 450 EMZ tipo II en la zona afectada térmicamente debido al efecto multipasada en soldaduras por arco sumergido

    Directory of Open Access Journals (Sweden)

    González-Palma, R.

    2006-08-01

    Full Text Available A considerable number of crack tip opening displacement tests in the heat affected zone (HAZ of multipass welds, performed in accordance with standards BS 5762 and EEMUA, are rejected since the crack is not inside the coarse grain region at 0.5 mm from the fusion border, as well as the quantity of the crack length in percentage, that the crack goes through the intercritical region instead of in the grain coarse region as it would correspond. This circumstance make advisable to carry out a metallographic study of the intercritical zone in the HAZ as well as the corresponding tests, in order analyze the intercritical region brittleness reasons. The study is performed on a HSLA 75 mm thick panel 450 EMZ type II, welded under a SAW process with heat input and welded parameters controlled, without any post weld heat treatment

    La falta de cumplimiento de las normas BS 5762 y EEMUA, en considerables casos, invalida los ensayos de mecánica de la fractura, al no encontrarse la grieta en la región de grano grueso a 0,5 mm de la línea de fusión, así como en la cantidad expresada en porcentaje de longitud de grieta que atraviesa la región intercrítica, en lugar de hacerlo en la región de grano grueso. Esta circunstancia, conduce a realizar un estudio metalográfico de dicha región intercrítica de la zona afectada térmicamente así como los correspondientes ensayos, con objeto de analizar las causas de su fragilidad. Este estudio se realiza sobre un panel de chapa de acero microaleado de alto límite elástico, calidad EMZ 450 tipo II, de 75 mm de espesor, soldado bajo un proceso por arco sumergido, con energía calorífica aportada y parámetros de soldadura controlados, sin tratamiento térmico post-soldeo.

  17. Fatores de risco na cirurgia das dissecções da aorta ascendente e arco aórtico Risk factors in surgery for thoracic aortic dissection

    Directory of Open Access Journals (Sweden)

    Luiz Felipe P Moreira

    1987-08-01

    Full Text Available A experiência cirúrgica no tratamento de 72 pacientes consecutivos com dissecções da aorta proximal foi analisada, com o objetivo de identificar os fatores agravantes do risco da operação. Trinta e nove pacientes foram operados na fase aguda e, em 9 pacientes, o comprometimento era restrito à aorta ascendente. O procedimento cirúrgico mais utilizado foi a substituição da aorta ascendente por tubo de Dacron, associada à correção da delaminação, tendo-se atuado no arco aórtico apenas em 5 pacientes. A mortalidade hospitalar foi de 27,7%, assumindo um valor de 43,5% para os pacientes operados na fase aguda e de 9% para os operados cronicamente. Em 45% desses pacientes houve uma relação direta entre a causa do óbito e a existência de complicações no pré-operatório. Foram considerados como determinantes de maior risco cirúrgico: as lesões neurológicas prévias, o tamponamento cardíaco, o choque cardiogênico, a isquemia miocárdica aguda e a disfunção renal. A compressão do tronco braquiocefálico, ou das artérias carótidas pela dissecção, o orifício de rotura primária da íntima no arco aórtico, a isquemia mesentérica e, nos casos operados na fase aguda, a insuficiência valvar aórtica de moderada ou grave repercussão também foram relacionados a um risco operatório mais elevado. Em conclusão, o resultado do tratamento cirúrgico das dissecções da aorta proximal guarda íntima relação com as condições pré-operatórias dos pacientes. A obtenção de melhores resultados com a operação na fase aguda depende, principalmente, do reconhecimento precoce da dissecção e da utilização de terapêutica clínica adequada durante o período de investigação diagnostica.The surgical experience in the treatment of 72 patients with proximal aortic dissections was analized to identify the determinants of high operative risk. Thirty-seven patients were operated upon in the acute stage and the dissection was

  18. Methodology for electrical studies in industrial networks including the study of electric arc; Metodologia para los estudios electricos en redes industriales incluyendo el estudio de arco electrico

    Energy Technology Data Exchange (ETDEWEB)

    Rasgado Casique, Jose Pepe; Silva Farias, Jose Luis [Instituto de Investigaciones Electricas, Cuernavaca, Morelos (Mexico)]. E-mail: jrasgado@iie.org.mx; jlsilva@iie.org.mx

    2010-11-15

    This article presents a methodology for conducting electrical studies in industrial networks. The methodology included the study of arc flash as a very important area of current basic electrical studies, such as power flow, short circuit and coordination. The aim of this study is to determine the Personal Protective Equipment (PPE) and flash protection boundary for personnel working with or near energized equipment, based on the IEEE Std 1584-2004 and NFPA-70E- 2004. Also included are criteria and recommendations to reduce incident energy level (cal/cm{sup 2}). At work we used a distribution network for industrial type test. The studies were carried out using a commercial program for the analysis of electrical networks. [Spanish] En este articulo se presenta una metodologia para llevar a cabo los estudios electricos en redes industriales. En la metodologia se incluye al estudio de arco electrico como un area muy importante de los estudios electricos basicos actuales, como: flujos de potencia, cortocircuito y coordinacion de protecciones. El objetivo de dicho estudio es determinar el Equipo de Proteccion Personal (EPP) apropiado y los limites de proteccion para el personal que opera con o cerca de equipo energizado, con base en las normas IEEE Std. 1584-2004 y la NFPA-70E-2004. Ademas, se incluyen criterios y recomendaciones para disminuir el nivel de energia incidente (cal/cm{sup 2}). En el trabajo se utilizo una red de distribucion tipo industrial de prueba. Los estudios se llevaron a cabo utilizando un programa comercial para el analisis de redes electricas.

  19. Aneurisma do ducto arterioso associado a interrupção do arco aórtico Aneurysm of the arterial duct associated to aortic arch interruption

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    Paulo Zielinsky

    1998-07-01

    Full Text Available É relatado um caso de aneurisma de ducto arterioso, com diagnóstico pré-natal, o que é muito raro, numa gestante com 33 semanas, onde o feto apresentou uma dilatação aneurismática do canal arterial, com calibre uniformemente aumentado, inserindo-se na aorta descendente, associado à interrupção do arco aórtico. A criança nasceu de parto cesáreo e manteve-se estável com o uso de prostaglandina até o 9º dia de vida, quando foi levada à cirurgia, tendo falecido durante o procedimento por falência biventricular. Este é o primeiro relato da associação desta anomalia com outra malformação cardiovascular intra-uterina, mostrando que este achado nem sempre é associado a uma evolução benigna.Aneurysm of the arterial duct is an infrequent finding, which is very rarely detected prenatally. A case of antenatal diagnosis in a pregnant patient (33 weeks is reported. The fetus presented an aneurysmatic dilation of the arterial duct with uniformly enlarged diameter, inserting into the descending aorta, which was interrupted. The neonate was born by cesarean section and was kept on postaglandins till the 9th day of life, when he was sent to surgery. During the surgical procedure, the baby died as a result of biventricular failure. This is the first report of prenatal association of aneurysm of the ducts anteriosus with other cardiovascular malformations and emphasizes that this finding does not always have a benign course.

  20. Producción de aceros al carbono en hornos de arco eléctrico en condiciones de mineral de manganeso.

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    E. E. Navas Medina

    2007-05-01

    Full Text Available El presente trabajo constituye una segunda etapa de investigación relacionada con la producción de acero en hornos de arco eléctrico con revestimiento básico en condiciones de utilización de mineral de manganeso como sustituto del ferro-manganeso. En la investigación se caracteriza el acero producido utilizando el mineral de manganeso en dos variantes tecnológicas diferentes y se determinan parámetros importantes, tales como la estructura del acero obtenido, la influencia de la composición química y la temperatura en la reducción del Mn. Adicionalmente, se determina la composición química de la escoria, su basicidad e influencia en el aprovechamiento del Mn del mineral, así como, lo que significa la sustitución del FeMn en la problemática medioambiental. This present work constitutes the second stage of investigation in relation with the steel production by means of electric arc furnaces in the condition of use of manganese ores as a substitute of the ferromanganese. In the investigation, the steel manufactured is analyzed the manganese ore in two different technological variants and some important parameters are determined such as: the chemical composition's structure of the steel, the influence of temperature in the reduction of Mn. Moreover, an analysis of the chemical composition of the slag and the influence in the environmental is realized.

  1. Treatment of allergic rhinitis is associated with improved attention performance in children: the Allergic Rhinitis Cohort Study for Kids (ARCO-Kids.

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    Dong-Kyu Kim

    Full Text Available BACKGROUND: It has been well known that pediatric allergic rhinitis was associated with poor performance at school due to attention deficit. However, there were no cohort studies for the effect of treatment of allergic rhinitis on attention performance in pediatric population. Thus, the aim of this study was to investigate whether attention performance was improved after treatment in children with allergic rhinitis. METHODS: In this ARCO-Kids (Allergic Rhinitis Cohort Study for Kids, consecutive pediatric patients with rhinitis symptoms underwent a skin prick test and computerized comprehensive attention test. According to the skin prick test results, the children were diagnosed as allergic rhinitis or non- allergic rhinitis. All of the patients were regularly followed up and treated with oral medication or intranasal corticosteroid sprays. The comprehensive attention tests consisted of sustained and divided attention tasks. Each of the tasks was assessed by the attention score which was calculated by the number of omission and commission errors. The comprehension attention test was repeated after 1 year. RESULTS: A total of 797 children with allergic rhinitis and 239 children with non-allergic rhinitis were included. Initially, the attention scores of omission and commission errors on divided attention task were significantly lower in children with allergic rhinitis than in children with non-allergic rhinitis. After 1 year of treatment, children with allergic rhinitis showed improvement in attention: commission error of sustained (95.6±17.0 vs 97.0±16.6 and divided attention task (99.1±15.8 vs 91.8±23.5. Meanwhile, there was no significant difference of attention scores in children with non-allergic rhinitis. CONCLUSIONS: Our study showed that management of allergic rhinitis might be associated with improvement of attention.

  2. Eficiencia térmica en soldadura de la aleación AA6061-T6 por arco eléctrico indirecto modificado y digitalización de señales de intensidad de corriente

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    Ambriz, R. R.

    2009-08-01

    Full Text Available The results of the thermal efficiency on welding by modified indirect electric arc technique (MIEA [1] of the 6061- T6 aluminum alloy are presented. These values are in a range of 90 to 94 %, which depend of the preheating employed. Thermal efficiency was obtained by means of a balance energy which considers the heat input, the amount of melted mass of the welding profiles, and welding parameters during the joining, especially of the arc current data acquisition. Also, some dimensionless parameters were employed in order to determine the approximation grade of the melted pool, the heat affected zone (HAZ, and their corresponding values with the experimental results.

    En el presente trabajo de investigación, se presentan los resultados de la eficiencia térmica en la soldadura de una aleación de aluminio 6061-T6 por medio de la técnica de arco eléctrico indirecto modificado (AEIM [1]. Los valores se encuentran en un rango de 90-94 % dependiendo de la temperatura de precalentamiento y fueron obtenidos a través de un balance térmico que considera a la energía aportada por el arco eléctrico, la cantidad de masa fundida de los perfiles de soldadura obtenidos y las variables operativas en el proceso de unión, poniendo especial atención en los datos recogidos en el proceso de digitalización para la intensidad de corriente del arco eléctrico. También se em - plearon algunos parámetros adimensionales para determinar el grado de aproximación de la porción del baño fundido, el ancho de la zona afectada por el calor (ZAC y sus correspondientes aproximaciones con los resultados experimentales.

  3. “IDENTIFICACIÓN DE LA CORROSIÓN EN LOS ALAMBRES DE NIQUEL TITANIO Y ACERO INOXIDABLE Y LA PRESENCIA DE BACTERIAS ASOCIADAS EN UNA MUESTRA DE ARCOS UTILIZADOS EN PACIENTES DE LA CLÍNICA DE ORTODONCIA”.

    OpenAIRE

    Vargas Morales, Karla Odette

    2012-01-01

    El propósito de este trabajo de investigación fue identificar la presencia de corrosión en alambres de Níquel Titanio y Acero Inoxidable, así como presencia de bacterias asociadas en los mismos colocados en boca durante 4 meses en pacientes de la clínica de ortodoncia de la Universidad Michoacana de San Nicolás Hidalgo. En el tamaño de la muestra del presente estudio se utilizaron diez arcos: cinco de níquel titanio termoactivados y cinco de acero inoxidable. Los siguientes ...

  4. Encuesta serológica para Hidatidosis humana por la prueba de doble difusión Arco 5 en la provincia de Chupaca, Junín, Perú

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    Pilar Alva

    2008-01-01

    Full Text Available Para determinar la frecuencia de hidatidosis en escolares de la provincia de Chupaca, departamento de Junín, en setiembre del 2000, se tomó 160 muestras de sangre de escolares aparentemente sanos, de 12 a 19 años, de los cuales 89 (55,6% fueron varones. Los sueros fueron evaluados por la prueba de doble difusión arco 5 (DD5. Se detectó 11 (6,8% casos seropositivos de hidatidosis, cinco fueron mujeres. La hidatidosis aún constituye un problema de salud importante en la provincia de Chupaca, donde la crianza de ovinos está muy difundida.

  5. Encuesta serológica para Hidatidosis humana por la prueba de doble difusión Arco 5 en la provincia de Chupaca, Junín, Perú

    OpenAIRE

    Pilar Alva; William Cornejo; Carlos Sevilla; Alina Huiza

    2008-01-01

    Para determinar la frecuencia de hidatidosis en escolares de la provincia de Chupaca, departamento de Junín, en setiembre del 2000, se tomó 160 muestras de sangre de escolares aparentemente sanos, de 12 a 19 años, de los cuales 89 (55,6%) fueron varones. Los sueros fueron evaluados por la prueba de doble difusión arco 5 (DD5). Se detectó 11 (6,8%) casos seropositivos de hidatidosis, cinco fueron mujeres. La hidatidosis aún constituye un problema de salud importante en la provincia de Chupaca,...

  6. Sistema embarcado para monitoramento sem fio de sinais em soldagem a arco elétrico com abordagem tecnológica Embedded system for wireless signal monitoring during arc welding with technological approach

    OpenAIRE

    Marcus Vinícius Ribeiro Machado; Carolina Pimenta Mota; Roberto Mendes Finzi Neto; Louriel Oliveira Vilarinho

    2012-01-01

    Industrialmente, o processo de soldagem a arco é o mais importante na produção e reparo de equipamentos, e sendo um processo especial de fabricação, que não pode ser completamente inspecionado contra imperfeições somente após sua finalização, o monitoramento da produção se faz necessário. Este monitoramento é tecnologicamente requerido pelas normas ISO 3834:2005 e ISO 17662:2005, que dizem que o fabricante deve adotar medidas para garantir a qualidade necessária, além de especificarem os dado...

  7. Utilización de las escorias de los hornos de arco eléctrico y de cuchara como materiales de construcción. // Use of slags from ladle and electric arc furnaces as construction materials.

    OpenAIRE

    R. Zaragoza Valdés; A. Nassur Bogachkov; A. A. Concepción Gómez; D. Tápanes Robau

    2001-01-01

    La necesidad que tiene la humanidad de que las producciones sean cada día mas limpias, así como la que tiene el país del aumento dela rentabilidad de las empresas, hace necesario el estudio del uso de las escorias que se obtienen en la producción de acero, principalresidual de este tipo de producción. En el trabajo se estudia la utilización de la escoria del Horno de Arco Eléctrico (HAE) comomaterial de relleno en la confección de bloques de hormigón para la construcción de edificaciones, sus...

  8. Efeitos do tratamento da Classe II divisão 1 em pacientes dolicofaciais tratados segundo a Terapia Bioprogressiva (AEB cervical e arco base inferior), com ênfase no controle vertical Treatment effects on Class II division 1 high angle patients treated according to the Bioprogressive therapy (cervical headgear and lower utility arch), with emphasis on vertical control

    OpenAIRE

    Viviane Santini Tamburús; João Sarmento Pereira Neto; Vânia Célia Vieira de Siqueira; Weber Luiz Tamburús

    2011-01-01

    OBJETIVO: o presente estudo investigou o controle vertical e os efeitos do tratamento ortodôntico em pacientes dolicofaciais, empregando o AEB cervical e o arco base inferior. MÉTODOS: foi realizada a avaliação cefalométrica de 26 pacientes dolicofaciais com Classe II, divisão 1, idade média de 114 meses. O tratamento ortodôntico envolveu a utilização do AEB cervical na arcada superior e arco base na arcada inferior, até a obtenção da chave de oclusão normal dos molares, e finalizado segundo ...

  9. Desarrollo de un modelo matemático de diferencias finitas para el análisis del campo de temperaturas en la soldadura por arco de chapas finas de acero inoxidable

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    Miguel, V.

    2010-12-01

    Full Text Available This work develops a finite difference method to evaluate the temperature field in the heat affected zone in butt welding applied to AISI 304 stainless steel thin sheet by GTAWprocess. A computer program has been developed and implemented by Visual Basic for Applications (VBA in MS-Excel spreadsheet. The results that are obtained using the numerical application foresee the thermal behaviour of arc welding processes. An experimental methodology has been developed to validate the mathematical model that allows to measure the temperature in several points close to the weld bead. The methodology is applied to a stainless steel sheet with a thickness lower than 3 mm, although may be used for other steels and welding processes as MIG/MAG and SMAW. The data which has been obtained from the experimental procedure have been used to validate the results that have been calculated by the finite differences numerical method. The mathematical model adjustment has been carried out taking into account the experimental results. The differences found between the experimental and theoretical approaches are due to the convection and radiation heat losses, which have not been considered in the simulation model.With this simple model, the designer will be able to calculate the thermal cycles that take place in the process as well as to predict the temperature field in the proximity of the weld bead.

    En este trabajo se desarrolla un método de diferencias finitas para calcular el campo de temperaturas en la zona afectada por el calor en la soldadura de dos chapas de acero inoxidable AISI 304, soldadas mediante el procedimiento GTAW. Se ha desarrollado un programa informático implementado en libros de cálculo MS-Excel con Visual Basic para Aplicaciones (VBA. Los experimentos modelizados a través de la aplicación numérica predicen el comportamiento térmico de un procedimiento de soldadura. Para la validación del modelo matemático se ha desarrollado un

  10. ALGORITMOS PARA O PROBLEMA NÃO CAPACITADO DE FLUXOS COM CUSTOS FIXOS NOS ARCOS: UMA COMPARAÇÃO ESTATÍSTICA

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    Frederico R.B. Cruz

    2001-07-01

    Full Text Available Este trabalho tem como propósito a apresentação de resultados de uma comparação empírica entre algoritmos, sendo este um dos assuntos mais recorrentes na área de desenvolvimento de algoritmos. Os algoritmos sob estudo são para resolver um problema de otimização em redes, importante pelas suas aplicações potenciais em sistemas de telefonia e transporte, o problema não capacitado de fluxos com custos fixos nos arcos (NCFCF, uma generalização do clássico problema de Steiner em grafos. Para tal, são utilizadas ferramentas estatísticas conhecidas tais como planejamento de experimentos, análise de variância e intervalos de confiança, mas não comumente empregadas neste tipo de estudo. O problema NCFCF é apresentado em uma modelagem de programação matemática inteira mista, baseada na qual os algoritmos sob consideração são apresentados. Uma descrição do planejamento de experimentos adequado a este tipo de estudo é apresentada e é ilustrado o uso da técnica estatística baseado em cuja análise foi possível classificar os algoritmos sob consideração.This paper is concerned about empirical comparisons of algorithms, one of the most recurrent issues in the field of design of algorithms. The problem under consideration is the uncapacitated fixed-charge network flow (UFCNF problem, a generalization of the classic Steiner problem in graphs. The UFCNF is very important in the practical point of view because of its potential applications for telecommunication and transportation system design. In order to compare the algorithms for the UFCNF problem, we make use of well known and well established statistical tools namely the design of experiments, analysis of variance, and confidence intervals, but rarely applied in such studies. A mixed-integer mathematical programming formulation is presented for the UFCNF problem and the design of experiments suitable for the empirical study is detailed. Finally, the statistical analysis

  11. Diseño y ejecución de un refuerzo para la deconstrucción parcial de una nave con cubierta prefabricada a base de arcos atirantados de 38 metros de luz libre

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    Serrá, I.

    2006-06-01

    Full Text Available This paper presents the design and the execution of a structural strengthening induced by the partial deconstruction of the naves that contain the East bus garage of the Metropolitan Transport of Barcelona. The structure of the roof of the naves consisted of tied precast concrete arches spanning 38 m. The initial state of the structural system of the building and its specific conditions are described to establish the criteria to be considered in the design and execution process of the strengthening. Then, the design and execution of the strengthening needed to guarantee the stability of the roof structure and the main aspects related to the construction process are described. This intervention had a temporary character because the whole building should be deconstructed after a year term. So that, a strengthening that took advantage of the actual capacity of the existing structure was designed. It consisted of adding steel members which, interacting with the existing structure, configured a new structural system against horizontal actions. It was not necessary to strengthen any existing members neither to build new foundation elements.El presente artículo tiene por objeto la descripción del diseño y la ejecución de un refuerzo estructural motivado por la deconstrucción parcial de las naves que albergaban las cocheras de Levante de los Transportes Metropolitanos de Barcelona. La cubierta de la nave es prefabricada a base de arcos atirantados de 38 m de luz libre. Se presenta el sistema constructivo y estructural del edificio en su estado inicial y se analizan los condicionantes específicos del caso estableciendo, a partir de todo ello, los criterios considerados para el diseño del refuerzo así como para el proceso de ejecución de la obra. Se describe el refuerzo diseñado, necesario para asegurar la estabilidad de la construcción durante y después de la deconstrucción, así como los aspectos más destacables del proceso de ejecuci

  12. Quantitative T2 Map of Cartilage in Different ARCO Stage of Femoral Head Necrosis%磁共振T2 map成像对不同ARCO分期股骨头软骨变性的评估价值

    Institute of Scientific and Technical Information of China (English)

    冷晓明; 姜胜攀; 徐玲; 赵曼; 韩晓蕊

    2016-01-01

    Objective To investigate the values of quantitative parameters of T2 map of cartilage in different ARCO stage of the femoral head necrosis.Methods Different Arco stage avascular necrosis of the femoral head (ARCO I, ARCOII, ARCOIII period) and normal femoral head with 20 cases in each were enrolled in this study from age 20 to50, all case of illness all MRI check. Data quantitative calculation of each period of femoral head necrosis and normal cartilage of femoral head T2 map value. All the selected necrosis and normal subjects were excluded on the basis of observation of disease osteoporosis and other effects.Results Along with the progress of the disease, avascular necrosis of the femoral head ARCO stage is high, the more serious illness, cartilage T2 map value higher, cartilage damage and also more obvious.The LSD test analysis showed that between avascular necrosis of the femoral head ARCOIII period cartilage and normal femoral head, ARCOI, ARCOII period cartilage T2 map values had significant difference, P values less than 0.05.Conclusion Normal T2 map values of the cartilage of the femoral head can be defined as about (49.39±8.158), the clinical possibility can be the interval value as the reference standard, as with the progress of the ARCO I-III, the extent of the femoral head cartilage damage degeneration has a gradually increasing trend.%目的:测量正常及不同ARCO分期条件下坏死股骨头软骨T2 map值的变化,评估其临床应用价值。方法搜集不同ARCO分期坏死股骨头(ARCOI期、ARCOII期、ARCOIII期)及正常股骨头各20例,年龄20-50岁,所有病例均行MRI检查。测量各期坏死及正常股骨头软骨的T2 map值的定量学数据。所有选取坏死及正常研究对象均排除骨质疏松及其他影响观察的基础性疾病。结果随着病情进展,坏死股骨头ARCO分期越高,软骨T2 map值越高,软骨的损害也就越明显;经LSD检验分析提示坏死股骨头ARCOIII期软骨

  13. Desenvolvimento e comparação de um método de construção de arcos ortodônticos individualizados com um método tradicional de escolha de arcos ortodônticos pré-fabricados Development and comparison of a individualized orthodontic arches construction method and a traditional method for choosing pre-manufactured orthodontic arches

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    Antonio José Borin Neto

    2009-04-01

    Full Text Available INTRODUÇÃO: a existência de pacientes com arcos dentários e anatomias diferentes dos diagramas de arcos ortodônticos preestabelecidos justifica este trabalho. OBJETIVO: foi proposto mostrar um método de construção de arcos ortodônticos que respeitasse a anatomia individual de cada paciente e que fosse construído sem a necessidade de diagramas impressos pré-desenhados. MÉTODOS: em vinte modelos inferiores de gesso, foram colados, no centro da coroa clínica dos seus dentes, braquetes e tubos. Com o auxílio de um paquímetro digital associado a um aparelho que posicionou os modelos com o plano oclusal paralelo ao solo, foi possível medir a distância da ponta de cúspide e meio da face incisal de cada dente até o fundo da canaleta do respectivo braquete e tubo colado. De posse dessas medidas, foram realizadas impressões das cúspides dentárias dos modelos em uma lâmina de cera 7 e, a partir dessas cúspides, pontuou-se a cera usando a distância obtida (entre a ponta de cúspide/meio da incisal dos dentes e a canaleta do braquete/entrada do tubo. Esses novos pontos serviram de referência para a construção dos arcos ortodônticos individualizados. RESULTADOS E CONCLUSÃO: esse método de construção foi denominado "arcograma", o qual foi comparado com um método pré-conformado de diagramação ("Tru-arch", sendo considerado melhor que esse no tocante à adaptação à anatomia individual do arco.INTRODUCTION: The existence of exceptional anatomic dental arches justifies this work. AIM: It was proposed to show a orthodontic arches construction method that follow the individual anatomy of each patient, developed without any previous constructed diagram. METHODS: Braces or molar tubes were bonded on 20 inferior natural cast models. With the aid of a digital paquimeter associated to an apparatus that positioned the occlusal planes parallel to the floor, the distance between the cuspid tip and the center of the slot of the brace

  14. No arco da luz obscura

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    Claude LeManchec

    2015-02-01

    Full Text Available ResumoEm Kafka, criação literária, escrita epistolar, anotações íntimas e escritos gnômicos estão dispostos sobre uma tela que comporta escritos como a Carta ao pai, orientada pela dupla compreensão da singularidade de seu percurso na sociedade e de sua vocação de escritor. A escrita nasce do vazio existencial e a ele reconduz. Este ensaio se propõe a refletir sobre os movimentos da escrita de Kafka em sua dimensão ética.Palavras-chave : criação literária ; escrita epistolar ; ética.Résumé Chez Kafka, création littéraire, écriture épistolaire, notations intimes et écrits gnomiques se positionnent sur une immense toile qui enserre des écrits comme la Lettre au  père orientée par la double compréhension de la singularité de son parcours dans la société et de sa vocation d’écrivain. L’écriture naît du vécu existentiel et elle y reconduit. Cet essai se propose à réfléchir sur les  mouvements de l’écriture de Kafka dans sa dimension éthique.Mots-clés: création littéraire; écriture épistolaire; éthique

  15. Petrología del magmatismo de arco pre-deformacional en el cordón de El Realito y la zona norte del plutón La Escalerilla. Sierra de San Luis

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    N. Brogioni

    2005-09-01

    Full Text Available Los granitoides de arco pre-deformacionales de San Luis son asignados al Cámbrico tardío-Ordovícico temprano, y conforman una serie de extensos afloramientos en el cordón de El Realito y en la zona norte del plutón La Escalerilla. El magmatismo es calcoalcalino de alto K y se aloja en metasedimentitas regionales de grado bajo a medio. Está representado por una secuencia de arco más antigua, constituida por granodioritas, tonalitas y dioritas con Pl+Bt+Ep±Hbl±Kf, metaluminosas, portadoras de enclaves gábricos y monzodioríticos, correlacionable con la secuencia metaluminosa de las sierras de Chepes y Los Llanos (La Rioja. La serie más joven es colisional, monzogranítica, leucocrática y peraluminosa, con Kf+Pl+Ms±Bt±Grt, de características afines a las de los monzogranitos y leucogranitos de dos micas, y una tendencia evolutiva propia de los granitoides peraluminosos félsicos. La serie monzogranítica no parece resultar del fraccionamiento extremo de la secuencia metaluminosa sino que derivaría de la fusión por deshidratación de metapelitas muscovíticas y grauvacas, aunque algunas particularidades geoquímicas de La Escalerilla, entre ellas la abundancia y evolución de las HREE, podrían atribuirse a diferencias litológicas en la zona de proveniencia del fundido. Los fundidos se distinguen claramente, en ambos casos, de aquéllos que dieron origen a las leucogranodioritas sincinemáticas débilmente peraluminosas que afloran en el complejo basamento oriental de la sierra, portadoras de la misma asociación mineral. La deformación famatiniana modificó las fábricas y en menor proporción el quimismo de ambas secuencias, en particular los términos más básicos de la serie de arco, incrementando su peraluminosidad y la dispersión de las tendencias evolutivas.

  16. AVALIAÇÃO DA VULNERABILIDADE FÍSICA DA ORLA COSTEIRA EM NÍVEL LOCAL, TOMANDO COMO EXEMPLO O ARCO PRAIAL ENTRE RIO DAS OSTRAS E O CABO BÚZIOS/RJ

    Directory of Open Access Journals (Sweden)

    Dieter Muehe

    2011-12-01

    Full Text Available Processos erosivos representam um risco para as áreas urbanizadas próximas à linha de costa. Com a finalidade de avaliar o grau de vulnerabilidade à erosão costeira, considerando um cenário de elevação do nível do mar para os próximos 50 anos (até 2060, um conjunto de técnicas, consistindo de comparação de fotos aéreas, levantamentos batimétricos e de perfis de praia, modelagem computacional de refração de ondas, caracterização morfodinâmica da praia, análise granulométrica da praia e antepraia e determinação do perfil de equilíbrio, foi aplicado num arco praial localizado entre a cidade de Rio das Ostras e a Ponta do Pai Vitório, no litoral do Estado do Rio de Janeiro. O arco praial é segmentado em dois semiarcos devido à presença de um promontório rochoso e a desembocadura de um rio junto à cidade de Barra de São João, sendo caracterizado por variados níveis de urbanização e distintos graus de exposição às ondas e ambientes morfodinamicamente diferenciados. Os resultados indicaram um desequilíbrio morfodinâmico em grande parte do arco praial e da antepraia entre Rio das Ostras e Barra de São João, justamente onde a urbanização se encontra mais próxima da praia. Uma projeção de recuo da costa para os próximos 50 anos, considerando a atual taxa de erosão e de elevação do nível do mar e mais a elevação do nível do mar prevista em função do incremento da taxa atual por efeito climático indicou recuos potenciais da ordem de 10 a 30m, o que representa um risco potencial para muitas das construções da orla costeira.

  17. O arco ocupacional saúde nas políticas de educação profissional The health occupational arch in the professional education policies

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    Neise Deluiz

    2013-08-01

    Full Text Available Este artigo tem como objetivo analisar as expectativas dos alunos em relação aos cursos de qualificação profissional do arco ocupacional saúde do Projovem Trabalhador no Rio de Janeiro, as concepções e estratégias pedagógicas utilizadas nos cursos e as mudanças ocorridas em sua situação social nas dimensões educacional, econômica, psicossocial e político-social. Trata-se de pesquisa qualitativa que utilizou grupos focais e entrevistas com os 58 alunos dos cursos. Na dimensão educacional, a qualificação profissional recebida foi insuficiente e não preparou os alunos para enfrentar os desafios do mercado de trabalho. A maioria continua buscando cursos como forma de aumentar as chances de trabalho. Na dimensão econômica, a maior parte dos jovens permaneceu desempregada, e na dimensão psicossocial observou-se referência às questões relativas à subjetividade, à autoestima, melhor comunicação e sociabilidade. Quanto à dimensão político-social, o maior ganho dos alunos foi na compreensão dos seus direitos como cidadãos, mas esta não os levou a atuar nos espaços da sociedade civil, como sindicatos e movimentos sociais. Conclui-se que as percepções dos alunos e os sentidos que atribuem ao Programa refletem as contradições da política, indicando que os jovens não são somente receptores passivos, mas sujeitos de direitos e protagonistas que reivindicam uma formação que atenda aos seus interesses.This article aims to analyze the students' expectations with regard to the vocational training courses provided under the "Projovem Trabalhador" occupational health arch, in Rio de Janeiro, the educational concepts and strategies used in the courses, and the changes that took place in their social situation in the educational, economic, psychosocial and socio-political dimensions. This is a qualitative study that used focus groups and interviews with 58 students of the courses. In the educational dimension, vocational

  18. Avaliação do espaço adicional requerido no perímetro do arco inferior para o nivelamento da curva de Spee Assessment of the additional lower arch perimeter needed for leveling the curve of Spee

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    Marcio José da Silva Campos

    2009-08-01

    Full Text Available OBJETIVO: determinar o perímetro de arco adicional necessário para o nivelamento da curva de Spee através de uma técnica laboratorial em modelos de estudo. MÉTODOS: foram utilizados 70 modelos inferiores nos quais se mediu a profundidade da curva de Spee e o perímetro do arco (de segundo molar a segundo molar. Nos mesmos modelos, após a simulação do nivelamento da curva de Spee, o perímetro de arco foi novamente avaliado, mantendo sua forma e comprimento. RESULTADOS: foi confirmada a correlação entre a profundidade da curva de Spee e o perímetro de arco adicional, sendo deduzida a fórmula [Paa = 0,21 CSmax - 0,04]. CONCLUSÃO: a técnica proposta permitiu, através da avaliação do perímetro de arco com curva de Spee nivelada, a determinação do espaço disponível para o alinhamento dentário.AIM: To determine the additional arch perimeter needed for leveling the curve of Spee by means of a laboratory technique using dental casts. METHODS: Seventy lower dental models were used for measuring the depth of the curve of Spee and assessing the arch perimeter from second molar to second molar. In these dental casts, after simulation of leveling the curve of Spee, arch perimeter was reevaluated, after maintaining its form and length. RESULTS: The correlation between the depth of the curve of Spee and the additional arch perimeter was ratified, as can be shown by the formula [Paa = 0,21 CSmax - 0,04]. CONCLUSION: The proposed technique allowed, through the assessment of the arch perimeter with the leveled curve of Spee, the determination of the space available for tooth alignment.

  19. Apropiaciones de la modernidad cultural. Las representaciones de la nación argentina y colombiana desde las agrupaciones musicales “La Columna de Fuego” y “Arco Iris”

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    Hernando Cepeda Sánchez

    2013-01-01

    Full Text Available Este artículo presenta dos representaciones de nación creadas en los albores de la década de los años setenta. Los protagonistas son los integrantes de las agrupaciones de música juvenil “Arco Iris” y “La Columna de Fuego”, surgidas respectivamente en Argentina y Colombia. Ambas propuestas son analizadas dentro del marco de los estudios que se ocupan del sentido de la modernidad en relación con la creación de los imaginarios nacionales. Como premisa básica se comprende que la nacionalidad proviene de necesidades particulares, las cuales en este caso, radican en la búsqueda por establecer una tradición histórica que legitime la apropiación de la modernidad, sin desconocer los valores culturales de los países de origen.

  20. Culicidae (Diptera del arco sur de la Laguna de Mar Chiquita (Córdoba, Argentina y su importancia sanitaria Culicidae (Diptera from the southern coast of Mar Chiquita Lake (Cordoba, Argentina and their sanitary importance

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    Francisco Ludueña Almeida

    2004-12-01

    Full Text Available Se amplía la lista de veintidos especies de Culicidae citadas para el arco sur de la Laguna de Mar Chiquita a veintiocho. Aedeomyia squamipennis (Lynch Arribalzaga , Culex acharistus Root, Culex chidesteri Dyar, Haemagogus spegazzinii Brèthes, Mansonia titillans (Walker y Psorophora holmbergi Lynch Arribalzaga se citan por primera vez para la región. Se sintetizan los antecedentes relacionados con la importancia sanitaria de los culícidos de la zona.The list of twenty-two species of Culicidae from the southern coast of Mar Chiquita Lake is extended to twenty-eight. Aedeomyia squamipennis (Lynch Arribalzaga , Culex acharistus Root, Culex chidesteri Dyar, Haemagogus spegazzinii Brèthes , Mansonia titillans (Walker and Psorophora holmbergi Lynch Arribalzaga are listed for the first time for the region. The available information on sanitary importance of the culicids of the area is summarized.

  1. Optimización de los Parámetros de Soldadura por Arco Sumergido en Acero HSLA: una Aplicación para Manufactura de Tuberías de Conducción de Hidrocarburos

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    Patricia Sheilla Costa

    2015-12-01

    Full Text Available Resumen El acero HSLA (High Strength Low Alloy API 5L X70 es utilizado para fabricación de tuberías para transporte de hidrocarburos. La construcción de tuberías de este material involucra alta cantidad de soldadura, donde los parámetros empleados influyen directamente en las estructuras metalúrgicas y en las propiedades mecánicas del mismo cuando soldado. Así, para estudiar el impacto de los parámetros de soldadura por arco sumergido en la resistencia mecánica y dureza de la Zona Afectada por el Calor (ZAC, fue llevado a cabo un diseño central compuesto que totalizó 17 pruebas. Las variables de entrada fueron corriente, voltaje y velocidad de avance; como variables de salida se consideró resistencia a la tensión y dureza Vickers de la ZAC. Para tal estudio fue utilizado el proceso de soldadura por arco sumergido, pruebas de tensión y pruebas de dureza Vickers. Se utilizó la metodología de superficie de respuesta para el modelado y la optimización fue realizada utilizando algoritmos genéticos y la gráfica de frente de Pareto. Fueron obtenidas 16 combinaciones de parámetros con la optimización, de las cuales fue escogida una para validar los modelos. Con los resultados fue posible establecer modelos matemáticos empíricos satisfactorios para las variables de respuesta.

  2. Ignimbritas riolíticas neoproterozoicas en la Sierra Norte de Córdoba: ¿evidencia de un arco magmático temprano en el ciclo Pampeano?

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    EJ Llambías

    2003-12-01

    Full Text Available La Sierra Norte forma parte de las Sierras Pampeanas de Córdoba por lo cual las principales intrusiones graníticas y el metamorfismo están relacionadas al ciclo orogénico Pampeano. La mayor diferencia con las Sierras de Córdoba es que en Sierra Norte el grado metamórfico es bajo y las intrusiones son superficiales. La Sierra Norte está compuesta por pequeños afloramientos de metasedimentitas, plutones de granodiorita y granito y cuerpos subvolcánicos relacionados a los últimos estadios del batolito. En este trabajo describimos mantos de ignimbritas intercalados en los metaconglomerados de la Formación La Lidia. Las ignimbritas están moderadamente soldadas y está compuestas por aproximadamente 15 % de porfiroclastos de cuarzo, feldespato potásico y plagioclasa totalmente alterada. La pasta consiste de trizas vítreas devitrificadas. La edad U/Pb convencional en circones dio 584+22/-14 Ma y es interpretada como la edad de cristalización. Tanto las ignimbritas como la roca de caja han sido afectadas por un metamorfismo en facies prehnita-pumpellita que alteró la plagioclasa en zoicita, sericita y pumpellita. Las ignimbritas silícicas neoproterozoicas, conjuntamente con el batolito calcoalcalino que le suceden sugiere la existencia de un arco magmático asociado al margen continental activo de Gondwana. Este arco habría estado activo desde el Neoproterozoico hasta el Cámbrico, con una duración de más de 60 Ma. La correlación de las metasedimentitas y volcanitas neoproterozoicas con la Formación Puncoviscana es posible.

  3. Avaliação da inclinação dentoalveolar e dimensões do arco superior em mordidas cruzadas posteriores tratadas com aparelho expansor removível e fixo Evaluation of the dentoalveolar inclination and upper arch dimensions in posterior cross bite treated with removable and fixed expander appliances

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    Ary dos Santos-Pinto

    2006-08-01

    Full Text Available OBJETIVO: avaliar as diferenças produzidas nas dimensões e forma de arco pelos tratamentos com aparelho expansor fixo tipo Hyrax e aparelho expansor removível tipo Placa de Hawley com parafuso expansor palatino centralizado. MATERIAL E MÉTODOS: foram selecionados modelos de estudo iniciais e finais de 31 crianças portadoras de mordida cruzada posterior, de ambos os gêneros, de origem étnica diversa e na fase da dentadura mista, tratadas nos cursos de Graduação e Pós-Graduação em Ortodontia do Departamento de Clínica Infantil da Faculdade de Odontologia de Araraquara - UNESP. Destas crianças, 15 foram tratadas com uso do aparelho expansor fixo tipo Hyrax e as demais 16 crianças foram tratados com expansão rápida da maxila efetuada com o aparelho expansor fixo. Foram realizadas medidas das distâncias intercaninos e intermolares, da inclinação do processo alveolar e inclinação dentária nas imagens escaneadas do arco superior e do contorno do palato, obtido com auxílio de um template ajustável e do programa de análises Radiocef Studio. RESULTADOS E CONCLUSÕES: os resultados indicam uma mudança significante nas distâncias intercaninos e intermolares em ambos os grupos e uma inclinação dentária e do processo alveolar para vestibular significante no grupo tratado com o aparelho expansor fixo. A expansão conseguida pelo aparelho expansor fixo foi aproximadamente o dobro da promovida pelo aparelho expansor removível.AIM: to evaluate the differences of arch dimension and arch form obtained by treating the posterior cross-bite with the fixed expander appliance Hyrax and with the removable expander type Hawley plate with centralized screw. METHODS: initial and final study models of thirty-one children in the mixed dentition phase, of both genders and same ethnic origin treated in the Araraquara School of Dentistry, UNESP, São Paulo, Brazil - undergraduate and graduation Orthodontic courses. Fifteen children were treated

  4. Viabilidade da equação do arco da parábola no cálculo do perímetro molhado na irrigação por sulco Feasibility of the parabolic arc equation for calculating the wetted perimeter in furrow irrigation

    OpenAIRE

    Roberto V. Pordeus; Francisco de Souza; Carlos A. V. de Azevedo

    2001-01-01

    Neste trabalho, estudou-se a viabilidade da equação do arco da parábola no cálculo do perímetro molhado, para fins de avaliação do desempenho da irrigação por sulco. Os valores do perímetro molhado estimados pela equação proposta, foram avaliados mediante comparação com resultados obtidos a partir de outras equações apresentadas na literatura e com dados de campo. Os resultados mostraram que a equação do arco da parábola é viável no cálculo do perímetro molhado, na irrigação por sulco.For pur...

  5. Influência dos Níveis das Correntes, Ângulo de Inclinação da Tocha e Distância entre a Tocha e a Peça sobre a Geometria do Cordão de Solda Usando “Plasma-MIG” com Arcos Concêntricos

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    André Alves de Resende

    2015-12-01

    Full Text Available Resumo Um adequado controle da poça fundida é de fundamental importância para obtenção de soldas em conformidade geométrica com as especificações de projeto. O processo “Plasma-MIG” com Arcos Concêntricos tem sido apresentado como uma alternativa inovadora neste sentido. Desta forma, este trabalho objetivou ampliar os estudos relacionados ao balanço das correntes entre o eletrodo consumível e o arco externo, ao ângulo de inclinação da tocha e à distância entre a tocha e a peça sobre a performance do processo. Soldagens de simples deposição sobre chapa foram executadas na posição plana, visando identificar individualmente o efeito de cada das variáveis sobre a geometria do cordão. A corrente no arco externo foi avaliada em quatro níveis e os efeitos dos demais parâmetros foram avaliados em três níveis. Foi observado que incrementos na corrente do arco externo favorece o aumento da largura, penetração e área fundida e redução do reforço. O aumento da distância da tocha até a peça fez o reforço aumentar e as larguras, penetração e área fundida diminuíram. Quanto ao ângulo de ataque da tocha, a largura e área fundida aumentaram e o reforço e penetração diminuíram quando se muda do modo puxando para empurrando.

  6. Revisión estratigráfica de Punta Coyote (Baja California Sur, México e implicaciones para el volcanismo de la Sierra Madre Occidental y el arco Comondú

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    Puy-Alquiza, M. J.

    2010-12-01

    los pulsos volcánicos de la UIGC en Punta Coyote. De acuerdo al análisis realizado, el área estudiada formó parte de la cuenca de arco delantero al oeste del arco volcánico de la Sierra Madre Occidental durante el Oligoceno inferior al Mioceno inferior. El ambiente sedimentario de la unidad inferior del Grupo Comondú evolucionó inicialmente como un ambiente fluvial trenzado progradando a un ambiente de abanico aluvial donde llegaron a depositarse tres unidades tobáceas: toba los Azabaches (30.6 ± 0.4 Ma, toba La Capilla y toba El Oro (22.0 ± 0.4 Ma. La sucesión estudiada aporta nueva información en relación a la evolución estratigráfica del arco volcánico Oligoceno-Mioceno en la Península de Baja California y su correlación con los depósitos del Supergrupo Volcánico Superior de la Sierra Madre Occidental al noroeste de México.

  7. Geomorfología de la región de los lagos Moquehue y Aluminé: consideraciones acerca de las propuestas Calderas Meseta del Arco y Nacimientos del Aluminé (Neuquén

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    Emilio F. González Díaz

    2010-05-01

    Full Text Available Se exponen elementos de juicio geomórficos y estructurales, que avalan la morfogénesis glaciaria de la depresión en artesa que aloja la cuenca lacustre Moquehue-Aluminé, ubicada en la cordillera neuquina (38°30´S, adyacente al límite internacional. Trabajos anteriores distinguen en la región dos calderas de un gran complejo volcánico plio-cuaternario, situado al este del frente volcánico actual e integrado por nueve depresiones caldéricas y cuerpos dómicos asociados. En el área de estudio sólo la caldera de Pino Hachado tiene la validez necesaria, cuestionándose el reconocimiento de las calderas denominadas Nacimientos del Aluminé y Meseta del Arco, al tiempo que se avala el origen erosivo de las abruptas escarpas orientales que marginan el plateau de Lonco Luan-Meseta del Arco, las que fueran interpretadas como márgenes de las sugeridas calderas. Se analizan las fases o tipología del englazamiento pleistoceno local, su extensión, las direcciones de los principales movimientos de su flujo y su más que probable aporte de hielo por difluencia, a un contemporáneo englazamiento en Chile (laguna Icalma. Se describen aspectos de la morfogenia volcánica cenozoica y otros más locales de la remoción en masa y el proceso eólico. Se incorporan breves comentarios acerca de un propuesto drenaje atlántico de un río Bío Bío preglaciario y se cuestiona aquellos antecedentes que avalan la extensión en la región de la fosa Bío Bío-Aluminé y la presencia de las citadas calderas. Una serie de perfiles esquemáticos topográfico-geológicos contribuyen a dicho cuestionamiento.

  8. Impacto da desidratação na geração de força de atletas de arco e flecha durante competição Indoor e Outdoor

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    Vanessa de Brito Reis

    2010-12-01

    Full Text Available INTRODUÇÃO: O arco e flecha é um esporte estático que requer força e resistência da parte superior do corpo, sendo que a habilidade do arqueiro é definida pela capacidade de atirar a flecha no alvo em um intervalo de tempo com precisão. A contração muscular gerada durante a execução do gesto esportivo propicia o aumento da temperatura corporal, da oxidação de glicose e da sudorese, podendo esta ser potencializada pelas condições climáticas às quais o atleta é exposto. Todos estes fatores alteram a percepção de esforço e a própria geração de força, impondo um estresse negativo à performance. OBJETIVOS: Avaliar e relacionar o estado de hidratação de atletas de arco e flecha com alterações fisiológicas e de força intervenientes no rendimento competitivo. MÉTODOS: Participaram 11 arqueiros em duas competições distintas (indoor e outdoor. Foram mensurados parâmetros relacionados ao estado de hidratação, glicemia, percepção de esforço subjetivo e alteração na força de preensão palmar. RESULTADOS: Os atletas analisados apresentaram alterações significativas nos parâmetros relacionados ao estado hídrico em diferentes dias, provavelmente relacionadas às condições climáticas adversas na competição outdoor (34ºC e 60% URA em relação à competição indoor (22ºC e 90% URA. O mesmo não foi observado para a glicemia. CONCLUSÃO: Este trabalho é o primeiro a comprovar a relação direta entre fatores climáticos e de rendimento em arqueiros de alto nível durante evento competitivo, assim como a evidenciar quais métodos não invasivos seriam os mais indicados para a avaliação do impacto destas alterações.

  9. Comportamiento del tiempo de duración, la frecuencia de los cortocircuitos y la conductividad eléctrica durante el reencendido del arco en la soldadura SMAW (AC con electrodos E6013 Behavior of short-circuit frequency and duration time and electrical conductivity on arc turn- on during SMAW (AC with E6013 electrodes

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    Alejandro García Rodríguez

    2009-03-01

    Full Text Available El presente trabajo tiene como objetivo la evaluación del comportamiento del tiempo de duración, la frecuencia de los cortocircuitos y la conductividad durante el reencendido del arco en el proceso de soldadura SMAW (Shielded Metal Arc Welding, con corriente alterna y electrodos E6013. El análisis estadístico no-paramétrico garantiza un procesamiento robusto de los datos, atenuando la influencia de valores atípicos y errores derivados del empleo de aproximaciones a distribuciones continuas conocidas. La mediana y la mediana de la desviación absoluta (MAD, respecto a la mediana de los datos, constituyen los estimadores de localización y dispersión utilizados, respectivamente. El electrodo, en el régimen de 160 A, presenta una mayor estabilidad, en el aporte metálico, dada por el menor valor del MAD promedio del período de cortocircuito (39,36 ms y de la duración del cortocircuito (1,43 ms, reafirmada con la presencia de una mayor conductividad eléctrica durante el reencendido (1766,17x10-3 S·s-1.The objective of this work is the valuation of the behavior of short-circuits frequency and duration time and electrical conductivity on arc reigniting in SMAW (Shielded Metal Arc Welding process with alternate current and E6013 electrodes. The non parametric statistic analysis realize a robust data processing, minimizing the outliers influence and mistakes derivates about employ of approximations to well know continues distributions. The median and the median absolute deviation (MAD respect to median of the data are the localization and dispersion estimators used, respectively. The electrode at 160 A present a better stability on metal transference supported on the most little value of MAD for the period of transference (39,36 ms, and the MAD of the short-circuit duration (1,43 ms, according with the presence of a major electric conductivity during the arc reigniting (1766,17x10-3 S·s-1.

  10. La espada de La Perla. Estudio de las empuñaduras de remaches con doble arco: un Unicum en la serie de armas europeas de la Edad del Bronce

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    Gómez Ramos, Pablo

    2001-12-01

    Full Text Available The study of the Bronze-Age sword from La Perla (Madrid, Spain shows the development of a unique hilt design in the shape of a double-arch during the Early and Middle Bronze Ages. After the well-known paper by Almagro-Gorbea in 1972 on the Guadalajara sword, new archaeological finds during the last thirty years have shown the singularity of this system as against those employed in other parts of Europe, a singularity confirmed by numerous metallurgical analyses of Bronze Age swords.

    El estudio de la espada madrileña de La Perla viene a constatar un modelo único de enmangar espadas en España durante el Bronce Antiguo y Medio, mediante empuñaduras de doble arco. Desde el trabajo clásico de Almagro Gorbea en 1972 sobre la espada de Guadalajara, se han venido sucediendo en estas casi tres décadas, nuevos hallazgos arqueológicos que refuerzan la singularidad del ejemplo español con respecto a otras áreas europeas y que se completa con la investigación de los análisis metalúrgicos realizados a numerosas espadas de la Edad del Bronce.

  11. Microestructura de una unión disímil AISI 321 y una aleación A 351 grado HK-40 obtenida mediante soldadura manual por arco eléctrico

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    Reilis Fuentes-Guilarte

    2016-05-01

    Full Text Available El objetivo fue establecer el comportamiento microestructural de una unión disímil de acero inoxidable austenítico AISI 321 y de la aleación A 351 grado HK 40 obtenida por fundición mediante soldadura manual por arco eléctrico y electrodos revestidos del tipo E 309 L-16. La estructura ferrita–austeníta que se forma en la unión del acero con la aleación es resultado del elevado contenido de carbono de la segunda. La baja velocidad de enfriamiento del cordón de soldadura revela ausencia de discontinuidades en el retículo cristalino de la zona afectada térmicamente y atenúa la formación de carburos de cromo del tipo Cr23C6, que puede formar la aleación A 351 grado HK 40 durante la difusión del volumen de fracción en masa del cromo.

  12. Utilização da safena magna in situ para arterialização do arco venoso do pé The great saphenous vein in situ for the arterialization of the venous arch of the foot

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    Cesar Roberto Busato

    2010-09-01

    Full Text Available CONTEXTO: O tratamento da isquemia crítica de membros inferiores sem leito arterial distal pode ser realizado por meio da inversão do fluxo no arco venoso do pé. OBJETIVO: O objetivo deste trabalho foi apresentar a técnica e os resultados obtidos com a arterialização do arco venoso do pé, mantendo a safena magna in situ. MÉTODOS: Dezoito pacientes, dos quais 11 com aterosclerose (AO, 6 com tromboangeíte obliterante (TO e 1 com trombose de aneurisma de artéria poplítea (TA foram submetidos ao método. A safena magna in situ foi anastomosada à melhor artéria doadora. O fluxo arterial derivado para o sistema venoso progride por meio da veia cujas válvulas são destruídas. As colaterais da veia safena magna são ligadas desde a anastomose até o maléolo medial, a partir do qual são preservadas. RESULTADOS: Dos pacientes, 10 (55,6% mantiveram suas extremidades, 5 com AO e 5 com TO; 7 (38,9% foram amputados, 5 com AO, 1 com TO e 1 com Ta; houve 1 óbito (5,5%. CONCLUSÃO: A inversão do fluxo arterial no sistema venoso do pé deve ser considerada para salvamento de extremidade com isquemia crítica sem leito arterial distal.BACKGROUND: Critical lower limb ischemia in the absence of a distal arterial bed can be treated by arterialization of the venous arch of the foot. OBJETIVE: The objective of this paper was to present the technique and the results of the arterialization of the venous arch of the foot with the in situ great saphenous vein. METHODS: Eighteen patients, 11 with atherosclerosis (AO, 6 with thromboangiitis obliterans (TO and 1 with popliteal artery aneurysm thrombosis were submitted to venous arch arterialization. The in situ great saphenous vein was anastomosed to the best donor artery. Arterial flow derived from the venous system progresses through the vein whose valves were destroyed. The collateral vessels of the great saphenous vein are linked from the anastomosis to the medial malleolus and preserved from this point

  13. Análise do arco longitudinal medial em adolescentes usuárias de calçados de salto alto Analysis of the medial longitudinal arch in adolescents users of high heeled shoes

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    Sílvia Maria Amado João

    2012-03-01

    Full Text Available O objetivo do estudo foi analisar a influência do calçado de salto alto no arco longitudinal medial (ALM do pé de adolescentes. Fizeram parte do estudo 82 adolescentes entre 13 e 20 anos, sendo 54 não usuárias (grupo controle - GC e 28 usuárias (grupo experimental - GE de calçado de salto alto. Foram obtidas as impressões plantares de ambos os pés para análise do ALM, antes e depois do uso de um calçado de salto alto padronizado por um período de 30 minutos. As impressões plantares foram avaliadas pelo índice de Chippaux-Smirak (ICS e pelo arco de Cavanagh & Rodgers (ICR. O teste de Shapiro-Wilks foi utilizado para a verificação da normalidade dos dados. Variáveis paramétricas pareadas foram tratadas com o Teste t de Student pareado e as não-paramétricas com o teste de Wilcoxon. As comparações não-pareadas foram realizadas com o teste t de Student para as variáveis paramétricas e o de Mann-Withney para as não-paramétricas, com nível de significância de 0,05. Houve diferença no ALM entre os lados direito e esquerdo apenas no GC antes do uso do calçado. Na comparação entre antes e depois do uso do sapato, notou-se diferença apenas no pé esquerdo do GC pelo ICS. Já entre GC e GE, não houve diferença. Apesar dos resultados não evidenciarem alterações no ALM, deve-se lembrar que esta é uma medida estática, sendo necessários estudos do componente dinâmico e do uso do calçado de salto crônico para correlacionar com os achados deste trabalho.The aim of this study was to analyze the influence of high heeled shoes in foot´s medial longitudinal arch in adolescents. Eighty two female adolescents between 13 and 20 years old participated, being 54 non-users of high heleed shoes (control group - GC and 28 usuaries (experimental group - GE. The footprints of both feet were collected to analyse the medial longitudinal arch (ALM, before and after 30 minutes using a shoe with heel high given by the examiner, an then

  14. Utilización de las escorias de los hornos de arco eléctrico y de cuchara como materiales de construcción. // Use of slags from ladle and electric arc furnaces as construction materials.

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    R. Zaragoza Valdés

    2001-01-01

    Full Text Available La necesidad que tiene la humanidad de que las producciones sean cada día mas limpias, así como la que tiene el país del aumento dela rentabilidad de las empresas, hace necesario el estudio del uso de las escorias que se obtienen en la producción de acero, principalresidual de este tipo de producción. En el trabajo se estudia la utilización de la escoria del Horno de Arco Eléctrico (HAE comomaterial de relleno en la confección de bloques de hormigón para la construcción de edificaciones, sustituyendo la grava de granito.Se estudia, además, el uso de la escoria de los hornos cuchara (HC como sustituto del clinquer en la fabricación de cementosportland. Se obtienen resultados positivos para la protección del medio ambiente y la economía de la empresa metalúrgica.Palabras claves: producción de acero, escorias, medio ambiente, cementos, materiales para la construcción.________________________________________________________________________________Abstract:The existing necessity of clean productions as welll as the profitability of enterprises that the Cuban economy is demanding makes itnecessary to carry out a study of slags that constitute t he main residue of the steel production. This paper presents the use of slags comingfrom electric arc furnaces (EAF as a substitute for gravel in the production of concrete bricks. The use of slags coming from ladle furnaces(LF to replace clinker in the production of Portland Cement is also shown. Positive results are obtained such as the protection of theenvironment and the economic growth of the enterperise.Key words:Steel making, slags, environment protection, cement, construction materials.

  15. Efecto del pH y de la adición de fosfatos de sodio sobre las propiedades de gelificación y emulsión de surimi de trucha arco-iris (Oncorhynchus mykiss Efeito do pH e da adição de fosfatos de sódio sobre as propriedades de gelificação e emulsão de surimi de truta arco-íris (Oncorhynchus mykiss

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    Juan Díaz-Vela

    2008-09-01

    Full Text Available Para la elaboración de surimi se han empleado distintas técnicas, sin embargo, es indispensable mantener la funcionalidad de las proteínas musculares durante su extracción, ya que son afectadas principalmente por el pH. La incorporación de fosfatos en productos cárnicos afecta el pH, teniendo como consecuencia una mejora en la capacidad de retención de agua de las proteínas musculares, alterando la funcionalidad de estos productos. Se utilizó la metodología de superficie de respuesta para determinar el efecto de cinco niveles de pH y cinco concentraciones de una mezcla de fosfatos de sodio comercial sobre la funcionalidad de surimi de trucha arco-iris, evaluada por su capacidad de emulsión y trabajo de emulsión, fuerza de gel y trabajo de penetración de geles de surimi. Los resultados obtenidos indican que el incremento en la concentración de fosfatos de sodio mejoró la funcionalidad del surimi y a pH alcalino las propiedades de emulsión mejoraron, pero se afectaron negativamente las propiedades de gelificación.Para a elaboração de surimi, diferentes técnicas podem ser usadas, mas é indispensável manter a funcionalidade das proteínas miofibrilares, afetadas principalmente pelo pH, durante o processo. A incorporação de fosfatos a produtos cárneos afeta o pH, tendo como conseqüência, principalmente, a melhoria da capacidade de retenção de água do músculo, alterando a funcionalidade destes produtos. A metodologia de superfície de resposta foi usada para determinar a influência de cinco níveis de pH e cinco concentrações de uma mistura comercial de fosfatos de sódio sobre a funcionalidade de surimi de truta arco-íris, avaliada através de sua capacidade de emulsificação e trabalho de emulsificação, força de gel e trabalho de penetração de géis de surimi. Os resultados obtidos indicam que o aumento na concentração dos fosfatos de sódio melhorou a funcionalidade do surimi e que o pH alcalino favoreceu

  16. Efecto del tratamiento con leptina sobre la actividad del sistema glucosensor y la expresión de neuropéptidos implicados en la regulación de la ingesta de alimento en trucha arcoíris (Onchorhynchus mykiss)

    OpenAIRE

    Ariel J. Aguilar

    2012-01-01

    La presente revisión se focaliza en el efecto modulatorio de la leptina sobre la actividad del sistema glucosensor y la expresión de neuropéptidos orexigénicosy anorexigénicos involucrados en la regulación de la ingesta de alimento en trucha arco iris. De manera similar al efecto que produce en mamíferos, la administración ICV de leptina induce cambios dosis dependiente en los parámetros relacionados con la glucosensibilidad en hipotálamo y cerebro posterior (incrementos del potencial glucolí...

  17. Formazione, apprendimento e nuove prospettive e-learning. Lo sviluppo delle nuove tecnologie didattiche e la creazione di sistemi di apprendimento lungo l’intero arco della vita

    OpenAIRE

    Lusetti, Marialuisa

    2008-01-01

    The thesis of this paper is based on the assumption that the socio-economic system in which we are living is characterised by three great trends: growing attention to the promotion of human capital; extremely rapid technological progress, based above all on the information and communication technologies (ICT); the establishment of new production and organizational set-ups. These transformation processes pose a concrete challenge to the training sector, which is called to satisf...

  18. Radiological impact assessment of arc welding supplies rutile; Evaluacion del impacto radiologico de la soldadura por arco con consumibles de rutilo

    Energy Technology Data Exchange (ETDEWEB)

    Rozas Guinea, S.; Herranz Soler, M.; Perez Marin, C.; Idoeta Hermandorena, R.; Alegria gutierrez, N.; Nunez-Lagos Rogla, R.; Legarda Ibanez, F.

    2013-07-01

    Consumables for welding containing rutile, the coating of the electrode or the filling of tubular thread, are the most widely used and also the most radioactive since the rutile is a mineral containing traces of natural radionuclides, and is therefore considered Normal Occurring Radioactive Material (NORM). As these electrodes and wire are consumed, small particles, aerosols and gases are emitted to the atmosphere of work, and may be inhaled by the welder. Therefore, and also according to the current regulatory framework and work carried out previously by the author on the radiological impact of the process of manufacture and storage of coated rutile electrodes, the objectives are: 1Calcular the internal dose for inhalation during two types of welding, one with electrodes coated and the other with thread. 2 calculate the external dose due to the deposition of particles in the work environment, slag and the immersion of the soldering iron in the cloud of smoke. 3 to assess the radiological impact. (Author)

  19. Isolation and characterization of hemolytic bacteria Fish disc and Neon RainbowIsolamento e caracterização de bactérias hemolíticas de Acará Disco e Neon Arco-Íris

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    José Luiz Pedreira Mouriño

    2012-05-01

    Full Text Available The aim of this study was to isolate, identify and determine the ability of potential pathogenic bacteria hemolytic mite Disco (Symphysodon discus and Neon Rainbow (Melanotaenia praecox, and define which of the antibiotic Trimethoprim, Florfenicol, Chloramphenicol, Norfloxacin, Erythromycin, Bacitracin, Enrofloxacin, Tetracycline, and Furazolidone Clindamycin has better inhibitory effect in vitro, and determine the minimum inhibitory concentration (MIC for Chloramphenicol, Norfloxacin, Erythromycin and Enrofloxacin. In an outbreak of ornamental fish deaths were isolated nine strains of Gram negative, hemolytic where 3 were identified, two as Vibrio cholerae and one as Citrobacter braakii. With these strains were performed antibiogram and was determined the minimum inhibitory concentration at two different temperatures (22 and 30 ° C. Antibiotics Enrofloxacin, Norfloxacin, florfenicol, chloramphenicol and trimethoprim showed the best results in vitro inhibition against the Vibrio cholerae, and Citrobacter braakii. The MIC increased in 30 ° C for erythromycin and enrofloxacin against pathogens, while for Florfenicol and norfloxacin the MIC was not influenced by temperature.O objetivo deste estudo foi isolar, identificar e determinar a capacidade hemolítica de possíveis bactérias patogênicas do Acará Disco (Symphysodon discus e Neon Arco-íris (Melanotaenia praecox, e definir qual o antibiótico entre Trimetoprim, Florfenicol, Cloranfenicol, Norfloxacina, Eritromicina, Bacitracina, Enrofloxacina, Tetraciclina, Furazolidona e Clindamicina possui melhor efeito inibitório in vitro, e determinar a concentração inibitória mínima (MIC para Cloranfenicol, Norfloxacina, Eritromicina e Enrofloxacina. Em um surto de mortalidade de peixes ornamentais foram isoladas nove cepas de bactérias Gram negativas, onde três hemolíticas foram identificadas, duas como Vibrio cholerae e uma como Citrobacter braakii. Com estas foram realizados antibiogramas

  20. Evolução do Segmento Norte do Orógeno Itabuna-Salvador-Curaçá: Cronologia da Acresção de Arcos, Colisão Continental e Escape de Terrenos

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    Elson Paiva Oliveira

    2004-04-01

    Full Text Available Datações de alta precisão em zircões (U-Pb e Pb-Pb e dados Sm-Nd e Pb-Pb em rocha-total são utilizados parareconstituir a evolução tectônica do Segmento Norte do Orógeno Itabuna-Salvador-Curaçá, nordeste do Cráton São Francisco.Acresções de crosta oceânica e/ou arcos insulares ocorreram há cerca de 3,3 Ga (Greenstone Belt Mundo Novo e entre 2,2 -2,12 Ga (Greenstone Belt do Rio Itapicuru e Seqüência Rio Capim. Margens continentais ativas, tipo andina, podem ter-seformado entre 3,08 - 2,98 Ga (migmatitos e TTG de Retirolândia-Santa Luz e granulitos do vale do Rio Jacurici e 2,69 - 2,63Ga (Complexo Caraíba. Entretanto, a colisão continental que construiu a estruturação atual do orógeno deve ter acontecidopor volta de 2109 Ma, como inferido da intrusão sintectônica do Tonalito Itareru, no limite entre o Greenstone Belt do RioItapicuru e gnaisses bandados do embasamento, no Bloco Serrinha. A continuação da colisão provocou escapes laterais deblocos (Bloco Uauá e intrusão de corpos graníticos alongados (Sienito Itiúba, domo de Ambrósio, quartzo-monzonito Capelado Alto Alegre ao longo do orógeno, entre aproximadamente 2084 Ma e 2039 Ma. A mudança de tectônica de convergênciade massas continentais para deslocamento de blocos ao longo do orógeno pode ter resultado de colisão oblíqua ou de tectônicade endentação.

  1. Análisis industrial de la reducción del óxido de hierro mediante la inyección de finos de carbón al horno eléctrico de arco

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    Conejo, A. N.

    1999-04-01

    Full Text Available An industrial study was conducted in electric arc furnaces (EAF employing 100% direct reduced iron to evaluate the oxidation level of the slag-metal system. Energy consumption is decreased by injecting gaseous oxygen, however, slag oxidation also increases. In order to reduce the extent of oxidation while keeping a high volume of the oxygen injected, it is required: a to optimize the carbon injection practice, b to increase the carbon concentration of sponge iron, c to operate with soluble carbon in both the metal and the slag beyond a critical level and d to employ a low temperature profile, on average 1,650°C. A method to define the proper amount of carbon in sponge iron which considers their metallization as well as the amount of oxygen injected is proposed. The position of the lance is critical in order to optimize the practice of carbon injection and assure a better residence time of the carbon particles within the furnace.

    Se realizó un estudio a escala industrial en hornos eléctricos de arco (HEA empleando una carga metálica compuesta al 100% de hierro esponja (DRI - Direct Reduction Iron, el cual evalúa el grado de oxidación del sistema metal-escoria. El consumo de energía disminuye con la inyección de oxígeno, sin embargo, el grado de oxidación de la escoria se incrementa. Para reducir el grado de oxidación de la escoria y mantener volúmenes altos de oxígeno inyectado es necesario: a optimizar la práctica de inyección de finos de carbón, b incrementar el porcentaje de carbono del DRI, c hacer que trabaje el HEA por encima de una concentración crítica de carbono disuelto, tanto en el metal como en la escoria, y d emplear temperaturas bajas, del orden de 1.650°C. Se propone un método rápido para definir el carbono del DRI en función de su grado de metalización y de la cantidad de oxígeno a inyectar. Para optimizar la práctica de inyección de finos de carbón es crítica la posición de la lanza de inyecci

  2. Resistencia al desgaste de recubrimientos Fe-Nb-Cr-W, Nb, AISI 1020 y AISI 420 producidos por proyección térmica por arco eléctrico

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    López-Covaleda, E. A.

    2013-10-01

    Full Text Available The commercial materials 140MXC (with iron, tungsten, chrome, niobium, 530AS (AISI 1015 steel and 560AS (AISI 420 steel on AISI 4340 steel were deposited using thermal spray with arc. The aim of work was to evaluate the best strategy abrasive wear resistance of the system coating-substrate using the following combinations: (1 homogeneous coatings and (2 coatings depositing simultaneously 140MXC + 530AS and 140MXC + 560AS. The coatings microstructure was characterized using Optical microscopy, Scanning electron microscopy and Laser confocal microscopy. The wear resistance was evaluated through dry sand rubber wheel test (DSRW. We found that the wear resistance depends on the quantity of defects and the mechanical properties like hardness. For example, the softer coatings have the biggest wear rates and the failure mode was characterized by plastic deformation caused by particles indentation, and the other hand the failure mode at the harder materials was grooving. The details and wear mechanism of the coatings produced are described in this investigation.Mediante proyección térmica de arco eléctrico fueron depositados tres materiales comercialmente conocidos como: 140MXC (a base de hierro, wolframio, cromo y niobio, 530AS (acero AISI 1020 y 560AS (acero AISI 420, sobre acero AISI 4340. Con el objetivo de evaluar la mejor estrategia para incrementar la resistencia al desgaste abrasivo, los recubrimientos fueron depositados de dos formas: (1 monocapas homogéneas de cada material y (2 recubrimientos depositando con alambres disimiles de 140MXC + 530AS y 140MXC + 560AS. Los recubrimientos fueron caracterizados microestructuralmente mediante Difracción de rayos X, Microscopía óptica, Microscopía láser confocal y Microscopía electrónica de barrido. La evaluación de la resistencia al desgaste abrasivo se realizó mediante ensayo con arena seca y rueda de caucho (DSRW. Se encontró que la resistencia al desgaste depende entre otras de las

  3. Efecto de los ciclos térmicos de soldadura por arco eléctrico indirecto modificado (AEIM en las propiedades mecánicas de la aleación AA6061-T6

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    Ambriz, Ricardo R.

    2009-02-01

    Full Text Available Results of temperature measurements during welding of 12.7 mm thick AA6061-T6 alloy plates by modified indirect electric arc (MIEA are presented. This study describes the thermal cycles of the heat affected zone (HAZ and also in the fusion zone. Depending upon the position of the transducers, the maximum temperatures measured in the HAZ range from 308 to 693 °C, these measurements were related with the tensile test results, and the failure zone reported previously by the authors [1]. It was observed that, there is a decrease in the mechanical strength of the welded joints, due to the microstructural changes suffered by AA6061-T6 alloy in which formation of the β’ occurs according to the TTT transformation diagram. The inherent cooling conditions of the weld pool observed for the MIEA technique (only one pass of welding, have permitted to establish the characteristics of solidification and microstructure for a specific cooling rate.

    Se presentan los resultados de medición de temperatura durante la soldadura por arco eléctrico indirecto modificado (AEIM de la aleación AA6061-T6. Éstas, describen los ciclos térmicos de la zona afectada por el calor (ZAC y en la zona de fusión. Los resultados muestran que las temperaturas máximas medidas en la ZAC se encuentran en un rango de 308 a 693 °C, dependiendo de la posición de los sensores, estas mediciones fueron correlacionadas con los resultados de resistencia a la tracción y la zona de fallo, reportados previamente por los autores[1]. Se observó que existe una disminución en la resistencia mecánica de las uniones, debido a los cambios microestructurales por la formación de precipitados sobreenvejecidos, β’, de acuerdo con su diagrama de transformación (TTT. Las condiciones de enfriamiento en el baño fundido inherentes a la técnica por AEIM (un solo paso de soldadura, permitieron establecer las características de solidificación y microestructura esperada

  4. Estratégia cirúrgica na transposição das grandes artérias associada à obstrução do arco aórtico Surgical strategy in transposition of the great arteries with aortic arch obstruction

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    Bayard Gontijo Filho

    2007-06-01

    Full Text Available OBJETIVO: Analisar nossa experiência no tratamento cirúrgico da transposição das grandes artérias (TGA associada à obstrução do arco aórtico. MÉTODO: Entre janeiro de 1998 e dezembro de 2005, realizamos 223 operações de Jatene para correção de TGA: 21 (9,4% pacientes apresentavam obstruções do arco aórtico. A anatomia do arco aórtico evidenciou: coarctação da aorta localizada (n=10; coarctação com hipoplasia tubular do arco aórtico (n=6; interrupção do arco aórtico (n=5. Comunicação interventricular (CIV: 19 pacientes (90,5%, sendo 11 do tipo Taussig-Bing. Desproporção importante entre aorta e artéria pulmonar e anomalias coronárias foram achados freqüentes. Houve 7 correções em dois estágios e 14 correções em um único estágio. A reconstrução do arco foi realizada por ressecção e anastomose término-terminal ampliada (13 ou por translocação da aorta ascendente (8. RESULTADO: Houve cinco (23,8% óbitos hospitalares; apenas um (11,1% nos últimos nove casos consecutivos. Reoperações no período hospitalar: revisão de hemostasia (5, CIV residual + coarctação não identificada (1, estenose residual de arco aórtico (1. Após a alta, houve dois óbitos e três pacientes foram submetidos a reintervenções para estenose da via de saída do ventrículo direito. CONCLUSÃO: O tratamento da transposição das grandes artérias associada à obstrução do arco aórtico apresenta alta complexidade e morbi-mortalidade. Empregamos as correções em um e em dois estágios, obtendo resultados comparáveis. Nossa preferência atual é pela correção precoce em um único estágio para todos os pacientes, independente de sua configuração anatômica.OBJECTIVE:To analyze our experience in the surgical correction of transposition of the great arteries associated with aortic arch obstruction. METHOD: From January 1998 to December 2005 we performed 223 arterial switch operations for transposition of the great

  5. Postura do pé e classificação do arco plantar de adolescentes usuárias e não usuárias de calçados de salto alto Foot posture and classification of the plantar arch among adolescent wearers and non-wearers of high-heeled shoes

    Directory of Open Access Journals (Sweden)

    Patrícia A. O. Pezzan

    2009-10-01

    Full Text Available OBJETIVOS: Correlacionar a postura dos pés com o arco plantar de adolescentes usuárias e não usuárias de calçados de salto alto. MÉTODOS: Foram selecionadas 36 adolescentes, 16 no grupo de não usuárias e 20 no grupo de usuárias, com idade entre 13 e 20 anos. A postura do pé foi analisada por fotos nas condições descalça e com calçado de salto alto tipo Anabella, previamente padronizado, após terem permanecido com ele por uma hora. Sua análise foi realizada pelo software SAPO. A impressão plantar foi realizada descalça e, a partir dela, calculado o Índice de Chipaux - Smirak para classificação do arco plantar. Para análise estatística, utilizou-se o teste t pareado para verificar igualdade entre lados direito e esquerdo. Foi realizado o teste de aderência Shapiro Wilk e, então, a análise inferencial por meio dos testes não paramétricos de Wilcoxon, o teste de Mann-Whitney e a correlação de Spearman. O nível de significância adotado foi de 0,05. RESULTADOS: Não foi encontrada correlação entre o tipo de arco plantar e a postura do pé das adolescentes estudadas. Porém, o ângulo do retropé se mostrou significativamente diferente, apresentando varo de retropé após a colocação do calçado em ambos os grupos, e o arco plantar do grupo de usuárias apresentou valores menores quanto ao Índice Chipaux - Smirak. CONCLUSÕES: Não existe correlação entre a postura do pé e o tipo de arco plantar, embora essas variáveis tenham sofrido influência do calçado de salto alto. Artigo registrado na Australian New Zealand Clinical Trials Registry (ANZCTR sob o número ACTRN12608000300370.OBJECTIVES: To investigate the relationship between foot posture and plantar arch among adolescent wearers and non-wearers of high-heeled shoes. METHODS: Thirty-six female adolescents aged 13 to 20 years were selected and grouped as 16 high-heel non-wearers and 20 high-heel wearers. Foot posture was analyzed using photos, firstly

  6. PIGMENTACION DE TRUCHA ARCO IRIS (Oncorhynchus mykiss TIPO MAR ALIMENTADAS CON DOS NIVELES DE ASTAXANTINA EN DIETAS DE CRECIMIENTO-ENGORDA: Pigmentation of rainbow trouts (Oncorhynchus mykiss fed two levels of astaxantin in their growing-fattening diets

    Directory of Open Access Journals (Sweden)

    J. Pokniak

    2001-01-01

    Full Text Available Este trabajo tuvo como objetivo evaluar el grado de pigmentación, coloración, costo económico y la respuesta productiva de truchas arco iris frente al empleo de dos niveles de astaxantina (AXT en sus dietas, utilizándose 200 truchas nacionales (variedad Cofradex con un peso inicial de 180 g. Los peces se asignaron al azar a dos tratamientos con 100 truchas cada uno. Un tratamiento utilizó una dieta que incluía 25 ppm de AXT y a los otros se le suministró una dieta con 80 ppm de AXT, siendo este último el tratamiento testigo. La respuesta productiva se evaluó por medio del peso promedio, consumo de alimento, eficiencia de conversión alimenticia, tasa de crecimiento específico, mortalidad, factor de condición, porcentaje de crecimiento y porcentaje de retención. El grado de coloración se evaluó con la Carta Color Roche® y el Abanico Colorimétrico Salmo-Fan Roche®. La pigmentación, concentración de pigmento en el filete, se midió utilizando cromatografía líquida de alta resolución (HPLC. Las respuestas productivas fueron iguales en ambos tratamientos, salvo el porcentaje de retención que aumentó al doble con 25 ppm de AXT. Se alcanzó una pigmentación de 20 y 15 ppm de AXT con los aportes dietarios de 80 y 25 ppm de AXT, respectivamente, la coloración obtenida con los dos tratamientos, se enmarcó dentro de la coloración comercial mínima exigida para truchas arco iris. La incorporación de 25 ppm de AXT en las dietas permitió disminuir 2,2 veces el costo de la incorporación de pigmentos, lo que es una buena alternativa para los productores frente al desafío de elevar su competitividad en el mercado mundial de salmónidos de cultivoThe color in salmonids is the main condition for an appropriate trading. This color is a result of the retained pigment incorporated to their diets. The present study was conducted to evaluate the pigmentation degree, color, costs of diets and the productive performance of rainbow trouts

  7. Uso del arco en las cohortes pretorianas

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    Ceñal Martínez, Héctor

    2011-12-01

    Full Text Available In this article we have attempted to present a general idea of the use of a weapon that is not usually associated with Praetorian soldiers, showing how soldiers were forced to adapt to new times. We have analyzed epigraphic and literary sources, and we can consider as proven the employment of this weapon in the praetorium throughout the 3rd century AD as a result of adaptation to new battle techniques in the face of old and new enemies.

    A lo largo de este artículo hemos realizado una aproximación al uso de un arma que normalmente no se asocia con los soldados de la guardia pretoriana, mostrando así cómo los nuevos tiempos obligaron a estos soldados a adaptarse. Para ello hemos recurrido tanto a las fuentes clásicas como a la epigrafía. Así podemos aseverar sin duda el empleo de esta arma en el pretorio durante el siglo III d. C., como consecuencia de los nuevos modos de combate ante enemigos nuevos y viejos.

  8. Avaliação da profundidade do palato e das dimensões do arco dentário superior em indivíduos com má oclusão e diferentes tipos faciais Evaluation of palatine depth and dimensions of the upper dental arch in patients with malocclusion and different facial types

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    Andrea Esteves; Silvana Bommarito

    2007-01-01

    OBJETIVO: o deste estudo foi avaliar a profundidade do palato e as dimensões do arco dentário superior de indivíduos com má oclusão e diferentes tipos faciais. METODOLOGIA: a amostra empregada neste estudo foi constituída por telerradiografias em norma lateral e modelos de estudo de 135 pacientes com más oclusões de Classe I (n = 45), Classe II (n = 45) e Classe III (n = 45) de Angle, sendo 67 do gênero feminino e 68 do gênero masculino, com faixa etária entre 12 e 21 anos de idade, divididos...

  9. Interpretación y correlación de registros geofísicos en sondeos de captación de aguas suberráneas para la caracterización hidrogeológica y la gestión de la explotación : aplicación en el arco noroeste de la cuenca de Madrid

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    Caparrini Marín, Natalia

    2006-01-01

    El trabajo realizado en esta Tesis Doctoral consiste en el desarrollo de una metodología para el estudio geológico e hidrogeológico de cuencas detríticas continentales a partir del análisis e interpretación de registros geofísicos obtenidos en sondeos de captación de aguas subterráneas y su aplicación a 13 sondeos situados en el arco Noroeste de la Cuenca de Madrid. La metodología comienza con la interpretación pormenorizada, homogénea y automática de todos los registros geofís...

  10. Estudo comparativo das dimensões transversais dos arcos dentários entre jovens com oclusão normal e má oclusão de Classe II, 1ª divisão A comparative study of arch widths of white Brazilians with normal occlusion and Class II, Division 1, malocclusion

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    Rejman Roberto; Décio Rodrigues Martins; Helio Scavone Jr.; Flávio Augusto Cotrim-Ferreira; Flávio Vellini-Ferreira

    2006-01-01

    OBJETIVO: avaliar as possíveis diferenças nas dimensões transversais dos arcos dentários superiores e inferiores entre jovens com oclusão normal e má oclusão de Classe II, 1ª divisão. METODOLOGIA: foram avaliados 170 pares de modelos em gesso de jovens brasileiros leucodermas, com dentadura permanente, sendo 76 com oclusão normal (41 do gênero feminino e 35 do masculino) e média de idade de 13 anos e 6 meses e 94 com má oclusão de Classe II, 1ª divisão (58 do gênero feminino e 36 do masculino...

  11. Modificação técnica para correção de coarctação aórtica com hipoplasia do arco aórtico Technical modification for correction of aortic coarctation using hypoplastic arch

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    José Alberto Caliani

    2008-09-01

    Full Text Available OBJETIVO: Estudar a viabilidade técnica e resultados imediatos da modificação técnica proposta por Caliani et al. para correção da coarctação aórtica com hipoplasia do arco aórtico. MÉTODOS: Entre janeiro de 2005 e julho de 2006, nove neonatos com coarctação aórtica e hipoplasia do arco aórtico foram submetidos a uma nova abordagem cirúrgica para correção do defeito. A definição de hipoplasia do arco aórtico seguiu os critérios de Moulaert, segundo os quais o arco aórtico é considerado hipoplásico quando seu diâmetro atinge 50% do diâmetro da aorta ascendente. Nesta série, foram selecionados apenas pacientes com hipoplasia proximal e distal do arco aórtico. Várias técnicas foram propostas anteriormente, mas gradientes residuais importantes foram observados, assim como há o inconveniente da ligadura definitiva da artéria subclávia esquerda. A modificação técnica consiste em: toracotomia póstero-lateral esquerda, ampla mobilização da aorta descendente, com ligadura dos dois primeiros ramos intercostais, transecção da artéria subclávia esquerda em sua base, ressecção ampla de toda zona hipoplásica e adjacências do ducto arterioso, anastomose término-terminal entre o arco aórtico e aorta descendente com fio de PDS 7-0 e reimplante da artéria subclávia sobre a artéria carótida esquerda com anastomose látero-terminal. RESULTADOS: Não houve óbito per-operatório ou tardio, o gradiente residual médio foi de 5 mmHg. Até o presente, não observamos nenhum caso de recoarctação ou de lesão neurológica medular. CONCLUSÃO: A despeito do reduzido número de casos e do seguimento curto, esta modificação técnica pode representar uma excelente opção para tratamento deste complexo grupo de pacientes.OBJECTIVES: To study technical feasibility and early results of the technical modification suggested by Caliani et al. for correction of aortic coarctation and aortic arc. METHODS: Between January

  12. A discrepância de tamanho dentário, de Bolton, na oclusão normal e nos diferentes tipos de más oclusões, bem como sua relação com a forma de arco e o posicionamento dentário Bolton tooth size discrepancy in normal occlusion and in different types of malocclusions and its relationship to arch form and tooth positioning

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    Luiz Sérgio Carreiro

    2005-06-01

    Full Text Available Esta pesquisa teve como objetivo geral avaliar a discrepância de tamanho dentário, na oclusão normal e nos diferentes tipos de más oclusões e a sua relação com as medidas que determinam a forma de arco e o posicionamento dentário na região anterior. Para tanto, foram estudados 185 pares de modelos de gesso, divididos em 4 grupos: Grupo 1 (composto por 41 pares com Oclusão Normal, sendo 20 do gênero masculino e 21 do gênero feminino; Grupo 2 (composto por 44 pares com má oclusão de Classe I, divisão 1, sendo 22 do gênero masculino e 22 do gênero feminino; Grupo 3 (composto por 54 pares com má oclusão de Classe II, sendo 28 do gênero masculino e 26 do gênero feminino e Grupo 4 (composto por 46 pares com Classe III, sendo 23 do gênero masculino e 23 do gênero feminino. Observou-se que não ocorreu dimorfismo sexual entre as discrepâncias de tamanho dentário e os diferentes tipos de oclusão dentária; as proporções estabelecidas por Bolton não se aplicaram ao grupo com Oclusão Normal; na Oclusão Normal, Classe I, Classe II e Classe III, houve um predomínio de excesso dentário total (RAZ12 no arco inferior; na Classe I houve uma igualdade na distribuição de excesso dentário anterior (RAZ6 nos arcos superior e inferior; na Oclusão Normal, Classe II e Classe III, ocorreu um predomínio de excesso dentário anterior (RAZ6 no arco inferior, em relação ao arco superior; os excessos dentários não contribuíram na ocorrência das más oclusões e as discrepâncias total e anterior (RAZ12 e RAZ6 não interferiram diretamente nas larguras e comprimentos dos arcos, bem como no posicionamento dos dentes anteriores.The general purpose of this study was to evaluate tooth size discrepancy in normal occlusion and in different malocclusion types and its relationship to measurements which determine arch form and anterior tooth positioning. One hundred and eighty five sets of casts of leucoderms were divided into four groups

  13. Estudo comparativo das dimensões transversais dos arcos dentários entre jovens com oclusão normal e má oclusão de Classe II, 1ª divisão A comparative study of arch widths of white Brazilians with normal occlusion and Class II, Division 1, malocclusion

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    Rejman Roberto

    2006-08-01

    Full Text Available OBJETIVO: avaliar as possíveis diferenças nas dimensões transversais dos arcos dentários superiores e inferiores entre jovens com oclusão normal e má oclusão de Classe II, 1ª divisão. METODOLOGIA: foram avaliados 170 pares de modelos em gesso de jovens brasileiros leucodermas, com dentadura permanente, sendo 76 com oclusão normal (41 do gênero feminino e 35 do masculino e média de idade de 13 anos e 6 meses e 94 com má oclusão de Classe II, 1ª divisão (58 do gênero feminino e 36 do masculino e média de idade de 13 anos e 9 meses. Este grupo com má oclusão foi dividido em duas categorias: Classe II sem apinhamento e Classe II com apinhamento. Compararam-se as distâncias intercaninos, interprimeiros pré-molares e intermolares, em ambos os arcos dentários. RESULTADOS: em relação ao grupo com oclusão normal, os jovens do gênero masculino evidenciaram as seguintes diferenças estatisticamente significantes: 1 distância intercaninos inferiores maior para o grupo com Classe II sem apinhamento; 2 distância interprimeiros pré-molares superiores menor para o grupo com Classe II sem apinhamento e 3 distâncias interprimeiros pré-molares e intermolares, superiores e inferiores, menores para o grupo com Classe II com apinhamento. Por sua vez, o gênero feminino evidenciou: 1 distâncias interprimeiros pré-molares e intermolares superiores menores para o grupo com Classe II sem apinhamento e 2 distâncias interprimeiros pré-molares e intermolares, superiores e inferiores, menores para o grupo com Classe II com apinhamento. CONCLUSÃO: de um modo geral, os jovens com má oclusão de Classe II, 1ª divisão, apresentaram uma tendência para deficiência transversal posterior dos arcos dentários, principalmente no grupo com apinhamento.AIM: to evaluate possible differences of the upper and lower dental arches widths among youths with normal occlusion and Class II, division 1, malocclusion. METHODS: the evaluation was conducted

  14. Geología de la sierra de Chávez en el sector centro-occidental de la sierra de Valle Fértil, San juan: metamorfismo y evolución tectónica de la corteza inferior del arco Famatiniano

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    Eber Cristofolini

    2013-12-01

    Full Text Available La geología de la sierra de Chávez está constituida por rocas ígneas y metamórficas intercaladas complejamente a todas las escalas, y corresponderían a la unidad máfica definida en la sierra de Valle Fértil. Cinco asociaciones litológicas han sido identificadas en éste complejo: diorítica, gábrica, metasedimentaria, milonítica y granítica-pegmatítica. Las estimaciones termobarométricas realizadas en las migmatitas indican condiciones de equilibrio para el pico metamórfico (M1 de 876 °C y 8,3 Kbar y reflejarían el efecto del magmatismo durante el Ordovícico Temprano (489 - 470 Ma. Las presiones aquí estimadas corresponden a las mayores paleo-profundidades reconocidas en todo el arco magmático Famatiniano. Las relaciones de campo y el análisis estructural permitieron establecer la presencia de varias fábricas magmáticas y tectónicas, las cuales son: i estructuras magmáticas (S0 interpretadas como una foliación magmática primaria, ii foliación submagmática a subsólida de alta temperatura y foliación metamórfica (S1, iii foliación milonítica estabilizada en facies de anfibolita (S2a y esquistos verdes (S2b y iv foliación frágil (S3 definida como un clivaje de fractura centimétrico. (S0 y (S1 están asociadas al primer estadío de deformación (D1 reconocido en la zona, desarrollado en condiciones de alta temperatura (facies de granulita y coetáneo con el magmatismo y el pico metamórfico (M1. (S2a,b y (S3 transponen a las estructuras ígneas y metamórficas generadas durante el evento D1, y se asocian a un segundo y tercer estadío de deformación (D2-D3, representando una evolución progresiva de la deformación desde dominios dúctiles a frágiles, vinculadas a las etapas de cierre y exhumación del arco Famatiniano.

  15. Influência da refusão por plasma na microestrutura de um revestimento Fe-Mn-Cr-Si depositado por aspersão térmica arco elétrico sobre aço inoxidável ASTM A743-CA6NM Influence of plasma remelting on the microstructure of Fe-Mn-Cr-Si arc thermal spray coating deposited on ASTM A743-CA6NM stainless steel

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    Anderson Geraldo Marenda Pukasiewicz

    2012-03-01

    Full Text Available ASTM A743-CA6NM é um aço inoxidável martensítico muito utilizado na fabricação de turbinas hidráulicas devido a sua elevada tenacidade, entretanto apresenta restrições com relação à regiões recuperadas por soldagem. Diferentes técnicas de deposição tem sido aplicadas com o intuito de reduzir ou eliminar a tensão residual. A deposição de revestimentos resistentes a cavitação é outra forma importante de aumentar a vida útil destes componentes. O objetivo deste trabalho é avaliar a influência do tipo e intensidade de corrente de refusão por plasma na microestrutura, composição química e microdureza de um revestimento Fe-Mn-Cr-Si resistente a cavitação depositado por aspersão térmica arco elétrico sobre aço ASTMA743-CA6NM. Observou-se que a adoção de menores valores de corrente média, assim como a utilização de corrente pulsada reduziram a formação de ferrita δ e a espessura final da ZTA, possibilitando a formação do revestimento com menores alterações na microestrutura do metal base. Verificou-se que a microestrutura e microdureza dos revestimentos refundidos não se mostraram muito sensível a variações na diluição do metal base. A utilização de corrente contínua promoveu um alinhamento da estrutura dendrítica no sentido da movimentação da tocha, entretanto este comportamento não foi observado em revestimentos refundidos com corrente pulsada.ASTM A743-CA6NM martensitic stainless steel have been used in hydraulic turbines manufacturing, but show some restrictions in welded recovered areas. Different techniques have been applied in order to reduce or eliminate residual stress, with life increase. The deposition of cavitation resistant coatings is another important way to increase the service life of these components. The objective of this study is evaluate the influence of type and intensity of plasma remelting current on the microstructure, chemical composition and microhardness of the Fe

  16. Evaluación de la respuesta clínico-patológica e inmune humoral en crías de trucha arco iris (Oncorhynchus mykiss infectadas experimentalmente con el virus de la Necrosis Pancreática Infecciosa (IPNV Evaluation of the clinical-pathological and humoral immune response in rainbow trout fry (Oncorhynchus mykiss experimentally infected with Infectious Pancreatic Necrosis Virus (IPNV

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    LF Vega

    2011-01-01

    Full Text Available Se realizó un estudio para obtener información acerca de la relación existente entre el cuadro clínico-patológico desarrollado en crías de trucha arco iris (Oncorhynchus mykiss infectadas con el virus de la necrosis pancreática infecciosa (IPNV y el nivel de inmunoglobulina M (IgM en suero sanguíneo. Los parámetros fueron determinados hasta 45 días postinfección (dpi en peces inoculados por vía intraperitoneal (IP con 1X10(4 TCDI de IPNV o únicamente inoculados con Medio Mínimo Esencial (MEM y en un grupo control no inoculado. Los peces infectados presentaron los signos característicos de necrosis pancreática (IPN a partir de 19 dpi, alcanzando una mortalidad acumulada de 70%, con evidente emaciación de animales sobrevivientes; asimismo, el nivel de IgM en suero sanguíneo se incrementó progresivamente hasta alcanzar su punto máximo a 31 dpi; los hallazgos histopatológicos más significativos fueron: incremento de centros de melanomacrófagos en riñón, necrosis pancreática y enteritis catarral. El aislamiento viral fue posible únicamente en peces infectados a partir del día 3 y hasta los 45 dpi (P > 0,5. Los resultados observados sugieren que aunque los animales infectados con IPNV pueden desarrollar una respuesta inmune humoral caracterizada por incremento de IgM, ésta es insuficiente para desarrollar protección, ya que al mismo tiempo que se incrementa el nivel de IgM, también aumenta el título viral, acompañado de signos clínicos y lesiones histopatológicas típicas de la enfermedad.The aim of this study was to assess the relationship between the clinical-pathologic process in rainbow trout fry (Oncorhynchus mykiss infected with infectious pancreatic necrosis virus (IPNV and the immunoglobulin M (IgM levels in blood serum. Parameters were evaluated up to 45 days post infection (dpi in fish intraperitoneally inoculated (IP with 1X10(4 TCDI of IPNV, with minimal essential medium (MEM and in the control group

  17. Substituição do arco aórtico sem parada circulatória total: técnicas, táticas e resultados Substitution of the aortic arch without total circulatory arrest: techniques, tactics and results

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    Fernando Antônio Roquette REIS FILHO

    2001-09-01

    Full Text Available INTRODUÇÃO: A despeito dos avanços da cirurgia cardiovascular, das técnicas de circulação extracorpórea e dos métodos de proteção cerebral, a mortalidade nas operações de substituição ou reparo do arco aórtico permanece elevada. As alterações decorrentes da hipotermia profunda e as lesões neurológicas ainda são a maior causa de morbi-mortalidade. OBJETIVO: Demonstrar um conjunto de técnicas e táticas cirúrgicas que permite realizar a substituição do arco aórtico sem a necessidade de hipotermia e parada circulatória total e apresentar os resultados alcançados em um grupo de 10 pacientes. CASUÍSTICA E MÉTODOS: Dez pacientes do sexo masculino, com idade média de 48,7 anos, foram submetidos a substituição do arco aórtico, utilizando-se hipotermia moderada, canulação arterial em artéria subclávia direita e femoral esquerda, perfusão cerebral seletiva pela artéria subclávia e confecção da anastomose dos vasos arco no primeiro tempo. RESULTADOS: O tempo médio de perfusão cerebral seletiva foi de 14,1 minutos, de isquemia miocárdica 39,6 minutos e de circulação extracorpórea 98,9 minutos. A temperatura esofágica média foi de 26,6º C (24º C a 30º C. O tempo médio de internação foi de 18,4 dias (8 a 40. Não ocorreram óbitos imediatos ou tardios. Dois pacientes apresentaram confusão mental temporária e um apresentou hemiparesia que foi revertida. CONCLUSÕES: A combinação de técnicas e táticas empregadas permitiu uma efetiva correção das lesões em um campo cirúrgico amplo e seco. Ofereceu uma excelente proteção cerebral sem a necessidade de hipotermia profunda o que diminuiu substancialmente as complicações pós-operatórias.INTRODUCTION: Despite the development in cardiovascular techniques such as in cardiopulmonary bypass and cerebral protection the mortality in the correlations of the diseases of the aortic arch remains high. Deep hypothermic circulatory arrest and cardiopulmonary

  18. A discrepância de tamanho dentário, de Bolton, na oclusão normal e nos diferentes tipos de más oclusões, bem como sua relação com a forma de arco e o posicionamento dentário Bolton tooth size discrepancy in normal occlusion and in different types of malocclusions and its relationship to arch form and tooth positioning

    OpenAIRE

    Luiz Sérgio Carreiro; Ary Santos-Pinto; Dirceu Barnabé Raveli; Lídia Parsekian Martins

    2005-01-01

    Esta pesquisa teve como objetivo geral avaliar a discrepância de tamanho dentário, na oclusão normal e nos diferentes tipos de más oclusões e a sua relação com as medidas que determinam a forma de arco e o posicionamento dentário na região anterior. Para tanto, foram estudados 185 pares de modelos de gesso, divididos em 4 grupos: Grupo 1 (composto por 41 pares com Oclusão Normal, sendo 20 do gênero masculino e 21 do gênero feminino); Grupo 2 (composto por 44 pares com má oclusão de Classe I, ...

  19. Estudo do relacionamento ântero-posterior entre os arcos dentários decíduos, de crianças nipo-brasileiras, dos dois aos seis anos de idade Study of the anteroposterior relationship between deciduous dental arches of Japanese-Brazilian children, from 2 to 6 years of age

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    Dirce Yamada Kataoka

    2006-10-01

    Full Text Available OBJETIVO: verificar as prevalências dos diferentes tipos de relacionamentos ântero-posteriores entre os arcos dentários decíduos, bem como o possível dimorfismo sexual, em crianças nipo-brasileiras na faixa etária dos dois aos seis anos de idade. METODOLOGIA: foram avaliadas por inspeção visual 310 crianças nipo-brasileiras, matriculadas em 19 escolas do estado de São Paulo, sendo 154 do gênero masculino e 156 do feminino. Os resultados foram submetidos ao teste do qui-quadrado e revelaram ausência de dimorfismo sexual para a maioria dos relacionamentos analisados, permitindo apresentar os resultados conjuntamente para ambos os gêneros. RESULTADOS: as prevalências dos relacionamentos entre os segundos molares decíduos foram: 47,4% para o degrau mesial, 41,3% para o plano terminal reto, 5,5% para o degrau distal e 5,8% para os casos com assimetrias. Para os relacionamentos entre os caninos decíduos, conforme Foster e Hamilton, constataram-se prevalências de 77,4% para a Classe 1, 6,8% para a Classe 2, 6,8% para a Classe 3 e 9% para as relações assimétricas. Apenas a Classe 2 apresentou dimorfismo sexual, sendo de 3,9% para o feminino e de 9,7% para o masculino. Quanto à sobressaliência verificaram-se prevalências de 71,3% para a normal, 14,2% para a aumentada, 7,4% para a mordida cruzada anterior e 7,1% para a mordida topo-a-topo. RESULTADOS: concluiu-se que a maioria das crianças nipo-brasileiras avaliadas neste estudo, apresentaram um relacionamento ântero-posterior normal entre os arcos decíduos, merecendo atenção uma ligeira tendência para o desenvolvimento da Classe 3.AIM: the purpose of this cross-sectional study was to verify the prevalences of different types of anteroposterior relationships between deciduous dental arches and its possible sexual dimorphism, in Japanese-Brazilian children from 2 to 6 years of age. METHODS: a total of 310 Japanese-Brazilian children from 19 schools in São Paulo, Brazil

  20. Comparative study of frictional forces generated by NiTi archwire deformation in different orthodontic brackets: In vitro evaluation Estudo comparativo da força de atrito produzida pela deformação de arco NiTi em diferentes braquetes ortodônticos: avaliação in vitro

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    Gilberto Vilanova Queiroz

    2012-08-01

    Full Text Available INTRODUCTION: The purpose of this study was to compare the frictional forces between 0.014-in NiTi wires (Aditek with 4 mm horizontal deflection and brackets with different archwire ligation systems. METHODS: Four types of self-ligating brackets (Damon MX, Easy Clip, Smart Clip and In-Ovation, a triple bracket (Synergy and a twin bracket with 8-shaped ligature (Tecnident were tested. Twin brackets with conventional elastomeric ligatures (Morelli were used as control group. Tests were repeated 10 times for each bracket/archwire combination. Frictional forces were measured in an Instron universal tensile machine at 3 mm/minute speed and a total displacement of 6 mm. Statistical analysis comprised ANOVA and Dunnett's multiple comparison post hoc test. RESULTS: Deflection-induced frictional (DIF forces increased in the following order: Synergy, Damon, 8-shaped Ligature, Easy Clip, In-Ovation, Smart-Clip and conventional ligatures. The differences among groups were significant, with the exception of the 8-shaped ligature groups which was equal to the Damon and Easy Clip groups. CONCLUSIONS: Compared to conventional ligatures, all ligation systems tested reduced frictional forces. However, such reduction varied according to the ligation system employed.OBJETIVO: o objetivo desse trabalho foi comparar as forças de atrito entre fios NiTi 0,014" (Aditek com deformações horizontais de 4mm, e braquetes com diferentes sistemas de ligação dos arcos. MÉTODOS: foram testados 4 tipos de braquetes autoligáveis (Damon MX, Easy Clip, Smart Clip e In-Ovation, um braquete triplo (Synergy e um braquete gêmeo com amarrilho 8 (Tecnident. Como grupo controle, foi utilizado braquete gêmeo com ligadura elástica convencional (Morelli. Foram executadas 10 repetições em cada combinação arco/braquete. As forças de atrito foram medidas em máquina de tração universal Instron, com velocidade de 3mm/minuto e deslocamento total de 6mm. Para análise estat

  1. La Formación Balbuena, integrante del arco magmático pampeano en la sierra de Ambargasta, provincia de Santiago del Estero The Balbuena Formation, integrant of the Pampean magmatic arc in the Sierra de Ambargasta, Province of Santiago del Estero

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    M Koukharsky

    2003-12-01

    Full Text Available En un sector de las Sierras Pampeanas Orientales (29°25´ - 29°35´S y 63°43´ - 64°00´O, se estudió un conjunto de diques de acimutes entre 90 y 120° y espesores inferiores a los 10 m, que se incluyen en la Formación Balbuena. Sus composiciones abarcan dacitas, andesitas y andesitas basálticas y son interpretados como los representantes intermedios y básicos de una serie calcoalcalina cuyo extremo ácido se encontraría en los ya conocidos Pórfiros riodacíticos de Oncán aflorantes en el borde occidental del área. Son finamente porfíricos y se caracterizan por una intensa alteración de los componentes máficos y pastas, resultante de una importante actividad deutérica. Intruyen a los granitoides de las Formaciones Ojo de Agua y Ambargasta, ambos del Cámbrico medio a superior según determinaciones isotópicas. Sobre la base de edades K/Ar preexistentes, a las que se añaden dos nuevos valores, sumadas a observaciones de campo, se asignan los diques a un mismo ciclo magmático plutónico-volcánico, confirmando la vinculación ya aceptada en investigaciones anteriores para las volcanitas ácidas. Su signatura geoquímica apoya la existencia de un arco previamente postulado por otros autores y corresponden a una ubicación de arco a retroarco. Se habría desarrollado sobre corteza continental. La Formación Balbuena pertenecería al último de los eventos magmáticos importantes del ciclo Pampeano propuestos para la región.A set of dikes in the Eastern Sierras Pampeanas (29°25´ - 29°35´S y 63°43´ - 64°00´W trending from 90° to 120° azimuths and with thickness less than 10 m wide are assigned to the Balbuena Formation. These dikes are basaltic, andesitic to dacitic in composition representing basic to intermediate members of the calc-alkaline magmas that gave rise to the rhyodacitic Oncán Porphyries. The fine porphyritic rocks of the Balbuena Formation have an intense alteration of the mafic minerals and groundmass

  2. Distribuição de tensões em modelo fotoelástico decorrente da intrusão dos incisivos inferiores por meio do arco base de Ricketts Stress distribution in a photoelastic model resulting from intrusion of mandibular incisors using Ricketts utility arch

    Directory of Open Access Journals (Sweden)

    Cristiane Aparecida de Assis Claro

    2011-10-01

    Full Text Available OBJETIVO: o presente estudo analisou a distribuição de tensões, em modelo fotoelástico, gerada por arco base de intrusão de incisivos inferiores. Compararam-se as tensões entre os terços radiculares de cada incisivo e, ainda, verificou-se a existência de diferenças de concentrações de tensões entre incisivos. MÉTODOS: foram confeccionados 15 arcos base de intrusão e a força de ativação foi mensurada em 50gf na região da linha média. O modelo fotoelástico foi observado em polariscópio circular, na configuração de campo escuro, e fotografado. As fotografias frontais foram analisadas e as ordens de franjas em cada região registradas. A análise de Kappa ponderado identificou a repetibilidade do método. A comparação entre as tensões foi realizada pelo teste de Kruskal-Wallis complementado com teste de Dunn com nível alfa de 5%. RESULTADOS E CONCLUSÕES: os resultados identificaram que as maiores magnitudes de tensões foram observadas nas regiões cervicais. Ao se comparar as ordens de franjas entre os dentes, as maiores magnitudes de tensões foram observadas nos incisivos centrais. Portanto, a região cervical pode estar mais sujeita a reabsorções, assim como os incisivos centrais, por concentrarem maiores tensões.OBJECTIVE: The present study is concerned with stress distribution in a photoelastic model, caused by lower incisor intrusion using utility arch. The stress levels on the radicular thirds of each lower incisors were compared and the stress concentration differences on each incisor were evaluated. METHODS: Fifteen intrusion utility arches were made up. The activation force of 50 gf was measured in the midline. The photoelastic model was observed using a circular polariscope in a dark field configuration, and, then, photographed. Frontal photographs were analyzed, and the fringe order in each region was registered. The method replicability was assessed by the Kappa weighted analysis. The comparison between

  3. Efeitos do tratamento da Classe II divisão 1 em pacientes dolicofaciais tratados segundo a Terapia Bioprogressiva (AEB cervical e arco base inferior, com ênfase no controle vertical Treatment effects on Class II division 1 high angle patients treated according to the Bioprogressive therapy (cervical headgear and lower utility arch, with emphasis on vertical control

    Directory of Open Access Journals (Sweden)

    Viviane Santini Tamburús

    2011-06-01

    Full Text Available OBJETIVO: o presente estudo investigou o controle vertical e os efeitos do tratamento ortodôntico em pacientes dolicofaciais, empregando o AEB cervical e o arco base inferior. MÉTODOS: foi realizada a avaliação cefalométrica de 26 pacientes dolicofaciais com Classe II, divisão 1, idade média de 114 meses. O tratamento ortodôntico envolveu a utilização do AEB cervical na arcada superior e arco base na arcada inferior, até a obtenção da chave de oclusão normal dos molares, e finalizado segundo a Terapia Bioprogressiva, com duração média de 56 meses. Foram avaliados os valores de FMA, SN.GoGn, ANB, Fg-S, S-FPm, comprimento maxilar, comprimento mandibular, AFP (altura facial posterior, AFA (altura facial anterior, IAF (índice de altura facial, ângulo do plano oclusal, ângulo do plano palatino, QT (queixo total, LS (lábio superior e ângulo Z. RESULTADOS: o tratamento promoveu estabilidade dos planos mandibular, oclusal e palatino. Ocorreu a correção anteroposterior das bases apicais, verificada pela redução significativa da grandeza ANB. A maxila apresentou um suave deslocamento anterior,com um suave aumento da dimensão anteroposterior.A mandíbula apresentou melhora de seu posicionamento em relação à base do crânio e sua dimensão anteroposterior aumentou significativamente. As alturas faciais posterior e anterior permaneceram em equilíbrio, não alterando significativamente o IAF. O perfil tegumentar apresentou melhora significativa. CONCLUSÃO: o tratamento realizado promoveu a correção das bases apicais, com controle dos planos horizontais e das alturas faciais, sendo efetivo no controle vertical.OBJECTIVE: This study investigated vertical control and the effects of orthodontic treatment on dolichofacial patients, using cervical headgear (CHG and lower utility arch. METHODS: Cephalometric assessment of 26 dolichofacial patients with Class II, division 1, and mean age of 114 months. Orthodontic treatment involved

  4. Ignimbritas riolíticas neoproterozoicas en la Sierra Norte de Córdoba: ¿evidencia de un arco magmático temprano en el ciclo Pampeano? Neoproterozoic rhyolite ignimbrites in the Sierra Norte de Córdoba: evidence of an early magmatic arc in the Pampean cycle?

    Directory of Open Access Journals (Sweden)

    EJ Llambías

    2003-12-01

    Full Text Available La Sierra Norte forma parte de las Sierras Pampeanas de Córdoba por lo cual las principales intrusiones graníticas y el metamorfismo están relacionadas al ciclo orogénico Pampeano. La mayor diferencia con las Sierras de Córdoba es que en Sierra Norte el grado metamórfico es bajo y las intrusiones son superficiales. La Sierra Norte está compuesta por pequeños afloramientos de metasedimentitas, plutones de granodiorita y granito y cuerpos subvolcánicos relacionados a los últimos estadios del batolito. En este trabajo describimos mantos de ignimbritas intercalados en los metaconglomerados de la Formación La Lidia. Las ignimbritas están moderadamente soldadas y está compuestas por aproximadamente 15 % de porfiroclastos de cuarzo, feldespato potásico y plagioclasa totalmente alterada. La pasta consiste de trizas vítreas devitrificadas. La edad U/Pb convencional en circones dio 584+22/-14 Ma y es interpretada como la edad de cristalización. Tanto las ignimbritas como la roca de caja han sido afectadas por un metamorfismo en facies prehnita-pumpellita que alteró la plagioclasa en zoicita, sericita y pumpellita. Las ignimbritas silícicas neoproterozoicas, conjuntamente con el batolito calcoalcalino que le suceden sugiere la existencia de un arco magmático asociado al margen continental activo de Gondwana. Este arco habría estado activo desde el Neoproterozoico hasta el Cámbrico, con una duración de más de 60 Ma. La correlación de las metasedimentitas y volcanitas neoproterozoicas con la Formación Puncoviscana es posible.The Sierra Norte belongs to the Sierras Pampeanas of Córdoba and like in the Sierras de Córdoba the main granitic intrusions, metamorphism and deformation are related to the Pampean orogenic cycle. The most important difference with Sierras de Córdoba is that Sierra Norte shows a weaker deformation and a lower grade metamorphism. Sierra Norte consists of small outcrops of metasedimentary rocks intruded by

  5. Efecto del tratamiento con leptina sobre la actividad del sistema glucosensor y la expresión de neuropéptidos implicados en la regulación de la ingesta de alimento en trucha arcoíris (Onchorhynchus mykiss

    Directory of Open Access Journals (Sweden)

    Ariel J. Aguilar

    2012-12-01

    Full Text Available La presente revisión se focaliza en el efecto modulatorio de la leptina sobre la actividad del sistema glucosensor y la expresión de neuropéptidos orexigénicosy anorexigénicos involucrados en la regulación de la ingesta de alimento en trucha arco iris. De manera similar al efecto que produce en mamíferos, la administración ICV de leptina induce cambios dosis dependiente en los parámetros relacionados con la glucosensibilidad en hipotálamo y cerebro posterior (incrementos del potencial glucolítico y glucogenogénico en coordinación con incrementos de la actividad de glucoquinasa y de los niveles de ARNm de genes involucrados en la respuesta glucosensora compatible con lo observado en peces bajo condiciones de hiperglucemia, una situación que produce anorexia. La comprensión de la especificidad de la acción de la leptina en peces es menos clara que en mamíferos. Existen evidencias que sugieren que la acción central de la leptina sobre el sistema glucosensor está relacionada con la activación de la vía JAK/STAT e IRS-PI3K. Por otro lado, el tratamiento con leptina ICV incrementa el potencial glucogenolítico en hígado, el cual podría estar asociado con incrementos de la actividad simpática, y en hipotálamo induce decrecimiento de los niveles de ARNm de NPY. Por tanto, considerando la acción orexigénica del NPY en peces, pareciera que el efecto anoréctico de la leptina puede estar mediado por la reducción de la expresión de NPY en el hipotálamo y que esos cambios pueden estar relacionados con la activación del sistema glucosensor.

  6. Avaliação da microestrutura e propriedades mecânicas de metais de solda obtidos por processos de soldagem manual e automatizado utilizado na soldagem de aço API 5L X80 Evaluation of microstructure and mechanical properties of weld metals obtained by manual and automated welding process used in the welding of API 5L X80 steel

    Directory of Open Access Journals (Sweden)

    Siderley Fernandes Albuquerque

    2011-12-01

    Full Text Available O objetivo do trabalho foi avaliar as características da zona termicamente afetada (ZTA e a microestrutura e propriedades mecânicas de metais de solda de juntas soldadas do aço API 5L X80, obtidos para quatro diferentes procedimentos de soldagem utilizando processos manuais e automatizados. Para isto, chapas do referido aço foram soldadas por processo manual ao Arco Elétrico com Eletrodo Revestido (SMAW, utilizando 473 e 673 K como temperaturas de interpasses e o eletrodo celulósico AWS E8010-G como consumível; por processo ao Arco Elétrico com Arame Tubular (FCAW robotizado, utilizando o arame AWS E71T- 1C como metal de adição e argônio com 25%CO2 como gás de proteção; por processo a Arco Elétrico com Eletrodo de Tungstênio (GTAW mecanizado na raiz da solda, usando o arame ER70S-3 e argônio como gás de proteção. As análises microestruturais foram relacionadas com os resultados de ensaios de impacto Charpy nos metais de solda e com os perfis de microdureza Vickers ao longo da junta soldada. Os resultados indicaram maiores percentuais de Ferrita Acicular e maiores valores de resistência ao impacto nos metais de solda e uma menor extensão e granulometria da ZTA, associado ao procedimento de soldagem utilizando processo automatizado com maior velocidade de soldagem.The objective of this work was to evaluate the heat affected zone characteristics and weld metals microstructure and mechanical properties of API 5L X80 steel welded joints, obtained for four different welding procedures using manual and automated processes. For this, plates of this steel were welded by manual Shielded Metal Arc Welding (SMAW process with interpasses temperatures of 473 e 673 K, and using AWS E8010-G electrode as filler metals; robotized Flux Cored Arc Welding (FCAW process, using AWS E71T-1C wire and Ar25%CO2 as consumable and mechanized Gas Tungsten Arc Welding (GTAW process, for the root pass using AWS ER70S-3 and Ar as consumable .The

  7. Carotid artery inflow in operations to correct aortic diseases (ascending, arch and descending Circulação extracorpórea pela artéria carótida comum direita na correção de doenças da aorta ascendente, arco aórtico e aorta descendente

    Directory of Open Access Journals (Sweden)

    Januário M. Souza

    2003-06-01

    Full Text Available OBJECTIVE: Femoral artery cannulation has been used as the preferred option in operations to correct ascending aorta and aortic arch aneurysms and dissections. The axillary artery is an alternative site for cannulation. We have used arterial inflow via the common carotid artery in nine patients. METHOD: Nine patients were operated on with ages ranging from 46 to 80 years (mean 62.1 ± 12.54, six were male. Four patients had true aneurysms, three had aortic dissections and two a combination of dissections and true aneurysms. Five patients had undergone previous cardiovascular operations. Deep hypothermia with circulation arrest was used in two patients and in seven, antegrade cerebral perfusion was used. RESULTS: All nine patients awoke from the operation without cerebral damage. Two patients died, one on the 7th postoperative day due to respiratory failure and the other one on the third postoperative day due to a rupture of a thoracoabdominal aortic aneurysm. CONCLUSION: The carotid artery can be a safe alternative of arterial inflow in operations to correct ascending aorta and aortic arch diseases. This strategy allows antegrade cerebral perfusion during the operation even during arch resection and reconstruction.OBJETIVO: A canulação da artéria femoral tem sido a via mais comum para o retorno arterial, nas operações para correção de aneurismas ou dissecções da aorta ascendente e ou arco aórtico. Mais recentemente, a artéria subclávia também tem sido usada. O objetivo deste trabalho é apresentar uma experiência inicial, com nove pacientes, em que se utilizou a artéria carótida comum direita para este retorno. MÉTODO: Operaram-se nove pacientes com idade de 46 - 80 anos (62,1± 12,54, seis eram do sexo masculino, quatro tinham aneurismas verdadeiros, três apresentavam dissecções e, em dois, havia combinação de dissecção com aneurisma verdadeiro. Eram cinco reoperações. Em quatro pacientes (reoperações a circula

  8. Kaubamaja "Lemon" - Arco Ärikeskus : Estonia pst. 1, Tallinn

    Index Scriptorium Estoniae

    2002-01-01

    1958. a. valminud hoone rekonstrueerimine. Projekteerija: EA Reng. Arhitekt Martin Aunin. Ehituskonstruktsioonid: Riho Märtson. Insenertehnilised osad: Karmo Pajo, Maarika Kurvits, Eha Treial. Valgusinstallatsioon: Meeli Kõiva. Kaupluste mööbel, kohtvalgustus: Priit Põldme, Ants Tolli, Ruth-Helene Kaasik, Hugo Mitt, Mart Vesker, Tarmo Piirmets. Projekt 2001, valmis 2002. I korruse põhiplaan, 4 vaadet

  9. Un arco de islas terciario en el occidente colombiano

    OpenAIRE

    Galvis Vergara, Jaime

    2012-01-01

    Dentro de la Geología Colombiana es un detalle interesante que se presenten batolitos y stocks de rocas ígneas ácidas al occidente de la falla de Romeral y de las rocas oceánicas de la Cordillera Occidental.La explicación del magmatismo que origino los batolitos de Acandí-Mande y otros cuerpos intrusivos al Sur del país, lógicamente tiene que buscarse en un choque de placas al occidente a una distancia adecuadamente grande de la línea magmática Acandí-Mande, por lo quese buscaron datos y evid...

  10. Effects of diets with soybean meal on the growth, digestibility, Phosphorus and Nitrogen excretion of juvenile rainbow trout Oncorhynchus mykiss Efectos de dietas con harina de soya en el crecimiento, digestibilidad, excreción de fósforo y nitrógeno de juveniles de trucha arco iris Oncorhynchus mykiss

    Directory of Open Access Journals (Sweden)

    Carlos Agustín Cruz Castro

    2011-08-01

    Full Text Available A feeding trial was performed to evaluate the inclusion of high levels of soybean meal as a substitute for fishmeal in diets for juvenile rainbowtrout and determine the phosphorus and nitrogen excretion. Fishmeal was replaced with soybean meal at levels of 50,75 and 100 % with an inclusion of 0.8 g of phytase per kg of diet (g kg-1, whereas a diet with 100% substitution was used without phytase. A commercial diet and one with 100% of fishmeal were used as controls. Diets were fed to triplicate groups of juveniles (4.12 ± 0.7 g, mean + standard deviation for a period of 50 days, and growth performance, P and N excretion and protein digestibility were determined at the end of this period. Data were analyzed with one-way ANOVA. The results showed that fish growth decreased when 100% of substitution was used, but diet with 75% of soybean meal did not affect growth. In addition, excretion values of P and N at this level of substitution were lowerthan those of the fish fed the control diets. The data suggest that diet with 75% soybean meal and 25% fishmeal might be used under practical conditions, as the growth performance observed on the juveniles fed such diet was similarto those offish fed the commercial diet and the nutrient loading was reduced.Se realizó una prueba de alimentación para evaluar la inclusión de altos niveles de harina de soya como sustituto de la harina de pescado en dietas para juveniles de trucha arco iris y determinar la excreción de fósforo y nitrógeno. La harina de pescado se sustituyó en niveles de 50, 75 y 100% con la inclusión de 0.8 g de fitasa por kg de dieta (g kg-1, así como una dieta con 100% de sustitución sin fitasa fue utilizada. Una dieta comercial y una con 100% de harina de pescado se utilizaron como controles. Las dietas se ofrecieron a grupos de juveniles portriplicado de juveniles (4.12 ± 0.7 g, promedio + desviación estándar por un periodo de 50 días. Al finalizar este periodo, se determinó el

  11. Correlação entre padrão facial e relação sagital entre os arcos dentários no estágio de dentadura decídua: considerações epidemiológicas Correlation between facial pattern and sagittal relationship between dental arches in deciduous dentition: epidemiological considerations

    Directory of Open Access Journals (Sweden)

    Omar Gabriel da Silva Filho

    2008-02-01

    Full Text Available OBJETIVO: A inter-relação oclusão e morfologia facial é fundamental para o diagnóstico e planejamento em ortodontia, bem como para determinação do prognóstico de tratamento. De um modo geral, a relação sagital entre os arcos dentários (Classe tende a refletir o comportamento sagital do esqueleto facial (Padrão. O presente trabalho avalia a correlação entre as características morfológicas sagitais da face (Padrão e da oclusão (Classe no estágio de dentadura decídua. METODOLOGIA: A amostra foi composta por 2009 crianças, entre 03 e 06 anos de idade, no período de dentadura decídua completa, de 20 pré-escolas do Município de Bauru - SP. Os resultados demonstraram uma correlação estreita entre o Padrão facial e a Classe. No Padrão I predominou a Classe I (62,99%, seguida pela Classe II (35,82% e Classe III (1,18%. No Padrão II, a Classe II foi predominante (81,35% acompanhada de uma incidência baixa de Classe I (18,64%. No Padrão III, a Classe III estava presente em 50% das crianças, seguida pela Classe I, em 48,64%, e Classe II, em 1,35%. RESULTADOS: A expectativa se comprovou. Há uma tendência da Classe acompanhar o Padrão, desde o estágio de dentadura decídua. Isso foi mais explícito no Padrão II. Os resultados também esclarecem que a oclusão guarda alguma independência em relação ao Padrão. CONCLUSÃO: A maior heterogeneidade na distribuição das Classes ficou para os Padrões I e III. No Padrão II, as Classes se comportaram de forma mais homogênea, com mais de 80% das crianças exibindo Classe II.The interrelationship between occlusion and facial morphology is fundamental for diagnosis and planning in Orthodontics. In general, the sagittal relationship between dental arches (Class tends to reflect the sagittal position of facial skeleton (Pattern. This current paper assesses the correlation between sagittal facial morphological characteristics (Pattern and occlusion (Class in deciduous dentition

  12. Análise morfológica do arco superior de portadores de fissura labiopalatal submetidos a diferentes protocolos de expansão rápida maxilar: avaliação das alterações maxilares Morphological analysis of the maxillary arch in patients with cleft lip and palate submitted to different protocols of rapid maxillary expansion: maxillary alterations evaluation

    Directory of Open Access Journals (Sweden)

    Maíra Massuia de Souza

    2009-10-01

    Full Text Available INTRODUÇÃO: em portadores de malformações labiopalatais, a boa conformação do arco superior constitui um dos principais requisitos para a obtenção de uma oclusão adequada e para o aperfeiçoamento estético e funcional. Para tanto, a expansão ortopédica da maxila é frequentemente necessária, uma vez que é alta a incidência de colapso dos segmentos. OBJETIVOS: analisar, por meio de modelos de gesso, as dimensões do arco superior de 15 portadores de fissura transforame incisivo unilateral, com deficiências transversal e anteroposterior da maxila, submetidos à expansão com dois diferentes protocolos de ativação. MÉTODOS: um grupo foi submetido à Expansão Rápida da Maxila (ERM com protocolo de ativação convencional (Grupo 1, enquanto no outro grupo foi utilizado o protocolo de ativação preconizado por Liou e Tsai em 2005, com expansões e contrações alternadas (Grupo 2, sendo ambos submetidos posteriormente à protração maxilar com máscara de tração reversa. Os modelos foram obtidos em dois momentos: antes da cimentação do disjuntor do tipo Haas modificado (T1 e após 24 semanas de tratamento (T2. As distâncias transversais entre os primeiros pré-molares superiores (região anterior e a distância entre os primeiros molares superiores (região posterior foram registradas com um paquímetro digital. Os dados obtidos foram submetidos ao teste t de Student. RESULTADOS E CONCLUSÕES: os dois protocolos de ativação mostraram-se igualmente efetivos na expansão maxilar, não havendo diferença entre os grupos em relação ao aumento transversal obtido.INTRODUCTION: Harmonious conformation of the maxillary arch in patients with cleft lip and palate is one of the main requirements for achievement of adequate occlusion and for esthetic and functional improvement. For this purpose, orthopedic maxillary expansion is often required due to the high frequency of the segments collapse. AIM: This study aimed to evaluate the

  13. Petrología del magmatismo de arco pre-deformacional en el cordón de El Realito y la zona norte del plutón La Escalerilla. Sierra de San Luis Petrology of the pre-deformational arc magmatism in the Cordón de El Realito and in the northern zone of the La Escalerilla pluton, Sierra de San Luis

    Directory of Open Access Journals (Sweden)

    N. Brogioni

    2005-09-01

    Full Text Available Los granitoides de arco pre-deformacionales de San Luis son asignados al Cámbrico tardío-Ordovícico temprano, y conforman una serie de extensos afloramientos en el cordón de El Realito y en la zona norte del plutón La Escalerilla. El magmatismo es calcoalcalino de alto K y se aloja en metasedimentitas regionales de grado bajo a medio. Está representado por una secuencia de arco más antigua, constituida por granodioritas, tonalitas y dioritas con Pl+Bt+Ep±Hbl±Kf, metaluminosas, portadoras de enclaves gábricos y monzodioríticos, correlacionable con la secuencia metaluminosa de las sierras de Chepes y Los Llanos (La Rioja. La serie más joven es colisional, monzogranítica, leucocrática y peraluminosa, con Kf+Pl+Ms±Bt±Grt, de características afines a las de los monzogranitos y leucogranitos de dos micas, y una tendencia evolutiva propia de los granitoides peraluminosos félsicos. La serie monzogranítica no parece resultar del fraccionamiento extremo de la secuencia metaluminosa sino que derivaría de la fusión por deshidratación de metapelitas muscovíticas y grauvacas, aunque algunas particularidades geoquímicas de La Escalerilla, entre ellas la abundancia y evolución de las HREE, podrían atribuirse a diferencias litológicas en la zona de proveniencia del fundido. Los fundidos se distinguen claramente, en ambos casos, de aquéllos que dieron origen a las leucogranodioritas sincinemáticas débilmente peraluminosas que afloran en el complejo basamento oriental de la sierra, portadoras de la misma asociación mineral. La deformación famatiniana modificó las fábricas y en menor proporción el quimismo de ambas secuencias, en particular los términos más básicos de la serie de arco, incrementando su peraluminosidad y la dispersión de las tendencias evolutivas.The pre-deformational Late Cambrian to Early Ordovician arc-magmatism of the Sierra de San Luis forms several outcrops of which Cordón de El Realito and La

  14. Process Accounting

    OpenAIRE

    Gilbertson, Keith

    2002-01-01

    Standard utilities can help you collect and interpret your Linux system's process accounting data. Describes the uses of process accounting, standard process accounting commands, and example code that makes use of process accounting utilities.

  15. Primary Processing

    NARCIS (Netherlands)

    Mulder, W.J.; Harmsen, P.F.H.; Sanders, J.P.M.; Carre, P.; Kamm, B.; Schoenicke, P.

    2012-01-01

    Primary processing of oil-containing material involves pre-treatment processes, oil recovery processes and the extraction and valorisation of valuable compounds from waste streams. Pre-treatment processes, e.g. thermal, enzymatic, electrical and radio frequency, have an important effect on the oil r

  16. Elektrokemiske Processer

    DEFF Research Database (Denmark)

    Bech-Nielsen, Gregers

    1997-01-01

    Electrochemical processes in: Power sources, Electrosynthesis, Corrosion.Pourbaix-diagrams.Decontamination of industrial waste water for heavy metals.......Electrochemical processes in: Power sources, Electrosynthesis, Corrosion.Pourbaix-diagrams.Decontamination of industrial waste water for heavy metals....

  17. Anaerobic Process.

    Science.gov (United States)

    Yang, Qian; Ju, Mei-Ting; Li, Wei-Zun; Liu, Le; Wang, Yan-Nan; Chang, Chein-Chi

    2016-10-01

    A review of the literature published in 2015 on the focus of Anaerobic Process. It is divided into the following sections. Pretreatment Organic waste Multiple-stage co-digestion Process Methodology and Technology. PMID:27620085

  18. Evidencias de procesos de fraccionamiento y mezcla de magmas en el Complejo Intrusivo Las Angosturas, Sistema de Famatina Evidence for fractionation and mixing processes in Las Angosturas Intrusive Complex, Famatina System, Argentina

    Directory of Open Access Journals (Sweden)

    Clara E. Cisterna

    2004-03-01

    Full Text Available El Complejo Intrusivo Las Angosturas constituye el norte de la sierra de Narváez, en el Sistema de Famatina, noroeste de Argentina. Se trata de granitoides de edad ordovícica inferior cuya composición varía de tonalitas y leucotonalitas a granodioritas y monzogranitos, con biotita y hornblenda. En estas rocas se destaca la abundancia de enclaves de composición granodiorítica a tonalítica y diorítica a basáltica; cuya morfología, dimensiones y relaciones con el encajante es variable e indicativa de procesos de interacción de magmas de composición contrastada. Los datos petrográficos, mineralógicos y químicos permiten indicar como mecanismo más adecuado para la evolución de la serie de granitoides una diferenciación por cristalización fraccionada juntamente con un proceso de mezcla, definido por la interacción de un magma granodiorítico con un fundido básico, de origen profundo. El emplazamiento de los granitoides se produce en un arco magmático activo, conocido como arco famatiniano, al igual que para otras intrusiones de similar posición estratigráfica en el noroeste de Argentina.Las Angosturas Intrusive Complex forms the northern segment of the sierra de Narváez, in the Famatina System of north-western Argentina. It consists of Lower Ordovician granitoids whose composition varies from tonalite and leucotonalite to granodiorite and monzogranite, with biotite and hornblende as the main mafic minerals. There remarkable abundance of granodioritic to tonalitic and dioritic to basic enclaves, whose morphology, size and relationships with the are variable is indicative of interactive processes between magmas of differing compositions. Petrographical, mineralogical and chemical studies suggest that the most appropriate mechanism for the evolution of the granitod series is one of differentiation by crystal fractionation, together with a process of mixing, involving the interaction between a granodioritic magma with a basic melt

  19. Process mining

    DEFF Research Database (Denmark)

    van der Aalst, W.M.P.; Rubin, V.; Verbeek, H.M.W.;

    2010-01-01

    Process mining includes the automated discovery of processes from event logs. Based on observed events (e.g., activities being executed or messages being exchanged) a process model is constructed. One of the essential problems in process mining is that one cannot assume to have seen all possible...... behavior. At best, one has seen a representative subset. Therefore, classical synthesis techniques are not suitable as they aim at finding a model that is able to exactly reproduce the log. Existing process mining techniques try to avoid such “overfitting” by generalizing the model to allow for more...

  20. Data processing

    CERN Document Server

    Fry, T F

    2013-01-01

    Data Processing discusses the principles, practices, and associated tools in data processing. The book is comprised of 17 chapters that are organized into three parts. The first part covers the characteristics, systems, and methods of data processing. Part 2 deals with the data processing practice; this part discusses the data input, output, and storage. The last part discusses topics related to systems and software in data processing, which include checks and controls, computer language and programs, and program elements and structures. The text will be useful to practitioners of computer-rel

  1. Amanzi: An Open-Source Multi-process Simulator for Environmental Applications

    Science.gov (United States)

    Moulton, J. D.; Molins, S.; Johnson, J. N.; Coon, E.; Lipnikov, K.; Day, M.; Barker, E.

    2014-12-01

    The Advanced Simulation Capabililty for Environmental Management (ASCEM) program is developing an approach and open-source tool suite for standardized risk and performance assessments at legacy nuclear waste sites. These assessments begin with simplified models, and add geometric and geologic complexity as understanding is gained. The Platform toolsets (Akuna) generates these conceptual models and Amanzi provides the computational engine to perform the simulations, returning the results for analysis and visualization. In this presentation we highlight key elements of the design, algorithms and implementations used in Amanzi. In particular, the hierarchical and modular design is aligned with the coupled processes being sumulated, and naturally supports a wide range of model complexity. This design leverages a dynamic data manager and the synergy of two graphs (one from the high-level perspective of the models the other from the dependencies of the variables in the model) to enable this flexible model configuration at run time. Moreover, to model sites with complex hydrostratigraphy, as well as engineered systems, we are developing a dual unstructured/structured capability. Recently, these capabilities have been collected in a framework named Arcos, and efforts have begun to improve interoperability between the unstructured and structured AMR approaches in Amanzi. To leverage a range of biogeochemistry capability from the community (e.g., CrunchFlow, PFLOTRAN, etc.), a biogeochemistry interface library was developed called Alquimia. To ensure that Amanzi is truly an open-source community code we require a completely open-source tool chain for our development. We will comment on elements of this tool chain, including the testing and documentation development tools such as docutils, and Sphinx. Finally, we will show simulation results from our phased demonstrations, including the geochemically complex Savannah River F-Area seepage basins.

  2. Stochastic processes

    CERN Document Server

    Parzen, Emanuel

    2015-01-01

    Well-written and accessible, this classic introduction to stochastic processes and related mathematics is appropriate for advanced undergraduate students of mathematics with a knowledge of calculus and continuous probability theory. The treatment offers examples of the wide variety of empirical phenomena for which stochastic processes provide mathematical models, and it develops the methods of probability model-building.Chapter 1 presents precise definitions of the notions of a random variable and a stochastic process and introduces the Wiener and Poisson processes. Subsequent chapters examine

  3. Data processing

    International Nuclear Information System (INIS)

    The 1988 progress report of the Data Processing laboratory (Polytechnic School, France), is presented. The laboratory research fields are: the semantics, the tests and the semantic analysis of the codes, the formal calculus, the software applications, the algorithms, the neuron networks and VLSI (Very Large Scale Integration). The investigations concerning the polynomial rings are performed by means of the standard basis approach. Among the research topics, the Pascal codes, the parallel processing, the combinatorial, statistical and asymptotic properties of the fundamental data processing tools, the signal processing and the pattern recognition. The published papers, the congress communications and the thesis are also included

  4. Kreative processer

    DEFF Research Database (Denmark)

    Schoch, Odilo

    2010-01-01

    Explaining the way of understanding processes and the development of visionary goals - linked to the daily business in archtiectural practise.......Explaining the way of understanding processes and the development of visionary goals - linked to the daily business in archtiectural practise....

  5. Peat Processing

    Science.gov (United States)

    1986-01-01

    Humics, Inc. already had patented their process for separating wet peat into components and processing it when they consulted NERAC regarding possible applications. The NERAC search revealed numerous uses for humic acid extracted from peat. The product improves seed germination, stimulates root development, and improves crop yields. There are also potential applications in sewage disposal and horticultural peat, etc.

  6. Sustainable processing

    DEFF Research Database (Denmark)

    Kristensen, Niels Heine

    2004-01-01

    Kristensen_NH and_Beck A: Sustainable processing. In Otto Schmid, Alexander Beck and Ursula Kretzschmar (Editors) (2004): Underlying Principles in Organic and "Low-Input Food" Processing - Literature Survey. Research Institute of Organic Agriculture FiBL, CH-5070 Frick, Switzerland. ISBN 3-906081-58-3...

  7. Design Processes

    DEFF Research Database (Denmark)

    Ovesen, Nis

    2009-01-01

    Inspiration for most research and optimisations on design processes still seem to focus within the narrow field of the traditional design practise. The focus in this study turns to associated businesses of the design professions in order to learn from their development processes. Through intervie...

  8. Process automation

    International Nuclear Information System (INIS)

    Process automation technology has been pursued in the chemical processing industries and to a very limited extent in nuclear fuel reprocessing. Its effective use has been restricted in the past by the lack of diverse and reliable process instrumentation and the unavailability of sophisticated software designed for process control. The Integrated Equipment Test (IET) facility was developed by the Consolidated Fuel Reprocessing Program (CFRP) in part to demonstrate new concepts for control of advanced nuclear fuel reprocessing plants. A demonstration of fuel reprocessing equipment automation using advanced instrumentation and a modern, microprocessor-based control system is nearing completion in the facility. This facility provides for the synergistic testing of all chemical process features of a prototypical fuel reprocessing plant that can be attained with unirradiated uranium-bearing feed materials. The unique equipment and mission of the IET facility make it an ideal test bed for automation studies. This effort will provide for the demonstration of the plant automation concept and for the development of techniques for similar applications in a full-scale plant. A set of preliminary recommendations for implementing process automation has been compiled. Some of these concepts are not generally recognized or accepted. The automation work now under way in the IET facility should be useful to others in helping avoid costly mistakes because of the underutilization or misapplication of process automation. 6 figs

  9. Organizing Process

    DEFF Research Database (Denmark)

    Hull Kristensen, Peer; Bojesen, Anders

    This paper invites to discuss the processes of individualization and organizing being carried out under what we might see as an emerging regime of change. The underlying argumentation is that in certain processes of change, competence becomes questionable at all times. The hazy characteristics...... of this regime of change are pursued through a discussion of competencies as opposed to qualifications illustrated by distinct cases from the Danish public sector in the search for repetitive mechanisms. The cases are put into a general perspective by drawing upon experiences from similar change processes...

  10. Grants Process

    Science.gov (United States)

    The NCI Grants Process provides an overview of the end-to-end lifecycle of grant funding. Learn about the types of funding available and the basics for application, review, award, and on-going administration within the NCI.

  11. Membrane Processes.

    Science.gov (United States)

    Pellegrin, Marie-Laure; Sadler, Mary E; Greiner, Anthony D; Aguinaldo, Jorge; Min, Kyungnan; Zhang, Kai; Arabi, Sara; Burbano, Marie S; Kent, Fraser; Shoaf, Robert

    2015-10-01

    This review, for literature published in 2014, contains information related to membrane processes for municipal and industrial applications. This review is a subsection of the Treatment Systems section of the annual Water Environment Federation literature review and covers the following topics: pretreatment, membrane bioreactor (MBR) configuration, design, nutrient removal, operation, industrial treatment, fixed film and anaerobic membrane systems, reuse, microconstituents removal, membrane technology advances, membrane fouling, and modeling. Other sub-sections of the Treatment Systems section that might relate to this literature review include: Biological Fixed-Film Systems, Activated Sludge and Other Aerobic Suspended Culture Processes, Anaerobic Processes, Water Reclamation and Reuse. The following sections might also have related information on membrane processes: Industrial Wastes, Hazardous Wastes, and Fate and Effects of Pollutants. PMID:26420079

  12. Membrane Processes.

    Science.gov (United States)

    Pellegrin, Marie-Laure; Burbano, Marie S; Sadler, Mary E; Diamond, Jason; Baker, Simon; Greiner, Anthony D; Arabi, Sara; Wong, Joseph; Doody, Alexandra; Padhye, Lokesh P; Sears, Keith; Kistenmacher, Peter; Kent, Fraser; Tootchi, Leila; Aguinaldo, Jorge; Saddredini, Sara; Schilling, Bill; Min, Kyungnan; McCandless, Robert; Danker, Bryce; Gamage, Neranga P; Wang, Sunny; Aerts, Peter

    2016-10-01

    This review, for literature published in 2015, contains information related to membrane processes for municipal and industrial applications. This review is a subsection of the Treatment Systems section of the annual Water Environment Federation literature review and covers the following topics: pretreatment, membrane bioreactor (MBR) configuration, design, nutrient removal, operation, industrial treatment, anaerobic membrane systems, reuse, microconstituents removal, membrane technology advances, membrane fouling, and modeling. Other sub-sections of the Treatment Systems section that might relate to this literature review include: Biological Fixed-Film Systems, Activated Sludge and Other Aerobic Suspended Culture Processes, Anaerobic Processes, Water Reclamation and Reuse. The following sections might also have related information on membrane processes: Industrial Wastes, Hazardous Wastes, and Fate and Effects of Pollutants. PMID:27620084

  13. Electrochemical Processes

    DEFF Research Database (Denmark)

    Bech-Nielsen, Gregers

    1997-01-01

    The notes describe in detail primary and secondary galvanic cells, fuel cells, electrochemical synthesis and electroplating processes, corrosion: measurments, inhibitors, cathodic and anodic protection, details of metal dissolution reactions, Pourbaix diagrams and purification of waste water from...

  14. Sewer Processes

    DEFF Research Database (Denmark)

    Hvitved-Jacobsen, Thorkild; Vollertsen, Jes; Nielsen, Asbjørn Haaning

    microbial and chemical processes and demonstrates how this knowledge can be applied for the design, operation, and the maintenance of wastewater collection systems. The authors add chemical and microbial dimensions to the design and management of sewer networks with an overall aim of improved sustainability......Since the first edition was published over a decade ago, advancements have been made in the design, operation, and maintenance of sewer systems, and new problems have emerged. For example, sewer processes are now integrated in computer models, and simultaneously, odor and corrosion problems caused...... by hydrogen sulfide and other volatile organic compounds, as well as other potential health issues, have caused environmental concerns to rise. Reflecting the most current developments, Sewer Processes: Microbial and Chemical Process Engineering of Sewer Networks, Second Edition, offers the reader updated...

  15. Processing Proteases

    DEFF Research Database (Denmark)

    Ødum, Anders Sebastian Rosenkrans

    Processing proteases are proteases which proteolytically activate proteins and peptides into their biologically active form. Processing proteases play an important role in biotechnology as tools in protein fusion technology. Fusion strategies where helper proteins or peptide tags are fused...... to the protein of interest are an elaborate method to optimize expression or purification systems. It is however critical that fusion proteins can be removed and processing proteases can facilitate this in a highly specific manner. The commonly used proteases all have substrate specificities to the N...... of few known proteases to have substrate specificity for the C-terminal side of the scissile bond. LysN exhibits specificity for lysine, and has primarily been used to complement trypsin in to proteomic studies. A working hypothesis during this study was the potential of LysN as a processing protease...

  16. Renewal processes

    CERN Document Server

    Mitov, Kosto V

    2014-01-01

    This monograph serves as an introductory text to classical renewal theory and some of its applications for graduate students and researchers in mathematics and probability theory. Renewal processes play an important part in modeling many phenomena in insurance, finance, queuing systems, inventory control and other areas. In this book, an overview of univariate renewal theory is given and renewal processes in the non-lattice and lattice case are discussed. A pre-requisite is a basic knowledge of probability theory.

  17. Extraction process

    International Nuclear Information System (INIS)

    A process is described for extracting at least two desired constituents from a mineral, using a liquid reagent which produces the constituents, or compounds thereof, in separable form and independently extracting those constituents, or compounds. The process is especially valuable for the extraction of phosphoric acid and metal values from acidulated phosphate rock, the slurry being contacted with selective extractants for phosphoric acid and metal (e.g. uranium) values. In an example, uranium values are oxidized to uranyl form and extracted using an ion exchange resin. (U.K.)

  18. Offshoring Process

    DEFF Research Database (Denmark)

    Slepniov, Dmitrij; Sørensen, Brian Vejrum; Katayama, Hiroshi

    2011-01-01

    of globalisation. Yet there are clear differences in how offshoring is conducted in Denmark and Japan. The main differences are outlined in a framework and explained employing cultural variables. The findings lead to a number of propositions suggesting that the process of offshoring is not simply a uniform......The purpose of this chapter is to contribute to the knowledge on how production offshoring and international operations management vary across cultural contexts. The chapter attempts to shed light on how companies approach the process of offshoring in different cultural contexts. In order...

  19. BENTONITE PROCESSING

    Directory of Open Access Journals (Sweden)

    Anamarija Kutlić

    2012-07-01

    Full Text Available Bentonite has vide variety of uses. Special use of bentonite, where its absorbing properties are employed to provide water-tight sealing is for an underground repository in granites In this paper, bentonite processing and beneficiation are described.

  20. Causticizing process

    Energy Technology Data Exchange (ETDEWEB)

    Engdal, H.

    1987-03-10

    This invention seeks to provide a method in which the soda lye obtained as a result of cellulose cooking process and unslaked lime are used for producing white liquor which can be re-used in the cooking process. In this method, the heat released by the slaking of lime with soda lye is recovered by a high pressure slaking process wherein the heat is transferred, either to the steam separating from the lye, which steam is then led to the desired application, or to some other medium to be heated. The invention is characterized in that the soda lye to be causticized is divided into two parts, one of which is used for the slaking of lime by adding to it all the unslaked lime needed for the causticizing process, and that, following slaking, the two volumes are brought together for the actual causticizing reaction involving the total amount of lye needed. This invention provides the advantage that the amount of lye needed is smaller, and so the temperature can be increased.

  1. Innovation process

    DEFF Research Database (Denmark)

    Kolodovski, A.

    2006-01-01

    Purpose of this report: This report was prepared for RISO team involved in design of the innovation system Report provides innovation methodology to establish common understanding of the process concepts and related terminology The report does not includeRISO- or Denmark-specific cultural, econom...

  2. A mathematical approach based on finite differences method for analyzing the temperature field in arc welding of stainless steel thin sheets; Desarrollo de un modelo matematico de diferencias finitas para el analisis del campo de temperaturas en la soldadura por arco de chapas finas de acero inoxidable

    Energy Technology Data Exchange (ETDEWEB)

    Martinez-Conesa, E.J.; Estrems, M.; Miguel, V.

    2010-07-01

    This work develops a finite difference method to evaluate the temperature field in the heat affected zone in butt welding applied to AISI 304 stainless steel thin sheet by GTAW process. A computer program has been developed and implemented by Visual Basic for Applications (VBA) in MS-Excel spreadsheet. The results that are obtained using the numerical application foresee the thermal behaviour of arc welding processes. An experimental methodology has been developed to validate the mathematical model that allows to measure the temperature in several points close to the weld bead. The methodology is applied to a stainless steel sheet with a thickness lower than 3 mm, although may be used for other steels and welding processes as MIG/MAG and SMAW. The data which has been obtained from the experimental procedure have been used to validate the results that have been calculated by the finite differences numerical method. The mathematical model adjustment has been carried out taking into account the experimental results. The differences found between the experimental and theoretical approaches are due to the convection and radiation heat losses, which have not been considered in the simulation model.With this simple model, the designer will be able to calculate the thermal cycles that take place in the process as well as to predict the temperature field in the proximity of the weld bead. (Author). 18 refs.

  3. Boolean process

    Institute of Scientific and Technical Information of China (English)

    闵应骅; 李忠诚; 赵著行

    1997-01-01

    Boolean algebra successfully describes the logical behavior of a digital circuit, and has been widely used in electronic circuit design and test With the development of high speed VLSIs it is a drawback for Boolean algebra to be unable to describe circuit timing behavior. Therefore a Boolean process is defined as a family of Boolean van ables relevant to the time parameter t. A real-valued sample of a Boolean process is a waveform. Waveform functions can be manipulated formally by using mathematical tools. The distance, difference and limit of a waveform polynomial are defined, and a sufficient and necessary condition of the limit existence is presented. Based on this, the concept of sensitization is redefined precisely to demonstrate the potential and wide application possibility The new definition is very different from the traditional one, and has an impact on determining the sensitizable paths with maximum or minimum length, and false paths, and then designing and testing high performance circuits

  4. Restoration Process

    Science.gov (United States)

    1979-01-01

    In the accompanying photos, a laboratory technician is restoring the once-obliterated serial number of a revolver. The four-photo sequence shows the gradual progression from total invisibility to clear readability. The technician is using a new process developed in an applications engineering project conducted by NASA's Lewis Research Center in conjunction with Chicago State University. Serial numbers and other markings are frequently eliminated from metal objects to prevent tracing ownership of guns, motor vehicles, bicycles, cameras, appliances and jewelry. To restore obliterated numbers, crime laboratory investigators most often employ a chemical etching technique. It is effective, but it may cause metal corrosion and it requires extensive preparatory grinding and polishing. The NASA-Chicago State process is advantageous because it can be applied without variation to any kind of metal, it needs no preparatory work and number recovery can be accomplished without corrosive chemicals; the liquid used is water.

  5. Ceramic Processing

    Energy Technology Data Exchange (ETDEWEB)

    EWSUK,KEVIN G.

    1999-11-24

    Ceramics represent a unique class of materials that are distinguished from common metals and plastics by their: (1) high hardness, stiffness, and good wear properties (i.e., abrasion resistance); (2) ability to withstand high temperatures (i.e., refractoriness); (3) chemical durability; and (4) electrical properties that allow them to be electrical insulators, semiconductors, or ionic conductors. Ceramics can be broken down into two general categories, traditional and advanced ceramics. Traditional ceramics include common household products such as clay pots, tiles, pipe, and bricks, porcelain china, sinks, and electrical insulators, and thermally insulating refractory bricks for ovens and fireplaces. Advanced ceramics, also referred to as ''high-tech'' ceramics, include products such as spark plug bodies, piston rings, catalyst supports, and water pump seals for automobiles, thermally insulating tiles for the space shuttle, sodium vapor lamp tubes in streetlights, and the capacitors, resistors, transducers, and varistors in the solid-state electronics we use daily. The major differences between traditional and advanced ceramics are in the processing tolerances and cost. Traditional ceramics are manufactured with inexpensive raw materials, are relatively tolerant of minor process deviations, and are relatively inexpensive. Advanced ceramics are typically made with more refined raw materials and processing to optimize a given property or combination of properties (e.g., mechanical, electrical, dielectric, optical, thermal, physical, and/or magnetic) for a given application. Advanced ceramics generally have improved performance and reliability over traditional ceramics, but are typically more expensive. Additionally, advanced ceramics are typically more sensitive to the chemical and physical defects present in the starting raw materials, or those that are introduced during manufacturing.

  6. O processo de enfermagem em uma unidade de queimados: análise e reformulação fundamentadas na pedagogia da problematização El proceso de enfermería en una unidad de quemados: análisis y reformulación fundamentadas en la pedagogía de la problematización Nursing process in an unit for burnt patients: analysis and reformulation based on the problem raising pedagogy

    Directory of Open Access Journals (Sweden)

    Lídia Aparecida Rossi

    1995-07-01

    Full Text Available O presente estudo constitui na elaboração e aplicação de um plano de atividade educativa para enfermeiras de uma Unidade de Queimados, com o objetivo de analisar e reformular a prática do processo de enfermagem nesta unidade. O "Esquema do Arco" proposto por Charles MAGUEREZ8 foi empregado como guia, norteando a escolha em e a aplicação das atividades de ensino-aprendizagem implantados neste plano de atividade educativa. Concluímos que esse esquema pedagógico possibilita a ocorrência de transformações na prática do processo de enfermagem e que esta nova realidade já nos mostra a necessidade de outras transformações.El presente estudio consistió en la elaboración y aplicación de un plan de actividades educativas para enfermeros de una Unidad de Quemados, con el objetivo de analizar y reformular la practica del proceso de enfermería en esa unidad. El "Esquema del Arco" propuesto por Charles MAGUEREZ8, fue adaptado como guía, el cual orientó en la escogencia y aplicación de las actividades de enseñanza-aprendizaje, implementados en este plan de actividades educativas. Concluimos que este esquema pedagógico posibilitó el surgimiento de estas transformaciones en la práctica del proceso de enfermería en esta unidad, y que esta nueva realidad demuestra la necesidad de otras transformaciones.The present study aims at elaborating and applying an education plan for nurses in a Unit for Burnt Patients, with the proposal of analyzing and reformulating the practice of the nursing process in this service. The framework proposed by Charles MAGUEREZ8 made possible a substantial improvement in the nursing process in this service, and that this new reality claims for further studies.

  7. Lithospheric processes

    Energy Technology Data Exchange (ETDEWEB)

    Baldridge, W. [and others

    2000-12-01

    The authors used geophysical, geochemical, and numerical modeling to study selected problems related to Earth's lithosphere. We interpreted seismic waves to better characterize the thickness and properties of the crust and lithosphere. In the southwestern US and Tien Shari, crust of high elevation is dynamically supported above buoyant mantle. In California, mineral fabric in the mantle correlate with regional strain history. Although plumes of buoyant mantle may explain surface deformation and magmatism, our geochemical work does not support this mechanism for Iberia. Generation and ascent of magmas remains puzzling. Our work in Hawaii constrains the residence of magma beneath Hualalai to be a few hundred to about 1000 years. In the crust, heat drives fluid and mass transport. Numerical modeling yielded robust and accurate predictions of these processes. This work is important fundamental science, and applies to mitigation of volcanic and earthquake hazards, Test Ban Treaties, nuclear waste storage, environmental remediation, and hydrothermal energy.

  8. Image Processing

    Science.gov (United States)

    1993-01-01

    Electronic Imagery, Inc.'s ImageScale Plus software, developed through a Small Business Innovation Research (SBIR) contract with Kennedy Space Flight Center for use on space shuttle Orbiter in 1991, enables astronauts to conduct image processing, prepare electronic still camera images in orbit, display them and downlink images to ground based scientists for evaluation. Electronic Imagery, Inc.'s ImageCount, a spin-off product of ImageScale Plus, is used to count trees in Florida orange groves. Other applications include x-ray and MRI imagery, textile designs and special effects for movies. As of 1/28/98, company could not be located, therefore contact/product information is no longer valid.

  9. Crystallization process

    Science.gov (United States)

    Adler, Robert J.; Brown, William R.; Auyang, Lun; Liu, Yin-Chang; Cook, W. Jeffrey

    1986-01-01

    An improved crystallization process is disclosed for separating a crystallizable material and an excluded material which is at least partially excluded from the solid phase of the crystallizable material obtained upon freezing a liquid phase of the materials. The solid phase is more dense than the liquid phase, and it is separated therefrom by relative movement with the formation of a packed bed of solid phase. The packed bed is continuously formed adjacent its lower end and passed from the liquid phase into a countercurrent flow of backwash liquid. The packed bed extends through the level of the backwash liquid to provide a drained bed of solid phase adjacent its upper end which is melted by a condensing vapor.

  10. Welding process

    International Nuclear Information System (INIS)

    This invention relates to a process for making a large number of weld beads as separate contours, spaced out from each other, by means of an automatic welding head. Under this invention, after striking the arc in the prescribed manner and positioning the torch on the first contour to be welded and having made the first weld bead, the torch current is reduced to bring about a part fade out of the arc. The torch is then moved to the starting position on a second contour to be welded where a static timed pre-fusion is effected by resumption of the welding current to carry out the second weld bead by following the second welding contour in the same manner and so forth. The invention particularly applies to the welding of tube ends to a tube plate

  11. Metallurgical transformations of high strength low alloys steels 450 EMZ type II in the heat affected zone during multipass submerged arc welding; Proceso metalurgicos de aceros microaleados de alta resistencia 450 EMZ tipo II en la zona afectada termicamente debido al efecto mulipasada en soldaduras por arco sumergido

    Energy Technology Data Exchange (ETDEWEB)

    Gonzalez-Palma, R.; Suarez-Bermejo, J. C.; Vicario, F. J.; Munoz, A.

    2006-07-01

    A considerable number of crack tip opening displacement tests in the heat affected zone (HAZ) of multipass welds. performed in accordance with standards BS 5762 and EEMUA, are rejected since the crack is not inside the coarse grain region at 0.5 mm from the fusion border, as well as the quantity of the crack length in percentage, that the crack goes through the inter critical region instead of in the grain coarse region as it would correspond. This circumstance make advisable to carry out a metallographic study of he inter critical zone in the HAZ as well as the corresponding tests, in order analyze the inter critical region brittleness reasons. The study is performed on a HSLA 75 mm thick panel 450 EMZ type II, welded under a SAW process with heat input and welded parameters controlled, without any post weld heat treatment. (Author)

  12. Efecto de tres ambientes de transporte sobre el tiempo de aparición de la autólisis en muestras de alevines de trucha arcoíris (Oncorhynchus mykiss Effect of three transport conditions on the appearance time of autolysis in samples of rainbow trout fry (Oncorhynchus mykiss

    Directory of Open Access Journals (Sweden)

    AR Ortloff

    2011-01-01

    Full Text Available El objetivo de este trabajo fue comparar el efecto de tres tipos de ambiente de transporte sobre el tiempo de aparición y progreso de los cambios autolíticos de muestras de alevines muertos, enviados para ser procesados para análisis histopatológico. Para ello se depositaron 300 cadáveres de alevines completos en tres ambientes de transporte: sumergidos agua a 4 °C, sumergidos agua a 15 °C y ambiente seco a 4 °C. Cada una hora, desde el tiempo cero hasta las 24 horas, grupos de 4 alevines por ambiente fueron fijados en formalina al 10% y procesados con la técnica histológica convencional de hematoxilina&eosina. En todos los grupos se determinó el tiempo de aparición de los cambios autolíticos en los distintos segmentos del riñón e hígado, clasificándose en cambios autolíticos tempranos, avanzados y autólisis completa. Se observó que los cambios autolíticos se evidencian primero en los hígados de los cadáveres a 4 °C en ambiente seco y al último en los cadáveres sumergidos en agua a 4 °C (1 y 6 horas, respectivamente. Respecto al riñón, los primeros cambios autolíticos se presentaron en cadáveres a 4 °C en ambiente seco y al último en los cadáveres sumergidos en agua a 4 °C (3 y 9 horas, respectivamente. De este estudio se concluye que de los tres ambientes de transporte comparados, el que conserva por más tiempo la estructura histológica y citológica de los tejidos de los peces para análisis histológico es la conservación sumergidos en agua a 4 °C, evidenciando el rol clave de la temperatura y humedad ambiental en el progreso de la autólisis de peces.The aim of this work was to compare three types of transport conditions on the appearance and progress of autolytic changes in samples of dead fry sent to be processed for histopathological analysis. 300 whole fry corpses were subjected to three transport conditions: submerged in water at 4 °C, submerged in water at 15 °C and dry atmosphere at 4

  13. Information Processing - Administrative Data Processing

    Science.gov (United States)

    Bubenko, Janis

    A three semester, 60-credit course package in the topic of Administrative Data Processing (ADP), offered in 1966 at Stockholm University (SU) and the Royal Institute of Technology (KTH) is described. The package had an information systems engineering orientation. The first semester focused on datalogical topics, while the second semester focused on the infological topics. The third semester aimed to deepen the students’ knowledge in different parts of ADP and at writing a bachelor thesis. The concluding section of this paper discusses various aspects of the department’s first course effort. The course package led to a concretisation of our discipline and gave our discipline an identity. Our education seemed modern, “just in time”, and well adapted to practical needs. The course package formed the first concrete activity of a group of young teachers and researchers. In a forty-year perspective, these people have further developed the department and the topic to an internationally well-reputed body of knowledge and research. The department has produced more than thirty professors and more than one hundred doctoral degrees.

  14. Nova tocha de plasma híbrida para o processamento de materiais New hybrid plasma torch for materials processing

    Directory of Open Access Journals (Sweden)

    Richard Thomas Lermen

    2012-12-01

    Full Text Available O principal objetivo deste artigo foi apresentar um novo dispositivo para o processamento de materiais. Ele consiste em uma tocha de plasma híbrida, a qual é caracterizada pela formação simultânea de dois arcos plasma em apenas um dispositivo, gerando jato (de plasma com elevada densidade de energia. A tocha foi submetida aos seguintes testes experimentais: de funcionamento para verificar possíveis problemas de projeto e seus limites de operação; de caracterização, consistindo em determinar o comprimento do jato de plasma; de sua viabilidade para processamento de materiais (soldagem e corte. Com base nestes testes iniciais, alguns problemas de isolamento elétrico e térmico foram encontrados e resolvidos. Quanto aos resultados dos testes de caracterização, os parâmetros de funcionamento da tocha de plasma híbrida apresentaram influência significativa sobre o comprimento do jato de plasma. Os resultados obtidos nos testes de processamento de materiais foram satisfatórios, ou seja, é possível realizar soldagem e corte com esta tocha de plasma híbrida.The main aim of this paper was to present a new device for materials processing. It consist of a hybrid plasma torch which is characterized by the simultaneous formation of two plasma arcs in one device only, generating a (plasma jet with high energy density. The torch was submitted to the following trials: of operation to identify possible design problems and its operational torch limits; of characterization, consisting in plasma jet length determination; and of viability for materials processing (welding and cutting. Based on these initial trials, some electrical and thermal insulation problems were found and solved. Concerning the results of the characterization trials, the hybrid plasma torch parameters had a significant influence over the plasma jet length. The results obtained in the materials processing trials were satisfactory, i.e., it is possible to carry out welding and

  15. Investigación preliminar del lapacol en cortezas de palo de arco

    Directory of Open Access Journals (Sweden)

    María Cecilia B. de Domínguez

    2009-05-01

    Full Text Available El objeto de nuestro estudio es el de establecer un método de extracción adecuado para el Lapacol (Colorantes químicos, lograr una unificación por diversos tratamiento con solventes y por cromatografía y una vez obtenido el principío en forma pura, identificarlo por espectrofotometría (ultravioleta, infrarrojo y por sus propiedades físicas.

  16. The radiological risk in arc welding; El riesgo radiologico en la soldadura por arco

    Energy Technology Data Exchange (ETDEWEB)

    Alegria, N.; Campos, M.; Carrion, A.; Herranz, M.; Idoeta, R.; Legarda, F.; Nunez-Lagos, R.; Perez, C.; Rodriguez, S.; Rozas, S.; Sanchez, P.

    2011-07-01

    We present the current status of a project funded by the Nuclear Safety Council, for the study of the potential radiological risk in arc welding. In the coating of filler material of the electrodes and the soul of the continuous tubular wire welding material are located NORM who present a radioactive activity.

  17. O arco de desflorestamento na Amazônia: da pecuária à soja

    Directory of Open Access Journals (Sweden)

    Mariana Soares Domingues

    2012-08-01

    Full Text Available A produção de soja no Brasil alcançou destaque na última década. Atualmente, o país configura-se como maior exportador e segundo maior produtor de soja no mundo. Porém, a expansão desse cultivo está sendo associada diretamente ao desmatamento da Floresta Amazônica. Sua cultura iniciou-se no sul do país e avançou para a região central, sobre o bioma do cerrado, expandindo-se, gradativamente, ao norte do Brasil, principalmente por meio de latifúndios monocultores e controlados por grandes empresas transnacionais. A área de avanço agrícola ao norte tem substituído o bioma local: a Floresta Amazônica, o que tem preocupado entidades públicas e privadas, em face do desmatamento exagerado e perda da biodiversidade. Este estudo analisa o avanço da cultura da soja no norte do estado de Mato Grosso, no período entre 1984 e 2009, por meio da interpretação de imagens de satélite, e sua relação com o desmatamento da Floresta Amazônica. Como resultado, apresentam-se três mapas de uso do solo da área de estudo. A análise dos mapas permitiu verificar que o desmatamento recente da floresta está sendo promovido pela atividade pecuária, e os solos descampados e erodidos do pasto têm sido usados para a cultura de soja. Ou seja, na área analisada, a soja estabelece-se em áreas antes degradadas pelo gado, e não diretamente sobre as áreas de floresta desmatada.La producción de soja alcanzo gran destaque en la última década en Brasil. Actualmente, el país es el mayor exportador y el segundo mayor productor del mundo. Entretanto, la expansión de este cultivo es asociado directamente con el desmate de la Floresta Amazónica. Su cultura se inició en el sur del país y avanzó para la región central, sobre el bioma del cerrado, y se expande gradualmente, al norte del Brasil, principalmente a través de latifundios mono-cultores controlados por grandes empresas transnacionales. El avance agrícola al norte ha substituido el bioma local: La Floresta Amazónica, lo que preocupa las entidades públicas y privadas, frente al desmate exagerado y la pérdida de la biodiversidad. Esta investigación analiza el avance del cultivo de soja al norte del estado de Mato Grosso, en el período 1984-2009, a través de la interpretación de imágenes de satélite, y su relación con el desmate de la Floresta Amazónica. Como resultado, se presentan tres mapas de uso del suelo del área de estudio. El análisis de los mapas permiten verificar que el desmate reciente de la floresta ha sido promovido por la actividad pecuaria, y que los suelos descampados y erosionados han sido utilizados como cultivo de soja, que se establece en áreas antes degradadas por el ganado y no directamente sobre las áreas de floresta desmatada.Brazil is the largest exporter and second largest producer of soybeans in the world. However, the increase in production has been directly associated to the deforestation of the Amazon Rainforest. This culture began in the South and moved toward the central region of the country, spreading gradually to its northern part. This growth was mainly based on monoculture properties controlled by large transnational corporations, and has replaced the local biome: the Amazon rainforest. Such fact has worried both public and private entities, since there has been an excessive deforestation and biodiversity loss. This study analyses the advance of soybean in the North of the Brazilian state of Mato Grosso, in the period 1984-2009, by means of satellite image interpretation. As a result, presents three maps of land use development in the area of study. It is noticed that the recent deforestation was due to the livestock activities and, afterwards, the eroded soil from the open fields and pastures were recovered with the soybean crops. In other words, in the analyzed area, soy plantations were not directly established over the deforested areas, but rather over areas previously degraded by livestock.

  18. La Ciudad Astur: un espacio-proyecto en el Arco Atlántico

    OpenAIRE

    Rodríguez Gutiérrez, Fermín; Menéndez Fernández, Rafael

    1999-01-01

    La región central de Asturias constituye una aglomeración urbana en proceso de consolidación. La definición de este territorio como un espacio-proyecto (Ciudad Astur) permite su consideración como un factor clave para el desarrollo regional y para la articulación de su área de influencia y de las áreas rurales de oriente y occidente. La puesta en marcha de los procesos que permitan llevar a buen término este espacio-proyecto requiere la convergencia de distintos factores, relativos a la esfer...

  19. Análisis DEM 3D de arcos en regiones activas solares

    Science.gov (United States)

    Nuevo, F. A.; Mandrini, C. H.; Vásquez, A. M.; López Fuentes, M.

    2016-08-01

    The solar corona is highly organized by the magnetic field. Because of their temperature and density, magnetic loops are directly observable in active regions (ARs) in the extreme ultraviolet (EUV) and soft X-ray images. The observational determination of the three-dimensional (3D) distribution of basic physical parameters (electronic density and temperature, and magnetic field) is a fundamental constraint of coronal heating models. In this work we develop a technique of differential emission measure (DEM) analysis and we apply it an EUV loop identified in the images of the Atmospheric Imaging Assembly (AIA) on board the Solar Dynamics Observatory (SDO). The DEM is determined after background subtraction and the electronic density and temperature in the loop are estimated from its moments. The 3D structure of the magnetic field in the loop and its intensity are modeled using linear force free field extrapolations based on AR magnetograms. In this work we show preliminary results of this technique.

  20. Patrimonio e memoria do litoral catarinense: grupo arcos, um estudo de caso

    OpenAIRE

    Coutinho, Ana Lucia

    2016-01-01

    [ES]El Patrimonio y la Memoria cuando discutido sobre los aspectos que tienen relación con las diversas interpretaciones conceptuales con la expresión cultura, memoria e identidad agrega las informaciones de diferentes bibliografías y documento, produce una lista y la descripción etnográfica de los bienes culturales con relación a las fiestas (religiosidad); las Formas de Expresión, los Oficios y modos de Hacer y formas de Saber del litoral de Santa Catarina, asociada con la cultura azoriana,...

  1. Investigación preliminar del lapacol en cortezas de palo de arco

    OpenAIRE

    María Cecilia B. de Domínguez

    2009-01-01

    El objeto de nuestro estudio es el de establecer un método de extracción adecuado para el Lapacol (Colorantes químicos), lograr una unificación por diversos tratamiento con solventes y por cromatografía y una vez obtenido el principío en forma pura, identificarlo por espectrofotometría (ultravioleta, infrarrojo) y por sus propiedades físicas.

  2. Musculatura asociada al primer y segundo arco visceral de algunos anuros leptodactílidos

    Directory of Open Access Journals (Sweden)

    Palavecino, Patricia Mónica

    1999-01-01

    Full Text Available Se describe y compara la musculatura mandibular e hioidea de larvas de cuatro especies de anuros leptodactílidos presentes en el noroeste argentino. Las características miológicas observadas en Odontophrynus lavillai y Telmato-bius sp. son muy semejantes a las descriptas para otras larvas de anuros. Por el contrario, Ceratophrys cranwelli y Lepidobatrachus llanensis, muestran particularidades en éstos caracteres que los diferencian notablemente entre sí y con el resto de las especies descriptas. Tales particularidades parecen estar relacionadas con su modo de alimentación. Para la larva de Ceratophrys cranwelli se nomina un nuevo músculo, intermandibularis medio superficial. The jaw and hyoid musculature are described and compared for species of anuran tadpoles from the argentinean northwest. The myological characteristics observed in Odontophrynus lavillai and Telmatobius sp. are very similar when compared with other anuran tadpoles. In the contrast, Ceratophrys cranwelli and Lepidobatrachus llanensis show special muscular features which point out difference between each other and with all described species. These different characteristics appear to be related with their feeding habits. A new muscle found in Ceratophrys cranwelli, intermandibularis medio superficial, is desbribed and named.

  3. Arco Vara sai Tivoli elurajooni ehituseks volikogult rohelise tee / Tatjana Bratoljubova

    Index Scriptorium Estoniae

    Bratoljubova, Tatjana

    2008-01-01

    Tallinnas endise Kadrioru lõbustuspargi kohale ehitatakse kuni 11 korruselamut. Rein Murula arhitektuuribüroo detailplaneeringus on kesksel kohal arhitektuurikonkursi käigus välja valitud võidutöö, arhitektuuribüroo Luhse &Tuhal poolt pakutud lahendus

  4. AN ADVANCED OXIDATION PROCESS : FENTON PROCESS

    Directory of Open Access Journals (Sweden)

    Engin GÜRTEKİN

    2008-03-01

    Full Text Available Biological wastewater treatment is not effective treatment method if raw wastewater contains toxic and refractory organics. Advanced oxidation processes are applied before or after biological treatment for the detoxification and reclamation of this kind of wastewaters. The advanced oxidation processes are based on the formation of powerful hydroxyl radicals. Among advanced oxidation processes Fenton process is one of the most promising methods. Because application of Fenton process is simple and cost effective and also reaction occurs in a short time period. Fenton process is applied for many different proposes. In this study, Fenton process was evaluated as an advanced oxidation process in wastewater treatment.

  5. AN ADVANCED OXIDATION PROCESS : FENTON PROCESS

    OpenAIRE

    Engin GÜRTEKİN; Nusret ŞEKERDAĞ

    2008-01-01

    Biological wastewater treatment is not effective treatment method if raw wastewater contains toxic and refractory organics. Advanced oxidation processes are applied before or after biological treatment for the detoxification and reclamation of this kind of wastewaters. The advanced oxidation processes are based on the formation of powerful hydroxyl radicals. Among advanced oxidation processes Fenton process is one of the most promising methods. Because application of Fenton process is simple ...

  6. Auditory Processing Disorders

    Science.gov (United States)

    Auditory Processing Disorders Auditory processing disorders (APDs) are referred to by many names: central auditory processing disorders , auditory perceptual disorders , and central auditory disorders . APDs ...

  7. Extensible packet processing architecture

    Energy Technology Data Exchange (ETDEWEB)

    Robertson, Perry J.; Hamlet, Jason R.; Pierson, Lyndon G.; Olsberg, Ronald R.; Chun, Guy D.

    2013-08-20

    A technique for distributed packet processing includes sequentially passing packets associated with packet flows between a plurality of processing engines along a flow through data bus linking the plurality of processing engines in series. At least one packet within a given packet flow is marked by a given processing engine to signify by the given processing engine to the other processing engines that the given processing engine has claimed the given packet flow for processing. A processing function is applied to each of the packet flows within the processing engines and the processed packets are output on a time-shared, arbitered data bus coupled to the plurality of processing engines.

  8. Refactoring Process Models in Large Process Repositories.

    NARCIS (Netherlands)

    Weber, B.; Reichert, M.U.

    2008-01-01

    With the increasing adoption of process-aware information systems (PAIS), large process model repositories have emerged. Over time respective models have to be re-aligned to the real-world business processes through customization or adaptation. This bears the risk that model redundancies are introdu

  9. Thinning spatial point processes into Poisson processes

    DEFF Research Database (Denmark)

    Møller, Jesper; Schoenberg, Frederic Paik

    2010-01-01

    are identified, and where we simulate backwards and forwards in order to obtain the thinned process. In the case of a Cox process, a simple independent thinning technique is proposed. In both cases, the thinning results in a Poisson process if and only if the true Papangelou conditional intensity is used, and...

  10. Thinning spatial point processes into Poisson processes

    DEFF Research Database (Denmark)

    Møller, Jesper; Schoenberg, Frederic Paik

    , and where one simulates backwards and forwards in order to obtain the thinned process. In the case of a Cox process, a simple independent thinning technique is proposed. In both cases, the thinning results in a Poisson process if and only if the true Papangelou conditional intensity is used, and thus can...

  11. Process Intensification: A Perspective on Process Synthesis

    DEFF Research Database (Denmark)

    Lutze, Philip; Gani, Rafiqul; Woodley, John

    2010-01-01

    process options is presented. For each step, different tools and methods will be needed. In this paper, a knowledge base tool storing and retrieving necessary information/data about intensified processes/equipments has been highlighted including metrics for performance evaluation. The application......In recent years, process intensification (PI) has attracted considerable academic interest as a potential means for process improvement, to meet the increasing demands for sustainable production. A variety of intensified operations developed in academia and industry creates a large number...... of options to potentially improve the process but to identify the set of feasible solutions for PI in which the optimal can be found takes considerable resources. Hence, a process synthesis tool to achieve PI would potentially assist in the generation and evaluation of PI options. Currently, several process...

  12. The permanental process

    DEFF Research Database (Denmark)

    McCullagh, Peter; Møller, Jesper

    2006-01-01

    We extend the boson process first to a large class of Cox processes and second to an even larger class of infinitely divisible point processes. Density and moment results are studied in detail. These results are obtained in closed form as weighted permanents, so the extension i called a permanental...... process. Temporal extensions and a particularly tractable case of the permanental process are also studied. Extensions of the fermion process along similar lines, leading to so-called determinantal processes, are discussed....

  13. Modelingof the Biotransformation Processes

    OpenAIRE

    Vrsalovic Presecki, A.; Findrik, Z.; Zelic, B.

    2006-01-01

    Modeling and simulation of biotransformation processes have a large potential in searching for optimal process conditions, development and process design, control, scale-up, identifying of the process cost structure, and comparing process alternatives. Modeling and simulation leads to better understanding and quantification of the investigated process and could lead to significant material and costs savings especially in the early phases of the process development. In this review modeling and...

  14. Food Processing and Allergenicity

    NARCIS (Netherlands)

    Verhoeckx, K.; Vissers, Y.; Baumert, J.L.; Faludi, R.; Fleys, M.; Flanagan, S.; Herouet-Guicheney, C.; Holzhauser, T.; Shimojo, R.; Bolt, van der Nieke; Wichers, H.J.; Kimber, I.

    2015-01-01

    Food processing can have many beneficial effects. However, processing may also alter the allergenic properties of food proteins. A wide variety of processing methods is available and their use depends largely on the food to be processed.

    In this review the impact of processing (heat and non

  15. Special parallel processing workshop

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1994-12-01

    This report contains viewgraphs from the Special Parallel Processing Workshop. These viewgraphs deal with topics such as parallel processing performance, message passing, queue structure, and other basic concept detailing with parallel processing.

  16. Contracting process innovation

    OpenAIRE

    Nissen, Mark E.

    2001-01-01

    Process innovation pertains to making dramatic improvements in performance of enterprise processes. Stemming from total quality management, business process reengineering and other widely-accepted approaches to performance improvement in the business enterprise, process innovation has largely been practiced without a systematic method and required expertise only possessed by a few, highly-talented people. Now, as the result of research in this area, the process of process innovation now has a...

  17. Product Development Process Modeling

    Institute of Scientific and Technical Information of China (English)

    1999-01-01

    The use of Concurrent Engineering and other modern methods of product development and maintenance require that a large number of time-overlapped "processes" be performed by many people. However, successfully describing and optimizing these processes are becoming even more difficult to achieve. The perspective of industrial process theory (the definition of process) and the perspective of process implementation (process transition, accumulation, and inter-operations between processes) are used to survey the method used to build one base model (multi-view) process model.

  18. Integrated Process Capability Analysis

    Institute of Scientific and Technical Information of China (English)

    Chen; H; T; Huang; M; L; Hung; Y; H; Chen; K; S

    2002-01-01

    Process Capability Analysis (PCA) is a powerful too l to assess the ability of a process for manufacturing product that meets specific ations. The larger process capability index implies the higher process yield, a nd the larger process capability index also indicates the lower process expected loss. Chen et al. (2001) has applied indices C pu, C pl, and C pk for evaluating the process capability for a multi-process product wi th smaller-the-better, larger-the-better, and nominal-the-best spec...

  19. From Process Understanding to Process Control

    NARCIS (Netherlands)

    Streefland, M.

    2010-01-01

    A licensed pharmaceutical process is required to be executed within the validated ranges throughout the lifetime of product manufacturing. Changes to the process usually require the manufacturer to demonstrate that the safety and efficacy of the product remains unchanged. Recent changes in the regul

  20. Business Process Customization using Process Merging Techniques

    NARCIS (Netherlands)

    Bulanov, Pavel; Lazovik, Alexander; Aiello, Marco

    2012-01-01

    One of the important application of service composition techniques lies in the field of business process management. Essentially a business process can be considered as a composition of services, which is usually prepared by domain experts, and many tasks still have to be performed manually. These i

  1. Estudo da microestrutura formada no processo de soldagem por atrito em aço C-Mn com pino consumível Microstructural evaluation of a C-Mn steel welded by the friction hidro-pillar process

    Directory of Open Access Journals (Sweden)

    Cleber Rodrigo de Lima Lessa

    2011-03-01

    Full Text Available A soldagem por arco elétrico é a técnica mais empregada para reparar estruturas de grande porte, mas apresenta desvantagens associadas à solidificação do metal de solda. Então a utilização de processos de solda por atrito, especificamente o processo FHPP (Friction Hydro Pillar Processing que consiste na utilização de pinos para reparo por atrito, apresenta vantagens por ser um processo realizado no estado sólido. Menores temperaturas estão envolvidas e não existe influência do ambiente externo, minimizando os problemas nos reparos estruturais. Este trabalho teve como objetivo observar a variação dos parâmetros do processo e os efeitos desses na microestrutura e qualidade do reparo. O estudo comparou diferentes forças axiais nos reparos com aço C-Mn através de metalografias e perfis de microdureza. Uma força axial maior resultou em um menor tempo de processo, em uma microestrutura mais homogênea e evitou os defeitos "falta de adesão" na zona de ligação e "cisalhamento a quente" do pino.The arc welding it is the most used technique to repair large structures, however, has disadvantages that result from the solidification of the weld metal. So the use of friction welding, specifically the FHPP (friction hydro pillar processing process that consists on using plugs for friction repair, presents advantages because it is a process that is carried out on the solid state. Lower temperatures are involved and do not have the influence of the external environment, minimizing the problems on structure repairs. This work has the objective of observe the process parameters variation and their effects on microstructure and on the quality of the repair. The study compared different axial forces on repairs whit C-Mn steel through of metallographic and microhardness profiles. A higher axial force results in less time of process, in a more homogeneous microstructure, and avoided the defects "noncompliance" in the bounding zone and "hot

  2. Idaho Chemical Processing Plant Process Efficiency improvements

    Energy Technology Data Exchange (ETDEWEB)

    Griebenow, B.

    1996-03-01

    In response to decreasing funding levels available to support activities at the Idaho Chemical Processing Plant (ICPP) and a desire to be cost competitive, the Department of Energy Idaho Operations Office (DOE-ID) and Lockheed Idaho Technologies Company have increased their emphasis on cost-saving measures. The ICPP Effectiveness Improvement Initiative involves many activities to improve cost effectiveness and competitiveness. This report documents the methodology and results of one of those cost cutting measures, the Process Efficiency Improvement Activity. The Process Efficiency Improvement Activity performed a systematic review of major work processes at the ICPP to increase productivity and to identify nonvalue-added requirements. A two-phase approach was selected for the activity to allow for near-term implementation of relatively easy process modifications in the first phase while obtaining long-term continuous improvement in the second phase and beyond. Phase I of the initiative included a concentrated review of processes that had a high potential for cost savings with the intent of realizing savings in Fiscal Year 1996 (FY-96.) Phase II consists of implementing long-term strategies too complex for Phase I implementation and evaluation of processes not targeted for Phase I review. The Phase II effort is targeted for realizing cost savings in FY-97 and beyond.

  3. Idaho Chemical Processing Plant Process Efficiency improvements

    International Nuclear Information System (INIS)

    In response to decreasing funding levels available to support activities at the Idaho Chemical Processing Plant (ICPP) and a desire to be cost competitive, the Department of Energy Idaho Operations Office (DOE-ID) and Lockheed Idaho Technologies Company have increased their emphasis on cost-saving measures. The ICPP Effectiveness Improvement Initiative involves many activities to improve cost effectiveness and competitiveness. This report documents the methodology and results of one of those cost cutting measures, the Process Efficiency Improvement Activity. The Process Efficiency Improvement Activity performed a systematic review of major work processes at the ICPP to increase productivity and to identify nonvalue-added requirements. A two-phase approach was selected for the activity to allow for near-term implementation of relatively easy process modifications in the first phase while obtaining long-term continuous improvement in the second phase and beyond. Phase I of the initiative included a concentrated review of processes that had a high potential for cost savings with the intent of realizing savings in Fiscal Year 1996 (FY-96.) Phase II consists of implementing long-term strategies too complex for Phase I implementation and evaluation of processes not targeted for Phase I review. The Phase II effort is targeted for realizing cost savings in FY-97 and beyond

  4. Spatial Process Generation

    OpenAIRE

    Kroese, Dirk P.; Botev, Zdravko I.

    2013-01-01

    The generation of random spatial data on a computer is an important tool for understanding the behavior of spatial processes. In this paper we describe how to generate realizations from the main types of spatial processes, including Gaussian and Markov random fields, point processes, spatial Wiener processes, and Levy fields. Concrete MATLAB code is provided.

  5. Thin film processes

    CERN Document Server

    Vossen, John L

    1978-01-01

    Remarkable advances have been made in recent years in the science and technology of thin film processes for deposition and etching. It is the purpose of this book to bring together tutorial reviews of selected filmdeposition and etching processes from a process viewpoint. Emphasis is placed on the practical use of the processes to provide working guidelines for their implementation, a guide to the literature, and an overview of each process.

  6. Hyperspectral processing in graphical processing units

    Science.gov (United States)

    Winter, Michael E.; Winter, Edwin M.

    2011-06-01

    With the advent of the commercial 3D video card in the mid 1990s, we have seen an order of magnitude performance increase with each generation of new video cards. While these cards were designed primarily for visualization and video games, it became apparent after a short while that they could be used for scientific purposes. These Graphical Processing Units (GPUs) are rapidly being incorporated into data processing tasks usually reserved for general purpose computers. It has been found that many image processing problems scale well to modern GPU systems. We have implemented four popular hyperspectral processing algorithms (N-FINDR, linear unmixing, Principal Components, and the RX anomaly detection algorithm). These algorithms show an across the board speedup of at least a factor of 10, with some special cases showing extreme speedups of a hundred times or more.

  7. Process innovation laboratory

    DEFF Research Database (Denmark)

    Møller, Charles

    2007-01-01

    Most organizations today are required not only to operate effective business processes but also to allow for changing business conditions at an increasing rate. Today nearly every business relies on their enterprise information systems (EIS) for process integration and future generations of EIS...... will increasingly be driven by business process models. Consequently business process modelling and improvement is becoming a serious challenge. The aim of this paper is to establish a conceptual framework for business process innovation (BPI) in the supply chain based on advanced EIS. The challenge is thus...... to create a new methodology for developing and exploring process models and applications. The paper outlines the process innovation laboratory as a new approach to BPI. The process innovation laboratory is a comprehensive framework and a collaborative workspace for experimenting with process models...

  8. Digital image processing.

    Science.gov (United States)

    Seeram, Euclid

    2004-01-01

    Digital image processing is now commonplace in radiology, nuclear medicine and sonography. This article outlines underlying principles and concepts of digital image processing. After completing this article, readers should be able to: List the limitations of film-based imaging. Identify major components of a digital imaging system. Describe the history and application areas of digital image processing. Discuss image representation and the fundamentals of digital image processing. Outline digital image processing techniques and processing operations used in selected imaging modalities. Explain the basic concepts and visualization tools used in 3-D and virtual reality imaging. Recognize medical imaging informatics as a new area of specialization for radiologic technologists. PMID:15352557

  9. Metallurgical process engineering

    Energy Technology Data Exchange (ETDEWEB)

    Yin, Ruiyu [Central Iron and Steel Research Institute (CISRI), Beijing (China)

    2011-07-01

    ''Metallurgical Process Engineering'' discusses large-scale integrated theory on the level of manufacturing production processes, putting forward concepts for exploring non-equilibrium and irreversible complex system. It emphasizes the dynamic and orderly operation of the steel plant manufacturing process, the major elements of which are the flow, process network and program. The book aims at establishing a quasi-continuous and continuous process system for improving several techno-economic indices, minimizing dissipation and enhancing the market competitiveness and sustainability of steel plants. The book is intended for engineers, researchers and managers in the fields of metallurgical engineering, industrial design, and process engineering. (orig.)

  10. The Integrated Renovation Process

    DEFF Research Database (Denmark)

    Galiotto, Nicolas; Heiselberg, Per; Knudstrup, Mary-Ann

    The Integrated Renovation Process (IRP) is a user customized methodology based on judiciously selected constructivist and interactive multi-criteria decision making methods (Galiotto, Heiselberg, & Knudstrup, 2014 (expected)). When applied for home renovation, the Integrated Renovation Process...

  11. Towards better process understanding

    DEFF Research Database (Denmark)

    Matero, Sanni Elina; van der Berg, Franciscus Winfried J; Poutiainen, Sami;

    2013-01-01

    The manufacturing of tablets involves many unit operations that possess multivariate and complex characteristics. The interactions between the material characteristics and process related variation are presently not comprehensively analyzed due to univariate detection methods. As a consequence......, current best practice to control a typical process is to not allow process-related factors to vary i.e. lock the production parameters. The problem related to the lack of sufficient process understanding is still there: the variation within process and material properties is an intrinsic feature...... and cannot be compensated for with constant process parameters. Instead, a more comprehensive approach based on the use of multivariate tools for investigating processes should be applied. In the pharmaceutical field these methods are referred to as Process Analytical Technology (PAT) tools that aim...

  12. Infrared processing of foods

    Science.gov (United States)

    Infrared (IR) processing of foods has been gaining popularity over conventional processing in several unit operations, including drying, peeling, baking, roasting, blanching, pasteurization, sterilization, disinfection, disinfestation, cooking, and popping . It has shown advantages over conventional...

  13. News: Process intensification

    Science.gov (United States)

    Conservation of materials and energy is a major objective to the philosophy of sustainability. Where production processes can be intensified to assist these objectives, significant advances have been developed to assist conservation as well as cost. Process intensification (PI) h...

  14. Dairy processing, Improving quality

    NARCIS (Netherlands)

    Smit, G.

    2003-01-01

    This book discusses raw milk composition, production and quality, and reviews developments in processing from hygiene and HACCP systems to automation, high-pressure processing and modified atmosphere packaging.

  15. Flavor changing lepton processes

    International Nuclear Information System (INIS)

    The flavor changing lepton processes, or in another words the lepton flavor changing processes, are described with emphasis on the updated theoretical motivations and the on-going experimental progress on a new high-intense muon source. (author)

  16. Drug Development Process

    Science.gov (United States)

    ... Device Approvals The Drug Development Process The Drug Development Process Share Tweet Linkedin Pin it More sharing ... Pin it Email Print Step 1 Discovery and Development Discovery and Development Research for a new drug ...

  17. Modeling Design Process

    OpenAIRE

    TAKEDA, Hideaki; Veerkamp, Paul; Yoshikawa, Hiroyuki

    1990-01-01

    This article discusses building a computable design process model, which is a prerequisite for realizing intelligent computer-aided design systems. First, we introduce general design theory, from which a descriptive model of design processes is derived. In this model, the concept of metamodels plays a crucial role in describing the evolutionary nature of design. Second, we show a cognitive design process model obtained by observing design processes using a protocol analysis method. We then di...

  18. Modeling multiphase materials processes

    CERN Document Server

    Iguchi, Manabu

    2010-01-01

    ""Modeling Multiphase Materials Processes: Gas-Liquid Systems"" describes the methodology and application of physical and mathematical modeling to multi-phase flow phenomena in materials processing. The book focuses on systems involving gas-liquid interaction, the most prevalent in current metallurgical processes. The performance characteristics of these processes are largely dependent on transport phenomena. This volume covers the inherent characteristics that complicate the modeling of transport phenomena in such systems, including complex multiphase structure, intense turbulence, opacity of

  19. Grind hardening process

    CERN Document Server

    Salonitis, Konstantinos

    2015-01-01

    This book presents the grind-hardening process and the main studies published since it was introduced in 1990s.  The modelling of the various aspects of the process, such as the process forces, temperature profile developed, hardness profiles, residual stresses etc. are described in detail. The book is of interest to the research community working with mathematical modeling and optimization of manufacturing processes.

  20. Software Process Improvement Defined

    DEFF Research Database (Denmark)

    Aaen, Ivan

    2002-01-01

    This paper argues in favor of the development of explanatory theory on software process improvement. The last one or two decades commitment to prescriptive approaches in software process improvement theory may contribute to the emergence of a gulf dividing theorists and practitioners....... It is proposed that this divide be met by the development of theory evaluating prescriptive approaches and informing practice with a focus on the software process policymaking and process control aspects of improvement efforts...

  1. Business Process Modeling Notation

    OpenAIRE

    Robert Flowers; Charles Edeki

    2013-01-01

    Models as representations of real world entities may appear to the novice to be an unnecessary abstraction. Indeed, in small organizations where there are relatively few processes, there is little need to abstract activities. When it comes to large organizations, with hundreds or thousands of processes, thecreation of models becomes an essential activity. Even if the process itself does not change in the form of new process re-engineering efforts or new applications, there are new employees a...

  2. Dosimetry for radiation processing

    DEFF Research Database (Denmark)

    Miller, Arne

    1986-01-01

    During the past few years significant advances have taken place in the different areas of dosimetry for radiation processing, mainly stimulated by the increased interest in radiation for food preservation, plastic processing and sterilization of medical products. Reference services both...... and sterilization dosimetry, optichromic dosimeters in the shape of small tubes for food processing, and ESR spectroscopy of alanine for reference dosimetry. In this paper the special features of radiation processing dosimetry are discussed, several commonly used dosimeters are reviewed, and factors leading...

  3. Hawkes processes in finance

    OpenAIRE

    Emmanuel Bacry; Iacopo Mastromatteo; Jean-Fran\\c{c}ois Muzy

    2015-01-01

    In this paper we propose an overview of the recent academic literature devoted to the applications of Hawkes processes in finance. Hawkes processes constitute a particular class of multivariate point processes that has become very popular in empirical high frequency finance this last decade. After a reminder of the main definitions and properties that characterize Hawkes processes, we review their main empirical applications to address many different problems in high frequency finance. Becaus...

  4. Stochastic Processes in Finance

    OpenAIRE

    Madan, Dilip B.

    2010-01-01

    Stochastic processes arising in the description of the risk-neutral evolution of equity prices are reviewed. Starting with Brownian motion, I review extensions to Lévy and Sato processes. These processes have independent increments; the former are homogeneous in time, whereas the latter are inhomogeneous. One-dimensional Markov processes such as local volatility and local Lévy are discussed next. Finally, I take up two forms of stochastic volatility that are due to either space scaling or tim...

  5. Mining processes in dentistry

    OpenAIRE

    R. S. Mans; Reijers, H.A.; Genuchten, van, MJIM Michiel; Wismeijer, D.

    2012-01-01

    Business processes in dentistry are quickly evolving towards "digital dentistry". This means that many steps in the dental process will increasingly deal with computerized information or computerized half products. A complicating factor in the improvement of process performance in dentistry, however, is the large number of independent dental professionals that are involved in the entire process. In order to reap the benefits of digital dentistry, it is essential to obtain an accurate view on ...

  6. Lithography process control

    CERN Document Server

    Levinson, Harry J

    1999-01-01

    This text covers lithography process control at several levels, from fundamental through advanced topics. The book is a self-contained tutorial that works both as an introduction to the technology and as a reference for the experienced lithographer. It reviews the foundations of statistical process control as background for advanced topics such as complex processes and feedback. In addition, it presents control methodologies that may be applied to process development pilot lines.

  7. Semisolid Metal Processing Consortium

    Energy Technology Data Exchange (ETDEWEB)

    Apelian,Diran

    2002-01-10

    Mathematical modeling and simulations of semisolid filling processes remains a critical issue in understanding and optimizing the process. Semisolid slurries are non-Newtonian materials that exhibit complex rheological behavior. There the way these slurries flow in cavities is very different from the way liquid in classical casting fills cavities. Actually filling in semisolid processing is often counter intuitive

  8. Multiphoton processes: conference proceedings

    International Nuclear Information System (INIS)

    The chapters of this volume represent the invited papers delivered at the conference. They are arranged according to thermatic proximity beginning with atoms and continuing with molecules and surfaces. Section headings include multiphoton processes in atoms, field fluctuations and collisions in multiphoton process, and multiphoton processes in molecules and surfaces. Abstracts of individual items from the conference were prepared separately for the data base

  9. Auditory processing models

    DEFF Research Database (Denmark)

    Dau, Torsten

    2008-01-01

    The Handbook of Signal Processing in Acoustics will compile the techniques and applications of signal processing as they are used in the many varied areas of Acoustics. The Handbook will emphasize the interdisciplinary nature of signal processing in acoustics. Each Section of the Handbook will pr...

  10. How yogurt is processed

    Science.gov (United States)

    This month’s Processing column on the theme of “How Is It Processed?” focuses on yogurt. Yogurt is known for its health-promoting properties. This column will provide a brief overview of the history of yogurt and the current market. It will also unveil both traditional and modern yogurt processing t...

  11. Silicon production process evaluations

    Science.gov (United States)

    1982-01-01

    Chemical engineering analyses involving the preliminary process design of a plant (1,000 metric tons/year capacity) to produce silicon via the technology under consideration were accomplished. Major activities in the chemical engineering analyses included base case conditions, reaction chemistry, process flowsheet, material balance, energy balance, property data, equipment design, major equipment list, production labor and forward for economic analysis. The process design package provided detailed data for raw materials, utilities, major process equipment and production labor requirements necessary for polysilicon production in each process.

  12. Characterization of concurrent processing

    Science.gov (United States)

    Utku, S.; Melosh, R.; Salama, M.

    1985-01-01

    Computer architectures designed for concurrent processing are characterized by the number of processing elements, ensemble speed, random access memory, input/output routes, and modes of operation. The important attributes of processing tasks are then identified, and some processing stratagems are examined. It is shown that the greater the complexity of a given task, the wider the range of possible stratagems which can accomplish the task. For relatively simple tasks, the optimum stratagem can be found by analytical reasoning. For more complex tasks, however, optimum scheduling techniques may have to be employed for the assignment of segments of the task to the available processing elements.

  13. Biomass process handbook

    Energy Technology Data Exchange (ETDEWEB)

    1983-01-01

    Descriptions are given of 42 processes which use biomass to produce chemical products. Marketing and economic background, process description, flow sheets, costs, major equipment, and availability of technology are given for each of the 42 processes. Some of the chemicals discussed are: ethanol, ethylene, acetaldehyde, butanol, butadiene, acetone, citric acid, gluconates, itaconic acid, lactic acid, xanthan gum, sorbitol, starch polymers, fatty acids, fatty alcohols, glycerol, soap, azelaic acid, perlargonic acid, nylon-11, jojoba oil, furfural, furfural alcohol, tetrahydrofuran, cellulose polymers, products from pulping wastes, and methane. Processes include acid hydrolysis, enzymatic hydrolysis, fermentation, distillation, Purox process, and anaerobic digestion.

  14. Data processing made simple

    CERN Document Server

    Wooldridge, Susan

    2013-01-01

    Data Processing: Made Simple, Second Edition presents discussions of a number of trends and developments in the world of commercial data processing. The book covers the rapid growth of micro- and mini-computers for both home and office use; word processing and the 'automated office'; the advent of distributed data processing; and the continued growth of database-oriented systems. The text also discusses modern digital computers; fundamental computer concepts; information and data processing requirements of commercial organizations; and the historical perspective of the computer industry. The

  15. Evaluation of steelmaking processes

    Energy Technology Data Exchange (ETDEWEB)

    Fruehan, R.J. [Carnegie-Mellon Univ., Pittsburgh, PA (United States)

    1994-01-01

    Objective of the AISI Direct Steelmaking Program is to develop a process for producing steel directly from ore and coal; the process should be less capital intensive, consume less energy, and have higher productivity. A task force was formed to examine available processes: trough, posthearth, IRSID, Electric Arc Furnace, energy optimizing furnace. It is concluded that there is insufficient incentive to replace a working BOF with any of these processes to refine hot metal; however, if new steelmaking capacity is required, IRSID and EOF should be considered. A fully continuous process should not be considered until direct ironmaking and continuous refining are perfected.

  16. Colloid process engineering

    CERN Document Server

    Peukert, Wolfgang; Rehage, Heinz; Schuchmann, Heike

    2015-01-01

    This book deals with colloidal systems in technical processes and the influence of colloidal systems by technical processes. It explores how new measurement capabilities can offer the potential for a dynamic development of scientific and engineering, and examines the origin of colloidal systems and its use for new products. The future challenges to colloidal process engineering are the development of appropriate equipment and processes for the production and obtainment of multi-phase structures and energetic interactions in market-relevant quantities. The book explores the relevant processes and for controlled production and how they can be used across all scales.

  17. Thin film processes II

    CERN Document Server

    Kern, Werner

    1991-01-01

    This sequel to the 1978 classic, Thin Film Processes, gives a clear, practical exposition of important thin film deposition and etching processes that have not yet been adequately reviewed. It discusses selected processes in tutorial overviews with implementation guide lines and an introduction to the literature. Though edited to stand alone, when taken together, Thin Film Processes II and its predecessor present a thorough grounding in modern thin film techniques.Key Features* Provides an all-new sequel to the 1978 classic, Thin Film Processes* Introduces new topics, and sever

  18. Theory of Markov processes

    CERN Document Server

    Dynkin, E B

    1960-01-01

    Theory of Markov Processes provides information pertinent to the logical foundations of the theory of Markov random processes. This book discusses the properties of the trajectories of Markov processes and their infinitesimal operators.Organized into six chapters, this book begins with an overview of the necessary concepts and theorems from measure theory. This text then provides a general definition of Markov process and investigates the operations that make possible an inspection of the class of Markov processes corresponding to a given transition function. Other chapters consider the more c

  19. Dynamical laser spike processing

    CERN Document Server

    Shastri, Bhavin J; Tait, Alexander N; Rodriguez, Alejandro W; Wu, Ben; Prucnal, Paul R

    2015-01-01

    Novel materials and devices in photonics have the potential to revolutionize optical information processing, beyond conventional binary-logic approaches. Laser systems offer a rich repertoire of useful dynamical behaviors, including the excitable dynamics also found in the time-resolved "spiking" of neurons. Spiking reconciles the expressiveness and efficiency of analog processing with the robustness and scalability of digital processing. We demonstrate that graphene-coupled laser systems offer a unified low-level spike optical processing paradigm that goes well beyond previously studied laser dynamics. We show that this platform can simultaneously exhibit logic-level restoration, cascadability and input-output isolation---fundamental challenges in optical information processing. We also implement low-level spike-processing tasks that are critical for higher level processing: temporal pattern detection and stable recurrent memory. We study these properties in the context of a fiber laser system, but the addit...

  20. Process monitor gratings

    Science.gov (United States)

    Brunner, T. A.; Ausschnitt, C. P.

    2007-03-01

    Despite the increasing use of advanced imaging methods to pattern chip features, process windows continue to shrink with decreasing critical dimensions. Controlling the manufacturing process within these shrinking windows requires monitor structures designed to maximize both sensitivity and robustness. In particular, monitor structures must exhibit a large, measurable response to dose and focus changes over the entire range of the critical features process window. Any process variations present fundamental challenges to the effectiveness of OPC methods, since the shape compensation assumes a repeatable process. One particular process parameter which is under increasing scrutiny is focus blur, e.g. from finite laser bandwidth, which can cause such OPC instability, and thereby damage pattern fidelity. We introduce a new type of test target called the Process Monitor Grating (PMG) which is designed for extreme sensitivity to process variation. The PMG design principle is to use assist features to zero out higher diffraction orders. We show via simulation and experiment that such structures are indeed very sensitive to process variation. In addition, PMG targets have other desirable attributes such as mask manufacturability, robustness to pattern collapse, and compatibility with standard CD metrology methods such as scatterometry. PMG targets are applicable to the accurate determination of dose and focus deviations, and in combination with an isofocal grating target, allow the accurate determination of focus blur. The methods shown in this paper are broadly applicable to the characterization of process deviations using test wafers or to the control of product using kerf structures.

  1. Future Steelmaking Processes

    Energy Technology Data Exchange (ETDEWEB)

    Prof. R. J. Fruehan

    2004-09-20

    There is an increasing demand for an ironmaking process with lower capital cost, energy consumption and emissions than a blast furnace. It is the hypothesis of the present work that an optimized combination of two reasonable proven technologies will greatly enhance the overall process. An example is a rotary hearth furnace (RHF) linked to a smelter (e.g., AISI, HIsmelt). The objective of this research is to select promising process combinations, develop energy, materials balance and productivity models for the individual processes, conduct a limited amount of basic research on the processes and evaluate the process combinations. Three process combinations were selected with input from the industrial partners. The energy-materials and productivity models for the RHF, smelter, submerged arc furnace and CIRCOFER were developed. Since utilization of volatiles in coal is critical for energy and CO{sub 2} emission reduction, basic research on this topic was also conducted. The process models developed are a major product developed in this research. These models can be used for process evaluation by the industry. The process combinations of an RHF-Smelter and a simplified CIRCOFER-Smelter appear to be promising. Energy consumption is reduced and productivity increased. Work on this project is continuing using funds from other sources.

  2. Badge Office Process Analysis

    Energy Technology Data Exchange (ETDEWEB)

    Haurykiewicz, John Paul [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Dinehart, Timothy Grant [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Parker, Robert Young [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2016-05-12

    The purpose of this process analysis was to analyze the Badge Offices’ current processes from a systems perspective and consider ways of pursuing objectives set forth by SEC-PS, namely increased customer flow (throughput) and reduced customer wait times. Information for the analysis was gathered for the project primarily through Badge Office Subject Matter Experts (SMEs), and in-person observation of prevailing processes. Using the information gathered, a process simulation model was constructed to represent current operations and allow assessment of potential process changes relative to factors mentioned previously. The overall purpose of the analysis was to provide SEC-PS management with information and recommendations to serve as a basis for additional focused study and areas for potential process improvements in the future.

  3. Spitzer Telemetry Processing System

    Science.gov (United States)

    Stanboli, Alice; Martinez, Elmain M.; McAuley, James M.

    2013-01-01

    The Spitzer Telemetry Processing System (SirtfTlmProc) was designed to address objectives of JPL's Multi-mission Image Processing Lab (MIPL) in processing spacecraft telemetry and distributing the resulting data to the science community. To minimize costs and maximize operability, the software design focused on automated error recovery, performance, and information management. The system processes telemetry from the Spitzer spacecraft and delivers Level 0 products to the Spitzer Science Center. SirtfTlmProc is a unique system with automated error notification and recovery, with a real-time continuous service that can go quiescent after periods of inactivity. The software can process 2 GB of telemetry and deliver Level 0 science products to the end user in four hours. It provides analysis tools so the operator can manage the system and troubleshoot problems. It automates telemetry processing in order to reduce staffing costs.

  4. Linearity in Process Languages

    DEFF Research Database (Denmark)

    Nygaard, Mikkel; Winskel, Glynn

    2002-01-01

    The meaning and mathematical consequences of linearity (managing without a presumed ability to copy) are studied for a path-based model of processes which is also a model of affine-linear logic. This connection yields an affine-linear language for processes, automatically respecting open-map bisi......-map bisimulation, in which a range of process operations can be expressed. An operational semantics is provided for the tensor fragment of the language. Different ways to make assemblies of processes lead to different choices of exponential, some of which respect bisimulation.......The meaning and mathematical consequences of linearity (managing without a presumed ability to copy) are studied for a path-based model of processes which is also a model of affine-linear logic. This connection yields an affine-linear language for processes, automatically respecting open...

  5. Multimodal Processes Rescheduling

    DEFF Research Database (Denmark)

    Bocewicz, Grzegorz; Banaszak, Zbigniew A.; Nielsen, Peter;

    2013-01-01

    Cyclic scheduling problems concerning multimodal processes are usually observed in FMSs producing multi-type parts where the Automated Guided Vehicles System (AGVS) plays a role of a material handling system. Schedulability analysis of concurrently flowing cyclic processes (SCCP) exe-cuted in the......Cyclic scheduling problems concerning multimodal processes are usually observed in FMSs producing multi-type parts where the Automated Guided Vehicles System (AGVS) plays a role of a material handling system. Schedulability analysis of concurrently flowing cyclic processes (SCCP) exe......-cuted in these kinds of systems can be considered using a declarative modeling framework. Proposed representation provides a unified way for performance evaluation of local cyclic as well as supported by them multimodal processes. The main question regards of reachability of a SCCP cyclic behavior. In this context......, the sufficient conditions guarantee the reachability of both local and multimodal processes cyclic steady state spaces are discussed....

  6. NASA Hazard Analysis Process

    Science.gov (United States)

    Deckert, George

    2010-01-01

    This viewgraph presentation reviews The NASA Hazard Analysis process. The contents include: 1) Significant Incidents and Close Calls in Human Spaceflight; 2) Subsystem Safety Engineering Through the Project Life Cycle; 3) The Risk Informed Design Process; 4) Types of NASA Hazard Analysis; 5) Preliminary Hazard Analysis (PHA); 6) Hazard Analysis Process; 7) Identify Hazardous Conditions; 8) Consider All Interfaces; 9) Work a Preliminary Hazard List; 10) NASA Generic Hazards List; and 11) Final Thoughts

  7. Basic digital signal processing

    CERN Document Server

    Lockhart, Gordon B

    1985-01-01

    Basic Digital Signal Processing describes the principles of digital signal processing and experiments with BASIC programs involving the fast Fourier theorem (FFT). The book reviews the fundamentals of the BASIC program, continuous and discrete time signals including analog signals, Fourier analysis, discrete Fourier transform, signal energy, power. The text also explains digital signal processing involving digital filters, linear time-variant systems, discrete time unit impulse, discrete-time convolution, and the alternative structure for second order infinite impulse response (IIR) sections.

  8. Jointly Poisson processes

    CERN Document Server

    Johnson, D H

    2009-01-01

    What constitutes jointly Poisson processes remains an unresolved issue. This report reviews the current state of the theory and indicates how the accepted but unproven model equals that resulting from the small time-interval limit of jointly Bernoulli processes. One intriguing consequence of these models is that jointly Poisson processes can only be positively correlated as measured by the correlation coefficient defined by cumulants of the probability generating functional.

  9. Process Improvement Essentials

    CERN Document Server

    Persse, James R

    2006-01-01

    Process Improvement Essentials combines the foundation needed to understand process improvement theory with the best practices to help individuals implement process improvement initiatives in their organization. The three leading programs: ISO 9001:2000, CMMI, and Six Sigma--amidst the buzz and hype--tend to get lumped together under a common label. This book delivers a combined guide to all three programs, compares their applicability, and then sets the foundation for further exploration.

  10. Hierarchical Dirichlet Scaling Process

    OpenAIRE

    Kim, Dongwoo; Oh, Alice

    2014-01-01

    We present the \\textit{hierarchical Dirichlet scaling process} (HDSP), a Bayesian nonparametric mixed membership model. The HDSP generalizes the hierarchical Dirichlet process (HDP) to model the correlation structure between metadata in the corpus and mixture components. We construct the HDSP based on the normalized gamma representation of the Dirichlet process, and this construction allows incorporating a scaling function that controls the membership probabilities of the mixture components. ...

  11. Operating System Process Schedulers

    OpenAIRE

    ŠEKORANJA, MATEJ

    2016-01-01

    Process scheduling is one of the key tasks of every operating system. Proper implementation of a scheduler reflects itself in a system responsiveness, especially when processes require execution in real-time. Multimedia playback is one of these processes, also being one of the most common operating system tasks nowadays. In the beginning of this thesis, I present theoretical basics of scheduling: its goals, different scheduling types and basics algorithms. I cover scheduling in single-proces...

  12. Polygon mesh processing

    CERN Document Server

    Botsch, Mario; Pauly, Mark; Alliez, Pierre; Levy, Bruno

    2010-01-01

    Geometry processing, or mesh processing, is a fast-growing area of research that uses concepts from applied mathematics, computer science, and engineering to design efficient algorithms for the acquisition, reconstruction, analysis, manipulation, simulation, and transmission of complex 3D models. Applications of geometry processing algorithms already cover a wide range of areas from multimedia, entertainment, and classical computer-aided design, to biomedical computing, reverse engineering, and scientific computing. Over the last several years, triangle meshes have become increasingly popular,

  13. Business process transformation

    CERN Document Server

    Grover, Varun

    2015-01-01

    Featuring contributions from prominent thinkers and researchers, this volume in the ""Advances in Management Information Systems"" series provides a rich set of conceptual, empirical, and introspective studies that epitomize fundamental knowledge in the area of Business Process Transformation. Processes are interpreted broadly to include operational and managerial processes within and between organizations, as well as those involved in knowledge generation. Transformation includes radical and incremental change, its conduct, management, and outcome. The editors and contributing authors pay clo

  14. Multiphoton processes: conference proceedings

    Energy Technology Data Exchange (ETDEWEB)

    Lambropoulos, P.; Smith, S.J. (eds.)

    1984-01-01

    The chapters of this volume represent the invited papers delivered at the conference. They are arranged according to thermatic proximity beginning with atoms and continuing with molecules and surfaces. Section headings include multiphoton processes in atoms, field fluctuations and collisions in multiphoton process, and multiphoton processes in molecules and surfaces. Abstracts of individual items from the conference were prepared separately for the data base. (GHT)

  15. The Recruitment Process:

    DEFF Research Database (Denmark)

    Holm, Anna

    The aim of this research was to determine whether the introduction of e-recruitment has an impact on the process and underlying tasks, subtasks and activities of recruitment. Three large organizations with well-established e-recruitment practices were included in the study. The three case studies......, which were carried out in Denmark in 2008-2009 using qualitative research methods, revealed changes in the sequence, divisibility and repetitiveness of a number of recruitment tasks and subtasks. The new recruitment process design was identified and presented in the paper. The study concluded...... that the main task of the process shifted from processing applications to communicating with candidates....

  16. The Critical Design Process

    DEFF Research Database (Denmark)

    Brunsgaard, Camilla; Knudstrup, Mary-Ann; Heiselberg, Per

    2014-01-01

    within Danish tradition of architecture and construction. The objective of the research presented in this paper, is to compare the different design processes behind the making of passive houses in a Danish context. We evaluated the process with regard to the integrated and traditional design process....... Data analysis showed that the majority of the consortiums worked in an integrated manner; though there was room for improvment. Additionally, the paper discusses the challanges of implementing the integrated design process in practice and suggests ways of overcomming some of the barriers . In doing so...

  17. Living olefin polymerization processes

    Science.gov (United States)

    Schrock, Richard R.; Baumann, Robert

    1999-01-01

    Processes for the living polymerization of olefin monomers with terminal carbon-carbon double bonds are disclosed. The processes employ initiators that include a metal atom and a ligand having two group 15 atoms and a group 16 atom or three group 15 atoms. The ligand is bonded to the metal atom through two anionic or covalent bonds and a dative bond. The initiators are particularly stable under reaction conditions in the absence of olefin monomer. The processes provide polymers having low polydispersities, especially block copolymers having low polydispersities. It is an additional advantage of these processes that, during block copolymer synthesis, a relatively small amount of homopolymer is formed.

  18. Financial information processing

    Institute of Scientific and Technical Information of China (English)

    Shuo BAI; Shouyang WANG; Lean YU; Aoying ZHOU

    2009-01-01

    @@ The rapid growth in financial data volume has made financial information processing more and more difficult due to the increase in complexity, which has forced businesses and academics alike to turn to sophisticated information processing technologies for better solutions. A typical feature is that high-performance computers and advanced computational techniques play ever-increasingly important roles for business and industries to have competitive advantages. Accordingly, financial information processing has emerged as a new cross-disciplinary field integrating computer science, mathematics, financial economics, intelligent techniques, and computer simulations to make different decisions based on processed financial information.

  19. Process modeling style

    CERN Document Server

    Long, John

    2014-01-01

    Process Modeling Style focuses on other aspects of process modeling beyond notation that are very important to practitioners. Many people who model processes focus on the specific notation used to create their drawings. While that is important, there are many other aspects to modeling, such as naming, creating identifiers, descriptions, interfaces, patterns, and creating useful process documentation. Experience author John Long focuses on those non-notational aspects of modeling, which practitioners will find invaluable. Gives solid advice for creating roles, work produ

  20. Acoustic Signal Processing

    Science.gov (United States)

    Hartmann, William M.; Candy, James V.

    Signal processing refers to the acquisition, storage, display, and generation of signals - also to the extraction of information from signals and the re-encoding of information. As such, signal processing in some form is an essential element in the practice of all aspects of acoustics. Signal processing algorithms enable acousticians to separate signals from noise, to perform automatic speech recognition, or to compress information for more efficient storage or transmission. Signal processing concepts are the building blocks used to construct models of speech and hearing. Now, in the 21st century, all signal processing is effectively digital signal processing. Widespread access to high-speed processing, massive memory, and inexpensive software make signal processing procedures of enormous sophistication and power available to anyone who wants to use them. Because advanced signal processing is now accessible to everybody, there is a need for primers that introduce basic mathematical concepts that underlie the digital algorithms. The present handbook chapter is intended to serve such a purpose.

  1. Cooperative internal conversion process

    CERN Document Server

    Kálmán, Péter

    2015-01-01

    A new phenomenon, called cooperative internal conversion process, in which the coupling of bound-free electron and neutron transitions due to the dipole term of their Coulomb interaction permits cooperation of two nuclei leading to neutron exchange if it is allowed by energy conservation, is discussed theoretically. General expression of the cross section of the process is reported in one particle nuclear and spherical shell models as well in the case of free atoms (e.g. noble gases). A half-life characteristic of the process is also determined. The case of $Ne$ is investigated numerically. The process may have significance in fields of nuclear waste disposal and nuclear energy production.

  2. Fuels Processing Laboratory

    Data.gov (United States)

    Federal Laboratory Consortium — NETL’s Fuels Processing Laboratory in Morgantown, WV, provides researchers with the equipment they need to thoroughly explore the catalytic issues associated with...

  3. Chemical process hazards analysis

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-02-01

    The Office of Worker Health and Safety (EH-5) under the Assistant Secretary for the Environment, Safety and Health of the US Department (DOE) has published two handbooks for use by DOE contractors managing facilities and processes covered by the Occupational Safety and Health Administration (OSHA) Rule for Process Safety Management of Highly Hazardous Chemicals (29 CFR 1910.119), herein referred to as the PSM Rule. The PSM Rule contains an integrated set of chemical process safety management elements designed to prevent chemical releases that can lead to catastrophic fires, explosions, or toxic exposures. The purpose of the two handbooks, ``Process Safety Management for Highly Hazardous Chemicals`` and ``Chemical Process Hazards Analysis,`` is to facilitate implementation of the provisions of the PSM Rule within the DOE. The purpose of this handbook ``Chemical Process Hazards Analysis,`` is to facilitate, within the DOE, the performance of chemical process hazards analyses (PrHAs) as required under the PSM Rule. It provides basic information for the performance of PrHAs, and should not be considered a complete resource on PrHA methods. Likewise, to determine if a facility is covered by the PSM rule, the reader should refer to the handbook, ``Process Safety Management for Highly Hazardous Chemicals`` (DOE- HDBK-1101-96). Promulgation of the PSM Rule has heightened the awareness of chemical safety management issues within the DOE. This handbook is intended for use by DOE facilities and processes covered by the PSM rule to facilitate contractor implementation of the PrHA element of the PSM Rule. However, contractors whose facilities and processes not covered by the PSM Rule may also use this handbook as a basis for conducting process hazards analyses as part of their good management practices. This handbook explains the minimum requirements for PrHAs outlined in the PSM Rule. Nowhere have requirements been added beyond what is specifically required by the rule.

  4. EARSEC SAR processing system

    Science.gov (United States)

    Protheroe, Mark; Sloggett, David R.; Sieber, Alois J.

    1994-12-01

    Traditionally, the production of high quality Synthetic Aperture Radar imagery has been an area where a potential user would have to expend large amounts of money in either the bespoke development of a processing chain dedicated to his requirements or in the purchase of a dedicated hardware platform adapted using accelerator boards and enhanced memory management. Whichever option the user adopted there were limitations based on the desire for a realistic throughput in data load and time. The user had a choice, made early in the purchase, for either a system that adopted innovative algorithmic manipulation, to limit the processing time of the purchase of expensive hardware. The former limits the quality of the product, while the latter excludes the user from any visibility into the processing chain. Clearly there was a need for a SAR processing architecture that gave the user a choice into the methodology to be adopted for a particular processing sequence, allowing him to decide on either a quick (lower quality) product or a detailed slower (high quality) product, without having to change the algorithmic base of his processor or the hardware platform. The European Commission, through the Advanced Techniques unit of the Joint Research Centre (JRC) Institute for Remote Sensing at Ispra in Italy, realizing the limitations on current processing abilities, initiated its own program to build airborne SAR and Electro-Optical (EO) sensor systems. This program is called the European Airborne Remote Sensing Capabilities (EARSEC) program. This paper describes the processing system developed for the airborne SAR sensor system. The paper considers the requirements for the system and the design of the EARSEC Airborne SAR Processing System. It highlights the development of an open SAR processing architecture where users have full access to intermediate products that arise from each of the major processing stages. It also describes the main processing stages in the overall

  5. Facilitated exclusion process and Pfaffian Schur processes

    OpenAIRE

    Baik, Jinho; Barraquand, Guillaume; Corwin, Ivan; Suidan, Toufic

    2016-01-01

    We study the Facilitated TASEP, an interacting particle system on the one dimensional integer lattice. We prove that starting from step initial condition, the position of the rightmost particle has Tracy Widom GSE statistics on a cube root time scale, while the statistics in the bulk of the rarefaction fan are GUE. This uses a mapping with last-passage percolation in a half-quadrant, which we study using the formalism of Pfaffian Schur processes. For the model with exponential weights, we pro...

  6. Modeling soil processes

    NARCIS (Netherlands)

    Vereecken, H.; Schnepf, A.; Hopmans, J.W.; Javaux, M.; Or, D.; Roose, T.; Vanderborght, J.; Young, M.H.; Amelung, W.; Aitkenhead, M.; Allison, S.D.; Assouline, S.; Baveye, P.; Berli, M.; Brüggemann, N.; Finke, P.; Flury, M.; Gaiser, T.; Govers, G.; Ghezzehei, T.; Hallett, P.; Hendricks Franssen, H.J.; Heppell, J.; Horn, R.; Huisman, J.A.; Jacques, D.; Jonard, F.; Kollet, S.; Lafolie, F.; Lamorski, K.; Leitner, D.; Mcbratney, A.; Minasny, B.; Montzka, C.; Nowak, W.; Pachepsky, Y.; Padarian, J.; Romano, N.; Roth, K.; Rothfuss, Y.; Rowe, E.C.; Schwen, A.; Šimůnek, J.; Tiktak, A.; Dam, van Jos; Zee, van der S.E.A.T.M.; Vogel, H.J.; Vrugt, J.A.; Wöhling, T.; Wöhling, T.; Young, I.M.

    2016-01-01

    The remarkable complexity of soil and its importance to a wide range of ecosystem services presents major challenges to the modeling of soil processes. Although major progress in soil models has occurred in the last decades, models of soil processes remain disjointed between disciplines or ecosys

  7. Shell Higher Olefins Process.

    Science.gov (United States)

    Lutz, E. F.

    1986-01-01

    Shows how olefin isomerization and the exotic olefin metathesis reaction can be harnessed in industrial processes. Indicates that the Shell Higher Olefins Process makes use of organometallic catalysts to manufacture alpha-olefins and internal carbon-11 through carbon-14 alkenes in a flexible fashion that can be adjusted to market needs. (JN)

  8. Kuhlthau's Information Search Process.

    Science.gov (United States)

    Shannon, Donna

    2002-01-01

    Explains Kuhlthau's Information Search Process (ISP) model which is based on a constructivist view of learning and provides a framework for school library media specialists for the design of information services and instruction. Highlights include a shift from library skills to information skills; attitudes; process approach; and an interview with…

  9. Ultrahigh bandwidth signal processing

    DEFF Research Database (Denmark)

    Oxenløwe, Leif Katsuo

    2016-01-01

    Optical time lenses have proven to be very versatile for advanced optical signal processing. Based on a controlled interplay between dispersion and phase-modulation by e.g. four-wave mixing, the processing is phase-preserving, an hence useful for all types of data signals including coherent multi...

  10. The Analytical Hierarchy Process

    DEFF Research Database (Denmark)

    Barfod, Michael Bruhn

    2007-01-01

    The technical note gathers the theory behind the Analytical Hierarchy Process (AHP) and present its advantages and disadvantages in practical use.......The technical note gathers the theory behind the Analytical Hierarchy Process (AHP) and present its advantages and disadvantages in practical use....

  11. Dosimetry in process control

    International Nuclear Information System (INIS)

    Measurement of absorbed dose and dose distribution in irradiated medical products relies on the use of quality dosimetry systems, trained personnel and a thorough understanding of the energy deposition process. The interrelationship of these factors will be discussed with emphasis on the current and future practices of process control dosimetry. (author)

  12. Contaminated nickel scrap processing

    International Nuclear Information System (INIS)

    The DOE will soon choose between treating contaminated nickel scrap as a legacy waste and developing high-volume nickel decontamination processes. In addition to reducing the volume of legacy wastes, a decontamination process could make 200,000 tons of this strategic metal available for domestic use. Contaminants in DOE nickel scrap include 234Th, 234Pa, 137Cs, 239Pu (trace), 60Co, U, 99Tc, and 237Np (trace). This report reviews several industrial-scale processes -- electrorefining, electrowinning, vapormetallurgy, and leaching -- used for the purification of nickel. Conventional nickel electrolysis processes are particularly attractive because they use side-stream purification of process solutions to improve the purity of nickel metal. Additionally, nickel purification by electrolysis is effective in a variety of electrolyte systems, including sulfate, chloride, and nitrate. Conventional electrorefining processes typically use a mixed electrolyte which includes sulfate, chloride, and borate. The use of an electrorefining or electrowinning system for scrap nickel recovery could be combined effectively with a variety of processes, including cementation, solvent extraction, ion exchange, complex-formation, and surface sorption, developed for uranium and transuranic purification. Selected processes were reviewed and evaluated for use in nickel side-stream purification. 80 refs

  13. Mineral Processing Technology Roadmap

    Energy Technology Data Exchange (ETDEWEB)

    none,

    2000-09-01

    This document represents the roadmap for Processing Technology Research in the US Mining Industry. It was developed based on the results of a Processing Technology Roadmap Workshop sponsored by the National Mining Association in conjunction with the US Department of Energy, Office of Energy Efficiency and Renewable Energy, Office of Industrial Technologies. The Workshop was held January 24 - 25, 2000.

  14. Food processing and allergenicity.

    Science.gov (United States)

    Verhoeckx, Kitty C M; Vissers, Yvonne M; Baumert, Joseph L; Faludi, Roland; Feys, Marcel; Flanagan, Simon; Herouet-Guicheney, Corinne; Holzhauser, Thomas; Shimojo, Ryo; van der Bolt, Nieke; Wichers, Harry; Kimber, Ian

    2015-06-01

    Food processing can have many beneficial effects. However, processing may also alter the allergenic properties of food proteins. A wide variety of processing methods is available and their use depends largely on the food to be processed. In this review the impact of processing (heat and non-heat treatment) on the allergenic potential of proteins, and on the antigenic (IgG-binding) and allergenic (IgE-binding) properties of proteins has been considered. A variety of allergenic foods (peanuts, tree nuts, cows' milk, hens' eggs, soy, wheat and mustard) have been reviewed. The overall conclusion drawn is that processing does not completely abolish the allergenic potential of allergens. Currently, only fermentation and hydrolysis may have potential to reduce allergenicity to such an extent that symptoms will not be elicited, while other methods might be promising but need more data. Literature on the effect of processing on allergenic potential and the ability to induce sensitisation is scarce. This is an important issue since processing may impact on the ability of proteins to cause the acquisition of allergic sensitisation, and the subject should be a focus of future research. Also, there remains a need to develop robust and integrated methods for the risk assessment of food allergenicity.

  15. Relational Processing Following Stroke

    Science.gov (United States)

    Andrews, Glenda; Halford, Graeme S.; Shum, David; Maujean, Annick; Chappell, Mark; Birney, Damian

    2013-01-01

    The research examined relational processing following stroke. Stroke patients (14 with frontal, 30 with non-frontal lesions) and 41 matched controls completed four relational processing tasks: sentence comprehension, Latin square matrix completion, modified Dimensional Change Card Sorting, and n-back. Each task included items at two or three…

  16. Hybrid quantum information processing

    Energy Technology Data Exchange (ETDEWEB)

    Furusawa, Akira [Department of Applied Physics, School of Engineering, The University of Tokyo (Japan)

    2014-12-04

    I will briefly explain the definition and advantage of hybrid quantum information processing, which is hybridization of qubit and continuous-variable technologies. The final goal would be realization of universal gate sets both for qubit and continuous-variable quantum information processing with the hybrid technologies. For that purpose, qubit teleportation with a continuousvariable teleporter is one of the most important ingredients.

  17. Hybrid quantum information processing

    Science.gov (United States)

    Furusawa, Akira

    2014-12-01

    I will briefly explain the definition and advantage of hybrid quantum information processing, which is hybridization of qubit and continuous-variable technologies. The final goal would be realization of universal gate sets both for qubit and continuous-variable quantum information processing with the hybrid technologies. For that purpose, qubit teleportation with a continuousvariable teleporter is one of the most important ingredients.

  18. Image processing mini manual

    Science.gov (United States)

    Matthews, Christine G.; Posenau, Mary-Anne; Leonard, Desiree M.; Avis, Elizabeth L.; Debure, Kelly R.; Stacy, Kathryn; Vonofenheim, Bill

    1992-01-01

    The intent is to provide an introduction to the image processing capabilities available at the Langley Research Center (LaRC) Central Scientific Computing Complex (CSCC). Various image processing software components are described. Information is given concerning the use of these components in the Data Visualization and Animation Laboratory at LaRC.

  19. Hyperspectral image processing methods

    Science.gov (United States)

    Hyperspectral image processing refers to the use of computer algorithms to extract, store and manipulate both spatial and spectral information contained in hyperspectral images across the visible and near-infrared portion of the electromagnetic spectrum. A typical hyperspectral image processing work...

  20. Technologies for Optical Processing

    DEFF Research Database (Denmark)

    Stubkjær, Kristian

    2008-01-01

    The article consists of a Powerpoint presentation on technologies for optical processing. The paper concludes that the nonlinear elements based on SOA, fibers and waveguide structures have capabilities of simple processing at data rates of 100-600 Gb/s. Switching powers comparable to electronics...

  1. Uranium processing and properties

    CERN Document Server

    2013-01-01

    Covers a broad spectrum of topics and applications that deal with uranium processing and the properties of uranium Offers extensive coverage of both new and established practices for dealing with uranium supplies in nuclear engineering Promotes the documentation of the state-of-the-art processing techniques utilized for uranium and other specialty metals

  2. Microsystem process networks

    Science.gov (United States)

    Wegeng, Robert S.; TeGrotenhuis, Ward E.; Whyatt, Greg A.

    2006-10-24

    Various aspects and applications of microsystem process networks are described. The design of many types of microsystems can be improved by ortho-cascading mass, heat, or other unit process operations. Microsystems having exergetically efficient microchannel heat exchangers are also described. Detailed descriptions of numerous design features in microcomponent systems are also provided.

  3. Laser processing of plastics

    Science.gov (United States)

    Atanasov, Peter A.

    1995-03-01

    CO2-laser processing of plastics has been studied experimentally and theoretically. Welding of cylindrical parts made from polycarbonate and polypropylene, cutting of polymethyl-methacrylate plates, and drilling holes in polypropylene are presented as examples. A good coincidence between theoretical and experimental results in case of laser welding has been found. Some practical aspects of laser processing of plastics has been given.

  4. Heavy oils processing materials requirements crude processing

    Energy Technology Data Exchange (ETDEWEB)

    Sloley, Andrew W. [CH2M Hill, Englewood, CO (United States)

    2012-07-01

    Over time, recommended best practices for crude unit materials selection have evolved to accommodate new operating requirements, feed qualities, and product qualities. The shift to heavier oil processing is one of the major changes in crude feed quality occurring over the last 20 years. The three major types of crude unit corrosion include sulfidation attack, naphthenic acid attack, and corrosion resulting from hydrolyzable chlorides. Heavy oils processing makes all three areas worse. Heavy oils have higher sulfur content; higher naphthenic acid content; and are more difficult to desalt, leading to higher chloride corrosion rates. Materials selection involves two major criteria, meeting required safety standards, and optimizing economics of the overall plant. Proper materials selection is only one component of a plant integrity approach. Materials selection cannot eliminate all corrosion. Proper materials selection requires appropriate support from other elements of an integrity protection program. The elements of integrity preservation include: materials selection (type and corrosion allowance); management limits on operating conditions allowed; feed quality control; chemical additives for corrosion reduction; and preventive maintenance and inspection (PMI). The following discussion must be taken in the context of the application of required supporting work in all the other areas. Within that context, specific materials recommendations are made to minimize corrosion due to the most common causes in the crude unit. (author)

  5. Posttranslational processing of progastrin

    DEFF Research Database (Denmark)

    Bundgaard, Jens René; Rehfeld, Jens F.

    2010-01-01

    Gastrin and cholecystokinin (CCK) are homologous hormones with important functions in the brain and the gut. Gastrin is the main regulator of gastric acid secretion and gastric mucosal growth, whereas cholecystokinin regulates gall bladder emptying, pancreatic enzyme secretion and besides acts...... processing progastrin is often greatly disturbed in neoplastic cells.The posttranslational phase of the biogenesis of gastrin and the various progastrin products in gastrin gene-expressing tissues is now reviewed here. In addition, the individual contributions of the processing enzymes are discussed......, as are structural features of progastrin that are involved in the precursor activation process. Thus, the review describes how the processing depends on the cell-specific expression of the processing enzymes and kinetics in the secretory pathway....

  6. Business process support

    Energy Technology Data Exchange (ETDEWEB)

    Carle, Adriana; Fiducia, Daniel [Transportadora de Gas del Sur S.A. (TGS), Buenos Aires (Argentina)

    2005-07-01

    This paper is about the own development of business support software. The developed applications are used to support two business processes: one of them is the process of gas transportation and the other is the natural gas processing. This software has interphases with the ERP SAP, software SCADA and on line gas transportation simulation software. The main functionalities of the applications are: entrance on line real time of clients transport nominations, transport programming, allocation of the clients transport nominations, transport control, measurements, balanced pipeline, allocation of gas volume to the gas processing plants, calculate of product tons processed in each plant and tons of product distributed to clients. All the developed software generates information to the internal staff, regulatory authorities and clients. (author)

  7. Beryllium chemistry and processing

    CERN Document Server

    Walsh, Kenneth A

    2009-01-01

    This book introduces beryllium; its history, its chemical, mechanical, and physical properties including nuclear properties. The 29 chapters include the mineralogy of beryllium and the preferred global sources of ore bodies. The identification and specifics of the industrial metallurgical processes used to form oxide from the ore and then metal from the oxide are thoroughly described. The special features of beryllium chemistry are introduced, including analytical chemical practices. Beryllium compounds of industrial interest are identified and discussed. Alloying, casting, powder processing, forming, metal removal, joining and other manufacturing processes are covered. The effect of composition and process on the mechanical and physical properties of beryllium alloys assists the reader in material selection. The physical metallurgy chapter brings conformity between chemical and physical metallurgical processing of beryllium, metal, alloys, and compounds. The environmental degradation of beryllium and its all...

  8. Managing Software Process Evolution

    DEFF Research Database (Denmark)

    This book focuses on the design, development, management, governance and application of evolving software processes that are aligned with changing business objectives, such as expansion to new domains or shifting to global production. In the context of an evolving business world, it examines...... the complete software process lifecycle, from the initial definition of a product to its systematic improvement. In doing so, it addresses difficult problems, such as how to implement processes in highly regulated domains or where to find a suitable notation system for documenting processes, and provides...... essential insights and tips to help readers manage process evolutions. And last but not least, it provides a wealth of examples and cases on how to deal with software evolution in practice. Reflecting these topics, the book is divided into three parts. Part 1 focuses on software business transformation...

  9. Organic food processing

    DEFF Research Database (Denmark)

    Kahl, Johannes; Alborzi, Farnaz; Beck, Alexander;

    2014-01-01

    In 2007 EU Regulation (EC) 834/2007 introduced principles and criteria for organic food processing. These regulations have been analysed and discussed in several scientific publications and research project reports. Recently, organic food quality was described by principles, aspects and criteria....... These principles from organic agriculture were verified and adapted for organic food processing. Different levels for evaluation were suggested. In another document, underlying paradigms and consumer perception of organic food were reviewed against functional food, resulting in identifying integral product...... to evaluate processing methods. Therefore the goal of this paper is to describe and discuss the topic of organic food processing to make it operational. A conceptual background for organic food processing is given by verifying the underlying paradigms and principles of organic farming and organic food as well...

  10. Food Process Engineering

    DEFF Research Database (Denmark)

    Friis, Alan; Jensen, Bo Boye Busk; Risum, Jørgen

    introduced make it possible to get an overview of processes. We have included a chapter on how to make block-dia¬grams and material balances. This should help in analysing a production and to isolate the most important processing steps. Most processes in a food production are of physical nature, thus we have...... included a chapter on relevant physical properties of foods and especially a part on rheological properties of food products. The remaining text is focused on the processes transport of fluids, transport of heat and transport of energy. The textbook ends with a chapter on heat exchangers and how...... to calculate the requirements of heat processing. Our goal is to put food engineering into a production context. Other courses teach food chemistry, food microbiology and food technology. Topics of great importance and all have to be seen in a broader context of producing good and safe food in a large scale...

  11. Nonhomogeneous fractional Poisson processes

    Energy Technology Data Exchange (ETDEWEB)

    Wang Xiaotian [School of Management, Tianjin University, Tianjin 300072 (China)]. E-mail: swa001@126.com; Zhang Shiying [School of Management, Tianjin University, Tianjin 300072 (China); Fan Shen [Computer and Information School, Zhejiang Wanli University, Ningbo 315100 (China)

    2007-01-15

    In this paper, we propose a class of non-Gaussian stationary increment processes, named nonhomogeneous fractional Poisson processes W{sub H}{sup (j)}(t), which permit the study of the effects of long-range dependance in a large number of fields including quantum physics and finance. The processes W{sub H}{sup (j)}(t) are self-similar in a wide sense, exhibit more fatter tail than Gaussian processes, and converge to the Gaussian processes in distribution in some cases. In addition, we also show that the intensity function {lambda}(t) strongly influences the existence of the highest finite moment of W{sub H}{sup (j)}(t) and the behaviour of the tail probability of W{sub H}{sup (j)}(t)

  12. New Processes for Annulation

    Institute of Scientific and Technical Information of China (English)

    Liu Hsing-Jang

    2004-01-01

    Making use of the high propensity of 2-cyano-2-cycloalkenones to undergo conjugate addition with various carbanions and the high reactivity of the ensuing α -cyano ketone system, a number of new annulation processes have been developed recently in our laboratories. As shown in Eq. 1 (n=1) with a specific example, one such process involves the addition of 3-butenylmagnesium bromide, followed by a palladium (Ⅱ) acetate mediated oxidative cyclization, to facilitate methylenecyclopentane ring formation. This annulation process could be readily extended to effect methylenecyclohexane ring formation (Eq. 1, n=2), using 4-pentenylmagnesinm bromide as the initial reagent, and to install the carbomethoxy-substituted methylenecyclopentane and methylenecyclohexane rings, using the carbanions derived from methyl 4-pentenoate and methyl 5-hexenoate, respectively (Eq. 2). In another annulation process, the addition of the enolate of methyl 5-chloropentanoate is involved initially, and the ring formation is readily effected by an intramolecular alkylation process. A specific example is given in Eq. 3.

  13. Logistics Innovation Process Revisited

    DEFF Research Database (Denmark)

    Gammelgaard, Britta; Su, Shong-Iee Ivan; Yang, Su-Lan

    2011-01-01

    that was triggered by the practical needs of new ways of handling material flows of a hospital. This approach made it possible to revisit theory on logistics innovation process. Findings – Apart from the tangible benefits reported to the case hospital, five findings can be extracted from this study: the logistics...... on internal stakeholders as on external relationships; and logistics innovation process may start out as a dialectic, conflict ridden process and end up in a well-ordered goal-oriented teleological process. Research limitations/implications – In general, the study contributes to the knowledge base...... on an existing model by methodological triangulation in order to learn more about the qualities of actual processes and their implications for theory and practice....

  14. Manufacturing processes 4 forming

    CERN Document Server

    Klocke, Fritz

    2013-01-01

    This book provides essential information on metal forming, utilizing a practical distinction between bulk and sheet metal forming. In the field of bulk forming, it examines processes of cold, warm and hot bulk forming, as well as rolling and a new addition, the process of thixoforming. As for the field of sheet metal working, on the one hand it deals with sheet metal forming processes (deep drawing, flange forming, stretch drawing, metal spinning and bending). In terms of special processes, the chapters on internal high-pressure forming and high rate forming have been revised and refined. On the other, the book elucidates and presents the state of the art in sheet metal separation processes (shearing and fineblanking). Furthermore, joining by forming has been added to the new edition as a new chapter describing mechanical methods for joining sheet metals. The new chapter “Basic Principles” addresses both sheet metal and bulk forming, in addition to metal physics, plastomechanics and computational basics; ...

  15. In Process Beam Monitoring

    Science.gov (United States)

    Steen, W. M.; Weerasinghe, V. M.

    1986-11-01

    The industrial future of lasers in material processing lies in the combination of the laser with automatic machinery. One possible form of such a combination is an intelligent workstation which monitors the process as it occurs and adjusts itself accordingly, either by self teaching or by comparison to a process data bank or algorithm. In order to achieve this attractive goal in-process signals are required. Two devices are described in this paper. One is the Laser Beam Analyser which is now maturing into a second generation with computerised output. The other is the Acoustic Mirror, a totally novel analytic technique, not yet fully understood, but which nevertheless can act as a very effective process monitor.

  16. Quantum independent increment processes

    CERN Document Server

    Franz, Uwe

    2006-01-01

    This is the second of two volumes containing the revised and completed notes of lectures given at the school "Quantum Independent Increment Processes: Structure and Applications to Physics". This school was held at the Alfried-Krupp-Wissenschaftskolleg in Greifswald in March, 2003, and supported by the Volkswagen Foundation. The school gave an introduction to current research on quantum independent increment processes aimed at graduate students and non-specialists working in classical and quantum probability, operator algebras, and mathematical physics. The present second volume contains the following lectures: "Random Walks on Finite Quantum Groups" by Uwe Franz and Rolf Gohm, "Quantum Markov Processes and Applications in Physics" by Burkhard Kümmerer, Classical and Free Infinite Divisibility and Lévy Processes" by Ole E. Barndorff-Nielsen, Steen Thorbjornsen, and "Lévy Processes on Quantum Groups and Dual Groups" by Uwe Franz.

  17. Beyond the search process

    DEFF Research Database (Denmark)

    Hyldegård, Jette

    2009-01-01

    This paper reports on the findings from a longitudinal case study exploring Kuhlthau's information search process (ISP)-model in a group based academic setting. The research focus is on group members' activities and cognitive and emotional experiences during the task process of writing an assignm......This paper reports on the findings from a longitudinal case study exploring Kuhlthau's information search process (ISP)-model in a group based academic setting. The research focus is on group members' activities and cognitive and emotional experiences during the task process of writing....... It is concluded that the ISP-model does not fully comply with group members' problem solving process and the involved information seeking behavior. Further, complex academic problem solving seems to be even more complex when it is performed in a group based setting. The study contributes with a new conceptual...

  18. Formed HIP Can Processing

    Energy Technology Data Exchange (ETDEWEB)

    Clarke, Kester Diederik [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2015-07-27

    The intent of this report is to document a procedure used at LANL for HIP bonding aluminum cladding to U-10Mo fuel foils using a formed HIP can for the Domestic Reactor Conversion program in the NNSA Office of Material, Management and Minimization, and provide some details that may not have been published elsewhere. The HIP process is based on the procedures that have been used to develop the formed HIP can process, including the baseline process developed at Idaho National Laboratory (INL). The HIP bonding cladding process development is summarized in the listed references. Further iterations with Babcock & Wilcox (B&W) to refine the process to meet production and facility requirements is expected.

  19. Branching processes in biology

    CERN Document Server

    Kimmel, Marek

    2015-01-01

    This book provides a theoretical background of branching processes and discusses their biological applications. Branching processes are a well-developed and powerful set of tools in the field of applied probability. The range of applications considered includes molecular biology, cellular biology, human evolution and medicine. The branching processes discussed include Galton-Watson, Markov, Bellman-Harris, Multitype, and General Processes. As an aid to understanding specific examples, two introductory chapters, and two glossaries are included that provide background material in mathematics and in biology. The book will be of interest to scientists who work in quantitative modeling of biological systems, particularly probabilists, mathematical biologists, biostatisticians, cell biologists, molecular biologists, and bioinformaticians. The authors are a mathematician and cell biologist who have collaborated for more than a decade in the field of branching processes in biology for this new edition. This second ex...

  20. Revealing the programming process

    DEFF Research Database (Denmark)

    Bennedsen, Jens; Caspersen, Michael Edelgaard

    2005-01-01

    One of the most important goals of an introductory programming course is that the students learn a systematic approach to the development of computer programs. Revealing the programming process is an important part of this; however, textbooks do not address the issue -- probably because the textb......One of the most important goals of an introductory programming course is that the students learn a systematic approach to the development of computer programs. Revealing the programming process is an important part of this; however, textbooks do not address the issue -- probably because...... the textbook medium is static and therefore ill-suited to expose the process of programming. We have found that process recordings in the form of captured narrated programming sessions are a simple, cheap, and efficient way of providing the revelation.We identify seven different elements of the programming...... process for which process recordings are a valuable communication media in order to enhance the learning process. Student feedback indicates both high learning outcome and superior learning potential compared to traditional classroom teaching....

  1. Welding processes handbook

    CERN Document Server

    Weman, Klas

    2003-01-01

    Deals with the main commercially significant and commonly used welding processes. This title takes the student or novice welder through the individual steps involved in each process in an easily understood way. It covers many of the requirements referred to in European Standards including EN719, EN 729, EN 729 and EN 287.$bWelding processes handbook is a concise, explanatory guide to the main commercially significant and commonly-used welding processes. It takes the novice welder or student through the individual steps involved in each process in a clear and easily understood way. It is intended to provide an up-to-date reference to the major applications of welding as they are used in industry. The contents have been arranged so that it can be used as a textbook for European welding courses in accordance with guidelines from the European Welding Federation. Welding processes and equipment necessary for each process are described so that they can be applied to all instruction levels required by the EWF and th...

  2. Influencia de la cantidad de O2 adicionado al CO2 en el gas de protección sobre la microestructura del metal depositado en uniones soldadas de bordes rectos en aceros de bajo contenido de carbono con el proceso GMAW Influence of O2 content, added to CO2 in the shielding gas, on the microstructure of deposited metal in butt welded joint with straight edges, in low carbon steels using GMAW process

    Directory of Open Access Journals (Sweden)

    Eduardo Díaz-Cedré

    2010-12-01

    Full Text Available La presencia de ferrita acicular (FA en la microestructura del cordón de soldadura, dentro de determinado rango de valores, eleva considerablemente la tenacidad de las uniones soldadas. Es por ello, que el presente trabajo trata sobre un estudio que relaciona la cantidad de ferrita acicular en el cordón en función del contenido de oxígeno presente en la mezcla activa CO2+O2, durante la realización de uniones soldadas de bordes rectos en aceros de bajo carbono con el proceso con electrodo fusible y protección gaseosa (GMAW en condiciones invariables de parámetros de proceso (corriente de soldadura, voltaje de arco, velocidad de soldadura, longitud libre y flujo de gas protector. Como resultado del trabajo se estableció la relación gráfica existente entre la ferrita acicular y el contenido de oxígeno en la mezcla.The presence of acicular ferrite (AF in the microstructure of weld bead, in a specified range of values, increase considerably the toughness of welded joints. The present paper, for that reason, study the relationship between the acicular ferrite quantity in the deposited metal and the oxygen present in the active gas mixture of CO2+O2, during the execution of butt welded joints with straight edges, in low carbon steels with consumable electrode and gas protection (GMAW in invariable conditions of process parameters (welding current, arc voltage, welding speed, electrode extension, and gas flow. The graphic relation between the acicular ferrite and the oxygen content was established, as result of the research work.

  3. Monitoring of Microalgal Processes.

    Science.gov (United States)

    Havlik, Ivo; Scheper, Thomas; Reardon, Kenneth F

    2016-01-01

    Process monitoring, which can be defined as the measurement of process variables with the smallest possible delay, is combined with process models to form the basis for successful process control. Minimizing the measurement delay leads inevitably to employing online, in situ sensors where possible, preferably using noninvasive measurement methods with stable, low-cost sensors. Microalgal processes have similarities to traditional bioprocesses but also have unique monitoring requirements. In general, variables to be monitored in microalgal processes can be categorized as physical, chemical, and biological, and they are measured in gaseous, liquid, and solid (biological) phases. Physical and chemical process variables can be usually monitored online using standard industrial sensors. The monitoring of biological process variables, however, relies mostly on sensors developed and validated using laboratory-scale systems or uses offline methods because of difficulties in developing suitable online sensors. Here, we review current technologies for online, in situ monitoring of all types of process parameters of microalgal cultivations, with a focus on monitoring of biological parameters. We discuss newly introduced methods for measuring biological parameters that could be possibly adapted for routine online use, should be preferably noninvasive, and are based on approaches that have been proven in other bioprocesses. New sensor types for measuring physicochemical parameters using optical methods or ion-specific field effect transistor (ISFET) sensors are also discussed. Reviewed methods with online implementation or online potential include measurement of irradiance, biomass concentration by optical density and image analysis, cell count, chlorophyll fluorescence, growth rate, lipid concentration by infrared spectrophotometry, dielectric scattering, and nuclear magnetic resonance. Future perspectives are discussed, especially in the field of image analysis using in situ

  4. Getting Started with Processing

    CERN Document Server

    Reas, Casey

    2010-01-01

    Learn computer programming the easy way with Processing, a simple language that lets you use code to create drawings, animation, and interactive graphics. Programming courses usually start with theory, but this book lets you jump right into creative and fun projects. It's ideal for anyone who wants to learn basic programming, and serves as a simple introduction to graphics for people with some programming skills. Written by the founders of Processing, this book takes you through the learning process one step at a time to help you grasp core programming concepts. You'll learn how to sketch wi

  5. Transnational Learning Processes

    DEFF Research Database (Denmark)

    Nedergaard, Peter

    This paper analyses and compares the transnational learning processes in the employment field in the European Union and among the Nordic countries. Based theoretically on a social constructivist model of learning and methodologically on a questionnaire distributed to the relevant participants......, a number of hypotheses concerning transnational learning processes are tested. The paper closes with a number of suggestions regarding an optimal institutional setting for facilitating transnational learning processes.Key words: Transnational learning, Open Method of Coordination, Learning, Employment......, European Employment Strategy, European Union, Nordic countries....

  6. Lasers in chemical processing

    International Nuclear Information System (INIS)

    The high cost of laser energy is the crucial issue in any potential laser-processing application. It is expensive relative to other forms of energy and to most bulk chemicals. We show those factors that have previously frustrated attempts to find commercially viable laser-induced processes for the production of materials. Having identified the general criteria to be satisfied by an economically successful laser process and shown how these imply the laser-system requirements, we present a status report on the uranium laser isotope separation (LIS) program at the Lawrence Livermore National Laboratory

  7. Digital Differential Geometry Processing

    Institute of Scientific and Technical Information of China (English)

    Xin-Guo Liu; Hu-Jun Bao; Qun-Sheng Peng

    2006-01-01

    The theory and methods of digital geometry processing has been a hot research area in computer graphics, as geometric models serves as the core data for 3D graphics applications. The purpose of this paper is to introduce some recent advances in digital geometry processing, particularly mesh fairing, surface parameterization and mesh editing, that heavily use differential geometry quantities. Some related concepts from differential geometry, such as normal, curvature, gradient,Laplacian and their counterparts on digital geometry are also reviewed for understanding the strength and weakness of various digital geometry processing methods.

  8. Lapis SOI Pixel Process

    OpenAIRE

    Okihara, Masao; Kasai, Hiroki; Miura, Noriyuki; Kuriyama, Naoya; Nagatomo, Yoshiki

    2015-01-01

    0.2 um fully-depleted SOI technology has been developed a for X-ray pixel detectors. To improve the detector performance, some advanced process technologies are developing continuously. To utilize the high resistivity FZ-SOI, slow ramp up and ramp down recipes are applied for the thermal processes in both of SOI wafer fabrication and pixel detector process. The suitable backside treatment is also applied to prevent increase of leakage current at backside damaged layer in the case of full depl...

  9. Plasma processing for VLSI

    CERN Document Server

    Einspruch, Norman G

    1984-01-01

    VLSI Electronics: Microstructure Science, Volume 8: Plasma Processing for VLSI (Very Large Scale Integration) discusses the utilization of plasmas for general semiconductor processing. It also includes expositions on advanced deposition of materials for metallization, lithographic methods that use plasmas as exposure sources and for multiple resist patterning, and device structures made possible by anisotropic etching.This volume is divided into four sections. It begins with the history of plasma processing, a discussion of some of the early developments and trends for VLSI. The second section

  10. Quantum Information Processing

    CERN Document Server

    Leuchs, Gerd

    2005-01-01

    Quantum processing and communication is emerging as a challenging technique at the beginning of the new millennium. This is an up-to-date insight into the current research of quantum superposition, entanglement, and the quantum measurement process - the key ingredients of quantum information processing. The authors further address quantum protocols and algorithms. Complementary to similar programmes in other countries and at the European level, the German Research Foundation (DFG) started a focused research program on quantum information in 1999. The contributions - written by leading experts - bring together the latest results in quantum information as well as addressing all the relevant questions

  11. Irreversible processes kinetic theory

    CERN Document Server

    Brush, Stephen G

    2013-01-01

    Kinetic Theory, Volume 2: Irreversible Processes deals with the kinetic theory of gases and the irreversible processes they undergo. It includes the two papers by James Clerk Maxwell and Ludwig Boltzmann in which the basic equations for transport processes in gases are formulated, together with the first derivation of Boltzmann's ""H-theorem"" and a discussion of this theorem, along with the problem of irreversibility.Comprised of 10 chapters, this volume begins with an introduction to the fundamental nature of heat and of gases, along with Boltzmann's work on the kinetic theory of gases and s

  12. Radioactive waste processing method

    International Nuclear Information System (INIS)

    When granular materials comprising radioactive wastes containing phosphorus are processed at first in a fluidized bed type furnace, if the granular materials are phosphorus-containing activated carbon, granular materials comprising alkali compound such as calcium hydroxide and barium hydroxide are used as fluidizing media. Even granular materials of slow burning speed can be burnt stably in a fluidizing state by high temperature heat of the fluidizing media, thereby enabling to take a long burning processing time. Accordingly, radioactive activated carbon wastes can be processed by burning treatment. (T.M.)

  13. Process of performance assessment

    International Nuclear Information System (INIS)

    Performance assessment is the process used to evaluate the environmental consequences of disposal of radioactive waste in the biosphere. An introductory review of the subject is presented. Emphasis is placed on the process of performance assessment from the standpoint of defining the process. Performance assessment, from evolving experience at DOE sites, has short-term and long-term subprograms, the components of which are discussed. The role of mathematical modeling in performance assessment is addressed including the pros and cons of current approaches. Finally, the system/site/technology issues as the focal point of this symposium are reviewed

  14. Advanced uranium enrichment processes

    International Nuclear Information System (INIS)

    Three advanced Uranium enrichment processes are dealt with in the report: AVLIS (Atomic Vapour LASER Isotope Separation), MLIS (Molecular LASER Isotope Separation) and PSP (Plasma Separation Process). The description of the physical and technical features of the processes constitutes a major part of the report. If further presents comparisons with existing industrially used enrichment technologies, gives information on actual development programmes and budgets and ends with a chapter on perspectives and conclusions. An extensive bibliography of the relevant open literature is added to the different subjects discussed. The report was drawn up by the nuclear research Centre (CEA) Saclay on behalf of the Commission of the European Communities

  15. Study on Glulam Process

    Institute of Scientific and Technical Information of China (English)

    PENG Limin; WANG Haiqing; HE Weili

    2006-01-01

    This paper selected lumbers of Manchurian ash (Fraxinus rnandshurica), Manchurian walnut (Juglans mandshuricd) and Spruce (Picea jezoensis vai.kornamvii) for manufacturing glulam with water-borne polymeric-isocyanate adhesive to determine process variables. The process variables that include specific pressure, pressing time and adhesive application amount influencing the shear strength of the glulam, were investigated through the orthogonal test. The results indicated that optimum process variables for glulam manufacturing were as follows: Specific pressure of 1.5 MPa for Spruce and 2,0 MPa both for Manchurian ash and Manchurian walnut, pressing time of 60 min and adhesive application amount of 250 g/m2.

  16. The image processing handbook

    CERN Document Server

    Russ, John C

    2006-01-01

    Now in its fifth edition, John C. Russ's monumental image processing reference is an even more complete, modern, and hands-on tool than ever before. The Image Processing Handbook, Fifth Edition is fully updated and expanded to reflect the latest developments in the field. Written by an expert with unequalled experience and authority, it offers clear guidance on how to create, select, and use the most appropriate algorithms for a specific application. What's new in the Fifth Edition? ·       A new chapter on the human visual process that explains which visual cues elicit a response from the vie

  17. Nano integrated circuit process

    Energy Technology Data Exchange (ETDEWEB)

    Yoon, Yung Sup

    2004-02-15

    This book contains nine chapters, which are introduction of manufacture of semiconductor chip, oxidation such as Dry-oxidation, wet oxidation, oxidation model and oxide film, diffusion like diffusion process, diffusion equation, diffusion coefficient and diffusion system, ion implantation, including ion distribution, channeling, multiimplantation and masking and its system, sputtering such as CVD and PVD, lithography, wet etch and dry etch, interconnection and flattening like metal-silicon connection, silicide, multiple layer metal process and flattening, an integrated circuit process, including MOSFET and CMOS.

  18. Semi-Markov processes

    CERN Document Server

    Grabski

    2014-01-01

    Semi-Markov Processes: Applications in System Reliability and Maintenance is a modern view of discrete state space and continuous time semi-Markov processes and their applications in reliability and maintenance. The book explains how to construct semi-Markov models and discusses the different reliability parameters and characteristics that can be obtained from those models. The book is a useful resource for mathematicians, engineering practitioners, and PhD and MSc students who want to understand the basic concepts and results of semi-Markov process theory. Clearly defines the properties and

  19. CAPSULE REPORT: EVAPORATION PROCESS

    Science.gov (United States)

    Evaporation has been an established technology in the metal finishing industry for many years. In this process, wastewaters containing reusable materials, such as copper, nickel, or chromium compounds are heated, producing a water vapor that is continuously removed and condensed....

  20. Business Model Process Configurations

    DEFF Research Database (Denmark)

    Taran, Yariv; Nielsen, Christian; Thomsen, Peter;

    2015-01-01

    strategic preference, as part of their business model innovation activity planned. Practical implications – This paper aimed at strengthening researchers and, particularly, practitioner’s perspectives into the field of business model process configurations. By insuring an [abstracted] alignment between......Purpose – The paper aims: 1) To develop systematically a structural list of various business model process configuration and to group (deductively) these selected configurations in a structured typological categorization list. 2) To facilitate companies in the process of BM innovation......, by developing (inductively) an ontological classification framework, in view of the BM process configurations typology developed. Design/methodology/approach – Given the inconsistencies found in the business model studies (e.g. definitions, configurations, classifications) we adopted the analytical induction...

  1. IT Project Prioritization Process

    DEFF Research Database (Denmark)

    Shollo, Arisa; Constantiou, Ioanna

    2013-01-01

    In most of the large companies IT project prioritization process is designed based on principles of evidencebased management. We investigate a case of IT project prioritization in a financial institution, and in particular, how managers practice evidence-based management during this process. We use...... a rich dataset built from a longitudinal study of the prioritization process for the IT projects. Our findings indicate that managers reach a decision not only by using evidence but from the interplay between the evidence and the judgment devices that managers employ. The interplay between evidence...... and judgment devices is manifested in three ways: supplementing, substituting, and interpreting evidence. We show that while evidence does not fully determine the decision, it plays a central role in discussions, reflections, and negotiations during the IT prioritization process....

  2. Assessing Process and Product

    DEFF Research Database (Denmark)

    Bennedsen, Jens; Caspersen, Michael E.

    2006-01-01

    The final assessment of a course must reflect its goals, and contents. An important goal of our introductory programming course is that the students learn a systematic approach for the development of computer programs. Having the programming process as learning objective naturally raises the ques......The final assessment of a course must reflect its goals, and contents. An important goal of our introductory programming course is that the students learn a systematic approach for the development of computer programs. Having the programming process as learning objective naturally raises...... the question how to include this in assessments. Traditional assessments (e.g. oral, written, or multiple choice) are unsuitable to test the programming process. We describe and evaluate a practical lab examination that assesses the students' programming process as well as the developed programs...

  3. Cooperative processing data bases

    Science.gov (United States)

    Hasta, Juzar

    1991-01-01

    Cooperative processing for the 1990's using client-server technology is addressed. The main theme is concepts of downsizing from mainframes and minicomputers to workstations on a local area network (LAN). This document is presented in view graph form.

  4. Ultrasonic Processing of Materials

    Science.gov (United States)

    Han, Qingyou

    2015-08-01

    Irradiation of high-energy ultrasonic vibration in metals and alloys generates oscillating strain and stress fields in solids, and introduces nonlinear effects such as cavitation, acoustic streaming, and radiation pressure in molten materials. These nonlinear effects can be utilized to assist conventional material processing processes. This article describes recent research at Oak Ridge National Labs and Purdue University on using high-intensity ultrasonic vibrations for degassing molten aluminum, processing particulate-reinforced metal matrix composites, refining metals and alloys during solidification process and welding, and producing bulk nanostructures in solid metals and alloys. Research results suggest that high-intensity ultrasonic vibration is capable of degassing and dispersing small particles in molten alloys, reducing grain size during alloy solidification, and inducing nanostructures in solid metals.

  5. Processed Products Database System

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Collection of annual data on processed seafood products. The Division provides authoritative advice, coordination and guidance on matters related to the collection,...

  6. Organ Donation: The Process

    Science.gov (United States)

    ... Español Search Register with your state as an Organ Donor Home Why Donate Becoming a Donor About Donation & ... Plan Your Finances After Your Transplant Contact Your Donor Family Organ Donation: The Process Enrolling as a Donor : The ...

  7. Radiation processing in Japan

    International Nuclear Information System (INIS)

    Economic scale of radiation application in the field of industry, agriculture and medicine in Japan in 1997 was investigated to compare its economic impacts with that of nuclear energy industry. Total production value of radiation application accounted for 54% of nuclear industry including nuclear energy industry and radiation applications in three fields above. Industrial radiation applications were further divided into five groups, namely nondestructive test, RI instruments, radiation facilities, radiation processing and ion beam processing. More than 70% of the total production value was brought about by ion beam processing for use with IC and semiconductors. Future economic prospect of radiation processing of polymers, for example cross-linking, EB curing, graft polymerization and degradation, is reviewed. Particular attention was paid to radiation vulcanization of natural rubber latex and also to degradation of natural polymers. (S. Ohno)

  8. Catalyzing alignment processes

    DEFF Research Database (Denmark)

    Lauridsen, Erik Hagelskjær; Jørgensen, Ulrik

    2004-01-01

    This paper describes how environmental management systems (EMS) spur the circulation of processes that support the constitution of environmental issues as specific environ¬mental objects and objectives. EMS catalyzes alignmentprocesses that produce coherence among the different elements involved ...

  9. Processing NOAA Spectroradiometric Data

    OpenAIRE

    Broenkow, William W.; Greene, Nancy, T.; Feinholz, Michael, E.

    1993-01-01

    This report outlines the NOAA spectroradiometer data processing system implemented by the MLML_DBASE programs. This is done by presenting the algorithms and graphs showing the effects of each step in the algorithms. [PDF contains 32 pages

  10. George: Gaussian Process regression

    Science.gov (United States)

    Foreman-Mackey, Daniel

    2015-11-01

    George is a fast and flexible library, implemented in C++ with Python bindings, for Gaussian Process regression useful for accounting for correlated noise in astronomical datasets, including those for transiting exoplanet discovery and characterization and stellar population modeling.

  11. Enrichment: centrifuge process

    International Nuclear Information System (INIS)

    This short course is divided into three sections devoted respectively to the physics of the process, some practical problems raised by the design of a centrifuge and the present situation of centrifugation in the World. 31 figs., 18 refs

  12. Technology or Process First?

    DEFF Research Database (Denmark)

    Siurdyban, Artur Henryk; Svejvig, Per; Møller, Charles

    Enterprise Systems Management (ESM) and Business Pro- cess Management (BPM), although highly correlated, have evolved as alternative and mutually exclusive approaches to corporate infrastruc- ture. As a result, companies struggle to nd the right balance between technology and process factors...

  13. Processer i undervisningen

    DEFF Research Database (Denmark)

    Bundsgaard, Jeppe

    Undersøgelsen har fokus på processer i undervisningen – og derigennem på hvordan digitale læremidler kan understøtte eller integreres i typiske processer. Undersøgelsen hviler på deltagende observation på Abildgårdskolen i Odense. Gennem observationerne er der identificeret en række eksempler på ...... udfordringer for at gennemføre de undervisningsmæssige processer og givet bud på digitale læremidler der forventes at kunne understøtte processerne. Undersøgelsen viser samtidig hvordan fokus på processer kan fungere som en metode til brugerdreven innovation....

  14. Desalination processes and technologies

    International Nuclear Information System (INIS)

    Reasons of the development of desalination processes, the modern desalination technologies, such as multi-stage flash evaporation, multi-effect distillation, reverse osmosis, and the prospects of using nuclear power for desalination purposes are discussed. 9 refs

  15. Radiation processing in Japan

    Energy Technology Data Exchange (ETDEWEB)

    Makuuchi, Keizo [Japan Atomic Energy Research Inst., Takasaki, Gunma (Japan). Takasaki Radiation Chemistry Research Establishment

    2001-03-01

    Economic scale of radiation application in the field of industry, agriculture and medicine in Japan in 1997 was investigated to compare its economic impacts with that of nuclear energy industry. Total production value of radiation application accounted for 54% of nuclear industry including nuclear energy industry and radiation applications in three fields above. Industrial radiation applications were further divided into five groups, namely nondestructive test, RI instruments, radiation facilities, radiation processing and ion beam processing. More than 70% of the total production value was brought about by ion beam processing for use with IC and semiconductors. Future economic prospect of radiation processing of polymers, for example cross-linking, EB curing, graft polymerization and degradation, is reviewed. Particular attention was paid to radiation vulcanization of natural rubber latex and also to degradation of natural polymers. (S. Ohno)

  16. Reconfigurable network processing platforms

    NARCIS (Netherlands)

    Kachris, C.

    2007-01-01

    This dissertation presents our investigation on how to efficiently exploit reconfigurable hardware to design flexible, high performance, and power efficient network devices capable to adapt to varying processing requirements of network applications and traffic. The proposed reconfigurable network pr

  17. Markovian risk process

    Institute of Scientific and Technical Information of China (English)

    WANG Han-xing; YAN Yun-zhi; ZHAO Fei; FANG Da-fan

    2007-01-01

    A Markovian risk process is considered in this paper, which is the generalization of the classical risk model. It is proper that a risk process with large claims is modelled as the Markovian risk model. In such a model, the occurrence of claims is described by a point process {N(t)}t≥o with N(t) being the number of jumps during the interval (0, t] for a Markov jump process. The ruin probability Ψ(u) of a company facing such a risk model is mainly studied. An integral equation satisfied by the ruin probability function Ψ(u) is obtained and the bounds for the convergence rate of the ruin probability Ψ(u) are given by using a generalized renewal technique developed in the paper.

  18. Dissolution processes. [224 references

    Energy Technology Data Exchange (ETDEWEB)

    Silver, G.L.

    1976-10-22

    This review contains more than 100 observations and 224 references on the dissolution phenomenon. The dissolution processes are grouped into three categories: methods of aqueous attack, fusion methods, and miscellaneous observations on phenomena related to dissolution problems. (DLC)

  19. Electron-attachment processes

    International Nuclear Information System (INIS)

    Topics covered include: (1) modes of production of negative ions, (2) techniques for the study of electron attachment processes, (3) dissociative electron attachment to ground-state molecules, (4) dissociative electron attachment to hot molecules (effects of temperature on dissociative electron attachment), (5) molecular parent negative ions, and (6) negative ions formed by ion-pair processes and by collisions of molecules with ground state and Rydberg atoms

  20. Biomedical signal processing

    CERN Document Server

    Akay, Metin

    1994-01-01

    Sophisticated techniques for signal processing are now available to the biomedical specialist! Written in an easy-to-read, straightforward style, Biomedical Signal Processing presents techniques to eliminate background noise, enhance signal detection, and analyze computer data, making results easy to comprehend and apply. In addition to examining techniques for electrical signal analysis, filtering, and transforms, the author supplies an extensive appendix with several computer programs that demonstrate techniques presented in the text.

  1. Hydrogen production processes

    International Nuclear Information System (INIS)

    The goals of this first Gedepeon workshop on hydrogen production processes are: to stimulate the information exchange about research programs and research advances in the domain of hydrogen production processes, to indicate the domains of interest of these processes and the potentialities linked with the coupling of a nuclear reactor, to establish the actions of common interest for the CEA, the CNRS, and eventually EDF, that can be funded in the framework of the Gedepeon research group. This document gathers the slides of the 17 presentations given at this workshop and dealing with: the H2 question and the international research programs (Lucchese P.); the CEA's research program (Lucchese P., Anzieu P.); processes based on the iodine/sulfur cycle: efficiency of a facility - flow-sheets, efficiencies, hard points (Borgard J.M.), R and D about the I/S cycle: Bunsen reaction (Colette S.), R and D about the I/S cycle: the HI/I2/H2O system (Doizi D.), demonstration loop/chemical engineering (Duhamet J.), materials and corrosion (Terlain A.); other processes under study: the Westinghouse cycle (Eysseric C.), other processes under study at the CEA (UT3, plasma,...) (Lemort F.), database about thermochemical cycles (Abanades S.), Zn/ZnO cycle (Broust F.), H2 production by cracking, high temperature reforming with carbon trapping (Flamant G.), membrane technology (De Lamare J.); high-temperature electrolysis: SOFC used as electrolyzers (Grastien R.); generic aspects linked with hydrogen production: technical-economical evaluation of processes (Werkoff F.), thermodynamic tools (Neveu P.), the reactor-process coupling (Aujollet P.). (J.S.)

  2. Radiopharmaceutical drug review process

    International Nuclear Information System (INIS)

    To ensure proper radioactive drug use (such as quality, diagnostic improvement, and minimal radioactive exposure), the Food and Drug Administration evaluates new drugs with respect to safety, effectiveness, and accuracy and adequacy of the labeling. The IND or NDA process is used for this purpose. A brief description of the process, including the Chemical Classification System and the therapeutic potential classification, is presented as it applies to radiopharmaceuticals. Also, the status of the IND or NDA review of radiopharmaceuticals is given

  3. Reward Processing in Autism

    OpenAIRE

    Scott-Van Zeeland, Ashley A.; DAPRETTO, MIRELLA; Ghahremani, Dara G.; Poldrack, Russell A.; Bookheimer, Susan Y.

    2010-01-01

    The social motivation hypothesis of autism posits that infants with autism do not experience social stimuli as rewarding, thereby leading to a cascade of potentially negative consequences for later development. While possible downstream effects of this hypothesis such as altered face and voice processing have been examined, there has not been a direct investigation of social reward processing in autism. Here we use functional magnetic resonance imaging to examine social and monetary rewarded ...

  4. Processing chicken at slaughter

    OpenAIRE

    POŽÁRKOVÁ, Radka

    2012-01-01

    Composition of poultry flesh and its purpose on human nutrition is described in this work. The quality and factors which affects quality are described further. HACCP system takes also important role. The end of this thesis is focused on poultry meat markets. The aim of this thesis was to study and describe chicken slaughtering process and processing of chicken carcass and determine the major share of the fleshy parts of broiler chicken carcass which means shares of breast muscles and tight mu...

  5. Digital signal processing: Handbook

    Science.gov (United States)

    Goldenberg, L. M.; Matiushkin, B. D.; Poliak, M. N.

    The fundamentals of the theory and design of systems and devices for the digital processing of signals are presented. Particular attention is given to algorithmic methods of synthesis and digital processing equipment in communication systems (e.g., selective digital filtering, spectral analysis, and variation of the signal discretization frequency). Programs for the computer-aided analysis of digital filters are described. Computational examples are presented, along with tables of transfer function coefficients for recursive and nonrecursive digital filters.

  6. Poststroke neuroplasticity processes

    Directory of Open Access Journals (Sweden)

    I. V. Damulin

    2014-01-01

    Full Text Available The paper considers different aspects of neuroplasticity in patients with stroke. It underlines the dynamism of this process and the ambiguity of involvement of the structures of the contralateral cerebral hemisphere in the restorative process. It considers the periods after onset of stroke and the activation of different brain regions (of both the involved and intact hemisphere in the poststroke period. Particular emphasis is placed on the issues of neurorehabilitation in this category of patients. Delay in rehabilitation measures leads to a worse outcome, the patients must be at hospital longer. It is emphasized that the neurorehabilitaton measures should use strategies aimed at improving plasticity processes at the level of synaptic transmission and neuronal communications. At the same time, of great importance are the processes of structural and functional remodeling of neuronal communications with the involvement of surviving neurons that are located in the peri-infarct area and partially damaged during ischemia. To recover stroke-induced lost motor functions, measures are implemented to modulate the ipsilateral motor cortex, contralateral motor cortex, and sensory afferentation. Remodeling processes, one of the manifestations of neuroplasticity, vary with the size and location of an ischemic focus. The specific features of this process with subcortical and cortical foci are considered. It is stressed that there are genetically determined neurotrophic factors that may enhance remodeling processes in the peri-infarct area, as well as factors that inhibit these processes. The sensory system is noted to have a high potential of compensation, which is appreciably associated with the considerable extent of sensory fibers even at the level of the cerebral cortex.

  7. Differentially Private Gaussian Processes

    OpenAIRE

    Smith, Michael Thomas; Zwiessele, Max; Lawrence, Neil D.

    2016-01-01

    A major challenge for machine learning is increasing the availability of data while respecting the privacy of individuals. Differential privacy is a framework which allows algorithms to have provable privacy guarantees. Gaussian processes are a widely used approach for dealing with uncertainty in functions. This paper explores differentially private mechanisms for Gaussian processes. We compare binning and adding noise before regression with adding noise post-regression. For the former we dev...

  8. Compactifications for Dual Processes

    OpenAIRE

    Glover, Joseph

    1980-01-01

    We develop a general theory of duality for Markov processes satisfying Meyer's hypothesis (L) and possessing an excessive reference measure. We make use of a compactification introduced by Walsh which allows a right process and its moderate dual to have strong Markov versions on an enlarged state space. The representation theory for potentials of additive functionals due to Revuz and Sharpe can be extended to this setting. Using this theory, we show that the conatural additive functionals int...

  9. Cognitive Processes in Writing

    Institute of Scientific and Technical Information of China (English)

    李莹

    2009-01-01

    Writing has become one of important topic to discuss in the new age.Its theories could be generally learnt,but its nature needs to handle in specific contents.In another words,every one who can write must generate his/her thinking or cognitive processes.Because writing thinking is to do meaningful activities,how to solove writing problems could be managed through cognitive process.

  10. Bank Record Processing

    Science.gov (United States)

    1982-01-01

    Barnett Banks of Florida, Inc. operates 150 banking offices in 80 Florida cities. Banking offices have computerized systems for processing deposits or withdrawals in checking/savings accounts, and for handling commercial and installment loan transactions. In developing a network engineering design for the terminals used in record processing, an affiliate, Barnett Computing Company, used COSMIC's STATCOM program. This program provided a reliable network design tool and avoided the cost of developing new software.

  11. Language and Speech Processing

    CERN Document Server

    Mariani, Joseph

    2008-01-01

    Speech processing addresses various scientific and technological areas. It includes speech analysis and variable rate coding, in order to store or transmit speech. It also covers speech synthesis, especially from text, speech recognition, including speaker and language identification, and spoken language understanding. This book covers the following topics: how to realize speech production and perception systems, how to synthesize and understand speech using state-of-the-art methods in signal processing, pattern recognition, stochastic modelling computational linguistics and human factor studi

  12. Analyzing business process management

    OpenAIRE

    Skjæveland, Børge

    2013-01-01

    Within the Oil & Gas Industry, the market is constantly growing more competitive, forcing companies to continually adapt to changes. Companies need to cut costs and improve the business efficiency. One way of successfully managing these challenges is to implement business process management in the organization. This thesis will analyze how Oceaneering Asset Integrity AS handled the implementation of a Business Process Management System and the effects it had on the employees. The main goal...

  13. Novel food processing techniques

    OpenAIRE

    Vesna Lelas

    2006-01-01

    Recently, a lot of investigations have been focused on development of the novel mild food processing techniques with the aim to obtain the high quality food products. It is presumed also that they could substitute some of the traditional processes in the food industry. The investigations are primarily directed to usage of high hydrostatic pressure, ultrasound, tribomechanical micronization, microwaves, pulsed electrical fields. The results of the scientific researches refer to the fact that a...

  14. Image Processing Software

    Science.gov (United States)

    1992-01-01

    To convert raw data into environmental products, the National Weather Service and other organizations use the Global 9000 image processing system marketed by Global Imaging, Inc. The company's GAE software package is an enhanced version of the TAE, developed by Goddard Space Flight Center to support remote sensing and image processing applications. The system can be operated in three modes and is combined with HP Apollo workstation hardware.

  15. Catalytic Processes in Biorefinery

    OpenAIRE

    Vitiello, Rosa

    2015-01-01

    The biorefinery is a system that uses as feedstocks biomasses and recover from these energy, fuel and chemicals. There are many processes considered in the biorefinery system, but in this thesis the biorefinery that uses as feedstock oil, in particular dedicated crops and waste vegetable oils were considered. In the first part of this thesis the biodiesel production process was studied. One possible route to produce biodiesel from waste oils (carachetrized by high concentrations of Fr...

  16. Fractional Pure Birth Processes

    CERN Document Server

    Orsingher, Enzo; 10.3150/09-BEJ235

    2010-01-01

    We consider a fractional version of the classical non-linear birth process of which the Yule-Furry model is a particular case. Fractionality is obtained by replacing the first-order time derivative in the difference-differential equations which govern the probability law of the process, with the Dzherbashyan-Caputo fractional derivative. We derive the probability distribution of the number $ \\mathcal{N}_\

  17. Apple Image Processing Educator

    Science.gov (United States)

    Gunther, F. J.

    1981-01-01

    A software system design is proposed and demonstrated with pilot-project software. The system permits the Apple II microcomputer to be used for personalized computer-assisted instruction in the digital image processing of LANDSAT images. The programs provide data input, menu selection, graphic and hard-copy displays, and both general and detailed instructions. The pilot-project results are considered to be successful indicators of the capabilities and limits of microcomputers for digital image processing education.

  18. Granger Independent Martingale Processes

    OpenAIRE

    Cherubini, Umberto; Gobbi, Fabio; Mulinacci, Sabrina; Romagnoli, Silvia

    2016-01-01

    We introduce a new class of processes for the evaluation of multivariate equity derivatives. The proposed setting is well suited for the application of the standard copula function theory to processes, rather than variables, and easily enables to enforce the martingale pricing requirement. The martingale condition is imposed in a general multidimensional Markov setting to which we only add the restriction of no-Granger-causality of the increments (Granger-independent increments). We call this...

  19. Helium process cycle

    Science.gov (United States)

    Ganni, Venkatarao

    2007-10-09

    A unique process cycle and apparatus design separates the consumer (cryogenic) load return flow from most of the recycle return flow of a refrigerator and/or liquefier process cycle. The refrigerator and/or liquefier process recycle return flow is recompressed by a multi-stage compressor set and the consumer load return flow is recompressed by an independent consumer load compressor set that maintains a desirable constant suction pressure using a consumer load bypass control valve and the consumer load return pressure control valve that controls the consumer load compressor's suction pressure. The discharge pressure of this consumer load compressor is thereby allowed to float at the intermediate pressure in between the first and second stage recycle compressor sets. Utilizing the unique gas management valve regulation, the unique process cycle and apparatus design in which the consumer load return flow is separate from the recycle return flow, the pressure ratios of each recycle compressor stage and all main pressures associated with the recycle return flow are allowed to vary naturally, thus providing a naturally regulated and balanced floating pressure process cycle that maintains optimal efficiency at design and off-design process cycle capacity and conditions automatically.

  20. Customer Innovation Process Leadership

    DEFF Research Database (Denmark)

    Lindgren, Peter; Jørgensen, Jacob Høj; Goduscheit, René Chester

    2007-01-01

    Innovation leadership has traditionally been focused on leading the companies' product development fast, cost effectively and with an optimal performance driven by technological inventions or by customers´ needs. To improve the efficiency of the product development process focus has been on diffe......Innovation leadership has traditionally been focused on leading the companies' product development fast, cost effectively and with an optimal performance driven by technological inventions or by customers´ needs. To improve the efficiency of the product development process focus has been...... on different types of organisational setup to the product development model and process. The globalization and enhanced competitive markets are however changing the innovation game and the challenge to innovation leadership Excellent product development innovation and leadership seems not any longer to enough...... another outlook to future innovation leadership - Customer Innovation Process Leadership - CIP-leadership. CIP-leadership moves the company's innovation process closer to the customer innovation process and discusses how companies can be involved and innovate in customers' future needs and lead...

  1. Helium process cycle

    Science.gov (United States)

    Ganni, Venkatarao

    2008-08-12

    A unique process cycle and apparatus design separates the consumer (cryogenic) load return flow from most of the recycle return flow of a refrigerator and/or liquefier process cycle. The refrigerator and/or liquefier process recycle return flow is recompressed by a multi-stage compressor set and the consumer load return flow is recompressed by an independent consumer load compressor set that maintains a desirable constant suction pressure using a consumer load bypass control valve and the consumer load return pressure control valve that controls the consumer load compressor's suction pressure. The discharge pressure of this consumer load compressor is thereby allowed to float at the intermediate pressure in between the first and second stage recycle compressor sets. Utilizing the unique gas management valve regulation, the unique process cycle and apparatus design in which the consumer load return flow is separate from the recycle return flow, the pressure ratios of each recycle compressor stage and all main pressures associated with the recycle return flow are allowed to vary naturally, thus providing a naturally regulated and balanced floating pressure process cycle that maintains optimal efficiency at design and off-design process cycle capacity and conditions automatically.

  2. Comparison among therapy planning in volumetric modulated arc for prostate treatments using one or two arches; Comparacao entre planejamentos de terapia em arco volumetrico modulado para tratamentos de prostata utilizando um ou dois arcos

    Energy Technology Data Exchange (ETDEWEB)

    Silva, Diego C.S.A.; Pavan, Guilherme A.; Nardi, Stela P.; Fairbanks, Leandro R.; Anderson, Ernani; Junior, Juraci P.R.; Junior, Helio A.S., E-mail: diegocunhalves@hotmail.com [Clinicas Oncologicas Integradas/Grupo COI, Rio de Janeiro, RJ (Brazil)

    2014-04-15

    The study aims to evaluate and compare retrospective planning for prostate cancer using the volumetric modulated arc therapy technique (RapidArc™ - Varian) with one or two arcs. Ten cases of patients with prostate cancer present were replanning with the volume of PTV's between 296.4 cm{sup 3} and 149.6 cm{sup 3} with prescribed dose of 78 Gy. A planning default was created for each case seeking the best result of the distribution dose in the PTV and to minimize the dose to organs at risk, and from this, creates two copies for optimization of one and two arcs. Comparisons of maximum and minimum dose, index of conformity, homogeneity and gradient dose were evaluated in the PTV, the time of the radiation beam and the number of monitor units. The organ at risk were evaluated according to the Radiation Therapy Oncology Group RTOG 0415 and compared in both optimizations. In terms of dosimetric values to organs at risk and PTV were similar, but there was an increase in the number of monitors units and the time of the radiation beam when using the technique with two arcs. Finally the results have showed that use a volumetric modulated arc therapy optimization for prostate cancer it is reaches similar dosimetric goals can be an effective option for radiotherapy department of developing countries with large number of patients. (author)

  3. Radiation processing of polysaccharides

    International Nuclear Information System (INIS)

    Radiation processing is a very convenient tool for imparting desirable effects in polymeric materials and it has been an area of enormous interest in the last few decades. The success of radiation technology for processing of synthetic polymers can be attributed to two reasons namely, their ease of processing in various shapes and sizes, and secondly, most of these polymers undergo crosslinking reaction upon exposure to radiation. In recent years, natural polymers are being looked at with renewed interest because of their unique characteristics, such as inherent biocompatibility, biodegradability and easy availability. Traditionally, the commercial exploitation of natural polymers like carrageenans, alginates or starch etc. has been based, to a large extent, on empirical knowledge. But now, the applications of natural polymers are being sought in knowledge - demanding areas such as pharmacy and biotechnology, which is acting as a locomotive for further scientific research in their structure-function relationship. Selected success stories concerning radiation processed natural polymers and application of their derivatives in the health care products industries and agriculture are reported. This publication will be of interest to individuals at nuclear institutions worldwide that have programmes of R and D and applications in radiation processing technologies. New developments in radiation processing of polymers and other natural raw materials give insight into converting them into useful products for every day life, human health and environmental remediation. The book will also be of interest to other field specialists, readers including managers and decision makers in industry (health care, food and agriculture) helping them to understand the important role of radiation processing technology in polysaccharides

  4. Novel food processing techniques

    Directory of Open Access Journals (Sweden)

    Vesna Lelas

    2006-12-01

    Full Text Available Recently, a lot of investigations have been focused on development of the novel mild food processing techniques with the aim to obtain the high quality food products. It is presumed also that they could substitute some of the traditional processes in the food industry. The investigations are primarily directed to usage of high hydrostatic pressure, ultrasound, tribomechanical micronization, microwaves, pulsed electrical fields. The results of the scientific researches refer to the fact that application of some of these processes in particular food industry can result in lots of benefits. A significant energy savings, shortening of process duration, mild thermal conditions, food products with better sensory characteristics and with higher nutritional values can be achieved. As some of these techniques act also on the molecular level changing the conformation, structure and electrical potential of organic as well as inorganic materials, the improvement of some functional properties of these components may occur. Common characteristics of all of these techniques are treatment at ambient or insignificant higher temperatures and short time of processing (1 to 10 minutes. High hydrostatic pressure applied to various foodstuffs can destroy some microorganisms, successfully modify molecule conformation and consequently improve functional properties of foods. At the same time it acts positively on the food products intend for freezing. Tribomechanical treatment causes micronization of various solid materials that results in nanoparticles and changes in structure and electrical potential of molecules. Therefore, the significant improvement of some rheological and functional properties of materials occurred. Ultrasound treatment proved to be potentially very successful technique of food processing. It can be used as a pretreatment to drying (decreases drying time and improves functional properties of food, as extraction process of various components

  5. Process Correlation Analysis Model for Process Improvement Identification

    OpenAIRE

    Su-jin Choi; Dae-Kyoo Kim; Sooyong Park

    2014-01-01

    Software process improvement aims at improving the development process of software systems. It is initiated by process assessment identifying strengths and weaknesses and based on the findings, improvement plans are developed. In general, a process reference model (e.g., CMMI) is used throughout the process of software process improvement as the base. CMMI defines a set of process areas involved in software development and what to be carried out in process areas in terms of goals and practice...

  6. Carbon dioxide reducing processes; Koldioxidreducerande processer

    Energy Technology Data Exchange (ETDEWEB)

    Svensson, Fredrik

    1999-12-01

    This thesis discusses different technologies to reduce or eliminate the carbon dioxide emissions, when a fossil fuel is used for energy production. Emission reduction can be accomplished by separating the carbon dioxide for storage or reuse. There are three different ways of doing the separation. The carbon dioxide can be separated before the combustion, the process can be designed so that the carbon dioxide can be separated without any energy consumption and costly systems or the carbon dioxide can be separated from the flue gas stream. Two different concepts of separating the carbon dioxide from a combined cycle are compared, from the performance and the economical point of view, with a standard natural gas fired combined cycle where no attempts are made to reduce the carbon dioxide emissions. One concept is to use absorption technologies to separate the carbon dioxide from the flue gas stream. The other concept is based on a semi-closed gas turbine cycle using carbon dioxide as working fluid and combustion with pure oxygen, generated in an air-separating unit. The calculations show that the efficiency (power) drop is smaller for the first concept than for the second, 8.7 % points compared to 13.7 % points, when power is produced. When both heat and power are produced, the relation concerning the efficiency (power) remains. Regarding the overall efficiency (heat and power) the opposite relation is present. A possible carbon dioxide tax must exceed 0.21 SEK/kg CO{sub 2} for it to be profitable to separate carbon dioxide with any of these technologies.

  7. VLSI signal processing technology

    CERN Document Server

    Swartzlander, Earl

    1994-01-01

    This book is the first in a set of forthcoming books focussed on state-of-the-art development in the VLSI Signal Processing area. It is a response to the tremendous research activities taking place in that field. These activities have been driven by two factors: the dramatic increase in demand for high speed signal processing, especially in consumer elec­ tronics, and the evolving microelectronic technologies. The available technology has always been one of the main factors in determining al­ gorithms, architectures, and design strategies to be followed. With every new technology, signal processing systems go through many changes in concepts, design methods, and implementation. The goal of this book is to introduce the reader to the main features of VLSI Signal Processing and the ongoing developments in this area. The focus of this book is on: • Current developments in Digital Signal Processing (DSP) pro­ cessors and architectures - several examples and case studies of existing DSP chips are discussed in...

  8. Cantilever epitaxial process

    Science.gov (United States)

    Ashby, Carol I.; Follstaedt, David M.; Mitchell, Christine C.; Han, Jung

    2003-07-29

    A process of growing a material on a substrate, particularly growing a Group II-VI or Group III-V material, by a vapor-phase growth technique where the growth process eliminates the need for utilization of a mask or removal of the substrate from the reactor at any time during the processing. A nucleation layer is first grown upon which a middle layer is grown to provide surfaces for subsequent lateral cantilever growth. The lateral growth rate is controlled by altering the reactor temperature, pressure, reactant concentrations or reactant flow rates. Semiconductor materials, such as GaN, can be produced with dislocation densities less than 10.sup.7 /cm.sup.2.

  9. Laser Processing and Chemistry

    CERN Document Server

    Bäuerle, Dieter

    2011-01-01

    This book gives an overview of the fundamentals and applications of laser-matter interactions, in particular with regard to laser material processing. Special attention is given to laser-induced physical and chemical processes at gas-solid, liquid-solid, and solid-solid interfaces. Starting with the background physics, the book proceeds to examine applications of lasers in “standard” laser machining and laser chemical processing (LCP), including the patterning, coating, and modification of material surfaces. This fourth edition has been enlarged to cover the rapid advances in the understanding of the dynamics of materials under the action of ultrashort laser pulses, and to include a number of new topics, in particular the increasing importance of lasers in various different fields of surface functionalizations and nanotechnology. In two additional chapters, recent developments in biotechnology, medicine, art conservation and restoration are summarized. Graduate students, physicists, chemists, engineers, a...

  10. Cryogenic process simulation

    International Nuclear Information System (INIS)

    Combining accurate fluid property databases with a commercial equation-solving software package running on a desktop computer allows simulation of cryogenic processes without extensive computer programming. Computer simulation can be a powerful tool for process development or optimization. Most engineering simulations to date have required extensive programming skills in languages such as Fortran, Pascal, etc. Authors of simulation code have also usually been responsible for choosing and writing the particular solution algorithm. This paper describes a method of simulating cryogenic processes with a commercial software package on a desktop personal computer that does not require these traditional programming tasks. Applications include modeling of cryogenic refrigerators, heat exchangers, vapor-cooled power leads, vapor pressure thermometers, and various other engineering problems

  11. Product and Process Modelling

    DEFF Research Database (Denmark)

    Cameron, Ian T.; Gani, Rafiqul

    This book covers the area of product and process modelling via a case study approach. It addresses a wide range of modelling applications with emphasis on modelling methodology and the subsequent in-depth analysis of mathematical models to gain insight via structural aspects of the models....... These approaches are put into the context of life cycle modelling, where multiscale and multiform modelling is increasingly prevalent in the 21st century. The book commences with a discussion of modern product and process modelling theory and practice followed by a series of case studies drawn from a variety...... of process industries. The book builds on the extensive modelling experience of the authors, who have developed models for both research and industrial purposes. It complements existing books by the authors in the modelling area. Those areas include the traditional petroleum and petrochemical industries...

  12. Processes for xanthomonas biopolymers

    Energy Technology Data Exchange (ETDEWEB)

    Engelskirchen, K.; Stein, W.; Bahn, M.; Schieferstein, L.; Schindler, J.

    1984-03-27

    A process is described for producing xanthan gum in which the use of a stable, water-in-oil emulsion in the fermentation medium markedly lowers the viscosity of the medium, resulting in lower energy requirements for the process, and also resulting in enhanced yields of the biopolymer. In such an emulsion, the aqueous fermentation phase, with its microbial growth and metabolic processes, takes place in a finely dispersed homogeneous oil phase. The viscosity increase in each droplet of the aqueous nutrient solution will not noticeably affect this mixture in the fermenter because the viscosity of the reaction mixture in the fermenter is determined primarily by the viscosity of the oil phase. 45 claims

  13. Process window metrology

    Science.gov (United States)

    Ausschnitt, Christopher P.; Chu, William; Hadel, Linda M.; Ho, Hok; Talvi, Peter

    2000-06-01

    This paper is the third of a series that defines a new approach to in-line lithography control. The first paper described the use of optically measurable line-shortening targets to enhance signal-to-noise and reduce measurement time. The second described the dual-tone optical critical dimension (OCD) measurement and analysis necessary to distinguish dose and defocus. Here we describe the marriage of dual-tone OCD to SEM-CD metrology that comprises what we call 'process window metrology' (PWM), the means to locate each measured site in dose and focus space relative to the allowed process window. PWM provides in-line process tracking and control essential to the successful implementation of low-k lithography.

  14. Business Process Requirement Engineering

    Directory of Open Access Journals (Sweden)

    Atsa Etoundi Roger,

    2010-12-01

    Full Text Available Requirement engineering is as an increasingly important discipline for supporting business process and workflow modeling, as these are designed to satisfy diverse customer needs, and increase the productivity of enterprise. Moreover, most customers hesitate to adopt a given product or service if the added value is not conformed to their desires. Dealing with customers, with a wide range of perspective, within an enterprise, is very complex. These perspectives are grounded in differences in skills, responsibility, knowledge and expertise of stakeholders. This holds more in the domain of business processes and workflows where the satisfaction of the customers is the must if these enterprises wish to deal with the pressure of the network economy. Based on the requirement engineering, we present in this paper an integration of RE approach in the modeling of business process and workflows. (Abstract

  15. Lapis SOI Pixel Process

    CERN Document Server

    Okihara, Masao; Miura, Noriyuki; Kuriyama, Naoya; Nagatomo, Yoshiki

    2015-01-01

    0.2 um fully-depleted SOI technology has been developed a for X-ray pixel detectors. To improve the detector performance, some advanced process technologies are developing continuously. To utilize the high resistivity FZ-SOI, slow ramp up and ramp down recipes are applied for the thermal processes in both of SOI wafer fabrication and pixel detector process. The suitable backside treatment is also applied to prevent increase of leakage current at backside damaged layer in the case of full depletion of substrate. Large detector chip about 66mm width and 30mm height can be obtained by stitching exposure technique for large detector chip. To improve cross-talk and radiation tolerance, the nested well structure and double- SOI wafer are now under investigation for advanced pixel structure.

  16. Foundations of signal processing

    CERN Document Server

    Vetterli, Martin; Goyal, Vivek K

    2014-01-01

    This comprehensive and engaging textbook introduces the basic principles and techniques of signal processing, from the fundamental ideas of signals and systems theory to real-world applications. Students are introduced to the powerful foundations of modern signal processing, including the basic geometry of Hilbert space, the mathematics of Fourier transforms, and essentials of sampling, interpolation, approximation and compression. The authors discuss real-world issues and hurdles to using these tools, and ways of adapting them to overcome problems of finiteness and localisation, the limitations of uncertainty and computational costs. Standard engineering notation is used throughout, making mathematical examples easy for students to follow, understand and apply. It includes over 150 homework problems and over 180 worked examples, specifically designed to test and expand students' understanding of the fundamentals of signal processing, and is accompanied by extensive online materials designed to aid learning, ...

  17. Quantum independent increment processes

    CERN Document Server

    Franz, Uwe

    2005-01-01

    This volume is the first of two volumes containing the revised and completed notes lectures given at the school "Quantum Independent Increment Processes: Structure and Applications to Physics". This school was held at the Alfried-Krupp-Wissenschaftskolleg in Greifswald during the period March 9 – 22, 2003, and supported by the Volkswagen Foundation. The school gave an introduction to current research on quantum independent increment processes aimed at graduate students and non-specialists working in classical and quantum probability, operator algebras, and mathematical physics. The present first volume contains the following lectures: "Lévy Processes in Euclidean Spaces and Groups" by David Applebaum, "Locally Compact Quantum Groups" by Johan Kustermans, "Quantum Stochastic Analysis" by J. Martin Lindsay, and "Dilations, Cocycles and Product Systems" by B.V. Rajarama Bhat.

  18. Topological signal processing

    CERN Document Server

    Robinson, Michael

    2014-01-01

    Signal processing is the discipline of extracting information from collections of measurements. To be effective, the measurements must be organized and then filtered, detected, or transformed to expose the desired information.  Distortions caused by uncertainty, noise, and clutter degrade the performance of practical signal processing systems. In aggressively uncertain situations, the full truth about an underlying signal cannot be known.  This book develops the theory and practice of signal processing systems for these situations that extract useful, qualitative information using the mathematics of topology -- the study of spaces under continuous transformations.  Since the collection of continuous transformations is large and varied, tools which are topologically-motivated are automatically insensitive to substantial distortion. The target audience comprises practitioners as well as researchers, but the book may also be beneficial for graduate students.

  19. Stochastic processes inference theory

    CERN Document Server

    Rao, Malempati M

    2014-01-01

    This is the revised and enlarged 2nd edition of the authors’ original text, which was intended to be a modest complement to Grenander's fundamental memoir on stochastic processes and related inference theory. The present volume gives a substantial account of regression analysis, both for stochastic processes and measures, and includes recent material on Ridge regression with some unexpected applications, for example in econometrics. The first three chapters can be used for a quarter or semester graduate course on inference on stochastic processes. The remaining chapters provide more advanced material on stochastic analysis suitable for graduate seminars and discussions, leading to dissertation or research work. In general, the book will be of interest to researchers in probability theory, mathematical statistics and electrical and information theory.

  20. Modern coating processes

    International Nuclear Information System (INIS)

    Articles collected in this volume explain both the present state of technique and current developments and problems in the environment of the following coating processes: - Hardfacing welding and soldering; - Thermal spraying; - Thin film technique (CVD, PVD); - Galvanising. Apart from basic representation of the conventional use of the different processes, both the new technological and material developments are to the fore. In this context, the purposeful post-treatment of coatings and the combination of different processes to achieve special coating properties should be mentioned. Examples of this show the hot isostatic pressing or laser melting of sprayed coatings, the simultaneous spraying and shot-blasting and the combination of galvanic and thin film techniques for the manufacture of hybrid systems. A further important group of subjects concerns the testing of various coatings. (orig.)

  1. AERONET Version 3 processing

    Science.gov (United States)

    Holben, B. N.; Slutsker, I.; Giles, D. M.; Eck, T. F.; Smirnov, A.; Sinyuk, A.; Schafer, J.; Rodriguez, J.

    2014-12-01

    The Aerosol Robotic Network (AERONET) database has evolved in measurement accuracy, data quality products, availability to the scientific community over the course of 21 years with the support of NASA, PHOTONS and all federated partners. This evolution is periodically manifested as a new data version release by carefully reprocessing the entire database with the most current algorithms that fundamentally change the database and ultimately the data products used by the community. The newest processing, Version 3, will be released in 2015 after the entire database is reprocessed and real-time data processing becomes operational. All V 3 algorithms have been developed, individually vetted and represent four main categories: aerosol optical depth (AOD) processing, inversion processing, database management and new products. The primary trigger for release of V 3 lies with cloud screening of the direct sun observations and computation of AOD that will fundamentally change all data available for analysis and all subsequent retrieval products. This presentation will illustrate the innovative approach used for cloud screening and assesses the elements of V3 AOD relative to the current version. We will also present the advances in the inversion product processing with emphasis on the random and systematic uncertainty estimates. This processing will be applied to the new hybrid measurement scenario intended to provide inversion retrievals for all solar zenith angles. We will introduce automatic quality assurance criteria that will allow near real time quality assured aerosol products necessary for real time satellite and model validation and assimilation. Last we will introduce the new management structure that will improve access to the data database. The current version 2 will be supported for at least two years after the initial release of V3 to maintain continuity for on going investigations.

  2. NTP comparison process

    Science.gov (United States)

    Corban, Robert

    The systems engineering process for the concept definition phase of the program involves requirements definition, system definition, and consistent concept definition. The requirements definition process involves obtaining a complete understanding of the system requirements based on customer needs, mission scenarios, and nuclear thermal propulsion (NTP) operating characteristics. A system functional analysis is performed to provide a comprehensive traceability and verification of top-level requirements down to detailed system specifications and provides significant insight into the measures of system effectiveness to be utilized in system evaluation. The second key element in the process is the definition of system concepts to meet the requirements. This part of the process involves engine system and reactor contractor teams to develop alternative NTP system concepts that can be evaluated against specific attributes, as well as a reference configuration against which to compare system benefits and merits. Quality function deployment (QFD), as an excellent tool within Total Quality Management (TQM) techniques, can provide the required structure and provide a link to the voice of the customer in establishing critical system qualities and their relationships. The third element of the process is the consistent performance comparison. The comparison process involves validating developed concept data and quantifying system merits through analysis, computer modeling, simulation, and rapid prototyping of the proposed high risk NTP subsystems. The maximum amount possible of quantitative data will be developed and/or validated to be utilized in the QFD evaluation matrix. If upon evaluation of a new concept or its associated subsystems determine to have substantial merit, those features will be incorporated into the reference configuration for subsequent system definition and comparison efforts.

  3. Orchestrator Telemetry Processing Pipeline

    Science.gov (United States)

    Powell, Mark; Mittman, David; Joswig, Joseph; Crockett, Thomas; Norris, Jeffrey

    2008-01-01

    Orchestrator is a software application infrastructure for telemetry monitoring, logging, processing, and distribution. The architecture has been applied to support operations of a variety of planetary rovers. Built in Java with the Eclipse Rich Client Platform, Orchestrator can run on most commonly used operating systems. The pipeline supports configurable parallel processing that can significantly reduce the time needed to process a large volume of data products. Processors in the pipeline implement a simple Java interface and declare their required input from upstream processors. Orchestrator is programmatically constructed by specifying a list of Java processor classes that are initiated at runtime to form the pipeline. Input dependencies are checked at runtime. Fault tolerance can be configured to attempt continuation of processing in the event of an error or failed input dependency if possible, or to abort further processing when an error is detected. This innovation also provides support for Java Message Service broadcasts of telemetry objects to clients and provides a file system and relational database logging of telemetry. Orchestrator supports remote monitoring and control of the pipeline using browser-based JMX controls and provides several integration paths for pre-compiled legacy data processors. At the time of this reporting, the Orchestrator architecture has been used by four NASA customers to build telemetry pipelines to support field operations. Example applications include high-volume stereo image capture and processing, simultaneous data monitoring and logging from multiple vehicles. Example telemetry processors used in field test operations support include vehicle position, attitude, articulation, GPS location, power, and stereo images.

  4. Biomedical Image Processing

    CERN Document Server

    Deserno, Thomas Martin

    2011-01-01

    In modern medicine, imaging is the most effective tool for diagnostics, treatment planning and therapy. Almost all modalities have went to directly digital acquisition techniques and processing of this image data have become an important option for health care in future. This book is written by a team of internationally recognized experts from all over the world. It provides a brief but complete overview on medical image processing and analysis highlighting recent advances that have been made in academics. Color figures are used extensively to illustrate the methods and help the reader to understand the complex topics.

  5. Radiation processed polysaccharide products

    International Nuclear Information System (INIS)

    Radiation crosslinking, degradation and grafting techniques for modification of polymeric materials including natural polysaccharides have been providing many unique products. In this communication, typical products from radiation processed polysaccharides particularly plant growth promoter from alginate, plant protector and elicitor from chitosan, super water absorbent containing starch, hydrogel sheet containing carrageenan/CM-chitosan as burn wound dressing, metal ion adsorbent from partially deacetylated chitin were described. The procedures for producing those above products were also outlined. Future development works on radiation processing of polysaccharides were briefly presented. (author)

  6. Image Processing System

    Science.gov (United States)

    1986-01-01

    Mallinckrodt Institute of Radiology (MIR) is using a digital image processing system which employs NASA-developed technology. MIR's computer system is the largest radiology system in the world. It is used in diagnostic imaging. Blood vessels are injected with x-ray dye, and the images which are produced indicate whether arteries are hardened or blocked. A computer program developed by Jet Propulsion Laboratory known as Mini-VICAR/IBIS was supplied to MIR by COSMIC. The program provides the basis for developing the computer imaging routines for data processing, contrast enhancement and picture display.

  7. Semantic and Process Interoperability

    Directory of Open Access Journals (Sweden)

    Félix Oscar Fernández Peña

    2010-05-01

    Full Text Available Knowledge management systems support education at different levels of the education. This is very important for the process in which the higher education of Cuba is involved. Structural transformations of teaching are focused on supporting the foundation of the information society in the country. This paper describes technical aspects of the designing of a model for the integration of multiple knowledgemanagement tools supporting teaching. The proposal is based on the definition of an ontology for the explicit formal description of the semantic of motivations of students and teachers in the learning process. Its target is to facilitate knowledge spreading.

  8. Genomic signal processing

    CERN Document Server

    Shmulevich, Ilya

    2007-01-01

    Genomic signal processing (GSP) can be defined as the analysis, processing, and use of genomic signals to gain biological knowledge, and the translation of that knowledge into systems-based applications that can be used to diagnose and treat genetic diseases. Situated at the crossroads of engineering, biology, mathematics, statistics, and computer science, GSP requires the development of both nonlinear dynamical models that adequately represent genomic regulation, and diagnostic and therapeutic tools based on these models. This book facilitates these developments by providing rigorous mathema

  9. An Integrated Desgin Process

    DEFF Research Database (Denmark)

    Petersen, Mads Dines; Knudstrup, Mary-Ann

    2010-01-01

    Present paper is placed in the discussion about how sustainable measures are integrated in the design process by architectural offices. It presents results from interviews with four leading Danish architectural offices working with sustainable architecture and their experiences with it, as well...... as the requirements they meet in terms of how to approach the design process – especially focused on the early stages like a competition. The interviews focus on their experiences with working in multidisciplinary teams and using digital tools to support their work with sustainable issues. The interviews show...

  10. An Integrated Design Process

    DEFF Research Database (Denmark)

    Petersen, Mads Dines; Knudstrup, Mary-Ann

    2010-01-01

    Present paper is placed in the discussion about how sustainable measures are integrated in the design process by architectural offices. It presents results from interviews with four leading Danish architectural offices working with sustainable architecture and their experiences with it, as well...... as the requirements they meet in terms of how to approach the design process – especially focused on the early stages like a competition. The interviews focus on their experiences with working in multidisciplinary teams and using digital tools to support their work with sustainable issues. The interviews show...

  11. Research Planning Process

    Science.gov (United States)

    Lofton, Rodney

    2010-01-01

    This presentation describes the process used to collect, review, integrate, and assess research requirements desired to be a part of research and payload activities conducted on the ISS. The presentation provides a description of: where the requirements originate, to whom they are submitted, how they are integrated into a requirements plan, and how that integrated plan is formulated and approved. It is hoped that from completing the review of this presentation, one will get an understanding of the planning process that formulates payload requirements into an integrated plan used for specifying research activities to take place on the ISS.

  12. Mutually Testing Processes

    OpenAIRE

    Bernardi, Giovanni; Hennessy, Matthew

    2015-01-01

    In the standard testing theory of DeNicola-Hennessy one process is considered to be a refinement of another if every test guaranteed by the former is also guaranteed by the latter. In the domain of web services this has been recast, with processes viewed as servers and tests as clients. In this way the standard refinement preorder between servers is determined by their ability to satisfy clients. But in this setting there is also a natural refinement preorder between clients, determined by th...

  13. Food irradiation processing

    International Nuclear Information System (INIS)

    An international symposium on food irradiation processing dealing with issues which affect the commercial introduction of the food irradiation process was held in Vienna in 1985. The symposium, which attracted close to 300 participants, was planned to interest not only scientists and food technologists, but also representatives of government agencies, the food industry, trade associations and consumer organizations. The symposium included a discussion of the technological and economic feasibility of applying ionizing energy for the preservation of food, and focused on the specific needs of developing countries. Separate abstracts were prepared for the various presentations at this meeting

  14. WWTP Process Tank Modelling

    DEFF Research Database (Denmark)

    Laursen, Jesper

    investigated individually, with the purpose of obtaining a better understanding before the final integrated model is setup. In the sub-process investigations focus is addressed especially at aeration by bottom mounted diffusers and mechanical mixing of the activated sludge suspension via slowly rotating...... zones in mind, its special construction poses strict demands to the hydrodynamic model. In case study three the model is extended to a three-phase model where also the injection of air bubbles during the aeration process is modeled. The aeration of sludge is controlled through a simple expression...

  15. Reversible brazing process

    Science.gov (United States)

    Pierce, Jim D.; Stephens, John J.; Walker, Charles A.

    1999-01-01

    A method of reversibly brazing surfaces together. An interface is affixed to each surface. The interfaces can be affixed by processes such as mechanical joining, welding, or brazing. The two interfaces are then brazed together using a brazing process that does not defeat the surface to interface joint. Interfaces of materials such as Ni-200 can be affixed to metallic surfaces by welding or by brazing with a first braze alloy. The Ni-200 interfaces can then be brazed together using a second braze alloy. The second braze alloy can be chosen so that it minimally alters the properties of the interfaces to allow multiple braze, heat and disassemble, rebraze cycles.

  16. Advanced Polymer Processing Facility

    Energy Technology Data Exchange (ETDEWEB)

    Muenchausen, Ross E. [Los Alamos National Laboratory

    2012-07-25

    Some conclusions of this presentation are: (1) Radiation-assisted nanotechnology applications will continue to grow; (2) The APPF will provide a unique focus for radiolytic processing of nanomaterials in support of DOE-DP, other DOE and advanced manufacturing initiatives; (3) {gamma}, X-ray, e-beam and ion beam processing will increasingly be applied for 'green' manufacturing of nanomaterials and nanocomposites; and (4) Biomedical science and engineering may ultimately be the biggest application area for radiation-assisted nanotechnology development.

  17. Solar industrial process heat

    Energy Technology Data Exchange (ETDEWEB)

    Lumsdaine, E.

    1981-04-01

    The aim of the assessment reported is to candidly examine the contribution that solar industrial process heat (SIPH) is realistically able to make in the near and long-term energy futures of the United States. The performance history of government and privately funded SIPH demonstration programs, 15 of which are briefly summarized, and the present status of SIPH technology are discussed. The technical and performance characteristics of solar industrial process heat plants and equipment are reviewed, as well as evaluating how the operating experience of over a dozen SIPH demonstration projects is influencing institutional acceptance and economoc projections. Implications for domestic energy policy and international implications are briefly discussed. (LEW)

  18. Thermal stir welding process

    Science.gov (United States)

    Ding, R. Jeffrey (Inventor)

    2012-01-01

    A welding method is provided for forming a weld joint between first and second elements of a workpiece. The method includes heating the first and second elements to form an interface of material in a plasticized or melted state interface between the elements. The interface material is then allowed to cool to a plasticized state if previously in a melted state. The interface material, while in the plasticized state, is then mixed, for example, using a grinding/extruding process, to remove any dendritic-type weld microstructures introduced into the interface material during the heating process.

  19. NITRIC ACID PICKLING PROCESS

    Science.gov (United States)

    Boller, E.R.; Eubank, L.D.

    1958-08-19

    An improved process is described for the treatment of metallic uranium surfaces preparatory to being given hot dip coatings. The process consists in first pickling the uraniunn surInce with aqueous 50% to 70% nitric acid, at 60 to 70 deg C, for about 5 minutes, rinsing the acid solution from the uranium article, promptly drying and then passing it through a molten alkali-metal halide flux consisting of 42% LiCl, 53% KCla and 5% NaCl into a molten metal bath consisting of 85 parts by weight of zinc and 15 parts by weight of aluminum

  20. Hard exclusive QCD processes

    Energy Technology Data Exchange (ETDEWEB)

    Kugler, W.

    2007-01-15

    Hard exclusive processes in high energy electron proton scattering offer the opportunity to get access to a new generation of parton distributions, the so-called generalized parton distributions (GPDs). This functions provide more detailed informations about the structure of the nucleon than the usual PDFs obtained from DIS. In this work we present a detailed analysis of exclusive processes, especially of hard exclusive meson production. We investigated the influence of exclusive produced mesons on the semi-inclusive production of mesons at fixed target experiments like HERMES. Further we give a detailed analysis of higher order corrections (NLO) for the exclusive production of mesons in a very broad range of kinematics. (orig.)

  1. The process of entrepreneurship:

    DEFF Research Database (Denmark)

    Neergaard, Helle

    2003-01-01

    between organisational growth and managerial role transformation in technology-based new ventures. The chapter begins by reviewing existing literature on organisational growth patterns and establishing a link to managerial roles in order to elucidate the basic premises of the study. The chapter...... for understanding the link between organisational growth and managerial role transformation.......Growing a technology-based new venture is a complex process because these ventures are embedded in turbulent environments that require fast organisational and managerial transformation. This chapter addresses the evolutionary process of such ventures. It seeks to provide insight into the link...

  2. Statecharts Via Process Algebra

    Science.gov (United States)

    Luttgen, Gerald; vonderBeeck, Michael; Cleaveland, Rance

    1999-01-01

    Statecharts is a visual language for specifying the behavior of reactive systems. The Language extends finite-state machines with concepts of hierarchy, concurrency, and priority. Despite its popularity as a design notation for embedded system, precisely defining its semantics has proved extremely challenging. In this paper, a simple process algebra, called Statecharts Process Language (SPL), is presented, which is expressive enough for encoding Statecharts in a structure-preserving and semantic preserving manner. It is establish that the behavioral relation bisimulation, when applied to SPL, preserves Statecharts semantics

  3. Power plant process computer

    International Nuclear Information System (INIS)

    The concept of instrumentation and control in nuclear power plants incorporates the use of process computers for tasks which are on-line in respect to real-time requirements but not closed-loop in respect to closed-loop control. The general scope of tasks is: - alarm annunciation on CRT's - data logging - data recording for post trip reviews and plant behaviour analysis - nuclear data computation - graphic displays. Process computers are used additionally for dedicated tasks such as the aeroball measuring system, the turbine stress evaluator. Further applications are personal dose supervision and access monitoring. (orig.)

  4. Exoplanet atmospheres physical processes

    CERN Document Server

    Seager, Sara

    2010-01-01

    Over the past twenty years, astronomers have identified hundreds of extrasolar planets--planets orbiting stars other than the sun. Recent research in this burgeoning field has made it possible to observe and measure the atmospheres of these exoplanets. This is the first textbook to describe the basic physical processes--including radiative transfer, molecular absorption, and chemical processes--common to all planetary atmospheres, as well as the transit, eclipse, and thermal phase variation observations that are unique to exoplanets. In each chapter, Sara Seager offers a conceptual introdu

  5. Estudio comparativo del dolor entre arcos de acero y níquel titanio en los tratamientos de ortodoncia

    OpenAIRE

    Larrea Elena, Mónica

    2013-01-01

    Introducción El dolor ha sido tradicionalmente uno de los efectos secundarios más frecuentes en los tratamientos de ortodoncia. El movimiento ortodóncico produce una reacción inflamatoria en el periodonto y la pulpa, lo que estimula la producción de mediadores bioquímicos causantes de la sensación de dolor. (Krishnan y cols, 2007) Existen diferentes factores como el sexo, personalidad y su experiencia previa con otros tratamientos dentales, que pueden influir en la vivencia concreta qu...

  6. Estudio comparativo de la fricción entre un bracket trapezoidal y uno de arco recto rectangular.

    OpenAIRE

    Cobo Díaz, Teresa

    2015-01-01

    Un tratamiento ortodóncico se caracteriza por la aplicación de fuerzas a dientes con la intención de moverlos a una posición deseada predeterminada. Para establecer eficientemente el movimiento dental, las fuerzas aplicadas sobre los dientes deben encontrarse dentro de un cierto intervalo: unas fuerzas demasiado elevadas pueden originar un movimiento dental rápido, doloroso o una anquilosis, mientras que unas fuerzas demasiado bajas resultan en un movimiento dental lento o inexistente. Est...

  7. Comunicación química en la boa arco iris Epicrates cenchria alvarezi (Serpentes, Boidae

    Directory of Open Access Journals (Sweden)

    Briguera, Verónica

    1994-01-01

    Full Text Available In snakes there are two possible pheromonal sources: skin and cloacal glands. In this work, we tested both secretions in adults of Epicrates cenchria alvarezi as messages transmitters, trying to explain the role that plays this information in the social context of this species. Both secretions have shown to have pheromonal function. Conespecific odors elicited more tongue extrusions than other stimuli did. These results suggest that the snake is capable of discriminating conspecifics based on chemical cues alone.

  8. Generación eléctrica por gasificación por arco de plasma de residuos urbanos

    OpenAIRE

    Sosa, María Isabel; Bussolini, Ignacio

    2015-01-01

    La presente temática surgió de la realización del trabajo final de I. Bussolini, presentado en la Facultad de Ingeniería de la Universidad Nacional de La Plata para optar por el grado de Ingeniero Industrial. Interesado en la problemática de la generación energética en conjunción con protección del medio ambiente analizó la factibilidad de la instalación de una planta generadora de electricidad conectada al Mercado Eléctrico Mayorista MEM argentino, utilizando la tecnología de gasificación de...

  9. Fast and efficient modification in an electric arc furnace; Reforma rapida e eficiente de um forno eletrico a arco

    Energy Technology Data Exchange (ETDEWEB)

    Campanela, Andrea [Danieli Centro Met, Udine (Italy)

    1996-12-31

    Five months after signature of a contract with the Danieli, the first tapping at the Esteban Orbegozo-Spain modern steel plant occurred. The electric arc furnace has been considerably modified to attain the present state-of-art: new electrode regulation system, new lifting, electrode and roof rotation systems, new roof and hydraulic systems. The average power has been increased near 8%, resulting in a significant productivity increase of 7% 5 figs., 3 tabs.

  10. Composición de ácidos grasos en ovas de trucha arco iris (Oncorhynchus mykiss, Walbaum, 1792

    Directory of Open Access Journals (Sweden)

    Rafael Rosado Puccini

    2012-06-01

    Full Text Available En este artículo se analizan con parámetros de composición 58 puestas de trucha arcoiris obtenidas, manejadas y monitoreadas individualmente en desempeño desde la fertilización hasta finalizar la etapa de reabsorción de vesícula. Además de los valores reproductivos, el contenido de ácidos grasos en las ovas se determinó en fresco, mediante cromatografía de gases. En el perfil medio se destacan los ácidos palmítico (C16, oleico (C18:1n-9 y docosahexaenoico (C22:6n-3 como los más representativos, con casi el 60% del total y, en general, en concentraciones estables entre las hembras. Tanto para cada ácido determinado como para el conjunto de contenidos integrados de las series n-3 y n-6, y los colectivos de saturados (SAF, monoinsaturados (MUFA y poliinsaturados (PUFA, se define un patrón de composición similar al reportado para la especie en otros esquemas de manejo y bajo regímenes nutricionales variables. Se analizó la condición conservativa en la incorporación de ácidos grasos al huevo, y se discutió su utilidad como posibles definitorios de calidad, teniendo como referente la alta variabilidad registrada en la supervivencia al final del proceso de incubación.

  11. Energy quality in the feeding systems of arc furnaces; Qualidade da energia no sistema de alimentacao de fornos a arco

    Energy Technology Data Exchange (ETDEWEB)

    Pralas, Jozo [Montenegro Univ. (Yugoslavia); Cetkovic, Budimir; Radulovic, Rajko [Niksic Metallurgic Co. (Yugoslavia)

    1997-09-01

    Several common disturbances in electric power systems which feed arc furnaces are voltage harmonics, flicker, asymmetric load, over tensions, among others. In order to solve such problems, it is necessary to study each case individually. This work presents a case study of an Yugoslavian metallurgic company 3 refs., 5 figs.

  12. “La lira mi sia cara e l’arco ricurvo”: una trama di tensioni opposte

    OpenAIRE

    Russo, Nicola

    2012-01-01

    The opposition between tecnomania and technophobia has an ideological and fideistic character. This essay proposes a philosophical critique of that opposition, carried out through genealogy and anthropology of technology. On the guidelines of ontology, biology and paleoanthropology of machines, it is detected the fundamental difference between “apotelestic” and “sympleromatic” machines, two dimensions that converged in ancient techne. On this basis it becomes evident that the e...

  13. Total Process Surveillance (TOPS)

    International Nuclear Information System (INIS)

    In order to operate a plant safely and economically, an operator requires a complete knowledge of the plant's operating state. Only a limited amount of information is generally available regarding the plant's current state, this being determined by a finite number of transducers measuring key process parameters. It is the responsibility of the operator to assimilate and interpret this, possibly conflicting, raw measurement data. An operator accomplishes this data interpretation task by utilising his knowledge of the operation of the process and his experience of its behaviour under certain well defined conditions. Under normal operating conditions the operator may use only a fairly basic mental model of the process to facilitate his understanding. However under off-normal plant conditions and especially those associated with a severe accident, this mental model may not be sufficient to understand the behaviour of the process. This is highly likely to be the case where the process system has undergone a structural change as a result of a severe accident. As with any management task, the prime components of dealing with a severe accident condition are monitoring and control. This implies the need to obtain information on the process state, assimilate this information, interpret and understand what it means in the context of the process, leading to a control decision and thus a control action. A key task here is the gathering and assimilation of all the available plant data. The transducers installed on a plant represent a diverse range of information sources. Traditionally these are considered individually or in functional groups, such as fuel channel outlet temperatures. However each transducer measurement is almost invariably linked to other different transducer measurements via the physics of the process. This leads to the concept of analytical redundancy among a given set of diverse transducers. In an off-normal plant condition, the ability to exploit this

  14. Conceptualizing operations strategy processes

    DEFF Research Database (Denmark)

    Rytter, Niels Gorm; Boer, Harry; Koch, Christian

    2007-01-01

    Purpose - The purpose of this paper is to present insights into operations strategy (OS) in practice. It outlines a conceptualization and model of OS processes and, based on findings from an in-depth and longitudinal case study, contributes to further development of extant OS models and methods...

  15. Information Processing of Trauma.

    Science.gov (United States)

    Hartman, Carol R.; Burgess, Ann W.

    1993-01-01

    This paper presents a neuropsychosocial model of information processing to explain a victimization experience, specifically child sexual abuse. It surveys the relation of sensation, perception, and cognition as a systematic way to provide a framework for studying human behavior and describing human response to traumatic events. (Author/JDD)

  16. Advanced Biosignal Processing

    CERN Document Server

    Nait-Ali, Amine

    2009-01-01

    Presents the principle of many advanced biosignal processing techniques. This title introduces the main biosignal properties and the acquisition techniques. It concerns one of the most intensively used biosignals in the clinical routine, namely the Electrocardiogram, the Elektroenzephalogram, the Electromyogram and the Evoked Potential

  17. Uranium recovery process

    International Nuclear Information System (INIS)

    A process of recovering uranium from an aqueous medium containing both it and sulfuric acid which comprises contacting the medium with an anion exchange resin having tertiary amine groups, said resin being the product of (a) the reaction of polyethyleneimine and a dihaloalkane and (b) the subsequent reductive alkylation of the product of (a)

  18. Pattern evaporation process

    Directory of Open Access Journals (Sweden)

    Z. Żółkiewicz

    2007-04-01

    Full Text Available The paper discusses the process of thermal evaporation of a foundry pattern. At several research-development centres, studies have been carried out to examine the physico-chemical phenomena that take place in foundry mould filled with polystyrene pattern when it is poured with molten metal. In the technique of evaporative patterns, the process of mould filling with molten metal (the said mould holding inside a polystyrene pattern is interrelated with the process of thermal decomposition of this pattern. The transformation of an evaporative pattern (e.g. made from foamed polystyrene from the solid into liquid and then gaseous state occurs as a result of the thermal effect that the liquid metal exerts onto this pattern. Consequently, at the liquid metal-pattern-mould phase boundary some physico-chemical phenomena take place, which until now have not been fully explained. When the pattern is evaporating, some solid and gaseous products are evolved, e.g. CO, CO2, H2, N2, and hydrocarbons, e.g. styrene, toluene, ethane, methane, benzene [16, 23]. The process of polystyrene pattern evaporation in foundry mould under the effect of molten metal is of a very complex nature and depends on many different factors, still not fully investigated. The kinetics of pattern evaporation is also affected by the technological properties of foundry mould, e.g. permeability, thermophysical properties, parameters of the gating system, temperature of pouring, properties of pattern material, and the size of pattern-liquid metal contact surface.

  19. Instruction sequence processing operators

    NARCIS (Netherlands)

    J.A. Bergstra; C.A. Middelburg

    2009-01-01

    This paper concerns instruction sequences whose execution involves the processing of instructions by an execution environment that offers a family of services and may yield a Boolean value at termination. We introduce a composition operator for families of services and three operators that have a di

  20. Anaerobic Digestion: Process

    DEFF Research Database (Denmark)

    Angelidaki, Irini; Batstone, Damien J.

    2011-01-01

    with very little dry matter may also be called a digest. The digest should not be termed compost unless it specifically has been composted in an aerated step. This chapter describes the basic processes of anaerobic digestion. Chapter 9.5 describes the anaerobic treatment technologies, and Chapter 9...

  1. The Serendipitous Research Process

    Science.gov (United States)

    Nutefall, Jennifer E.; Ryder, Phyllis Mentzell

    2010-01-01

    This article presents the results of an exploratory study asking faculty in the first-year writing program and instruction librarians about their research process focusing on results specifically related to serendipity. Steps to prepare for serendipity are highlighted as well as a model for incorporating serendipity into a first-year writing…

  2. Automated process planning system

    Science.gov (United States)

    Mann, W.

    1978-01-01

    Program helps process engineers set up manufacturing plans for machined parts. System allows one to develop and store library of similar parts characteristics, as related to particular facility. Information is then used in interactive system to help develop manufacturing plans that meet required standards.

  3. Agriculture and food processing

    International Nuclear Information System (INIS)

    This chapter discuss the application of nuclear technology in agriculture sector. Nuclear Technology has help agriculture and food processing to develop tremendously. Two techniques widely use in both clusters are ionization radiation and radioisotopes. Among techniques for ionizing radiation are plant mutation breeding, SIT and food preservation. Meanwhile radioisotopes use as a tracer for animal research, plant soil relations water sedimentology

  4. Ultrahigh bandwidth signal processing

    Science.gov (United States)

    Oxenløwe, Leif Katsuo

    2016-04-01

    Optical time lenses have proven to be very versatile for advanced optical signal processing. Based on a controlled interplay between dispersion and phase-modulation by e.g. four-wave mixing, the processing is phase-preserving, and hence useful for all types of data signals including coherent multi-level modulation formats. This has enabled processing of phase-modulated spectrally efficient data signals, such as orthogonal frequency division multiplexed (OFDM) signals. In that case, a spectral telescope system was used, using two time lenses with different focal lengths (chirp rates), yielding a spectral magnification of the OFDM signal. Utilising such telescopic arrangements, it has become possible to perform a number of interesting functionalities, which will be described in the presentation. This includes conversion from OFDM to Nyquist WDM, compression of WDM channels to a single Nyquist channel and WDM regeneration. These operations require a broad bandwidth nonlinear platform, and novel photonic integrated nonlinear platforms like aluminum gallium arsenide nano-waveguides used for 1.28 Tbaud optical signal processing will be described.

  5. Diasporic Relationships and Processes

    DEFF Research Database (Denmark)

    Singla, Rashmi

    2010-01-01

    How does moving across the geographical borders affect the relationships of diaspora members both here – in the country of residence and there- in the country of origin? The article delineates some of the processes through gendered experiences of the young adults perceived as active actors based...

  6. Stochastic conditional intensity processes

    DEFF Research Database (Denmark)

    Bauwens, Luc; Hautsch, Nikolaus

    2006-01-01

    model allows for a wide range of (cross-)autocorrelation structures in multivariate point processes. The model is estimated by simulated maximum likelihood (SML) using the efficient importance sampling (EIS) technique. By modeling price intensities based on NYSE trading, we provide significant evidence...

  7. Authenticizing the Research Process

    Directory of Open Access Journals (Sweden)

    Nora Elizondo-Schmelkes, MA, Ph.D. Candidate

    2011-06-01

    Full Text Available This study reflects the main concern of students (national and international who are trying to get a postgraduate degree in a third world (or “in means of development” country. The emergent problem found is that students have to finish their thesis or dissertation but they do not really know how to accomplish this goal. They resolve this problem by authenticizing the process as their own. The theory of authenticizing involves compassing their way to solve the problem of advancing in the research process. Compassing allows the student to authenticize his/her research process, making it a personal and „owned. process. The main categories of compassing are the intellectual, physical and emotional dimension patterns that the student has, learns and follows in order to finish the project and get a degree. Authenticizing implies to author with authenticity their thesis or dissertation. Compassing allows them to do this in their own way, at their own pace or time and with their own internal resources, strengths and weaknesses.

  8. Self-normalized processes

    CERN Document Server

    Heyde, C C

    2008-01-01

    Self-normalized processes are of common occurrence in probabilistic and statistical studies. This volume covers developments in the area, including self-normalized large and moderate deviations, and laws of the iterated logarithms for self-normalized martingales. It treats the theory and applications of self-normalization.

  9. Cascaded Poisson processes

    Science.gov (United States)

    Matsuo, Kuniaki; Saleh, Bahaa E. A.; Teich, Malvin Carl

    1982-12-01

    We investigate the counting statistics for stationary and nonstationary cascaded Poisson processes. A simple equation is obtained for the variance-to-mean ratio in the limit of long counting times. Explicit expressions for the forward-recurrence and inter-event-time probability density functions are also obtained. The results are expected to be of use in a number of areas of physics.

  10. Sustainability of abrasive processes

    DEFF Research Database (Denmark)

    Aurich, J.C.; Linke, B.; Hauschild, Michael Zwicky;

    2013-01-01

    This paper presents an overview of research on sustainability of abrasive processes. It incorporates results from a round robin study on ‘‘energy-efficiency of abrasive processes’’ which has been carried out within the scientific technical committee ‘‘abrasive processes’’ (STC G) of CIRP...

  11. Perspective of radiation processing

    International Nuclear Information System (INIS)

    The area of the applications of radiation techniques is very wide. This paper only relates to the applications of radiation techniques in industries including radiation chemical industry, radiation processing of foods and environmental protection by radiation, but the nuclear instruments and the instrumentations of radiation are out-side of our study. (author)

  12. Electrochemical Discharge Machining Process

    Directory of Open Access Journals (Sweden)

    Anjali V. Kulkarni

    2007-09-01

    Full Text Available Electrochemical discharge machining process is evolving as a promising micromachiningprocess. The experimental investigations in the present work substantiate this trend. In the presentwork, in situ, synchronised, transient temperature and current measurements have been carriedout. The need for the transient measurements arose due to the time-varying nature of the dischargeformation and time varying circuit current. Synchronised and transient measurements revealedthe discrete nature of the process. It also helped in formulating the basic mechanism for thedischarge formation and the material removal in the process. Temperature profile on workpieceand in electrochemical discharge machining cell is experimentally measured using pyrometer,and two varieties of K-type thermocouples. Surface topography of the discharge-affected zoneson the workpiece has been carried out using scanning electron microscope. Measurements andsurface topographical studies reveal the potential use of this process for machining in micronregime. With careful experimental set-up design, suitable supply voltage and its polarity, theprocess can be applied for both micromachining and micro-deposition. It can be extended formachining and or deposition of wide range of materials.

  13. Industrial Information Processing

    DEFF Research Database (Denmark)

    Svensson, Carsten

    2002-01-01

    This paper demonstrates, how cross-functional business processes may be aligned with product specification systems in an intra-organizational environment by integrating planning systems and expert systems, thereby providing an end-to-end integrated and an automated solution to the “build-to-order...

  14. BUSINESS PROCESS REENGINEERING

    Directory of Open Access Journals (Sweden)

    Magdalena LUCA (DEDIU

    2014-06-01

    Full Text Available Business process reengineering determines the change of organizational functions from an orientation focused on operations through a multidimensional approach. Former employees who were mere executors are now determined to take their own decisions and as a result the functional departments lose their reason to exist. Managers do not act anymore as supervisors, but mainly as mentors, while the employees focus more attention on customer needs and less than the head’s. Under these conditions, new organizational paradigms are required, the most important being that of learning organizations. In order to implement a reengineering of the economic processes and promoting a new organizational paradigm the information technology plays a decisive role. The article presents some results obtained in a research theme ANSTI funded by contract no. 501/2000. Economic and financial analysis is performed in order to know the current situation to achieve better results in the future. One of its objectives is the production analyzed as a labour process and the interaction elements of this process. The indicators investigated in the analysis of financial and economic activity of production reflect the development directions, the means and resources to accomplish predetermined objectives and express the results and effectiveness of what is expected.

  15. Food processing in action

    Science.gov (United States)

    Radio frequency (RF) heating is a commonly used food processing technology that has been applied for drying and baking as well as thawing of frozen foods. Its use in pasteurization, as well as for sterilization and disinfection of foods, is more limited. This column will review various RF heating ap...

  16. Revitalizing stagnated policy processes

    NARCIS (Netherlands)

    Termeer, C.J.A.M.; Kessener, B.

    2007-01-01

    Many complex policy processes face stagnations. People involved sense that continuing along existing paths will not produce those outcomes that are desired and deemed necessary. But changing and developing new action strategies is difficult. This article presents the results of an action research th

  17. Udfordringer for transkulturelle processer

    DEFF Research Database (Denmark)

    Petersen, Karen Bjerg

    2013-01-01

    at indskrænke mulighedsrummet for transkulturelle processer og for det at lære fra en terra nullius position. Der er fokus på empiriske undersøgelser af kultursyn i lovgivning om opholdstilladelse fra 2010, lovgivning om statsborgerskab fra 2006 samt kultursyn i den i 2003 indførte obligatoriske...

  18. Antecedents of institutional process

    Directory of Open Access Journals (Sweden)

    Emilio Díez de Castro

    2015-03-01

    Full Text Available This research is an attempt to advance the understanding of why organizations are responsive to the institutionalization process. To this end, we describe key elements that help explain the origin of this process. Furthermore, this research has followed a qualitative research methodology, using the ‘concept mapping’ technique, and grouping the different constructs items that act as motivating factors in the transformation of organizations to institutions. Methodologically we have tried to overlook the differentiation between old and new institutionalism, this approach follows the ideas of those researchers that question the suitability of drawing a line between the “old” and the “new” theory. We consider that the role of the CEO is essential in driving the institutionalization process, though usually their decisions are supported or have passed through the filter of the organization governance staff or the board of directors. Any progress that the organization makes depends fundamentally on the capabilities, perceptions, training and mindset of the CEO. The research results reinforce several key topics suggested in the literature on institutional theory. Particularly, we have proposed a classification with the motives that give rise to institutional initiatives: institutional authority; advantage in management; and, social involvement. This classification is consistent, to a larger extend, to the pillars of institutionalization that have been defined in the institutional theory literature, helping to understand, in more detail, the origin of the business processes and the background or motivations that generates and guide them.

  19. Thermal radiation processes

    NARCIS (Netherlands)

    Kaastra, J.S.; Paerels, F.; Durret, F.; Schindler, S.; Richter, P.

    2008-01-01

    We discuss the different physical processes that are important to understand the thermal X-ray emission and absorption spectra of the diffuse gas in clusters of galaxies and the warm-hot intergalactic medium. The ionisation balance, line and continuum emission and absorption properties are reviewed

  20. Supplier Evaluation Processes

    DEFF Research Database (Denmark)

    Hald, Kim Sundtoft; Ellegaard, Chris

    2011-01-01

    Purpose – The purpose of this paper is to illuminate how supplier evaluation practices are linked to supplier performance improvements. Specifically, the paper investigates how performance information travelling between the evaluating buyer and the evaluated suppliers is shaped and reshaped in th...... supplier evaluation process as its unit of analysis....