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Sample records for san marcos arch

  1. Historia del Estadio San Marcos de la Universidad Nacional Mayor de San Marcos

    OpenAIRE

    Meza Bazán, Mario Miguel

    2009-01-01

    La historia del Estadio San Marcos de la Universidad San Marcos de Lima es pretexto para estudiar sus precarias relaciones con el Estado en contextos de autoritarismo y clientelismo. El estadio, planeado al principio para ser el mayor coliseo deportivo de Perú, se convirtió con la donación del dictador Manuel Odría a la Universidad, en espacio de su futura ciudad universitaria. Señalamos que esta donación se hizo cuando el estadio no había sido concluido porque le resultaba demasiado oneroso ...

  2. Dal "San Marco" al "Vega". (English Title: From "San Marco" to Vega)

    Science.gov (United States)

    Savi, E.

    2017-10-01

    Apart from the two superpowers, among the other countries Italy has had an important role in astronautics. The roots of Italian astronautics' history runs deep in the hottest years of the Cold War, and it had its first remarkable achievement in the San Marco project..after years of advanced technologies testing, they achieved European cooperation and built VEGA, the current Arianespace light launcher.

  3. Final Critical Habitat for the San Marcos salamander (Eurycea nana)

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — To provide the user with a general idea of areas where final critical habitat for San Marcos salamander (Eurycea nana) occur based on the description provided in the...

  4. Uranium minerals from the San Marcos District, Chihuahua, Mexico

    Science.gov (United States)

    Reyes-Cortés, Manuel; Fuentes-Cobas, Luis; Torres-Moye, Enrique; Esparza-Ponce, Hilda; Montero-Cabrera, María Elena

    2010-05-01

    The mineralogy of the two uranium deposits (Victorino and San Marcos I) of Sierra San Marcos, located 30 km northwest of Chihuahua City, Mexico, was studied by optical microscopy, powder X-ray diffraction with Rietveld analysis, scanning electron microscopy with energy dispersive X-ray analysis, inductively coupled plasma spectrometry, and gamma spectrometry. At the San Marcos I deposit, uranophane Ca(UO2)2Si2O7·6(H2O) (the dominant mineral at both deposits) and metatyuyamunite Ca(UO2)(V2O8)·3(H2O) were observed. Uranophane, uraninite (UO2+x), masuyite Pb(UO2)3O3(OH)·3(H2O), and becquerelite Ca(UO2)6O4(OH)6 ·(8H2O) are present at the Victorino deposit. Field observations, coupled with analytical data, suggest the following sequence of mineralization: (1) deposition of uraninite, (2) alteration of uraninite to masuyite, (3) deposition of uranophane, (4) micro-fracturing, (5) calcite deposition in the micro-fractures, and (6) formation of becquerelite. The investigated deposits were formed by high-to low-temperature hydrothermal activity during post-orogenic evolution of Sierra San Marcos. The secondary mineralization occurred through a combination of hydrothermal and supergene alteration events. Becquerelite was formed in situ by reaction of uraninite with geothermal carbonated solutions, which led to almost complete dissolution of the precursor uraninite. The Victorino deposit represents the second known occurrence of becquerelite in Mexico, the other being the uranium deposits at Peña Blanca in Chihuahua State.

  5. Geochemical and hydrologic data for San Marcos Springs recharge characterization near San Marcos, Texas, November 2008--December 2010

    Science.gov (United States)

    Crow, Cassi L.

    2012-01-01

    During 2008–10, the U.S. Geological Survey, in cooperation with the San Antonio Water System, collected geochemical and hydrologic data in Bexar, Comal, and Hays Counties, Texas, to define and characterize the sources of recharge to San Marcos Springs. Precipitation samples were collected for stable isotope analysis at 1 site and water-quality samples were collected at 7 springs, 21 wells, and 9 stream sites in the study area between November 2008 and December 2010. Continuous water-quality monitors were installed in three springs, two wells, and at one stream site. Three continuous stream-gaging stations were installed to measure gage height and a stagedischarge rating was developed at two of the three sites. Depth to water below land surface was continuously measured in two wells.

  6. Preflight study of San Marco D/L GaAs solar cell panels

    Science.gov (United States)

    Day, J. H., Jr.

    1984-01-01

    The solar array for the San Marco D/L spacecraft is described and the performance of 4 GaAs solar cell panels are examined. In comparison to the typical Si solar cell panel for San Marco D/L, it is shown that each GaAs solar cell panel provides at least 23 percent more specific power at maximum output and 28 deg C. Also described here, are several measurements that will be made to evaluate the relative performance of Si and GaAs solar cell panels during the San Marco D/L flight.

  7. The aquatic annelid fauna of the San Marcos River headsprings, Hays County, Texas

    Science.gov (United States)

    Worsham, McLean L. D.; Gibson, Randy; Huffman, David G.

    2016-01-01

    Abstract The San Marcos River in Central Texas has been well studied and has been demonstrated to be remarkably specious. Prior to the present study, research on free-living invertebrates in the San Marcos River only dealt with hard bodied taxa with the exception of the report of one gastrotrich, and one subterranean platyhelminth that only incidentally occurs in the head spring outflows. The remainder of the soft-bodied metazoan fauna that inhabit the San Marcos River had never been studied. Our study surveyed the annelid fauna and some other soft-bodied invertebrates of the San Marcos River headsprings. At least four species of Hirudinida, two species of Aphanoneura, one species of Branchiobdellida, and 11 (possibly 13) species of oligochaetous clitellates were collected. Other vermiform taxa collected included at least three species of Turbellaria and one species of Nemertea. We provide the results of the first survey of the aquatic annelid fauna of the San Marcos Springs, along with a dichotomous key to these annelids that includes photos of some representative specimens, and line drawings to elucidate potentially confusing diagnostic structures. PMID:27853397

  8. The aquatic annelid fauna of the San Marcos River headsprings, Hays County, Texas

    Directory of Open Access Journals (Sweden)

    McLean L.D. Worsham

    2016-09-01

    Full Text Available The San Marcos River in Central Texas has been well studied and has been demonstrated to be remarkably specious. Prior to the present study, research on free-living invertebrates in the San Marcos River only dealt with hard bodied taxa with the exception of the report of one gastrotrich, and one subterranean platyhelminth that only incidentally occurs in the head spring outflows. The remainder of the soft-bodied metazoan fauna that inhabit the San Marcos River had never been studied. Our study surveyed the annelid fauna and some other soft-bodied invertebrates of the San Marcos River headsprings. At least four species of Hirudinida, two species of Aphanoneura, one species of Branchiobdellida, and 11 (possibly 13 species of oligochaetous clitellates were collected. Other vermiform taxa collected included at least three species of Turbellaria and one species of Nemertea. We provide the results of the first survey of the aquatic annelid fauna of the San Marcos Springs, along with a dichotomous key to these annelids that includes photos of some representative specimens, and line drawings to elucidate potentially confusing diagnostic structures.

  9. The aquatic annelid fauna of the San Marcos River headsprings, Hays County, Texas.

    Science.gov (United States)

    Worsham, McLean L D; Gibson, Randy; Huffman, David G

    2016-01-01

    The San Marcos River in Central Texas has been well studied and has been demonstrated to be remarkably specious. Prior to the present study, research on free-living invertebrates in the San Marcos River only dealt with hard bodied taxa with the exception of the report of one gastrotrich, and one subterranean platyhelminth that only incidentally occurs in the head spring outflows. The remainder of the soft-bodied metazoan fauna that inhabit the San Marcos River had never been studied. Our study surveyed the annelid fauna and some other soft-bodied invertebrates of the San Marcos River headsprings. At least four species of Hirudinida, two species of Aphanoneura, one species of Branchiobdellida, and 11 (possibly 13) species of oligochaetous clitellates were collected. Other vermiform taxa collected included at least three species of Turbellaria and one species of Nemertea. We provide the results of the first survey of the aquatic annelid fauna of the San Marcos Springs, along with a dichotomous key to these annelids that includes photos of some representative specimens, and line drawings to elucidate potentially confusing diagnostic structures.

  10. Il Doge and Easter Processions at San Marco in Early Modern Venice

    DEFF Research Database (Denmark)

    Petersen, Nils Holger

    2010-01-01

    –1800. Traditional representational features – from the early Middle Ages – e.g. of the women at Christ’s grave had been incorporated into these ducal processions during the sixteenth century with special roles for the doge. The complex of solemn processions from the ducal palace around the San Marco piazza...

  11. [The Hospital of the people of San Marcos. First in Aguascalientes, Mexico].

    Science.gov (United States)

    López de la Peña, Xavier A

    2013-01-01

    For centuries, the major hospital of San Juan de Dios has been historically considered the first hospital in Aguascalientes,Mexico, founded on 1685. However, in this paper we report that the Hospital of the people of San Marcos, in operation at least since 1630, was really the first hospital in the state in functions and which services to the needy population continued until today’s last notice, as of 1728. As evidence, we offer various first-hand documentary sources obtained in different archive files, which give credit to this modest charity institution. The aforementioned for the memory and pride of the history of health care in Aguascalientes and Mexico.

  12. A Note on the 'Medieval' Passion Liturgy in San Marco, Venice, in the Eighteenth Century

    DEFF Research Database (Denmark)

    Petersen, Nils Holger

    2008-01-01

    Begravelsen af hostien langfredag eftermiddag i San Marco foregik på stort set samme måde fra det 16. til det 18. århundrede. Og dog er der mindre ændringer, der på én gang kaster lys over og vanskeliggør forståelsen af transmissionen af denne ceremoni i disse århundreder. Artiklen diskuterer - på...

  13. Psychometric Study of the admission examination 2008-1 to the Universidad Nacional Mayor de San Marcos

    OpenAIRE

    Ponce D., Carlos; Facultad de Psicología, Universidad Nacional Mayor de San Marcos, Lima, Perú; Escurra M., Miguel; Facultad de Psicología, Universidad Nacional Mayor de San Marcos, Lima, Perú

    2014-01-01

    In the subsequent exploratory descriptive study, we formulated the following investigation question: Does the 2008-I admission exam of the Major National University of San Marcos, cover all the psychometric requirements demanded by an evaluation of that kind of nature? The General Objective of the investigation is to: Identify the basic psychometric characteristics which the 2008-I admission exam of the Major National University of San Marcos has presented, consisting in the reliability of th...

  14. Uranium series isotopes concentration in sediments at San Marcos and Luis L. Leon reservoirs, Chihuahua, Mexico

    Energy Technology Data Exchange (ETDEWEB)

    Méndez-García, C.; Montero-Cabrera, M. E., E-mail: elena.montero@cimav.edu.mx [Centro de Investigación en Materiales Avanzados, CIMAV, Miguel de Cervantes 120, 31109, Chihuahua, Chihuahua (Mexico); Renteria-Villalobos, M. [Facultad de Zootecnia y Ecología Universidad Autónoma de Chihuahua, Periferico Francisco R. Almada Km 1, 31410, Chihuahua (Mexico); García-Tenorio, R. [Applied Nuclear Physics Group, University of Seville, ETS Arquitectura, Avda. Reina Mercedes s/n, 41012 Seville (Spain)

    2008-01-01

    Spatial and temporal distribution of the radioisotopes concentrations were determined in sediments near the surface and core samples extracted from two reservoirs located in an arid region close to Chihuahua City, Mexico. At San Marcos reservoir one core was studied, while from Luis L. Leon reservoir one core from the entrance and another one close to the wall were investigated. ²³²Th-series, ²³⁸U-series, ⁴⁰K and ¹³⁷Cs activity concentrations (AC, Bq kg⁻¹) were determined by gamma spectrometry with a high purity Ge detector. ²³⁸U and ²³⁴U ACs were obtained by liquid scintillation and alpha spectrometry with a surface barrier detector. Dating of core sediments was performed applying CRS method to ²¹⁰Pb activities. Results were verified by ¹³⁷Cs AC. Resulting activity concentrations were compared among corresponding surface and core sediments. High ²³⁸U-series AC values were found in sediments from San Marcos reservoir, because this site is located close to the Victorino uranium deposit. Low AC values found in Luis L. Leon reservoir suggest that the uranium present in the source of the Sacramento – Chuviscar Rivers is not transported up to the Conchos River. Activity ratios (AR) ²³⁴U/²³⁸U and ²³⁸U/²²⁶Ra in sediments have values between 0.9–1.2, showing a behavior close to radioactive equilibrium in the entire basin. ²³²Th/²³⁸U, ²²⁸Ra/²²⁶Ra ARs are witnesses of the different geological origin of sediments from San Marcos and Luis L. Leon reservoirs.

  15. Uranium series isotopes concentration in sediments at San Marcos and Luis L. Leon reservoirs, Chihuahua, Mexico

    Science.gov (United States)

    Méndez-García, C.; Renteria-Villalobos, M.; García-Tenorio, R.; Montero-Cabrera, M. E.

    2014-07-01

    Spatial and temporal distribution of the radioisotopes concentrations were determined in sediments near the surface and core samples extracted from two reservoirs located in an arid region close to Chihuahua City, Mexico. At San Marcos reservoir one core was studied, while from Luis L. Leon reservoir one core from the entrance and another one close to the wall were investigated. 232Th-series, 238U-series, 40K and 137Cs activity concentrations (AC, Bq kg-1) were determined by gamma spectrometry with a high purity Ge detector. 238U and 234U ACs were obtained by liquid scintillation and alpha spectrometry with a surface barrier detector. Dating of core sediments was performed applying CRS method to 210Pb activities. Results were verified by 137Cs AC. Resulting activity concentrations were compared among corresponding surface and core sediments. High 238U-series AC values were found in sediments from San Marcos reservoir, because this site is located close to the Victorino uranium deposit. Low AC values found in Luis L. Leon reservoir suggest that the uranium present in the source of the Sacramento - Chuviscar Rivers is not transported up to the Conchos River. Activity ratios (AR) 234U/overflow="scroll">238U and 238U/overflow="scroll">226Ra in sediments have values between 0.9-1.2, showing a behavior close to radioactive equilibrium in the entire basin. 232Th/overflow="scroll">238U, 228Ra/overflow="scroll">226Ra ARs are witnesses of the different geological origin of sediments from San Marcos and Luis L. Leon reservoirs.

  16. Thorium isotopes in colloidal fraction of water from San Marcos Dam, Chihuahua, Mexico

    Science.gov (United States)

    Cabral-Lares, M.; Melgoza, A.; Montero-Cabrera, M. E.; Renteria-Villalobos, M.

    2013-07-01

    The main interest of this stiidy is to assess the contents and distribution of Th-series isotopes in colloidal fraction of surface water from San Marcos dam, because the suspended particulate matter serves as transport medium for several pollutants. The aim of this work was to assess the distribution of thorium isotopes (232Th and 230Th) contained in suspended matter. Samples were taken from three surface points along the San Marcos dam: water input, midpoint, and near to dam wall. In this last point, a depth sampling was also carried out. Here, three depth points were taken at 0.4, 8 and 15 meters. To evaluate the thorium behavior in surface water, from every water sample the colloidal fraction was separated, between 1 and 0.1 μm. Thorium isotopes concentraron in samples were obtained by alpha spectrometry. Activity concentrations obtained of 232Th and 230Th in surface points ranged from 0.3 to 0.5 Bq ṡ L-1, whereas in depth points ranged from 0.4 to 3.2 Bq ṡ L-1, respectively. The results show that 230Th is in higher concentration than 232Th in colloidal fraction. This can be attributed to a preference of these colloids to adsorb uranium. Thus, the activity ratio 230Th/232Th in colloidal fraction showed values from 2.3 to 10.2. In surface points along the dam, 230Th activity concentration decreases while 232Th concentration remains constant. On the other hand, activity concentrations of both isotopes showed a pointed out enhancement with depth. The results have shown a possible lixiviation of uranium from geological substrate into the surface water and an important fractionation of thorium isotopes, which suggest that thorium is non-homogeneously distributed along San Marcos dam.

  17. Uranium in the Surrounding of San Marcos-Sacramento River Environment (Chihuahua, Mexico)

    Science.gov (United States)

    Rentería-Villalobos, Marusia; Cortés, Manuel Reyes; Mantero, Juan; Manjón, Guillermo; García-Tenorio, Rafael; Herrera, Eduardo; Montero-Cabrera, Maria Elena

    2012-01-01

    The main interest of this study is to assess whether uranium deposits located in the San Marcos outcrops (NW of Chihuahua City, Mexico) could be considered as a source of U-isotopes in its surrounding environment. Uranium activity concentrations were determined in biota, ground, and surface water by either alpha or liquid scintillation spectrometries. Major ions were analyzed by ICP-OES in surface water and its suspended matter. For determining uranium activity in biota, samples were divided in parts. The results have shown a possible lixiviation and infiltration of uranium from geological substrate into the ground and surface water, and consequently, a transfer to biota. Calculated annual effective doses by ingestion suggest that U-isotopes in biota could not negligibly contribute to the neighboring population dose. By all these considerations, it is concluded that in this zone there is natural enhancement of uranium in all environmental samples analyzed in the present work. PMID:22536148

  18. Uranium in the Surrounding of San Marcos-Sacramento River Environment (Chihuahua, Mexico

    Directory of Open Access Journals (Sweden)

    Marusia Rentería-Villalobos

    2012-01-01

    Full Text Available The main interest of this study is to assess whether uranium deposits located in the San Marcos outcrops (NW of Chihuahua City, Mexico could be considered as a source of U-isotopes in its surrounding environment. Uranium activity concentrations were determined in biota, ground, and surface water by either alpha or liquid scintillation spectrometries. Major ions were analyzed by ICP-OES in surface water and its suspended matter. For determining uranium activity in biota, samples were divided in parts. The results have shown a possible lixiviation and infiltration of uranium from geological substrate into the ground and surface water, and consequently, a transfer to biota. Calculated annual effective doses by ingestion suggest that U-isotopes in biota could not negligibly contribute to the neighboring population dose. By all these considerations, it is concluded that in this zone there is natural enhancement of uranium in all environmental samples analyzed in the present work.

  19. Uranium in the surrounding of San Marcos-Sacramento River environment (Chihuahua, Mexico).

    Science.gov (United States)

    Rentería-Villalobos, Marusia; Cortés, Manuel Reyes; Mantero, Juan; Manjón, Guillermo; García-Tenorio, Rafael; Herrera, Eduardo; Montero-Cabrera, Maria Elena

    2012-01-01

    The main interest of this study is to assess whether uranium deposits located in the San Marcos outcrops (NW of Chihuahua City, Mexico) could be considered as a source of U-isotopes in its surrounding environment. Uranium activity concentrations were determined in biota, ground, and surface water by either alpha or liquid scintillation spectrometries. Major ions were analyzed by ICP-OES in surface water and its suspended matter. For determining uranium activity in biota, samples were divided in parts. The results have shown a possible lixiviation and infiltration of uranium from geological substrate into the ground and surface water, and consequently, a transfer to biota. Calculated annual effective doses by ingestion suggest that U-isotopes in biota could not negligibly contribute to the neighboring population dose. By all these considerations, it is concluded that in this zone there is natural enhancement of uranium in all environmental samples analyzed in the present work.

  20. Lifetime predictions for the Solar Maximum Mission (SMM) and San Marco spacecraft

    Science.gov (United States)

    Smith, E. A.; Ward, D. T.; Schmitt, M. W.; Phenneger, M. C.; Vaughn, F. J.; Lupisella, M. L.

    1989-01-01

    Lifetime prediction techniques developed by the Goddard Space Flight Center (GSFC) Flight Dynamics Division (FDD) are described. These techniques were developed to predict the Solar Maximum Mission (SMM) spacecraft orbit, which is decaying due to atmospheric drag, with reentry predicted to occur before the end of 1989. Lifetime predictions were also performed for the Long Duration Exposure Facility (LDEF), which was deployed on the 1984 SMM repair mission and is scheduled for retrieval on another Space Transportation System (STS) mission later this year. Concepts used in the lifetime predictions were tested on the San Marco spacecraft, which reentered the Earth's atmosphere on December 6, 1988. Ephemerides predicting the orbit evolution of the San Marco spacecraft until reentry were generated over the final 90 days of the mission when the altitude was less than 380 kilometers. The errors in the predicted ephemerides are due to errors in the prediction of atmospheric density variations over the lifetime of the satellite. To model the time dependence of the atmospheric densities, predictions of the solar flux at the 10.7-centimeter wavelength were used in conjunction with Harris-Priester (HP) atmospheric density tables. Orbital state vectors, together with the spacecraft mass and area, are used as input to the Goddard Trajectory Determination System (GTDS). Propagations proceed in monthly segments, with the nominal atmospheric drag model scaled for each month according to the predicted monthly average value of F10.7. Calibration propagations are performed over a period of known orbital decay to obtain the effective ballistic coefficient. Progagations using plus or minus 2 sigma solar flux predictions are also generated to estimate the despersion in expected reentry dates. Definitive orbits are compared with these predictions as time expases. As updated vectors are received, these are also propagated to reentryto continually update the lifetime predictions.

  1. BIM SYSTEM FOR THE CONSERVATION AND PRESERVATION OF THE MOSAICS OF SAN MARCO IN VENICE

    Directory of Open Access Journals (Sweden)

    F. Fassi

    2017-08-01

    Full Text Available The Basilica of San Marco in Venice is a well-known masterpiece of World Heritage. It is a real multi-faceted architecture. The management of the church and its construction site is very complicated, and requires an efficient system to collect and manage different kinds of data. The BIM approach appeared to be the most suitable to collect multi-source data, to monitor activities and guarantee the well-timed operations inside the church. The purpose of this research was to build a BIM of the Basilica, considering all aspects that characterize it and that require particular care. Many problems affected the phase of the acquisition of data, and forced the team to establish a clear working pipeline that allowed the survey simultaneously, hand in hand, with all the usual activities of the church. The fundamental principle for the organization of the whole work was the subdivision of the entire complex in smaller parts, which could be managed independently, both in the acquisition and the modelling stage. This subdivision also reflects the method used for the photogrammetric acquisition. The complexity of some elements, as capitals and statues, was acquired with different Level of Detail (LoD using various photogrammetric acquisitions: from the most general ones to describe the space, to the most detailed one 1:1 scale renderings. In this way, different LoD point clouds correspond to different areas or details. As evident, this pipeline allows to work in a more efficient way during the survey stage, but it involves more difficulties in the modelling stage. Because of the complexity of the church and the presence of sculptural elements represented by a mesh, from the beginning the problem of the amount of data was evident: it is nonsense to manage all models in a single file. The challenging aspect of the research job was the precise requirement of the Procuratoria di San Marco: to obtain the 1:1 representation of all the mosaics of the Basilica. This

  2. Bim System for the Conservation and Preservation of the Mosaics of San Marco in Venice

    Science.gov (United States)

    Fassi, F.; Fregonese, L.; Adami, A.; Rechichi, F.

    2017-08-01

    The Basilica of San Marco in Venice is a well-known masterpiece of World Heritage. It is a real multi-faceted architecture. The management of the church and its construction site is very complicated, and requires an efficient system to collect and manage different kinds of data. The BIM approach appeared to be the most suitable to collect multi-source data, to monitor activities and guarantee the well-timed operations inside the church. The purpose of this research was to build a BIM of the Basilica, considering all aspects that characterize it and that require particular care. Many problems affected the phase of the acquisition of data, and forced the team to establish a clear working pipeline that allowed the survey simultaneously, hand in hand, with all the usual activities of the church. The fundamental principle for the organization of the whole work was the subdivision of the entire complex in smaller parts, which could be managed independently, both in the acquisition and the modelling stage. This subdivision also reflects the method used for the photogrammetric acquisition. The complexity of some elements, as capitals and statues, was acquired with different Level of Detail (LoD) using various photogrammetric acquisitions: from the most general ones to describe the space, to the most detailed one 1:1 scale renderings. In this way, different LoD point clouds correspond to different areas or details. As evident, this pipeline allows to work in a more efficient way during the survey stage, but it involves more difficulties in the modelling stage. Because of the complexity of the church and the presence of sculptural elements represented by a mesh, from the beginning the problem of the amount of data was evident: it is nonsense to manage all models in a single file. The challenging aspect of the research job was the precise requirement of the Procuratoria di San Marco: to obtain the 1:1 representation of all the mosaics of the Basilica. This requirement

  3. Concept, objectives and methodological tools in the design of USW in the municipality of San Marcos (Guipuzcoa, ES); Concepto, objetivos y elementos metodologicos en el diseno de la recogida selectiva de RSU de la mancomunidad de San Marcos

    Energy Technology Data Exchange (ETDEWEB)

    Abel Casado, J.; Eguiluz Saenz, I. [Ein, S.L. (Spain); Castillo, I.

    1995-12-31

    The authors describe the principles followed by the association of municipalities of San Marcos (Guipuzcoa, Spain) to set up a separated collection Urban Solid Waste Plan. The policy of this association has three basic goals: first, maximum profitable use of USW by recovering materials, obtaining biogas; second, waste treatment on a sanitary landfill and third, elimination control and following those points used for uncontrolled delivery of wastes.

  4. Experimental exposure of adult San Marcos salamanders and larval leopard frogs to the cercariae of Centrocestus formosanus.

    Science.gov (United States)

    Huston, D C; Cantu, V; Huffman, D G

    2014-04-01

    The gill parasite Centrocestus formosanus (Trematoda: Heterophyidae) is an exotic parasite of concern in Texas because it has been shown to infect multiple threatened and endangered fish species. The purpose of this study was to determine if C. formosanus could present a threat to larval anurans, as well as threatened neotenic salamanders endemic to the spring-fed systems of Texas. We exposed adults of the San Marcos salamander Eurycea nana (Caudata: Plethodontidae) and tadpoles of the Rio Grande leopard frog Lithobates berlandieri (Anura: Ranidae) to the cercariae of C. formosanus . The San Marcos salamander showed no signs of metacercarial infection, suggesting that E. nana may be refractory to C. formosanus cercariae. Centrocestus formosanus readily infects the gills of leopard frog tadpoles, but the metacercariae apparently died prior to reaching maturity in our tadpoles.

  5. Badua, diosa o dios, y los ritos del toro de San Marcos

    Directory of Open Access Journals (Sweden)

    Francisco Javier Burgaleta Mezo

    2007-01-01

    Full Text Available En este artículo discutimos, en primer lugar, el carácter atribuido a Bandua como divinidad masculina, asimilable tanto a Marte indígena como al Genio, en base a una pátera de la colección Calzadilla de Badajoz y procedencia incierta (quizás S. Cosmado, en Mangualde, Portugal, en la que aparece una representación que entendemos es de esa divinidad, como una posible Tutela claramente femenina con cornucopia y otros detalles. En segundo lugar, analizamos la cuestión de los orígenes del rito del toro de San Marcos, en una fiesta cuyo origen Olivares Pedreño (1997 remonta a épocas primitivas, hasta establecer un vínculo con Bandua, asimilado a Marte indígena y al toro. Una posición seguidora en parte de Caro Baroja. Nosotros, sin embargo, la contrastamos con las problemáticas generales de la fiesta del toro en época moderna, subrayando su relación con determinadas cuestiones estructurales.In this article we discuss, in the first place, the character attributed to Bandua like masculine divinity, assimilable as much to indigenous Mars as to the Genius, based on a patera of the collection Calzadilla of Badajoz and uncertain origin (maybe S. Cosmado, in Mangualde, Portugal, in which a representation appears that we understand it is of that divinity, like a possible one clearly feminine Tutela with cornucopia and other details. In second place, we analyze the question of the origins of the rite of San Marcos’ bull, in a ritual whose origin Olivares Pedreño (1997 goes back to primitive times, until establishing a bond with Bandua, assimilated to Indigenous Mars and to the bull. A position that is follower partly of Caro Baroja. For us, however, contrast with the general problems of the ritual of the bull in modern time, underlining their relationship with certain structural questions.

  6. Behavioral and physiological antipredator responses of the San Marcos salamander, Eurycea nana.

    Science.gov (United States)

    Davis, Drew R; Gabor, Caitlin R

    2015-02-01

    Exposure to predatory stimuli typically results in the elevation of circulating glucocorticoid levels and a behavioral response of freezing or escape behavior in many prey species. Corticosterone (CORT) is the main glucocorticoid in amphibians and is known to be important in modulating many behaviors and developmental functions. The federally threatened San Marcos salamander, Eurycea nana, decreases activity in response to both native and introduced predatory fish, however, experience may further influence these interactions. To better understand the indirect effects of fish predators on this salamander, we examined both the antipredator behavior and water-borne CORT release rates in response to chemical cues (kairomones) from two fish species that varied in temporal risk of predation: (1) a low encounter frequency predator (largemouth bass, Micropterus salmoides), (2) a high encounter frequency predator (redbreast sunfish, Lepomis auritus), and (3) a blank water control. Salamanders reduced activity (antipredator response) after exposure to both predator treatments, but not to the blank water control, and the response to M. salmoides was significantly stronger than that to L. auritus. The CORT response (post-stimulus/pre-stimulus release rates) did not differ between the blank water control and L. auritus treatments, and both were significantly less than the CORT response to M. salmoides. Overall, E. nana showed a decreased antipredator response and no CORT response towards the high encounter frequency L. auritus as compared to the low encounter frequency M. salmoides. Eurycea nana may mute antipredator and CORT responses to high temporal frequency predators. There was, however, no correlation between CORT release rates and antipredator behavior, which suggests that the presence of predators may be affecting CORT response and behavior independently.

  7. Origin and characteristics of discharge at San Marcos Springs based on hydrologic and geochemical data (2008-10), Bexar, Comal, and Hays Counties, Texas

    Science.gov (United States)

    Musgrove, MaryLynn; Crow, Cassi L.

    2012-01-01

    The Edwards aquifer in south-central Texas is a productive and important water resource. Several large springs issuing from the aquifer are major discharge points, popular locations for recreational activities, and habitat for threatened and endangered species. Discharges from Comal and San Marcos Springs, the first and second largest spring complexes in Texas, are used as thresholds in groundwater management strategies for the Edwards aquifer. Comal Springs is generally understood to be supplied by predominantly regional groundwater flow paths; the hydrologic connection of San Marcos Springs with the regional flow system, however, is less understood. During November 2008–December 2010, a hydrologic and geochemical investigation of San Marcos Springs was conducted by the U.S. Geological Survey (USGS) in cooperation with the San Antonio Water System. The primary objective of this study was to define and characterize sources of discharge from San Marcos Springs. During this study, hydrologic conditions transitioned from exceptional drought (the dry period, November 1, 2008 to September 8, 2009) to wetter than normal (the wet period, September 9, 2009 to December 31, 2010), which provided the opportunity to investigate the hydrogeology of San Marcos Springs under a wide range of hydrologic conditions. Water samples were collected from streams, groundwater wells, and springs at and in the vicinity of San Marcos Springs, including periodic (routine) sampling (every 3–7 weeks) and sampling in response to storms. Samples were analyzed for major ions, trace elements, nutrients, and selected stable and radiogenic isotopes (deuterium, oxygen, carbon, strontium). Additionally, selected physicochemical properties were measured continuously at several sites, and hydrologic data were compiled from other USGS efforts (stream and spring discharge). Potential aquifer recharge was evaluated from local streams, and daily recharge or gain/loss estimates were computed for several

  8. Survey and Modelling for the Bim of Basilica of San Marco in Venice

    Science.gov (United States)

    Fregonese, L.; Taffurelli, L.; Adami, A.; Chiarini, S.; Cremonesi, S.; Helder, J.; Spezzoni, A.

    2017-02-01

    The Basilica of San Marco is a singular case in the field of Cultural heritage, as it constitutes a construction site always active for the maintenance and preservation of the basilica itself. The continuous intervention of conservation, due to the particular environmental conditions of Venice and the opening to the public, together with the complexity of the building itself, imposes the need to identify an optimized management system. For this reason, in 2013 the Procurator of St. Marco Basilica commissioned the construction of a 3D model of the Basilica to be used for the creation of a BIM. The model must meet the required precision of the scale of 1:50, and should also include, in addition to the geometric description, a description of the mosaic and marble surfaces of the basilica through high resolution orthophoto which are essential for the restoration of the mosaics. The complexity of the church and the large and continuous flow of public led to work in non-optimal conditions especially for the acquisition stage. The basilica has certain peculiarities that led to some important choices, for example the use of photogrammetry instead of laser scanning technique. The same technique was preferred also by the need to realize, in addition to the geometric model, high-resolution orthophotos of marbles and mosaic surfaces. The modelling of the basilica has highlighted a number of problems related to the building features. The basilica, indeed, is the result of the juxtaposition of elements (capitals, columns) with different origin, which therefore cannot be standardized in special libraries. Moreover, especially in the extensive mosaic areas, there are not edges that characterize the architecture, but only beveled surfaces. This has resulted in a change also in the modeling paradigm with the need to identify alternative systems even for the construction of simple elements. Therefore, we decided to model using NURBS since it is the method that allows greater

  9. Centenario de la Sede Central de la Facultad de Medicina de la Universidad Nacional Mayor de San Marcos

    Directory of Open Access Journals (Sweden)

    Oscar G Pamo

    2004-09-01

    Full Text Available El 6 de setiembre de 1903 se inauguró el local de la Facultad de Medicina de la Universidad Mayor de San Marcos de Lima con frente a la Avenida Grau y contiguo al Jardín Botánico. Este nuevo local reemplazó a la antigua sede situada en la Plaza de Santa, después Plaza Italia y hoy Plaza Raimondi, en el sector del Cercado de Lima, donde habían funcionado el Real Colegio de Medicina y Cirugía de San Fernando, desde 1808, y luego la Facultad de Medicina de Lima desde 1856. La obra se gestó con el presidente Nicolás de Piérola en 1897, se empezó a construir en 1899 y fue inaugurado por el presidente Romaña.

  10. Application of the alpha spectrometry for the study of core sediment extracted in the San Marcos dam in Chihuahua

    Energy Technology Data Exchange (ETDEWEB)

    Mendez G, C.; Renteria V, M.; Montero C, M. E. [Centro de Investigacion en Materiales Avanzados, S. C., Miguel de Cervantes No. 120, Complejo Industrial Chihuahua, 31109 Chihuahua (Mexico); Garcia T, R., E-mail: elena.montero@cimav.edu.mx [Universidad de Sevilla, Escuela Tecnica Superior de Arquitectura, Grupo de Fisica Nuclear Aplicada, Av. Reina Mercedes s/n, 41012 Sevilla (Spain)

    2012-06-15

    The determination of the specific activities of {sup 210}Po and isotopic uranium by alpha spectrometry was performed in a sediment core from San Marcos Dam. The objective of this work was to analyze the vertical distribution of isotopic uranium and {sup 210}Po and the behavior of these radionuclides along sediment core collected from the San Marcos Dam. Sample was divided into 11 sections, in which {sup 210}Po and isotopic uranium were determined using liquid-liquid extraction with tributyl phosphate. Furthermore, it was made a comparison between the tributyl phosphate technique and the technique of extraction chromatography using UTEVA resins for uranium. The results of specific activities for {sup 210}Po show a trend to decrease along the core, whereas the uranium isotopic does not show a pointed trend. The results of isotopic ratios between the {sup 234}U and {sup 238}U show that they are close to secular equilibrium in each of the core sections. The comparison between the two uranium extraction techniques indicates that the chemical yield is better using the UTEVA technique than tributyl phosphate extraction. (Author)

  11. La actividad neotectónica en la sierra Baja de San Marcos - Cruz del Eje, flanco occidental de las Sierras Pampeanas Orientales

    OpenAIRE

    A Massabie; A. Sanguinetti; G Lo Forte; M Cegarra

    2003-01-01

    El área pedemontana de San Marcos Sierra-Cruz del Eje constituye, en la provincia de Córdoba, Argentina, una comarca clave para el análisis neotectónico en las Sierras Pampeanas Orientales. En esta región se han realizado estudios centrados en la unidad morfoestructural sierra Baja de San Marcos donde, aplicando un control múltiple de datos estructurales, geomorfológicos, sedimentológicos, paleontológicos y radimétricos, se ha determinado temporal y espacialmente la evolución de la actividad ...

  12. The Cretaceous sediment-hosted copper deposits of San Marcos (Coahuila, Northeastern Mexico): An approach to ore-forming processes

    Science.gov (United States)

    García-Alonso, Donají; Canet, Carles; González-Partida, Eduardo; Villanueva-Estrada, Ruth Esther; Prol-Ledesma, Rosa María; Alfonso, Pura; Caballero-Martínez, Juan Antonio; Lozano-Santa Cruz, Rufino

    2011-04-01

    In the San Marcos ranges of Cuatrociénegas, NE Mexico, several sediment-hosted copper deposits occur within the boundary between the Coahuila Block, a basement high mostly granitic in composition and Late Paleozoic to Triassic in age, and the Mesozoic Sabinas rift basin. This boundary is outlined by the regional-scale synsedimentary San Marcos Fault. At the basin scale, the copper mineralization occurs at the top of a ˜1000 m thick red-bed succession (San Marcos Formation, Berrisian), a few meters below a conformable, transitional contact with micritic limestones (Cupido Formation, Hauterivian to Aptian). It consists of successive decimeter-thick roughly stratiform copper-rich horizons placed just above the red-beds, in a transitional unit of carbonaceous grey-beds grading to micritic limestones. The host rocks are fine- to medium-grained arkoses, with poorly sorted and subangular to subrounded grains. The detrital grains are cemented by quartz and minor calcite; besides, late iron oxide grain-coating cement occurs at the footwall unmineralized red-beds. The source area of the sediments, indicated by their modal composition, is an uplifted basement. The contents of SiO 2 (40.70-87.50 wt.%), Al 2O 3 (5.91-22.00 wt.%), K 2O (3.68-12.50 wt.%), Na 2O (0.03-2.03 wt.%) and CaO (0.09-3.78 wt.%) are within the ranges expected for arkoses. Major oxide ratios indicate that the sedimentary-tectonic setting was a passive margin. The outcropping copper mineralization essentially consists in a supergene assemblage of chrysocolla, malachite and azurite. All that remains of the primary mineralization are micron-sized chalcocite grains shielded by quartz cement. In addition, pyrite subhedral grains occur scattered throughout the copper-mineralized horizons. In these weathered orebodies copper contents range between 4.24 and 7.72 wt.%, silver between 5 and 92 ppm, and cobalt from 8 to 91 ppm. Microthermometric measurements of fluid inclusions in quartz and calcite crystals from

  13. La actividad neotectónica en la sierra Baja de San Marcos - Cruz del Eje, flanco occidental de las Sierras Pampeanas Orientales Neotectonic activity in the Sierra Baja de San Marcos-Cruz del Eje area, west flank of Sierras Pampeanas Orientales

    OpenAIRE

    A Massabie; A. Sanguinetti; G Lo Forte; M Cegarra

    2003-01-01

    El área pedemontana de San Marcos Sierra-Cruz del Eje constituye, en la provincia de Córdoba, Argentina, una comarca clave para el análisis neotectónico en las Sierras Pampeanas Orientales. En esta región se han realizado estudios centrados en la unidad morfoestructural sierra Baja de San Marcos donde, aplicando un control múltiple de datos estructurales, geomorfológicos, sedimentológicos, paleontológicos y radimétricos, se ha determinado temporal y espacialmente la evolución de la actividad ...

  14. Agresividad de las precipitaciones en la subcuenca del río San Marcos, Puebla, México

    Directory of Open Access Journals (Sweden)

    Rosalía Castelan Vega

    2013-07-01

    Full Text Available La falta de información de la erosividad de la lluvia en la Sierra Norte de Puebla, ha impedido una evaluación objetiva de su contribución al proceso de erosión. El presente trabajo se planteó como objetivo determinar el potencial erosivo y la variabilidad temporal de las precipitaciones en la Subcuenca del río San Marcos, a partir de diferentes índices que miden el grado de agresividad de las precipitaciones, así como establecer relaciones entre los mismos. Se utilizaron los registros pluviométricos de diez años de siete estaciones meteorológicas. Se calcularon los Índices de Fournier Anual (IFA, Modificado de Fournier (IMF, Concentración de Precipitaciones (ICP y Erosividad Total (IET. El estudio permite concluir que los riesgos de erosión son mayores en la zona de influencia de las estaciones climáticas de Xicotepec, Venustiano Carranza y Progreso, ubicadas en altitudes comprendidas entre 1279 y 886 msnm. Las precipitaciones según el ICP se concentran de manera estacional moderada de julio a octubre, y el IET evidencia que las precipitaciones presentan alta potencialidad erosiva. Los resultados fundamentarían el desarrollo de una estrategia agroecológica de conservación de suelos en función de la agresividad climática que presenta la zona de estudio

  15. Baccharis Salicifolia development in the presence of high concentrations of uranium in the arid environment of San Marcos, Chihuahua

    Energy Technology Data Exchange (ETDEWEB)

    Luna P, M. Y.; Alarcon H, M. T.; Silva S, M.; Renteria V, M; Rodriguez V, M. A.; Herrera P, E.; Reyes C, M.; Montero C, M. E., E-mail: elena.montero@cimav.edu.m [Centro de Investigacion en Materiales Avanzados, S. C., Miguel de Cervantes 120, Complejo Industrial Chihuahua, 31109 Chihuahua (Mexico)

    2011-02-15

    In humid zones and marine environments the bio indicator contaminants by trace elements are well established. However, in arid zones it is more difficult to find these tools because there is less biodiversity. The objective of this paper was to analyze the behavior of the Baccharis salicifolia plant in areas with high uranium concentration in arid zones, to determine the characteristics of tolerance and possible use as a bio monitor for the presence of such contaminants. For this project a uraniferous zone was selected in San Marcos, located northwest of the City of Chihuahua. A total of 8 sampling points of the plant and soil were located here. Each sample was divided into the root and the stem and leaves to determine the specific activity of the uranium in both parts of the plant and its sediments. The determination of the specific activities of the total uranium in the samples was obtained by liquid scintillation with alpha-beta separation. The results indicate a tendency for the plant to accumulate the uranium in its different parts, and to trans locate it to its stem and leaves. The plant is resistant to high concentrations of uranium, not showing any specific changes in relation to non contaminated areas that might indicate the presence of the contaminant. Therefore, its use as a bio monitor species is limited. (Author)

  16. La actividad neotectónica en la sierra Baja de San Marcos - Cruz del Eje, flanco occidental de las Sierras Pampeanas Orientales Neotectonic activity in the Sierra Baja de San Marcos-Cruz del Eje area, west flank of Sierras Pampeanas Orientales

    Directory of Open Access Journals (Sweden)

    A Massabie

    2003-12-01

    Full Text Available El área pedemontana de San Marcos Sierra-Cruz del Eje constituye, en la provincia de Córdoba, Argentina, una comarca clave para el análisis neotectónico en las Sierras Pampeanas Orientales. En esta región se han realizado estudios centrados en la unidad morfoestructural sierra Baja de San Marcos donde, aplicando un control múltiple de datos estructurales, geomorfológicos, sedimentológicos, paleontológicos y radimétricos, se ha determinado temporal y espacialmente la evolución de la actividad neotectónica del fallamiento andino. Se presentan evidencias sobre la reactivación cuaternaria tardía de la Falla Sierra Baja de San Marcos, conspicua falla inversa de vergencia occidental con componentes de desplazamiento de rumbo y de inclinación, enlazando los episodios tectónicos con las modificaciones del paisaje. Estas modificaciones son expresadas por los depósitos de endicamiento del río Quilpo, por los niveles aterrazados, vinculados a los cauces actuales de los ríos de la Costa (San Marcos y Quilpo, y por los cambios en su desarrollo de la red de avenamiento principal de la región. La edad 14C corregida de 2.560±120 aap, obtenida para los sedimentos del endicamiento permite acotar un primer episodio de actividad, Holoceno tardío, de la Falla Sierra Baja de San Marcos. Las observaciones efectuadas sobre la misma estructura, en una trinchera excavada para su investigación, confirman su extensión hacia el noroeste, dan evidencias sobre una segunda etapa de movimientos en el Holoceno tardío y determinan sus características estructurales comunes a otras fallas con actividad neotectónica estudiadas en las Sierras Pampeanas Orientales, las cuales responden a una mecánica transpresiva.The San Marcos Sierra-Cruz del Eje mountain-piedmont (Córdoba province, Argentina is a key area in order to analyse the neotectonic behaviour of the Sierras Pampeanas Orientales. In this place, the evolution of recent Andean faulting activity has

  17. Agresividad de las precipitaciones en la subcuenca del río San Marcos, Puebla, México

    Directory of Open Access Journals (Sweden)

    Rosalía Castelán Vega

    2014-01-01

    Full Text Available La falta de información de la erosividad de la llu- via en la Sierra Norte de Puebla, ha impedido una evaluación objetiva de su contribución al proceso de erosión. En este trabajo se planteó como objetivo determinar el potencial erosivo y la variabilidad temporal de las precipitaciones en la subcuenca del río San Marcos, a partir de diferentes índices que miden el grado de agresividad de las precipitaciones, así como establecer relaciones entre los mismos. Se utilizaron los registros pluviométricos de diez años de siete estaciones meteorológicas. Se calcularon los Índices de Fournier Anual (IFA, Modificado de Fournier (IMF, Concentración de Precipitaciones (ICP y Erosividad Total (IET. El estudio permite concluir que los riesgos de erosión son mayores en la zona de influencia de las estaciones climáticas de Xicote- pec, Venustiano Carranza y Progreso, ubicadas en altitudes comprendidas entre 1 279 y 886 msnm. Las precipitaciones según el ICP se concentran de manera estacional moderada de julio a octubre, y el IET evidencia que las precipitaciones presentan alta potencialidad erosiva. Los resultados funda- mentarían el desarrollo de una estrategia agroecológica de conservación de suelos en función de la agresividad climática que presenta la zona en estudio.

  18. Egresados: razones para estudiar la carrera profesional de Nutrición - Universidad Nacional Mayor de San Marcos, 2006

    Directory of Open Access Journals (Sweden)

    Margot Quintana

    2007-06-01

    Full Text Available Objetivo: Identificar las razones de los egresados para estudiar la carrera profesional de Nutrición. Diseño: Estudio cualicuantitativo exploratorio. Lugar: Escuela Académico Profesional de Nutrición, Universidad Nacional Mayor de San Marcos. Participantes: Egresados de la Escuela de Nutrición. Intervenciones: Previo consentimiento informado, se aplicó dos grupos focales con 7 participantes cada uno, dos entrevistas en profundidad y un cuestionario a 34 egresados. Principales medidas de resultados: Razones para postular, continuar y concluir sus estudios de Nutrición. Resultados: Del total, 73% eran mujeres, edad promedio 22,4 años, 30 alumnos respondieron la encuesta. Eligieron Nutrición porque alguien personalmente les informó sobre la carrera (30%, en la academia pre-universitaria escuchó sobre ella (23%, posibilidad de trasladarse (20%, menor puntaje para ingresar (17%. La continuaron porque tuvieron cursos motivadores y por su desempeño práctico en campo. Concluyeron, porque tiene diferentes campos de acción (73%, para contribuir a mejorar la situación de salud y gustan trabajar directamente con la población. Percibían que tenían adecuada preparación académica, hubiesen preferido mayor práctica y capacitación en algunos temas, como nutrición deportiva. Esperan desempeñarse en nutrición comunitaria o clínica. Conclusiones: Los egresados ingresaron a la carrera profesional de Nutrición por influencia externa y por conveniencia para trasladarse a otra carrera, continuaron por los cursos motivadores y la concluyeron por convicción propia, ante la variedad de áreas de desempeño laboral.

  19. Residencias San Marcos

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    Rubio, Gómez, Arquitectos

    1963-03-01

    Full Text Available This house is divided into two main zones. One of them is the ground floor, which is devoted to business purposes. The other consists of the remaining floors, which contain apartments. An ample parking area has been provided in front of the building. The flats are, alternatively, simple, and so called duplex apartments. This basic design allows for a great variety of particular arrangements, including one, two, three or four bedrooms. It has been arranged for the lift to have only five stops for the ten floor levels. The owner lives in the attic, which contains large living rooms, bedrooms, amusement facilities and services. The total built up area is 5,100 ms2. The building contains 30 apartments, as well as porter's quarters, an engine room, incinerators, water tanks, etc. The outer walls are faced in stone, and concrete, and doors and windows are of stainless steel. The type and quality of the services ensure that this building provides every reasonable comfort to its occupants.El inmueble construido está dividido en dos grandes zonas: las plantas bajas destinadas a locales comerciales; y los pisos altos, a apartamentos. Los locales ocupan la casi totalidad de las fachadas, y son de doble o de media altura. Se ha previsto una amplia zona de aparcamiento frente al edificio. El bloque de apartamentos alterna los simples con los dúplex. Este criterio permite disponer una gran variedad de tipos: de un dormitorio, de dos, de tres y de cuatro. Además, se ha conseguido que el ascensor tenga sólo cinco paradas en diez plantas de altura. En el ático está la vivienda del propietario, compuesta de amplios salones, dormitorios, salas de juegos y servicios. La superficie total de construcción es de 5.100 m2. El edificio tiene 30 apartamentos, además de sus servicios de portería, cuartos de máquinas, incineradores, depósitos de agua, etc. El acabado de las fachadas se ha realizado con chapado de piedra, hormigón visto y carpintería metálica, de acero inoxidable. El número y perfección de los servicios contribuyen a que este conjunto satisfaga adecuadamente el programa previsto y garantice un funcionamiento normal en este tipo de construcciones.

  20. Política habitacional comparada: Mendoza y San Luis en el marco de la descentralización

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    Delia Palero

    2006-01-01

    Full Text Available El artículo plantea un análisis comparado entre las políticas habitacionales desarrolladas por dos provincias argentinas: Mendoza y San Luis. La federalización de los recursos del FONAVI en el país, ocurrida en l992, puso fin a una prolongada etapa de política habitacional centralizada en Argentina. El período analizado abarca la década comprendida entre ese año y el 2002. A nivel internacional se consolida el proceso de globalización que, en el terreno de la vivienda, se tradujo en el predominio del enfoque facilitador. Los casos elegidos representan dos modelos diametralmente distintos que, sin embargo, alcanzaron resultados que podrían calificarse de exitosos en el concierto nacional. Mientras el primero se inscribe en el paradigma central-sectorial, el segundo adhiere en forma predominante al enfoque facilitador. El análisis de política comparada ha sido contextualizado en los escenarios político, social, cultural y económico que le dieron marco, sentido y viabilidad a ambos modelos, que marcaron tanto sus fortalezas como sus debilidades y que explican los resultados alcanzados. Vinculación con la formación universitaria: La Cátedra Problemática de la Vivienda se encuentra en la Facultad de Ciencias Políticas y Sociales (U.N.Cuyo e incluye en su programa unidades referidas a política habitacional en Argentina y en la provincia de Mendoza. En tal sentido, se estima que los resultados obtenidos a partir de este trabajo resultan un insumo de interés para estudiantes de trabajo social, sociología y ciencia política, en tanto permiten analizar en profundidad conceptos como centralizacióndescentralización, participación, articulación de actores, focalización, eficiencia y eficacia en la gestión de la política habitacional, entre otros, y cómo éstos se manifiestan en la práctica política concreta.

  1. The San Marcos Pueblo Archaeological Site: A Review and Update of Ongoing Work by the Summer of Applied Geophysical Experience (SAGE)

    Science.gov (United States)

    Poje, M. S. L.; Berry, K.; Brandt, T. W.; Irwin, T. C.; Creighton, A.; MacLennan, K. J.; Ferguson, J. F.; Pellerin, L.

    2014-12-01

    The San Marcos Pueblo, one of the largest and most important cities of the pre-European Southwest, has long been a place of curiosity for archaeologists and geophysicists alike. Despite numerous archaeological investigations, primarily test excavations and surface surveys carried out at San Marcos from the early 1900s to the present, the site retains pottery sherds scattered along the surface from when it was first occupied in the thirteenth century to its abandonment during the Pueblo Revolt of 1680. Geophysical investigations have identified locations of kivas (ceremonial pits), middens (trash heaps), room blocks and possible metallurgy activity in the area. The site is located south of Santa Fe, NM and to the east of the Cerrillos Hills, a source for lead ore and turquoise. The students of SAGE have studied the San Marcos Pueblo for the past 11 years, and produced a map of the northeastern portion of the Pueblo colloquially called 'El Mapa Grande.' Ground penetrating radar (GPR), magnetics, and electromagnetic (EM) data were acquired on 30mx30m grids and seismic refraction data on various profiles throughout El Mapa Grande. During the 2014 field season new GPR data were acquired on two grids, magnetics data on one, and multiple grids were resurveyed with magnetics and EM to enhance resolution. The most recent GPR data extend coverage of two large anomalies that are part of linear EW-trending structures previously identified and consistent with a possible block wall or midden. Low GPR scatter and circular magnetic lows define several kivas. A target area in the NE of El Mapa Grande was thought to be related to metallurgic activity. Analysis of previous seismic data did not resolve any subsurface features corresponding to a metallurgy operation, but detected the magnetically-chaotic Ancha formation. Comparison with magnetic profile data support the interpretation that this anomaly is caused by a sub-crop of the Ancha Formation.

  2. Histopathological frequency of perianal neoplasms in dogs: casuistry of the Veterinary Pathology Laboratory of the National University of San Marcos (2005-2012)

    OpenAIRE

    Vicente R., Karla; Laboratorio de Histología, Embriología y Patología Animal, Facultad de Medicina Veterinaria, Universidad Nacional Mayor de San Marcos, Lima; Perales C., Rosa; Laboratorio de Histología, Embriología y Patología Veterinaria, Facultad de Medicina Veterinaria, Universidad Nacional Mayor de San Marcos, Lima Perú.; Tabacchi N., Luis; Laboratorio de Histología, Embriología y Patología Veterinaria, Facultad de Medicina Veterinaria, Universidad Nacional Mayor de San Marcos, Lima

    2015-01-01

    The aim of this study was to determine the frequency of perianal neoplasms in dogs from samples histopathologically diagnosed in the Animal Pathology Laboratory of the National University of San Marcos in the period 2005 to 2012. A total of 52 cases of perianal tumors were diagnosed in 1283 cases of canine tumors (4.1%). The hepatoid gland adenoma was the most frequent (46.2%, 24/52). El objetivo del presente estudio fue determinar la frecuencia de neoplasias perianales en caninos mediante...

  3. Epidemiología del Politraumatismo en Pacientes adultos en el Servicio de Urgencias del Hospital San Marcos de Chinchiná. Años 2004-2006

    OpenAIRE

    Giraldo, Francy Lorena; Martínez, Magda Sofía; Narváez G, Catalina; Pérez, Ángela Yurany; Pérez, Diana Cristina; Torres, Natalia Margarita; González, Sandra Patricia; Castaño Castrillón, José Jaime; Jurado, Juan Carlos

    2006-01-01

    Objetivo: El presente estudio tiene como propósito determinar la epidemiología del politraumatismo en pacientes de 15-45 años que ingresaron al servicio de urgencias del Hospital San Marcos de Chinchiná con diagnóstico de politraumatismo durante los años 2004 al 2006. Materiales y Métodos: se efectuó un estudio descriptivo, se revisaron un total de 577 atenciones de urgencias, se revisaron la totalidad de las atenciones de 2004, 2005, y lo corrido del 2006 hasta el mes de abril. Se incluye...

  4. The Marianas-San Marcos vein system: characteristics of a shallow low sulfidation epithermal Au-Ag deposit in the Cerro Negro district, Deseado Massif, Patagonia, Argentina

    Science.gov (United States)

    Vidal, Conrado Permuy; Guido, Diego M.; Jovic, Sebastián M.; Bodnar, Robert J.; Moncada, Daniel; Melgarejo, Joan Carles; Hames, Willis

    2016-08-01

    The Cerro Negro district, within the Argentinian Deseado Massif province, has become one of the most significant recent epithermal discoveries, with estimated reserves plus resources of ˜6.7 Moz Au equivalent. The Marianas-San Marcos vein system contains about 70 % of the Au-Ag resources in the district. Mineralization consists of Upper Jurassic (155 Ma) epithermal Au- and Ag-rich veins of low to intermediate sulfidation style, hosted in and genetically related to Jurassic intermediate composition volcanic rocks (159-156 Ma). Veins have a complex infill history, represented by ten stages with clear crosscutting relationships that can be summarized in four main episodes: a low volume, metal-rich initial episode (E1), an extended banded quartz episode with minor mineralization (E2), a barren waning stage episode (E3), and a silver-rich late tectonic-hydrothermal episode (E4). The first three episodes are interpreted to have formed at the same time and probably from fluids of similar composition: a 290-230 °C fluid dominated by meteoric and volcanic waters (-3‰ to -0‰ δ18Owater), with <3 % NaCl equivalent salinity and with a magmatic source of sulfur (-1 to -2 ‰ δ34Swater). Metal was mainly precipitated at the beginning of vein formation (episode 1) due to a combination of boiling at ˜600 to 800 m below the paleowater table, and associated mixing/cooling processes, as evidenced by sulfide-rich bands showing crustiform-colloform quartz, adularia, and chlorite-smectite banding. During episodes 2 and 3, metal contents progressively decrease during continuing boiling conditions, and veins were filled by quartz and calcite during waning stages of the hydrothermal system, and the influx of bicarbonate waters (-6 to -8.5 ‰ δ18Owater). Hydrothermal alteration is characterized by proximal illite, adularia, and silica zone with chlorite and minor epidote, intermediate interlayered illite-smectite and a distal chlorite halo. This assemblage is in agreement with

  5. Comentarios sobre el desarrollo de la Zoología en la Facultad de Ciencias Biológicas de la Universidad Nacional Mayor de San Marcos

    Directory of Open Access Journals (Sweden)

    Pedro G. Aguilar Fernández

    2008-12-01

    Full Text Available Estimados colegas y futuros colegas: Es conocido por todos que el 27 de noviembre de 1947, cuando mi Promoción cursaba su penúltimo año de estudios, se instituyó el “Día del Biólogo Peruano”, a pedido de uno de nosotros, en ocasión del agasajo anual que los discípulos y los ex alumnos ofrecían al profesor Dr. Augusto Weberbauer, insigne maestro, fundador de la Escuela Botánica Peruana, ejemplar biólogo y pilar académico de nuestra profesión en el Perú. He tardado demasiado en plasmar estas ideas, principalmente recuerdos, sobre los cambios y las fortalezas que adquirió la Zoología en la Universidad Nacional Mayor de San Marcos (UNMSM durante tantos años, con la formación y desempeño de muchísimos colegas distinguidos que han honrado nuestra profesión, como investigadores o como maestros, en esta área de la biología; muchos, desde hace más de cinco décadas, entre ellos quien les habla, que tuvimos la inspiración y el ejemplo en Augusto Weberbauer y en sus discípulos directos.

  6. Nuevos profesores eméritos de San Marcos: Dra. Luz Sarmiento Bendezú y el Dr. Hernando De Macedo Ruiz

    Directory of Open Access Journals (Sweden)

    Julio Manosalva Bacigalupo

    2013-06-01

    Full Text Available El día martes 17 de diciembre del año 2002, en el recinto histórico de la Capilla de la Virgen de Loreto del Centro Cultural de la Universidad Nacional Mayor de San Marcos del Parque Universitario, en presencia del Dr. Manuel Burga Díaz, Rector de nuestra Cuatricentenaria Casa de Estudios, el Vicerrector Académico Dr. Raúl Izaguirre Maguiña, la Vicerrectora Administrativa, Dra. Beatriz Herrera García, decanos, autoridades de nuestra Facultad, profesores, compañeros de promoción, familiares y amigos, se rindió un emotivo homenaje a dos grandes maestros forjadores de Escuelas de Investigación y docencia, que han contribuido positivamente al desarrollo de la zoología en la antigua Facultad de Ciencias y posteriormente en la Facultad de Ciencias Biológicas: la Dra. Luz Sarmiento Bendezú y el Dr. Hernando de Macedo Ruíz.

  7. CONFLICTOS POR TIERRAS EN LOS "PUEBLOS DE INDIOS" DE CÓRDOBA. EL PUEBLO DE SAN MARCOS ENTRE FINES DEL SIGLO XVII Y PRINCIPIOS DEL SIGLO XIX

    Directory of Open Access Journals (Sweden)

    Sonia Tell

    2012-01-01

    Full Text Available En este trabajo se abordan los conflictos por tierras de “pueblos de indios” de Córdoba en el siglo XVIII a partir de un estudio de caso: el del pueblo de San Marcos. En base a un pleito que se prolongó por cuatro décadas (entre 1769 y 1809, se reconstruyen las estrategias de la elite local para legalizar la usurpación de tierras de los pueblos de indios y las estrategias indígenas para recuperarlas, basándose en el título de la demarcación y asignación de tierras de reducción realizada en 1694 por orden del visitador Luján de Vargas y en el apoyo de los funcionarios de la Real Audiencia de Buenos Aires. Asimismo, se reconstruyen algunas características de la tenencia de la tierra, del sistema de autoridades y de la organización comunitaria de las actividades productivas, a fin de reevaluar los planteos realizados en estudios previos sobre la desestructuración avanzada de los pueblos de indios de la jurisdicción de Córdoba a fines de la colonia.

  8. The supplemental instruction program: Student perceptions of the learning environment and impact on student academic achievement in college science at California State University, San Marcos

    Science.gov (United States)

    Hizer, Suzanne Elizabeth

    Higher education in science has been criticized and calls to increase student learning and persistence to degree has been recognized as a national problem by the Department of Education, the National Science Foundation, the National Research Council, and the National Academy of Sciences. One mode of academic assistance that may directly address this issue is the implementation of Supplemental Instruction (SI) in science courses. SI is a specific model of academic assistance designed to help students in historically difficult science classes master course content, thus increasing their academic achievement and retention. This study assessed the SI program at California State University, San Marcos, in supported science courses. Specifically, academic achievement based on final course grades were compared between SI participating and nonparticipating students, multiple affective factors were measured at the beginning and end of the semester, and students' perceptions of the classroom and SI session learning environments recorded. Overall, students who attended five or more SI sessions achieved higher final course grades. Students who chose to participate in SI had higher initial levels of responsibility and anxiety. Additionally, SI participants experienced a reduction in anxiety over the semester whereas nonparticipants experienced an increase in anxiety from beginning to the end of the semester. The learning environment of SI embodies higher levels of constructivist principles of active learning such as cooperation, cohesiveness, innovation, and personalization---with one exception for the physics course, which is a based on problem-based learning. Structural equation modeling of variables indicates that high self-efficacy at the end of the semester is directly related to high final course grades; this is mediated by cohesion in the classroom and the cooperation evidenced in SI sessions. These findings are elaborated by student descriptions of what happened in SI

  9. Los bosques de Abies guatemalensis Rehder de San Marcos, Guatemala: una oportunidad para su restauración ecológica

    Directory of Open Access Journals (Sweden)

    José Vicente Martínez Arévalo

    2016-08-01

    Full Text Available El pinabete, Abies guatemalensis Rehder, es una especie distribuida en las montañas altas de Guatemala. Según el Consejo Nacional de Áreas Protegidas (Conap, sus poblaciones se encuentran severamente fragmentadas. Por su rareza y fragmentación, esta especie se encuentra protegida por el Convenio sobre el Comercio Internacional de Especies Amenazadas de Fauna y Flora Silvestre (Cites, lo que pone en relieve la importancia de la recuperación de sus bosques para su debida conservación. El éxito de su establecimiento puede mejorase al sembrarla junto a plantas nodriza, que le ayudarían a sobrevivir a las condiciones secas del año y las heladas que se presentan en las zonas de mayor altitud del país durante los meses de noviembre a febrero. Este trabajo muestra las características físicas, químicas y de vegetación del área de tres bosques de pinabete (A. guatemalensis de la parte alta de San Marcos. Además, presenta la propuesta de restauración ecológica estimulada simulando la sucesión vegetal del área. Se elaboraron mapas, y describieron tres bosques de pinabete y sus alrededores; se presenta el estudio de la composición química del suelo y la vegetación y su representación en diferentes etapas de sucesión vegetal. Además, se propone la recuperación de áreas alrededor de parches de bosque, consistente en establecer plantas arbustivas en lugares abiertos donde aún no hay; por su parte en aquellas áreas donde ya se encuentren arbustos, se propone utilizarlos como plantas nodriza para establecer árboles de varias especies buscando mantener biodiversidad de especies arbóreas.

  10. Dinámica de cambio espacio-temporal de uso del suelo de la subcuenca del río San Marcos, Puebla, México

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    Rosalía Castelán Vega

    2007-01-01

    Full Text Available En México se presentan procesos de cambio de uso del suelo muy rápidos; no obstante, no existe información confiable y detallada sobre estos procesos. El objetivo de este trabajo fue evaluar los cambios espaciales de uso del suelo en la Subcuenca del río San Marcos, Puebla, así como generar una base de datos que permita cuantificar y caracterizar estos cambios durante los años 1976, 1993 y 2000. El estudio se basa en la interpretación de fotografías aéreas, documentos oficiales e históricos, análisis cartográfico del Instituto Nacional de Estadística, Geografía e Informática (INEGI y del Inventario Forestal Nacional (IFN, así como verificación en campo. Finalmente, se generaron mapas de uso del suelo, tasas de cambio, una matriz de transición y una de probabilidad de permanencia. El análisis de los datos mostró una reducción importante de la masa forestal durante las últimas tres décadas. Entre 1976 y 2000, la superficie de bosque mesófilo de montaña disminuyó 62.65%, la de selvas 62% y la de pastizal cultivado 29.51%; en contraste, se incrementaron las áreas destinadas a pastizal inducido (7.3%, cultivos anuales (73.62% y permanentes (151%; finalmente, las zonas urbanas aumentaron 547% en la región

  11. High arch

    Science.gov (United States)

    Pes cavus; High foot arch ... High foot arches are much less common than flat feet. They are more likely to be caused ... difficult to fit into shoes. People who have high arches most often need foot support. A high ...

  12. Análisis bibliométrico de las tesis de pregrado de la Facultad de Medicina de la Universidad Nacional Mayor de San Marcos

    Directory of Open Access Journals (Sweden)

    Rubén Valle

    2009-03-01

    Full Text Available Introducción: La investigación es un eje importante en la Educación Médica, por lo que resulta fundamental promoverla desde los primeros años. La tesis es una investigación que tiene como propósito adquirir el título profesional; sin embargo, se ha ido observando una disminución en su producción al existir otras modalidades de titulación. Objetivos: Determinar el número de tesis, áreas de investigación, especialidades y diseños metodológicos utilizados. Determinar la colaboración entre especialidades, según área y diseño de investigación. Determinar la proporción de tesis publicadas en una revista indizada. Diseño: Estudio bibliométrico. Lugar: Facultad de Medicina, Universidad Nacional Mayor de San Marcos. Material bibliográfico: Tesis de pregrado de Medicina Humana. Intervenciones: Se recolectó las tesis sustentadas durante el periodo 1998-2008, de la base de datos de la Biblioteca de la Facultad. Se realizó la lectura de los resúmenes y en caso de dudas se procedió a la lectura completa. Se analizó los patrones de frecuencia por medio de los Programas Microsoft Office Excel 2007 y el Análisis y Visualización de Redes Pajek. Principales medidas de resultados: Número de tesis, áreas de investigación, especialidades y diseños metodológicos; colaboración entre especialidades; proporción de tesis publicadas en una revista indizada. Resultados: Se encontró 93 tesis; las áreas clínicas y quirúrgicas fueron las más estudiadas, en 60% y 19% de tesis, respectivamente. El diseño más usado fue el descriptivo-transversal y las especialidades más estudiadas fueron pediatría e infectología, las cuales colaboraron más con otras especialidades. El 11% de las tesis fue publicado en una revista indizada. Conclusiones: La producción de tesis es baja con una tendencia irregular en el periodo estudiado, llegándose a publicar en una revista indizada 1 de cada 10 tesis, aproximadamente.

  13. FRECUENCIA DEL TUMOR VENÉREO TRANSMISIBLE EN CANINOS: CASUÍSTICA DEL LABORATORIO DE PATOLOGÍA VETERINARIA DE LA UNIVERSIDAD NACIONAL MAYOR DE SAN MARCOS (PERIODO 1998 – 2004).

    OpenAIRE

    Mendoza V., Narda; Laboratorio de Histología, Embriología y Patología Veterinaria, Facultad de Medicina Veterinaria, Universidad Nacional Mayor de San Marcos, Lima-Perú.; Chavera C., Alfonso; Laboratorio de Histología, Embriología y Patología Veterinaria, Facultad de Medicina Veterinaria, Universidad Nacional Mayor de San Marcos, Lima Perú.; Falcón P., Néstor; Laboratorio de Medicina Veterinaria Preventiva, Facultad de Medicina Veterinaria, Universidad Nacional Mayor de San Marcos, Lima; Perales C., Rosa; Laboratorio de Histología, Embriología y Patología Veterinaria, Facultad de Medicina Veterinaria, Universidad Nacional Mayor de San Marcos, Lima Perú.

    2011-01-01

    El presente estudio se realizó para determinar la frecuencia del Tumor Venéreo Transmisible (TVT) en canes de la ciudad de Lima durante el periodo 1998-2004 y establecer su relación con el sexo, edad y raza; así como determinar las localizaciones más frecuentes de las neoplasias. Se analizaron los registros de citología e histopatología del Laboratorio de Patología de la Facultad de Medicina Veterinaria de la Universidad Nacional Mayor de San Marcos. Se encontró una frecuencia de TVT de 8.4% ...

  14. Frecuencia relativa de fasciolosis en niños de edad escolar en las provincias de San Marcos, Cajabamba y Celendín, departamento de Cajamarca - año 2010

    OpenAIRE

    Orfanos, Nikolás; Cabanillas, Oswaldo; León, Daphne

    2016-01-01

    El objetivo del estudio fue determinar la frecuencia relativa de casos de Fasciolosis en niños en edad escolar en las provincias de San Marcos, Cajabamba y Celendín, departamento de Cajamarca, que formaron parte del “Estudio de prevalencia de fasciolosis en humanos en la región Cajamarca – periodo 2010”. Para ello se recuperaron 248 fichas epidemiológicas en los que se encontraron 27 niños positivos a la prueba de ELISA, representando una frecuencia relativa de 10.9 %. La única variable asoci...

  15. Prevalencia de parásitos intestinales en niños de diferentes niveles de educación del distrito de San Marcos, Ancash, Perú.

    OpenAIRE

    Jacinto, Eleuterio; Facultad de Medicina, Universidad Privada San Pedro, Chimbote.; Aponte, Edwin; Centro de Salud de San Marcos, Microred San Marcos, Ancash.; Arrunátegui-Correa, Víctor; Municipalidad Distrital de San Marcos, Ancash.

    2012-01-01

    Objetivo: Investigar la prevalencia de parasitosis intestinal en estudiantes del Distrito de San Marcos, en el departamento de Ancash, Perú. Material y métodos: Se analizaron en total 1303 muestras de heces de niños de nivel inicial, primario y secundario, mediante examen directo. Resultados: Se encontró uno o más parásitos intestinales en 65,0% de los estudiantes. De las 845 muestras positivas para parásitos, se encontró un parasito en 82,0% dos en18,0% predominando los protozoarios sobre lo...

  16. Foraminíferos bentónicos aglutinados de los Depósitos turbidíticos. Área Nápoles, Sur de San Marcos de Tarrazú, Costa Rica Agglutinated foraminifera from turbiditic deposits, Nápoles Area, South of San Marcos, Tarrazú, Costa Rica

    Directory of Open Access Journals (Sweden)

    Lolita Campos

    2012-12-01

    Full Text Available En el sector de Nápoles, San Marcos de Tarrazú, situado dentro de una ancha faja estructural aún no completamente definida en el límite entre las cuencas sedimentarias de Valle Central y Térraba, la muestra LOR-10 brindó una asociación faunística de exclusivamente foraminíferos bentónicos. Como no fueron encontrados foraminíferos planctónicos no se pudieron realizar determinaciones bioestratigráficas. Del total de individuos identificados, estos corresponden a 3 subórdenes, 9 superfamilias y 33 especies. Con respecto al índice de diversidad de Shannon (H, para interpretaciones paleoecológicas el resultado fue de H=1.4, indicando condiciones de ciénagas y ambientes marginales marinos. Los foraminíferos bentónicos identificados hasta nivel de especie en la muestra, poseen rangos de existencia muy amplio señalando una zona que se extiende del Triásico al Reciente. Desde el punto de vista paleoecológico en relación con la salinidad, fueron determinados los siguientes porcentajes 53.3% de rotaliinos, 41.9% de texturaliinos y 2.2% de miliólidos, valores que son indicadores de ambientes de laguna salobre, estuario y plataforma, esta mezcla de fauna de ambientes distintos sugiere que se trata de un depósito alóctono retrabajado. La identificación de Portatrochammina sp. (4.3% que aparece entre los 500 y 2000 m, pero es abundante aproximadamente entre los 600 y 700 m y de Cibicides lobatulus (3.2% indicadora de la zona batial media superior (500-1500 m, confirman la interpretación del ambiente del depósito como un abanico submarino de talud del ámbito batial medio. Así mismo la preeminencia de los foraminíferos aglutinados sugiere un importante aporte de detrito hacia la cuenca. Por último, las cuencas estratificadas, frías, profundas, con altas tasas de sedimentación favorecen la preservación de las asociaciones de foraminíferos aglutinados sobre los carbonatadosIn the area of Napoles, South of San Marcos, Tarraz

  17. Religión oficial y religiosidad popular en el marco del Real Convento de San Pablo de Sevilla durante el siglo XVIII

    OpenAIRE

    Carlos José Romero Mensaque

    2002-01-01

    El Real Convento de San Pablo de Sevilla, de la Orden de Predicadores, ha sido desde su fundación en el siglo XIII, un centro de capital importancia en la conformación de la religiosidad de la ciudad, tanto en su vertiente ortodoxa u oficial orientada hacia una élite socio-económica, como en la más popular e integradora de las grandes masas. Durante el siglo XVIII, época de máxima efervescencia de la religiosidad barroca, conviven en este cenobio y bajo la tutela dominica dos significadas cor...

  18. Religión oficial y religiosidad popular en el marco del Real Convento de San Pablo de Sevilla durante el siglo XVIII

    Directory of Open Access Journals (Sweden)

    Carlos José Romero Mensaque

    2002-01-01

    Full Text Available El Real Convento de San Pablo de Sevilla, de la Orden de Predicadores, ha sido desde su fundación en el siglo XIII, un centro de capital importancia en la conformación de la religiosidad de la ciudad, tanto en su vertiente ortodoxa u oficial orientada hacia una élite socio-económica, como en la más popular e integradora de las grandes masas. Durante el siglo XVIII, época de máxima efervescencia de la religiosidad barroca, conviven en este cenobio y bajo la tutela dominica dos significadas corporaciones, que son paradigmas de ambas tendencias.The "San Pablo» Royal Convent of Seville, of Preachers' Order, has been from its foundation in the century XIII one center of cardinal importance in the conformation of the religiousness of the city, so much in its orthodox or official slope orientated towards a socio-economic elite, since (as, like in the most popular and of integration of the big masses. During the century XVIII, epoch of maximum effervescence of the baroque religiousness, they coexist in this monastery and under the guardianship Dominican two important corporations, which are paradigms of both trends.

  19. Epidemiología de las dermatomicosis en 30 años de estudio en el Instituto de Medicina Tropical Daniel A Carrión, Universidad Nacional Mayor de San Marcos, Lima, Perú

    Directory of Open Access Journals (Sweden)

    Vilma Bejar

    2014-04-01

    Full Text Available Objetivos: Determinar la evolución epidemiológica de las dermatomicosis en pacientes de consultorio externo durante el periodo 1976- 2005. Diseño: Estudio descriptivo, retrospectivo y analítico. Lugar: Instituto de Medicina Tropical ‘Daniel Alcides Carrión’, Universidad Nacional Mayor de San Marcos, Lima, Perú. Participantes: Pacientes positivos a dermatomicosis. Intervenciones: Se revisó las historias clínicas de 7 185 (55,3% casos positivos a dermatomicosis. El instrumento de investigación empleado fue la ficha de levantamiento de información. Principales medidas de resultados: Agente etiológico, estación del año, sexo, edad y forma clínica. Resultados: El estudio demostró que los más afectados fueron del grupo etario de 16 a 30 años (42,7% y sexo femenino (52,1%. La dermatomicosis más frecuente fue la onicomicosis (43,6%. Los agentes patógenos de mayor prevalencia fueron Trichophyton rubrum (33,2%, Cándida albicans (15,3%, Cándida no albicans (11,8%, Trichophyton mentagrophytes (9,4%, Malassezia spp (9,1% y las infecciones mixtas (7,2%. Las micosis de cuero cabelludo muestran continuo aumento durante todo el estudio. El dermatofito Epidermophyton floccosum fue aislado por última vez en la década del 90. A partir de 1995 ha aumentado la prevalencia de Cándida no albicans y se encontró como especie re-emergente a la levadura Cándida tropicalis. Conclusiones: Entre los años 1976 y 2005 hubo importantes variaciones epidemiológicas en relación a las formas clínicas y a la etiología de las dermatomicosis.

  20. Evaluación de la concentración de mercurio en arroz (Oryza sativa crudo y cocido procedente del municipio de San Marcos- Sucre y zona aurífera del municipio de Ayapel - Córdoba

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    Marcela P. Argumedo G.

    2015-08-01

    Full Text Available Introducción: Los metales se encuentran en todos los alimentos, siendo de mayor preocupación la presencia de metales tóxicos como el mercurio, debido a los efectos adversos que causa en la salud del hombre, lo que lo ha convertido en un grave problema de salud pública. Objetivo: Evaluar la concentración de mercurio en arroz (Oryza sativa crudo y cocido procedente del municipio de San Marcos - Sucre y zona aurífera del municipio de Ayapel - Córdoba. Metodología: El presente estudio es de tipo exploratorio y experimental. La toma de muestras fue realizada en tiempo de recolección del arroz (septiembre y se tomaron tres repeticiones de cada tipo o variedad de arroz (Fedearroz 2000 - LD 473. La cocción del alimento fue realizada en el laboratorio en condiciones similares a las utilizadas por habitantes de las comunidades donde fueron recolectadas las muestras. Para los análisis de relación estadística entre los tratamientos de cocción y la concentración de mercurio total en muestras, fue realizado un análisis de correlación simple. La determinación de diferencias estadísticamente significativas entre las muestras de arroz crudo y cocido fue realizada mediante un t-test y Anova. Resultados: Se presentaron concentraciones bajas de mercurio total y metilmercurio en las muestras de arroz crudo y cocido. Además, fue detectado que el proceso de cocción del alimento disminuye las concentraciones de HgT, en los diferentes tratamientos de tiempo de cocción. Conclusiones: Los habitantes de los municipios en estudio están expuestos a concentraciones mínimas de mercurio que podrían ser perjudiciales para su salud, debido a la alta ingesta de este cereal en la dieta de las comunidades.

  1. Semblanza de mis 37 años de servicio en la Cátedra de Bioquímica, el Instituto de Bioquímica y Nutrición y el Centro de Investigación de Bioquímica y Nutrición de la Facultad de Medicina, Universidad Nacional Mayor de San Marcos

    OpenAIRE

    Villavicencio-Núñez, Marino Marino; Centro de Investigación de Bioquímica y Nutrición Alberto Guzmán Barrón. Facultad de Medicina, Universidad Nacional Mayor de San Marcos. Lima, Perú

    2013-01-01

    En el presente artículo, el Dr. Marino Villavicencio Núñez, profesor emérito de la Universidad Nacional Mayor de San Marcos, narra sus vivencias desde los primeros pasos en la docencia como profesor Jefe de prácticas a tiempo parcial y los hechos que dejaron huella en su formación, permitiendo ser considerado como uno de los más destacados investigadores bioquímicos, con reconocimiento nacional e internacional. El Dr. Villavicencio es parte y gestor de la historia del Centro de Investigación ...

  2. Semblanza de mis 37 años de servicio en la Cátedra de Bioquímica, el Instituto de Bioquímica y Nutrición y el Centro de Investigación de Bioquímica y Nutrición de la Facultad de Medicina, Universidad Nacional Mayor de San Marcos

    OpenAIRE

    Marino Villavicencio-Núñez

    2007-01-01

    En el presente artículo, el Dr. Marino Villavicencio Núñez, profesor emérito de la Universidad Nacional Mayor de San Marcos, narra sus vivencias desde los primeros pasos en la docencia como profesor Jefe de prácticas a tiempo parcial y los hechos que dejaron huella en su formación, permitiendo ser considerado como uno de los más destacados investigadores bioquímicos, con reconocimiento nacional e internacional. El Dr. Villavicencio es parte y gestor de la historia del Centro de Investigación ...

  3. Vegetables, Coctails & Reflections / Marco Laimre

    Index Scriptorium Estoniae

    Laimre, Marko, 1968-

    2006-01-01

    Pealkirja "Vegetables, Coctails & Reflections" kandis Tallinna Kunstihoones 8.04.-28.05.2006 avatud Elin Kardi, Marko Mäetamme, Marco Laimre ja Andres Tali ühisnäitusel "Vägivald ja propaganda" Marco Laimre installatsioon. Marco Laimre esinemine raadiosaates "kunst.er" Klassikaraadios 16.04.2006

  4. Vegetables, Coctails & Reflections / Marco Laimre

    Index Scriptorium Estoniae

    Laimre, Marko, 1968-

    2006-01-01

    Pealkirja "Vegetables, Coctails & Reflections" kandis Tallinna Kunstihoones 8.04.-28.05.2006 avatud Elin Kardi, Marko Mäetamme, Marco Laimre ja Andres Tali ühisnäitusel "Vägivald ja propaganda" Marco Laimre installatsioon. Marco Laimre esinemine raadiosaates "kunst.er" Klassikaraadios 16.04.2006

  5. Entrevista: Marcos Cueto Interview: Marcos Cueto

    Directory of Open Access Journals (Sweden)

    2008-10-01

    Full Text Available Marcos Cueto é formado em história e ciências sociais e professor do Departamento de Ciências Sociais e Saúde da Faculdade de Saúde Pública e Administração da Universidade Cayetano Heredia em Lima, Peru. Desde 1991 vem lecionando e pesquisando temas que envolvem a história da saúde pública, bem como as relações com a saúde internacional e a saúde global. Sua preocupação em estabelecer um diálogo entre as ciências sociais e a saúde tem produzido estudos sobre a história das doenças epidêmicas no Peru, a história da saúde pública na América Latina e, mais recentemente, tem realizado pesquisas sobre a história da Organização Pan-Americana de Saúde (Opas e da Organização Mundial da Saúde (OMS. Em 1998, ganhou com a publicação de El regreso de las epidemias: salud y enfermedad en el Perú del siglo XX o prêmio ibero-americano de melhor livro de ciências sociais e humanidades sobre a América Latina publicado em espanhol. Nesta entrevista1, concedida à revista Trabalho, Educação e Saúde em 2006, Cueto expõe reflexões decorrentes de suas últimas pesquisas sobre saúde internacional, saúde global e a atuação dos organismos internacionais como a OMS e a Opas.Marcos Cueto is a history and social sciences graduate and professor at the Department of Social Sciences and Health of the College of Public Health and Administration of Cayetano Heredia University, in Lima, Peru. Since 1991, he has been teaching and researching issues related to the history of public health, in addition to the relationship with international and global health. His concern with setting dialogue between social sciences and health has resulted in studies on the history of epidemics in Peru, the history of public health in Latin America, and, more recently, he has researched the history of the Pan American Health Organization (PAHO and of the World Health Organization (WHO. In 1998, he was granted with The Return of Epidemics: Health and

  6. Intraoral gothic arch tracing.

    Science.gov (United States)

    Rubel, Barry; Hill, Edward E

    2011-01-01

    In order to create optimum esthetics, function and phonetics in complete denture fabrication, it is necessary to record accurate maxillo-mandibular determinants of occlusion. This requires clinical skill to establish an accurate, verifiable and reproducible vertical dimension of occlusion (VDO) and centric relation (CR). Correct vertical relation depends upon a consideration of several factors, including muscle tone, inter-dental arch space and parallelism of the ridges. Any errors made while taking maxillo-mandibular jaw relation records will result in dentures that are uncomfortable and, possibly, unwearable. The application of a tracing mechanism such as the Gothic arch tracer (a central bearing device) is a demonstrable method of determining centric relation. Intraoral Gothic arch tracers provide the advantage of capturing VDO and CR in an easy-to-use technique for practitioners. Intraoral tracing (Gothic arch tracing) is a preferred method of obtaining consistent positions of the mandible in motion (retrusive, protrusive and lateral) at a comfortable VDO.

  7. Marco Grippeling (1966-2014)

    CERN Multimedia

    2014-01-01

    It was with great sadness that we learnt that our former colleague and friend Marco Grippeling was amongst the victims of the Malaysia Airlines crash.   Marco, a Melbourne-based cyber security specialist, boarded flight MH17 on his way back to Australia after spending his last days with friends and family in his home country of the Netherlands. Marco joined CERN as a Technical Student in the PS Division in 1992.  In 1994 he moved to the LHC Division as a Staff Member, leaving for more exotic horizons in 2000. Marco will always be remembered for his enthusiasm and joie de vivre. Our deepest condolences go to his family and friends at this time. His former colleagues and friends at CERN

  8. Glossary to ARCH (GARCH)

    DEFF Research Database (Denmark)

    Bollerslev, Tim

    The literature on modeling and forecasting time-varying volatility is ripe with acronyms and abbreviations used to describe the many different parametric models that have been put forth since the original linear ARCH model introduced in the seminal Nobel Prize winning paper by Engle (1982......).  The present paper provides an easy-to-use encyclopedic reference guide to this long list of ARCH acronyms.  In addition to the acronyms associated with specific parametric models, I have also included descriptions of various abbreviations associated with more general statistical procedures and ideas...

  9. Glossary to ARCH (GARCH)

    DEFF Research Database (Denmark)

    Bollerslev, Tim

    The literature on modeling and forecasting time-varying volatility is ripe with acronyms and abbreviations used to describe the many different parametric models that have been put forth since the original linear ARCH model introduced in the seminal Nobel Prize winning paper by Engle (1982......).  The present paper provides an easy-to-use encyclopedic reference guide to this long list of ARCH acronyms.  In addition to the acronyms associated with specific parametric models, I have also included descriptions of various abbreviations associated with more general statistical procedures and ideas...

  10. Electrothermally Tunable Arch Resonator

    KAUST Repository

    Hajjaj, Amal Z.

    2017-03-18

    This paper demonstrates experimentally, theoretically, and numerically a wide-range tunability of electrothermally actuated microelectromechanical arch beams. The beams are made of silicon and are intentionally fabricated with some curvature as in-plane shallow arches. An electrothermal voltage is applied between the anchors of the beam generating a current that controls the axial stress caused by thermal expansion. When the electrothermal voltage increases, the compressive stress increases inside the arch beam. This leads to an increase in its curvature, thereby increasing its resonance frequencies. We show here that the first resonance frequency can increase monotonically up to twice its initial value. We show also that after some electrothermal voltage load, the third resonance frequency starts to become more sensitive to the axial thermal stress, while the first resonance frequency becomes less sensitive. These results can be used as guidelines to utilize arches as wide-range tunable resonators. Analytical results based on the nonlinear Euler Bernoulli beam theory are generated and compared with the experimental data and the results of a multi-physics finite-element model. A good agreement is found among all the results. [2016-0291

  11. Mixing properties of ARCH and time-varying ARCH processes

    CERN Document Server

    Fryzlewicz, Piotr; 10.3150/10-BEJ270

    2011-01-01

    There exist very few results on mixing for non-stationary processes. However, mixing is often required in statistical inference for non-stationary processes such as time-varying ARCH (tvARCH) models. In this paper, bounds for the mixing rates of a stochastic process are derived in terms of the conditional densities of the process. These bounds are used to obtain the $\\alpha$, 2-mixing and $\\beta$-mixing rates of the non-stationary time-varying $\\operatorname {ARCH}(p)$ process and $\\operatorname {ARCH}(\\infty)$ process. It is shown that the mixing rate of the time-varying $\\operatorname {ARCH}(p)$ process is geometric, whereas the bound on the mixing rate of the $\\operatorname {ARCH}(\\infty)$ process depends on the rate of decay of the $\\operatorname {ARCH}(\\infty)$ parameters. We note that the methodology given in this paper is applicable to other processes.

  12. The ARCHES Project

    Science.gov (United States)

    Motch, C.; Arches Consortium

    2015-09-01

    The Astronomical Resource Cross-matching for High Energy Studies (ARCHES) project is a FP7-Space funded programme started in 2013 and involving the Observatoire Astronomique de Strasbourg including the CDS (France), the Leibniz- Institut für Astrophysik Potsdam (Germany), the University of Leicester (UK), the Universidad de Cantabria (IFCA, Spain) and the Instituto Nacional de Tecnica Aeroespacial (Spain). ARCHES will provide the international astronomical community with well-characterised multi-wavelength data in the form of spectral energy distributions (SEDs) for large samples of objects extracted from the 3XMM X-ray catalogue of serendipitous sources. The project develops new tools implementing fully probabilistic simultaneous cross-correlation of several catalogues and a multi-wavelength finder for clusters of galaxies. SEDs are based on an enhanced version of the 3XMM catalogue and on a careful selection of the most relevant multi-wavelength archival catalogues. In order to ensure the largest audience, SEDs will be distributed to the international community through CDS services and through the Virtual Observatory. These enhanced resources are tested in the framework of several science cases. More information may be found at http://www.arches-fp7.eu/

  13. Castillo de San Marcos National Monument Tract and Boundary Data

    Data.gov (United States)

    National Park Service, Department of the Interior — These ESRI shape files are of National Park Service tract and boundary data that was created by the Land Resources Division. Tracts are numbered and created by the...

  14. The Road Inventory of San Marcos National Fish Hatchery

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — To determine the relative needs of the U.S. Fish and Wildlife Service, the Federal Highway Administration (FHWA) was asked to inventory all public access and...

  15. Double arch mirror study

    Science.gov (United States)

    Vukobratovich, D.; Hillman, D.

    1983-01-01

    The development of a method of mounting light weight glass mirrors for astronomical telescopes compatible with the goals of the Shuttle Infrared Telescope Facility (SIRTF) was investigated. A 20 in. diameter double arch lightweight mirror previously fabricated was modified to use a new mount configuration. This mount concept was developed and fabricated. The mounting concept of the double mounting mirror is outlined. The modifications made to the mirror, fabrication of the mirror mount, and room temperature testing of the mirror and mount and the extension of the mirror and mount concept to a full size (40 in. diameter) primary mirror for SIRTF are discussed.

  16. The ARCHES project

    CERN Document Server

    Motch, C; Genova, F; Esteban, F Jiménez-; López, M; Michel, L; Mingo, B; Mints, A; Gómez-Morán, A Nebot; Pineau, F -X; Rosen, S; Sanchez, E; Schwope, A; Solano, E; Watson, M

    2016-01-01

    ARCHES (Astronomical Resource Cross-matching for High Energy Studies) is a FP7-Space funded project whose aim is to provide the international astronomical community with well-characterised multi-wavelength data in the form of spectral energy distributions (SEDs) for large samples of objects extracted from the 3XMM DR5 X-ray catalogue of serendipitous sources. The project has developed new tools implementing fully probabilistic simultaneous cross-correlation of several catalogues for unresolved sources and a multi-wavelength finder for clusters of galaxies for extended sources. These enhanced resources have been tested in the framework of several science cases.

  17. Semi- and Nonparametric ARCH Processes

    Directory of Open Access Journals (Sweden)

    Oliver B. Linton

    2011-01-01

    Full Text Available ARCH/GARCH modelling has been successfully applied in empirical finance for many years. This paper surveys the semiparametric and nonparametric methods in univariate and multivariate ARCH/GARCH models. First, we introduce some specific semiparametric models and investigate the semiparametric and nonparametrics estimation techniques applied to: the error density, the functional form of the volatility function, the relationship between mean and variance, long memory processes, locally stationary processes, continuous time processes and multivariate models. The second part of the paper is about the general properties of such processes, including stationary conditions, ergodic conditions and mixing conditions. The last part is on the estimation methods in ARCH/GARCH processes.

  18. Using ArchE in the Classroom: One Experience

    Science.gov (United States)

    2007-09-01

    displaying the new itinerary The team initially adopted the Model-View-Controller ( MVC ) architecture as the top-level architecture . The...CMU/SEI-2007-TN-001 Software Architecture Technology Initiative Unlimited distribution subject to the copyright. This report was prepared...SOFTWARE ENGINEERING INSTITUTE | v vi | CMU/SEI-2007-TN-001 Abstract The Architecture Expert (ArchE) tool serves as a software architecture

  19. Theory of Arched Structures Strength, Stability, Vibration

    CERN Document Server

    Karnovsky, Igor A

    2012-01-01

    Theory of Arched Structures: Strength, Stability, Vibration presents detailed procedures for analytical analysis of the strength, stability, and vibration of arched structures of different types, using exact analytical methods of classical structural analysis. The material discussed is divided into four parts. Part I covers stress and strain with a particular emphasis on analysis; Part II discusses stability and gives an in-depth analysis of elastic stability of arches and the role that matrix methods play in the stability of the arches; Part III presents a comprehensive tutorial on dynamics and free vibration of arches, and forced vibration of arches; and Part IV offers a section on special topics which contains a unique discussion of plastic analysis of arches and the optimal design of arches.

  20. Arch bridges – unlocking their potential

    OpenAIRE

    Long, Adrian; Nanukuttan, Sreejith

    2016-01-01

    Arch bridges are strong, durable, aesthetically pleasing and require little maintenance but very few have been built since the early 1900s. However, this trend has changed as more than 60 FlexiArch bridges have been installed since the system was launched in 2007. The FlexiArch uses precast concrete voussoirs, requires neither corrodible reinforcement, nor centring, can be installed in hours and is contractor friendly. Details of this innovative method of construction and installation of arch...

  1. Relationship among Lower Arch Length, Arch Width and Arch Perimeter in Crowding and Non-Crowding Groups

    Directory of Open Access Journals (Sweden)

    Selmani Mimoza

    2015-03-01

    Full Text Available Crowding is one of the causes of class I malocclusion. The purpose of the present study was to examine the relationship between arch length, arch width and arch perimeter in crowded and non-crowded arches, as well as to made comparison of the right and left sides between them and to find out the contributing factor in lower arch crowding. The study groups consisted of 60 subjects aged 16 to 21 years. First group consisted of 30 pairs of dental study models with class I normal occlusion. The second group consisted of 30 pairs of study models with class I crowding. Measurements of arch length and width were made as defined by Lavelle and Foster, using Korkhaus callipers. Arch perimeter was measured by Lundstrom method’s using manual calliper with sharp points. Differences between these measurements were made by Mann-Whitney U test (Z/U.

  2. San Francisco District Laboratory (SAN)

    Data.gov (United States)

    Federal Laboratory Consortium — Program Capabilities Food Analysis SAN-DO Laboratory has an expert in elemental analysis who frequently performs field inspections of materials. A recently acquired...

  3. Comparison between different plantar arch

    OpenAIRE

    2009-01-01

    The longitudinal plantar arch (LPA) perform biomechanics functions in the foot. The aim of this study was to compare the relationship between different index to measure the LPA of the foot. The arc index, Staheli index, Viladot classification and Feiss line were compared. In the transversal study, the experimental samples were soccer players females with age between 13 to 19 years. The measure were performed by plantigraphy, with out Feiss line. Although non significant the higher agreement w...

  4. Competitividad y desarrollo empresarial de las pyme en el marco de la ley 1429 de 2010

    OpenAIRE

    Durán Rodríguez, Victoria

    2014-01-01

    Artículo de reflexión como (requisito para optar el título de Contador Público).-- Universidad de San Buenaventura, Facultad de Ciencias Administrativas y Contables, Programa de Contaduría Pública, 2014 Es de suma importancia, para el desarrollo económico de nuestro país, el análisis de impacto que han generado las medidas de formalización y generación del empleo, en el marco de la Ley 1429 de 2010; Este estudio identifica los elementos actuales que afectan la competitividad, los retos del...

  5. Revisiting impressions using dual-arch trays.

    Science.gov (United States)

    Small, Bruce W

    2012-01-01

    Making routine perfect impressions is the goal of any restorative dentist. Using dual-arch trays is an easy, repeatable way to accomplish that goal, as long as each step is done before the next and each step is performed perfectly. This column reviewed several articles that support the metal dual-arch concept and provided some clinical tips that might help restorative dentists. The dual-arch technique does have its limits and is meant for one or two teeth in a quadrant when there are other teeth to occlude with. Also, if the case involves anterior guidance, a full-arch impression maybe advisable.

  6. Marco Calamari, La scomparsa della rete

    Directory of Open Access Journals (Sweden)

    Maria Chiara Pievatolo

    2011-12-01

    Full Text Available Chi era in rete prima che fosse invasa dalle moltitudini – scrive Marco Calamari su “Punto Informatico” – temeva principalmente la sua occupazione “militare” da parte degli stati,  tramite una censura e un controllo capillare. Non è andata esattamente così. L’”economia del dono“, per la sua eccellenza tecnica, ha retto alla pressione delle masse e [...

  7. Marco Polo Dances Back to China

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    The national theater’s first dance drama premieres in late December The first original dance drama of China’s National Center for the Performing Arts (NCPA) Marco Polo will debut at the theater on December 22, a move to continue the tradition of launching excellent stage works to celebrate the theater’s anniversary.This December marks the theater’s third birthday.

  8. San Francisco District Laboratory (SAN)

    Data.gov (United States)

    Federal Laboratory Consortium — Program CapabilitiesFood Analysis SAN-DO Laboratory has an expert in elemental analysis who frequently performs field inspections of materials. A recently acquired...

  9. Tympanic ossicles and pharyngeal arches.

    Science.gov (United States)

    Whyte, J; Cisneros, A; Yus, C; Fraile, J; Obón, J; Vera, A

    2009-02-01

    We have performed a study on 11 human embryos regarding the development of the tympanic ossicles and their relationship with the first pharyngeal arch. After performing measurements to date the embryos and foetuses chronologically, we performed a meticulous dissection of the temporal bones. Subsequently, they were fixed in 10% formol, decalcified with 2% nitric acid, embedded in Paraplast, sectioned in 7-mm sequences and stained with Martin's trichrome technique. In the 21- and 24-mm cranium-raquis (CR) length human embryos, we have observed the head of the malleus and the body of the incus close to Meckel's cartilage, in addition to the handle of the malleus, the long limb of the incus and the stapes. Between them there was a mesenchymal band inside the primordium of the tympanic cavity. In the 27-mm CR embryo, the various components of the malleus and incus were fusing, and in the 30-mm CR embryo the union was complete. From our observations, we can conclude that the malleus and the incus are derived from the first and second pharyngeal arches.

  10. Occlusal stability in shortened dental arches.

    Science.gov (United States)

    Witter, D J; Creugers, N H; Kreulen, C M; de Haan, A F

    2001-02-01

    Shortened dental arches consisting of anterior and premolar teeth have been shown to meet oral functional demands. However, the occlusal stability may be at risk as a result of tooth migration. The aim of this nine-year study was to investigate occlusal stability in shortened dental arches as a function over time. Occlusal stability indicators were: 'interdental spacing', 'occlusal contacts of anterior teeth in Intercuspal Position', 'overbite', 'occlusal tooth wear', and 'alveolar bone support'. Subjects with shortened dental arches (n = 74) were compared with subjects with complete dental arches (controls, n = 72). Repeated-measurement regression analyses were applied to assess age-dependent variables in the controls and to relate the occlusal changes to the period of time since the treatment that led to the shortened dental arches. Compared with complete dental arches, shortened dental arches had similar overbite and occlusal tooth wear. They showed more interdental spacing in the premolar regions, more anterior teeth in occlusal contact, and lower alveolar bone scores. Since the differences remained constant over time, we conclude that shortened dental arches can provide long-term occlusal stability. Occlusal changes were self-limiting, indicating a new occlusal equilibrium.

  11. Persistent fifth arch anomalies - broadening the spectrum to include a variation of double aortic arch vascular ring

    Energy Technology Data Exchange (ETDEWEB)

    Newman, Beverley; Chan, Frandics [Stanford Children' s Hospital and Stanford University, Department of Radiology, Stanford, CA (United States); Hanneman, Kate [University of Toronto, Department of Medical Imaging, Toronto, ON (Canada)

    2016-12-15

    Fifth arch anomalies are rare and complex and frequently misdiagnosed or mistaken for other entities. We report a double arch vascular ring that is thought to consist of right fourth arch and left fifth arch components, a previously undescribed persistent fifth arch variant. The currently recognized spectrum and classification of fifth arch vascular anomalies are expanded along with illustrative images to justify the proposed changes. Reviewing and expanding the classification of fifth arch anomalies to include a double arch ring variant will promote recognition, correct diagnosis and appropriate management of these anomalies. (orig.)

  12. O maravilhoso no relato de Marco Polo

    OpenAIRE

    Márcia Regina Busanello

    2012-01-01

    A presente dissertação versa sobre a obra conhecida, na tradição italiana, por Il Milione, escrita em Gênova, em 1298, por Marco Polo e Rustichello da Pisa. Trata-se da famosa obra que compartilhou com o mundo os conhecimentos adquiridos pelo viajante veneziano em sua estada na corte de Kublai Khan, Grande Khan do Império Tártaro. No primeiro capítulo desse estudo são tratadas algumas questões estruturais da obra, tais como o narrador, a dupla autoria tema assumido como fundamental para os e...

  13. Nonlinear Dynamics of Electrostatically Actuated MEMS Arches

    KAUST Repository

    Al Hennawi, Qais M.

    2015-05-01

    In this thesis, we present theoretical and experimental investigation into the nonlinear statics and dynamics of clamped-clamped in-plane MEMS arches when excited by an electrostatic force. Theoretically, we first solve the equation of motion using a multi- mode Galarkin Reduced Order Model (ROM). We investigate the static response of the arch experimentally where we show several jumps due to the snap-through instability. Experimentally, a case study of in-plane silicon micromachined arch is studied and its mechanical behavior is measured using optical techniques. We develop an algorithm to extract various parameters that are needed to model the arch, such as the induced axial force, the modulus of elasticity, and the initially induced initial rise. After that, we excite the arch by a DC electrostatic force superimposed to an AC harmonic load. A softening spring behavior is observed when the excitation is close to the first resonance frequency due to the quadratic nonlinearity coming from the arch geometry and the electrostatic force. Also, a hardening spring behavior is observed when the excitation is close to the third (second symmetric) resonance frequency due to the cubic nonlinearity coming from mid-plane stretching. Then, we excite the arch by an electric load of two AC frequency components, where we report a combination resonance of the summed type. Agreement is reported among the theoretical and experimental work.

  14. San Marino.

    Science.gov (United States)

    1985-02-01

    San Marino, an independent republic located in north central Italy, in 1983 had a population of 22,206 growing at an annual rate of .9%. The literacy rate is 97% and the infant mortality rate is 9.6/1000. The terrain is mountainous and the climate is moderate. According to local tradition, San Marino was founded by a Christian stonecutter in the 4th century A.D. as a refuge against religious persecution. Its recorded history began in the 9th century, and it has survived assaults on its independence by the papacy, the Malatesta lords of Rimini, Cesare Borgia, Napoleon, and Mussolini. An 1862 treaty with the newly formed Kingdom of Italy has been periodically renewed and amended. The present government is an alliance between the socialists and communists. San Marino has had its own statutes and governmental institutions since the 11th century. Legislative authority at present is vested in a 60-member unicameral parliament. Executive authority is exercised by the 11-member Congress of State, the members of which head the various administrative departments of the goverment. The posts are divided among the parties which form the coalition government. Judicial authority is partly exercised by Italian magistrates in civil and criminal cases. San Marino's policies are tied to Italy's and political organizations and labor unions active in Italy are also active in San Marino. Since World War II, there has been intense rivalry between 2 political coalitions, the Popular Alliance composed of the Christian Democratic Party and the Independent Social Democratic Party, and the Liberty Committee, coalition of the Communist Party and the Socialist Party. San Marino's gross domestic product was $137 million and its per capita income was $6290 in 1980. The principal economic activities are farming and livestock raising, along with some light manufacturing. Foreign transactions are dominated by tourism. The government derives most of its revenue from the sale of postage stamps to

  15. In memory of Marcos Vidal (1974-2016

    Directory of Open Access Journals (Sweden)

    Ross Cagan

    2016-03-01

    Full Text Available With the untimely death of Marcos Vidal, we have lost a good friend and a creative, brilliant colleague who made important contributions to the field of cancer biology through fruit fly research. Marcos began his research into Drosophila at Ross Cagan's laboratory in 2003, first at Washington University in St Louis and later at Mount Sinai Hospital in New York. In 2009 Marcos was appointed as Research Group Leader at the Beatson Institute for Cancer Research in Glasgow.

  16. Mycotic Aneurysm of the Aortic Arch

    Directory of Open Access Journals (Sweden)

    Ji Hye Seo

    2014-08-01

    Full Text Available A mycotic aneurysm of the thoracic aorta is rare. We report a case of mycotic aneurysm that developed in the aortic arch. An 86-year-old man was admitted with fever and general weakness. Blood culture yielded methicillin-resistant Staphylococcus aureus. Chest X-ray showed an enlarged aortic arch, and computed tomography scan revealed an aneurysm in the aortic arch. The patient was treated only with antibiotics and not surgically. The size of the aneurysm increased rapidly, resulting in bronchial obstruction and superimposed pneumonia. The patient died of respiratory failure.

  17. In-Plane Elastic Buckling of Arch

    Institute of Scientific and Technical Information of China (English)

    剧锦三; 郭彦林

    2002-01-01

    The in-plane elastic buckling behavior of arches is investigated using a new finite-element approach for the nonlinear analysis. The linear buckling, nonlinear primary buckling, and secondary bifurcation buckling behavior of arches are compared taking into account the large deformation and the effects of initial geometric imperfections or perturbations. The theoretical investigation emphasizes the nonlinear secondary bifurcation buckling behavior for a full span uniformly distributed load. The efficiency of compact method for tracing secondary buckling path is shown through several examples. Finally, a new structural design, which prevents the secondary bifurcation buckling by adding some crossed cables across the arch, is proposed to improve the limit load carrying capacity.

  18. Determinant factors of Yemeni maxillary arch dimensions

    Directory of Open Access Journals (Sweden)

    Nabil Muhsen Al-Zubair

    2015-01-01

    Conclusion: Measurements of palatal depth and relationships of the canines to one another and to other teeth thus had the widest ranges, implying that these dimensions are the strongest determinants of maxillary arch size.

  19. Complete interruption of the aortic arch

    Energy Technology Data Exchange (ETDEWEB)

    Park, Sung Hak; Park, In Kyu; Lee, Won Hwa; Kim, Yong Joo; Kang, Duk Sik; Lee, Jong Tae [Kyungpook National University College of Medicine, Taegu (Korea, Republic of)

    1984-09-15

    Complete interrupture of the aortic arch is one of the least common cardiac malformation. In this condition, continuity between the ascending and descending protions of the aorta is not present, and the descending aorta is supplied through a reversing patent ductus arteriosus. In the majority of the patients a ventricular septal defect is present. Authors have experienced a case of the complete interruption of aortic arch, interruption between the left carotid and the left subclavian artery.

  20. Fractionally Integrated Models With ARCH Errors

    OpenAIRE

    Hauser, Michael A.; Kunst, Robert M.

    1993-01-01

    Abstract: We introduce ARFIMA-ARCH models which simultaneously incorporate fractional differencing and conditional heteroskedasticity. We develop the likelihood function and a numerical estimation procedure for this model class. Two ARCH models - Engle- and Weiss-type - are explicitly treated and stationarity conditions are derived. Finite-sample properties of the estimation procedure are explored by Monte Carlo simulation. An application to the Standard & Poor 500 Index indicates existence o...

  1. Highly Tunable Electrothermally Actuated Arch Resonator

    KAUST Repository

    Hajjaj, Amal Z.

    2016-12-05

    This paper demonstrates experimentally, theoretically, and numerically a wide-range tunability of electrothermally actuated MEMS arch beams. The beams are made of silicon and are intentionally fabricated with some curvature as in-plane shallow arches. Analytical results based on the Galerkin discretization of the Euler Bernoulli beam theory are generated and compared to the experimental data and results of a multi-physics finite-element model. A good agreement is found among all the results. The electrothermal voltage is applied between the anchors of the clamped-clamped MEMS arch beam, generating a current that passes through the MEMS arch beam and controls its axial stress caused by thermal expansion. When the electrothermal voltage increases, the compressive stress increases inside the arch beam. This leads to increase in its curvature, thereby increases the resonance frequencies of the structure. We show here that the first resonance frequency can increase up to twice its initial value. We show also that after some electro-thermal voltage load, the third resonance frequency starts to become more sensitive to the axial thermal stress, while the first resonance frequency becomes less sensitive. These results can be used as guidelines to utilize arches as wide-range tunable resonators.

  2. The growth of foot arches and influencing factors

    OpenAIRE

    Ferial Hadipoetro Idris

    2016-01-01

    Background Foot arches are important components for body sup- port. Foot arch deformity caused by growth abnormalities cause serious limitations in daily activities. Objectives To determine the patterns of foot arch growth, factors influencing foot arch growth, and the timing for intervention in er- rant growth patterns. Methods A cross-sectional study evaluated the foot arches of chil- dren aged 0-18 years according to age and sex. Subjects included had no evidence of...

  3. La historicidad de Marcos 7,31

    Directory of Open Access Journals (Sweden)

    Alberto González García

    2017-10-01

    Full Text Available Este trabajo pretende demostrar lo plausible de la ruta seguida por Jesús tal como se la describe en Marcos 7, 31, señalando que, históricamente, nada hay de imposible, o siquiera de extraño, en descender de las tierras altas del Líbano hacia la costa de Sidón, y desde allí marchar en dirección sur por la Via Maris, atravesando la llanura de Esdrelón hasta alcanzar Escitópolis, virando entonces hacia el norte, de vuelta al Gennesaret, siguiendo el curso del Jordán, evitando así el retraso resultante de atravesar las colinas de Galilea, contra lo afirmado por algunos autores.

  4. Right circumflex retro-oesophageal aortic arch with coarctation of a high-positioned right arch

    Energy Technology Data Exchange (ETDEWEB)

    Ahn, Kyung-Sik; Yong, Hwan Seok; Woo, Ok Hee; Kang, Eun-Young [Korea University Guro Hospital, Department of Radiology, Seoul (Korea); Lee, Joo-Won [Korea University Guro Hospital, Department of Paediatrics, Seoul (Korea)

    2007-06-15

    We present a rare case of right circumflex retro-oesophageal aortic arch with coarctation of a high-positioned right arch. A 7-month-old boy presented with a cardiac murmur. Cardiac situs was normal and there was no evidence of an intracardiac shunt or patent ductus arteriosus. MR aortography revealed a right aortic arch that was high-positioned, tortuous and narrowed. This right aortic arch crossed the midline behind the oesophagus and continued as a left-sided descending aorta. The left common carotid and subclavian arteries arose from a large branching vascular structure that derived from the top of the left-sided descending aorta. The right common carotid artery arose from the ascending aorta. The proximal portion of the right common carotid artery showed very severe stenosis and poststenotic dilatation. The right subclavian artery originated distal to the narrowed and tortuous segment of the aortic arch. (orig.)

  5. Arch Index: An Easier Approach for Arch Height (A Regression Analysis

    Directory of Open Access Journals (Sweden)

    Hironmoy Roy

    2012-04-01

    Full Text Available Background: Arch-height estimation though practiced usually in supine posture; is neither correct nor scientific as referred in literature, which favour for standing x-rays or arch-index as yardstick. In fact the standing x-rays can be excused for being troublesome in busy OPD, but an ink-footprint on simple graph-sheet can be documented, as it is easier, cheaper and requires almost no machineries and expertisation. Objective: So this study aimed to redefine the inter-relationship of the radiological standing arch-heights with the arch-index for correlation and regression so that from the later we can derive the radiographical standing arch-height values indirectly, avoiding the actual maneuver. Methods: The study involved 103 adult subjects attending at a tertiary care hospital of North Bengal. From the standing x-rays of foot, the standing navicular, talar heights were measured, and ‘normalised’ with the foot length. In parallel foot-prints also been obtained for arch-index. Finally variables analysed by SPSS software. Result: The arch-index showed significant negative correlations and simple linear regressions with standing navicular height, standing talar height as well as standing normalised navicular and talar heights analysed in both sexes separately with supporting mathematical equations. Conclusion: To measure the standing arch-height in a busy OPD, it is wise to have the foot-print first. Arch-index once get known, can be put in the equations as derived here, to predict the preferred standing arch-heights in either sex.

  6. Dental Arch Dimension of Malay Ethnic Group

    Directory of Open Access Journals (Sweden)

    H. A. Mohammad

    2011-01-01

    Full Text Available Problem statement: Many previous studies tried to define and put specific measurements for dental arches dimension in different ethnics groups. However, these studies may be specific to an ethnic group and cannot always be applied to other ethnic types. The aim of this study: is to obtain specific dental arch dimensions for Malaysian Malay ethnic groups and compare between both genders. Approach: Involved clinical examination, collection and analysis of 60 dental cast of Malaysian Malay subjects from pure ethnic group (30 males and 30 females, 20-24 years old. All dental landmarks were located and determined and subsequently measurements had been done according to specific points have been selected. Statistical analysis were done using t-test. Results: Dental arch dimension were established in normal occlusion for Malaysian Malay ethnic group in this study. No significant difference was observed in arch dimensions between male and female of Malaysian Malay. Conclusion: These measurement should be considered during treatment, especially in prosthodontics and orthodontics where arch dimension can be modified appreciably.

  7. Tubular Steel Arch Stabilized by Textile Membranes

    Directory of Open Access Journals (Sweden)

    Ondrej Svoboda

    2016-10-01

    Full Text Available Tubular steel arch supporting textile membrane roofing is investigated experimentally and numerically. The stabilization effects of the textile membrane on in-plane and out-of-plane behavior of the arch is of primary interest. First a model of a large membrane structure tested in laboratory is described. Prestressed membranes of PVC coated polyester fabric Ferrari® Précontraint 702S were used as a currently standard and excellent material. The test arrangement, loading and resulting load/deflection values are presented. The supporting structure consisted of two steel arch tubes, outer at edge of the membrane and inner supporting interior of the membrane roofing. The stability and strength behavior of the inner tube under both symmetrical and asymmetrical loading was monitored and is shown in some details. Second the SOFiSTiK software was employed to analyze the structural behavior in 3D, using geometrically nonlinear analysis with imperfections (GNIA. The numerical analysis, FE mesh sensitivity, the membrane prestressing and common boundary conditions are validated by test results. Finally a parametrical study concerning stability of mid arch with various geometries in a membrane structure with several supporting arches is presented, with recommendations for a practical design.

  8. Pantani di Marco Martinelli: una narrazione polifonica

    Directory of Open Access Journals (Sweden)

    Franco Nasi

    2014-05-01

    Full Text Available In questo articolo si analizza il testo drammaturgico Pantani di Marco Martinelli, una veglia epica teatrale di uno dei più noti eroi dello sport italiano degli ultimi anni. Il dramma rilegge anche la storia di Pantani e ricostruisce gli strani avvenimenti che portarono alla sospensione, alla estromissione del ciclista dal Giro d’Italia nel 1999, e in seguito alla sua profonda crisi psicologica e tragica morte in solitudine in un hotel, a soli 34 anni. Oltre alle modalità proprie della veglia rituale, il dramma utilizza anche i metodi del processo giudiziario, e offre testimonianze dettagliate che conducono a una riflessione critica sulla società italiana negli anni del potere politico di Berlusconi e della sua filosofia del consumismo. I tre diversi generi della retorica classica (epidittico, giudiziario e deliberativo si mescolano in questa complessa tessitura teatrale. Coniugando informazioni (processo e rito (veglia, Martinelli riesce a fondere la tragedia greca (forma mimetica e corale e il moderno teatro di narrazione (forma diegetica monologante. Combinando assieme scene intensamente drammatiche, ricordi di imprese sportive epiche, passaggi giocosi e parodici, e giustapponendo vari stili e registri (giornalistico, lirico, parodico, elegiaco, Martinelli crea momenti di forte “straniamento” e sorpresa, e rende particolarmente efficace il rito funebre, la ricostruzione storica della tragica vicenda di Pantani e la critica all’ideologia che ha dominato l’Italia negli anni di Berlusconi. 

  9. A unique variation of superficial palmar arch

    Directory of Open Access Journals (Sweden)

    Jiji PJ

    2009-09-01

    Full Text Available We present a unique variation in the arterial pattern of superficial palmar arch in which it was completed by one of the large terminal branches of radial artery. The origin of the arteria radialis indicis was also peculiar that it was arising from the communicating branch of the radial artery and further reinforced by the first dorsal metacarpal artery that joined it after reaching the volar aspect. Pertinent anatomical knowledge regarding the variations of the palmar arch is significant for the purposes of microvascular repairs and re-implantations.

  10. Kas doktorikooli lõpetajatest saavad doktorid? / Marco Kirm

    Index Scriptorium Estoniae

    Kirm, Marco, 1965-

    2008-01-01

    Materjaliteaduse ja materjalide tehnoloogia doktorikool on TÜ Füüsika-keemiateaduskonna ja Füüsika Instituudi juurde loodud institutsioon. Vastab Tartu Ülikooli Füüsika Instituudi teadusdirektor Marco Kirm

  11. The Marcos de Niza Experience: Teaching in a Community Setting.

    Science.gov (United States)

    Auerbach, Julieta Aviles

    1979-01-01

    The author reports on the multicultural, bilingual art program she created for elementary-age children at the Marcos de Niza community center in Phoenix, Arizona. This article is part of a theme issue on multicultural art education. (SJL)

  12. The Marcos de Niza Experience: Teaching in a Community Setting.

    Science.gov (United States)

    Auerbach, Julieta Aviles

    1979-01-01

    The author reports on the multicultural, bilingual art program she created for elementary-age children at the Marcos de Niza community center in Phoenix, Arizona. This article is part of a theme issue on multicultural art education. (SJL)

  13. Kas doktorikooli lõpetajatest saavad doktorid? / Marco Kirm

    Index Scriptorium Estoniae

    Kirm, Marco, 1965-

    2008-01-01

    Materjaliteaduse ja materjalide tehnoloogia doktorikool on TÜ Füüsika-keemiateaduskonna ja Füüsika Instituudi juurde loodud institutsioon. Vastab Tartu Ülikooli Füüsika Instituudi teadusdirektor Marco Kirm

  14. Contribution of the transverse arch to foot stiffness in humans

    OpenAIRE

    Yawar, Ali; Korpas, Lucia; Lugo-Bolanos, Maria; Mandre, Shreyas; Venkadesan, Madhusudhan

    2017-01-01

    Stiffness of the human foot is central to its mechanical function, such as elastic energy storage and propulsion. Its doubly-arched structure, manifested as longitudinal and transverse arches, is thought to underlie the stiff nature. However, previous studies have focused solely on the longitudinal arch, and little is known about whether and how the transverse arch impacts the foot's stiffness. The common observation that a flexible currency bill significantly stiffens upon curling it transve...

  15. Precast Pearl-Chain concrete arch bridges

    DEFF Research Database (Denmark)

    Halding, Philip Skov; Hertz, Kristian Dahl; Schmidt, Jacob Wittrup

    2015-01-01

    A Pearl-Chain Bridge is a closed-spandrel arch bridge consisting of a number of straight pre-fabricated so called Super-Light Deck elements put together in an arch shape by post-tensioning cables. Several Pearl-Chain arches can be positioned adjacent to each other by a crane to achieve a bridge...... the technology was used. We also study other important components and details in the Pearl-Chain Bridge concept and review the effects of different types of loads. A theoretical case study of a circular 30 m span Pearl-Chain Bridge is presented showing the influence of a number of parameters: The number of post-tensioning......, and gives a large positive bending moment below the load and a smaller negative bending moment in the unloaded side. When the Pearl-Chain Bridge concept is compared to other pre-fabricated arch bridge solutions we find a number of advantages when using Pearl-Chain Bridges: Straight elements, combination...

  16. Assembly and lifting of Pearl-Chain arches

    DEFF Research Database (Denmark)

    Halding, Philip Skov; Hertz, Kristian Dahl; Viebæk, N.E.

    2015-01-01

    Pearl-Chain arches were invented at the Technical University of Denmark in cooporation with the company Abeo A/S. The system uses specially designed, pre-fabricated concrete elements that are post-tensioned together into an arch shape, which is then lifted into place. The arches can be used both...

  17. Dilatation of the aneurysmal sac after total arch replacement.

    Science.gov (United States)

    Watanuki, Hirotaka; Ogino, Hitoshi; Matsuda, Hitoshi; Minatoya, Kenji; Sasaki, Hiroaki; Fukuda, Tetsuya; Kitamura, Soichiro

    2008-02-01

    In our institution, total arch replacement for distal arch aneurysms is performed through a median sternotomy with antegrade selective cerebral perfusion. The distal anastomosis to the completely transected descending aorta is made through the aneurysmal sac. We report on three interesting cases presenting late dilatation of the aneurysmal sac due to collateral flow after total arch replacement.

  18. Analysis of health services cost at the dental clinic of the San Marcos University.

    OpenAIRE

    Madrid Chumacero, Marco Tulio; Departamento Académico de Estomatología, Biosocial, Facultad de Odontología. Universidad Nacional Mayor de San Marcos, Lima, Perú.; Echeandía Arellano, Juana V.; Facultad de Medicina Humana. Universidad Nacional Mayor de San Marcos, Lima, Perú.

    2014-01-01

    The objectives of this study were: To establish the unitary services cost in Dentistry, To describe simplest way to determine the costs structure approximated for each dental service offered at the clinic. They it was compared with the welfare rates at the dental clinic of the UNMSM, the results were the following ones: 1. Diagnosis: in the four cost activities is higher compared with the official rates, demonstrating "minimum utilities" that goes up from 0,21 to s. 15.96. 2. Radiology: in th...

  19. DOE Zero Energy Ready Home Case Study: KB Homes, San Marcos, California

    Energy Technology Data Exchange (ETDEWEB)

    none,

    2013-09-01

    Designed to produce as much energy as it uses, the ZeroHouse incorporates a PV system, R-15 fiberglass batts in walls, and slab-on-grade foundation. The builder ranked fifth in the nation on Builder Magazine’s 2012 Top 100 ranking of U.S. home builders based on number of housing starts, and won a 2013 Housing Innovation Award in the production builder category.

  20. Diego de León Pinedo, universitario de Salamanca y de San Marcos de Lima

    Directory of Open Access Journals (Sweden)

    Águeda RODRÍGUEZ CRUZ

    2010-04-01

    Full Text Available RESUMEN: La Universidad de Salamanca fue el modelo institucional de las Universidades hispanoamericanas, apoyado en no pocas pruebas documentales1. La descubrimos presente a lo largo de la trayectoria histórica de estas universidades hijas, desde la primera piedra del trasplante del régimen universitario español al Nuevo Mundo, la Universidad de Santo Domingo, en la Isla Española, hasta la última del período hispánico, fundada por las Cortes de Cádiz en León de Nicaragua, en 1812. Desde su gestación y a lo largo de todo su desarrollo histórico no dejan de mirar a Salamanca, para inspirarse continuamente en ella. Al menos el ochenta y cinco por ciento de la legislación universitaria hispanoamericana, hunde sus raíces en el viejo tronco salmantino.

  1. Analysis of health services cost at the dental clinic of the San Marcos University.

    OpenAIRE

    Madrid Chumacero, Marco Tulio; Departamento Académico de Estomatología, Biosocial, Facultad de Odontología. Universidad Nacional Mayor de San Marcos, Lima, Perú.; Echeandía Arellano, Juana V.; Facultad de Medicina Humana. Universidad Nacional Mayor de San Marcos, Lima, Perú.

    2014-01-01

    The objectives of this study were: To establish the unitary services cost in Dentistry, To describe simplest way to determine the costs structure approximated for each dental service offered at the clinic. They it was compared with the welfare rates at the dental clinic of the UNMSM, the results were the following ones: 1. Diagnosis: in the four cost activities is higher compared with the official rates, demonstrating "minimum utilities" that goes up from 0,21 to s. 15.96. 2. Radiology: in th...

  2. SAN MARCOS Y LA CAPACITACIÓN A LAS PYMES EN EL SECTOR MANUFACTURERO DEL PERÚ

    OpenAIRE

    2014-01-01

    Este trabajo de investigación financiado por el Instituto de Investigación de Ciencias Financieras y Contables en el año 2002, fue presentado como "Situación y Perspectiva de las Pymes en el Sector Manufacturero del Perú". Esta investigación está orientada al sector PYMES manufacturero con la intención de recomendar el establecimiento de planes curriculares específicos en la Facultad de Ciencias Contables para preparar especialistas en sistemas de información cont...

  3. Castillo De San Marcos National Monument Data Landcover Product - NOAA C-CAP Source

    Data.gov (United States)

    National Park Service, Department of the Interior — NPScape CCAP landcover (CCAP_LAC - 1996, 2001 and 2006) and landcover change (CCAP_LCC) products. Landcover change is produced from the 1996-2001 NOAA C-CAP and...

  4. Comparison of overjet among 3 arch types in normal occlusion.

    Science.gov (United States)

    Kim, Byung-In; Bayome, Mohamed; Kim, Yoonji; Baek, Seung-Hak; Han, Seong Ho; Kim, Seong-Hun; Kook, Yoon-Ah

    2011-03-01

    The purposes of this study were to examine the amounts of overjet in the anterior and posterior segments of 3 arch forms by using facial axis points on 3-dimensional virtual models and to verify the minimum posterior extension required for classification of the arch form in normal occlusions. Facial axis points were digitized on 97 virtual models with normal occlusion, classified into 20 tapered, 25 ovoid, and 52 square arch forms. Intercanine and intermolar arch widths and depths were measured. The best-fitting curves were created, and overjet was measured at each facial axis point. Two-way analysis of variance (ANOVA) was performed to assess the relationship between arch form and overjet in different areas. The minimum posterior extension to determine arch type was analyzed with the chi-square test. Subjects with a tapered arch form had larger overjet compared with those with ovoid and square forms, except at the central incisor. A significant difference in overjet among different areas was found in subjects with a square arch form (P overjet according to arch types. The extension to the first premolar was sufficient to classify arch form type. It might be beneficial to consider more coordinated preformed superelastic archwires according to variations in overjet of different arch types. Copyright © 2011 American Association of Orthodontists. Published by Mosby, Inc. All rights reserved.

  5. Geometrical Nonlinearity Analysis of the Steel Network Arch Bridges

    Directory of Open Access Journals (Sweden)

    Sigutė Žilėnaitė

    2016-12-01

    Full Text Available Arch bridges are one of the popular, oldest and graceful bridges which are being built in zones of the city and out of the city. However arches becomes especially sensitive to their buckling response due to dominated compressive force in the arch. In order to ensure stability conditions of the individual arch and arch bridges, it is estimated not just geometrical factor of arch, residual stress, work conditions, geometric imperfections but geometrical nonlinearity too. Geometric nonlinearity especially dominates in many times static indeterminable systems such as network arch bridges. However there are a few represents of estimation of geometric nonlinearity of the new construction form of the arch bridges created in a middle of 20th century. This paper represents estimation of geometric nonlinearity with numerical method of the steel arch bridges with vertical hangers and network arch bridges. There are determined stress-strain law and principal behavior of the steel network arch bridges under symmetric and asymmetric pedestrian loadings.

  6. In-plane elastic stability of fixed parabolic shallow arches

    Institute of Scientific and Technical Information of China (English)

    CAI JianGuo; FENG Jian; CHEN Yao; HUANG LiFeng

    2009-01-01

    The nonlinear behavior of fixed parabolic shallow arches subjected to a vertical uniform load is inves-tigated to evaluate the in-plane buckling load. The virtual work principle method is used to establish the non-linear equilibrium and buckling equations. Analytical solutions for the non-linear in-plane sym-metric snap-through and antisymmetric bifurcation buckling loads are obtained. Based on the least square method, an approximation for the symmetric buckling load of fixed parabolic arch is proposedto simplify the solution process. And the relation between modified slenderness and buckling modes are discussed. Comparisons with the results of finite element analysis demonstrate that the solutions are accurate. A cable-arch structure is presented to improve the in-plane stability of parabolic arches. The comparison of buckling loads between cable-arch systems and arches only show that the effect of cables becomes more evident with the increase of arch's modified slenderness.

  7. Evolution Characteristic Analysis of Pressure-arch of a Double-arch Tunnel in Water-rich Strata

    Directory of Open Access Journals (Sweden)

    C. L. Li

    2016-03-01

    Full Text Available It is of importance to analyze the morphological characterization, the evolution process and the skewed effect of pressure-arch of a double-arch tunnel in the water-rich strata. Taking a buried depth 80 m double-arch tunnel as an example, a computational model of the double-arch tunnel was built by using FLAC3D technique. Then considering some aspects including groundwater conditions, tunnel depth, construction sequences and permeability coefficients, the coupling effect of stress field and seepage field in the pressure-arch of the double-arch tunnel was analyzed. The results show that the thickness of the pressure-arch induced by step-by-step excavation and display a step-descent skewed distribution from the left to the right of the double-arch tunnel. The permeability coefficient has a significant influence on the shape and the skewed effect of the pressure arch. The excavation of the bench method has a better arching condition than that of the expanding method. The abtained results provide a basic reference for the rock reinforcement design and safety construction of double-arch tunnels in the water-rich strata.

  8. Multislice CT angiography of interrupted aortic arch

    Energy Technology Data Exchange (ETDEWEB)

    Yang, Dong Hyun; Goo, Hyun Woo [Asan Medical Center, Department of Radiology and Research Institute of Radiology, Seoul (Korea); Seo, Dong-Man; Yun, Tae-Jin; Park, Jeong-Jun [Asan Medical Center, University of Ulsan College of Medicine, Department of Paediatric Cardiac Surgery, Seoul (Korea); Park, In-Sook; Ko, Jae Kon; Kim, Young Hwee [Asan Medical Center, University of Ulsan College of Medicine, Department of Paediatric Cardiology, Seoul (Korea)

    2008-01-15

    Interrupted aortic arch (IAA) is defined as complete luminal and anatomic discontinuity between the ascending and descending aorta. Because almost all patients with IAA become critically ill during the neonatal period, they should undergo urgent corrective surgery. This clinical urgency necessitates a fast and accurate noninvasive diagnostic method. Although echocardiography remains the primary imaging tool for this purpose, it is not always sufficient for planning surgical correction of IAA, principally due to a limited acoustic window and the inexperience of imagers. In this context, multislice CT angiography is regarded as an appropriate imaging technique complementary to echocardiography because it is fast, accurate, and objective for the diagnosis of IAA. In this article we describe what cardiac radiologists should know about IAA in their clinical practice, including clinicopathological features, CT features with contemporary surgical methods and postoperative complications, and differentiation from coarctation of the aorta and aortic arch atresia. (orig.)

  9. Recurrent Pneumonia due to Double Aortic Arch

    Directory of Open Access Journals (Sweden)

    I. Sedighi

    2012-04-01

    Full Text Available Introduction: Pneumonia is one of the most common infections during childhood. In children with recurrent bacterial pneumonia complete evaluation for underlying factors is necessary. The most common underlying diseases include: antibody deficiencies , cystic fibrosis , tracheoesophageal fistula and increased pulmonary blood flow. Vascular ring and its pressure effect is a less common cause of stridor and recurrent pneumonia. Congenital abnormalities in aortic arch and main branches which form vascular ring around esophagus and trachea with variable pressure effect cause respiratory symptoms such as stridor , wheezing and recurrent pneumoniaCase Report: A 2 year old boy was admitted in our hospital with respiratory distress and cough . Chest x-Ray demonstrated right lobar pneumonia. He had history of stridor and wheezing from neonatal period and hospitalization due to pneumonia for four times. The patient received appropriate antibiotics. Despite fever and respiratory distress improvement, wheezing continued. Review of his medical documents showed fixed pressure effect on posterior aspect of esophagus in barium swallow. In CT angiography we confirmed double aortic arch.Conclusion: Double aortic arch is one of the causes of persistant respiratory symptom and recurrent pneumonia in children for which fluoroscopic barium swallow is the first non-invasive diagnostic method.(Sci J Hamadan Univ Med Sci 2012;19(1:70-74

  10. 77 FR 54811 - Safety Zone; TriRock San Diego, San Diego Bay, San Diego, CA

    Science.gov (United States)

    2012-09-06

    ... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Safety Zone; TriRock San Diego, San Diego Bay, San Diego... safety zone upon the navigable waters of the San Diego Bay, San Diego, CA, in support of a bay swim in San Diego Harbor. This safety zone is necessary to provide for the safety of the participants, crew...

  11. 78 FR 58878 - Safety Zone; San Diego Shark Fest Swim; San Diego Bay, San Diego, CA

    Science.gov (United States)

    2013-09-25

    ... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Safety Zone; San Diego Shark Fest Swim; San Diego Bay, San Diego, CA AGENCY: Coast Guard, DHS. ACTION: Temporary final rule. SUMMARY: The Coast Guard is establishing a safety zone upon the navigable waters of the San Diego Bay, San Diego, CA, in support of San...

  12. 78 FR 53243 - Safety Zone; TriRock San Diego, San Diego Bay, San Diego, CA

    Science.gov (United States)

    2013-08-29

    ... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Safety Zone; TriRock San Diego, San Diego Bay, San Diego... temporary safety zone upon the navigable waters of the San Diego Bay, San Diego, CA, in support of a... Bryan Gollogly, Waterways Management, U.S. Coast Guard Sector San Diego; telephone (619) 278-7656, email...

  13. Accuracy of impressions obtained with dual-arch trays.

    Science.gov (United States)

    Wöstmann, Bernd; Rehmann, Peter; Balkenhol, Markus

    2009-01-01

    This study aimed to analyze the accuracy resulting from dual-arch impressions when compared to conventional impressions in complex preparations (ie, inlay and partial crown). One hundred eighty impressions were made using two different dual-arch trays; conventional trays served as the control. The accuracy of the dies obtained (Fuji-Rock EP, GC Europe) was assessed indirectly from the change of 59 transversal dimensions. Statistical analysis (t test, analysis of variance) revealed that less rigid dual-arch trays performed better than rigid ones. Though the inlay preparation was more difficult to reproduce with dual-arch trays, it can be concluded that the accuracy obtainable with nonrigid dual-arch trays is comparable to impressions taken from full-arch trays.

  14. Asymptotics of the QMLE for General ARCH(q) Models

    DEFF Research Database (Denmark)

    Kristensen, Dennis; Rahbek, Anders Christian

    2009-01-01

    Asymptotics of the QMLE for Non-Linear ARCH Models Dennis Kristensen, Columbia University Anders Rahbek, University of Copenhagen Abstract Asymptotic properties of the quasi-maximum likelihood estimator (QMLE) for non-linear ARCH(q) models -- including for example Asymmetric Power ARCH and log......-ARCH -- are derived. Strong consistency is established under the assumptions that the ARCH process is geometrically ergodic, the conditional variance function has a finite log-moment, and finite second moment of the rescaled error. Asymptotic normality of the estimator is established under the additional assumption...... that certain ratios involving the conditional variance function are suitably bounded, and that the rescaled errors have little more than fourth moment. We verify our general conditions, including identification, for a wide range of leading specific ARCH models....

  15. In-plane elastic stability of fixed parabolic shallow arches

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    The nonlinear behavior of fixed parabolic shallow arches subjected to a vertical uniform load is inves- tigated to evaluate the in-plane buckling load. The virtual work principle method is used to establish the non-linear equilibrium and buckling equations. Analytical solutions for the non-linear in-plane sym- metric snap-through and antisymmetric bifurcation buckling loads are obtained. Based on the least square method, an approximation for the symmetric buckling load of fixed parabolic arch is proposed to simplify the solution process. And the relation between modified slenderness and buckling modes are discussed. Comparisons with the results of finite element analysis demonstrate that the solutions are accurate. A cable-arch structure is presented to improve the in-plane stability of parabolic arches. The comparison of buckling loads between cable-arch systems and arches only show that the effect of cables becomes more evident with the increase of arch’s modified slenderness.

  16. Aortic arch blunt injury in front-seat passenger.

    Science.gov (United States)

    Türkmen, Nursel; Eren, Bülent; Aydin, Şule Akköse

    2013-10-01

    Aortic arch blunt injury has highly lethal nature. Because the physical examination findings are subtle, immediate medical evaluation is very important. The case was a 72-year-old woman. Massive haemorrhage in the left haemotorax, contusion area in the left lung and a traumatic transection of the distal aortic arch was observed during autopsy. We described intersting autopsy case of aortic arch blunt injury.

  17. Critical thrombotic obstruction of transverse aortic arch in a neonate

    Directory of Open Access Journals (Sweden)

    Karunakar Vadlamudi

    2015-01-01

    Full Text Available A 3-day-old neonate presented with features suggestive of coarctation of aorta. Echocardiography showed a large organized thrombus in the transverse arch causing obstruction to theaortic arch and carotids with partial recanalization. Patient underwent surgical thromboendarterectomy with arch reconstruction. The evaluation did not reveal any hematological abnormalities and suspected to be due to fetal thromboembolism. Patient improved well, and no neurological deficits were observed during follow-up.

  18. La lectura hipermedial. Hacia un marco teórico

    National Research Council Canada - National Science Library

    Zamora Suárez, Liliana

    2016-01-01

    El objetivo de este trabajo es establecer el marco teórico hacia un aprendizaje significativo durante la lectura hipermedial teniendo en cuenta los procesos cognitivos que se ponen en marcha en el transcurso de la práctica lectora...

  19. The Philippine Press after Marcos: Restored Freedoms and New Problems.

    Science.gov (United States)

    Guimary, Donald L.

    With the overthrow of Ferdinand Marcos from his 20-year rule of the Philippines, the news media regained its freedom and its voice, and now faces a new set of problems: low circulation, questionable ethical standards of reporters and their lack of experience, and ominous indications from the Corazon Aquino government that the administration might…

  20. Marco Polo Parkside,Beijing Opens New Japanese Restaurant

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    Marco Polo Parkside, Beijing opened a new Japanese Restaurant, Matsuko, on January 28,2010. A traditional Japanese sake ceremony was held at the opening ceremony. Hotel General Manager Henk Meyknecht and Zhan Weiguo, CEO of Matsuko, opened the sake barrel and shared the sake with

  1. An Electrostatically Actuated MEMS Arch Band-Pass Filter

    Directory of Open Access Journals (Sweden)

    Hassen M. Ouakad

    2013-01-01

    Full Text Available This work presents an investigation of the dynamics of micromachined arches resonators and their potential to be utilized as band-pass filters. The arches are actuated by a DC electrostatic load superimposed to an AC harmonic load. The dynamic response of the arch is studied analytically using a Galerkin-based reduced-order model when excited near its fundamental and third natural frequencies. Several simulation results are presented demonstrating interesting jumps and snap-through behavior of the arches and their attractive features for uses as band-pass filters, such as their sharp roll-off from pass bands to stop bands and their flat response.

  2. Right aortic arch with coarctation in Chinese children

    Energy Technology Data Exchange (ETDEWEB)

    Ming, Zhu; Aimin, Sun [Shanghai Children' s Medical Center, Department of Radiology, Shanghai (China)

    2008-05-15

    Because of the rarity of right aortic arch coarctation there are few reports of large groups of patients. To characterize the frequency and type of right aortic arch coarctation in a large group of pediatric patients. From June 1997 through May 2007, 11,276 consecutive children with congenital heart disease underwent multidetector CT (MDCT), MRI or angiocardiography examination. All children with a right aortic arch or coarctation were reviewed. Right aortic arch coarctation was found in 11 children representing 0.1% of the total group of 11,276 children, 1.7% of 658 children with native coarctations and 2.3% of 473 children with a right aortic arch. Among the 11 patients, 6 had long-segment narrowing and 7 had an aberrant left subclavian artery. MDCT, MRI and angiocardiography are reliable imaging techniques for the diagnosis of right aortic arch and coarctation. Our findings showed that the pattern of right aortic arch coarctation was different from that of left aortic arch coarctation, suggesting that they are different etiological entities. The pivotal role possibly played by flow dynamics in the development of right aortic arch coarctation is discussed. (orig.)

  3. Mathematical model of a moment-less arch.

    Science.gov (United States)

    Lewis, W J

    2016-06-01

    This paper presents a mathematical model for predicting the geometrical shapes of rigid, two-pin, moment-less arches of constant cross section. The advancement of this work lies in the inclusion of arch self-weight and the ability to produce moment-less arch forms for any span/rise ratio, and any ratio of uniformly distributed load per unit span, w, to uniformly distributed arch weight per unit arch length, q. The model is used to derive the shapes of two classical 'moment-less' arch forms: parabolic and catenary, prior to demonstrating a general case, not restricted by the unrealistic load assumptions (absence of q, in the case of a parabolic form, or no w, in the case of a catenary arch). Using the same value of span/rise ratio, and w/q>1, the behaviour of the moment-less and parabolic arches under permanent loading, (w+q), is analysed. Results show the former to be developing much lower stresses than its parabolic rival, even when there are relatively small differences in the two geometries; for a medium span/rise ratio of 4 and w/q=2, differences in the parabolic and moment-less arch geometries would, in practical terms, be viewed as insignificant, but the stresses in them are different.

  4. [Single coronary artery and right aortic arch].

    Science.gov (United States)

    Martínez-Quintana, Efrén; Rodríguez-González, Fayna

    2015-01-01

    Coronary anomalies are mostly asymptomatic and diagnosed incidentally during coronary angiography or echocardiography. However, they must be taken into account in the differential diagnosis of angina, dyspnea, syncope, acute myocardial infarction or sudden death in young patients. The case is presented of two rare anomalies, single coronary artery originating from right sinus of Valsalva and right aortic arch, in a 65 year-old patient with atherosclerotic coronary artery disease treated percutaneously. Copyright © 2014 Sociedad Española de Arteriosclerosis. Published by Elsevier España. All rights reserved.

  5. A Functional Version of the ARCH Model

    CERN Document Server

    Hormann, Siegfried; Reeder, Ron

    2011-01-01

    Improvements in data acquisition and processing techniques have lead to an almost continuous flow of information for financial data. High resolution tick data are available and can be quite conveniently described by a continuous time process. It is therefore natural to ask for possible extensions of financial time series models to a functional setup. In this paper we propose a functional version of the popular ARCH model. We will establish conditions for the existence of a strictly stationary solution, derive weak dependence and moment conditions, show consistency of the estimators and perform a small empirical study demonstrating how our model matches with real data.

  6. A Binomial Integer-Valued ARCH Model.

    Science.gov (United States)

    Ristić, Miroslav M; Weiß, Christian H; Janjić, Ana D

    2016-11-01

    We present an integer-valued ARCH model which can be used for modeling time series of counts with under-, equi-, or overdispersion. The introduced model has a conditional binomial distribution, and it is shown to be strictly stationary and ergodic. The unknown parameters are estimated by three methods: conditional maximum likelihood, conditional least squares and maximum likelihood type penalty function estimation. The asymptotic distributions of the estimators are derived. A real application of the novel model to epidemic surveillance is briefly discussed. Finally, a generalization of the introduced model is considered by introducing an integer-valued GARCH model.

  7. Three-dimensional measurement of foot arch in preschool children

    Directory of Open Access Journals (Sweden)

    Chang Hsun-Wen

    2012-09-01

    Full Text Available Abstract Background The prevalence of flexible flatfoot is high among preschool-aged children, but the effects of treatment are inconclusive due to the unclear definitions of normal flatfoot. To date, a universally accepted evaluation method of the foot arch in children has not been completely established. Our aims of this study were to establish a new method to evaluate the foot arch from a three dimensional perspective and to investigate the flexibility of the foot arch among children aged from two to six. Methods A total of 44 children aged from two to six years of age were put into five age groups in this study. The navicular height was measured with one leg standing, and both feet were scanned separately in both sitting and one leg standing positions to compute the foot arch volume. The arch volume index, which represents the ratio of the difference in volume between sitting and one leg standing positions to the volume when sitting was calculated to demonstrate the flexibility of the foot arch. The differences of measured parameters between each aged group were analyzed by one-way ANOVA. Results The arch volumes when sitting and standing were highly correlated with the navicular height. The navicular height ranged from 15.75 to 27 mm, the arch volume when sitting ranged from 6,223 to 11,630 mm3, and the arch volume when standing from 3,111 to 7,848 mm3 from two to six years of age. The arch volume index showed a declining trend as age increased. Conclusion This study is the first to describe the foot arch with volume perspective in preschool-aged children. The foot arch volume was highly correlated with the navicular height. Research results show both navicular height index and arch volume index gradually increase with age from two to six. At the same time the arch also becomes rigid with age from two to six. These results could be applied for clinical evaluation of the foot arch and post-treatment evaluation.

  8. Isolated right aortic arch: Antenatal evaluation

    Directory of Open Access Journals (Sweden)

    Ali Babacan

    2015-06-01

    Full Text Available Aortic arch abnormalities are the least frequently prenatally diagnosed congenital cardiac abnormalities. Right aortic arch (RAA identified in prenatal period is associated frequently with other cardiac/non-cardiac malformations, notably tracheal or esophageal compression and microdeletions 22q11. Intrauterine and postnatal survey of the fetus depends on these anomalies and their effects. Aortic arc variations, particularly RAA, can be diagnosed accurately by fetal echocardiography. Elaborated fetal cardiac and extracardiac evaluation should be undertaken in all cases of RAA by using Doppler ultrasound. Also cytogenetic testing for 22q11 microdeletions should be considered carefully. Nonetheless, it should be kept in mind that isolated RAA has a good prognosis, and in the majority of the patients, it is an asymptomatic vascular variant with a relatively low risk for chromosomal anomaly. In this paper with this case, we aim to evaluate the prenatal findings, associated conditions and prognosis of prenatally detected RAA anomalies in the light of literatures. J Clin Exp Invest 2015; 6 (2: 192-195

  9. Blood flow characteristics in the aortic arch

    Science.gov (United States)

    Prahl Wittberg, Lisa; van Wyk, Stevin; Mihaiescu, Mihai; Fuchs, Laszlo; Gutmark, Ephraim; Backeljauw, Philippe; Gutmark-Little, Iris

    2012-11-01

    The purpose with this study is to investigate the flow characteristics of blood in the aortic arch. Cardiovascular diseases are associated with specific locations in the arterial tree. Considering atherogenesis, it is claimed that the Wall Shear Stress (WSS) along with its temporal and spatial gradients play an important role in the development of the disease. The WSS is determined by the local flow characteristics, that in turn depends on the geometry as well as the rheological properties of blood. In this numerical work, the time dependent fluid flow during the entire cardiac cycle is fully resolved. The Quemada model is applied to account for the non-Newtonian properties of blood, an empirical model valid for different Red Blood Cell loading. Data obtained through Cardiac Magnetic Resonance Imaging have been used in order to reconstruct geometries of the the aortic arch. Here, three different geometries are studied out of which two display malformations that can be found in patients having the genetic disorder Turner's syndrome. The simulations show a highly complex flow with regions of secondary flow that is enhanced for the diseased aortas. The financial support from the Swedish Research Council (VR) and the Sweden-America Foundation is gratefully acknowledged.

  10. Level-ARCH Short Rate Models with Regime Switching

    DEFF Research Database (Denmark)

    Christiansen, Charlotte

    This paper introduces regime switching volatility into level- ARCH models for the short rates of the US, the UK, and Germany. Once regime switching and level effects are included there are no gains from including ARCH effects. It is of secondary importance exactly how the regime switching...

  11. Defect in Posterior Arch of Atlas in Myelomeningocele

    NARCIS (Netherlands)

    G. Blaauw (Gerhard)

    1971-01-01

    textabstractThe posterior arches of the cervical vertebrae of 30 children who died with a myelomeningocele in the lower thoracic, lumbar or sacral region were examined; in 70 per cent of these cases a defect was found in the posterior arch of the atlas, which was bridged by a firm fibrous band. Alté

  12. Modelling subset multivariate ARCH model via the AIC principle

    Institute of Scientific and Technical Information of China (English)

    2002-01-01

    In this paper we consider the problem of identifying a parsimonious subset multivariate ARCH model based on the AIC principle. The proposed approach can reduce the number of parameters in the final ARCH specification and allows for non-constant correlations between the components. Some simulation results illustrate the viability of the proposed procedure.

  13. Defect in Posterior Arch of Atlas in Myelomeningocele

    NARCIS (Netherlands)

    G. Blaauw (Gerhard)

    1971-01-01

    textabstractThe posterior arches of the cervical vertebrae of 30 children who died with a myelomeningocele in the lower thoracic, lumbar or sacral region were examined; in 70 per cent of these cases a defect was found in the posterior arch of the atlas, which was bridged by a firm fibrous band. Alté

  14. Double aortic arch and nasogastric tubes: A fatal combination

    Institute of Scientific and Technical Information of China (English)

    Julia Massaad; Kelly Crawford

    2008-01-01

    Double aortic arch is a common form of complete vascular ring that encircles both the trachea and the esophagus, and presents with various respiratory and esophageal symptoms, usually in the pediatric population.We present a case of double aortic arch in an adult patient that manifested as massive upper gastrointestinal bleeding after prolonged nasogastric intubation.

  15. Adult presentation with vascular ring due to double aortic arch.

    Science.gov (United States)

    Kafka, Henryk; Uebing, Anselm; Mohiaddin, Raad

    2006-11-01

    This is a case report on the use of cardiovascular magnetic resonance imaging to diagnose vascular ring due to double aortic arch in an adult presenting with an abnormal chest X-ray. The experience in this case and the literature review identify the benefits of using cardiovascular magnetic resonance imaging to clarify complex aortic arch anatomy.

  16. Twin - Arch technique. Revival of the "edgewise -Technique"?

    Directory of Open Access Journals (Sweden)

    Jacob Karp

    2012-01-01

    The SNB – Bracket brings a new dimension into the orthodontic world which is most apparent in extraction cases. Its Teflon – like material has a very low friction coefficient thus, reducing the treatment time considerably. Through the use of low dimensioned arch wires, the Twin – Arch Technique becomes a Light – wire system and simultaneously provides good anchorage and torque control.

  17. Full-scale load tests of Pearl-Chain arches

    DEFF Research Database (Denmark)

    Halding, Philip Skov; Hertz, Kristian Dahl; Schmidt, Jacob Wittrup

    2017-01-01

    , pre-fabricated, composite, lightweight, concrete deck elements (SL-Decks), that are post-tensioned together into an arch shape. The two Pearl-Chain arches, each with a span of 13m and a rise of 1m, were placed on a post tensioned bearing plate prepared in advance. The aches are tested with load...

  18. Estrategias que favorecen u obstaculizan el desarrollo local en el marco de la globalización

    Directory of Open Access Journals (Sweden)

    José Alejandro Vargas-Castro

    2008-01-01

    Full Text Available En este artículo se analizan las estrategias emprendidas desde los ámbitos locales en el marco de la globalización y se destaca cómo, si bien algunas de ellas favorecen su posicionamiento, otras lo obstaculizan. Se presentan tres casos de estudio en el Estado de México: San Mateo Atenco, Valle de Bravo y Villa Guerrero. Se logró identificar ciertas capacidades de los actores sociales que permiten recurrir a estrategias de concertación que favorecen el desarrollo local; sin embargo, ahí donde se carece de ellas el desarrollo se obstaculiza. El análisis de estas capacidades se hace a partir de tres variables independientes: capacidad organizacional, capacidad instrumental y capacidad sistémica. Se pretende demostrar cómo el desarrollo local depende de estas variables en los ámbitos internacional, nacional y local, en un contexto globalizado.

  19. Seismic multi-arch structures in East China

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    In previous papers (Wencai, 2002, 2003), the author has analyzed the deep seismic reflection profiles along some of the Mesozoic plutons in East China, and has pointed out that the crustal structures around these intrusions usually correlate with a special seismic fabric called the seismic multi-arch structure. This paper will continue to show main characteristics of the seismic multi-arch structures and discuss their relationship with mantle-origin magmatism and the lithospheric thinning process. Calibration of seismic reflectors in Chinese continental drilling sites shows that small-scale arch-like reflectors can be generated by fractured eclogites or other plutons, they do not belong to the multi-arch structure specially discussed in the paper. The multi-arch structure is characterized by several arch-like reflectors distributed in both the upper and lower crust with granitoid plutons or stocks exposed on the surface, which do not have obvious negative Europium anomalies. Based on the distribution pattern of arch reflectors, the multi-arch magmatic structures can be divided into three main types, namely the simple vertical combination type, the spread arch magmatic structure and the arch-bouquet structure. All of them correlate to mantle-origin magmatism, but occur in different places. The spread arch magmatic structures occur within a Mesozoic/Cenozoic rift zone with very thin and hot lithosphere. The vertical combination type of the multi-arch structures occurred near the rift zones where lithosphere was thin and hot. The arch-bouquet magmatic structures occur far from the rift zones where the lithosphere is not hot. The continental rifting acted as the late episode of the lithospheric thinning process seeing that the rift zones usually coincide with the thinnest parts of the lithosphere in East China. In different locations within the lithospheric thinning areas, mantle-origin magmatic activities have different characteristics, which might generate different

  20. Left testicular artery arching over the ipsilateral renal vein

    Institute of Scientific and Technical Information of China (English)

    Munekazu Naito; Hayato Terayama; Yoichi Nakamura; Shogo Hayashi; Takayoshi Miyaki; Masahiro Itoh

    2006-01-01

    Aim: To report two cases of the left testicular artery arching over the left renal vein (LRV) before running downward to the testis. Methods: The subjects were obtained from two Japanese cadavers. During the student course of gross-anatomical dissection, the anatomical relationship between the testicular vessels and the renal vein was specifically observed. Results: The arching left testicular artery arose from the aorta below the LRV and made a loop around the LRV, which appeared to be mildly compressed between the arching artery and the psoas major muscle.Conclusion: Clinically, compression of the LRV between the abdominal aorta and the superior mesenteric artery occasionally induces LRV hypertension, resulting in varicocele, orthostatic protenuria and hematuria. Considering that the incidence of a left arching testicular artery is higher than that of a right one, an arching left artery could be an additional cause of LRV hypertension.

  1. Atlantoaxial stabilization using multiaxial C-1 posterior arch screws.

    Science.gov (United States)

    Donnellan, Michael B; Sergides, Ioannis G; Sears, William R

    2008-12-01

    The authors present a novel technique of atlantoaxial fixation using multiaxial C-1 posterior arch screws. The technique involves the insertion of bilateral multiaxial C-1 posterior arch screws, which are connected by crosslinked rods to bilateral multiaxial C-2 pars screws. The clinical results are presented in 3 patients in whom anomalies of the vertebral arteries, C-1 lateral masses, and/or posterior arch of C-1 presented difficulty using existing fixation techniques with transarticular screws, C-1 lateral mass screws, or posterior wiring. The C-1 posterior arch screws achieved solid fixation and their insertion appeared to be technically less demanding than that of transarticular or C-1 lateral mass screws. This technique may reduce the risk of complications compared with existing techniques, especially in patients with anatomical variants of the vertebral artery, C-1 lateral masses, or C-1 posterior arch. This technique may prove to be an attractive fixation option in patients with normal anatomy.

  2. Effect of Obesity on Arch Index in Young Adults

    Directory of Open Access Journals (Sweden)

    Sneha Sameer Ganu

    2013-01-01

    Full Text Available Background: Excessive increases in weight bearing forces caused by obesity may negatively affect the lower limbs and feet but minimal research has examined the long-term loading effects of obesity on the musculoskeletal system, particularly in reference to the feet. Objectives: The purpose of the study was to investigate the effect of obesity on medial longitudinal arch of foot in young adults. Method: 60 subjects, 30 obese & 30 non obese were assessed for height & weight using standard technique. Radiographic images under static condition were used for calculating the arch index. Result: The arch index of obese subjects was significantly lower than the non obese subjects & there is a negative correlation between the BMI & the arch index. Conclusion: These results suggests that obesity lowers the medial longitudinal arch of foot.

  3. La docencia en el marco de la responsabilidad social universitaria

    Directory of Open Access Journals (Sweden)

    Luis José Vera Guadrón

    2012-01-01

    Full Text Available El presente artículo tiene como objetivo analizar la docencia en el marco de la responsabilidad social universitaria del profesor en el Programa Educación de la Universidad Nacional Experimental Rafael María Baralt. El tipo de investigación fue descriptiva, con diseño no experimental, de campo y transeccional; los resultados indicaron que los profesores cumplen con la docencia en el marco de la responsabilidad social universitaria. Se concluye que existe conocimiento del contexto institucional para desarrollar la docencia pero desvinculada de la investigación y extensión; se recomienda planificar talleres de formación para evitar la docencia parcelada, sin pertinencia social y científica.

  4. Marco Antonio Chaer Nascimento a festschrift from theoretical chemistry accounts

    CERN Document Server

    Ornellas, Fernando R

    2014-01-01

    In this Festschrift dedicated to the 65th birthday of Marco Antonio Chaer Nascimento, selected researchers in theoretical chemistry present research highlights on major developments in the field. Originally published in the journal Theoretical Chemistry Accounts, these outstanding contributions are now available in a hardcover print format. This volume will be of benefit in particular to those research groups and libraries that have chosen to have only electronic access to the journal. It also provides valuable content for all researchers in theoretical chemistry.

  5. Lymphoepithelial cyst in the palatoglossus arch

    Directory of Open Access Journals (Sweden)

    Evanice Maria Marçal Vieira

    2012-12-01

    Full Text Available The objective of this study was to describe a case of a lymphoepithelial cyst in the palatoglossus arch. A 16-years-old black man said that he was observed a lesion in his mouth. On the physical exam, a pedicled, consistent, smooth surface 1.5 x 1 cm lesion, similar in color to the adjacent mucosa, was found. The lesion was surgically removed and the microscopic exam showed mucosal fragments with pedicled lesion; the cystic cavity sometimes lined with pseudostratified cylindrical epithelium and others with stratified squamous flat interface of the epithelium. Around the cyst, a well-delimited mass of lymphoid tissue, presenting lymphoid follicles, was also seen. Lymphoepithelial cyst has clinical characteristics similar to those of others lesions that occur in the oral cavity. The diagnosis should be based on conservative biopsy, with total removal of lesion.

  6. SAN CARLOS APACHE PAPERS.

    Science.gov (United States)

    ROESSEL, ROBERT A., JR.

    THE FIRST SECTION OF THIS BOOK COVERS THE HISTORICAL AND CULTURAL BACKGROUND OF THE SAN CARLOS APACHE INDIANS, AS WELL AS AN HISTORICAL SKETCH OF THE DEVELOPMENT OF THEIR FORMAL EDUCATIONAL SYSTEM. THE SECOND SECTION IS DEVOTED TO THE PROBLEMS OF TEACHERS OF THE INDIAN CHILDREN IN GLOBE AND SAN CARLOS, ARIZONA. IT IS DIVIDED INTO THREE PARTS--(1)…

  7. San Carlo Operaen

    DEFF Research Database (Denmark)

    Holm, Bent

    2005-01-01

    En indplacering af operahuset San Carlo i en kulturhistorisk repræsentationskontekst med særligt henblik på begrebet napolalità.......En indplacering af operahuset San Carlo i en kulturhistorisk repræsentationskontekst med særligt henblik på begrebet napolalità....

  8. Fray Francisco de San Juan, a spanish missionary in Bahia in 1624

    Directory of Open Access Journals (Sweden)

    Iglesias Magalhães, Pablo Antonio

    2011-06-01

    Full Text Available The present article discloses the existence of an unpublished manuscript on the netherlandish invasion the Bahia in 1624. The author of the manuscript is a Spanish missionary called Fray Francisco de San Juan, who presents the best relation of the first months of the war, disclosing unknown details of the resistance against the invaders until the death of the Bishop D. Marcos Teixeira.

    El presente artículo divulga la existencia de un manuscrito inédito sobre la invasión neerlandesa en la Bahia en 1624. Su autor es el misionario español Fray Francisco de San Juan, que presenta la mejor relación de los primeros meses de la guerra, divulgando los detalles desconocidos de la resistencia contra los invasores hasta la muerte del Obispo D. Marcos Teixeira. [pt] O presente artigo divulga a existência de um manuscrito inédito sobre a invasão neerlandesa na Bahia em 1624. Seu autor é o missionário espanhol Frei Francisco de San Juan, que apresenta a melhor relação dos primeros meses da guerra, divulgando os detalhes desconhecidos da resistência contra os invasores até a morte do bispo D. Marcos Teixeira.

  9. MarcoPolo-R: Asteroid Sample Return Mission

    Science.gov (United States)

    Brucato, John Robert

    2012-07-01

    MarcoPolo-R is a sample return mission to a primitive Near-Earth Asteroid (NEA) selected for the assessment study in the framework of ESA Cosmic Vision 2015-25 program. MarcoPolo-R is an European-led mission with a proposed NASA contribution. MarcoPolo-R will rendezvous with a primitive carbon-rich NEA, scientifically characterize it at multiple scales, and return a unique sample to Earth unaltered by the atmospheric entry process or terrestrial weathering. The baseline target is a binary asteroid (175706) 1996 FG3, which offers a very efficient operational and technical mission profile. A binary target also provides enhanced science return. The choice of this target will allow new investigations to be performed more easily than at a single object, and also enables investigations of the fascinating geology and geophysics of asteroids that are impossible at a single object. Several launch windows have been identified in the time-span 2020-2024. The baseline mission scenario of MarcoPolo-R to 1996 FG3 foresees a single primary spacecraft, carrying the Earth re-entry capsule and sample acquisition and transfer system, launched by a Soyuz-Fregat rocket from Kourou. The scientific payload includes state-of-the-art instruments, e.g. a camera system for high resolution imaging from orbit and on the surface, spectrometers covering visible, near-infrared and mid-infrared wavelengths, a neutral-particle analyser, a radio science experiment and optional laser altimeter. If resources are available, an optional Lander will be added to perform in-situ characterization close to the sampling site, and internal structure investigations. MarcoPolo-R will allow us to study the most primitive materials available to investigate early solar system formation processes. The main goal of the MarcoPolo-R mission is to return unaltered NEA material for detailed analysis in ground-based laboratories. Only in the laboratory can instruments with the necessary precision and sensitivity be

  10. Description of dental arch form using the Fourier series.

    Science.gov (United States)

    Valenzuela, A Patricia; Pardo, Marco A; Yezioro, Salomon

    2002-01-01

    The aim of this study was to describe the form of the human superior dental arch using Fourier transformations. Forty models made in dental stone from impressions of the maxillary dental arch were used to obtain the reference data, which were expressed in Cartesian coordinates, from the mesovestibular cuspid vertices of molar teeth, vestibular cuspid of premolars, and incisal edge. Fourth-grade equations and Fourier series were calculated from these data. The results indicate that Fourier series more precisely express the form and size of different dental arches, with mixed or permanent dentition, than fourth-grade equations. Details of the mathematical procedure and the precision obtained were provided.

  11. The assessment of crowding without the need to record arch perimeter. Part I: Arches with acceptable alignment.

    Science.gov (United States)

    Battagel, J M

    1996-05-01

    A simplified, mathematically determined technique for calculating arch perimeter (the overlap method) is described and its validity in determining an accurate assessment of crowding is tested. Indices, expressed in millimetres of crowding or spacing, were computed for both the whole arch and the labial segment alone. Study casts of 36 individuals with clinically acceptable lower arches were used to validate the method. The degree of crowding or spacing calculated was compared with a "clinical' assessment of each arch, in which the irregularity was measured directly using a steel ruler. Various calculation schemes were tested. Depending on exactly how the overlap was determined, the results varied slightly. Although the arches showed acceptable alignment, it was preferable to include a strategy for normalizing the positions of any rotated teeth before the overlaps were calculated. Repositioning any bucco-lingually displaced teeth into the line of the arch, however, was not useful. For the complete arch good agreement with the clinical assessment was reached on 31 occasions and for the labial segment, all but one appraisals were within 0.5 mm of each other. In the remaining instances (five complete arches and one labial segment), the degree of crowding or spacing was between 0.5 and 1 mm of the clinical assessment. Considering that clinical measurement of minor degrees of crowding and spacing cannot be precise, these results were considered acceptable. The method was easy to use, relying only on the recording of mesio-distal tooth widths and was acceptably reproducible. The technique would therefore appear to provide a valid yet simple research tool with which to record the degree of crowding. Its ability to cope with irregular and crowded arches will be the subject of a subsequent review.

  12. A comparative study of inter-abutment distance of dies made from full arch dual-arch impression trays with those made from full arch stock trays: An in vitro study

    Directory of Open Access Journals (Sweden)

    Reddy Jagan

    2009-01-01

    Full Text Available Objectives: The dual-arch impression technique is convenient in that it makes the required maxillary and mandibular impressions, as well as the inter-occlusal record in one procedure. The accuracy of inter-abutment distance in dies fabricated from dual-arch impression technique remains in question because there is little information available in the literature. Materials and Methods: This study was conducted to evaluate the accuracy of inter-abutment distance in dies obtained from full arch dual-arch trays with those obtained from full arch stock metal trays. Results and Conclusion: The metal dual-arch trays showed better accuracy followed by the plastic dual-arch and stock dentulous trays, respectively, though statistically insignificant. The pouring sequence did not have any effect on the inter-abutment distance statistically, though pouring the non-working side of the dual-arch impression first showed better accuracy.

  13. Dental Arch Form Analysis in Gujarati Males and Females having Normal Occlusion

    Directory of Open Access Journals (Sweden)

    Vishnu Jagdishbhai Patel

    2012-01-01

    Results: As moving from anterior to posterior, both the arches diverge proportionally, except in second molar area where slight convergence toward midline was noted. Females had proportionally narrower arch dimensions than those for males. Five arch forms were determined according to relative deviations of various ratio combinations, and all subjects were classified for mandibular arch form by nonhierarchical stepwise method.

  14. Ley marco de aseguramiento universal en salud, bajo la lupa

    Directory of Open Access Journals (Sweden)

    Leoncio Díaz

    2009-04-01

    Full Text Available La Ley Marco de Aseguramiento Universal en Salud, concebida en el marco del modelo neoliberal conservador, excluyente y polarizante, fue aprobada en circunstancias en la que persisten grandes contrastes entre sistemas de salud. Por un lado, los países que mantienen subsistemas inconexos y privatizados y, por otro, los que unificados y bajo la responsabilidad del Estado, garantizan a todos el acceso integral, gratuito y de calidad a los servicios de salud. En América y el Caribe, existen países cuyos pobladores carecen de derechos y posibilidades, evidenciando las profundas inequidades que mantienen en exclusión a la mayoría pobre y de extrema pobreza, entre ellos, el Perú muestra indicadores de salud que aún se mantienen en cifras alarmantes y por debajo de los que presentan otras realidades en el mundo. En las últimas tres décadas hubo ensayos frustros de reformas, como la integración funcional del Ministerio de Salud con el Instituto Peruano de Seguridad Social, o el Sistema Nacional Coordinado y Descentralizado en Salud. Actualmente se formula la Ley Marco de Aseguramiento Universal, que mantiene los actuales subsistemas sin variación alguna y con sus propias autonomías, ensayando pilotos, estableciendo planes parciales, implementándola de manera progresiva, priorizando la privatización y debilitando la función rectora del Ministerio de Salud, al crear una superintendencia omnipotente, lo cual continuará permitiendo la exclusión social de más de 9 millones de peruanos. Existe, por tanto, la necesidad de plantear la unificación de los subsistemas, para construir un Sistema Único de Salud, capaz de otorgar salud plena, integral, de calidad y sin costo alguno al 100% de ciudadanos.

  15. Análisis del futuro marco de referencia internacional

    Science.gov (United States)

    Cionco, G. R.; Arias, E. F.

    La técnica de interferometría de muy larga línea de base (VLBI) se aplica hoy a la astrometría para el cálculo de posiciones precisas de radiofuentes extragalácticas. Por tratarse de objetos lejanos, sus movimientos propios aparentes pueden considerarse nulos; esta propiedad hace que los catálogos de radiofuentes extragalácticas VLBI constituyan la mejor materialización de un sistema de referencia celeste inercial definido cinemáticamente. La Unión Astronómica Internacional (IAU) recomendó la adopción de un nuevo sistema de referencia celeste internacional materializado por las coordenadas ecuatoriales de objetos extragalácticos observados con le técnica VLBI. Para superar la precisión astrométrica actual es necesaria una mejora en la modelización de aquellos fenómenos que pueden introducir desviaciones sistemáticas en el marco de referencia celeste. El objetivo de este trabajo es poner de manifiesto las sistematicidades presentes en los distintos marcos de referencia elaborados con el próposito de materializar el nuevo sistema de referencia celeste de la IAU. Para la comparación de los distintos marcos de referencia se propone un modelo de tres rotaciones diferenciales más un término lineal que procura absorber los efectos sistemáticos presentes en las coordenadas. Se analiza igualmente la estabilidad de la solución cuando se utilizan distintos conjuntos de objetos de definición.

  16. El marco constitucional vigente de la justicia transicional en Colombia

    OpenAIRE

    Gómez Velásquez, Alejandro; Universidad EAFIT

    2016-01-01

    El artículo aborda el dilema de la justicia transicional desde la perspectiva del derecho constitucional vigente en Colombia. El propósito es presentar cómo dicho marco constitucional puede responder a la aplicación de la justicia transicional, en especial en relación con el problema de la responsabilidad penal de quienes cometieron atrocidades durante el conflicto armado, dentro de un proceso de diálogo y negociación. En otras palabras, el presente escrito está enfocado en presentar cuáles s...

  17. Marco conceptual de la administración de proyectos

    OpenAIRE

    Arias Chaves, Michael

    2010-01-01

    El presente artículo describe el marco conceptual de la administración de proyectos. Además, se da a conocer el apoyo que por medio del Instituto de Administración de Proyectos se puede obtener para manejar proyectos, y se explica cuál es el aporte que tanto la guía PMBOK como la certificación PMP pueden generar a los proyectos y a los equipos de trabajo. Los aspectos desarrollados en este artículo pueden ser útiles para profesionales que deseen conocer sobre qué significa conducir proyectos,...

  18. Ejercicio de lectura de Marcos Ramírez

    OpenAIRE

    2012-01-01

    Se hace un análisis de la novela Marcos Ramírez de Carlos Luis Fallas, señalándola como pilar de la tradición costarricense; enmarcándola en la novelística de la llamada Generación del 40, en la literatura nacional. Se analiza la instancia narrativa encontrando que esta novela posee un narrador autodiegético, esto quiere decir que ese plano es una instancia doble, un elemento único en el cual se reúnen dos aspectos diferentes: el personaje, que es agente o paciente de la acción y el narrador,...

  19. Marco conceptual de la administración de proyectos

    OpenAIRE

    Arias Chaves, Michael

    2010-01-01

    El presente artículo describe el marco conceptual de la administración de proyectos. Además, se da a conocer el apoyo que por medio del Instituto de Administración de Proyectos se puede obtener para manejar proyectos, y se explica cuál es el aporte que tanto la guía PMBOK como la certificación PMP pueden generar a los proyectos y a los equipos de trabajo. Los aspectos desarrollados en este artículo pueden ser útiles para profesionales que deseen conocer sobre qué significa conducir proyectos,...

  20. Nonstationary ARCH and GARCH with t-distributed Innovations

    DEFF Research Database (Denmark)

    Pedersen, Rasmus Søndergaard; Rahbek, Anders

    Consistency and asymptotic normality are established for the maximum likelihood estimators in the nonstationary ARCH and GARCH models with general t-distributed innovations. The results hold for joint estimation of (G)ARCH effects and the degrees of freedom parameter parametrizing the t-distribut......Consistency and asymptotic normality are established for the maximum likelihood estimators in the nonstationary ARCH and GARCH models with general t-distributed innovations. The results hold for joint estimation of (G)ARCH effects and the degrees of freedom parameter parametrizing the t......-distribution. With T denoting sample size, classic square-root T-convergence is shown to hold with closed form expressions for the multivariate covariances....

  1. Knowledge and attitudes of dentists toward shortened dental arch ...

    African Journals Online (AJOL)

    2015-08-03

    Aug 3, 2015 ... Key words: Attitude, dentist, knowledge, shortened dental arch. Date of Acceptance: ... practice of SDA therapy among dentists in Saudi Arabia, no studies are available in ..... partial denture was similar. Therefore, the attitude ...

  2. A case of neonatal arterial thrombosis mimicking interrupted aortic arch.

    Science.gov (United States)

    Gürsu, Hazım Alper; Varan, Birgül; Oktay, Ayla; Özkan, Murat

    2015-06-01

    Neonatal arterial thrombosis is a very rare entity with clinical findings resembling coarctation of aorta or interrupted aortic arch. A two day-old male newborn was admitted to a different hospital with difficulty in sucking and sleepiness. On echocardiographic examination, a diagnosis of interrupted aortic arch was made and he was treated with prostoglandin E2. When the patient presented to our center, physical examination revealed that his feet were bilaterally cold. The pulses were not palpable and there were ecchymotic regions in the lower extremities. Echocardiography ruled out interrupted aortic arch. Computerized tomographic angiography revealed a large thrombosis and total occlusion of the abdominal aorta. Since there was no response to treatment with tissue plasminogen activator, we performed thrombectomy. Homozygous Factor V Leiden and Methylenetetrahydrofolate reductase mutations were found in this patient. Neonatal aortic thrombosis which is observed very rarely and fatal should be considered in the differential diagnosis of coarctation of aorta and interrupted aortic arch.

  3. Clarifying the anatomy of the fifth arch artery

    Directory of Open Access Journals (Sweden)

    Saurabh Kumar Gupta

    2016-01-01

    Full Text Available The artery allegedly forming in the fifth pharyngeal arch has increasingly been implicated as responsible for various vascular malformations in patients with congenitally malformed hearts. Observations from studies on developing embryos, however, have failed to provide support to substantiate several of these inferences such that the very existence of the fifth arch artery remains debatable. To the best of our knowledge, in only a solitary human embryo has a vascular channel been found that truly resembled the artery of the fifth arch. Despite the meager evidence to support its existence, the fifth arch artery has been invoked to explain the morphogenesis of double-barreled aorta, some unusual forms of aortopulmonary communications, and abnormalities of the brachiocephalic arteries. In most of these instances, the interpretations have proved fallible when examined in the light of existing knowledge of cardiac development. In our opinion, there are more plausible alternative explanations for the majority of these descriptions. Double-barreled aorta is more likely to result from retention of the recently identified dorsal collateral channels while abnormalities of brachiocephalic arteries are better explained on the basis of extensive remodeling of aortic arches during fetal development. Some examples of aortopulmonary communications, nonetheless, may well represent persistence of the developing artery of the fifth pharyngeal arch. We here present one such case - a patient with tetralogy of Fallot and pulmonary atresia, in whom the fifth arch artery provided a necessary communication between the ascending aorta and the pulmonary arteries. In this light, we discuss the features we consider to be essential before attaching the tag of "fifth arch artery" to a candidate vascular channel.

  4. Unusual Morphology of the Anterior Arch of Atlas

    Directory of Open Access Journals (Sweden)

    Srinivasa Rao Sirasanagndla

    2016-10-01

    Full Text Available Anomalies of anterior arch of atlas vertebra are seldom reported in the literature. Presence of inferior accessory ossicle is one of the reported anomalies of the anterior arch of atlas. In the present case, we report a rare case of unusual morphology of the atlas vertebra. It was observed in one of the bones macerated locally for the teaching purpose. There were two wide accessory bony laminae extending from the middle three fourth of the superior and inferior aspect of the anterior arch proper. Each bony lamina was measured 4 cm x 0.3 mm. Further, there were small foramina along the attached border of the each bony lamina. Anterior tubercle was situated at the lower edge of the anterior arch proper. Accessory bony lamina may interfere with rotatory movements of the atlas and may lead to degenerative changes of the dense. Reporting of unusual morphology of anterior arch of atlas vertebra is clinically important during diagnostic procedures of neck pain. Sometimes this extra growth of the anterior arch may be mistaken for the pathologic mass.

  5. Monitoring system of arch bridge for safety network management

    Science.gov (United States)

    Joo, Bong Chul; Yoo, Young Jun; Lee, Chin Hyung; Park, Ki Tae; Hwang, Yoon Koog

    2010-03-01

    Korea has constructed the safety management network monitoring test systems for the civil infrastructure since 2006 which includes airport structure, irrigation structure, railroad structure, road structure, and underground structure. Bridges among the road structure include the various superstructure types which are Steel box girder bridge, suspension bridge, PSC-box-girder bridge, and arch bridge. This paper shows the process of constructing the real-time monitoring system for the arch bridge and the measured result by the system. The arch type among various superstructure types has not only the structural efficiency but the visual beauty, because the arch type superstructure makes full use of the feature of curve. The main measuring points of arch bridges composited by curved members make a difference to compare with the system of girder bridges composited by straight members. This paper also shows the method to construct the monitoring system that considers the characteristic of the arch bridge. The system now includes strain gauges and thermometers, and it will include various sensor types such as CCTV, accelerometers and so on additionally. For the long term and accuracy monitoring, the latest optical sensors and equipments are applied to the system.

  6. Comparison of arch forms between Turkish and North American

    Directory of Open Access Journals (Sweden)

    Ahmet A. Celebi

    2016-04-01

    Full Text Available ABSTRACT Objective: The aim of this study was to clarify the morphological differences in the mandibular arches of Turkish and North American white subjects. Methods: The sample included 132 Turkish (34 Class I, 58 Class II, and 40 Class III and 160 North American (60 Class I, 50 Class II, and 50 Class III subjects. The most facial portion of 13 proximal contact areas was digitized from photocopied images of patients' mandibular dental arches. Clinical bracket points were calculated for each tooth based on mandibular tooth thickness data. Four linear and two proportional measurements were taken. The subjects were grouped according to arch form types (tapered, ovoid and square in order to have frequency distribution compared between ethnic groups in each Angle classification. Results: The Turkish group showed significantly lower molar depth and more significant molar width-depth (W/D ratio in all three Angle classifications. On the other hand, the Turkish group also showed a significantly larger intercanine width in Class III malocclusion and intermolar width in Class II malocclusion. The most frequent arch forms seen were the ovoid arch form in the Turkish group and the tapered form in the white group. Conclusions: Our results demonstrate that when treating Turkish patients, one should expect to use preformed ovoid arch form orthodontic wires in a significant percentage of patients.

  7. Comparison of arch forms between Turkish and North American

    Science.gov (United States)

    Celebi, Ahmet A.; Keklik, Hakan; Tan, Enes; Ucar, Faruk I.

    2016-01-01

    ABSTRACT Objective: The aim of this study was to clarify the morphological differences in the mandibular arches of Turkish and North American white subjects. Methods: The sample included 132 Turkish (34 Class I, 58 Class II, and 40 Class III) and 160 North American (60 Class I, 50 Class II, and 50 Class III) subjects. The most facial portion of 13 proximal contact areas was digitized from photocopied images of patients' mandibular dental arches. Clinical bracket points were calculated for each tooth based on mandibular tooth thickness data. Four linear and two proportional measurements were taken. The subjects were grouped according to arch form types (tapered, ovoid and square) in order to have frequency distribution compared between ethnic groups in each Angle classification. Results: The Turkish group showed significantly lower molar depth and more significant molar width-depth (W/D) ratio in all three Angle classifications. On the other hand, the Turkish group also showed a significantly larger intercanine width in Class III malocclusion and intermolar width in Class II malocclusion. The most frequent arch forms seen were the ovoid arch form in the Turkish group and the tapered form in the white group. Conclusions: Our results demonstrate that when treating Turkish patients, one should expect to use preformed ovoid arch form orthodontic wires in a significant percentage of patients. PMID:27275615

  8. Relationship between Dental Arch Dimensions and Vertical Facial Morphology in Class I Subjects

    Directory of Open Access Journals (Sweden)

    Amit Kumar Khera

    2012-01-01

    Results: The results showed that, for both males and females, there was a trend that as vertical facial height increased, arch width, arch perimeter and overbite decreased but palatal height and curve of Spee increased and males have significantly larger arch dimensions than those of females. Conclusion: It was concluded that dental arch dimensions were associated with facial vertical morphology and gender. Thus, using individualized archwires according to each patient′s pretreatment arch form and width is suggested during orthodontic treatment.

  9. La competencia federal en el marco del amparo en salud

    Directory of Open Access Journals (Sweden)

    Agustín Carignani

    2016-03-01

    Full Text Available El presente trabajo estudia la competencia federal en el marco de las acciones de amparo en salud, también conocidas como bioamparos. Para ello, se toman los conceptos y principios que rigen la competencia federal para luego verlos plasmados en las sentencias judiciales analizadas. Se verán fallos paradigmáticos en cuanto a las interpretaciones judiciales y como estas interpretaciones buscan en definitiva salvaguardar el derecho a la salud y su correlativo derecho a la vida. El objetivo de este trabajo es analizar en los distintos casos jurisprudenciales propuestos, la competencia federal de los amparos en salud. Para ello partiremos de los conceptos y normas que determinan la competencia federal, y desde allí analizar los casos propuestos. En este orden de ideas, se partirá de la doctrina predominante de competencia federal, sus características y se expondrá una referencia breve de la competencia ratione materiae y ratione personae para establecer el marco teórico del análisis de los casos jurisprudenciales analizados.

  10. Marco de trabajo para gestionar las competencias laborales

    Directory of Open Access Journals (Sweden)

    Franklin Sandoval

    2014-12-01

    Full Text Available En este artículo se presenta un marco de trabajo innovador diseñado y desarrollado para posibilitar la realización de estudios inherentes con la gestión por competencia en los entornos laborales de la Administración Pública Venezolana (APV. Se analizaron los principales aspectos involucrados con la Gestión del Talento Humano (GTH, que se basan en la competencia laboral, las cuales mediante su desarrollo efectivo se constituyen en fuente principal para impulsar el logro de los objetivos empresariales orientados en responder las necesidades del entorno laboral y las exigencias del mercado. El desarrollo, se fundamento en el dominio del conocimiento de las competencias laborales y perfiles de cargos que estructura el proceso de gestión sobre tres actividades: 1 identificación, 2 desarrollo y 3 evaluación. El método utilizado, fue proyectivo y permitió obtener un marco de trabajo en el que se describe una metodología, la cual establece formalmente las reglas, estándares, así como secuencias de pasos para la caracterización de la competencia laboral y, sobre todo, la gestión que promueve las tareas y roles para la toma de decisiones.

  11. The Cenozoic evolution of the San Joaquin Valley, California

    Science.gov (United States)

    Bartow, J. Alan

    1991-01-01

    The San Joaquin Valley, which is the southern part of the 700-km-long Great Valley of California, is an asymmetric structural trough that is filled with a prism of upper Mesozoic and Cenozoic sediments up to 9 km thick; these sediments rest on crystalline basement rocks of the southwestward-tilted Sierran block. The San Joaquin sedimentary basin is separated from the Sacramento basin to the north by the buried Stockton arch and associated Stockton fault. The buried Bakersfield arch near the south end of the valley separates the small Maricopa-Tejon subbasin at the south end of the San Joaquin basin from the remainder of the basin. Cenozoic strata in the San Joaquin basin thicken southeastward from about 800 m in the north to over 9,000 m in the south. The San Joaquin Valley can be subdivided into five regions on the basis of differing structural style. They are the northern Sierran block, the southern Sierran block, the northern Diablo homocline, the westside fold belt, and the combined Maricopa-Tejon subbasin and southmargin deformed belt. Considerable facies variation existed within the sedimentary basin, particularly in the Neogene when a thick section of marine sediment accumulated in the southern part of the basin, while a relatively thin and entirely nonmarine section was deposited in the northern part. The northern Sierran block, the stable east limb of the valley syncline between the Stockton fault and the San Joaquin River, is the least deformed region of the valley. Deformation consists mostly of a southwest tilt and only minor late Cenozoic normal faulting. The southern Sierran block, the stable east limb of the valley syncline between the San Joaquin River and the Bakersfield arch, is similar in style to the northern part of the block, but it has a higher degree of deformation. Miocene or older normal faults trend mostly north to northwest and have a net down-to-the-west displacement with individual offsets of as much as 600 m. The northern Diablo

  12. É hora da Marta parir novamente: Villa San Luis, o ocaso de um sonho de igualdade / It’s time for Marta to give birth again: Villa San Luis, the demise of an equality dream

    OpenAIRE

    Diligenti, Marcos Pereira; Dias, Maria Alice Medeiros

    2015-01-01

    Trabalho enviado em 30 de setembro de 2015. Aceito em 22 de outubro de 2015.DOI: http://dx.doi.org/10.12957/rdc.2015 Resumo Originária do Fundo San Luis, a Villa San Luis, localizada na Comuna de Las Condes, Santiago do Chile, teve como marco inicial de sua urbanização o projeto elaborado pelo Arquiteto Miguel Eyquem, realizado na década de 1960, na gestão do Presidente Eduardo Frei Montalva. Posteriormente, já sob a administração da Unidade Popular, do então Presidente Salvador Allende, s...

  13. Elastic responses of underground circular arches considering dynamic soil-structure interaction: A theoretical analysis

    Science.gov (United States)

    Chen, Hai-Long; Jin, Feng-Nian; Fan, Hua-Lin

    2013-02-01

    Due to the wide applications of arches in underground protective structures, dynamic analysis of circular arches including soil-structure interactions is important. In this paper, an exact solution of the forced vibration of circular arches subjected to subsurface denotation forces is obtained. The dynamic soil-structure interaction is considered with the introduction of an interfacial damping between the structure element and the surrounding soil into the equation of motion. By neglecting the influences of shear, rotary inertia and tangential forces and assuming the arch incompressible, the equations of motion of the buried arches were set up. Analytical solutions of the dynamic responses of the protective arches were deduced by means of modal superposition. Arches with different opening angles, acoustic impedances and rise-span ratios were analyzed to discuss their influences on an arch. The theoretical analysis suggests blast loads for elastic designs and predicts the potential failure modes for buried protective arches.

  14. [Relationship between aortic arch shape and blood pressure response after coarctation repair].

    Science.gov (United States)

    Ou, P; Mousseaux, E; Auriacombe, L; Pédroni, E; Balleux, F; Sidi, D; Bonnet, D

    2005-01-01

    The mechanisms of secondary hypertension after repair of coarctation of the aorta are not well understood. Abnormalities of the architecture of the aortic arch and their consequences on blood pressure have not been studied. In order to study the relationship between abnormalities or aortic arch architecture and resting blood pressure ninety-four patients without re-coarctation were followed up prospectively from 1997 to 2004 (mean age 16.9 +/- 8.1 years; mean weight 57.5 +/- 18.3 Kg; interval since surgery 16.3 +/- 5.4 years). All underwent MRI angiography of the thoracic aorta which enabled the abnormalities to be classified in 3 groups: gothic arch, crenellated arch and roman arch. Twenty-four patients (25.5%) were hypertensive and 70 (74.4%) normotensive. There were 40 gothic arches (42.5%). 14 crenellated arches (15%) and 40 roman arches (42.5%). Gothic arches were more commonly observed in the hypertensive patients (18/40, [45%, 95% CI 31-62]) than the crenellated arches (4/14, [28.5%, 95% CI 7-48]) or the roman arches (2/40, [5%, 95% CI 2-12]). Only the gothic arch was independently correlated with hypertension on multivariate analysis. The authors conclude that gothic deformation of the aortic arch is an independent predictive factor of hypertension in patients operated for coarctation with an excellent result on the isthmic region. Patients with a gothic appearance of their aortic arch should be followed up closely.

  15. Acciones Estratégicas para enfrentar la inseguridad ciudadana en la Provincia de San Román

    OpenAIRE

    Nuñez Quispe , Mariluz

    2015-01-01

    El presente estudio desarrollado trata esencialmente sobre las acciones estratégicas para enfrentar la inseguridad ciudadana en la provincia de San Román, situación que se presenta a nivel del país, prueba de ello son las informaciones que a diario se describen por los diferentes medios de comunicación. Tiene como objetivo, determinar las acciones estratégicas para enfrentar la inseguridad ciudadana en la provincia de San Román; esta situación se realizan en el marco de...

  16. Marcos interpretativos, identidad e imaginario en el mexica movement

    Directory of Open Access Journals (Sweden)

    Aquiles Chihu Amparán

    2007-01-01

    Full Text Available El objetivo de este artículo es analizar el mexica movement, a través de su discurso e imaginario, representados en un conjunto de utopías, símbolos, mitos y creencias, que revitalizan la cultura y el pasado mesoamericano. Se aplica la metodología del análisis de los marcos (frame analysis, con sus cinco partes: el protagonista, el problema, el antagonista, las metas y la audiencia. En el estudio de los movimientos sociales ha prevalecido el análisis de los aspectos políticos y estructurales, aquí a dichos movimientos se les observa en función de sus capacidades como productores de significados, que contribuyen a conformar su identidad colectiva.

  17. La lectura hipermedial. Hacia un marco teórico

    Directory of Open Access Journals (Sweden)

    Zamora Suárez, Liliana

    2016-02-01

    Full Text Available El objetivo de este trabajo es establecer el marco teórico hacia un aprendizaje significativo durante la lectura hipermedial teniendo en cuenta los procesos cognitivos que se ponen en marcha en el transcurso de la práctica lectora. El texto hipermedial se caracteriza por su falta de linealidad y por un lenguaje enriquecido con imágenes, vídeos y sonidos lo que puede causar sobrecarga en la memoria de trabajo, atención dividida y falta de coherencia afectando, en definitiva, la comprensión lectora. Por tanto, es preciso seleccionar los documentos de forma adecuada, así como instruir al aprendiente en estrategias lectoras y de gestión digital que le permitan llevar a cabo la lectura de forma reflexiva y consciente para llegar a un aprendizaje significativo.

  18. Characterization of the cephalic arch and location of stenosis

    Science.gov (United States)

    Bennett, Shelby; Hammes, Mary S.; Blicharski, Tom; Watson, Sydeaka; Funaki, Brian

    2015-01-01

    Purpose The purpose of this study is to accurately characterize the cephalic arch segments into four domains and to enable more specific evaluation of cephalic arch stenosis (CAS) and determine the frequency of stenosis in each domain. Methods After Institutional Review Board (IRB) approval, a retrospective chart review was done to define a population of patients receiving hemodialysis who developed CAS as apparent on clinically indicated radiologic imaging. A standardized approach was devised to categorize four domains of the cephalic arch. Domain I was defined as the peripheral portion of the arch and Domain IV was the distal portion of the cephalic vein near termination with the axillary vein. The magnitude of stenosis as measured by percentage was determined and compared in the four domains. Results The most frequent location for stenosis was found in domain IV when compared with domains II or I (p<0.01). The magnitude of stenosis differed across all domains (p<0.001) with the least common place for CAS in domain I. Treatment of CAS included angioplasty in all, thrombectomy in eight, and stent placement in five. Conclusions CAS occurs most commonly in the terminal portion of the arch. Four standardized domains have been defined; future work will validate these findings and determine the best intervention for each domain. PMID:25198819

  19. Three-dimensional stiffness of the carpal arch.

    Science.gov (United States)

    Gabra, Joseph N; Li, Zong-Ming

    2016-01-01

    The carpal arch of the wrist is formed by irregularly shaped carpal bones interconnected by numerous ligaments, resulting in complex structural mechanics. The purpose of this study was to determine the three-dimensional stiffness characteristics of the carpal arch using displacement perturbations. It was hypothesized that the carpal arch would exhibit an anisotropic stiffness behavior with principal directions that are oblique to the conventional anatomical axes. Eight (n=8) cadavers were used in this study. For each specimen, the hamate was fixed to a custom stationary apparatus. An instrumented robot arm applied three-dimensional displacement perturbations to the ridge of trapezium and corresponding reaction forces were collected. The displacement-force data were used to determine a three-dimensional stiffness matrix using least squares fitting. Eigendecomposition of the stiffness matrix was used to identify the magnitudes and directions of the principal stiffness components. The carpal arch structure exhibited anisotropic stiffness behaviors with a maximum principal stiffness of 16.4±4.6N/mm that was significantly larger than the other principal components of 3.1±0.9 and 2.6±0.5N/mm (pcarpal tunnel which is accounted for by the stiff transverse ligaments that tightly bind distal carpal arch. The minimal principal stiffness is attributed to the less constraining articulation between the trapezium and scaphoid. This study provides advanced characterization of the wrist׳s three-dimensional structural stiffness for improved insight into wrist biomechanics, stability, and function.

  20. An arch to deal with Chernobyl; Une arche pour liquider Tchernobyl

    Energy Technology Data Exchange (ETDEWEB)

    Anon

    2009-10-15

    The preliminary works for the construction of a giant arch to cover the old sarcophagus of Chernobyl's ex-reactor No.4 are in progress. This building will have two functions: a safety barrier around the sarcophagus and a protection against bad weather in order to prepare the future dismantling of the inside using robots. The main contractor of the project is Novarka, a Bouygues-Vinci consortium who won the contract on September 18, 2007 in front of the US CH2M Hill. The end of the works is planned to March 31, 2012. 430 million euros have been invested for the improvement of Chernobyl's site safety. (J.S.)

  1. Monitoring and assessment of regional air quality in China using space observations (Marco Polo)

    NARCIS (Netherlands)

    Ronald, A. van der; Timmermans, R.; Bai, J.; Zhang, Q.; Wal, L. van der

    2013-01-01

    In this paper we will present the FP7-project 'MarcoPolo'. The main objective of MarcoPolo is to improve air quality monitoring, modelling and forecasting over China using satellite data. During the project a new emission inventory will be constructed by combining Chinese and European expertise. It

  2. Monitoring and assessment of regional air quality in China using space observations (Marco Polo)

    NARCIS (Netherlands)

    Ronald, A. van der; Timmermans, R.; Bai, J.; Zhang, Q.; Wal, L. van der

    2013-01-01

    In this paper we will present the FP7-project 'MarcoPolo'. The main objective of MarcoPolo is to improve air quality monitoring, modelling and forecasting over China using satellite data. During the project a new emission inventory will be constructed by combining Chinese and European expertise. It

  3. Classification of the height and flexibility of the medial longitudinal arch of the foot

    DEFF Research Database (Denmark)

    Nilsson, Mettte Kjaergaard; Friis, Rikke; Michaelsen, Maria Skjoldahl

    2012-01-01

    BACKGROUND: The risk of developing injuries during standing work may vary between persons with different foot types. High arched and low arched feet, as well as rigid and flexible feet, are considered to have different injury profiles, while those with normal arches may sustain fewer injuries......-off values presented in this study can be used to categorize people performing standing work into groups of different foot arch types. The results of this study are important for investigating a possible link between arch height and arch movement and the development of injuries....

  4. In-Plane MEMS Shallow Arch Beam for Mechanical Memory

    Directory of Open Access Journals (Sweden)

    Md Abdullah Al Hafiz

    2016-10-01

    Full Text Available We demonstrate a memory device based on the nonlinear dynamics of an in-plane microelectromechanical systems (MEMS clamped–clamped beam resonator, which is deliberately fabricated as a shallow arch. The arch beam is made of silicon, and is electrostatically actuated. The concept relies on the inherent quadratic nonlinearity originating from the arch curvature, which results in a softening behavior that creates hysteresis and co-existing states of motion. Since it is independent of the electrostatic force, this nonlinearity gives more flexibility in the operating conditions and allows for lower actuation voltages. Experimental results are generated through electrical characterization setup. Results are shown demonstrating the switching between the two vibrational states with the change of the direct current (DC bias voltage, thereby proving the memory concept.

  5. Game model of safety monitoring for arch dam deformation

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    Arch dam deformation is comprehensively affected by water pressure,temperature,dam’s structural behavior and material properties as well as other factors.Among them the water pressure and temperature are external factors(source factors) that cause dam deformation,and dam’s structural behavior and material properties are the internal factors of deformation(resistance factors).The dam deformation is the result of the mutual game playing between source factors and resistance factors.Therefore,resistance factors of structure and materials that reflect resistance character of arch dam structure are introduced into the traditional model,where structure factor is embodied by the flexibility coefficient of dam body and the maximum dam height,and material property is embodied by the elastic modulus of dam.On the basis of analyzing the correlation between dam deformation and resistance factors,the game model of safety monitoring for arch dam deformation is put forward.

  6. LANGER’S AXILLARY ARCH AND ITS CLINICAL IMPLICATIONS

    Directory of Open Access Journals (Sweden)

    Jyothi K C

    2014-09-01

    Full Text Available Introduction: The axillary arch muscle of Langer is the most common anatomical variant of axillary musculature which is of clinical and surgical importance. It may lead to neurovascular compression syndrome in the cervicoaxillary region and can be misinterpreted while examining axilla and also impairs movements of shoulder joint. Observation: During routine dissection of axilla for undergraduate teaching, an unusual muscular slip in the left axilla was observed .The muscular slip was extending from lattisimus dorsi muscle to undersurface of pectoralis major muscle, arching over axillary vessels and cords of brachial plexus. Conclusion: The axillary arch may cause obstruction to axillary vessels and nerves and may be involved in thoracic outlet syndrome and shoulder instability. The knowledge of this muscular variant could help to minimize intraoperative complications related to surgeries in or nearby axilla such as mastectomy, breast reconstruction and axillary lymphadenectomy or lymph node biopsy.

  7. In-Plane MEMS Shallow Arch Beam for Mechanical Memory

    KAUST Repository

    Hafiz, Md Abdullah Al

    2016-10-18

    We demonstrate a memory device based on the nonlinear dynamics of an in-plane microelectromechanical systems (MEMS) clamped–clamped beam resonator, which is deliberately fabricated as a shallow arch. The arch beam is made of silicon, and is electrostatically actuated. The concept relies on the inherent quadratic nonlinearity originating from the arch curvature, which results in a softening behavior that creates hysteresis and co-existing states of motion. Since it is independent of the electrostatic force, this nonlinearity gives more flexibility in the operating conditions and allows for lower actuation voltages. Experimental results are generated through electrical characterization setup. Results are shown demonstrating the switching between the two vibrational states with the change of the direct current (DC) bias voltage, thereby proving the memory concept.

  8. El «Ordo Docendi» Ilustrado de Moseñor Marcos de Lianes para el seminario Conciliar de Segovia (1783

    Directory of Open Access Journals (Sweden)

    Gérard DUFOUR

    2010-03-01

    Full Text Available RESUMEN: Resultaría ocioso, en esta revista, subrayar la importancia de los seminarios conciliares como centros docentes encargados de la educación de futuros eclesiásticos, o sea, de la élite social e intelectual que habría de formar e informar a las masas incultas. Sin embargo, situándonos en la línea de trabajos recientes —los de Antonio Viñao Frago y Cayetano Mas Galván, para el Seminario Conciliar de San Fulgencio, de Murcia, y de Luis Barbastro Gil, para el de Segorbe, que muestran claramente la relación existente entre la enseñanza dispensada en estos centros y la postura «jansenista», primero, y luego «constitucional» de sus alumnos durante el Trienio Liberal— quisiéramos llamar la atención sobre el Seminario de San Frutos y San Ildefonso, de Segovia (otro foco de jansenismo y liberalismo, cuyas constituciones, presentadas por el obispo don Alfonso Marcos de Lianes, fueron aprobadas en 1783.

  9. San Pascual (1989) n. 272

    OpenAIRE

    Pérez, María Dolores, O.S.C. (Directora)

    1989-01-01

    Editorial. Entrevista madre abadesa. Ofrenda. San Pascual tercer centenario de la canonizacion y cuarto de su muerte. San Pascual, un Santo universal. Pascual Baylón, poeta. grupo Scout Sant Pasqual. Aportaciones, donativos, limosnas, benefactores. Boletin informativo del templo de San Pascual de villareal.

  10. Management of hypoplastic aortic arch associated with neonatal coarctation.

    Science.gov (United States)

    Caspi, J; Ilbawi, M N; Muster, A; Roberson, D; Arcilla, R

    1994-12-01

    Controversy still exists as to whether hypoplastic aortic arch frequently associated with neonatal coarctation, should be enlarged at the time of coarctation repair. To determine the indications for and the outcome of repair of hypoplastic aortic arch, pre- and postoperative angiograms/echocardigraphy of 77 cases with isolated (n = 25, Group 1) or complex (n = 52, Group 2) neonatal coarctation operated upon between 1/80 and 12/89 were reviewed. Age was 5-14 days (mean 8 +/- 1.6). Aortic arch/ascending aorta diameter ratio (AR/AA) as a measure of the degree of aortic arch hypoplasia was 0.39-0.64 (0.52 +/- 0.04) in isolated and 0.15-0.47 (0.34 +/- 0.06) in complex coarctation (p < 0.05). Left subclavian flap aortoplasty was used in 72 patients; alone in 25, in combination with pulmonary artery banding in 43 patients, and simultaneously with intracardiac repair in 4 patients. Extensive reconstruction of aortic arch and coarctation with synthetic patch was performed in the remaining 5 patients (AR/AO = 0.16 +/- 0.03) using cardiopulmonary by-pass at the time of intracardiac repair. Operative mortality was 2/76 (2.5%). Follow-up is 6.6 +/- 1.4 years. Recoarctation occurred in 3 patients (4%). AR/AA increased to 0.86 +/- 0.1 in isolated (p < 0.05 vs preoperative) and to 0.7 +/- 0.1 in complex coarctation (p < 0.05 vs preoperative). In the majority of cases, hypoplastic aortic arch associated with coarctation grows satisfactorily following simple repair of coarctation with no significant residual narrowing.(ABSTRACT TRUNCATED AT 250 WORDS)

  11. Optical silencing of C. elegans cells with arch proton pump.

    Directory of Open Access Journals (Sweden)

    Ayako Okazaki

    Full Text Available BACKGROUND: Optogenetic techniques using light-driven ion channels or ion pumps for controlling excitable cells have greatly facilitated the investigation of nervous systems in vivo. A model organism, C. elegans, with its small transparent body and well-characterized neural circuits, is especially suitable for optogenetic analyses. METHODOLOGY/PRINCIPAL FINDINGS: We describe the application of archaerhodopsin-3 (Arch, a recently reported optical neuronal silencer, to C. elegans. Arch::GFP expressed either in all neurons or body wall muscles of the entire body by means of transgenes were localized, at least partially, to the cell membrane without adverse effects, and caused locomotory paralysis of worms when illuminated by green light (550 nm. Pan-neuronal expression of Arch endowed worms with quick and sustained responsiveness to such light. Worms reliably responded to repeated periods of illumination and non-illumination, and remained paralyzed under continuous illumination for 30 seconds. Worms expressing Arch in different subsets of motor neurons exhibited distinct defects in the locomotory behavior under green light: selective silencing of A-type motor neurons affected backward movement while silencing of B-type motor neurons affected forward movement more severely. Our experiments using a heat-shock-mediated induction system also indicate that Arch becomes fully functional only 12 hours after induction and remains functional for more than 24 hour. CONCLUSIONS/SGNIFICANCE: Arch can be used for silencing neurons and muscles, and may be a useful alternative to currently widely used halorhodopsin (NpHR in optogenetic studies of C. elegans.

  12. Planning and Analysis of an Arched Indoor Stadium

    Directory of Open Access Journals (Sweden)

    Alice T V

    2014-04-01

    Full Text Available This paper deals with planning and designing of a multilevel indoor stadium with hanging table tennis court and Olympic standard swimming pool. In order to support the large span the stadium is designed as an arched structure. The materials for the construction are chosen so as to have a minimum carbon di-oxide foot print. Static and earthquake analysis were done by using STAAD.Pro V8i. The paper also does a comparison between arched structure and plane frame structure.

  13. Aneurysm of the superficial palmar arch: a case report.

    Science.gov (United States)

    Estrella, Emmanuel P; Lee, Ellen Y

    2008-01-01

    Aneurysms of the hand are uncommon lesions. The most common location is the ulnar artery. We present a case of a young female who consulted us for a hand mass with a history of trauma to the hand. Pre-operative arteriogram showed a superficial palmar arch aneurysm. The mass was excised and the arch was reconstructed using a reversed Y-shaped vein graft. Fourteen months after surgery, there was no recurrence of the aneurysm and the patient only reported occasional cold intolerance.

  14. AORTIC ARCH-STUDY OF DIFFERENT BRANCHING PATTERNS

    Directory of Open Access Journals (Sweden)

    Nijagunappa

    2016-01-01

    Full Text Available INTRODUCTION The arch of aorta is the continuation of ascending aorta which arises from the left ventricle inside the fibrous pericardium. The arch is convex upwards, behind and somewhat towards the left sided if it has to be described in 3 dimensionally. The study was conducted in the Department of Anatomy at KMCT, Kozhikode from 2014-2015. Fifty formalin fixed heart specimens of both sexes with age ranging between 50 to 70 years were used. Mainly three types were noted.

  15. Full-arch milled titanium implant bridge: technical report.

    Science.gov (United States)

    Peché, Wendy-Ann; Van Vuuren, Ludwig Jansen; Park, Chae

    2011-09-01

    The manufacturing of full-arch fixed implant-supported bridges with the use of the traditional lost wax technique remains a technical challenge. Distortion of the alloy during casting and subsequent heating cycles during porcelain build-up causes numerous problems. Fracturing of porcelain on large restorations is difficult and costly to restore. The fitting problems can be eliminated by utilising CAD/CAM technology in the manufacturing of long-span or full-arch titanium bridges. Repair of damaged porcelain can be simplified with the use of discrete, individually-removable crowns on the bridge.

  16. Excitation of Arch and Suspension Bridges by Subwires

    Directory of Open Access Journals (Sweden)

    Noriaki Hiwatashi

    1993-01-01

    Full Text Available A force generation method using a subwire for arch and suspension bridges is proposed. The subwire is connected to the arch or the cable of the bridge through rollers. The uniform force produced by pulling and releasing the pretensioned subwires acts on the bridge as an externalforce. A new device called “the resonance force generator” is also developed to excite the bridges by applying a small force. To verify the proposed concept, a stress ribbon bridge was excited with the resonance force generator.

  17. Numerical study of free-fall arches in hopper flows

    Science.gov (United States)

    Lin, P.; Zhang, S.; Qi, J.; Xing, Y. M.; Yang, L.

    2015-01-01

    Beverloo's law describes the flow rate of grains discharging from hoppers, where the assumption of a free-fall arch (FFA) is very useful in understanding the physical picture of this process. The FFA has been observed in previous experiments but a clear systematic study of the FFA is still necessary. In this paper, dense granular flow in hoppers was studied by numerical simulations, in attempts to explore the free-fall region and its boundary. Generally, the numerical simulation results support the free-fall arch assumption, although the statistical description of the FFA is not exactly equivalent to its strict definition.

  18. La «villa» de San Pedro de Valdanzo (Soria

    Directory of Open Access Journals (Sweden)

    Alfredo JIMENO MARTÍNEZ

    2009-10-01

    Full Text Available Se estudia la «villa» romana de San Pedro de Valdanzo (Soria en su marco ambiental y económico. La excavación permitió detectar un asentamiento rural anterior (S. II-III y descubrir parte de la construcción señorial —dos tramos del corredor, el «oecus» y una segunda estancia—, de los s. IV-V, con mosaicos, en parte quemados y escasos objetos. El estudio integral de las estructuras arquitectónicas y la cultura material se enfoca hacia la interpretación funcional de la zona excavada y a establecer el marco cronológico de este asentamiento. Finalmente se exponen algunas consideraciones sobre las características del poblamiento de los S. IV-V en la zona del Alto Duero.

  19. MarcoPolo-R: Mission and Spacecraft Design

    Science.gov (United States)

    Peacocke, L.; Kemble, S.; Chapuy, M.; Scheer, H.

    2013-09-01

    The MarcoPolo-R mission is a candidate for the European Space Agency's medium-class Cosmic Vision programme, with the aim to obtain a 100 g sample of asteroid surface material and return it safely to the Earth. Astrium is one of two industrial contractors currently studying the mission to Phase A level, and the team has been working on the mission and spacecraft design since January 2012. Asteroids are some of the most primitive bodies in our solar system and are key to understanding the formation of the Earth, Sun and other planetary bodies. A returned sample would allow extensive analyses in the large laboratory-sized instruments here on Earth that are not possible with in-situ instruments. This analysis would also increase our understanding of the composition and structure of asteroids, and aid in plans for asteroid deflection techniques. In addition, the mission would be a valuable precursor for missions such as Mars Sample Return, demonstrating a high speed Earth re-entry and hard landing of an entry capsule. Following extensive mission analysis of both the baseline asteroid target 1996 FG3 and alternatives, a particularly favourable trajectory was found to the asteroid 2008 EV5 resulting in a mission duration of 4.5 to 6 years. In October 2012, the MarcoPolo-R baseline target was changed to 2008 EV5 due to its extremely primitive nature, which may pre-date the Sun. This change has a number of advantages: reduced DeltaV requirements, an orbit with a more benign thermal environment, reduced communications distances, and a reduced complexity propulsion system - all of which simplify the spacecraft design significantly. The single spacecraft would launch between 2022 and 2024 on a Soyuz-Fregat launch vehicle from Kourou. Solar electric propulsion is necessary for the outward and return transfers due to the DeltaV requirements, to minimise propellant mass. Once rendezvous with the asteroid is achieved, an observation campaign will begin to characterise the

  20. Influence of space of double row piles on soil arching effect

    Directory of Open Access Journals (Sweden)

    Zhao bo

    2015-02-01

    Full Text Available FLAC3d software, based on continuous theory, is used to analysis influence of space of double row piles on soil arching effect. The result shows that different from single row pile, double row piles will produce soil arching effect at front pile and rear pile severally, this phenomenon is called multiple soil arching effect; the residual load of front of front row pile will increase,the soil arch zone and the soil arching effect will decrease with the continuous increase of double row pile spacing.At the same time the soil arching effect of rear pile decreases, while the soil arching effect of front pile increases and finally the soil arching effect between front pile and rear pile will be equal.

  1. The surgical importance of an axillary arch in sentinel node biopsy.

    LENUS (Irish Health Repository)

    Ridgway, P F

    2011-03-01

    When Carl Langer described the aberrant axillary arch in 1846 its relevance in sentinel node biopsy (SNB) surgery could not have been contemplated. The authors define an incidence and elucidate relevance of the arch in SNB of the axilla.

  2. Thoracoscopic Resection of a Rare Case of Hemangioma of the Azygos Venous Arch

    Directory of Open Access Journals (Sweden)

    Ma Husai

    2017-01-01

    Full Text Available Hemangioma of the azygos venous arch is an exceedingly rare incident. This is a case of a thoracoscopic complete resection of a hemangioma of the azygos venous arch in a 37-year-old woman.

  3. Reliability and Correlation of Static and Dynamic Foot Arch Measurement in a Healthy Pediatric Population.

    Science.gov (United States)

    Scholz, Timo; Zech, Astrid; Wegscheider, Karl; Lezius, Susanne; Braumann, Klaus-Michael; Sehner, Susanne; Hollander, Karsten

    2017-07-14

    Measurement of the medial longitudinal foot arch in children is a controversial topic, as there are many different methods without a definite standard procedure. The purpose of this study was to 1) investigate intraday and interrater reliability regarding dynamic arch index and static arch height, 2) explore the correlation between both arch indices, and 3) examine the variation of the medial longitudinal arch at two different times of the day. Eighty-six children (mean ± SD age, 8.9 ± 1.9 years) participated in the study. Dynamic footprint data were captured with a pedobarographic platform. For static arch measurements, a specially constructed caliper was used to assess heel-to-toe length and dorsum height. A mixed model was established to determine reliability and variation. Reliability was found to be excellent for the static arch height index in sitting (intraday, 0.90; interrater, 0.80) and standing positions (0.88 and 0.85) and for the dynamic arch index (both 1.00). There was poor correlation between static and dynamic assessment of the medial longitudinal arch (standing dynamic arch index, r = -0.138; sitting dynamic arch index, r = -0.070). Static measurements were found to be significantly influenced by the time of day (P static arch height index is influenced by gender (P = .004), whereas dynamic arch index is influenced by side (P = .011) and body mass index (P static foot measurements are reliable for medial longitudinal foot arch assessment in children. The variation of static arch measurements during the day has to be kept in mind. For clinical purposes, static and dynamic arch data should be interpreted separately.

  4. Repercusiones fiscales del sector informal en San Martin Texmelucan, Puebla

    Directory of Open Access Journals (Sweden)

    Esmeralda Aguilar Pérez

    2012-02-01

    Full Text Available El presente trabajo da a conocer los resultados del estudio realizado en la ciudad de San Martin Texmelucan, Puebla para determinar el impacto en la recaudación fiscal de la economía informal, tomando en cuenta las cifras de INEGI 2010 y el reporte oficial de la Secretaria de Finanzas con respecto a la base de contribuyentes inscritos en los regímenes de: pequeños contribuyentes e Intermedio de las personas físicas con actividades empresariales. En la realización de este estudio se aplicó una encuesta trescientos setenta y siete comerciantes ambulantes del centro de la ciudad, para determinar los ingresos aproximados que generan sus actividades y calcular los impuestos que deberían enterar a la autoridad fiscal si este sector económico estuviera dentro del marco legal tributario vigente que le corresponde.

  5. Acerca de la gestión de la producción científica en las carreras de Lic. en Kinesiología y Fisiatría en el marco institucional de las universidades nacionales

    OpenAIRE

    Álvarez, Javier; Priotti, Mónica; Diodati, Mariano

    2007-01-01

    El presente trabajo se encuadra en un proyecto de investigación en curso a través del cual nos proponemos indagar sobre el contexto de surgimiento de las carreras de Lic. en Kinesiología y Fisiatría en el marco institucional de las universidades nacionales. La carrera de Lic. en Kinesiología y Fisiatría que se dicta en la ciudad de Rosario desde el año 1998, en convenio con la Universidad Nacional de San Martín y la Fundación del Gran Rosario, tiene como preocupaciones centrales la generac...

  6. How to Perfuse: Concepts of Cerebral Protection during Arch Replacement

    Science.gov (United States)

    Habertheuer, Andreas; Wiedemann, Dominik; Kocher, Alfred; Laufer, Guenther; Vallabhajosyula, Prashanth

    2015-01-01

    Arch surgery remains undoubtedly among the most technically and strategically challenging endeavors in cardiovascular surgery. Surgical interventions of thoracic aneurysms involving the aortic arch require complete circulatory arrest in deep hypothermia (DHCA) or elaborate cerebral perfusion strategies with varying degrees of hypothermia to achieve satisfactory protection of the brain from ischemic insults, that is, unilateral/bilateral antegrade cerebral perfusion (ACP) and retrograde cerebral perfusion (RCP). Despite sophisticated and increasingly individualized surgical approaches for complex aortic pathologies, there remains a lack of consensus regarding the optimal method of cerebral protection and circulatory management during the time of arch exclusion. Many recent studies argue in favor of ACP with various degrees of hypothermic arrest during arch reconstruction and its advantages have been widely demonstrated. In fact ACP with more moderate degrees of hypothermia represents a paradigm shift in the cardiac surgery community and is widely adopted as an emergent strategy; however, many centers continue to report good results using other perfusion strategies. Amidst this important discussion we review currently available surgical strategies of cerebral protection management and compare the results of recent European multicenter and single-center data. PMID:26713319

  7. How to Perfuse: Concepts of Cerebral Protection during Arch Replacement

    Directory of Open Access Journals (Sweden)

    Andreas Habertheuer

    2015-01-01

    Full Text Available Arch surgery remains undoubtedly among the most technically and strategically challenging endeavors in cardiovascular surgery. Surgical interventions of thoracic aneurysms involving the aortic arch require complete circulatory arrest in deep hypothermia (DHCA or elaborate cerebral perfusion strategies with varying degrees of hypothermia to achieve satisfactory protection of the brain from ischemic insults, that is, unilateral/bilateral antegrade cerebral perfusion (ACP and retrograde cerebral perfusion (RCP. Despite sophisticated and increasingly individualized surgical approaches for complex aortic pathologies, there remains a lack of consensus regarding the optimal method of cerebral protection and circulatory management during the time of arch exclusion. Many recent studies argue in favor of ACP with various degrees of hypothermic arrest during arch reconstruction and its advantages have been widely demonstrated. In fact ACP with more moderate degrees of hypothermia represents a paradigm shift in the cardiac surgery community and is widely adopted as an emergent strategy; however, many centers continue to report good results using other perfusion strategies. Amidst this important discussion we review currently available surgical strategies of cerebral protection management and compare the results of recent European multicenter and single-center data.

  8. Visualization of soil arching in flexible piled embankments

    Indian Academy of Sciences (India)

    Tuğba Eskışar

    2015-10-01

    Piled embankments rely on soil arching, but, when geogrid reinforcements are used, membrane action within the reinforcement contributes to load distribution. The arching of soil in unreinforced and reinforced piled embankments is evaluated in this study. A small-scale test apparatus is used to model the settlement up to 5 mm in an embankment with four pile elements. Visual inspection of the soil settlement and soil-reinforcement interaction is important to explain the mechanism of arching. In this study, X-ray Computed Tomography (CT) method was used as a non-destructive technique. The arching of soil between the piles was observed in the case of rigid piles and in the case of flexible piles with grid type of reinforcement. The load carrying capacity increased up to 33% in the case of geogrid reinforcement, and the differential settlement decreased around 35%, proving the efficiency of piled embankments with geogrid reinforcements. It is also shown that, using X-ray CT method and visualization techniques provides a better understanding of soil behavior in a reinforced embankment with the flexible pile foundation system.

  9. Do We Often Find ARCH Because Of Neglected Outliers?

    NARCIS (Netherlands)

    Ph.H.B.F. Franses (Philip Hans); D.J.C. van Dijk (Dick)

    1997-01-01

    textabstractIn this paper we test for (Generalized) AutoRegressive Conditional Heteroskedasticity [(G)ARCH] in daily and weekly data on 22 exchange rates and 13 stock market indices using the standard Lagrange Multiplier [LM] test for GARCH and a new LM test that is resistant to additive outliers. T

  10. UNILATERAL INCOMPLETE SUPERFICIAL PALMAR ARCH: A CASE REPORT

    Directory of Open Access Journals (Sweden)

    Subhankar Chakraborty

    2015-12-01

    Full Text Available The functional importance of hand is revealed by its rich vascularity contributed by superficial and deep palmar arches (SPA and DPA.Superficial palmar arch is located superficial to flexor tendons, and deep palmar arch deep to lumbrical muscles. Variations are found more often in SPA than DPA, later being more or less constant. During routine undergraduate dissection, we observed, unilateral incomplete SPA being formed by superficial palmar branches of ulnar and radial artery in the right hand of a male cadaver. These two arteries remained independent without anastomosis forming incomplete arch (SPA.The superficial branch of ulnar artery entered hand superficial to flexor retinaculum and supplied middle, ring and little finger by three branches. The superficial branch of radial artery via its two branches supplied index finger and thumb. Classical SPA formation was seen on left side. The presence of an incomplete SPA as in this case is a potential danger in RA harvesting for CABG.Variations in SPA play a pivotal role in microvascular surgical procedures of hand, RAinterventions and arterial graft applications.

  11. THE ETIOLOGICAL FACTORS INVOLVED IN DENTAL ARCH PERIMETER SHORTENING

    Directory of Open Access Journals (Sweden)

    Liliana Ioana Vâţă

    2012-12-01

    Full Text Available The main purpose of the study was to highlight the causes that may lead to reduction of arches: early loss of deciduous teeth, with consecutive dental drifting on the arch, followed by narrowing of the space necessary for the eruption of successional teeth, caries of the deciduous teeth or ectopic eruption of the first permanent molars. The mesial position of M1 had a frequency of 19.31% of the total number of analysed cases; maximum frequencies have been registered for the localization on the lower arch; M1 ectopia has rarely occurred on the studied batch; the frequency of lateral group mesial position was of 10.34% on the studied batch, registering maximum values for the localisation on the upper arch. The early loss of deciduous teeth was identified in almost 30% of the analysed cases, while the reduction of the space necessary for the eruption of successional teeth was registered in almost 39% of cases, space narrowing resulting both from the caries of deciduous teeth and from their early loss.

  12. Bare Metal Stenting for Endovascular Exclusion of Aortic Arch Thrombi

    Energy Technology Data Exchange (ETDEWEB)

    Mahnken, Andreas H., E-mail: mahnken@med.uni-marburg.de [University Hospital Giessen and Marburg, Philipps University of Marburg, Department of Diagnostic Radiology (Germany); Hoffman, Andras; Autschbach, Ruediger; Damberg, Anneke L. M., E-mail: anneke.damberg@rwth-aachen.de [University Hospital RWTH Aachen, Department of Thoracic, Cardiac and Vascular Surgery (Germany)

    2013-08-01

    BackgroundAortic thrombi in the ascending aorta or aortic arch are rare but are associated with a relevant risk of major stroke or distal embolization. Although stent grafting is commonly used as a treatment option in the descending aorta, only a few case reports discuss stenting of the aortic arch for the treatment of a thrombus. The use of bare metal stents in this setting has not yet been described.MethodsWe report two cases of ascending and aortic arch thrombus that were treated by covering the thrombus with an uncovered stent. Both procedures were performed under local anesthesia via a femoral approach. A femoral cutdown was used in one case, and a total percutaneous insertion was possible in the second case.ResultsBoth procedures were successfully performed without any periprocedural complications. Postoperative recovery was uneventful. In both cases, no late complications or recurrent embolization occurred at midterm follow-up, and control CT angiography at 1 respectively 10 months revealed no stent migration, freely perfused supra-aortic branches, and no thrombus recurrence.ConclusionTreating symptomatic thrombi in the ascending aorta or aortic arch with a bare metal stent is feasible. This technique could constitute a minimally invasive alternative to a surgical intervention or complex endovascular therapy with fenestrated or branched stent grafts.

  13. ArchDB 2014: structural classification of loops in proteins

    Science.gov (United States)

    Bonet, Jaume; Planas-Iglesias, Joan; Garcia-Garcia, Javier; Marín-López, Manuel A.; Fernandez-Fuentes, Narcis; Oliva, Baldo

    2014-01-01

    The function of a protein is determined by its three-dimensional structure, which is formed by regular (i.e. β-strands and α-helices) and non-periodic structural units such as loops. Compared to regular structural elements, non-periodic, non-repetitive conformational units enclose a much higher degree of variability—raising difficulties in the identification of regularities, and yet represent an important part of the structure of a protein. Indeed, loops often play a pivotal role in the function of a protein and different aspects of protein folding and dynamics. Therefore, the structural classification of protein loops is an important subject with clear applications in homology modelling, protein structure prediction, protein design (e.g. enzyme design and catalytic loops) and function prediction. ArchDB, the database presented here (freely available at http://sbi.imim.es/archdb), represents such a resource and has been an important asset for the scientific community throughout the years. In this article, we present a completely reworked and updated version of ArchDB. The new version of ArchDB features a novel, fast and user-friendly web-based interface, and a novel graph-based, computationally efficient, clustering algorithm. The current version of ArchDB classifies 149,134 loops in 5739 classes and 9608 subclasses. PMID:24265221

  14. Right-sided aortic arch with Kommerell′s aneurysm

    Directory of Open Access Journals (Sweden)

    Sanjay Orathi Patangi

    2014-01-01

    Full Text Available We present a case report of a 55-year-old lady who presented with progressive dysphagia and was diagnosed with a Kommerell′s aneurysm and a right-sided aortic arch. This case report outlines our management strategy and the challenges encountered during the perioperative period in a patient with this rare anomaly.

  15. 3D Stretchable Arch Ribbon Array Fabricated via Grayscale Lithography

    Science.gov (United States)

    Pang, Yu; Shu, Yi; Shavezipur, Mohammad; Wang, Xuefeng; Mohammad, Mohammad Ali; Yang, Yi; Zhao, Haiming; Deng, Ningqin; Maboudian, Roya; Ren, Tian-Ling

    2016-01-01

    Microstructures with flexible and stretchable properties display tremendous potential applications including integrated systems, wearable devices and bio-sensor electronics. Hence, it is essential to develop an effective method for fabricating curvilinear and flexural microstructures. Despite significant advances in 2D stretchable inorganic structures, large scale fabrication of unique 3D microstructures at a low cost remains challenging. Here, we demonstrate that the 3D microstructures can be achieved by grayscale lithography to produce a curved photoresist (PR) template, where the PR acts as sacrificial layer to form wavelike arched structures. Using plasma-enhanced chemical vapor deposition (PECVD) process at low temperature, the curved PR topography can be transferred to the silicon dioxide layer. Subsequently, plasma etching can be used to fabricate the arched stripe arrays. The wavelike silicon dioxide arch microstructure exhibits Young modulus and fracture strength of 52 GPa and 300 MPa, respectively. The model of stress distribution inside the microstructure was also established, which compares well with the experimental results. This approach of fabricating a wavelike arch structure may become a promising route to produce a variety of stretchable sensors, actuators and circuits, thus providing unique opportunities for emerging classes of robust 3D integrated systems. PMID:27345766

  16. Dental arch diameters and relationships to oral habits.

    Science.gov (United States)

    Aznar, T; Galán, A F; Marín, I; Domínguez, A

    2006-05-01

    The objective was to analyze variations in dental arch width in relation to oral habits. Maxillary and mandibular intercanine and intermolar distance were determined in relation to certain oral habits in 1297 children (ages 3 to 6 years). After an oral examination, the parents of each child completed a questionnaire about oral habits, including the use of a dummy or a bottle (or both), finger sucking, mouth breathing, breast- or bottle-feeding, and duration of these habits. Data were subjected to statistical analysis by the chi-square test for qualitative variables and analysis of variance for quantitative variables with homogeneous variances. Statistical significance was P habits, the maxillary intercanine distance was less in children who used a dummy, especially one of a round design (P = .003). The maxillary intercanine distance was also less in children who breathed through their mouth (P = .002). In most cases, dummy use and mouth breathing were associated with a reduction in the intercanine distance in the maxillary arch. A dummy habit leads to a reduction in maxillary arch width, and mouth breathing causes a reduction in the size of both arches.

  17. Arch Venture Partners' investment considerations for CBRNE products and opportunities

    Science.gov (United States)

    Crandell, K.; Lazarus, S.; Gardner, P. J.

    2008-04-01

    ARCH is interested in building leading, highly-valued companies from leading research. Toward that end we value innovations created by the leading researchers in the world, many of which are funded to solve critical scientific challenges including those in the instrumentation and CBRNE area. The most important CBRNE innovations we have seen at ARCH are breakthroughs involving significant unaddressed technology risk and have the potential for broad proprietary intellectual property as a result. The model ARCH has evolved in instrumentation is to look for a breakthrough innovation, with strong intellectual property and continue to strengthen the patent estate through the life of the company. ARCH looks to build companies around leading interdisciplinary scientific and engineering teams, and we favor platform technology that can be applied to multiple market applications both commercial and government. As part of a strategy to build a great company, addressing important CBRNE challenges can help a company strengthen its technical team and its IP estate. This supports a focus on early low volume markets on the way toward addressing a fuller portfolio of applications. Experienced Venture Capitalists can help this process by identifying important executive talent, partners and applications, offering financial syndication strength, and helping shape the company's strategy to maximize the ultimate value realized.

  18. File list: ALL.Emb.50.AllAg.Maxillary_arch_junction [Chip-atlas[Archive

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  4. El teatro im/posible en TV de Marco Paolini

    Directory of Open Access Journals (Sweden)

    Massimo Puliani

    2016-01-01

    Full Text Available En el contexto cultural italiano, la comercializacion de obras de teatro ha dejado de ser un producto orientado a un consumidor concreto para transformarse en muchos casos en un producto de largo consumo. De hecho, en las últimas décadas cadenas de televisión, editoriales, revistas especializadas y medios de comunicación escritos han estado editando y comercializando obras de teatro de manera satisfactoria y con una notable acogida de público y crítica. En este sentido, la obra editada y comercializada de Marco Paolini ha tenido (y tiene un papel fundamental. La edición televisada de espectáculos como Il racconto del Vajont, Miserabili, Il Milione o Ausmerzen. Vite indegne di essere vissute, son ejemplo de como un espectáculo teatral puede perfectamente tener cabida en un contexto televisivo, además de poder entenderse como un inestimable punto de partida para una reflexión sobre las posibilidades que ofrece la adaptación a un medio televisado.

  5. Hacia un marco conceptual para repensar la accesibilidad cultural

    Directory of Open Access Journals (Sweden)

    Fernando Landini

    2014-02-01

    Full Text Available La accesibilidad de la población al sistema de salud constituye una de las principales preocupaciones de las políticas sanitarias. No obstante, son pocos los trabajos que profundizan conceptualmente en dicha noción. La mayor parte de ellos diferencia entre disponibilidad, accesibilidad y aceptabilidad, o entre accesibilidad geográfica, financiera, administrativa y cultural. En el presente trabajo se discute y analiza la noción de accesibilidad, definiéndosela como un proceso de articulación conflictiva entre demanda y oferta en salud. A la vez, se focaliza en la noción de accesibilidad cultural, la cual es repensada como una interfaz social, es decir, como un espacio conflictivo en el que se articulan marcos de sentido diferentes, en este caso el de los profesionales y el de los pacientes. Esto permite abordar los procesos complejos de apropiación, traducción y reconfiguración de los conocimientos y recomendaciones que se dan en este vínculo.

  6. Los materiales del nivel Musteriense de la Cueva de Belda (Cuevas de San Marcos, Málaga

    Directory of Open Access Journals (Sweden)

    Julián RAMOS FERNÁNDEZ

    2009-10-01

    Full Text Available En 1979 se llevó a cabo en la cueva de Belda una excavación por un equipo de arqueólogos, entre cuyos miembros me encontraba, y gran parte de este artículo se debe a su esfuerzo, por lo que les doy las gracias. La excavación se presentó desde el principio problemática, a causa de los continuos saqueos de que había sido objeto el yacimiento, durante un largo período de tiempo. El resultado de esta destrucción sistemática fue, que nos encontramos los sedimentos arqueológicos completamente destruidos excepto una pequeña parcela, que había sido protegida por una gruesa capa estalagmítica, y que era el único sedimento intacto que detectamos en toda la cueva.

  7. THE FACULTY OF COUNTABLE SCIENCES OF THE NATIONAL MAJOR UNIVERSITY SAN MARCOS AGAINST THE CYBER-PLAGIARISM

    OpenAIRE

    Pastor Carrasco, Carlos Alberto; Facultad de Ciencias Contables, Universidad Nacional Mayor de San Marcos

    2014-01-01

    The present article intends to browse the abduction in general, in its pouring double: one for the fraudulent conversion and (against the author of the pirated work) another for the realized (regarding the addressees of the realized work with abduction) fraud. With these premises the academic defined ciber-plagio is analyzed as an abduction form carried out with the help of electronic available tools in the university environment. It is also sought: a) to Scan the nature of the online...

  8. The motivation of profits and the self concept in students of the greater national University of San Marcos

    OpenAIRE

    Vicuña Peri, Luis; Facultad de Psicología, Universidad Nacional Mayor de San Marcos, Lima, Perú; Hernández Valz, Héctor; Facultad de Psicología, Universidad Nacional Mayor de San Marcos, Lima, Perú; Ríos Díaz, José; Facultad de Psicología, Universidad Nacional Mayor de San Marcos, Lima, Perú

    2014-01-01

    OBJECTIVE: To identify the relation between autoconcepto with the types of motivation proposed by Mc Clelland: to be able, affiliation and profit. Also to find out the paper that fulfHls the academic yield and sex on the selfsteem. To identify the paper that fulfills the academic yield and sex on the components of the motivation: affiliation, power and I obtain. DESIGN: The present investigation is corelational and descriptive. MATERIAL And METHODS: Working with a sample of 768 students, with...

  9. CREATIVITY METHODS IN TEACHING THE ARCH-DESIGN STUDIO

    Directory of Open Access Journals (Sweden)

    EIGBEONAN Andrew B.

    2013-07-01

    Full Text Available The aim of this paper is to search and find methods of fostering creativity or ideas relating to creativity in teaching the arch-design studio. Teaching creativity through its methods will be making the students grounded in designing with creativity ideas and therefore we can have professionals that design and build with satisfaction, safety and complementary. It means we can have real buildings and places that satisfy our clients, the society and in harmony with the environment. Although there are similarities in the curricula of training architects all over the world, but educators go about it in their own convenient and suitable ways and styles. The ideas of creativity have been part of architecture from the onset, but are not deligently applied and also not formally incorporated in the curricula of training. The topic is also very relevant and timely as arch-educators and other stakeholders are of the opinion that something has to be done to improve the ways and methods of training architects, especially the teaching of the arch-design studio with regards to creativity. Through exploration of literature and interviews (physical and telephone call this paper finds methods of stimulating creativity ideas in the teaching of arch-design studio. Some of the methods of motivating creativity found in teaching the arch-design studio are: analogy, metaphors, biomimicry, brainstorming, attribute listing, mental map, TRIZ, restrictions, charrette, browsing, excursions, focus groups, other peoples viewpoints, using crazy ideas, using experts, visualizing a goal, working with dreams and images and giving students design tools such as drawings CAD and model making.

  10. 75 FR 55975 - Safety Zone; San Diego Harbor Shark Fest Swim; San Diego Bay, San Diego, CA

    Science.gov (United States)

    2010-09-15

    ... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Safety Zone; San Diego Harbor Shark Fest Swim; San Diego Bay, San Diego, CA AGENCY: Coast Guard, DHS. ACTION: Temporary final rule. SUMMARY: The Coast Guard is establishing a temporary safety zone upon the navigable waters of the San Diego Bay, San Diego, CA, in support...

  11. Lucy's flat feet: the relationship between the ankle and rearfoot arching in early hominins.

    Directory of Open Access Journals (Sweden)

    Jeremy M DeSilva

    Full Text Available BACKGROUND: In the Plio-Pleistocene, the hominin foot evolved from a grasping appendage to a stiff, propulsive lever. Central to this transition was the development of the longitudinal arch, a structure that helps store elastic energy and stiffen the foot during bipedal locomotion. Direct evidence for arch evolution, however, has been somewhat elusive given the failure of soft-tissue to fossilize. Paleoanthropologists have relied on footprints and bony correlates of arch development, though little consensus has emerged as to when the arch evolved. METHODOLOGY/PRINCIPAL FINDINGS: Here, we present evidence from radiographs of modern humans (n = 261 that the set of the distal tibia in the sagittal plane, henceforth referred to as the tibial arch angle, is related to rearfoot arching. Non-human primates have a posteriorly directed tibial arch angle, while most humans have an anteriorly directed tibial arch angle. Those humans with a posteriorly directed tibial arch angle (8% have significantly lower talocalcaneal and talar declination angles, both measures of an asymptomatic flatfoot. Application of these results to the hominin fossil record reveals that a well developed rearfoot arch had evolved in Australopithecus afarensis. However, as in humans today, Australopithecus populations exhibited individual variation in foot morphology and arch development, and "Lucy" (A.L. 288-1, a 3.18 Myr-old female Australopithecus, likely possessed asymptomatic flat feet. Additional distal tibiae from the Plio-Pleistocene show variation in tibial arch angles, including two early Homo tibiae that also have slightly posteriorly directed tibial arch angles. CONCLUSIONS/SIGNIFICANCE: This study finds that the rearfoot arch was present in the genus Australopithecus. However, the female Australopithecus afarensis "Lucy" has an ankle morphology consistent with non-pathological flat-footedness. This study suggests that, as in humans today, there was variation in arch

  12. Sustentabilidad del sistema de papel amate en San Pablito, Pahuatlán, Puebla.

    OpenAIRE

    Fuentes Castillo, María Janet

    2014-01-01

    La investigación expone el nivel de sustentabilidad en que se encuentra el sistema de producción de papel amate en San Pablito, Pahuatlán, Puebla; se fundamenta en la teoría del desarrollo sustentable. La metodología utilizada en la investigación es mixta (cuantitativa y cualitativa). Los datos se obtuvieron a través de un cuestionario aplicado a 76 familias artesanas; se utilizaron técnicas de observación y observación participante; además el Marco para la Evaluación de Sistemas de Manejo de...

  13. El espacio funerario de La Noria, Tamtok, San Luis Potosí

    OpenAIRE

    Barrientos Juárez, Isaac; Ruíz Albarrán, Perla del Carmen

    2015-01-01

    En el marco del proyecto Origen y desarrollo del paisaje urbano de Tamtok, San Luis Potosí, iniciado en 2008, se ha generado una línea de investigación enfocada en el tratamiento funerario de un conjunto de enterramientos ubicado en el sector noroeste del sitio, perteneciente al periodo posclásico tardío. El presente texto muestra el análisis de algunos componentes que permiten dilucidar el tratamiento mortuorio del conjunto. Aquí se estudia, entre otros, los tipos de depósito, la disposición...

  14. Correlation between arch form and facial form: A cross sectional study

    Directory of Open Access Journals (Sweden)

    Sanjna Nayar

    2015-01-01

    Full Text Available Arch form is a key determinant in teeth position. Teeth selection and placement must be based on the functional and esthetic needs of the patient. Keeping in mind, the biomechanics involved with the prosthesis. The aim of the study was to evaluate the correlation between arch form and facial form. About 40 individuals in the age group of 20-25 years were involved in the study. The arch form and facial form were analyzed statistically to check for any correlation. It was found that, 63.63% of leptoprosophic individuals had squarish arch form while, 54.6% of mesoprosophic faces had ovoid arch form.

  15. The effect of clinical use and sterilization on selected orthodontic arch wires.

    Science.gov (United States)

    Smith, G A; von Fraunhofer, J A; Casey, G R

    1992-08-01

    The effect of clinical use and various sterilization/disinfection protocols on three types of nickel-titanium, and one type each of beta-titanium and stainless steel arch wire was evaluated. The sterilization/disinfection procedures included disinfection alone or in concert with steam autoclave, dry heat, or cold solution sterilization. No clinically significant differences were found between new and used arch wires. The direction of load application to the arch wire and the particular segment of arch wire tested was found to cause substantial differences in generated loads for certain arch wire types.

  16. De la minus-valia a la diversidad funcional: un nuevo marco teorico-metodologico

    National Research Council Canada - National Science Library

    Ferreira, Miguel A.V

    2010-01-01

    En el presente texto, a partir de las propuestas del modelo social de la discapacidad, se propone un marco teorico que pretende abrir una via de investigacion que vaya mas alla de sus propuestas iniciales...

  17. Marco historico y estado del arte de los modelos de evolucion del paisaje y de erosion

    National Research Council Canada - National Science Library

    Montoya Monsalve, Juan Jose

    2009-01-01

    Se presenta un analisis del marco historico de modelos de evolucion del paisaje y de erosion, ademas se expone el estado del arte de cuyo analisis se derivan los aspectos fundamentales que deben ser...

  18. Kinkaleri : teater peab tekitama küsimuse, mitte andma vastuse / Marco Mazzoni ; interv. Andres Keil

    Index Scriptorium Estoniae

    Mazzoni, Marco

    2008-01-01

    1995. a. Itaalias asutatud kuuest kunstnikust - Matteo Bambi, Luca Camilletti, Massimo Conti, Marco Mazzoni, Gina Monaco ja Cristina Rizzo - koosnevast eksperimentaalteatrist Kinkaleri ja Kanuti Gildi saalis 7. ja 8. nov. esiettekandele tulevast lavastusest "Yes, Sir!"

  19. Kinkaleri : teater peab tekitama küsimuse, mitte andma vastuse / Marco Mazzoni ; interv. Andres Keil

    Index Scriptorium Estoniae

    Mazzoni, Marco

    2008-01-01

    1995. a. Itaalias asutatud kuuest kunstnikust - Matteo Bambi, Luca Camilletti, Massimo Conti, Marco Mazzoni, Gina Monaco ja Cristina Rizzo - koosnevast eksperimentaalteatrist Kinkaleri ja Kanuti Gildi saalis 7. ja 8. nov. esiettekandele tulevast lavastusest "Yes, Sir!"

  20. Structure and mechanics of the San Andreas-San Gregorio fault junction, San Francisco, California

    Science.gov (United States)

    Parsons, Tom; Bruns, Terry R.; Sliter, Ray

    2005-01-01

    The right-lateral San Gregorio and San Andreas faults meet west of the Golden Gate near San Francisco. Coincident seismic reflection and refraction profiling across the San Gregorio and San Andreas faults south of their junction shows the crust between them to have formed shallow extensional basins that are dissected by parallel strike-slip faults. We employ a regional finite element model to investigate the long-term consequences of the fault geometry. Over the course of 2-3 m.y. of slip on the San Andreas-San Gregorio fault system, elongated extensional basins are predicted to form between the two faults. An additional consequence of the fault geometry is that the San Andreas fault is expected to have migrated eastward relative to the San Gregorio fault. We thus propose a model of eastward stepping right-lateral fault formation to explain the observed multiple fault strands and depositional basins. The current manifestation of this process might be the observed transfer of slip from the San Andreas fault east to the Golden Gate fault.

  1. An Analytical Solution for Lateral Buckling Critical Load Calculation of Leaning-Type Arch Bridge

    Directory of Open Access Journals (Sweden)

    Ai-rong Liu

    2014-01-01

    Full Text Available An analytical solution for lateral buckling critical load of leaning-type arch bridge was presented in this paper. New tangential and radial buckling models of the transverse brace between the main and stable arch ribs are established. Based on the Ritz method, the analytical solution for lateral buckling critical load of the leaning-type arch bridge with different central angles of main arch ribs and leaning arch ribs under different boundary conditions is derived for the first time. Comparison between the analytical results and the FEM calculated results shows that the analytical solution presented in this paper is sufficiently accurate. The parametric analysis results show that the lateral buckling critical load of the arch bridge with fixed boundary conditions is about 1.14 to 1.16 times as large as that of the arch bridge with hinged boundary condition. The lateral buckling critical load increases by approximately 31.5% to 41.2% when stable arch ribs are added, and the critical load increases as the inclined angle of stable arch rib increases. The differences in the center angles of the main arch rib and the stable arch rib have little effect on the lateral buckling critical load.

  2. Super-light pearl-chain arch vaults

    DEFF Research Database (Denmark)

    Hertz, Kristian Dahl; Halding, Philip Skov

    2014-01-01

    in the vault. This means that the structure can sustain 4 hours standard fire. That it has a very high level of sound insulation, efficient sound damping properties, optimized production, a low production of CO2 that has already given rise to several awards, and easy transport of plane elements instead of what......Arch vaults are known as optimal and impressive structures, but due to their curved shapes they are extremely costly to produce in countries, where the cost of labor is high. By means of super-light pearl-chain technology arch vaults can be constructed from equal plane prefabricated elements, which...... are assembled on the erection site by means of post-tensioning and lifted in place in buildings and bridges. The super-light SL-deck element is developed by the company Abeo Ltd and The Technical University of Denmark for plane floor structures in buildings. However, this deck element is designed in such a way...

  3. Antenatal evaluation of fetal interrupted aortic arch type B

    Directory of Open Access Journals (Sweden)

    Ali Babacan

    2015-06-01

    Full Text Available Interruption of the aortic arch (IAA is a rare, severe form of congenital heart defect characterized by complete anatomical discontinuity between two adjacent segments of the aortic arch. The data on the features and outcomes of fetal IAA are limited. Three anatomical types have been described according to the site of interruption. The current recommendations for screening on the obstetric fetal anomaly scan include identification of a 4-chamber view, all 4 valves, and the outflow tracts, all of which can appear to be normal to the ultrasonographer in fetuses with conotruncal anomalies. Although the identification of IAA on a prenatal echocardiogram can be challenging, a number of anatomic features can facilitate the diagnosis. We aim to present the features and outcome of a case of IAA type B referred to our centre in the light of literatures.

  4. Primer reporte de Postharmostomum sp. (Witenberg, 1923 (Trematoda, Brachylaemidae para Megalobulimus maximus (Gasteropoda, Megalobulimidae en San Martín, Perú

    Directory of Open Access Journals (Sweden)

    Lidia Sánchez

    2013-05-01

    Full Text Available Se colectaron 227 parásitos en estadío juvenil correspondientes al género Postharmostomum sp., Witenberg, 1923 (Trematoda: Digenea, localizados en la cavidad pericárdica de dos individuos del caracol terrestre Megalobulimus maximus colectados en el distrito de Juanjui, departamento de San Martín, Perú. Los ejemplares fueron depositados en la Colección Helmintológica y de Invertebrados Relacionados del Departamento de Protozoología Helmintología e Invertebrados Afines del Museo de Historia Natural de la Universidad Nacional Mayor de San Marcos (MUSM, Lima, Perú.

  5. San Cástulo

    OpenAIRE

    Jaramillo, Tania

    2014-01-01

    Porque no te acercas y nos entendemos, nos vamos cayendo por el lucro de la colonia, nos perdemos en la esquina de san Cástulo y nos vamos volando a Eleuterio, en una noche, que la luna nos vigile, que nos aguarde, que retrase el día, y la gente permanezca dormida o despierta pero temerosa de la noche, de los policías y los delincuentes, de los violadores y de nosotros, de la vida nocturna, de ese lugar oscuro en alguna parte, donde nos convertimos y aullamos.

  6. San Cástulo

    OpenAIRE

    Jaramillo, Tania

    2014-01-01

    Porque no te acercas y nos entendemos, nos vamos cayendo por el lucro de la colonia, nos perdemos en la esquina de san Cástulo y nos vamos volando a Eleuterio, en una noche, que la luna nos vigile, que nos aguarde, que retrase el día, y la gente permanezca dormida o despierta pero temerosa de la noche, de los policías y los delincuentes, de los violadores y de nosotros, de la vida nocturna, de ese lugar oscuro en alguna parte, donde nos convertimos y aullamos.

  7. Coma blisters sans coma.

    Science.gov (United States)

    Heinisch, Silke; Loosemore, Michael; Cusack, Carrie A; Allen, Herbert B

    2012-09-01

    Coma blisters (CBs) are self-limited lesions that occur in regions of pressure during unconscious states classically induced by barbiturates. We report a case of CBs sans coma that were histologically confirmed in a 41-year-old woman who developed multiple tense abdominal bullae with surrounding erythema following a transatlantic flight. Interestingly, the patient was fully conscious and denied medication use or history of medical conditions. A clinical diagnosis of CBs was confirmed by histopathologic findings of eccrine gland necrosis, a hallmark of these bulIous lesions.

  8. Hemiarthroplasty for proximal humeral fracture: restoration of the Gothic arch.

    Science.gov (United States)

    Krishnan, Sumant G; Bennion, Phillip W; Reineck, John R; Burkhead, Wayne Z

    2008-10-01

    Proximal humerus fractures are the most common fractures of the shoulder girdle, and initial management of these injuries often determines final outcome. When arthroplasty is used to manage proximal humeral fractures, surgery remains technically demanding, and outcomes have been unpredictable. Recent advances in both technique and prosthetic implants have led to more successful and reproducible results. Key technical points include restoration of the Gothic arch, anatomic tuberosity reconstruction, and minimal soft tissue dissection.

  9. Double arch mirror study. Part 3: Fabrication and test report

    Science.gov (United States)

    Vukobratovich, D.; Hillman, D.

    1983-01-01

    A method of mounting a cryogenically cooled, lightweight, double arch, glass mirror was developed for infrared, astronomical telescopes such as the Space Infrared Telescope Facility (SIRTF). A 50 cm, fused silica mirror which was previously fabricated was modified for use with a new mount configuration. This mount concept was developed. The modification of the mirror, the fabrication of the mirror mount, and the room temperature testing of the mounted mirror are reported. A design for a SIRTF class primary mirror is suggested.

  10. Right cervical aortic arch with aberrant left subclavian artery.

    Science.gov (United States)

    Tjang, Yanto S; Aramendi, José I; Crespo, Alejandro; Hamzeh, Gadah; Voces, Roberto; Rodríguez, Miguel A

    2008-08-01

    The combination of right cervical aortic arch, aberrant retroesophageal left subclavian artery originating from a Kommerell's diverticulum, and a ligamentum arteriosum, constitutes a rare form of vascular ring. Two patients aged 21 days and 54 years, who were diagnosed by multislice 3-dimensional computed tomography and magnetic resonance imaging, underwent surgical division of a vascular ring. The adult required resection of a Kommerell's aneurysm and subclavian artery reimplantation.

  11. Congenital absence of the atlas posterior arch. A case report.

    Science.gov (United States)

    Huggare, J

    1995-02-01

    A report of a healthy young adult woman with non-pathological congenital absence of the lateral and posterior parts of the atlas is presented. This occurred in association with a steep mandibular plane angle and an extremely obtuse gonial angle. Similar facial features are common in females with hypoplastic dorsal arches, and this case illustrates the intimate developmental association between the upper part of the cervical spine and the craniofacial complex.

  12. Eine Archäologie spiritueller Gotteserfahrung im christlichen Mittelalter

    Directory of Open Access Journals (Sweden)

    Wolfram Bergande

    2008-03-01

    Full Text Available Die Autorin vergleicht die christliche Praktik des so genannten „Genießens Gottes“ bei Bernhard von Clairvaux und Hildegard von Bingen mit dem Ziel einer Archäologie des Genießens in der Mystik des 12. bis 14. Jahrhunderts. Ihr lesenswerter Vergleich zwischen den beiden Klerikern ist kulturgeschichtlich fundiert, medienwissenschaftlich kenntnisreich und anschlussfähig für Philosophen, Historiker, Religionssoziologen und Theologen.

  13. Las fiestas populares de San Pacho en Quibdó (Chocó, Colombia como herramienta de organización comunitaria

    Directory of Open Access Journals (Sweden)

    Natalia Alzate Michaels

    2010-10-01

    como las chirimías, por ejemplo. Este artículo muestra el papel de las fiestas en honor a San Francisco de Asís, donde se promueven y construyen organizaciones comunitarias, y se reflejan procesos de solidaridad, responsabilidad y resistencia. Estos fortalecen la identidad cultural, en el marco de las problemáticas que enfrenta la población del Chocó.

  14. Modelling autogenous expansion for magnesia concrete in arch dams

    Institute of Scientific and Technical Information of China (English)

    Feng JIN; Guoxin ZHANG; Xiaoqing LUO; Chuhan ZHANG

    2008-01-01

    Magnesia Concrete is a kind of expansive con-crete used in Chinese hydraulic engineering more and more widely. To evaluate the effects of autogenous expan-sion on the stresses of arch dams, a simple model of auto-genous expansion for Magnesia Concrete in dam engineering is presented. This model is based on three assumptions: 1) the total amount of autogenous expan-sion of Magnesia Concrete is related only to the properties of materials and mixing of concrete; 2) the autogenous expansion of Magnesia Concrete is irreversible due to the irreversibility of hydration reaction of Magnesia in the concrete; 3) the autogenous expansion strain rates of Magnesia Concrete bear a relation between temperature and residual Magnesia per unit volume of concrete. The model is verified by some experimental data of autogen-ous expansion of Magnesia Concrete and field-measured data of an arch dam in China. Embedded into finite ele-ment arch dam simulation software, this model is employed to simulate the effects of autogenous expansion of Magnesia Concrete in hydraulic engineering.

  15. Space maintainer effects on intercanine arch width and length.

    Science.gov (United States)

    Dincer, M; Haydar, S; Unsal, B; Turk, T

    1996-01-01

    In order to investigate the effects of space maintainers in intercanine arch width and length, twenty cases, characterized with the early loss of mandibular primary molars were selected and divided into two groups. The treatment group used removable space maintainers, while the other ten cases served as the control group. The first dental casts of the treatment and control groups were obtained when the primary canines were in the mouth. After the eruption of permanent canines second dental casts were obtained in both groups. Six measurements were made on the dental casts of each patient. No parameter was found to be statistically significant in the treatment group. In the control group the increase in intercanine arch width and perimeter were found to be statistically significant. Also the increase at the buccal and lingual bone measurements were found to be statistically significant. These results showed that space maintainers might cease the increase in intercanine arch width and length during the transition period between the primary and permanent canines.

  16. ON THE CYTOTOXICITY OF ORTHODONTIC ARCHES IN HUMAN FIBROBLAST CULTURES

    Directory of Open Access Journals (Sweden)

    Liliana-Gabriela HALIŢCHI

    2015-12-01

    Full Text Available The present study analyzes the orthodontic nickel-titanium alloy with orthodontic shape memory (Niti GAC arches, Nitinol 3M arches, Beta Titanium 3M arches from the viewpoint of its cytotoxicity. Apart from the intrinsic toxicity of the metals upon cells, corrosion may dramatically alter the behaviour of alloys, as evidenced by the in vitro and in vivo studies developed in the field. Due to the high and variable nickel content, its is possible that, at least theoretically, the released ions should produce – as a result of intraoral corrosion – secondary effects, which makes necessary to assert the cytotoxicity of NiTi alloys prior to their safe utilizationor in the oral cavity of children and young patients. Evaluation of cell morphology and determination of cell viability, following exposure to the 3 types of orthodontic materials, evidenced no toxic reactions. Several problems are still to be elucidated, related to the consequences of the surface conditions, of the dissolution and in vivo release of the nickel ions after a longer treatment, of the accumulations of ion traces, of the response of the dental-periodontal tissues, of the effects manifested at cell and molecular level. Apart from the intrisic toxicity of metals upon cells, corrosion may dramatically influence the behaviour of alloys under in vitro conditions, comparatively with the in vivo ones, the nitinol samples being biologically safe.

  17. C-arm guided closed reduction of zygomatic arch fracture

    Energy Technology Data Exchange (ETDEWEB)

    Eo, Yoon Ki; Lee, Dong Kun [College of Medicine, Wonkwang Univ., Iksan (Korea, Republic of); Kim, Jeong Sam; Jang, Young Il [Kwangyang College, Kwangyang (Korea, Republic of)

    1999-04-01

    The zygomatic arch is structurally protruded and is easily fractured. The classic management of zygomatic arch fracture has been mentioned the Keen, Lothrop, Dingman and Alling and threaded K-wire. All of the above methods have advantages and disadvantages. To minimize the disadvantages, we performed threaded K-wire for the first time using C-arm image intensifier. The subjects were 16 patients with Knight North group II (Zygomatic arch fracture). Among them the C-arm was used in 12 patients and the operator used sensitivity general method in 4 patients and confirmed the operation by mobile X-ray equipment. In conclusion, both groups were satisfied surgically and cosmetically. Using the C-arm, actual image at the time operation was clear and satisfied, the surrounding tissue damage was minimized and at was more accurately completed. The operation time was shortened by 30 to 60 minutes proving it to be an efficient method. We suggest though that further studies be needed to evaluate the radiation effect on these patients.

  18. First and second branchial arch syndromes: multimodality approach

    Energy Technology Data Exchange (ETDEWEB)

    Senggen, Elodie; Laswed, Tarek; Meuwly, Jean-Yves; Maestre, Leonor Alamo; Meuli, Reto; Gudinchet, Francois [University Hospital of Lausanne, Radiology Department, Lausanne (Switzerland); Jaques, Bertrand [University Hospital of Lausanne, Department of Otorhinolaryngology, Lausanne (Switzerland)

    2011-05-15

    First and second branchial arch syndromes (BAS) manifest as combined tissue deficiencies and hypoplasias of the face, external ear, middle ear and maxillary and mandibular arches. They represent the second most common craniofacial malformation after cleft lip and palate. Extended knowledge of the embryology and anatomy of each branchial arch derivative is mandatory for the diagnosis and grading of different BAS lesions and in the follow-up of postoperative patients. In recent years, many new complex surgical approaches and procedures have been designed by maxillofacial surgeons to treat extensive maxillary, mandibular and external and internal ear deformations. The purpose of this review is to evaluate the role of different imaging modalities (orthopantomogram (OPG), lateral and posteroanterior cephalometric radiographs, CT and MRI) in the diagnosis of a wide spectrum of first and second BAS, including hemifacial microsomia, mandibulofacial dysostosis, branchio-oto-renal syndrome, Pierre Robin sequence and Nager acrofacial dysostosis. Additionally, we aim to emphasize the importance of the systematic use of a multimodality imaging approach to facilitate the precise grading of these syndromes, as well as the preoperative planning of different reconstructive surgical procedures and their follow-up during treatment. (orig.)

  19. San Diego's Capital Planning Process

    Science.gov (United States)

    Lytton, Michael

    2009-01-01

    This article describes San Diego's capital planning process. As part of its capital planning process, the San Diego Unified School District has developed a systematic analysis of functional quality at each of its school sites. The advantage of this approach is that it seeks to develop and apply quantifiable metrics and standards for the more…

  20. Los Angeles og San Francisco

    DEFF Research Database (Denmark)

    Ørstrup, Finn Rude

    1998-01-01

    Kompendium udarbejdet til en studierejse til Los Angeles og San Francisco april-maj 1998 Kunstakademiets Arkitektskole, Institut 3H......Kompendium udarbejdet til en studierejse til Los Angeles og San Francisco april-maj 1998 Kunstakademiets Arkitektskole, Institut 3H...

  1. Mechanics Evolution Characteristics Analysis of Pressure-arch in Fully-mechanized Mining Field

    Directory of Open Access Journals (Sweden)

    S.R. Wang

    2014-09-01

    Full Text Available Based on a practical engineering, the three-dimension computational model was built using FLAC3D under the fullymechanized mining condition. Considering four variation factors, such as the distance of mining advancing, the strength of the surrounding rock, the speed of mining advancing and the dip angle of the coal seam, the mechanics evolution characteristics of the pressure-arch were analyzed. The result showed that for the horizontal seam, the geometric shape of the pressure-arch varied from flat arch to round arch gradually and the height and thickness of the pressure-arch also increased; the maximum principal stress in the skewback also increased with the working face advancing. With the strength of the surrounding rock from soft to hard, the arch thickness reduced, and the arch loading decreased. To improve the mining speed can do some contributions to the stability of the pressure-arch in the mining field. With the increase of dip angle of the seam, the pressure-arch displayed an asymmetric shape, the vault was tilted and moved to the upward direction. At the same time, the thickness of the pressure-arch increased, and the stress concentration in the skewback tended to be further intensified.

  2. Effect of aging on the configurational change of the aortic arch

    Directory of Open Access Journals (Sweden)

    Atsuhiro Kojima

    2016-04-01

    Full Text Available We explored the relationship between aging and the configuration of the aortic arch using computed tomography angiography (CTA. We retrospectively reviewed CTA obtained in 140 cases. The configuration of the aortic arch was categorized into three types based on the criteria mentioned by Madhwal et al., and the relationships between each configuration and patient characteristics were analyzed. Anomalies of the aortic arch were also explored. Twenty patients had a type-1 aortic arch (mean age, 56.1 years, 30 patients had a type-2 aortic arch (mean age, 66.3 years, and 89 patients had a type-3 aortic arch (mean age, 71.7 years. The mean age of patients with a type-3 aortic arch was significantly higher than that of patients with a type-1 aortic arch. No significant correlations between the type of aortic arch and other factors, such as smoking habit, were seen. The configuration of the aortic arch in our study appears to be significantly affected by the age of the patients.

  3. CORRELATION BETWEEN DURATION OF BOTTLE-FEEDING AND DENTAL ARCH MEASUREMENT IN DECIDUOUS DENTITION

    Directory of Open Access Journals (Sweden)

    Meldo Mahniza

    2015-06-01

    Full Text Available The purpose of this study was to observe the correlation between duration of bottle feeding and dental arch measurement in deciduous dentition. Duration of bottle feeding was divided into 4 groups: ≤ 24 months, 25 – 36 months, 37 – 48 months, and > 48 months. The subjects were 120 kindergarten pupils, aged 3 – 5 years old. Measurements was done on the models of maxilla and mandible with digital caliper for the width and length of dental arch and using flexible curve for dental arch circumference. Pearson correlation showed a weak association for anterior arch width (r=0.206, posterior arch width (r=0.195, and anterior circumference (r=0.206 of maxilla and posterior arch width (r=0.279, anterior circumference (r=0.226 of mandible. One-way Anova was performed to analyze the differences of dental arch measurements among duration of bottle-feeding groups. The results showed that there were significant differences of dental arch measurements for anterior arch width of maxilla, posterior arch width of mandible, and anterior circumference of mandible (p<0,05.

  4. The Foot’s Arch and the Energetics of Human Locomotion

    Science.gov (United States)

    Stearne, Sarah M.; McDonald, Kirsty A.; Alderson, Jacqueline A.; North, Ian; Oxnard, Charles E.; Rubenson, Jonas

    2016-01-01

    The energy-sparing spring theory of the foot’s arch has become central to interpretations of the foot’s mechanical function and evolution. Using a novel insole technique that restricted compression of the foot’s longitudinal arch, this study provides the first direct evidence that arch compression/recoil during locomotion contributes to lowering energy cost. Restricting arch compression near maximally (~80%) during moderate-speed (2.7 ms−1) level running increased metabolic cost by + 6.0% (p < 0.001, d = 0.67; unaffected by foot strike technique). A simple model shows that the metabolic energy saved by the arch is largely explained by the passive-elastic work it supplies that would otherwise be done by active muscle. Both experimental and model data confirm that it is the end-range of arch compression that dictates the energy-saving role of the arch. Restricting arch compression had no effect on the cost of walking or incline running (3°), commensurate with the smaller role of passive-elastic mechanics in these gaits. These findings substantiate the elastic energy-saving role of the longitudinal arch during running, and suggest that arch supports used in some footwear and orthotics may increase the cost of running. PMID:26783259

  5. A STUDY ON SUPERFICIAL PALMAR ARCH AND IT’S VARIATIONS

    Directory of Open Access Journals (Sweden)

    Venkateswara Rao

    2015-03-01

    Full Text Available INTRODUCTION: Knowledge of the frequency of anatomical variations of arterial pattern of hand is crucial for safe and successful hand surgical approach, diagnostic and therapeutic procedures. The superficial pal mar arch is a major blood supply to the hand. Various ano malous patterns in the superficial arch of hand are reported. The superficial pal mar arch is formed predominantly by ulnar artery with a contribution from superficial branch of radial artery. OBSERVATIONS: Superficial palmar arch is dissected within the p alm and observed from its origin to termination. Variations in its origin, branches were observed. A classic superficial palmar arch was found in 10% [5/50]. O ut of dissected specimens complete arch found in 67% and incomplete arch was 33%. Incomplete arch is formed by ulnar artery alone. It supply four and half fingers and give five branches. Majority of arches is supplied by three and half fingers and gives four branches. DISCUSSION: Many attempts have been made to classify these variations. A complex cla ssification of superficial pal mar arch by Coleman & Anson [1961]. S ince then, many other classification have been suggested by different authors [Karlsson & N iechajev, 1982; al - Turk & Metcalf, 1984; Doscher et al. 1985; Ruengsakulrachh et al. 2001;] provi des simplest understanding of distribution of the arches. Although the classical pattern of the arch occurs in frequently, anatomical presence of a complete superficial palmar arch varies from 84% to 66% [Coleman & Anson]. This incidence was lower in the c urrent study and might be a reflection of sample size [52 hands]. The median artery was found in 10% of the hands, similar frequency to that reported by McCormack et al. [1953].

  6. The Layout and Simulation of Logarithmic Spiral Double Curved Arch Dam Transverse Joints%The Layout and Simulation of Logarithmic Spiral Double Curved Arch Dam Transverse Joints

    Institute of Scientific and Technical Information of China (English)

    DU Ting-na; DU Qi-lu; HUI Yuan

    2011-01-01

    Because of its good condition with mechanics, logarithmic spiral double curve arch bam has been widely used in the practical engineering. The introduction of a new method in how to divide transverse joint in arch dam will be given and the further research of its calculation has been done. The C++ is used in electronic procedure and the 3D simulation has been finished with AutoCAD, which will provide the object model for computer simulation of the arch dam and the division of finite element mesh. Meanwhile, this method in dividing the transverse joint in arch dam also can be taken as the calculated basis for the design and calculation of arch dam, construction lofting and the calculation of the work amount.

  7. ARCHES: Advancing Research & Capacity in Hydrologic Education and Science

    Science.gov (United States)

    Milewski, A.; Fryar, A. E.; Durham, M. C.; Schroeder, P.; Agouridis, C.; Hanley, C.; Rotz, R. R.

    2013-12-01

    Educating young scientists and building capacity on a global scale is pivotal towards better understanding and managing our water resources. Based on this premise the ARCHES (Advancing Research & Capacity in Hydrologic Education and Science) program has been established. This abstract provides an overview of the program, links to access information, and describes the activities and outcomes of student participants from the Middle East and North Africa. The ARCHES program (http://arches.wrrs.uga.edu) is an integrated hydrologic education approach using online courses, field programs, and various hands-on workshops. The program aims to enable young scientists to effectively perform the high level research that will ultimately improve quality of life, enhance science-based decision making, and facilitate collaboration. Three broad, interlinked sets of activities are incorporated into the ARCHES program: (A1) the development of technical expertise, (A2) the development of professional contacts and skills, and (A3) outreach and long-term sustainability. The development of technical expertise (A1) is implemented through three progressive instructional sections. Section 1: Students were guided through a series of online lectures and exercises (Moodle: http://wrrs.uga.edu/moodle) covering three main topics (Remote Sensing, GIS, and Hydrologic Modeling). Section 2: Students participated in a hands-on workshop hosted at the University of Georgia's Water Resources and Remote Sensing Laboratory (WRRSL). Using ENVI, ArcGIS, and ArcSWAT, students completed a series of lectures and real-world applications (e.g., Development of Hydrologic Models). Section 3: Students participated in field studies (e.g., measurements of infiltration, recharge, streamflow, and water-quality parameters) conducted by U.S. partners and international collaborators in the participating countries. The development of professional contacts and skills (A2) was achieved through the promotion of networking

  8. Examination of MARCO activity on dendritic cell phenotype and function using a gene knockout mouse.

    Directory of Open Access Journals (Sweden)

    Hiroshi Komine

    Full Text Available We have reported the upregulation of MARCO, a member of the class A scavenger receptor family, on the surface of murine and human dendritic cells (DCs pulsed with tumor lysates. Exposure of murine tumor lysate-pulsed DCs to an anti-MARCO antibody led to loss of dendritic-like processes and enhanced migratory capacity. In this study, we have further examined the biological and therapeutic implications of MARCO expression by DCs. DCs generated from the bone marrow (bm of MARCO knockout (MARCO⁻/⁻ mice were phenotypically similar to DCs generated from the bm of wild-type mice and produced normal levels of IL-12 and TNF-α when exposed to LPS. MARCO⁻/⁻ DCs demonstrated enhanced migratory capacity in response to CCL-21 in vitro. After subcutaneous injection into mice, MARCO⁻/⁻ TP-DCs migrated more efficiently to the draining lymph node leading to enhanced generation of tumor-specific IFN-γ producing T cells and improved tumor regression and survival in B16 melanoma-bearing mice. These results support targeting MARCO on the surface of DCs to improve trafficking and induction of anti-tumor immunity.

  9. Initial arch wires for alignment of crooked teeth with fixed orthodontic braces.

    LENUS (Irish Health Repository)

    Wang, Yan

    2010-01-01

    The initial arch wire is the first arch wire to be inserted into the fixed appliance at the beginning of orthodontic treatment and is used mainly for correcting crowding and rotations of teeth. With a number of orthodontic arch wires available for initial tooth alignment, it is important to understand which wire is most efficient, as well as which wires cause the least amount of root resorption and pain during the initial aligning stage of treatment.

  10. Stiffness of the human foot and evolution of the transverse arch

    OpenAIRE

    Venkadesan, Madhusudhan; Dias, Marcelo A.; Singh, Dhiraj K.; Bandi, Mahesh M.; Mandre, Shreyas

    2017-01-01

    Foot stiffness underlies its mechanical function, and is central to the evolution of human bipedal locomotion. The stiff and propulsive human foot has two distinct arches, the longitudinal and transverse. By contrast, the feet of non-human primates are flat and softer. Current understanding of foot stiffness is based on studies that focus solely on the longitudinal arch, and little is known about the mechanical function of the transverse arch. However, common experience suggests that transver...

  11. Classification of the height and flexibility of the medial longitudinal arch of the foot

    OpenAIRE

    2012-01-01

    Abstract Background The risk of developing injuries during standing work may vary between persons with different foot types. High arched and low arched feet, as well as rigid and flexible feet, are considered to have different injury profiles, while those with normal arches may sustain fewer injuries. However, the cut-off values for maximum values (subtalar position during weight-bearing) and range of motion (ROM) values (difference between subtalar neutral and subtalar resting position in a ...

  12. A rare cause of cervical spinal stenosis: posterior arch hypoplasia in a bipartite atlas

    Energy Technology Data Exchange (ETDEWEB)

    Atasoy, C. [Emek, Kirim Caddesi, Ankara (Turkey); Department of Radiology, Ankara University School of Medicine (Turkey); Fitoz, S.; Karan, B.; Erden, I.; Akyar, S. [Department of Radiology, Ankara University School of Medicine (Turkey)

    2002-03-01

    We describe CT and MRI of a previously unreported combination of atlantoaxial anomalies consisting of posterior arch hypoplasia in a bipartite atlas with an os odontoideum, in a 30-year-old woman presenting with neck and left arm pain. MRI showed the os odontoideum, marked stenosis of the spinal canal at the level of the atlas, with cord compression and evidence of myelopathy. CT revealed a bipartite atlas with midline clefts in anterior and posterior arches, thickening in the anterior arch and hypoplasia of the posterior arch with incurving of both hemiarches. Flexion and extension radiographs demonstrated atlantoaxial instability. (orig.)

  13. [Diagnosis and follow-up of reduction of fractures of the zygomatic arch].

    Science.gov (United States)

    Friedrich, R E; Volkenstein, R J

    1994-08-01

    Ultrasound and standard x-ray investigations before and after the reduction of the fractures were performed in 17 patients with zygomatic arch fractures. The ultrasound investigation of the bone surface is recommended as an additional diagnostic tool in the diagnosis and control of the reduction of zygomatic arch fractures. Intraoperative ultrasound imaging under sterile conditions is easy to apply and enables the surgeon to optimise therapeutic results. In 5 cases based on an intraoperative sonogram further reductions of zygomatic arch fractures were carried out. In another referred patient the diagnosis of a zygomatic arch fracture was excluded by ultrasound and confirmed by standard x-ray examinations.

  14. Contrast-enhanced magnetic resonance angiography of persistent fifth aortic arch in children

    Energy Technology Data Exchange (ETDEWEB)

    Zhong, Yumin; Zhu, Ming; Sun, Aimin; Li, Yuhua [Shanghai Jiao Tong University School of Medicine, Department of Radiology, Shanghai Children' s Medical Center, Shanghai (China); Jaffe, Richard B. [Primary Children' s Medical Center, Department of Medical Imaging, Salt Lake City, UT (United States); Gao, Wei [Shanghai Jiao Tong University School of Medicine, Department of Cardiology, Shanghai Children' s Medical Center, Shanghai (China)

    2007-03-15

    Cine angiography and echocardiography have been utilized to diagnose congenital aortic arch anomalies. However, the visualization of great vessels by echocardiography is limited, while cine angiography requires cardiac catheterization with ionizing radiation. Contrast-enhanced magnetic resonance angiography (MRA) is a noninvasive modality suitable for visualization of congenital aortic arch anomalies. To evaluate the utility of contrast-enhanced MRA in the diagnosis of persistent fifth aortic arch, a rare congenital aortic arch anomaly, and to compare the diagnostic accuracy of MRA with that of echocardiography and cine angiography. In four pediatric patients, contrast-enhanced MRA studies were performed for diagnosing persistent fifth aortic arch. The findings of MRA were compared with echocardiographic findings and confirmed by cine angiography and operation. Transthoracic surface echocardiography noted an aberrant vessel arising from the ascending aorta in two of four patients; the etiology of this vessel was uncertain. In the other two patients a diagnosis of coarctation was made. Of the four patients, only one was diagnosed with interruption of the aortic arch. Contrast-enhanced MRA clarified uncertain echocardiographic findings, enabling the correct diagnosis of persistent fifth aortic arch with fourth aortic arch interruption in all four patients. Contrast-enhanced MRA is a safe, accurate, and fast imaging technique for the evaluation of persistent fifth aortic arch and may obviate the need for conventional cine angiography. Cardiac catheterization may be reserved for some types of complicated congenital heart disease and for obtaining hemodynamic information. (orig.)

  15. The Foot’s Arch and the Energetics of Human Locomotion

    OpenAIRE

    Stearne, Sarah M.; McDonald, Kirsty A.; Jacqueline A Alderson; Ian North; Oxnard, Charles E; Jonas Rubenson

    2016-01-01

    The energy-sparing spring theory of the foot’s arch has become central to interpretations of the foot’s mechanical function and evolution. Using a novel insole technique that restricted compression of the foot’s longitudinal arch, this study provides the first direct evidence that arch compression/recoil during locomotion contributes to lowering energy cost. Restricting arch compression near maximally (~80%) during moderate-speed (2.7 ms−1) level running increased metabolic cost by + 6.0% (p ...

  16. Out-of-plane free vibration analysis of a cable-arch structure

    Science.gov (United States)

    Kang, H. J.; Zhao, Y. Y.; Zhu, H. P.

    2013-02-01

    Cable-arch structure has been widely used in many long-span structures such as cable roofs and cable-stayed arch bridges, but its dynamics is still not well understood. In this paper, the out-of-plane dynamic behavior of a cable-arch structure is investigated. The equations governing the out-of-plane free vibration of the structure are derived using d'Alembert's principle. A transfer matrix method is used to solve the governing equations and determine the frequencies of the out-of-plane vibration. The theories are then used to study two specific cases: free vibration of a model cable-arch and simulation of an arch erection process. The effects of some key parameters of cable and arch, such as tension of cable and radius, open-angle and shape of arch, are examined. The results indicate that in-plane and spatial cables can largely improve the out-of-plane dynamic behavior of arch structures, which are further verified by analyzing the out-of-plane buckling of cable-arch structures. The present work should be valuable and significant not only for the fundamental research but also engineering design of roofs and bridges.

  17. Congenital aortic arch anomalies: diagnosis using contrast enhanced magnetic resonance angiography

    Institute of Scientific and Technical Information of China (English)

    ZHU Ming; ZHONG Yu-min; LI Yu-hua; SUN Ai-min; JIN Biao

    2005-01-01

    @@ Congenital aortic arch anomalies occur most commonly in children. The disease can be classified into three types: ① obstructive congenital abnormalities, including coarctation of aorta (CoA) and interruption of aortic arch (IAA); ② non-obstructive congenital abnormalities, including double aortic arch and others; ③ congenital shunt abnormalities, including different types of patent ductus arteriosus (PDA). Management of patients with congenital aortic arch anomalies relies on imaging. Routine imaging modalities, such as conventional X-ray plain film and transthoracic echocardiography (TTE), have been recently complemented by magnetic resonance imaging (MRI).

  18. Elastic responses of underground circular arches considering dynamic soil-structure interaction: A theoretical analysis

    Institute of Scientific and Technical Information of China (English)

    Hai-Long Chen; Feng-Nian Jin; Hua-Lin Fan

    2013-01-01

    Due to the wide applications of arches in underground protective structures,dynamic analysis of circular arches including soil-structure interactions is important.In this paper,an exact solution of the forced vibration of circular arches subjected to subsurface denotation forces is obtained.The dynamic soil-structure interaction is considered with the introduction of an interfacial damping between the structure element and the surrounding soil into the equation of motion.By neglecting the influences of shear,rotary inertia and tangential forces and assuming the arch incompressible,the equations of motion of the buried arches were set up.Analytical solutions of the dynamic responses of the protective arches were deduced by means of modal superposition.Arches with different opening angles,acoustic impedances and rise-span ratios were analyzed to discuss their influences on an arch.The theoretical analysis suggests blast loads for elastic designs and predicts the potential failure modes for buried protective arches.

  19. 78 FR 39610 - Safety Zone; Big Bay Boom, San Diego Bay; San Diego, CA

    Science.gov (United States)

    2013-07-02

    ... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Safety Zone; Big Bay Boom, San Diego Bay; San Diego, CA... temporary safety zones upon the navigable waters of the San Diego Bay for the annual Port of San Diego... Sector San Diego, Coast Guard; telephone 619-278-7261, email d11marineeventssd@uscg.mil . If you have...

  20. 75 FR 38412 - Safety Zone; San Diego POPS Fireworks, San Diego, CA

    Science.gov (United States)

    2010-07-02

    ... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Safety Zone; San Diego POPS Fireworks, San Diego, CA... zone on the ] navigable waters of San Diego Bay in support of the San Diego POPS Fireworks. This safety.... Coast Guard Sector San Diego, CA; telephone 619-278- 7262, e-mail Shane.E.Jackson@uscg.mil . If you have...

  1. 78 FR 42027 - Safety Zone; San Diego Bayfair; Mission Bay, San Diego, CA

    Science.gov (United States)

    2013-07-15

    ... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Safety Zone; San Diego Bayfair; Mission Bay, San Diego... proposing a temporary safety zone on the navigable waters of Mission Bay in San Diego, CA for the San Diego..., call or email Lieutenant John Bannon, Waterways Management, U.S. Coast Guard Sector San Diego...

  2. 78 FR 29289 - Safety Zone; Big Bay Boom, San Diego Bay, San Diego, CA

    Science.gov (United States)

    2013-05-20

    ... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Safety Zone; Big Bay Boom, San Diego Bay, San Diego, CA... establish four temporary safety zones upon the navigable waters of San Diego ] Bay for the Port of San Diego... Management, U.S. Coast Guard Sector San Diego; telephone (619) 278-7261, email John.E.Bannon@uscg.mil . If...

  3. 78 FR 53245 - Safety Zone; San Diego Bayfair; Mission Bay, San Diego, CA

    Science.gov (United States)

    2013-08-29

    ... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Safety Zone; San Diego Bayfair; Mission Bay, San Diego... temporary safety zone upon the navigable waters of Mission Bay in San Diego, CA for the annual San Diego... Management, U.S. Coast Guard Sector San Diego; telephone (619) 278-7261, email John.E.Bannon@uscg.mil . If...

  4. Earthquake safety assessment of concrete arch and gravity dams

    Institute of Scientific and Technical Information of China (English)

    Lin Gao; Hu Zhiqiang

    2005-01-01

    Based on research studies currently being carried out at Dalian University of Technology, some important aspects for the earthquake safety assessment of concrete dams are reviewed and discussed. First, the rate-dependent behavior of concrete subjected to earthquake loading is examined, emphasizing the properties of concrete under cyclic and biaxial loading conditions. Second, a modified four-parameter Hsieh-Ting-Chen viscoplastic consistency model is developed to simulate the rate-dependent behavior of concrete. The earthquake response of a 278m high arch dam is analyzed, and the results show that the strain-rate effects become noticeable in the inelastic range. Third, a more accurate non-smooth Newton algorithm for the solution of three-dimensional frictional contact problems is developed to study the joint opening effects of arch dams during strong earthquakes. Such effects on two nearly 300m high arch dams have been studied. It was found that the canyon shape has great influence on the magnitude and distribution of the joint opening along the dam axis. Fourth, the scaled boundary finite element method presented by Song and Wolf is employed to study the dam-reservoir-foundation interaction effects of concrete dams. Particular emphases were placed on the variation of foundation stiffness and the anisotropic behavior of the foundation material on the dynamic response of concrete dams. Finally, nonlinear modeling of concrete to study the damage evolution of concrete dams during strong earthquakes is discussed. An elastic-damage mechanics approach for damage prediction of concrete gravity dams is described as an example. These findings are helpful in understanding the dynamic behavior of concrete dams and promoting the improvement of seismic safety assessment methods.

  5. Effects of different medial arch support heights on rearfoot kinematics

    Science.gov (United States)

    Mayer, Frank; Baur, Heiner

    2017-01-01

    Background Foot orthoses are usually assumed to be effective by optimizing mechanically dynamic rearfoot configuration. However, the effect from a foot orthosis on kinematics that has been demonstrated scientifically has only been marginal. The aim of this study was to examine the effect of different heights in medial arch-supported foot orthoses on rear foot motion during gait. Methods Nineteen asymptomatic runners (36±11years, 180±5cm, 79±10kg; 41±22km/week) participated in the study. Trials were recorded at 3.1 mph (5 km/h) on a treadmill. Athletes walked barefoot and with 4 different not customized medial arch-supported foot orthoses of various arch heights (N:0 mm, M:30 mm, H:35 mm, E:40mm). Six infrared cameras and the `Oxford Foot Model´ were used to capture motion. The average stride in each condition was calculated from 50 gait cycles per condition. Eversion excursion and internal tibia rotation were analyzed. Descriptive statistics included calculating the mean ± SD and 95% CIs. Group differences by condition were analyzed by one factor (foot orthoses) repeated measures ANOVA (α = 0.05). Results Eversion excursion revealed the lowest values for N and highest for H (B:4.6°±2.2°; 95% CI [3.1;6.2]/N:4.0°±1.7°; [2.9;5.2]/M:5.2°±2.6°; [3.6;6.8]/H:6.2°±3.3°; [4.0;8.5]/E:5.1°±3.5°; [2.8;7.5]) (p>0.05). Range of internal tibia rotation was lowest with orthosis H and highest with E (B:13.3°±3.2°; 95% CI [11.0;15.6]/N:14.5°±7.2°; [9.2;19.6]/M:13.8°±5.0°; [10.8;16.8]/H:12.3°±4.3°; [9.0;15.6]/E:14.9°±5.0°; [11.5;18.3]) (p>0.05). Differences between conditions were small and the intrasubject variation high. Conclusion Our results indicate that different arch support heights have no systematic effect on eversion excursion or the range of internal tibia rotation and therefore might not exert a crucial influence on rear foot alignment during gait. PMID:28257426

  6. On monolithic stability and reinforcement analysis of high arch dams

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    Monolithic stability safety and reinforcement based on monolithic stability are very important for arch dam design.In this paper,the issue is addressed based on deformation reinforcement theory.In this approach,plastic complementary energy norm can be taken as safety Index for monolithic stability.According to deformation reinforcement theory,the areas where unbalanced force exists require reinforcement,and the required reinforcement forces are just the unbalanced forces with opposite direction.Results show that areas with unbalanced force mainly concentrate in dam-toes,dam-heels and faults.

  7. Abnormal foramina on the posterior arch of atlas vertebra

    Directory of Open Access Journals (Sweden)

    Nayak SB

    2008-10-01

    Full Text Available Atlas is the first cervical vertebra. It articulates with the occipital bone above and the axis vertebra below. It plays an important role in movement of the skull and the neck. We found a rare variation of the atlas vertebra. The posterior arch of the atlas had one accessory foramen just behind each lateral mass. Foramen on the right side was larger than that of the left. The knowledge of this variation may be of importance to orthopedic surgeons, neurosurgeons, radiologists and anthropologists.

  8. Full-Arch Rehabilitation of a Patient With Cyclic Neutropenia.

    Science.gov (United States)

    Block, Michael S; Brindis, Marco; Block, Celeste A; Berron, Joaquin M

    2015-09-01

    The purpose of this report is to discuss the treatment of a patient with cyclic neutropenia. This patient presented with flared teeth, thin alveolar bone, and mobile teeth. A staged approach was used to remove her teeth, augment the bone, use immediate fixed provisional to determine the type of final prostheses, and ultimately to use cone-shaped overdenture attachments to retain her final prostheses. The result was rehabilitation of the patient with esthetic full-arch fixed-removable dentures with no adverse sequelae in this patient with this systemic disease.

  9. Review for the Volume “Alexei Marco. Destinul unui bijutier din Moldova” / Alexei Marco. The Destiny of a Jeweler from Moldova – Author Liliana Condraticova

    Directory of Open Access Journals (Sweden)

    Antonio SANDU

    2011-12-01

    Full Text Available The volume “Alexei Marco. The Destiny of a Jeweler from Moldova” review historiographical sources on jewelry art study, both worldwide and from Moldova. The historiographic presentation, performed with great professionalism in the use of historical sources, is perfected by the art critic’s sensitivity of Liliana Condraticova. The attraction of gold is alchemized, the metal being transformed into art. To simple economic value is added the esthetic human value.

  10. A comparative study of inter-abutment distance of dies made from full arch dual-arch impression trays with those made from full arch stock trays: An in vitro study

    OpenAIRE

    Reddy Jagan; Prashanti E; Kumar G; Suresh Sajjan M; Mathew Xavier

    2009-01-01

    Objectives: The dual-arch impression technique is convenient in that it makes the required maxillary and mandibular impressions, as well as the inter-occlusal record in one procedure. The accuracy of inter-abutment distance in dies fabricated from dual-arch impression technique remains in question because there is little information available in the literature. Materials and Methods: This study was conducted to evaluate the accuracy of inter-abutment distance in dies obtained from full ar...

  11. Marcos de acción colectiva en los sitios web del Movimiento Global Ecoaldeas

    OpenAIRE

    Pereira Salazar, Claudio Antonio

    2015-01-01

    En esta investigación doctoral se estudian los marcos de acción colectiva del Movimiento Global de Ecoaldeas, como expresión de una acción social transformadora que promueve espacios de movilización a nivel planetario y particularidades en sus repertorios de movilización a nivel local. El objetivo general de esta Tesis consiste en el estudio de los marcos de acción colectiva contenidos en las representaciones que el Movimiento Global de Ecoaldeas ofrece sobre sí mismo y su entorno en sus sit...

  12. Gravity Investigations with the MarcoPolo-R Radio Science Experiment RSE

    Science.gov (United States)

    Andert, T. P.; Pätzold, M.; Bellerose, J.; Barriot, J. P.; Oberst, J.; Hahn, M.; Tellmann, S.; Remus, S.; Förstner, R.; Häusler, B.

    2013-09-01

    The ESA sample return mission MarcoPolo-R is one of the current candidate M3 missions. It will rendezvous with a primitive Near Earth Asteroid (NEA), scientifically characterize it at multiple scales, and return a unique sample to Earth [3] The determination of the global physical properties of the mission target, the Near Earth Asteroid 2008 EV5, is among others one science objective of the MarcoPolo-R mission. In this context one key parameter is the gravity field, especially GM (gravitational constant times the mass) and the low order gravity coefficients C20 and C22 of the asteroid.

  13. Riparian Habitat - San Joaquin River

    Data.gov (United States)

    California Department of Resources — The immediate focus of this study is to identify, describe and map the extent and diversity of riparian habitats found along the main stem of the San Joaquin River,...

  14. 1906 San Francisco, USA Images

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The 1906 San Francisco earthquake was the largest event (magnitude 8.3) to occur in the conterminous United States in the 20th Century. Recent estimates indicate...

  15. An Upper and Middle Cervical Spine Posterior Arch Defect Leading to Myelopathy and a Thoracic Spine Posterior Arch Defect.

    Science.gov (United States)

    Yun, Dong-Ju; Hwang, Byeong-Wook; Kim, Dae Jin; Lee, Sang-Ho

    2016-09-01

    Abnormalities of the posterior arches of the upper and middle cervical spine that can cause myelopathy are rare, and no reports of such defects at the thoracic spinal level have been published. A 29-year-old male patient reported right arm weakness and pain for 1 year. Magnetic resonance imaging of the cervical spine showed spinal canal stenosis at the C3-4 and C4-5 levels, as well as a posterior arch defect at the C2, 3, and 4 levels that was compressing the spinal cord. Three-dimensional cervical computed tomography (CT) showed that the spinous process and a piece of lamina were fused at each of the posterior C2, 3, and 4 levels, producing a free-floating bony structure. Spina bifida occulta was observed at C1. Osseous formation had failed between the lateral mass and spinous process at the C2 and C3 levels bilaterally, and the C4 level unilaterally. Three-dimensional thoracolumbar CT showed blocked vertebrae and spinous process fusion at T11 and T12. Osseous formation had failed between the lamina and spinous process at the T11 level unilaterally, and the T12 level bilaterally. The free-floating bony structure was successfully removed surgically. A posterior arch defect of the upper and middle cervical spine leading to myelopathy combined with the same defect at the thoracic spine is a rare disease. If this congenital defect is detected at any spinal level, whole-spine CT can be helpful for accurately diagnosing the congenital anomaly. Copyright © 2016 Elsevier Inc. All rights reserved.

  16. Environmental assessment : Rodent control program : San Joaquin river levee : San Luis National Wildlife Refuge

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — The Lower San Joaquin Levee District (LSJLD) requires that six miles of levee situated along the San Joaquin River on San Luis National Wildlife Refuge (SLNWR) be...

  17. Building problem solving environments with the arches framework

    Energy Technology Data Exchange (ETDEWEB)

    Debardeleben, Nathan [Los Alamos National Laboratory; Sass, Ron [U NORTH CAROLINA; Stanzione, Jr., Daniel [ASU; Ligon, Ill, Walter [CLEMSON UNIV

    2009-01-01

    The computational problems that scientists face are rapidly escalating in size and scope. Moreover, the computer systems used to solve these problems are becoming significantly more complex than the familiar, well-understood sequential model on their desktops. While it is possible to re-train scientists to use emerging high-performance computing (HPC) models, it is much more effective to provide them with a higher-level programming environment that has been specialized to their particular domain. By fostering interaction between HPC specialists and the domain scientists, problem-solving environments (PSEs) provide a collaborative environment. A PSE environment allows scientists to focus on expressing their computational problem while the PSE and associated tools support mapping that domain-specific problem to a high-performance computing system. This article describes Arches, an object-oriented framework for building domain-specific PSEs. The framework was designed to support a wide range of problem domains and to be extensible to support very different high-performance computing targets. To demonstrate this flexibility, two PSEs have been developed from the Arches framework to solve problem in two different domains and target very different computing platforms. The Coven PSE supports parallel applications that require large-scale parallelism found in cost-effective Beowulf clusters. In contrast, RCADE targets FPGA-based reconfigurable computing and was originally designed to aid NASA Earth scientists studying satellite instrument data.

  18. A radiological study on lumbar spondylolisthesis with intact neural arch

    Energy Technology Data Exchange (ETDEWEB)

    Choi, Myung Ju; Suh, Young Jun; Joe, Seong Jeh; Yoon, Jong Sup [Han-Gang Sung-Shim Hospital, Seoul (Korea, Republic of)

    1980-12-15

    The purpose of this paper is to evaluate and analyze the radiological findings of 13 cases of lumbar spondylolisthesis with intact neural arch at Han-Gang Sung- Shim Hospital during period from Jan. 1975 to June 1980. 1. The age distribution of the patients varied from 31 to 83 years old. The average of the age was 53 years old. 12 patients were female and only one patient was male. 2. All cases revealed anterior slipping of the L4 body on the L5 body, of which degree was classified by Meyerding's method, first degree in 12 patients and second degree in one patient. 3. The angle between the pedicle and inferior articular facet of affected vertebra was measured by Junghann's method. The average of angle was 123 degree. 4. Of 13 cases, 2 cases who had neural compression caused by dislocation of the vertebral bodies and intrusion of lamina and arthritic facets into stenotic spinal canal treated by laminar decompression including foraminotomy. Good results were obtained. 5. The secondary degenerative change of the vertebra was considered to be the cause of the spondylolisthesis with intact neural arch.

  19. Design and construction of prestressed arch using plastic shoppers waste

    Directory of Open Access Journals (Sweden)

    Ali Khan, S.

    2012-12-01

    Full Text Available Since the development of plastic in the last century, being versitile it has become very popular for diversified uses. The problem appears when these plastics, particularly shoppers are disposed as waste. The current reuse and recycling rates for the plastic shoppers waste are very low. Construction Industry has a great potential for the reuse of shoppers waste. Shoppers waste has been compressed to fabricate compressed shoppers waste (CSW blocks. This study is related to an innovative reuse of CSW-blocks for the construction of prestressed structural arch. This paper is dedicated to the design and construction of structural arch using shoppers waste as a material.

    Desde su desarrollo durante el siglo pasado y debido a su versatilidad, el plástico se ha hecho ubicuo en la sociedad actual. Los problemas surgen cuando este material, sobre todo cuando conforma bienes de consumo, se desecha. Actualmente, los índices de valorización y reciclado de residuos plásticos de origen doméstico son muy bajos. El sector de la construcción tiene una enorme potencial para reutilizar este tipo de residuos, que se pueden comprimir para fabricar bloques. Este artículo presenta un uso innovador de los bloques de residuos plásticos: la construcción de un arco estructural pretesado. Describe el proyecto y la ejecución de un arco estructural construido con estos materiales de desecho.

  20. Behaviour of Steel Arch Stabilized by a Textile Membrane

    Science.gov (United States)

    Svoboda, O.; Machacek, J.

    2015-11-01

    Behaviour of the slender steel arch supporting textile membranes in a membrane structure with respect to in-plane and out-of plane stability is investigated in the paper. In the last decades the textile membranes have been widely used to cover both common and exclusive structures due to progress in new membrane materials with eminent properties. Nevertheless, complex analysis of such membranes in interaction with steel structure (carbon/stainless steel perimeter or supporting elements) is rather demanding, even with specialized software. Laboratory model of a large membrane structure simulating a shelter roof of a concert stage was tested and the resulting stress/deflection values are presented. The model of a reasonable size was provided with prestressed membrane of PVC coated polyester fabric Ferrari® Précontraint 702S and tested under various loadings. The supporting steel structure consisted of two steel arch tubes from S355 grade steel and perimeter prestressed cables. The stability behaviour of the inner tube was the primary interest of the investigation. The SOFiSTiK software was used to analyse the structural behaviour in 3D. Numerical non-linear analysis of deflections and internal forces of the structure under symmetrical and asymmetrical loadings covers various membrane prestressing and specific boundary conditions. The numerical results are validated using test results. Finally, the preliminary recommendations for appropriate numerical modelling and stability design of the supporting structure are presented.

  1. Reverse Distal Transverse Palmar Arch in Distal Digital Replantation.

    Science.gov (United States)

    Wei, Ching-Yueh; Orozco, Oscar; Vinagre, Gustavo; Shafarenko, Mark

    2017-07-22

    Refinements in microsurgery have made distal finger replantation an established technique with high success rates and good functional and aesthetic outcomes. However, it still represents a technically demanding procedure due to the small vessel caliber and frequent lack of vessel length, requiring the use of interpositional venous grafts in some instances. We describe a new technique for anastomosis in fingertip replantation, whereby the need for venous grafts is eliminated. Applying the reverse distal transverse palmar arch technique, 11 cases of distal digital replantation were performed between January 2011 and July 2016. The described procedure was used for arterial anastomosis in 10 cases and arteriovenous shunting for venous drainage in 1 case. A retrospective case review was conducted. The technical description and clinical outcome evaluations are presented. Ten of the 11 replanted digits survived, corresponding to an overall success rate of 91%. One replant failed due to venous insufficiency. Blood transfusions were not required for any of the patients. Follow-up (range, 1.5-5 months) revealed near-normal range of motion and good aesthetic results. All of the replanted digits developed protective sensation. The average length of hospital admission was 5 days. All patients were satisfied with the results and were able to return to their previous work. The use of the reverse distal transverse palmar arch is a novel and reliable technique in distal digital replantation when an increase in vessel length is required, allowing for a tension-free arterial repair without the need for vein grafts.

  2. archAR: an archaeological augmented reality experience

    Science.gov (United States)

    Wiley, Bridgette; Schulze, Jürgen P.

    2015-03-01

    We present an application for Android phones or tablets called "archAR" that uses augmented reality as an alternative, portable way of viewing archaeological information from UCSD's Levantine Archaeology Laboratory. archAR provides a unique experience of flying through an archaeological dig site in the Levantine area and exploring the artifacts uncovered there. Using a Google Nexus tablet and Qualcomm's Vuforia API, we use an image target as a map and overlay a three-dimensional model of the dig site onto it, augmenting reality such that we are able to interact with the plotted artifacts. The user can physically move the Android device around the image target and see the dig site model from any perspective. The user can also move the device closer to the model in order to "zoom" into the view of a particular section of the model and its associated artifacts. This is especially useful, as the dig site model and the collection of artifacts are very detailed. The artifacts are plotted as points, colored by type. The user can touch the virtual points to trigger a popup information window that contains details of the artifact, such as photographs, material descriptions, and more.

  3. Deformation reinforcement theory and its application to high arch dams

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    In this paper,the deformation reinforcement theory(DRT) proposed by the authors is elaborated with a new definition of instability that an elasto-plastic structure is not stable if it cannot satisfy simultaneously equilibrium condition,kinematical admissibility and constitutive equations under the prescribed loading.Starting from the definition,a proof is established to the principle of minimum plastic complementary energy for failured structures.It is revealed that the principle of mini-mum plastic complementary energy results in relaxed constitutive equations,especially,yield conditions.It is demonstrated with case studies that many key issues in arch dam design,e.g.,global stability,dam-toe reinforcement,dam-toe cracking,dam-abut-ment reinforcement,can be well solved within the framework of the deformation reinforcement theory.The structural global stability can be described by the curve of the plastic complementary energy vs overloading factor.The unbalanced-forces obtained by elasto-plastic FEM can be used as the basis of analysis of global stability,dam-heel cracking,dam-toe anchorage and reinforcement of faults of high arch dams and their foundations.

  4. Residencia San Pedro, California

    Directory of Open Access Journals (Sweden)

    Neutra, Richard J.

    1961-01-01

    Full Text Available Esta vivienda representa una aproximación más hacia la típica casa grande española, con techos de teca de 7 cm, que los señores Rados han edificado y en la que albergan a su gran familia de hijos, los cuales tienen ya sus propios vástagos. Ambos, el señor y la señora Rados, descienden de familias navieras italianas de Trieste, y el propio señor Rados tiene una compañía constructora de barcos en el puerto de San Pedro, que puede verse desde su propia casa. Los dos son verdaderamente unos abuelos muy sociables, cariñosos y atentos. Por añadidura, la señora Rados se entretiene frecuentemente y le agrada el cuidado de la casa. Por ello ha sido proyectada para facilitar sensiblemente toda esta serie de actividades.

  5. VALORES Y PROYECTOS DE VIDA EN JOVENES INTEGRANTES DE UNA COMUNIDAD EDUCATIVA ESTUDIO DE CASO: COLEGIO SAN IGNACIO

    OpenAIRE

    GATICA CHANDIA, MIGUEL

    2008-01-01

    El estudio denominado "Valores y Proyectos de Vida en Jóvenes integrantes de una Comunidad Educativa, un estudio de caso: Colegio San Ignacio Alonso Ovalle", tuvo por objeto investigar los valores y los proyectos de vida de jóvenes estudiantes de cuarto año medio de esa institución educativa, en su contexto escolar, además de caracterizarlos y relacionarlos con su comunidad educativa y sus proyectos de vida. Para ello, se recurrió a un marco teórico - conceptual que en térmi...

  6. 49 CFR 230.61 - Arch tubes, water bar tubes, circulators and thermic siphons.

    Science.gov (United States)

    2010-10-01

    ... (Continued) FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF TRANSPORTATION STEAM LOCOMOTIVE INSPECTION AND MAINTENANCE STANDARDS Boilers and Appurtenances Washing Boilers § 230.61 Arch tubes, water bar tubes, circulators and thermic siphons. (a) Frequency of cleaning. Each time the boiler is washed, arch tubes...

  7. Cephalic arch stenosis in autogenous brachiocephalic hemodialysis fistulas: results of cutting balloon angioplasty

    DEFF Research Database (Denmark)

    Heerwagen, Søren Thorup; Lönn, Lars; Schroeder, Torben V;

    2010-01-01

    Cephalic arch stenosis is a known cause of hemodialysis access failure in patients with brachiocephalic fistulas (BCFs). Outcomes of endovascular treatment are affected by resistance of the stenosis to balloon dilation, a high vein rupture rate and the development of early restenosis. The purpose...... of this retrospective study was to report outcomes after cutting balloon angioplasty (CBA) of cephalic arch stenosis....

  8. Relation of Gothic arch apex to dentist-assisted centric relation.

    Science.gov (United States)

    Myers, M; Dziejma, R; Goldberg, J; Ross, R; Sharry, J

    1980-07-01

    These data suggest that the widely held belief that thumb pressure can position the mandible consistently more posterior than the position indicated by the Gothic arch apex is unfounded. Furthermore, this study provides no evidence to support the contention that the dentist-assisted jaw relation is more reproducible than the relation indicated by the Gothic arch apex.

  9. Clinical Advantages and Limitations of Monolithic Zirconia Restorations Full Arch Implant Supported Reconstruction: Case Series

    Directory of Open Access Journals (Sweden)

    Joao Carames

    2015-01-01

    Full Text Available Purpose. The purpose of this retrospective case series is to evaluate the clinical advantages and limitations of monolithic zirconia restorations for full arch implant supported restorations and report the rate of complications up to 2 years after insertion. Materials and Methods. Fourteen patients received implant placement for monolithic zirconia full arch reconstructions. Four implants were placed in seven arches, eleven arches received six implants, two arches received seven implants, two arches received eight implants, and one arch received nine implants. Results. No implant failures or complications were reported for an implant survival rate of 100% with follow-up ranging from 3 to 24 months. Conclusions. Monolithic zirconia CAD-/CAM-milled framework restorations are a treatment option for full arch restorations over implants, showing a 96% success rate in the present study. Some of the benefits are accuracy, reduced veneering porcelain, and minimal occlusal adjustments. The outcome of the present study showed high success in function, aesthetics, phonetics, and high patient satisfaction.

  10. Effect of foot load changes on foot arch evaluation using foot pressure distribution data

    National Research Council Canada - National Science Library

    Kazuya Imaizumi; Yumi Iwakami; Kazuhiko Yamashita

    2014-01-01

    ... be helpful in health support for the elderly. The present authors have developed a classification system for foot arch type showing high reliability using foot pressure distribution data [1-2]. However, effect of foot load changes on foot arch evaluation remains unclear. The aim of this study was to investigate the effect of foot load chan...

  11. Effects of unilateral premolar extraction treatment on the dental arch forms of Class II subdivision malocclusions.

    Science.gov (United States)

    Dahiya, Ginu; Masoud, Ahmed I; Viana, Grace; Obrez, Ales; Kusnoto, Budi; Evans, Carla A

    2017-08-01

    A retrospective study evaluating posttreatment symmetry in dental arch form and midlines was carried out in Class II subdivision patients treated with unilateral and bilateral maxillary premolar extractions. Using Geomagic (version 14; Geomagic, Research Triangle Park, NC) and MATLAB (version 8.4; MathWorks, Natick, Mass) software, best-fit curves expressed as quartic polynomials were generated for 13 Class II subdivisions treated with unilateral extractions and 20 treated with bilateral maxillary premolar extractions. Transverse and sagittal measurements were recorded to assess symmetry. Dental models were superimposed on constructed reference planes to generate average posttreatment arches. Statistical comparisons were performed with the significance level set at P ≤0.05. The unilateral extraction group showed significant differences in transverse arch forms between the right and left sides in the anterior, anterior-middle, and middle segments of the arch, and all regions other than the posterior segment in the sagittal dimension. Significant differences were found between groups in the anterior and anterior-middle segments of the arch transversely, the middle and middle-posterior segments sagittally, and the midline deviation relative to the midsagittal plane. Superimposed average arches showed similar results. Unilateral maxillary extraction treatment generally results in a narrower and more posteriorly displaced arch form on the extraction side, with a deviated maxillary midline toward the extraction side of the arch. Copyright © 2017 American Association of Orthodontists. Published by Elsevier Inc. All rights reserved.

  12. [The value of ultrasonography in the diagnosis of zygomatic arch fractures].

    Science.gov (United States)

    Friedrich, R E; Volkenstein, R J

    1991-01-01

    In 15 cases ultrasonograms were used to verify the result of a zygomatic fracture reduction and were correlated to conventional x-ray films. Both the pre- and postoperative ultrasonograms demonstrated all fractures of the zygomatic arch. Ultrasonographic imaging of the non-exposed bone surfaces enables the operator to monitor the reduction of zygomatic arch fractures intraoperatively, and thus optimize the treatment results.

  13. A Foot-Arch Parameter Measurement System Using a RGB-D Camera

    Directory of Open Access Journals (Sweden)

    Sungkuk Chun

    2017-08-01

    Full Text Available The conventional method of measuring foot-arch parameters is highly dependent on the measurer’s skill level, so accurate measurements are difficult to obtain. To solve this problem, we propose an autonomous geometric foot-arch analysis platform that is capable of capturing the sole of the foot and yields three foot-arch parameters: arch index (AI, arch width (AW and arch height (AH. The proposed system captures 3D geometric and color data on the plantar surface of the foot in a static standing pose using a commercial RGB-D camera. It detects the region of the foot surface in contact with the footplate by applying the clustering and Markov random field (MRF-based image segmentation methods. The system computes the foot-arch parameters by analyzing the 2/3D shape of the contact region. Validation experiments were carried out to assess the accuracy and repeatability of the system. The average errors for AI, AW, and AH estimation on 99 data collected from 11 subjects during 3 days were −0.17%, 0.95 mm, and 0.52 mm, respectively. Reliability and statistical analysis on the estimated foot-arch parameters, the robustness to the change of weights used in the MRF, the processing time were also performed to show the feasibility of the system.

  14. The effect of minimal shoes on arch structure and intrinsic foot muscle strength

    Directory of Open Access Journals (Sweden)

    Elizabeth E. Miller

    2014-06-01

    Conclusion: These results suggest that endurance running in minimal support footwear with 4 mm offset or less makes greater use of the spring-like function of the longitudinal arch, thus leading to greater demands on the intrinsic muscles that support the arch, thereby strengthening the foot.

  15. "Roller coaster maneuver via lateral orbital approach" for reduction of isolated zygomatic arch fractures.

    Science.gov (United States)

    Pilanci, Ozgur; Basaran, Karaca; Datli, Asli; Kuvat, Samet Vasfi

    2013-11-01

    Numerous techniques have been reported for the reduction of zygomatic arch fractures. In this article, we aimed to describe a technique we named as "roller coaster maneuver via lateral orbital approach" to closed reduction of the isolated-type zygomatic arch fractures. Surgical outcomes of 14 patients treated with this method were outlined.

  16. High- compared to low-arched athletes exhibit smaller knee abduction moments in walking and running.

    Science.gov (United States)

    Powell, Douglas W; Andrews, Samantha; Stickley, Cris; Williams, D S Blaise

    2016-12-01

    High- (HA) and low-arched athletes (LA) experience distinct injury patterns. These injuries are the result of the interaction of structure and biomechanics. A suggested mechanism of patellofemoral pain pertains to frontal plane knee moments which may be exaggerated in LA athletes. We hypothesize that LA athletes will exhibit greater peak knee abduction moments than high-arched athletes.

  17. Selective cerebro-myocardial perfusion in complex congenital aortic arch pathology: a novel technique.

    Science.gov (United States)

    De Rita, Fabrizio; Lucchese, Gianluca; Barozzi, Luca; Menon, Tiziano; Faggian, Giuseppe; Mazzucco, Alessandro; Luciani, Giovanni Battista

    2011-11-01

    Simultaneous cerebro-myocardial perfusion has been described in neonatal and infant arch surgery, suggesting a reduction in cardiac morbidity. Here reported is a novel technique for selective cerebral perfusion combined with controlled and independent myocardial perfusion during surgery for complex or recurrent aortic arch lesions. From April 2008 to April 2011, 10 patients with arch pathology underwent surgery (two hypoplastic left heart syndrome [HLHS], four recurrent arch obstruction, two aortic arch hypoplasia + ventricular septal defect [VSD], one single ventricle + transposition of the great arteries + arch hypoplasia, one interrupted aortic arch type B + VSD). Median age was 63 days (6 days-36 years) and median weight 4.0 kg (1.6-52). Via midline sternotomy, an arterial cannula (6 or 8 Fr for infants) was directly inserted into the innominate artery or through a polytetrafluoroethylene (PTFE) graft (for neonates cerebro-myocardial perfusion was 39 ± 18 min (17-69). Weaning from cardiopulmonary bypass was achieved without inotropic support in three and with low dose in seven patients. One patient required veno-arterial extracorporeal membrane oxygenation. Four patients, body weight cerebro-myocardial perfusion is feasible in patients with complex or recurrent aortic arch disease, starting from premature newborn less than 2.0 kg of body weight to adults. The technique is as safe as previously reported methods of cerebro-myocardial perfusion and possibly more versatile.

  18. Un marco general para resultados sobre limitaciones de los sistemas formales

    OpenAIRE

    Grimson, Rafael; Departamento de Matemática Universidad de Buenos Aires

    2013-01-01

    En este artículo se estudian diferentes limitaciones de los sistemas formales y se les da un marco común. Principalmente trabajaremos con limitaciones relacionadas con las nociones de expresabilidad en la aritmética de Peano y de computabilidad. Daremos un principio general que engloba una amplia gama de resultados sobre limitaciones de los formalismos.

  19. Muid võimalusi ei ole! / Kristina Norman, Marco Laimre ; intervjueerinud Elena Šmakova

    Index Scriptorium Estoniae

    Norman, Kristina, 1979-

    2009-01-01

    53. Veneetsia biennaalil "Making Worlds" ("Konstrueerides maailmu") Eestit esindavast Kristina Normani Tõnismäe pronkssõduri monumenti käsitlevast kunstiprojektist "After-War" ("Järelsõda"). Projekti kuraator Marco Laimre. Eesti ekspositsioon on avatud Palazzo Malipieros 6. juunist 22. novembrini. Biennaali nõukogu otsustas anda suured Kuldsed Lõvid elutöö eest Yoko Onole ja John Baldessarile

  20. Marco Fabio Quintiliano y la retórica democrática

    National Research Council Canada - National Science Library

    Víctor ALONSO ROCAFORT

    2008-01-01

    ... clásicos, Marco Fabio Quintiliano. Sus propuestas enriquecerán aquellas otras que han ido a contracorriente de las visiones triunfales de la ciencia política moderna, y que desde los años cincuenta ha tenido en autores como Hannah Arendt, Sheldon Wolin, Hans G. Gadamer, Eric Voegelin o Leo Strauss a sus mayores adalides.

  1. Muid võimalusi ei ole! / Kristina Norman, Marco Laimre ; intervjueerinud Elena Šmakova

    Index Scriptorium Estoniae

    Norman, Kristina, 1979-

    2009-01-01

    53. Veneetsia biennaalil "Making Worlds" ("Konstrueerides maailmu") Eestit esindavast Kristina Normani Tõnismäe pronkssõduri monumenti käsitlevast kunstiprojektist "After-War" ("Järelsõda"). Projekti kuraator Marco Laimre. Eesti ekspositsioon on avatud Palazzo Malipieros 6. juunist 22. novembrini. Biennaali nõukogu otsustas anda suured Kuldsed Lõvid elutöö eest Yoko Onole ja John Baldessarile

  2. Décadas de Michels: marcos contextuais e prazo de validade para a "lei de ferro"

    National Research Council Canada - National Science Library

    Marenco, André; Noll, Maria Izabel

    2012-01-01

    ..., proposição cunhada por Robert Michels em sua obra Sociologia dos partidos políticos, de 1911. O artigo esboça, na primeira seção, as bases sociais e institucionais que serviram como marcos contextuais...

  3. Macrophage Receptor with Collagenous Structure (MARCO Is Processed by either Macropinocytosis or Endocytosis-Autophagy Pathway.

    Directory of Open Access Journals (Sweden)

    Seishiro Hirano

    Full Text Available The Macrophage Receptor with COllagenous structure (MARCO protein is a plasma membrane receptor for un-opsonized or environmental particles on phagocytic cells. Here, we show that MARCO was internalized either by ruffling of plasma membrane followed by macropinocytosis or by endocytosis followed by fusion with autophagosome in CHO-K1 cells stably transfected with GFP-MARCO. The macropinocytic process generated large vesicles when the plasma membrane subsided. The endocytosis/autophagosome (amphisome generated small fluorescent puncta which were visible in the presence of glutamine, chloroquine, bafilomycin, ammonia, and other amines. The small puncta, but not the large vesicles, co-localized with LC3B and lysosomes. The LC3-II/LC3-I ratio increased in the presence of glutamine, ammonia, and chloroquine in various cells. The small puncta trafficked between the peri-nuclear region and the distal ends of cells back and forth at rates of up to 2-3 μm/sec; tubulin, but not actin, regulated the trafficking of the small puncta. Besides phagocytosis MARCO, an adhesive plasma membrane receptor, may play a role in incorporation of various extracellular materials into the cell via both macropinocytic and endocytic pathways.

  4. Project Marco Polo: Bridging the Gap between Natural and Social Sciences.

    Science.gov (United States)

    Bein, Frederick L.; Rea, Patrick

    1992-01-01

    Describes Project Marco Polo in which students, teachers, and staff from "National Geographic" and the U.S. Navy traveled to Japan. Reports that they studied Japanese culture, oceanography, and natural science while on the trip. Includes excerpts from field journals kept by the participants, photographs of the trip, and a map. (DK)

  5. Dynamic stability analysis of circular arch subjected to follower forces with small disturbances; Judo kaju wo ukeru enkei arch no yuran ni yoru doteki kyodo to anteisei kaiseki

    Energy Technology Data Exchange (ETDEWEB)

    Fukuchi, N.; Okada, K. [Kyushu University, Fukuoka (Japan). Faculty of Engineering; Hirano, Y. [Sumitomo Heavy Industries, Ltd., Tokyo (Japan)

    1997-09-04

    This paper describes the deformation and dynamic stability of circular arch subjected to follower forces in a submerged membrane type marine structure reinforced by arch frames. Governing equations for finite deformations of the circular arch subjected to follower forces are introduced using an embedded curve coordinate, which are formulated by applying Galerkin method. In addition, equations of motion due to small disturbances under given condition of loading are introduced. Based on these equations, dynamic stability of the arch is analyzed by means of Runnge-Kutta-Gill method, to clarify the relationship between disturbances and instability regions and the resulting phenomena. Near the boundary regions of stability, both amplitude and cycle of deformation are greatly affected by the amplitude of disturbances. The dynamic instability is governed by the inverse symmetry primary mode with minimum characteristic frequency which is specific for the circular arch. The dynamic stability has high parameter dependency, and the instability regions have a complicated shapes. Although flattened arch has a smaller static critical load, it provides the dynamic stability against the disturbance. 5 refs., 10 figs.

  6. Automatic dental arch detection and panoramic image synthesis from CT images.

    Science.gov (United States)

    Sa-Ing, Vera; Wangkaoom, Kongyot; Thongvigitmanee, Saowapak S

    2013-01-01

    Due to accurate 3D information, computed tomography (CT), especially cone-beam CT or dental CT, has been widely used for diagnosis and treatment planning in dentistry. Axial images acquired from both medical and dental CT scanners can generate synthetic panoramic images similar to typical 2D panoramic radiographs. However, the conventional way to reconstruct the simulated panoramic images is to manually draw the dental arch on axial images. In this paper, we propose a new fast algorithm for automatic detection of the dental arch. Once the dental arch is computed, a series of synthetic panoramic images as well as a ray-sum panoramic image can be automatically generated. We have tested the proposed algorithm on 120 CT axial images and all of them can provide the decent estimate of the dental arch. The results show that our proposed algorithm can mostly detect the correct dental arch.

  7. A shared role for sonic hedgehog signalling in patterning chondrichthyan gill arch appendages and tetrapod limbs.

    Science.gov (United States)

    Gillis, J Andrew; Hall, Brian K

    2016-04-15

    Chondrichthyans (sharks, skates, rays and holocephalans) possess paired appendages that project laterally from their gill arches, known as branchial rays. This led Carl Gegenbaur to propose that paired fins (and hence tetrapod limbs) originally evolved via transformation of gill arches. Tetrapod limbs are patterned by asonic hedgehog(Shh)-expressing signalling centre known as the zone of polarising activity, which establishes the anteroposterior axis of the limb bud and maintains proliferative expansion of limb endoskeletal progenitors. Here, we use loss-of-function, label-retention and fate-mapping approaches in the little skate to demonstrate that Shh secretion from a signalling centre in the developing gill arches establishes gill arch anteroposterior polarity and maintains the proliferative expansion of branchial ray endoskeletal progenitor cells. These findings highlight striking parallels in the axial patterning mechanisms employed by chondrichthyan branchial rays and paired fins/limbs, and provide mechanistic insight into the anatomical foundation of Gegenbaur's gill arch hypothesis.

  8. Preliminary research on cycloid as a line type of the arch dam

    Institute of Scientific and Technical Information of China (English)

    DU Tingna; YE Rongbo; ZHAO Haifeng

    2012-01-01

    Currently, there are a wide range of line types in the field of arch dam designing and construction, and each of them may have their own strength and weakness disparately. A trade-off between the size, stress, as well as the construction cost and complex- ity of the dam needs to be made in order to arrive at a new solution called the cycloid arch dam. Through redevelopment of VBA us- ing AutoCAD, the arch ring and the center of the arch line have been designed. Also, the stress analysis on parabola and cycloid have been done, which provides a theoretical principle that the cycloid could be regarded as a new line type of the arch dam.

  9. Comparative Numerical Analysis of Different Strengthening Systems of Historical Brick Arches

    Science.gov (United States)

    Zielińska, M.

    2017-05-01

    The article presents a comparative numerical analysis of various ways to strengthen historical brick arches. Five ways of strengthening brick arches with steel tie-rods have been proposed. Two of these involve the use of braces wrapped around pillars supporting the arch connected with a tie-rod; the other two ways involve the use of the tie-rods with welded metal sheets of different sizes; the latter involves the use of a tie-rod glued with the use of an epoxy adhesive. The collected data were compared with the reference model of the arch left without any interference. The results make it possible to evaluate the effectiveness of the methods by comparing displacements in the vertical and horizontal direction and stresses. The article indicates the direction of proper planning and design of the arch strengthening in brick structures in historical buildings.

  10. EFFECT OF HOTZ PLATE APPLIANE TO MAXILLARY ARCH DEVELOPMENT PATIENTS WITH CLEFT LIP AND PALATE

    Directory of Open Access Journals (Sweden)

    Edy Machmud

    2015-06-01

    Full Text Available The purpose of this study was to analyze the effect of hotz plate appliance to maxillary arch development of complete unilateral cleft lip and palate patient. The subjects were divided into two groups. The first group consisted of 6 patients, aged under two years with hotz appliance, recruited from Hasan Sadikin Hospital Bandung, and the second group, as control group, consisted of 6 patients, aged under two years, without hotz appliance, recruited from Haji Hosiptal Makassar. It was showed that in group with hotz plate appliance, no difference found on the size of anterior maxillary arch and minor maxillary arch. On the other hand, in the control group, minor maxillary arch was longer than major maxillary arch. It was concluded that hotz plate appliances affected that palatal development of patient with complete unilateral cleft lip and palate.

  11. Abnormal aortic arch morphology in Turner syndrome patients is a risk factor for hypertension.

    Science.gov (United States)

    De Groote, Katya; Devos, Daniël; Van Herck, Koen; Demulier, Laurent; Buysse, Wesley; De Schepper, Jean; De Wolf, Daniël

    2015-09-01

    Hypertension in Turner syndrome (TS) is a multifactorial, highly prevalent and significant problem that warrants timely diagnosis and rigorous treatment. The objective of this study was to investigate the association between abnormal aortic arch morphology and hypertension in adult TS patients. This was a single centre retrospective study in 74 adult TS patients (age 29.41 ± 8.91 years) who underwent a routine cardiac MRI. Patients were assigned to the hypertensive group (N = 31) if blood pressure exceeded 140/90 mmHg and/or if they were treated with antihypertensive medication. Aortic arch morphology was evaluated on MRI images and initially assigned as normal (N = 54) or abnormal (N = 20), based on the curve of the transverse arch and the distance between the left common carotid-left subclavian artery. We additionally used a new more objective method to describe aortic arch abnormality in TS by determination of the relative position of the highest point of the transverse arch (AoHP). Logistic regression analysis showed that hypertension is significantly and independently associated with age, BMI and abnormal arch morphology, with a larger effect size for the new AoHP method than for the classical method. TS patients with hypertension and abnormal arch morphology more often had dilatation of the ascending aorta. There is a significant association between abnormal arch morphology and hypertension in TS patients, independent of age and BMI, and not related to other structural heart disease. We suggest that aortic arch morphology should be included in the risk stratification for hypertension in TS and propose a new quantitative method to express aortic arch morphology.

  12. Juicio Circuito Camps (parte 34) : Los delitos sexuales de lesa humanidad serán analizados dentro del marco y contexto en que fueron cometidos

    OpenAIRE

    Radio Universidad Nacional de La Plata

    2013-01-01

    Se transmite a los juzgados donde se cursan expedientes que realicen las investigaciones por delitos sexuales en el marco de las causas de lesa humanidad, dentro del marco y contexto en que fueron cometidos.

  13. File list: NoD.Emb.05.AllAg.Maxillary_arch_junction [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  14. File list: NoD.Emb.10.AllAg.Maxillary_arch_junction [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  15. File list: NoD.Emb.50.AllAg.Maxillary_arch_junction [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available NoD.Emb.50.AllAg.Maxillary_arch_junction mm9 No description Embryo Maxillary arch j...unction http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/NoD.Emb.50.AllAg.Maxillary_arch_junction.bed ...

  16. File list: InP.Emb.20.AllAg.Maxillary_arch_junction [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available InP.Emb.20.AllAg.Maxillary_arch_junction mm9 Input control Embryo Maxillary arch ju...nction http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/InP.Emb.20.AllAg.Maxillary_arch_junction.bed ...

  17. File list: InP.Emb.05.AllAg.Maxillary_arch_junction [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available InP.Emb.05.AllAg.Maxillary_arch_junction mm9 Input control Embryo Maxillary arch ju...nction http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/InP.Emb.05.AllAg.Maxillary_arch_junction.bed ...

  18. File list: InP.Emb.50.AllAg.Maxillary_arch_junction [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available InP.Emb.50.AllAg.Maxillary_arch_junction mm9 Input control Embryo Maxillary arch ju...nction http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/InP.Emb.50.AllAg.Maxillary_arch_junction.bed ...

  19. Frontal plane multi-segment foot kinematics in high- and low-arched females during dynamic loading tasks.

    Science.gov (United States)

    Powell, Douglas W; Long, Benjamin; Milner, Clare E; Zhang, Songning

    2011-02-01

    The functions of the medial longitudinal arch have been the focus of much research in recent years. Several studies have shown kinematic differences between high- and low-arched runners. No literature currently compares the inter-segmental foot motion of high- and low-arched recreational athletes. The purpose of this study was to examine inter-segmental foot motion in the frontal plane during dynamic loading activities in high- and low-arched female athletes. Inter-segmental foot motions were examined in 10 high- and 10 low-arched female recreational athletes. Subjects performed five barefooted trials in each of the following randomized movements: walking, running, downward stepping and landing. Three-dimensional kinematic data were recorded. High-arched athletes had smaller peak ankle eversion angles in walking, running and downward stepping than low-arched athletes. At the rear-midfoot joint high-arched athletes reached peak eversion later in walking and downward stepping than the low-arched athletes. The high-arched athletes had smaller peak mid-forefoot eversion angles in walking, running and downward stepping than the low-arched athletes. The current findings show that differences in foot kinematics between the high- and low-arched athletes were in position and not range of motion within the foot.

  20. File list: InP.Emb.10.AllAg.Maxillary_arch_junction [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available InP.Emb.10.AllAg.Maxillary_arch_junction mm9 Input control Embryo Maxillary arch ju...nction http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/InP.Emb.10.AllAg.Maxillary_arch_junction.bed ...

  1. File list: NoD.Emb.20.AllAg.Maxillary_arch_junction [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available NoD.Emb.20.AllAg.Maxillary_arch_junction mm9 No description Embryo Maxillary arch j...unction http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/NoD.Emb.20.AllAg.Maxillary_arch_junction.bed ...

  2. Explaining operational modal analysis with data from an arch bridge

    Science.gov (United States)

    Magalhães, Filipe; Cunha, Álvaro

    2011-07-01

    This tutorial paper aims to introduce the topic of operational modal analysis to non-specialists on the subject. First of all, it is stressed the relevance of this experimental technique particularly in the assessment of important civil infrastructure. Then, after a synthesis of required theoretical background, three of the most powerful algorithms for output-only modal identification are presented. The several steps of these identification procedures are illustrated with the processing of data collected on a concrete arch bridge with a span of 280 m. As the use of operational modal analysis in the context of structural health monitoring is a subject under active research, this theme is also introduced and briefly exemplified with data continuously recorded at the same bridge.

  3. Parallel computation of seismic analysis of high arch dam

    Institute of Scientific and Technical Information of China (English)

    Chen Houqun; Ma Huaifa; Tu Jin; Cheng Guangqing; Tang Juzhen

    2008-01-01

    Parallel computation programs are developed for three-dimensional meso-mechanics analysis of fully-graded dam concrete and seismic response analysis of high arch dams (ADs), based on the Parallel Finite Element Program Generator (PFEPG). The computational algorithms of the numerical simulation of the meso-structure of concrete specimens were studied. Taking into account damage evolution, static preload, strain rate effect, and the heterogeneity of the meso-structure of dam concrete, the fracture processes of damage evolution and configuration of the cracks can be directly simulated. In the seismic response analysis of ADs, all the following factors are involved, such as the nonlinear contact due to the opening and slipping of the contraction joints, energy dispersion of the far-field foundation, dynamic interactions of the dam-foundation-reservoir system, and the combining effects of seismic action with all static loads. The correctness, reliability and efficiency of the two parallel computational programs are verified with practical illustrations.

  4. Constructing Active Architectures in the ArchWare ADL

    CERN Document Server

    Morrison, Ron; Balasubramaniam, Dharini; Mickan, Kath; Oquendo, Flavio; Cîmpan, Sorana; Warboys, Brian; Snowdon, Bob; Greenwood, Mark

    2010-01-01

    Software that cannot change is condemned to atrophy: it cannot accommodate the constant revision and re-negotiation of its business goals nor intercept the potential of new technology. To accommodate change in such systems we have defined an active software architecture to be: dynamic in that the structure and cardinality of the components and interactions are not statically known; updatable in that components can be replaced dynamically; and evolvable in that it permits its executing specification to be changed. Here we describe the facilities of the ArchWare architecture description language (ADL) for specifying active architectures. The contribution of the work is the unique combination of concepts including: a {\\pi}-calculus based communication and expression language for specifying executable architectures; hyper-code as an underlying representation of system execution; a decomposition operator to break up and introspect on executing systems; and structural reflection for creating new components and bind...

  5. The Evolution of Protoplanetary Discs in the Arches Cluster

    CERN Document Server

    Olczak, C; Harfst, S; Pfalzner, S; Zwart, S Portegies

    2012-01-01

    Most stars form in a cluster environment. These stars are initially surrounded by discs from which potentially planetary systems form. Of all cluster environments starburst clusters are probably the most hostile for planetary systems in our Galaxy. The intense stellar radiation and extreme density favour rapid destruction of circumstellar discs via photoevaporation and stellar encounters. Evolving a virialized model of the Arches cluster in the Galactic tidal field we investigate the effect of stellar encounters on circumstellar discs in a prototypical starburst cluster. Despite its proximity to the deep gravitational potential of the Galactic centre only a moderate fraction of members escapes to form an extended pair of tidal tails. Our simulations show that encounters destroy one third of the circumstellar discs in the cluster core within the first 2.5 Myr of evolution, preferentially affecting the least and most massive stars. A small fraction of these events causes rapid ejection and the formation of a we...

  6. Modelos ARCH, GARCH y EGARCH: aplicaciones a series financieras

    Directory of Open Access Journals (Sweden)

    Cepeda Cuervo Edilberto

    2008-08-01

    Full Text Available En este artículo se incluye una descripción de los modelos
    ARCH, GARCH y EGARCH, y de los procesos de estimación de sus
    parámetros usando máxima verosimilitud. Se propone un modelo
    alternativo para el análisis de series financieras y se estudian
    las series de precios y de retornos de las acciones de
    Gillette. La selección de modelos usando los criterios AIC y
    BIC permite concluir que, de los modelos considerados el
    GARCH(1,2 es el que mejor explica el comportamiento de los
    precios de las acciones y el EGARCH(2,1 es el que mejor
    explica la serie de los retornos.

  7. Variation in the Branching Pattern of the Superficial Palmar Arch

    Directory of Open Access Journals (Sweden)

    Sumalatha S

    2016-05-01

    Full Text Available In this article we describe a rare variation in the superficial palmar arch (SPA encountered during routine cadaveric dissection. SPA was formed by the superficial branches of ulnar and radial arteries which provided a proper digital branch to the ulnar side of the little finger and three common palmar digital branches to the medial four digits. Additionally a first common digital artery was seen to emerge from the radial side of SPA which further divided into the arteria princeps pollicis and arteria radialis indicis. We also found a small communicating branch between the arteria princeps pollicis and the radial artery in the anatomical snuff box. Such arterial variations in the palm due to alteration in the developmental sequence remains a crucial issue in the reconstructive hand surgeries, especially while dealing with the innovative microsurgical procedures, where these varied patterns act as pivotal points around which successful results of various advanced surgical procedures revolve.

  8. Jaw muscle pain and its effect on gothic arch tracings.

    Science.gov (United States)

    Obrez, A; Stohler, C S

    1996-04-01

    Perceived changes in occlusion and decreased range of motion are often expressed by patients with masticatory muscle pain. The adverse loading of craniomandibular tissues that results from an inadequate maxillomandibular relationship in combination with the coexisting dysfunction is widely regarded as the cause of pain. This study was designed to test whether pain can cause significant changes in position of the mandible and therefore form the basis for any perceived changes in the maxillomandibular relationship. A second objective was to determine whether pain can cause changes in the mandibular range of motion. Five subjects who rated pain intensity on a visual analog scale were used in a single-blind, randomized, repeated-measures study design. Tonic muscle pain was induced by infusion of 5% hypertonic saline solution into the central portion of the superficial masseter muscle. Isotonic saline solution was used as a control, with subjects blinded to the type of substance given. The effect of pain on the position of the apex of the gothic arch tracing, the direction of the lateral mandibular border movements, and the mandibular range of motion was studied in a horizontal plane with minimal occlusal separation. Pain significantly affected the position of the apex of the gothic arch tracing in anterior (F = 11.46, p = 0.03) and transverse (F = 35.0, p = 0.004) directions. Similarly, pain affected the orientation of the mandibular lateral border movements (F = 12.44, p = 0.02) and their magnitude (F = 14.97, p = 0.01). All pain-induced effects proved to be reversible. The observed effect of pain can explain the perceived change of bite that is frequently noted by patients with orofacial pain. This study provided evidence of an alternative causal relationship between pain and changes in occlusal relationship and questions occlusal therapy as treatment, directed toward the elimination of the underlying cause in patients with masticatory muscle pain.

  9. [Biomechanical study on dento-alveolar arch forces].

    Science.gov (United States)

    Onu, Brînduşa; Burlui, V

    2009-01-01

    This study has two major objectives. The first one is to draw attention in an original device especially conceived and designed to measure bite force; the second purpose of the study is represented by proper measurements of individual bite force during bilateral clenching for two lots of patients using this device and comparing the outcomes to those of other similar studies, in order to prove its practical utility. 62 young (20-35 years of age) healthy patients were tested: 35 fully dentured subjects in control group and 27 subjects with various single unit treated edentation, in test group. The two potentiometers from the lateral side of the device are connected to a computer which would measure, register and interpret the outcomes during three different sessions of clenching for each patient. Measured values showed that the mean maximum bilateral bite force in patients with no edentation was, in all cases, higher than in patients with single unit treated edentation for all three sessions. Because the device allows simultaneous bilateral registration of the bite force, during the same session, it is obvious that it can measure also the asymmetry between left and right dental hemi-arches. Therefore, in control group, mean values found in left side were higher (369.36N - 399.75N) than right side (352.18N - 392.15N); an opposite situation was found in test group: higher values were found in right side (313.75N - 329.43N) comparing to left side (310.54N -321.53N). The device proved to be usefull not only for measuring bite force in one region of dental arches, but it is designed to simultaneous register parameters from various regions; the values obtained in this study are similar to those reported by others authors who used more sophisticated devices, so that this simple device proves its usefulness.

  10. Vegetation - San Felipe Valley [ds172

    Data.gov (United States)

    California Department of Resources — This Vegetation Map of the San Felipe Valley Wildlife Area in San Diego County, California is based on vegetation samples collected in the field in 2002 and 2005 and...

  11. Políticas sociales y juventudes: opiniones juveniles en San Luis (Argentina

    Directory of Open Access Journals (Sweden)

    Yussef Becher

    2015-12-01

    Full Text Available El propósito del texto es indagar la relación entre políticas sociales y juventudes en la contemporaneidad. Para ello, se hará referencia a las opiniones de los y las jóvenes de San Luis (Argentina. Es relevante señalar el territorio donde se realiza la investigación, pues el mismo es una construcción que otorga particularidades a las prácticas y relaciones sociales que tienen lugar en el. Los datos pertenecen a dos encuestas desarrolladas en el marco de proyectos de investigación sobre “Culturas juveniles”. Uno de ellos subsidiado por la Agencia Nacional de Promoción Científica y Tecnológica y otro por la Universidad Nacional de San Luis. Ambas instituciones están radicadas en Argentina. En la primera encuesta se abordaron diversos aspectos vinculados a las juventudes en San Luis, entre ellos las políticas sociales. También se aplicó una Escala de Satisfacción con la Calidad de Vida en el País (ESCVP. Tonon, 2009 sobre una muestra exploratoria de jóvenes universitarios.

  12. Hacia un Marco Conceptual Común sobre Trazabilidad en la Cadena de Suministro de Alimentos

    Directory of Open Access Journals (Sweden)

    Dora Lucia Rincón Ballesteros

    2017-05-01

    Full Text Available Contexto: La ausencia de un marco conceptual común sobre trazabilidad en la cadena de suministro de alimentos (CSA, impide su desarrollo de manera unificada. Dicha ausencia ha generado confusión y no ha permitido evidenciar las ventajas sociales y empresariales de implementarla; además, no contar con un marco común en países como Colombia, impide el desarrollo adecuado de políticas públicas. Método: Se realizó una revisión sistemática de la literatura en cuatro etapas: protocolo de búsqueda para consultar artículos de las bases Scopus, Science Direct, ISI Web; revisión y selección de artículos relevantes, extracción de datos en tablas y formatos diseñados para dicho fin y elaboración del marco conceptual. Resultados: Se propone un marco conceptual común que abarca los siguientes aspectos, definición de trazabilidad, características y propiedades, esquemas, unidad de recurso trazable, motivadores y sistemas de captura; para el diseño e implementación de un sistema de trazabilidad en la CSA. Se evalúa la legislación internacional y nacional y se establecen elementos para su implementación. Se ejemplifica el marco conceptual propuesto para la cadena de suministro cárnica que permitiría orientar la implementación de sistemas de trazabilidad en CSA en Colombia. Conclusiones: El marco conceptual para la trazabilidad de CSA puede ser una guía para la implementación y desarrollo en las cadenas alimentarias en el contexto colombiano. Una implementación en cadenas agropecuarias permitirá la diferenciación de origen, lo que puede ser un factor competitivo para aquellos productores que realicen buenas prácticas agrícolas, así como capacidades logísticas efectivas por los demás agentes de la CSA, el efecto de su implementación debe evaluarse en especial en la incidencia sobre posicionamiento de marca y el establecimiento de precios justos, como efecto del rastreo y seguimiento del sistema de trazabilidad. Idioma: Español

  13. 75 FR 39166 - Safety Zone; San Francisco Giants Baseball Game Promotion, San Francisco, CA

    Science.gov (United States)

    2010-07-08

    ... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Safety Zone; San Francisco Giants Baseball Game... Bay off San Francisco, CA in support of the San Francisco Giants Baseball Game Promotion. This safety... Giants will sponsor the San Francisco Giants Baseball Game Promotion on July 16, 2010, on the...

  14. 78 FR 21403 - Notice of Inventory Completion: San Francisco State University NAGPRA Program, San Francisco, CA

    Science.gov (United States)

    2013-04-10

    ... NAGPRA Program, c/o Department of Anthropology, San Francisco State University, 1600 Holloway Avenue, San...: Pursuant to 25 U.S.C. 3001(9), the human remains described in this notice represent the physical remains of... NAGPRA Program, c/o Department of Anthropology, San Francisco State University, 1600 Holloway Avenue, San...

  15. 76 FR 55796 - Safety Zone; TriRock Triathlon, San Diego Bay, San Diego, CA

    Science.gov (United States)

    2011-09-09

    ... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Safety Zone; TriRock Triathlon, San Diego Bay, San Diego.... Basis and Purpose Competitor Group is sponsoring the TriRock Triathlon, consisting of 2000 swimmers....T11-431 Safety Zone; TriRock Triathlon, San Diego Bay, San Diego, CA. (a) Location. The limits of...

  16. 76 FR 45693 - Safety Zone; San Diego POPS Fireworks, San Diego, CA

    Science.gov (United States)

    2011-08-01

    ... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Safety Zone; San Diego POPS Fireworks, San Diego, CA... temporary safety zone on the navigable waters of San Diego Bay in support of the San Diego POPS Fireworks... Diego, CA; telephone (619) 278- 7262, e-mail Shane.E.Jakcson@uscg.mil . If you have questions on viewing...

  17. 78 FR 38584 - Safety Zone; San Diego Symphony Summer POPS Fireworks 2013 Season, San Diego, CA

    Science.gov (United States)

    2013-06-27

    ... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Safety Zone; San Diego Symphony Summer POPS Fireworks 2013 Season, San Diego, CA AGENCY: Coast Guard, DHS. ACTION: Temporary final rule. SUMMARY: The Coast Guard is establishing a safety zone on the navigable waters of San Diego Bay in support of the San Diego...

  18. 76 FR 75908 - Notice of Inventory Completion: The University of California, San Diego, San Diego, CA

    Science.gov (United States)

    2011-12-05

    ... National Park Service Notice of Inventory Completion: The University of California, San Diego, San Diego... California on behalf of the University of California, San Diego, have completed an inventory of human remains... contact the University of California, San Diego. Disposition of the human remains and associated funerary...

  19. 77 FR 42647 - Safety Zone: San Diego Symphony POPS Fireworks; San Diego, CA

    Science.gov (United States)

    2012-07-20

    ... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Safety Zone: San Diego Symphony POPS Fireworks; San Diego, CA AGENCY: Coast Guard, DHS. ACTION: Temporary final rule. SUMMARY: The Coast Guard is establishing a safety zone on the navigable waters of San Diego Bay in support of the San Diego Symphony POPS...

  20. 75 FR 77756 - Safety Zone; San Diego Parade of Lights Fireworks, San Diego, CA

    Science.gov (United States)

    2010-12-14

    ... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Safety Zone; San Diego Parade of Lights Fireworks, San Diego, CA AGENCY: Coast Guard, DHS. ACTION: Temporary final rule. SUMMARY: The Coast Guard is establishing a safety zone upon the navigable water of the San Diego Bay in San Diego, CA in support of the two...

  1. The San Bernabe power substation; La subestacion San Bernabe

    Energy Technology Data Exchange (ETDEWEB)

    Chavez Sanudo, Andres D. [Luz y Fuerza del Centro, Mexico, D. F. (Mexico)

    1997-12-31

    The first planning studies that gave rise to the San Bernabe substation go back to year 1985. The main circumstance that supports this decision is the gradual restriction for electric power generation that has been suffering the Miguel Aleman Hydro System, until its complete disappearance, to give priority to the potable water supply through the Cutzamala pumping system, that feeds in an important way Mexico City and the State of Mexico. In this document the author describes the construction project of the San Bernabe Substation; mention is made of the technological experiences obtained during the construction and its geographical location is shown, as well as the one line diagram of the same [Espanol] Los primeros estudios de planeacion que dieron origen a la subestacion San Bernabe se remontan al ano de 1985. La circunstancia principal que soporta esta decision es la restriccion paulatina para generar energia que ha venido experimentando el Sistema Hidroelectrico Miguel Aleman, hasta su desaparicion total, para dar prioridad al suministro de agua potable por medio del sistema de bombeo Cutzamala, que alimenta en forma importante a la Ciudad de Mexico y al Estado de Mexico. En este documento el autor describe el proyecto de construccion de la subestacion San Bernabe; se mencionan las experiencias tecnologicas obtenidas durante su construccion y se ilustra su ubicacion geografica, asi como un diagrama unifilar de la misma

  2. ARCH-M模型的经验似然估计%Empirical likelihood estimation for ARCH-M models

    Institute of Scientific and Technical Information of China (English)

    孙岩; 李元

    2012-01-01

    This paper deals with the metric of risk aversion.Test statistics are constructed by the empirical likelihood method.Under mild conditions,asymptotic x2 distributions of test statistics are obtained,based on which confidence regions for risk aversion are given.Simulations show that the empirical likelihood method behaves well.%基于ARCH-M模型研究市场总体风险厌恶的度量问题.首先应用经验似然方法构造了检验统计量,并在一定的条件下,证明了所构造的统计量的渐近分布为卡方分布,在此基础上构造了市场总体风险厌恶的置信区间.模拟结果表明,经验似然方法表现良好.

  3. Maxillary Arch Dimension Changes of 3-5 Years Old Filipino Children

    Directory of Open Access Journals (Sweden)

    Abdol Hamid Zafarmand

    2014-11-01

    Full Text Available Background: The purpose of this study was to assess the dental arch dimensions in primary dentition of 3-5 years old Filipino children and determining the existence of sexual dimorphism.Materials and Methods: In this descriptive study, 60 Filipino preschool children aged 3-5 years old were selected from Manila city. Study casts were used for measurements of 3 arch dimensions: bicanine width, bimolar width, and arch length. The analyses were performed to compare values within age-groups and within gender-groups, besides reporting mean and standard deviations. The data were subjected to One-way ANOVA and Student t-test.Results: Significant differences were observed regarding dental arch dimensions among different ages and genders (p<0.05. Comparison between genders showed a statistically significant difference in bicanine width at the age of 4 (p=0.04, in bimolar width at age of 5 (p=0.006, and in arch length at age of 4 (p=0.03 and 5 (p=0.02. Differences within male group for different ages showed only arch length dimension was statistically significant (p=0.021. In females, however the comparison between age-groups also revealed a statistically significant difference in bicanine (p= 0.016 and bimolar widths (p=0.027 dimensions.Conclusion: The present study showed that dental arch dimensions, vary among different ages and genders of children. It also showed that a sexual dimorphism does exist between the gender groups.

  4. Outcomes of single-stage total arch replacement via clamshell incision

    Directory of Open Access Journals (Sweden)

    Ishizaka Toru

    2011-09-01

    Full Text Available Abstract Background Treatment of complex aortic pathologies involving the transverse arch with extensive involvement of the descending aorta remains a surgical challenge. Since clamshell incision provides superior exposure of the entire thoracic aorta, we evaluated the use of this technique for single-stage total arch replacement by arch vessel reconstruction. Methods The arch-first technique combined with clamshell incision was used in 38 cases of aneurysm and aortic disease in 2008 and 2009. Extensive total arch replacement was used with clamshell incision for reconstruction of arch vessels under deep hypothermic circulatory arrest. Results Overall 30-day mortality was 13%. The mean operating time was approximately 8 hours. Deep hypothermia resulted in mean CPB time exceeding 4.5 hours and mean duration of circulatory arrest was 25 minutes. The overall postoperative temporary and permanent neurologic dysfunction rates were 3% and 3% for elective and 3% and 0% for emergency surgery, respectively. All patients except the five who died in hospital were discharged without nursing care after an average post-operative hospital stay of 35 days. Conclusions The arch-first technique, combined with clamshell incision, provides expeditious replacement of the thoracic aorta with an acceptable duration of hypothermic circulatory arrest and minimizes the risk of retrograde atheroembolism by using antegrade perfusion.

  5. The Role of Arch Compression and Metatarsophalangeal Joint Dynamics in Modulating Plantar Fascia Strain in Running.

    Directory of Open Access Journals (Sweden)

    Kirsty A McDonald

    Full Text Available Elastic energy returned from passive-elastic structures of the lower limb is fundamental in lowering the mechanical demand on muscles during running. The purpose of this study was to investigate the two length-modulating mechanisms of the plantar fascia, namely medial longitudinal arch compression and metatarsophalangeal joint (MPJ excursion, and to determine how these mechanisms modulate strain, and thus elastic energy storage/return of the plantar fascia during running. Eighteen runners (9 forefoot and 9 rearfoot strike performed three treadmill running trials; unrestricted shod, shod with restricted arch compression (via an orthotic-style insert, and barefoot. Three-dimensional motion capture and ground reaction force data were used to calculate lower limb kinematics and kinetics including MPJ angles, moments, powers and work. Estimates of plantar fascia strain due to arch compression and MPJ excursion were derived using a geometric model of the arch and a subject-specific musculoskeletal model of the plantar fascia, respectively. The plantar fascia exhibited a typical elastic stretch-shortening cycle with the majority of strain generated via arch compression. This strategy was similar in fore- and rear-foot strike runners. Restricting arch compression, and hence the elastic-spring function of the arch, was not compensated for by an increase in MPJ-derived strain. In the second half of stance the plantar fascia was found to transfer energy between the MPJ (energy absorption and the arch (energy production during recoil. This previously unreported energy transfer mechanism reduces the strain required by the plantar fascia in generating useful positive mechanical work at the arch during running.

  6. The Role of Arch Compression and Metatarsophalangeal Joint Dynamics in Modulating Plantar Fascia Strain in Running.

    Science.gov (United States)

    McDonald, Kirsty A; Stearne, Sarah M; Alderson, Jacqueline A; North, Ian; Pires, Neville J; Rubenson, Jonas

    2016-01-01

    Elastic energy returned from passive-elastic structures of the lower limb is fundamental in lowering the mechanical demand on muscles during running. The purpose of this study was to investigate the two length-modulating mechanisms of the plantar fascia, namely medial longitudinal arch compression and metatarsophalangeal joint (MPJ) excursion, and to determine how these mechanisms modulate strain, and thus elastic energy storage/return of the plantar fascia during running. Eighteen runners (9 forefoot and 9 rearfoot strike) performed three treadmill running trials; unrestricted shod, shod with restricted arch compression (via an orthotic-style insert), and barefoot. Three-dimensional motion capture and ground reaction force data were used to calculate lower limb kinematics and kinetics including MPJ angles, moments, powers and work. Estimates of plantar fascia strain due to arch compression and MPJ excursion were derived using a geometric model of the arch and a subject-specific musculoskeletal model of the plantar fascia, respectively. The plantar fascia exhibited a typical elastic stretch-shortening cycle with the majority of strain generated via arch compression. This strategy was similar in fore- and rear-foot strike runners. Restricting arch compression, and hence the elastic-spring function of the arch, was not compensated for by an increase in MPJ-derived strain. In the second half of stance the plantar fascia was found to transfer energy between the MPJ (energy absorption) and the arch (energy production during recoil). This previously unreported energy transfer mechanism reduces the strain required by the plantar fascia in generating useful positive mechanical work at the arch during running.

  7. A Spanish Borderlands Community: San Antonio.

    Science.gov (United States)

    Teja, Jesus F. de la

    2000-01-01

    Discusses the founding of San Antonio, originally San Antonio de Bexar, which, in 1718, came into being as a military settlement involved in Spanish imperial defensive measures. Focuses on the development and continued growth of San Antonio, Texas's most populous city in the 19th century. (CMK)

  8. Una perspectiva filosófica de la ciencia hoy en día: Entrevista con Alfredo Marcos

    OpenAIRE

    2012-01-01

    [ES] En el invierno de 2012, el Prof. Alfredo Marcos respondió una serie de preguntas sobre filosofía de la ciencia para el primer número de Disputatio. En esta entrevista, Alfredo Marcos presenta los fundamentos históricos y filosóficos de la ciencia en sentido amplio y nos presenta cómo funciona su aplicación en diferentes ámbitos: comunicación de la ciencia, investigación clínica, política ambiental, poética de la ciencia. [EN] At the winter of 2012, the Prof. Dr. Alfredo Marcos answere...

  9. Seismic response analysis of arch dam-water-rock foundation systems

    Institute of Scientific and Technical Information of China (English)

    杜修力; 王进廷

    2004-01-01

    The effect of water compressibility on the seismic responses of arch dams is not well understood. In this paper, a numerical model is developed with rigorous representation of the dynamic interaction between arch dam-waterrock foundation. The model is applied to the seismic response analysis of an arch dam with a height of 292m designed to a seismic intensity of Ⅸ. It is shown that consideration of the water compressibility clearly decreases the stress responses at key positions of the dam, while the added mass model gives a conservative estimate.

  10. Feeding an infant with high arched palate by high flow rate bottle nipple.

    Science.gov (United States)

    Eren, Abdulkadir; Bilgin, Huseyin; Kara, Semra

    2015-01-01

    For infants with high arched palate, feeding is one of the most immediate challenges faced by parents and caretakers. General suggestions for feeding in infants with cleft palate may be adapted to infants with high arched palate. These include oral feeding facilitation techniques and special feeding tools. Here we present a newborn with a high arched palate and serious feeding problems who was fed easily by a large size and a large hole nipple, ordinarily used for infants older than 6 months, instead of specialized feeding equipment.

  11. Axillary artery counter-current aortography in the newborn with aortic arch obstruction

    Energy Technology Data Exchange (ETDEWEB)

    Lau, K.C.; Lo, R.N.S.; Leung, M.P.

    1989-08-01

    13 newborn infants with aortic coarctation were evaluated by counter-current aortographic technique. The right radial or brachial artery approach (2 cases in each group) did not give successful aortic arch imaging while the right axiallary artery approach resulted in adequate imaging in each of 9 cases investigated. In 2, the axillary artery was transiently weakened but returned to normal within 24 hours. No other complications were encountered. Axillary artery counter-current aortography is a safe and relatively non-invasive procedure which can be used to image the aortic arch in the newborn babies when other non-invasive diagnosis of aortic arch obstruction is tentative. (orig.).

  12. The knee alignment and the foot arch in patients with Turner syndrome.

    Science.gov (United States)

    Trzcińska, Dorota; Olszewska, Elżbieta; Wiśniewski, Andrzej; Milde, Katarzyna; Madej, Marcin

    2011-01-01

    It is established that patients with Turner syndrome (TS) have numerous defects of the skeletal system, including in the lower extremities structure. However, there are not enough studies in the literature about knee alignment and foot arches in girls and women with TS. Assessment of knees and feet in girls and women with TS. Sixty-two girls and women with TS were examined. The mean chronological age of the patients was 15.61±5.27 years, ranging from 6.36 to 27.04-years-old. All patients underwent physical examinations of their knees and feet. Additionally, almost 70% (n=42) underwent plantographic examinations and measurement of their heel angle and Clarke's angle. The formation of the foot in patients with TS was related to the reference values developed on the basis of studies of healthy girls (n=92). In women whose knee conditions were assessed only on the basis of a physical examination, a drawer test was performed each time to assess the stability of the knee ligament systems. In over 60% of patients with TS, incorrect knee alignment, primarily in the form of genu valgum (knock-knee), was diagnosed. At the same time, 60% of the patients tested only in physical examinations were diagnosed with knee ligament instabilities (positive drawer test). Physical examinations showing foot arch malformation - in equal proportion splay-foot and low-arched - were found in almost two-thirds of women with TS. However, on the basis of plantography, abnormalities in the longitudinal arch of the foot were diagnosed in 60% of patients with TS, and abnormalities in the transverse arch of the foot were diagnosed in 80% of patients with TS. In patients with TS, the occurrence of the following is characteristic: 1. Genu valgum of knees and heels; 2. Frequent cases of abnormally formed longitudinal and transverse arches of the foot, with the longitudinal arch of the foot usually being reduced, while the transverse arch is excessively elevated; 3. Asymmetry involving a frequent

  13. Development of generalized space time autoregressive integrated with ARCH error (GSTARI - ARCH) model based on consumer price index phenomenon at several cities in North Sumatera province

    Science.gov (United States)

    Bonar, Hot; Ruchjana, Budi Nurani; Darmawan, Gumgum

    2017-03-01

    Inflation is defined as a situation where generally the price of goods has increased continuously. In order to measure inflation, Statistics of Indonesia (BPS) use the Consumer Price Index (CPI). Inflation in North Sumatera Province monitored through CPI change in several major cities which are Medan, Pematang Siantar, Sibolga, and Padangsidimpuan. The CPI value in these cities was affected by the previous times value and have correlation between one another. In data modeling, data that have correlation in time and spatial is called space time data. One of data modeling methods that can be used to analyze the space time data is the Generalized Space Time Autoregressive (GSTAR) which was introduced by Ruchjana (2002) with assumed constant variance error. Furthermore, time series data such as inflation often have high volatility which implicates on an inconstant value of variance and error. Nainggolan (2011) was introduced GSTAR model with an Autoregressive Conditional Heteroscedastic (ARCH) error, called GSTAR-ARCH model. In this model, the mean equation was modeled by GSTAR model and the variance equation was modeled by the ARCH model. For non stationarity data, we apply GSTAR-Integrated with ARCH error (GSTARI-ARCH) model, and the estimation parameters are using Generalized Least Square (GLS) method as introduced by Nainggolan (2011).

  14. Marco Común Europeo de Referencia en el Aprendizaje de Lenguas Extranjeras

    OpenAIRE

    Díaz-Corralejo, Joaquín

    2003-01-01

    En 1990, el Consejo de Europa propuso a varios paises la experimentación del nuevo entorno metodológico para la enseñanza / aprendizaje de las lenguas en el siglo XXI: el Marco Común Europeo de Referencia para el Aprendizaje, la Enseñanza y la Evaluación de las lenguas extranjeras. Más de quince países respondieron a este reto, España no estaba entre ellos. En 2001, se presenta la traducción al español de dicho Marco. El presente articulo se centra en la descripción de los fimdamentos meto...

  15. Identidad de los abogados y formación universitaria en un marco de crisis

    Directory of Open Access Journals (Sweden)

    Marcelo Héctor Efrón

    2009-12-01

    Full Text Available El presente trabajo, realizado en el marco del Seminario sobre Perspectivas Filosófico-Políticas de la Educación Contemporánea a cargo del Prof. Dr. Carlos Cullen, tiene como objetivo efectuar una breve una aproximación a la idea de identidad de los abogados, para posteriormente abordar algunos enfoques sobre el derecho y justicia, haciendo un rápido pasaje hacia una muy simplificada referencia a la formación de abogados en el marco de lo que entendemos como una crisis de identidad profesional y, que se presenta temporalmente acompañando una revisión de la justicia como valor y como fin esencial del Estado.

  16. Redes sociais como novo marco interpretativo das mobilizações coletivas contemporâneas

    Directory of Open Access Journals (Sweden)

    Paulo Henrique Martins

    Full Text Available Os rumos dos movimentos sociais e das mobilizações sociais e culturais na contemporaneidade assinalam o enfraquecimento dos antigos marcos teóricos positivistas que subordinavam a constituição das práticas identitárias a certos critérios reducionistas, como o do utilitarismo econômico e o da ideologia do progresso. No entanto, as mudanças recentes produzidas pelos processos de desterritorialização e reterritorialização nas sociedades complexas impõem novos tipos de atores, conflitos e mediações, sendo as redes uma forma social exemplar dessas mudanças. Mas as redes não se impõem automaticamente como um novo marco interpretativo. É importante explicar que elas são objeto de embate no campo intelectual e que podem conhecer leituras diversas, tanto utilitaristas como antiutilitaristas.

  17. Desarrollo latinoamericano en el marco de la globalización

    Directory of Open Access Journals (Sweden)

    Germán Pinazo

    2011-01-01

    Full Text Available Desde hace varios años que el pensamiento heterodoxo latinoamericano en lo relativo a la problemática del desarrollo se encuentra atravesado por profundas discusiones. En este marco, el primer objetivo de este trabajo es repasar críticamente las ideas centrales de lo que entendemos es la formación de un nuevo consenso sobre la temática, que bajo el nombre de neoestructuralismo o neodesarrollismo, pretende ser tanto una crítica al recetario neoliberal, como una superación del viejo desarrollismo. Un segundo objetivo es vincular este repaso con el análisis de las transformaciones del sector automotriz argentino. Con ello se busca mostrar la necesidad de retomar el método histórico como herramienta para reconocer las posibilidades de desarrollo de los países latinoamericanos en el marco de la división internacional del trabajo.

  18. [Establishment and biomechanical analysis of three-dimensional nonlinear finite element model of three-pieces segment arch].

    Science.gov (United States)

    Lu, Shijun; Wang, Zhendong; Ni, Xiaoyu; Wang, Lin

    2013-02-01

    To reconstruct a three-dimensional nonlinear finite element model of mandibular teeth with three-pieces segment arch, and analyze the mechanical properties of intrusive arch and the biomechanical characteristics of three-pieces segment arch. Three-dimensional nonlinear finite element model of mandible with three-pieces segment arch was reconstructed by multi-slice spiral CT scanning, Mimics, CATIA and Anasys software. Then, the mechanical properties of intrusive arch, the movement trend and stress distribution of three-pieces segment arch were calculated by Anasys software. In the range of 5 degrees-25 degrees, with the degree of intrusive arch increased, the force of intrusive arch also increased rapidly. The maximal force was 0.604 8 N in 30 degrees; the force was about 0.59 N in 30 degrees-65 degrees range. In condition of three-pieces segment arch mechanics, lateral incisor tipped labially and intruded; the first moral tipped distally and rotating; other teeth did not move clearly. The largest stress distribution in the whole arch was in the one-third labial cervical area of the lateral incisor root and the root bifurcations of first moral. Under an appropriate intrusive force, three-pieces segment arch can intrude incisors and control the extrusion of posterior teeth. It can be used to correct the deep overbite, especially with high mandibular planes, gummy smile or adult patients.

  19. Convair Astronautics, San Diego (California

    Directory of Open Access Journals (Sweden)

    Pereira & Luckmam, Arquitectos

    1960-05-01

    Full Text Available Este brillante y espectacular complejo industrial se ha creado especialmente para la investigación y fabricación de cohetes intercontinentales y vehículos del espacio de las Fuerzas Aéreas de los EE. UU., en las proximidades de San Diego y cerca del campo de pruebas de Sycamore Canyon.

  20. Kaasaegses kunstis valitseb turvalisus / Marco Scotini, Andris Brinkmanis ; intervjueerinud Eero Epner

    Index Scriptorium Estoniae

    Scotini, Marco, 1964-

    2010-01-01

    Intervjuu Milano Nuova Accademia di Belle Art'i visuaalkunstide ja kuraatoriõppe osakonna juhataja, kaasaegse kunsti ajaloo ja kuraatoriõppe professori Marco Scotini ja sama akadeemia õppejõu Andris Birkmanisega. M. Scotini pidas Kumus loengu "Kuraator loomemajanduse ajastul. Teisel pool institutsionaalset kriitikat". Muutunud kaasaja kunstimaailmast: institutsioonide kontrollist, estetiseeritud kunsti valitsemisest biennaalidel, riigi kontrollimehhanismi asendumisest majanduslikuga, kuraatoritööst, retrospektiivnäituste rohkusest jm.

  1. Los marcos de referencia en el posicionamiento satelital a tiempo real

    OpenAIRE

    Camisay, Maria Fernanda; Striewe Dieste, Esteban; Mackern Oberti, María Virginia

    2016-01-01

    Los servicios de posicionamiento satelital a tiempo real (RT), utilizan el protocolo de internet NTRIP (Networked Transport of RTCM via Internet Protocol) para transmitir correcciones diferenciales provenientes de estaciones GNSS permanentes. Los usuarios pueden posicionarse de manera precisa en el instante de medición y obtener coordenadas en el marco de referencia implícito en las correcciones recibidas. Por lo tanto, una correcta configuración de los servicios RT, garantizará a los usuar...

  2. Kaasaegses kunstis valitseb turvalisus / Marco Scotini, Andris Brinkmanis ; intervjueerinud Eero Epner

    Index Scriptorium Estoniae

    Scotini, Marco, 1964-

    2010-01-01

    Intervjuu Milano Nuova Accademia di Belle Art'i visuaalkunstide ja kuraatoriõppe osakonna juhataja, kaasaegse kunsti ajaloo ja kuraatoriõppe professori Marco Scotini ja sama akadeemia õppejõu Andris Birkmanisega. M. Scotini pidas Kumus loengu "Kuraator loomemajanduse ajastul. Teisel pool institutsionaalset kriitikat". Muutunud kaasaja kunstimaailmast: institutsioonide kontrollist, estetiseeritud kunsti valitsemisest biennaalidel, riigi kontrollimehhanismi asendumisest majanduslikuga, kuraatoritööst, retrospektiivnäituste rohkusest jm.

  3. Genetic variants of MARCO are associated with susceptibility to pulmonary tuberculosis in a Gambian population

    OpenAIRE

    Lack, Nathan A.; Bowdish, Dawn M. E.; Sakamoto, Kaori; Hill, Philip C.; Sirugo, Giorgio; Newport, Melanie J.; Gordon, Siamon; Hill, Adrian V. S.; Vannberg, Fredrick O.

    2013-01-01

    Background The two major class A scavenger receptors are scavenger receptor A (SRA), which is constitutively expressed on most macrophage populations, and macrophage receptor with collagenous structure (MARCO), which is constitutively expressed on a more restricted subset of macrophages, (e.g. alveolar macrophages) but whose expression increases on most macrophages during the course of infection. Although the primary role of SRA appears to be clearance of modified host proteins and lipids,...

  4. EN BUSCA DE UN BUEN MARCO DE REFERENCIA PREDICTIVO PARA LA INFLACIÓN EN CHILE

    Directory of Open Access Journals (Sweden)

    Pablo Pincheira

    2012-01-01

    Full Text Available En este artículo investigamos la precisión y estabilidad de las proyecciones de corto plazo de la inflación en Chile provenientes de una determinada subfamilia exten-dida de modelos SARIMA que denominamos ESARIMA. Las proyecciones ESARIMAson comparadas con las provenientes de encuestas y de simples modelos univaria-dos, incluyendo algunos que han sido tradicionalmente utilizados como marcos de referencia predictivos en la bibliografía. Nuestros resultados indican que el error cuadrático medio fuera de muestra de las proyecciones ESARIMA es menor que el de los métodos univariados considerados, cuando el horizonte predictivo varía de 1 a 4 meses. En horizontes superiores, los peores representantes de nuestra familia ESARIMA comienzan a ser superados por los mejores marcos de referencia univaria-dos. Al comparar con la encuesta de expectativas económicas, los resultados van en la dirección opuesta: la encuesta es más precisa que la subfamilia ESARIMA en todos los horizontes. En general nuestros resultados son estadísticamente significativos a niveles de confianza usuales. Observamos también que la familia ESARIMA ofrece proyecciones más estables que los marco de referencia univariados, pero menos estables que las provenientes de la encuesta de analistas.

  5. A Review of Diseases of Aortic Arch: Diagnosis by CTA

    Directory of Open Access Journals (Sweden)

    S. Sabouri

    2007-05-01

    Full Text Available The noninvasive revolution in cardiovascular imaging has altered the diagnostic algorithm for all types of acquired and congenital cardiovascular disease. CT techniques are commonly used in the diagnosis of aortic arch and its major branch vessels as well as thoracic and abdominal aortic diseases. CT angiogra-phy combines with CT scans obtained detailed in-formation on precise morphology and extent of dis-ease. Studies were performed on an MDCT unit (4row GE light speed. In infants and small children, the seda-tion rate for CT was lower than that used for patients of similar age undergoing cardiac MR imaging. Seda-tion times ranged between 5 and 10 min, in the pedi-atric population, MDCT was performed with a 1- to 2.5-mm slice thickness in adults, MDCT was per-formed with a 2.5-mm slice thickness with 50% re-construction overlap, pitch 0.75-1.CT angiographic studies were performed with nonionic contrast mate-rial with iodine concentrations of 300 mg/mL admin-istered at a dose of 2-3 mL/kg. Contrast material was injected by power injection, followed by normal sa-line, an automated bolus-tracking technique was used at an injection rate of 2-4 mL/sec. the bolus-tracking device was placed on the ascending aorta. For pa-tients with thoracic outlet syndrome, CT angiogram was performed with neutral position of arm and ab-duction of the arm. Radiologist studied the CT image data in an axial cine paging mode as well as multiplanar reformations. To plan effective management of Aorta disease, CTA is displayed using a combination of 3D images, such as those obtained by multiplanar reformation (MPR, curved planar reformation (CPR, maximum intensity projection (MIP and volume rendering (VR. Case reports include coarctation of aorta, vascular ring, right sided aorta, interrupted aortic arch, abber-ant vessels, paitent ductus arteriosus, subclavian steel syndrome, aneurysm, dissection, thoracic outlet syn-drome, arthritis and atherosclerotic stenosis.

  6. Clinical trial investigating success rates for polyether and vinyl polysiloxane impressions made with full-arch and dual-arch plastic trays.

    Science.gov (United States)

    Johnson, Glen H; Mancl, Lloyd A; Schwedhelm, E Ricardo; Verhoef, Douglas R; Lepe, Xavier

    2010-01-01

    Success rates for making fixed prosthodontic impressions based on material and tray selection are not known. The purpose of this clinical study was to compare first impression success rates for 2 types of impression material and 2 impression tray systems. Dual-viscosity impressions were made with a vinyl polysiloxane (VPS) (Aquasil Ultra Monophase/Aquasil Ultra XLV) and a polyether (PE) (Impregum Penta Soft HB/Impregum Garant Soft LB) impression material. The first impression made was evaluated for success or failure using developed criteria. Fifty senior dental students participated. The type of impression material alternated for each new patient. A full-arch perforated plastic (President Tray) or a plastic dual-arch impression tray (Tri-Bite) was used based on clinical guidelines. Impression success rates were compared using logistic regression, fitted using the method of generalized estimating equations (alpha=.05). One hundred ninety-one impressions were evaluated, and the overall success rate was 61% for VPS and 54% for PE (P=.39). Additional regression analyses, adjusted for potential confounders, did not indicate a difference between the 2 systems (P=.35). There was little difference in success rates between the 2 materials when a full-arch tray was used (50% versus 49% success, P=.89), whereas a larger difference was apparent with the use of dual-arch trays (70% success with VPS versus 58% success with PE, P=.21). The most common critical defect was located on the preparation finish line (94%), and the most common operator error was inadequate gingival displacement (15%). There was little difference in success rates between VPS and PE when full-arch impression trays were used, but there was greater success when using VPS with dual-arch trays. For single teeth, the trend favored VPS, but when more than one prepared tooth per impression was involved, the success rate was higher for PE. Copyright 2010 The Editorial Council of the Journal of Prosthetic

  7. Right aortic arch with aberrant left innominate artery arising from Kommerell's diverticulum*

    Science.gov (United States)

    Faistauer, Ângela; Torres, Felipe Soares; Faccin, Carlo Sasso

    2016-01-01

    We report a case of an uncommon thoracic aorta anomaly-right aortic arch with aberrant left innominate artery arising from Kommerell's diverticulum-that went undiagnosed until adulthood. PMID:27777481

  8. Effective way to reconstruct arch bridges using concrete walls and transverse strands

    Science.gov (United States)

    Klusáček, Ladislav; Pěkník, Robin; Nečas, Radim

    2017-09-01

    There are more than 500 masonry arch bridges in the Czech Road system and about 2500 in the Czech Railway system. Many of them are cracked in the longitudinal (span) direction. The barrel vaults are separated by the cracks into partial masonry arches without load bearing connection in transverse direction. These constructions are about 150 years old and they are also too narrow for the current road system. This paper presents a strengthening method for masonry arch bridges using transverse post-tensioning. This method is very useful not only for strengthening in the transverse direction, but widening of masonry arches can be taken as secondary effect especially in case of road bridges. Several bridges were successfully repaired with the use of this system which seems to be effective and reliable.

  9. RCC Arch Dam Structure on the Taxi River and Water Storage Measure During Construction

    Institute of Scientific and Technical Information of China (English)

    刘光廷; 李鹏辉; 胡昱; 张富德; 谢树南

    2002-01-01

    The new structure of roller compacted concrete (RCC) arch dams is presented for extremely cold and earthquake prone areas. The influence of construction plans and improved materials on the stresses in the Taxi River dam is also given. Earlier impoundment of water is shown to not only benefit the engineering design but also improve the stresses during construction in winter. Low cement content in the concrete and artificial short joints improved the monolithic structure and the transmitted forces. The concrete plug installed in the first cooled part of the arch dam provides excellent force transmission in the arch, which increases the monolith of the earlier arch, reduces the increasing thermal stresses that occur later, and improves the deformation flexibility of the dam.

  10. Traumatic aortic arch false aneurysm after blunt chest trauma in a motocross rider.

    Science.gov (United States)

    Bizzarri, Federico; Mattia, Consalvo; Ricci, Massimo; Chirichilli, Ilaria; Santo, Chiara; Rose, David; Muzzi, Luigi; Pugliese, Giuseppe; Frati, Giacomo; Sartini, Patrizio; Ferrari, Riccardo; Della Rocca, Carlo; Laghi, Andrea

    2008-05-01

    This article details a case report of a traumatic aortic arch false aneurysm after blunt chest trauma. Thoracic aorta false aneurysms are a rare and life-threatening complication of aortic surgery, infection, genetic disorders and trauma.

  11. Lhermitte sign during yawning associated with congenital partial aplasia of the posterior arch of the atlas

    National Research Council Canada - National Science Library

    Sagiuchi, T; Tachibana, S; Sato, K; Shimizu, S; Kobayashi, I; Oka, H; Fujii, K; Kan, S

    2006-01-01

    .... It was associated with congenital partial aplasia of the posterior arch of the atlas. Cervical multisection-detector CT myelography during yawning showed compression of the upper cervical cord due to the inward mobility of the isolated posterior tubercle...

  12. [An original "double-arched" radial forearm flap for soft palate reconstruction. Case report].

    Science.gov (United States)

    Pauchot, J; Feuvrier, D; Pluvy, I; Floret, F; Mauvais, O

    2016-12-01

    Reconstruction of the soft palate after oncologic resection remains a surgical challenge. Speech and swallowing problems are the consequences of velopharyngeal incompetence following soft palate resection. Free tissue transfer like radial forearm flaps can be used in larger defects for complex reconstruction. The conformation of the flap in order to be closer to the shape of the soft palate improves the functional outcome. In the same way, we describe an original "double-arched" flap design. A double arch of the exact length of the soft palate tumor resection is designed. After suturing, the flap spontaneously formed a double arch of the exact dimensions of the resected piece. The patient achieved good functional recovery without any surgical complications. The original "double-arched" forearm flap design allows a tailored reconstruction with exactly the same shape and dimensions, preserving the functional requirements of speech and deglutition. Copyright © 2016 Elsevier Masson SAS. All rights reserved.

  13. Incidence and Variants of Posterior Arch Defects of the Atlas Vertebra

    Directory of Open Access Journals (Sweden)

    Sebastian Guenkel

    2013-01-01

    Full Text Available In order to describe the incidence and existing variants of congenital anomalies of the atlas vertebrae in a Caucasian population, we examined 1069 CT scans of the upper cervical spine. We found 41 cases with altered atlas vertebrae, representing 3.8% of all analyzed patients. With 83% of all found anomalies, the predominant type is characterized by a small dorsal cleft (3.2% of all patients. Rare varieties feature unilateral or bilateral dorsal arch defects, combined anterior and posterior clefts (0.2% of all patients or total erratic atlas vertebra malformation (0.1% of all patients. Atlas arch defects are found nearly 4% at the time. Most anomalies affect the posterior arch, whereas the anterior arch or both are rarely affected. Totally irregular C1 vertebrae are extremely infrequent.

  14. INSPIRE and MarCO - Technology Development for the First Deep Space CubeSats

    Science.gov (United States)

    Klesh, Andrew

    2016-07-01

    INSPIRE (Interplanetary NanoSpacecraft Pathfinder In a Relevant Environment) and MarCO (Mars Cube One) will open the door for tiny spacecraft to explore the solar system. INSPIRE serves as a trailblazer, designed to demonstrate new technology needed for deep space. MarCO will open the door for NanoSpacecraft to serve in support roles for much larger primary missions - in this case, providing a real-time relay of for the InSight project and will likely be the first CubeSats to reach deep space. Together, these four spacecraft (two for each mission) enable fundamental science objectives to be met with tiny vehicles. Originally designed for a March, 2016 launch with the InSight mission to Mars, the MarCO spacecraft are now complete and in storage. When launched with the InSight lander from Vandenberg Air Force Base, the spacecraft will begin a 6.5 month cruise to Mars. Soon after InSight itself separates from the upper stage of the launch vehicle, the two MarCO CubeSats will deploy and independently fly to Mars to support telecommunications relay for InSight's entry, descent, and landing sequence. These spacecraft will have onboard capability for deep space trajectory correction maneuvers; high-speed direct-to-Earth & DSN-compatible communications; an advanced navigation transponder; a large deployable reflect-array high gain antenna; and a robust software suite. This talk will present an overview of the INSPIRE and MarCO projects, including a concept of operations, details of the spacecraft and subsystem design, and lessons learned from integration and test. Finally, the talk will outline how lessons from these spacecraft are already being utilized in the next generation of interplanetary CubeSats, as well as a brief vision of their applicability for solar system exploration. The research described here was carried out at the Jet Propulsion Laboratory, Caltech, under a contract with the National Aeronautics and Space Administration (NASA).

  15. Effects of Asthma and Inhalation corticosteroids on the dental arch morphology in children

    Directory of Open Access Journals (Sweden)

    S S Kumar

    2012-01-01

    Full Text Available Background: Hereditary, environmental and developmental factors play an important role in dentofacial development, as well as the initiation of malocclusion disorder. Allergic phenomenon such as asthma that induces an alternative mode of breathing in patients is a contributing factor in development of the dental arch. Aim: Our aim in this study was to evaluate the dentoalveolar morphology in asthmatic children and to analyze the effects of asthmatic medications on the dental arch. Setting and Design : This study is centered on 44 asthmatic children aged between 6-12 years from J.S.S Hospital, Mysore. Selected variables from model analysis of the casts of the asthmatic group were subjected to comparison with those of the non-asthmatic group, which comprised of 44 non-asthmatic children. Selected parameters were arch width, arch length and palatal depth. Materials and Methods : Impressions of upper and lower arches were made with rubber based impression material. A sliding digital caliper was used to measure the casts for arch width and arch length. A palatal depth gauge was used to measure the palatal depth. Statistical Analysis : Differences in arch widths, arch lengths and palatal depths between asthmatics and non-asthmatics groups were evaluated by independent sample t-tests. Chi-square test was applied to assess the frequency of occurrence of malocclusion in the asthmatic children. Result: The results obtained revealed that the arch length and palatal depth of asthmatic group had higher values compared to that of non-asthmatic groups for both age groups (6 to 8-year-old males and females, 10 to 12-year-old males and females. Inter molar width showed a significant lower value in asthmatics in the maxillary arches of 10 to 12-year-old females. Fifty percent of the asthmatic children aged 10 to 12-years had open-bite. Children under regular medication showed significant deviation in the dentoalveolar morphology as compared to those under

  16. Development of the human aortic arch system captured in an interactive three-dimensional reference model.

    Science.gov (United States)

    Rana, M Sameer; Sizarov, Aleksander; Christoffels, Vincent M; Moorman, Antoon F M

    2014-06-01

    Variations and mutations in the human genome, such as 22q11.2 microdeletion, can increase the risk for congenital defects, including aortic arch malformations. Animal models are increasingly expanding our molecular and genetic insights into aortic arch development. However, in order to justify animal-to-human extrapolations, a human morphological, and molecular reference model would be of great value, but is currently lacking. Here, we present interactive three-dimensional reconstructions of the developing human aortic arch system, supplemented with the protein distribution of developmental markers for patterning and growth, including T-box transcription factor TBX1, a major candidate for the phenotypes found in patients with the 22q11.2 microdeletion. These reconstructions and expression data facilitate unbiased interpretations, and reveal previously unappreciated aspects of human aortic arch development. Based on our reconstructions and on reported congenital anomalies of the pulmonary trunk and tributaries, we postulate that the pulmonary arteries originate from the aortic sac, rather than from the sixth pharyngeal arch arteries. Similar to mouse, TBX1 is expressed in pharyngeal mesenchyme and epithelia. The endothelium of the pharyngeal arch arteries is largely negative for TBX1 and family member TBX2 but expresses neural crest marker AP2α, which gradually decreases with ongoing development of vascular smooth muscle. At early stages, the pharyngeal arch arteries, aortic sac, and the dorsal aortae in particular were largely negative for proliferation marker Ki67, potentially an important parameter during aortic arch system remodeling. Together, our data support current animal-to-human extrapolations and future genetic and molecular analyses using animal models of congenital heart disease. © 2013 Wiley Periodicals, Inc.

  17. Continuum analysis of common branching patterns in the human arch of the aorta.

    Science.gov (United States)

    Zamir, M; Sinclair, P

    1990-01-01

    A model is proposed for describing common variations in the arrangement of branches on the arch of the human aorta, and the model is used to analyze data from 123 human arches. The analysis allows the observed variations to fall freely along a continuous spectrum, rather than be confined to discrete categories as is commonly done at present. The results thus describe these variations in a more natural way and throw some new light on their likely source.

  18. Role of Soil Hysteresis in Impedance Testing as Applied to Buried Arches

    Science.gov (United States)

    1990-02-01

    information . I Add the individual listed to your distribution list. [] Delete the cited organization/individual. El Change of address. NAME: ORGANIZATION...arch structure shows that the backfill soil hysteretic behavoir is a dominant factor in explaining the absence of resonance in arch tests. ~ n0...TECHNICAL INFORMATION CENTER ATTN: ASMS 2CYS ATTN: DTIC/FDAB ATTN: MYE STRATEGIC AND THEATER NUCLEAR FORCES WEAPONS LABORATORY ATTN: DR E SEVIN ATTN

  19. Edentulism and shortened dental arch in Brazilian elderly from the National Survey of Oral Health 2003

    Directory of Open Access Journals (Sweden)

    Marco Túlio Freitas Ribeiro

    2011-10-01

    Full Text Available OBJECTIVE: To describe the distribution of edentulism and estimate the prevalence of functional dentition and shortened dental arch among elderly population. METHODS: A population-based epidemiological study was carried out with a sample of 5,349 respondents aged 65 to 74 years obtained from the 2002 and 2003 Brazilian Ministry of Health/Division of Oral Health survey database. The following variables were studied: gender; macroregion of residence; missing teeth; percentage that met the World Health Organization goal for oral health in the age group 65 to 74 years (50% having at least 20 natural teeth; presence of shortened dental arch; number of posterior occluding pairs of teeth. The Chi-square test assessed the association between categorical variables. The Kruskal-Wallis and Mann-Whitney tests were used to assess differences of mean between number of posterior occluding pairs teeth, macro-region and gender. RESULTS: The elderly population had an average of 5.49 teeth (SD: 7.93 with a median of 0. The proportion of completely edentulous respondents was 54.7%. Complete edentulism was 18.2% in the upper arch and 1.9% in the lower arch. The World Health Organization goal was achieved in 10% of all respondents studied. However, only 2.7% had acceptable masticatory function and aesthetics (having at least shortened dental arch and a mean number of posterior occluding pairs of 6.94 (SD=2.97. There were significant differences of the percentage of respondents that met the World Health Organization goal and presence of shortened dental arch between men and women. There were differences in shortened dental arch between macroregions. CONCLUSIONS: The Brazilian epidemiological oral health survey showed high rate of edentulism and low rate of shortened dental arch in the elderly population studied, thus suggesting significant functional and aesthetic impairment in all Brazilian macroregions especially among women.

  20. Goldenhar syndrome with right circumflex aortic arch, severe coarctation and vascular ring in a twin pregnancy

    Directory of Open Access Journals (Sweden)

    Elaheh Malakan Rad

    2014-01-01

    Full Text Available Goldenhar syndrome (GS or oculo-auriculo-vertebral dysplasia (OAVD, involves a wide variety of organ systems. Cardiovascular anomalies are among the frequent malformations. The purpose of this report is to introduce a male case of a dizygotic twin pregnancy with GS and right circumflex aortic arch (RCAA, severe coarctation, hypoplastic aortic arch, aberrant right subclavian artery, vascular ring, bilateral renal artery stenosis, and mild Dandy-Walker syndrome. The embryology of RCAA and coarctation is revisited.

  1. Goldenhar syndrome with right circumflex aortic arch, severe coarctation and vascular ring in a twin pregnancy

    OpenAIRE

    Elaheh Malakan Rad

    2014-01-01

    Goldenhar syndrome (GS) or oculo-auriculo-vertebral dysplasia (OAVD), involves a wide variety of organ systems. Cardiovascular anomalies are among the frequent malformations. The purpose of this report is to introduce a male case of a dizygotic twin pregnancy with GS and right circumflex aortic arch (RCAA), severe coarctation, hypoplastic aortic arch, aberrant right subclavian artery, vascular ring, bilateral renal artery stenosis, and mild Dandy-Walker syndrome. The embryology of RCAA and co...

  2. Goldenhar syndrome with right circumflex aortic arch, severe coarctation and vascular ring in a twin pregnancy.

    Science.gov (United States)

    Rad, Elaheh Malakan

    2014-09-01

    Goldenhar syndrome (GS) or oculo-auriculo-vertebral dysplasia (OAVD), involves a wide variety of organ systems. Cardiovascular anomalies are among the frequent malformations. The purpose of this report is to introduce a male case of a dizygotic twin pregnancy with GS and right circumflex aortic arch (RCAA), severe coarctation, hypoplastic aortic arch, aberrant right subclavian artery, vascular ring, bilateral renal artery stenosis, and mild Dandy-Walker syndrome. The embryology of RCAA and coarctation is revisited.

  3. Goldenhar syndrome with right circumflex aortic arch, severe coarctation and vascular ring in a twin pregnancy

    Science.gov (United States)

    Rad, Elaheh Malakan

    2014-01-01

    Goldenhar syndrome (GS) or oculo-auriculo-vertebral dysplasia (OAVD), involves a wide variety of organ systems. Cardiovascular anomalies are among the frequent malformations. The purpose of this report is to introduce a male case of a dizygotic twin pregnancy with GS and right circumflex aortic arch (RCAA), severe coarctation, hypoplastic aortic arch, aberrant right subclavian artery, vascular ring, bilateral renal artery stenosis, and mild Dandy-Walker syndrome. The embryology of RCAA and coarctation is revisited. PMID:25298700

  4. Correlation Between Maxillary Central Incisor Crown Morphology And Mandibular Dental Arch Form In Normal Occlusion Subjects

    OpenAIRE

    Paranhos, Luiz Renato; Lima,Carolina Souto; Silva,Ricardo Henrique Alves da; Daruge Júnior,Eduardo; Torres,Fernando Cesar

    2012-01-01

    The aim of this study was to evaluate the correlation between the morphology of the mandibular dental arch and the maxillary central incisor crown. Cast models from 51 Caucasian individuals, older than 15 years, with optimal occlusion, no previous orthodontic treatment, featuring 4 of the 6 keys to normal occlusion by Andrews (the first being mandatory) were observed. The models were digitalized using a 3D scanner, and images of the maxillary central incisor and mandibular dental arch were ob...

  5. Comparison Of Medial Arch-Supporting Insoles And Heel Pads In The Treatment Of Plantar Fasciitis

    Directory of Open Access Journals (Sweden)

    Malkoc Melih

    2015-03-01

    Full Text Available Plantar fasciitis is a disorder caused by inflammation of the insertion point of the plantar fascia over the medial tubercle of the calcaneus. Foot orthotics are used to treat plantar fasciitis. Heel pads medialise the centre of force, whereas medial arch supporting insoles lateralise the force. We assessed the clinical results of the treatment of plantar fasciitis with silicone heel pads and medial arch-supported silicone insoles.

  6. Novel technique for arch and visceral artery debranching using ascending aortic inflow.

    Science.gov (United States)

    Mussa, Firas F; Walkes, Jon-Cecil; Lumsden, Alan B; Reardon, Michael J

    2008-01-01

    Aortic arch aneurysms extending proximally to the left subclavian artery have traditionally been approached through a median sternotomy and a staged elephant trunk procedure requiring a left thoracotomy or thoracoabdominal incision. We describe a novel technique for repair of such aneurysms in a single-stage, hybrid approach using bypass grafts arising from the ascending aorta to all arch and upper abdominal visceral arteries followed by endovascular exclusion of the aortic aneurysm.

  7. Dentures as Learning Materials for Maxillomandibular Fixation by Erich Arch Bars.

    Science.gov (United States)

    Aksam, Ersin; Aksam, Berrak

    2016-03-01

    Maxillomandibular fixation with Erich arch bars is an economic method for handling mandibular fractures. Unfortunately, this method has some disadvantages, such as long operating time, periodontal trauma, and risk of puncture injury to the operator. To overcome these disadvantages, we propose teaching the pits and pearls of maxillomandibular fixation with Erich arch bars to trainees using dentures of a patient. Experiencing the method on dentures will shorten the learning curve.

  8. Calculation and Analysis of Internal Force in Arch Structure of Frozen Soil

    Institute of Scientific and Technical Information of China (English)

    YUE Feng-tian; ZHANG Yong; SHI Rong-jian

    2005-01-01

    Aimed at the frozen soil arch reinforcement form of upside shed used for the shield machine launching in tunneling the internal force of the structure was calculated with the aid of the structural mechanics theory. Considering the space characteristics of the structure,this calculating method is suitable for practical engineering.Moreover,the behavior of the freezing arch reinforcement structure was analyzed combined with an engineering case.

  9. [Interrupted aortic arch in a 68-year-old female with hypertension].

    Science.gov (United States)

    Benincasa, Susanna; Fineschi, Massimo; Ceccherini, Claudio; Pierli, Carlo

    2015-04-01

    Interrupted aortic arch (IAA) is a rare congenital malformation of the aorta and aortic arch. We report the case of a 68-year-old female with hypertension and poor control of blood pressure levels. She was diagnosed with aortic coarctation by aortography during young age. A double access angiography was performed that showed a type A IAA, a rare condition in adults that may cause hypertension.

  10. The massive star Initial Mass Function of the Arches cluster

    CERN Document Server

    Espinoza, Pablo; Melnick, Jorge

    2009-01-01

    The massive Arches cluster near the Galactic Center is in principle an ideal laboratory to investigate massive star formation under extreme conditions. But it comes at a high price: the cluster is hidden behind several tens of magnitudes of visual extinction. Severe crowding requires space or AO-assisted instruments to resolve the stellar populations, and even with the best instruments the interpretation of the data is far from direct. Several investigations using NICMOS and the most advanced AO imagers on the gro und revealed an overall top-heavy IMF for the cluster, with a very flat IMF near the center. There are a number of effects, however, that could potentially bias these results, in particular the strong differential extinction and the problem of transforming the observations to a standard photometric system in the presence of strong reddening. We present new observations obtained with the NAOS-Conica (NACO) AO-imager on the VLT. The problem of photometric transformation is avoided by working in the na...

  11. PDR Emission from the Arched-Filaments and Nearby Positions

    Science.gov (United States)

    García, Pablo; Röllig, Markus; Abel, Nicholas; Steinke, Martin; Burton, Michael; Blackwell, Rebecca

    2017-01-01

    We investigate the physical conditions of the gas, atomic and molecular, in the filaments in the context of Photo-Dissociation Regions (PDRs) using the KOSMA-PDR mode of clumpy clouds. We also compare the [CII] vs. [NII] integrated intensity predictions in Abel et al. 2005 for HII regions and adjacent PDRs in the Galactic disk, and check for their applicability under the extreme physical conditions present in the GC. Our preliminary results show that observed integrated intensities are well reproduced by the PDR model. The gas is exposed to a relatively low Far-UV field between 102 - 103 Draine fields. The total volume hydrogen density is well constrained between 104 - 105 cm-3. The hydrogen ionization rate due to cosmic-rays varies between 10-15 and 4× 10-15 s-1, with the highest value ~ 10-14 s-1 found towards G0.07+0.04. Our results show that the line-of-sight contribution to the total distance of the filaments to the Arches Cluster is not negligible. The spatial distribution of the [CII]/[NII] ratio shows that the integrated intensity ratios are fairly homogeneously distributed for values below 10 in energy units. Calculations including variation on the [C/N] abundance ratio show that tight constraints on this ratio are needed to reproduce the observations.

  12. Geology of the Juanita Arch quadrangle, Mesa county, Colorado

    Science.gov (United States)

    Shoemaker, Eugene M.

    1954-01-01

    The Juanita Arch quadrangle is one of eighteen 7 1/2-minute quadrangles covering the principal carnotite-producing area of southwestern Colorado. The geology of these quadrangles was mapped by the U.S. Geological Survey for the Atomic Energy Commission as part of a comprehensive study of carnotite deposits. The rocks exposed in the eighteen quadrangles consist of crystalline rocks of pre-Cambrian age and sedimentary rocks that range in age from late Paleozoic to Quaternary. Over much of the area the sedimentary rocks are flat lying, but in places the rocks are disrupted by high-angle faults and northwest-trending folds. Conspicuous among the folds are large anticlines having cores of intrusive salt and gypsum. Most of the carnotite deposits are confined to the Salt Wash sandstone member of the Jurassic Morrison formation. Within this sandstone, most of the deposits are spottily distributed through an arcuate zone known as the "Uravan Mineral Belt". Individual deposits range in size from irregular masses containing only a few tons of ore ro large, tabular masses containing many thousands of tons. The ore consists largely of sandstone selectively impregnated and in part replaced by uranium and vanadium minerals. Most of the deposits appear to be related to certain sedimentary structures in sandstone of favorable construction.

  13. PDR Emission from the Arched-Filaments and Nearby Positions

    CERN Document Server

    García, P; Abel, N; Steinke, M; Burton, M; Blackwell, R

    2016-01-01

    We investigate the physical conditions of the gas, atomic and molecular, in the filaments in the context of Photo-Dissociation Regions (PDRs) using the KOSMA-PDR mode of clumpy clouds. We also compare the [CII] vs. [NII] integrated intensity predictions in Abel et al. 2005 for HII regions and adjacent PDRs in the Galactic disk, and check for their applicability under the extreme physical conditions present in the GC. Our preliminary results show that observed integrated intensities are well reproduced by the PDR model. The gas is exposed to a relatively low Far-UV field between 10^2 - 10^3 Draine fields. The total volume hydrogen density is well constrained between 10^4 - 10^5 cm^-3. The hydrogen ionization rate due to cosmic-rays varies between 10^-15 and 4x10^-15 s^-1, with the highest value ~ 10^-14 s^-1 found towards G0.07+0.04. Our results show that the line-of-sight contribution to the total distance of the filaments to the Arches Cluster is not negligible. The spatial distribution of the [CII]/[NII] ra...

  14. Behaviour of Frictional Joints in Steel Arch Yielding Supports

    Science.gov (United States)

    Horyl, Petr; Šňupárek, Richard; Maršálek, Pavel

    2014-10-01

    The loading capacity and ability of steel arch supports to accept deformations from the surrounding rock mass is influenced significantly by the function of the connections and in particular, the tightening of the bolts. This contribution deals with computer modelling of the yielding bolt connections for different torques to determine the load-bearing capacity of the connections. Another parameter that affects the loading capacity significantly is the value of the friction coefficient of the contacts between the elements of the joints. The authors investigated both the behaviour and conditions of the individual parts for three values of tightening moment and the relation between the value of screw tightening and load-bearing capacity of the connections for different friction coefficients. ANSYS software and the finite element method were used for the computer modelling. The solution is nonlinear because of the bi-linear material properties of steel and the large deformations. The geometry of the computer model was created from designs of all four parts of the structure. The calculation also defines the weakest part of the joint's structure based on stress analysis. The load was divided into two loading steps: the pre-tensioning of connecting bolts and the deformation loading corresponding to 50-mm slip of one support. The full Newton-Raphson method was chosen for the solution. The calculations were carried out on a computer at the Supercomputing Centre VSB-Technical University of Ostrava.

  15. The effects of initial rise and axial loads on MEMS arches

    KAUST Repository

    Tella, Sherif A.

    2017-04-07

    Arch microbeams have been utilized and proposed for many uses over the past few years due to their large tunability and bistability. However, recent experimental data have shown different mechanical behavior of arches when subjected to axial loads. This paper aims to investigate in depth the influence of the competing effects of initial rise and axial loads on the mechanical behavior of micromachined arches; mainly their static deflection and resonant frequencies. Based on analytical solutions, the static response and eigenvalue problems are analyzed for various values of initial rises and axial loads. Universal curves showing the variation of the first three resonance frequencies of the arch are generated for various values of initial rise under both tensile and compressive axial loads. This study shows that increasing the tensile or compressive axial loads for different values of initial rise may lead to either increase in the stiffness of the beam or initial decrease in the stiffness, which later increases as the axial load is increased depending on the dominant effect of the initial rise of the arch and the axial load. The obtained universal curves represent useful design tools to predict the tunability of arches under axial loads for various values of initial rises. The use of the universal curves is demonstrated with an experimental case study. Analytical formulation is developed to predict the point of minimum where the trend of the resonance frequency versus axial loads changes qualitatively due to the competing effects of axial loads and initial curvature.

  16. Triggers for the Collapse of Ice Shelves in Antarctica: Investigating Compressive Arch Failure with Numerical Models

    Science.gov (United States)

    Huth, A.; Smith, B. E.

    2015-12-01

    Antarctic ice shelves restrain, or buttress, grounded ice from flowing freely into the ocean by redistributing the force of the ice flow to pinning points (ice rises) at the ice front and shear margins at adjacent bay walls. This buttressing process typically defines a 'compressive arch' in the strain rate-field of the ice shelf, where the smallest principal component transitions from compressive inland of the arch to extensive seaward of the arch. If the compressive arch is breached due to iceberg calving at the ice front or thinning at the shear margins, the ice shelf will retreat irreversibly to a new stable configuration or collapse entirely. This retreat can compromise ice shelf buttressing, resulting in sea-level rise and ocean freshening as grounded ice flows unrestricted into the ocean. Here, we investigate the dynamics of compressive arch failure using Larsen C ice shelf as a test case for a larger study that will include several other ice shelves and projections for sea-level rise. We use satellite observations to develop a steady state model of Larsen C in Elmer/ICE, a finite element ice sheet/ice flow software package. We run calving and thinning simulations to determine the conditions needed to trigger ice shelf retreat via compressive arch failure and discuss the likelihood of these scenarios occurring in relation to extrapolations of current melt profiles and calving trends.

  17. Study on real working performance and overload safety factor of high arch dam

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    Considering the fact that high arch dams have problems such as complicated stress,high cost,and hazards after being damaged,this paper intends to study the effects of load,material strength,and safety analysis method on dam safety and working performance of arch dams.In this article,the effects of temperature,self weight exaction way and water loading on structure response are first discussed,and a more reasonable way of considering is then put forward.By taking into consideration the mechanical property of materials and comparing the effects of different yield criteria on overloading safety of high arch dams,this paper concludes that brittle characteristics of concrete should be fully considered when conducting safety assessment for high arch dams to avoid overestimating the bearing capacity of the dams.By comparing several typical projects,this paper works out a safety assessment system of multiple safety and relevant engineering analogical analysis methods,which is closer to the actual situation,and thus is able to assess the response of high arch dam structure in a more comprehensive way,elicit the safety coefficients in different situations,and provide a new way of considering the safety assessment of high arch dams.

  18. [Effect of dental arch length decrease during orthodontic treatment in the upper airway development. A review].

    Science.gov (United States)

    Haddad, Stéphanie; Kerbrat, Jean-Baptiste; Schouman, Thomas; Goudot, Patrick

    2017-03-01

    A possible relation between an upper airway space decrease and the development of obstructive sleep apnea syndrom explains the importance to know the effect of the modification of dental arch length on the upper airway during orthodontic treatment. The aim of this article is to expose recent knowledge about upper airway development and dental arch length decrease factors, to determine the influence of this decrease on upper airway development. A review was done to determine the upper airway normal development, to define dental arch to specify if an ideal position of dental arch on apical base exists. All of the length dental arch decrease factors during orthodontic treatment (dental extraction, dental agenesis and dental malpositions) and their upper airway resounding were searched. Some authors found a diminution of upper airway space after premolars extractions while others didn't found this diminution after extractions premolars when incisor retraction is finished. A decrease of transversal maxillary diameter and nasal cavity may be due to absence of permanent teeth. The effect of dental arch length decrease during orthodontic treatment in the upper airway development was not scientifically proved. However we had to be vigilant and adapt our orthodontic treatment case by case to avoid an upper airway modification. © EDP Sciences, SFODF, 2017.

  19. Variations of the aortic arch - a study on the most common branching patterns

    Energy Technology Data Exchange (ETDEWEB)

    Muller, Marguerite; Schmitz, Bernd L; Schick, Melanie; Schloetzer, Wiebke (Dept. of Diagnostic and Interventional Radiology, Section Neuroradiology, Univ. Ulm (Germany)), email: marguerite.mueller@uni-ulm.de; Pauls, Sandra (Dept. of Diagnostic and Interventional Radiology, Univ. Ulm (Germany)); Roehrer, Stefan; Kapapa, Thomas (Dept. of Neurosurgery, Univ. Ulm (Germany))

    2011-09-15

    Background: Anatomical variants of the aortic arch and its branching patterns often appear as an incidental finding during routine computed tomography (CT) scanning. These variations can be of relevance when performing angiography or endovascular interventions and may cause symptoms such as dysphagia. Purpose: To analyze common anatomical variations found within the arteries originating from the aortic arch in patients using contrast CT imaging techniques. Material and Methods: A total of 2033 contrast CT scans were analyzed. To obtain a truly representative sample, cases were chosen from different hospital departments without previous knowledge of the patient history. Results: The total percentage of variations within the analyzed patients was 13.3%. In 8.0% a truncus bicaroticus was found. 4.2% of the patients showed a left vertebral artery originating directly from the aortic arch, mostly proximal, and in 1 case distal to the left subclavian artery. In 1.0% we found an aberrant right subclavian artery. We also found a single case of a right descending aortic arch. Conclusion: Variations of the aortic arch and its branching are frequently found, mostly as an incidental finding during routine diagnostic scanning. A contrast-enhanced CT scan is a good method with which to study the aortic arch and its associated branching pattern

  20. Correlation between maxillary central incisor crown morphology and mandibular dental arch form in normal occlusion subjects.

    Science.gov (United States)

    Paranhos, Luiz Renato; Lima, Carolina Souto; da Silva, Ricardo Henrique Alves; Daruge Júnior, Eduardo; Torres, Fernando Cesar

    2012-01-01

    The aim of this study was to evaluate the correlation between the morphology of the mandibular dental arch and the maxillary central incisor crown. Cast models from 51 Caucasian individuals, older than 15 years, with optimal occlusion, no previous orthodontic treatment, featuring 4 of the 6 keys to normal occlusion by Andrews (the first being mandatory) were observed. The models were digitalized using a 3D scanner, and images of the maxillary central incisor and mandibular dental arch were obtained. These were printed and placed in an album below pre-set models of arches and dental crowns, and distributed to 12 dental surgeons, who were asked to choose which shape was most in accordance with the models and crown presented. The Kappa test was performed to evaluate the concordance among evaluators while the chi-square test was used to verify the association between the dental arch and central incisor morphology, at a 5% significance level. The Kappa test showed moderate agreement among evaluators for both variables of this study, and the chi-square test showed no significant association between tooth shape and mandibular dental arch morphology. It may be concluded that the use of arch morphology as a diagnostic method to determine the shape of the maxillary central incisor is not appropriate. Further research is necessary to assess tooth shape using a stricter scientific basis.

  1. Analysis of seismic disaster failure mechanism and dam-break simulation of high arch dam

    Science.gov (United States)

    Zhang, Jingkui; Zhang, Liaojun

    2014-06-01

    Based on a Chinese national high arch dam located in a meizoseismal region, a nonlinear numerical analysis model of the damage and failure process of a dam-foundation system is established by employing a 3-D deformable distinct element code (3DEC) and its re-development functions. The proposed analysis model considers the dam-foundation-reservoir coupling effect, influence of nonlinear contact in the opening and closing of the dam seam surface and abutment rock joints during strong earthquakes, and radiation damping of far field energy dissipation according to the actual workability state of an arch dam. A safety assessment method and safety evaluation criteria is developed to better understand the arch dam system disaster process from local damage to ultimate failure. The dynamic characteristics, disaster mechanism, limit bearing capacity and the entire failure process of a high arch dam under a strong earthquake are then analyzed. Further, the seismic safety of the arch dam is evaluated according to the proposed evaluation criteria and safety assessment method. As a result, some useful conclusions are obtained for some aspects of the disaster mechanism and failure process of an arch dam. The analysis method and conclusions may be useful in engineering practice.

  2. New approach to great-vessel reconstruction in transposition complexes with interrupted aortic arch.

    Science.gov (United States)

    Liddicoat, J R; Reddy, V M; Hanley, F L

    1994-10-01

    Interrupted aortic arch can be associated with transposition of the great arteries with ventricular septal defect and with the Taussig-Bing anomaly. This usually results in a marked disparity between the hypoplastic ascending aorta and the dilated main pulmonary artery. Currently, standard arterial switch and arch repair is a widely applied approach to the surgical management of these lesions. Though the morphology of the great vessels in these lesions does not preclude this approach, the great-vessel mismatch can result in difficulties at and beyond the proximal neo-aortic to ascending aortic suture line that cause excessive bleeding, obstruction, tension, distortion, and the need of patch augmentation of the ascending aorta or arch with nonviable material. We present an alternative surgical approach used in 2 patients, 1 with Taussig-Bing anomaly and interrupted aortic arch and the other with transposition of the great arteries, ventricular septal defect, and interrupted aortic arch, that greatly simplifies the reconstruction of the neo-aorta and repair of the interrupted arch and avoids these potential hazards.

  3. Prediction of Collapse Scope of Deep-Buried Tunnels Using Pressure Arch Theory

    Directory of Open Access Journals (Sweden)

    Yingchao Wang

    2016-01-01

    Full Text Available Tunnel collapse remains a serious problem in practice. Effective prediction methods on tunnel collapse are necessary for tunnel engineering. In this study, systematic study on the pressure arch was presented to predict tunnel collapse. Multiple factors under different conditions were considered. First, the pressure arch was described as a certain scope in comparison with the lowest pressure arch line. Then, a deep-buried circular tunnel was selected as the investigated object. Its collapse scope was analyzed using the lowest pressure arch line. Meanwhile, the main influence from the ground stress field was considered. Different modes of ground stress fields were investigated in detail. The results indicate that the collapse scope varies with different ground stress fields. Determination on the collapse scope is strongly affected by the judgment standard of the pressure arch. Furthermore, a selected case was analyzed with the pressure arch. The area and the height of tunnel collapse were calculated with multiple factors, including ground stress field, judgment standard, and lateral pressure coefficient. Finally, selected results were compared with relevant previous researches, and reasonable results were obtained. The present results are helpful for further understanding of the tunnel collapse and could provide suitable guidance for tunnel projects.

  4. Nonlinear simulation of arch dam cracking with mixed finite element method

    Directory of Open Access Journals (Sweden)

    Ren Hao

    2008-06-01

    Full Text Available This paper proposes a new, simple and efficient method for nonlinear simulation of arch dam cracking from the construction period to the operation period, which takes into account the arch dam construction process and temperature loads. In the calculation mesh, the contact surface of pair nodes is located at places on the arch dam where cracking is possible. A new effective iterative method, the mixed finite element method for friction-contact problems, is improved and used for nonlinear simulation of the cracking process. The forces acting on the structure are divided into two parts: external forces and contact forces. The displacement of the structure is chosen as the basic variable and the nodal contact force in the possible contact region of the local coordinate system is chosen as the iterative variable, so that the nonlinear iterative process is only limited within the possible contact surface and is much more economical. This method was used to simulate the cracking process of the Shuanghe Arch Dam in Southwest China. In order to prove the validity and accuracy of this method and to study the effect of thermal stress on arch dam cracking, three schemes were designed for calculation. Numerical results agree with actual measured data, proving that it is feasible to use this method to simulate the entire process of nonlinear arch dam cracking.

  5. Predictors of patent false lumen of the aortic arch after hemiarch replacement.

    Science.gov (United States)

    Uchino, Gaku; Ohashi, Takeki; Iida, Hiroshi; Tadakoshi, Masao; Kageyama, Souichirou; Furui, Masato; Kodani, Noriko

    2016-12-01

    Hemiarch replacement for acute type A aortic dissection is less invasive than total arch replacement but involves increased risk of late aortic arch dilation because of patent false lumen of the aortic arch. If we can predict this risk, it may be a valuable prognostic indicator for selecting surgical procedures for acute type A aortic dissection. We reviewed our surgical experience to predict patent false lumen. From January 2009 to November 2014, we performed 108 hemiarch replacement procedures for acute type A aortic dissection that had patent false lumen of the ascending aortic arch. We identified 56 patients who had preoperative and postoperative contrast-enhanced computed tomography. Patients' preoperative characteristics, preoperative and postoperative contrast-enhanced computed tomography findings, intraoperative findings and postoperative course were investigated. Of the 56 patients, 32 (57.1 %) were men and their mean age at surgery was 63.7 ± 11.8 years. Overall in-hospital mortality rate was 7.1 % (4 patients). According to postoperative imaging findings, 56 patients were classified into two groups: group A (39 patients), with patent false lumen, and group B (17 patients), with thrombosed false lumen. Logistic regression analysis revealed that brachiocephalic artery dissection and no tear resection contributed to postoperative patent false lumen of the aortic arch more strongly than did other factors. Brachiocephalic artery dissection and no tear resection are potential predictors of patent false lumen of the aortic arch after hemiarch replacement.

  6. Ductal Stent Implantation in Tetralogy of Fallot with Aortic Arch Abnormality

    Science.gov (United States)

    Ergul, Yakup; Saygi, Murat; Ozyilmaz, Isa; Guzeltas, Alper; Odemis, Ender

    2015-01-01

    Stenting of patent ductus arteriosus is an alternative to palliative cardiac surgery in newborns with duct-dependent or decreased pulmonary circulation; however, the use of this technique in patients with an aortic arch abnormality presents a challenge. Tetralogy of Fallot is a congenital heart defect that is frequently associated with anomalies of the aortic arch and its branches. The association is even more common in patients with chromosome 22q11 deletion. We present the case of an 18-day-old male infant who had cyanosis and a heart murmur. After an initial echocardiographic evaluation, the patient was diagnosed with tetralogy of Fallot and right-sided aortic arch. The pulmonary annulus and the main pulmonary artery and its branches were slightly hypoplastic; the ductus arteriosus was small. Conventional and computed tomographic angiograms revealed a double aortic arch and an aberrant left subclavian artery. The right aortic arch branched into the subclavian arteries and continued into the descending aorta, whereas the left aortic arch branched into the common carotid arteries and ended with the patent ductus arteriosus. After evaluation of the ductal anatomy, we implanted a 3.5 × 15-mm coronary stent in the duct. Follow-up injections showed augmented pulmonary flow and an increase in oxygen saturation from 65% to 94%. The patient was also found to have chromosome 22q11 deletion. PMID:26175649

  7. Un estudio del dolor en el marco de la conducta verbal: de las aportaciones de W. E. Fordyce a la Teoría del Marco Relacional (RFT

    Directory of Open Access Journals (Sweden)

    Olga Gutiérrez Martínez

    2006-01-01

    Full Text Available En este estudio teórico se presenta una aproximación al análisis de los eventos privados en general y del dolor en particular desde una perspectiva funcionalcontextual bajo las aportaciones recientes de la conducta verbal, las relaciones arbitrarias entre eventos y la derivación de funciones psicológicas. Se hace una revisión de cómo los analistas de conducta han abordado el estudio del dolor como factor de control de otros comportamientos y, partiendo de la integración de estas aportaciones con los recientes avances del análisis de la conducta verbal, se propone la Teoría del Marco Relacional (RFT como formulación mejor articulada a la hora de ofrecer una explicación contextual del dolor. A raíz de la investigación en marcos relacionales y regulación verbal, se describe un novedoso planteamiento de los problemas clínicos de dolor como formas del trastorno de evitación experiencial (TEE que supone una aproximación a la psico(patología más parsimoniosa que la tradicional basada en la clasificación sindrómica. Además, son examinados los avances terapéuticos que se han derivado de esta concepción verbal-relacional de los problemas psicológicos, presentándose la terapia de aceptación y compromiso (ACT como un sistema terapéutico dirigido a alterar las clases de regulación verbal inefectivas y favorecer actuaciones ajustadas a los valores personales.

  8. marco organizacional

    Directory of Open Access Journals (Sweden)

    Juan David Velásquez H.

    2006-01-01

    Full Text Available Ha sido ampliamente reconocida la importancia de la predicción en la toma de decisiones, y se han encontrado evidencias de que uno de los métodos más efectivos es el ajuste de los pronósticos obtenidos a partir de modelos matemáticos usando juicios informados. No obstante, existe una amplia cantidad de factores que pueden afectar la calidad y credibilidad de las predicciones; en este trabajo se examinan aquellos factores relacionados con las políticas organizacionales, y se proponen varias estrategias para su mitigación.

  9. Dental crowding in primary dentition and its relationship to arch and crown dimensions among preschool children of Davangere.

    Science.gov (United States)

    Prabhakar, A R; Ravi, G R; Kurthukoti, Ameet J; Shubha, A B

    2008-01-01

    The purpose of the present study was to evaluate dental crowding in the deciduous dentition and its relationship to the crown and the arch dimensions among preschool children of Davangere. Stratified randomized selection of one hundred, 3-4 year old healthy children with all primary teeth erupted was done and divided into two groups. One group had children with anterior crowding in both the arches while the other had spacing. Alginate impressions of the upper and lower arches were made and the study casts were obtained. The tooth and arch dimensions were determined. Mesiodistal dimensions of all the teeth were significantly larger in the crowded arch group. However, the buccolingual dimensions of the maxillary right central incisor, mandibular lateral incisors and the maxillary molars and the crown shape ratio of maxillary lateral incisors, mandibular canines and mandibular right second molar was statistically different. No significant correlation was found between the arch width and the presence of crowding of deciduous dentition. The arch depth of the spaced dentition was greater when compared to the crowded ones. The arch perimeter of the crowded arches was significantly less than the spaced arches.

  10. Biomechanics of longitudinal arch support mechanisms in foot orthoses and their effect on plantar aponeurosis strain.

    Science.gov (United States)

    Kogler, G F; Solomonidis, S E; Paul, J P

    1996-07-01

    OBJECTIVE: The purpose of this investigation was to quantify the longitudinal arch support properties of several types of foot orthosis. DESIGN: An in vitro method that simulated 'static stance' was used to determine arch support capabilities, with plantar aponeurosis strain implemented as the performance measure. BACKGROUND: A longitudinal arch support mechanism of an orthosis resists depression of the foot's arches by transferring a portion of the load to the medial structures of the foot. Since the plantar aponeurosis is in tension when the foot is loaded, a quantifiable decrease in strain should occur with an adequate orthotic arch control mechanism. METHODS: A differential variable reluctance transducer was surgically implanted in the plantar aponeurosis of cadaveric donor limb feet (n = 7). Each specimen was mounted in an electromechanical test machine which applied a load of up to 900 N axially to the tibia. The test schedule was divided into seven test conditions: specimen barefoot; specimen with shoe and specimen with shoe and five different orthoses. RESULTS: The University of California Biomechanics Laboratory Shoe Insert and two other foot orthoses significantly decreased the strain in the plantar aponeurosis compared to the barefoot control and were considered effective arch supports (P plantar aponeurosis strain. Significant variations of time required to achieve the specified load levels were recorded among the test conditions, indicating the relative cushioning properties of the shoe/orthosis systems. CONCLUSIONS: The patterns of plantar aponeurosis strain observed in cadaveric tests suggest that certain types of orthoses are more effective than others in the support of the foot's longitudinal arches. It is suggested that to support the longitudinal arches of the foot effectively the medial surface contours of the orthosis must stabilize the apical bony structure of the foot's arch. RELEVANCE: Reducing tension in the plantar aponeurosis is an

  11. Propiedad y empresa minera en la Mesa centro-norte de México Guanajuato, San Luís Potosí y Zacatecas, 1880-1910 /

    OpenAIRE

    Gámez Rodríguez, Moisés

    2005-01-01

    Consultable des del TDX Títol obtingut de la portada digitalitzada En la tesis se abordan los procesos de integración y diferenciación sobre la propiedad y la empresa en la Mesa Centro-norte de México (Guanajuato, San Luis Potosí y Zacatecas) circunscritos en el contexto nacional e internacional, durante el periodo de 1880-1910. La hipótesis general es que la demanda internacional de metales preciosos y de minerales industriales estimuló la producción, la creación de un marco institucio...

  12. Efetividade da funcionalidade nas famílias com adolescentes de primeiro semestre da fundação universitária san gil

    OpenAIRE

    CRIADO MORALES, MARÍA LUCENITH; RUBIANO MESA, YURIAN

    2010-01-01

    En el presente estudio se determina y analiza la efectividad de la funcionalidad en las familias con adolescentes de primer semestre en la Fundación Universitaria de San Gil en el periodo 2008-1, teniendo como base el “Marco teórico de organización sistémica” de la doctora María Luisa Friedemann. Es un estudio descriptivo transversal, cuya muestra estuvo constituida por 150 familias. A los adolescentes se les aplicó la ficha sociodemográfica y la “Escala de evaluación de la funcionalidad fami...

  13. Efectividad de la funcionalidad en las familias con adolescentes de primer semestre de la Fundación Universitaria San Gil

    OpenAIRE

    MARÍA LUCENITH CRIADO MORALES; YURIAN RUBIANO MESA

    2009-01-01

    En el presente estudio se determina y analiza la efectividad de la funcionalidad en las familias con adolescentes de primer semestre en la Fundación Universitaria de San Gil en el periodo 2008-1, teniendo como base el " Marco teórico de organización sistémica" de la doctora María Luisa Friedemann. Es un estudio descriptivo transversal, cuya muestra estuvo constituida por 150 familias. A los adolescentes se les aplicó la ficha sociodemográfica y la " Escala de evaluación de la funcionalidad fa...

  14. Multi-detector row computed tomographic evaluation of a rare type of complete vascular ring: Double aortic arch with atretic left arch distal to the origin of left subclavian artery

    Energy Technology Data Exchange (ETDEWEB)

    Hung, Ying Ying; Fu, Ching Yun; Wei, Hao Ji; Tsai, I Chen; Chen, Clayton Chi Chang [Taichung Veterans General Hospital, Taichung (China)

    2013-10-15

    Double aortic arch with an atretic left arch distal to the origin of left subclavian artery was diagnosed with multi-detector row computed tomography (MDCT) in two children with dysphagia. This rare type of complete vascular ring is clinically important because it may be confused with right aortic arch in mirror imaging. Anatomic details of this rare type of complete vascular ring demonstrated on MDCT facilitated appropriate surgical treatment.

  15. Numerical analyses in the design of umbrella arch systems

    Institute of Scientific and Technical Information of China (English)

    J. Oke; N. Vlachopoulos; M.S. Diederichs

    2014-01-01

    Due to advances in numerical modelling, it is possible to capture complex support-ground interaction in two dimensions and three dimensions for mechanical analysis of complex tunnel support systems, although such analysis may still be too complex for routine design calculations. One such system is the forepole element, installed within the umbrella arch temporary support system for tunnels, which warrants such support measures. A review of engineering literature illustrates that a lack of design standards exists regarding the use of forepole elements. Therefore, when designing such support, de-signers must employ complex numerical models combined with engineering judgement. With reference to past developments by others and new investigations conducted by the authors on the Driskos tunnel in Greece and the Istanbul metro, this paper illustrates how advanced numerical modelling tools can facilitate understanding of the influences of design parameters associated with the use of forepole ele-ments. In addition, this paper highlights the complexity of the ground-support interaction when simulated with two-dimensional (2D) finite element software using a homogenous reinforced region, and three-dimensional (3D) finite difference software using structural elements. This paper further il-lustrates sequential optimisation of two design parameters (spacing and overlap) using numerical modelling. With regard to capturing system behaviour in the region between forepoles for the purpose of dimensioning spacing, this paper employs three distinctive advanced numerical models:particle codes, continuous finite element models with joint set and Voronoi blocks. Finally, to capture the behaviour/failure ahead of the tunnel face (overlap parameter), 2D axisymmetric models are employed. Finally, conclusions of 2D and 3D numerical assessment on the Driskos tunnel are drawn. The data enriched case study is examined to determine an optimum design, based on the proposed optimisation of

  16. Role of aortic arch vascular mechanics in cardiovagal baroreflex sensitivity.

    Science.gov (United States)

    Klassen, Stephen A; Chirico, Daniele; Dempster, Kylie S; Shoemaker, J Kevin; O'Leary, Deborah D

    2016-07-01

    Cardiovagal baroreflex sensitivity (cvBRS) measures the efficiency of the cardiovagal baroreflex to modulate heart rate in response to increases or decreases in systolic blood pressure (SBP). Given that baroreceptors are located in the walls of the carotid sinuses (CS) and aortic arch (AA), the arterial mechanics of these sites are important contributors to cvBRS. However, the relative contribution of CS and AA mechanics to cvBRS remains unclear. This study employed sex differences as a model to test the hypothesis that differences in cvBRS between groups would be explained by the vascular mechanics of the AA but not the CS. Thirty-six young, healthy, normotensive individuals (18 females; 24 ± 2 yr) were recruited. cvBRS was measured using transfer function analysis of the low-frequency region (0.04-0.15 Hz). Ultrasonography was performed at the CS and AA to obtain arterial diameters for the measurement of distensibility. Local pulse pressure (PP) was taken at the CS using a hand-held tonometer, whereas AA PP was estimated using a transfer function of brachial PP. Both cvBRS (25 ± 11 vs. 19 ± 7 ms/mmHg, P = 0.04) and AA distensibility (16.5 ± 6.0 vs. 10.5 ± 3.8 mmHg(-1) × 10(-3), P = 0.02) were greater in females than males. Sex differences in cvBRS were eliminated after controlling for AA distensibility (P = 0.19). There were no sex differences in CS distensibility (5.32 ± 2.3 vs. 4.63 ± 1.3 mmHg(-1) × 10(-3), P = 0.32). The present data demonstrate that AA mechanics are an important contributor to differences in cvBRS.

  17. San Pascual (1991) Año XXVIII, n. 284

    OpenAIRE

    Pérez, María Dolores, O.S.C. (Directora)

    1991-01-01

    Editorial. Documento de la Santa sede. San Pascual y la Virgen de Gracia. Nueva revista dedicada a San Pascual. Adoración nocturna. Desde la clausura. Vida en el santuario de San Pascual. Orden Franciscana. Coplas a San Pascual Baylón. San Pascual en el arte. Rutas pascualinas. A l'ombra del claustre.

  18. San Pascual (1991) Año XXVIII, n. 284

    OpenAIRE

    Pérez, María Dolores, O.S.C. (Directora)

    1991-01-01

    Editorial. Documento de la Santa sede. San Pascual y la Virgen de Gracia. Nueva revista dedicada a San Pascual. Adoración nocturna. Desde la clausura. Vida en el santuario de San Pascual. Orden Franciscana. Coplas a San Pascual Baylón. San Pascual en el arte. Rutas pascualinas. A l'ombra del claustre.

  19. Promoción de la lectura en el marco educativo

    Directory of Open Access Journals (Sweden)

    Maite Monar van Vliet

    2012-01-01

    Full Text Available La investigación ofrece una visión teóricopráctica de la promoción de la lectura en un marco educativo concreto. Por una parte, se muestra el estado de la cuestión centrándose en el marco legislativo, la investigación y la promoción de la lectura virtual y, más en concreto, en el caso del País Valenciano, donde se ubica la investigación práctica llevada a cabo. A partir de la UNESCO, la LOE y los planes de lectura se plantea una panorámica de la legislación actual. Diferentes estudios realizados por especialistas en la materia enriquecen la visión y con las plataformas virtuales se completa la descripción teórica planteada. Por otra parte, se realiza un trabajo de campo cualitativo con el objetivo de evaluar los beneficios de la web, el blog y el wiki en el aula para la promoción lectora durante el curso escolar 2010-2011 con tres grupos de tres centros diferentes. El trabajo consiste en observar la aplicación de las plataformas digitales para la promoción de la lectura en el aula y en analizar su utilidad a través del estudio de casos, el grupo de discusión y la triangulación. La investigación concluye con unas reflexiones que invitan al lector a acercarse a la promoción de la lectura en el marco educativo con tecnologías virtuales.

  20. Equidade em saúde como marco ético da bioética

    Directory of Open Access Journals (Sweden)

    Marcelo Moreira Corgozinho

    Full Text Available Resumo Este texto tem como objetivo contribuir com a aplicação da equidade, enquanto marco ético, na reflexão bioética em temáticas de saúde pública. Foram seguidos os seguintes passos metodológicos: descrição da origem conceitual da equidade; sua aplicação na esfera da saúde pública e, por último, análise da equidade como marco ético inserido na dimensão social da bioética. A raiz conceitual de equidade fundamenta-se no pensamento aristotélico, o qual distingue equidade de justiça no momento em que esta se divide em justo legal e justo natural, compreendidos na noção de justiça política. Na esfera da saúde pública, a noção de equidade parte do pressuposto de que os indivíduos são diferentes e, portanto, merecem tratamento diferenciado, consentâneo com as suas vulnerabilidades. A bioética latino-americana tem como orientação a redução das iniquidades ou disparidades sociais, sendo um de seus frutos a inclusão da equidade entre um dos objetivos da Declaração Universal sobre Bioética e Direitos Humanos (DUBDH: "Promover o acesso equitativo aos desenvolvimentos médicos, científicos e tecnológicos". Assim, a equidade ganha força como marco ético no processo decisório da alocação de recursos públicos, associada à noção de justiça social.

  1. How Arch Support Insoles Help Persons with Flatfoot on Uphill and Downhill Walking

    Science.gov (United States)

    Kim, Kwantae; Song, Chen-Yi; Chen, Yat-Hon

    2017-01-01

    The main purpose of this study was to investigate the effect of arch support insoles on uphill and downhill walking of persons with flatfoot. Sixteen healthy college students with flatfoot were recruited in this study. Their heart rate, peak oxygen uptake (VO2), and median frequency (MDF) of surface electromyogram were recorded and analyzed. Nonparametric Wilcoxon signed-rank test was used for statistical analysis. The main results were as follows: (a) peak VO2 significantly decreased with arch support insoles compared with flat insoles during uphill and downhill walking (arch support insole versus flat insole: uphill walking, 20.7 ± 3.6 versus 31.6 ± 5.5; downhill walking, 10.9 ± 2.3 versus 16.9 ± 4.2); (b) arch support insoles could reduce the fatigue of the rectus femoris muscle during downhill walking (MDF slope of arch support insole: 0.03 ± 1.17, flat insole: −6.56 ± 23.07); (c) insole hardness would increase not only the physical sensory input but also the fatigue of lower-limb muscles particularly for the rectus femoris muscle (MDF slope of arch support insole: −1.90 ± 1.60, flat insole: −0.83 ± 1.10) in persons with flatfoot during uphill walking. The research results show that arch support insoles could effectively be applied to persons with flatfoot to aid them during uphill and downhill walking.

  2. How Arch Support Insoles Help Persons with Flatfoot on Uphill and Downhill Walking

    Directory of Open Access Journals (Sweden)

    Yu-Ping Huang

    2017-01-01

    Full Text Available The main purpose of this study was to investigate the effect of arch support insoles on uphill and downhill walking of persons with flatfoot. Sixteen healthy college students with flatfoot were recruited in this study. Their heart rate, peak oxygen uptake (VO2, and median frequency (MDF of surface electromyogram were recorded and analyzed. Nonparametric Wilcoxon signed-rank test was used for statistical analysis. The main results were as follows: (a peak VO2 significantly decreased with arch support insoles compared with flat insoles during uphill and downhill walking (arch support insole versus flat insole: uphill walking, 20.7 ± 3.6 versus 31.6 ± 5.5; downhill walking, 10.9 ± 2.3 versus 16.9 ± 4.2; (b arch support insoles could reduce the fatigue of the rectus femoris muscle during downhill walking (MDF slope of arch support insole: 0.03 ± 1.17, flat insole: −6.56 ± 23.07; (c insole hardness would increase not only the physical sensory input but also the fatigue of lower-limb muscles particularly for the rectus femoris muscle (MDF slope of arch support insole: −1.90 ± 1.60, flat insole: −0.83 ± 1.10 in persons with flatfoot during uphill walking. The research results show that arch support insoles could effectively be applied to persons with flatfoot to aid them during uphill and downhill walking.

  3. Governança na internet: um estudo sobre o Marco Civil brasileiro

    OpenAIRE

    Laura Vilela Rodrigues Rezende; Meyrielle Rodrigues de Lima

    2016-01-01

    El trabajo tiene como propósito realizar un estudio sobre la legislación que rige el uso de Internet en Brasil, en el Marco Civil de Internet (Ley 12.965/2014). Se trata de una investigación descriptiva, de naturaleza cua litativa, basada en recopilación bibliográfica y estudio comparativo. Se ex pone inicialmente un breve histórico de Internet en Brasil y su panorama actual. Luego, se presenta el concepto de gobernanza en Internet y los su cesos que marcaron ...

  4. CONFRONTACIÓN GENERACIONAL : Intervenciones terapéuticas en el marco de terapia grupal multifamiliar

    OpenAIRE

    Toporosi, Susana; Ragatke, Susana; Rabain, Nicolas

    2013-01-01

    International audience; En el Servicio de Adolescencia del HNRG, Área de Salud Mental, desarrollamos desde 2001 una experiencia con grupos terapéuticos multifamiliares. En ellos se detecta la calidad de proceso de confrontación generacional que se despliega en cada familia. Desde un marco conceptual psicoanalítico se intenta posibilitar que los adolescentes desplieguen su confrontación y que los padres sean soporte de dicho proceso sin reprimirlo, negarlo, escindirlo o desmentirlo.Confrontaci...

  5. Marco epistemológico de la enfermería

    OpenAIRE

    María Mercedes Durán de Villalobos

    2002-01-01

    El marco epistemológico de la enfermería pretende mostrar, de manera panorámica, la evolución del conocimiento de la enfermería. En primera instancia, se parte de una clarificación del significado de disciplina profesional y de los componentes de la disciplina: perspectiva, dominio, definiciones y conceptos y patrones del conocimiento. A partir de la definición de la disciplina de la enfermería como el estudio del cuidado de la experiencia o vivencia de la salud humana, s...

  6. MARCO MOLES Y PERELLÓ LA CRUZ. LA EXPRESIÓN EXISTENCIAL

    OpenAIRE

    Carrión Miró, Juan

    2012-01-01

    En este trabajo se intenta reivindicar una serie de valores que consideramos muy importantes y que cada vez se van haciendo más escasos en la práctica artística, a través de la obra de dos creadores contemporáneos, Antonio Marco Moles (Alquerías del Niño Perdido (Castellón), 1929) y Vicente Perelló La Cruz (Valencia 1933-2008). Unos artistas que, avanzando a contracorriente, han conseguido unas realizaciones de gran densidad significativa y profundidad, que son una sugestiva aportación a l...

  7. Oportunidades para el sector eléctrico colombiano dentro del marco del protocolo de Kyoto

    OpenAIRE

    Correa Castrillón, Jairo Andrés

    2008-01-01

    La preocupación mundial por el Cambio Climático Global es creciente debido a los Gases de Efecto Invernadero (GEI), la Convención Marco de Naciones Unidas sobre Cambio Climático (UNFCCC) ha motivado en 1997 el Protocolo de Kyoto (PK) a tomar medidas correctivas para reducir GEI en no menos del 5.2% respecto a los niveles de las de 1990. Para reducir los costos de transacción y las cargas económicas de estos países, se han diseñado diferentes mecanismos: Comercio de Emisiones (CE), Implementac...

  8. El marco conceptual del Plan General de Contabilidad Pública de 2010: aspectos principales

    OpenAIRE

    Alonso Vaz, José Antonio

    2016-01-01

    El objetivo principal que se persigue con este trabajo no es otro que acercarnos al conocimiento del marco conceptual del Plan General Contable de las entidades públicas, analizando los aspectos más característicos de este plan y su evolución por una parte, y efectuando una comparativa con el Plan General Contable de 2007 por otra, para ello y tras una introducción, se ha dividido el trabajo en dos partes. En la primera parte, son objeto de estudio las principales modificaciones que se ha...

  9. CONFRONTACIÓN GENERACIONAL : Intervenciones terapéuticas en el marco de terapia grupal multifamiliar

    OpenAIRE

    Toporosi, Susana; Ragatke, Susana; Rabain, Nicolas

    2013-01-01

    International audience; En el Servicio de Adolescencia del HNRG, Área de Salud Mental, desarrollamos desde 2001 una experiencia con grupos terapéuticos multifamiliares. En ellos se detecta la calidad de proceso de confrontación generacional que se despliega en cada familia. Desde un marco conceptual psicoanalítico se intenta posibilitar que los adolescentes desplieguen su confrontación y que los padres sean soporte de dicho proceso sin reprimirlo, negarlo, escindirlo o desmentirlo.Confrontaci...

  10. El trabajo y la asociacion sindical en el marco de las reformas laborales en colombia

    OpenAIRE

    Muñoz Dorado, Angela María

    2014-01-01

    El documento reflexiona sobre el trabajo y la asociación sindical como derechos constitucionales en el marco del denominado Estado Social de Derecho en Colombia, a la luz de la crisis del sistema económico capitalista, en virtud de la cual, mediante estrategias como la globalización, el neoliberalismo y la financiarización, tal Estado Social de Derecho entra en contradicción en la realización efectiva de los mencionados derechos. Se describe el desenvolvimiento, desarrollo y contenido del Est...

  11. Las Inteligencias Múltiples como marco para atender a los alumnos con adaptaciones curriculares no significativas

    OpenAIRE

    Martí-Saumell, Núria

    2012-01-01

    Nuestra investigación se centra en estudiar las metodologías educativas que facilitan la atención a la diversidad desde la perspectiva de la Teoría de las Inteligencias Múltiples y con una orientación teórico-práctica. El objetivo de nuestro estudio será analizar y seleccionar aquellas metodologías educativas que facilitan la atención a la diversidad dentro del aula, así como analizar el marco que ofrece la Teoría de las Inteligencias Múltiples para atender a la diversidad. A partir de estos ...

  12. La familia en el marco de la justicia transicional: retos y reconocimientos

    OpenAIRE

    José Fernando Valencia Grajales

    2016-01-01

    Dentro del marco del proceso de paz en Colombia existen una gran cantidad de interrogantes que afectan a la sociedad colombiana, sin embargo uno de los elementos que no han sido tenidos en cuenta de forma directa son los efectos producidos durante los últimos 60 años sobre la configuración de la familia, esta situación será estudiada dentro del proyecto de investigación “familia, victimas y justicia transicional”. Este texto intenta una revisión histórica-holística al concepto de Familia, sus...

  13. El laberinto de las sombras: desaparecer en el marco de la guerra contra las drogas

    OpenAIRE

    Carolina Robledo Silvestre

    2015-01-01

    En este artículo se propone un análisis de la desaparición de personas como un hecho sociohistórico que se ha transformado sustancialmente en las últimas dos décadas en México, tanto en la práctica como en el discurso, con el paso de un contexto de guerra sucia a un contexto de guerra contra las drogas. Las desapariciones, que antes se explicaban bajo el marco de la represión política, hoy ofrecen contornos menos claros sobre motivos y actores asociados al fenómeno. Este documento es fruto de...

  14. Marco legal en la protección ambiental de los bosques nativos

    OpenAIRE

    POHL SCHNAKE, VERÓNICA; Vallejos, Víctor Hugo

    2009-01-01

    Con este trabajo se pretende contribuir al debate en torno a los bosques nativos de nuestro país en el marco de la reciente ley 26.331/07 de "Presupuestos mínimos de protección ambiental de los bosques nativos" y su aún más reciente reglamentación. Se realiza en primer término una breve referencia al encuadre de la legislación ambiental en nuestro país, luego se presentan algunos resultados del Primer Inventario Forestal del año 2001. En una segunda instancia se analizan los principales aspec...

  15. Finanzas públicas bajo competencia política : Marco federal y evidencia de Argentina

    OpenAIRE

    Rumi, Cecilia

    2006-01-01

    Tres trabajos de investigación independientes indagan en la relación que establecen la competencia entre partidos políticos y las finanzas públicas en un marco federal. ¿Cómo afectan las consecuencias de esa pugna entre partidos a la política fiscal? A partir de los datos que se desprenden de la evidencia empírica sujeta a diferentes escenarios, tanto para el gobierno nacional como para las jurisdicciones subnacionales, esta tesis aborda ese interrogante para el que propone nuevos instrumento...

  16. Marco de intervención logopédica en dislexia del desarrollo

    OpenAIRE

    Jiménez-Fernández, Gracia; Defior, Sylvia

    2014-01-01

    Este artículo tiene como objetivo proporcionar un marco de referencia para logopedas sobre la intervención psicoeducativa de la dislexia evolutiva. En primer lugar, se recogen los principales aspectos que debe incluir la intervención individual realizada por el logopeda, como son la mejora de la fluidez lectora, de las habilidades fonológicas y, en la mayoría de las ocasiones, de la comprensión lectora. Es fundamental que exista una relación de colaboración entre el logopeda y el ...

  17. Conceptualización y marco analítico explicativo del multilateralismo latinoamericano

    Directory of Open Access Journals (Sweden)

    Rita Giacalone

    2016-11-01

    Full Text Available Este artículo resume las principales conceptualizaciones del multilateralismo latinoamericano que aparecen en la literatura, a fin de identificar sus contribuciones y debilidades. A partir de esa identificación, se propone un proceso alternativo para conceptualizarlo que incluye variables descriptivas y explicativas, y tiene en cuenta el contexto del sistema regional, así como los intereses de los poderes regionales y otros actores estatales. El objetivo es evaluar si existe un marco analítico propio para el estudio del multilateralismo en América Latina.

  18. El marco penal de la pequeña delincuencia patrimonial y perspectivas de reforma

    OpenAIRE

    CORTINA ZAPICO, IVAN

    2014-01-01

    El presente estudio pretende un acercamiento a la figura del hurto, a través de un análisis de los elementos caracterizadores del tipo penal a la luz de la evolución doctrinal y jurisprudencial, exponiendo el marco normativo vigente tras las sucesivas reformas del Código Penal de 1995 y analizando las novedades planteadas en la futura reforma penal que se encuentra actualmente en tramitación parlamentaria. En este sentido, el trabajo gira en torno a una triple comparativa entre el tratamie...

  19. Aortic arch thrombectomy in a 2.8 kilogram neonate--a case report and review of the literature.

    Science.gov (United States)

    Omeje, Ikenna; Ram, Awat; Kostolny, Martin

    2013-02-01

    Aortic arch thrombus is a rare occurrence in neonates. In the few described cases, this has mainly been associated with sepsis or early postnatal interventions, such as insertion of umbilical arterial line. We describe a case of occlusive aortic arch thrombus in a neonate who presented with signs of critical coarctation and successfully underwent surgical thrombectomy on deep hypothermic circulatory arrest. We also present a review of the most recently published cases of aortic arch thrombus in neonates and the treatment options employed.

  20. 注重建筑的完整性及其与环境之间的复杂关系——访Marco Piva设计事务所创始人Marco Piva

    Institute of Scientific and Technical Information of China (English)

    Greta Gabaglio; 黄婧

    2015-01-01

    Marco Piva毕业于米兰理工大学,1977年创立了DADA事务所,是激进时代具有代表性的事务所之一。1987年至1990年Marco Piva被任命为意大利总统委员会ADI成员以及意大利工业设计协会成员。1987年Marco Piva创立意大利国际设计协会IDA,连接起意大利设计界与国际范围内其他设计行业的交流。1990年Marco Piva设计事务所成立。1988年至1991年Marco Piva担任欧洲共同体"春日项目"意大利专员,致力于创新与技术的交流与传播。