31 results on '"Gallegos R"'
Search Results
2. PCO2 and room air saturation values in premature infants at risk for bronchopulmonary dysplasia
- Author
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Kaempf, J W, Campbell, B, Brown, A, Bowers, K, Gallegos, R, and Goldsmith, J P
- Published
- 2008
- Full Text
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3. Flash radiography with 24 GeV/c protons.
- Author
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Morris, C. L., Ables, E., Alrick, K. R., Aufderheide, M. B., Barnes, P. D., Buescher, K. L., Cagliostro, D. J., Clark, D. A., Clark, D. J., Espinoza, C. J., Ferm, E. N., Gallegos, R. A., Gardner, S. D., Gomez, J. J., Greene, G. A., Hanson, A., Hartouni, E. P., Hogan, G. E., King, N. S. P., and Kwiatkowski, K.
- Subjects
FLASH radiography ,GERMANIUM ,PROTONS ,RADIOGRAPHY ,HADRONS - Abstract
The accuracy of density measurements and position resolution in flash (40 ns) radiography of thick objects with 24 Gev/c protons is investigated. A global model fit to step wedge data is shown to give a good description spanning the periodic table. The parameters obtained from the step wedge data are used to predict transmission through the French Test Object (FTO), a test object of nested spheres, to a precision better than 1%. Multiple trials have been used to show that the systematic errors are less than 2%. Absolute agreement between the average radiographic measurements of the density and the known density is 1%. Spatial resolution has been measured to be 200 μm at the center of the FTO. These data verify expectations of the benefits provided by high energy hadron radiography for thick objects. [ABSTRACT FROM AUTHOR]
- Published
- 2011
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4. P09-16: Catechols as potential endocrine-disrupting compounds.
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Alva Gallegos, R., Carazo, A., Jirkovský, E., and Mladěnka, P.
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- *
ENDOCRINE disruptors - Published
- 2023
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5. P12-19 Toxicity of simple catechols and their interaction with estrogen receptor.
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Gallegos, R. Alva, Carazo, A., and Mladěnka, P.
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ESTROGEN receptors - Published
- 2022
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6. Study of Different Involutive Changes in Bone Mineral Density Measured inWard's Triangle and Trabecular Volume Measured in Iliac Crest in Relation to Age.
- Author
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Castillo, R. F. and Gallegos, R. F.
- Abstract
Copyright of West Indian Medical Journal is the property of West Indian Medical Journal (WIMJ) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2015
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7. DARHT-II Long-Pulse Beam-Dynamics Experiments.
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Ekdahl, C., Abeyta, E.O., Bartsch, R., Caudill, L., Chan, K.C.D., Dalmas, D., Eversole, S., Gallegos, R., Harrison, J., Holzscheiter, M., Johnson, J., Jacquez, E., McCuistian, B.T., Montoya, N., Nath, S., Nielsen, K., Oro, D., Rodriguez, L., Rodriguez, P., and Rowton, L.
- Published
- 2005
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8. Beam Stability Experiments on DARHT-II.
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Ekdahl, C., Aragon, P., Abeyta, E.O., Bartsch, R., Caudill, L., Chan, K.C.D., Dalmas, D., Eversole, S., Gallegos, R., Harrison, J., Johnson, J., Jacquez, E., McCuistian, B.T., Montoya, N., Nath, S., Nielsen, K., Oro, D., Rodriguez, L., Rodriguez, P., and Rowton, L.
- Published
- 2005
- Full Text
- View/download PDF
9. PCO2 and room air saturation values in premature infants at risk for bronchopulmonary dysplasia.
- Author
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Kaempf, J. W., Campbell, B., Brown, A., Bowers, K., Gallegos, R., and Goldsmith, J. P.
- Subjects
BRONCHOPULMONARY dysplasia ,CARBON dioxide ,BIRTH weight ,ARTIFICIAL respiration ,LUNG injuries - Abstract
Objective:To determine the capillary partial pressure of carbon dioxide (PCO
2 ) and room air transcutaneous hemoglobin saturation (RA SAT) at 36 weeks’ postmenstrual age (PMA) in infants born with weight between 501 and 1250 g.Study Design:Multicenter, prospective investigation with primary data collection within 72 h of 36 weeks PMA or discharge, whichever first. PCO2 and RA SAT determinations were done at rest on infants not requiring mechanical ventilation or nasal continuous positive airway pressure (NCPAP).Result:A total of 220 infants were enrolled (mean gestational age 27.7 weeks, mean birthweight 951 g). In infants with traditionally defined chronic lung disease (CLD) compared to those without CLD, the mean PCO2 was significantly higher (54 versus 45 mm Hg) and the median RA SAT significantly lower (<80 versus 97%). In infants with the new classification of bronchopulmonary dysplasia (BPD), there was a significant linear trend toward increasing PCO2 with increasing severity of BPD (45, 47, 54 and 62 mm Hg in No, Mild, Moderate and Severe BPD). There was a significant linear trend toward decreasing RA SAT with increasing severity of BPD (97, 95 <80, <80% in No, Mild, Moderate and Severe BPD).Conclusion:Defining CLD as BPD based upon a RA SAT test is a more discriminate, objective method to categorize lung injury. PCO2 is an objective measure of lung function that inversely correlates with RA SAT. These determinations done together at 36 weeks PMA may provide more precise and accurate estimates of lung injury that might allow for better understanding of pulmonary therapies and clearer comparison of BPD rates and severities among NICUs.Journal of Perinatology (2008) 28, 48–54; doi:10.1038/sj.jp.7211859; published online 22 November 2007 [ABSTRACT FROM AUTHOR]- Published
- 2008
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10. Long-pulse beam stability experiments on the DARHT-II linear induction accelerator.
- Author
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Ekdahl, Carl, Abeyta, E. O., Aragon, P., Archuleta, R., Bartsch, R., Bender, H., Briggs, R., Broste, W., Carlson, C., Chan, K. C. D., Dalmas, D., Eversole, S., Frayer, D., Gallegos, R., Harrison, J., Hughes, T., Jacquez, E., Johnson, D., Johnson, J., and McCuistian, B. Trent
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PARTICLE beams ,PARTICLES (Nuclear physics) ,PLASMA accelerators ,PARTICLE accelerators ,ELECTRON beams - Abstract
When completed, the DARHT-II linear induction accelerator (LIA) will produce a 2-kA, 17-MeV electron beam in a 1600-ns flat-top pulse. In initial tests, DARHT-II accelerated beams with current pulse lengths from 500 to 1200 ns full-width at half-maximum (FWHM) with more than 1.2-kA, 12.5-MeV peak current and energy. Experiments have now been done with a ∼1600-ns pulse length. These pulse lengths are all significantly longer than any other multimegaelectronvolt LIA, and they define a novel regime for high-current beam dynamics, especially with regard to beam stability. Although the initial tests demonstrated insignificant beam-breakup instability (BBU), the pulse length was too short to determine whether ion-hose instability would be present toward the end of a long, 1600-ns pulse. The 1600-ns pulse experiments reported here resolved these issues for the long-pulse DARHT-II LIA. [ABSTRACT FROM PUBLISHER]
- Published
- 2006
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11. Initial Electron-Beam Results From the DARHT-II Linear Induction Accelerator.
- Author
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Ekdahl, Carl, Abeyta, E. O., Bender, H., Broste, W., Carison, C., Caudill, L., Chan, K. C. D., Chen, Y. J., Dalmas, D., Durtschi, G., Eversole, S., Eylon, S., Fawley, W., Frayer, D., Gallegos, R., Harrison, J., Henestroza, E., Holzscheiter, M., Houck, T., and Hughes, T.
- Subjects
BETATRONS ,ELECTRON beams ,DIODES ,ELECTRON accelerators ,PARTICLE beams ,PARTICLE accelerators - Abstract
The DARHT-II linear-induction accelerator has been successfully operated at 1.2-1.3 kA and 12.5-12.7 MeV to demonstrate the production and acceleration of an electron beam. Beam pulse lengths for these experiments were varied from 0.5 ps to 1.2 ps full-width half-maximum. A low-frequency inductance-capacitance (LC) oscillation of diode voltage and current resulted in an oscillation of the beam position through interaction with an accidental (static) magnetic dipole in the diode region. There was no growth in the amplitude of this oscillation after propagating more than 44 m through the accelerator, and there was no loss of beam current that could be measured. The results of these initial experiments are presented in this paper. [ABSTRACT FROM AUTHOR]
- Published
- 2005
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12. PROVANT® Wound-Closure System Accelerates Closure of Pressure Wounds in a Randomized, Double-Blind, Placebo-Controlled Trial.
- Author
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RITZ, M. C., GALLEGOS, R., CANHAM, M. B., ESKALAI, M., and GEORGE, F. R.
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- 2002
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13. Commissioning the darht-II scaled accelerator.
- Author
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Ekdahl, C., Abeyta, E.O., Aragon, P., Archuleta, R., Bartsch, R., Dalmas, D., Eversole, S., Gallegos, R., Harrison, J., Johnson, J., Jacquez, E., McCuistian, B.T., Montoya, N., Nath, S., Oro, D., Rowton, L., Sanchez, M., Scarpetti, R., Schauer, M., and Seitz, G.
- Published
- 2007
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14. Commissioning the DARHT-II scaled accelerator downstream transport.
- Author
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Schulze, M., Abeyta, E.O., Aragon, P., Archuleta, R., Barraza, J., Dalmas, D., Ekdahl, C., Esquibel, K., Eversole, S., Gallegos, R., Harrison, J., Johnson, J., Jacquez, E., Marroquin, P., McCuistian, B.T., Mitchell, R., Montoya, N., Nath, S., Rowton, L., and Scarpetti, R.
- Published
- 2007
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15. Development of a science project based on the use of several intelligences
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Gallegos Reséndiz, Cut, Sagaz Olvera, Marco Antonio, Sánchez Gregorio, Axini, Huerto Delgadillo, Ma. de Lourdes, and Sánchez Ramos, Marco Antonio
- Subjects
inteligencia ,creatividad ,ciencia ,arte ,aprendizaje cooperativo ,contextos educativos ,intelligence ,creativity ,science ,art ,cooperative learning ,educational contexts ,Social Sciences - Abstract
Solve and create problems are characteristic of an intelligent and creative mind. From a practical sense, intelligence procedures and leads to correct results but creativity allow us to innovate on procedures, interpretation of results and generated products. This project combines science and art, aiming to promote intelligence and creativity in students in the second grade of primary school. The work is part of the study of general aspects of the biology of insects in various learning environments. The results indicate a process of understanding the basic structures of insects, the biological sense of communication sounds and movements of the basic elements of music making, of how an orchestra is organized and a dance and especially the resolution of problems related to science and art.
- Published
- 2013
16. ¿Con qué saboreamos?: tareas y experiencias para un taller de ciencias
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Sánchez Ramos, M.A., Gallegos Reséndiz, C., Huerto Delgadillo, L., and Ribeiro Palacios, M.
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Ciencia ,métodos ,percepción al sabor ,creatividad ,inteligencia. ,Social Sciences - Abstract
En un grupo de primero de primaria hicimos una pregunta aparentemente simple: ¿Con qué saboreamos? La respuesta inmediata entre los niños fue “con la lengua” y, aunque ésta no fue totalmente correcta, sirvió para iniciar un proyecto en el que se ofreció a los niños la oportunidad para observar, proponer hipótesis, establecerobjetivos y buscar métodos que les ayudaran a resolver la pregunta. Planteamos 4 experiencias cuya finalidad fue que los niños extendieran sus conocimientos y su comprensión sobre un proceso aparentemente sencillo como es la percepción al sabor. Primero cuestionamos la idea de que fuera la lengua el lugar primordial para la detección del sabor (experiencia 1); después incluimos al sentido del olfato como parte de la percepción del sabor (experiencia 2); tratamos de convencer a los niños de que el olor es el elemento más importante para detectar el sabor (experiencia 3); por último discutimos la posibilidad de que fuera el cerebro el que realmente saborea (experiencia 4).
- Published
- 2008
17. Salicide technology for fully-depleted SOI CMOS devices.
- Author
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Gallegos, R. and Sullivan, M.
- Published
- 1990
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18. The neutron imaging system fielded at the National Ignition Facility
- Author
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Fittinghoff D.N., Atkinson D.P., Bower D.E., Drury O.B., Dzenitis J.M., Frank M., Liddick S.N., Moran M.J., Roberson G.P., Weiss P.B., Grim G.P., Aragonez R.J., Archuleta T.N., Batha S.H., Clark D.D., Clark D.J., Danly C.R., Day R.D., Fatherley V.E., Finch J.P., Garcia F.P., Gallegos R.A., Guler N., Hsu A.H., Jaramillo S.A., Loomis E.N., Mares D., Martinson D.D., Merrill F.E., Morgan G.L., Munson C., Murphy T.J., Oertel J.A., Polk P.J., Schmidt D.W., Tregillis I.L., Valdez A.C., Volegov P.L., Wang T.F., Wilde C.H., Wilke M.D., Wilson D.C., Buckles R.A., Cradick J.R., Kaufman M.I., Lutz S.S., Malone R.M., and Traille A.
- Subjects
Physics ,QC1-999 - Abstract
We have fielded a neutron imaging system at the National Ignition Facility to collect images of fusion neutrons produced in the implosion of inertial confinement fusion experiments and scattered neutrons from (n, n′) reactions of the source neutrons in the surrounding dense material. A description of the neutron imaging system is presented, including the pinhole array aperture, the line-of-sight collimation, the scintillator-based detection system and the alignment systems and methods. Discussion of the alignment and resolution of the system is presented. We also discuss future improvements to the system hardware.
- Published
- 2013
- Full Text
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19. First downscattered neutron images from Inertial Confinement Fusion experiments at the National Ignition Facility
- Author
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Guler Nevzat, Aragonez Robert J., Archuleta Thomas N., Batha Steven H., Clark David D., Clark Deborah J., Danly Chris R., Day Robert D., Fatherley Valerie E., Finch Joshua P., Gallegos Robert A., Garcia Felix P., Grim Gary, Hsu Albert H., Jaramillo Steven A., Loomis Eric N., Mares Danielle, Martinson Drew D., Merrill Frank E., Morgan George L., Munson Carter, Murphy Thomas J., Oertel John A., Polk Paul J., Schmidt Derek W., Tregillis Ian L., Valdez Adelaida C., Volegov Petr L., Wang Tai-Sen F., Wilde Carl H., Wilke Mark D., Wilson Douglas C., Atkinson Dennis P., Bower Dan E., Drury Owen B., Dzenitis John M., Felker Brian, Fittinghoff David N., Frank Matthias, Liddick Sean N., Moran Michael J., Roberson George P., Weiss Paul, Buckles Robert A., Cradick Jerry R., Kaufman Morris I., Lutz Steve S., Malone Robert M., and Traille Albert
- Subjects
Physics ,QC1-999 - Abstract
Inertial Confinement Fusion experiments at the National Ignition Facility (NIF) are designed to understand and test the basic principles of self-sustaining fusion reactions by laser driven compression of deuterium-tritium (DT) filled cryogenic plastic (CH) capsules. The experimental campaign is ongoing to tune the implosions and characterize the burning plasma conditions. Nuclear diagnostics play an important role in measuring the characteristics of these burning plasmas, providing feedback to improve the implosion dynamics. The Neutron Imaging (NI) diagnostic provides information on the distribution of the central fusion reaction region and the surrounding DT fuel by collecting images at two different energy bands for primary (13–15 MeV) and downscattered (10–12 MeV) neutrons. From these distributions, the final shape and size of the compressed capsule can be estimated and the symmetry of the compression can be inferred. The first downscattered neutron images from imploding ICF capsules are shown in this paper.
- Published
- 2013
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20. Comparing neutron and X-ray images from NIF implosions
- Author
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Wilson D.C., Aragonez R.J., Archuleta T.N., Atkinson D.P., Barrios M.A., Batha S.H., Bower D.E., Bradley D.K., Buckles R.A., Clark D.D., Clark D.S., Clark D.J., Cradick J.R., Danly C.R., Day R.D., Dzenitis J.M., Drury O.B., Fatherley V.E., Felker B., Finch J.P., Fittinghoff D.N., Frank M., Gallegos R.A., Garcia F.P., Glenn S.M., Grim G.P., Guler N., Hsu A.H., Izumi N., Jaramillo S.A., Jones O.S., Kaufman M.I., Kilkenny J.D., Kyrala G.A., Pape S. Le, Liddick S.N., Loomis E.N., Lutz S.S., Ma T., Mackinnon A.J., Malone R.M., Mares D., Marinak M.M., Martinson D.D., McKenty P., Meezan N.S., Merrill F.E., Moran M.J., Morgan G.L., Munson C., Munro D.H., Murphy T.J., Oertel J.A., Patel M.V., Polk P.J., Regan S., Roberson G.P., Schmidt D.W., Sepke S.M., Spears B.K., Tommasini R., Town R., Traille A., Tregillis I.L., Valdez A.C., Volegov P.L., Wang T.-S.F., Weiss P., Wilde C.H., and Wilke M.D.
- Subjects
Physics ,QC1-999 - Abstract
Directly laser driven and X-radiation driven DT filled capsules differ in the relationship between neutron and X-ray images. Shot N110217, a directly driven DT-filled glass micro-balloon provided the first neutron images at the National Ignition Facility. As seen in implosions on the Omega laser, the neutron image can be enclosed inside time integrated X-ray images. HYDRA simulations show the X-ray image is dominated by emission from the hot glass shell while the neutron image arises from the DT fuel it encloses. In the absence of mix or jetting, X-ray images of a cryogenically layered THD fuel capsule should be dominated by emission from the hydrogen rather than the cooler plastic shell that is separated from the hot core by cold DT fuel. This cool, dense DT, invisible in X-ray emission, shows itself by scattering hot core neutrons. Germanium X-ray emission spectra and Ross pair filtered X-ray energy resolved images suggest that germanium doped plastic emits in the torus shaped hot spot, probably reducing the neutron yield.
- Published
- 2013
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21. Summary of the first neutron image data collected at the National Ignition Facility
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Grim Gary P., Archuleta Thomas N., Aragonez Robert J., Atkinson Dennis P., Batha Steven H., Barrios Maria A., Bower Dan E., Bradley David K., Buckles Robert A., Clark David D., Clark Deborah J., Cradick Jerry R., Danly Chris, Drury Owen B., Fatherley Valerie E., Finch Joshua P., Garcia Felix P., Gallegos Robert A., Guler Nevzat, Glenn Steven M., Hsu Albert H., Izumi Nobuhiko, Jaramillo Steven A., Kyrala George A., Pape Sebastien Le, Loomis Eric N., Mares Danielle, Martinson Drew D., Ma Tammy, Mackinnon Andrew J., Merrill Frank E., Morgan George L., Munson Carter, Murphy Thomas J., Polk Paul J., Schmidt Derek W., Tommasini Riccardo, Tregillis Ian L., Valdez Adelaida C., Volegov Petr L., Wang Tai-Sen F., Wilde Carl H., Wilke Mark D., Wilson Douglas C., Dzenitis John M., Felker Brian, Fittinghoff David N., Frank Matthias, Liddick Sean N., Moran Michael J., Roberson George P., Weiss Paul, Kauffman Morris I., Lutz Steve S., Malone Robert M., and Traille Albert
- Subjects
Physics ,QC1-999 - Abstract
A summary of data and results from the first neutron images produced by the National Ignition Facility (NIF), Lawrence Livermore National Laboratory, Livermore, CA, USA are presented. An overview of the neutron imaging technique is presented, as well as a synopsis of data and measurements made to date. Data from directly driven, DT filled microballoons, as well as indirectly driven, cryogenically layered ignition experiments are presented. The data show that the primary cores from directly driven implosions are approximately twice as large, 64 ± 3 μm, as indirectly driven cores, 25 ± 4 and 29 ± 4 μm and more asymmetric, P2/P0 = 47% vs. − 14% and 7%. Further, comparison with the size and shape of X-ray image data on the same implosions show good agreement, indicating X-ray emission is dominated by the hot regions of the implosion.
- Published
- 2013
- Full Text
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22. Recurrent post-partum coronary artery dissection
- Author
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Resnic Frederic S, Kraemer Bernhard, Khalpey Zain, Rajab Taufiek K, and Gallegos Robert P
- Subjects
Surgery ,RD1-811 ,Anesthesiology ,RD78.3-87.3 - Abstract
Abstract Coronary artery dissection is a rare but well-described cause for myocardial infarction during the post-partum period. Dissection of multiple coronary arteries is even less frequent. Here we present a case of recurrent post-partum coronary artery dissections. This unusual presentation poses unique problems for management. A 35 year-old female, gravida 3 para 2, presented with myocardial infarction 9 weeks and 3 days post-partum. Cardiac catheterization demonstrated left anterior descending (LAD) dissection but an otherwise normal coronary anatomy. The lesion was treated with four everolimus eluting stents. Initially the patient made an unremarkable recovery until ventricular fibrillation arrest occurred on the following day. Unsynchronized cardioversion restored a normal sinus rhythm and repeat catheterization revealed new right coronary artery (RCA) dissection. A wire was passed distally, but it was unclear whether this was through the true or false lumen and no stents could be placed. However, improvement of distal RCA perfusion was noted on angiogram. Despite failure of interventional therapy the patient was therefore treated conservatively. Early operation after myocardial infarction has a significantly elevated risk of mortality and the initial dissection had occurred within 24 hours. This strategy proved successful as follow-up transthoracic echocardiography after four months demonstrated a preserved left ventricular ejection fraction of 55-60% without regional wall motion abnormalities. The patient remained asymptomatic from a cardiac point of view.
- Published
- 2010
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23. DARHT-II Long-Pulse Electron Beam.
- Author
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Ekdahl, C., Abeyta, E.O., Aragon, P., Archuleta, R., Bartsch, R., Dalmas, D., Esquibel, K., Gallegos, R., Harrison, J., Johnson, J., Jacquez, E., McCuistian, B.T., Montoya, N., Nath, S., Oro, D., Sanchez, M., Scarpetti, R., Schauer, M., Bender, H., and Broste, W.
- Published
- 2007
- Full Text
- View/download PDF
24. First beam at DARHT-II.
- Author
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Ekdahl, C., Abeyta, E.O., Caudill, L., Chan, K.C.D., Dalmas, D., Eversole, S., Gallegos, R., Harrison, J., Holzscheiter, M., Johnson, J., Jacquez, E., McCuistian, B.T., Montoya, N., Nielsen, K., Oro, D., Rodriguez, L., Rodriguez, P., Sanchez, M., Schauer, M., and Simmons, D.
- Published
- 2003
- Full Text
- View/download PDF
25. The neutron imaging diagnostic at NIF (invited).
- Author
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Merrill, F. E., Bower, D., Buckles, R., Clark, D. D., Danly, C. R., Drury, O. B., Dzenitis, J. M., Fatherley, V. E., Fittinghoff, D. N., Gallegos, R., Grim, G. P., Guler, N., Loomis, E. N., Lutz, S., Malone, R. M., Martinson, D. D., Mares, D., Morley, D. J., Morgan, G. L., and Oertel, J. A.
- Subjects
INERTIAL confinement fusion ,IMAGING systems ,NEUTRON sources ,PLASMA diagnostics - Abstract
A neutron imaging diagnostic has recently been commissioned at the National Ignition Facility (NIF). This new system is an important diagnostic tool for inertial fusion studies at the NIF for measuring the size and shape of the burning DT plasma during the ignition stage of Inertial Confinement Fusion (ICF) implosions. The imaging technique utilizes a pinhole neutron aperture, placed between the neutron source and a neutron detector. The detection system measures the two dimensional distribution of neutrons passing through the pinhole. This diagnostic has been designed to collect two images at two times. The long flight path for this diagnostic, 28 m, results in a chromatic separation of the neutrons, allowing the independently timed images to measure the source distribution for two neutron energies. Typically the first image measures the distribution of the 14 MeV neutrons and the second image of the 6-12 MeV neutrons. The combination of these two images has provided data on the size and shape of the burning plasma within the compressed capsule, as well as a measure of the quantity and spatial distribution of the cold fuel surrounding this core. [ABSTRACT FROM AUTHOR]
- Published
- 2012
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26. Implementing potentially better practices to improve neonatal outcomes after reducing postnatal dexamethasone use in infants born between 501 and 1250 grams.
- Author
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Kaempf JW, Campbell B, Sklar RS, Arduza C, Gallegos R, Zabari M, Brown A, and McDonald JV
- Published
- 2003
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27. Membrane attachment and DNA bending at the origin of the Escherichia coli chromosome
- Author
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Schaechter, M., Polaczek, P., and Gallegos, R.
- Published
- 1991
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28. ChemInform Abstract: Asymmetric Syntheses of (2S,3S,6S)-(X), (2S,3S,6R)-, and (2R,3R,6S)-2, 3-Methano-2,6-diaminopimelic Acids. Studies Directed to the Design of Novel Substrate-Based Inhibitors of L,L-Diaminopimelate (DAP) Epimerase.
- Author
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WILLIAMS, R. M., FEGLEY, G. J., GALLEGOS, R., SCHAEFER, F., and PRUESS, D. L.
- Published
- 1996
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29. ChemInform Abstract: Selective Oxidation Using Ultrathin Nitrogen-Rich Silicon Surface Layers Grown by Rapid Thermal Processing.
- Author
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PAZ DE ARAUJO, C. A., HUANG, Y. P., and GALLEGOS, R.
- Published
- 1989
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30. Modulation of the hydrophilic character and influence on the biocompatibility of polyurethane-siloxane based hybrids
- Author
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San Roman, J., Jiménez-Gallegos, R., Téllez-Jurado, L., and Rodríguez-Lorenzo, L. M.
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Sol-gel process ,Biomedical applications ,Hybrid Materials ,Bioactivity ,Polyurethane ,Proceso sol-gel ,Aplicaciones biomédicas ,Materiales Híbridos ,Bioactividad ,Poliuretano ,Clay industries. Ceramics. Glass ,TP785-869 - Abstract
Organic-inorganic hybrid materials are known for their outstanding chemical and physical properties. Although some studies have been published regarding the use of hybrids for biomedical applications, relationship between hydrophilic character and biodegradation, bioactivity and biocompatibility has not been studied yet. The sol–gel method has been chosen for the manufacturing of siloxane-polyurethane hybrids for the exceptional potential of the method to obtain nanostructured materials. The effect of the amount of the urethane oligomer (OPU) on the structure, hydrophilic character, degradability, bioactivity and citotoxicity was investigated. Gelling time of these hybrids increases linearly with the decrease on the Siloxane/OPU ratio up to an 80/20 value. Hydrophilic character of the hybrids can be modulated and affects dramatically the degradation rate of the specimens. A hybrid with a 50/50 Siloxane/OPU ratio displayed an appropriate degradation rate, bioactivity and lack of cell toxicity that makes this material a candidate for further studies for applications in bone regeneration.Los materiales híbridos Orgánico-Inorgánico son conocidos por sus excepcionales propiedades químicas y físicas. Aunque se han publicado algunos estudios respecto al uso de híbridos para aplicaciones biomédicas, aun faltan estudios que determinen la relación que existe entre el carácter hidrofílico de estos materiales y las propiedades que les permiten ser utilizados como biomateriales: degradación, bioactividad y biocompatibilidad. El método sol-gel se ha escogido para la fabricación de híbridos debido a la posibilidad de obtener materiales nanoestructurados que comprenden un componente orgánico y un inorgánico. Se investigó el efecto de la cantidad del olígomero de uretano (OPU) sobre la estructura, el carácter hidrofílico, la degradabilidad, la bioactividad y la citotoxicidad. El tiempo de gelificación de estos híbridos incrementa linealmente con la disminución en la relación Siloxano/OPU hasta un valor de 80/20. El carácter hidrofílico de los híbridos se puede modular y afectar considerablemente la velocidad de degradación de las muestras. Un híbrido con una relación 50/50 Siloxane/OPU muestra una velocidad de degradación, una bioactividad y falta de toxicidad que hacen a este material un candidato para futuros estudios para aplicaciones en regeneración ósea.
- Published
- 2011
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31. Assessment of nutritional status in renal transplant patients during 5 years of follow-up
- Author
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Fernández Castillo, Rafael, Fernández Gallegos, Ruth, Alvarez Serrano, Maria Adelaida, Núñez Negrillo, Ana María, Navarro Pérez, Carmen Flores, Quero Alfonso, Ángel I., [Fernández Castillo,R, Alvarez Serrano,MA, Nuñez Negrillo,AM, Navarro Perez,CF, and Quero Alfonso,AI] Universidad de Granada, Facultad de Ciencias de la Salud, Departamento de Enfermería. [Fernandez Gallegos,R] Servicio de Nefrología Unidad de Hemodiálisis, Hospital Universitario Virgen de las Nieves, Granada. España.
- Subjects
Índice de Masa Corporal ,Desnutrición ,Malnutrition ,Phenomena and Processes::Physiological Phenomena::Body Constitution::Body Weights and Measures::Body Mass Index [Medical Subject Headings] ,Obesidad ,Phenomena and Processes::Physiological Phenomena::Physiological Processes::Growth and Development::Growth::Body Size::Body Weight::Body Weight Changes::Weight Gain [Medical Subject Headings] ,Renal transplantation ,Body Mass Index (BMI) ,Phenomena and Processes::Physiological Phenomena::Body Constitution::Body Weights and Measures::Body Size::Body Weight::Overweight::Obesity [Medical Subject Headings] ,Body Mass Index ,Indice de Masa Corporal ,Grado de Obesidad ,Trasplante renal ,Obesity degree ,Analytical, Diagnostic and Therapeutic Techniques and Equipment::Surgical Procedures, Operative::Transplantation::Organ Transplantation::Kidney Transplantation [Medical Subject Headings] ,Transplante renal ,Phenomena and Processes::Physiological Phenomena::Nutritional Physiological Phenomena::Nutritional Status [Medical Subject Headings] ,Obesity ,Índice de masa corporal (IMS) ,Diseases::Nutritional and Metabolic Diseases::Nutrition Disorders::Malnutrition [Medical Subject Headings] - Abstract
Introducción: El aumento de peso y la malnutrición después del trasplante renal es frecuente, y el sobrepeso y la obesidad resultante se asocia con complicaciones graves de salud. Por el contrario, la prevalencia de la desnutrición en pacientes con trasplante renal y sus efectos en el resultado del trasplante de riñón se subestima. Objetivos: El objetivo de este trabajo fue evaluar el estado nutricional de pacientes trasplantados renales y determinar si en el periodo de cinco años de seguimiento, estos pacientes sufren alteraciones que sugieran deterioro nutricional. Métodos: La muestras estuvo formada por 119 pacientes trasplantados renales, que asistieron durante cinco años a la consulta postrasplante. A todos los pacientes se realizaron determinaciones de colesterol total, lipoproteínas de baja densidad (LDL), lipoproteínas de alta densidad (HDL), concentraciones de triglicéridos y ferritina (Ft), y se les efectuaron mediciones antropométricas de peso, altura e IMC. Los pacientes fueron divididos en tres grupos según la tasa de filtración glomerular : Grupo 1: < 60 mL/min, Grupo 2: 89–60 mL/min Grupo 3: ≥ 90 mL/min. Resultados: El peso e IMC tiende a disminuir en el grupo 3 mientras aumenta en el resto de grupos. Se produce una disminución de Colesterol total, HDL, LDL, Trigliceridos y Ferritina menos acusado en el grupo 3. Conclusiones: Tras cinco años se puede observar una reducción significativa de los parametros bioquímicos nutricionales en general, así mismo el estado nutricional esta estrechamente relacionado y es directamente proporcional a la función del injerto., Introduction: Weight gain and malnutrition after kidney transplantation is common and the resulting overweight and obesity is associated with serious health complications. By contrast, the prevalence of malnutrition in patients with renal transplantation and its impact on the outcome of kidney transplantation is underestimated. Objectives: The aim of this study was to evaluate the nutritional status of renal transplant patients and determine if the five-year follow-up, these patients undergo alterations that suggest nutritional deterioration. Methods: The sample consisted of 119 renal transplant patients who attended for five years post-transplant consultation. All patients measurements of total cholesterol, low density lipoprotein (LDL), high density lipoprotein (HDL), triglycerides and ferritin (Ft) were performed. and anthropometric measurements were made of weight, height and BMI. Patients were divided into three groups according to GFR Group 1
- Published
- 2014
- Full Text
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