DSpace Angular :: Browsing by Author "Garcia, A."

Browsing by Author "Garcia, A."

Now showing 1 - 16 of 16

A 37-Year-Old Woman with Dyspnea and Stridor
(2016) Gando, S.; Garcia, A.; Labarca, G.; Fernandez-Bussy, S.
A woman with morbid obesity and a diagnosis of asthma since childhood sought medical attention because of unrelenting dyspnea and nocturnal stridor. Spirometry revealed a restrictive pattern with amputation of inspiratory and expiratory maximum flow rates. She was referred for further diagnostic evaluation.
A DESGW Search for the Electromagnetic Counterpart to the LIGO/Virgo Gravitational-wave Binary Neutron Star Merger Candidate S190510g
(2020) Garcia, A.; Morgan, R.; Herner, K.; Palmese, A.; Soares Santos, M.; Annis, J.; Brout, D.; Vivas, A. K.; Drlica Wagner, A.; Quirola Vásquez, Jonathan Alexander; Santana Silva, L.; Tucker, D. L.; Allam, S.; Wiesner, M.; Garcia Bellido, J.; Gill, M. S. S.; Sako, M.; Kessler, R.; Davis, T. M.; Scolnic, D.; Casares, J.; Chen, H.; Conselice, C.; Cooke, J.; Doctor, Z.; Foley, R. J.; Horvath, J.; Howell, D. A.; Kilpatrick, C. D.; Lidman, C.; Olivares, E. F.; Paz Chinchon, F.; Pineda G., J.; Rest, A.; Sherman, N.; Abbott, T. M. C.; Aguena, M.; Avila, S.; Bertin, E.; Bhargava, S.; Brooks, D.; Burke, D. L.; Rosell, A. C.; Kind, M. C.; Carretero, J.; Costanzi, M.; da Costa, L. N.; Desai, S.; Diehl, H. T.; Dietrich, J. P.
Biofilm formation by Acinetobacter baumannii
(1996) Vidal, Roberto; Dominguez, M.; Urrutia, H.; Bello, H.; Gonzalez, G.; Garcia, A.; Zemelman, R.
Constraints on the Physical Properties of GW190814 through Simulations Based on DECam Follow-up Observations by the Dark Energy Survey
(2020) Morgan, R.; Soares Santos, M.; Annis, J.; Herner, K.; Garcia, A.; Palmese, A.; Drlica Wagner, A.; Kessler, R.; Garcia Bellido, J.; Quirola Vásquez, Jonathan Alexander; Bachmann, T. G.; Sherman, N.; Allam, S.; Bechtol, K.; Bom, C. R.; Brout, D.; Butler, R. E.; Butner, M.; Cartier, R.; Chen, H.; Conselice, C.; Cook, E.; Davis, T. M.; Doctor, Z.; Farr, B.; Figueiredo, A. L.; Finley, D. A.; Foley, R. J.; Galarza, J. Y.; Gill, M. S. S.; Gruendl, R. A.; Holz, D. E.; Kuropatkin, N.; Lidman, C.; Lin, H.; Malik, U.; Mann, A. W.; Marriner, J.; Marshall, J. L.; Martinez Vazquez, C. E.; Meza, N.; Neilsen, E.; Nicolaou, C.; Olivares, E. F.; Paz Chinchon, F.; Points, S.; Rodriguez, O.; Sako, M.; Scolnic, D.; Smith, M.; Sobreira, F.; Tucker, D. L.; Vivas, A. K.
Economic sustainability of organic dairy sheep systems in central Spain
(2015) Toro Mujica, Paula; Garcia, A.; Aguilar González, Claudio; Vera, Raúl; Perea, J.; Angon, E.
Effect of imipenem and sulbactam on sessile cells of Acinetobacter baumannii growing in biofilm
(1997) Vidal, Roberto; Dominguez, M.; Urrutia, H.; Bello, H.; Garcia, A.; Gonzalez, G.; Zemelman, R.
Evaluation of sulfate rhizofiltration by Carpobrotus chilensis for treating mining waters
(2024) Tapia, Y.; Salazar, O.; Joven, A.; Castillo, B.; Urdiales, C.; Garcia, A.; Ihle, C.; Acuna, E.
Chile, the world's leading copper producer, generates significant volumes of mining waters, some of which cannot be recirculated into the production process. These mining waters are characterized by elevated sulfate (SO42-) concentrations, requiring sustainable management strategies for potential reuse. This study aims to evaluate the rhizofiltration technique using Carpobrotus chilensis for treating mining waters with a high SO(4)(2- )concentration. Initially, the mining waters exhibited a pH of 7.97 +/- 0.16 and a SO42- concentration of 2,743 +/- 137 mg L-1, while the control water had a pH of 7.88 +/- 0.08 and a SO42- concentration of 775 +/- 19.0 mg L-1. The plants were hydroponically cultivated in 40 L containers with mining waters and drinking water as a control. Over an 8-week period, the pH of the mining water decreased to 3.12 +/- 0.01, and the SO42- concentration declined to 2,200 +/- 110 mg L-1. Notably, the fresh weight of roots was significantly higher in plants grown in mining water (22.2 +/- 6.66 g) compared to those in the control treatment (14.3 +/- 4.28 g). However, an undesirable increase in the acidity was observed in the mining waters after rhizofiltration, which was attributed to hydrogen sulfate (HSO4-) and/or root exudates. Despite the unexpected increase in acidity, C. chilensis effectively reduced the concentration of SO42- in mining waters by 20%. Additionally, the C. chilensis roots accumulated 4.84 +/- 1.40% of sulfur (S), a level comparable to thiophore plants. This study provides evidence that this non-aquatic plant can be used in sulfate rhizofiltration. NOVELTY STATEMENT Caprobrotus chilensis is a good candidate for sulfate rhizolfiltration in mining waters. The accumulation of sulfur by the roots of Carpobrotus chilensis reached 4.84% Mining waters with a high concentration of sulfates require control of the redox potential
Incorporation of CuO nanoparticles into thin-film composite reverse osmosis membranes (TFC-RO) for antibiofouling properties
(SPRINGER, 2018) Garcia, A.; Rodriguez, B.; Ozturk, D.; Rosales, M.; Diaz, D. I.; Mautner, A.
The effect of the incorporation during the interfacial polymerization process of copper-oxide (CuO) nanoparticles in thin-film composite (TFC) reverse osmosis (RO) membrane on their antibiofouling and desalinization performance have been studied. Membranes were characterized by fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), atomic force microscopy (AFM), zeta potential and contact angle measurements. Bactericidal tests were performed using Escherichia coli and anti-adhesion properties were confirmed by fluorescence microscopy. Membrane performance using a cross flow cell was evaluated. XRD and SEM-EDX analyses confirmed the incorporation of these nanoparticles into the membrane. Similar contact angle, higher surface roughness and less negatively charged surface on modified membrane compared to that of the pristine membrane were observed. However, an excellent anti-adhesion and bactericidal effect were observed, mainly attributed to the copper toxicity. The desalination performance of the modified membrane showed an important salt rejection with stable water flux. In conclusion, the incorporation of CuO nanoparticles into TFC-RO membranes during the interfacial polymerization process is a potential alternative method to improve the antibiofouling capacities without impairing the performance of the membrane.
Low Spontaneous Breathing Effort during Extracorporeal Membrane Oxygenation in a Porcine Model of Severe Acute Respiratory Distress Syndrome
(2020) Dubo, S.; Oviedo, V.; Garcia, A.; Alegría Aguirre, Luz Katiushka; Garcia, P.; Valenzuela, E. D.; Damiani Rebolledo, L. Felipe; Araos, J.; Medina, T.; Retamal Montes, Jaime; Bachmann, M. C.; Basoalto, R.; Bravo, S.; Soto, D.; Cruces, P.; Guzman, P.; Cornejo, R.; Bugedo Tarraza, Guillermo; Brebi, P.; Bruhn, Alejandro
Mobile phone text messaging improves antihypertensive drug adherence in the community
(2017) Varleta, P.; Acevedo B., Mónica; Akel, C.; Salinas, C.; Navarrete, C.; Garcia, A.; Echegoyen, C.; Rodriguez, D.; Gramusset, L.; Leon, S.; Cofre, P.; Retamal, R.; Romero, K.
Monitoring of Chemical Species in Soils, Waters and Plants Near the Active Copper Mine Tailing Dam Ovejeria (Central Chile)
(2024) Tapia, Y.; Garcia, A.; Acuna, E.; Salazar, O.; Casanova, M.; Najera, F.; Kremer, C.; Castillo, B.; Joven, A.; Diaz, O.; Pastene, R.; Antilen, M.; Cornejo, P.; Neaman, A.
Chile, the world's largest copper producer, generates massive amounts of mine tailings that are a source of ongoing environmental concern for local communities. The main objective of this work is to evaluate the concentration of As, Cd, Cr, Cu, Fe, Mn, Mo, Ni, Pb, Zn and SO42- in soils, water and vegetation in the communities surrounding the Cu Ovejeria mine tailings dam, in central Chile. Soils, water and plants samples were collected from the towns of Chacabuco, Huechun, Huertos Familiares, Punta Peuco and Santa Matilde, which are located at 3 to 8 km from the mine tailings site, operated by CODELCO since 1999. The results showed that the levels of metals/metalloids and SO42- in water (pH 6.7-7.9) met both WHO limits and Chilean water quality standards for multiples uses. In soil (pH 7.7-8.4), total and available concentrations of metals/metalloids did not exceed international reference values. Plants with acceptable levels of metals and S were Citrus limon, Eucalyptus, Schinus molle, Prunus persica, Medicago sativa, Citrus sinensis and Ficus carica. The only species with Fe content well above the reference value and with high concentrations of other metals (Cu, Mn, Mo and Pb) was Acacia caven. The concentrations of chemical species determined between 2015 and 2018, in different media and locations near the active Cu tailings dam Ovejeria, in central Chile, allow to conclude that in general the levels are comparable to national and international references and do not indicate contamination.
Nafcillin degradation by heterogeneous electro-Fenton process using Fe, Cu and Fe/Cu nanoparticles
(2020) Campos, S.; Salazar, R.; Arancibia Miranda, N.; Rubio, M. A.; Aranda Bustos, Mario Antonio; Garcia, A.; Sepulveda, P.; Espinoza, L. C.
Nutritional assessment of hospitalized patients in Latin America: association with prognostic variables. The ENHOLA study
(2016) Pineda, J.; Garcia, A.; Velasco Fuentes, Nicolas; Graf, J.; Adames, A.; De La Torre, A.
Recommendations from parents of obese children in treatment to the health-care team: qualitative study
(2017) Garcia, A.; Aspillaga, C.; Cruzat-Mandich, C.; Barja Y., Salesa
Introduction: The family plays an essential role in the adherence and effectiveness in the treatment of childhood obesity. Caregivers’ experience is fundamental for proper guidance. Aim: To describe the recommendations for the health-care team made by parents of children that are being treated for obesity. Patients and Method: Cross-sectional and descriptive study with a qualitative approach and purposeful sampling. In the first semester of 2015, interviews were conducted with nine parents of children from 4 to 10 years old that were being treated for obesity ad who had at least three medical appointments in the previous year. The data analysis was based on the Grounded Theory Approach through open coding. The study was ethically approved and informed parental consent was obtained. Results: The results were grouped in the following main categories: a) Health-care team-caregiver relationship, b) Health-care team-child relationship, c) Encouraging family participation, d) Encouraging therapeutic adherence in the child and e) Frequency of medical appointments. Conclusion: From the perspective of this group of parents of obese children, the health-care team should establish a close therapeutic bond with the children and their parents during the treatment process, in addition to encouraging family participation. The importance of developing therapeutic interventions that consider the perspective of the patient’s system is emphasized.
SOAR/Goodman Spectroscopic Assessment of Candidate Counterparts of the LIGO/Virgo Event GW190814*
(2022) Tucker, D. L.; Wiesner, M. P.; Allam, S. S.; Soares-Santos, M.; Bom, C. R.; Butner, M.; Garcia, A.; Morgan, R.; Olivares E, F.; Palmese, A.; Santana-Silva, L.; Shrivastava, A.; Annis, J.; Garcia-Bellido, J.; Gill, M. S. S.; Herner, K.; Kilpatrick, C. D.; Makler, M.; Sherman, N.; Amara, A.; Lin, H.; Smith, M.; Swann, E.; Arcavi, I; Bachmann, T. G.; Bechtol, K.; Berlfein, F.; Briceno, C.; Brout, D.; Butler, R. E.; Cartier, R.; Casares, J.; Chen, H-Y; Conselice, C.; Contreras, C.; Cook, E.; Cooke, J.; Dage, K.; D'Andrea, C.; Davis, T. M.; de Carvalho, R.; Diehl, H. T.; Dietrich, J. P.; Doctor, Z.; Drlica-Wagner, A.; Drout, M.; Farr, B.; Finley, D. A.; Fishbach, M.; Foley, R. J.; Forster-Buron, F.; Fosalba, P.; Friedel, D.; Frieman, J.; Frohmaier, C.; Gruendl, R. A.; Hartley, W. G.; Hiramatsu, D.; Holz, D. E.; Howell, D. A.; Kawash, A.; Kessler, R.; Kuropatkin, N.; Lahav, O.; Lundgren, A.; Lundquist, M.; Malik, U.; Mann, A. W.; Marriner, J.; Marshall, J. L.; Martinez-Vazquez, C. E.; McCully, C.; Menanteau, F.; Meza, N.; Narayan, G.; Neilsen, E.; Nicolaou, C.; Nichol, R.; Paz-Chinchon, F.; Pereira, M. E. S.; Pineda, J.; Points, S.; Quirola-Vasquez, J.; Rembold, S.; Rest, A.; Rodriguez, O.; Romer, A. K.; Sako, M.; Salim, S.; Scolnic, D.; Smith, J. A.; Strader, J.; Sullivan, M.; Swanson, M. E. C.; Thomas, D.; Valenti, S.; Varga, T. N.; Walker, A. R.; Weller, J.; Wood, M. L.; Yanny, B.; Zenteno, A.; Aguena, M.; Andrade-Oliveira, F.; Bertin, E.; Brooks, D.; Burke, D. L.; Rosell, A. Carnero; Kind, M. Carrasco; Carretero, J.; Costanzi, M.; da Costa, L. N.; De Vicente, J.; Desai, S.; Everett, S.; Ferrero, I; Flaugher, B.; Gaztanaga, E.; Gerdes, D. W.; Gruen, D.; Gschwend, J.; Gutierrez, G.; Hinton, S. R.; Hollowood, D. L.; Honscheid, K.; James, D. J.; Kuehn, K.; Lima, M.; Maia, M. A. G.; Miquel, R.; Ogando, R. L. C.; Pieres, A.; Malagon, A. A. Plazas; Rodriguez-Monroy, M.; Sanchez, E.; Scarpine, V; Schubnell, M.; Serrano, S.; Sevilla-Noarbe, I; Suchyta, E.; Tarle, G.; To, C.; Zhang, Y.
On 2019 August 14 at 21:10:39 UTC, the LIGO/Virgo Collaboration (LVC) detected a possible neutron star-black hole merger (NSBH), the first ever identified. An extensive search for an optical counterpart of this event, designated GW190814, was undertaken using the Dark Energy Camera on the 4 m Victor M. Blanco Telescope at the Cerro Tololo Inter-American Observatory. Target of Opportunity interrupts were issued on eight separate nights to observe 11 candidates using the 4.1 m Southern Astrophysical Research (SOAR) telescope's Goodman High Throughput Spectrograph in order to assess whether any of these transients was likely to be an optical counterpart of the possible NSBH merger. Here, we describe the process of observing with SOAR, the analysis of our spectra, our spectroscopic typing methodology, and our resultant conclusion that none of the candidates corresponded to the gravitational wave merger event but were all instead other transients. Finally, we describe the lessons learned from this effort. Application of these lessons will be critical for a successful community spectroscopic follow-up program for LVC observing run 4 (O4) and beyond.
Technical efficiency and viability of organic dairy sheep farming systems in a traditional area for sheep production in Spain
(2011) Toro-Mujica, P.; Garcia, A.; Gomez-Castro, A. G.; Acero, R.; Perea, J.; Rodriguez-Estevez, V.; Aguilar, C.; Vera, R.
The technical efficiency and viability of organic dairy sheep farming systems were investigated in Castilla-La Mancha, a Spanish region with a tradition of sheep rearing. The thirty one farms sampled, had an average of 359 ha, 508 sheep and 1.9 work units (WU); the reproductive rate was 1.5 lambs per ewe and year and the human productivity reached 303 sheep/Wu. There was however a high degree of variation among farms. Although the average level of technical efficiency was 66%, 74% of farms sampled operated at medium or low rates of technical efficiency. Differences in technical efficiency were largely due to the consumption of feeding supplements and productivity. A total of 45% of the farms was classified as non-viable. It was concluded that strategies for improving competitiveness and the use of resources are specific to each level of efficiency. The most efficient farms must increase their size; moderately efficient farms need to focus their efforts on improving the management of resources to enhance results. Improving competitiveness of the less efficient farms requires an increase of productivity; a better balance between the use of feeding supplements and the sheep productive capacity. (C) 2011 Elsevier B.V. All rights reserved.

Browsing by Author "Garcia, A."

Results Per Page

Sort Options