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15 results on '"Martínez, Micaela"'

1. Acquisition and analysis of crowd-sourced traffic data

Author

Hilpert, Markus, Shearston, Jenni A., Cole, Jemaleddin, Chillrud, Steven N., and Martinez, Micaela E.

Subjects
Computer Science - Social and Information Networks, D.1, J.2, J.3
Abstract

Crowd-sourced traffic data offer great promise in environmental modeling. However, archives of such traffic data are typically not made available for research; instead, the data must be acquired in real time. The objective of this paper is to present methods we developed for acquiring and analyzing time series of real-time crowd-sourced traffic data. We present scripts, which can be run in Unix/Linux like computational environments, to automatically download tiles of crowd-sourced Google traffic congestion maps for a user-specifiable region of interest. Broad and international applicability of our method is demonstrated for Manhattan in New York City and Mexico City. We also demonstrate that Google traffic data can be used to quantify decreases in traffic congestion due to social distancing policies implemented to curb the COVID-19 pandemic in the South Bronx in New York City., Comment: 19 pages, 8 figures, 1 table

Published
2021

4. Different mutation rates in the basal core promoter and precore regions between hepatitis B virus subgenotype F1b clusters.

Author

Martínez, Micaela, Elizalde, María Mercedes, Giadans, Cecilia Graciela, Monzani, Cecilia, Campos, Rodolfo, and Flichman, Diego

Subjects
*HEPATITIS B virus, *PROMOTERS (Genetics), *CHRONIC hepatitis B, *CHRONIC active hepatitis, *HEPATOCELLULAR carcinoma, *VIRAL hepatitis
Abstract

Hepatitis B virus (HBV) is the main etiological agent of hepatocellular carcinoma (HCC) worldwide. It has been classified into nine genotypes and several subgenotypes, with uneven global distribution. There is growing evidence that the viral genotype influences the course and outcome of chronic hepatitis B infection. Two evolutionarily different clusters of the subgenotype F1b, called basal and cosmopolitan, have been described. The two clusters have constrained geographical distribution, with the particular feature that the basal cluster is present in regions of high HCC incidence, while the Cosmopolitan cluster is found in regions of low HCC incidence. The BCP/pC region was sequenced in 68 cases chronically infected with the F1b subgenotype to determine if there was a differential pattern of pathogenic‐associated mutations between both clusters. Twenty‐two of the 68 cases belonged to the subgenotype F1b basal cluster and 46 to the cosmopolitan cluster. Among the HBeAg‐negative patients the A1762T/G1764A and G1896A mutations were more frequently found in the basal samples (85.7 and 92.9%) compared to the cosmopolitan ones (50 and 18.2%). Interestingly, no HBeAg loss‐associated mutations were observed in 7.1 and 36.4% of the basal and cosmopolitan cases, respectively. The different rate of mutations associated with a more severe course of chronic hepatitis in the basal cluster would support the difference in the HCC incidence rate in the geographical regions where the basal cluster is restricted. [ABSTRACT FROM AUTHOR]

Published
2023
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5. Biological Markers to Study the Morphological Modifications Induced by Perinatal Asphyxia

Author

Kolliker-Frers, Rodolfo, primary, Luaces, Juan Pablo, additional, Herrera, Maria Inés, additional, Martínez, Micaela, additional, Bordet, Sofia, additional, Chevallier, Guenson, additional, Kusnier, Carlos, additional, Cao, Gabriel, additional, Udovin, Lucas, additional, Toro-Urrego, Nicolas, additional, Kobiec, Tamara, additional, Ottaviano, Graciela, additional, Pérez-Lloret, Santiago, additional, Losada, Matilde Otero, additional, and Capani, Francisco, additional

Published
2022
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10. Dry matter yield and quality of some mediterranean annual legumes

Author

Otal Salaverri, Julio, Quiles Sotillo, Alberto, Orengo Femenia, Juan, Martínez, Micaela, Ramírez, Antonio, and Facultad de Veterinaria

Subjects
Lathyrus, Vicia sp, Calidad forrajera, 6 - Ciencias aplicadas::63 - Agricultura. Silvicultura. Zootecnia. Caza. Pesca::636 - Veterinaria. Explotación y cría de animales. Cría del ganado y de animales domésticos [CDU], Pisum
Abstract

El objetivo de este estudio fue evaluar la producción y calidad forrajera de variedades locales de algarroba (Vicia monanthos), almorta (Lathyrus sativus), guisante forrajero (Pisum sativum), veza común (Vicia sativa),alverjón (Vicia narbonensis) y yero (Vicia ervilia). El estudio se realizó en tres localidades de la provincia de Albacete, España, durante tres años consecutivos de cultivo. Los muestreos se realizaron en abril, junio y julio y en cada muestra se determinaron los parámetros cualitativos, materia seca (% MS), proteína bruta (% PB),fibra ácido detergente (% FDA), fi bra neutro detergente (% FDN) y energía metabolizable (Mcal) y a partir de ellos la producción (kg MS/ha). En el muestreo de abril la especie de mayor rendimiento (P = 0,05) fue el yero (1.127 kg MS/ha, 20,98% PB y 2,327 Mcal/kg MS) seguido de veza común (924 kg MS/ha, 23,01% PB 2,498 Mcal/kg MS). En el muestro de junio las especies de mayor rendimiento (P = 0,05) fueron vicia común (1.895 kg MS/ha, 20,01% PB y 2,247 Mcal/kg MS) y el yero (1.802 kg MS/ha, 16,12% PB y 2,033 Mcal/kg MS). En julio también fueron el yero (2.880 kg MS/ha, 13.98 % PB y 1,906 Mcal/kg MS) y la veza común (2.777 kg MS/ha, PB 14,97% y 2,043 Mcal/kg MS) las especies de mayor rendimiento (P = 0.05). Nuestros resultados indican que en las condiciones de del estudio el yero y la veza común fueron las especies de más productivas y por tanto de mayor interés como forraje, desde el fi nal del período vegetativo hasta la plena madurez.

Published
2009

12. Microbial colonization in the seagrass Posidonia spp. roots

Author

García-Martínez, Micaela, Kuo, John, Kilminster, Kieryn, Walker, Diana I., Rosselló-Mora, Ramón, Duarte, Carlos M., García-Martínez, Micaela, Kuo, John, Kilminster, Kieryn, Walker, Diana I., Rosselló-Mora, Ramón, and Duarte, Carlos M.

Abstract

The pattern of colonization by microorganisms on root surfaces from three species of seagrass belonging to the genus Posidonia was assessed. Microbial abundance on roots was measured by two electronic microscope techniques. Trends in microbial colonization between species and root order were defined. In addition, eutrophication status of the sampling sites and physiological status of Posidonia oceanica (L.) Delile roots have been taken into account. Our results show high microbial abundance in the Mediterranean species P. oceanica, in comparison with the low rates of colonization found in the Australian species P. australis Hook f. and P. sinuosa Cambridge et Kuo. Microbial density tended to decrease as root order increased, and living roots always showed higher microbial abundance than dead ones. Colonization of P. oceanica roots at the three sites with different environmental status follows different trends according to root order. It is suggested that root age influences the rate of microbial colonization of seagrass roots and that colonization of root surface by microorganisms is associated with organic exudates from the roots rather than with decaying root tissues. © 2005 Taylor & Francis.

Published
2005

15. Enfermedad de Castleman: reporte de un caso.

Author

Bourlon, René, Gallegos, Cecilia, Zárate-Osorno, Alejandra, Carrillo, Jessica, Martínez, Micaela, Vázquez, Pamela, and Candelaria, Myrna

Subjects
CASTLEMAN'S disease, HEMATOLOGIC agents, LYMPHOPROLIFERATIVE disorders, MORTALITY, KIDNEY failure, LYMPHOMAS, KAPOSI'S sarcoma
Abstract

Copyright of Medicina Interna de Mexico is the property of Colegio de Medicina Interna de Mexico 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
2012

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