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5. The Role of the K-loss Coefficients Applied to Finned Tube Heat Exchanger Design.

Author

Canizalez-Dávalos, Lázaro, Murrieta-Luna, Edilberto, Cruz-Delgado, Victor J., Valero-Luna, Claudia Y., and Bañuelos-Frías, Alan

Subjects
HEAT exchangers, PRESSURE drop (Fluid dynamics), PARALLEL electric circuits, FINS (Engineering), WATER distribution
Abstract

This article presents a modified method for designing finned tube heat exchangers based on calculating the K-loss coefficients on the side tube. Besides, a CFD simulation is set up to analyse pressure drop and flow distribution on the staggered tubes. The performance of finned tube heat exchangers depends on several factors, including the number of staggered tubes, tube length, fin pitch, tube pitch, and fin area. Finned tube heat exchangers improve thermal effectiveness, particularly when dealing with gas and liquid fluids. The staggered tube arrangement complicates the prediction of pressure drop on the tube side. Also, two head pipes configure the inlet and outlet flows. The equations for determining pressure drop assume uniform velocity and constant flow distribution throughout the equipment. These correlations do not include the frictional pressure drop caused by the 180° bends welded on the tubes. In addition, equations fail to include the fluid distribution in each parallel circuit of tubes. Considering heat exchanger components as hydraulic resistances in both series and parallel configurations, an equation was developed to sum the K-loss coefficients for the tube bundle, bends, inlet pipe, and outlet pipe. From the hydraulic design results and considering that all tubes distribute water at 93 °C, the next stage consists of the thermal heat exchanger design based on the NTU method to heat air at 50 – 60 ºC. The heat exchanger design is evaluated by comparing the results with an experimental case study. This includes water flow distribution, heat transfer area, hot and cold outlet fluid temperatures, pressure drop and CFD numerical results. [ABSTRACT FROM AUTHOR]

Published
2024
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9. TECHNOLOGY TRANSFER OFFICES AS PROMOTERS OF TECHNOLOGY, INNOVATION AND REGIONAL DEVELOPMENT IN MEXICO/ ESCRITORIOS DE TRANSFERENCIA DE TECNOLOGIA COMO PROMOTORES DE TECNOLOGIA, INOVACAO E DESENVOLVIMENTO REGIONAL NO MEXICO/ OFICINAS DE TRANSFERENCIA DE TECNOLOGIA COMO PROMOTORAS DE TECNOLOGIA, INNOVACION Y DESARROLLO REGIONAL EN MEXICO

Author

Beltran-Morales, Luis Felipe, Almendarez-Hernandez, Marco Antonio, Flores-Delgado, Victor, Trejo-Berumen, Karla Suzeth, Lagunas-Vazques, Magdalena, and Ortega-Rubio, Alfredo

Published
2020
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10. Glycosylation-dependent binding of galectin-8 to activated leukocyte cell adhesion molecule (ALCAM/CD166) promotes its surface segregation on breast cancer cells

Author

Fernández, Marisa M., Ferragut, Fátima, Cárdenas Delgado, Víctor M., Bracalente, Candelaria, Bravo, Alicia I., Cagnoni, Alejandro J., Nuñez, Myriam, Morosi, Luciano G., Quinta, Héctor R., Espelt, María V., Troncoso, María F., Wolfenstein-Todel, Carlota, Mariño, Karina V., Malchiodi, Emilio L., Rabinovich, Gabriel A., and Elola, María T.

Published
2016
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13. High proportion of T-Cell systemic Non-Hodgkin lymphoma in HIV-infected patients in Lima, Peru

Author

Collins, Jaime A., Villena, Juan, Sumire, Julia, Delgado, Victor, Salazar, Raul, Hernandez, Adrian V., and Hidalgo, Jose A.

Subjects
T cells -- Research, Non-Hodgkin's lymphomas -- Genetic aspects, HIV infection -- Drug therapy, Genetic research, Health
Abstract

A report that describes the clinical and pathological characteristics of HIV-related systemic non-Hodgkin lymphoma (sNHL) in developing countries like Lima and Peru is presented. A high proportion of T-cell sNHL cases were found at an HIV reference-center in Peru, though B-cell and T-cell lymphoma patients had similar clinical characteristics, T-cell lymphoma was less aggressive and had a better survival rate than those of B-cell lymphoma.

Published
2005

14. Influence of carbon structures on the properties and photodegradation of LDPE/LLDPE films.

Author

López‐Martínez, Erick Daniel, Martínez‐Colunga, Juan Guillermo, Ramírez‐Vargas, Eduardo, Sanchez‐Valdes, Saul, Ramos ‐de Valle, Luis Francisco, Benavides‐Cantu, Roberto, Rodríguez‐Gonzalez, Jose Alberto, Mata‐Padilla, Jose Manuel, Cruz‐Delgado, Victor Javier, Borjas‐Ramos, Jose Javier, and Da Silva, Luciano

Subjects
LOW density polyethylene, WEATHERING, CARBON films, MOLECULAR weights, PHOTODEGRADATION, FLUORESCENT lamps
Abstract

The effect of different carbon structures on the properties of low density polyethylene film and linear low density polyethylene blends (LDPE/LLDPE) subjected to artificial weathering, was studied. The carbon structures used were carbon black (CB), multi wall carbon nanotubes (MWCNT) and Graphene nanoparticles (GNP), at various loadings: 0.05, 0.1, 0.3, 0.5, 1.0, and 2 wt%. The PE‐Carbon structure composite films were characterized by optical microscopy (MOP), Haze, visible light transmission, UV–visible, thermogravimetric analysis (TGA), melt flow determinations (MFI) and tensile properties. Weathering measurements were evaluated in a QUV panel chamber with UV fluorescent lamps. The films degradation was analyzed following the change in carbonyl index of FTIR spectra, mechanical properties, and molecular weight. A noticeable better dispersion of CB and CNT particles in polyethylene matrix was observed compared with GNP. MWCNTs and CB produced high Haze and low visible light transmission. Thermal stability measured by TGA increased with the presence of GNP and CB. The crystallinity, melting, and crystallinity temperature (Tm and Tc) of the polymers increased with MWCNT and GNP. All the films with carbon structures presented an increase in the modulus of elasticity, with CB giving the highest elastic modulus. Artificial weathering of films with carbon structures showed that CB particles and CNT provided the highest UV protection to polyethylene, with a noticeable increase in low molecular weights and a retention in tensile strength and elongation at break which was reflected in maintaining their flexibility. Films with CNT showed the least significant changes in their properties, being more resistant to photo‐degradation. [ABSTRACT FROM AUTHOR]

Published
2022
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15. Comparing the robustness of tests for stochastic versus deterministic trend in time series.

Author

Silva, Ivair, Silva, Fernanda, and Delgado, Victor

Subjects
*TIME series analysis, *MOVING average process, *GROSS domestic product, *SAMPLE size (Statistics), *HETEROSCEDASTICITY
Abstract

AbstractIn time series analysis, the decision of modeling the trend term as a stochastic or a deterministic component is a primordial step. For decades, authors have been focused on developing statistical tests to guide the analysts in such a decision. Surprisingly, less attention has been given to evaluate the robustness of the methods. This paper compares the robustness of four of the prominent tests. For this, various scenarios were used considering (i) the actual distribution of the noise term, (ii) the sample size, and (iii) the actual time series structure among auto-regressive moving average, linear structural space state, and the exponential generalize auto-regressive conditional heteroskedasticity models. An example of application on the Brazilian Gross Domestic Product is used to discuss the behavior of the methods vis-à-vis to their inferred robustness. [ABSTRACT FROM AUTHOR]

Published
2025
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17. Focus on echovascular imaging assessment of arterial disease: complement to the ESC guidelines (PARTIM 1) in collaboration with the Working Group on Aorta and Peripheral Vascular Diseases

Author

Sprynger, Muriel, Rigo, Fausto, Moonen, Marie, Aboyans, Victor, Edvardsen, Thor, de Alcantara, Monica, Brodmann, Marianne, Naka, Katerina, Kownator, Serge, Simova, Iana, Vlachopoulos, Charalambos, Wautrecht, Jean-Claude, Lancellotti, Patrizio, Delgado, Victor, Dulgheru, Raluca, Haugaa, Kristina, Flachskampf, Frank, Gimelli, Alessia, Gerber, Bernhard, Cardim, Nuno, Cosyns, Bernard, Muraru, Denisa, Masci, Pier Giorgio, Galderisi, Maurizio, Centre Hospitalier Universitaire de Liège (CHU-Liège), Service de Chirurgie Thoracique et Vasculaire - Médecine vasculaire [CHU Limoges], CHU Limoges, Neuroépidémiologie Tropicale (NET), CHU Limoges-Institut d'Epidémiologie Neurologique et de Neurologie Tropicale-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut Génomique, Environnement, Immunité, Santé, Thérapeutique (GEIST), Université de Limoges (UNILIM)-Université de Limoges (UNILIM), Oslo University Hospital [Oslo], Department of Internal Medicine, Medizinische Universität Graz, Michaelid Cardiac Ctr, University of Ioannina, Groupe Interdisciplinaire de Génoprotéomique Appliquée (GIGA-Research), Université de Liège, Uppsala University, Institut de Recherche Expérimentale et Clinique (IREC), Université Catholique de Louvain = Catholic University of Louvain (UCL), Hospital da Luz, Universita degli Studi di Padova, and Università degli studi di Napoli Federico II

Subjects
cardiovascular system, [SDV.SPEE]Life Sciences [q-bio]/Santé publique et épidémiologie, cardiovascular diseases
Abstract

International audience; The main goal of the present document is to provide a set of practical recommendations for ultrasound imagers who are interested in artery diseases or for physicians who intend to undertake vascular procedures. This is the first part of the work. It is dedicated to general principles of ultrasonography, cervicoencephalic, subclavian, aortoiliac and lower extremity arteries, abdominal aorta, and popliteal aneurysms. It also discusses miscellaneous items such as medial arterial calcinosis, arterial embolism, arteritis, arterial stents and bypasses, false aneurysms, aortic dissection, popliteal entrapment syndrome, and iliac endofibrosis.

Published
2018

18. Measure of gap and inequalities in basic education students proficiencies

Author

Soares, Jos�� Francisco, Rodrigues, Erica Castilho, and Delgado, Victor Maia Senna

Subjects
FOS: Computer and information sciences, Applications (stat.AP), Statistics - Applications
Abstract

This study uses students performance on standardized tests as evidence of the quality of education and introduces a methodology based on the comparison of performance distributions to produce indicators for both the level achieved by the students and the learning gap between social groups, two inseparable dimensions of quality of education. In the first case, the study compares the distribution of the group observed with a reference distribution, which represents an ideal situation of where students should be. In the second, it compares the performance distribution of students belonging to social groups defined by socioeconomic characteristics. This article uses the Kullback-Leibler divergence to characterize the differences between the distributions. This measure takes into account types of diferences not considered by other measures and have solid conceptual justifications. The proposed methodology is used to describe the quality of Brazilian basic education using the test results applied biannually to all Brazilian students of basic education.

Published
2018

19. Questions and Answers on Diagnosis and Management of Patients with Peripheral Arterial Diseases: A Companion Document of the 2017 ESC Guidelines for the Diagnosis and Treatment of Peripheral Arterial Diseases, in collaboration with the European Society for Vascular Surgery (ESVS)

Author

Björck, Martin, Brodmann, Marianne, Czerny, Martin, De Carlo, Marco, Naylor, A. Ross, Tendera, Michal, Vlachopoulos, Charalambos, Ricco, Jean-Baptiste, Widimsky, Petr, Kolh, Philippe, Dick, Florian, de Ceniga, Melina Vega, Sievert, Horst, Sulzenko, Jakub, Windecker, Stephan, Aboyans, Victor, Agewall, Stefan, Barbato, Emanuele, Bueno, Hector, Coca, Antonio, Collet, Jean-Philippe, Coman, Ioan Mircea, Dean, Veronica, Delgado, Victor, Fitzsimons, Donna, Gaemperli, Oliver, Hindricks, Gerhard, Iung, Bernard, Jüni, Peter, Katus, Hugo, Knuuti, Juhani, Lancellotti, Patrizio, Leclercq, Christophe, Mcdonagh, Theresa, Piepoli, Massimo Francesco, Ponikowski, Piotr, Richter, Dimitrios, Roffi, Marco, Shlyakhto, Evgeny, Simpson, Iain, Zamorano, Jose Luis, Department of Internal Medicine, Medizinische Universität Graz, Third Division of Cardiology, Medical University of Silesia, Service de Chirurgie Thoracique et Vasculaire - Médecine vasculaire [CHU Limoges], CHU Limoges, Neuroépidémiologie Tropicale (NET), CHU Limoges-Institut d'Epidémiologie Neurologique et de Neurologie Tropicale-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut Génomique, Environnement, Immunité, Santé, Thérapeutique (GEIST), Université de Limoges (UNILIM)-Université de Limoges (UNILIM), Karolinska Institute, karolinska institute, 'Federico II' University of Naples Medical School, Hospital General Universitario 'Gregorio Marañón' [Madrid], Unité de Recherche sur les Maladies Cardiovasculaires, du Métabolisme et de la Nutrition = Institute of cardiometabolism and nutrition (ICAN), Université Pierre et Marie Curie - Paris 6 (UPMC)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Institut National de la Santé et de la Recherche Médicale (INSERM)-CHU Pitié-Salpêtrière [AP-HP], Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), CHU de Montpellier, Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), St. Michael's Hospital, Heidelberg University Hospital [Heidelberg], Turku PET Centre, University of Turku, Wroclaw Medical University, Universidad de Alcalá - University of Alcalá (UAH), Medical University of Silesia (SUM), Institut Génomique, Environnement, Immunité, Santé, Thérapeutique (GEIST), Université de Limoges (UNILIM)-Université de Limoges (UNILIM)-CHU Limoges-Institut d'Epidémiologie Neurologique et de Neurologie Tropicale-Institut National de la Santé et de la Recherche Médicale (INSERM), and Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Sorbonne Université (SU)

Subjects
[SDV.SPEE]Life Sciences [q-bio]/Santé publique et épidémiologie, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2018

20. Editor's Choice – 2017 ESC Guidelines on the Diagnosis and Treatment of Peripheral Arterial Diseases, in collaboration with the European Society for Vascular Surgery (ESVS)

Author

Aboyans, Victor, Ricco, Jean-Baptiste, Bartelink, Marie-Louise E.L., Björck, Martin, Brodmann, Marianne, Cohnert, Tina, Collet, Jean-Philippe, Czerny, Martin, De Carlo, Marco, Debus, Sebastian, Espinola-Klein, Christine, Kahan, Thomas, Kownator, Serge, Mazzolai, Lucia, Naylor, A. Ross, Roffi, Marco, Röther, Joachim, Sprynger, Muriel, Tendera, Michal, Tepe, Gunnar, Venermo, Maarit, Vlachopoulos, Charalambos, Desormais, Iléana, Widimsky, Petr, Kolh, Philippe, Agewall, Stefan, Bueno, Hector, Coca, Antonio, De Borst, Gert, Delgado, Victor, Dick, Florian, Erol, Cetin, Ferrini, Marc, Kakkos, Stavros, Katus, Hugo, Knuuti, Juhani, Lindholt, Jes, Mattle, Heinrich, Pieniazek, Piotr, Piepoli, Massimo Francesco, Scheinert, Dierk, Sievert, Horst, Simpson, Iain, Sulzenko, Jakub, Tamargo, Juan, Tokgözoglu, Lale, Torbicki, Adam, Tsakountakis, Nikolaos, Tuñón, José, de Ceniga, Melina Vega, Windecker, Stephan, Zamorano, Jose Luis, Service de Chirurgie Thoracique et Vasculaire - Médecine vasculaire [CHU Limoges], CHU Limoges, Neuroépidémiologie Tropicale (NET), Institut Génomique, Environnement, Immunité, Santé, Thérapeutique (GEIST), Université de Limoges (UNILIM)-Université de Limoges (UNILIM)-CHU Limoges-Institut d'Epidémiologie Neurologique et de Neurologie Tropicale-Institut National de la Santé et de la Recherche Médicale (INSERM), Service de cardiologie [CHU de Poitiers], Centre hospitalier universitaire de Poitiers (CHU Poitiers), Department of Internal Medicine, Medizinische Universität Graz, Institut de cardiologie [CHU Pitié-Salpêtrière], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Sorbonne Université (SU), Department of Clinical Sciences, Danderyd Hospital, Karolinska Institutet [Stockholm], Department of Neurology, Asklepios Klinik Altona, Centre Hospitalier Universitaire de Liège (CHU-Liège), Third Division of Cardiology, Medical University of Silesia (SUM), Karolinska Institute, karolinska institute, Hospital General Universitario 'Gregorio Marañón' [Madrid], Heidelberg University Hospital [Heidelberg], Turku PET Centre, University of Turku, Universidad Complutense de Madrid = Complutense University of Madrid [Madrid] (UCM), Hacettepe University = Hacettepe Üniversitesi, Universidad de Alcalá - University of Alcalá (UAH), CHU Limoges-Institut d'Epidémiologie Neurologique et de Neurologie Tropicale-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut Génomique, Environnement, Immunité, Santé, Thérapeutique (GEIST), Université de Limoges (UNILIM)-Université de Limoges (UNILIM), Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), and Medical University of Silesia

Subjects
[SDV.SPEE]Life Sciences [q-bio]/Santé publique et épidémiologie, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2018

21. Questions and answers on diagnosis and management of patients with Peripheral Arterial Diseases: a companion document of the 2017 ESC Guidelines for the Diagnosis and Treatment of Peripheral Arterial Diseases, in collaboration with the European Society for Vascular Surgery (ESVS)

Author

Aboyans, Victor, Björck, Martin, Brodmann, Marianne, Collet, Jean-Philippe, Czerny, Martin, De Carlo, Marco, Naylor, A Ross, Roffi, Marco, Tendera, Michal, Vlachopoulos, Charalambos, Ricco, Jean-Baptiste, Widimsky, Petr, Kolh, Philippe, Dick, Florian, de Ceniga, Melina Vega, Sievert, Horst, Sulzenko, Jakub, Windecker, Stephan, Agewall, Stefan, Barbato, Emanuele, Bueno, Hector, Coca, Antonio, Coman, Ioan Mircea, Dean, Veronica, Delgado, Victor, Fitzsimons, Donna, Gaemperli, Oliver, Hindricks, Gerhard, Iung, Bernard, Jüni, Peter, Katus, Hugo, Knuuti, Juhani, Lancellotti, Patrizio, Leclercq, Christophe, Mcdonagh, Theresa, Piepoli, Massimo Francesco, Ponikowski, Piotr, Richter, Dimitrios, Shlyakhto, Evgeny, Simpson, Iain, Zamorano, Jose Luis, Bartelink, Marie-Louise EL, Cohnert, Tina, Debus, Sebastian, Espinola-Klein, Christine, Kahan, Thomas, Kownator, Serge, Mazzolai, Lucia, Röther, Joachim, Sprynger, Muriel, Tepe, Gunnar, Venermo, Maarit, Desormais, Iléana, Service de Chirurgie Thoracique et Vasculaire - Médecine vasculaire [CHU Limoges], CHU Limoges, Neuroépidémiologie Tropicale (NET), Institut Génomique, Environnement, Immunité, Santé, Thérapeutique (GEIST), Université de Limoges (UNILIM)-Université de Limoges (UNILIM)-CHU Limoges-Institut d'Epidémiologie Neurologique et de Neurologie Tropicale-Institut National de la Santé et de la Recherche Médicale (INSERM), Department of Internal Medicine, Medizinische Universität Graz, Institut de cardiologie [CHU Pitié-Salpêtrière], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Sorbonne Université (SU), Third Division of Cardiology, Medical University of Silesia (SUM), Service de cardiologie [CHU de Poitiers], Centre hospitalier universitaire de Poitiers (CHU Poitiers), Karolinska Institute, karolinska institute, 'Federico II' University of Naples Medical School, Hospital General Universitario 'Gregorio Marañón' [Madrid], CHU de Montpellier, Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), St. Michael's Hospital, Heidelberg University Hospital [Heidelberg], Turku PET Centre, University of Turku, Wroclaw Medical University, Universidad de Alcalá - University of Alcalá (UAH), Department of Clinical Sciences, Danderyd Hospital, Karolinska Institutet [Stockholm], Centre Hospitalier Universitaire de Liège (CHU-Liège), CHU Limoges-Institut d'Epidémiologie Neurologique et de Neurologie Tropicale-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut Génomique, Environnement, Immunité, Santé, Thérapeutique (GEIST), Université de Limoges (UNILIM)-Université de Limoges (UNILIM), Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), and Medical University of Silesia

Subjects
Aged, 80 and over, Male, Arterial Occlusive Diseases, Coronary Artery Disease, Intermittent Claudication, Middle Aged, 030204 cardiovascular system & hematology, ta3121, Atherosclerosis, 3. Good health, Peripheral Arterial Disease, 03 medical and health sciences, 0302 clinical medicine, Practice Guidelines as Topic, Vertebrobasilar Insufficiency, Humans, Female, [SDV.SPEE]Life Sciences [q-bio]/Santé publique et épidémiologie, Cardiology and Cardiovascular Medicine, Diabetic Angiopathies, 030217 neurology & neurosurgery, ComputingMilieux_MISCELLANEOUS, Aged
Abstract

International audience

Published
2018
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22. 2017 ESC Guidelines on the Diagnosis and Treatment of Peripheral Arterial Diseases, in collaboration with the European Society for Vascular Surgery (ESVS)

Author

Ricco, Jean-Baptiste, Bartelink, Marie-Louise, Björck, Martin, Brodmann, Marianne, Cohnert, Tina, Czerny, Martin, De Carlo, Marco, Debus, Sebastian, Espinola-Klein, Christine, Kahan, Thomas, Kownator, Serge, Mazzolai, Lucia, Naylor, A Ross, Röther, Joachim, Sprynger, Muriel, Tendera, Michal, Tepe, Gunnar, Venermo, Maarit, Vlachopoulos, Charalambos, Desormais, Iléana, Widimsky, Petr, Kolh, Philippe, De Borst, Gert, Dick, Florian, Erol, Cetin, Ferrini, Marc, Kakkos, Stavros, Lindholt, Jes, Mattle, Heinrich, Pieniazek, Piotr, Scheinert, Dierk, Sievert, Horst, Sulzenko, Jakub, Tamargo, Juan, Tokgözoglu, Lale, Torbicki, Adam, Tsakountakis, Nikolaos, Tuñón, José, de Ceniga, Melina Vega, Windecker, Stephan, Aboyans, Victor, Agewall, Stefan, Barbato, Emanuele, Bueno, Hector, Coca, Antonio, Collet, Jean-Philippe, Coman, Ioan Mircea, Dean, Veronica, Delgado, Victor, Fitzsimons, Donna, Gaemperli, Oliver, Hindricks, Gerhard, Iung, Bernard, Jüni, Peter, Katus, Hugo, Knuuti, Juhani, Lancellotti, Patrizio, Leclercq, Christophe, Mcdonagh, Theresa, Piepoli, Massimo Francesco, Ponikowski, Piotr, Richter, Dimitrios, Roffi, Marco, Shlyakhto, Evgeny, Simpson, Iain, Zamorano, Jose Luis, Zelveian, Parounak, Haumer, Markus, Isachkin, Dzmitry, De Backer, Tine, Dilic, Mirza, Petrov, Petr, Kirhmajer, Majda Vrkic, Karetova, Debora, Prescott, Eva, Soliman, Hamdy, Paapstel, Ants, Makinen, Kimmo, Tosev, Slavco, Messas, Emmanuel, Pagava, Zurab, Müller, Oliver, Naka, Katerina, Járai, Zoltán, Gudjonsson, Thorbjorn, Jonas, Michael, Novo, Salvatore, Ibrahimi, Pranvera, Lunegova, Olga, Dzerve, Vilnis, Misonis, Nerijus, Beissel, Jean, Pllaha, Elton, Taberkant, Mustapha, Bakken, Torbjørn, Teles, Rui, Lighezan, Daniel, Konradi, Alexandra, Zavatta, Marco, Madaric, Juraj, Fras, Zlatko, Melchor, Lorenzo Silva, Näslund, Ulf, Amann-Vesti, Beatrice, Obiekezie, Agu, Service de cardiologie [CHU de Poitiers], Centre hospitalier universitaire de Poitiers (CHU Poitiers), Julius Centre for Health Sciences and Primary Health Care, Department of Internal Medicine, Medizinische Universität Graz, Department of Clinical Sciences, Danderyd Hospital, Karolinska Institutet [Stockholm], Department of Neurology, Asklepios Klinik Altona, Centre Hospitalier Universitaire de Liège (CHU-Liège), Third Division of Cardiology, Medical University of Silesia (SUM), Service de Chirurgie Thoracique et Vasculaire - Médecine vasculaire [CHU Limoges], CHU Limoges, Neuroépidémiologie Tropicale (NET), Institut Génomique, Environnement, Immunité, Santé, Thérapeutique (GEIST), Université de Limoges (UNILIM)-Université de Limoges (UNILIM)-CHU Limoges-Institut d'Epidémiologie Neurologique et de Neurologie Tropicale-Institut National de la Santé et de la Recherche Médicale (INSERM), Hacettepe University = Hacettepe Üniversitesi, Karolinska Institute, karolinska institute, 'Federico II' University of Naples Medical School, Hospital General Universitario 'Gregorio Marañón' [Madrid], Institut de cardiologie [CHU Pitié-Salpêtrière], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Sorbonne Université (SU), CHU de Montpellier, Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), St. Michael's Hospital, Heidelberg University Hospital [Heidelberg], Turku PET Centre, University of Turku, Wroclaw Medical University, Universidad de Alcalá - University of Alcalá (UAH), Paris-Centre de Recherche Cardiovasculaire (PARCC - UMR-S U970), Université Paris Descartes - Paris 5 (UPD5)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Hôpital Européen Georges Pompidou [APHP] (HEGP), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpitaux Universitaires Paris Ouest - Hôpitaux Universitaires Île de France Ouest (HUPO)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpitaux Universitaires Paris Ouest - Hôpitaux Universitaires Île de France Ouest (HUPO), Michaelid Cardiac Ctr, University of Ioannina, Medical University of Silesia, Assistance publique - Hôpitaux de Paris (AP-HP) (APHP)-CHU Pitié-Salpêtrière [APHP], Université Paris Descartes - Paris 5 (UPD5)-Hôpital Européen Georges Pompidou [APHP] (HEGP), Assistance publique - Hôpitaux de Paris (AP-HP) (APHP)-Hôpitaux Universitaires Paris Ouest - Hôpitaux Universitaires Île de France Ouest (HUPO)-Assistance publique - Hôpitaux de Paris (AP-HP) (APHP)-Hôpitaux Universitaires Paris Ouest - Hôpitaux Universitaires Île de France Ouest (HUPO)-Institut National de la Santé et de la Recherche Médicale (INSERM), CHU Limoges-Institut d'Epidémiologie Neurologique et de Neurologie Tropicale-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut Génomique, Environnement, Immunité, Santé, Thérapeutique (GEIST), Université de Limoges (UNILIM)-Université de Limoges (UNILIM), Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Hôpital Européen Georges Pompidou [APHP] (HEGP), and Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpitaux Universitaires Paris Ouest - Hôpitaux Universitaires Île de France Ouest (HUPO)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpitaux Universitaires Paris Ouest - Hôpitaux Universitaires Île de France Ouest (HUPO)-Université Paris Descartes - Paris 5 (UPD5)-Institut National de la Santé et de la Recherche Médicale (INSERM)

Subjects
[SDV.SPEE]Life Sciences [q-bio]/Santé publique et épidémiologie, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2018

25. Preparation and Characterization of Electrically Conductive Polymer Nanocomposites with Different Carbon Nanoparticles

Author

Cruz-Delgado, Victor J., Mata-Padilla, José Manuel, Martínez-Colunga, Juan Guillermo, Ávila-Orta, Carlos A., and Valdéz-Garza, Janett Anaid

Subjects
Technology & Engineering / Nanotechnology & Mems
Abstract

Carbon nanoparticles possess a combination of high electrical and thermal transport properties, as well as low density and different morphologies that make them a good choice to reinforce plastics. Polymer nanocomposites offer great expectations for new and unexpected applications due to the possibility of changing their electrical/thermal behavior by adding nanoparticles while retaining the flexibility and processability of plastics. The possibility of electrical and thermal conduction in a polymer matrix with low amounts of nanoparticles brings opportunity for high demanding applications such as electrical conductors, heat exchangers, sensors, and actuators. Polyolefin nanocomposites offer a significant challenge due to their insulative nature and low affinity for carbon nanoparticles; due to the latter, new production tendencies are proposed and investigated.

Published
2018

26. The effects of a place-based tax cut and minimum wage increase on labor market outcomes.

Author

Campos-Vazquez, Raymundo M., Delgado, Victor, and Rodas, Alexis

Subjects
*MINIMUM wage, *WAGE increases, *WAGE decreases, *TAX cuts, *LABOR market, *COST of living
Abstract

The benefits of place-based policies are still under debate. In this study, we analyze what is probably one of the boldest interventions in the recent history of Mexico and the rest of the world: the Northern Border Free Zone (NBFZ). Launched in January 2019, this program doubles the minimum wage and substantially lowers taxes in 43 municipalities along the border with the United States, aiming to improve living standards for low-wage workers and foster economic activity within the region. Given the unique features of the NBFZ, we estimate its short-run effects on labor outcomes: employment, wages, and formality. Our primary identification strategy follows a synthetic control method employing monthly administrative data at the municipality level for the period 2015–2019. Using administrative data for formal employment, we find that the policy substantially increased labor income in the NBFZ by approximately 9% over the control municipalities. The results for employment are less clear. Formal employment showed 1.6% less growth in the NBFZ than in the control municipalities, but the estimate is imprecise and we cannot reject a null impact of the program on employment. These results are robust to alternative control groups, including metropolitan areas in the United States. We also use the labor force survey to estimate the effects on formality at the individual level and find results closer to a null effect. These two results suggest that the NBFZ did not substantially affect employment, and the intersection of confidence intervals for the two estimates implies a maximum loss of employment of approximately 24,000 jobs. [ABSTRACT FROM AUTHOR]

Published
2021
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28. Mathematical modeling approach to the fractional Bergman's model.

Author

Morales-Delgado, Victor Fabian, Gómez-Aguilar, José Francisco, and Taneco-Hernández, Marco Antonio

Subjects
MATHEMATICAL models, ANALYTICAL solutions, COMPUTER simulation, BLOOD sugar
Abstract

This paper presents the solution for a fractional Bergman's minimal blood glucose-insulin model expressed by Atangana-Baleanu-Caputo fractional order derivative and fractional conformable derivative in Liouville-Caputo sense. Applying homotopy analysis method and Laplace transform with homotopy polynomial we obtain analytical approximate solutions for both derivatives. Finally, some numerical simulations are carried out for illustrating the results obtained. In addition, the calculations involved in the modified homotopy analysis transform method are simple and straightforward. [ABSTRACT FROM AUTHOR]

Published
2020
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30. On the Farm: My Internship at Hopkins Southdowns

Author

Delgado, Victor

Subjects
School lunches -- Personal narratives, School lunchrooms, cafeterias, etc. -- Personal narratives, Internship programs -- Personal narratives, News, opinion and commentary, Sports and fitness
Abstract

Byline: Victor Delgado I am originally from El Paso, Texas, but relocated to Fort Lauderdale, Florida, just before I started high school. Initially I attended JWU North Miami for my [...]

Published
2018

32. Glycosylation-dependent binding of galectin-8 to activated leukocyte cell adhesion molecule (ALCAM/CD166) promotes its surface segregation on breast cancer cells

Author

Fernández, Marisa Mariel, Ferragut, Fátima, Cardenas Delgado, Victor Manuel, Bracalente, María Candelaria, Bravo, Alicia Ines, Cagnoni, Alejandro, Nuñez, Myriam Carmen, Morosi, Luciano Gastón, Quintá, Héctor Ramiro, Espelt, Maria Victoria, Troncoso, María Fernanda, Wolfenstein, Carlota Elisa, Mariño, Karina Valeria, Malchiodi, Emilio Luis, Rabinovich, Gabriel Adrián, and Elola, Maria Teresa

Subjects
Ciencias Biológicas, Biología Celular, Microbiología, Breast Cancer Cell, Receptor Segregation, Alcam/Cd166, Bioquímica y Biología Molecular, Galectin-8, CIENCIAS NATURALES Y EXACTAS
Abstract

We previously demonstrated that the activated leukocyte cell adhesion molecule (ALCAM/CD166) can interact with galectin-8 (Gal-8) in endothelial cells. ALCAM is a member of the immunoglobulin superfamily that promotes homophilic and heterophilic cell-cell interactions. Gal-8 is a "tandem-repeat"-type galectin, known as a matricellular protein involved in cell adhesion. Here, we analyzed the physical interaction between both molecules in breast cancer cells and the functional relevance of this phenomenon. Fil: Fernández, Marisa Mariel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Estudios de la Inmunidad Humoral Prof. Ricardo A. Margni. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Estudios de la Inmunidad Humoral Prof. Ricardo A. Margni; Argentina Fil: Ferragut, Fátima. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Química y Físico-Química Biológicas "Prof. Alejandro C. Paladini". Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Química y Físico-Química Biológicas; Argentina Fil: Cardenas Delgado, Victor Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Química y Físico-Química Biológicas "Prof. Alejandro C. Paladini". Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Química y Físico-Química Biológicas; Argentina Fil: Bracalente, María Candelaria. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Química y Físico-Química Biológicas "Prof. Alejandro C. Paladini". Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Química y Físico-Química Biológicas; Argentina Fil: Bravo, Alicia I.. Provincia de Buenos Aires. Ministerio de Salud. Hospital Interzonal de Agudos "Eva Perón"; Argentina Fil: Cagnoni, Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental. Fundación de Instituto de Biología y Medicina Experimental. Instituto de Biología y Medicina Experimental; Argentina Fil: Nuñez, Myriam. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica; Argentina Fil: Morosi, Luciano Gastón. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental. Fundación de Instituto de Biología y Medicina Experimental. Instituto de Biología y Medicina Experimental; Argentina Fil: Quintá, Héctor Ramiro. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Química y Físico-Química Biológicas "Prof. Alejandro C. Paladini". Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Química y Físico-Química Biológicas; Argentina Fil: Espelt, Maria Victoria. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Química y Físico-Química Biológicas "Prof. Alejandro C. Paladini". Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Química y Físico-Química Biológicas; Argentina Fil: Troncoso, María Fernanda. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Química y Físico-Química Biológicas "Prof. Alejandro C. Paladini". Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Química y Físico-Química Biológicas; Argentina Fil: Wolfenstein, Carlota Elisa. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Química y Físico-Química Biológicas "Prof. Alejandro C. Paladini". Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Química y Físico-Química Biológicas; Argentina Fil: Mariño, Karina Valeria. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental. Fundación de Instituto de Biología y Medicina Experimental. Instituto de Biología y Medicina Experimental; Argentina Fil: Malchiodi, Emilio Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Estudios de la Inmunidad Humoral Prof. Ricardo A. Margni. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Estudios de la Inmunidad Humoral Prof. Ricardo A. Margni; Argentina Fil: Rabinovich, Gabriel Adrián. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental. Fundación de Instituto de Biología y Medicina Experimental. Instituto de Biología y Medicina Experimental; Argentina Fil: Elola, Maria Teresa. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Química y Físico-Química Biológicas "Prof. Alejandro C. Paladini". Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Química y Físico-Química Biológicas; Argentina

Published
2016

33. Application of the Caputo‐Fabrizio and Atangana‐Baleanu fractional derivatives to mathematical model of cancer chemotherapy effect.

Author

Morales‐Delgado, Victor Fabian, Gómez‐Aguilar, José Francisco, Saad, Khaled, and Escobar Jiménez, Ricardo Fabricio

Subjects
*CAPUTO fractional derivatives, *FRACTIONAL calculus, *CANCER chemotherapy, *CANCER treatment, *HOMOTOPY theory, *LAPLACE transformation, *PERTURBATION theory
Abstract

In this paper, we obtain approximate‐analytical solutions of a cancer chemotherapy effect model involving fractional derivatives with exponential kernel and with general Mittag‐Leffler function. Laplace homotopy perturbation method and the modified homotopy analysis transform method were applied. The first method is based on a combination of the Laplace transform and homotopy methods, while the second method is an analytical technique based on homotopy polynomial. The cancer chemotherapy effect equations are solved numerically and analytically using the aforesaid methods. Illustrative examples are included to demonstrate the validity and applicability of the presented technique with new fractional‐order derivatives with exponential decay law and with general Mittag‐Leffler law. [ABSTRACT FROM AUTHOR]

Published
2019
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34. Expression, localization and function of galectin-8, a tandemrepeat lectin, in human tumors

Author

Elola, Maria Teresa, Ferragut, Fatima Eneida del Valle, Cardenas Delgado, Victor Manuel, Nugnes, Lorena Gisela, Gentilini, Lucas Daniel, Laderach, Diego Jose, Troncoso, María Fernanda, Compagno, Daniel Georges, Wolfenstein, Carlota Elisa, and Rabinovich, Gabriel Adrian

Subjects
Medicina Básica, CIENCIAS MÉDICAS Y DE LA SALUD, TUMOR, GALECTIN-8, PROSTATE, ISOFORMS, Bioquímica y Biología Molecular, LUNGS
Abstract

Galectin-8 (Gal-8) is a ´tandem-repeat´-type galectin, which possesses two carbohydrate recognition domains connected by a linker peptide. Gal-8 complexity is related to the alternative splicing of its mRNA precursor, which is known to generate isoforms. Regarding its carbohydrate-binding specificity, Gal-8 has a unique feature among galectins, since its C-terminal domain has higher affinity for N-glycan-type branched oligosaccharides, while its N-terminal domain shows strong affinity for α2-3-sialylated or 3´-sulfated β-galactosides. We integrate here the available information on Gal-8 expression in different tumor types and attempt to elucidate associations of its expression and localization with tumor progression with the overarching goal of analyzing its potential applications in diagnosis and prognosis. Differential diagnosis is still a prime concern in tumor pathology, and Gal-8 could be of great value in some types of primary or secondary tumors (i.e. papillary thyroid carcinoma, advanced colon carcinoma from patients with distant metastases, or metastases from primary lung carcinoma). The prognostic value of Gal-8 has been described for laryngeal carcinoma as well as advanced colon carcinoma. Further studies are needed to explain the relevance of Gal-8 and its isoforms in tumor pathology and their different intra- or extracellular roles (cytoplasmic, nuclear or extracellular) in tumor biology. Fil: Elola, Maria Teresa. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Química y Fisicoquímica Biológicas; Argentina Fil: Ferragut, Fatima Eneida del Valle. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Química y Fisicoquímica Biológicas; Argentina Fil: Cardenas Delgado, Victor Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Química y Fisicoquímica Biológicas; Argentina Fil: Nugnes, Lorena Gisela. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Química y Fisicoquímica Biológicas; Argentina Fil: Gentilini, Lucas Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales; Argentina Fil: Laderach, Diego Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales; Argentina Fil: Troncoso, María Fernanda. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Química y Fisicoquímica Biológicas; Argentina Fil: Compagno, Daniel Georges. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales; Argentina Fil: Wolfenstein, Carlota Elisa. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Química y Fisicoquímica Biológicas; Argentina Fil: Rabinovich, Gabriel Adrian. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental (i); Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales; Argentina

Published
2014

35. Fractional operator without singular kernel: Applications to linear electrical circuits.

Author

Morales‐Delgado, Victor F., Gómez‐Aguilar, José F., Taneco‐Hernández, Marco A., and Escobar‐Jiménez, Ricardo F.

Subjects
*KERNEL functions, *LINEAR differential equations, *FRACTIONAL calculus, *ELECTRIC circuits, *DIGITAL image processing
Abstract

Summary: This paper presents the analytical solutions of fractional linear electrical systems by using the Caputo‐Fabrizio fractional‐order operator in Liouville‐Caputo sense. This novel operator involves an exponential kernel without singularities. The fractional equations were solved analytically by using the properties of Laplace transform operator, as well as the convolution theorem. To validate the analytical solutions, numerical simulations were carried out. This paper presents the analytical solutions of fractional linear electrical systems by using the Caputo‐Fabrizio fractional‐order operator in Liouville‐Caputo sense. This novel operator involves an exponential kernel without singularities. The fractional equations were solved analytically by using the properties of Laplace transform operator, as well as the convolution theorem. To validate the analytical solutions, numerical simulations were carried out. [ABSTRACT FROM AUTHOR]

Published
2018
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36. Surface Modification of Graphene Nanoparticles With Ethylene Plasma in Rotary Plasma Reactor for the Preparation of GnP/HDPE Nanocomposites.

Author

Zendejo-Covarrubias, Raymundo, Narro-Cespedes, Rosa Idalia, Neira-Velazquez, Guadalupe, Cruz-Delgado, Victor J., Ku-Herrera, J. J., Borjas-Ramos, Javier, Arias-Garcia, Graciela, and Soria-Arguello, Gustavo

Subjects
GRAPHENE, NANOPARTICLES, ETHYLENE, PLASMA gases, TRANSMISSION electron microscopy
Abstract

Graphene nanoparticles (GnPs) were modified by ethylene plasma in order to improve their compatibility with high-density polyethylene (HDPE). The role of the plasma-based surface modification on the mechanical and electrical properties of GnP/HDPE was also investigated. The surface modification of GnPs was conducted using an in-house constructed rotary plasma reactor excited by a high-voltage power source. Morphology of the GnPs before and after plasma treatment was observed by scanning electron microscopy and transmission electron microscopy. In general, GnP/HDPE composites made with GnPs treated by ethylene plasma exhibit the highest mechanical and electrical improvements. Polyethylene decreases its electrical resistivity up 6 orders of magnitude and increases its elastic modulus by ~40% with the addition of 8 wt% of GnPs treated with ethylene plasma. [ABSTRACT FROM AUTHOR]

Published
2018
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37. Renal damage induced by the pesticide methyl parathion in male Wistar rats.

Author

Fuentes-Delgado, Victor Hugo, Martínez-Saldaña, María Consolación, Rodríguez-Vázquez, María Luisa, Reyes-Romero, Miguel Arturo, Reyes-Sánchez, José Luis, and Jaramillo-Juárez, Fernando

Subjects
*LABORATORY rats, *KIDNEY diseases, *METHYL parathion
Abstract

Little information is apparently available regarding the nephrotoxic effects induced by pesticides. The aim of this study was to examine the influence of low doses of methyl parathion (MP) on the structure and function of the kidney of male Wistar rats. A corn oil (vehicle) was administered to control rats, whereas treated rats received MP at 0.56 mg/kg orally (1/25 of LD50), every third day, for 8 weeks. At the end of each week following MP exposure, creatinine and glucose levels were measured in plasma, while glucose, inorganic phosphate, total proteins, albumin, and activity of γ-glutamyltranspeptidase (GGT) were determined in urine. Kidney histological study was also performed. Compared with control rats, MP significantly increased plasma glucose and creatinine levels accompanied by decreased urinary flow rate and elevated urinary excretion rates of glucose, phosphate, and albumin. Further, the activity of GGT in urine was increased significantly. The proximal cells exhibited cytoplasmic vacuolization, positive periodic acid Schiff inclusions, and brush border edge loss after 2 or 4 weeks following MP treatment. Finally, renal cortex samples were obtained at 2, 4, 6, and 8 weeks of MP treatment, and the concentrations of reduced glutathione (GSH) and glutathione peroxidase (GPx) activity were measured. The mRNA expression levels of BAX and tumor necrosis factor-α (TNF-α) were also determined (RT-PCR). MP significantly decreased renal GSH levels, increased GPx activity, as well as downregulated the mRNA expression of TNF-α and BAX. Densitometry analysis showed a significant reduction in TNF-α and BAX mRNA expression levels at 2 and 4 weeks following MP treatment. Low doses of MP produced structural and functional damage to the proximal tubules of male rat kidney. [ABSTRACT FROM PUBLISHER]

Published
2018
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38. Analytical Solutions of the Electrical RLC Circuit via Liouville-Caputo Operators with Local and Non-Local Kernels.

Author

Gómez-Aguilar, José Francisco, Morales-Delgado, Victor Fabian, Taneco-Hernández, Marco Antonio, Baleanu, Dumitru, Escobar-Jiménez, Ricardo Fabricio, and Al Qurashi, Maysaa Mohamed

Subjects
*RESISTOR-inductor-capacitor circuits, *LIOUVILLE'S theorem, *CAPUTO fractional derivatives, *COMPUTER simulation, *FRACTIONAL differential equations
Abstract

In this work we obtain analytical solutions for the electrical RLC circuit model defined with Liouville-Caputo, Caputo-Fabrizio and the new fractional derivative based in the Mittag-Leffler function. Numerical simulations of alternative models are presented for evaluating the effectiveness of these representations. Different source terms are considered in the fractional differential equations. The classical behaviors are recovered when the fractional order α is equal to 1. [ABSTRACT FROM AUTHOR]

Published
2016
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39. Evaluating phantom image quality parameters to optimise patient radiation dose in dental digital radiology.

Author

Gonzalez, Luciano, Vano, Eliseo, Fernandez, Ramon, Ziraldo, Viviana, Delgado, Jaime, Delgado, Victor, Moro, Javier, and Ubeda, Carlos

Subjects
IMAGING phantoms, IMAGE quality in radiography, PARAMETER estimation, RADIATION doses, DENTAL radiography, POLYMETHYLMETHACRYLATE, RADIATION exposure
Abstract

Our objective was to obtain images of a predictable level of quality using an intraoral X-ray system with digital imaging, avoiding patient overexposure. A polymethylmethacrylate (PMMA) physical test phantom was imaged at different exposure times and at various PMMA thicknesses using a dental imaging coupled charge device. Two identical regions of interest (ROIs) were chosen in every image file, and quality was numerically evaluated by measuring high-contrast spatial resolutions, low-contrast thresholds and signal-to-noise ratios. In addition, three practitioners proposed personal quality scores by image inspection. Numerical contents in the ROIs, related to the image quality, were plotted against exposure time. From here, a simple expression linking the exposure time with the thickness to obtain images of comparable quality was deduced. As a result, the optimum exposure time for imaging with a predictable level of quality can be inferred. The potential effect could imply savings above 1000 man Sv, roughly 20 % of the collective dose due to dental imaging, over a population of 1540 millions. [ABSTRACT FROM AUTHOR]

Published
2012
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40. Modulation of endothelial cell migration and angiogenesis: a novel function for the "tandem-repeat" lectin galectin-8.

Author

Delgado, Victor M. Cárdenas, Nugnes, Lorena G., Colombo, Lucas L., Troncoso, Maria F., Fernández, Marisa M., Malchiodi, Emilio L., Frahm, Isabel, Croci, Diego O., Compagno, Daniel, Rabinovich, Gabriel A., Wolfenstein-Todel, Carlota, and Elola, Maria T.

Subjects
*NEOVASCULARIZATION, *CAPILLARIES, *BASAL lamina, *GLYCANS, *GALECTINS, *PEPTIDES
Abstract

Angiogenesis, the growth OF new capillaries from preexisting blood vessels, is a complex process involving endothelial cell (EC) activation, disruption of vascular basement membranes, and migration and proliferation of ECs. Glycan-mediated recognition has been proposed to play an instrumental role in mediating cell-cell and cell-matrix interactions. Galectins (Gal), a family of glycan-binding proteins with affinity for (ß-galactosides and a conserved sequence motif, can decipher glycan- containing information and mediate cell-cell communication. Galectin-8 (Gal-8), a member of this family, is a bivalent "tandem-repeat"-type galectin, which possesses 2 CRDs connected by a linker peptide. Here, we show that Gal-8 is endowed with proangiogeneic properties. Functional assays revealed a critical role for this lectin in the regulation of capillary-tube formation and EC migration. Moreover, Matrigel, either supplemented with Gal-8 or vascular endothelial growth factor (VEGF), injected in mice resulted in induction of in vivo angiogenesis. Remarkably, Gal-8 was expressed both in the cytoplasm and nucleus in ECs of normal and tumor vessels. Furthermore, CD 166 [activated leukocyte cell adhesion molecule (ALCAM)] was identified as a specific Gal-8-bind-ing partner in normal vascular ECs. Collectively, these data provide the first evidence demonstrating an essential role for Gal-8 in the regulation of angiogenesis with critical implications in tumor biology. [ABSTRACT FROM AUTHOR]

Published
2011
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49. The EXPRES Stellar Signals Project II. State of the field in disentangling photospheric velocities

Author

Lily L. Zhao, Debra A. Fischer, Eric B. Ford, Alex Wise, Michaël Cretignier, Suzanne Aigrain, Oscar Barragan, Megan Bedell, Lars A. Buchhave, João D. Camacho, Heather M. Cegla, Jessi Cisewski-Kehe, Andrew Collier Cameron, Zoe L. de Beurs, Sally Dodson-Robinson, Xavier Dumusque, João P. Faria, Christian Gilbertson, Charlotte Haley, Justin Harrell, David W. Hogg, Parker Holzer, Ancy Anna John, Baptiste Klein, Marina Lafarga, Florian Lienhard, Vinesh Maguire-Rajpaul, Annelies Mortier, Belinda Nicholson, Michael L. Palumbo, Victor Ramirez Delgado, Christopher J. Shallue, Andrew Vanderburg, Pedro T. P. Viana, Jinglin Zhao, Norbert Zicher, Samuel H. C. Cabot, Gregory W. Henry, Rachael M. Roettenbacher, John M. Brewer, Joe Llama, Ryan R. Petersburg, Andrew E. Szymkowiak, Apollo-University Of Cambridge Repository, Zhao, LL [0000-0002-3852-3590], Fischer, DA [0000-0003-2221-0861], Ford, EB [0000-0001-6545-639X], Wise, A [0000-0002-5013-5769], Cretignier, M [0000-0002-2207-0750], Aigrain, S [0000-0003-1453-0574], Barragan, O [0000-0003-0563-0493], Bedell, M [0000-0001-9907-7742], Buchhave, LA [0000-0003-1605-5666], Camacho, JD [0000-0001-5121-5560], Cegla, HM [0000-0001-8934-7315], Cisewski-Kehe, J [0000-0002-9656-2272], Collier Cameron, A [0000-0002-8863-7828], De Beurs, ZL [0000-0002-7564-6047], Dodson-Robinson, S [0000-0002-8796-4974], Dumusque, X [0000-0002-9332-2011], Faria, JP [0000-0002-6728-244X], Gilbertson, C [0000-0002-1743-3684], Haley, C [0000-0003-3996-773X], Harrell, J [0000-0001-8936-6276], Hogg, DW [0000-0003-2866-9403], Holzer, P [0000-0001-8936-6276], John, AA [0000-0002-1715-6939], Klein, B [0000-0003-0637-5236], Lafarga, M [0000-0002-8815-9416], Lienhard, F [0000-0003-4047-0771], Maguire-Rajpaul, V [0000-0001-7576-6703], Mortier, A [0000-0001-7254-4363], Nicholson, B [0000-0003-1360-4404], Palumbo, ML [0000-0002-4677-8796], Ramirez Delgado, V [0000-0001-8183-459X], Shallue, CJ [0000-0002-7585-9974], Vanderburg, A [0000-0001-7246-5438], Viana, PTP [0000-0003-1572-8531], Zhao, J [0000-0001-5290-2952], Zicher, N [0000-0001-6143-2905], Cabot, SHC [0000-0001-9749-6150], Henry, GW [0000-0003-4155-8513], Roettenbacher, RM [0000-0002-9288-3482], Brewer, JM [0000-0002-9873-1471], Llama, J [0000-0003-4450-0368], Petersburg, RR [0000-0003-2168-0191], Szymkowiak, AE [0000-0002-4974-687X], Apollo - University of Cambridge Repository, Zhao, Lily L. [0000-0002-3852-3590], Fischer, Debra A. [0000-0003-2221-0861], Ford, Eric B. [0000-0001-6545-639X], Wise, Alex [0000-0002-5013-5769], Cretignier, Michaël [0000-0002-2207-0750], Aigrain, Suzanne [0000-0003-1453-0574], Barragan, Oscar [0000-0003-0563-0493], Bedell, Megan [0000-0001-9907-7742], Buchhave, Lars A. [0000-0003-1605-5666], Camacho, João D. [0000-0001-5121-5560], Cegla, Heather M. [0000-0001-8934-7315], Cisewski-Kehe, Jessi [0000-0002-9656-2272], Collier Cameron, Andrew [0000-0002-8863-7828], de Beurs, Zoe L. [0000-0002-7564-6047], Dodson-Robinson, Sally [0000-0002-8796-4974], Dumusque, Xavier [0000-0002-9332-2011], Faria, João P. [0000-0002-6728-244X], Gilbertson, Christian [0000-0002-1743-3684], Haley, Charlotte [0000-0003-3996-773X], Harrell, Justin [0000-0001-8936-6276], Hogg, David W. [0000-0003-2866-9403], Holzer, Parker [0000-0001-8936-6276], John, Ancy Anna [0000-0002-1715-6939], Klein, Baptiste [0000-0003-0637-5236], Lafarga, Marina [0000-0002-8815-9416], Lienhard, Florian [0000-0003-4047-0771], Maguire-Rajpaul, Vinesh [0000-0001-7576-6703], Mortier, Annelies [0000-0001-7254-4363], Nicholson, Belinda [0000-0003-1360-4404], Palumbo, Michael L., III [0000-0002-4677-8796], Ramirez Delgado, Victor [0000-0001-8183-459X], Shallue, Christopher J. [0000-0002-7585-9974], Vanderburg, Andrew [0000-0001-7246-5438], Viana, Pedro T. P. [0000-0003-1572-8531], Zhao, Jinglin [0000-0001-5290-2952], Zicher, Norbert [0000-0001-6143-2905], Cabot, Samuel H. C. [0000-0001-9749-6150], Henry, Gregory W. [0000-0003-4155-8513], Roettenbacher, Rachael M. [0000-0002-9288-3482], Brewer, John M. [0000-0002-9873-1471], Llama, Joe [0000-0003-4450-0368], Petersburg, Ryan R. [0000-0003-2168-0191], Szymkowiak, Andrew E. [0000-0002-4974-687X], Science & Technology Facilities Council, University of St Andrews. School of Physics and Astronomy, and University of St Andrews. St Andrews Centre for Exoplanet Science

Subjects
Radial velocity, astro-ph.SR, FOS: Physical sciences, QB Astronomy, Exoplanet detection methods, Astrophysics::Solar and Stellar Astrophysics, Instrumentation and Methods for Astrophysics (astro-ph.IM), Solar and Stellar Astrophysics (astro-ph.SR), QC, Stellar activity, QB, Earth and Planetary Astrophysics (astro-ph.EP), MCC, Spectrometers, The Solar System, Exoplanets, and Astrobiology, Astronomy and Astrophysics, 3rd-DAS, QC Physics, Astrophysics - Solar and Stellar Astrophysics, Space and Planetary Science, astro-ph.EP, Planet hosting stars, Astrophysics::Earth and Planetary Astrophysics, Astrophysics - Instrumentation and Methods for Astrophysics, astro-ph.IM, Astrophysics - Earth and Planetary Astrophysics
Abstract

Measured spectral shifts due to intrinsic stellar variability (e.g., pulsations, granulation) and activity (e.g., spots, plages) are the largest source of error for extreme precision radial velocity (EPRV) exoplanet detection. Several methods are designed to disentangle stellar signals from true center-of-mass shifts due to planets. The EXPRES Stellar Signals Project (ESSP) presents a self-consistent comparison of 22 different methods tested on the same extreme-precision spectroscopic data from EXPRES. Methods derived new activity indicators, constructed models for mapping an indicator to the needed RV correction, or separated out shape- and shift-driven RV components. Since no ground truth is known when using real data, relative method performance is assessed using the total and nightly scatter of returned RVs and agreement between the results of different methods. Nearly all submitted methods return a lower RV RMS than classic linear decorrelation, but no method is yet consistently reducing the RV RMS to sub-meter-per-second levels. There is a concerning lack of agreement between the RVs returned by different methods. These results suggest that continued progress in this field necessitates increased interpretability of methods, high-cadence data to capture stellar signals at all timescales, and continued tests like the ESSP using consistent data sets with more advanced metrics for method performance. Future comparisons should make use of various well-characterized data sets -- such as solar data or data with known injected planetary and/or stellar signals -- to better understand method performance and whether planetary signals are preserved., 33 pages (+12 pages of Appendix), 10 figures, 8 tables, accepted for publication in AJ

Published
2022
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