18 articles in this issue
O. Xosocotla, H. Martinez, B. Campillo
In this investigation, we studied the influence of atmospheric pressure plasma treatment on the surface properties of polypropylene (PP). The PP samples were treated for various durations using a gliding arc plasma source with air as a working gas. The fo... see more
A. Meléndez-López, M. F. García-Hurtado, J. Cruz-Castañeda, A. Negrón-Mendoza, S. Ramos-Bernal, A. Heredia
Aspartic acid is an amino acid present in the modern proteins, however, is considered a primitive amino acid hence its importance in prebiotic chemistry experiments studies. In some works of prebiotic chemistry have been studied the synthesis and the stab... see more
A. Lima Flores, R. Palomino-Merino, V. M. Castaño, J. I. Golzarri, G. Espinosa
The “measuring device” is one of the most reliable, efficient and economic indoor radon dosimeters that exist. This device was developed by the Proyecto de Aplicaciones de la Dosimetría (PAD) at the Physics Institute of UNAM (IF-UNAM) and consists of a tr... see more
Montero-Cabrera María Elena, Caraveo-Castro Carmen del Rocío, Méndez-García Carmen Grisel, Mendieta-Mendoza Aurora, Rentería-Villalobos Marusia, Cabral-Lares Rocío Magaly
Uranium is a radioactive element with a special presence in the rocks, waters, sediments, soils, and plants at the state of Chihuahua. The activity ratio of 238U/234U is used to explain the uranium transport by surface water and its deposition in arid env... see more
J. A. López, S. S. Romero González, O. Hernández Rodríguez, J. Holmes, R. Alarcon
Proton therapy uses a beam of protons to destroy cancer cells. A problem of the method is the determination of what part of the body the protons are hitting during the irradiation. In a previous study we determine that by capturing the gamma rays produced... see more
O. Flores, B. Campillo, F. Castillo, H. Martínez, J. Colín
Surface modification of polyethylene terephthalate (PET) was studied by corona discharge plasma at different exposure times using air as working gas. The modification of the surface properties are characterized, those are morphology and wettability. Coron... see more
M. D. P. Carreón-Castro, M. Caldera-Villalobos, B. Leal-Acevedo, A. M. Herrera-González
Chitosan is a bio-based polyelectrolyte with high potential for wastewater treatment. Chitosan can remove anionic dyes by adsorption but it has low performance in the removal of cationic dyes. In this work, we report the synthesis of chitosan-based graft-... see more
Ashwani Kumar Yadav, Basilia Quispe Huillcara, Pablo Víctor Cerón Ramírez, Modesto Antonio Sosa Aquino, Miguel Ángel Vallejo Hernández
Radiation application in medicine offers extraordinary benefits. But radiation is like a double-edged sword, it has both benefits and associated risks on the community in contact. To justify the safety of workers and members of the public, regulated use o... see more
C. Vázquez-López, O. Del Ángel-Gómez, R. Raya-Arredondo, S. Cruz-Galindo, J. I. Golzarri-Moreno, G. Espinosa
The neutron flux of the Triga Mark III research reactor was studied using nuclear track detectors. The facility of the National Institute for Nuclear Research (ININ), operates with a new core load of 85 LEU 30/20 (Low Enriched Uranium) fuel elements. The ... see more
L. Sajo-Bohus, J. A. López, M. Castro-Colin
Adverse effects of long-term exposure to galactic cosmic radiation (GCR) pose a non negligible obstacle for future space exploration programs; the high-LET-particle-rich environment has an adverse effect on human health. Concomitant to GCR we have as well... see more
O. Félix-Beltrán, J. E. Barradas-Guevara, F. González-Canales
We realize a model-independent study of the so-called Tri-Bi-Maximal pattern of leptonic flavor mixing. Different charged lepton mass matrix textures are studied. In particular, we are interested in those textures with a minimum number of parameters and t... see more
A. Chavarria, J. I. Golzarri, G. Espinosa
Radon (222Rn) is a radioactive gas, from the 238U decay chain, that contributes in large part of the natural radiation dose to which humans are exposed. Radon is the second cause of lung cancer after tobacco. The US-EPA considers a concentration of 148 Bq... see more
D. Osorio-González, V. J. Muñiz-Orozco, C. P. González, M. Fuentes-Acosta, J. Mulia-Rodríguez, L. A. Mandujano-Rosas
SARS-CoV-2 is responsible for causing the Coronavirus disease 2019 (COVID-19) pandemic, which has so far infected more than thirty million people and caused almost a million deaths. For this reason, it has been a priority to stop the transmission of the o... see more
Renteria-Villalobos Marusia, Mendieta-Mendoza Aurora, Montero-Cabrera María Elena, Manjón-Collado Guillermo, Galván-Moreno José Antonio
In arid zones, the principal water supply is from groundwater, which can present high concentration of salts, heavy metals, and radioactive elements. The aim of the study was to determine isotopic uranium concentration in groundwater samples with high con... see more
M. Rodríguez, E. Vázquez-Vélez, H. Martinez, A. Torres
Polymers currently represent materials that are cost-effective, while its recycled nature is significant in terms of environmental protection. However, the surface properties of polymers often do not meet the demands of wettability, adhesion, and friction... see more
C. Cisneros, T. Bautista, C. F. Betancourt, E. Prieto, A. Guerrero, I. Álvarez
Multiphoton absorption is an intensity dependent nonlinear effect related to the excitation of virtual intermediate states. In the present work, multiphoton ionization and dissociation of the formic acid molecule (HCOOH) by the interaction with photons fr... see more
E. Pardo L., S. E. Rodil, B. Campillo, I. Dominguez, J. G. González-Rodriguez, H. Martinez
Coatings by physical vapor deposition (PVD) have become highly relevant due to their wide range of applications and the rapid rate of coating formation. In this work, AISI steel 1045 was coated with two layers, Ni and Co using the PVD technique. Each coat... see more
C. H. Zepeda Fernández, Hernández Aguilar Javier Efrén, E. Moreno-Barbosa
The high time resolution detectors are relevant in those experiments or simulations were the particles to detect, have a very short time of flight (TOF), and due this it´s required that the detections times are ranged between ns. & ps.Using Geant4 softwar... see more