The effects of global change are modifying the fundamental characteristics of the oceans, generating variations in different physical-chemical parameters (e.g. temperature, salinity, oxygen, pH, among others). Greenhouse gas models indicate that an evident increase in the levels of atmospheric ca...
Los efectos del cambio global están modificando las características fundamentales de los océanos, generando variaciones en diferentes parámetros físico-químicos (e.g. temperatura, salinidad, oxígeno, pH, entre otros). Los modelos de gases de efecto invernadero indican que un evidente incremento e...
La existencia de un exceso de positrones en los rayos cósmicos provenientes del centro galáctico fue reportado por PAMELA en el rango de energías 10-100 GeV, para posteriormente ser confirmado por Fermi-LAT y extendido el rango de energía a 200 GeV. Recientemente se ha vuelto a confirmar con mayo...
The existence of an excess of positrons in the cosmic rays from the galactic center was reported by PAMELA in the energy range 10-100 GeV, subsequently be confirmed by Fermi-LAT and extended the energy range to 200 GeV. Recently it has been confirmed again with greater precision by AMS. The inter...
Los skyrmions magnéticos han sido intensamente investigados durante la última década debido a que exhiben novedosas propiedades que los convierten en candidatos para el desarrollo de futuras generaciones de dispositivos espintrónicos, tales como, memorias pista de carreras, dispositivos lógicos, ...
Magnetic skyrmions have been intensively researched during the last decade because
they exhibit novel properties that make them a candidate for the development of future
generations of spintronic devices, such as racetrack memories, logic devices, transistors
or nano-oscillators. Due to their ...
Esta tesis se centra en estudiar los efectos de la energía dipolar, anisotropía uniaxial, interacción de Dzyaloshinskii-Moriya y un campo magnético externo aplicado sobre la estabilidad de texturas magnéticas alojadas en cilindros nanométricos, así como también los efectos de la difusión de espín...
This thesis is centered in the study the effects of dipolar energy, uniaxial anisotropy,
Dzyaloshinskii-Moriya interaction (DMI) and an external magnetic field on
the magnetic textures stability hosted in nano-cylinders, as well as the effect of spin
diffusion on the dynamic of magnetic textur...
En este trabajo se estudia la adsorción sobre superficies metálicas de tres sistemas moleculares constituidos por un fragmento central aromático naftalénico o antracénico y dos cadenas vinil piridínicas. Estas moléculas presentan un gran potencial para ser aplicadas en electrónica molecular. Las ...
In this work, the adsorption on metallic surfaces of three molecular systems constituted by a naphthalene or anthracene central aromatic fragment and two vinyl pyridine chains is studied. These molecules have a great potential to be applied in molecular electronics. The surfaces correspond to sph...
En esta tesis se estudiaron distintos aspectos de nanopartı́culas huecas (NPH) por medio de simulaciones de dinámica molecular. Primero, se analizó su estabilidad térmica, la cual está fuertemente relacionada con dos de sus parámetros geométricos: radio externo y espesor. Se observó que bajo alg...
In this thesis, different aspects of hollow nanoparticles (NPH) were studied by means of molecular dynamics simulations. First, the thermal stability was analyzed, which is strongly related to its geometric parameters: external radius and thickness. It was observed that under some combinations of...
El objetivo general de la presente tesis fue la síntesis de quinonas heterocíclicas derivadas de benzofuranoquinonas con actividad biológica potencial.
Este estudio se inicia con la síntesis de una serie de derivados de rhinacantona, producto natural con propiedades antitumorales, utilizando com...
The general objective of the present thesis was the synthesis of heterocyclic quinones derived from benzofuranoquinones with potential biological activity.
This study begins with the synthesis of several Rhinacantone analogs, natural product with antitumor properties, using Diels-Alder reacti...
During the last years, several pollutants of emerging concern have been detected in industrial wastewater, mainly antibiotics. Which have been found to be resistance to photo and biodegradation. Therefore, new technologies such as advanced electrochemical oxidation processes (AEOPs) coupled with ...
Crimes involving firearms and explosives have increased in recent decades globally, which effect on security sense of society. Currently, gunshot residues (GSR) detection is based on the determination of Pb, Ba and Sb by scanning electron microscopy with energy dispersive detector (SEM-EDX), with...
Pesticides are substances widely used to control pests, which spread to the environment in large quantities. Most of these compounds have toxic effects on humans and other species. Their removal from the environment is mainly carried out by bacteria that have conjugative catabolic plasmids, which...
