Optimum sizing of bare-tape tethers for de-orbiting satellites at end of mission

…, SB Khan, G Sánchez-Arriaga… - Advances in Space …, 2015 - Elsevier
De-orbiting satellites at end of mission would prevent generation of new space debris. A
proposed de-orbit technology involves a bare conductive tape-tether, which uses neither …

Análisis retrospectivo observacional de un programa de optimización del uso de antimicrobianos

A Sánchez Arriaga - 2022 - uvadoc.uva.es
El objetivo de este trabajo es determinar si la implementación de un programa de optimización
del uso de antimicrobianos (PROA) en un Servicio de Medicina Intensiva de tipo audit …

Prevalence of chronic rheumatic diseases in Mexico

C Abud-Mendoza, A Sanchez-Arriaga… - The Journal of …, 2011 - jrheum.org
We read with interest the recent report from Peláez-Ballestas, et al1 related to the epidemiology
of rheumatic disease in Mexico, which included 5 regions. Most of the study population …

Analysis of tether-mission concept for multiple flybys of moon Europa

…, M Charro, HB Garrett, G Sánchez-Arriaga… - Journal of Propulsion …, 2017 - arc.aiaa.org
All four giant planets, far from the Earth and sun and having deep gravitational wells, present
propulsion and power mission issues, but they also have an ambient plasma and magnetic …

Comparison of technologies for deorbiting spacecraft from low-earth-orbit at end of mission

G Sánchez-Arriaga, JR Sanmartín, EC Lorenzini - Acta astronautica, 2017 - Elsevier
An analytical comparison of four technologies for deorbiting spacecraft from Low-Earth-Orbit
at end of mission is presented. Basic formulas based on simple physical models of key …

Validation of enabling technologies for deorbiting devices based on electrodynamic tethers

…, L Olivieri, A Brunello, G Sarego, G Sánchez-Arriaga… - Acta Astronautica, 2022 - Elsevier
The increasing number of man-made objects in near-earth space is becoming a serious
problem for future space missions around the Earth. Among the proposed strategies to face this …

A bare-photovoltaic tether for consumable-less and autonomous space propulsion and power generation

M Tajmar, G Sánchez-Arriaga - Acta Astronautica, 2021 - Elsevier
State-of-the-art electrodynamic tethers reach a steady electric current by using a bare segment
to capture electrons passively from the ambient plasma (anodic contact) and an active …

Predicción de variación de precio de una acción en el mercado bursátil mexicano mediante modelos de regresión

LA Sánchez Arriaga - 2020 - repositorio.lasalle.mx
La presente investigación hace un esfuerzo por al menos proponer una solución ante estos
dos problemas. Por un lado, se introducen modelos de aprendizaje de máquina (…

Electrical model and optimal design scheme for low work-function tethers in thrust mode

G Sánchez-Arriaga, JR Sanmartín - Aerospace science and technology, 2020 - Elsevier
A low work-function tether (LWT), a subclass of bare electrodynamic tether made of a conductor
partially coated with a low work function material, can exchange momentum and energy …

[PDF][PDF] Tape-tether design for de-orbiting from given altitude and inclination

…, SB Khan, G Sánchez-Arriaga… - Proc. 6th European …, 2013 - academia.edu
The product Π of the tether-to-satellite mass ratio and the probability of tether cuts by small
debris must be small to make electrodynamic bare tethers a competitive and useful de-…