Publications by authors named "Salvador Alvarado"
Thermal lens spectroscopy (TLS) is a high-sensitivity method to determine the concentration of light-absorbing species in samples. Here, we implemented a transient configuration of the technique, with a focused pump and a collimated probe beam coaxially propagating. A Fabry-Perot optical resonator is incorporated allowing multi-passing of the probe beam through the sample to enhance sensitivity.
View Article and Find Full Text PDFWe developed a pump-probe photothermal lens spectrophotometer that uses a broadband arc-lamp and a set of interference filters to provide tunable, nearly monochromatic radiation between 370 and 730 nm as the pump light source. This light is focused onto an absorbing sample, generating a photothermal lens of millimeter dimensions. A highly collimated monochromatic probe light from a low-power He-Ne laser interrogates the generated lens, yielding a photothermal signal proportional to the absorption of light.
View Article and Find Full Text PDFBackground: Symptoms of depression and anxiety are common in patients with lung cancer and may produce an impact on both health-related quality of life (HRQL) and survival. The aim of the present study was to evaluate the association of depression and anxiety on HRQL, treatment adherence, and prognosis in patients with non-small cell lung cancer (NSCLC).
Methods: This is a prospective study of patients with stage IIIB or IV NSCLC.
Introduction: Lung cancer (LC) is the first cause of cancer-related mortality worldwide and health-related quality of life (HRQL) is a fundamental outcome for evaluating treatment results. Our objective was to validate the Mexican-Spanish versions of the European Organisation for Research and Treatment of Cancer (EORTC) Quality-of-Life QLQ-LC13 disease-specific questionnaire module in Mexican patients with LC; and to explore the possible prognostic role of HRQL data.
Methods: Translation procedures followed EORTC guidelines.