Astrid Sánchez

ORCID: 0000-0002-5190-8487
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About
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Research Areas
  • Prostate Cancer Diagnosis and Treatment
  • Thermochemical Biomass Conversion Processes
  • Advanced Radiotherapy Techniques
  • Prostate Cancer Treatment and Research
  • Catalytic Processes in Materials Science
  • Catalysis for Biomass Conversion
  • Medical Imaging Techniques and Applications
  • Zeolite Catalysis and Synthesis
  • Catalysis and Hydrodesulfurization Studies
  • Thermal and Kinetic Analysis
  • Radiomics and Machine Learning in Medical Imaging
  • Pain Management and Opioid Use
  • Biodiesel Production and Applications
  • Pharmacogenetics and Drug Metabolism
  • Effects of Radiation Exposure
  • Subcritical and Supercritical Water Processes
  • CO2 Reduction Techniques and Catalysts
  • Enzyme Catalysis and Immobilization
  • Innovative Microfluidic and Catalytic Techniques Innovation
  • Colorectal Cancer Surgical Treatments
  • Colorectal Cancer Screening and Detection
  • Crystallography and molecular interactions
  • Opioid Use Disorder Treatment
  • Tissue Engineering and Regenerative Medicine
  • Catalysts for Methane Reforming

Island Hospital
2025

NYU Langone Health
2022-2024

Universidad Nacional de Colombia
2017-2024

Universidad de Antioquia
2006-2023

University of Alicante
2023

Hinge Health
2021

Energy Fuels (United States)
2018

<title>Abstract</title> <bold>Purpose</bold> Pelvic nodal irradiation is used for high-risk prostate adenocarcinoma. As an alternative to LDR brachytherapy, a 3-fraction SBRT boost with fiducial tracking may allow better coverage of extracapsular extension and macroscopic seminal vesicle invasion. This study evaluates the impact prior pelvic on during subsequent robotic stereotactic body radiation therapy (SBRT) cancer compares these outcomes cohort patients undergoing definitive 5-fraction...

10.21203/rs.3.rs-5567210/v1 preprint EN Research Square (Research Square) 2025-04-07

Interindividual variability in analgesic response is at least partly due to well-characterized polymorphisms that are associated with opioid dosing and adverse outcomes. The Clinical Pharmacogenetics Implementation Consortium (CPIC) has put forward recommendations for the CYP2D6 phenotype, but list of studied drug-gene pairs continues grow. This clinical trial randomized chronic pain patients (n = 60), referred from primary care unit into two prescribing arms, one guided by CYP2D6, μ-opioid...

10.3390/ijms241310754 article EN International Journal of Molecular Sciences 2023-06-28

A density functional theory study was carried out to evaluate different possibilities of heterogeneous CO2 desorption in combustion/gasification reactions. First, we investigated the evolution induced as a secondary reaction caused by CO readsorption on an oxidized surface, which produces carbonate-like surface complex. This group found decompose with activation energy 60 kcal/mol. Another possibility for formation during char combustion or gasification is through molecular O2 chemisorption...

10.1021/jp065701i article EN The Journal of Physical Chemistry C 2006-12-09

In the present study, 20 wt % K2CO3 was added to coal and coal/biomass blends in a 20:80 ratio subsequently were heating-treated at 600 °C using CO2 or N2 atmospheres. The reactivity under oxy-combustion conditions (21% O2 + 79% CO2) studied by thermogravimetry, characterization of chars carried out adsorption, scanning electron microscopy, Raman X-ray photoelectron spectroscopy. Higher activation energy for impregnated compared observed, likewise, materials thermally treated with CO2. It is...

10.1021/acs.energyfuels.7b03399 article EN Energy & Fuels 2018-01-01

Fourier transform infrared (FTIR) spectroscopy has been used for online monitoring of the gaseous products, resulting from combustion a small amount carbonaceous material with high nitrogen content. The experiments were carried out using fluidized-bed reactor connected to FTIR gas cell. Spectra collected every 2 s during transient reaction, and this information, very detailed quantitative evolution profiles NO, N2O, CO2 determined. This approach is an option tracking products in fast...

10.1021/ef100575v article EN Energy & Fuels 2010-08-12

Oxy-fuel combustion processes involve high CO2 partial pressures. Therefore, gasification reactions of carbonaceous materials with may take place in addition to O2. A thermodynamic analysis both was carried out through electronic structure calculations order evaluate the previous hypothesis. In most cases, evaluated adsorption are thermodynamically favorable, while CO evolution from oxidized material endothermic although exergonic at temperatures. Our results indicate that simultaneous...

10.1080/00102202.2018.1454916 article EN Combustion Science and Technology 2018-04-06

In the present study, wood biomass from Acacia mangium and its main components (hemicellulose (xylan), cellulose, lignin) were blended with a sub-bituminous coal in 20:80 wt % ratio subsequently heat-treated at 900 °C using CO2 or N2 atmospheres. The reactivity (ignition temperature activation energy) under oxy-fuel conditions (21% O2–79% CO2) was studied by thermogravimetry (TGA). It has been observed that adding to improved combustion efficiency. Coal/biomass coal/xylan/cellulose/lignin...

10.1021/acs.energyfuels.7b00533 article EN Energy & Fuels 2017-04-11

315 Background: Invasive procedures including biopsies in freshly irradiated tissue is a known risk factor for high-grade toxicity. Screening colonoscopies (CS) are often performed before radiotherapy given the need to rule out comorbid gastrointestinal conditions and avoid untoward post instrumentation of pelvis. We investigate association pre-treatment CS colonic finding therein with subsequent GI toxicity following SBRT prostate cancer. Methods: An institutional registry patients...

10.1200/jco.2024.42.4_suppl.315 article EN Journal of Clinical Oncology 2024-01-29

Purpose Modern literature has demonstrated improvements in long-term biochemical outcomes with the use of prophylactic pelvic nodal irradiation followed by a brachytherapy boost management high-risk prostate cancer. However, this comes at cost increased treatment-related toxicity. In study, we explore largest cohort to date, which uses stereotactic body radiation therapy (SBRT) following for exclusively Methods and materials A large institutional database was interrogated identify all...

10.3389/fonc.2024.1325200 article EN cc-by Frontiers in Oncology 2024-02-06

Abstract Purpose Percentage of positive cores involved on a systemic prostate biopsy has been established as risk factor for adverse oncologic outcomes and is National Comprehensive Cancer Network (NCCN) independent parameter unfavorable intermediate-risk disease. Most data from radiation standpoint was published in an era conventional fractionation. We explore whether the higher biological dose delivered with SBRT can mitigate this factor. Methods A large single institutional database...

10.1186/s13014-023-02397-z article EN cc-by Radiation Oncology 2024-03-04

Chemical bonding is a central topic in general chemistry courses. Lewis (1916) published fundamental paper where he proposed model based on localized electron pairs and as consequence, gave rise to the octet rule. However, discovery of xenon fluorides compounds such SF6 concept “hypervalence” involving d orbitals hybridization schemes. Currently, it has been demonstrated that have negligible participation bonds molecules and, some cases rule not violated. This article proposes discussion...

10.15446/rev.fac.cienc.v13n1.108223 article EN cc-by-nc-nd Revista de la Facultad de Ciencias 2024-01-01

Experimental formation of hydroxyacetone (HA) from glycerol over La2CuO4 catalyst under mild experimental conditions (533 K, N2 atmosphere) was correlated with molecular modeling results the aim to propose reaction pathways. Based on these results, a novel mechanism in terms elementary reactions is proposed for gaseous phase process. The suggest that there are two main routes contribute HA formation. and more feasible pathway corresponds direct 1,2-dehydration glycerol. second involves...

10.15446/dyna.v86n208.69941 article EN cc-by-nc-nd DYNA 2019-01-01

PurposeAdvancements in breast radiation therapy offer innumerable benefits to patients and the health care system. Despite promising outcomes, clinicians remain hesitant about long-term side effects disease control with accelerated partial (APBI). Herein, we review outcomes of early-stage cancer treated adjuvant stereotactic irradiation (SAPBI).Methods MaterialsThis retrospective study examined who received diagnoses robotic SAPBI. All were eligible for standard ABPI underwent lumpectomy,...

10.1016/j.adro.2022.101095 article EN cc-by-nc-nd Advances in Radiation Oncology 2022-12-09

You have accessJournal of UrologyCME1 Apr 2023PD15-12 IMPACT OF MRI DETECTED HYDROGEL SPACER RECTAL WALL INFILTRATION ON RADIATION-RELATED TOXICITY FOLLOWING 5-FRACTION PROSTATE STEREOTACTIC BODY RADIATION THERAPY Jonathan W. Lischalk, A. Haas, Vianca Santos, Christopher Mendez, Astrid Sanchez, Ankur Doshi, David Sadowsky, Samir S. Taneja, Aaron Katz, and Angela Tong LischalkJonathan Lischalk More articles by this author , HaasJonathan Haas SantosVianca Santos MendezChristopher Mendez...

10.1097/ju.0000000000003262.12 article EN The Journal of Urology 2023-03-23

El carbón es uno de los combustibles fósiles más empleados para la producción energía eléctrica, y diferentes actividades industriales domésticas. Sin embargo, el uso este combustible genera emisiones nocivas ambiente; entre ellos se encuentra CO2 , principal producto combustión que actúa como gas efecto invernadero. Se han estudiado procesos con fin disminuir emisión a atmósfera, oxi-combustión, consiste en emplear una atmósfera enriquecida O2 obtener alta concentración gases facilite su...

10.18257/raccefyn.36(138).2012.2438 article ES cc-by-nc-sa Revista de la Academia Colombiana de Ciencias Exactas Físicas y Naturales 2023-12-22
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