A5013107283- Laser-Plasma Interactions and Diagnostics
- Nuclear Physics and Applications
- Spine and Intervertebral Disc Pathology
- Laser-induced spectroscopy and plasma
- Spinal Fractures and Fixation Techniques
- Meningioma and schwannoma management
- Radiation Detection and Scintillator Technologies
- Global Health and Surgery
- High-pressure geophysics and materials
- Plasma Diagnostics and Applications
- Ion-surface interactions and analysis
- Neurofibromatosis and Schwannoma Cases
- Head and Neck Surgical Oncology
- Laser Design and Applications
- Cervical and Thoracic Myelopathy
- Cardiac, Anesthesia and Surgical Outcomes
- Fusion materials and technologies
- History of Medical Practice
- COVID-19 and healthcare impacts
- Musculoskeletal pain and rehabilitation
- Radiation Therapy and Dosimetry
- Infectious Diseases and Tuberculosis
- Case Reports on Hematomas
- Clinical Reasoning and Diagnostic Skills
- Adrenal and Paraganglionic Tumors
Centro Médico ABC
2019-2023
Universidad Nacional Autónoma de México
2006-2023
Hospital General de México
2022-2023
Universidad de Sonora
2019-2021
Instituto de Salud del Estado de México
2021
Mexican Social Security Institute
2020
Hospital de Especialidades
2014
Centro Medico Nacional Siglo XXI
2014
Instituto Nacional de Investigaciones Nucleares
2004
Scientific knowledge today is being generated more rapidly than we can assimilate thus requiring continuous review of gold-standards for diagnosis and treatment specific pathologies. The aim this paper to provide an update on the best early management spinal cord injury (SCI), in order produce acceptable worldwide recommendations standardize clinical practice as much possible.The WFNS Spine Committee voted regarding SCI based literature last 10 years. committee stated 9 3 main topics: (1)...
The average angular distribution of neutron emissions has been measured in the Fuego Nuevo II (FN-II) dense plasma focus device (5 kJ) by means CR-39 plastic nuclear track detectors. When pure deuterium is used as filling gas, data can be adjusted to a Gaussian function, related anisotropic emission, superposed on constant pedestal, isotropic emission. deuterium–argon admixtures are used, contribution best represented parabola. same analysis applied previously reported results, for fewer...
The FN-II Dense Plasma Focus is a small (< 5kJ ) Mather type device, where the dependence of neutron yield and its anisotropy, in terms deuterium filling pressure, emission angular distribution have been studied. Two diferent electrode configurations tested, showing that their geometry plays an important role both on anisotropy. Time integrated anisotropy has measured with silver activation counters, shot to basis. CR-39 nuclear track detectors are used determine neutrons, averaged over tens...
Time integrated measurements of the angular distributions fusion products and x rays in a small dense plasma focus machine are made inside discharge chamber, using passive detectors. The is operated at 37kV with stored energy 4.8kJ deuterium filling pressure 2.75torr. Distributions protons neutrons measured CR-39 Lantrack® nuclear track detectors, on 1.8×0.9cm2 chips, 500μm thick. A set detectors was placed semicircular Teflon® holder, 13cm away from column, covered 15μm Al filters, thus...
Radiographs are obtained with a small (4.6kJ) dense plasma focus machine, using the x-rays which cross 300μm aluminum window on axis. Contrast is improved by inserting an iron needle tip of electrode. Measurements TLD-100 dosimeters have shown average dose to increase from 0.077±0.006mGy/shot, when hollow cathode used, 0.11±0.01mGy/shot, needle. The spectrum estimated filters and effective equivalent energy found be in range 20–25keV.
Abstract Prospective randomized double-blinded diagnostic accuracy study about radiological grading of fusion after minimally invasive lumbar interbody procedures (MI-LIFP). To determinate the intra and inter-observer correlation between different scales (RLIFGS) in patients undergoing MI-LIFP their to clinical outcome. Besides technological improvements medical diagnosis many existing RLIFGS, surgical exploration continues be gold-standard assess with pseudarthrosis, little if any research...
Synovial cysts are commonly associated with instability. Whether to fuse patients is a matter of controversy. Simple resection may offer favorable clinical outcomes but come at the expense recurrence rate. We describe our experience minimally invasive management these lesions using microsurgical dissection through tubular retractor system.A retrospective cohort study symptomatic synovial treated by approach from 2001 2018 was performed. evaluated variables such as preexisting spinal...
Cervical spine surgery (anterior cervical [ACSS]) is a commonly indicated to provide neurological decompression, correct deformity, and preserve stability. Current series report good excellent results, but number of patients suffer from dysphagia with reported rates as high 80%.Retrospective cohort undergoing ACSS discectomy fusion [ACDF]; arthroplasty, total disc replacement [TDR]) 2013 2017 by single surgeon. We collected demographic data, surgical outcomes, clinical incidence magnitude...
Adsorption and desorption of the filling gas, by electrodes, insulator chamber materials plasma focus devices, have been suggested as probable causes for fluctuations in their neutron yield. This work describes analysis data, aimed at looking evidence to support this hypothesis. Before starting each series discharges, a vacuum around 10−6 Torr is achieved. The pure deuterium, maintained under static conditions. A sudden fall initial pressure, 5%, systematically observed after first shot...
The dense plasma focus is a coaxial gun in which high-density, high-temperature obtained focused column for few nanoseconds. When the filling gas deuterium, neutrons can be from fusion reactions. These are partially due to beam of deuterons accelerated against background hot by large electric fields originating instabilities. Due beam-target effect, angular distribution neutron emission anisotropic, peaked forward direction along axis gun. purpose this work illustrate use CR-39 nuclear track...
The Fuego Nuevo II (FN‐II) dense plasma focus machine is a small device (∼5kJ @ 37 kV). In order to have an adequate picture of the neutron pulse with temporal resolution, set five similar scintillation‐photomultiplier detectors been assembled, using BC‐400 scintillators, 50 mm high and 120mm radius, coupled photomultipliers. These are shielded by lead wall, copper foil 3 thick, respectively. This work shows some preliminary results, in which response systems shown, when they placed 7.5 m...
The FN-II is a small dense plasma focus (4.8 kJ at 36 kV), operated the Universidad Nacional Autonoma de Mexico. Substantial effort has been dedicated to study of anisotropy in neutron and hard X-ray radiation. Concerning former, it observed that there an anisotropic distribution superposed on far larger isotropic one. These clearly separated effects can be interpreted as consequence two different emission mechanisms. angular X-rays ions also studied within chamber with TLD CR-39 detectors...
A most interesting feature of dense plasma foci is the acceleration charge particle at energy in range MeV per nucleon. Using deuterium gas, this devices produce fusion D-D reactions, generating fast neutron pulses (∼ 2.5 MeV). This work describes studies phenomenon a low device 5 kJ) with 3 cm diameter and 10 long, copper inner electrode. The outer electrode diameter. operated four 1.863 μF capacitor parallel 38 kV. Neutrons accelerated particles are analyzed PADC material detectors (CR-39...
Neutron bubble detectors have been studied using Am-Be and D-D neuron sources, which give limited energy information. The Bubble Detector Spectrometer (BDS) six different thresholds ranging from 10 KeV to Mev. number of bubbles obtained in each measurement is related the dose (standardized response R) equivalent neutrons through sensitivity (b / μSv) also with neutron flux (neutrons per unit area) a relationship that provided by manufacturer. were used answers (0.11 b/ μSv, 0093 b/μSv, 0.14...