Search results for " Ala"
showing 10 items of 239 documents
Relaciones genealogicas de la Casa de los Marqueses de Trocifal, Condes de Torresuedras, su varonia Zeuallos de Alarcon, y por la Casa, y primer apel…
1656
Grav. xil., escuts heràldics Text a 2 col. - Postilles Sign.: ^6, A-Mm6, Nn8, A-K6, L8. - Errates de pag.: en 2a seqüència: 335 per 135
ALANINE/EPR DOSIMETRY APPLIED TO THE VALIDATION OF A TOTAL BODY IRRADIATION (TBI) PROTOCOL AND TREATMENT PLANNING DOSE CALCULATION USING A HUMANOID P…
2015
L’irraggiamento a corpo intero (Total Body Irradiation - TBI) è una tecnica di radioterapia oncologica di largo impiego nella clinica ematoncologica nell’ambito del trattamento di pazienti avviati al trapianto di midollo osseo o al trapianto di cellule staminali periferiche. La TBI da una parte permette di sopprimere il sistema immunitario del ricevente per prevenire il rigetto del midollo del donatore ed eliminare le cellule neoplastiche residue dai trattamenti chemioterapici. In genere, la modalità di somministrazione della TBI prevede irraggiamenti in 3 giorni consecutivi con un bi-frazionamento giornaliero (2 Gy, 2 volte al giorno con intervallo minimo di 6 ore tra le sedute, per 3 gior…
EPR DOSIMETRY WITH ALANINE FOR TOTAL BODY IRRADIATION USING AN ANTHROPOMORPHIC PHANTOM
2016
The Total Body Irradiation (TBI) is a radiation therapy technique widely used in clinical hemato-oncological treatment of patients that underwent bone marrow transplantation or peripheral stem cell transplantation. Typically, the administration of TBI treatment provides irradiations in 3 consecu-tive days with a double daily fractionation, although other dose fractionation modes have been widely adopted in the clinic procedures. Although this tech-nique allows to irradiate the whole body from head to toes, it has some limitations such as the lack of homogeneity of the dose distribution (which can show varia-tions of 20% in the different areas), irradiation of critical organs such as lungs, …
Syntaxonomy and ecology of mesophilous scrub vegetation in Tajikistan (Middle Asia)
2022
Aims: In this paper we propose the first syntaxonomic classification for the mesophilous scrub vegetation in Tajikistan with some remarks on their environmental variability. Methods: Altogether 120 relevés were sampled using the standard, seven-degree cover-abundance scale of Braun-Blanquet, in 2015–2021. They were classified by the modified TWINSPAN method using the four step interval scale with cutoff levels of 0%, 2%, 5% and 10% and total inertia as a measure of cluster heterogeneity. Diagnostic species were identified using the phi coefficient as a fidelity measure. Detrended Correspondence Analysis (DCA) was used to determine the relationship between the sampled plots, vegetation units…
PIECEWISE ANOMALY DETECTION USING MINIMAL LEARNING MACHINE FOR HYPERSPECTRAL IMAGES
2021
Abstract. Hyperspectral imaging, with its applications, offers promising tools for remote sensing and Earth observation. Recent development has increased the quality of the sensors. At the same time, the prices of the sensors are lowering. Anomaly detection is one of the popular remote sensing applications, which benefits from real-time solutions. A real-time solution has its limitations, for example, due to a large amount of hyperspectral data, platform’s (drones or a cube satellite) constraints on payload and processing capability. Other examples are the limitations of available energy and the complexity of the machine learning models. When anomalies are detected in real-time from the hyp…
An Efficient Synthesis of Tenofovir (PMPA): A Key Intermediate Leading to Tenofovir-Based HIV Medicines
2020
Abstract: Herein, we report further improvements to the synthesis of tenofovir 1, the precursor to tenofovir disoproxil fumarate and tenofovir alafenamide fumarate. Starting from acyclic precursor diaminomalononitrile 12, a four-step protocol to tenofovir 1 will allow for vertical integration for more manufacturers. The key transformation is a more convergent one step procedure from 6 as compared to the current commercial process, with an improved yield from 59% (two steps) to 70%. Further improvements include eliminating the need for problematic magnesium tert-butoxide (MTB) and significant solvent reduction by eliminating the need for an intermediate workup. With the costs of HIV/AIDS tre…
Study time effects in recognition memory.
2004
We empirically tested the assumption that study time increases recognition accuracy because the storage of information is better when study time is longer as Shiffrin and colleagues have reported, an assumption common to parallel models of recognition. In the present study with 123 subjects, we examined the effect of item strength on four measures: hit rate, false alarm rate, d′, and β, for a single-word recognition task with longer study times than those usually used in the literature. Analysis indicated significant increase for hit rate and d′ and a decrease in false alarm rate, as one goes from weak to stronger study conditions, and a change in ln(β) when study time is greater than 1 se…
EPR/alanine dosimetry for verification in Helical Tomotherapy Stereotactic Radiosurgery (HTSRS) treatments
2018
Introduction Intracranial stereotactic radiosurgery (SRS) is a technique to deliver an ablative radiation dose with an extremely sharp dose gradient to small brain tumors. In this study the accuracy of the dose delivered in SRS by a non conventional radiotherapy machine, the TomoTherapy Hi-Art System, was investigated using an "end-to-end" test using alanine pellets and gafchromic films. Methods Dose verifications were made using alanine dosimeters placed in an antropomorphic head phantom (Alderson Rando Phantom) under different treatment conditions in case of both single and multiple brain tumors. 1.25mm slice kVCT scan of the phantom was used to generate SRS plans on the TomoTherapy Plann…
Tragedia e senso del tragico in Torquato Tasso e nel secondo Cinquecento
Scopo della presente dissertazione è quello di indagare la tragedia e il tragico, in Torquato Tasso e negli autori del Secondo Cinquecento, attraverso un’indagine a largo spettro che, a partire dagli scritti che teorizzano le regole proprie del genere tragico (trattati, commentari, lettere etc.) e attraverso la delineazione di un macrotema utile a definirne gli elementi più caratteristici, si conclude con un’ultima sezione mirante a indagare il “senso del tragico”. La tesi, infatti, si divide in tre sezioni: nella prima s’indaga il significato di Tragedia nel secondo Cinquecento attraverso la trattatistica, nella seconda si affronta un macro-tema, le amicizie tragiche, volto a sunteggiare i…