38 documents found, page 1 of 4
An automated bi‐level optimization approach for IMRT
Carrasqueira, P.; Alves, M. J.; Dias, J. M.; Rocha, H.; Ventura, T.; Ferreira, B. C.; Lopes, M. C.Intensity-modulated radiation therapy is used worldwide to treat cancer patients. The objective of this treat-ment is to deliver a prescribed radiation dose to the tumor while sparing, as much as possible, all the healthytissues, especially organs at risk (OAR). This means that the planning of a radiotherapy treatment shouldtake into consideration conflicting objectives: to be able to spare as much as possible t...
An automated treatment planning strategy for highly noncoplanar radiotherapy ar...
Carrasqueira, P.; Rocha, H.; Dias, J. M.; Ventura, T.; Ferreira, B. C.; Lopes, M. C.Radiation therapy is a technology-driven cancer treatment modality that has experienced significant advances over the last decades, due to multidisciplinary contributions that include engineering and computing. Recent technological developments allow the use of noncoplanar volumetric modulated arc therapy (VMAT), one of the most recent photon treatment techniques, in clinical practice. In this work, an automate...
An automated treatment planning strategy for highly noncoplanar radiotherapy ar...
Carrasqueira, P.; Rocha, Humberto; Dias, J. M.; Ventura, T.; Ferreira, B. C.; Lopes, M. C.Radiation therapy is a technology-driven cancer treatment modality that has experienced significant advances over the last decades, thanks to multidisciplinary contributions that include engineering and computing. Recent technological developments allow the use of noncoplanar volumetric arc therapy (VMAT), one of the most recent photon treatment techniques, in clinical practice. In this work, an automated nonco...
An automated bi‐level optimization approach for IMRT
Carrasqueira, P.; Alves, M. J.; Dias, J. M.; Rocha, H.; Ventura, T.; Ferreira, B. C.; Lopes, M. C.Intensity-modulated radiation therapy is used worldwide to treat cancer patients. The objective of this treatment is to deliver a prescribed radiation dose to the tumor while sparing, as much as possible, all the healthy tissues, especially organs at risk (OAR). This means that the planning of a radiotherapy treatment should take into consideration conflicting objectives: to be able to spare as much as possible...
The scrubland of limestone-derived decarbonated soils of the western Iberian Pe...
Costa, J. C.; Pinto-Gomes, C.; Lopes, M. C.; Neto, Carlos; Monteiro-Henriques, T.; Arsénio, P; Silva, V.; Capelo, J.; Lousã, M.; Rivas-Martínez, S.In the present article, the proposal of a new suballiance, Lavandulo luisieri-Cistenion albidi, is presented, constituted by chamaephytic and nanophanerophytic communities in eroded decarbonated soils derived from limestones (leptosols, chromic luvisols and cambisols) in the dry to lower hyperhumid, thermo-mesomediterranean bioclimatic levels. It is distributed throughout the western Iberian Peninsula in the Co...
Impact of RR soybeans and glyphosate on the community of soil surface arthropods
Pereira, J. L.; Lopes, M. C.; Parish, J. B.; Silva, A. A.; Picanço, M. C.O cultivo de plantas transgênicas de soja com genes de resistência ao glyphosate (soja RR) ocupa cerca de 47% da área mundial com essa cultura. Apesar da grande área cultivada com soja resistente ao glyphosate, são escassos os estudos sobre o impacto ambiental dessa tecnologia, principalmente em áreas tropicais. Assim, o objetivo deste estudo foi avaliar o impacto da soja RR e do glyphosate sobre a comunidade d...
Effect of watershed land use on water quality: A case study in córrego da olari...
Simedo, M. B.L. [UNESP]; Martins, A. L.M.; Pissarra, T. C.T. [UNESP]; Lopes, M. C.; Costa, R. C.A. [UNESP]; Valle-Junior, R. F.; Campanelli, L. C.Made available in DSpace on 2018-12-11T17:21:38Z (GMT). No. of bitstreams: 0 Previous issue date: 2018-11-01. Added 1 bitstream(s) on 2019-10-09T18:31:55Z : No. of bitstreams: 1 S1519-69842018000400625.pdf: 1497342 bytes, checksum: 7a65fd0d06ada0c5da906df993ab59e4 (MD5); The water quality is related to the hydrologic and limnologic properties of ground and surface water, and significant efforts have been made t...
Efeitos da adoção da IFRS 11 no reporte de acordos conjuntos: um estudo explora...
Lopes, M. C.; Lopes, A. I.Este estudo apresenta evidência sobre os efeitos da adoção da International Financial Reporting Standard (IFRS) 11, Joint arrangements (2011), emitida pelo International Accounting Standards Board (IASB) e integrada no denominado “pacote de consolidação”. Esta IFRS introduz várias alterações que potencialmente afetam o reporte de acordos conjuntos. O presente estudo complementa um anterior sobre a IFRS 10 (Lope...
Demonstrações financeiras consolidadas e reporte de acordos conjuntos: principa...
Lopes, M. C.; Lopes, A. I.O conceito de controlo inerente à elaboração de demonstrações financeiras consolidadas (DFC) e o reporte de acordos conjuntos registaram alterações pelo International Accounting Standards Board (IASB). Este artigo compara sucintamente o anterior normativo sobre estas temáticas com o atual, e sintetiza as principais conclusões de um estudo exploratório sobre os impactos reais (pós-adoção) da adoção da Internatio...
Biological dose-escalated definitive radiation therapy in head and neck cancer
Costa Ferreira, B.; Sá-Couto, P.; Khouri, L.; Lopes, M. C.To compare treatment outcome of patients with head and neck (HN) tumours treated with definitive radiation therapy that, mainly owing to differences in the fractionation scheme used with simultaneous integrated boost techniques, resulted in a different biological dose. Methods: 181 patients with HN cancer, prescribed to about 70.2Gy in the primary tumour, were included in this study. Population cohort was divid...