230 research outputs found
Tourism planning informatization
The Tourism activity, due to its own characteristics, causes high environmental impact and its development should be influenced by the environmental characteristics of each region.
The Information Systems, mainly those which represent the geographical information, will permit the development of a design, allowing the Decision-Maker the consult, the management and the presentation of decision schemes based on the defined measures of the Tourism Planning of a region. As the information associated with this design should be real and update, the Internet should be used as a means of access to the information of the region.
The design presents the schemes associated to each decision, offering competitive advantages to the Decision-Makers involved in the decision process, since it is possible to evaluate, foresee and control the future environmental impacts of Tourism
GIS on tourism planning: preventing the impacts caused by the developing tourism activity in a specific site
The environment is one of the greatest concerns of humankind. Nowadays, the activities which improve or destroy it must be assessed and controlled by efficient means which should permit the control of environmental impact caused by the development of these activities. This document presents an information system implementation, as a Decision Support system, allowing the Decision Maker to evaluate, foresee and control the future environmental impact of Tourism through consultation, the management and the presentation of decision schemes based on defined measures of a regional tourism planning
Arte en la Escuela, en la Universidad, en la Calle: La Interfaz de los Cursos de Formación en Arte y la Extensión Académica
Este texto pretende uma reflexão a cerca da constitutividade dos cursos de formação em artes e suas interfacescom a extensão universitária. As considerações aqui tecidas ancoram-se nas perspectivas atuais do ensino daarte bem como da constituição da extensão enquanto parte do tripé que sustenta a universidade: Ensino -Pesquisa - Extensão. Apontamos que tais instâncias não são lineares nem tão pouco estanques, mas constituem-se mutuamente e colocam em movimento, sempre em relação à, o processo de construção do conhecimentoda/na sociedade.This text wants a reflection about the constitutividade of training courses in arts and interfaces with theuniversity extension. The considerations made here anchor on perspectives of the current teaching of art andthe formation of the extension as part of the tripod that claims the university: Education - Search - Extension.Indicate that such instances are not linear nor units but constitute each other and put in motion, always inrelation to the process of building knowledge on / in society.Este articulo es acerca de una reflexión sobre la constitutividad de los cursos de la formación en artes y susinterfaces com la extensión de la universidad. Las consideraciones aca tejidas son sustentadas por la percepciónde actuales de lo ensino de la arte asi como de la constitución de la extensión como parte de lo tripe quesustenta la universidad: Ensino - Investigacion - Extensión. Logramos que las estansias no son lineares nitampoco estañadas, pero se constituyen mutuamente y colocan en movimiento siempre en relación para, elproceso de construcción del conocimiento de la sociedad
Indentification of cancer stem-like cells in osteosarcoma and their implications in response to chemotherapy
Portable art and personal ornaments from Txina-Txina: a new later stone age site in the Limpopo River Valley, southern Mozambique
This paper reports on preliminary fieldwork at the Later Stone Age site of Txina-Txina in Mozambique. Excavation yielded a long stratigraphic sequence, a large lithic assemblage, a unique decorated gastropod shell fragment and two ostrich eggshell beadsthe first of their type recovered from a Stone Age context in Mozambique.Fundacao para a Ciencia e Tecnologia [PTDC/EPH-ARQ/4998/2012, PTDC/EPHARQ/4168/2014]; National Geographic Society [W373.15, HJ-033R-17
A potential signature for muscle-invasive tumors
Funding: This work was supported by the Astellas European Foundation Uro-Oncology Grant 2014; JABA RECORDATI Urology 2011 - Portuguese Society of Urology; Portuguese Foundation for Science and Technology (Strategic Project: PEst-C/SAU/UI3282/2013 and UID/NEU/04539/2013); GAI/FMUC and Santander Totta (Ref. FreitasGomes04.01.13) and Center of Investigation in Environment, Genetics and Oncobiology (CIMAGO), Portugal (Ref. 14/12). Margarida FerreiraTeixeira benefits from a PhD scholarship from the Portuguese Foundation for Science and Technology (Reference SFRH/BD/77314/2011).Striking evidence associates cancer stem cells (CSCs) to the high recurrence rates and poor survival of patients with muscle-invasive bladder cancer (BC). However, the prognostic implication of those cells in risk stratification is not firmly established, mainly due to the functional and phenotypic heterogeneity of CSCs populations, as well as, to the conflicting data regarding their identification based on a single specific marker. This emphasizes the need to exploit putative CSC-related molecular markers with potential prognostic significance in BC patients. This study aimed to isolate and characterize bladder CSCs making use of different functional and molecular approaches. The data obtained provide strong evidence that muscle-invasive BC is enriched with a heterogeneous stem-like population characterized by enhanced chemoresistance and tumor initiating properties, able to recapitulate the heterogeneity of the original tumor. Additionally, a logistic regression analysis identified a 2-gene stem-like signature (SOX2 and ALDH2) that allows a 93% accurate discrimination between non-muscle-invasive and invasive tumors. Our findings suggest that a stemness-related gene signature, combined with a cluster of markers to more narrowly refine the CSC phenotype, could better identify BC patients that would benefit from a more aggressive therapeutic intervention targeting CSCs population.publishersversionpublishe
Targeting p53 for melanoma treatment: counteracting tumour proliferation, dissemination and therapeutic resistance
Melanoma is the deadliest form of skin cancer, primarily due to its high metastatic propensity and therapeutic resistance in advanced stages. The frequent inactivation of the p53 tumour suppressor protein in melanomagenesis may predict promising outcomes for p53 activators in melanoma therapy. Herein, we aimed to investigate the antitumor potential of the p53-activating agent SLMP53-2 against melanoma. Two- and three-dimensional cell cultures and xenograft mouse models were used to unveil the antitumor activity and the underlying molecular mechanism of SLMP53-2 in melanoma. SLMP53-2 inhibited the growth of human melanoma cells in a p53-dependent manner through induction of cell cycle arrest and apoptosis. Notably, SLMP53-2 induced p53 stabilization by disrupting the p53–MDM2 interaction, enhancing p53 transcriptional activity. It also promoted the expression of p53-regulated microRNAs (miRNAs), including miR-145 and miR-23a. Moreover, it displayed anti-invasive and antimigratory properties in melanoma cells by inhibiting the epithelial-to-mesenchymal transition (EMT), angiogenesis and extracellular lactate production. Importantly, SLMP53-2 did not induce resistance in melanoma cells. Additionally, it synergized with vemurafenib, dacarbazine and cisplatin, and resensitized vemurafenib-resistant cells. SLMP53-2 also exhibited antitumor activity in human melanoma xenograft mouse models by repressing cell proliferation and EMT while stimulating apoptosis. This work discloses the p53-activating agent SLMP53-2 which has promising therapeutic potential in advanced melanoma, either as a single agent or in combination therapy. By targeting p53, SLMP53-2 may counteract major features of melanoma aggressiveness.This work received financial support from PT national funds (FCT/MCTES, Fundação para a Ciência e Tecnologia and Ministério da Ciência, Tecnologia e Ensino Superior) through
LAQV/REQUIMTE (UID/QUI/50006/2020), iMed.ULisboa (UIDB/04138/2020), and PTDC/QUIQOR/29664/2017, PTDC/MEC-ONC/32018/2017. We thank FCT for the fellowships SFRH/BD/
128673/2017 (J. Loureiro), 2020.04613.BD (J. Calheiros), PD/BD/143126/2019 (V. Barcherini)
A Comprehensive Review
Funding: This project has received funding from the European Unions’ Horizon 2020 research and innovation Programme under grant agreement No 733032. HBM4EU.Polycyclic aromatic hydrocarbons (PAHs) are among the chemicals with proven impact on workers' health. The use of human biomonitoring (HBM) to assess occupational exposure to PAHs has become more common in recent years, but the data generated need an overall view to make them more usable by regulators and policymakers. This comprehensive review, developed under the Human Biomonitoring for Europe (HBM4EU) Initiative, was based on the literature available from 2008-2022, aiming to present and discuss the information on occupational exposure to PAHs, in order to identify the strengths and limitations of exposure and effect biomarkers and the knowledge needs for regulation in the workplace. The most frequently used exposure biomarker is urinary 1-hydroxypyrene (1-OH-PYR), a metabolite of pyrene. As effect biomarkers, those based on the measurement of oxidative stress (urinary 8-oxo-dG adducts) and genotoxicity (blood DNA strand-breaks) are the most common. Overall, a need to advance new harmonized approaches both in data and sample collection and in the use of appropriate biomarkers in occupational studies to obtain reliable and comparable data on PAH exposure in different industrial sectors, was noted. Moreover, the use of effect biomarkers can assist to identify work environments or activities of high risk, thus enabling preventive risk mitigation and management measures.publishersversionpublishe
Patient-physician discordance in assessment of adherence to inhaled controller medication: a cross-sectional analysis of two cohorts
We aimed to compare patient's and physician's ratings of inhaled medication adherence and to identify predictors of patient-physician discordance.(SFRH/BPD/115169/2016) funded by Fundação
para a Ciência e Tecnologia (FCT); ERDF (European Regional
Development Fund) through the operations: POCI-01-0145-FEDER-029130
('mINSPIRERS—mHealth to measure and improve adherence to medication
in chronic obstructive respiratory diseases—generalisation and evaluation
of gamification, peer support and advanced image processing technologies')
cofunded by the COMPETE2020 (Programa Operacional Competitividade e
Internacionalização), Portugal 2020 and by Portuguese Funds through FCT
(Fundação para a Ciência e a Tecnologia).info:eu-repo/semantics/publishedVersio
- …