3,955 research outputs found
Purchase management improvement in a TV company from the industry district of Manaus (PIM)
All rights reserverd. Continuous improvement in quality of products and processes offered by an organization can support companies keep it long in this competitive and dynamic business environment. Therefore, the interaction between the university, government, and Industry (the triple helix) is the opportunity for a Technology Company as TV’s industry to have innovation and new studies developed frequently. This research, studies the improvements of material purchases process to increase knowledge in the TV Purchasing Department inside an Industry from the Industrial District of Manaus, Brazil (PIM) which deals with high technology on their products and must have agility to be the first option to the customers. During the research a checklist was applied to employees from purchasing department and was observed that there was a frequent participation from quality sector in the resolution of the procurement process and that has proven to be positive in the management process. These are facilitators on a daily developers, customers and suppliers.This work has been supported by COMPETE: POCI-01-0145-FEDER-007043 and FCT – The Foundation for Science and Technology within the Project Scope: UID/CEC/00319/2013.info:eu-repo/semantics/publishedVersio
Information organization and production planning improvement in a clothes company in Portugal
In this paper we followed a qualitative research methodology through a case study, incorporating interviews with institutional actors involved (university, industry and government) in the cooperation project. Although this study is limited to a case study, however, highlight the importance of Triple Helix networks in order to develop the research presents a proposal for improvement for the first methodology of medium-sized textile company to address the modelling conceptual planning, production and control. In order to develop the research, development and innovation with the use of study methods which are: Planning and Production Control (PPC), master Production Planning (MPS), Materials Requirement Planning (MRP) Material, Capacity Planning using Global Factors (CPOF), and Capacity Requirement Planning (CRP). Through the practical perspective of a case study of Triple Helix successful cooperation, we were able to develop the cases considered to be studied on the organization and the production of information for structuring an improvement of data necessary to implement the methods of planning and selected information within the company.This work has been supported by COMPETE: POCI-01-0145-FEDER-007043 and FCT – The Foundation for Science and Technology within the Project Scope: UID/CEC/00319/2013.info:eu-repo/semantics/publishedVersio
Microalgae-based unsaponifiable matter as source of natural antioxidants and metal chelators to enhance the value of wet Tetraselmis chuii biomass
The present work aimed to determine the antioxidant, metal chelating and neuroprotective potential of the unsaponifiable matter (UM) of Tetraselmis chuii to be applied to a biorefinery setting. The UM obtained via saponification from crude lipids extracted from microalgal wet biomass showed a radical scavenging activity (RSA) towards the DPPH radical of 90.7 +/- 1.3% and 57.1 +/- 1.2% at a concentration of 10 and 5 mg/ mL, respectively. The UM fraction also displayed metal chelating capacity at a concentration of 5 mg/ mL: 58.5 +/- 1.4% and 50.9 +/- 4.0% for copper and iron, respectively. The chemical characterization of the UM revealed significant levels of total phenolics (TPC, 13.61 mg GAE/g) and carotenoids (2.45 mg/g of beta-carotene, lutein and violaxanthin). Overall, the separation of the UM containing high value metabolites might significantly upgrade the total wet biomass value in a biorefinery, allowing the exploitation of a stream with relevant antioxidant and metal chelating activities.SFRH/BD/105541/2014, IF/00049/2012, CCMAR/Multi/04326/2013info:eu-repo/semantics/publishedVersio
Thickness dependence of the exchange bias in epitaxial manganite bilayers
Exchange bias has been studied in a series of La2/3Ca1/3MnO3 / La1/3Ca2/3MnO3
bilayers grown on (001) SrTiO3 substrates by ozone-assisted molecular beam
epitaxy. The high crystalline quality of the samples and interfaces has been
verified using high-resolution X-ray diffractometry and Z-contrast scanning
transmission electron microscopy with electron energy loss spectroscopy. The
dependence of exchange bias on the thickness of the antiferromagnetic layer has
been investigated. A critical value for the onset of the hysteresis loop shift
has been determined. An antiferromagnetic anisotropy constant has been obtained
by fitting the results to the generalized Meiklejohn-Bean model.Comment: 7 pages. 8 figure
Acute Intermittent Porphyria in a Man with Dual Enzyme Deficiencies
Porphyrias are a heterogeneous group of metabolic disorders that result from the altered activity of specific enzymes of the hemebiosynthetic pathway and are characterized by accumulation of pathway intermediates. Porphyria cutanea tarda (PCT) is the mostcommon porphyria and is due to deficient activity of uroporphyrinogen decarboxylase (UROD). Acute intermittent porphyria(AIP) is the most common of the acute hepatic porphyrias, caused by decreased activity of hydroxymethylbilane synthase(HMBS). An Argentinean man with a family history of PCT who carried the UROD variant c.10_11insA suffered severe abdominalpain. Biochemical testing was consistent with AIP, and molecular analysis of HMBS revealed a de novo variant:c.344 + 2_ + 5delTAAG. *is is one of the few cases of porphyria identified with both UROD and HMBS mutations and the firstconfirmed case of porphyria with dual enzyme deficiencies in Argentina.Fil: Cerbino, Gabriela Nora. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Centro de Investigaciones sobre Porfirinas y Porfirias. Universidad de Buenos Aires. Centro de Investigaciones sobre Porfirinas y Porfirias; ArgentinaFil: Abou Assali, Lubna. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Centro de Investigaciones sobre Porfirinas y Porfirias. Universidad de Buenos Aires. Centro de Investigaciones sobre Porfirinas y Porfirias; ArgentinaFil: Varela, Laura Sabina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Centro de Investigaciones sobre Porfirinas y Porfirias. Universidad de Buenos Aires. Centro de Investigaciones sobre Porfirinas y Porfirias; ArgentinaFil: Tomassi, L.. Gobierno de la Ciudad de Buenos Aires. Hospital General de Agudos "Ramos Mejía"; ArgentinaFil: Batlle, Alcira Maria del C.. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Centro de Investigaciones sobre Porfirinas y Porfirias. Universidad de Buenos Aires. Centro de Investigaciones sobre Porfirinas y Porfirias; ArgentinaFil: Parera, Victoria Estela. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Centro de Investigaciones sobre Porfirinas y Porfirias. Universidad de Buenos Aires. Centro de Investigaciones sobre Porfirinas y Porfirias; ArgentinaFil: Rossetti, Maria Victoria. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Centro de Investigaciones sobre Porfirinas y Porfirias. Universidad de Buenos Aires. Centro de Investigaciones sobre Porfirinas y Porfirias; Argentin
Virtual Enterprise integration management based on a Meta-enterprise - A PMBoK approach
A Virtual Enterprise (VE) can be viewed as a project, with a lifecycle corresponding to the period between its creation and integration of the constituting elements until its dissolution, comprehending its operation and including its reconfigurations. The authors propose that the VE lifecycle is aligned and can be managed using the frameworks provided by several bodies of knowledge, such as the PMBoK Guide. In this paper the authors propose an alignment referential between the Project Management phases defined by PMBoK and management processes during the VE lifecycle.This work has been supported by (1) COMPETE: POCI-01-0145-FEDER-007043 (2) FCT – Fundação para a Ciência e Tecnologia within the Project Scope: UID/CEC/00319/2013.info:eu-repo/semantics/publishedVersio
Vitamin food fortification today
Historically, food fortification has served as a tool to address population-wide nutrient deficiencies such as rickets by vitamin D fortified milk. This article discusses the different policy strategies to be used today. Mandatory or voluntary fortification and fortified foods, which the consumer needs, also have to comply with nutritional, regulatory, food safety and technical issues. The ‘worldwide map of vitamin fortification’ is analysed, including differences between develop and developing countries. The vitamins, folate and vitamin D, are taken as practical examples in the review of the beneficial effect of different strategies on public health. The importance of the risk–benefit aspect, as well as how to identify the risk groups, and the food vehicles for fortification is discussed
Selective Fractionation And Isolation Of Allelopathic Compounds From Helianthus Annuus L. Leaves By Means Of High-Pressure Techniques
The allelopathic potential of Helianthus annuus L. leaves was study based on bio-directed chemical fractionation approach. Aerial parts of H. annuus were extracted by means of SFE using supercritical carbon dioxide (scCO2) and ESE using CO2+50% EtOH/H2O (varying ethanol in water from 0 to 100%). Extractions were carried out at 400 bar, 55 °C, 20 g/min and for 4 h. Then, extracts were fractionated in three separators at the following conditions: S1: 200 bar/45 °C; S2: 90 bar/40 °C; and S3: 1 atm/30 °C. ESE obtained higher overall yields than scCO2 and the use of water as cosolvent (CO2+50% H2O) resulted in a S3 fraction free from chlorophylls and rich in bioactive compounds. 14 compounds, including fatty acids, terpenes, flavonoids and heliannuols, were isolated from this fraction. After performing the bioassay on pure compounds, heliannuol D, tambulin, pinoresinol and sesquiterpene 10-oxo-isodauc-3-en-15-al showed the most effective inhibitor profiles
Current Approaches for Glioma Gene Therapy and Virotherapy
Glioblastoma (GBM) is the most common and aggressive primary brain tumor in the adult population and it carries a dismal prognosis. Inefficient drug delivery across the blood brain barrier (BBB), an immunosuppressive tumor microenvironment (TME) and development of drug resistance are key barriers to successful glioma treatment. Since gliomas occur through sequential acquisition of genetic alterations, gene therapy, which enables to modification of the genetic make-up of target cells, appears to be a promising approach to overcome the obstacles encountered by current therapeutic strategies. Gene therapy is a rapidly evolving field with the ultimate goal of achieving specific delivery of therapeutic molecules using either viral or non-viral delivery vehicles. Gene therapy can also be used to enhance immune responses to tumor antigens, reprogram the TME aiming at blocking glioma-mediated immunosuppression and normalize angiogenesis. Nano-particles-mediated gene therapy is currently being developed to overcome the BBB for glioma treatment. Another approach to enhance the anti-glioma efficacy is the implementation of viro-immunotherapy using oncolytic viruses, which are immunogenic. Oncolytic viruses kill tumor cells due to cancer cell-specific viral replication, and can also initiate an anti-tumor immunity. However, concerns still remain related to off target effects, and therapeutic and transduction efficiency. In this review, we describe the rationale and strategies as well as advantages and disadvantages of current gene therapy approaches against gliomas in clinical and preclinical studies. This includes different delivery systems comprising of viral, and non-viral delivery platforms along with suicide/prodrug, oncolytic, cytokine, and tumor suppressor-mediated gene therapy approaches. In addition, advances in glioma treatment through BBB-disruptive gene therapy and anti-EGFRvIII/VEGFR gene therapy are also discussed. Finally, we discuss the results of gene therapy-mediated human clinical trials for gliomas. In summary, we highlight the progress, prospects and remaining challenges of gene therapies aiming at broadening our understanding and highlighting the therapeutic arsenal for GBM.Fil: Banerjee, Kaushik. University of Michigan; Estados UnidosFil: Núñez Aguilera, Felipe Javier. Fundación Instituto Leloir; ArgentinaFil: Haase, Santiago. University of Michigan; Estados UnidosFil: McClellan, Brandon L.. University of Michigan; Estados UnidosFil: Faisal, Syed M.. University of Michigan; Estados UnidosFil: Carney, Stephen V.. University of Michigan; Estados UnidosFil: Yu, Jin. University of Michigan; Estados UnidosFil: Alghamri, Mahmoud S.. University of Michigan; Estados UnidosFil: Asad, Antonela Sofía. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Biomédicas. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones Biomédicas; ArgentinaFil: Nicola Candia, Alejandro Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Biomédicas. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones Biomédicas; ArgentinaFil: Varela, Maria Luisa. University of Michigan; Estados UnidosFil: Candolfi, Marianela. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Biomédicas. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones Biomédicas; ArgentinaFil: Lowenstein, Pedro R.. University of Michigan; Estados UnidosFil: Castro, Maria G.. University of Michigan; Estados Unido
SEOM clinical guideline in ovarian cancer (2020)
Despite remarkable advances in the knowledge of molecular biology and treatment, ovarian cancer remains the leading cause of death from gynecologic cancer. In the last decade, there have been important advances both in systemic and surgical treatment. However, there is no doubt that the incorporation of PARP inhibitors as maintenance after the response to platinum-based chemotherapy, first in recurrent disease and recently also in first line, will change the natural history of the disease. The objective of this guide is to summarize the current evidence for the diagnosis, treatment, and follow-up of ovarian cancer, and to provide evidence-based recommendations for clinical practice
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