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Search Results: 1 - 10 of 77772 matches for " Maria Teresa Palumbo "
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Open Mass Cultures of Marine Microalgae for Biodiesel Production: Laboratory Approach to Study Species Competition in Mixed Cultures  [PDF]
Marina Mingazzini, Maria Teresa Palumbo
Natural Resources (NR) , 2015, DOI: 10.4236/nr.2015.63016
Abstract: Since the interspecific competition represents a critical issue for biodiesel production in open mass cultures of microalgae, laboratory studies aimed to select competitive species receive significant interest. In this work, a laboratory approach based on the method of multisizing cell counting was developed to monitor the competition course of single algal species grown in mixed cultures. Two marine microalgae, Dunaliella tertiolecta and Phaeodactylum tricornutum, were used to set-up an induced-contamination assay, with the aim to test their competitive capabilities. The evaluation of the oil production by dried biomass extraction was coupled to the growth assay to investigate the effect of competition on oil yield. The adopted experimental approach revealed effective as a method to selectively measure the algal growth of single species in mixed cultures, enabling to evaluate the competitive properties of Dunaliella outgrowing the contaminant species Phaeodactylum. At the end of the experiment the dominant species contributed more than 90% to the total biomass, while no loss of oil production was observed, the oil yield in the mixed being even higher than in the unialgal culture (3.15 vs. 2.28 mg). The outcomes of the induced competition suggest the use of Dunaliella as a competitive oil-producer species and especially support the potential of the experimental approach to be used for preliminary screening to drive species selection for open mass cultures.
A novel deletion in 2q24.1q24.2 in a girl with mental retardation and generalized hypotonia: a case report
Orazio Palumbo, Pietro Palumbo, Teresa Palladino, Raffaella Stallone, Leopoldo Zelante, Massimo Carella
Molecular Cytogenetics , 2012, DOI: 10.1186/1755-8166-5-1
Abstract: here we report on a girl with mental retardation and generalized hypotonia. A genome-wide screen for copy number variations (CNVs) using single nucleotide polymorphisms (SNPs) array revealed a 7.5 Mb interstitial deletion of chromosome region 2q24.1q24.2 encompassing 59 genes, which was absent in parents. The gene content analysis of the deleted region and review of the literature revealed the presence of some genes that may be indicated as good candidate in generating the main clinical features of the patient.the present case represents a further patient described in the literature with an interstitial deletion of chromosome 2q24.1q24.2. Our patient shares some clinical features with the previously reported patients carriers of overlapping 2q24 deletion. Although more cases are needed to delineate the full-blown phenotype of 2q24.1q24.2 deletion syndrome, published data and present observation suggest that hemizygosity of this region results in a clinically recognizable phenotype. Considering these clinical and cytogenetic similarities, we suggest the existence of an emerging syndrome associated to 2q24.1q24.2 region.Conventional cytogenetic analysis have identified more than 100 individuals with constitutional deletion within 2q. In particular, over 70 patients with a terminal deletion and over 30 with an interstitial deletion have already been reported [1,2]. Most of the examined patients presented a mental retardation varying between severe and profound, hypotonia and dysmorphic features. Phenotype variations are likely to be due to differences in the size and location of the segmental aneuploidy. The most frequent interstitial deletion involves the cytogenetic bands 2q31q33 and corresponds to a specific phenotype [3,4]. Only few cases showed overlapping deletions, although of quite different extensions, and most of the reported cases with 2q interstitial deletion have been detected with standard cytogenetic techniques showing poor definition of breakpoints. Thu
Legal Concepts and Multilingual Contexts in Digital Information  [PDF]
Daniela Tiscornia, Maria Teresa Sagri
Beijing Law Review (BLR) , 2012, DOI: 10.4236/blr.2012.33010
Abstract: Analysis of legal documents cannot be reduced to their linguistic expression. When dealing whit legal texts a distinction should be made between the linguistic form (normative statement) and the content (norm). Norms are conceived as the interpreted meaning of linguistic contexts (partitions in a legal text, fragments of judicial decisions, etc). In the interpretative process, legal practitioners make reference to an external system of concepts that can be assumed, even if not universal, at least shared by a large social and cultural community. As a consequence, legal interpretation and legal conceptualization are strongly influenced by cultural, social and political factors and changes in meaning of legal concepts occur within a synchronic localization in different cultures and within a diachronic evolution process of the environment in which they are created. This dynamic nature of legal knowledge poses serious problems in communicating legal information, and even more in the realm of digital communication, where, in order to manage knowledge across national borders, there is a strong demand of shared vocabularies embedding a shared understanding of legal concept. This paper aims at showing how lexical/terminological resources and conceptual structures, such as ontologies, can be constructed by means of the innovative tools provided by ICT, like the Semantic Web languages, the computational linguistic and the ontology engineering techniques. Such semantic resources may have a strategic role in representing meaning evolution and in investigating social and cultural influences in linguistic uses and, as a further goal, solutions offered by ICT for bridging the gap between form and content can also provide innovative visions of theoretical issues.
Seawater Intrusion and Salinization Processes Assessment in a Multistrata Coastal Aquifer in Italy  [PDF]
Giuseppe Sappa, Maria Teresa Coviello
Journal of Water Resource and Protection (JWARP) , 2012, DOI: 10.4236/jwarp.2012.411111
Abstract: This paper presents the results of the investigations, driven by different techniques, including environmental tracers and geophysical methods, in the aim of better understand the causes of the current salt-water intrusion in the Pontina Plain, in the south of the Lazio Region (Italy). In the last 50 years many investigation campaigns have been carried out to evaluate the evolution of salt-water intrusion. This is an area with a strong man-made residential and tourist impact and, in the some cases, it is characterized by intensive agricultural practices. Therefore, it can be affected not only by salt-water intrusion, but by the salinization of its groundwater also due to other factors. All these factors have led the Pontina Plain to a groundwater situation which makes the groundwater resource management and the planning of their future exploitation very difficult.
Mindfulness for Disabled University Students—A Sporting-Motor Activity and Meditative Workshop Aimed at Reducing Stress and Increasing Coping Resources  [PDF]
Giulia Savarese, Maria Teresa Ingino
Psychology (PSYCH) , 2018, DOI: 10.4236/psych.2018.914164
Abstract: The data collected from disabled university students who participated in a mindfulness workshop in Italy are presented. The workshop activities are also described. These were aimed at reducing stress and improving coping skills, the sense of self and social relationships. This is the first experience of a mindfulness course with university students with varying types of disability. The initial results were positive in creating the following within the participants: a less emotional interpretation of the world; a greater acceptance of their own difficulties; reduced stress; and, at the same time, implementation of various coping methods and improved self-esteem and social interaction.
Biological Therapy and Risk of Malignancies: A Literature Review  [PDF]
Gilda Sandri, Valentina Cestelli, Maria Teresa Mascia
Journal of Cancer Therapy (JCT) , 2013, DOI: 10.4236/jct.2013.43A056
Abstract: Data from literature show that the overall risk of cancer does not as a result from treatment with these drugs. The only cancer for which various authors have reported an increased risk, in some cases, are skin cancers, different from melanoma and melanoma. Recent results of large observational studies and meta-analyzes indicate the absence of an increased risk of lymphoma related to therapy with anti-TNF-α. It has been reported, by some authors, that there is a possible increased risk of lung cancer, especially in patients with chronic obstructive pulmonary disease. There is limited information in literature about the effects of biologics in patients with a history of cancer. Most of the guidelines indicate that treatment with biologics can be considered with caution and only in patients free of cancer since at least 5 years. Some studies report a lower oncological risk with etanercept compared to monoclonal antibodies, especially in the case of lymphoma. However, this data has not been confirmed in other studies, and has been associated with a limited period of time after starting therapy. Information about the latest biological therapies is still poor. Therefore, there is not sufficient evidence for a preferential use of certain drugs rather than others.
Addressing Healthcare Needs in Older People after Discharge  [PDF]
Maria Grazia Proietti, Teresa Compagnone, Giuseppe Liotta
Advances in Aging Research (AAR) , 2014, DOI: 10.4236/aar.2014.33035
Abstract:

Healthcare needs should be addressed even when patients return home. The purpose of this study was to support a multidimensional assessment upon discharge to plan domiciliary care. Materials and Methods: This is a multicentre cross-sectional study that uses the Geriatric Functional Assessment questionnaire to assess healthcare needs. The questionnaire was administered upon discharge to 358 people aged over 65. Results: About 20% of our sample required healthcare support after discharge and 32% needed some sort of supervision. Most of the healthcare requirements involved socio-economic needs, neurological diseases, and inability to autonomously perform instrumental activities of daily living. Discussion: It is crucial to have an optimal discharge plan for older inpatients. Nurses play a key role in managing the care continuum process, and they have the instruments to select those requiring “supported discharge”, and collaborate with district nurses who can arrange healthcare interventions jointly with other professionals. They can facilitate access to resources, medical devices and aids required to restore patient autonomy.

Sensory Perceptions of Virgin Olive Oil: New Panel Evaluation Method and the Chemical Compounds Responsible  [PDF]
Diana De Santis, Maria Teresa Frangipane
Natural Science (NS) , 2015, DOI: 10.4236/ns.2015.73015
Abstract: The stimulation of the human sensory receptors by compounds present in virgin olive oils (VOOs) gives rise to the sensory attributes that describe its particular aroma. The sensor panel evaluation and the molecules responsible for sensory perceptions of virgin olive oil quality are elucidated. The methodology for the evaluation of the sensory characteristics of VOOs is reported, and typical flavours and off-flavours are described. Relationships between chemical compounds and sensory characteristics are evaluated using the new sensory analyses method promoted by the International Olive Oil Council (IOOC) and included recently in EU regulation (Reg. 1348/2013 and following revisions). Oil quality may be defined in a number of ways, but the sensory perception of flavour is the ultimate determinant.
Let Some Unforeseen Knowledge Emerge from Heterogeneous Documents  [PDF]
Maria Teresa Pazienza, Armando Stellato, Andrea Turbati
Journal of Computer and Communications (JCC) , 2016, DOI: 10.4236/jcc.2016.46001
Abstract: Data production and exchange on the Web grows at a frenetic speed. Such uncontrolled and exponential growth pushes for new researches in the area of information extraction as it is of great interest and can be obtained by processing data gathered from several heterogeneous sources. While some extracted facts can be correct at the origin, it is not possible to verify that correlations among the mare always true (e.g., they can relate to different points of time). We need systems smart enough to separate signal from noise and hence extract real value from this abundance of content accessible on the Web. In order to extract information from heterogeneous sources, we are involved into the entire process of identifying specific facts/events of interest. We propose a gluing architecture, driving the whole knowledge acquisition process, from data acquisition from external heterogeneous resources to their exploitation for RDF trip lification to support reasoning tasks. Once the extraction process is completed, a dedicated reasoner can infer new knowledge as a result of the reasoning process defined by the end user by means of specific inference rules over both extracted information and the background knowledge. The end user is supported in this context with an intelligent interface allowing to visualize either specific data/concepts, or all information inferred by applying deductive reasoning over a collection of data.
Nitric Oxide Mediates the Stress Response Induced by Diatom Aldehydes in the Sea Urchin Paracentrotus lividus
Giovanna Romano, Maria Costantini, Isabella Buttino, Adrianna Ianora, Anna Palumbo
PLOS ONE , 2011, DOI: 10.1371/journal.pone.0025980
Abstract: Diatoms are ubiquitous and abundant primary producers that have been traditionally considered as a beneficial food source for grazers and for the transfer of carbon through marine food webs. However, many diatom species produce polyunsaturated aldehydes that disrupt development in the offspring of grazers that feed on these unicellular algae. Here we provide evidence that production of the physiological messenger nitric oxide increases after treatment with the polyunsaturated aldehyde decadienal in embryos of the sea urchin Paracentrotus lividus. At high decadienal concentrations, nitric oxide mediates initial apoptotic events leading to loss of mitochondrial functionality through the generation of peroxynitrite. At low decadienal concentrations, nitric oxide contributes to the activation of hsp70 gene expression thereby protecting embryos against the toxic effects of this aldehyde. When nitric oxide levels were lowered by inhibiting nitric oxide synthase activity, the expression of hsp70 in swimming blastula decreased and the proportion of abnormal plutei increased. However, in later pluteus stages nitric oxide was no longer able to exert this protective function: hsp70 and nitric oxide synthase expression decreased with a consequent increase in the expression of caspase-8. Our findings that nitric oxide production increases rapidly in response to a toxic exogenous stimulus opens new perspectives on the possible role of this gas as an important messenger to environmental stress in sea urchins and for understanding the cellular mechanisms underlying toxicity during diatom blooms.
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