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Search Results: 1 - 10 of 26535 matches for " Fernando Guido;Volpe "
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Efeitos de geada no desenvolvimento do feijoeiro em sucess?o a espécies vegetais e aduba??o nitrogenada
Farinelli, Rogério;Fornasieri Filho, Domingos;Bordin, Luciano;Penariol, Fernando Guido;Volpe, Clóvis Alberto;
Bragantia , 2010, DOI: 10.1590/S0006-87052010000100031
Abstract: the objective this work was verify the effect of frost in development of common bean in experimentation succession cover crops and nitrogen fertilization. the experimental design used was the randomized blocks in split-plot design, with four replications. the plots were represented by species sorghum bicolor guinea type, canavalia brasiliensis, sorghum bicolor, crotalaria juncea, pennisetum glaucum and witness maintained "clean"; the sub parcels by doses of nitrogen applied in topdressing (0, 25, 50, and 75 kg ha-1 of n), being used urea as source of n. less damages and severity of the frost were observed in bean plants grown after the species canavalia brasiliensis and crotalaria juncea, due to the least amount of residual dry mass in relation to the grasses crop. higher yields of common bean after the frost were obtained with crotalaria juncea and canavalia brasiliensis and with application of doses between 44.5 and 52.0 kg ha-1 of n in topdressing
Correlation of Cesarean rates to maternal and infant mortality rates: an ecologic study of official international data
Volpe,Fernando Madalena;
Revista Panamericana de Salud Pública , 2011, DOI: 10.1590/S1020-49892011000500001
Abstract: objective: to correlate international official data on cesarean delivery rates to infant and maternal mortality rates and low weight-at-birth rates; and to test the hypothesis that cesarean rates greater than 15% correlate to higher maternal and infant mortality rates. methods: analyses were based on the most recent official data (2000-2009) available for 193 countries. exponential models were compared to quadratic models to regress infant mortality rates, neonatal mortality rates, maternal mortality rates, and low weight-at-birth rates to cesarean rates. separate regressions were performed for countries with cesarean rates greater than 15%. results: in countries with cesarean rates less than 15%, higher cesarean rates were associated to lower infant, neonatal, and maternal mortality rates, and to lower rates of low weightat-birth. in countries with cesarean rates greater than 15%, cesarean rates were not significantly associated with infant or maternal mortality rates. conclusions: there is an inverse exponential relation between countries' rates of cesarean deliveries and infant or maternal mortality rates. very low cesarean rates (less than 15%) are associated with poorer maternal and child outcomes. cesarean rates greater than 15% were neither correlated to higher maternal nor child mortality, nor to low weight-at-birth.
Naturalistic evaluation of inpatient treatment of mania in a private Brazilian psychiatric hospital
Volpe, Fernando Madalena;Tavares, Almir;Correa, Humberto;
Revista Brasileira de Psiquiatria , 2003, DOI: 10.1590/S1516-44462003000200005
Abstract: objective: to describe the clinical practices on the treatment of mania in a brazilian hospital, and to compare them to other international similar reports and practice guidelines. methods: chart revision of 425 consecutive admissions (269 patients) for the treatment of manic or mixed episodes (icd-10 criteria) in a private psychiatric hospital of belo horizonte, brazil, from 1996 to 2000. the rates of utilization of each antimanic medication and ect were compared to those reported in similar international observational studies (x2, bicaudate, alpha =0.05). results: the observed frequencies of use of each treatment modality were: lithium (71.5%); carbamazepine (34.8%); valproate (9.4%); antipsychotics (83.3%); benzodiazepines (62.4%); antidepressants (7.5%) and ect (33.2%). the differences detected between local practice and international guidelines were: lower rate of valproate and higher rate of carbamazepine prescription; the use of sine wave devices for ect; frequent concomitant use of ect with lithium (72.3%), benzodiazepines (46.8%) and/or carbamazepine (31.2%). conclusion: these results suggest the need to develop national practice guidelines for the treatment of mania and for the use of ect, and to promote their propagation through specific medical educational programs, aiming at the standardization of practices based on the available scientific evidence.
Naturalistic evaluation of inpatient treatment of mania in a private Brazilian psychiatric hospital
Volpe Fernando Madalena,Tavares Almir,Correa Humberto
Revista Brasileira de Psiquiatria , 2003,
Abstract: OBJECTIVE: To describe the clinical practices on the treatment of mania in a Brazilian hospital, and to compare them to other international similar reports and practice guidelines. METHODS: Chart revision of 425 consecutive admissions (269 patients) for the treatment of manic or mixed episodes (ICD-10 criteria) in a private psychiatric hospital of Belo Horizonte, Brazil, from 1996 to 2000. The rates of utilization of each antimanic medication and ECT were compared to those reported in similar international observational studies (X2, bicaudate, alpha =0.05). RESULTS: The observed frequencies of use of each treatment modality were: lithium (71.5%); carbamazepine (34.8%); valproate (9.4%); antipsychotics (83.3%); benzodiazepines (62.4%); antidepressants (7.5%) and ECT (33.2%). The differences detected between local practice and international guidelines were: lower rate of valproate and higher rate of carbamazepine prescription; the use of sine wave devices for ECT; frequent concomitant use of ECT with lithium (72.3%), benzodiazepines (46.8%) and/or carbamazepine (31.2%). CONCLUSION: These results suggest the need to develop national practice guidelines for the treatment of mania and for the use of ECT, and to promote their propagation through specific medical educational programs, aiming at the standardization of practices based on the available scientific evidence.
A Theoretical Overview of Bioresponse to Magnetic Fields on the Earth’s Surface  [PDF]
Pietro Volpe
International Journal of Geosciences (IJG) , 2014, DOI: 10.4236/ijg.2014.510097
Abstract: This survey points to the mechanisms of bioresponse caused by magnetic fields (MFs), paying attention to their action not only on ions, molecules and macromolecules, but also on cells, tissues and organisms. The significance of findings concerning the MF-dependence of cell proliferation, necrosis or apoptosis was judged by comparing the results obtained in a solenoid, where an MF can be added to the geomagnetic field (GMF), with those obtained in a magnetically shielded room, where the MFs can be attenuated or null. This comparative criterion was particularly appropriate when the differences detectable between the data provided by experimental samples and the data provided by control samples were rather small, as observed in estimating the MF-influence on total DNA replication, RNA transcription and polypeptide translation. The MF-induced inhibition of apoptosis was considered as a risk potentially leading to accumulation of cancer cells. The analysis also surveyed the MF-dependence of the interactions between host animal cells and infecting bacteria. In relation to studies on the origin and adaptation of life on the Earth, theoretical insights paving the way to elucidating the MF-interactions with biostructures and biosystems of different orders of organization evaluated the possible involvement of the so-called “biological windows”. Analogously to what is known for ionizing radiations, the efficiency of the applied MFs appeared to depend on the complexity of their biological targets.
The Unexpected Existence of Coding and Non-Coding Fragments along the Eukaryotic Gene  [PDF]
Pietro Volpe
Advances in Biological Chemistry (ABC) , 2015, DOI: 10.4236/abc.2015.52009
Abstract: The pathways leading to synthesis and post-synthetic modification of DNA employed methionine as donor of atoms: the carbon that came from its –CH3 served for DNA replication and repair either in bacteria or humans; its entire –CH3 served instead for building N6-methyladenine and 5-methylcytosine on bacterial DNA and 5-methylcytosine alone on human DNA. In humans, although a slight extra-S asymmetric methylation appeared de novo yielding on parental DNA 5’-m5CpC-3’/ 3’-GpG-5’, 5’-m5CpT-3’/3’-GpA-5’ and 5’-m5CpA-3’/3’-GpT-5’ monomethylated dinucleotide pairs, a heavy symmetric methylation involved in S semiconservatively newly made DNA to guarantee genetic maintenance of –CH3 in 5’-m5CpG-3’/3’-Gpm5C-5’ dimethylated dinucleotide pairs. In this framework, an inverse correlation was found between bulk genomic DNA methylation occurring in S and bulk polyA-containing pre-mRNA transcription taking place in G1 and G2. Thus, probes of 1 × 106 Daltons (constructed using sheared by sonication newly made methylated DNA filaments) revealed a modular organization in genes: after the hypermethylated promoter, they exhibited an alternation of unmethylated coding and methylated uncoding sequences. This encouraged the search for a language that genes regulated by methylation should have in common. An initial deciphering of restriction minimaps with hypomethylatable exons vs. hypermethylatable promoters and introns was improved when the bisulfite technique allowed a direct sequencing of m5C. In lymphocytes, where the transglutaminase gene is inactive, its promoter exhibited two fully methylated CpG-rich domains at 5’ and one fully unmethylated CpG-rich domain at 3’, including the site +1 and a 5’-UTR. At variance, in HUVEC cells, where the transglutaminase gene is active, in the first CpG-rich domain of promoter few doublets lost their –CH3. Such an inverse correlation suggested new hypotheses especially in connection with repair-modification: UV radiation would cause demethylation in given loci of a promoter by chance, whilst even a partial demethylation in this promoter would be able to resume a previously silent pre-mRNA transcription.
Efeito da manobra de Epley na qualidade de vida dos pacientes com vertigem posicional paroxística benigna
Pereira, Alcione Botelho;Santos, Juliana Nunes;Volpe, Fernando Madalena;
Brazilian Journal of Otorhinolaryngology , 2010, DOI: 10.1590/S1808-86942010000600006
Abstract: quality of life (qol) is significantly impaired by vertigo. the effect of specific treatments on qol deserves investigation. aim: to assess the effect of repositioning maneuvers on the qol of benign paroxysmal positioning vertigo (bppv) patients. materials and methods: a retrospective study design consiting of reviews of charts of bppv patients in a vestibular rehabilitation unit at a teaching institution in belo horizonte, mg, brazil, from 2007 to 2008. pre- and post-therapy (epley's repositioning maneuver) scores on the physical, functional and emotional dimensions of the dizziness handicap inventory (dhi) were analyzed. results: twenty-one patients were included, eighteen (86%) were females; the average age was 53.2 years. ten patients presented bilateral bppv; in eleven it was unilateral. the mean interval between assessments (pre- and post-treatment) was 21 days. the average number of required maneuvers was 2.3 (±1.1). pre-treatment dhi results showed a significant impact of bppv on quality of life. initial scores for physical (17.5), functional (17.3), emotional (13.2) dimensions decreased with therapy: respectively 3.7, 3.9, and 3.2 (p<0.001). conclusion: in the present sample, epley's maneuver had a positive and significant effect on emotional, physical and functional dimensions of quality of life, as measured by the dhi scores before and after therapy.
ICT and Inclusion in Higher Education: A Comparative Approach  [PDF]
Valentina Della Volpe
Open Journal of Social Sciences (JSS) , 2015, DOI: 10.4236/jss.2015.39007
Abstract:

The following research describes an attempt to combine ICT and Special Education through an inclusive pedagogical perspective. It examines how an innovative use of Information and Communication Technology can help create inclusive environments on the web. Specifically, the study focuses on the way the University responds to diversity and to e-inclusion through some development phases of an experimental research project, which is most far-reaching called “Network@ccessible: teaching/learning together and for everyone in a life project” carried out by six Italian universities and research institutions, from 2009 to 2014, and involved 1174 students (1.6% disabled students). This study is split into two main parts: 1) description and analysis of the data collected following the administration of an inquiry tool, developed to detect the climate experienced by the students involved in the online working groups; 2) investigation and detection of the elements of change that can encourage the process of inclusion in online learning environments to acquire credits allocated to the university courses. This study proposes further research to take place in the area of inclusive online university courses.

A Research of the Environmental and Social Effects of the Adoption of Biotechnological Practices for Soybean Cultivation in Argentina  [PDF]
Guido Fernando Botta, Alfredo Tolón-Becerra, Xavier Lastra-Bravo, Mario Cesar Tourn
American Journal of Plant Sciences (AJPS) , 2011, DOI: 10.4236/ajps.2011.23041
Abstract: In recent years, the excessive and unregulated implementation of biotechnological practices has placed a large number of farmers in a precarious position throughout our country. Here we review and we analyzed results produced in field experiments installed along the Argentinean Pampas to determine environmental and social effects of the adoption of biotechnology practices associated with direct sowing (DS) of soybean. The use of machinery for farm work, the perfection of handling techniques, the incorporation of improved seeds, and the use of fertilizers and pesticides together influenced a significant increase in the productivity of the land, manual labors and capital. Despite positive economic results of this agricultural renewal also brought about consequences that proved to be detrimental to producers. By the end of the 1980s numerous sectors were in states of crisis. The major findings of our research are: 1) exhaustion of resources; 2) erosion problems brought on by inappropriate land use and soil compaction by increased area under DS system; 3) loss of biodiversity in the ecosystem; 4) crisis among family-owned farms who cannot access to new improved technologies due to profitability, obsolete machinery and the impossibility of access to credit; 5) reduction in smaller farms; 6) increase in specialized production, which implies the subordination of farming production to the dynamic of capital and finally more direct relationships between the entities generating technology and primary productions. The results of our study on adoption of biotechnology practice associated to DS of soybean give the following results: 1) the deterioration of family income from farms reached 41% per hectare comparing the average values of the 1990s to the 1980s. Farms smaller than 190 hectares, therefore, ceased to be “competitive” in Buenos Aires State, it can be observed a reduction of 24.2% in the number of farms. This occurred due to a reduction of small and medium-scale farmers associated with the concentration of land into farming units of more than 500 hectares; 2) annual losses in rural work rise 17.043.000 $/year or US$ 4.260.750 or, from another point of view, 4.128 tractor drivers, 3.926 mechanics and 4.600 farm workers, with an overall 12.000 rural workers; 3) increase of subsoil compaction and soil erosion was found due to high axle load of machinery equipment which also caused a decrease in crop yields ranging between 9% and 38% of the total yield per hectare of soybean crop, affecting the producers.
Selecting Pedagogical Protocols Using SOM
Fernando Salgueiro,Guido Costa,Fernando Lage,Zulma Cataldi
Revista Eletr?nica de Sistemas de Informa??o , 2006,
Abstract: During the first semesters of Computer Engineering the amount of human tutors is insufficient: the students/tutors ratio is very high and there is a great difference in the acquired knowledge and backgrounds of the students. The main idea of this paper is to describe a system that could emulate the human tutor and provide to the student with a degree of flexibility for the selection of the most adequate tutorial type. This could be a feasible solution to the stated problem. But a tutorial system should not only emulate the human tutor but besides it should be designed from an epistemological conception of what teaching Basic Programming means specially in an Engineering course due to the profile and identity of the future engineer. The stated solution implement a series of artificial neural networks to determine if there is a relationship between the given initial population of students learning predilections and the different tutoring types. A series of experiences were carried out to validate the current model.
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