1,721,013 research outputs found
Epifania e velhice em “Feliz aniversário” de Clarice Lispector
Full text linkO presente trabalho tem a intenção de investigar a epifania e velhice no conto “Feliz Aniversário”, o qual Clarice Lispector incluiu na antologia Laços de família, publicada pela primeira vez em 1960. A escolha desta narrativa deve-se ao fato de ela ter como personagem central uma mulher bastante idosa, a qual, semelhante a diversas outras mulheres de Clarice Lispector, vive um instante revelador. Este estudo está dividido em quatro capítulos. O primeiro trata do conto e do foco narrativo. O conto, segundo diversos estudiosos, é uma narrativa breve. É também fruto de um trabalho racional. Devido a sua brevidade e concisão, ele flagra um momento especial. Bem como apresenta uma tensão e termina num clímax. No caso do objeto de nossa análise, tem-se uma narradora em terceira pessoa, que conhece o interior das personagens, sobretudo da protagonista. O segundo capítulo trata da epifania e da velhice. A primeira é recorrente na obra de Clarice Lispector, e costuma ser entendida como uma revelação que se dá à personagem num momento inesperado. Esta revelação acontece por meio dos sentidos, principalmente, através da visão. No caso que aqui estudamos, ou seja, em “Feliz aniversário”, temos uma combinação entre epifania e velhice. Ora, a velhice é uma fase difícil de ser vivida por quem passa por ela. Isso acontece porque o velho, em nossa sociedade e cultura, é descartável e “invisível”. As pessoas, geralmente, não têm paciência para ouvi-lo; podam-lhe todas as ocupações, por acharem que ele não é capaz de desempenhá-las; não respeitam suas vontades. Isso, muitas vezes, leva o idoso ao isolamento, à solidão e ao tédio. Aqueles que conseguem escapar desejam chamar a atenção, querem exercitar sua vaidade e autoestima, a fim de serem alguém novamente. Já o terceiro capítulo faz uma análise pormenorizada dos conflitos familiares em “Feliz Aniversário”, destacando a relação pouco estreita entre D. Anita, aniversariante e personagem principal, e seus familiares. Por fim, o quarto capítulo é pontualmente dedicado à epifania e à velhice no conto em análise. Mostraremos como D. Anita e Cordélia (nora mais nova) vivem de maneiras diferentes o processo epifânico; aquela por ter evidentes traços típicos da velhice, e esta por meio da afinidade com a idosa. Neste capítulo, foi feita também uma aproximação entre Cordélia clariceana e a Cordélia de Shakespear
An electromyographic evaluation of bilateral symmetry of masticatory, neck and trunk muscles activity in patients wearing a positioner
Full text linkPRADER-WILLI SYNDROME: ORAL FINDINGS
Full text linkAim: Prader-Willi syndrome is a rare multisystemic genetic disorder
caused by lack of expression of certain paternal genes
located on chromosome 15.
The syndrome, associated to hypothalamic and pituitary disfunction,
is characterized by severe neonatal hypotonia and
feeding problems. Neonatal hypotonia is followed, during
childhood by hyperphagia and obesity. In addition, hypothalamic
alterations can cause intellectual disability, behavioral
problems, a high pain threshold, respiratory sleep disorders.
The aim of this work is to evaluate the main dental aspects and
the therapeutic implications.
Methods: an analysis of the literature was performed using
databases.
Results: common clinical findings: gingivitis and periodontitis,
dental and skeletal malocclusions, enamel hypoplasia, tooth wear
and dental erosion, bruxism, xerostomia, candidiasis and angular
cheilitis, high risk of caries and increased DMFT score.The typical
poor oral hygiene in PWS patients is related to qualitative-quantitative
changes in saliva and incoordination in tooth brushing.
Conclusion: it is necessary to motivate family and patient to
maintain oral hygiene. Due to the various systemic and dental
problems, a six-monthly follow-up is required since early childhood.
Dental treatment purposes require a multidisciplinary
approach which includes periodontal and conservative cares.
In prosthetics, we suggest the use of removable dentures because
of the difficulty in maintaining oral hygiene
EXPERIMENTAL EVALUATION OF INTRAORAL SCANNERS IN EDENTULOUS MANDIBLES
Full text linkAim: the main difficulties for intraoral scanners (IOS) are found in
the edentulous mandibles. The reduced bucco-lingual surface, the
limited height of the bone crest and the mobility of the soft tissues
generate criticalities for the acquisition of the digital impression.
The purpose of this study is to evaluate the comparison between
digital and analog impressions in these particular conditions.
Methods: two scans were obtained for the 11 subjects. The first
intraoral scan was carried out with intraoral scan (Omnicam
DentsplySirona) and the second was acquired by digitizing a plaster
model, obtained from an impression taken with an analogue
method, the best choice in these cases. All scans were converted
to standard tessellation language (STL). The STL files obtained for
each patient were superimposed by means of the GEOMAGIC
Control X software, to evaluate the comparison.
The average distance values obtained through the Geomagic
3D software constitute our primary outcome measure. 1 sample
t-test was used to prove the hypothesis that the average
distances of the points obtained between the two files are relevant
(α = .05).
Results: concerning the scans ability to reproduce the analog
impression the intraoral scans carried out with a intraoral scan
generated files with single measurements in terms of minimal
distance between objects far from scans obtained with analogue
methods (t =-7.29, P < .001).
Conclusion: regarding the results obtained, it was possible to
conclude that the STL files deriving from digital impressions
are significantly different from those deriving from analog impressions,
highlighting a difference between the two methods
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Low-pH cements based on blends of MgO and hydromagnesite
No full textMost of the alternative low CO2-cements that have been proposed are based on
calcium silicates and aluminates. Their main calcium source is limestone, even though the
amounts required may be somewhat lower than for Portland cement clinker.
MgO can be used to make a variety of hydraulic binders as well as binders that harden
by carbonation. Potential raw materials are Magnesium silicates or Mg-containing brines,
which could be carbonated and partially calcined afterwards to obtain mixture of MgO
and basic magnesium carbonates. If the final composition of the hardened binder were
sufficiently rich in carbonate the CO2 sequestered by it could fully compensate for the CO2
emitted by the production of the energy needed to drive the manufacturing process, we
could talk of a truly carbon-neutral binder. We could even envisage carbon-negative binders
for which there would be net consumption of CO2 during manufacture and use. Besides their
ability to bind CO2, such binders have a low pH (around 10-11), which could be of potential
interest regarding waste encapsulation.
The current study aimed at increasing the initial carbonate content of such binders in order
to enhance their effectiveness as a means of reducing CO2 emissions. The hydration of
reactive periclase (MgO) in the presence of hydromagnesite (Mg5(CO3)4(OH)2·4H2O) was
investigated by a variety of physical and chemical techniques. Isothermal calorimetry,
X-ray powder diffraction, thermal analysis, vibrational spectroscopy (infrared and Raman
spectroscopy) and thermodynamic modelling were applied to assess the hydration mechanism.
Isothermal calorimetry showed that partial replacement of the MgO with
hydromagnesite accelerated the hydration of the pure MgO at early ages (i.e. for about the
first half day). The MgO-hydromagnesite blends always produced a significant amount of an
unknown hydrate with a thermal decomposition peak centered on about 100°C as
determined by thermogravimetry. This hydrate, which was not observed in a previous study, formed quickly – it was already present by one day of hydration and did not increase
significantly after that. We hypothesise that this peak represents an amorphous or very
poorly-crystalline phase that leads to cohesive binding in these blends. The other main
difference between the hydrated MgO-hydromagnesite pastes and the pure MgO paste is the
observation of very broad X-ray diffraction peaks for brucite whenever hydromagnesite is
present. Furthermore, reflections of a dypingite-like phase (Mg5(CO3)4(OH)2·5H2O) were
identified by X-ray diffraction. The formation of artinite, which was calculated to be the
thermodynamic stable phase, could not be confirmed, even if a few % of pure artinite were
added as seeds to the mix
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