GLORIA

GEOMAR Library Ocean Research Information Access

X

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Online Resource
    Online Resource
    Corrosion characterization of the experimental alloy Ti-35Nb-7Zr-5Ta by electrochemical techniques
    Research, Society and Development ; 2021
    In:  Research, Society and Development Vol. 10, No. 6 ( 2021-06-04), p. e40610615861-
    Details
    In: Research, Society and Development, Research, Society and Development, Vol. 10, No. 6 ( 2021-06-04), p. e40610615861-
    Abstract: The objective of the present study was to evaluate the corrosion resistance of the experimental alloy Ti-35Nb-7Zr-5Ta, modified by laser beam, in a physiological solution of 0.9% NaCl. This evaluation was carried out by open circuit potential analysis (EOCP), potentiodynamic polarization curves and cyclic polarization curves. The open circuit potential curves show the specimen irradiated by laser beam at 35 Hz presented a more stable and corrosion resistant surface. It was observed in the polarization curves, low current densities in the order of nA /cm2, for all specimen indicating an expected passive behavior for the investigated alloy. The cyclic polarization curves show that for specimen treated with laser, the potential for repassivation (Er) is greater in relation to the potential for corrosion (Ecorr), which indicates greater resistance to corrosion of metal alloys when treated with laser.
    Type of Medium: Online Resource
    ISSN: 2525-3409
    URL: Article
    DOI: 10.33448/rsd-v10i6.15861
    Language: Unknown
    Publisher: Research, Society and Development
    Publication Date: 2021
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 2
    Online Resource
    Online Resource
    Plasmacytoma in the Oral Cavity: A Case Report
    SciELO Agencia Nacional de Investigacion y Desarrollo (ANID) ; 2011
    In:  International journal of odontostomatology Vol. 5, No. 2 ( 2011-08), p. 115-118
    Details
    In: International journal of odontostomatology, SciELO Agencia Nacional de Investigacion y Desarrollo (ANID), Vol. 5, No. 2 ( 2011-08), p. 115-118
    Type of Medium: Online Resource
    ISSN: 0718-381X
    URL: Article
    DOI: 10.4067/S0718-381X2011000200001
    Language: English
    Publisher: SciELO Agencia Nacional de Investigacion y Desarrollo (ANID)
    Publication Date: 2011
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 3
    Online Resource
    Online Resource
    Physicochemical characterization of the Ti-6Al-4V ELI alloy thermochemically treated with NaOH
    Research, Society and Development ; 2022
    In:  Research, Society and Development Vol. 11, No. 2 ( 2022-02-04), p. e50211225915-
    Details
    In: Research, Society and Development, Research, Society and Development, Vol. 11, No. 2 ( 2022-02-04), p. e50211225915-
    Abstract: Titanium is a complex element and presents more than one crystallographic form, at room temperature it has a hexagonal crystal structure that transforms into a body-centered structure at 800ºC, and a melting point of 1670ºC ± 5ºC. Titanium alloys have superior mechanical properties to Ti c.p. in addition to excellent biocompatibility, a characteristic makes them the material of choice in orthopedic and dental applications. The alloy used in this study was the Ti-6Al-4V ELI alloy, obtained in cylindrical shape, sanded, and subsequently subjected to thermochemical treatment with NaOH. The physicochemical characterization was performed by the techniques of X-ray fluorescenic spectrometry (XRF), scanning electron microscopy (SEM), X-ray diffractometry (XRD) and X-ray excited photoelectron spectroscopy (XPS). A biphasic structure (α and β) and the formation of an alkali titanate hydrogel (sodium titanate (Na2Ti5O11)) on the surface were observed, due to the reaction of the TiO2 film with the NaOH solution. It is concluded the immersion of the samples in NaOH, resulting in the crystallization of the titanate hydrogel layer, may favor the formation of calcium phosphates, as well as the bone/implant interaction.
    Type of Medium: Online Resource
    ISSN: 2525-3409
    URL: Article
    DOI: 10.33448/rsd-v11i2.25915
    Language: Unknown
    Publisher: Research, Society and Development
    Publication Date: 2022
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 4
    Online Resource
    Online Resource
    A importância da avaliação postural no paciente com disfunção da articulação temporomandibular
    FapUNIFESP (SciELO) ; 2004
    In:  Acta Ortopédica Brasileira Vol. 12, No. 3 ( 2004-09), p. 155-159
    Details
    In: Acta Ortopédica Brasileira, FapUNIFESP (SciELO), Vol. 12, No. 3 ( 2004-09), p. 155-159
    Abstract: The position of the head over the neck determines the posture of the body and is responsible for the body balance and head movements. The temporomandibular joint (TMA) is directly related to the cervical and the scapular region by a common neuromuscular system. Changes in the cervical spine can cause lead to TMA disorders and contra wise. The increasing number of patients with TMA disorders who also had postural disorders led to the development of studies to evaluate their interactions. The present study aimed to review the papers that have shown a relationship between wrong posture and TMA disorders. It emphasizes the importance of a multidisciplinary team formed by an orthopedist, dental surgeon, and physiotherapist in the diagnosis and treatment of TMA disorders and wrong posture.
    Type of Medium: Online Resource
    ISSN: 1413-7852
    URL: Article
    DOI: 10.1590/S1413-78522004000300004
    Language: Unknown
    Publisher: FapUNIFESP (SciELO)
    Publication Date: 2004
    detail.hit.zdb_id: 2105206-2
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 5
    Online Resource
    Online Resource
    Microstructural Characterization and Analysis of β-Titanium Alloy (Ti-35Nb-7Zr-5Ta) Modified by Laser Beam for use in Implantology
    Editora e Distribuidora Educacional ; 2022
    In:  Ensaios e Ciência C Biológicas Agrárias e da Saúde Vol. 26, No. 1 ( 2022-03-30), p. 72-77
    Details
    In: Ensaios e Ciência C Biológicas Agrárias e da Saúde, Editora e Distribuidora Educacional, Vol. 26, No. 1 ( 2022-03-30), p. 72-77
    Abstract: A liga Ti-6Al4V apresenta elementos nocivos ao organismo como alumínio e vanádio, demonstrando a importância do desenvolvimento de novas ligas de Ti, com adição de elementos não tóxicos. Para a realização deste estudo, os elementos foram fundidos a arco voltaico e usinados. As amostras foram divididas em grupos sem tratamento de superfície (Grupo I) e com modificação de superfície por irradiação de feixe de laser Yb:YVO4 em duas condições: 20Hz (Grupo II) e 35Hz (Grupo III). A caracterização estrutural e microestrutural foi realizada por avaliação de módulo de Young, microscopia eletrônica de varredura (MEV) com microanálise elementar por energia dispersiva de raios X (EDX) e a Difratometria de raios X (DRX). Os resultados demonstraram uma liga de estrutura predominantemente β e formação de uma camada de óxidos de titânio sobre a superfície da liga nas três condições estudadas, indicando uma proteção do material á reações químicas em relação ao meio ao qual se expõe (NaCl 0,9%). As caracterizações apresentaram resultados favoráveis à irradiação por feixe laser, notando-se a formação de TiO2 que são importantes e responsáveis pela atração de células do tecido ósseo e interação osso/implante.   Palavras-chave: Ligas Dentárias. Titânio. Implantes Dentários. Modificações de Superfície.   Abstract The Ti-6Al-4V alloy presents elements harmful to the organism, such as aluminum and vanadium, demonstrating the importance of developing new Ti alloys with the addition of non-toxic elements. The elements were melted and machined for the study; the samples were divided into groups without surface treatment (Group I) and with surface modification by Yb: YVO4 laser beam irradiation in two conditions: 20Hz (Group II) and 35Hz (Group III). Structural and microstructural characterization was performed by evaluating Young's module, scanning electron microscopy (SEM) with elemental microanalysis by X-ray dispersive energy (EDX), and X-ray diffractometry (XRD). The results report an alloy of predominantly β structure and the formation of a layer of titanium oxides on the surface of the alloy in the three conditions studied, indicating protection of the material from chemical reactions related to its environment exposed to (NaCl 0.9%). The characterizations showed favorable results to laser beam irradiation, noting the formation of TiO2 compounds that are important and responsible for the attraction of bone tissue cells and bone/implant interaction.   Keywords: Dental Alloys. Titanium. Dental Implants. Surface Modifications.  
    Type of Medium: Online Resource
    ISSN: 2178-695X , 1415-6938
    URL: Issue
    URL: Article
    DOI: 10.17921/1415-6938.v26n1
    DOI: 10.17921/1415-6938.2022v26n1p72-77
    Language: Unknown
    Publisher: Editora e Distribuidora Educacional
    Publication Date: 2022
    detail.hit.zdb_id: 2214912-0
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 6
    Online Resource
    Online Resource
    Resgate da Valorização da Higienização das Mãos em Tempos de Pandemia
    Editora e Distribuidora Educacional ; 2021
    In:  Ensaios e Ciência C Biológicas Agrárias e da Saúde Vol. 25, No. 2 ( 2021-06-29), p. 206-213
    Details
    In: Ensaios e Ciência C Biológicas Agrárias e da Saúde, Editora e Distribuidora Educacional, Vol. 25, No. 2 ( 2021-06-29), p. 206-213
    Abstract: A velocidade da disseminação e as alarmantes taxas de mortalidade decorrentes da pandemia do COVID-19 levaram os países a adotarem medidas urgentes para impedir a disseminação do COVID-19. Entre essas se destaca a higienização das mãos, reconhecida como um importante método de prevenção da transmissão de doenças e de cuidados em saúde pública. Trata-se de um procedimento de baixa complexidade e de simples realização. A prática da higienização das mãos é considerada um dos principais mecanismos de combate às infecções relacionadas à assistência na saúde, quer seja em atenção primária ou em níveis de maior complexidade. Além disso, todos deveriam lançar mão da higienização no dia a dia dos afazeres domésticos, especialmente, no cuidado com o núcleo familiar. Apesar disso, sabe-se que há uma baixa adesão à higienização das mãos, sendo que esta prática deveria ser aplicada de maneira consistente. Nesse sentido, propôs-se neste estudo um resgate da valorização da higiene das mãos em tempos de pandemia para o controle de infecções, reforçando a importância da higienização das mãos, enquanto importante prática de prevenção e cuidado. Palavras-chave: Mãos Limpas. Infecção. Higienização. Infecções por Coronavirus. Abstract The dissemination speed and the alarming mortality rates resulting from the COVID-19 pandemic led countries to take urgent measures to prevent the spread of COVID-19. Among them, hand hygiene stands out, recognized as an important method of preventing disease transmission and public health care. It is a low complexity and simple procedure. The hand hygiene practice is considered one of the main mechanisms to fight infections related to health care, whether in primary care or at more complex levels. In addition, everyone should use hygiene in the home care daily routine, especially in caring for the family unit. Despite this, it is known that there is a low adherence to hand hygiene, and this practice should be applied consistently. Therefore, it was proposed in this study to rescue the valorization of hand hygiene in times of pandemic for infection control, reinforcing the importance of hand hygiene as an important prevention and care practice. Keywords: Clean Hands. Infection. Hygiene. Coronavirus Infections.
    Type of Medium: Online Resource
    ISSN: 2178-695X , 1415-6938
    URL: Issue
    URL: Article
    DOI: 10.17921/1415-6938.v25n2
    DOI: 10.17921/1415-6938.2021v25n2p206-213
    Language: Unknown
    Publisher: Editora e Distribuidora Educacional
    Publication Date: 2021
    detail.hit.zdb_id: 2214912-0
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...