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Posterior partially edentulous jaws, planning a rehabilitation with dental implants

World Journal of Clinical Cases 2015年第1期3卷 65-76页

作者： Douglas R Monteiro Emily V F Silva Eduardo P Pellizzer osvaldo magro filho Marcelo C Goiato Department of Dental Materials and Prosthodontics Araçatuba Dental SchoolUniv Estadual Paulista(UNESP)São Paulo 16015-050Brazil

AIM: To discuss important characteristics of the useof dental implants in posterior quadrants and the rehabilitation planning. METHODS: An electronic search of English articles was conducted on MEDLINE(PubM ed) from 1990 up to the period of March 2014. The key terms were dental implants and posterior jaws, dental implants/treatment planning and posterior maxilla, and dental implants/treatment planning and posterior mandible. No exclusion criteria were used for the initial search. Clinical trials, randomized and non randomized studies, classical and comparative studies, multicenter studies, in vitro and in vivo studies, case reports, longitudinal studies and reviews of the literature were included in this review. RESULTS: One hundred and fifty-two articles met the inclusion criteria of treatment planning of dental implants in posterior jaw and were read in their entirety. The selected articles were categorized with respect to their context on space for restoration, anatomic considerations(bone quantity and density), radiographic techniques, implant selection(number, position, diameter and surface), tilted and pterygoid implants, short implants, occlusal considerations, and success rates of implants placed in the posterior region. The results derived from the review process were described under several different topic headings to give readers a clear overview of the literature. In general, it was observed that the use of dental implants in posterior region requires a careful treatment plan. It is important that the practitioner has knowledge about the theme to evaluate the treatment parameters. CONCLUSION: The use of implants to restore the posterior arch presents many challenges and requires a detailed treatment planning.

关键词： Dental implants Mandible Maxilla Edentulous jaw Treatment

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Clinical and radiographic evaluation of surgical treatment of zygomatic fractures using 1.5 mm miniplates system

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Open Journal of Stomatology 2011年第4期1卷 172-178页

作者： Paulo Norberto Hasse Walter Cristiano Gealh Cassiano Costa Silva Pereira Luiz Francisco Coradazzi osvaldo magro filho Idelmo Rangel Garcia Junior 不详

Fractures of the zygomaticomaxillary complex are among the most common face traumas. Based upon the complexity and great variety of reported diagnoses and treatments, the proposal of this study was to evaluate, clinically and radiographically, unilateral zygomatic fractures treated through internal rigid fixation with miniplates and screws of 1.5 mm. Material and Method: 15 patients with unilateral fractures of the zygomaticomaxillary complex were analyzed, and compared with 15 patients without fractures so that a comparative analysis of the area and the perimeter of the orbital cavities could be made, as well as the distance from the nasal point to the zygomatic prominence between both groups. Results: In the radiographic analysis, the both groups presented similarity in the perimeter and in the area of the orbital cavities. Concerning the distance from the nasal point to the zygomatic prominence, only the operated group showed a significant difference between the sides, even though clinically the observation of the asymmetry had been absent or discreet. Conclusion: The treatment of unilateral fractures of the zygomaticomaxillary complex with the use of plates and screws of the 1.5 mm system proved to be effective, showing good esthetic results and low complication rates.

关键词： Zygomatic Fractures Internal Fracture Fixation Facial Injuries

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Soot combustion; Ceria; Ternary mixed oxide; Cordierite coating; Diesel particulate filter

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Journal of Environmental Sciences 2018年第11期30卷 58-68页

作者： Leandro Fontanetti Nascimento Juliana Fonseca Lima Paulo Cesar de Sousa filho osvaldo Antonio Serra Department of Chemistry FFCLRP University of Sao Paulo 14040-901 Ribeirao Preto Sao Paulo Brazil Institute of Chemistry Rio de Janeiro State University 20550-900 Rio de Janeiro Rio de Janeiro Brazil Institute of Chemistry Uniuersity of Campinas 13083-970 Campinas Silo Paulo Brazil Center of-Natural and Human Sciences Federal Uniuerty of ABC 09210-580 Santo Andre Sao Paulo Brazil

We report the application of a solid lanthanum-ceria-zinc catalyst in the catalytic regeneration of diesel particulate filters （DPF） in diesel engines. We synthesized a CeO2- ZnO-La2O3 （Ce-Zn-La） mixed oxide by a lactic acid-mediated sol-gel method, which efficiently coated cordierite substrates for soot capture and combustion. We studied the effects of La loading on the physicochemical and catalytic properties of Ce-Zn mixed oxide during lowtemperature soot combustion processes. We characterized the synthesized catalysts by X-ray diffraction （XRD）, Fourier-transform infrared spectroscopy （FTIR）, N2 adsorption, Raman spectroscopy, oxygen storage capacity （OSG）, and scanning and transmission electron microscopy （SEM and TEM）. Thermogravimetric and differential thermal analysis （TGA/DTA） confirmed that the catalysts effectively reduced the soot oxidation temperature. The ternary Ce-Zn-La mixed oxide catalyst with Ce/Zn/La atomic ratio of 2：1：0.5 had the highest catalytic activity and promoted soot oxidation at temperatures below 390℃. This indicated that the large number of oxygen vacancies in the catalyst structure generated oxygen species at low temperatures. Raman spectroscopy measurements revealed the presence of oxygen vacancies and lattice defects in Ce-Zn-La samples, which were key parameters concerning the stability and redox properties of the prepared catalysts.

关键词： Soot combustion Ceria Ternary mixed oxide Cordierite coating Diesel particulate filter

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Treatability studies of naphthalene in soil,water and air with persulfate activated by iron(Ⅱ)

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Journal of Environmental Sciences 2020年第4期32卷 67-77页

作者： Gabriela P.Mendes Vivian M.A.Magalhaes Lélia C·R·Soares Rayanne M.Aranha Claudio A.O.Nascimento Marilda M.G.R.Vianna osvaldo Chiavone-filho Department of Chemical Engineering University of Sao PauloSPf 05508-000Brazil Department of Chemical Engineering Federal University of Rio Grande Do NorteNatalRN59072-970Brazil

Chemical oxidation was applied to an artificially contaminated soil with naphthalene(NAP).Evaluation of NAP distribution and mass reduction in soil,water and air phases was carried out through mass *** of NAP distribution and mass reduction in soil,water and air phases was carried out through mass *** importance of the air phase analysis was emphasized by demonstrating how NAP behaves in a sealed system over a 4 hr reaction *** of Experiments method was applied to the following variables:sodium persulfate concentration[SP],ferrous sulfate concentration[FeS04],and *** system operated with a prefixed solid to liquid ratio of 1:*** following conditions resulted in optimum NAP removal[SP]=18.37 g/L,[FeSO4]=4.25 g/L and pH=*** the end of the 4 hr reaction,62%of NAP was *** the soil phase,the chemical oxidation reduced the NAP concentration thus achieving levels which comply with Brazilian and USA environmental *** the NAP partitioning view,the monitoring of each phase allowed the variabilities assessment over the process,refining the knowledge of mass *** on NAP distribution in the system,this study demonstrates the importance of evaluating the presence of semi-volatile and volatile organic compounds in the air phase during remediation,so that there is greater control of the system as to the distribution and presence of the contaminant in the *** results highlight the importance of treating the contaminant in all its phases at the contaminated site.

关键词： Chemical oxidation Phase distribution Degradation kinetics PAH Soil remediation Mass balance

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Peristomal variceal bleeding treated by coil embolization using a percutaneous transhepatic approach

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World Journal of Clinical Cases 2016年第1期4卷 25-29页

作者： Macello José Sampaio Maciel osvaldo Ignácio Pereira Joaquim Maurício Motta Leal filho Enio Ziemiecki Junior Susyanne Lavor Cosme Moisés Amancio Souza Francisco Cesar Carnevale Radiology Department of Heart Institute Hospital das ClínicasFaculdade de Medicina da Universidade de São Paulo

Peristomal variceal bleeding due to portal hypertension is an entity that has rarely been reported with 3%-4% risk of death.A 68-year-old woman who had undergone a palliative colostomy(colorectal carcinoma) presented with a massive hemorrhage from the colostomy *** her oncological status with medial and right hepatic veins thrombosis due to liver metastasis invasion,an emergency transhepatic coil embolization was successfully *** treatment modality for these cases has not been *** transhepatic coil embolization of varices is a safe and effective choice in patients who present with life threatening bleeding and exhibit contraindications to transjugular intrahepatic portosystemic shunt.

关键词： Ectopic variceal bleeding Stomal bleeding Percutaneous transhepatic embolization Colostomy Cirrhosis Hemostasis

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Effect of Mucuna Defatted Bran Extracted with Supercritical CO2 on Soybean Seed Germination

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Journal of Food Science and Engineering 2013年第4期3卷 187-195页

作者： Vitor Augusto dos Santos Garcia osvaldo Ferrarese-filho Vladimir Ferreira Cabral Ed Hoffmann Madureira Camila da Silva Lucio Cardozo-filho Department of Agronomy Universidade Estadual de Maringa Maringa PR 87020-900 Brazil Department of Biochemistry Universidade Estadual de Maringa Maringa PR 87020-900 Brazil Department of Chemical Engineering Universidade Estadual de Maringa Maringa PR 87020-900 Brazil Department of Animal Reproduction Universidade de Sao Paulo Pirassununga SP 13635-900 Brazil Department of Technology Universidade Estadual de Maringa Umuarama PR 87506-370 Brazil

In the present work, we investigated the effect of Mucuna deeringiana defatted bran on seed germination of soybean （Glycine max L. Merrill）. For this, the defatted bran was obtained from different operational conditions using CO2 under pressurized conditions as solvent. Oil extractions were carried out in a laboratorial scale unit at temperatures ranging from 310 to 330 K, pressure from 15 to 25 MPa and solvent flow set in 3 mL min^-1. The experiment was conducted in a germination chamber （25℃, 12：12 h light：dark photoperiod）, and the germination rate and germination speed index （GSI） were evaluated for seven days. The results showed that the oil extraction with supercritical CO2 concentrates the allelochemical L-3,4-dihydroxyphenylalanine （L-DOPA） in bran with levels from 1.86% to 4.65%. Subsequent experiments revealed that the rate of soybean seed germination was not affected by defatted bran whereas the GSI increased significantly after treatment. In brief, we concluded that the extraction process with supercritical CO2 is efficient to obtain L-DOPA of Mucuna, which influences the soybean seed germination.

关键词： L-DOPA Mucuna deeringiana soybean seed germination supercritical CO2 defatted bran

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Effect of Microwave Power on the Zn2SnO4 Synthesis and Its Use for Photodegradation of Phenol

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Journal of Chemistry and Chemical Engineering 2014年第8期8卷 794-799页

作者： Edson Luiz Foletto Marcio Antonio Mazutti Adriano Cancelier Erico Marion de Moraes Flores Edson Irineu Muller Leticia Severo Fagundes Pereira osvaldo Chiavone-filho Andre Gundel Department of Chemical Engineering Federal University of Santa Maria Santa Maria 97105-900 Brazil Department of Chemistry. Federal University of Santa Maria Santa Maria 97105-900 Brazil Department of Chemical Engineering Federal University of Rio Grande do Norte Natal 59066-800 Brazil Department of Physics Federal University of Pampa Bage 96413-170 Brazil

Spinel structure Zn2SnO4 was successfully synthesized by microwave-assisted hydrothermal process. The effects of the microwave power on the formation and physical properties of the Zn2SnO4 particles are discussed. The products were characterized by X-ray diffraction, atomic force microscopy, infrared spectroscopy, and N2 adsorption. The results indicated that the microwave power had important influence on the formation of the spinel phase. The results also revealed that the physical properties of Zn2SnO4 particles did not change with the increase of the microwave power above 600 W, with 20 min of reaction time. Furthermore, the photocatalytic activity of the Zn2SnO4 particles for the phenol degradation under sunlight was also investigated.

关键词： Zn2SnO4 zinc stannate synthesis microwave porous material photocatalysis.

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