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Search Results: 1 - 10 of 4798 matches for " Renata Vecentin "
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Treatment of retroauricular keloids: Revision of cases treated at the ENT service of HC/UFPR
Carvalho, Bettina,Ballin, Annelyse Cristine,Becker, Renata Vecentin,Ribeiro, Talita Beithum
International Archives of Otorhinolaryngology , 2012,
Abstract: Introduction: Keloids are benign tumors arising from abnormal healing of the skin, and there are several procedures available for their treatment. Objective: The objective of this study was to evaluate the outcomes of patients undergoing treatment of keloids after ear, nose, and throat (ENT) surgeries at our service center. Method: We conducted thorough, retrospective and prospective analysis of records of patients undergoing treatment of retroauricular keloids at our center. Results: Nine patients were evaluated, and 6 underwent resection and adjuvant beta-therapy, 2 underwent resection with local application of corticosteroids, and only 1 underwent resection without adjuvant therapy. There was no recurrence of keloids in patients that were treated with beta-therapy in the early postoperative period. One patient had relapsed despite corticosteroid administration and late beta-therapy. Discussion: Several techniques have been used for the treatment of retroauricular keloids, and beta-therapy is thought to yield the best results, followed by the use of intralesional corticosteroids. Conclusion: Treatment of retroauricular keloids remains a challenge. While new techniques are being developed, resection followed by early beta-therapy is still the best treatment option.
Rhinoplasty and facial asymmetry: Analysis of subjective and anthropometric factors in the Caucasian nose
Carvalho, Bettina,Ballin, Annelyse Christine,Becker, Renata Vecentin,Berger, Cezar Augusto Sarraff
International Archives of Otorhinolaryngology , 2012,
Abstract: Introduction: Anthropometric proportions and symmetry are considered determinants of beauty. These parameters have significant importance in facial plastic surgery, particularly in rhinoplasty. As the central organ of the face, the nose is especially important in determining facial symmetry, both through the perception of a crooked nose and through the determination of facial growth. The evaluation of the presence of facial asymmetry has great relevance preoperatively, both for surgical planning and counseling. Aim/Objective: To evaluate and document the presence of facial asymmetry in patients during rhinoplasty planning and to correlate the anthropometric measures with the perception of facial symmetry or asymmetry, assessing whether there is a higher prevalence of facial asymmetry in these patients compared to volunteers without nasal complaints. Methods: This prospective study was performed by comparing photographs of patients with rhinoplasty planning and volunteers (controls), n = 201, and by evaluating of anthropometric measurements taken from a line passing through the center of the face, until tragus, medial canthus, corner side wing margin, and oral commissure of each side, by statistical analysis (Z test and odds ratio). Results: None of the patients or volunteers had completely symmetric values. Subjectively, 59% of patients were perceived as asymmetric, against 54% of volunteers. Objectively, more than 89% of respondents had asymmetrical measures. Patients had greater RLMTr (MidLine Tragus Ratio) asymmetry than volunteers, which was statistically significant. Discussion/Conclusion: Facial asymmetries are very common in patients seeking rhinoplasty, and special attention should be paid to these aspects both for surgical planning and for counseling of patients.
Tratamento de queloide retroauricular: revis?o dos casos tratados no servi?o de otorrinolaringologia do HC/UFPR
Carvalho, Bettina;Ballin, Annelyse Cristine;Becker, Renata Vecentin;Ribeiro, Talita Beithum;Cavichiolo, Juliana Benthien;Ballin, Carlos Roberto;Mocellin, Marcos;
International Archives of Otorhinolaryngology , 2012, DOI: 10.7162/S1809-97772012000200007
Abstract: introduction: keloids are benign tumors arising from abnormal healing of the skin, and there are several procedures available for their treatment. objective: the objective of this study was to evaluate the outcomes of patients undergoing treatment of keloids after ear, nose, and throat (ent) surgeries at our service center. method: we conducted thorough, retrospective and prospective analysis of records of patients undergoing treatment of retroauricular keloids at our center. results: nine patients were evaluated, and 6 underwent resection and adjuvant beta-therapy, 2 underwent resection with local application of corticosteroids, and only 1 underwent resection without adjuvant therapy. there was no recurrence of keloids in patients that were treated with beta-therapy in the early postoperative period. one patient had relapsed despite corticosteroid administration and late beta-therapy. discussion: several techniques have been used for the treatment of retroauricular keloids, and beta-therapy is thought to yield the best results, followed by the use of intralesional corticosteroids. conclusion: treatment of retroauricular keloids remains a challenge. while new techniques are being developed, resection followed by early beta-therapy is still the best treatment option.
Rinoplastia e assimetria facial: análise de fatores subjetivos e antropométricos no nariz caucasiano
Carvalho, Bettina;Ballin, Annelyse Christine;Becker, Renata Vecentin;Berger, Cezar Augusto Sarraff;Hurtado, Johann G. G. Melcherts;Mocellin, Marcos;
International Archives of Otorhinolaryngology , 2012, DOI: 10.7162/S1809-97772012000400004
Abstract: introduction: anthropometric proportions and symmetry are considered determinants of beauty. these parameters have significant importance in facial plastic surgery, particularly in rhinoplasty. as the central organ of the face, the nose is especially important in determining facial symmetry, both through the perception of a crooked nose and through the determination of facial growth. the evaluation of the presence of facial asymmetry has great relevance preoperatively, both for surgical planning and counseling. aim/objective: to evaluate and document the presence of facial asymmetry in patients during rhinoplasty planning and to correlate the anthropometric measures with the perception of facial symmetry or asymmetry, assessing whether there is a higher prevalence of facial asymmetry in these patients compared to volunteers without nasal complaints. methods: this prospective study was performed by comparing photographs of patients with rhinoplasty planning and volunteers (controls), n = 201, and by evaluating of anthropometric measurements taken from a line passing through the center of the face, until tragus, medial canthus, corner side wing margin, and oral commissure of each side, by statistical analysis (z test and odds ratio). results: none of the patients or volunteers had completely symmetric values. subjectively, 59% of patients were perceived as asymmetric, against 54% of volunteers. objectively, more than 89% of respondents had asymmetrical measures. patients had greater rlmtr (midline tragus ratio) asymmetry than volunteers, which was statistically significant. discussion/conclusion: facial asymmetries are very common in patients seeking rhinoplasty, and special attention should be paid to these aspects both for surgical planning and for counseling of patients.
Trifuntional Oligoetherols and Polyurethane Foams with Carbazole Ring  [PDF]
Renata Lubczak
Open Journal of Organic Polymer Materials (OJOPM) , 2012, DOI: 10.4236/ojopm.2012.21001
Abstract: The method of synthesis of trifuntional oligoetherols with carbazole ring from 9-(2,3-epoxypropyl)carbazole and die- thanolamine and oxiranes like ethylene and propylene oxide was presented. Structure and some physicochemical prope- rties of the products were described. The oligoetherols were demonstrated as good substrates for synthesis of polyure- thane foams of enhanced thermal resistance. It has been found that the obtained foams are rigid at room temperature and their apparent density was 34 kg/m3- 44 kg/m3. The water uptake was low, maximum to 10.5 mass%. Dynamic thermal analysis of this foams showed that 5% mass loss starts at 200?C - 220?C, while temperature of 50% mass loss was 340?C - 370?C. Concomitantly the increase of compression strength was observed.
Lex Arbitri, Lex Curia and Lex Contractus in Brazilian Jurisdiction  [PDF]
Renata Thiebaut
Beijing Law Review (BLR) , 2016, DOI: 10.4236/blr.2016.72014
Abstract: International arbitration arose as a global phenomenon with the growth of transcontinental trade in a progressive smaller world. As its role and importance have become defined, the use of arbitration as an alternative dispute resolution has increased all around the world accordingly. However, even with unified international documents, such as the 1958 New York Convention, 1965 Washington Convention, 1985-2006 United Nations Commission on International Trade Law, or UNICITRAL Model Law, arbitration has been approached differently domestically, thus facing conflicts or controversies. This paper has as main objective to explain the key points concerning arbitration within the Brazilian legal system. The evolution of arbitration will be studied since the Iberian Union in the colonial era in order to bring about the formation of its legal characteristics. Besides, the current Brazilian Arbitration Act, promulgated in 1996, will be analyzed focusing on its provision gaps. The Sulamerica-Enesa arbitral award will be the case study of this paper, which will contribute to a better understanding of the increase in conflicts with the use of this method of dispute resolution. Last, an overview of the Brazilian arbitration legislation as well as its “gaps” will determine that in spite of arbitration being successfully implemented in Brazil, there is still an eminent need to improve legislation, which will be substantial to avoid further conflicts in lex arbitri, lex curia and lex contractus within arbitration itself.
Evaluation of phosphorus and nitrogen balances as an indicator for the impact of agriculture on environment: A comparison of a case study from Poland and Mississippi US  [PDF]
Renata Gaj, Nacer Bellaloui
Agricultural Sciences (AS) , 2012, DOI: 10.4236/as.2012.32036
Abstract: The objective of this research was to quantify the changes of nitrogen (N) and phosphorus (P) balances in Poland and Mississippi (MS), USA. Nutrient balances were calculated as difference between input and output in the agricultural system according to Organisation for Economic Cooperation and Development (OECD) methodology. A positive nutrient balance means that a potential environmental problem may result from that nutrient; a negative nutrient balance means there is a potential yield loss. The N and P soil surface balances for Poland and MS were calculated for the year 1998 through 2008. The results showed that both MS and Poland had positive N and P balances, indicating that there was a surplus of N and P. The average balance for N was 48 kg·ha-1 in Poland and 102 kg·ha-1 in MS. For P, it was 3 kg·ha-1 in Poland and 19 kg P kg·ha-1 in MS per cultivated area. This research demonstrated that the nutrient balance of N or P depended on the efficient use of each nutrient and type and source of fertilizer used. This research is significant for N and P fertilizer management and their impact on agriculture production and environment health.
Escherichia coli in seafood: A brief overview  [PDF]
Renata Albuquerque Costa
Advances in Bioscience and Biotechnology (ABB) , 2013, DOI: 10.4236/abb.2013.43A060
Abstract:

Considering the importance of researching the bacteriological quality of seafood, the following study aimed to make a brief overview on the occurrence of Escherichia coli in marine fish and shellfish, and to discuss the sanitary importance that the isolation of this enterobacteria represents to public health.

Quick Single Run Capillary Zone Electrophoresis Determination of Active Ingredients and Preservatives in Pharmaceutical Products  [PDF]
Marina Franco, Renata Jasionowska
American Journal of Analytical Chemistry (AJAC) , 2013, DOI: 10.4236/ajac.2013.43016
Abstract:

The paper deals with the development of a rapid and efficient Capillary Zone Electrophoresis (CZE) method for Quality Control analysis of pharmaceutical preparations containing antihistamines, decongestants, anticholinergic remedies and preservatives. Active ingredients of interest are: ChlorPheniramine Maleate (CPM), DiPhenhydramine Hydrochloride (DPH), Ephedrine hydrochloride (E), Isopropamide Iodide (II), Pheniramine Maleate (PM), Lidocaine hydrochloride (L), Tetracaine hydrochloride (T), Clopamide Hydrochloride (CH), DiHydroErgochristine (DHE), PhenylEphrine hydrochloride (PE) and Acetaminophen (A). Preservatives studied are: MethylParaben (MeP), EthylParaben (EtP), PropylParaben (PrP), ButylParaben (BuP), p-HydroxyBenzoic Acid (p-HBA). All these analytes were separated in a single run using 60 mM tetraborate buffer solution (TBS) pH = 9.2 as a BackGround Electrolyte (BGE) by using an uncoated fused silica capillary of I.D. = 50 mm and applying a voltage of 25 kV in the first part of the electropheretic run (up to 5.8 min) and 30 kV for the remaining time. The hydrodynamic pressurization of the inlet vial was 20 psi at 7.2 min. up to the end of analysis. Total separation time was of 7.5 min. The method was then successfully validated and applied to the simultaneous determination of active ingredients and preservatives. Good repeatability, linearity, and sensitivity were demonstrated. Precision of migration time (tm) was RSD% < 0.53% and of corrected peak area (Ac) was RSD% < 6.15%. The linearity evaluation gave 0.9928 < r2 < 1.000. LOD and LOQ, accuracy (recovery) and ruggedness were evaluated for each analyte demonstrating the good reliability of the method. Analyses of some pharmaceutical real samples were performed.

Rapid and Sensitive CZE Method for Quality Control Analysis of Pharmaceuticals Containing Pseudoephedrine, Triprolidine and Paracetamol  [PDF]
Sonia Di Berardino, Renata Jasionowska
American Journal of Analytical Chemistry (AJAC) , 2014, DOI: 10.4236/ajac.2014.59069
Abstract: A rapid and sensitive CZE (Capillary Zone Electrophoresis) method for pharmaceutical analysis was developed and fully validated. The active compounds: Pseudoephedrine hydrochloride (PSE), Triprolidine hydrochloride (TRI) and Paracetamol (PAR) were separated and quantitatively determined using the tris-borate 30 mM buffer at pH = 9.0 as a Background Electrolyte (BGE). The electrophoretic separation was carried out at 25 kV in an unmodified fused silica capillary of I.D. = 50 μm with a “bubble-cell” for UV detection at 210 nm and 25°C. The separation was reached in about 3 min. After calibration the method was applied for analysis of three commercially available pharmaceutical preparations. The repeatability (RSD%) of migration time (tm) was ranging between 0.47% and 0.90% and of peak areas (A) between 0.63% and 3.64%. The Limit of Detection (LOD) values was of 0.19 μg/mL, 0.31 μg/mL and 0.08 μg/mL for respectively PSE, TRI and PAR. The results obtained in this study showed that the proposed method was useful in routinely analysis of pharmaceuticals.
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