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Retrospective study of osteoradionecrosis in the jaws of patients with head and neck cancer
Brena Rodrigues Manzano,Natá,lia Garcia Santaella,Marco Auré,lio Oliveira,Cá,ssia Maria Fischer Rubira,Paulo Sé,rgio da Silva Santos 대한구강악안면외과학회 2019 대한구강악안면외과학회지 Vol.45 No.1
Objectives: Osteoradionecrosis (ORN) is one of the most severe complications resulting from radiotherapy (RT) in patients with head and neck cancer (HNC). It is characterized by persistent exposed and devitalized bone without proper healing for greater than 6 months after a high dose of radiation in the area. To describe the profile and dental management of ORN in HNC patients undergoing RT in an oncological clinical research center. Materials and Methods: A retrospective descriptive study was performed to analyze dental records from HNC patients with ORN treated at an oncological clinical research center from 2013 to 2017. A total of 158 dental records for HNC patients were selected from a total of 583 records. Afterwards, this number was distributed to three examiners for manual assessments. Each examiner was responsible for selecting dental records that contained an ORN description, resulting in 20 dental records. Results: Mean patient age was 60.3 years with males being the most affected sex (80.0%). The most affected area was the posterior region of the mandible (60.0%) followed by the anterior region of the mandible (20.0%) and the posterior region of the maxilla (10.0%). The factors most associated with ORN were dental conditions (70.0%) followed by isolated systemic factors (10.0%) and tumor resection (5.0%). There was total exposed bone closure in 50.0% of cases. The predominant treatment was curettage associated with chlorhexidine 0.12% irrigation (36.0%). Conclusion: Poor dental conditions were related to ORN occurrence. ORN management through less invasive therapies was effective for the closure of exposed bone areas and avoidance of infection.
Trichuris vulpis (Froelich, 1789) Infection in a Child: A Case Report
Adrian Marquez-Navarro,Gudelio Garcia-Bracamontes,Blanca E. Alvarez-Fernandez,Luz P. Avila-Caballero,Isabel Santos-Aranda,Dylan L. Diaz-Chiguer,Rosa M. Sanchez-Manzano,Elvia Rodriguez-Bataz,Benjamin N 대한기생충학열대의학회 2012 The Korean Journal of Parasitology Vol.50 No.1
Fernando I. Ramírez-Paredes,Teresa Manzano-Muñoz,Juan C. Garcia-Prieto,Galina G. Zhadan,Valery L. Shnyrov,John F. Kennedy,Manuel G. Roig 한국생물공학회 2011 Biotechnology and Bioprocess Engineering Vol.16 No.6
A biosorption process has been developed for the bioremediation of heavy metal-contaminated acid drainages from Merladet and Faith open-cast mines,located in western Spain. The process is based on the physico-chemical properties for the adsorption, ion exchange, and complexation of metal ions by biopolymers (chitin and α (1,3) β-D-glucan) from industrial biowaste exhausted brewer's yeast (Saccharomyces cerevisiae L.). Firstly, the chemical composition (U, Mn, Al, Fe, Cu, Zn,and Ni) and the physico-chemical and ecological states of these acid mine drainages were characterised. Furthermore,the selectivity for Zn, Cu, Mn, Ni, and Al the first order kinetics and the performance of the metals biosorption process by exhausted brewer's yeast were evaluated with polluted acid synthetic waters and mine drainages. The biosorption equilibria were reached in 10 ~ 15 min following Langmuir type isotherms with higher affinity constants for metal-biosorbent binding for synthetic waters than for acid mine drainages. The efficiency of the process with real water samples was markedly lower for the case of Mn, and zero for Zn and Al. An antagonistic interference on the biosorption of a metal due to the presence of other metals is proposed. Finally, the ecotoxicity of the acid mine drainage was removed when it was incubated with brewer’s yeast trapped in polyurethane foam.