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Francisco A.B. Cunha,Edinardo F.F. Matias,Samuel V. Brito,Felipe S. Ferreira,João Marcelo A. Braga,José G.M. Costa,Henrique D.M. Coutinho 한국식품영양과학회 2011 Journal of medicinal food Vol.14 No.9
In this study, ethanol extracts of stems and leaves of Costus cf. arabicus L. were evaluated for antibacterial activity against multidrug-resistant strains of Escherichia coli and Staphylococcus aureus. The antibacterial and modulatory activities of the extracts were assayed by microdilution. The light-enhanced antibacterial activity was assayed by a light regimen. The growth of the bacteria tested was not inhibited by the extracts. The minimum inhibitory concentration values were ≥1,024 μg/mL. However, the antibiotic activity of aminoglycosides was synergistically enhanced when these extracts at subinhibitory concentrations were combined with the antibiotics. Also, both extracts showed activity against the wild-type bacterial strains, but the leaf extract was the more active extract, being active against both S. aureus and E. coli. Therefore, we conclude that the ethanol extracts of stems and leaves of C. cf. arabicus L. have potential light-induced antibacterial activity and synergistic antibiotic activity. This study showed that these extracts may be a promising source of antibacterial and modulatory agents.
Study on the behavior of beam-column connection in precast concrete structure
Marcela N. Kataoka,Marcelo A. Ferreira,Ana Lúcia H.C. El Debs 사단법인 한국계산역학회 2015 Computers and Concrete, An International Journal Vol.16 No.1
Due to the increase of the use of precast concrete structures in multistory buildings, this paper deals with the behavior of an specific type of beam-column connection used in this structural system. The connection is composed by concrete corbels, dowels and continuity bars passing through the column. The study was developed based on the experimental and numerical results. In the experimental analysis a full scale specimen was tested and for numerical study, a 3D computational model was created using a finite element analyze (FEA) software, called DIANA. The comparison of the results showed a satisfactory correlation between loading versus displacement curves.
Maria P. Volpato,Izabela C.A. Breda,Ravena C. de Carvalho,Caroline de Castro Moura,Laís L. Ferreira,Marcelo L. Silva,Josie R.T. Silva 사단법인약침학회 2020 Journal of Acupuncture & Meridian Studies Vol.13 No.2
The objective of this study was to evaluate if a single session of real or placebo cupping therapy in patients with chronic low back pain would be enough to temporarily reduce pain intensity and functional disability, enhancing their mechanical threshold and reducing local skin temperature. The outcome measures were Brief Pain Inventory, pressure pain threshold, RolandeMorris disability questionnaire and low back skin temperature. This is an experimental clinical trial; after examination (AV0), patients were submitted to real or placebo cupping therapy (15 minutes, bilaterally at the points BL23 (Shenshu), BL24 (Qihaishu) and BL25 (Dachangshu) and were revaluated immediately after the session (AV1) and after one week (AV2). The patients showeda significant improvement in all pain severity items and sleep in the Brief Pain Inventory (p < 0.05) and a decrease in disability in RolandeMorris disability questionnaire (p < 0.001). No significant differences were found in pressure pain threshold or skin temperature. No significant differences were found in any outcome of the placebo cupping therapy group. Thus, thecupping therapy is effective in reducing low back pain and decreasing disability after one single session but not in changing skin mechanical threshold or temperature.