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Conocarpus erectus L., a plant with a high content of structural sugars, ions and phenolic compounds, shows antioxidant and antimicrobial properties promoted by different organic fractions

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Asian Pacific Journal of Tropical Biomedicine 2018年第9期8卷 463-470页

作者： Dayane Kelly Dias do Nascimento Santos Weslley Henrique de oliveira Melo Anastassia Mariáh Nunes de oliveira Lima Iranildo Joseda Cruz Filho Glaucia Manoella de Souza Lima tulio Diego da Silva Maiara Celine de Moura Marcia Silva do Nascimento Ana Maria Souto Maior Thiago Henrique Napoleao Cristiane Moutinho Lagos de Melo department of Biochemistry Biosciences Centre Federal University of Pernambuco department of Antibiotics Biosciences Centre Federal University of Pernambuco Center of Strategic Technologies of the Northeast

Objective: To evaluate the structural and chemical composition of plant and the antioxidant and antimicrobial activities promoted by hexanic, ethanolic and ethyl acetate fractions obtained from leaves of Conocarpus ***: Organic fractions were characterized through UPLC-MS and *** potential was performed through DPPH and molybdenum phosphate *** and antifungal assays were performed in accordance with Clinical and Laboratory Standards Institute ***: The obtained biomass of Conocarpus erectus leaves showed the high presence of glucose(0.45 g/L), cellulose(28.69%), Na(55.126 μg/L) and K(31.163 μg/L).We identified seven compounds in the hexanic and ethyl acetate fractions, and eight compounds in ethanolic ***, phenolic compounds are prevalent in all organic fractions with values of(10.04 ± 0.24),(221.26 ± 1.84),(340.53 ± 0.84) mg/g GAE to hexanic, ethyl acetate and ethanolic fraction, *** results showed a high potential in ethyl acetate fraction(71.82 ± 6.87)% and(10.89 ± 0.05)% in DPPH and molybdenum phosphate techniques, *** ethanolic fraction showed moderate bacteriostatic and bactericidal activity against Staphylococcus aureus and presented a high fungistatic potential for all Candida species ***: Organic fractions obtained from leaves of Conocarpus erectus present antimicrobial and antioxidant properties, and these findings contribute to scientific information for the effectiveness on use of this plant in the development of a phytotherapic compound.

关键词： Combretaceae Phenolic compounds Antimicrobial activity Antioxidant

Cementitious Composites Containing Multifunctional Sugarcane Fibres

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Journal of Building Material Science 2019年第2期1卷 1-8页

作者： Viviane VSGuilarduci Patricia Benedini Martelli Honória de Fátima Gorgulho Pablo Resende oliveira tulio Hallak Panzera Núcleo de Ambiente Saúde e SegurançaIF Sudeste MGSão João del-ReiBrazil department of Natural Sciences–DCNAT Federal University of São João Del-Rei-UFSJBrazil Centre for Innovation and Technology in Composite Materials–CITeC Department of Mechanical EngineeringFederal University of São João Del-Rei-UFSJBrazil

This work investigates the reuse of natural(SCB)and minopropyltriethoxysilanemodifed(MSCB)sugarcane bagasse fbres in cementitious *** bagasse fbres are pre-used in the treatment of motor oil contaminated effluents.A full factorial design is used to identify the effects of fbre type(SCB and MSCB),fbre length(0.6 and 1.2 mm),fbre amount(1 and 2 wt%)and fbre condition(before and after oil filtration)on apparent density,water absorption,apparent porosity,ultra-pulse velocity,dynamic modulus,flexural strength and *** fibres lead to increased apparent density compared to MSCB fibre reinforced *** fibres contribute to reduce composite porosity,leading to higher mechanical *** smaller area of MSCB fibres promotes a larger amount of cementitious phase per unit volume,thus increasing the strength of the *** sugarcane fbres(1.2 mm)have a larger surface area,leading to a higher fibre concentration per unit volume,which increases water *** amount of fibre has no significant effect on mechanical and physical *** made with 2 wt%0.6 mm long MSCB fibres achieve promising results for non-structural civil engineering applications.

关键词： Sugarcane bagasse Treatment of effluents Chemical treatment Cementitious composites Mechanical properties Non-destructive test design of experiment

On the Bump Tests of Cracked Shafts Using Acoustic Emission Techniques

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Engineering（科研） 2016年第9期8卷 572-581页

作者： Gilberto Luiz S. Pimentel-Junior Frederico B. oliveira Marco tulio C. Faria department of Mechanical Engineering Universidade Federal de Minas Gerais Belo Horizonte Brazil

An investigation about the application of Acoustic Emission (AE) techniques to analyze the dynamic response of different cracked shafts rendered in bump tests is presented in this work. The experimental apparatus devised for this work complies of six shafts with different transverse crack sizes and a high-frequency data acquisition system. The AE signals generated in the bump tests performed on the different cracked shafts are captured by a wideband AE transducer. Those signals are treated by using statistical moments, wavelet transforms, and frequency- and time-domain procedures. A transverse crack of predetermined depth is etched into each shaft. The experimental results show that the values of kurtosis and skewness estimated for the AE signals can be used to identify the crack size.

关键词： Acoustic Emission Cracked Rotors Bump Tests Shaft Crack

Evaluation of Quality of Life and Oral Changes of Patients in Head and Neck Radiotherapy: Observational Study

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Journal of Cancer Therapy 2021年第11期12卷 641-653页

作者： Emilly Silva e Silva Gerlane Lima oliveira Ana Carolina Carneiro Cardoso Isabella Melo Brito Ferreira Marco tulio Brazão-Silva Douglas Magno Guimarães dental School Pará University Center Rua Nove de Janeiro Belém Pará Brazil dental School Montes Claros State University Montes Claros Minas Gerais Brazil

Radiotherapy (RT) in the head and neck, despite coming from technological evolution, is challenged by the acute and late side effects of local irradiation, including permanent loss of saliva, osteoradionecrosis, dental caries induced by radiation and necrosis of the oral cavity, mucositis, xerostomia and secondary infections like candidiasis. Since these manifestations are limiting and the integrity of the vital organs contemplates the patient’s general health status, the oral health-related quality of life (OHRQoL) can be significantly affected by the treatment of head and neck cancer (HNC), since cancer can cause important changes in vital functions related to communication, food and social contact, causing disturbances in the patient’s life. An observational and longitudinal study was carried out with 16 cancer patients submitted to RT in the head and neck, between the years 2019-2020 with the objectives of collecting clinical and epidemiological data on the main oral changes caused by RT in the head and neck and correlating them with the impact on OHRQoL. To analyze the OHRQoL, the University of Washington’s Quality of Life Assessment questionnaire (UW-QOL) was applied once a week for 4 weeks and to observe oral manifestations, a dental clinic file standardized by the researchers was applied. The main oral manifestations clinically observed were hyposalivation, trismus and oral mucositis. The UW-QOL presented pain, chewing and taste as the main complaints reported by patients, however, appearance, salivation and chewing showed statistically significant differences over the weeks. The main manifestations observed were hyposalivation, trismus and oral mucositis, the physical limitations resulting from these manifestations i

关键词： Adverse Reactions Head and Neck Neoplasms Radiotherapy

Global Warming and the Power-Laws of Ecology

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Atmospheric and Climate Sciences 2012年第1期2卷 8-13页

作者： Joao D.T.Arruda-Neto Maria C.Bittencourt-oliveira Alrenice C.Castro tulio E.Rodrigues Joseph Harari Joel Mesa Godofredo C.Genofre Physics Institute University of Sao PauloSao PauloBrazil CEPESq/UniItalo Italy-Brazilian University CenterSao PauloBrazil Laboratory of Cyanobacteria ESALQUniversity of Sao PauloPiracicabaBrazil PROCAM Interdisciplinary Graduate Program on Environmental SciencesUniversity of Sao PauloSao PauloBrazil Institute of Oceanography University of Sao PauloSao PauloBrazil Institute of Biosciences Sao Paulo State UniversityBotucatuBrazil Institute of Biosciences University of Sao PauloSao PauloBrazil

A model based on Watson’s power law for the species-area relationship predicts that full global warming, projected up to the year 2050, could provoke the disappearance of roughly one-quarter of existing species. Here, an alternative approach is worked out, based on the combination of two ecology laws: Taylor and Watson’s power laws, where the former relates species variability with their mean abundance. Just how severely global warming would affect not only the number but the diversity of the surviving species is addressed by this approach, while at the same time giving indications for the post-disaster fate of the remaining species (extinction or recovery).

关键词： Global Warming Species Extinction Ecology Power-Laws Species Variability Model