Effect of ultrasound pre-treatment of hemp (Cannabis sativa L.) seed on supercritical CO2 extraction of oil.

Ultrasound pre-treatment of intact hemp seeds without any solvent assistance was carried out for 10, 20 and 40 min prior to SCCO2 extraction at 40 °C, 300 bar and 45 kg CO2/kg feed. Sonication time effect on SC-CO2 extraction was investigated by the extraction kinetics. The maximum extraction yield was estimated to be 24.03 (% w/w) after 10 min of ultrasonic pre-treatment. The fatty acid compositions of the oils extracted by SC-CO2 without and with ultrasound pre-treatments was analyzed using gas chromatography. It was shown that the content of linoleic, α-linolenic and oleic acids (the most abundant unsaturated fatty acids) of the hemp seed oils were not affected significantly by the application of ultrasound. UV spectroscopy indices (K232 and K268) and antiradical capacity were used to follow the quality of oils. Significant were the changes in their antiradical capacity due to ultrasound treatment. A comparison with the oil extracted by Soxhlet was also given.

Rejuvenescimento facial por intervenção miofuncional estética. Revisão integrativa / Facial rejuvenation by aesthetics myofunctional intervention. A integrative review

INTRODUÇÃO: As técnicas de rejuvenescimento facial tem se aperfeiçoado na busca pela saúde e melhora da aparência física. A intervenção miofuncional estética, um novo campo de atuação da Motricidade Orofacial, promove o rejuvenescimento com a suavização das rugas, sulcos e o equilíbrio da tensão muscular da face. Esse estudo propôs analisar o rejuvenescimento facial decorrente da intervenção miofuncional estética. MATERIAL E MÉTODOS: Trata-se de uma revisão integrativa da literatura realizada na Biblioteca Virtual em Saúde (BVS), no United States National Library of Medicine (PubMed) e no Portal de Periódicos da Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES), com publicações datadas entre 2001 e 2011. Foram encontrados 18 artigos, dos quais 06 atenderam aos critérios estabelecidos. Os dados coletados foram apresentados de forma descritiva. RESULTADOS: O rejuvenescimento facial foi representado por relatos de equilíbrio muscular e funcional, suavização das linhas de expressão, face descansada e harmônica, olhos mais abertos, redução de bolsas palpebrais e de medidas faciais, melhora do contorno facial e redução das olheiras, após a intervenção miofuncional estética. Houve a participação de profissionais e de pacientes na avaliação dos resultados da intervenção. Conclusão. Poucas são as publicações na área e apresentam, em comum, resultados que favorecem o rejuvenescimento facial e a participação dos pacientes e dos profissionais na avaliação dos resultados da intervenção. Pesquisas adicionais são necessárias para o aprofundamento do tema, de forma a contribuir para o conhecimento das suas técnicas, qualificar o serviço prestado e nortear condutas terapêuticas

INTRODUCTION: Facial rejuvenation techniques have been improved looking for the best health and physical appearance. The esthetics myofunctional intervention, a new field of procedure on orofacial motricity, promotes rejuvenation with the smoothing of wrinkles, furrows and balance of muscle tension of the face. This study proposes to analyze the facial rejuvenation resulting of esthetics myofunctional intervention. MATERIALS AND METHODS: This is an integrative literature review conducted in the Virtual Health Library (VHL), the United States National Library of Medicine (PubMed) and the Periodical Portal of the Coordination of Improvement of Higher Education Personnel (CAPES), with publications dating between 2001 and 2011. Were found 18 articles, which 6 of them attended the established criteria. The collected data were descriptively presented. RESULTS: There are few publications in this area and are characterized by studies with methodological shortcomings. The facial rejuvenation have been presented which criteria of muscular and functional balance, smoothing of wrinkles and harmonic facial expresion, more open eyes and improvement of facial contour after an aesthetic myofunctional intervention. Participation of different experts is mandatory for achieve a satisfactory results as well as the validation of these results by the patients. CONCLUSION: Facial rejuvenation, represented by the muscular balance, smoothing out fine lines, achive of an harmonious face, eyes more open, lower eyelid bags, improved facial contour and reduce dark circles, was noted by all patients and professional studies after esthetics myofunctional intervention. Additional research, using appropriate methodologies, are necessary for deepening on this subject, in order to contribute to the knowledge of these techniques

Antimicrobial activity of extractives of Solidago microglossa.

The antimicrobial activity of the methanol extract from Solidago microglossa roots, essential oil from its aerial part and some isolated compounds was investigated. The oil exhibited concentration-dependent activity against all the tested bacteria and yeasts.

Study on the antimicrobial activity of Hymatanthus sucuba.

The antimicrobial activity of Hyamatantus sucuba roots methanol extract, fractions prepared from this extract (n-hexane, CHCl(3), EtOAc, and n-butanol) and some isolated compounds were evaluated against some Gram(+) and Gram(-) bacteria and yeasts.

[Comparative study of tensile strength of enamel/resin/metal interface. Effect of bonding resins, retention mechanisms and metal alloys]. / Estudo comaprativo da resistência da união esmalt/resina/metal. Efeito de resinas de fixação, artifícios retentivos e ligas metálicas.

The purpose of this study was to compare the enamel/resin/metal bond tensile strength by using human canines, in which castings were bonded. These castings were obtained by Co-Cr or Ni-Cr alloys and showed four types of mechanisms of retention: 50 micrograms aluminum oxide abrasive, electrochemical etch, acrylic beads metal mesh. The castings were bonded utilizing Comspan Opaque and Panavia Ex. The specimens were subjected to tensile forces after 24 hours in an Instron machine. The castings subjected to 50 micrograms aluminum oxide abrasive and bonded utilizing Panavia EX showed the biggest bond tensile strength.