1. Ferrimagnetic to paramagnetic transition and dielectric relaxation in Ni1-xZnxFe2O4 ferrites

Abstract The spinel ferrite system Ni1-xZnxFe2O4 (x=0-0.7, Δx=0.1) was prepared by wet chemical co-precipitation method using sulfates of respective metal ions. The electrical resistivity and dielectric properties of the prepared samples have been studied as a function of temperature, frequency, and Zn content (x). The DC resistivity (ϱ) was measured in th

Cerâmica. Publicado em: 2021-06

2. NANOMATERIAIS PLASMÔNICOS: PARTE I. FUNDAMENTOS DA ESPECTROSCOPIA DE NANOPARTÍCULAS E SUA RELAÇÃO COM O EFEITO SERS

We perform an analysis of plasmonic nanomaterials in a two part review, the first of which constitutes the present work. Here, attention is given to the fundamentals of metal nanoparticle optical properties. It is discussed the principles regarding the excitation of localized surface plasmon modes in nanostructures of different sizes, shapes and surrounding

Quím. Nova. Publicado em: 2020-12

3. The brief psychotherapeutic intervention “relaxation, mental images and spirituality”: a systematic review

ABSTRACT BACKGROUND: The brief psychotherapeutic intervention “relaxation, mental images and spirituality” (relaxamento, imagens mentais e espiritualidade, RIME) is a form of complementary and alternative health-related therapy. It is a pioneer in the matter of relating the elements of spirituality to relaxation and to visualization of mental images.

Sao Paulo Med. J.. Publicado em: 2020-06

4. BACTERIAL NANOCELLULOSE BIOMEMBRANE AS A SUPPORT FOR HUMAN INSULIN AIMING AT TRANSDERMAL PERMEATION

Production of bacterial nanocellulose was pursued as a matrix system for the stabilization of human insulin. The biomembranes produced by Gluconacetobacter hansenii were washed with 2% aqueous sodium dodecylsulfate solution, rinsed with ultrapure water and immersed in 1 mol L-1 NaOH aqueous solution at 60 °C for 90 min until neutralization. For the insulin

Quím. Nova. Publicado em: 2020-05

5. Ruthenium(II)-mercapto Complexes with Anticancer Activity Interact with Topoisomerase IB

Herein we present four new ruthenium(II) complexes: [Ru(mtz)2(dppb)] (1), [Ru(mmi)2(dppb)] (2), [Ru(dmp)2(dppb)] (3), and [Ru(mpca)2(dppb)] (4), where mtz = 2-mercaptothiazoline; mmi = 2-mercapto-1-methyl-imidazole; dmp = 4,6-diamino-2-mercaptopyrimidine; mpca = 6-mercaptopyridine-3-carboxylic acid; dppb = 1,4-bis(diphenylphosphino)butane. In vitro cell cult

J. Braz. Chem. Soc.. Publicado em: 2020-03

6. JUDD-OFELT ANALYSIS OF Tb3+ AND UPCONVERSION STUDY IN Yb3+-Tb3+ CO-DOPED CALIBO GLASSES

We report on the study of the spectroscopic properties in Ytterbium-Terbium (Yb3+-Tb3+) co-doped calcium lithium borate (CaLiBO) glasses, with the study’s focus being on the upconversion process. Intensity parameters Ωλ for CaLiBO:Tb3+ are determined by the Judd-Ofelt method to be Ω2 = 15.5 × 10-20 cm2, Ω4 = 1.90 × 10-20 cm2 and Ω6 = 3.69 × 10-20 c

Quím. Nova. Publicado em: 2020-02

7. Academic performance and use of psychoactive drugs among healthcare students at a university in southern Brazil: cross-sectional study

ABSTRACT BACKGROUND: People have been using psychoactive substances for a long time. Over the last few years, this practice has spread among university students, who use these substances to improve their academic performance, relieve stress and increase concentration and memory. OBJECTIVES: To estimate the use of psychoactive drugs among healthcare stude

Sao Paulo Med. J.. Publicado em: 2020-02

8. Development and characterization of photoprotective formulations containing keratin particles

This work deals with development and evaluation of MFQ protective formulation, which contains two organic filters, namely: octyl-p-methoxycinnamate (OMC) and benzophenone-3 (BP-3); a photostabilizing agent called ethylhexylmethoxycrylene (EHMCR) and keratin particles. The MFQ formulation was evaluated in order to measure its pH, spin-spin lattice relaxation

Braz. J. Pharm. Sci.. Publicado em: 20/12/2019

9. Acupuncture in the treatment of temporomandibular muscle dysfunction

RESUMO JUSTIFICATIVA E OBJETIVOS: A disfunção temporomandibular consiste em dores não dentárias frequentes na região orofacial, de origem multifatorial e de tratamento interdisciplinar. Entre esses tratamentos está a acupuntura. O tratamento da disfunção temporomandibular atua tanto no relaxamento muscular quanto no controle da dor, sistemicamente b

BrJP. Publicado em: 02/12/2019

10. Evaluation of relaxant responses properties of cinnamon essential oil and its major component, cinnamaldehyde on human and rat corpus cavernosum

ABSTRACT Cinnamomum cassia (Cinnamon) is a well-known traditional medicine with therapeutic benefits for centuries. We evaluated the effects of cinnamon essential oil (CEO) and its main component cinnamaldehyde (CA) on human corpus cavernosum (HCC) and rat CC. The essential oil of cinnamon was analyzed for the confirmation of the oil profile. HCC specimens f

Int. braz j urol.. Publicado em: 07/11/2019

11. Flexure Based Energy Dissipating Device in Self-Centering Braces

Abstract Self-centering braces, in the current stage of development can accommodate large deformation and force levels. However, there is still a need for improvement of the energy dissipation mechanisms commonly incorporated in these braces. Yield based energy dissipation systems can overcome some of the problems faced with friction-based devices, such as s

Lat. Am. j. solids struct.. Publicado em: 28/10/2019

12. Demand relaxation in supplier selection processes

Resumo Os processos de seleção de fornecedores geralmente avaliam um conjunto de critérios afim de melhor atender uma demanda. Mas e se a própria demanda pudesse ser repensada, expandindo as possibilidades de aquisição? Quais os impactos em custo e utilidade de se comprar objetivos ao invés de materiais pré-determinados? Este trabalho introduz essa d

Gest. Prod.. Publicado em: 17/10/2019