Formation
Mostrando 25-36 de 38380 artigos, teses e dissertações.
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25. Tuning the Photocatalytic Activity of Tin Oxide through Mechanical Surface Activation
Tin oxide (SnO2) nanoparticles were synthesized by the co-precipitation method and mechanically modified by high-energy ball milling. The experimental results demonstrate that the collision with zirconia balls produces slight changes in the crystalline, electronic, morphological, and surface properties of SnO2, which lead to an increase in the redox potentia
Journal of the Brazilian Chemical Society. Publicado em: 2022
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26. New Use of an Absorbable Adhesion Barrier (INTERCEED) for Temporary Diverting Ileostomy in Minimally Invasive Rectal Surgery
ABSTRACT Objectives Sometimes, severe adhesion occurs between the rectus abdominis muscle and the ileal intestinal limbs after temporary diverting ileostomy. This can make ileostomy reversal difficult. The aim of the present study is to assess whether absorbable adhesion barrier made of oxidized regenerated cellulose (INTERCEED) could contribute to improved
Journal of Coloproctology (Rio de Janeiro). Publicado em: 2022
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27. COMPREENDENDO OS MECANISMOS DE CORROSÃO DE LIGAS DE AL-CU-LI: UMA INVESTIGAÇÃO ATRAVÉS DE TÉCNICAS ELETROQUÍMICAS GLOBAIS E LOCAIS
In this study, the corrosion mechanism of an Al-Cu-Li alloy manufactured by two different treatment routes (T3 and T851) was evaluated by immersion and electrochemical tests in solutions containing chloride ions (Cl-). For both alloys, the formation of cavities on the surface was associated with micrometer-sized intermetallics (IM’s), however, in addition
Química Nova. Publicado em: 2022
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28. DIGEST Scale Predictis More Quality of Life Than PAS: The Residue Influence on Supracricoid Laryngectomy
Abstract Introduction Supracricoid laryngectomy (SCL CHEP) removes ~ 70% of the larynx, resulting in structural rearrangement and modification of the swallowing mechanism, promoting chronic dysphagia. One of the consequences of this new physiology is the formation of pharyngeal residues that can increase the possibility of aspiration. The formation of resid
International Archives of Otorhinolaryngology. Publicado em: 2022
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29. Antioxidant Properties of Croton zehntneri Pax et Hoffm. Essential Oil and Its Inclusion Complex with β-Cyclodextrin Prepared by Spray Drying
Croton zehntneri Pax et Hoffm. is a plant from Northeastern Brazil, whose main component of its essential oil is estragole. Its thermal instability and low aqueous solubility prevent its technological application. This study aimed to prepare and characterize the Croton zehntneri essential oil (CZEO) complexed with β-cyclodextrin (β-CD), and to evaluate ant
Journal of the Brazilian Chemical Society. Publicado em: 2022
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30. Formation of a new rural power structure and the failure of gender in utopia: lesbian image and its metaphors in Wildcat Lake
Resumo: Chen Yingsong criou Lago Gato Selvagem não apenas para contar uma história sobre lésbicas. Ao descrever como Xiang’er, uma mulher rural, torna-se lésbica nas aldeias, pode-se ver a “riqueza” e o “significado metafórico” do símbolo lésbico. No que diz respeito ao Lago Gato Selvagem, é mais interessante tratar como Xiang’er se torna
Trans/Form/Ação. Publicado em: 2022
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31. A Finite-Difference Time-Domain Formulation for Modeling Air Ionization Breakdown Streamers
Abstract A numerical model based on the finite-difference time-domain (FDTD) method is developed for calculating discharge currents and fields produced due air ionization between two electrodes. Electric conductivity σ of the ionized channel between two electrodes is calculated using non-linear equations, i.e., σ is obtained using functions of time. The fu
Journal of Microwaves, Optoelectronics and Electromagnetic Applications. Publicado em: 2022
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32. Manager Resilience and The Formation of Networks: Effects of the Strategic Priority of Innovation
Resumo Este estudo analisa a influência da resiliência do gestor na formação de redes sob o efeito moderador da prioridade estratégica de inovação. Uma survey foi realizada com gestores de empresas incubadas brasileiras, e a amostra compõe-se das 106 respostas válidas. Os dados são analisados por meio da modelagem de equações estruturais por mín
BBR. Brazilian Business Review. Publicado em: 2022
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33. Characteristics and utilization prospects of red ceramic waste in lightweight aggregates: a systematic review
Abstract Red ceramic waste (RCW) is one of the main by-products generated by the production of ceramic materials. Its application in lightweight aggregates (LWAs) has not yet been tested. Thus, this review intends to evaluate the perspectives of using RCW in the manufacture of LWAs. The search was carried out in the ScienceDirect database. 47 articles were s
Cerâmica. Publicado em: 2022
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34. Analysis of phosphorus recovery based on vivianite formation for practical applications
RESUMO O fósforo (P) é considerado um recurso não renovável. Dado seu consumo crescente na vida cotidiana, a “crise do P” é iminente. Para enfrentá-la, é urgente que novos recursos de P sejam encontrados. Este artigo resume o progresso das pesquisas sobre a recuperação de P baseada na formação de vivianita a partir de resíduos. Especificament
Engenharia Sanitaria e Ambiental. Publicado em: 2022
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35. Thermophysical and Transport Properties of the BaCl2-CsCl High Temperature Ionic Liquid Mixtures
High temperature ionic liquids (HTILs) densities and transport properties for mixtures BaCl2 CsCl, x(BaCl2) = 0-1, have been studied as a function of composition and temperature. In terms of Arrhenius theory, the temperature correlation of all measured properties was made and discussed. Thermodynamic properties (isothermal compressibility, molecular volume,
Journal of the Brazilian Chemical Society. Publicado em: 2022
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36. Thermostimulated crystal structure transformation of the polymineral clay submicron particles
Abstract Changes in the structure of phyllosilicate microparticles of submicron fractions of polymineral clay with an average size of 290 nm, as well as changes in the positions of impurity ions of transition metals in the crystal lattice, were studied by X-ray diffraction analysis, Fourier transform infrared spectroscopy, and high-resolution electron parama
Cerâmica. Publicado em: 2022