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YbF_3/SiO_2 Fillers as Radiopacifiers in a Dental Adhesive Resin

Nano-Micro Letters 2012年第3期4卷 189-196页

作者： Neftali L.V.Carreno Thiago C.S.Oliveira Evandro Piva Fernanda B.Leal Giana S.Lima Marcelo D.Moncks cristiane w.raubach Fabricio A.Ogliari Technology Development Center Engineering of MaterialFederal University of Pelotas Biomaterials Development and Control Center School of DentistryFederal University of Pelotas Department of Analytical and Inorganic Chemistry IQGFederal University of Pelotas

The objective of this study was to evaluate the effect of functionalizing a dental adhesive resin with YbF_3/SiO_2 fillers for use as *** of YbF_3/SiO_2 were obtained with the high-energy mechanical milling method and characterized by both physical and chemical *** characterization,the particles were sieved and silanized prior to being incorporated into an adhesive *** stability of the particle suspension was then *** light activation,the radiopacity,degree of conversion,flexural strength and elastic modulus were *** dental adhesive resins with 10 and 15 wt% of filler provided satisfactory radiopacity,while flexural strength and elastic modulus were not *** degree of conversion was statistically lower than that of the control(pwt% was shown to be feasible for the development of a radiopaque dental adhesive system.

关键词： Radiopacifier YbF3/SiO2 Dental adhesive resin Composite

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Fluid-dynamics evaluation in a conical spouted bed and characterization of foxtail millet seeds

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Particuology 2015年第6期13卷 75-81页

作者： Lidiane Diniz do.Nascimento Lorena Gomes Corumba Sandra Cristina dos Santos Rocha Osvaldir Pereira Taranto cristiane Maria Leal Costa Lenio Jose Guerreiro de Faria Federal University of Pard Faculty of Chemical Engineering Laboratory of Drying and Particle Coating Augusto Correa Street w/n 66075-110 BelemPA Brazil University of Campinas School of Chemical Engineering. Albert Einstein Avenue 500 13083-852 Campinas $8o Paulo Brazil

Foxtail millet （Setaria italica） is one of the most valuable species in economic terms in the genus Setaria and plays an important role in human nutrition, animal feed, and agriculture. The present study described chemical, physical, and quality aspects of seeds of foxtail millet. Furthermore, the fluid-dynamic behavior of the seeds was evaluated in a conical spouted bed, which has advantages in terms of promoting the cyclic and regular movement of the seed particles. Dynamic parameters of spouting （minimum spouting veloc- ity, stable and peak pressure drop） were determined and compared with those obtained from empirical correlations available in the literature. The results obtained from physical characterization showed that the seeds can be classified as belonging to Group D of Geldart, having a non-rough surface, mean diameter of 1.75 mm, and sphericity of 0.74. Fluid-dynamics analysis showed that the seeds are suitable for processing in a spouted bed, which is in agreement with the results of particle physical characterization.

关键词： Foxtail millet Parameters of spouting Characterization Conical spouted bed

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Interaction of Seedling Germination, Planting Date, and Flumioxazin on Peanut Physiology under Irrigated Conditions

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American Journal of Plant Sciences 2020年第12期11卷 2012-2030页

作者： Nicholas L. Hurdle Timothy L. Grey cristiane Pilon w. Scott Monfort Donn G. Shilling Department of Crop and Soil Sciences University of Georgia Tifton GA USA

Diclosulam and flumioxazin applied preemergent (PRE) results in direct peanut exposure to these herbicides prior to seedling emergence. Flumioxazin has been reported to induce injury in adverse weather (i.e. cool-wet soil conditions) at crop emergence. Research at Ty Ty and Plains, Georgia evaluated the physiological effects of PRE herbicides to emerging peanut in 2018 and 2019. Peanut seed with variable germination and different planting dates were evaluated as additional factors. Peanut plant physiological measurements included electron transport (ETR), net assimilation rate (Anet), quantum yield of PSII (ΦPSII), and stomatal conductance to water vapor (GSW). Data were obtained from V3 to R1 peanut growth stages using a LiCOR 6800, along with stand counts and plant width measures. In 2018, diclosulam reduced peanut ETR when measured across multiple growing degree days (GDD) after planting, compared to the nontreated control (NTC). Flumioxazin reduced peanut ETR compared to the NTC, at several sample timings for each planting date. In 2018 and 2019 at both locations, flumioxazin impacted Anet less than ETR, but was consistently similar to/or greater than the NTC. Peanut ΦPSII responded similarly as Anet at each location and yr. GSW was variable in both years<

关键词： Diclosulam Flumioxazin Peanut Arachis hypogaea L. Photosynthesis Electron Transport

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