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An environment eco-friendly adsorbents such as filtrasorb-816 and filtrasorb-820 were used in this work. For the evaluation of the adsorption of manganese from the aqueous phase, granular activated carbons were used in conjunction with organic ligands such as 3,5-Dinitrobenzoic acid. The phenomenon of adsorption characteristics of manganese in an aqueous phase was studied at a constant temperature of 25 ±1°C and pH 5. Granular activated carbons were characterized by SEM analysis. Experimental data were tested by using Pseudo-first and Pseudo-second-order kinetic models. From the results, it was investigated that Pesudo-second-order data is more favorable than the pseudo-first-order for this system. The Langmuir, Freundlich, and Temkin isotherms models were used to describe the equilibrium characteristics of adsorption of Mn2+ onto activated carbon but the R² value of the Langmuir isotherm model was higher than other isotherms and hence it is the best fit. From this study, it was found that F-820 has more adsorption capacity to scavenge Mn2+ than F-816 from aqueous phase. [ABSTRACT FROM AUTHOR]

Aims: To compare and evaluate Candida removing effects of three most commonly available varieties of commercial denture cleansers from heat polymerized acrylic resins. To compare and evaluate Candida lytic effects of denture cleansers. To assess the effect of time on ability of denture cleansers in reducing Candidal biofilm. Materials and Methods: A specially designed metal mold was fabricated to obtain wax plates of uniform dimensions which were used to fabricate heat cure acrylic resin plates. A square-shaped window of dimension 15 mm and thickness of 1.5 mm was provided in metal mould to simulate thickness of denture base. All samples used in this study were prepared using this mould. Candida albicans colonies were then cultured on this acrylic resin plates by colonization assay. Yeast removing test for samples was performed using microscope and yeast lytic test was performed using photo colorimeter. Results: Denture cleanser D2 showed the highest Candida removing activity when compared with cleansers D1, D3, and control solution. Denture cleansers D2 showed increased yeast lytic ability when compared with denture cleansers D1, D3, and control solution. More time span shared a definite influence on yeast lytic ability of denture cleansers. Conclusions: The effect of cleansing agents on removal of colonized yeasts particularly fungal biofilm from acrylic resins was assessed for clinical implications. The observation indicated superior performance of cleanser D2 when compared with D1 and D3 even though they all belong to same chemical group of alkaline peroxide. The increased effectiveness may be due to presence of sodium lauryl sulphate in formula of D2.

Motivado por investigaciones recientes en la literatura, se introduce un marco general para una clase de funciones -invex n-set de orden superior y se exploran algunos resultados sobre condiciones de epsilon-optimalidad para objetivos multiples fraccionales de subconjuntos de programación. Los resultados obtenidos son de naturaleza general, dado que generalizan y unifican resultados sobre invexity generalizada e invexity generalizada de orden superior en el contexto de la programacion multiple fraccionaria.Motivated by the recent investigations in literature, a general framework for a class of -invex n-set functions of higher order is introduced, and then some results on the e-optimality conditions for multiple objective fractional subset programming are explored. The obtained results are general in nature, while generalize and unify results on generalized invexity as well as on generalized invexity of higher order to the context of multiple fractional programming.

General framework for the generalized proximal point algorithm, based on the notion of (H,r)- monotonicity, is developed. The linear convergence analysis for the generalized proximal point algorithm to the context of solving a class of nonlinear variational inclusions is examined, The obtained results generalize and unify a wide range of problems to the context of achieving the linear convergence for proximal point algorithms.Se desarrolla un marco general para el algoritmo de punto proximal generalizado, basado en la noción de (H,r)- monotonia. Se examina el analisis de convergencia lineal para el algoritmo de punto proximal generalizado en el contexto de la resolucion de una clase de inclusiones no lineales variacional. Los resultados obtenidos generalizan y unifican una amplia gama de problemas en el contexto de lograr la convergencia lineal de los algoritmos punto proximal.

First, general frameworks for the first-order evolution inclusions are developed based on the A-maximal relaxed monotonicity, and then using the Yosida approximation the solvability of a general class of first-order nonlinear evolution inclusions is investigated. The role the A-maximal relaxed monotonicity is significant in the sense that it not only empowers the first-order nonlinear evolution inclusions but also generalizes the existing Yosida approximations and its characterizations in the current literature.

First a general framework for the Yosida approximation is introduced based on the relative H-maximal monotonicity model, and then it is applied to the solvability of a general class of first-order nonlinear evolution equations. The obtained results generalize and unify a wide range of results to the context of the solvability of first-order nonlinear evolution equations in several settings.

Background: Dentists are always looking ahead for more dimensionally stable material for accurate and successful fabrication of prosthesis in this competitive world. Arrival of newer materials and increased material market puts dentists in dilemma for selection of material. Aim: The study evaluated the effect of variations in time of pour and temperature on dimensional stability of three brands of commercially available alginates. Materials and Methods: Velplast, Marieflex & Zelgan alginate impression materials were evaluated by measuring dimensional accuracy of the master cast. A die was prepared and mounted on the apparatus for the ease of impression making. The prepared casts were categorized into five groups and made up of three brands of alginate impression material with variation in time of pour viz: immediate, 20&40 minutes interval and with varying temperature of 250 C, 300 C & 400 C. Results: Impressions showed least distortion at varying degrees of temperature for 20 minutes, but the values obtained by storing of alginate impressions for 20 minutes at 300 C were found to be nearly accurate than the values obtained by storing of impression at 400 C. However, storing showed shrinkage of impressions. Conclusion: Marieflex showed better accuracy in comparison with other two materials. Maintenance of temperature and humidity play key role during storage & transport to prevent distortion. But the study suggests immediate pouring which will minimize the distortion. The manipulation instructions, temperature of mixing water, environment & water powder ratio also plays key role in minimizing the distortion.