Many studies were conducted to maintain the environment by reducing waste, especially pineapple peel waste. This study aims explore effect of various pressure homogenization process on bacterial cellulose membrane surface morphology and structure produced using extract The methods include preparation pellicle samples from product fermentation Acetobacter xylinum a medium Bacterial pellicles cru...

Background: Busulfan is a chemotherapy drug that is widely used for cancer treatment. However, administration of busulfan to male patients with malignant diseases may cause temporary or permanent sterility. Therefore, research into drugs or Materials to reduce the side effects of busulfan on the male reproductive system is necessary. In the present study the protective effects of L-carnitine an...

In this brief note, we present an approach that combines the three classical techniques in structural optimization, i.e. the boundary variation, the topological and the homogenization methods. As a first test of this method, we apply it to the compliance optimization in R .

In Paraguay, research on arsenic contamination is still incipient. This study aimed to validate the analytical method for determination of total in soil samples by atomic absorption spectrophotometry with a hydride generation (HG - AAS). For its validation, blank sample was collected from an area null anthropogenic activity and, application, ten Tebicuary River basin. The were dried, sieved, ho...

Herbicide residue analysis has gained importance worldwide, mainly for food quality control to minimize potentially adverse impacts on human health. A Gas chromatography-tandem mass spectrometry (GC-MS) method quantitative of acetochlor and s-metolachlor in maize soybean straw been developed, validated applied analyze the residues anilide herbicides. Straw material was dried, homogenized extrac...

In this paper we make a comparison between the two-scale asymptotic expansion method for periodic homogenization and the so-called Bloch wave method. It is wellknown that the homogenized tensor coincides with the Hessian matrix of the first Bloch eigenvalue when the Bloch parameter vanishes. In the context of the two-scale asymptotic expansion method, there is the notion of high order homogeniz...