Leather Properties
Mostrando 1-12 de 12 artigos, teses e dissertações.
-
1. Incidence of hydrocolloid type on quality parameters in mango leathers (Mangifera indica L.) Yulima variety
Abstract The effect of four hydrocolloids on the physico-chemical, bioactive and rheological properties in sweetened mango leather sheets of the Yulima variety were analyzed. Parametric and non-parametric statistical tests were done to analyze the differences among samples (four of treatment against two of control). The findings show significant positive ef
Food Sci. Technol. Publicado em: 26/07/2018
-
2. The Effect of TiO2-SiO2 Nanocomposite on the Performance Characteristics of Leather
In this study the effect of TiO2-SiO2 nanocomposite on various performance characteristics of finished leather was investigated. For this purpose, TiO2-SiO2 nanocomposite was prepared via the sol-gel method from tetraethoxysilane (TEOS) and titanium n-butoxide (TBO) catalyzed with acid at ambient temperature. The prepared composite was applied by spraying on
Mat. Res.. Publicado em: 22/06/2017
-
3. Characterization and antimicrobial performance of nano silver coatings on leather materials
In this study, the characterization and the antimicrobial properties of nano silver (nAg) coating on leather were investigated. For this purpose, turbidity, viscosity and pH of nAg solutions prepared by the sol-gel method were measured. The formation of films from these solutions was characterized according to temperature by Differential Thermal Analysis-The
Braz. J. Microbiol.. Publicado em: 2015-03
-
4. Frog meat microbiota (Lithobates catesbeianus) used in infant food
Captive breeding of bullfrog (Lithobates catesbeianus) is of great economic potential, mainly for its thighs and leather. The nutritional quality of frog meat includes properly balanced amino acids with a protein profile of high biological value, low fat and low cholesterol, and high digestibility due to its short chain molecule structure. It is recommended
Food Sci. Technol. Publicado em: 25/02/2014
-
5. Effect of Chemically Treated Leather Shaving Addition on characteristics and microstructure of OPC mortars
The growing concern with environmental issues in tanneries and the search for a technological solution to their wastes are evaluated in this study. The leather shaving was chemically treated aiming the immobilization of the chromium ion on ordinary Portland cement (OPC) matrix. Cementitious mortars were obtained by adding different proportions of waste treat
Materials Research. Publicado em: 31/01/2012
-
6. Influência dos processos de engraxe e acabamento na modificação da estrutura e nas propriedades do couro
O estudo do colagênio na pele sobre sua estrutura e propriedades, composição e interações com substâncias levam a um maior entendimento das alterações químicas, micro e macroscópicas que ocorrem durante o processo de produção do couro. No processamento do couro são realizadas várias etapas que promovem a alteração da estrutura dérmica da pel
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012
-
7. Atividades mercantis do Rio Grande de São Pedro : negócios, mercadorias e agentes mercantis (1808-1850)
This thesis aimed to characterize the Rio Grande de São Pedro economy in the first half of the nineteen century through the analysis of its mercantile activity and investment pattern. It was investigated the businessmen (negociantes de grosso trato) acting and how the Cisplatine War and the Farrapos War affected the region trade and economy. It was establis
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2011
-
8. Estudo da interação de íons cobre e cromo com eletrodos de pasta de carbono modificada e polianilina em meio aquoso por técnica de voltametria de pulso diferencial / Modified Carbon Paste Electrodes and Polyaniline Electrodes: Study of their interaction with copper and chromium aquous metallic ions by Differential Pulse Voltammetry
The electrochemical sensors to measure metallic ions in water and waste water are among the most important areas of research nowadays. The environmental control and monitoring chalenges that stimulated the aim of this work are tanification for industrial leather finishing and cuprous and cupric organic and inorganic fungicides. The features for characterizat
Publicado em: 2010
-
9. PreparaÃÃo de carvÃo ativado e impregnaÃÃo com ferro ou cromo para aplicaÃÃes em processos de descontaminaÃÃo ambiental. / Preparation and impregnation of activated carbons with iron or chromium for aplication on environmental descontamination processes.
This work has five chapters, with objective of the preparation of activated carbons (AC) from agroindustrial residues (coffee hulls and wet blue leather) and preparation of catalysts using these AC for degradation of organic compounds. In the first chapter is showed a review from the literature about AC, the surface characterisitics and properties, the uses
Publicado em: 2008
-
10. Emprego do babaçu (Orbignya phalerata) como fonte energética para catetos (Tayassu tajacu). / Uses of babassu (Orbignya phalerata) to an energy source for peccaries (Tayassu tajacu).
The objective of this work was to study the use of integral babassu and its sub product (babassu meal), as an alternative energy source substituting part of corn on feeding of peccaries in captivity production systems. At the first phase of the work, experiment - I, the performance of 12 animals was evaluated where the integral babassu was tested as an alter
Publicado em: 2006
-
11. Natural rubber: leather composites
Leather is a fibrous protein consisting of collagen in a three dimensionally crosslinked network. Chrome tanning of leather improves the appearance of leather but at the same time emits both solid and liquid chrome leather wastes. Scrap rubber recycling using untreated and neutralized leather fibrous particles in natural rubber has been studied. Vulcanizatio
Polímeros. Publicado em: 2005-06
-
12. Molecular and Biotechnological Aspects of Microbial Proteases†
Proteases represent the class of enzymes which occupy a pivotal position with respect to their physiological roles as well as their commercial applications. They perform both degradative and synthetic functions. Since they are physiologically necessary for living organisms, proteases occur ubiquitously in a wide diversity of sources such as plants, animals,
American Society for Microbiology.