Madder is considered the queen of the reds which is one of the oldest used natural dyes. In this study, madder was applied to cotton and silk fabrics by using mordants in various ways to investigate the coloring effects. Alum and copper sulphate were used as mordants not only before and after dyeing process but also during the process. The aqueous extract of the dye was applied on the scoured c...

A reusable enzyme strip for the determination of cholesterol was prepared by co-immobilizing cholesterol esterase (CEase), cholesterol oxidase (COD) and peroxidase (POD) onto alkylamine glass beads affixed on a plastic strip by a nonreactive fixative. The co-immobilized enzymes retained 71.42% of initial activity of free enzymes with a conjugation yield of 11.0 mg g beads and showed optimum act...

Dye analysis can considerably enhance our understanding of the provenance materials used in production historical objects. Knowledge individual constituents any dyestuff not only facilitates its identification, but also provides important information regarding rate photo-degradation dye’s components; this turn support decisions conservation and display. This Technical Brief outlines principal a...

F. Ravelet, 2 R. Volk, A. Chiffaudel, F. Daviaud, B. Dubrulle, R. Monchaux, M. Bourgoin, 4 P. Odier, J.-F. Pinton, M. Berhanu, S. Fauve, N. Mordant, and F. Pétrélis Service de Physique de l’Etat Condensé, Direction des Sciences de la Matière, CEA-Saclay, CNRS URA 2464, 91191 Gif-sur-Yvette cedex, France Present address: Laboratory for Aero and Hydrodynamics, Leeghwaterstraat 21, 2628 CA Delft, ...

This paper reports the studies available on the characterization and chemical/biochemical analysis of natural dyes; extraction of colorants from different natural sources; effects of different mordants and mordanting methods; conventional and non-conventional methods of natural dyeing; physico-chemical studies on dyeing process variables and dyeing kinetics; development of newer shades and anal...

OBJECTIVES To document low/middle-income country (LMIC) health researchers' views about authorship, redundant publication, plagiarism and conflicts of interest and how common poor practice was in their institutions. DESIGN We developed a questionnaire based on scenarios about authorship, redundant publication, plagiarism and conflicts of interest. We asked participants whether the described p...

A lthough sound authorship of biomedical journal articles relies on personal and professional integrity and accountability, recent controversies concerning ghostwriting and guest authorship have shown that this approach has limitations. Ghostwriting and guest authorship are often linked to academic-industry collaborations. Typically, industrysponsored professional writers prepare complete artic...

Increasing environmental awareness has led to a growing interest in natural dyes the textile dyeing industry as consumers become more aware of toxicity synthetic that are harmful environment and health. Although environmentally friendly compared dyes, general their performance is less than dyes. Typically, metallic mordants used enhance affinity materials, perhaps this process breaks journey gr...