Kin recognition and nepotism betwecn honcybee workers (Api.s metliferu L.) was analysed in a trophallactic bio-assay. Donor workers were fed dyed sugar syrup and introduced into a recipient group consisting of 1 2 to 1 5 workers of the same colony. After allowing for t hour of trophallaxii, the distribution of the dyed food was analysed with spectrophotometry. The subfamily composition in the r...

Natural dyes are gaining interest due their expected low risk to human health and to the environment. In this study, the wash fastness of a natural coloring matter from the liquid waste produced in the steam treatment of eucalyptus wood in textile fabrics was investigated. Specifically, eucalyptus wood extract was used to dye cotton, nylon and wool in an exhaust dyeing process without the addit...

A series of 4-hydroxyphenylazopyrazolopyrimidine disperse dyes were prepared via one-pot reactions of p-hydroxyphenylhydrazone, hydrazine hydrate, and acetylacetone or enaminones using microwave irradiation as an energy source. Structural assignments of the dyes were confirmed by X-ray crystallographic structure determination. Instead of discharging the dyebath after each dyeing cycle, the resi...

results two hundred eighty nine hiv infected patients were interviewed by the trainers, out of which 90.3% and 9.7% were male and female, respectively. most participants (47.8%) were in 30 - 39 years old age group. sixty two point two percent of participants experienced external stigma and 98.62% subjects reported internal stigma. significant associations between the cities and some items inclu...

introduction people suffering from psychiatric illness experience stigma as an unpleasant social construct. stigma has many damaging effects on the individuals, work, home-managing and social communications in these people. the main objective of this grounded theory study was to develop the perspectives of sufferers, their families, and healthcare team members about stigma in people with psychi...

This paper presents a model of cloth dyeing using the characteristics of the thread and weave pattern. The proposed dyeing model is based on Fick’s second law that defines the molecular transfer under translational diffusion [Fic85]. The algorithm in the proposed model calculates the dyeing distribution from parameters such as the amount of dyeing, saturated amount, and pressure in each cell on...

Natural dye extracted from Caesalpinia sappan Linn. was applied to a cotton fabric and silk yarn by dyeing process. The dyestuff component of Caesalpinia sappan Linn. was extracted using water and ethanol. Analytical studies such as UV–VIS spectrophotometry and gravimetric analysis were performed on the extracts. Brazilein, the major dyestuff component of Caesalpinia sappan Linn. was confirmed ...

Color of cloth dyed with Awa natural indigo is quantitatively compared with color of the cloth dyed with synthetic indigo. Results showed that: 1) color produced by Awa natural indigo is bluer and brighter than color produced by synthetic indigo; 2) a single Gaussian function fits the profile of the running of color produced by Awa natural indigo and the running of color produced by synthetic i...