In a feather, there are distinct morphologies along the proximal-distal axis. The proximal part is a cylindrical stalk (calamus), whereas the distal part has barb and barbule branches. Here we focus on what molecular signaling activity can modulate feather stem cells to generate these distinct morphologies. We demonstrate the drastic tissue remodeling during feather cycling which includes initi...

Abstract The morphological differences between the sexes of a species is relevant to its captive breeding, ethology, and eco-biology are studied extensively in fishes. In this paper, we analyzed sexual dimorphism cyprinid Nilgiri melon barb, Haludaria fasciata (Jerdon), their external structures, size, shape. Physical examination, microscopical analysis, morphometric geometrical analyses both f...

The feathers of Amazon parrots are brightly coloured. They contain a unique class of pigments, the psittacofulvins, deposited in both barbs and barbules, causing yellow or red coloured feathers. In specific feather areas, spongy nanostructured barb cells exist, reflecting either in the blue or blue-green wavelength range. The blue-green spongy structures are partly enveloped by a blue-absorbing...

I show that the presence of informed buyers is necessary but not always su cient for producers to use prices as signals of product quality. A su ciently high fraction of informed buyers eliminates the lemons problem. A small fraction of informed buyers mitigates the lemons problem, provided that buyers' prior belief of high quality is su ciently pessimistic : price reveals high quality at a sig...

The aim of the present investigation was to assess and compare the antimicrobial activities of the lemon (Citrus sinensis) peel extract and lemon oil against common food borne pathogens and to study their potential as food bio-preservatives. The antagonistic activity of lemon peel extract and lemon oil was studied against common food borne pathogens like Staphylococcus aureus, Staphylococcus ep...

The effect of apple and lemon on lipid profile was studied. Forty-five people with hyperlipidaemia were selected. The forty-five respondents were randomly assigned to three groups. The first group was given an apple a day the second group one lemon drink per day, the third group was given the combination of an apple and a lemon per day. Three other variables were noted namely diet, exercise, an...

this study was aimed to investigate some feeding characteristics of kura barb (barbus lacerta) from bibi-sayydan river of semirom, isfahan. for this purpose, during august 2010 to july 2011, some 445 specimens of the kura barb fish were caught using a seine net and a cast net and transferred to the fisheries laboratory on ice for further examinations. the results showed that the condition facto...

Chronic excessive alcohol consumption (more than 40-80 g/day for males and more than 20-40 g/day for females) could induce serious liver injury. In this study, effects of lemon juice on chronic alcohol-induced liver injury in mice were evaluated. The serum biochemical profiles and hepatic lipid peroxidation levels, triacylglycerol (TG) contents, antioxidant enzyme activities, and histopathologi...

One of the primary ways to enhance heat transfer rate is to use extended surfaces or fins. The heat transfer mechanism of fin is to conduct heat from the heat source to fin surface by its thermal conduction, and then dissipates it to surrounding medium by convection. Most common application areas of fins are in combustion engines, heat exchangers and cooling of electronic equipments. Early stud...