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Modelling eggshell maculation

Posted on 24. November, 2015.

The great diversity of avian eggshell pigmentation and its possible adaptive significance has fascinated biologists for over a century. Ancestrally, avian eggshells were most likely homogenously white and immaculate although not necessarily devoid of pigment. Since then, however, they have evolved remarkable variation in both the basal ground colour and in the presence and patterns of superficial pigmentation, or maculation, which can include speckles, spots, blotches and streaks.

Mechanistic investigation of the electrooxidation of catechols in the presence of N-methylbenzylamine at room temperature:synthesis of new quinone derivatives 

Posted on 25. February, 2015.

The term quinone refers generally to a 1,4 or 1,2-diketone formally derived from dihydroxy aromatic compounds in which the two carbonyl groups are connected by a system of conjugated double bonds. Naturally-occurring quinones have attracted attention, because of their bright colour with possible uses as dyes and as drugs.

Endophytes – the chemical synthesizers inside plants - A Free Review

Posted on 24. February, 2015.

Endophytes are microbial entities that live within living tissues of plants.
In most cases their relationship with the host plant is symbiotic and probably mutualistic. Many are capable of synthesizing bio-active compounds that can be used by the plant for defense against pathogenic fungi and bacteria. Some of these compounds have proven useful for novel drug discovery.

Biology of the gastro-intestinal tract in poultry

Posted on 24. February, 2015.

The gastro-intestinal tract is important for digestion and nutrient absorption. In poultry, it also poses major metabolic demands. For instance in the chicken, the gastro-intestinal tract represents only 1.5% of the body weight but requires 8% of the energy metabolised.

Eco-friendly mono-1,4-hydrocyanation of diarenyl ketones using potassium hexacyanoferrate(II) as a cyanide source

Posted on 24. February, 2015.

The conjugate hydrocyanation of α,β-unsaturated ketones is an important C–C bond forming reaction in synthetic organic chemistry, which can produce significant β?cyano ketones.

Thermal decomposition and kinetic studies of solid riboflavin using model-free methods

Posted on 21. February, 2015.

Riboflavin (vitamin B2) has conjugated double bonds and nitrogen in its ring structure and commercially can be produced by chemical synthesis or microbial fermentation. It is present in most living systems, and in milk, eggs, meat products and vegetables which are essential for normal growth and development of the body, production and regulation of essential hormones, and formation of red blood cells.

Designer life using synthetic biology

Posted on 21. February, 2015.

Look anywhere on land or in the oceans and you will find a multitude of living creatures – plants and animals of all shapes and sizes – roughly 8.7 million eukaryotic species, give or take a million or so.

Then look closer, because most life is invisible to the human eye. A light microscope will reveal the bacteria; an electron microscope, the viruses. These organisms are everywhere.

Seabird embryos as biomonitors of micronucleogenic genotoxic agents: potential application for the coasts of Mexico

Posted on 19. February, 2015.

A genotoxic agent is a compound that has the potential to alter genetic material, either directly or by activating toxic metabolic mechanisms. These agents include a great variety of elements and chemical compounds, such as heavy metals, pesticides and petroleum derivatives

Efficient, one-pot synthesis of polyfunctionalised octahydroquinazolin-2,5-diones catalysed by Fe3O4 nanoparticles

Posted on 12. February, 2015.

In recent years, multi-component reactions (MCRs) have been developed as economic methods for the synthesis of important medical and industrial compounds. MCRs are convergent reactions, in which three or more starting materials react to form a product, where basically all or most of the atoms are retained. They have become important procedures for the synthesis of structurally complex compounds in addition to drug-like molecules.