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What is green fluorescent protein?

Green Fluorescent Protein (GFP) is a naturally fluorescent protein isolated from the jellyfish Aequorea victoria. GFP is a fluorescent marker that makes possible the visualisation of protein in the cell. Cells can be stained by them and examined by fluorescence microscopy to reveal the location of a protein of interest. For example, glucocorticoid receptor protein is a transcription factor that …

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What is Green Energy?

Green energy, or renewable / sustainable energy, is derived from a source which meets the needs of the present without getting depleted. Green energy is looked upon as the answer to climate change and as a saviour of the world. Sources of green energy – bio-fuels, solar power, wind power, wave power, geothermal power and tidal power – have begun …

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What is green chemistry?

Green chemistry, also called sustainable chemistry, is a philosophy of chemical research and engineering that encourages the design of products and processes that minimize the use and generation of hazardous substances. Whereas environmental chemistry is the chemistry of the natural environment, and of pollutant chemicals in nature, green chemistry seeks to reduce and prevent pollution at its source. In 1990 …

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What is Gradenigo’s Syndrome?

Gradenigo, an Italian otolaryngologist from the University of Naples, described this syndrome in 1904. Painful anaesthesia in the first division of the fifth cranial nerve supplying the forehead with sixth cranial nerve palsy occurs in this syndrome. It happens as a result of a lesion at the apex of petrous temporal bone outside the dura mater. It may be due …

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What is global cooling?

While many are aware of the dangers of global warming, not many know about global cooling. Scientists believe the cooling of the sun causes it. Global cooling is known for the absence of sunspot activity. According to the theory of global cooling, the sun had no sunspots between 2008 and 2009, while sunspot activity was at its peak in the …

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What is glass made of?

Glass is made of naturally from a fusions of silica (sand), soda and lime. This fusion can be achieved merely by lightning striking in a place where the right ingredients happen to be adjacent to each other. When glass is made by man, other ingredients are added, such as potash, lead oxide and boric oxide. Some of these ingredients are …

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What is glacier and how does it move?

Glaciers form when show piles up in mountain hollows, called cirques. The snow is gradually compacted into a white substance, halfway between snow and ice. As the pressure increases, the ice crystals become closely interlocked, while water, seeping down from above, refreezes and binds the crystals together. Finally, the compacted snow is pressed into clear blue ice. Exactly how ice …

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