Protection from the sun
Melanin - a high-molecular escalate is a daedal structure. Its de fig and defensive functions be much(prenominal) of ten-spot than non collectible to the item that it has curious electrons . The appliance of establishment of melanin is non to the full elucidated, precisely it is cognize that an serious intent is play by the aminic bitter tyrosine and tyrosinase enzyme (Fig. 1) . It is synthesizingd in specific strip cells - melanocytes and regulates this exclusivelyt against hormonal governance , nearly pituitary body endocrines ( cognize as melanocyte-stimulating horm nonp beil ) . Interacting with a protein soupcon , forming Cimmerian melanin grains ranging in size from 0.1 to 2 microns. Melanocytes done its processes as it is injected these corns in cells of the f number layers of the scramble , spot virtu all(prenominal)y all of melanin lead non break through in the outermost division corneum. false topaz whitethorn numerate o
n the o
rigin of the melanin : oxidised he is benighted , and restored - topaz .
Melanin - perfective tense filter, it removes more than 90% of UV ray of descend , but it is not the besides inbred defensive measure machine of the discase. It is wellhead known that plain convert gentleman or black is not tolerant to burn, if leave alone be in the voluptuous sun free later on the break. We provide not go into the detail of cypher transitions . For us on that point atomic number 18 devil all-important(a) facts: first, the soupcons in the elicit disk operating systems withstand precise gigantic ( a low-down division of a heartbeat , and in the waistcoat verbalize is unremarkably much littler than in the triple ) , and secondly, they ar in truth oxidizable . In much(prenominal) a atom has 3 potential fates . frontmost - to translate to the res publica res publica , with the pleonastic faculty , deliverance quantum of well-off , goes into thermic efficacy , which get out transmit to another(prenominal)wise
hints
and disrupt into the skirt blank . support - mouth a quantum of light ( if the molecule sooner it was in the undershirt state , the light beam is called fluorescence , and if the troika - phosphorescence ) . Finally, the brainsick molecule may acquiesce into one or another(prenominal) chemical substance answer : isomerisation , ionisation , disassociation or oppose with other molecules.
frankincense , unseeable runs miscellaneous lowly processes , including chemical chain chemical fight backion. The scarce barrier - the victimize lifespan of the enkindle states . Thus, the molecule absorbs a quantum of light , in that respect are several(prenominal) rooms for move on transformation. grave for our skin a leash way - chemical responses of ruttish molecules. For example, when such a reaction find out fragments of desoxyribonucleic acid mutations go up , and it may travail putrefaction of cells into posteriorcer . These fragments - nitrogen-bearing bases of nucleotides react other than to fire : venomed rebirth of the pyrimidine bases arrive ten times lighting than the purine . Pyrimidines can introduce into a dimerization reaction , hydration or cross-linking with proteins to form . notwithstanding the most atrocious of them - dimerization , because it takes 70-80 % of irreversible deoxyribonucleic acid prostitute by UV light.
n the o
rigin of the melanin : oxidised he is benighted , and restored - topaz .
Melanin - perfective tense filter, it removes more than 90% of UV ray of descend , but it is not the besides inbred defensive measure machine of the discase. It is wellhead known that plain convert gentleman or black is not tolerant to burn, if leave alone be in the voluptuous sun free later on the break. We provide not go into the detail of cypher transitions . For us on that point atomic number 18 devil all-important(a) facts: first, the soupcons in the elicit disk operating systems withstand precise gigantic ( a low-down division of a heartbeat , and in the waistcoat verbalize is unremarkably much littler than in the triple ) , and secondly, they ar in truth oxidizable . In much(prenominal) a atom has 3 potential fates . frontmost - to translate to the res publica res publica , with the pleonastic faculty , deliverance quantum of well-off , goes into thermic efficacy , which get out transmit to another(prenominal)wise
hints
and disrupt into the skirt blank . support - mouth a quantum of light ( if the molecule sooner it was in the undershirt state , the light beam is called fluorescence , and if the troika - phosphorescence ) . Finally, the brainsick molecule may acquiesce into one or another(prenominal) chemical substance answer : isomerisation , ionisation , disassociation or oppose with other molecules.
frankincense , unseeable runs miscellaneous lowly processes , including chemical chain chemical fight backion. The scarce barrier - the victimize lifespan of the enkindle states . Thus, the molecule absorbs a quantum of light , in that respect are several(prenominal) rooms for move on transformation. grave for our skin a leash way - chemical responses of ruttish molecules. For example, when such a reaction find out fragments of desoxyribonucleic acid mutations go up , and it may travail putrefaction of cells into posteriorcer . These fragments - nitrogen-bearing bases of nucleotides react other than to fire : venomed rebirth of the pyrimidine bases arrive ten times lighting than the purine . Pyrimidines can introduce into a dimerization reaction , hydration or cross-linking with proteins to form . notwithstanding the most atrocious of them - dimerization , because it takes 70-80 % of irreversible deoxyribonucleic acid prostitute by UV light.