نتایج جستجو برای: substitution
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Heme oxygenase-2 (HO-2) is a critical antioxidative stress enzyme found in endothelial cells and adventitialnerves. This enzyme in conjunction with other HOs (1 and 3) metabolize heme molecule into ferrous iron,carbon monoxide (CO), and biliverdin which is further converted to bilirubin. Both biliverdin and bilirubin arepotent antioxidants, reducing the risk of atherosclerosis...
Methadone is widely being used for opioid substitution therapy. However, the administration of methadone to opioid dependent individual is frequently accompanied by withdrawal syndrome and chemical dependency develops. Other than that, it is also difficult to retain patients in the treatment programme making their retention rates are decreasing over time. This article is written to higlights th...
Sulfate attack is a series of physico-chemical reactions between hardened cement paste and sulfate ions. Sulfate ion penetration into the hydrated cement results in the formation of voluminous and deleterious phases such as gypsum and ettringite which are believed to cause deterioration and expansion of concrete. Concrete deterioration due to sulfate attack depends on many parameters, however, ...
synonymy is one of the central topics in both modern and traditional linguistics. there have been different discussions around synonymy such as disagreement about its acceptance or denial, the rate of dynamicity, capability, and domain of application and the ways of applying it. the importance of synonymy arises when the relation between word and meaning forms as a consequence of users’ communi...
the b3lyp/6-31++g** density functional calculations were used to obtain minimum geometries and interaction energies between the molecular hydrogen and nanostructures of fullerenes, c20 (cage), c20 (bowl), c19si (bowl, penta), c19si (bowl, hexa). the h2 molecule is set as adsorbed in the distance of 3å at vertical position from surface above the pentagonal and hexagonal sites of nanostructures. ...
introduction: addiction is a habit or behavior that is often hard to quit. it is estimated that 190 million persons are substance users around the world. substance abuse creates tolerance after a while. shortly after taking the drug, a person will not enjoy as the beginning of its use that is why the amount of substance used is gradually increased. the purpose of this study was to find the reas...
the structure and properties of niobapyrimidinium complex were examined by density functionaltheory method (mpw1pw91). the effect of solvent on the structural parameters, frontier orbitalenergies and hyperpolarizability (tot) of this molecule has been explored. the thermodynamicproperties of the title compound at different temperatures have been calculated. also, the parasubstitutionseffect on...
Efficient Attacks On Homophonic Substitution Ciphers by Amrapali Dhavare Substitution ciphers are one of the earliest types of ciphers. Examples of classic substitution ciphers include the well-known simple substitution and the less well-known homophonic substitution. Although simple substitution ciphers are indeed simple both in terms of their use and attacks; the homophonic substitution ciphe...
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