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Define Ion exchange chromatography?
In this method a reversible exchange of ions is effected. Usually resins and ionic solutes are the two components involved in ion-exchange. Ion exchange resins are of two types cation and anion exchange resins. The acidic or cation exchange resins contain sulfonic acid groups (SO3H), carboxylic groups (COOH) or phenol groups (OH).
Basic or anion exchange resins contain weakly basic amine groups (NH2) or strongly basic quarternary ammonium groups (NH4)+ OH-. The surfaces of acid resins bind cations such as H, Na+, Ca2+, NH4+. The basic or anion exchange resins carry positive charges on the surface and thus adsorb negative ions.
Define the Composition of Potato Dextrose Agar? This media is used for cultivation of yeasts, fungi and moulds. Potato (Peeled) - 200.0 gm Dextrose - 20.0 gm Agar - 15
How can the age of a tree be estimated from the analysis of the rings present on a cross section of its stem? For the growth of the tree it is essential to have formation of ne
Describe in brief about failing implant The failing implant may show evidence of pocketing, bleeding upon probing, purulence, and indicates the bone loss patterns are progressi
What are the antigens and the respective antibodies of the ABO blood group system? The ABO blood system contain the erythrocytic antigens A and B that can be attacked by the an
Clinical symptoms of HIV Generally, a person infected with HIV does not show any apparent symptoms for a number (3 to 12) of years. Ten to fifteen percent infected people may,
What is ancylostomiasis? Ancylostomiasis is a disease caused by Ancylostoma duodenale or Necator americanus, both hookworms belonging to the nematode phylum (roundworms). Ancyl
Tissue Valves : Tissue valves mounted on a frame with a sewing ring are inserted by the same technique as used in the case of prosthetic valves.
The cytoskeleton is a network of very little tubules and filaments spread throughout the cytoplasm of eukaryotic cells. It is made of microtubules, microfilaments and intermediate
State the Stabilization of haem pigments Ligands suggested for the stabilization of haem pigments are imidazole (and its derivatives), S-nitrosocysteine and nitrite. Whereas se
Define Precautions for Acid Fast Staining? 1. Do not allow carbol fuchsin to dry on heating. 2. Maintain aseptic conditions. 3. Decolourization should be done till no red
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