The energy required to remove an electron from the valence shell of the atom of an element is called the ionization energy of the element. The energies for the removal of the successive electrons are called the successive ionization energies like the first, sec...
iodine c. calcium d. barium e. kryptonWhat do atoms, in a gaseous state, have?Use your knowledge of the correct number of covalent bonds to predict the formula for a simple compound formed between carbon and (a) hydrogen, (b) bromine, (c) sulfur, and (d) helium.Give the symbol for...
Novel &agr;-amylase enzymes are disclosed in which a new calcium binding site is modified by chemically or genetically altering residues associated with that calcium binding site. The novel &agr;- amylases have altered performance charac... RR Bott,A Shaw - US 被引量: 218发表: 1997年 Heat...
The best known second messengers besides calcium are cyclic adenosine- and guanosine monophosphates, cAMP and cGMP, respectively. Prokaryotes and eukaryotes use cAMP, whereas cGMP is used primarily by eukaryotes. Recently, the guanine nucleotide, cyclic dinucleotide GMP (c-di-GMP3 ; 3′,5′-...
This technique uses cells expressing the orphan receptor to monitor intracellular changes of second messengers, such as cAMP production, calcium concentration, and arachidonic acid release (11., 12., 13., 14., 15., 16., 17.). Using this technique, we succeeded in the purification of an ...
Electronegativity: The electronegativity of an atom of an element is a measure of the force with which the atom pulls on the shared electrons in a covalent bond. The index is important to investigate the type of bond that exists between atoms of two elements: For ...
The gums formed in the resulting oil were eliminated via a degumming process in which they were hydrated by small amounts of water and then separated by centrifugation. The resulting DSO had phosphorus (P), and magnesium (Mg) plus calcium (Ca) concentrations of 9.08 and 14.16 ppm, ...
PMA is also used to improve the mechanical properties of calcium phosphate cement. To optimize the properties of bone cement for medical application, Thaitalay et al. studied the cement solution at different v/v% ratio of Na2HPO4 and PAA [128]. The best ratio was found to be 30:70 v/v...