initial commit / add all books

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+// Scilab Code Ex9.1.3:Page-411 (2008)
+clc; clear;
+u = 931.508;    // Energy equivalent of 1 amu, MeV
+Z = 8;    // Atomic number of O-16
+A = 16;    // Mass number of O-16
+m_p = 1.008142;     // Mass of a proton, u
+m_n = 1.008982;    // Mass of a neutron, u
+M_O = 15.994915;    // Atomic mass of O-16 nucleus, u
+delta_m = Z*m_p + (A-Z)*m_n - M_O;    // Mass difference, u
+BE = delta_m*u;    // Binding energy of O-16 nucleus, MeV
+BE_bar = BE/A;    // Binding energy per nucleon of O-16 nucleus, MeV
+delta_m = abs(M_O - A);    // Mass difference, u
+PF = delta_m/A;    // Packing fraction for O-16 nucleus, u
+printf("\nThe binding energy per nucleon for O-16 nucleus = %4.2f MeV/nucleon", BE_bar);
+printf("\nThe packing fraction for O-16 nucleus = %5.3e u", PF);
+
+// Result 
+// The binding energy per nucleon for O-16 nucleus = 8.27 MeV/nucleon
+// The packing fraction for O-16 nucleus = 3.178e-004 u 
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