... e r is the unit vector pointing the direction of increasing r, holding θ and φ fixed; e θ is the unit vector pointing the direction of increasing θ, holding r and φ fixed; and e φ is the unit ... vector pointing the direction of increasing φ, holding r and θ fixed. These unit vectors are shown in the figure at right. Notice that the surface φ=const is a plane containing the point r itsel...
Ngày tải lên: 17/03/2014, 13:48
Mathematical methods in quantum mechanics g teschl
... et is again open (closed). Note: In a topological space, (iii) is used as definition for continuity. However, in general (ii) and (iii) will no longer be equivalent unless one uses generalized ... unions. In general, a space X together with a family of sets O, the open sets, satisfying (i) –(iii) is called a topological space. The notions of interior point, limit point, and neighborhood...
Ngày tải lên: 17/03/2014, 14:41
Báo cáo khoa học: Making sense of G-quadruplex and i-motif functions in oncogene promoters pot
... overlapping G- quadruplexes (5 G4 , MidG4, 3 G4 ) Bcl-2 Class IV 3′ 5′ 5′ -CGGGCGCGGGAGGAAGGGGGCGGGAGC-3′ 5′ -CGCGGGAGGAAGGGGGCGGGAGCGGGGCTG-3′ Pu39WT 5 G4 MidG4 3 G4 5′ -AGGGGCGGGCGCGGGAGGAAGGGGGCGGGAGCGGGGCTG-3′ ... -AGGGGCGGGCGCGGGAGGAAGGGGGCGGGAGCGGGGCTG-3′ 5′ -AGGGGCGGGCGCGGGAGGAAGGGGGC-3′ Pair of tandem G- quadruplexes having intermolecular interactions hTERT Class III 3′ 5′ 5′...
Ngày tải lên: 23/03/2014, 03:20