Elementare Arithmetik und Algebra, by Hermann Schubert potx

Ngày tải lên: 06/03/2014, 16:20

Ngày tải lên: 15/03/2014, 15:20

Ngày tải lên: 15/03/2014, 15:20

... be a perfect square, by part (i).  Proposition 1.22. A positive integer a is divisible by 3(or by 9) if and only if the sum of its (decimal) digits is divisible by 3(or by 9). Sketch of Proof. ... for cos(3x) follows by replacing sin 2 x by 1 − cos 2 x. Equality of the imaginary parts gives sin(3x) = 3 cos 2 x sin x−sin 3 x = 3sinx−4sin 3 x; the second formula arisesby replacin...

Ngày tải lên: 25/01/2014, 19:20

... x          (4) was derived by Euler (for one point) and by Lagrange (for a system of points). Along with many-sided and rigorous description of physical regularities the book by Lagrange (Lagrange, ... Poggendorffs Annalen der Physik und Chemie, later Annalen der Physik), the paper passed unnoticed by contemporary scholars. It will be rediscovered only in 1884 b...

Ngày tải lên: 21/02/2014, 23:20

... catch the drift of sentiment round him, or to put himself in touch with the opinions of others. His chair in any room is soon surrounded by vacant seats or by patient sufferers. The vice has, ... have tried to indicate the method by which it can be attained by any young man who is sufficiently resolute in his purpose. Finance, Commerce, and Industry are, under modern conditions,...

Ngày tải lên: 05/03/2014, 16:20

... conformational features of the heavy chains under physiological conditions, which are undetectable by X-ray crystallog- raphy and exist irrespective of the sequence of the bound peptide and its binding mode. ... represented by red spheres. Hydrogen bonds and salt bridges are depicted by dashed red lines. (A) pVIPR-U5 drawn in purple as presented by B*2705. (B) pVIPR-U5 drawn in yellow...

Ngày tải lên: 06/03/2014, 00:21

... drainage canal may be on top, or on the under surface next to the light-carrier canal. For ordinary work, however, secretion in the bronchus is best removed by sponge-pumping (Q.V.) which at the same ... is necessary never to use by Johnston and Johnston, of New Brunswick, N. J. and are sold in the shops. Mouth-gag.—Wide gagging prevents proper exposure of the larynx by forcing the mand...

Ngày tải lên: 06/03/2014, 15:20

... were then analysed by SDS-PAGE under reducing conditions, followed by western blotting, using anti-fluores- cein Fab¢ fragments conjugated to peroxidase. Samples were also analysed by western blotting ... reaction was then quenched by the addition of SDS (final concentra- tion, 2%). P-Nitrophenol, generated by the NAT1-medi- ated hydrolysis of PNPA in the presence of PAS, was quantifie...

Ngày tải lên: 07/03/2014, 02:20