We review the solution and properties of the diffusion equation in a hierarchical or ultrametric space [ 11. One of the oldest equations in physics is the equation of diffusion. In its most general form it reads: dPi N E..p. dt = j=l rJ ’ c where Pi is the probability of finding a particle at site i (i = 1, . . . . N) of some arbitrary discretized space M, and cij is the hopping or transition p...

DIMBOA (2,4-dihydroxy-7-methoxy-1,4-benzoxazin-3-one) is the main hydroxamic acid isolated from maize extracts. It inhibited reversibly ATP synthesis, Pi-ATP exchange reaction and ATPase activity in submitochondrial particles from bovine heart. Half-maximal effects were obtained with 4, 2, and 6 mM DIMBOA respectively. At higher concentrations it also inhibited mitochondrial electron transport ...

This report presents progress for both competitively-funded segments of NEI grant R01-EY10019, Electrotactile display of computer graphics for blind. The initial project period was 12/1/92–11/30/96, with a no-cost extension until 5/31/97 (Paul Bach-y-Rita, PI). The second funding period was 9/30/98–9/29/02, with a no-cost extension until 9/30/04 (Kurt Kaczmarek, PI). Progress in the two competi...

Previously obtained picolinic acid benzylamide is a potent anticonvulsant with low neurotoxicity. In search for new effective anticonvulsants twelve new benzylamides (1-12) were synthesized and preliminary evaluated in the Anticonvulsant Screening Program (ASP) of Antiepileptic Drug Development Program (ADDP) of NIH. Two of them appeared the most promising: 1-cyclopentenecarboxylic acid benzyla...

For real numbers CL> 0 and /I, let S(or, fl) denote the set of integers {[WI + /I] : n = I, 2, 3,...} where, as usual, [x] denotes the greatest integer <.x. A finite family {S(q) pi) : 1 < i < r> of these sets is said to be an eventual covering fami& (ECF) if every sufficiently large integer occurs in exactly one S(CX~, pi). It is well known (e.g., see [I 11, [l], [6], [7]) that if all /3, are ...

Crystals of C.I. Disperse Blue 354, a commercial methine disperse dye, were grown from an ethyl acetate and the crystal structure was determined. Results show that two aromatic planes are effectively coplanar with the dihedral angle of 10.61(11) degrees. The dicyanomethylene group is slightly twisted and two n-hexyl groups tend to be separated with one alkyl group being at the level of the arom...

No panorama mundial, a disseminação da cultura Propriedade Intelectual (PI) para crianças e adolescentes é considerada uma importante estratégia o desenvolvimento. Nesse sentido, este artigo teve como intuito identificar produção acadêmica material didático de PI orientados no Brasil exterior. Esta pesquisa foi realizada com levantamento materiais didáticos em duas etapas: primeira fontes primá...