In the title compound, C(22)H(26)N(4)O(2), the phenyl ring and hy-droxy-benzene group are twisted with respect to the central pyrazolone ring, making dihedral angles of 54.05 (5) and 21.80 (6)°, respectively. One of the ethyl groups is disordered over two positions with site occupancies of 0.872 (6) and 0.128 (6). The mol-ecular structure features short intra-molecular O-H⋯N and C-H⋯O contacts....

We consider di erent situations of blowup in sup norm for hyper bolic equations For scalar conservation laws with a source the asymptotic pro le of the solution close to a blowup point is described in detail Based on an example of Je rey we next show how blowup for ordinary di erential equations can be used to construct examples of blowup for systems of hy perbolic equations Finally we outline ...

../ The centenary of the discovery of the leprosy hacillus is an appropriate occasion on which to revive the Illelllory of a criminal prosecution which is quite exceptional , at any rate in Norwcgian legal annals. The special interest of the case lies pmtly in its close concern with the personal and professional integrity of an eminent physician and scientist, and partly in its probing of the q...

The present paper contrasted categorical and featural hypotheses of semantic memory organisation in relation to the living/nonliving things dissociation phenomenon. In the three experiments reported, normal subjects decided if word pairs representing living, nonliving, or both (mixed pairs) shared a particular perceptual (i.e., four legs, size, and hardness) or functional attribute (i.e., dange...

Recent developments in cosmology indicate that every history having a nonzero probability is realized in infinitely many distinct regions of spacetime. Thus, it appears that the universe contains infinitely many civilizations exactly like our own, as well as infinitely many civilizations that differ from our own in any way permitted by physical laws. We explore the implications of this conclusi...

A twist is evident in the title compound, C(21)H(21)N(3)O(2), the dihedral angle between the terminal six-membered rings being 29.46 (10)°; the linked five- and six-membered rings are coplanar [1.30 (11)°]. The carbonyl O atom accepts intra-molecular hydrogen bonds from the adjacent hy-droxy and amine groups. The three-dimensional crystal packing is achieved through C-H⋯π inter-actions.

In the title compound, C(16)H(14)ClN(3)O(3)S, the thia-zine ring adopts a sofa (half-chair) conformation, with an r.m.s. deviation from the mean plane of 0.23 Å. The S atom and S-bonded C atom exhibit the maximum deviations from the thia-zine mean plane [-0.3976 (12) and 0.3179 (14) Å, respectively]. The conformations around the double bonds in the R(2)C=N-N=CHR unit are Z and E. An intra-molec...

The binuclear centrosymmetric title compound, [Sn(2)(C(3)H(7)O)(6)Cl(2)(C(3)H(8)O)(2)], exhibits an edge-shared double octahedral exhibits an edge-shared octa-hedral structure, which is distorted owing to the presence of asymmetric intra-molecular hydrogen bonds between the axially coordinated isopropanol and isopropoxide ligands. The H atom of the hy-droxy group is located nearer to an isoprop...

In the title compound, C(9)H(8)Br(2)O, the cyclo-pentene ring adopts an envelope conformation with the brominated C atom as the flap. In the crystal, mol-ecules are linked by strong O-H⋯O hydrogen bonds into zigzag C(4) chains along [010]. In addition, a C-H⋯π inter-action involving the benzene ring and the H atom attached to the hy-droxy-lated C atom is observed.