In this paper, a novel core-modified porphyrin with meso-aryl substituents and phenanthrene-fused pyrrole rings (N2S2-OR) is synthesized. Scanning tunneling microscopy (STM) has been used to probe its self-assembly behavior on a highly-oriented pyrolytic graphite (HOPG) surface. Our STM results have shown that there is an obvious solvent-dependent self-assembly for the surface-confined target m...

Cuticular hydrocarbons (CHCs) play an essential role in mate recognition in insects but the form and intensity of sexual selection on CHCs has only been evaluated in a handful of studies, and never in a natural population. We quantified sexual selection operating on CHCs in a wild population of sagebrush crickets, a species in which nuptial feeding by females imposes an unambiguous phenotypic m...

The Relapsing Polychondritis (RP) is an uncommon systemic disease of unknown aetiology, probably due to an autoimmune process that destroys cartilaginous tissues because of a recurring inflammatory lesion. Deformities in the nasoseptal structure as the “nose in saddle” result in functional and aesthetic damage. The present study describes a case of a 53-yearold woman with the main diagnostic hy...

We establish sharp energy estimates for some solutions, such as global minimizers, monotone solutions and saddle-shaped solutions, of the fractional nonlinear equation (−∆)u = f(u) in R. Our energy estimates hold for every nonlinearity f and are sharp since they are optimal for one-dimensional solutions, that is, for solutions depending only on one Euclidian variable. As a consequence, in dimen...

The crystal structure of the well-studied 9,10-bis-(1,3-di-thiol-2-yl-idene)-9,10-di-hydro-anthracene mol-ecule, C20H12S4, (I), also known as exTTF, is reported. The mol-ecular structure of (I) consists of a di-hydro-anthracene moiety with two 1,3-di-thiol-2-yl-idene substituents. This is a saddle-shaped mol-ecule, which inter-acts with a close neighbor through various π-π and C-H⋯π contacts to...

A spectroscopic imaging technique with high spatial resolution was used for the measurement of the static magnetic field homogeneity of RF coils. Measured magnetic fields of optimised and not optimised saddle-shaped coils were compared with the theoretical calculations. Results are in good qualitative agreement between calculated and measured magnetic field distributions. Quantitative disagreem...

Diindeno-fused bischrysene, a new diindeno-based polycyclic hydrocarbon (PH), was synthesized and characterized. It was elucidated in detailed experimental and theoretical studies that this cyclopenta-fused PH possesses an open-shell singlet biradical structure in the ground state and exhibits high stability under ambient conditions (t1/2 =39 days). The crystal structure unambiguously shows a n...

In the title compound, C(26)H(24), the central cyclo-octa-tetra-ene ring has a boat conformation, and the mol-ecule is saddle shaped. The seat is defined by the mean plane of the four-atom attachment points (r.m.s. deviation = 0.014 Å) of the two bicyclo-heptane substituents. These substituents comprise the pommel and cantle, with each mean plane defined by four atoms proximate to the seat (r.m...

Depending on the initial energies, a proton transfer may proceed either via a saddle-point in a potential energy surface or by crossing from the reactants' to the products' valley before the saddle-point is reached. In the second path the analogy to weak-overlap electron transfers is pointed out. The present study is intended to unify previously divergent viewpoints, by showing how they are spe...

In this p;y)cr , ;I new crack detection rnethod in ro;ul surface inlagc based on morphological t,echniqrlr is proposed. Cracks arc difficult, t,o dct.ect directly at t.hc pixel level because of t , l ~ noise and the vagueness. Some kind of st,r~lct.ural information is needed. A crack is t,hought, tlo be ;I siiccession of dark saddle points with t,he linear feature. In the proposed met.hod , t,h...