background evaluation of the craniofacial bones is the oldest method to measure the facial proportion ratio in orthodontics. objectives the purpose of this study was to evaluate the effect of emboss enhancement on the reliability of landmark identification in digital lateral cephalometric images. materials and methods ten digital lateral cephalograms were selected from the archive of an oral an...

Medium modifications of the πωρ vertex are analyzed in context of the ω → πγ and ρ → πγ decays in nuclear matter. A relativistic hadronic model with mesons, nucleons, and ∆(1232) isobars is applied. A substantial increase of the widths for the decays ω → πγ and ρ → πγ is found for photon virtualities in the range 0.3 − 0.6GeV. This enhancement has a direct importance for the description of dile...

We introduce a new scheme for two-dimensional IR spectroscopy in the partially collinear pump-probe geometry. Translating birefringent wedges allow generating phase-locked pump pulses with exceptional phase stability, in a simple and compact setup. A He-Ne tracking scheme permits to scan continuously the acquisition time. For a proof-of-principle demonstration we use lithium niobate, which allo...

The low level acoustico-visual association reported by Yehia et al. (Speech Comm., 26(1):23-43, 1998) is exploited for audio-visual speech enhancement with natural video sequences. The aim of this study is to demonstrate that the redundant components of AV speech are extractible with a suitable representation which does not involve any categorization process. A comparative study is achieved bet...

A novel sesterterpenoid designated as nitiol (1), possessing enhancement activity of IL-2 gene expression in a human T cell line, was isolated from the Peruvian folk medicine "Hercampuri" (Gentianella nitida). The structure was elucidated by extensive spectroscopic investigation.

One of the most intriguing problems of heterogeneous crystal nucleation in droplets is its strong enhancement in the contact mode (when the foreign particle is presumably in some kind of contact with the droplet surface) compared to the immersion mode (particle immersed in the droplet). Heterogeneous centers can have different nucleation thresholds when they act in contact or immersion modes. T...

The Si III] 1892 Å intercombination line shows an anomalously high intensity in spectra of the radiation-rich Weigelt blobs in the vicinity of Eta Carinae. The line disappears during the 100 days long spectral events occurring every 5.5 years. The aim is to investigate whether resonance-enhanced two-photon ionization (RETPI) is a plausible excitation mechanism for the Si III] λ1892 line. The po...