Consider a set of receptors belonging to two competitive telecommunication firms, the blue firm and the red firm. The receptors are represented as points in the plane, b are blue and belong to the blue firm and r are red and belong to the red firm. The blue firm has an emitting device represented as a point that moves along a path sending information to blue receptors as follows: At any time, t...

In this study we have evaluated the use of blue light (peak at 415 nm) and a mixed blue and red light (peaks at 415 and 660 nm) in the treatment of acne vulgaris. One hundred and seven patients with mild to moderate acne vulgaris were randomized into four treatment groups: blue light, mixed blue and red light, cool white light and 5% benzoyl peroxide cream. Subjects in the phototherapy groups u...

A monolithic two-section quantum dot semiconductor laser is differentially pumped to form non-uniform current injection in the gain region. We show that the nature of the spectral content in the output signal is affected by this differential pumping; despite the fact that the separately pumped gain regions are not electrically isolated in this device. Both negative (red-shift) and positive (blu...

Gray molasses is a powerful tool for sub-Doppler laser cooling of atoms to low temperatures. For alkaline atoms, this technique is commonly implemented with cooling lasers which are blue-detuned from either the D1 or D2 line. Here we show that efficient gray molasses can be implemented on the D2 line of K with red-detuned lasers. We obtained temperatures of m ( ) 48 2 K, which enables direct lo...

Figures: Figure 1: Computational results for the Y-X potential energy profile at Z=67µm for the red-detuned example (bright spot) and the Y-X profile at Z=100µm for the blue-detuned example (dark spot). The corresponding Y-Z profiles of the trapping potential energies for both examples are also shown. These results were calculated for a 780nm laser incident on a 25µm diameter pinhole. Adapted f...

A geometric spanning tree of a point set S is a tree whose vertex set is S and whose edge set is a set of non-crossing straight line segments with endpoints in S. Given a set of red points and a set of blue points in the plane, the red/blue spanning tree problem is to find a geometric spanning tree for red points and a geometric spanning tree for blue points such that the number of crossing poi...

We developed a novel temperature measurement and control method that uses color analysis of fluorescence spectrum. Functional gel-tools encapsulating quantum dots (Q-dots) was used. These tools can be manipulated in a solution by optical tweezers. We used color analysis of the fluorescence for temperature measurement. YCrCb information (Y: brightness, Cr: red color difference, Cb: blue color di...

Case report: In this case study we report the treatment outcome of using photodynamic diagnosis (PDD) and chlorine e6 based PDT as part of adjuvant therapy in a patient with locally advanced nasal carcinoma. The patient had previously refused surgical ablation of the nose for cosmetic and psychological reasons. Chlorin E6 was given IV at a dose of 1 mg/sqm BSA three hours before PDT procedure. ...

The subcellular expression patterns and fluorescence intensities of cytoplasm-targeted, constitutively expressed blue-, cyano-, green-, yellow- and red-fluorescent protein were assessed in a number of transformants of the blast pathogen, Magnaporthe grisea. All transformants grew normally, remained pathogenic on barley, and, except for those expressing blue fluorescent protein, exhibited signif...

Guard cells of the orchid genus, Paphiopedilum have been reported to lack developed chloroplasts and detectable chlorophyll a autofluorescence. Paphiopedilum stomata lack a photosynthesis-dependent opening response but have a blue light-specific opening. The present study found that low fluence rate green and red light elicited stomatal opening in Paphiopedilum and this opening was reversed by ...