We show that a fundamental feature of the three-level:two-level model, used to describe molecular monomode lasers with a saturable absorber, is the existence of isolas of periodic passive Q-switching (PQS) self-pulsations. A common feature of these closed families of periodic solutions is that they contain regions of stability of the PQS self-pulsation bordered by period-doubling and fold bifur...

This study aims to provide a review for odor detection, recognition and source localization and ongoing approaches taken to address the problem. To this aim sensor structures and chemical detection process are introduced. Next, recognition techniques of odor from detected chemicals are explained. To introduce source localization problem, the odor dynamics is introduced and models of odor diffus...

An image quality investigation in visible spectral imaging was performed. Spectral images were simulated using different number of imaging channels, wavelength steps, and noise levels based on practical spectral imaging systems. A mean opinion score (MOS) was determined from a subjective visual assessment scale experiment for image quality of spectral images rendered to a three-channel display....

Quorum sensing (QS) is a bacterial cell density-based communication system using low molecular weight signals called autoinducers (AIs). Identification and quantification of these molecules could provide valuable information related to the stage colonization or infection as well disease. With this scenario, we report here for first time development antibodies against PQS (pseudomonas quinolone ...

Introduction . Researchers in the field of oncology have a significant interest role microorganisms development malignant neoplasms. Aim To study levels 2-heptyl-3-hydroxy-4-quinolone (PQS) and 2-heptyl-4-quinolone (HHQ) produced by Pseudomonas aeruginosa blood patients with lung cancer to analyze relation between their changes level immunoglobulins vascular endothelial growth factor (VEGF) can...

A Process Query System (PQS) has the capability of filtering large volumes of real time data originating from a field of networked Physical Sensors. Modern air quality monitoring techniques such as Fourier Transform InfraRed (FTIR) spectroscopy will eventually provide massively distributed real time contamination data at high fidelity. As large networks of these sensors are deployed, improved t...

Pseudomonas aeruginosa is a Gram-negative opportunistic pathogen often associated with chronic infections in the lungs of individuals with the heritable disease cystic fibrosis (CF). Previous work from our laboratory demonstrated that aromatic amino acids within CF lung secretions (sputum) not only serve as carbon and energy sources but also enhance synthesis of the cell signaling molecule Pseu...

Abstract Because of their usually high molecular weight, polymers are generally considered as being low environmental concern and are, therefore, exempted from registration evaluation within REACH. This exemption is currently reviewed by the European Commission. Against this background, data on fate effects selected water-soluble synthetic organic used in cosmetic products were evaluated. The i...