Expansion of a Bose-Einstein condensate (BEC) is studied in the presence of a random potential. The expansion is controlled by a single parameter, (microtau(eff)/variant Planck's over 2pi), where micro is the chemical potential, prior to the release of the BEC from the trap, and tau(eff) is a transport relaxation time which characterizes the strength of the disorder. Repulsive interactions (non...

We study nonlinear localization of a two-component Bose-Einstein condensate (BEC) in a one-dimensional optical lattice. Our theory shows that spin-dependent optical lattices can be used to effectively manipulate the nonlinear interactions between the BEC components, and to observe composite localized states of a BEC in both bands and gaps of the matter-wave spectrum.

BACKGROUND The analysis of exhaled breath condensate (EBC) is a non-invasive technique that enables the determination of several volatile and nonvolatile substances produced in the respiratory tract, whose measurement may be useful for the diagnosis and monitoring of several respiratory diseases. OBJECTIVE The aim of this study was to produce a low-cost reusable device in order to sample exha...

The reaction of nitric oxide (NO) and superoxide anions (O(2)(-)) in the airway results in the formation of peroxynitrite, a highly reactive oxidant species. Peroxynitrite reacts with tyrosine residues in proteins to form the stable product nitrotyrosine. We investigated whether nitrotyrosine in exhaled breath condensates may be increased in patients with asthma. Four groups of nonsmoking subje...

OBJECTIVE To utilize low-cost and simple methods to assess airway and lung inflammation biomarkers related to air pollution. METHODS A total of 87 male, non-smoking, healthy subjects working as street traffic-controllers or office-workers were examined to determine carbon monoxide in exhaled breath and to measure the pH in nasal lavage fluid and exhaled breath condensate. Air pollution exposu...

BACKGROUND Cigarette smoking reduces the level of exhaled nitric oxide (NO) in healthy subjects, although the mechanism is unclear. NO is a highly reactive molecule which can be oxidised or complexed with other biomolecules, depending on the microenvironment. The stable oxidation end products of NO metabolism are nitrite and nitrate. This study investigated the effect of smoking on NO metabolit...

1. Balint B, Donnelly LE, Hanazawa T, Kharitonov SA, Barnes PJ. Increased nitric oxide metabolites in exhaled breath condensate after smoking exposure. Eur. Resp. J. 2000;16. Suppl. 31.186S.1399. 2. Balint B, Donnelly LE, Hanazawa T Kharitonov SA, Barnes PJ. Increased nitrotyrosine in exhaled breath condensate in cystic fibrosis Eur. Resp. J. 2000;16. Suppl. 31.512S.3574. 3. Balint B, Donnelly ...

s related to the thesis Huszár É., Vass G., Horváth I., Herjavecz I. Expired adenosine in breath condensate of healthy subjects, allergicand asthmatic patients. Am J Respir Crit Care Med. 2001;163:A48. Vass G., Huszár É., Barát E., Molnár-Világos Gy., Valyon M., Horváth I., Kollai M. The effect of the use of nose clip on exhaled breath condensate. Am J Respir Crit Care Med. 2002;165:A15. Vass G...