The Influence of Montmorillonite Nanofillers on the Lung Surfactant

The influence of montmorillonite nanoparticles used as nanofillers in the production process of polymer nanocomposites on the physicochemical properties of the main lipid component of the lung surfactant was studied. Research was done for nanoparticles of natural and surface-modified montmorillonite using the Langmuir-Wilhelmy balance. It was found that montmorillonite nanofillers alter the organization of the surfactant molecules at the air-liquid interface and modify the surface properties of the surfactant monolayer. It may cause the disturbance of surface activity of the lung surfactant and contribute to adverse health effects in the respiratory system of workers involved in the production process. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/3542

Electroweak measurements in electron–positron collisions at w-boson-pair energies at lep

Contains fulltext : 121524.pdf (preprint version ) (Open Access

Search for neutral MSSM Higgs bosons at LEP.

The four LEP collaborations, ALEPH, DELPHI, L3 and OPAL, have searched for the neutral Higgs bosons which are predicted by the Minimal Supersymmetric standard model (MSSM). The data of the four collaborations are statistically combined and examined for their consistency with the background hypothesis and with a possible Higgs boson signal. The combined LEP data show no significant excess of events which would indicate the production of Higgs bosons. The search results are used to set upper bounds on the cross-sections of various Higgs-like event topologies. The results are interpreted within the MSSM in a number of “benchmark” models, including CP-conserving and CP-violating scenarios. These interpretations lead in all cases to large exclusions in the MSSM parameter space. Absolute limits are set on the parameter cosβ and, in some scenarios, on the masses of neutral Higgs bosons