The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
In this paper, we explore calibrations for DT770 Pro, Sennheiser's HD250 headphone and Etymotic Research ER-2 insert earphone with KEMAR. The results have proved that at least for these three earphones, the change of earphone's location will cause the sound pressure level in the subject's tympanic membrane to change. However, only in the relative lowfrequency and high frequency regions, the changes...
The extracts of S. chamaejasme were reported to have strongly acaricidal activity against T. cinnabarinus, but the mode of its action against mites is unclear. In this study, the effects on T. cinnabarinus caused at subcellular level by S. chamaejasme extracts were evaluated by transmission electron microscopy. Exposure to S. chamaejasme extracts, bilayer membrane detached and nuclear condensed. The...
Our previous studies showed that methyl palmitate had the acaricidal activity to T. viennensis. However, the mechanism of action of methyl palmitate on T.viennensis is unknown. Here, the toxicosis symptoms of T.viennensis exposed to methyl palmitate were studied to preliminarily uncover the acaricidal mechanism of methyl palmitate. Methyl palmitate caused dose-dependent mortality of T.viennensis...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.