Looking for a pattern: An MEG study on the abstract mismatch negativity in musicians and nonmusicians

Background  

The mismatch negativity (MMN) is an early component of event-related potentials/fields, which can be observed in response to violations of regularities in sound sequences. The MMN can be elicited by simple feature (e.g. pitch) deviations in standard oddball paradigms as well as by violations of more complex sequential patterns. By means of magnetoencephalography (MEG) we investigated if a pattern MMN could be elicited based on global rather than local probabilities and if the underlying ability to integrate long sequences of tones is enhanced in musicians compared to nonmusicians.     

Nano-Templates from Thermoresponsive Poly(ethoxytriethyleneglycol acrylate) for Polymeric Nano-Capsules

Temperature responsive poly(ethoxytriethyleneglycol acrylate) (PETEGA) of Mn = 8000 and M_w/M_n = 2.30 was synthesized by ATRP. Dilute aqueous solutions of PETEGA exhibit lower critical solution temperature (LCST) at around 34 °C. We found that PETEGA can form nano-sized uniform colloidal aggregates (50-200 nm) above LCST either with or without an additional surfactant. Therefore PETEGA nano-aggregates were used as templates for the seeded free radical copolymerization of acrylamides or methacrylates together with a cross-linker to form acrylamide or methacrylate based core-shell particles. The formation of the PETEGA templates was investigated by dynamic light scattering (DLS) in order to find optimal conditions for obtaining narrow dispersed aggregates of desired sub-micron dimensions. Core-shell particles were characterized by DLS and scanning electron microscopy.     

Zur azidimetrischen Bestimmung der Orthophosphors?ure

Ohne Zusammenfassung     

Eine Reaktion des Mangans, Eisens und Kobalts

Ohne Zusammenfassung     

Die Adsorption von Elektrolyten auf heteropolaren Kristalloberflächen

Zusammenfassung In dieser Arbeit wurde der innere Einschlu? einiger Salze im BaSO₄ als Beweis der Adsorbierbarkeit dieser Salze auf der BaSO₄-Oberfl?che verfolgt. Der Widerspruch zwischen den dabei erhaltenen Ergebnissen und der Reihe von B. Težak erkl?rt sich daraus, da? die Adsorptionsschichten Elektrolyt—heteropolare Kristalloberfl?che einen zusammengesetzteren Bau und nicht eine so einfache Zusammensetzung aufweisen, als Težak im Einklang mit anderen Autoren bis jetzt annimmt.     

Woher die Fehler beim Fallen des Bariumsulfats kommen

Ohne Zusammenfassung     

Complexation of poly(ethylene oxide) and urea

The complexation of ultrahigh-molecular-weight poly(ethylene oxide) (PEO) with urea in both the solid and molten states was studied by infrared spectroscopy. Information about the temperature dependences of the absorption bands in the 3600–2600 and 1300–600 cm^?1 region on heating and cooling was obtained. Some conclusions concerning the interaction between PEO and urea were also made. The formation of a high temperature, metastable molecular complex between PEO and urea, which is susceptible to undercooling, was confirmed spectroscopically. Heating to 85–90°C resulted in a molecular complex stable at room temperature.© 1994 John Wiley & Sons, Inc.