34 research outputs found
Особенности систем автоматического управления процессом розжига водогрейных котлов типа ПТВМ-50
High-Performance Dual Raman Spectrometer
12 pages, 16 figures.The transformation of an old Raman double monochromator into
a dual spectrometer capable of working either as the origin al instrument
or as a very high sensitivity scanning single monochromator
with multichannel charge-coupled device (CCD) array detection
is described. The merits and limitations of this instrument, particularly
suited for medium/low resolu tion (0.3 to 2 cm2 1) Raman
spectroscopy in the gas phase, are discussed. Example spectra of
O2, N2, CO2, H2O, and CCl4 are shown.The Dirección General de Investigación
Científica y Técnica (DGICYT), of Spain, is acknowledged for financial
support (Research Project PB91-0133).Peer reviewe
Dynamic charge acceptance of lead-acid batteries for micro-hybrid automotive applications
Interpretation of processes at positive and negative electrode by measurement and simulation of impedance spectra : part ii: concentration limitation
Influence of measurement procedure on quality of impedance spectra on lead–acid batteries
Method for Optical Analysis of Surface Structures of Lead-Acid Battery Electrodes Using a Confocal Laser Scanning Microscope
A method for analyzing electrode surfaces of lead-acid batteries has been developed. It provides a clear view on crystal structures. The technique employs confocal laser scanning microscopy (CLSM). The developed method allows examination of large areas (1 mm2 or larger) and can be applied to entire battery plates. Specimen preparation is less laborious and costly compared to scanning electron microscopy (SEM) and still gives useful results. In addition, it turned out that electrode structures vary significantly on a scale of tenth of μm. This lowers the significance of a focused image e.g. from SEM. Suitable and reproducible conditions (washing duration, drying duration and drying temperature) for the examination and preparation of electrode surfaces are investigated. The proposed method has been applied to electrodes taken from automotive flooded lead-acid batteries; scans over areas have been acquired. Electrode structures after different operating conditions are presented