منابع مشابه
C2nr32216a 7301..7308
This review focuses on electron transfer at the interfaces between metal oxides and dye molecules within the context of the chemical nature of the anchoring functional groups, the structure of the dye molecules and the morphology of the metal oxides. In dye-sensitized metal oxides, the efficiency of interfacial charge separation and hence photon-to-current conversion may be sensitively manipula...
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Dear Editor-in-Chief, Influenza, commonly known as the flu, is an infectious disease caused by an influenza virus (1). Symptoms can be mild to severe (2). The most common symptoms include: high fever, runny nose, sore throat, muscle pains, headache, coughing, sneezing, and feeling tired (1). Three of the four types of influenza viruses affect people, Type A, Type B, and Type C (3, 4). Type D ha...
متن کاملCepheid distances from Interferometry
Long baseline interferometry is now able to resolve the pulsational change of the angular diameter of a significant number of Cepheids in the solar neighborhood. This allows the application of a new version of the Baade-Wesselink (BW) method to measure their distance, for which we do not need to estimate the star’s temperature. Using angular diameter measurements from the VLT Interferometer, we...
متن کاملRebuilding the Cepheid Distance Scale I: A Global Analysis of Cepheid Mean Magnitudes
Received ; accepted – 2 – ABSTRACT We develop a statistical method for using multicolor photometry to determine distances using Cepheid variables including the effects of temperature, extinction, and metallicity and apply it to UBVRIJHK photometry of 694 Cepheids in 17 galaxies. We derive homogeneous distance, extinction and uncertainty estimates for four models, starting from the standard extr...
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Observations of the light variations of AC Andromedae and TU Cassiopeiae are reviewed. The radial fundamental, first overtone, second overtone, and three nonlinear coupling beat pulsation periods of AC And are presented, confirming the Fitch and Szeidl work. For TU Cas the radial fundamental, first overtone, and several nonlinear coupling beat periods can be found, and a Fourier analysis has co...
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ژورنال
عنوان ژورنال: International Astronomical Union Colloquium
سال: 1980
ISSN: 0252-9211
DOI: 10.1017/s0252921100081859