The aromatic features in M101 were studied spectroscopically and photometrically using observations from all three instruments on the Spitzer Space Telescope. The global SED of M101 shows strong aromatic feature (commonly called PAH feature) emission. ... This implies that the weakening of the aromatic emission in massive star-forming regions is due primarily to processing of the dust grains in these environments, not to differences in how they form. ...

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• GOODS/HST Transient Search Results
• FOC Linearity

... Effect of vortex fluctuations on 205 Tl spin-lattice relaxation in the mixed state of Tl 2 Ba 2 CuO 6 . ... The spin-lattice relaxation rate W on 205 Tl has been measured in the mixed state of a Tl 2 Ba 2 CuO 6 aligned powder sample with T c =100 K. At T < 25 K, W T and decreases with increasing magnetic field. This behavior is explained as caused by fluctuations of pancake vortices; the latter induce a time dependent random magnetic field which causes the relaxation of nuclear spins. ...

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... Electrons . ... 4a. Electric Fluid . ... First electric currents were brought up, in connection with Oersted's work. ... An electric current is essentially the continuous flow of electric charge. ... By long tradition, the direction of the electric current is defined as the direction in which positive charges move. ... Currents that flow may depend on such voltages, but don't look to Ohm's law for guidance, because the flow of current is primarily dictated by magnetic fields, which makes a...

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... Electrons . ... 4a. Electric Fluid . ... First electric currents were brought up, in connection with Oersted's work. ... An electric current is essentially the continuous flow of electric charge. ... By long tradition, the direction of the electric current is defined as the direction in which positive charges move. ... Currents that flow may depend on such voltages, but don't look to Ohm's law for guidance, because the flow of current is primarily dictated by magnetic fields, which makes a...

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• Space Weather Dials Interpretation Guide
• Plasma [Oulu]
• Discontinuities and shocks [Oulu]

The First Law (1): Energy is Conserved in a closed system: . ... We usually consider work and heat flow as the two kinds of energy . The Second Law (2): The Law of Entropy: . ... The amount of disorder increases . ... You can not go from a disordered system to an ordered system without inputting more energy (this is the most important attribute of the second law) . ... In no way can we recover work of that this disordered system without putting energy into the system. ... More on Thermodynamics . ...

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The azimuth, zenith dependence of various radars was measured on 27mar03 during the day. radar . ... 1350 . ... 200 Khz . ... 1290 . ... Data was taken with the correlator sampling at 1 second. ... The 1350 and 1290 radars are at peaks when they point at us. ... The 2nd and 3rd set of plots are made at the resolution of the sampled data (25 Khz) and a second set averaging the radar pulse over its transmitted bandwidth. ... The 1290 Mhz remy radar does not show very much peaked azimuth dependence. ...

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• rfi_az_dependence
• rotaPlatToSky
• azencRackGearRunout

Figure 3a. This shows the small variation of astigmatism as a function of telescope altitude which was measured on August 14. ... The astigmatism is seen to increase as the telescope nears the horizon. Figure 3b. This figure shows the telescope astigmatism measured on August 14 as a function of telescope altitude. ... Figure 3c. This figure shows the orientation of the telescope astigmatism as a function of telescope altitude for the night of August 14. ...

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• HTML guider report
• Secondary measurements
• Analysis of the August, 2000 Shack-Hartmann Data

... Kashyap, V., Drake, J., Smith, R., & Wargelin, B., 2014, 15 Years of Science with Chandra Symposium, Spectrum Ultimum Capellae: XV Years of Chandra Observations of Capella . ... Kashyap, V.L., Connors, A., Drake, J., Lee, T., Posson-Brown, J., Saar, S., Scargle, J., van Dyk, D., & Wong, R., 2014, AAS/HEAD 14, 119.05 TANAGRA: Timing Analysis of Grating Data . ... Audard, M., G del, M., Drake, J.J., & Kashyap, V.L., 2000, ApJ, 541, 396 . Audard, M., G del, M., & Guinan, E.F., 1999, ApJ, 513, L53 . ...

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• Eclipse Lightcurves for the Hydrostatic Model
• The AstroStat Slog Blog Archive Use and Misuse of Chi-square
• Statistics 310 2006-2007

This lesson is intended as a revision of basic direct-current (DC) circuits . It was discovered in the 19th century that certain materials (so-called ideal resistors) have a current through them I that is proportional to the potential difference (voltage) across them V. This is not a fundamental law of physics (like momentum conservation) but is an observed behavior which some materials roughly follow (like the friction law we covered earlier in the course). ... This equation is called Ohm's law. ...

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... The dependence of velocity ellipsoid parameters for various types stars upon theirage was investigated. ... For metal-rich stars ([Fe/H] -0.1) the shape of velocity ellipsoid becomes more spherical with increasing age of the stellar group and it approaches the equilibrium shape. ... По данным uvby -фотометрии, изохронным возрастам и собственным движениям ~3500 F -звезд диска в окрестности 80 пс от Солнца исследованы зависимости параметров эллипсоидов скоростей различных звезд от возраста. ...

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• Vladimir Marsakov Publication List

... comedi_set_global_oor_behavior -- out-of-range behavior . ... int comedi_set_global_oor_behavior (enum comedi_oor_behavior behavior); . ... This currently affects the behavior of comedi_to_phys() when converting endpoint sample values, that is, sample values equal to 0 or maxdata. If the out-of-range behavior is set to COMEDI_OOR_NAN, endpoint values are converted to NAN. If the out-of-range behavior is set to COMEDI_OOR_NUMBER, the endpoint values are converted similarly to other values. ...

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• Optimization of spectroscopic observations

We have obtained simultaneous high resolution H alpha and Na I D spectra of five dwarf M stars that span a wide range in chromospheric activity level. ... However, the H alpha line systematically indicates a value for the mass loading at the onset of the Transition Region and the location of T_min that is 0.4 dex lower in column mass density than that indicated by NaI D. Therefore, the profile of both lines cannot be simultaneously well fit for all but one of our stars. ...