We present a model for the photoevaporation of circumstellar disks or dense clumps of gas by an external source of ultraviolet radiation. Our model includes the thermal and dynamic e†ects of 6È13.6 eV far-ultraviolet (FUV) photons and Lyman continuum EUV photons incident upon disks or clumps idealized as spheres of radius and enclosed mass For sufficiently large values of the radiation r d M * ...

We present results from a deep (1σ = 5.7 mJy beam per 20.8 km s velocity channel) CO(1-0) interferometric observation of the central 60 region of the nearby edge-on starburst galaxy NGC 2146 observed with the Nobeyama Millimeter Array (NMA). Two diffuse expanding molecular superbubbles and one molecular outflow are successfully detected. One molecular superbubble, with a size of ∼ 1 kpc and an ...

An experimental investigation into material transfer and wear has been performed for the case of a ferrite probe sliding at high speeds (between 25 cm/set and 1250 cm/set) and low loads (10 gm) on a steel disk, a nickel plated disk, and a polymercoated disk, the latter containing finely dispersed abrasive particles. Autoradiographic methods together with microdensitometer analysis have been app...

Researchers have found a big interest in biological application of Fourier Transform Infrared (FTIR) spectroscopy. Evaluating many diseases, staging them and studying the chemical structures of different formed compounds in diseases are some of the research applications of FTIR. Cancer is also one of these diseases. Researchers are trying to set up FTIR methods to detect and diagnose cancer cel...

Introduction: One of the treatment choices in breast cancer is Intra operative electron beam radiation therapy (IOERT). Due to high dose delivery in this procedure, shielding disk is used to protect organs at risk (OARs). In this study, we evaluate the OARs dose in the breast IOERT using Monte Carlo simulation with and without shielding disk in RANDO phantom. Material and Methods: Simulation ...

to compare the effects of different weed management methods on seed bank of weeds grown in sugar beet (beta vulgaris l.), a field experiment was conducted at the agricultural research station, ferdowsi university of mashhad, iran, during 2006, 2007 and 2008. the experiment designed as a complete randomized block with three replications. the treatments including: disk+ fhenmedifham, disk+ fhenme...

this study carried out to evaluate the effect of different tillage systems on rapeseed yield (hayola 401) planted in corn residues. this experiment was done in moghan region with clay soils during 2009-2012. different seedbed preparation methods include mt: moldboard + disk tillage (conventional tillage was included), sct: stem crusher + chisel + disk tandem harrow, stt: stem crusher + double-d...

researchers have found a big interest in biological application of fourier transform infrared (ftir) spectroscopy. evaluating many diseases, staging them and studying the chemical structures of different formed compounds in diseases are some of the research applications of ftir. cancer is also one of these diseases. researchers are trying to set up ftir methods to detect and diagnose cancer cel...

The barred galaxy NGC 7479 hosts a remarkable jet-like radio continuum feature: bright, 12-kpc long in projection, and hosting an aligned magnetic field. The degree of polarization is 6%–8% along the jet, and remarkably constant, which is consistent with helical field models. The radio brightness of the jet suggests strong interaction with the ISM and hence a location near the disk plane. We ob...

Based on the microlensing variability of the two-image gravitational lens HE 1104–1805 observed between 0.4 and 8 μm, we have measured the size and wavelength-dependent structure of the quasar accretion disk. Modeled as a power law in temperature, T ∝ R, we measure a B-band (0.13 μm in the rest frame) half-light radius of R1/2,B = 6.7 +6.2 −3.2 × 10 15 cm (68% CL) and a logarithmic slope of β =...