نتایج جستجو برای: msfc
تعداد نتایج: 131 فیلتر نتایج به سال:
We present new observations of the early X-ray afterglows of the first 27 gamma-ray bursts (GRBs) well-observed by the Swift X-ray Telescope (XRT). The early X-ray afterglows show a canonical behavior, where the light curve broadly consists of three distinct power law segments: (i) an initial very steep decay (∝ t with 3 . α1 . 5) , followed by (ii) a very shallow decay (0.5 . α2 . 1.0), and fi...
Introduction Multiple sclerosis is a devastating demyelinating disease of young adults, which gradually leads to severe disability and finally exitus. Its perfidious character is uncontrolled to this point by any of the existing medications, either the steroids for the relapses, or the various disease modifying drugs. Furthermore, even if these drugs are alleviating severity and are reducing th...
AIM Chronic cerebrospinal venous insufficiency (CCSVI) is a vascular phenomenon recently described in multiple sclerosis (MS) that is characterized by stenoses affecting the main extracranial venous outflow pathways and by a high rate of cerebral venous reflux that may lead to increased iron deposition in the brain. Aim of this study was to investigate the relationship between CCSVI and iron de...
After emerging to the solar surface, the Sun’s magnetic field displays a complex and intricate evolution. The evolution of the surface field is important for several reasons. One is that the surface field, and its dynamics, sets the boundary condition for the coronal and heliospheric magnetic fields. Another is that the surface evolution gives us insight into the dynamo process. In particular, ...
Low-contrast letter acuity (LCLA) has emerged as the leading outcome measure to assess visual disability in multiple sclerosis (MS) research. As visual dysfunction is one of the most common manifestations of MS, sensitive visual outcome measures are important in examining the effect of treatment. Low-contrast acuity captures visual loss not seen in high-contrast visual acuity (HCVA) measurement...
Walking ability is a vital component of validated test procedures to assess mobility impairment in multiple sclerosis (MS). The methods used to assess walking ability vary widely between treatment centres, and the accuracy of the methods used and numbers of parameters determined to analyse specific aspects of walking and gait are often limited. The questionnaireand task-based methods used to as...
OBJECTIVES Electromagnetic field therapy has been reported to be beneficial in patients with multiple sclerosis (MS) with significant fatigue. This study was designed to evaluate the long-term effects of Bio-Electro-Magnetic-Energy-Regulation (BEMER) on MS-related fatigue. DESIGN This was a monocenter, patient- and rater-blinded, placebo-controlled trial. PATIENTS There were 37 relapsing-re...
Precise measurement of neurological and neuropsychological impairment and disability in multiple sclerosis is challenging. We report a new test, the Multiple Sclerosis Performance Test (MSPT), which represents a new approach to quantifying MS related disability. The MSPT takes advantage of advances in computer technology, information technology, biomechanics, and clinical measurement science. T...
We have monitored a sample of 27 nearby globular clusters in the hard X-ray band (20 − 120 keV) for ∼1400 days using the BATSE instrument on board the Compton Gamma-Ray Observatory. Globular clusters may contain a large number of compact objects (e.g., pulsars or X-ray binaries containing neutron stars) which can produce hard Xray emission. Our search provides a sensitive (∼50 mCrab) monitor fo...
The extraordinary giant flare (GF) of 2004 December 27 from the soft gamma repeater (SGR) 1806-20 was followed by a bright radio afterglow. We present an analysis of VLA observations of this radio afterglow from SGR1806-20, consisting of previously reported 8.5 GHz data covering days 7 to 20 after the GF, plus new observations at 8.5 and 22 GHz from day 24 to 81. We detect motion in the flux ce...
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