We report on follow-up spectroscopy and photometry of the cataclysmic variable candidate HS 0907+1902 selected from the Hamburg Quasar Survey. B, V , and R photometry obtained during the first observed outburst of HS 0907+1902 (V ≈ 13) reveals deep eclipses (∆V ≈ 2.1 − 2.8) and an orbital period Porb = 4.2 h with the eclipse depth decreasing to the red. The outburst eclipse profiles are symmetr...

A novel high-capacity hip wear simulator of the pin-on-disc type was designed, built, and validated. This so-called Super-CTPOD (circularly translating pin-on-disc) device has as many as 100 separate test stations, being an advanced version of the previously validated 12-station CTPOD. A validity test was done so that in all stations the specimens and the test conditions were as similar as poss...

The analysis of polar compounds, such as acids and bases, typically requires ion pairing reagents or Hydrophobic Interaction Chromatography (HILIC) columns in HPLC. In this work, the utility of phenyl columns is demonstrated using 100% aqueous mobile phase, without the inconvenience of phase collapse. Selectivity of different Agilent ZORBAX phenyl phases (StableBond SB-Phenyl, Eclipse XDB-Pheny...

A total solar eclipse occurred at the ascending node of Moon's orbit on 2 July 2019, with an magnitude 1.0459. The totality was visible from southern Pacific Ocean east New Zealand to Coquimbo Region (Chile) and Central Argentina sunset, maximum 4 min 32 s Ocean. recent Great American Eclipse, 21 August 2017, clearly showed that ionosphere is strongly affected by totality. In order explore iono...

The accuracy of dose calculations at extended SSD is of significant importance in the dosimetric planning of total body irradiation (TBI). In a first step toward the implementation of electronic, multi-leaf collimator compensation for dose inhomogeneities and surface contour in TBI, we have evaluated the ability of the Eclipse AAA to accurately predict dose distributions in water at extended SS...

Satellite potentials in the outer plasmasphere range from near zero to +5 to +10 V. Under such conditions ion measurements may not include the low energy core of the plasma population. In eclipse, the photoelectron current drops to zero, and the spacecraft potential can drop to near zero volts. In regions where the ambient plasma density is below 100 cm, previously unobserved portions of the am...

The variability of ionospheric response to the total solar eclipse of 22 July 2009 has been studied analyzing the GPS data recorded at the four Indian low-latitude stations Varanasi (100 % obscuration), Kanpur (95 % obscuration), Hyderabad (84 % obscuration) and Bangalore (72 % obscuration). The retrieved ionospheric vertical total electron content (VTEC) shows a significant reduction (reflecte...

The addition of synthetic fibers to natural grass athletic fields forms a hybrid turf system, and this system claims increase traffic tolerance playability. objectives research were evaluate the physical effects simulated on two hybrid, carpet-based mat systems (Eclipse Hero) with Kentucky bluegrass (Poa pratensis L.), compared non-hybrid control (100% bluegrass). Field was conducted in 2018 at...

This article presents the results of a week observations around 2 July 2019, total Chilean eclipse. The eclipse occurred between 19:22 and 21:46 UTC, with complete sun disc obscuration at 20:38–20:40 UTC (16:38–16:40 LT) over Andes Lidar Observatory (ALO) (30.3°S, 70.7°W). Observations were carried out using ALO instrumentation goal to observe possible eclipse-induced effects on mesosphere lowe...

Particle data from two geosynchronous satellites (Applied Technology Satellite 6 and SCATHA) show a normally hidden ion population appearing when the satellites are in the earth's shadow. Ion and electron data show the spacecraft potential dropping from +10 V in sunlight to +4 to +5 V in eclipse at local midnight, in low-energy (T < 1 keV) plasma sheet environments. During eclipse, a cold (T = ...