Abstract: The presence of students is one the important things in lecture activities. Student attendance data can be used as an indicator student discipline and a determinant eligibility to take exam. recording at Universal University still done manually by signing register document. problem that arises from using manual method sign other students, requires supervision, burdens administration m...

We studied the effect in vitro of various concentrations of Triton WR-1339 on normolipidemic canine plasma and on the high density lipoproteins (HDL) isolated from this plasma by ultracentrifugation. As a preamble to this study, we established that Triton WR-1339 has a unimer molecular weight of 4,500, a micellar molecular weight of 180,000, and a critical micellar concentration (CMC) of 0.018 ...

Abstract The possible occurrence of major space weather events, such as large solar flares within one hundred years, is studied anticipating their effects on our social facilities. However, the continuous soft X-ray (SXR) observation by Geostationary Operational Environmental Satellites (GOES) started in 1975, and period data collection less than 50 years. On other hand, ground-based sunspot ob...