نتایج جستجو برای: 083 and 053
تعداد نتایج: 16827693 فیلتر نتایج به سال:
The 11th magnitude star LS IV−083 has been classified previously as an OB star in the Luminous Stars survey, or alternatively as a hot subdwarf. It is actually a binary star. We present spectroscopy, spectroscopic orbital elements, and time series photometry, from observations made at the Kitt Peak National Observatory 2.1m, Steward Observatory 2.3m, MDMObservatory 1.3m and 2.4m, Hobby-Eberly 9...
Background: Proliferating trichilemmal tumors are slow-growing lobulated masses most commonly found on the scalp of elderly women. Due to the locally invasive nature of the lesion, the treatment is complete excision of the tumor with tumor-free margins. Methods: We present two cases of trichilemmal tumors that exhibited aggressive local invasion across tissue planes. The first case had dural in...
Teacher self-efficacy is among the most valued teacher motivational constructs. However, little known about university teachers’ and even less changes to it throughout Covid-19-related online teaching. This study applied a retrospective pre- post-design investigate in teaching (OTSE) during Covid-19. Participants included 160 Chinese teachers, who reported their OTSE before after COVID-19 lockd...
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