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The first modern planetarium projectors were designed and built in 1924 by the Zeiss Works of Jena, Germany. [2] Zeiss projectors are designed to sit in the middle of a dark, dome-covered room and project an accurate image of the stars and other astronomical objects on the dome. They are generally large, complicated, and imposing machines.
Infection rates dropped and stabilised throughout 2022 and 2023, leading to the end of COVID-19's classification as a severe transmissible disease in June 2023. [ 22 ] Although the pandemic has heavily disrupted the country's economy , [ 23 ] Vietnam's GDP growth rate has remained one of the highest in Asia-Pacific , at 2.91% in 2020.
The COVID-19 pandemic in Southeast Asia is part of the ongoing worldwide pandemic of coronavirus disease 2019 (COVID-19) caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). It was confirmed to have spread to Southeast Asia on 13 January 2020, when a 61-year-old woman from Wuhan tested positive in Thailand , making it the ...
Zeiss formula, a formula for depth of field calculations. Zeiss projector, a line of planetarium projectors manufactured by one of the Zeiss companies; Zeiss Planar, a photographic lens patented by the Zeiss company in 1896; Zeiss Sonnar, a photographic lens patented by the Zeiss company in 1924
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A police car in Hanoi with COVID-19 public health messaging. The Vietnamese government using social media platforms to keep the public informed of COVID-19 news and instructions. Thong Tin Chinh Phu (Governmental Information), the government's official Facebook page, provides nearly hourly updates on the country's pandemic situation. Zalo, a ...
The phase III study is the adaptive, multicenter, randomized, double-blind, placebo control study to evaluate the safety, immunogenicity, and efficacy of the Nanocovax vaccine against COVID-19 in volunteer subjects 18 years of age and older. [17]
The Việt Á scandal was a bribery and corruption scandal that arose during the COVID-19 pandemic in Vietnam. In 2020 and 2021, Việt Á Technology Corporation [ vi ] bribed Vietnamese government officials to sell COVID-19 RT-PCR tests , at a heavy mark-up to provincial health departments and hospitals.