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Air pollution is the presence of substances in the atmosphere that are harmful to humans and other living beings, or cause damage to the environment. Air pollution can be chemical, physical or biological. [1]
Since the release of the initial 1989 study, titled A study of interior landscape plants for indoor air pollution abatement: An Interim Report, [6] further research has been done including a 1993 paper [7] and 1996 book [8] by B. C. Wolverton, the primary researcher on the original NASA study, that listed additional plants and focused on the removal of specific chemicals.
Aviation includes the activities surrounding mechanical flight and the aircraft industry. Aircraft includes fixed-wing and rotary-wing types, morphable wings, wing-less lifting bodies, as well as lighter-than-air aircraft such as hot air balloons and airships.
The 4th Military Region of Vietnam People's Army, is directly under the Ministry of Defence of Vietnam, tasked to organise, build, manage and command armed forces defending the North Central Vietnam.
Giải âm (chữ Hán: 解音) refers to Literary Vietnamese translations of texts originally written in Literary Chinese. [1] These translations encompass a wide spectrum, ranging from brief glosses that explain individual terms or phrases to comprehensive translations that adapt entire texts for a Vietnamese reader.
Trẫm không thể không ngậm ngùi khi nghĩ đến các tiên đế đã chiến đấu trên bốn trăm năm để mở mang bờ cõi từ Thuận Hóa đến Hà Tiên. Trẫm không khỏi tiếc hận là trong hai mươi năm ở ngôi, Trẫm không thể làm gì đem lại lợi ích đáng kể cho đất nước.
Qwan Ki Do or Quán Khí Đạo is a Vietnamese martial art that was codified in France in 1981. Qwan Ki Do is practiced internationally, with schools in Asia and Europe. The practice combines the use of hand-to-hand techniques and weapons, with moves combined in both formalised combinations, termed Thao Quyen, and freeform settings.
The government of the Nguyễn dynasty, officially the Southern Court (Vietnamese: Nam Triều; chữ Hán: 南朝) [a] historicaly referred to as the Huế Court (Vietnamese: Triều đình Huế; chữ Hán: 朝廷化), centred around the Emperor (皇帝, Hoàng Đế) as the absolute monarch, surrounded by various imperial agencies and ministries which stayed under the emperor's presidency.