Human beings need to breathe oxygen diluted in certain quantity of inert gas for living. In the atmosphere, there is a gas mixture of, mainly, oxygen and nitrogen, in appropriate proportions. However, the air also contains other gases, vapours and aerosols that humans incorporate when breathing and whose composition and concentration vary spatially. Some of these are physiologically inert. Air pollution has become a problem of major concern in the last few decades as it has caused negative effects on human health, nature and properties....
For my graduate research in Anton Zeilinger’s experimental physics group  in Vienna I participated in
an experiment that successfully demonstrated quantum behavior for the heaviest particles ever, by
sending them – as quantum mechanical matter waves – through a double-slit experiment . The particles
were C60 buckminsterfullerenes (or buckyballs for short), named after their resemblance to architect
Buckminster Fuller’s geodesic domes . Consisting of sixty carbon atoms, buckyballs have the shape of
Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: IResearch Article Suboptimal Partial Transmit Sequence-Active Interference Cancellation with Particle Swarm Optimization
Experts agree that source control is the only completely effective way to remove
pollutants from indoor environments. They also agree that total eradication of indoor
air pollutants is often not feasible or practical. A more realistic goal is to use building
materials, furnishings, finishes, office equipment, cleaning products and processes that
emit low levels of VOCs.
Depository institutions transmit ACH payments to the Reserve Banks
in batches, rather than individually. ACH funds transfers are generally
processed within one to two days, according to designated schedules,
and are delivered to receiving institutions several times a day, as they are
processed. The Reserve Banks offer ACH operator services to all deposi-
tory institutions. A private-sector processor also provides ACH operator
services in competition with the Reserve Banks.
The infectiousness of a TB patient is directly related to the number of droplet nuclei carrying
M. tuberculosis (tubercle bacilli) that are expelled into the air. Depending on the environment, these tiny particles can remain suspended in the air for several hours. M. tuberculosis is transmitted through the air, not by surface contact. Infection occurs when a person inhales droplet nuclei containing
M. tuberculosis, and the droplet nuclei traverse the mouth or nasal passages, upper respiratory tract, and bronchi to reach the alveoli of the lungs.
M. tuberculosis is carried in airborne particles, called droplet nuclei, of 1–5 microns in diameter. Infectious droplet nuclei are generated when persons who have pulmonary or laryngeal TB disease cough, sneeze, shout, or sing. Depending on the environment, these tiny particles can remain suspended in the air for several hours. M. tuberculosis is transmitted through the air, not by surface contact. Transmission occurs when a person inhales droplet nuclei containing M.