Theresearchersgatheredtogether24volunteersandtestedtheirperformancein threedifferentsimulatedofficeenvironments.Thekeymetrichereisparts-per- million(ppm)ofCO2:5,000ppmiscurrentlyconsideredthesafelimitforan8-hour workday,while90,000ppmwillkillyouwithinf5minutes. Theteamexperimentedwiththreedifferentlevelsoverthecourse...
of health effects. These may include headaches, dizziness, restlessness, a tingling or pins or needles feeling, difficulty breathing, sweating, tiredness, increased heart rate, elevated blood pressure, coma, asphyxia to convulsions and even frostbite if exposed to dry ice. The levels of CO2 in ...
This article reviews the sources, levels, and interpretation of CO2 and VOC concentrations in buildings. The use of an enrichment factor to identify emission sources and potential IAQ problems is suggested. The indicator is evaluated by collecting concentration data in two office buildings and by ...
Carbon Dioxide Levels and Summertime Ventilation Rates in UK Schools Measurements of metabolic carbon dioxide concentration made in four classrooms in two schools are reported for both occupied and unoccupied periods. Measur... A Beisteiner,DA Coley - 《International Journal of Ventilation》 被引量:...
Exposure to CO2 and VOCs at levels found in Conventional office buildings was associated with lower cognitive scores than those affiliated with levels of these compounds found in a Green building. KEY TAKEAWAY: These findings have wide-ranging implications because this study was designed to reflect ...
Elevated CO2 levels promote both carbon and nitrogen cycling in global forests Jinglan Cui Miao Zheng Baojing Gu Nature Climate Change(2024) Transition from positive to negative indirect CO2 effects on the vegetation carbon uptake Zefeng Chen
is adequate, easily accessible and flexible; and the Copenhagen agreement to help reduce concentrationsofCO2inthe atmosphere to no more than 350 parts per million; implying the need for a 40% global greenhouse gas emissions reduction by 2020 from 1990 levels and an 80% emissions reduction by ...
While these options all help stabilize levels of CO2 in the atmosphere, the challenge is economics. Storage would seem the obvious choice, as the geologic-storage-reservoir potential is vast, and the technology involved is mature. But storing CO2 at scale is a pure ...
Sharply rising carbon dioxide (CO2) levels in the air have escalated a climate crisis that affects the living conditions of humankind, leading to the most uncertain natural environment on our planet since the agricultural revolution1,2. Carbon capture, utilization, and storage (CCUS) is a widely...
One option to reduce atmospheric CO levels is to capture and sequester power plant CO. Commercial CO capture technology, though expensive, exists today. Ho... Herzog,H.J,E.E - 《Office of Scientific & Technical Information Technical Reports》 被引量: 83发表: 1996年 Airline Business Models an...