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Category : Science

Running calculations with < in Excel

My day job is as a building scientist, I help people understand the impact that the built environment has on their health, well-being and productivity through data driven consulting. This means that I often conduct environmental quality testing to establish concentrations of pollutants in the air, in water, in materials or on surfaces. Without going into too much detail, when a result is obtained from our in-house lab or an external lab often the result is below the detection limit […]

SARS-CoV-2

Coronavirus (SARS-CoV-2) is of significant concern worldwide, but what exactly is the virus, what does it cause and what is the concern? What is SARS-CoV-2? The phrase coronavirus has been used many times, technically whilst the virus is a coronavirus this phrase refers to the family of viruses rather than the specific virus itself. coronaviruses are a large family of viruses, some of these viruses cause illness in humans whilst others cause illness in animals (e.g. bats). Rarely, animal coronaviruses […]

Indoor Environmental Quality – Carbon Dioxide

What is Carbon Dioxide? Carbon Dioxide (CO2) is often used within the indoor environment as a way to determine the ventilation rate. When an indoor environment is unoccupied and there is air entering from outside the concentration of carbon dioxide will eventually reach the same as the outdoor levels.¬†When people enter the space, as a result of breathing they produce carbon dioxide (amongst other things) and over time the concentrations increase [2]. Whilst many buildings are designed to have specific […]