Some are visible, such as dust, whereas others cannot be seen by the naked eye.
Materials such as metals, microplastics, soil and chemicals can be in particulate matter.
Particulate matter (or PM) is described in micrometres. The two main ones mentioned in reports and studies are PM10 (less than 10 micrometres) and PM2.5 (less than 2.5 micrometres).
Air pollution comes from burning fossil fuels, cars, cement making and agriculture
Scientists measure the rate of particulates in the air by cubic metre.
Particulate matter is sent into the air by a number of processes including burning fossil fuels, driving cars and steel making.
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Remembering Professor James Hakim and Professor David Katzenstein
chris posted on 1/26/2021 7:00:00 PM
IAS â the International AIDS Society â mourns the passing of two world-leading HIV scientists, David Katzenstein, Professor of Medicine at Stanford University, and James Hakim, Professor of Medicine at the University of Zimbabwe College of Health Sciences, who died from COVID-19 related complications.
âWe send our deepest condolences to Davidâs and Jamesâ families and loved ones at this difficult time,â said Adeeba Kamarulzaman, President of the IAS. âIn the last few days, we have lost two great HIV scientists and humanitarians to COVID-19. Both are giants in our field who have made significant contributions to advance HIV research and science, improving the lives of people living with HIV across the world. This is such a great loss for the HIV community and beyond.â
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Dr. Jay Bhattacharya is a Professor of Medicine at Stanford University, where he received both an M.D. and a Ph.D. in economics. He is also a research associate at the National Bureau of Economics Research, a senior fellow at the Stanford Institute for Economic Policy Research and at the Freeman Spogli Institute for International Studies, and director of the Stanford Center on the Demography and Economics of Health and Aging. A co-author of the Great Barrington Declaration, his research has been published in economics, statistics, legal, medical, public health, and health policy journals.
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LONDON, Dec. 17, 2020 /PRNewswire/ Elsevier, a global leader in research publishing and information analytics, is pleased to announce that Dr. Hannah Valantine, Professor of Medicine at Stanford University and former National Institutes of Health (NIH) Chief Scientific Officer for Scientific Workforce Diversity has been appointed to the company s independent Inclusion and Diversity Advisory Board.
Dr. Valantine will join nine other distinguished research leaders who are members of the Elsevier Inclusion and Diversity Board. Established in March 2020 and chaired by Kumsal Bayazit, Elsevier CEO, and Dr. Richard Horton, Editor-in-Chief of
The
Lancet, the Board aims to create a more equitable research ecosystem through standards, best practices and initiatives that support long-term, measurable change. These include actions to bring about greater balance in gender, racial, ethnic and geographic representation in academic research, for exam