Some Analogs of Thiamin and their Physiological Activity<sup>1</sup>

Stein, Gustav A.; Sampson, W. L.; Cline, Joseph K.; Stevens, Joseph R.

doi:10.1021/ja01853a009

Cited by 22 publications

(5 citation statements)

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“…Daily 48-hour atmospheric back-trajectory analyses were determined using the Hybrid Single Particle Lagrangian Integrated Trajectory (HYSPLIT) model (11,12) and were compared with weekly wet plastic deposition rates through 2018. Our analyses suggest that wetdeposited microplastics originate from different source regions than those that are dry deposited.…”

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confidence: 99%

Plastic rain in protected areas of the United States

Brahney

Hallerud

Heim

et al. 2020

Science

789

350

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Eleven billion metric tons of plastic are projected to accumulate in the environment by 2025. Because plastics are persistent, they fragment into pieces that are susceptible to wind entrainment. Using high-resolution spatial and temporal data, we tested whether plastics deposited in wet versus dry conditions have distinct atmospheric life histories. Further, we report on the rates and sources of deposition to remote U.S. conservation areas. We show that urban centers and resuspension from soils or water are principal sources for wet-deposited plastics. By contrast, plastics deposited under dry conditions were smaller in size, and the rates of deposition were related to indices that suggest longer-range or global transport. Deposition rates averaged 132 plastics per square meter per day, which amounts to >1000 metric tons of plastic deposition to western U.S. protected lands annually.

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confidence: 99%

Plastic rain in protected areas of the United States

Brahney

Hallerud

Heim

et al. 2020

Science

789

350

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“…Rapidly varying meteorological conditions require sufficiently robust approaches, especially with curved CH 4 plume structures for which common mass balance methods are too simplistic (29). We addressed this problem by applying an automated plume detection algorithm and quantified the associated emissions using the Lagrangian particle model HYSPLIT (30) driven by meteorological reanalysis products for each detected plume enhancement (>25 ppb averaged over several pixels; supplementary materials) over the whole globe. The detection threshold was adjusted to exclusively capture statistically significant enhancements against highly variable backgrounds (supplementary materials).…”

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confidence: 99%

Global assessment of oil and gas methane ultra-emitters

Lauvaux

Giron

Mazzolini

et al. 2022

Science

193

123

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Methane emissions from oil and gas (O&G) production and transmission represent a considerable contribution to climate change. These emissions comprise sporadic releases of large amounts of methane during maintenance operations or equipment failures not accounted for in current inventory estimates. We collected and analyzed hundreds of very large releases from atmospheric methane images sampled by the TROPOspheric Monitoring Instrument (TROPOMI) between 2019 and 2020. Ultra-emitters are primarily detected over the largest O&G basins throughout the world. With a total contribution equivalent to 8 to 12% (~8 million metric tons of methane per year) of the global O&G production methane emissions, mitigation of ultra-emitters is largely achievable at low costs and would lead to robust net benefits in billions of US dollars for the six major O&G-producing countries when considering societal costs of methane.

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“…Additional meteorological and modeling information supporting the interpretation and validation of the final results was provided by the Bulgarian National Institute of Meteorology and Hydrology [2], as well as by using the Hybrid Single-Particle Lagrangian Integrated Trajectory (HYSPLIT) [3,4] and the Weather Research and Forecasting Model -Global Data Assimilation System (WRF-GDAS) [4] models developed by the Air Resource Laboratory of the National Oceanic and Atmospheric Administration (NOAA), USA. The first one was used for tracing the origin and pathway of the air masses reaching Sofia at different heights during the different case study experiments; the second one was applied to estimating the BLD.…”

Section: Experimental Sites Instrument Specifications and Additional ...mentioning

confidence: 99%

Characterization of the aerosol field over Sofia, Bulgaria, using contact and passive-remote-sensing methods and instruments

Evgenieva

Kolev

Savov

et al. 2022

J. Phys.: Conf. Ser.

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The atmospheric aerosol particles, called also atmospheric particulate matter, that include also fine dust particles (FDP), are an important factor conditioning many physical processes in the atmosphere, affecting the climate and the air quality, and posing serious potential risks to the human health. In this regard, the regular observation of the atmospheric aerosol load and its dynamics is a valuable source of scientific information concerning these processes, while also allowing the relevant institutions to undertake preventive measures in cases of a dangerous FDP concentration increase. This work is devoted to estimating experimentally, by passive optical sensing and contact measurements, some important integral microphysical and optical characteristics and their dynamics of the aerosol ensembles over Sofia, Bulgaria. The results obtained outline the springtime values of the aerosol number and mass concentration in the near-ground urban atmosphere, the depth of the atmospheric boundary layer, the aerosol optical depth at different optical wavelengths, the water vapor content, and the Ångström exponent at the wavelengths of 440/870 nm.

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Some Analogs of Thiamin and their Physiological Activity¹

Cited by 22 publications

References 0 publications

Plastic rain in protected areas of the United States

Plastic rain in protected areas of the United States

Global assessment of oil and gas methane ultra-emitters

Characterization of the aerosol field over Sofia, Bulgaria, using contact and passive-remote-sensing methods and instruments

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Some Analogs of Thiamin and their Physiological Activity1

Cited by 22 publications

References 0 publications

Plastic rain in protected areas of the United States

Plastic rain in protected areas of the United States

Global assessment of oil and gas methane ultra-emitters

Characterization of the aerosol field over Sofia, Bulgaria, using contact and passive-remote-sensing methods and instruments

Contact Info

Product

Resources

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Some Analogs of Thiamin and their Physiological Activity¹