Results 31 to 40 of about 10,199,905 (275)

Liver organoids: modelling complexity in homeostasis and disease

FEBS Letters, EarlyView.
Studying liver in vitro has been challenging because simple 2D cell cultures fail to capture liver's cellular and architectural complexity. To bridge this gap, scientists increasingly use organoids, 3D liver models which better mimic liver composition and function. This review examines recent advances in liver organoid complexity and realism, discusses
Anna M. Dowbaj, Meritxell Huch
wiley   +1 more source

Measured Canadian oil sands CO2 emissions are higher than estimates made using internationally recommended methods

Nature Communications, 2019
Evaluating GHG emissions reported to inventories for the oil and gas (O&G) sector is important for countries with resource-based economies. Here the authors provide a top-down assessment of GHG emissions from the Canadian oil sands and find previous ...
John Liggio, Shao-Meng Li, Ralf M. Staebler, Katherine Hayden, Andrea Darlington, Richard L. Mittermeier, Jason O’Brien, Robert McLaren, Mengistu Wolde, Doug Worthy, Felix Vogel   +10 more
doaj   +1 more source

Implementation of a dry deposition module (DEPAC v3.11_ext) in a large eddy simulation code (DALES v4.4) [PDF]

Geoscientific Model Development
High-resolution data on reactive nitrogen deposition are needed to inform cost-effective policies. Large eddy simulation models coupled to a dry deposition module present a valuable tool for obtaining these high-resolution data. In this paper we describe
L. Geers, R. Janssen, G. Thorkelsdottir, G. Thorkelsdottir, G. Thorkelsdottir, J. Vilà-Guerau de Arellano, M. Schaap   +6 more
doaj   +1 more source

Functional comparison of EncB and EncC cargo proteins in iron storage within the Myxococcus xanthus encapsulin

FEBS Letters, EarlyView.
Encapsulins are protein nanocompartments that play an important role in iron storage. In the Myxococcus xanthus encapsulin system, two cargo proteins called EncB and EncC contribute to iron mineralization. Here, we show that EncB and EncC generate iron‐containing minerals with distinct chemical compositions, suggesting that the composition of stored ...
Harry B. McDowell, Thomas Walther, Egbert Hoiczyk   +2 more
wiley   +1 more source

Analysis of air quality based on national monitoring networks in the Republic of Korea, 2023 - annual trends in air quality over two decades in South Korea-

Asian Journal of Atmospheric Environment
In this study, to assess the long-term air quality status in South Korea, we analyzed the concentration and attainment rate of air quality standards for 8 pollutants such as SO₂, NO₂, CO, O₃, PM₁₀, PM₂.₅, Pb, and benzene.
Soyoung Kang, ChanJung An, Dayeong Lee, Dong-Hee Jung, Eunsun Jeong, Jinju Jeong, In-Ho Song, Hye Jung Shin, Seung-Ha Lee, Hae-Jin Jung, Yong-Jae Lim, Jung Min Park, Jiwon Seong   +12 more
doaj   +1 more source

The importance of moist thermodynamics on neutral buoyancy height for plumes from anthropogenic sources [PDF]

Atmospheric Chemistry and Physics
Plume rise plays a critical role in dispersing pollutants emitted from tall stacks, dictating the height reached by buoyant plumes and their subsequent downwind dispersion.
S. Fathi, P. Makar, W. Gong, J. Zhang, K. Hayden, M. Gordon   +5 more
doaj   +1 more source

Simulating the integrated summertime Δ¹⁴CO₂ signature from anthropogenic emissions over Western Europe [PDF]

Atmospheric Chemistry and Physics, 2014
Radiocarbon dioxide (14CO2, reported in Δ14CO2) can be used to determine the fossil fuel CO2 addition to the atmosphere, since fossil fuel CO2 no longer contains any 14C.
D. Bozhinova, M. K. van der Molen, I. R. van der Velde, M. C. Krol, S. van der Laan, H. A. J. Meijer, W. Peters   +6 more
doaj   +1 more source

L‐aspartate oxidase provides new insights into fumarate reduction in anaerobic darkness in Synechocystis sp. PCC6803

FEBS Letters, EarlyView.
Synechocystis strains deficient in succinate dehydrogenase (SDH) secrete more succinate than the WT under dark anaerobic conditions, supporting that SDH then primarily acts as SDH, not as a fumarate reductase. L‐aspartate oxidase (Laspo) from Synechocystis is functional under anaerobic conditions, reducing fumarate to succinate.
Kateryna Kukil, Jeffrey A. Hawkes, Cecilia Blikstad, Pia Lindberg   +3 more
wiley   +1 more source

Assessment Campaign of the Gravimetric Method (PM₁₀ and PM_2.5): Analyzing Environmental Artifacts and Metrological Consistency for the 2030 Regulatory Challenge

Atmosphere
Air quality assessment for atmospheric particulate matter (PM) faces significant metrological challenges due to the lack of Certified Reference Materials and sampler design discrepancies. This study evaluates the comparability of the EN 12341 gravimetric
Antonio Amoroso, Giada Marchegiani, Diego Capobianco, Fabio Cadoni, Cristiano Ravaioli, Patrizia Leone, Damiano Centioli   +6 more
doaj   +1 more source

The dynamics and atmospheric impact of fire-induced circulations in idealised large-eddy simulations inspired by the Santa Coloma de Queralt fire [PDF]

Atmospheric Chemistry and Physics
We studied the factors governing the existence of fire-induced circulations ahead of the flaming zone and the impact of these circulations on the thermodynamic structure of the atmospheric boundary layer.
T. Roelofs, M. Castellnou, M. Castellnou, J. Vilà-Guerau de Arellano, M. Janssens, C. van Heerwaarden   +5 more
doaj   +1 more source