Results 51 to 60 of about 48,267 (254)

Pharmacological inhibition of the PERK pathway modulates hepatocellular carcinoma growth and immune signaling

FEBS Open Bio, EarlyView.
Pharmacological inhibition of PERK in a DEN‐induced mouse model of liver cancer does not reduce tumor burden but alters cellular stress signaling. Despite blocking PERK activity, downstream stress responses, including CHOP expression, remain active, suggesting compensatory mechanisms within the unfolded protein response that may influence tumor ...
Ada Lerma‐Clavero, Maria Kopsida, Nathalie Arendt, Hans Lennernäs, Markus Sjöblom, Femke Heindryckx   +5 more
wiley   +1 more source

Environmental Controls on the Riverine Export of Dissolved Black Carbon [PDF]

Global Biogeochemical Cycles, 2019
AbstractEach year, tropical rivers export a dissolved organic carbon (DOC) flux to the global oceans that is equivalent to ~4% of the global land sink for atmospheric CO2. Among the most refractory fractions of terrigenous DOC is dissolved black carbon (DBC), which constitutes ~10% of the total DOC flux and derives from the charcoal and soot (aerosol ...
Matthew W. Jones, Luiz E. O. C. de Aragão, Thorsten Dittmar, Carlos E. de Rezende, Marcelo G. Almeida, Ben T. Johnson, Jomar S. J. Marques, Jutta Niggemann, Thiago P. Rangel, Timothy A. Quine   +9 more
openaire   +4 more sources

UAV-Based Estimation of Carbon Exports from Heterogeneous Soil Landscapes—A Case Study from the CarboZALF Experimental Area

Sensors, 2016
The advantages of remote sensing using Unmanned Aerial Vehicles (UAVs) are a high spatial resolution of images, temporal flexibility and narrow-band spectral data from different wavelengths domains.
Marc Wehrhan, Philipp Rauneker, Michael Sommer   +2 more
doaj   +1 more source

Carbon Export in the Seasonal Sea Ice Zone North of Svalbard From Winter to Late Summer

Frontiers in Marine Science, 2021
Phytoplankton blooms in the Arctic Ocean's seasonal sea ice zone are expected to start earlier and occur further north with retreating and thinning sea ice cover.
Christine Dybwad, Philipp Assmy, Lasse M. Olsen, Ilka Peeken, Anna Nikolopoulos, Thomas Krumpen, Achim Randelhoff, Achim Randelhoff, Agnieszka Tatarek, Józef M. Wiktor, Marit Reigstad   +10 more
doaj   +1 more source

Multimodal Data‐Driven Microstructure Characterization

Advanced Engineering Materials, EarlyView.
A self‐consistent autonomous workflow for EBSP‐based microstructure segmentation by integrating PCA, GMM clustering, and cNMF with information‐theoretic parameter selection, requiring no user input. An optimal ROI size related to characteristic grain size is identified.
Qi Zhang, Santiago Benito, Özge Özgün, Sebastian Weber, Markus Stricker   +4 more
wiley   +1 more source

High‐Temperature Nanoindentation of Metals: Assessing Thermal Drift, Frame Compliance, and Chemical Composition Effects on the Reported Mechanical Properties

Advanced Engineering Materials, EarlyView.
Do not let thermal drift and instrument artifacts deceive high‐temperature nanoindentation results. We compare classical Oliver–Pharr and automatic image recognition analyses across steels and a Ni alloy to quantify these effects. Accounting for artifacts reveals systematic softening with temperature, while Cr and Ni additions boost resistance ...
Velislava Yonkova, Steffen Brinckmann, Ruth Schwaiger   +2 more
wiley   +1 more source

Hydrological controls on dissolved carbon export from permafrost peatland catchments of northeastern China

Frontiers in Environmental Science
Peatlands in Eurasian permafrost regions are among the world’s most important soil carbon reservoirs and may strongly influence future climate through carbon release.
Shujie Wang, Shujie Wang, Yuedong Guo, Yuedong Guo, Hao Zhang, Hao Zhang, Yaqin Miao, Yaqin Miao   +7 more
doaj   +1 more source

Effects of Light Quality and Intensity on Diurnal Patterns and Rates of Photo-Assimilate Translocation and Transpiration in Tomato Leaves

Frontiers in Plant Science, 2018
Translocation of assimilates is a fundamental process involving carbon and water balance affecting source/sink relationships. Diurnal patterns of CO2 exchange, translocation (carbon export), and transpiration of an intact tomato source leaf were ...
Jason Lanoue, Jason Lanoue, Evangelos D. Leonardos, Bernard Grodzinski   +3 more
doaj   +1 more source

Warming and monsoonal climate lead to large export of millennial-aged carbon from permafrost catchments of the Qinghai-Tibet Plateau

Environmental Research Letters, 2020
Permafrost carbon pool destabilization causes substantial fluvial export of soil carbon, yet the export patterns and magnitudes are not well understood. Here we investigated the radiocarbon ( ^14 C) in dissolved organic and inorganic carbon (DOC and DIC,
Chunlin Song, Genxu Wang, Negar Haghipour, Peter A Raymond   +3 more
doaj   +1 more source

Microstructure Reconstruction in Battery Electrodes Using Machine Learning Based on Low‐Voltage Focused Ion Beam–Scanning Electron Microscopy Tomography Images

Advanced Engineering Materials, EarlyView.
Low‐voltage FIB‐SEM tomography combined with a image preprocessing pipeline improves phase contrast and enables reliable machine‐learning segmentation of conductive networks in lithium‐ion battery electrodes. Structural descriptors are extracted from segmented images, done semimanually and automated, and compared.
Lisa Beran, Vincent Nebel, Dominik Perius, Kshitij Kumar, Yannis Heim, Laura Bies, Tobias Kraus   +6 more
wiley   +1 more source