Results 61 to 70 of about 506,022 (305)

Optimizing the Nitrogen Use Efficiency in Vegetable Crops

open access: yesNitrogen
Nitrogen (N) is the most limiting nutrient for the production of vegetable crops, but anthropogenic sources pose risks due to its transformation into several reactive forms and movement throughout the environment.
Hector Valenzuela
doaj   +1 more source

Hijacking emergency granulopoiesis: Neutrophil ontogeny and reprogramming in cancer

open access: yesMolecular Oncology, EarlyView.
Neutrophils are highly plastic innate immune cells; their functions in cancer extend beyond the tumour microenvironment. This Review summarises current understanding of neutrophil maturation and heterogeneity and highlights tumour‐induced granulopoiesis as a systemic programme that expands immature, immunosuppressive neutrophils via tumour‐derived ...
Gabriela Marinescu, Yi Feng
wiley   +1 more source

Nitrogen and sulfur deposition on regional and global scales : a multimodel evaluation [PDF]

open access: yes, 2006
[1] We use 23 atmospheric chemistry transport models to calculate current and future (2030) deposition of reactive nitrogen (NOy, NHx) and sulfate (SOx) to land and ocean surfaces.
Galloway, J.   +97 more
core   +1 more source

Fractionating proteins with nitrite-reducing activity in “Candidatus Kuenenia stuttgartiensis” strain CSTR1

open access: yesFrontiers in Microbiology
The anammox bacteria “Candidatus Kuenenia stuttgartiensis” (Ca. Kuenenia) are able to gain energy by combining ammonium and nitrite to produce nitrogen gas, which is an ecologically and technically significant activity process.
Emea Okorafor Ude   +5 more
doaj   +1 more source

USP29‐regulated noncanonical stabilization of the hypoxia‐inducible factor‐α in aggressive prostate cancer

open access: yesMolecular Oncology, EarlyView.
We identify USP29 as the only DUB mirroring CA9 expression, a marker of hypoxia and HIF pathway activation associated with PCA aggressiveness. USP29 stabilizes HIF‐1α and HIF‐2α via a noncanonical mechanism that is independent of PHD/pVHL activity yet relies on proteasomal regulation, establishing USP29 as a previously unrecognized regulator of hypoxic
Amelie S Schober   +16 more
wiley   +1 more source

Nitrogen phytoremediation by water hyacinth (Eichhornia crassipes (Mart.) Solms)

open access: yes, 2008
The phytoremediation potential of water hyacinth, Eichhornia crassipes (Mart.) Solms, was examined in two independent studies under nitrogen (N) rates of 0, 40, 80, 100, 150, 200, and 300 ppm.
Rule, J.H.   +3 more
core   +1 more source

Amonio en sistemas acuáticos

open access: yesEDIS
De todos los parámetros de calidad de agua que afectana los peces, el amonio es el más importante después del oxígeno, especialmente en sistemas de cultivo intensivo.
Ruth Francis-Floyd   +4 more
doaj   +1 more source

Patient therapy outcome modeling in cancer organoids is improved by cancer‐associated fibroblasts and organoid assembly convolution

open access: yesMolecular Oncology, EarlyView.
Patient‐derived organoids (PDOs) from pancreatic, colorectal, and gastric cancers were used to evaluate standard and experimental therapies. Incorporating cancer‐associated fibroblasts (CAFs) into organoid cultures improved patient therapy outcome prediction.
Marcin Grochowski   +12 more
wiley   +1 more source

Transboundary Impacts of NO2 on Soil Nitrogen Fixation and Their Effects on Crop Yields in China

open access: yesAgriculture
Nitrogen dioxide (NO2) impacts climate, air quality, soil nitrogen fixation, and crop production, yet its transboundary impacts remain unclear. This study combines 15 global datasets to assess nitrogen’s transboundary impacts on crop yields and soil ...
Jinhui Xie, Peiheng Yu, Xiangzheng Deng
doaj   +1 more source

Reconstructing continental‐scale variation in soil δ15N: a machine learning approach in South America

open access: yesEcosphere, 2020
Soil nitrogen isotope composition (δ15N) is an essential tool for investigating ecosystem nitrogen balances, plant–microbe interactions, ecological niches, animal migration, food origins, and forensics. The advancement of these applications is limited by
João Paulo Sena‐Souza   +3 more
doaj   +1 more source

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