Results 111 to 120 of about 3,419,395 (293)

Concentration-Dependent Regulation of Nitric Oxide on Soybean Nodulation and Nitrogen Fixation, and Its Direct and Indirect Effects in a Pot Experiment

open access: yesAgronomy
Biological nitrogen fixation is an important support for sustainable agricultural development. The symbiotic nitrogen fixation system between legumes and rhizobia is the core of biological nitrogen fixation in nature.
Kun Liu   +3 more
doaj   +1 more source

Anisotropic Memristive Switching in NbOCl2 Enabled by Directional Oxygen Ion Migration

open access: yesAdvanced Science, EarlyView.
This study investigates strongly orientation‐dependent memristive switching in anisotropic NbOCl2, observed exclusively along the in‐plane c‐axis. The switching originates from direction‐selective oxygen‐ion migration and vacancy propagation that modulate the Pd/NbOCl2 Schottky barrier, enabling short‐term plasticity.
Caokun Wang   +6 more
wiley   +1 more source

A Generative Neuro‐Symbolic AI for Protein Sequence Design

open access: yesAdvanced Science, EarlyView.
We introduce EffieDes, a neuro‐symbolic framework coupling deep learning‐based fitness landscape parameterization with exact automated reasoning. Unlike greedy sampling, EffieDes identifies sequences that globally optimize fitness while satisfying intricate design constraints.
Marianne Defresne   +12 more
wiley   +1 more source

Phosphorus Use Efficiency for N2 Fixation in the Rhizobial Symbiosis with Legumes

open access: yes, 2015
Symbiotic nitrogen fixation (SNF) by legumes may provide an ecologically acceptable complement or substitute for mineral nitrogen fertilizers that farmers try to minimize for economic limitation and environment sake. However, phosphorus (P) deficiency is
Sveriges lantbruksuniversitet.   +2 more
core   +1 more source

RPLP2 Mediates the Beneficial Effects of Exercise on Stress Resistance Through Muscle–Brain Communication

open access: yesAdvanced Science, EarlyView.
A novel exercise‐inducible myokine acidic ribosomal protein P2 (RPLP2), initially identified from human trials, is presented here, whose circulating levels negatively correlate with clinical anxiety severity. Muscle‐derived RPLP2 enhances hippocampal ribosomal assembly and adult neurogenesis to rescue stress‐induced anxiety deficits.
Peiyu Luo   +18 more
wiley   +1 more source

The model legume Medicago truncatula A17 is poorly matched for N2fixation with the sequenced microsymbiont Sinorhizobium meliloti 1021 [PDF]

open access: yes, 2008
Medicago truncatula (barrel medic) A17 is currently being sequenced as a model legume, complementing the sequenced root nodule bacterial strain Sinorhizobium meliloti 1021 (Sm1021). In this study, the effectiveness of the Sm1021-M.
Terpolilli, J.J.   +4 more
core  

Effects of biological agents on rhizosphere microecological environment and nutrient availability for rice

open access: yesFrontiers in Microbiology
As the world’s population grows, pursuing sustainable agricultural production techniques to increase crop yields is critical to ensuring global food security.
Hang Zhou   +14 more
doaj   +1 more source

EphB1‐Mediated Transient Blood‐Brain Barrier Opening Facilitates a Ferritin‐Based Nanotherapeutic for Alzheimer's Disease

open access: yesAdvanced Science, EarlyView.
We constructed a brain‐targeted AFn‐DPZ nanodrug delivery system and identified EphB1 as its receptor on the blood‐brain barrier (BBB). This system facilitates drug transport across the BBB and thereby ameliorates cognitive impairment in Alzheimer's disease.
Shilin Wen   +5 more
wiley   +1 more source

Sustained Delivery of a Shingles Subunit Vaccine Overcomes Age‐Related Declines in Humoral and Cellular Immunity Relative to Shingrix

open access: yesAdvanced Science, EarlyView.
Sustained delivery of a shingles subunit vaccine from an injectable polymer–nanoparticle hydrogel enhanced the potency, durability, and breadth of immune responses in aged mice while minimizing inflammatory cytokine production and reactogenicity. This strategy decouples immunogenicity from reactogenicity and offers a promising approach to improve ...
Ye Eun Song   +5 more
wiley   +1 more source

Biological Nitrogen Fixation

open access: yes
<p dir="ltr">Biological nitrogen fixation supplies the largest quantity of new, natural nitrogen to terrestrial ecosystems, but little is known about its function and controls in tropical forests. Recent work at Barro Colorado Island and the facilities of the Smithsonian Tropical Research Institute has made substantial advances in our ...
Preety Tomar   +2 more
openaire   +3 more sources

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