Results 101 to 110 of about 223,283 (260)

Impacts of groundwater storage variability on soil salinization in a semi-arid agricultural plain

open access: yesGeoderma
Soil salinization, which is significantly influenced by groundwater storage dynamics, leads to reduced land productivity, loss of arable land, and degradation of vegetation, thereby posing a substantial threat to global food security and ecosystem ...
Geng Cui   +9 more
doaj   +1 more source

The Northern Eurasia Earth Science Partnership: An Example of Science Applied to Societal Needs [PDF]

open access: yes, 2009
Northern Eurasia, the largest landmass in the northern extratropics, accounts for ~20% of the global land area. However, little is known about how the biogeochemical cycles, energy and water cycles, and human activities specific to this carbon-rich, cold
Aizen, Vladimir B.   +23 more
core   +1 more source

Rotation of Crystal Seed During Early Stages of Growth Reveals the Anisotropy of Glass Matrix

open access: yesAdvanced Science, EarlyView.
Molecular dynamics simulations reveal that crystal seeds can spontaneously rotate within glass at high temperatures due to anisotropic forces at the glass‐crystal interface. This rotation challenges the long‐held view of glass as an isotropic solid and highlights how atomic‐scale inhomogeneities can influence crystal growth and microstructure of LiNbO3‐
R. Thapa   +4 more
wiley   +1 more source

Introduction to the sampling designs of the National Ecological Observatory Network Terrestrial Observation System

open access: yesEcosphere, 2016
Global change drivers influence ecological processes at multiple scales and manifest across most of Earth as changes in biodiversity, biogeochemical cycles, infectious disease incidence, and ecohydrology.
Andrea S. Thorpe   +9 more
doaj   +1 more source

Toward Multi-Level, Multi-Theoretical Model Portfolios for Scientific Enterprise Workforce Dynamics [PDF]

open access: yes
Development of theoretically sound methods and strategies for informed science and innovation policy analysis is critically important to each nation's ability to benefit from R&D investments.
Levent Yilmaz
core  

Maternal Preconception Antibiotic Exposure Disrupts Microbial Succession: A Transgenerational Risk for Offspring Gut Mucosal Immaturity and Colitis Susceptibility

open access: yesAdvanced Science, EarlyView.
This study reveals that maternal antibiotic exposure prior to conception disrupts intergenerational gut microbial succession. By enhancing maternal‐offspring microbial transmission, altering microbial developmental trajectories and increasing selective pressures during community assembly, these disturbances lead to persistent gut mucosal immaturity and
Yuzhu Chen   +8 more
wiley   +1 more source

Gemella morbillorum Promotes Colorectal Carcinogenesis: LPBDCP‐Mediated Invasion Activates Ras Signaling and Destabilizes p53

open access: yesAdvanced Science, EarlyView.
ABSTRACT Gut microbiota dysbiosis promotes colorectal cancer (CRC) tumorigenesis. A global fecal metagenomic analysis identified Gemella morbillorum as a key contributor to the CRC‐associated microbiota. Fluorescence in situ hybridization revealed that Gemella morbillorum is enriched in CRC tumor tissues compared to adjacent normal tissues.
Zhen Wang   +8 more
wiley   +1 more source

Coupled Above‐ and Belowground Ecosystem Stability Worldwide

open access: yesAdvanced Science, EarlyView.
Are the worlds above and below our feet in sync? This global exploration reveals an entangled fate between above‐ and belowground ecosystem stability. It identifies arid regions as hotspots for this coupling and highlights temperature stability as a vital safeguard for maintaining ecosystem balance across our warming planet.
Zexin Meng   +18 more
wiley   +1 more source

Diversity Patterns of Domestic Herbivore Viruses in China Reveal Transmission Dynamics with Disease Management Implications

open access: yesAdvanced Science, EarlyView.
This study performs pan‐viromic profiling of 14,529 samples from 5,710 domestic herbivores across five Chinese provinces, establishing the DhCN‐Virome (1,085,360 viral metagenomes). It reveals species/sample‐specific viromic signatures and cross‐species transmission dynamics, aiding unified disease control.
Yue Sun   +19 more
wiley   +1 more source

Effect of mulched drip irrigation on crop biomass and carbon fluxes in maize field

open access: yesAgricultural Water Management
The agroecosystem, a critical component of the terrestrial carbon cycle, plays an indispensable role in maintaining the balance of carbon pools and ensuring global food security.
Hui Guo, Xuhui Wang, Yahui Wang, Sien Li
doaj   +1 more source

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