Results 141 to 150 of about 300,695 (305)

Tree-Ring Bulletin, Volume 39 (1979)

, 1979
Complete issue of Tree-Ring Bulletin.Contains: Tree-Ring Dating of Historic Buildings in Arkansas, Response of Tree-Ring Density to Climate in Maine, U.S.A., Dendrochronological Investigations in Iran, Tree-Ring Skeleton Plotting by Computer, Tree-Rings ...

core  

Ferroelectricity in Antiferromagnetic Wurtzite Nitrides

Advanced Functional Materials, EarlyView.
We establish MnSiN2${\rm MnSiN}_2$ and MnGeN2${\rm MnGeN}_2$ as aristotypes of a new multiferroic wurtzite family that simultaneously exhibits ferroelectricity and antiferromagnetism with altermagnetic spin splitting. By strategically substituting alkaline‐earth metals, we predict new materials with coexisting switchable polarization, spin texture, and
Steven M. Baksa, Lin‐Ding Yuan, Stephen D. Wilson, James M. Rondinelli   +3 more
wiley   +1 more source

Data from: Context matters : A multi-scale assessment of riparian tree response to upslope density reduction

1.) We investigated the potential of cross-scale interactions to affect the outcome of density reduction in a large-scale silvicultural experiment to better understand options for managing forests under climate change.
Ruzicka, Kenneth, Ruzicka, Kenneth J., Puttemann, Klaus   +2 more
core  

Different urban densities, different tree cover densities: Evidence from multimodal data in VR-based experiments

Trees, Forests and People
As vital natural elements in cities, trees play a significant role in promoting public health. Previous studies have recognized that there exist optimal ranges of tree cover density in urban environments; however, the relationship between tree cover ...
Leiqing Xu, Xiaan Wu
doaj   +1 more source

Role of Intrinsic Electron Trapping in Negative Charging of Amorphous Alumina

Advanced Functional Materials, EarlyView.
Intrinsic electron trapping in amorphous Al2O3 is examined using hybrid‐DFT models spanning a wide density range. Both spontaneous and thermally activated trapping are identified, with pronounced spontaneous localization in dense, partly crystallized structures.
Jack W. Strand, Kaja H. Hiorth, David Gao, Valeri Afanas'ev, Jaakko Akola, Alexander L. Shluger   +5 more
wiley   +1 more source

Long-term dynamics of density dependence reveals a more stable effect of the neighborhood on tree growth than tree survival.

PLoS ONE
Density dependence is a vital mechanism for explaining tree species diversity. Empirical studies worldwide have demonstrated that neighbor density influences plant survival and growth in various communities.
Liping Wang, Junjie Wu, Fengxian Chen
doaj   +1 more source

Human Gut Bacteria and Lipidic Nanoparticles: Particle Composition Predicts Structural Transformation and Bacterial Biocompatibility

Advanced Functional Materials, EarlyView.
Lipidic nanoparticles (LNPs) were incubated with 21 gut bacteria frequently associated with the human microbiome. SAXS revealed that ∼75% of tested species induced structural transformations in monoolein LNPs, whereas phytantriol and phospholipid formulations remained unaffected.
Jonathan Caukwell, Emily L. Gulliver, Livia Salvati Manni, Frithjof Herb, Caitlin Welsh, Samuel C. Forster, Andrew J. Clulow, Wye‐Khay Fong   +7 more
wiley   +1 more source

Tree-Ring Bulletin, Volume 42 (1982)

, 1982
Complete issue of Tree-Ring Bulletin.Contains: Tree-Ring Society, Density of Tree-Ring Grids in Western North America, Comments on Interpretation on Climatic Information from Tree Rings, Eastern North America, Development of Tree-Ring Chronologies in an ...

core  

Mechanical Behavior and Fracture Mechanisms of MXene/PVDF Nanocomponsites: In Situ Characterization and Multiscale Analysis

Advanced Functional Materials, EarlyView.
Multiscale experiments and modeling reveal how Ti3C2Tx MXene nanosheets reinforce PVDF nanocomposites. An optimal MXene loading (∼1 wt.%) nearly doubles tensile strength through efficient stress transfer, flake alignment, and crack‐deflection mechanisms, transforming ductile polymer behavior into a controlled multi‐stage fracture pathway which aligns ...
Bita Soltan Mohammadlou, James FitzPatrick, Li Meng, Kateryna Shevchuk, Ahmad Najafi, Yury Gogotsi   +5 more
wiley   +1 more source

G. S. C. Tree-Ring Scanning Densitometer and Data Acquisition System

, 1970
A tree-ring scanning densitometer and data acquisition system has been built by the Geological Survey of Canada to extract tree-ring density and tree-ring width data from dendrochronological specimens and X-ray negatives of specimens. The system produces
Jones, F. W., Parker, M. L.
core