Results 121 to 130 of about 300,695 (305)

Patterns of Tree Distribution within Small Communities of the Sudanian Savanna-Sahel

open access: yesLand, 2014
Crown diameter and tree density were measured in 52 communities in the Sudan-Sahel using satellite imagery to determine the relationships between rainfall and distance from community center to crown size diameter and tree density.
Sarah J. Sterling, Blair Orr
doaj   +1 more source

PASTA‐ELN: Simplifying Research Data Management for Experimental Materials Science

open access: yesAdvanced Engineering Materials, EarlyView.
Research data management faces ongoing hurdles as many ELNs remain complex and restrictive. PASTA‐ELN offers an open‐source, cross‐platform solution that prioritizes simplicity, offline access, and user control. Its in tuitive folder structure, modular Python add‐ons, and open formats enable seamless documentation, FAIR data practices, and easy ...
S. Brinckmann, G. Winkens, R. Schwaiger
wiley   +1 more source

Tree Tenure in Agroforestry Parklands: Implications for the Management, Utilisation and Ecology of Shea and Locust Bean Trees in Northern Ghana [PDF]

open access: yes, 2009
The management and utilisation of resources in agroforestry systems are influenced by both land and tree tenure systems, especially where land and tree tenure are distinct, and rights to one do not necessarily lead to rights over the other. Most academic
Poudyal, Mahesh
core  

ACUMULACIÓN DE CARBONO Y CAMBIOS ESTRUCTURALES EN BOSQUES SECUNDARIOS DEL ORIENTE ANTIOQUEÑO, COLOMBIA CARBON ACCUMULATION AND STRUCTURAL CHANGES IN SECONDARY FORESTS IN EASTERN ANTIOQUIA, COLOMBIA

open access: yesActualidades Biológicas, 2011
En el Oriente antioqueño (Antioquia), Colombia, en tierras utilizadas previamente en ganadería extensiva, se estudió la sucesión secundaria analizando la densidad arbórea, área basal y biomasa aérea.
Miguel A. Peña   +2 more
doaj  

Direct Metal Deposition of Graphene–Ti28Nb35.4Zr Matrix Composites With Enhanced Mechanical, Corrosion, and Biocompatibility Properties for Bone Implants

open access: yesAdvanced Engineering Materials, EarlyView.
Graphene nanoplatelet (0.1 wt.%) reinforcement significantly enhances the performance of β Ti‐28Nb‐35.4Zr alloy. Grain refinement, reduced water contact angle, and improved surface characteristics promote osteoblast adhesion and complete surface coverage after 7 days.
Khurram Munir   +5 more
wiley   +1 more source

A Computer Program for Simulating Cambial Activity and Ring Growth

open access: yes, 1975
This paper describes an interactive computer program which simulates daily cell growth and differentiation in a single radial file of tree cells. The growth processes are controlled by 22 model parameters, half of which are constants, the remainder time ...
Stevens, Donal W.
core  

Above- and below-ground competition in high and low irradiance: tree seedling responses to a competing liana Byttneria grandifolia

open access: yes, 2008
: In tropical forests, trees compete not only with other trees, but also with lianas, which may limit tree growth and regeneration. Liana effects may depend on the availability of above- and below-ground resources and differ between tree species.
Bongers, F   +7 more
core   +1 more source

Encyclopedia of 2D β′‐In2Se3 Growth Using Chemical Vapor Deposition: The Effects of Synthesis Parameters Onto Material Quality

open access: yesAdvanced Engineering Materials, EarlyView.
A distinct semi‐confined inner‐tube chemical vapor deposition geometry enables reproducible, large‐area growth of phase‐pure 2D β′‐In2Se3 from InI + Se precursors. Engineering local vapor transport and optimizing precursor delivery and temperature–time conditions yield uniform continuous films.
Dasun P. W. Guruge   +8 more
wiley   +1 more source

Multivariate Density Estimation and Visualization [PDF]

open access: yes
This chapter examines the use of flexible methods to approximate an unknown density function, and techniques appropriate for visualization of densities in up to four dimensions. The statistical analysis of data is a multilayered endeavor.
Scott, David W.
core  

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

open access: yesAdvanced 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   +6 more
wiley   +1 more source

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