Results 141 to 150 of about 905,566 (388)

Automatic 3D Mapping for Tree Diameter Measurements in Inventory Operations [PDF]

open access: yesarXiv, 2019
Forestry is a major industry in many parts of the world. It relies on forest inventory, which consists of measuring tree attributes. We propose to use 3D mapping, based on the iterative closest point algorithm, to automatically measure tree diameters in forests from mobile robot observations.
arxiv  

Expanding protected areas and incorporating human resource use: a study of 15 forest parks in Ecuador and Peru

open access: yesSustainability: Science, Practice, & Policy, 2006
Data from legal records, management plans, and interviews with 63 local experts reveal the substantial expansion of 15 protected areas (PAs) of forest in Ecuador and Peru during the last two decades.
Lisa Naughton-Treves   +8 more
doaj  

Polyanhydride‐Based Microparticles for Programmable Pulsatile Release of Diphtheria Toxoid (DT) for Single‐Injection Self‐Boosting Vaccines

open access: yesAdvanced Materials, EarlyView.
This study presents a polyanhydride‐based delivery platform for single‐injection, self‐boosting vaccines. The system enables programmable, pulsatile release of diphtheria toxoid with high antigen recovery and is guided by machine learning for tunability. In vivo results show immune responses comparable to multi‐dose regimens, highlighting its potential
Linzixuan Zhang   +17 more
wiley   +1 more source

ForestFit : An R package for modeling tree diameter distributions [PDF]

open access: yesarXiv, 2019
Modeling the diameter distribution of trees in forest stands is a common forestry task that supports key biologically and economically relevant management decisions. The choice of model used to represent the diameter distribution and how to estimate its parameters has received much attention in the forestry literature; however, accessible software that
arxiv  

Harnessing Photo‐Energy Conversion in Nanomaterials for Precision Theranostics

open access: yesAdvanced Materials, EarlyView.
Harnessing photo‐energy conversion in nanomaterials enables precision theranostics through light‐driven mechanisms such as photoluminescence, photothermal, photoelectric, photoacoustic, photo‐triggered surface‐enhanced Raman scattering (SERS), and photodynamic processes. This review explores six fundamental principles of photo‐energy conversion, recent
Jingyu Shi   +4 more
wiley   +1 more source

Determinants of Private Afforestation in the Republic of Ireland [PDF]

open access: yes
This paper employs a panel regression analysis using county-level data to quantify the relative importance of competing forestry and agricultural policy incentives in explaining trends in private afforestation in Ireland. It concludes that an increase in
Alan Matthews   +2 more
core  

Omni‐Directional Assembly of 2D Single‐Crystalline Metal Nanosheets

open access: yesAdvanced Materials, EarlyView.
A versatile assembly method is developed to uniformly assemble 2D single‐crystal copper nanosheets (Cu NS) onto substrates with complex shapes via ultrasonication process. This technique leverages cavitation effects to deposit monolayer Cu NS films with minimal overlap.
Seungyeon Kim   +9 more
wiley   +1 more source

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