Results 81 to 90 of about 93,168 (289)

Resin canals in spruce (Picea abis /L./ Karst.) with the occurrence of reaction wood

Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2005
The paper was aimed at the determination of variability of horizontal resin canal dimension in spruce wood in relation to the position in a spruce stem.
Vladimír Gryc, Petr Horáček
doaj   +1 more source

Classification of tree species and standing dead trees in Boreal forests using UAV‐based RGB, multispectral, and LiDAR point clouds

Remote Sensing in Ecology and Conservation, EarlyView.
We evaluated single‐ and multi‐sensor UAV approaches for classifying tree species and standing dead trees in boreal forests, focusing on key biodiversity indicators such as European aspen. Using spectral and structural features extracted from RGB, multispectral (MSP), and LiDAR point clouds for 1,205 field‐measured trees, we compared classification ...
Anton Kuzmin, Lauri Korhonen, Topi Tanhuanpää, Mikko Kukkonen, Matti Maltamo, Timo Kumpula   +5 more
wiley   +1 more source

The Man and the Myth – Robert Smith-Barry as ‘The Man Who Taught the World to Fly’

Air and Space Power Review
Today, the Smith-Barry Academy is a training facility within the Central Flying School of the Royal Air Force (RAF). Based in the Trenchard Building at RAF Cranwell, the academy is responsible for researching new training methodologies.
David Spruce
doaj  

Using Airborne Laser Scanning and Sentinel‐2 to Understand Subcanopy Light Regimes and Understory Diversity of Vascular Plants in Temperate Mountain Forests

Remote Sensing in Ecology and Conservation, EarlyView.
This study demonstrates that not just Airborne Laser Scanning, but also Sentinel‐2 can effectively estimate absolute canopy cover and canopy cover heterogeneity ‐ structural metrics that determine the subcanopy light regime, found to be linked to the vascular plant species richness in the understory of temperate mountain forests.
Felix Wieland‐Glasmann, Cornelius Senf, Kristin H. Braziunas, Rupert Seidl, Peter Annighöfer   +4 more
wiley   +1 more source

Synthetic Imagery Improves Ecological Classification When Real Data Are Scarce, Not Direct Substitutes

Remote Sensing in Ecology and Conservation, EarlyView.
Image generation models can create synthetic ecological datasets and potentially alleviate limitations from sparse real data. Using 20 tree genera across community‐science and street‐view imagery, we tested whether synthetic images could replace or supplement real data for image classification.
Thomas A. Lake, Brennen T. Farrell, Ross K. Meentemeyer, Chris M. Jones   +3 more
wiley   +1 more source

Outcomes after delivery room positive pressure ventilation in late preterm and term infants

Resuscitation Plus
Objectives: Characterize short-term outcomes of late preterm and term infants who received positive pressure ventilation in the delivery room and compare these with infants who did not receive resuscitation at birth.
Maureen Peers de Nieuwburgh, Charlotte Cecarelli, Danielle Weinberg, Kesi C. Yang, Heidi M. Herrick, Elizabeth E. Foglia   +5 more
doaj   +1 more source

Monitoring GPS‐collared moose by ground versus drone approaches: efficiency and disturbance effects

Wildlife Biology, EarlyView.
Efficient wildlife management requires precise monitoring methods, for example to estimate population density, reproductive success, and survival. Here, we compared the efficiency of drone (equipped with a RGB camera) and ground approaches to detect and observe GPS‐collared female moose Alces alces and their calves. We also quantified how drone (n = 42)
Martin Mayer, Erlend Furuhovde, Kristoffer Nordli, Giorgia Myriam Ausilio, Petter Wabakken, Ane Eriksen, Alina L. Evans, Karen Marie Mathisen, Barbara Zimmermann   +8 more
wiley   +1 more source

Pharmacological Advancements of PRC2 in Cancer Therapy: A Narrative Review

Life
Polycomb repressive complex 2 (PRC2) is known to regulate gene expression and chromatin structure as it methylates H3K27, resulting in gene silencing.
Michael S. Wang, Jonathan Sussman, Jessica A. Xu, Reema Patel, Omar Elghawy, Prashanth Rawla   +5 more
doaj   +1 more source

Pine Tree and Rocks, [Sketch 1]

, 1940
Pencil on cardstock. Bare tree and pine tree in foreground with stone wall to the left. One of four pencil sketches Everett Spruce created at John William Rogers’ request.
Spruce, Everett F. (Everett Franklin), 1908-2002
core  

A comparison of thermal drones and camera trap population estimates for Sitka black‐tailed deer in Alaska

Wildlife Biology, EarlyView.
One of the most difficult challenges for wildlife managers is reliably estimating wildlife populations. Camera traps combined with spatial capture–recapture (SCR) models are a popular tool for population estimation. They have limitations, however, including long data processing times.
Shannon P. Finnegan, Amael Hinojo, Sarah Monod, William A. Wall, Peter Olsen, Maximilian L. Allen   +5 more
wiley   +1 more source