Results 21 to 30 of about 286,506 (300)

Un carrefour de voies anciennes majeures sur le plateau de la Ségourie au Fief-Sauvin (Maine-et-Loire). Le dossier aérien de ses occupations protohistoriques et antiques

Archéopages, 2021
Before the development of fieldwork, aerial archaeology played a decisive role in the recognition of major La Tène and ancient sites and sections of routes or paths, the most important of which can sometimes be followed over very long distances.
Gilles Leroux, Elven Le Goff
doaj   +1 more source

Mapping out bare-nosed wombat (Vombatus ursinus) burrows with the use of a drone

BMC Ecology, 2019
Background Wombats are large, nocturnal herbivores that build burrows in a variety of habitats, including grassland communities, and can come into conflict with people.
Julie M. Old, Simon H. Lin, Michael J. M. Franklin   +2 more
doaj   +1 more source

Recent Harp and Hooded Seal Pup Production Estimates in the Greenland Sea Suggest Ecology-Driven Declines

NAMMCO Scientific Publications, 2022
Pup production of the Greenland Sea populations of harp (Pagophilus groenlandicus) and hooded (Cystophora cristata) seals were estimated based upon aerial surveys in March 2018.
Martin Biuw, Tor Arne Øigård, Kjell Tormod Nilssen, Garry Stenson, Lotta Lindblom, Michael Poltermann, Martin Kristiansen, Tore Haug   +7 more
doaj   +1 more source

An automatic spectral stabilization based on adaptive derivative Gaussian peaking algorithm

He jishu
BackgroundAviation γ spectrometer, measuring at high-altitude with low background counting rate, is prone to spectral line drift caused by factors such as long stable spectral periods and significant temperature effects due to its low background counting
WU Leichao, LI Jiangkun, ZHANG Guangya, WU Xue, LI Yizhou   +4 more
doaj   +1 more source

Study on wavelet denoising effect of transient electromagnetic method based on optimal threshold reference

Meikuang Anquan
The field data acquisition of transient electromagnetic method is prone to jump due to various random disturbances. Wavelet denoising realizes data denoising by multi-scale decomposition, threshold setting and reconstruction of signal.
Yi DONG, Chuang YANG
doaj   +1 more source

Ground-truthed and high-resolution drone images of the leafy spurge weed plant (Euphorbia esula)

Scientific Data
This dataset comprises 1.3 cm resolution aerial images of grasslands in western Montana, USA, captured by a commercial drone. Many scenes contain leafy spurge (Euphorbia esula), introduced to North America, now widespread in rangeland ecosystems, which ...
Kyle Doherty, Max Gurinas, Erik Samsoe, Charles Casper, Beau Larkin, Philip Ramsey, Brandon Trabucco, Ruslan Salakhutdinov   +7 more
doaj   +1 more source

Utility of Computed Tomography Surveillance of Asymptomatic Infection in Children and Young Adults Before Allogeneic Hematopoietic Stem Cell Transplant

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Asymptomatic infection poses a significant risk for children undergoing hematopoietic stem cell transplantation (HSCT). Pre‐transplant surveillance computed tomography (CT) is commonly used to identify occult infection, though its diagnostic yield remains uncertain.
Tyler Obermark, Pradipta Debnath, Rama S. Ayyala, Lara A. Danziger‐Isakov, Jane Koo, Kasiani C. Myers, William R. Otto, Aki Tanimoto, Andrew T. Trout, Cara E. Morin   +9 more
wiley   +1 more source

Drivers of Bornean Orangutan Distribution across a Multiple-Use Tropical Landscape

Remote Sensing, 2021
Logging and conversion of tropical forests in Southeast Asia have resulted in the expansion of landscapes containing a mosaic of habitats that may vary in their ability to sustain local biodiversity.
Sol Milne, Julien G. A. Martin, Glen Reynolds, Charles S. Vairappan, Eleanor M. Slade, Jedediah F. Brodie, Serge A. Wich, Nicola Williamson, David F. R. P. Burslem   +8 more
doaj   +1 more source

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

FEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

Spatiotemporal and quantitative analyses of phosphoinositides – fluorescent probe—and mass spectrometry‐based approaches

FEBS Letters, EarlyView.
Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho, Shin Morioka, Junko Sasaki, Takehiko Sasaki   +3 more
wiley   +1 more source