Results 1 to 10 of about 30,003 (233)

Flowering seasonality drives taxonomic, functional, and phylogenetic diversity of hummingbirds along an altitudinal gradient in northwestern Mexico. [PDF]

PLoS ONE
Floral resources in the mountains of northwestern Mexico are strongly seasonal. This influences latitudinal, local, and altitudinal migration patterns in hummingbird species, resulting in temporal changes in hummingbird community structure over the ...
Gabriel López-Segoviano, Laura E Nuñez-Rosas, Maribel Arenas-Navarro, Guillermo Huerta-Ramos, María Del Coro Arizmendi   +4 more
doaj   +2 more sources

Implications of dominance hierarchy on hummingbird-plant interactions in a temperate forest in Northwestern Mexico [PDF]

PeerJ, 2023
The structuring of plant-hummingbird networks can be explained by multiple factors, including species abundance (i.e., the neutrality hypothesis), matching of bill and flower morphology, phenological overlap, phylogenetic constraints, and feeding ...
Gabriel López-Segoviano, Maribel Arenas-Navarro, Laura E. Nuñez-Rosas, María del Coro Arizmendi   +3 more
doaj   +2 more sources

A DEEP LEARNING ARCHITECTURE FOR BATCH-MODE FULLY AUTOMATED FIELD BOUNDARY DETECTION [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020
The accurate split of large areas of land into discrete fields is a crucial step for several agriculture-related remote sensing pipelines. This work aims to fully automate this tedious and resource-demanding process using a state-of-the-art deep learning
L. Meyer, F. Lemarchand, P. Sidiropoulos, P. Sidiropoulos   +3 more
doaj   +1 more source

The return of the hummingbird [PDF]

Journal of Chemical Education, 1973
W. R. Denan, J. T. McCown, L. P. Beaulieu, D. E. Booth   +3 more
openaire   +3 more sources

Hummingbird vision [PDF]

Current Biology, 2020
Hummingbirds are widely recognized by their hovering flight. In this Quick guide, Altshuler and Wylie describe the visual specializations that allow for the hummingbird's flight abilities.
Douglas L, Altshuler, Douglas R, Wylie
openaire   +2 more sources

Rationally targeted anti-VISTA antibody that blockades the C-C’ loop region can reverse VISTA immune suppression and remodel the immune microenvironment to potently inhibit tumor growth in an Fc independent manner

Journal for ImmunoTherapy of Cancer, 2022
Background Despite significant progress in cancer immunotherapy in recent years, resistance to existing immune checkpoint therapies (ICT) is common. V-domain Ig suppressor of T cell activation (VISTA), a predominantly myeloid immune checkpoint regulator,
Dipti Thakkar, Lillian Liu, Bhushan Dharmadhikari, Shalini Paliwal, Siyu Guan, Shreya Kar, Nikhil K Tulsian, Joshua J Gruber, Leah DiMascio, Konrad H Paszkiewicz, Piers J Ingram, Jerome D Boyd-Kirkup   +11 more
doaj   +1 more source

Brief Report: A Blood-Based MicroRNA Complementary Diagnostic Predicts Immunotherapy Efficacy in Advanced-Stage NSCLC With High Programmed Death-Ligand 1 Expression

JTO Clinical and Research Reports, 2022
Introduction: Patients with advanced, non-oncogene-driven NSCLC with high programmed death-ligand 1 (PD-L1) expression are eligible for treatment with immunotherapy.
Timothy Rajakumar, MD, PhD, Rastislav Horos, PhD, Paul Kittner, BSc, Mustafa Kahraman, PhD, Tobias Sikosek, PhD, Franziska Hinkfoth, MSc, Kaja Tikk, PhD, Nathaniel D. Mercaldo, PhD, Albrecht Stenzinger, MD, Klaus F. Rabe, MD, PhD, Martin Reck, MD, Michael Thomas, MD, Petros Christopoulos, MD, PhD, Bruno R. Steinkraus, PhD   +13 more
doaj   +1 more source

A blood-based miRNA signature with prognostic value for overall survival in advanced stage non-small cell lung cancer treated with immunotherapy

npj Precision Oncology, 2022
Immunotherapies have recently gained traction as highly effective therapies in a subset of late-stage cancers. Unfortunately, only a minority of patients experience the remarkable benefits of immunotherapies, whilst others fail to respond or even come to
Timothy Rajakumar, Rastislav Horos, Julia Jehn, Judith Schenz, Thomas Muley, Oana Pelea, Sarah Hofmann, Paul Kittner, Mustafa Kahraman, Marco Heuvelman, Tobias Sikosek, Jennifer Feufel, Jasmin Skottke, Dennis Nötzel, Franziska Hinkfoth, Kaja Tikk, Alberto Daniel-Moreno, Jessika Ceiler, Nathaniel Mercaldo, Florian Uhle, Sandra Uhle, Markus A. Weigand, Mariam Elshiaty, Fabienne Lusky, Hannah Schindler, Quentin Ferry, Tatjana Sauka-Spengler, Qianxin Wu, Klaus F. Rabe, Martin Reck, Michael Thomas, Petros Christopoulos, Bruno R. Steinkraus   +32 more
doaj   +1 more source

Hummingbird flight [PDF]

Current Biology, 2012
Hummingbirds are very distinctive in their form and behavior, the evolution of which is tightly connected to the evolution of their primary source of energy - floral nectar. About forty million years ago, the practical use of this dense fuel, available only in widely-dispersed, insect-sized aliquots - it was originally intended for insect pollinators -
Warrick, Douglas, Hedrick, Tyson, Fernández, María José, Tobalske, Bret, Biewener, Andrew   +4 more
openaire   +3 more sources

Hummingbird-plant interactions in Chile: An ecological review of the available evidence

Avian Research, 2022
Hummingbird species have closely evolved with the plants they feed on, which is confirmed by their often tight ecological relationships in natural settings. Hummingbird-plant interactions are of interest for research areas such as ecology, evolution, and
Rodrigo Medel, Manuel López-Aliste, Francisco E. Fontúrbel   +2 more
doaj   +1 more source