Results 61 to 70 of about 40,338 (304)

Toward Super‐Resolution Reconstruction of Diffusion–Relaxation MRI Using Slice Excitation With Random Overlap (SERO)

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose Diffusion MRI probes tissue microstructure, but low SNR and limited resolution hinder detection of features and parameter estimates. We introduce slice excitation with random overlap (SERO), which enables variable repetition times (TRs) and diffusion weighting within a single shot.
Felix Mortensen, Jakub Jurek, Jens Sjölund, Geraline Vis, Ronnie Wirestam, Malwina Molendowska, Andrzej Materka, Filip Szczepankiewicz   +7 more
wiley   +1 more source

Nest Characteristics and Prey Selection of Sceliphron destillatorium (Apoidea, Sphecidae) on the Territory of the Rivnenskyi Nature Reserve

Zoodiversity
The nesting behaviour and prey selection of Sceliphron destillatorium remains poorly studied in Ukraine. In the present study we analysed a total of 59 nests of S. destillatorium. The main morphometric parameters of S.
S. Pytel-Huta, V. Yanul, M. Franchuk, A. Zatushevsky, J. Tsaryk   +4 more
doaj   +1 more source

Evidence for Widespread Associations between Neotropical Hymenopteran Insects and Actinobacteria

Frontiers in Microbiology, 2017
The evolutionary success of hymenopteran insects has been associated with complex physiological and behavioral defense mechanisms against pathogens and parasites.
Bernal Matarrita-Carranza, Bernal Matarrita-Carranza, Rolando D. Moreira-Soto, Rolando D. Moreira-Soto, Catalina Murillo-Cruz, Marielos Mora, Cameron R. Currie, Adrián A. Pinto-Tomas, Adrián A. Pinto-Tomas, Adrián A. Pinto-Tomas   +9 more
doaj   +1 more source

Free‐Breathing Magnetization Transfer Imaging of the Lung at 0.55 T Using bSTAR

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To develop a clinically applicable method for magnetization transfer (MT) imaging of the lung at 0.55 T. Methods MT imaging of the chest was explored in healthy volunteers at 0.55 T using a self‐gated 3D half‐radial dual‐echo balanced steady‐state free precession sequence (bSTAR), a 2D multi‐slice gradient echo method (GRE) acquired in
Alexandra Braun, Grzegorz Bauman, Maurice Pradella, Jonathan Röcken, Katrin E. Hostettler, Oliver Bieri   +5 more
wiley   +1 more source

Asphalted parking lots are environmental filters for multiple propagule dispersal and pollination strategies

Nordic Journal of Botany, EarlyView.
Understanding community assembly for wild species in anthropogenic settings has become increasingly important as biodiversity and ecosystem services are threatened by development pressures. Urban hardscape habitats such as parking lots are widespread, extreme, terrestrial anthropogenic environments that influence plant community assembly by way of ...
Lauren J. Frazee, Myla F. J. Aronson, Jens Kattge, Lena Struwe   +3 more
wiley   +1 more source

Pain and Lethality Induced by Insect Stings: An Exploratory and Correlational Study

Toxins, 2019
Pain is a natural bioassay for detecting and quantifying biological activities of venoms. The painfulness of stings delivered by ants, wasps, and bees can be easily measured in the field or lab using the stinging insect pain scale that rates the pain ...
Justin O. Schmidt
doaj   +1 more source

Variation in pollen limitation among reproductive modules points to likely resource reallocation in the alpine plant Veratrum grandiflorum

Nordic Journal of Botany, EarlyView.
Pollen limitation, a decrease in seed production due to insufficient pollen receipt, may influence plant demography and the evolution of sexual systems. Its empirical estimation of pollen supplementation of some of the flowers on an individual is well known to be prone to overestimation due to potential resource reallocation among the individual's ...
Xia Jiang, Kai‐Hsiu Chen, Shengman Lyu, Ling Liu, Meixian Yu, John R. Pannell, Guoxing Cao   +6 more
wiley   +1 more source

A solitary mud-daubing wasp, Brachymenes dysmenes (Hymenoptera: Vespidae) fron Brazil with evidence of a life-cycle polyphenism

Revista de Biología Tropical, 1999
Nests (n=60) of a solitary mud-daubing wasp, Brachymenes dyscherus were collected at Fazenda Santa Carlota, Cajuru, São Paulo, Brazil in 1995 and 1996.
Evandro Camillo
doaj  

Diversity and pollination value of insects visiting the flowers of a rare buckwheat (Eriogonum pelinophilum: Polygonaceae) in disturbed and "natural" areas

Journal of Pollination Ecology, 2011
We compared flower-visitors of the endangered plant Eriogonum pelinophilum, at relatively undisturbed and highly disturbed sites. We found no difference between sites in flower visitation rate or species richness of flower-visitors; species diversity of ...
V. J. Tepedino, W. R. Bowlin, T. L. Griswold   +2 more
doaj   +1 more source

“Tremble, pests”: Insect natural enemy‐induced changes in pests before attack and their implications for biological control

New Plant Protection, EarlyView.
Abstract Insect natural enemies, encompassing predators and parasitoids, serve as vital regulators of pest populations and architects of ecosystem balance. Most studies on natural enemies have focused on understanding the mechanisms by which these insects eliminate pests after an attack.
Yaoyao Chen, Muyi Chen, Mengbo Guo, Xinhai Ye   +3 more
wiley   +1 more source