Results 111 to 120 of about 23,539,549 (319)

Artificial molecular machines and motors—Design and control of nanoscale motion

open access: yesFEBS Letters, EarlyView.
Molecules are constantly moving because of thermal fluctuations, but random motion alone cannot be exploited to perform directional tasks. Artificial molecular machines use chemical, electrical, or light energy to bias this motion. Molecular shuttles, rotary motors, and supramolecular pumps illustrate how nanoscale movement can be controlled and ...
Leonardo Andreoni, Alberto Credi
wiley   +1 more source

A review of the genus Stephanorhynchus White, 1846 (Coleoptera: Curculionidae: Eugnomini), with a description of three new genera and one new species from New Zealand

open access: yesThe European Zoological Journal
Stephanorhynchus White, 1846 is a eugnomine weevil genus endemic to New Zealand, with 18 nominal taxa described within the genus. Examination of the type specimens of these taxa with greater understanding of related genera has led to the distinction of ...
M. A. Mazur, S. D. J. Brown
doaj   +1 more source

A NEW SPECIES OF ASTEROSCOPUS [PDF]

open access: yesThe Canadian Entomologist, 1899
Lederer characterizes Asteroscopus essentially as follows: Narrow-winged owlets, resembling Bombycids in the shaggy, loose vestiture. Palpi short, not exceeding the front, drooping. Tongue short and weak. Eyes naked, with bristly lashes. Antennæ comparatively long, with a tuft of hair at the base; in the male with short pectinations to the tip; in the ...
openaire   +2 more sources

Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment

open access: yesMolecular Oncology, EarlyView.
This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
wiley   +1 more source

Characterization of Iberian species of the genus Pungentus Thorne & Swanger, 1936 (Nematoda, Dorylaimida, Nordiidae) [PDF]

open access: yes, 2013
Several populations of four known species of the genus Pungentus (P. clavatus, P. engadinensis, P. marietani and P. silvestris), collected in the wild and in cultivated soils from the Iberian Peninsula, are studied.
Ciobanu, Marcel   +6 more
core   +1 more source

Boundary spanning increases knowledge and action on invasive species in a changing climate

open access: yesEcological Solutions and Evidence
Challenges associated with global change stressors on ecosystems have prompted calls to improve actionable science, including through boundary‐spanning activities, which aim to build connections and communication between researchers and natural resource ...
Annette E. Evans   +6 more
doaj   +1 more source

On the Neotropical species of the spider genus Tekellina Levi, 1957 (Arachnida: Araneae: Synotaxidae)

open access: yesEuropean Journal of Taxonomy
The genus Tekellina Levi, 1957 is currently composed of ten species, six of which are Neotropical. They are small-sized spiders (0.9 to 1.5 mm), with a wide distribution, with a great diversity in the Neotropical Region and well represented in Brazil ...
Narelle Estol   +3 more
doaj   +1 more source

Summer and winter habitat suitability of Marco Polo argali in southeastern Tajikistan: A modeling approach

open access: yesHeliyon, 2017
We modeled summer and winter habitat suitability of Marco Polo argali in the Pamir Mountains in southeastern Tajikistan using these statistical algorithms: Generalized Linear Model, Random Forest, Boosted Regression Tree, Maxent, and Multivariate ...
Eric Ariel L. Salas   +2 more
doaj   +1 more source

NEW SPECIES OF PERLIDÆ

open access: yesThe Canadian Entomologist, 1906
In looking over my collection, preparatory to a rearrangement of them forms, I find several new species, that I desscribe below. One of them represents an interesting new genus, allied to Nemoura. I have added illustrations of the gential structures, as these are of considerable value in the determination of the species.
openaire   +4 more sources

A NEW SPECIES OF ARCTIA [PDF]

open access: yesThe Canadian Entomologist, 1879
Arctia rectilinea, n. sp.Average length, ♂, .50; ♀, .55 of an inch. Expanse of wings, ♂, 1.30; ♀, 1.50 inches. Head reddish flesh color, or in some lighter; eyes and palpi black ; antennæ dark brown or brown black.
openaire   +1 more source

Home - About - Disclaimer - Privacy