Results 51 to 60 of about 51,507 (363)

A missing outskirts problem? Comparisons between stellar halos in the Dragonfly Nearby Galaxies Survey and the TNG100 simulation

open access: yes, 2020
Low surface brightness galactic stellar halos provide a challenging but promising path towards unraveling the past assembly histories of individual galaxies.
Hernquist, Lars   +6 more
core   +1 more source

The M101 group complex: new dwarf galaxy candidates and spatial structure [PDF]

open access: yes, 2017
The fine details of the large-scale structure in the local universe provide important empirical benchmarks for testing cosmological models of structure formation. Dwarf galaxies are key object for such studies.
Binggeli, Bruno   +3 more
core   +2 more sources

Mechanically Tunable Bone Scaffolds: In Vivo Hardening of 3D‐Printed Calcium Phosphate/Polycaprolactone Inks

open access: yesAdvanced Functional Materials, EarlyView.
A 3D bone scaffold with osteogenic properties and capable of hardening in vivo is developed. The scaffold is implanted in a ductile state, and a phase transformation of the ceramic induces the stiffening and strengthening of the scaffold in vivo. Abstract Calcium phosphate 3D printing has revolutionized customized bone grafting.
Miguel Mateu‐Sanz   +7 more
wiley   +1 more source

Mechanical Properties of Architected Polymer Lattice Materials: A Comparative Study of Additive Manufacturing and CAD Using FEM and µ‐CT

open access: yesAdvanced Functional Materials, EarlyView.
This study examines how pore shape and manufacturing‐induced deviations affect the mechanical properties of 3D‐printed lattice materials with constant porosity. Combining µ‐CT analysis, FEM, and compression testing, the authors show that structural imperfections reduce stiffness and strength, while bulk material inhomogeneities probably enhance ...
Oliver Walker   +5 more
wiley   +1 more source

SPECIES DIVERSITY OF DRAGONFLY (ARTHROPODA: ODONATA) AND ITS RELATIONSHIP WITH AIR PARAMETERS AT SG. MUAR, KUALA PILAH

open access: yesJournal of Academia, 2021
The study of diversity and distribution of dragonfly, and their relationship with air parameters including temperature (°C) and humidity (%) at Sungai Muar, Kuala Pilah, Negeri Sembilan was carried out on 14 and 15 March 2020.
Nur Hasyimah Ramli   +1 more
doaj  

Latitudinal variation in morphology in two sympatric damselfly species with contrasting range dynamics (Odonata: Coenagrionidae)

open access: yesEuropean Journal of Entomology, 2008
Geographic range expansion is one of the best documented macroecological consequences of climate change. A concomitant change in morphology has been demonstrated in some species. The relationship between latitudinal variation in morphology (e.g. Bergmann'
Christopher HASSALL   +2 more
doaj   +1 more source

First results from the Dragonfly Telephoto Array: the apparent lack of a stellar halo in the massive spiral galaxy M101

open access: yes, 2014
We use a new telescope concept, the Dragonfly Telephoto Array, to study the low surface brightness outskirts of the spiral galaxy M101. The radial surface brightness profile is measured down to mu_g ~ 32 mag/arcsec^2, a depth that approaches the ...
Abraham, Roberto   +2 more
core   +1 more source

Measuring and Understanding Throughput of Network Topologies [PDF]

open access: yes, 2016
High throughput is of particular interest in data center and HPC networks. Although myriad network topologies have been proposed, a broad head-to-head comparison across topologies and across traffic patterns is absent, and the right way to compare worst ...
Godfrey, P. Brighten   +3 more
core   +1 more source

A Termite‐Inspired Alternative to Cement

open access: yesAdvanced Functional Materials, EarlyView.
A termite‐inspired composite of clay, cellulose, and lignin forms a dense fibrous network with concrete‐like strength (32 MPa) and superior elasticity, processed at ambient temperature. Abstract Clay combined with organic materials is used by termites as a strong and durable construction material for their mounds with minimal environmental impact. Here,
Oren Regev   +3 more
wiley   +1 more source

Sustainable control of Anopheles mosquito population [PDF]

open access: yes, 2014
Despite the widespread use of insecticides, community engagement programmes and preventive measures mosquito borne diseases are growing and new tools to prevent the spread of disease are urgently needed. An alternative control measure for the eradication
Birch, Philip   +5 more
core   +1 more source

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