Results 71 to 80 of about 3,327,176 (216)

Tertiary-Treated Municipal Wastewater is a Significant Point Source of Antibiotic Resistance Genes Into Duluth-Superior Harbor [PDF]

open access: yes, 2011
In this study, the impact of tertiary-treated municipal wastewater on the quantity of several antibiotic resistance determinants in Duluth-Superior Harbor was investigated by collecting surface water and sediment samples from 13 locations in Duluth ...
Allen H. K.   +49 more
core   +3 more sources

Effects of Composition on Melt Fillability and Impact Resistance of TiAl Alloys for Thin-Blade Turbine Wheels: Laboratory Predictions and Product Verification

open access: yesMetals
Scaling up the production of TiAl turbine wheels for passenger car turbochargers requires the fabrication of thin blades that are similar to those of nickel-based superalloys.
Toshimitsu Tetsui   +3 more
doaj   +1 more source

High strength nickel base alloy, WAZ-16, for applications up to 2200 F [PDF]

open access: yes, 1974
Alloy product is high strength, high temperature nickel base material with higher incipient melting temperature than all known nickel base alloys. It is microstructurally stable and has high impact resistance both before and after prolonged thermal ...
Freche, J. C., Waters, W. J.
core   +1 more source

Technological characterization of vaginal probiotic lactobacilli: resistance to osmotic stress and strains compatibility [PDF]

open access: yes, 2019
Aims: The aim was to evaluate the osmotic stress resistance of vaginal beneficial probiotic strains, their growth kinetics and parameters when growing in salt-added culture media, and their compatibility to go further in the design of a probiotic formula
Birgitt, Wiese   +3 more
core   +1 more source

Improved impact-resistant boron-aluminum composites for use as turbine engine fan blades [PDF]

open access: yes
Efforts to improve the impact resistance of B/Al are reviewed and analyzed. Thin sheet Charpy and Izod impact tests and standard full size Charpy impact tests were conducted on unidirectional and angleply composites containing 4, 5.6 and 8 mil boron in ...
Mcdanels, D. L., Signorelli, R. A.
core   +1 more source

Impact-resistant nacre-like transparent materials

open access: yesScience, 2019
Nacre-inspired toughened glass Nacre is a biological composite that is present in seashells. This composite contains a small amount of organic material that toughens brittle ceramics, such that a highly regular three-dimensional brick-and-mortar assembly of microscopic mineral tablets is bonded together with biopolymers ...
Z. Yin, F. Hannard, F. Barthelat
openaire   +3 more sources

Effect of waste tire products on some characteristics of roller-compacted concrete

open access: yesOpen Engineering
Roller-compacted concrete pavement (RCCP) is one of the most durable, economical, and practical solutions for the construction of roads for various heavy-duty purposes. To make RCCP more sustainable, different waste materials have been utilized.
Abed Ziyad Majeed   +2 more
doaj   +1 more source

Bighorn sheep horn-based metamaterial lattice structures for targeted energy absorption applications

open access: yesVirtual and Physical Prototyping
A novel approach to developing architected metamaterial unit cells has been introduced in the study, drawing inspiration from the structural attributes of bighorn sheep horns.
Sandeep Suresh Babu   +4 more
doaj   +1 more source

Effect of fiber diameter and matrix alloys on impact-resistant boron/aluminum composites [PDF]

open access: yes
Efforts to improve the impact resistance of B/Al are reviewed and analyzed. Nonstandard thin-sheet charpy and Izod impact tests and standard full-size Charpy impact tests were conducted on composites containing unidirectional 0.10mm, 0.14mm, and 0.20mm ...
Mcdanels, D. L., Signorelli, R. A.
core   +1 more source

High velocity impact resistance of fibre metal laminates [PDF]

open access: yes, 2017
The high velocity impact resistance of fibre metal laminates (FMLs) based on combinations of three different aluminium alloys (6161-O, 6061-T6, 7075-T6) and a glass fibre reinforced epoxy resin have been investigated both experimentally and numerically.
Cantwell, W   +5 more
core   +2 more sources

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