Results 81 to 90 of about 6,664 (220)

More is more in language learning:reconsidering the less-is-more hypothesis [PDF]

open access: yes, 2018
The Less-is-More hypothesis was proposed to explain age-of-acquisition effects in first language (L1) acquisition and second language (L2) attainment. We scrutinize different renditions of the hypothesis by examining how learning outcomes are affected by
Brooks, Patricia J., Kempe, Vera
core   +2 more sources

Phenolic resin syntactic foams [PDF]

open access: yes, 1980
Syntactic foams were prepared from blends of six phenolic resins and carbon microbubbles. The compressive strength of the phenolic resin foams is equivalent to the strength of foams made from a polyimide resin. Ammonia evolved during the cure diffuses rapidly and is not bound by the foam.
openaire   +2 more sources

Predictive Value of MHR, PLR Combined With NLRP1 for Severity and Long‐Term Prognosis in Premature Coronary Artery Disease

open access: yesImmunity, Inflammation and Disease, Volume 13, Issue 5, May 2025.
CAD patients with high severity and poor prognosis had high content of MHR, PLR, and NLRP1. The combined detection of these indicators had certain clinical value for predicting the severity and long‐term prognosis of CAD. ABSTRACT Objective To investigate the predictive value of platelet to lymphocyte ratio (PLR), monocyte to high‐density lipoprotein ...
Mengyun Zhu   +4 more
wiley   +1 more source

Tribological Properties of Aluminium Matrix Syntactic Foams Manufactured with Aluminium Smelter Waste

open access: yesApplied Sciences
Aluminium smelter waste (ASW) is a big contributor to landfills, and its recycling has been of great interest. This study investigates the tribological properties of aluminium matrix syntactic foams manufactured using an Al 6082 alloy and ASW.
Bhavik Mehta, Yuyuan Zhao
doaj   +1 more source

Design and Research of New Syntactic Foam Pressure Parts

open access: yesMATEC Web of Conferences, 2017
With the development of materials and technology, new composite materials which can meet the requirement of new technology are produced, especially in some harsh conditions where traditional materials cannot meet the needs.
Fang Xiong   +4 more
doaj   +1 more source

FISH, a new tool for in situ preservation of RNA in tissues of deep‐sea mobile fauna

open access: yesLimnology and Oceanography: Methods, Volume 23, Issue 4, Page 273-292, April 2025.
ABSTRACT Accessing the metabolic functioning of deep‐sea animals in situ remains a technological challenge as the recovery time of samples is incompatible with the short lifespan of such molecules as mRNAs. Tools able to preserve RNA in situ exist, but they are incompatible with the study of mobile fauna.
Valérie Cueff‐Gauchard   +10 more
wiley   +1 more source

Thermally-stable, syntactic pyrrone foams [PDF]

open access: yes, 1974
Foam formulations may be readily emplaced in honeycomb structures after heating to soft, doughlike consistency and forcing heated mixture into honeycomb cells.
Kimmel, B. G.
core   +1 more source

The processing and properties of syntactic Al foams containing low cost expanded glass particles [PDF]

open access: yes, 2016
Expanded glass particles (EGP) are used to manufacture Al syntactic foams using a simple vacuum casting method. Clamping of the casting in the stainless steel mold is observed when preheating the mold to >400 C, causing damage to the EGP, resulting in a ...
Altenaiji   +14 more
core   +3 more sources

Effect of surface modification on mechanical properties of hollow glass microspheres(HGM)‐filled epoxy foam composites

open access: yesSPE Polymers, Volume 6, Issue 2, April 2025.
Processing sequence of HGM‐filled foam composites. Abstract This work focuses on improving the mechanical properties of HGM‐filled foam composite panels by using polypropylene‐grafted maleic anhydride (PP‐g‐MA) to modify the surface of the HGM because of the poor interfacial bonding, which limits the structural performance of the foam composite panel ...
Ayodele Abraham Ajayi   +2 more
wiley   +1 more source

Surface Structure Analysis of Syntactic Metal Foams Machined by Milling [PDF]

open access: yes, 2017
In the automotive and aerospace industries the engineers are encouraged to develop new materials, having special features mainly for the purposes of mass reduction, favourable (specifi) mechanical properties, appropriate strength, heat resistance, and ...
Szalóki, I, Viharos, Zsolt János
core   +2 more sources

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