Results 11 to 20 of about 1,739,210 (295)

Dimensional stability [PDF]

open access: yes
The temporal stability of glass and glass-ceramic materials is important to the success of a large diffraction-limited telescope. The results are presented of an experimental study of the dimensional stability of glasses and glass ceramics being ...
Hocken, R., Justie, B.
core   +4 more sources

Comparison of Dimensional Accuracy of Acrylic Resin Denture Base using Conventional and RS Tension Methods of Packing- An In-vitro Study [PDF]

open access: yesJournal of Clinical and Diagnostic Research, 2021
Introduction: Retention and stability are some of the important aspects of a successful denture. Laboratory procedures such as methods of packing have a great influence on the outcome of the denture.
Rajeev Srivastava   +5 more
doaj   +1 more source

Evaluation of dimensional stability, compressive resistance, and detail reproduction of thermoplastic resin (BDIMPRESS), elastomeric and composite bite registration material: An in vitro study

open access: yesThe Journal of Indian Prosthodontic Society, 2023
Aim: The fabrication of an accurate prosthesis depends mainly on precise recording of the maxillo—mandibular relationship of the patient and transferring it to the articulator.
Sai Kiran Koppolu   +3 more
doaj   +1 more source

The Investigation on Dimensional Stability in Some Sintered Powder Metallurgy Alloys

open access: yesThe Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science, 2022
The subject of this research was to study the effect of sintering time on the dimensional characteristics of some powder metallurgy (PM) materials. The powders used in this study are prealloyed iron-based powders with Cu, Ni and Mo.
Mihaela MARIN, Florin-Bogdan MARIN
doaj   +1 more source

Influence of thermal pretreatments on dimensional change and humidity sensitivity of densified spruce and poplar wood

open access: yesMaderas: Ciencia y Tecnología, 2023
The effect of thermal pretreatments on the dimensional change and humidity sensitivity of densified spruce (Picea orientalis) and poplar (Populus nigra) wood were investigated.
Huseyin Pelit, Ramazan Yorulmaz
doaj   +1 more source

Branched Sulfonimide-Based Proton Exchange Polymer Membranes from Poly(Phenylenebenzopheneone)s for Fuel Cell Applications

open access: yesMembranes, 2021
Improved proton conductivity and high durability are now a high concern for proton exchange membranes (PEMs). Therefore, highly proton conductive PEMs have been synthesized from branched sulfonimide-based poly(phenylenebenzophenone) (SI-branched PPBP ...
Sabuj Chandra Sutradhar   +6 more
doaj   +1 more source

Electric Field-Assisted Filling of Sulfonated Polymers in ePTFE Backing Material for Fuel Cell

open access: yesMembranes, 2022
This study fabricated a composite ePTFE-backed proton-exchange membrane by filling the pores on the ePTFE backing with sulfonated polyarylene ethers through an externally supplied electric field. The morphology changes were observed under an SEM.
Tung-Li Hsieh   +4 more
doaj   +1 more source

Effect of Adhesive Spreading Rate on the Performance of Laminated Compressed Oil Palm Trunks

open access: yesBioResources, 2015
The large availability and cheap price of oil palm (Elaeis guineensis) trunk makes it an attractive raw material for value-added applications, but its low density and high carbohydrate content are highly undesirable.
Noor Afeefah Nordin   +6 more
doaj   +1 more source

Impregnação com resina natural na Figueira Branca como forma alternativa de impermeabilização Impregnation with natural resin in the 'Figueira Branca' as alternative form of impermeabilization

open access: yesRevista Brasileira de Engenharia Agrícola e Ambiental, 2002
Investigou-se, neste trabalho, a capacidade de impregnação da Figueira Branca (Ficus monckii) com a resina natural da árvore de Jatobá (Hymenaea courbaril); trata-se de uma espécie de madeira de baixa densidade, originária do Estado do Mato Grosso ...
José de S. Nogueira   +3 more
doaj   +1 more source

Ability to Glue Portuguese Eucalyptus Elements

open access: yesBuildings, 2020
Portuguese forests have changed in recent years. These changes were mainly boosted by the wildfires that affected a significant percentage of the softwood area. Eucalyptus is actually the dominant wood species in Portuguese forests.
Aiuba Suleimana   +3 more
doaj   +1 more source

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