Results 131 to 140 of about 106,612 (245)

Influence of Surface Roughness and Temperature on Niobium Cathodic Cage Duplex Treatment Applied to VP20TS Steel

open access: yessteel research international, EarlyView.
Niobium cathodic cage duplex treatment is applied to VP20TS steel to evaluate the influence of surface roughness and temperature on coating performance. Results show that higher temperatures promote thicker nitride layers and increased microhardness, while finer surface preparation enhances adhesion and wear resistance, revealing optimal conditions for
Alan Bruno Costa Cardoso   +6 more
wiley   +1 more source

Map of the district of Maranoa and portion of Warrego and Leichhardt [cartographic material] /

open access: yes, 1886
Map of the district of Maranoa and portion of Warrego and Leichhardt showing district and county boundaries, main roads, telegraph lines and railways. Relief shown by hachures.; Plate 13 from Vol. 3 (QLD) : The new atlas of Australia. Sydney: J.
John Sands (Firm)
core  

Characteristics of foundry moulding sands

open access: yes, 1950
The purpose of this report is to demonstrate how the properties might be controlled by means of simple testing to reveal the full properties of foundry sand. Moulding sands possess qualities which retain their forms when molten is poured into them. Their
Nijhawan, B R, Khanna, M N
core   +1 more source

Foamed Concrete Sealing Materials for Coal Seam Gas Drainage Boreholes: A Review

open access: yesSafety Science and Technology, EarlyView.
This study investigates the sealing performance of foamed concrete in gas drainage boreholes. By comparing leakage pathways (a, c) with sealed systems (b, d), the research demonstrates how foamed concrete effectively fills mining‐induced fractures and resists deformation.
Jiaxing Zou   +6 more
wiley   +1 more source

Experimental Compaction of a High-Silica Sand in Quasi-Static Conditions. [PDF]

open access: yesMaterials (Basel), 2022
Szwajka K, Szewczyk M, Trzepieciński T.
europepmc   +1 more source

The Analysis of Moulding Sands’ Knock-Out Properties Measurement Methods [PDF]

open access: yes, 2014
Potrzeba uzyskiwania wysokiej jakości odlewów wymusza podejmowanie prac badawczych dla otrzymania mas formierskich i rdzeniowych zapewniających uzyskanie tworzyw o odpowiednich parametrach technologicznych, jednocześnie spełniających wysokie wymogi ...
Major-Gabryś, K.   +2 more
core  

Influence of mix design method on the shear capacity of reinforced concrete beams made with high‐quality recycled coarse aggregate

open access: yesStructural Concrete, EarlyView.
Abstract This study investigates the shear capacity behavior of reinforced concrete (RC) beams without stirrups incorporating recycled coarse aggregate (RCA). An extensive database comprising 269 experimental data points from 40 journal articles published between 2001 and 2025 was compiled, excluding specimens with recycled fine aggregate or fiber ...
Sungchul Yang
wiley   +1 more source

The world [cartographic material] /

open access: yes, 1886
World map of double hemispheres. Relief shown by hachures.; In upper margin: Comparative view of the principal rivers.; In lower margin: Comparative view of the principal mountains.; Oriented with north to the right.; Plate 1 from Vol.
John Sands (Firm)
core  

Influence of natural fibers on physical, mechanical, and fire‐resistant properties of microconcrete

open access: yesStructural Concrete, EarlyView.
Abstract This study examined the influence of natural fibers on the physical, mechanical, and fire‐resistant properties of microconcrete, in comparison with conventional polypropylene fibers used in cement composites. The fibers were characterized by FTIR and TGA/DSC to assess their composition and thermal stability, and FTIR was also performed after ...
Ivanka Netinger Grubeša   +5 more
wiley   +1 more source

Behavior of manufactured sand and recycled coarse aggregate concrete‐filled steel tubular stub columns with circular section

open access: yesStructural Concrete, EarlyView.
Abstract Accelerated urbanization has intensified environmental concerns due to excessive natural resource consumption and construction waste generation. Circular concrete‐filled steel tube (CFST) columns incorporating manufactured sand recycled coarse aggregate (MS‐RCA) concrete have emerged as an innovative composite element offering notable ...
Minsheng Guan   +7 more
wiley   +1 more source

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