Results 111 to 120 of about 34,422 (242)

Compressive behaviour at High Temperatures of Fibre Reinforced Concretes

open access: yesActa Polytechnica, 2009
This paper summarizes the research that is being carried out at the Universities of Coimbra and Rio de Janeiro, on fibre reinforced concretes at high temperatures.
S. O. Santos   +3 more
doaj  

Development of high temperature materials for solid propellant rocket nozzle applications [PDF]

open access: yes
Aspects of the development and characteristics of thermal shock resistant hafnia ceramic material for use in solid propellant rocket nozzles are presented.
Lineback, L. D., Manning, C. R., Jr.
core   +1 more source

Verification of the bursting and spalling formulas in the FIB model code by finite element analyses of anchorage zones of pretensioned girders [PDF]

open access: yes, 2016
In order to predict the stress and possible crack distribution in the anchorage zones of pretensioned girders several models have been developed as can be found in the fib Model Code, the ASHTOO code or Eurocode 2.
Boel, Veerle   +3 more
core  

Assessing the reliability of saw mark features: A comparative study using stereomicroscopy, micro‐XCT, and 3D printing

open access: yesJournal of Forensic Sciences, EarlyView.
Abstract Saw mark analysis is an important component of forensic anthropology, particularly in cases of postmortem dismemberment. While stereomicroscopy remains the benchmark for evaluating kerf features, recent advances in imaging technologies offer new opportunities for documenting and interpreting bone trauma.
Pieter D. de Wet   +4 more
wiley   +1 more source

Effect of Transient Creep on the Structural Performance of Reinforced Concrete Walls under Fire

open access: yesBuildings
This paper investigates and reveals the effect of the high-temperature transient creep on the structural performance of RC walls under fire. A theoretical model is established, which explicitly includes the transient creep and accounts for the explosive ...
Jun Chen
doaj   +1 more source

Dynamic oxidation behavior at 1000 and 1100 C of four nickel-base cast alloys, NASA-TRW VIA, B-1900, 713C, and 738X [PDF]

open access: yes
The superalloys NASA-TRW VIA, B-1900, 713C, and 738X were tested cyclically and isothermally for resistance to oxidation in high velocity gas streams for 100 hours at specimen temperatures of 1000 C and 1100 C.
Sanders, W. A.
core   +1 more source

New Results From the Pre‐Pottery Neolithic Site of Al Uyaynah, Tabuk, in Northwestern Saudi Arabia

open access: yesArabian Archaeology and Epigraphy, EarlyView.
ABSTRACT Al Uyaynah is a low sandstone mound on an alluvial plain, long known for its extensive surface remains of stone‐built circular and rectangular structures. Following test excavations in 2012, more detailed excavation was undertaken in 2016 within one of the largest rectangular stone structures.
Khalid Alasmari   +6 more
wiley   +1 more source

Thermal fatigue and oxidation data for directionally solidified MAR-M 246 turbine blades [PDF]

open access: yes
Thermal fatigue and oxidation data were obtained for 11 plasma spray coated and 13 uncoated directionally solidified and single crystal MAR-M 246 blades.
Hill, V. L., Humphreys, V. E.
core   +1 more source

Seismic Stabilization of Historic Adobe Structures: Final Report of the Getty Seismic Adobe Project [PDF]

open access: yes, 2000
Provides the final report of GSAP activities, and the first publication to provide an overview of the results of scale-model laboratory research along with field data from a survey of damage to historic adobe buildings after an actual ...
E. Leroy Tolles   +3 more
core  

What can lithics tell us about hominin technology's ‘primordial soup’? An origin of stone knapping via the emulation of Mother Nature

open access: yesArchaeometry, EarlyView.
Abstract The use of stone hammers to produce sharp stone flakes—knapping—is thought to represent a significant stage in hominin technological evolution because it facilitated the exploitation of novel resources, including meat obtained from medium‐to‐large‐sized vertebrates. The invention of knapping may have occurred via an additive (i.e., cumulative)
Metin I. Eren   +23 more
wiley   +1 more source

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