Results 111 to 120 of about 2,455,495 (384)

Use of recycled tires in non-structural concrete

MATEC Web of Conferences, 2017
This research addresses the issue of tire waste management and natural aggregate resource depletion. It investigates use of commercially produced recycled tire rubber as replacement for fine and coarse aggregate in non-structural concrete.
Al Rawahi Zamzam, Bilal Waris Muhammad
doaj   +1 more source

CALPHAD‐Guided Prediction and Interpretation of Phase Formation in Ta–Mo–Cr–Ti–Al Refractory High‐Entropy Alloys

Advanced Engineering Materials, EarlyView.
This study designs Ta–Mo–Cr–Ti–Al refractory high‐entropy alloys with a disordered body‐centered‐cubic A2 crystal structure aiming for improved ductility, lower density, and oxidation resistance. Four alloy compositions are identified by thermodynamic calculations.
Kateryna Khanchych, Chongchong Tang, Carsten Schroer, Björn Schäfer, Judith Jung, Michael Dürrschnabel, Ute Jäntsch, Bronislava Gorr   +7 more
wiley   +1 more source

Disentangling the Free-Fall Arch Paradox in Silo Discharge.

Physical Review Letters, 2015
Several theoretical predictions of the mass flow rate of granular media discharged from a silo are based on the spontaneous development of a free-fall arch region, the existence of which is still controversial. In this Letter, we study experimentally and
S. M. Rubio-Largo, A. Janda, D. Maza, I. Zuriguel, R. Hidalgo   +4 more
semanticscholar   +1 more source

Powder Metallurgy Preparation of Metastable β Ti–Cr–Ge Alloys for Medical Applications

Advanced Engineering Materials, EarlyView.
This study develops metastable β Ti–Cr–Ge alloys using powder metallurgy for biomedical implants. The Ti–10Cr–2Ge alloy exhibits superior mechanical performance with high yield strength (>1100 MPa), low Young's modulus (<85 GPa), and excellent strain hardening behavior.
Teddy Sjafrizal, Damon Kent, Ali Dehghan‐Manshadi, Matthew S. Dargusch   +3 more
wiley   +1 more source

One-Sided Testing for ARCH Effect Using Wavelets [PDF]

There has been an increasing interest in hypothesis testing with inequality restrictions. An important example in time series econometrics is hypotheses on autoregressive conditional heteroskedasticity (ARCH).
Jin Lee
core  

A comparison between the MEXE and Pippard's methods of assessing the load carrying capacity of masonry arch bridges [PDF]

, 2013
The Military Engineering eXperimental Establishment (MEXE) method is a long established system of masonry arch load carrying capacity assessment. It has been subject to review in recent years and some shortcomings have been identified.
Haynes, BJ, Melbourne, C, Wang, J
core  

The fine-structure of volatility feedback I: multi-scale self-reflexivity

, 2013
We attempt to unveil the fine structure of volatility feedback effects in the context of general quadratic autoregressive (QARCH) models, which assume that today's volatility can be expressed as a general quadratic form of the past daily returns.
Akaike, Bacry, Bekaert, Blanc, Blanc, Bollerslev, Bollerslev, Borland, Bouchaud, Bouchaud, Bouchaud, Calvet, Chicheportiche, Cont, Cutler, Engle, Fair, Filimonov, Floros, Hagan, Hardiman, He, Henry-Labordère, Heston, Jean-Philippe Bouchaud, Joulin, Lillo, Ling, Lux, Lynch, Mandelbrot, Mandelbrot, Meng, Muzy, Müller, Parisi, Pomeau, Reigneron, Rogers, Rémy Chicheportiche, Sentana, Shao, Shiller, Sornette, Sornette, Soros, Teyssière, Tóth, Xie, Zawadowski, Zumbach, Zumbach   +51 more
core   +3 more sources

Total aortic arch replacement with frozen elephant trunk in acute type A aortic dissections: are we pushing the limits too far?†.

European Journal of Cardio-Thoracic Surgery, 2015
OBJECTIVES Acute type A aortic dissection (AADA) is a surgical emergency. In patients with aortic arch and descending aorta (DeBakey type I) involvement, performing a total aortic arch replacement with frozen elephant trunk (FET) for supposedly better ...
M. Shrestha, F. Fleissner, F. Ius, N. Koigeldiyev, T. Kaufeld, E. Beckmann, A. Martens, A. Haverich   +7 more
semanticscholar   +1 more source

Titanium‐S23: A New Alloy with Ultra‐High Tensile Toughness Directly from the Solid‐State Processing of Recycled Ti–6Al–4V and Ti–5Al–5Mo–5V–3Cr Powders using Field Assisted Sintering Technology

Advanced Engineering Materials, EarlyView.
This study explores combining two existing aerospace titanium alloy powders, processing them via field‐assisted sintering technology and the subsequent discovery of a novel alloy composition, termed S23, with ultra‐high tensile toughness. Fine‐scale alpha precipitates favorably form in the alloy despite the relatively slow cooling, providing an ...
Samuel Lister, Gavin J. Baxter, Martin Jackson   +2 more
wiley   +1 more source

An Experimental Study of Methods of Prophylactic Immunization Against Typhoid Fever.???GAY and CLAYPOLE (Arch. Int. Med., 1914, xiv, 67) [PDF]

, 1915
SAMUEL W. LAMBERT
openalex   +1 more source