Results 81 to 90 of about 79,313 (301)

Constraining the Black Hole Mass Spectrum with Gravitational Wave Observations I: The Error Kernel [PDF]

, 2009
Many scenarios have been proposed for the origin of the supermassive black holes (SMBHs) that are found in the centres of most galaxies. Many of these formation scenarios predict a high-redshift population of intermediate-mass black holes (IMBHs), with ...
Becker, Begelman, Bender, Bromm, Cutler, Djorgovski, Ebisuzaki, Fan, Ferrarese, Flanagan, Flanagan, Gebhardt, Haehnelt, Hellings, Jennrich, Kormendy, Koushiappas, Lacey, Lang, Madau, Magorrian, Merritt, Moore, Ohkubo, Ohkubo, Ohkubo, Portegies Zwart, Portegies Zwart, Rees, Rees, Richstone, Sesana, Sesana, Somerville, Stern, Tanaka, Thorne, Tremaine, Tsuruta, Umeda, Vallisneri, Vallisneri, Volonteri, Zheng   +43 more
core   +4 more sources

Air‐Pressure–Actuated Vibroacoustic Metamaterial With Tunable Bandgap: Design, Modeling, and Characterization

Advanced Engineering Materials, EarlyView.
This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal, Michael M. Becker, Sarah C. L. Fischer   +2 more
wiley   +1 more source

On the Influence of Antioxidants and Recycled MgO–C Source Material on the Mechanical Properties of Carbon‐Bonded Magnesia Refractories

Advanced Engineering Materials, EarlyView.
The presented study focuses on the fracture behaviour of carbon‐bonded magnesia MgO–C refractories, where environmentally friendly fructose, collagen and lignin serve as temporary binding agents. The partial substitution of the source material with recycled MgO–C reduces the fracture resistance, which can be counteracted by the additional introduction ...
Marc Neumann, Tom Weber, Jana Hubálková, Florian Kerber, Dinesh Kumar Gunasekar, Hans Jelitto, Christos G. Aneziris   +6 more
wiley   +1 more source

Four‐Point Bending Tests at High Temperatures on Commercial MgO‐C Refractory Bricks with and Without Recyclate Considering Different Carbon Contents

Advanced Engineering Materials, EarlyView.
Four‐point bending tests are conducted in an argon atmosphere on commercial MgO‐C brick grades with and without MgO‐C recyclate from room temperature up to 1300 °C. No detrimental effect of the MgO‐C recyclates on bending strength is found. Instead, a decisive influence of the total carbon content is observed, with lower total carbon contents ...
Alexander Schramm, Lukas Knöchel, Thomas Schemmel, Christos G. Aneziris, Anja Weidner, Horst Biermann   +5 more
wiley   +1 more source

Enhancement of initial shear modulus in cement and fly ash admixed Bangkok clay out of bender element test

Discover Sustainability
This article aims to investigate the initial shear modulus development in Ordinary Portland Cement (OPC) and Fly ash (FA) admixed Bangkok clay. The role of cement is to stabilize and enhance the compressive strength of Bangkok soft clay.
Sakol Pochalard, Kitti Promsang, Chalermpon Wungsumpow, Keeratikan Piriyakul   +3 more
doaj   +1 more source

K0-determination by stress path triaxial apparatus with bender element

Yantu gongcheng xuebao, 2017
The coefficient of lateral earth pressure at rest K0 of Shanghai soft clay is measured by the GDS stress path triaxial device. The shear wave velocity and the corresponding small strain shear stiffness at K0 state are also determined by the bender ...
LIU Lin 1, 2, GU Xiao-qiang 1,2,3, HUANG Mao-song 1, 2
doaj   +1 more source

Experimental Investigation on Small-Strain Stiffness of Marine Silty Sand

Journal of Marine Science and Engineering, 2020
The significance of small-strain stiffness (Gmax) of saturated composite soils are still of great concern in practice, due to the complex influence of fines on soil fabric. This paper presents an experimental investigation conducted through comprehensive
Qi Wu, Qingrui Lu, Qizhou Guo, Kai Zhao, Pen Chen, Guoxing Chen   +5 more
doaj   +1 more source

Elastic Parameters of Intermediate Soils Based on Bender-Extender Elements Pulse Tests

Soils and Foundations, 2011
The elastic behaviour of compacted soils subjected to very small strains (smaller than 10 －5) is essential, because the serviceability of most geotechnical structures depends on soil elastic properties. Small-strain stiSness of soils was studied in the past years using diSerent experimental devices (mainly resonant columns).
Murillo, Carol, Sharifipour, Mohammad, Caicedo, Bernardo, Thorel, Luc, Dano, Christophe   +4 more
openaire   +3 more sources

Thermophysical Properties of the Desulphurization Slags With Various CaS and CaO/Al2O3 Ratio

Advanced Engineering Materials, EarlyView.
This article investigates how CaS content and the CaO/Al2O3 ratio influence the thermophysical properties of desulphurization slags. Using experimental measurements and thermodynamic simulations, this study reveals complex effects on viscosity, surface tension, and density, providing new insight into slag structure and phase behavior under ...
Eldar Salpagarov, Matheus Roberto Bellé, Anton Yehorov, Julia Richter, Olena Volkova   +4 more
wiley   +1 more source

Sources of Uncertainty in Bender Element Testing: Execution and Interpretation Challenges in Reconstituted Sandy Soils

Geotechnics
This paper discusses the principal sources of uncertainty in the execution and interpretation of Bender Element (BE) tests conducted on reconstituted sand samples.
António M. G. Pedro, Paulino Dias Santos, Luís Araújo Santos, Paulo Coelho   +3 more
doaj   +1 more source