Search Results - "Youssef, M A"

Simplified Model for Small-Strain Nonlinearity and Strength in 1D Seismic Site Response Analysis by Groholski, David R, Hashash, Youssef M. A, Kim, Byungmin, Musgrove, Michael, Harmon, Joseph, Stewart, Jonathan P

“…AbstractCommonly used simplified one-dimensional nonlinear seismic site response analyses employ constitutive models based on a variation of the hyperbolic…”
Get full text

Nonlinear Site Response Analysis with Pore-Water Pressure Generation for Liquefaction Triggering Evaluation by Olson, Scott M, Mei, Xuan, Hashash, Youssef M. A

“…AbstractThe cyclic-stress approach is widely used to evaluate level-ground liquefaction triggering. Although easy to use, several limitations introduce…”
Get full text

PEER NGA-East database by Goulet, Christine A, Kishida, Tadahiro, Ancheta, Timothy D, Cramer, Chris H, Darragh, Robert B, Silva, Walter J, Hashash, Youssef M. A, Harmon, Joseph, Parker, Grace A, Stewart, Jonathan P, Youngs, Robert R

“…This article documents the earthquake ground motion database developed for the NGA-East Project, initiated as part of the Next Generation Attenuation (NGA)…”
Get full text

Simulation-based site amplification model for shallow bedrock sites in Korea by Aaqib, Muhammad, Park, Duhee, Adeel, Muhammad Bilal, Hashash, Youssef M. A, Ilhan, Okan

“…A new simulation-based site amplification model for shallow sites with thickness less than 30 m in Korea is developed. The site amplification model consists of…”
Get full text

Evaluation of barium tungstate nanocrystals for the sorption of radioactive cobalt and europium from aqueous solutions by Abdel Maksoud, M. I. A., Youssef, M. A., Hassan, H. S.

“…Herein, barium tungstate BaWO 4 nanocrystals were chemically prepared and then estimated as inorganic sorbent material to eliminate the radioactive cobalt and…”
Get full text

General stress–strain relationship for concrete at elevated temperatures by Youssef, M.A., Moftah, M.

“…A general stress–strain relationship for concrete when subjected to fire is needed, as it allows designing concrete structures to specific fire-performance…”
Get full text

Degradation-Related Changes in Ballast Gradation and Aggregate Particle Morphology by Qian, Yu, Boler, Huseyin, Moaveni, Maziar, Tutumluer, Erol, Hashash, Youssef M. A, Ghaboussi, Jamshid

“…AbstractBallast degradation or fouling often associated with deteriorating railroad track performance refers to the condition of a new ballast layer changing…”
Get full text

Influence of Tall Buildings on Seismic Response of Shallow Underground Structures by Hashash, Youssef M. A, Dashti, Shideh, Musgrove, Michael, Gillis, Kenneth, Walker, Martin, Ellison, Kirk, Basarah, Yuamar I

“…AbstractShallow underground structures are commonly built in close proximity to tall buildings in dense urban environments. Although it is well known that such…”
Get full text

Design, Synthesis, and SAR Studies of Some Novel Chalcone Derivatives for Potential Insecticidal Bioefficacy Screening on Spodoptera frugiperda (Lepidoptera: Noctuidae) by Ali, Ali M., Salah, Hanan, Gad, Mohamed A., M. A. M, Youssef, Elkanzi, Nadia A. A.

“…Spodoptera frugiperda is a species of the order Lepidoptera. It is one of the species of fall armyworm moths distinguished by its larval life stage, is found…”
Get full text

Relative differences between nonlinear and equivalent-linear 1-D site response analyses by Kim, Byungmin, Hashash, Youssef M. A, Stewart, Jonathan P, Rathje, Ellen M, Harmon, Joseph A, Musgrove, Michael I, Campbell, Kenneth W, Silva, Walter J

“…This study investigates the conditions for which one-dimensional (1-D) nonlinear (NL) site response analysis results are distinct from equivalent-linear (EL)…”
Get full text

Effect of maize hybrids on the biological characteristics of the fall armyworm, Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae), under laboratory conditions by Youssef, M A M, Bakry, M M S, Abdel-Baky, N F

“…The fall armyworm (FAW), Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae), an invasive and polyphagous pest affecting various vital crops globally,…”
Get full text

Site amplification functions for central and eastern North America; Part II, Modular simulation-based models by Harmon, Joseph, Hashash, Youssef M. A, Stewart, Jonathan P, Rathje, Ellen M, Campbell, Kenneth W, Silva, Walter J, Ilhan, Okan

“…Site amplification models for Central and Eastern North America are developed from simulation results presented in a companion paper. Linear and nonlinear…”
Get full text

Response of Sands to Multidirectional Dynamic Loading in Centrifuge Tests by Cerna-Diaz, Alfonso, Olson, Scott M, Hashash, Youssef M. A, Numanoglu, Ozgun A, Rutherford, Cassandra J, Bhaumik, Lopamudra, Weaver, Thomas

“…AbstractDynamic centrifuge tests were performed to investigate multidirectional loading effects on the shear and volumetric response of saturated sands under…”
Get full text

Pain inhibits pain; human brainstem mechanisms by Youssef, A.M., Macefield, V.G., Henderson, L.A.

“…Conditioned pain modulation is a powerful analgesic mechanism, occurring when a painful stimulus is inhibited by a second painful stimulus delivered at a…”
Get full text

Analytical prediction of the seismic behaviour of superelastic shape memory alloy reinforced concrete elements by Alam, M.S., Youssef, M.A., Nehdi, M.

“…Superelastic shape memory alloys (SMAs) are unique materials that have the ability to undergo large deformations, but can return to their undeformed shape by…”
Get full text

Thalamic activity and biochemical changes in individuals with neuropathic pain after spinal cord injury by Gustin, S.M., Wrigley, P.J., Youssef, A.M., McIndoe, L., Wilcox, S.L., Rae, C.D., Edden, R.A.E., Siddall, P.J., Henderson, L.A.

“…Neuropathic pain following spinal cord injury is associated with altered thalamic biochemistry, structure and function, which may disturb central processing…”
Get full text

Synthesis and characterization of high surface area nanosilica from rice husk ash by surfactant-free sol–gel method by Hassan, A. F., Abdelghny, A. M., Elhadidy, H., Youssef, A. M.

“…A nanosilica powder was obtained by thermal treatment of rice husk ash using the sol–gel method without adding any extra surfactant, and was characterized by…”
Get full text

Role of Initial Particle Arrangement in Ballast Mechanical Behavior by Qian, Yu, Lee, Seung Jae, Tutumluer, Erol, Hashash, Youssef M. A, Ghaboussi, Jamshid

“…AbstractBallast containing large aggregate particles with uniform gradation is an essential layer in a railway substructure to facilitate load distribution and…”
Get full text

Mitigating Lateral Spreading Forces on Large Foundations Using Ground Deflection Walls by Olson, Scott M, Muszynski, Mark R, Hashash, Youssef M. A, Phillips, Camilo

“…AbstractDeflection walls were considered for mitigating lateral spreading-induced bending moments on large-dimension foundations. The efficacy of the walls was…”
Get full text

Generalized Non-Masing Hysteresis Model for Cyclic Loading by Numanoglu, Ozgun A, Musgrove, Michael, Harmon, Joseph A, Hashash, Youssef M. A

“…AbstractCyclic behavior of soils is often modeled using the Masing rules. When these rules are applied, hysteretic damping at large strains is overestimated. A…”
Get full text