Results 101 to 110 of about 21,887 (231)

Development of an Analytic Nodal Diffusion Solver in Multigroups for 3D Reactor Cores with Rectangular or Hexagonal Assemblies. [PDF]

, 2009
More accurate modelling of physical phenomena involved in present and future nuclear reactors requires a multi-scale and multi-physics approach. This challenge can be accomplished by the coupling of best-estimate core-physics, thermal-hydraulics and ...
Aragonés Beltrán, José María, García Herranz, Nuria, Lozano Montero, Juan Andrés   +2 more
core   +1 more source

The Newtonian limit of spacetimes for accelerated particles and black holes

, 2009
Solutions of vacuum Einstein's field equations describing uniformly accelerated particles or black holes belong to the class of boost-rotation symmetric spacetimes. They are the only explicit solutions known which represent moving finite objects.
C. Misner, David Kofroň, E. Cartan, E. Cartan, F. Ernst, H. Bondi, H. Dowker, H. Stephani, J. Bičák, J. Bičák, J. Bičák, J. Bičák, J. Bičák, J. Bičák, J. Bičák, J. Ehlers, Jiří Bičák, K. Dutta, K. Friedrichs, R. Corless, R. Gómez, R. Lazkoz, S. Antoci, S. Scott, S. Scott, V. Pravda, W. Bonnor, W. Bonnor, W. Israel, W. Kinnersley, W. Rindler   +30 more
core   +2 more sources

Computational Investigation on the Combined Effect of Applied Strain and Pore Configuration on Strain Concentrators in Additively Manufactured Metals

Fatigue &Fracture of Engineering Materials &Structures, Volume 49, Issue 5, Page 1656-1679, May 2026.
ABSTRACT Metal additive manufacturing (AM) provides a pathway for creating highly optimized components that would be difficult to produce using traditional manufacturing methods. However, regardless of printing parameters or postprocessing, porosity remains a prevalent challenge in AM components because strain concentrates in the vicinity of the pore ...
Erick Adan Ramirez, Saikumar Reddy Yeratapally, George Robert Weber, Kenji Shimada   +3 more
wiley   +1 more source

Behavior of triangular shell element stiffness matrices associated with polyhedral deflection distributions [PDF]

Stiffness matrices derived for triangular shell elements associated with polyhedral deflection ...
Melosh, R. J., Utku, S.
core   +1 more source

Standardized Instance‐Level Quantification of CD34‐Positive Vessels in Lymph Node Whole‐Slide Images Using U‐Net

Pathology International, Volume 76, Issue 5, May 2026.
We develop a deep learning approach to detect and count individual CD34‐positive vessels in lymph‐node whole‐slide images. Using an object‐level method based on U‐Net, the model captures vascular morphology, and vessel counts are corrected through simple fixed post‐processing.
Satomi Omotani, Natsumi Yonemoto, Akifumi Muramoto, Motohiro Kobayashi   +3 more
wiley   +1 more source

Research on the Dynamic Modeling of Rigid–Flexible Composite Spacecraft Under Fixed Constraints Based on the ANCF

Aerospace
Dynamically modeling the flexible characteristics of large-scale jointed composite spacecraft is challenging. In this study, a dynamic modeling method for rigid–flexible composite spacecraft is proposed based on the absolute nodal coordinate formulation (
Jiaqi Wu, Guohua Kang, Junfeng Wu, Chuanxiao Xu, Jiayi Zhou, Xinyong Tao, Yinmiao Hua   +6 more
doaj   +1 more source

Compilation and utilization of a sorghum transcriptome compendium for gene regulatory network analysis and crop trait engineering

The Plant Journal, Volume 126, Issue 4, May 2026.
SUMMARY Sorghum bicolor (Sorghum) is a drought and heat tolerant C4 grass crop used to produce grain, forage, biofuels, and other bioproducts. Genetic improvement of sorghum hybrid crops is aided by a large and diverse germplasm, sorghum's diploid inbreeding genetics, and a relatively small genome that has facilitated genomic research. Over the past 20 
Priscilla D. Glenn, Brian A. McKinley, Kerrie Barry, Jeremy Schmutz, John E. Mullet   +4 more
wiley   +1 more source

On the Dynamics of Flexible Wings for Designing a Flapping-Wing UAV

Drones
The increasing number of applications involving the use of UAVs has motivated the research for design considerations that increase the safety, endurance, range, and payload capability of these vehicles.
Renan Cavenaghi Silva, Douglas D. Bueno
doaj   +1 more source

Asperity‐Driven Cascading Rupture of a Mw 1.6 Induced Microearthquake

Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.
Abstract Studies of small earthquake (M < 2) rupture processes traditionally rely on simplified models that assume symmetric slip or point sources. Using an exceptionally dense seismic network and empirical Green's function (EGF) analysis, we investigate the complex rupture of a Mw 1.6 microearthquake induced by hydraulic fracturing.
Xinxing Chen, Haichao Chen, Fenglin Niu, Xiaobo Meng   +3 more
wiley   +1 more source

The Development of a Robust Rigid–Flexible Interface and Continuum Model for an Elephant’s Trunk Using Hybrid Coordinate Formulations

Applied System Innovation
The goal of this study was to construct a mathematical and computational model that accurately represents the complex, flexible movements and mechanics of an elephant’s trunk.
Ahmed Ghoneimy, Mohamed O. Helmy, Ayman Nada, Ahmed El-Assal   +3 more
doaj   +1 more source