Results 91 to 100 of about 365,940 (292)

Molecular dynamics simulation of polymer helix formation using rigid-link methods

, 2002
Molecular dynamics simulations are used to study structure formation in simple model polymer chains that are subject to excluded volume and torsional interactions.
A. Dullweber, A. Jain, A. Jain, A. Jain, B. L. de Groot, C. L. Brooks III, D. C. Rapaport, D. C. Rapaport, D. J. Evans, E. I. Shakhnovich, E. M. Boczko, G. Ciccotti, G. M. Crippen, G. Rodriguez, H. C. Anderson, H. J. C. Berendsen, J. C. Nelson, J.-P. Ryckaert, K. A. Dill, L. Verlet, M. Levitt, R. A. Bertsch, R. Edberg, V. S. Pande, Y. Duan, Y. Ueda, Y. Zhou, Y. Zhou   +27 more
core   +1 more source

Validation of the Pediatric Arthritis Ultrasound Scoring System for the Elbow, Wrist, and Finger Joints in Children With Juvenile Idiopathic Arthritis

Arthritis Care &Research, EarlyView.
Objective We aimed to validate the Pediatric Arthritis Ultrasound Scoring System (PAUSS) for upper extremity joints in children with juvenile idiopathic arthritis (JIA). Methods Children with JIA were evaluated for elbow, wrist, or finger arthritis by clinical examination (CE) and musculoskeletal ultrasound (MSUS) with images scored according to the ...
Patricia Vega‐Fernandez, Pinar Ozge Avar‐Aydin, Kelly Rogers, Daniel J. Lovell, Jennifer Huggins, Alexei Grom, Hermine I. Brunner, Grant S. Schulert, Sheila T. Angeles‐Han, Mekibib Altaye, Amy Cassedy, Arthur B. Meyers, Tracy V. Ting   +12 more
wiley   +1 more source

J-factors of short DNA molecules

, 2016
The propensity of short DNA sequences to convert to the circular form is studied by a mesoscopic Hamiltonian method which incorporates both the bending of the molecule axis and the intrinsic twist of the DNA strands.
Bates A. D., Feynman R. P., Feynman R. P., Marco Zoli, Schulman L. S.   +4 more
core   +1 more source

Influence of Sample Preparation and Processing Procedures on the Thermal Diffusivity of MgO‐C Refractories

Advanced Engineering Materials, EarlyView.
The thermal diffusivity of MgO‐C refractories is highly sensitive to sample preparation and processing procedures. In this article, the effects of coking sequence, machining conditions, structural inhomogeneity, and graphite coating application on measurements using laser flash apparatus are systematically investigated.
Luyao Pan, Rhena Wulf, Till M. J. Stadtmüller, Christos G. Aneziris, Tobias M. Fieback   +4 more
wiley   +1 more source

The tails in the Helix Nebula NGC 7293

, 2006
We have examined a stream-source model for the production of the cometary tails observed in the Helix Nebula NGC 7293 in which a transonic or moderately supersonic stream of ionized gas overruns a source of ionized gas.
Cantó, Cerruti-Sola, Diamond, Dyson, Dyson, Dyson, Falle, Hartquist, Henry, Huggins, J. E. Dyson, J. M. Pittard, J. Meaburn, Lefloch, López-Martin, Meaburn, Meaburn, Meaburn, Meaburn, Meaburn, Meixner, Mellema, ODell, ODell, ODell, ODell, ODell, Patriarchi, Pavlakis, Pittard, Rijkhorst, S. A. E. G. Falle, Van Blerkom   +32 more
core   +2 more sources

EBSD Study of Creep‐Induced Lattice Misorientation in MgO‐Particle‐Reinforced Austenitic Steel Composites

Advanced Engineering Materials, EarlyView.
Creep experiments at 900°C on coarse‐grained steel‐ceramic composites containing recycled magnesia reveal that higher ceramic volume fractions significantly enhance the creep resistance. Detailed EBSD investigations identify subgrain formation in the steel matrix as the dominant deformation mechanism.
Moritz Müller, Amaya Compart, Mahnaz Mehdizadehlima, Serhii Yaroshevskyi, Christos G. Aneziris, Horst Biermann, Anja Weidner   +6 more
wiley   +1 more source

Comparative Analysis of Visual and Anatomical Outcomes of Drainage Retinotomy: LASER Alone Versus LASER with Amniotic Membrane Graft

Proceedings
Background: Rhegmatogenous retinal detachment (RRD) is a vision-threatening condition that requires timely surgical intervention to prevent permanent visual loss.
Hussain Ahmad Khaqan, Hafiz Atteq Ur Rehman, Hasnain Muhammad Baksh, Ahmad Fauzan, Muhammad Zafar Iqbal, Neeta Maheshwary, Dilshad Hussain, Athar Khan   +7 more
doaj  

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth, Tomáš Babinský, Jan Lars Riedel, Wen Hao Kan, Aijun Huang, Martin Heilmaier, Ivo Šulák   +6 more
wiley   +1 more source

Rotational dynamics of a superhelix towed in a Stokes fluid

, 2007
Motivated by the intriguing motility of spirochetes (helically-shaped bacteria that screw through viscous fluids due to the action of internal periplasmic flagella), we examine the fundamental fluid dynamics of superhelices translating and rotating in a ...
Charon N. W., Gray J., Kathleen Mareck, Lisa Fauci, Michael J. Shelley, Sunghwan Jung   +5 more
core   +1 more source

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