Results 141 to 150 of about 14,186,708 (331)

A new Manifestation of Atomic Parity Violation in Cesium: a Chiral Optical Gain induced by linearly polarized 6S-7S Excitation

, 2002
We have detected, by using stimulated emission, an Atomic Parity Violation (APV) in the form of a chiral optical gain of a cesium vapor on the 7S - 6P$_{3/2}$ transition,consecutive to linearly polarized 6S-7S excitation.
A. V. Papoyan, A. Wasan, C. Bouchiat, D. Chauvat, D. Sarkisyan, D. G. Sarkisyan, E. Jahier, J. Guéna, J. Guéna, J. Guéna, M. A. Bouchiat, M. Lintz, M. A. Bouchiat, M. A. Bouchiat, M. A. Bouchiat, M. A. Bouchiat, M. A. Bouchiat, Ph. Jacquier, S. Sanguinetti   +18 more
core   +1 more source

Geometric Optimization and Mechanical Performance Enhancement of Auxetic Structures for High‐Impact Applications Through Fused Deposition Modeling

Advanced Engineering Materials, EarlyView.
This study explores the mechanical performance of three auxetic structures, identifying a re‐entrant‐star hybrid as the most effective for impact absorption. Finite element simulations and experiments demonstrate significant gains in energy absorption and flexural strength after geometric optimization. This study investigates the mechanical performance
Malik Hassan, Manjusri Misra, Alexander Bardelcik, Stefano Gregori, Amar K. Mohanty   +4 more
wiley   +1 more source

Study on Centroid Height Prediction of Non-Rigid Vehicle Based on Deep Learning Combined Model

Sensors
The height of the center of gravity (ZCG) is a critical parameter for evaluating vehicle safety and performance. Systematic errors arise in ZCG measurement via the tilt-table test method due to unlocked suspension systems and variable sprung mass ...
Guoqiang Pang, Zhiquan Xiao, Zhanwen Cai, Pei Wang   +3 more
doaj   +1 more source

Dynamic Precipitation during High‐Pressure Torsion of a Magnesium–Manganese Alloy

Advanced Engineering Materials, EarlyView.
An ultrafine‐grained alloy is produced by high‐pressure torsion of solutionized Mg–1.35 wt% Mn. Precipitation of nanometer‐scale Mn particles during deformation provides pinning sites. This prevents the formation of a bimodal grain structure and results in a finer grain size than for pure Mg.
Julian M. Rosalie, Anton Hohenwarter
wiley   +1 more source

COMPARISON OF HEART RATE VARIABILITY IN NEGATIVE AND POSITIVE RESPONDERS TO ACTIVE PHASE OF HEAD-UP TILT TEST

Pakistan Armed Forces Medical Journal, 2018
Objective: To compare heart rate variability in negative and positive responders to active phase of head-up tilt test. Study Design:Cross-sectional comparative study.
Sara Naeem, Hira Ashraf, Azmat Hayat, Muhammad Alamgir Khan   +3 more
doaj  

Dynamic structural aeroelastic stability testing of the XV-15 tilt rotor research aircraft [PDF]

For the past 20 years, a significant effort has been made to understand and predict the structural aeroelastic stability characteristics of the tilt rotor concept.
Schroers, L. G.
core   +1 more source

Laser Metal Deposited Ti4822 Hollow Pipe: Experimental and Computational Modelling Study

Advanced Engineering Materials, EarlyView.
Laser metal deposition (LMD) of a crack‐free built Ti4822 alloys is challenging. This article reports outstanding characteristics of a hollow pipe that is built with LMD technology when a predicted, nontransformation substrate temperature of 800 °C is used.
Sadiq A. Raji, Monnamme Tlotleng, Samuel Skhosane, Lehlogonolo R. Kanyane, Abimbola P. I. Popoola, Sisa L. Pityana   +5 more
wiley   +1 more source

Understanding the Effect of Resistance Temperature Detector Temperature Controllers on Microstructural Alignment in Magnetic Freeze Casting

Advanced Engineering Materials, EarlyView.
The effect of temperature controllers that are commonly used in freeze‐casting is investigated in this work. Temperature controllers are observed to generate a voltage in the slurry. Microstructural alignment and ultimate compressive strength data show this voltage to interfere with the ability to align the microstructure using magnetic fields ...
Maddie A. Schmitz, Steven E. Naleway
wiley   +1 more source

Greatly exaggerated blood pressure responses to tilt table testing in hypertensives with neurocardiogenic syncope [PDF]

, 2001
A Babaev
openalex   +1 more source

Overview of NASA PTA propfan flight test program [PDF]

The progress is covered of the NASA sponsored Propfan Test Assessment (PTA) flight test program. In PTA, a 9 ft. diameter propfan was installed on the left wing of a Gulfstream GII executive jet and is undergoing extensive flight testing to evaluate ...
Graber, Edwin J.
core   +1 more source