Results 31 to 40 of about 1,904 (243)

Quantification of the uncertainties of high-speed camera measurements

open access: yesInternational Journal of Metrology and Quality Engineering, 2014
This article proposes a combined theoretical and experimental approach to assess and quantify the global uncertainty of a high-speed camera velocity measurement.
Robbe C., Nsiampa N., Oukara A., Papy A.
doaj   +1 more source

Firearms and ballistics. [PDF]

open access: yes, 2016
Chapter 7 of the book entitled 'Practical Veterinary Forensics' aims to introduce forensic veterinarians to the scientific concepts underpinning the field of firearms and ballistics. This introduction will enable practitioners to understand wound formation depending on the firearm and ammunition used.
BOLTON-KING, Rachel, Schulze, Johan
openaire   +1 more source

Extent of Forensic Practices of Police Investigators: A Basis for Enhancement Plan

open access: yesJPAIR, 2023
In criminal investigations, the Directorate for Investigation and Detective Management – Police investigators are required by Philippine National Police orders to conduct forensic science-based crime scene investigations.
Japhet Quiape, Ermee Joy Painaga
doaj   +1 more source

Micro-motion feature extraction of narrow-band radar target based on ROMP

open access: yesThe Journal of Engineering, 2019
In this study, a new method based on regularised orthogonal matching pursuit (ROMP) decomposition is proposed to extract the feature of the ballistic target's rotating micro-motion.
Shuai Chen, Cunqian Feng, Xuguang Xu
doaj   +1 more source

Ballistic spin resonance [PDF]

open access: yesNature, 2009
The phenomenon of spin resonance has had far reaching influence since its discovery nearly 70 years ago. Electron spin resonance (ESR) driven by high frequency magnetic fields has informed our understanding of quantum mechanics, and finds application in fields as diverse as medicine and quantum information.
Frolov, S. M.   +5 more
openaire   +3 more sources

Chemical compatibility of energetic metal complexes with polymers by thermal analytical techniques

open access: yesFirePhysChem
Energetic metal complexes have been established to be effective combustion catalyst for energetic composites and propellants with improved performance. Chemical compatibility is an important aspect in the development of novel energetic composites which ...
Priyanka Singla   +4 more
doaj   +1 more source

Beyond Ballistics

open access: yesAmerican Journal of Men's Health, 2011
Although the literature on men’s help seeking offers important insights into health service engagement patterns within this population, there remain gaps in our understanding.
Lisa M. Wenger MA, PhD(c)
doaj   +1 more source

Uniform Amorphization of Crystalline Silicon Surfaces Enabled by Deep Ultraviolet Femtosecond Laser Pulses

open access: yesAdvanced Engineering Materials, EarlyView.
Deep‐UV (258 nm) femtosecond pulses enable uniform amorphous silicon writing on Si(100)/(111) with a six‐fold larger fluence amorphization window than NIR methods. Optimized fluence and overlap yield 20–45 nm uniform and continuous amorphous layers. Microscopy shows sharp interfaces, and real‐time reflectivity reveals nanosecond melt–resolidification ...
Wissal Benali   +5 more
wiley   +1 more source

Chiral Phase Change Nanomaterials

open access: yesAdvanced Functional Materials, EarlyView.
This work demonstrates reversible, non‐volatile phase transitions in chiral Ge2${\rm Ge}_2$Sb2${\rm Sb}_2$Te5${\rm Te}_5$ (GST) nanohelices for high‐speed optical modulation of chirality and dynamic control of the state of polarization (SOP). The chiral nanostructures are fabricated using a highly directional, wafer‐scale physical vapor deposition ...
Joshua A. Burrow   +11 more
wiley   +1 more source

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