4 articles for “Positron”

Set a search alert

Research ArticleOpen accessEvery word in the titlePositron Annihilation Study on Nickel and Iron Nano-Particles in Natural Rubber CompositesEmad Hassan AlyProblem statement: The effect of Ni and Fe nano-particles as a filler on the free volume properties Of Natural Rubber (NR) was studied using Positron Annihilation Lifetime Spectroscopy (PALS). Approach: The PAL measurements revealed that the free volume properties are strongly affected by the amount and type of filler. Results: Particularly speaking, the free volume fraction dramatically decreased by increasing … …American Journal of Applied Sciences, Vol. 8, Issue 2 · 28 Feb 2011 · 7,625 accessesView PDF Cite

Research ArticleOpen accessIn the keywordsAn Assumption Regarding the way Matter is Constituted and Structured from LightFlorian Ion Tiberiu PetrescuThe paper briefly presents some basic ideas on how matter is constituted and structured, based on permanent light as intrinsic energy. The fact that photons cannot be stored directly inside matter has not prevented it from having multiple hearts of energy springing from light, in the form of positive and negative electrical charges, which form the energy base of matter … …American Journal of Engineering and Applied Sciences, Vol. 15, Issue 2 · 8 Jun 2022 · 6,271 accessesView PDF Cite

Research ArticleOpen accessIn the keywordsContent Based Image Retrieval of Ultrasound Liver Diseases Based on Hybrid ApproachR. Suganya, S. RajaramProblem statement: In the past few years, immense improvement was obtained in the field of Content-Based Image Retrieval (CBIR). Nevertheless, existing systems still fail when applied to medical image databases. Simple feature-extraction algorithms that operate on the entire image for characterization of color, texture, or shape cannot be related to the descriptive semantics of medical knowledge that is extracted from … …American Journal of Applied Sciences, Vol. 9, Issue 6 · 24 Mar 2012 · 7,643 accessesView PDF Cite

Case ReportOpen accessIn the abstractA Case of a Young Patient with Acute Endocarditis and Challenging Diagnostic and Treatment DecisionsPau Rello, Teresa González-Alujas, Laura Escolà-Vergé et al.Despite advances achieved in recent years, Infective Endocarditis (IE) remains a disease associated with high mortality and morbidity. When it involves multiple locations at the same time, deciding the best treatment can become challenging. In some cases, especially in patients with prosthetic valve endocarditis, a definitive diagnosis can be difficult to achieve and multimodality imaging including Positron Emission Tomography/Computed Tomography … …American Journal of Infectious Diseases, Vol. 17, Issue 3 · 9 Jun 2021 · 7,382 accessesView PDF Cite