Results 21 to 30 of about 272,609 (317)

On the accuracy of techniques for determining neutron compound-nucleus formation cross sections

open access: yesEPJ Web of Conferences, 2010
We consider three methods for determining neutron nonelastic cross sections: direct measurement by transmission of neutrons through a spherical shell; subtraction of the angle-integrated elastic cross section from the total cross section; and a ...
Dietrich F.S.
doaj   +1 more source

Gluon Regge trajectory at two loops from Lipatov's high energy effective action [PDF]

open access: yes, 2013
We present the derivation of the two-loop gluon Regge trajectory using Lipatov's high energy effective action and a direct evaluation of Feynman diagrams.
Chachamis, G.   +3 more
core   +2 more sources

Comparison of Accuracy of Conventional Periapical Radiography and Direct Digital Subtractions Radiography with or without Image Enhancement in the Diagnosis of Density Changes

open access: yesJournal of Dental Research, Dental Clinics, Dental Prospects, 2012
Background and aims. In periapical radiographic technique, the changes will be visible only after considerable deposition or resorption while digital subtraction technique visualizes slight density changes. This study was aimed to compare visualization
Tahmineh Razi   +2 more
doaj   +1 more source

Subtraction Technique in Intravenous Aortography

open access: yesRadiology, 1977
Excretory urography using the subtraction technique (100 ml of 60% urographic media injected in 10-12 seconds) demonstrated the aorta and its major branches well enough to prove useful clinically. The method is fast and graphic, and risk seems no greater than that associated with the standard urographic examination.
William J. Mikkelsen   +3 more
openaire   +5 more sources

Value of Image Subtraction for the Identification of Hepatocellular Carcinoma Capsule on Gadoxetic Acid-Enhanced MRI

open access: yes대한영상의학회지, 2018
Purpose To evaluate value of image subtraction for identifying hepatocellular carcinoma (HCC) capsule on gadoxetic acid-enhanced MR images. Materials and Methods This study involved 108 patients at risk of HCC preoperatively examined using ...
Hyunjung Kim   +3 more
doaj   +1 more source

Resonance-aware subtraction in the dipole method

open access: yesEuropean Physical Journal C: Particles and Fields, 2019
We present a technique for infrared subtraction in next-to-leading order QCD calculations that preserves the virtuality of resonant propagators. The approach is based on the pseudo-dipole subtraction method proposed by Catani and Seymour in the context ...
Stefan Höche   +2 more
doaj   +1 more source

High-Stringency Subtraction for the Identification of Differentially Regulated cDNA Clones

open access: yesBioTechniques, 1997
The technique of high-stringency subtraction described here facilitates subtractive hybridizations between directional cDNA libraries constructed in λ ZAP® II cloning vectors and represents an improvement on earlier methods for the subtraction of entire ...
Charles P. Scutt, Philip M. Gilmartin
doaj   +1 more source

Near-surface defect detection in additively manufactured components using laser induced phased arrays with surface acoustic wave crosstalk suppression

open access: yesMaterials & Design, 2023
In-process inspection of the additive manufacturing process requires a technique that can provide reliable measurements given the extreme operating environments, the small size of the defects and the cyclic melting and heating of the material, caused by ...
Geo Davis   +11 more
doaj   +1 more source

Additive role of dynamic subtraction MRI in assessment of unresolved HCC post-radiofrequency ablation

open access: yesThe Egyptian Journal of Radiology and Nuclear Medicine, 2021
Background Malignant Hepatocellular carcinoma (HCC) is one amongst the foremost widespread cancers within the world. Radiofrequency ablation (RFA) is that the most generally used substitute tool for hepatic carcinoma treatment.
Hany El-Assaly   +3 more
doaj   +1 more source

Subtraction MRI versus diffusion weighted imaging: Which is more accurate in assessment of hepatocellular carcinoma after Trans Arterial Chemoembolization (TACE)?

open access: yesThe Egyptian Journal of Radiology and Nuclear Medicine, 2016
This study aims to compare the role of both subtraction MRI and Diffusion weighted images in assessment of HCC after trans-arterial chemo embolization (TACE). Patients and methods: 32 patients having 54 HCC lesions underwent TACE.
Noha Abd ElShafy ElSaid   +3 more
doaj   +1 more source

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