Search Results

You are looking at 1 - 10 of 97 items for :

  • Refine by Access: All Content x
Clear All

Egészséghasznosság-mérés időalku módszerrel Magyarországon

Health utility measurement by time trade-off method in Hungary

Orvosi Hetilap
Authors: Péter György Balázs, Valentin Brodszky, and Fanni Rencz

health benefits for economic evaluation. 2nd edn. Oxford University Press, 2016. 6 Weinstein MC, Torrance G, McGuire A. QALYs: the basics. Value Health

Open access

Abstract  

A quality check for an automated system of analyzing large sets of neutron activated samples has been developed. Activated samples are counted with an HPGe detector, in conjunction with an automated sample changer and spectral analysis tools, controlled by the Canberra GENIE 2K and REXX software. After each sample is acquired and analyzed, a Microsoft Visual Basic program imports the results into a template Microsoft Excel file where the final concentrations, uncertainties, and detection limits are determined. Standard reference materials are included in each set of 40 samples as a standard quality assurance/quality control (QA/QC) test. A select group of sample spectra are also visually reviewed to check the peak fitting routines. A reference spectrum was generated in MCNP 4c2 using an F8, pulse-height, tally with a detector model of the actual detector used in counting. The detector model matches the detector resolution, energy calibration, and counting geometry. The generated spectrum also contained a radioisotope matrix that was similar to what was expected in the samples. This spectrum can then be put through the automated system and analyzed along with the other samples. The automated results are then compared to expected results for QA/QC assurance.

Restricted access

In the present paper we will examine a number of graphotactic rules which emerge from an analysis of several graphemic alternations, observed in a delimited Turkic text corpus in Brāhm-i script. This analysis will lead us to propose a possible reconstruction of the phonemic dorsal system denoted by the linguistic domain here considered: such a system is intended to be effective exclusively within this specific domain. In particular, we will examine the graphophonemic status of the akṣaras usually transcribed as ‹qa› and ‹g1a› within the Northwestern Brāhmī script system, as they occur both in Tokharian and Turkic scribal practice. Though our primary goal is the consistency of the proposed reconstruction, rather than its historical soundness, we will eventually argue that, within the dorsal system here described, no ‘voiced’–‘voiceless’ opposition is retrievable.

Restricted access
Journal of Radioanalytical and Nuclear Chemistry
Authors: R. M. Lindstrom, M. Blaauw, and M. P. Unterweger

Summary  

Methods developed to redetermine the 76As half-life were applied to four additional radionuclides. Several gamma-spectrometers were used to follow the decay of pure sources during 4-14 half-lives, comparing with a pulser stable to better than 2 . 10-8 per day. Complementary measurements (also for 76As) employed a pressurized ion chamber. Several least-squares methods were used to derive the best value of each decay constant. We find the half-lives to be 14.959±0.009 hours for 24Na, 12.339±0.011 hours for 42K, and 2.6924±0.0011 days for 198Au, where the uncertainties are the combined standard uncertainty u.

Restricted access

Abstract  

A database has been designed for storing, retrieving and analyzing information about samples, experimental conditions and results obtained by neutron activation analysis and gamma-ray spectrometry. It has been created using Microsoft ACCESS 2002 under a Windows operating system. The database has been designed not only for saving information but also for quality assurance and quality control purposes. The structure of the relational design has been discussed and demonstrated with a new graphical feature of ACCESS 2002 called PIVOTCHART.

Restricted access

Summary

This contribution focuses on domain-specific multilingual structured content (including terminology). In eApplications, such as eBusiness, eHealth, eLearning, etc., terminology today is mostly embedded in or combined with other kinds of content (most frequently occurring in specialized texts) – increasingly, however, occurring in combination with other kinds of structured content. In order to make the development of structured content less expensive (because of its labour-intensiveness), new methods for web-based, distributed, cooperative creation of structured content (and the respective workflow management) are needed.

This adds a new dimension to technical and other kinds of interoperability: content interoperability, a fundamental requirement for achieving the aims of the semantic web. ISO/TC 37 “Terminology and other language and content resources” is gradually moving into this area, bringing in its competence and experience with the data modelling of multilingual terminological data and other language resources (LRs) from the point of view of ‘content’ as seen by domain experts.

A new generation of content repositories, such as the ISO Concept DataBase (ISO/CDB), the DIN Properties Dictionary and the eCl@ss multilingual product classification are important developments in the direction outlined above. They are based on international standards, which will also pave the way for new kinds of certification and quality management in the enterprise.

Restricted access

Abstract  

Cellulose cylinders and circular filter papers spiked with known amounts of standard element solutions were prepared for studying some aspects of assessing measurement uncertainty of NAA and the elemental distribution measured by micro-PIXE analysis. Results for the cylinders showed strongly non-homogeneous distribution of the elements, both in radial and vertical directions, dominantly caused by osmosis driven transport of added liquid solution from the centre to the edges. Results for the thin cellulose filter paper disks exhibited weaker peaking of the standard element concentrations at the edges in comparison with the thick cylinders.

Restricted access

Abstract  

Three new synthetic multi-element standards (SMELS) were developed for testing the performance of the k 0-standardization neutron activation analysis (k 0-NAA) method when implemented in a laboratory. SMELS consist of a phenol-formaldehyde polymer matrix spiked with different groups of elements according to the half-lives of the formed radionuclides. They are classified as Type I for short-, Type II for medium- and Type III for long-lived radionuclides. This article presents the preparation of SMELS including different aspects such as choice of the matrix and spiking elements, chemical compounds, target concentrations, purity of the matrix and spiking procedure and the homogeneity study for all the spiked elements in order to demonstrate the quality of the produced materials.

Restricted access

1 Introduction This study deals with the treatment of initial geminates as non-actual surface forms in light of Parallel OT as an analytical framework. It focuses on the case of Qassimi Arabic (QA), a Najdi dialect spoken in the Al-Qassim region in

Restricted access