the Portrait of Theresia Brunswick in the oldest documentation book of museum. This book was written by historian Ovídius Faust (1896–1972), who worked in the museum from 1953 till 1970 .
12. More about
The analysis of impurities in uranium matrices is performed in a variety of fields, e.g., for quality control in the production
stream converting uranium ores to fuels, as element signatures in nuclear forensics and safeguards, and for non-proliferation
control. We have investigated the capabilities of time-of-flight ICP-MS for the analysis of impurities in uranium matrices
using a matrix-matched method. The method was applied to the New Brunswick Laboratory CRM 124(1–7) series. For the seven certified
reference materials, an overall precision and accuracy of approximately 5% and 14%, respectively, were obtained for 18 analyzed
A series of measurements were carried out to establish the reliability associated with isotope ratio (235/238) measurements on uranium samples using a quadrupole inductively coupled plasma mass spectrometer (ICPMS). Figures of merit related to the isotopic measurements were determined using non certified as well as certified materials provided by the New Brunswick Laboratory (NBL). The experimental results showed that repeatability is around 0.5% while reproducibility was calculated as 0.27%. Mass discrimination was determined as 0.03% per mass unit and the system linearity check over five orders of isotope ratios yielded a mass discrimination factor (K factor) of 1.0002±0.0081 (0.81%, 2s). The mean error of measurement obtained from six different certified reference materials was 0.77%.
An analytical procedure was developed to determine the concentration of some elements regarded as trace impurities in nuclear fuel using inductively coupled plasma mass spectrometry (ICPMS) associated to the matrix matching method. The assessment of this approach was carried out using a set of certified reference materials produced by the New Brunswick Laboratory (NBL). Eighteen out of the twenty-four elements in the reference materials could be easily determined. It was found that the mean values for reproducibility and accuracy were 5.0% and 15.0%. The remaining six elements provided mean values of 11.0% and 37.0%, respectively. They could not be adequately determined due to the effects of analyte signal suppression and spectral interference.
From the former Hungarian collections of the Princes Esterházy and of Count János Pállfy a greater number of Giordano paintings entered the Museum of Fine Arts Budapest. Beside that the Christian Museum Esztergom possesses several paintings of Giordano from the Capece Zurlo di San Marco collection. The paper deals with the iconography and authenticity of Justice disarmed, and Venus and Adonis. The former is an allegory on the loss of Crete in 1669 and the unjust peace between Venice and Turkey. The latter shows the influence of Cambiaso drawings. A further source of Giordanos is the former Brunswick collection. The painting Joseph and Potiphar's Wife attributed to Giuseppe Signorelli allows assuring a lost canvas painted by Giordano of the same topic. Only Desplaces has engraved it. Several paintings published in the paper were attributed to Giordano, respective to his pupils. Giordano's or his workshop's copies after Ribera were presented in a catalogue. The same was done with the copies after Giordano.
Authors:B. Srinivasan, K. Mathew, U. Narayanan, W. Guthrie, and T. Sampson
The calorimetry exchange (CALEX) program is administered by New Brunswick Laboratory (NBL). The main objective of the program
is to provide an independent verification of the internal quality control practices in nuclear material safeguards facilities
making plutonium accountability measurements by non-destructive calorimetry/gamma spectrometry techniques. Facilities measure
the calorimetric power, and plutonium and 241Am isotope abundances of CALEX program standards using routine accountability procedures. The measurement results as well
as two other quantities (effective specific power and plutonium mass) calculated from these results are evaluated for accuracy
(or bias) and precision. In this paper, a limited number of measurement results of a CALEX program standard (identified as
Calex I) are evaluated with specific goals to identify a suitable method for uncertainty estimation and to identify the major
contributors to the uncertainties. In order to achieve the goals, the Calex I measurement results were evaluated using two
different methods: the first method confined to uncertainty estimation from random variations of the measurement results alone,
and the second method providing a more comprehensive evaluation of uncertainties from both the measurements and the characterized
values of the measured standard according to the Guide to the Expression of Uncertainty in Measurement (GUM). The results
of this study, and a subsequent study extended to a larger number of results in the CALEX program database, are expected to
provide relevant input for developing the International Target Values for plutonium measurements by the calorimetry/gamma
Authors:S. Bürger, K. Mathew, P. Mason, and U. Narayanan
The characterized concentrations of 24 impurity elements in New Brunswick Laboratory (NBL) Certified Reference Material (CRM)
124 were reevaluated. A provisional certificate of analysis was issued in September 1983 based upon the “as prepared” values
(gravimetric mixing). The provisional certificate does not state uncertainties for the characterized values, or estimate the
degree of homogeneity. Since release of the provisional certificate of analysis various laboratories have reported analytical
results for CRM 124. Based upon the reported data a re-evaluation of the characterized values with an estimate of their uncertainties
was performed in this work. An assessment of the degree of homogeneity was included. The overall difference between the re-evaluated
values for the 24 impurity elements and the “as prepared” values from the provisional certificate of analysis is negligible
compared to the uncertainties. Therefore, NBL will establish the “as prepared” values as the certified values and use the
derived uncertainties from this work for the uncertainties of the certified values. The traceability of the “as prepared”
values was established by the gravimetric mixing procedure employed during the preparation of the CRM. NBL further recommends
a minimum sample size of 1 g of the CRM material to ensure homogeneity. Samples should be dried by heating up to 110 °C for
one hour before use.