It is a prime aim to ensure a suitable comfort level in case of office buildings. The productivity of office employees is directly influenced by the comfort. Thermal discomfort and poor indoor air quality deteriorate the intensity and quality of human work. We investigated the comfort in office buildings with on-site measurements during the summer season. The office buildings were operating with different HVAC (Heating, Ventilating and Air-Conditioning) systems: ducted fan-coil with suspended ceiling, installation, non-ducted fan-coil with floor-mounted installation, active chilled beam with fresh air supply.
We evaluated the thermal comfort under PMV (Predicted Mean Vote), PPD (Predicted Percentage of Dissatisfied), the local discomfort based on DR (Draught Rate) and the IAQ (Indoor Air Quality) based on carbon dioxide concentration. The comfort measurements were evaluated. The measurements were evaluated with scientific research methods, comfort categories based on the requirements of CR 1752. The results of this comparison were presented in this article.
A debate has occurred recently over the issue whether it is possible to account for differences in results when using various versions of theScience Citation Index for the measurement of national performance in terms of numbers of scientific publications. This article provides an overview of the various arguments which have been made, and reports that recent reorganization in the on-line installations (SciSearch) should make it possible to circumvene one of the major sources of error.
Authors:Ch. Berthelot, G. Carraro, and V. Verdingh
An installation for photon activation analysis recently completed at CBNM, Geel, is described. Synthetic standards prepared
from pure graphite are used for the non-destructive determination of lanthanides in boron carbide. The induced activities
of153Sm,152mEu,159Gd and157Dy were measured using a single open-ended coaxial Ge(Li) detector and the photopeak areas were calculated using the GAFIT
program. For the irradiation parameters used, the limits of detection are communicated.
The text deals with the work of Jana Želibská (1941 Olomouc) — flanêuse in the 1960s and the priestess of the Great Mother (Nature) in the 1970s. Želibská took a central position among male protagonists of neo-avant-garde in Slovakia. Her approach has been labeled ‘latent feminism’ because no real feminist platform existed during socialism in Slovakia. Želibská used the language of pop art and New Realism and their iconography mixed with the local folklore motifs in a quite different way. Pop art and New Realism entered the oeuvre of many artists simultaneously with experiments in conceptual art (Stano Filko, Peter Bartoš, Július Koller, Jana Želibská). After 1968, Želibská shifted the focus of her activities to land as an open structure outside of official supervision. Želibská made several statements regarding experiencing the magic of the present moment and experience with landscape through concepts and events that emphasized connection with nature. Photography helped her to work with continuity and causality in photo-sequences of situations and events. The path through ‘rooms of her own’ and other spatial concepts from the female labyrinth to the architecture of the temple in the 1960s, through changing open structures outdoors in her concept and land art in the 1970s, photography in 1980s, reached installation and video in the 1990s. Installations in the 1980s were built mainly on the artist’s experience with and in nature, or on the typical postmodernist contrast of the urban and natural. Puberty and virginity, which interested her in the land art events in 1970s, appeared again in her video art in a monumental demonstration of ‘girl power.’ In 1997 Želibská took the position behind the camera, shooting a naked male body without identity and face in the video installation Her View of Him. Thus she completed her shift from the ‘girl power’ of the 1960s and early 1970s agenda to fully articulated ‘woman power’.
Authors:R. Lindstrom, R. Zeisler, E. Mackey, P. Liposky, R. Popelka-Filcoff, and R. Williams
For accurate activation analysis, it is necessary to understand the neutron and gamma-ray environment experienced by a sample
during irradiation. A new irradiation position was recently installed in the RT2 thimble of the NIST reactor. Modeling by
MCNP was used to select the radial location in the reflector thimble and the size of the D2O shielding tank. After installation, the new rabbit was characterized for thermal, epithermal, and fast fluence rates, spectral
parameters f and α, temporal stability, axial and radial flux gradients, and temperature.
The past quarter of a century has seen considerable improvement in time resolution for pulse radiolysis and laser photolysis experiments, made possible by advanced excitation sources. To document the present status, three installations for pulse radiolysis are discussed: a picosecond linac (Tokyo), a nanosecond Van de Graaff (Delft), and a high current accelerator (ód). Also indicated are future experimental possibilities, in particular the use of a high current photoemission electron gun. Available lasers for excitation with nanosecond pulses are summarized and a picosecond facility which permits optical and conductivity observations with subnanosecond time resolution is described.
Authors:R. Dewberry, D. Williams, R. Lee, D. Roberts, L. Arrigo, and S. Salaymeh
In this paper, the setup, calibration, and testing of the F-Area Analytical Labs active well neutron coincidence counter (HV-221000-NDA-X-1-DK-AWCC-1)
in SRNL are described for use in the Savannah River Site (SRS) transuranium metal production facility to enable assay of mixed
uranium/plutonium metal product. The instrument was required within a three-month window for availability upon receipt of
LANL uranium oxide samples into the SRS facility. Calibration of the instrument in the SRNL nuclear nondestructive assay facility
in the range 10–400 g HEU is described. We also report qualification and installation of the instrument for assay of the initial
suite of product samples.
Authors:K. Szabó, L. Nagy, G. Török, D. Hegedüs, and G. Fóti
A control system for monitoring the radioactive concentration in aqueous wastes of nuclear installations was elaborated. The
mobile station developed for in situ control enables simultaneous measurement of gamma radiation in the energy range of 0.15–2.0
MeV and that of beta radiation in the energy range of 0.3–2.0 MeV by means of a combined scintillation detector. Disturbing
effects of accompanying and secundary radiations on the determination of the counting efficiency vs. radiation energy functions
used in calculation of the radioactive concentration limits as well as some experiences during a long time of operation of
the system have been discussed.
A complete series of measurements have been performed in the thermal neutron beam at the Budapest Research Reactor to determine the prompt k0 factors for every stable element. After the installation of the cold neutron source, the flux of the beam increased by more than an order of magnitude, which made possible to determine the k0 and cross-section values having low cross-sections with a better accuracy. The paper presents the new data for the first set of low-cross-section elements and they are compared to the best literature data.
The Pacific Northwest National Laboratory is working with US Customs and Border Protection to assist in the installation of
radiation portal monitors. Our challenge was to provide radioactive sources—both gamma and neutron emitting, to a number of
ports of entry where radiation portal monitors are being installed and calibrated. A portable shipping case has been designed
such that it meets the DOT requirements for a “limited quantity” shipment. Over three hundred shipments, both domestic and
international, were made in FY2008 using this type of shipping case.