Two sets of smoky glass doors slide open automatically, widening onto a blank corridor of sterile linoleum. The walls are nondescript, with overhead fluorescent lights and painted arrows on the floor. The sounds are a combination of crying, laughing, talking, machinery, beepers, Muzak®, loudspeakers, all mixed together with an ominous silence. Upon entering the aloneness of the hospital room, t...

One of the main sources pollution in indoor environments is human walking-induced particle resuspension. In this work, airflow and resuspension particles smaller than 1 ?m generated by foot tapping were investigated numerically using ANSYS CFX software. The k-? shear stress transport model was considered to simulate unsteady field around under shoe. immersed solid method then used incorporate s...

UNLABELLED Emissions of volatile organic compounds (VOC) and semivolatile organic compounds (SVOC) from materials for flooring installation (primer, screed, adhesive, floor covering) were measured by means of emission test chambers and cells over a time period of at least 28 days at 23 degrees C, 50% relative humidity and an area specific air flow rate of q = 1.25 m(3)/m(2) h. Single components...

Zbadano handlowe dodatki uniepalniające na bazie Sb2O3. Wykazują one działanie akceptorowe, termostabilizujące i linoleum z PVC. Na podstawie spektroskopii IR, analizy DTA, dyfrakcji oraz fluorescencji rentgenowskiej stwierdzono, że jedna próbek zawiera 100% Sb2O3, natomiast pozostałe zawierają mikrokrystaliczny CaCO3 (50-95%) inne związki np. chloroorganiczne węglowodory. Mechanizm uniepalnian...

We describe in this paper a context-free grammar, with parameters, that generate models for covering a rectangular area with many smaller rectangular pieces. The generated language contains all the models that can be generated using only guillotine restrictions. The grammar was inspired by the practical problem of covering a rectangular room with carpet or linoleum. The source of rectangular pi...

The magnitude and distribution of cypermethrin from total release, over-the-counter foggers was studied in a test room and in residences to facilitate evaluation of regulatory exposure algorithms and new human exposure assessments based upon urine biomonitoring. Surface residue (SR) was evenly distributed in a small test room (3.6 mciro g cypermethrin/cm(2)) where thorough mixing of the aerosol...

The vibratory behavior of a lab facility located in Building 401 of the Advanced Photon Source site at Argonne National Laboratory is summarized. Measurements of ambient vibration indicate that acceptable displacement levels are usually maintained (rms value below 0.1 microns) for the measured frequency range, above 0.2 Hz. An exception occurs when strong wind conditions excite a horizontal bui...