A. L. Miller National Institute for Occupational Safety and Health/ Spokane Research Lab, Spokane, WA 99207, USA Abstract A hygroscopicity tandem differential mobility analyzer (HTDMA) technique is used to determine size-effect of nanoparticles (NaCl, (NH4)2 SO4, KCl, NH4NO3, MgCl2, CaCl2) on their hygro­ scopic properties (deliquescence relative humidity (DRH) and hygroscopic growth factor (GF...

I measured the rate of elongation at the barbed and pointed ends of actin filaments by electron microscopy with Limulus sperm acrosomal processes as nuclei. With improvements in the mechanics of the assay, it was possible to measure growth rates from 0.05 to 280 s-1. At 22 degrees C in 1 mM MgCl2, 10 mM imidazole (pH 7), 0.2 mM ATP with 1 mM EGTA or 50 microM CaCl2 or with EGTA and 50 mM KCl, t...

Hundred samples were collected from different clinical source. Sixty isolates identified asStaphylococcus aureus. The ability of S. aureus to produce DNase was examined phenotypically on DNaseagar medium and also by quantitative assay that revealed only 37(66%) able producethe enzyme. extracted, the crude activity specific 38 (U/ml) 253.3(U/mg)respectively. enzyme purified precipitating with am...

introduction: abusing drugs such as morphine continues to be a serious medical and social problem. defining a habit that increases the devastating effect such as compulsive use and craving is necessary. methods: this experiment was designed in four groups 1) group-housed (gh) 2) isolation 3) group-housed morphine-treated (ghmt) (4) isolated-housed morphine-treated (ihmt). rats were received mor...

Migration of dissolved salts from natural (cryopeg brines, seawater, etc.), or artificial sources can destabilize intrapermafrost gas hydrates. Salt transport patterns vary as a function pressure, temperature, salinity, etc. The sensitivity the salt migration and hydrate dissociation processes to ambient temperature concentration chemistry saline solutions is investigated experimentally on froz...

The catalytic pyrolysis of beech wood and corncob was experimentally investigated considering six additives containing alkali alkaline earth metals (Na2CO3, NaOH, NaCl, KCl, CaCl2 MgCl2). Thermogravimetric analyses (TGA) were carried out with raw feedstocks samples impregnated different concentrations catalysts. In a bid to better interpret observed trends, measured data analyzed using an integ...

Ni-based superalloys are promising materials for high-temperature molten salt (MS) energy generation and storage. Studying morphological chemical evolution of pure Ni in MS provides fundamental knowledge technologies corrosion mitigation. Here, real-time 3D changes microparticles KCl-MgCl2 were studied by operando synchrotron X-ray nano-tomography at 700°C. Rapid particle agglomeration occurred...