Human hair powder reference material was prepared and certified for elemental composition. Human scalp hair (from Japanese men) was washed in a non-ionic detergent solution in an ultrasonic cleaner, dried, ground in an agate ball mill, sieved through a polyethylene net, blended, bottled (1100 vials, 2 g each), and finally sterilized by 60Co radiation. The prepared material satisfied the homogen...

This review article focuses on our recent studies on novel soft materials consisting of carbon nanotubes. Single-walled carbon nanotubes, when suspended in imidazolium ion-based ionic liquids and ground in an agate mortar, form physical gels (bucky gels), where heavily entangled bundles of carbon nanotubes are exfoliated to give highly dispersed, much finer bundles. By using bucky gels, the fir...

We have derived an analytical expression in the wavenumber domain for calculating the gravity anomaly caused by an exponential density contrast model for an interface (Xia and Sprowl, 1990), above which the density contrast changes exponentially with depth. Constant density contrast and a linear density contrast are specific cases of the exponential density contrast model. The formula should be...

Abstract The article describes the establishment of location agate geodes using GPR method in area Simota gully (Lesser Poland Voivodeship). Agates (a multicolored variety gemstone chalcedony group) have multifaceted values that informed their study. Traditional methods geode are less reliable, hence attempt to use method. Measurements were taken at two study test sites with subsurface geology ...

Transmission line failure in power systems prop-agate non-locally, making the control of resulting outages extremely difficult. In Part II this paper, we continue study localizability transmission networks and characterize impact cut set outages. We establish a Simple Path Criterion, showing that propagation pattern due to bridge outages, special case failures, are fully determined by positions...

Herman Helmholz had his pupil Zahnz construct a filter out of a porous porcelain cylinder, and this form of apparatus was also used by Kehrer.3 Hermann modified Zahn’s method and used powdered porous plate to adsorb the casein. Tiemann, however, several years later made extensive use of a method devised by Lehmann,c in which the milk was placed upon a slightly concave, porous plate, whose surfa...

The effect of Fe2O3 crystal phases on their performance in CO2 hydrogenation was studied. α-Fe2O3 crystal was prepared by precipitation method from Fe(NO3)3·9H2O and (NH4)2CO3, and γ-Fe2O3 was prepared by grinding Fe(NO3)3·9H2O and L(+)-Tartaric acid in agate mortar completely. The crystal phases of Fe2O3 influence the distribution of promoter Zn, K and Cu on catalysts. The dispersity of K on γ...