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We read with interest the report by Holmsen and Leasure (1) in which they reported the growth-inhibiting property of tris(1-aziridinyl)phosphine oxide (APO) on grasses. We feel that one of the most important biological properties of the chemical was not mentioned in the report, namely, the ability to induce mutations. Indeed APO is a powerful mutagen; APO (or triethylenephosphoramide, TEPA) pro...

PURPOSE To evaluate the correlation between Armaly's structural systems with Brusini's functional staging in glaucomatous patients. METHODS Seventy-eight eyes of forty-two patients with primary open-angle glaucoma underwent visual field testing with the Humphrey Field Analyzer II (program SITA 24-2) and optic disc evaluation with the 78D Volk lens by two independent observers. Optic disc was ...

Spirit: The Spirit rover at Gusev Crater traversed across 7.7 km over an operating lifetime of 2210 sols and analyzed with its APXS approximately 225 distinct targets. Fig. 1 depicts Mg/Si versus Al/Si for all the Gusev samples. A circular reference zone is plotted to represent an approximate average Mars crustal composition and the dashed lines bound the expected values for unaltered martian i...

in this paper we intend to generate some set of optimal trajectories according to the number of control points has been applied for parameterizing those using b-spline curves. the trajectories are used to generate an optimal locomotion gait in a crawling worm-like robot. due to gait design considerations it is desired to minimize the required torques in a cycle of gait. similar to caterpillars,...

The frequency-dependent characteristics of microstrip planar circuits have been previously analyzed using several full-wave approaches. All those methods directly give characteristic of the circuits frequency by frequency. Computation time becomes important if these planar circuits have to be studied over a very large bandwidth. The transmission line matrix (TLM) method presented in this paper ...

This paper describes the physical meaning of MS norm (=MS/V1/3), unitless grain size normalized integral mean curvature faces, as a descriptor effect face number on shape, affecting boundary velocity in driven growth. has consistently been found to have linear relationship with class, f, among diverse experiments real materials and simulations. Analysis terms effects faces its components, avera...

The influence of rotation on the thermal vibrational convection liquid in a horizontal plane layer is studied experimentally. excited by vibrations circular polarization plane. research carried out heated from above, under conditions strong stabilizing effect gravity. In this case, at relatively high intensity and manifests itself development short-wavelength convective structures form beads. I...