Zirconium and hafnium are shown to be separable using 2-octanol (C8H18O) as an extractant.Zirconium basic carbonate was dissolved using hydrochloric acids at concentrations ranging from 5 % to 20 %.Potassium fluoride was found to be crucial to the process.Its effect was investigated in the concentration range of 1 M to 3 M.The optimum conditions ob
A new measure for the strength of electrical synapses
Electrical synapses, like Sensory Tools chemical synapses, mediate intraneuronal communication.Electrical synapses are typically quantified by subthreshold measurements of coupling, which fall short in describing their impact on spiking activity in coupled neighbors.Here we describe a novel measurement for electrical synapse strength that directly
Numerous retinal pigment epithelial elevations and drusen associated with unusual dilated choroidal vessels seen at choriocapillaris level in macular area
Purpose: To report the ocular findings in a patient with extensive diffuse elevations of the retinal pigment epithelium (RPE) and drusen associated with dilated choroidal vessels.Observations: The eye of a 72-year-old woman with numerous drusen and dilated choroidal vessels in the macular and surrounding areas of the right eye was studied.Her visua
MODIFICATIONS OF THE MIDDLE ATMOSPHERE CONDUCTIVITY DURING SUDDEN IONOSPHERE DISTURBANCES AND VARIATIONS OF SCHUMANN RESONANCE FREQUENCIES
The investigation of the effect of space weather on different layers of the terrestrial atmosphere has been and remains a relevant problem of remote sensing of the environment.We describe a technique for detecting modifications of the peak frequencies of the Schumann resonance during the sudden ionospheric disturbances (SID) caused by the solar X-r