The high-temperature/high-pressure treatment of the K-Te-U oxo-family at 1100 °C and 3.5 GPa results in the crystallization of a series of novel uranyl tellurium compounds, K2[(UO2)3(TeIVO3)4], K2[(UO2)TeO14], α-K2[(UO2)TeVIO5] and β-K2[(UO2)TeVIO5]. In contrast to most of the reported uranyl compounds which are favorable in layered structures, we found that under extreme conditions, the potass...

the interaction between the solar wind and the earth’s magnetosphere results in the transport of magnetic flux into the magnetotail and to avoid a continued buildup in the tail, there is a return convection of magnetic flux from the magnetotail into the night-side dipole-like region and from there to the day-side. since there is energetic plasma with this magnetic flux, hence electric currents ...

Low irra(liances of 254 nm UV photoreversibly interfere with the capacity of plant cells properly to tutilize auixin for cell division, enlargement and (lifferentiationi (3,8,17). This UV-induced auixinrecalcitrance does not seem to be caused by activation of aulxin oxidase or by alteration of auxin metal)olism, penetration, or translocation. In view of the role of nucleic acid and protein meta...

A new mitomycin C (MM(Z)-sensitive rodent line, UV40. has been identified in the collection of ultraviolet light(UV-) sensitive mutants of Chinese hamster ovary (CHO) cells isolated at the previous Facility for Automated Experiments in Cell Biology (FAECB). It was isolated from an UV mutant hunt using mutagenesis of AA8 cells with the DNA intercalating frameshift mutagen ICR 170. It is compleme...

The shock arrival of an Interplanetary Coronal Mass Ejection (ICME) at ∼09:50 UT on 22 November 1997 resulted in the development of an intense (Dst<−100 nT) geomagnetic storm at Earth. In the early, quiet phase of the storm, in the sheath region of the ICME, an unusual large spiral structure (diameter of∼1000 km) was observed at very high latitudes by the Polar UVI instrument. The evolution of ...

&lt;p&gt;&lt;strong&gt;Objetivo:&lt;/strong&gt; analizar las “huellas” que ha dejado la pedagogía crítica de Paulo Freire en educación intercultural. Tomamos como referentes empíricos dos regiones indígenas plurilingües: el Departamento del Cauca Colombia y Estado Veracruz México. Nos preguntamos qué presencia tiene entre los protagonistas crean Universidad Autónoma Indígena Intercultural (UAII...