Observations of (80) Sappho

The Victorian construction of Sappho, 1835-1914

Sappho was an ancient Greek lyric poet writing on the isle if Lesbos in the seventh century BC. Her original works were contained in seven books; however, only a few fragments are extant. These fragments are mainly about women and are erotic in nature. Considering the homoerotic tone of Sappho's poetry, it is interesting that the Victorians were fascinated with her and a proliferation of biogra...

Luminous Phenomena of Earthquakes: Observations and Theories

Over the past few years, different theories (piezoelectric, positive holes, friction-vaporization, exo-electron emission, tribo- or fracture electrification) have been presented for the interpretation of earthquake lights. Although these theories can interpret earthquake luminous, each suffer from particular problems. There are also ambiguities and questions about the location of the light, the...

Electron Microscope Observations on Compound 48/80-induced Degranulation in Rat Mast Cells

In vitro degranulation of rat mast cells was studied at different intervals ranging from 10 to 60 sec after adding the histamine liberator, compound 48/80 (0.4 microg/ml, 17 degrees C). The ultrastructural changes were followed by electron microscopy, and parallel assays were made to determine the histamine released. In addition, the extracellular tracers lanthanum and hemoglobin (demonstrated ...

Seismology of solar spicules based on Hinode/SOT observations

Biclique cryptanalysis of MIBS-80 and PRESENT-80 block ciphers

In this paper we present the first biclique cryptanalysis of MIBS block cipher and a new biclique cryptanalysis of PRESENT block cipher. These attacks are performed on full-round MIBS-80 and full-round PRESENT-80. Attack on MIBS80 uses matching without matrix method and has a data complexity upper bounded by 252 chosen plaintext where it reduced security of this cipher about 1 bit. Attack on PR...