Titlebook: Origin and Evolution of Interplanetary Dust; Proceedings of the 1 A. C. Levasseur-Regourd,H. Hasegawa Conference proceedings 1991 Springer

神圣不可

The NASA Solar Probe Mission: In Situ Determination of Interplanetary Out-of-the Ecliptic and Near-Sore revolutions, mapping out a complete solar cycle. Because the near-solar dust environment is not well understood (or is controversial at best), and it is very important to have better knowledge of the dust environment to protect Solar Probe from high velocity dust hits, we urgently request the sc

Stagger

Dissonance

Osteons

單純

多節(jié)

A Cosmic Matter Accretion Event Around 660,000 Years Before Present Found in Two Dated, Central Pacital cores have been searched by many scientists. In this work, Iridium contents and the ratios of (Co/Fe) in two dated, respective layers of the cores are determined. These samples were dated fortunately with the paleo-magnetic and also with the cosmogenic Be-10 methods. Ir enrichments are found at (0.660 ± 0.030) My before present.

Hemoptysis

Preliminary Study on Neogene Microtektites in the Core Collected from North Pacifice of core, we called this zone is miicrotektite layer. The age of sediments concentrated microtektites is from the Pliocene to the Pleistocene epoch. Research results indicate that these microtektites are similar to the North American tektites and the Australasian tektites, but they have the unique property on the chemistry.

Commentary

The Effect of Total Pressure on Vaporization of Alkalis from Partially Molten Chondritic Materialts were carried out under various He gas pressures (～10.-～10.torr) at 1300°C. The rate of vaporization decreased in the order of Na ? K ? Rb with the increasing of the pressure, and reached a minimum at ～10.torr.

Arboreal

Ordeal

A Balloon-Borne Detector for Stratospheric Cosmic Dust DetectionThis paper introduces a kind of cosmic dust collecting technique anddescribes in detail the structure of the collector, the balloon-basket system and concerning experimental skill.