منابع مشابه
Poxvirus Viability and Signatures in Historical Relics
Although it has been >30 years since the eradication of smallpox, the unearthing of well-preserved tissue material in which the virus may reside has called into question the viability of variola virus decades or centuries after its original occurrence. Experimental data to address the long-term stability and viability of the virus are limited. There are several instances of well-preserved corps...
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Superstring theory predicts the existence of relic metastable particles whose average lifetime is longer than the age of the universe and which could, in principle, be good dark matter candidates. At the same time, these states would be responsible for the Ultra High Energy Cosmic Rays (UHECR) events which will be searched for by various experimental collaborations in the near future. We descri...
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A number of small RNA sequences, located in different non-coding sequences and highly preserved across the tree of life, have been suggested to be molecular fossils, of ancient (and possibly primordial) origin. On the other hand, recent years have revealed the existence of ubiquitous roles for small RNA sequences in modern organisms, in functions ranging from cell regulation to antiviral activi...
متن کاملRelics of the Antarctic tundra
Many viruses have capsids that are icosahedra: 20-sided nearspheres with triangular faces. Chuan Zhang et al. have created icosahedra consisting purely of DNA, which self-assemble from five-pointed molecular tiles. The authors’ previous research with three-pointed tiles showed that triangular faces make extremely stable building blocks. In the present work, they designed fivepointed tiles using...
متن کاملRelics of Double Radio Sources
We have formed a new sample which consists of extended extragalactic radio sources without obvious active galactic nuclei (AGN) in them. Most of these sources appear to be dead double radio sources. These sources with steep spectra (α < -1.8; S ∝ ν) were identified using the 74 (VLSS) and the 1400 MHz (NVSS) surveys and further imaged using the Very Large Array (VLA) and the Giant Meterwave Rad...
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ژورنال
عنوان ژورنال: Journal of the History of Collections
سال: 2018
ISSN: 0954-6650,1477-8564
DOI: 10.1093/jhc/fhy038