Abstracts - faqs.org

Abstracts

Zoology and wildlife conservation

Search abstracts:
Abstracts » Zoology and wildlife conservation

Synthesis of nuclei of the superheavy element 114 in reactions induced by (super48)Ca

Article Abstract:

It has been shown that neutron-rich nuclei with N > 168 can be synthesized in fusion reactions using heavy isotopes of uranium, plutonium and curium and a (super48)Ca ion beam. The synthesis of an isotope having 114 protons and 173 neutrons has been undertaken, via fusion of intense beams of (super48)Ca ions with (super242)Pu targets. The new isotope (super287)114 has a half life several times shorter than the heavier isotope (super289)114.

Author: Hofmann, S., Morita, K., Chepigin, V.I., Itkis, M.G., Malyshev, O.N., Oganessian, Yu. Ts., Yremin, A.V., Popeko, A.G., Bogomolov, S.L., Buklanov, G.V., Chelnokov, M.L., Gikal, B.N., Gorshkov,V.A., Gulbekian, G.G., Kabachenko, A.P., Lavrentev,A. Yu., Rohac, J., Sagaidak, R.N., Saro,S., Giardina, G.
Publisher: Macmillan Publishing Ltd.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1999
Isotopes, Nuclides

User Contributions:

Comment about this article or add new information about this topic:

CAPTCHA

A new pathway for polyketide synthesis in microorganisms

Article Abstract:

A homodimer of Rppa is found to catalyze polyketide synthesis, by selecting malonyl-coenzyme-A and undertaking four successive extensions, releasing pentaketide to cyclize to 1,3,6,8-tetrahydroxynaphthalene (THN). A cysteine residue was found to be necessary for enzyme activity. THN formed by RppA seems to be an intermediate in biosynthetic pathways for melanins and other secondary metabolites containing a naphthoquinone ring.

Author: Fujii, Isao, Ebizuka, Yutaka, Horinouchi, Sueharu, Ohnishi, Yasuo, Funa, Nobutaka, Shibuya, Masaaki
Publisher: Macmillan Publishing Ltd.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1999
Biosynthesis, Plant metabolites

User Contributions:

Comment about this article or add new information about this topic:

CAPTCHA


Subjects list: Research
Similar abstracts:
  • Abstracts: Acid rain not only to blame. Role for heavy metals in forest decline indicated by phytochelatin measurements. Valuation of consumption and sale of forest goods from a Central American rain forest
  • Abstracts: Alternative ways of meeting demand. Remote measurements of volcanic gas compositions by solar occultation spectroscopy
  • Abstracts: Using hair to screen for breast cancer. Papillomavirus and p53
  • Abstracts: A biologist's perspective on the role of sustainable harvest in conservation. Community conservation and the future of Africa's wildlife
  • Abstracts: Inference methods for spatial variation in species richness and community composition when not all species are detected. part 2
This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.
Some parts © 2015 Advameg, Inc.