UNESCO chemical arms conference opens in Paris

نویسندگان

چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Joint ICSU Press/UNESCO Expert Conference on ELECTRONIC PUBLISHING IN SCIENCE UNESCO, Paris, 19-23 February 1996 Tools and Standards for Protection, Control and Presentation of Data: Rights Clearance and Technical Protection in an Electronic Environment

If creators and investors cannot earn a fair return, the inevitable result will be a dearth of quality material and a corresponding deluge of rubbish, because quality material is intrinsically costly to produce. Although the new technology is reducing some of the costs associated with producing good material, it is also bringing in new costs. It is much cheaper to produce quality text now than ...

متن کامل

Macroevolutionary chemical escalation in an ancient plant-herbivore arms race.

A central paradigm in the field of plant-herbivore interactions is that the diversity and complexity of secondary compounds in plants have intensified over evolutionary time, resulting in the great variety of secondary products that currently exists. Unfortunately, testing of this proposal has been very limited. We analyzed the volatile chemistry of 70 species of the tropical plant genus Burser...

متن کامل

Chemical composition and biological activity of Paris quadrifolia L.

A study of the components of Paris quadrifolia was undertaken to identify compounds with potential influence on cardiac cells, since previous reports suggested a cardiotoxic risk of this plant. Compounds isolated and identified included one new steroidal saponin, (23S,24S)-spirosta-5,25(27)-diene-1beta,3beta,21,23,24-pentol-1-O-beta-D-apiofuranosyl-(1-->3)-alpha-L-rhamnopyranosyl-(1-->2)-[beta-...

متن کامل

Eighth Asian Bioethics Conference (abc2007) Second Unesco Bangkok Bioethics Roundtable (bbrt2)

Distinguished dignitaries on the stage, honored experts in bioethics and techno sciences, ladies and gentlemen. I am happy to be present in this unique ABA conference. I would like to bring to your knowledge and concern some selected bioethical issues that are currently discussed in India. I perceive that these issues are also faced by all nations. Since all nations are concerned about the next...

متن کامل

Chemical Coevolution: Host–Parasite Arms Race Runs Hot and Cold

Coevolution is a major process operating across biological communities at a range of spatial scales. Rapid ecological change makes it vital that we understand how coevolution proceeds if we are to conserve genetic diversity, combat disease and predict the effects of species invasions.

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Nature

سال: 1989

ISSN: 0028-0836,1476-4687

DOI: 10.1038/337103a0