Thirteen Colonies Eastern North America in The border between the red and pink areas represents the "Proclamation line", while the orange area represents the Spanish claim. Early seeds Main articles:
December 8, NASA: Life with arsenic December 7, Last week, in a much publicized news conference, NASA announced the discovery of a bacterium that can use arsenic instead of phosphorus. The news media covered it with a flourish -- and produced much nonsense.
The paper was posted at the Science magazine web site, so we can look at what was really shown.
Whatever the hype that the news media added, it is an interesting -- but incomplete -- story. The figure at left shows a key experiment; this is Figure 1B of the paper. The graph shows the growth of the bacteria under different conditions. Number of cells on the y-axis log scale ; time on the x-axis.
The three conditions are, from the top: Importantly, if there is no addition, the bacteria grow very little, if at all lower curve. Then, arsenic in the form of arsenate does indeed stimulate growth middle curve. So does phosphate; in fact, it is better upper curve.
The above experiment along with other measurements does seem to establish the basic point: First, the bug prefers P to As: You can see this in the graph above.
They explicitly do not claim that the bug requires or prefers As, merely that it can use it. Second and more importantly, the growth medium with no added P contains a trace level of P.
This probably comes from low levels of P contaminating other chemicals they use. In fact, analysis of the bacteria grown on As shows a weight ratio of about 7 As: On a mole basis, the ratio would be about half that. Thus there still is considerable P in the bacteria.
They cannot claim a total replacement of As for P. The paper recognizes this limitation, but some of the news coverage does not.
|The World Factbook||However, much has happened since it went up, including the Blogger outage.|
This may be interesting, too. So, where is the As in the cell? This becomes particularly important since the replacement is incomplete.
And this is where the paper gets rather weak.As a follow-up to Tuesday’s post about the majority-minority public schools in Oslo, the following brief account reports the latest statistics on the cultural enrichment of schools in Austria. Vienna is the most fully enriched location, and seems to be in roughly the same situation as Oslo.
Many thanks to Hermes for the translation from caninariojana.com The American Revolution was a colonial revolt that took place between and The American Patriots in the Thirteen Colonies won independence from Great Britain, becoming the United States of caninariojana.com defeated the British in the American Revolutionary War in alliance with France and others..
Members of American colonial society argued the position of "no taxation without. TABLE OF CONTENTS. POLICY, POLITICS, WAR, and MILITARY STRATEGY.
by Christopher Bassford • INTRODUCTION: THE STUDY OF STRATEGY. Link to College of Arts and Letters Programs Anthropology. Undergraduate Courses/link to graduate courses Cultural Difference in a Globalized Society (ANT .
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