IdeaWazaWiki - User contributions [en]

Hypercane

2007-04-09T10:00:16Z

66.91.227.70:

A '''hypercane''' is a theoretical class of [[tropical cyclone]] that could form if ocean temperatures reached around 50° [[Celsius]] (122° [[Fahrenheit]])—15° higher than the warmest ocean temperature ever recorded.<ref>[http://www.windows.ucar.edu/tour/link=/earth/Water/temp.html&edu=high Temperature of Ocean Water, Windows to the Universe]</ref>—which could in turn be caused by a large [[asteroid]] or [[comet]] impact, a large [[volcano|volcanic]] or [[supervolcano|supervolcanic]] eruption, or very extensive [[global warming]].<ref>[http://ipsnews.net/news.asp?idnews=30308 The Dawn of the Hypercane?]</ref> There is some speculation that some [[dinosaur]]s might have been killed off by a series of hypercanes, resulting from an asteroid or comet crashing into [[Earth]].<ref>[http://www.newscientist.com/article/mg14519632.600-did-storms-land-the-dinosaurs-in-hot-water.html Did storms land the dinosaurs in hot water?]</ref> The term was originally coined by atmospheric scientist [[Kerry Emanuel]] in [[1996]], at [[MIT]].<ref name="MIT">[http://wind.mit.edu/~emanuel/holem/holem.html Limits on Hurricane Intensity]</ref>

===Physical description===
Hypercanes would have wind speeds of over 130 [[m/s]], but would also have a central pressure of less than 700 [[hectopascal]]s, giving them an enormous lifespan.<ref name="MIT">[http://wind.mit.edu/~emanuel/holem/holem.html Limits on Hurricane Intensity]</ref>

===Hypercanes in fiction===
The [[anime]] ''[[Tactical Roar]]'' uses a fictional hypercane in the [[Pacific Ocean]] as a pretext to showcase naval battles, which are the series' focus.

==References==
<div class="references-small"><references/></div>

==See also==
{{tcportal}}
* [[Tropical cyclone]]
* [[Global warming]]

[[Category:Tropical cyclone meteorology]]

Archive:San Diego Supercomputer Center

2007-03-10T07:34:52Z

66.91.228.234:

[[Image:San_diego_Super_Computer_Center.jpg‎|thumb|San Diego Supercomputer Center]]
The '''San Diego Supercomputer Center''' (SDSC) is an organized research unit of the [[University of California, San Diego]] (UCSD). Physically, SDSC is located on the east end of the [[Eleanor Roosevelt College]] on the campus of UCSD.

Founded in [[1985]], its self prescribed mission is "developing and using technology to advance science". SDSC is primarily funded by the [[National Science Foundation]] (NSF) and pursues research in the areas of [[high performance computing]], [[grid computing]], [[computational biology]], [[geoinformatics]], [[computational physics]], [[computational chemistry]], [[data management]], [[scientific visualization]], and [[computer networking]]. SDSC is internationally recognized for its contribution to computational biosciences and computational approaches to earth sciences and genomics. SDSC is especially known for its role in the creation and maintenance of the [[Protein Data Bank]], the George E. Brown, Jr. Network for Earthquake Engineering Simulation Cyberinfrastructure Center (NEESit), cyberinfrastructure for the geosciences (GEON), and the Tree of Life Project (TOL) .

SDSC is one of the four original sites involved in the [[TeraGrid]] project along with [[National Center for Supercomputing Applications]] (NCSA), [[Argonne National Laboratory]], and [[Center for Advanced Computing Research]] (CACR).

SDSC developed the ROCKS cluster computing environment, and is a pioneer in data management software development, including the [[Storage resource broker]] (SRB).

Currently, the director of SDSC is Dr. [[Francine Berman]], a noted pioneer in [[grid computing]].

==External links==
* [http://www.sdsc.edu SDSC]
* [http://www.sdsc.edu/about/Director.html Francine Berman]
* [http://roosevelt.ucsd.edu Eleanor Roosevelt College]

[[Category:University of California, San Diego]]
[[Category:Supercomputer sites]]
[[Category:E-Science]]

[[Category:Cyberinfrastructure]]

Phosphate buffered saline

2006-09-18T03:38:25Z

66.91.98.16:

'''Phosphate buffered saline''' (abbreviated PBS) is a [[buffer solution]] commonly used in [[biochemistry]]. It is a salty solution containing sodium chloride, sodium phosphate and potassium phosphate. The buffer helps to maintain a constant pH. The concentration usually matches the human body (isotonic).

PBS has many uses because it is isotonic and non-toxic to cells. It can be used to dilute substances.
It is used as a cellular cleaning solution.

Additives can be used to add function. For example, PBS with [[EDTA]] is also used to disengage attached and clumped cells. Divalent [[metals]] such as [[zinc]], however, cannot be added as this will cause precipitation. For these sorts of applications, [[good buffers]] are recommended.

To make a 10 liter stock of 10x PBS:
#weigh the following
::*800 g NaCl
::*20 g KCl
::*144 g Na<sub>2</sub>HPO<sub>4</sub>
::*24 g KH<sub>2</sub>PO<sub>4</sub>
#add and dissolve in 8 L of distilled water under mixing
#pH is ~6.8, but when you dilute the 10x PBS to 1x PBS it should change to 7.4 (try with a little sample; Phosphate buffers change their pH with the dilution)
#fill up to 10 L with distilled water

{{biochem-stub}}

[[Category:Buffers]]