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What are some examples of which man
made materials bacteria does or does not break down? Where could I find
more information on this topic?
Bacteria can degrade so many compounds that your
question is nearly impossible to answer. I'll give
some interesting web sites on the application of
bacterial degradation. Take a l... | <urn:uuid:3bb38a4e-5ace-430b-8c13-085b6a5a7f7c> | 2.78125 | 488 | Q&A Forum | Science & Tech. | 44.369822 |
Northern Prairie Wildlife Research Center
Of all the winds that sweep this planet, tornadoes are the most violent. Tornadoes are local storms of short duration consisting of winds rotating at very high speeds, usually counter-clockwise. These small, severe storms form several thousand feet above the earth's surface, us... | <urn:uuid:27653997-790c-4ba3-a6db-280ec595d2f2> | 3.859375 | 1,051 | Knowledge Article | Science & Tech. | 59.635992 |
More than a century ago, in 1895, two Smithsonian scientists described a new kind of deep sea creature living at least 1000 m (3,280 ft) below the ocean’s surface—a part of the ocean that we still know very little about.
The scientists named their find the whalefish because of its whale-like appearance. Little did they... | <urn:uuid:1209807b-d32e-4f28-9faa-ed2fe494c197> | 3.96875 | 722 | Knowledge Article | Science & Tech. | 48.447876 |
Newton's Second Law of Motion
Improve your problem-solving skills with problems, answers and solutions from The Calculator Pad.Flickr Physics
Visit The Physics Classroom's Flickr Galleries and take a visual overview of Newton's laws of motion.
Looking for a lab that coordinates with this page? Try the Friction Lab from... | <urn:uuid:61ca1804-55f9-4e7a-b3ca-da4a1fd384b8> | 4.28125 | 1,174 | Tutorial | Science & Tech. | 56.773659 |
appearance property enables web authors to change the appearance of HTML elements to resemble native User Interface (UI) controls.
Note that the
appearance property has now been dropped from the CSS 3 specification. However, I've decided to keep this page here for reference. You can also check out the
-webkit-appearanc... | <urn:uuid:1da95198-59fb-432b-877f-844c17d39749> | 3.0625 | 1,335 | Documentation | Software Dev. | 45.505033 |
Young Earther Dino Blood Claim
The AiG article starts off like this:
"Actual red blood cells in fossil bones from a Tyrannosaurus rex? With traces of the blood protein hemoglobin (which makes blood red and carries oxygen)? It sounds preposterous—to those who believe that these dinosaur remains are at least 65 million y... | <urn:uuid:1ddfdd9c-e2db-4cb7-b791-6298b7fdd784> | 3.09375 | 983 | Comment Section | Science & Tech. | 54.53916 |
|Feature Article - February 1997|
|by Do-While Jones|
You may hear it said that certain rocks are so many million (or billion) years old. Most people assume that scientists really know how old the rocks are. The truth is, they don't. The more you study about the various methods for determining the age of the rocks, the... | <urn:uuid:a3f99811-e2b4-4267-bbee-fe4e4fd08f86> | 3.8125 | 2,131 | Nonfiction Writing | Science & Tech. | 61.193815 |
Query and order satellite images, aerial photographs, and cartographic products through the U.S. Geological Survey. Log in as a guest or as a registered user with more privileges. Uses Java Script or Applet Versions for PC, MacIntosh, and Unix programs.
Fact sheet on the historic and current conditions of mangroves of ... | <urn:uuid:2d5d0948-bfaf-4e32-8881-d02296bd8a48> | 3 | 299 | Content Listing | Science & Tech. | 42.38425 |
This is an image of ducks - lifeforms on Earth.
Click on image for full size
Perfect Vision Graphics
Life on Earth
The Earth is very unique to our universe because it is the only planet known to have life . Our planet is the right distance from the sun so that it is possible for animals and plants to live. The first si... | <urn:uuid:0e487a3b-5c62-4477-ac65-d5cfa72fa62b> | 3.625 | 517 | Content Listing | Science & Tech. | 62.717126 |
This is an image of a terrestrial storm system blowing in.
Click on image for full size
Image from: International Cloud Atlas, Volume II
An Overview of Motions in Jupiter's Atmosphere
Motions in the atmosphere include wind. The major winds in Jupiter's atmosphere are the zonal winds
which flow west to east, and east to... | <urn:uuid:aa48b4d9-8f61-4c66-8ec8-6c31f2136781> | 3.21875 | 444 | Content Listing | Science & Tech. | 51.96072 |
Russian physicists OG Sorokhtin, GV Chilingar, and LF Khilyuk noted in their book Global warming and global cooling. Evolution of climate on earth. Developments in Earth & Environmental Sciences (Elsevier 2007) that conventional greenhouse theory is not based on sound physical derivation, with most calculations and pre... | <urn:uuid:83d94d52-2743-4cd0-a169-8827428aa3d6> | 3.09375 | 274 | Truncated | Science & Tech. | 21.678333 |
The Search for Extraterrestrial Intelligence, commonly known as SETI, is back on. SETI operates by turning an array of audio telescopes to the skies to listen for noise that would indicate intelligent life, for example, a pattern of radio waves that is distinct from the background noise of the Universe. SETI went offli... | <urn:uuid:fede6f25-43bb-47e0-9f5b-6463607d79a8> | 3.3125 | 2,251 | Content Listing | Science & Tech. | 51.557638 |
Scientists Discover Birds Hold ‘Funerals’ For DeadAnimals, Pets, Wildlife Sunday, September 2nd, 2012
(BBC) When western scrub jays encounter a dead bird, they call out to one another and stop foraging.
The jays then often fly down to the dead body and gather around it, scientists have discovered.The behaviour may have... | <urn:uuid:d583766d-4537-4b34-8bc0-dd716b8029df> | 3.078125 | 378 | Truncated | Science & Tech. | 47.462794 |
Comments in HTML
<div id="header"> <p>Stuff</p> </div> <!-- END div-header -->
The <!-- --> stuff is the HTML comment. It is a way to add notes into the code which will not display when the HTML is rendered by the browser. In the example above, to signify which opening div tag the closing tag was actually closing. | <urn:uuid:2fcb82c8-a35c-4d44-ad53-4f8fbd8864ca> | 2.6875 | 78 | Documentation | Software Dev. | 83.948211 |
The basic achievements in studying infinite series were made in the 18th and 19th centuries when mathematicians investigated issues regarding the convergence of different types of series. In particular, they found that the famous geometrical series:
converges inside the unit circle z < 1 to the function , but can be an... | <urn:uuid:da13a693-3301-4769-913e-e7b943533ff8> | 3.609375 | 435 | Knowledge Article | Science & Tech. | 43.796118 |
On the applicability of Darwinian principles to chemical evolution that led to life
Chemical evolution at the primitive prebiotic level may have proceeded toward increased diversity and complexity by the adjacent possible process (originally proposed by Kauffman). Once primitive self-replicating systems evolved, they c... | <urn:uuid:391c2f77-b6ed-44a3-b835-bc042e659f00> | 2.875 | 284 | Academic Writing | Science & Tech. | 35.889172 |
Find information on common issues.
Ask questions and find answers from other users.
Suggest a new site feature or improvement.
Check on status of your tickets.
Electro-magnetics is one of the four fundamental interactions of nature, along with strong interaction, weak interaction and gravitation. It is the force that c... | <urn:uuid:948a2c6c-b649-4396-b045-36752bd9a289> | 3 | 193 | Content Listing | Science & Tech. | 21.921661 |
In this episode of O Wow Moments featuring Mr. O from the Children’s Museum of Houston, we play a little game called "Guess That Smell!" where we explore how our sense of smell works. It turns out that we are nanosensors - our noses actually sense molecules - things close to a billionth of a meter in size! But, as you'... | <urn:uuid:aae48781-72ab-4b97-aa34-10a155663df0> | 2.703125 | 120 | Truncated | Science & Tech. | 63.50875 |
1. Gene Variability. The study of R alleles which Fogel and I reported in the 1943 News Letter has been continued, with the addition of a series of rr types and with further study of specific modifiers of R action and of environmental conditions affecting it. All or nearly all of the 22 Rr's originally included appear ... | <urn:uuid:f9dd6660-f82d-4dff-a0aa-0907fe380d85> | 2.75 | 668 | Academic Writing | Science & Tech. | 43.292474 |
|Why do objects have mass?
To help find out,
CERN has built the
Large Hadron Collider
(LHC), the most powerful
yet created by
Since 2008, the
LHC smashed protons into each other with unprecedented impact speeds.
The LHC is exploring the leading explanation that mass arises from
ordinary particles slogging through an ot... | <urn:uuid:73dcaad2-b24d-4172-9b0a-1e1f750adae7> | 3.859375 | 229 | Content Listing | Science & Tech. | 38.766203 |
Submitted by kfesenma on Wed, 2012-09-05 07:00
Today, September 5, marks the 35th anniversary of the launch of Voyager 1, which lifted off in 1977 on a Titan III–Centaur launch system just 16 days after its twin, Voyager 2. Now 11 billion and 9 billion miles from the sun, respectively, the spacecraft are the farthest-f... | <urn:uuid:a4509428-838c-425c-95c0-4603c5031eba> | 2.828125 | 926 | Content Listing | Science & Tech. | 51.624892 |
“Simple and cheap, like onion dip.” That’s how Seth Shostak (SETI Institute) refers to our early optical search systems, which have involved limited equipment in the hunt for extraterrestrial intelligence, at least when compared to the much more demanding resources deployed by the radio search. Cheap is good, but not w... | <urn:uuid:552fdb3c-6706-4f39-b497-847a24adaff9> | 2.78125 | 598 | Personal Blog | Science & Tech. | 46.0025 |
How big is an atom? A simple question maybe, but the answer is not at all straighforward. To a first approximation we can regard atoms as "hard spheres", with an outer radius defined by the outer electron orbitals. However, even for atoms of the same type, atomic radii can differ, depending on the oxidation state, the ... | <urn:uuid:21a5922e-7068-4744-8986-f1592289a6ac> | 3.484375 | 2,039 | Tutorial | Science & Tech. | 45.100808 |
Problem 437: Tangent Circles, Diameter, Chord, Perpendicular, Congruence
The figure shows the circle 1 with
diameter AB and circle 2 with diameter AC tangent at A. Line APD
is a chord of circle 1, line DFE is perpendicular to AB, the
extension of AF intersects circle 1 at G, line GMH is
perpendicular to AB, and AM inte... | <urn:uuid:83e08e7c-6b96-44b8-91d5-704eb22640a8> | 2.828125 | 108 | Tutorial | Science & Tech. | 56.928333 |
Hi, I recently came across a code which had the below lines.
unsigned int n = 10;
n ^= (unsigned int) - 1 ;
It is not clear to me what the second line does.
Anyone can help please :)
on 03/05/2010 – Made popular on 03/05/2010
when a date type is considered signed and unsigned is that simple referring to - for signed an... | <urn:uuid:3bdc3a67-f20a-4310-a413-7e9d807ffff7> | 2.9375 | 175 | Q&A Forum | Software Dev. | 62.535 |
Nutrient-rich slurry from farms has been causing coral populations on Australia's Great Barrier Reef to crash for 90 years.
The corals collapsed between the 1920s and 1950s, say John Pandolfi at the University of Queensland in Brisbane and his colleagues. The team took cores from three reefs and worked out when the cor... | <urn:uuid:1a4d4e95-0c5b-4c07-bb15-1809919403f9> | 3.4375 | 460 | Truncated | Science & Tech. | 52.647452 |
This section illustrates you how to draw different curves with the class QuadCurve2D.
The QuadCurve2D class provides a quadratic parametric curve segments. We are providing you an example which shows different curves.
In the given example, we have used Vector class to implement an array of objects. The components of th... | <urn:uuid:b08e8bd3-5eee-4cc1-89cc-20090dd2e991> | 3.671875 | 185 | Documentation | Software Dev. | 52.434026 |
The one objection I would have is the title – fortunately, extinction is not yet an issue…Read more
Canada and the US have about 50 species of native bumblebees. For five of them, a rapid decline has been observed since the 1990s. Three species — Bombus affinis, B. terricola, and B. occidentalis — will now be submitted... | <urn:uuid:41ef243a-ac7b-437f-a868-6c1266d291f2> | 2.953125 | 283 | Content Listing | Science & Tech. | 37.941843 |
• Title: Post-common envelope binaries from SDSS – XVI. Long orbital period systems and the energy budget of CE evolution
• Authors: Rebassa-Mansergas et al.
• First Author’s Institution: Universidad de Valparaiso, Chile
There is no doubt that a high fraction of stars are in binary (or even higher order!) systems. Many... | <urn:uuid:bf77ce00-f9a9-4545-8dee-375816802fee> | 3.15625 | 1,174 | Academic Writing | Science & Tech. | 40.940261 |
As today’s San Antonio earthquake attests, such tremblings can occur in Texas, although they are relatively rare.
According to the University of Texas Institute of Geophysics, there were about 100 earthquakes in Texas large enough to be felt during the last century. Just four of these earthquakes have had magnitudes be... | <urn:uuid:456d9b29-695c-4ea4-bdfd-a90d8125ac6e> | 3.578125 | 259 | Personal Blog | Science & Tech. | 49.957471 |
Astronomers have witnessed one of the rarest and most extreme galaxy clusters in the universe! That’s not all; behind it, they have found an object that ought not exist!
Using NASA’s Hubble Space Telescope, cosmologists have uncovered an extremely massive cluster of galaxies existing 10 billion light-years away and beh... | <urn:uuid:2f8f0ea9-508c-4dec-ba4e-753a5c729fa6> | 3.765625 | 618 | Personal Blog | Science & Tech. | 39.585628 |
Haskell monads form a type class. And Haskell type classes are essentially interfaces shared by some types. So the Monad type class is a common API for talking to a bunch of different types. So the question is this: what's so special about this API?
One way to grasp an API is to see concrete examples. Usually the monad... | <urn:uuid:4412f62b-6c45-4371-992c-068a3244945b> | 3.15625 | 1,982 | Personal Blog | Software Dev. | 81.863159 |
“Almost limitless, clean power…” Yes, it is cold fusion!
The March 27, 2009 episode of Brink, a weekly show on the Science Channel, featured an update on the 2009 results of nuclear particle detection by the SPAWAR group at the American Chemical Society meeting that year. Read about the news on ScienceDaily.com.
Yes, i... | <urn:uuid:41c479ac-3cfd-4740-b2d4-8ec4525cbf3d> | 2.734375 | 298 | Personal Blog | Science & Tech. | 55.140455 |
Sonars resolve targets in range and bearing. A sonar records the arrival time and bearing of the echo from a target. When an echo is detected at time
measured relative to the time of pulse transmission, the range to the target is
is the speed of sound in water. The detection of an echo implies that there is a target in... | <urn:uuid:9683aebf-c295-4d39-8a7a-d01207de42bd> | 4.25 | 979 | Academic Writing | Science & Tech. | 46.426385 |
Allows one or more procedural SQL statements to be iteratively executed.
The WHILE statement can be used to iteratively execute a sequence of one or more procedural-sql-statements.
The iteration continues as long as search-condition evaluates to true.
For information on procedural-sql-statements, see Procedural SQL Sta... | <urn:uuid:447f3350-c0b6-4d2f-905d-1edfb7c78808> | 2.6875 | 267 | Documentation | Software Dev. | 45.997356 |
Special & General Relativity Questions and Answers
Does time stop when you travel at the speed of light?
Since no matter can ever travel at exactly the speed of light, you are asking a hypothetical question. We know from experiment that the half-lives of unstable particles such as muons are prolonged in OUR reference f... | <urn:uuid:8cb9701c-df08-4bb0-8310-3d54175b43a2> | 3.1875 | 205 | Q&A Forum | Science & Tech. | 45.199451 |
Energy returned on energy invested
In physics, energy economics and ecological energetics, energy returned on energy invested (EROEI or ERoEI); or energy return on investment (EROI), is the ratio of the amount of usable energy acquired from a particular energy resource to the amount of energy expended to obtain that en... | <urn:uuid:911ff905-2dd8-437a-a9fb-648fd5965f54> | 3.390625 | 3,038 | Knowledge Article | Science & Tech. | 44.762058 |
Making string-formatting smarter by handling generators?
python.list at tim.thechases.com
Wed Feb 27 21:41:32 CET 2008
>> Is there an easy way to make string-formatting smart enough to
>> gracefully handle iterators/generators? E.g.
>> transform = lambda s: s.upper()
>> pair = ('hello', 'world')
>> print "%s, %s" % pai... | <urn:uuid:28557a23-cd90-4626-880b-1db0e8a0526a> | 2.8125 | 390 | Comment Section | Software Dev. | 63.276398 |
The National Zoo's Antarctica Expedition is sponsored by the National Science Foundation's Office of Polar Programs.
All photographs depicting Weddell seals were taken under NMFS Permit No. 763-1485-00 issued under the authority of the Marine Mammal Protection Act.
Weddell Seal Fact Sheet
Species: Leptonychotes weddell... | <urn:uuid:d1c7973e-75ff-459a-baf4-1b09bf08da1e> | 4.09375 | 1,102 | Knowledge Article | Science & Tech. | 46.425234 |
Hydrogen Isn't Always the Renewable It Seems To Be
Ever since President Bush announced his hydrogen car initiative in his State of the Union address, hydrogen as a fuel source has received more press. But hydrogen isn't necessarily the renewable energy it's portrayed to be - whether it is or not depends on the underlyi... | <urn:uuid:8d69dd78-9893-45fe-a863-1f5a32b923be> | 2.71875 | 229 | Personal Blog | Science & Tech. | 46.63997 |
How Iridium data are processed
A down-sampled data stream from the Iridium system is sent to the Johns Hopkins University Applied Physics Laboratory (USA). Algorithms developed by Dr Brian Anderson subtract off the ambient magnetic field, correct for cross-talk, and filter the data. The process is described further her... | <urn:uuid:9f31ea75-01f7-4117-b439-845c65be78f8> | 2.703125 | 153 | Knowledge Article | Science & Tech. | 37.03877 |
aRecaptures reported as 26 June took place between the evening of 25 June and the morning of 26 June.
Hooper has noted that the number of recaptures increased sharply on 1 July, the same day that E.B. Ford sent a letter to Kettlewell. Ford's letter commiserated with Kettlewell for the low recapture rates but suggested ... | <urn:uuid:6c61e5c8-eb00-4d18-99db-70763f10cd23> | 2.953125 | 3,724 | Academic Writing | Science & Tech. | 54.134953 |
Location of experimental equipment for Lake-ICE and SNOWBAND. The experiment headquarters is in Ann Arbor, and the aircraft are also based there.
The two experiments, the Lake-Induced Convection Experiment (Lake-ICE) and Snow Band Dynamics (SNOWBAND), will study a group of weather phenomena that occur around the Great ... | <urn:uuid:8b08777e-5578-404e-9818-47ef89363ec6> | 3.984375 | 1,548 | Knowledge Article | Science & Tech. | 46.500998 |
The process of detecting and monitoring the physical characteristics of an area by measuring its reflected and emitted radiation at a distance from the targeted area. Remote sensing is used in this thesaurus to refer to methods that are solely or primarily deployed through air or space. Included in this concept are stu... | <urn:uuid:972e96ac-fe81-43c2-9b9f-0b75c6d2515e> | 3.4375 | 150 | Knowledge Article | Science & Tech. | 24.332814 |
On the surface, it would seem that using an e-reader would be a sure-fire way to up your green factor. After all, they’re pretty much the Superman of the tree world, saving innocent victims from the paper mill. But as an electronic device, e-readers aren’t without their footprint. There are the carbon emissions that re... | <urn:uuid:7d09c975-d853-4468-bb0d-5bfa7797c95f> | 3.0625 | 422 | Personal Blog | Science & Tech. | 52.643309 |
EU-funded study calls for better protection for freshwater ecosystems
Current methods used to plan conservation strategies are not providing adequate protection for freshwater ecosystems and the ecosystem services they provide, according to African and European researchers in a new study published in the journal Conser... | <urn:uuid:e32ee6df-467f-4bda-8cd1-10ed311e088f> | 3.265625 | 864 | Knowledge Article | Science & Tech. | 20.353172 |
What part of Florida experiences the most hurricane strikes?
- spreadsheet or notebook within which to record data collected
This exercise uses an online searchable database to discover the locations of historic hurricane tracks. The database ends in 2006. At this National Oceanic and Atmospheric Admistration website (... | <urn:uuid:9a7af853-717a-4bc3-aeba-88163bdeb266> | 3.109375 | 1,042 | Tutorial | Science & Tech. | 50.394916 |
British fighter jets escorted a Pakistan International Airlines passenger plane to Stansted Airport near London on Friday, where police went on board and arrested two men on suspicion of endangering an aircraft. Full Article
Mangroves excel at storing climate-warming carbon
WASHINGTON (Reuters) - Tropical mangrove tree... | <urn:uuid:12da6b9a-fd16-4a0a-8e4d-e1a1c7c0813e> | 3.21875 | 811 | Truncated | Science & Tech. | 39.459354 |
Have you ever wondered if there are other planets in the universe (besides the nine in our solar system)? Everyday astronomers search for planets that orbit other stars. These planets are called extrasolar because they do not orbit our Sun.
How do astronomers find extrasolar planets?
Astronomers can’t just look up, poi... | <urn:uuid:7342085d-9044-47fc-9b2a-0234902e47a7> | 4.15625 | 1,190 | Knowledge Article | Science & Tech. | 56.994616 |
Click on icon in upper right corner of slideshow to enlarge images.
On the show this week, we'll talk with James Watson, of "Watson and Crick" fame, two of the scientists* credited with discovering the helical structure of DNA molecules.
The scientists published their discovery in the journal Nature in 1953. And while ... | <urn:uuid:cd1fbcc0-7777-43b5-962b-f4a4264a54bd> | 3.171875 | 497 | Nonfiction Writing | Science & Tech. | 52.652214 |
With c++ (and other languages) for each variable/string you want to output, you must have a concatenation operator between them.
With c++ it's "<<" for outputs. With PHP it's ".", with C# it's "+".
Your code is correct, just the line which outputs the text has one small error.
if (x > y)
cout << x << "is the greater va... | <urn:uuid:dcfe29ab-30ec-4d35-8e43-9e25b6d43bb8> | 2.6875 | 120 | Q&A Forum | Software Dev. | 82.662544 |
In the Kingdom of the Blue Whale, the researchers came across a dead blue whale while at sea. The tell-tale signs of death were all-around. The floating bloating body of the dead whale. The circling and squawking scavengers from the sky - in this case sea gulls. Finally, the feeding frenzy of blue sharks in the ocean. ... | <urn:uuid:b56fdc02-c449-42b2-a4a8-35c217ed79df> | 3.390625 | 428 | Personal Blog | Science & Tech. | 56.582462 |
Lazy loading, also known as dynamic function loading , is a mode that allows a developer to specify what components of a program should not be loaded into storage by default when a program is started. Ordinarily, the system loader automatically loads the initial program and all of its dependent components at the same t... | <urn:uuid:18a1cec4-be48-4046-b64b-9c9168ad25bc> | 2.75 | 243 | Knowledge Article | Software Dev. | 36.329032 |
Lampreys (sometimes also called lamprey eels) are a family of jawless fish, whose adults are characterized by a toothed, funnel-like sucking mouth. Translated from a mixture of Latin and Greek, lamprey means stone lickers (lambere: to lick, and petra: stone). While lampreys are well known for those species which bore i... | <urn:uuid:3beeb0c1-31ac-458d-abe2-4059c43b1c12> | 4 | 460 | Knowledge Article | Science & Tech. | 32.470423 |
So how bad was Hurricane Irene? Some commentators seem to think Irene didn’t match up to the media, yet preliminary assessments suggest Irene will be one of the top 10 costliest hurricanes ever in the United States. New Yorkers are indeed fortunate that the worst case scenario did not play out in their fair city, but t... | <urn:uuid:d8e3153f-af3a-4e9b-8afa-587b92c2b66f> | 2.703125 | 2,489 | Content Listing | Science & Tech. | 41.193651 |
In a Compton scattering experiment, an x-ray photon scatters
through an angle of 17.8° from a free electron that is
initially at rest. The electron recoils with a speed of 1,240
(a) Calculate the wavelength of the incident photon.
(b) Calculate the angle through which the electron scatters.
An electron has a kinetic e... | <urn:uuid:63e3ad58-6bf5-4415-8eeb-04161bdb6575> | 3.34375 | 121 | Q&A Forum | Science & Tech. | 71.974913 |
Click here for a printable version of this page.
The living coelacanths, Latimeria chalumnae,and Latimeria menadoensis are possibly the sole remaining representatives of
a once widespread family of Sarcopterygian (fleshy-finned) coelacanth fishes (more than 120 species are known from fossils)all
but one of which disapp... | <urn:uuid:54b5815c-536d-463c-88bb-fac7e646672e> | 3.53125 | 1,724 | Knowledge Article | Science & Tech. | 32.310719 |
|EPA Global Warming Site|
Extensive website discussing all aspects of global warming. Discover what global warming is, what the greenhouse gases are and how much we emit, what the potential future impacts are, and what is being done to correct the problem. Site features public, educator, student, and kid resources. Exp... | <urn:uuid:d3a00669-5b09-425b-b251-3633945bc6d8> | 3.0625 | 154 | Content Listing | Science & Tech. | 31.707895 |
Coasts and seas
- Bulgarian (bg)
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- French (fr)
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- Italian (it)
- Lithuanian (lt)
- Latvian (lv)
- Maltese (mt)
- Dutch (nl)
- Norwegian (no)
- Polish (pl)
- Portuguese (pt)... | <urn:uuid:a1645ca2-ebc9-429d-9091-bcf9587e1b39> | 3.4375 | 1,458 | Content Listing | Science & Tech. | 39.419445 |
A major advance in molecular robotics and structural DNA nanotechnology occurred last May with the publication in Nature of two papers, each of which describes a new DNA nanorobot that walks across a landscape made from DNA origami (see Nanodot post “DNA-based ‘robotic’ assembly begins“). In one paper the nanorobot mov... | <urn:uuid:1e564df8-19ef-4c22-8af1-f4b3a77f5af0> | 3.140625 | 556 | Content Listing | Science & Tech. | 33.769343 |
Not all algebras contain a (left and right) multiplicative neutral identity element, but if an algebra contains such an identity element it is unique.
If an algebra A contains a multiplicative neutral element then in general it cannot be derived from an arbitrary element a of A by forming a / a or a^0, since these oper... | <urn:uuid:f3c27a0d-a96f-4405-9911-60bd3a22283b> | 3.21875 | 806 | Documentation | Science & Tech. | 30.27655 |
arg takes one of the following forms:
var_list start-end [type_spec]
WRITE writes text or binary data to an output file.
See PRINT, for more information on syntax and usage. PRINT
and WRITE differ in only a few ways:
- WRITE uses write formats by default, whereas PRINT uses
- PRINT inserts a space between variables unl... | <urn:uuid:9c4f223f-00db-42d2-9d57-4f9608b6c688> | 3.09375 | 198 | Documentation | Software Dev. | 43.482524 |
To understand how the Earth and our environment work, we need to have access to the water and the atmosphere and the solid earth, the bottom of the ocean. Scripps vessels have played a very important part in providing access to those areas for our scientists. Competitions for the nation's research vessels come along ve... | <urn:uuid:3cf97203-f039-4d78-92ef-049177fff60c> | 3.125 | 624 | Audio Transcript | Science & Tech. | 53.93526 |
As dark matter particles steam through the detector, scientists hope that a few will collide with the argon atoms. This will generate two flashes of light - one in the liquid argon and another in the gas - which will be detected by the receptors. — BBC News
Rebecca Morelle visits the Gran Sasso National Laboratory a ma... | <urn:uuid:b8f19959-ba37-48ba-bd90-5462c9251144> | 2.953125 | 128 | Truncated | Science & Tech. | 43.70325 |
Partial solar eclipse on January 4th
Since we know the Moon's orbital plane right now, we can extrapolate to the appearance of the Moon in upcoming months and phases. We know that the first and third quarter Moons will be either higher or lower away from the ecliptic, since at new the moon was obviously at the ecliptic... | <urn:uuid:c7aacfd8-2428-4f40-9db6-bc8fb66244c7> | 3.046875 | 228 | Personal Blog | Science & Tech. | 56.078542 |
Cool Deep Space Stuff
Below are sites where you can view and download digital images of space
taken from equipment such as Earth- (ground-) based telescopes,
satellites, the space shuttle, and the Hubble Space Telescope. Visit the
NASA Image exchange to view a wide range of space images.
Picture of the Day
Images from ... | <urn:uuid:6bbb2b13-cd3f-4e3e-a59a-9c01ccaee46e> | 3.171875 | 977 | Content Listing | Science & Tech. | 36.113436 |
Nearly one-third of the world’s amphibian species are at risk of extinction. The rescue project aims to save more than 20 species of frogs in Panama, one of the world’s last strongholds for amphibian biodiversity. While the global amphibian crisis is the result of habitat loss, climate change and pollution, chytridiomy... | <urn:uuid:435a40f6-7d1c-4517-89ec-6afd7e076883> | 3.484375 | 131 | Truncated | Science & Tech. | 40.058363 |
Accessing and Changing Data Fundamentals
The primary purpose of a Microsoft® SQL Server™ 2000 database is to store data and then make that data available to authorized applications and users. While database administrators create and maintain the database, users work with the contents of the database:
- Accessing, or re... | <urn:uuid:41de0c9d-7aac-420b-b1f0-04c552183aad> | 3.421875 | 1,480 | Documentation | Software Dev. | 34.562303 |
|Why is this nebula so complex?
When a star like our Sun is dying, it will cast off its outer layers, usually into a simple overall shape.
Sometimes this shape is a
sphere, sometimes a
double lobe, and sometimes a
ring or a
In the case of planetary nebula
however, no such simple structure has emerged.
To help find out ... | <urn:uuid:91cff925-751f-4b65-b39c-17b08f090034> | 3.140625 | 208 | Knowledge Article | Science & Tech. | 44.31351 |
Performing all of your application development with a single language on a single platform may be ideal, but it's not always practical. There are times when you may need to integrate a new application with a legacy one, and communication between the two can be an issue. For instance, you may desire to isolate the two a... | <urn:uuid:8ca5ef80-761b-4f84-a07a-420a6975d6ef> | 2.890625 | 854 | Documentation | Software Dev. | 26.669221 |
Taxonomy | Morphology
and Anatomy | Chemistry
Life History | Ecology | Photo
Gallery | Home
Crust Aging and Mechanisms of Crust Death
In observing Mastocarpus crusts, about the biggest you will see
is 1.0 meter in diameter. I found a few that were almost 70 cm on the shore
along the marine station. I heard about people... | <urn:uuid:467de4a6-3c75-48bf-91b1-4240d64d9db5> | 3.078125 | 389 | Knowledge Article | Science & Tech. | 52.584056 |
This bizarre-looking concoction of glass, liquid and tubes could one day bring a whole new meaning to the idea of natural lighting.
The new "bio-light" concept designed by Dutch electronics company Philips creates light in the same way that bioluminescent living organisms like fireflies and glow worms do.
The phenomeno... | <urn:uuid:4e66f1af-be85-478e-8e5a-64fe0daea0ff> | 3.28125 | 177 | Knowledge Article | Science & Tech. | 24.298091 |
What is it like to work in the remote forests of Papua New Guinea? Biologist Vojtech Novotny knows better than most. He tells Rowan Hooper about dealing with disease and warring tribes in one of the most linguistically and biologically diverse regions on Earth
Tell me about your work in Papua New Guinea.
We've built a ... | <urn:uuid:8f24d2ec-9434-4e1b-9a0a-d392b215a837> | 2.78125 | 226 | Truncated | Science & Tech. | 55.70606 |
Nature Bulletin No. 273-A September 9, 1967
Forest Preserve District of Cook County
Richard B. Ogilvie, President
Roland F, Eisenbeis, Supt. of Conservation
In the summer of 1956 we had a plague of Periodical Cicadas, or "17-
year locusts" in the Chicago region. There were countless millions of
them during June and ear... | <urn:uuid:50cbdb71-f316-45be-95de-7dd61a4e8eaa> | 3.390625 | 809 | Knowledge Article | Science & Tech. | 62.387266 |
Centipedes’ Reproductive Cycle
Centipedes do not undergo a process of metamorphosis, though their young may pass through several molts during growth. Centipedes mate in warm months and stay dormant through winter. A centipede may live up to six years.
The centipede reproductive cycle involves distinct rituals. The fema... | <urn:uuid:168f7168-dc53-4f32-9ab7-6808ddbee176> | 4.09375 | 339 | Knowledge Article | Science & Tech. | 43.63322 |
Visit The Physics Classroom's Flickr Galleries and enjoy a photo overview of the topic of standing waves.
Need ideas? Need help? Explore The Physics Front's treasure box of catalogued resources on standing waves.Low Cost Physics Activities: Pulses on a Coil Spring
Use a slinky to demonstrate wave categories, behaviors ... | <urn:uuid:a2995be8-c223-458d-b8f3-13735f8cb08d> | 4.3125 | 1,037 | Tutorial | Science & Tech. | 41.898152 |
Adding minus infinity to plus infinity gives mathematicians nightmares and even makes theoretical physicists worry a little. Fortunately, nature does not worry about what the mathematicians or physicists think and does the job for us automatically. Consider the grand total vacuum energy (once we have added in all quant... | <urn:uuid:90c1174b-6833-4743-82e0-6c66b94b7d93> | 2.9375 | 809 | Nonfiction Writing | Science & Tech. | 25.440344 |
Firstly , what is friction ?
Friction is the force that opposes the relative motion or tendency of such motion of two surfaces in contact.
It is also the contact of two objects creating static electricity.
It is not, however, a fundamental force, as it originates from the electromagnetic forces and exchange force betwe... | <urn:uuid:b7d28f0e-ac10-4695-80ef-4e3debfdd901> | 4.28125 | 2,369 | Knowledge Article | Science & Tech. | 35.254505 |
- Mathieu Isidro
public information officer, European Southern Observatory
Are we losing interest in space and astronomy, and if so, how can we inspire the next generation?
In times of budget cuts and crisis, science is often left behind for more pressing issues. Costly projects, such as the James Webb Space Telescope,... | <urn:uuid:d875e9b6-3d18-461f-8eb8-9fcb224aa544> | 3.21875 | 288 | Nonfiction Writing | Science & Tech. | 34.997222 |
Irish Chronicles Document Links Between Volcanoes and Weather
A study of over 40,000 written entries in Irish Annals and ice core measurements shows a strong correlation between the occurrence of volcanic eruptions and extreme cold weather in Ireland over a 1200 year period. Data analyzed in this study cover the period... | <urn:uuid:46d0e049-c3de-46d3-a849-5175fe675bcc> | 3.25 | 678 | Content Listing | Science & Tech. | 59.241806 |
The physics lesson for today.
The question is how much do you weigh? So you get on your scale and see that your weight is 200 pounds, lets say.
The number you are looking at is your mass, not your weight. But the scale is not set up to measure mass because mass does not change noticeably due to velocities at non relati... | <urn:uuid:6824e460-d75c-4ee6-8129-d2123a5d1bb0> | 3.609375 | 1,111 | Personal Blog | Science & Tech. | 60.488396 |
One of the nice things about the Extrasolar Planets Encyclopedia, which I came across whilst writing about Kepler, is that you can produce plots which summarise the properties of all the extra-solar planets discovered so far. I was particularly interested in the plot below, of orbital period (in days) against mass (sca... | <urn:uuid:385133da-ae37-442e-8c0b-5c9b73a3bd4d> | 3.109375 | 580 | Personal Blog | Science & Tech. | 30.814547 |
Coral Reef Thriving in Sediment-laden Waters
July 31, 2012
"Rapid rates of coral reef growth have been identified in sediment-laden marine environments, conditions previously believed to be detrimental to reef growth. A new study has established that Middle Reef – part of Australia's iconic Great Barrier Reef – has gro... | <urn:uuid:fd6f1bf7-cc93-4447-a2ae-fa2dc71e1ae2> | 3.484375 | 232 | Truncated | Science & Tech. | 37.355177 |
I missed that bit, mainly due to the badly broken quoting. Transpower, please wrap your quotes in quote tags, don't just stick your responses into the quote...
Originally Posted by Strange
Before TTL logic came along, very few things used 5V power...tube radio circuits work at voltages from millivolts to hundreds of vo... | <urn:uuid:a4cb8621-fb1e-4bba-85be-b026b2d28ffc> | 2.875 | 585 | Comment Section | Science & Tech. | 56.255385 |
Dust storms generally call to mind places like the Sahara Desert or the Gobi Desert, but dust storms occur at high latitudes as well. One such storm left streamers over the Gulf of Alaska in mid-November 2010.
The Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Terra satellite captured this natural-colo... | <urn:uuid:e7bdd8e2-dbe9-40c8-b420-727192fef25b> | 4.0625 | 265 | Knowledge Article | Science & Tech. | 50.44754 |
||Organic Chemistry 4e Carey||
|Online Learning Center
Chapter 10: Conjugation in Alkadienes and Allylic Systems
Allylic Systems |
Self Assessment |
Conjugation in Alkadienes and Allylic Systems
Resonance is probably one
of the most important concepts that one needs to master in order to understand
organic chemistry, y... | <urn:uuid:ec4ccb1d-0711-4953-9088-95e47f0e373b> | 3.671875 | 330 | Tutorial | Science & Tech. | 22.507745 |
Taking a closer look at light
Nov 1, 2001
Two teams of European physicists have developed techniques that can measure optical fields more accurately than ever before. Wolfgang Lange and colleagues at the Max Planck Institute for Quantum Optics in Germany have built a single-ion probe that can measure a standing light w... | <urn:uuid:d7062a9b-03f2-4c8d-9442-5e4976524bfb> | 3.8125 | 587 | Truncated | Science & Tech. | 33.493953 |
Cleaning Up Wastes
Excerpted from BIO. "Protecting Our Environment" Washington, D.C.: Biotechnology Industry Organization, 1992.
The use of biotechnology to solve environmental problems, according to William K. Reilly, former head of the Environmental Protection Agency, "could be - should be - an environmental breakthr... | <urn:uuid:3717ef16-29c0-4dfd-854b-b496ba68b0e8> | 3.4375 | 1,009 | Knowledge Article | Science & Tech. | 24.949636 |
Science Fair Project Encyclopedia
|Name, Symbol, Number||Ununbium, Uub, 112|
|Chemical series||Transition metal|
|Group, Period, Block||12, 7, d|
|Appearance||Unknown, probably a metallic |
and silvery white or grey colour.
|Atomic weight|| amu|
|Electron configuration||[Rn].5f14 6d10 7s2|
a guess based on Mercury
|e-s... | <urn:uuid:666eb84d-0b2f-4ad0-81e1-4d7d9cc38e68> | 3.375 | 321 | Knowledge Article | Science & Tech. | 49.392659 |
Feb 23,2007 00:00
Biologist Steven Amstrup discusses global warming, polar bears in
Scientists agree: If greenhouse-gas emissions remain uncurbed, the consequences to the planet will be devastating. Wildlife biologist Steven Amstrup discusses the effects of global warming on polar bears as part of the Wildlife Conserva... | <urn:uuid:d82881a3-85b3-442f-b847-c9a79fad2f6c> | 3.046875 | 182 | Truncated | Science & Tech. | 31.437139 |
- Conical Epidermal Cells Allow Bees to Grip Flowers and Increase Foraging Efficiency
Current Biology, Volume 19, Issue 11, 9 June 2009, Pages 948-953
Heather M. Whitney, Lars Chittka, Toby J.A. Bruce and Beverley J. Glover
SummaryThe plant surface is by default flat, and development away from this default is thought t... | <urn:uuid:6f927c1b-49b9-43cb-aac5-c25aa4de9be9> | 2.921875 | 969 | Content Listing | Science & Tech. | 22.395757 |
When C was first invented by Dennis Ritchie in the early
1970s, his main objective was to create a language that was easy to read, fast,
powerful, easy to learn and most of all, extendable. Before that programming
required either knowing the byte codes for the processor you were developing or
using FORTRAN and COBOL. N... | <urn:uuid:305c26b8-65e8-4b04-80f7-2cb8554f4931> | 4 | 1,314 | Personal Blog | Software Dev. | 54.066266 |
Reynolds number through a pipe
Hello, can someone tell me how the reynolds number for flow through a pipe change along it's length? Is the only method that the boundary layer gets thicker along the pipe so the freestream velocity increases? Assuming no gas temperature change along the pipe's length.
From thinking of th... | <urn:uuid:56f76523-6449-477a-88f1-46657c4e50cb> | 2.9375 | 126 | Comment Section | Science & Tech. | 56.350639 |
Question about silver staining
Posted 16 February 2005 - 10:12 PM
Posted 17 February 2005 - 01:41 AM
that was discussed at bioforum on topic
the process relies on differential reduction of silver ions that are bounds to the side chains of amino acid or nucleic acids. There are supposed to be at least 100 to 1000 fold m... | <urn:uuid:ded8e50a-fbb3-4694-878b-ec21c8ff5b76> | 2.71875 | 185 | Comment Section | Science & Tech. | 64.449282 |
A right circular, conical vessel of altitude 21 cm and base radius 11 cm is kept with its vertex downwards. If 2 litres of water is poured into it, how high above the vertex will the level of the water be?
I think I need to convert the 2 L to 2000 cc's, and use similar similar triangles to find the height of the water ... | <urn:uuid:a5e8bc9c-930f-447d-a47f-e082b610f7f3> | 2.921875 | 129 | Q&A Forum | Science & Tech. | 92.821667 |
“during this year a most dread portent took place. For the sun gave forth its light without brightness… and it seemed exceedingly like the sun in eclipse, for the beams it shed were not clear.”
This quote from Procopius of Caesarea is matched by other sources from around the world pointing to something – often describe... | <urn:uuid:05708725-9bc1-414f-a6bb-d43839a5c8fd> | 3.484375 | 863 | Comment Section | Science & Tech. | 51.532158 |
If you have specific Questions/Numerical problems in which you need help please post them here:
Section I- Force, Work, Energy and Power
- What are the forces acting on a box when it is pulled along a frictional surface?
- What are the forces acting on a moving rocket?
- Is mass conserved in a moving rocket?
- Two bodi... | <urn:uuid:10d20d81-4b92-46f6-a3ac-40b0ff937a6b> | 4.03125 | 1,988 | Q&A Forum | Science & Tech. | 69.360378 |
MS Access: CInt Function
In Microsoft Access, the CINT function converts a value to an integer.
The syntax for the CInt function is:
CInt( expression )
expression is the value to convert to an integer.
- Access 2013, Access 2010, Access 2007, Access 2003, Access XP, Access 2000
Dim LValue As Integer LValue = CInt(8.45)... | <urn:uuid:7e4d39c7-c550-4f0c-aadc-41ec5783fc7a> | 3.53125 | 252 | Documentation | Software Dev. | 81.772228 |
This module defines a class which implements the client side of the
HTTP protocol. It is normally not used directly -- the module
urllib uses it to handle URLs that
The module defines one class, HTTP:
- HTTP ([host[, port]])
An HTTP instance
represents one transaction with an HTTP server. It should be
instantiated pass... | <urn:uuid:ca89aec9-cd35-4d7d-b620-bcc44c560ee5> | 3.5 | 353 | Documentation | Software Dev. | 79.715162 |
|How to Think Like a Computer Scientist|
source ref: ebookit.html
In the last chapter we had some problems dealing with numbers that were not integers. We worked around the problem by measuring percentages instead of fractions, but a more general solution is to use floating-point numbers, which can represent fractions ... | <urn:uuid:b5be2285-723d-4898-84e6-d0c545599f9d> | 4.4375 | 2,626 | Documentation | Software Dev. | 53.698047 |