text large_stringlengths 148 17k | id large_stringlengths 47 47 | score float64 2.69 5.31 | tokens int64 36 7.79k | format large_stringclasses 13
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The y-axis is power; the x-axis is time. For a finite energy resource, the product [energy] is a constant, which is a diagonal line on this (log-log) plot. This represents, for a given civilization power consumption (y axis), the time scale over which it is maintainable (x axis). For renewable sources, the limiting fac... | <urn:uuid:ee7d0536-0889-4061-85bf-090d1f7dc3ad> | 3.40625 | 1,203 | Personal Blog | Science & Tech. | 58.988019 |
Romeo Gacad / AFP - Getty Images
Rock formations are seen in Kabui Bay in Raja Ampat, eastern Indonesia's Papua region, in October 2011.
RAJA AMPAT, Indonesia — Throughout time, explorers have combed the farthest reaches of the world for that one shot of discovering new life.
Dr. Mark Erdmann has taken that shot 89 tim... | <urn:uuid:e78e7688-f0ba-401e-9bd4-846698ae8176> | 2.78125 | 2,552 | Audio Transcript | Science & Tech. | 46.485242 |
Science Fair Project Encyclopedia
Quercitron is a yellow dye obtained from the bark of the Black oak (Quercus velutina), a fine forest tree indigenous in North America. The name is a shortened form of quercicitron, from Latin quercus, oak, and citron, lemon, and was invented by Dr Edward Bancroft (1744-1821), who by ac... | <urn:uuid:0da3dee9-d922-4880-b68c-8d131f0167fd> | 3.390625 | 595 | Knowledge Article | Science & Tech. | 34.795027 |
Managing database operations using ADO and C++, Part 1: Introduction to SQLby Patrick Mancier
For this article we will be using some very simple SQL tables and procedures. This is a brief encapsulation of SQL and more advanced concepts are beyond the scope of this article. Transact SQL (T-SQL) will be used in the synta... | <urn:uuid:598b52df-3fef-4569-be9e-6d24239b8d91> | 3.6875 | 1,590 | Tutorial | Software Dev. | 32.896843 |
Without a doubt, the Curiosity rover’s landing—specifically, the EDL or Entry Descent Landing phase—was a nail-biter. Geeks everywhere, especially NASA JPL engineers in California, watched and waited to learn the fate of the Curiosity on the surface of Mars.
In fact, the world had to wait roughly 14 minutes—the time it... | <urn:uuid:363ea454-1c2c-4460-a84a-2da8fedf5c9f> | 3.515625 | 395 | Personal Blog | Science & Tech. | 44.710828 |
|Aug6-12, 10:36 AM||#1|
Effect of moment of inertia on rolling distance
Hi everyone, good day. this might be a simple question, but I need someone to check my answer.
A disk and a hoop, of same mass and same diameter, is first giving a torque (same amount of torque for both) then the torque is removed (the torque is ac... | <urn:uuid:6d46bbef-e35e-4187-abb2-10b559f8fcc7> | 2.90625 | 592 | Comment Section | Science & Tech. | 58.439668 |
For a slick, supple mouthfeel, there’s nothing like a suspension of fine droplets of oil in water (or vice versa)—what scientists call an emulsion. Cream, butter and chocolate are emulsions, as are gravy, vinaigrette and cheese. But when an emulsion breaks, the results can get ugly: a layer of clear fat floating on top... | <urn:uuid:f1236b51-78b2-4d41-9f76-198b44fe640c> | 2.765625 | 584 | Truncated | Science & Tech. | 47.190514 |
Another "supermoon" is in the offing. The perigee full moon on May 5, 2012 will be as much as 14 percent bigger and 30 percent brighter than other full moons of 2012.
Dr. James Garvin, chief scientist at NASA's Goddard Space Flight Center, answered questions regarding the supermoon phenomenon in a 2011 interview.
Quest... | <urn:uuid:2e5eb8f8-ada2-4fb3-9bf4-931b0ed52439> | 3.578125 | 504 | Q&A Forum | Science & Tech. | 38.498421 |
A superconducting body will repel a nearby magnet. The repulsion is due to the perfect diamagnetism resulting from the Meissner effect. A small magnet will float above a superconducting disk at an equilibrium position over the disk center, stable against lateral displacements. It is not intuitively obvious why the pote... | <urn:uuid:32f9003b-e809-41fe-9537-697ec4d642b5> | 3.59375 | 274 | Academic Writing | Science & Tech. | 34.206701 |
The following HTML text is provided to enhance online
readability. Many aspects of typography translate only awkwardly to HTML.
Please use the page image
as the authoritative form to ensure accuracy.
Advancing the Science of Climate Change
to dominate coastal ice losses. Numerical modeling (Nick et al., 2009) further s... | <urn:uuid:64582e8e-db0f-4601-a2e6-c7f28eda9e56> | 3.828125 | 601 | Knowledge Article | Science & Tech. | 44.015359 |
But what are the implications of exceeding a CO2 concentration of 400 ppm?
Some climate change skeptics will be quick to highlight the scientific evidence that shows the atmospheric CO2 has been at this level and higher on the past. They are absolutely correct. Somewhere in the region of three to five million years ago... | <urn:uuid:4b9b07dc-0266-4d15-b9aa-c1b6c5ffb00d> | 3.625 | 657 | Personal Blog | Science & Tech. | 48.587917 |
Can you fit polynomials through these points?
Charlie likes tablecloths that use as many colours as possible, but insists that his tablecloths have some symmetry. Can you work out how many colours he needs for different tablecloth designs?
Many numbers can be expressed as the difference of two perfect
squares. What do ... | <urn:uuid:7951b07a-18be-4697-9ab1-58d8afc04506> | 3.15625 | 365 | Content Listing | Science & Tech. | 63.911144 |
RSS (Environment and Nature Dr Karl web feed) Dr Karl's Great Moments In Science › Environment and Nature
Wednesday, 1 May 2013
Explore more Environment and Nature
Tuesday, 27 November 2012 28
Rapid loss of Arctic sea ice - 80 per cent has disappeared since 1980 - is not caused by natural cycles such as changes in the ... | <urn:uuid:ede4eb4b-3ed2-4849-92c0-3e26ec59b010> | 2.796875 | 444 | Content Listing | Science & Tech. | 69.185 |
Science Fair Project Encyclopedia
The Magellan spacecraft carried out a mission from 1989-1994, orbiting Venus from 1990-1994.
It was named after the sixteenth-century Portuguese explorer Ferdinand Magellan. Magellan was the first planetary spacecraft to be launched by a space shuttle when it was carried aloft by the s... | <urn:uuid:58960149-3b81-4432-9bbc-2c221a44e5bc> | 4.21875 | 2,035 | Knowledge Article | Science & Tech. | 42.473706 |
Submitted by kfesenma on Fri, 2012-01-13 08:00
A team of researchers at Caltech has devised a new method for making complex molecules. The reaction they have come up with should enable chemists to synthesize new varieties of a whole subclass of organic compounds called nitrogen-containing heterocycles, thus opening up ... | <urn:uuid:e0a9a53e-9234-4767-a8e3-34c9135647ff> | 2.9375 | 1,028 | Content Listing | Science & Tech. | 42.372126 |
|Problem Set #12||Answers||February 6, 1998|
Carboxylic Acid Derivatives
Ege has reams of exciting problems at the end of chapters 14 and 15. Try tackling, for example, the following.
14.41, 14. 39
15.21, 15.22, 15.25, 15.32, 15.34, 15.43, 15.44.
1.In addition you need to practice writing mechanisms. Take the transform... | <urn:uuid:e8d35007-c0dd-4c9a-9667-24a7f44e8243> | 2.71875 | 574 | Tutorial | Science & Tech. | 68.960321 |
|Suppose you collect a sample of 11-locus Y-chromosome haplotypes
from 100 men and every haplotype in the sample is
different. We know that the various loci are linked, so it
would not be valid to estimate the population frequency of a
haplotype by assuming the "multiplication rule" most haplotypes
figure to be more co... | <urn:uuid:82dd3a63-a601-408e-8585-403690286d11> | 2.984375 | 465 | Q&A Forum | Science & Tech. | 56.944314 |
php is a scripting language that has to be interpreted. this is done through server software. If you wish to use php on a winxp machine, you'll have to ensure that some form of server software is runiing (iis is most common for windows). Then you'll have to install the php interpreter, put the files in the localhost di... | <urn:uuid:fe9393e7-7875-4a6d-9ee3-ab830c178e08> | 2.75 | 209 | Comment Section | Software Dev. | 56.982679 |
[Haskell-cafe] The simple programming language,
juventino_85 at hotmail.com
Sun Mar 26 09:17:41 EST 2006
if somebody can help me wid this i wil b realy thankful
Finally, we come to the program. The simple programming language,
which includes loops, conditionals and sequential composition will be
a datatype in Haskell.
... | <urn:uuid:3c9ff51f-136a-4585-b5d0-bcfa6ca1f669> | 3.53125 | 630 | Comment Section | Software Dev. | 46.110045 |
Tuesday, September 2, 2008 01:12 AM
SOAP: Simple Object Access Protocol, is a protocol to communicate with a web service. SOAP is a xml which travels over http. SOAP xml can be a request or response.
WSDL: Web Servivce Discription Language, again this is a xml which describes about the web service. What kind of methods... | <urn:uuid:a6a9070c-55ad-4c20-9bf9-72046045a42e> | 3.328125 | 177 | Comment Section | Software Dev. | 53.167886 |
By Gustavo Arellano
By Aimee Murillo
By Matt Coker
By Vickie Chang
By Matt Coker
By LP Hastings
By Michael Goldstein
By R. Scott Moxley
With all the talk about global warming, you'd think that summer in Southern California would be hotter than ever. But anyone who lives within 10 miles of the ocean knows that every sum... | <urn:uuid:2c038889-7c1f-4e83-88d6-d512c5d2207b> | 3.265625 | 1,154 | Audio Transcript | Science & Tech. | 53.437165 |
Get flash to fully experience Pearltrees
Only 29 percent of the world surface is land. The rest is ocean, home to the marine lifeforms. The oceans average four kilometers in depth and are fringed with coastlines that run for nearly 380,000 kilometres.
This animation uses Earth science data from a variety of sensors on ... | <urn:uuid:bae13f71-0c48-46ab-a19b-e12b546eee79> | 3.46875 | 445 | Content Listing | Science & Tech. | 41.898984 |
Climate Control Is Coming (Apr, 1958)
The catalog of techniques on the third page just looks like a list of environmental disasters nowadays.
Climate Control Is Coming
If Spain could have subdued the devastating storm that swept its Armada from the English Channel in July 1588. would all the Americas be speaking Spanis... | <urn:uuid:91000d42-d9c8-45ef-941d-1039783d1bc1> | 2.890625 | 1,919 | Personal Blog | Science & Tech. | 47.900006 |
|Types of Flies
Types of Flies
Types of Insects
Small-headed flies (Acroceridae family) go against the grain of stereotypical fly behavior.
Unlike many other fly families, most adult small-headed flies are flower feeders. They are known for their extended proboscis. The above picture partially shows the proboscis reach... | <urn:uuid:8977c612-7c9d-4e01-b635-6ba4f8917759> | 3.046875 | 143 | Knowledge Article | Science & Tech. | 43.834543 |
Happy weekend, dear readers. My math classes are currently studying surface area and volume of solids and we came across the conundrum of cylinder volume. How oddly counter-intuitive is it, that a short, seamingly smaller cylinder, can actually hold more capacity than a taller, skinnier cylinder? Hence the video above,... | <urn:uuid:bdb8709a-7c90-4ef6-839a-daf199ea3237> | 3.515625 | 1,090 | Personal Blog | Science & Tech. | 68.521617 |
Two complementary radar sounder instruments work together to discover hidden Martian secrets. They are the Mars Advanced Radar for Subsurface and Ionospheric Sounding (MARSIS) on the European Space Agency's Mars Express orbiter and the Shallow Subsurface Radar (SHARAD) on NASA's Mars Reconnaissance Orbiter.
MARSIS was ... | <urn:uuid:e759a25a-73b6-45e3-8d31-8b2806fe32d9> | 3.421875 | 335 | Knowledge Article | Science & Tech. | 30.966067 |
I have the theory that: if you drive a vehicle into a static, unbreakable wall, you will feel the same G-force and get the same injuries as if you would drive into your exact copy but mirrored (same car, weight, velocity, angle) head to head.
Everybody [says] there would be more energy transferred to the drivers and mo... | <urn:uuid:afcc907f-2832-4174-8644-d9f1e2296df3> | 2.6875 | 1,384 | Comment Section | Science & Tech. | 47.568224 |
>I am fasinated with whales. I have got lots of information about whales
>but I haven' t got any about what whales evolved from. I have been
>watching walking with beasts and it told us a little about the earliest
>whales in programme 1 but I can't remember the information about them.
>Please send me all the informatio... | <urn:uuid:080e1d48-5533-48f7-8d5f-d898f008e5cb> | 2.96875 | 867 | Comment Section | Science & Tech. | 42.709504 |
The beetle order embraces more species than any other group in the animal
kingdom. At least 250,000 species are known, more than one-quarter of all
animal species. About 160 families exist; although some contain only 1
or 2 species, others, such as the weevil (q.v.) , contain 30,000 species,
far more, for example, than... | <urn:uuid:e3266b16-bd5b-46b2-bd30-e215085efb43> | 3.84375 | 671 | Knowledge Article | Science & Tech. | 46.979677 |
CAS Lectures Spring 2013
The CAS Lecture Series is an opportunity for the general public to learn more about astronomy than the weekly observing sessions permit. The series consists of several talks given by CAS members or outside speakers on a variety of topics in astronomy or space exploration. In the event that the ... | <urn:uuid:baf451a2-97ed-4146-8e0d-2385d0cd3e31> | 2.75 | 1,158 | Content Listing | Science & Tech. | 42.111406 |
P. Philip Thomson
John I. Dunlop
Dept. of Appl. Phys., School of Phys., Univ. of New South Wales, Sydney 2052, Australia
Mathematical models for characterizing the propagation of acoustic waves in shallow water require knowledge of such acoustic properties as dilatational velocity, attenuation constant, shear velocity,... | <urn:uuid:097fb2d4-e31c-46be-9a28-714b1ff34a23> | 2.71875 | 266 | Academic Writing | Science & Tech. | 24.630313 |
The term climate change refers to the variation in the Earth’s global and regional climate. The changes may come from internal processes, external forces or human activities. Anthropogenic climate change is climate change caused by human activity. In the context of environmental policy “climate change” describes the on... | <urn:uuid:1b2d675a-e98a-484a-b4e8-d5a4ff514639> | 3.46875 | 320 | Content Listing | Science & Tech. | 31.026924 |
The Washington Invasive Species Council evaluated more than 700 invasive species in and around Washington to analyze which posed the greatest threat to the state’s environment, economy, and human health. The council selected 50 priority species for action in the short term.
To do the analysis, the council developed an ... | <urn:uuid:5595075e-1843-4e1a-a1ad-9ea96dad1d61> | 3.265625 | 169 | Knowledge Article | Science & Tech. | 35.863793 |
In most microscopy applications, the sample is a thin slice or surface through a three-dimensional specimen, and the proper interpretation of the structure measurements is based on stereological rules. Modern stereological procedures emphasize the efficient and unbiased sampling of the specimen, and make use of relativ... | <urn:uuid:cdac67b8-c54b-4230-96eb-9bc86385eb30> | 3.671875 | 1,514 | Knowledge Article | Science & Tech. | 34.459354 |
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.PhET Physics
With this PHET simulation, you can earn great $$ working for the... | <urn:uuid:992df66c-408d-4ce3-8ddf-2039b56ab667> | 3.96875 | 951 | Tutorial | Science & Tech. | 58.432959 |
Skepticism About Lower Atmosphere Temperature Data
Posted on 8 January 2012 by dana1981
Note: This article was submitted to Forbes as a correction to the op-ed by James Taylor in question, but Forbes declined to publish it, so instead we're posting it here.
Forbes recently published an op-ed written by James Taylor of ... | <urn:uuid:7512ce90-f769-4e30-8f67-1fab9e2c20af> | 3.234375 | 1,192 | Personal Blog | Science & Tech. | 24.421051 |
This section provides a brief overview of processes and properties associated with global climate change. The general concepts found in this section are:
This section includes seven classroom activities.
The climate of planet Earth is unstable. Our evolutionary origins lie in the warm, relatively benign climate of equa... | <urn:uuid:1fb11633-2065-4075-9c11-c8fe7a674b5d> | 3.96875 | 1,105 | Tutorial | Science & Tech. | 32.429648 |
Kentucky Office of the State Entomologist
| Text Only |
If you are moving to Kentucky from an area that has gypsy moth please check out this website (YourMoveGypsyMothFree.com) to be sure you are compliant with Federal laws.
Why be so concerned with this
The European Gypsy Moth was deliberately introduced from Europe a... | <urn:uuid:f34d2b66-de7e-4e95-b1b1-6929f0d43fa8> | 3.28125 | 559 | Knowledge Article | Science & Tech. | 48.991806 |
In the early 70s — when the media rarely addressed the far-out notion of climate change (or if they did, they put quotes around phrases like “the greenhouse effect”) — scientists at Boulder’s National Center for Atmospheric Research were beginning to realize that people (insignificant though they generally seemed) migh... | <urn:uuid:182a5887-ac3a-4b7c-bdb7-8fb32f2351ba> | 3.125 | 285 | Personal Blog | Science & Tech. | 30.539894 |
Wild chilies make their seeds and fruits to propagate themselves. But chili seeds eaten by mammals tend to be chewed up, and even if they are not, they don't germinate successfully after passing through our digestive systems, and even if they did, mammals don't tend to transport seeds as far as birds would. So it is we... | <urn:uuid:dc0bfac8-04ea-4dab-abb9-b01945250732> | 2.890625 | 259 | Personal Blog | Science & Tech. | 55.097545 |
For each solar eclipse, an orthographic projection map of Earth shows the path of penumbral (partial) and umbral (total or annular) eclipse. North is to the top in all cases and the daylight terminator is plotted for the instant of greatest eclipse. The sub-solar point on Earth is indicated by a star shaped symbol.
The... | <urn:uuid:d645303f-b12c-4d9f-a854-cedf1296815a> | 3.8125 | 1,595 | Knowledge Article | Science & Tech. | 48.087921 |
Comprehensive DescriptionRead full entry
BiologyInhabit outer reef slopes to depths of at least 50 m, inner reef flats and lagoons. Juveniles common in weedy areas of estuaries (Ref. 4919). Also found in coastal bays and estuaries, usually near rocky reef or on sand-stretches between reefs with low algae-rubble reef to... | <urn:uuid:f6d9f10f-5963-406b-a985-e4f31b0b096c> | 3.171875 | 180 | Knowledge Article | Science & Tech. | 50.996163 |
You can read through the entire section from the top or jump directly to a particular item by clicking on a list entry:
Imagine a very small sphere (the nucleus, shown in yellow) at the center of another sphere about 100,000 times larger in diameter. The nucleus contains the protons and neutrons in a very small volume.... | <urn:uuid:e9f22baa-12bb-47ec-a96e-28b123c7a7a3> | 4.3125 | 1,197 | Knowledge Article | Science & Tech. | 46.64047 |
Instantiating an Object
An Object is an instance of a Class. After creating an Object, you can access the member variables and methods of the object and assign values to them. An Object is declared in the same way that a variable of a primitive type is declared.
String sampleStr; //This code is used to define an object... | <urn:uuid:3f323f34-5c08-4a5a-a865-51ddc8aa58fa> | 4.0625 | 783 | Documentation | Software Dev. | 45.613663 |
Even though the frequency of bunch crossings at the interaction point inside LHCb is 40MHz, only about 10MHz of events will have some particles from the proton-proton collision inside the acceptance of the detector.
The rate of events with all the particles from a B decay contained in LHCb corresponds to about 15kHz. H... | <urn:uuid:e5447a5b-4290-4cf5-b196-1446f43de983> | 2.78125 | 708 | Documentation | Science & Tech. | 39.644849 |
There is no need to create a file on the filesystem to get started with openpyxl. Just import the Worbook class and start using it
>>> from openpyxl import Workbook >>> wb = Workbook()
A workbook is always created with at least one worksheet. You can get it by using the openpyxl.workbook.Workbook.get_active_sheet() met... | <urn:uuid:5d27c986-3239-4af7-b106-07e44dc204c0> | 3.09375 | 1,565 | Tutorial | Software Dev. | 90.33311 |
Archive for the ‘Science Experiments at Home’ Category
Question: Why does the carbonation in coke affect the height of the fizz when added with mentos?
I am doing a science experiment and need this explained for a paper.
Answer: All details are on their home page
Mentos And Coke Experiment
Question: physics vday dorky!... | <urn:uuid:f1b2f265-2d0e-4b07-9dd7-48ab9f09fe71> | 2.78125 | 626 | Comment Section | Science & Tech. | 59.709146 |
What's the Difference Between Hibernation and Sleep?
Biologists love to argue about how to classify things, and hibernation is no different. A common definition of hibernation is a long-term state in which body temperature is significantly decreased, metabolism slows drastically and the animal enters a comalike conditi... | <urn:uuid:5c8f8592-3bfc-4610-8616-847ed1247b77> | 3.265625 | 543 | Knowledge Article | Science & Tech. | 34.854731 |
Notes: 12494 / 2 months ago
this is a view of saturn’s north polar region, taken by cassini’s imaging science subsystem (ISS) on february 26, 2013. you can see the rings in the top of this image as well as its mysterious hexagon.
Notes: 3 / 1 year ago
Before sunrise on March 27th, sky watchers up and down the eastern s... | <urn:uuid:4856c665-2b2a-410e-ada5-0b9daf7cf2f9> | 3 | 199 | Content Listing | Science & Tech. | 46.378387 |
Science Fair Project Encyclopedia
- For the Bernstein polynomial in D-module theory, see Bernstein-Sato polynomial.
In the mathematical subfield of numerical analysis, a Bernstein polynomial, named after Sergei Natanovich Bernstein, is a polynomial in the Bernstein form, that is a linear combination of Bernstein basis ... | <urn:uuid:6f92f870-00f6-481d-ba9e-d7d9d7b3bc70> | 3.515625 | 707 | Knowledge Article | Science & Tech. | 47.361257 |
The WRITE_SRF procedure writes an image and its color table vectors to a Sun Raster File (SRF).
WRITE_SRF only writes 32-, 24-, and 8-bit-deep rasterfiles of type RT_STANDARD. Use the UNIX command
to convert these files to 1-bit deep files. See the file
for the structure of Sun rasterfiles.
This routine is written in t... | <urn:uuid:41940187-97c7-40ce-b74b-a7e4831a5dbb> | 2.953125 | 234 | Documentation | Software Dev. | 64.567652 |
Effects of Suspended Sediment and Burial on Scleractinian Corals From West Central Florida Patch Reefs
Authors: Rice, Stanley A.; Hunter, Cynthia L.
Source: Bulletin of Marine Science, Volume 51, Number 3, November 1992 , pp. 429-442(14)
Abstract:The distribution and abundance of eight species of endemic scleractinian ... | <urn:uuid:ce455e11-c7cc-46c8-98be-2da2d7f9ef54> | 3.21875 | 520 | Academic Writing | Science & Tech. | 27.144573 |
Posted by Phil on Saturday, January 9, 2010 at 8:27pm.
Well, downward forces are W, and upward forces are his Pull, and tension.
So his pull + Tension=W on the tire side.
On the other side, tension=Pulling force
do the math.
Ok, I think I got it. Are these free body diagrams correct? (ignore the dots)
.T.....(This tens... | <urn:uuid:89522b7c-b335-4ac0-9b37-0526ba921ae2> | 3.734375 | 433 | Comment Section | Science & Tech. | 92.380028 |
First Use of Mars Rover Curiosity's Dust Removal Tool - This image from the Mars Hand Lens Imager (MAHLI) on NASA's Mars rover Curiosity shows the patch of rock cleaned by the first use of the rover's Dust Removal Tool (DRT).
The tool is a motorized, wire-bristle brush on the turret at the end of the rover's arm. Its f... | <urn:uuid:5b9b7b94-3598-4de9-9b43-404ab7f50d1d> | 3.546875 | 217 | Truncated | Science & Tech. | 80.610947 |
Researchers are developing a solar collector to turn roads and parking lots into cheap sources of electricity and hot water. "Asphalt has a lot of advantages as a solar collector," says Rajib Mallick of Worcester Polytechnic Institute. "For one, blacktop stays hot and could continue to generate energy after the sun goe... | <urn:uuid:5bf5738d-cd35-4e76-809f-4b7043654bfc> | 2.859375 | 180 | Personal Blog | Science & Tech. | 47.171709 |
Nature Bulletin No. 661-A january 7, 1978
Forest Preserve District of Cook County
George W. Dunne, President
Roland F. Eisenbeis, Supt. of Conservation
There was a time when ice, cut on frozen ponds and lakes, was
transported by fast clipper ships from New England to New Orleans
where it was worth its weight in gold. N... | <urn:uuid:bcca196b-2a3f-4576-b1e8-3055acae0b83> | 3.84375 | 783 | Knowledge Article | Science & Tech. | 51.948033 |
Feb. 22, 2008 Concerned that energy system transformations are proceeding too slowly to avoid risks from dangerous human-induced climate change, many scientists are wondering whether geoengineering (the deliberate change of the Earth's climate) may help counteract global warming.
Sulfate aerosols, commonly released by ... | <urn:uuid:1dab3abc-510a-474e-aa5e-2f91544012d9> | 3.875 | 390 | Truncated | Science & Tech. | 29.557129 |
"Each time following an eruption of Iceland’s Eyjafjallajokull volcano, it’s mighty neighbor, Katla, has erupted shortly afterward. Eyjafjallajokull and Katla are separated by 27 km (17 mi) and are thought to have interconnecting magma channels. Eyjafjallajokull erupted on April 14, 2010.
Katla (named after an Icelandi... | <urn:uuid:f9bcb8f3-ffde-49fb-aee2-2a336e29a63c> | 3.796875 | 633 | Personal Blog | Science & Tech. | 51.942179 |
If you're new to Python
A VPython tutorial
Pictures of 3D objects
Choose an object:
Work with objects:
Windows & Events:
What's new in Visual 5
The following attributes apply to all VPython objects:
visible If False,
object is not displayed; e.g. ball.visible = False
frame Place this object into a specified frame, as i... | <urn:uuid:bc54aed6-ad90-4cca-96a9-f8010218b558> | 3.671875 | 674 | Tutorial | Software Dev. | 50.702457 |
Go Up to Working with sockets Index
Sockets provide one of the pieces you need to write network servers or client applications. For many services, such as HTTP or FTP, third party servers are readily available. Some are even bundled with the operating system, so that there is no need to write one yourself. However, whe... | <urn:uuid:7a3adf00-3b78-4df7-a4c4-5f72b60478b4> | 3.046875 | 152 | Documentation | Software Dev. | 33.161358 |
Meteoroids are the smallest particles orbiting the sun, and most are no larger than grains of sand. From years of studying the evolution of meteor streams, astronomers have concluded that clouds of meteoroids orbiting the sun were produced by comets. Meteoroids can not be observed moving through space because of their ... | <urn:uuid:d3473873-c6f8-4148-8078-7fb4afea4e2a> | 4.34375 | 191 | Knowledge Article | Science & Tech. | 43.170707 |
Library Home || Primary || Math Fundamentals || Pre-Algebra ||
Algebra || Geometry || Discrete Math || Trig/Calc
|Geometry, difficulty level 3. Two congruent circles are drawn, and four congruent chords are drawn, two in each circle, all perpendicular to the diameter through both circles. The distance between the two f... | <urn:uuid:66b88ef9-aba1-477c-af79-6553ab94da8e> | 3.234375 | 167 | Tutorial | Science & Tech. | 46.299386 |
P-Value/ One-or Two Tailed.
Having a tough time with me homework on P-Value. If anyone could help solve this?
According to an article in The New York Times, 19.3% of New York City adults
smoked in 2003. Suppose that a survey is conducted this year. 8 out of 80 randomly chosen New York City residents reply that they smo... | <urn:uuid:6b56d338-fe79-4c84-a764-4c11cd681bee> | 2.703125 | 461 | Q&A Forum | Science & Tech. | 111.204224 |
||Resource Management Issues:
Overview of the issue:
The Sanctuary provides many opportunities for observation of nature, including
whale watching, bird watching, pinniped pupping and haulout activity,
and viewing of sea otters. Rocky shorelines provide pedestrians opportunities
to view the flora and fauna associated w... | <urn:uuid:c24681dd-7b72-4dea-b1d3-654a46eb73a6> | 3.265625 | 1,868 | Knowledge Article | Science & Tech. | 25.050131 |
Multiples of Nine, Digit Sum
why when a number when times by 9,the numbers in the
answers when added until a single digit is found,the number is
9?..eg. 538 x 9 = 4842,4+8+4+2=18,1+8=9...and why its only for the
number 9 and not for other numbers?
Think of the number 531, for example. You can write 531 as
500 + 30 + 1 ... | <urn:uuid:f0851a8d-6255-4e47-bb5c-88fa7192ef56> | 3.296875 | 1,124 | Q&A Forum | Science & Tech. | 89.133014 |
A radio one ten-thousandth of the diameter of a human hair is now picking up local radio stations.
at the University of California, Berkeley, have built a radio out of a
single carbon nanotube, which is 100 billion times smaller than the
first commercial radios. The nanotube radio requires only a battery and
earphones ... | <urn:uuid:346f7d74-b474-4351-aa1f-170579a76a3c> | 4 | 209 | Truncated | Science & Tech. | 41.233833 |
by Dan Lashof, via NRDC’s Switchboard
We dump billions of tons of carbon pollution into the atmosphere each year. As a result, the concentration of carbon dioxide has increased by 40%. Excess carbon dioxide traps excess heat in the atmosphere. Excess heat causes extreme heat waves, droughts, and storms.
And that’s what... | <urn:uuid:f81d599a-081c-4daa-82f8-7506c23ae925> | 3.546875 | 563 | Nonfiction Writing | Science & Tech. | 50.813032 |
Number 213 (Story #2), February 7, 1995 by Phillip F. Schewe and Ben Stein|
INDIRECT EVIDENCE FOR NEUTRINO MASS comes from a Los Alamos experiment in which muon antineutrinos are perhaps transmuting into electron antineutrinos in a process called "neutrino oscillation." Los Alamos uses a proton beam to produce pions wh... | <urn:uuid:dcd64632-35c2-4e78-9809-40c30af2fca5> | 3.890625 | 443 | Nonfiction Writing | Science & Tech. | 31.784252 |
Nacreous clouds are very high, 9-16 miles (15 – 25 km) in the stratosphere. They catch sunlight long before ground level sunrise and after sunset to glow eerily with unbelievably bright electric colours. They twist, stretch and curl majestically as lower dark tropospheric clouds hurry beneath.
Their tiny ice crystals d... | <urn:uuid:2cdaa4e7-a562-45ad-9398-29563dd0167e> | 3.375 | 284 | Knowledge Article | Science & Tech. | 44.03105 |
Everyone programs console applications one time or the other. This
programming is more prevalent when people are learning to program, especially
while learning the DOS based C/C++ programming. However, when one migrates to
Windows programming, console application development takes a back seat. But the
Win32 console dev... | <urn:uuid:656f6427-8ea1-4a2a-b101-c8fbd1dfe88d> | 2.734375 | 1,154 | Documentation | Software Dev. | 45.317088 |
On Friday July 24, 2009, multiple significant hail storms moved southeastward across northeast Iowa, southwest Wisconsin, and northwest Illinois. These hail storms produced extremely large hail, and copious amounts of hail, which led to some concentrated swaths of damage to vegetation. In some areas, most of the crops ... | <urn:uuid:015270b8-007f-47b0-a788-84c9b73e88e9> | 3.40625 | 397 | Knowledge Article | Science & Tech. | 39.309835 |
M E R C U R Y
CharacteristicsMercury is the first planet of our Solar System and next to the Sun, it is to only 0.387 astronomical units (UA) but has an eccentric orbit of 0,20. Form leaves from rocky inner planets and its diameter is of only 4,879 km. To the being so small and next to the Sun it is difficult to locate... | <urn:uuid:f4d9d069-bed5-4192-8965-5fdde2576560> | 3.375 | 583 | Knowledge Article | Science & Tech. | 67.184512 |
About half the American population receives its drinking water from lakes and rivers. Use this interactive map to find out where your water comes from.
Variable Rate Irrigation (VRI) technology lets farmers avoid waste water with the push of a button.
Healthy rivers are ever-changing, rising and falling as seasons come... | <urn:uuid:99281c57-c19e-4e3f-9d23-20ebaaf1505b> | 3.171875 | 162 | Content Listing | Science & Tech. | 41.718262 |
The following example identifies two of the <th> elements as headers for columns, and two of the <td> elements as headers for rows:
The scope attribute has no visual effect in ordinary web browsers, but can be used by screen readers.
The <td> scope attribute is not supported in HTML5.
The scope attribute defines a way ... | <urn:uuid:b3ea0fc0-499a-43a1-96ee-40bd7dc4444d> | 2.8125 | 188 | Documentation | Software Dev. | 52.212 |
Tapanila, L., and E. M. Roberts. 2012. The earliest evidence of holometabolan insect pupation in conifer wood. PLoS ONE 7(2): e31668. doi:10.1371/journal.pone.0031668.
The pre-Jurassic record of terrestrial wood borings is poorly resolved, despite body fossil evidence of insect diversification among xylophilic clades s... | <urn:uuid:ca65e3d3-bf3e-4568-a883-98c07018ba1f> | 3.109375 | 382 | Academic Writing | Science & Tech. | 20.8725 |
Wednesday, January 28, 2009
A term often used in meteorological circles is "dirty ridge." No, this is not some kind of meteorological pornography. Rather its when there is a "ridge" or area of high pressure that is not strong enough to keep us dry and cloud free. Weather disturbances with sufficient amplitude can injec... | <urn:uuid:6f241f88-2c51-45ff-bd6e-8c5af2ee97e1> | 3.015625 | 272 | Personal Blog | Science & Tech. | 71.003 |
There has been much confusion of late over the definition of what a Domain Event is. I was writing some stuff that will go into both the course manual and the book and figured that it might be timely to put it up on the blog as well.
An event is something that has happened in the past.
All events should be represented ... | <urn:uuid:9391a14b-91c6-4303-acc9-9c3f97a420f3> | 3.21875 | 1,531 | Personal Blog | Software Dev. | 45.460242 |
The south polar layered deposits are a stack of layered ice up to 3000 meters (9800 feet) thick which is similar to terrestrial ice sheets. In places, this stack extends up to 1100 kilometers (680 miles) from the pole and many of the impact craters surrounding this ice-sheet appear to be filled with mounds of similar i... | <urn:uuid:1778d91f-0fbb-40bd-9ab6-19a7ffc0bf9c> | 3.296875 | 325 | Knowledge Article | Science & Tech. | 51.005137 |
Pierre Bezukhov writes "Emissions from thawing permafrost may contribute more to global warming than deforestation this century, according to commentary in the journal Nature. Arctic warming of 7.5 degrees Celsius (13.5 degrees Fahrenheit) this century may unlock the equivalent of 380 billion tons of carbon dioxide as ... | <urn:uuid:b3ab824b-c97a-4244-a60e-71cdd70b004c> | 3.03125 | 166 | Truncated | Science & Tech. | 36.678424 |
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Author: John D. Barrow
What is dark energy?
What's the mysterious stuff that makes up 70% of our Universe?
Outer space: Are the constants of nature really constant?
Are the unchanging features of the Universe really unchanging?
What happened before the Big Bang?
Di... | <urn:uuid:88409a6a-cf32-47ac-89a0-1731241313fd> | 3.015625 | 353 | Content Listing | Science & Tech. | 55.468077 |
Space & Tech News: Predicting Meteorite Impacts
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© 2013 National Geographic; Video & photos courtesy NASA
Predicting Meteorite Impacts
February ... | <urn:uuid:adc87ede-e082-430f-a5c3-a33e72b4a3e6> | 2.828125 | 132 | Truncated | Science & Tech. | 43.93596 |
Science Fair Project Encyclopedia
The kilowatt-hour (symbol: kW·h) is a unit for measuring energy. It corresponds to one kilowatt (kW) of power being used over a period of one hour. Since a watt is an amount of energy over a timespan (joule per second), multiplying it with a timespan gives an energy amount (1 J/s × 1 s... | <urn:uuid:4a405d77-51f9-4d62-9db4-089f59501839> | 4.21875 | 532 | Knowledge Article | Science & Tech. | 71.799694 |
Revealing the Red Planet's secrets
The High Resolution Imaging Science Experiment onboard the Mars Reconnaissance Orbiter continues to amaze scientists with its detailed images.
December 19, 2007
|Since it reached its final orbit around Mars in late 2006, the Mars Reconnaissance Orbiter (MRO) spacecraft has been studyi... | <urn:uuid:9f51ca56-4426-4a7c-88c0-af52a200a528> | 3.265625 | 293 | Truncated | Science & Tech. | 36.331919 |
Copyright © 2009 Elsevier Ltd All rights reserved.
Current Biology, Volume 19, Issue 19, R892-R893, 13 October 2009
CorrespondenceAdd/View Comments (0)
Herbivory in a spider through exploitation of an ant–plant mutualism
1 Department of Biology, Villanova University, Villanova, PA 19085, USA
2 Heller School for Social ... | <urn:uuid:080553d4-7b5a-4a31-8029-779d99f738e2> | 3.15625 | 1,776 | Academic Writing | Science & Tech. | 39.025435 |
Australia State of the Environment Report 2001 (Theme Report)
Prepared by: Jonas Ball, Sinclair Knight Merz Pty Limited, Authors
Published by CSIRO on behalf of the Department of the Environment and Heritage, 2001
ISBN 0 643 06750 7
The pressures on inland waters can be divided into two main categories. The first categ... | <urn:uuid:76aa0997-e36b-48ca-8f8e-7668e2079aa0> | 3.546875 | 1,964 | Knowledge Article | Science & Tech. | 21.866419 |
Pi Day is 3/14, and I’m sure you’re planning to celebrate it in your classroom.
I’ve got a collection of links for you, all of which can be used spontaneously, without prep, in some little snippet of time left over during the day. Then, when you’re home with the family, you can pull out all the stops, bake pi(e)s, spen... | <urn:uuid:2d843897-31e9-4d59-91a6-ba746cf007f5> | 2.8125 | 588 | Personal Blog | Science & Tech. | 69.511317 |
- Public Outreach
- NMDB Brochures
- Cosmic rays : high energy particles from the Universe
- Solar Wind, Heliosphere, and Cosmic Ray Propagation
- Cosmic rays and the Earth
- Impact: Technological and biological effects of cosmic rays
- Neutron monitor network : fundamental research and applications
- A few technical d... | <urn:uuid:8d84c217-041b-448a-9f8c-aea44debfe16> | 3.71875 | 1,029 | Knowledge Article | Science & Tech. | 28.837031 |
|Dec21-12, 09:36 PM||#1|
every reaction requires its reactants to have enough actvation energy in order to start the chemical reaction.sometimes, extra energy is provided in the form of heat. so the reactants take in heat from the surroundings and have enough energy to break old bonds and form new bonds. when they brea... | <urn:uuid:3238a4fe-d2f8-4638-8c50-ebf061c3fc52> | 3.578125 | 456 | Comment Section | Science & Tech. | 58.671053 |
High Energy Cosmic Rays and the Origin of Life
|Sep12-12, 08:59 AM||#1|
High Energy Cosmic Rays and the Origin of Life
The advocators of Darwinís theory of evolution discover that it is difficult for normal evolution rate alone to form the species diversity now. What factor(s) accelerated the origin of life and species... | <urn:uuid:82427bd2-b25e-4532-9032-9b695d35c9f3> | 3.21875 | 3,237 | Comment Section | Science & Tech. | 33.982727 |
National Institutes of Health researchers have used the popular anti-wrinkle agent Botox to discover a new and important role for a group of molecules that nerve cells use to quickly send messages. This novel role for the molecules, called SNARES, may be a missing piece that scientists have been searching for to fully ... | <urn:uuid:02bbc3c3-efaf-4811-a44c-572dcbbb1c63> | 2.75 | 1,858 | Content Listing | Science & Tech. | 30.998667 |
Sep 23, 2009 | 73
Population growth, now at roughly 78 million extra people per year, is the don't-go-there zone of modern environmentalism and political discourse.
But let's go there for the moment: The biodiversity crisis. The water crisis. The climate crisis. Lurking behind all these crises is at least one shared fa... | <urn:uuid:451f7833-d0f9-4df2-a705-d9da0df3cda2> | 2.984375 | 1,843 | Content Listing | Science & Tech. | 44.467743 |
Migratory Fish in Trouble
The Problem: dams and industrial practices have blocked spawning habitat and decimated migratory fish populations. Flows at main stem hydro-electric dams and canals, as well as industrial effluents and heated plant discharges into the river make this situation worse. Determined action is neede... | <urn:uuid:5ae813f9-4f17-4875-b9da-36608c81be30> | 3.703125 | 2,931 | Knowledge Article | Science & Tech. | 47.41513 |
Narendra, Ajay and Ramachandra, TV (2009) Remote detection and distinction of ants using nest-site specific LISS-derived Normalised Difference Vegetation Index. In: Asian Myrmecology, 2 . pp. 51-62.
Remote_detection.pdf - Published Version
Restricted to Registered users only
Download (417Kb) | Request a copy
This study... | <urn:uuid:474f77f6-31fb-4ce4-9294-0deab2b72c84> | 2.703125 | 452 | Academic Writing | Science & Tech. | 38.210042 |
IŽll try to explain this problem. Trying to solve this for the last 40minutes now.
Equation: y = x^(0,5)
The area under this equation starts to rotate around the X-axis and gives you the rotational Volume (B).
When calculating the above mentioned volume: Int: from (a = 0) to (b), There is a line from the point b parall... | <urn:uuid:9210ae88-42fe-4e67-a6cf-8183a3a61b44> | 3.015625 | 327 | Q&A Forum | Science & Tech. | 72.474231 |
4.2. Galactic magnetic field B and star formation SF
There is a body of literature connecting the radio synchrotron emission from spiral galaxies with their Far Infrared emission, i.e., Niklas et al. (1995), Hummel et al. (1988), Dickey and Salpeter (1984). The interpretation of this narrow relation often involves star... | <urn:uuid:454d7117-71b8-473a-be0e-502f4cd8e934> | 2.703125 | 168 | Knowledge Article | Science & Tech. | 52.468004 |
Story 4 - 18/2/2010
Is Light Slowing Down?
The speed of light is a universal constant — or is it? Some evidence seems to suggest it might actually be slowing down. Will we soon have to revise our cosmological beliefs?
Light. Is the speed of light changing over time? which evidence supports such hypotesis? and which cou... | <urn:uuid:34947a42-4e66-4e22-a904-21ced7e19174> | 3.4375 | 1,859 | Comment Section | Science & Tech. | 49.603371 |
Faint gamma-ray bursts on the horizon
Aug 4, 2004
Astronomers may have discovered a new class of gamma-ray bursts that are more powerful than supernovae but much weaker -- and more common -- than most "ordinary" gamma-ray bursts found so far. The claims are made by two separate teams of researchers, who used the INTEGR... | <urn:uuid:5976764a-63de-4949-972b-d9e28fb22703> | 3.9375 | 739 | Truncated | Science & Tech. | 41.804973 |
Progress in pure mathematics has its own tempo. Major questions may remain open for decades, even centuries, and once an answer has been found, it can take a collaborative effort of many mathematicians in the field to check
that it is correct. The New Contexts for Stable Homotopy Theory programme, held at the Institute... | <urn:uuid:78b16dc1-c40f-46de-a1e9-8f5fdbb8887d> | 3 | 451 | Content Listing | Science & Tech. | 51.155741 |
Threats to Endangered Wildlife ~ NASA Images of Deforestation in Virunga
Gorilla CD Field Report ~ NASA recently released some photos of Virunga National Park, comparing the forests from 1999 to 2008 in the northern sector of the park. The photos show significant deforestation along the borders. The rate of forest loss... | <urn:uuid:afb158f5-b0a8-427b-8e9a-5f4c0a843ce6> | 3.515625 | 832 | Knowledge Article | Science & Tech. | 37.799188 |
View your list of saved words. (You can log in using Facebook.)
Branch of physics concerned with the forces acting on bodies passing through air and other gaseous fluids. It explains the principles of flight of aircraft, rockets, and missiles. It is also involved in the design of automobiles, trains, and ships, and eve... | <urn:uuid:21ca8051-1267-493a-b2ea-f2322e0f6a5e> | 3.171875 | 154 | Structured Data | Science & Tech. | 49.621038 |