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Table of Contents
SUSE LINUX is available for several 64-bit platforms. This does not necessarily mean that all the applications included have already been ported to 64-bit platforms. SUSE LINUX supports the use of 32-bit applications in a 64-bit system environment. This chapter offers a brief overview of how this supp... | <urn:uuid:a06c0485-fb21-4e32-bcc4-21a5929168a8> | 2.9375 | 577 | Documentation | Software Dev. | 58.929562 |
The most common cause of flooding is when the volume of water exceeds the capacity of the river or stream
channel. Rivers are natural drainage channels for surface waters. Surface waters comprise two components:
runoff and base flow. Runoff is that part of precipitation that flows toward the rivers
or streams on the gr... | <urn:uuid:15582381-985f-4b1a-bcc2-fb61f1ace3a0> | 4.1875 | 2,812 | Knowledge Article | Science & Tech. | 43.802401 |
Mars Science Lab Project Manager and professor of geology at California Institute of Technology John Grotzinger presented new evidence of ancient habitability on Mars, based on the findings from the Curiosity rover, in a lecture on Thursday evening. On Tuesday, the Jet Propulsion Laboratory in Pasadena, Calif. announce... | <urn:uuid:e2592778-e05b-497b-a936-045463cd7847> | 4.03125 | 571 | Truncated | Science & Tech. | 34.750356 |
In the olden days, not only did we have to walk a mile in the chilling winds of a snowstorm to get to school (hey our grandparents had it rougher; they had to do it to get to day care), we also had to make programs without buttons and scrollbars. Now, of course, we have object-oriented programming. This article will in... | <urn:uuid:89e44130-f2a3-4683-a472-644c304a3eff> | 3.40625 | 437 | Tutorial | Software Dev. | 49.021814 |
Jupiter has a total of 63 known satellites. The four great moons of Jupiter were discovered by Galileo Galilei (1564–1642) in Jan. 1610, and are called the Galilean satellites after their discoverer. Their names are Io, Europa, Ganymede, and Callisto. Like our Moon, the satellites always keep the same face turned towar... | <urn:uuid:bf123219-547a-402e-b30e-4f47d0a9f0e5> | 3.375 | 153 | Knowledge Article | Science & Tech. | 36.084608 |
|MadSci Network: Engineering|
Most thermometers depend on the differential thermal expansion rates of materials to measure temperatures. That is, we all know that materials expand in heat and contract in the cold; what's less obvious is that different materials do so at different rates. The rate is called "coefficient ... | <urn:uuid:1063089e-e74b-4e39-8f60-8f9307bc4862> | 4.09375 | 1,879 | Tutorial | Science & Tech. | 57.757994 |
RAND_add, RAND_seed, RAND_status, RAND_event, RAND_screen - add entropy to
void RAND_seed(const void *buf, int num);
void RAND_add(const void *buf, int num, double entropy);
int RAND_event(UINT iMsg, WPARAM wParam, LPARAM lParam);
RAND_add() mixes the num bytes at buf into the PRNG state. Thus, if the data at buf are u... | <urn:uuid:1cf50e0a-7553-4cf1-bd07-f76ce83d2983> | 2.75 | 561 | Documentation | Software Dev. | 53.43465 |
The University of Oregon chemistry professor, plastics expert and public speaker isn't really a crusader, though, so much as a numbers guy who likes to help people make sustainable choices based on facts rather than trends or clever marketing. Tyler is well-versed in the technique known as "life cycle assessment," a wa... | <urn:uuid:a343e312-ee07-410a-94a6-1bf397367bf8> | 2.796875 | 993 | Audio Transcript | Science & Tech. | 61.185338 |
A laboratory experiment at NASA's Jet Propulsion Laboratory, Pasadena, Calif., simulating the atmosphere of Saturn's moon Titan suggests complex organic chemistry that could eventually lead to the building blocks of life extends lower in the atmosphere than previously thought. The results now point out another region o... | <urn:uuid:25072f39-e6fc-41df-b9e8-472dad06828a> | 2.8125 | 1,961 | Content Listing | Science & Tech. | 35.428536 |
Thank you for your feedback!
Abstract"Plastic made from milk" —that certainly sounds like something made-up. If you agree, you may be surprised to learn that in the early 20th century, milk was used to make many different plastic ornaments —including jewelry for Queen Mary of England! In this chemistry science project,... | <urn:uuid:43bac83e-67d5-48c5-b8b4-2106aeacc10d> | 3.109375 | 1,628 | Tutorial | Science & Tech. | 45.752565 |
Dec. 6, 2002 KINGSTON, R.I. – November 25, 2002 – When a property is suspected of having contaminated soil or groundwater, it is usually a lengthy and costly process to confirm the presence of pollutants and to delineate the extent of the contamination. Soon that process may be simplified considerably.
University of Rh... | <urn:uuid:b3d1140c-9945-4ffd-85f0-dc9bf554cc6b> | 3.0625 | 587 | Truncated | Science & Tech. | 35.565981 |
A closeup view of a typical pair of sunspots, with Earth superimposed to show scale.
Click on image for full size
Original Windows to the Universe artwork by Randy Russell using images from the Royal Swedish Academy of Sciences (sunspot image) and NASA (Earth image).
Sizes of Sunspots
Sunspots are very large
structures... | <urn:uuid:00eb7a3e-da71-407a-b2bd-e12d99ae9a72> | 4 | 627 | Knowledge Article | Science & Tech. | 59.339584 |
Published: 3:38 PM GMT on November 03, 2011
Last month, a team of scientists from Berkeley called the Berkeley Earth Surface Temperature (BEST) group released results from research they did on the Earth surface temperature record. Though there have been numerous studies and time series created on surface temperature, t... | <urn:uuid:18819ac7-393c-41a3-b334-c653f6417c0f> | 3.203125 | 1,136 | Nonfiction Writing | Science & Tech. | 39.017257 |
The movies have brainwashed us into thinking that robots should look like people, but the revolution isn’t turning out that way. How are the machines changing, and how will they change us? DISCOVER, with the National Science Foundation and Carnegie Mellon University, posed these questions to four experts in a panel dis... | <urn:uuid:9c2b7d1e-2c8d-4628-afce-13fa7bbcb99f> | 3.28125 | 1,446 | Audio Transcript | Science & Tech. | 58.080756 |
ANSI Common Lisp 15 Arrays 15.2 Dictionary of Arrays
The type of a vector that is not displaced to another
array, has no fill pointer, is not
and is able to hold
elements of any type is a subtype of type simple-vector.
The type simple-vector is a subtype of type vector,
and is a subtype of type (vector t).
- Compound T... | <urn:uuid:a392e492-bf92-4956-8ba2-7979abb66cff> | 2.796875 | 166 | Documentation | Software Dev. | 47.699359 |
ANSI Common Lisp 2 Syntax 2.4 Standard Macro Characters
A semicolon introduces characters that are to be ignored,
such as comments. The semicolon and all characters up to
and including the next newline or end of file are ignored.
220.127.116.11 Examples of Semicolon
18.104.22.168 Notes about Style for Semicolon | <urn:uuid:6f4b9efd-15f5-4e04-8749-698549ddd3dd> | 2.984375 | 82 | Documentation | Software Dev. | 67.576587 |
Seattle Weekly: News: The Super Flood by Frank Parchman:
Some 5,600 years ago, the body of water we call Puget Sound had an arm that extended 30 miles inland from present-day Elliott Bay in Seattle to a point halfway between Auburn and Sumner. Today, of course, that is the Green River Valley—the narrow, flat suburban l... | <urn:uuid:829367ee-d65f-4e3a-a9b0-5512c921ae13> | 3.203125 | 220 | Personal Blog | Science & Tech. | 57.117861 |
scanf, fscanf, sscanf, vscanf, vsscanf, vfscanf - input format conversion
scanf(const char *format, ...);
fscanf(FILE *stream, const char *format, ...);
sscanf(const char *str, const char *format, ...);
vscanf(const char *format, va_list ap);
vsscanf(const char *str, const char *format, va_list ap);
vfscanf(FILE *strea... | <urn:uuid:3b81d4d8-68ad-4ad5-891e-89fab9a0c7eb> | 3.46875 | 1,746 | Documentation | Software Dev. | 56.066355 |
Sun & Volcanoes Control Climate
It is accepted that volcanic eruptions can have a major impact on short term climate. A new study in Nature Geoscience uses instrument records, proxy data and climate modeling to show that multidecadal variability is a dominant feature of North Atlantic sea-surface temperature (SST), whi... | <urn:uuid:80c292f5-5699-44de-a8c1-37efe505a46d> | 3.375 | 1,723 | Knowledge Article | Science & Tech. | 25.54393 |
The precision, down to a tenth of a meter, calculated by the University of Grenada in their press release below is simply stunning. I wonder what the error bars are on 2.7 meters over seven years of the study? And, how does one filter out seasonal weather effects over such a short time span? Inquiring minds want to kno... | <urn:uuid:c8115a67-bc1f-4cd3-9111-3d424f902983> | 3.984375 | 984 | Personal Blog | Science & Tech. | 31.588727 |
kaufDA, a team in Germany, has started an initiative called “Make it green” whose goal is to reduce carbon emissions worldwide. One aspect of the program is to offset the carbon footprint resulting from the use of the Internet by both raising public awareness about protecting the environment and by planting more trees.... | <urn:uuid:b0ed90db-9b7a-4f9b-83ff-d73a693b373a> | 3.28125 | 414 | Personal Blog | Science & Tech. | 39.793252 |
Astronomy Day is a grass roots movement to share the joy of astronomy with the general population - "Bringing Astronomy to the People." On Astronomy Day, thousands of people who have never looked through a telescope will have an opportunity to see first hand what has so many amateur and professional astronomers all exc... | <urn:uuid:ac23a443-da23-4e58-8827-f78cc8bd77ca> | 3.484375 | 734 | Knowledge Article | Science & Tech. | 37.632378 |
Large spiral galaxy NGC 4945 is seen
near the center of this
In fact, NGC 4945 is almost the size of our own
Milky Way Galaxy.
Its own dusty disk, young blue star clusters, and pink star forming
regions standout in the sharp, colorful telescopic image.
About 13 million light-years distant toward the
NGC 4945 is only ab... | <urn:uuid:b474e7d4-d209-4f91-b984-e4044c1cd38d> | 2.90625 | 200 | Knowledge Article | Science & Tech. | 55.081825 |
Did Ancient Humans Have Knowledge of the Electromagnetic (EM) Spectrum?
By Glenn Kreisberg, Radio Frequency (RF) Spectrum Engineer
It’s been suggested, at various times, that ancient humans had knowledge and use of unseen powers, forces and energy fields. Could these unseen forces and fields consist of electromagnetic ... | <urn:uuid:3f01d6fb-b344-41d4-88d7-b047c182546a> | 3.28125 | 1,009 | Personal Blog | Science & Tech. | 25.585879 |
THE Hubble Space Telescope may soon be able to see other Earths - or at least those on their last legs - by detecting their evaporating oceans.
Almost all the extrasolar planets we know about are Jupiter-sized gas giants, Earth-sized ones being too small for existing methods to detect. But Michael Jura of the Universit... | <urn:uuid:493eaad7-18a4-463e-8d9c-043376272111> | 3.734375 | 192 | Truncated | Science & Tech. | 47.834709 |
The Liquids Reflectometer enables scientists to look within and between layers of film and determine how they are structured.
Svetlana Sukhishvili is a professor of chemistry and co-director of the Nanotechnology Graduate Program at Stevens Institute of Technology in Hoboken, New Jersey. As part of the Spallation Neutr... | <urn:uuid:1c4fd98f-7073-4ee6-976c-ace731296310> | 3.0625 | 713 | Knowledge Article | Science & Tech. | 27.210877 |
Science Agenda: To the Moons, NASA; July 2012; Scientific American Magazine; by The Editors; 1 Page(s)
Last year, after a lengthy, circuitous journey through the solar system, a NASA probe known as MESSENGER entered into orbit around Mercury. No spacecraft had visited the innermost planet in more than three decades, an... | <urn:uuid:e6f7da40-1341-4bbe-8246-7658abc26ec1> | 3.484375 | 219 | Truncated | Science & Tech. | 42.223182 |
Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.
2003 February 20
Explanation: A cold wind blows from the central star of the Boomerang Nebula. Seen here in a detailed false-color image recorded in... | <urn:uuid:58b7b78b-e3b5-402d-b111-fe0f7b96a23e> | 3.75 | 256 | Knowledge Article | Science & Tech. | 45.208454 |
Tuckett, R. P. (2008) CF3SF5 : a ‘super’ greenhouse gas. Education in Chemistry, 45. pp. 17-21. ISSN 0013-1350
URL of Published Version: http://www.rsc.org/Education/EiC/issues/2008Jan/CF3SF5SuperGreenhouseGas.asp
One molecule of the anthropogenic pollutant trifluoromethyl sulphur pentafluoride (CF\(_3\)SF\(_5\)), an a... | <urn:uuid:8de6526e-491e-4801-b4be-2cd01a7f7231> | 3.203125 | 412 | Academic Writing | Science & Tech. | 53.485931 |
Global Warming Effects Being Felt Around the World
North America is already feeling the affects of warmer temperatures in a variety of ways.
In New England, maple syrup production is declining because of warmer than usual winters. Farmers who used to begin tapping their trees in the beginning of March now must begin ta... | <urn:uuid:4a50f9ee-378a-498c-8724-7a1679f2ed8c> | 3.703125 | 518 | Personal Blog | Science & Tech. | 46.166128 |
SPARQL is an RDF query language, that is, a query language for databases, able to retrieve and manipulate data stored in Resource Description Framework format. It was made a standard by the RDF Data Access Working Group of the World Wide Web Consortium, and is considered as one of the key technologies of the semantic w... | <urn:uuid:545597b4-14d1-4bc5-9d3b-d00f49afe18a> | 2.953125 | 202 | Knowledge Article | Software Dev. | 43.808754 |
Light Dimmers and Resonance
Name: Edward M.
We have several incandescent bulbs that are controlled by
dimmers. If the dimmers are slowly moved, there are several positions
where the bulb makes a noise. I assume these noises represent some sort
of resonant frequency, but what is vibrating? and what property of the
chang... | <urn:uuid:6fe3812c-ef5f-484e-8d31-3d76faa324c5> | 2.6875 | 343 | Q&A Forum | Science & Tech. | 54.503194 |
On July 16, 2009, Wal-Mart announced that it will develop a sustainable product rating system that can be used to evaluate the sustainability of the products they sell in their stores. As a reminder, Wal-Mart sells a lot of products to a lot of people. According to its website, Wal-Mart “serves customers and members mo... | <urn:uuid:12b8edbd-3e51-4382-a842-999243dd5295> | 3.21875 | 541 | Personal Blog | Science & Tech. | 35.082385 |
Gravity is the powerful force that glues our universe together. Gravity helped form our solar system, the planets, and the stars. It holds the planets in orbit around the Sun, and moons in orbit around the planets. The gravitational pull of the Sun and Moon creates the tides on Earth. Far beyond our solar system, the i... | <urn:uuid:d2fa3344-48a9-4ad5-a55e-4b557028cc14> | 4.3125 | 338 | Knowledge Article | Science & Tech. | 44.619973 |
By Charles Q. Choi, SPACE.com
The moon — linked in myth with goddesses of witchcraft and the hunt, with gods of magic and wisdom — is nearly as old as Earth itself, with enigmas of its own. As close as the moon is to Earth, we are still far from solving all its mysteries — from how the moon was born to whether life on ... | <urn:uuid:bb9631a2-2875-4bc3-9a14-0c62efc17d87> | 3.53125 | 1,026 | Truncated | Science & Tech. | 55.998484 |
|Why is the sky near
Antares and Rho Ophiuchi so colorful?
The colors result from a mixture of objects and processes.
Fine dust illuminated from the front by starlight produces blue
Gaseous clouds whose atoms are excited by ultraviolet starlight produce
reddish emission nebulae.
Backlit dust clouds block starlight and ... | <urn:uuid:9b710fc8-5471-42f7-a68b-d22cf1e194a8> | 3.640625 | 179 | Knowledge Article | Science & Tech. | 51.460938 |
The average global temperature for July 2012 was more than 1° Fahrenheit above the 20th-century average, making it the fourth warmest July since record keeping began in 1880. July 2012 also marks the 36th consecutive July and the 329th consecutive month with a global temperature above the 20th-century average. The last... | <urn:uuid:e63a06e0-dc37-4109-968c-ac0e4ccb98fd> | 3.546875 | 529 | Knowledge Article | Science & Tech. | 27.955653 |
The idea is to make sure the environment the sections are in before
adding the antibodies is as similar to the environment the antibodies
themselves are in as possible. This increases the avidity and affinity of
the antibodies for the antigens.
Think of it like a lock and key. If your hand is shaking you won't be
able ... | <urn:uuid:8e804302-f518-4a92-af20-4747ee292cd8> | 2.734375 | 149 | Knowledge Article | Science & Tech. | 47.77872 |
You say that "...the level of carbon-14 in a living cell's DNA is directly proportional to the level in the atmosphere at the time it was born, minus a tiny amount lost to radioactive decay" (17 June, p 50). Isn't this only applicable if the cell was made using carbon that had just been absorbed from the atmosphere?
If... | <urn:uuid:06ecd248-2db8-4362-bef9-a1da88e1a834> | 3.15625 | 188 | Truncated | Science & Tech. | 61.201993 |
French physicist, who was awarded the 1991 Nobel Prize for Physics
for his discoveries about the ordering of molecules in liquid crystals
Gennes investigated how extremely complex forms of matter behave during
the transition from order to disorder. He showed how electrically or
mechanically induced phase changes transf... | <urn:uuid:eb66ffad-0946-45b9-ba56-014493d480db> | 3.109375 | 216 | Knowledge Article | Science & Tech. | 22.443954 |
The Purplemath Forums
Bases: Octal (Base 8) and
An older computer base system is "octal", or base eight. The digits in octal math are 0, 1, 2, 3, 4, 5, 6, and 7. The value "eight" is written as "1 eight and 0 ones", or 108.
I will do the usual repeated division, this time dividing by 8 at each step:
Then the correspond... | <urn:uuid:bec9c197-df51-40e5-a7b3-4df05ed8b8f6> | 4.125 | 1,327 | Tutorial | Science & Tech. | 67.502747 |
Faults and Earthquakes in San Diego County
Like the rest of southern California, San Diego County has a number of active earthquake faults. These faults generally run in a northwest-southeast direction and are the product of crustal stresses associated with movement of the Pacific and North American lithospheric plates... | <urn:uuid:6314efda-cd7c-4f3a-b95d-cc05a0c4f43c> | 3.484375 | 1,424 | Knowledge Article | Science & Tech. | 50.861268 |
Water Basics, Challenge 1:
How Fair Are the Water Properties?
Your teacher will divide you into teams comprising four to six students to answer questions about the special properties of water and its ability to sustain life on Earth. Use the resources listed under "Multiple Perspectives" to help you find the answers. W... | <urn:uuid:ac9403f6-e5d9-4b4a-a32c-f6b833bb1f3a> | 4.9375 | 373 | Tutorial | Science & Tech. | 40.769903 |
Previous abstract Next abstract
Einstein's theory of general relativity is widely accepted as the correct description of relativistic gravity. Consequences of the theory like black holes are routinely used to account for the properties of astrophysical phenomena such as quasars and AGNs. Many high-precision tests of ge... | <urn:uuid:f3c98260-a123-4bf6-8726-7579639aee41> | 3.3125 | 300 | Academic Writing | Science & Tech. | 25.518657 |
Chemical Concepts Demonstrated
- Relative activity of metals
- Metal classification based on reactivity
- Drop samples of sodium, magnesium, aluminum, and iron metal into water.
- Drop samples of magnesium, aluminum, and iron metal into 6M HCl.
|sodium ||Highly reactive in water. || |
Highly reactive in acid.
|magnesiu... | <urn:uuid:cfd123c8-29a7-4373-acbd-5dab36c6fb9e> | 3.8125 | 291 | Knowledge Article | Science & Tech. | 29.482594 |
Invasive snakes threaten biodiversity in Florida
The invasive Burmese python has been linked to mammal declines Florida’s Everglades National park. Researchers fear that some of the endangered species of the region may be in danger.
The Burmese python is a constrictor from Southeast Asia that has found its way from pet... | <urn:uuid:df6239bf-eaca-4877-8e66-0d29511f5d9a> | 3.328125 | 669 | Academic Writing | Science & Tech. | 44.116246 |
What do bees make honey from (pollen or nectre)? What do
they use the other for?
I have heard there are bees that make honey from decaying flesh. Is this
Sorry for the delayed reply, I hope this is still useful. Bees use nectar to
make honey, and gather pollen for brood production - it has more protein.
They feed devel... | <urn:uuid:a8176526-3e86-44ef-8934-19cad344196d> | 3.296875 | 130 | Q&A Forum | Science & Tech. | 65.435 |
Find out why water is one of the most amazing compounds in the
universe and why it is essential for life. - UNDER DEVELOPMENT
Get some practice using big and small numbers in chemistry.
Many physical constants are only known to a certain accuracy. Explore the numerical error bounds in the mass of water and its constitu... | <urn:uuid:72cb7780-8e46-4146-a347-09ab252b7d3d> | 3.875 | 394 | Content Listing | Science & Tech. | 44.086427 |
Seawater Chemistry from the North Pole Environmental Observatory, 2000-2005
This data set includes diverse measurements of seawater chemistry along with supplementary conductivity, temperature, depth (CTD); pressure; salinity; potential temperature; and density data from the Arctic Ocean near the North Pole. Measuremen... | <urn:uuid:3a465c48-2dc5-4204-b374-8bb0e44380aa> | 2.75 | 340 | Knowledge Article | Science & Tech. | 21.60119 |
Ozone Hole Meteorology: 2011 Temperature
The depth and area of the Antarctic ozone hole are governed by the temperature of the stratosphere and the amount of sunlight reaching the south polar region. Temperatures that are cold enough can form polar stratospheric clouds (PSCs). PSCs are an important component in the des... | <urn:uuid:50a43935-9fa9-48f2-a7a6-b959d0ac0b96> | 3.90625 | 181 | Knowledge Article | Science & Tech. | 33.56413 |
Astronomical seeing is the blurring and twinkling of celestial objects, such as stars and planets, caused by turbulence in the Earth's atmosphere.
The worse the seeing conditions, the poorer the quality of the image being observed by a telescope. It's a bit like looking into a clear sea on a windy day. The more disturb... | <urn:uuid:b9293ba0-addd-416f-ad7f-2b35c975d0a3> | 3.5625 | 237 | Knowledge Article | Science & Tech. | 49.06 |
A close-up of the world’s smallest orchid, at just over 2mm from petal tip to petal tip.
Image: Lou Jost.
The world’s smallest orchid was discovered recently in a mountainous nature reserve in Ecuador by American botanist Lou Jost. Dr. Jost, a former physicist, now works as a mathematical ecologist, plant biogeographer... | <urn:uuid:78655857-d63a-4334-882f-2400b78d213c> | 3.546875 | 1,038 | Personal Blog | Science & Tech. | 53.317488 |
The acid/base titration with NaOH and acetic acid is the oldest experiment in the book. I did it when I was in college (a long time ago) and both schools for which I work do the lab. I know they repeat it in higher level classes with a few more steps to make it more challenging. So it is to your advantage to try to mas... | <urn:uuid:a75760a4-929b-4ac2-a2a5-5086a77a14a4> | 3.703125 | 786 | Tutorial | Science & Tech. | 70.613104 |
(96) ... By the electromagnetic experiments of MM. Weber and Kohlrausch [ref], v=310,740,000 metres per second is the number of electrostatic units in one electromagnetic unit of electricity, and this, according to our result, should be equal to the velocity of light in air or vacuum. The velocity of light in air ... a... | <urn:uuid:8aa4c827-231e-4fd2-8790-0442c2209fcc> | 3.1875 | 326 | Knowledge Article | Science & Tech. | 49.825255 |
Trawling 'ploughs' the deep sea floor
Habitat damage Bottom trawling by fishermen may be even more damaging than previously thought, affecting the seabed as seriously as intensive ploughing of farmland erodes the soil, say Spanish scientists.
Bottom trawling - dragging nets across the sea floor to scoop up fish - stirs... | <urn:uuid:7272384d-d7be-4738-8ed2-1dd5701798e2> | 3.734375 | 606 | Truncated | Science & Tech. | 24.601428 |
Science subject and location tags
Articles, documents and multimedia from ABC Science
Friday, 15 March 2013
Mass strandings of pilot whales do not result from extended family members rushing to the aid of kin, new research suggests.
Monday, 19 November 2012
The largest animal on Earth is changing its ecology, say resea... | <urn:uuid:9833cd58-f980-4e74-93db-8131a17d20e8> | 2.890625 | 520 | Content Listing | Science & Tech. | 34.015984 |
Science Fair Project Encyclopedia
By definition, interplanetary travel is travel between bodies in a given star system.
Current achievements in interplanetary travel
NASA's Apollo program landed twelve people on the Moon and returned them to Earth: Apollo 11-17, except 13, i.e. six missions, with each time three astron... | <urn:uuid:3d6bc8a4-0ded-48fb-9aa5-cf1cf464ef95> | 3.71875 | 1,543 | Knowledge Article | Science & Tech. | 34.699019 |
Gypsum, a common mineral composed of calcium sulfate, lies scattered in this newly-released image of the Olympia Undae region of Mars. The picture was made by combining CRISM data with HiRISE observations, and has the same resolution characteristics of the Nili Fossae image. Made on October 1, 2006, the image covers ab... | <urn:uuid:9d48d62b-32f4-4800-8e90-7258ffc2c2cc> | 3.421875 | 183 | Knowledge Article | Science & Tech. | 47.968052 |
Abell 3376: A cluster of galaxies about 614 million light years from Earth.
Caption: This composite image of the galaxy cluster Abell 3376 combines Chandra and ROSAT X-ray data (gold), an optical image from the Digitized Sky Survey (red, green and blue), and a radio image from the VLA (blue). Two different teams used C... | <urn:uuid:860cf87f-c610-47ca-bed5-f3d59a3fbbad> | 3.484375 | 169 | Truncated | Science & Tech. | 38.336372 |
Welcome to the official Cryptography site for Duke CompSci 182 Group 5 Section 1.
A Typical Conversation on Cryptography
Me: Hey, you like feeling secure with your computer, right?
Friend:...riiiiiiiiiight? (having no idea where I'm going with this)
Me: Would you feel like switching over to a new mail client and chat c... | <urn:uuid:52e4b63f-8099-4fca-92c9-7056001ad11c> | 3.46875 | 976 | Knowledge Article | Science & Tech. | 45.664439 |
Interfaces are used to define a contract for the classes. It has its own importance when it comes to defining standards.
Consider the following example:
Cars have some standard and their basic operations are the same. Each car should have operations like startCar, moveCar, stopCar etc. Toyota, Mazda and Honda are cars ... | <urn:uuid:1513f15e-ecaf-4d00-bac6-5e501c921a43> | 3.140625 | 102 | Tutorial | Software Dev. | 49.386154 |
An Introduction to Unix Permissions -- Part Two
Pages: 1, 2
Remember from last week that what a user can do with a file depends on both the file's permissions and the directory's permissions. Let's make a test directory in our home directory to store some test files:
cd mkdir testdir cd testdir touch testfile ls -latot... | <urn:uuid:7d23c2b6-7211-4d62-adaf-f4855fee4454> | 2.78125 | 1,850 | Tutorial | Software Dev. | 62.17305 |
New research shows Earth's clouds are getting little lower, about one percent on average.
According to scientists this indicates that something quite important might be going on.
The results have potential implications for future global climate.
Scientists at the University of Auckland in New Zealand analyzed the first... | <urn:uuid:13c9e012-c8ea-470b-aa58-44264bb33221> | 3.921875 | 907 | Content Listing | Science & Tech. | 44.708052 |
While news headlines this past week highlighted flood and devastation on the Mississippi in the US, Europe has been agonising about the long-term drought in the Mediterranean (see Focus, this issue). Both catastrophes have their own timescales, and both inflict devastating human misery.
In an effort to tame great river... | <urn:uuid:03691c98-ec82-4e86-a923-716809590c5d> | 3.5 | 218 | Truncated | Science & Tech. | 50.145086 |
HOPPING may be the best way for robotic probes to explore the surface of comets and asteroids. Japanese engineers have built a cylindrical prototype that they say could take 9-metre hops in a low-gravity environment. They propose adding a more advanced version of the probe to MUSES-C, a Japanese mission to return an as... | <urn:uuid:68bf1308-7d0e-4943-8007-a1b86d9cb9d8> | 3.921875 | 215 | Truncated | Science & Tech. | 47.351818 |
Flame colours - a demonstration
This demonstration experiment can be used to show the flame colours given by alkali metal, alkaline earth metal, and other metal, salts. This is a spectacular version of the ‘flame tests’ experiment that can be used with chemists and non-chemists alike.
This experiment must be done as a ... | <urn:uuid:1ff95956-c134-4408-9adb-3deb25aaa8e7> | 3.609375 | 1,227 | Tutorial | Science & Tech. | 43.598552 |
In order to justify text in the way a word processor would, one must set 'linebreak' to 'false' and 'parbreak' to 'true'. For every new line, you must use "\n\n" (two newlines, NOT carriage returns as stated in the docs). If you wish to make two new lines in your finished document, "\n\n\n\n" will not work. Instead, yo... | <urn:uuid:aa7ebcf3-9ace-4beb-83cc-684a32b27882> | 3.09375 | 1,277 | Documentation | Software Dev. | 59.16966 |
About earthquakes in the Easter Tennessee Seismic Zone:
The Eastern Tennessee seismic zone extends across Tennessee and northwestern Georgia into northeastern Alabama. It is one of the most active earthquake areas in the Southeast. Although the zone is not known to have had a large earthquake, a few earthquakes in the ... | <urn:uuid:95f0a0d5-501f-499f-af9e-411b8201cc74> | 3.359375 | 273 | Knowledge Article | Science & Tech. | 63.770959 |
History of Gypsy Moths in the U.S. Along with other species, the Gypsy Moth was imported into the United States in the mid-nineteenth century with the intent of finding a species of silk producing moth that could be hybridized to compete favorably with the Silkworm Moth, yet not be subject to the many diseases that the... | <urn:uuid:204820e2-a3b4-47f0-94c7-61d2e63bf36c> | 3.515625 | 891 | Knowledge Article | Science & Tech. | 49.851133 |
Tails of Wonder!
Help the Stardust spacecraft capture comet dust and bring it back to Earth!
Test your comet IQ and help Stardust capture samples from Comet Wild 2. Each time you answer a question correctly, Stardust will move a little closer to the comet. If you get 8 out of 10 correct, Stardust will capture samples o... | <urn:uuid:b0f6f1d6-1e05-49c4-8f75-d1c376a89a28> | 3.953125 | 692 | Knowledge Article | Science & Tech. | 64.148181 |
Relativistic Doppler effect
The classical Doppler effect can be observed with any type of waves. When the source of the waves if
moving towards the observer it causes the waves to bunch up, resulting in an apparently higher frequency.
Similarly, if the source is
receding from the observer, the waves are spread out and ... | <urn:uuid:5253c872-4bb1-40e9-b6d5-6c9ba4ae1c8c> | 3.90625 | 329 | Knowledge Article | Science & Tech. | 39.6704 |
in regards to geometry
A cube has how many corners
Answer: 8 Corners
Try to picture a cube sitting in front of you and count the points on top, 4. The same is true for the side laying flat on the table. A total of 8 corners.
A cube has 8 vertices (corners, points), 12 edges (line segments), and 6 faces (planes). One fo... | <urn:uuid:bf6dbb58-b103-486b-8643-9db99f030f03> | 3.65625 | 163 | Q&A Forum | Science & Tech. | 76.863411 |
Chandra Finds Abundance of Ultraluminous X-ray Sources
This Chandra X-ray image shows the central regions of two colliding galaxies known collectively as "The Antennae." The latest Chandra data reveal a large population of extremely bright X-ray sources in this area of intense star formation. These "ultraluminous" X-ra... | <urn:uuid:9f9c7a17-4122-4648-9c7f-d29a918e62b7> | 3.734375 | 233 | Knowledge Article | Science & Tech. | 35.975 |
Published in Agronomy Journal, Volume 75, July 1, 1983, pages 654-656.
Publisher website: http://www.agronomy.org
NOTE: At the time of publication, the author David J. Wehner was affiliated with the University of Illinois at Urbana-Champaign. Currently, April 2008, he is the Dean of the College of Agriculture, Food and... | <urn:uuid:7b0377d0-6977-49a4-8acc-eff38805f4ba> | 2.6875 | 569 | Academic Writing | Science & Tech. | 30.463284 |
The Urban Barcode Project is a science competition in New York City. A DNA barcode is a DNA sequence that uniquely identifies each species of living thing. In the Urban Barcode Project, student research teams use DNA barcoding to explore biodiversity in New York City. TeaBOL is a DNA barcoding project undertaken by stu... | <urn:uuid:7bdbf72e-57d3-4fae-b167-67568c9436cd> | 2.734375 | 93 | Knowledge Article | Science & Tech. | 30.332941 |
Timothy syndrome mutations provide new insights into the structure of L-calcium channel
The human genome encodes 243 voltage-gated ion channels. Mutations in calcium channels can cause severe inherited diseases such as migraine, night blindness, autism spectrum disorders and Timothy syndrome, which leads to severe card... | <urn:uuid:526c7163-1bbc-4eea-b27e-c85bcc3bc741> | 3.03125 | 983 | Truncated | Science & Tech. | 21.412085 |
Hspec is a Behaviour-Driven Development tool for Haskell programmers. BDD is an approach to software development that combines Test-Driven Development, Domain Driven Design, and Acceptance Test-Driven Planning. Hspec helps you do the TDD part of that equation, focusing on the documentation and design aspects of TDD.
Hs... | <urn:uuid:eb9587f4-24ff-421e-a29d-dfacfa5ac58c> | 2.75 | 1,309 | Documentation | Software Dev. | 54.665155 |
|Portability||portable (H98 + FFI)|
This module provides pure functions for compressing and decompressing
streams of data represented by lazy
ByteStrings. This makes it easy to
use either in memory or with disk or network IO.
For example a simple gzip compression program is just:
import qualified Data.ByteString.Lazy a... | <urn:uuid:7f5cf599-f5b1-49d8-a3e9-ecf2e9b0e3b7> | 2.703125 | 411 | Documentation | Software Dev. | 52.537985 |
questions 1: the three vectors x, y, z have real-valued components and form the sides of a triangle. Prove the Law of Cosines for these vectors, i.e...that
|z|^2 = |x|^2 + |y|^2 - 2*x*y = |x|^2 + |y|^2 - 2*x*y*cos(theta)
where theta is the angle between vectors x and y. (can be using scalar product to solve)
question 2... | <urn:uuid:4ec8d8d2-b221-4171-980f-d71ff384d714> | 3.484375 | 200 | Q&A Forum | Science & Tech. | 102.039091 |
Many complex systems are composed of a large number of similar units that are connected in a complicated manner. An important example is provided by neural networks where nerve cells in the brain communicate by exchanging pulses via synaptic connections. Unlike atoms in a crystal which are arranged on a regular, e.g cu... | <urn:uuid:b1648b0d-8602-4a6c-8531-16638fd7c22f> | 2.78125 | 542 | Content Listing | Science & Tech. | 31.845056 |
Climate change tops the list of threats. As oceans absorb man-made carbon dioxide from the atmosphere, they become more acidic. This ocean acidification is accelerating at an alarming rate, harming marine ecosystems and species. Coral bleaching caused by increasing temperatures is affecting not only coral reefs, but th... | <urn:uuid:9c550a11-52db-4692-a02d-252aa8db21b6> | 3.6875 | 148 | Truncated | Science & Tech. | 34.971193 |
I don’t have much to say about the human side of the Haitian earthquake except that it’s terrible, as media reports will tell you. I saw the waves coming in on our seismograph drum, which gave some idea of the distance and size of the earthquake but not the location. The location in itself is about as bad as possible —... | <urn:uuid:373a0f9d-80b0-4998-a5a6-de747605fa17> | 2.953125 | 870 | Personal Blog | Science & Tech. | 44.39007 |
Effect of Bird's Eye chili(i.e. capsicum frutescen) on Gryllus assimilis (the common black cricket)
This science project was conducted to determine if Bird's Eye chili can be used as a form of deterrent against Gryllus assimilis (the common black cricket). The experiment was done by spraying various concentrations of B... | <urn:uuid:2e70beff-752c-42ef-b92f-fd0ec7b3db6b> | 2.828125 | 694 | Content Listing | Science & Tech. | 44.634337 |
On September 26,
a large solar
coronal mass ejection smacked into planet
producing a severe geomagnetic storm and wide spread auroras.
Captured here near
local midnight from Kvaløya island
outside Tromsø in northern Norway, the intense auroral glow
was framed by parting rain clouds.
Tinted orange, the clouds are also i... | <urn:uuid:b6892e4a-fe59-4b8c-8619-bc5c93e5f4ee> | 2.71875 | 159 | Knowledge Article | Science & Tech. | 31.257045 |
Free Online Dictionary
|Babylon English English dictionary||Download this dictionary|
n. (Physics) tau, tauon, negatively charged lepton having a mass almost 3500 times that of the electron (discovered by Martin Lewis Perl)
The following video provides you with the correct English pronunciation of the word "tau lepton"... | <urn:uuid:6b1dc544-2930-48b0-9b57-6a6cc89bf0d7> | 2.96875 | 431 | Structured Data | Science & Tech. | 37.809289 |
Simply begin typing or use the editing tools above to add to this article.
Once you are finished and click submit, your modifications will be sent to our editors for review.
characteristics and classification
Burrowing barnacles (order Acrothoracica, about 30 species) are small, unisexual forms that lack shells and hav... | <urn:uuid:1a17affc-83b4-4440-95d0-d13d5717beab> | 3.859375 | 230 | Knowledge Article | Science & Tech. | 36.694929 |
|Scientific Name:||Fregata magnificens|
|Species Authority:||Mathews, 1914|
|Red List Category & Criteria:||Least Concern ver 3.1|
|Reviewer/s:||Butchart, S. & Symes, A.|
This species has a very large range, and hence does not approach the thresholds for Vulnerable under the range size criterion (Extent of Occurrence <... | <urn:uuid:b10af90e-8370-41df-b1e3-c4f713f61c94> | 2.703125 | 820 | Knowledge Article | Science & Tech. | 34.148489 |
IT LOOKS like an ordinary USB memory stick, but a little gadget that can sequence DNA while plugged into your laptop could have far-reaching effects on medicine and genetic research.
The UK company Oxford Nanopore Technologies built the device, called MinION, and claims it can sequence simple genomes - such as those of... | <urn:uuid:b28d5bc9-f7f8-4e3a-a4c1-c1d0e967e2c8> | 3.4375 | 213 | Truncated | Science & Tech. | 40.004577 |
Mercury and Radioisotope Thermalelectric Generators
Country: United States
Date: Spring 2010
Why was mercury used in some radioisotope
thermalelectric generators (RTGs)?
After some extensive searching, I was unable to find a single
reference to the
use of mercury in a Radioisotope Thermoelectic Generator. Do you have
a... | <urn:uuid:a0323e69-2aba-4a75-850e-4d247389d087> | 3.28125 | 294 | Q&A Forum | Science & Tech. | 35.424883 |
THE MILKY WAY GALAXY
The study of the main components of our Galaxy (Disks, Halo, Bulge, Clusters) is of the uttermost importance to understand the formation and evolution of external galaxies. It is only in our Galaxy that the properties of the different components can be studied in great detail.
Observations of the c... | <urn:uuid:a8d92399-ead0-4e9a-a09a-c9d5f426b32b> | 3.234375 | 889 | Knowledge Article | Science & Tech. | 21.107803 |
It's often useful to keep any built files completely
separate from the source files.
In SCons, this is usually done by creating one or more separate
variant directory trees
that are used to hold the built objects files, libraries,
and executable programs, etc.
for a specific flavor, or variant, of build.
SCons provides... | <urn:uuid:21b2d146-6575-4851-ab7d-0417009160b8> | 3.515625 | 398 | Documentation | Software Dev. | 61.463882 |
Inside the Insectarium
By John C. Abbott
“Because of their diversity, natural beauty and sheer power, insects certainly constitute a force of nature.”
A jewel beetle (Chrysina woodi), from the Davis Mountains, is one of the few animals on the planet that can see circularly polarized light in the same way that we use gl... | <urn:uuid:1eb8fe47-57f1-4dce-9336-a8bccc679376> | 3.375 | 340 | Truncated | Science & Tech. | 42.660188 |
Luminescense Still Mystery to Science (Mar, 1932)
Luminescense Still Mystery to Science
by Calvin Frazer
ON DECEMBER 28, 1929, the British steamship Talma was off the eastern shores of the Bay of Bengal, en route from Calcutta to the Far East. The weather was calm and clear. Toward seven in the evening an extraordinary... | <urn:uuid:50c4a10d-d884-4e20-a921-6562162ec5db> | 3.46875 | 1,149 | Personal Blog | Science & Tech. | 46.503435 |
|Ivars Peterson's MathTrek|
April 15, 1996
Scissors-paper-rock is a game that children play, mathematicians analyze, and a certain species of lizard takes very seriously.
In the playground version of the game, each of two players holds a hand behind his back. On the count of three (or by chanting some ritual phrase), b... | <urn:uuid:08181ab7-baf2-45e6-a4f2-4218e3179027> | 3.171875 | 1,103 | Nonfiction Writing | Science & Tech. | 47.143974 |
Map Making with Differential Data
WMAP observes temperature differences between points separated by ~141° on the sky. Maps of the relative sky temperature are reconstructed from the difference data using a modified form of the algorithm adopted by COBE-DMR.
The algorithm WMAP uses to reconstruct sky maps from different... | <urn:uuid:de721bed-10ec-4afb-a60e-d4a37c21a4f6> | 3.09375 | 501 | Academic Writing | Science & Tech. | 41.547381 |
Pacific Coastal & Marine Science Center
Coastal and Marine Earthquake Studies
|The Cascadia Megathrust and Tectonic Stress in the Pacific Northwest
To understand the tectonic cause of stress and deformation in the Pacific Northwest, we need to consider not only forces acting along the Cascadia Subduction zone, but also... | <urn:uuid:e12f9288-e19d-4e89-8f52-92d9b8c066ef> | 3.5 | 317 | Knowledge Article | Science & Tech. | 33.032527 |
COLUMBIA, Mo. University of Missouri scientist Ray Semlitsch studies creatures most people dont ever see. These creatures are active only at night and thrive in the shallow, cool, wet surroundings of headwater streams, an oft-overlooked biological environment.
A collaborative study, with MU graduate student Bill Peterm... | <urn:uuid:76a970bc-2eed-4f58-8ca9-6fcdbb7e251c> | 3.671875 | 420 | Truncated | Science & Tech. | 28.51391 |
Since the birth of the Homo Habilis we have been creating new things by “chopping out” pieces to create components to be stuck together in the building phase. Nature does not work like that. It builds up molecule after molecules and that provides ways to create most efficient structures.
This is now within our technica... | <urn:uuid:d64de630-fd4e-4c66-8277-be07e2f0447e> | 3.296875 | 261 | Personal Blog | Science & Tech. | 34.255 |
Mono: A branch to other platforms
Mono is a open-source, multi-platform CLR (Common Language Runtime) allows .NET Applications
(particularly C# written applications) to run on Linux and Mac OS X. Mono was created as a deal from
Microsoft to uses the CLR to create what is now Mono. What many people don't know, the CLR o... | <urn:uuid:d352baf3-f906-405d-82fc-8978ac877465> | 2.71875 | 544 | Comment Section | Software Dev. | 73.900565 |
Regular readers of Nanodot will be aware that the nanotech uses of the exquisite molecular recognition properties of DNA include both the programmed assembly of nanoparticles (which is not atomically precise) and structural DNA nanotechnology (the atomically precise assembly of nanometer scale structures from DNA stran... | <urn:uuid:ca8b01f6-a71f-4998-8a22-25ce043fcb43> | 3.5 | 1,006 | Knowledge Article | Science & Tech. | 26.920765 |