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Query: classification: "42.83"
|Title||Temporal and spatial patterns of laying in the Moluccan megapode Eulipoa wallacei (G.R. Gray)|
|Keywords||Moluccan megapode; Eulipoa wallacei; egg production; lunar synchrony|
|Abstract||The Moluccan megapode Eulipoa wallacei (G.R. Gray, 1860) lays its eggs at night in the sand at... | <urn:uuid:98b4fecc-fb15-4189-8e5b-661392044a09> | 2.734375 | 228 | Structured Data | Science & Tech. | 37.591538 |
During the Star Wars years of the 1980s, Tom Paterson worked at a defense think tank creating elaborate mathematical models to help military commanders quickly decide which weapons to deploy to counter incoming missiles. Inputs from hundreds of sensors had to be combined to generate a consummate picture of events that ... | <urn:uuid:8c5268a3-fb7e-4809-b768-86b4ebe3e60c> | 2.984375 | 180 | Truncated | Science & Tech. | 25.887308 |
These is a drawing of the interior of Io.
Click on image for full size
Interior of Io
The diagram to the left shows the interior of Io.
When the Galileo spacecraft flew by Io it took measurements which showed that Io was separated into two layers, as shown in this picture.
Thus scientists think that Io has a large core... | <urn:uuid:889341f1-6688-4305-a1ca-a53e92e4feaa> | 3.8125 | 466 | Content Listing | Science & Tech. | 64.861136 |
In a typical year, it is not uncommon for a dozen or so comets to come within range of amateur telescopes. During the month of October, 2010, a small comet will pass unusually close to Earth. On Oct. 20, Comet Hartley 2 will pass just over 11 million miles (18 million km) from Earth. That is close enough for the comet ... | <urn:uuid:bae30682-110c-416b-bf84-eaae0f65eb55> | 4.28125 | 978 | Knowledge Article | Science & Tech. | 54.011878 |
Posted Aug 24, 2003 by Joe Otten
The thing that has always puzzled me about black holes is what happens to the entropy of objects that fall into them?
By its description, a single infinitely dense point seems to have a very low entropy. But if we then let a high entropy object fall into a black hole, we appear to have ... | <urn:uuid:9616e3bc-10ce-4eb0-8304-f62106edf360> | 2.75 | 505 | Comment Section | Science & Tech. | 56.145625 |
As soon as they lay their eggs, the female cichlids scoop them up into their mouths and incubate them until they hatch.
R. Buckminster Fuller was a twentieth century scientist, philosopher, inventor, and was also named a great architect.
Frogs also aren’t fussy eaters: any live prey will do. Some large species of frogs... | <urn:uuid:fb056eb6-e471-4532-8e19-5716b878c886> | 2.6875 | 127 | Knowledge Article | Science & Tech. | 64.371667 |
About this Base Converter
Base-2 to base-62 are accepted. "A" stands for 10, "Z" for 35, "a" (lower-case) for 36 and "z" (lower-case) for 61. Decimals are supported. This is a custom function because PHP's base_convert() doesn't accept decimals and only goes up to base-36. It's only as precise as PHP is, so don't blind... | <urn:uuid:ce241d9c-a5e7-42c3-95fb-ca084d804bf4> | 3.3125 | 547 | Q&A Forum | Software Dev. | 86.924719 |
The ICM and the IGM show metal lines in the X-ray spectra. These metals cannot have been produced in the gas, but they must have been produced in the galaxies and subsequently transported from the galaxies into the ICM/IGM by certain processes like e.g. ram-pressure stripping, galactic winds, galaxy-galaxy interaction ... | <urn:uuid:b0a9cfe3-eed9-450e-b1d8-fa1847ed42a6> | 3.109375 | 1,246 | Academic Writing | Science & Tech. | 47.962867 |
One of the biggest questions in science has always been how the universe formed. Over the last century, we've made a lot of progress about understanding the way it has developed: The Big Bang Model. With the most sophisticated telescopes ever built, scientists have now made measurements confirming the accuracy of this ... | <urn:uuid:00b71dff-bd72-4193-b5dd-967dea413b6c> | 3.359375 | 198 | Personal Blog | Science & Tech. | 46.765129 |
A theoretical analysis of recent experiments suggests that a key feature of a topological quantum computer—the unusual statistics of quasiparticles in the quantum Hall effect—may finally have been observed.
By exploiting the concept of particle-hole duality, one can realize a point junction between integer and fraction... | <urn:uuid:a7f014e1-dfcd-46b7-926a-0554c521be0c> | 3 | 528 | Content Listing | Science & Tech. | 26.498604 |
Cascading Importance: Wolves, Yellowstone, and the World Beyond. A talk with William Ripple. Jonathan Batchelor Winter 2013.
Large Predators and Ecological Health WAMC Northeast Public Radio August 23.
Top Predators Protect Forests The Wildlife Professional Summer 2012.
Cougars Encourage Lizards in Zion Year of the Liz... | <urn:uuid:8d55d791-f938-4846-9347-17c697c329a0> | 3.390625 | 1,508 | Content Listing | Science & Tech. | 56.17466 |
This Dawn FC (framing camera) image shows some of the undulating terrain in Vesta’s southern hemisphere. This undulating terrain consists of linear, curving hills and depressions, which are most distinct in the right of the image. Many narrow, linear grooves run in various directions across this undulating terrain. The... | <urn:uuid:070933fb-a8a3-406a-8b89-95e2d798f517> | 3.265625 | 459 | Knowledge Article | Science & Tech. | 44.139553 |
|Freshwater Mussels of the Upper Mississippi River System|
Mussel Conservation Activities
2005 Highlights: Possible fish predation of subadult Higgins eye was observed in the Upper Mississippi River, Pools 2 and 4.
Subadult Higgins eye pearlymussels (Lampsilis higginsii) from the Upper Mississippi River, Pools 2 and 4.... | <urn:uuid:931a73fa-5694-4b94-93fe-4dedcf039dcd> | 3.015625 | 227 | Knowledge Article | Science & Tech. | 30.7425 |
HELCOM Indicator Fact Sheets for 2005
As the environmental focal point of the Baltic Sea, HELCOM has been assessing the sources and inputs of nutrients and hazardous substances and their effects on ecosystems in the Baltic Sea for almost 30 years. The resulting indicators are based on scientific research carried out ar... | <urn:uuid:7c6ebf00-01dd-49e4-b7ae-1c894499c4ed> | 3.15625 | 1,838 | Structured Data | Science & Tech. | 32.555379 |
slot-missing class object slot-name operation &optional new-value => result*
slot-missing (class t) object slot-name operation &optional new-value
Arguments and Values:
class---the class of object.
slot-name---a symbol (the name of a would-be slot).
operation---one of the symbols setf, slot-boundp, slot-makunbound, or ... | <urn:uuid:b143a54e-cab0-40a5-9564-dd175c5caccb> | 3.015625 | 348 | Documentation | Software Dev. | 51.614314 |
AN ILLUSION device that makes one object look like another could one day be used to camouflage military planes or create "holes" in solid walls.
The idea builds on the optical properties of so-called metamaterials, which can bend light in almost any direction. In 2006, researchers used this idea to create an "invisibil... | <urn:uuid:1a023e00-0243-4afa-8be5-70df19c7bc36> | 3.4375 | 215 | Truncated | Science & Tech. | 47.467219 |
The Array object is used to store multiple values in a single variable.
Create an array, and assign values to it:
You will find more examples at the bottom of this page.
An array is a special variable, which can hold more than one value at a time.
If you have a list of items (a list of car names, for example), storing ... | <urn:uuid:ce9fe621-e329-44db-acf6-98f01c2ee7b3> | 4.28125 | 360 | Documentation | Software Dev. | 60.750141 |
|Life depends on an essentially continuous exchange of
mass and energy between living organisms and their environment.
Human impact on this vital exchange has occurred on a global or
macroclimate scale. Understanding the physical principles
involved in heat transfer and absorption in the atmosphere is critical
to under... | <urn:uuid:77831d47-ed83-47e1-aa8f-16bc431d8619> | 4 | 1,507 | Tutorial | Science & Tech. | 37.059793 |
Introduction to Enzymes
The following has been excerpted from a very popular Worthington publication which was originally published in 1972 as the Manual of Clinical Enzyme Measurements. While some of the presentation may seem somewhat dated, the basic concepts are still helpful for researchers who must use enzymes but... | <urn:uuid:cb68bdbc-cf40-4d1b-ba86-741aa42fc245> | 4.09375 | 234 | Tutorial | Science & Tech. | 32.380483 |
In Journey into the Cell, we looked at the structure of the two major types of cells: prokaryotic and eukaryotic cells. Now we turn our attention to the "power houses" of a eukaryotic cell, the mitochondria.
Mitochondria are the cell's power producers. They convert energy into forms that are usable by the cell. Located... | <urn:uuid:725b19ff-601b-4c5b-9e4d-2293b902f895> | 4.0625 | 351 | Knowledge Article | Science & Tech. | 31.740185 |
- About Us
- SW Climate
February 2012 La Niña Drought Tracker
February 08, 2012 / Vol. 2 / Issue 3 / Drought Tracker / A Publication by CLIMAS
After a wet December, more typical, dry La Niña conditions returned in January. Across Arizona and New Mexico precipitation generally was less than 50 percent of average, with l... | <urn:uuid:4d01727a-1f35-48cc-bf09-97d8ab052898> | 2.84375 | 1,202 | Knowledge Article | Science & Tech. | 30.820836 |
Date of this Version
Nebraska Public Power District (NPPD) has monitored water quality since 1989 and fish populations since 1993 on the Niobrara River in Nebraska in the vicinity of Spencer Hydro during "flushing" or "sluicing" activities. These sluicing activities alter water quality in the river downstream, which ca... | <urn:uuid:942a696e-3c5f-47bb-a446-1ed17907725a> | 3.421875 | 265 | Knowledge Article | Science & Tech. | 47.09828 |
A bag contains n discs, made up of red and blue colours. Two discs are removed from the bag.
If the probability of selecting two discs of the same colour is 1/2, what can you say about the number of discs in the bag?
Let there be r red discs, so P(RB) = r/n (nr)/(n1), similarly,
P(BR) = (nr)/n r/(n1).
Therefore, P(diff... | <urn:uuid:c329b7b4-cde7-4cf9-96f3-2a0ef6253d5c> | 2.9375 | 304 | Q&A Forum | Science & Tech. | 94.961703 |
June 22, 1976. North Atlantic. At 21:13 GMT a pale orange glow behind a bank of towering cumulus to the west was observed. Two minutes later a white disc was observed while the glow from behind the cloud persisted.
High probability that this may have been caused by interferometry using 3-dimensional artificial scalar w... | <urn:uuid:5ff0ec8a-893b-4fc8-b51a-53a907c3402b> | 2.921875 | 452 | Knowledge Article | Science & Tech. | 62.622889 |
Herschel Space Observatory
Launch Date: May 14, 2009
Mission Project Home Page - http://herschel.jpl.nasa.gov/
Herschel's infrared image of the Andromeda Galaxy shows rings of dust that trace gaseous reservoirs where new stars are forming and XMM-Newton's X-ray image shows stars approaching the ends of their lives. Bot... | <urn:uuid:1ce46b18-ab5f-48ab-aacd-8ef745e71dd4> | 3.671875 | 768 | Knowledge Article | Science & Tech. | 50.385784 |
Science Fair Project Encyclopedia
Knot theory is a branch of topology that was inspired by observations, as the name suggests, of knots. But progress in the field no longer depends on experiments with twine. Knot theory concerns itself with abstract properties of theoretical knots — the spatial arrangements that in pri... | <urn:uuid:5224c8e3-2023-4490-bcb0-4fefe395a832> | 4.03125 | 1,141 | Knowledge Article | Science & Tech. | 51.304251 |
colorful images are of thin slices of meteorites viewed through a
Part of the group classified as HED meteorites
for their mineral content (Howardite, Eucrite, Diogenite), they likely
to Earth from 4 Vesta,
the mainbelt asteroid currently being explored by NASA's
Why are they thought to be from Vesta?
Because the HED m... | <urn:uuid:ebe51457-c1d9-4dd2-ae15-e45a12f08e6c> | 3.359375 | 192 | Knowledge Article | Science & Tech. | 49.004658 |
The recognized authority for satellite observations of Amazon deforestation is the Brazilian Space Research Institute (Portuguese acronym, INPE). This organization has been monitoring Amazon deforestation since 1988. Currently, INPE publishes monthly reports (for example, see the August 2009 [PDF] report in Portuguese)... | <urn:uuid:285048c7-93aa-4420-917d-d409dcd86a84> | 3.5625 | 233 | Knowledge Article | Science & Tech. | 26.751402 |
ICMAKE Part 2
Icmake source files are written according to a well-defined syntax, closely resembling the syntax of the C programming language. This is no coincidence. Since the C programming language is so central in the Unix operating system, we assumed that many people using the Unix operating system are familiar wit... | <urn:uuid:031f7ec1-ba10-4fc6-af49-782fc65e4df5> | 3.109375 | 1,292 | Documentation | Software Dev. | 31.781229 |
When you have 400 earthquakes on top of one of the largest supervolcanoes on Earth, people pay attention.
And since the day after Christmas, that's what has happened at Yellowstone National Park. Scientists are seeing what they call a "swarm" of low intensity earthquakes -- the largest since the 1980s. The biggest quak... | <urn:uuid:47cbb496-cca8-47cb-8acd-5f6b47f47afd> | 2.9375 | 171 | Truncated | Science & Tech. | 61.486928 |
WHILE telling the world that they have stopped producing plutonium for nuclear weapons, Britain and the US are planning to carry on making tritium for H-bombs. The US government is proposing to bring a major new tritium production plant into operation by 2010, while British Nuclear Fuels (BNFL) is continuing to manufac... | <urn:uuid:adde4be9-d1c0-4354-94b3-87ebcd846c91> | 2.796875 | 225 | Truncated | Science & Tech. | 46.625558 |
Inside RelativeLayoutby James Elliott, coauthor of Java Swing, 2nd Edition
As promised in my first article, "RelativeLayout: A Constraint-Based Layout Manager," here's a look inside the
RelativeLayout package. This article explains how the layout manager works, and discusses how to extend it to support new kinds of con... | <urn:uuid:1b0ddc5f-b616-4f83-9c81-b11dbb31528f> | 2.890625 | 901 | Documentation | Software Dev. | 42.500558 |
Heat loss and hydrothermal ciruculation due to sea-floor spreading.
Abstract (Summary)Lithospheric cooling along the Galapagos Spreading Center at 86°W longitude, as determined by surface heat-flow measurements, appears dominated by hydrothermal circulation. This same phenomena apparently exists on the Mid-Atlantic Rid... | <urn:uuid:6b27fe4e-b678-4b8b-965f-6d6a0bdfc6c7> | 3.203125 | 793 | Academic Writing | Science & Tech. | 36.658399 |
Assignment operator in java
This tutorial will help you to understand assignment operator in java..
Conditional operator in java
Conditional operators return either true or false value based on the expression..
Java set example
In this tutorial we will see how to use the Java Set interface . We will create an example t... | <urn:uuid:616e711f-c1f6-4ca6-a0db-cef4720f6309> | 3.578125 | 1,670 | Content Listing | Software Dev. | 49.885241 |
1. Fifty years of manned spaceflight. April marked the 50th anniversary of the first manned spaceflight by Yuri Gagarin aboard Vostok 1 in 1961. Russia continued regular launches with its Soyuz becoming the only way too carry astronauts to the International Space Station (ISS) and making their first unmanned launches f... | <urn:uuid:fafccad4-c02d-483d-9fe6-c5e4a5a6007f> | 3.28125 | 534 | Listicle | Science & Tech. | 45.12835 |
There’s a third more carbon dioxide in the air than at the start of the Industrial Revolution. The carbon acts like insulation in the atmosphere, or like glass in a greenhouse — that’s why it’s called a greenhouse gas – and it is warming the air, which warms the seas.
The current carbon dioxide concentration is higher ... | <urn:uuid:701d3eb8-eec0-4799-91ca-06d038d4829d> | 3.609375 | 796 | Knowledge Article | Science & Tech. | 46.412199 |
Scientific name: Epione vespertaria
July - August. Aberdeenshire, Moray and Yorkshire. This small moth is either yellow or orange, with brown bordered wings. Found in open woodland or on grassland. Similar to the Bordered Beauty.
The female tends to be a lighter yellow than the male, it also has a deeper indentation in... | <urn:uuid:38288833-445f-4b79-ab0e-0862d266d631> | 3.078125 | 281 | Knowledge Article | Science & Tech. | 46.377029 |
The Midwestern region of the United States experienced its second coldest December in the 106 year record of observations. The December 2000 average temperature was 14.3°F, just missing the 1983 record of 13.9°F. A number of first-order stations broke their all-time cold records for December, including South Bend, IN; ... | <urn:uuid:7b95f622-3145-4801-a016-2adda5d7e638> | 3.421875 | 802 | Academic Writing | Science & Tech. | 39.362833 |
4. CHECKLIST FOR THE NEXT DECADE
As I have been careful to stress the basic tenets of Inflation
+ Cold Dark Matter have not yet been confirmed definitively.
However, a flood of high-quality cosmological data is
coming, and could make the case in the next decade.
Here is my version of how "maybe" becomes "yes."
- Map of... | <urn:uuid:606aa78d-6e2e-4f18-ba06-96b1eb161c6a> | 2.921875 | 827 | Academic Writing | Science & Tech. | 40.179762 |
light in space
1. According to the books, the speed of light in a vacuum
is 300,000 km per second. If you send out a sudden pulse
of light in space, does it have to accelerate to that speed?
2. If you could make a _very_ long tube in space, with
a mirror at both ends (perfect mirrors, and perhaps long
enough to reach f... | <urn:uuid:996dd21f-14ac-4602-86ae-847a661c620d> | 3.578125 | 356 | Knowledge Article | Science & Tech. | 65.286147 |
7 February 2006
Most cosmologists believe that the universe is dominated by “dark energy” — a mysterious form of energy that could explain why the universe is expanding and accelerating at the same time.
Now, however, theoretical physicists have studied a new model of gravity that can, they claim, account for the accel... | <urn:uuid:1b0008e7-bee1-4ade-8ba4-88118b31bf00> | 3.0625 | 110 | Truncated | Science & Tech. | 36.844769 |
Comet 32 Runtime
The RETURN statement transfers program control to the statement
immediately following the most recently invoked subroutine call.
All subroutine calls in Internet Basic place a "return address" in a subroutine stack. The RETURN statement simply transfers program control to the address on the top of this... | <urn:uuid:64fce9e0-e974-4384-ae61-a0fed57fe972> | 3.078125 | 215 | Documentation | Software Dev. | 39.27769 |
Phenology: Changes in Ecological Lifecycles
By Zack Guido | The University of Arizona | September 12, 2008
Lilac flowers bloom with cues from the weather. Caribou give birth at the peak of plant abundance so that their newborns have plenty to eat. In the Southwest, as well as all other parts of the world, variations in... | <urn:uuid:c4515ae2-0ac7-44ec-a9dc-42ec8a5adf76> | 3.609375 | 1,489 | Knowledge Article | Science & Tech. | 42.405384 |
Some animals, like earthworms, snails, and spiders, have nerves but not actual brains.
A one-year-old child's brain weighs about 2 pounds (950 g), ten times the weight of a dog's brain.
The primate cortex is so large that it has to be folded to fit inside the skull. That's why the surface of the brain is wrinkly.
The n... | <urn:uuid:3bd155a1-25f8-411c-9c34-1d130efec406> | 3.53125 | 219 | Knowledge Article | Science & Tech. | 69.394547 |
What's a Mangrove? And How Does It Work?
If you've ever spent time by the sea in a tropical place, you've probably noticed distinctive trees that rise from a tangle of roots wriggling out of the mud. These are mangroves—shrub and tree species that live along shores, rivers, and estuaries in the tropics and subtropics. ... | <urn:uuid:0f198350-c837-4dc6-bdfe-ac3b5bfad431> | 4.0625 | 1,472 | Knowledge Article | Science & Tech. | 51.604172 |
Web Programming is the process of creating Internet Applications. Any application that uses the Internet in a way, can be considered an Internet application. They can be classified into four common categories:-
Web Applications - Applications based on the Client/Server architecture over the Internet.
The Client/Server ... | <urn:uuid:0c01a907-82ff-48b2-a8d2-a12fdb03cb7f> | 3.703125 | 1,205 | Tutorial | Software Dev. | 33.535153 |
Two long straight wires cross each other at right angles, and
the horizontal wire carries 2 I (capital i ) Amp and vertical wire
carries one I Amp. Assume ABC and D are equal distance L from both
vertical and horizontal wires. Calculate B field in term of I and L
and other fundamental constants at each of the points AB... | <urn:uuid:dbf258ab-85bc-4fb4-af12-9ab01bb08037> | 3.125 | 220 | Q&A Forum | Science & Tech. | 65.655599 |
Definitions for ultra-gaseous matter
The Standard Electrical Dictionary
Gas so rarefied that its molecules do not collide or very rarely do so. Experiments of very striking nature have been devised by Crookes and others to illustrate the peculiar phenomena that this matter presents. The general lines of this work are s... | <urn:uuid:6b1b6976-2352-4b69-8132-9755a8ffd135> | 3.0625 | 414 | Structured Data | Science & Tech. | 41.175427 |
Jump to main content or Bold Kids site navigation
The OSV Bold supports a variety of monitoring and educational tasks. The ship carries high-tech instruments to collect data from the water column, sediments, and even marine life. The Bold also carries onboard equipment that can take underwater video, side-scan sonar, a... | <urn:uuid:2d0d0052-c712-4ad6-89ec-a82e943091b9> | 3.703125 | 2,037 | Knowledge Article | Science & Tech. | 53.947236 |
Number of stars en
The best estimated count of the total number of stars in a galaxy. It's primarily an estimate because of the inherent difficulty to ascertain the exact total body of galaxies and possible obscuring of portions of a galaxy by itself or intervening celestial objects between the observer and the observe... | <urn:uuid:3fb7d2a2-acce-4b9b-84b5-e39ee1a603f4> | 2.921875 | 135 | Structured Data | Science & Tech. | 30.965789 |
There’s a course at Yale University in which undergraduates travel to the Amazon rain forest to collect fungi.
The fungus samples are often nothing you’ve encountered. One of them, however, which will be featured in a paper accepted by a scientific journal, might solve the problem of polyurethane building up in our lan... | <urn:uuid:2d6808b0-5c98-46c6-849f-49b15d671b18> | 3.078125 | 221 | Truncated | Science & Tech. | 36.633347 |
The IDLgrTessellator class is a helper class that converts a simple concave polygon (or a simple polygon with holes) into a number of simple convex polygons (general triangles). A polygon is simple if it includes no duplicate vertices, if the edges intersect only at vertices, and exactly two edges meet at any vertex.
T... | <urn:uuid:55ea103e-d05b-4d17-afe3-3d22471f1685> | 2.71875 | 329 | Documentation | Software Dev. | 30.638619 |
Refraction at a Boundary
Need to see it? View The Broken Pencil animation from the Multimedia Physics Studios.Flickr Physics
Visit The Physics Classroom's Flickr Galleries and enjoy a photo overview of the topic of refraction and lenses.Flickr Physics
Visit The Physics Classroom's Flickr Galleries and enjoy the terrifi... | <urn:uuid:f573244e-5ac3-4fed-b8f9-567bac22c4bf> | 4.09375 | 1,417 | Tutorial | Science & Tech. | 58.77676 |
Copyright: This document has been placed in the Public Domain.
Many thanks to Bill Baxter, Jarrett Billingsley, Anders F Björklund, Lutger Blijdestijn, Thomas Kuehne, Pierre Rouleau and Max Samuha for their input, and to Walter Bright for making such a great language.
One of the great features of D is its’ fantastic su... | <urn:uuid:8c26b6c4-f47b-44dd-adb5-553017cb9d24> | 3.4375 | 3,926 | Documentation | Software Dev. | 65.643465 |
Dr. James McClintock, a renowned University of Alabama-Birmingham marine biologist who has conducted research in Antarctica for more than 25 years, told me the following story.
"You work in a scientific lab in the quietest place on Earth - Antarctica.
"There's a crack! Boom!
"You rush to the window of your remote lab w... | <urn:uuid:e3719562-5a0a-40ad-8e62-37bffdd44b6e> | 2.78125 | 935 | Nonfiction Writing | Science & Tech. | 44.132143 |
Just three Latin words unlock the meanings of most cloud names: Stratus meaning layer; cumulus, the word for lump or heap; and cirrus, which means wispy or curly. Add to this basic group the word nimbus, which means 'pouring down rain,' alto, the word meaning middle, and fracto for broken and you've got almost the enti... | <urn:uuid:6654aabd-6844-42a1-aa27-240393908739> | 3.453125 | 313 | Audio Transcript | Science & Tech. | 56.412175 |
Galileo Finds Veritable Chemical Factory On Europa
News story originally written on March 29, 1999
Scientists using instruments aboard the Galileo spacecraft have found
hydrogen peroxide on Jupiter's moon Europa
. This is added to the list
of chemicals such as sulfur dioxide, water ice, and carbon dioxide that
have alr... | <urn:uuid:da12cf53-daa9-4ff6-8f4d-b844e1254f90> | 3.15625 | 476 | Content Listing | Science & Tech. | 50.005108 |
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.
May 26, 1998
Explanation: Isn't the Sun round? Yes, but in the above picture, the Earth's atmosphere makes it appear almost square. Here a layer of ... | <urn:uuid:e6393952-ed60-4e2f-8be1-a3148fd67144> | 3.375 | 210 | Knowledge Article | Science & Tech. | 58.759634 |
The manmade changes pushing the planet toward a critical transition
Nature changes gradually—until it doesn’t. As the changes in an ecosystem pile up, they can push the system past a “critical threshold,” and then the change can become extremely fast (in relation to geological timescales) and unstoppable. And in a revi... | <urn:uuid:082ad00c-9939-40e5-bdcb-ef0b369ed52a> | 3.6875 | 263 | Truncated | Science & Tech. | 41.051789 |
People and other living beings depend on natural resources for food, shelter, and protection, as well as for generating energy and all the products we manufacture. With current consumption patterns, people are using these resources at an unsustainable rate. Many resources are at risk of becoming depleted.
The U.S. has ... | <urn:uuid:6e8d5e4d-a641-4ff5-aede-f7d38374f40b> | 3.8125 | 335 | Knowledge Article | Science & Tech. | 32.068728 |
A whispering gallery is usually a circular, hemispherical, elliptical or ellipsoidal enclosure, often beneath a dome or a vault, in which whispers can be heard clearly in other parts of the gallery. Such galleries can also be set up using two parabolic dishes. Sometimes the phenomenon is detected in caves.
A whispering... | <urn:uuid:f53e0151-721e-4b72-9a2e-414aac8f2f82> | 3.484375 | 1,108 | Knowledge Article | Science & Tech. | 50.96221 |
Why wait (), notify () and notifyAll () must be called from synchronized block or method in Java
Most of Java developer knows that wait() ,notify() and notifyAll() method of object class must have to be called inside synchronized method or synchronized block in Java but how many times we thought why ? Recently this que... | <urn:uuid:86f8b432-2bb3-48d1-af4d-d4d85a904118> | 3.671875 | 774 | Personal Blog | Software Dev. | 41.163405 |
Your estimates are not scale invariant, so I am trying to guess what you want from the picture.
A closed geodesic cuts your surface into two discs. Both have geodesic as a boundary, positive curvature and area $\le$ than area of your original surface. If geodesic is long, then (with the intrinsic metric) these discs lo... | <urn:uuid:bbdaa247-b383-4d03-ac96-36887f2e0b44> | 2.734375 | 248 | Q&A Forum | Science & Tech. | 57.357967 |
Return to Physics Index
Monegain, Louise J. Park Manor
1) Students will learn basic understanding of inertia.
2) Students will demonstrate some activities illustrating inertia.
3) Students will develop a basic understanding of Newton's laws of motion.
Balls various sizes, pie pans with one fourth slice removed, pennies... | <urn:uuid:36e6f5ef-921e-4991-8a06-69f079752c70> | 4.3125 | 354 | Tutorial | Science & Tech. | 57.706937 |
[en] The efficiency of the transmission of surface plasmon waves by use of a dielectric diffraction grating is discussed. The Kretschmann device allows us to obtain a surface plasmon resonance that consists of an absorption peak in the reflection spectrum. When surface plasmon resonance occurs, the TM-polarization mode... | <urn:uuid:abf25383-07bd-4879-8bed-60a2b7af74d1> | 2.78125 | 214 | Academic Writing | Science & Tech. | 21.615337 |
I love classic sci fi movies, but if some advanced alien being could make the whole Earth (as opposed to just the man-made parts) literally stand still, the end results would be nothing short of catastrophic.
You see, because most of Earth’s surface is covered with water, that water is hugely affected by the motion of ... | <urn:uuid:e9fb9166-bf59-4a4d-a97a-a3a2ae76a15a> | 3.4375 | 252 | Personal Blog | Science & Tech. | 47.550114 |
Green Tree Ant
A Green Tree Ant worker adopts an aggressive stance as it defends the nest.
A Green Tree Ant nest in the foliage of a tree.
An adult Moth Butterfly, Liphyra brassolis. The caterpillars of this butterfly live only inside Green Tree Ant nests where they feed on ant larvae and pupae.
Green Tree Ants, someti... | <urn:uuid:98919a77-eced-4777-9741-acd3e17805e4> | 3.53125 | 402 | Knowledge Article | Science & Tech. | 60.853901 |
This type of image shows heat based radiation from the infrared spectrum. In other words, the warmer the surface, the more infrared radiation it emits. For a satellite image, cooler surfaces are bright and warmer surfaces are dark. Since the atmosphere cools as you increase in altitude, clouds would show up as bright a... | <urn:uuid:2bc2e4e0-c73f-4d36-944b-09a8f26b4a58> | 3.125 | 124 | Knowledge Article | Science & Tech. | 60.908636 |
Threat of eutrophication to the Baltic Ecoregion
A widespread and persistent problem
Eutrophication it is a process where bodies of water, such as lakes, estuaries, or slow-moving streams, receive excess nutrients that stimulate excessive plant growth.
This enhanced plant growth, often called an algal bloom, reduces di... | <urn:uuid:ee26e634-1fd2-43bd-894f-25a168ff7293> | 3.84375 | 896 | Knowledge Article | Science & Tech. | 33.870112 |
It sounds like the plot to a science fiction story, but new scientific research hypothesizes that "advanced dinosaurs" may have evolved on other
planets in the universe.
In his report, Breslow discusses the age-old mystery of why the building blocks of terrestrial amino acids (which make up proteins), sugars, and
the g... | <urn:uuid:85914a65-a20f-45c3-aa70-d0580dbe2320> | 2.703125 | 213 | Comment Section | Science & Tech. | 47.038117 |
Rising in the dark
hours before dawn,
wandering Venus now shines
as the brilliant morning star.
Its close conjunction with the Moon on August 13 was
appreciated around planet Earth.
But skygazers in eastern Asia were also treated to
a lunar occultation,
the waning crescent Moon passing directly in front of the bright p... | <urn:uuid:24875a5d-047e-4eb3-94a1-626227e48c95> | 2.734375 | 167 | Truncated | Science & Tech. | 48.342572 |
Solar Neutrino Experiments
Neutrinos are ghostlike particles that were postulated by Wolfgang Pauli in 1930 on purely theoretical grounds and, until recently, were believed to have zero mass. They are thought to be produced in the nuclear reactions that provide the sun's energy. They rain down on each square inch of th... | <urn:uuid:5293fcfb-3889-4ffc-a74f-e9824a93e7c9> | 4.25 | 591 | Knowledge Article | Science & Tech. | 35.897327 |
Photo Credit: Scott Gravette
Scientific name: Carphophis amoenus ssp.
Other name: None
Description: There are two subspecies of worm snakes, Eastern worm snake Carphophis amoenus amoenus and Midwest worm snake Carphophis amoenus helenae. Worm snakes Carphophis amoenus ssp. are small secretive snakes only reaching 13 in... | <urn:uuid:584e8f89-7bf8-441d-8b1a-b2ed7bda5520> | 3.265625 | 516 | Knowledge Article | Science & Tech. | 50.1941 |
The issue of global climate change was identified decades ago. In fact, it was first noted in the media in the 1930s, when a prolonged period of warm weather demanded explanation, yet interest in the matter disappeared as cooler temperatures returned. For the past decade, most experts have accepted climate change as a ... | <urn:uuid:3f3fcd06-76cd-4754-972c-625ca2030beb> | 2.84375 | 995 | Academic Writing | Science & Tech. | 25.413585 |
Libraries are handled a little differently for the Java grade. Instead of compiling object code into a static or shared library, the class files are added to a jar (Java ARchive) file of the form library-name.jar.
To create or install a Java library, simply specify that you want to use the java grade, either by setting... | <urn:uuid:39d2eade-08f8-4aef-af7f-c415fc2d91ac> | 3.125 | 199 | Tutorial | Software Dev. | 38.146767 |
The Cassini probe may have already collected data that could reveal the presence of life on Saturn's moon Enceladus, a new study argues. But mission scientists say teasing out the subtle signature of life may prove difficult.
Researchers have been fascinated with Enceladus since July 2005, when Cassini revealed a drama... | <urn:uuid:a714a25f-fea9-48fc-aa9f-dfa118b5d1ca> | 3.96875 | 1,308 | Comment Section | Science & Tech. | 44.244441 |
A few years ago, I decided that I needed to know more about the history of science, so naturally I volunteered to teach the subject. In working up my lectures, I was struck with the fact that in the ancient world, astronomy reached what from a modern perspective was a much higher level of accuracy and sophistication th... | <urn:uuid:3cb64f11-a3d4-471d-8b76-fd94ca6e75fa> | 3.859375 | 522 | Personal Blog | Science & Tech. | 45.616693 |
This interactive activity from NOVA scienceNOW reviews several potential means of storing carbon dioxide (CO2) captured from industrial sources. Among the featured ideas are technologies that deliver compressed CO2 to underground cavities, saline aquifers, and the deep seabed. The benefit of storing, or sequestering, c... | <urn:uuid:88a43e2e-e54d-483b-adec-27075f6d6017> | 4.25 | 861 | Knowledge Article | Science & Tech. | 22.900349 |
Need help on Arrays Urgently ???
Posted by Java_Learner (Java_Learner), 23 March 2003hi.. there. Is there any great java programmers out there who can help me on Arrays ? I am really lose in it and i am trying to create a programme using Arrays. So if anyone out there who is kind enough to help me pls reply in either t... | <urn:uuid:46a0bc8b-46aa-4dc8-8df5-8d11f2f61b43> | 3.1875 | 726 | Comment Section | Software Dev. | 61.375416 |
Corophium volutator (known locally as mud shrimp) are actually not shrimp but a member of a suborder of crustaceans known as amphipods. These fine fellows inhabit the upper layers of mud in the Bay of Fundy and play a vital role in this complex ecosystem.
Corophium keeps a very low profile: so low in fact that until a ... | <urn:uuid:3b29a7d0-1ef3-4698-9891-981374a0be82> | 3.171875 | 180 | Personal Blog | Science & Tech. | 32.563333 |
Acanthaster planci are red colored echinoderms protected by thorn-like spines. They grow to a diameter up to 40 cm across. They have 12-19 arms extending from their center. These animals do not have a head, and are pentamerically symmetrical about the axis of the mouth. Acanthaster planci have tubed feet, or branched t... | <urn:uuid:29dc0975-fb39-46aa-971f-5c3cebeb394e> | 3.0625 | 113 | Knowledge Article | Science & Tech. | 44.470158 |
The pavement material that cars drive on may wind up in their fuel tanks as scientists seek ways of transforming asphaltenes - the main component of asphalt - into an abundant new source of fuel, according to the cover story in the current issue of Chemical and Engineering News, ACS' weekly newsmagazine...
- Component ... | <urn:uuid:45bcbaf6-54af-4753-8919-7ef1cc149156> | 2.765625 | 191 | Content Listing | Science & Tech. | 45.624939 |
"Earth's north magnetic pole is drifting away from North America and toward Siberia at such a clip that Alaska might lose its spectacular Northern Lights in the next 50 years, scientists said Thursday.
Despite accelerated movement over the past century, the possibility that Earth's modestly fading magnetic field will c... | <urn:uuid:ce523f79-8529-46ef-b3cd-13f41acb24f6> | 3.265625 | 159 | Personal Blog | Science & Tech. | 41.144524 |
can occur anywhere in the world where convective storms occur. Near mountainous
terrain, the additional uplift often increases hail occurrences. Some of the
highest frequencies of hail occur in western China and
northern India. Hail
also occurs frequently near the Alps in Europe, Andes in S.
America, and in mountainous... | <urn:uuid:1ede578d-97b4-4a66-9199-30e9a4f6c720> | 3.9375 | 519 | Knowledge Article | Science & Tech. | 52.648503 |
I am usually questioned by friends regarding Java IO. Questions usually revolve between byte and char conversion and what determines the codepage used. My answer to them is always the same: if you are using Streams you are dealing with bytes and if you are dealing with Readers and Writers then you are dealing with Char... | <urn:uuid:671cbf0e-378c-4b50-ab3a-f89a495b5e8f> | 2.921875 | 332 | Personal Blog | Software Dev. | 37.118718 |
Creating a list/tuple/dictionary
ajw126NO at SPAMyork.ac.uk
Tue Jan 7 15:26:59 CET 2003
When the Python interpreter comes across a statement such as...
a = [1,2,3]
how does it go about creating that list?
Does it convert the code into something equivalent to
a =
(although obviously it would call the C functions direct... | <urn:uuid:1d7a0832-6a97-4d4c-b5bb-7adc13f68a4d> | 3 | 155 | Q&A Forum | Software Dev. | 67.799167 |
volume with calculus
find the volume of the solid whose base is the area bounded by the lines y=1-(x/2), y=(x/2)-1 and x=0 and whose cross sections perpendicular to the x axis are equilateral triangles.
do i do v=the integral of (1/2)(2x*x) dx
that seems too simple...
also, find the volume of the solid generated by rev... | <urn:uuid:af03f186-fb4b-49f1-aade-3dde5de459e0> | 2.828125 | 203 | Q&A Forum | Science & Tech. | 84.7315 |
ABCD is a trapezium, AB and CD are parallel sides, M is the midpoint of AD. Prove that the area of the triangle BMC is half the area of the trapezium.
I let A be the origin, then the vectors of AB, AC, and AD respectively are b, c, d. So vector AM=
Area of the trapezium=
vector CM= vector CB=
My problem is I am stuck h... | <urn:uuid:35e4dae0-51fe-4896-b7ca-0893bf7f8def> | 3.328125 | 121 | Q&A Forum | Science & Tech. | 73.948182 |
Recent "the sky is falling" news stories have dealt with the fall from orbit of the Mir Space Station rather than NEO impacts. The press and public are clearly interested in the risk of falling objects, but sometimes risks are perceived in ways that are quite different from the hazard as calculated numerically. The fol... | <urn:uuid:4baec056-e10b-4223-a5ec-6c66a3cfc126> | 3.125 | 704 | Nonfiction Writing | Science & Tech. | 58.301013 |
Scan is a collective algorithm that performs partial reductions on data provided by each process in the communicator. Scan combines the arrays stored by each process into partial results delivered to each process. The arrays are combined in a user-defined way, specified via a delegate that will be applied elementwise t... | <urn:uuid:ee43273a-eb5a-4035-ad9d-6fde737b0523> | 2.90625 | 483 | Documentation | Software Dev. | 60.350325 |
Atoms, Elements, Compounds
the time the Curies
discovered polonium and radium, identifying new chemical elements was
one of the highest goals a scientist could hope to reach. A chemical
element is a substance that
contains only one kind of atom.
If you keep dividing up such a substance, you finally get to the tiny
atom... | <urn:uuid:9d209525-3e68-4140-8c20-ac42c189e5f4> | 3.609375 | 242 | Knowledge Article | Science & Tech. | 39.400269 |
Why No Explosion?Science brain teasers require understanding of the physical or biological world and the laws that govern it.
It is scientific fact that if all else is held constant, the pressure of a gas varies directly with its temperature. In other words, if you have a gas in a sealed, insulated, rigid container and... | <urn:uuid:8bbb4369-b8bc-4dee-99ef-6c1a295599ca> | 3.671875 | 675 | Personal Blog | Science & Tech. | 64.620179 |
|Figure 2-3: Components of the terrestrial carbon pool (compiled
and amplified from Apps and Price, 1996).
To fully account for carbon at a site, one must examine the forest, the crops, and the soils as a dynamic multi-component ecosystem, above- and below-ground, with changes in biomass and soil organic matter as key ... | <urn:uuid:f9633ce4-5efc-4337-8fbd-3d72989f2884> | 3.40625 | 396 | Knowledge Article | Science & Tech. | 36.887571 |
Summary: THE GEOMETRY OF K3 SURFACES
LECTURES DELIVERED AT THE
SCUOLA MATEMATICA INTERUNIVERSITARIA
JULY 31--AUGUST 27, 1988
DAVID R. MORRISON
This is a course about K3 surfaces and several related topics. I want
to begin by working through an example which will illustrate some of
the techniques and results we will enc... | <urn:uuid:b5b3c86a-08e0-40fa-bbc0-ba8b5f9bc304> | 2.734375 | 232 | Academic Writing | Science & Tech. | 61.468521 |
Web edition: December 13, 2012
Print edition: December 29, 2012; Vol.182 #13 (p. 34)
According to one popular notion, everyone has a twin somewhere. Who knows, maybe the same is true for planets. Maybe there’s even a doppelgänger Earth orbiting at just the right distance from a sunlike star to support life. In his late... | <urn:uuid:c9218405-a15e-4b02-9a5e-f124aabe9c3a> | 3.109375 | 353 | Truncated | Science & Tech. | 47.021576 |
Young Cells in Old Brains [Preview]
The paradigm-shifting conclusion that adult brains can grow new neurons owes a lot to Elizabeth Gould's rats and monkeys
ELIZABETH GOULD: CHANGING MINDS
Image: PETER MURPHY
- Past thinking: Memories are stored by locked-in neural connections. Present: The brain can add neurons, perha... | <urn:uuid:432f2674-a5de-42b2-9ab7-169c23f586c7> | 2.953125 | 224 | Truncated | Science & Tech. | 45.971972 |
Corals Corals All corals belong to the Phylum Cnidaria (Ni-da´-ri-a). The cnidarians are a natural group of invertebrate animals that have a simpler organization than most other inverte
The corals discussed in this article are capable of growing very fast. Fragging is in your future whether you realize it or not. Some ... | <urn:uuid:afe86adf-7a3a-4729-8461-cced1e447b66> | 3.234375 | 449 | Truncated | Science & Tech. | 38.486573 |
The burning of fossil fuels like coal, gas and oil releases particles into the atmosphere. When fossil fuels are not burned completely, they produce black carbon -- otherwise known as soot. Soot looks like a black or brown powder and though it's made up of tiny particles, it can have a big impact on climate.
Black carb... | <urn:uuid:4bec3b16-8808-45c8-a741-13815cc65911> | 4.34375 | 597 | Knowledge Article | Science & Tech. | 54.113747 |
setfsuid - set user identity used for file system checks
#include /* glibc uses
int setfsuid(uid_t fsuid);
setfsuid sets the user ID that the Linux kernel uses
to check for all accesses to the file system. Normally, the
value of fsuid will shadow the value of the effective
user ID. In fact, whenever the effective user ... | <urn:uuid:5265ab6b-9d40-44b4-9169-5ca2d64eac58> | 3.03125 | 355 | Documentation | Software Dev. | 46.508047 |
Science Fair Project Encyclopedia
Mist is a phenomenon of a liquid in small droplets floating through air. It can occur naturally as part of natural weather or volcanic activity, and is common in cold air above hot water, in exhaled air in the cold, and in a steam room of a sauna. It can also be created artificially wi... | <urn:uuid:37be06d5-2ae6-4b0e-8da4-7e7644cd38a5> | 3.125 | 151 | Knowledge Article | Science & Tech. | 45.384341 |