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The plasma sea in which the solar system floats extends out to what is called the heliopause - where there is probably a double layer that separates our Sun's plasma from the lower voltage plasma that fills our arm of the Milky Way galaxy.
In solar flares and coronal mass ejections (CME's), charged particles are thrown... | <urn:uuid:6321ff35-1ca5-46fc-9881-088f62ff13b5> | 3.8125 | 1,186 | Knowledge Article | Science & Tech. | 47.247021 |
A small motor is mounted on the axis of a space probe with its rotor (the rotating part of the motor) parallel to the axis of the probe. its function of the probe about the axis. The moment of inertia of the probe is 6200 times that of the rotor. Initially, the probe and rotors are at rest. The motor is turned on and a... | <urn:uuid:93a946d6-5e0c-4ce9-9496-0811b13a2652> | 3.109375 | 102 | Q&A Forum | Science & Tech. | 65.604157 |
In recent decades, technologies have been developed that harness the energy of the sun, the wind, the earth and even the ocean. While current supplies of coal, oil, and natural gas are finite and will eventually run out, wind and solar are examples of renewable energy. These sources are not limited and can be tapped in... | <urn:uuid:6e2c2558-5ecc-4986-9c18-41d0c407b234> | 3.0625 | 168 | Knowledge Article | Science & Tech. | 30.401999 |
This tutorial is an introductory guide to get you started in the world of server-side-scripting and web databases. It covers installation and configuration of MySQL, Apache, and PHP. An example script is also included as a guide for making your own server-side-scripts.
This guide walks you through installing a web serv... | <urn:uuid:ca4060bd-d76c-488e-9ac5-577fe578a060> | 3.046875 | 606 | Tutorial | Software Dev. | 70.459576 |
This illustration demonstrates the charge separation that goes on within a thunderstorm which leads to lightning. Strong updrafts within the thunderstorm force moisture into colder portions of the atmosphere where supercooled water droplets, graupel (like snow pellets or small hail), and ice crystals form. What happens... | <urn:uuid:22f223d6-5b14-4f25-9b20-bd43dd0fb03a> | 3.90625 | 228 | Knowledge Article | Science & Tech. | 40.764785 |
Lead scientist Amber Straughn and observatory manager Paul Geithner answer questions during James Webb Space Telescope Night at the NASA Goddard Visitor Center on August 26, 2010.
Photo Credit: NASA Goddard Space Flight Center/Bill Hrybyk (Click image for full size.)
On a small farm in the Middle of Nowhere, Arkansas, ... | <urn:uuid:056517b5-4491-4ed2-8c49-c9b027bc451a> | 3.28125 | 2,055 | Audio Transcript | Science & Tech. | 45.406065 |
A geologic and oceanographic study of the waters and Continental Shelf of Gulf of the Farallones adjacent to the San Francisco Bay region. The results of the study provide a scientific basis to evaluate and monitor human impact on the marine environment.
Manual for research program on the nesting habits of sea turtles ... | <urn:uuid:3f7024c5-7abe-4b37-85cd-5b6e07add3f7> | 3.34375 | 270 | Content Listing | Science & Tech. | 28.222658 |
How a New Star Looks (Jun, 1935)
How a New Star Looks
WHEN Nova Herculis was announced in the papers, a few days before last Christmas, many people went out to look for it. As a matter of fact, it was a little disappointing as a naked-eye spectacle; it never came up to first magnitude (the smaller the magnitude, the br... | <urn:uuid:3b17de2b-a00e-4b17-b3ac-8acbd897d99b> | 4.125 | 635 | Personal Blog | Science & Tech. | 54.93069 |
Space.com: NASA has long planned to mine water on the Moon to supply human colonies and future space exploration. Now the discovery of small amounts of water across much of the lunar surface has shifted that vision into fast-forward, with the US space agency pursuing several promising technologies.
A hydrogen reduction... | <urn:uuid:0d189daf-09b9-420b-96ad-2401b5b1f0b8> | 3.890625 | 1,422 | Content Listing | Science & Tech. | 36.801962 |
Polar bears are considered by many to be marine mammals. The name Ursus maritimus means maritime bear. Their preferred habitat is the pack ice of the Arctic Ocean. The ice edge and pressure ridges where fractures and refreezing occur provide the best hunting ground. Bears will travel as much as 1,000 km north and south... | <urn:uuid:463d59d9-c217-49d6-b1b7-bf04b44fc04d> | 3.484375 | 288 | Knowledge Article | Science & Tech. | 58.836591 |
PreparedStatement in Java is one of several ways to execute SQL queries using JDBC API. Java provides Statement,
PreparedStatement and CallableStatement for executing queries. Out of these three, Statement is used for general purpose queries, PreparedStatement is used for executing parametric query and CallableStatemen... | <urn:uuid:515dfe0c-ced6-4bfc-936f-9c440b9355ef> | 3.109375 | 1,437 | Tutorial | Software Dev. | 26.142544 |
JSON is a lightweight, text-based data interchange format that is used to serialize structured data for transmission over networks. It has three primitive data types: string, number, and Boolean. It has two data structures: array and object. An array is an ordered collection of values, where the value can be a JSON pri... | <urn:uuid:3e524ffc-2e92-4bb7-a238-c0fa0a490f2b> | 3.96875 | 338 | Documentation | Software Dev. | 44.404113 |
I have two stars, both of which have Balmer lines at the same wavelength positions.
Why does this pattern exist?
Assuming by "depths of the Balmer lines" you mean how broad they are, this information can be used to determine the (surface) temperature of the star1. In particular, and that may be the only thing the homew... | <urn:uuid:d0c8c7b9-a17f-4f68-b365-3229d9dd52bd> | 3.75 | 299 | Q&A Forum | Science & Tech. | 45.976695 |
The concept of mass is one of the most fundamental notions in physics, comparable in importance only to those of space and time. But in contrast to the latter, which are the subject of innumerable physical and philosophical studies, the concept of mass has been but rarely investigated. Here Max Jammer, a leading philos... | <urn:uuid:d46147ec-a55c-400f-b9f8-e3e4d024839c> | 2.734375 | 786 | Knowledge Article | Science & Tech. | 26.927644 |
Science subject and location tags
Articles, documents and multimedia from ABC Science
Friday, 26 April 2013
A bizarre stellar system made up of two dead stars 7000 light-years away has put Einstein's famous general theory of relativity under its most extreme test yet.
Wednesday, 16 January 2013
Russia will resume a lon... | <urn:uuid:0e12a322-990c-4ef4-95fe-b58fc4b849ca> | 2.96875 | 513 | Content Listing | Science & Tech. | 49.91849 |
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.
...is an integer greater than 2), they have two fewer hydrogen atoms than an alkane with the same number of carbon atoms. Cyclopropane (C3H6) is t... | <urn:uuid:8b3643ae-3c14-4e18-930b-3f1ffc0f5c56> | 3.65625 | 363 | Knowledge Article | Science & Tech. | 47.82151 |
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.
The biological significance of pteridine compounds (from Greek pteron, “wing”) has become apparent since the first known members of the group were... | <urn:uuid:37ada656-e0ac-4451-9547-02337ce27c15> | 3.59375 | 226 | Knowledge Article | Science & Tech. | 35.162329 |
'Mesoscale Convective' System
Yet heerein will I imitate the Sunne
Who doth permit the base contagious cloudes
To smother vp his Beauty from the world...
William Shakespeare, "Henry the Fourth", Actus Primus, Scaena Secunda.
Type "Mesoscale Convective system" looks on satellite images as a circle,
an oval, sometimes di... | <urn:uuid:6ae95bb9-93a6-4b55-adc2-75eef52316bd> | 2.859375 | 257 | Knowledge Article | Science & Tech. | 39.076944 |
Brook Snaketail Dragonfly
The beautiful brook snaketail dragonfly is listed as a species of special concern in New Jersey.
The beautiful brook snaketail dragonfly (Ophiogomphus aspersus) is listed as a species of special concern in New Jersey. A Threatened status listing has been proposed by the Endangered and Nongame ... | <urn:uuid:ffd4b0a7-2440-4429-96f3-33d32520ce13> | 3.046875 | 952 | Knowledge Article | Science & Tech. | 30.553554 |
Using GIS Mapping to Examine Influence of Forest and Box Spacing on Bluebird Nesting Success
In this project I was using GIS mapping to examine the effect of 2 environmental variables on the success of bluebird boxes on Wye Island. I monitored 50 boxes this year and used the mapping to see what effect forest proximity ... | <urn:uuid:ed19b30e-5495-4868-86c4-c6135126a004> | 3.296875 | 601 | Personal Blog | Science & Tech. | 53.688621 |
Sharing and Accessing Biodiversity Data Globally
Clicking on the Online Mapping link from the CBIF portal sends the user to a page with three links. The first link allows a user without specialized GIS knowledge to use the global index via WMS as just described. The second link leads to the Generic Point Mapper. With t... | <urn:uuid:b1cbd68c-f190-48f9-b6eb-d516cadb5fd7> | 2.859375 | 1,468 | Knowledge Article | Science & Tech. | 33.754449 |
Named Parameters in Hibernate Query
There is two types of query parameters binding in the Hibernate Query. One is positioned parameter and another one is named parameter. But, hibernate recommend to use the named parameters since it is more flexible and powerful compare to the positioned parameter. Here we will look in... | <urn:uuid:cfb27d76-4472-4a02-bf68-670d1c9e9e28> | 3.09375 | 356 | Tutorial | Software Dev. | 38.655699 |
What kind of language is Java? I've heard various phrases tossed around, like "object oriented," etc. And, as a low-level programmer highly proficient in something like Axe, would it be easy or hard to pick up?
It's easy to pick up if you have experience in other OOP languages.
Object Oriented Programming is like:
str1... | <urn:uuid:786e2316-3086-4e9c-99ea-191043ca844a> | 2.84375 | 319 | Comment Section | Software Dev. | 69.080301 |
The mechanics of creating a table are relatively straight forward. Being able to design a well thought out database that will scale to meet the needs of a large scale enterprise is a very challenging undertaking. In these examples we will be working through development of a fairly simple three table database. In doing ... | <urn:uuid:457a46b5-cf5b-460e-be31-f71d7ce3e421> | 3.0625 | 451 | Tutorial | Software Dev. | 41.739007 |
This page is the start of the tour of the Evolution of the Solar System. The navigation button for the tour can be found at the top of the page. With a subject like the evolution of the solar system, there are a lot of things to discuss; the initial formation of the Sun, the 9 planets, various interesting moons, and th... | <urn:uuid:d75dfcf7-3242-4b18-b0b8-53a774f48d2c> | 2.96875 | 167 | Truncated | Science & Tech. | 68.192568 |
PBS' premier science series helps viewers of all ages explore the science behind the headlines. Along the way, NOVA programs demystify science and technology, and highlight the people involved in scientific pursuits.
Wednesday, January 2 at 9:00 p.m. Doomsday Volcanoes
The eruption of Iceland’s Eyjafjallajökull volcano... | <urn:uuid:0ee0dcd2-52fa-45bc-8c2b-fdefb7c8d306> | 3.15625 | 572 | Content Listing | Science & Tech. | 47.249101 |
Chel Anderson is a North Shore naturalist. She lives here in Cook County and joins us periodically to talk about phenology or what’s going on in the woods right now. Welcome, Chel!
Well, one of the most common tracks we see in winter snow is the familiar snowshoe hare. So, what are they doing to get ready for spring?
A... | <urn:uuid:d029049a-8e83-439d-bdcc-92859927c3c7> | 2.859375 | 1,388 | Audio Transcript | Science & Tech. | 66.205302 |
eqn not supported
If point antialiasing is disabled, the actual size is determined by rounding the supplied size to the nearest integer. (If the rounding results in the value 0, it is as if the point size were 1.) If the rounded size is odd, then the center point ($ x $, $ y $) of the pixel fragment that represents the... | <urn:uuid:6767456b-22ef-493f-9dee-c6cf86118e68> | 2.84375 | 603 | Documentation | Software Dev. | 31.528058 |
Radar studies of the vertical distribution of insects migrating over southern Britain: the influence of temperature inversions on nocturnal layer concentrations
Reynolds, D.R., Chapman, J.W., Edwards, A.S., Smith, A.D., Wood, C. R., Barlow, J. F. and Woiwod, I.P. (2005) Radar studies of the vertical distribution of ins... | <urn:uuid:df85ca36-dc0d-44e2-a86d-c833d08ccf42> | 2.71875 | 404 | Academic Writing | Science & Tech. | 38.208579 |
Two weeks ago, we published a new map of the Earth at night, built by Earth Observatory designers together with colleagues at the National Geophysical Data Center. That map—made possible by a new NASA and the National Oceanic and Atmospheric Administration (NOAA) satellite—showed the footprint of human civilization on ... | <urn:uuid:8ec2352c-e1b2-48b6-af5c-ce04e9f07ac6> | 3.84375 | 755 | Knowledge Article | Science & Tech. | 38.737404 |
Static Sub LineWidth ( Width As Float )
Specify the width of rasterized lines.
Specifies the width of rasterized lines.
The initial value is 1.
specifies the rasterized width of both aliased and antialiased
Using a line width other than 1 has different effects,
depending on whether line antialiasing is enabled.
To enab... | <urn:uuid:e7f54ffd-0c3a-412b-a6d1-2c31fd73de0a> | 2.6875 | 747 | Documentation | Software Dev. | 41.363927 |
June 2012 Wildfire Smoke Dispersion
Credit: NOAA Visualization Lab
The HYSPLIT wildfire smoke model run on June 29th, 2012 shows the cloud of smoke being emitted from many of the wildfires raging in the Western U.S. at that time.
The actual locations of these point-source pollutants can be seen as very high concentrati... | <urn:uuid:469d2737-8307-4e43-8e5c-ce7f2258acaa> | 3 | 105 | Knowledge Article | Science & Tech. | 44.229373 |
[whatwg] Physical quantities: <var> or <i>?
Jukka K. Korpela
jkorpela at cs.tut.fi
Thu Apr 14 07:02:18 PDT 2011
Looking at the nice summary (with examples) of text-level markup at
I started wondering why there is no example of markup for symbols of
physical quantities. The descriptions of individual elements or their
e... | <urn:uuid:2a85ed44-a8c1-44cd-9bb4-21f9dc322193> | 2.859375 | 533 | Comment Section | Software Dev. | 49.987727 |
I don't quite get this "string".find()
programmer.py at gmail.com
Thu Nov 11 21:04:56 CET 2004
Ahh, I see it now. It seems strange to me, but your find helped make
sense of it.
I guess I thought:
1) an empty string is like "nothing"
2) you can never find "nothing" in something
But I guess an empty string isn't nothing,... | <urn:uuid:0e9b8fa8-2270-49f2-be10-d9d9bd13ac2f> | 2.703125 | 298 | Comment Section | Software Dev. | 89.896429 |
a tank initially contains salt in the pores of inert materials and 10 gal of fresh water. The salt dissolved at a rate per min of 2 times the difference between 3lb/gal and the concentration of the brine. The two gal of fresh water enters the tank per min. How much salt will be dissolved in the 1st 10 min?
Can I get th... | <urn:uuid:8ec399b6-1ad9-43f9-90cf-c638271090d2> | 2.984375 | 133 | Q&A Forum | Science & Tech. | 88.391361 |
Here are three 'tricks' to amaze your friends. But the really
clever trick is explaining to them why these 'tricks' are maths not
magic. Like all good magicians, you should practice by trying. . . .
Write down a three-digit number Change the order of the digits to
get a different number Find the difference between the ... | <urn:uuid:0a3bb0e1-7e20-4b1a-8025-4b6cebb889d0> | 3.421875 | 1,695 | Content Listing | Science & Tech. | 74.789409 |
Major Section: PROGRAMMING
For non-negative integers,
(integer-length i) is the minimum number
of bits needed to represent the integer. Any integer can be
represented as a signed two's complement field with a minimum of
(+ (integer-length i) 1) bits.
The guard for
integer-length requires its argument to be an
Integer-l... | <urn:uuid:2c5a8c6a-08d8-496f-b9e8-2847ca0957c1> | 2.78125 | 97 | Documentation | Software Dev. | 41.53 |
Science subject and location tags
Articles, documents and multimedia from ABC Science
Thursday, 10 May 2012
A new study has found sand dunes on the red planet are at least five times more active than earlier estimates, being comparable to dune movement rates on Earth.
Wednesday, 9 May 2012
StarStuff Podcast Astronomers... | <urn:uuid:8bd65f11-27e6-4bed-a494-169249660ca6> | 2.890625 | 600 | Content Listing | Science & Tech. | 44.198176 |
A karyotype is the complete set of all chromosomes of a cell of any living organism. The chromosomes are arranged and displayed (often on a photo) in a standard format: in pairs, ordered by size. Karyotypes are examined in searches for chromosomal aberrations, and may be used to determine other macroscopically visible ... | <urn:uuid:783b2366-a0c3-49a7-9086-cf010c424f9d> | 3.875 | 352 | Knowledge Article | Science & Tech. | 29.038187 |
Can you tell a glass of sparkling mineral water from Alka Seltzer, a “just ripe” melon from one that should be eaten only after a few days?
We perceive our environment through our eyes and they can only detect certain light wavelengths. Actually there are many more wavelengths available (and insects are able to exploit... | <urn:uuid:e3251a5a-3569-4ac8-9a54-91193abfeace> | 2.8125 | 474 | Personal Blog | Science & Tech. | 40.06816 |
Error handling is an essential procedure in Visual Basic programming because it can help make the program error-free. An error-free program can run smoothly and efficiently, and the user does not have to face all sorts of problems such as program crash or system hang.
Errors often occur due to incorrect input from the ... | <urn:uuid:4fe99e90-7ffa-45fc-9670-bc1eca9227cf> | 3.859375 | 567 | Tutorial | Software Dev. | 47.12036 |
In many circumstances you may want to draw a DisplayObject into a Bitmap. Perhaps you want to take a 'snapshot' of a Sprite, or create a particle effect in which particles leave trails. This very important method became even more important in development for mobile as Bitmaps are easier to process for mobile devices th... | <urn:uuid:9bbe9b08-564c-4d20-9aca-7c4589630fe2> | 2.734375 | 999 | Tutorial | Software Dev. | 53.204228 |
Atmosphere Under Assault
The Plot Against Hurricanes
By Joel Carlinsky
July 17, 2010 -
The term "hurricane" is an official but arbitray designation for a tropical storm that reaches sustained wind speeds of more than 75 miles per hour. Thus a single storm might pick up speed and become a "hurricane", then lose speed an... | <urn:uuid:9187a69b-891f-4a07-b1ed-e0222c90db36> | 2.890625 | 1,634 | Personal Blog | Science & Tech. | 36.084188 |
Apollo 11 Mission
Lunar Sample Overview
Apollo 11 basalt 10049. This sample has a mass of 193 grams and is up to 10 centimeters across. (NASA/Johnson Space Center photograph S76-25456.)
Apollo 11 breccia 10018. This sample has a mass of 213 grams and is up to 8 centimeters across. (NASA/Johnson Space Center photograph ... | <urn:uuid:1026ee00-d5d9-4252-898c-1889371fae94> | 4.0625 | 597 | Knowledge Article | Science & Tech. | 55.437399 |
The capercaillie probably became extinct in Britain in the mid-eighteenth century, largely due to the destruction of native woodland habitat.
In 1837 birds from Sweden were reintroduced into Perthshire, and by the early 1970s there were around 20,000 birds living there. However, urgent conservation action was needed wh... | <urn:uuid:fa2840d7-1ae0-4a58-a717-b2cbd19bd978> | 3.953125 | 380 | Knowledge Article | Science & Tech. | 34.094133 |
Where the Birds Are
The consequences of even one bird smashing into a plane's windshield or being pulled into an engine can be disastrous
Although collisions with birds in flight are infrequent causes of airplane accidents, the consequences of even one bird smashing into a plane's windshield or being pulled into an eng... | <urn:uuid:f60dda88-2903-4a28-8cae-cb6128c3eb23> | 3.671875 | 346 | Knowledge Article | Science & Tech. | 42.022899 |
These are the Perl 6 Tablets, a comprehensive manual, aimed to support many different ways of learning. The content is nicely sorted and indexed and many links allow you to follow your interest freely. For a lightweight introduction, try the Perl 6 Tutorial. If its too easy, read the specs.
DISCLAIMER: This docs moved ... | <urn:uuid:7b7ea713-6018-48de-a00d-f1f8c9aa8a32> | 2.796875 | 308 | Content Listing | Software Dev. | 41.321152 |
The function presented here is useful if:
- You've got one environment used to create many targets (too many to start messing with).
- The environment is configured differently for different platforms/compilers/etc.
- Some platforms/compilers/etc. need an additional source file to be compiled in order to work properly.... | <urn:uuid:2e9f7b28-7a26-446c-939d-417ec23f4210> | 3.078125 | 727 | Documentation | Software Dev. | 38.511165 |
These two images were taken just a few seconds apart, in the time it took to readjust the slide and snap the shutter. An Amoeba proteus can move at the rate of about 5 mm per minute. They move by extending and retracting pseudopods (false feet) over the surface. They have one disk shaped nucleus, and a contractile vacu... | <urn:uuid:aabf68e7-b20f-4413-a214-b886bcc831b9> | 2.796875 | 108 | Truncated | Science & Tech. | 48.347556 |
Sandia Develops Mini-Solar Cells
Sandia National Laboratory has developed tiny photovoltaic cells. Each is about 10 times thinner than conventional cells and can be integrated into clothing, turning its wearer into a mini-charger. The glitter-sized cells are 14-20 micrometers thick which is 10 times thinner than existi... | <urn:uuid:a71cd557-1e1e-4533-a99e-8a4f1dfebb10> | 2.78125 | 147 | Truncated | Science & Tech. | 48.902619 |
|00000STT, where STT is the type. If S == 1 then the piece is a slider. |
The POD base type of class Type.
This class uses the same internal type as Code to store the type bits. It even uses the same bits (the three least significant bits). All other bits are garanteed zero.
If the third bit is set then the object repr... | <urn:uuid:f86c392c-f2ac-4576-8f5d-f838e8129e80> | 2.953125 | 131 | Documentation | Software Dev. | 78.776584 |
Any change in the balance between the quantity of energy absorbed compared to the amount emitted affects climate. The "greenhouse effect" is concerned with the infrared radiation given off by the earth. Part of this radiation is absorbed by the atmosphere, rather than being lost to space. The gases in the atmosphere th... | <urn:uuid:f07a471a-f709-406b-8d72-6e50a6299cce> | 4.21875 | 336 | Knowledge Article | Science & Tech. | 39.017308 |
A Scientist’s Blog from the Arctic:
By Steve Zack, Wildlife Conservation Society
Unraveling Mysteries of Migration
12 Jul 2011
“We have the Japan bird over here, and the China bird is nearby,” Wildlife Conservation Society
field assistant Lizzie Goodrick states confidently into the walkie-talkie. She is reporting to ou... | <urn:uuid:af16925f-0e60-4656-8cca-8e6618e9f04e> | 3.171875 | 1,598 | Nonfiction Writing | Science & Tech. | 41.787847 |
Currently, there is much emphasis on the study of magnetic properties of materials. While magnets date back to ancient times, new techniques have made it possible to use magnets in a wide variety of applications, as exemplified by flexible magnets. Perhaps the most common place to encounter flexible magnets is the refr... | <urn:uuid:c366aa1e-b0e5-466a-828f-731a83ed9471> | 3.03125 | 612 | Knowledge Article | Science & Tech. | 40.741129 |
Friday, April 20, 2012 - 17:30 in Earth & Climate
On the eve of Earth Day, find out which of the world's forests are on the brink.
- Mangroves among the most carbon-rich forests in the tropicsMon, 4 Apr 2011, 17:10:49 EDT
- Forest mortality and climate change: The big pictureSun, 9 Sep 2012, 16:03:11 EDT
- Forest Servi... | <urn:uuid:4ecdc302-231c-4dd8-b584-194742e64a37> | 3.171875 | 173 | Content Listing | Science & Tech. | 44.047335 |
CRAZY CLOUDS: The newly discovered Undulatus Asperatus!
Last week, several viewers submitted photos to the WDRB Weather Facebook Page of a strange and fascinating cloud feature the appeared across the area.
Now known as Undulatus Asperatus, until recently, this cloud was largely undocumented.
These clouds are character... | <urn:uuid:57fe3632-49f1-4e06-967a-01d4b2d073c1> | 2.765625 | 454 | Personal Blog | Science & Tech. | 30.171254 |
HYDROZOA, a class of Ccelenterata (q.v.) embracing the polyps, all of which bear a general resemblance to Hydra (q.vd. There are two alternating generations, that is, (1) the sessile asexual polyp, which gives rise to (2) a jelly fish or medusa. The hydroid polyp is like hydra, a two-layered vase-like sac, with a circl... | <urn:uuid:0b6a63cf-9b4c-4571-a9f7-d9428518eea0> | 2.90625 | 474 | Knowledge Article | Science & Tech. | 44.067456 |
|GLib Reference Manual|
Compiling the GLib package
Compiling the GLib Package — How to compile GLib itself
On UNIX, GLib uses the standard GNU build system, using autoconf for package configuration and resolving portability issues, automake for building makefiles that comply with the GNU Coding Standards, and libtool f... | <urn:uuid:dcc107a1-162a-4987-8dd5-a2ec12b78bad> | 3.265625 | 2,114 | Documentation | Software Dev. | 41.801166 |
(gdbint.info) Overall Structure
GDB consists of three major subsystems: user interface, symbol
handling (the "symbol side"), and target system handling (the "target
Ther user interface consists of several actual interfaces, plus
The symbol side consists of object file readers, debugging info
interpreters, symbol table ... | <urn:uuid:95cab212-c8f6-4610-a1c0-224930e5b10f> | 3.171875 | 678 | Documentation | Software Dev. | 34.678966 |
Some very early testing of fluorescence imaging in our optical tweezers instrument. A 10 kb long piece of DNA (ca 3 um long when stretched) is held between two optically trapped microspheres. The DNA is coated with a fluorescent dye (SYBR-gold) which is exited by a 488 nm blue laser and the fluorescence signal is colle... | <urn:uuid:7c4fc00d-50ed-44d8-bf8c-79f853f75561> | 3.046875 | 336 | Personal Blog | Science & Tech. | 60.089932 |
by Jeffrey M. Perkel
Today’s mass spectrometers are faster, more sophisticated and more sensitive than ever. Yet if the molecules that are fed into these machines aren’t charged, the machine is as blind as a bat.
That’s because mass spectrometers don’t actually measure a molecule’s mass, but rather its mass-to-charge r... | <urn:uuid:e64f8979-e16d-4b72-9e37-495a8e99081c> | 2.75 | 3,323 | Truncated | Science & Tech. | 34.457787 |
While some may hope that this column might define unit testing as a component of the software development process that we, as geo-developers, are allowed to ignore, our contention is that it is a critical component in any GIS software development effort. It is a facet of development that cannot be ignored.
An informal ... | <urn:uuid:e27953e5-4fc6-44ff-a7d7-2820b035d9de> | 2.765625 | 1,755 | Documentation | Software Dev. | 22.381565 |
Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopterygii (ray-finned fishes) > Synbranchiformes
(Spiny eels) > Mastacembelidae
Etymology: Macrognathus: Greek, makros = great + Greek, gnathos = jaw (Ref. 45335).
Environment / Climate / Range
Freshwater; ... | <urn:uuid:ad8f10b9-a1ae-4adb-bd29-98b25b07867b> | 3.015625 | 766 | Knowledge Article | Science & Tech. | 61.54359 |
Invisible ink made from germs? Seeing is believing
Author JACQUELINE DETWILER
When designing experiments, scientists don’t usually consider what kids might like for their birthday, but it seems Manuel Palacios and David Walt of Tufts University have arrived at the perfect present (were it at all appropriate for childre... | <urn:uuid:4a7595d4-59cc-4041-9151-97ce92224aac> | 3.40625 | 400 | Truncated | Science & Tech. | 51.588107 |
Elachistidae was expanded by Hodges (1998), following the suggestion of Minet (1990), to include eight subfamilies: Stenomatinae, Ethmiinae, Depressariinae, Elachistinae, Agonoxeniinae, Hypertrophinae, Deuterogoniinae, and Aeolanthinae. Some of these families have previously been given family status or subfamily status... | <urn:uuid:1971f190-acd2-45a4-9ac4-8b72d9afa3c5> | 2.828125 | 2,677 | Knowledge Article | Science & Tech. | 29.897534 |
STARS rich in metals are more likely to host planets than your average star. This discovery will help astronomers refine how they search for planets, and is already providing fresh clues to how planets form.
In a survey of 754 nearby stars, those with roughly the same amount of iron and other metals as the sun have an ... | <urn:uuid:b60a2bdb-e826-4532-b2d2-9c8a8e9d778d> | 3.609375 | 171 | Truncated | Science & Tech. | 60.17 |
Glauber – the father of quantum optics
that Roy Glauber took up was to formulate a theory
that gave optics a quantum-mechanical explanation
too. He succeeded in describing a general method
for observing photons which gave a correct picture
of, for example, the difference between light from
a laser and from an ordinary ... | <urn:uuid:bdb0347f-ce1c-410b-92e9-b4a5bb49cc1a> | 3.1875 | 73 | Knowledge Article | Science & Tech. | 29.718864 |
Jenny Ribble submitted a handmade Ask Todd asking "If heat rises, why is it so cold in the mountains?"
Well Jenny, that's a great question!
It has to do with two things: air density and altitude.
Air is a poor insulator of heat in general, and is heated from below, from the ground up. So the sun heats the ground first,... | <urn:uuid:3842eebf-2974-4b90-89ff-8eeae9aec47c> | 3.25 | 143 | Q&A Forum | Science & Tech. | 70.699343 |
Containers such as these usually contain industrial waste.
Click on image for full size
Septic tanks, city dumps, and watery waste from human activity may contaminate groundwater. Among many things which contribute to contamination are chemicals found in laundry detergents.
Lots of salt on icy roads in the winter may l... | <urn:uuid:e8a41e50-37d8-4fa0-a381-446f52e54c0c> | 3.328125 | 478 | Content Listing | Science & Tech. | 53.09158 |
Science Fair Project Encyclopedia
|Name, Symbol, Number||Oxygen, O, 8|
|Group, Period, Block||16 (VIA), 2, p|
|Density, Hardness||1.429 kg/m3, NA|
|Atomic weight||15.9994 g/mol|
|Atomic radius (calc.)||60 (48) pm|
|Covalent radius||73 pm|
|van der Waals radius||152 pm|
|e− 's per energy level||2, 6|
|Oxidation states (... | <urn:uuid:b265efbc-ef5b-4de7-95eb-15aed241d08e> | 3.765625 | 1,825 | Knowledge Article | Science & Tech. | 38.165444 |
One of the methods you can invoke on Strings is length(). The way you invoke a method on an Object is similar to the way you extract a field from an object; you use dot notation. For example:
int len = name.length(); System.out.println (len);
Notice the parentheses after length. They indicate that length is a method th... | <urn:uuid:58184f56-348f-49ed-8252-d8eb0d3aceb7> | 3.375 | 201 | Documentation | Software Dev. | 61.278791 |
|This article follows on from my earlier article about Application variables, and how they allow you to store "global" data for use by all your pages.|
Session variables are very similar. You can create them and store data in them in exactly the same way:
|// create a new Session variable to store the users name
Sessio... | <urn:uuid:35f8e42e-aa7f-44c0-9aef-7766d4ccae7a> | 3.03125 | 240 | Truncated | Software Dev. | 45.380743 |
The New York Times has a great article out this week, as we near the year anniversary of the Macondo Well blowout and the ensuing horror of the Gulf oil spill.
What has emerged in studies so far is not a final tally of damage, but a new window on the complexities of the gulf, and the vulnerabilities and capacities of b... | <urn:uuid:2bf80282-9f3f-4bf7-b250-29de3bb66a43> | 2.6875 | 644 | Personal Blog | Science & Tech. | 56.66248 |
(Submitted October 18, 1998)
What are Brown Dwarfs?
Brown dwarfs are small-size objects, believed to result from
condensations of fragments of molecular clouds.
A brown dwarf has a small mass, too low to ignite nuclear
fusion. Such a star, would be small, not much larger than Jupiter, and
warm from its contraction.
It ... | <urn:uuid:8be6bb03-bbfd-4abf-ab79-2d589b7518e0> | 3.765625 | 118 | Q&A Forum | Science & Tech. | 62.6375 |
The original superconductor was invented in 1911 by Dutch physicist, Heike Kammerlingh Onnes, when these superconductors are cooled, they act as a perfect conductors with no resistance. Onnes experimented with mercury, tin, and lead.
Meissner EffectIn 1933, Walther Meissner and R. Ochsenfeld discovered that superconduc... | <urn:uuid:edd3aa88-6d7d-4412-b8f0-6c9c8ca99648> | 4.21875 | 482 | Knowledge Article | Science & Tech. | 21.233215 |
In the global search for sustainable energy sources, photovoltaic (PV) cells are an area of keen interest because of their ability to convert absorbed sunlight to electricity through the interactions of photons (packets of light) and electrons in a semiconducting material.
In 1954 Bell Labs introduced the first modern ... | <urn:uuid:51a3d88d-740c-435d-b85e-0bb58299de43> | 3.8125 | 2,257 | Knowledge Article | Science & Tech. | 34.092543 |
App::Chart::Timebase -- timebases
App::Chart::Timebase object represents a date/time period and a starting point.
Dates in a timebase are integers starting from 0 for the starting point. For example a timebase might be weeks starting from 19 Nov 2007, in which case that week is 0, the following week is 1, etc. Methods ... | <urn:uuid:a5a63865-c357-475c-89da-467faf24ea4b> | 2.921875 | 751 | Documentation | Software Dev. | 53.221487 |
Why is Earth so dry?
A new analysis of the common model explaining how the planets formed around our Sun uncovers a possible reason for Earth's comparative dryness.
July 17, 2012
With large swaths of oceans, rivers that snake for hundreds of miles, and behemoth glaciers near the North and South Poles, Earth doesn't see... | <urn:uuid:7c808bbe-2a83-4afa-ae45-b57b0235f477> | 4.28125 | 1,102 | Knowledge Article | Science & Tech. | 53.436458 |
nuclear physicist. He made fundamental contributions to molecular beam spectroscopy,
mass spectrometry, and electron acceleration technology. In 1989 he shared
the Nobel prize for physics with US scientists
Norman Ramsey and
for his development of the ion trap, or Paul trap, used to store single
atoms long enough to ma... | <urn:uuid:bd46fbc4-bc21-4e35-9e8d-73d35c61e109> | 2.9375 | 114 | Knowledge Article | Science & Tech. | 30.014209 |
Copyright © 2009 All rights reserved.
Current Biology, Volume 19, Issue 17, R720, 15 September 2009
FeatureAdd/View Comments (0)
New elm hopes
- A new project is hoping to help restore one devastated British tree. Nigel Williams reports.
Britain's population of elm trees, one of the most desirable sources of hardwood t... | <urn:uuid:92b9f02b-3c95-440f-acf0-0ea3b17c217a> | 3.65625 | 364 | Truncated | Science & Tech. | 36.725871 |
he Resource Description Framework (RDF)
and Web Ontology Language (OWL)
are important technologies driving development on the road to the semantic web. The former is a set of World Wide Web Consortium (W3C)
specifications that provide a model for representing metadata through specific statements, or triples
, made up o... | <urn:uuid:da431171-b032-4c10-9fa4-14adbbbb9796> | 3.78125 | 987 | Knowledge Article | Software Dev. | 24.042573 |
Computer languages reflect the goals, target audiences, and to some degree the personalities of their creators and their communities. As a result, even languages that are created with similar goals in mind may yield highly disparate final results, depending on how their communities understand those goals. Ruby, Clojure... | <urn:uuid:63e8faca-3e79-4ba1-92b5-a8d4e609545e> | 2.765625 | 408 | Nonfiction Writing | Software Dev. | 46.435219 |
Name: Mara N.
I have a spider in my house that is in a cocoon. Can you
please tell what it is doing? Is it laying eggs that in turn will create
more spiders? Please help. Thank you.
Spiders do not pupate in cocoons like insects, as far as I know the only stage of a spider life cycle
that includes a cocoon-like structur... | <urn:uuid:a4436544-8630-40be-aae3-d21af48b5a8c> | 3.109375 | 188 | Q&A Forum | Science & Tech. | 67.795659 |
An unusually strong storm moved across the Arctic earlier this week, bringing heavy winds and rain to Alaska and locations poleward. One of the most pronounced effects of the storm was a shift in Arctic sea ice concentrations. This image uses data from the SSMI/S microwave sensor on board the DMSP satellite to show the... | <urn:uuid:5003e8d8-8eb5-4c65-8d02-e06b89f62e77> | 3.421875 | 192 | Knowledge Article | Science & Tech. | 37.740196 |
Summary: rock samples. These results led to the slip-
weakening model, in which friction was
assumed to decrease as slip on the fault
increased. The key model parameter was the
slip-weakening distance (the amount of slip
required to reduce friction at high speeds).
This phenomenological model avoided the
difficult ques... | <urn:uuid:62519b71-3d6d-4602-b8fb-827c557a296b> | 3.34375 | 200 | Academic Writing | Science & Tech. | 38.468478 |
|On October 6, 2010 youth in the Twin Cities joined hundreds of thousands of young people across the nation as part of 4-HNational Youth Science Day, and conducted one simultaneous experiment: 4-H2O, the 2010 National Science Experiment. |
4-H2O showed youth how carbon dioxide can affect aquatic animals, plants and oth... | <urn:uuid:8aaa215e-589f-41f9-8aa2-861eaa5bab3b> | 2.84375 | 124 | Content Listing | Science & Tech. | 25.503636 |
In our previous article GPGPU for Java Programming we showed how to setup an environment to execute CUDA from within java code. However the previous article focused only on setting up the environment leaving the subject of parallelism untouched. In this article we will see how we can utilize a GPU do what is doing best... | <urn:uuid:e3b22918-6f50-44a2-bfa3-75f9c568c0dd> | 2.984375 | 109 | Comment Section | Software Dev. | 42.674858 |
Scientific name: Thymelicus sylvestris
A small butterfly with a darting flight, widespread England and Wales
Bright orange-brown wings held with forewings angled above hind wings. Males have thin black line through centre of fore-wing. Essex Skipper is similar but has black tips to antenna (best viewed head on) and sho... | <urn:uuid:0cc919a9-87f8-4b7f-97ec-98dc858f6d7e> | 3.5625 | 455 | Knowledge Article | Science & Tech. | 30.814091 |
Re: Question about using telescoping with recurrence in studying algorithms.
- From: Martin Eisenberg <martin.eisenberg@xxxxxxx>
- Date: 3 Feb 2006 21:45:20 GMT
I am relatively new to the study of algorithms, do not have an
extensive background in mathematics, and find some of the steps
in solving an equation to repres... | <urn:uuid:f1cc2d9c-5d47-4ebb-9aec-9be381d4627a> | 2.734375 | 346 | Comment Section | Software Dev. | 55.857366 |
A quantitative survey of the ecology of mosses in the McMurdo Sound region was conducted in the 1976/77 field season. Moss was found around streams below the Rhone, Hughes and Calkin Glaciers in the Taylor Valley, the moraines below the Hobbs Glacier and in the Salmon, Garwood and Towle Valleys, and in the Scott Base, ... | <urn:uuid:596ff182-173f-4310-b4fc-05bd99a2d205> | 3 | 221 | Academic Writing | Science & Tech. | 51.420476 |
Search Loci: Convergence:
To the pure geometer the radius of curvature is an incidental characteristic - like the grin of the Cheshire cat. To the physicist it is an indispensable characteristic. It would be going too far to say that to the physicist the cat is merely incidental to the grin. Physics is concerned with i... | <urn:uuid:1a6ff4ec-8df7-4a0d-b9cc-c5cf4285f119> | 2.921875 | 258 | Academic Writing | Science & Tech. | 37.798384 |
Although plants are firmly rooted in the ground, they do move: sunflowers track the Sun across the sky; daffodils turn their floral faces away from the wind as it blows. Most plant motion is either quite slow (the sunflower), or driven by external factors (the wind on the daffodil). Herbal hustle caused by internal for... | <urn:uuid:6057b3ed-bc53-46a9-9ecb-44a71baf52f9> | 3.671875 | 753 | Knowledge Article | Science & Tech. | 47.584375 |
Gravity as a Wave
Name: David H.
If, as it is suspected, that gravitons exist and that
gravity is radiated, shouldn't gravity have wave properties? And
couldn't this suspected wave property of gravitons be used to show they
do exist? Which leads to a more practicle question, If gravity is shown
to have wave properties ... | <urn:uuid:3c6fd9ad-61e1-4f72-a7bc-3960cad882c5> | 3.078125 | 333 | Audio Transcript | Science & Tech. | 47.972289 |
BACKGROUND: Thundersnow is a thunderstorm that has snow reaching the surface instead of rain. Usually thunder and lightning are more commonly observed in warm seasons. A severe thundersnow occurs when the snow is accompanied by hail that is at least three-fourth of an inch in diameter, or when wind speeds reach at leas... | <urn:uuid:4b4184d0-44ef-41e7-83a6-46c35d16966a> | 4.28125 | 554 | Knowledge Article | Science & Tech. | 43.897792 |
September 6, 2010
With the exception of a Great White, or possibly an Oceanic White-tip (on a bad day), nothing terrifies me more than the prospect of meeting a 20ft (6m) Saltwater ‘Estuarine’ Crocodile out in the open Ocean. And apparently that’s not as unlikely as I would have hoped for!
Despite being poor swimmers, ... | <urn:uuid:e53c5989-f1e3-4e27-a033-ab6613ebe5f1> | 3.109375 | 737 | Content Listing | Science & Tech. | 37.525 |
nuclear reaction equilibrium
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.
origin of chemical elements
Finally, at temperatures around 4 × 10 9 K, an approximation to nuclear statistical equil... | <urn:uuid:62da90f6-4a3a-45b2-91ea-ed0f382ee49a> | 3.515625 | 132 | Knowledge Article | Science & Tech. | 41.111646 |
A very small atom can cast a very large shadow. Well, not literally, but figuratively. Researchers at Griffith University have managed to snap the first image of a single atom's shadow and, while the dark spot may be physically small, the implications for the field of quantum computing are huge. The team of scientists ... | <urn:uuid:bbdd7e34-e4f9-4029-938b-24b2fbf6c87e> | 3.734375 | 209 | Truncated | Science & Tech. | 35.026175 |
A protein is a string of amino acids, which you can think of, roughly, as a necklace of multi-colored beads. A protein, however, twists and folds into a shape that’s less like a necklace than a pretzel, and each protein has its own unique pretzel shape, determined by which beads are on the necklace and in what sequence... | <urn:uuid:b2e2654a-ad08-40e9-8167-63d05e326905> | 3.421875 | 1,958 | Knowledge Article | Science & Tech. | 34.894361 |
Nov. 15, 2006 Most governments around the world set conservation policy based on the assumption that resource exploitation and species protection can co-exist in the same place. These policies have led to Orwellian "marine protected areas" that host commercial fishing operations, leading one to wonder who's protecting ... | <urn:uuid:9ce7a7a0-66d3-4cbf-8217-8ea222c91ce0> | 3.203125 | 1,162 | Truncated | Science & Tech. | 44.624144 |
A fish out of water is not usually a graceful or impressive sight, unless that fish is flying—or hovering inside a laboratory wind tunnel.
The members of the flying fish family soar above the waves on unusually large pectoral and pelvic fins, which act as wings. Although scientists have studied the anatomy and behavior... | <urn:uuid:96eb348d-4ec1-4bb3-a54f-83bcdaab2c8a> | 3.875 | 1,281 | Knowledge Article | Science & Tech. | 39.411748 |