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Some scientists say it's an exciting "start". We take a boat to see the results. At the moment, we're whizzing down a channel about a few miles downstream from Caernarvon.
Denise Reed spends a lot of her life in these wetlands: she studies them for Louisiana State University. Reed would make a great scout leadershe's g... | <urn:uuid:75e536bc-b651-4d8e-87c9-5ed446966253> | 3.09375 | 477 | Audio Transcript | Science & Tech. | 71.227569 | 700 |
Ever see a monarch butterfly?
They have bright orange and black wings, and every year they fly from Canada to Mexico and then back again. Each individual butterfly doesn’t make the trip, but females lay eggs along the way and their offspring continue on.
What a trip!
Some people think monarch butterflies are in danger ... | <urn:uuid:1bdcc472-c55c-4506-a05a-5c28629a7118> | 3.765625 | 329 | Knowledge Article | Science & Tech. | 59.046274 | 701 |
Path of the solar eclipse…click for animation. (Credit: A.T. Sinclair/NASA).
This year’s big ticket astronomical event occurs over a sparsely populated but beautiful track of our planet; we’re talking about July 11th’s total solar eclipse. Of course, it isn’t often that an eclipse doesn’t occur over the windswept Arcti... | <urn:uuid:d2170d2e-bd07-4f81-9e1d-163040edab7e> | 2.578125 | 601 | Personal Blog | Science & Tech. | 52.187678 | 702 |
Conditions of Use
No planet is alike each other. They all have there uniqueness. Like Saturn has its rings and Jupiter has its big storm on it called the red dot. Some of the planets are different colors too. Like Uranus and Neptune are blue. Planets can be red, blue, and white. Also when you look up into the sky, you ... | <urn:uuid:62bee2b6-af39-4622-83de-06d9d332cc72> | 3.203125 | 394 | Personal Blog | Science & Tech. | 76.043057 | 703 |
figure tag is used to provide the
structure for inserting a figure into a CNXML document. A figure
may contain an image, multimedia object, or caption tag.
<title>The World's Cutest Dog</title>
<media id="dogpic" alt="A dog sitting on a bed">
<image mime-type="image/jpeg" src="image1.jpg" />
Notice how cute the dog is ... | <urn:uuid:8c5551fd-d2dc-4ef1-966a-c0bcfa8ee5d2> | 2.875 | 327 | Documentation | Software Dev. | 48.186005 | 704 |
There is a passage in On intelligence about the differences between parallel processing in human versus computers :
From the dawn of the industrial revolution, people have viewed the
brain as some sort of machine. They knew there weren't gears and cogs
in the head, but it was the best metaphor they had. Somehow
informa... | <urn:uuid:4e2434c7-881c-47a7-922d-d412827921b3> | 3.625 | 1,378 | Q&A Forum | Science & Tech. | 53.529127 | 705 |
Date: January 1, 1959
Description: With the assumptions that Berthelot's equation of state accounts for molecular size and intermolecular force effects, and that changes in the vibrational heat capacities are given by a Planck term, expressions are developed for analyzing one-dimensional flows of a diatomic gas. The sp... | <urn:uuid:ab30b57c-df72-4818-9b0c-4b1841f9a159> | 3.046875 | 229 | Academic Writing | Science & Tech. | 31.567098 | 706 |
Starting in Python 1.4, Python provides a special make file for building make files for building dynamically-linked extensions and custom interpreters. The make file make file builds a make file that reflects various system variables determined by configure when the Python interpreter was built, so people building modu... | <urn:uuid:56ffe86e-709b-4226-ac03-dc5ca9d362d9> | 3.5 | 564 | Documentation | Software Dev. | 37.10875 | 707 |
Crustal Deformation Data
The US Geological Survey maintains a variety of fault and volcano monitoring sites around the western United States. Instruments at these sites include strainmeters, tiltmeters, magnetometers, creepmeters, pore pressure monitors, as well as other environmental parameters such as temperature and... | <urn:uuid:0b171463-4522-47dd-a5ae-5d070d0e93c5> | 3.3125 | 249 | Knowledge Article | Science & Tech. | 14.877727 | 708 |
Losing Stream in Our Battle to Predict and Prevent Invasive Species
Invasive species -- plants, animals, and microbes introduced to regions beyond their native range -- carry a global price tag of $1.4 trillion dollars. They are responsible for the loss of natural resources and biodiversity, damages to infrastructure, ... | <urn:uuid:adfc38a0-3a0c-4aae-97c5-b8d26dc4f8a7> | 3.34375 | 688 | Truncated | Science & Tech. | 17.600873 | 709 |
Proceedings of the International Astronomical Union (2005), 2004:4748 Cambridge University Press
Nowadays, more than one hundred extra-solar planets are known, and about a dozen of multi-planetary systems have been discovered. Most of them have been detected by the radial velocity (RV) method. The recovery of orbital p... | <urn:uuid:99b65116-b661-429a-b76e-06694fb16baa> | 2.6875 | 600 | Academic Writing | Science & Tech. | 27.195116 | 710 |
Provided by: freebsd-manpages_6.2-1_all
chooseproc, procrunnable, remrunqueue, setrunqueue - manage the queue of
extern struct rq itqueues;
extern struct rq rtqueues;
extern struct rq queues;
extern struct rq idqueues;
struct thread *
remrunqueue(struct thread *td);
setrunqueue(struct thread *td);
The run queue consist... | <urn:uuid:965a1a82-1964-4e33-9104-d78e49933092> | 2.65625 | 635 | Documentation | Software Dev. | 57.721263 | 711 |
Since you are having this confusion, I think it helps to consider the concepts of zero, infinity and "undefined".
In the most basic sense, division is the opposite of multiplication. Thus, the fact that 2 x 3 = 6 implies that 6 / 3 = 2.
1 x 0 = 0. Applying the above logic, 0 / 0 = 1. However, 2 x 0 = 0, so 0 / 0 must a... | <urn:uuid:f5ecf10f-b9a5-4afd-b6d2-50e952f5505b> | 3 | 565 | Q&A Forum | Science & Tech. | 71.001875 | 712 |
This shape would appear to be a rectangular prism.
The lateral area (area of every side except top and bottom) is given by the formula:
LA = ph (perimeter of the base multiplied by the height)
The surface area is then found by adding the LA to the areas of the Bases (top and bottom).
SA = LA + 2B
In your figure:
LA = 1... | <urn:uuid:511ac3d6-f1e2-46a9-9f2e-fc151104aeed> | 3.625 | 385 | Q&A Forum | Science & Tech. | 81.671952 | 713 |
As many know, this is the 150th anniversary of the publication of On the Origin of Species. If I may be so bold, one of the things that might distinguish our thinking about evolution in the last 50 years from the first hundred years might be the speed at which natural selection can operate. For a long time, we thought ... | <urn:uuid:30101667-01b1-4e3c-895f-4681fab593c3> | 3.109375 | 756 | Personal Blog | Science & Tech. | 54.689741 | 714 |
Modelling Southern Ocean krill population dynamics: biological processes generating fluctuations in the South Georgia ecosystem
Murphy, Eugene J.; Reid, Keith. 2001 Modelling Southern Ocean krill population dynamics: biological processes generating fluctuations in the South Georgia ecosystem. Marine Ecology Progress Se... | <urn:uuid:dcaf410c-6541-4d4e-8f5a-7faf564bd31d> | 2.6875 | 526 | Academic Writing | Science & Tech. | 14.833083 | 715 |
Press Release 09-118
The Abyss: Deepest Part of the Oceans No Longer Hidden
Nereus is first undersea vehicle to enable routine scientific investigation of ocean depths worldwide
June 2, 2009
The Abyss is a dark, deep place, but it's no longer hidden. At least when Nereus is on the scene. Nereus is a new type of deep-se... | <urn:uuid:0b399bfa-1b64-4462-8f87-da1687cad0f8> | 3.5625 | 2,123 | News (Org.) | Science & Tech. | 48.383328 | 716 |
Sparks - St. Elmo's Fire
Instructor/speaker: Prof. Walter Lewin
Last time I mentioned to you that charge resides at the surface of solid conductors but that it's not uniformly distributed.
Perhaps you remember that, unless it happens to be a sphere.
And I want to pursue that today.
If I had a solid conductor which say ... | <urn:uuid:0b039c0b-d2e7-44ec-92d2-bb2f379367ca> | 3.390625 | 9,350 | Audio Transcript | Science & Tech. | 67.335169 | 717 |
On November 25, 1952, three months after returning from England, Pauling finally made a serious stab at a structure for DNA.
The immediate spur was a Caltech biology seminar given by Robley Williams, a Berkeley professor who had done some amazing
work with an electron microscope. Through a complicated technique he was ... | <urn:uuid:bb706256-060f-4d0e-abdd-85b7887e5fba> | 3.921875 | 491 | Nonfiction Writing | Science & Tech. | 47.167632 | 718 |
Assume you have a planet of mass $M$ and radius $R$ and have a stationary spaceship at distance $4R$ from the center of the planet.If a projectile is launched from the spaceship of mass $m$ and velocity $v$ and just grazes the planet's surface, what will be the locus of the projectile?
I guess on Earth we take projecti... | <urn:uuid:1eec5fe0-6547-425a-bc78-ecd818d42c5a> | 2.921875 | 133 | Q&A Forum | Science & Tech. | 50.953205 | 719 |
Orbiting Retrievable Far and Extreme Ultraviolet Spectrometer
Launch Date: November 20, 1996
Mission Project Home Page - http://nssdc.gsfc.nasa.gov/nmc/masterCatalog.do?sc=1996-065B
The ORFEUS-SPAS II mission followed the ORFEUS-SPAS I mission flown in 1993, motivated by improvements in instrument performance and the c... | <urn:uuid:9ee8ab98-958f-405d-a451-31117863a388> | 2.921875 | 516 | Structured Data | Science & Tech. | 48.8451 | 720 |
Genome-sequencing data indicates that sponges were preceded by ctenophores, complex marine predators also called comb jellies.
The scientists presented their findings at the annual meeting for the Society for Integrative and Comparative Biology, in San Francisco, California.
Although they are gelatinous like jellyfish,... | <urn:uuid:0788be3c-ba50-4b6a-82f6-5035aa1dc9ce> | 3.875 | 506 | News Article | Science & Tech. | 31.777569 | 721 |
Mission Type: Flyby
Launch Vehicle: 8K78 (no. T103-16)
Launch Site: NIIP-5 / launch site 1
Spacecraft Mass: 893.5 kg
Spacecraft Instruments: 1) imaging system and 2) magnetometer
Spacecraft Dimensions: 3.3 m long and 1.0 m in diameter (4 m across with the solar panels and radiators deployed)
Deep Space Chronicle: A Chr... | <urn:uuid:53817c6b-e149-4531-b0dd-eea6dbc743b2> | 3.671875 | 369 | Knowledge Article | Science & Tech. | 55.919265 | 722 |
Seen at the Air Force Space and Missile Museum at Cape Canaveral Air Force Station, Florida — it’s a model of the
Dinosaur Dynasoar space plane:
Likely the most poorly-named program ever conceived, the Dynasoar (for dynamic soaring) was an early attempt at making a reusable manned space plane — essentially a mini-shutt... | <urn:uuid:608f1efc-7218-4646-849b-f4f9f32d2d66> | 3.25 | 280 | Personal Blog | Science & Tech. | 24.512033 | 723 |
There are multiple variations of IF statements:
The simple IF construct is used to evaluate a Boolean condition and execute an appropriate set of commands. For instance the following example determines whether the current day of the week is Friday:
IF DATEPART(dw, GETDATE()) = 6 BEGIN PRINT 'TGI Friday' END
We can easi... | <urn:uuid:637a87cc-2f87-44da-b4da-484fcca5a7e0> | 3.046875 | 920 | Documentation | Software Dev. | 32.728608 | 724 |
by Anne E. Egger, Ph.D.
We all see changes in the landscape around us, but your view of how fast things change is probably determined by where you live. If you live near the coast, you see daily, monthly, and yearly changes in the shape of the coastline. Deep in the interior of continents, change is less evident – rive... | <urn:uuid:1d8cdccb-098e-46d2-97a3-50a9d15430c5> | 4.0625 | 2,938 | Academic Writing | Science & Tech. | 39.073182 | 725 |
3-Tier Web Application Development
By Nannette Thacker
In web application development, three-tier architecture refers to separating the application process into three specific layers. What the user sees via a web browser is called the presentation tier and is content served from a web server. The middle tier performs t... | <urn:uuid:b20d7c6a-30c9-48e5-bbf6-e63641a13898> | 3.125 | 684 | Personal Blog | Software Dev. | 49.558458 | 726 |
RNA, ribonucleotide acid, is built up of a phosphate and nitrogenous base, a ribose sugar, and a phosphate. The bases used are adenine (A), cytosine (C), guanine (G) and uracil (U).
The chemical structure of RNA
There are four major groups of RNA: messenger RNA (mRNA), ribosomal RNA (rRNA), transfer RNA (tRNA) and sma... | <urn:uuid:f44e2793-140c-4216-818a-97021b96f284> | 3.90625 | 271 | Knowledge Article | Science & Tech. | 39.421532 | 727 |
|How the Membrane Protein AmtB Transports Ammonia|
Membrane proteins provide molecular-sized entry and exit portals for the various substances that pass into and out of cells. While life scientists have solved the structures of protein channels for ions, uncharged solutes, and even water, up to now they have only been ... | <urn:uuid:8f2b79b8-6ec8-43b1-bfb2-c21e1e8f0d36> | 2.859375 | 1,060 | Knowledge Article | Science & Tech. | 45.421513 | 728 |
Johannes Wilcke invented and then Alessandro Volta perfected the electrophorus over two hundred years ago. This device was quickly adopted by scientists throughout the world because it filled the need for a reliable and easy-to-use source of charge and voltage for experimental researches in electrostatics [Dibner, 1957... | <urn:uuid:c009257d-7858-4c03-97a8-b9e17e05b736> | 3.640625 | 1,544 | Tutorial | Science & Tech. | 43.789977 | 729 |
Science Fair Project Encyclopedia
GABA A receptor
The receptor is a multimeric transmembrane receptor that sits in the membrane of its neuron. Once bound to its ligand, the protein receptor changes confirmation within the membrane. This particular protein is configured in such a way as to allow certain ions to pass thr... | <urn:uuid:9474f750-6893-454a-97ac-d40a464838cf> | 3.75 | 365 | Knowledge Article | Science & Tech. | 25.149776 | 730 |
Telescopium, Indus, and Pavo - Downloadable article
Galaxies galore populate this trio of southern constellations.
March 3, 2009
|This downloadable article is from an Astronomy magazine 45-article series called "Celestial Portraits." The collection highlights all 88 constellations in the sky and explains how to observe... | <urn:uuid:8c98cbd5-d496-4c28-989a-afc0d6c2f9ea> | 2.953125 | 453 | Truncated | Science & Tech. | 49.291445 | 731 |
Solenoids produce magnetic fields that are relatively intense for
the amount of current they carry. To make a direct comparison,
consider a solenoid with 55 turns per centimeter, a radius of 1.25
cm, and a current of 0.170 A.
(a) Find the magnetic field at the center of the solenoid.
(b) What current must a long, strai... | <urn:uuid:41425225-25cf-43c5-9a50-529c0f09245d> | 3.484375 | 158 | Q&A Forum | Science & Tech. | 75.352751 | 732 |
5 things about Friday's space events
NASA says objects traveling in different directions
At least 1,000 people have been injured in Russia as the result of a meteor exploding in the air. The energy of the detonation appears to be equivalent to about 300 kilotons of TNT, said Margaret Campbell-Brown of the department of... | <urn:uuid:d6b23ced-0252-47b6-ac35-b7ca24e86aa8> | 3.46875 | 1,139 | Content Listing | Science & Tech. | 53.831926 | 733 |
is a project to create a GPL
that was started by Richard Stallman
, the creator of EMACS
. The GNU project is now overseen by the Free Software Foundation
, which Richard Stallman
GNU is a recursive acronym, and it stands for GNU's Not Unix. This, no doubt, is because of Richard Stallman's grounding in Lisp.
The GNU Pr... | <urn:uuid:0a2c6d37-67ce-4143-9f6b-60fe5ca7a85d> | 2.984375 | 140 | Knowledge Article | Software Dev. | 58.242236 | 734 |
From Physics Research Archive - Page 4
The Physics Classroom: Total Internal Reflection - Sep 16, 2010
The optical fiber in the photo above doesn't just guide the beam--the fiber produces the beam. Instead of a tube of helium and neon gas, or a piece of ruby, the "active medium" of this laser is added to the glass in t... | <urn:uuid:61a1c128-6043-43d5-acf4-3f35e7ec4ab0> | 2.703125 | 722 | Content Listing | Science & Tech. | 55.684473 | 735 |
Q A conducting rod of length l moves on two horizontal frictionless rails, as in the figure below. A constant force of magnitude 1.00 N moves the bar at a uniform speed of 2.00 m/s through a magnetic field vector B that is directed into the page. (a)What is the current in an 8 ohm resistor. (b)What is the rate of energ... | <urn:uuid:f182ceb6-b0c4-4d01-9109-ac52c1427299> | 3.390625 | 100 | Q&A Forum | Science & Tech. | 76.298659 | 736 |
Oceanic and Atmospheric Administration's (NOAA) most
of the Climate Report,
released on September 8, claims that the summer of 2010 was the
summer on record for the United States.
NOAA has been conducting the State
of the Climate Report since
1895, taking factors into account such as storm patterns,
precipitation and t... | <urn:uuid:b37d3b04-d136-4010-ad58-68671b2cc3fc> | 3.296875 | 424 | News Article | Science & Tech. | 39.223957 | 737 |
Full Lab Manual
Introduction & Goals
Chemistry & Background
In Your Write-up
In this two-week experiment, you will learn how to use an ion-exchange column and how to carry out an acid-base titration using an indicator. You will then apply these skills to determine the total concentration of cations in a sample of seawa... | <urn:uuid:fe8bd937-b24a-4a54-bb26-43a48a944a00> | 3.453125 | 178 | Tutorial | Science & Tech. | 52.824545 | 738 |
Zombie Fungus Rears Its Ugly Head
Photograph courtesy David Hughes
A stalk of the newfound fungus species Ophiocordyceps camponoti-balzani, grows out of a "zombie" ant's head in a Brazilian rain forest.
Originally thought to be a single species, called Ophiocordyceps unilateralis, the fungus is actually four distinct s... | <urn:uuid:b8333d3b-fa01-4ee8-bea4-92597bdaaf27> | 3.375 | 299 | News Article | Science & Tech. | 34.781555 | 739 |
Graph the Asymptote of a Tangent Function
An asymptote is a line that helps give direction to a graph of a trigonometry function. This line isn’t part of the function’s graph; rather, it helps determine the shape of the curve by showing where the curve tends toward being a straight line — somewhere out there. Asymptote... | <urn:uuid:8dec08bf-06f6-42d9-b382-8778f2fa5ff3> | 4.1875 | 715 | Tutorial | Science & Tech. | 51.931447 | 740 |
Rhenium is a rare, silvery-white metallic element. Its atomic number is 75 and its symbol is Re. Rhenium was discovered in 1925 by a team of German scientists named Walter Noddack, Ida Tacke-Noddack, and Otto Berg. They discovered rhenium as a trace element in platinum ores and the mineral columbite. It is very dense. ... | <urn:uuid:c664e83e-de9f-4793-8ec6-412b4f0d26e6> | 4.21875 | 1,404 | Knowledge Article | Science & Tech. | 37.044087 | 741 |
Earth Observing Laboratory (EOL) Field Deployments
EOL supports the observing needs of research programs in the following categories:
Become a fan on
Watch us on
Follow us on
- Climate Science
- Atmospheric Chemistry
- Atmospheric Physics
- Atmospheric Dynamics
Earth science, or geoscience, is an all encompassing term ... | <urn:uuid:5825321d-ea34-4af4-9788-29b027baba9f> | 3.109375 | 431 | About (Org.) | Science & Tech. | 5.048014 | 742 |
This modules contains the interface to the heart process. heart sends periodic heartbeats to an external port program, which is also named heart. The purpose of the heart port program is to check that the Erlang runtime system it is supervising is still running. If the port program has not received any heartbeats withi... | <urn:uuid:79083817-8ee2-43d4-a20c-07d11ac9c2c3> | 2.71875 | 635 | Documentation | Software Dev. | 50.791185 | 743 |
Interrupt the execution of an expression and allow the inspection of the environment where
browser was called from.
browser(text = "", condition = NULL, expr = TRUE, skipCalls = 0L)
- a text string that can be retrieved once the browser is invoked.
- a condition that can be retrieved once the browser is invoked.
- An e... | <urn:uuid:a0f6a31d-26d9-465a-85af-fcef7ca88935> | 3.84375 | 690 | Documentation | Software Dev. | 58.462505 | 744 |
The following HTML text is provided to enhance online
readability. Many aspects of typography translate only awkwardly to HTML.
Please use the page image
as the authoritative form to ensure accuracy.
Engineering and Environmental Challenges: Technical Symposium on Earth Systems Engineering
The term Lupang Pangako means... | <urn:uuid:7084b5bd-239a-410e-b73d-f1d0e7c57a3d> | 3.453125 | 672 | Truncated | Science & Tech. | 26.027676 | 745 |
The Plasma Spray – Physical Vapor Deposition (PS-PVD) rig at NASA's Glenn Research Center uses new technology to create super thin ceramic coatings. Here, Bryan Harder, the lead for the PS-PVD, installs a sample in the rig. Image Credit: NASA
Turbines, or rotary engines that create power, have a multitude of uses. They... | <urn:uuid:f1431e61-97ca-4d5d-8075-51f535c02fe1> | 4.15625 | 1,834 | Knowledge Article | Science & Tech. | 41.229169 | 746 |
Scientists have kept a close watch on the dazzling northern lights on Earth and other planets in our solar system, but now they have the chance to explore the auroras of alien planets orbiting distant stars, a new study suggests.
Auroras on Earth occur when charged particles from the sun are funneled to the planet's po... | <urn:uuid:95023968-accd-423e-8dc1-c2cdb09db880> | 3.734375 | 542 | News Article | Science & Tech. | 42.561272 | 747 |
initdb creates a new PostgreSQL database cluster (or database system). A database cluster is a collection of databases that are managed by a single server instance.
Creating a database system consists of creating the directories in which the database data will live, generating the shared catalog tables (tables that bel... | <urn:uuid:36d169ba-1580-4254-8473-ddb7aa3f534b> | 3.109375 | 866 | Documentation | Software Dev. | 35.48102 | 748 |
by Michael Mann and Gavin Schmidt
On this site we emphasize conclusions that are supported by “peer-reviewed” climate research. That is, research that has been published by one or more scientists in a scholarly scientific journal after review by one or more experts in the scientists’ same field (‘peers’) for accuracy a... | <urn:uuid:e9441bbe-9143-46a0-a90b-44b8bb712b75> | 2.828125 | 4,120 | Nonfiction Writing | Science & Tech. | 46.781773 | 749 |
CR-39 is transparent in visible spectrum and is almost completely opaque in the ultraviolet range. It has high abrasion resistance, in fact the highest abrasion/scratch resistance of any uncoated optical plastic. CR-39 is about half the weight of glass and index of refraction only slightly lower than that of crown glas... | <urn:uuid:7294914f-5629-4204-9346-748aee0f98cf> | 2.9375 | 314 | Knowledge Article | Science & Tech. | 45.809195 | 750 |
Termites' enzyme anomaly
26 March 2007
Japanese researchers have discovered a previously unknown method used by termites to digest cellulose. The discovery offers a novel source of enzymes to assist in the production of biofuels, they suggest.
Primitive groups of termites break down the normally indigestible cellulose ... | <urn:uuid:3e9db914-f55b-4cb0-95f9-a3c24eb0a813> | 3.1875 | 615 | News Article | Science & Tech. | 27.03829 | 751 |
The Voyager 1 has found its way into the far reaches of space, specifically to the edge beyond which scientists believe lies interstellar space. This area is within our solar bubble, and is referred to as a “magnetic highway for charged particles.” The findings were detailed earlier today at the American Geophysical Un... | <urn:uuid:72d41de0-6f22-4bce-a5fe-c004418d8494> | 3.328125 | 389 | News Article | Science & Tech. | 50.295576 | 752 |
Gone are the days when Fred Haise, of the Apollo 13 crew, could remark on how his urine looked as if a golden string of glittering stars as they passed out of the evacuation chamber of the space capsule in which he’d just relieved himself. Or at least gone are the days when Bill Paxton in the character of Haise could s... | <urn:uuid:623fbf29-1a7e-4207-b1a5-60e0c0a190ee> | 3.09375 | 629 | Personal Blog | Science & Tech. | 46.969385 | 753 |
Hydroinformatics is the rapidly developing field in which information technology is applied to address water-related issues such as flood estimation and rainfall-runoff modeling. This book is a thorough overview of all the latest developments in this increasingly vital discipline.
Hydroinformatics is an emerging subjec... | <urn:uuid:c0a7683b-c6b4-4bb2-88f5-924ec7d772de> | 2.515625 | 268 | Product Page | Science & Tech. | -12.92008 | 754 |
Even though lead usage has declined due to environmental awareness and regulation, several human sources of lead continue to affect birds. Hunting ammunition and fishing gear are ingested by the birds, with toxic effects.
Homepage for the research on occurrence, movement, flux, fate, and effects of agricultural chemica... | <urn:uuid:dd2be1c2-1006-4338-8f37-7a45837fbcfa> | 3.09375 | 224 | Content Listing | Science & Tech. | 12.491013 | 755 |
Picture of red tide taken from the NOAA Research Vessel Ron Brown
Click on image for full size
Courtesy of NOAA
Robots Watch out for Poisonous Plankton!
News story originally written on January 30, 2003
Tiny plankton that live in the sea may look harmless but certain types are able to kill fish, poison seafood and even... | <urn:uuid:8d7ea1a9-b1b5-446c-9ad6-218523c3a391> | 3.3125 | 692 | Content Listing | Science & Tech. | 55.800592 | 756 |
The basic forces in nature
Contemporary Physics Education Project
The interactions in the Universe are governed by four forces (strong, weak, electromagnetic and gravitational).
Physicists are trying to find one theory that would describe all
the forces in nature as a single law.
So far they have succeeded in producing... | <urn:uuid:f6b8e300-5420-4e46-9c29-9b2d695a94b5> | 3.484375 | 475 | Content Listing | Science & Tech. | 45.407259 | 757 |
First we have the monarch
butterflies. These incredible creatures spend their summer
days in the northern parts and then migrate (leaving for another
place) to the south for the winter. They travel thousands of
miles - some almost 2900 km from Canada to Mexico. Just
looking at a map, you can see how far Canada is from ... | <urn:uuid:dbcddb3e-9989-4206-871b-4ac752667ccb> | 3.65625 | 381 | Personal Blog | Science & Tech. | 61.48327 | 758 |
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|* [[Ajax App]] Create a rich application in a modern web browser.||* [[Ajax Ap... | <urn:uuid:d4fe2988-7fed-4572-bf1f-b9a2071aed13> | 2.734375 | 1,880 | Structured Data | Software Dev. | 34.996801 | 759 |
Welcome to http:/www.handsonuniverse.org/activities/Explorations/tactile-moonphases/
Try this instead: Link to alternate page with thumbnails linked to larger images.
SEE Project. http://analyzer.depaul.edu/SEE_Project/ These images are set for high contrast that suits the needs of individuals who are blind and visuall... | <urn:uuid:4887fdb1-88ee-4e89-94b6-35a801b59d0a> | 2.921875 | 350 | Tutorial | Science & Tech. | 54.619713 | 760 |
This advice changed my view of the world. Not only did I realize that being a teenager with a Y-chromosome can't be easy either, it also explained why my male classmates were suddenly developing interests in things like Special Relativity or Scanning Tunnel Microscopes (Nobel Prize '86). It made also sense they were us... | <urn:uuid:a3a65a4a-b5d3-41fd-bd68-47cb1070e5fa> | 2.53125 | 1,259 | Personal Blog | Science & Tech. | 35.772112 | 761 |
- freezing a small piece of leaf tissue in liquid nitrogen (-196 degrees C !) and grinding it as finely as possible.
- adding a detergent to release the DNA from the cells of the leaf tissue.
- adding chloroform. The detergent and chloroform do not mix (like oil and water), but proteins and other things we do not want ... | <urn:uuid:fe6fe460-9092-465a-84fb-171f676ce368> | 3.296875 | 467 | Personal Blog | Science & Tech. | 58.46689 | 762 |
On New Year’s day, Comet Tuttle will be closest to the Earth, a mere 25 million miles away, and also at its brightest. The comet will just be visible to the unaided eye, so you will need to be observing from a very dark site.
A gallery of images, and sky maps of when and where to look, can be found at SpaceWeather.com.... | <urn:uuid:ad4b71d1-d528-4474-b6b5-5e55a81c8aed> | 3.59375 | 757 | Personal Blog | Science & Tech. | 64.333113 | 763 |
following INSERT INTO statement:
INSERT INTO TABLE2 SELECT * FROM TABLE1
Now suppose you do not want to copy all the rows, but only those rows that meet a specific criteria. Say you only want to copy those rows where COL1 is equal to "A." To do this you would just modify the above code to look like this:
INSERT INTO TA... | <urn:uuid:ba2bdb2d-713f-4c58-931c-9526b5907a25> | 2.59375 | 205 | Q&A Forum | Software Dev. | 38.620079 | 764 |
Chemical Principles/Will It React? An Introduction to Chemical Equilibrium
And so, nothing that to our world appears,
Perishes completely, for nature ever
Upbuilds one thing from another's ruin;
Suffering nothing yet to come to birth
But by another's death.
Lucretius (95-55 B.C.)
The main question asked in Chapter 2 wa... | <urn:uuid:0380ba0a-eb55-47d7-9ade-aefc9151e100> | 4.25 | 9,948 | Knowledge Article | Science & Tech. | 47.625577 | 765 |
Splash (fluid mechanics)
In fluid mechanics, a splash is a sudden disturbance to the otherwise quiescent free surface of a liquid (usually water). The disturbance is typically caused by a solid object suddenly hitting the surface, although splashes can occur in which moving liquid supplies the energy. This use of the w... | <urn:uuid:4c6631d4-811f-4f47-be0c-a0d12013f51d> | 3.890625 | 383 | Knowledge Article | Science & Tech. | 46.962959 | 766 |
your.data <- data.frame(Symbol = c("IDEA","PFC","RPL","SOBHA"))
new.variable <- as.vector(your.data$Symbol) # this will create a character vector
VitoshKa suggested to use the following code.
new.variable.v <- your.data$Symbol # this will retain the factor nature of the vector
What you want depends on what you need. If... | <urn:uuid:06bc238c-6c4d-4ceb-9868-86abe7bfa5ea> | 2.578125 | 142 | Q&A Forum | Software Dev. | 69.892273 | 767 |
Fungi use spores to survive and spread to new sources of food.
Spores are not seeds. A seed contains a small form of a plant, plus some
food to help it get started, wrapped in a hard shell. A seed is made of
Most spores are single cells protected by a cell wall. Some spores are made of several cells, but the largest sp... | <urn:uuid:8f083ebf-dfb3-490d-99d6-2e6459a84c58> | 3.78125 | 174 | Knowledge Article | Science & Tech. | 70.042138 | 768 |
Also, it was also a place of owners to release fishes and other animals 'back to their nature'. Some of these released animals were not native in our region. Over time, a community of both native and invasive species is created within the longkang, eventually forming a longkang habitat.........
Recently, while walking ... | <urn:uuid:3c283a33-37c2-461a-849e-f638a2408d32> | 2.84375 | 614 | Personal Blog | Science & Tech. | 51.700766 | 769 |
We got hit by one 1,200 years ago.
It came from two colliding Neutron Stars from a few thousand light years away and scientists were just now able to pick it up because of the existence of carbon-14 in tree rings.
What did it do around the year 775 AD? Pretty much nothing. The estimate two-second blast had really zero ... | <urn:uuid:b7693f17-084a-4de8-97c7-e3b5d8861d95> | 3.375 | 286 | Personal Blog | Science & Tech. | 67.524745 | 770 |
Wed July 25, 2012
Massive Ice Melt In Greenland Worries Scientists
Originally published on Wed July 25, 2012 2:53 pm
A pair of NASA satellite images taken just four days apart tells a potentially worrying story of melting ice in the polar summer.
The first, snapped from orbit on July 8, shows about 40 percent of the Gr... | <urn:uuid:bd137a12-1c9d-4e02-b3d4-ebdf7b88e2b2> | 3.65625 | 543 | News Article | Science & Tech. | 49.623293 | 771 |
Provided by: libacl1-dev_2.2.49-2_i386
acl_from_text - create an ACL from text
Linux Access Control Lists library (libacl, -lacl).
acl_from_text(const char *buf_p);
The acl_from_text() function converts the text form of the ACL referred
to by buf_p into the internal form of an ACL and returns a pointer to the
working s... | <urn:uuid:03a84388-95b2-4fa4-bbe5-c06456a6ef6e> | 2.609375 | 401 | Documentation | Software Dev. | 55.928397 | 772 |
Constructing an Open Box: An open box with a square base is requried to have a volume of 10 cubic feet.
a) Express the amount A of material used to make such a box as a function of the length x of a side of the square base. MY answer: S=x^2 + 4x(10/x^2)
b)How much material is required for a base 1 foot by 1 foot?
c)How... | <urn:uuid:2d56224e-e6b6-4dad-bb65-a20c6e83e07e> | 3.578125 | 140 | Q&A Forum | Science & Tech. | 96.726656 | 773 |
Martin Harwit has argued that we cannot have made more than ten per cent of the crucial discoveries in Astronomy. He uses what John Barrow aptly calls `the proof-readers argument'. If two independent readers look at a manuscript then it is possible to estimate, by comparing their different results, how many errors the... | <urn:uuid:d9323dd8-b6ab-4284-9ad8-2d96d4a50574> | 3.5 | 497 | Academic Writing | Science & Tech. | 52.79938 | 774 |
|Annu. Rev. Astron. Astrophys. 1991. 29:
Copyright © 1991 by . All rights reserved
Several major themes have emerged from the preceding discussion:
|1.||In most or all galaxies, globular clusters are distinctly more metal-poor, by [Fe/H] ~ -0.5, than the spheroid-population field stars.|
|2.||Both the average and range... | <urn:uuid:ea01d3a4-98c3-4dcc-8f00-1451785f0e3d> | 2.671875 | 1,386 | Academic Writing | Science & Tech. | 35.371988 | 775 |
- Dense and accessible patches of prey, as opposed to just more food options, is better for marine animals.
- How different species are able to determine where the best patches of food sources are located is uncertain.
Marine animal populations thrive when presented with dense and accessible patches of prey, as opposed... | <urn:uuid:fef69cb6-b245-4ba4-af7e-f0e9cf2166f9> | 3.96875 | 567 | News Article | Science & Tech. | 44.05315 | 776 |
Liquid crystals, the state of matter that makes possible the flat screen technology now commonly used in televisions and computers, may have some new technological tricks in store.
Writing today (May 3, 2012) in the journal Nature, an international team of researchers led by University of Wisconsin-Madison Professor of... | <urn:uuid:725cafcd-e957-4ce9-ab40-14fa529641a6> | 3.765625 | 733 | News Article | Science & Tech. | 24.121142 | 777 |
A constant shower of subatomic particles rains down from space. A hundred years ago, this "cosmic radiation" was discovered by the Austrian physicist Victor Franz Hess. Among other things, the discovery laid the foundation for a whole new field of research: high energy physics - which recently gave us, for instance, th... | <urn:uuid:7e267347-4bdc-4c2c-ae17-bf5256f4a9aa> | 3.625 | 1,176 | News Article | Science & Tech. | 32.882184 | 778 |
New A team of researchers including scientists from the University of Florida has shown insect colonies follow some of the same biological "rules" as individuals, a finding that suggests insect societies operate like a single "superorganism" in terms of their physiology and life cycle.
For more than a century, biologis... | <urn:uuid:75fa06dd-7dd0-4863-a9dc-3f9b196d29c1> | 3.328125 | 661 | News Article | Science & Tech. | 18.434939 | 779 |
There are two different questions at work here, that you've kind of mashed together. The first question is "What is the speed at which a change in the electric field propagates?" The answer to that is the speed of light. In QED terms, the electromagnetic interaction that we see as the electric field is mediated by phot... | <urn:uuid:49279033-9e98-43e4-ba87-afe02bc68b49> | 3.515625 | 558 | Q&A Forum | Science & Tech. | 35.886967 | 780 |
In Jena, Graph is an interface. It abstracts anything that looks like RDF - storage options, inference, other legacy data sources.
The main operations are
addition, there are a number of getters to access handlers of various features
(query, statistics, reification, bulk update, event manager) .
Having handlers, rather... | <urn:uuid:4357bba8-8f33-427a-854e-0afa0f5e1dea> | 2.765625 | 909 | Personal Blog | Software Dev. | 41.344553 | 781 |
Text::UnicodeBox::Text - Objects to describe text rendering
This module is part of the low level interface to Text::UnicodeBox; you probably don't need to use it directly.
The string representation of the text.
How many characters wide the text represents when rendered on the screen.
The following methods are exportabl... | <urn:uuid:d2d14240-d7e4-41a9-a9a0-1d4a9f3f76ad> | 3.234375 | 474 | Documentation | Software Dev. | 59.493246 | 782 |
Once the Sample Return Capsule is
recovered at the Utah Test and Training Range (UTTR),
its contents will be placed in the capable hands of
the Stardust Curation Team - who are based at the Johnson
Space Center (JSC).
This team will then go about the business of carefully
transporting the aerogel containing grains from... | <urn:uuid:972956fc-e530-4def-be54-32fbac3a54c7> | 2.859375 | 318 | Knowledge Article | Science & Tech. | 29.633385 | 783 |
News > Scientists reconstruct Red Sea parting
Researchers at the US National Center for Atmospheric Research (NCAR) have produced a computer simulation that demonstrates how the parting of the Red Sea described in the Book of Exodus could have been caused by strong winds.
The study, which is part of a larger project lo... | <urn:uuid:61945547-f2cd-4b80-b43e-e7d82c52b051> | 4.09375 | 264 | News Article | Science & Tech. | 36.408533 | 784 |
Texas skunks risk life and limb during mating season.
By Sheryl Smith-Rodgers
Alas, pity the poor skunk. Like snakes, spiders and vultures, this much-maligned creature receives little positive publicity and has next to no admirers. To top off its dismal — and foul-smelling — reputation, a skunk’s love life is rife with... | <urn:uuid:0b270762-a177-4b5f-aeb6-89b9b3836a67> | 2.734375 | 720 | News Article | Science & Tech. | 50.297789 | 785 |
Authors: J. Marvin Herndon
Ours is a time of unparalleled richness in astronomical observations, but understanding seems to be absent throughout broad areas of astrophysics. Among some groups of astrophysicists there appears to be measured degrees of consensus, as indicated by the prevalence of so-called "standard mode... | <urn:uuid:c5e63dcc-4dd5-4354-acf2-fbb2aaac06fc> | 2.53125 | 294 | Truncated | Science & Tech. | 22.152994 | 786 |
NOAA: Sixth Warmest February in Combined Global Surface Temperature, Fifth Warmest December-February
Last month’s combined global land and ocean surface temperature made it the sixth warmest February ever recorded. Additionally, the December 2009 – February 2010 period was the fifth warmest on record averaged for any s... | <urn:uuid:85634396-e951-4b7e-8833-e0ee3022596e> | 3.03125 | 1,176 | News Article | Science & Tech. | 54.325381 | 787 |
How is global warming responsible for the death of corals?
Submitted by: Ng Jing Yi
Global warming has increased the temperature of our tropical oceans by about a degree over the last hundred years. This has increased the chance that corals will undergo something called coral bleaching, which is where the plant-like sy... | <urn:uuid:196a1ef3-9e84-4062-a135-bb8365d2cf9d> | 3.703125 | 296 | Q&A Forum | Science & Tech. | 47.624244 | 788 |
When All Data Are Not Created Equally
T idewater areas can be difficult places to acquire consistent-quality seismic data, because different sources have to be used across exposed land surfaces than what are used across shallow-water areas.
Typically, explosives are used in shot holes in the onshore portion of a tidewa... | <urn:uuid:6a86ef07-f85d-4bed-97d1-e8313081a771> | 2.9375 | 759 | Academic Writing | Science & Tech. | 18.732304 | 789 |
Science Fair Project Encyclopedia
Very nice diagrams of refraction (with the red lines). Very good at explaining the phenomenon.
I think that a rainbow is visible only when the sun is at a low altitude- mornings and late afternoon/ evenings. Isn't there some specific angle for this? KRS 15:33, 1 Feb 2004 (UTC)
- I adde... | <urn:uuid:be7c449a-7a83-4c19-9cde-e1a313a1a2b7> | 3.28125 | 997 | Comment Section | Science & Tech. | 68.455178 | 790 |
This Month in Physics History
November 1887: Michelson and Morley report their failure to detect the luminiferous ether
Albert Abraham Michelson was born in Strelno, Germany in 1852. When he was two years old his family moved to the US, and he grew up in the rough mining towns of Murphy’s Camp, California and Virginia ... | <urn:uuid:0a58269b-cea8-4a0a-899f-17cfb5879699> | 3.8125 | 1,061 | Knowledge Article | Science & Tech. | 39.142476 | 791 |
Copyright © 2001–2008 jsd
I set up some spreadsheets to solve Laplace’s equation, with more-or-less any boundary conditions you want.
The spreadsheet becomes, essentially, a 2D cellular automaton that directly emulates the physics.
This version handles objects in a D=2 universe in rectangular coordinates. In flatland, ... | <urn:uuid:ff04d2e1-0ceb-4898-ad7a-57be53abefec> | 3.328125 | 4,562 | Tutorial | Science & Tech. | 48.512402 | 792 |
Its a very general and regular ways to use
clause with Column Name to Specifies the sort order used on columns returned in a SELECT statement.
order by columnname asc/desc
I am also using the same method but do you know we can use Column Index (Integer representing the position of column name) instead of specifying the... | <urn:uuid:61309e61-d2c1-4fdb-8f00-40270a95b3e6> | 2.640625 | 329 | Q&A Forum | Software Dev. | 28.568846 | 793 |
Histogram of the raw rainfall (mm) amount for running 3-month periods in chronological
order from 1955 through 1996. The seasonal cycle of the quartile boundaries (25 %ile: lower light line; 50 %ile [i.e., median]: dark line; and 75 %ile:
upper light line) are plotted with the actual rainfall amounts for the given peri... | <urn:uuid:54416580-72fc-46d4-8c33-021e084cae99> | 2.703125 | 181 | Structured Data | Science & Tech. | 68.527735 | 794 |
Common Lisp the Language, 2nd Edition
Several kinds of numbers are defined in Common Lisp. They are divided into integers; ratios; floating-point numbers, with names provided for up to four different floating-point representations; and complex numbers.
X3J13 voted in March 1989 (REAL-NUMBER-TYPE) to add the type real.
... | <urn:uuid:bcd01b03-abb2-4458-a8b2-0122562fb6ac> | 3.828125 | 283 | Documentation | Software Dev. | 36.567112 | 795 |
Anti de-Sitter space
Bubbles, filaments, voids and sheets
Condensed matter system
Cosmic Microwave Background
Deep field survey
Degrees of freedom
Grand unification theory
Heisenberg uncertainty principle
Hubble's law and constant
Intercommuting and loop production
Laws of thermodynamics
Nematic liquid crystal
Quantum ... | <urn:uuid:4f70319b-344c-4f28-8b53-f7830cc63f5d> | 3.015625 | 16,895 | Structured Data | Science & Tech. | 37.878074 | 796 |
This has proven to be a bad week for NASA rovers patrolling Mars. NASA has several rovers on the surface of Mars performing various missions including looking for water and existence of ice on the red planet.
Yesterday, NASA announced that it had lost communications with the Phoenix lander and had no expectations of th... | <urn:uuid:76d092db-891e-4ce6-9b67-f8355bd11d53> | 2.9375 | 340 | News Article | Science & Tech. | 50.194631 | 797 |
Induced Seismicity Potential in Energy Technologies (2012)Board on Earth Sciences and Resources
Each report is produced by a committee of experts selected by the Academy to address a particular statement of task and is subject to a rigorous, independent peer review; while the reports represent views of the committee, t... | <urn:uuid:d429ec11-f447-4736-a64e-74d9f35f7869> | 3 | 1,158 | Academic Writing | Science & Tech. | 12.675374 | 798 |
2D games using Silverlight - Collision detection implementation
This article shows how to implement collision detection in a Microsoft Silverlight game application. This is the second article in a series which will show how to create a complete working game (a clone of the classic Arkanoid game).
The first article in t... | <urn:uuid:69dff074-0af7-434b-b25d-65aff6b83e6c> | 2.765625 | 1,110 | Documentation | Software Dev. | 28.059948 | 799 |