text large_stringlengths 148 17k | id large_stringlengths 47 47 | score float64 2.69 5.31 | tokens int64 36 7.79k | format large_stringclasses 13
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Pollutants in the atmosphere mix with water in the air to form acid rain. Sulphur dioxide (SO2) and nitrogen oxides (NOx) are the two main pollutants that form acid rain. SO2 reacts with water in the air to form sulphurous acid (H2SO3), and then with oxygen to form sulphuric acid (H2SO4). NOx reacts with water to form ... | <urn:uuid:bd0eb26c-a80a-46e2-9be8-e19c135d387b> | 3.71875 | 508 | Knowledge Article | Science & Tech. | 36.952461 |
Credit: NASA/UMass/D.Wang et al.
Midtown of the Milky Way
Bright lights, big galaxy. The Chandra X-ray Observatory has
recently obtained a detailed
color mosaic of the center of the Milky Way Galaxy. Bright points of
light show hot compact objects bathed in a swirling glow of hot gas clouds.
The hot gas may be produced... | <urn:uuid:202bcbea-3cc7-47f2-ac48-685a8c95d4f8> | 3.0625 | 235 | Knowledge Article | Science & Tech. | 62.646023 |
This problem investigates one connection between the Golden Ratio and the Fibonacci Sequence.
The Fibonacci Sequence 1, 1, 2, 3, 5, 8, 13, 21, . . . begins with F(1) = 1, F(2) = 1 and nth term, n > 2 is denoted by
F(n) = F(n-1) + F(n-2).
Create a Spreadsheet to generate the Fibonacci Sequence.
See the Sublime Triangle ... | <urn:uuid:b215832a-971d-48dc-bf23-c095b679dcac> | 2.703125 | 212 | Tutorial | Science & Tech. | 65.025652 |
Someday, explorers on the planet Mars might use special clocks --
with forty extra minutes per day -- to keep track of the time.
Friday, April 2, 1999DB: This is Earth and Sky for Friday,
April 2. Patrick Milo of Orleans, Ontario, writes, "How will
astronauts tell time during missions on Mars?"
JB: Shuttle astronauts c... | <urn:uuid:4f884d52-f959-4f22-a6dd-b160ea3adf4f> | 3.53125 | 402 | Comment Section | Science & Tech. | 63.45884 |
Tsunami - 5-year Anniversary Movie
NOAA, in partnership with the National Tsunami Hazard Mitigation Program (NTHMP), has produced "Tsunami", a new Science On a Sphere® (SOS) presentation to commemorate the 5th anniversary of the devastating 2004 Indian Ocean Tsunami. The narrated production uses global datasets, graphi... | <urn:uuid:c7dfd7f0-59e1-48f8-8de0-b54c6a36647e> | 3.109375 | 237 | Knowledge Article | Science & Tech. | 20.251682 |
A type of humidity that considers the mass of water vapor present per unit volume of space. Also considered as the density of the water vapor. It is usually expressed in grams per cubic meter.
ABSOLUTE INSTABILITYinstability »
When the lapse rate of a column of air is greater than the dry adiabatic lapse rate. The term... | <urn:uuid:998359c4-178a-42cc-82b1-e305198fed31> | 3.609375 | 2,894 | Structured Data | Science & Tech. | 39.327665 |
The simplest definition of biotechnology is "applied biology." The application of biological knowledge and techniques to develop products. It may be further defined as the use of living organisms to make a product or run a process. By this definition, the classic techniques used for plant and animal breeding, fermentat... | <urn:uuid:99970b05-485b-4020-80dd-2ca012e11bae> | 3.25 | 156 | Knowledge Article | Science & Tech. | 25.098015 |
|General Information||Taxonomy and identification||General biology||Habitat preferences and distribution||Reproduction and longevity||Sensitivity||Importance|
Image Keith Hiscock - Clavelina lepadiformis. Image width ca 5 cm.
Image copyright information
Clavelina lepadiformis is not listed under any importance categori... | <urn:uuid:0f6375c4-e46b-40a5-a595-c09d44ef16ae> | 2.96875 | 534 | Knowledge Article | Science & Tech. | 35.001343 |
July 29th, 2008
Phil Plait at Bad Astronomy addresses the question of why are there no green stars. It’s a nice post and brings together astronomy and biology in interesting ways, and reminds me of the posts I did a couple of months ago for a friend who’d just sold a story about life on a world orbiting an M star and w... | <urn:uuid:b8b4c467-23e5-4fda-9fea-590388a1c0dd> | 2.828125 | 176 | Personal Blog | Science & Tech. | 50.748737 |
Using PySOAPby Cameron Laird
You don't have to become expert in XML to use SOAP. For most programmers, SOAP is just a technique for distributed computing. You write a function call on your computer here, and it retrieves a result from a computation there, on a server perhaps half a world away.
With well under an hour o... | <urn:uuid:bb24852f-64c2-4b66-9b77-c16c773b1a64> | 2.796875 | 646 | Tutorial | Software Dev. | 57.240379 |
|Sep22-07, 07:07 AM||#1|
A sinusoidal wave
pls help me on this problem, thanks a lot.
A sinusoidal wave is described by y=(0.30 m)sin(0.20x-40t). Determine the wave speed.
|Sep23-07, 09:58 AM||#2|
What are the individual parts of the sin wave? 0.30 would be your amplitude, right? Break it down. What is the .20x and -40... | <urn:uuid:7a805f7a-0e7f-4bc7-9945-a74d9d8bea07> | 3.140625 | 311 | Comment Section | Science & Tech. | 86.516143 |
For decades, earthquake experts dreamed of being able to divine the time and place of the world's next disastrous shock. But by the early 1990s the behavior of quake-prone faults had proved so complex that they were forced to conclude that the planet's largest tremors are isolated, random and utterly unpredictable. Mos... | <urn:uuid:9bee1e20-6eda-4378-a565-f940023c096d> | 3.25 | 133 | Truncated | Science & Tech. | 27.260132 |
By Mark Schrope of Nature magazine
Last summer, intrepid surfers flocked to Florida's east coast to ride the pounding swells spawned by a string of offshore hurricanes. But they were not prepared for a different kind of hazard washing towards shore--an invasion of stinging moon jellyfish, some of which reached the size... | <urn:uuid:ab4a81c6-3269-41fb-94d2-3cc06eb118cc> | 3.0625 | 2,001 | Truncated | Science & Tech. | 31.904111 |
In this section, you will find useful resources of C programming language for references.
- C (programming language)
C programming language article on Wikipedia.
- The Development of the C Language
This is an interesting page about C language history development
- C FAQs
Common C FAQs published by Usenet newsgroup cove... | <urn:uuid:51370895-8009-4b22-8339-cf7dc9dc82d8> | 2.84375 | 214 | Content Listing | Software Dev. | 27.759368 |
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.
August 26, 1997
Explanation: Sometimes the sky itself seems to glow. Usually, this means you are seeing a cloud reflecting sunlight or moonlight. If... | <urn:uuid:59bb1615-40d3-419b-8d13-2607619c0729> | 3.546875 | 211 | Knowledge Article | Science & Tech. | 49.173328 |
Survey and Impact Assessment of Derelict Fish Traps in St. Thomas and St. John
Project Status: This project began in May, 2009 and was completed in December, 2012
In the waters surrounding St. Thomas and St. John, US Virgin Islands, we conducted an impact assessment of the causes and effects of lost fish traps. We eval... | <urn:uuid:6f21966d-4b7b-4ff1-94ae-bba5f5d5794e> | 3.109375 | 722 | Knowledge Article | Science & Tech. | 42.522081 |
A huge drought in the Amazon rain forest last year may have caused the release of more emissions than the U.S. is responsible for in a year.
The usually carbon-hungry forest is a major CO2 sink, but when a drought strikes and vegetation dies, all of that carbon that was stored gets released, and in the case of the majo... | <urn:uuid:86e4d07d-7a9e-4250-8748-cdbac1fcd3dd> | 3.734375 | 236 | Truncated | Science & Tech. | 65.958833 |
Thinking about it more, it may be some problem with English rather than statistics....
again, the book says
"Regardless of the shape of the population, if a sufficiently large sample of size n is taken from the population, then the sample is approximately normally distributed....
If the book is correct (it seems wrong ... | <urn:uuid:039c8188-fabe-4d63-bd1a-ae3ad1304e86> | 2.703125 | 177 | Comment Section | Science & Tech. | 47.833778 |
March 25 2008 / by futuretalk
Category: Technology Year: Beyond Rating: 11
By Dick Pelletier
In a recent report, The World in 2030, futurologist Ray Hammond predicts that over the next two to three decades, breakthroughs in computing, healthcare, communications, and robotics could mark the beginning of the end for huma... | <urn:uuid:8319ad28-5f61-4925-a41b-e1ad414ed2fe> | 2.796875 | 709 | Nonfiction Writing | Science & Tech. | 36.782609 |
During the breakfast with my colleagues, a question popped into my head:
What is the fastest method to cool a cup of coffee, if your only available instrument is a spoon?
A qualitative answer would be nice, but if we could find a mathematical model or even better make the experiment (we don't have the means here :-s) f... | <urn:uuid:7d19fe85-e424-4cad-9491-737d61630930> | 2.765625 | 345 | Q&A Forum | Science & Tech. | 52.476588 |
Today I want to set out an incredibly important example of a ring. This example (and variations) come up over and over and over again throughout mathematics.
Let’s start with an abelian group . Now consider all the linear functions from back to itself. Remember that “linear function” is just another term for “abelian g... | <urn:uuid:b8ffbe67-6d50-4c33-90e9-e12fd5498c06> | 3.40625 | 352 | Personal Blog | Science & Tech. | 52.535512 |
Before we push ahead with the Faraday field in hand, we need to properly define the Hodge star in our four-dimensional space, and we need a pseudo-Riemannian metric to do this. Before we were just using the standard , but now that we’re lumping in time we need to choose a four-dimensional metric.
And just to screw with... | <urn:uuid:96bcf47d-8285-4bf4-9b08-e9d4f19ddb41> | 3.421875 | 513 | Personal Blog | Science & Tech. | 40.320146 |
Science Fair Project Encyclopedia
- Subphylum Trilobitomorpha
- Trilobita - Trilobites (extinct)
- Subphylum Chelicerata
- Subphylum Myriapoda
- Subphylum Hexapoda
- Subphylum Crustacea
NOTE: Some classification schemes group
Myriapoda and Hexapoda into one subphylum
called Uniramia. Arthropods (Phylum Arthropoda) are ... | <urn:uuid:fb95eead-483b-4a4b-ae88-3346ae33dfd3> | 4.0625 | 1,799 | Knowledge Article | Science & Tech. | 35.886908 |
Science Fair Project Encyclopedia
Reuven Ramaty High Energy Solar Spectroscopic Imager
Reuven Ramaty High Energy Solar Spectroscopic Imager (or RHESSI) is a NASA sixth Small Explorer , launched on 5 February 2002. It's primary mission is to explore the basic physics of particle acceleration and explosive energy release... | <urn:uuid:acd348ca-e09d-482b-83b5-81a18418f165> | 3.28125 | 198 | Knowledge Article | Science & Tech. | 28.750676 |
PAPI is a portable hardware performance counter library developed by the Innovative Computing Labratory at the University of Tennessee. The goal of the PAPI project is to provide a consistent interface to the hardware performance counters found on most modern microprocessors. PAPI can be used to measure a variety of pe... | <urn:uuid:63223634-3366-425c-b9b2-2a9b1cd3c1b8> | 3.234375 | 346 | Documentation | Software Dev. | 38.441639 |
Albedos: Fractions of the total light incident on reflecting surfaces, especially celestial bodies, which are reflected back in all directions.
Amor: A family of near-Earth asteroids that have average orbital diameters in between the orbits of Earth and Mars and perihelia slightly outside Earth's orbit (1.017-1.3 astro... | <urn:uuid:018e7196-92d1-4976-8342-677b36a27c90> | 3.578125 | 1,663 | Structured Data | Science & Tech. | 38.218831 |
Try it with (S,S).
The cis isomer has one axial and one equatorial bromine. Only the axial bromine has the necessary anti arrangement for elimination.
The trans does have the diaxial conformation, albeit unstable, available to it. Now both bromines are ani to a hydrogen and can eliminate. Try drawing the structure.
The... | <urn:uuid:89f462fa-af96-444a-8f72-c922ab242a06> | 2.90625 | 536 | Tutorial | Science & Tech. | 44.110263 |
Taxonomic name: Orthotomicus erosus (Wollaston)
Common names: European bark beetle, Mediterranean pine engraver beetle
Organism type: insect
Orthotomicus erosus is an engraver beetle of the family Scolytidae. It is being introduced around the world, often due to the wood packaging material used in the shipment of texti... | <urn:uuid:fa6a43e9-15b9-4c96-a50b-7363cce8129f> | 2.90625 | 1,082 | Knowledge Article | Science & Tech. | 34.286118 |
Thu June 21, 2012
A Final Voyage, Into The Wild Black Yonder
Originally published on Wed April 10, 2013 3:16 pm
When Voyager I and II left Earth, Jimmy Carter was president, platform shoes were all the rage and moviegoers were still discovering a summer blockbuster called Star Wars.
Some 35 years later, the spacecraft ... | <urn:uuid:0fc7d792-1c17-4860-ae26-35828bab69a9> | 3.40625 | 1,178 | Truncated | Science & Tech. | 49.0806 |
May 17, 2013 — Generations of physicists have claimed that time is an illusion. But not all agree. In his book Time Reborn: From the Crisis in Physics to the Future of the Universe, theoretical physicist Lee Smolin argues that time exists—and he says time is key to understanding the evolution of the universe.
May 10, 2... | <urn:uuid:640e97c7-663b-47c4-9378-168d172874f4> | 3.109375 | 338 | Content Listing | Science & Tech. | 41.450324 |
s coal is burned, thorium-232 (232Th) and uranium-238 (238U) are released as exhaust products in coal ash. What could be done with these isotopes if they were recovered? At least one scenario is readily apparent.
Because atoms of 232Th and 238U do not split, or "fission," when bombarded with slow (thermal) neutrons, th... | <urn:uuid:440e2eef-8cd9-419b-93df-e78b36541b76> | 4.15625 | 531 | Knowledge Article | Science & Tech. | 35.834799 |
Data reported by the weather station: 82230 (LEVS)
Latitude: 40.38 | Longitude: -3.78 | Altitude: 690
Weather Madrid / Cuatro Vientos
|Main||Year 1982 climate||Select a month|
To calculate annual averages, we analyzed data of 363 days (99.45% of year).
If in the average or annual total of some data is missing informati... | <urn:uuid:09b1293a-84d0-4005-9a2e-c0a258249911> | 2.6875 | 367 | Structured Data | Science & Tech. | 71.012436 |
Wednesday, May 13, 2009
...Thus, the population effective dose equivalent from coal plants is 100 times that from nuclear plants
Radioactive material is everywhere & if you dig stuff out of the ground you are going to dig up radioactives & if you burn it you are going to have smoke with radioactivity in it.
Indeed "the... | <urn:uuid:8577f630-8440-4552-9368-0a24928d82f8> | 2.96875 | 266 | Personal Blog | Science & Tech. | 43.993608 |
MIT Technology Review: Metamaterials have already been used to guide and direct electromagnetic waves in unusual ways. Now Carles Navau of the Autonomous University of Barcelona and his colleagues have shown that a static magnetic field can be manipulated in a similar way. Their design consists of a 7-cm-long tube made... | <urn:uuid:caa91d83-f028-4af9-b260-4bb2c7bc1ec9> | 3.3125 | 1,495 | Content Listing | Science & Tech. | 29.859859 |
How many detectable alien civilizations are out there in our galaxy? In 1961, astronomer Frank Drake developed an equation to estimate the number. Now data journalist David McCandless, who gave the talk “The beauty of data visualization” at TEDGlobal 2010, has created an information graphic for the BBC calculating the ... | <urn:uuid:31bec73c-c804-42b1-903d-14e855265f40> | 3.140625 | 111 | Personal Blog | Science & Tech. | 29.8375 |
Allan Macrae has posted an interesting study at ICECAP. In the study he argues that the changes in temperature (tropospheric and surface) precede the changes in atmospheric CO2 by nine months. Thus, he says, CO2 cannot be the source of the changes in temperature, because it follows those changes.
Being a curious and ge... | <urn:uuid:37ce5eaf-8b45-4213-a5d6-2ae85fde2fc6> | 2.84375 | 1,318 | Personal Blog | Science & Tech. | 55.173388 |
A group of distinguished scientists has issued a report
confirming the theory of man-made global warming. Many of those same scientists are now holding their breath, hoping that a major research project in Antarctica will, for the first time, prove the existence of man-made global warming.
To the ordinary non-scientist... | <urn:uuid:218f4ac0-4182-4718-a361-a018758eb9d2> | 2.734375 | 426 | Personal Blog | Science & Tech. | 43.602579 |
Using Embedded Styles
In this section, we continue to construct and embellish our shopping list of cheeses in the file index.html.
Select the text for another list item, and reopen the CSS Properties dialog (via Panels, Style Properties as before, or via Alt+p then Alt+s, or by selecting the "Set CSS styles" icon sligh... | <urn:uuid:cad4f551-0681-41b9-92da-c5d4249456c8> | 2.71875 | 1,285 | Tutorial | Software Dev. | 54.579462 |
Pond Scum Prized Again
as Potential Biofuel
Algae is a broad term that refers to most of the organisms that live in water and capture energy from the sun. One kind, called cyanobacteria, is also known as blue-green algae for its color. Like other bacteria, cyanobacteria are very small, have few genes and normally make ... | <urn:uuid:9274f72f-5f7d-4985-bafa-b478d8f372b0> | 3.78125 | 1,238 | Knowledge Article | Science & Tech. | 53.447004 |
Tuesday, June 21, 2011 - 06:30 in Earth & Climate
The first map of sea-ice thickness from ESA’s CryoSat mission was revealed today at the Paris Air and Space Show. This new information is set to change our understanding of the complex relationship between ice and climate.
- CryoSat-2 exceeding expectationsThu, 1 Jul 20... | <urn:uuid:9b1eb3c4-574c-4452-8909-b3b1bb17c5e0> | 3.046875 | 189 | Content Listing | Science & Tech. | 57.778333 |
The modern interpretation of heat is, or course, somewhat different to Lavoisier's
calorific theory. Nevertheless, there is an important subset
of problems involving heat flow for which Lavoisier's approach is
These problems often crop up as examination questions.
For example: ``A clean dry copper
calorimeter contains ... | <urn:uuid:63a68981-a03a-4875-8f91-e2490621d2b5> | 3.90625 | 955 | Academic Writing | Science & Tech. | 42.92513 |
Pub. date: 2008 | Online Pub. Date: April 25, 2008 | DOI: 10.4135/9781412963893 | Print ISBN: 9781412958783 | Online ISBN: 9781412963893| Publisher:SAGE Publications, Inc.About this encyclopedia
A RESOURCE IS any item or substance that is in scarce supply and has some value. Resources are normally considered to be phys... | <urn:uuid:499540fc-1651-4b8b-8bf4-fdc37f13e8d6> | 3.21875 | 244 | Truncated | Science & Tech. | 34.969318 |
NOTE: I recommend reading Noldorin's answer first, for useful background information, and Matt's answer afterward if you want additional detail
Noldorin is right that there isn't a single event that you can look at and identify a Higgs boson. In fact, unless the theories are drastically wrong, the Higgs particle is uns... | <urn:uuid:35f378b9-55a8-4b31-b41b-2b46b7059cb1> | 2.703125 | 595 | Q&A Forum | Science & Tech. | 46.612289 |
Ultra low frequency
||0.3 to 3 kHz
Ultra low frequency (ULF) is the frequency range of electromagnetic waves between 300 hertz and 3 kilohertz. In magnetosphere science and seismology, alternative definitions are usually given, including ranges from 1 mHz to 100 Hz, 1 mHz to 1 Hz, 10 mHz to 10 Hz. Frequencies above 3 H... | <urn:uuid:c9049947-0468-4742-81c8-a155c5fe6f43> | 3.359375 | 887 | Knowledge Article | Science & Tech. | 58.628875 |
Science subject and location tags
Articles, documents and multimedia from ABC Science
Friday, 29 February 2008
Biological organisms play a surprisingly large role in how rain and snow forms, a new study shows.
Monday, 25 February 2008
An Arctic 'doomsday vault' filled with samples of the world's most important crop see... | <urn:uuid:3a330f20-ec0d-4b39-9375-ccfe8d64c4e0> | 2.78125 | 659 | Content Listing | Science & Tech. | 53.832547 |
Jumping Robots Leap Ahead
G. Meeks/Georgia Tech
When physiologists and roboticists study the process of jumping, they usually include as much of the complexity of real human or robotic legs as possible. But physicists at Georgia Tech in Atlanta took the opposite approach, using a simple model consisting of just a verti... | <urn:uuid:31caebeb-f230-47f9-a041-7f9ead48b2f7> | 4.03125 | 255 | Knowledge Article | Science & Tech. | 40.842407 |
Inspect Existing Code
Our first step was to inspect the "starting" application code to understand its intrinsic parallelism and how efficiently it used hardware resources. The following four tasks helped us better understand the structure of the application before porting it to a pair of Dual-Core Intel Xeon Processors... | <urn:uuid:5a6022d3-7c65-4302-b080-dd1ea0b4c56c> | 2.8125 | 1,747 | Documentation | Software Dev. | 31.00824 |
Scientists warn world heatwaves will intensify
20 August 2004, source edie newsroom
Heatwaves will become more severe, more intense and will last for much longer throughout Europe and North America, according to a recent study.
Gerald Meehl, one of the scientists who led the study, stated that the average heatwave coul... | <urn:uuid:94aa31a6-2718-4371-8e99-5261738428fd> | 3.296875 | 443 | Truncated | Science & Tech. | 39.31132 |
1. Object Oriented programming ... break your programming down into "classes", related to logical sets of data, and the methods that manipulate that data.
2. Focus on building the LOGICAL classes, separate from your UI.
So, don't write a dozen input hanlders doing all your math ... write a dozen input handlers calling ... | <urn:uuid:9dccdf73-5e65-467f-9d07-393269d663c2> | 3.03125 | 535 | Comment Section | Software Dev. | 71.412097 |
Example for using the extended math of the HMO series (ID #540)Analysis of the electrical energy.
The HMO series offers five sets of formulas, each of them can accept up to five equations. This allows to enter the most important mathematical analysis into these five sets of formulas so that they can be called quickly w... | <urn:uuid:ab4b4a30-4879-45f3-9367-a297b6f5362d> | 2.828125 | 430 | Tutorial | Science & Tech. | 49.412498 |
Q1. We get so much water from underground rocks. Are there natural streams flowing underground?
Not really! Groundwater moves through porous rock formations similar to the way water flows through a sponge with inter-connected pores. In nature, no space remains empty. Therefore, the pore space within the underground roc... | <urn:uuid:de4e34a8-1bed-41eb-b100-fdc021a868b2> | 3.671875 | 691 | Q&A Forum | Science & Tech. | 32.420078 |
This function uses Grid graphics to draw a diagram of a Grid layout.
grid.show.layout(l, newpage=TRUE, bg = "light grey", cell.border = "blue", cell.fill = "light blue", cell.label = TRUE, label.col = "blue", unit.col = "red", vp = NULL)
- A Grid layout object.
- A logical value indicating whether to move on to a new p... | <urn:uuid:a32cfd85-a402-4eeb-8fef-0b2e063f7737> | 3.640625 | 318 | Documentation | Software Dev. | 78.924503 |
The Lovell Telescope has joined with the 305-metre Arecibo Telescope
in Puerto Rico to take part in what is the most sensitive and
comprehensive search yet undertaken for possible radio signals
from extraterrestrial civilisations beyond our Solar System.
The 5 year research programme, project Phoenix, is led by the
pri... | <urn:uuid:ed95f5fd-7279-4681-bd5c-c8d334263657> | 3.328125 | 295 | Knowledge Article | Science & Tech. | 33.605692 |
Hubble Expansion and Speed of Galaxies
I have a question that has been gnawing at me
for sometime, and I can not find the answer on the Internet or in the
library. Please help me.
Hubble compared the distances to the velocity with which the galaxies
were speeding away, and explained that the farther away the galaxy, th... | <urn:uuid:090023e8-3ef2-49d5-8fa9-eebbcf9b851c> | 3.453125 | 624 | Q&A Forum | Science & Tech. | 52.849891 |
A supplement providing a snapshot of the latest developments in chemical biology
Anaesthetised brains under pressure
19 September 2006
What happens if you get a frog drunk and then take him scuba diving? The answer could help explain how anaesthetics work, claim scientists in the UK.
Agnieszka Wlodarczyk and colleagues... | <urn:uuid:41ecb6c2-7190-4242-9144-e109c672d859> | 3.078125 | 375 | Truncated | Science & Tech. | 48.240709 |
pictures: Marian Ørgaard and Niels Jacobsen
drawings: Line Jacobsen
Three main points in the article:
- The lower part of the kettle has a mucilage covering, interpreted as a hitherto
unnoticed food source for visiting insects.
- The cells of the inner surface of the tube and the kettle have downward pointing
trichomes... | <urn:uuid:369d0d01-283d-46d1-a57b-7f6e8274eb4a> | 2.96875 | 233 | Knowledge Article | Science & Tech. | 41.775034 |
- Large images:
- June 27, 1973 (Landsat 1 MSS; 57 meter resolution; 2.7 MB)
- July 2, 2002 (Landsat 7 ETM+; 28.5 meter resolution; 2.8 MB)
In the far North, short summers thaw only the top layer of the frozen ground. Beneath this shallow layer, the soil is permanently frozen—permafrost. The permafrost is like the ceme... | <urn:uuid:1fa1474e-7e3d-4c73-b84d-523663e66f6e> | 4.09375 | 460 | Knowledge Article | Science & Tech. | 60.474673 |
|Instrument: SMMR : Scanning Multichannel Microwave Radiometer|
Earth Remote Sensing Instruments
Instrument Class: Passive Remote Sensing
Instrument Type: Spectrometers/Radiometers
Instrument Subtype: Imaging Spectrometers/Radiometers
Related Data Sets
View all records related to this instrument
The primary purpose of ... | <urn:uuid:c68833c9-69b6-4440-b604-11477e6436f7> | 3 | 441 | Knowledge Article | Science & Tech. | 59.069222 |
A previous post addressed some issues with linear regression, “linear” meaning we’re fitting a straight line to some data. Let’s devote another post to scrutinizing the issue — so this post is all about the math, readers who aren’t that interested can rest assured we’ll get back to climate science soon.
It was mentione... | <urn:uuid:7fbb4f38-445e-4ced-beda-597f855bd542> | 2.96875 | 331 | Personal Blog | Science & Tech. | 59.145877 |
In order to separate blocks of code (like for loops, if blocks and function definitions) the compiler / interpreter needs something to tell it when a block ends. Curly braces and end statements are perfectly valid ways of providing this information for the compiler. For a human to be able to read the code indentation i... | <urn:uuid:e01b38c1-d580-459a-a2f6-65195d5bcd4d> | 3.28125 | 423 | Documentation | Software Dev. | 35.194883 |
what are magnetic beads made up??
duong at chestnut.chem.upenn.edu
Mon Feb 8 08:18:18 EST 1993
I just read an article in Science (Nov, 13, 1992). It talked about the
direct Mechanical Measurements of the elasticity of Single DNA
molecules by using magnetic beads. I am wondering that what are the
chemical functional gro... | <urn:uuid:3f70ab89-e51d-4768-9ab4-928f446d0bfd> | 3.015625 | 194 | Comment Section | Science & Tech. | 64.3375 |
Dear Saxena ji,
Thank you for inquiry.
West facing windows can be a big source of heat, first measure which you...
Why all these are not applicable to Tuticorin port or the one planned in AP or WB ?
What an eye opener! As an environmental engineer,disposal of sanitary napkins has always been a concern during waste...
d... | <urn:uuid:a014413f-e5c9-4dd8-b748-a86ea2db145d> | 3.625 | 893 | Comment Section | Science & Tech. | 38.154134 |
Geothermal Power vs. Geothermal Heating
Geothermal power & geothermal heating and cooling are not the same thing, although they are often incorrectly interchanged.
Geothermal Power = Electricity & Power Plant
Uses extreme heat/steam from miles beneath the surface to rotate a turbine that generate electricity at a power... | <urn:uuid:99adcd30-f4a5-48ce-ae9c-059182433219> | 3.328125 | 652 | Knowledge Article | Science & Tech. | 47.843643 |
The Mutant Butterflies Of Fukushima
While not quite Simpson-esque in their deformities, the mutations witnessed in butterflies near Fukushima should not be dismissed.
Researchers have discovered the Fukushima nuclear disaster has caused physiological and genetic damage to the pale grass blue butterfly (Zizeeria maha).
... | <urn:uuid:adda87f4-cbcc-4d24-855c-a78f880f936f> | 2.890625 | 426 | Personal Blog | Science & Tech. | 29.356236 |
Since Lua isn't used as much as other languages, it doesn't have a million simple tutorials for it. However, it is still a fun language to learn and useful for beginners. You can find the official Lua documentation at http://www.lua.org/docs.html
. I could write you a five hundred page book on Lua but I honestly don't ... | <urn:uuid:f9c68df3-cd45-452c-a391-ab4e72ff18a8> | 3.015625 | 204 | Q&A Forum | Software Dev. | 61.468521 |
99 questions/11 to 20
1 Problem 11
(*) Modified run-length encoding. Modify the result of problem 10 in such a way that if an element has no duplicates it is simply copied into the result list. Only elements with duplicates are transferred as (N E) lists.
Example: * (encode-modified '(a a a a b c c a a d e e e e)) ((4 ... | <urn:uuid:e8eb9163-e2f8-4feb-8698-c3818c26b715> | 3.046875 | 2,446 | Tutorial | Software Dev. | 76.4478 |
Blast-off for researching bugs in space
Dr Tony Ricco is working with Nasa putting tiny satellites into space to see how bugs develop in that atmosphere – seen as critical in eventual space travel, writes CLAIRE O’CONNELL
WHAT DO medical devices have in common with satellites that orbit the Earth? On the face of it, pe... | <urn:uuid:b2d9d637-9c5d-4328-9fff-d33fb4d24b28> | 2.765625 | 766 | Truncated | Science & Tech. | 39.551653 |
Wednesday Science Night for February 1st presents:
7:00 PM Nature – “Wolverine: Chasing The Phantom”
Its name stirs images of the savage, the untameable. Legend paints it as a solitary, bloodthirsty killer that roams the icy heart of the frozen north, taking down prey as large as moose, crushing bones to powder with it... | <urn:uuid:31848584-1e7e-4363-acbd-c5f3e6db9b44> | 2.6875 | 365 | Content Listing | Science & Tech. | 32.363416 |
The other two shuttles -- Challenger and Columbia -- did not make it back to Earth after accidents that killed their entire crews.
9. SpaceX gets to the space station, and back
No NASA shuttles flew in 2012, but a private company called SpaceX successfully sent almost 900 pounds of cargo to the international space stat... | <urn:uuid:47d65108-6ac8-46f5-96a9-4985e129bcf9> | 3.21875 | 353 | Listicle | Science & Tech. | 51.398922 |
Imagine a world where microscopic medical implants patrol our arteries, diagnosing ailments and fighting disease; where military battle-suits deflect explosions; where computer chips are no bigger than specks of dust; and where clouds of miniature space probes transmit data from the atmospheres of Mars or Titan.
Nanote... | <urn:uuid:19b290e0-7b69-4673-947d-1deff6423b0f> | 3.578125 | 1,530 | Comment Section | Science & Tech. | 36.979114 |
Ever since the discovery of buckminsterfullerene, the football-shaped molecule which contains 60 carbon atoms, chemists have been racing to make larger 'fullerenes'. However, once a new fullerene has been discovered, determining its structure is difficult. The distinctive 'hollow cage' form chosen by nature may be one ... | <urn:uuid:eb96df69-f21e-4193-845d-f69a5265859b> | 3.640625 | 218 | Truncated | Science & Tech. | 28.782679 |
Spontaneous Combustion Heat
I am curious about spontaneous combustion when oily rags are discarded improperly. What causes heat build up?
In order for something to burn (oxidize), ignition heat and oxygen are necessary. As you know, such reactions release heat. Burning may be a slow oxidation like that which occurs whe... | <urn:uuid:fc919795-899d-4199-a405-fbdd460b4797> | 3.171875 | 334 | Knowledge Article | Science & Tech. | 41.32121 |
This is called an "arithmetic series".
Each term in an arithmetic series ALWAYS has a difference of "d" between each term. Subtract any term in this sequence by the one that preceded it and the answer is always d=(I'll let you figure this one out).
If you want to calculate the actual cost of 100 apples, you need to fin... | <urn:uuid:92a2d8b4-f1d3-4af4-9a01-bfc77ad9567f> | 3.046875 | 270 | Comment Section | Science & Tech. | 66.908382 |
Following in the pad prints and rover tracks of Viking 1 and 2, Mars Pathfinder, Spirit and Opportunity, the Mars Phoenix lander became Earth’s sixth successful visitor to the surface of the Red Planet. Using a maneuver involving parachutes and rocket thrusters, the craft touched down on May 25, to the delight of NASA ... | <urn:uuid:e57ed377-b9d0-49b6-aafa-d8be70bc5e3b> | 3.296875 | 394 | Truncated | Science & Tech. | 50.884934 |
Fact sheet number: FS-2002-04-80-MSFC
These days everyone is talking about thinking “outside the box, “ but sometimes science is better done inside a box — a glovebox that is. The Microgravity Science Glovebox — a sealed container with built-in gloves — provides an enclosed work space for investigations conducted in th... | <urn:uuid:3c4ad59c-4c9c-4ddc-97be-18967316d614> | 3.921875 | 1,490 | Knowledge Article | Science & Tech. | 23.32913 |
Quantum mechanics, the branch of mathematical physics that deals with atomic and subatomic systems and their interaction with radiation in terms of observable quantities. It is an outgrowth of the concept that all forms of energy are released in discrete units or bundles called quanta.
Quantum mechanics is concerned wi... | <urn:uuid:42b539ef-6097-4753-bca0-7ce979beaa85> | 3.359375 | 734 | Knowledge Article | Science & Tech. | 30.64496 |
The story so far
In my previous post I showed how the "evolutionary rate" of Zhivotovsky, Underhill, and Feldman (2006) is inappropriate for TMRCA calculations, because:
- It is not calculated from the time depth of the MRCA, but of an earlier "Patriarch"; more importantly:
- It is an average over many simulated haplog... | <urn:uuid:9e939a64-42b2-466f-aa7f-5948628d9ccb> | 2.6875 | 1,268 | Personal Blog | Science & Tech. | 44.325345 |
Sample Analysis at Mars
Sample Analysis at Mars (SAM) is a suite of instruments on the Mars Science Laboratory Curiosity rover. The SAM instrument suite will analyze organics and gases from both atmospheric and solid samples. It was developed by the NASA Goddard Space Flight Center, the Laboratoire Inter-Universitaire ... | <urn:uuid:f9d08b6f-8490-4527-9d22-29a89ab522da> | 3.40625 | 1,020 | Knowledge Article | Science & Tech. | 57.092416 |
The Copenhagen Diagnosis
The University of New South Wales Climate Change Research Center has put together a report surveying scientific papers that have been published since the 2007 Intergovernmental Panel on Climate Change (IPCC) completed its fourth Assessment Report over three years ago.
“The Copenhagen Diagnosis:... | <urn:uuid:33f1bbd5-686b-4806-a848-f9524b62b33b> | 3.328125 | 665 | Personal Blog | Science & Tech. | 38.714349 |
New tracking and observing technologies are giving marine conservationists a fish-eye view of conditions, from overfishing to climate change, that are contributing to declining fish populations, according to a new study.
|A researcher surgically implants a tag in a bluefin tuna. |
Until recently, scientists provided fi... | <urn:uuid:f0567beb-4f2f-4d4b-ae38-edf9d64cd129> | 3.625 | 683 | Truncated | Science & Tech. | 31.706497 |
Internet Explorer 6 DOCTYPE Bug
Join the Discussion
Microsoft should be ashamed of themselves for not knowing what a DOCTYPE is.
A DOCTYPE defines the version of the HTML standards that has been followed in the coding of the HTML contained within the web page. Of course most if not all current web browsers ignore the D... | <urn:uuid:500bf413-176a-4711-b9f8-0a21efa9d001> | 2.859375 | 373 | Documentation | Software Dev. | 48.58829 |
One way to remember the multiplication table of the octonions is to use the following diagram (which I got from John Baez's online paper): if $(e_i,e_j,e_k)$ is one of the lines listed according to the cyclic order indicated in the diagram, then $e_ie_j=e_k$ and $e_je_i=-e_k$ in $\mathbb O$.
If we forget the cyclic ori... | <urn:uuid:f12ddde2-db5b-4fab-8378-ed619fd6b84d> | 2.6875 | 322 | Q&A Forum | Science & Tech. | 45.513453 |
Fields (C# Programming Guide)
For simplicity, these examples use fields that are public, but this is not recommended in practice. Fields should generally be private. Access to fields by external classes should be indirect, by means of methods, properties, or indexers. For more information, see Methods, Properties and I... | <urn:uuid:3069388c-95dd-4dbb-a3e4-27f402cb43b0> | 3.890625 | 446 | Documentation | Software Dev. | 45.561372 |
There used to be very good reasons for keeping instruction / register names short. Those reasons no longer apply, but short cryptic names are still very common in low-level programming.
Why is this? Is it just because old habits are hard to break, or are there better reasons?
- Atmel ATMEGA32U2 (2010?):
- .NET CLR inst... | <urn:uuid:e8066e7a-8242-46d6-9e61-cb28ff7d45cc> | 2.78125 | 272 | Q&A Forum | Software Dev. | 42.4325 |
Saturday, July 31
The 125-foot-tall column overlooking Astoria, Ore., is covered with scenes of the region’s exploration-rich history: Capt. Robert Gray claims the region for America in 1792, Lewis and Clark reach the Pacific in 1805, and explorers with the Pacific Fur Company arrive in 1811. Despite these textbook-wor... | <urn:uuid:3814a5e7-2bcd-4f75-a4bf-3df018bd38c1> | 3.09375 | 886 | Personal Blog | Science & Tech. | 44.045403 |
A young crater that's about nine miles (15 km) across scars the surface of Vesta, one of the largest asteroids, in this view from the Dawn spacecraft. Large boulders that were blasted out by the impact that created the crater are scattered around its rim. Dawn will depart Vesta in early September and head toward the la... | <urn:uuid:ede833b4-3351-43c0-86cb-dddbab8f2b33> | 3.71875 | 450 | Audio Transcript | Science & Tech. | 47.541429 |
Science Fair Project Encyclopedia
Death's head moth
The name Death's head hawkmoth usually refers to one of the two species (A. atropos and A. styx) of moth in the Acherontia genus. Found throughout the Middle East and the Mediterranean region, this moth is easily distinguishable by a skull-shaped pattern on its back.
... | <urn:uuid:ca9b3d96-c995-4262-8158-0a96ef0dbbe3> | 3.296875 | 269 | Knowledge Article | Science & Tech. | 52.15738 |
C. elegans is probably the most versatile nematode’s known to molecular and developmental biotechnologists. It has been in use in laboratories since 1974 and was the first multicellular organism to have its entire genome sequenced. As one of the simplest organisms with a nervous system, it is a favorite research specim... | <urn:uuid:7752558e-4638-4837-a44e-927d5e35e86b> | 3.09375 | 380 | Personal Blog | Science & Tech. | 30.132203 |
What's the weather like today? It's a question we often ask, because the weather can vary so much—and because the nature of the weather is so fundamental to our lives. But despite the variability in the weather, we assume a constancy in the climate. Weather is not the same as climate. Climate is the long-term average o... | <urn:uuid:12431c27-da62-427a-a69a-bdc7f2fa4e84> | 3.84375 | 674 | Knowledge Article | Science & Tech. | 46.852879 |
This diagram shows the presumed distance of the Oort cloud compared to the rest of the solar system
The Oort cloud (sometimes called the Ípik-Oort Cloud) is a postulated spherical cloud of comets situated about 50,000 to 100,000 AU from the Sun. This is approximately 1000 times the distance from the Sun to Pluto or rou... | <urn:uuid:9abd952c-fada-4738-aa15-6b9e84538720> | 4.15625 | 678 | Knowledge Article | Science & Tech. | 40.282903 |
In order to simulate true concurrency on a single processor system, our interpreter must allow for switching between tasks. In other words, we execute a single task for a (short) perdio of time, then switch between tasks randomly. In this way, our concurret tasks can assume an order of execution, just as tasks run on s... | <urn:uuid:25b2d9af-f84e-45d3-8ccd-0351ebfd4b23> | 3.015625 | 1,710 | Documentation | Software Dev. | 40.234622 |
cowrie or cowry (both: kouˈrē) [key], common name applied to marine gastropods belonging to the family Cypraeidae, a well-developed family of marine snails found in the tropics. Cowries are abundant in the Indian Ocean, particularly in the East Indies and the Maldive Islands. Species of cowries inhabit the waters aroun... | <urn:uuid:14338c07-2d05-426f-b5d1-cdc7489992e4> | 3.484375 | 393 | Knowledge Article | Science & Tech. | 46.316583 |
fer-de-lance (fĕrˌ-də-lănsˈ) [key], highly poisonous snake, Bothrops atrox, found in tropical South America and the West Indies. A pit viper, related to the bushmaster and the rattlesnake, it has heat-sensitive organs on the head for detecting its warm-blooded prey. Usually about 5 to 6 ft (150–180 cm) long, the fer-de... | <urn:uuid:03549c80-1920-4c59-bd17-2f4b6dbff217> | 3.453125 | 225 | Knowledge Article | Science & Tech. | 52.933333 |
Methane is formed under the absence of oxygen by natural biological and physical processes, e.g. in the sea floor. It is a much powerful green house gas than carbon dioxide.
Thanks to the activity of microorganisms this gas is inactivated, before it reaches the atmosphere and unfolds its harmful effects on Earth´s clim... | <urn:uuid:dc935003-c5d9-44c6-a370-2b046d5ad7ac> | 3.734375 | 1,438 | Content Listing | Science & Tech. | 48.428599 |
Part 13: Multiple Stars and Star Clusters
John P. Pratt
- An optical double is merely two stars that happen to be nearly on the same line of sight.
- The two stars are not physically associated in any way.
- An example is Mizar (the middle star of the three in the Big Dipper's Handle) and
- Mizar and Alcor used to be a... | <urn:uuid:55cb0d25-03bc-4b27-b2d9-bd8791574c03> | 3.703125 | 1,733 | Structured Data | Science & Tech. | 55.346886 |
Newton came up with one more law when he started thinking about the interaction of objects.
- He had already talked about what happens when there is no force (1st Law).
- He then talked about what happens when there is a force (2nd Law).
- But what happens when you have objects interacting, affecting each other?
The 3r... | <urn:uuid:bda87df7-9cb9-4e64-a08a-7d65d6fa2715> | 4.125 | 1,385 | Tutorial | Science & Tech. | 70.901482 |
Previous abstract Next abstract
The nearby K dwarf HD 98800 is remarkable for its unusual infrared excess. The radiation between 10 and 100 microns amounts to more than 10 percent of the luminosity of the star, indicating a large disc of cold dust surrounding the star. A visual companion was discovered by Innes in 1909... | <urn:uuid:28b265dd-4f9b-45d9-a5d1-34e7e7752e36> | 2.953125 | 351 | Academic Writing | Science & Tech. | 54.933139 |
Animal Species:Common Cleanerfish, Labroides dimidiatus (Valenciennes, 1839)
The Common Cleanerfish is blue to yellow above fading to white or yellow below. As its standard name suggests the species cleans larger fishes.
Blue Streak, Blue-streak Cleaner Wrasse, Bridled Beauty , Cleaner Wrasse, Common Cleaner Wrasse, Ga... | <urn:uuid:9b6adbc9-2619-4ce4-b109-65d6caf2659b> | 3.171875 | 670 | Knowledge Article | Science & Tech. | 64.772179 |
In a Swiss laboratory, a group of ten robots is competing for food. Prowling around a small arena, the machines are part of an innovative study looking at the evolution of communication, from engineers Sara Mitri and Dario Floreano and evolutionary biologist Laurent Keller.
They programmed robots with the task of findi... | <urn:uuid:969a48fc-5099-422e-bdbc-cf3876a463d7> | 3.890625 | 438 | Nonfiction Writing | Science & Tech. | 44.050489 |
May 2, 2012
Animals and plants are distributed around the world naturally.
Their individual adaptations make certain habitats ideal and others
not. Throughout history, humans have moved plants and animals to
new areas--sometimes sucessfully and at other times producing
disastrous results. In this Science Bite, Museum s... | <urn:uuid:572f29b7-fe5e-48f1-9a79-4889569a53ce> | 2.984375 | 87 | Truncated | Science & Tech. | 30.252019 |