text stringlengths 174 655k | id stringlengths 47 47 | score float64 2.52 5.25 | tokens int64 39 148k | format stringclasses 24
values | topic stringclasses 2
values | fr_ease float64 -483.68 157 | __index__ int64 0 1.48M |
|---|---|---|---|---|---|---|---|
functions cause the regular file named by
or referenced by
to be truncated to a size of precisely
If the file previously was larger than this size, the extra data is lost.
If the file previously was shorter, it is extended, and
the extended part reads as null bytes ('\0').
The file offset is not changed.
If the size ch... | <urn:uuid:d1be2a39-cbac-46ab-96e6-da3bed54f94e> | 2.96875 | 587 | Documentation | Software Dev. | 54.423924 | 2,600 |
Nitrogen in the air
Nitrogen is required by all living organisms for the synthesis of proteins, nucleic acids and other nitrogen containing compounds. The Earth’s atmosphere contains almost 80 % nitrogen gas. It cannot be used in this form by most living organisms until it has been fixed, that is reduced (combined with... | <urn:uuid:e839757b-59b5-4a54-b4ef-6a08599b64fa> | 3.515625 | 134 | Knowledge Article | Science & Tech. | 42.104405 | 2,601 |
Highly electronegative hyperhalogens will have applications in many industries
An international team of researchers has discovered a new class of highly electronegative chemical species called hyperhalogens, which use superhalogens as building blocks around a metal atom. The new chemical species may have application in... | <urn:uuid:2554ae7d-37c5-41f0-85c3-dcc278729679> | 3.390625 | 1,156 | News Article | Science & Tech. | 26.174992 | 2,602 |
Burrowing inside an asteroid whose orbit carries it past both the Earth and Mars could protect astronauts from radiation on their way to the Red Planet. The idea is being investigated with funding from NASA.
Outside the protective bubble of the Earth's magnetic field, charged particles from the Sun and from beyond our ... | <urn:uuid:19be1064-97bd-4681-99d7-a206f81da93f> | 4.375 | 924 | Truncated | Science & Tech. | 44.07586 | 2,603 |
THE solar system may be older than we think it is. This claim is based on new studies of rubidium in massive stars.
One way to work out the age of the solar system is to use radioactive dating of the heavy element rubidium in meteorites, assuming that the meteorites started out with the same level of the metal as the e... | <urn:uuid:0e8efd9d-22df-45ef-b074-bd5c0496d4bb> | 4.125 | 216 | Truncated | Science & Tech. | 53.582016 | 2,604 |
Sandrine Ceurstemont, video producer
A mysterious ancient specimen at the Berlin Natural History Museum has finally been identified thanks to the latest computer imaging technology (see video above). The spider, which was trapped in amber 49 million years ago, can barely be seen under a microscope since the hardened re... | <urn:uuid:21a93ddd-662a-4114-87c2-7fdc038a3970> | 3.984375 | 328 | News Article | Science & Tech. | 29.642784 | 2,605 |
Name: Sam J.
I am tring to find out a good diamagnetic material for
magnetic levatation. I know that Bismuth is the best diamagnetic
material. But with respect to Carbon-Graphite. I have seen experaments
using this and it works well. I was wondering if you could use just
carbon or just graphite, and what would work bet... | <urn:uuid:b4cb0dd8-3490-4794-a65b-b548fdc96460> | 2.671875 | 491 | Q&A Forum | Science & Tech. | 59.46837 | 2,606 |
They're calling it a "rogue earthquake."
On April 11 of this year, one of the 10 biggest earthquakes ever recorded struck off the coast of Indonesia. It was felt from Bangladesh to Australia.
You may not have even heard of this magnitude 8.6 quake. It barely made the news in the U.S. because it did very little damage. ... | <urn:uuid:324f271e-5ce0-4614-a6c2-58d0ec500d66> | 3.96875 | 761 | News Article | Science & Tech. | 55.518718 | 2,607 |
Activity 4: Transpiration
SUCK IT UP! A STUDY OF TRANSPIRATION
Transpiration and water movement through plants play an important role in the hydrologic cycle. The activity shows how transpiration relates to weather conditions.
Instructional Method: Experiment
Goal: To show students how plants perform a vital part in th... | <urn:uuid:7c8ecf45-6e72-4373-b840-05f0f5d0ff10> | 3.796875 | 666 | Tutorial | Science & Tech. | 56.184604 | 2,608 |
Page 2 of 4
Cetacealab sits at the convergence of numerous waterways, making it an ideal habitat for a wide diversity of species. Approximately 252 humpbacks return each year to feed in the nutrient-rich waters of Caamano Sound after their long migration from Hawaii or Baja California, orcas pass through as they follow... | <urn:uuid:6046e755-0df0-4fde-b4ff-71e03845ba40> | 3.3125 | 638 | News Article | Science & Tech. | 55.339879 | 2,609 |
New details are emerging on how the melting poles could raise ocean heights [see "The Unquiet Ice"; SciAm, February 2008]. Researchers at the University of Toronto and Oregon State University suggest that the rise could be uneven around the world. They examined the West Antarctic ice sheet, which contains enough ground... | <urn:uuid:1a2c98e0-f01e-45e4-b0cf-608f1725efe1> | 3.328125 | 668 | News Article | Science & Tech. | 40.327348 | 2,610 |
By the end of this day, somewhere in the visible universe a new black hole will have formed. Gamma-ray bursts (GRBs), the most distant and powerful explosions known, are likely the birth cries of these new black holes.
NASA's Swift mission is dedicated to studying the gamma-ray burst/black hole connection. The Swift sp... | <urn:uuid:5d33931f-c4ea-42a2-96f2-a02dd09838fc> | 3.75 | 849 | News Article | Science & Tech. | 37.897925 | 2,611 |
So, believe it or not, we have our first named storm of the year, and we still have a few weeks before the official start of tropical season.
Sub tropical storm Andrea was named yesterday (wed. may 9) afternoon, and has since been downgraded to a tropical depression. It is very interesting that they decided to name thi... | <urn:uuid:740932b0-025d-4d9a-a28f-62be37da58bc> | 3.328125 | 241 | Comment Section | Science & Tech. | 50.171031 | 2,612 |
Study alters Greenland glacier melt view
Leeds, England (UPI) Jan 26, 2011
Warm summer temperatures may not melt the Greenland ice sheet as fast as previously feared and may actually slow the flow of glaciers, British researchers say.
Scientists at the University of Leeds say they believe increased melting in warmer ye... | <urn:uuid:91a92a82-16a4-44ed-b579-77d882ca1d83> | 3.609375 | 513 | Truncated | Science & Tech. | 41.63381 | 2,613 |
MSYNCSection: Linux Programmer's Manual (2)
Index Return to Main Contents
NAMEmsync - synchronize a file with a memory map
DESCRIPTIONmsync() flushes changes made to the in-core copy of a file that was mapped into memory using mmap(2) back to disk. Without use of this call there is no guarantee that changes are written... | <urn:uuid:b08500ca-0756-47db-9541-dff77bf8d4d7> | 2.78125 | 433 | Documentation | Software Dev. | 55.864624 | 2,614 |
Data reported by the weather station: 39160
Latitude: 55.18 | Longitude: -6.16 | Altitude: 156
|Main||Year 1988 climate||Select a month|
To calculate annual averages, we analyzed data of 357 days (97.54% of year).
If in the average or annual total of some data is missing information of 10 or more days, this is not disp... | <urn:uuid:c9607554-dd59-4b6c-aa2c-f7cae4b18b4b> | 2.671875 | 346 | Structured Data | Science & Tech. | 68.456947 | 2,615 |
Data reported by the weather station: 129700 (LHKE)
Latitude: 46.91 | Longitude: 19.75 | Altitude: 113
|Main||Year 1984 climate||Select a month|
To calculate annual averages, we analyzed data of 358 days (97.81% of year).
If in the average or annual total of some data is missing information of 10 or more days, this is ... | <urn:uuid:8688daa1-b861-4cc0-9d0b-f94a14a338c5> | 2.515625 | 355 | Structured Data | Science & Tech. | 70.242158 | 2,616 |
Features formed from those igneous rocks that have reached or nearly reached the Earth's surface before solidifying. [Adapted from Glossary of Geology, 4th ed.]
Alexandria Digital Library Feature Type Thesaurus
Earth tides and volcano monitoring [ More info] Article in the May 28, 1998 issue of Volcano Watch describing... | <urn:uuid:5b0c8445-e142-499d-bdcc-20231a3c1ca4> | 3.40625 | 577 | Content Listing | Science & Tech. | 23.172354 | 2,617 |
Meitnerium: the essentials
Element 109, meitnerium, is a synthetic element that is not present in the environment at all. There is no dispute concerning the name meitnerium for element 109.
The interested reader should consult the on-line version of The Wonderful World of Atoms and Nuclei for a fascinating insight into... | <urn:uuid:9783b886-409e-4c36-a0ea-87626c9a7fc5> | 3.796875 | 378 | Knowledge Article | Science & Tech. | 37.117744 | 2,618 |
Giant Ice Avalanches Found on Saturn’s Moon Iapetus
- 1:00 PM
- Categories: Space
When planetary scientist Kelsi Singer studied images of Saturn’s icy moon Iapetus, she found something unexpected: huge ice avalanches.
As far as moons go, Iapetus is as eccentric as they come. One half of the planet is light-colored and ... | <urn:uuid:07083528-c4a8-4d58-937a-e0ab837a7c85> | 3.390625 | 688 | News Article | Science & Tech. | 45.276441 | 2,619 |
This is an excerpt from EERE Network News, a weekly electronic newsletter.
The Bright Lights in New York Could Be Solar
The big city glow of New York could be coming from more than the bright lights on Broadway. The Big Apple also is increasingly aglow with solar power, particularly from rooftop photovoltaic (PV) solar... | <urn:uuid:12d82b9c-b64d-4186-8f59-481935c308af> | 3.140625 | 295 | News (Org.) | Science & Tech. | 43.43439 | 2,620 |
By Michael Brooks
The New Scientist
23 March 2009
IT IS midnight on 22 September 2012 and the skies above Manhattan are
filled with a flickering curtain of colourful light. Few New Yorkers
have seen the aurora this far south but their fascination is
short-lived. Within a few seconds, electric bulbs dim and flicker, the... | <urn:uuid:0a187534-976d-49ca-b772-f019ecee6a5f> | 2.671875 | 307 | Truncated | Science & Tech. | 50.594286 | 2,621 |
Sunlight makes asteroids binary system
A new study puts solar spin on asteroids, their moons and Earth impacts.
July 9, 2008
Provided by the University of Maryland, College Park
July 9, 2008
This image shows the asteroid Ida, on the left, and its moon Dactyl.
Photo by NEAR/JPL/NASA
Asteroids with moons, which scientist... | <urn:uuid:58962c7f-af21-417a-8a6f-ebdee5b30024> | 4.03125 | 1,112 | News Article | Science & Tech. | 32.026493 | 2,622 |
Last year, researchers reported that radar mapping of Titan by the Cassini spacecraft had found a peculiar shift in landmarks on the moon's surface of up to 19 miles (30 kilometers) between October 2004 and May 2007.This last bit about the theory being testable makes this more interesting to me. It's a great example to... | <urn:uuid:a3d23f16-9e4d-4255-a979-2c8b1e668df7> | 4.15625 | 321 | Personal Blog | Science & Tech. | 45.469228 | 2,623 |
Phil sees early spring; close shave forecast for asteroidby John Nelander
Punxsutawney Phil did not see his shadow after venturing out at Gobbler’s Knob in Pennsylvania Saturday. That means an early spring is on the horizon. Well, at least at Gobbler’s Knob.
Your results may vary. Spring is expected to come early for t... | <urn:uuid:423da319-d91c-49f2-80dd-a0f2e68e74d3> | 2.578125 | 612 | News Article | Science & Tech. | 60.384538 | 2,624 |
Global event measures, like sphericity or thrust, can only be used to determine the jet axes for back-to-back 2-jet events. To determine the individual jet axes in events with three or more jets, or with two (main) jets which are not back-to-back, cluster algorithms are customarily used. In these, nearby particles are ... | <urn:uuid:719f3066-89e5-4abd-b63c-a90fa52a1862> | 2.65625 | 627 | Academic Writing | Science & Tech. | 35.820524 | 2,625 |
It is known that all sensory information is input to the brain as neural spike sequences. Now, to distinguish between the spike sequences generated by retinal red/blue/green cone cells from each other, and these from the cochlear (inner ear) hair cells, and so on, some sort of encoding scheme must be used.
To further c... | <urn:uuid:fa87f4bc-f34c-4dc3-87ac-c93d4783a6ad> | 3 | 623 | Q&A Forum | Science & Tech. | 40.130075 | 2,626 |
Though six months have passed since news first broke that oil was pouring into the Gulf of Mexico following the Deepwater Horizon explosion, a Texas Tech University environmental toxicologist said many lessons have been learned and more research still is needed.
Ron Kendall, director of The Institute of Environmental a... | <urn:uuid:f7a3f1ea-06c6-4e1a-8b36-4a705ca7e53d> | 3.328125 | 643 | News Article | Science & Tech. | 44.374642 | 2,627 |
I’m sure you’ve noticed by now how much the media loves tug-on-the-heartstrings images of oiled birds, dead fish and mile-wide slicks. But have you heard about the millions of casualties in every square foot of mud? The news reports overwhelmingly fail to mention how this oil disaster is affecting a keystone group in m... | <urn:uuid:0a38b7da-98de-4b1d-acac-3e52b6d3afbf> | 3.265625 | 1,318 | Personal Blog | Science & Tech. | 44.414814 | 2,628 |
Creates a new stored procedure.
procedure-nameshould follow the normal rules for naming database objects, see Naming Objects.
procedure-nameis specified in its unqualified form, the procedure will be created in the schema which has the same name as the current ident.
procedure-nameis specified in its fully qualified fo... | <urn:uuid:f88c42d0-a47c-476d-82e9-115444f135ee> | 3.0625 | 1,023 | Documentation | Software Dev. | 29.30853 | 2,629 |
See Also: Container Members
A Gtk# user interface is constructed by nesting widgets inside widgets. Gtk.Container widgets are the inner nodes in the resulting tree of widgets: they contain other widgets. So, for example, you might have a Gtk.Window containing a Gtk.Frame containing a Gtk.Label. If you wanted an image i... | <urn:uuid:b736aefb-680e-4646-a5f2-16a27eb914f1> | 3.59375 | 299 | Documentation | Software Dev. | 64.066162 | 2,630 |
The one important task that only embedders (as opposed to extension writers) of the Python interpreter have to worry about is the initialization, and possibly the finalization, of the Python interpreter. Most functionality of the interpreter can only be used after the interpreter has been initialized.
The basic initial... | <urn:uuid:2eb0a641-c3c3-4313-a043-b8cced12b317> | 3.078125 | 545 | Documentation | Software Dev. | 26.811959 | 2,631 |
10 Jan 2013
Reviving Europe’s Biodiversity By Importing Exotic Animals
Scientists are conducting intriguing — and counterintuitive — experiments at several sites in Germany: Bringing back long-lost herbivores, such as water buffalo, to encourage the spread of native plants that have fared poorly in Europe’s human-domin... | <urn:uuid:f4352ef5-6449-4280-9272-4f323dc45797> | 3.25 | 2,822 | Nonfiction Writing | Science & Tech. | 32.401545 | 2,632 |
||This article includes a list of references, related reading or external links, but its sources remain unclear because it lacks inline citations. (July 2011)|
||This article needs additional citations for verification. (July 2011)|
In probability and statistics, a probability distribution assigns a probability to each... | <urn:uuid:f92d737a-9da0-41b7-b384-7872f4e1a273> | 3.796875 | 3,849 | Knowledge Article | Science & Tech. | 12.192998 | 2,633 |
I am Trying to write a program that does the following:
Write a program that simulates the rolling of two dice. The program should use rand to roll the first dice and should use rand
again to roll the second dice. The sum of the two values should then be calculated. [note: each dice can show an integer value from 1-6, ... | <urn:uuid:57ffab9f-ef75-4e29-acc2-c10059182ff5> | 3.140625 | 183 | Comment Section | Software Dev. | 77.261364 | 2,634 |
a-Linux is an x86 floppy-based mini-distribution, where assembly code meets Linux kernel. It contains only programs written in assembly language. It is extemely small, yet functional, and provides HTTP and FTP services out-of-the-box.
|Tags||Software Development Embedded Systems Operating Systems Software Distribution ... | <urn:uuid:2fc5fa51-b5a7-467b-a71d-0af476933374> | 2.875 | 100 | Product Page | Software Dev. | 39.923846 | 2,635 |
GNU TeXmacs is a free wysiwyw (what you see is what you want) editing platform with special features for scientists. The software aims to provide a unified and user friendly framework for editing structured documents with different types of content: text, mathematics, graphics, interactive content. TeXmacs can also be ... | <urn:uuid:709e7df0-45a9-4d0c-b585-9a1aa32e15e6> | 2.515625 | 766 | Content Listing | Software Dev. | 34.462677 | 2,636 |
exception Internal_Error datatype token = Symb of char | Id of string | Number of int val symbols = String.explode "+-*()"The exception is for catching internal errors in the lexer. I tend to have such an exception in each module and raise it whenever something is non-expected. This way I eliminate an unexhaustive patt... | <urn:uuid:705b04ee-4159-4c15-8eae-e048b0ce23f4> | 2.578125 | 961 | Documentation | Software Dev. | 69.930837 | 2,637 |
By Deja Dragovic
With the BP Oil Spill trial starting, here is a recap of the environmental impact caused by the Deepwater Horizon disaster and oil spill in April 2010.
Due to a delicate ecosystem that exists in the Gulf, of the many different species of flora and fauna interacting perfectly in their natural environmen... | <urn:uuid:1f650ea0-6c2d-4774-b761-694ec8f1309d> | 3.390625 | 636 | Truncated | Science & Tech. | 26.093893 | 2,638 |
Angle, Side Length of a Triangle
Date: 9/4/96 at 17:19:5 From: Robert Inman Subject: Angle, Side Length of a Triangle Hi Dr. Math, What is the relation between the angles of a triangle and the length of its sides? For example, if I know that a triangle has a 90 degree angle, I know the length of one leg, and the angle ... | <urn:uuid:164722f6-b9a2-42fd-8361-dc8f40b64b2f> | 3.265625 | 406 | Q&A Forum | Science & Tech. | 77.870463 | 2,639 |
Question: determine whether the points lie on straight lines
- A(2,4,2), B(3,7,-2), C(1,3,3)
- D(0,-5,5), E(1,-2,4), F(3,4,2)
Answer: first one no, second one yes
My work: only the one of the variables would be changing and it would be by a constant factor (e.g. 3,6,9,12...). I think this because a line has a constant ... | <urn:uuid:2dad97dc-e8ee-408d-8f5d-569551799b23> | 2.796875 | 135 | Q&A Forum | Science & Tech. | 116.312989 | 2,640 |
Silicic volcanism: an undervalued component of large igneous provinces and volcanic rifted margins
Bryan, Scott E.; Riley, Teal R.; Jerram, Dougal A.; Stephens, Christopher J.; Leat, Philip T.. 2002 Silicic volcanism: an undervalued component of large igneous provinces and volcanic rifted margins. In: Menzies, M.A.; Kl... | <urn:uuid:d50ed538-88eb-4397-a068-b3a3e896a0e9> | 2.96875 | 814 | Truncated | Science & Tech. | 21.319379 | 2,641 |
Programming is the act of creating new software for use on a computer system. This is often categorized into two broad types - system software and application software. Programming is the art of creating the instructions that tell a computer what to do. Without these instructions, the source code of an application, the... | <urn:uuid:0678282f-5868-437a-98b9-13f5964fdaf1> | 4.0625 | 371 | Knowledge Article | Software Dev. | 45.0895 | 2,642 |
Exotic life beyond Earth? Looking for life as we don't know it
Scientists at a new interdisciplinary research institute in Austria are working to uncover how life might evolve with "exotic" biochemistry and solvents, such as sulphuric acid instead of water. Their research ...
USF Study Shows First Direct Evidence of Oc... | <urn:uuid:a41036b9-a0d7-453b-906b-18fbad01f78e> | 2.734375 | 753 | Content Listing | Science & Tech. | 39.11589 | 2,643 |
Snow flakes, ice crystals, beautiful round baubles — Christmas is the time of symmetry, so here's a few articles to celebrate it!
Everyone knows what symmetry is, and the ability to spot it seems to be hard-wired into our brains. Mario Livio explains how the symmetry we admire in a snow flake might also explain the wor... | <urn:uuid:fbca10dd-f99f-4490-a1fe-ba962ccfe4ae> | 3.0625 | 242 | Content Listing | Science & Tech. | 43.424328 | 2,644 |
Optical tweezers have been used by biophysicists since their invention at Bell Labs in the 1980s, and are typically used to study cellular components. But they have a few drawbacks, not least of which are overheating and inefficiency.
So engineers at Harvard have been working on a next-gen model they call plasmonic nan... | <urn:uuid:dab9a986-de3d-48a2-ad2e-f208d5171d63> | 4.15625 | 274 | Truncated | Science & Tech. | 33.476858 | 2,645 |
Photo: Altered from graphic by C. Carreau / ESA
Item: The moon moves away from the earth about 1.5 inches a year. In 6,000 years, the moon would have moved only 750 feet. In a billion years, those 1.5 inches a year would move the moon out 23,674.24 miles. A moon moving away at that distance would have a tremendous impa... | <urn:uuid:3b3e6225-6650-4748-b300-1778b53d4264> | 3.78125 | 1,102 | News Article | Science & Tech. | 63.135989 | 2,646 |
New research finds that an adjustment to wind turbines could allow bats and wind power generation to better co-exist. Writing in in the Journal of Wildlife Management, biologists report that that slowing turbine blades to near motionless in low-wind periods significantly reduces the number of bat deaths. The researcher... | <urn:uuid:1d11e204-d4d8-41c1-8d33-16f01d5ec9ac> | 3.28125 | 132 | Truncated | Science & Tech. | 29.486447 | 2,647 |
Looks can deceive…
A South American sabertooth-lookalike, Thylacosmilus was in fact a marsupial – at roughly the size of a jaguar, one of the largest marsupial carnivores.
Looks a great deal like a saber tooth tiger, huh?
The similarity between Thylacosmilus and Smilodon is an excellent example of convergent evolution ... | <urn:uuid:ee0a7d77-285f-4640-9af3-5022a1b0e3ab> | 3.34375 | 351 | Personal Blog | Science & Tech. | 27.316397 | 2,648 |
Using Command Line using Visual C++ 2008
- Select Start >> All Programs >> Microsoft Visual C++ 2008 Express Edition >> Visual Studio Tools >> Visual Studio 2008 Command Prompt (Run with administrator privileges)
- Once you are in the command line, you can use any editor such as edit to write a C program.
C:> edit mypr... | <urn:uuid:ec3508db-4b08-4f7e-8437-ae121afce79c> | 3.109375 | 575 | Tutorial | Software Dev. | 57.9845 | 2,649 |
Higgs: the man behind the elusive particle
Peter Higgs, the physicist immortalised by the particle bearing his name, was in Amsterdam recently. His landmark publication, predicting the existence of the Higgs-boson, was rejected at first. Apparently, "the editor didn’t understand it at all."
Inside the walls of NIKHEF, ... | <urn:uuid:732648f7-ead6-4d0e-b2cb-e75bffd44b45> | 2.515625 | 1,575 | Nonfiction Writing | Science & Tech. | 47.995168 | 2,650 |
Fast fish speed up potential for better ocean robots
Scientists say a discovery about a fast-moving reef fish could help engineers design better underwater robots and vehicles.
A research team working on the Great Barrier Reef has found coral reef wrasse use a small amount of energy to move at very high speeds.
Dr Chri... | <urn:uuid:741fca0a-5cf8-4d74-aa91-d47360066529> | 3.359375 | 286 | News Article | Science & Tech. | 54.901616 | 2,651 |
Wearing diamonds on the inside – to monitor biochemistry
Diamonds are biocompatible and cheap enough to be considered for use as sensors inside the body. Some cancer treatments require regular monitoring of blood. David Hoxley is investigating the use of diamond as a sensor of blood chemistry. The area is known as micr... | <urn:uuid:aaf6cbdb-3cd6-4c22-bad6-9354368f964d> | 3.453125 | 1,754 | Audio Transcript | Science & Tech. | 48.920896 | 2,652 |
How Global Warming Will Make Hurricanes Like Irene Worse
Stay up to date with the latest headlines via email.
Climate science suggests that global warming will make hurricanes like Irene more destructive in three ways (all things being equal):
On the third point, warming also extends the range of warm SSTs, which can h... | <urn:uuid:4d67788f-56d6-4533-a558-5579a580e5f9> | 2.921875 | 712 | News Article | Science & Tech. | 44.323302 | 2,653 |
The total number of additional bodies in a chart is limited to 10.
A typical use of this feature is to construct family charts, where the asteroids named
like the family members are added to a normal chart.
Currently there are about 17'620
asteroids named officially by the IAU (International Astronomical Union).
This l... | <urn:uuid:bb8a3cc4-eabb-493f-ba0a-231975b7c915> | 2.625 | 194 | Structured Data | Science & Tech. | 53.686091 | 2,654 |
More than 3,050 species of invertebrates inhabit the benthos of the Barents Sea (Sirenko, 2001). Total fauna biomass, including benthic species, generally increases near the Polar Front, in shallow regions, and near the edges of banks. The richest species diversity is found on sandy silts, and silty-sand floors. Lower ... | <urn:uuid:b17bd043-0236-442d-92ae-21eb5aff043d> | 3.0625 | 120 | Knowledge Article | Science & Tech. | 45.865833 | 2,655 |
On September 19, the Cary Institute hosted a one-day conference on the impacts of tropical storms Irene and Lee on the Hudson River. Organized by the Hudson River Environmental Society, with leadership from Cary's Stuart Findlay, the forum examined how the river and estuary responded to the storms, which dropped an est... | <urn:uuid:40f6fcd0-48f9-4b94-a078-36492fab999c> | 2.703125 | 290 | News (Org.) | Science & Tech. | 18.458671 | 2,656 |
Current Biology, Volume 19, Issue 13, 1096-1101 14 July 2009
Mechanical Forces of Fission Yeast Growth
Supplemental Data for Minc et al.
- Document S1. Detailed Description of the Theoretical Model, Four Figures, and One Table (PDF 844 kb)
- Movie S1. Fission Yeast Cells Growing in Very Large PDMS Chambers (MOV 4748 kb... | <urn:uuid:a19c3cd7-85fd-42bd-bcc4-96bda6f28978> | 2.578125 | 652 | Academic Writing | Science & Tech. | 64.691093 | 2,657 |
The Amazon a Key Ecosystem.
Amazonia – an example of a key ecosystem for climate regulation (based on the presentation provided by Antonio Nobre 2007)
The climate of Amazonia is strongly dependent on the presence of the forest. Amazonia has been described as a “Green Ocean” with satellite imagery revealing very high cl... | <urn:uuid:50841248-9e53-49ff-861b-edff80894e1b> | 3.6875 | 503 | Knowledge Article | Science & Tech. | 18.201301 | 2,658 |
The total energy is:
EKinetic + EPotential = Etotal
1) 1/2*mv2 + 1/2*kxmax2 = Etotal
When the spring is fully compress the kinetic energy is zero and so the potential energy is equal to the total energy:
2) 1/2*kxmax2 = Etotal
When the spring is not compress at all, the potential energy is zero, which results in the ki... | <urn:uuid:d78590ad-6144-48b9-a1ad-e494e445fe7a> | 2.609375 | 170 | Q&A Forum | Science & Tech. | 29.748678 | 2,659 |
Mulvaney, R., Abram, N.J., Hindmarsh, R.C.A., Arrowsmith, C., Fleet, L., Triest, J., Sime, L.C., Alemany, O. and Foord, S. 2012. Recent Antarctic Peninsula warming relative to Holocene climate and ice-shelf history. Nature 489: 10.1038/nature11391.
The authors write that "the Antarctic Peninsula is at present one of th... | <urn:uuid:e06a8694-4bf8-4769-97d6-2964abb22c8b> | 3.390625 | 643 | Knowledge Article | Science & Tech. | 59.936411 | 2,660 |
Milkweed is a challenging plant to eat. It is covered with hairs, contains a sticky, gummy latex, and is highly toxic. Yet there are a variety of insects that are specialists on feeding on milkweed. The caterpillar of the monarch butterfly is the most famous.
Anurag Agrawal shares his research on the relationship betwe... | <urn:uuid:7f581c8b-c855-4d80-89f2-4febc96696e8> | 2.875 | 130 | Truncated | Science & Tech. | 35.841748 | 2,661 |
By Cory Nealon
10:05 AM EST, February 1, 2012
Atlantic sturgeon in Chesapeake Bay and elsewhere will be designated an endangered species, federal regulators announced Tuesday.
Effective April 6, the listing will provide greater protection for the dinosaur-like fish and may add irksome regulations to the commercial fish... | <urn:uuid:b2823956-32fb-4315-be53-91bb185aceab> | 3.140625 | 390 | News Article | Science & Tech. | 44.630621 | 2,662 |
You should learn the graphs of the trigonometric functions. These will help you remember the values of the trigonometric functions. For example, it is clear from the graph that sin(π)=0.
y=sin(x) (which looks like the letter S for sin)
y=cos(x) (which looks like the letter C for cos)
y=tan(x) (note that the vertical li... | <urn:uuid:1b2a76dd-ab98-41ec-8ec2-c60479cf4ca7> | 3.8125 | 238 | Tutorial | Science & Tech. | 77.897062 | 2,663 |
Handheld devices such as the iPhone and iPod/Touch are portable repositories for a user's personal data. The data may be documents, but it often takes the form of databases. For an iOS application to use a database, it relies on a Cocoa API known as "Core Data." In this article, I examine how Core Data works within an ... | <urn:uuid:b1d1e5cb-4261-4d57-ace4-a57561410be6> | 3.46875 | 658 | Documentation | Software Dev. | 42.823364 | 2,664 |
“A great blueprint for combating climate change.” –Bryan Walsh, Time on Plan B 4.0: Mobilizing to Save Civilization.
Click here to view the most recent Carbon Emissions Indicator and Data
Global carbon dioxide (CO2) emissions from the burning of fossil fuels stood at a record 8.38 gigatons of carbon (GtC) in 2006, 20 p... | <urn:uuid:23db4ead-c76b-4972-839b-d19539c90371> | 3.546875 | 1,577 | Knowledge Article | Science & Tech. | 44.612022 | 2,665 |
This article, written by Charles W. Schmidt, a freelance writer specializing in science, medicine and technology, appeared first in Environmental Health Perspectives—the peer-reviewed, open access journal of the National Institute of Environmental Health Sciences.
The article is a verbatim version of the original and i... | <urn:uuid:6853bbe1-63eb-455a-9e4e-c4663ec7333a> | 3.75 | 5,257 | Truncated | Science & Tech. | 51.524085 | 2,666 |
WASHINGTON, Aug. 10, 2011 — To the surprisingly inventive uses for banana peels which include polishing silverware, leather shoes, and the leaves of house plants, scientists have added purification of drinking water contaminated with potentially toxic metals. That's the topic of the latest episode in the American Chemi... | <urn:uuid:bc3acc63-74c4-4925-a2b4-0af156509f7f> | 3.453125 | 637 | News (Org.) | Science & Tech. | 32.118097 | 2,667 |
The Space Station must generate its own power in order to sustain itself and the lives of those onboard. Using state of the art technology, the Station harvests solar power to power the subsystems onboard and create a habitable environment for the astronauts. On Earth, it's important to conserve our power sources and f... | <urn:uuid:4881e38d-b95c-4845-a05f-0eaa99f1131e> | 2.96875 | 153 | News (Org.) | Science & Tech. | 49.017941 | 2,668 |
Researching the ancient bristlecone pines with Google Earth
— John Muir
Since the days of Charles Darwin, biologists have struggled with ways to represent our planet's incredible biological diversity on maps that convey both meaningful information and a realistic sense of scale. In recent years, this challenge has morp... | <urn:uuid:a793f3e6-7021-443e-aaec-a9d425ada7f7> | 3.859375 | 2,976 | Knowledge Article | Science & Tech. | 31.327249 | 2,669 |
Our universe’s shortest algorithm has 3 lines and computes all possible universes, not just ours.
To predict we need more: a plausible prior measure
1. Weak assumption on this measure: the universe is sampled from a formally describable prior. Then futures with lots of randomness and without short descriptions are nece... | <urn:uuid:9dfb0850-f84b-43b7-8318-16f8fab2ef5d> | 2.78125 | 128 | Academic Writing | Science & Tech. | 43.7535 | 2,670 |
The path is sometimes a big security problem. It is a very common way to hack into a system using some mistakes in path settings. It is easy to make Trojan horse attacks if hacker gets root or other users to execute his versions of commands.
A common mistake in the past (?) was to keep '.' in the root's path. Malicious... | <urn:uuid:cfe387d3-0993-40a3-a344-a8aeb96575ad> | 2.75 | 363 | Tutorial | Software Dev. | 56.120724 | 2,671 |
Urban Ants Handle Heat Better
The heat of cities is transforming how urban ants respond to extreme temperatures, providing glimpses of the impacts that changes in global climate might trigger, an international team of scientists now reports.
Cities can be 10 to 15 degrees Fahrenheit hotter than surrounding rural zones,... | <urn:uuid:a866f28c-35f6-438b-bd22-80f91eab159e> | 3.9375 | 377 | News Article | Science & Tech. | 35.343476 | 2,672 |
A small, flat rock known as Coronation suffered the wrath of Curiosity’s laser when the Mars rover finally fired up its ChemCam instrument and delivered 30 pulses of energy at the rock over a 10-second period.
The laser pulses, each delivering more than 1 million watts of power for around 5 one-billionths of a second, ... | <urn:uuid:ee2bdcd9-b767-4b68-a8ba-01a5c37e015c> | 3.53125 | 377 | News Article | Science & Tech. | 46.474735 | 2,673 |
If you have a pet canary that keeps pecking at its foot, slip its head through the hole in a CD, and watch it try to peck at anything.
Surround a small goldfish bowl with CDs, shiny side in, to stop the fish from feeling lonely, while giving them a feeling of spaciousness.
Dissolved in ethyl acetate, CDs are said to ma... | <urn:uuid:71cdb25d-47f9-4aed-9650-8579c92d6d4d> | 2.53125 | 225 | Truncated | Science & Tech. | 63.253342 | 2,674 |
WASHINGTON – Weakened by inbreeding and disease, bumble bees have died off at an astonishing rate over the past 20 years, with some US populations diving more than 90 percent, according to a new study.
The findings are of concern because bees play a crucial role in pollinating crops such as tomatoes, peppers and berrie... | <urn:uuid:708af118-67d2-4bfe-8273-1cce9443edd6> | 2.75 | 469 | News Article | Science & Tech. | 33.736288 | 2,675 |
Asteroids are rocky objects. There are many different types of asteroid, consisting of different amounts of metal, silicate and carbon. They also have different histories. Some of them have completely melted like the planets, whereas others have not melted but have been altered by water. This means there are a wide var... | <urn:uuid:fd674259-5534-441c-8e71-31dcb6b241d3> | 4.21875 | 436 | Knowledge Article | Science & Tech. | 48.786781 | 2,676 |
Project OspreyTrack: Technology
OVERVIEW * TECHNOLOGY * BIOGRAPHIES * MAPS * OSPREYCAM * OSPREY LINKS
Satellite Tracking Technology
The new wave of miniature GPS-enabled satellite transmitter technology is revolutionizing how we study the migrations of birds and other animals. The first transmitters that were used in s... | <urn:uuid:9e2c8216-d3b9-461b-96c4-61697c8036be> | 3.375 | 242 | Product Page | Science & Tech. | 35.145949 | 2,677 |
The NNSA’s National Ignition Facility (NIF) surpassed a critical milestone in its efforts to meet one of modern science's greatest challenges: achieving fusion ignition and energy gain in a laboratory setting.
NIF's 192 lasers fired in perfect unison, delivering a record 1.875 million joules (MJ) of ultraviolet laser l... | <urn:uuid:81daccf8-c0e7-4637-9fa7-ca55791d3b2c> | 2.890625 | 239 | News (Org.) | Science & Tech. | 54.847013 | 2,678 |
NOAA INVESTIGATES GIANT DEEP-SEA MYSTERY SQUID'
December 20, 2001 Many scientific discoveries begin with scientists asking, "Hey, did you see that?" This was certainly true when a group of researchers led by NOAA spotted a 21-foot-long squid, dubbed the "Mystery Squid," while conducting an undersea project. (Click NOAA... | <urn:uuid:09a16a50-5602-463e-98c4-1cd413556448> | 3.5625 | 939 | News (Org.) | Science & Tech. | 39.862033 | 2,679 |
Generation W: The Generation of the Wolf
Kids, today, rule their world.
And it’s a new world, unlike anything that’s come before.
A world where science has replaced many mysteries.
A smaller world, where the most feared and exotic creatures are right at kids’ fingertips.
A visual world, where they can see what others c... | <urn:uuid:c2d5962c-4770-4f7b-a574-610d58c8ae84> | 2.671875 | 1,787 | Audio Transcript | Science & Tech. | 61.891674 | 2,680 |
Extratropical Water Level Guidance
What is a datum?
In the context of this site, datum refers to a vertical tidal datum.
The four datums used by this site are defined as follows. For more on
tidal datums, please see
NOAA's National Ocean Service (NOS) tidal datum definition page.
Highest Astronomical Tide|
| "The [heig... | <urn:uuid:11311976-8e2d-4298-8fa8-5278485060af> | 3.6875 | 581 | Documentation | Science & Tech. | 53.65903 | 2,681 |
Plant traits - the morphological, anatomical, physiological, biochemical and phenological characteristics of plants and their organs - determine how primary producers respond to environmental factors, affect other trophic levels, influence ecosystem processes and services and provide a link from species richness to eco... | <urn:uuid:bd895a0b-09eb-4aaa-91d3-76944727dca7> | 3.109375 | 358 | Knowledge Article | Science & Tech. | 2.931657 | 2,682 |
Chemical biology news from across RSC Publishing.
3D biological metal detection
08 May 2008
The water flea is the testbed for a non-destructive 3D imaging method that pinpoints metals in vivo.
Laszlo Vincze, from Ghent University, Belgium, and his colleagues in Belgium, Hungary and Germany have combined x-ray technique... | <urn:uuid:179d36cb-6cbd-448b-afa9-7f048c5e07ec> | 2.65625 | 485 | Content Listing | Science & Tech. | 39.17632 | 2,683 |
In the quest to understand how the world's weather moves around the globe, scientists have had to tease apart different kinds of atmospheric movement, such as the great jet streams that can move across a whole hemisphere versus more intricate, localized flows. Much the same must currently be done to understand the vari... | <urn:uuid:7fcb6168-ec0e-4aa6-80e9-911ef823961a> | 3.640625 | 939 | News Article | Science & Tech. | 45.645506 | 2,684 |
Puppis ( Latin: poop deck) is a southern constellation. It is the largest of the four parts into which Argo Navis was split.
Notable deep sky objects
As the milky way runs through Puppis, there are a large number of open clusters in the constellation. Messier 46 (M46) and Messier 47 (M47) are two open clusters in the s... | <urn:uuid:a70effe7-19a7-4699-ac73-a9d13653a228> | 2.96875 | 443 | Knowledge Article | Science & Tech. | 75.07047 | 2,685 |
Changes in the speed that ice travels in more than 200 outlet glaciers indicates that Greenland’s contribution to rising sea level in the 21st century might be significantly less than the upper limits some scientists thought possible, a new study shows.
“So far, on average we’re seeing about a 30 percent speedup in 10 ... | <urn:uuid:6f9dce10-b6ee-453f-82b8-607308b43450> | 3.546875 | 934 | News Article | Science & Tech. | 46.369741 | 2,686 |
Renewable Energy Sources
One of the most common uses of renewable energy is to heat the water of outdoor swimming pools using solar collectors.
While solar energy is a familiar terminology these days, many people don’t know much about any of the other renewable energy sources yet? These are wind, geothermal heat, and r... | <urn:uuid:4bf9fc24-3891-464d-b075-4175395d5b91> | 3.171875 | 689 | Knowledge Article | Science & Tech. | 29.124329 | 2,687 |
A metal is a chemical element which can form metal connections and lose electrons to form cations (positive Ion S) (and ionic connections in the case of alkaline). Metals are one of the three groups of elements distinguished by their properties from Ion isation and Chemical bond; the two others are the Métalloïde S and... | <urn:uuid:8227ba7f-5ef2-4ec2-95de-428a657af377> | 3.890625 | 3,374 | Knowledge Article | Science & Tech. | 16.976311 | 2,688 |
The nanosatellite called O/OREOS being worked on. Credit: NASA
Here’s a video of the launch of O/OREOS:
“With O/OREOS we can analyse the stability of organics in the local space environment in real-time and test flight hardware that can be used for future payloads to address fundamental astrobiology objectives,” said P... | <urn:uuid:df2215ca-a1d0-4ea4-9c2a-4b2d6acffe37> | 3.6875 | 347 | News Article | Science & Tech. | 27.444717 | 2,689 |
The Fourier transform is a fundamental tool in many parts of mathematics. This is even more so when one looks at various natural generalizations of it. This article contains brief descriptions of the Fourier transform in various contexts and links to articles about its use.
Basic analysis, complex numbers.
Different ki... | <urn:uuid:3ab8b4a8-8168-41e1-ba54-d1a8c0ca820b> | 3.6875 | 319 | Knowledge Article | Science & Tech. | 48.098659 | 2,690 |
Climate change is fast becoming one of the most important issues of our time. Not to dismiss the political discussions going on across the U.S., but a recent analysis of public opinion sponsored by the National Science Foundation indicates that 75 percent of the American public believes the earth’s climate is warming a... | <urn:uuid:17263ba3-e51e-4312-8d03-520720bf10b7> | 3.6875 | 555 | Academic Writing | Science & Tech. | 42.632652 | 2,691 |
In terms of carbon emissions, traditionally-derived natural gas is less pollutive than other forms of fossil fuels. The Union of Concerned Scientists reports that natural gas produces 43 percent and 30 percent fewer emissions per unit of energy compared to coal and oil, respectively. This is very good news considering ... | <urn:uuid:1bb44194-a7ed-4316-8cb6-b3366257052f> | 3.9375 | 384 | News Article | Science & Tech. | 39.010932 | 2,692 |
NASA's Kepler Space Telescope has now identified 1,235 candidates for planethood, including several entire solar systems and some potentially habitable planets.
The discovery should keep astronomers on Earth and telescopes in space busy for decades.
"This just revolutionizes planetary studies," said Steve Howell, an as... | <urn:uuid:4aacbea2-3229-45e4-873b-02dee34b4b29> | 3.203125 | 892 | News Article | Science & Tech. | 47.984475 | 2,693 |
February 7, 2013 | 4
This blog is called “Roots of Unity” because in 2004 I thought it would be an awesome band name.
I encountered the term in a college math class, and I had no illusions that I would be in a band at any time in the near future, but it seemed prudent to have some good band names in my back pocket, jus... | <urn:uuid:12664308-11d2-484b-a83f-778acaab93c1> | 2.546875 | 1,344 | Personal Blog | Science & Tech. | 66.139894 | 2,694 |
14 May 2012
Africa’s Ambitious Experiment To Preserve Threatened Wildlife
Five nations in southern Africa are joining together to create a huge conservation area that will extend across their borders and expand critical territory for elephants. But can these new protections reverse decades of decline for area wildlife ... | <urn:uuid:70459f76-f001-45e9-8e3b-f0ce6c9ffe87> | 3.40625 | 2,668 | Truncated | Science & Tech. | 31.585413 | 2,695 |
A catalytic cycle in chemistry is a term for a multistep reaction mechanism that involves a catalyst. The catalytic cycle is the main method for describing the role of catalysts in biochemistry, organometallic chemistry, materials science, etc. Often such cycles show the conversion of a precatalyst to the catalyst. Sin... | <urn:uuid:3a473dde-390c-4b6f-a295-73b85e9dee26> | 3.796875 | 412 | Knowledge Article | Science & Tech. | 24.978029 | 2,696 |
Unidentified flying object
Unidentified flying object (commonly abbreviated as UFO or U.F.O.) is the popular term for any aerial phenomenon whose cause cannot be easily or immediately identified. Both military and civilian research show that a significant majority of UFO sightings have been identified after further inv... | <urn:uuid:64e2742d-a9dc-4926-a37f-aca5a6bb12d2> | 3.21875 | 422 | Knowledge Article | Science & Tech. | 55.616376 | 2,697 |
In heat transfer, conduction (or heat conduction) is the transfer of heat energy by microscopic diffusion and collisions of particles or quasi-particles within a body due to a temperature gradient. The microscopically diffusing and colliding objects include molecules, electrons, atoms, and phonons. They transfer micros... | <urn:uuid:a6b78181-f958-42b3-9d94-504762bb0fb7> | 3.859375 | 5,230 | Knowledge Article | Science & Tech. | 36.090845 | 2,698 |
The Tusi-couple is a mathematical device in which a small circle rotates inside a larger circle twice the diameter of the smaller circle. Rotations of the circles cause a point on the circumference of the smaller circle to oscillate back and forth in linear motion along a diameter of the larger circle.
The couple was f... | <urn:uuid:dff3df46-e4c5-4cb0-a22b-71d7fd758bb5> | 3.640625 | 1,423 | Knowledge Article | Science & Tech. | 52.402231 | 2,699 |