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MATHEMATICS is often thought to be universally and unassailably true. I have even heard it argued that God, omnipotent though He may be, could not make math false even if He was impulsive enough to try it. Can mathematicians actually prove that math is true? If they cannot, does the fact that math is so useful in solvi... | <urn:uuid:7e60be39-5ae5-486f-84a5-f0cf36a5f3c1> | 3.046875 | 2,169 | Personal Blog | Science & Tech. | 38.958087 | 1,600 |
A chemical reaction between iron-containing minerals and water may produce enough hydrogen “food” to sustain microbial communities living in pores and cracks within the enormous volume of rock below the ocean floor and parts of the continents, according to a new study led by the University of Colorado Boulder.
Universi... | <urn:uuid:6427b637-36e9-419e-9ed4-2363f843d44f> | 3.484375 | 344 | Content Listing | Science & Tech. | 32.158026 | 1,601 |
Brazil has the potential to be a world leader in solar energy. So far however, the country hasn't been doing much. Solar technology is still in its infancy here. But with help from Germany's International Climate Initiative (IKI), the country's largest solar plant is slowly taking shape. It's meant to generate one mega... | <urn:uuid:d7a40267-14c7-4bed-99dc-35ce2e09471f> | 3.078125 | 173 | News Article | Science & Tech. | 57.7675 | 1,602 |
Australia has one of the world's largest ecological footprints per capita, requiring 6.6 global hectares per person. Over 50% of Australia's footprint is due to greenhouse gas emissions, with the average household emitting around 14 tonnes of greenhouse gases each year.
Measure your ecological footprint to see how the ... | <urn:uuid:002c9e2f-fdbf-40e0-abfa-5e52348be2b5> | 3.578125 | 209 | Product Page | Science & Tech. | 30.880862 | 1,603 |
Time to give credit where credit is due: the 2007 Presidential Green Chemistry Challenge Awards are in, recognizing some very hard working EcoGeeks who are doing their part to make our world a better place. Winners this year have discovered a nanotechnology-based catalyst capable of producing hydrogen peroxide from ren... | <urn:uuid:d547c2d8-1fa8-45ca-8165-f30cfe1249cb> | 2.796875 | 252 | News (Org.) | Science & Tech. | 10.656492 | 1,604 |
Ecologists point to forests as important sinks for atmospheric carbon. But a new report suggests that climate change could induce environmental stresses that would chnge the role of forests into a net carbon source.
The report, titled “Adaptation of Forests and People to Climate Change – A Global Assessment,” was coord... | <urn:uuid:0156ffc2-c3e4-407c-a0b4-bfa9e75cbdaf> | 3.890625 | 321 | News (Org.) | Science & Tech. | 24.547222 | 1,605 |
Water from the 'tap' [like our 'Green-House-Gas' or GHG emissions] flowing into . . '
the 'bath' [like the global atmosphere], raises the level of the bath-water [like the rate of atmosphere GHG accumulation/concentration] . . . but, the 'bath' is also drained by . . . the 'plug-hole' [like the natural 'sinks for GHG' ... | <urn:uuid:36baadb4-ec9d-4af2-8ca5-d86cafde31e5> | 2.96875 | 850 | Knowledge Article | Science & Tech. | 38.733326 | 1,606 |
UK Germination Toolbox - about the database
The Millennium Seed Bank Partnership has successfully collected and stored seed samples from around 90% of the United Kingdom’s native seed plant species, as a hedge against extinction and as a conservation resource. The ‘missing’ species produce either no seeds at all; or se... | <urn:uuid:18c9526c-1895-4c2e-804e-a442f3f31d81> | 3.625 | 1,649 | Knowledge Article | Science & Tech. | 22.236137 | 1,607 |
References: CLtL p. 160
Edit History: V1 9 Sep 1988, David Gray (initial version)
V2 19 Sep 1988, David Gray (delete first alternative)
The OPTIMIZE declaration provides a way to tell the compiler how important
various qualities are in order to guide which optimizations are done.
There is another quality, however, that... | <urn:uuid:3b8f771d-44c3-49a1-812e-12c2b07fef78> | 2.53125 | 412 | Documentation | Software Dev. | 24.776247 | 1,608 |
Sometimes after an accept method has read some input from the user, it may be necessary to insert a modified version of that input back into the input buffer. The following two functions can be used to modify the input buffer:
Arguments: stream new-input
start end buffer-start rescan
Summary: Replaces the part of the i... | <urn:uuid:5a85e519-a243-4e87-bf4d-d1e98e5b31d8> | 2.5625 | 596 | Documentation | Software Dev. | 44.267946 | 1,609 |
Ancient Lizard Missing Front Limbs
Remains from a 95-million-year-old marine creature with nubs for legs is clarifying how some lizards shed their limbs as they crept through evolutionary time and morphed into slinky snakes.
Described in the current issue of the Journal of Vertebrate Paleontology, the snake-like lizard... | <urn:uuid:2180f703-0e56-4b1e-8b4a-ccf7838a1334> | 3.84375 | 647 | News Article | Science & Tech. | 45.261338 | 1,610 |
Fermilab scientists find evidence for significant matter-antimatter asymmetry
Batavia, Ill.—Scientists of the DZero collaboration at the Department of Energy’s Fermi National Accelerator Laboratory announced Friday, May 14, that they have found evidence for significant violation of matter-antimatter symmetry in the beh... | <urn:uuid:39b773f0-e015-4c3d-82d8-f87b7ad7d8f0> | 2.9375 | 933 | News (Org.) | Science & Tech. | 27.115155 | 1,611 |
In July of 2004 we deployed DORISS/PUP in the Sea Cliff Hydrothermal Field on Gorda Ridge.
High temperature fluids (~300 deg C) were exiting from a number of vents along the Sea Cliff Hydrothermal Field (above left). We collected spectra from the exiting fluid using both a stand-off optic behind a dome window (not show... | <urn:uuid:26e21330-9a17-43d3-8be0-3a3c5dfb5c25> | 2.5625 | 147 | Knowledge Article | Science & Tech. | 49.199222 | 1,612 |
Home > News > Nanotechnology holds key to longer life: Research
December 12th, 2007
Nanotechnology holds key to longer life: Research
American scientists seem to have found the secret to extending the lifespan of brain cells, thus spawning hope for a longer life.
A molecular biologist and a nanoscientist at the Univers... | <urn:uuid:f7eebfc2-feb2-454e-af25-541f8305be7b> | 2.515625 | 376 | Content Listing | Science & Tech. | -1.926818 | 1,613 |
derived smooth geometry
There are two important classes of algebraic groups whose intersection is trivial (the identity group): Linear algebraic groups and abelian varieties.
Any algebraic group contains a unique normal linear algebraic subgroup such that their quotient is an abelian variety.
An algebraic group is line... | <urn:uuid:6627de79-dc3e-4e95-8a77-87949ae04119> | 2.8125 | 582 | Knowledge Article | Science & Tech. | 45.737523 | 1,614 |
Princeton-led team finds secret ingredient for the health of tropical rainforests
Posted December 9, 2008; 09:00 a.m.
A team of researchers led by Princeton University scientists has found for the first time that tropical rainforests, a vital part of the Earth's ecosystem, rely on the rare trace element molybdenum to c... | <urn:uuid:d4bf9483-5912-46b6-89f3-db185f426d2d> | 3.609375 | 777 | News Article | Science & Tech. | 25.525257 | 1,615 |
Cooperating Comes Easy To Elephants
In a series of tests in Thailand, researchers learned that elephants can cooperate to solve a problem, as reported in Monday’s edition of Proceedings of the National Academy of Sciences.
“Elephants are socially complex,” lead researcher Joshua M. Plotnik, study leader from the Univer... | <urn:uuid:9f06b727-e343-48a6-af64-b0aff1cb6534> | 3.640625 | 648 | News Article | Science & Tech. | 48.507036 | 1,616 |
The report describes a strategy for monitoring, modeling, and research activities to support management decisions to improve water-quality conditions in the Mississippi River Basin, reduce hypoxia in the northern Gulf of Mexico, and improve conditions for
Vanadium and boron were detected at high and moderate concentrat... | <urn:uuid:f4ef0678-ba59-4748-bd04-09495c3d6a6e> | 2.75 | 309 | Knowledge Article | Science & Tech. | -1.959442 | 1,617 |
The genus Isoetes is easy to recognize, but the distinctions
between species are more challenging. Fortunately we have only
two species in Wisconsin, of the 24 species reported for North
America. The most reliable means of identifying the species of
Isoetes requires observation of the megaspores with a microscope.
Mega... | <urn:uuid:2a49bc1a-9f25-4da7-aba0-fcc8caafae10> | 3.265625 | 175 | Knowledge Article | Science & Tech. | 30.454476 | 1,618 |
- Carbohydrate composition
- Stereochemistry of sugar residues
- Polysaccharide linkage analysis
GC is the method of choice for glycosyl-residue identification (i.e., the sugar components that make up polysaccharides and oligosaccharides). Two basic derivitization techniques allow for the necessary volatilization and u... | <urn:uuid:b853db84-596a-489a-8339-bd6bd60efae9> | 2.609375 | 238 | Knowledge Article | Science & Tech. | -13.243167 | 1,619 |
Terra/MODIS Color Image of Copahue Eruption Plume Across South America
For the first time since 2000, Copahue is erupting, sending an ash plume across southern South America. So far, the eruption is following the same patterns as the activity that ran from July to October 2000. That activity started with phreatic (wate... | <urn:uuid:531a4ccd-c5e2-4850-bc78-faeee15054be> | 3.390625 | 384 | Personal Blog | Science & Tech. | 47.083548 | 1,620 |
In the heart of the Large Magellanic Cloud (one of the Milky Way’s many satellite galaxies), there lies a vast complex of gas called 30 Doradus. And inside that sprawling volume of space is the Tarantula Nebula, a star-forming region so huge it dwarfs even our own Orion Nebula. Thousands of stars are churning away in t... | <urn:uuid:1c889934-cab3-4687-91d5-26656dafb332> | 2.75 | 2,542 | Personal Blog | Science & Tech. | 63.976644 | 1,621 |
thr_suspend(3T) immediately suspends the execution of the thread specified by target_thread. On successful return from thr_suspend(), the suspended thread is no longer executing.
Once a thread is suspended, subsequent calls to thr_suspend() have no effect. Signals cannot awaken the suspended thread; they remain pending... | <urn:uuid:ec2bdd72-c883-4621-ab48-ce4591e57178> | 2.671875 | 265 | Documentation | Software Dev. | 45.279361 | 1,622 |
The tkinter.scrolledtext module provides a class of the same name which implements a basic text widget which has a vertical scroll bar configured to do the “right thing.” Using the ScrolledText class is a lot easier than setting up a text widget and scroll bar directly. The constructor is the same as that of the tkinte... | <urn:uuid:9e141dbe-0ac3-40ad-a9b1-cd37b5f5478f> | 2.703125 | 158 | Documentation | Software Dev. | 51.956317 | 1,623 |
An SMTP instance has the following methods:
If the hostname ends with a colon (":") followed by a number, that suffix will be stripped off and the number interpreted as the port number to use.
Note: This method is automatically invoked by the constructor if a host is specified during instantiation.
This returns a 2-tup... | <urn:uuid:9f2fcc7c-898f-4ab4-b47c-c39cebcaa7d8> | 2.625 | 588 | Documentation | Software Dev. | 49.740668 | 1,624 |
The three major operating systems used today are Microsoft Windows, Apple's Macintosh OS, and the various Unix derivatives. A minor irritation of cross-platform work is that these three platforms all use different characters to mark the ends of lines in text files. Unix uses the linefeed (ASCII character 10), MacOS use... | <urn:uuid:89787f62-14b1-4967-9555-b6fa1113a9f4> | 3.84375 | 257 | Documentation | Software Dev. | 41.155494 | 1,625 |
This module implements an interface to the crypt(3) routine, which is a one-way hash function based upon a modified DES algorithm; see the Unix man page for further details. Possible uses include allowing Python scripts to accept typed passwords from the user, or attempting to crack Unix passwords with a dictionary.
No... | <urn:uuid:62708ab8-96b3-462f-9482-87a7af429490> | 3.59375 | 352 | Documentation | Software Dev. | 45.562246 | 1,626 |
Smoothing the Bumps
A scientist could hardly be expected to be happy about finding a mistake in his work after he published it. But if you have to watch your research go down in flames, it may help to regard it as an offering on the sacrificial fire of scientific progress. In the case of “ocean cooling,” Willis has ple... | <urn:uuid:c73bddb0-5638-4050-adba-7af18ac03713> | 3.171875 | 899 | News Article | Science & Tech. | 36.727486 | 1,627 |
This map, based on data from the Moderate Resolution Imaging Spectroradiometer (MODIS), shows average aerosol amounts around the world for March 2012. An optical thickness of less than 0.1 ( palest yellow) indicates crystal clear sky with maximum visibility, whereas a value of 1 (reddish brown) indicates very hazy cond... | <urn:uuid:2762aaa0-125c-49a1-9352-720f6f9344d2> | 3.921875 | 1,158 | News (Org.) | Science & Tech. | 42.665227 | 1,628 |
KickSat to launch sprites into space
It’ll look like hundreds of postage stamps fluttering toward Earth — each an independent satellite transmitting a signal unique to the person who helped send it to space.
A Cornell-based project called KickSat is set to launch more than 200 of these tiny satellites, nicknamed “sprit... | <urn:uuid:d589faa7-6417-46a9-9ebc-ffea51fd1913> | 2.984375 | 468 | Personal Blog | Science & Tech. | 43.649631 | 1,629 |
Astronomers have observed in unprecedented detail the processes giving rise to stars and planets in nascent solar systems. The team was able to peer deeply into protoplanetary disks—swirling clouds of gas and dust that feed the growing star in its center and eventually coalesce into planets and asteroids to form a sola... | <urn:uuid:84c8cdab-2f19-4abe-82bd-7792c3e50bed> | 4.15625 | 238 | Truncated | Science & Tech. | 40.660529 | 1,630 |
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
Gordon P. Rands & Pamela Rands
ENVIRONMENTAL DEFENSE (ED) , an environmental advocacy group headquartered in New York, began ... | <urn:uuid:37f83397-698f-4dbb-8ba8-1b9a1c17124e> | 2.65625 | 270 | Truncated | Science & Tech. | 40.713584 | 1,631 |
A big question mark stands over Washington's efforts to deal with ocean acidification is money: How much will be needed and where it will come from?
A state panel, the first of its kind in the nation, discussed a wide range of draft recommendations Friday (July 20) at the University of Washington. Gov. Chris Gregoire a... | <urn:uuid:d9cfb6c3-a942-4ce5-89fe-e82f8ff3d2fb> | 2.71875 | 961 | News Article | Science & Tech. | 44.019591 | 1,632 |
A student (m = 63 kg) falls freely from rest and strikes the ground.
During the collision with the ground, he comes to rest in a time of 0.0200 s.
The average force exerted on him by the ground is +18500. N, where the upward direction is taken to be the positive direction.
From what height did the student fall? Assume ... | <urn:uuid:65477000-ac0d-4fd5-9923-939321bcddf1> | 2.65625 | 108 | Q&A Forum | Science & Tech. | 78.860959 | 1,633 |
Podcasts & RSS Feeds
Most Active Stories
Environment & Science
Tue May 8, 2012
Feds say they'll act quicker to release study on keeping carp out of Great Lakes
The federal government says it will speed up a decision on how to protect the Great Lakes from invasive species in the Mississippi River basin. The Obama admini... | <urn:uuid:60de67f7-3077-4911-8d0e-5115b741acf6> | 2.640625 | 322 | Content Listing | Science & Tech. | 56.821677 | 1,634 |
Contrary to Hollywood’s portrayal of gigantic man-eating sharks, the three largest species of shark spend their time peacefully roaming the ocean’s surface munching on the ocean’s smallest creatures. Basking Sharks, the second largest species of shark, cruise the seas in search of plankton, filtering up to 2,000 tons o... | <urn:uuid:193d0731-0e51-4550-9c1c-07d8b21d053c> | 3.84375 | 469 | Personal Blog | Science & Tech. | 45.40705 | 1,635 |
Whereas people use their eyes and ears to get information, cells rely on proteins that span their outer membranes to scan for chemical signals from the outside world. Now a biotech start-up plans to launch an international consortium to determine the three-dimensional crystal structures of 100 such membrane proteins, m... | <urn:uuid:a1d7058f-2e41-4b93-964f-d8911a3d413d> | 2.625 | 448 | News Article | Science & Tech. | 37.529948 | 1,636 |
Astronomers are reaching ever further back in time, seeking events from the earliest days of the universe. Now, the discovery of the farthest (and thus oldest) supernova ever seen is raising hopes that astronomers will soon detect the explosive deaths of the first stars to form after the universe's birth. These stars f... | <urn:uuid:a712c23a-254c-4b26-89cb-1348d8af1955> | 4.1875 | 983 | News Article | Science & Tech. | 47.621807 | 1,637 |
A year on the melting planet takes just 1.4 Earth days
While astronomers continue to rack up a list of exciting new exoplanet discoveries, some are simply more awesome than others. The crown jewel of the search for other planets would be an orb similar to Earth, perhaps even similar enough to support living beings. A n... | <urn:uuid:aba3e57f-fe18-4a2d-8f86-177521c20fc7> | 3.046875 | 317 | News Article | Science & Tech. | 58.719659 | 1,638 |
A 3 digit number is multiplied by a 2 digit number and the
calculation is written out as shown with a digit in place of each
of the *'s. Complete the whole multiplication sum.
When the number x 1 x x x is multiplied by 417 this gives the
answer 9 x x x 0 5 7. Find the missing digits, each of which is
represented by an ... | <urn:uuid:f3089b6d-6bb9-41dd-ba6a-02443ec43614> | 3.25 | 690 | Content Listing | Science & Tech. | 71.074286 | 1,639 |
An enormous triangular hole in the Suns corona was captured earlier today by NASAs Solar Dynamics Observatory, seen above from the AIA 211 imaging assembly. This gap in the Suns atmosphere is allowing more charged solar particles to stream out into the Solar System and toward Earth as well.
Normally, loops of magnetic ... | <urn:uuid:d1c2ac28-82c4-4286-8814-aaa3bcb02afe> | 3.84375 | 286 | News Article | Science & Tech. | 43.340171 | 1,640 |
Those working in science are accustomed to receiving emails starting with "dear sir/madam, please look at the attached file where I'm proving einstein theory wrong". This time it's a tad more serious because the message comes from a genuine scientific collaboration... As everyone knows by now, the OPERA collaboration a... | <urn:uuid:2d84e2d5-59d0-40dd-9416-6babe2a041f0> | 2.59375 | 1,328 | Personal Blog | Science & Tech. | 33.835646 | 1,641 |
Hugh Pickens writes writes "BBC recently asked physicist and Cambridge University professor Dave Ansell to draw up a balance sheet of the mass that's coming in to the earth, and the mass going out to find out if the earth is gaining or losing mass. By far the biggest contributor to the world's mass is the 40,000 tonnes... | <urn:uuid:faeaec14-2ee2-49f4-81a3-3ceb9a796a49> | 3.140625 | 360 | Truncated | Science & Tech. | 58.764368 | 1,642 |
Stability of martian water
"Liquid water can be stable against freezing and stable against boiling, but unstable with respect to evaporation. The situation is analogous to Earth's oceans. Liquid water on the surface does not freeze because temperatures are higher than the melting point, and it does not boil because the... | <urn:uuid:f127a3cd-f460-4856-a5b7-0c491cddb48d> | 3.140625 | 137 | Knowledge Article | Science & Tech. | 35.919423 | 1,643 |
The answer depends on the infrastructure that you are using. Generally, the best thing is to do nothing. I know this sounds weird, so let me explain. When the OS is talking to a NIC, it generally has at least one pair of RX/TX ring-buffers and, in case of commodity hardware, is likely talking to the device over PCIe bu... | <urn:uuid:bd1e995f-a69f-4830-ba0f-faa9e5aa7389> | 2.5625 | 887 | Q&A Forum | Software Dev. | 56.941383 | 1,644 |
Working with Data Types in Expressions (Reporting Services)
Data types represent different kinds of data so that it can be stored and processed efficiently. Typical data types include text (also known as strings), numbers with and without decimal places, dates and times, and images. Data can be stored using one data ty... | <urn:uuid:776c2134-a95d-4fc3-89f3-5e1fd2173718> | 3.34375 | 1,845 | Documentation | Software Dev. | 48.622856 | 1,645 |
New technique advances carbon-fiber composites.
A revised view of continental tectonics is emerging from the research of an MIT professor who has made the first statistical evaluation in the West of long-secret gravity-field data for a large section of the former Soviet Union.
Dr. Marcia K. McNutt of the Department of ... | <urn:uuid:e0c19b09-c970-465b-9e34-28c06e22a019> | 3.109375 | 1,269 | News Article | Science & Tech. | 38.843191 | 1,646 |
Tree of Life
This is a tree of life--a diagram that shows how different types of living things, or species, are related. If you follow the lines connecting any two species on the tree, you'll get an idea of how closely related they are. The longer the path is, the more distant the relationship. The 479 species listed o... | <urn:uuid:d9793264-e7aa-404d-b436-b6555ec8d06f> | 3.546875 | 216 | Knowledge Article | Science & Tech. | 52.626002 | 1,647 |
News Story - Climate Cycles and Million Year Old Ice
Date: 28 May 2009Dr Eric Wolff talks to SciencePoles - the scientific website of the International Polar Foundation.
Dr. Eric Wolff is the 2009 recipient of the prestigious Louis Agassiz Medal awarded by the European Geosciences Union (EGU). A veteran of six Antarcti... | <urn:uuid:f170e035-e1be-48b0-8b65-6492fe93544c> | 2.53125 | 228 | News (Org.) | Science & Tech. | 42.58886 | 1,648 |
Once you start to optimize your code, read about patterns, and so on, you realize it is an interesting idea using static data members
to keep a single copy of something you may use in all the instances of your class (instead of having a copy in each object).
Sometimes those static data members are very simple, like con... | <urn:uuid:3a16bb24-3187-4ff8-a1df-813304c7535b> | 3.234375 | 1,450 | Personal Blog | Software Dev. | 45.576678 | 1,649 |
This article explains a simple way of implementing digest protocol in C#. A sample application is provided which shows how it is calculated in a step by step manner.
In HTTP protocol for authentication, we use different types of protocols: basic, digest and Kerberos.
1. Basic Authentication
This is most unsecured becau... | <urn:uuid:bd334b2b-c3d4-4386-b8af-d6e3e90fffc5> | 3.359375 | 941 | Documentation | Software Dev. | 50.59384 | 1,650 |
Resistant spores of bacillus subtilis have spent 22 months in the 'EXPOSE-R' test container outside the International Space Station (ISS). For the first time during a long-duration mission, they were mixed with artificial meteorite dust and exposed to the harsh conditions of outer space. Scientists at the German Aerosp... | <urn:uuid:c9dd011d-043b-4977-a692-ba5657454647> | 4.1875 | 1,097 | Knowledge Article | Science & Tech. | 23.836664 | 1,651 |
Water Evaporated from Trees Cools Global Climate, Researchers Find
ScienceDaily (Sep. 14, 2011) — Scientists have long debated about the impact on global climate of water evaporated from vegetation. New research from Carnegie's Global Ecology department concludes that evaporated water helps cool Earth as a whole, not j... | <urn:uuid:03518dbf-b4fd-425f-9692-606d2af52def> | 3.609375 | 400 | Truncated | Science & Tech. | 28.781297 | 1,652 |
23rd July 1994, 11.55 UTC - received and processed at ESOC (Darmstadt)
MetOp is a series of three meteorological operational polar orbiting satellites, the first of which, MetOp-1 is the prototype. The instruments on MetOp will produce high-resolution images, vertical temperature and humidity profiles, and temperatures... | <urn:uuid:3c183b62-bc6b-44c3-a7d5-78453ce4b5ac> | 3 | 147 | News (Org.) | Science & Tech. | 28.951322 | 1,653 |
Search for extraterrestrials with your desktop computer
Despite all the reports of the rapidly shrinking globe—with modern technology like the Internet, wireless handheld computers, and satellite global positioning systems—the universe seems to get lonelier every day. The search for intelligent life in the universe con... | <urn:uuid:712046d5-6503-475c-aa73-27ce02868d6c> | 3.21875 | 738 | Knowledge Article | Science & Tech. | 34.817121 | 1,654 |
New Zealand's capital city lies within the earthquake-generating collision zone between two of the Earth's great tectonic plates, and sits on top of one of the zone's most active geological faults - the Wellington Fault.
The Wellington Fault forms distinctive landscape features running right through the central city. I... | <urn:uuid:c2194b69-727d-4f86-9eb1-b7a95200a51f> | 3.625 | 151 | Knowledge Article | Science & Tech. | 48.687805 | 1,655 |
Tropical Waves Characteristics
Interval/Period of 3-4 Days Between Waves
- Lasting from one week to several weeks
- Propagating at 10-15 KT
Wavelength of 2,000-2,500 Km
Extend Vertically Between SFC-5Km
A westward traveling tropical wave manifests quite well on the lower atmosphere. In the absence of satellite imagery,... | <urn:uuid:da0fb17d-4ede-42cd-a8aa-de894f4b95ed> | 3.328125 | 286 | Knowledge Article | Science & Tech. | 36.427526 | 1,656 |
Nereid was discovered in 1949 through Earth-based telescopes. Little is known about Nereid, which is slightly smaller than Proteus, having a diameter of 211 mi (340 km). The satellite's surface reflects about 14% of the sunlight that strikes it. Nereid's orbit is the most eccentric in the solar system, ranging from abo... | <urn:uuid:640e3d2a-53ee-41a9-9398-175795852fa7> | 3.828125 | 128 | Knowledge Article | Science & Tech. | 77.191318 | 1,657 |
1.Whales are the largest animals that have ever lived on earth and are the largest animals that live in the ocean. Whales are even bigger than the largest dinosaur. It is believed that millions of years ago, whales probably walked upon land. Their back legs disappeared and their front legs became flippers. Blue whales ... | <urn:uuid:83d854ce-eb56-491d-a675-c384f189d4e1> | 3.65625 | 876 | Listicle | Science & Tech. | 72.060353 | 1,658 |
An object the size of asteroid 2012 DA14 appears to hit Earth about once every 1,200 years, Yeomans said.
"There really hasn't been a close approach that we know about for an object of this size," he added.
On its close approach to Earth, it was predicted the asteroid would be traveling at 7.8 kilometers per second, ro... | <urn:uuid:c136d7e7-3b51-494d-afed-36caf176643d> | 3.859375 | 408 | News Article | Science & Tech. | 62.199211 | 1,659 |
Like Alaska's mighty Yukon, a broad river once flowed across Antarctica, following a gentle valley shaped by tectonic forces at a time before the continent became encased in ice. Understanding what happened when rivers of ice later filled the valley could solve certain climate and geologic puzzles about the southernmos... | <urn:uuid:00a1fb6d-3d38-422a-acaa-ee3e5395e692> | 3.46875 | 1,295 | Content Listing | Science & Tech. | 38.968747 | 1,660 |
by Yan Zhang-Princeton University
The 2008 Olympic Games in Beijing have focused attention on the problems of air quality in urban environments and will serve as an important platform for developing and testing new technologies and procedures for analysis and management of air quality problems. Regional decisions conce... | <urn:uuid:ffb455bb-1631-4101-92b3-6ed60997a9a1> | 2.78125 | 945 | Academic Writing | Science & Tech. | 12.417182 | 1,661 |
I'ts a matter of size
Quick intro movie about nanotechnology
Carbon nanotubes can be broken down biologically
A team of Swedish and American scientists has shown that carbon nanotubes can be broken down by an enzyme - myeloperoxidase (MPO) - found in white blood cells.
- Previous studies have shown that carbon nanotube... | <urn:uuid:e5e6939d-e93a-41d5-8956-fd391a4c2653> | 3.359375 | 464 | News (Org.) | Science & Tech. | 21.776353 | 1,662 |
Sending a submarine to the bottom of the ocean on Jupiter's icy moon Europa is the most exciting potential mission in planetary science, according to one prominent researcher.
Europa's seafloor may well be capable of supporting life as we know it today, said Cornell University's Steve Squyres, lead scientist for NASA's... | <urn:uuid:61b6b637-dd2c-444b-8fa2-0954e13ec9ec> | 2.890625 | 943 | News Article | Science & Tech. | 51.782905 | 1,663 |
The data types you have seen so far are all concrete, in the sense that we have completely specified how they are implemented. For example, the Card class represents a card using two integers. As we discussed at the time, that is not the only way to represent a card; there are many alternative implementations.
An abstr... | <urn:uuid:4a0df5e6-d1e2-41d7-8f44-77b24b016a93> | 4.03125 | 1,733 | Documentation | Software Dev. | 60.60727 | 1,664 |
Media Contact: Emma MacMillan ()|
Communications and External Relations
In Alaska's backyard
OAK RIDGE, Tenn.,
Nov. 23, 2011
Making well-informed computational models of an ever changing, vast Alaskan landscape presents challenges that Oak Ridge National Laboratory researchers are working to overcome.
Modeling the ever... | <urn:uuid:a7f04aa3-2b88-4345-854e-19deb5e11e93> | 3.21875 | 797 | News (Org.) | Science & Tech. | 22.600145 | 1,665 |
Almost all we know about the universe is derived from the observation of
photons. As astronomers have developed instruments to exploit new
regions of the electromagnetic spectrum, from radio waves to gamma rays,
fascinating new objects have been revealed. At very high energies,
however, the universe itself becomes opaq... | <urn:uuid:f1c80725-1b6e-46b2-b7d1-de486875ce11> | 3.421875 | 232 | Knowledge Article | Science & Tech. | 16.946806 | 1,666 |
A large Cold War supply of helium-3 has begun to rapidly run out, due to heavy demand from U.S. scientists who need the gas for neutron detectors and cryogenic experiments. Almost 60,000 liters of helium-3 were used in 2007 and 2008, compared to just 10,000 liters used annually about 10 years ago. A House subcommittee ... | <urn:uuid:ac778eef-bd3c-4d30-b530-7bd572865f89> | 2.609375 | 142 | Content Listing | Science & Tech. | 65.302931 | 1,667 |
Mar. 11, 2010 Distant galaxy clusters mysteriously stream at a million miles per hour along a path roughly centered on the southern constellations Centaurus and Hydra. A new study led by Alexander Kashlinsky at NASA's Goddard Space Flight Center in Greenbelt, Md., tracks this collective motion -- dubbed the "dark flow"... | <urn:uuid:10aa2468-ee8c-46e2-9623-27fa8711cfee> | 3.1875 | 1,022 | News Article | Science & Tech. | 45.849404 | 1,668 |
Some of school going kids uses Electricity and Magnetism related science projects Experiments in there school’s science fair. children’s always trying to know that what is a magnet or something about electricity.
Someone can make electricity and Magnetism Science Fair Projects Using Batteries, Balloons etc. these Elect... | <urn:uuid:060c7c0a-7914-4268-ba4d-692994040b5a> | 3.21875 | 116 | Truncated | Science & Tech. | 22.579167 | 1,669 |
More In This Article
Across two decades and thousands of pages of reports, the world's most authoritative voice on climate science has consistently understated the rate and intensity of climate change and the danger those impacts represent, say a growing number of studies on the topic.
This conservative bias, say some ... | <urn:uuid:5ce8478c-0c2e-4d15-bde4-fd6f24bffdfa> | 3.234375 | 689 | Truncated | Science & Tech. | 30.25576 | 1,670 |
The journal Science published a paper this week about the increase and spread of Dead Zones in the world oceans. These Dead Zones are created when large amounts of nutrients decompose and use up all of the oxygen in the water causing mass deaths (literally suffocation) of marine species. There are various causes for th... | <urn:uuid:d8135aa8-d8ac-4e98-a942-9c4571a50e14> | 3.03125 | 483 | Personal Blog | Science & Tech. | 38.377727 | 1,671 |
This species of dinoflagellate is a rare visitor to the Rhode River area. The salinity of the mid-Chesapeake Bay is usually too low to support D. accuminata. It has been known to cause toxic shellfish poisoning. The cells average 48u in length and 16u wide with an average total volume of 3.2x103 cubic microns. During l... | <urn:uuid:15de15c2-f85e-48b8-af07-9d2985160476> | 2.59375 | 130 | Knowledge Article | Science & Tech. | 60.709989 | 1,672 |
Air Pollution as Seen From the Skies
From Mt. Etna to China to the Sahara, these striking satellite images of air pollution are from both natural and man-made causes
- By Sarah Zielinski
- Smithsonian.com, April 20, 2010
Mount Etna, on the Italian island of Sicily, is Europe’s most active volcano, having erupted half a... | <urn:uuid:16399f08-cd5e-464e-b7dd-94873f60b037> | 3.140625 | 153 | Truncated | Science & Tech. | 37.703046 | 1,673 |
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Total Hits: 3254
Total Votes: 37 votes
Category: Java Script/Cookies and Sessions
Submitted on: 2008-03-13 11:22:08
Submitted By: Devesh Khanna
Description:A cookie is a way you can store some information about a user visiting your site. The information is stored ... | <urn:uuid:697eda4d-4934-4ffe-8539-2ca7e7022856> | 2.546875 | 114 | Product Page | Software Dev. | 28.598196 | 1,674 |
The getcontext() function accesses a different Context
object for each thread. Having separate thread contexts means that threads
may make changes (such as
getcontext.prec=10) without interfering with
Likewise, the setcontext() function automatically assigns its target to the current thread.
If setcontext() has not bee... | <urn:uuid:dd836b42-b587-4802-a366-4dc7592ec3bd> | 2.6875 | 253 | Documentation | Software Dev. | 43.943062 | 1,675 |
A century of comet data suggests a dark, Jupiter-sized
object is lurking at the solar system's outer edge and hurling
chunks of ice and dust toward Earth.
"We've accumulated 10 years' more data, double the comets we
viewed to test this hypothesis," said planetary scientist John Matese of the University of Louisiana.
"O... | <urn:uuid:4d3a4524-7f9d-4fa2-b60e-de75ec12f48e> | 3.984375 | 587 | News Article | Science & Tech. | 50.198772 | 1,676 |
The name Aculeata is used to refer to a monophyletic lineage of Hymenoptera. The word "Aculeata" is a reference to the defining feature of the group, which is the modification of the ovipositor into a stinger (thus, the group could be called stinging wasps). In other words, the structure that was originally used to lay... | <urn:uuid:0916bb06-9aab-424a-8c0d-ce812dbe24ad> | 3.765625 | 3,444 | Knowledge Article | Science & Tech. | 19.905964 | 1,677 |
The flash provides a way to pass temporary objects between actions. Anything you place in the flash will be exposed to the very next action and then cleared out. This is a great way of doing notices and alerts, such as a create action that sets flash[:notice] = "Post successfully created" before redirecting to a displa... | <urn:uuid:6f6879f3-791a-49d1-a968-a0c2a618311d> | 2.546875 | 292 | Documentation | Software Dev. | 52.004511 | 1,678 |
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.
2006 September 23
Explanation: Today, the Sun rises due east at the Equinox, a geocentric astronomical event that occurs twice a year. To celebrate,... | <urn:uuid:463725f5-6935-4098-b629-aa81a6f0a232> | 3.515625 | 254 | Knowledge Article | Science & Tech. | 42.104375 | 1,679 |
Quicksand and other non-Newtonian fluids share properties with both liquids and solids. Non-Newtonian fluids consist of tiny grains suspended in liquid, with the appearance of a solid or gel. Stand on quicksand and you will sink (though not as rapidly as movies and cartoons suggest). But strike it quickly and it will b... | <urn:uuid:bec751b6-db43-451c-be44-31f461c3f535> | 3.546875 | 891 | News Article | Science & Tech. | 39.004363 | 1,680 |
Early last week, I wrote about parallax and distance measurements. This is a follow-up post to that one.
Stellar parallax is very small, and thus correspondingly difficult to measure. The closest star has a parallax of 0.772 arc-seconds (that is nearly 1/4700 of a degree). That is a very tiny angle to measure, and so i... | <urn:uuid:dd7e790e-73c3-4f82-b82e-a22e49919f14> | 3.96875 | 1,691 | Personal Blog | Science & Tech. | 52.922019 | 1,681 |
I’ve read that July of 1916 was the sunniest month ever recorded in Chicago, logging 95 percent of possible sunshine. Did the sunshine recorders in use then follow use today’s standards?
--George Ballas, Morton Grove
Retired Chicago weather observer Paul Kubecka found that the instrument for measuring solar irradiance ... | <urn:uuid:789ece3b-a9a7-46e5-8602-2a4fbc74be84> | 3.25 | 181 | Personal Blog | Science & Tech. | 35.452337 | 1,682 |
December 11, 2012 | 2
If you have seen any of Peter Jackson’s movies, such as this week’s release of The Hobbit: An Unexpected Journey, then you have probably noticed the logo for the special effects company Weta Workshop, which works on most of the director’s New Zealand–based projects. The workshop is named after a b... | <urn:uuid:5cdbd2c8-b9c9-436d-9d77-97b377aef321> | 3.0625 | 671 | News Article | Science & Tech. | 44.741295 | 1,683 |
Model output file format:
Year DOY Hour Min Sec Lat[deg] Lon[deg] NmF2[1/cm3]
Here DOY is day of year, andNmF2 [1/cm3] is maximum electron density from either LEO satellites or ISRs. Lat [deg] and Lon [deg] for NmF2 from ISRs are geographic latitude and longitude of ISRs. For NmF2 from LEO radio occultation measurement... | <urn:uuid:c42a276d-55db-4601-b143-ea1fdd1d239a> | 2.609375 | 138 | Documentation | Science & Tech. | 49.683725 | 1,684 |
Scientists on the lookout for utility-scale, high efficiency batteries are developing new “flow”systems that that store energy more effectively than lead-acid or lithium-ion batteries, but there’s a catch. The flow batteries in operation now are about the size of a house and they cost more than the equivalent in lithiu... | <urn:uuid:a2dbd794-9e42-43be-b3fb-1b310a1e0cea> | 3.203125 | 700 | News Article | Science & Tech. | 29.320834 | 1,685 |
This section discusses internal locking; that is, locking
performed within the MySQL server itself to manage contention
for table contents by multiple sessions. This type of locking is
internal because it is performed entirely by the server and
involves no other programs. External locking occurs when the
server and oth... | <urn:uuid:e1748387-5984-4d41-a764-2069ab2c529f> | 3.03125 | 1,344 | Documentation | Software Dev. | 41.36039 | 1,686 |
Date of this Version
Urban-suburban Canada geese (Branta canadensis) create nuisance problems at their foraging sites by littering them with feces. An ecological approach to the problem involves inducing the geese to use alternate foraging sites by reducing the attractiveness of problem sites. This can be accomplished ... | <urn:uuid:721fa7f7-2dd1-44ee-a8f8-8c72ee00c939> | 3.59375 | 180 | Knowledge Article | Science & Tech. | 21.309919 | 1,687 |
SkySails has invented a method that could cut down on ‘fuel consumption, costs and carbon footprints’ for commercial ships by developing giant kites. The Raw Story reports:
The blue-hulled vessel would slip by unnoticed on most seas if not for the white kite, high above her prow, towing her to what its creators hope wi... | <urn:uuid:98927218-2f28-41e4-964f-e184fabbb557> | 3.0625 | 257 | News Article | Science & Tech. | 43.568645 | 1,688 |
The efficiency of any application depends on how well memory and garbage collection are managed. The following sections provide information on optimizing memory and allocation functions:
Tracing Garbage Collection
Other Garbage Collector Settings
Tuning the Java Heap
Re-basing DLLs on Windows
Monitoring the Garbage Col... | <urn:uuid:4c7ab6b5-fa80-4636-9639-96c43e580b47> | 3.015625 | 901 | Documentation | Software Dev. | 38.161999 | 1,689 |
Some of Palawan’s reefs are sad reflections of warming ocean temperatures. White skeletons are all that remain of previously colorful and varied coral reefs around the island. The phenomena is known as ‘coral bleaching’, caused by too warm of ocean temperatures.
Scientists cited in the article below hold out hope for t... | <urn:uuid:5e163826-772f-4baf-9ef3-7b93d366dd8b> | 3.65625 | 568 | Personal Blog | Science & Tech. | 38.168048 | 1,690 |
Palm Springs, Calif.— The U.S. Fish and Wildlife Service issued a final rule Wednesday protecting Casey’s June beetle as an endangered species and designating 587 acres of critical habitat for it in Riverside County, Calif. Known only from the Palm Canyon area of Palm Springs, the beetle is critically endangered by urb... | <urn:uuid:3a8a1f7f-61a3-4b80-8315-ed2602ff274b> | 3.234375 | 498 | News (Org.) | Science & Tech. | 39.287949 | 1,691 |
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Although terahertz (THz) radiation was first observed about 100 years ago, this portion of the electromagnetic spectrum at the boundary between the microwaves and the infrared has been, for a long time, rather poorly explored. This situation changed with the rapid development of coherent THz source... | <urn:uuid:26814bd7-921e-4b4e-8233-3aa4ad415a40> | 2.8125 | 183 | Truncated | Science & Tech. | 16.606523 | 1,692 |
Researchers have created a synthetic "tree" - a centimeter-sized hydrogel with nanopores that can pull water just like real trees pull moisture up their tall trunks.
Optical micrograph image of a synthetic tree. Credit: Tobias Wheeler.The scientists, led by Abraham Stroock of Cornell University, explained that this pro... | <urn:uuid:9a1d5afb-b317-4097-b89a-ee5a3ad5c8db> | 4.34375 | 451 | News Article | Science & Tech. | 42.637549 | 1,693 |
Most Active Stories
Around the Nation
Wed August 29, 2012
Isaac's Size, Speed Help It Pack A Heavyweight Punch
Originally published on Fri October 26, 2012 11:28 am
Isaac might not be in the same league as Hurricane Katrina seven years ago, but the latest storm to batter Louisiana's Gulf Coast is punching above its wei... | <urn:uuid:2f0b23ab-eacb-499f-98c4-b51031fe9a30> | 2.765625 | 798 | News Article | Science & Tech. | 53.771471 | 1,694 |
|This article appears in the January 23, 2004 issue of Executive Intelligence Review.
The Mars Exploration Rovers begin the intensive study of the planet Mars, which can lay the basis for its human exploration in the future. Marsha Freeman reports.
Spirit Rover Gets Ready To
Follow the Water on Mars
A highly complex an... | <urn:uuid:afc7a3a6-7df3-43b8-8c6f-203b117f8c76> | 3.421875 | 3,642 | Truncated | Science & Tech. | 38.244262 | 1,695 |
Given the twin demands of controlling climate change and ensuring the world's future energy needs are met, "the first question to ask is not 'how do we reduce emissions?' " says Roger Pielke Jr., a science-policy specialist at the University of Colorado at Boulder, the author of the critique. Instead, he says, the ques... | <urn:uuid:8b0c7e96-07ff-40e2-bb08-4995cf601fcb> | 2.9375 | 346 | News Article | Science & Tech. | 40.46 | 1,696 |
Nov 10, 2009, 6:09 AM
Post #3 of 7
Re: [DivyaG] 'constant' in perl
[In reply to]
Can we define any variable as constant in perl (just like const in C and Java), so that its value cannot be modified throughout the program?
There are two techniques to get unmodifiable values in Perl: `use constant;` and `use Readonly;`
T... | <urn:uuid:9d2ca47b-cb5d-4f04-ad58-90f004e2d4a1> | 2.703125 | 358 | Comment Section | Software Dev. | 66.384231 | 1,697 |
A successful NASA flight test Monday demonstrated how a spacecraft returning to Earth can use an inflatable heat shield to slow and protect itself as it enters the atmosphere at hypersonic speeds.
The Inflatable Re-entry Vehicle Experiment, or IRVE, was vacuum-packed into a 15-inch diameter payload "shroud" and launche... | <urn:uuid:21e0a41d-20f1-46f4-8ac4-ec73d025208c> | 3.203125 | 545 | News Article | Science & Tech. | 43.023951 | 1,698 |
Chaos, like next year’s weather, is anything but predictable. So results appearing in the 8 October print issue of PRL may seem paradoxical: researchers claim that for the first time, two lasers have been synchronized so that one can anticipate the chaotic fluctuations in the other. Some experts are skeptical of the re... | <urn:uuid:8011ffe5-2ebf-4135-a85f-8d69d02cabcf> | 3.765625 | 567 | News Article | Science & Tech. | 32.773549 | 1,699 |