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In Japan, engineers have laid a power line that can connect reactor 2 of the Daiichi facility to the off-site power grid, the International Atomic Energy Agency reported. Workers are working to reconnect the power to reactor 2 after they complete spraying water into the reactor 3 complex to provide additional cooling t... | <urn:uuid:71d0ca3d-ac55-4b48-9a0c-5d9bf2d85365> | 2.9375 | 648 | Personal Blog | Science & Tech. | 42.62098 |
|[ To Contents ]|
Isotropic Vector Matrix
The isotropic vector matrix has already been introduced; we just didn't know its name.
If you can visualize the space-filling array of spheres in "cubic packing" described in the previous chapter, that's half the picture. Now, imagine interconnecting the centers of all spheresa... | <urn:uuid:9e158552-6b2b-4168-b157-1d08592b4fc9> | 3.328125 | 1,026 | Academic Writing | Science & Tech. | 31.273684 |
The World Meteorological Organization (WMO) released a statement on the global climate in 2006 on December 14 2006.
Unfortunately, with respect to reporting on surface temperature trends, the Statement perpetuates the use of surface temperature trends as the metric to assess global warming (or cooling) [i.e. why not, a... | <urn:uuid:fb5ffa5b-a83d-468f-be8f-4e496707be3b> | 3.625 | 1,904 | Academic Writing | Science & Tech. | 48.84354 |
Up to this point, I've shown you various comparison functions without really saying much about the differences between them. In this chapter, I'll (finally) tell you about how and why the comparison functions differ and offer some guidelines for their proper use.
Lisp has a core set of comparison functions that work on... | <urn:uuid:1d3e55e6-7b93-4baf-a089-280b4968b100> | 3.734375 | 681 | Documentation | Software Dev. | 45.174583 |
Educators' Collection of Resources on Microbial Life Exposed to High Levels of Radiation
This microbe, called Halobacterium, may hold the key to protecting astronauts from one of the greatest threats they would face during a mission to Mars: space radiation. The harsh radiation of interplanetary space can penetrate ast... | <urn:uuid:3601568c-91c2-45f7-90c0-7a1c64e02406> | 3.625 | 201 | Content Listing | Science & Tech. | 20.29575 |
Iteration is at the heart of agile development practices. In an agile project you do something, measure your progress, and then use the feedback from the measurement to figure out what to do next. This cycle allows you to follow the Agile Manifesto value Responding to change over following a plan by providing for point... | <urn:uuid:fa20a799-9a8b-4862-aab2-e6631a333050> | 2.78125 | 800 | Knowledge Article | Software Dev. | 38.25174 |
Posted in: Press: Environmental
Relevant tags: drought, rivers, water
Water, rivers and climate change are inextricably linked, and are ringing warning bells across the world. More than ever before, the global water situation is uniting people in hardship, with billions being spent to protect water supplies, livelihood... | <urn:uuid:00096146-4804-4ef8-a29d-41d206c41261> | 3.140625 | 1,406 | Truncated | Science & Tech. | 24.23292 |
› View Now
Wildfire and Pine Beetles
Wildfire and Pine Beetles
Narration: Jefferson Beck
[ music ] [ music ] Across the Rocky Mountain West, red hues dot the forest. But these aren't the colors of autumn. These trees are dying, under attack by an unseen adversary - the mountain pine beetle. Mountain pine beetles are na... | <urn:uuid:5c3e388b-09f7-46db-a018-1b98eaf8a11e> | 3.734375 | 981 | Audio Transcript | Science & Tech. | 59.812733 |
Organisms that live in in the water column or in a suitable atmosphere and drift or float in that environment, being incapable of swimming against the current or wind. A world that has life and bodies of water of any kind will have plankton. On garden worlds, larger or more actively moving organisms in the environment ... | <urn:uuid:3127216b-e06b-429e-aea7-ff2b0af57446> | 3.28125 | 473 | Knowledge Article | Science & Tech. | 20.11069 |
The atomic nucleus shown in the top half of this picture is carbon-14. The 14
C nucleus has 6 protons plus 8 neutrons, giving it an atomic mass of 14.
Click on image for full size
Original artwork by Windows to the Universe staff (Randy Russell).
Carbon-14 is an isotope of the element carbon. All carbon atoms have 6 pr... | <urn:uuid:2c8c9e85-9bc3-4282-8963-f3bed12c06a5> | 3.921875 | 664 | Knowledge Article | Science & Tech. | 55.119476 |
I understand what the enzyme ATP synthase does, but I'm not exactly sure how it does it. I've heard that it uses rotary catalysis, but how exactly does this work? How is the energy from the H+ ion harnessed, turned into mechanical energy, and then finally into the chemical energy stored in ATP? Why does the spinning of... | <urn:uuid:2b4b148b-c511-4ee2-bda2-f504541b4c3f> | 2.890625 | 462 | Q&A Forum | Science & Tech. | 49.013825 |
You can’t go for a month without seeing a claim that some new discovery has rewritten evolutionary history. If headlines are to be believed, phylogeny – the business of drawing family trees between different species – is an etch-a-sketch science. No sooner are family trees drawn before they’re rearranged. It’s easy to ... | <urn:uuid:25513afd-86b7-4cfd-a477-0492e8530ea4> | 3 | 215 | Personal Blog | Science & Tech. | 37.978569 |
When the drugs we use to heal us create unintended monsters.
The deep sea earthquake and resulting Tsunami that killed hundreds of thousands of people in 2004 was a natural disaster of epic proportions. There’s no way it could have been avoided, the tectonic plates that caused the quake had simply reached their breakin... | <urn:uuid:88ddea0f-982e-44c7-860f-ed5032c5cdb5> | 2.90625 | 214 | Content Listing | Science & Tech. | 62.828689 |
Science Fair Project Encyclopedia
|Formula weight||61.8 amu|
|Melting point||Decomposes at 442 K (169 °C)|
|Density||1.4 ×103 kg/m3|
|Solubility||5.7 g in 100g water|
|S0gas, 1 bar||295.23 J/mol·K|
|Ingestion||Toxic. Vomiting and diarrhea in small doses, larger doses may be fatal.|
|Inhalation||May cause irritation.|
|... | <urn:uuid:f2ed66b4-bc29-40d1-ac83-abe3ac625c1c> | 3.34375 | 435 | Knowledge Article | Science & Tech. | 53.102158 |
Science Fair Project Encyclopedia
- This article is about flavor, the sensory impression. There is another article on Flavor (particle physics) for the particle property.
Flavor (or flavour) is the sensory impression of a food or other substance. It is determined by the three chemical senses of taste, olfaction (smell)... | <urn:uuid:0b164637-6541-4e5a-a2fd-d24a5e852b71> | 3.6875 | 120 | Knowledge Article | Science & Tech. | 38.385055 |
Common Lisp the Language, 2nd Edition
Throughout this chapter the notation S is used to denote the jth element of the series S. As in a list or vector, the first element of a series has the subscript zero.
The # macro character syntax #Zlist denotes a series that contains the elements of list. This syntax is also used ... | <urn:uuid:968c771b-828e-4b30-b3c7-fe5053bdae9c> | 3.765625 | 227 | Documentation | Software Dev. | 69.401364 |
Copyright © 2007 Dorling Kindersley
No one has ever seen a living dinosaur, so scientists rely on fossil remains to provide clues to how these ancient reptiles looked and behaved when they were alive. Scrappy evidence in the past meant the early dinosaur experts had certain beliefs about dinosaurs we now know to be inc... | <urn:uuid:bcf39de0-5e95-439a-8a0a-daf6255a6e70> | 4.28125 | 450 | Knowledge Article | Science & Tech. | 45.792775 |
50-Year Study Shows Coral 'Clocks' Unreliable
by Brian Thomas, M.S. *
Some biologists like to say that massive coral reefs represent more than 100,000 years of growth, supposedly nullifying the Bible's account of a world that is only thousands of years old. However, many known factors can affect coral reef growth rates... | <urn:uuid:071318c8-b42f-47bc-aa06-4c0676b0fee9> | 3.4375 | 807 | Truncated | Science & Tech. | 62.032881 |
Question: Thousands of animals are killed on our roads every year, so road kills must exert a selective pressure on animal populations. Is there any evidence that animals are developing road sense?
Answer: Despite the increase in traffic, over the past few years I have seen far fewer dead hedgehogs on the roads. I've a... | <urn:uuid:db7b165f-2086-4e14-b160-ed9053fd09c3> | 3.03125 | 205 | Truncated | Science & Tech. | 52.386402 |
SOMETIMES you just have to say it like it is: new wording for tornado warnings may have saved lives.
More than 100 tornadoes struck the US Midwest last weekend - the most severe outbreak so far this year. But the death toll of six people was very low compared with similar outbreaks in recent years.
That seems in part t... | <urn:uuid:45a7189d-c74a-4acf-8475-6a3df816cc49> | 2.75 | 562 | Comment Section | Science & Tech. | 54.832489 |
Search our database of handpicked sites
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Variable Scope in SQL Procedure is used to define the scope of a variable used in SQL.
Understand with Example
The Tutorial illustrates an example from Variable Scope in SQL Procedure.
For sake of your understanding :
Local variables - These variable are declared inside a inner block and cannot be referenced by outside... | <urn:uuid:ada0f372-faa5-4b9d-b32b-50baed1edf35> | 3.515625 | 343 | Documentation | Software Dev. | 47.434817 |
Chemistry in its element: compounds
MP3 Download (3452k)
Introducing Chemistry in its element series two: distilling the compounds that count. Each week a leading scientist or author tells the story behind a different compound
Chemistry in its element - Sulfur mustard
Distilling the compounds that count, you're listeni... | <urn:uuid:e80b588d-09b0-4056-9455-ab58bc8c15b0> | 3.328125 | 1,461 | Truncated | Science & Tech. | 48.26362 |
Introduction to Laser Principles
word "laser" is an acronym for Light Amplification by Stimulated Emission
of Radiation. The easiest laser model to understand is the two level system.
In a two level system, the particles have only two availible energy levels,
separated by some energy difference which is typically refer... | <urn:uuid:b851d309-75bc-44e3-b158-1b1637c6f822> | 3.984375 | 548 | Tutorial | Science & Tech. | 32.110205 |
These pictures show the Sun in ultraviolet "light". The left picture was at "solar min". The right picture was at "solar max". This UV wavelength (28.4 nanometers) helps scientists see certain parts of the Sun's atmosphere. The UV "light" is given off by iron at a temperature of two million kelvins.
Images courtesy of ... | <urn:uuid:1b03223f-dc7c-4bfd-9b12-344a459474ce> | 2.875 | 83 | Knowledge Article | Science & Tech. | 64.927458 |
In the next few months, I will be writing about climate and climate change. My purpose is to discuss the various ways we influence climate both locally and globally. The plan is to start locally, with the effect of cities on climate. I will follow with a discussion of our effects on regional climate, and then close wit... | <urn:uuid:bb45fcdd-efe4-4b03-8e97-d43830d6e1a5> | 2.84375 | 295 | Personal Blog | Science & Tech. | 48.029426 |
Researchers using a decade of satellite data on fires and a suite of climate models have produced the first thorough global estimate of changes in the frequency of fires in the world’s forests under greenhouse-driven global warming. There’s ample uncertainty but the study, published today in the peer-reviewed online jo... | <urn:uuid:bba9207a-5524-48b0-bfa2-11c16e3be396> | 3.453125 | 1,044 | Comment Section | Science & Tech. | 27.302937 |
A proof is a mathematical argument used to verify the truth of a statement. This usually takes the form of an orderly series of statements based upon axioms. When a statement has been proven true, it is considered to be a theorem.
Proofs generally use an implication as the statement to prove. The goal of a proof is to ... | <urn:uuid:38a28ad9-a3df-41f8-b7a0-962994e8339d> | 4.75 | 453 | Knowledge Article | Science & Tech. | 45.407703 |
List comprehensions are a nice feature in Python. They are, however, just syntactic sugar for for loops. E.g. the following list comprehension:
def f(l): return [i ** 2 for i in l if i % 3 == 0]
is sugar for the following for loop:
def f(l): result = for i in l: if i % 3 == 0: result.append(i ** 2) return result
The i... | <urn:uuid:41615aa6-3c31-45ac-bb0b-2a67cff4da81> | 2.96875 | 794 | Personal Blog | Software Dev. | 77.479819 |
Copyright © University of Cambridge. All rights reserved.
The builders have dug a hole in the ground to be filled with concrete for the foundations of our garage. The shape is designed to avoid subsidence that might be caused by the roots of some very large trees nearby. The hole is perfectly symmetrical with vertical ... | <urn:uuid:8741120d-e035-4177-b398-cb10cbc6afa2> | 3.515625 | 187 | Q&A Forum | Science & Tech. | 67.201536 |
Crick and Watson's first attempt to solve the structure of DNA in the fall of 1951 was brief and unsuccessful. Thinking like
Pauling, they quickly came up with a model of three DNA strands wound around each other in a helix, phosphates at the core.
It seemed to fit the density data, the x-ray data was compatible with a... | <urn:uuid:bcaebc9a-cd36-461f-bc68-dda4f8cc2898> | 4.0625 | 426 | Academic Writing | Science & Tech. | 45.406285 |
Though the sizes are not to scale, the Sun and planets of the inner
solar system are shown
in this illustration, where each red dot
represents an asteroid.
New results from NEOWISE, the
infrared asteroid hunting
portion of the
are shown on the left compared to
old population projections of mid-size or larger
from surve... | <urn:uuid:09f75edf-0ffe-4d28-9c35-88a8616aed2a> | 4.03125 | 233 | Knowledge Article | Science & Tech. | 30.154227 |
What's a database? We can use pretty much anything as a database, as long as it allows us to store our data and retrieve it later. There are many different kinds of databases. Some allow us to store data and retrieve it years later; others are capable of preserving data only while there is an electricity supply. Some d... | <urn:uuid:a1c7b3e2-1858-4ca8-bfcb-b7cf7625fa00> | 3.09375 | 506 | Knowledge Article | Software Dev. | 36.571792 |
For conservationists, it is often a case of two steps forward, one step back. Compare the upturn in fortune for the forests of Borneo with the depressing tale of state government intervention in Mato Grosso, central Brazil.
Since 1996 Borneo has been haemorrhaging 2 million hectares of forest a year to loggers, forest ... | <urn:uuid:f02c9c26-8d15-4229-a836-233a6a8f8ca8> | 3.34375 | 223 | Truncated | Science & Tech. | 48.240711 |
The story of how a fossil promised to revolutionize evolutionary theory, yet was not what it seemed.
Bear Dogs of the Amphicyonidae
A short review of the infamous amphicyonids, better known as the ‘bear dogs’, including a look at their place in ecosystems, hunting, evolution and extinction as well as some other details... | <urn:uuid:2138b340-1d7f-4f21-81da-190b4acb4f4f> | 2.90625 | 434 | Content Listing | Science & Tech. | 26.619923 |
When direct sunlight strikes falling rain, a rainbow is seen at a point directly opposite the Sun. A double rainbow occurs when some of the light entering the raindrop is refracted into its component colors, reflected off the back interior wall of the drop, and refracted again as it exits the drop.
Click on image for f... | <urn:uuid:4328e80c-6674-454b-830f-5fb87e67a93a> | 3.8125 | 649 | Content Listing | Science & Tech. | 58.005332 |
Sand Dunes - How climate change is altering the landscape in the desert Southwest:Human induced climate change is caused by the release of green house gases, including carbon dioxide (CO2), methane (CH3), nitrous oxide (N2O), as well as rapid deforestation. Although climate change is a global phenomenon, the regional i... | <urn:uuid:8b99e8aa-b1ea-4908-a708-7941bcf2186e> | 3.734375 | 765 | Knowledge Article | Science & Tech. | 44.335428 |
It was unseasonably, strangely warm yesterday, hitting a reported high of 68 (69 at the airport) in the middle of December. That’s 12 degrees warmer than the average Atlanta high for Dec. 9 of 56 degrees.
Now, if I were to adopt the debating technique of certain global-warming skeptics, I might seize upon yesterday’s f... | <urn:uuid:b4b876f2-9d46-41b1-9424-b405f147fe7d> | 2.921875 | 1,024 | Personal Blog | Science & Tech. | 55.567921 |
Sorting algorithm is an algorithm that puts elements of a list in a certain order . The most-used orders are numerical order and lexicographical order.
Sorting algorithm classification:
Stability-Maintaining relative order of records with equal keys.
Methods applied like insertion,exchange,,selection,merging etc.
Sorti... | <urn:uuid:327ea02e-6e3e-49b8-a33b-66b54b88ca9e> | 4.21875 | 630 | Tutorial | Software Dev. | 52.916667 |
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Interactive Math Programs
Course Topic(s): Ordinary Differential Equations | Modeling, ODE | Numeric Methods | Graphic Methods
A collection of Java applets for a number of topics. (All have a good parser, but many are not very visual and none have a description of the algorithm.): Euler data ... | <urn:uuid:723e0b9c-aaaa-4fa1-9646-ebf2c0049efc> | 2.984375 | 265 | Content Listing | Science & Tech. | 39.945304 |
Measuring Vertical Profiles
Molluscan Fisheries staff using standard surveying techniques to measure the elevation, width, and shape of the beach. Measurements begin 3 meters into the vegetation of the upper beach (as seen in this photo) and continue at regular intervals until the person bearing the stadia rod is below... | <urn:uuid:4e2c5bcf-0798-4146-94f0-908f0f3374ea> | 3.1875 | 97 | Knowledge Article | Science & Tech. | 23.366804 |
What would be the smallest number of moves needed to move a Knight
from a chess set from one corner to the opposite corner of a 99 by
99 square board?
With one cut a piece of card 16 cm by 9 cm can be made into two pieces which can be rearranged to form a square 12 cm by 12 cm. Explain how this can be done.
A cylindric... | <urn:uuid:ae9f70a9-4148-41d4-b88a-990c294c28a9> | 3.015625 | 125 | Q&A Forum | Science & Tech. | 75.975491 |
sciencehabit writes "Like all invisible things that are only partly understood, black holes evoke a sense of mystery. Astronomers know that the tremendous gravitational pull of a black hole sucks matter in, and that the material falling in causes powerful jets of particles to shoot out of the hole at nearly the speed o... | <urn:uuid:bad2dd1e-77a3-446a-a4c7-8458c2fe6189> | 3.109375 | 3,353 | Content Listing | Science & Tech. | 37.844342 |
In astronomy, axial tilt is the angle between a planet's rotational axis at its north pole and a line perpendicular to the orbital plane of the Planet. It is also called axial inclination or obliquity. The axial tilt of Earth is the cause of seasons like summer and winter on Earth.
Axial tilt of major celestial bodies ... | <urn:uuid:0ae5672c-505d-4eef-a189-c807b6547932> | 4.125 | 405 | Knowledge Article | Science & Tech. | 62.742049 |
Research by Peter Capak, C. L. Carilli, N. Lee, T. Aldcroft, H. Aussel, E. Schinnerer, G.W. Wilson, M. S. Yun, A . Blain, M. Giavalisco, O. Ilbert, J. Kartaltepe, K.-S. Lee, H. McCracken, B. Mobasher, M. Salvato, S. Sasaki, K.S. Scott, K. Sheth, Y. Shioya, D. Thompson, M. Elvis, D. B. Sanders, N. Z. Scoville, Y.Tanaguc... | <urn:uuid:34fb4375-f133-4ee0-8958-2718542a0d15> | 2.96875 | 671 | Academic Writing | Science & Tech. | 55.864957 |
Coccoliths in the Celtic Sea
As the basis of the marine foodchain, phytoplankton are important indicators of change in the oceans. These marine flora also extract carbon dioxide from the atmosphere for use in photosynthesis, and play an important role in global climate. Phytoplankton blooms that occur near the surface ... | <urn:uuid:ce7c4240-34d1-4a34-86fb-4a2d0ba79d8d> | 3.984375 | 518 | Knowledge Article | Science & Tech. | 32.599627 |
Simply begin typing or use the editing tools above to add to this article.
Once you are finished and click submit, your modifications will be sent to our editors for review.
secondary effects of radiation
...similarly produced, can experience a variety of reactions even before neutralization occurs. Such an ion may fra... | <urn:uuid:f432d402-09e7-4435-a2a0-33f48c6a0a41> | 3.40625 | 216 | Truncated | Science & Tech. | 45.609643 |
High Science Inside the Belly of the Alps
- Story Resources
- Back to Main Page »
- The Promise of Underground Geological Repositories
- Photo Gallery
- Full Waste Coverage
- Grimsel Test Site
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- Managing High Level Waste
- Public Opinion [pdf]
- IAEA Centres of Excellence
- Waste Profiles by Co... | <urn:uuid:624106fe-6ed1-4de8-8941-7d9b07a5911e> | 3.15625 | 1,942 | Knowledge Article | Science & Tech. | 37.124194 |
This chapter is focused on optical (i.e. visible and infrared) interferometry with in mind the comparison of this technique with radio interferometry developed in the other chapters of this book. The objective is to give some keys to understand how optical interferometers works. I present first a small history of optic... | <urn:uuid:57c79f47-bf9f-4f09-bf03-f09b4685fc31> | 4.25 | 1,361 | Academic Writing | Science & Tech. | 42.489926 |
Highlights of our Work
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Mechanical forces are everywhere in human life. Strong forces power machines and cars, our body's forces let us labor and move, soft forces are sensed through touch, even softer ones through hearing. Forces are also ubiquitous in the living cell, driving its molecular machines a... | <urn:uuid:b16e1702-05a8-47b4-95d7-4f5b51eb7600> | 3.515625 | 308 | Content Listing | Science & Tech. | 20.522662 |
One of the goals of this column is to make it more clear what astronomers actually do all day (or night) long. As I have been discussing, one of the things that I do frequently is writing proposals to convince other astronomers to let me use their telescope. The once-a-year proposals for use of the Hubble Space Telesco... | <urn:uuid:ca38845b-a1bc-4211-b0b6-9929b6046a35> | 2.890625 | 2,549 | Personal Blog | Science & Tech. | 30.514247 |
The Hubble Space Telescope has inadvertently caught 14 runaway stars speeding through dense interstellar gas. The discovery may shed light on whether the turbulence they create could prevent surrounding gas from collapsing into new stars.
Astronomers led by Raghvendra Sahai of NASA's Jet Propulsion Laboratory had been ... | <urn:uuid:3ba303bc-c781-4311-8efe-3d05e0685ee2> | 3.484375 | 994 | Comment Section | Science & Tech. | 62.967431 |
Do we have a little Neanderthal in us? That's not a reference to your behaviour at the end-of-year office party, but to the genes of our extinct cousins. With the imminent publication of the genome sequence of Homo neanderthalis, that question may finally be answered.
So far no one has uncovered evidence of any cross-s... | <urn:uuid:5386037e-7ccd-4495-9fcc-473273015429> | 3.59375 | 221 | Truncated | Science & Tech. | 49.907818 |
What happens in your brain when you get lost or forget something? Johns Hopkins University neuroscientist Amy Shelton believes she can find the answer. With funding from the National Science Foundation, she's testing human spatial recognition. Study subjects learn and recall their way around a virtual maze while an MRI... | <urn:uuid:6ec87e00-b349-44ee-a7b4-66cf9bd778f0> | 3.359375 | 283 | Truncated | Science & Tech. | 37.391537 |
Search our database of handpicked sites
Looking for a great physics site? We've tracked down the very best and checked them for accuracy. Just fill out the fields below and we'll do the rest.
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iText APIs provides facility to make the lines. In this program we are going to tell you how you can make single lines and how you can make multiple lines on the text in pdf files. You can make multiple lines and also make colorful lines by using this example.
In this example we are making an object of Chunk.
Then set ... | <urn:uuid:7db50d61-3a91-47d9-82af-64212e1b73b1> | 3.625 | 476 | Documentation | Software Dev. | 64.217931 |
Feb. 13, 2008 ESA's test centre is buzzing with activity and anticipation as it welcomes its latest guest. The gigantic telescope of ESA’s space-based infrared observatory, Herschel, is being prepared to be assembled with its spacecraft in the next few weeks.
Herschel’s telescope, which will carry the largest mirror ev... | <urn:uuid:fc53a174-e9cd-4e29-ac65-477a0577ba0b> | 3.234375 | 458 | Truncated | Science & Tech. | 36.318308 |
In Focus: Carbon Capture Technology
Coal is bountiful, cheap, and accounts for about 50% of our current electricity generation. Worldwide, coal is the dominant source of power and is projected to increase even further as petroleum prices skyrocket.
However, coal is dirty. Along with ash, it is also carbon rich and has ... | <urn:uuid:cb6a9f51-5307-46d2-beaa-7160bd67a51d> | 3.65625 | 892 | Knowledge Article | Science & Tech. | 26.455926 |
A new article highlights the really cool work that has come from Ken Smith and Henry Ruhl. Ken’s lab has monitoring a deep-sea abyssal site called Station M for the last 20+ years located of the southern California coast. Their work has lead to many major findings. One of the most important is that deep-sea patterns an... | <urn:uuid:e5ed75e6-5eb5-4397-b37f-ee45bfed4753> | 3.203125 | 208 | Personal Blog | Science & Tech. | 44.087253 |
Sulochanan, Bindu and Korabu, Laxman Shankar (2009) Enhalus acoroides (L.f.) Royle fruits observed in Gulf of Mannar. Marine Fisheries Information Service, Technical and Extension Series, 200 . pp. 19-21.
Seagrass are angiospermous plants adapted to grow in marine environment. Seagrass meadows are the nursery ground fo... | <urn:uuid:afe0cc68-7f79-4ae2-a4e9-4ee705d4b154> | 2.859375 | 217 | Academic Writing | Science & Tech. | 44.93036 |
How to add comments to code
Adding comments to code is an important part of writing Java programs. Though it is recommended to add as many comments as possible in your code but still there are some best practices which if followed really make code commenting a useful affair not only for the developer himself but also f... | <urn:uuid:46da2a1e-2ef5-4003-89dc-ecc7a4f9042a> | 2.921875 | 250 | Tutorial | Software Dev. | 52.138333 |
6.4. What Are the Spokes?
One topic of especial interest in the Cartwheel is the spokes which so perplexed Zwicky in 1941. Spokes in ring galaxies are rare. Indeed, the Cartwheel spokes are unique among the known collisional ring galaxies. AM0644-741 and II Hz 4 have spiral-like arms interior to the ring, but there are... | <urn:uuid:a444c9d2-4929-44d9-8334-f55bd3f14fd7> | 3.625 | 2,155 | Academic Writing | Science & Tech. | 46.170136 |
Can you explain what is happening and account for the values being
My average speed for a journey was 50 mph, my return average speed
of 70 mph. Why wasn't my average speed for the round trip 60mph ?
An environment that simulates a protractor carrying a right- angled
triangle of unit hypotenuse.
A conveyor belt, with t... | <urn:uuid:4eb4cc44-c2b7-44e3-aede-4d4344d6fdad> | 3.234375 | 271 | Content Listing | Science & Tech. | 69.366667 |
Applying Doppler Effect to Moving Galaxies
Overview: Students make the observation that farther galaxies move away faster, and check that a model of an expanding universe makes predictions that match with those observations.
Physical resources: Expanding universe model
Electronic resources: Virtual spectroscopy
Observa... | <urn:uuid:e63154c2-8819-4bb8-a8ef-dc090eaaa8c6> | 4.46875 | 1,072 | Tutorial | Science & Tech. | 36.524391 |
What to know
-Columns, groups or families:
how many valance electrons (electrons in last energy level) present
-Rows or periods: how many energy levels there are
e.g-If you are in gr.3 you will have: 3 valence electrons
e.g-If you are in per. 4 you will have: 4 energy levels
are limits to the amount of electrons that a... | <urn:uuid:4196afed-2133-44c0-a91f-7818768ce5bf> | 4.1875 | 409 | Tutorial | Science & Tech. | 62.461012 |
eldavojohn writes "The Hubble Constant is used for many things in astrophysics: from determining how fast things are moving away from us, to the total volume of the universe, to predicting how our universe will end. The current best value for the Hubble Constant is 74.2 ± 3.6 (km/s)/Mpc according to recent conventional... | <urn:uuid:3f9e742d-9b5c-4b27-bdbf-c3b6179fbc4a> | 3.09375 | 246 | Truncated | Science & Tech. | 41.146239 |
phosphorescence science definition
- The emission of light by a substance as a result of having absorbed energy from a form of electromagnetic radiation, such as visible light or x-rays. Unlike fluorescence, phosphorescence continues for a short while after the source of radiation is removed. Glow-in-the-dark products ... | <urn:uuid:f03ff53a-0e36-49b4-9d93-741d07b43122> | 3.28125 | 87 | Structured Data | Science & Tech. | 27.28675 |
The windspeed in the highest cloud layer reach 355 km/hr (220 mi/hr) which is roughly equal the Earth's jet stream.
The middle cloud layer has the fastest winds. These winds can reach 724 km/hr (450 mi/hr.) That is faster than the fastest tornado on Earth!
In the lowest cloud levels, the winds blow at around 160 km/hr ... | <urn:uuid:2dc17121-9184-4f5e-821a-245d59e00d84> | 3.078125 | 126 | Knowledge Article | Science & Tech. | 112.578565 |
Burrowing in marine muds by crack propagation: kinematics and forces
Attribution-NonCommercial-ShareAlike CC BY-NC-SA Doi: 10.1242/jeb.010371
The polychaete Nereis virens burrows through muddy sediments by exerting dorsoventral forces against the walls of its tongue-depressor-shaped burrow to extend an oblate hemispher... | <urn:uuid:f85398ea-c8e2-4592-9541-3a519363a602> | 2.75 | 461 | Academic Writing | Science & Tech. | 41.27153 |
NGC 3603: A giant star-forming region.
Caption: Chandra has resolved the multitude of individual X-ray sources in one of our galaxy's most active star-forming regions. This giant cloud of dust, gas, and stars, known as NGC 3603, is approximately 20,000 light years from Earth. The hundred or more young stars in this ima... | <urn:uuid:5048c199-879f-4718-8cef-e74bc14937c0> | 3.703125 | 139 | Truncated | Science & Tech. | 70.238839 |
Cal Poly Pomona is one of the most biologically diverse campuses in the CSU system. In addition to its gardens, orchards, and agricultural fields, it has portions of four different ecological communities (coastal sage scrub, walnut woodland, oak woodland, and riparian woodland). These natural areas are home to at least... | <urn:uuid:f61d4bb7-b466-47a7-81ba-04ab75d0eaa3> | 3 | 182 | Knowledge Article | Science & Tech. | 22.577983 |
Ionizing & Non-Ionizing Radiation
Most naturally occurring radioactive materials and many fission products; undergo radioactive decay through a series of transformations (loss of particles or electromagnetic energy from an unstable nucleus) rather than in a single step. Until the last step, these radionuclides emit ene... | <urn:uuid:6a52c4ef-b9d5-4af1-ac19-2e86f2855317> | 4.25 | 1,203 | Knowledge Article | Science & Tech. | 31.572239 |
Forests are not only valuable sources of wood and fuel, but they are also home to many types of plants and animals.
Trees also stop wind and rain removing soil, they modify local climate and slow down climate change by storing carbon.
Unfortunately, the forests are rapidly shrinking. Every year, huge areas are destroye... | <urn:uuid:43668b08-b96e-4b7f-8720-1c88a78ff58a> | 3.71875 | 186 | Knowledge Article | Science & Tech. | 41.005726 |
1. The World of Chemistry
The relationships of chemistry to the other sciences and to everyday life are presented.
The search for new colors in the mid 1800s boosted the development of modern chemistry.
3. Measurement: The Foundation of Chemistry
The distinction between accuracy and precision and its importance in comm... | <urn:uuid:6f4718ca-85ab-4fcc-931d-751db3664df3> | 3.953125 | 678 | Content Listing | Science & Tech. | 34.754997 |
PONDER this one in the bath. Chances are you've just scrubbed your back with a choice example of one of evolution's greatest inventions. Or at least, a good plastic copy.
Sponges are a key example of multicellular life, an innovation that transformed living things from solitary cells into fantastically complex bodies. ... | <urn:uuid:0de2fc2c-0a90-4f24-b414-99d716e6d1c2> | 3.515625 | 217 | Truncated | Science & Tech. | 50.306105 |
Through the environment cluster management program, NSTDA developed technology to produce porous material which is resistant to low temperature, made from rice husk ash and other waste materials. This material can be used in diverse industries ie: construction, aquaculture and soil-less planting. The products from this... | <urn:uuid:22841d1c-7957-4451-bd0f-ed87ddf8b16e> | 3.234375 | 310 | Knowledge Article | Science & Tech. | 38.070231 |
There is no certain bet in nuclear physics but work by Nobel laureate Carlo Rubbia at CERN (European Organization for Nuclear Research) on the use of thorium as a cheap, clean and safe alternative to uranium in reactors may be the magic bullet we have all been hoping for, though we have barely begun to crack the potent... | <urn:uuid:87066ba2-5627-4871-bb6b-28ba82a685ef> | 3.125 | 249 | Comment Section | Science & Tech. | 54.00464 |
Hafnium is a chemical element in the periodic table that has the symbol Hf and atomic number 72.
A lustrous, silvery gray tetravalent transition metal, hafnium resembles zirconium chemically and is found in zirconium minerals.
Hafnium is used in tungsten alloys in filaments and electrodes and also acts as a neutron abs... | <urn:uuid:187d59a2-c00d-482b-bd0f-ccf10fba5aa6> | 3.4375 | 141 | Knowledge Article | Science & Tech. | 30.410444 |
NASA is pressing ahead, its fingers crossed, for a third and final shuttle flight this year.
Many types of asteroid could have created the kind of amino acids used by life on Earth to build proteins and regulate chemical reactions, according to new NASA research.
Astronomers have measured the most massive known black h... | <urn:uuid:c8f7ad79-6f4e-4238-bfd5-078bed351603> | 3.265625 | 537 | Content Listing | Science & Tech. | 45.279098 |
Thousands of asteroids lie in a belt between Mars and Jupiter. These asteroids lie in a location in the solar system where there seems to be a jump in the spacing between the planets. Scientists think that this debris may be the precursors of a planet, which was prevented from forming.
Asteroids are small boulders with... | <urn:uuid:0fcfff8b-4713-4156-80f3-7f2958342079> | 3.328125 | 92 | Truncated | Science & Tech. | 60.424193 |
‘Fast-blooming’ seaweed slows Caribbean reef recovery – scientists
SYDNEY, Australia, July 15, CMC – Fast-blooming seaweed is the main reason why the Caribbean’s coral reefs take longer to recover from stress than Australia’s Great Barrier Reef in Australia and those in the Indo-Pacific region, Australian marine scient... | <urn:uuid:2edcd4e4-39f2-4474-99df-9da69d5fe7c9> | 2.828125 | 166 | Truncated | Science & Tech. | 32.125226 |
|Key to genera of coneheaded katydids (Copiphorinae).|
All species of Neoconocephalus except N. triops and N. payhayokee have one generation per year. All except N. triops overwinter as eggs. N. triops overwinters as adults and has one generation in the northern extremes of its range and two and perhaps three generatio... | <urn:uuid:f06da312-9b02-4df5-ae02-b0c570d4b884> | 3.203125 | 388 | Knowledge Article | Science & Tech. | 45.693519 |
BREAK IN THE FOOD CHAIN?
The experts we surveyed pointed to disappearing native species as a major threat to the health of the Great Lakes. Some native fish populations are declining. The Great Lakes Radio Consortium's Lester Graham reports on how the decline of one of those organisms is of most concern.
COASTER BROOK ... | <urn:uuid:97adf725-d660-4bbc-a73e-fde2fb8888e8> | 3.21875 | 360 | Content Listing | Science & Tech. | 47.733739 |
The cobalt-60 isotope undergoes beta decay with a half-life of 5.24 years.
This particular radioisotope is historically important for several reasons. It is involved in the radioactive fallout from nuclear weapons. For many years, the gamma radiation from this decay was the main source for radiation therapy for cancer.... | <urn:uuid:cbe972c8-d54e-4632-a3e9-b25299ae7316> | 2.828125 | 103 | Knowledge Article | Science & Tech. | 48.029342 |
A Solar Technology Seeks Its Day in the Sun
By John Collins Rudolph in the New York Times, November 17 2009
For years, concentrating photovoltaic technology, which uses mirrors or lenses to focus the sun’s rays on small, high-efficiency solar panels, has tantalized researchers as a potential source of low-cost, utility... | <urn:uuid:58c43b5c-1373-4fbf-a5c6-729400a10cf1> | 2.984375 | 170 | Truncated | Science & Tech. | 22.368162 |
The results of a four-summer (1964-1967) hydrologic study of the watershed of Glenn Creek, about 8 miles north of Fairbanks, Alaska, in the Yukon-Tanana uplands physiographic province, are presented. This work was initiated to provide initial base line hydrologic data for a small subarctic watershed, the first of its k... | <urn:uuid:1659c03d-ca42-41a9-aa13-49404fc58f40> | 2.6875 | 457 | Academic Writing | Science & Tech. | 24.098356 |
Let b and c be relatively prime integers, and suppose a is an integer that is
divisible by both b and c. Prove that bc|a.
Follow Math Help Forum on Facebook and Google+
If a is divisible by both b and c, we have:
Originally Posted by Aryth If a is divisible by both b and c, we have:
Thus: ummm.... . how does that work?... | <urn:uuid:2c94a7a9-1713-4ed9-a83e-c5833366799e> | 3.1875 | 128 | Q&A Forum | Science & Tech. | 82.632479 |
Studies on the growth of Rhizocarpon geographicum in NW Scotland, and some implications for lichenometry
Bradwell, Tom. 2010 Studies on the growth of Rhizocarpon geographicum in NW Scotland, and some implications for lichenometry. Geografiska Annaler Series A Physical Geography, 92 (1). 41-52. 10.1111/j.1468-0459.2010.... | <urn:uuid:61d9b4ee-357d-42bd-b49a-34f73a4ad7f3> | 2.734375 | 506 | Academic Writing | Science & Tech. | 51.679375 |
Succeed in Understanding Astronomy
Astronomy is a branch of Physical Science that is concerned with the study of objects and effects in space or regions beyond the Earth's atmosphere.
My name is Ron Kurtus, and I've always been interested in space and the stars. I realized that knowledge of Astronomy is important for a... | <urn:uuid:6ff54371-3075-4e9a-aab2-fb297ba1a22c> | 3.5 | 347 | Content Listing | Science & Tech. | 36.277123 |
Climate Change, Dark Ages, and Armchair Disaster Prediction
Allowing that it was an “outrageous metaphor,” Giegengack took a roll of toilet paper out of his bag. He told the amused audience at Rainey Auditorium that, when measured proportionally, each inch of the 1,000-sheet roll is roughly equivalent to one million ye... | <urn:uuid:916dd363-c8fe-4118-9def-d0bd53eb4048> | 3.03125 | 374 | Personal Blog | Science & Tech. | 56.734523 |
Science subject and location tags
Articles, documents and multimedia from ABC Science
Tuesday, 14 May 2013
New teeth news American alligators could help to revolutionise tooth replacement in humans, suggests a new study.
Friday, 3 May 2013
Micro drone US scientists have created a tiny winged robot that can fly.
Tuesday... | <urn:uuid:ef6d527c-6b8e-482f-9ecb-13db47635f84> | 2.734375 | 650 | Content Listing | Science & Tech. | 38.511241 |
Science Fair Project Encyclopedia
Ewens's sampling formula
In population genetics, Ewens's sampling formula, introduced by Warren Ewens , states that under certain conditions (specified below), if a random sample of n gametes is taken from a population and classified according to the gene at a particular locus then the... | <urn:uuid:6eaa6847-3a23-4410-a07f-644762e45438> | 3.296875 | 428 | Knowledge Article | Science & Tech. | 37.277479 |
Jupiter's moon Io is about the same mass and size as the Earth's Moon. Based on this we would expect Io to have about the same inventory of radioactive elements and the same cooling rate as the Moon. We would expect Io to have the same level geological activity as the Moon, namely none. However, Io is the most geologic... | <urn:uuid:c9ddf1c3-b739-45b8-897c-f5160001ba60> | 4.40625 | 703 | Tutorial | Science & Tech. | 55.212245 |
How common are Earth-sized planets?
extrapolations from new data taken by NASA's orbiting
are indicating that at least one in ten stars are orbited by an
Earth-sized planet, making our Milky Way Galaxy the home to over ten
Unfortunately, this estimate applies only to planets effectively inside
the orbit of Mercury, mak... | <urn:uuid:33bcbba3-4193-4b4d-8bf9-f51d4d520769> | 3.390625 | 149 | Knowledge Article | Science & Tech. | 26.588214 |
- For some other uses of the word "wing" please see Wing (disambiguation).
A wing is a surface used to produce an aerodynamic force normal to the direction of motion by travelling in air or another gaseous medium. The first use of the word was for the foremost limbs of birds, but has been extended to include other anim... | <urn:uuid:8a9466cd-b61d-4280-acc7-743de519d295> | 3.515625 | 918 | Knowledge Article | Science & Tech. | 36.280084 |
How to find zoom level for a Google Static Map
Google Maps API has an integer "zoom level" which defines the resolution of the current view. Zoom levels between 0 (the lowest zoom level, in which the entire world can be seen on one map) to 21 (down to individual buildings) are possible within the default road maps view... | <urn:uuid:dafbc04b-719c-4144-badc-544d607b3e94> | 2.828125 | 657 | Documentation | Software Dev. | 58.371461 |
Cladophora Balls on the BrainCladophora Main Page Life History Ecology Culture References
A curious phenomenon is associated with a certain type of Cladophora that forms free-living spheres, filled with water, mud or gas released from photosynthesis. These ball forms, called Aegagropila, may be found in both freshwater... | <urn:uuid:140ae9b3-7d50-416a-8569-2077b5171e35> | 3.234375 | 429 | Knowledge Article | Science & Tech. | 26.232353 |
Hydrothermal Vents can be found on the seafloor in areas with volcanic activity.
Cracks in the ocean floor allow cold water to seep below the earth’s crust,
where it is heated up to 400 ° C (756 ° F). The hot water absorbs chemicals
from the molten rock below. When the hot fluid meets the oxygen rich cold seawater,
che... | <urn:uuid:171e7b02-c479-4423-bbc9-ef09e56ed44b> | 3.4375 | 114 | Knowledge Article | Science & Tech. | 58.5775 |
The Ganges and Indus river dolphins are the last survivors of a once-diverse group. Should they be priorities, or should we bet on the more resilient groups?
Deciding Which Species to Save
Felix Marx just finished his Ph.D. in paleontology at the University of Otago in New Zealand.
Updated January 11, 2013, 10:36 AM
As... | <urn:uuid:7e02a7f4-6d61-4afc-bc46-cd997c5e4b2f> | 3.390625 | 620 | Nonfiction Writing | Science & Tech. | 28.096801 |
This can be done in such a way that indicating a local or networked source becomes simple. An import path such as /widgets/helloworld indicates a local file path. A path such as http://helloworld.foocorp.com points to a network file store. There could be other syntax, of course, but this is one example of an easy way t... | <urn:uuid:3bdd9df7-8675-4650-9e63-be7eac388413> | 3.15625 | 1,651 | Comment Section | Software Dev. | 58.437671 |