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 |
|---|---|---|---|---|---|---|---|
By Alexander Villafania INQUIRER.NET In the aftermath of perhaps the worst typhoon that struck Metro Manila in recent years, environmental groups are blaming climate change for the effects of âOndoyâ (international name âKetsanaâ). In different statements, the World Wildlife Fund (WWF) and Greenpeace warned that such a... | <urn:uuid:02304444-c95f-4f31-9bf8-87f611ecbc3f> | 2.71875 | 2,828 | Comment Section | Science & Tech. | 40.463503 | 200 |
Our Changing Ocean
Vast and powerful though the ocean is people have changed it. It’s a different ocean now.
The ocean’s enduring surface beauty hides its plight. But the ocean today is a diminished version of a much healthier ocean of not so long ago.
The ocean is the source of about half the oxygen we breathe, much o... | <urn:uuid:37813f25-88c4-46b8-a404-67d7ad70dc62> | 3.0625 | 1,062 | Knowledge Article | Science & Tech. | 39.662902 | 201 |
Chandra "Hears" a Supermassive Black Hole in Perseus
A 53-hour Chandra observation of the central region of the Perseus galaxy cluster (left) has revealed wavelike features (right) that appear to be sound waves. The features were discovered by using a special image-processing technique to bring out subtle changes in br... | <urn:uuid:7c5032f8-872f-474b-bda7-8c70bc31adaa> | 4.34375 | 389 | Knowledge Article | Science & Tech. | 43.14427 | 202 |
Declares a cursor definition.
A cursor is declared in accordance with the select-statement or the result set procedure call specified in procedure-call-statement.
The select-statement may be specified explicitly in ordinary embedded SQL applications or by the name of a prepared select-statement, identified by statement... | <urn:uuid:b1993193-d6e1-462e-bd4a-4801beb1522b> | 2.84375 | 803 | Documentation | Software Dev. | 36.165247 | 203 |
Examples of Python source code or interactive sessions are represented as \verbatim environments. This environment is a standard part of LaTeX. It is important to only use spaces for indentation in code examples since TeX drops tabs instead of converting them to spaces.
Representing an interactive session requires incl... | <urn:uuid:8e8afdb8-adcd-4d41-a263-cdcb0e2a135e> | 3.203125 | 365 | Documentation | Software Dev. | 39.90125 | 204 |
The modules described in this chapter support storing Python data in a persistent form on disk. The pickle and marshal modules can turn many Python data types into a stream of bytes and then recreate the objects from the bytes. The various DBM-related modules support a family of hash-based file formats that store a map... | <urn:uuid:9658ddde-001b-43ce-b86a-c2ce800a0eb2> | 2.546875 | 116 | Documentation | Software Dev. | 49.149803 | 205 |
Scientists have long projected that areas north and south of the tropics will grow drier in a warming world –- from the Middle East through the European Riviera to the American Southwest, from sub-Saharan Africa to parts of Australia.
These regions are too far from the equator to benefit from the moist columns of heate... | <urn:uuid:71855304-2f8a-4425-8945-02a9b90be1ae> | 3.078125 | 203 | Truncated | Science & Tech. | 46.19395 | 206 |
The Seine, the scenic river running through Paris, has inspired artists, attracted tourists and served as the soul of the city, and now it will also be a source of renewable energy. Paris officials have announced a plan to place river turbines beneath four bridges on the Seine.
The Pont du Garigliano, Pont de la Tourne... | <urn:uuid:e338e7ab-37e4-40ee-98f0-254c81baa630> | 2.953125 | 220 | News Article | Science & Tech. | 33.024703 | 207 |
Many people are confused about the concepts in DBus. This page gives an analogy to the web which should help to explain things.
- unique bus name
- well-known bus name
- object path
- method name
- in parameters
- out parameters
Web Server Analogy
- unique bus name is like an IP address. In particular it is dynamic.
- ... | <urn:uuid:cb0bcce9-2024-41cc-84bb-9ebb601e44b8> | 3.03125 | 295 | Knowledge Article | Software Dev. | 39.245758 | 208 |
The effect of UVR on biological systems is wavelength dependent. Action spectrum for DNA damage is an essential component of understanding the effects of increased UVB on a range of Antarctic invertebrate larvae. The wavelength dependency is quantified using spectral weighting functions which provide information such a... | <urn:uuid:8aa7e8f1-43dd-4954-ad12-56a69e48c91b> | 3.078125 | 263 | Academic Writing | Science & Tech. | 29.766875 | 209 |
Active RNA polymerase (RNAP) somehow remains both stable and mobile. In the 28 July Science Korzheva et al. combine the X-ray crystal structure of Thermus aquaticus (Taq) core RNAP with their own crosslinking data to derive a model of a functioning bacterial core RNAP (Science 2000, 289:619-625). At the front, a 20° hi... | <urn:uuid:ffba1cfb-3e1a-45eb-a491-fe3036ab3deb> | 2.625 | 147 | Academic Writing | Science & Tech. | 49.326282 | 210 |
Author Contact: email@example.com
Biocatalysis and biotransformations are important alternatives to consider when one is looking to substitute a conventional method with a greener one. One of the many advantages of using biotransformation as a synthetic method is that they are usually done in water and at ambient condi... | <urn:uuid:0623dac4-742f-4aad-ba41-e19e30324d0a> | 2.5625 | 323 | Knowledge Article | Science & Tech. | 22.530592 | 211 |
How LCLS X-ray pulses can be used to determine the atomic structure of a complicated molecule.
A New Kind of Laser
SLAC's two-mile-long linear accelerator (or linac) has begun a new phase of its career, with the creation of the Linac Coherent Light Source (LCLS).
For nearly 50 years, SLAC's linac has produced high-ener... | <urn:uuid:84a9f46f-4fe6-4a19-8045-3dd7ce4c44f6> | 3.859375 | 663 | Knowledge Article | Science & Tech. | 50.014085 | 212 |
Properties of Water
Life would not have existed on earth without water. Water molecules
are composed of one oxygen atom and two hydrogen atoms. Together, the
hydrogen and oxygen molecules form a shape that resembles the head of
While water molecules seem to be simple compounds, their properties
have profound impact on ... | <urn:uuid:3bc65f9d-b881-45f5-a3f1-3d957eeccb92> | 3.96875 | 309 | Knowledge Article | Science & Tech. | 18.641923 | 213 |
Sketch the graph of the following.
Any help would be appreciated!
You know that there are two vertical asymptotes at x = 5 and x = -3, then the graph also tends to the line y = x as x becomes large.
Since there are two asymptotes, the graph is in three parts and as similar graphs, the central part is fairly similar to ... | <urn:uuid:b6dc6fda-e814-45bf-8df1-b4f612a1c966> | 2.796875 | 136 | Q&A Forum | Science & Tech. | 69.590585 | 214 |
leafscale gulper shark
Today the European Commission proposed new catch limits for 2013 and 2014 that will allow fishermen to exploit some little-known but important deep-sea fishes against the advice of scientists. As this video of the European deep-sea prepared by our European office demonstrates, even though light d... | <urn:uuid:4935bb1d-38d3-421d-b9fd-780da26f16ef> | 3 | 362 | News (Org.) | Science & Tech. | 28.795955 | 215 |
You have an empty container, and an infinite number of marbles, each numbered with an integer from 1 to infinity.
At the start of the minute, you put marbles 1 - 10 into the container, then remove one of the marbles and throw it away. You do this again after 30 seconds, then again in 15 seconds, and again in 7.5 second... | <urn:uuid:d185d41e-eca2-40cb-80e0-525a863d830c> | 2.921875 | 350 | Comment Section | Science & Tech. | 60.809695 | 216 |
Ingenious fishing method may be spreading through dolphinsAugust 24th, 2011 in Biology / Plants & Animals
(PhysOrg.com) -- Researchers from Murdoch University believe a recently documented method of fishing may be spreading throughout a population of dolphins.
Indo-Pacific bottlenose dolphins (Tursiops aduncus) in Shar... | <urn:uuid:c652dec2-1f35-4e79-9f2d-a10ce480f310> | 3.640625 | 608 | News Article | Science & Tech. | 46.509545 | 217 |
The steps by which molecules in the primordial soup came together to form the genetic backbone of life are largely unknown. One approach to finding out is to artificially create basic life functions in the laboratory and consider if such conditions might have been possible in the Earth’s past. Writing in Physical Revie... | <urn:uuid:4667167f-2026-4584-834a-5892652dce7e> | 4.15625 | 339 | Academic Writing | Science & Tech. | 27.06836 | 218 |
What is API?
API is an interface that allows software programs to interact with each other. It defines a set of rules that should be followed by the programs to communicate with each other. APIs generally specify how the routines, data structures, etc. should be defined in order for two applications to communicate. API... | <urn:uuid:7cf35450-4a45-4a04-92c2-84c70317cbd0> | 3.40625 | 462 | Q&A Forum | Software Dev. | 39.488346 | 219 |
Download chapter 3: 'Basic SOA Using REST'
This chapter is excerpted from the book titled, SOA Using Java Web Services, authored by Mark Hansen, published by Prentice Hall Professional, May, 2007, ISBN 0130449687, Copyright 2007 Pearson Education, Inc. For more information please visit: www.prenhallprofessional.com
3.1... | <urn:uuid:dfca6006-bdf3-4e2c-951f-26755b764c06> | 2.5625 | 1,550 | Truncated | Software Dev. | 47.177085 | 220 |
Matter in the corona and solar wind is derived from the outer convective zone (OCZ) of the Sun. Isotopic abundances of the less volatile elements in the solar atmosphere are probably very similar to terrestrial, lunar and meteoritic abundances. From such elements it is possible to infer the amount of isotopic fractiona... | <urn:uuid:9e86d6d1-7844-4d1f-a3f1-0319fa1e4405> | 3.546875 | 377 | Knowledge Article | Science & Tech. | 13.649524 | 221 |
Marine science students at Tates Creek High School are raising largemouth bass and growing vegetables without soil in a new three-level aquaponics station, which recycles water in a sustainable food-production model.
In the simple setup, water from the fish barrel trickles into the grow beds, which routinely drain so t... | <urn:uuid:1764129b-73fc-4231-8edb-5beff6b03fe3> | 3 | 275 | News Article | Science & Tech. | 58.052061 | 222 |
In Python, for a binary file, I can write this:
buf_size=1024*64 # this is an important size... with open(file, "rb") as f: while True: data=f.read(buf_size) if not data: break # deal with the data....
With a text file that I want to read line-by-line, I can write this:
with open(file, "r") as file: for line in file: #... | <urn:uuid:49c7c0b6-a2ce-4617-b05c-a6e4bae21e61> | 2.78125 | 319 | Q&A Forum | Software Dev. | 85.561623 | 223 |
'Global Warming is real' declares new scientific work from an independent group of researchers called the Berkeley Earth Surface Temperature Study. The research team is at least partially funded by the Koch Brothers who fund several climate denial groups. The team was setup to identify flaws in the climate science of g... | <urn:uuid:8f8897c6-a03e-4bf4-ab03-1f6c22eaccaf> | 2.8125 | 1,805 | Comment Section | Science & Tech. | 30.976811 | 224 |
Explanation: Please wait while one of the largest mobile machines in the world crosses the road. The machine pictured above is a bucket-wheel excavator used in modern surface mining. Machines like this have given humanity the ability to mine minerals and change the face of planet Earth in new and dramatic ways. Some op... | <urn:uuid:7e88181f-71be-4790-9182-7f6015ab60d7> | 3.265625 | 155 | Personal Blog | Science & Tech. | 49.371154 | 225 |
Laura formed as a slightly unusual sub-tropical storm in the northern mid-Atlantic on September 29, 2008. Subtropical storms are hybrids of tropical storm systems and extratropical storms, forming in cooler waters farther north (or south) of the usual hurricane formation regions. Laura formed quite far north, well away... | <urn:uuid:9ed34bc9-0835-4317-a6cc-92f905d09392> | 3.8125 | 480 | Knowledge Article | Science & Tech. | 48.08331 | 226 |
|Direct Imaging of Asymmetric Magnetization Reversal|
The phenomenon of exchange bias has transformed how data is read on magnetic hard disks and created an explosion in their information storage density. However, it remains poorly understood, and even the fundamental mechanism of magnetic reversal for exchange-biased ... | <urn:uuid:6303857f-0867-4589-b8d6-612b9491697c> | 2.84375 | 999 | Academic Writing | Science & Tech. | 21.16189 | 227 |
TAU Researchers Part of Team of International Scientists to Uncover the "God Particle" Wednesday, July 25, 2012
Higgs boson particle crucial for explaining how the universe was built
Tel Aviv University's Prof. Yaron Oz, dean of TAU's Faculty of Exact Sciences, and Prof. Aharon Levy of TAU's School of Physics and Astro... | <urn:uuid:3395d913-9a54-4e42-8af6-a4b4a5198506> | 2.765625 | 463 | News (Org.) | Science & Tech. | 43.505575 | 228 |
July Rendezvous with Vesta
"We often refer to Vesta as the smallest terrestrial planet," said Christopher T. Russell, a UCLA professor of geophysics and space physics and the mission's principal investigator. "It has planetary features and basically the same structure as Mercury, Venus, Earth and Mars. But because it i... | <urn:uuid:62f9a0fe-badd-43cc-ae00-acdb6adf5f1a> | 3.640625 | 1,015 | Knowledge Article | Science & Tech. | 53.927142 | 229 |
Why does this galaxy have so many big black holes?
No one is sure.
What is sure is that
NGC 922 is a ring galaxy created by the collision of a large and small galaxy about
300 million years ago.
Like a rock thrown into a pond, the
ancient collision sent ripples of
high density gas out from the impact point near the cen... | <urn:uuid:3231bdb9-63f9-4af7-ba27-fa67dc6013bb> | 4.0625 | 241 | Knowledge Article | Science & Tech. | 53.525 | 230 |
Scientists identified seven new species of bamboo coral discovered on a NOAA-funded mission in the deep waters of the Papahānaumokuākea Marine National Monument. Six of these species may represent entirely new genera, a remarkable feat given the broad classification a genus represents. A genus is a major category in th... | <urn:uuid:ad26ba98-1713-48a2-a39f-70743debf943> | 3.8125 | 405 | News Article | Science & Tech. | 31.986071 | 231 |
March 22, 2000
UPTON, NY - Painting a bridge can be a costly and time-consuming undertaking, especially if the paint job doesn't last. So scientists have been working on ways to test paint durability before the brushes even get wet. At a March 22 session at the American Physical Society meeting in Minneapolis, scientis... | <urn:uuid:40761850-51ad-4c6c-8255-6eef07767cd1> | 3.515625 | 648 | News (Org.) | Science & Tech. | 38.193606 | 232 |
Exponential growth refers to an amount of substance increasing exponentially. Exponential growth is a type of exponential function where instead of having a variable in the base of the function, it is in the exponent. Exponential decay and exponential growth are used in carbon dating and other real-life applications.
I... | <urn:uuid:d2dd73a6-860a-4d35-a21c-b746c236c544> | 3.46875 | 695 | Tutorial | Science & Tech. | 75.162048 | 233 |
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.
Family Megalopygidae ( flannel moths)240 species in Central and South America; larvae similar to those of Limacodidae, but with normal prolegs and... | <urn:uuid:1468355c-3c1f-45db-ae94-69b998b5c0c8> | 2.53125 | 104 | Knowledge Article | Science & Tech. | 49.100731 | 234 |
Enumerators in C#
In this article I will explain you about Enumerators in C#.
This article has been excerpted from book "The Complete Visual C# Programmer's Guide" from the Authors of C# Corner.
As explained earlier, C# has a new iteration syntax called foreach. The foreach statement can only be applied to objects of c... | <urn:uuid:587448ab-7956-49b2-82c3-cfc1cc2935bb> | 3.09375 | 702 | Documentation | Software Dev. | 38.987817 | 235 |
In all modern languages like C# and Java, we gain benefits of garbage collection. What about implementing our own. In this article, I will try to explain how to implement garbage collector for C language.
What is Garbage Collection?
In C language, dynamic memory management operations are done with
free() functions. Whe... | <urn:uuid:ce19234a-ce21-4e12-b5cb-ff091e5c29bd> | 3.671875 | 2,722 | Documentation | Software Dev. | 44.768218 | 236 |
Introduction and Installation of Php
What is PHP?
PHP is an acronym for Hypertext Preprocessor. It is a dynamic server side scripting language that allows an application developer to create very simple to very complex mechanisms for the web. Think of PHP as the brain and central nervous system behind your applications.... | <urn:uuid:93e7568d-ea00-4e99-a8f3-b4d699a610e4> | 3.40625 | 674 | Product Page | Software Dev. | 57.943167 | 237 |
Algae plus salt water equals … fuel? Bilal Bomani wants to create a biofuel that is "extreme green"— sustainable, alternative and renewable. At NASA's GreenLab Research Facility, he uses algae and halophytes to create a self sustaining, renewable energy ecosystem that doesn't consume arable land or fresh water.
Bilal B... | <urn:uuid:eed9527c-7d8a-4dfb-812f-9c0597ec971d> | 3.296875 | 129 | Nonfiction Writing | Science & Tech. | 31.717 | 238 |
Exploring Nonlinear Mechanical Behaviour of Rocks at LANCE
SMARTS - Spectrometer for Materials Research at Temperature and Stress
Atomic-scale stress-strain information obtained from the neutron Rietveld data indicate that the strain experienced by the crystalline quartz is ~1/5 of the macroscopic strain (the rest take... | <urn:uuid:cc2dd5ff-dead-495c-b3ab-c30e87bf94c3> | 2.90625 | 652 | Academic Writing | Science & Tech. | 26.517243 | 239 |
Cosmogenic Nuclide Group
Humans live on the earth’s surface and Earth Surface Processes (ESP) are cornerstones defining fundamental boundaries for civilization. Many of these processes occur so rapidly and unexpectedly that they have daunting consequences. We are poorly equipped to predict their nature and possible imp... | <urn:uuid:35e2c8bf-09be-4668-9037-dfb92cc9d874> | 3.15625 | 364 | About (Org.) | Science & Tech. | 18.661394 | 240 |
Kroto is now one of several prestigious individuals, including the groundbreaking Chemist Linus Pauling, who have enriched the Linfield community at an Oregon Nobel Laureate Symposium.
“The lecture-symposium was scheduled two years ago,” Director of Communications Mardi Mileham.
She mentioned that Kroto was selected to... | <urn:uuid:dfc2156e-6208-4bc8-820a-c377aeb8d85e> | 2.546875 | 615 | Nonfiction Writing | Science & Tech. | 42.165211 | 241 |
tree-equal tree-1 tree-2 &key test test-not => generalized-boolean
Arguments and Values:
test---a designator for a function of two arguments that returns a generalized boolean.
test-not---a designator for a function of two arguments that returns a generalized boolean.
generalized-boolean---a generalized boolean.
tree-e... | <urn:uuid:0dff129e-b6b0-4cf2-aef9-9316f348a147> | 3.234375 | 402 | Documentation | Software Dev. | 73.98829 | 242 |
Did a Comet Really Chill and Kill Clovis Culture?
A 130-foot-meteor created the mile-wide Meteor Crater in Arizona. The comet proposed to have impacted life in North America was significantly larger, but no crater indicating its collision has been found.
CREDIT: Dan Durda
A comet crashing into the Earth some 13,000 yea... | <urn:uuid:f3aa90d9-f56f-428a-a0b4-cef450a9b830> | 3.65625 | 1,523 | News Article | Science & Tech. | 42.966301 | 243 |
Texas Dust Storms
The same weather system that brought snow and ice to the American Midwest just after Thanksgiving 2005 also kicked up significant dust in western Texas and eastern Mexico. The winds associated with this cold front also fanned the flames of grass fires in the region, adding smoke to the mixture of aero... | <urn:uuid:2091f67c-e700-47ea-81fd-57c4320514bc> | 3.421875 | 164 | Knowledge Article | Science & Tech. | 49.772164 | 244 |
Spider silk can be scary enough to insects to act as a pest repellant, researchers say.
These findings could lead to a new way to naturally help protect crops, scientists added.
Spiders are among the most common predators on land. Although not all spiders weave webs, they all spin silk that may serve other purposes. Fo... | <urn:uuid:2bf9f9b2-3cdc-4ce4-979e-a8d74b24efa5> | 3.96875 | 690 | News Article | Science & Tech. | 41.406379 | 245 |
SETI Pioneers by David Swift, University of Arizona Press, pp 434, $35/£32.50
The scientist at the sensitive radio receiver was baffled by the strange signals apparently coming from deep space. 'The thought flashed through my mind that the disturbances I had observed might be due to intelligent control . . . The feelin... | <urn:uuid:ebbf1b83-ea9b-48b3-9a3b-4f970ea6c537> | 2.515625 | 212 | Truncated | Science & Tech. | 55.734245 | 246 |
DID shrinking guts and high-energy food help us evolve enormous, powerful brains? The latest round in the row over what's known as the "expensive tissue hypothesis" says no. But don't expect that to settle the debate.
The hypothesis has it that in order to grow large brains relative to body size, our ancestors had to f... | <urn:uuid:5da2971f-7ad1-46da-8894-812addcdbae4> | 3.0625 | 338 | Truncated | Science & Tech. | 51.253 | 247 |
Virginia Tech's Bill Hopkins holds a female wood duck, as part of the studies he and his colleagues are conducting to determine how the physiology and behavior of female amphibians, turtles and birds affect their offspring, and the consequences these interactions may have for population health. See more images and read... | <urn:uuid:488601a4-8dd1-4d73-b45b-dba4021c1e67> | 3.296875 | 1,146 | News (Org.) | Science & Tech. | 37.633754 | 248 |
S-1. Sunlight & Earth
S-1B. Global Climate
S-3.The Magnetic Sun
S-4. Colors of Sunlight
Optional: Doppler Effect
S-4A-1 Speed of Light
S-4A-2. Frequency Shift
S-4A-3 Rotating Galaxies
and Dark Matter
S-5.Waves & Photons
Optional: Quantum Physics
Q3. Energy Levels
Q4. Radiation from
One widely used property of waves is ... | <urn:uuid:9268091d-e08f-49a1-9c2a-bfdc6d447834> | 3.859375 | 1,410 | Knowledge Article | Science & Tech. | 46.500109 | 249 |
Mechanics: Circular Motion and Gravitation
Circular Motion and Gravitation: Audio Guided Solution
A loop de loop track is built for a 938-kg car. It is a completely circular loop - 14.2 m tall at its highest point. The driver successfully completes the loop with an entry speed (at the bottom) of 22.1 m/s.
a. Using ener... | <urn:uuid:1d779db4-f950-4006-9a69-5785000fcf08> | 3.671875 | 380 | Tutorial | Science & Tech. | 64.747194 | 250 |
Should I write: [itex](1-t)[(1-t)(2-t)-2 = -(t-3)(t-1)(t)[/itex]. This is the characteristic polynomial. Thus, the roots are 3,1,0. These are the eigenvalues. If I have equations,
(1-t)x + 2y = 0
1x + (2-t)y = 0
(1-t)z = 0,
and I plug in for t=0,1,3, I find for t=3 that eigenvectors are multiples of (1,1,0). For t=1, e... | <urn:uuid:42c86bf5-494c-4912-bdda-c646595625e6> | 2.875 | 247 | Q&A Forum | Science & Tech. | 100.506786 | 251 |
|Oct17-07, 09:45 PM||#1|
p value (stats)
1. The problem statement, all variables and given/known data
Measurements o the percentage of enrichment of 12 fuel rods used in a nuclear reactor were reported with a sample mean of 3.26. Test the hypothesis H_0: [tex]\mu[/tex]=2.95 versus H_1: [tex]\mu\neq[/tex]2.95, and draw ... | <urn:uuid:cdd7cf61-2ecc-4291-949c-dd481409bc93> | 2.640625 | 216 | Comment Section | Science & Tech. | 69.215576 | 252 |
Many years ago if you wanted to design something that used a microprocessor, you pretty much had to use some standard package provided by a vendor who had specialized software specific for that processor. You would use a non-standard interface to generate non-standard code to do the non-standard things that your produc... | <urn:uuid:81fe85b6-ef5e-42a1-bb40-f3e72cc93571> | 2.984375 | 603 | About (Org.) | Software Dev. | 46.307737 | 253 |
This Site is
ICRA and SafeSurf
For All Ages!
Descriptions of the Fields of Science
Chemistry is the science of matter at or near the atomic scale. (Matter is the substance of which all physical objects are made.)
Chemistry deals with the properties of matter, and the transformation and interactions of matter and energy... | <urn:uuid:65386665-f202-4b45-8afc-b2c62fb38072> | 3.484375 | 234 | Knowledge Article | Science & Tech. | 38.210655 | 254 |
IN THE TANK: The Daya Bay experiment currently employs six detectors, with a total of 120 metric tons of liquid detector material, to register passing neutrinos. Image: Roy Kaltschmidt, Lawrence Berkeley National Laboratory
Neutrinos are devious little particles. Only in the late 1990s were they shown to have mass, aft... | <urn:uuid:47264ba4-bbe4-4982-b518-14319bf1a0b8> | 3.578125 | 909 | News Article | Science & Tech. | 32.496085 | 255 |
"World Must Plan For Climate Emergency: Report"
"LONDON -- Humans may have to reset the Earth's natural thermostat and develop new technologies like reflecting sunlight back into space if climate talks fail, Britain's top science academy said on Tuesday.
So-called geoengineering was not a quick fix but may be needed to... | <urn:uuid:088ff32c-3590-441a-9d16-aae6ab063d69> | 2.53125 | 230 | News Article | Science & Tech. | 33.775 | 256 |
A group of researchers at DTU Space is developing an observatory to be mounted on the International Space Station. Called ASIM, the observatory will among other things photograph giant lightning discharges above the clouds. The objective is to determine whether giant lightning discharges affect the Earth’s climate.
The... | <urn:uuid:64609457-8d80-4c2f-9854-ad43579b4866> | 3.90625 | 231 | Knowledge Article | Science & Tech. | 24.952379 | 257 |
Want to stay on top of all the space news? Follow @universetoday on Twitter
Currently, astronomers have two competing models for planetary formation. In one, the planets form in a single, monolithic collapse. In the second, the core forms first and then slowly accretes gas and dust. However, in both situations, the pro... | <urn:uuid:dd183d74-6efe-4b52-a5fd-55d21cf5c3b4> | 4.09375 | 545 | Truncated | Science & Tech. | 42.653072 | 258 |
In a city of tweeting food trucks and Michelin-star restaurants, it was only a matter of time before San Francisco’s fusion-food culture found a way into a chemistry class.
After all, chemistry is what we taste when we bite into a chocolate-drizzled double scoop of destabilized fat globules and Fragaria ananassa. We ju... | <urn:uuid:54bd4fa6-9d20-4541-87b9-baddceea04f3> | 2.78125 | 314 | News Article | Science & Tech. | 28.33549 | 259 |
Comparison of water in two adjacent watersheds before and after implementing a brush management strategy in one of the watersheds helps us see what water resource characteristics are sensitive to brush management and how.
Changes in the way communities address potential problems with stormwater runoff may affect surfac... | <urn:uuid:bfd6d5a9-0ff7-493f-be13-62a7869b0cf1> | 2.890625 | 257 | Content Listing | Science & Tech. | 23.707624 | 260 |
During the week of May 13th, the CO2 level at the Mauna Loa Observatory in Hawaii topped 400 ppm repeatedly. Daily levels of CO2 can vary due to weather, and there are seasonal trends as well. The level of atmospheric greenhouse gases continues to increase, now over 120 ppm since the Industrial Revolution began. For mo... | <urn:uuid:9316d379-1f75-4e3f-992c-57d24c0b89af> | 3 | 353 | Content Listing | Science & Tech. | 57.035238 | 261 |
The heaviest known insects are the Goliath beetles of equatorial Africa. One fully grown male was found to weigh 3.5 ounces. (almost as much as a handful of quarters)
The heaviest human in medical history was Jon Brower Minnoch, who weighted 392 lbs. in 1963, 700 lbs. In 1966, and 975 lbs. in 1976. After being admitted... | <urn:uuid:db38593a-4cb9-4b79-b9fe-f2dffe4b9b4b> | 3.171875 | 3,480 | Knowledge Article | Science & Tech. | 56.895535 | 262 |
Evidence from caves in Siberia indicates that a global temperature increase of 1.5° Celsius may cause substantial thawing of a large tract of permanently frozen soil in Siberia. The thawing of this soil, known as permafrost, could have serious consequences for further changes in the climate.
Permafrost regions cover 24... | <urn:uuid:867e4ca7-5a93-4c6d-b021-8088aa153645> | 4.625 | 570 | News Article | Science & Tech. | 33.777143 | 263 |
NASA’s Solar Dynamics Observatory has had virtually unbroken coverage of the sun’s rise toward solar maximum, the peak of solar activity in its regular 11-year cycle. This video shows those three years of the sun at a pace of two images per day.
These noteworthy events appear at the following times in the video:
00:30;... | <urn:uuid:520aab0d-fde8-4b8b-abbf-fde142a3feea> | 3.40625 | 454 | News (Org.) | Science & Tech. | 51.193034 | 264 |
Over 4 billion years ago the young and barren Earth was being buffeted by meteor strikes, and that violent bombardment could have created the first amino acids that then gave rise to the origin of life on the planet, a new study suggests. The hellish temperatures and pressures generated when an extraterrestrial object ... | <urn:uuid:5bf43055-b25f-4836-87bd-ac23a3404a0b> | 3.8125 | 528 | News Article | Science & Tech. | 24.417317 | 265 |
Douglass Jacobs, an associate professor of forestry and natural resources, found that American chestnuts grow much faster and larger than other hardwood species, allowing them to sequester more carbon than other trees over the same period. And since American chestnut trees are more often used for high-quality hardwood ... | <urn:uuid:ade2c38d-a45b-4987-9c84-8d2fc184da53> | 3.84375 | 396 | Personal Blog | Science & Tech. | 35.308634 | 266 |
int WidthInInches(int feet);
// Initialize variables by calling functions.
int feet = WidthInFeet();
int wd = WidthInInches(feet);
// Display results.
std::cout << "Width in inches = " << wd;
std::cout << "Enter width in feet: ";
std::cin >> feet;
int WidthInInches(int feet)
return feet * 12;
I'm a new to C++ and I und... | <urn:uuid:a1a9e390-3568-45d2-be7e-695120f07aa9> | 3.15625 | 150 | Documentation | Software Dev. | 73.456759 | 267 |
First tropical depression of the season may form from 92L
An unusually large and well-developed African tropical wave for so early in the season has developed midway between the coast of Africa and South America. The storm was designated Invest 92L by the National Hurricane Center yesterday, and has a good chance of be... | <urn:uuid:6de7ce61-5b96-4eb5-aa7f-7fe832fa5540> | 2.515625 | 1,120 | Personal Blog | Science & Tech. | 46.113158 | 268 |
Special & General Relativity Questions and Answers
If a photon travels at the speed of light, why isn't its mass infinite?
Because the photon is one of those handful of particles ( photon, graviton, gluon) which has 'zero rest mass'. The special relativistic formula that shows mass increasing with speed only applies to... | <urn:uuid:7b69a7b7-162d-4061-84c4-c0b93d50fd95> | 3.140625 | 142 | Q&A Forum | Science & Tech. | 45.252333 | 269 |
Introduction to Physical Science/Energy
Many Forms of Energy
By 9th grade (U.S. system) some students can identify potential energy (energy stored in objects due to their position - snow on a steep slope) and kinetic energy (displayed by snow when it breaks loose and an avalanche falls down the steep slope.) Some stud... | <urn:uuid:0da88be6-9328-444a-9744-daffe374e829> | 3.359375 | 122 | Knowledge Article | Science & Tech. | 40.588258 | 270 |
Sivaram, C and Sinha, KP and Lord, Eric A (1974) f Gravity and gravitational singularities. In: Nature, 249 (5458). pp. 640-641.Full text not available from this repository. (Request a copy)
TRAUTMAN has postulated1 that the usual space−time singularity occurring in classical cosmological models and in the gravitationa... | <urn:uuid:388b7d44-3929-43c2-b847-7a2656985dfe> | 2.5625 | 250 | Truncated | Science & Tech. | 34.133352 | 271 |
The theory behind fossil fuels is actually quite simple. Burning coal, natural gas, and petroleum releases energy stored in the fuel as heat. The energy contained by the fuels is derived from the energy of the sun. For more detailed explanations of the origins of the different fossil fuels, visit the coal, natural gas,... | <urn:uuid:9af8df0e-8b5a-4355-b5f1-b4a57327a9fb> | 3.984375 | 181 | Knowledge Article | Science & Tech. | 35.081623 | 272 |
phhttpd uses an XML config file format to express how it should behave while running. More information on XML may be found near http://www.w3.org/XML/
phhttpd's configuration centers around the concept of virtual servers. For us, a virtual server may be thought of as the merging of a document tree and the actions phhtt... | <urn:uuid:93efbaf0-bd69-4425-b2ff-1cbec9d2c17c> | 2.828125 | 855 | Documentation | Software Dev. | 57.511966 | 273 |
The Power of One
In 1987 Brazilian-born Canadian, Marcelo da Luz saw a news clip about the World Solar Challenge race and it inspired him to design a super cool solar vehicle of his own - XOF1, which he calls The Power of One.
When the model was completely, he set out on a record-breaking trip. This visionary trip bega... | <urn:uuid:30735313-761e-4b5e-a93f-3436c3f96f5d> | 2.515625 | 260 | News Article | Science & Tech. | 69.238232 | 274 |
Is Zero Even?
Date: 03/28/2001 at 02:59:56 From: John Matousek Subject: Zero odd/even At numerous sites across the Internet the answer to the question whether zero is odd or even seems to be totally subjective, and the proofs used to justify 'even' (zero can be divided by two, therefore it is even), sound reasonable. B... | <urn:uuid:406d6832-8e5c-4eb8-936a-5c22bc09e887> | 2.90625 | 1,150 | Comment Section | Science & Tech. | 65.148556 | 275 |
Snow Pit Data from Greenland Summit, 1989 to 1993
Chemistry and isotope information from snow pits dug at the Summit area of Greenland, 1989-1993 includes major ions (Na, K, Mg, Ca, Cl, NO3, SO4), oxygen isotopes (18O) and H2O2. Four snow pits were dug and sampled in 1989, three snow pits in 1990, two in 1991, one in 1... | <urn:uuid:af970009-66d7-4642-ad4b-4597cf766f40> | 2.59375 | 279 | Knowledge Article | Science & Tech. | 63.99344 | 276 |
Lamp Shell Terebratulina septentrionalis
It would be easy to mistake a lamp shell for a small bivalve mollusk, as both have a hinged shell in two parts and live attached to the sea floor. Lamp shells, however, have a very thin, light shell and the two parts are different sizes, with the smaller one fitting into the lar... | <urn:uuid:0c979112-e58f-46d8-980b-de289ead7025> | 4.15625 | 289 | Knowledge Article | Science & Tech. | 45.001578 | 277 |
(Washington, DC • 11/6/06) – The second of five Special Sensor Ultraviolet Limb Imager (SSULI) remote sensing instruments, developed by the Naval Research Laboratory, was launched on November 4, 2006 on board the DMSP F-17 satellite. SSULI is the first operational instrument of its kind and provides a new technique for... | <urn:uuid:a168bd55-6030-4ce8-bdae-e503fe05ec37> | 2.90625 | 990 | News (Org.) | Science & Tech. | 31.048096 | 278 |
Roland Piquepaille points out a news release from the University of Michigan where researchers are looking to birds and bats for insights into aerospace engineering. Wei Shyy and his colleagues are learning from solutions developed by nature and applying them to the technology of flight. A presentation on this topic wa... | <urn:uuid:057cd66a-5444-47c4-a917-238fea363035> | 3.15625 | 194 | News Article | Science & Tech. | 55.136444 | 279 |
Greenhouse Effect Basics: Warm Earth, Cold Atmosphere
Posted on 29 February 2012 by Tom Curtis
Heating and Heat Flow
Some physics, everyone knows. In our daily lives we encounter the effects of physics all the time, and as a result, we know what physics predicts in those circumstances at a gut level. We may not be able... | <urn:uuid:cf658369-b75c-4945-b276-042f88282485> | 3.234375 | 1,893 | Personal Blog | Science & Tech. | 45.790763 | 280 |
Cicadas: Superfamily Cicadoidea
The drone of cicadas is one of Sydney's most recognisable sounds of summer. Cicadas are the loudest insects in the world and there are more than 200 species in Australia.
It is thought that the sound produced by some communal species can act as a defence against predatory birds and some ... | <urn:uuid:dc87789c-562f-43b0-bfee-0dee44be1fec> | 3.484375 | 1,770 | Knowledge Article | Science & Tech. | 56.365563 | 281 |
Locating thermophiles in other parts of the universe could very well aid in the search for extraterrestrial life. Most people have agreed that if life is found among the stars, it will be microbial (at least in the near-term future). Many individuals have also suggested that intelligent life forms might very well be ex... | <urn:uuid:fb936873-c4b3-4301-85c5-1bd5eb0d9a9c> | 3.8125 | 601 | Truncated | Science & Tech. | 43.368302 | 282 |
Santa's magic based on science
Ever wondered how Santa Claus can travel around the world in just one night on his reindeer-pulled sleigh and deliver toys to all the children?
"He exploits the space-time continuum," says Larry Silverberg, a professor of mechanical and aerospace engineering at North Carolina State Univer... | <urn:uuid:0a2bf733-f75c-48c6-9d08-3984c48079a9> | 3.40625 | 488 | News Article | Science & Tech. | 48.890111 | 283 |
Is Seaweed the Future of Biofuel? Monday, March 5, 2012
TAU scientist takes the search for alternative energy sources to the sea
As scientists continue the hunt for energy sources that are safer, cleaner alternatives to fossil fuel, an ever-increasing amount of valuable farmland is being used to produce bioethanol, a s... | <urn:uuid:4d27543d-0ab3-44f3-99cf-bf2174b9b1f7> | 3.109375 | 741 | News (Org.) | Science & Tech. | 25.5499 | 284 |
| || || || || || || |
Proceedings of Symposia in Applied Mathematics
1998; 275 pp; hardcover
List Price: US$60
Member Price: US$48
Order Code: PSAPM/55
There exists a history of great expectations and large investments involving Artificial Intelligence (AI). There are also notable shortfalls and memorable disappointmen... | <urn:uuid:2f973b63-67de-47d4-94bc-6d8aa7463c01> | 2.546875 | 458 | Product Page | Science & Tech. | 22.921429 | 285 |
Many, see text.
Hummingbirds (family Trochilidae) are small birds capable of hovering in mid-air due to the rapid flapping of their wings (15 to 80 beats per second, depending on the size of the bird). They are named for the characteristic hum of this rapid wing motion. They are the only birds that can fly backwards.
H... | <urn:uuid:10898cf8-af56-42f3-863a-7a402ec5c489> | 3.96875 | 1,502 | Knowledge Article | Science & Tech. | 40.922178 | 286 |
(S.D.)-Search For Radioactive Decay Continues In SD Lab
LEAD, S.D. (AP) - Physicists in South Dakota have started assembling "detector units" in the search for a rare form of radioactive decay that could help explain how the universe evolved.
The Majorana Demonstrator Experiment is under construction in the Davis Campu... | <urn:uuid:eadacc71-a5df-4db5-bd94-c2593074d562> | 3.015625 | 216 | News Article | Science & Tech. | 50.364596 | 287 |
18 Feb 2009 Corn starch/water on
an audio speaker. There is a very interesting video at this link
of oobleck dancing on an audio speaker:
Subject:University of Iowa Hydraulics
Center Films on Youtube (six films)
Introduction to the study of fluid
motion (1961, 25 minutes) http://youtu.be/EIuU9Q8CGDk
The first in a wide... | <urn:uuid:58bbc3a2-2cca-4aac-975b-6a2a183c1e45> | 2.890625 | 923 | Content Listing | Science & Tech. | 25.221004 | 288 |
Nitrate vs Nitrite
Both nitrate and nitrite are oxy anions of Nitrogen. Although they both seem to look alike, there are differences between them. These differences can be with respect to their structure, bonding, geometrical shape, oxidation state of Nitrogen, chemical reactivity, uses of them and etc. These differenc... | <urn:uuid:f6a548ac-b4b1-4ef4-b26e-802eaf6fc2cc> | 3.59375 | 877 | Knowledge Article | Science & Tech. | 51.455701 | 289 |
Famous Women in Astronomy
Part of the Astronomy For Dummies Cheat Sheet
When you’re studying astronomy don’t forget the women that made an impact in the field. Check out this list of amazing achievements by women astronomers and astrophysicists:
Caroline Herschel (1750–1848) Discovered eight comets.
Annie Jump Cannon (... | <urn:uuid:c1a9e1d0-9350-465a-a08c-c188f4ed1b70> | 3.859375 | 306 | Listicle | Science & Tech. | 42.766321 | 290 |
Go ahead and punch me in the face for being such a dweeb, but seeing Terrence Mallick’s Tree of Life really did have a fairly profound effect on my relationship with Mother Nature. It was apparent pretty much from the moment I walked out of the theater; something about the director’s vision just put me a bit more in tu... | <urn:uuid:49895bfa-08fa-460f-9548-79d451ec3c43> | 2.6875 | 675 | News Article | Science & Tech. | 49.515429 | 291 |
Fire and Invasive Plants -- Combustibility of Native and Invasive Exotic Plants
Alison C. Dibble, U.S. Department of Agriculture, Forest Service, Northern Research Station, 686 Government Rd., Bradley, ME 04411
William A. Patterson III, Department of Forestry and Wildlife Management, University of Massachusetts, Amhers... | <urn:uuid:edc43201-bbe0-4879-8f31-cc11f5f812ab> | 2.828125 | 1,256 | Academic Writing | Science & Tech. | 47.401774 | 292 |
Hyped Arsenic Bacteria Research 'Should Not Have Been Published'
by Brian Thomas, M.S. *
NASA recently issued a series of press releases and arranged a press conference to promote research claiming that life was possible in outer space.1, 2 However, the research drew heavy criticism from scientists around the world, an... | <urn:uuid:8e873607-c3da-4b12-bc38-7bf5699c4af9> | 3.1875 | 1,184 | News Article | Science & Tech. | 58.001149 | 293 |
Mars has a striking red appearance, and in its most favorable position for viewing, when it is opposite the sun, it is twice as bright as Sirius, the brightest star. Mars has a diameter of 4,200 mi (6,800 km), just over half the diameter of the earth, and its mass is only 11% of the earth's mass. The planet has a very ... | <urn:uuid:0b209998-4433-4b7d-8629-dc91f68d4b69> | 4.0625 | 1,348 | Knowledge Article | Science & Tech. | 44.253885 | 294 |
Science of the Quake
Developments in the wake of Japan's triple disasters: earthquake, tsunami, nuclear.
The US Geological Survey upgraded Japan's 11 March earthquake today to 9.0 from 8.9.
Based on Japan's huge network of 1,200 GPS monitoring stations, the quake shifted the country's coastline some 4 meters / 13 feet ... | <urn:uuid:b8cbac5b-a324-484f-919c-ed2222fbcc74> | 3.734375 | 1,084 | News Article | Science & Tech. | 45.18859 | 295 |
Joined: 16 Mar 2004
|Posted: Thu Aug 06, 2009 11:24 am Post subject: Nanotubes Could Aid Understanding of Retrovirus Transmission
|Recent findings by medical researchers indicate that naturally occurring nanotubes may serve as tunnels that protect retroviruses and bacteria in transit from diseased to healthy cells — a ... | <urn:uuid:8be1c3e2-ea54-459f-83ce-a0fd4be35a9f> | 3.03125 | 950 | Comment Section | Science & Tech. | 23.619571 | 296 |
Emerging Explorer, National Geographic Blackstone Innovation Challenge Grantee
Photograph by Dino Martins
Photograph by C. Lewis
Do you like chocolate? Coffee? Pollinating insects make these and hundreds of other foods possible. The threatened habitats that support those insects may often be out of sight and out of min... | <urn:uuid:05948a26-6a20-4242-9ad6-ead65affaddb> | 3.375 | 1,299 | Nonfiction Writing | Science & Tech. | 49.168064 | 297 |
Fri Mar 21 18:02:28 GMT 2008 by Gordon
Why is it that gamma rays cannot penerate the earth's atmosphere when they will happily travel though thick lead.
Fri Mar 21 18:59:29 GMT 2008 by Radek
Air in atmosphere corresponds to ... One meter of lead!
Fri Mar 21 19:24:17 GMT 2008 by Tony Byron
"The atmosphere shields us fro... | <urn:uuid:ff6d54ec-e3b9-412d-9909-96c7ca2e037a> | 3.234375 | 218 | Comment Section | Science & Tech. | 71.288992 | 298 |
Falling Objects and Bouncing
Location: Outside U.S.
Date: April 2008
I am looking to compare different masses, objects, shapes
and compare these to dents made in a specific plate (e.g.
polystyrene). For this experiment I would need not only to be able
to work out the velocity of the object but also how much air
resista... | <urn:uuid:e4b16c9b-077a-4540-930d-1c571c35557a> | 2.984375 | 1,485 | Q&A Forum | Science & Tech. | 52.5096 | 299 |