text large_stringlengths 148 17k | id large_stringlengths 47 47 | score float64 2.69 5.31 | tokens int64 36 7.79k | format large_stringclasses 13
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At first, I was somewhat confused by the critical texts against the use of biochar as a carbon dioxide reduction agent issued by the famous environmentalist George Monbiot.
Apart from some obvious exaggerations (‘turning the planet into charcoal’, 'primary source of world heating fuel’) and misunderstandings, he talks ... | <urn:uuid:ae94ebe9-08f5-4f6c-aaf0-e5e3157efb68> | 2.796875 | 950 | Personal Blog | Science & Tech. | 38.287375 |
(Submitted October 28, 1996)
I am an undergraduate in Astrophysics at the University of Calgary.
I am doing a small research project on the evidence for and against a black
hole at the center of the milky way. I found your email address on the
StarChild page dealing with this topic. I was wondering if you had
any sugge... | <urn:uuid:3105be62-e2f7-4b61-9c1d-b26c5bbb1c4a> | 3.40625 | 367 | Q&A Forum | Science & Tech. | 60.108952 |
Team members at NASA's Jet Propulsion Laboratory share the challenges of the Curiosity Mars rover's final minutes to landing on the surface of Mars .
It may be described as reasoned - even genius - engineering. But even the engineers who designed it agree it looks crazy. Six vehicle configurations, 76 pyrotechnic devic... | <urn:uuid:9f3e0d53-ba13-4860-b3e6-e2b2f2b413ef> | 2.90625 | 120 | Truncated | Science & Tech. | 51.04949 |
Updated: April 2009
Represents a button that can be selected, but not cleared, by a user. The IsChecked property of a can be set by clicking it, but it can only be cleared programmatically.
Assembly: PresentationFramework (in PresentationFramework.dll)
XMLNS for XAML: http://schemas.microsoft.com/winfx/2006/xaml/presen... | <urn:uuid:e0e929e6-ec32-4f6d-a8f9-f312d07f6635> | 3.25 | 404 | Documentation | Software Dev. | 57.803988 |
It might be worth taking a look to the original text, Galileo's Discourses on Two New Sciences. The reasoning you're looking for is on the Third Day, a translation of which may be found online. The relevant parts are labelled Theorem I and Theorem II in the above-linked translation.
To derive that distance in a uniform... | <urn:uuid:dc8b63be-e888-48a7-9a5d-00badaa0d583> | 3.484375 | 346 | Q&A Forum | Science & Tech. | 47.277002 |
The prevailing theory of dark matter is the Cold Dark Matter (CDM) hypothesis. This hypothesis is favored because it is assumed that the dark matter particles are non-relativistic - i.e. slow moving. Because they are slow moving, they can essentially orbit in and around the original small density fluctuations, making t... | <urn:uuid:1c4e95bb-0acc-4fd9-b816-0f91d61bacb3> | 3.140625 | 311 | Q&A Forum | Science & Tech. | 43.0525 |
- Periodic structure in nuclear matter (1992)
- The properties of nuclear matter are studied in the framework of quantum hadrodynamics. Assuming an ω-meson field, periodic in space, a self-consistent set of equations is derived in the mean-field approximation for the description of nucleons interacting via σ-meson and ... | <urn:uuid:f4b44646-f599-46c0-99d9-a9e099c5484f> | 2.859375 | 198 | Academic Writing | Science & Tech. | 33.321567 |
[Mystery bird] Great tit, Parus major, photographed in Helsinki, Finland. [I will identify this bird for you tomorrow]
Image: GrrlScientist, 24 November 2008 [larger view].
Please name at least one field mark that supports your identification.
Rick Wright, Managing Director of WINGS Birding Tours Worldwide, writes:
Chi... | <urn:uuid:630157bb-8098-47b7-baad-92dffe6fcc7f> | 2.828125 | 330 | Personal Blog | Science & Tech. | 50.307458 |
Calculations show that the celestial visitor could be dazzlingly bright in November 2013 and be easily visible in broad daylight as it rounds the Sun. Comet ISON is so named because it was first spotted on photos taken by Vitali Nevski and Artyom Novichonok from Russia using the International Scientific Optical Network... | <urn:uuid:7973d0bf-f251-4eb1-828c-9266ff0d971e> | 3.78125 | 269 | Personal Blog | Science & Tech. | 56.839821 |
Water: National Coastal Condition Report
National Coastal Condition Report (2001) Download Site
Coastal Research and Monitoring Strategy (PDF, 1.1MB, 70 pages)About PDF files
The Office of Wetlands, Oceans, and Watersheds, Coastal Programs, announces the release of the National Coastal Condition Report. This Report is ... | <urn:uuid:dcaab108-858e-4656-a2f3-44e097797a88> | 2.828125 | 532 | Content Listing | Science & Tech. | 53.777399 |
Descriptions and instructions for using the Japanese, Chinese, and Aztec abacus. Best if your browser is version 3.0 or higher so you can take full advantage of the site.
College Math Prep for High School Students
Multiple choice math problems designed to help high school students assess their readiness for college Mat... | <urn:uuid:95b288c2-0026-4b53-8183-0ace02b17649> | 3.296875 | 715 | Content Listing | Science & Tech. | 38.766751 |
This simple demonstration of Einstein's explanation for Brownian
motion shows little particles batting about a more massive one,
and what it would look like if you could see only the massive
one through a microscope. Einstein showed that the overall visible
motion, averaged over many observations, exactly matches what
... | <urn:uuid:5afba3f1-94d8-4569-a959-74f913f59e37> | 2.859375 | 117 | Truncated | Science & Tech. | 41.66698 |
Astronomers Discover Deep Fried Planets
This discovery, published in the science journal Nature, may shed new light on the destiny of stellar and planetary systems, including our solar system.
When our Sun nears the end of its life in about 5 billion years, it will swell up to what astronomers call a red giant, an infl... | <urn:uuid:3ab4e91f-bc81-4773-b7eb-eb4623f1dbbc> | 3.515625 | 1,581 | Knowledge Article | Science & Tech. | 49.647374 |
Before we try and understand the program, let us run it to see if it works!
The PLANStart tool is provided as a means to inject PLAN programs into the network directly from the command line. It is invoked by using the Java interpreter. Typing 'java PLANStart' gives you the usage of PLANStart :
% java PLANStart usage : ... | <urn:uuid:e051e700-ee9b-4f1e-92b8-7c65b7cbc843> | 3.046875 | 572 | Documentation | Software Dev. | 56.979985 |
of deep-sea hydrothermal vent faunas
By Cindy Lee Van Dover
Driving from New York to Miami across 15 degrees of latitude, hardwood forests
give way to palmetto scrub. From Washington State to Southern California, again
across 15 degrees of latitude, evergreen forests disappear and desert cacti
dominate. Any traveler wh... | <urn:uuid:d0187b3a-7dcd-4213-aad5-0eebe59ef62d> | 3.921875 | 1,343 | Knowledge Article | Science & Tech. | 24.667523 |
Is Narmada water being made to flow in Sabarmati not supplied to city of Ahmedabad? This has furthered the idea of river...
I have been selling glass for commercial buildings talking about light, thermal/solar heat gain etc.etc..but I...
Dear Saxena ji,
Thank you for inquiry.
West facing windows can be a big source of ... | <urn:uuid:34f12ef1-936c-4927-83b6-31ce36a24045> | 2.8125 | 495 | Comment Section | Science & Tech. | 50.487915 |
Copy will copy the cotents of newValue to an ascii, wide charactor or biniary string, from the offset location for a given length.
TVariable& Copy( const TVariable &newValue, int offset = 0, int length = 0 );
|newValue||The new value.|
|offset||The start location, in bytes from the start of the string. If start is nega... | <urn:uuid:a1dddc89-3f0a-4021-be6c-3e388c43e2c4> | 2.90625 | 208 | Documentation | Software Dev. | 61.890333 |
Captive Animals and Evolution
This is about natrual selection/evolution,
Im not very clear on this subject so please clear this up for me,
If I was to take animals from nature (lions for example), and took care of
them (fed them by hand, food predigested and full of nutrients for it to
grow) will they lose certain attr... | <urn:uuid:682bdb94-0aa7-4a26-b4a3-16c122b9b519> | 3.015625 | 920 | Audio Transcript | Science & Tech. | 52.583589 |
60 Second Adventures in Astronomy: Track 1
Ever wondered where the Universe came from? Or more importantly, where...
Ever wondered where the Universe came from? Or more importantly, where it's headed? Voiced by David Mitchell, this series of 60 second animations examines different scientific concepts from the big bang ... | <urn:uuid:2660dfa2-ddfe-42a7-86d5-d5622dda05b6> | 3.125 | 733 | Truncated | Science & Tech. | 57.127335 |
A big size,colorful dragon fly hovering over a pond. The Green Darner or Common Green Darner (Anax junius), after its resemblance to a darning-needle, is a species of dragonfly in the family Aeshnidae. One of the most common and abundant species throughout North America and its range south to Panama. It is well known f... | <urn:uuid:6bbebfb1-f352-4d04-a403-d3d70d585c26> | 3 | 223 | Knowledge Article | Science & Tech. | 55.660185 |
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:34c18cf8-5a89-4438-8155-fbcdc0a50b24> | 2.796875 | 230 | Content Listing | Science & Tech. | 53.703839 |
Almost one in ten species of European butterflies (37 species) are under threat of extinction and almost one-third are declining according to a major new report from IUCN and Butterfly Conservation Europe.
A further 10% are close to being threatened and one species, the Madeiran Large White, is probably extinct, not ha... | <urn:uuid:cc5d6f27-4e08-4493-863a-560072904bed> | 3.59375 | 504 | Knowledge Article | Science & Tech. | 30.615332 |
The KEY specifier defines the access keys for records in an indexed file. It takes the following form:
The defaults are CHARACTER and ASCENDING.
The key starts at position e1 in a record and has a length of e2-e1+1 . The values of e1 and e2 must cause the following calculations to be true:
1 .LE. (e1) .AND. (e1) .LE. (... | <urn:uuid:b62f331f-bf21-410e-8158-b1d63ed077f2> | 2.765625 | 436 | Documentation | Software Dev. | 56.75499 |
How did animals respond to the ice age? Ancient bison preserved in the Canadian arctic have given scientists a clue.
Why did rainforests evolve so much more diversity than other parts of the globe?
Are you familiar with the La Brea Tar Pits? Learn more on this Moment of Science.
During the current ice age glaciers have... | <urn:uuid:a881d3b3-7bcf-4809-8546-b5e0eff93d4a> | 2.90625 | 95 | Content Listing | Science & Tech. | 52.838831 |
A recent article in Scientific American by Jennifer Ackerman entitled “The Ultimate Social Network”, highlights a particular problem when trying to sequence the genomes of eukaryotic organisms. The problem is that the organism in question, whether it is an ant, butterfly, a polar bear, frog or Blue whale is not a singu... | <urn:uuid:a992af92-0dcb-4d7d-a46e-7cdddb13b720> | 3.25 | 275 | Personal Blog | Science & Tech. | 29.570318 |
Highlights Glycolysis II
1. Conversion of F6P to fructose-1,6-bisphosphate (F1,6BP - need to know) is catalyzed by the enzyme phoshofructokinase (PFK) (need to know). This reaction also requires ATP and is an irreversible reaction. ATP is an allosteric effector. High levels of ATP inhibit the enzyme. Low levels stimula... | <urn:uuid:3e34966b-0c0d-4b89-afb5-0870e64dedf8> | 3.3125 | 1,205 | Academic Writing | Science & Tech. | 39.811687 |
Contents of this page:
H+ flux linked to ATP synthesis or hydrolysis
Composition & roles of major domains of the ATP Synthase
Binding change mechanism
Structure of F1 & central stalk
Evidence for rotation
Fo & peripheral stalk subunits
F1Fo ATP Synthase of mitochondria, chloroplasts, and bacteria is represented schemat... | <urn:uuid:4ce4ba9b-6b53-4dcc-87b8-9992a7d72eb5> | 2.75 | 2,845 | Knowledge Article | Science & Tech. | 48.705731 |
Most of us are familiar with Gray Squirrels, those critters that make "kuk, kuk, kuk" sounds and flick their tails around our back yards. Like all rodents, Gray Squirrels have two pairs of chisel-shaped incisors. Squirrels' incisors grow five to six inches each year. Gnawing wears them down to "normal" length. The anim... | <urn:uuid:2ea396df-35b2-4bf3-8416-e350918821ce> | 3.703125 | 205 | Knowledge Article | Science & Tech. | 47.530136 |
Comment: 19:34 - 20:39 (01:05)
Source: Annenberg/CPB Resources - Earth Revealed - 21. Groundwater
Keywords: groundwater, resource, oil, hydrocarbon, energy, life, replenishment, infiltration, well
Our transcription: The great irony about groundwater is how little attention it often gets in discussions about dwindling r... | <urn:uuid:2ecf252f-887a-4f94-9ec0-642e2ea58263> | 3.140625 | 242 | Truncated | Science & Tech. | 41.143357 |
Science Fair Project Encyclopedia
Examples of monomers are hydrocarbons such as the alkane, alkene, and alene (homologous) series. Other hydrocarbon monomers such as styrene and ethene form polymers to make plastics like polystyrene and polyethene.
Amino acids are natural monomers, and polymerize to form proteins. Gluc... | <urn:uuid:e4899a8e-8b25-4ece-b4ef-c650ed06ae11> | 3.5 | 297 | Knowledge Article | Science & Tech. | 30.685865 |
Peppered moth (Biston betularia)
|Size||Adult wingspan: 45-62 mm (2)|
Caterpillar length: up to 60 mm (3)
Common and widespread (2).
In its typical form, the Peppered Moth has pepper-and-salt camouflage pattern. In some areas it also has a sooty black or ‘melanic’ form known as carbonaria (2) (4). The long, stick-like ... | <urn:uuid:be4ac657-9708-4c0f-9970-b61565afa835> | 3.34375 | 987 | Knowledge Article | Science & Tech. | 56.159384 |
Paper being a light and foldable raw material is a cost efficient and simple means of generating electrically conducting structures Paper is becoming a high tech material Researchers at the Max Planck Institute of Colloids ... - Read More
A new semiconductor device capable of emitting two distinct colours has been crea... | <urn:uuid:1395f7ec-5b63-481a-b82a-147f7000d817> | 3.09375 | 850 | Content Listing | Science & Tech. | 31.79639 |
|Are Birds Really Dinosaurs?|
Evidence presented on this site is overwhelmingly in favor of birds being the descendants of a maniraptoran dinosaur, probably something similar (but not identical) to a small dromaeosaur. Dr. Jacques Gauthier created the first well-accepted, detailed phylogeny of the diapsids. His work pr... | <urn:uuid:7a0a289e-7339-445a-833a-e2c4974bb948> | 3.140625 | 263 | Content Listing | Science & Tech. | 24.236465 |
AGS / Geohazards / Earthquakes / General Information
Earthquakes In Arkansas
Numerous earthquakes occur every year throughout the State of Arkansas, but most go unnoticed. Earthquakes that are felt can be startling, and serve as good reminders that Arkansas is located near one of the most hazardous earthquake zones in ... | <urn:uuid:0b67b30f-57a6-495b-b5c7-a068bd0adf91> | 3.59375 | 2,376 | Knowledge Article | Science & Tech. | 43.676251 |
Some bacteria have hair- or whip-like appendages called flagella used to ‘swim’ around. Others produce thick coats of slime and ‘glide’ about. Some stick out thin, rigid spikes called fimbriae to help hold them to surfaces. Some contain little particles of minerals that orient with the planet’s magnetic fields to help ... | <urn:uuid:2bf7f074-d1f2-4faf-b0b4-32c4625a435d> | 3.6875 | 175 | Knowledge Article | Science & Tech. | 41.044757 |
What if low-lying Gulf Coast communities could gauge the impact of future storms? Well, now there’s an app for that.
Under the direction of Dr. Jorge Brenner, associate director of marine science, The Nature Conservancy in Texas has developed a web portal and series of tools that will help coastal managers, scientists,... | <urn:uuid:2dbdbe3d-2bf3-493c-9242-dfc58f6a5e90> | 3.421875 | 368 | Knowledge Article | Science & Tech. | 33.313973 |
Source Newsroom: Cornell University
Rachel Bean, professor of astronomy at Cornell University, comments on new data released by the European Space Agency offering a detailed map of relic radiation from the Big Bang.
“The European Space Agency's Planck satellite has measured the oldest cosmic fossil, the cosmic microwav... | <urn:uuid:328341be-db17-4722-9d98-6f02f1365e0a> | 3.625 | 445 | Audio Transcript | Science & Tech. | 27.679389 |
Resonance and Standing Waves
Purchase a set of water goblets with liquid level markings corresponding to musical notes.Baseball Bat Physics
Learn about the acoustics and vibrational qualities of baseball bats.Flickr Physics
Visit The Physics Classroom's Flickr Galleries and enjoy a photo overview of the topic of standi... | <urn:uuid:3875a982-f416-4b5a-9cd0-de95beec678e> | 3.65625 | 2,042 | Tutorial | Science & Tech. | 44.533421 |
Hi. My name is Isabel and I am from St. Mark Catholic school.
I just wanted to know- What is the main thing that you will be
studying on your expedition trip?
Thank you for taking your time to read this.
On 6/18/2012 10:03 AM, webmaster [at] polartrec [dot] com wrote:
Thanks for the question! The main thing our group i... | <urn:uuid:6fb4ec84-6588-4c8b-98eb-4b3ebf094332> | 2.71875 | 264 | Comment Section | Science & Tech. | 59.777034 |
The Younger Dryas (YD) impact hypothesis is a recent theory that suggests that a cometary or meteoritic body or bodies hit and/or exploded over North America 12,900 years ago, causing the YD climate episode, extinction of Pleistocene megafauna, demise of the Clovis archaeological culture, and a range of other effects.
... | <urn:uuid:b0bb29ae-6723-4cb3-b9da-c6d3663d9cea> | 3.359375 | 840 | Personal Blog | Science & Tech. | 32.076614 |
|Group||13||Melting point||660.323 oC, 1220.581 oF, 933.473 K|
|Period||3||Boiling point||2519 oC, 4566.2 oF, 2792.15 K|
|Block||p||Density (kg m-3)||2698|
|Atomic number||13||Relative atomic mass||26.982|
|State at room temperature||Solid||Key isotopes||27Al|
|Electron configuration||[Ne] 3s23p1||CAS number||7429-90-5... | <urn:uuid:022a7c9b-5998-413b-8c87-e6f746366d3f> | 2.953125 | 2,184 | Knowledge Article | Science & Tech. | 42.732868 |
Carbon footprints designed by Christian Guthier for a climate change campaign at the UN Global Climate Change conference in Poznan.
It's a start, anyway. Today, the Environmental Protection Agency releases a new national greenhouse gas database, made up of self-reported data from 9 groups of polluters around the countr... | <urn:uuid:b3b7ba1d-ff05-43e4-89b8-556dfd0c8dda> | 2.6875 | 518 | Personal Blog | Science & Tech. | 58.802307 |
An artist’s conception of a black hole gobbling a star. (Credit: NASA/CXC/M. Weiss).
NASA’s swift spacecraft caught something interesting on the night of March 28th, 2011. Launched in 2004, the spacecraft is designed to detect extragalactic x-ray and gamma-ray flashes. And what a flash they caught in GRB 110328A; a bur... | <urn:uuid:f0d772d7-7301-4b47-99d9-3eb3dd0fd619> | 3.421875 | 330 | Personal Blog | Science & Tech. | 56.001697 |
© 1997, Astronomical Society of the Pacific, 390 Ashton Avenue, San Francisco, CA 94112.
They are born. They take shape. They go through a turbulent youth, and then they live out their lives in a predictable pattern. Maybe they have companions they provide for. Someday they rapidly decline and die. Stars, in many ways,... | <urn:uuid:5d293d3d-15d3-4e3c-ae13-4b6ff537f72c> | 3.65625 | 1,795 | Knowledge Article | Science & Tech. | 55.787727 |
by Terry Burton, Digital Media Coordinator
Thanks to amazing new pictures from the High Resolution Imaging Science Experiment (HiRISE) camera mounted on NASA’s Mars Reconnaissance Orbiter, you can imagine that you’re pressing your nose to the window of a plane flying over the Red Planet: cruising Mars from the comfort ... | <urn:uuid:fd0b68b4-0179-4829-836b-4ae458513411> | 3.296875 | 220 | Personal Blog | Science & Tech. | 26.951826 |
- de Lucia, M. and Bejan, A., Thermodynamics of energy storage by melting due to conduction or natural convection,
Trans. ASME, J. Sol. Energy Eng. (USA), vol. 112 no. 2
pp. 110 - 16 .
(last updated on 2007/04/08)
The authors describe the most basic thermodynamic aspects of the process of energy storage by melting of a... | <urn:uuid:4508746f-ec3d-4c24-82bd-0287ee90a253> | 2.828125 | 226 | Academic Writing | Science & Tech. | 43.364085 |
Concurrent programming regards operations that appear to overlap and is primarily concerned with the complexity that arises due to non-deterministic control flow. The quantitative costs associated with concurrent programs are typically both throughput and latency. Concurrent programs are often IO bound but not always, ... | <urn:uuid:bc1e98e7-efef-4354-a820-b2c47abb8688> | 3.46875 | 428 | Personal Blog | Software Dev. | 22.536277 |
With all the bad news coming out of the record-setting drought of 2012, there are a couple of nuggets of good news. First, the Gulf of Mexico "dead zone" is much smaller than normal, and we have had a record-low number of tornadoes in the month of July.
The Gulf's "dead zone" is a pocket of water off the mouth of the M... | <urn:uuid:c0ed9484-bfbf-411e-91e1-3b6e522e8cb6> | 2.828125 | 219 | Personal Blog | Science & Tech. | 52.132575 |
Manual Section... (3) - page: strsep
NAMEstrsep - extract token from string
#include <string.h> char *strsep(char **stringp, const char *delim);
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
DESCRIPTIONIf *stringp is NULL, the strsep() function returns NULL and does nothing else. Otherwise, th... | <urn:uuid:f2863719-e413-435d-acc5-83082440e822> | 2.703125 | 443 | Documentation | Software Dev. | 69.866474 |
On Today’s Date: August 29 & 30 August 29, 2010Posted by Lofty Ambitions in Other Stuff, Science, Space Exploration.
Tags: Apollo, Nobel Prize, Nuclear Weapons, Physics
Sixty-one years ago, the Cold War began. On this date in 1949, the Soviet Union detonated its first atomic bomb. As in all great Russian narratives, th... | <urn:uuid:be94e883-c148-4d20-ab09-16a32c840814> | 3.125 | 627 | Personal Blog | Science & Tech. | 46.532533 |
- History & Legacy
- Graphics Gallery
- Photo Gallery
- Contact Us
|Keeling Curve Lessons|
Page 1 of 7
Lessons for long-term earth observations
Charles David Keeling directed a program to measure the concentrations of CO2 in the atmosphere that continued without interruption from the late 1950's through the present. Th... | <urn:uuid:816ef515-8a5b-4e0d-b234-0f9671da59f2> | 3.453125 | 318 | Knowledge Article | Science & Tech. | 25.519522 |
Twitter / KHayhoe: @ChairmanAl no; point is, if ...
@ChairmanAl no; point is, if the planet were populated by 200k hunter-gatherers living in tents, climate change would be no big dealFlashback: How Human Beings Almost Vanished From Earth In 70,000 B.C. : Krulwich Wonders... : NPR
...once in our history, the world-wide... | <urn:uuid:fdad82ae-5996-4240-adc9-40740bd419f4> | 2.875 | 337 | Personal Blog | Science & Tech. | 67.937407 |
Effect of acid rain on algae
Green algae and red algae will be able to survive in acidic water as they are acidophilic plants.
Acid rain is caused by pollutant gases such as sulfur dioxide and nitrogen, that are emitted as industrial waste and by vehicles, into the atmosphere. These gases combine with moisture in the a... | <urn:uuid:56eec9e7-cd55-4b94-bcde-6cd1aa3b5b95> | 3.703125 | 270 | Knowledge Article | Science & Tech. | 49.465389 |
Cosmic rays - 100 years of discovery
A century ago - as scientists raced to find out where different types of radiation came from - an Austrian physicist took his electroscopes up in a hot air balloon and made a discovery that was to change thinking for good.
High in the sky, Victor Hess discovered that background radi... | <urn:uuid:73530c62-28c6-48dc-88d6-593e926f1133> | 3.6875 | 206 | Truncated | Science & Tech. | 43.909444 |
Invasive species are species that are not native to an area and which may compete with and displace native species.
- UNEP Releases Papers on Bioenergy Sustainability, 25 October 2010 by IISD Reporting Services: "The UN Environment Programme (UNEP) has published a series of four Issue Papers on bioenergy sustainability... | <urn:uuid:c03db069-1f87-45f7-a7a4-75d5fd5c342b> | 3.59375 | 982 | Content Listing | Science & Tech. | 24.186602 |
Force Field development
As an example, let us construct a force field compatible with the AMBER94
Draw the molecule with a mouse
Open the Free drawing panel in the Build > Free drawing
menu or by pressing the toolbar button
Select methane as a primer for the model by clicking the
button on the kernel box.
Right-click t... | <urn:uuid:6e7c8de3-92ba-49c9-b9c4-58f4b928b883> | 2.71875 | 2,118 | Tutorial | Science & Tech. | 66.591889 |
House of dreams
From The Economist, March 3, 2012
Physicists rarely become household names. Pretty much anyone watching television in Britain will have heard of Brian Cox who is credited with making physics sexy again. But before him you would probably have to go back a century or so to Albert Einstein, or three centur... | <urn:uuid:8b198ba4-71ea-4668-8b67-144cb434d8f3> | 2.78125 | 302 | Nonfiction Writing | Science & Tech. | 42.073951 |
The previous chapter introduced changesets and the commands
dopatch (fancy variations on the theme of the
In this chapter, we'll look in a bit more detail about how changesets
are used in archives, how they are used by the
commands, and what this implies for how you can make the best use of
Suppose that you
get the lat... | <urn:uuid:ce22f619-a2e3-43df-a9d6-b554c9c94b43> | 2.71875 | 625 | Tutorial | Software Dev. | 53.29643 |
The British government is considering forcing biotech companies to use "DNA bar coding" to identify genetically modified organisms.
The National Institute of Agricultural Botany (NIAB) in Cambridge, UK, was granted a patent this week on a DNA bar-coding technique. The technology would make it easier for regulators to t... | <urn:uuid:7af670c6-bf2f-4187-b0cd-a3cdbcf5ca20> | 3.1875 | 762 | Truncated | Science & Tech. | 38.015714 |
|Aug1-12, 01:43 AM||#1|
I have looked through my optics textbook and many websites about single-slit diffraction. They all end up deriving an equation that looks something like this: I = I0*(sinc(B))2, where B = (1/2)*k*b*sin(theta), k = wavenumber, b = slit width. I don't know if there's something I'm not understandin... | <urn:uuid:c839d72c-5c7d-47ee-94cf-ec2324d6efd5> | 2.953125 | 438 | Comment Section | Science & Tech. | 53.417652 |
Social structure of short-finned pilot whales
Since the early 80s of the last century researchers have studied the social structure of short-finned pilot whales. Mostly, they used the non-invasive photo-identification technique (...here...) in order to document relationships between free-ranging animals at sea. They ph... | <urn:uuid:96a4892b-eae0-4c5b-9ca5-2de7897277ab> | 3.34375 | 732 | Knowledge Article | Science & Tech. | 43.906038 |
The kelvin (symbol: K) is the SI unit of temperature.
It is defined as the fraction 1/273.16 of the thermodynamic (absolute) temperature of the triple point of water.
For more information about the topic Kelvin, read the full article at Wikipedia.org, or see the following related articles:
Recommend this page on Facebo... | <urn:uuid:1f3f724d-7533-4efb-b1a5-8af5ae327966> | 3.3125 | 92 | Knowledge Article | Science & Tech. | 43.866875 |
Could porous rocks deep in the ocean floor be a place to stash unwanted carbon dioxide? While researchers are trying to develop ways to scrub unwanted carbon dioxide from industrial and power plant emissions, the problem of what to do with the captured CO2 is a tricky one. Some have proposed injecting the gas deep into... | <urn:uuid:05ffeeef-b4e8-4670-9094-11d22ce230c6> | 3.25 | 175 | Truncated | Science & Tech. | 46.587794 |
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The 24-inch telescope of the Capilla Peak Observatory of the University of New Mexico was used to observe Jupiter during the week of the impact of comet Shoemaker-Levy-9 onto Jupiter. Images of Jupiter were obtained in several narrow-band interference filters. The opacity in the spots is... | <urn:uuid:20c77ac4-e048-49cf-9382-61aca55dc924> | 2.6875 | 87 | Knowledge Article | Science & Tech. | 21.744279 |
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Proceedings of the Horiba International Conference "New Direction of Ocean Research in the Western Pacific" : Past, Present and Future of UNESCO/IOC/WESTPAC Activity for 50 years and the JSPS Project "Coastal Marine Science"Section I: Research Articles/Harmful microalgaeField studies in the Upp... | <urn:uuid:cc141f44-ee70-494d-9ea3-8d68670a7633> | 2.8125 | 478 | Truncated | Science & Tech. | 36.701529 |
The object factory is actually a general mechanism used throughout the JNDI. In this lesson, object factories are used to transform information stored in the directory into Java objects that applications can use. And typically, these objects are objects that the application uses directly (for example, like a Person obj... | <urn:uuid:bea8284d-cf81-4d33-840a-85668a32a5f2> | 3.53125 | 536 | Documentation | Software Dev. | 40.302475 |
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In the following code example, the desc element is used to define a description of an element. This element can be read programatically to analyze SVG structure.
Copy this sample to a text file and save it with the .html file extension. Run it in Internet Explorer 9... | <urn:uuid:35ea8482-bc3a-4d52-bee8-e8086d24aab4> | 2.734375 | 466 | Documentation | Software Dev. | 45.990423 |
A symbol is like an immutable string, but symbols are normally interned, so that two symbols with the same character content are normally eq?. All symbols produced by the default reader (see Reading Symbols) are interned.
The two procedures string->uninterned-symbol and gensym generate uninterned symbols, i.e., symbols... | <urn:uuid:e80219df-1e11-4691-a867-b37c59490aa5> | 3.453125 | 469 | Documentation | Software Dev. | 60.641627 |
Rhope is a dynamically typed dataflow programming language that also borrows some ideas from other paradigms. Unlike mainstream programming languages, statements are not necessarily executed in the order they are written, but instead based on their dependencies. Statements that do not share dependencies run in parallel... | <urn:uuid:a5bd7522-c700-41d4-88de-49269f623942> | 2.78125 | 909 | Content Listing | Software Dev. | 39.553302 |
6.2. The peak-background split
We now consider the central mechanism of biased clustering, in which a rare high density fluctuation, corresponding to a massive object, collapses sooner if it lies in a region of large-scale overdensity. This `helping hand' from the long-wavelength modes means that overdense regions cont... | <urn:uuid:3a1f9add-ec91-400f-b429-f6d849e63d7a> | 3.109375 | 1,404 | Academic Writing | Science & Tech. | 42.660194 |
The degree to which fresh water and saltwater mix in an estuary is measured using isohalines. Isohalines are areas in the water that have equal salt concentrations, or salinities. In estuaries, salinity levels are generally highest near the mouth of a river where the ocean water enters, and lowest upstream where fresh ... | <urn:uuid:536356a0-14f4-4bf4-8951-4ef8f7f16547> | 4.34375 | 178 | Knowledge Article | Science & Tech. | 25.213257 |
At Horns Rev windfarm off the coast of Denmark, sometimes in winter, clouds appears in the wake of the turbines. I've only seen photos of the phenomenon when the wind direction is exactly aligned with the grid layout - that is, it's blowing directly from a turbine to its closest neighbour. That may be because it's most... | <urn:uuid:78b48cab-121a-4a45-97c4-1ad9a1c4ddb0> | 3.265625 | 238 | Q&A Forum | Science & Tech. | 32.892047 |
There is a very deep antipathy between duplication and abstraction.
This continues our series on the four Big Ideas in software development. Be sure to check earlier issues for articles on Cohesion and Coupling. This month, our goal is to cast new light on abstraction.
A naive approach to object-oriented design is to c... | <urn:uuid:ca4c2cb8-3078-4258-a897-79efbf9c77c1> | 3.3125 | 2,701 | Personal Blog | Software Dev. | 33.282931 |
In this blog I have done a lot of looking at two nearby towns on the Great Plains. The reason for doing this is that such temperatures should be somewhat similar. They should not have strong bias's over short distances like 15 miles. Today's example is of Geneva, Nebraska and Fairmont, Nebraska, two towns merely 15 mil... | <urn:uuid:2ad68af9-14cf-4202-b944-8731caaf9ddf> | 3.203125 | 392 | Personal Blog | Science & Tech. | 60.139545 |
Code development consists of mainly Programming languages, Debugging tools, Version Management tools, Compiling tools, and Integrated Development Environments (IDEs) where all the above are coupled as a single software application.
Links are provided to various compilers used in Scientific Computing like FORTRAN, C, C+... | <urn:uuid:2fc8386b-be30-4168-a376-cc61ce058d76> | 3.125 | 2,013 | Tutorial | Software Dev. | 45.804284 |
Thiomargarita namibiensis Brandie Amsden
Thiomargarita namibiensis is a very unique bacteria because not only does it live where most bacteria can not survive it is the largest bacteria ever found. It took the record of the largest bacteria from Epulopiscium fishelsoni by being one hundred times larger. These prokaryot... | <urn:uuid:33003396-8411-4ec9-8fbc-dcb11f3f529e> | 3.96875 | 865 | Knowledge Article | Science & Tech. | 56.536449 |
A tantalizing glimpse inside this dome was captured after
sunset at the mountain top
Pic Du Midi Observatory
in the French Pyrenees.
But while most are just beginning their
work at sunset, this observatory's day was done.
The instrument looming within
(for Christian Latouche IMageur Solaire),
dedicated to exploring dyn... | <urn:uuid:95941b29-375f-4174-90a1-9692e1498e71> | 3.015625 | 185 | Knowledge Article | Science & Tech. | 26.861727 |
yield pointArticle Free Pass
yield point, in mechanical engineering, load at which a solid material that is being stretched begins to flow, or change shape permanently, divided by its original cross-sectional area; or the amount of stress in a solid at the onset of permanent deformation. The yield point, alternatively ... | <urn:uuid:7f4f6e75-abee-45ff-9163-949340f54adc> | 3.765625 | 235 | Knowledge Article | Science & Tech. | 47.083564 |
- Find geographical coordinates using Google Maps (revisited)
Joor Loohuis, 2010-03-08
A little while ago we posted a short instruction on how to find the map coordinates of a location for use on a Google Map. With some new additions to Google Maps, this has now become even easier.
- Find geographical coordinates using... | <urn:uuid:e72731b1-2f8c-448a-9c7e-a22ead8c2407> | 2.8125 | 295 | Content Listing | Software Dev. | 29.459451 |
Strontium Isotopic Signatures of the Streams and Lakes of Taylor Valley, Southern Victoria Land, Antarctica: Chemical Weathering in a Polar Climate
Source: Aquatic Geochemistry, Volume 8, Number 2, June 2002 , pp. 75-95(21)
We have collected and analyzed a series of water samples from three closed-basin lakes (Lakes Bo... | <urn:uuid:5206a2b2-541e-4fb4-87b6-5ba9a01a7662> | 2.71875 | 464 | Academic Writing | Science & Tech. | 32.289946 |
We have several members of staff who are using YouTube to enhance their teaching, and as an alternative to more traditional methods of communication. The videos available on the YouTube channels below range from worked examples from the undergraduate syllabus to sometimes controversial lectures on the history, foundati... | <urn:uuid:e55a831f-eede-4184-99ff-8189d1a998e8> | 2.6875 | 586 | Content Listing | Science & Tech. | 25.41517 |
Climatic and Environmental Processes Centennial
years) Causes of Climate Change Over the Past
Forcing Factors Millennial
looking for climate processes and the forces that influence them at periods
ranging from 100 to 1000 years, paleoclimatologists splice instrumented
data with calibrated proxy data such from tree ring... | <urn:uuid:19e6453d-9825-4cb5-bd26-e0f49653f882> | 3.765625 | 681 | Knowledge Article | Science & Tech. | 20.078113 |
The explosions of egg yolks which had been in a microwave oven for only one minute, on the puncture of the yolk by a fork, seem to be explicable as a nucleation event (Letters, 1 February).
The doctors were right to assume that the yolk was heated above its boiling point. This can happen because of the absence of any s... | <urn:uuid:70c826e5-1041-400a-83ab-37d0e3576470> | 3.4375 | 218 | Truncated | Science & Tech. | 49.13348 |
The data is dismal. If climate change continues unmitigated as it has for the past century, temperatures around the world will increase 5 degrees Celsius (9 degrees Fahrenheit) by 2100 -- the equivalent increase between today's climate and the last ice age. This change won't impact the world equally, with local changes... | <urn:uuid:d380daad-80dd-406a-ad3f-d955615b87f5> | 3.59375 | 521 | Knowledge Article | Science & Tech. | 46.295338 |
Web edition: August 27, 2012
You’ve probably learned lessons by watching other people goof up. For example, if you saw another kid ride her bike too fast around a corner and fall down, you might ride your bike more slowly on that turn.
“We humans are very sensitive to others’ mistakes,” Masaki Isoda of the Okinawa Inst... | <urn:uuid:d083964c-3272-4cea-a2fa-b675b0c6dd7a> | 2.921875 | 182 | Truncated | Science & Tech. | 61.257022 |
Sir David Baulcombe is one of the world's top scientists whose work identified small RNAs, and he's a nice person as well. He will be a Keynote Speaker at the upcoming UK Plant Sciences Federation meeting in Dundee, Scotland, April 2013, which is sure to be a stimulating meeting http://www.plantsci2013.org.uk/programme... | <urn:uuid:d3670d82-bbb4-48b1-aacb-b3df4f13b2ba> | 3.078125 | 1,213 | Content Listing | Science & Tech. | 39.619641 |
Global environmental challenges
How green is the Amazon?
Not as green as it used to be, as shown in an analysis of satellite images made during last year’s record-breaking drought.
Because greenness is an indication of health in the Amazon, a decline in this measurement means this vast area is getting less healthy — ba... | <urn:uuid:091f8bec-63da-4682-a457-2743d0d7707e> | 3.4375 | 187 | Personal Blog | Science & Tech. | 39.271126 |
The RMMaterial class is a special material that is only of use if you are creating images via a RenderMan renderer and you want to write your shaders in external shader files or use shaders that are already compiled.
The material may consist of a surface shader, a displacement shader and an interior shader. The shader ... | <urn:uuid:41c17953-0421-45e1-b025-211750d8f449> | 3.125 | 1,146 | Documentation | Software Dev. | 43.200949 |
Glaciology of Blue Ice Areas in Antarctica
Our main objective for this project is to contribute to the glaciological understanding of blue ice areas in Antarctica. Most of the Antarctica Ice Sheet has a snow/firn cover of ~100m that overlies the ice. In blue ice areas, the ice is on the surface and there is no blanket ... | <urn:uuid:deef512f-382e-47c8-9794-023ea9044ab3> | 3.515625 | 436 | Academic Writing | Science & Tech. | 37.853912 |
This topic was created by BristolBachelor.
<b>SPACE</b> the final frontier
This is our place to talk about all things space. Feel free to join-in, regardless of whether you are just interested or are a real-life rocket scientist!
OK, here's a question
We want to build a big space habitat, large enough for lots of peopl... | <urn:uuid:a69d329d-4c93-42da-a4fc-b0802e181390> | 2.75 | 3,369 | Comment Section | Science & Tech. | 66.289653 |
There is a lesson that statisticians, especially of the Bayesian persuasion, have been hammering into our skulls for ages: do not subtract background. Nevertheless, old habits die hard, and old codes die harder. Such is the case with X-ray aperture photometry.
When C counts are observed in a region of the image that ov... | <urn:uuid:c671868e-5fb4-4ce3-9a38-f92f318a6d41> | 2.8125 | 540 | Academic Writing | Science & Tech. | 48.369989 |
Filed under: Uncategorized | Tags: bluefin tuna, cesium, cesium tuna, Cesium-134, Cesium-137, Fukushima, meltdown, radioactivity
Five months after the Fukushima disaster, Fisher of Stony Brook University in New York and a team decided to test Pacific bluefin that were caught off the coast of San Diego. To their surpris... | <urn:uuid:b64a7fb5-0fbb-4540-9f55-2ec24da55b53> | 3.359375 | 305 | Personal Blog | Science & Tech. | 46.612308 |
I’m sure this has been written about ad nauseum, but I spent some time yesterday explaining it to someone who didn’t understand, and now I feel like writing it up a bit more formally.
What is attr_accessible?
In Ruby on Rails, attr_accessible allows you to specify which attributes of a model can be altered via mass-ass... | <urn:uuid:06434ace-b608-4705-966b-fde153baae36> | 2.828125 | 1,320 | Personal Blog | Software Dev. | 52.772224 |
On Determining Changes in Intertidal Marine Species Ranges
Helmuth, B., Yamane, L., Lalwani, S., Matzelle, A., Tockstein, A. and Gao, N. 2011. Hidden signals of climate change in intertidal ecosystems: What (not) to expect when you are expecting. Journal of Experimental Marine Biology and Ecology 400: 191-199.
Using a ... | <urn:uuid:cab421c4-ca6b-463a-9bee-1de5dc1bcd3d> | 3.078125 | 468 | Academic Writing | Science & Tech. | 30.346 |
The first of three articles on the History of Trigonometry. This takes us from the Egyptians to early work on trigonometry in China.
The second of three articles on the History of Trigonometry.
This article tells you all about some early ways of measuring as well as methods of measuring tall objects we can still use to... | <urn:uuid:5c5373e1-33e7-4349-bcac-57b89a8742ef> | 3.328125 | 223 | Content Listing | Science & Tech. | 58.584012 |
WXPython is a very powerful and easy-to-use graphical user interface (GUI) toolkit. Because it is as cross-platform as Python, you can develop an application with it and not have to worry about porting issues.
Graphical User Interfaces (GUIs) rely heavily on object-oriented programming. wxPython is no different. You fi... | <urn:uuid:e9631f12-4979-4cae-a952-2233d3aaeaf1> | 2.71875 | 121 | Tutorial | Software Dev. | 51.845 |
SOHO's solar wind of change
21 May 2003We have known for 40 years that space weather affects the Earth, which is buffeted by a 'wind' from the Sun, but only now are we learning more about its precise origins. Solving the mystery of the solar wind has been a prime task for ESA's SOHO spacecraft. Its latest findings, ann... | <urn:uuid:5c849290-744c-422f-a3e3-b06dc9d6db88> | 3.75 | 693 | Knowledge Article | Science & Tech. | 52.170895 |
Image courtesy of Pacific Northwest National Laboratory
Computational modeling of uranium oxide ions with aluminum oxide provides insights that are contributing to development of a cheap and effective way to clean-up nuclear waste sites.
A simple computational methodology was developed to determine how uranium adheres ... | <urn:uuid:f28ecb32-89a3-4118-96d0-4e892e7f6005> | 3.75 | 460 | Knowledge Article | Science & Tech. | 22.773071 |
The Red River giant softshell turtle (Rafetus swinhoei).
© Asian Turtle Program
The Red River giant softshell turtle (Rafetus swinhoei) may be the rarest and most threatened of all turtles, in addition to one of the largest – only four individuals are known remaining alive in the world.
Two long-term captive animals in... | <urn:uuid:e5e5a401-7735-45f3-8702-54eedc11d5bf> | 2.9375 | 197 | Knowledge Article | Science & Tech. | 34.501429 |
Researchers Discover Doped Aluminum May Make Hydrogen Fuel Cells More Practical
November 1, 2011 2:16 PM
comment(s) - last by
Aluminum doped with titanium was able to catalyze hydrogen
We already know that hydrogen is a green fuel that can
. The catch is that hydrogen is dangerous to store both at fueling stations and ... | <urn:uuid:d6ba6da3-1ef5-4b55-984f-51ea6ceebb39> | 2.703125 | 1,022 | Comment Section | Science & Tech. | 47.389102 |